*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0a0a0f;--surface: #13131a;--surface2: #1c1c27;--border: rgba(255,255,255,.08);--accent: #6366f1;--accent-h: #818cf8;--text: #e8e8f0;--text-muted:#8888a8;--danger: #ef4444;--success: #22c55e;--radius: 10px;--radius-lg: 16px;--shadow: 0 4px 24px rgba(0,0,0,.5);font-family:Inter,Hiragino Sans,Yu Gothic,system-ui,sans-serif;font-size:16px;line-height:1.6;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}body{min-height:100vh}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-h)}img{max-width:100%;display:block}button{cursor:pointer;font-family:inherit}.layout{display:flex;flex-direction:column;min-height:100vh}.header{position:sticky;top:0;z-index:100;background:#0a0a0fd9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}.header-logo{font-size:18px;font-weight:700;letter-spacing:-.02em;color:var(--text);display:flex;align-items:center;gap:8px}.header-logo span{color:var(--accent)}.header-nav{display:flex;align-items:center;gap:16px}.main{flex:1;padding:32px 24px;max-width:1200px;margin:0 auto;width:100%}.btn{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;border-radius:var(--radius);font-size:14px;font-weight:500;border:none;transition:all .15s ease;white-space:nowrap}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-h);transform:translateY(-1px)}.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn-ghost:hover{color:var(--text);border-color:#fff3}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease}.card:hover{transform:translateY(-3px);box-shadow:0 12px 32px #6366f126}.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}.video-card{cursor:pointer}.video-thumbnail{aspect-ratio:16/9;background:var(--surface2);position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center}.video-thumbnail .play-icon{width:56px;height:56px;background:#6366f1d9;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:transform .2s}.video-card:hover .play-icon{transform:scale(1.1)}.video-duration{position:absolute;bottom:8px;right:8px;background:#000000bf;color:#fff;font-size:12px;padding:2px 6px;border-radius:4px;font-variant-numeric:tabular-nums}.video-info{padding:16px}.video-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:6px;line-height:1.4}.video-desc{font-size:13px;color:var(--text-muted);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.player-page{max-width:960px;margin:0 auto}.player-wrap{position:relative;aspect-ratio:16/9;background:#000;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}.player-wrap video{width:100%;height:100%;display:block}.watermark-canvas{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:10}.player-loading{position:absolute;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;z-index:20}.spinner{width:48px;height:48px;border:3px solid rgba(255,255,255,.1);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.player-error{position:absolute;top:0;right:0;bottom:0;left:0;background:#000c;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;z-index:20;color:var(--danger)}.video-meta{margin-top:24px}.video-meta h1{font-size:24px;font-weight:700;margin-bottom:8px;letter-spacing:-.02em}.video-meta p{color:var(--text-muted);line-height:1.7}.back-link{display:inline-flex;align-items:center;gap:6px;color:var(--text-muted);font-size:14px;margin-bottom:20px;transition:color .15s}.back-link:hover{color:var(--text)}.page-loading,.page-empty,.page-error{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:320px;gap:16px;color:var(--text-muted);text-align:center}.page-error{color:var(--danger)}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.auth-card{text-align:center;padding:48px 40px;max-width:420px;width:100%}.auth-card h1{font-size:28px;font-weight:800;letter-spacing:-.03em;margin-bottom:12px}.auth-card h1 span{color:var(--accent)}.auth-card p{color:var(--text-muted);margin-bottom:32px;line-height:1.7}.page-title{font-size:28px;font-weight:800;letter-spacing:-.03em;margin-bottom:8px}.page-subtitle{color:var(--text-muted);margin-bottom:32px}.user-badge{display:flex;align-items:center;gap:10px;padding:6px 12px;background:var(--surface2);border:1px solid var(--border);border-radius:100px;font-size:13px;color:var(--text-muted)}.user-badge img{width:24px;height:24px;border-radius:50%}@media(max-width:640px){.header{padding:0 16px}.main{padding:24px 16px}.video-grid{grid-template-columns:1fr}.page-title{font-size:22px}.auth-card{padding:32px 24px}}