* { box-sizing: border-box; }
body { margin: 0; background: #f3f5f8; color: #272d38; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; -webkit-font-smoothing: antialiased; }
.login-shell { width: min(420px, calc(100% - 32px)); margin: 0 auto; padding: min(14vh,120px) 0 40px; }
.login-brand { display: flex; justify-content: center; align-items: center; gap: 10px; margin-bottom: 24px; }
.login-mark { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 6px; background: #2563eb; }
.login-mark svg { width: 25px; height: 25px; fill: none; stroke: #fff; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.login-brand strong { display: block; font-size: 16px; font-weight: 650; }
.login-brand span:not(.login-mark) { display: block; margin-top: 3px; color: #697386; font-size: 11px; }
.login-card { border: 1px solid #cdd6e3; border-radius: 5px; background: #fff; }
.login-card > header { padding: 20px 24px 16px; border-bottom: 1px solid #d9e1ec; background: #f8fafd; }
h1 { margin: 0; font-size: 18px; font-weight: 600; }
.login-card header p { margin: 7px 0 0; color: #697386; font-size: 12px; line-height: 1.6; }
form { padding: 20px 24px; }
label { display: block; margin: 0 0 7px; color: #47566b; font-size: 13px; font-weight: 500; }
input { display: block; width: 100%; height: 38px; padding: 0 10px; border: 1px solid #c7d2e2; border-radius: 4px; background: #fff; color: #272d38; font: inherit; font-size: 14px; }
input::placeholder { color: #697386; }
#loginUsername { margin-bottom: 18px; }
input:focus { outline: 2px solid #b6cef4; outline-offset: 1px; border-color: #6c98df; }
.password-field { position: relative; }
.password-field input { padding-right: 58px; }
.password-field button { position: absolute; inset: 1px 1px 1px auto; width: 52px; border: 0; border-left: 1px solid #e0e5ed; border-radius: 0 3px 3px 0; background: #f8fafd; color: #586377; font-size: 12px; cursor: pointer; }
.login-submit { width: 100%; height: 38px; margin-top: 22px; border: 1px solid #2563eb; border-radius: 4px; background: #2563eb; color: #fff; font-size: 14px; font-weight: 500; cursor: pointer; }
.login-submit:hover { background: #1d4ed8; }
.login-submit:disabled { border-color: #91afe2; background: #91afe2; cursor: wait; }
.login-error { margin: 14px 0 -6px; padding: 8px 10px; border: 1px solid #efc7bf; border-radius: 3px; background: #fff5f2; color: #b42318; font-size: 12px; line-height: 1.6; }
.login-card > footer { padding: 12px 20px; border-top: 1px solid #e0e5ed; background: #fafbfc; color: #697386; font-size: 11px; text-align: center; }
.login-footer { margin: 18px 0 0; color: #697386; font-size: 11px; text-align: center; }
button:focus-visible { outline: 2px solid #2563eb; outline-offset: 3px; }
@media (max-width: 480px) { .login-shell { padding-top: 9vh; } form { padding: 20px; } input { height: 42px; font-size: 16px; } .login-submit { height: 42px; } }