:root{--bg-primary:#fcfcfc;--bg-secondary:#ffffff;--bg-tertiary:#f8fafc;--bg-navbar:rgba(255,255,255,0.7);--bg-input:rgba(255,255,255,0.8);--text-primary:#111111;--text-secondary:#333333;--text-muted:#555555;--text-footer:#777777;--border-color:#e2e8f0;--border-color-hover:#cbd5e1;--border-color-light:rgba(0,0,0,0.05);--border-footer:#eaeaea;--shadow-sm:0 4px 6px -1px rgba(0,0,0,0.05),0 2px 4px -1px rgba(0,0,0,0.03);--shadow-md:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -2px rgba(0,0,0,0.05);--focus-shadow:0 0 0 3px rgba(203,213,225,0.5);--brand-color:#000000;--topic-bg:#EEF2FF;--topic-bg-hover:#E0E7FF;--topic-text:#4F46E5;--topic-text-hover:#4338CA;} [data-theme="dark"]{--bg-primary:#121212;--bg-secondary:#1e1e1e;--bg-tertiary:#2d2d2d;--bg-navbar:rgba(18,18,18,0.8);--bg-input:rgba(30,30,30,0.8);--text-primary:#fcfcfc;--text-secondary:#d1d1d1;--text-muted:#a0a0a0;--text-footer:#888888;--border-color:#333333;--border-color-hover:#555555;--border-color-light:rgba(255,255,255,0.05);--border-footer:#333333;--shadow-sm:0 4px 6px -1px rgba(0,0,0,0.3),0 2px 4px -1px rgba(0,0,0,0.2);--shadow-md:0 10px 15px -3px rgba(0,0,0,0.5),0 4px 6px -2px rgba(0,0,0,0.3);--focus-shadow:0 0 0 3px rgba(85,85,85,0.5);--brand-color:#ffffff;--topic-bg:#2d3748;--topic-bg-hover:#4a5568;--topic-text:#9fa6b2;--topic-text-hover:#cbd5e1;} body{margin:0;padding:0;display:flex;flex-direction:column;min-height:100vh;font-family:'Inter',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--text-secondary);background-color:var(--bg-primary);line-height:1.6;transition:background-color 0.3s ease,color 0.3s ease;} h1,h2,h3,h4{color:var(--text-primary);margin-bottom:1rem;font-weight:600;} a{text-decoration:none;color:inherit;} .navbar{padding:1rem 0;position:sticky;top:0;z-index:50;background-color:var(--bg-navbar);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color-light);transition:background-color 0.3s ease,border-color 0.3s ease;} .brand{font-size:1.5rem;font-weight:700;letter-spacing:-0.025em;color:var(--brand-color);} .nav-link{font-weight:500;color:var(--text-muted);transition:color 0.2s;} .nav-link:hover{color:var(--brand-color);} .search-input{width:100%;padding:0.6rem 1.2rem;border:1px solid var(--border-color);border-radius:20px;background-color:var(--bg-input);font-family:inherit;font-size:0.95rem;color:var(--text-secondary);transition:all 0.3s cubic-bezier(0.4,0,0.2,1);outline:none;} .search-input:focus{border-color:var(--border-color-hover);box-shadow:var(--focus-shadow);background-color:var(--bg-secondary);} main{flex:1;padding:3rem 0;width:100%;} footer{padding:2rem 0;text-align:center;margin-top:auto;border-top:1px solid var(--border-footer);color:var(--text-footer);font-size:0.875rem;transition:border-color 0.3s ease,color 0.3s ease;} .search-highlight{background-color:rgba(255,235,59,0.4);color:inherit;border-radius:2px;padding:0 2px;} [data-theme="dark"] .search-highlight{background-color:rgba(255,235,59,0.25);color:#ffd54f;} .theme-toggle-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:1.25rem;padding:0.5rem;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background-color 0.2s,color 0.2s;margin-left:1rem;} .theme-toggle-btn:hover{background-color:var(--border-color-light);color:var(--brand-color);} @keyframes fadeIn{from{opacity:0;transform:translateY(10px);} to{opacity:1;transform:translateY(0);} } .fade-in{animation:fadeIn 0.5s ease-out forwards;} .container{max-width:1200px;margin:0 auto;padding:0 1rem;} .flex{display:flex;} .flex-col{flex-direction:column;} .items-center{align-items:center;} .justify-center{justify-content:center;} .justify-between{justify-content:space-between;} .gap-1{gap:0.5rem;} .gap-2{gap:1rem;} .gap-4{gap:2rem;} .flex-wrap{flex-wrap:wrap;} .w-full{width:100%;} .search-form{flex:1;max-width:400px;margin:0 2rem;} .card{background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:0.75rem;box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;transition:all 0.3s cubic-bezier(0.4,0,0.2,1);} .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--border-color-hover);} .card-header{padding:1.25rem 1.5rem;border-bottom:1px solid var(--border-color);font-weight:600;font-size:1.125rem;color:var(--text-primary);} .card-body{padding:1.5rem;flex:1;display:flex;justify-content:center;align-items:center;text-align:center;} .card-footer{padding:1rem 1.5rem;border-top:1px solid var(--border-color);background-color:var(--bg-tertiary);} .grid{display:grid;gap:1.5rem;} .grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr));} .grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr));} .grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr));} @media (max-width:768px){.grid-cols-2,.grid-cols-3{grid-template-columns:repeat(1,minmax(0,1fr));} .search-form{flex:1 1 100%;max-width:100%;margin:1rem 0 0 0;order:3;} } table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:0.95rem;color:var(--text-secondary);border:1px solid var(--border-color);border-radius:6px;overflow-x:auto;display:block;white-space:nowrap;} th,td{padding:0.75rem 1rem;border:1px solid var(--border-color);text-align:left;} th{background-color:var(--bg-tertiary);font-weight:600;color:var(--text-primary);} tr:nth-child(even){background-color:rgba(0,0,0,0.02);} [data-theme="dark"] tr:nth-child(even){background-color:rgba(255,255,255,0.02);} tr:hover{background-color:var(--topic-bg);} [data-theme="dark"] tr:hover{background-color:var(--topic-bg-hover);} .topic-content{font-size:1.05rem;line-height:1.7;color:var(--text-secondary);} .topic-content h1,.topic-content h2,.topic-content h3,.topic-content h4{color:var(--text-primary);margin-top:2.5rem;margin-bottom:1rem;border-bottom:1px solid var(--border-color-light);padding-bottom:0.5rem;} .topic-content h1{font-size:2.25rem;border-bottom:2px solid var(--border-color);} .topic-content h2{font-size:1.75rem;} .topic-content h3{font-size:1.35rem;border-bottom:none;} .topic-content h4{font-size:1.15rem;border-bottom:none;} .topic-content p{margin-bottom:1.25rem;} .topic-content ul,.topic-content ol{margin-bottom:1.5rem;padding-left:2rem;} .topic-content li{margin-bottom:0.5rem;} .topic-content li > p{margin-bottom:0.5rem;} .topic-content ul ul,.topic-content ol ol,.topic-content ul ol,.topic-content ol ul{margin-top:0.5rem;margin-bottom:0;padding-left:1.5rem;} .topic-content code{background-color:var(--bg-tertiary);color:#e83e8c;padding:0.2rem 0.4rem;border-radius:4px;font-family:'Courier New',Courier,monospace;font-size:0.9em;border:1px solid var(--border-color);} [data-theme="dark"] .topic-content code{color:#ff79c6;} .topic-content pre{background-color:#1e1e1e;border:1px solid var(--border-color);padding:1.25rem;border-radius:8px;overflow-x:auto;margin-bottom:1.5rem;} [data-theme="dark"] .topic-content pre{background-color:#0d0d0d;} .topic-content pre code{background-color:transparent;color:#d4d4d4;padding:0;border:none;border-radius:0;font-size:0.95rem;} .topic-content blockquote{border-left:4px solid var(--topic-text);padding-left:1rem;margin-left:0;margin-right:0;margin-bottom:1.5rem;color:var(--text-muted);font-style:italic;background-color:rgba(0,0,0,0.02);padding:1rem 1rem 1rem 1.5rem;border-radius:0 8px 8px 0;} [data-theme="dark"] .topic-content blockquote{background-color:rgba(255,255,255,0.02);} .topic-content hr{border:0;border-top:2px dashed var(--border-color);margin:3rem 0;}