:root{--navy:#0b1220;--navy-2:#111a2e;--ink:#0f172a;--slate:#475569;--slate-2:#64748b;--line:#e2e8f0;--bg:#f7f9fc;--card:#fff;--blue:#2563eb;--blue-dark:#1d4ed8;--green:#16a34a;--amber:#b45309;--radius:14px;--shadow:0 10px 30px #02081714;--maxw:1080px;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:var(--font);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;line-height:1.55}a{color:inherit;text-decoration:none}h1,h2,h3{letter-spacing:-.02em;line-height:1.2}.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}.narrow{max-width:760px}.site-header{z-index:40;-webkit-backdrop-filter:saturate(140%)blur(8px);backdrop-filter:saturate(140%)blur(8px);background:#0b1220eb;border-bottom:1px solid #ffffff14;position:sticky;top:0}.site-header .bar{justify-content:space-between;align-items:center;height:60px;display:flex}.brand{color:#fff;letter-spacing:-.02em;font-size:18px;font-weight:800}.brand span{color:#7dd3fc}.nav{align-items:center;gap:18px;display:flex}.nav a{color:#cbd5e1;font-size:14px;font-weight:600}.nav a:hover{color:#fff}.site-footer{border-top:1px solid var(--line);color:var(--slate);margin-top:64px;padding:28px 0;font-size:13px}.site-footer .bar{flex-wrap:wrap;justify-content:space-between;gap:16px;display:flex}.btn{cursor:pointer;border:1px solid #0000;border-radius:10px;justify-content:center;align-items:center;gap:8px;padding:12px 20px;font-size:15px;font-weight:700;transition:background .15s,transform 50ms;display:inline-flex}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-dark)}.btn-ghost{border-color:var(--line);color:var(--ink);background:0 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