/* ==========================================================================
   大赢家开服 · 共享站点样式 /assets/site.css
   展览画册式布局：玻璃展签导航 + 深墨绿展厅页脚
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 品牌色板 */
  --sand-gold: #C98A2E;
  --tianshan-blue: #1E6FA8;
  --grape-purple: #6A3FA0;
  --warm-orange: #E06A32;
  --deep-green: #123B33;
  --sandstone: #F6EFE3;
  --paper-grey: #E7E0D4;
  --midnight: #121619;
  --glass-teal: #8FD3D0;
  --data-blue: #2F9BD6;

  /* 语义色 */
  --bg: var(--sandstone);
  --bg-alt: var(--paper-grey);
  --fg: var(--midnight);
  --fg-muted: rgba(18, 22, 25, 0.66);
  --line: rgba(18, 22, 25, 0.14);
  --line-strong: rgba(18, 22, 25, 0.3);
  --on-dark: var(--sandstone);
  --on-dark-muted: rgba(246, 239, 227, 0.74);
  --line-dark: rgba(246, 239, 227, 0.18);
  --gold-ink: #9A6413;

  /* 字体 */
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* 字号阶梯 12/14/16/18/24/32/48/72 */
  --step--1: 12px;
  --step-0: clamp(15px, 0.4vw + 14px, 18px);
  --step-1: clamp(18px, 0.8vw + 15px, 22px);
  --step-2: clamp(24px, 1.6vw + 18px, 32px);
  --step-3: clamp(32px, 2.8vw + 22px, 48px);
  --step-4: clamp(42px, 5vw + 26px, 72px);

  /* 结构 */
  --header-h: 74px;
  --shell-max: 1300px;
  --radius: 4px;

  /* 动效 */
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --t-nav: 180ms;
  --t-card: 200ms;
  --t-filter: 220ms;
  --t-timeline: 300ms;
}

/* ---------- 2. 重置与基础 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 18px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  font-weight: 400;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.is-nav-open { overflow: hidden; }

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em;
  color: var(--midnight);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0 0 1em; padding-left: 1.2em; }

a { color: var(--tianshan-blue); text-decoration: none; }
a:hover { color: var(--grape-purple); }

img, svg, video { display: block; max-width: 100%; height: auto; }

button { font: inherit; color: inherit; }

hr { border: 0; border-top: 1px solid var(--line); margin: 2em 0; }

:target, [id] { scroll-margin-top: calc(var(--header-h) + 20px); }

:focus-visible {
  outline: 2px solid var(--data-blue);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background: rgba(201, 138, 46, 0.32);
  color: var(--midnight);
}

/* ---------- 3. 通用容器与栅格 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 56px);
}

.shell--narrow { max-width: 920px; }

.section {
  padding-block: clamp(48px, 7vw, 96px);
}

.section--tight { padding-block: clamp(30px, 4vw, 56px); }

.section--paper { background: var(--bg-alt); }

.section--dark {
  background: var(--deep-green);
  color: var(--on-dark);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 { color: var(--on-dark); }

.section-head { max-width: 72ch; margin-bottom: clamp(22px, 3vw, 40px); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: 0.22em;
  color: var(--gold-ink);
}

.eyebrow::before {
  content: "";
  display: block;
  width: 26px;
  height: 2px;
  background: currentColor;
}

.section--dark .eyebrow { color: var(--sand-gold); }

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 32px);
}

.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: clamp(24px, 4vw, 64px);
  align-items: start;
}

.stack {
  display: grid;
  gap: clamp(14px, 2vw, 24px);
  align-content: start;
}

/* ---------- 4. 通用文字与标签 ---------- */
.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

.muted { color: var(--fg-muted); }

.plate {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: rgba(246, 239, 227, 0.6);
  color: var(--midnight);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  line-height: 1.4;
}

.plate--gold {
  border-color: rgba(201, 138, 46, 0.55);
  background: rgba(201, 138, 46, 0.14);
  color: var(--gold-ink);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.5;
}

.tag--gold { background: rgba(201, 138, 46, 0.16); color: var(--gold-ink); }
.tag--blue { background: rgba(30, 111, 168, 0.14); color: #15547C; }
.tag--purple { background: rgba(106, 63, 160, 0.14); color: #55307F; }
.tag--green { background: rgba(18, 59, 51, 0.14); color: var(--deep-green); }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 3px;
  background: transparent;
  color: var(--midnight);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--t-nav) ease,
    color var(--t-nav) ease,
    border-color var(--t-nav) ease,
    transform var(--t-card) var(--ease),
    box-shadow var(--t-card) var(--ease);
}

.btn:hover { text-decoration: none; }

.btn--primary {
  background: var(--warm-orange);
  color: #FFF8F2;
  box-shadow: 0 10px 24px -18px rgba(224, 106, 50, 0.95);
}

.btn--primary:hover {
  background: #C85A26;
  color: #FFF8F2;
  transform: translateY(-2px);
}

.btn--blue { background: var(--tianshan-blue); color: #FFFFFF; }
.btn--blue:hover { background: #175A8A; color: #FFFFFF; transform: translateY(-2px); }

.btn--gold { background: var(--sand-gold); color: #1A1206; }
.btn--gold:hover { background: #B07722; color: #1A1206; transform: translateY(-2px); }

.btn--dark { background: var(--deep-green); color: var(--sandstone); }
.btn--dark:hover { background: #0C2C26; color: var(--sandstone); transform: translateY(-2px); }

.btn--ghost {
  border-color: var(--line-strong);
  color: inherit;
}

.btn--ghost:hover {
  border-color: var(--tianshan-blue);
  color: var(--tianshan-blue);
  transform: translateY(-2px);
}

.btn--sm { padding: 8px 14px; font-size: 13px; }
.btn--block { display: flex; width: 100%; }

/* ---------- 6. 卡片与面层 ---------- */
.panel {
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(246, 239, 227, 0.72);
}

.panel--glass {
  border-color: rgba(246, 239, 227, 0.3);
  background: rgba(18, 22, 25, 0.28);
  color: var(--on-dark);
  -webkit-backdrop-filter: blur(12px) saturate(130%);
  backdrop-filter: blur(12px) saturate(130%);
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--sandstone);
  transition:
    transform var(--t-card) var(--ease),
    box-shadow var(--t-card) var(--ease),
    border-color var(--t-card) var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(30, 111, 168, 0.4);
  box-shadow: 0 20px 44px -34px rgba(18, 22, 25, 0.95);
}

.card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

/* ---------- 7. 媒体容器（供页面阶段放置图片） ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(201, 138, 46, 0.18), rgba(30, 111, 168, 0.16) 60%, rgba(106, 63, 160, 0.14)),
    var(--paper-grey);
  isolation: isolate;
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(180deg, rgba(18, 22, 25, 0) 52%, rgba(18, 22, 25, 0.38) 100%);
  pointer-events: none;
}

.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-card) var(--ease);
}

.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media--band { aspect-ratio: 21 / 9; }

.media--cut {
  clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
}

.media__caption {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
}

.section--dark .media__caption { color: var(--on-dark-muted); }

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  padding-top: clamp(84px, 8vw, 108px);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--fg-muted);
}

.breadcrumb__item { display: inline-flex; align-items: center; }
.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  opacity: 0.5;
}

.breadcrumb__link { color: inherit; }
.breadcrumb__link:hover { color: var(--grape-purple); }
.breadcrumb__item[aria-current="page"] { color: var(--midnight); }

/* ---------- 9. 长文正文 ---------- */
.prose {
  max-width: 70ch;
  font-size: var(--step-0);
  line-height: 1.8;
  color: var(--fg);
}

.prose h2 { margin-top: 2em; font-size: var(--step-2); }
.prose h3 { margin-top: 1.6em; font-size: var(--step-1); }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin-bottom: 0.4em; }
.prose strong { font-weight: 800; color: var(--midnight); }
.prose blockquote {
  margin: 1.6em 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--sand-gold);
  color: var(--fg-muted);
}

/* ---------- 10. 显现动效 ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 420ms var(--ease),
    transform 420ms var(--ease);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 11. 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 300;
  padding: 10px 18px;
  border-radius: 3px;
  background: var(--sand-gold);
  color: #1A1206;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform var(--t-nav) var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: none;
  color: #1A1206;
  outline-color: var(--midnight);
}

/* ---------- 12. 头部 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  color: var(--sandstone);
  background: rgba(18, 22, 25, 0.34);
  border-bottom: 1px solid rgba(246, 239, 227, 0.16);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  transition:
    background-color var(--t-nav) ease,
    color var(--t-nav) ease,
    border-color var(--t-nav) ease,
    box-shadow var(--t-nav) ease;
}

.site-header[data-scrolled] {
  --header-h: 64px;
  color: var(--midnight);
  background: rgba(246, 239, 227, 0.95);
  border-bottom-color: rgba(18, 22, 25, 0.14);
  box-shadow: 0 16px 38px -32px rgba(18, 22, 25, 0.95);
}

.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  overflow: hidden;
  pointer-events: none;
}

.header-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--sand-gold) 0%, var(--warm-orange) 100%);
  transition: width 120ms linear;
}

.header-shell {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
  min-height: var(--header-h);
  transition: min-height var(--t-nav) var(--ease);
}

/* 品牌展签 */
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  padding-block: 10px;
  color: inherit;
  text-decoration: none;
}

.brand:hover { color: inherit; }

.brand__plate {
  flex: 0 0 auto;
  padding: 7px 8px;
  border: 1px solid currentColor;
  border-radius: 2px;
  color: var(--sand-gold);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1;
  letter-spacing: 0.16em;
  transition: color var(--t-nav) ease, border-color var(--t-nav) ease;
}

.site-header[data-scrolled] .brand__plate {
  color: var(--deep-green);
  border-color: rgba(18, 59, 51, 0.45);
}

.brand__text { display: block; }

.brand__name {
  display: block;
  font-size: clamp(16px, 1.5vw, 19px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.brand__descriptor {
  display: block;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  opacity: 0.68;
}

/* 主导航 */
.site-nav {
  display: flex;
  align-items: center;
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__item { margin: 0; }

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 9px 11px;
  border-radius: 3px;
  color: inherit;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  transition:
    color var(--t-nav) ease,
    background-color var(--t-nav) ease;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 3px;
  height: 2px;
  background: linear-gradient(90deg, var(--sand-gold), var(--warm-orange));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t-card) var(--ease);
}

.site-nav__link:hover {
  color: inherit;
  background: rgba(143, 211, 208, 0.16);
}

.site-nav__link:hover::after,
.site-nav__link:focus-visible::after,
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] { font-weight: 900; }

.site-nav__index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--sand-gold);
  opacity: 0.92;
  transition: color var(--t-nav) ease;
}

.site-header[data-scrolled] .site-nav__index { color: var(--gold-ink); }

/* 抽屉底部快捷入口：仅移动端出现 */
.site-nav__foot { display: none; }

.site-nav__calendar {
  display: block;
  padding-bottom: 5px;
  border-bottom: 1px solid rgba(246, 239, 227, 0.42);
  color: var(--sandstone);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
}

.site-nav__calendar:hover { color: var(--sand-gold); }

/* 头部行动区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 6px;
}

.header-cta { padding: 10px 18px; font-size: 14px; }

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid currentColor;
  border-radius: 3px;
  background: transparent;
  color: inherit;
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  transition: background-color var(--t-nav) ease, color var(--t-nav) ease;
}

.nav-toggle:hover { background: rgba(143, 211, 208, 0.16); }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 16px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform var(--t-nav) var(--ease);
}

.site-header[data-open] .nav-toggle__bars span:nth-child(1) { transform: translateY(3px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars span:nth-child(2) { transform: translateY(-3px) rotate(-45deg); }

/* ---------- 13. 页脚 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  padding-block: clamp(46px, 6.5vw, 84px) clamp(24px, 3vw, 34px);
  background: var(--deep-green);
  color: var(--on-dark-muted);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--sand-gold) 0%,
    var(--warm-orange) 26%,
    var(--grape-purple) 62%,
    var(--tianshan-blue) 100%
  );
}

.site-footer::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -46%;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle at 34% 34%, rgba(201, 138, 46, 0.22), rgba(201, 138, 46, 0) 64%);
  pointer-events: none;
}

.site-footer .shell { position: relative; z-index: 1; }

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.65fr);
  gap: clamp(30px, 5vw, 72px);
}

.footer-brand__plate {
  display: inline-block;
  margin: 0 0 16px;
  padding: 5px 9px;
  border: 1px solid rgba(201, 138, 46, 0.6);
  border-radius: 2px;
  color: var(--sand-gold);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  line-height: 1.4;
}

.footer-brand__name {
  margin: 0 0 14px;
  color: var(--sandstone);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.footer-brand__note {
  max-width: 36ch;
  margin: 0;
  color: var(--on-dark-muted);
  font-size: 13px;
  line-height: 1.72;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 34px);
}

.footer-col__title {
  margin: 0 0 14px;
  color: var(--sand-gold);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.2em;
  line-height: 1.4;
}

.footer-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-link {
  display: inline-block;
  color: rgba(246, 239, 227, 0.86);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color var(--t-nav) ease, transform var(--t-card) var(--ease);
}

.footer-link:hover {
  color: var(--sandstone);
  transform: translateX(3px);
}

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 8px clamp(18px, 3vw, 34px);
  margin-top: clamp(30px, 4.5vw, 54px);
  padding-top: 22px;
  border-top: 1px solid var(--line-dark);
  color: rgba(246, 239, 227, 0.78);
  font-size: 13px;
}

.footer-contact__item { margin: 0; word-break: break-word; }

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid rgba(246, 239, 227, 0.12);
  color: rgba(246, 239, 227, 0.62);
  font-size: 12px;
}

.footer-legal {
  margin: 0;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.to-top {
  margin-left: auto;
  padding: 8px 14px;
  border: 1px solid rgba(246, 239, 227, 0.34);
  border-radius: 3px;
  background: transparent;
  color: var(--sandstone);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition:
    background-color var(--t-nav) ease,
    color var(--t-nav) ease,
    border-color var(--t-nav) ease;
}

.to-top:hover {
  background: var(--sand-gold);
  border-color: var(--sand-gold);
  color: #1A1206;
}

/* ---------- 14. 响应式 ---------- */
@media (max-width: 1080px) {
  .site-nav__link { padding: 9px 8px; font-size: 13px; }
  .site-nav__link::after { left: 8px; right: 8px; }
  .header-cta { padding: 9px 14px; font-size: 13px; }
}

@media (max-width: 900px) {
  :root { --header-h: 68px; }

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

  .site-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    z-index: 110;
    width: min(360px, 88vw);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    margin: 0;
    padding: 26px clamp(20px, 5vw, 28px) calc(24px + env(safe-area-inset-bottom, 0px));
    overflow-y: auto;
    background: var(--deep-green);
    color: var(--sandstone);
    border-left: 1px solid rgba(246, 239, 227, 0.16);
    box-shadow: -26px 0 60px -44px rgba(0, 0, 0, 0.95);
    transform: translateX(104%);
    transition: transform var(--t-card) var(--ease);
  }

  .site-header[data-open] .site-nav { transform: none; }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px 2px;
    border-radius: 0;
    border-bottom: 1px solid rgba(246, 239, 227, 0.14);
    font-size: 18px;
    font-weight: 800;
    color: var(--sandstone);
  }

  .site-nav__link::after { display: none; }
  .site-nav__link:hover { background: transparent; color: var(--sand-gold); }
  .site-nav__link[aria-current="page"] { color: var(--sand-gold); }

  .site-nav__index {
    flex: 0 0 auto;
    width: 24px;
    color: var(--sand-gold);
    font-size: 11px;
  }

  .site-nav__foot {
    display: grid;
    gap: 14px;
    margin-top: auto;
    padding-top: 24px;
    border-top: 1px solid rgba(246, 239, 227, 0.16);
  }

  .split { grid-template-columns: minmax(0, 1fr); }
  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .footer-top { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 700px) {
  .grid--12 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 18px; }

  .breadcrumb { padding-top: 84px; }
}

@media (max-width: 560px) {
  .brand__descriptor { display: none; }
  .header-cta { display: none; }
  .nav-toggle__text { display: none; }
  .nav-toggle { padding: 10px; }
  .footer-meta { gap: 10px 14px; }
  .to-top { margin-left: 0; }
}

/* ---------- 15. 可访问性偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .card:hover,
  .btn:hover,
  .footer-link:hover,
  .media__img { transform: none; }
}