/* ==========================================================================
   盈佳国际中心 · 共享样式表 /assets/site.css
   深海蓝档案室 · 细网格骨架 · 琥珀橙编号 + 青瓷绿状态
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 变量
   -------------------------------------------------------------------------- */
:root {
  --ink-950: #08131F;
  --ink-900: #0B1B2E;
  --ink-800: #13294B;
  --ink-700: #1E3A5F;

  --paper: #E8EEF6;
  --ice: #D9E4F0;
  --mist: #8FA6C2;

  --amber: #F2A93B;
  --amber-deep: #C9822A;
  --celadon: #4FA88B;
  --celadon-deep: #2F7A65;
  --archive-red: #D0533B;

  --line: #1E3A5F;
  --line-soft: rgba(143, 166, 194, 0.22);
  --line-faint: rgba(143, 166, 194, 0.12);

  --font-display: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC",
    "Noto Sans SC", "Microsoft YaHei", "Heiti SC", system-ui, sans-serif;
  --font-body: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "SimSun",
    "STSong", Georgia, "Times New Roman", serif;
  --font-mono: "JetBrains Mono", "Cascadia Mono", "Menlo", "Consolas",
    "Noto Sans Mono CJK SC", "Microsoft YaHei", monospace;

  --shell-max: 1280px;
  --gutter: 20px;
  --step: 8px;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--ink-900);
  background-image:
    linear-gradient(to right, var(--line-faint) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-faint) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 { margin: 0; line-height: 1.3; text-wrap: balance; }
p { margin: 0 0 1em; text-wrap: pretty; }
ul, ol { margin: 0 0 1em; padding-left: 1.3em; }
li { margin-bottom: 0.35em; }
img, svg, video { max-width: 100%; height: auto; }
img { display: block; }
a { color: var(--amber); text-underline-offset: 3px; }
a:hover { color: var(--amber-deep); }
strong { color: #fff; font-weight: 700; }
hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }
button { font: inherit; color: inherit; }
code, kbd, samp, pre { font-family: var(--font-mono); }
[hidden] { display: none !important; }

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

/* --------------------------------------------------------------------------
   3. 中文排版基线
   -------------------------------------------------------------------------- */
h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 5.4vw, 60px);
  letter-spacing: -0.015em;
  line-height: 1.16;
  color: #fff;
}

h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 33px);
  letter-spacing: -0.01em;
  color: #fff;
}

h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  color: var(--paper);
}

small { font-size: 14px; color: var(--mist); }

.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;
}

/* --------------------------------------------------------------------------
   4. 布局基元
   -------------------------------------------------------------------------- */
.shell {
  width: min(100% - (var(--gutter) * 2), var(--shell-max));
  margin-inline: auto;
}

.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.prose { max-width: 68ch; }
.prose h2 { margin: 2.2em 0 0.7em; }
.prose h3 { margin: 1.8em 0 0.5em; }
.prose p { margin-bottom: 1.15em; }
.prose > :first-child { margin-top: 0; }

.section-head {
  display: grid;
  gap: 10px;
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.section-head__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.section-head__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 33px);
  letter-spacing: -0.01em;
  color: #fff;
}

.section-head__desc {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  color: var(--mist);
}

/* --------------------------------------------------------------------------
   5. 跳过链接 / 滚动进度
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 500;
  padding: 10px 18px;
  background: var(--amber);
  color: var(--ink-900);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.06em;
  text-decoration: none;
  border: 1px solid var(--amber);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
  color: var(--ink-900);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--amber) 0%, var(--celadon) 100%);
  z-index: 400;
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   6. 头部
   -------------------------------------------------------------------------- */
.site-header {
  position: relative;
  z-index: 60;
  background: var(--ink-900);
}

/* 6.1 上层品牌说明条 */
.header-utility {
  background: var(--ink-950);
  border-bottom: 1px solid var(--line-soft);
}

.header-utility__in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 66px;
  padding-block: 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: inherit;
  min-width: 0;
}

.brand:hover { color: inherit; }

.brand__mark {
  flex: none;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--amber);
  color: var(--amber);
  background: rgba(242, 169, 59, 0.06);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1;
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.05em;
  line-height: 1.15;
  color: #fff;
}

.brand__line {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  line-height: 1.3;
  color: var(--mist);
}

.utility-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: none;
}

.utility-note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  white-space: nowrap;
}

.index-toggle {
  appearance: none;
  border: 1px solid var(--amber);
  background: var(--amber);
  color: var(--ink-900);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.12em;
  padding: 9px 18px;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.index-toggle:hover {
  background: var(--amber-deep);
  border-color: var(--amber-deep);
}

.index-toggle[aria-expanded="true"] {
  background: transparent;
  color: var(--amber);
}

/* 6.2 下层栏目导航 */
.header-nav {
  background: var(--ink-800);
  border-bottom: 1px solid var(--line);
}

.header-nav__in {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 58px;
}

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

.nav-list {
  display: flex;
  align-items: stretch;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list > li { margin: 0; }

.nav-link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 17px 13px;
  color: var(--paper);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.05em;
  white-space: nowrap;
  transition: color 0.18s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 0;
  height: 2px;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.22s ease;
}

.nav-link__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
  transition: transform 0.18s ease, color 0.18s ease;
}

.nav-link:hover { color: #fff; }
.nav-link:hover .nav-link__num { transform: translateY(4px); color: var(--amber); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-link[aria-current="page"] { color: #fff; }
.nav-link[aria-current="page"] .nav-link__num { color: var(--amber); }
.nav-link[aria-current="page"]::after { transform: scaleX(1); }

.nav-hint {
  margin: 0;
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--mist);
  white-space: nowrap;
}

/* 6.3 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  appearance: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--paper);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.14em;
  padding: 10px 15px;
  cursor: pointer;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.nav-toggle:hover { border-color: var(--amber); color: var(--amber); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
  flex: none;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s ease, top 0.2s ease;
}

.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

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

/* 6.4 总索引抽屉 */
.site-index {
  background: var(--ink-950);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 28px 56px rgba(4, 10, 19, 0.6);
  padding-block: 26px 34px;
}

.site-index__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.site-index__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.site-index__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.index-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.index-grid > li { margin: 0; }

.index-card {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 16px;
  background: var(--ink-900);
  color: var(--paper);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.04em;
  transition: background 0.18s ease, color 0.18s ease;
}

.index-card__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.index-card:hover {
  background: var(--ink-800);
  color: var(--amber);
}

/* --------------------------------------------------------------------------
   7. 页脚
   -------------------------------------------------------------------------- */
.site-footer {
  margin-top: 88px;
  background: var(--ink-950);
  border-top: 1px solid var(--line);
  color: var(--paper);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.7fr repeat(4, minmax(0, 1fr));
  gap: 44px 32px;
  padding-block: 58px 42px;
}

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

.footer-col__title {
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.footer-brand__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.05em;
  color: #fff;
}

.footer-brand__line {
  margin: 0 0 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--celadon);
}

.footer-brand__meta {
  margin: 0 0 6px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.footer-links > li { margin: 0; }

.footer-links a {
  color: var(--ice);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.6;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.footer-links a:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.footer-contact { gap: 15px; }

.footer-contact > li {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.footer-contact__value {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ice);
  word-break: break-word;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 26px;
  padding-block: 20px 30px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.footer-base p { margin: 0; }
.footer-base__copy { color: var(--paper); }
.footer-base__note { color: var(--celadon); }

/* --------------------------------------------------------------------------
   8. 通用按钮
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.08em;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn--primary {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink-900);
}

.btn--primary:hover {
  background: var(--amber-deep);
  border-color: var(--amber-deep);
  color: var(--ink-900);
}

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

.btn--ghost:hover {
  border-color: var(--amber);
  color: var(--amber);
}

.btn--quiet {
  background: transparent;
  border-color: rgba(79, 168, 139, 0.55);
  color: var(--celadon);
}

.btn--quiet:hover {
  background: var(--celadon);
  border-color: var(--celadon);
  color: var(--ink-950);
}

/* --------------------------------------------------------------------------
   9. 面包屑
   -------------------------------------------------------------------------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
}

.breadcrumb li {
  margin: 0;
  display: flex;
  align-items: center;
}

.breadcrumb li + li::before {
  content: "/";
  margin: 0 10px;
  color: var(--line);
}

.breadcrumb a {
  color: var(--mist);
  text-decoration: none;
}

.breadcrumb a:hover { color: var(--amber); }

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

/* --------------------------------------------------------------------------
   10. 基础组件
   -------------------------------------------------------------------------- */
/* 10.1 卡片 */
.card {
  position: relative;
  background: var(--ink-800);
  border: 1px solid var(--line);
  padding: 26px 24px 24px;
}

.card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
  margin-bottom: 10px;
}

.card__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* 10.2 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.7;
  white-space: nowrap;
}

.tag--amber { color: var(--amber); }
.tag--celadon { color: var(--celadon); }
.tag--mist { color: var(--mist); }
.tag--archive { color: var(--archive-red); }

/* 10.3 图片容器 */
.figure {
  margin: 0;
  position: relative;
  background: var(--ink-800);
  border: 1px solid var(--line);
  overflow: hidden;
}

.figure__media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: #0E2138;
  background-image:
    linear-gradient(160deg, rgba(242, 169, 59, 0.12) 0%, rgba(242, 169, 59, 0) 44%),
    linear-gradient(24deg, rgba(79, 168, 139, 0.14) 0%, rgba(79, 168, 139, 0) 58%),
    repeating-linear-gradient(90deg, var(--line-faint) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg, var(--line-faint) 0 1px, transparent 1px 48px);
}

.figure__media > img,
.figure__media > svg,
.figure__media > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure__media--wide { aspect-ratio: 21 / 9; }
.figure__media--square { aspect-ratio: 1 / 1; }
.figure__media--portrait { aspect-ratio: 3 / 4; }

.figure__caption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: var(--mist);
}

/* 10.4 更新记录条目 */
.log {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.log__item {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  gap: 6px 26px;
  padding: 22px 4px;
  border-bottom: 1px solid var(--line);
}

.log__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1.9;
  color: var(--mist);
  padding-top: 3px;
}

.log__title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.5;
  color: var(--paper);
}

.log__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* 10.5 可展开面板 */
.panel {
  background: var(--ink-800);
  border: 1px solid var(--line);
}

.panel + .panel { margin-top: -1px; }

.panel__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  text-align: left;
  appearance: none;
  background: transparent;
  border: 0;
  padding: 19px 22px;
  color: var(--paper);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: color 0.18s ease, background 0.18s ease;
}

.panel__trigger:hover { color: var(--amber); background: rgba(30, 58, 95, 0.4); }

.panel__trigger::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--amber);
  border-bottom: 2px solid var(--amber);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.panel__trigger[aria-expanded="true"]::after { transform: rotate(-135deg); }

.panel__body {
  padding: 2px 22px 24px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ice);
}

.panel__body > :last-child { margin-bottom: 0; }

/* --------------------------------------------------------------------------
   11. 进场动画
   -------------------------------------------------------------------------- */
.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}

.js-reveal [data-reveal].is-visible {
  opacity: 1;
  transform: none;
  transition: opacity 0.5s ease, transform 0.5s ease;
}

/* --------------------------------------------------------------------------
   12. 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1180px) {
  .nav-hint { display: none; }
}

@media (max-width: 1080px) {
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 38px 30px;
    padding-block: 46px 34px;
  }
  .footer-col--brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  :root { --gutter: 16px; }

  body {
    font-size: 16px;
    background-attachment: scroll;
  }

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

  .header-nav__in {
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    padding-block: 12px;
  }

  .primary-nav {
    display: none;
    flex: 1 0 100%;
    order: 3;
    border-top: 1px solid var(--line);
    padding-top: 6px;
  }

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

  .nav-list {
    flex-direction: column;
    gap: 0;
  }

  .nav-link {
    padding: 15px 2px;
    border-bottom: 1px solid var(--line);
    white-space: normal;
  }

  .nav-link::after {
    left: 0;
    right: auto;
    width: 30px;
  }

  .log__item { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .log__meta { padding-top: 0; }
}

@media (max-width: 640px) {
  .header-utility__in {
    gap: 14px;
    min-height: 60px;
  }

  .brand__line { display: none; }
  .brand__name { font-size: 18px; }
  .brand__mark { width: 38px; height: 38px; font-size: 18px; }
  .utility-note { display: none; }
  .index-toggle { padding: 8px 14px; letter-spacing: 0.08em; }

  .index-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .index-card { padding: 13px 14px; font-size: 14px; }

  .site-footer { margin-top: 64px; }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .footer-base {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .card { padding: 22px 18px 20px; }
  .panel__trigger { padding: 17px 18px; font-size: 16px; }
  .panel__body { padding: 2px 18px 20px; }
}

/* --------------------------------------------------------------------------
   13. 动效偏好
   -------------------------------------------------------------------------- */
@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] {
    opacity: 1;
    transform: none;
  }
}