:root{--bg:#f5f3ed;--paper:#fffefa;--ink:#22241f;--muted:#77796e;--line:#dddcd3;--orange:#e56a3c;--green:#52735a;--soft:#ebe9e1;font-family:Inter,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}a{color:inherit;text-decoration:none}button,a{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--orange);outline-offset:4px}button{border:0}button:active{transform:translateY(1px)}.shell{max-width:1440px;margin:auto;padding:0 54px}.topbar{height:88px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:14px}.brand{font-weight:800;letter-spacing:-.6px;font-size:21px;display:flex;align-items:center;gap:12px}.mark{width:32px;height:32px;background:var(--ink);color:var(--paper);display:grid;place-items:center;font-size:26px;line-height:1}.micro{font-size:10px;letter-spacing:1.5px;font-weight:700;text-transform:uppercase}.muted{color:var(--muted)}.tag{border:1px solid var(--line);padding:8px 12px;border-radius:30px;font-size:11px;display:inline-flex;gap:7px;align-items:center;white-space:nowrap}.dot{width:6px;height:6px;border-radius:50%;background:var(--green);display:inline-block}.dot.off{background:var(--orange)}.hero{padding:65px 0 72px;display:grid;grid-template-columns:1.1fr 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var(--line);background:var(--paper);border-radius:7px;font-size:20px;letter-spacing:5px;outline:none}.code-input:focus{border-color:var(--orange)}.join-form{display:flex;gap:9px;margin-top:27px;flex-wrap:wrap}.caption{font-size:11px;line-height:1.8;color:var(--muted);margin:14px 0 0}.system-card{border:1px solid #cccbbf;border-radius:12px;background:var(--paper);box-shadow:0 22px 55px #36372a0d;overflow:hidden;transform:rotate(1deg)}.windowbar{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.windowdots{display:flex;gap:5px}.windowdots i{height:7px;width:7px;background:#d6d7cb;border-radius:50%}.preview-content{padding:26px}.preview-title{font-size:24px;font-weight:600;letter-spacing:-.7px}.preview-row{display:flex;justify-content:space-between;align-items:center;padding:19px 0;border-bottom:1px solid var(--line);font-size:13px}.preview-row 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p{font-size:13px;color:var(--muted);line-height:1.7;margin:0}.roomcode{font-size:27px;letter-spacing:4px;font-weight:700}.dashboard{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:22px;padding-bottom:30px}.panel{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:25px}.panel h2{font-size:17px;letter-spacing:-.3px;margin-bottom:8px}.panel-note{font-size:12px;color:var(--muted);line-height:1.8}.stagegrid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.stage{padding:21px;border:1px solid var(--line);border-radius:8px;background:var(--paper);min-width:0;transition:border-color .3s}.stage.open{border-color:#a4b89b;background:#fcfff8}.stage .stage-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.stage h3{font-size:18px;margin:7px 0}.stage p{font-size:11px;color:var(--muted);line-height:1.8;min-height:38px}.stage .button{width:100%;margin-top:12px}.chip{background:var(--soft);border-radius:4px;padding:6px 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