:root{color-scheme:light;--bg:#f6f7fb;--paper:#fff;--ink:#172338;--muted:#647186;--line:#e0e5ed;--blue:#355de3;--blue-light:#eef2ff;--green:#217859;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.65}button,a,input{font:inherit}button{cursor:pointer}button{color:inherit}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible{outline:3px solid #f2b345;outline-offset:3px}button,a{-webkit-tap-highlight-color:transparent}a{color:var(--blue)}[hidden]{display:none!important}
.topbar{height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 max(28px,calc((100vw - 1480px)/2));border-bottom:1px solid var(--line);background:var(--paper)}.brand{display:flex;align-items:center;gap:12px;font-size:14px;letter-spacing:2px}.brand b{font-weight:450;color:var(--muted)}.brand-mark{display:grid;place-items:center;width:34px;height:34px;background:var(--ink);color:white;font-size:34px;line-height:1;border-radius:8px;transform:rotate(-12deg)}.mode{padding:4px 12px;background:#f0f2f6;border:1px solid var(--line);border-radius:99px;color:var(--muted);font-size:12px}
main{max-width:1536px;margin:0 auto;padding:28px}.intro{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:23px}.eyebrow{color:var(--blue);font-size:11px;font-weight:700;letter-spacing:2px;margin:0 0 5px}h1{font-size:28px;letter-spacing:-.8px;line-height:1.35;margin:0 0 9px;font-weight:650}p{margin:0}.subtle{color:var(--muted)}.intro-side{text-align:right;min-width:150px}.progress-number{font-variant-numeric:tabular-nums;font-size:22px;font-weight:650}.progress-number small{font-size:13px;color:var(--muted);font-weight:400}.progress-track{height:4px;border-radius:4px;background:var(--line);margin-top:9px;overflow:hidden}.progress-track span{display:block;height:100%;background:var(--blue);transition:width .2s}
.steps{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:8px;margin-bottom:22px}.step{display:flex;align-items:center;justify-content:center;gap:10px;background:transparent;border:1px solid var(--line);border-radius:8px;padding:9px 6px;color:var(--muted);font-size:12px}.step b{font-size:14px;font-weight:600}.step.active{background:var(--ink);border-color:var(--ink);color:#fff}.step.complete:not(.active){background:#edf5f1;border-color:#d2e5da;color:var(--green)}
.study-panel{border:1px solid var(--line);border-radius:14px;background:var(--paper);overflow:hidden;box-shadow:0 3px 12px #17233803}.case-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px 15px}.case-title{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:650}.case-id{font-family:ui-monospace,monospace;color:var(--muted);font-size:12px;font-weight:400;padding:2px 7px;background:var(--bg);border-radius:4px}.toolbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.quiet{border:1px solid var(--line);border-radius:7px;background:white;padding:7px 12px;font-size:12px}.quiet:hover{background:var(--bg)}.toolbar-note{color:var(--muted);font-size:11px;margin-right:5px}.gallery{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px;padding:0 22px}.video-card{margin:0;border:1px solid var(--line);border-radius:9px;overflow:hidden;background:#f8f9fa;min-width:0}.video-card.reference{border-color:#abd3c0}.video-label{display:flex;justify-content:space-between;align-items:center;padding:7px 10px;background:#f4f6ff;color:#3456b8;font-size:11px}.video-label strong{font-size:15px}.reference .video-label{background:#eef7f1;color:var(--green)}.video-frame{position:relative;aspect-ratio:1;background:#fafafa}.video-frame video{width:100%;height:100%;object-fit:contain;display:block}.video-status{position:absolute;bottom:3px;left:3px;right:3px;text-align:center;font-size:10px;color:#566173;background:#fffd;pointer-events:none;border-radius:3px}.expand{position:absolute;top:5px;right:5px;display:grid;place-items:center;width:27px;height:27px;background:#fffe;border:1px solid #dfe4ec;border-radius:5px;opacity:0;transition:opacity .15s;font-size:18px}.video-card:hover .expand,.expand:focus-visible{opacity:1}.gallery-note{display:flex;gap:20px;color:var(--muted);font-size:11px;padding:12px 22px 18px}.dot{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:6px;background:var(--blue)}.dot.green{background:var(--green)}
.ranking-section{padding:0 22px}.ranking-intro{display:flex;justify-content:space-between;gap:14px;border-top:1px solid var(--line);padding:17px 0 6px;font-size:12px;color:var(--muted)}.ranking-intro strong{color:var(--ink);font-size:13px}.question{display:grid;grid-template-columns:34px minmax(0,1fr) 360px;gap:12px;align-items:center;padding:19px 0;border-bottom:1px solid var(--line)}.question:last-child{border-bottom:0}.q-index{font-size:12px;width:28px;height:28px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;color:var(--muted)}.q-title{font-size:14px;font-weight:550;line-height:1.65;margin:0}.q-title em{font-style:normal;color:var(--blue)}.q-caption{font-size:11px;color:var(--muted);margin-top:4px}.rank-controls{min-width:0}.rank-direction{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin-bottom:5px}.rank-choices{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}.choice{position:relative;display:flex;justify-content:center;align-items:center;gap:7px;min-height:42px;border:1px solid #d5ddea;border-radius:7px;background:#fff;font-size:16px;font-weight:600;touch-action:manipulation}.choice:hover{border-color:var(--blue);background:var(--blue-light)}.choice.selected{background:var(--blue-light);border-color:#c2d0fc;color:var(--blue)}.choice .rank{display:grid;place-items:center;min-width:17px;height:17px;border-radius:50%;font-size:10px;background:var(--blue);color:#fff}.choice .rank.empty{background:#eff1f5;color:#9aa4b3;font-weight:400}.rank-result{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:10px;color:var(--muted);margin-top:5px;min-height:23px}.text-button{padding:0 2px;border:0;background:transparent;color:var(--muted);font-size:11px;text-decoration:underline;text-underline-offset:3px}.question.invalid{background:#fff6f2}.question.invalid .q-caption{color:#b3422c}
.navigation{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:20px}.navigation-left{display:flex;align-items:center;gap:15px}.primary{background:var(--blue);color:white;border:1px solid var(--blue);padding:11px 24px;border-radius:8px;font-weight:550;font-size:13px}.primary:hover{background:#284ecb}.secondary{background:white;border:1px solid var(--line);padding:11px 18px;border-radius:8px;font-size:13px}.save-note{font-size:11px;color:var(--muted)}.error{color:#ad3c25;font-size:13px;margin-top:12px}.preview-note{font-size:11px;color:var(--muted);margin-top:18px;text-align:center}.page-footer{max-width:1480px;margin:0 auto;padding:22px 28px 28px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:#8490a0;font-size:10px;letter-spacing:.3px}.loading{padding:80px 0;text-align:center}.review{max-width:940px;margin:0 auto}.review h1{margin-top:20px}.review-table{width:100%;border-collapse:collapse;margin:24px 0;background:white;font-size:13px}.review-table th,.review-table td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line)}.review-table th{color:var(--muted);font-weight:500;background:#eef1f7}.review-table caption{text-align:left;margin-bottom:10px}.review-actions{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}.success-icon{font-size:30px;color:var(--green);background:#e6f2eb;width:60px;height:60px;display:grid;place-items:center;border-radius:50%;margin:32px 0 18px}.receipt{font-family:ui-monospace,monospace;font-size:12px;background:white;border:1px solid var(--line);padding:14px;margin-top:20px;overflow-wrap:anywhere}.consent{display:flex;gap:9px;align-items:start}.consent input{margin-top:6px}dialog{width:min(760px,94vw);padding:18px;border:1px solid var(--line);border-radius:14px;max-height:95vh}dialog::backdrop{background:#101a2eb3}.dialog-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.dialog-top h2{font-size:16px;margin:0}dialog video{display:block;width:100%;max-height:76vh;background:#fafafa}#toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);border-radius:8px;color:white;background:var(--ink);padding:10px 18px;display:none;font-size:12px;z-index:20;max-width:90vw}#toast.visible{display:block}
@media(min-width:1700px){.video-frame{aspect-ratio:1}.question{grid-template-columns:34px minmax(0,1fr) 400px}}
@media(max-width:1050px){.question{grid-template-columns:28px minmax(0,1fr) 310px;gap:9px}.gallery{gap:7px;padding:0 16px}.case-top{padding:18px 16px 13px}.ranking-section{padding:0 16px}.toolbar-note{display:none}}
@media(max-width:760px){.topbar{height:62px;padding:0 16px}.brand{font-size:12px;letter-spacing:1.5px}.brand-mark{height:29px;width:29px;font-size:28px}main{padding:20px 12px}.intro{align-items:start;gap:14px;margin-bottom:18px}h1{font-size:24px}.intro p.subtle{font-size:12px;max-width:265px}.intro-side{min-width:68px}.progress-number{font-size:19px}.eyebrow{font-size:9px;letter-spacing:1.5px}.steps{gap:5px;margin-bottom:16px}.step{padding:6px 0;flex-direction:column;gap:0;font-size:9px}.step b{font-size:12px}.case-top{padding:14px 12px 12px;align-items:start}.case-title{font-size:14px;gap:6px}.case-id{font-size:10px}.toolbar{gap:5px}.toolbar .quiet{font-size:10px;padding:6px 8px}.gallery{grid-template-columns:repeat(3,minmax(0,1fr));padding:0 10px;gap:8px}.video-label{padding:4px 7px;font-size:9px}.video-label strong{font-size:13px}.video-frame{aspect-ratio:1}.expand{opacity:1;width:23px;height:23px;top:3px;right:3px;font-size:14px}.gallery-note{gap:8px;justify-content:space-between;font-size:9px;padding:10px}.ranking-section{padding:0 12px}.ranking-intro{padding:13px 0 3px;display:block;font-size:10px}.ranking-intro strong{display:block;font-size:12px;margin-bottom:3px}.question{grid-template-columns:24px minmax(0,1fr);gap:7px;padding:14px 0}.q-index{width:23px;height:23px;font-size:10px;align-self:start;margin-top:2px}.q-title{font-size:12px}.q-caption{font-size:10px}.rank-controls{grid-column:2;max-width:100%}.choice{min-height:40px;font-size:14px;gap:6px}.rank-direction{font-size:9px}.rank-result{font-size:9px}.navigation{align-items:start;margin-top:15px}.navigation-left{flex-direction:column;align-items:start;gap:7px}.primary{padding:11px 18px}.save-note{font-size:10px}.page-footer{padding:17px 16px;gap:12px;font-size:9px}.preview-note{font-size:10px}.review-table{font-size:10px}.review-table th,.review-table td{padding:10px 5px}.review-table .style-cell{display:none}.review-actions{gap:8px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
/* Compact six-video panel for questionnaire embeds. */
.gallery-only{background:white}.gallery-only .topbar,.gallery-only .intro,.gallery-only .page-footer,.gallery-only .preview-note{display:none}.gallery-only main{padding:4px}.gallery-only .study-panel{border:0;box-shadow:none}.gallery-only .case-top{padding:6px 4px 10px;gap:6px}.gallery-only .case-title{font-size:13px}.gallery-only .gallery{grid-template-columns:repeat(6,minmax(0,1fr));padding:0;gap:5px}.gallery-only .video-label{padding:3px 5px}.gallery-only .video-label span{display:none}.gallery-only .gallery-note{padding:8px 0;font-size:10px;gap:8px}.gallery-only .quiet{padding:5px 7px;font-size:10px}.gallery-only .expand{opacity:1}.gallery-only .video-frame{aspect-ratio:1}
@media(max-width:480px){.gallery-only .gallery{grid-template-columns:repeat(3,minmax(0,1fr))}.gallery-only .gallery-note{font-size:9px}.gallery-only .case-id{display:none}}