:root{--bg-primary: #0a0e1a;--bg-secondary: #111827;--bg-card: rgba(17, 24, 39, .7);--bg-card-hover: rgba(22, 30, 48, .85);--bg-glass: rgba(255, 255, 255, .03);--bg-glass-border: rgba(255, 255, 255, .08);--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--text-accent: #38bdf8;--accent-blue: #38bdf8;--accent-purple: #a78bfa;--accent-emerald: #34d399;--accent-amber: #fbbf24;--accent-rose: #fb7185;--accent-cyan: #22d3ee;--accent-orange: #fb923c;--cat-breaking: #f43f5e;--cat-models: #8b5cf6;--cat-healthcare: #10b981;--cat-tutorials: #6366f1;--cat-research: #3b82f6;--cat-business: #f59e0b;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--radius-sm: .375rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--shadow-glow: 0 0 30px rgba(56, 189, 248, .15);--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .4s cubic-bezier(.4, 0, .2, 1);--font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-heading: "Outfit", "Inter", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:radial-gradient(ellipse 80% 60% at 10% 20%,rgba(56,189,248,.06) 0%,transparent 60%),radial-gradient(ellipse 60% 50% at 90% 80%,rgba(139,92,246,.06) 0%,transparent 60%),radial-gradient(ellipse 50% 40% at 50% 50%,rgba(16,185,129,.04) 0%,transparent 60%);pointer-events:none;z-index:0}#app{position:relative;z-index:1;min-height:100vh;display:flex;flex-direction:column}a{color:var(--accent-blue);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--accent-cyan)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#94a3b833;border-radius:999px}::-webkit-scrollbar-thumb:hover{background:#94a3b859}.app-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-lg) var(--space-xl);border-bottom:1px solid var(--bg-glass-border);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);background:#0a0e1acc;position:sticky;top:0;z-index:100}.header-left{display:flex;align-items:center;gap:var(--space-lg)}.logo{display:flex;align-items:center;gap:var(--space-sm)}.logo-icon{font-size:1.75rem;filter:drop-shadow(0 0 8px rgba(56,189,248,.5));animation:pulse-glow 2s ease-in-out infinite}@keyframes pulse-glow{0%,to{filter:drop-shadow(0 0 8px rgba(56,189,248,.5))}50%{filter:drop-shadow(0 0 16px rgba(56,189,248,.8))}}.logo-text{font-family:var(--font-heading);font-size:1.75rem;font-weight:800;letter-spacing:-.03em;color:var(--text-primary)}.logo-accent{background:linear-gradient(135deg,var(--accent-blue),var(--accent-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.tagline{font-size:.8rem;color:var(--text-muted);font-weight:400;letter-spacing:.04em;text-transform:uppercase;padding-left:var(--space-lg);border-left:1px solid var(--bg-glass-border)}.header-right{display:flex;align-items:center;gap:var(--space-xl)}.header-meta{display:flex;flex-direction:column;align-items:flex-end;gap:2px}.current-date{font-size:.8rem;font-weight:500;color:var(--text-secondary)}.last-updated{font-size:.7rem;color:var(--text-muted);font-family:var(--font-mono)}.header-actions{display:flex;gap:var(--space-sm)}.btn-icon{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--bg-glass-border);border-radius:var(--radius-md);background:var(--bg-glass);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.btn-icon:hover{background:#ffffff14;color:var(--text-primary);border-color:#ffffff26;transform:translateY(-1px)}.btn-icon:active{transform:translateY(0)}.btn-icon.spinning svg{animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.onboarding-banner{margin:var(--space-lg) var(--space-xl) 0;border-radius:var(--radius-lg);background:linear-gradient(135deg,#38bdf81a,#8b5cf61a);border:1px solid rgba(56,189,248,.2);animation:fadeInDown .5s ease-out}.onboarding-content{display:flex;align-items:center;gap:var(--space-lg);padding:var(--space-lg) var(--space-xl)}.onboarding-icon{font-size:2rem;flex-shrink:0}.onboarding-text{flex:1;font-size:.9rem;color:var(--text-secondary)}.onboarding-text strong{color:var(--text-primary)}.onboarding-detail{display:block;margin-top:4px;font-size:.8rem;color:var(--text-muted)}.btn-primary{padding:.5rem 1.25rem;font-family:var(--font-body);font-size:.85rem;font-weight:600;color:var(--bg-primary);background:linear-gradient(135deg,var(--accent-blue),var(--accent-purple));border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 20px #38bdf84d}.btn-secondary{padding:.5rem 1.25rem;font-family:var(--font-body);font-size:.85rem;font-weight:500;color:var(--text-secondary);background:transparent;border:1px solid var(--bg-glass-border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.btn-secondary:hover{background:#ffffff0d;color:var(--text-primary)}.portlet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(420px,1fr));gap:var(--space-xl);padding:var(--space-xl);flex:1}.portlet{background:var(--bg-card);border:1px solid var(--bg-glass-border);border-radius:var(--radius-xl);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);overflow:hidden;transition:all var(--transition-normal);animation:fadeInUp .5s ease-out both;display:flex;flex-direction:column}.portlet:hover{background:var(--bg-card-hover);border-color:#ffffff1f;transform:translateY(-4px);box-shadow:var(--shadow-lg)}.portlet:nth-child(1){animation-delay:.05s}.portlet:nth-child(2){animation-delay:.1s}.portlet:nth-child(3){animation-delay:.15s}.portlet:nth-child(4){animation-delay:.2s}.portlet:nth-child(5){animation-delay:.25s}.portlet:nth-child(6){animation-delay:.3s}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.portlet-header{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-lg) var(--space-xl) var(--space-md)}.portlet-icon{font-size:1.5rem;line-height:1}.portlet-title{font-family:var(--font-heading);font-size:1.1rem;font-weight:700;letter-spacing:-.01em;flex:1}.portlet-badge{font-size:.65rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;padding:3px 10px;border-radius:999px;white-space:nowrap}.portlet-badge[data-cat=breaking]{background:#f43f5e26;color:var(--cat-breaking)}.portlet-badge[data-cat=models]{background:#8b5cf626;color:var(--cat-models)}.portlet-badge[data-cat=healthcare]{background:#10b98126;color:var(--cat-healthcare)}.portlet-badge[data-cat=tutorials]{background:#6366f126;color:var(--cat-tutorials)}.portlet-badge[data-cat=research]{background:#3b82f626;color:var(--cat-research)}.portlet-badge[data-cat=business]{background:#f59e0b26;color:var(--cat-business)}.portlet-accent{height:2px;margin:0 var(--space-xl);border-radius:999px;opacity:.6}.portlet-accent[data-cat=breaking]{background:linear-gradient(90deg,var(--cat-breaking),transparent)}.portlet-accent[data-cat=models]{background:linear-gradient(90deg,var(--cat-models),transparent)}.portlet-accent[data-cat=healthcare]{background:linear-gradient(90deg,var(--cat-healthcare),transparent)}.portlet-accent[data-cat=tutorials]{background:linear-gradient(90deg,var(--cat-tutorials),transparent)}.portlet-accent[data-cat=research]{background:linear-gradient(90deg,var(--cat-research),transparent)}.portlet-accent[data-cat=business]{background:linear-gradient(90deg,var(--cat-business),transparent)}.portlet-body{padding:var(--space-md) var(--space-xl) var(--space-lg);flex:1;overflow-y:auto;max-height:480px}.portlet-footer{display:flex;align-items:center;justify-content:space-between;padding:var(--space-sm) var(--space-xl) var(--space-md);border-top:1px solid var(--bg-glass-border);font-size:.7rem;color:var(--text-muted)}.portlet-footer-source{font-family:var(--font-mono)}.article-item{display:flex;gap:var(--space-md);padding:var(--space-md) 0;border-bottom:1px solid rgba(255,255,255,.04);transition:background var(--transition-fast);cursor:pointer;text-decoration:none;color:inherit}.article-item:last-child{border-bottom:none}.article-item:hover{background:#ffffff05}.article-item:hover .article-title{color:var(--accent-blue)}.article-number{font-family:var(--font-heading);font-size:1.25rem;font-weight:800;color:var(--text-muted);min-width:28px;text-align:center;line-height:1.3;opacity:.4}.article-content{flex:1;min-width:0}.article-title{font-size:.9rem;font-weight:600;line-height:1.4;color:var(--text-primary);margin-bottom:4px;transition:color var(--transition-fast);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.article-summary{font-size:.8rem;color:var(--text-secondary);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:6px}.article-meta{display:flex;align-items:center;gap:var(--space-sm);font-size:.7rem;color:var(--text-muted)}.article-source{font-weight:500;color:var(--text-secondary)}.article-dot{opacity:.3}.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--space-md)}.video-item{text-decoration:none;color:inherit;border-radius:var(--radius-md);overflow:hidden;transition:all var(--transition-fast)}.video-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}.video-item:hover .video-title{color:var(--accent-blue)}.video-thumbnail{position:relative;aspect-ratio:16 / 9;overflow:hidden;border-radius:var(--radius-md);background:var(--bg-secondary)}.video-thumbnail img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-normal)}.video-item:hover .video-thumbnail img{transform:scale(1.05)}.video-play-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#0000004d;opacity:0;transition:opacity var(--transition-fast)}.video-item:hover .video-play-overlay{opacity:1}.video-play-btn{width:44px;height:44px;background:#ff0000e6;border-radius:50%;display:flex;align-items:center;justify-content:center}.video-play-btn:after{content:"";display:block;width:0;height:0;border-style:solid;border-width:8px 0 8px 14px;border-color:transparent transparent transparent white;margin-left:3px}.video-info{padding:var(--space-sm) 2px}.video-title{font-size:.8rem;font-weight:600;line-height:1.3;color:var(--text-primary);margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--transition-fast)}.video-channel{font-size:.7rem;color:var(--text-muted)}.skeleton-container{display:flex;flex-direction:column;gap:var(--space-md);padding:var(--space-sm) 0}.skeleton-item{display:flex;gap:var(--space-md);align-items:flex-start}.skeleton-num{width:28px;height:24px;border-radius:var(--radius-sm);background:#ffffff0d;animation:shimmer 1.5s infinite}.skeleton-content{flex:1;display:flex;flex-direction:column;gap:6px}.skeleton-line{height:12px;border-radius:var(--radius-sm);background:#ffffff0d;animation:shimmer 1.5s infinite}.skeleton-line:nth-child(1){width:90%;animation-delay:.1s}.skeleton-line:nth-child(2){width:70%;animation-delay:.2s}.skeleton-line:nth-child(3){width:40%;animation-delay:.3s}@keyframes shimmer{0%{opacity:.5}50%{opacity:1}to{opacity:.5}}.skeleton-video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--space-md)}.skeleton-video{display:flex;flex-direction:column;gap:var(--space-sm)}.skeleton-thumbnail{aspect-ratio:16 / 9;border-radius:var(--radius-md);background:#ffffff0d;animation:shimmer 1.5s infinite}.portlet-error{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-md);padding:var(--space-xl);text-align:center;color:var(--text-muted)}.portlet-error-icon{font-size:2rem;opacity:.5}.portlet-error-message{font-size:.8rem;line-height:1.5;max-width:300px}.btn-retry{padding:.4rem 1rem;font-family:var(--font-body);font-size:.8rem;font-weight:500;color:var(--accent-blue);background:#38bdf81a;border:1px solid rgba(56,189,248,.2);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.btn-retry:hover{background:#38bdf833}.portlet-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-xl);text-align:center}.portlet-empty-icon{font-size:2.5rem;opacity:.3}.portlet-empty-text{font-size:.8rem;color:var(--text-muted)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:1000;display:flex;align-items:center;justify-content:center;animation:fadeIn .2s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:var(--bg-secondary);border:1px solid var(--bg-glass-border);border-radius:var(--radius-xl);width:90%;max-width:520px;box-shadow:var(--shadow-lg);animation:modalSlideIn .3s ease-out}@keyframes modalSlideIn{0%{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-lg) var(--space-xl);border-bottom:1px solid var(--bg-glass-border)}.modal-header h2{font-family:var(--font-heading);font-size:1.2rem;font-weight:700}.modal-close{width:32px;height:32px;border:none}.modal-body{padding:var(--space-xl);display:flex;flex-direction:column;gap:var(--space-xl)}.settings-group{display:flex;flex-direction:column;gap:var(--space-xs)}.settings-label{font-size:.85rem;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:var(--space-sm)}.key-status{font-size:.6rem}.key-status.active{color:var(--accent-emerald)}.key-status.inactive{color:var(--text-muted)}.settings-input{padding:.6rem .9rem;font-family:var(--font-mono);font-size:.85rem;color:var(--text-primary);background:#0000004d;border:1px solid var(--bg-glass-border);border-radius:var(--radius-md);outline:none;transition:border-color var(--transition-fast)}.settings-input:focus{border-color:var(--accent-blue);box-shadow:0 0 0 3px #38bdf81a}.settings-input::placeholder{color:var(--text-muted);opacity:.5}.settings-hint{font-size:.75rem;color:var(--text-muted);margin-top:2px}.badge{font-size:.6rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;padding:2px 6px;border-radius:999px}.badge-optional{background:#94a3b826;color:var(--text-muted)}.modal-footer{display:flex;align-items:center;justify-content:flex-end;gap:var(--space-sm);padding:var(--space-md) var(--space-xl) var(--space-lg);border-top:1px solid var(--bg-glass-border)}.app-footer{padding:var(--space-lg) var(--space-xl);text-align:center;font-size:.75rem;color:var(--text-muted);border-top:1px solid var(--bg-glass-border)}.app-footer strong{color:var(--text-secondary)}@media(max-width:900px){.portlet-grid{grid-template-columns:1fr;padding:var(--space-md);gap:var(--space-lg)}.app-header{flex-direction:column;gap:var(--space-md);padding:var(--space-md)}.header-left{width:100%;justify-content:center;flex-direction:column;gap:var(--space-sm)}.tagline{border-left:none;padding-left:0;text-align:center}.header-right{width:100%;justify-content:center}.onboarding-banner{margin:var(--space-md) var(--space-md) 0}.onboarding-content{flex-direction:column;text-align:center;padding:var(--space-md)}}@media(max-width:480px){.portlet-grid,.video-grid{grid-template-columns:1fr}.portlet-body{max-height:400px}}