:root{color-scheme:light;--ink:#1e293b;--muted:#64748b;--line:#e2e8f0;--accent:#0f766e;--soft:#f8fafc}*{box-sizing:border-box}body{margin:0;background:var(--soft);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Noto Sans",sans-serif;line-height:1.7}.site-header{display:flex;gap:24px;align-items:center;justify-content:space-between;max-width:960px;margin:0 auto;padding:24px 20px}.brand{color:var(--ink);font-weight:800;font-size:20px;text-decoration:none}.language-nav{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.lang-link{color:var(--muted);font-size:13px;text-decoration:none;padding:4px 8px;border-radius:999px}.lang-link.active,.lang-link:hover{background:#ccfbf1;color:#115e59}.page-shell{max-width:960px;margin:0 auto;padding:8px 20px 48px}.document{background:#fff;border:1px solid var(--line);border-radius:20px;padding:36px clamp(22px,5vw,64px);box-shadow:0 10px 30px #0f172a0a}.document h1{margin:0 0 12px;line-height:1.25;font-size:clamp(28px,4vw,42px)}.document h2{margin:32px 0 8px;line-height:1.35;font-size:22px}.document h3{margin:24px 0 6px}.document p{margin:12px 0}.document ul{padding-left:24px}.document li{margin:6px 0}.document code{background:#f1f5f9;padding:2px 5px;border-radius:5px}.lead{font-size:18px;color:var(--muted)}.support-card{background:#f0fdfa;border:1px solid #99f6e4;border-radius:16px;padding:20px;margin:24px 0}.email{font-size:18px;font-weight:700;color:var(--accent)}.button{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;border-radius:10px;padding:9px 15px;font-weight:700}.notice{color:var(--muted);font-size:13px;border-top:1px solid var(--line);padding-top:20px;margin-top:36px}.site-footer{display:flex;gap:16px;flex-wrap:wrap;max-width:960px;margin:0 auto;padding:0 20px 36px;color:var(--muted);font-size:13px}.site-footer a{color:var(--accent)}