/* ============ 全局 ============ */
:root {
  --bg: #0f172a;
  --bg-soft: #1e293b;
  --panel: #ffffff;
  --panel-soft: #f8fafc;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-2: #475569;
  --text-3: #94a3b8;
  --brand: #6366f1;
  --brand-2: #8b5cf6;
  --success: #10b981;
  --warn: #f59e0b;
  --danger: #ef4444;
  --pink: #ec4899;
  --shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 8px 32px rgba(15, 23, 42, 0.12);
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(180deg, #f5f7fb 0%, #eef2ff 100%);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============ 顶部导航 ============ */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 32px;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  color: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,.2);
}
.topbar .brand {
  font-weight: 700; font-size: 17px;
  display: flex; align-items: center; gap: 10px;
}
.topbar .brand .logo {
  width: 28px; height: 28px; border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-size: 15px;
}
.topbar .brand .brand-name {
  font-size: 17px; font-weight: 700;
  color: #fff; letter-spacing: 0.5px;
}
.topbar .brand .brand-en {
  font-size: 12px; font-weight: 500;
  color: #94a3b8; letter-spacing: 1.2px;
  padding-left: 8px; margin-left: 2px;
  border-left: 1px solid rgba(255,255,255,0.15);
  text-transform: uppercase;
}
.topbar nav { display: flex; gap: 4px; }
.topbar nav a {
  color: #cbd5e1; padding: 8px 16px; border-radius: 8px;
  font-size: 14px; text-decoration: none;
  transition: all 0.2s;
}
.topbar nav a:hover { color: #fff; background: rgba(255,255,255,.06); }
.topbar nav a.active {
  color: #fff; background: rgba(99, 102, 241, 0.2);
}

.container { max-width: 1360px; margin: 32px auto 60px; padding: 0 24px; }

/* ============ 页头 ============ */
.page-header {
  display: flex; justify-content: space-between; align-items: flex-end;
  margin-bottom: 24px; gap: 20px; flex-wrap: wrap;
}
.page-header h1 {
  margin: 0; font-size: 28px; font-weight: 700;
  background: linear-gradient(135deg, var(--brand), var(--pink));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-header .subtitle {
  color: var(--text-2); font-size: 14px; margin-top: 6px;
}

/* ============ 过滤条 ============ */
.filter-bar {
  background: var(--panel); padding: 14px 20px; border-radius: 14px;
  box-shadow: var(--shadow);
  display: flex; gap: 14px; align-items: center; flex-wrap: wrap;
  margin-bottom: 24px; border: 1px solid var(--border);
}
.filter-bar label {
  font-size: 13px; color: var(--text-2); font-weight: 500;
  display: flex; align-items: center; gap: 6px;
}
.filter-bar select {
  padding: 7px 12px; border: 1px solid var(--border);
  border-radius: 8px; background: #fff; font-size: 13px;
  color: var(--text); cursor: pointer;
  transition: border 0.2s;
}
.filter-bar select:focus { outline: none; border-color: var(--brand); }
.filter-bar button {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff; border: none; padding: 8px 20px;
  border-radius: 8px; cursor: pointer; font-size: 13px;
  font-weight: 500; transition: opacity 0.2s;
}
.filter-bar button:hover { opacity: 0.9; }

/* 「只看带商品」复选框 */
.filter-bar .checkbox-label {
  gap: 6px; padding: 6px 12px;
  border: 1px dashed var(--border); border-radius: 8px;
  cursor: pointer; user-select: none;
  transition: background 0.15s, border-color 0.15s;
}
.filter-bar .checkbox-label:hover { border-color: var(--brand); background: #f8faff; }
.filter-bar .checkbox-label input { margin: 0; cursor: pointer; accent-color: var(--brand); }
.filter-bar .checkbox-label input:checked ~ span { color: var(--brand); font-weight: 600; }

/* ============ 榜单里的商品角标 & chips ============ */
.product-badge {
  display: inline-flex; align-items: center; gap: 3px;
  margin-left: 8px; padding: 2px 8px;
  font-size: 11px; font-weight: 600;
  color: #b45309; background: #fef3c7;
  border: 1px solid #fde68a; border-radius: 10px;
  vertical-align: middle;
  cursor: help;
}
.product-tags {
  margin-top: 6px;
  display: flex; flex-wrap: wrap; gap: 4px;
}
.product-tags .pt {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px; line-height: 1.5;
  border-radius: 10px;
  border: 1px solid transparent;
}
.product-tags .pt-brand {
  color: #b45309; background: #fef3c7; border-color: #fde68a;
}
.product-tags .pt-cat {
  color: #1e40af; background: #dbeafe; border-color: #bfdbfe;
}
.product-tags .pt-ch {
  color: #065f46; background: #d1fae5; border-color: #a7f3d0;
}

/* ============ KPI 卡片 ============ */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px; margin-bottom: 24px;
}
.kpi-card {
  background: var(--panel); padding: 22px;
  border-radius: 16px; border: 1px solid var(--border);
  box-shadow: var(--shadow); position: relative; overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}
.kpi-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.kpi-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: var(--brand);
}
.kpi-card.k-like::before { background: var(--pink); }
.kpi-card.k-comment::before { background: var(--warn); }
.kpi-card.k-share::before { background: var(--success); }
.kpi-card.k-avg::before { background: var(--brand-2); }
.kpi-card.k-er::before { background: var(--danger); }
.kpi-card .label {
  color: var(--text-2); font-size: 13px; margin-bottom: 8px;
  display: flex; align-items: center; gap: 6px;
}
.kpi-card .value {
  font-size: 28px; font-weight: 700; color: var(--text);
  line-height: 1.2;
}
.kpi-card .unit {
  font-size: 14px; color: var(--text-3); margin-left: 4px; font-weight: normal;
}
.kpi-card .sub {
  color: var(--text-3); font-size: 12px; margin-top: 6px;
}

/* ============ 面板 ============ */
.panel {
  background: var(--panel); border-radius: 16px; padding: 22px;
  border: 1px solid var(--border); box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px;
}
.panel-title {
  font-size: 15px; font-weight: 600; color: var(--text);
  display: flex; align-items: center; gap: 8px;
}
.panel-title .icon {
  width: 24px; height: 24px; border-radius: 6px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff; display: inline-flex; align-items: center; justify-content: center;
  font-size: 14px;
}
.panel-title .badge {
  font-weight: normal; font-size: 12px; color: var(--text-3);
  background: var(--panel-soft); padding: 2px 8px; border-radius: 10px;
}
.panel-hint {
  color: var(--text-3); font-size: 12px;
  padding: 10px 12px; background: #f8fafc; border-radius: 8px;
  margin-bottom: 14px; line-height: 1.6; border-left: 3px solid var(--brand);
}

.two-col {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }

/* ============ 榜单表格 ============ */
.rank-table {
  width: 100%; border-collapse: collapse; background: var(--panel);
  border-radius: 14px; overflow: hidden;
  box-shadow: var(--shadow); border: 1px solid var(--border);
}
.rank-table th, .rank-table td {
  padding: 14px 16px; text-align: left; font-size: 13px;
  border-bottom: 1px solid #f1f5f9; vertical-align: top;
}
.rank-table th {
  background: #f8fafc; color: var(--text-2); font-weight: 600;
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em;
}
.rank-table tr:last-child td { border-bottom: none; }
.rank-table tr:hover td { background: #fafbff; }

.rank { font-weight: 700; color: var(--text-3); width: 56px; font-size: 15px; }
.rank-1 { color: #ef4444; }
.rank-2 { color: #f59e0b; }
.rank-3 { color: #eab308; }

.tag {
  display: inline-block; padding: 3px 10px; border-radius: 4px;
  font-size: 11px; color: #fff; background: #64748b;
  font-weight: 500;
}
.tag-xhs { background: #ff2442; }
.tag-dy { background: #111; }
.tag-ks { background: #ff6600; }
.tag-bili { background: #fb7299; }
.tag-wechat { background: #07c160; }

.title .ttl {
  font-weight: 600; margin-bottom: 5px;
  color: var(--text); line-height: 1.4;
}
.title .ttl a { color: var(--text); }
.title .ttl a:hover { color: var(--brand); text-decoration: none; }
.title .desc {
  color: var(--text-3); font-size: 12px; line-height: 1.5;
  max-width: 460px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.hot { color: #dc2626; font-weight: 700; }

.action-btn {
  display: inline-block; padding: 5px 12px; border-radius: 6px;
  background: var(--panel-soft); color: var(--text-2);
  font-size: 12px; border: 1px solid var(--border);
  text-decoration: none; transition: all 0.15s;
}
.action-btn:hover {
  background: var(--brand); color: #fff; text-decoration: none;
  border-color: var(--brand);
}
.action-btn.primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff; border-color: transparent;
}
.action-btn.primary:hover { opacity: 0.92; }

/* 手机端才显示的、放在标题下面的操作按钮组（桌面端隐藏，操作列已有） */
.mobile-actions { display: none; }

/* ============ 图表容器 ============ */
.chart-box {
  position: relative; height: 260px;
}
.chart-box.tall { height: 320px; }

/* ============ 标题公式卡片 ============ */
.formula-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 14px;
}
.formula-card {
  background: linear-gradient(135deg, #fff, #f8fafc);
  border-radius: 12px; padding: 18px;
  border: 1px solid var(--border);
  transition: all 0.2s;
}
.formula-card:hover {
  border-color: var(--brand);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.12);
}
.formula-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px;
}
.formula-name {
  font-weight: 700; font-size: 15px;
  color: var(--brand);
}
.formula-ratio {
  font-size: 20px; font-weight: 700; color: var(--text);
}
.formula-ratio .pct { font-size: 12px; color: var(--text-3); }
.formula-desc {
  color: var(--text-2); font-size: 12px; line-height: 1.6;
  margin-bottom: 10px;
}
.formula-progress {
  height: 4px; background: #e2e8f0; border-radius: 2px; overflow: hidden;
  margin: 10px 0;
}
.formula-progress .bar {
  height: 100%; background: linear-gradient(90deg, var(--brand), var(--pink));
  border-radius: 2px;
}
.formula-examples {
  font-size: 12px; color: var(--text-3); line-height: 1.7;
}
.formula-examples .ex {
  display: block; padding: 4px 10px; background: #f1f5f9;
  border-radius: 6px; margin-top: 4px; color: var(--text-2);
}

/* ============ 词云 / 标签云 ============ */
.tag-cloud {
  display: flex; flex-wrap: wrap; gap: 8px; padding: 10px 0;
}
.tag-cloud .word {
  padding: 6px 12px; background: linear-gradient(135deg, #eef2ff, #f5f3ff);
  color: var(--brand); border-radius: 20px;
  font-weight: 500; border: 1px solid #e0e7ff;
  transition: all 0.2s; cursor: default;
}
.tag-cloud .word:hover {
  background: var(--brand); color: #fff;
  transform: translateY(-1px);
}
.tag-cloud .hashtag {
  background: linear-gradient(135deg, #fff1f2, #ffe4e6);
  color: var(--pink); border-color: #fecdd3;
}
.tag-cloud .hashtag:hover { background: var(--pink); color: #fff; }
.tag-cloud .word .cnt {
  font-size: 11px; margin-left: 4px; opacity: 0.7;
}

/* ============ 视频详情页 ============ */
.video-hero {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px; align-items: flex-start;
  background: var(--panel); padding: 28px;
  border-radius: 16px; border: 1px solid var(--border);
  box-shadow: var(--shadow); margin-bottom: 20px;
}
@media (max-width: 800px) { .video-hero { grid-template-columns: 1fr; } }

.video-hero .cover {
  width: 100%; aspect-ratio: 3/4;
  background: linear-gradient(135deg, #eef2ff, #fce7f3);
  border-radius: 12px; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-3); font-size: 48px;
}
.video-hero .cover img { width: 100%; height: 100%; object-fit: cover; }
.video-hero .info h1 { margin: 0 0 8px; font-size: 22px; line-height: 1.4; }
.video-hero .info .meta {
  color: var(--text-3); font-size: 13px; margin-bottom: 16px;
}
.video-hero .info .meta span { margin-right: 14px; }

.metrics-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
  margin-top: 20px;
}
.metric {
  padding: 14px; background: var(--panel-soft); border-radius: 10px;
  text-align: center; border: 1px solid var(--border);
}
.metric .lbl { color: var(--text-3); font-size: 12px; }
.metric .val {
  font-size: 22px; font-weight: 700; color: var(--text);
  margin-top: 4px;
}
.metric.like .val { color: var(--pink); }
.metric.comment .val { color: var(--warn); }
.metric.share .val { color: var(--success); }
.metric.score .val { color: var(--brand); }

.score-ring {
  display: flex; align-items: center; gap: 20px;
  padding: 16px 20px; background: linear-gradient(135deg, #eef2ff, #fce7f3);
  border-radius: 12px; margin-top: 16px;
}
.score-ring .num {
  font-size: 36px; font-weight: 800;
  background: linear-gradient(135deg, var(--brand), var(--pink));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  min-width: 80px;
}
.score-ring .desc {
  color: var(--text-2); font-size: 13px; line-height: 1.6;
}

.chip {
  display: inline-block; padding: 4px 12px;
  background: var(--panel-soft); color: var(--text-2);
  border-radius: 20px; font-size: 12px; margin: 2px 4px 2px 0;
  border: 1px solid var(--border);
}
.chip.pink { background: #fdf2f8; color: var(--pink); border-color: #fbcfe8; }
.chip.brand { background: #eef2ff; color: var(--brand); border-color: #c7d2fe; }
.chip.green { background: #ecfdf5; color: var(--success); border-color: #a7f3d0; }

.highlights-list {
  list-style: none; padding: 0; margin: 0;
}
.highlights-list li {
  padding: 12px 14px; background: var(--panel-soft);
  border-radius: 10px; margin-bottom: 8px;
  font-size: 13px; color: var(--text); line-height: 1.6;
  border-left: 3px solid var(--brand);
}

.copy-block {
  background: #0f172a; color: #e2e8f0;
  padding: 16px; border-radius: 10px;
  font-family: "SF Mono", Menlo, Monaco, monospace;
  font-size: 13px; line-height: 1.7;
  white-space: pre-wrap; word-break: break-word;
  max-height: 400px; overflow-y: auto;
}

/* ============ Top 爆款条 ============ */
.hot-list { display: flex; flex-direction: column; gap: 8px; }
.hot-item {
  display: flex; align-items: center; gap: 14px; padding: 12px 14px;
  background: var(--panel-soft); border-radius: 10px;
  border: 1px solid transparent; transition: all 0.15s;
}
.hot-item:hover { border-color: var(--brand); background: #fff; }
.hot-item .rk {
  width: 28px; height: 28px; border-radius: 8px;
  background: #e2e8f0; color: var(--text-2);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px;
}
.hot-item .rk.gold { background: linear-gradient(135deg, #fbbf24, #f59e0b); color: #fff; }
.hot-item .rk.silver { background: linear-gradient(135deg, #cbd5e1, #94a3b8); color: #fff; }
.hot-item .rk.bronze { background: linear-gradient(135deg, #fbbf24, #ea580c); color: #fff; }
.hot-item .info { flex: 1; min-width: 0; }
.hot-item .info .t {
  font-size: 13px; color: var(--text); font-weight: 500;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.hot-item .info .m { font-size: 11px; color: var(--text-3); margin-top: 3px; }
.hot-item .like {
  font-weight: 700; color: var(--pink); font-size: 14px;
  white-space: nowrap;
}

/* ============ empty ============ */
.empty {
  background: var(--panel); padding: 60px 40px; border-radius: 16px;
  text-align: center; color: var(--text-2);
  border: 1px dashed var(--border);
}
.empty .icon-lg { font-size: 48px; margin-bottom: 12px; opacity: 0.4; }
.empty pre {
  display: inline-block; padding: 10px 16px; background: #0f172a;
  color: #f8fafc; border-radius: 8px; text-align: left;
  font-size: 12px;
}

.footer {
  max-width: 1360px; margin: 40px auto 32px;
  padding: 0 24px; text-align: center;
  color: var(--text-3); font-size: 12px;
}
.footer .footer-inner {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px;
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow);
  color: var(--text-2); font-size: 12.5px;
  letter-spacing: 0.3px;
}
.footer .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--pink));
  box-shadow: 0 0 8px rgba(139, 92, 246, 0.6);
  display: inline-block;
}
.footer .heart {
  color: var(--pink); font-size: 13px;
  animation: heartbeat 1.4s ease-in-out infinite;
}
.footer .sep { color: var(--text-3); opacity: 0.6; }
.footer .brand-gradient {
  font-weight: 700; font-size: 13.5px;
  background: linear-gradient(135deg, var(--brand), var(--pink));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 1px;
}
@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  25% { transform: scale(1.2); }
  50% { transform: scale(1); }
  75% { transform: scale(1.15); }
}

/* ============ 移动端适配 ============ */
/* 平板及以下 */
@media (max-width: 900px) {
  .container { margin: 20px auto 40px; padding: 0 14px; }
  .page-header { align-items: flex-start; margin-bottom: 18px; }
  .page-header h1 { font-size: 22px; }
  .page-header .subtitle { font-size: 12.5px; }

  /* 视频详情 4 指标 -> 2 列 */
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 手机 */
@media (max-width: 640px) {
  /* 顶栏：品牌 + 导航垂直堆叠，nav 可横滑 */
  .topbar {
    padding: 10px 14px;
    flex-direction: column; align-items: stretch; gap: 8px;
  }
  .topbar .brand { justify-content: flex-start; font-size: 15px; gap: 8px; }
  .topbar .brand .brand-name { font-size: 15px; }
  .topbar .brand .brand-en { font-size: 10px; letter-spacing: 1px; padding-left: 6px; }
  .topbar nav {
    gap: 2px; overflow-x: auto; -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .topbar nav::-webkit-scrollbar { display: none; }
  .topbar nav a { padding: 6px 12px; font-size: 13px; white-space: nowrap; flex-shrink: 0; }

  /* 过滤条：每个 label 占满整行更好点 */
  .filter-bar { padding: 12px; gap: 10px; }
  .filter-bar label { width: 100%; }
  .filter-bar select { width: 100%; padding: 9px 12px; font-size: 14px; }
  .filter-bar .checkbox-label { width: auto; }
  .filter-bar button { width: 100%; padding: 10px; font-size: 14px; }

  /* KPI 卡片 -> 2 列，数字缩小 */
  .kpi-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .kpi-card { padding: 14px; border-radius: 12px; }
  .kpi-card .label { font-size: 11.5px; }
  .kpi-card .value { font-size: 20px; }
  .kpi-card .sub { font-size: 11px; }

  /* 榜单大表：给外面加横滑容器；见 index.html 结构调整 */
  .rank-table-wrap {
    overflow-x: auto; -webkit-overflow-scrolling: touch;
    border-radius: 14px; box-shadow: var(--shadow);
    border: 1px solid var(--border);
    background: var(--panel);
  }
  .rank-table {
    border-radius: 0; box-shadow: none; border: none;
    min-width: 720px;   /* 避免列被压扁 */
  }
  .rank-table th, .rank-table td { padding: 10px 12px; font-size: 12.5px; }
  .rank-table th { font-size: 11px; }
  .title .desc { max-width: 240px; -webkit-line-clamp: 2; }

  /* 手机端：把「操作」列隐藏，改在标题单元格底部显示按钮组，避免用户找不到入口 */
  .rank-table th:last-child,
  .rank-table td:last-child { display: none; }
  .mobile-actions {
    display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap;
  }
  .mobile-actions .action-btn {
    padding: 7px 14px; font-size: 12.5px; font-weight: 500;
  }

  /* 面板 & 图表 */
  .panel { padding: 16px; border-radius: 12px; }
  .panel-header { flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
  .panel-title { font-size: 14px; }
  .chart-box { height: 220px; }
  .chart-box.tall { height: 260px; }

  /* 公式卡片 */
  .formula-grid { grid-template-columns: 1fr; gap: 10px; }
  .formula-card { padding: 14px; }

  /* 视频详情页 */
  .video-hero { padding: 16px; border-radius: 12px; }
  .video-hero .info h1 { font-size: 18px; }
  .video-hero .cover { max-width: 260px; margin: 0 auto; }
  .metrics-grid { gap: 8px; }
  .metric { padding: 10px; }
  .metric .val { font-size: 18px; }
  .score-ring { flex-direction: column; text-align: center; padding: 14px; }
  .score-ring .num { font-size: 30px; min-width: auto; }
  .copy-block { font-size: 12px; padding: 12px; max-height: 300px; }

  /* 底部胶囊 */
  .footer { margin: 24px auto 20px; padding: 0 14px; }
  .footer .footer-inner {
    flex-wrap: wrap; justify-content: center; gap: 6px;
    padding: 8px 16px; font-size: 11.5px;
    border-radius: 20px;
  }
  .footer .brand-gradient { font-size: 12.5px; }

  /* empty */
  .empty { padding: 40px 20px; }
  .empty pre { font-size: 11px; word-break: break-all; white-space: pre-wrap; }
}

/* 超小屏 */
@media (max-width: 380px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============ 登录页 ============ */
.login-body {
  min-height: 100vh; margin: 0;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #4c1d95 100%);
}
/* 装饰性彩色光斑 */
.login-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(600px circle at 15% 20%, rgba(139, 92, 246, 0.35), transparent 60%),
    radial-gradient(500px circle at 85% 75%, rgba(236, 72, 153, 0.28), transparent 60%),
    radial-gradient(400px circle at 50% 100%, rgba(99, 102, 241, 0.25), transparent 60%);
}
.login-wrap {
  position: relative; z-index: 1;
  width: 100%; max-width: 440px; padding: 24px;
}
.login-card {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
  border-radius: 20px;
  padding: 40px 36px 28px;
  box-shadow:
    0 24px 60px rgba(15, 23, 42, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}
.login-brand {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 28px;
}
.login-brand .logo {
  width: 42px; height: 42px; border-radius: 12px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-size: 22px;
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}
.login-brand .txt .name {
  font-size: 18px; font-weight: 700; color: var(--text);
  line-height: 1.1;
}
.login-brand .txt .en {
  font-size: 11px; color: var(--text-3);
  letter-spacing: 2px; margin-top: 3px;
}

.login-title {
  margin: 0 0 6px; font-size: 26px; font-weight: 700;
  background: linear-gradient(135deg, var(--brand), var(--pink));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.login-sub {
  margin: 0 0 24px; color: var(--text-2); font-size: 13.5px;
}

.login-err {
  padding: 10px 14px; border-radius: 10px;
  background: #fef2f2; color: #b91c1c;
  border: 1px solid #fecaca;
  font-size: 13px; margin-bottom: 18px;
  display: flex; align-items: center; gap: 8px;
}

.login-form { display: flex; flex-direction: column; gap: 14px; }
.login-form .fld { display: flex; flex-direction: column; gap: 6px; }
.login-form .fld-lbl {
  font-size: 12.5px; color: var(--text-2); font-weight: 500;
  letter-spacing: 0.3px;
}
.login-form input {
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: #fff;
  font-size: 14px; color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
  font-family: inherit;
}
.login-form input::placeholder { color: #cbd5e1; }
.login-form input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.12);
}

.login-btn {
  margin-top: 8px;
  padding: 13px 20px;
  border: none; border-radius: 10px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff; font-size: 15px; font-weight: 600;
  letter-spacing: 2px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35);
}
.login-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(99, 102, 241, 0.45);
}
.login-btn:active { transform: translateY(0); opacity: 0.92; }

.login-foot {
  margin-top: 26px; padding-top: 18px;
  border-top: 1px dashed var(--border);
  text-align: center;
  font-size: 11.5px; color: var(--text-3);
  display: flex; align-items: center; justify-content: center; gap: 6px;
}

/* 顶栏用户菜单 */
.topbar .user-menu {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 4px 4px 4px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
  font-size: 12.5px;
  margin-left: 6px;
}
.topbar .user-menu .u-name { color: #fff; font-weight: 500; }
.topbar .user-menu .logout {
  padding: 4px 10px; border-radius: 999px;
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  font-size: 11.5px;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.topbar .user-menu .logout:hover {
  background: rgba(239, 68, 68, 0.85);
  color: #fff; text-decoration: none;
}

@media (max-width: 640px) {
  .login-card { padding: 32px 24px 20px; border-radius: 16px; }
  .login-title { font-size: 22px; }
  .login-brand .logo { width: 38px; height: 38px; font-size: 20px; }
  .topbar .user-menu { align-self: flex-end; margin-left: 0; margin-top: 2px; }
}