:root{--bg: #070710;--bg-1: #0c0c1d;--bg-2: #111126;--bg-3: #17172f;--bg-hover: rgba(148, 148, 220, .05);--bg-active: rgba(99, 102, 241, .08);--border: rgba(148, 148, 220, .08);--border-md: rgba(148, 148, 220, .13);--border-lg: rgba(148, 148, 220, .2);--text: #eeeef7;--text-2: #8888aa;--text-3: #4e4e72;--accent: #6366f1;--accent-2: #818cf8;--accent-3: #a78bfa;--accent-dim: rgba(99, 102, 241, .1);--accent-glow: rgba(99, 102, 241, .22);--green: #10b981;--green-dim: rgba(16, 185, 129, .1);--amber: #f59e0b;--amber-dim: rgba(245, 158, 11, .1);--red: #ef4444;--red-dim: rgba(239, 68, 68, .1);--gradient: linear-gradient(135deg, #6366f1 0%, #a78bfa 100%);--gradient-text: linear-gradient(135deg, #818cf8 0%, #c4b5fd 100%);--gradient-glow: radial-gradient(ellipse at top, rgba(99,102,241,.12) 0%, transparent 70%);--shadow-xs: 0 1px 2px rgba(0,0,0,.4);--shadow-sm: 0 2px 6px rgba(0,0,0,.5);--shadow-md: 0 4px 16px rgba(0,0,0,.55);--shadow-lg: 0 12px 36px rgba(0,0,0,.65);--shadow-xl: 0 24px 64px rgba(0,0,0,.75);--glow-sm: 0 0 20px rgba(99,102,241,.15);--glow-md: 0 0 40px rgba(99,102,241,.2);--font: "Plus Jakarta Sans", "Inter", system-ui, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--r-xs: 4px;--r-sm: 6px;--r-md: 10px;--r-lg: 14px;--r-xl: 18px;--r-2xl: 24px;--r-full: 9999px;--sp-1: 4px;--sp-2: 8px;--sp-3: 12px;--sp-4: 16px;--sp-5: 20px;--sp-6: 24px;--sp-8: 32px;--sp-10: 40px;--sp-12: 48px;--sp-16: 64px;--sp-20: 80px;--sp-24: 96px;--navbar-h: 56px;--sidebar-w: 252px;--content-max: 1100px;--t-fast: .1s ease;--t-base: .18s ease;--t-slow: .32s cubic-bezier(.4, 0, .2, 1);--spring: cubic-bezier(.34, 1.56, .64, 1)}[data-theme=light]{--bg: #f5f5fc;--bg-1: #ececf8;--bg-2: #e2e2f0;--bg-3: #d8d8ea;--bg-hover: rgba(60, 60, 120, .04);--bg-active: rgba(99, 102, 241, .07);--border: rgba(60, 60, 120, .09);--border-md: rgba(60, 60, 120, .15);--border-lg: rgba(60, 60, 120, .22);--text: #18182e;--text-2: #5a5a7a;--text-3: #9090b4;--accent-dim: rgba(99, 102, 241, .08);--accent-glow: rgba(99, 102, 241, .14);--green-dim: rgba(16, 185, 129, .08);--amber-dim: rgba(245, 158, 11, .08);--red-dim: rgba(239, 68, 68, .08);--gradient-text: linear-gradient(135deg, #5052d6 0%, #8b5cf6 100%);--shadow-xs: 0 1px 2px rgba(0,0,0,.06);--shadow-sm: 0 2px 6px rgba(0,0,0,.08);--shadow-md: 0 4px 16px rgba(0,0,0,.1);--shadow-lg: 0 12px 36px rgba(0,0,0,.12);--shadow-xl: 0 24px 64px rgba(0,0,0,.14);--glow-sm: 0 0 20px rgba(99,102,241,.1);--glow-md: 0 0 40px rgba(99,102,241,.12);--gradient-glow: radial-gradient(ellipse at top, rgba(99,102,241,.07) 0%, transparent 70%)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;min-height:100dvh;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;background:none}input,select,textarea{font-family:inherit}img,svg{display:block}ul,ol{list-style:none}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-lg);border-radius:var(--r-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-3)}h1,h2,h3,h4,h5,h6{font-family:var(--font);font-weight:700;line-height:1.2;letter-spacing:-.02em;color:var(--text)}p{color:var(--text-2);line-height:1.65}code,kbd,.mono{font-family:var(--font-mono);font-size:.85em;letter-spacing:0}kbd{display:inline-flex;align-items:center;padding:2px 6px;background:var(--bg-2);border:1px solid var(--border-md);border-radius:var(--r-xs);font-size:11px;color:var(--text-2);line-height:1.4}#root{display:flex;flex-direction:column;min-height:100dvh}.app-body{flex:1;display:flex;flex-direction:column}.container{width:100%;max-width:var(--content-max);margin:0 auto;padding:0 var(--sp-6)}@media (max-width: 640px){.container{padding:0 var(--sp-4)}}.section{padding:var(--sp-16) 0}.section-head{margin-bottom:var(--sp-10)}.section-head h2{font-size:clamp(1.4rem,2.5vw,1.9rem);margin-bottom:var(--sp-2)}.section-head p{font-size:1rem;color:var(--text-2)}.gradient-text{background:var(--gradient-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.glass{background:var(--bg-1);border:1px solid var(--border);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.glass-strong{background:var(--bg-2);border:1px solid var(--border-md);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}.card{background:var(--bg-1);border:1px solid var(--border);border-radius:var(--r-xl);transition:border-color var(--t-base),box-shadow var(--t-base),transform var(--t-base)}.card:hover{border-color:var(--border-lg);box-shadow:var(--shadow-md)}.btn{display:inline-flex;align-items:center;gap:var(--sp-2);padding:9px 18px;border-radius:var(--r-md);font-size:14px;font-weight:600;letter-spacing:-.01em;transition:all var(--t-base);cursor:pointer;white-space:nowrap;-webkit-user-select:none;user-select:none}.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 2px 12px var(--accent-glow)}.btn-primary:hover{opacity:.9;box-shadow:0 4px 20px var(--accent-glow);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0);opacity:1}.btn-secondary{background:var(--bg-2);border:1px solid var(--border-md);color:var(--text)}.btn-secondary:hover{background:var(--bg-3);border-color:var(--border-lg)}.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text-2)}.btn-ghost:hover{background:var(--bg-hover);color:var(--text);border-color:var(--border-md)}.btn-ghost.danger:hover{background:var(--red-dim);color:var(--red);border-color:#ef44444d}.btn-sm{padding:6px 12px;font-size:12.5px;border-radius:var(--r-sm)}.btn-lg{padding:12px 24px;font-size:15px;border-radius:var(--r-lg)}.btn:disabled{opacity:.4;cursor:not-allowed;pointer-events:none}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--r-sm);color:var(--text-2);transition:all var(--t-fast);cursor:pointer;background:transparent;border:none;flex-shrink:0}.icon-btn:hover{background:var(--bg-hover);color:var(--text)}.icon-btn:active{background:var(--bg-2)}.icon-btn:disabled{opacity:.35;cursor:not-allowed;pointer-events:none}.progress-bar{height:3px;background:var(--border-md);border-radius:var(--r-full);overflow:hidden}.progress-fill{height:100%;border-radius:var(--r-full);background:var(--gradient);transition:width .4s ease}.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:var(--r-full);font-size:11.5px;font-weight:600;letter-spacing:.01em}.badge-accent{background:var(--accent-dim);color:var(--accent-2)}.badge-green{background:var(--green-dim);color:var(--green)}.badge-amber{background:var(--amber-dim);color:var(--amber)}@keyframes shimmer{0%{background-position:-400px 0}to{background-position:400px 0}}.skeleton{background:linear-gradient(90deg,var(--bg-2) 25%,var(--bg-3) 50%,var(--bg-2) 75%);background-size:800px 100%;animation:shimmer 1.4s ease-in-out infinite;border-radius:var(--r-md)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--sp-3);padding:var(--sp-16) var(--sp-8);border-radius:var(--r-xl);text-align:center}.empty-state h3{font-size:1rem;color:var(--text-2);font-weight:600}.empty-state p{font-size:.875rem;color:var(--text-3)}.empty-icon{display:flex;align-items:center;justify-content:center;width:44px;height:44px;background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-lg);color:var(--text-3);margin-bottom:var(--sp-2)}.scroll-panel{overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain}@keyframes fadeUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes scaleIn{0%{opacity:0;transform:scale(.96) translateY(-6px)}to{opacity:1;transform:scale(1) translateY(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-16px)}to{opacity:1;transform:translate(0)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}@keyframes float{0%,to{transform:translateY(0) rotate(0)}33%{transform:translateY(-8px) rotate(1deg)}66%{transform:translateY(-4px) rotate(-1deg)}}.animate-fadeUp{animation:fadeUp .4s ease both}.animate-fadeIn{animation:fadeIn .25s ease both}.animate-scaleIn{animation:scaleIn .2s var(--spring) both}.spin{animation:spin .8s linear infinite}.pulse{animation:pulse 2s ease-in-out infinite}.navbar{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--navbar-h);display:flex;align-items:center;padding:0 var(--sp-5);background:#070710d1;backdrop-filter:blur(20px) saturate(1.6);-webkit-backdrop-filter:blur(20px) saturate(1.6);border-bottom:1px solid var(--border);transition:background var(--t-base)}[data-theme=light] .navbar{background:#f5f5fce0}.navbar-inner{display:flex;align-items:center;gap:var(--sp-4);width:100%;max-width:1440px;margin:0 auto}.navbar-logo{display:flex;align-items:center;gap:var(--sp-2);text-decoration:none;flex-shrink:0}.navbar-logo-mark{width:28px;height:28px;background:var(--gradient);border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;color:#fff;letter-spacing:-.5px;box-shadow:0 2px 10px var(--accent-glow)}.navbar-logo-text{font-size:15px;font-weight:700;letter-spacing:-.03em;color:var(--text)}.navbar-logo-text span{color:var(--accent-2)}.navbar-divider{width:1px;height:20px;background:var(--border-md);flex-shrink:0}.navbar-nav{display:flex;align-items:center;gap:var(--sp-1)}.nav-link{display:flex;align-items:center;gap:6px;padding:5px 10px;border-radius:var(--r-sm);font-size:13.5px;font-weight:500;color:var(--text-2);text-decoration:none;transition:all var(--t-fast)}.nav-link:hover{color:var(--text);background:var(--bg-hover)}.nav-link.active{color:var(--text);background:var(--bg-active)}.nav-link.active svg{color:var(--accent-2)}.navbar-spacer{flex:1}.navbar-search-btn{display:flex;align-items:center;gap:var(--sp-2);padding:6px 10px 6px 9px;background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-md);color:var(--text-3);font-size:12.5px;cursor:pointer;transition:all var(--t-base);min-width:180px}.navbar-search-btn:hover{border-color:var(--border-md);background:var(--bg-3);color:var(--text-2)}.navbar-search-btn kbd{margin-left:auto}@media (max-width: 768px){.navbar-search-btn{min-width:auto}.navbar-search-btn span,.navbar-search-btn kbd{display:none}}.navbar-actions{display:flex;align-items:center;gap:var(--sp-2);flex-shrink:0}.theme-toggle{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:var(--r-md);background:var(--bg-2);border:1px solid var(--border);color:var(--text-2);cursor:pointer;transition:all var(--t-fast)}.theme-toggle:hover{background:var(--bg-3);color:var(--text);border-color:var(--border-md)}.navbar-hamburger{display:none;align-items:center;justify-content:center;width:34px;height:34px;border-radius:var(--r-md);background:var(--bg-2);border:1px solid var(--border);color:var(--text-2);cursor:pointer}@media (max-width: 640px){.navbar-hamburger{display:flex}.navbar-nav{display:none}}.navbar-mobile-menu{position:fixed;top:var(--navbar-h);left:0;right:0;z-index:99;background:var(--bg-1);border-bottom:1px solid var(--border);padding:var(--sp-3) var(--sp-4) var(--sp-4);animation:fadeUp .2s ease both;display:flex;flex-direction:column;gap:var(--sp-1)}.navbar-mobile-menu .nav-link{padding:10px 12px;font-size:14px}.page-wrapper{padding-top:var(--navbar-h);flex:1;display:flex;flex-direction:column}.hero{position:relative;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;padding:var(--sp-24) var(--sp-6) var(--sp-20);overflow:hidden}.hero-glow{position:absolute;top:-80px;left:50%;transform:translate(-50%);width:600px;height:400px;background:radial-gradient(ellipse,rgba(99,102,241,.14) 0%,transparent 70%);pointer-events:none;z-index:0}.hero-content{position:relative;z-index:1;max-width:680px}.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;background:var(--accent-dim);border:1px solid rgba(99,102,241,.2);border-radius:var(--r-full);font-size:12px;font-weight:600;color:var(--accent-2);letter-spacing:.01em;margin-bottom:var(--sp-6)}.hero-badge-dot{width:6px;height:6px;border-radius:50%;background:var(--accent-2);animation:pulse 2s ease-in-out infinite}.hero-title{font-size:clamp(2.4rem,6vw,4rem);font-weight:800;letter-spacing:-.035em;line-height:1.1;margin-bottom:var(--sp-5)}.hero-subtitle{font-size:clamp(1rem,2vw,1.15rem);color:var(--text-2);line-height:1.7;max-width:520px;margin:0 auto var(--sp-8)}.hero-actions{display:flex;align-items:center;gap:var(--sp-3);justify-content:center;flex-wrap:wrap}.hero-orb{position:absolute;border-radius:50%;pointer-events:none;filter:blur(60px);opacity:.5;animation:float 6s ease-in-out infinite}.hero-orb-1{width:300px;height:300px;background:#6366f126;top:-60px;right:-80px;animation-delay:0s}.hero-orb-2{width:200px;height:200px;background:#a78bfa1f;bottom:20px;left:-40px;animation-delay:-2s}.stats-row{display:flex;align-items:center;justify-content:center;gap:var(--sp-2);flex-wrap:wrap}.stat-pill{display:flex;align-items:center;gap:8px;padding:8px 16px;background:var(--bg-1);border:1px solid var(--border);border-radius:var(--r-full);font-size:13px;transition:border-color var(--t-base)}.stat-pill:hover{border-color:var(--border-md)}.stat-pill-value{font-weight:700;font-size:14px;background:var(--gradient-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stat-pill-label{color:var(--text-2)}.stat-pill-divider{width:1px;height:14px;background:var(--border-md)}.stats-grid{display:grid;gap:var(--sp-4)}.stat-card{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--sp-1);padding:var(--sp-6) var(--sp-4);border-radius:var(--r-xl);text-align:center}.stat-value{font-size:2.2rem;font-weight:800;letter-spacing:-.04em}.stat-label{font-size:12px;color:var(--text-2);font-weight:500;text-transform:uppercase;letter-spacing:.08em}.years-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--sp-4)}.year-card{position:relative;display:flex;flex-direction:column;padding:var(--sp-6);border-radius:var(--r-2xl);background:var(--bg-1);border:1px solid var(--border);cursor:pointer;text-decoration:none;overflow:hidden;transition:all var(--t-base);group:true}.year-card:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--gradient);opacity:0;transition:opacity var(--t-base);border-radius:inherit;z-index:0}.year-card:hover{border-color:var(--border-lg);box-shadow:var(--shadow-md),var(--glow-sm);transform:translateY(-2px)}.year-card:hover:before{opacity:.03}.year-card:active{transform:translateY(0)}.year-card-content{position:relative;z-index:1}.year-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-5)}.year-card-icon{width:44px;height:44px;border-radius:var(--r-lg);background:var(--accent-dim);border:1px solid rgba(99,102,241,.15);display:flex;align-items:center;justify-content:center;color:var(--accent-2)}.year-card-label{font-size:18px;font-weight:700;letter-spacing:-.02em;margin-bottom:4px}.year-card-desc{font-size:13px;color:var(--text-2);margin-bottom:var(--sp-5)}.year-card-subjects{display:flex;flex-wrap:wrap;gap:6px}.subject-chip{padding:3px 9px;background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-full);font-size:11.5px;color:var(--text-2);font-weight:500;transition:all var(--t-fast)}.year-card:hover .subject-chip{background:var(--bg-3);border-color:var(--border-md);color:var(--text)}.year-card-footer{display:flex;align-items:center;justify-content:space-between;margin-top:var(--sp-5);padding-top:var(--sp-4);border-top:1px solid var(--border)}.year-card-arrow{color:var(--text-3);transition:all var(--t-base)}.year-card:hover .year-card-arrow{color:var(--accent-2);transform:translate(4px)}.subjects-section-label{font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--text-3);padding:var(--sp-2) 0 var(--sp-3)}.subjects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:var(--sp-3);margin-bottom:var(--sp-8)}.subject-card{display:flex;align-items:center;gap:var(--sp-3);padding:var(--sp-4) var(--sp-5);background:var(--bg-1);border:1px solid var(--border);border-radius:var(--r-lg);cursor:pointer;text-decoration:none;transition:all var(--t-base)}.subject-card:hover{background:var(--bg-2);border-color:var(--border-md);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.subject-card-icon{width:38px;height:38px;border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;flex-shrink:0}.subject-card-icon.type-a{background:var(--accent-dim);color:var(--accent-2);border:1px solid rgba(99,102,241,.15)}.subject-card-icon.type-b{background:var(--green-dim);color:var(--green);border:1px solid rgba(16,185,129,.15)}.subject-card-info{flex:1;min-width:0}.subject-card-name{font-size:13.5px;font-weight:600;color:var(--text);margin-bottom:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.subject-card-type{font-size:11px;color:var(--text-3);font-weight:500}.subject-card-arrow{color:var(--text-3);transition:all var(--t-fast)}.subject-card:hover .subject-card-arrow{color:var(--accent-2);transform:translate(3px)}.browse-layout{display:flex;align-items:stretch;min-height:calc(100dvh - var(--navbar-h))}.sidebar{width:var(--sidebar-w);flex-shrink:0;border-right:1px solid var(--border);background:var(--bg-1);display:flex;flex-direction:column;position:sticky;top:var(--navbar-h);height:calc(100dvh - var(--navbar-h));overflow:hidden}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:var(--sp-4) var(--sp-4) var(--sp-3);border-bottom:1px solid var(--border);flex-shrink:0}.sidebar-title{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-3)}.sidebar-scroll{flex:1;overflow-y:auto;overflow-x:hidden;padding:var(--sp-2) 0}.sidebar-node{display:flex;align-items:center;gap:6px;width:100%;padding:5px var(--sp-3);font-size:13px;font-weight:500;color:var(--text-2);border-radius:0;cursor:pointer;transition:all var(--t-fast);text-align:left;background:transparent;border:none;position:relative}.sidebar-node:hover{background:var(--bg-hover);color:var(--text)}.sidebar-node.active{background:var(--bg-active);color:var(--accent-2)}.sidebar-node.active:before{content:"";position:absolute;left:0;top:3px;bottom:3px;width:2px;background:var(--accent);border-radius:0 2px 2px 0}.sidebar-chevron{display:flex;align-items:center;justify-content:center;width:14px;height:14px;color:var(--text-3);transition:transform var(--t-fast);flex-shrink:0}.sidebar-node.expanded>.sidebar-chevron{transform:rotate(90deg)}.sidebar-icon{color:inherit;flex-shrink:0;opacity:.7}.sidebar-node.active .sidebar-icon{opacity:1}.sidebar-label{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.sidebar-count{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:16px;padding:0 5px;background:var(--bg-3);border-radius:var(--r-full);font-size:10px;font-weight:600;color:var(--text-3);font-family:var(--font-mono)}.sidebar-section-head{padding:var(--sp-3) var(--sp-4) var(--sp-1);font-size:10.5px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-3)}.sidebar-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;z-index:39;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}@media (max-width: 900px){.sidebar{position:fixed;left:0;top:var(--navbar-h);z-index:40;transform:translate(-100%);transition:transform var(--t-slow);box-shadow:var(--shadow-xl)}.sidebar.mobile-open{transform:translate(0)}.browse-main{width:100%}}.browse-main{flex:1;min-width:0;display:flex;flex-direction:column}.browse-topbar{display:flex;align-items:center;gap:var(--sp-3);padding:var(--sp-4) var(--sp-5);border-bottom:1px solid var(--border);flex-shrink:0;min-height:52px}.browse-topbar-toggle{display:none}@media (max-width: 900px){.browse-topbar-toggle{display:flex}}.browse-content{padding:var(--sp-6) var(--sp-6) var(--sp-12);flex:1}.browse-title-block{margin-bottom:var(--sp-8)}.browse-page-title{font-size:clamp(1.4rem,3vw,1.8rem);font-weight:700;letter-spacing:-.025em;margin-bottom:4px}.browse-page-subtitle{font-size:13.5px;color:var(--text-2)}.folder-toolbar{display:flex;align-items:center;gap:var(--sp-2);margin-bottom:var(--sp-5);flex-wrap:wrap}.folder-toolbar-label{font-size:12px;color:var(--text-3);font-weight:500;margin-right:auto}.view-toggle{display:flex;background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-sm);padding:2px}.view-toggle-btn{display:flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:4px;color:var(--text-3);cursor:pointer;transition:all var(--t-fast);background:transparent;border:none}.view-toggle-btn.active{background:var(--bg-3);color:var(--text)}.folder-grid-view{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--sp-3)}.folder-item-grid{display:flex;flex-direction:column;padding:var(--sp-4);background:var(--bg-1);border:1px solid var(--border);border-radius:var(--r-lg);cursor:pointer;text-decoration:none;transition:all var(--t-base);gap:var(--sp-3)}.folder-item-grid:hover{background:var(--bg-2);border-color:var(--border-md);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.folder-item-icon-wrap{width:40px;height:40px;border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;flex-shrink:0}.folder-item-icon-wrap.folder-icon{background:var(--amber-dim);color:var(--amber);border:1px solid rgba(245,158,11,.15)}.folder-item-icon-wrap.pdf-icon{background:var(--accent-dim);color:var(--accent-2);border:1px solid rgba(99,102,241,.15)}.folder-item-icon-wrap.lessons-icon{background:var(--green-dim);color:var(--green);border:1px solid rgba(16,185,129,.15)}.folder-item-icon-wrap.exams-icon{background:var(--red-dim);color:var(--red);border:1px solid rgba(239,68,68,.15)}.folder-item-icon-wrap.exercises-icon{background:var(--amber-dim);color:var(--amber);border:1px solid rgba(245,158,11,.15)}.folder-item-name{font-size:13px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;line-height:1.35}.folder-item-meta{font-size:11.5px;color:var(--text-3);margin-top:auto}.folder-item-progress{display:flex;flex-direction:column;gap:4px;margin-top:var(--sp-2)}.folder-item-progress-row{display:flex;align-items:center;justify-content:space-between;font-size:10.5px;color:var(--text-3)}.folder-list-view{display:flex;flex-direction:column;gap:2px}.folder-item-list{display:flex;align-items:center;gap:var(--sp-3);padding:9px var(--sp-4);background:transparent;border:1px solid transparent;border-radius:var(--r-md);cursor:pointer;text-decoration:none;transition:all var(--t-fast)}.folder-item-list:hover{background:var(--bg-hover);border-color:var(--border)}.folder-item-list .folder-item-icon-wrap{width:32px;height:32px;border-radius:var(--r-sm)}.folder-item-list-info{flex:1;min-width:0;display:flex;align-items:center;gap:var(--sp-3)}.folder-item-list-info .folder-item-name{display:block;-webkit-line-clamp:unset;white-space:nowrap}.folder-item-list-meta{font-size:11.5px;color:var(--text-3);margin-left:auto;flex-shrink:0;display:flex;align-items:center;gap:var(--sp-4)}.folder-item-list-progress{width:80px}.breadcrumbs{display:flex;align-items:center;gap:2px;flex-wrap:wrap}.breadcrumb-item{display:flex;align-items:center;gap:2px}.breadcrumb-link{display:flex;align-items:center;gap:4px;padding:3px 6px;border-radius:var(--r-xs);font-size:12.5px;font-weight:500;color:var(--text-2);text-decoration:none;transition:all var(--t-fast)}.breadcrumb-link:hover{color:var(--text);background:var(--bg-hover)}.breadcrumb-sep{color:var(--text-3);display:flex;align-items:center}.breadcrumb-current{padding:3px 6px;font-size:12.5px;font-weight:600;color:var(--text)}.continue-reading{padding:var(--sp-3) 0 0}.continue-reading-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-4)}.continue-reading-title{font-size:13px;font-weight:600;color:var(--text-2);display:flex;align-items:center;gap:6px}.continue-reading-list{display:flex;flex-direction:column;gap:var(--sp-2)}.continue-item{display:flex;align-items:center;gap:var(--sp-3);padding:var(--sp-3) var(--sp-4);background:var(--bg-1);border:1px solid var(--border);border-radius:var(--r-lg);text-decoration:none;transition:all var(--t-base);cursor:pointer}.continue-item:hover{background:var(--bg-2);border-color:var(--border-md);transform:translate(2px)}.continue-item-icon{width:36px;height:36px;border-radius:var(--r-sm);background:var(--accent-dim);border:1px solid rgba(99,102,241,.15);display:flex;align-items:center;justify-content:center;color:var(--accent-2);flex-shrink:0}.continue-item-icon.done{background:var(--green-dim);border-color:#10b98126;color:var(--green)}.continue-item-info{flex:1;min-width:0}.continue-item-name{font-size:13px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:3px}.continue-item-path{font-size:11px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.continue-item-right{display:flex;flex-direction:column;align-items:flex-end;gap:5px;flex-shrink:0}.continue-item-pct{font-size:11.5px;font-weight:600;color:var(--text-2);font-family:var(--font-mono)}.continue-item-pct.done{color:var(--green)}.continue-reading-empty{text-align:center;padding:var(--sp-6);color:var(--text-3);font-size:13px}.search-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;background:#000000a6;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:flex;align-items:flex-start;justify-content:center;padding-top:80px;padding:80px var(--sp-4) 0;animation:fadeIn .15s ease both}.search-modal{width:100%;max-width:600px;background:var(--bg-2);border:1px solid var(--border-lg);border-radius:var(--r-2xl);box-shadow:var(--shadow-xl);overflow:hidden;animation:scaleIn .2s var(--spring) both;display:flex;flex-direction:column;max-height:calc(100dvh - 120px)}.search-input-row{display:flex;align-items:center;gap:var(--sp-3);padding:14px var(--sp-5);border-bottom:1px solid var(--border)}.search-icon{color:var(--text-3);flex-shrink:0}.search-input-row input{flex:1;background:transparent;border:none;outline:none;font-size:15px;font-weight:500;color:var(--text);font-family:var(--font)}.search-input-row input::placeholder{color:var(--text-3)}.search-results{flex:1;overflow-y:auto;padding:var(--sp-2) 0;min-height:60px}.search-hint{text-align:center;padding:var(--sp-8) var(--sp-6);color:var(--text-3);font-size:13px}.search-group-label{padding:6px var(--sp-5) 4px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-3)}.search-result-row{display:flex;align-items:center;gap:var(--sp-3);width:100%;padding:8px var(--sp-5);background:transparent;border:none;cursor:pointer;text-align:left;transition:background var(--t-fast);border-radius:0}.search-result-row:hover,.search-result-row.selected{background:var(--bg-hover)}.search-result-row.selected .result-enter{opacity:1}.result-icon{flex-shrink:0}.result-icon.folder{color:var(--amber)}.result-icon.pdf{color:var(--accent-2)}.result-text{flex:1;min-width:0}.result-name{display:block;font-size:13.5px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.result-path{display:block;font-size:11.5px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.result-enter{color:var(--text-3);opacity:0;transition:opacity var(--t-fast);flex-shrink:0}.search-footer{border-top:1px solid var(--border);padding:10px var(--sp-5)}.search-hint-keys{display:flex;align-items:center;gap:var(--sp-4)}.search-hint-key{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--text-3)}.pdf-viewer{display:flex;flex-direction:column;border-radius:var(--r-xl);overflow:hidden;background:var(--bg-1);border:1px solid var(--border)}.pdf-toolbar{display:flex;align-items:center;gap:var(--sp-2);padding:8px var(--sp-4);background:var(--bg-2);border-bottom:1px solid var(--border);flex-wrap:wrap;flex-shrink:0}.pdf-toolbar-group{display:flex;align-items:center;gap:var(--sp-1)}.pdf-toolbar-sep{width:1px;height:20px;background:var(--border-md);margin:0 var(--sp-1);flex-shrink:0}.pdf-page-input{display:flex;align-items:center;gap:4px;padding:4px 8px;background:var(--bg-3);border:1px solid var(--border);border-radius:var(--r-sm);font-size:12px}.pdf-page-input input{background:transparent;border:none;outline:none;width:28px;text-align:center;font-family:var(--font-mono);font-size:12px;color:var(--text)}.pdf-page-sep{color:var(--text-3)}.pdf-zoom-value{font-size:11.5px;color:var(--text-2);min-width:36px;text-align:center}.pdf-progress-wrap{flex:1;max-width:160px;display:flex;flex-direction:column;gap:3px}.pdf-progress-label{font-size:10px;font-family:var(--font-mono);color:var(--text-3);text-align:right}.pdf-canvas-wrap{flex:1;overflow:auto;background:var(--bg);display:flex;align-items:flex-start;justify-content:center;padding:var(--sp-6);min-height:500px}.pdf-canvas{box-shadow:var(--shadow-lg);border-radius:2px}.pdf-status{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--sp-3);color:var(--text-2);font-size:13.5px;padding:var(--sp-16);width:100%}.pdf-status.error{color:var(--red)}.pdf-title-bar{display:flex;align-items:center;gap:var(--sp-3);margin-bottom:var(--sp-5)}.pdf-title-bar h1{font-size:1.25rem;font-weight:700;letter-spacing:-.02em}.pdf-title-icon{width:36px;height:36px;border-radius:var(--r-sm);background:var(--accent-dim);border:1px solid rgba(99,102,241,.2);display:flex;align-items:center;justify-content:center;color:var(--accent-2);flex-shrink:0}.settings-page{max-width:640px;padding:var(--sp-10) var(--sp-6) var(--sp-16)}.settings-page-title{font-size:1.6rem;font-weight:700;letter-spacing:-.025em;margin-bottom:6px}.settings-page-subtitle{font-size:13.5px;color:var(--text-2);margin-bottom:var(--sp-10)}.settings-section{margin-bottom:var(--sp-10)}.settings-section-title{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-3);margin-bottom:var(--sp-3);padding-bottom:var(--sp-2);border-bottom:1px solid var(--border)}.settings-row{display:flex;align-items:center;gap:var(--sp-4);padding:var(--sp-4) var(--sp-5);border-radius:var(--r-lg);background:var(--bg-1);border:1px solid var(--border);margin-bottom:var(--sp-2)}.settings-row-icon{width:34px;height:34px;border-radius:var(--r-md);background:var(--bg-2);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--accent-2);flex-shrink:0}.settings-row-text{flex:1}.settings-row-text h4{font-size:13.5px;font-weight:600;margin-bottom:2px}.settings-row-text p{font-size:12px;color:var(--text-2)}.theme-switch{display:flex;background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-sm);padding:2px}.theme-switch-opt{display:flex;align-items:center;gap:5px;padding:5px 10px;border-radius:4px;font-size:12px;font-weight:600;color:var(--text-2);cursor:pointer;background:transparent;border:none;transition:all var(--t-fast)}.theme-switch-opt.active{background:var(--bg-3);color:var(--text)}.settings-select{padding:6px 10px;background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text);font-family:var(--font);font-size:13px;cursor:pointer;outline:none}.settings-select:focus{border-color:var(--accent)}.footer{border-top:1px solid var(--border);padding:var(--sp-8) var(--sp-6);color:var(--text-3);font-size:12.5px}.footer-inner{max-width:var(--content-max);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);flex-wrap:wrap}.footer-brand{display:flex;align-items:center;gap:var(--sp-2);font-weight:600;color:var(--text-2)}.footer-links{display:flex;gap:var(--sp-5)}.footer-links a{color:var(--text-3);text-decoration:none;transition:color var(--t-fast)}.footer-links a:hover{color:var(--text-2)}.notfound{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;text-align:center;padding:var(--sp-24) var(--sp-6);gap:var(--sp-5)}.notfound-code{font-size:clamp(6rem,18vw,10rem);font-weight:800;letter-spacing:-.06em;background:var(--gradient-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin-bottom:var(--sp-4)}.notfound h2{font-size:1.4rem;font-weight:700}.notfound p{color:var(--text-2);font-size:14px;max-width:400px}.notfound-actions{display:flex;gap:var(--sp-3);flex-wrap:wrap;justify-content:center}@media (max-width: 640px){.years-grid{grid-template-columns:1fr}.subjects-grid{grid-template-columns:1fr 1fr}.folder-grid-view{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.pdf-toolbar{gap:var(--sp-1)}.pdf-toolbar .btn span{display:none}.hero{padding:var(--sp-12) var(--sp-4) var(--sp-12)}.browse-content{padding:var(--sp-4) var(--sp-4) var(--sp-10)}.browse-topbar{padding:var(--sp-3) var(--sp-4)}}@media (max-width: 480px){.subjects-grid{grid-template-columns:1fr}.stats-row{gap:var(--sp-2)}}