/* ==========================================================================
   B体育官方 · 共享站点样式 /assets/site.css
   母题：更衣室战术板 × 数据控制台
   ========================================================================== */

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

* { margin: 0; }

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

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

button, input, select, textarea { font: inherit; color: inherit; }

button { background: none; border: 0; padding: 0; cursor: pointer; }

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

a { color: inherit; text-decoration: none; }

table { border-collapse: collapse; }

address { font-style: normal; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 调色板 */
  --field-ink: #061713;
  --panel-deep: #0C2620;
  --panel-raise: #123A31;
  --hairline: #1E5147;
  --neon-pitch: #3BE8B0;
  --mint-tint: #8CF3CE;
  --signal-flare: #FF5C2B;
  --soft-flare: #FF9A6B;
  --cream: #F3EFE3;
  --cream-dim: #C7C2B4;

  /* 语义别名 */
  --bg: var(--field-ink);
  --surface: var(--panel-deep);
  --surface-raise: var(--panel-raise);
  --line: var(--hairline);
  --accent: var(--neon-pitch);
  --accent-soft: var(--mint-tint);
  --flare: var(--signal-flare);
  --text: var(--cream);
  --text-dim: var(--cream-dim);

  /* 字体 */
  --font-sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "Roboto Mono", "SF Mono", Menlo, Consolas,
    "Courier New", monospace;

  /* 尺度 */
  --shell: 1280px;
  --gutter: 40px;
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-pill: 999px;

  /* 动效 */
  --t-fast: 180ms;
  --t-base: 240ms;
  --ease-out: cubic-bezier(.22, .61, .36, 1);

  /* 阴影 */
  --shadow-panel: 0 12px 32px rgba(0, 0, 0, .38);
  --shadow-pop: 0 22px 48px rgba(0, 0, 0, .55);
}

/* ---------- 3. 基础排版 ---------- */
html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  background-color: var(--bg);
  background-image: linear-gradient(180deg, rgba(30, 81, 71, .30) 0, rgba(6, 23, 19, 0) 540px);
  background-repeat: no-repeat;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--cream);
  text-wrap: balance;
}

h1 { font-size: clamp(34px, 5vw, 60px); line-height: 1.08; }
h2 { font-size: clamp(26px, 3.2vw, 36px); line-height: 1.14; }
h3 { font-size: clamp(19px, 2vw, 24px); }
h4 { font-size: 17px; }

p { max-width: 68ch; text-wrap: pretty; }

p + p { margin-top: 14px; }

a:not([class]) { color: var(--accent-soft); border-bottom: 1px solid rgba(140, 243, 206, .35); }
a:not([class]):hover { color: var(--accent); border-color: var(--accent); }

strong { color: var(--cream); font-weight: 800; }

/* ---------- 4. 焦点与可达性 ---------- */
:focus-visible {
  outline: 2px solid var(--neon-pitch);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(59, 232, 176, .18);
  border-radius: var(--r-xs);
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: var(--r-pill);
  background: var(--neon-pitch);
  color: #04211A;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .04em;
  transform: translateY(-180%);
  transition: transform var(--t-fast) var(--ease-out);
}

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

/* ---------- 5. 布局工具 ---------- */
.shell {
  width: min(100% - (var(--gutter) * 2), var(--shell));
  margin-inline: auto;
}

.section { padding-block: 64px; }
.section:first-child { padding-top: 40px; }

.stack { display: grid; gap: 20px; }
.stack--tight { display: grid; gap: 10px; }

.divider {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--hairline), rgba(30, 81, 71, .1));
}

.grid { display: grid; gap: 20px; }
.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)); }

.split {
  display: grid;
  grid-template-columns: minmax(200px, 4fr) 8fr;
  gap: 32px;
  align-items: start;
}

/* ---------- 6. 面板 / 框景 / 展签 ---------- */
.panel {
  position: relative;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

.panel--raise { background: var(--surface-raise); }

.frame {
  position: relative;
  padding: 28px 26px 30px;
  background: linear-gradient(180deg, var(--surface) 0%, rgba(12, 38, 32, .55) 100%);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

.frame::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 26px;
  width: 64px;
  height: 2px;
  background: var(--accent);
}

.frame::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  border-radius: 0 0 var(--r-md) 0;
  pointer-events: none;
}

.frame__label {
  display: inline-block;
  margin: -42px 0 18px;
  padding: 4px 12px;
  background: var(--field-ink);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent-soft);
}

.label-card {
  padding-left: 14px;
  border-left: 2px solid var(--accent);
}

.label-card__kicker {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent-soft);
}

.label-card__title {
  display: block;
  font-size: 17px;
  font-weight: 800;
  color: var(--cream);
}

.label-card__note {
  display: block;
  margin-top: 4px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-dim);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(18, 58, 49, .6);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent-soft);
}

/* ---------- 7. 数值 ---------- */
.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: -.01em;
}

.stat-card {
  padding: 18px 20px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: transform var(--t-fast) var(--ease-out),
    border-color var(--t-fast) var(--ease-out),
    box-shadow var(--t-fast) var(--ease-out);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(59, 232, 176, .55);
  box-shadow: var(--shadow-panel);
}

.stat-card__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.stat-card__value {
  display: inline-block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 34px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--accent);
}

.stat-card__unit {
  margin-left: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-soft);
}

.stat-card__delta {
  display: inline-block;
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

.stat-card__delta.is-up { color: var(--flare); }
.stat-card__delta.is-down { color: var(--accent-soft); }

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--surface-raise);
  color: var(--cream);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  white-space: nowrap;
  transition: transform var(--t-fast) var(--ease-out),
    border-color var(--t-fast) var(--ease-out),
    background-color var(--t-fast) var(--ease-out),
    color var(--t-fast) var(--ease-out);
}

.btn:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  color: var(--accent);
}

.btn--primary {
  background: var(--neon-pitch);
  border-color: var(--neon-pitch);
  color: #04211A;
}

.btn--primary:hover {
  background: var(--mint-tint);
  border-color: var(--mint-tint);
  color: #04211A;
}

.btn--ghost { background: transparent; }

.btn--sm {
  padding: 8px 15px;
  font-size: 13px;
}

/* ---------- 9. 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-dim);
}

.crumbs li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.crumbs li + li::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 1px;
  background: var(--line);
}

.crumbs a {
  color: var(--text-dim);
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease-out), border-color var(--t-fast) var(--ease-out);
}

.crumbs a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

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

/* ---------- 10. 图片容器 ---------- */
.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background:
    linear-gradient(135deg, rgba(18, 58, 49, .9) 0%, rgba(6, 23, 19, .95) 100%),
    repeating-linear-gradient(90deg, rgba(30, 81, 71, .35) 0 1px, transparent 1px 42px);
}

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

.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 16px 18px 14px;
  background: linear-gradient(180deg, rgba(6, 23, 19, 0) 0%, rgba(6, 23, 19, .94) 78%);
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-dim);
}

/* ---------- 11. 悬浮胶囊页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  padding: 14px 0 16px;
  background: linear-gradient(180deg, rgba(6, 23, 19, .97) 62%, rgba(6, 23, 19, 0) 100%);
}

.site-header__shell {
  width: min(100% - (var(--gutter) * 2), var(--shell));
  margin-inline: auto;
}

.site-header__bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-panel);
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  padding: 4px 6px;
  border-radius: var(--r-sm);
}

.brand__mark {
  position: relative;
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border: 1px solid var(--neon-pitch);
  border-radius: 8px;
  background: rgba(59, 232, 176, .08);
  display: grid;
  place-items: center;
}

.brand__mark::after {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon-pitch);
  box-shadow: 0 0 10px var(--neon-pitch);
}

.brand__text { display: block; }

.brand__name {
  display: block;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: .02em;
  color: var(--cream);
}

.brand__line {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* 主导航 */
.site-nav { margin-left: auto; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__item { position: relative; }

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .09em;
  color: var(--text-dim);
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease-out),
    background-color var(--t-fast) var(--ease-out),
    border-color var(--t-fast) var(--ease-out);
}

.site-nav__link:hover {
  color: var(--accent);
  background: rgba(59, 232, 176, .08);
}

.site-nav__link[aria-current="page"] {
  color: var(--accent);
  background: rgba(59, 232, 176, .10);
  border-color: rgba(59, 232, 176, .45);
  box-shadow: inset 0 -2px 0 rgba(59, 232, 176, .65);
}

.site-nav__caret {
  width: 6px;
  height: 6px;
  margin-top: -3px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform var(--t-fast) var(--ease-out);
}

.site-nav__toggle[aria-expanded="true"] .site-nav__caret {
  transform: rotate(225deg);
  margin-top: 3px;
}

/* 下拉磁贴 */
.mega {
  position: absolute;
  top: calc(100% + 14px);
  right: 0;
  z-index: 90;
  width: min(540px, 74vw);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 12px;
  background: var(--surface-raise);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-pop);
}

.mega[hidden] { display: none; }

.mega__item {
  display: block;
  padding: 11px 13px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  transition: background-color var(--t-fast) var(--ease-out),
    border-color var(--t-fast) var(--ease-out);
}

.mega__item:hover {
  background: rgba(59, 232, 176, .07);
  border-color: rgba(59, 232, 176, .5);
}

.mega__k {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--cream);
}

.mega__n {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-dim);
}

/* 头部工具区 */
.site-header__utility {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--surface-raise);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  transition: border-color var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out);
}

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

.nav-toggle__bars {
  position: relative;
  width: 16px;
  height: 10px;
  flex: 0 0 auto;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--t-fast) var(--ease-out), top var(--t-fast) var(--ease-out),
    bottom var(--t-fast) var(--ease-out);
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  top: 4px;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  bottom: 4px;
  transform: rotate(-45deg);
}

/* 移动导航面板 */
.mobile-nav {
  display: none;
  margin-top: 10px;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-pop);
}

.mobile-nav__list { display: grid; gap: 2px; }

.mobile-nav__link {
  display: block;
  padding: 11px 12px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--cream);
  transition: background-color var(--t-fast) var(--ease-out),
    border-color var(--t-fast) var(--ease-out),
    color var(--t-fast) var(--ease-out);
}

.mobile-nav__link:hover {
  color: var(--accent);
  background: rgba(59, 232, 176, .07);
  border-color: rgba(59, 232, 176, .5);
}

.mobile-nav__link[aria-current="page"] {
  color: var(--accent);
  background: rgba(59, 232, 176, .12);
  border-color: rgba(59, 232, 176, .45);
}

.mobile-nav__kicker {
  margin: 14px 4px 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-soft);
}

.mobile-nav__list--sub .mobile-nav__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
}

/* 滚动进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  overflow: hidden;
  background: rgba(30, 81, 71, .5);
  pointer-events: none;
}

.scroll-progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--flare));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 120ms linear;
}

/* ---------- 12. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 80px;
  background: var(--panel-deep);
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(59, 232, 176, 0) 0%, var(--accent) 45%, var(--flare) 100%);
  opacity: .7;
}

.site-footer__shell {
  width: min(100% - (var(--gutter) * 2), var(--shell));
  margin-inline: auto;
  padding: 52px 0 28px;
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(240px, 4fr) 8fr;
  gap: 44px;
}

.site-footer__brand { display: grid; gap: 16px; align-content: start; }

.site-footer__brand .brand { padding: 0; }

.site-footer__tagline {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-dim);
  max-width: 34ch;
}

.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
}

.site-footer__coltitle {
  margin-bottom: 14px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-soft);
}

.site-footer__list { display: grid; gap: 9px; }

.site-footer__list a {
  font-size: 14px;
  color: var(--text-dim);
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease-out), border-color var(--t-fast) var(--ease-out);
}

.site-footer__list a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.site-footer__contact { display: grid; gap: 8px; }

.site-footer__contact span {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-dim);
  word-break: break-word;
}

.site-footer__bottom {
  display: grid;
  gap: 10px;
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.site-footer__legal {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--text-dim);
  max-width: none;
}

.site-footer__note {
  font-size: 12.5px;
  line-height: 1.65;
  color: rgba(199, 194, 180, .78);
  max-width: none;
}

/* ---------- 13. 显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--t-base) var(--ease-out), transform var(--t-base) var(--ease-out);
}

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

/* ---------- 14. 响应式 ---------- */
@media (max-width: 1120px) {
  :root { --gutter: 28px; }

  .site-nav__link { padding: 9px 10px; letter-spacing: .06em; }
  .site-footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .site-nav { display: none; }
  .nav-toggle { display: inline-flex; }

  .site-header__bar { border-radius: var(--r-md); }

  .mobile-nav {
    display: block;
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
    visibility: hidden;
    overflow: hidden;
    transition: max-height var(--t-base) var(--ease-out),
      opacity var(--t-fast) var(--ease-out),
      padding var(--t-base) var(--ease-out),
      visibility var(--t-base) var(--ease-out);
  }

  .mobile-nav[data-open] {
    max-height: min(74vh, 640px);
    padding-top: 14px;
    padding-bottom: 14px;
    opacity: 1;
    visibility: visible;
    overflow: auto;
  }

  .split { grid-template-columns: minmax(0, 1fr); gap: 24px; }

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

  .site-footer__top { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .site-footer__tagline { max-width: 46ch; }
}

@media (max-width: 640px) {
  :root { --gutter: 18px; }

  body { font-size: 15.5px; }

  .section { padding-block: 40px; }

  .site-header { padding: 10px 0 12px; }

  .panel, .frame { padding: 18px; }

  .frame__label { margin-top: -34px; }

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

  .site-footer__cols { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .site-footer__shell { padding-top: 40px; }
}

@media (max-width: 560px) {
  .site-header__utility .btn { display: none; }
  .nav-toggle__text { display: none; }
  .stat-card__value { font-size: 30px; }
}

/* ---------- 15. 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .btn:hover,
  .stat-card:hover { transform: none; }
}