/* ============================================================
   乐发平台 · 全站共享样式 /assets/site.css
   非对称编辑部版式 + 框架式时间轴导航 + 展签语言
   ============================================================ */

:root {
  --c-red: #B8272C;
  --c-red-deep: #8A1B20;
  --c-cream: #FBF6EE;
  --c-paper: #F2E9DC;
  --c-ink: #17332B;
  --c-bamboo: #2F5D4E;
  --c-amber: #D9A24A;
  --c-clay: #C96A3E;
  --c-sand: #EFE0C4;
  --c-fog: #6B6259;
  --c-fog-light: rgba(251, 246, 238, 0.60);

  --line: rgba(23, 51, 43, 0.12);
  --line-strong: rgba(23, 51, 43, 0.30);
  --shadow-soft: 0 1px 0 rgba(23, 51, 43, 0.03), 0 10px 26px -20px rgba(23, 51, 43, 0.55);

  --rail-w: 244px;
  --topbar-h: 62px;
  --pad-x: 96px;

  --font-serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --fs-72: clamp(40px, 7vw, 72px);
  --fs-56: clamp(34px, 5.2vw, 56px);
  --fs-40: clamp(28px, 3.6vw, 40px);
  --fs-28: clamp(22px, 2.4vw, 28px);
  --fs-20: 20px;
  --fs-17: 17px;
  --fs-15: 15px;
  --fs-13: 13px;
}

@media (max-width: 1280px) {
  :root { --pad-x: 64px; }
}
@media (max-width: 1180px) {
  :root { --rail-w: 208px; }
}
@media (max-width: 980px) {
  :root { --pad-x: 28px; --rail-w: 0px; }
}
@media (max-width: 620px) {
  :root { --pad-x: 20px; }
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body, h1, h2, h3, h4, h5, p, figure, blockquote, ol, ul, dl, dd, dt { margin: 0; }
ol, ul { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; }
table { border-collapse: collapse; width: 100%; }

/* ---------- base ---------- */
body {
  background: var(--c-cream);
  color: var(--c-ink);
  font-family: var(--font-sans);
  font-size: var(--fs-17);
  font-weight: 400;
  line-height: 1.75;
  padding-left: var(--rail-w);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--c-red);
  color: var(--c-cream);
}

#main-content { scroll-margin-top: 24px; outline: none; display: block; }

/* ---------- focus ---------- */
:focus-visible {
  outline: 2px solid var(--c-amber);
  outline-offset: 2px;
  box-shadow: 0 0 0 1px var(--c-ink);
}
a:focus:not(:focus-visible),
button:focus:not(:focus-visible) { outline: none; }

/* ---------- 排版 ---------- */
.t-display,
.t-h1, .t-h2, .t-h3 {
  font-family: var(--font-serif);
  color: var(--c-ink);
  letter-spacing: -0.005em;
}
.t-display { font-size: var(--fs-72); font-weight: 700; line-height: 1.04; }
.t-h1 { font-size: var(--fs-56); font-weight: 700; line-height: 1.1; }
.t-h2 { font-size: var(--fs-40); font-weight: 600; line-height: 1.18; }
.t-h3 { font-size: var(--fs-28); font-weight: 600; line-height: 1.3; }
.t-h4 {
  font-family: var(--font-sans);
  font-size: var(--fs-20);
  font-weight: 500;
  line-height: 1.45;
}
.t-lede { font-size: var(--fs-20); line-height: 1.7; font-weight: 400; color: var(--c-ink); }
.t-body { font-size: var(--fs-17); line-height: 1.75; }
.t-sm { font-size: var(--fs-15); line-height: 1.7; }
.t-xs { font-size: var(--fs-13); line-height: 1.65; color: var(--c-fog); }

.mono-label,
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-fog);
}
.eyebrow { color: var(--c-bamboo); }

.rule { height: 1px; background: var(--line); border: 0; margin: 0; }
.rule--amber { background: linear-gradient(90deg, var(--c-amber), rgba(217, 162, 74, 0)); }

/* ---------- 容器与网格 ---------- */
.container {
  width: 100%;
  max-width: 1360px;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
  margin: 0;
}

.section { padding: 72px 0; }
.section--tight { padding: 44px 0; }
.section--paper { background: var(--c-paper); }
.section--deep { background: var(--c-ink); color: var(--c-cream); }
.section--deep .t-h2,
.section--deep .t-h3,
.section--deep .t-h4,
.section--deep .t-lede { color: var(--c-cream); }
.section--deep .t-xs,
.section--deep .mono-label { color: var(--c-fog-light); }

.grid { display: grid; gap: 24px; }
.grid--7-5 { grid-template-columns: 7fr 5fr; gap: 40px; }
.grid--5-7 { grid-template-columns: 5fr 7fr; gap: 40px; }
.grid--8-4 { grid-template-columns: 8fr 4fr; gap: 40px; }
.grid--9-3 { grid-template-columns: 9fr 3fr; gap: 40px; }

.aside-note {
  border-left: 2px solid var(--c-amber);
  padding-left: 16px;
  font-size: var(--fs-13);
  line-height: 1.75;
  color: var(--c-fog);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-family: var(--font-sans);
  font-size: var(--fs-15);
  font-weight: 500;
  line-height: 1.3;
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 0;
  transition: background-color 0.22s var(--ease), color 0.22s var(--ease),
    border-color 0.22s var(--ease), transform 0.22s var(--ease);
}
.btn--primary { background: var(--c-red); color: var(--c-cream); border-color: var(--c-red); }
.btn--primary:hover { background: var(--c-red-deep); border-color: var(--c-red-deep); transform: translateY(-1px); }
.btn--ghost { background: transparent; color: var(--c-ink); border-color: var(--line-strong); }
.btn--ghost:hover { color: var(--c-red); border-color: var(--c-red); transform: translateY(-1px); }
.btn--block { width: 100%; }
.btn--sm { padding: 8px 14px; font-size: var(--fs-13); }

/* ---------- 标签 ---------- */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 1px solid var(--line-strong);
  color: var(--c-bamboo);
}
.tag--clay { color: var(--c-clay); border-color: rgba(201, 106, 62, 0.45); background: rgba(201, 106, 62, 0.07); }
.tag--bamboo { color: var(--c-bamboo); border-color: rgba(47, 93, 78, 0.35); background: rgba(47, 93, 78, 0.06); }

/* ---------- 面包屑 ---------- */
.crumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-fog);
}
.crumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.crumbs li { display: flex; align-items: center; gap: 6px; }
.crumbs li + li::before { content: "/"; color: var(--c-fog); opacity: 0.55; }
.crumbs a { text-decoration: none; color: var(--c-bamboo); border-bottom: 1px solid transparent; transition: border-color 0.22s var(--ease); }
.crumbs a:hover { border-bottom-color: currentColor; }

/* ---------- 展签卡片 ---------- */
.exhibit {
  position: relative;
  background: var(--c-paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  padding: 22px 22px 20px;
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease),
    box-shadow 0.28s var(--ease), background-color 0.28s var(--ease);
}
.exhibit:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: var(--c-cream);
  box-shadow: 0 1px 0 rgba(23, 51, 43, 0.04), 0 16px 34px -22px rgba(23, 51, 43, 0.6);
}
.exhibit__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-amber);
  margin-bottom: 10px;
}
.exhibit__title {
  font-family: var(--font-serif);
  font-size: var(--fs-28);
  font-weight: 600;
  line-height: 1.32;
}
.exhibit__text { margin-top: 10px; font-size: var(--fs-15); line-height: 1.75; color: var(--c-fog); }
.exhibit__foot {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

/* ---------- 图片容器基础规则（页面阶段放置图片占位） ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(217, 162, 74, 0.20), rgba(184, 39, 44, 0.10)),
    var(--c-paper);
  border: 1px solid var(--line);
}
.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--4x3 { aspect-ratio: 4 / 3; }
.media--3x2 { aspect-ratio: 3 / 2; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }
.media--warm img { filter: saturate(0.92) contrast(0.98) sepia(0.06); }
.media__cap {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-fog);
}

/* ---------- 横向主题带 ---------- */
.strip { position: relative; }
.strip__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}
.strip__track {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 14px;
  scrollbar-width: thin;
}
.strip__track > * {
  flex: 0 0 clamp(240px, 30vw, 340px);
  scroll-snap-align: start;
}
.strip__nav { display: flex; gap: 8px; }
.strip__btn {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  background: transparent;
  transition: border-color 0.22s var(--ease), color 0.22s var(--ease), background-color 0.22s var(--ease);
}
.strip__btn:hover:not(:disabled) { border-color: var(--c-red); color: var(--c-red); }
.strip__btn:disabled { opacity: 0.32; cursor: not-allowed; }
.strip__dots { display: flex; gap: 7px; align-items: center; }
.strip__dots span,
.strip__dots > * {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--line-strong);
  display: inline-block;
  transition: background-color 0.22s var(--ease), transform 0.22s var(--ease);
}
.strip__dots [data-active] { background: var(--c-red); transform: scale(1.25); }

/* ---------- 滚动显现 ---------- */
@media (prefers-reduced-motion: no-preference) {
  .js [data-reveal] {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.32s ease-out, transform 0.32s ease-out;
  }
  .js [data-reveal].is-in { opacity: 1; transform: none; }
}

/* ============================================================
   共享头部：桌面端为左侧满高竖栏，移动端折叠为顶部横条
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 80;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #F5ECE0 0%, #F2E9DC 46%, #EEE3D2 100%);
  border-right: 1px solid var(--line);
  color: var(--c-ink);
}

/* 跳转链接 */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--c-ink);
  color: var(--c-cream);
  font-size: var(--fs-15);
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.22s var(--ease);
}
.skip-link:focus-visible { transform: translateY(0); }

/* 品牌区 */
.masthead {
  padding: 30px 22px 22px;
  border-bottom: 1px solid var(--line);
}
.masthead__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}
.masthead__seal {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  display: grid;
  place-items: center;
  background: var(--c-red);
  color: var(--c-cream);
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  box-shadow: inset 0 0 0 1px rgba(251, 246, 238, 0.38);
  transition: background-color 0.22s var(--ease);
}
.masthead__brand:hover .masthead__seal { background: var(--c-red-deep); }
.masthead__word {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-ink);
}
.masthead__tagline {
  margin-top: 14px;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--c-fog);
}

/* 移动端按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--line-strong);
  font-size: var(--fs-13);
  letter-spacing: 0.06em;
}
.nav-toggle__bars {
  position: relative;
  width: 20px;
  height: 2px;
  background: currentColor;
  display: inline-block;
  transition: background-color 0.2s var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease), top 0.2s var(--ease);
}
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }
.site-header[data-open] .nav-toggle__bars { background: transparent; }
.site-header[data-open] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

/* 主导航（纵向时间轴） */
.site-nav {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.site-nav__list {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 20px 0 14px;
}
.site-nav__list::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 30px;
  bottom: 26px;
  width: 1px;
  background: linear-gradient(180deg, var(--c-amber), rgba(23, 51, 43, 0.14));
}
.site-nav__item { position: relative; }
.site-nav__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 20px 11px 28px;
  text-decoration: none;
  color: var(--c-ink);
  font-size: var(--fs-15);
  line-height: 1.5;
  transition: color 0.22s var(--ease), transform 0.22s var(--ease);
}
.site-nav__link::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 50%;
  width: 7px;
  height: 7px;
  margin-top: -3.5px;
  border-radius: 50%;
  background: var(--c-amber);
  box-shadow: 0 0 0 3px var(--c-paper);
  transition: background-color 0.22s var(--ease), box-shadow 0.22s var(--ease), transform 0.22s var(--ease);
}
.site-nav__link:hover {
  color: var(--c-red);
  transform: translateX(3px);
}
.site-nav__link:hover::before { background: var(--c-bamboo); }
.site-nav__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--c-fog);
  min-width: 22px;
  transition: color 0.22s var(--ease);
}
.site-nav__label { font-weight: 400; }
.site-nav__link[aria-current="page"] {
  color: var(--c-red);
  font-weight: 500;
}
.site-nav__link[aria-current="page"] .site-nav__label { font-weight: 500; }
.site-nav__link[aria-current="page"] .site-nav__no { color: var(--c-red); }
.site-nav__link[aria-current="page"]::before {
  background: var(--c-red);
  box-shadow: 0 0 0 3px var(--c-paper), 0 0 0 4px rgba(184, 39, 44, 0.30);
  transform: scale(1.15);
}

/* 竖栏底部 */
.site-nav__foot {
  flex: 0 0 auto;
  padding: 18px 22px 26px;
  border-top: 1px solid var(--line);
  background: rgba(251, 246, 238, 0.55);
}
.version-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  padding: 3px 9px;
  background: var(--c-ink);
  color: var(--c-amber);
}
.version-note {
  margin: 10px 0 16px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-fog);
}
.site-nav__foot .btn + .btn { margin-top: 10px; }

/* ============================================================
   共享页脚
   ============================================================ */
.site-footer {
  position: relative;
  background: var(--c-ink);
  color: var(--c-cream);
  padding: 56px var(--pad-x) 26px;
  border-top: 3px solid var(--c-amber);
  font-size: var(--fs-15);
}
.site-footer__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 26px;
  border-bottom: 1px solid rgba(251, 246, 238, 0.16);
}
.site-footer__word {
  font-family: var(--font-serif);
  font-size: var(--fs-28);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.2;
}
.site-footer__meta {
  font-size: var(--fs-13);
  color: var(--c-fog-light);
  letter-spacing: 0.08em;
}
.version-chip {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  padding: 3px 9px;
  border: 1px solid rgba(217, 162, 74, 0.55);
  color: var(--c-amber);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.05fr 1.6fr 0.95fr 0.85fr;
  gap: 40px;
  padding: 36px 0 8px;
}

.foot-col--1 { padding-top: 4px; }
.foot-col--2 { padding-top: 34px; }
.foot-col--3 { padding-top: 14px; }
.foot-col--4 { padding-top: 48px; }

.foot-col__title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-amber);
  margin-bottom: 16px;
}
.foot-col__list { display: flex; flex-direction: column; gap: 10px; }
.foot-col__list a {
  font-size: var(--fs-15);
  text-decoration: none;
  color: rgba(251, 246, 238, 0.86);
  border-bottom: 1px solid transparent;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease);
}
.foot-col__list a:hover { color: var(--c-cream); border-bottom-color: var(--c-amber); }
.foot-col__list--plain li {
  font-size: var(--fs-13);
  color: var(--c-fog-light);
  line-height: 1.7;
}

.foot-contact { display: grid; gap: 4px; }
.foot-contact dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-fog-light);
  margin-top: 10px;
}
.foot-contact dt:first-child { margin-top: 0; }
.foot-contact dd {
  font-size: var(--fs-15);
  line-height: 1.7;
  color: rgba(251, 246, 238, 0.92);
  word-break: break-word;
}
.foot-note {
  margin-top: 14px;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--c-fog-light);
}
.foot-link {
  display: inline-block;
  margin-top: 14px;
  font-size: var(--fs-15);
  color: var(--c-amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(217, 162, 74, 0.45);
  transition: border-color 0.22s var(--ease), color 0.22s var(--ease);
}
.foot-link:hover { color: var(--c-cream); border-bottom-color: var(--c-cream); }

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid rgba(251, 246, 238, 0.16);
  font-size: var(--fs-13);
  color: var(--c-fog-light);
}
.site-footer__copy { font-family: var(--font-mono); letter-spacing: 0.06em; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1180px) {
  .site-footer__grid { gap: 28px; grid-template-columns: 1fr 1.5fr 1fr; }
  .foot-col--4 { padding-top: 14px; }
}

@media (max-width: 980px) {
  body {
    padding-left: 0;
    padding-top: var(--topbar-h);
  }

  .site-header {
    top: 0;
    left: 0;
    right: 0;
    bottom: auto;
    width: auto;
    height: var(--topbar-h);
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0 18px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    background: linear-gradient(180deg, #F5ECE0 0%, #F2E9DC 100%);
  }

  .masthead {
    padding: 0;
    border-bottom: 0;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
  }
  .masthead__brand { gap: 10px; }
  .masthead__seal { width: 32px; height: 32px; flex-basis: 32px; font-size: 17px; }
  .masthead__word { font-size: var(--fs-17); letter-spacing: 0.04em; }
  .masthead__tagline { display: none; }

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

  .site-nav {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    right: 0;
    flex: none;
    max-height: calc(100vh - var(--topbar-h));
    overflow-y: auto;
    background: var(--c-paper);
    border-bottom: 1px solid var(--line);
    padding: 6px 20px 22px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.24s var(--ease), transform 0.24s var(--ease), visibility 0.24s linear;
  }
  .site-header[data-open] .site-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .site-nav__list { overflow: visible; padding: 12px 0 10px; }
  .site-nav__link { padding: 12px 0 12px 28px; font-size: var(--fs-17); }
  .site-nav__foot {
    padding: 18px 0 4px;
    border-top: 1px solid var(--line);
    background: transparent;
  }

  .section { padding: 52px 0; }
  .section--tight { padding: 34px 0; }

  .site-footer { padding: 44px var(--pad-x) 24px; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; gap: 28px 24px; padding-top: 28px; }
  .foot-col--1, .foot-col--2, .foot-col--3, .foot-col--4 { padding-top: 0; }
  .foot-col--2 { grid-column: span 2; }
  .version-chip { margin-left: 0; }
}

@media (max-width: 760px) {
  .grid--7-5, .grid--5-7, .grid--8-4, .grid--9-3 {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .strip__track > * { flex-basis: min(78vw, 320px); }
}

@media (max-width: 620px) {
  .site-footer__grid { grid-template-columns: 1fr; }
  .foot-col--2 { grid-column: span 1; }
  .site-footer__bottom { flex-direction: column; }
}

/* ---------- 减动效 ---------- */
@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;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  .exhibit:hover { transform: none; }
  .site-nav__link:hover { transform: none; }
}