/* ==========================================================================
   全球数据中心地图 · 中文版
   设计体系参考 datacentermap.com（Fomantic / Semantic UI）
   —— 主蓝 #2185D0 · 链接 #4183C4 · 深色段 #1B1C1D · 灰按钮 #E0E1E2
      正文 rgba(0,0,0,.87) · 边框 rgba(34,36,38,.15) · 圆角 4px
      字体 Lato（本地化）· 标题 Trebuchet MS
   ========================================================================== */

/* ---------- 字体（本地 woff2，不依赖 CDN） ---------- */
@font-face {
  font-family: "LatoLocal"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("../vendor/fonts/lato-400.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "LatoLocal"; font-style: normal; font-weight: 700; font-display: swap;
  src: url("../vendor/fonts/lato-700.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "LatoLocal"; font-style: normal; font-weight: 900; font-display: swap;
  src: url("../vendor/fonts/lato-900.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "LatoLocal"; font-style: italic; font-weight: 400; font-display: swap;
  src: url("../vendor/fonts/lato-400-italic.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ---------- 设计令牌 ---------- */
:root {
  /* 主色 / 链接 */
  --primary: #2185d0;
  --primary-h: #1678c2;
  --primary-d: #1a69a4;
  --primary-soft: #ddeffa;
  --primary-soft-2: #eef7fd;
  --link: #4183c4;
  --link-h: #1e70bf;

  /* 中性 */
  --ink: rgba(0, 0, 0, 0.87);
  --ink-2: rgba(0, 0, 0, 0.6);
  --ink-3: rgba(0, 0, 0, 0.4);
  --line: rgba(34, 36, 38, 0.15);
  --line-2: rgba(34, 36, 38, 0.22);
  --bg: #ffffff;
  --bg-sub: #fafafa;
  --bg-alt: #f3f4f5;
  --panel: #ffffff;

  /* 深色段（导航 / 页脚 / Hero） */
  --dark: #1b1c1d;
  --dark-2: #27292a;
  --dark-3: #333436;
  --dark-line: rgba(255, 255, 255, 0.12);
  --dark-ink: rgba(255, 255, 255, 0.92);
  --dark-ink-2: rgba(255, 255, 255, 0.6);
  --dark-ink-3: rgba(255, 255, 255, 0.42);
  --btn-gray: #e0e1e2;
  --btn-gray-h: #cacbcd;

  /* 语义色 */
  --ok: #21ba45;
  --warn: #fbbd08;
  --err: #db2828;
  --star: #f5a623;
  --teal: #00b5ad;
  --teal-d: #009c95;

  /* 形状 */
  --r: 4px;
  --r-lg: 6px;
  --pill: 500rem;
  --sh1: 0 1px 2px 0 rgba(34, 36, 38, 0.15);
  --sh2: 0 1px 3px 0 #d4d4d5, 0 0 0 1px #d4d4d5;
  --sh3: 0 2px 4px 0 rgba(34, 36, 38, 0.12), 0 2px 10px 0 rgba(34, 36, 38, 0.15);
  --sh4: 0 12px 40px rgba(0, 0, 0, 0.3);

  /* 排版 */
  --font: "LatoLocal", "Lato", "Helvetica Neue", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
  --font-d: "Trebuchet MS", "LatoLocal", "Lato", "Helvetica Neue", "Microsoft YaHei", "PingFang SC", sans-serif;

  /* 兼容旧变量名 */
  --muted: var(--ink-2);
  --blue: var(--primary);
  --blue-d: var(--primary-d);
  --shadow: var(--sh1);
}

/* ---------- 基础 ---------- */
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.4285em;
  color: var(--ink);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--link); }
a:hover { color: var(--link-h); }

/* 动态数字一律等宽，避免计数时横向抖动 */
.num, .n, .count, .kpi-num, .stat .num, .stat-item .n,
.bar-val, .hl-num, .hl-count, .badge, #stat-inview, #stat-total,
#stat-country, #stat-company, .compare-info b, .chip .c {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}
h1, h2, h3, h4 { font-family: var(--font-d); font-weight: 700; text-wrap: balance; }
p, li { text-wrap: pretty; }
.hero-title, .sect-inner h2 { text-wrap: balance; }
.hero-sub, .sect-inner p { text-wrap: pretty; }
code, kbd { font-family: Consolas, Monaco, monospace; }
::selection { background: var(--primary-soft); }
img { outline: 1px solid rgba(0, 0, 0, 0.1); outline-offset: -1px; }
body.dark img { outline-color: rgba(255, 255, 255, 0.1); }
/* 底图瓦片不要描边（否则出现网格线） */
.leaflet-tile, .hero-map img, #map img { outline: none; }

/* 交互反馈：按下轻微缩放（0.96）——比 0.9 更克制 */
.btn:active, .link-btn:active, .chip:active, .toggle:active,
.map-btn:active, .loadmore:active, .tab:active, .hero-btn:active,
.hero-search button:active, .drawer-close:active, .icon-btn:active {
  transform: scale(0.96);
}
.btn, .link-btn, .chip, .toggle, .map-btn, .loadmore, .tab, .btn.ghost.mini {
  transition-property: background-color, border-color, color, box-shadow, transform;
  transition-duration: .15s;
  transition-timing-function: cubic-bezier(0.2, 0, 0, 1);
  will-change: transform;
}

/* 命中区：小控件补齐到 ≥40px（用伪元素扩展，不改变视觉尺寸） */
.drawer-close, .icon-btn, .map-btn, .toggle, .btn.ghost.mini {
  position: relative;
}
.drawer-close::after, .icon-btn::after {
  content: ""; position: absolute; inset: -7px; border-radius: 50%;
}
.btn.ghost.mini::after, .toggle::after, .map-btn::after {
  content: ""; position: absolute; inset: -6px -4px;
}

/* 滚动条（Chrome/Safari） */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-alt); }
::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: var(--pill); }
::-webkit-scrollbar-thumb:hover { background: var(--ink-3); }

/* ==========================================================================
   顶栏（深色反相导航）
   ========================================================================== */
.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 20px;
  height: 54px;
  flex-shrink: 0;
  background: var(--dark);
  color: var(--dark-ink);
  border-bottom: 1px solid var(--dark-line);
  z-index: 1100;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: inherit; flex-shrink: 0; min-width: 0;
}
.brand .logo {
  display: flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; flex-shrink: 0;
  background: var(--primary); color: #fff;
  border-radius: var(--r); font-size: 15px; font-weight: 900;
}
.brand h1 {
  font-size: 17px; margin: 0; font-family: var(--font-d);
  color: var(--dark-ink); white-space: nowrap; letter-spacing: .2px;
}
.subtitle {
  margin: 0; font-size: 11px; color: var(--dark-ink-3);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.subtitle a { color: var(--dark-ink-2); text-decoration: none; }
.subtitle a:hover { color: #fff; text-decoration: underline; }

/* 主导航 */
.nav { display: flex; align-items: center; gap: 2px; margin-left: 6px; }
.nav a {
  display: block; padding: 7px 13px; border-radius: var(--r);
  font-size: 14px; color: var(--dark-ink-2); text-decoration: none;
  transition: background .15s, color .15s; white-space: nowrap;
}
.nav a:hover { background: rgba(255, 255, 255, 0.1); color: #fff; }
.nav a.active { background: var(--primary); color: #fff; font-weight: 700; }

.topbar-spacer { flex: 1; min-width: 8px; }
.topbar-right { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }

/* 顶栏统计 */
.stats { display: flex; gap: 22px; }
.stat { text-align: right; }
.stat .num {
  display: block; font-size: 17px; font-weight: 700; line-height: 1.1;
  color: #fff; font-variant-numeric: tabular-nums;
}
.stat .lbl { font-size: 11px; color: var(--dark-ink-3); }

/* ==========================================================================
   按钮
   ========================================================================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 5px;
  padding: 9px 16px; border: 1px solid transparent; border-radius: var(--r);
  background: var(--primary); color: #fff;
  font-family: inherit; font-size: 14px; font-weight: 700; line-height: 1;
  cursor: pointer; white-space: nowrap; text-decoration: none;
  transition: background .15s, color .15s, border-color .15s;
}
.btn:hover { background: var(--primary-h); color: #fff; }
.btn:active { background: var(--primary-d); }
.btn.ghost {
  background: var(--btn-gray); color: rgba(0, 0, 0, 0.6); border-color: transparent;
}
.btn.ghost:hover { background: var(--btn-gray-h); color: rgba(0, 0, 0, 0.8); }
.btn.ghost.mini { padding: 6px 11px; font-size: 12px; }
.btn.mini { padding: 6px 13px; font-size: 12px; }
.btn.on { background: var(--primary-h); color: #fff; }

/* 顶栏内的按钮（深色底） */
.topbar .btn.ghost {
  background: rgba(255, 255, 255, 0.12); color: var(--dark-ink);
  border-color: rgba(255, 255, 255, 0.28);
}
.topbar .btn.ghost:hover { background: rgba(255, 255, 255, 0.22); color: #fff; }

.badge {
  font-size: 11px; font-weight: 700; color: #fff; background: var(--err);
  border-radius: var(--r); padding: 2px 7px; white-space: nowrap;
}

/* ==========================================================================
   布局
   ========================================================================== */
.layout { flex: 1; display: flex; min-height: 0; }

/* 侧栏 */
.sidebar {
  width: 380px; min-width: 380px;
  background: var(--panel);
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column; min-height: 0;
  transition: width .22s ease, min-width .22s ease, opacity .18s ease;
  overflow: hidden;
}
.filters {
  padding: 14px; border-bottom: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 10px;
  background: var(--bg-sub);
}

/* 表单控件 */
.search, .select, .rng {
  width: 100%; padding: 9px 12px;
  border: 1px solid var(--line); border-radius: var(--r);
  background: var(--bg); color: var(--ink);
  font-family: inherit; font-size: 14px; outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.search::placeholder, .rng::placeholder { color: var(--ink-3); }
.search:focus, .select:focus, .rng:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(33, 133, 208, 0.18);
}
.select {
  appearance: none; -webkit-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-2) 50%),
                    linear-gradient(135deg, var(--ink-2) 50%, transparent 50%);
  background-position: calc(100% - 16px) 50%, calc(100% - 11px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 30px; cursor: pointer;
}

.row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.row .select, .row .search { flex: 1; min-width: 120px; }
.sort { flex: 1; }
.hint { font-size: 12px; color: var(--ink-2); }

/* ==========================================================================
   标签 / 连接能力开关
   ========================================================================== */
.chips {
  padding: 10px 14px; border-bottom: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
  background: var(--panel);
}
.chips-label { font-size: 12px; color: var(--ink-2); }
.chip {
  font-size: 12px; padding: 3px 10px; border-radius: var(--r);
  border: 1px solid var(--line); background: var(--bg-sub); color: var(--ink-2);
  cursor: pointer; transition: background-color .15s, border-color .15s, color .15s, box-shadow .15s;
}
.chip:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

.conn { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.conn-label { font-size: 12px; color: var(--ink-2); }
.toggle {
  font-size: 12px; padding: 5px 11px; border: 1px solid var(--line);
  border-radius: var(--r); background: var(--bg); color: var(--ink-2);
  font-family: inherit; cursor: pointer; transition: background-color .15s, border-color .15s, color .15s, box-shadow .15s;
}
.toggle:hover { border-color: var(--primary); color: var(--primary); }
.toggle.on { background: var(--primary); color: #fff; border-color: var(--primary); font-weight: 700; }

/* ==========================================================================
   高级筛选
   ========================================================================== */
.adv {
  padding: 12px 14px; border-bottom: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 12px;
  background: var(--primary-soft-2);
}
.adv.hidden { display: none; }
.adv-group { display: flex; flex-direction: column; gap: 6px; }
.adv-title {
  font-size: 11px; font-weight: 700; color: var(--ink-2);
  text-transform: uppercase; letter-spacing: .5px;
}
.checks { display: flex; flex-wrap: wrap; gap: 4px 14px; }
.checks label {
  font-size: 13px; display: inline-flex; align-items: center; gap: 5px; cursor: pointer;
  color: var(--ink);
}
.checks input[type="checkbox"] { accent-color: var(--primary); width: 14px; height: 14px; cursor: pointer; }
.range { display: flex; align-items: center; gap: 8px; }
.dash { color: var(--ink-3); }

/* ==========================================================================
   KPI 汇总条
   ========================================================================== */
.kpi {
  display: flex; gap: 1px; padding: 0; border-bottom: 1px solid var(--line);
  background: var(--line);
}
.kpi-cell {
  flex: 1; text-align: center; padding: 11px 6px; background: var(--panel);
}
.kpi-num {
  display: block; font-size: 17px; font-weight: 700; line-height: 1.2;
  color: var(--primary); font-variant-numeric: tabular-nums;
}
.kpi-lbl { font-size: 11px; color: var(--ink-2); }

/* ==========================================================================
   图表
   ========================================================================== */
.chart-panel { padding: 12px 14px; border-bottom: 1px solid var(--line); background: var(--panel); }
.chart-title {
  font-size: 11px; font-weight: 700; color: var(--ink-2);
  text-transform: uppercase; letter-spacing: .5px; margin-bottom: 9px;
}
.bars { display: flex; flex-direction: column; gap: 5px; max-height: 220px; overflow-y: auto; }
.bar-row { display: flex; align-items: center; gap: 8px; font-size: 12px; cursor: pointer; }
.bar-label {
  width: 92px; flex-shrink: 0; white-space: nowrap; overflow: hidden;
  text-overflow: ellipsis; color: var(--ink); transition: color .15s;
}
.bar-row:hover .bar-label { color: var(--primary); }
.bar-track { flex: 1; height: 8px; background: var(--bg-alt); border-radius: var(--pill); overflow: hidden; }
.bar-fill { display: block; height: 100%; background: var(--primary); border-radius: var(--pill); transition: width .3s ease; }
.bar-val { width: 44px; text-align: right; color: var(--ink-2); flex-shrink: 0; font-variant-numeric: tabular-nums; }
.empty { font-size: 12px; color: var(--ink-3); padding: 6px 0; }

/* ==========================================================================
   列表
   ========================================================================== */
.tabs {
  display: flex; gap: 0; padding: 0 14px; margin-top: 6px;
  border-bottom: 1px solid var(--line); background: var(--panel);
}
.tab {
  flex: 1; padding: 10px 10px 9px; font-size: 13px; text-align: center;
  font-family: inherit; cursor: pointer;
  border: none; border-bottom: 2px solid transparent; background: transparent;
  color: var(--ink-2); transition: color .15s, border-color .15s;
}
.tab:hover { color: var(--primary); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 700; }

.list-head {
  padding: 10px 16px; font-size: 13px; font-weight: 700; color: var(--ink);
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  border-bottom: 1px solid var(--line); background: var(--panel);
}
.list-head .head-right { display: flex; align-items: center; gap: 8px; font-weight: 400; }
.list-head .count {
  background: var(--primary); color: #fff; border-radius: var(--r);
  padding: 2px 8px; font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums;
}

.list { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; background: var(--panel); }
.item {
  position: relative; padding: 11px 16px;
  border-bottom: 1px solid var(--line); cursor: pointer;
  transition: background .15s;
}
.item:hover { background: var(--bg-sub); }
.item.active { background: var(--primary-soft-2); box-shadow: inset 3px 0 0 var(--primary); }
.item .name { font-size: 14px; font-weight: 700; color: var(--ink); padding-right: 62px; }
.item .meta {
  font-size: 12px; color: var(--ink-2); margin-top: 4px;
  display: flex; gap: 6px; flex-wrap: wrap;
}
.item .tag {
  background: var(--bg-alt); border-radius: var(--r);
  padding: 1px 7px; color: var(--ink-2);
}
.item .tag.city { background: var(--primary-soft); color: var(--primary-d); }
.list .empty { padding: 22px 14px; color: var(--ink-3); font-size: 13px; text-align: center; }

.item-tools { position: absolute; top: 9px; right: 12px; display: flex; gap: 4px; }
.ico {
  width: 26px; height: 26px; border-radius: var(--r);
  border: 1px solid var(--line); background: var(--bg); color: var(--ink-3);
  cursor: pointer; font-size: 13px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: background-color .15s, color .15s, opacity .15s;
}
.ico:hover { border-color: var(--primary); color: var(--primary); }
.ico.fav.on { color: var(--star); border-color: var(--star); background: #fff8ec; }
.ico.cmp.on { color: #fff; border-color: var(--primary); background: var(--primary); }

.loadmore {
  width: 100%; padding: 11px; border: none; border-top: 1px solid var(--line);
  background: var(--bg-sub); color: var(--primary);
  font-family: inherit; font-size: 13px; font-weight: 700; cursor: pointer;
  transition: background .15s;
}
.loadmore:hover { background: var(--primary-soft-2); }

/* ==========================================================================
   地图
   ========================================================================== */
.map-wrap { position: relative; flex: 1; min-width: 0; background: var(--bg-alt); }
#map { position: absolute; inset: 0; }
.map-tip {
  position: absolute; bottom: 14px; left: 14px; z-index: 500;
  background: var(--bg); border: 1px solid var(--line);
  padding: 7px 12px; border-radius: var(--r);
  font-size: 12px; color: var(--ink-2); box-shadow: var(--sh1);
}
.map-tools { position: absolute; top: 12px; right: 12px; z-index: 600; display: flex; gap: 8px; }
.map-btn {
  font-family: inherit; font-size: 12px; font-weight: 700;
  padding: 8px 13px; border: 1px solid var(--line); border-radius: var(--r);
  background: var(--bg); color: var(--ink); cursor: pointer; box-shadow: var(--sh1);
  transition: background-color .15s, border-color .15s, color .15s, box-shadow .15s;
}
.map-btn:hover { border-color: var(--primary); color: var(--primary); }
.map-btn.on { background: var(--primary); color: #fff; border-color: var(--primary); }
.heat-canvas { position: absolute; top: 0; left: 0; }

/* 标记 */
.dc-pin {
  background: var(--primary);
  border: 2px solid #fff;
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(26, 105, 164, 0.6);
}
/* 聚类配色统一为品牌蓝（按规模分三档深浅） */
.marker-cluster-small, .marker-cluster-medium, .marker-cluster-large { background: none; }
.marker-cluster-small div, .marker-cluster-medium div, .marker-cluster-large div {
  color: #fff; font-weight: 700; font-family: var(--font);
  box-shadow: 0 1px 4px rgba(26, 105, 164, 0.45);
}
.marker-cluster-small { background-color: rgba(33, 133, 208, 0.22); }
.marker-cluster-small div { background-color: rgba(33, 133, 208, 0.78); }
.marker-cluster-medium { background-color: rgba(26, 105, 164, 0.28); }
.marker-cluster-medium div { background-color: rgba(26, 105, 164, 0.88); }
.marker-cluster-large { background-color: rgba(18, 76, 120, 0.34); }
.marker-cluster-large div { background-color: rgba(18, 76, 120, 0.94); }

/* 数值标签统一等宽数字，避免跳动 */
.bar-val, .kpi-num, .stat .num, .hl-sub, .list-head .count, .cthumb { font-variant-numeric: tabular-nums; }

/* 加载遮罩 */
.loading {
  position: absolute; inset: 0; z-index: 1000;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: var(--bg); gap: 14px;
}
.loading.hidden { display: none; }
.spinner {
  width: 34px; height: 34px;
  border: 3px solid var(--bg-alt);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .85s linear infinite;
}
.loading-text { font-size: 13px; color: var(--ink-2); }
@keyframes spin { to { transform: rotate(360deg); } }

/* 气泡 */
.popup { font-size: 13px; line-height: 1.6; max-width: 290px; }
.popup h3 { margin: 0 0 7px; font-size: 15px; color: var(--primary); }
.popup .kv { display: flex; gap: 6px; }
.popup .k { color: var(--ink-2); min-width: 74px; flex-shrink: 0; }
.popup .chips { margin-top: 7px; padding: 0; border: none; background: transparent; gap: 4px; }
.popup .chip {
  display: inline-block; background: var(--bg-alt); border: none;
  border-radius: var(--r); padding: 1px 7px; margin: 0; font-size: 11px; color: var(--ink-2);
}
.leaflet-popup-content-wrapper { border-radius: var(--r); }

/* ==========================================================================
   详情抽屉
   ========================================================================== */
.drawer {
  position: absolute; top: 0; right: 0; bottom: 0;
  width: 364px; max-width: 88%;
  background: var(--panel); border-left: 1px solid var(--line);
  box-shadow: -4px 0 18px rgba(34, 36, 38, 0.14); z-index: 900;
  transform: translateX(100%); transition: transform .26s ease;
  overflow-y: auto; padding: 20px 20px 28px;
}
.drawer.open { transform: translateX(0); }
.drawer-close {
  position: absolute; top: 12px; right: 12px;
  width: 30px; height: 30px; border: none; border-radius: var(--r);
  background: transparent; color: var(--ink-3); font-size: 17px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background-color .15s, color .15s;
}
.drawer-close:hover { background: var(--bg-alt); color: var(--ink); }
.detail-head h2 {
  font-size: 19px; margin: 0 32px 4px 0; color: var(--ink); line-height: 1.3;
}
.detail-sub { font-size: 13px; color: var(--ink-2); margin-bottom: 14px; }
.detail-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.d-btn {
  font-family: inherit; font-size: 12px; font-weight: 700;
  padding: 6px 12px; border: 1px solid var(--line); border-radius: var(--r);
  background: var(--bg); color: var(--ink-2); cursor: pointer; transition: background-color .15s, border-color .15s, color .15s, box-shadow .15s;
}
.d-btn:hover { border-color: var(--primary); color: var(--primary); }
.d-btn.on { background: var(--primary); color: #fff; border-color: var(--primary); }
.detail-grid { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--line); }
.detail-grid .kv {
  display: flex; gap: 10px; font-size: 13px; line-height: 1.6;
  padding: 7px 0; border-bottom: 1px solid var(--line);
}
.detail-grid .k { color: var(--ink-2); min-width: 84px; flex-shrink: 0; }
.detail-grid .kv > span:last-child { flex: 1; word-break: break-word; }
.drawer .kv a { color: var(--link); text-decoration: none; word-break: break-all; }
.drawer .kv a:hover { color: var(--link-h); text-decoration: underline; }

/* ==========================================================================
   对比工具条 / 弹窗
   ========================================================================== */
.compare-bar {
  position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); z-index: 1200;
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--r-lg); box-shadow: var(--sh3);
}
.compare-info { font-size: 13px; color: var(--ink-2); }
.compare-info b { color: var(--primary); font-size: 15px; }
.compare-thumbs { display: flex; gap: 6px; flex-wrap: wrap; max-width: 420px; }
.cthumb {
  font-size: 11px; padding: 3px 9px; border-radius: var(--r);
  background: var(--primary-soft); color: var(--primary-d);
  cursor: pointer; white-space: nowrap; max-width: 130px;
  overflow: hidden; text-overflow: ellipsis; transition: background .15s;
}
.cthumb:hover { background: var(--primary); color: #fff; }

.modal {
  position: fixed; inset: 0; z-index: 1300; background: rgba(27, 28, 29, 0.62);
  display: flex; align-items: center; justify-content: center; padding: 24px;
}
.modal-box {
  background: var(--panel); border-radius: var(--r-lg);
  max-width: 960px; width: 100%; max-height: 86vh; overflow: auto;
  box-shadow: var(--sh4);
}
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--line);
}
.modal-head h2 { margin: 0; font-size: 19px; color: var(--ink); }
.compare-body { padding: 12px 16px 20px; overflow-x: auto; }
.ctable { width: 100%; border-collapse: collapse; font-size: 13px; }
.ctable th, .ctable td {
  border: 1px solid var(--line); padding: 8px 10px;
  text-align: left; vertical-align: top;
}
.ctable thead th {
  background: var(--bg-alt); color: var(--ink); font-weight: 700;
  position: sticky; top: 0; white-space: nowrap;
}
.ctable .ct-k { color: var(--ink-2); background: var(--bg-sub); white-space: nowrap; font-weight: 700; }

/* ==========================================================================
   运营商目录 / 档案
   ========================================================================== */
li.co-item {
  display: flex; flex-direction: column; gap: 6px; padding: 12px 16px;
  border-bottom: 1px solid var(--line); cursor: pointer;
  transition: background .15s; position: relative;
}
li.co-item:hover { background: var(--bg-sub); }
li.co-item .name { font-size: 14px; font-weight: 700; color: var(--ink); }
li.co-item .meta { font-size: 12px; color: var(--ink-2); display: flex; gap: 6px; flex-wrap: wrap; }
li.co-item .tag {
  font-size: 11px; padding: 2px 8px; border-radius: var(--r);
  align-self: flex-start; background: var(--bg-alt); color: var(--ink-2);
}

.co-meta {
  display: flex; flex-direction: column; gap: 9px; margin-bottom: 16px;
  padding: 15px; border-radius: var(--r); background: var(--bg-sub);
  border: 1px solid var(--line);
}
.co-logo {
  align-self: flex-start; font-size: 13px; font-weight: 900; letter-spacing: 1.5px;
  padding: 7px 15px; border-radius: var(--r); color: #fff; background: var(--primary);
}
.co-meta .kv { display: flex; gap: 8px; font-size: 13px; line-height: 1.6; }
.co-meta .k { color: var(--ink-2); min-width: 40px; flex-shrink: 0; }
.co-meta a { color: var(--link); text-decoration: none; word-break: break-all; }
.co-meta a:hover { color: var(--link-h); text-decoration: underline; }
.co-desc {
  margin-top: 3px; padding-top: 10px; border-top: 1px solid var(--line);
  font-size: 12.5px; line-height: 1.75; color: var(--ink-2);
}

/* ==========================================================================
   侧栏折叠
   ========================================================================== */
.layout.sidebar-collapsed .sidebar,
.sidebar-collapsed .sidebar { width: 0; min-width: 0; opacity: 0; border-right: none; }
.layout.sidebar-collapsed .map-wrap,
.layout.sidebar-collapsed .list-wrap { flex: 1; }

/* ==========================================================================
   显示控制（防止 display:flex 覆盖 [hidden]）
   ========================================================================== */
[hidden] { display: none !important; }
.drawer.hidden, .modal.hidden { display: none; }

/* ==========================================================================
   首页
   ========================================================================== */
body.home { display: block; height: auto; min-height: 100vh; background: var(--bg); }
body.home .topbar { position: sticky; top: 0; }
.home-main { display: block; }

/* ---------- Hero：深色地图背景 ---------- */
.hero {
  position: relative; overflow: hidden;
  min-height: 620px; height: 74vh; max-height: 820px;
  background: var(--dark);
  display: flex; align-items: center; justify-content: center;
}
.hero-map {
  position: absolute; inset: 0; z-index: 0;
  pointer-events: none;
  background: #20262c;
}
.hero-map .leaflet-container { background: #20262c; }
/* 深色蒙版：压暗地图、突出文案（保留可见的底图轮廓） */
.hero-veil {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% 42%, rgba(27, 28, 29, 0.18) 0%, rgba(27, 28, 29, 0.58) 58%, rgba(27, 28, 29, 0.86) 100%),
    linear-gradient(180deg, rgba(27, 28, 29, 0.78) 0%, rgba(27, 28, 29, 0.16) 30%, rgba(27, 28, 29, 0.3) 72%, rgba(27, 28, 29, 0.9) 100%);
}
.hero-inner {
  position: relative; z-index: 2; width: 100%; max-width: 940px;
  padding: 40px 22px; text-align: center; color: #fff;
}
.hero-kicker {
  display: inline-block; margin-bottom: 18px;
  font-size: 12px; font-weight: 700; letter-spacing: 2.4px; text-transform: uppercase;
  color: #7cc0ea; border: 1px solid rgba(124, 192, 234, 0.4);
  border-radius: var(--pill); padding: 5px 15px;
}
.hero-title {
  margin: 0 0 18px; font-family: var(--font-d);
  font-size: 44px; line-height: 1.16; font-weight: 700; letter-spacing: .5px;
  color: #fff; text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}
.hero-title em { font-style: normal; color: #7cc0ea; }
.hero-sub {
  margin: 0 auto 30px; max-width: 720px;
  font-size: 16px; line-height: 1.85; color: rgba(255, 255, 255, 0.78);
}
.hero-sub b { color: #fff; font-weight: 700; }

/* Hero 搜索框 */
.hero-search {
  display: flex; max-width: 660px; margin: 0 auto 24px;
  background: #fff; border-radius: var(--r); overflow: hidden;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.32);
}
.hero-search input {
  flex: 1; min-width: 0; border: none; outline: none; background: #fff;
  padding: 16px 20px; font-family: inherit; font-size: 15px; color: rgba(0, 0, 0, 0.87);
}
.hero-search input::placeholder { color: rgba(0, 0, 0, 0.4); }
.hero-search button {
  flex-shrink: 0; width: 62px; border: none; background: var(--primary);
  color: #fff; font-size: 18px; cursor: pointer; transition: background .15s;
}
.hero-search button:hover { background: var(--primary-h); }

/* Hero 按钮组 */
.hero-nav { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 168px; padding: 14px 28px;
  border-radius: var(--r); font-size: 17px; font-weight: 700;
  text-decoration: none; background: var(--primary); color: #fff;
  border: 1px solid transparent;
  transition: background-color .15s, border-color .15s, color .15s, box-shadow .15s;
}
.hero-btn:hover { background: var(--primary-h); color: #fff; }
.hero-btn.outline {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.55); color: #fff;
}
.hero-btn.outline:hover { background: rgba(255, 255, 255, 0.22); color: #fff; }
.hero-foot {
  position: absolute; bottom: 12px; left: 0; right: 0; z-index: 3;
  text-align: center; font-size: 11px; color: rgba(255, 255, 255, 0.45);
}

/* ---------- 统计条 ---------- */
.stat-strip {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px;
  background: var(--line); border-bottom: 1px solid var(--line);
}
.stat-item {
  background: var(--bg); padding: 26px 14px; text-align: center;
}
.stat-item .n {
  display: block; font-family: var(--font-d);
  font-size: 32px; font-weight: 700; line-height: 1.1;
  color: var(--ink); font-variant-numeric: tabular-nums;
}
.stat-item .n.accent { color: var(--primary); }
.stat-item .l {
  display: block; margin-top: 6px; font-size: 12px; color: var(--ink-2);
  text-transform: uppercase; letter-spacing: 1px; font-weight: 700;
}

/* ---------- 内容分区 ---------- */
.sect { padding: 62px 22px; border-bottom: 1px solid var(--line); }
.sect.alt { background: var(--bg-sub); }
.sect.dark { background: var(--dark); color: var(--dark-ink); border-bottom-color: var(--dark-line); }
.sect-inner { max-width: 1000px; margin: 0 auto; }
.sect-label {
  display: block; margin-bottom: 12px;
  font-size: 12px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase;
  color: var(--primary);
}
.sect h2 {
  margin: 0 0 16px; font-size: 29px; line-height: 1.3; color: var(--ink); font-weight: 700;
}
.sect.dark h2 { color: #fff; }
.sect p {
  margin: 0 0 16px; font-size: 15px; line-height: 1.95; color: var(--ink-2); max-width: 820px;
}
.sect.dark p { color: var(--dark-ink-2); }
.sect p b { color: var(--ink); font-weight: 700; }
.sect-btns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.link-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 11px 18px; border-radius: var(--r);
  background: var(--btn-gray); color: rgba(0, 0, 0, 0.6);
  font-size: 14px; font-weight: 700; text-decoration: none;
  transition: background-color .15s, color .15s, box-shadow .15s;
}
.link-btn:hover { background: var(--btn-gray-h); color: rgba(0, 0, 0, 0.85); }
.link-btn.primary { background: var(--primary); color: #fff; }
.link-btn.primary:hover { background: var(--primary-h); color: #fff; }
.link-btn.outline {
  background: transparent; border: 1px solid var(--line-2); color: var(--ink-2);
}
.link-btn.outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft-2); }
.sect.dark .link-btn {
  background: rgba(255, 255, 255, 0.12); color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.28);
}
.sect.dark .link-btn:hover { background: rgba(255, 255, 255, 0.24); }

/* 两栏特性网格 */
.feat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin-top: 26px; }
.feat {
  padding: 20px; border: 1px solid var(--line); border-radius: var(--r);
  background: var(--bg); transition: box-shadow .15s, border-color .15s;
}
.feat:hover { border-color: var(--primary); box-shadow: var(--sh3); }
.feat .fi { font-size: 26px; line-height: 1; margin-bottom: 10px; }
.feat h4 { margin: 0 0 7px; font-size: 16px; color: var(--ink); }
.feat p { margin: 0; font-size: 13px; line-height: 1.75; color: var(--ink-2); max-width: none; }

/* 首页榜单 */
.home-kpi { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin: 26px 0 0; }
.kpi-card {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 20px 12px; border-radius: var(--r);
  border: 1px solid var(--line); background: var(--bg);
}
.kpi-card .kpi-num { font-size: 26px; font-family: var(--font-d); }
.kpi-card .kpi-lbl { font-size: 12px; color: var(--ink-2); text-align: center; }

.home-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px; margin-top: 16px;
}
.home-panel {
  padding: 18px; border-radius: var(--r);
  border: 1px solid var(--line); background: var(--bg);
}
.home-panel h3 {
  margin: 0 0 14px; font-size: 15px; color: var(--ink);
  padding-bottom: 10px; border-bottom: 1px solid var(--line);
}
.hl-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.hl-chip {
  font-size: 12.5px; padding: 5px 12px; border-radius: var(--r);
  cursor: pointer; text-decoration: none;
  background: var(--bg-alt); color: var(--ink-2);
  transition: background-color .15s, border-color .15s, color .15s;
}
.hl-chip:hover { background: var(--primary); color: #fff; }
.hl-list { display: flex; flex-direction: column; gap: 2px; }
.hl-row {
  display: flex; align-items: baseline; justify-content: space-between; gap: 10px;
  padding: 8px 9px; border-radius: var(--r); cursor: pointer;
  text-decoration: none; transition: background .15s;
}
.hl-row:hover { background: var(--primary-soft-2); }
.hl-title {
  font-size: 13px; color: var(--ink); overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap;
}
.hl-sub { font-size: 11px; color: var(--ink-2); flex-shrink: 0; font-variant-numeric: tabular-nums; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--dark); color: var(--dark-ink-2); }
.site-footer .sf-inner {
  max-width: 1180px; margin: 0 auto; padding: 48px 22px 26px;
  display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 36px;
}
.sf-brand .logo {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; background: var(--primary); color: #fff;
  border-radius: var(--r); font-weight: 900; font-size: 16px;
}
.sf-brand .sf-name {
  display: block; margin: 12px 0 8px; font-family: var(--font-d);
  font-size: 17px; font-weight: 700; color: #fff;
}
.sf-brand p { margin: 0; font-size: 12.5px; line-height: 1.85; color: var(--dark-ink-3); }
.sf-col h4 {
  margin: 0 0 14px; font-size: 12px; font-weight: 700;
  letter-spacing: 1.4px; text-transform: uppercase; color: var(--dark-ink);
}
.sf-col a {
  display: block; padding: 4px 0; font-size: 13px;
  color: var(--dark-ink-2); text-decoration: none; transition: color .15s;
}
.sf-col a:hover { color: #fff; }
.sf-bottom {
  border-top: 1px solid var(--dark-line); padding: 16px 22px;
  text-align: center; font-size: 12px; color: var(--dark-ink-3);
}
.sf-bottom a { color: var(--dark-ink-2); text-decoration: none; }
.sf-bottom a:hover { color: #fff; text-decoration: underline; }
.home-footer { margin-top: 0; }

/* ==========================================================================
   暗色主题（仅重定义令牌，组件自动跟随）
   ========================================================================== */
body.dark {
  --ink: rgba(255, 255, 255, 0.92);
  --ink-2: rgba(255, 255, 255, 0.6);
  --ink-3: rgba(255, 255, 255, 0.4);
  --line: rgba(255, 255, 255, 0.12);
  --line-2: rgba(255, 255, 255, 0.24);
  --bg: #1b1c1d;
  --bg-sub: #202122;
  --bg-alt: #2c2e2f;
  --panel: #27292a;
  --btn-gray: #3a3c3d;
  --btn-gray-h: #47494a;
  --primary-soft: #1d3a52;
  --primary-soft-2: #21303c;
  --primary: #3d99d6;
  --primary-h: #4aa6e3;
  --primary-d: #2b7fb8;
  --link: #6fb3e0;
  --link-h: #96c9ec;
  --sh3: 0 2px 4px 0 rgba(0, 0, 0, 0.4), 0 2px 10px 0 rgba(0, 0, 0, 0.5);
  --sh2: 0 1px 3px 0 #101112, 0 0 0 1px #3a3c3d;
}
body.dark .btn.ghost { color: rgba(255, 255, 255, 0.75); }
body.dark .btn.ghost:hover { color: #fff; }
body.dark .link-btn { color: rgba(255, 255, 255, 0.75); }
body.dark .link-btn:hover { color: #fff; }
body.dark .link-btn.outline { background: transparent; }
body.dark .ico.fav.on { background: rgba(245, 166, 35, 0.16); }
body.dark .item.active { box-shadow: inset 3px 0 0 var(--primary); }
body.dark .map-tip { box-shadow: none; }
body.dark .ctable thead th { background: var(--bg-alt); }
body.dark .hero-map { background: #16171a; }
body.dark .hero-map .leaflet-container { background: #16171a; }
body.dark .marker-cluster-small div,
body.dark .marker-cluster-medium div,
body.dark .marker-cluster-large div { background: var(--primary); }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1080px) {
  .site-footer .sf-inner { grid-template-columns: 1fr 1fr; gap: 28px; }
  .stat-strip { grid-template-columns: repeat(3, 1fr); }
  .home-kpi { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  .hero { min-height: 540px; height: auto; padding: 60px 0; }
  .hero-title { font-size: 32px; }
  .hero-sub { font-size: 14.5px; }
  .stats { gap: 14px; }
  .stat .num { font-size: 15px; }
  .nav a { padding: 6px 9px; font-size: 13px; }
  .sect { padding: 44px 20px; }
  .sect h2 { font-size: 23px; }
}
@media (max-width: 820px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; min-width: 0; max-height: 46vh; }
  .hero-nav { flex-direction: column; align-items: stretch; }
  .hero-btn { width: 100%; }
  .stat-item { padding: 18px 10px; }
  .stat-item .n { font-size: 24px; }
}
@media (max-width: 620px) {
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
  .home-kpi { grid-template-columns: repeat(2, 1fr); }
  .site-footer .sf-inner { grid-template-columns: 1fr; }
  .hero-title { font-size: 26px; }
  .hero-search input { padding: 13px 15px; font-size: 14px; }
  .topbar { gap: 12px; padding: 0 12px; }
  .stats { display: none; }
}

/* ==========================================================================
   交互增强：回到顶部 / 搜索快捷键提示
   ========================================================================== */
.back-top {
  position: fixed; right: 22px; bottom: 78px; z-index: 1500;
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; line-height: 1; font-family: inherit;
  color: var(--ink-2); background: var(--bg);
  border: 1px solid var(--line); border-radius: var(--r);
  box-shadow: var(--sh2); cursor: pointer;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .18s cubic-bezier(0.2, 0, 0, 1),
              transform .18s cubic-bezier(0.2, 0, 0, 1),
              visibility .18s, background-color .15s, border-color .15s,
              color .15s, box-shadow .15s;
}
.back-top.show { opacity: 1; visibility: visible; transform: none; }
.back-top:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.back-top:active { transform: scale(0.96); }

/* 搜索框内的 "/" 快捷键提示 */
.kbd-hint {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  pointer-events: none;
}
.kbd-hint kbd {
  display: inline-block; min-width: 20px; padding: 1px 5px;
  font-family: inherit; font-size: 11px; font-weight: 700; line-height: 1.5;
  color: var(--ink-3); background: var(--bg-alt);
  border: 1px solid var(--line); border-radius: 3px;
}
/* 输入框留出提示位，避免文字被压住 */
.filters .search { padding-right: 34px; }
/* 对比工具条存在时，回到顶部按钮上移避让 */
.compare-bar:not([hidden]) ~ .back-top,
body:has(.compare-bar:not([hidden])) .back-top { bottom: 112px; }

@media (max-width: 640px) {
  .kbd-hint { display: none; }
  .filters .search { padding-right: 12px; }
  .back-top { right: 14px; bottom: 68px; }
}