/* =========================================================
   万博MAX · 共享样式表 /assets/site.css
   午夜霓虹控制台 × 夜场灯箱 —— reset / 变量 / 排版 / 头尾 / 通用组件
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: #0B0B0D;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ivory);
  background-color: var(--ink);
  background-image:
    radial-gradient(900px 520px at 88% -12%, rgba(110, 11, 27, .58), transparent 62%),
    radial-gradient(720px 460px at 4% 6%, rgba(142, 18, 38, .26), transparent 60%),
    linear-gradient(180deg, #0B0B0D 0%, #0e0c10 100%);
  background-repeat: no-repeat;
  background-attachment: fixed;
}

main { display: block; }

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

a { color: var(--gold-hi); text-decoration: none; }

ul, ol { margin: 0; padding: 0; list-style: none; }

h1, h2, h3, h4, p, figure { margin: 0; }

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

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #0B0B0D;
  --ink-2: #16121A;
  --red: #6E0B1B;
  --red-2: #8E1226;
  --gold: #C8A24A;
  --gold-hi: #F0D48A;
  --ivory: #F6F1E7;
  --mist: #B9B3AC;
  --cyan: #22E0C8;
  --orange: #FF7A2F;

  --line: rgba(200, 162, 74, .32);
  --line-strong: rgba(200, 162, 74, .62);
  --line-soft: rgba(200, 162, 74, .16);

  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
          system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular,
          Menlo, Consolas, "Courier New", monospace;

  --rail: 272px;
  --header-h: 62px;
  --radius: 2px;
  --shadow: 0 24px 58px -32px rgba(0, 0, 0, .95);
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 3. 中文排版与工具类 ---------- */
.metal {
  background-image: linear-gradient(135deg, #8E1226 0%, #C8A24A 42%, #F0D48A 58%, #C8A24A 82%, #6E0B1B 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 1px 0 rgba(0, 0, 0, .65));
}

.eyebrow {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--gold);
}

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

.rule {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--line-strong), transparent);
}

/* ---------- 4. 布局骨架 ---------- */
.wrap {
  width: min(1180px, calc(100% - 2.5rem));
  margin-inline: auto;
}

.section {
  position: relative;
  padding: clamp(52px, 7.5vw, 108px) 0;
}

.section--band {
  background-image: linear-gradient(95deg, var(--red) 0%, #4a0713 52%, rgba(11, 11, 13, .2) 100%);
  border-block: 1px solid var(--line);
}

.band {
  position: relative;
  padding: clamp(18px, 3vw, 30px) 0;
  background-image: linear-gradient(90deg, rgba(110, 11, 27, .95) 0%, rgba(69, 7, 15, .7) 55%, transparent 100%);
  border-block: 1px solid var(--line);
  overflow: hidden;
}

.chapter {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.chapter__no {
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .26em;
  color: var(--gold);
  padding-top: 8px;
  border-top: 1px solid var(--line-strong);
}

.chapter__title {
  font-size: clamp(1.35rem, 2.6vw, 2.15rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: .015em;
  color: var(--ivory);
}

.grid { display: grid; gap: clamp(16px, 2.4vw, 26px); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr)); }
.grid--rail { grid-template-columns: minmax(0, 1fr); }

.prose {
  max-width: 34em;
  color: var(--mist);
  font-size: 1rem;
  line-height: 1.85;
}
.prose p + p { margin-top: 1em; }
.prose strong { color: var(--ivory); font-weight: 700; }
.prose a { color: var(--cyan); border-bottom: 1px solid rgba(34, 224, 200, .42); }

/* ---------- 5. 面包屑 ---------- */
.breadcrumbs {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}
.breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: .55em; }
.breadcrumbs li { display: flex; align-items: center; }
.breadcrumbs li::after { content: "/"; margin-left: .55em; color: var(--line-strong); }
.breadcrumbs li:last-child::after { content: ""; }
.breadcrumbs a { color: var(--gold-hi); }
.breadcrumbs a:hover { color: var(--cyan); }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .55em;
  padding: .82rem 1.5rem;
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--ivory);
  background: rgba(200, 162, 74, .06);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: transform .25s var(--ease), background-color .25s var(--ease),
              border-color .25s var(--ease), color .25s var(--ease);
}
.btn:hover { transform: translateY(-2px); border-color: var(--cyan); color: var(--cyan); }

.btn--primary {
  color: #1b0f06;
  background-image: linear-gradient(120deg, #FF7A2F, #FF9A5A);
  border-color: #FFB27A;
}
.btn--primary:hover {
  color: #1b0f06;
  background-image: linear-gradient(120deg, #FF9A5A, #FFC08A);
  border-color: #FFD3AE;
}

.btn--ghost {
  color: var(--gold-hi);
  background: transparent;
}
.btn--ghost:hover { color: var(--cyan); border-color: var(--cyan); }

/* ---------- 7. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  left: 14px;
  top: -120px;
  z-index: 300;
  padding: 10px 18px;
  font-weight: 700;
  font-size: .9rem;
  color: #1b0f06;
  background-image: linear-gradient(120deg, var(--gold-hi), var(--gold));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: top .22s var(--ease);
}
.skip-link:focus { top: 14px; }

/* ---------- 8. 页头（移动端：顶部窄条 + 底部标签条 + 抽屉） ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: var(--header-h);
  padding: 10px 16px;
  background-image: linear-gradient(180deg, rgba(24, 17, 24, .98), rgba(11, 11, 13, .96));
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.brand-rail {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand__mark {
  flex: 0 0 auto;
  padding: 4px 7px;
  font-family: var(--mono);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .16em;
  color: #1b0f06;
  background-image: linear-gradient(135deg, var(--gold-hi), var(--gold));
  border-radius: var(--radius);
}

.brand__name {
  font-size: 1.05rem;
  font-weight: 900;
  letter-spacing: .02em;
  color: var(--ivory);
  white-space: nowrap;
}

.brand__sub {
  margin-left: .35em;
  font-size: .76rem;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--mist);
}

.brand__tagline { display: none; }

.brand__version {
  flex: 0 0 auto;
  padding: 2px 9px;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(34, 224, 200, .42);
  border-radius: 999px;
  white-space: nowrap;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 8px 12px;
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--gold-hi);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: background-color .25s var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform .28s var(--ease), top .28s var(--ease);
}
.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

/* 抽屉面板（移动端） */
.site-nav__panel {
  position: fixed;
  left: 0;
  right: 0;
  top: var(--header-h);
  z-index: 70;
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
  padding: 18px 16px 26px;
  background-image: linear-gradient(180deg, #1a1119 0%, #0d0b0e 88%);
  border-bottom: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-10px);
  transition: opacity .26s var(--ease), transform .3s var(--ease), visibility .3s linear;
}

.site-nav[data-open] .site-nav__panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.site-nav__eyebrow {
  margin-bottom: 10px;
  padding-top: 10px;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--gold);
  border-top: 1px solid var(--line);
}

.site-nav__list { display: flex; flex-direction: column; gap: 2px; }

.site-nav__link {
  display: block;
  padding: 9px 12px;
  font-size: .94rem;
  font-weight: 500;
  color: var(--ivory);
  border-left: 2px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.site-nav__link:hover {
  color: var(--gold-hi);
  background: rgba(200, 162, 74, .08);
}

.site-nav__link[aria-current="page"] {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background-image: linear-gradient(90deg, rgba(34, 224, 200, .12), transparent);
}

.site-nav__list--quick {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
}

.site-nav__link--quick {
  font-family: var(--mono);
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--gold-hi);
}

/* 底部标签条（移动端） */
.site-nav__list--tabs {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 65;
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 0;
  background: rgba(13, 11, 15, .97);
  border-top: 1px solid var(--line-strong);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.site-nav__list--tabs::-webkit-scrollbar { display: none; }

.site-nav__list--tabs .site-nav__link {
  flex: 0 0 auto;
  padding: 11px 14px 12px;
  font-family: var(--mono);
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--mist);
  white-space: nowrap;
  border-left: 0;
  border-top: 2px solid transparent;
}
.site-nav__list--tabs .site-nav__link[aria-current="page"] {
  color: var(--cyan);
  border-left-color: transparent;
  border-top-color: var(--cyan);
  background-image: linear-gradient(180deg, rgba(34, 224, 200, .14), transparent);
}

/* ---------- 9. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(46px, 7vw, 96px);
  color: var(--mist);
  font-size: .9rem;
  background-image: linear-gradient(180deg, #0B0B0D 0%, #16121A 42%, #120c10 100%);
  border-top: 1px solid var(--line-strong);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(420px, 62%);
  height: 2px;
  background-image: linear-gradient(90deg, var(--orange), var(--gold), transparent);
}

.footer-wrap {
  width: min(1180px, calc(100% - 2rem));
  margin-inline: auto;
  padding: clamp(38px, 5.5vw, 70px) 0 26px;
}

.footer-top { display: grid; gap: 34px; }

.footer-brand { display: flex; flex-direction: column; gap: 14px; align-items: flex-start; }

.brand--footer .brand__name { font-size: 1.15rem; }

.footer-slogan {
  max-width: 26em;
  font-size: .88rem;
  line-height: 1.7;
  letter-spacing: .03em;
  color: var(--mist);
  padding-left: 12px;
  border-left: 2px solid var(--red-2);
}

.footer-latest {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  color: var(--ivory);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(200, 162, 74, .06);
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.footer-latest:hover { border-color: var(--cyan); color: var(--cyan); }

.footer-latest__no {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--orange);
}

.footer-latest__text { font-size: .86rem; font-weight: 700; letter-spacing: .04em; }

.footer-cols {
  display: grid;
  gap: 26px;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 140px), 1fr));
}

.footer-col__title {
  margin-bottom: 12px;
  padding-top: 8px;
  font-family: var(--mono);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold);
  border-top: 1px solid var(--line);
}

.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a {
  color: var(--mist);
  font-size: .88rem;
  transition: color .2s var(--ease);
}
.footer-links a:hover { color: var(--cyan); }

.footer-contact {
  display: grid;
  gap: 8px;
  margin-top: clamp(30px, 4vw, 46px);
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}

.footer-contact__item {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  font-family: var(--mono);
  font-size: .82rem;
  letter-spacing: .04em;
  color: var(--mist);
}

.footer-contact__key {
  flex: 0 0 auto;
  min-width: 5.2em;
  font-size: .7rem;
  letter-spacing: .2em;
  color: var(--gold);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 22px;
  padding-top: 16px;
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .12em;
  color: rgba(185, 179, 172, .78);
  border-top: 1px solid var(--line-soft);
}

.footer-sep { color: var(--line-strong); }

/* ---------- 10. 卡片 / 标签 / 折叠面板 / 图片容器 ---------- */
.card {
  position: relative;
  padding: 22px;
  background-image: linear-gradient(160deg, rgba(32, 21, 28, .92), rgba(15, 12, 16, .96));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color .28s var(--ease), transform .28s var(--ease);
}
.card:hover { border-color: rgba(34, 224, 200, .48); transform: translateY(-3px); }

.card__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold);
}

.card__title {
  font-size: 1.08rem;
  font-weight: 800;
  line-height: 1.4;
  color: var(--ivory);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: .4em;
  padding: 3px 10px;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold-hi);
  background: rgba(200, 162, 74, .1);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
}
.tag--cyan { color: var(--cyan); border-color: rgba(34, 224, 200, .5); background: rgba(34, 224, 200, .1); }
.tag--orange { color: var(--orange); border-color: rgba(255, 122, 47, .5); background: rgba(255, 122, 47, .1); }

.panel { display: flex; flex-direction: column; gap: 10px; }

.panel__item {
  background: rgba(22, 18, 26, .74);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .28s var(--ease);
}
.panel__item[data-open] { border-color: rgba(34, 224, 200, .48); }

.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 14px 16px;
  font-size: .97rem;
  font-weight: 700;
  text-align: left;
  color: var(--ivory);
}
.panel__head::after {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-right: 4px;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(45deg);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}
.panel__item[data-open] .panel__head::after {
  transform: rotate(-135deg);
  border-color: var(--cyan);
}

.panel__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .36s var(--ease);
}
.panel__item[data-open] .panel__body { grid-template-rows: 1fr; }
.panel__inner { overflow: hidden; }
.panel__inner p {
  padding: 0 16px 16px;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--mist);
}

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background-image: linear-gradient(140deg, #1b1220 0%, #0d0b0e 72%);
  box-shadow: var(--shadow);
  isolation: isolate;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px);
  background-size: 4px 4px;
  opacity: .45;
  pointer-events: none;
  mix-blend-mode: overlay;
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: 6px 12px;
  font-family: var(--mono);
  font-size: .66rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ivory);
  background-image: linear-gradient(135deg, var(--red), var(--red-2));
  border-top: 1px solid var(--line-strong);
  border-right: 1px solid var(--line-strong);
}

/* ---------- 11. 显现 / 回到顶部 / 动效降级 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
html.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

.to-top {
  position: fixed;
  right: 18px;
  bottom: 78px;
  z-index: 80;
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--gold-hi);
  background: rgba(13, 11, 15, .92);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity .3s var(--ease), transform .3s var(--ease),
              color .25s var(--ease), border-color .25s var(--ease);
}
.to-top.is-on { opacity: 1; transform: none; pointer-events: auto; }
.to-top:hover { color: var(--cyan); border-color: var(--cyan); }

/* ---------- 12. 平板 / 桌面 ---------- */
@media (min-width: 640px) {
  .brand__version { margin-left: 4px; }
  .footer-contact { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
}

@media (min-width: 820px) {
  .footer-top { grid-template-columns: 1.05fr 1.7fr; gap: 56px; align-items: start; }
  .footer-cols { gap: 30px; }
  .grid--rail { grid-template-columns: minmax(0, 1.55fr) minmax(230px, .85fr); }
}

@media (min-width: 1080px) {
  body { padding-left: var(--rail); padding-bottom: 0; }

  .site-header {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--rail);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 28px 20px 24px;
    overflow-y: auto;
    border-bottom: 0;
    border-right: 1px solid var(--line);
    background-image: linear-gradient(180deg, #170f16 0%, #0d0b0e 56%, #0B0B0D 100%);
  }

  .brand-rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    width: 100%;
  }

  .brand { flex-direction: column; align-items: flex-start; gap: 10px; }

  .brand__name { font-size: 1.22rem; line-height: 1.3; white-space: normal; }
  .brand__sub { display: block; margin: 5px 0 0; }

  .brand__tagline {
    display: block;
    font-size: .82rem;
    line-height: 1.65;
    letter-spacing: .04em;
    color: var(--mist);
    padding-left: 11px;
    border-left: 2px solid var(--red-2);
  }

  .brand__version { margin-left: 0; }

  .nav-toggle { display: none; }

  .site-nav {
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    margin-top: 34px;
    min-height: 0;
  }

  .site-nav__panel {
    position: static;
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    max-height: none;
    overflow: visible;
    padding: 0;
    background-image: none;
    border-bottom: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }

  .site-nav__eyebrow { margin-bottom: 14px; }

  .site-nav__link { font-size: .92rem; padding: 8px 12px; }

  .site-nav__list--quick { margin-top: auto; }

  .site-nav__list--tabs { display: none; }

  .to-top { bottom: 26px; right: 26px; }
}

@media (max-width: 1079px) {
  body { padding-bottom: 62px; }
}

/* ---------- 13. 减少动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    transition-delay: 0ms !important;
  }

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

  .site-nav__panel { transform: none; }
  .card:hover { transform: none; }
  .btn:hover { transform: none; }
  .to-top { transform: none; }
}