:root{color-scheme:light;--bg:#f3f7f7;--panel:#fff;--soft:#edf4f3;--ink:#142c30;--muted:#597075;--line:#dce8e6;--accent:#087f77;--badge:#dff4ef;--shadow:0 12px 36px #123a3210}
:root[data-theme=dark]{color-scheme:dark;--bg:#0e171b;--panel:#162329;--soft:#1d2f35;--ink:#edf6f4;--muted:#a5babd;--line:#2b4147;--accent:#64d8c1;--badge:#203e39;--shadow:0 12px 36px #0002}
body{background:var(--bg);color:var(--ink)}.logo,.logo:visited,.logo:hover,.logo:active,nav a{color:var(--ink)}.nav{gap:24px}.nav nav{margin-left:auto}.theme-toggle{font:600 13px Inter,sans-serif;border:1px solid var(--line);border-radius:12px;padding:11px 16px;background:var(--soft);color:var(--ink);cursor:pointer;white-space:nowrap}.lab-hero{padding:36px 0 28px}.lab-hero h1{font-size:clamp(2.5rem,5vw,3.5rem);margin-bottom:12px}.lab-hero .eyebrow{color:var(--accent);font-size:11px;font-weight:700;letter-spacing:.14em}.lab-hero>p{color:var(--muted);font-size:15px;line-height:1.7}.workspace{gap:22px;grid-template-columns:minmax(0,1.8fr) minmax(300px,1fr)}.project-panel,.card{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);backdrop-filter:none;border-radius:20px}.camera-panel.project-panel{padding:16px}.camera{border-radius:14px}.camera,#placeholder{background:#11282d}#placeholder h2{font-size:27px}#placeholder p{color:#a7c9c8}.liquid-btn{background:var(--accent);color:var(--bg);box-shadow:none;animation:none}.toolbar .btn{border-radius:12px}.toolbar .btn-secondary,select{background:var(--soft);color:var(--ink);border:1px solid var(--line)}input{accent-color:var(--accent)}.options,#status,#photo-status,.card p,.card strong small,.capture-panel>p,.gesture-guide>p,.camera-help,.section-title span,.footer{color:var(--muted)}.gesture{background:var(--badge);color:var(--accent)}.card{padding:20px}.card-head{font-size:11px;letter-spacing:.08em}.card strong{font-size:46px}.demo{font-size:10px;color:var(--muted);font-weight:400;letter-spacing:0}.capture-panel.project-panel{margin-top:20px;padding:20px}.camera-help{border-color:var(--line)}.project-tags span{background:var(--soft);border:1px solid var(--line);color:var(--muted)}.gesture-guide.project-panel{padding:24px}.footer{padding:28px;text-align:center;border-top:1px solid var(--line)}.btn:focus-visible,select:focus-visible,input:focus-visible,a:focus-visible,button:focus-visible{outline-color:var(--accent)}
@media(max-width:800px){.workspace{grid-template-columns:minmax(0,1fr)}.lab-hero{padding-top:26px}.lab-hero>p{font-size:14px}.camera-panel.project-panel{padding:12px}.options{font-size:12px;gap:12px}.toolbar select{min-width:0;max-width:100%;font-size:16px}}
.empty{background:var(--soft);border-color:var(--line);color:var(--muted)}.capture{background:var(--panel);border-color:var(--line)}.capture a,.camera-help a{color:var(--accent)}

[hidden]{display:none!important}.mode-panel.project-panel{padding:18px 20px;margin-bottom:22px}.mode-switch{display:inline-flex;gap:6px;padding:5px;border:1px solid var(--line);background:var(--soft);border-radius:14px}.mode-switch button{padding:11px 20px;border:0;border-radius:10px;background:transparent;color:var(--muted);font:600 14px Inter,sans-serif;cursor:pointer;min-height:44px}.mode-switch button[aria-pressed=true]{background:var(--accent);color:var(--bg)}.mode-panel p{color:var(--muted);font-size:13px;line-height:1.7;margin-top:12px}#body-controls{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:16px}#body-controls label{font-size:13px;font-weight:600}#body-controls select{max-width:100%;min-width:0}#body-controls .btn{font:600 13px Inter,sans-serif;cursor:pointer}#exercise-hint{flex-basis:100%;margin-top:0}.body-summary{font-size:14px;line-height:1.7;color:var(--muted);margin-bottom:14px}.body-summary strong{display:inline;font-size:20px;letter-spacing:0}.body-stage{font-size:12px;color:var(--muted)}
@media(max-width:800px){.mode-panel.project-panel{padding:14px}.mode-switch{display:flex}.mode-switch button{flex:1;padding:10px 14px}#body-controls select{width:100%;font-size:16px}#body-controls .btn{min-height:44px}}
#body-controls .btn-secondary{background:var(--soft);color:var(--ink);border:1px solid var(--line)}

#face-controls{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:16px}#face-controls .btn{background:var(--soft);color:var(--ink);border:1px solid var(--line);font:600 13px Inter,sans-serif;cursor:pointer}#face-controls p{flex:1;min-width:200px;margin:0}.face-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.face-grid .card{margin:0;padding:14px;min-width:0;border-radius:16px}.face-grid .card-head{font-size:11px;line-height:1.5}.face-grid strong{font-size:32px;letter-spacing:-1px}.face-grid meter{width:100%;height:10px;margin-top:10px;accent-color:var(--accent)}.face-note{font-size:11px;line-height:1.7;color:var(--muted);margin-top:14px}
@media(max-width:800px){.mode-switch button{padding:10px 4px;min-width:0;font-size:12px}#face-controls .btn{min-height:44px}#face-controls p{min-width:0;flex-basis:100%}}