:root{--sea-deep:#0b3d5c;--sea:#14608c;--sea-light:#2e8bc0;--foam:#eaf4f8;--sand:#f4ecd8;--ink:#10222e;--ok:#1d7a4f;--err:#b3362b}*{box-sizing:border-box}body{background:linear-gradient(180deg, var(--foam) 0%, var(--sand) 100%);color:var(--ink);min-height:100vh;margin:0;font-family:Segoe UI,Helvetica Neue,Arial,sans-serif}.app-header{background:var(--sea-deep);color:var(--foam);align-items:baseline;gap:1rem;padding:1rem 2rem;display:flex;box-shadow:0 2px 8px #0b3d5c66}.brand{letter-spacing:.04em;font-size:1.4rem;font-weight:700}.tagline{opacity:.8;font-size:.9rem}.app-main{max-width:960px;margin:2rem auto;padding:0 1.5rem}.card{background:#fff;border:1px solid #0b3d5c26;border-radius:10px;padding:1.5rem 2rem;box-shadow:0 4px 14px #0b3d5c14}.card h1{color:var(--sea-deep);margin-top:0}.status{border-radius:999px;padding:.35rem .9rem;font-size:.9rem;font-weight:600;display:inline-block}.status-ok{color:var(--ok);background:#1d7a4f1f}.status-error{color:var(--err);background:#b3362b1f}