:root{--bg: #f6f7f5;--card: #ffffff;--ink: #14201d;--muted: #5f6b67;--line: #dfe5e2;--brand: #0f766e;--brand-ink: #ffffff;--radius: 14px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 var(--font);-webkit-font-smoothing:antialiased}.shell{min-height:100dvh;display:flex;flex-direction:column;max-width:640px;margin:0 auto;padding:0 16px env(safe-area-inset-bottom)}.top{display:flex;align-items:center;justify-content:space-between;padding:14px 0}.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.01em}.brand-mark{width:26px;height:26px;border-radius:8px;background:var(--brand);display:inline-block}.lang select{border:1px solid var(--line);background:var(--card);border-radius:10px;padding:8px 10px;font:inherit;color:var(--ink)}.main{flex:1;padding:8px 0 24px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}h1{font-size:22px;margin:0 0 8px}p{margin:0 0 10px}.muted{color:var(--muted);font-size:14px}.fallback{border-top:1px solid var(--line);padding:16px 0 20px;color:var(--muted);font-size:14px}.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:6px}.btn{display:inline-block;background:var(--brand);color:var(--brand-ink);border:1px solid var(--brand);border-radius:10px;padding:10px 14px;text-decoration:none;font-weight:600}.btn.ghost{background:transparent;color:var(--brand)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}