:root{color-scheme:dark;--bg:#061426;--surface:#0d2038;--surface2:#102844;--line:#24486e;--text:#e8f1ff;--muted:#a8bad0;--accent:#43d9ff;--ok:#4ade80;--bad:#fb7185}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 20% 0,#12345a 0,#061426 34rem);color:var(--text);font:16px/1.65 system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}main{max-width:1050px;margin:auto;padding:22px 18px 70px}nav{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:34px}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.hero{text-align:center;padding:26px 0 34px}.eyebrow{display:inline-block;color:#72ddff;font-size:.76rem;font-weight:900;letter-spacing:.12em}.hero h1{font-size:clamp(2.3rem,6vw,4.5rem);line-height:1.02;margin:12px 0}.hero p{max-width:760px;margin:0 auto;color:var(--muted);font-size:1.08rem}.badges{display:flex;justify-content:center;gap:9px;flex-wrap:wrap;margin-top:22px}.badges span{border:1px solid var(--line);background:var(--surface2);border-radius:999px;padding:7px 12px;color:#cde9ff;font-weight:750}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.card{background:#0d2038f0;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 18px 55px #0000002e}.card h2{margin-top:0}.card li{margin:8px 0;color:var(--muted)}.exam-card{margin-top:18px}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start}.status{padding:7px 11px;border-radius:999px;background:#102d4b;color:#bfe7ff;font-weight:750}.status.error-status{background:#3b1723;color:#ffd7df}.progress{display:flex;justify-content:space-between;gap:12px;color:var(--muted);margin-bottom:18px}.options{display:grid;gap:10px;margin:22px 0}.option{width:100%;text-align:left;border:1px solid #315b7e;border-radius:13px;background:#081a2c;color:var(--text);padding:13px 15px;font:inherit;cursor:pointer}.option:hover{border-color:var(--accent);transform:translateY(-1px)}.option:disabled{cursor:default;transform:none}.option.selected{border-color:#43d9ff;background:#102d4b}.primary,.secondary{display:inline-block;border:1px solid #28627a;border-radius:12px;padding:11px 16px;font:inherit;font-weight:850;cursor:pointer;text-decoration:none}.primary{background:#1677ff;color:#fff}.secondary{background:#102d4b;color:#d8edff}.feedback{min-height:28px}.result{border:1px solid #2b7d50;background:#0d2b20;border-radius:16px;padding:18px}.notice{margin-top:18px}.notice p{color:var(--muted)}.verify-input{display:block;width:100%;margin:10px 0 16px;padding:12px;border-radius:10px;border:1px solid #315b7e;background:#061426;color:#e8f1ff;font:inherit}[hidden]{display:none!important}@media(max-width:760px){main{padding:16px 12px 50px}.grid{grid-template-columns:1fr}.section-head{display:block}.status{display:inline-block;margin-top:10px}.hero h1{font-size:2.6rem}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}