:root{font-family:system-ui,-apple-system,"Yu Gothic",Meiryo,sans-serif;color:#242325;background:#f2efec;--accent:#704333}*{box-sizing:border-box}body{margin:0}.auth-shell{min-height:100dvh;display:grid;place-items:center;padding:24px}.auth-card{width:min(100%,420px);background:#fff;border:1px solid #e9e1db;border-radius:22px;padding:30px;box-shadow:0 16px 45px #3b271d12}.auth-brand{font-size:21px;font-weight:850;margin-bottom:32px}.auth-brand span{font-size:15px;font-weight:700}.auth-card h1{font-size:27px;margin:0 0 24px}.auth-card form{display:grid;gap:18px}.auth-card label{display:grid;gap:7px;font-size:13px;font-weight:750}.auth-card input{width:100%;height:48px;border:1px solid #ded5cf;border-radius:12px;padding:0 14px;font:inherit;font-size:16px}.auth-card input:focus{outline:3px solid #a77d6f33;border-color:#8b5f50}.auth-primary{display:block;width:100%;border:0;border-radius:13px;background:var(--accent);color:#fff;padding:14px;font:inherit;font-weight:800;text-align:center;text-decoration:none;cursor:pointer}.auth-link{display:block;margin-top:20px;color:#704333;text-align:center;font-weight:700;font-size:14px}.auth-error,.auth-success,.auth-help{font-size:14px;line-height:1.6;margin:0 0 20px}.auth-error{color:#9a3028}.auth-success{color:#356544}.auth-help{color:#746b67}.auth-button-link{margin-top:20px}@media(max-width:480px){.auth-card{padding:24px 20px;border-radius:18px}}