/* ==========================================================================
   米兰体育 · 城市看台简中官网 — /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 页头 / 页脚 / 通用组件
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

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

ul[class],
ol[class] { list-style: none; }

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

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

button {
  background: none;
  border: 0;
  cursor: pointer;
}

a { color: inherit; }

table {
  border-collapse: collapse;
  width: 100%;
}

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩体系 */
  --obsidian: #0E0D0F;
  --obsidian-soft: #16151A;
  --stand-paper: #EFE6D6;
  --stand-paper-deep: #E2D6C1;
  --milan-red: #C8102E;
  --deep-brown: #3A1512;
  --lapis: #1F3FA0;
  --ochre: #C08A2E;
  --turquoise: #1E9E86;
  --snow: #F7F4ED;
  --slate: #6B6A70;
  --ember: #E4572E;

  /* 语义色 */
  --bg: var(--obsidian);
  --fg: var(--snow);
  --line: rgba(239, 230, 214, 0.16);
  --line-strong: rgba(239, 230, 214, 0.34);
  --fg-mute: rgba(247, 244, 237, 0.66);

  /* 尺寸 */
  --wrap: 1280px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 3px;
  --header-h: 72px;

  /* 字体 */
  --font-head: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  /* 动效 */
  --ease-stand: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ---------- 3. 中文排版基底 ---------- */
html { background: var(--obsidian); }

body {
  background-color: var(--obsidian);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* 印刷颗粒质感（不参与交互） */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 900;
  pointer-events: none;
  opacity: 0.035;
  background-image: radial-gradient(currentColor 0.5px, transparent 0.6px);
  background-size: 4px 4px;
  color: #ffffff;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  text-wrap: balance;
}

h1 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.25rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }
h4 { font-size: 1.02rem; letter-spacing: -0.01em; }

p { text-wrap: pretty; }

code, kbd, samp, .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}

::selection {
  background: var(--milan-red);
  color: #ffffff;
}

/* ---------- 4. 焦点与可访问性 ---------- */
:focus-visible {
  outline: 2px solid var(--ochre);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 300;
  transform: translateY(-140%);
  background: var(--ochre);
  color: var(--obsidian);
  font-weight: 800;
  font-size: 0.9rem;
  padding: 0.65rem 1.1rem;
  text-decoration: none;
  transition: transform 180ms var(--ease-stand);
}

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

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

/* ---------- 5. 布局工具 ---------- */
.wrap {
  width: min(var(--wrap), 100% - (var(--gutter) * 2));
  margin-inline: auto;
}

.layout-stand {
  display: grid;
  grid-template-columns: minmax(112px, 164px) minmax(0, 1fr);
  gap: clamp(1.25rem, 4vw, 3.5rem);
  align-items: start;
}

.grid {
  display: grid;
  gap: clamp(1rem, 2.5vw, 2rem);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--asym { grid-template-columns: minmax(0, 1fr) minmax(0, 2.2fr); }

.stack {
  display: flex;
  flex-direction: column;
  gap: clamp(0.9rem, 2vw, 1.5rem);
}

/* ---------- 6. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--obsidian);
  border-bottom: 1px solid var(--line);
  isolation: isolate;
}

.site-header__inner {
  width: min(var(--wrap), 100% - (var(--gutter) * 2));
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem 1.4rem;
  min-height: var(--header-h);
  padding-block: 0.55rem;
}

.scroll-meter {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--milan-red);
  transform: scaleX(0);
  transform-origin: left center;
  display: block;
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 0;
}

.brand__link {
  display: flex;
  flex-direction: column;
  line-height: 1.16;
  text-decoration: none;
  color: inherit;
}

.brand__mark {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.brand__sub {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: rgba(247, 244, 237, 0.56);
}

.brand__stand {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  padding: 0.14rem 0.42rem;
  color: var(--milan-red);
  border: 1px solid rgba(200, 16, 46, 0.55);
  border-radius: 2px;
  white-space: nowrap;
}

/* 移动端开关 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--stand-paper);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.nav-toggle__bars {
  position: relative;
  display: inline-block;
  width: 18px;
  height: 2px;
  background: currentColor;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

/* 主导航 */
.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.1rem;
}

.site-nav__list a {
  display: block;
  padding: 0.5rem 0.72rem;
  font-size: 0.9rem;
  color: var(--stand-paper);
  opacity: 0.76;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: opacity 180ms var(--ease-stand), color 180ms var(--ease-stand), border-color 180ms var(--ease-stand);
}

.site-nav__list a:hover,
.site-nav__list a:focus-visible {
  opacity: 1;
  color: #ffffff;
}

.site-nav__list a[aria-current="page"] {
  opacity: 1;
  color: #ffffff;
  border-bottom-color: var(--milan-red);
}

/* 页头工具区 */
.header-tools {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.refresh-badge {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.62rem;
  color: var(--ember);
  border: 1px solid var(--ember);
  border-radius: 999px;
  white-space: nowrap;
}

.refresh-badge__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ember);
  flex: none;
}

.refresh-badge::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  border: 1px solid transparent;
  border-top-color: var(--ember);
  animation: badge-sweep 120s linear infinite;
  pointer-events: none;
}

@keyframes badge-sweep {
  to { transform: rotate(360deg); }
}

.refresh-badge__note {
  display: none;
  position: absolute;
  top: calc(100% + 0.55rem);
  right: 0;
  z-index: 90;
  width: 250px;
  padding: 0.65rem 0.75rem;
  background: var(--deep-brown);
  color: var(--stand-paper);
  border: 1px solid var(--ochre);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.76rem;
  line-height: 1.6;
  letter-spacing: 0.01em;
  text-align: left;
  white-space: normal;
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.45);
}

.refresh-badge:hover .refresh-badge__note,
.refresh-badge:focus-visible .refresh-badge__note,
.refresh-badge:focus-within .refresh-badge__note {
  display: block;
}

.quick-link {
  display: inline-block;
  padding: 0.4rem 0.72rem;
  font-size: 0.8rem;
  color: var(--stand-paper);
  text-decoration: none;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  white-space: nowrap;
  transition: background-color 180ms var(--ease-stand), border-color 180ms var(--ease-stand), color 180ms var(--ease-stand);
}

.quick-link:hover,
.quick-link:focus-visible {
  background: var(--milan-red);
  border-color: var(--milan-red);
  color: #ffffff;
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  margin-top: clamp(3.5rem, 9vw, 7rem);
  background: var(--deep-brown);
  color: var(--stand-paper);
  border-top: 3px solid var(--milan-red);
}

.site-footer__inner {
  width: min(var(--wrap), 100% - (var(--gutter) * 2));
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2.1fr) minmax(0, 1.1fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
  padding-block: clamp(2.5rem, 6vw, 4.25rem) clamp(1.75rem, 4vw, 2.75rem);
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.7rem;
}

.site-footer .brand__mark { color: var(--stand-paper); }
.site-footer .brand__sub { color: rgba(239, 230, 214, 0.6); }

.site-footer__meta {
  font-size: 0.8rem;
  line-height: 1.7;
  color: rgba(239, 230, 214, 0.7);
  max-width: 22rem;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2.25rem);
}

.footer-col__title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--ochre);
  margin-bottom: 0.85rem;
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-col__list a,
.legal-links a {
  color: rgba(239, 230, 214, 0.82);
  text-decoration: none;
  font-size: 0.88rem;
  line-height: 1.55;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease-stand), border-color 180ms var(--ease-stand);
}

.footer-col__list a:hover,
.footer-col__list a:focus-visible,
.legal-links a:hover,
.legal-links a:focus-visible {
  color: #ffffff;
  border-bottom-color: var(--milan-red);
}

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

.footer-contact__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}

.footer-contact__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.86rem;
  line-height: 1.6;
}

.footer-contact__key {
  flex: none;
  min-width: 2.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--ochre);
  padding-top: 0.16rem;
}

.footer-contact__val {
  color: rgba(239, 230, 214, 0.9);
  word-break: break-all;
}

.footer-contact__note {
  font-size: 0.78rem;
  line-height: 1.7;
  color: rgba(239, 230, 214, 0.6);
  max-width: 26rem;
}

.site-footer__base {
  width: min(var(--wrap), 100% - (var(--gutter) * 2));
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1.5rem;
  padding-block: 1.15rem 2rem;
  border-top: 1px solid rgba(239, 230, 214, 0.18);
  font-size: 0.78rem;
  color: rgba(239, 230, 214, 0.72);
}

.site-footer__icp {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.1rem;
  margin-left: auto;
}

.legal-links a { font-size: 0.78rem; }

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.66rem 1.15rem;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: background-color 180ms var(--ease-stand), color 180ms var(--ease-stand), border-color 180ms var(--ease-stand), transform 180ms var(--ease-stand);
}

.btn--primary {
  background: var(--milan-red);
  color: #ffffff;
  border-color: var(--milan-red);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: #a90d26;
  border-color: #a90d26;
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--snow);
  border-color: var(--line-strong);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--ochre);
  color: var(--ochre);
}

.btn--quiet {
  background: var(--stand-paper);
  color: var(--deep-brown);
  border-color: var(--deep-brown);
}

.btn--quiet:hover,
.btn--quiet:focus-visible {
  background: var(--deep-brown);
  color: var(--stand-paper);
}

/* ---------- 9. 叠层画板 ---------- */
.panel {
  position: relative;
  padding: clamp(1.2rem, 3vw, 2.5rem);
  background: var(--stand-paper);
  color: var(--deep-brown);
  border: 1px solid var(--deep-brown);
  border-radius: var(--radius);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.42);
}

.panel h1, .panel h2, .panel h3, .panel h4 { color: var(--deep-brown); }
.panel .prose p { color: rgba(58, 21, 18, 0.86); }

.panel--dark {
  background: var(--obsidian-soft);
  color: var(--snow);
  border-color: var(--line-strong);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.55);
}

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

.panel--lapis { border-left: 6px solid var(--lapis); }
.panel--ochre { border-left: 6px solid var(--ochre); }
.panel--turquoise { border-left: 6px solid var(--turquoise); }
.panel--ember { border-left: 6px solid var(--ember); }
.panel--red { border-left: 6px solid var(--milan-red); }

/* 画板错位堆叠 */
.panel--offset-r { transform: translateY(24px); }
.panel--offset-l { transform: translateY(-24px); }

.panel__label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  padding: 0.22rem 0.6rem;
  background: var(--deep-brown);
  color: var(--stand-paper);
  border-radius: 2px;
  margin-bottom: 1rem;
}

.stand-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  padding: 0.24rem 0.6rem;
  background: var(--milan-red);
  color: #ffffff;
  border-radius: 2px;
}

.stand-tab--paper {
  background: var(--stand-paper);
  color: var(--deep-brown);
}

/* 超大章节编号 */
.section-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(3.75rem, 12vw, 8.75rem);
  line-height: 0.82;
  letter-spacing: -0.05em;
  color: var(--milan-red);
  font-variant-numeric: tabular-nums;
}

.section-num--lapis { color: var(--lapis); }
.section-num--ochre { color: var(--ochre); }
.section-num--turquoise { color: var(--turquoise); }

/* 数据焦点 */
.stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.stat__figure {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 7vw, 4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--snow);
  font-variant-numeric: tabular-nums;
}

.stat__figure--red { color: var(--milan-red); }
.stat__figure--turquoise { color: var(--turquoise); }
.stat__figure--ochre { color: var(--ochre); }

.stat__label {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--fg-mute);
}

/* 数据条 */
.bar-track {
  height: 10px;
  background: rgba(239, 230, 214, 0.14);
  border-radius: 1px;
  overflow: hidden;
}

.bar-fill {
  display: block;
  height: 100%;
  background: var(--turquoise);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 400ms var(--ease-stand);
}

.is-inview .bar-fill {
  transform: scaleX(var(--bar-scale, 1));
}

/* ---------- 10. 分段切换 ---------- */
.tabs {
  display: flex;
  flex-direction: column;
  gap: clamp(1rem, 2.5vw, 1.75rem);
}

.segmented {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 3px;
  padding: 3px;
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  align-self: flex-start;
}

.panel .segmented {
  background: rgba(58, 21, 18, 0.08);
  border-color: rgba(58, 21, 18, 0.34);
}

.segmented__btn {
  padding: 0.45rem 1rem;
  font-family: var(--font-head);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--fg-mute);
  background: transparent;
  border-radius: 2px;
  transition: background-color 180ms var(--ease-stand), color 180ms var(--ease-stand);
}

.panel .segmented__btn { color: rgba(58, 21, 18, 0.68); }

.segmented__btn:hover { color: var(--snow); }
.panel .segmented__btn:hover { color: var(--deep-brown); }

.segmented__btn[aria-selected="true"] {
  background: var(--milan-red);
  color: #ffffff;
}

.tabs__panels { min-height: 1px; }

.tabs__panel[hidden] { display: none; }

/* ---------- 11. 面包屑 / 正文 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--fg-mute);
  margin-bottom: 1.1rem;
}

.breadcrumb__item {
  color: var(--fg-mute);
  text-decoration: none;
}

.breadcrumb__item:hover,
.breadcrumb__item:focus-visible { color: var(--ochre); }

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--slate);
}

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

.prose {
  max-width: 42rem;
}

.prose p {
  max-width: 38rem;
  margin-bottom: 1.15em;
  color: rgba(247, 244, 237, 0.86);
}

.prose p:last-child { margin-bottom: 0; }

.prose h2, .prose h3 { margin-block: 1.6em 0.7em; }
.prose h2:first-child, .prose h3:first-child { margin-top: 0; }

.prose ul, .prose ol {
  max-width: 38rem;
  margin-bottom: 1.15em;
  padding-left: 1.15rem;
  list-style: disc;
}

.prose ol { list-style: decimal; }

.prose li { margin-bottom: 0.4em; }

.prose a {
  color: var(--ochre);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose strong { color: var(--snow); font-weight: 800; }

.panel .prose strong { color: var(--deep-brown); }
.panel .prose a { color: var(--milan-red); }

/* ---------- 12. 图片容器（页面阶段填充） ---------- */
.figure {
  position: relative;
  margin: 0;
  background: #141317;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.figure__media {
  aspect-ratio: 16 / 9;
  background-color: #191721;
  background-image:
    linear-gradient(135deg, rgba(31, 63, 160, 0.32), transparent 58%),
    linear-gradient(315deg, rgba(192, 138, 46, 0.22), transparent 60%);
  background-size: cover;
  background-position: center;
}

.figure__media--wide { aspect-ratio: 21 / 9; }
.figure__media--tall { aspect-ratio: 4 / 5; }
.figure__media--square { aspect-ratio: 1 / 1; }

.figure__media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure__caption {
  padding: 0.6rem 0.85rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--fg-mute);
}

.panel .figure { border-color: rgba(58, 21, 18, 0.28); }
.panel .figure__caption {
  border-top-color: rgba(58, 21, 18, 0.2);
  color: rgba(58, 21, 18, 0.7);
}

/* ---------- 13. 看台时间轴 ---------- */
.stand-timeline {
  position: sticky;
  top: calc(var(--header-h) + 1.5rem);
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.stand-timeline__item {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.42rem 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: rgba(247, 244, 237, 0.52);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 180ms var(--ease-stand), border-color 180ms var(--ease-stand), background-color 180ms var(--ease-stand);
}

.stand-timeline__item:hover,
.stand-timeline__item:focus-visible {
  color: #ffffff;
  border-left-color: var(--ochre);
}

.stand-timeline__item[aria-current="true"],
.stand-timeline__item[aria-current="page"] {
  color: var(--snow);
  border-left-color: var(--milan-red);
  background: rgba(200, 16, 46, 0.14);
}

/* ---------- 14. 显现动效 ---------- */
.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(10px);
}

.js-reveal [data-reveal].is-inview {
  opacity: 1;
  transform: none;
  transition: opacity 260ms var(--ease-stand), transform 260ms var(--ease-stand);
}

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1080px) {
  .site-footer__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  :root { --header-h: 64px; }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .header-tools {
    order: 3;
    flex-basis: 100%;
    flex-wrap: wrap;
  }

  .site-nav {
    order: 4;
    flex-basis: 100%;
    display: none;
    padding-bottom: 0.6rem;
  }

  .site-nav[data-open] {
    display: block;
  }

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

  .site-nav__list a {
    padding: 0.68rem 0.5rem;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--line);
    border-left: 2px solid transparent;
  }

  .site-nav__list a[aria-current="page"] {
    border-bottom-color: var(--line);
    border-left-color: var(--milan-red);
    background: rgba(200, 16, 46, 0.12);
  }

  .refresh-badge__note {
    right: auto;
    left: 0;
    width: min(250px, 72vw);
  }

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

  .stand-timeline {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.25rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--line);
    margin-bottom: 0.75rem;
  }

  .stand-timeline__item {
    border-left: 0;
    border-bottom: 2px solid transparent;
    padding: 0.35rem 0.55rem;
  }

  .stand-timeline__item[aria-current="true"],
  .stand-timeline__item[aria-current="page"] {
    border-left-color: transparent;
    border-bottom-color: var(--milan-red);
  }

  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .panel--offset-r,
  .panel--offset-l { transform: none; }

  .grid--2,
  .grid--3,
  .grid--asym { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
  body { font-size: 16px; }

  .site-header__inner { gap: 0.55rem 0.9rem; }

  .brand__mark { font-size: 1rem; }
  .brand__sub { font-size: 0.64rem; letter-spacing: 0.14em; }

  .quick-link { flex: 1 1 auto; text-align: center; }

  .site-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .footer-nav { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; }
  .legal-links { margin-left: 0; }
  .site-footer__base { flex-direction: column; align-items: flex-start; }
}

/* ---------- 16. 减弱动效 ---------- */
@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;
  }

  .js-reveal [data-reveal],
  .js-reveal [data-reveal].is-inview {
    opacity: 1 !important;
    transform: none !important;
  }

  .bar-fill { transform: scaleX(var(--bar-scale, 1)) !important; }
}