:root{--bg:#f4f7f6;--card:#fff;--ink:#17322c;--muted:#6f817c;--line:#dfe8e5;--accent:#139873;--accent-dark:#0c7558;--accent-soft:#ddf5ed;--danger:#d85252;--danger-soft:#fde8e8;--shadow:0 16px 48px rgba(35,72,63,.09)}*{box-sizing:border-box}html{background:var(--bg)}body{margin:0;min-height:100vh;color:var(--ink);background:radial-gradient(circle at 100% 0,rgba(19,152,115,.08),transparent 28rem),var(--bg);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button{font:inherit}button:focus-visible{outline:3px solid rgba(19,152,115,.28);outline-offset:2px}.app-shell{width:min(100%,860px);min-height:100vh;margin:0 auto;padding:max(20px,env(safe-area-inset-top)) 18px max(28px,env(safe-area-inset-bottom))}.topbar{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:26px}.topbar h1{margin:4px 0 0;font-size:clamp(1.45rem,5vw,2.15rem);line-height:1.05;letter-spacing:-.04em}.eyebrow{color:var(--accent-dark);font-size:.76rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.language-row{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:6px;max-width:230px}.language-chip{min-width:42px;height:42px;padding:0 9px;border:1px solid var(--line);border-radius:12px;background:hsla(0,0%,100%,.88);color:var(--muted);font-weight:800;cursor:pointer}.language-chip.active{background:var(--ink);color:#fff;border-color:var(--ink)}.language-chip:disabled{opacity:.6;cursor:default}.hero-card{display:grid;grid-template-columns:auto 1fr;grid-gap:16px;gap:16px;position:relative;overflow:hidden;padding:22px;border:1px solid var(--line);border-radius:26px;background:var(--card);box-shadow:var(--shadow)}.hero-flag{width:62px;height:62px;display:grid;place-items:center;border-radius:19px;background:#eef3f2;font-size:2rem}.hero-copy{position:relative;z-index:2}.hero-copy h2{margin:5px 0 8px;font-size:clamp(1.45rem,6vw,2.2rem);line-height:1.05;letter-spacing:-.04em}.hero-copy p{margin:0;max-width:470px;color:var(--muted);line-height:1.5}.hero-map-wrap{grid-column:1/-1;padding:8px 8px 2px}.hero-map{display:block;width:100%;max-height:250px;object-fit:contain}.primary-button,.secondary-button{grid-column:1/-1;min-height:54px;border-radius:16px;border:0;padding:13px 20px;font-weight:800;cursor:pointer}.primary-button{background:var(--accent);color:#fff;box-shadow:0 9px 22px rgba(19,152,115,.2)}.primary-button:hover{background:var(--accent-dark)}.secondary-button{background:#edf2f0;color:var(--ink)}.primary-button.compact{min-height:48px;width:100%;margin-top:12px}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:10px;gap:10px;margin-top:14px}.stat-card{min-width:0;padding:15px 10px;text-align:center;border:1px solid var(--line);border-radius:18px;background:hsla(0,0%,100%,.78)}.stat-card strong{display:block;margin:4px 0 2px;font-size:1.1rem}.stat-card>span:last-child{color:var(--muted);font-size:.78rem}.stat-icon{color:var(--accent)}.round-count{text-align:center;color:var(--muted);font-size:.82rem}.quiz-shell{width:min(100%,760px)}.quiz-header{display:grid;grid-template-columns:44px 1fr auto;align-items:center;grid-gap:12px;gap:12px;margin-bottom:16px}.icon-button{width:44px;height:44px;border:1px solid var(--line);border-radius:13px;background:#fff;color:var(--ink);font-size:1.55rem;cursor:pointer}.progress-track{height:10px;border-radius:999px;background:#dfe7e4;overflow:hidden}.progress-fill{height:100%;border-radius:inherit;background:var(--accent);transition:width .25s ease}.question-counter{color:var(--muted);font-size:.82rem;font-weight:800}.quiz-card{padding:22px;border:1px solid var(--line);border-radius:26px;background:var(--card);box-shadow:var(--shadow)}.quiz-meta{display:flex;justify-content:space-between;gap:8px;color:var(--muted);font-size:.76rem;font-weight:800}.question-title{margin:24px auto 18px;max-width:650px;text-align:center;font-size:clamp(1.45rem,5vw,2.05rem);line-height:1.2;letter-spacing:-.035em}.question-image-wrap{display:grid;place-items:center;min-height:250px;margin:8px 0 18px;padding:14px;border-radius:20px;background:#f6f9f8;border:1px solid #e8efed}.question-image{display:block;width:100%;max-width:590px;max-height:330px;object-fit:contain}.text-clue{display:grid;place-items:center;height:120px;margin:8px 0 20px;border-radius:20px;background:var(--accent-soft);color:var(--accent-dark);font-weight:900;font-size:2rem;letter-spacing:.08em}.answer-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:10px;gap:10px}.answer-button{display:flex;align-items:center;gap:12px;min-height:64px;padding:11px 14px;text-align:left;border:1px solid var(--line);border-radius:16px;background:#fff;color:var(--ink);font-weight:750;cursor:pointer}.answer-button:hover:not(:disabled){border-color:#9acdbc;background:#f7fcfa;transform:translateY(-1px)}.answer-button:disabled{cursor:default}.answer-letter{flex:0 0 34px;width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:#edf2f0;color:var(--muted);font-size:.8rem}.answer-button.correct{border-color:#79c3a9;background:var(--accent-soft);color:#0b634b}.answer-button.correct .answer-letter{background:var(--accent);color:#fff}.answer-button.wrong{border-color:#edabab;background:var(--danger-soft);color:#9e3030}.answer-button.wrong .answer-letter{background:var(--danger);color:#fff}.feedback{margin-top:14px;padding:15px;border-radius:18px;display:flex;flex-direction:column}.feedback.success{background:var(--accent-soft);color:#0b634b}.feedback.error{background:var(--danger-soft);color:#8f3434}.feedback>span{margin-top:3px;font-size:.9rem}.result-shell{display:grid;place-items:center}.result-card{width:min(100%,520px);padding:34px 24px;text-align:center;border:1px solid var(--line);border-radius:28px;background:#fff;box-shadow:var(--shadow)}.result-card h1{margin:7px 0 12px;font-size:2rem;letter-spacing:-.04em}.result-medal{font-size:3rem;margin-bottom:12px}.result-score{font-size:4.2rem;line-height:1;font-weight:900;color:var(--accent-dark);letter-spacing:-.06em}.result-score span{color:#9aaba6;font-size:1.5rem}.result-rewards{display:flex;justify-content:center;gap:10px;margin:18px 0 22px}.result-rewards span{padding:8px 12px;border-radius:999px;background:#edf5f2;font-weight:800;font-size:.84rem}.result-card .secondary-button{width:100%;margin-top:10px}@media (max-width:640px){.app-shell{padding-left:12px;padding-right:12px}.topbar{display:block}.language-row{justify-content:flex-start;max-width:none;margin-top:14px}.hero-card,.quiz-card{border-radius:22px;padding:16px}.hero-flag{width:52px;height:52px;border-radius:16px;font-size:1.65rem}.stats-grid{gap:7px}.answer-grid{grid-template-columns:1fr}.question-image-wrap{min-height:210px;padding:8px}.quiz-meta{font-size:.7rem}.result-card{border-radius:22px}}