:root{--bg:#0b1020;--card:#ffffff;--text:#0f172a;--muted:#64748b;--line:#e2e8f0;--accent1:#06b6d4;--accent2:#8b5cf6}
*{box-sizing:border-box} body{margin:0;font-family:Arial,Helvetica,sans-serif;background:linear-gradient(180deg,#09111f,#0e1a35);color:#fff}
a{text-decoration:none;color:inherit}
.container{max-width:1180px;margin:0 auto;padding:0 18px}
.header{position:sticky;top:0;z-index:20;background:rgba(3,7,18,.82);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08)}
.header-row{display:flex;justify-content:space-between;align-items:center;padding:16px 0;gap:16px}
.brand{display:flex;align-items:center;gap:14px}.logo{width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,var(--accent1),var(--accent2));display:flex;align-items:center;justify-content:center;font-weight:700}
.brand-title{font-size:24px;font-weight:800}.brand-sub{font-size:12px;color:#cbd5e1}
.nav{display:flex;gap:10px;flex-wrap:wrap}.nav a{padding:10px 16px;border-radius:14px;background:rgba(255,255,255,.06)}
.langs{display:flex;gap:8px}.langs a{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.08)}
.hero{padding:42px 0}.hero-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:30px;padding:32px;box-shadow:0 20px 70px rgba(0,0,0,.24)}
.hero h1{font-size:42px;margin:0 0 12px}.hero p{color:#dbeafe;max-width:780px;line-height:1.6}
.grid{display:grid;gap:18px}.cards-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.section{padding:0 0 34px}.section h2{font-size:28px;margin:0 0 16px}
.card{background:#fff;color:var(--text);border-radius:24px;padding:22px;border:1px solid var(--line);box-shadow:0 10px 30px rgba(0,0,0,.08)}
.card .muted{color:var(--muted)}
.footer{margin-top:32px;border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;color:#cbd5e1}
.notice{background:#fff;color:#0f172a;border-radius:22px;padding:20px;border:1px solid var(--line)}
.theme-cyan-violet{--accent1:#06b6d4;--accent2:#8b5cf6}.theme-emerald-blue{--accent1:#10b981;--accent2:#3b82f6}.theme-orange-pink{--accent1:#f97316;--accent2:#ec4899}.theme-blue-indigo{--accent1:#3b82f6;--accent2:#6366f1}.theme-rose-gold{--accent1:#f43f5e;--accent2:#f59e0b}