:root { font-family: "Microsoft YaHei", "Segoe UI", sans-serif; color: #1d2924; background: #f3f6f4; letter-spacing: 0; }
* { box-sizing: border-box; }
body { margin: 0; }
.login-shell { min-height: 100svh; display: grid; place-items: center; padding: 24px; }
.login-card { width: 100%; max-width: 380px; padding: 32px; border: 1px solid #d1dbd5; border-radius: 6px; background: #fff; }
.brand { font-size: 18px; font-weight: 700; color: #176c56; }
h2 { font-size: 22px; margin: 24px 0; }
.login-form { display: grid; gap: 10px; }
label { font-size: 14px; }
input { min-width: 0; width: 100%; height: 44px; border: 1px solid #bbc9c0; border-radius: 4px; padding: 10px 12px; font: inherit; margin-bottom: 10px; }
button { min-height: 44px; border: 0; border-radius: 4px; background: #176c56; color: white; font: inherit; cursor: pointer; margin-top: 8px; }
button:hover { background: #11523f; }
input:focus-visible, button:focus-visible { outline: 2px solid #267d64; outline-offset: 3px; }
.login-message { min-height: 20px; font-size: 13px; overflow-wrap: anywhere; margin-bottom: 0; }
.err { color: #a52f35; }
@media (max-width: 420px) { .login-shell { padding: 16px; } .login-card { padding: 24px; } }