/* ============================================================
   site.css — 共享层：令牌、重置、中文排版、头部、页脚、基础组件
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --ink: #06110E;
  --panel: #0C211B;
  --track: #14372C;
  --cyan: #47F3D0;
  --mist: #A6FCE8;
  --amber: #F2B84B;
  --paper: #E8F2E9;
  --slate: #8FAEA2;
  --copper: #B77A36;
  --coral: #FF7A6B;

  --line: rgba(183, 122, 54, 0.34);
  --line-soft: rgba(71, 243, 208, 0.16);
  --line-strong: rgba(71, 243, 208, 0.42);

  --radius-pill: 999px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --shadow-panel: 0 24px 60px rgba(0, 0, 0, 0.45);

  --font-head: "HarmonyOS Sans SC", "Source Han Sans CN", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-data: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell-max: 1440px;
  --gutter: clamp(16px, 3.4vw, 48px);
  --rhythm: clamp(40px, 5vw, 72px);
}

/* ---------- 2. 重置 ---------- */
*,
*::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);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 520px at 78% -8%, rgba(71, 243, 208, 0.10), transparent 70%),
    radial-gradient(720px 420px at 10% 108%, rgba(242, 184, 75, 0.07), transparent 72%),
    repeating-linear-gradient(90deg, rgba(71, 243, 208, 0.035) 0 1px, transparent 1px 120px);
}

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

ul, ol { margin: 0; padding: 0; }

button { font: inherit; color: inherit; }

a { color: var(--cyan); }

::selection {
  background: rgba(71, 243, 208, 0.28);
  color: var(--paper);
}

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

#main-content {
  display: block;
  scroll-margin-top: 108px;
}

#main-content:focus { outline: none; }

/* ---------- 3. 中文排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.2;
  color: var(--paper);
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

.h-display {
  font-family: var(--font-head);
  font-size: clamp(30px, 4.4vw, 56px);
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.14;
  color: var(--paper);
  margin: 0;
}

.h2 {
  font-family: var(--font-head);
  font-size: clamp(21px, 2.3vw, 30px);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.24;
  color: var(--paper);
  margin: 0;
}

.h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--paper);
  margin: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--cyan);
  opacity: 0.8;
}

.lede {
  max-width: 62ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--slate);
}

.num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.prose {
  max-width: 68ch;
  color: var(--paper);
  font-size: 16px;
  line-height: 1.78;
}

.prose h2 {
  font-size: clamp(20px, 2vw, 26px);
  margin: 1.8em 0 0.7em;
}

.prose h3 {
  font-size: 17px;
  margin: 1.6em 0 0.6em;
  color: var(--mist);
}

.prose p { margin: 0 0 1.1em; }
.prose ul, .prose ol { margin: 0 0 1.2em; padding-left: 1.3em; }
.prose li { margin-bottom: 0.5em; }
.prose a { color: var(--cyan); text-underline-offset: 3px; }
.prose strong { color: var(--mist); font-weight: 700; }

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

.section { padding-block: var(--rhythm); }
.section--tight { padding-block: calc(var(--rhythm) * 0.6); }

.grid {
  display: grid;
  gap: clamp(16px, 2vw, 28px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(200px, 220px) minmax(0, 1fr); }

/* ---------- 5. 按钮与链接 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.16s ease, background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.btn:active { transform: translateY(1px); }

.btn-accent {
  background: var(--amber);
  border-color: rgba(242, 184, 75, 0.9);
  color: #131A10;
}

.btn-accent:hover {
  background: #FFCA63;
  color: #131A10;
}

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

.btn-ghost:hover {
  background: rgba(71, 243, 208, 0.12);
  color: var(--mist);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.link-arrow:hover {
  color: var(--mist);
  border-bottom-color: var(--line-strong);
}

/* ---------- 6. 头部：悬浮胶囊浮岛 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  padding: 14px var(--gutter) 0;
  background: linear-gradient(180deg, rgba(6, 17, 14, 0.96) 0%, rgba(6, 17, 14, 0.72) 58%, rgba(6, 17, 14, 0) 100%);
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: var(--cyan);
  color: #06110E;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform 0.18s ease;
}

.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid var(--paper);
  outline-offset: 3px;
}

.header-shell {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 26px);
  max-width: var(--shell-max);
  min-height: 64px;
  margin: 0 auto;
  padding: 8px 10px 8px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  background:
    linear-gradient(115deg, rgba(20, 55, 44, 0.94) 0%, rgba(12, 33, 27, 0.97) 46%, rgba(6, 17, 14, 0.98) 100%);
  box-shadow: var(--shadow-panel), inset 0 1px 0 rgba(166, 252, 232, 0.09);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 4px 8px 4px 0;
  border-radius: var(--radius-md);
  color: inherit;
  text-decoration: none;
  flex: 0 0 auto;
}

.brand-mark {
  display: inline-grid;
  grid-auto-flow: column;
  align-items: end;
  gap: 3px;
  width: 32px;
  height: 26px;
}

.brand-mark span {
  display: block;
  width: 6px;
  border-radius: 2px;
  background: var(--cyan);
}

.brand-mark span:nth-child(1) { height: 12px; opacity: 0.5; }
.brand-mark span:nth-child(2) { height: 19px; opacity: 0.78; }
.brand-mark span:nth-child(3) { height: 26px; background: var(--amber); }

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--paper);
}

.brand-descriptor {
  font-family: var(--font-data);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--slate);
  white-space: nowrap;
}

.primary-nav { margin-left: auto; }

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

.nav-item { list-style: none; }

.nav-link {
  position: relative;
  display: inline-block;
  padding: 9px 13px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--slate);
  text-decoration: none;
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.nav-link:hover {
  color: var(--paper);
  background: rgba(71, 243, 208, 0.08);
  border-color: var(--line-soft);
}

.nav-link[aria-current="page"] {
  color: var(--cyan);
  background: rgba(71, 243, 208, 0.1);
  border-color: var(--line-strong);
  font-weight: 700;
}

.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 3px;
  width: 14px;
  height: 2px;
  border-radius: 2px;
  background: var(--amber);
  transform: translateX(-50%);
}

.header-aside {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 6px;
  flex: 0 0 auto;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 6px 13px;
  border: 1px dashed rgba(183, 122, 54, 0.55);
  border-radius: var(--radius-pill);
  background: rgba(183, 122, 54, 0.1);
  font-family: var(--font-data);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--mist);
  white-space: nowrap;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(71, 243, 208, 0.18);
  flex: 0 0 auto;
}

.header-cta { padding: 10px 16px; }

.nav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  background: rgba(71, 243, 208, 0.06);
  cursor: pointer;
}

.nav-toggle:hover { background: rgba(71, 243, 208, 0.14); }

.nav-toggle-bar {
  position: absolute;
  left: 50%;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--paper);
  transform: translateX(-50%);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle-bar:nth-child(1) { top: 15px; }
.nav-toggle-bar:nth-child(2) { top: 20px; }
.nav-toggle-bar:nth-child(3) { top: 25px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateX(-50%) translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateX(-50%) translateY(-5px) rotate(-45deg);
}

.progress-rail {
  position: relative;
  max-width: calc(var(--shell-max) - 6px);
  height: 2px;
  margin: 7px auto 0;
  border-radius: 2px;
  background: rgba(71, 243, 208, 0.1);
  overflow: hidden;
}

.progress-bar {
  display: block;
  width: 0;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--amber) 100%);
  transition: width 0.1s linear;
}

/* ---------- 7. 页脚：四条不等宽轨道 ---------- */
.site-footer {
  margin-top: var(--rhythm);
  padding: clamp(40px, 5vw, 64px) var(--gutter) 0;
  border-top: 1px solid var(--line);
  color: var(--slate);
  background:
    repeating-linear-gradient(90deg, rgba(71, 243, 208, 0.05) 0 1px, transparent 1px 96px),
    linear-gradient(180deg, #081814 0%, #0C211B 68%, #06110E 100%);
}

.footer-shell {
  display: grid;
  grid-template-columns: 1.7fr 0.9fr 0.9fr 1.5fr;
  gap: clamp(24px, 3vw, 56px);
  max-width: var(--shell-max);
  margin: 0 auto;
  padding-bottom: clamp(28px, 3.4vw, 44px);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.brand--footer { padding: 0; }
.brand--footer .brand-name { font-size: 17px; }

.footer-summary {
  max-width: 38ch;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--slate);
}

.footer-meta {
  margin: 0;
  font-family: var(--font-data);
  font-size: 12px;
  line-height: 1.65;
  letter-spacing: 0.02em;
  color: rgba(143, 174, 162, 0.78);
}

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

.footer-col-title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.footer-col-title::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 2px;
  margin-right: 8px;
  vertical-align: middle;
  background: var(--copper);
}

.footer-links {
  display: grid;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-link {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 0.03em;
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.footer-link:hover {
  color: var(--cyan);
  border-bottom-color: var(--line-strong);
}

.contact-list {
  display: grid;
  gap: 12px;
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
}

.contact-item {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.contact-label {
  font-family: var(--font-data);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--copper);
}

.contact-value {
  font-family: var(--font-data);
  font-size: 13px;
  line-height: 1.55;
  letter-spacing: 0.01em;
  color: var(--paper);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 24px;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 16px 0 24px;
  border-top: 1px solid rgba(183, 122, 54, 0.3);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: rgba(143, 174, 162, 0.8);
}

.footer-copy { margin: 0; }
.footer-icp { margin: 0; color: var(--amber); }

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 0 0 0 auto;
  list-style: none;
  padding: 0;
}

.footer-legal-link {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.footer-legal-link:hover {
  color: var(--cyan);
  border-bottom-color: var(--line-strong);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

.breadcrumbs a {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.breadcrumbs a:hover {
  color: var(--cyan);
  border-bottom-color: var(--line-strong);
}

.breadcrumb-sep {
  color: rgba(143, 174, 162, 0.45);
}

.breadcrumb-current { color: var(--mist); }

/* ---------- 9. 数据面板与标签 ---------- */
.data-panel {
  position: relative;
  padding: clamp(18px, 2.2vw, 28px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background:
    repeating-linear-gradient(0deg, rgba(71, 243, 208, 0.04) 0 1px, transparent 1px 34px),
    linear-gradient(160deg, rgba(20, 55, 44, 0.72) 0%, rgba(12, 33, 27, 0.94) 100%);
  box-shadow: inset 0 1px 0 rgba(166, 252, 232, 0.07);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid rgba(183, 122, 54, 0.5);
  border-radius: 4px 10px 4px 10px;
  background: rgba(232, 242, 233, 0.06);
  font-family: var(--font-data);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.tag--amber {
  border-color: rgba(242, 184, 75, 0.55);
  background: rgba(242, 184, 75, 0.1);
  color: var(--amber);
}

/* ---------- 10. 图片容器基础 ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  aspect-ratio: 16 / 9;
  background:
    radial-gradient(circle at 24% 18%, rgba(71, 243, 208, 0.20), transparent 58%),
    radial-gradient(circle at 82% 78%, rgba(242, 184, 75, 0.16), transparent 60%),
    repeating-linear-gradient(115deg, rgba(71, 243, 208, 0.07) 0 1px, transparent 1px 60px),
    linear-gradient(160deg, #0C211B 0%, #06110E 100%);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--wide { aspect-ratio: 21 / 9; }

.media-caption {
  margin: 10px 0 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ---------- 11. 时间轴基础 ---------- */
.timeline {
  position: relative;
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 18px;
  height: 1px;
  background: linear-gradient(90deg, rgba(71, 243, 208, 0.55) 0%, rgba(183, 122, 54, 0.45) 62%, rgba(71, 243, 208, 0.08) 100%);
}

/* ---------- 12. 标签页 ---------- */
.tabs {
  display: grid;
  gap: 20px;
}

.tablist {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 5px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  background: rgba(12, 33, 27, 0.78);
}

.tab {
  appearance: none;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: transparent;
  padding: 9px 16px;
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.05em;
  color: var(--slate);
  cursor: pointer;
  transition: color 0.16s ease, background-color 0.16s ease, border-color 0.16s ease;
}

.tab:hover {
  color: var(--paper);
  background: rgba(71, 243, 208, 0.08);
}

.tab[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #06110E;
  font-weight: 700;
}

.tab-panel[hidden] { display: none; }

.tab-panel {
  padding-top: 4px;
  animation: tab-fade 0.2s ease both;
}

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

/* ---------- 13. 显现动效 ---------- */
.reveal { transition: opacity 0.3s ease, transform 0.3s ease; }

.js-reveal .reveal {
  opacity: 0;
  transform: translateY(14px);
}

.js-reveal .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 14. 响应式 ---------- */
@media (max-width: 1180px) {
  .status-chip { display: none; }
}

@media (max-width: 1080px) {
  .footer-shell { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 960px) {
  .site-header { padding-top: 10px; }

  .header-shell {
    min-height: 58px;
    padding: 8px 10px 8px 14px;
    border-radius: 26px;
    flex-wrap: nowrap;
  }

  .brand-descriptor { display: none; }
  .brand-name { font-size: 16.5px; }

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

  .header-aside { margin-left: auto; }

  .primary-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    display: none;
    margin: 0;
    padding: 12px;
    border: 1px solid var(--line-soft);
    border-radius: 24px;
    background: linear-gradient(160deg, rgba(20, 55, 44, 0.99) 0%, rgba(6, 17, 14, 0.99) 100%);
    box-shadow: var(--shadow-panel);
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    display: block;
    padding: 12px 14px;
    border-radius: 14px;
    font-size: 15px;
  }

  .nav-link[aria-current="page"]::after {
    left: auto;
    right: 16px;
    bottom: 50%;
    transform: translateY(50%);
    width: 12px;
  }

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

  #main-content { scroll-margin-top: 96px; }
}

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

  .footer-shell { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-legal-links { margin-left: 0; }
  .footer-legal { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (max-width: 560px) {
  .header-cta { display: none; }

  .footer-shell { grid-template-columns: 1fr; }

  .h-display { letter-spacing: 0.08em; }

  .breadcrumbs { font-size: 11.5px; }
}

/* ---------- 15. 降低动效偏好 ---------- */
@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;
    scroll-behavior: auto !important;
  }

  .js-reveal .reveal {
    opacity: 1;
    transform: none;
  }
}