/* ===========================================================
   东升国际看台 · /assets/site.css
   蓝图网格 + 12° 斜切 + 珠宝色分区 + 纸张叠层
   =========================================================== */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 150px; }
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
button { background: none; border: 0; }
[hidden] { display: none !important; }

/* ---------- 2. Tokens ---------- */
:root {
  --ochre: #B5432C;
  --ochre-deep: #7E2B1C;
  --cobalt: #133C6B;
  --indigo: #241F45;
  --wine: #5E1F2A;
  --sky: #7FB2D9;
  --lime: #A8FF3E;
  --silver: #C7CCD1;
  --paper: #F4EFE7;
  --ink: #14161A;
  --sand: #E7DED2;

  --fs-12: 0.75rem;
  --fs-14: 0.875rem;
  --fs-16: 1rem;
  --fs-19: 1.1875rem;
  --fs-24: 1.5rem;
  --fs-32: 2rem;
  --fs-44: 2.75rem;
  --fs-64: 4rem;

  --font-display: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-editorial: "Source Han Serif SC", "Noto Serif SC", "Songti SC", Georgia, serif;
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, "Courier New", monospace;

  --grid: 24px;
  --grid-tight: 12px;
  --line: rgba(199, 204, 209, 0.38);
  --line-dark: rgba(199, 204, 209, 0.14);

  --ease: cubic-bezier(.2, .7, .3, 1);
  --dur: 200ms;

  --header-h: 88px;
  --header-h-compact: 64px;
  --strip-h: 46px;
  --header-total: 134px;
  --wrap: 1280px;
  --gutter: 24px;

  --shadow-paper: 0 2px 0 rgba(20, 22, 26, .08), 6px 6px 0 rgba(36, 31, 69, .10);
  --shadow-paper-hover: 0 4px 0 rgba(20, 22, 26, .10), 9px 9px 0 rgba(36, 31, 69, .16);
}

/* ---------- 3. Base / 中文排版 ---------- */
body {
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.75;
  letter-spacing: .01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { line-height: 1.25; letter-spacing: -.005em; }
h1 { font-size: var(--fs-32); }
h2 { font-size: var(--fs-24); }
h3 { font-size: var(--fs-19); }
p { text-wrap: pretty; }

.display-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 6vw, 5rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  transform: skewX(-6deg);
  transform-origin: left bottom;
}
.editorial {
  font-family: var(--font-editorial);
  font-weight: 500;
  font-size: 1.25rem;
  line-height: 1.6;
  letter-spacing: .01em;
}
.mono, .data-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
  border-radius: 0;
}

/* ---------- 4. Utilities & 基础组件 ---------- */
.wrap {
  width: min(100% - (var(--gutter) * 2), var(--wrap));
  margin-inline: auto;
}

.page-offset { padding-top: var(--header-total); }

.bp { position: relative; isolation: isolate; }
.bp::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line) 0 .5px, transparent .5px),
    linear-gradient(to bottom, var(--line) 0 .5px, transparent .5px);
  background-size: var(--grid) var(--grid);
}
.bp--tight::before { background-size: var(--grid-tight) var(--grid-tight); }
.bp > * { position: relative; z-index: 1; }

.section { padding-block: clamp(48px, 7vw, 96px); }
.section--sand { background-color: var(--sand); }
.section--cobalt { background-color: var(--cobalt); color: var(--paper); }
.section--dark { background-color: var(--indigo); color: var(--paper); }
.section--ink { background-color: var(--ink); color: var(--paper); }
.section--ochre { background-color: var(--ochre); color: var(--paper); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 16px;
  padding-bottom: 12px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--line);
}
.section-head__index {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--ochre);
}
.section-head__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-24);
  letter-spacing: -.01em;
}
.section--dark .section-head__title,
.section--cobalt .section-head__title { color: var(--paper); }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.prose {
  max-width: 44rem;
  font-size: var(--fs-16);
  line-height: 1.75;
}
.prose > * + * { margin-top: 1em; }
.prose h2 { margin-top: 1.8em; }

.aside-note {
  border-left: 2px solid var(--lime);
  padding: 4px 0 4px 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.8;
  color: #4C525A;
}
.section--dark .aside-note,
.section--cobalt .aside-note { color: var(--silver); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid var(--ink);
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: .02em;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn--lime { background-color: var(--lime); border-color: var(--ink); color: var(--ink); }
.btn--lime:hover { background-color: var(--paper); }
.btn--solid { background-color: var(--cobalt); border-color: var(--cobalt); color: var(--paper); }
.btn--solid:hover { background-color: var(--indigo); border-color: var(--indigo); }
.btn--ochre { background-color: var(--ochre); border-color: var(--ochre-deep); color: var(--paper); }
.btn--ochre:hover { background-color: var(--ochre-deep); }
.btn--ghost { background-color: transparent; border-color: var(--silver); color: inherit; }
.btn--ghost:hover { border-color: var(--lime); color: var(--lime); }

/* 印刷标签 */
.label-tag {
  display: inline-block;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.5;
  letter-spacing: .06em;
  border: 1px solid transparent;
  border-radius: 0;
}
.label-tag--wine { background-color: var(--wine); color: var(--paper); }
.label-tag--cobalt { background-color: var(--cobalt); color: var(--paper); }
.label-tag--ochre { background-color: var(--ochre); color: var(--paper); }
.label-tag--lime { background-color: transparent; border-color: var(--lime); color: var(--ink); }
.section--dark .label-tag--lime,
.section--cobalt .label-tag--lime { color: var(--lime); }

/* 纸层卡片 */
.paper-card {
  position: relative;
  padding: 24px;
  background-color: var(--paper);
  border: 1px solid var(--silver);
  box-shadow: var(--shadow-paper);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}
.paper-card:hover {
  transform: translateY(-2px);
  border-color: var(--lime);
  box-shadow: var(--shadow-paper-hover);
}

/* 图片容器（页面阶段放占位图） */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background-color: var(--sand);
  border: 1px solid var(--silver);
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 18px;
  height: 18px;
  background-color: var(--lime);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  pointer-events: none;
}
.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame__caption {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: #4C525A;
}

/* 面包屑 */
.breadcrumbs {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .04em;
  color: #4C525A;
}
.breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumbs li { display: flex; align-items: center; gap: 8px; }
.breadcrumbs li + li::before { content: "/"; color: var(--silver); }
.breadcrumbs a { color: var(--cobalt); }
.breadcrumbs a:hover { color: var(--ochre); }

/* 链接微交互 */
.link-underline {
  position: relative;
  display: inline-block;
  color: var(--cobalt);
  transition: color var(--dur) var(--ease);
}
.link-underline::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background-color: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}
.link-underline:hover { color: var(--ochre); }
.link-underline:hover::after { transform: scaleX(1); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  color: var(--cobalt);
  transition: color var(--dur) var(--ease);
}
.link-arrow::before {
  content: "";
  width: 10px;
  height: 10px;
  flex: none;
  background-color: var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}
.link-arrow::after {
  content: "→";
  transition: transform var(--dur) var(--ease);
}
.link-arrow:hover { color: var(--ochre); }
.link-arrow:hover::after { transform: translateX(4px); }
.section--dark .link-arrow,
.section--cobalt .link-arrow,
.site-footer .link-arrow { color: var(--paper); }

/* ---------- 5. 页头 ---------- */
.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -80px;
  z-index: 200;
  padding: 10px 16px;
  background-color: var(--lime);
  color: var(--ink);
  border: 1px solid var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 16px; }

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  color: var(--paper);
}

.header-bar {
  position: relative;
  height: var(--header-h);
  background-color: transparent;
  transition: height var(--dur) var(--ease), background-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}
.header-bar__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 100%;
}

.site-header[data-state="solid"] .header-bar {
  height: var(--header-h-compact);
  background-color: var(--cobalt);
  box-shadow: 0 1px 0 rgba(199, 204, 209, .35);
}
body[data-static-header] .site-header .header-bar {
  background-color: var(--cobalt);
  box-shadow: 0 1px 0 rgba(199, 204, 209, .35);
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: none;
  min-width: 0;
  color: inherit;
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex: none;
  background-color: var(--ochre);
  border: 1px solid var(--ochre-deep);
  color: var(--paper);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-16);
  letter-spacing: .02em;
  transform: skewX(-6deg);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.3; min-width: 0; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-19);
  letter-spacing: .01em;
  white-space: nowrap;
}
.brand__tag {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  opacity: .74;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 主导航 */
.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
  min-width: 0;
}
.nav-list { display: flex; align-items: center; gap: 2px; }
.nav-list__item { display: block; }
.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 12px;
  font-size: var(--fs-14);
  letter-spacing: .02em;
  color: inherit;
  white-space: nowrap;
  transition: color var(--dur) var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 1px;
  height: 2px;
  background-color: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}
.nav-link:hover::after,
.nav-link:focus-visible::after { transform: scaleX(1); }
.nav-link:hover { color: var(--lime); }
.nav-link[aria-current="page"] { color: var(--lime); }
.nav-link[aria-current="page"]::after { transform: scaleX(1); }

/* 右侧动作区 */
.header-actions { display: flex; align-items: center; gap: 12px; flex: none; }
.netbtn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  background-color: transparent;
  border: 1px solid var(--lime);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: .02em;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.netbtn__label { display: inline-block; }
.netbtn:hover,
.netbtn[aria-expanded="true"] { background-color: var(--lime); color: var(--ink); }

.navtoggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--silver);
  color: inherit;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.navtoggle:hover { border-color: var(--lime); color: var(--lime); }
.navtoggle__bars { display: flex; flex-direction: column; gap: 4px; width: 18px; }
.navtoggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  background-color: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.navtoggle__text { display: inline-block; }
.navtoggle[aria-expanded="true"] .navtoggle__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.navtoggle[aria-expanded="true"] .navtoggle__bar:nth-child(2) { opacity: 0; }
.navtoggle[aria-expanded="true"] .navtoggle__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* 省份索引条 */
.province-strip {
  background-color: rgba(36, 31, 69, .82);
  border-top: 1px solid rgba(199, 204, 209, .18);
  border-bottom: 1px solid rgba(199, 204, 209, .26);
  transition: background-color var(--dur) var(--ease);
}
.site-header[data-state="solid"] .province-strip { background-color: var(--indigo); }
.province-strip__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  height: var(--strip-h);
}
.province-strip__label {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--lime);
}
.province-track {
  display: flex;
  gap: 8px;
  flex: 1 1 auto;
  min-width: 0;
  padding: 4px 24px 4px 0;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: rgba(199, 204, 209, .45) transparent;
}
.province-track::-webkit-scrollbar { height: 6px; }
.province-track::-webkit-scrollbar-track { background: transparent; }
.province-track::-webkit-scrollbar-thumb { background-color: rgba(199, 204, 209, .45); }
.province-chip {
  scroll-snap-align: start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  white-space: nowrap;
  background-color: transparent;
  border: 1px solid rgba(199, 204, 209, .45);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}
.province-chip:hover { border-color: var(--lime); color: var(--lime); }
.province-chip[aria-pressed="true"] {
  background-color: var(--ochre);
  border-color: var(--ochre-deep);
  color: #fff;
}
.province-chip__count { color: var(--lime); font-variant-numeric: tabular-nums; }
.province-chip[aria-pressed="true"] .province-chip__count { color: #fff; }
.province-readout {
  flex: none;
  max-width: 300px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--sky);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 查网点面板 */
.network-panel {
  display: none;
  background-color: var(--indigo);
  color: var(--paper);
  border-bottom: 1px solid var(--wine);
  box-shadow: 0 22px 40px rgba(20, 22, 26, .38);
}
.network-panel[data-open] { display: block; }
.network-panel__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 24px 40px;
  padding-block: 24px 28px;
}
.network-panel__head { min-width: 0; }
.network-panel__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-19);
  letter-spacing: -.01em;
}
.network-panel__hint {
  margin-top: 6px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--sky);
}
.field { margin-top: 16px; }
.field__label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--lime);
}
.field__input {
  width: 100%;
  padding: 10px 12px;
  background-color: rgba(244, 239, 231, .06);
  border: 1px solid rgba(199, 204, 209, .45);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: var(--fs-16);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.field__input::placeholder { color: rgba(199, 204, 209, .6); }
.field__input:focus { border-color: var(--lime); background-color: rgba(244, 239, 231, .1); }
.network-status {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--sky);
}
.network-results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-content: start;
  gap: 8px;
  max-height: 232px;
  overflow-y: auto;
  padding-right: 4px;
}
.network-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  text-align: left;
  background-color: rgba(244, 239, 231, .05);
  border: 1px solid rgba(199, 204, 209, .25);
  color: var(--paper);
  font-size: var(--fs-14);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.network-item:hover { border-color: var(--lime); background-color: rgba(168, 255, 62, .12); }
.network-item__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--sky);
  white-space: nowrap;
}
.network-links { grid-column: 1 / -1; }

/* ---------- 6. 页脚 ---------- */
.site-footer {
  position: relative;
  padding: 56px 0 32px;
  background-color: var(--indigo);
  color: var(--paper);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line-dark) 0 .5px, transparent .5px),
    linear-gradient(to bottom, var(--line-dark) 0 .5px, transparent .5px);
  background-size: var(--grid) var(--grid);
}
.site-footer > .wrap { position: relative; z-index: 1; }

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(199, 204, 209, .22);
}
.footer-brand { min-width: 0; }
.footer-mark {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background-color: var(--ochre);
  border: 1px solid var(--ochre-deep);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-14);
  transform: skewX(-6deg);
}
.footer-sign {
  margin-top: 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-19);
}
.footer-meta {
  margin-top: 6px;
  max-width: 34em;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.8;
  color: var(--silver);
}
.footer-col { min-width: 0; }
.footer-col__title {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-weight: 400;
  letter-spacing: .12em;
  color: var(--lime);
}
.footer-list { display: flex; flex-direction: column; gap: 8px; }
.footer-link {
  display: inline-block;
  font-size: var(--fs-14);
  opacity: .86;
  transition: color var(--dur) var(--ease), opacity var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.footer-link:hover { color: var(--lime); opacity: 1; transform: translateX(3px); }

.footer-contact {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px 24px;
  padding: 28px 0 8px;
}
.footer-contact__item {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  line-height: 1.7;
  word-break: break-word;
}
.footer-contact__key {
  display: block;
  margin-bottom: 4px;
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--lime);
}

.footer-rule { position: relative; height: 30px; }
.footer-rule::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 132px;
  height: 3px;
  background-color: var(--lime);
  transform: rotate(-12deg);
  transform-origin: left center;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 8px;
  border-top: 1px solid rgba(199, 204, 209, .18);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--silver);
}
.footer-icp { color: var(--silver); }
.footer-note { color: rgba(199, 204, 209, .78); }

/* ---------- 7. 响应式 ---------- */
@media (max-width: 1200px) {
  .province-readout { display: none; }
}

@media (max-width: 1023px) {
  :root {
    --header-h: 72px;
    --header-h-compact: 72px;
    --strip-h: 40px;
    --header-total: 112px;
    --gutter: 18px;
  }

  .navtoggle { display: inline-flex; }
  .brand__tag { display: none; }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    z-index: 80;
    display: block;
    justify-content: flex-start;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    padding: 8px var(--gutter) 28px;
    background-color: var(--indigo);
    border-top: 1px solid var(--wine);
    border-bottom: 1px solid var(--wine);
    box-shadow: 0 26px 40px rgba(20, 22, 26, .42);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
                visibility var(--dur) linear;
  }
  .site-nav[data-open] {
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-link {
    display: block;
    padding: 15px 4px;
    font-size: var(--fs-16);
    border-bottom: 1px solid rgba(199, 204, 209, .18);
  }
  .nav-link::after { left: 4px; right: auto; width: 34px; bottom: 9px; }

  .network-panel__inner { grid-template-columns: minmax(0, 1fr); }
  .network-results { max-height: 260px; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-contact { grid-template-columns: minmax(0, 1fr); gap: 14px; }
}

@media (max-width: 900px) {
  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8 { grid-column: span 12; }
}

@media (max-width: 640px) {
  :root { --fs-64: 2.75rem; }
  .header-bar__inner { gap: 12px; }
  .brand__mark { width: 38px; height: 38px; font-size: var(--fs-14); }
  .brand__name { font-size: var(--fs-16); }
  .netbtn { padding: 8px 12px; }
  .navtoggle__text { display: none; }
  .network-results { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .section-head__title { font-size: var(--fs-19); }
}

/* ---------- 8. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-property: color, background-color, border-color, opacity !important;
    transition-duration: 120ms !important;
    scroll-behavior: auto !important;
  }
  .btn:hover,
  .paper-card:hover,
  .footer-link:hover { transform: none; }
  .site-nav { transform: none; }
}