:root{--bg:#0d1220;--panel:#141c2f;--panel2:#19233a;--text:#f8fafc;--muted:#9fb1cc;--accent:#38bdf8;--accent2:#8b5cf6;--line:#2a3854}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at top left,#203253,#0d1220 42%);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}.top{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 32px;border-bottom:1px solid var(--line);background:rgba(13,18,32,.78);backdrop-filter:blur(14px);position:sticky;top:0;z-index:10}.brand{font-size:22px;font-weight:900}.top div{display:flex;align-items:center;gap:18px}.top form{display:inline}.top button,.btn,button{border:1px solid var(--line);background:#202b45;color:var(--text);padding:10px 14px;border-radius:12px;cursor:pointer}.primary,.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent2));border:0;color:white;font-weight:800}main{max-width:1220px;margin:auto;padding:36px 24px}.hero{display:grid;grid-template-columns:1.4fr .8fr;gap:32px;align-items:center;min-height:70vh}.hero h1{font-size:clamp(42px,7vw,82px);line-height:.95;margin:10px 0}.hero p{font-size:20px;color:var(--muted)}.eyebrow{color:var(--accent);text-transform:uppercase;letter-spacing:.18em;font-size:12px!important;font-weight:800}.panel,.card{background:linear-gradient(180deg,rgba(25,35,58,.96),rgba(20,28,47,.96));border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 24px 70px rgba(0,0,0,.25)}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.grid3 article,.stats div{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:22px}.actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.page{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:24px}.page h1{font-size:48px;margin:0}.page p,.hint{color:var(--muted)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:24px 0}.stats b{font-size:44px;display:block}.stats span{color:var(--muted)}.split{display:grid;grid-template-columns:.8fr 1.2fr;gap:22px}.stack{display:flex;flex-direction:column;gap:12px}input,textarea,select{width:100%;background:#0f1729;color:var(--text);border:1px solid var(--line);border-radius:14px;padding:13px 14px;font:inherit}textarea{resize:vertical}.row{display:block;border:1px solid var(--line);border-radius:16px;padding:14px;margin:10px 0;background:#111a2d}.row span{display:block;color:var(--muted);font-size:14px;margin-top:4px}.builder{display:grid;grid-template-columns:.75fr 1.2fr .75fr;gap:20px;align-items:start}.module-nav{border-left:3px solid var(--accent);padding:8px 0 8px 12px;margin:12px 0}.module-nav span{display:block;color:var(--muted);padding:4px 0}.lesson{background:#10192b;border:1px solid var(--line);border-radius:18px;padding:18px;margin:16px 0}.lesson span{color:var(--accent);font-size:13px;font-weight:800}.player{max-width:980px;margin:auto}.player header{padding:40px;border-radius:28px;background:linear-gradient(135deg,#24365f,#151d32);margin-bottom:20px}.player h1{font-size:58px}.error{background:#5b1a28;color:#fecdd3;padding:12px;border-radius:12px}footer.footer{max-width:1220px;margin:0 auto 32px;padding:20px 24px;color:var(--muted);display:flex;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line)}.legal{max-width:900px;margin:auto}.legal h1{font-size:44px}.legal section{margin:24px 0}.legal li{margin:8px 0}@media(max-width:900px){.hero,.split,.builder,.grid3,.stats{grid-template-columns:1fr}.top{height:auto;align-items:flex-start}.top div{flex-wrap:wrap}.page{display:block}}