:root{--jade:#123f34;--gold:#c7a568;--ink:#25302a;--muted:#78827b;--line:#dde5df}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink)}
body{min-height:100vh;min-height:100dvh;background:radial-gradient(circle at 15% 5%,#f7f0dd 0,transparent 34%),radial-gradient(circle at 90% 95%,#cfe0d7 0,transparent 38%),#e9eee9}
.login-shell{min-height:100vh;min-height:100dvh;display:grid;place-items:center;padding:24px}
.login-card{width:min(440px,100%);padding:38px;border:1px solid rgba(18,63,52,.12);border-radius:18px;background:rgba(255,255,252,.94);box-shadow:0 28px 80px rgba(18,63,52,.15);backdrop-filter:blur(18px)}
.login-brand{display:flex;align-items:center;gap:12px}.login-brand>span{width:44px;height:44px;display:grid;place-items:center;border-radius:8px;background:var(--jade);color:#f8e8c2;font:700 24px "KaiTi",serif;box-shadow:0 8px 20px rgba(18,63,52,.2)}
.login-brand b,.login-brand small{display:block}.login-brand b{font:700 19px "STSong","SimSun",serif;letter-spacing:.08em}.login-brand small{margin-top:4px;color:#9b8051;font-size:10px;letter-spacing:.12em}
.login-copy{margin:38px 0 28px}.login-copy p{margin:0;color:var(--gold);font:700 10px Georgia,serif;letter-spacing:.25em}.login-copy h1{margin:9px 0 9px;font:700 30px/1.25 "STSong","SimSun",serif}.login-copy span{display:block;color:var(--muted);font-size:13px;line-height:1.75}
form label{display:block;margin-bottom:17px}form label>span{display:block;margin-bottom:8px;color:#566159;font-size:12px;font-weight:800}form input{width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:9px;background:#fff;font-size:16px;outline:0}form input:focus{border-color:#719487;box-shadow:0 0 0 4px rgba(18,63,52,.08)}
form button{width:100%;min-height:50px;display:flex;align-items:center;justify-content:space-between;margin-top:5px;padding:0 17px;border:0;border-radius:9px;background:linear-gradient(135deg,#143f35,#1d5b49);color:#fff;font-weight:800;box-shadow:0 10px 24px rgba(18,63,52,.2);cursor:pointer}form button:disabled{opacity:.6}
#loginError{min-height:20px;margin:11px 2px 0;color:#a13f36;font-size:12px;line-height:1.6}.login-card footer{margin-top:22px;padding-top:18px;border-top:1px solid #e7ebe7;color:#9ba19c;text-align:center;font-size:10px}
@media(max-width:540px){.login-shell{align-items:stretch;padding:0}.login-card{width:100%;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;padding:28px 20px;border:0;border-radius:0;box-shadow:none}.login-copy{margin:46px 0 30px}.login-copy h1{font-size:27px}.login-card footer{margin-top:auto}}