*{box-sizing:border-box;margin:0;padding:0}:root{--bg: #F5F7FA;--bg-warm: #EFF2F7;--card: #FFFFFF;--border: #E2E8F0;--border-light: #F1F5F9;--text: #111827;--text-secondary: #4B5563;--text-muted: #9CA3AF;--accent: #4F46E5;--accent-light: rgba(79, 70, 229, .08);--accent-hover: #4338CA;--radius: 12px;--radius-sm: 8px;--shadow: 0 1px 3px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.04);--shadow-hover: 0 4px 16px rgba(0,0,0,.1)}body{font-family:Inter,-apple-system,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased}.app{max-width:1200px;margin:0 auto;padding:24px;min-height:100vh}.loading,.empty{text-align:center;padding:60px 24px;color:var(--text-muted);font-size:15px}.header{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px;padding-bottom:16px;border-bottom:1px solid var(--border)}.header-left{display:flex;align-items:center;gap:12px}.header-logo{font-size:28px}.header h1{font-size:24px;font-weight:700;color:var(--text);letter-spacing:-.02em}.header-nav{display:flex;gap:4px}.nav-btn{background:none;border:none;padding:8px 16px;font-size:14px;font-weight:500;color:var(--text-secondary);cursor:pointer;border-radius:var(--radius-sm);transition:all .15s;font-family:inherit}.nav-btn:hover{background:var(--accent-light);color:var(--accent)}.nav-btn.active{background:var(--accent);color:#fff}.back-btn{background:none;border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px 14px;font-size:14px;cursor:pointer;color:var(--accent);font-weight:500;transition:all .15s;font-family:inherit;margin-bottom:16px}.back-btn:hover{background:var(--accent-light)}.section-title{font-size:18px;font-weight:600;color:var(--text);margin-bottom:20px}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.section-header .section-title{margin-bottom:0}.view-toggle{display:flex;gap:2px;background:var(--bg-warm);border-radius:var(--radius-sm);padding:3px;border:1px solid var(--border)}.view-toggle-btn{background:none;border:none;padding:6px 10px;border-radius:6px;cursor:pointer;color:var(--text-muted);display:flex;align-items:center;justify-content:center;transition:all .15s}.view-toggle-btn:hover{color:var(--text-secondary)}.view-toggle-btn.active{background:var(--card);color:var(--accent);box-shadow:0 1px 3px #0000001a}.category-badge{display:inline-block;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;padding:3px 8px;border-radius:4px;margin-bottom:6px;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.detail-category-badge{font-size:12px;font-weight:600;padding:4px 12px;border-radius:20px}.box-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.box-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;cursor:pointer;transition:transform .15s,box-shadow .15s;box-shadow:var(--shadow);position:relative;overflow:hidden}.box-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}.box-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.box-icon{font-size:32px}.box-count{font-size:13px;font-weight:600;color:var(--box-color);background:color-mix(in srgb,var(--box-color) 10%,transparent);padding:4px 10px;border-radius:20px}.box-name{font-size:18px;font-weight:600;color:var(--text);margin-bottom:16px}.box-bar{height:3px;background:var(--box-color);border-radius:2px;width:40px;transition:width .2s}.box-card:hover .box-bar{width:80px}.box-grid.list-view{grid-template-columns:1fr}.box-grid.list-view .box-card{display:flex;align-items:center;gap:16px;padding:16px 24px}.box-grid.list-view .box-card-header{margin-bottom:0;gap:8px}.box-grid.list-view .box-icon{font-size:24px}.box-grid.list-view .box-name{margin-bottom:0;font-size:16px;flex:1}.box-grid.list-view .box-bar{display:none}.box-view-header{display:flex;align-items:center;gap:12px;margin-bottom:20px;flex-wrap:wrap}.box-view-header .back-btn{margin-bottom:0}.box-view-icon{font-size:24px}.box-view-header h2{font-size:22px;font-weight:700;color:var(--text)}.item-count{font-size:13px;color:var(--text-muted);font-weight:500;margin-left:auto}.filter-bar{display:flex;gap:12px;margin-bottom:20px}.search-input{flex:1;border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 16px;font-size:14px;font-family:inherit;background:var(--card);transition:border-color .15s;min-width:0}.search-input:focus{outline:none;border-color:var(--accent)}.sort-select{border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 16px;font-size:14px;font-family:inherit;background:var(--card);cursor:pointer;color:var(--text)}.sort-select:focus{outline:none;border-color:var(--accent)}.item-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.item-list.list-view{grid-template-columns:1fr}.item-card-list{display:flex;flex-direction:row}.item-card-list .item-thumb{width:220px;min-width:220px;aspect-ratio:16/9}.item-card-list .item-body{flex:1;display:flex;flex-direction:column;justify-content:center}.item-card-list .item-summary{-webkit-line-clamp:3}.item-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;cursor:pointer;transition:transform .15s,box-shadow .15s;box-shadow:var(--shadow)}.item-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}.item-thumb{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;background:var(--bg-warm)}.item-thumb img{width:100%;height:100%;object-fit:cover}.item-thumb-empty{display:flex;align-items:center;justify-content:center}.thumb-icon{font-size:36px;opacity:.5}.duration-badge{position:absolute;bottom:6px;right:6px;background:#000000bf;color:#fff;font-size:11px;font-weight:600;padding:2px 6px;border-radius:4px;font-family:JetBrains Mono,monospace}.score-badge{position:absolute;top:8px;right:8px;color:#fff;font-size:12px;font-weight:700;padding:4px 8px;border-radius:6px;font-family:JetBrains Mono,monospace}.item-body{padding:14px}.item-title{font-size:14px;font-weight:600;line-height:1.35;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.item-summary{font-size:13px;color:var(--text-secondary);line-height:1.4;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.item-meta{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--text-muted);margin-bottom:8px}.item-author{font-weight:500}.item-tags{display:flex;flex-wrap:wrap;gap:4px}.tag{font-size:11px;padding:2px 8px;border-radius:4px;border:1px solid;font-weight:500;background:transparent}.detail-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}.detail-embed{position:relative;padding-top:56.25%;background:#000}.detail-embed iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:none}.detail-header{display:flex;align-items:center;gap:12px;padding:20px 24px 0;flex-wrap:wrap}.detail-box-badge{font-size:12px;font-weight:600;color:#fff;padding:4px 12px;border-radius:20px}.detail-date{font-size:13px;color:var(--text-muted)}.detail-link{margin-left:auto;font-size:13px;color:var(--accent);font-weight:500;text-decoration:none}.detail-link:hover{text-decoration:underline}.detail-download{font-size:13px;color:var(--accent);font-weight:500;text-decoration:none;border:1px solid var(--accent);border-radius:var(--radius-sm);padding:4px 12px;transition:all .15s}.detail-download:hover{background:var(--accent);color:#fff}.detail-title{font-size:22px;font-weight:700;padding:14px 24px 4px;line-height:1.3}.detail-author{font-size:14px;color:var(--text-secondary);font-weight:500;padding:0 24px}.detail-journal{font-size:13px;color:var(--text-muted);padding:2px 24px;font-style:italic}.detail-body{padding:16px 24px 20px}.detail-text{font-size:15px;line-height:1.7;color:var(--text);white-space:pre-wrap}.detail-learnings,.detail-insights,.detail-authors{margin-top:20px;padding-top:16px;border-top:1px solid var(--border-light)}.detail-learnings h4,.detail-insights h4,.detail-authors h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:10px}.detail-learnings p,.detail-authors p{font-size:14px;line-height:1.6;color:var(--text-secondary);white-space:pre-wrap}.insight-item{display:flex;gap:8px;align-items:flex-start;padding:8px 12px;background:var(--bg);border-radius:var(--radius-sm);margin-bottom:6px}.insight-type{font-size:11px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:.04em;flex-shrink:0;min-width:80px}.insight-text{font-size:13px;line-height:1.4;color:var(--text)}.detail-tags{display:flex;flex-wrap:wrap;gap:6px;padding:0 24px 20px}.chat-panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;margin-top:16px;box-shadow:var(--shadow)}.chat-title{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text)}.chat-thread{margin-bottom:16px;padding-bottom:16px;border-bottom:1px solid var(--border-light)}.chat-q{font-size:14px;font-weight:500;color:var(--accent);margin-bottom:8px;padding-left:12px;border-left:3px solid var(--box-color, var(--accent))}.chat-a{font-size:14px;line-height:1.6;color:var(--text);white-space:pre-wrap}.typing-dot{display:inline-block;width:6px;height:6px;background:var(--accent);border-radius:50%;margin-left:4px;animation:pulse 1s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}.chat-input-row{display:flex;gap:8px}.chat-input{flex:1;border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 16px;font-size:14px;font-family:inherit;background:var(--bg);transition:border-color .15s}.chat-input:focus{outline:none;border-color:var(--accent);background:var(--card)}.chat-send{background:var(--accent);color:#fff;border:none;border-radius:var(--radius-sm);padding:10px 20px;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit;transition:background .15s}.chat-send:hover:not(:disabled){background:var(--accent-hover)}.chat-send:disabled{opacity:.5;cursor:not-allowed}.global-chat-fab{position:fixed;bottom:24px;right:24px;width:56px;height:56px;border-radius:50%;background:var(--accent);color:#fff;border:none;font-size:24px;cursor:pointer;box-shadow:0 4px 16px #4f46e559;transition:transform .15s,box-shadow .15s;z-index:1000;display:flex;align-items:center;justify-content:center}.global-chat-fab:hover{transform:scale(1.08);box-shadow:0 6px 20px #4f46e573}.global-chat-overlay{position:fixed;bottom:92px;right:24px;width:420px;max-height:560px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 32px #0000001f;display:flex;flex-direction:column;z-index:999;overflow:hidden}.global-chat-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:baseline;gap:8px;font-size:16px;font-weight:600;color:var(--text)}.global-chat-sub{font-size:12px;font-weight:400;color:var(--text-muted)}.global-chat-messages{flex:1;overflow-y:auto;padding:16px 20px;display:flex;flex-direction:column;gap:12px;min-height:200px;max-height:360px}.global-chat-empty{color:var(--text-muted);font-size:14px;text-align:center;padding:40px 0}.global-chat-msg.user{align-self:flex-end;max-width:85%}.global-chat-msg.assistant{align-self:flex-start;max-width:90%}.global-chat-user-text{background:var(--accent);color:#fff;padding:8px 14px;border-radius:14px 14px 4px;font-size:14px;line-height:1.4}.global-chat-ai-text{background:var(--bg);color:var(--text);padding:10px 14px;border-radius:14px 14px 14px 4px;font-size:14px;line-height:1.6;white-space:pre-wrap}.global-chat-sources{display:flex;flex-wrap:wrap;gap:6px;align-items:center;padding:8px 0 0}.global-chat-sources-label{font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}.global-chat-source-btn{font-size:11px;padding:3px 8px;border:1px solid var(--border);border-radius:4px;background:var(--card);cursor:pointer;color:var(--accent);font-weight:500;font-family:inherit;transition:all .15s}.global-chat-source-btn:hover{background:var(--accent-light)}.global-chat-input-row{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--border)}.global-chat-input{flex:1;border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 14px;font-size:14px;font-family:inherit;background:var(--bg);transition:border-color .15s}.global-chat-input:focus{outline:none;border-color:var(--accent);background:var(--card)}.global-chat-send{background:var(--accent);color:#fff;border:none;border-radius:var(--radius-sm);padding:10px 16px;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit;transition:background .15s}.global-chat-send:hover:not(:disabled){background:var(--accent-hover)}.global-chat-send:disabled{opacity:.5;cursor:not-allowed}@media(max-width:768px){.global-chat-overlay{right:12px;left:12px;bottom:84px;width:auto;max-height:70vh}.global-chat-fab{bottom:16px;right:16px}}.settings-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.settings-card h3{font-size:16px;font-weight:600;margin-bottom:16px}.settings-list{display:flex;flex-direction:column;gap:8px}.settings-row{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--bg);border-radius:var(--radius-sm)}.settings-icon{font-size:20px}.settings-name{font-size:14px;font-weight:500;flex:1}.settings-actions{display:flex;gap:6px}.move-btn{background:var(--card);border:1px solid var(--border);border-radius:6px;width:32px;height:32px;font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s}.move-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.move-btn:disabled{opacity:.3;cursor:not-allowed}.toggle-btn{border:1px solid var(--border);border-radius:6px;padding:6px 12px;font-size:12px;font-weight:500;cursor:pointer;font-family:inherit;transition:all .15s}.toggle-btn.on{background:#10b981;color:#fff;border-color:#10b981}.toggle-btn.off{background:var(--card);color:var(--text-muted)}@media(max-width:1024px){.item-list:not(.list-view){grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.app{padding:16px}.box-grid,.item-list{grid-template-columns:1fr}.item-card-list{flex-direction:column}.item-card-list .item-thumb{width:100%;min-width:0}.header{flex-direction:column;gap:12px;align-items:flex-start}.filter-bar{flex-direction:column}.filter-bar .view-toggle{align-self:flex-end}.box-view-header{flex-direction:column;align-items:flex-start}.item-count{margin-left:0}.detail-title{font-size:18px;padding:12px 16px 4px}.detail-header{padding:16px 16px 0}.detail-body{padding:12px 16px 16px}.detail-tags{padding:0 16px 16px}.chat-panel{padding:16px}}
