:root{--bg: #ffffff;--bg-alt: #f5f6f8;--text: #0d1117;--muted: #5b6472;--border: #e6e8ec;--primary: #0a84ff;--primary-press: #0060df;--ok: #34c759;--radius: 18px;--max: 1120px;--shadow: 0 12px 40px rgba(16, 20, 26, .08)}@media (prefers-color-scheme: dark){:root{--bg: #0b0d10;--bg-alt: #101318;--text: #f2f4f7;--muted: #9aa1ab;--border: #232830;--shadow: 0 12px 40px rgba(0,0,0,.5)}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.55}a{color:inherit;text-decoration:none}.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}.site-header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 82%,transparent);-webkit-backdrop-filter:saturate(160%) blur(10px);backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--border)}.header-inner{display:flex;align-items:center;gap:18px;height:64px}.logo{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.3px}.logo .mark{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--primary),#5ac8fa)}.nav{display:flex;gap:6px;margin-left:auto;align-items:center}.nav a{padding:8px 12px;border-radius:10px;color:var(--muted);font-size:14.5px;font-weight:500;transition:color .15s,background .15s}.nav a:hover{color:var(--text);background:var(--bg-alt)}.nav a.active{color:var(--primary)}.btn{display:inline-block;padding:10px 18px;border-radius:11px;font-weight:600;font-size:14.5px;background:var(--primary);color:#fff;border:none;cursor:pointer;transition:transform .1s,background .15s}.btn:hover{background:var(--primary-press)}.btn:active{transform:scale(.97)}.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--border)}.btn.ghost:hover{background:var(--bg-alt)}.menu-btn{display:none;background:none;border:none;font-size:22px;color:var(--text);cursor:pointer}@media (max-width: 780px){.nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--bg);border-bottom:1px solid var(--border);padding:10px 22px}.nav.open{display:flex}.menu-btn{display:block;margin-left:auto}}section{padding:84px 0}.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}.reveal.in{opacity:1;transform:none}.eyebrow{color:var(--primary);font-weight:700;font-size:13px;letter-spacing:1px;text-transform:uppercase}h1.hero-title{font-size:clamp(34px,5.4vw,58px);line-height:1.05;letter-spacing:-1.5px;margin:14px 0 18px;font-weight:800}.hero-sub{font-size:clamp(17px,2.2vw,20px);color:var(--muted);max-width:640px}.hero-cta{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}h2.sec-title{font-size:clamp(26px,3.6vw,38px);letter-spacing:-.8px;margin:12px 0 14px;font-weight:800}.sec-lead{color:var(--muted);max-width:680px;font-size:17px}.bg-alt{background:var(--bg-alt)}.center{text-align:center}.center .sec-lead{margin:0 auto}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;margin-top:34px}.feature{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .2s ease}.feature:hover{transform:translateY(-4px)}.feature .ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:#0a84ff1f;color:var(--primary);font-size:22px;margin-bottom:14px}.feature h3{margin:0 0 6px;font-size:17px}.feature p{margin:0;color:var(--muted);font-size:14.5px}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-top:34px}.step{text-align:left}.step .num{width:38px;height:38px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:700;margin-bottom:12px}.band{background:linear-gradient(135deg,#0a84ff,#30b0c7);color:#fff;border-radius:24px;padding:44px;box-shadow:var(--shadow)}.band h2{color:#fff}.band .sec-lead{color:#ffffffeb}.prose{max-width:760px}.prose h1{font-size:34px;letter-spacing:-.8px}.prose h2{font-size:20px;margin-top:28px}.prose p,.prose li{color:var(--muted)}.site-footer{border-top:1px solid var(--border);background:var(--bg-alt);padding:46px 0 30px;margin-top:20px}.footer-grid{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between}.footer-col h4{font-size:13px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted);margin:0 0 10px}.footer-col a{display:block;padding:4px 0;color:var(--muted);font-size:14px}.footer-col a:hover{color:var(--text)}.footer-bottom{margin-top:30px;color:var(--muted);font-size:13px}.form{max-width:520px}.form .field{margin-bottom:14px}.form label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.form input,.form textarea{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:12px;background:var(--bg);color:var(--text);font:inherit}.form textarea{min-height:120px;resize:vertical}.notice{margin-top:12px;padding:12px 14px;border-radius:12px;background:#34c75924;color:#1a8a3d;font-weight:600}