:root{--ink:#17343f;--muted:#70848c;--teal:#168f83;--line:#e4eae7;--paper:#f6f7f3;--danger:#b64140;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink)}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;background:radial-gradient(circle at 15% 10%,#e8f2ec 0,transparent 46%),radial-gradient(circle at 88% 90%,#eef3ea 0,transparent 42%),var(--paper);font-size:14px;line-height:1.7;display:grid;place-items:center;padding:28px 18px}
.login-shell{width:100%;max-width:520px}
.login-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:38px 40px 30px;box-shadow:0 20px 60px #17343f12}
.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:28px}
.login-mark{width:42px;height:42px;border-radius:12px;background:#15333c;color:#c1ebd3;display:grid;place-items:center;font-size:17px;font-weight:650;letter-spacing:.5px}
.login-brand strong{display:block;font-size:17px;letter-spacing:3px;font-weight:650}
.login-brand small{display:block;font-size:10px;letter-spacing:1.4px;color:#90a49c;margin-top:1px}
.login-card h1{font-size:26px;line-height:1.5;letter-spacing:-.3px;font-weight:650;margin:0 0 12px}
.login-card p{margin:0}
#login-copy{font-size:12px;color:var(--muted);line-height:1.95}
.login-actions{display:flex;flex-direction:column;gap:10px;margin-top:26px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:1px solid transparent;border-radius:8px;padding:12px 18px;font-size:13px;font-weight:550;line-height:1.5;text-decoration:none;cursor:pointer;transition:background .15s,border-color .15s;font-family:inherit}
.button.primary{background:var(--teal);color:#fff;box-shadow:0 6px 16px #168f8322}
.button.primary:hover{background:#127b70}
.button.secondary{border-color:#cdddd7;background:#fff;color:#24564f}
.button.secondary:hover{background:#e9f5f0}
.button.subtle{border-color:#e2eae4;background:transparent;color:#6c7f83}
.button.subtle:hover{background:#f1f5f2}
.login-note{font-size:11px;color:#93a5a0;line-height:1.9;margin-top:22px!important;padding-top:18px;border-top:1px solid #eef2ee}
.login-feedback{font-size:12px;color:var(--danger);margin-top:12px!important;min-height:0}
[hidden]{display:none!important}
button:focus-visible,a:focus-visible{outline:3px solid #82c9b8;outline-offset:3px}
@media(max-width:520px){.login-card{padding:30px 23px 24px;border-radius:13px}.login-card h1{font-size:22px}}