/* =========================================================
   逸贝娱乐会馆 · 共享样式表 /assets/site.css
   ========================================================= */

:root {
  --color-surface: #f8f8f8;
  --color-surface-alt: #efefef;
  --color-surface-deep: #e3e3e2;
  --color-ink: #4b483f;
  --color-ink-soft: #716d60;
  --color-ink-muted: #888577;
  --color-line: #d9d8d7;
  --color-primary: #8b7418;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e9e6d9;
  --color-accent: #b40af5;
  --color-accent-ink: #ffffff;
  --color-highlight: #eccdf7;
  --color-focus: #b100f5;
  --color-contrast-surface: #1b190e;
  --color-contrast-ink: #e7e6e4;
  --color-contrast-line: #48463d;
  --color-contrast-accent: #c440f7;
  --overlay-scrim: linear-gradient(180deg, rgba(27, 25, 14, 0.35) 0%, rgba(27, 25, 14, 0.72) 55%, rgba(27, 25, 14, 0.92) 100%);
  --font-heading: "Source Han Sans SC", "Noto Sans SC", SimHei, "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, Menlo, Consolas, monospace;
  --text-xs: 12.9px;
  --text-sm: 16.1px;
  --text-base: 18px;
  --text-lg: 22.5px;
  --text-xl: 28.1px;
  --text-2xl: 35.2px;
  --text-3xl: 43.9px;
  --text-4xl: 54.9px;
  --text-display: clamp(40px, 8.2vw, 105px);
  --text-figure: clamp(33px, 5.9vw, 76px);
  --weight-heading: 806;
  --weight-body: 400;
  --leading-body: 1.74;
  --leading-heading: 1.17;
  --tracking-heading: 0.001em;
  --radius-sm: 14px;
  --radius-md: 14px;
  --radius-lg: 14px;
  --radius-pill: 999px;
  --border-thin: 2px;
  --border-thick: 2px;
  --shadow-1: 0 1px 0 rgba(75, 72, 63, 0.12);
  --shadow-2: 0 2px 0 rgba(75, 72, 63, 0.18);
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1240px;
  --measure: 73ch;
  --gutter: 24px;
  --section-y: 69px;
  --section-y-lg: 97px;
}

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: var(--weight-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  background-color: var(--color-surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  text-wrap: balance;
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }
h5 { font-size: var(--text-base); }
h6 { font-size: var(--text-sm); }

p { margin: 0 0 var(--space-2); }
p:last-child { margin-bottom: 0; }

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

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

ul, ol { margin: 0 0 var(--space-2); padding-left: 1.3em; }
li { margin: 0; }

nav ul,
.site-nav__list,
.footer-list,
.breadcrumb { list-style: none; padding-left: 0; margin: 0; }

button { font: inherit; color: inherit; background: none; border: 0; }
table { border-collapse: collapse; width: 100%; }
hr { border: 0; }

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 4px;
}

.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;
}

/* ---------- 2. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: var(--space-3);
  top: -120px;
  z-index: 300;
  display: inline-block;
  padding: 12px 22px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-primary-ink);
  background-color: var(--color-primary);
  border: var(--border-thick) solid var(--color-contrast-surface);
  border-radius: var(--radius-pill);
  box-shadow: 3px 3px 0 var(--color-contrast-surface);
  transition: top 160ms ease-out;
}

.skip-link:focus { top: var(--space-2); }

/* ---------- 3. 页头 ---------- */
.site-header {
  position: relative;
  z-index: 100;
  background-color: var(--color-surface);
}

/* 刊头 */
.masthead {
  background-color: var(--color-surface);
  border-bottom: var(--border-thin) solid var(--color-line);
  overflow: hidden;
}

.masthead__inner {
  position: relative;
  max-width: var(--container);
  margin-inline: auto;
  padding: var(--space-6) var(--gutter) var(--space-4);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-3);
}

.masthead__inner::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--color-primary);
  transform: translateY(-50%);
}

.masthead__inner::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 34px;
  height: 12px;
  border-radius: var(--radius-pill);
  background-color: var(--color-accent);
  transform: translateY(-50%) rotate(-8deg);
}

.masthead__brand {
  display: block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--color-ink);
  text-align: center;
  white-space: nowrap;
  transition: color 160ms ease-out;
}

.masthead__brand:hover { color: var(--color-primary); }

.masthead__kicker,
.masthead__meta {
  margin: 0;
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--color-ink-muted);
}

.masthead__kicker {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-ink-soft);
  padding-left: var(--space-4);
}

.masthead__meta {
  text-align: right;
  padding-right: var(--space-4);
}

/* 栏目条 */
.nav-band {
  background-color: var(--color-surface-alt);
  border-bottom: 6px double var(--color-ink);
}

.nav-band__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: var(--space-1) var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.site-nav { flex: 1 1 auto; min-width: 0; }

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0 var(--space-1);
}

.site-nav__link {
  display: inline-block;
  padding: 12px 12px 10px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  border-bottom: 4px solid transparent;
  transition: color 160ms ease-out, border-color 160ms ease-out, transform 160ms ease-out;
}

.site-nav__link:hover {
  color: var(--color-ink);
  transform: translateY(-2px);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-ink);
  border-bottom-color: var(--color-primary);
}

.nav-band__aside {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 0 0 auto;
}

.nav-band__link {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  padding-bottom: 2px;
  border-bottom: var(--border-thin) solid transparent;
  white-space: nowrap;
  transition: color 160ms ease-out, border-color 160ms ease-out;
}

.nav-band__link:hover {
  color: var(--color-ink);
  border-bottom-color: var(--color-accent);
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  padding: 10px 18px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-ink);
  background-color: var(--color-surface);
  border: var(--border-thick) solid var(--color-ink);
  border-radius: var(--radius-pill);
  box-shadow: 3px 3px 0 var(--color-ink);
  cursor: pointer;
  transition: transform 160ms ease-out, box-shadow 160ms ease-out, background-color 160ms ease-out;
}

.nav-toggle:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--color-ink);
}

.nav-toggle__bars {
  position: relative;
  display: inline-block;
  width: 18px;
  height: 12px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: var(--border-thin);
  background-color: currentColor;
  transition: transform 160ms ease-out;
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }

.site-header[data-open] .nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }

/* ---------- 4. 页脚 ---------- */
.site-footer {
  position: relative;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: 6px double var(--color-primary);
}

.site-footer__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: var(--section-y) var(--gutter) var(--space-4);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 1.15fr 1.1fr 0.95fr;
  align-items: start;
}

.footer-col { padding-inline: var(--space-3); }
.footer-col:first-child { padding-left: 0; }
.footer-col:last-child { padding-right: 0; }
.footer-col + .footer-col { border-left: 6px double var(--color-contrast-line); }

.footer-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-contrast-ink);
}

.footer-title::after {
  content: "";
  display: block;
  width: 28px;
  height: 3px;
  margin-top: 8px;
  background-color: var(--color-primary);
}

.footer-list { display: grid; gap: 6px; }
.footer-list--plain li { color: var(--color-contrast-ink); }

.footer-link {
  position: relative;
  display: inline-block;
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  transition: color 160ms ease-out;
}

.footer-link:hover { color: var(--color-contrast-accent); }

.footer-text {
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
}

.footer-cta {
  display: inline-block;
  margin-bottom: var(--space-2);
  padding: 10px 20px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-primary-ink);
  background-color: var(--color-primary);
  border: var(--border-thick) solid var(--color-primary);
  border-radius: var(--radius-pill);
  box-shadow: 3px 3px 0 var(--color-contrast-line);
  transition: transform 160ms ease-out, box-shadow 160ms ease-out;
}

.footer-cta:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--color-contrast-line);
}

.footer-detail {
  margin: 0;
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 160ms ease-out, max-height 180ms ease-out;
}

.footer-feedback:hover .footer-detail,
.footer-feedback:focus-within .footer-detail {
  opacity: 1;
  max-height: 12em;
}

.footer-note {
  margin: var(--space-2) 0 0;
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

.footer-icp {
  margin: var(--space-2) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-contrast-ink);
  padding-top: var(--space-1);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.footer-bottom {
  margin-top: var(--section-y);
  padding-top: var(--space-3);
  border-top: 6px double var(--color-contrast-line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.footer-bottom p {
  margin: 0;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ---------- 5. 通用布局 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section-y); }
.section--lg { padding-block: var(--section-y-lg); }
.section--alt { background-color: var(--color-surface-alt); }
.section--deep { background-color: var(--color-surface-deep); }

.section--contrast {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.section--contrast h1,
.section--contrast h2,
.section--contrast h3,
.section--contrast h4 { color: var(--color-contrast-ink); }

.section--contrast .prose,
.section--contrast .lede { color: var(--color-contrast-ink); }

.section--contrast .rule {
  border-top-color: var(--color-contrast-line);
  border-bottom-color: var(--color-contrast-line);
}

.grid { display: grid; gap: var(--space-3); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--7 { grid-template-columns: repeat(7, minmax(0, 1fr)); }

.stack > * + * { margin-top: var(--space-3); }

/* ---------- 6. 文字组件 ---------- */
.eyebrow {
  display: inline-block;
  margin-bottom: var(--space-2);
  padding: 5px 14px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-primary);
  background-color: var(--color-primary-soft);
  border-radius: var(--radius-pill);
}

.section-head { margin-bottom: var(--space-4); }
.section-head > *:last-child { margin-bottom: 0; }

.lede {
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: 1.62;
  color: var(--color-ink-soft);
}

.prose {
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.prose h2,
.prose h3 { color: var(--color-ink); margin-top: var(--space-4); }

.prose a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  transition: color 160ms ease-out, text-decoration-color 160ms ease-out;
}

.prose a:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-primary);
}

.prose ul,
.prose ol { max-width: var(--measure); }

.pull-quote {
  margin: var(--space-4) 0;
  padding: var(--space-1) 0 var(--space-1) var(--space-3);
  border-left: 6px double var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-ink);
  max-width: var(--measure);
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-xs);
  color: var(--color-ink);
  background-color: var(--color-highlight);
  border-radius: var(--radius-pill);
}

.note {
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

.rule {
  height: 6px;
  margin: var(--space-4) 0;
  border: 0;
  border-top: var(--border-thin) solid var(--color-ink);
  border-bottom: var(--border-thin) solid var(--color-ink);
  background: transparent;
}

/* ---------- 7. 按钮与链接 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 14px 26px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-sm);
  line-height: 1.2;
  color: var(--color-ink);
  background-color: var(--color-surface);
  border: var(--border-thick) solid var(--color-ink);
  border-radius: var(--radius-pill);
  box-shadow: 3px 3px 0 var(--color-ink);
  cursor: pointer;
  transition: transform 160ms ease-out, box-shadow 160ms ease-out, background-color 160ms ease-out, color 160ms ease-out, border-color 160ms ease-out;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--color-ink);
}

.btn:active {
  transform: translate(0, 0);
  box-shadow: 2px 2px 0 var(--color-ink);
}

.btn--primary {
  color: var(--color-primary-ink);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 3px 3px 0 var(--color-contrast-surface);
}

.btn--primary:hover { box-shadow: 5px 5px 0 var(--color-contrast-surface); }

.btn--accent {
  color: var(--color-accent-ink);
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: 3px 3px 0 var(--color-contrast-surface);
}

.btn--accent:hover { box-shadow: 5px 5px 0 var(--color-contrast-surface); }

.btn--ghost {
  background-color: transparent;
  box-shadow: none;
}

.btn--ghost:hover {
  background-color: var(--color-primary-soft);
  box-shadow: 3px 3px 0 var(--color-ink);
}

.btn--sm { padding: 10px 18px; font-size: var(--text-xs); }

.link-sweep {
  position: relative;
  text-decoration: none;
}

.link-sweep::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: var(--border-thin);
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 160ms ease-out;
}

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

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.breadcrumb li { display: inline-flex; align-items: center; }

.breadcrumb li + li::before {
  content: "→";
  margin-right: var(--space-1);
  color: var(--color-primary);
}

.breadcrumb a {
  color: var(--color-ink-soft);
  border-bottom: var(--border-thin) solid transparent;
  transition: color 160ms ease-out, border-color 160ms ease-out;
}

.breadcrumb a:hover {
  color: var(--color-ink);
  border-bottom-color: var(--color-primary);
}

/* ---------- 9. 卡片与图片容器 ---------- */
.exhibit {
  position: relative;
  padding: var(--space-3);
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-ink);
  border-radius: var(--radius-md);
  box-shadow: 4px 4px 0 var(--color-primary-soft);
  transition: transform 160ms ease-out, box-shadow 160ms ease-out, border-color 160ms ease-out;
}

.exhibit:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--color-primary-soft);
  border-color: var(--color-primary);
}

.exhibit__label {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-accent);
}

.section--contrast .exhibit {
  background-color: var(--color-surface);
  color: var(--color-ink);
}

.frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: var(--border-thick) solid var(--color-ink);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-deep);
  box-shadow: 4px 4px 0 var(--color-ink);
}

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

.frame--wide { aspect-ratio: 16 / 9; }
.frame--tall { aspect-ratio: 3 / 4; }
.frame--square { aspect-ratio: 1 / 1; }
.frame--band { aspect-ratio: 21 / 9; }
.frame--pano { aspect-ratio: 2 / 1; }

.frame__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: var(--space-1);
  padding: var(--space-3);
  background-image: var(--overlay-scrim);
  color: var(--color-contrast-ink);
}

.frame__overlay h3,
.frame__overlay h4 { color: var(--color-contrast-ink); margin: 0; }

.caption {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ---------- 10. 返回顶部（JS 注入） ---------- */
.to-top {
  position: fixed;
  right: var(--space-3);
  bottom: var(--space-3);
  z-index: 200;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 18px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-xs);
  color: var(--color-ink);
  background-color: var(--color-surface);
  border: var(--border-thick) solid var(--color-ink);
  border-radius: var(--radius-pill);
  box-shadow: 3px 3px 0 var(--color-ink);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 160ms ease-out, transform 160ms ease-out, visibility 160ms ease-out, box-shadow 160ms ease-out;
}

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

.to-top[data-visible]:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--color-ink);
}

/* ---------- 11. 滚动显现 ---------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 180ms ease-out, transform 180ms ease-out;
}

.has-js [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- 12. 响应式 ---------- */
@media (min-width: 1024px) {
  .masthead__brand { font-size: var(--text-4xl); letter-spacing: 0.08em; }
  h1 { font-size: var(--text-4xl); }
}

@media (max-width: 1024px) {
  .masthead__kicker,
  .masthead__meta { padding-left: 0; padding-right: 0; }
}

@media (max-width: 960px) {
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-4);
    row-gap: var(--space-4);
  }

  .footer-col {
    padding-inline: 0;
    padding-top: var(--space-4);
    border-top: 6px double var(--color-contrast-line);
  }

  .footer-col + .footer-col { border-left: 0; }
  .footer-col:nth-child(1),
  .footer-col:nth-child(2) { border-top: 0; padding-top: 0; }

  .grid--7 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .nav-band__inner {
    flex-wrap: wrap;
    justify-content: flex-start;
    row-gap: var(--space-2);
    padding-block: var(--space-2);
  }

  .nav-toggle { display: inline-flex; order: 1; }

  .nav-band__aside {
    order: 2;
    margin-left: auto;
  }

  .site-nav {
    order: 3;
    flex: 1 1 100%;
    display: none;
  }

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

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-top: var(--space-2);
    padding-top: var(--space-2);
    border-top: var(--border-thick) solid var(--color-line);
  }

  .site-nav__link {
    display: block;
    padding: 12px 4px;
    border-bottom: var(--border-thin) solid var(--color-line);
    border-left: 4px solid transparent;
  }

  .site-nav__link[aria-current="page"] {
    border-bottom-color: var(--color-line);
    border-left-color: var(--color-primary);
    padding-left: 12px;
  }

  .site-nav__link:hover { transform: none; }
}

@media (max-width: 720px) {
  .masthead__inner {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    gap: var(--space-1);
    padding-block: var(--space-4) var(--space-3);
  }

  .masthead__inner::before,
  .masthead__inner::after { display: none; }

  .masthead__kicker { order: 2; }
  .masthead__brand { order: 1; }
  .masthead__meta { order: 3; text-align: center; }

  .nav-band__aside { flex-wrap: wrap; justify-content: flex-end; }

  .grid--7,
  .grid--3,
  .grid--2 { grid-template-columns: minmax(0, 1fr); }

  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); row-gap: 0; }

  .footer-grid .footer-col {
    padding-top: var(--space-4);
    border-top: 6px double var(--color-contrast-line);
  }

  .footer-grid .footer-col:first-child { border-top: 0; padding-top: 0; }

  .nav-band__link { font-size: var(--text-xs); }
}

/* ---------- 13. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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

  .btn:hover,
  .exhibit:hover,
  .nav-toggle:hover,
  .footer-cta:hover,
  .to-top[data-visible]:hover,
  .site-nav__link:hover {
    transform: none;
  }
}