:root{--red:#e30613;--black:#080b0f;--panel:#11161d;--line:#2a3038;--white:#f7f7f5;--muted:#aeb5bf}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 80% 10%,#350007 0,transparent 32%),var(--black);color:var(--white);font:16px/1.5 Arial,sans-serif;min-height:100vh}.shell{width:min(760px,calc(100% - 32px));margin:50px auto}.brand{text-align:center;margin-bottom:24px}.brand img{width:min(390px,85%);max-height:150px;object-fit:contain}.card{background:rgba(17,22,29,.96);border:1px solid var(--red);padding:30px;box-shadow:0 20px 60px #0008}.card h1{font-size:32px;margin:10px 0}.card h2{margin:28px 0 10px;font-size:19px;border-bottom:1px solid var(--line);padding-bottom:8px}.status{display:inline-block;background:var(--red);padding:6px 10px;font-weight:800;font-size:12px;letter-spacing:.08em}.status.ok{background:#087d45}.status.bad{background:#9c1a1a}.muted{color:var(--muted);font-size:14px}.checks{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:22px 0;padding:16px;background:#090c10}.pass{color:#26d980}.fail{color:#ff3341}.errors{background:#3c0c11;border:1px solid #9c1a1a;padding:10px 15px}.errors p{margin:4px 0}form{display:grid;gap:12px}label{display:grid;gap:6px;font-size:13px;font-weight:700;color:#d9dde2}input{width:100%;padding:12px;background:#080b0f;border:1px solid #3b424c;color:#fff;border-radius:3px;font-size:16px}input:focus{outline:2px solid var(--red);border-color:transparent}button,.button{display:inline-block;border:0;background:var(--red);color:#fff;padding:14px 18px;text-decoration:none;font-weight:900;letter-spacing:.04em;cursor:pointer;margin-top:10px;text-align:center}li{margin:7px 0}@media(max-width:560px){.shell{margin:24px auto}.card{padding:20px}.card h1{font-size:26px}.checks{grid-template-columns:1fr}}