:root{
  color-scheme:dark;
  --bg:#070b13;
  --panel:#0f1726;
  --panel2:#121d30;
  --text:#eef4ff;
  --muted:#9ba9bf;
  --line:#24324a;
  --accent:#6ee7ff;
  --accent2:#8b5cf6;
  --danger:#ff6b7a;
  --ok:#53e3a6;
  --warn:#ffcc66;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:
    radial-gradient(circle at 15% 0%,rgba(110,231,255,.12),transparent 28rem),
    radial-gradient(circle at 90% 12%,rgba(139,92,246,.12),transparent 26rem),
    var(--bg);
  color:var(--text);
  min-height:100vh;
}
.shell{width:min(920px,calc(100% - 28px));margin:0 auto;padding:26px 0 40px}
.brand{display:flex;align-items:center;gap:14px;margin:0 0 22px}
.brand-mark{
  width:48px;height:48px;border-radius:15px;display:grid;place-items:center;
  font-weight:900;font-size:24px;color:#04101b;
  background:linear-gradient(135deg,var(--accent),#b8f5ff);
  box-shadow:0 12px 36px rgba(110,231,255,.18)
}
.brand h1{font-size:clamp(20px,4vw,30px);margin:2px 0 0;letter-spacing:-.02em}
.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--accent);font-weight:800}
.card{
  background:linear-gradient(180deg,rgba(18,29,48,.98),rgba(13,21,35,.98));
  border:1px solid var(--line);
  border-radius:22px;
  padding:clamp(18px,4vw,30px);
  box-shadow:0 22px 70px rgba(0,0,0,.28)
}
.card h2{margin-top:0;font-size:clamp(22px,4vw,32px);letter-spacing:-.02em}
.card p{color:#c9d4e6;line-height:1.65}
.notice,.warning{
  padding:14px 16px;border-radius:14px;margin:18px 0;
  background:rgba(110,231,255,.08);border:1px solid rgba(110,231,255,.22);
  color:#dff9ff;line-height:1.55
}
.warning{background:rgba(255,204,102,.09);border-color:rgba(255,204,102,.28);color:#ffe9b2}
.field{display:block;margin:18px 0}
.field span{display:block;font-size:13px;color:var(--muted);font-weight:700;margin-bottom:8px}
.field input{
  width:100%;padding:14px 15px;border:1px solid var(--line);border-radius:12px;
  background:#09111e;color:var(--text);font-size:16px;outline:none
}
.field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(110,231,255,.08)}
.consent{display:flex;align-items:flex-start;gap:12px;padding:16px;border:1px solid var(--line);border-radius:14px;background:#0a1320}
.consent input{width:20px;height:20px;margin-top:3px;accent-color:#5fd9f0;flex:0 0 auto}
.consent span{color:#cbd6e8;line-height:1.55;font-size:14px}
.researcher{font-size:13px;color:var(--muted);margin:14px 0 22px}.dot{margin:0 7px}
button{
  border:0;border-radius:12px;padding:13px 18px;font-weight:800;font-size:15px;cursor:pointer
}
button:disabled{opacity:.45;cursor:not-allowed}
.primary{background:linear-gradient(135deg,var(--accent),#74b9ff);color:#05111c}
.secondary{background:#17243a;color:#e8f1ff;border:1px solid #2b3c59}
.error{color:#ffd6dc;background:rgba(255,107,122,.1);border:1px solid rgba(255,107,122,.25);padding:12px;border-radius:10px}
.hidden{display:none!important}
.session-line{display:flex;justify-content:space-between;gap:15px;color:var(--muted);font-size:13px;margin-bottom:14px}
.session-line strong{color:var(--text);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.camera-frame{
  position:relative;overflow:hidden;border-radius:20px;border:1px solid #263750;background:#02050a;
  aspect-ratio:16/9;display:grid;place-items:center
}
.camera-frame video{width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}
.guide{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none}
.face-oval{height:65%;aspect-ratio:.73;border:2px solid rgba(110,231,255,.75);border-radius:50%;box-shadow:0 0 0 9999px rgba(0,0,0,.16)}
.record-badge{position:absolute;left:14px;top:14px;background:#e52b3c;padding:8px 10px;border-radius:999px;font-weight:900;font-size:12px;letter-spacing:.08em}
.step-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:20px}
.step-head h2{margin:4px 0 0}
.status-pill{font-size:11px;font-weight:900;letter-spacing:.08em;padding:8px 10px;border-radius:999px;background:#233047;color:#aebbd0;white-space:nowrap}
.status-pill.ok{background:rgba(83,227,166,.12);color:var(--ok);border:1px solid rgba(83,227,166,.25)}
.instruction{font-size:16px;margin:14px 0}
.camera-info{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:12px;border-top:1px solid var(--line);padding-top:12px}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.progress{height:9px;border-radius:999px;background:#18243a;overflow:hidden;margin-top:18px}
.progress div{height:100%;width:0;background:linear-gradient(90deg,var(--accent),var(--accent2));transition:width .2s}
.message{font-size:13px;min-height:20px;margin:12px 0 0}
.steps{display:grid;grid-template-columns:repeat(8,1fr);gap:7px;margin-top:18px}
.step-dot{height:5px;border-radius:10px;background:#24334d}
.step-dot.current{background:var(--accent)}
.step-dot.done{background:var(--ok)}
.done{text-align:center}.done-icon{width:74px;height:74px;border-radius:50%;display:grid;place-items:center;margin:0 auto 18px;background:rgba(83,227,166,.13);border:1px solid rgba(83,227,166,.3);color:var(--ok);font-size:34px;font-weight:900}
.subject-box{display:inline-block;padding:12px 16px;background:#0a1320;border:1px solid var(--line);border-radius:12px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
footer{text-align:center;color:#66748b;font-size:12px;padding:24px 0 0}
@media(max-width:640px){
  .shell{width:min(100% - 18px,920px);padding-top:14px}
  .card{border-radius:17px}
  .step-head{align-items:flex-start}
  .camera-info{display:block}.camera-info span{display:block;margin:4px 0}
}