:root{--text: #6b6375;--text-h: #08060d;--bg: #fff;--border: #e5e4e7;--code-bg: #f4f3ec;--accent: #aa3bff;--accent-bg: rgba(170, 59, 255, .1);--accent-border: rgba(170, 59, 255, .5);--social-bg: rgba(244, 243, 236, .5);--shadow: rgba(0, 0, 0, .1) 0 10px 15px -3px, rgba(0, 0, 0, .05) 0 4px 6px -2px;--sans: system-ui, "Segoe UI", Roboto, sans-serif;--heading: system-ui, "Segoe UI", Roboto, sans-serif;--mono: ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (max-width: 1024px){:root{font-size:16px}}@media (prefers-color-scheme: dark){:root{--text: #9ca3af;--text-h: #f3f4f6;--bg: #16171d;--border: #2e303a;--code-bg: #1f2028;--accent: #c084fc;--accent-bg: rgba(192, 132, 252, .15);--accent-border: rgba(192, 132, 252, .5);--social-bg: rgba(47, 48, 58, .5);--shadow: rgba(0, 0, 0, .4) 0 10px 15px -3px, rgba(0, 0, 0, .25) 0 4px 6px -2px}#social .button-icon{filter:invert(1) brightness(2)}}#root{width:1126px;max-width:100%;margin:0 auto;text-align:center;border-inline:1px solid var(--border);min-height:100svh;display:flex;flex-direction:column;box-sizing:border-box}body{margin:0}h1,h2{font-family:var(--heading);font-weight:500;color:var(--text-h)}h1{font-size:56px;letter-spacing:-1.68px;margin:32px 0}@media (max-width: 1024px){h1{font-size:36px;margin:20px 0}}h2{font-size:24px;line-height:118%;letter-spacing:-.24px;margin:0 0 8px}@media (max-width: 1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);display:inline-flex;border-radius:4px;color:var(--text-h)}code{font-size:15px;line-height:135%;padding:4px 8px;background:var(--code-bg)}.live-class-page{width:100%;height:100vh;overflow:hidden;background:#f8fafc}.live-header{height:72px;background:#fff;border-bottom:1px solid #e5e7eb;display:flex;justify-content:space-between;align-items:center;padding:0 24px;box-shadow:0 2px 8px #0000000d;position:relative;z-index:999}.header-left{display:flex;align-items:center;gap:15px}.logo{height:42px}.header-content h5{margin:0;font-size:18px;font-weight:600;color:#111827}.header-content span{font-size:13px;color:#6b7280}.header-right{display:flex;align-items:center;gap:15px}.live-status{display:flex;align-items:center;gap:6px;color:#ef4444;font-weight:600}.dot{width:10px;height:10px;border-radius:50%;background:#ef4444}.leave-btn{border:none;background:#ef4444;color:#fff;padding:10px 18px;border-radius:8px;font-weight:600;cursor:pointer}.meeting-container{width:100%;height:calc(100vh - 72px)}@media (max-width: 768px){.live-header{padding:0 15px}.header-content h5{font-size:15px}.header-content span{font-size:11px}.leave-btn{padding:8px 14px}}@media (max-width: 576px){.live-header{height:64px;padding:10px 12px}.logo{height:34px}.header-content span{display:none}.header-content h5{font-size:13px;max-width:140px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.live-status{font-size:12px}.leave-btn{padding:8px 12px;font-size:12px}.meeting-container{height:calc(100vh - 64px)}}