:root{font-family:'DM Sans','Noto Sans JP',sans-serif;color:#1c2a3b;background:#f4f7fb;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(circle at 12% 8%,#e8f0ff 0,transparent 34%),#f4f7fb}.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(100%,420px);background:#fff;border:1px solid #e3e9f2;border-radius:16px;padding:34px;box-shadow:0 16px 50px #243c6014}.brand{display:flex;align-items:center;gap:10px;color:#1d2b3d;text-decoration:none;font-size:16px;font-weight:750;letter-spacing:.02em;margin-bottom:34px}.brand-mark{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,#4b8cff,#6b65ea);color:white;font-size:17px}.brand-muted{color:#8290a4;font-weight:500}.eyebrow{color:#5d82d5;font-size:10px;font-weight:700;letter-spacing:.18em;margin:0 0 8px}.login-card h1{font-size:25px;margin:0}.intro{color:#718096;font-size:13px;margin:9px 0 24px}.login-card label{display:block;font-size:12px;font-weight:650;margin:16px 0 7px}.login-card input{width:100%;height:44px;border:1px solid #d9e1ec;border-radius:8px;padding:0 12px;font:inherit;color:#1d2b3d;background:#fff}.login-card input:focus{outline:3px solid #4b8cff22;border-color:#6f97ec}.login-card button{width:100%;height:45px;border:0;border-radius:8px;margin-top:23px;color:#fff;background:#3d75dc;font:inherit;font-weight:700;cursor:pointer}.login-card button:hover{background:#2c63c4}.login-card button:disabled{background:#aab7ca;cursor:not-allowed}.notice{border:1px solid #f1caca;background:#fff4f3;color:#9c4038;padding:11px 12px;border-radius:8px;font-size:12px;line-height:1.6;margin-bottom:17px}.notice.setup{border-color:#f2dfb6;background:#fff9eb;color:#85631b}.footnote{color:#8793a4;font-size:10px;text-align:center;margin:20px 0 0}@media(max-width:480px){.login-shell{padding:16px}.login-card{padding:26px 22px}.brand{margin-bottom:28px}}