@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap";:root{--color-bg: #fafbfc;--color-text: #111827;--color-text-secondary: #6b7280;--color-accent: #2563eb;--color-accent-light: #eff6ff;--color-border: #e5e7eb;--color-card-bg: #ffffff;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;--max-width: 1080px;--radius: 12px;--shadow-sm: 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 12px rgba(0,0,0,.06);--shadow-lg: 0 8px 24px rgba(0,0,0,.08)}*{margin:0;padding:0;box-sizing:border-box}html{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);line-height:1.6}body{min-height:100vh;display:flex;flex-direction:column}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}.nav{border-bottom:1px solid var(--color-border);padding:0 1.5rem;position:sticky;top:0;background:#ffffffd9;backdrop-filter:blur(12px);z-index:100}.nav-inner{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:60px}.nav-logo{font-family:var(--font-mono);font-weight:700;font-size:1.2rem;color:var(--color-text);letter-spacing:-.5px}.nav-logo:hover{text-decoration:none}.nav-logo span{color:var(--color-accent)}.nav-links{display:flex;gap:1.5rem;list-style:none}.nav-links a{color:var(--color-text-secondary);font-size:.9rem;font-weight:500;transition:color .2s}.nav-links a:hover{color:var(--color-accent);text-decoration:none}.nav-links a.active{color:var(--color-accent);font-weight:600}.hero{max-width:var(--max-width);margin:0 auto;padding:5rem 1.5rem 3rem;text-align:center}.hero h1{font-family:var(--font-mono);font-size:3rem;font-weight:800;letter-spacing:-1.5px;margin-bottom:.75rem;background:linear-gradient(135deg,var(--color-text) 0%,var(--color-accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero p{color:var(--color-text-secondary);font-size:1.15rem;max-width:520px;margin:0 auto 2rem}.search-box{max-width:420px;margin:0 auto;position:relative}.search-box input{width:100%;padding:.75rem 1rem .75rem 2.75rem;border:1px solid var(--color-border);border-radius:8px;font-size:.95rem;outline:none;transition:border-color .2s,box-shadow .2s;background:var(--color-card-bg)}.search-box input:focus{border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-light)}.search-box:before{content:"⌕";position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--color-text-secondary);font-size:1.1rem}.section{max-width:var(--max-width);margin:0 auto;padding:2rem 1.5rem}.section-title{font-size:1.3rem;font-weight:700;margin-bottom:1.5rem;display:flex;align-items:center;gap:.5rem}.section-title:before{content:"";display:inline-block;width:4px;height:1.2em;background:var(--color-accent);border-radius:2px}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.25rem}.card{border:1px solid var(--color-border);border-radius:var(--radius);padding:1.5rem;transition:box-shadow .2s,transform .15s;background:var(--color-card-bg);display:flex;flex-direction:column;box-shadow:var(--shadow-sm)}.card-hidden{display:none}.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.card-meta{display:flex;align-items:center;gap:.75rem;margin-bottom:.75rem;font-size:.8rem;color:var(--color-text-secondary)}.card-tag{background:var(--color-accent-light);color:var(--color-accent);padding:.15rem .55rem;border-radius:4px;font-weight:600;font-size:.75rem}.card h3{font-size:1.1rem;font-weight:700;margin-bottom:.5rem;line-height:1.4}.card h3 a{color:var(--color-text)}.card h3 a:hover{color:var(--color-accent);text-decoration:none}.card p{color:var(--color-text-secondary);font-size:.9rem;line-height:1.6;flex:1}.tags{display:flex;flex-wrap:wrap;gap:.5rem}.tag{display:inline-block;padding:.4rem 1rem;border:1px solid var(--color-border);border-radius:999px;font-size:.85rem;color:var(--color-text-secondary);transition:all .2s;cursor:pointer}.tag:hover{border-color:var(--color-accent);color:var(--color-accent);background:var(--color-accent-light);text-decoration:none}.tag.active{border-color:var(--color-accent);background:var(--color-accent);color:#fff}.footer{margin-top:auto;border-top:1px solid var(--color-border);padding:2rem 1.5rem;text-align:center;color:var(--color-text-secondary);font-size:.85rem}.footer a{color:var(--color-text-secondary);margin:0 .5rem}.footer a:hover{color:var(--color-accent)}.busuanzi{margin-top:.5rem;font-size:.8rem;color:var(--color-text-secondary)}.busuanzi-sep{margin:0 .5rem}.load-more-spinner{text-align:center;padding:1.5rem 0;color:var(--color-text-secondary);font-size:.9rem}.article-content{max-width:var(--max-width);margin:0 auto;padding:3rem 1.5rem}.article-header{text-align:center;margin-bottom:2.5rem;padding-bottom:2rem;border-bottom:1px solid var(--color-border)}.article-header h1{font-size:2rem;font-weight:800;line-height:1.3;margin-bottom:.75rem}.article-excerpt{color:var(--color-text-secondary);font-size:1.1rem;max-width:600px;margin:0 auto}.prose{max-width:720px;margin:0 auto;line-height:1.8}.prose h2{font-size:1.5rem;font-weight:700;margin:2.5rem 0 1rem;padding-bottom:.4rem;border-bottom:1px solid var(--color-border)}.prose h3{font-size:1.2rem;font-weight:700;margin:2rem 0 .75rem}.prose p{margin-bottom:1rem}.prose ul,.prose ol{margin:0 0 1rem 1.5rem}.prose li{margin-bottom:.35rem}.prose code{font-family:var(--font-mono);background:var(--color-card-bg);padding:.15rem .4rem;border-radius:4px;font-size:.88em}.prose pre{background:#1e293b;color:#e2e8f0;padding:1.25rem;border-radius:8px;overflow-x:auto;margin:1.25rem 0;font-size:.9rem;line-height:1.6}.prose pre code{background:none;padding:0;color:inherit}.prose blockquote{border-left:4px solid var(--color-accent);padding:.75rem 1rem;margin:1.25rem 0;background:var(--color-accent-light);border-radius:0 6px 6px 0;color:var(--color-text-secondary)}.prose a{color:var(--color-accent)}.prose strong{font-weight:700}.article-footer{max-width:720px;margin:3rem auto 0;padding-top:1.5rem;border-top:1px solid var(--color-border)}.article-footer a{color:var(--color-text-secondary);font-weight:500}.article-footer a:hover{color:var(--color-accent)}.intro-card{background:linear-gradient(135deg,#eff6ff,#f0fdf4);border:1px solid #dbeafe;border-radius:var(--radius);padding:2.5rem}.intro-card h2{font-size:1.3rem;font-weight:700;margin-bottom:.75rem}.intro-card>p{color:var(--color-text-secondary);font-size:.95rem;line-height:1.8;max-width:700px}.intro-stats{display:flex;gap:2.5rem;margin-top:1.5rem}.stat{display:flex;flex-direction:column}.stat-num{font-size:1.8rem;font-weight:800;color:var(--color-accent);line-height:1}.stat-label{font-size:.8rem;color:var(--color-text-secondary);margin-top:.25rem}.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1rem}.category-card{background:var(--color-card-bg);border:1px solid var(--color-border);border-radius:var(--radius);padding:1.5rem;transition:box-shadow .2s,transform .15s,border-color .2s;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;text-decoration:none;color:inherit;position:relative;overflow:hidden}.category-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--cat-color, var(--color-accent))}.category-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--cat-color, var(--color-accent));text-decoration:none}.category-icon{font-size:2rem;margin-bottom:.75rem}.category-card h3{font-size:1.05rem;font-weight:700;margin-bottom:.4rem;color:var(--color-text)}.category-card p{font-size:.82rem;color:var(--color-text-secondary);line-height:1.6;flex:1}.category-count{display:inline-block;margin-top:.75rem;font-size:.75rem;font-weight:600;color:var(--cat-color, var(--color-accent));background:color-mix(in srgb,var(--cat-color, var(--color-accent)) 8%,transparent);padding:.2rem .6rem;border-radius:999px;width:fit-content}.featured-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1rem}.featured-card{background:var(--color-card-bg);border:1px solid var(--color-border);border-radius:var(--radius);padding:1.5rem;transition:box-shadow .2s,transform .15s;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;text-decoration:none;color:inherit}.featured-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);text-decoration:none}.featured-meta{display:flex;align-items:center;gap:.75rem;margin-bottom:.75rem;font-size:.8rem;color:var(--color-text-secondary)}.featured-card h3{font-size:1.05rem;font-weight:700;margin-bottom:.5rem;line-height:1.4;color:var(--color-text)}.featured-card:hover h3{color:var(--color-accent)}.featured-card p{font-size:.85rem;color:var(--color-text-secondary);line-height:1.6;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.featured-link{display:inline-block;margin-top:.75rem;font-size:.85rem;font-weight:600;color:var(--color-accent)}.topics-cloud{display:flex;flex-wrap:wrap;gap:.6rem}.topic-tag{display:inline-flex;align-items:center;gap:.35rem;padding:.45rem 1rem;border:1px solid var(--color-border);border-radius:999px;font-size:.85rem;color:var(--color-text-secondary);background:var(--color-card-bg);transition:all .2s;text-decoration:none;box-shadow:var(--shadow-sm)}.topic-tag:hover{border-color:var(--color-accent);color:var(--color-accent);background:var(--color-accent-light);text-decoration:none}.topic-count{font-size:.7rem;font-weight:700;background:var(--color-accent-light);color:var(--color-accent);padding:.1rem .4rem;border-radius:999px}.view-all{text-align:center;margin-top:2rem}.btn-view-all{display:inline-block;padding:.65rem 1.8rem;border:1px solid var(--color-border);border-radius:8px;font-size:.9rem;font-weight:600;color:var(--color-text-secondary);background:var(--color-card-bg);transition:all .2s;text-decoration:none}.btn-view-all:hover{border-color:var(--color-accent);color:var(--color-accent);background:var(--color-accent-light);text-decoration:none}@media(max-width:640px){.hero h1{font-size:2rem}.hero p{font-size:1rem}.card-grid{grid-template-columns:1fr}.category-grid{grid-template-columns:1fr 1fr}.featured-grid{grid-template-columns:1fr}.nav-links{gap:1rem}.intro-stats{gap:1.5rem}.intro-card{padding:1.5rem}}