:root{--glass: rgba(255, 255, 255, .55);--glass-heavy: rgba(255, 255, 255, .72);--glass-light: rgba(255, 255, 255, .35);--glass-border: rgba(255, 255, 255, .45);--glass-blur: blur(24px) saturate(180%);--bg: #f0eeff;--accent: #f7931a;--accent-hover: #e07d00;--accent-light: rgba(247, 147, 26, .12);--accent-gradient: linear-gradient(135deg, #f7931a, #ff6b6b);--text-1: #1a1a2e;--text-2: #5c5c7a;--text-3: #9e9eb8;--radius: 20px;--radius-sm: 14px;--radius-xs: 10px;--header-h: 68px;--sidebar-w: 280px;--shadow: 0 4px 30px rgba(0, 0, 0, .06);--shadow-hover: 0 8px 40px rgba(0, 0, 0, .1);--transition: all .25s cubic-bezier(.4, 0, .2, 1)}[data-theme=dark]{--glass: rgba(30, 30, 45, .65);--glass-heavy: rgba(25, 25, 40, .82);--glass-light: rgba(40, 40, 60, .45);--glass-border: rgba(255, 255, 255, .08);--bg: #0f0e1a;--accent: #f7931a;--accent-hover: #ffab40;--accent-light: rgba(247, 147, 26, .15);--text-1: #e8e6f0;--text-2: #a8a6be;--text-3: #6e6c85;--shadow: 0 4px 30px rgba(0, 0, 0, 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var(--glass-border);background:var(--glass);color:var(--text-2);font-size:14px;cursor:pointer;transition:var(--transition)}.page-btn:hover{background:var(--glass-heavy)}.page-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.post-page{max-width:800px;margin:0 auto;padding:24px 16px 60px}.post-detail-card{background:var(--glass);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);border-radius:var(--radius);padding:32px}.post-detail-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}.post-delete-btn{margin-left:auto;background:none;border:none;color:var(--text-3);font-size:16px;cursor:pointer;padding:4px 8px;border-radius:4px;line-height:1;transition:all .2s;flex-shrink:0}.post-delete-btn:hover{color:#ef4444;background:#ef44441a}.post-delete-detail-btn{display:inline-block;background:none;border:1px solid var(--text-3);color:var(--text-3);font-size:13px;cursor:pointer;padding:4px 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#22c55e66;pointer-events:none}.episode-card.locked{cursor:not-allowed}.episode-card.locked:hover{transform:none;box-shadow:var(--shadow)}.card-lock-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#00000073;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;border-radius:inherit}.lock-icon{font-size:28px;filter:drop-shadow(0 2px 4px rgba(0,0,0,.3))}.sidebar-card{background:var(--glass);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);margin-bottom:18px}.sidebar-card h3{font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:-.2px}.sidebar-quote-list{list-style:none;padding:0;margin:0}.sidebar-quote-item{display:flex;align-items:flex-start;gap:10px;padding:10px 0;border-bottom:1px solid rgba(0,0,0,.04)}.sidebar-quote-item:last-child{border-bottom:none}.sidebar-quote-num{flex-shrink:0;width:22px;height:22px;background:var(--primary);color:#fff;font-size:11px;font-weight:700;border-radius:6px;display:flex;align-items:center;justify-content:center;margin-top:1px}.sidebar-quote-text{font-size:13px;color:var(--text-2);line-height:1.6}.sidebar-quote-more{text-align:center;font-size:12px;color:var(--primary);font-weight:600;padding-top:12px;margin-top:4px;border-top:1px solid rgba(0,0,0,.05)}.sidebar-history-card h3{display:flex;align-items:center;gap:6px}.sidebar-history-card h3:before{content:"🕐";font-size:14px}.history-list{list-style:none;padding:0;margin:0}.history-item{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid rgba(0,0,0,.04);cursor:pointer;transition:all 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1fr;gap:10px}.stat-box{background:var(--glass-light);border-radius:var(--radius-xs);padding:14px 10px;text-align:center;border:1px solid rgba(255,255,255,.3)}.stat-number{font-size:22px;font-weight:800;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stat-label{font-size:11px;color:var(--text-3);margin-top:2px}.progress-list{list-style:none}.progress-item{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px solid 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var(--glass-border);border-radius:50px;font-family:inherit;transition:var(--transition)}.back-btn:hover{color:var(--text-1);background:var(--glass-heavy)}.video-container{position:relative;width:100%;padding-top:56.25%;border-radius:var(--radius);overflow:hidden;margin-bottom:24px;box-shadow:var(--shadow-hover)}.video-container video,.video-container iframe{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:none}.video-placeholder{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:16px}.video-paywall-overlay{background:linear-gradient(135deg,#000000b3,#000000d9)!important}.video-lock-icon{font-size:48px;margin-bottom:4px}.video-lock-title{color:#fff;font-size:20px;font-weight:700;margin:0}.video-lock-text{color:#ffffffb3;font-size:14px;margin:0}.video-paywall-overlay 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h3{font-size:14px;font-weight:600;margin-bottom:8px;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.knowledge-card p{font-size:13px;color:var(--text-2);line-height:1.7}.mindmap-section{max-width:1000px;margin:0 auto;padding:20px 24px 40px}.mindmap-section h2{font-size:18px;font-weight:700;margin-bottom:22px}.mindmap-list{display:flex;flex-direction:column;gap:24px}.mindmap-item{background:var(--glass);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}.mindmap-item h3{font-size:15px;font-weight:600;padding:16px 20px;border-bottom:1px solid 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6px;border-radius:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:220px}@media(max-width:1024px){.home-sidebar{display:none}.home-layout{padding:16px}}@media(max-width:768px){.header{top:8px;left:10px;right:10px;padding:0 16px}.logo-text{display:none}.episode-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px}.video-view,.quiz-section,.knowledge-section{padding:12px 14px 32px}.video-title{font-size:18px}.tabs{gap:4px}.tab{padding:7px 14px;font-size:12px}.admin-stats-grid{grid-template-columns:repeat(2,1fr)}.admin-dashboard{padding:12px 14px 40px}.admin-table{font-size:12px}.admin-table th,.admin-table td{padding:10px 8px}.admin-payment-item{flex-wrap:wrap;gap:8px}.stream-video-card{flex-direction:column}.stream-video-thumb{width:100%;height:auto;aspect-ratio:16/9}.stream-upload-form{flex-direction:column}.stream-input{width:100%}.stream-file-label{max-width:100%}.community-page{padding:16px 12px 40px}.community-title{font-size:22px}.board-tab{padding:8px 16px;font-size:13px}.post-card{padding:16px}.post-card-title{font-size:16px}.post-detail-card{padding:20px}.post-detail-title{font-size:20px}.post-paywall-box{padding:24px 20px}}@media(max-width:480px){.episode-grid{grid-template-columns:1fr 1fr;gap:10px}.card-thumbnail-bg .ep-number{font-size:32px}}