:root{--bg:#081018;--panel:#101a26;--panel2:#0d1621;--line:#223248;--text:#f4f7fb;--muted:#9db0c7;--accent:#62e6a8;--danger:#ff6b6b;--gold:#ffd166}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#071019,#0a111a 45%,#070c12);color:var(--text);font:15px/1.55 Inter,system-ui,Arial}.wrap{max-width:1180px;margin:auto;padding:0 22px}.nav{height:74px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{font-size:22px;font-weight:900;letter-spacing:1px;color:#fff;text-decoration:none}.brand span{color:var(--accent)}.links{display:flex;gap:14px;align-items:center;flex-wrap:wrap}.links a{color:var(--muted);text-decoration:none}.btn{display:inline-block;padding:10px 15px;border:1px solid var(--line);border-radius:10px;color:#fff;text-decoration:none;background:#111d2a;cursor:pointer}.btn.primary{background:var(--accent);color:#04100b;border-color:transparent;font-weight:800}.btn.gold{background:var(--gold);color:#191300;border-color:transparent;font-weight:800}.hero{padding:90px 0 55px;max-width:850px}.hero h1{font-size:58px;line-height:1.02;margin:14px 0}.hero p{font-size:19px;color:var(--muted)}.tag{font-size:12px;font-weight:800;letter-spacing:.08em;border:1px solid var(--line);padding:5px 8px;border-radius:999px;color:var(--accent)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid var(--line);border-radius:16px;padding:20px}.card h3{margin:10px 0}.muted{color:var(--muted)}.stat{font-size:34px;font-weight:900}.form{max-width:540px;background:var(--panel);border:1px solid var(--line);padding:24px;border-radius:16px}.form label{display:block;margin:13px 0 6px}.form input,.form select,textarea{width:100%;padding:11px;border-radius:9px;border:1px solid var(--line);background:#08111a;color:#fff}.notice{padding:12px 15px;background:#12283a;border:1px solid #26445d;border-radius:10px;margin-top:18px}.price{font-size:38px;font-weight:900}.hard{color:#ff8b8b}.expert{color:#ffd166}.locked{opacity:.65}.progress{height:8px;background:#182434;border-radius:999px;overflow:hidden}.progress i{display:block;height:100%;background:var(--accent)}table{width:100%;border-collapse:collapse}th,td{padding:10px;border-bottom:1px solid var(--line);text-align:left}.section{padding:28px 0}.lab-shell{max-width:900px}.code{background:#050a0f;border:1px solid var(--line);padding:14px;border-radius:10px;font-family:monospace;white-space:pre-wrap}@media(max-width:800px){.grid{grid-template-columns:1fr}.hero h1{font-size:40px}.nav{height:auto;padding:14px 0;gap:14px;align-items:flex-start;flex-direction:column}}