/* ==========================================================================
   8体育手机版 — 共享样式表 /assets/site.css
   夜场墨绿基色 · 荧光青数据层 · 赛事亮橙信号 · 大圆角资料卡
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 8rem;
}

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

ul, ol { padding: 0; }
ul[class], ol[class] { list-style: none; }

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

a { color: inherit; }

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
}

button { cursor: pointer; }

/* ---------- 2. 设计变量 ---------- */
:root {
  /* 色板 */
  --m8-night: #041F19;
  --m8-panel: #0A3328;
  --m8-turf: #135B46;
  --m8-cyan: #35F2D0;
  --m8-orange: #FF8A3D;
  --m8-orange-soft: #FFB27A;
  --m8-warm: #F7F3E7;
  --m8-mist: #A9C2B7;
  --m8-deep: #02120F;
  --m8-blue: #5AD7FF;

  /* 字体 */
  --m8-font-head: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
  --m8-font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  --m8-font-num: 'IBM Plex Mono', 'Roboto Mono', 'SFMono-Regular', 'Menlo', monospace;

  /* 尺寸 */
  --m8-wrap: 1200px;
  --m8-gutter: clamp(1rem, 4vw, 2.5rem);
  --m8-radius-lg: 28px;
  --m8-radius-md: 18px;
  --m8-radius-sm: 12px;

  /* 线条 */
  --m8-line: rgba(169, 194, 183, 0.22);
  --m8-line-soft: rgba(169, 194, 183, 0.14);
  --m8-line-strong: rgba(53, 242, 208, 0.38);

  /* 动效 */
  --m8-ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --m8-slant: 12deg;
}

/* ---------- 3. 中文排版基底 ---------- */
body {
  min-height: 100vh;
  background-color: var(--m8-night);
  color: var(--m8-warm);
  font-family: var(--m8-font-body);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-wrap: pretty;
}

h1, h2, h3, h4, h5 {
  font-family: var(--m8-font-head);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--m8-warm);
}

h1 { font-size: clamp(2.25rem, 6vw, 4.5rem); font-weight: 900; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3.6vw, 2.75rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.6rem); }
h4 { font-size: 1.0625rem; }

p { text-wrap: pretty; }

strong { font-weight: 700; color: var(--m8-warm); }

::selection {
  background-color: rgba(53, 242, 208, 0.28);
  color: var(--m8-warm);
}

.num {
  font-family: var(--m8-font-num);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}

#main-content:focus { outline: none; }
#main-content:focus-visible {
  outline: 2px solid var(--m8-cyan);
  outline-offset: 8px;
}

/* ---------- 4. 焦点状态 ---------- */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--m8-cyan);
  outline-offset: 3px;
}

/* ---------- 5. Skip link ---------- */
.skip-link {
  position: fixed;
  top: -120px;
  left: 1rem;
  z-index: 400;
  padding: 0.7rem 1.25rem;
  border-radius: 999px;
  background-color: var(--m8-cyan);
  color: var(--m8-deep);
  font-family: var(--m8-font-head);
  font-size: 0.875rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
  box-shadow: 0 12px 30px -12px rgba(53, 242, 208, 0.9);
  transition: top 0.18s var(--m8-ease);
}

.skip-link:focus,
.skip-link:focus-visible { top: 1rem; }

/* ---------- 6. 布局容器 ---------- */
.wrap {
  width: min(calc(100% - var(--m8-gutter) * 2), var(--m8-wrap));
  margin-inline: auto;
}

/* ---------- 7. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  isolation: isolate;
  background-color: var(--m8-night);
  background-image:
    radial-gradient(620px 150px at 8% -30%, rgba(53, 242, 208, 0.17), transparent 72%),
    radial-gradient(520px 130px at 94% -40%, rgba(255, 138, 61, 0.15), transparent 74%),
    linear-gradient(180deg, #073027 0%, var(--m8-night) 82%);
  border-bottom: 1px solid rgba(19, 91, 70, 0.95);
  box-shadow: 0 20px 44px -34px rgba(0, 0, 0, 0.95);
}

/* --- 上层：品牌说明与自查入口 --- */
.header-rail {
  border-bottom: 1px dashed var(--m8-line);
}

.rail-inner {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2vw, 1.5rem);
  padding-block: 0.6rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--m8-warm);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  font-family: var(--m8-font-num);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1;
  color: var(--m8-deep);
  background: linear-gradient(145deg, var(--m8-cyan) 0%, #8CF6C4 100%);
  border-radius: 12px 12px 12px 4px;
  box-shadow:
    0 0 0 1px rgba(53, 242, 208, 0.55),
    0 10px 24px -14px rgba(53, 242, 208, 0.95);
  transition: transform 0.24s var(--m8-ease);
}

.brand:hover .brand-mark { transform: translateY(-2px) rotate(-4deg); }

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--m8-font-head);
  font-size: 1.0625rem;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.brand-tag {
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--m8-mist);
}

.rail-helper {
  margin-inline-start: auto;
  min-width: 0;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--m8-mist);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rail-cta {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1.05rem;
  border-radius: 999px;
  font-family: var(--m8-font-head);
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--m8-deep);
  background: linear-gradient(135deg, var(--m8-orange-soft) 0%, var(--m8-orange) 100%);
  box-shadow: 0 8px 20px -10px rgba(255, 138, 61, 0.95);
  transition: transform 0.2s var(--m8-ease), box-shadow 0.2s var(--m8-ease);
}

.rail-cta::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--m8-deep);
  opacity: 0.55;
}

.rail-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px -10px rgba(255, 138, 61, 1);
}

/* --- 下层：主栏目导航 --- */
.header-nav { position: relative; }

.nav-inner {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-block: 0.3rem;
}

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

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem;
}

.nav-item { display: block; }

.nav-link {
  display: block;
  padding: 0.58rem 0.95rem;
  border-radius: 999px;
  font-family: var(--m8-font-head);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--m8-mist);
  text-decoration: none;
  white-space: nowrap;
  transition:
    color 0.18s var(--m8-ease),
    background-color 0.18s var(--m8-ease),
    box-shadow 0.18s var(--m8-ease);
}

.nav-link:hover {
  color: var(--m8-warm);
  background-color: rgba(53, 242, 208, 0.1);
}

.nav-link[aria-current="page"] {
  color: var(--m8-deep);
  background-color: var(--m8-cyan);
  box-shadow: 0 10px 22px -16px rgba(53, 242, 208, 1);
}

/* --- 移动端开关 --- */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  padding: 0.62rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--m8-line-strong);
  background-color: rgba(53, 242, 208, 0.07);
  color: var(--m8-warm);
  font-family: var(--m8-font-head);
  font-size: 0.9375rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  transition: background-color 0.18s var(--m8-ease), border-color 0.18s var(--m8-ease);
}

.nav-toggle:hover { background-color: rgba(53, 242, 208, 0.14); }

.nav-toggle-label { line-height: 1; }

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background-color: var(--m8-cyan);
  transition: background-color 0.2s var(--m8-ease);
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background-color: var(--m8-cyan);
  transition: transform 0.26s var(--m8-ease);
}

.nav-toggle-bars::before { top: -7px; }
.nav-toggle-bars::after { top: 7px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background-color: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 8vw, 6rem);
  overflow: hidden;
  color: var(--m8-mist);
  background-color: var(--m8-deep);
  background-image:
    radial-gradient(760px 300px at 84% -12%, rgba(255, 138, 61, 0.14), transparent 72%),
    radial-gradient(680px 300px at 4% -4%, rgba(53, 242, 208, 0.12), transparent 74%),
    linear-gradient(180deg, #062922 0%, var(--m8-deep) 92%);
  border-top: 1px solid rgba(19, 91, 70, 0.95);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(53, 242, 208, 0.85) 18%,
    rgba(53, 242, 208, 0.1) 42%,
    rgba(255, 138, 61, 0.9) 74%,
    transparent 100%
  );
  opacity: 0.7;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

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

.brand--footer .brand-mark {
  width: 36px;
  height: 36px;
  font-size: 1.1rem;
}

.brand--footer .brand-name { font-size: 1rem; }

.footer-summary {
  margin-top: 1rem;
  max-width: 34ch;
  font-size: 0.875rem;
  line-height: 1.8;
  color: rgba(169, 194, 183, 0.9);
}

.footer-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1.15rem;
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--m8-line-strong);
  background-color: rgba(53, 242, 208, 0.07);
  color: var(--m8-cyan);
  font-family: var(--m8-font-head);
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: background-color 0.18s var(--m8-ease), color 0.18s var(--m8-ease);
}

.footer-cta:hover {
  background-color: rgba(53, 242, 208, 0.18);
  color: var(--m8-warm);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2.5rem);
  min-width: 0;
}

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

.footer-col-title {
  margin-bottom: 0.9rem;
  font-family: var(--m8-font-head);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--m8-cyan);
}

.footer-list {
  display: grid;
  gap: 0.5rem;
}

.footer-list a {
  display: inline-block;
  font-size: 0.9375rem;
  color: var(--m8-mist);
  text-decoration: none;
  transition: color 0.18s var(--m8-ease), transform 0.18s var(--m8-ease);
}

.footer-list a:hover {
  color: var(--m8-warm);
  transform: translateX(3px);
}

.footer-contact {
  display: grid;
  gap: 0.7rem;
}

.footer-contact-row {
  display: grid;
  gap: 0.12rem;
  min-width: 0;
}

.footer-contact dt {
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: rgba(169, 194, 183, 0.68);
}

.footer-contact dd {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--m8-warm);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.footer-contact dd.num { color: var(--m8-cyan); }

.footer-note {
  margin-top: 1rem;
  max-width: 40ch;
  font-size: 0.75rem;
  line-height: 1.8;
  color: rgba(169, 194, 183, 0.78);
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1.5rem;
  padding-block: 1.15rem;
  border-top: 1px solid var(--m8-line-soft);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: rgba(169, 194, 183, 0.85);
}

.footer-area {
  padding: 0.15rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(53, 242, 208, 0.3);
  color: var(--m8-cyan);
  font-weight: 700;
}

.footer-icp { color: rgba(169, 194, 183, 0.8); }

.footer-copy { margin-inline-start: auto; }

/* ---------- 9. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.78rem 1.5rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--m8-font-head);
  font-size: 0.9375rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 0.18s var(--m8-ease),
    background-color 0.18s var(--m8-ease),
    border-color 0.18s var(--m8-ease),
    color 0.18s var(--m8-ease);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--signal {
  background-color: var(--m8-orange);
  color: var(--m8-deep);
  box-shadow: 0 12px 26px -16px rgba(255, 138, 61, 1);
}

.btn--signal:hover { background-color: var(--m8-orange-soft); }

.btn--cyan {
  background-color: var(--m8-cyan);
  color: var(--m8-deep);
  box-shadow: 0 12px 26px -16px rgba(53, 242, 208, 1);
}

.btn--cyan:hover { background-color: #7DF7E0; }

.btn--ghost {
  border-color: var(--m8-line-strong);
  background-color: rgba(53, 242, 208, 0.06);
  color: var(--m8-cyan);
}

.btn--ghost:hover {
  background-color: rgba(53, 242, 208, 0.16);
  color: var(--m8-warm);
}

/* ---------- 10. 标签 / 胶囊 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.8rem;
  border: 1px solid rgba(53, 242, 208, 0.35);
  border-radius: 999px;
  background-color: rgba(53, 242, 208, 0.08);
  color: var(--m8-cyan);
  font-family: var(--m8-font-head);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  line-height: 1.6;
}

.chip--orange {
  border-color: rgba(255, 138, 61, 0.42);
  background-color: rgba(255, 138, 61, 0.13);
  color: var(--m8-orange-soft);
}

.chip--flat {
  border-color: var(--m8-line);
  background-color: rgba(247, 243, 231, 0.04);
  color: var(--m8-mist);
}

/* ---------- 11. 面包屑 ---------- */
.breadcrumb {
  font-size: 0.8125rem;
  color: var(--m8-mist);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
}

.breadcrumb li { display: flex; align-items: center; gap: 0.4rem; }

.breadcrumb li + li::before {
  content: "/";
  color: rgba(169, 194, 183, 0.45);
}

.breadcrumb a {
  color: var(--m8-mist);
  text-decoration: none;
  transition: color 0.18s var(--m8-ease);
}

.breadcrumb a:hover { color: var(--m8-cyan); }

.breadcrumb [aria-current="page"] { color: var(--m8-warm); font-weight: 600; }

/* ---------- 12. 正文容器 ---------- */
.prose { max-width: 68ch; }

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

.prose p {
  color: var(--m8-mist);
  font-size: 1rem;
  line-height: 1.85;
}

.prose h2,
.prose h3 { margin-top: 2em; margin-bottom: 0.5em; }

.prose ul,
.prose ol {
  padding-inline-start: 1.25rem;
  color: var(--m8-mist);
}

.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.35em; }

.prose a {
  color: var(--m8-cyan);
  text-underline-offset: 0.22em;
}

.prose strong { color: var(--m8-warm); }

.prose blockquote {
  padding: 0.9rem 1.2rem;
  border-inline-start: 3px solid var(--m8-orange);
  border-radius: 0 var(--m8-radius-sm) var(--m8-radius-sm) 0;
  background-color: rgba(10, 51, 40, 0.7);
  color: var(--m8-mist);
}

/* ---------- 13. 区块开场 ---------- */
.section { padding-block: clamp(2.5rem, 6vw, 5rem); }

.section-head {
  display: grid;
  gap: 0.6rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
  max-width: 72ch;
}

.section-num {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--m8-font-num);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--m8-cyan);
}

.section-num::before {
  content: "";
  width: 28px;
  height: 1px;
  background-color: var(--m8-cyan);
  opacity: 0.75;
}

.section-title { font-size: clamp(1.75rem, 4vw, 2.75rem); }

.section-lead {
  max-width: 62ch;
  font-size: clamp(0.9375rem, 1.4vw, 1.0625rem);
  line-height: 1.8;
  color: var(--m8-mist);
}

/* ---------- 14. 资料卡 ---------- */
.card {
  position: relative;
  min-width: 0;
  padding: clamp(1.1rem, 2.4vw, 1.75rem);
  border: 1px solid rgba(19, 91, 70, 0.9);
  border-radius: var(--m8-radius-lg);
  background-image: linear-gradient(160deg, var(--m8-panel) 0%, #06271F 100%);
  background-color: var(--m8-panel);
}

.card--slant { overflow: hidden; }

.card--slant::before {
  content: "";
  position: absolute;
  inset: 0 0 0 auto;
  width: 104px;
  pointer-events: none;
  background-image: linear-gradient(160deg, rgba(255, 138, 61, 0.28), rgba(255, 138, 61, 0) 72%);
  clip-path: polygon(42% 0, 100% 0, 100% 100%, 0 100%);
}

.card > * { position: relative; z-index: 1; }

/* ---------- 15. 数据指标 ---------- */
.stat { display: grid; gap: 0.2rem; }

.stat-num {
  font-family: var(--m8-font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1;
  color: var(--m8-cyan);
}

.stat-label {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--m8-mist);
}

/* ---------- 16. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(19, 91, 70, 0.85);
  border-radius: var(--m8-radius-md);
  background-color: var(--m8-panel);
  background-image:
    radial-gradient(120% 90% at 18% 0%, rgba(53, 242, 208, 0.2), transparent 62%),
    radial-gradient(90% 80% at 92% 100%, rgba(255, 138, 61, 0.16), transparent 66%),
    linear-gradient(150deg, #0A3328 0%, #02120F 100%);
}

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

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

/* ---------- 17. 网格 ---------- */
.grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.75rem);
  grid-template-columns: minmax(0, 1fr);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* ---------- 18. 目录 ---------- */
.toc {
  display: grid;
  gap: 0.35rem;
  padding-block: 1rem;
  border-block: 1px solid var(--m8-line);
}

.toc-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.toc-list a {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--m8-line);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--m8-mist);
  text-decoration: none;
  transition:
    color 0.18s var(--m8-ease),
    border-color 0.18s var(--m8-ease),
    background-color 0.18s var(--m8-ease);
}

.toc-list a:hover {
  color: var(--m8-warm);
  border-color: var(--m8-line-strong);
}

.toc-list a[aria-current="true"] {
  color: var(--m8-deep);
  background-color: var(--m8-cyan);
  border-color: var(--m8-cyan);
}

/* ---------- 19. 滚动显现 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 0.5s var(--m8-ease),
    transform 0.5s var(--m8-ease);
}

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

/* ---------- 20. 响应式：平板 ---------- */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-summary { max-width: none; }
  .footer-nav { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ---------- 21. 响应式：移动端导航 ---------- */
@media (max-width: 900px) {
  html { scroll-padding-top: 7rem; }

  .rail-helper { display: none; }

  .nav-toggle { display: flex; }

  .nav-inner { flex-wrap: wrap; gap: 0.35rem; padding-block: 0.45rem; }

  .primary-nav {
    flex: 1 1 100%;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition:
      max-height 0.34s var(--m8-ease),
      opacity 0.26s var(--m8-ease),
      visibility 0.34s linear;
  }

  .primary-nav[data-open] {
    max-height: min(70vh, 460px);
    overflow-y: auto;
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.2rem;
    padding-block: 0.5rem 0.9rem;
  }

  .nav-link {
    padding: 0.8rem 1rem;
    border-radius: 14px;
    font-size: 1rem;
    background-color: rgba(53, 242, 208, 0.04);
  }

  .nav-link[aria-current="page"] { border-radius: 14px; }

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

/* ---------- 22. 响应式：小屏 ---------- */
@media (max-width: 780px) {
  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 560px) {
  body { font-size: 15px; }

  .brand-tag { display: none; }
  .brand-mark { width: 34px; height: 34px; font-size: 1.05rem; }
  .brand-name { font-size: 1rem; }
  .rail-cta { padding: 0.4rem 0.85rem; font-size: 0.75rem; }

  .footer-nav { grid-template-columns: minmax(0, 1fr); }
  .footer-meta { gap: 0.5rem 1rem; }
  .footer-copy { margin-inline-start: 0; }

  .section { padding-block: 2.25rem; }
}

/* ---------- 23. 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;
  }

  html.js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .primary-nav { transition: none !important; }
  .btn:hover,
  .rail-cta:hover,
  .footer-list a:hover { transform: none !important; }
}