:root{--yb-bg:#fffaf0;--yb-surface:#fff;--yb-text:#0f172a;--yb-muted:#64748b;--yb-border:#e2e8f0;--yb-primary:#f28c28;--yb-primary-2:#e26f00;--yb-accent-soft:#f3f4f6;--yb-accent-focus:#f28c28;--yb-milk:#fffaf0;--yb-ok:#065f46;--yb-radius:14px}*{box-sizing:border-box}html,body{background:var(--yb-bg);color:var(--yb-text);margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}a{color:var(--yb-primary)}.yb-shell{max-width:1080px;margin:0 auto;padding:32px 16px 48px}.yb-card{background:var(--yb-surface);border:1px solid var(--yb-border);border-radius:var(--yb-radius);transition:transform .2s,box-shadow .2s;box-shadow:0 8px 24px #0f172a14}.yb-card:hover{transform:translateY(-2px);box-shadow:0 12px 26px #0f172a1f}.yb-card-pad{padding:16px}.yb-muted{color:var(--yb-muted)}.yb-badge{border:1px solid var(--yb-border);color:#334155;background:#fff;border-radius:999px;align-items:center;gap:6px;padding:4px 10px;font-size:12px;font-weight:600;display:inline-flex}.yb-btn{background:linear-gradient(135deg, var(--yb-primary), var(--yb-primary-2));color:var(--yb-milk);cursor:pointer;border:0;border-radius:10px;padding:10px 14px;font-weight:600;transition:transform .16s,box-shadow .16s;box-shadow:0 8px 16px #e26f003d}.yb-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 10px 20px #e26f004d}.yb-btn:disabled{opacity:.6;cursor:not-allowed}.yb-input,.yb-textarea{border:1px solid var(--yb-accent-soft);background:#fff;border-radius:10px;outline:none;width:100%;padding:10px 12px;transition:border-color .16s,box-shadow .16s}.yb-input:focus,.yb-textarea:focus{border-color:var(--yb-accent-focus);box-shadow:0 0 0 3px #f28c2824}.yb-input:required:invalid,.yb-textarea:required:invalid{border-color:var(--yb-accent-focus)}.yb-grid{gap:12px;display:grid}.yb-footer{max-width:1080px;color:var(--yb-muted);margin:0 auto;padding:20px 16px 36px}.yb-wave-wrap{width:100%;line-height:0;overflow:hidden}.yb-wave{width:100%;height:72px}.yb-wave path{animation:4s linear infinite ybWave}@keyframes ybWave{0%{transform:translate(0)}50%{transform:translate(-14px)}to{transform:translate(0)}}