:root{color-scheme:dark;--bg: #111318;--card: #1c1d21;--line: #3c4043;--text: #e8eaed;--muted: #9aa0a6;--accent: #8ab4f8;--danger: #f28b82;--ctrl: #3c4043;font-family:Google Sans,Segoe UI,system-ui,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text)}button,input{font:inherit;color:inherit}button{background:var(--ctrl);border:0;border-radius:24px;padding:10px 16px;cursor:pointer}button:hover{filter:brightness(1.08)}button.primary{background:#8ab4f8;color:#202124;font-weight:600}button.ghost{background:transparent;border:1px solid var(--line)}input{background:#2b2c30;border:1px solid var(--line);border-radius:8px;padding:10px 12px;width:100%}.landing,.lobby{min-height:100%;display:grid;place-items:center;padding:24px;gap:24px}.lobby{grid-template-columns:minmax(280px,520px) minmax(280px,360px);align-items:center}@media(max-width:800px){.lobby{grid-template-columns:1fr}}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px;width:min(420px,100%);display:grid;gap:14px}.brand{display:flex;align-items:center;gap:12px;color:inherit;text-decoration:none;font-weight:700;letter-spacing:.02em}.brand img{width:72px;height:72px;border-radius:18px;object-fit:cover;background:#2b2c30}.brand.compact{gap:8px;font-size:14px;font-weight:600}.brand.compact img{width:32px;height:32px;border-radius:8px}.card-foot{margin:4px 0 0;text-align:center;font-size:13px}.card-foot a,.about-body a,.about-back a{color:var(--accent)}.about{min-height:100%;display:grid;justify-items:center;padding:32px 20px 64px;gap:24px}.about-head{width:min(680px,100%)}.about-body{width:min(680px,100%);display:grid;gap:12px}.about-body h1{font-size:36px}.about-body h2{margin:16px 0 0;font-size:20px}.about-body p,.about-body li{color:var(--muted);line-height:1.55}.about-body ol,.about-body ul{margin:0;padding-left:1.2em;display:grid;gap:8px}.about-body code{font-size:.92em;background:#2b2c30;padding:1px 6px;border-radius:4px}.diagram{margin:0;padding:14px 16px;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:auto;font-size:13px;line-height:1.45;color:var(--text)}.about-back{margin-top:12px}.eyebrow{color:var(--accent);letter-spacing:.08em;text-transform:uppercase;font-size:12px;margin:0}h1{margin:0;font-size:28px}.lede,.muted{color:var(--muted);margin:0}.error{color:var(--danger);margin:0}label{display:grid;gap:6px;font-size:13px;color:var(--muted)}.divider{text-align:center;color:var(--muted);font-size:13px}.join-row{display:flex;gap:8px}.pin{letter-spacing:.3em;text-align:center;font-size:22px}.preview-wrap{background:#000;border-radius:16px;overflow:hidden;aspect-ratio:16/10;display:grid;place-items:center}.preview,.tile-video{width:100%;height:100%;object-fit:cover;background:#000}.mirror{transform:scaleX(-1)}.lobby-actions{display:flex;flex-wrap:wrap;gap:8px}.meeting{height:100%;display:grid;grid-template-rows:auto 1fr auto}.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line);gap:12px}.topbar-left{display:flex;align-items:center;gap:12px;min-width:0}.meeting-body{display:grid;grid-template-columns:minmax(0,1fr) auto;min-height:0;position:relative;overflow:hidden}.video-grid{display:grid;gap:12px;padding:16px;min-height:0;min-width:0;align-content:center;overflow:hidden}.video-card{position:relative;background:#000;border-radius:12px;overflow:hidden;min-height:180px;aspect-ratio:16/9}.tile-video{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover;background:#000}.video-meta{position:absolute;left:10px;bottom:10px;display:flex;gap:8px;align-items:center;background:#0000008c;padding:4px 10px;border-radius:999px;font-size:13px}.pill{background:#174ea6;padding:2px 8px;border-radius:999px;font-size:11px}.avatar{width:72px;height:72px;border-radius:50%;display:grid;place-items:center;background:#3c4043;font-size:24px}.avatar.big{width:120px;height:120px;font-size:40px}.panel{width:min(360px,100vw);border-left:1px solid var(--line);background:var(--card);display:grid;grid-template-rows:auto 1fr auto;min-height:0}.board-panel{grid-template-rows:auto auto 1fr}.panel-title{padding:14px 16px;border-bottom:1px solid var(--line);font-weight:600}.chat-list{overflow:auto;padding:12px;display:grid;gap:10px}.chat-name{font-size:12px;color:var(--muted)}.chat-bubble{background:#2b2c30;padding:8px 10px;border-radius:8px}.chat-row.mine .chat-bubble{background:#174ea6}.chat-form{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line)}.people{margin:0;padding:16px 20px;line-height:1.8}.board-tools{display:flex;gap:8px;padding:10px 12px;align-items:center;flex-wrap:wrap}.swatch{width:22px;height:22px;border-radius:50%;padding:0;border:2px solid transparent}.swatch.on,.tool.on{outline:2px solid var(--accent)}.tool{font-size:12px;padding:6px 10px}.tool.danger{background:#5f2120}.board{width:100%;height:100%;touch-action:none;cursor:crosshair}.controls{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;padding:14px;background:#202124}.ctrl{min-width:76px}.ctrl.off{background:#5f2120}.ctrl.on{background:#174ea6}.ctrl.leave{background:#d93025}