:root{color-scheme:dark;--panel: rgba(9, 14, 35, .54);--panel-border: rgba(168, 184, 255, .14);--text-main: #eef2ff;--text-muted: rgba(222, 231, 255, .72);--accent: #8f7dff;--accent-cyan: #67c6ff}*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;font-family:Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:transparent}body:after{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:1;pointer-events:none;background-image:linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);background-size:72px 72px;-webkit-mask-image:radial-gradient(circle at center,black 32%,transparent 90%);mask-image:radial-gradient(circle at center,black 32%,transparent 90%)}.video-background{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;overflow:hidden;background:transparent}.bg-video{width:100%;height:100%;object-fit:cover}.video-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at top,rgba(210,255,194,.06),transparent 34%),radial-gradient(circle at 20% 20%,rgba(151,255,188,.05),transparent 30%),linear-gradient(180deg,#ffffff0a,#0c181214)}.webgl{position:relative;z-index:2;display:block;width:100%;height:100%;cursor:crosshair}.hud{position:fixed;top:24px;left:24px;z-index:3;max-width:min(460px,calc(100vw - 32px));padding:18px 20px;border:1px solid var(--panel-border);border-radius:18px;background:var(--panel);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 24px 60px #00000047}.eyebrow{margin:0 0 10px;color:var(--accent-cyan);letter-spacing:.18em;text-transform:uppercase;font-size:12px}.hud h1{margin:0;font-size:clamp(28px,5vw,46px);line-height:1.05;color:var(--text-main)}.description{margin:14px 0 0;color:var(--text-muted);line-height:1.6;font-size:14px}.status{margin:12px 0 0;color:#8f7dfff2;font-size:12px;line-height:1.5}.camera-panel{position:fixed;right:24px;bottom:24px;z-index:3;width:min(240px,calc(100vw - 32px));padding:10px;border:1px solid var(--panel-border);border-radius:18px;background:#070a1ab3;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:0 24px 60px #0000003d}.camera-feed{display:block;width:100%;aspect-ratio:4 / 3;object-fit:cover;border-radius:12px;transform:scaleX(-1);background:linear-gradient(180deg,#18214abf,#0a0a18eb)}.camera-label{margin-top:8px;color:var(--text-muted);font-size:11px;letter-spacing:.12em;text-transform:uppercase}@media(max-width:640px){.hud{top:14px;left:14px;right:14px;max-width:none;padding:16px}.description{font-size:13px}.camera-panel{right:14px;bottom:14px;width:160px;padding:8px}}