/* ==========================================================================
   皇家国际 · 共享样式表 /assets/site.css
   设计语汇：可检索的皇家档案馆 · 双开门廊 · 粗边框硬投影
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 150px;
}

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

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

button { font: inherit; }

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

/* ---------- 2. 变量 ---------- */
:root {
  --red: #6E1423;
  --red-deep: #4A0D17;
  --gold: #C6A15B;
  --gold-bronze: #8C6A3A;
  --gold-smoke: #A88E63;
  --gold-dark: #7C6336;
  --gold-champagne: #BFA57A;
  --cream: #F4EBDD;
  --paper: #FBF5EA;
  --ink: #1B1715;
  --ink-soft: #3D3833;
  --terracotta: #B4532A;

  --line: rgba(27, 23, 21, 0.18);
  --line-strong: rgba(27, 23, 21, 0.42);
  --line-light: rgba(244, 235, 221, 0.24);

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

  --w-max: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --shadow-hard: 6px 6px 0 var(--ink);
  --shadow-gold: 6px 6px 0 var(--gold-bronze);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: 0.01em;
}

p { text-wrap: pretty; }

strong { font-weight: 700; }

a { color: inherit; }

:focus-visible {
  outline: 3px solid var(--terracotta);
  outline-offset: 3px;
}

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

.section { padding-block: clamp(40px, 7vw, 88px); }
.section--paper { background: var(--paper); }
.section--red { background: var(--red); color: var(--cream); }
.section--ink { background: var(--red-deep); color: var(--cream); }
.section--cream { background: var(--cream); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px 20px;
  margin-bottom: clamp(24px, 4vw, 40px);
  padding-bottom: 16px;
  border-bottom: 3px solid var(--gold);
}

.section__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold-bronze);
}

.section--red .section__eyebrow,
.section--ink .section__eyebrow { color: var(--gold-champagne); }

.section__title {
  margin: 0;
  font-size: clamp(26px, 4vw, 44px);
  letter-spacing: 0.02em;
}

.section--red .section__title,
.section--ink .section__title { color: var(--cream); }

.section__lede {
  flex: 1 1 320px;
  max-width: 64ch;
  font-size: 15px;
  color: var(--ink-soft);
}

.section--red .section__lede,
.section--ink .section__lede { color: rgba(244, 235, 221, 0.86); }

.rule {
  height: 0;
  border: 0;
  border-top: 3px solid var(--gold);
  margin: 0;
}

/* ---------- 5. 无障碍跳转 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 999;
  display: inline-block;
  padding: 10px 20px;
  background: var(--gold);
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  border: 3px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  transform: translateY(-220%);
  transition: transform 0.18s ease;
}

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

/* ---------- 6. 页头：双层信息导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--red-deep);
  box-shadow: 0 3px 0 rgba(27, 23, 21, 0.28);
}

/* 6.1 上层：品牌与档案定位 */
.header-upper {
  background: var(--red-deep);
  color: var(--cream);
  border-bottom: 3px solid var(--gold);
}

.header-upper__inner {
  max-width: var(--w-max);
  margin-inline: auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--cream);
}

.brand__seal {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  line-height: 1;
  color: var(--gold);
  background: rgba(198, 161, 91, 0.1);
  border: 2px solid var(--gold);
  box-shadow: 3px 3px 0 rgba(198, 161, 91, 0.4);
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.25;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--cream);
}

.brand__line {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--gold-champagne);
}

.header-upper__note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--gold-smoke);
  white-space: nowrap;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-decoration: none;
  color: var(--gold);
  border: 2px solid var(--gold);
  transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.header-cta:hover {
  background: var(--gold);
  color: var(--red-deep);
  box-shadow: 4px 4px 0 rgba(198, 161, 91, 0.35);
}

/* 6.2 下层：栏目索引轴 */
.header-lower {
  background: var(--cream);
  border-bottom: 3px solid var(--ink);
}

.header-lower__inner {
  max-width: var(--w-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 16px;
}

.primary-nav { display: flex; }

.primary-nav__list {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: navidx;
}

.primary-nav__item {
  counter-increment: navidx;
  display: flex;
}

.primary-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 17px 20px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  text-decoration: none;
  border-left: 1px solid var(--line);
  transition: background 0.18s ease, color 0.18s ease;
}

.primary-nav__item:first-child .primary-nav__link { border-left: 0; }

.primary-nav__link::before {
  content: counter(navidx, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gold-bronze);
  transition: color 0.18s ease;
}

.primary-nav__link:hover {
  background: rgba(198, 161, 91, 0.2);
  color: var(--red);
}

.primary-nav__link:hover::before { color: var(--red); }

.primary-nav__link[aria-current="page"] {
  background: var(--red);
  color: var(--paper);
}

.primary-nav__link[aria-current="page"]::before { color: var(--gold); }

.primary-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: var(--gold);
}

/* 6.3 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 12px 0;
  padding: 12px 16px;
  background: var(--paper);
  color: var(--ink);
  border: 3px solid var(--ink);
  box-shadow: 4px 4px 0 var(--red);
  cursor: pointer;
  transition: box-shadow 0.18s ease, transform 0.18s ease;
}

.nav-toggle:hover { box-shadow: 6px 6px 0 var(--red); }
.nav-toggle:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--red); }

.nav-toggle__label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: currentColor;
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

/* 6.4 滚动进度刻度 */
.scroll-meter {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 3px;
  height: 3px;
  background: rgba(27, 23, 21, 0.14);
  pointer-events: none;
}

.scroll-meter__fill {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--terracotta);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

/* ---------- 7. 页脚：档案柜 ---------- */
.site-footer {
  background: var(--red-deep);
  color: var(--cream);
  border-top: 6px solid var(--gold);
}

.footer-inner {
  max-width: var(--w-max);
  margin-inline: auto;
  padding: clamp(36px, 6vw, 64px) var(--gutter) clamp(28px, 4vw, 48px);
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.3fr);
  align-items: start;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--cream);
}

.footer-brand__line {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--gold-champagne);
}

.footer-brand__note {
  margin-top: 16px;
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(244, 235, 221, 0.78);
}

.footer-brand__link {
  display: inline-block;
  margin-top: 18px;
  padding-bottom: 3px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-decoration: none;
  color: var(--gold);
  border-bottom: 2px solid var(--gold);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.footer-brand__link:hover { color: var(--paper); border-bottom-color: var(--paper); }

.footer-nav__title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--gold);
  border-bottom: 1px solid var(--line-light);
}

.footer-nav__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.footer-nav__link {
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  text-decoration: none;
  color: rgba(244, 235, 221, 0.86);
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.footer-nav__link:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.footer-contact__title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--gold);
  border-bottom: 1px solid var(--line-light);
}

.footer-contact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.footer-contact__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 13.5px;
  line-height: 1.65;
  color: rgba(244, 235, 221, 0.88);
  overflow-wrap: anywhere;
}

.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  white-space: nowrap;
  color: var(--gold-smoke);
  border: 1px solid rgba(198, 161, 91, 0.45);
  padding: 1px 6px;
}

.footer-meta {
  background: var(--red);
  border-top: 1px solid var(--line-light);
}

.footer-meta__inner {
  max-width: var(--w-max);
  margin-inline: auto;
  padding: 16px var(--gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: rgba(244, 235, 221, 0.8);
}

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-decoration: none;
  color: var(--ink);
  background: var(--paper);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard);
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--ink);
}

.btn:active {
  transform: translate(0, 0);
  box-shadow: 3px 3px 0 var(--ink);
}

.btn--primary {
  background: var(--red);
  color: var(--cream);
  border-color: var(--red-deep);
  box-shadow: 6px 6px 0 var(--red-deep);
}

.btn--primary:hover { box-shadow: 8px 8px 0 var(--gold-bronze); }

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: 6px 6px 0 var(--gold-bronze);
}

.btn--ghost:hover { box-shadow: 8px 8px 0 var(--gold); }

/* ---------- 9. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.breadcrumbs__item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  color: var(--gold-bronze);
}

.breadcrumbs a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.breadcrumbs a:hover {
  color: var(--red);
  border-bottom-color: var(--red);
}

.breadcrumbs [aria-current="page"] {
  color: var(--red);
  font-weight: 700;
}

/* ---------- 10. 网格 ---------- */
.grid {
  display: grid;
  gap: clamp(16px, 2.5vw, 28px);
}

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

/* ---------- 11. 档案卡 ---------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--paper);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.card:hover {
  border-color: var(--gold);
  box-shadow: 8px 8px 0 var(--gold-bronze);
}

.card__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--gold-bronze);
}

.card__title {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 23px);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.card__text {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.card__meta {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}

/* ---------- 12. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
  background: var(--paper);
  border: 2px solid var(--tag-accent, var(--gold-bronze));
}

.tag--z01, .tag--z02 { --tag-accent: var(--gold-bronze); }
.tag--z03, .tag--z04 { --tag-accent: var(--gold-smoke); }
.tag--z05, .tag--z06 { --tag-accent: var(--gold-dark); }
.tag--z07, .tag--z08 { --tag-accent: var(--gold-champagne); }

/* ---------- 13. 图片容器 ---------- */
.media { margin: 0; }

.media__frame {
  position: relative;
  overflow: hidden;
  border: 3px solid var(--ink);
  background-color: var(--red-deep);
  background-image:
    repeating-linear-gradient(45deg, rgba(198, 161, 91, 0.12) 0 2px, transparent 2px 14px),
    repeating-linear-gradient(-45deg, rgba(198, 161, 91, 0.1) 0 2px, transparent 2px 14px);
  box-shadow: 6px 6px 0 var(--gold-bronze);
}

.media__img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

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

.media__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

/* ---------- 14. 正文排版 ---------- */
.prose { max-width: 72ch; }

.prose > * + * { margin-top: 1em; }

.prose h2 {
  margin-top: 1.6em;
  font-size: clamp(22px, 3vw, 30px);
  padding-bottom: 10px;
  border-bottom: 3px solid var(--gold);
}

.prose h3 {
  margin-top: 1.4em;
  font-size: clamp(18px, 2.2vw, 22px);
}

.prose ul, .prose ol {
  padding-left: 1.4em;
  display: grid;
  gap: 6px;
}

.prose ul { list-style: square; }
.prose ol { list-style: decimal; }

.prose li::marker { color: var(--gold-bronze); }

.prose a {
  color: var(--red);
  text-decoration: none;
  border-bottom: 2px solid var(--gold);
}

.prose a:hover { background: rgba(198, 161, 91, 0.24); }

.prose blockquote {
  padding: 12px 20px;
  border-left: 6px solid var(--gold);
  background: var(--paper);
  color: var(--ink-soft);
}

/* ---------- 15. 标签页 / 分段切换 ---------- */
.tabs { display: block; }

.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(20px, 3vw, 28px);
  padding-bottom: 16px;
  border-bottom: 3px solid var(--ink);
}

.tabs__tab {
  appearance: none;
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  background: var(--paper);
  border: 3px solid var(--ink);
  box-shadow: 4px 4px 0 var(--line-strong);
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.tabs__tab:hover {
  background: rgba(198, 161, 91, 0.24);
  color: var(--red);
}

.tabs__tab[aria-selected="true"] {
  background: var(--red);
  color: var(--cream);
  border-color: var(--red-deep);
  box-shadow: 4px 4px 0 var(--gold-bronze);
}

.tabs__panel { padding-top: 4px; }
.tabs__panel[hidden] { display: none; }

.tabs__panel.is-entering { animation: tabsPanelIn 0.22s ease-out both; }

@keyframes tabsPanelIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1080px) {
  .header-upper__note { display: none; }
  .header-cta { margin-left: auto; }
}

@media (max-width: 900px) {
  .header-upper__inner {
    flex-wrap: wrap;
    gap: 10px;
    padding-block: 12px;
  }

  .brand__line { font-size: 10.5px; letter-spacing: 0.1em; }

  .header-lower__inner {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
  }

  .nav-toggle { display: flex; }

  .primary-nav { display: none; width: 100%; }

  .primary-nav[data-open="true"] {
    display: block;
    padding-bottom: 14px;
  }

  .primary-nav__list {
    flex-direction: column;
    border-top: 2px solid var(--line);
  }

  .primary-nav__item { width: 100%; }

  .primary-nav__link {
    width: 100%;
    padding: 14px 6px;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .primary-nav__item:first-child .primary-nav__link { border-top: 0; }

  .primary-nav__link[aria-current="page"]::after {
    left: 6px;
    right: auto;
    bottom: 8px;
    width: 26px;
    height: 3px;
  }

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

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

@media (max-width: 620px) {
  .brand__seal {
    width: 38px;
    height: 38px;
    font-size: 20px;
  }

  .brand__name { font-size: 17px; letter-spacing: 0.12em; }

  .brand__line { display: none; }

  .header-cta { padding: 7px 12px; font-size: 12px; letter-spacing: 0.06em; }

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

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

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

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

  .btn { width: 100%; }
}

/* ---------- 17. 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;
  }

  .btn:hover,
  .nav-toggle:hover,
  .btn:active,
  .nav-toggle:active { transform: none; }

  .tabs__panel.is-entering { animation: none; }
}