styles.css

:root {
  color-scheme: dark;
  --bg: #050c16;
  --surface: rgba(12, 25, 40, 0.84);
  --surface-2: #0c1a2b;
  --line: rgba(142, 174, 201, 0.16);
  --line-bright: rgba(71, 231, 205, 0.36);
  --text: #f4f8fb;
  --muted: #8499ad;
  --aqua: #39e6c6;
  --aqua-dark: #11ad9c;
  --blue: #51a7ff;
  --amber: #ffc66d;
  --danger: #ff7083;
  --radius: 18px;
  --shadow: 0 25px 70px rgba(0, 0, 0, 0.26);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; overflow-x: hidden; background: var(--bg); color: var(--text); font-family: "Poppins", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
body::before { content: ""; position: fixed; inset: 0; z-index: -3; opacity: .28; background-image: linear-gradient(rgba(87, 145, 180, .08) 1px, transparent 1px), linear-gradient(90deg, rgba(87, 145, 180, .08) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(to bottom, black, transparent 80%); }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
svg { width: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.ambient { position: fixed; z-index: -2; border-radius: 50%; filter: blur(120px); pointer-events: none; }
.ambient-one { width: 520px; height: 520px; left: -220px; top: -200px; background: rgba(15, 111, 150, .25); }
.ambient-two { width: 480px; height: 480px; right: -230px; top: 240px; background: rgba(33, 211, 178, .11); }

.topbar { height: 76px; display: flex; align-items: center; justify-content: space-between; padding: 0 max(24px, calc((100vw - 1240px) / 2)); border-bottom: 1px solid var(--line); background: rgba(5, 12, 22, .72); backdrop-filter: blur(18px); position: sticky; top: 0; z-index: 20; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; }
.brand-icon { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid var(--line-bright); border-radius: 13px; color: var(--aqua); background: linear-gradient(145deg, rgba(57, 230, 198, .14), rgba(81, 167, 255, .06)); box-shadow: inset 0 1px rgba(255,255,255,.05), 0 0 32px rgba(57,230,198,.08); }
.brand-icon svg { width: 24px; }
.brand > span:last-child { display: grid; gap: 2px; }
.brand strong { font-size: 15px; letter-spacing: -.01em; }
.brand small { color: var(--muted); font: 700 8px/1.1 ui-monospace, monospace; letter-spacing: .16em; }
.app-tabs { display: flex; align-items: center; gap: 4px; padding: 4px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.025); }
.app-tab { padding: 8px 12px; border: 0; border-radius: 8px; color: var(--muted); background: transparent; font-size: 9px; font-weight: 600; cursor: pointer; transition: .18s ease; }
.app-tab:hover { color: var(--text); }
.app-tab.active { color: #04151a; background: var(--aqua); box-shadow: 0 4px 18px rgba(57,230,198,.16); }
.topbar-actions { display: flex; gap: 12px; align-items: center; }
.model-link { display: flex; align-items: center; gap: 7px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 10px; color: #b9c8d4; background: rgba(255,255,255,.025); font-size: 9px; font-weight: 600; text-decoration: none; }
.model-link span { display: grid; place-items: center; width: 20px; height: 20px; border-radius: 6px; color: #101820; background: #ffd21e; font-size: 8px; font-weight: 800; }
.model-link:hover { color: var(--text); border-color: var(--line-bright); }
.system-pill { display: flex; align-items: center; gap: 8px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 999px; color: #b5c4d1; font-size: 10px; background: rgba(255,255,255,.025); }
.system-pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 12px currentColor; }
.system-pill i.ready { background: var(--aqua); }
.system-pill i.error { background: var(--danger); }
.icon-link { width: 36px; height: 36px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 10px; color: var(--muted); }
.icon-link:hover { color: var(--text); border-color: var(--line-bright); }

.page-shell { width: min(1240px, calc(100% - 40px)); margin: 0 auto; padding: 34px 0 24px; }
.tab-panel { display: none; animation: tab-in .2s ease; }
.tab-panel.active { display: block; }
@keyframes tab-in { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }
#tab-reader .intro { grid-template-columns: minmax(0, 1fr) 310px; align-items: center; gap: 28px; margin-bottom: 12px; }
#tab-reader .intro .kicker { margin-bottom: 5px; font-size: 7px; }
#tab-reader .intro h1 { margin-bottom: 4px; font-size: clamp(19px, 2vw, 27px); line-height: 1.1; letter-spacing: -.035em; }
#tab-reader .intro > div > p { max-width: 680px; font-size: 9px; line-height: 1.4; }
#tab-reader .model-card { padding: 12px 15px; border-radius: 14px; }
#tab-reader .model-card-head { padding-bottom: 9px; }
#tab-reader .model-orbit { width: 30px; height: 30px; }
#tab-reader .model-card dl { margin-top: 9px; }
#tab-reader .model-card dl div { gap: 2px; }
#tab-reader .upload-panel { padding: 15px; }
#tab-reader .upload-panel .section-title { margin-bottom: 10px; }
#tab-reader .drop-zone { min-height: 138px; gap: 4px; padding: 13px; }
#tab-reader .upload-symbol { width: 42px; height: 42px; margin-bottom: 2px; }
#tab-reader .drop-zone small { margin-top: 2px; }
#tab-reader .photo-guide { display: none; }
#tab-reader .range-control { gap: 5px; }
#tab-reader .range-control small { line-height: 1.3; }
#tab-reader .model-status { order: 3; margin-top: -7px; }
#tab-reader .canvas-wrap { min-height: 380px; }
.settings-strip { display: grid; grid-template-columns: 170px repeat(3, minmax(0, 1fr)); align-items: stretch; gap: 10px; margin-bottom: 14px; padding: 10px; border-color: rgba(81,167,255,.48); border-radius: 14px; background: linear-gradient(115deg, rgba(23,72,116,.72), rgba(12,37,66,.9)); box-shadow: 0 12px 34px rgba(9,63,105,.18), inset 0 1px rgba(126,204,255,.08); }
.settings-strip-title { display: flex; align-items: center; gap: 10px; }
.settings-strip-title > div { display: grid; gap: 2px; }
.settings-strip-title small { color: #8fcaff; font: 700 7px ui-monospace, monospace; letter-spacing: .12em; }
.settings-strip-title h2 { margin: 0; color: #f3f9ff; font-size: 12px; }
.settings-strip .step-number { color: #051526; border-color: #69bfff; background: #69bfff; }
.settings-strip .range-control { gap: 4px; padding: 9px 10px; border: 1px solid rgba(105,191,255,.24); border-radius: 10px; background: rgba(4,18,34,.38); }
.settings-strip .range-control > span { color: #e4f2ff; font-size: 9px; }
.settings-strip .range-control output { color: #7ee8ff; }
.settings-strip .range-control small { min-height: 18px; color: #8da9bf; font-size: 7px; line-height: 1.35; }
.intro { display: grid; grid-template-columns: minmax(0, 1fr) 350px; align-items: end; gap: 48px; margin-bottom: 38px; }
.kicker { display: flex; align-items: center; gap: 9px; margin-bottom: 15px; color: var(--aqua); font: 800 10px ui-monospace, monospace; letter-spacing: .18em; }
.kicker span { width: 22px; height: 1px; background: var(--aqua); box-shadow: 0 0 8px var(--aqua); }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 16px; font-size: clamp(38px, 5vw, 68px); line-height: .98; letter-spacing: -.055em; font-weight: 720; }
h1 em { color: transparent; font-style: normal; background: linear-gradient(90deg, var(--aqua), #62b8ff); background-clip: text; -webkit-background-clip: text; }
.intro > div > p { max-width: 690px; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.7; }
.model-card { padding: 19px; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, rgba(16, 34, 54, .75), rgba(8, 19, 32, .85)); box-shadow: var(--shadow); }
.model-card-head { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.model-card-head div { display: grid; gap: 3px; }
.model-card-head small, .section-title small { color: var(--muted); font: 700 8px ui-monospace, monospace; letter-spacing: .14em; }
.model-card-head strong { font-size: 13px; }
.model-orbit { width: 36px; height: 36px; display: grid; place-items: center; border: 1px solid rgba(57,230,198,.25); border-radius: 50%; }
.model-orbit::before { content: ""; width: 18px; height: 18px; border: 1px dashed var(--aqua); border-radius: 50%; animation: spin 5s linear infinite; }
.model-orbit i { position: absolute; width: 6px; height: 6px; border-radius: 50%; background: var(--aqua); box-shadow: 0 0 12px var(--aqua); }
.live-tag { padding: 5px 7px; border-radius: 6px; background: rgba(57,230,198,.1); color: var(--aqua); font: 800 8px ui-monospace, monospace; letter-spacing: .1em; }
.model-card dl { display: grid; grid-template-columns: repeat(3, 1fr); margin: 15px 0 0; }
.model-card dl div { display: grid; gap: 4px; padding-left: 12px; border-left: 1px solid var(--line); }
.model-card dt { color: var(--muted); font-size: 9px; }
.model-card dd { margin: 0; color: #dce7ef; font: 700 10px ui-monospace, monospace; }
@keyframes spin { to { transform: rotate(360deg); } }

.app-grid { display: grid; grid-template-columns: 360px minmax(0, 1fr); gap: 18px; align-items: start; }
.control-column, .results-column { display: grid; gap: 14px; }
.glass-panel { border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, rgba(13, 28, 45, .88), rgba(8, 19, 32, .9)); box-shadow: var(--shadow); backdrop-filter: blur(16px); }
.upload-panel, .settings-panel, .viewer-panel, .reading-panel, .digits-panel { padding: 20px; }
.section-title { display: flex; align-items: center; gap: 12px; margin-bottom: 17px; }
.section-title.compact { margin-bottom: 0; }
.section-title > div { display: grid; gap: 3px; }
.section-title h2 { margin: 0; font-size: 15px; letter-spacing: -.02em; }
.step-number { width: 30px; height: 30px; display: grid; place-items: center; border: 1px solid rgba(57,230,198,.22); border-radius: 9px; color: var(--aqua); background: rgba(57,230,198,.06); font: 800 10px ui-monospace, monospace; }
.quiet-button { margin-left: auto; padding: 6px 0; border: 0; background: transparent; color: var(--muted); font-size: 10px; cursor: pointer; }
.quiet-button:hover:not(:disabled) { color: var(--aqua); }
.quiet-button:disabled { opacity: .3; cursor: default; }

.drop-zone { position: relative; min-height: 220px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 7px; padding: 22px; overflow: hidden; border: 1px dashed rgba(81,167,255,.36); border-radius: 14px; background: rgba(4,13,24,.56); text-align: center; cursor: pointer; transition: .18s ease; }
.drop-zone::after { content: ""; position: absolute; width: 130px; height: 130px; border-radius: 50%; background: rgba(57,230,198,.06); filter: blur(32px); }
.drop-zone:hover, .drop-zone.dragging { transform: translateY(-2px); border-color: var(--aqua); background: rgba(22,71,76,.2); }
.drop-zone input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.drop-zone > * { z-index: 1; }
.drop-zone strong { font-size: 13px; }
.drop-zone > span:not(.upload-symbol), .drop-zone small { color: var(--muted); font-size: 10px; }
.drop-zone small { margin-top: 7px; font: 700 8px ui-monospace, monospace; letter-spacing: .08em; }
.upload-symbol { width: 52px; height: 52px; display: grid; place-items: center; margin-bottom: 5px; border: 1px solid rgba(81,167,255,.24); border-radius: 15px; color: var(--blue); background: rgba(81,167,255,.09); }
.upload-symbol svg { width: 24px; }
.photo-guide { display: flex; align-items: flex-start; gap: 10px; margin-top: 13px; padding: 11px; border: 1px solid rgba(81,167,255,.12); border-radius: 10px; background: rgba(81,167,255,.045); }
.photo-guide svg { width: 15px; flex: 0 0 auto; color: var(--blue); }
.photo-guide p { margin: 0; color: var(--muted); font-size: 9px; line-height: 1.55; }
.photo-guide strong { display: block; margin-bottom: 2px; color: #cbd8e4; }

.settings-panel { display: grid; gap: 18px; }
.range-control { display: grid; gap: 8px; }
.range-control > span { display: flex; justify-content: space-between; gap: 12px; color: #c4d1dc; font-size: 10px; }
.range-control output { color: var(--aqua); font: 800 10px ui-monospace, monospace; }
.range-control small { color: #667d91; font-size: 8px; line-height: 1.45; }
.range-control small b { color: var(--amber); }
.unknown-control { padding-top: 14px; border-top: 1px solid var(--line); }
.unknown-control output { color: var(--amber); }
input[type="range"] { width: 100%; height: 4px; border-radius: 99px; appearance: none; background: linear-gradient(90deg, var(--aqua) var(--range-progress, 10%), #213349 var(--range-progress, 10%)); cursor: pointer; }
input[type="range"]::-webkit-slider-thumb { width: 15px; height: 15px; border: 3px solid #081522; border-radius: 50%; appearance: none; background: var(--aqua); box-shadow: 0 0 0 1px var(--aqua), 0 0 14px rgba(57,230,198,.45); }
.analyze-button { width: 100%; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; padding: 15px 16px; border: 0; border-radius: 14px; color: #031713; background: linear-gradient(110deg, #43e8c9, #4bb9e9); box-shadow: 0 14px 34px rgba(40,208,190,.18); cursor: pointer; text-align: left; }
.analyze-button:disabled { filter: grayscale(.45); opacity: .48; cursor: not-allowed; box-shadow: none; }
.analyze-button:not(:disabled):hover { filter: brightness(1.08); transform: translateY(-1px); }
.button-icon { width: 35px; height: 35px; display: grid; place-items: center; border-radius: 10px; background: rgba(0,0,0,.11); }
.analyze-button > span:nth-child(2) { display: grid; gap: 2px; }
.analyze-button b { font-size: 12px; }
.analyze-button small { font-size: 8px; opacity: .7; }
.button-arrow { width: 18px; }
.model-status { min-height: 16px; display: flex; align-items: center; justify-content: center; gap: 7px; color: var(--muted); font-size: 9px; text-align: center; }
.model-status i { width: 6px; height: 6px; border-radius: 50%; background: var(--aqua); }
.model-status i.loading { animation: pulse 1.1s infinite; }
.model-status i.error { background: var(--danger); }
@keyframes pulse { 50% { opacity: .25; transform: scale(.7); } }

.viewer-panel { padding-bottom: 0; overflow: hidden; }
.viewer-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 17px; }
.viewer-actions { display: flex; gap: 8px; }
.view-switch { display: flex; padding: 3px; border: 1px solid var(--line); border-radius: 9px; background: rgba(3,11,20,.5); }
.view-switch button { padding: 6px 10px; border: 0; border-radius: 6px; background: transparent; color: var(--muted); font-size: 9px; cursor: pointer; }
.view-switch button.active { background: rgba(57,230,198,.12); color: var(--aqua); }
.tool-button { display: flex; align-items: center; gap: 6px; padding: 0 10px; border: 1px solid var(--line); border-radius: 9px; background: rgba(255,255,255,.025); color: var(--muted); font-size: 9px; cursor: pointer; }
.tool-button svg { width: 14px; }
.tool-button:hover:not(:disabled) { color: var(--text); border-color: var(--line-bright); }
.tool-button:disabled { opacity: .35; cursor: default; }
.canvas-wrap { position: relative; min-height: 470px; display: grid; place-items: center; overflow: hidden; border: 1px solid var(--line); border-radius: 13px; background: #030914; }
.canvas-wrap::before { content: ""; position: absolute; inset: 0; opacity: .15; pointer-events: none; background-image: linear-gradient(rgba(74,164,207,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(74,164,207,.12) 1px, transparent 1px); background-size: 28px 28px; }
.canvas-wrap canvas { display: block; width: 100%; height: auto; max-height: 600px; object-fit: contain; z-index: 1; }
.canvas-placeholder { position: absolute; inset: 0; z-index: 2; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--muted); text-align: center; }
.canvas-placeholder strong { margin-top: 18px; color: #c4d1dc; font-size: 13px; }
.canvas-placeholder p { margin: 7px 0 0; font-size: 10px; }
.canvas-wrap:not(.empty) .canvas-placeholder { display: none; }
.placeholder-reticle { position: relative; width: 84px; height: 84px; }
.placeholder-reticle i { position: absolute; width: 24px; height: 24px; border-color: rgba(57,230,198,.42); border-style: solid; }
.placeholder-reticle i:nth-child(1) { left: 0; top: 0; border-width: 1px 0 0 1px; }
.placeholder-reticle i:nth-child(2) { right: 0; top: 0; border-width: 1px 1px 0 0; }
.placeholder-reticle i:nth-child(3) { left: 0; bottom: 0; border-width: 0 0 1px 1px; }
.placeholder-reticle i:nth-child(4) { right: 0; bottom: 0; border-width: 0 1px 1px 0; }
.placeholder-reticle b { position: absolute; width: 7px; height: 7px; left: 50%; top: 50%; transform: translate(-50%,-50%); border-radius: 50%; background: var(--aqua); box-shadow: 0 0 18px var(--aqua); }
.scan-overlay { display: none; position: absolute; z-index: 3; inset: 0; pointer-events: none; background: linear-gradient(to bottom, transparent, rgba(57,230,198,.04), transparent); }
.canvas-wrap.scanning .scan-overlay { display: block; }
.scan-overlay span { position: absolute; left: 0; right: 0; height: 1px; background: var(--aqua); box-shadow: 0 0 16px var(--aqua); animation: scan 1.5s ease-in-out infinite; }
@keyframes scan { 0%,100% { top: 8%; opacity: .3; } 50% { top: 92%; opacity: 1; } }
.image-badge { display: none; position: absolute; z-index: 4; left: 12px; top: 12px; padding: 6px 8px; border: 1px solid var(--line); border-radius: 7px; color: #b6c5d2; background: rgba(3,9,20,.74); backdrop-filter: blur(8px); font: 700 8px ui-monospace, monospace; letter-spacing: .1em; }
.canvas-wrap:not(.empty) .image-badge { display: block; }
.metric-strip { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0 -20px; padding: 0 20px; border-top: 1px solid var(--line); background: rgba(4,12,22,.44); }
.metric-strip div { display: grid; gap: 5px; padding: 14px; border-left: 1px solid var(--line); }
.metric-strip div:first-child { border-left: 0; }
.metric-strip small { color: var(--muted); font: 700 8px ui-monospace, monospace; letter-spacing: .1em; }
.metric-strip strong { font: 700 13px ui-monospace, monospace; }
.result-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 14px; }
.result-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: 15px; color: var(--muted); font: 700 8px ui-monospace, monospace; letter-spacing: .12em; }
.result-heading b { padding: 5px 7px; border-radius: 6px; color: var(--muted); background: rgba(255,255,255,.04); font-size: 7px; }
.result-heading b.success { color: var(--aqua); background: rgba(57,230,198,.1); }
.result-heading b.warning { color: var(--amber); background: rgba(255,198,109,.1); }
.reading-line { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
#readingOutput { overflow: hidden; color: var(--text); font: 760 clamp(28px, 4vw, 42px)/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .13em; text-overflow: ellipsis; }
#copyButton { width: 34px; height: 34px; display: grid; place-items: center; flex: 0 0 auto; border: 1px solid var(--line); border-radius: 9px; background: rgba(255,255,255,.025); color: var(--muted); cursor: pointer; }
#copyButton svg { width: 15px; }
#copyButton:hover:not(:disabled) { color: var(--aqua); border-color: var(--line-bright); }
#copyButton:disabled { opacity: .3; cursor: default; }
.raw-reading-row { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 9px; margin-top: 13px; padding: 9px 10px; border: 1px solid var(--line); border-radius: 9px; background: rgba(255,255,255,.02); }
.raw-reading-row span { color: var(--muted); font-size: 8px; }
.raw-reading-row output { color: #d5e1ea; font: 700 11px ui-monospace, monospace; letter-spacing: .08em; }
.raw-reading-row b { color: var(--muted); font: 700 7px ui-monospace, monospace; text-transform: uppercase; }
.raw-reading-row b.has-unknown { color: var(--amber); }
.quality-row { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 9px; margin-top: 19px; color: var(--muted); font-size: 8px; }
.quality-track { height: 4px; overflow: hidden; border-radius: 99px; background: #1b2b3d; }
.quality-track i { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--blue), var(--aqua)); transition: width .4s ease; }
.quality-row strong { color: #b9c7d3; font-size: 8px; }
.digit-list { min-height: 67px; display: flex; flex-wrap: wrap; gap: 8px; align-content: flex-start; }
.empty-copy { margin: auto 0; color: var(--muted); font-size: 9px; }
.digit-chip { min-width: 74px; display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 8px; padding: 8px 9px; border: 1px solid var(--line); border-radius: 10px; background: rgba(255,255,255,.025); }
.digit-chip b { width: 25px; height: 25px; display: grid; place-items: center; border-radius: 7px; color: #061510; background: var(--aqua); font: 800 13px ui-monospace, monospace; }
.digit-chip span { display: grid; gap: 3px; color: var(--muted); font-size: 7px; }
.digit-chip strong { color: #d4e0e9; font: 700 9px ui-monospace, monospace; }
.digit-chip.unknown { border-color: rgba(255,198,109,.28); background: rgba(255,198,109,.05); }
.digit-chip.unknown b { color: #251603; background: var(--amber); }
.digit-chip.unknown strong { color: var(--amber); }

.performance-section { margin-top: 0; padding-top: 0; border-top: 0; }
.performance-heading { display: flex; align-items: end; justify-content: space-between; gap: 36px; margin-bottom: 22px; }
.performance-heading .kicker { margin-bottom: 9px; }
.performance-heading h2 { margin: 0 0 9px; font-size: clamp(25px, 3vw, 36px); letter-spacing: -.04em; }
.performance-heading p { max-width: 700px; margin: 0; color: var(--muted); font-size: 11px; line-height: 1.6; }
.evidence-link { flex: 0 0 auto; padding: 9px 12px; border: 1px solid var(--line); border-radius: 9px; color: #b8c8d5; background: rgba(255,255,255,.025); font-size: 9px; text-decoration: none; }
.evidence-link:hover { color: var(--aqua); border-color: var(--line-bright); }
.evidence-link span { color: var(--aqua); }
.metric-card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 11px; }
.validation-metric { position: relative; min-height: 126px; padding: 15px; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(145deg, rgba(13,28,45,.86), rgba(8,19,32,.9)); }
.validation-metric.featured { border-color: rgba(57,230,198,.28); box-shadow: inset 0 1px rgba(57,230,198,.08); }
.validation-metric > div { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.validation-metric span { color: var(--muted); font: 700 8px ui-monospace, monospace; letter-spacing: .1em; }
.validation-metric strong { font: 750 25px ui-monospace, monospace; letter-spacing: -.05em; }
.validation-metric strong small { color: var(--aqua); font-size: 10px; }
.validation-metric p { min-height: 28px; margin: 10px 0; color: var(--muted); font-size: 9px; line-height: 1.45; }
.validation-metric > i { display: block; width: 100%; height: 4px; overflow: hidden; border-radius: 99px; background: #1a2b3e; }
.validation-metric > i::after { content: ""; display: block; width: var(--metric); height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--blue), var(--aqua)); }
.metric-comparison { margin-top: 10px; padding: 16px 20px; }
.chart-header, .evidence-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; }
.chart-header { margin-bottom: 20px; }
.chart-header small, .evidence-heading small { color: var(--aqua); font: 700 8px ui-monospace, monospace; letter-spacing: .12em; }
.chart-header h3, .evidence-heading h3 { margin: 4px 0 0; font-size: 15px; }
.chart-header > span, .evidence-heading p { margin: 0; color: var(--muted); font-size: 8px; }
.metric-bars { display: grid; gap: 12px; }
.metric-bars > div { display: grid; grid-template-columns: 92px 1fr 48px; align-items: center; gap: 12px; }
.metric-bars span { color: #bbc9d5; font-size: 9px; }
.metric-bars b { height: 16px; overflow: hidden; border-left: 1px solid #557188; border-radius: 0 4px 4px 0; background: repeating-linear-gradient(90deg, rgba(112,145,172,.06) 0, rgba(112,145,172,.06) 1px, transparent 1px, transparent 25%); }
.metric-bars i { display: block; width: var(--value); height: 100%; border: 1px solid rgba(57,230,198,.42); border-left: 0; border-radius: 0 4px 4px 0; background: rgba(57,230,198,.22); }
.metric-bars strong { text-align: right; color: var(--aqua); font: 700 10px ui-monospace, monospace; }
.chart-axis { display: flex; justify-content: space-between; margin: 8px 60px 0 104px; color: #526b80; font: 700 7px ui-monospace, monospace; }
.evidence-heading { margin: 18px 0 10px; }
.evidence-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 9px; }
.evidence-card { overflow: hidden; border: 1px solid var(--line); border-radius: 13px; color: var(--text); background: rgba(11,25,41,.7); text-decoration: none; transition: .18s ease; }
.evidence-card:hover { transform: translateY(-2px); border-color: var(--line-bright); box-shadow: 0 18px 38px rgba(0,0,0,.18); }
.evidence-card img { width: 100%; height: 126px; display: block; object-fit: cover; object-position: center; background: #fff; }
.evidence-card > div { display: grid; gap: 4px; padding: 12px; }
.evidence-card strong { font-size: 10px; }
.evidence-card span { color: var(--muted); font-size: 8px; line-height: 1.45; }
.evidence-card.wide { grid-column: auto; display: block; }
.evidence-card.wide img { height: 126px; }
.evidence-card.wide > div { align-content: center; }
.metrics-note { margin: 12px 0 0; padding: 11px 13px; border-left: 2px solid var(--blue); border-radius: 7px; color: var(--muted); background: rgba(81,167,255,.045); font-size: 9px; line-height: 1.55; }
.metrics-note strong { color: #c9d7e2; }

.history-section { margin-top: 0; }
.history-heading { display: flex; align-items: end; justify-content: space-between; margin-bottom: 15px; }
.history-heading .kicker { margin-bottom: 7px; }
.history-heading h2 { margin: 0; font-size: 21px; letter-spacing: -.03em; }
.history-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.history-card { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: rgba(11,25,41,.62); }
.history-card > div { display: grid; gap: 4px; }
.history-card strong { font: 750 16px ui-monospace, monospace; letter-spacing: .08em; }
.history-card small { color: var(--muted); font-size: 8px; }
.history-card span { color: var(--aqua); font: 700 9px ui-monospace, monospace; }
.history-empty { grid-column: 1 / -1; padding: 18px; border: 1px dashed var(--line); border-radius: 12px; color: var(--muted); font-size: 10px; text-align: center; }
.guide-section { min-height: 560px; }
.guide-heading .evidence-link { cursor: pointer; }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.guide-card { display: grid; grid-template-columns: auto 1fr; gap: 14px; padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(145deg, rgba(13,28,45,.86), rgba(8,19,32,.9)); }
.guide-card > span { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid var(--line-bright); border-radius: 10px; color: var(--aqua); font: 800 10px ui-monospace, monospace; }
.guide-card small { color: var(--aqua); font: 700 8px ui-monospace, monospace; letter-spacing: .1em; }
.guide-card h3 { margin: 7px 0 8px; font-size: 14px; }
.guide-card p { min-height: 62px; margin: 0 0 13px; color: var(--muted); font-size: 9px; line-height: 1.65; }
.guide-card p b { color: #d4e1e9; }
.guide-card strong { color: var(--aqua); font-size: 9px; }
.reading-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; align-items: center; gap: 14px; margin-top: 14px; padding: 20px; }
.reading-flow > div { display: grid; grid-template-columns: auto 1fr; column-gap: 10px; align-items: center; }
.reading-flow span { grid-row: span 2; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; color: #06131b; background: var(--aqua); font-size: 9px; font-weight: 800; }
.reading-flow strong { font-size: 11px; }
.reading-flow small { color: var(--muted); font-size: 8px; line-height: 1.4; }
.reading-flow > i { width: 24px; height: 1px; background: var(--line-bright); }
.guide-note { margin-top: 12px; padding: 13px 15px; border-left: 2px solid var(--amber); border-radius: 8px; color: var(--muted); background: rgba(255,198,109,.045); font-size: 9px; }
.guide-note strong { color: var(--amber); }
.team-section { min-height: 560px; }
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.team-card { display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: center; min-height: 170px; padding: 22px; border: 1px solid var(--line); border-radius: 17px; background: linear-gradient(145deg, rgba(13,28,45,.88), rgba(8,19,32,.92)); }
.team-card > span { width: 58px; height: 58px; display: grid; place-items: center; border: 1px solid var(--line-bright); border-radius: 17px; color: #04151a; background: linear-gradient(145deg, var(--aqua), var(--blue)); font-size: 15px; font-weight: 800; }
.team-card small, .team-project small { color: var(--aqua); font: 700 8px ui-monospace, monospace; letter-spacing: .12em; }
.team-card h3 { margin: 6px 0; font-size: 18px; }
.team-card p { margin: 0; color: var(--muted); font-size: 9px; line-height: 1.55; }
.team-project { display: grid; grid-template-columns: 300px 1fr; align-items: center; gap: 30px; margin-top: 14px; padding: 22px; }
.team-project h3 { margin: 6px 0 0; font-size: 16px; }
.team-project p { margin: 0; color: var(--muted); font-size: 10px; line-height: 1.7; }
.tech-strip { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 32px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.tech-strip > div { display: flex; align-items: center; gap: 13px; padding: 18px; border-left: 1px solid var(--line); }
.tech-strip > div:first-child { border-left: 0; }
.tech-strip span { color: var(--aqua); font: 700 10px ui-monospace, monospace; }
.tech-strip p { display: grid; gap: 3px; margin: 0; color: var(--muted); font-size: 8px; }
.tech-strip strong { color: #cbd7e1; font-size: 10px; }
footer { width: min(1240px, calc(100% - 40px)); display: flex; align-items: center; justify-content: space-between; margin: 0 auto; padding: 24px 0 34px; color: var(--muted); font-size: 9px; }
footer > div:first-child { display: flex; gap: 9px; }
footer strong { color: #c8d4de; }
.footer-links { display: flex; gap: 18px; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--aqua); }
.toast { position: fixed; z-index: 50; left: 50%; bottom: 25px; transform: translate(-50%, 20px); padding: 10px 14px; border: 1px solid var(--line-bright); border-radius: 10px; background: rgba(6,18,30,.94); color: #dce7ef; box-shadow: var(--shadow); opacity: 0; pointer-events: none; font-size: 10px; transition: .2s ease; }
.toast.show { transform: translate(-50%, 0); opacity: 1; }

@media (max-width: 980px) {
  .topbar { height: auto; min-height: 76px; flex-wrap: wrap; gap: 8px; padding-top: 10px; padding-bottom: 10px; }
  .app-tabs { order: 3; width: 100%; justify-content: center; }
  .intro { grid-template-columns: 1fr; }
  .model-card { max-width: 440px; }
  .app-grid { grid-template-columns: 1fr; }
  .control-column { grid-template-columns: 1.15fr .85fr; align-items: stretch; }
  .analyze-button, .model-status { grid-column: 1 / -1; }
  .history-list { grid-template-columns: repeat(2, 1fr); }
  .metric-card-grid, .evidence-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-grid { grid-template-columns: 1fr; }
  .settings-strip { grid-template-columns: repeat(2, 1fr); }
  .settings-strip-title { grid-column: 1 / -1; }
  .team-grid { grid-template-columns: 1fr; }
  .reading-flow { grid-template-columns: 1fr 1fr; }
  .reading-flow > i { display: none; }
}
@media (max-width: 680px) {
  .topbar { height: 66px; padding: 0 14px; }
  .system-pill span { display: none; }
  .system-pill { padding: 9px; }
  .model-link { padding: 7px; }
  .model-link > span { width: 18px; height: 18px; }
  .app-tabs { justify-content: flex-start; overflow-x: auto; }
  .app-tab { flex: 0 0 auto; }
  .page-shell { width: min(100% - 20px, 1240px); padding-top: 38px; }
  .intro { gap: 24px; margin-bottom: 25px; }
  .control-column, .result-grid { grid-template-columns: 1fr; }
  .viewer-toolbar { align-items: flex-start; flex-direction: column; }
  .viewer-actions { width: 100%; justify-content: space-between; }
  .canvas-wrap { min-height: 320px; }
  .metric-strip { grid-template-columns: repeat(2, 1fr); }
  .metric-strip div:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .metric-strip div:nth-child(4) { border-top: 1px solid var(--line); }
  .history-list { grid-template-columns: 1fr; }
  .performance-heading, .chart-header, .evidence-heading { align-items: flex-start; flex-direction: column; }
  .metric-card-grid, .evidence-grid { grid-template-columns: 1fr; }
  .evidence-card.wide { grid-column: auto; display: block; }
  .metric-bars > div { grid-template-columns: 72px 1fr 42px; gap: 8px; }
  .chart-axis { margin-left: 80px; margin-right: 50px; }
  .tech-strip { grid-template-columns: 1fr; }
  .tech-strip > div { border-left: 0; border-top: 1px solid var(--line); }
  .reading-flow { grid-template-columns: 1fr; }
  .settings-strip { grid-template-columns: 1fr; }
  .settings-strip-title { grid-column: auto; }
  .team-project { grid-template-columns: 1fr; gap: 10px; }
  .tech-strip > div:first-child { border-top: 0; }
  footer { width: calc(100% - 20px); align-items: flex-start; gap: 18px; }
  footer > div:first-child { flex-direction: column; gap: 3px; }
}