:root{font-family:Segoe UI,system-ui,sans-serif;color:#172833;background:#f5f7f9}*{box-sizing:border-box}body{margin:0}.brand{display:flex;align-items:center;gap:24px;padding:18px 28px;background:#fff;border-bottom:1px solid #dce3e8;min-height:74px}.brand-name{font-weight:800;letter-spacing:1.2px;color:#bd2026;text-decoration:none;font-size:21px}#app-name{font-weight:600;font-size:17px}#account{margin-left:auto;display:flex;align-items:center;gap:16px;font-size:14px}.logout{background:#fff;border:1px solid #ccd6dd;border-radius:6px;padding:8px 12px;font:inherit;cursor:pointer}main{padding:24px}.welcome{margin:12vh auto 0;max-width:560px;padding:38px;background:#fff;border:1px solid #dce3e8;border-radius:10px}.welcome h1{font-size:28px;line-height:1.2;margin-top:0}.welcome p{line-height:1.6;color:#536774}.sign-in{display:inline-block;color:white;text-decoration:none;background:#b51f25;border-radius:6px;padding:12px 20px;margin-top:16px;font-weight:600}.status-error{padding:24px;border-left:4px solid #bf252b;background:white;border-radius:5px;line-height:1.6}@media(max-width:700px){.brand{padding:16px;gap:12px;flex-wrap:wrap}#account{width:100%;margin-left:0;font-size:13px}#app-name{font-size:15px}main{padding:12px}.welcome{margin-top:6vh;padding:26px}.welcome h1{font-size:25px}}