:root{--bg:#0b1020;--card:#121a2f;--card2:#18233e;--text:#f7f8fb;--muted:#aab3c8;--accent:#f7c948;--accent2:#ff8a3d;--line:#273451;--max:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:radial-gradient(circle at top right,#17264b 0,#0b1020 34%,#080c18 100%);color:var(--text);line-height:1.6}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}.site-header{max-width:var(--max);margin:auto;padding:22px 24px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:900;letter-spacing:-.03em;font-size:1.2rem}.site-header nav{display:flex;gap:20px;color:var(--muted);font-weight:650}.hero{max-width:900px;margin:70px auto 38px;padding:0 24px;text-align:center}.pill{display:inline-block;padding:7px 12px;border:1px solid #445477;border-radius:99px;color:#dce3f3;font-size:.78rem;font-weight:800;letter-spacing:.08em}.hero h1{font-size:clamp(2.8rem,9vw,6.3rem);line-height:.95;margin:24px 0 18px;letter-spacing:-.065em}.hero h1 span{color:var(--accent)}.hero p{max-width:700px;margin:0 auto;color:var(--muted);font-size:1.16rem}.hero-actions{margin-top:30px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.primary,.secondary,.challenge-actions button{border-radius:14px;padding:14px 18px;border:1px solid var(--line);font-weight:850}.primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#16110b;border:none}.secondary,.challenge-actions button{background:var(--card);color:var(--text)}.challenge-card{max-width:860px;margin:35px auto 80px;padding:28px;display:flex;gap:20px;background:linear-gradient(135deg,#17213a,#10172a);border:1px solid var(--line);border-radius:24px;box-shadow:0 20px 70px #0006}.challenge-icon{font-size:2.2rem}.challenge-card small{color:var(--accent);font-weight:900;letter-spacing:.12em}.challenge-card h2{font-size:clamp(1.45rem,4vw,2.25rem);line-height:1.15;margin:8px 0 18px}.challenge-actions{display:flex;gap:10px;flex-wrap:wrap}.content-section{max-width:var(--max);margin:80px auto;padding:0 24px}.section-heading span{color:var(--accent);font-size:.8rem;font-weight:900;letter-spacing:.12em}.section-heading h2,.prose h2,.faq h2{font-size:clamp(2rem,4vw,3.2rem);letter-spacing:-.04em;line-height:1.05}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.category-card{padding:24px;background:linear-gradient(160deg,var(--card2),var(--card));border:1px solid var(--line);border-radius:18px;transition:.2s transform,.2s border-color}.category-card:hover{transform:translateY(-3px);border-color:#56698f}.category-card b{font-size:1.2rem}.category-card p,.prose p,.faq p,footer p{color:var(--muted)}.prose{max-width:850px}.prose h3{margin-top:35px;font-size:1.4rem}.faq{max-width:850px}.faq details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:12px 0}.faq summary{font-weight:800;cursor:pointer}footer{border-top:1px solid var(--line);max-width:var(--max);margin:90px auto 0;padding:36px 24px 54px;display:flex;justify-content:space-between;gap:20px}.footer-links{display:flex;gap:18px;color:var(--muted)}.page{max-width:850px;margin:50px auto 100px;padding:0 24px}.page h1{font-size:clamp(2.4rem,7vw,4.8rem);letter-spacing:-.055em;line-height:1}.page .intro{font-size:1.12rem;color:var(--muted)}.mini-game{margin:35px 0;padding:24px;border-radius:20px;background:linear-gradient(140deg,var(--card2),var(--card));border:1px solid var(--line)}.mini-game button{padding:13px 16px;border:0;border-radius:12px;background:var(--accent);font-weight:900;color:#17130a}.mini-game h2{font-size:1.8rem}.article{margin-top:50px}.article h2{font-size:1.75rem}.article p{color:var(--muted)}@media(max-width:760px){.site-header nav{display:none}.hero{margin-top:35px}.grid{grid-template-columns:1fr}.challenge-card{margin-left:18px;margin-right:18px}.content-section{margin-top:60px}footer{flex-direction:column}.challenge-card{align-items:flex-start}.hero h1{font-size:3.4rem}}