:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:#17233d;background:#f4f6fb;--navy:#101b35;--blue:#315ee8;--cyan:#4ed8d0;--line:#e0e6f0;--muted:#68748d;--green:#176b50;--red:#a23339}*{box-sizing:border-box}body{margin:0;line-height:1.55}a{color:#315ee8}.wrap{max-width:1080px;margin:auto;padding:0 20px}.nav{background:white;border-bottom:1px solid var(--line)}.navin{min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{font-size:21px;font-weight:850;color:var(--navy);text-decoration:none}.brand span{color:var(--blue)}.links{display:flex;gap:18px;align-items:center;flex-wrap:wrap}.links a{font-weight:700;text-decoration:none}.hero{padding:64px 0;background:radial-gradient(ellipse at 82% 0%,#355ee755,transparent 35%),linear-gradient(120deg,#101b35,#172c55);color:white}.hero h1{font-size:clamp(36px,5vw,56px);line-height:1.08;letter-spacing:-1.6px;max-width:760px;margin:16px 0}.hero p{color:#c6d0e3;font-size:18px;max-width:680px}.eyebrow{color:#a8baff;text-transform:uppercase;letter-spacing:1.3px;font-size:12px;font-weight:850}.button,button{display:inline-block;border:0;background:var(--cyan);color:#10203b;text-decoration:none;font:inherit;font-weight:850;padding:12px 17px;border-radius:10px;cursor:pointer}.button.secondary,button.secondary{background:#e8edfb;color:#1d3e9d}.button.danger,button.danger{background:#fce6e6;color:#8e2029}.button:disabled,button:disabled{opacity:.55;cursor:wait}.section{padding:42px 0}.section h2{font-size:28px;letter-spacing:-.7px;margin:0}.sub,.muted{color:var(--muted)}.alert{background:#fff3d8;color:#765211;border:1px solid #eed49a;padding:14px 16px;border-radius:10px;margin:20px 0}.success{background:#e9f7ef;color:#19583b;border:1px solid #c2e8d0;padding:14px 16px;border-radius:10px}.error{background:#fff0f0;color:#8c2525;border:1px solid #f2c6c6;padding:14px 16px;border-radius:10px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:20px}.card,.panel,.question{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px}.card h3{margin:0 0 6px}.card p{color:var(--muted);font-size:14px}.price{font-size:30px;font-weight:900;color:var(--navy)}.old{text-decoration:line-through;color:#8992a3;font-size:15px;margin-left:7px}.badge{display:inline-block;background:#e7faf4;color:#176b50;border-radius:99px;padding:4px 10px;font-weight:800;font-size:12px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}.stack{display:grid;gap:14px}.panel{margin:24px auto;max-width:760px}.formrow{display:grid;gap:6px;margin:14px 0}label{font-weight:750}input,select{font:inherit;border:1px solid #cbd4e2;border-radius:8px;padding:11px 12px;max-width:100%}input:focus,select:focus,button:focus-visible,a:focus-visible{outline:3px solid #88a5ff;outline-offset:2px}.full{width:100%}.price-row{display:flex;align-items:baseline;gap:4px}.chapter{padding:16px;border:1px solid var(--line);border-radius:10px;background:#fff;display:flex;justify-content:space-between;align-items:center;gap:12px}.chapter small{display:block;color:var(--muted)}.options{display:grid;gap:9px;margin:18px 0}.option{display:flex;gap:12px;text-align:left;width:100%;background:#f8f9fc;border:1px solid #dce3ef;border-radius:10px;padding:14px;cursor:pointer;color:#1a2741}.option.selected{background:#eaf0ff;border-color:#5276ea}.option.correct{background:#e8f7ef;border-color:#69b287}.option.wrong{background:#fff0f0;border-color:#d78f8f}.qhead{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}.qnav{display:flex;gap:8px;flex-wrap:wrap}.qnav button{padding:7px 10px;background:#e8edfb}.qnav button.answered{background:#c8f0df}.qnav button.flagged{box-shadow:inset 0 0 0 2px #edb641}.timer{font-size:20px;font-weight:850;color:var(--navy)}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:10px;vertical-align:top}th{background:#f5f7fb}footer{padding:28px 0;background:var(--navy);color:#c6d0e3;font-size:13px;margin-top:32px}footer a{color:white}.notice{font-size:13px;color:var(--muted)}.hide{display:none!important}@media(max-width:720px){.cards,.grid2{grid-template-columns:1fr}.hero{padding:48px 0}.links{gap:10px;font-size:14px}.chapter{align-items:flex-start;flex-direction:column}table{display:block;overflow:auto}}