:root{color-scheme:light;--brand:#164d41;--ink:#20252a;--muted:#626b73;--surface:#f5f6f8}*{box-sizing:border-box}body{margin:0;background:var(--surface);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}header{display:flex;justify-content:space-between;align-items:center;padding:24px 6vw;border-bottom:1px solid #dce2df;gap:24px}header img{display:block;max-width:40vw;height:auto}a{color:var(--brand);text-underline-offset:4px}main{max-width:1100px;margin:64px auto;padding:0 24px}h1{font-size:clamp(42px,7vw,80px);font-weight:600;line-height:1.08;letter-spacing:-.045em;margin:16px 0 28px}h2{font-size:26px;letter-spacing:-.025em;line-height:1.25}p{max-width:72ch}.lead{font-size:21px;color:var(--muted)}.eyebrow,.platform-label{font-size:12px;letter-spacing:.13em;font-weight:700;color:var(--brand)}.platforms,.steps{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:36px 0}article,.staff{padding:32px;background:white;border:1px solid #dce2df;border-radius:18px}.download,button,.secondary{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:14px 22px;border-radius:10px;font:inherit;font-weight:600;text-decoration:none}.download{background:var(--brand);color:white}.download:hover{background:#103c32}button:disabled{background:#e4e8e6;color:#414a46;border:1px solid #bdc6c1;cursor:not-allowed}.secondary{border:1px solid var(--brand);margin:8px 10px 8px 0}.hint{font-size:14px;color:var(--muted)}.notice{border-left:4px solid var(--brand);padding:18px 24px;background:#e7efeb;border-radius:0 12px 12px 0;margin:28px 0}.notice p{margin:8px 0 0}footer{padding:28px 6vw;color:var(--muted);border-top:1px solid #dce2df;font-size:14px}a:focus-visible,button:focus-visible{outline:3px solid #164d41;outline-offset:5px}@media(max-width:650px){main{margin:36px auto}.platforms,.steps{grid-template-columns:1fr}article,.staff{padding:24px}.download,button{width:100%}header{padding:18px 24px}}@media print{header,footer{padding:10px}main{margin:16px auto}h1{font-size:36px}.steps{gap:12px}article{padding:15px;break-inside:avoid}.notice{break-inside:avoid}.download,.secondary{display:none}}