/* ==========================================================
   九娱乐会馆 — 共享样式 /assets/site.css
   夜间会馆：深墨黑底 · 暖铜金骨架 · 朱砂红标记当前 · 青瓷绿标记状态
   ========================================================== */

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

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

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

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

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

button, input, select, textarea { font: inherit; color: inherit; }

a { color: inherit; text-decoration: none; }

b, strong { font-weight: 600; }

/* ---------- 2. Tokens ---------- */
:root {
  /* 墨色阶 */
  --ink-900: #0A0B0D;
  --ink-800: #111318;
  --ink-700: #1A1D23;
  --ink-600: #252A31;

  /* 强调色 */
  --copper: #C08A4A;
  --copper-lite: #E4BB82;
  --cinnabar: #B64032;
  --celadon: #7FA99B;
  --ivory: #F4EDE1;

  /* 透明度派生 */
  --copper-08: rgba(192, 138, 74, 0.08);
  --copper-16: rgba(192, 138, 74, 0.16);
  --copper-28: rgba(192, 138, 74, 0.28);
  --copper-45: rgba(192, 138, 74, 0.45);
  --copper-70: rgba(192, 138, 74, 0.70);
  --ivory-70: rgba(244, 237, 225, 0.70);
  --ivory-56: rgba(244, 237, 225, 0.56);
  --ivory-40: rgba(244, 237, 225, 0.40);
  --ivory-14: rgba(244, 237, 225, 0.14);

  /* 字体 */
  --font-display: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', 'SFMono-Regular', Consolas, 'Courier New', monospace;

  /* 度量 */
  --rail-w: 120px;
  --bar-h: 62px;
  --shell-max: 1280px;
  --gutter: clamp(18px, 4vw, 56px);

  /* 动效 */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 200ms;
}

/* ---------- 3. Base / 中文排版 ---------- */
body {
  background-color: var(--ink-900);
  background-image: radial-gradient(120% 78% at 88% -14%, rgba(192, 138, 74, 0.09), transparent 58%);
  background-repeat: no-repeat;
  color: var(--ivory);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

p { text-wrap: pretty; }

h1, h2, h3 { text-wrap: balance; }

::selection {
  background: rgba(192, 138, 74, 0.34);
  color: var(--ivory);
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--ink-900); }
::-webkit-scrollbar-thumb { background: #2c323a; border: 2px solid var(--ink-900); }
::-webkit-scrollbar-thumb:hover { background: var(--copper); }

/* ---------- 4. 无障碍 ---------- */
:where(a, button, [tabindex]):focus-visible {
  outline: 2px solid var(--copper-lite);
  outline-offset: 2px;
  border-radius: 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: calc(var(--rail-w) + 12px);
  z-index: 2000;
  padding: 0.7em 1.15em;
  background: var(--copper);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  transform: translateY(-220%);
  transition: transform var(--dur) var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--ivory);
  outline-offset: 2px;
}

/* ---------- 5. 布局容器与网格 ---------- */
.container {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow { max-width: 820px; }
.container--wide { max-width: 1480px; }

.section {
  position: relative;
  padding-block: clamp(44px, 6vw, 92px);
}

.section--tight { padding-block: clamp(28px, 3.5vw, 54px); }

.section--wide {
  background: var(--ink-800);
  border-block: 1px solid var(--ink-600);
}

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

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

/* ---------- 6. 排版组件 ---------- */
.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  line-height: 1.6;
  color: var(--copper-70);
  text-transform: uppercase;
}

.h-display {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(48px, 7vw, 104px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  color: var(--ivory);
}

.h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--ivory);
}

.h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 2.8vw, 32px);
  line-height: 1.32;
  color: var(--ivory);
}

.lead {
  font-size: clamp(16px, 1.3vw, 18px);
  line-height: 1.8;
  color: var(--ivory-70);
}

.muted { color: var(--ivory-56); }

.u-mono {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  padding: 0.85em 1.55em;
  border: 1px solid var(--copper-45);
  background: var(--copper-08);
  color: var(--copper-lite);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.2;
  text-align: center;
  cursor: pointer;
  transition: background-color 160ms var(--ease), color 160ms var(--ease),
              border-color 160ms var(--ease), transform 160ms var(--ease);
}

.btn:hover {
  background: var(--copper-16);
  border-color: var(--copper);
  color: var(--ivory);
}

.btn:active { transform: translateY(1px); }

.btn--copper {
  background: var(--copper);
  border-color: var(--copper);
  color: var(--ink-900);
}

.btn--copper:hover {
  background: var(--copper-lite);
  border-color: var(--copper-lite);
  color: var(--ink-900);
}

.btn--ghost {
  background: transparent;
  border-color: var(--ink-600);
  color: var(--ivory);
}

.btn--ghost:hover {
  background: var(--copper-08);
  border-color: var(--copper);
  color: var(--copper-lite);
}

/* ---------- 8. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  padding: 0.3em 0.75em;
  border: 1px solid var(--copper-28);
  background: var(--copper-08);
  color: var(--copper-lite);
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  line-height: 1.5;
  white-space: nowrap;
}

.tag::before {
  content: "";
  width: 5px;
  height: 5px;
  background: currentColor;
  flex: 0 0 auto;
}

.tag--ok {
  border-color: rgba(127, 169, 155, 0.5);
  background: rgba(127, 169, 155, 0.12);
  color: var(--celadon);
}

.tag--alert {
  border-color: rgba(182, 64, 50, 0.55);
  background: rgba(182, 64, 50, 0.16);
  color: #E08B7D;
}

/* ---------- 9. 面板 ---------- */
.panel {
  position: relative;
  padding: clamp(20px, 2.6vw, 34px);
  background: var(--ink-700);
  border: 1px solid var(--ink-600);
}

.panel--copper { border-color: var(--copper-28); }

/* ---------- 10. 面包屑 ---------- */
.crumbs {
  padding-block: 14px;
  border-bottom: 1px solid var(--ink-600);
}

.crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ivory-40);
}

.crumbs__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--copper-45);
}

.crumbs__list a:hover { color: var(--copper-lite); }

.crumbs__list [aria-current="page"] { color: var(--ivory); }

/* ---------- 11. 图片容器基础 ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: var(--ink-700);
  border: 1px solid var(--copper-28);
  aspect-ratio: 16 / 10;
}

.media-frame > img,
.media-frame > picture,
.media-frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media-frame > img,
.media-frame > picture > img {
  filter: saturate(0.82) contrast(1.06) brightness(0.9);
  transition: filter 260ms var(--ease), transform 260ms var(--ease);
}

.media-frame:hover > img,
.media-frame:hover > picture > img {
  filter: saturate(0.94) contrast(1.04) brightness(0.98);
  transform: scale(1.015);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(10, 11, 13, 0) 42%, rgba(10, 11, 13, 0.74) 100%);
}

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

.media-frame__tag {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 2;
  padding: 0.45em 0.8em;
  background: var(--ink-900);
  color: var(--copper-lite);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  border-right: 1px solid var(--copper-28);
  border-bottom: 1px solid var(--copper-28);
}

/* ==========================================================
   12. 头部 — 桌面端纵向轨道
   ========================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--rail-w);
  height: 100%;
  z-index: 900;
}

.rail {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 22px 0 20px;
  background-color: var(--ink-800);
  background-image: linear-gradient(180deg, rgba(192, 138, 74, 0.10), transparent 26%, transparent 72%, rgba(127, 169, 155, 0.06));
  border-right: 1px solid var(--ink-600);
  overflow: hidden;
}

/* 品牌 */
.rail__top {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: 0 12px 20px;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 9px;
}

.brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--copper);
  color: var(--copper-lite);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.brand__mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px solid rgba(192, 138, 74, 0.26);
  pointer-events: none;
}

.brand:hover .brand__mark {
  color: var(--ivory);
  border-color: var(--copper-lite);
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.35;
  letter-spacing: 0.14em;
  color: var(--ivory);
}

.rail__sig {
  font-family: var(--font-mono);
  font-size: 9.5px;
  line-height: 1.65;
  letter-spacing: 0.1em;
  color: rgba(192, 138, 74, 0.62);
}

/* 导航 */
.site-nav {
  flex: 1 1 auto;
  min-height: 0;
  padding: 10px 0;
  border-top: 1px solid var(--ink-600);
  overflow-y: auto;
  scrollbar-width: thin;
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.site-nav__link {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 9px 12px 9px 15px;
  color: var(--ivory-56);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.site-nav__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: var(--cinnabar);
  opacity: 0;
  transform: scaleY(0.3);
  transform-origin: top center;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.site-nav__idx {
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  line-height: 1;
  color: rgba(192, 138, 74, 0.55);
  transition: color var(--dur) var(--ease);
}

.site-nav__label {
  font-size: 12.5px;
  line-height: 1.45;
  letter-spacing: 0.05em;
  word-break: break-word;
}

.site-nav__link:hover {
  background: var(--ink-700);
  color: var(--ivory);
}

.site-nav__link:hover::before {
  opacity: 0.42;
  transform: scaleY(1);
}

.site-nav__link[aria-current="page"] {
  background: rgba(192, 138, 74, 0.10);
  color: var(--ivory);
  font-weight: 600;
}

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

.site-nav__link[aria-current="page"] .site-nav__idx { color: var(--copper-lite); }

/* 轨道底部入口 */
.rail__foot {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px;
  margin-top: auto;
  border-top: 1px solid var(--ink-600);
}

.rail__cta {
  display: block;
  padding: 9px 4px;
  border: 1px solid var(--copper-45);
  background: var(--copper-08);
  color: var(--copper-lite);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.3;
  text-align: center;
  transition: background-color 160ms var(--ease), color 160ms var(--ease),
              border-color 160ms var(--ease);
}

.rail__cta:hover {
  background: var(--copper-16);
  border-color: var(--copper);
  color: var(--ivory);
}

.rail__cta--solid {
  background: var(--copper);
  border-color: var(--copper);
  color: var(--ink-900);
}

.rail__cta--solid:hover {
  background: var(--copper-lite);
  border-color: var(--copper-lite);
  color: var(--ink-900);
}

/* 阅读进度 */
.rail__progress {
  position: absolute;
  top: 0;
  right: -1px;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--copper-lite), var(--copper) 55%, var(--cinnabar));
  transform: scaleY(var(--p, 0));
  transform-origin: top center;
  transition: transform 90ms linear;
  pointer-events: none;
  z-index: 2;
}

/* 抽屉结构在桌面端透明化 */
.rail__drawer,
.rail__drawerInner { display: contents; }

/* 移动端按钮默认隐藏 */
.nav-toggle { display: none; }

/* ==========================================================
   13. 页脚
   ========================================================== */
.site-footer {
  position: relative;
  overflow: hidden;
  padding: clamp(48px, 7vw, 88px) var(--gutter) 0;
  background: var(--ink-900);
  border-top: 1px solid var(--ink-600);
}

.site-footer::before {
  content: "九";
  position: absolute;
  right: -1.5%;
  bottom: -26%;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(200px, 30vw, 420px);
  line-height: 1;
  color: rgba(192, 138, 74, 0.045);
  pointer-events: none;
  user-select: none;
}

.site-footer::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(90% 70% at 12% 0%, rgba(192, 138, 74, 0.07), transparent 62%);
}

.site-footer__inner {
  position: relative;
  z-index: 1;
  max-width: var(--shell-max);
  margin-inline: auto;
}

.site-footer__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--ink-600);
}

.site-footer__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 42px);
  line-height: 1.16;
  letter-spacing: 0.06em;
  color: var(--ivory);
}

.site-footer__line {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--copper-70);
}

.site-footer__action {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.site-footer__hint {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ivory-40);
}

.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: clamp(24px, 3.6vw, 52px);
  padding-block: clamp(30px, 4.6vw, 54px);
  border-bottom: 1px solid var(--ink-600);
}

.site-footer__title {
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ink-600);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  line-height: 1.5;
  color: var(--copper-70);
}

.site-footer__links li + li { margin-top: 2px; }

.site-footer__links a {
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ivory-56);
  transition: color 160ms var(--ease), transform 160ms var(--ease);
}

.site-footer__links a:hover {
  color: var(--copper-lite);
  transform: translateX(3px);
}

.site-footer__meta {
  display: grid;
  gap: 12px;
}

.site-footer__meta li {
  display: grid;
  gap: 3px;
}

.site-footer__key {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  line-height: 1.4;
  color: rgba(192, 138, 74, 0.62);
}

.site-footer__val {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ivory-70);
  word-break: break-word;
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 28px;
  padding: 22px 0 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.6;
  color: var(--ivory-40);
}

/* ==========================================================
   14. 桌面端整体偏移
   ========================================================== */
@media (min-width: 901px) {
  body { padding-left: var(--rail-w); }
}

/* ==========================================================
   15. 移动端 / 平板
   ========================================================== */
@media (max-width: 900px) {
  body {
    padding-left: 0;
    padding-top: var(--bar-h);
  }

  .skip-link {
    top: calc(var(--bar-h) + 10px);
    left: 12px;
  }

  .site-header {
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: auto;
    bottom: auto;
  }

  .rail {
    flex-direction: row;
    align-items: center;
    gap: 10px;
    height: var(--bar-h);
    padding: 0 14px;
    border-right: 0;
    border-bottom: 1px solid var(--ink-600);
    overflow: visible;
    transition: box-shadow 200ms var(--ease);
  }

  .site-header[data-scrolled="true"] .rail {
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.55);
  }

  .rail__top {
    flex-direction: row;
    align-items: center;
    gap: 8px;
    padding: 0;
  }

  .brand {
    flex-direction: row;
    align-items: center;
    gap: 9px;
  }

  .brand__mark {
    width: 30px;
    height: 30px;
    font-size: 15px;
  }

  .brand__mark::after { inset: 3px; }

  .brand__name {
    font-size: 13px;
    letter-spacing: 0.1em;
  }

  .rail__sig { display: none; }

  /* 抽屉按钮 */
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
    padding: 9px 11px;
    background: transparent;
    border: 1px solid var(--ink-600);
    color: var(--ivory);
    font-size: 12px;
    letter-spacing: 0.1em;
    line-height: 1;
    cursor: pointer;
    transition: border-color 160ms var(--ease), color 160ms var(--ease);
  }

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

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

  .nav-toggle__bars i {
    display: block;
    height: 1px;
    background: currentColor;
    transition: transform 200ms var(--ease);
  }

  .site-header[data-open] .nav-toggle__bars i:first-child {
    transform: translateY(2.5px) rotate(45deg);
  }

  .site-header[data-open] .nav-toggle__bars i:last-child {
    transform: translateY(-2.5px) rotate(-45deg);
  }

  /* 抽屉面板 */
  .rail__drawer {
    display: block;
    position: fixed;
    top: var(--bar-h);
    left: 0;
    right: 0;
    z-index: 899;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    background: var(--ink-800);
    border-bottom: 1px solid var(--ink-600);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.55);
    transition: max-height 240ms var(--ease), visibility 240ms var(--ease);
  }

  .site-header[data-open] .rail__drawer {
    max-height: calc(100vh - var(--bar-h));
    max-height: calc(100dvh - var(--bar-h));
    overflow-y: auto;
    visibility: visible;
  }

  .rail__drawerInner {
    display: block;
    padding-bottom: 6px;
  }

  .site-nav {
    flex: 0 1 auto;
    min-height: 0;
    padding: 6px 0 2px;
    border-top: 0;
    overflow: visible;
  }

  .site-nav__list {
    padding: 0 10px;
    gap: 0;
  }

  .site-nav__link {
    flex-direction: row;
    align-items: baseline;
    gap: 12px;
    padding: 14px 10px;
    border-bottom: 1px solid rgba(37, 42, 49, 0.9);
  }

  .site-nav__link::before {
    top: 12px;
    bottom: 12px;
  }

  .site-nav__idx { font-size: 10px; }

  .site-nav__label { font-size: 14.5px; }

  .rail__foot {
    flex-direction: row;
    gap: 10px;
    padding: 16px 20px 20px;
    border-top: 0;
    margin-top: 0;
  }

  .rail__cta {
    flex: 1 1 0;
    padding: 12px 6px;
    font-size: 13px;
  }

  /* 进度条转为横向 */
  .rail__progress {
    top: auto;
    bottom: -1px;
    right: 0;
    left: 0;
    width: 100%;
    height: 2px;
    transform: scaleX(var(--p, 0));
    transform-origin: left center;
    transition: transform 90ms linear;
  }

  .site-footer {
    padding-inline: clamp(18px, 5vw, 34px);
  }

  .site-footer__head {
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  .site-footer__legal {
    flex-direction: column;
    justify-content: flex-start;
  }

  .site-footer__cols {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================
   16. 减少动态效
   ========================================================== */
@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;
  }

  .media-frame:hover > img,
  .media-frame:hover > picture > img {
    transform: none;
  }
}