@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;700&family=Source+Sans+3:wght@600;700&display=swap');
:root{--ink:#17324d;--ink-soft:#41566a;--gold:#d9a441;--paper:#f6f4ef;--surface:#fffdf9;--line:#d9e0e5;--success:#287a5d;--success-bg:#e7f3ed;--muted:#71808c}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--paper);color:var(--ink);font-family:'DM Sans',sans-serif}body{display:flex;justify-content:center}.app-shell{width:min(100%,980px);min-height:100vh;padding:28px 24px 40px}.screen{min-height:calc(100vh - 68px);display:flex;flex-direction:column}.hidden{display:none!important}.start-screen,.result-screen{align-items:center;justify-content:center;text-align:center;background:var(--ink);border-radius:24px;padding:60px 40px;color:#fff;box-shadow:0 18px 50px rgba(23,50,77,.18)}.eyebrow{letter-spacing:.16em;font-size:12px;font-weight:700;color:var(--gold)}h1{font-family:'Source Sans 3',sans-serif;font-size:clamp(42px,7vw,78px);line-height:.98;margin:18px 0 22px;letter-spacing:-.04em}h1 span{color:#e4c26f}.lead{max-width:590px;color:#dbe4ea;font-size:18px;line-height:1.55;margin:0 auto 26px}.start-meta{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin:0 0 34px}.start-meta span{border:1px solid rgba(255,255,255,.22);padding:9px 15px;border-radius:999px;color:#e6edf2;font-size:13px}.primary-button{border:0;border-radius:12px;padding:14px 22px;background:var(--gold);color:var(--ink);font:700 16px 'DM Sans',sans-serif;cursor:pointer;transition:transform .15s ease,filter .15s ease}.primary-button:hover{filter:brightness(1.07);transform:translateY(-1px)}.primary-button span{margin-left:10px}.quiz-screen{padding:8px 0}.quiz-header{display:flex;justify-content:space-between;align-items:end;gap:20px;padding:8px 0 18px;border-bottom:1px solid var(--line)}.counter{margin:8px 0 0;color:var(--ink-soft);font-size:15px}.score-pill{background:var(--ink);color:#fff;border-radius:999px;padding:10px 16px;font-size:14px}.score-pill strong{color:var(--gold);font-size:19px;margin-left:6px}.progress-track{height:8px;background:#e5e9eb;border-radius:20px;margin:22px 0 30px;overflow:hidden}.progress-bar{height:100%;width:0;background:var(--gold);transition:width .25s ease}.question-panel{background:var(--surface);border:1px solid var(--line);border-top:6px solid var(--ink);border-radius:18px;padding:clamp(25px,5vw,54px);box-shadow:0 10px 30px rgba(23,50,77,.06);flex:1}.question-number{color:var(--gold);font-weight:700;font-size:14px;letter-spacing:.1em}.question-panel h2{font-family:'Source Sans 3',sans-serif;font-size:clamp(26px,4vw,42px);line-height:1.15;color:var(--ink);margin:18px 0 34px;max-width:850px}.options{display:grid;grid-template-columns:1fr 1fr;gap:14px}.option-button{border:1px solid #cbd5dc;background:#fff;color:var(--ink);border-radius:12px;padding:17px;text-align:left;font:500 17px/1.35 'DM Sans',sans-serif;cursor:pointer;min-height:62px}.option-button:hover:not(:disabled){border-color:var(--gold);background:#fffaf0}.option-button:disabled{cursor:default}.option-button.correct{border-color:var(--success);background:var(--success-bg);color:var(--success);font-weight:700}.option-button.incorrect{border-color:#b7c0c6;background:#f0f2f3;color:#687780}.feedback{min-height:32px;margin-top:22px;font-weight:700;font-size:16px;color:var(--success)}.quiz-actions{display:flex;justify-content:flex-end;padding-top:22px}.result-score{font-family:'Source Sans 3',sans-serif;color:var(--gold);font-size:110px;line-height:1;margin:8px 0 22px}.result-score small{font-size:38px;color:#dbe4ea}.result-screen .lead{margin-bottom:32px}@media(max-width:700px){.app-shell{padding:14px}.screen{min-height:calc(100vh - 42px)}.start-screen,.result-screen{padding:40px 22px;border-radius:18px}.quiz-header{align-items:start}.options{grid-template-columns:1fr}.question-panel{padding:26px 20px}.question-panel h2{font-size:30px}.option-button{font-size:16px}.score-pill{padding:8px 12px}}
.brand-footer{text-align:center;color:var(--muted);font-size:12px;letter-spacing:.02em;padding:12px 0 0}.brand-footer a{color:var(--ink);font-weight:700;text-decoration:none}.brand-footer a:hover{text-decoration:underline}