:root{--bg:#0f1724;--panel:#162134;--line:rgba(148,176,214,.18);--text:#cdd9e8;--muted:#8fa2ba;--white:#f4f8fd;--accent:#4da3ff;--accent2:#7c6cff}
:root[data-theme="light"]{--bg:#e9eef6;--panel:#f6f9fd;--line:rgba(20,40,80,.18);--text:#22324a;--muted:#4a5c75;--white:#0a1424;--accent:#165fc0;--accent2:#6a55ec}
*{box-sizing:border-box}
body{margin:0;background:radial-gradient(900px 420px at 15% -5%,rgba(124,108,255,.22),transparent 60%),radial-gradient(800px 400px at 100% 0,rgba(34,211,238,.12),transparent 60%),var(--bg);color:var(--text);font:17px/1.65 "Segoe UI",system-ui,-apple-system,Roboto,sans-serif}
a{color:var(--accent)}a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
.top{border-bottom:1px solid var(--line);background:rgba(15,23,36,.35);backdrop-filter:blur(10px)}
.top .wrap{max-width:1100px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;min-height:62px}
.brand{display:flex;align-items:center;gap:10px;color:var(--white);text-decoration:none;font-weight:800}
.top nav a{color:var(--muted);text-decoration:none;margin-left:18px;font-weight:600;font-size:15px}.top nav a:hover{color:var(--white)}
.crumbs{margin:26px 0 6px;font-size:14px;color:var(--muted)}.crumbs a{color:var(--muted)}
h1{font-size:clamp(32px,5vw,50px);line-height:1.08;letter-spacing:-.025em;color:var(--white);margin:0 0 16px}
h2{font-size:26px;letter-spacing:-.015em;color:var(--white);margin:0 0 12px}
.lead{font-size:20px;color:var(--text);max-width:60ch}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0 10px}
.btn{display:inline-block;padding:13px 22px;border-radius:12px;font-weight:800;text-decoration:none;font-size:16px}
.btn.go{background:linear-gradient(100deg,var(--accent2),var(--accent));color:#fff}
.btn.alt{background:var(--panel);border:1px solid var(--line);color:var(--white)}
section{margin:44px 0}
ul,ol{padding-left:22px}li{margin:6px 0}
.faq details{border:1px solid var(--line);border-radius:12px;background:var(--panel);margin-top:10px;padding:0 18px}
.faq summary{cursor:pointer;font-weight:700;color:var(--white);padding:14px 0}
.faq details p{margin:0 0 14px}
.links{list-style:none;padding:0;display:flex;gap:10px;flex-wrap:wrap}
.links a{display:inline-block;padding:9px 16px;border:1px solid var(--line);border-radius:999px;background:var(--panel);text-decoration:none;font-weight:700}
.foot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:30px 20px 44px;margin-top:30px;border-top:1px solid var(--line);font-size:14px;color:var(--muted);max-width:1100px}
@media(max-width:560px){.top nav a{margin-left:12px;font-size:14px}}