/* ===== 管理后台 ===== */
.login-screen { min-height: 100vh; display: grid; place-items: center; padding: 20px; background: radial-gradient(circle at 15% 10%, var(--brand-soft), transparent 42%), var(--bg); }
.login-card { width: min(410px,100%); background: var(--surface); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow); padding: 30px; }
.login-card .lg { width: 46px; height: 46px; border-radius: 13px; background: linear-gradient(145deg,var(--brand),#0b5f6a); color: #fff; display: grid; place-items: center; font-size: 24px; margin-bottom: 16px; }
.login-card h1 { font-size: 20px; margin: 0 0 6px; }
.login-card p { color: var(--text-2); font-size: 12.8px; line-height: 1.7; margin: 0 0 20px; }
.login-card .btn { width: 100%; height: 38px; margin-top: 4px; }

.admin-layout { display: grid; grid-template-columns: 218px minmax(0,1fr); min-height: 100vh; }
.admin-side { background: var(--surface); border-right: 1px solid var(--border); display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh; z-index: 30; }
.admin-side .as-brand { padding: 16px 16px 14px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; }
.admin-side .as-brand .mark { width: 30px; height: 30px; border-radius: 8px; background: var(--brand); color: #fff; display: grid; place-items: center; font-size: 15px; }
.admin-side .as-brand b { font-size: 14px; }
.admin-side .as-brand small { display: block; font-size: 10px; color: var(--text-3); margin-top: 2px; }
.admin-nav { padding: 10px 9px; flex: 1; overflow: auto; }
.admin-nav .nav-label { font-size: 10px; letter-spacing: .1em; color: var(--text-3); font-weight: 700; padding: 10px 9px 6px; }
.admin-nav a { display: flex; align-items: center; gap: 10px; padding: 9px 11px; border-radius: 8px; color: var(--text-2); text-decoration: none; font-size: 13px; margin-bottom: 2px; }
.admin-nav a:hover { background: var(--surface-3); color: var(--text); }
.admin-nav a.on { background: var(--brand-soft); color: var(--brand-strong); font-weight: 600; }
.admin-nav a .ni { width: 18px; text-align: center; font-size: 14px; }
.admin-side .as-foot { border-top: 1px solid var(--border); padding: 12px; font-size: 11.5px; color: var(--text-3); }
.admin-side .as-foot b { color: var(--text-2); }
.admin-side .as-foot .btn { width: 100%; margin-top: 9px; }

.admin-main { min-width: 0; }
.admin-top { height: 58px; background: var(--surface); border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 12px; padding: 0 clamp(14px,2.4vw,28px); position: sticky; top: 0; z-index: 25; }
.admin-top h2 { font-size: 16px; margin: 0; }
.admin-top .right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.admin-body { padding: clamp(16px,2.4vw,28px); max-width: 1400px; }
.page-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin-bottom: 16px; }
.page-head h3 { margin: 0 0 5px; font-size: 18px; }
.page-head p { margin: 0; color: var(--text-2); font-size: 12.8px; line-height: 1.7; }
.toolbar { display: flex; gap: 9px; align-items: center; flex-wrap: wrap; margin-bottom: 13px; }
.toolbar input[type=search] { max-width: 260px; }
.toolbar select { width: auto; min-width: 150px; }
.toolbar .spacer { flex: 1; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(150px,1fr)); gap: 12px; margin-bottom: 18px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: 11px; padding: 15px 16px; }
.stat .s-label { font-size: 11.5px; color: var(--text-3); }
.stat .s-value { font-size: 25px; font-weight: 700; margin-top: 5px; font-variant-numeric: tabular-nums; }
.stat .s-sub { font-size: 11px; color: var(--text-3); margin-top: 3px; }
.two-col { display: grid; grid-template-columns: 1.25fr 1fr; gap: 16px; }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.panel h4 { margin: 0 0 12px; font-size: 14px; }
.mini-list { font-size: 12.3px; }
.mini-list .row { display: flex; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--border); line-height: 1.5; }
.mini-list .row:last-child { border-bottom: 0; }
.mini-list .row .t { color: var(--text-3); white-space: nowrap; font-variant-numeric: tabular-nums; }
.mini-list .row .c { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.quick-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(160px,1fr)); gap: 10px; }
.quick-grid button { border: 1px solid var(--border); background: var(--surface-2); border-radius: 10px; padding: 14px; text-align: left; color: var(--text); }
.quick-grid button:hover { border-color: var(--brand); background: var(--brand-soft); }
.quick-grid b { display: block; font-size: 13px; margin-bottom: 4px; }
.quick-grid span { font-size: 11.5px; color: var(--text-2); line-height: 1.6; }

.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.settings-grid .full { grid-column: 1/-1; }
.set-section { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 18px; margin-bottom: 16px; }
.set-section h4 { margin: 0 0 4px; font-size: 14px; }
.set-section > p { margin: 0 0 15px; font-size: 12px; color: var(--text-3); line-height: 1.7; }
.set-foot { display: flex; gap: 9px; align-items: center; margin-top: 8px; flex-wrap: wrap; }
.editor-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.editor-wrap textarea { min-height: 420px; font-family: var(--mono); font-size: 12.5px; }
.editor-preview { border: 1px solid var(--border); border-radius: 8px; padding: 14px; overflow: auto; max-height: 480px; font-size: 13px; line-height: 1.8; }
.editor-preview img { max-width: 100%; }
.editor-preview table { border-collapse: collapse; }
.editor-preview th, .editor-preview td { border: 1px solid var(--border); padding: 5px 9px; }
.editor-preview pre { background: var(--code-bg); padding: 10px; border-radius: 6px; overflow: auto; }
.thumb { width: 42px; height: 34px; object-fit: cover; border-radius: 5px; border: 1px solid var(--border); }
.empty-row { text-align: center; padding: 36px; color: var(--text-3); font-size: 13px; }
@media (max-width: 900px) {
  .admin-layout { grid-template-columns: 1fr; }
  .admin-side { position: fixed; left: 0; top: 0; width: 230px; transform: translateX(-102%); transition: .2s; box-shadow: var(--shadow-lg); }
  .admin-side.open { transform: none; }
  .two-col, .settings-grid, .editor-wrap { grid-template-columns: 1fr; }
  .admin-body { padding: 14px; }
}