:root{--bg: #0b0f14;--panel: #131c27;--text: #e6edf3;--muted: #94a3b8;--accent: #2dd4bf;--danger: #ff5252}*{box-sizing:border-box}html,body{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased}[hidden]{display:none!important}.brand{font-weight:800;letter-spacing:.22em;text-transform:uppercase;font-size:.8rem;color:var(--accent)}.landing{display:grid;place-items:center;min-height:100dvh;padding:24px;background:radial-gradient(900px 600px at 15% -10%,rgba(45,212,191,.16),transparent 60%),radial-gradient(700px 500px at 100% 100%,rgba(56,189,248,.12),transparent 60%),var(--bg)}.landing__inner{width:min(560px,100%);background:var(--panel);border:1px solid rgba(148,163,184,.16);border-radius:20px;padding:40px 32px;box-shadow:0 30px 60px #00000073}.eyebrow{margin:0 0 12px;font-weight:800;letter-spacing:.24em;text-transform:uppercase;font-size:.8rem;color:var(--accent)}h1{margin:0 0 12px;font-size:clamp(1.7rem,5vw,2.4rem);line-height:1.1}.lead{margin:0 0 28px;color:var(--muted);line-height:1.55}.cta{width:100%;padding:16px 20px;border:0;border-radius:12px;background:var(--accent);color:#04201d;font-size:1rem;font-weight:700;cursor:pointer;transition:transform .15s ease,filter .15s ease}.cta:hover{filter:brightness(1.08)}.cta:active{transform:scale(.99)}.facts{margin:28px 0 0;padding:0;list-style:none;display:grid;gap:8px;color:var(--muted);font-size:.9rem}.facts li:before{content:"•";color:var(--accent);margin-right:8px}.detection{height:100dvh}.stage{position:relative;width:100%;height:100dvh;overflow:hidden;background:#000}#video{display:block;width:100%;height:100%;object-fit:cover;background:#000}#overlay{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.topbar{position:absolute;top:0;left:0;right:0;display:flex;align-items:center;gap:12px;padding:max(12px,env(safe-area-inset-top)) 16px 24px;background:linear-gradient(to bottom,rgba(0,0,0,.62),transparent)}.ghost{width:40px;height:40px;display:grid;place-items:center;border-radius:999px;border:1px solid rgba(255,255,255,.28);background:#00000059;color:#fff;font-size:1.1rem;line-height:1;cursor:pointer}.ghost:disabled{opacity:.45;cursor:default}#flip{margin-left:auto}.bottombar{position:absolute;left:0;right:0;bottom:0;padding:24px 16px max(16px,env(safe-area-inset-bottom));background:linear-gradient(to top,rgba(0,0,0,.68),transparent)}.status,.perf{margin:0;font-size:.9rem;text-shadow:0 1px 3px rgba(0,0,0,.8)}.status[data-kind=error]{color:var(--danger);font-weight:600}.status[data-kind=info]{color:#fff}.perf{margin-top:4px;color:var(--muted);font-variant-numeric:tabular-nums}