:root{--ink:#192036;--muted:#747b8e;--line:#e3e6ee;--blue:#3157d5;--bg:#f2f4f9}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,"Malgun Gothic",sans-serif;color:var(--ink);background:radial-gradient(circle at 15% 15%,#e9efff 0,transparent 35%),radial-gradient(circle at 85% 85%,#e6f5ef 0,transparent 32%),var(--bg)}
.auth-page{min-height:100vh;display:grid;place-items:center;padding:24px}
.auth-card{width:min(440px,100%);padding:34px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 24px 70px rgba(25,32,54,.13)}
.auth-brand{display:flex;align-items:center;gap:12px;margin-bottom:30px}.auth-brand>span{display:grid;place-items:center;width:42px;height:42px;border-radius:11px;background:var(--ink);color:#fff;font-size:12px;font-weight:700}.auth-brand b,.auth-brand small{display:block}.auth-brand b{font-size:17px}.auth-brand small{margin-top:3px;color:var(--muted);font-size:11px}
.auth-heading p{margin:0 0 8px;color:var(--blue);font-size:10px;font-weight:700;letter-spacing:.14em}.auth-heading h1{margin:0 0 9px;font-size:30px}.auth-heading>span{display:block;color:var(--muted);font-size:13px;line-height:1.6}
.auth-error{margin:18px 0 0;padding:11px 12px;border:1px solid #efc5c1;border-radius:9px;background:#fff2f0;color:#a63e37;font-size:12px}
form{display:grid;gap:15px;margin-top:24px}label span{display:block;margin-bottom:7px;color:var(--muted);font-size:11px;font-weight:700}input{width:100%;height:48px;padding:0 13px;border:1px solid var(--line);border-radius:10px;background:#fafbfc;color:var(--ink);font:inherit}input:focus{outline:3px solid rgba(49,87,213,.13);border-color:var(--blue)}label small{display:block;margin-top:6px;color:var(--muted);font-size:10px}button{height:48px;border:0;border-radius:10px;background:var(--blue);color:#fff;font-weight:700;cursor:pointer}button:hover{background:#2648b8}
textarea{width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:10px;background:#fafbfc;color:var(--ink);font:inherit;resize:vertical}.auth-success{margin:20px 0;padding:13px;border-radius:9px;background:#eaf7f0;color:#18734b;font-size:12px}
.auth-security{margin:20px 0 0;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:10px;line-height:1.6}.auth-back{display:block;margin-top:16px;text-align:center;color:var(--blue);font-size:12px;text-decoration:none}