/* =========================================================
   财神棋牌 · /assets/site.css
   共享层：reset、变量、中文排版、页头、页脚、基础组件
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body, h1, h2, h3, h4, h5, p, ul, ol, dl, dd, figure, blockquote {
  margin: 0;
}
ul, ol { padding: 0; list-style: none; }
img, svg, picture, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
p, li, dd, dt { overflow-wrap: break-word; }
[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  --red: #B5232E;
  --red-deep: #8E1A23;
  --gold: #D4A03C;
  --gold-light: #F0D9A4;
  --green: #1F4A3A;
  --green-deep: #16362B;
  --brown: #3A2A22;
  --paper: #F7F1E3;
  --paper-lift: #FDF9EF;
  --warm-gray: #E8E0D2;
  --ink: #1C1917;
  --mist: #C9B27A;
  --tea: #6B4A36;

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, "SimSun", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell: 1200px;
  --gutter: clamp(16px, 4vw, 44px);
  --header-h: 74px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --line: 1px solid var(--mist);
  --shadow-card: 0 1px 0 rgba(255, 255, 255, .75) inset, 0 18px 36px -32px rgba(58, 42, 34, .9);
  --shadow-lift: 0 26px 52px -36px rgba(58, 42, 34, .95);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(120% 90% at 8% -12%, rgba(212, 160, 60, .18), rgba(212, 160, 60, 0) 62%),
    radial-gradient(90% 70% at 102% -6%, rgba(181, 35, 46, .12), rgba(181, 35, 46, 0) 58%),
    linear-gradient(180deg, #FCF7EC 0%, #F7F1E3 42%, #F1E9D8 100%);
  background-repeat: no-repeat;
  background-attachment: scroll;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--brown);
  line-height: 1.18;
  letter-spacing: .02em;
}
h1 { font-size: clamp(32px, 5.4vw, 64px); }
h2 { font-size: clamp(24px, 3.4vw, 40px); }
h3 { font-size: clamp(18px, 2.1vw, 28px); }
h4 { font-size: clamp(16px, 1.5vw, 20px); }

strong, b { font-weight: 700; color: var(--brown); }
small { font-size: 12px; }

[id] { scroll-margin-top: calc(var(--header-h) + 32px); }

::selection { background: var(--gold-light); color: var(--brown); }

:where(a, button, [tabindex]):focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 4. 工具类 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--red);
  color: #FFF6E8;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  box-shadow: 0 14px 28px -18px rgba(0, 0, 0, .8);
  transform: translateY(-180%);
  transition: transform .18s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible { transform: translateY(0); }

/* ---------- 5. 通用按钮 / 标签 / 卡片 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  line-height: 1.3;
  transition: transform .18s var(--ease), background-color .18s var(--ease),
              border-color .18s var(--ease), color .18s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn--primary {
  background: linear-gradient(160deg, #C42B36, var(--red) 62%, var(--red-deep));
  color: #FFF6E8;
  box-shadow: 0 14px 26px -20px rgba(181, 35, 46, .95);
}
.btn--gold {
  background: linear-gradient(160deg, #E7BE63, var(--gold));
  color: #33251C;
  border-color: #C08F2C;
}
.btn--ghost {
  border-color: var(--brown);
  color: var(--brown);
  background: rgba(255, 255, 255, .45);
}
.btn--ghost:hover { border-color: var(--red); color: var(--red); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--mist);
  background: var(--warm-gray);
  color: var(--brown);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  line-height: 1.6;
}
.tag--red { background: rgba(181, 35, 46, .1); border-color: rgba(181, 35, 46, .35); color: var(--red); }
.tag--gold { background: var(--gold-light); border-color: var(--gold); color: #4A3418; }
.tag--green { background: rgba(31, 74, 58, .1); border-color: rgba(31, 74, 58, .35); color: var(--green); }

.card {
  position: relative;
  padding: 20px;
  border-radius: 12px;
  border: var(--line);
  background: var(--paper-lift);
  box-shadow: var(--shadow-card);
  transition: transform .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--gold);
  box-shadow: var(--shadow-lift);
}
.card__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--tea);
}
.card__title {
  margin-top: 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.35;
  color: var(--brown);
}
.card__text {
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--tea);
}

/* ---------- 6. 布局骨架 / 章节 / 正文 ---------- */
.page { width: 100%; }
.prose {
  max-width: 72ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
}
.prose > * + * { margin-top: 1em; }
.prose h2 { margin-top: 1.8em; }
.prose h3 { margin-top: 1.5em; }
.prose ul, .prose ol { padding-left: 1.2em; list-style: disc; }
.prose ol { list-style: decimal; }

.section { padding-block: clamp(36px, 5.5vw, 76px); }

.band {
  background: linear-gradient(180deg, var(--warm-gray), #F1E9D8);
  border-block: var(--line);
}
.band__inner { padding-block: clamp(28px, 4vw, 56px); }

.grid { display: grid; gap: clamp(16px, 2.4vw, 28px); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }

/* ---------- 7. 面包屑 ---------- */
.breadcrumbs {
  padding-block: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--tea);
}
.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.breadcrumbs__item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumbs__item::after { content: "/"; color: var(--mist); }
.breadcrumbs__item:last-child::after { content: ""; }
.breadcrumbs__link {
  color: var(--tea);
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.breadcrumbs__link:hover { color: var(--red); border-bottom-color: var(--gold); }
.breadcrumbs__current { color: var(--brown); font-weight: 700; }

/* ---------- 8. 响应式图片容器 ---------- */
.media {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  border: var(--line);
  background: linear-gradient(150deg, var(--warm-gray), #F3ECDD);
  box-shadow: var(--shadow-card);
}
.media > img,
.media > picture,
.media > svg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media__fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--tea);
}
.media__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--tea);
}

/* ---------- 9. 主题筛选（页面可选挂接） ---------- */
.filter { width: 100%; }
.filter__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--mist);
}
.filter__btn {
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid var(--mist);
  background: rgba(255, 255, 255, .55);
  color: var(--brown);
  font-size: 13px;
  letter-spacing: .05em;
  transition: transform .18s var(--ease), background-color .18s var(--ease),
              border-color .18s var(--ease), color .18s var(--ease);
}
.filter__btn:hover { border-color: var(--gold); transform: translateY(-1px); }
.filter__btn[aria-pressed="true"] {
  background: linear-gradient(160deg, #C42B36, var(--red) 65%, var(--red-deep));
  border-color: var(--red-deep);
  color: #FFF6E8;
  font-weight: 700;
  box-shadow: 0 12px 22px -18px rgba(181, 35, 46, .95);
}
.filter__status {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--tea);
}
.filter__list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
}
.filter__item {
  padding: 16px 18px;
  border-radius: 10px;
  border: var(--line);
  background: var(--paper-lift);
  box-shadow: var(--shadow-card);
  transition: transform .18s var(--ease), border-color .18s var(--ease);
}
.filter__item:hover { transform: translateY(-2px); border-color: var(--gold); }

/* ---------- 10. 顶部坐标条 ---------- */
.rail {
  background: linear-gradient(90deg, var(--green-deep), var(--green) 58%, #245340);
  border-bottom: 1px solid rgba(201, 178, 122, .35);
  color: var(--gold-light);
}
.rail__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 34px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
}
.rail__coord {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gold-light);
}
.rail__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(212, 160, 60, .22);
}
.rail__mono { font-variant-numeric: tabular-nums; }
.rail__note {
  margin-inline-start: auto;
  color: rgba(240, 217, 164, .72);
  letter-spacing: .04em;
}
.rail__link {
  color: var(--gold-light);
  border-bottom: 1px solid rgba(240, 217, 164, .4);
  padding-bottom: 1px;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.rail__link:hover { color: #FFFFFF; border-bottom-color: var(--gold); }

/* ---------- 11. 刊头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(253, 249, 239, .97), rgba(247, 241, 227, .95));
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--mist);
  box-shadow: 0 16px 34px -34px rgba(58, 42, 34, .95);
}
.site-header::after {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--red) 0%, var(--red) 18%, var(--gold) 18%, var(--gold) 40%, var(--green) 40%, var(--mist) 100%);
  opacity: .9;
}
.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.2vw, 32px);
  min-height: var(--header-h);
}

/* 品牌印章 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}
.brand__seal {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  line-height: 1;
  color: var(--paper-lift);
  background: linear-gradient(160deg, #C42B36, var(--red) 56%, var(--red-deep));
  box-shadow: 0 8px 16px -12px rgba(181, 35, 46, .95),
              inset 0 0 0 2px rgba(240, 217, 164, .55);
  transform: rotate(-3deg);
  transition: transform .18s var(--ease);
}
.brand:hover .brand__seal { transform: rotate(0deg) translateY(-1px); }
.brand__stack { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  letter-spacing: .08em;
  color: var(--brown);
}
.brand__line {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--tea);
}

/* ---------- 12. 主导航 ---------- */
.nav {
  margin-inline-start: auto;
  display: block;
}
.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.3vw, 20px);
}
.nav__item { display: flex; }
.nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  padding: 12px 2px;
  font-size: 14.5px;
  letter-spacing: .04em;
  color: var(--brown);
  white-space: nowrap;
  transition: color .18s var(--ease);
}
.nav__link::before {
  content: attr(data-i);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0;
  color: var(--mist);
  transform: translateY(-.35em);
  transition: color .18s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 5px;
  height: 2px;
  background: linear-gradient(90deg, var(--red), var(--gold));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .18s var(--ease);
}
.nav__link:hover { color: var(--red); }
.nav__link:hover::after,
.nav__link:focus-visible::after { transform: scaleX(1); }
.nav__link[aria-current="page"] { color: var(--red); font-weight: 700; }
.nav__link[aria-current="page"]::before { color: var(--red); }
.nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--gold);
}

.nav__foot { display: none; }
.nav__foot-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--tea);
  margin-bottom: 8px;
}
.nav__foot-list { display: grid; gap: 2px; }
.nav__sub {
  display: block;
  padding: 7px 0;
  font-size: 14px;
  color: var(--brown);
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.nav__sub:hover { color: var(--red); border-bottom-color: var(--gold); }

/* ---------- 13. 页头工具 ---------- */
.header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}
.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 15px;
  border-radius: 999px;
  border: 1px solid var(--mist);
  background: rgba(255, 255, 255, .5);
  color: var(--brown);
  font-size: 13px;
  letter-spacing: .08em;
  transition: transform .18s var(--ease), background-color .18s var(--ease),
              border-color .18s var(--ease), color .18s var(--ease);
}
.tool-btn:hover {
  transform: translateY(-1px);
  border-color: var(--red);
  color: var(--red);
}
.tool-btn__icon { font-size: 14px; line-height: 1; }
.tool-btn__text { line-height: 1.2; }
.tool-btn--gold {
  background: linear-gradient(160deg, #E7BE63, var(--gold));
  border-color: #C08F2C;
  color: #33251C;
  font-weight: 700;
  box-shadow: 0 10px 20px -18px rgba(212, 160, 60, .95);
}
.tool-btn--gold:hover {
  color: #241811;
  border-color: #A87A22;
  background: linear-gradient(160deg, #F0CE80, #DEB04C);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border-radius: 999px;
  border: 1px solid var(--red-deep);
  background: linear-gradient(160deg, #C42B36, var(--red) 65%, var(--red-deep));
  color: #FFF6E8;
  font-size: 13px;
  letter-spacing: .08em;
  box-shadow: 0 10px 20px -18px rgba(181, 35, 46, .95);
}
.nav-toggle__bars { display: grid; gap: 3px; }
.nav-toggle__bar {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .18s var(--ease), opacity .18s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle__text { line-height: 1.2; }

/* ---------- 14. 关键词索引面板 ---------- */
.search-panel {
  border-top: 1px solid var(--mist);
  background: linear-gradient(180deg, #FBF6E9, #F2EADA);
  box-shadow: inset 0 12px 20px -20px rgba(58, 42, 34, .8);
}
.search-panel__inner { padding-block: 20px 26px; }
.search-panel__lead {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--tea);
}
.search-panel__chips { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 6px;
  border: 1px solid var(--mist);
  background: #FFFDF6;
  color: var(--brown);
  font-size: 13px;
  letter-spacing: .03em;
  transition: transform .18s var(--ease), background-color .18s var(--ease),
              border-color .18s var(--ease), color .18s var(--ease);
}
.chip::before {
  content: "›";
  font-family: var(--font-mono);
  color: var(--gold);
}
.chip:hover {
  transform: translateY(-1px);
  border-color: var(--gold);
  background: #FFF8E4;
  color: var(--red);
}

/* ---------- 15. 左侧内容地图抽屉 ---------- */
.drawer {
  position: fixed;
  inset-block: 0;
  left: 0;
  z-index: 120;
  width: min(360px, 86vw);
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 24px 22px 28px;
  overflow: auto;
  color: var(--paper);
  background:
    repeating-linear-gradient(90deg, rgba(240, 217, 164, .05) 0 1px, transparent 1px 9px),
    linear-gradient(160deg, #234F3E, var(--green) 46%, var(--green-deep));
  box-shadow: 26px 0 60px -32px rgba(0, 0, 0, .75);
  transform: translateX(-102%);
  visibility: hidden;
  transition: transform .24s var(--ease), visibility .24s var(--ease);
}
.drawer[data-open] {
  transform: translateX(0);
  visibility: visible;
}
.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.drawer__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  letter-spacing: .1em;
  color: var(--gold-light);
}
.drawer__close {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(240, 217, 164, .45);
  color: var(--gold-light);
  font-size: 18px;
  line-height: 1;
  transition: background-color .18s var(--ease), border-color .18s var(--ease);
}
.drawer__close:hover { background: rgba(240, 217, 164, .14); border-color: var(--gold); }
.drawer__note {
  padding-left: 10px;
  border-left: 2px solid var(--gold);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(240, 217, 164, .74);
}
.drawer__list { display: grid; gap: 2px; }
.drawer__item { display: block; }
.drawer__link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 12px 10px;
  border-radius: 8px;
  border-bottom: 1px solid rgba(201, 178, 122, .22);
  transition: background-color .18s var(--ease), padding-left .18s var(--ease);
}
.drawer__link:hover { background: rgba(240, 217, 164, .1); padding-left: 15px; }
.drawer__k {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}
.drawer__v { font-size: 16px; letter-spacing: .04em; color: #FBF6E9; }
.drawer__t {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--gold-light);
  color: var(--green-deep);
  font-size: 11px;
  letter-spacing: .1em;
  white-space: nowrap;
}
.drawer__foot {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(201, 178, 122, .28);
}
.drawer__cta {
  display: block;
  padding: 12px;
  border-radius: 8px;
  text-align: center;
  font-weight: 700;
  letter-spacing: .08em;
  color: #33251C;
  background: linear-gradient(160deg, #E7BE63, var(--gold));
  transition: filter .18s var(--ease), transform .18s var(--ease);
}
.drawer__cta:hover { filter: brightness(1.06); transform: translateY(-1px); }

/* ---------- 16. 页脚底账 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  color: var(--paper);
  background:
    repeating-linear-gradient(90deg, rgba(240, 217, 164, .045) 0 1px, transparent 1px 11px),
    linear-gradient(180deg, #234F3E, var(--green) 44%, var(--green-deep));
}
.site-footer::before {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--red) 0%, var(--red) 20%, var(--gold) 20%, var(--gold) 44%, #2E6B52 44%, var(--mist) 100%);
}
.site-footer__inner {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  grid-template-columns: minmax(230px, 1.05fr) minmax(0, 1.65fr) minmax(220px, .95fr);
  padding-block: clamp(36px, 5vw, 64px) clamp(22px, 3vw, 36px);
}
.site-footer__brand { max-width: 34ch; }
.site-footer__mark {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.1;
  letter-spacing: .1em;
  color: var(--gold-light);
}
.site-footer__line {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: rgba(240, 217, 164, .72);
}
.site-footer__desc {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(247, 241, 227, .78);
}
.site-footer__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid rgba(240, 217, 164, .55);
  color: var(--gold-light);
  font-size: 13px;
  letter-spacing: .08em;
  transition: background-color .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease);
}
.site-footer__cta::after { content: "→"; font-family: var(--font-mono); }
.site-footer__cta:hover {
  transform: translateY(-1px);
  background: var(--gold);
  border-color: var(--gold);
  color: #2A1D16;
}

.site-footer__nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 32px);
}
.site-footer__col { min-width: 0; }
.site-footer__title {
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(201, 178, 122, .3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--gold);
}
.site-footer__list { display: grid; gap: 2px; }
.site-footer__link {
  display: inline-block;
  padding: 6px 0;
  font-size: 14px;
  color: rgba(247, 241, 227, .86);
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.site-footer__link:hover { color: #FFFFFF; border-bottom-color: var(--gold); }

.site-footer__contact { min-width: 0; }
.contact-list { display: grid; gap: 10px; }
.contact-list__row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}
.contact-list__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--gold);
}
.contact-list__v {
  font-size: 13.5px;
  line-height: 1.65;
  color: rgba(247, 241, 227, .88);
  word-break: break-word;
}
.contact-list__mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .01em;
  color: var(--gold-light);
}

.site-footer__legend {
  border-top: 1px solid rgba(201, 178, 122, .24);
  border-bottom: 1px solid rgba(201, 178, 122, .24);
}
.site-footer__legend-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  padding-block: 12px;
}
.legend__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(247, 241, 227, .82);
}
.legend__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: 0 0 auto;
}
.legend__dot--red { background: var(--red); box-shadow: 0 0 0 3px rgba(181, 35, 46, .26); }
.legend__dot--gold { background: var(--gold); box-shadow: 0 0 0 3px rgba(212, 160, 60, .26); }
.legend__dot--green { background: #4E9077; box-shadow: 0 0 0 3px rgba(78, 144, 119, .26); }
.legend__coord {
  margin-inline-start: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(240, 217, 164, .6);
}

.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
  padding-block: 18px 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: rgba(240, 217, 164, .62);
}
.site-footer__copy,
.site-footer__icp,
.site-footer__note { margin: 0; }
.site-footer__note { margin-inline-start: auto; }

/* ---------- 17. 响应式 ---------- */
@media (max-width: 1080px) {
  .site-header__inner { min-height: 66px; }

  .nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    margin-inline-start: 0;
    display: none;
    max-height: min(72vh, 560px);
    overflow: auto;
    padding: 10px 14px 16px;
    border-radius: 14px;
    border: 1px solid var(--mist);
    background: linear-gradient(180deg, var(--paper-lift), #F3EBD9);
    box-shadow: var(--shadow-lift);
    z-index: 70;
  }
  .nav[data-open] {
    display: block;
    animation: navDrop .18s var(--ease);
  }
  .nav__list { display: grid; gap: 0; }
  .nav__item {
    display: block;
    border-bottom: 1px solid rgba(201, 178, 122, .32);
  }
  .nav__item:last-child { border-bottom: 0; }
  .nav__link {
    display: flex;
    width: 100%;
    justify-content: flex-start;
    gap: 10px;
    padding: 13px 6px;
    font-size: 16px;
    white-space: normal;
  }
  .nav__link::before { font-size: 11px; }
  .nav__link::after { display: none; }
  .nav__link[aria-current="page"] {
    padding-left: 12px;
    border-radius: 8px;
    background: linear-gradient(90deg, rgba(181, 35, 46, .1), rgba(181, 35, 46, 0) 74%);
  }
  .nav__foot {
    display: block;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px dashed var(--mist);
  }
  .nav-toggle { display: inline-flex; }
  .tool-btn[data-drawer-toggle] { display: none; }
}

@media (max-width: 1023px) {
  .site-footer__inner { grid-template-columns: 1fr 1fr; }
  .site-footer__brand { grid-column: 1 / -1; max-width: 46ch; }
  .site-footer__contact { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .rail__note { display: none; }
  .rail__link { margin-inline-start: auto; }
  .site-footer__legend-inner { gap: 10px 16px; }
  .legend__coord { margin-inline-start: 0; }
}

@media (max-width: 639px) {
  .site-footer__inner { grid-template-columns: 1fr; }
  .site-footer__nav { grid-template-columns: 1fr 1fr; }
  .site-footer__contact { grid-column: auto; }
  .site-footer__base { gap: 6px 16px; }
  .site-footer__note { margin-inline-start: 0; }
  .grid--2, .grid--3 { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .brand__line { display: none; }
  .brand__name { font-size: 19px; }
  .brand__seal { width: 38px; height: 38px; font-size: 19px; border-radius: 9px; }
  .tool-btn { padding: 8px 12px; font-size: 12px; }
  .nav-toggle { padding: 8px 12px; font-size: 12px; }
  .search-panel__inner { padding-block: 16px 20px; }
  .drawer { padding: 20px 18px 22px; }
}

@keyframes navDrop {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 18. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .nav[data-open] { animation: none; }
  .btn:hover,
  .card:hover,
  .filter__item:hover,
  .tool-btn:hover,
  .chip:hover,
  .drawer__cta:hover,
  .site-footer__cta:hover,
  .brand:hover .brand__seal { transform: none; }
}