:root{--bg:#f4f6fb;--surface:#fff;--text:#15171f;--text-muted:#5d6470;--border:#dfe3ec;--primary:#7c5cff;--accent:#22d3ee;--grad:linear-gradient(135deg,#7c5cff 0%,#22d3ee 100%);--nav-bg:rgba(244,246,251,.94);--radius:12px}@media (prefers-color-scheme:dark){:root{--bg:#0c0f1a;--surface:#161a26;--text:#e7e9f3;--text-muted:#97a0b5;--border:#2a3142;--primary:#9b85ff;--nav-bg:rgba(12,15,26,.94)}}html[data-theme=dark]{--bg:#0c0f1a;--surface:#161a26;--text:#e7e9f3;--text-muted:#97a0b5;--border:#2a3142;--primary:#9b85ff;--nav-bg:rgba(12,15,26,.94)}html[data-theme=light]{--bg:#f4f6fb;--surface:#fff;--text:#15171f;--text-muted:#5d6470;--border:#dfe3ec;--primary:#7c5cff;--nav-bg:rgba(244,246,251,.94)}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Roboto,Helvetica,Arial,sans-serif;line-height:1.6;transition:background .25s,color .25s}a{color:inherit;text-decoration:none}svg{flex-shrink:0}.navbar{z-index:50;background:var(--nav-bg);border-bottom:1px solid var(--border);backdrop-filter:blur(8px);transition:background .25s;position:sticky;top:0}.nav-inner{justify-content:space-between;align-items:center;height:60px;display:flex}.logo{align-items:center;gap:8px;font-size:1.12rem;font-weight:700;display:flex}.logo svg{width:22px;height:22px}.nav-links{align-items:center;gap:20px;display:flex}.nav-link{color:var(--text-muted);align-items:center;gap:6px;font-weight:500;transition:color .15s;display:flex}.nav-link:hover,.nav-link.active{color:var(--primary)}.nav-link svg{width:16px;height:16px}.theme-btn{border:1px solid var(--border);background:var(--surface);width:36px;height:36px;color:var(--text-muted);cursor:pointer;border-radius:8px;place-items:center;transition:all .15s;display:grid}.theme-btn svg{width:18px;height:18px}.theme-btn:hover{border-color:var(--primary);color:var(--primary)}.theme-btn .icon-sun{display:none}html[data-theme=dark] .theme-btn .icon-sun{display:block}html[data-theme=dark] .theme-btn .icon-moon{display:none}.hero{text-align:center;border-bottom:1px solid var(--border);padding:96px 0 80px;position:relative;overflow:hidden}.hero-inner{z-index:1;position:relative}.hero-title{letter-spacing:-.02em;margin-bottom:14px;font-size:max(2.2rem,min(5vw,3.4rem));font-weight:800}.gradient-text{background:var(--grad);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.hero-subtitle{color:var(--text-muted);margin-bottom:30px;line-height:1.7}.hero-badge{border:1px solid var(--border);background:var(--surface);color:var(--text-muted);border-radius:999px;align-items:center;gap:6px;margin-bottom:18px;padding:5px 12px;font-size:.8rem;display:inline-flex}.hero-badge svg{width:14px;height:14px;color:var(--primary)}.search-bar{max-width:520px;margin:0 auto;position:relative}.search-icon{width:20px;height:20px;color:var(--text-muted);position:absolute;top:50%;left:16px;transform:translateY(-50%)}.search-bar input{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);width:100%;color:var(--text);outline:none;padding:14px 16px 14px 48px;font-size:1rem;transition:border-color .15s}.search-bar input:focus{border-color:var(--primary)}.search-bar input::placeholder{color:var(--text-muted)}.hero-glow{background:var(--grad);opacity:.12;border-radius:50%;width:700px;height:420px;position:absolute;top:-140px;left:50%;transform:translate(-50%)}.section{padding:56px 0}.section-head{text-align:center;margin-bottom:32px}.section-head h2{margin-bottom:6px;font-size:1.5rem;font-weight:700}.section-head p{color:var(--text-muted);font-size:.92rem}.category-list{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.category-chip{border:1px solid var(--border);background:var(--surface);color:var(--text-muted);cursor:pointer;border-radius:999px;align-items:center;gap:6px;padding:8px 18px;font-size:.9rem;font-weight:500;transition:all .15s;display:inline-flex}.category-chip svg{width:16px;height:16px}.category-chip:hover{border-color:var(--primary);color:var(--primary)}.category-chip.active{background:var(--grad);color:#fff;border-color:transparent}.tools-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px;display:grid}.tool-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;gap:12px;padding:22px;transition:transform .15s,border-color .15s;display:flex}.tool-card:hover{border-color:var(--primary);transform:translateY(-3px)}.tool-icon{background:var(--grad);color:#fff;border-radius:10px;place-items:center;width:44px;height:44px;font-size:1.4rem;display:grid}.tool-name{font-size:1.05rem;font-weight:600}.tool-desc{color:var(--text-muted);flex:1;font-size:.88rem;line-height:1.6}.tool-tag{color:var(--primary);background:rgba(124,92,255,.1);border-radius:999px;align-self:flex-start;align-items:center;gap:4px;padding:3px 10px;font-size:.75rem;font-weight:500;display:inline-flex}.empty-state{text-align:center;color:var(--text-muted);padding:72px 20px}.empty-icon{color:var(--text-muted);margin-bottom:14px}.empty-icon svg{opacity:.5;width:56px;height:56px}.empty-state h3{color:var(--text);margin-bottom:6px;font-size:1.2rem}.footer{border-top:1px solid var(--border);margin-top:48px;padding:20px 0}.footer-inner{color:var(--text-muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;font-size:.85rem;display:flex}.footer-links{gap:14px;display:flex}.footer-links a{align-items:center;gap:5px;transition:color .15s;display:inline-flex}.footer-links a:hover{color:var(--primary)}.footer-links svg{width:14px;height:14px}@media (max-width:640px){.section{padding:44px 0}.hero{padding:72px 0 60px}.nav-link span{display:none}}