*{box-sizing:border-box} :root{color-scheme:light;--paper:#f5f4ef;--ink:#203b32;--muted:#748078;--line:#d9ded6;--green:#315a4b} body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.6}button,input{font:inherit}button{cursor:pointer;touch-action:manipulation}button:disabled{opacity:.4;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #d0a263;outline-offset:4px}svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round}.symbols{position:absolute;width:0;height:0;overflow:hidden}.topbar{height:88px;max-width:1240px;margin:auto;padding:0 40px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.brand{display:flex;gap:12px;align-items:center;color:inherit;text-decoration:none;font-weight:600;letter-spacing:2px}.brand svg{width:30px;height:30px}.edition{font-size:12px;letter-spacing:2px;color:var(--muted)}main{max-width:1100px;margin:auto;padding:46px 40px 30px}.intro{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:26px}.eyebrow{font-size:10px;letter-spacing:3px;font-weight:600;color:var(--muted);margin:0 0 8px}h1{font-size:36px;letter-spacing:2px;font-weight:500;margin:0 0 8px}.intro p:not(.eyebrow){margin:0;color:#778078;font-size:14px}.local-note{font-size:11px;color:var(--muted);white-space:nowrap;margin:0 0 4px 16px}.local-note i{display:inline-block;width:6px;height:6px;border-radius:50%;background:#6f927e;margin-right:7px}.viewer{background:#13251e;border-radius:14px;overflow:hidden;box-shadow:0 14px 35px #203b3210}.stage{position:relative;aspect-ratio:16/9;background:#101a16;display:flex;align-items:center;justify-content:center}.stage video{display:block;width:100%;height:100%;object-fit:contain}.stage-top{position:absolute;inset:16px 16px auto;display:flex;justify-content:space-between;align-items:center;pointer-events:none}.stage-label{color:white;background:#16332585;border:1px solid #ffffff35;backdrop-filter:blur(8px);border-radius:30px;padding:4px 12px;font-size:11px;letter-spacing:2px}.icon-button{display:grid;place-items:center;width:44px;height:44px;border:1px solid #ffffff55;background:#18312565;color:white;border-radius:50%;pointer-events:auto}.start-button{display:flex;gap:12px;align-items:center;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);border:1px solid #ffffff80;color:white;background:#1f3b2ed9;padding:14px 24px;border-radius:32px;font-size:14px;backdrop-filter:blur(10px);white-space:nowrap}.start-button[hidden]{display:none}.start-button span{font-size:12px}.capture-wrap{position:absolute;right:25px;bottom:20px;display:flex;align-items:center;gap:8px;flex-direction:column;color:#fff;font-size:10px;letter-spacing:2px;text-shadow:0 1px 6px black}.capture-button{border:1px solid #fff9;border-radius:50%;width:64px;height:64px;display:grid;place-items:center;background:#fff;color:var(--ink);outline:5px solid #ffffff3b;outline-offset:3px;box-shadow:0 4px 16px #0003}.capture-button svg{width:28px;height:28px}.capture-button:active{transform:scale(.93)}.controls{padding:13px 18px;display:flex;gap:13px;align-items:center;color:#fff}.control-button{min-height:40px;border:0;background:transparent;color:#e1e9e0;font-size:12px;padding:4px;white-space:nowrap}.time{font-size:11px;font-variant-numeric:tabular-nums;color:#bacbbf}input[type=range]{accent-color:#e3e9d6;flex:1;min-width:40px;height:24px}.video-status{margin:0;padding:0 20px 10px;font-size:11px;color:#b9cabf}.video-status:empty{display:none}.under-player{display:flex;justify-content:space-between;gap:14px;padding:16px 0 28px;color:var(--muted);font-size:12px}.under-player strong{font-size:14px;color:var(--ink);margin:0 3px;font-weight:500}.section-heading{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:14px}.section-heading h2{font-size:16px;font-weight:500;margin:0}.section-heading h2 span{font-family:monospace;font-size:12px;color:var(--muted);margin-left:12px}.section-heading>span{font-size:11px;color:var(--muted)}.gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;padding:20px 0 30px}.empty{grid-column:1/-1;padding:22px 0;margin:0;text-align:center;font-size:12px;color:#8a938b}.photo-card{padding:0;border:0;text-align:left;background:transparent;color:var(--ink)}.photo-card img{display:block;width:100%;aspect-ratio:16/9;object-fit:contain;background:#182b22;border-radius:8px}.photo-card span{display:flex;justify-content:space-between;font-size:11px;margin-top:8px;color:var(--muted)}.research{border-top:1px solid var(--line);padding:16px 0;font-size:12px;color:var(--muted)}summary{cursor:pointer}.research-body{padding:15px 0;max-width:750px}.research input:not([type=file]){display:block;border:1px solid var(--line);border-radius:6px;padding:8px 10px;margin-top:6px;background:#fff;width:100%;max-width:330px}.actions{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.file-label{display:block}.file-label input{display:block;margin-top:8px;font-size:12px;max-width:100%}.small{font-size:11px}footer{max-width:1020px;margin:0 auto 25px;border-top:1px solid var(--line);padding-top:20px;text-align:center;color:#939b92;font-size:11px;letter-spacing:2px}#toast:not(:empty){position:fixed;bottom:max(24px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);z-index:30;background:#254334;color:#fff;letter-spacing:0;border-radius:10px;padding:12px 20px;box-shadow:0 5px 25px #0002;max-width:90vw;width:max-content}.flash{position:absolute;inset:0;background:white;opacity:0;pointer-events:none}.flash.active{animation:flash .24s ease-out}@keyframes flash{0%{opacity:.65}100%{opacity:0}}dialog{border:0;border-radius:18px;padding:25px;width:min(560px,calc(100vw - 28px));max-height:90vh;max-height:90dvh;overflow:auto;color:var(--ink);background:var(--paper);box-shadow:0 20px 100px #0005}dialog::backdrop{background:#11261fcc;backdrop-filter:blur(4px)}.dialog-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.dialog-heading h2{font-size:22px;font-weight:500;margin:0}.close{width:44px;height:44px;border:1px solid var(--line);background:transparent;border-radius:50%;font-size:26px;line-height:1;color:var(--ink)}#photoPreview{display:block;width:100%;border-radius:10px;-webkit-touch-callout:default;user-select:auto;pointer-events:auto}.photo-meta{font-size:12px;color:var(--muted)}.save-actions{display:flex;gap:10px}.primary,.secondary{border-radius:8px;padding:11px 16px;min-height:44px;font-size:12px;border:1px solid var(--line);background:transparent;color:var(--ink)}.primary{background:var(--green);border-color:var(--green);color:#fff;flex:1}.save-help,.save-status{font-size:12px;line-height:1.8;color:var(--muted)}.save-status{color:var(--green)}.text-button{display:block;padding:12px;margin:6px auto 0;border:0;background:transparent;color:var(--ink);font-size:13px}.viewer.expanded{position:fixed;inset:0;z-index:20;border-radius:0;display:flex;flex-direction:column;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}.viewer.expanded .stage{flex:1;min-height:0;aspect-ratio:auto}.viewer.expanded video{position:absolute;inset:0}.viewer.expanded .controls{flex:none}body.expanded{overflow:hidden}@media(max-width:650px){.topbar{height:68px;padding:0 22px}.edition{font-size:10px;letter-spacing:1px}main{padding:28px 18px 15px}.intro{margin-bottom:22px}.intro h1{font-size:29px}.intro p:not(.eyebrow){font-size:12px}.local-note{display:none}.stage-top{inset:10px 10px auto}.stage-label{font-size:9px;padding:2px 9px}.icon-button{width:38px;height:38px}.icon-button svg{width:18px}.capture-wrap{right:18px;bottom:15px;gap:5px;font-size:9px}.capture-button{width:46px;height:46px;outline-width:3px;outline-offset:2px}.capture-button svg{width:24px;height:24px}.controls{padding:7px 12px;gap:8px}.time{font-size:10px}.under-player{font-size:10px;padding-bottom:25px}.gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.start-button{padding:10px 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.section-heading select{font:inherit;font-size:11px;color:var(--muted);border:1px solid var(--line);background:transparent;border-radius:6px;padding:6px}.storage-alert{padding:12px 15px;background:#fff0d9;color:#795719;border-radius:8px;font-size:12px}.export-link{display:block;margin:8px 0 20px;color:var(--green);font-weight:600}.export-link[hidden]{display:none}

main{max-width:1160px;padding-top:28px}.topbar{height:72px}h1{font-size:30px}.intro{margin-bottom:20px}.participant-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:0 0 18px;font-size:12px;color:var(--muted)}.participant-bar label{white-space:nowrap}.participant-bar input{font:inherit;padding:8px 12px;border:1px solid var(--line);border-radius:6px;background:#fff;margin-left:8px;width:190px}.participant-bar p{margin:0}.viewer{max-width:960px;margin:auto}.stage{max-height:54vh;aspect-ratio:16/9}.viewer.expanded .stage{max-height:none}.under-player{padding:14px 0 10px}.upload-summary{display:flex;align-items:center;gap:12px;margin-bottom:26px;min-height:40px;font-size:12px;color:var(--muted)}.upload-summary p{flex:1;margin:0}.upload-summary .primary{flex:none;padding:9px 18px}.upload-summary button[hidden]{display:none}.photo-card{align-self:start}.photo-card .photo-upload{margin-top:3px;display:block;font-size:11px;color:#738678}.photo-card[data-state=failed] .photo-upload{color:#b26737}.photo-card[data-state=pending] .photo-upload,.photo-card[data-state=uploading] .photo-upload{color:#927b47}.photo-card img{box-shadow:0 2px 12px #203b3210}.gallery{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.gallery .empty{padding:32px 0}footer a{color:var(--muted);font-size:10px;margin-left:15px;letter-spacing:0}.storage-alert[hidden]{display:none}.research-layout{display:grid;grid-template-columns:300px 1fr;gap:24px}.session-list{display:flex;flex-direction:column;gap:8px}.session-item{text-align:left;padding:14px;background:white;border:1px solid var(--line);border-radius:8px;color:var(--ink)}.session-item.active{border-color:var(--green);background:#e7ede5}.session-item span{display:block;color:var(--muted);font-size:11px}.research-gallery{grid-template-columns:repeat(3,minmax(0,1fr))}.research-toolbar{display:flex;gap:12px;align-items:center;margin:24px 0}.research-toolbar input{padding:10px;border:1px solid var(--line);border-radius:7px;flex:1;min-width:100px}.research-toolbar a{font-size:12px;color:var(--green)}.research-banner{background:#fff;padding:20px;border:1px solid var(--line);border-radius:10px}.research-banner a{color:var(--green)}@media(min-width:1000px){.capture-wrap{right:30px;bottom:24px}}@media(max-width:700px){.participant-bar{display:block}.participant-bar p{margin-top:10px}.stage{max-height:none}.upload-summary{flex-wrap:wrap}.upload-summary p{min-width:100%}.gallery{grid-template-columns:repeat(2,minmax(0,1fr))}.research-layout{grid-template-columns:1fr}.session-list{max-height:240px;overflow:auto}}

/* Experiment steps and comment composition. */
[hidden]{display:none!important}.workflow-steps{list-style:none;display:flex;gap:28px;margin:0 0 26px;padding:0 0 16px;border-bottom:1px solid var(--line);color:var(--muted);font-size:12px;letter-spacing:1px}.workflow-steps li[aria-current=step]{color:var(--green);font-weight:650}.controls progress{flex:1;min-width:40px;appearance:none;height:6px;border:0;background:#496352;border-radius:5px;pointer-events:none}.controls progress::-webkit-progress-bar{background:#496352;border-radius:5px}.controls progress::-webkit-progress-value{background:#e3e9d6;border-radius:5px}.controls progress::-moz-progress-bar{background:#e3e9d6;border-radius:5px}.preparation-status{display:flex;align-items:center;gap:12px;padding:8px 0 14px;color:var(--muted);font-size:12px}.preparation-status progress{width:110px;height:6px;accent-color:var(--green)}.workflow-steps+section .intro{margin-top:4px}.selectable-photo{padding:8px;border:2px solid transparent;border-radius:12px;transition:background .15s,border-color .15s}.selectable-photo[aria-pressed=true]{border-color:var(--green);background:#e8eee5}.selection-mark{display:block;margin-top:8px;font-size:12px;color:var(--green);font-weight:500}.comment-editor{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px}.comment-editor label{display:block;margin-bottom:12px;font-size:16px;font-weight:500}.comment-editor label span{margin-left:8px;color:var(--muted);font-size:11px;font-weight:400}textarea{font:inherit;width:100%;resize:vertical;min-height:180px;padding:14px;border:1px solid var(--line);border-radius:8px;background:#fbfcf9;color:var(--ink);line-height:1.8}textarea:focus-visible{outline:2px solid var(--green);outline-offset:2px}.comment-meta{display:flex;justify-content:space-between;gap:16px;margin-top:10px;color:var(--muted);font-size:11px}.review-attachments{margin:24px 0}.review-attachments h2,.submitted-comment h2{font-size:15px;font-weight:500}.attachment-list{display:flex;flex-wrap:wrap;gap:12px}.attachment{width:140px;font-size:11px;color:var(--muted)}.attachment img{width:100%;aspect-ratio:16/9;object-fit:contain;background:#14271e;border-radius:6px}.attachment span{display:block}.review-submit{display:flex;align-items:center;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding:20px 0}.review-submit p{font-size:12px;color:var(--muted)}.review-submit .primary{flex:none;min-width:150px}.completion-panel{max-width:850px;margin:40px auto}.completion-panel>h1{margin-top:8px}.submitted-comment{background:white;border:1px solid var(--line);padding:22px;border-radius:10px;margin-top:30px}#submittedText{white-space:pre-wrap;overflow-wrap:anywhere;margin:0;line-height:1.9}#doneReceipt{overflow-wrap:anywhere;color:var(--muted)}.comment-editor:focus-within{border-color:#819b87}@media(max-width:650px){.workflow-steps{gap:12px;font-size:10px;letter-spacing:0}.comment-editor{padding:15px}.preparation-status{flex-wrap:wrap}.review-submit{align-items:stretch;flex-direction:column}.comment-meta{font-size:10px}.review-submit p{margin:0}.completion-panel{margin-top:25px}.selection-mark{font-size:11px}}

/* Participant entry and a quieter viewing page. */
.entry-panel{max-width:520px;margin:55px auto 90px}.entry-panel h1{font-size:28px;margin-bottom:30px}.entry-form{display:flex;flex-direction:column;gap:22px}.entry-field label{display:block;margin-bottom:9px;font-size:14px}.entry-field input{display:block;width:100%;min-height:50px;padding:12px 14px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink)}.entry-form .primary{margin-top:6px;min-height:48px;font-size:14px}.entry-form .storage-alert{margin:0}.stage-top{justify-content:flex-end}.preparation-status{padding-top:18px}.upload-summary{justify-content:flex-end}.entry-panel~#watchStep .intro{margin-bottom:24px}@media(max-width:650px){.entry-panel{margin:30px auto 60px}.entry-panel h1{font-size:25px}}

/* Keep the constrained-height player centered on wide desktop windows. */
.stage{width:100%}.stage video{position:absolute;inset:0}