:root{--bg: #0b0d12;--surface: #121621;--surface-2: #1a1f2d;--border: #272e3e;--text: #e8eaf2;--text-muted: #94a3b8;--primary: #3b82f6;--primary-hover: #60a5fa;--accent: #818cf8;--radius: 10px;--shadow: 0 1px 3px rgba(0, 0, 0, .4)}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;cursor:pointer}.navbar{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--border);background:#0b0d12cc;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.navbar-inner{max-width:1000px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between}.navbar-brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;color:var(--text);text-decoration:none}.navbar-brand:hover{text-decoration:none}.brand-name{color:var(--text)}.brand-suffix{color:var(--primary)}.navbar-links{display:flex;align-items:center;gap:10px}.navbar-link{font-size:14px;color:var(--text-muted);text-decoration:none;border-radius:6px;padding:6px 10px}.navbar-link:hover{color:var(--text);background:var(--surface-2)}.navbar-link.active{color:var(--primary)}.navbar-link.navbar-github{color:var(--text-muted);display:flex;align-items:center;gap:4px}.navbar-lang{background:transparent;border:1px solid var(--border);color:var(--text-muted);font-size:13px;padding:4px 10px;border-radius:6px}.navbar-lang:hover{border-color:var(--primary);color:var(--primary)}.hero{padding:72px 20px 56px;max-width:900px;margin:0 auto;text-align:center}.hero-badge{display:inline-block;font-size:12px;font-weight:600;color:var(--accent);letter-spacing:.08em;margin-bottom:16px}.hero-title{font-size:44px;font-weight:800;line-height:1.1;margin:0 0 16px;letter-spacing:-.02em}.hero-title-emphasis{color:var(--primary)}.hero-subtitle{font-size:17px;color:var(--text-muted);max-width:620px;margin:0 auto 28px}.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:8px;font-size:15px;font-weight:600;text-decoration:none;border:1px solid transparent}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}.section-header{text-align:center;margin-bottom:40px}.section-title{font-size:26px;font-weight:700;margin:0 0 8px;color:var(--text)}.features{padding:56px 20px;max-width:1000px;margin:0 auto}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:border-color .2s,transform .2s}.feature-card:hover{border-color:var(--primary);transform:translateY(-2px)}.feature-icon{font-size:26px;margin-bottom:14px}.feature-title{font-size:17px;font-weight:700;margin:0 0 10px;color:var(--text)}.feature-desc{font-size:14px;color:var(--text-muted);line-height:1.6;margin:0}.how{padding:56px 20px;max-width:900px;margin:0 auto}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}.step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px}.step-number{font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.1em;margin-bottom:12px}.step-title{font-size:17px;font-weight:700;margin:0 0 10px;color:var(--text)}.step-desc{font-size:14px;color:var(--text-muted);line-height:1.6;margin:0}.cta{padding:64px 20px;text-align:center;max-width:700px;margin:0 auto}.cta-title{font-size:28px;font-weight:700;margin:0 0 12px}.cta-desc{font-size:16px;color:var(--text-muted);margin:0 0 24px}.cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.faq{padding:56px 20px;max-width:700px;margin:0 auto}.faq-grid{display:grid;gap:10px}.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.faq-item summary{padding:16px 20px;font-weight:600;font-size:15px;color:var(--text);list-style:none;cursor:pointer}.faq-item summary::-webkit-details-marker{display:none}.faq-item p{padding:0 20px 16px;font-size:14px;color:var(--text-muted);line-height:1.6;margin:0;border-top:1px solid var(--border)}.footer{border-top:1px solid var(--border);margin-top:80px}.footer-inner{max-width:1000px;margin:0 auto;padding:40px 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px}.footer-title{font-size:14px;font-weight:700;color:var(--text);margin:0 0 16px;letter-spacing:.05em;text-transform:uppercase}.footer-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.footer-list a{font-size:14px;color:var(--text-muted);text-decoration:none}.footer-list a:hover{color:var(--primary)}.footer-bottom{max-width:1000px;margin:0 auto;padding:24px 20px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:10px;align-items:center;text-align:center}.footer-copy,.footer-tag{font-size:13px;color:var(--text-muted)}.footer-lang{background:transparent;border:1px solid var(--border);color:var(--text-muted);font-size:12px;padding:3px 8px;border-radius:4px}.footer-lang:hover{border-color:var(--primary);color:var(--primary)}.privacy-page{max-width:760px;margin:0 auto;padding:48px 20px}.privacy-header{text-align:center;margin-bottom:40px}.privacy-header h1{font-size:32px;font-weight:700;margin:0 0 8px}.privacy-date{color:var(--text-muted);font-size:15px}.privacy-content{display:flex;flex-direction:column;gap:32px}.privacy-section h2{font-size:20px;font-weight:700;margin:0 0 12px;color:var(--text)}.privacy-body{font-size:15px;color:var(--text);line-height:1.7}.privacy-body p{margin:0 0 12px}.privacy-body a{color:var(--primary);text-decoration:underline}.privacy-list{list-style:disc;padding-left:20px;margin:0 0 12px;font-size:15px;color:var(--text);line-height:1.7}.privacy-list li{margin-bottom:8px}.privacy-note{font-size:14px;color:var(--text-muted);margin:0;padding-top:8px;border-top:1px solid var(--border)}@media(max-width:640px){.hero-title{font-size:32px}.navbar-inner{flex-direction:column;gap:12px;align-items:flex-start}.navbar-links{width:100%;justify-content:space-between}.footer-inner{grid-template-columns:1fr}}