/* =========================================================
   168中体网 /assets/site.css
   中轴体系：暖纸底 · 墨黑轨道 · 朱砂红 · 暖金
   ========================================================= */

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

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

body, h1, h2, h3, h4, h5, h6, p, ul, ol, li,
figure, figcaption, blockquote, dl, dd { margin: 0; }

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

img, svg, 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;
}

input { font: inherit; color: inherit; }

[hidden] { display: none !important; }

::selection { background: var(--cinnabar); color: #fff; }

/* ---------- 2. 设计令牌 ---------- */
:root {
  --paper: #F4EFE6;
  --paper-lift: #FBF8F2;
  --ink: #171412;
  --ink-deep: #2A2420;
  --cinnabar: #B23A2A;
  --cinnabar-deep: #8E2B1F;
  --slate: #6E7B78;
  --gold: #C49A4A;
  --mist: #D9DEDB;
  --index-gray: #8A8178;

  --line: rgba(23, 20, 18, .16);
  --line-soft: rgba(23, 20, 18, .08);
  --line-strong: rgba(23, 20, 18, .34);
  --line-invert: rgba(244, 239, 230, .20);
  --line-invert-soft: rgba(244, 239, 230, .09);
  --on-dark: #F4EFE6;
  --on-dark-dim: rgba(244, 239, 230, .64);

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

  --rail-w: 19rem;
  --page-max: 76rem;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --radius-s: 2px;
  --radius-m: 8px;
  --radius-l: 22px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --shadow-soft: 0 24px 60px -40px rgba(23, 20, 18, .55);
}

/* ---------- 3. 基础中文排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: clamp(1rem, .45vw + .9rem, 1.0625rem);
  line-height: 1.8;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(58rem 34rem at 102% -6%, rgba(196, 154, 74, .14), transparent 62%),
    radial-gradient(52rem 30rem at -10% 104%, rgba(178, 58, 42, .08), transparent 58%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: .01em;
}

p { text-wrap: pretty; }

#main-content { scroll-margin-top: 5.5rem; }

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

@media (min-width: 1080px) {
  body { padding-left: var(--rail-w); }
  #main-content { scroll-margin-top: 0; }
}

/* ---------- 4. 无障碍基础 ---------- */
.visually-hidden {
  position: absolute;
  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;
}

.skip-link {
  position: fixed;
  top: .5rem;
  left: .5rem;
  z-index: 200;
  padding: .6rem 1.05rem;
  background: var(--paper-lift);
  color: var(--ink);
  border: 1px solid var(--cinnabar);
  border-radius: var(--radius-m);
  font-size: .85rem;
  letter-spacing: .1em;
  transform: translateY(-180%);
  transition: transform .2s var(--ease);
}

.skip-link:focus { transform: translateY(0); }

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

.site-header :focus-visible,
.site-footer :focus-visible { outline-color: var(--gold); }

/* ---------- 5. 页头：中轴轨道 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 70;
  display: flex;
  flex-direction: column;
  background: var(--ink-deep);
  color: var(--on-dark);
  border-bottom: 1px solid var(--line-invert-soft);
}

.header-axis { display: none; }

.site-header__inner {
  display: flex;
  flex-direction: column;
  min-height: 4.5rem;
  padding: .75rem var(--gutter);
}

.site-header__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: .7rem;
  min-width: 0;
}

.brand__mark {
  display: block;
  flex: 0 0 auto;
  width: .38rem;
  height: 2.1rem;
  border-radius: 1px;
  background: linear-gradient(180deg, var(--cinnabar) 0 44%, var(--gold) 44% 100%);
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: .12rem;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--on-dark);
  line-height: 1.2;
}

.brand__tagline {
  font-size: .66rem;
  letter-spacing: .16em;
  color: var(--on-dark-dim);
  white-space: nowrap;
  line-height: 1.3;
}

/* 抽屉按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-height: 2.75rem;
  padding: .4rem .8rem;
  border: 1px solid var(--line-invert);
  border-radius: var(--radius-m);
  color: var(--on-dark);
  font-size: .74rem;
  letter-spacing: .18em;
  transition: border-color .25s var(--ease), background-color .25s var(--ease);
}

.nav-toggle:hover { border-color: var(--gold); }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: .3rem;
  width: 1.05rem;
}

.nav-toggle__bar {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform .3s var(--ease);
}

.site-header[data-open] .nav-toggle__bar:nth-child(1) { transform: translateY(.4rem) rotate(45deg); }
.site-header[data-open] .nav-toggle__bar:nth-child(2) { transform: translateY(-.4rem) rotate(-45deg); }

.nav-toggle__label { line-height: 1; }

/* 导航（移动端 = 全屏抽屉） */
.site-nav {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  flex-direction: column;
  padding: 5.6rem var(--gutter) 2.5rem;
  background: var(--ink-deep);
  color: var(--on-dark);
  overflow-y: auto;
  transform: translateX(102%);
  visibility: hidden;
  transition: transform .4s var(--ease), visibility .4s var(--ease);
}

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

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

.site-nav__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: .9rem;
  padding: .62rem 0 .62rem .1rem;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.4vw, 1.24rem);
  letter-spacing: .08em;
  color: rgba(244, 239, 230, .74);
  border-bottom: 1px solid var(--line-invert-soft);
  transition: color .25s var(--ease), padding-left .25s var(--ease);
}

.site-nav__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--cinnabar);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .3s var(--ease);
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  color: var(--on-dark);
  padding-left: .95rem;
}

.site-nav__link:hover::before { transform: scaleY(1); }

.site-nav__link[aria-current="page"] {
  color: var(--on-dark);
  font-weight: 700;
  padding-left: .95rem;
}

.site-nav__link[aria-current="page"]::before { transform: scaleY(1); }

.site-nav__index {
  font-family: var(--font-num);
  font-size: .68rem;
  letter-spacing: .1em;
  color: rgba(244, 239, 230, .42);
  transition: color .25s var(--ease);
}

.site-nav__link[aria-current="page"] .site-nav__index,
.site-nav__link:hover .site-nav__index { color: var(--gold); }

.site-nav__label { flex: 1 1 auto; }

.site-nav__tools {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: .5rem;
  margin-top: 1.75rem;
}

.nav-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: .8rem 1.2rem;
  border-radius: var(--radius-m);
  background: var(--cinnabar);
  color: #fff;
  font-size: .92rem;
  letter-spacing: .14em;
  transition: background-color .25s var(--ease), transform .25s var(--ease);
}

.nav-action:hover {
  background: var(--cinnabar-deep);
  transform: translateY(-1px);
}

.nav-utility {
  display: flex;
  align-items: center;
  gap: .55rem;
  width: 100%;
  padding: .3rem 0;
  font-size: .78rem;
  letter-spacing: .16em;
  color: rgba(244, 239, 230, .62);
  text-align: left;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.nav-utility::before {
  content: "";
  flex: 0 0 auto;
  width: .34rem;
  height: .34rem;
  border-radius: 50%;
  background: var(--gold);
  opacity: .75;
}

.nav-utility:hover,
.nav-utility:focus-visible {
  color: var(--on-dark);
  border-bottom-color: var(--line-invert);
}

/* 站内检索面板 */
.search-panel {
  margin-top: 1.1rem;
  padding: .95rem;
  background: rgba(244, 239, 230, .05);
  border: 1px solid var(--line-invert);
  border-radius: var(--radius-m);
}

.search-panel__label {
  display: block;
  margin-bottom: .55rem;
  font-size: .68rem;
  letter-spacing: .2em;
  color: var(--gold);
}

.search-input {
  width: 100%;
  padding: .6rem .7rem;
  background: rgba(23, 20, 18, .55);
  border: 1px solid var(--line-invert);
  border-radius: var(--radius-s);
  color: var(--on-dark);
  font-size: .88rem;
}

.search-input::placeholder { color: rgba(244, 239, 230, .42); }

.search-input:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  border-color: var(--gold);
}

.search-results {
  display: flex;
  flex-direction: column;
  margin-top: .6rem;
  max-height: 13rem;
  overflow-y: auto;
}

.search-results__link {
  display: flex;
  justify-content: space-between;
  gap: .5rem;
  padding: .42rem .3rem;
  font-size: .84rem;
  letter-spacing: .06em;
  color: rgba(244, 239, 230, .76);
  border-bottom: 1px dashed var(--line-invert-soft);
  transition: color .2s var(--ease), background-color .2s var(--ease);
}

.search-results__link:hover,
.search-results__link:focus-visible {
  color: var(--on-dark);
  background: rgba(244, 239, 230, .07);
}

.search-results__empty {
  padding: .5rem .3rem 0;
  font-size: .76rem;
  line-height: 1.7;
  color: rgba(244, 239, 230, .55);
}

/* 滚动进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: rgba(244, 239, 230, .12);
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--cinnabar), var(--gold));
  transform: scaleX(var(--progress, 0));
  transform-origin: left center;
}

/* ---------- 6. 桌面端：轨道化页头 ---------- */
@media (min-width: 1080px) {
  .site-header {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--rail-w);
    border-bottom: 0;
    border-right: 1px solid rgba(244, 239, 230, .07);
  }

  .header-axis {
    display: block;
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(196, 154, 74, .28), transparent);
    pointer-events: none;
  }

  .site-header__inner {
    height: 100%;
    padding: 2.2rem 1.9rem 1.6rem;
    overflow-y: auto;
    scrollbar-width: thin;
  }

  .site-header__top { display: block; }

  .nav-toggle { display: none; }

  .brand__name { font-size: 1.2rem; }

  .site-nav {
    position: static;
    inset: auto;
    z-index: auto;
    flex: 1 1 auto;
    margin-top: 2.4rem;
    padding: 0;
    background: transparent;
    overflow: visible;
    transform: none;
    visibility: visible;
    transition: none;
  }

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

  .site-nav__link { font-size: 1.13rem; padding-block: .55rem; }

  .site-nav__tools {
    margin-top: auto;
    padding-top: 1.9rem;
    border-top: 1px solid var(--line-invert-soft);
  }

  .search-panel { margin-top: .9rem; }

  .search-results { max-height: 9rem; }

  .scroll-progress {
    left: auto;
    right: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    height: auto;
  }

  .scroll-progress__bar {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, var(--cinnabar), var(--gold));
    transform: scaleY(var(--progress, 0));
    transform-origin: center top;
  }
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  margin-top: clamp(3rem, 7vw, 6.5rem);
  background: var(--ink-deep);
  color: rgba(244, 239, 230, .76);
}

.site-footer::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg,
    var(--cinnabar) 0 16%,
    var(--gold) 16% 24%,
    rgba(244, 239, 230, .14) 24% 100%);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
  max-width: var(--page-max);
  margin-inline: auto;
  padding: clamp(2.5rem, 5vw, 4rem) var(--gutter) clamp(1.75rem, 3vw, 2.5rem);
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .6rem;
}

.footer-mark {
  display: block;
  width: 1.9rem;
  height: .28rem;
  background: var(--cinnabar);
  margin-bottom: .35rem;
}

.site-footer__name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--on-dark);
  line-height: 1.3;
}

.site-footer__note {
  font-size: .82rem;
  line-height: 1.8;
  letter-spacing: .06em;
  color: rgba(244, 239, 230, .56);
  max-width: 22em;
}

.site-footer__action { margin-top: .55rem; }

.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
  gap: 1.6rem 1.25rem;
}

.footer-col { min-width: 0; }

.footer-col__title {
  font-family: var(--font-display);
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--gold);
  padding-bottom: .5rem;
  margin-bottom: .85rem;
  border-bottom: 1px solid var(--line-invert-soft);
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: .3rem;
}

.footer-col__link {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .18rem 0;
  font-size: .87rem;
  letter-spacing: .05em;
  color: rgba(244, 239, 230, .72);
  transition: color .25s var(--ease);
}

.footer-col__link::before {
  content: "";
  flex: 0 0 auto;
  width: .35rem;
  height: 1px;
  background: var(--cinnabar);
  transition: width .28s var(--ease), background-color .25s var(--ease);
}

.footer-col__link:hover,
.footer-col__link:focus-visible { color: var(--on-dark); }

.footer-col__link:hover::before {
  width: .95rem;
  background: var(--gold);
}

.site-footer__contact {
  display: flex;
  flex-direction: column;
  gap: .45rem;
  font-size: .85rem;
}

.contact-line {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  line-height: 1.7;
}

.contact-line__key {
  flex: 0 0 auto;
  min-width: 2.6rem;
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--gold);
}

.contact-line__value {
  color: rgba(244, 239, 230, .82);
  word-break: break-word;
}

.contact-line--note .contact-line__value { color: rgba(244, 239, 230, .6); }

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .75rem 1.5rem;
  max-width: var(--page-max);
  margin-inline: auto;
  padding: 1rem var(--gutter) 1.5rem;
  border-top: 1px solid var(--line-invert-soft);
}

.site-footer__legal-text {
  font-size: .75rem;
  letter-spacing: .08em;
  color: rgba(244, 239, 230, .5);
}

.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 65;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .62rem .95rem;
  border-radius: 999px;
  background: var(--ink-deep);
  color: var(--on-dark);
  border: 1px solid var(--line-invert);
  font-size: .74rem;
  letter-spacing: .16em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(.7rem);
  box-shadow: 0 14px 34px -22px rgba(23, 20, 18, .9);
  transition: opacity .3s var(--ease), transform .3s var(--ease),
              visibility .3s var(--ease), background-color .25s var(--ease);
}

.to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
}

/* 页脚断点 */
@media (min-width: 720px) {
  .site-footer__inner { grid-template-columns: 1fr 1fr; }
  .site-footer__brand { grid-column: 1; }
  .site-footer__contact { grid-column: 2; }
  .site-footer__cols { grid-column: 1 / -1; }
}

@media (min-width: 1080px) {
  .site-footer__inner { grid-template-columns: 1.15fr 1.6fr 1fr; }
  .site-footer__brand { grid-column: 1; }
  .site-footer__cols { grid-column: 2; }
  .site-footer__contact { grid-column: 3; }
}

/* ---------- 8. 通用版式容器 ---------- */
.container {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(2.5rem, 6vw, 5rem); }

.section--tight { padding-block: clamp(1.75rem, 4vw, 3rem); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-size: .7rem;
  letter-spacing: .26em;
  color: var(--cinnabar);
}

.eyebrow::before {
  content: "";
  width: .8rem;
  height: 1px;
  background: currentColor;
}

.page-title {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: .02em;
}

.page-lede {
  max-width: 36em;
  font-size: clamp(1rem, .5vw + .9rem, 1.12rem);
  line-height: 1.85;
  color: var(--slate);
}

.display-num {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--cinnabar);
}

.rule {
  height: 1px;
  border: 0;
  background: var(--line);
}

.axis-line {
  width: 1px;
  align-self: stretch;
  background: linear-gradient(180deg, var(--cinnabar), rgba(178, 58, 42, 0));
}

.cut-corner {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 2.5rem), calc(100% - 2.5rem) 100%, 0 100%);
}

/* 正文长文 */
.prose { max-width: 38em; }

.prose > * + * { margin-top: 1.05em; }

.prose h2 {
  font-size: clamp(1.35rem, 2.4vw, 1.8rem);
  margin-top: 2em;
  padding-top: .8em;
  border-top: 1px solid var(--line);
}

.prose h3 { font-size: 1.15rem; margin-top: 1.6em; }

.prose ul li {
  position: relative;
  padding-left: 1.15rem;
}

.prose ul li + li { margin-top: .35em; }

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: .5rem;
  height: 1px;
  background: var(--cinnabar);
}

.prose a {
  color: var(--cinnabar);
  border-bottom: 1px solid currentColor;
}

.prose blockquote {
  padding-left: 1.2rem;
  border-left: 2px solid var(--cinnabar);
  font-family: var(--font-display);
  font-size: 1.08rem;
  color: var(--ink-deep);
}

/* ---------- 9. 按钮与链接 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 2.85rem;
  padding: .72rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--radius-m);
  font-size: .9rem;
  letter-spacing: .12em;
  transition: background-color .25s var(--ease), color .25s var(--ease),
              border-color .25s var(--ease), transform .25s var(--ease);
}

.btn--solid { background: var(--cinnabar); color: #fff; }
.btn--solid:hover { background: var(--cinnabar-deep); transform: translateY(-1px); }

.btn--outline { border-color: var(--line-strong); color: var(--ink); }
.btn--outline:hover { border-color: var(--cinnabar); color: var(--cinnabar); }

.btn--quiet { background: var(--ink); color: var(--paper); }
.btn--quiet:hover { background: #000; }

.link-underline {
  position: relative;
  display: inline-block;
  padding-bottom: 2px;
}

.link-underline::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .3s var(--ease);
}

.link-underline:hover::after,
.link-underline:focus-visible::after { transform: scaleX(1); }

/* ---------- 10. 基础组件 ---------- */
.grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.25rem);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); }
.grid--split { grid-template-columns: 1fr; }

@media (min-width: 900px) {
  .grid--split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(2rem, 5vw, 4rem);
  }
}

.card {
  padding: clamp(1.2rem, 2.5vw, 2rem);
  background: var(--paper-lift);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-soft);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .16rem .6rem;
  border-radius: 999px;
  font-size: .68rem;
  letter-spacing: .14em;
  background: var(--mist);
  color: var(--ink-deep);
}

.tag--red { background: rgba(178, 58, 42, .12); color: var(--cinnabar-deep); }
.tag--gold { background: rgba(196, 154, 74, .2); color: #7a5c1f; }

.stat-row {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  grid-template-columns: repeat(auto-fit, minmax(7.5rem, 1fr));
}

.stat__value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.1rem);
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
}

.stat__label {
  margin-top: .45rem;
  font-size: .76rem;
  letter-spacing: .16em;
  color: var(--index-gray);
}

/* 图片容器基础规则 */
.figure { margin: 0; }

.figure__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--mist);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-l) var(--radius-l) var(--radius-l) 0;
}

.figure__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s var(--ease);
}

.figure:hover .figure__img { transform: scale(1.02); }

.figure__caption {
  margin-top: .7rem;
  font-size: .78rem;
  letter-spacing: .06em;
  line-height: 1.7;
  color: var(--index-gray);
}

.figure--portrait .figure__media { aspect-ratio: 3 / 4; }
.figure--wide .figure__media { aspect-ratio: 16 / 9; }

.figure--clip .figure__media {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 88%);
  border-radius: 0;
  border: 0;
}

/* 面包屑 */
.breadcrumb {
  padding-block: 1.05rem;
  border-bottom: 1px solid var(--line-soft);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--index-gray);
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
}

.breadcrumb__link {
  color: var(--slate);
  transition: color .2s var(--ease);
}

.breadcrumb__link:hover { color: var(--cinnabar); }

.breadcrumb__sep { color: var(--index-gray); }

.breadcrumb__current { color: var(--ink); }

/* ---------- 11. 减少动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  html { scroll-behavior: auto; }

  .figure:hover .figure__img { transform: none; }
}

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