/* 固定外观：内部浅色；登录区独立使用深色。不读取旧主题偏好。 */
:root {
  color-scheme: light;
  --primary: #14648f; --primary-d: #0b4d75; --primary-l: #eaf2f6;
  --bg: #f3f5f5; --card: #fff; --border: #dce4e7; --border-2: #edf1f2;
  --text: #20323e; --text-2: #405663; --text-3: #536774;
  --nav: #fafcfb; --nav-2: #edf3f5; --nav-text: #526977; --nav-text-a: #fff;
  --radius: 12px;
  --green: #087849; --teal: #08776f; --red: #b83131;
}
.sidebar { background: var(--nav); border-right: 1px solid var(--border); }
.brand { padding: 24px 14px 22px; border-bottom-color: var(--border); }
.brand .brand-logo, .login-brand img { background: transparent; border-radius: 0; padding: 0; filter: none; }
.brand small { color: var(--text-2); }
.menu-item { border-radius: 8px; margin: 3px 12px; }
.menu-item:hover { color: var(--primary); }
.menu-item.active { background: var(--primary-l); color: var(--primary); box-shadow: inset 3px 0 #c69a42; }
.menu-group { color: var(--text-3); font-size: 11.5px; letter-spacing: 1px; }
.card, .stat, .task-card, .inv-card { box-shadow: 0 2px 8px #13232e04; }
.topbar { background: var(--card); box-shadow: none; }
.tbl th { background: #f0f4f5; color: #354c5a; font-size: 12.5px; font-weight: 600; }
.tbl td { padding-top: 13px; padding-bottom: 13px; }
.btn-primary, .seg button.on { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-d); border-color: var(--primary-d); }
.input::placeholder { color: var(--text-3); opacity: 1; }
.topbar .crumb, .page-head .desc, .stat .ft, .row .meta, .tbl .sub,
.work-meta, .work-ft, .award-ft, .desc-grid .it .k { font-size: 12.5px; }
.brand small { font-size: 11.5px; }
.badge { font-weight: 500; }
/* 管理视角标签原来白字叠浅色渐变，与当前浅色侧栏对比不足。 */
#menu > [style*="background:linear-gradient"] { color: #34475c !important; }
#content [style*="color:#9ca3af"] { color: var(--text-3) !important; }

/* 平滑过渡的深色背景，避免背景画面与表单形成生硬分割。 */
#login {
  color-scheme: dark;
  --text: #f4f7fa; --text-2: #d0dce5; --text-3: #bbccd9;
  --border: #354958; --red: #ffb0aa; --red-bg: #44292f;
  isolation: isolate; overflow-x: hidden; overflow-y: auto;
  background: #101e2a url('../assets/login-bg-v2.jpg') center / cover no-repeat;
  grid-template-columns: minmax(0, 1fr) 400px;
  padding: 48px 12vw 48px 8vw; gap: 8vw;
}
#login::before {
  background: linear-gradient(90deg, #091d3030 0%, #0e20354d 40%, #101e2ae8 66%, #101e2a 100%);
  inset: 0; width: auto;
}
#login::after { display: none; }
#login .login-intro {
  color: #f3f6f8; max-width: 450px; margin-left: 0; margin-bottom: 5vh; padding-right: 16px;
  text-shadow: 0 2px 8px #03111ee0;
}
#login .login-intro h1 { font-size: clamp(32px, 3.3vw, 49px); line-height: 1.3; font-weight: 600; letter-spacing: 1px; }
#login .login-intro p { color: #e0e8ef; font-size: 14px; line-height: 1.9; }
#login .login-eyebrow { color: #e3bc75; font-weight: 500; letter-spacing: 3px; }
#login .login-tags span { color: #d4e0e9; font-size: 11px; background: transparent; border: 0; border-radius: 0; padding: 0 12px 0 0; backdrop-filter: none; }
#login .login-card {
  width: 400px; max-width: 100%; min-width: 0;
  background: #203340; border: 1px solid #486071;
  border-radius: 16px; box-shadow: 0 20px 60px #03111e33;
  padding: 32px; backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
#login .login-card::before, #login .login-card-cap { display: none; }
#login .login-brand { margin-bottom: 28px; }
#login .login-brand img {
  width: 174px;
  filter: drop-shadow(0 0 1px #d7e9f3) drop-shadow(0 0 9px #b6d6e329);
}
#login .login-brand p { margin-top: 8px; font-size: 12px; color: var(--text-2); }
#login .login-welcome { margin-bottom: 24px; }
#login .login-welcome h2 { font-size: 23px; font-weight: 600; color: var(--text); }
#login .login-card label { color: var(--text-2); font-size: 13px; font-weight: 500; }
#login .login-welcome p { color: var(--text-2); font-size: 13px; }
#login .login-card .input {
  background: #152735; border: 1px solid #405664; color: var(--text);
  border-radius: 8px; height: 46px;
}
#login .login-card .input:focus { border-color: #72a8c5; box-shadow: 0 0 0 3px #72a8c51a; }
#login .login-card .btn {
  background: #196d98; box-shadow: none; border-radius: 8px; height: 46px; color: #fff; letter-spacing: 2px;
}
#login .login-card .btn:hover { background: #207fae; transform: none; }
#login .login-card .tip { border-color: #405461; color: var(--text-3); font-size: 12px; line-height: 1.9; }
@media (min-width: 861px) and (max-width: 1100px) {
  #login { grid-template-columns: minmax(0, 1fr) 360px; padding: 32px 7vw 32px 5vw; gap: 5vw; }
  #login .login-card { width: 360px; padding: 28px; }
}
@media (max-width: 860px) {
  #login { padding: 24px 18px; align-items: safe center; }
  #login::before { background: #101e2acd; }
  #login .login-card { width: 100%; max-width: 400px; padding: 28px 24px; }
}
@media (max-width: 640px) {
  #login .login-brand img { width: 158px; }
  #login .login-brand { margin-bottom: 22px; }
}
@media (max-height: 740px) {
  #login { align-items: start; padding-top: 20px; padding-bottom: 20px; }
}