.pair-intro{max-width:1040px}.content-page .pair-intro{margin-bottom:36px}.pair-intro h1{font-size:clamp(2.2rem,5vw,4.3rem);line-height:1.08;letter-spacing:-.035em;max-width:950px}.pair-panel{padding:clamp(22px,4vw,44px);border:1px solid var(--line-strong);border-radius:24px;background:var(--surface);max-width:1040px}.pair-panel h2{font-size:clamp(1.7rem,3vw,2.5rem)}.pair-panel h3{font-size:clamp(1.3rem,2.5vw,1.8rem);margin:18px 0}.pair-panel p{color:var(--muted);line-height:1.65;max-width:75ch}.pair-panel [hidden]{display:none!important}.pair-panel .button{margin:8px 8px 8px 0;white-space:normal;min-height:48px}.pair-panel .button:disabled{opacity:.65;cursor:default}.pair-panel .button[data-result=correct]{outline:3px solid var(--accent);opacity:1}.pair-panel .button[data-result=incorrect]{outline:3px solid #ce815e;opacity:1}.pair-panel :focus-visible{outline:3px solid var(--accent);outline-offset:5px}.pair-panel h3:focus{outline:none}.pair-panel #pair-stage>a{display:block;margin-top:20px;text-decoration:underline}.pair-options{display:flex;flex-wrap:wrap;gap:8px}.pair-flag{display:block;width:160px;height:120px;object-fit:contain;margin:20px 0;border:1px solid var(--line-strong);border-radius:4px}.pair-map{display:block;width:100%;max-width:720px;height:auto;margin:20px 0;border-radius:12px}.pair-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}.pair-grid article{padding:24px;background:var(--surface-soft);border:1px solid var(--line);border-radius:16px}.pair-definitions dt{font-weight:700;color:var(--text-strong);margin-top:24px}.pair-definitions dd{margin:10px 0 0;line-height:1.7;color:var(--muted)}.content-page details{padding:16px 0}.content-page summary{cursor:pointer;font-weight:600}@media(max-width:600px){.pair-grid{grid-template-columns:1fr}.pair-panel .pair-options .button{flex:1;min-width:115px}.pair-panel{border-radius:16px}.pair-intro h1{overflow-wrap:break-word}}@media print{#pair-practice{display:none}.pair-grid{grid-template-columns:1fr 1fr}}