/* ============================================================
   万博数据服务 · 共享样式 /assets/site.css
   夜间数据仪表盘 × 复古出版说明书
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, figcaption, blockquote, dl, dt, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg, video { display: block; max-width: 100%; }
table { border-collapse: collapse; width: 100%; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 900; line-height: 1.14; letter-spacing: -0.01em; }
hr { border: 0; border-top: 2px solid var(--wb-ink); }

::selection { background: var(--wb-violet); color: #FFFFFF; }

:focus-visible {
  outline: 2px solid var(--wb-orange);
  outline-offset: 3px;
}

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩 */
  --wb-indigo: #0F1A38;
  --wb-indigo-deep: #071127;
  --wb-ink: #1B2A5B;
  --wb-cream: #F3EDE1;
  --wb-brown: #241E1B;
  --wb-cyan: #2FE3D0;
  --wb-violet: #8B5CF6;
  --wb-orange: #FF8A3D;
  --wb-red: #D9432F;
  --wb-line: #55618F;
  --wb-mist: #C9F5EE;

  /* 字体 */
  --font-display: "Source Han Sans SC Condensed", "Source Han Sans SC", "Noto Sans SC Condensed", "Archivo Narrow", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, Consolas, "Liberation Mono", "Courier New", monospace;

  /* 结构 */
  --rail-w: 96px;
  --rail-top-h: 60px;
  --wrap: 1180px;
  --hard: 6px 6px 0 var(--wb-indigo-deep);
  --hard-paper: 6px 6px 0 var(--wb-brown);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 画布与中文排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  color: var(--wb-cream);
  background-color: var(--wb-indigo);
  padding-left: var(--rail-w);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(85, 97, 143, 0.11) 1px, transparent 1px),
    linear-gradient(90deg, rgba(85, 97, 143, 0.11) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.75;
}

main {
  position: relative;
  z-index: 1;
  display: block;
  min-height: 40vh;
}

p { max-width: 68ch; }
p + p { margin-top: 0.9em; }

/* ---------- 4. 容器与区块 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(16px, 3.6vw, 44px);
}

.section { position: relative; padding-block: clamp(36px, 5.4vw, 72px); }
.section--tight { padding-block: clamp(22px, 3vw, 40px); }

.stack { display: flex; flex-direction: column; gap: clamp(20px, 3vw, 40px); }
.stack--offset > *:nth-child(even) { margin-inline-start: clamp(0px, 3.2vw, 56px); }
.stack--offset > *:nth-child(3n) { margin-inline-end: clamp(0px, 2vw, 28px); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 18px;
  margin-bottom: clamp(18px, 2.6vw, 30px);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--wb-ink);
}

.section-head__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--wb-orange);
  padding: 2px 8px;
  border: 2px solid var(--wb-red);
  background: rgba(217, 67, 47, 0.14);
}

.section-head__title {
  font-size: clamp(24px, 3.1vw, 40px);
  color: var(--wb-cream);
  letter-spacing: -0.02em;
}

.section-head__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--wb-line);
  margin-inline-start: auto;
}

/* ---------- 5. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 200;
  transform: translateY(-140%);
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  background: var(--wb-orange);
  color: var(--wb-brown);
  border: 2px solid var(--wb-brown);
  transition: transform 0.18s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 6. 侧边轨道 / 顶部栏 ---------- */
.site-rail {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--rail-w);
  z-index: 60;
  display: flex;
  background: linear-gradient(180deg, #0B1430 0%, #0F1A38 46%, #14203F 100%);
  border-right: 2px solid var(--wb-ink);
}

.site-rail::after {
  content: "";
  position: absolute;
  top: 0;
  right: -2px;
  width: 2px;
  height: 100%;
  background: repeating-linear-gradient(180deg, var(--wb-cyan) 0 6px, transparent 6px 18px);
  opacity: 0.4;
  pointer-events: none;
}

.rail-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  padding: 18px 0 20px;
}

/* 品牌 */
.rail-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  padding: 0 8px 16px;
  border-bottom: 2px solid var(--wb-ink);
}

.rail-brand__mark {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  line-height: 1.1;
  letter-spacing: 0.04em;
  color: var(--wb-cream);
}

.rail-brand__sub {
  font-size: 10px;
  line-height: 1.55;
  letter-spacing: 0.06em;
  text-align: center;
  color: var(--wb-mist);
  opacity: 0.72;
}

/* 移动端抽屉按钮 */
.rail-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  border: 2px solid var(--wb-ink);
  color: var(--wb-mist);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: background 0.16s var(--ease), color 0.16s var(--ease);
}
.rail-toggle:hover { background: rgba(139, 92, 246, 0.24); }

.rail-toggle__ico { display: flex; flex-direction: column; gap: 4px; width: 18px; }
.rail-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}
.rail-toggle__text { line-height: 1; }

/* 导航 */
.rail-nav {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 16px 0;
  scrollbar-width: thin;
}

.rail-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.rail-link {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 2px solid transparent;
  color: var(--wb-mist);
  transition: background 0.16s var(--ease), border-color 0.16s var(--ease), color 0.16s var(--ease);
}

.rail-link__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--wb-line);
  transition: color 0.16s var(--ease);
}

.rail-link__label {
  position: absolute;
  left: calc(100% + 14px);
  top: 50%;
  z-index: 5;
  transform: translateY(-50%) translateX(-8px);
  padding: 5px 11px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
  white-space: nowrap;
  color: var(--wb-brown);
  background: var(--wb-cream);
  border: 2px solid var(--wb-brown);
  box-shadow: 4px 4px 0 var(--wb-red);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.16s var(--ease), transform 0.16s var(--ease);
}

.rail-link__label::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 50%;
  width: 8px;
  height: 2px;
  background: var(--wb-red);
  transform: translateY(-50%);
}

.rail-link:hover,
.rail-link:focus-visible {
  border-color: var(--wb-violet);
  background: rgba(139, 92, 246, 0.22);
  color: var(--wb-cream);
}
.rail-link:hover .rail-link__idx,
.rail-link:focus-visible .rail-link__idx { color: var(--wb-cyan); }
.rail-link:hover .rail-link__label,
.rail-link:focus-visible .rail-link__label {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

.rail-link[aria-current="page"] {
  color: var(--wb-cream);
  border-color: var(--wb-cyan);
  background: rgba(47, 227, 208, 0.16);
  box-shadow: inset 3px 0 0 var(--wb-cyan);
}
.rail-link[aria-current="page"] .rail-link__idx { color: var(--wb-orange); }

/* 轨道底部 */
.rail-foot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 14px 8px 0;
  border-top: 2px solid var(--wb-ink);
}

.rail-version { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.rail-version__key {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--wb-line);
}
.rail-version__val {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--wb-cyan);
}

.rail-mail {
  display: block;
  width: 100%;
  padding: 8px 4px;
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.3;
  color: var(--wb-mist);
  border: 2px solid var(--wb-ink);
  transition: background 0.16s var(--ease), color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.rail-mail:hover {
  background: var(--wb-orange);
  border-color: var(--wb-orange);
  color: var(--wb-brown);
}

/* ---------- 7. 滚动进度条 ---------- */
.wb-meter {
  position: fixed;
  top: 0;
  left: var(--rail-w);
  right: 0;
  height: 3px;
  z-index: 90;
  pointer-events: none;
  background: rgba(85, 97, 143, 0.25);
}

.wb-meter__fill {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--wb-cyan) 0%, var(--wb-violet) 55%, var(--wb-orange) 100%);
  transition: transform 0.09s linear;
}

/* ---------- 8. 面板 ---------- */
.panel {
  position: relative;
  padding: clamp(22px, 3.2vw, 42px);
  color: var(--wb-brown);
  background: var(--wb-cream);
  border: 2px solid var(--wb-brown);
  box-shadow: var(--hard-paper);
}

.panel + .panel { margin-top: 0; }

.panel--dark {
  color: var(--wb-mist);
  background: var(--wb-ink);
  border-color: var(--wb-violet);
  box-shadow: var(--hard);
}

.panel--flat { box-shadow: none; }

.panel__stamp {
  position: absolute;
  top: -2px;
  left: -2px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: #FFFFFF;
  background: var(--wb-red);
  border: 2px solid var(--wb-brown);
}

.panel__title {
  font-size: clamp(21px, 2.5vw, 31px);
  color: inherit;
  margin-bottom: 0.5em;
}

.panel--dark .panel__title { color: var(--wb-cream); }

.vert-note {
  position: absolute;
  right: 8px;
  top: clamp(20px, 3vw, 42px);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--wb-line);
  pointer-events: none;
}

/* ---------- 9. 结论数字 ---------- */
.stat { display: flex; flex-direction: column; gap: 6px; }

.stat__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--wb-cyan);
  font-variant-numeric: tabular-nums;
}
.stat__num--orange { color: var(--wb-orange); }
.stat__num--violet { color: var(--wb-violet); }
.stat__num--cream { color: var(--wb-brown); }
.panel--dark .stat__num--cream { color: var(--wb-cream); }

.stat__unit {
  font-family: var(--font-mono);
  font-size: 0.4em;
  font-weight: 500;
  margin-inline-start: 0.1em;
  letter-spacing: 0.06em;
  color: currentColor;
  opacity: 0.7;
}

.stat__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--wb-line);
}
.panel .stat__label { color: var(--wb-brown); opacity: 0.68; }

/* ---------- 10. 网格 ---------- */
.grid { display: grid; gap: var(--gap, 20px); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

/* ---------- 11. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--wb-mist);
  border: 1px solid var(--wb-violet);
  background: rgba(139, 92, 246, 0.16);
}
.tag--cyan { color: var(--wb-cyan); border-color: var(--wb-cyan); background: rgba(47, 227, 208, 0.12); }
.tag--orange { color: var(--wb-orange); border-color: var(--wb-orange); background: rgba(255, 138, 61, 0.12); }

/* ---------- 12. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.2;
  color: var(--wb-cream);
  background: transparent;
  border: 2px solid var(--wb-cream);
  box-shadow: 4px 4px 0 var(--wb-indigo-deep);
  transition: transform 0.16s var(--ease), box-shadow 0.16s var(--ease), background 0.16s var(--ease), color 0.16s var(--ease);
}
.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--wb-indigo-deep);
}

.btn--primary {
  color: var(--wb-brown);
  background: var(--wb-orange);
  border-color: var(--wb-brown);
  box-shadow: 4px 4px 0 var(--wb-indigo-deep);
}
.btn--primary:hover { background: #FFA05E; }

.btn--cyan {
  color: var(--wb-brown);
  background: var(--wb-cyan);
  border-color: var(--wb-brown);
}

.btn--ghost { color: var(--wb-mist); border-color: var(--wb-line); box-shadow: none; }
.btn--ghost:hover { color: var(--wb-cream); border-color: var(--wb-cyan); }

.btn--sm { padding: 9px 16px; font-size: 13px; box-shadow: 3px 3px 0 var(--wb-indigo-deep); }

/* ---------- 13. 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--wb-line);
}
.crumbs a { transition: color 0.16s var(--ease); }
.crumbs a:hover { color: var(--wb-cyan); }
.crumbs__sep { opacity: 0.55; }
.crumbs [aria-current="page"] { color: var(--wb-mist); }

/* ---------- 14. 数据表 ---------- */
.data-table { font-size: 15px; }
.data-table th,
.data-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(85, 97, 143, 0.5);
  vertical-align: top;
}
.data-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--wb-mist);
  background: var(--wb-ink);
  border-bottom: 2px solid var(--wb-violet);
}
.data-table tbody tr { transition: background 0.16s var(--ease); }
.data-table tbody tr:hover { background: rgba(47, 227, 208, 0.1); }
.data-table tbody tr:hover td:first-child { box-shadow: inset 3px 0 0 var(--wb-cyan); }
.data-table .num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--wb-orange);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.table-scroll {
  overflow-x: auto;
  border: 2px solid var(--wb-ink);
  background: rgba(11, 19, 48, 0.6);
}
.panel .table-scroll { border-color: var(--wb-brown); background: transparent; }
.panel .data-table thead th { color: var(--wb-mist); }

/* ---------- 15. 分段控件 / 标签页 ---------- */
.segmented {
  display: inline-flex;
  flex-wrap: wrap;
  border: 2px solid var(--wb-violet);
  background: rgba(139, 92, 246, 0.1);
  box-shadow: 4px 4px 0 var(--wb-indigo-deep);
}

.segmented__btn {
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--wb-mist);
  border-right: 2px solid rgba(139, 92, 246, 0.5);
  transition: background 0.16s var(--ease), color 0.16s var(--ease);
}
.segmented__btn:last-child { border-right: 0; }
.segmented__btn:hover { background: rgba(139, 92, 246, 0.35); color: #FFFFFF; }
.segmented__btn[aria-selected="true"] {
  background: var(--wb-violet);
  color: #FFFFFF;
}

[data-panel][hidden] { display: none; }

/* ---------- 16. 图片容器 ---------- */
.frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 2px solid var(--wb-ink);
  background: #0B1330;
  box-shadow: 6px 6px 0 var(--wb-indigo-deep);
}
.frame > img,
.frame > svg,
.frame > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.frame--16x9 { aspect-ratio: 16 / 9; }
.frame--4x3 { aspect-ratio: 4 / 3; }
.frame--1x1 { aspect-ratio: 1 / 1; }
.frame--21x9 { aspect-ratio: 21 / 9; }
.frame--auto { aspect-ratio: auto; }

.frame__slot {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 160px;
  height: 100%;
  padding: 20px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--wb-line);
  background-image: repeating-linear-gradient(135deg, rgba(85, 97, 143, 0.2) 0 8px, transparent 8px 16px);
}

.frame__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--wb-cyan);
  background: rgba(15, 26, 56, 0.9);
  border-top: 2px solid var(--wb-cyan);
  border-right: 2px solid var(--wb-cyan);
}

/* ---------- 17. 页脚 ---------- */
.site-foot {
  position: relative;
  z-index: 1;
  margin-top: clamp(40px, 6vw, 96px);
  padding: clamp(32px, 4.6vw, 64px) 0 26px;
  color: var(--wb-mist);
  background: linear-gradient(180deg, var(--wb-indigo) 0%, var(--wb-indigo-deep) 58%, #04091A 100%);
  border-top: 2px solid var(--wb-ink);
}

.foot-wrap {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.6fr;
  gap: clamp(24px, 3.4vw, 48px);
  align-items: start;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(16px, 3.6vw, 44px);
}

.foot-brand__mark {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--wb-cream);
}

.foot-brand__desc {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--wb-line);
  max-width: 34ch;
}

.foot-brand__meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 4px 10px;
  border: 2px solid var(--wb-ink);
  background: rgba(47, 227, 208, 0.08);
}
.foot-brand__key {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--wb-line);
}
.foot-brand__ver {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--wb-cyan);
}

.foot-col__title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--wb-orange);
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 2px solid var(--wb-ink);
}

.foot-list { display: flex; flex-direction: column; gap: 9px; }
.foot-list a {
  font-size: 14px;
  color: var(--wb-mist);
  transition: color 0.16s var(--ease), padding-inline-start 0.16s var(--ease);
}
.foot-list a:hover {
  color: var(--wb-cyan);
  padding-inline-start: 6px;
}

.foot-contact { display: flex; flex-direction: column; gap: 12px; }
.foot-contact li { display: flex; flex-direction: column; gap: 2px; }
.foot-contact__key {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--wb-line);
}
.foot-contact__val {
  font-size: 14px;
  line-height: 1.6;
  color: var(--wb-cream);
  word-break: break-word;
}

.foot-note {
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--wb-line);
  max-width: 40ch;
}

.foot-col--contact .btn { margin-top: 16px; }

.foot-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
  width: 100%;
  max-width: var(--wrap);
  margin: clamp(28px, 3.4vw, 48px) auto 0;
  padding: 18px clamp(16px, 3.6vw, 44px) 0;
  border-top: 1px solid rgba(85, 97, 143, 0.45);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--wb-line);
}

/* ---------- 18. 进场动效 ---------- */
.wb-anim [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.26s var(--ease), transform 0.26s var(--ease);
  will-change: opacity, transform;
}
.wb-anim [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 19. 平板 ---------- */
@media (max-width: 1080px) {
  .foot-wrap { grid-template-columns: 1.4fr 1fr 1fr; }
  .foot-col--contact { grid-column: span 3; }
  .foot-col--contact .foot-contact { flex-direction: row; flex-wrap: wrap; gap: 20px 40px; }
}

@media (max-width: 900px) {
  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .span-3, .span-4 { grid-column: span 3; }
  .span-5, .span-6, .span-7 { grid-column: span 6; }
  .span-8, .span-9 { grid-column: span 6; }
  :root { --gap: 16px; }
}

/* ---------- 20. 移动端：轨道收为右上角抽屉 ---------- */
@media (max-width: 860px) {
  :root { --rail-w: 0px; --rail-top-h: 60px; }

  body { padding-left: 0; padding-top: var(--rail-top-h); }

  .site-rail {
    inset: 0 0 auto 0;
    width: 100%;
    height: var(--rail-top-h);
    border-right: 0;
    border-bottom: 2px solid var(--wb-ink);
    background: #0B1430;
  }
  .site-rail::after { display: none; }

  .rail-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 clamp(12px, 3.4vw, 20px);
  }

  .rail-brand {
    flex-direction: row;
    align-items: baseline;
    gap: 8px;
    padding: 0;
    border-bottom: 0;
  }
  .rail-brand__mark { font-size: 19px; }
  .rail-brand__sub {
    font-size: 9px;
    letter-spacing: 0.14em;
    opacity: 0.6;
    max-width: none;
  }

  .rail-toggle { display: inline-flex; }

  .rail-nav,
  .rail-foot {
    position: fixed;
    right: 0;
    width: min(86vw, 340px);
    background: #0A1330;
    border-left: 2px solid var(--wb-ink);
    transform: translateX(103%);
    visibility: hidden;
    transition: transform 0.24s var(--ease), visibility 0.24s var(--ease);
  }

  .rail-nav {
    top: var(--rail-top-h);
    height: calc(100vh - var(--rail-top-h));
    height: calc(100dvh - var(--rail-top-h));
    padding: 22px 18px 170px;
    overflow-y: auto;
    border-bottom: 0;
  }

  .rail-foot {
    bottom: 0;
    height: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 16px 18px 22px;
    border-top: 2px solid var(--wb-ink);
  }

  .site-rail[data-open] .rail-nav,
  .site-rail[data-open] .rail-foot {
    transform: translateX(0);
    visibility: visible;
  }

  .site-rail[data-open] .rail-toggle__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .site-rail[data-open] .rail-toggle__bar:nth-child(2) { opacity: 0; }
  .site-rail[data-open] .rail-toggle__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .rail-list { align-items: stretch; gap: 0; }

  .rail-link {
    width: 100%;
    height: auto;
    min-height: 52px;
    justify-content: flex-start;
    gap: 14px;
    padding: 0 12px;
    border: 0;
    border-bottom: 1px solid rgba(85, 97, 143, 0.4);
  }

  .rail-link__idx {
    flex: 0 0 auto;
    font-size: 12px;
    color: var(--wb-line);
  }

  .rail-link__label {
    position: static;
    transform: none;
    opacity: 1;
    padding: 0;
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.03em;
    color: inherit;
    background: none;
    border: 0;
    box-shadow: none;
    pointer-events: auto;
  }
  .rail-link__label::before { display: none; }

  .rail-link:hover .rail-link__label,
  .rail-link:focus-visible .rail-link__label { transform: none; }

  .rail-link[aria-current="page"] { box-shadow: inset 3px 0 0 var(--wb-cyan); }
  .rail-link[aria-current="page"] .rail-link__label { color: var(--wb-cyan); }

  .rail-version { flex-direction: row; align-items: baseline; gap: 8px; }
  .rail-mail { text-align: center; padding: 10px 4px; font-size: 12px; }

  .wb-meter { left: 0; }
}

/* ---------- 21. 手机 ---------- */
@media (max-width: 640px) {
  body { font-size: 16px; }

  .grid--12 { grid-template-columns: minmax(0, 1fr); }
  .span-3, .span-4, .span-5, .span-6, .span-7, .span-8, .span-9, .span-12 { grid-column: span 1; }

  .stack--offset > *:nth-child(even) { margin-inline-start: 0; }
  .stack--offset > *:nth-child(3n) { margin-inline-end: 0; }

  .vert-note { display: none; }

  .foot-wrap { grid-template-columns: minmax(0, 1fr); }
  .foot-col--contact { grid-column: span 1; }
  .foot-col--contact .foot-contact { flex-direction: column; gap: 12px; }
  .foot-base { flex-direction: column; }
}

/* ---------- 22. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .wb-anim [data-reveal] { opacity: 1; transform: none; }
  .wb-meter__fill { transition: none; }
  .btn:hover { transform: none; }
}