:root {
  --ink: #0c171b;
  --ink-2: #162328;
  --paper: #edf1ec;
  --surface: #f7f8f3;
  --line: #cfd7d0;
  --muted: #66736f;
  --orange: #ff6a2a;
  --orange-deep: #dd4d13;
  --mint: #8bd4b1;
  --blue: #7ca7d8;
  --shadow: 0 20px 60px rgba(13, 25, 29, .09);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
.reset-review{display:block;border:0;background:transparent;color:var(--muted);font-size:7px;padding:5px 0 0;cursor:pointer}.reset-review:hover{color:var(--orange-deep)}
.learning-archive{margin:0 clamp(34px,5vw,78px);padding:15px 18px;border:1px solid var(--line);background:#eef3ee;display:flex;align-items:center;justify-content:space-between;gap:18px}.learning-archive>div:first-child{max-width:620px}.learning-archive span{display:block;font-size:7px;font-weight:800;letter-spacing:1.3px;color:var(--orange-deep)}.learning-archive b{display:block;margin-top:4px;font-size:12px}.learning-archive p{margin:5px 0 0;font-size:8px;line-height:1.65;color:var(--muted)}.learning-archive small{display:block;margin-top:7px;font-size:8px;color:#386d55}.archive-actions{display:flex;gap:8px;flex:none}.archive-actions button{height:35px;border:1px solid var(--line);background:var(--surface);padding:0 11px;font-size:8px;font-weight:700;color:var(--ink);cursor:pointer;white-space:nowrap}.archive-actions button:first-child{background:var(--ink);border-color:var(--ink);color:#edf3ef}.archive-actions button:hover{border-color:var(--orange);color:var(--orange-deep)}.archive-actions button:first-child:hover{background:var(--orange-deep);border-color:var(--orange-deep);color:#fff}.light-off .learning-archive{background:#172428}.light-off .learning-archive small{color:var(--mint)}.light-off .archive-actions button{background:#111e22;color:#e9f0ec}.light-off .archive-actions button:first-child{background:#e9f0ec;color:#102026}
.terminal-status.offline i{background:#d17b53}.terminal-status.online i{background:#4aaa80}.terminal-status.demo i{background:#d59b3f}
.vision-lab{margin-top:28px;background:var(--surface);border:1px solid var(--line);padding:24px}.vision-heading{display:flex;justify-content:space-between;align-items:start;margin-bottom:20px}.vision-heading h2{font-size:20px;margin:6px 0}.vision-heading p{font-size:9px;color:var(--muted);margin:0}.vision-beta{font-size:7px;letter-spacing:1px;color:var(--orange-deep);border:1px solid #d7ae99;padding:5px 8px}.vision-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.upload-zone{min-height:260px;border:1px dashed #aeb9b2;background:#e9ede7;display:grid;place-items:center;position:relative;overflow:hidden;cursor:pointer}.upload-zone.dragging{border-color:var(--orange);background:#fff0e8}.upload-empty{text-align:center;padding:30px}.upload-empty>span{display:block;font:50px Georgia;color:#99a69f;transform:rotate(-8deg)}.upload-empty b{font-size:12px}.upload-empty p{font-size:8px;color:var(--muted);margin:7px 0 15px}.upload-empty em{display:inline-block;border:1px solid #9aa69f;padding:7px 12px;font-size:8px;font-style:normal}.upload-zone img{width:100%;height:100%;min-height:260px;max-height:380px;object-fit:contain;background:#101a1e}.remove-image{position:absolute;right:10px;top:10px;width:30px;height:30px;border:0;border-radius:50%;background:rgba(10,19,22,.8);color:white;font-size:18px;cursor:pointer}.vision-form{display:flex;flex-direction:column}.vision-form label{font-size:9px;font-weight:700;margin-bottom:8px}.vision-form textarea{width:100%;resize:vertical;min-height:112px;border:1px solid var(--line);background:transparent;padding:12px;outline:0;font-size:10px;line-height:1.7}.vision-form textarea:focus{border-color:#86958d}.vision-hints{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin:12px 0}.vision-hints span{font-size:8px;color:var(--muted)}.vision-hints i{font-size:8px;font-style:normal;border:1px solid var(--line);padding:4px 7px}.vision-submit{margin-top:auto;height:44px;border:0;background:var(--ink);color:white;font-size:10px;font-weight:700;cursor:pointer}.vision-submit span{color:var(--orange);margin-left:8px}.vision-submit:disabled{opacity:.35;cursor:not-allowed}.vision-submit.loading{opacity:.7;pointer-events:none}.vision-form>small{font-size:7px;line-height:1.6;color:var(--muted);margin-top:9px}.vision-result{margin-top:20px;border-top:1px solid var(--line);padding-top:20px}.vision-result-head{display:flex;align-items:center;justify-content:space-between;gap:20px}.device-ident{display:flex;align-items:center;gap:12px}.device-ident>span{width:42px;height:42px;display:grid;place-items:center;background:var(--ink);color:var(--orange);font:18px Georgia}.device-ident b,.device-ident small{display:block}.device-ident b{font-size:14px}.device-ident small{font-size:8px;color:var(--muted);margin-top:3px}.vision-confidence{text-align:right}.vision-confidence span,.vision-confidence b{display:block}.vision-confidence span{font-size:7px;color:var(--muted)}.vision-confidence b{font:18px Georgia;color:#36805e}.vision-summary{font-size:11px;line-height:1.8;margin:18px 0}.vision-columns{display:grid;grid-template-columns:1fr 1fr;gap:12px}.vision-block{border:1px solid var(--line);padding:14px}.vision-block h3{font-size:10px;margin:0 0 10px}.vision-block ul,.vision-block ol{margin:0;padding-left:18px}.vision-block li{font-size:9px;line-height:1.7;color:var(--muted)}.vision-manual{margin-top:12px;background:#e7ece6;padding:13px}.vision-manual span{font-size:8px;color:var(--muted)}.manual-links{display:flex;gap:7px;flex-wrap:wrap;margin-top:8px}.manual-links a{font-size:8px;color:var(--orange-deep);text-decoration:none;border:1px solid #c9d0ca;background:var(--surface);padding:6px 8px}.vision-limit{margin-top:12px;border-left:3px solid var(--orange);padding:9px 12px;background:#fff0e8;font-size:8px;color:#79503e;line-height:1.7}.api-callout{border:1px solid #dec4b5;background:#fff5ed;padding:15px}.api-callout b{display:block;font-size:10px}.api-callout p{font-size:8px;line-height:1.7;color:#795546;margin:6px 0 0}.api-callout code{font-family:ui-monospace,SFMono-Regular,monospace;color:#a34928}
.light-off .vision-lab{background:var(--surface)}.light-off .upload-zone{background:#1c2b30}.light-off .vision-manual{background:#203035}.light-off .vision-limit,.light-off .api-callout{background:#38251e}
@media(max-width:700px){.vision-lab{padding:18px}.vision-grid,.vision-columns{grid-template-columns:1fr}.upload-zone{min-height:210px}.vision-heading p{max-width:310px}.vision-beta{display:none}}
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
button, input, textarea { font: inherit; }
button { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.install-app{border:1px solid var(--line);background:transparent;padding:7px 11px;font-size:8px;cursor:pointer;white-space:nowrap}.install-app.ready{border-color:var(--orange);background:var(--orange);color:#21120c;font-weight:700}.light-off .install-app{border-color:#405054;color:#e5ece8}

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 236px 1fr; }
.sidebar { position: fixed; inset: 0 auto 0 0; width: 236px; padding: 28px 18px 22px; color: #eaf0ec; background: var(--ink); display: flex; flex-direction: column; z-index: 20; }
.brand { display: flex; align-items: center; gap: 12px; padding: 0 10px 32px; color: inherit; text-decoration: none; }
.brand-mark { width: 38px; height: 38px; border: 1px solid #465255; position: relative; display: flex; align-items: end; justify-content: center; gap: 3px; padding: 8px; transform: rotate(45deg); }
.brand-mark i { width: 4px; background: var(--orange); transform: rotate(-45deg); transform-origin: bottom; }
.brand-mark i:nth-child(1) { height: 10px; }.brand-mark i:nth-child(2) { height: 20px; }.brand-mark i:nth-child(3) { height: 15px; }
.brand b { display: block; font-size: 16px; letter-spacing: 1px; white-space: nowrap; }.brand small { display: block; margin-top: 3px; font-size: 7px; letter-spacing: .8px; color: #7d8b88; white-space: nowrap; }
.nav-list { display: grid; gap: 6px; }.nav-item { border: 0; background: transparent; color: #9caaa6; min-height: 46px; border-radius: 4px; padding: 0 12px; display: flex; align-items: center; gap: 13px; cursor: pointer; text-align: left; transition: .25s ease; position: relative; }
.nav-item:hover { color: white; background: #19272b; }.nav-item.active { color: white; background: #223136; box-shadow: inset 3px 0 var(--orange); }.nav-icon { font-family: Georgia, serif; font-size: 22px; width: 21px; text-align: center; }.nav-item span:nth-child(2) { font-size: 14px; font-weight: 600; }.nav-item em { margin-left: auto; font-size: 10px; font-style: normal; border: 1px solid #425054; border-radius: 3px; padding: 3px 5px; color: #788683; }.nav-item strong { margin-left: auto; min-width: 21px; height: 21px; display: grid; place-items: center; border-radius: 50%; color: white; background: var(--orange); font-size: 10px; }
.sidebar-label { color: #566562; font-size: 10px; letter-spacing: 1.8px; text-transform: uppercase; margin: 30px 13px 10px; }.secondary .nav-item { min-height: 42px; }
.sidebar-footer { margin-top: auto; border-top: 1px solid #263539; padding: 20px 8px 0; display: flex; align-items: center; gap: 12px; }.sidebar-footer b { font-size: 12px; }.sidebar-footer p { margin: 4px 0 0; font-size: 10px; color: #758481; }.streak-ring { width: 45px; height: 45px; border-radius: 50%; display: grid; place-content: center; text-align: center; border: 2px solid var(--orange); box-shadow: inset 0 0 0 4px #17252a; }.streak-ring span { font-weight: 800; font-size: 15px; line-height: 1; }.streak-ring small { color: #879591; font-size: 8px; }

.main-panel { grid-column: 2; min-width: 0; }.topbar { height: 76px; display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(28px, 4vw, 64px); border-bottom: 1px solid var(--line); }
.plant-status { font-size: 11px; letter-spacing: .3px; color: var(--muted); }.plant-status i { margin: 0 9px; color: #aab3ae; }.pulse { display: inline-block; width: 7px; height: 7px; background: #55b38a; border-radius: 50%; margin-right: 8px; box-shadow: 0 0 0 4px rgba(85, 179, 138, .14); animation: pulse 2s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 8px rgba(85, 179, 138, 0); } }
.top-actions { display: flex; align-items: center; gap: 10px; }.icon-button { width: 35px; height: 35px; border-radius: 50%; border: 1px solid var(--line); background: transparent; cursor: pointer; }.notification { position: relative; }.notification i { position: absolute; top: 6px; right: 5px; width: 6px; height: 6px; border-radius: 50%; background: var(--orange); border: 1px solid var(--paper); }.profile { display: flex; align-items: center; gap: 9px; margin-left: 8px; }.avatar { width: 37px; height: 37px; border-radius: 50%; display: grid; place-items: center; background: #26383e; color: white; font-size: 13px; }.profile b,.profile small { display: block; }.profile b { font-size: 12px; }.profile small { font-size: 9px; color: var(--muted); margin-top: 2px; }.profile button { border: 0; background: none; cursor: pointer; color: var(--muted); }
.view { display: none; animation: viewIn .4s ease both; }.view.active { display: block; }@keyframes viewIn { from { opacity: 0; transform: translateY(5px); } }

.hero-grid { min-height: 472px; display: grid; grid-template-columns: 1.15fr .85fr; border-bottom: 1px solid var(--line); overflow: hidden; }
.hero-copy { padding: 66px 30px 54px clamp(34px, 5vw, 78px); position: relative; z-index: 2; }.eyebrow,.kicker { color: var(--orange-deep); font-size: 9px; font-weight: 800; letter-spacing: 2px; }.eyebrow { display: flex; align-items: center; gap: 12px; }.eyebrow:before { content: ""; width: 25px; height: 1px; background: var(--orange); }
.hero-copy h1 { font-size: clamp(42px, 5vw, 68px); letter-spacing: -3.5px; line-height: 1.08; margin: 22px 0 20px; font-weight: 850; }.hero-copy h1 em { font-family: Georgia, "Songti SC", serif; font-style: italic; font-weight: 500; color: var(--orange-deep); }.hero-copy > p { max-width: 600px; font-size: 14px; line-height: 1.9; color: var(--muted); }
.hero-search { margin-top: 30px; max-width: 700px; display: grid; grid-template-columns: 44px 1fr auto; align-items: center; height: 64px; padding: 6px; background: white; border: 1px solid #d6dcd5; box-shadow: var(--shadow); }.search-spark { text-align: center; color: var(--orange); font-size: 18px; }.hero-search input { min-width: 0; height: 100%; border: 0; outline: none; background: transparent; font-size: 13px; color: var(--ink); }.hero-search button,.primary-button { height: 50px; border: 0; padding: 0 22px; color: white; background: var(--ink); font-size: 12px; font-weight: 700; cursor: pointer; transition: .2s; }.hero-search button:hover,.primary-button:hover { background: var(--orange-deep); }.hero-search button span { margin-left: 10px; color: var(--orange); }
.hot-tags { max-width: 700px; display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 14px; }.hot-tags span { font-size: 9px; color: #84908c; letter-spacing: 1px; margin-right: 4px; }.hot-tags button,.suggestion-row button { border: 1px solid var(--line); background: transparent; padding: 6px 10px; font-size: 10px; color: var(--muted); cursor: pointer; }.hot-tags button:hover,.suggestion-row button:hover { border-color: var(--orange); color: var(--orange-deep); }
.hero-visual { position: relative; min-height: 472px; overflow: hidden; background: var(--ink-2); background-image: linear-gradient(rgba(112,140,135,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(112,140,135,.07) 1px, transparent 1px); background-size: 30px 30px; }.hero-visual:before { content: "FIELD / 01"; position: absolute; top: 28px; left: 30px; color: #60706c; font-size: 9px; letter-spacing: 2px; }.hero-visual:after { content: "+     +     +"; position: absolute; right: 24px; bottom: 18px; color: #53625f; letter-spacing: 18px; }
.radar-lines { position: absolute; width: 420px; height: 420px; top: 50%; left: 52%; transform: translate(-50%,-50%); border: 1px solid #334448; border-radius: 50%; }.radar-lines:before,.radar-lines:after { content:""; position:absolute; inset: 55px; border:1px dashed #304044; border-radius:50%; }.radar-lines:after { inset: 115px; }.meter-core { position: absolute; left: 52%; top: 48%; transform: translate(-50%,-50%); }.meter-face { width: 185px; height: 185px; border-radius: 50%; position: relative; background: #ecf0ea; border: 12px solid #243439; box-shadow: 0 0 0 1px #53605f, 0 35px 70px #071013; }.meter-face:before { content:""; position:absolute; inset:18px; border-radius:50%; border:1px solid #aeb7b0; background: conic-gradient(from 225deg, var(--orange) 0 2deg, transparent 2deg 45deg, #9aa59f 45deg 46deg, transparent 46deg 90deg, #9aa59f 90deg 91deg, transparent 91deg 135deg, #9aa59f 135deg 136deg, transparent 136deg 180deg, var(--orange) 180deg 182deg, transparent 182deg); }.needle { position:absolute; z-index:2; width:55px; height:2px; background: var(--orange); top:50%; left:50%; transform-origin:left; transform:rotate(-28deg); }.needle:after { content:""; position:absolute; right:-3px; top:-2px; width:6px; height:6px; background:var(--orange); transform:rotate(45deg); }.meter-read { position:absolute; z-index:3; inset:0; display:grid; place-content:center; text-align:center; transform: translateY(28px); }.meter-read b { font-size:25px; letter-spacing:-1px; }.meter-read small { font-size:9px; color:#687470; }.core-label { text-align: center; color: #dbe4df; font-size: 10px; letter-spacing: 2px; margin-top: 18px; }.core-label i { margin-left: 8px; color: var(--mint); font-size: 7px; font-style: normal; }.orbit { position: absolute; color: #9eb0ab; font-size: 9px; letter-spacing: 1px; }.orbit:before { content:""; display:inline-block; width:5px; height:5px; border:1px solid var(--orange); margin-right:7px; transform:rotate(45deg); }.orbit-a { top: 20%; left: 12%; }.orbit-b { top: 26%; right: 8%; }.orbit-c { bottom: 20%; right: 16%; }
.signal-card { position:absolute; left: 7%; bottom: 10%; min-width: 200px; padding: 12px 14px; background: rgba(12,23,27,.84); border: 1px solid #344448; display:flex; align-items:center; gap:10px; color:white; backdrop-filter: blur(8px); }.signal-icon { color: var(--orange); font-size:26px; }.signal-card small,.signal-card b { display:block; }.signal-card small { font-size:8px; color:#758783; margin-bottom:2px; }.signal-card b { font-size:12px; }.signal-card > i { margin-left:auto; font-size:8px; color:var(--mint); font-style:normal; }

.dashboard-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 24px; padding: 32px clamp(34px, 5vw, 78px); }.panel { min-width:0; }.section-heading { display:flex; justify-content:space-between; align-items:end; margin-bottom:17px; }.section-heading h2 { margin:5px 0 0; font-size:21px; letter-spacing:-.7px; }.text-link { border:0; background:none; font-size:10px; color:var(--muted); cursor:pointer; }.text-link:hover { color:var(--orange-deep); }.course-card.featured { min-height:145px; padding:25px; background:var(--surface); border:1px solid var(--line); display:grid; grid-template-columns:64px 1fr 42px; gap:20px; align-items:center; box-shadow:0 12px 30px rgba(15,30,34,.04); }.course-index { align-self:stretch; border-right:1px solid var(--line); display:grid; align-content:center; }.course-index span { display:block; font-size:32px; font-family:Georgia,serif; }.course-index small { font-size:9px; color:var(--muted); }.course-meta { display:flex; align-items:center; gap:10px; }.course-meta span { font-size:9px; color:var(--orange-deep); font-weight:700; }.course-meta i { font-size:8px; color:var(--muted); font-style:normal; padding:3px 7px; border:1px solid var(--line); }.course-main h3 { margin:9px 0 5px; font-size:18px; }.course-main p { margin:0; font-size:10px; color:var(--muted); }.progress-row { display:flex; align-items:center; gap:10px; margin-top:17px; }.progress { flex:1; height:3px; background:#dce2dc; }.progress i { height:100%; display:block; background:var(--orange); }.progress-row b { font-size:9px; }.round-arrow { width:42px; height:42px; border:1px solid var(--line); background:transparent; border-radius:50%; cursor:pointer; }.round-arrow:hover { background:var(--orange); color:white; border-color:var(--orange); }
.due-count { font-size:9px; color:var(--orange-deep); font-weight:700; }.review-stack { background:var(--surface); border:1px solid var(--line); padding:0 18px; }.review-stack article { min-height: 48px; display:flex; align-items:center; gap:11px; border-bottom:1px solid #dde2dd; }.review-stack article:last-child { border-bottom:0; }.type-icon { width:27px; height:27px; display:grid; place-items:center; color:white; font: 11px Georgia,serif; }.type-icon.orange{background:#d46535}.type-icon.mint{background:#659d82}.type-icon.blue{background:#597c9f}.review-stack h3 { margin:0; font-size:11px; }.review-stack p { margin:3px 0 0; color:var(--muted); font-size:8px; }.review-stack p b { color:var(--ink); }.quick-review { margin-left:auto; border:1px solid var(--line); padding:5px 9px; background:transparent; font-size:9px; cursor:pointer; }.quick-review:hover { border-color:var(--orange); color:var(--orange-deep); }
.knowledge-map { padding: 12px clamp(34px, 5vw, 78px) 72px; }.map-cards { display:grid; grid-template-columns:repeat(4,1fr); gap:12px; }.map-card { min-height:230px; border:1px solid var(--line); background:rgba(247,248,243,.6); padding:20px; position:relative; text-align:left; cursor:pointer; overflow:hidden; transition:.25s; }.map-card:hover { transform:translateY(-5px); background:var(--surface); box-shadow:var(--shadow); border-color:#b7c0b9; }.map-no { position:absolute; top:17px; right:17px; color:#9aa59f; font: 11px Georgia,serif; }.map-card h3 { margin:23px 0 5px; font-size:16px; }.map-card p { margin:0 0 16px; color:var(--muted); font-size:9px; }.map-card > b { font-size:9px; color:var(--orange-deep); }.card-go { position:absolute; right:18px; bottom:18px; }.mini-gauge { width:65px;height:65px;border:1px solid #9ca8a2;border-radius:50%;display:grid;place-items:center;margin-top:8px;}.mini-gauge:before{content:"";width:39px;height:39px;border-radius:50%;border:1px dashed #a8b1ac}.mini-gauge i{position:absolute;width:25px;height:1px;background:var(--orange);transform:rotate(-30deg);transform-origin:right}.signal-wave,.shield-icon {height:65px;display:flex;align-items:center;font:62px Georgia;color:var(--orange-deep);}.shield-icon{font-size:58px;color:#739986}.valve-icon{height:65px;position:relative;width:70px;margin-top:8px}.valve-icon:before,.valve-icon:after{content:"";position:absolute;top:28px;width:32px;height:25px;border:2px solid #788983;transform:skewY(28deg)}.valve-icon:after{left:34px;transform:skewY(-28deg)}.valve-icon i:first-child{position:absolute;width:2px;height:28px;background:var(--orange);left:33px;top:4px}.valve-icon i:last-child{position:absolute;width:23px;height:8px;border:1px solid var(--orange);left:22px;top:0}

.page-head { min-height: 178px; padding: 44px clamp(34px,5vw,78px) 30px; display:flex; align-items:end; justify-content:space-between; border-bottom:1px solid var(--line); background:rgba(255,255,255,.18); }.page-head h1 { margin:7px 0 5px; font-size:36px; letter-spacing:-2px; }.page-head p { margin:0; color:var(--muted); font-size:12px; }.terminal-status { font-size:10px; padding:9px 12px; border:1px solid var(--line); }.terminal-status i { display:inline-block;width:6px;height:6px;background:#4aaa80;border-radius:50%;margin-right:7px; }
.search-layout { display:grid;grid-template-columns:minmax(0,1fr) 265px;gap:24px;padding:30px clamp(34px,5vw,78px) 70px; }.ai-search-box { min-height:104px;background:var(--surface);border:1px solid #bdc7c0;display:grid;grid-template-columns:42px 1fr auto;align-items:center;padding:10px;box-shadow:var(--shadow); }.ai-search-box > span { text-align:center;color:var(--orange);font-size:20px;align-self:start;margin-top:16px; }.ai-search-box textarea { resize:none;border:0;outline:0;background:transparent;padding:13px 6px;line-height:1.6;font-size:14px; }.ai-search-box button { height:48px;align-self:end;border:0;background:var(--ink);color:white;padding:0 17px;font-size:11px;cursor:pointer; }.ai-search-box button b { color:var(--orange);margin-left:8px; }.ai-search-box button.loading { opacity:.7;pointer-events:none; }.suggestion-row { display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 25px; }.answer-empty { min-height:320px;border:1px dashed #bfc8c1;display:grid;place-content:center;text-align:center;color:var(--muted); }.empty-symbol { font:58px Georgia;color:#aeb9b2; }.answer-empty h3 { margin:10px 0 5px;color:var(--ink);font-size:16px; }.answer-empty p { margin:0;font-size:10px; }.ai-answer { background:var(--surface);border:1px solid var(--line);padding:24px; }.answer-top { display:flex;justify-content:space-between;align-items:center;padding-bottom:18px;border-bottom:1px solid var(--line); }.answer-top > div:first-child { display:grid;grid-template-columns:34px auto;grid-template-rows:auto auto;column-gap:10px; }.ai-orb { grid-row:1/3;width:34px;height:34px;display:grid;place-items:center;background:var(--ink);color:var(--orange); }.answer-top b { font-size:12px; }.answer-top small { font-size:8px;color:var(--muted); }.confidence { font-size:9px;color:var(--muted); }.confidence b { color:#27845d; }.answer-lead { font-size:13px;line-height:1.8;margin:20px 0; }.diagnosis-grid { display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0; }.diagnosis-card { border:1px solid var(--line);padding:14px; }.diagnosis-card span { font:10px Georgia;color:var(--orange-deep); }.diagnosis-card h4 { margin:7px 0 5px;font-size:12px; }.diagnosis-card p { margin:0;font-size:9px;color:var(--muted);line-height:1.6; }.steps-title { margin:23px 0 10px;font-size:13px; }.check-steps { margin:0;padding:0;list-style:none; }.check-steps li { display:flex;gap:11px;padding:9px 0;border-bottom:1px solid #e0e4df;font-size:10px;line-height:1.6; }.check-steps b { flex:0 0 23px;height:23px;display:grid;place-items:center;background:#e5e9e4;color:var(--orange-deep);font:10px Georgia; }.safety-note { margin-top:18px;background:#fff0e8;border-left:3px solid var(--orange);padding:12px;font-size:9px;line-height:1.7;color:#7b432b; }.answer-actions { margin-top:22px;padding-top:15px;border-top:1px solid var(--line);display:flex;align-items:center;gap:8px; }.answer-actions button { border:1px solid var(--line);background:transparent;padding:7px 10px;font-size:9px;cursor:pointer; }.answer-actions span { margin-left:auto;color:#8b9691;font-size:8px; }
.search-aside { display:grid;align-content:start;gap:14px; }.aside-card { background:var(--surface);border:1px solid var(--line);padding:20px; }.aside-card h3 { margin:7px 0 15px;font-size:15px; }.aside-card ol { list-style:none;margin:0;padding:0; }.aside-card li { display:flex;align-items:center;gap:11px;padding:9px 0;border-bottom:1px solid #e0e4df;font-size:10px; }.aside-card li:last-child{border:0}.aside-card li b{font:10px Georgia;color:var(--orange-deep)}.aside-title{display:flex;align-items:center;justify-content:space-between}.aside-title h3{margin:0 0 10px}.aside-title button{border:0;background:none;font-size:8px;color:var(--muted);cursor:pointer}.history>div:last-child{display:grid}.history #historyList button{text-align:left;border:0;border-top:1px solid #e0e4df;background:none;padding:10px 0;font-size:9px;color:var(--muted);cursor:pointer}.history #historyList button:hover{color:var(--orange-deep)}

.learn-stat { display:flex;align-items:center;gap:10px; }.learn-stat b { font:42px Georgia;color:var(--orange-deep); }.learn-stat span { font-size:8px;line-height:1.4;color:var(--muted); }.category-tabs { padding:20px clamp(34px,5vw,78px) 0;display:flex;gap:6px; }.category-tabs button { border:1px solid var(--line);background:transparent;padding:8px 16px;font-size:10px;cursor:pointer; }.category-tabs button.active { background:var(--ink);border-color:var(--ink);color:white; }.learn-layout { display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:25px;padding:20px clamp(34px,5vw,78px) 70px; }.course-grid { display:grid;grid-template-columns:repeat(2,1fr);gap:14px;align-content:start; }.catalog-card { min-height:220px;background:var(--surface);border:1px solid var(--line);padding:20px;position:relative;transition:.2s; }.catalog-card:hover { transform:translateY(-3px);box-shadow:var(--shadow); }.catalog-card .course-num { font:11px Georgia;color:#9ba6a0; }.catalog-card .course-tag { float:right;font-size:8px;padding:3px 7px;border:1px solid var(--line); }.catalog-card .course-symbol { height:52px;margin:20px 0 10px;font:43px Georgia;color:var(--orange-deep); }.catalog-card h3 { margin:0 0 7px;font-size:16px; }.catalog-card p { margin:0;color:var(--muted);font-size:9px;line-height:1.6; }.catalog-foot { position:absolute;left:20px;right:20px;bottom:17px;display:flex;justify-content:space-between;align-items:center; }.catalog-foot span { font-size:8px;color:var(--muted); }.catalog-foot button { width:30px;height:30px;border-radius:50%;border:1px solid var(--line);background:transparent;cursor:pointer; }.path-panel { background:var(--ink);color:#e7eeea;padding:23px;align-self:start;position:sticky;top:20px; }.path-panel h2{margin:7px 0 18px;font-size:18px}.path-progress{position:relative;height:100px;display:grid;place-items:center}.path-progress>div{position:absolute;text-align:center}.path-progress b,.path-progress small{display:block}.path-progress b{font:25px Georgia}.path-progress small{font-size:7px;color:#84938f}.path-progress svg{width:90px;height:90px;transform:rotate(-90deg)}.path-progress circle{fill:none;stroke:#2d3d41;stroke-width:4}.path-progress circle.done{stroke:var(--orange);stroke-dasharray:195;stroke-dashoffset:62;stroke-linecap:round}.path-list{list-style:none;margin:20px 0 0;padding:0}.path-list li{display:flex;gap:11px;min-height:58px;position:relative}.path-list li:after{content:"";position:absolute;left:12px;top:26px;width:1px;height:31px;background:#37474b}.path-list li:last-child:after{display:none}.path-list i{z-index:1;width:25px;height:25px;display:grid;place-items:center;border:1px solid #4b5b5e;border-radius:50%;background:var(--ink);font:9px Georgia;color:#74837f}.path-list .done i{background:#57816e;color:white;border-color:#57816e}.path-list .current i{border-color:var(--orange);color:var(--orange)}.path-list b,.path-list small{display:block}.path-list b{font-size:10px;margin-top:4px}.path-list small{font-size:8px;color:#6e7e7a;margin-top:4px}.path-list .current b{color:var(--orange)}

.review-head-stats{display:flex;gap:24px}.review-stat { border-left:1px solid var(--line);padding-left:18px;min-width:75px }.review-stat span,.review-stat b { display:block; }.review-stat span { font-size:8px;color:var(--muted); }.review-stat b { margin-top:4px;font:20px Georgia; }.bank-stat b{color:var(--orange-deep)}.review-layout { display:grid;grid-template-columns:minmax(0,1fr) 275px;gap:24px;padding:30px clamp(34px,5vw,78px) 70px; }.quiz-card { background:var(--surface);border:1px solid var(--line);min-height:505px;display:flex;flex-direction:column; }.quiz-top { height:55px;padding:0 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);font-size:9px;color:var(--muted); }.quiz-top b { font:11px Georgia;color:var(--orange-deep); }.quiz-body { padding:32px 34px;flex:1; }.question-label { font-size:8px;color:var(--orange-deep);font-weight:800;letter-spacing:2px; }.quiz-body h2 { max-width:730px;margin:12px 0 25px;font-size:20px;line-height:1.6; }.options { display:grid;grid-template-columns:repeat(2,1fr);gap:10px; }.option { min-height:55px;border:1px solid var(--line);background:transparent;text-align:left;padding:10px 15px;display:flex;align-items:center;gap:11px;font-size:11px;cursor:pointer; }.option i { width:26px;height:26px;display:grid;place-items:center;border:1px solid var(--line);font:10px Georgia;font-style:normal; }.option:hover,.option.selected { border-color:#7d8b85;background:#edf0eb; }.option.correct { border-color:#5a9a79;background:#e8f4ed;color:#286b4b; }.option.wrong { border-color:#d16c48;background:#fff0ea;color:#9a4325; }.explanation { margin-top:18px;background:#edf0eb;border-left:3px solid #618b76;padding:13px;font-size:10px;line-height:1.7; }.quiz-footer { min-height:70px;padding:10px 24px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between; }.ghost-button { border:0;background:none;color:var(--muted);font-size:10px;cursor:pointer; }.primary-button:disabled { opacity:.35;cursor:not-allowed; }.quiz-complete{flex:1;display:grid;place-content:center;text-align:center;padding:60px}.complete-mark{width:72px;height:72px;border-radius:50%;border:2px solid var(--mint);display:grid;place-items:center;margin:0 auto 20px;font-size:28px;color:#397b5d}.quiz-complete h2{font-size:24px;margin:0 0 8px}.quiz-complete p{font-size:10px;color:var(--muted);line-height:1.7}.quiz-complete b{color:var(--orange-deep)}.mastery-panel { align-self:start;background:var(--ink);color:#e6eee9;padding:23px; }.mastery-panel h2{font-size:18px;margin:7px 0 24px}.mastery-chart{height:170px;border-bottom:1px solid #38474a;position:relative}.chart-bars{position:absolute;inset:0 0 22px;display:flex;align-items:end;justify-content:space-between}.chart-bars i{width:20px;background:#3b4b4e}.chart-bars i.today{background:var(--orange)}.chart-labels{position:absolute;bottom:5px;left:0;right:0;display:flex;justify-content:space-between}.chart-labels span{font-size:7px;color:#71817d}.mastery-note{margin-top:20px;display:grid;grid-template-columns:auto 1fr;gap:10px}.mastery-note span{font:17px Georgia;color:var(--mint)}.mastery-note p{margin:0;font-size:8px;color:#82918d;line-height:1.6}
.review-modes{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding:22px clamp(34px,5vw,78px) 0}.review-modes>button{min-height:74px;border:1px solid var(--line);background:var(--surface);display:flex;align-items:center;gap:13px;padding:13px 16px;text-align:left;cursor:pointer}.review-modes>button>span{font:15px Georgia;color:#9aa59f}.review-modes b,.review-modes small{display:block}.review-modes b{font-size:11px}.review-modes small{font-size:8px;color:var(--muted);margin-top:5px}.review-modes small i{font-style:normal;color:var(--orange-deep);font-weight:700}.review-modes>button.active{background:var(--ink);color:white;border-color:var(--ink)}.review-modes>button.active>span{color:var(--orange)}.review-modes>button.active small{color:#869590}.chapter-picker{margin:10px clamp(34px,5vw,78px) 0;background:#e3e8e2;border:1px solid var(--line);padding:12px 15px;display:flex;align-items:end;justify-content:space-between;gap:15px}.chapter-picker label{font-size:8px;color:var(--muted);display:grid;gap:6px;flex:1;max-width:410px}.chapter-picker select{height:36px;border:1px solid var(--line);background:var(--surface);color:inherit;padding:0 10px;font-size:9px}.chapter-picker button{height:36px;border:0;background:var(--orange);padding:0 15px;font-size:9px;font-weight:700;cursor:pointer}.quiz-complete-inline{grid-column:1/-1;text-align:center;padding:35px 10px}.quiz-complete-inline .complete-mark{width:56px;height:56px}.quiz-complete-inline b{display:block;font-size:15px}.quiz-complete-inline p{font-size:9px;color:var(--muted);line-height:1.7}.line-chart{height:180px;border:0}.line-chart svg{display:block;width:100%;height:148px;overflow:visible}.line-chart .grid-line{stroke:#304044;stroke-width:1}.line-chart .trend-area{fill:rgba(139,212,177,.1)}.line-chart .trend-line{fill:none;stroke:var(--orange);stroke-width:3;stroke-linecap:round;stroke-linejoin:round}.line-chart circle{fill:var(--ink);stroke:var(--orange);stroke-width:2}.line-chart circle.today-point{fill:var(--orange)}.line-chart .chart-labels{bottom:0}.accuracy-row{display:flex;justify-content:space-between;border-top:1px solid #344448;margin-top:18px;padding-top:13px}.accuracy-row span{font-size:8px;color:#82918d}.accuracy-row b{font:14px Georgia;color:var(--orange)}.light-off .review-modes>button,.light-off .chapter-picker{background:var(--surface)}
.simple-view { min-height:calc(100vh - 76px); }.empty-library { max-width:560px;margin:70px auto;text-align:center;padding:50px;border:1px dashed #b9c3bc; }.empty-library>span{font:60px Georgia;color:#a9b3ad}.empty-library h2{margin:12px 0 7px;font-size:19px}.empty-library p{margin:0;color:var(--muted);font-size:10px}.empty-library button{margin-top:22px;border:0;background:var(--ink);color:white;padding:11px 18px;font-size:10px;cursor:pointer}.notes-board{max-width:840px;margin:35px auto;background:var(--surface);border:1px solid var(--line);padding:20px}.notes-board textarea{width:100%;min-height:330px;resize:vertical;border:0;outline:0;background:transparent;line-height:2;font-size:13px}.notes-board>div{border-top:1px solid var(--line);padding-top:15px;display:flex;justify-content:space-between;align-items:center}.notes-board span{font-size:8px;color:var(--muted)}.notes-board button{border:0;background:var(--ink);color:white;padding:9px 16px;font-size:9px;cursor:pointer}
.safety-nav > i { margin-left:auto; color:var(--orange); font-size:7px; font-style:normal; letter-spacing:.8px; }
.home-insight-grid { display:grid; grid-template-columns:1fr 1fr; gap:16px; padding:8px clamp(34px,5vw,78px) 38px; }
.home-insight { min-height:150px; position:relative; border:1px solid var(--line); background:var(--surface); padding:23px; text-align:left; cursor:pointer; display:grid; grid-template-columns:.65fr 1fr; gap:26px; transition:.25s; overflow:hidden; }
.home-insight:hover { transform:translateY(-3px); box-shadow:var(--shadow); }.home-insight h2{font-size:19px;margin:6px 0 0}.insight-body{border-left:1px solid var(--line);padding-left:22px;align-self:center}.insight-body b{font-size:12px}.insight-body p{font-size:9px;line-height:1.7;color:var(--muted);margin:7px 30px 0 0}.insight-arrow{position:absolute;right:20px;bottom:18px}.safety-entry{background:var(--ink);color:#e8efeb;border-color:var(--ink)}.safety-entry .insight-body{border-color:#38484c}.safety-entry .insight-body p{color:#8d9a97}.hot-label{position:absolute;right:20px;top:18px;color:var(--orange);font-size:8px;letter-spacing:1px}

.technical-head { background-image:linear-gradient(90deg,transparent 70%,rgba(255,106,42,.06) 70%); }.edition-stamp{border:1px solid var(--line);padding:12px 15px;min-width:110px}.edition-stamp small,.edition-stamp b{display:block}.edition-stamp small{font-size:7px;letter-spacing:1px;color:var(--muted)}.edition-stamp b{font:17px Georgia;margin-top:5px}.content-tabs{padding:20px clamp(34px,5vw,78px) 0;display:flex;gap:6px;flex-wrap:wrap}.content-tabs button{border:1px solid var(--line);background:transparent;padding:8px 15px;font-size:9px;cursor:pointer}.content-tabs button.active{background:var(--ink);color:white;border-color:var(--ink)}
.technical-layout{display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:24px;padding:20px clamp(34px,5vw,78px) 70px}.technical-feed{display:grid;gap:16px}.field-guide{display:grid;grid-template-columns:90px 1fr;background:var(--surface);border:1px solid var(--line)}.guide-side{background:var(--ink);color:white;padding:22px 17px;display:flex;flex-direction:column}.guide-side span{font-size:7px;color:#778682;letter-spacing:1px}.guide-side b{font:39px Georgia;margin-top:13px}.guide-side i{margin-top:auto;color:var(--orange);font-size:8px;font-style:normal}.guide-main{padding:23px 26px}.guide-title{display:flex;align-items:start;justify-content:space-between}.article-chip{font-size:7px;color:var(--orange-deep);letter-spacing:1.2px}.guide-title h2{font-size:19px;margin:6px 0 0}.guide-symbol{font:32px Georgia;color:var(--orange-deep)}.guide-lead{font-size:10px;line-height:1.8;color:var(--muted);max-width:750px}.loop-diagram{display:flex;align-items:center;justify-content:center;gap:10px;border:1px dashed #afb9b2;padding:15px;margin:18px 0;background:rgba(236,240,235,.65)}.loop-diagram span{font:11px Georgia}.loop-diagram b{border:1px solid #87938c;padding:8px 10px;font-size:9px}.loop-diagram i{font-size:9px;color:var(--orange-deep);font-style:normal}.symptom-table{border-top:1px solid var(--line);border-left:1px solid var(--line)}.symptom-table>div{display:grid;grid-template-columns:.6fr 1fr 1.4fr}.symptom-table b,.symptom-table span{font-size:9px;padding:9px 10px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.symptom-table>div:first-child{background:#e3e8e2}.field-warning{margin-top:14px;border-left:3px solid var(--orange);background:#fff0e8;padding:11px;font-size:9px;line-height:1.7;color:#75432d}.field-warning b{margin-right:8px}.field-guide.compact .guide-main{min-height:205px}.formula-strip{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;background:#e6ebe5;border:1px solid var(--line);padding:14px;margin-top:20px}.formula-strip span,.formula-strip small{font-size:8px;color:var(--muted)}.formula-strip b{font:17px Georgia;text-align:center}
.standard-card{background:var(--surface);border:1px solid var(--line);padding:23px 25px}.standard-top{display:flex;justify-content:space-between;gap:18px}.standard-region{font-size:8px;color:var(--orange-deep);font-weight:700;letter-spacing:1px}.standard-top h2{font:25px Georgia;margin:7px 0 3px}.standard-top p{margin:0;color:var(--muted);font-size:9px}.standard-status{align-self:start;border:1px solid #83aa96;color:#3d785d;padding:5px 9px;font-size:8px}.standard-status.new{border-color:#d28a68;color:#a44d26}.standard-summary{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}.standard-summary>div{border-left:2px solid var(--line);padding-left:12px}.standard-summary span{font-size:8px;color:var(--orange-deep);font-weight:700}.standard-summary p{font-size:9px;line-height:1.7;color:var(--muted);margin:6px 0 0}.standard-toggle{width:100%;border:0;border-top:1px solid var(--line);background:transparent;padding:13px 0 0;display:flex;justify-content:space-between;font-size:9px;cursor:pointer}.standard-detail{margin-top:15px;padding:15px;background:#e8ece7}.standard-detail ol{margin:0;padding-left:21px}.standard-detail li{font-size:9px;line-height:1.8}.standard-detail a,.source-row a{display:inline-block;margin-top:12px;color:var(--orange-deep);font-size:8px;text-decoration:none}.lifecycle{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin:18px 0;padding:12px;border:1px dashed #b4bdb7}.lifecycle span{padding:6px 8px;background:#e4e9e3;font-size:8px}.lifecycle i{font-style:normal;color:var(--orange)}.pid-row{display:flex;align-items:center;justify-content:center;gap:14px;margin:20px 0;padding:15px;border:1px dashed #b4bdb7}.pid-row div{text-align:center}.pid-row b{width:42px;height:42px;border:1px solid #77857e;border-radius:50%;display:grid;place-items:center;font:12px Georgia}.pid-row span{font-size:7px;color:var(--muted)}.pid-row i{font-style:normal;color:#87938d;letter-spacing:2px}.source-row{display:flex;gap:20px;border-top:1px solid var(--line);margin-top:15px}.technical-aside{display:grid;align-content:start;gap:14px;position:sticky;top:18px}.standard-index{display:grid}.standard-index h3{margin-bottom:8px}.standard-index button{display:flex;justify-content:space-between;border:0;border-top:1px solid var(--line);background:transparent;padding:11px 0;font-size:9px;cursor:pointer;text-align:left}.standard-index button:hover{color:var(--orange-deep)}.standard-index button b{font:9px Georgia}.disclaimer{background:#fff0e8;border-color:#e1c4b5}.disclaimer b{font-size:9px;color:#8b4328}.disclaimer p{font-size:8px;line-height:1.7;color:#7b5c50;margin:7px 0 0}

.safety-hero{min-height:250px;background:var(--ink);color:#edf3ef;padding:55px clamp(34px,5vw,78px) 42px;display:flex;justify-content:space-between;align-items:end;position:relative;overflow:hidden}.safety-hero:after{content:"";position:absolute;width:360px;height:360px;border:1px solid #2d3d41;border-radius:50%;right:15%;top:-170px;box-shadow:0 0 0 55px rgba(60,76,79,.14),0 0 0 110px rgba(60,76,79,.08)}.safety-hero h1{font-size:42px;letter-spacing:-2px;margin:10px 0 8px}.safety-hero p{font-size:11px;color:#8f9c98;margin:0}.safety-radar{z-index:1;border-left:1px solid #3b4b4f;padding-left:20px}.safety-radar span,.safety-radar b,.safety-radar i{display:block}.safety-radar span{font-size:7px;color:#71817d}.safety-radar b{font:24px Georgia;margin:5px 0}.safety-radar i{color:var(--mint);font-size:8px;font-style:normal}.safety-ticker{min-height:48px;display:flex;align-items:center;gap:12px;padding:0 clamp(34px,5vw,78px);background:var(--orange);color:#23150f}.safety-ticker span{font-size:7px;letter-spacing:1.5px;background:var(--ink);color:white;padding:6px 8px}.safety-ticker b{font-size:9px}.safety-ticker p{font-size:9px;flex:1}.safety-ticker button{border:0;background:transparent;font-size:8px;font-weight:700;cursor:pointer}.safety-content{padding-bottom:70px}.safety-content>.content-tabs{padding-top:24px}.safety-layout{display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:24px;padding:18px clamp(34px,5vw,78px) 0}.accident-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;align-content:start}.accident-card{min-height:265px;background:var(--surface);border:1px solid var(--line);padding:20px;display:flex;flex-direction:column;position:relative}.accident-card.featured{border-top:3px solid var(--orange)}.accident-meta{display:flex;justify-content:space-between;align-items:center}.accident-meta span{font-size:8px;color:var(--orange-deep);font-weight:700;letter-spacing:1px}.accident-meta i{font-size:7px;font-style:normal;border:1px solid var(--line);padding:3px 6px;color:var(--muted)}.accident-card h2{font-size:17px;line-height:1.35;margin:15px 0 8px}.accident-card>p{font-size:9px;line-height:1.7;color:var(--muted);margin:0}.accident-impact{display:flex;gap:18px;margin:18px 0}.accident-impact div{border-left:2px solid var(--line);padding-left:9px}.accident-impact b,.accident-impact span{display:block}.accident-impact b{font:17px Georgia}.accident-impact span{font-size:7px;color:var(--muted)}.accident-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:12px}.accident-foot a{color:var(--muted);font-size:8px;text-decoration:none}.accident-foot button{border:0;background:var(--ink);color:white;padding:8px 11px;font-size:8px;cursor:pointer}.safety-aside{display:grid;align-content:start;gap:14px}.risk-focus{background:var(--ink);color:#e7eeea;padding:21px}.risk-focus h3{font-size:16px;margin:7px 0 14px}.risk-item{display:flex;gap:10px;border-top:1px solid #344448;padding:12px 0}.risk-item>b{font:10px Georgia;color:var(--orange)}.risk-item p{margin:0;font-size:8px;line-height:1.6;color:#8d9b97}.risk-item strong{display:block;color:#dce5e0;font-size:9px}.source-note b{font-size:9px}.source-note p{font-size:8px;line-height:1.7;color:var(--muted)}
.safety-updates{padding:24px clamp(34px,5vw,78px) 4px;background:#e6ebe6;border-bottom:1px solid var(--line)}.safety-updates-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:16px}.safety-updates-head h2{font-size:24px;margin:6px 0}.safety-updates-head p{font-size:9px;color:var(--muted);margin:0}.safety-updates-head>b{font:24px Georgia;color:var(--orange-deep);white-space:nowrap}.safety-update-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.safety-update-card{min-height:270px;background:var(--surface);border:1px solid var(--line);padding:16px;display:flex;flex-direction:column}.safety-update-card>span{font-size:7px;color:var(--orange-deep);font-weight:800;letter-spacing:.7px}.safety-update-card h3{font-size:14px;line-height:1.4;margin:8px 0}.safety-update-card>p{font-size:8px;line-height:1.65;color:var(--muted);margin:0}.safety-update-card>div{margin-top:12px;border-left:2px solid var(--orange);padding-left:8px}.safety-update-card>div b,.safety-update-card>div small{display:block}.safety-update-card>div b{font-size:8px;color:var(--orange-deep)}.safety-update-card>div small{font-size:8px;line-height:1.6;color:var(--muted);margin-top:3px}.safety-update-card>a{margin-top:auto;padding-top:12px;color:var(--orange-deep);font-size:8px;text-decoration:none}.light-off .safety-updates{background:#111e22}.light-off .safety-update-card{background:#172429}
.accident-analysis{margin:22px clamp(34px,5vw,78px) 0;background:var(--surface);border:1px solid var(--line)}.analysis-head{padding:25px 28px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:20px}.analysis-head span{font-size:8px;color:var(--orange-deep);font-weight:700}.analysis-head h2{font-size:24px;margin:7px 0 4px}.analysis-head p{font-size:9px;color:var(--muted);margin:0}.analysis-head button{width:34px;height:34px;border:1px solid var(--line);background:transparent;cursor:pointer}.event-chain{padding:24px 28px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px}.chain-step{background:#e5e9e4;padding:14px;min-height:95px;position:relative}.chain-step:not(:last-child):after{content:"→";position:absolute;right:-8px;top:39%;z-index:2;color:var(--orange-deep)}.chain-step span{font:10px Georgia;color:var(--orange-deep)}.chain-step b{display:block;font-size:10px;margin:8px 0 4px}.chain-step p{margin:0;font-size:8px;color:var(--muted);line-height:1.5}.barrier-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding:0 28px 26px}.barrier-block{border-top:2px solid var(--line);padding-top:13px}.barrier-block.instrument{border-color:var(--orange)}.barrier-block h3{font-size:12px;margin:0 0 9px}.barrier-block ul{padding-left:17px;margin:0}.barrier-block li{font-size:9px;line-height:1.8;color:var(--muted)}.analysis-source{border-top:1px solid var(--line);padding:13px 28px;display:flex;justify-content:space-between;align-items:center}.analysis-source span{font-size:8px;color:var(--muted)}.analysis-source a{font-size:8px;color:var(--orange-deep);text-decoration:none}
.light-off .home-insight,.light-off .field-guide,.light-off .standard-card,.light-off .accident-card,.light-off .accident-analysis{background:var(--surface)}.light-off .loop-diagram,.light-off .formula-strip,.light-off .standard-detail,.light-off .lifecycle span,.light-off .chain-step{background:#203035}.light-off .symptom-table>div:first-child{background:#25363a}.light-off .field-warning,.light-off .disclaimer{background:#38251e}.light-off .safety-entry,.light-off .safety-hero,.light-off .risk-focus{background:#081115}
.toast { position:fixed;z-index:100;left:50%;bottom:25px;transform:translate(-50%,20px);padding:10px 16px;background:var(--ink);color:white;font-size:10px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.25s; }.toast.show{opacity:1;transform:translate(-50%,0)}

/* Knowledge library */
.library-tools{padding:20px clamp(34px,5vw,78px) 0;display:flex;align-items:center;gap:14px}.library-tools label{height:42px;max-width:480px;flex:1;border:1px solid var(--line);background:var(--surface);display:flex;align-items:center;padding:0 14px;gap:10px}.library-tools label>span{font:20px Georgia;color:var(--orange-deep)}.library-tools input{width:100%;border:0;outline:0;background:transparent;font-size:10px;color:inherit}.library-update{display:flex;align-items:center;gap:7px;flex-wrap:wrap}.library-update b{font-size:8px;color:var(--muted)}.library-update span{font-size:8px;padding:5px 8px;border:1px solid var(--line);background:var(--surface)}.category-tabs{flex-wrap:wrap}.course-empty{grid-column:1/-1;min-height:240px;border:1px dashed var(--line);display:grid;place-content:center;text-align:center}.course-empty b,.course-empty span{display:block}.course-empty b{font-size:14px}.course-empty span{font-size:9px;color:var(--muted);margin-top:8px}
.modal-open{overflow:hidden}.lesson-modal{position:fixed;inset:0;z-index:90;display:grid;grid-template-columns:1fr minmax(500px,720px)}.lesson-backdrop{border:0;background:rgba(3,10,12,.64);backdrop-filter:blur(2px);cursor:pointer}.lesson-sheet{position:relative;background:var(--paper);height:100vh;overflow:auto;box-shadow:-20px 0 70px rgba(0,0,0,.22)}.lesson-close{position:absolute;z-index:2;right:24px;top:22px;width:36px;height:36px;border:1px solid rgba(255,255,255,.25);background:transparent;color:white;font-size:22px;cursor:pointer}.lesson-head{min-height:285px;background:var(--ink);color:#eef3ef;padding:38px 48px;position:relative;overflow:hidden}.lesson-head>span{font-size:8px;color:var(--orange);font-weight:700;letter-spacing:1px}.lesson-symbol{position:absolute;right:55px;bottom:12px;font:110px Georgia;color:#26363a}.lesson-head small{display:block;margin-top:42px;font:9px Georgia;color:#788884}.lesson-head h2{font-size:31px;margin:8px 0}.lesson-head p{font-size:10px;color:#97a49f;margin:0;max-width:450px}.lesson-head>div:last-child{display:flex;gap:8px;margin-top:24px}.lesson-head>div:last-child b{font-size:8px;border:1px solid #435257;padding:6px 9px}.lesson-body{padding:34px 48px 42px}.lesson-body section{margin-bottom:34px}.lesson-visual{margin:0 0 34px;border:1px solid var(--line);background:#101c20}.lesson-visual img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}.lesson-visual figcaption{padding:9px 12px;background:var(--surface);color:var(--muted);font-size:8px;line-height:1.5}.lesson-label{font-size:7px;color:var(--orange-deep);font-weight:800;letter-spacing:1.5px}.lesson-body h3{font-size:18px;margin:7px 0 16px}.objective-list{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;list-style:none;margin:0;padding:0}.objective-list li{min-height:88px;border:1px solid var(--line);background:var(--surface);padding:13px}.objective-list i{font:9px Georgia;color:var(--orange-deep);font-style:normal}.objective-list span{display:block;font-size:9px;line-height:1.5;margin-top:12px}.lesson-points{border-top:1px solid var(--line)}.lesson-points article{display:grid;grid-template-columns:38px 1fr;gap:12px;padding:17px 0;border-bottom:1px solid var(--line)}.lesson-points article>span{font:12px Georgia;color:var(--orange-deep)}.lesson-points b{font-size:11px}.lesson-points p{font-size:9px;line-height:1.8;color:var(--muted);margin:5px 0 0}.field-check{background:var(--surface);border:1px solid var(--line);padding:20px 23px}.field-check ol{display:grid;grid-template-columns:1fr 1fr;gap:9px 24px;margin:0;padding-left:20px}.field-check li{font-size:9px;line-height:1.6}.lesson-safety{border-left:3px solid var(--orange);background:#fff0e8;padding:14px 16px}.lesson-safety b{font-size:9px;color:#8d4327}.lesson-safety p{font-size:9px;line-height:1.7;color:#765345;margin:6px 0 0}.lesson-foot{position:sticky;bottom:0;min-height:68px;background:var(--surface);border-top:1px solid var(--line);padding:12px 48px;display:flex;align-items:center;justify-content:space-between}.lesson-foot span{font-size:8px;color:var(--muted)}.lesson-foot button{border:0;background:var(--orange);color:#24130c;padding:11px 15px;font-size:9px;font-weight:700;cursor:pointer}.light-off .lesson-safety{background:#38251e}

/* Instrument calculator */
.calculator-head{background-image:linear-gradient(100deg,transparent 62%,rgba(255,106,42,.08) 62%)}.calculator-stamp{display:flex;align-items:center;gap:11px;border-left:1px solid var(--line);padding-left:18px}.calculator-stamp b{font:42px Georgia;color:var(--orange-deep)}.calculator-stamp span{font-size:8px;line-height:1.5;color:var(--muted)}.calculator-layout{display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:24px;padding:26px clamp(34px,5vw,78px) 75px}.calculator-intro{margin-bottom:18px}.calculator-intro h2{font-size:21px;margin:6px 0}.calculator-intro p{max-width:650px;font-size:9px;line-height:1.7;color:var(--muted);margin:0}.calculator-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:11px}.calculator-card{min-height:116px;border:1px solid var(--line);background:var(--surface);padding:17px 18px;display:grid;grid-template-columns:1fr 48px;align-items:center;text-align:left;cursor:pointer;transition:.2s}.calculator-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.calculator-card.active{border-color:var(--orange);box-shadow:inset 3px 0 var(--orange)}.calculator-card b,.calculator-card small{display:block}.calculator-card b{font-size:14px}.calculator-card small{font-size:8px;color:var(--muted);line-height:1.5;margin-top:7px}.calculator-card>span{width:45px;height:45px;border-radius:50%;background:#e8ede8;display:grid;place-items:center;font:12px Georgia;color:var(--orange-deep)}.calculator-workbench{align-self:start;position:sticky;top:18px;background:var(--ink);color:#e9f0ec;min-height:590px;padding:25px}.calc-work-head{display:flex;gap:14px;align-items:center;border-bottom:1px solid #334247;padding-bottom:18px}.calc-work-head>span{width:52px;height:52px;display:grid;place-items:center;border:1px solid #45555a;color:var(--orange);font:13px Georgia}.calc-work-head small{font-size:7px;color:#73837f;letter-spacing:1.2px}.calc-work-head h2{font-size:20px;margin:5px 0 3px}.calc-work-head p{font-size:8px;color:#82918d;margin:0}.calculator-form{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px}.calc-field{display:grid;gap:6px}.calc-field.full{grid-column:1/-1}.calc-field label{font-size:8px;color:#8d9b97}.calc-field input,.calc-field select{width:100%;height:40px;border:1px solid #3c4c50;background:#142227;color:#e9f0ec;padding:0 10px;font-size:10px;outline:0}.calc-field input:focus,.calc-field select:focus{border-color:var(--orange)}.calc-submit{grid-column:1/-1;height:43px;border:0;background:var(--orange);color:#21120c;font-size:10px;font-weight:800;cursor:pointer;margin-top:4px}.calculator-result{margin-top:18px;border:1px solid #39494d;background:#111e22;padding:16px}.calculator-result>span{font-size:7px;color:#7f8e8a;letter-spacing:1px}.calculator-result>p{font-size:9px;color:#8f9d99;line-height:1.6;margin:7px 0 0}.calc-main{display:flex;justify-content:space-between;align-items:end;border-bottom:1px solid #344448;padding-bottom:12px}.calc-main span{font-size:8px;color:#81908c}.calc-main b{font:25px Georgia;color:var(--mint);text-align:right}.calc-details{display:grid;gap:7px;margin-top:12px}.calc-details div{display:flex;justify-content:space-between;gap:20px;font-size:8px;color:#8b9995}.calc-details b{color:#dce5e0;text-align:right}.calc-formula{margin-top:12px;padding:10px;background:#1b2b30;font:9px ui-monospace,SFMono-Regular,monospace;color:#a9b7b2;line-height:1.6}.calculator-boundary{margin-top:14px;border-left:2px solid var(--orange);padding-left:10px;font-size:8px;line-height:1.6;color:#84938f}.light-off .calculator-card{background:var(--surface)}.light-off .calculator-card>span{background:#203035}

body.light-off { --paper:#111b1f;--surface:#172429;--ink:#ecf2ee;--ink-2:#0b1417;--line:#334247;--muted:#91a09c;color:#e8eeea }.light-off .sidebar{background:#081014}.light-off .hero-search{background:#18262a}.light-off .meter-face{background:#dfe5df;color:#0c171b}.light-off .map-card{background:#172429}.light-off .topbar,.light-off .page-head{background:#111b1f}.light-off .option:hover,.light-off .option.selected{background:#223237}.light-off .explanation{background:#21352d}.light-off .catalog-card{background:#172429}.light-off .notes-board{background:#172429}.light-off .ai-search-box,.light-off .ai-answer,.light-off .aside-card{background:#172429}

@media(max-width:1100px){.app-shell{grid-template-columns:82px 1fr}.sidebar{width:82px;padding:26px 12px}.brand{padding:0 10px 30px}.brand>span:last-child,.nav-item span:nth-child(2),.nav-item em,.nav-item>i,.sidebar-label,.sidebar-footer>div:last-child{display:none}.nav-item{justify-content:center;padding:0}.nav-item strong{position:absolute;right:3px;top:3px}.sidebar-footer{justify-content:center;padding-left:0;padding-right:0}.main-panel{grid-column:2}.hero-grid{grid-template-columns:1fr}.hero-visual{display:none}.map-cards{grid-template-columns:repeat(2,1fr)}.dashboard-grid{grid-template-columns:1fr}.search-layout,.learn-layout,.review-layout,.technical-layout,.safety-layout{grid-template-columns:1fr}.search-aside{grid-template-columns:1fr 1fr}.path-panel,.mastery-panel,.technical-aside{position:static}.technical-aside{grid-template-columns:1fr 1fr}.course-grid{grid-template-columns:repeat(2,1fr)}.safety-aside{grid-template-columns:1fr 1fr}.home-insight-grid{grid-template-columns:1fr}}
@media(max-width:1100px){.calculator-layout{grid-template-columns:1fr}.calculator-workbench{position:static}.calculator-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:700px){.app-shell{display:block}.sidebar{position:fixed;inset:auto 0 0;width:auto;height:65px;padding:7px 6px;flex-direction:row;z-index:50;overflow:hidden}.brand,.sidebar-label,.secondary,.sidebar-footer{display:none}.nav-list{width:100%;display:flex;justify-content:space-around}.nav-item{width:16.666%;display:flex;flex-direction:column;gap:1px;min-height:50px}.nav-item span:nth-child(2){display:block;font-size:7px}.nav-icon{font-size:15px}.main-panel{padding-bottom:65px}.topbar{height:58px;padding:0 17px}.plant-status{font-size:8px}.plant-status i,.plant-status i~*{display:none}.profile span,.profile button,.icon-button:first-child{display:none}.hero-copy{padding:45px 20px}.hero-copy h1{font-size:42px}.hero-search{grid-template-columns:36px 1fr;height:auto;padding:5px}.hero-search button{grid-column:1/3;width:100%;margin-top:4px}.dashboard-grid,.knowledge-map,.search-layout,.learn-layout,.review-layout,.technical-layout,.safety-layout{padding-left:16px;padding-right:16px}.home-insight-grid{padding-left:16px;padding-right:16px}.home-insight{grid-template-columns:1fr}.insight-body{border-left:0;border-top:1px solid var(--line);padding:15px 0 0}.map-cards,.course-grid,.options,.accident-grid{grid-template-columns:1fr}.page-head{padding:30px 18px 22px;min-height:150px}.page-head h1{font-size:29px}.terminal-status,.learn-stat,.edition-stamp,.bank-stat{display:none}.review-head-stats{gap:0}.search-aside,.technical-aside,.safety-aside{grid-template-columns:1fr}.diagnosis-grid,.standard-summary,.barrier-grid{grid-template-columns:1fr}.ai-search-box{grid-template-columns:34px 1fr}.ai-search-box button{grid-column:1/3;width:100%}.answer-actions span{display:none}.quiz-body{padding:25px 20px}.course-card.featured{grid-template-columns:50px 1fr}.course-card .round-arrow{display:none}.field-guide{grid-template-columns:55px 1fr}.guide-side{padding:16px 10px}.guide-side b{font-size:28px}.guide-main{padding:18px}.loop-diagram,.lifecycle,.pid-row{justify-content:flex-start;overflow:auto}.symptom-table>div{grid-template-columns:.55fr .9fr 1.3fr}.safety-hero{padding:38px 18px;min-height:230px}.safety-hero h1{font-size:34px}.safety-radar{display:none}.safety-ticker{padding:10px 18px;flex-wrap:wrap}.safety-ticker p{order:3;flex-basis:100%;margin:0}.safety-updates{padding:20px 16px 4px}.safety-updates-head{display:block}.safety-updates-head>b{display:block;margin-top:10px;font-size:20px}.safety-update-grid{grid-template-columns:1fr}.safety-update-card{min-height:0}.event-chain{grid-template-columns:1fr;padding:18px}.chain-step:not(:last-child):after{content:"↓";right:50%;top:auto;bottom:-10px}.analysis-head,.barrier-grid,.analysis-source{padding-left:18px;padding-right:18px}.accident-analysis{margin-left:16px;margin-right:16px}}
@media(max-width:700px){.library-tools{padding:16px 16px 0;display:block}.library-tools label{max-width:none}.library-update{margin-top:9px}.category-tabs{padding-left:16px;padding-right:16px;overflow:auto;flex-wrap:nowrap}.category-tabs button{white-space:nowrap}.lesson-modal{display:block}.lesson-backdrop{display:none}.lesson-sheet{width:100%}.lesson-head{min-height:250px;padding:30px 22px}.lesson-head h2{font-size:26px}.lesson-symbol{right:15px;font-size:80px}.lesson-body{padding:25px 20px 35px}.objective-list{grid-template-columns:1fr}.field-check ol{grid-template-columns:1fr}.lesson-foot{padding:10px 20px}.lesson-foot span{display:none}.lesson-close{right:16px;top:16px}}
@media(max-width:700px){.review-modes{padding:16px 16px 0;display:flex;overflow:auto}.review-modes>button{min-width:210px}.chapter-picker{margin-left:16px;margin-right:16px;align-items:stretch;flex-direction:column}.chapter-picker label{max-width:none}.chapter-picker button{width:100%}.review-layout{padding-top:18px}.line-chart svg{height:150px}.learning-archive{margin:0 16px;display:block;padding:14px}.archive-actions{margin-top:12px;display:grid;grid-template-columns:1fr 1fr}.archive-actions button{width:100%}}
@media(max-width:700px){.nav-item{width:14.285%}.nav-item span:nth-child(2){font-size:6.5px}.calculator-stamp{display:none}.calculator-layout{padding:18px 16px 75px}.calculator-grid{grid-template-columns:1fr 1fr}.calculator-card{min-height:104px;padding:14px;grid-template-columns:1fr 38px}.calculator-card>span{width:36px;height:36px;font-size:10px}.calculator-card b{font-size:12px}.calculator-workbench{min-height:0;padding:20px}.calculator-form{grid-template-columns:1fr}.calc-field.full,.calc-submit{grid-column:1}.calc-main{display:block}.calc-main b{display:block;text-align:left;margin-top:8px}}

/* 475 Field Communicator training simulator */
.communicator-head{background-image:linear-gradient(112deg,transparent 55%,rgba(20,102,143,.08) 55%)}.sim-status{display:flex;align-items:center;gap:10px;border-left:1px solid var(--line);padding-left:18px}.sim-status>i{width:10px;height:10px;border-radius:50%;background:#3bbf8c;box-shadow:0 0 0 5px rgba(59,191,140,.12)}.sim-status span{font-size:7px;letter-spacing:1px;color:var(--muted);line-height:1.6}.sim-status b{font-size:8px;color:var(--ink);letter-spacing:0}.communicator-layout{display:grid;grid-template-columns:minmax(520px,1fr) 320px;gap:26px;padding:28px clamp(34px,5vw,78px) 80px;align-items:start}.communicator-stage{min-height:940px;background:radial-gradient(circle at 50% 35%,#f9fbf9 0,#e1e7e4 48%,#cad3d0 100%);border:1px solid var(--line);display:flex;justify-content:center;align-items:flex-start;padding:28px;overflow:hidden;position:relative}.communicator-stage:before{content:"475 FIELD TRAINING";position:absolute;right:20px;top:18px;color:#aeb9b5;font:8px ui-monospace,SFMono-Regular,monospace;letter-spacing:2px}.fc475-device{width:420px;min-height:875px;border-radius:52px 52px 75px 75px;padding:18px 31px 26px;color:#e9f2f6;background:linear-gradient(90deg,#0878b2 0 6%,#1298da 7% 11%,#25343c 12% 88%,#1298da 89% 93%,#0878b2 94%);border:3px solid #075d8e;box-shadow:inset 0 0 0 5px rgba(16,163,225,.45),inset 0 -20px 35px rgba(0,0,0,.24),0 28px 45px rgba(25,46,53,.25);position:relative;user-select:none}.fc475-device:before,.fc475-device:after{content:"";position:absolute;top:150px;bottom:105px;width:15px;border-radius:10px;background:repeating-linear-gradient(#086da2 0 16px,#0d8ec8 17px 24px)}.fc475-device:before{left:5px}.fc475-device:after{right:5px}.fc475-top,.fc475-bottom,.fc475-brandline{display:flex;justify-content:space-between;align-items:center}.fc475-top{height:25px;padding:0 8px;font-size:7px;color:#b4c5cd}.fc475-port{padding:3px 7px;border-radius:5px;background:#17252b;border:1px solid #465860}.fc475-screen-bezel{border-radius:10px;background:#0d171b;padding:10px;border:2px solid #4a5b62;box-shadow:0 3px 8px #071013}.fc475-screen{height:260px;background:#d9e7e5;border:2px solid #80999d;color:#07171a;overflow:hidden;position:relative;font-family:Arial,"Microsoft YaHei",sans-serif;transition:.2s}.fc475-screen.off{background:#142023;box-shadow:inset 0 0 35px #03090b}.fc475-screen.dim{filter:brightness(.48)}.fc475-boot{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(145deg,#21444b,#489087 48%,#d7e79e);color:white;text-shadow:0 1px 2px rgba(0,0,0,.4)}.fc475-boot b{font:58px Arial;font-weight:300;line-height:.9}.fc475-boot span{font-size:12px;font-weight:700;letter-spacing:1.2px}.fc475-boot small{font-size:8px;margin-top:22px;color:#eaf3e9}.fc475-ui{height:100%;display:grid;grid-template-rows:20px 30px 1fr 28px;background:#dce8e7}.fc475-statusbar{display:flex;justify-content:space-between;align-items:center;padding:0 7px;background:#173c48;color:#f4f8f8;font-size:7px}.fc475-statusbar span:first-child{color:#8de0b6}.fc475-title{display:flex;align-items:center;padding:0 9px;background:linear-gradient(#edf5f3,#c1d5d5);border-bottom:1px solid #8aa3a6;font-size:10px;font-weight:700}.fc475-content{overflow:auto;padding:6px;background:linear-gradient(135deg,#e5efed,#cfdddd)}.fc475-softkeys{display:grid;grid-template-columns:1fr 1fr;background:#58777c;border-top:1px solid #294b53}.fc475-softkeys button{border:0;border-right:1px solid #34575e;background:linear-gradient(#759499,#55747a);color:white;font-size:8px;font-weight:700;cursor:pointer}.fc475-softkeys button:active{background:#31565f}.fc-menu-list{display:grid;gap:2px}.fc-menu-item{width:100%;min-height:27px;border:1px solid transparent;background:rgba(255,255,255,.36);display:grid;grid-template-columns:20px 1fr 12px;align-items:center;gap:5px;padding:3px 5px;color:#102328;text-align:left;font-size:8px;line-height:1.2;cursor:pointer}.fc-menu-item>i{font-style:normal;color:#20759b;font-weight:700;text-align:center}.fc-menu-item>span:last-child{color:#557278;text-align:right}.fc-menu-item.selected{background:linear-gradient(#2b86ae,#176489);border-color:#0e506e;color:white}.fc-menu-item.selected>i,.fc-menu-item.selected>span:last-child{color:white}.fc-menu-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;height:100%}.fc-menu-grid .fc-menu-item{display:flex;min-height:75px;flex-direction:column;justify-content:center;text-align:center;padding:4px;border-color:#b0c4c4;background:linear-gradient(#f5faf9,#c9d9d8);font-size:7px}.fc-menu-grid .fc-menu-item>i{width:31px;height:31px;border-radius:5px;display:grid;place-items:center;color:white;background:linear-gradient(145deg,#40a1c5,#156384);font-size:14px;box-shadow:0 2px 3px rgba(0,0,0,.18)}.fc-menu-grid .fc-menu-item.selected{color:#102328;border:2px solid #e98b24;background:#fff8df}.fc-menu-grid .fc-menu-item.selected>i{color:white}.fc-detail{display:grid;gap:3px}.fc-detail-row{display:flex;justify-content:space-between;gap:10px;padding:6px 7px;background:rgba(255,255,255,.46);border-bottom:1px solid #b7c9c8;font-size:8px}.fc-detail-row b{font-weight:400;color:#28474d}.fc-detail-row span{font-weight:700;text-align:right}.fc-message{height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:10px}.fc-message>i{font-style:normal;font-size:28px;color:#23759a}.fc-message b{font-size:10px;margin:6px 0}.fc-message p{font-size:8px;line-height:1.45;margin:0;color:#35555b}.fc-progress{width:84%;height:7px;border:1px solid #739398;margin-top:12px;padding:1px}.fc-progress i{display:block;width:68%;height:100%;background:#2f8fb4;animation:fcScan 1.1s ease-in-out infinite alternate}@keyframes fcScan{from{width:12%}to{width:92%}}.fc475-brandline{padding:8px 7px 4px}.fc475-brandline span{font-size:8px}.fc475-brandline span b{font-size:21px;color:#e9f0f1}.fc475-brandline small{font-size:6px;color:#9dacb2;text-align:right}.fc475-controls{display:grid;grid-template-columns:55px 1fr 55px;align-items:center;margin:2px 8px 8px}.fc475-controls button,.fc475-keypad button{color:#e6eef1;border:1px solid #52636a;background:linear-gradient(#35464d,#17252b);box-shadow:0 2px 3px #081115;cursor:pointer}.fc475-controls button:active,.fc475-keypad button:active{transform:translateY(1px);background:#0b83ba}.fc475-sidekeys,.fc475-functionkeys{display:grid;gap:15px;justify-items:center}.fc475-sidekeys button,.fc475-functionkeys button{width:40px;height:30px;border-radius:5px;font-size:10px}.fc475-sidekeys .fc-power{color:#ff8b4b}.fc475-dpad{width:126px;height:126px;margin:auto;border-radius:50%;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);padding:5px;background:#111d22;border:3px solid #4c5c63;box-shadow:inset 0 0 9px #020607}.fc475-dpad button{border-radius:5px;font-size:9px}.fc475-dpad button:nth-child(1){grid-column:2}.fc475-dpad button:nth-child(2){grid-column:1;grid-row:2}.fc475-dpad .fc-enter{grid-column:2;grid-row:2;border-radius:50%;background:linear-gradient(#209aca,#0a6d9e);font-size:8px}.fc475-dpad button:nth-child(4){grid-column:3;grid-row:2}.fc475-dpad button:nth-child(5){grid-column:2;grid-row:3}.fc475-keypad{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:0 48px}.fc475-keypad button{height:43px;border-radius:5px;display:grid;grid-template-columns:1fr 1.2fr;align-items:center;padding:0 10px}.fc475-keypad b{font-size:14px}.fc475-keypad small{font-size:6px;color:#93a7ae;letter-spacing:.6px}.fc475-bottom{margin:15px 10px 0;padding-top:8px;border-top:1px solid #526269;font-size:6px;color:#91a3aa}.communicator-guide{display:grid;gap:14px;position:sticky;top:18px}.sim-disclaimer,.sim-lesson,.sim-help{border:1px solid var(--line);background:var(--surface);padding:18px}.sim-disclaimer{border-left:3px solid var(--orange);background:#fff4ed}.sim-disclaimer b{font-size:10px;color:#874328}.sim-disclaimer p{font-size:8px;line-height:1.7;color:#765b4e;margin:6px 0 0}.sim-lesson h2{font-size:18px;margin:6px 0 14px}.sim-lesson ol{list-style:none;margin:0;padding:0}.sim-lesson li{display:grid;grid-template-columns:30px 1fr;gap:10px;align-items:center;border-top:1px solid var(--line);padding:10px 0;color:var(--muted)}.sim-lesson li>i{font:10px Georgia;font-style:normal}.sim-lesson li b,.sim-lesson li span{display:block}.sim-lesson li b{font-size:8px}.sim-lesson li span{font-size:7px;margin-top:3px}.sim-lesson li.active{color:var(--ink)}.sim-lesson li.active>i{color:var(--orange-deep)}.sim-lesson li.done{color:#42866d}.sim-lesson li.done>i:after{content:" ✓"}.sim-help{display:grid;grid-template-columns:1fr 1fr;gap:12px}.sim-help b,.sim-help span{display:block}.sim-help b{font-size:8px}.sim-help span{font-size:7px;color:var(--muted);margin-top:3px}.sim-reset{height:44px;border:0;background:var(--ink);color:white;padding:0 15px;display:flex;justify-content:space-between;align-items:center;font-size:9px;cursor:pointer}.light-off .communicator-stage{background:radial-gradient(circle at 50% 35%,#23353a,#101d21)}.light-off .sim-status b{color:#e4ebe7}.light-off .sim-disclaimer{background:#38251e}.light-off .sim-disclaimer p{color:#c7a99c}

@media(max-width:1100px){.communicator-layout{grid-template-columns:1fr}.communicator-guide{position:static;grid-template-columns:1fr 1fr}.sim-disclaimer,.sim-reset{grid-column:1/-1}.communicator-stage{min-height:925px}}
@media(max-width:700px){.sim-status{display:none}.communicator-layout{padding:16px 0 75px}.communicator-stage{border-left:0;border-right:0;min-height:735px;padding:18px 0}.fc475-device{transform:scale(.79);transform-origin:top center;margin-bottom:-180px}.communicator-guide{grid-template-columns:1fr;margin:0 16px}.sim-disclaimer,.sim-device-library,.sim-reset{grid-column:auto}.nav-list{overflow-x:auto;justify-content:flex-start;scrollbar-width:none}.nav-list::-webkit-scrollbar{display:none}.nav-item{flex:0 0 55px;width:55px}.nav-item span:nth-child(2){font-size:6px}.nav-icon{font-size:12px}}

/* Field assistant */
.home-insight-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.field-entry{background:linear-gradient(135deg,#eef4ef,#fff8f1)}.field-head{background-image:linear-gradient(112deg,transparent 56%,rgba(77,143,110,.11) 56%)}.field-stamp{border:1px solid var(--line);display:flex;align-items:center;gap:12px;padding:12px 16px;background:rgba(255,255,255,.4)}.field-stamp b{font:34px Georgia;color:var(--orange-deep)}.field-stamp span{font-size:8px;line-height:1.5;color:var(--muted)}.field-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;padding:30px clamp(34px,5vw,78px) 24px}.field-diagnoser,.calibration-lab,.field-tool-card{background:var(--surface);border:1px solid var(--line);box-shadow:0 10px 28px rgba(15,30,34,.04)}.field-diagnoser{padding:24px}.field-panel-head{display:flex;align-items:start;justify-content:space-between;gap:18px;margin-bottom:18px}.field-panel-head h2{font-size:21px;margin:6px 0}.field-panel-head p{margin:0;color:var(--muted);font-size:9px;line-height:1.7}.field-panel-head>span{font-size:8px;color:var(--orange-deep);border:1px solid #d9b49f;background:#fff3eb;padding:6px 9px;white-space:nowrap}.field-form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.field-form-grid label{display:grid;gap:7px;font-size:8px;color:var(--muted);font-weight:700}.field-form-grid input,.field-form-grid select,.field-form-grid textarea{width:100%;min-width:0;border:1px solid var(--line);background:transparent;color:var(--ink);padding:10px;outline:0;font-size:10px;line-height:1.5}.field-form-grid textarea{resize:vertical}.field-form-grid input:focus,.field-form-grid select:focus,.field-form-grid textarea:focus{border-color:#7e9188;background:#f7faf5}.field-full{grid-column:1/-1}.field-actions{display:flex;align-items:center;gap:12px;margin-top:16px}.field-result{margin-top:22px;border:1px solid var(--line);background:#eef3ee;min-height:170px;padding:20px}.field-result.empty{display:grid;place-content:center;text-align:center;color:var(--muted);font-size:10px}.field-result-head{display:flex;justify-content:space-between;gap:16px;border-bottom:1px solid #d4ddd5;padding-bottom:14px;margin-bottom:14px}.field-result-head h3{font-size:18px;margin:4px 0}.field-result-head p{margin:0;color:var(--muted);font-size:9px;line-height:1.7}.risk-pill{height:30px;display:inline-grid;place-items:center;padding:0 10px;background:var(--ink);color:white;font-size:8px}.field-result-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field-checklist,.field-causes,.field-stop{background:var(--surface);border:1px solid var(--line);padding:15px}.field-checklist h4,.field-causes h4,.field-stop h4{font-size:11px;margin:0 0 10px}.field-checklist ol,.field-causes ul,.field-stop ul{margin:0;padding-left:18px}.field-checklist li,.field-causes li,.field-stop li{font-size:9px;line-height:1.75;color:var(--muted)}.field-stop{grid-column:1/-1;border-left:3px solid var(--orange);background:#fff4ed}.field-side{display:grid;gap:14px;align-content:start}.field-tool-card{padding:20px}.field-tool-card h2{font-size:18px;margin:7px 0 9px}.field-tool-card p,.field-tool-card li{font-size:9px;line-height:1.75;color:var(--muted)}.field-tool-card ul{margin:0;padding-left:18px}.field-tool-card button{width:100%;height:44px;border:0;background:var(--ink);color:white;font-size:10px;font-weight:700;cursor:pointer;margin-top:12px;display:flex;align-items:center;justify-content:space-between;padding:0 14px}.nameplate-card{background:#fff7ef;border-left:3px solid var(--orange)}.calibration-lab{margin:0 clamp(34px,5vw,78px) 80px;padding:24px}.calibration-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px}.cal-points{margin-top:16px;border:1px solid var(--line);background:#eef3ee}.cal-points>div{display:grid;grid-template-columns:.7fr 1fr 1fr 1fr;gap:8px;align-items:center;padding:8px 10px;border-bottom:1px solid #d7ded8}.cal-points>div:first-child{background:var(--ink);color:white;font-size:8px;font-weight:700}.cal-points>div:last-child{border-bottom:0}.cal-points span{font-size:9px}.cal-points input{height:34px;border:1px solid var(--line);background:var(--surface);padding:0 8px;font-size:10px}.calibration-result{border:1px solid var(--line);background:var(--ink);color:#edf5ef;padding:20px;align-self:start;position:sticky;top:18px}.calibration-result>span{font-size:8px;color:var(--orange);letter-spacing:1px}.calibration-result h3{font-size:22px;margin:8px 0}.calibration-result p{font-size:9px;line-height:1.7;color:#95a6a1}.cal-metrics{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:15px}.cal-metrics div{border:1px solid #3c4c50;padding:10px}.cal-metrics span,.cal-metrics b{display:block}.cal-metrics span{font-size:7px;color:#8da09a}.cal-metrics b{font:16px Georgia;color:white;margin-top:4px}.cal-pass{color:#8bd4b1!important}.cal-fail{color:#ff986f!important}.calibration-records{margin-top:22px;border-top:1px solid var(--line);padding-top:18px}.calibration-records .aside-title{display:flex;justify-content:space-between;align-items:center;gap:12px}.calibration-records .aside-title h3{margin:0;font-size:15px}.calibration-records .aside-title button{border:1px solid var(--line);background:transparent;padding:7px 9px;font-size:8px;cursor:pointer;margin-left:5px}.record-list{display:grid;gap:8px;margin-top:12px}.record-row{display:grid;grid-template-columns:1fr auto auto;gap:10px;align-items:center;border:1px solid var(--line);background:#f4f7f3;padding:11px 13px}.record-row b,.record-row span,.record-row small{display:block}.record-row b{font-size:11px}.record-row small{font-size:8px;color:var(--muted);margin-top:3px}.record-row>span{font:15px Georgia;color:var(--orange-deep)}.record-row i{font-style:normal;font-size:8px;padding:5px 8px;background:#e5eee8;color:#317154}.record-row i.fail{background:#fff0e8;color:#a34d2e}.light-off .field-stamp,.light-off .field-result,.light-off .cal-points,.light-off .record-row{background:#172428}.light-off .field-form-grid input,.light-off .field-form-grid select,.light-off .field-form-grid textarea,.light-off .cal-points input{background:#101b1f;color:#e8efeb}.light-off .field-stop,.light-off .nameplate-card{background:#37261f}.light-off .calibration-result{background:#081116}
.calculator-entry{background:linear-gradient(135deg,#fff6ed,#eef3f6)}.calculator-entry .hot-label{color:#a14923}.archive-entry{background:linear-gradient(135deg,#edf6ef,#f9f6ea)}.archive-entry .insight-body b{color:#317154}.light-off .calculator-entry,.light-off .archive-entry{background:#172429}
@media(max-width:1100px){.home-insight-grid{grid-template-columns:1fr}.field-layout,.calibration-grid{grid-template-columns:1fr}.field-side{grid-template-columns:1fr 1fr}.calibration-result{position:static}.field-form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.field-stamp{display:none}.field-layout{padding:18px 16px 18px;grid-template-columns:1fr}.field-diagnoser,.calibration-lab,.field-tool-card{box-shadow:none}.field-diagnoser,.calibration-lab{padding:18px}.field-form-grid,.field-result-grid,.field-side{grid-template-columns:1fr}.field-actions{align-items:stretch;flex-direction:column}.field-actions .primary-button,.field-actions .ghost-button{width:100%;height:44px}.calibration-lab{margin:0 16px 78px}.cal-points{overflow:auto}.cal-points>div{min-width:560px}.calibration-records .aside-title{align-items:flex-start;flex-direction:column}.record-row{grid-template-columns:1fr}.risk-pill{justify-self:start}.field-result-head{display:block}.home-insight-grid{grid-template-columns:1fr}}

/* Verified safety hotspot library */
.hotspot-library{margin:30px clamp(34px,5vw,78px) 8px;padding:28px;background:var(--surface);border:1px solid var(--line);box-shadow:0 12px 34px rgba(15,30,34,.04)}
.hotspot-library-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.hotspot-library-head h2{font-size:26px;margin:7px 0 6px}.hotspot-library-head p{max-width:720px;margin:0;color:var(--muted);font-size:9px;line-height:1.75}
.hotspot-count{flex:none;min-width:150px;padding-left:18px;border-left:2px solid var(--orange)}.hotspot-count b,.hotspot-count span,.hotspot-count small{display:block}.hotspot-count b{font:36px Georgia;color:var(--orange-deep)}.hotspot-count span{font-size:8px;color:var(--muted)}.hotspot-count small{margin-top:7px;font-size:7px;color:var(--orange-deep)}
.hotspot-stats{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line);border-right:0;margin-top:18px}.hotspot-stats>div{padding:12px 14px;border-right:1px solid var(--line)}.hotspot-stats b,.hotspot-stats span{display:block}.hotspot-stats b{font:20px Georgia}.hotspot-stats span{font-size:7px;color:var(--muted);margin-top:3px}
.hotspot-toolbar{display:grid;grid-template-columns:minmax(240px,1.5fr) repeat(3,minmax(120px,.7fr));gap:10px;margin-top:18px}.hotspot-toolbar label{display:grid;gap:6px}.hotspot-toolbar label>span{font-size:8px;font-weight:700;color:var(--muted)}.hotspot-toolbar input,.hotspot-toolbar select{width:100%;min-width:0;height:41px;border:1px solid var(--line);background:transparent;color:var(--ink);padding:0 11px;outline:0;font-size:9px}.hotspot-toolbar input:focus,.hotspot-toolbar select:focus{border-color:#7d9088;background:#f9fbf7}
.hotspot-result-line{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:16px 0 10px}.hotspot-result-line span{font-size:8px;color:var(--muted)}.hotspot-result-line small{margin-left:auto;font-size:7px;color:var(--muted)}.hotspot-result-line button{border:0;background:transparent;color:var(--orange-deep);font-size:8px;cursor:pointer;white-space:nowrap}
.hotspot-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.hotspot-card{min-height:225px;border:1px solid var(--line);background:#f1f4ef;padding:15px;display:flex;flex-direction:column}.hotspot-card:hover{border-color:#aebbb3;background:#f8faf6}.hotspot-card-top{display:flex;align-items:start;justify-content:space-between;gap:8px}.hotspot-index{font:11px Georgia;color:var(--orange-deep)}.hotspot-state{max-width:120px;font-size:7px;font-style:normal;text-align:right;color:var(--muted)}.hotspot-card h3{font-size:14px;line-height:1.45;margin:11px 0 7px}.hotspot-card>p{font-size:8.5px;line-height:1.68;color:var(--muted);margin:0}.hotspot-tags{display:flex;flex-wrap:wrap;gap:5px;margin:12px 0}.hotspot-tags span{border:1px solid var(--line);padding:3px 5px;font-size:7px;color:var(--muted);background:var(--surface)}.hotspot-card-foot{margin-top:auto;padding-top:11px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:8px}.hotspot-card-foot span{font-size:7px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hotspot-card-foot button{flex:none;border:0;background:var(--ink);color:white;padding:7px 9px;font-size:7px;cursor:pointer}
.hotspot-empty{min-height:150px;border:1px dashed var(--line);display:grid;place-content:center;text-align:center;color:var(--muted)}.hotspot-empty b{font-size:12px;color:var(--ink)}.hotspot-empty span{font-size:8px;margin-top:6px}
.hotspot-pagination{display:flex;align-items:center;justify-content:center;gap:5px;margin:18px 0 0}.hotspot-pagination button{min-width:30px;height:30px;border:1px solid var(--line);background:transparent;font-size:8px;cursor:pointer}.hotspot-pagination button.active{background:var(--ink);border-color:var(--ink);color:white}.hotspot-pagination button:disabled{opacity:.35;cursor:not-allowed}
.hotspot-detail{margin-top:20px;border:1px solid var(--line);background:#edf2ed}.hotspot-detail-head{display:flex;align-items:start;justify-content:space-between;gap:18px;padding:20px;border-bottom:1px solid var(--line)}.hotspot-detail-head span{font-size:8px;color:var(--orange-deep);font-weight:700}.hotspot-detail-head h3{font-size:21px;margin:6px 0}.hotspot-detail-head p{font-size:8px;color:var(--muted);margin:0}.hotspot-detail-head button{flex:none;width:32px;height:32px;border:1px solid var(--line);background:transparent;cursor:pointer}.hotspot-detail-body{display:grid;grid-template-columns:1.25fr .75fr;gap:15px;padding:20px}.hotspot-fact,.hotspot-learning{border:1px solid var(--line);background:var(--surface);padding:15px}.hotspot-fact h4,.hotspot-learning h4{font-size:10px;margin:0 0 8px}.hotspot-fact p,.hotspot-learning p{font-size:9px;line-height:1.75;color:var(--muted);margin:0}.hotspot-learning{border-left:3px solid var(--orange)}.hotspot-detail-source{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 20px;border-top:1px solid var(--line)}.hotspot-detail-source span{font-size:8px;color:var(--muted)}.hotspot-detail-source a{font-size:8px;color:var(--orange-deep);text-decoration:none;white-space:nowrap}
.deep-analysis-heading{padding:34px clamp(34px,5vw,78px) 0}.deep-analysis-heading h2{font-size:24px;margin:7px 0 5px}.deep-analysis-heading p{font-size:9px;color:var(--muted);margin:0;line-height:1.7}
.light-off .hotspot-library,.light-off .hotspot-card,.light-off .hotspot-detail,.light-off .hotspot-fact,.light-off .hotspot-learning{background:var(--surface)}.light-off .hotspot-toolbar input,.light-off .hotspot-toolbar select{background:#101b1f;color:#e8efeb}.light-off .hotspot-tags span{background:#172428}
@media(max-width:1100px){.hotspot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hotspot-toolbar{grid-template-columns:repeat(2,minmax(0,1fr))}.hotspot-search{grid-column:1/-1}}
@media(max-width:700px){.hotspot-library{margin:20px 16px 8px;padding:18px}.hotspot-library-head{display:block}.hotspot-count{margin-top:16px;padding-left:12px}.hotspot-stats{grid-template-columns:repeat(2,1fr)}.hotspot-stats>div:last-child{grid-column:1/-1}.hotspot-toolbar,.hotspot-grid,.hotspot-detail-body{grid-template-columns:1fr}.hotspot-search{grid-column:auto}.hotspot-result-line{align-items:flex-start;flex-wrap:wrap}.hotspot-result-line small{order:3;flex-basis:100%;margin-left:0}.hotspot-card{min-height:0}.hotspot-pagination{flex-wrap:wrap}.hotspot-detail-source{align-items:flex-start;flex-direction:column}.deep-analysis-heading{padding:28px 16px 0}}

/* Local asset register and calculator memory */
.instrument-ledger{margin:0 clamp(34px,5vw,78px) 80px;padding:24px;background:var(--surface);border:1px solid var(--line);box-shadow:0 10px 28px rgba(15,30,34,.04)}
.ledger-layout{display:grid;grid-template-columns:minmax(0,1fr) 245px;gap:20px;align-items:start}
.ledger-form{min-width:0}.ledger-summary{min-height:145px;background:var(--ink);color:#edf5ef;padding:18px;display:flex;flex-direction:column;justify-content:center}.ledger-summary-number{display:flex;align-items:baseline;gap:8px}.ledger-summary-number b{font:35px Georgia;color:var(--mint)}.ledger-summary-number span{font-size:9px;color:#a5b5af}.ledger-summary p{font-size:9px;line-height:1.7;color:#9aaba5;margin:9px 0 0}.ledger-summary p strong{color:#ff9a72}.ledger-records{margin-top:22px;border-top:1px solid var(--line);padding-top:18px}.ledger-records .aside-title{display:flex;justify-content:space-between;align-items:center}.ledger-records .aside-title h3{margin:0;font-size:15px}.ledger-records .aside-title button{border:1px solid var(--line);background:transparent;padding:7px 9px;font-size:8px;cursor:pointer}.ledger-row{display:grid;grid-template-columns:1fr auto auto;gap:12px;align-items:center;border:1px solid var(--line);background:#f4f7f3;padding:11px 13px}.ledger-row b,.ledger-row small{display:block}.ledger-row b{font-size:11px}.ledger-row small{font-size:8px;color:var(--muted);margin-top:4px;line-height:1.5}.ledger-row>button{width:25px;height:25px;border:1px solid var(--line);background:transparent;color:var(--muted);font-size:16px;cursor:pointer}.ledger-due{font-size:8px;padding:6px 8px;white-space:nowrap}.ledger-ok{background:#e5eee8;color:#317154}.ledger-soon{background:#fff4dd;color:#99621f}.ledger-overdue{background:#fff0e8;color:#a34d2e}.ledger-unknown{background:#edf1ef;color:var(--muted)}
.calculator-history{margin-top:20px;border-top:1px solid #334247;padding-top:17px}.calc-history-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.calc-history-head h3{margin:4px 0 0;font-size:15px;color:#e9f0ec}.calc-history-head button{border:1px solid #46565a;background:transparent;color:#b9c5c0;padding:6px 8px;font-size:8px;cursor:pointer;margin-left:4px}.calc-history-head button.saved{border-color:var(--orange);color:#ffae82}.calc-history-list{display:grid;gap:7px;margin-top:12px;max-height:270px;overflow:auto}.calc-history-empty{border:1px dashed #435357;padding:14px;color:#82918d;font-size:8px;line-height:1.6}.calc-history-row{display:grid;grid-template-columns:1fr auto;gap:8px;border:1px solid #35464a;background:#142227;padding:10px}.calc-history-main b{font-size:9px;color:#e6efeb}.calc-history-main small{display:block;color:#7d8c88;font-size:7px;margin-top:3px}.calc-history-main strong{display:block;color:var(--mint);font:16px Georgia;margin-top:8px}.calc-history-main p{color:#8d9b97;font:8px ui-monospace,SFMono-Regular,monospace;margin:6px 0 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.calc-history-actions{display:flex;flex-direction:column;gap:5px}.calc-history-actions button{border:1px solid #46565a;background:transparent;color:#b9c5c0;padding:4px 6px;font-size:7px;cursor:pointer}.calc-star,.calc-favorite-mark{color:var(--orange);font-style:normal}.calc-history-main .calc-star{margin-left:5px;font-size:10px}.calculator-card{position:relative}.calc-favorite-mark{position:absolute;right:9px;top:8px;font-size:11px}.ledger-entry{background:linear-gradient(135deg,#edf7f0,#f7f1e9)}.ledger-entry .hot-label{color:#317154}.light-off .ledger-entry{background:#172429}.light-off .ledger-summary{background:#081116}.light-off .ledger-row{background:#172428}.light-off .ledger-due.ledger-unknown{background:#203035}.light-off .calculator-history{border-color:#334247}.light-off .calc-history-row{background:#101b1f}
@media(max-width:1100px){.ledger-layout{grid-template-columns:1fr}.ledger-summary{min-height:0}.calculator-history{position:static}}
@media(max-width:700px){.instrument-ledger{margin:0 16px 78px;padding:18px}.ledger-row{grid-template-columns:1fr}.ledger-row>button{justify-self:end}.ledger-due{justify-self:start}.calc-history-head{align-items:flex-start;flex-direction:column}.calc-history-head>div:last-child{width:100%;display:flex}.calc-history-head button{flex:1;margin:0 4px 0 0}.calc-history-row{grid-template-columns:1fr}.calc-history-actions{flex-direction:row}.calc-history-actions button{flex:1}.calc-history-main p{white-space:normal}}

/* University freshman learning camp */
.freshman-head{background:linear-gradient(135deg,#edf4ef,#fff4e9)}.freshman-overall{display:flex;align-items:center;gap:12px;border-left:3px solid var(--orange);padding:10px 16px}.freshman-overall b{font:34px Georgia;color:var(--orange-deep)}.freshman-overall span{font-size:8px;line-height:1.6;color:var(--muted)}.freshman-guide{margin:0 clamp(34px,5vw,78px) 22px;display:grid;grid-template-columns:1.2fr 1fr;gap:20px;border:1px solid var(--line);background:var(--ink);color:white;padding:22px}.freshman-guide>div>span,.freshman-class-head span,.freshman-field-example span,.freshman-formula span,.freshman-quiz-head span{font-size:7px;letter-spacing:1.3px;color:var(--orange);text-transform:uppercase}.freshman-guide h2,.freshman-guide b{display:block;font-size:17px;margin:5px 0}.freshman-guide p{font-size:8px;line-height:1.7;color:#9aaba6;margin:0}.freshman-guide ol{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;list-style:none;margin:0;padding:0}.freshman-guide li{border:1px solid #3c4d51;padding:10px}.freshman-guide li i{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--orange);color:#111;font-style:normal;font-size:8px}.freshman-guide li span,.freshman-guide li small{display:block}.freshman-guide li span{font-size:8px;font-weight:700;margin-top:8px}.freshman-guide li small{font-size:7px;color:#879894;margin-top:3px}.freshman-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:22px;margin:0 clamp(34px,5vw,78px) 42px}.freshman-course-list{display:grid;gap:10px}.freshman-card{display:grid;grid-template-columns:54px minmax(0,1fr) 100px;gap:16px;align-items:center;border:1px solid var(--line);background:var(--surface);padding:18px;transition:.2s}.freshman-card:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(19,36,40,.08)}.freshman-card.done{border-left:3px solid #4f9b72}.freshman-number{width:45px;height:45px;display:grid;place-items:center;border:1px solid var(--line);font:18px Georgia;color:var(--orange-deep)}.freshman-card small{font-size:7px;letter-spacing:1px;color:var(--muted)}.freshman-card h2{font-size:15px;margin:5px 0}.freshman-card p{font-size:8px;line-height:1.55;color:var(--muted);margin:0}.freshman-tags{display:flex;flex-wrap:wrap;gap:5px;margin-top:9px}.freshman-tags span{font-size:7px;background:#edf2ee;padding:4px 6px;color:#51635e}.freshman-card-action{text-align:right}.freshman-card-action b{display:block;font:16px Georgia;color:#3b805e;margin-bottom:6px}.freshman-card-action button,.freshman-roadmap button{border:0;background:transparent;color:var(--orange-deep);font-size:8px;font-weight:700;cursor:pointer}.freshman-roadmap{border:1px solid var(--line);background:var(--surface);padding:18px;align-self:start;position:sticky;top:18px}.freshman-roadmap h2{font-size:17px;margin:6px 0 12px}.freshman-roadmap>div:first-of-type{display:grid;gap:3px}.freshman-roadmap button{display:grid;grid-template-columns:25px 1fr;gap:7px;align-items:center;text-align:left;color:var(--muted);padding:6px}.freshman-roadmap button i{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:#e8eeea;font-style:normal;font-size:7px}.freshman-roadmap button.done{color:#347a5b}.freshman-roadmap button.done i{background:#347a5b;color:white}.freshman-source-note{border-top:1px solid var(--line);margin-top:14px;padding-top:14px}.freshman-source-note b{font-size:9px}.freshman-source-note p{font-size:7px;line-height:1.65;color:var(--muted)}.freshman-classroom{margin:0 clamp(34px,5vw,78px) 80px;border:1px solid var(--line);background:var(--surface);box-shadow:0 16px 40px rgba(13,27,31,.12)}.freshman-class-head{display:flex;justify-content:space-between;gap:20px;background:var(--ink);color:white;padding:22px 26px}.freshman-class-head h2{font-size:23px;margin:7px 0}.freshman-class-head p{font-size:8px;color:#9baba7;margin:0}.freshman-class-head button{border:1px solid #566669;background:transparent;color:white;width:34px;height:34px;cursor:pointer}.freshman-lesson-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:22px;padding:24px}.freshman-notes h3{font-size:16px;margin:0 0 12px}.freshman-notes ol{padding-left:18px}.freshman-notes li{font-size:9px;line-height:1.75;margin:5px 0}.freshman-field-example,.freshman-formula{margin-top:16px;padding:15px;border-left:3px solid var(--orange);background:#fff6ed}.freshman-field-example p{font-size:9px;line-height:1.7;margin:6px 0 0}.freshman-formula{background:#edf4ef;border-color:#4f9b72}.freshman-formula b{display:block;font:13px Georgia;line-height:1.6;margin-top:7px}.freshman-quiz{border-left:1px solid var(--line);padding-left:22px}.freshman-quiz-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.freshman-quiz-head b{font-size:8px}.freshman-quiz fieldset{border:1px solid var(--line);padding:14px;margin:0 0 10px}.freshman-quiz fieldset.correct{border-color:#4f9b72;background:#f0f8f3}.freshman-quiz fieldset.wrong{border-color:#c86d4a;background:#fff4ee}.freshman-quiz legend{font-size:9px;font-weight:700;line-height:1.55;padding:0 5px}.freshman-quiz legend i{font-style:normal;font-size:7px;color:white;background:var(--orange-deep);padding:3px 5px;margin-right:6px}.freshman-options{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-top:10px}.freshman-options button{border:1px solid var(--line);background:white;text-align:left;padding:9px;font-size:8px;cursor:pointer}.freshman-options button.selected{border-color:var(--orange);background:#fff1e7}.freshman-calc-answer{display:flex;align-items:center;margin-top:10px}.freshman-calc-answer input{height:40px;flex:1;border:1px solid var(--line);padding:0 10px;font-size:10px}.freshman-calc-answer span{height:40px;display:grid;place-items:center;background:var(--ink);color:white;padding:0 12px;font-size:8px}.freshman-explain{font-size:8px;line-height:1.65;margin:10px 0 0;color:var(--muted)}.freshman-submit{width:100%;height:44px;border:0;background:var(--orange);font-size:9px;font-weight:800;cursor:pointer}.freshman-score{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;background:var(--ink);color:white;padding:15px;margin-top:10px}.freshman-score b{font:24px Georgia;color:var(--orange)}.freshman-score span{font-size:8px;color:#a7b4b0}.freshman-score button{border:1px solid #526368;background:transparent;color:white;padding:8px 10px;font-size:8px;cursor:pointer}.light-off .freshman-head,.light-off .freshman-card,.light-off .freshman-roadmap,.light-off .freshman-classroom{background:#152327}.light-off .freshman-tags span,.light-off .freshman-roadmap button i,.light-off .freshman-formula{background:#213237}.light-off .freshman-field-example{background:#37261f}.light-off .freshman-options button{background:#17262a;color:#e9f0ed}.light-off .freshman-quiz fieldset.correct{background:#173126}.light-off .freshman-quiz fieldset.wrong{background:#38231e}
@media(max-width:1000px){.freshman-layout{grid-template-columns:1fr}.freshman-roadmap{position:static}.freshman-lesson-grid{grid-template-columns:1fr}.freshman-quiz{border-left:0;border-top:1px solid var(--line);padding:20px 0 0}}
@media(max-width:700px){.freshman-guide{margin:0 16px 18px;grid-template-columns:1fr}.freshman-guide ol{grid-template-columns:1fr}.freshman-layout{margin:0 16px 28px}.freshman-card{grid-template-columns:42px 1fr;padding:14px}.freshman-card-action{grid-column:2;text-align:left;display:flex;gap:10px;align-items:center}.freshman-card-action b{margin:0}.freshman-classroom{margin:0 16px 80px}.freshman-class-head,.freshman-lesson-grid{padding:18px}.freshman-class-head h2{font-size:18px}.freshman-options{grid-template-columns:1fr}.freshman-score{grid-template-columns:1fr}.freshman-head .freshman-overall{margin-top:12px}}
.freshman-reading{padding:26px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fbfdfb,#f1f5f1)}.freshman-reading-intro{max-width:720px}.freshman-reading-intro>span{font-size:7px;letter-spacing:1.4px;color:var(--orange-deep)}.freshman-reading-intro h3{font-size:22px;margin:7px 0}.freshman-reading-intro p{font-size:9px;color:var(--muted);line-height:1.7;margin:0}.freshman-chapters{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px}.freshman-chapters section{display:grid;grid-template-columns:34px 1fr;gap:12px;border:1px solid var(--line);background:var(--surface);padding:18px}.freshman-chapters section>i{width:30px;height:30px;display:grid;place-items:center;border:1px solid var(--orange);color:var(--orange-deep);font:10px Georgia;font-style:normal}.freshman-chapters h3{font-size:13px;margin:1px 0 7px}.freshman-chapters p{font-size:9px;line-height:1.9;color:#455650;margin:0}.freshman-reading-summary{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}.freshman-reading-summary>div,.freshman-check{padding:16px;border-left:3px solid var(--orange);background:#fff5ec}.freshman-reading-summary>div:last-child{border-color:#4f9b72;background:#eaf3ed}.freshman-reading-summary span,.freshman-check span{display:block;font-size:7px;letter-spacing:1px;color:var(--orange-deep);text-transform:uppercase}.freshman-reading-summary p,.freshman-check p{font-size:9px;line-height:1.75;margin:6px 0 0}.freshman-reading-summary b{display:block;font:12px Georgia;line-height:1.7;margin-top:7px}.freshman-check{margin-top:16px;background:#eef4ef;border-color:#4f9b72}.light-off .freshman-reading{background:#101c20}.light-off .freshman-chapters section{background:#17262a}.light-off .freshman-chapters p{color:#b5c1bd}.light-off .freshman-reading-summary>div{background:#37261f}.light-off .freshman-reading-summary>div:last-child,.light-off .freshman-check{background:#193126}
@media(max-width:700px){.freshman-reading{padding:18px}.freshman-chapters,.freshman-reading-summary{grid-template-columns:1fr}.freshman-chapters section{grid-template-columns:28px 1fr;padding:14px}}
.freshman-visual-lab{padding:26px;background:#0d1b1f;color:#eef4f1;border-bottom:1px solid #35464a}.freshman-visual-head{display:grid;grid-template-columns:.8fr 1.2fr;gap:22px;align-items:end}.freshman-visual-head span,.freshman-do>span{font-size:7px;letter-spacing:1.4px;color:var(--orange)}.freshman-visual-head h3{font-size:20px;margin:7px 0 0}.freshman-visual-head p{font-size:10px;line-height:1.8;color:#c0cbc7;margin:0;border-left:3px solid var(--orange);padding-left:14px}.freshman-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin-top:22px}.freshman-flow button{position:relative;min-height:74px;border:1px solid #425357;background:#14262b;color:#c8d2cf;text-align:left;padding:12px;cursor:pointer}.freshman-flow button>i,.freshman-flow button>b{display:block}.freshman-flow button>i{font:9px Georgia;color:#788a85;font-style:normal}.freshman-flow button>b{font-size:10px;margin-top:10px}.freshman-flow button>span{position:absolute;right:-8px;top:28px;z-index:2;width:16px;height:16px;display:grid;place-items:center;border-radius:50%;background:var(--orange);color:#111;font-size:8px}.freshman-flow button.active{border-color:var(--orange);background:#28362f;color:white}.freshman-flow-detail{display:flex;gap:12px;align-items:center;min-height:45px;background:#edf4ef;color:#182823;padding:10px 14px}.freshman-flow-detail b{font-size:9px;white-space:nowrap;color:var(--orange-deep)}.freshman-flow-detail span{font-size:8px;line-height:1.6}.freshman-do{display:grid;grid-template-columns:100px 1fr;gap:12px;align-items:center;margin-top:14px}.freshman-do ol{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;list-style:none;margin:0;padding:0}.freshman-do li{display:flex;gap:7px;align-items:center;border:1px solid #3c4d51;padding:9px;font-size:8px;color:#bac6c2}.freshman-do li i{width:20px;height:20px;flex:0 0 auto;border-radius:50%;display:grid;place-items:center;background:var(--orange);color:#111;font-style:normal;font-size:7px}.light-off .freshman-flow-detail{background:#1c3328;color:#e9f1ed}
@media(max-width:700px){.freshman-visual-lab{padding:18px}.freshman-visual-head{grid-template-columns:1fr}.freshman-flow{grid-template-columns:1fr 1fr}.freshman-flow button>span{display:none}.freshman-do{grid-template-columns:1fr}.freshman-do ol{grid-template-columns:1fr}.freshman-flow-detail{align-items:flex-start;flex-direction:column;gap:4px}}
.book-focus{margin:0 clamp(34px,5vw,78px) 26px;border:1px solid var(--line);background:var(--surface);padding:22px}.book-focus-head{display:flex;justify-content:space-between;gap:22px}.book-focus-head h2{font-size:21px;margin:6px 0}.book-focus-head p{max-width:700px;font-size:8px;line-height:1.7;color:var(--muted);margin:0}.book-focus-head>div:last-child{display:flex;align-items:center;gap:10px;border-left:3px solid var(--orange);padding-left:14px}.book-focus-head>div:last-child b{font:30px Georgia;color:var(--orange-deep)}.book-focus-head>div:last-child span{font-size:7px;line-height:1.6;color:var(--muted)}.book-focus-tabs{display:flex;flex-wrap:wrap;gap:6px;margin:18px 0 12px}.book-focus-tabs button{border:1px solid var(--line);background:transparent;padding:8px 11px;color:var(--muted);font-size:8px;cursor:pointer}.book-focus-tabs button.active{border-color:var(--orange);background:var(--orange);color:#111}.book-focus-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.book-focus-grid>button{min-width:0;border:1px solid var(--line);background:#f4f7f3;text-align:left;color:var(--ink);padding:14px;cursor:pointer}.book-focus-grid>button:hover{border-color:var(--orange);background:#fff7ef}.book-focus-grid span,.book-focus-grid b,.book-focus-grid small,.book-focus-grid i{display:block}.book-focus-grid span{font-size:7px;letter-spacing:.6px;color:var(--orange-deep)}.book-focus-grid b{font-size:11px;margin:6px 0}.book-focus-grid small{font-size:7px;color:#587069}.book-focus-grid p{font-size:8px;line-height:1.65;color:var(--muted);margin:9px 0}.book-focus-grid i{font-size:7px;font-style:normal;color:var(--orange-deep)}.book-focus-detail{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px;margin-top:14px;background:var(--ink);color:white;padding:22px}.book-focus-detail span{font-size:7px;letter-spacing:1px;color:var(--orange)}.book-focus-detail h3{font-size:19px;margin:8px 0}.book-focus-detail p,.book-focus-detail li{font-size:8px;line-height:1.8;color:#b7c4bf}.book-focus-detail section>b{font-size:9px}.book-focus-detail ol{margin:8px 0 12px;padding-left:18px}.book-focus-detail button{border:1px solid #586a6d;background:transparent;color:white;padding:9px 11px;font-size:8px;cursor:pointer}.freshman-book-ref{display:inline-block;margin-top:9px;padding:5px 8px;background:#25373c;color:#f3ad81;font-size:7px;line-height:1.5}.light-off .book-focus{background:#152327}.light-off .book-focus-grid>button{background:#1a292d;color:#edf3f0}.light-off .book-focus-grid>button:hover{background:#37261f}
@media(max-width:1000px){.book-focus-grid{grid-template-columns:1fr 1fr}}
@media(max-width:700px){.book-focus{margin:0 16px 22px;padding:16px}.book-focus-head{display:block}.book-focus-head>div:last-child{margin-top:12px}.book-focus-grid,.book-focus-detail{grid-template-columns:1fr}.book-focus-grid>button p{display:none}.book-focus-tabs button{flex:1}.book-focus-detail{padding:18px}}
.book-focus-detail{display:block}.book-detail-title{max-width:820px}.book-detail-title h3{font-size:22px}.book-detail-title p{font-size:9px;line-height:1.85}.book-detail-map{display:grid;grid-template-columns:1.15fr .85fr;gap:14px;margin-top:20px}.book-detail-map>div{border:1px solid #45575b;background:#14252a;padding:16px}.book-detail-map>div>b,.book-detail-learning h4{font-size:11px}.book-detail-map ol{display:grid;grid-template-columns:1fr 1fr;gap:6px 18px;margin:11px 0 0;padding-left:18px}.book-detail-map>div:last-child ol{display:block}.book-detail-map li{font-size:8px;line-height:1.65;color:#b8c5c0;margin-bottom:5px}.book-detail-learning{margin-top:18px;border-top:1px solid #405156;padding-top:18px}.book-detail-learning>div:first-child>span{font-size:7px;color:var(--orange);letter-spacing:1px}.book-detail-learning h4{font-size:18px;margin:6px 0}.book-detail-learning>div:first-child>p{max-width:760px;font-size:8px;line-height:1.75;color:#aebcb7}.book-detail-chapters{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:12px}.book-detail-chapters article{display:grid;grid-template-columns:30px 1fr;gap:10px;border:1px solid #45575b;background:#132328;padding:14px}.book-detail-chapters article>i{width:26px;height:26px;display:grid;place-items:center;border:1px solid var(--orange);font:8px Georgia;color:var(--orange);font-style:normal}.book-detail-chapters article b{font-size:9px;color:#f3f7f5}.book-detail-chapters article p{font-size:8px;line-height:1.75;color:#aebcb7;margin:6px 0 0}.book-detail-application{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:9px}.book-detail-application>div{border-left:3px solid var(--orange);background:#253238;padding:14px}.book-detail-application>div:last-child{border-color:#74b590}.book-detail-application span{font-size:7px;color:var(--orange)}.book-detail-application p,.book-detail-application b{display:block;font-size:8px;line-height:1.7;color:#d4ddda;margin:6px 0 0}.book-detail-action{margin-top:14px}.book-detail-action button{width:100%;height:42px;border:0;background:var(--orange);color:#111;font-size:9px;font-weight:700;cursor:pointer}
@media(max-width:700px){.book-detail-map,.book-detail-chapters,.book-detail-application{grid-template-columns:1fr}.book-detail-map ol{grid-template-columns:1fr}.book-detail-title h3{font-size:18px}}
.book-point-library{margin-top:24px;border-top:1px solid var(--line);padding-top:22px}.book-point-head{display:flex;justify-content:space-between;align-items:end;gap:16px}.book-point-head h3{font-size:19px;margin:6px 0}.book-point-head p{font-size:8px;line-height:1.65;color:var(--muted);margin:0}.book-point-head>b{font:34px Georgia;color:var(--orange-deep)}.book-point-tools{display:grid;grid-template-columns:1fr 220px;gap:8px;margin-top:16px}.book-point-tools label{display:flex;align-items:center;border:1px solid var(--line);background:#f4f7f3}.book-point-tools label>span{padding-left:12px;color:var(--muted)}.book-point-tools input,.book-point-tools select{width:100%;height:42px;border:0;background:transparent;color:var(--ink);padding:0 10px;font-size:8px}.book-point-tools select{border:1px solid var(--line);background:#f4f7f3}.book-point-result{display:flex;align-items:center;justify-content:space-between;margin:10px 0}.book-point-result span{font-size:8px;color:var(--muted)}.book-point-result button{border:0;background:transparent;color:var(--orange-deep);font-size:8px;cursor:pointer}.book-point-list{display:grid;grid-template-columns:1fr 1fr;gap:6px}.book-point-list>button{display:grid;grid-template-columns:1fr auto;gap:5px 12px;border:1px solid var(--line);background:#f4f7f3;text-align:left;color:var(--ink);padding:11px 13px;cursor:pointer}.book-point-list>button:hover{border-color:var(--orange);background:#fff7ef}.book-point-list span{grid-column:1/-1;font-size:7px;color:var(--muted)}.book-point-list b{font-size:9px}.book-point-list small{font-size:7px;color:var(--orange-deep)}.book-point-empty{grid-column:1/-1;border:1px dashed var(--line);padding:20px;text-align:center;font-size:8px;color:var(--muted)}.book-point-more{width:100%;height:38px;border:1px solid var(--line);background:transparent;color:var(--muted);font-size:8px;cursor:pointer;margin-top:8px}.book-point-detail{margin-top:10px;border-left:3px solid var(--orange);background:#0f1d21;color:white;padding:20px}.book-point-detail>span{font-size:7px;letter-spacing:1px;color:var(--orange)}.book-point-detail h4{font-size:18px;margin:7px 0}.book-point-detail>p{max-width:850px;font-size:9px;line-height:1.85;color:#d1d9d6}.book-point-detail>div{border-top:1px solid #3b4d51;padding-top:13px;margin-top:13px}.book-point-detail>div>b{font-size:9px}.book-point-detail>div p,.book-point-detail li{font-size:8px;line-height:1.75;color:#adbbb6}.book-point-detail footer{display:flex;gap:7px;margin-top:14px}.book-point-detail footer button{border:1px solid #53666a;background:transparent;color:white;padding:9px 11px;font-size:8px;cursor:pointer}.book-point-detail footer button:last-child{border-color:var(--orange);background:var(--orange);color:#111}.light-off .book-point-tools label,.light-off .book-point-tools select,.light-off .book-point-list>button{background:#19282c;color:#edf3f0}.light-off .book-point-list>button:hover{background:#37261f}
@media(max-width:700px){.book-point-tools,.book-point-list{grid-template-columns:1fr}.book-point-head{align-items:flex-start}.book-point-detail footer{flex-direction:column}.book-point-detail footer button{width:100%}}
.learning-hub-switch{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:22px clamp(34px,5vw,78px) 14px}.learning-hub-switch button{display:grid;grid-template-columns:38px 1fr;gap:10px;align-items:center;border:1px solid var(--line);background:var(--surface);color:var(--ink);text-align:left;padding:11px 14px;cursor:pointer}.learning-hub-switch button>i{width:34px;height:34px;display:grid;place-items:center;border:1px solid var(--line);font:11px Georgia;color:var(--muted);font-style:normal}.learning-hub-switch button span,.learning-hub-switch button b,.learning-hub-switch button small{display:block}.learning-hub-switch button b{font-size:10px}.learning-hub-switch button small{font-size:7px;color:var(--muted);margin-top:3px}.learning-hub-switch button.active{border-color:var(--orange);background:#fff5eb}.learning-hub-switch button.active>i{border-color:var(--orange);background:var(--orange);color:#111}.light-off .learning-hub-switch button{background:#142327;color:#eaf1ee}.light-off .learning-hub-switch button.active{background:#37261f}
@media(max-width:700px){.learning-hub-switch{margin:14px 16px 10px;gap:5px}.learning-hub-switch button{grid-template-columns:28px 1fr;padding:9px}.learning-hub-switch button>i{width:25px;height:25px}.learning-hub-switch button small{display:none}}

/* 475 authentic UI profile — based on Emerson 475 icon UI and Device Dashboard */
.fc475-device{background:linear-gradient(90deg,#0877ad 0 6%,#159bd2 7% 11%,#26343b 12% 88%,#159bd2 89% 93%,#0877ad 94%);border-radius:45px 45px 66px 66px}.fc475-screen-bezel{padding:8px;border-color:#0a1013;background:#070b0d;box-shadow:inset 0 0 0 2px #586066,0 3px 9px #05090a}.fc475-screen{height:250px;background:#f5f5f2;border-color:#6e7778}.fc475-ui{position:relative;grid-template-rows:23px 1fr 27px;background:#f5f5f2}.fc475-statusbar{position:absolute;right:0;top:0;z-index:3;width:58px;height:23px;padding:0 6px;background:transparent;color:white;font-size:6px;justify-content:flex-end}.fc475-statusbar span:first-child{color:white}.fc475-statusbar span:last-child{display:none}.fc475-title{grid-row:1;padding:0 62px 0 7px;color:white;background:linear-gradient(#4143ae,#272b91);border-bottom:1px solid #17195e;font-family:Tahoma,Arial,"Microsoft YaHei",sans-serif;font-size:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.fc475-content{grid-row:2;padding:5px;background:#f7f7f4}.fc475-softkeys{grid-row:3;background:#d5d7d6;border-top:1px solid #9a9f9f;gap:3px;padding:2px 3px}.fc475-softkeys button{border:1px solid #a9adad;background:linear-gradient(#fafafa,#dedfdf);color:#252727;font-family:Tahoma,Arial,"Microsoft YaHei",sans-serif;font-size:7px;box-shadow:none}.fc475-softkeys button:last-child{border-color:#32368f;background:linear-gradient(#6667bb,#3c3d99);color:white}.fc-menu-grid{grid-template-columns:repeat(3,1fr);gap:2px;align-content:start}.fc-menu-grid .fc-menu-item{min-height:78px;border:1px solid transparent;background:transparent;font-size:6.5px;padding:5px 2px;color:#222}.fc-menu-grid .fc-menu-item>i{width:34px;height:34px;border-radius:2px;background:linear-gradient(145deg,#f8faf9,#cbd7d8);border:1px solid #8e9b9e;color:#252d91;font-size:13px;box-shadow:0 1px 2px rgba(0,0,0,.25)}.fc-menu-grid .fc-menu-item.selected{border:1px dotted #32338d;background:#e8e8f5;color:#111}.fc-menu-grid .fc-menu-item.selected>i{color:#252d91}.fc-dashboard-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;height:100%;align-items:center}.fc-dashboard-grid .fc-menu-item{display:flex;flex-direction:column;justify-content:center;min-height:112px;border:1px solid #c3c5c5;background:linear-gradient(#fff,#e5e6e4);font-size:7px;text-align:center;padding:5px;color:#222}.fc-dashboard-grid .fc-menu-item>i{width:43px;height:43px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(#f8faf9,#c5d6da);border:1px solid #8b999c;color:#2e3299;font-size:18px;font-style:normal}.fc-dashboard-grid .fc-menu-item.selected{outline:2px solid #3537a0;outline-offset:-3px;background:#eef0ff;color:#111}.fc-menu-list{gap:1px}.fc-menu-item{font-family:Tahoma,Arial,"Microsoft YaHei",sans-serif}.fc-menu-list .fc-menu-item{min-height:28px;border:1px solid #d0d2d1;background:#fff;color:#222;font-size:7.5px}.fc-menu-list .fc-menu-item>i{color:#30339a}.fc-menu-list .fc-menu-item.selected{border-color:#282a87;background:linear-gradient(#5e62bb,#373a9a);color:white}.fc-menu-list .fc-menu-item.selected>i,.fc-menu-list .fc-menu-item.selected>span:last-child{color:white}.fc-detail-row{background:#fff;border:1px solid #d2d4d3;padding:6px;font-size:7.5px}.fc-detail-row b{color:#303030}.fc-message{background:#fff;border:1px solid #d1d3d2}.fc-message>i{color:#30349c}.fc-progress i{background:#3e42a3}.fc475-boot{background:linear-gradient(145deg,#26328d,#287da1 55%,#cfdcaf)}.fc475-boot:before{content:"EMERSON";font-size:7px;letter-spacing:2px;margin-bottom:13px}.fc475-brandline{height:36px;padding:5px 7px 0}.fc475-emerson{color:#e6412b;font:bold italic 15px Georgia,serif;letter-spacing:-1px}.fc475-hart{color:#f0583e!important;font:bold 8px Arial!important;line-height:.9!important;text-align:center!important}.fc475-controls{margin-top:0}.fc475-controls button{background:linear-gradient(#3188c4,#176292);border-color:#4aa7d8;color:white}.fc475-sidekeys button,.fc475-functionkeys button{height:34px;border-radius:3px}.fc475-sidekeys .fc-power{color:white}.fc475-dpad{background:#102632;border-color:#1e78aa;padding:3px}.fc475-dpad button{background:linear-gradient(#3898d0,#1a6b9d);border-color:#4aa5d5}.fc475-dpad .fc-enter{background:linear-gradient(#2b82b8,#145781);font-size:0}.fc475-dpad .fc-enter:after{content:"↵";font-size:18px;color:white}.fc475-functionkeys button{font-size:7px}.fc475-keypad{padding-top:2px}.fc475-keypad button{background:linear-gradient(#34434a,#1b272c)}.fc475-model{display:flex;align-items:baseline;gap:4px;margin:12px 11px -4px;color:#dbe6e9}.fc475-model b{font:22px Arial}.fc475-model span{font-size:6px;letter-spacing:.4px}.fc475-bottom{margin-top:10px}.light-off .fc475-content{background:#f7f7f4}.light-off .fc-menu-list .fc-menu-item,.light-off .fc-detail-row,.light-off .fc-message{color:#222}
/* 475 simulated device library */
.sim-device-library{border:1px solid var(--line);background:var(--surface);padding:18px}.sim-device-library h2{font-size:17px;margin:6px 0}.sim-device-library>p{font-size:8px;color:var(--muted);line-height:1.6;margin:0 0 11px}.sim-device-card{width:100%;display:grid;grid-template-columns:42px 1fr auto;gap:8px;align-items:center;border:1px solid var(--line);background:transparent;text-align:left;padding:9px 8px;margin-top:6px;color:var(--ink);cursor:pointer}.sim-device-card:hover,.sim-device-card.active{border-color:var(--orange);background:#fff7ef}.sim-device-card>span{width:35px;height:35px;display:grid;place-items:center;border:1px solid #98aaa4;background:#edf3ef;color:var(--orange-deep);font:10px Georgia}.sim-device-card b,.sim-device-card small,.sim-device-card i{display:block}.sim-device-card b{font-size:8px}.sim-device-card small{font-size:7px;color:var(--muted);margin-top:3px}.sim-device-card i{font-size:7px;color:var(--muted);font-style:normal}.sim-device-card.active i{color:#347a5b}.light-off .sim-device-card:hover,.light-off .sim-device-card.active{background:#37261f}
.sim-fault-panel{border:1px solid var(--line);background:var(--surface);padding:18px}.sim-fault-panel h2{font-size:17px;margin:6px 0}.sim-fault-panel>p{font-size:8px;color:var(--muted);line-height:1.6;margin:0 0 10px}.sim-fault-card{width:100%;display:grid;grid-template-columns:30px 1fr;gap:8px;align-items:center;border:1px solid var(--line);background:transparent;text-align:left;padding:8px;margin-top:6px;color:var(--ink);cursor:pointer}.sim-fault-card>i{width:25px;height:25px;display:grid;place-items:center;border-radius:50%;background:#e8efea;color:#4e625b;font-style:normal;font-size:10px}.sim-fault-card span,.sim-fault-card b,.sim-fault-card small{display:block}.sim-fault-card b{font-size:8px}.sim-fault-card small{font-size:7px;color:var(--muted);line-height:1.45;margin-top:2px}.sim-fault-card:hover,.sim-fault-card.active{border-color:var(--orange);background:#fff7ef}.sim-fault-card.active>i{background:var(--orange);color:#111}.sim-scenario{margin-top:10px;border-left:3px solid var(--orange);background:#0d1c20;color:white;padding:10px}.sim-scenario b,.sim-scenario span{display:block}.sim-scenario b{font-size:8px}.sim-scenario span{font-size:7px;line-height:1.55;color:#9fb0ab;margin-top:4px}.sim-task-progress{display:flex;align-items:center;gap:9px;margin:8px 0 10px}.sim-task-progress>span{font:10px Georgia;color:var(--orange-deep)}.sim-task-progress>i{height:5px;flex:1;background:#dfe7e1;overflow:hidden}.sim-task-progress>i>b{display:block;height:100%;width:0;background:var(--orange);transition:width .25s}.light-off .sim-fault-panel{background:#101b1f}.light-off .sim-fault-card:hover,.light-off .sim-fault-card.active{background:#37261f}.light-off .sim-task-progress>i{background:#29383b}

/* Guided field diagnosis workbench */
.field-section-nav{
  position:sticky;
  top:0;
  z-index:16;
  display:flex;
  align-items:center;
  gap:6px;
  margin:0 clamp(34px,5vw,78px) 18px;
  padding:8px;
  overflow-x:auto;
  overscroll-behavior-inline:contain;
  scrollbar-width:none;
  border:1px solid var(--line);
  background:rgba(247,248,243,.94);
  box-shadow:0 10px 26px rgba(13,27,31,.08);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.field-section-nav::-webkit-scrollbar{display:none}
.field-section-nav a,.field-section-nav button{
  min-height:42px;
  flex:1 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:7px;
  border:1px solid transparent;
  background:transparent;
  color:var(--muted);
  padding:0 14px;
  font-size:10px;
  font-weight:750;
  text-decoration:none;
  white-space:nowrap;
  cursor:pointer;
}
.field-section-nav a:hover,.field-section-nav button:hover{border-color:#b9c6bf;color:var(--ink);background:#eef3ee}
.field-section-nav .active,.field-section-nav [aria-current="true"]{border-color:var(--orange);background:var(--ink);color:#fff}
.field-section-nav .active:before,.field-section-nav [aria-current="true"]:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange)}

.field-guide-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0 0 20px}
.field-guide-step{min-width:0;display:grid;grid-template-columns:38px minmax(0,1fr);align-items:center;gap:11px;min-height:76px;padding:13px 14px;border:1px solid var(--line);background:#f3f6f2;color:var(--muted)}
.field-guide-step.active,.field-guide-step[aria-current="step"]{border-color:var(--orange);background:#fff5ed;color:var(--ink);box-shadow:inset 3px 0 var(--orange)}
.field-guide-step.done{border-color:#88ae9a;color:#315e49;background:#edf6f0}
.field-guide-step b,.field-guide-step span,.field-guide-step small{display:block}
.field-guide-step b{font-size:11px;color:var(--ink)}
.field-guide-step small{margin-top:4px;font-size:8px;line-height:1.45;color:inherit}

.field-step-block{min-width:0;margin:0 0 16px;padding:20px;border:1px solid var(--line);background:var(--surface)}
.field-step-block>legend,.field-step-block legend{padding:0 9px;color:var(--ink);font-size:13px;font-weight:800}
.step-number{width:32px;height:32px;flex:0 0 32px;display:inline-grid;place-items:center;margin-right:8px;border:1px solid var(--orange);border-radius:50%;background:var(--orange);color:#16100d;font:700 11px Georgia,serif;vertical-align:middle}

.field-quick-symptoms{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 2px}
.field-quick-symptoms button,.field-quick-symptoms label{min-height:40px;display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:#f3f6f2;color:#43544f;padding:8px 12px;font-size:10px;font-weight:700;cursor:pointer}
.field-quick-symptoms button:hover,.field-quick-symptoms button.active,.field-quick-symptoms label:has(input:checked){border-color:var(--orange);background:#fff1e7;color:#8d3b19}
.field-quick-symptoms input{accent-color:var(--orange)}

.field-evidence-dynamic{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:14px;padding:16px;border:1px dashed #9daca5;background:#edf3ee}
.field-evidence-dynamic:empty{display:none}
.field-evidence-dynamic>p,.field-evidence-dynamic>.field-empty{grid-column:1/-1;margin:0;color:var(--muted);font-size:10px;line-height:1.65}

.field-safety-gate{position:relative;margin:14px 0;padding:17px 18px 17px 54px;border:1px solid #e2aa8f;border-left:4px solid var(--orange);background:linear-gradient(100deg,#fff0e7,#fff8f2);color:#562b1b}
.field-safety-gate:before{content:"!";position:absolute;left:16px;top:17px;width:24px;height:24px;display:grid;place-items:center;border-radius:50%;background:var(--orange);color:#1d120e;font-weight:900}
.field-safety-gate h3,.field-safety-gate h4{margin:0 0 7px;font-size:13px;color:#6d2e16}
.field-safety-gate p,.field-safety-gate li{font-size:10px;line-height:1.75}
.field-safety-gate p{margin:0}.field-safety-gate ul{margin:7px 0 0;padding-left:18px}
.field-safety-gate.safe{border-color:#87b59a;border-left-color:#4f9b72;background:#edf7f0;color:#285740}
.field-safety-gate.safe:before{content:"✓";background:#4f9b72;color:#fff}

.field-progress{display:grid;grid-template-columns:1fr auto;gap:8px 12px;align-items:center;margin:14px 0}
.field-progress>span,.field-progress>label{font-size:9px;font-weight:750;color:var(--muted)}
.field-progress>b,.field-progress>strong{font:15px Georgia,serif;color:var(--orange-deep)}
.field-progress-bar{grid-column:1/-1;height:7px;overflow:hidden;background:#dbe3dd;border-radius:99px}
.field-progress-bar>i,.field-progress-bar>span,.field-progress-bar>b{display:block;height:100%;width:0;max-width:100%;background:linear-gradient(90deg,var(--orange),#ff9c6e);border-radius:inherit;transition:width .35s ease}

.field-facts-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:14px 0}
.field-facts-grid>article,.field-facts-grid>div{min-width:0;padding:14px;border:1px solid var(--line);background:var(--surface)}
.field-facts-grid span,.field-facts-grid small{display:block;font-size:8px;line-height:1.5;color:var(--muted)}
.field-facts-grid b,.field-facts-grid strong{display:block;margin-top:6px;font-size:12px;line-height:1.5;overflow-wrap:anywhere}
.field-facts-grid p{margin:7px 0 0;font-size:10px;line-height:1.7;color:var(--muted)}

.field-next-action{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px 18px;align-items:center;margin-top:14px;padding:17px 18px;border:1px solid #34464a;background:var(--ink);color:#edf4f0}
.field-next-action>span{font-size:8px;letter-spacing:1.2px;color:var(--orange);text-transform:uppercase}
.field-next-action h3,.field-next-action b{display:block;margin:4px 0;font-size:14px}
.field-next-action p{grid-column:1/-1;margin:0;color:#a8b7b2;font-size:10px;line-height:1.7}
.field-next-action button,.field-next-action a{grid-row:1/3;grid-column:2;min-height:44px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--orange);background:var(--orange);color:#15100d;padding:0 16px;font-size:10px;font-weight:800;text-decoration:none;cursor:pointer}

.field-step-list{display:grid;gap:9px;margin:14px 0;padding:0;list-style:none}
.diagnostic-step{position:relative;display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:11px;align-items:start;padding:14px;border:1px solid var(--line);background:var(--surface)}
.diagnostic-step:before{content:attr(data-step);width:30px;height:30px;display:grid;place-items:center;border:1px solid #9caaa5;border-radius:50%;color:var(--muted);font:10px Georgia,serif}
.diagnostic-step.active{border-color:var(--orange);box-shadow:inset 3px 0 var(--orange)}
.diagnostic-step.active:before{border-color:var(--orange);background:var(--orange);color:#17100d}
.diagnostic-step.done:before{content:"✓";border-color:#4f9b72;background:#4f9b72;color:#fff}
.diagnostic-step.danger{border-color:#d0714c;background:#fff2eb}
.diagnostic-step h4,.diagnostic-step b{margin:2px 0 5px;font-size:12px}
.diagnostic-step p,.diagnostic-step li{margin:0;font-size:10px;line-height:1.75;color:var(--muted)}
.diagnostic-step ul,.diagnostic-step ol{margin:7px 0 0;padding-left:18px}
.step-answer{grid-column:2/-1;margin-top:3px;padding:11px 12px;border-left:3px solid #4f9b72;background:#edf6f0;color:#315e49;font-size:10px;line-height:1.7}
.step-answer.warning{border-color:var(--orange);background:#fff3eb;color:#70361e}

.field-result-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.field-result-actions button,.field-result-actions a{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:var(--surface);color:var(--ink);padding:0 15px;font-size:10px;font-weight:750;text-decoration:none;cursor:pointer}
.field-result-actions .primary,.field-result-actions button:first-child{border-color:var(--orange);background:var(--orange);color:#17100d}

.field-history{margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.field-history>header{display:flex;align-items:end;justify-content:space-between;gap:12px}
.field-history h3{margin:4px 0 0;font-size:15px}.field-history>header p{margin:0;color:var(--muted);font-size:9px}
.field-history-list{display:grid;gap:8px;margin-top:12px}
.field-history-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 16px;align-items:center;padding:12px 14px;border:1px solid var(--line);background:#f3f6f2}
.field-history-item b,.field-history-item span,.field-history-item small{display:block}
.field-history-item b{font-size:11px}.field-history-item small{margin-top:4px;font-size:8px;line-height:1.55;color:var(--muted)}
.field-history-item>span{font-size:8px;color:var(--orange-deep);white-space:nowrap}
.field-history-item button{min-height:34px;border:1px solid var(--line);background:transparent;padding:0 10px;font-size:8px;cursor:pointer}

.field-lock-message{display:flex;align-items:flex-start;gap:10px;margin:12px 0;padding:13px 14px;border:1px solid #c8d1cc;background:#e9efeb;color:#4f605a;font-size:10px;line-height:1.65}
.field-lock-message:before{content:"◇";flex:0 0 auto;color:var(--orange-deep);font:18px Georgia,serif;line-height:1}
.field-lock-message.danger{border-color:#df9a7d;background:#fff0e8;color:#78391f}
.field-section-nav :focus-visible,.field-quick-symptoms :focus-visible,.field-result-actions :focus-visible,.field-history :focus-visible,.field-next-action :focus-visible{outline:3px solid rgba(255,106,42,.32);outline-offset:2px}

.light-off .field-section-nav{border-color:#34464a;background:rgba(13,27,31,.94);box-shadow:0 12px 30px rgba(0,0,0,.28)}
.light-off .field-section-nav a:hover,.light-off .field-section-nav button:hover{border-color:#4d6165;background:#1b2b30;color:#edf4f0}
.light-off .field-guide-step,.light-off .field-step-block,.light-off .field-facts-grid>article,.light-off .field-facts-grid>div,.light-off .diagnostic-step,.light-off .field-result-actions button,.light-off .field-result-actions a{border-color:#36484c;background:#142328;color:#eaf1ed}
.light-off .field-guide-step.active,.light-off .field-guide-step[aria-current="step"],.light-off .field-quick-symptoms button.active,.light-off .field-quick-symptoms label:has(input:checked){border-color:var(--orange);background:#38251e;color:#f8e8df}
.light-off .field-guide-step.done,.light-off .step-answer{border-color:#4f8065;background:#193126;color:#bce1ca}
.light-off .field-guide-step b,.light-off .field-step-block>legend,.light-off .field-step-block legend,.light-off .field-facts-grid b,.light-off .field-facts-grid strong,.light-off .diagnostic-step h4,.light-off .diagnostic-step b{color:#edf4f0}
.light-off .field-quick-symptoms button,.light-off .field-quick-symptoms label,.light-off .field-history-item,.light-off .field-lock-message{border-color:#36484c;background:#17272b;color:#c7d2ce}
.light-off .field-evidence-dynamic{border-color:#4b5d61;background:#101d21}
.light-off .field-safety-gate{border-color:#8b533c;border-left-color:var(--orange);background:#38251e;color:#f2c7b4}
.light-off .field-safety-gate h3,.light-off .field-safety-gate h4{color:#ffb28e}
.light-off .field-safety-gate.safe{border-color:#3e7154;border-left-color:#69b184;background:#183026;color:#bee0ca}
.light-off .field-progress-bar{background:#293a3e}
.light-off .diagnostic-step.danger,.light-off .step-answer.warning,.light-off .field-lock-message.danger{border-color:#8b533c;background:#38251e;color:#f4c8b5}

@media(max-width:900px){
  .field-guide-steps{grid-template-columns:1fr}
  .field-guide-step{min-height:62px}
  .field-facts-grid{grid-template-columns:1fr}
}

@media(max-width:700px){
  .field-section-nav{top:0;margin:0 0 14px;padding:7px 16px;border-right:0;border-left:0;box-shadow:0 8px 22px rgba(13,27,31,.11)}
  .field-section-nav a,.field-section-nav button{min-height:44px;flex:0 0 auto;padding:0 14px;font-size:12px}
  #fieldView input,#fieldView select,#fieldView textarea,.field-form-grid input,.field-form-grid select,.field-form-grid textarea{min-height:48px;font-size:16px;line-height:1.5}
  #fieldView textarea,.field-form-grid textarea{min-height:112px}
  #fieldView button,#fieldView [role="button"],.field-step-block button,.field-result-actions button,.field-result-actions a,.field-next-action button,.field-next-action a{min-height:44px}
  .field-guide-steps{gap:7px;margin-bottom:14px}
  .field-guide-step{grid-template-columns:34px minmax(0,1fr);min-height:64px;padding:11px 12px}
  .field-step-block{padding:16px;margin-bottom:12px}
  .field-step-block>legend,.field-step-block legend{font-size:15px;line-height:1.45}
  .step-number{width:30px;height:30px;flex-basis:30px}
  .field-quick-symptoms{flex-wrap:nowrap;overflow-x:auto;margin-inline:-16px;padding:2px 16px 8px;scrollbar-width:none;overscroll-behavior-inline:contain}
  .field-quick-symptoms::-webkit-scrollbar{display:none}
  .field-quick-symptoms button,.field-quick-symptoms label{min-height:44px;flex:0 0 auto;font-size:13px}
  .field-evidence-dynamic{grid-template-columns:1fr;padding:14px}
  .field-safety-gate{order:-2;margin:10px 0;padding:16px 15px 16px 50px}
  .field-safety-gate:before{left:14px;top:16px}
  .field-safety-gate h3,.field-safety-gate h4{font-size:16px;line-height:1.4}
  .field-safety-gate p,.field-safety-gate li{font-size:14px;line-height:1.75}
  .field-result,.field-result-grid{display:grid;grid-template-columns:1fr}
  .field-result-grid>.field-safety-gate,.field-result-grid>.field-stop{order:-2;grid-column:1}
  .field-result p,.field-result li,.field-result dd,.field-result td,.field-result .field-checklist li,.field-result .field-causes li,.field-result .field-stop li,.field-facts-grid p,.diagnostic-step p,.diagnostic-step li,.step-answer,.field-next-action p,.field-lock-message{font-size:14px;line-height:1.75}
  .field-result h3{font-size:19px;line-height:1.35}.field-result h4{font-size:16px;line-height:1.4}
  .field-facts-grid{grid-template-columns:1fr;gap:8px}
  .field-facts-grid>article,.field-facts-grid>div{padding:14px}
  .field-facts-grid span,.field-facts-grid small{font-size:12px}.field-facts-grid b,.field-facts-grid strong{font-size:16px}
  .field-next-action{grid-template-columns:1fr;padding:16px}
  .field-next-action button,.field-next-action a{grid-row:auto;grid-column:1;width:100%;font-size:14px}
  .field-next-action>span{font-size:11px}.field-next-action h3,.field-next-action b{font-size:17px}
  .diagnostic-step{grid-template-columns:34px minmax(0,1fr);padding:14px 12px}
  .diagnostic-step>*{min-width:0}
  .diagnostic-step h4,.diagnostic-step b{font-size:16px;line-height:1.45}
  .step-answer{grid-column:1/-1;padding:12px}
  .field-result-actions{display:grid;grid-template-columns:1fr;gap:8px}
  .field-result-actions button,.field-result-actions a{width:100%;font-size:14px}
  .field-history>header{display:block}.field-history>header p{margin-top:6px;font-size:12px}
  .field-history-item{grid-template-columns:1fr;padding:13px}
  .field-history-item b{font-size:15px}.field-history-item small,.field-history-item>span{font-size:12px;line-height:1.6}
  .field-history-item button{min-height:44px;width:100%;font-size:13px}
  .field-lock-message{align-items:flex-start;padding:13px}
}

@media(prefers-reduced-motion:reduce){
  .field-progress-bar>i,.field-progress-bar>span,.field-progress-bar>b{transition:none}
}

/* Field assistant wizard aliases used by the live workbench markup */
.field-wizard-progress{margin:0 0 18px}
.field-wizard-progress>i{display:block;height:6px;overflow:hidden;border-radius:99px;background:#dbe3dd}
.field-wizard-progress>i>b{display:block;width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--orange),#ff9c6e);transition:width .35s ease}
.field-wizard-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:9px}
.field-wizard-steps button{min-width:0;min-height:62px;display:grid;grid-template-columns:31px minmax(0,1fr);grid-template-rows:auto auto;gap:2px 9px;align-items:center;border:1px solid var(--line);background:#f3f6f2;color:var(--muted);padding:10px;text-align:left;cursor:pointer}
.field-wizard-steps button>span{grid-row:1/-1;width:29px;height:29px;display:grid;place-items:center;border:1px solid #9caaa5;border-radius:50%;font:9px Georgia,serif}
.field-wizard-steps button>b{align-self:end;font-size:10px;color:var(--ink)}
.field-wizard-steps button>small{align-self:start;font-size:7px;color:var(--muted)}
.field-wizard-steps button.active,.field-wizard-steps button[aria-current="step"]{border-color:var(--orange);background:#fff5ed;box-shadow:inset 3px 0 var(--orange)}
.field-wizard-steps button.active>span,.field-wizard-steps button[aria-current="step"]>span{border-color:var(--orange);background:var(--orange);color:#17100d}
.field-wizard-steps button.done{border-color:#88ae9a;background:#edf6f0;color:#315e49}
.field-wizard-steps button.done>span{border-color:#4f9b72;background:#4f9b72;color:#fff}
.field-wizard-panel{min-width:0;margin:0 0 16px;padding:20px;border:1px solid var(--line);background:var(--surface)}
.field-wizard-panel>legend{padding:0 9px;color:var(--ink);font-size:13px;font-weight:800}
.field-wizard-panel>legend>span{display:inline-block;margin-right:8px;color:var(--orange-deep);font:9px Georgia,serif;letter-spacing:1px}
.field-step-intro{margin:0 0 16px;padding:11px 13px;border-left:3px solid var(--orange);background:#f1f5f1;color:#53645e;font-size:10px;line-height:1.7}
.field-step-actions{display:flex;align-items:center;justify-content:flex-end;gap:9px;margin-top:16px}
.field-step-actions button{min-height:44px}
.field-dynamic-evidence{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.field-dynamic-evidence:empty{display:none}
.field-dynamic-evidence label{min-width:0}
.field-quick-symptoms>span{display:inline-flex;align-items:center;padding-right:2px;color:var(--muted);font-size:9px;font-weight:800;white-space:nowrap}
.field-section-nav button>span{font:10px Georgia,serif;color:var(--orange-deep)}
.field-section-nav button.active>span{color:var(--orange)}
.field-history-card{min-width:0}
.field-history-head{display:flex;align-items:flex-end;justify-content:space-between;gap:10px}
.field-history-head h2{margin-bottom:0}
.field-history-head>button{width:auto;min-width:52px;height:34px;margin:0;border:1px solid var(--line);background:transparent;color:var(--muted);font-size:8px}
.field-history-card .field-history-list{max-height:340px;overflow:auto;padding-right:2px}
.field-history-card .field-history-list>p{margin:0;padding:12px;border:1px dashed var(--line);color:var(--muted);font-size:8px;line-height:1.65}
.light-off .field-wizard-progress>i{background:#293a3e}
.light-off .field-wizard-steps button,.light-off .field-wizard-panel{border-color:#36484c;background:#142328;color:#d6e0dc}
.light-off .field-wizard-steps button>b,.light-off .field-wizard-panel>legend{color:#edf4f0}
.light-off .field-wizard-steps button.active,.light-off .field-wizard-steps button[aria-current="step"]{border-color:var(--orange);background:#38251e}
.light-off .field-wizard-steps button.done{border-color:#4f8065;background:#193126}
.light-off .field-step-intro{background:#19282c;color:#b8c5c0}
.light-off .field-history-head>button{border-color:#45575b;color:#b8c5c0}

@media(max-width:700px){
  .field-wizard-steps{display:flex;gap:6px;overflow-x:auto;margin-inline:-18px;padding:0 18px 7px;scrollbar-width:none}
  .field-wizard-steps::-webkit-scrollbar{display:none}
  .field-wizard-steps button{flex:0 0 176px;min-height:64px}
  .field-wizard-steps button>b{font-size:13px}.field-wizard-steps button>small{font-size:11px}
  .field-wizard-panel{padding:16px}
  .field-wizard-panel>legend{font-size:15px;line-height:1.45}
  .field-step-intro{font-size:14px;line-height:1.75}
  .field-step-actions{display:grid;grid-template-columns:1fr;gap:8px}
  .field-step-actions button{width:100%;min-height:48px;font-size:14px}
  .field-dynamic-evidence{grid-template-columns:1fr}
  .field-quick-symptoms>span{flex:0 0 auto;font-size:12px}
  .field-history-head{align-items:flex-start}.field-history-head>button{min-height:44px;font-size:12px}
  .field-history-card .field-history-list>p{font-size:13px;line-height:1.7}
}

@media(prefers-reduced-motion:reduce){
  .field-wizard-progress>i>b{transition:none}
}

/* Fine-grained diagnosis report and evidence controls */
.field-evidence-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:3px;padding:11px 13px;border:1px solid var(--line);border-bottom:0;background:var(--ink);color:#eef4f1}
.field-evidence-title b{font-size:11px}.field-evidence-title span{font-size:8px;color:#9fafa9;text-align:right}
.field-evidence-grid{margin-top:0;padding:14px;border-style:solid;background:#eef3ee}
.field-path{margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}
.field-path-title{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:center;margin-bottom:11px}
.field-path-title h4{margin:0;font-size:14px}.field-path-title p{max-width:680px;margin:5px 0 0;color:var(--muted);font-size:9px;line-height:1.65}
.field-path-title>span{min-width:48px;height:36px;display:grid;place-items:center;border:1px solid var(--orange);background:#fff2e9;color:var(--orange-deep);font:15px Georgia,serif}
.field-current-next{grid-template-columns:1fr}
.field-current-next>span,.field-current-next>h3,.field-current-next>p{grid-column:1}
.field-current-next>h3{margin:0}.field-current-next>p small{display:block;margin-top:6px;color:#91a29c;font-size:9px;line-height:1.65}
.field-step-copy{min-width:0}
.field-step-copy>span{display:inline-block;margin-bottom:5px;padding:3px 6px;background:#e7ede9;color:#52645d;font-size:7px;font-weight:800;letter-spacing:.6px}
.field-step-copy h4{overflow-wrap:anywhere}.field-step-copy p{overflow-wrap:anywhere}
.field-step-outcomes{display:grid;grid-template-columns:repeat(3,minmax(62px,1fr));gap:6px;align-self:center}
.field-step-outcomes button{min-height:38px;border:1px solid var(--line);background:#f3f6f2;color:#4c5d57;padding:0 10px;font-size:9px;font-weight:750;white-space:nowrap;cursor:pointer}
.field-step-outcomes button:hover:not(:disabled){border-color:var(--orange);color:var(--orange-deep);background:#fff5ed}
.field-step-outcomes button[aria-pressed="true"]{border-color:var(--orange);background:var(--orange);color:#17100d;box-shadow:inset 0 0 0 1px rgba(255,255,255,.4)}
.field-step-outcomes button[data-field-step-outcome="normal"][aria-pressed="true"]{border-color:#4f9b72;background:#4f9b72;color:#fff}
.field-step-outcomes button[data-field-step-outcome="abnormal"][aria-pressed="true"]{border-color:#d65f32;background:#d65f32;color:#fff}
.field-step-outcomes button:disabled{opacity:.42;cursor:not-allowed;filter:saturate(.35)}
.diagnostic-step.outcome-normal{border-left:3px solid #4f9b72}.diagnostic-step.outcome-abnormal{border-left:3px solid #d65f32}.diagnostic-step.outcome-unable{border-left:3px solid #899691}
.diagnostic-step.locked{background:#edf1ef;color:#7f8b87}
.field-locked-note{margin-top:12px}.field-locked-note>div{min-width:0}.field-locked-note b{display:block;margin-bottom:4px;font-size:11px;color:var(--ink)}
.field-locked-note p{margin:0;color:var(--muted);font-size:9px;line-height:1.7}
.field-locked-note.danger b{color:#78391f}.field-locked-note.danger p{color:#8b5239}
.field-disclaimer{margin:14px 0 0;padding:10px 12px;border-top:1px solid var(--line);color:var(--muted);font-size:8px;line-height:1.7}
.field-disclaimer:before{content:"技术边界 · ";color:var(--orange-deep);font-weight:800}
.field-history-card .field-history-item{grid-template-columns:minmax(0,1fr) auto;gap:8px;align-items:center;padding:11px;border-color:var(--line);background:#f3f6f2}
.field-history-card .field-history-item>div{min-width:0}.field-history-card .field-history-item b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.field-history-card .field-history-item span{margin-top:3px;color:var(--orange-deep);font-size:8px;line-height:1.4;overflow-wrap:anywhere}
.field-history-card .field-history-item small{font-size:7px}.field-history-card .field-history-item button{min-width:48px;min-height:36px}
.field-step-outcomes button:focus-visible{outline:3px solid rgba(255,106,42,.32);outline-offset:2px}
.light-off .field-evidence-title{border-color:#425458;background:#081418}
.light-off .field-evidence-grid{border-color:#425458;background:#101d21}
.light-off .field-path-title>span{background:#38251e;color:#ffab82}
.light-off .field-current-next>p small{color:#9aaba5}
.light-off .field-step-copy>span{background:#26363a;color:#b7c4bf}
.light-off .field-step-outcomes button{border-color:#405256;background:#17272b;color:#c8d3cf}
.light-off .field-step-outcomes button:hover:not(:disabled){border-color:var(--orange);background:#38251e;color:#ffb18c}
.light-off .diagnostic-step.locked{background:#101d21;color:#778783}
.light-off .field-locked-note b{color:#edf4f0}.light-off .field-locked-note p{color:#b3c0bb}
.light-off .field-locked-note.danger b{color:#ffb18c}.light-off .field-locked-note.danger p{color:#efc0aa}
.light-off .field-disclaimer{border-color:#3a4b4f;color:#93a39e}
.light-off .field-history-card .field-history-item{border-color:#36484c;background:#17272b}

@media(max-width:1100px){
  .diagnostic-step{grid-template-columns:34px minmax(0,1fr)}
  .field-step-outcomes{grid-column:2;justify-self:stretch;width:100%}
}

@media(max-width:700px){
  .field-evidence-title{display:block;padding:12px}.field-evidence-title b{font-size:14px}.field-evidence-title span{display:block;margin-top:5px;font-size:12px;text-align:left}
  .field-evidence-grid{padding:12px}
  .field-path-title{grid-template-columns:minmax(0,1fr) auto;align-items:start}.field-path-title h4{font-size:17px}.field-path-title p{font-size:14px;line-height:1.7}.field-path-title>span{min-width:46px;height:38px;font-size:14px}
  .field-current-next>p small{font-size:13px;line-height:1.7}
  .field-step-copy{grid-column:2}.field-step-copy>span{font-size:11px}.field-step-copy h4{font-size:16px}.field-step-copy p{font-size:14px;line-height:1.7}
  .field-step-outcomes{grid-column:1/-1;grid-template-columns:repeat(3,minmax(0,1fr));width:100%;gap:7px;margin-top:4px}
  .field-step-outcomes button{min-width:0;min-height:48px;padding:0 5px;font-size:13px;white-space:normal;touch-action:manipulation}
  .field-locked-note{margin-top:10px}.field-locked-note b{font-size:15px}.field-locked-note p{font-size:14px;line-height:1.75}
  .field-disclaimer{padding:12px 2px 0;font-size:13px;line-height:1.75}
  .field-history-card .field-history-item{grid-template-columns:minmax(0,1fr) auto;padding:12px}
  .field-history-card .field-history-item b{font-size:14px}.field-history-card .field-history-item span,.field-history-card .field-history-item small{font-size:12px}
  .field-history-card .field-history-item button{width:auto;min-width:62px;min-height:44px;font-size:13px}
}

/* Field assistant phase 1: signal journey, automatic evidence checks and local photos */
.field-signal-card{min-width:0;margin:15px 0 18px;padding:16px;border:1px solid var(--line);background:#f7faf6}
.field-signal-head,.field-auto-head,.field-photo-result-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}
.field-signal-head h3,.field-auto-head h3,.field-photo-head h3{margin:5px 0 0;font-size:16px}
.field-signal-head>span,.field-auto-head>span,.field-photo-result-head>span{color:var(--muted);font-size:8px;line-height:1.6;text-align:right}
.field-signal-legend{display:flex;align-items:center;gap:6px;white-space:nowrap}
.field-signal-legend i{width:8px;height:8px;border-radius:50%;background:#4f9b72}.field-signal-legend i:last-of-type{margin-left:5px;background:var(--orange)}
.field-signal-scroll{min-width:0;overflow-x:auto;overscroll-behavior-inline:contain;padding:4px 2px 10px;scrollbar-width:thin}
.field-signal-track{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(112px,1fr);gap:22px;min-width:max-content}
.field-signal-node{position:relative;min-width:112px;min-height:82px;display:grid;align-content:start;gap:4px;border:1px solid var(--line);background:var(--surface);color:var(--ink);padding:11px;text-align:left;cursor:pointer;transition:border-color .2s ease,background-color .2s ease,transform .2s ease}
.field-signal-node:not(:last-child):after{content:"→";position:absolute;right:-17px;top:50%;transform:translateY(-50%);color:#95a49e;font:15px Georgia,serif;pointer-events:none}
.field-signal-node>span{font-size:10px;font-weight:800;line-height:1.45}.field-signal-node>b{font-size:8px;color:var(--muted)}.field-signal-node>small{display:-webkit-box;overflow:hidden;-webkit-line-clamp:2;-webkit-box-orient:vertical;color:var(--muted);font-size:7px;line-height:1.5}
.field-signal-node.is-checked{border-color:#6da886;box-shadow:inset 3px 0 #4f9b72}.field-signal-node.is-checked>b{color:#317154}
.field-signal-node.is-watch{border-color:#e38a5c;background:#fff6ee;box-shadow:inset 3px 0 var(--orange)}.field-signal-node.is-watch>b{color:var(--orange-deep)}
.field-signal-node.is-fault{border-color:#ce6842;background:#fff0e9;box-shadow:inset 3px 0 #cf5b32}.field-signal-node.is-fault>b{color:#a23f20}
.field-signal-node.is-selected{outline:3px solid rgba(255,106,42,.23);outline-offset:2px;transform:translateY(-1px)}
.field-signal-explain{margin-top:2px;padding:12px 14px;border-left:3px solid var(--orange);background:#eef3ee}
.field-signal-explain>div>span{display:block;color:var(--orange-deep);font-size:8px;font-weight:800;letter-spacing:.8px}.field-signal-explain h4{margin:4px 0;font-size:12px}.field-signal-explain p,.field-signal-explain li{margin:0;color:var(--muted);font-size:9px;line-height:1.7}.field-signal-explain ul{margin:6px 0 0;padding-left:18px}
.field-signal-result{margin:14px 0;background:var(--surface)}

.field-loop-auto-inputs{min-width:0}.field-loop-auto-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;padding:14px;border:1px solid var(--line);background:#eef3ee}
.field-auto-panel{min-width:0;padding:15px;border:1px solid var(--line);background:var(--surface)}
.field-auto-head{margin-bottom:10px}.field-auto-head h3{margin:4px 0 0}.field-auto-head>span{padding:4px 7px;border:1px solid #9fc1ad;background:#edf6f0;color:#317154}
.field-auto-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px}
.field-auto-card{min-width:0;padding:12px;border:1px solid var(--line);background:#f3f6f2}
.field-auto-card>span,.field-auto-card>b,.field-auto-card>p{display:block;overflow-wrap:anywhere}.field-auto-card>span{font-size:8px;color:var(--muted)}.field-auto-card>b{margin-top:6px;font:14px Georgia,serif;color:var(--ink)}.field-auto-card>p{margin:6px 0 0;color:var(--muted);font-size:8px;line-height:1.65}
.field-auto-card.is-normal{border-top:3px solid #4f9b72}.field-auto-card.is-watch{border-top:3px solid var(--orange);background:#fff6ee}.field-auto-card.is-fault{border-top:3px solid #cf5b32;background:#fff0e9}.field-auto-card.is-empty{opacity:.72}
.field-auto-note{margin:10px 0 0;padding-top:9px;border-top:1px dashed var(--line);color:var(--muted);font-size:8px;line-height:1.65}
.field-auto-result{margin:14px 0;background:#f7faf6}
.field-draft-notice{margin:12px 0 0;padding:11px 13px;border:1px solid #e2a07e;border-left:3px solid var(--orange);background:#fff2e9;color:#7a3b23;font-size:9px;line-height:1.7}

.field-photo-evidence{min-width:0;padding:15px;border:1px solid var(--line);background:#eef3ee}
.field-photo-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}.field-photo-head h3{font-size:15px}.field-photo-head p{margin:5px 0 0;color:var(--muted);font-size:8px;line-height:1.6}
.field-photo-add{min-height:42px!important;display:inline-flex!important;align-items:center;justify-content:center;flex:0 0 auto;border:1px solid var(--orange)!important;background:var(--orange);color:#17100d!important;padding:0 13px;font-size:9px!important;font-weight:800!important;cursor:pointer}#fieldPhotoInput[hidden]{display:none!important}
.field-photo-add:disabled{opacity:.58;cursor:wait}
.field-photo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:12px}
.field-photo-card{position:relative;min-width:0;overflow:hidden;border:1px solid var(--line);background:var(--surface)}
.field-photo-card>img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;background:#101a1e}
.field-photo-remove{position:absolute;z-index:1;right:6px;top:6px;width:36px;min-width:36px;height:36px;min-height:36px!important;display:grid;place-items:center;border:1px solid rgba(255,255,255,.7);border-radius:50%;background:rgba(8,20,24,.82);color:#fff;font-size:19px;line-height:1;cursor:pointer}
.field-photo-meta{padding:9px}.field-photo-meta label{gap:5px!important}.field-photo-meta select{min-height:36px!important;padding:6px 8px!important}.field-photo-meta small{display:block;margin-top:7px;color:var(--muted);font-size:7px}
.field-photo-note{margin:10px 0 0;color:var(--muted);font-size:8px;line-height:1.65}
.field-photo-result{margin:14px 0;padding:15px;border:1px solid var(--line);background:var(--surface)}.field-photo-result h4{margin:4px 0 0;font-size:13px}
.field-photo-result-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin-top:10px}.field-photo-result figure{min-width:0;margin:0;border:1px solid var(--line);background:#f3f6f2}.field-photo-result img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;background:#101a1e}.field-photo-result figcaption{padding:9px}.field-photo-result figcaption b,.field-photo-result figcaption span{display:block}.field-photo-result figcaption b{font-size:9px}.field-photo-result figcaption span{margin-top:3px;color:var(--muted);font-size:7px;line-height:1.5}

.field-signal-node:focus-visible,.field-photo-add:focus-visible,.field-photo-remove:focus-visible{outline:3px solid rgba(255,106,42,.32);outline-offset:2px}
.light-off .field-signal-card,.light-off .field-auto-panel,.light-off .field-photo-evidence,.light-off .field-photo-result{border-color:#3b4d51;background:#101d21}
.light-off .field-signal-node,.light-off .field-auto-card,.light-off .field-photo-card,.light-off .field-photo-result figure{border-color:#3b4d51;background:#17272b;color:#e9f0ed}
.light-off .field-signal-node.is-checked{border-color:#4f8065;background:#193126}.light-off .field-signal-node.is-watch,.light-off .field-auto-card.is-watch{border-color:#8b533c;background:#38251e}.light-off .field-signal-node.is-fault,.light-off .field-auto-card.is-fault{border-color:#a34f31;background:#3d211b}
.light-off .field-signal-node.is-checked>b{color:#bce1ca}.light-off .field-signal-node.is-watch>b{color:#ffb28e}.light-off .field-signal-node.is-fault>b{color:#ffc0aa}
.light-off .field-signal-explain{background:#17272b}.light-off .field-signal-explain h4,.light-off .field-auto-card>b,.light-off .field-photo-result h4{color:#edf4f0}
.light-off .field-loop-auto-grid{border-color:#425458;background:#101d21}.light-off .field-auto-head>span{border-color:#4f8065;background:#193126;color:#bce1ca}
.light-off .field-draft-notice{border-color:#8b533c;background:#38251e;color:#f2c7b4}

@media(max-width:1100px){
  .field-loop-auto-grid,.field-auto-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media(max-width:700px){
  .field-signal-card{margin:14px 0;padding:14px}.field-signal-head{display:block}.field-signal-head>span{display:flex;margin-top:8px;text-align:left}
  .field-signal-head h3,.field-auto-head h3,.field-photo-head h3{font-size:18px;line-height:1.4}
  .field-signal-scroll{margin-inline:-14px;padding:6px 14px 12px;scroll-snap-type:x proximity}
  .field-signal-track{grid-auto-columns:132px}.field-signal-node{min-width:132px;min-height:96px;padding:12px;scroll-snap-align:start}.field-signal-node>span{font-size:15px}.field-signal-node>b{font-size:12px}.field-signal-node>small{font-size:11px;line-height:1.5}
  .field-signal-explain{padding:14px}.field-signal-explain>div>span{font-size:11px}.field-signal-explain h4{font-size:17px}.field-signal-explain p,.field-signal-explain li{font-size:14px;line-height:1.75}
  .field-loop-auto-grid,.field-auto-grid{grid-template-columns:1fr}.field-loop-auto-grid{padding:12px}
  .field-auto-panel{padding:14px}.field-auto-head{display:block}.field-auto-head>span{display:inline-block;margin-top:7px;font-size:11px}.field-auto-card{padding:14px}.field-auto-card>span{font-size:12px}.field-auto-card>b{font-size:19px}.field-auto-card>p,.field-auto-note{font-size:14px;line-height:1.75}
  .field-draft-notice{padding:13px;font-size:14px;line-height:1.75}
  .field-photo-evidence{padding:14px}.field-photo-head{display:block}.field-photo-head p{font-size:13px;line-height:1.7}.field-photo-add{width:100%;min-height:48px!important;margin-top:12px;font-size:14px!important}
  .field-photo-grid{grid-template-columns:1fr}.field-photo-card{display:grid;grid-template-columns:104px minmax(0,1fr)}.field-photo-card>img{height:100%;min-height:118px;aspect-ratio:auto}.field-photo-meta{align-self:center;padding:12px}.field-photo-meta select{min-height:48px!important}.field-photo-meta small,.field-photo-note{font-size:12px;line-height:1.65}.field-photo-remove{left:54px;right:auto;width:44px;min-width:44px;height:44px;min-height:44px!important}
  .field-photo-result h4{font-size:17px}.field-photo-result-head>span{font-size:12px}.field-photo-result-grid{grid-template-columns:1fr}.field-photo-result figure{display:grid;grid-template-columns:104px minmax(0,1fr)}.field-photo-result img{height:100%;min-height:110px;aspect-ratio:auto}.field-photo-result figcaption{align-self:center;padding:12px}.field-photo-result figcaption b{font-size:14px}.field-photo-result figcaption span{font-size:12px;line-height:1.6}
}

@media(prefers-reduced-motion:reduce){
  .field-signal-node{transition:none}
}

/* 复习舱 · 间隔重复与薄弱点雷达 */
.srs-block { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line); }
.srs-block h3 { margin: 6px 0 10px; font-size: 15px; }
.srs-level { display: flex; align-items: center; gap: 8px; margin: 6px 0; font-size: 10px; }
.srs-level span { width: 30px; flex: none; }
.srs-level i { flex: 1; height: 8px; background: var(--paper); border: 1px solid var(--line); border-radius: 99px; overflow: hidden; display: block; }
.srs-level i b { display: block; height: 100%; background: var(--orange); border-radius: 99px; transition: width .4s ease; }
.srs-level em { font-style: normal; font-family: ui-monospace, monospace; color: var(--muted); width: 26px; text-align: right; }
.srs-empty { margin: 4px 0 0; font-size: 10px; color: var(--muted); }
.radar-ring { fill: none; stroke: var(--line); stroke-width: 1; }
.radar-axis { stroke: var(--line); stroke-width: 1; }
.radar-shape { fill: rgba(255, 106, 42, .18); stroke: var(--orange); stroke-width: 2; }
.radar-label { font-size: 9px; fill: var(--muted); text-anchor: middle; }
.weakest-callout { margin: 10px 0; font-size: 11px; line-height: 1.6; color: var(--muted); }
.weakest-callout b { color: var(--orange); }
.weakness-btn { width: 100%; }
.weakness-btn:disabled { opacity: .4; cursor: not-allowed; }

/* —— 统一线性图标（去 AI 味：替换 Unicode 符号）—— */
svg.ic {
  width: 1em;
  height: 1em;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  vertical-align: -0.12em;
}
.nav-icon svg.ic { font-size: 20px; }
.mobile-dock button i svg.ic { font-size: 20px; }
.mobile-more-grid button > i svg.ic { font-size: 20px; }

/* 移动端“更多功能”NEW 徽标（带保质期，JS 自动熄灭） */
.mobile-more-grid button { position: relative; }
.mobile-more-grid button em {
  position: absolute;
  top: 6px;
  right: 8px;
  border-radius: 4px;
  padding: 1px 5px;
  color: #fff;
  background: #ff6b35;
  font-size: 8px;
  font-style: normal;
  font-weight: 800;
  letter-spacing: 0.5px;
}

/* —— 知识库升级：真实学习进度 —— */
.catalog-card.learned { border-color: rgba(87, 129, 110, .55); }
.catalog-card .course-done { color: #57816e; font-size: 8px; font-weight: 700; }
.path-progress circle.done { transition: stroke-dashoffset .6s ease; }
.path-list li[data-path-course] { cursor: pointer; }
.path-list li[data-path-course]:hover b,
.path-list li[data-path-course]:focus-visible b { color: var(--orange); }
.path-list li[data-path-course]:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }

/* —— 知识库数据速查表 —— */
.lesson-table-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--surface); }
.lesson-table { width: 100%; border-collapse: collapse; font-size: 10px; line-height: 1.5; }
.lesson-table th { padding: 9px 12px; background: var(--ink); color: #dfe7e2; font-weight: 700; text-align: left; white-space: nowrap; }
.lesson-table td { padding: 9px 12px; border-top: 1px solid var(--line); color: var(--ink); vertical-align: top; }
.lesson-table tbody tr:nth-child(even) td { background: rgba(0, 0, 0, .03); }
.lesson-table-note { margin: 8px 0 0; color: var(--muted); font-size: 8px; line-height: 1.5; }
.light-off .lesson-table td { color: #e8eeea; }
.light-off .lesson-table tbody tr:nth-child(even) td { background: rgba(255, 255, 255, .04); }

/* —— 课程图解设备热点（类拆解实验室交互）—— */
.lesson-visual-stage { position: relative; }
.lesson-hotspots button {
  position: absolute;
  left: var(--x);
  top: var(--y);
  transform: translate(-50%, -50%);
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 2px solid rgba(255, 255, 255, .9);
  border-radius: 50%;
  color: #fff;
  background: rgba(18, 35, 38, .78);
  font: 700 11px Georgia, serif;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .35);
  transition: transform .15s, background .15s;
}
.lesson-hotspots button:hover { transform: translate(-50%, -50%) scale(1.15); }
.lesson-hotspots button.active { background: var(--orange); border-color: #fff; }
.lesson-hotspot-detail {
  position: relative;
  margin-top: 10px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  background: var(--surface);
  padding: 16px 18px;
}
.lesson-hotspot-detail h4 { margin: 0 34px 10px 0; font-size: 15px; }
.lesson-hotspot-detail dl { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 22px; margin: 0; }
.lesson-hotspot-detail dt { margin-bottom: 3px; color: var(--orange-deep); font-size: 8px; font-weight: 800; letter-spacing: 1px; }
.lesson-hotspot-detail dd { margin: 0; font-size: 10px; line-height: 1.6; }
.lesson-hotspot-detail .lh-unfit dd { color: #a3543a; }
.lesson-hotspot-detail > button {
  position: absolute;
  top: 8px;
  right: 10px;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  cursor: pointer;
}
@media (max-width: 700px) { .lesson-hotspot-detail dl { grid-template-columns: 1fr; } }

/* ================= 多邻国风格游戏化组件（gam- 前缀） ================= */
.gam-bar {
  display: flex;
  gap: 14px;
  align-items: stretch;
  margin: 0 0 16px;
  padding: 14px;
  background: linear-gradient(135deg, #f2fbe6 0%, #e9f7ff 100%);
  border: 3px solid #d3e9bc;
  border-radius: 20px;
  box-shadow: 0 6px 0 rgba(88, 140, 20, 0.18), 0 16px 30px rgba(5, 28, 38, 0.28);
}
.gam-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1 1 0;
  min-width: 150px;
  background: #fff;
  border: 2px solid #e2e8d8;
  border-radius: 16px;
  padding: 10px 14px;
  color: #2b3a12;
}
button.gam-cell {
  font: inherit;
  text-align: left;
  cursor: pointer;
  box-shadow: 0 4px 0 #d5e0c6;
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}
button.gam-cell:hover { border-color: #b7d98a; }
button.gam-cell:active { transform: translateY(2px); box-shadow: 0 2px 0 #d5e0c6; }
.gam-cell small { display: block; font-size: 11px; color: #7a8a5a; }
.gam-level-icon { font-size: 30px; line-height: 1; }
.gam-level-info { flex: 1; }
.gam-level-info b { font-size: 15px; }
.gam-xpbar {
  height: 10px;
  margin: 5px 0 3px;
  background: #e6edd8;
  border-radius: 99px;
  overflow: hidden;
}
.gam-xpbar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #58cc02, #8ee000);
  border-radius: 99px;
  transition: width 0.5s ease;
}
.gam-streak .gam-flame { font-size: 26px; filter: grayscale(1); opacity: 0.4; }
.gam-streak.lit .gam-flame { filter: none; opacity: 1; }
.gam-streak b { font-size: 19px; color: #ff9600; }
.gam-streak:not(.lit) b { color: #9aa588; }
.gam-goal { justify-content: center; }
.gam-ring { width: 52px; height: 52px; flex: none; }
.gam-ring-bg { fill: none; stroke: #e6edd8; stroke-width: 7; }
.gam-ring-fg {
  fill: none;
  stroke: #58cc02;
  stroke-width: 7;
  stroke-linecap: round;
  transform: rotate(-90deg);
  transform-origin: center;
  transition: stroke-dashoffset 0.5s ease;
}
.gam-goal.met .gam-ring-fg { stroke: #ffc800; }
.gam-ring-num, .gam-ring-check {
  text-anchor: middle;
  font-weight: 800;
}
.gam-ring-num { font-size: 15px; fill: #3c4a12; }
.gam-ring-check { font-size: 22px; fill: #ffb800; }
.gam-badge-icon { font-size: 24px; }
.gam-badges-btn b { font-size: 14px; }
/* +N XP 飘字 */
.gam-float {
  position: fixed;
  right: 24px;
  bottom: 92px;
  z-index: 1200;
  pointer-events: none;
  font-size: 19px;
  font-weight: 800;
  color: #58cc02;
  text-align: right;
  text-shadow: 0 2px 0 #fff, 0 0 10px rgba(88, 204, 2, 0.45);
  animation: gamFloatUp 1.2s ease-out forwards;
}
.gam-float small { display: block; font-size: 11px; font-weight: 600; color: #7aa41c; }
@keyframes gamFloatUp {
  0% { opacity: 0; transform: translateY(14px) scale(0.8); }
  15% { opacity: 1; transform: translateY(0) scale(1.12); }
  30% { transform: translateY(-6px) scale(1); }
  100% { opacity: 0; transform: translateY(-48px); }
}
/* 升级 confetti */
.gam-confetti { position: fixed; inset: 0; z-index: 1190; pointer-events: none; overflow: hidden; }
.gam-confetti i {
  position: absolute;
  top: -14px;
  width: 9px;
  height: 14px;
  border-radius: 2px;
  animation: gamConfettiFall linear forwards;
}
@keyframes gamConfettiFall {
  to { transform: translateY(108vh) rotate(720deg); opacity: 0.55; }
}
/* 徽章解锁弹卡 */
.gam-badge-pop {
  position: fixed;
  right: 24px;
  bottom: 156px;
  z-index: 1200;
  pointer-events: none;
  background: #fff;
  border: 3px solid #ffc800;
  border-radius: 16px;
  padding: 10px 16px;
  font-weight: 800;
  color: #5a4300;
  box-shadow: 0 4px 0 #e0a800;
  animation: gamBadgePop 1.6s ease forwards;
}
@keyframes gamBadgePop {
  0% { opacity: 0; transform: scale(0.5); }
  20% { opacity: 1; transform: scale(1.08); }
  35% { transform: scale(1); }
  80% { opacity: 1; }
  100% { opacity: 0; transform: translateY(-10px); }
}
/* 徽章墙 */
.gam-wall {
  margin: 0 0 16px;
  padding: 16px;
  background: #fffdf2;
  border: 3px solid #f0e3b0;
  border-radius: 20px;
}
.gam-wall-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 12px; }
.gam-wall-head b { font-size: 16px; color: #5a4300; }
.gam-wall-head small { color: #a08a3a; }
.gam-wall-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(118px, 1fr));
  gap: 10px;
}
.gam-badge {
  text-align: center;
  padding: 12px 8px;
  background: #fff;
  border: 2px solid #eee6c8;
  border-radius: 14px;
}
.gam-badge i { display: block; font-size: 28px; font-style: normal; margin-bottom: 4px; }
.gam-badge b { display: block; font-size: 13px; color: #4a3c10; }
.gam-badge small { display: block; font-size: 11px; color: #9a8c58; margin-top: 2px; }
.gam-badge:not(.owned) { background: #fafaf2; }
.gam-badge:not(.owned) i { filter: grayscale(1); opacity: 0.35; }
.gam-badge.owned { border-color: #ffc800; box-shadow: 0 3px 0 #f0d060; }
/* 移动端：横向可滚动，不挤爆布局 */
@media (max-width: 640px) {
  .gam-bar { flex-wrap: nowrap; overflow-x: auto; padding: 10px; gap: 10px; -webkit-overflow-scrolling: touch; }
  .gam-cell { flex: 0 0 auto; min-width: 148px; }
  .gam-float { right: 14px; bottom: 118px; }
  .gam-badge-pop { right: 14px; bottom: 176px; }
}
/* 尊重减少动态偏好 */
@media (prefers-reduced-motion: reduce) {
  .gam-float, .gam-badge-pop { animation-duration: 0.01s; animation-iteration-count: 1; }
  .gam-confetti { display: none; }
  .gam-xpbar i, .gam-ring-fg, button.gam-cell { transition: none; }
}

/* —— 多邻国式闯关地图（学习中心） —— */
.learn-view-tabs { padding: 18px clamp(34px, 5vw, 78px) 0; display: flex; gap: 8px; }
.learn-view-tabs button { border: 1px solid var(--line); background: var(--surface); color: inherit; padding: 9px 18px; font-size: 11px; font-weight: 700; border-radius: 999px; cursor: pointer; }
.learn-view-tabs button.active { background: #58cc02; border-color: #58cc02; color: #fff; box-shadow: 0 3px 0 #46a302; }
.learn-view-tabs button:focus-visible { outline: 3px solid #1cb0f6; outline-offset: 2px; }
#learnView .learn-layout { grid-template-columns: minmax(0, 1fr); }
#learnView.learn-mode-map .library-tools,
#learnView.learn-mode-map .category-tabs { display: none; }
.path-map { width: 100%; max-width: 640px; margin: 0 auto; }
.path-summary { display: flex; align-items: center; gap: 16px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 10px 18px; margin-bottom: 10px; }
.path-summary .path-progress { height: 64px; width: 64px; flex: none; }
.path-summary .path-progress svg { width: 64px; height: 64px; }
.path-summary .path-progress b { font-size: 15px; }
.path-summary .path-progress small { font-size: 7px; }
.path-summary-text b { display: block; font-size: 15px; }
.path-summary-text span { font-size: 10px; color: var(--muted); }
.path-track { position: relative; max-width: 420px; margin: 0 auto; padding: 6px 0 30px; }
.path-trail { position: absolute; left: 0; top: 0; z-index: 0; pointer-events: none; }
.path-trail path { stroke: var(--line); stroke-width: 5; stroke-linecap: round; stroke-dasharray: 1 14; opacity: .9; }
.path-unit { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: center; gap: 10px; margin: 20px 0 8px; padding: 13px 16px; border-radius: 14px; background: var(--unit-color, #58cc02); color: #fff; box-shadow: 0 4px 0 rgba(0, 0, 0, .22); }
.path-unit b { display: block; font-size: 14px; }
.path-unit span { font-size: 9px; opacity: .9; }
.path-unit small { flex: none; font-size: 9px; font-weight: 700; background: rgba(255, 255, 255, .22); padding: 4px 8px; border-radius: 999px; }
.path-node-row { position: relative; z-index: 1; display: flex; align-items: center; justify-content: center; min-height: 96px; }
.path-node-row:has(.path-node--current) { min-height: 124px; }
.path-node { width: 64px; height: 64px; border: 0; border-radius: 50%; display: grid; place-items: center; font-size: 22px; cursor: pointer; transform: translateX(var(--offset, 0px)); transition: filter .15s; }
.path-node:hover { filter: brightness(1.06); }
.path-node:active { transform: translateX(var(--offset, 0px)) translateY(3px); }
.path-node:focus-visible { outline: 3px solid #1cb0f6; outline-offset: 3px; }
.path-node--done { background: #58cc02; box-shadow: 0 5px 0 #46a302; color: #fff; font-size: 26px; font-weight: 800; }
.path-node--done:active { box-shadow: 0 2px 0 #46a302; }
.path-node--current { position: relative; width: 76px; height: 76px; background: #58cc02; box-shadow: 0 5px 0 #46a302; color: #fff; font-size: 28px; font-weight: 800; }
.path-node--current:active { box-shadow: 0 2px 0 #46a302; }
.path-node--current::after { content: ''; position: absolute; inset: -12px; border-radius: 50%; border: 4px solid rgba(88, 204, 2, .55); }
.path-node--locked { background: var(--line); box-shadow: 0 5px 0 rgba(0, 0, 0, .22); filter: grayscale(.4); }
.path-node--locked:active { box-shadow: 0 2px 0 rgba(0, 0, 0, .22); }
.path-start-bubble { position: absolute; left: calc(50% + var(--offset, 0px)); bottom: calc(50% + 44px); transform: translateX(-50%); z-index: 2; background: #fff; color: #58cc02; font-size: 13px; font-weight: 800; padding: 6px 16px; border-radius: 12px; box-shadow: 0 3px 0 rgba(0, 0, 0, .18); white-space: nowrap; }
.path-start-bubble::after { content: ''; position: absolute; left: 50%; bottom: -7px; transform: translateX(-50%); border: 7px solid transparent; border-top-color: #fff; border-bottom: 0; }
.path-mascot { position: absolute; top: 50%; height: 90px; width: auto; transform: translateY(-52%); z-index: 1; pointer-events: none; }
.path-mascot--left { right: calc(50% - var(--offset, 0px) + 48px); }
.path-mascot--right { left: calc(50% + var(--offset, 0px) + 48px); }
.path-pop { position: absolute; z-index: 20; width: 252px; background: #fff; color: #24312b; border-radius: 14px; padding: 16px; box-shadow: 0 10px 28px rgba(0, 0, 0, .38); }
.path-pop::before { content: ''; position: absolute; border: 8px solid transparent; }
.path-pop--right::before { right: 100%; top: 50%; transform: translateY(-50%); border-right-color: #fff; border-left: 0; }
.path-pop--left::before { left: 100%; top: 50%; transform: translateY(-50%); border-left-color: #fff; border-right: 0; }
.path-pop--below::before { bottom: 100%; left: 50%; transform: translateX(-50%); border-bottom-color: #fff; border-top: 0; }
.path-pop small { font-size: 9px; color: #8a9790; font-weight: 700; letter-spacing: .5px; }
.path-pop h3 { margin: 4px 0 6px; font-size: 17px; }
.path-pop p { margin: 0; font-size: 11px; line-height: 1.6; color: #5a6a62; }
.path-pop-xp { margin-top: 10px; font-size: 11px; font-weight: 800; color: #ff9600; }
.path-pop-cta { width: 100%; margin-top: 10px; border: 0; border-radius: 12px; background: #58cc02; box-shadow: 0 4px 0 #46a302; color: #fff; font-size: 14px; font-weight: 800; padding: 12px; cursor: pointer; }
.path-pop-cta:active { transform: translateY(2px); box-shadow: 0 2px 0 #46a302; }
.path-pop-cta:focus-visible, .path-pop-link:focus-visible, .path-pop-close:focus-visible { outline: 3px solid #1cb0f6; outline-offset: 2px; }
.path-pop-close { position: absolute; top: 6px; right: 8px; border: 0; background: none; font-size: 18px; line-height: 1; color: #9aa7a0; cursor: pointer; padding: 4px; }
.path-pop-locked { text-align: center; }
.path-pop-locked img { height: 84px; width: auto; margin: 2px auto 6px; display: block; }
.path-pop-locked b { display: block; font-size: 13px; margin-bottom: 4px; }
.path-pop-link { margin-top: 10px; border: 0; background: none; color: #1cb0f6; font-size: 10px; font-weight: 700; text-decoration: underline; cursor: pointer; padding: 2px; }
.path-trophy { position: relative; z-index: 1; margin: 24px auto 4px; max-width: 420px; display: flex; align-items: center; gap: 14px; background: linear-gradient(135deg, #ffd700, #ffb800); color: #5c4400; border-radius: 16px; padding: 16px 18px; box-shadow: 0 5px 0 #d99e00; }
.path-trophy img { height: 78px; width: auto; flex: none; }
.path-trophy b { display: block; font-size: 17px; margin-bottom: 4px; }
.path-trophy p { margin: 0; font-size: 10px; line-height: 1.6; }
@media (prefers-reduced-motion: no-preference) {
  .path-node--current { animation: pathFloat 2.4s ease-in-out infinite; }
  .path-node--current::after { animation: pathPulse 1.8s ease-out infinite; }
  .path-start-bubble { animation: pathBob 1.6s ease-in-out infinite; }
  .path-mascot { animation: pathMascotBob 2.4s ease-in-out infinite; }
}
@keyframes pathFloat { 0%, 100% { transform: translateX(var(--offset, 0px)) translateY(0); } 50% { transform: translateX(var(--offset, 0px)) translateY(-7px); } }
@keyframes pathPulse { 0% { transform: scale(.9); opacity: .9; } 100% { transform: scale(1.25); opacity: 0; } }
@keyframes pathBob { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(-5px); } }
@keyframes pathMascotBob { 0%, 100% { transform: translateY(-52%); } 50% { transform: translateY(-58%); } }
@media (max-width: 700px) {
  .learn-view-tabs { padding: 14px 16px 0; }
  .path-node-row { min-height: 84px; }
  .path-node-row:has(.path-node--current) { min-height: 108px; }
  .path-node { width: 56px; height: 56px; font-size: 19px; }
  .path-node--current { width: 66px; height: 66px; font-size: 24px; }
  .path-mascot { height: 60px; }
  .path-mascot--left { right: calc(50% - var(--offset, 0px) + 40px); }
  .path-mascot--right { left: calc(50% + var(--offset, 0px) + 40px); }
  .path-start-bubble { bottom: calc(50% + 38px); font-size: 12px; padding: 5px 12px; }
  .path-pop { width: min(252px, calc(100vw - 40px)); }
  .path-trophy img { height: 60px; }
}
@media (prefers-reduced-motion: reduce) {
  .path-node, .path-node--current, .path-start-bubble, .path-mascot, .path-node--current::after { animation: none; }
  .path-summary .path-progress circle.done { transition: none; }
}

/* —— 仪表知识库 · 多邻国式专题闯关 —— */
body.course-challenge-open { overflow: hidden; }
.course-challenge[hidden] { display: none; }
.course-challenge {
  position: fixed;
  inset: 0;
  z-index: 1800;
  background: #fff;
  color: #273329;
  font-family: ui-rounded, "SF Pro Rounded", "PingFang SC", system-ui, sans-serif;
}
#courseChallengeShell { min-height: 100%; display: grid; grid-template-rows: auto minmax(0, 1fr) auto; }
.course-challenge-top {
  width: min(960px, calc(100% - 40px));
  margin: 0 auto;
  min-height: 82px;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 82px;
  align-items: center;
  gap: 20px;
}
.course-challenge-close {
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  color: #a4aeb2;
  font-size: 34px;
  line-height: 1;
  cursor: pointer;
}
.course-challenge-close:hover { color: #69757a; }
.course-challenge-progress { height: 16px; border-radius: 999px; background: #e5e5e5; overflow: hidden; }
.course-challenge-progress i { display: block; width: 0; height: 100%; border-radius: inherit; background: #58cc02; transition: width .35s ease; }
.course-challenge-heart { justify-self: end; display: flex; align-items: center; gap: 7px; color: #ff4b4b; font-size: 26px; font-weight: 900; }
.course-challenge-heart b { font-size: 20px; }
.course-challenge-main { width: min(780px, calc(100% - 40px)); margin: 0 auto; padding: 34px 0 54px; }
.course-challenge-intro { display: grid; grid-template-columns: minmax(270px, .9fr) minmax(330px, 1.1fr); align-items: center; gap: 48px; }
.course-challenge-hero { position: relative; overflow: hidden; min-height: 400px; border: 2px solid #e5e5e5; border-radius: 30px; background: #f5f7f6; box-shadow: 0 8px 0 #e5e5e5; }
.course-challenge-hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.course-challenge-hero span { position: absolute; left: 18px; bottom: 18px; border-radius: 12px; padding: 9px 13px; background: rgba(20,31,34,.88); color: #fff; font-size: 12px; font-weight: 800; }
.course-challenge-copy > small, .course-challenge-question-head small, .course-challenge-result > small { color: #58cc02; font-size: 12px; font-weight: 900; letter-spacing: 1.6px; }
.course-challenge-copy h1, .course-challenge-question h1, .course-challenge-result h1 { margin: 9px 0 10px; color: #273329; font-size: clamp(30px, 4vw, 46px); line-height: 1.12; letter-spacing: -1.5px; }
.course-challenge-copy > p { margin: 0; color: #69757a; font-size: 16px; line-height: 1.7; }
.course-challenge-copy ul { display: grid; gap: 9px; margin: 20px 0 0; padding: 0; list-style: none; }
.course-challenge-copy li { color: #526066; font-size: 14px; font-weight: 700; }
.course-challenge-mission { display: grid; grid-template-columns: 58px 1fr; gap: 13px; align-items: center; margin-top: 22px; border: 2px solid #e5e5e5; border-radius: 18px; padding: 13px 16px; }
.course-challenge-mission img { width: 58px; height: 58px; object-fit: contain; }
.course-challenge-mission b, .course-challenge-mission span { display: block; }
.course-challenge-mission b { font-size: 15px; }
.course-challenge-mission span { margin-top: 4px; color: #7f8b90; font-size: 12px; line-height: 1.5; }
.course-challenge-question { display: flex; flex-direction: column; justify-content: center; max-width: 720px; }
.course-challenge-question-head { display: grid; grid-template-columns: 76px minmax(0,1fr); gap: 18px; align-items: start; margin-bottom: 28px; }
.course-challenge-question-head h1 { max-width: 650px; margin-top: 6px; font-size: clamp(26px, 4vw, 38px); }
.course-challenge-question-head p { margin: 0; color: #8b9599; font-size: 14px; }
.course-challenge-symbol { width: 70px; height: 70px; display: grid; place-items: center; border: 3px solid #58cc02; border-radius: 22px; background: #ecffd9; color: #46a302; font: 900 22px Georgia, serif; box-shadow: 0 5px 0 #b9e88f; }
.course-challenge-options { display: grid; gap: 12px; }
.course-challenge-options button {
  width: 100%;
  min-height: 70px;
  display: grid;
  grid-template-columns: 42px minmax(0,1fr) 30px;
  gap: 14px;
  align-items: center;
  border: 2px solid #e5e5e5;
  border-bottom-width: 5px;
  border-radius: 16px;
  background: #fff;
  color: #354147;
  padding: 11px 15px;
  text-align: left;
  font: inherit;
  cursor: pointer;
  transition: transform .08s ease, border-color .15s ease, background .15s ease;
}
.course-challenge-options button:hover:not(:disabled) { background: #f7fbff; border-color: #84d8ff; }
.course-challenge-options button:active:not(:disabled) { transform: translateY(3px); border-bottom-width: 2px; margin-bottom: 3px; }
.course-challenge-options button.selected { border-color: #1cb0f6; background: #ddf4ff; color: #167da9; }
.course-challenge-options button.correct { border-color: #58cc02; background: #d7ffb8; color: #397a0b; }
.course-challenge-options button.wrong { border-color: #ff4b4b; background: #ffdfe0; color: #c51e2b; }
.course-challenge-options button:disabled { cursor: default; opacity: 1; }
.course-challenge-options i { width: 38px; height: 38px; display: grid; place-items: center; border: 2px solid currentColor; border-radius: 11px; font-size: 14px; font-style: normal; font-weight: 900; }
.course-challenge-options span { font-size: 15px; line-height: 1.55; font-weight: 750; }
.course-challenge-options kbd { justify-self: end; border: 1px solid #d9dfe1; border-radius: 7px; background: #f5f6f6; color: #8a9599; padding: 4px 8px; font-family: inherit; font-size: 12px; font-weight: 700; }
.course-challenge-footer { min-height: 118px; border-top: 2px solid #e5e5e5; padding: 20px max(20px, calc((100vw - 780px)/2)); display: flex; align-items: center; justify-content: flex-end; gap: 28px; background: #fff; }
.course-challenge-footer > div:first-child { margin-right: auto; }
.course-challenge-footer > div:first-child b, .course-challenge-footer > div:first-child span { display: block; }
.course-challenge-footer > div:first-child b { font-size: 18px; }
.course-challenge-footer > div:first-child span { margin-top: 5px; color: #778388; font-size: 13px; line-height: 1.5; }
.course-challenge-footer.is-correct { border-color: #a5ed6e; background: #d7ffb8; color: #397a0b; }
.course-challenge-footer.is-wrong { border-color: #ffb2b5; background: #ffdfe0; color: #c51e2b; }
.course-challenge-feedback { display: flex; gap: 14px; align-items: center; max-width: 600px; }
.course-challenge-feedback > i { width: 54px; height: 54px; flex: none; display: grid; place-items: center; border: 3px solid currentColor; border-radius: 50%; font-size: 25px; font-style: normal; font-weight: 900; }
.course-challenge-feedback b, .course-challenge-feedback span { display: block; }
.course-challenge-feedback span { margin-top: 4px; font-size: 13px; line-height: 1.55; }
.course-challenge-actions { display: flex; gap: 10px; flex: none; }
.course-challenge-primary, .course-challenge-secondary { min-width: 150px; min-height: 52px; border-radius: 14px; padding: 10px 22px; font: 900 14px inherit; cursor: pointer; }
.course-challenge-primary { border: 0; border-bottom: 5px solid #46a302; background: #58cc02; color: #fff; }
.course-challenge-primary:hover:not(:disabled) { filter: brightness(1.04); }
.course-challenge-primary:active:not(:disabled) { transform: translateY(3px); border-bottom-width: 2px; }
.course-challenge-primary:disabled { border-color: #b7bec0; background: #dfe3e4; color: #9aa3a6; cursor: not-allowed; }
.course-challenge-secondary { border: 2px solid #d9dfe1; border-bottom-width: 5px; background: #fff; color: #1cb0f6; }
.course-challenge-result { display: grid; place-items: center; align-content: center; text-align: center; }
.course-challenge-result > img { width: 150px; height: 150px; object-fit: contain; margin-bottom: 8px; }
.course-challenge-result > p { max-width: 540px; margin: 0; color: #6c787d; font-size: 16px; line-height: 1.65; }
.course-challenge-result.failed > small { color: #ff4b4b; }
.course-result-stats { width: min(540px, 100%); display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-top: 26px; }
.course-result-stats div { border: 2px solid #e5e5e5; border-bottom-width: 5px; border-radius: 16px; padding: 14px; }
.course-result-stats span, .course-result-stats b { display: block; }
.course-result-stats span { color: #8a9599; font-size: 12px; font-weight: 800; }
.course-result-stats b { margin-top: 5px; color: #58cc02; font-size: 25px; }
.course-challenge button:focus-visible { outline: 4px solid rgba(28,176,246,.42); outline-offset: 3px; }

@media (max-width: 700px) {
  .course-challenge-top { width: calc(100% - 28px); min-height: 66px; grid-template-columns: 38px minmax(0,1fr) 58px; gap: 10px; }
  .course-challenge-close { width: 36px; height: 36px; font-size: 29px; }
  .course-challenge-progress { height: 13px; }
  .course-challenge-heart { gap: 4px; font-size: 21px; }
  .course-challenge-heart b { font-size: 17px; }
  .course-challenge-main { width: calc(100% - 32px); padding: 18px 0 26px; overflow-y: auto; }
  .course-challenge-intro { display: block; }
  .course-challenge-hero { min-height: 190px; border-radius: 20px; margin-bottom: 22px; box-shadow: 0 5px 0 #e5e5e5; }
  .course-challenge-copy h1 { font-size: 31px; }
  .course-challenge-copy > p { font-size: 14px; }
  .course-challenge-mission { grid-template-columns: 48px 1fr; padding: 10px 12px; }
  .course-challenge-mission img { width: 48px; height: 48px; }
  .course-challenge-copy ul { display: none; }
  .course-challenge-question { justify-content: flex-start; }
  .course-challenge-question-head { grid-template-columns: 54px minmax(0,1fr); gap: 12px; margin: 10px 0 20px; }
  .course-challenge-symbol { width: 52px; height: 52px; border-radius: 16px; font-size: 16px; box-shadow: 0 4px 0 #b9e88f; }
  .course-challenge-question-head h1 { font-size: 23px; letter-spacing: -.5px; }
  .course-challenge-options { gap: 9px; }
  .course-challenge-options button { min-height: 62px; grid-template-columns: 34px minmax(0,1fr); gap: 10px; border-radius: 14px; padding: 9px 11px; }
  .course-challenge-options i { width: 32px; height: 32px; border-radius: 9px; }
  .course-challenge-options span { font-size: 13px; line-height: 1.45; }
  .course-challenge-options kbd { display: none; }
  .course-challenge-footer { min-height: 92px; display: block; padding: 13px 16px calc(13px + env(safe-area-inset-bottom)); }
  .course-challenge-footer > div:first-child { margin: 0 0 10px; }
  .course-challenge-footer > div:first-child b { font-size: 15px; }
  .course-challenge-footer > div:first-child span { font-size: 11px; }
  .course-challenge-feedback { gap: 9px; }
  .course-challenge-feedback > i { width: 38px; height: 38px; font-size: 18px; }
  .course-challenge-feedback span { display: -webkit-box; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; font-size: 11px; }
  .course-challenge-actions { width: 100%; gap: 8px; }
  .course-challenge-primary, .course-challenge-secondary { flex: 1; min-width: 0; min-height: 50px; padding: 9px 12px; }
  .course-challenge-footer > .course-challenge-primary { width: 100%; }
  .course-challenge-result > img { width: 105px; height: 105px; }
  .course-challenge-result h1 { font-size: 32px; }
  .course-challenge-result > p { font-size: 13px; }
  .course-result-stats { gap: 7px; margin-top: 18px; }
  .course-result-stats div { padding: 10px 5px; }
  .course-result-stats b { font-size: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  .course-challenge-progress i, .course-challenge-options button { transition: none; }
}