/* ============================================================
   /assets/site.css — 共享外壳与基础组件
   色彩节奏：舞台深黑打底 · 暖金做刻度与描边 · 孔雀蓝/酒红做栏目身份
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root {
  --ink: #0B0B0D;
  --panel: #14141A;
  --slate: #23242C;
  --gold: #C9A227;
  --gold-bright: #E8C766;
  --teal: #0F5F73;
  --teal-light: #6FB3BE;
  --wine: #6E1F2E;
  --cream: #F3EDE2;
  --smoke: #8C8A83;
  --status: #3E8E5A;

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;

  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --shadow-hard: 8px 8px 0 rgba(0, 0, 0, .55);
  --shadow-soft: 5px 5px 0 rgba(0, 0, 0, .45);
  --ease: cubic-bezier(.22, .61, .36, 1);

  --fs-xs: 12px;
  --fs-sm: 14px;
  --fs-base: 16px;
  --fs-md: 20px;
  --fs-lg: 25px;
  --fs-xl: 31px;
  --fs-2xl: 39px;
  --fs-3xl: 49px;
}

/* ---------- 2. 重置与基础 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--ink);
  color: var(--cream);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: .01em;
  color: var(--cream);
}

h1 { font-size: clamp(var(--fs-xl), 4.6vw, var(--fs-3xl)); letter-spacing: .02em; }
h2 { font-size: clamp(var(--fs-lg), 3vw, var(--fs-xl)); }
h3 { font-size: var(--fs-md); }
h4 { font-size: var(--fs-base); letter-spacing: .06em; }

p { margin: 0 0 1.2em; }
p:last-child { margin-bottom: 0; }

a { color: var(--gold-bright); text-decoration: none; }
a:hover { color: var(--gold-bright); }

ul, ol { margin: 0 0 1.2em; padding-left: 1.25em; }

::selection { background: var(--gold); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 3px;
}

.mono,
[data-mono] {
  font-family: var(--font-mono);
  font-size: .8em;
  letter-spacing: .18em;
}

/* ---------- 3. 跳至主内容 ---------- */
.skip-link {
  position: fixed;
  top: -120px;
  left: 16px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--gold-bright);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-soft);
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---------- 4. 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.wrap--narrow {
  max-width: 720px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding: clamp(48px, 7vw, 88px) 0; }
.section--tight { padding: clamp(28px, 4vw, 44px) 0; }

.grid { display: grid; gap: 24px; }
.grid--2, .grid--3 { grid-template-columns: 1fr; }

@media (min-width: 760px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.hairline {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, transparent, rgba(201, 162, 39, .8) 20%, var(--gold) 50%, rgba(201, 162, 39, .8) 80%, transparent);
}

/* ---------- 5. 页头：居中刊头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: linear-gradient(180deg, #0B0B0D 0%, #0B0B0D 72%, rgba(11, 11, 13, .97) 100%);
  box-shadow: 0 10px 28px -18px rgba(0, 0, 0, .95);
}

.header-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 9px var(--gutter);
  border-bottom: 1px solid rgba(201, 162, 39, .16);
}

.header-strip__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .28em;
  color: var(--smoke);
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-strip__tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

/* 状态章 */
.status-seal {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border: 1px solid var(--gold);
  background: rgba(201, 162, 39, .07);
  color: var(--gold-bright);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  line-height: 1.6;
  box-shadow: 2px 2px 0 rgba(0, 0, 0, .55);
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}
.status-seal:hover {
  background: rgba(232, 199, 102, .16);
  border-color: var(--gold-bright);
  color: var(--cream);
}
.status-seal__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--status);
  box-shadow: 0 0 0 3px rgba(62, 142, 90, .2);
  flex: none;
}
.status-seal__text { white-space: nowrap; }

/* 汉堡按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 11px;
  background: transparent;
  border: 1px solid rgba(201, 162, 39, .6);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.nav-toggle:hover { color: var(--gold-bright); border-color: var(--gold-bright); }
.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  width: 16px;
}
.nav-toggle__bars i {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform .24s var(--ease), opacity .24s var(--ease);
}
.nav-toggle__bars i:nth-child(2) { width: 70%; }
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle__label { white-space: nowrap; }

/* 刊头主体 */
.masthead {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 8px var(--gutter) 16px;
}

.masthead-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 6px 0;
  color: var(--cream);
  text-align: center;
}
.masthead-brand__cn {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, var(--fs-xl));
  letter-spacing: .18em;
  line-height: 1.1;
  transition: color .2s var(--ease);
}
.masthead-brand__latin {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .44em;
  color: var(--gold);
  text-indent: .44em;
}
.masthead-brand:hover .masthead-brand__cn { color: var(--gold-bright); }

.masthead-baseline {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 162, 39, .85) 18%, var(--gold-bright) 50%, rgba(201, 162, 39, .85) 82%, transparent);
}

/* 导航：移动优先（抽屉） */
.masthead-nav { display: block; }

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-list a {
  position: relative;
  display: block;
  color: var(--cream);
  font-size: var(--fs-sm);
  letter-spacing: .14em;
  text-decoration: none;
  transition: color .2s var(--ease);
}
.nav-list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 2px;
  background: var(--gold-bright);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .24s var(--ease);
}
.nav-list a:hover { color: var(--gold-bright); }
.nav-list a:hover::after { transform: scaleX(1); }
.nav-list a[aria-current="page"] { color: var(--gold-bright); }
.nav-list a[aria-current="page"]::after {
  transform: scaleX(1);
  box-shadow: 0 0 10px rgba(232, 199, 102, .55);
}

/* ---------- 6. 移动端抽屉（< 900px） ---------- */
@media (max-width: 899.98px) {
  .masthead-navs {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    max-height: calc(100vh - 96px);
    overflow-y: auto;
    padding: 10px var(--gutter) 24px;
    background: var(--panel);
    border-top: 1px solid rgba(201, 162, 39, .35);
    border-bottom: 2px solid var(--gold);
    box-shadow: 0 24px 40px -20px rgba(0, 0, 0, .95);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .24s var(--ease), transform .24s var(--ease), visibility .24s var(--ease);
  }

  .site-header[data-open="true"] .masthead-navs {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .masthead-nav + .masthead-nav {
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px solid rgba(243, 237, 226, .1);
  }

  .nav-list a {
    padding: 14px 14px;
    border-left: 2px solid rgba(201, 162, 39, .4);
    font-size: var(--fs-base);
  }
  .masthead-nav--right .nav-list a { border-left-color: rgba(110, 31, 46, .95); }
  .nav-list a::after { left: 14px; right: 14px; bottom: 8px; }
}

/* ---------- 7. 桌面刊头（>= 900px） ---------- */
@media (min-width: 900px) {
  .nav-toggle { display: none; }

  .masthead {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: clamp(16px, 3vw, 40px);
    padding: 16px var(--gutter) 18px;
  }

  .masthead-navs { display: contents; }

  .masthead-brand {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
  }

  .masthead-nav--left {
    grid-column: 1;
    grid-row: 1;
    justify-self: start;
  }

  .masthead-nav--right {
    grid-column: 3;
    grid-row: 1;
    justify-self: end;
  }

  .nav-list {
    flex-direction: row;
    align-items: center;
    gap: clamp(14px, 2.2vw, 28px);
  }

  .nav-list a { padding: 10px 0; }
  .nav-list a::after { bottom: 3px; }
}

/* ---------- 8. 页脚 ---------- */
.site-footer {
  margin-top: clamp(48px, 8vw, 96px);
  background: linear-gradient(180deg, var(--panel) 0%, var(--ink) 100%);
  border-top: 3px solid var(--gold);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(36px, 6vw, 60px) var(--gutter) clamp(28px, 4vw, 44px);
}

@media (min-width: 720px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1000px) {
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1.35fr; gap: 44px; }
}

.footer-brand__name {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: var(--fs-lg);
  letter-spacing: .16em;
  color: var(--cream);
}
.footer-brand__line {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: var(--fs-base);
  letter-spacing: .06em;
  color: var(--gold-bright);
}
.footer-brand__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--smoke);
}

.footer-col__title {
  margin: 0 0 16px;
  padding-top: 12px;
  border-top: 2px solid var(--gold);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--smoke);
}
.footer-col--gold .footer-col__title { border-top-color: var(--gold); }
.footer-col--teal .footer-col__title { border-top-color: var(--teal-light); }
.footer-col--wine .footer-col__title { border-top-color: var(--wine); box-shadow: inset 0 1px 0 rgba(243, 237, 226, .22); }

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-list a {
  color: var(--cream);
  font-size: var(--fs-sm);
  letter-spacing: .06em;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.footer-list a:hover {
  color: var(--gold-bright);
  border-bottom-color: var(--gold-bright);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-contact__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .3em;
  color: var(--smoke);
  text-transform: uppercase;
  margin-bottom: 1px;
}
.footer-contact__value {
  display: block;
  color: var(--cream);
  font-size: var(--fs-sm);
  letter-spacing: .03em;
  overflow-wrap: anywhere;
}

.footer-icp {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--smoke);
}

.footer-note {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px var(--gutter);
  border-top: 1px solid rgba(201, 162, 39, .2);
  color: var(--cream);
  font-size: 13px;
  letter-spacing: .08em;
  text-align: center;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 16px var(--gutter) 32px;
  border-top: 1px solid rgba(243, 237, 226, .08);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--smoke);
}
.footer-base__copy { margin: 0; }
.footer-base__links {
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-base__links a {
  color: var(--smoke);
  transition: color .2s var(--ease);
}
.footer-base__links a:hover { color: var(--gold-bright); }

/* ---------- 9. 通用文字组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--gold);
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--gold);
  flex: none;
}

.anno {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .25em;
  color: var(--smoke);
  text-transform: uppercase;
}
.anno--vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: .35em;
}

.prose {
  max-width: 72ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--cream);
}
.prose h2 { margin: 1.8em 0 .6em; }
.prose h3 { margin: 1.6em 0 .5em; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin-bottom: .4em; }
.prose a { border-bottom: 1px solid rgba(232, 199, 102, .5); }
.prose a:hover { border-bottom-color: var(--gold-bright); }

/* ---------- 10. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  border: 2px solid var(--gold);
  background: transparent;
  color: var(--gold-bright);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  line-height: 1.4;
  text-decoration: none;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, .6);
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.btn:hover {
  background: var(--gold-bright);
  border-color: var(--gold-bright);
  color: var(--ink);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, .7);
}
.btn--solid {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}
.btn--solid:hover { background: var(--gold-bright); border-color: var(--gold-bright); }
.btn--ghost {
  border-color: rgba(243, 237, 226, .3);
  color: var(--cream);
}
.btn--ghost:hover { background: var(--cream); color: var(--ink); border-color: var(--cream); }
.btn--teal {
  border-color: var(--teal-light);
  color: var(--teal-light);
}
.btn--teal:hover { background: var(--teal-light); color: var(--ink); border-color: var(--teal-light); }

/* ---------- 11. 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 20px 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--smoke);
}
.crumbs li { display: inline-flex; align-items: center; }
.crumbs li + li::before {
  content: "/";
  margin: 0 8px;
  color: rgba(140, 138, 131, .55);
}
.crumbs a { color: var(--smoke); }
.crumbs a:hover { color: var(--gold-bright); }
.crumbs [aria-current="page"] { color: var(--cream); }

/* ---------- 12. 面板与卡片 ---------- */
.panel {
  padding: clamp(18px, 3vw, 32px);
  background: var(--panel);
  border: 2px solid rgba(201, 162, 39, .28);
  box-shadow: var(--shadow-hard);
}
.panel--teal { border-color: rgba(111, 179, 190, .42); }
.panel--wine { border-color: rgba(110, 31, 46, .95); }

.card {
  padding: clamp(16px, 2.4vw, 24px);
  background: var(--slate);
  border: 2px solid rgba(201, 162, 39, .22);
  box-shadow: var(--shadow-soft);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.card--lift:hover {
  border-color: var(--gold);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, .65);
}

/* ---------- 13. 状态标签 ---------- */
.state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 3px 10px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  line-height: 1.6;
  white-space: nowrap;
}
.state::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}
.state--live { color: var(--status); }
.state--pending { color: var(--gold-bright); }
.state--archived { color: var(--smoke); }

/* ---------- 14. 图片容器基础规则 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  background: #191A21;
  border: 2px solid rgba(201, 162, 39, .35);
  box-shadow: var(--shadow-hard);
}
.media > img,
.media > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.82) brightness(.88) contrast(1.03);
  transition: filter .3s var(--ease);
}
.media::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(232, 199, 102, .42);
  pointer-events: none;
}
.media:hover > img,
.media:hover > picture > img { filter: saturate(.95) brightness(.96); }

.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--3x4 { aspect-ratio: 3 / 4; }

.media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  margin: 0;
  padding: 8px 12px;
  background: rgba(11, 11, 13, .85);
  border-top: 1px solid rgba(201, 162, 39, .45);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .22em;
  color: var(--cream);
}

/* ---------- 15. 可展开内容组 ---------- */
.disclosure {
  border-top: 1px solid rgba(201, 162, 39, .24);
}
.disclosure__btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 0;
  background: none;
  border: 0;
  color: var(--cream);
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .02em;
  text-align: left;
  cursor: pointer;
  transition: color .2s var(--ease);
}
.disclosure__btn:hover { color: var(--gold-bright); }
.disclosure__icon {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  transition: transform .24s var(--ease);
}
.disclosure__icon::before {
  content: "";
  position: absolute;
  inset: 2px 1px 2px 3px;
  border-right: 2px solid var(--gold-bright);
  border-bottom: 2px solid var(--gold-bright);
  transform: rotate(-45deg);
}
.disclosure__btn[aria-expanded="true"] .disclosure__icon { transform: rotate(90deg); }
.disclosure__panel {
  padding: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--cream);
}
.disclosure__panel[hidden] { display: none; }

/* ---------- 16. 显现与滚动刻度 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .32s var(--ease), transform .32s var(--ease);
}
html.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

.scroll-scale {
  position: fixed;
  right: 10px;
  top: 50%;
  z-index: 70;
  width: 2px;
  height: 34vh;
  transform: translateY(-50%);
  background: rgba(243, 237, 226, .12);
  background-image: repeating-linear-gradient(180deg, rgba(243, 237, 226, .16) 0 1px, transparent 1px 11px);
  pointer-events: none;
}
.scroll-scale__fill {
  position: absolute;
  inset: 0 0 auto 0;
  height: 100%;
  transform-origin: top center;
  transform: scaleY(0);
  background: linear-gradient(180deg, var(--gold-bright), var(--gold));
}

@media (max-width: 899.98px) {
  .scroll-scale { display: none; }
}

/* ---------- 17. 小屏微调与动效偏好 ---------- */
@media (max-width: 520px) {
  .header-strip__index { display: none; }
  .header-strip { justify-content: flex-end; }
  .footer-base { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  html.js [data-reveal],
  html.js [data-reveal].is-in {
    opacity: 1;
    transform: none;
  }
}