/* ==========================================================================
   大嬴体育 · 共享站点样式 /assets/site.css
   深空黑底 + 荧光绿锚点 + 玻璃层与实色层并置
   ========================================================================== */

/* ---------- reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ul, ol {
  margin: 0;
}

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

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

button { font: inherit; color: inherit; background: none; border: 0; }

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

table { border-collapse: collapse; width: 100%; }

:focus { outline: none; }

:focus-visible {
  outline: 2px solid #B8FF3C;
  outline-offset: 2px;
  border-radius: 3px;
}

/* ---------- 变量 ---------- */
:root {
  --ink: #06080B;
  --ink-2: #0E1218;
  --ink-3: #141A22;
  --glass: rgba(255, 255, 255, 0.08);
  --glass-strong: rgba(255, 255, 255, 0.14);
  --lime: #B8FF3C;
  --lime-deep: #7CD100;
  --blue: #3AA0FF;
  --orange: #FF7A2F;
  --fg: #F4F7FA;
  --fg-dim: #96A0AE;
  --line: #2A3138;

  --header-h: 76px;
  --pad: clamp(16px, 4.2vw, 44px);
  --maxw: 1280px;
  --radius: 4px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --font-sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
}

/* ---------- 基础排版 ---------- */
body {
  background-color: var(--ink);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

[data-section],
[id] { scroll-margin-top: calc(var(--header-h) + 24px); }

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

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 999;
  padding: 12px 20px;
  background: var(--lime);
  color: var(--ink);
  font-weight: 700;
  font-size: 14px;
  border-radius: var(--radius);
  transition: top 160ms var(--ease);
}

.skip-link:focus {
  top: 12px;
}

/* ---------- 页头 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 200;
  background: transparent;
  transition: background-color 240ms var(--ease),
    box-shadow 240ms var(--ease);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(6, 8, 11, 0.9) 0%,
    rgba(6, 8, 11, 0.45) 60%,
    rgba(6, 8, 11, 0) 100%
  );
  opacity: 1;
  transition: opacity 240ms var(--ease);
  pointer-events: none;
}

.site-header[data-scrolled]::before { opacity: 0; }

.site-header[data-scrolled] {
  background-color: rgba(6, 8, 11, 0.94);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line);
}

.site-header__bar {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.6vw, 36px);
  transition: height 240ms var(--ease);
}

.site-header[data-scrolled] .site-header__bar { height: 62px; }

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
}

.brand__mark {
  width: 12px;
  height: 26px;
  flex: 0 0 auto;
  border-radius: 2px;
  background: linear-gradient(
    180deg,
    var(--lime) 0 32%,
    var(--lime-deep) 32% 58%,
    var(--blue) 58% 80%,
    #2A3138 80% 100%
  );
  transition: height 240ms var(--ease);
}

.site-header[data-scrolled] .brand__mark { height: 22px; }

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand__name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.brand__tag {
  font-size: 11px;
  color: var(--fg-dim);
  letter-spacing: 0.04em;
  margin-top: 3px;
  white-space: nowrap;
}

/* 导航 */
.nav {
  flex: 1 1 auto;
  min-width: 0;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(2px, 0.9vw, 12px);
}

.nav__link {
  position: relative;
  display: inline-block;
  padding: 9px 11px;
  border-radius: 3px;
  font-size: 14px;
  font-weight: 500;
  color: var(--fg-dim);
  white-space: nowrap;
  transition: color 160ms var(--ease), background-color 160ms var(--ease);
}

.nav__link:hover {
  color: var(--fg);
  background-color: var(--glass);
}

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

.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background-color: var(--lime);
}

/* 页头动作区 */
.header__actions {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background-color: var(--glass);
  cursor: pointer;
  font-size: 13px;
  color: var(--fg);
  transition: border-color 160ms var(--ease), background-color 160ms var(--ease);
}

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

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 16px;
}

.nav-toggle__bars i {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--lime);
  border-radius: 2px;
  transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}

.site-header[data-open] .nav-toggle__bars i:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-header[data-open] .nav-toggle__bars i:nth-child(2) { opacity: 0; }

.site-header[data-open] .nav-toggle__bars i:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* 滚动进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background-color: transparent;
  overflow: hidden;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--lime-deep), var(--lime) 70%, var(--blue));
}

/* ---------- 通用容器与区块 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.section {
  padding: clamp(48px, 7vw, 104px) 0;
  position: relative;
}

.section--tight { padding: clamp(32px, 4.5vw, 64px) 0; }

.section__head {
  display: flex;
  align-items: baseline;
  gap: clamp(12px, 2.4vw, 28px);
  flex-wrap: wrap;
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background-color: var(--lime);
  border-radius: 2px;
}

.section-num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5.4vw, 62px);
  font-weight: 700;
  line-height: 0.9;
  color: var(--lime);
  letter-spacing: -0.03em;
}

/* ---------- 文本层级 ---------- */
.display {
  font-family: var(--font-sans);
  font-size: clamp(40px, 8.4vw, 118px);
  font-weight: 900;
  line-height: 0.94;
  letter-spacing: -0.02em;
  color: var(--fg);
  text-transform: none;
}

.h2 {
  font-size: clamp(24px, 3.4vw, 40px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--fg);
}

.h3 {
  font-size: clamp(18px, 2.1vw, 23px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.lede {
  font-size: clamp(16px, 1.7vw, 19px);
  line-height: 1.8;
  color: var(--fg-dim);
  max-width: 38em;
}

.prose {
  font-size: 17px;
  line-height: 1.8;
  color: var(--fg-dim);
  max-width: 38em;
}

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

.prose strong { color: var(--fg); font-weight: 700; }

.prose a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose a:hover { color: var(--lime); }

.serif-accent {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.mono { font-family: var(--font-mono); }

.rule {
  height: 1px;
  width: 100%;
  background-color: var(--line);
  border: 0;
}

/* ---------- 网格 ---------- */
.grid {
  display: grid;
  gap: clamp(14px, 2vw, 26px);
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 720px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1080px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--offset { align-items: start; }
  .grid--offset > :nth-child(even) { margin-top: clamp(18px, 3.2vw, 52px); }
}

/* ---------- 卡片 ---------- */
.card {
  position: relative;
  padding: clamp(20px, 2.6vw, 32px);
  background-color: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 200ms var(--ease), transform 200ms var(--ease),
    background-color 200ms var(--ease);
}

.card:hover {
  border-color: var(--fg-dim);
  transform: translateY(-2px);
}

.card--glass {
  background-color: var(--glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-color: rgba(255, 255, 255, 0.12);
}

.card--anchor { border-left: 3px solid var(--lime); }

.card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--lime);
  margin-bottom: 14px;
}

.card__title {
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--fg);
  margin-bottom: 10px;
}

.card__body {
  font-size: 15px;
  line-height: 1.78;
  color: var(--fg-dim);
}

/* ---------- 数据统计 ---------- */
.stat {
  padding: clamp(18px, 2.4vw, 28px) 0;
  border-top: 1px solid var(--line);
}

.stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 56px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--lime);
}

.stat__num--blue { color: var(--blue); }

.stat__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--fg-dim);
}

/* ---------- 徽标与标签 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background-color: var(--glass);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--fg-dim);
  white-space: nowrap;
}

.badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
}

.badge--info { color: var(--blue); border-color: rgba(58, 160, 255, 0.4); }

.badge--alert { color: var(--orange); border-color: rgba(255, 122, 47, 0.45); }

.badge--live { color: var(--lime); border-color: rgba(184, 255, 60, 0.4); }

.chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.chips::-webkit-scrollbar { display: none; }

.chip {
  flex: 0 0 auto;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background-color: var(--ink-2);
  font-size: 13px;
  color: var(--fg-dim);
  cursor: pointer;
  transition: color 160ms var(--ease), border-color 160ms var(--ease),
    background-color 160ms var(--ease);
}

.chip:hover { color: var(--fg); border-color: var(--fg-dim); }

.chip.is-active,
.chip[aria-pressed="true"] {
  background-color: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
  font-weight: 600;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background-color 160ms var(--ease), color 160ms var(--ease),
    border-color 160ms var(--ease), transform 160ms var(--ease);
}

.btn--primary {
  background-color: var(--lime);
  color: var(--ink);
}

.btn--primary:hover { background-color: var(--lime-deep); }

.btn--ghost {
  background-color: var(--glass);
  color: var(--fg);
  border-color: var(--line);
}

.btn--ghost:hover {
  border-color: var(--fg-dim);
  background-color: var(--glass-strong);
}

.btn--sm { padding: 9px 16px; font-size: 13px; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 600;
  color: var(--lime);
  transition: gap 180ms var(--ease), color 180ms var(--ease);
}

.link-arrow::after { content: "→"; }

.link-arrow:hover { gap: 12px; color: var(--lime-deep); }

/* ---------- 折叠面板 ---------- */
.fold {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--ink-2);
  overflow: hidden;
  transition: border-color 200ms var(--ease);
}

.fold + .fold { margin-top: 10px; }

.fold:hover { border-color: #3A434D; }

.fold[data-open] { border-color: rgba(184, 255, 60, 0.5); }

.fold__head {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px clamp(16px, 2.4vw, 26px);
  text-align: left;
  cursor: pointer;
  color: var(--fg);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

.fold__head:hover { background-color: var(--glass); }

.fold__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--lime);
  flex: 0 0 auto;
}

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

.fold__arrow {
  flex: 0 0 auto;
  width: 11px;
  height: 11px;
  border-right: 2px solid var(--fg-dim);
  border-bottom: 2px solid var(--fg-dim);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 240ms var(--ease), border-color 240ms var(--ease);
}

.fold[data-open] .fold__arrow {
  transform: rotate(-135deg) translate(-2px, -2px);
  border-color: var(--lime);
}

.fold__body {
  padding: 0 clamp(16px, 2.4vw, 26px) 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--fg-dim);
  max-width: 42em;
}

.fold__body[hidden] { display: none; }

.fold[data-open] .fold__body:not([hidden]) {
  animation: foldIn 240ms var(--ease) both;
}

@keyframes foldIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--fg-dim);
  padding-top: calc(var(--header-h) + 20px);
}

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

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: #46505B;
}

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

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

/* ---------- 图片容器基础规则 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background-color: var(--ink-2);
  background-image: linear-gradient(
    135deg,
    rgba(20, 26, 34, 1) 0%,
    rgba(10, 14, 19, 1) 60%
  );
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.16;
}

.media > img,
.media__img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media__ph {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 140px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: #55606C;
}

.media__cap {
  position: relative;
  z-index: 2;
  display: block;
  padding: 12px 14px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fg-dim);
  border-top: 1px solid var(--line);
  background-color: rgba(6, 8, 11, 0.72);
}

.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media--banner { aspect-ratio: 21 / 9; }

@media (max-width: 719px) {
  .media--banner { aspect-ratio: 16 / 10; }
  .media--tall { aspect-ratio: 4 / 5; }
}

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: clamp(56px, 8vw, 120px);
  background-color: var(--ink-2);
  border-top: 1px solid var(--line);
  color: var(--fg);
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 96px;
  height: 3px;
  background-color: var(--lime);
}

.site-footer__inner {
  padding-top: clamp(40px, 5.4vw, 72px);
  padding-bottom: clamp(28px, 4vw, 52px);
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: clamp(26px, 3.6vw, 56px);
}

.footer__brand { max-width: 30em; }

.footer__logo {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.footer__desc {
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fg-dim);
}

.footer__note {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.7;
  color: #7B8593;
  max-width: 34em;
}

.footer__title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime);
  margin-bottom: 16px;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 11px;
  font-size: 14px;
  color: var(--fg-dim);
}

.footer__links a {
  transition: color 160ms var(--ease), padding-left 160ms var(--ease);
}

.footer__links a:hover {
  color: var(--lime);
  padding-left: 4px;
}

.footer__links--plain li {
  display: flex;
  gap: 10px;
  line-height: 1.65;
  word-break: break-word;
}

.footer__key {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #6B7480;
  padding-top: 2px;
  min-width: 34px;
}

.footer__bottom {
  border-top: 1px solid var(--line);
  background-color: #0A0D12;
}

.footer__bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-top: 20px;
  padding-bottom: 20px;
}

.footer__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: #7B8593;
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 13px;
  color: var(--fg-dim);
}

.footer__legal a:hover { color: var(--lime); }

/* ---------- 章节索引高亮 ---------- */
[data-section-link].is-current {
  color: var(--lime);
}

[data-section-link].is-current::before {
  background-color: var(--lime);
  transform: scaleX(1);
}

/* ---------- 显现动画 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 560ms var(--ease), transform 560ms var(--ease);
}

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

/* ---------- 响应式：平板与手机 ---------- */
@media (max-width: 1080px) {
  .footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  :root { --header-h: 66px; }

  .brand__tag { display: none; }

  .header__actions { display: none; }

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

  .nav {
    position: fixed;
    left: 0;
    right: 0;
    top: var(--header-h);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    padding: 10px var(--pad) 26px;
    background-color: rgba(6, 8, 11, 0.97);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 240ms var(--ease), transform 240ms var(--ease),
      visibility 240ms var(--ease);
  }

  .site-header[data-open] .nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

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

  .nav__link {
    display: block;
    padding: 14px 12px;
    font-size: 16px;
    border-radius: var(--radius);
  }

  .nav__link[aria-current="page"]::after {
    left: 12px;
    right: auto;
    width: 22px;
    bottom: 8px;
  }

  .grid--offset > :nth-child(even) { margin-top: 0; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }

  .section__head { gap: 10px; }

  .footer__grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }

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

  .footer__legal { gap: 14px; }

  .card { padding: 18px; }

  .fold__head { font-size: 15px; padding: 16px 16px; }
}

/* ---------- 无障碍：减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

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

  .scroll-progress__bar { transition: none; }
}