:root{color-scheme:light;font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.5;color:#0f172a;background-color:#f8fafc}*{box-sizing:border-box}body{margin:0;padding:0}main{max-width:720px;margin:0 auto;padding:2.5rem 1.5rem 4rem}h1,h2,p{margin:0 0 1rem}a{color:inherit;text-decoration:none}.card{border:1px solid #e2e8f0;border-radius:16px;padding:1.5rem;background:#fff;box-shadow:0 8px 16px rgba(15,23,42,.05)}.button-row{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1.5rem}.button{display:inline-flex;align-items:center;justify-content:center;padding:.6rem 1.25rem;border-radius:999px;border:1px solid #cbd5f5;background:#fff;color:#1e293b;font-weight:600;cursor:pointer}.button.primary{background:#1d4ed8;color:#fff;border-color:#1d4ed8}.placeholder{display:flex;align-items:center;justify-content:center;border:1px dashed #94a3b8;border-radius:12px;height:180px;margin-bottom:1rem;color:#64748b;background:#f1f5f9}