/* ==========================================================================
   财神到棋牌 · 共享样式 /assets/site.css
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; }
img, svg, video, picture { max-width: 100%; display: block; }
h1, h2, h3, h4, h5, h6, p, figure, blockquote { margin: 0; }
ul, ol { margin: 0; padding: 0; }
button { font: inherit; color: inherit; background: none; border: 0; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. Tokens ---------- */
:root {
  --c-red: #C8102E;
  --c-red-light: #FF6F7D;
  --c-red-deep: #4A0F1C;
  --c-gold: #E8B45A;
  --c-gold-line: #6E5B3A;
  --c-purple: #241533;
  --c-ink: #0E0B14;
  --c-jade: #2FB6A8;
  --c-electric: #4FE3CE;
  --c-ivory: #F7F3EA;
  --c-sand: #B9AFA5;

  --text: #EDE7DD;
  --text-soft: var(--c-sand);
  --text-dark: #1A1420;
  --line: rgba(110, 91, 58, .55);
  --line-soft: rgba(110, 91, 58, .28);

  --font-display: "Source Han Serif CN Heavy", "Source Han Serif SC", "Noto Serif SC", "Songti SC", STSong, serif;
  --font-heading: "Source Han Sans CN", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Source Han Sans CN", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "LXGW WenKai Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --header-h: 104px;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow-1: 0 2px 6px rgba(0, 0, 0, .40);
  --shadow-2: 0 10px 26px rgba(0, 0, 0, .52);
  --ease: cubic-bezier(.22, .61, .36, 1);
  --dur: .18s;
}

/* ---------- 3. 中文排版基座 ---------- */
body {
  background: var(--c-ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0;
  margin-bottom: .6em;
  color: var(--c-ivory);
}
h1 { font-family: var(--font-display); font-weight: 900; font-size: clamp(2.6rem, 7vw, 5.2rem); line-height: 1.05; letter-spacing: -.02em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.6rem); }
h3 { font-size: 1.25rem; }
p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }
strong { color: var(--c-gold); font-weight: 700; }
a { color: var(--c-gold); }
::selection { background: var(--c-red); color: var(--c-ivory); }

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

/* ---------- 4. 布局容器与节奏 ---------- */
.container {
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 40px);
}
#main-content { display: block; }
#main-content > :first-child { padding-top: calc(var(--header-h) + 32px); }

.section { padding-block: clamp(48px, 7vw, 96px); }
.section--purple { background: var(--c-purple); }
.section--ink { background: var(--c-ink); }
.section--edge { border-top: 1px solid var(--line); }
.section--ivory { background: var(--c-ivory); color: var(--text-dark); }
.section--ivory h1,
.section--ivory h2,
.section--ivory h3 { color: #170F22; }
.section--ivory a { color: var(--c-red); }
.section--ivory .section-num { color: var(--c-red); }
.section--ivory .stat__label { color: #6B5F55; }
.section--ivory .stat__value { color: var(--c-red-deep); }

.section-head { display: flex; flex-direction: column; gap: 10px; margin-bottom: clamp(28px, 3.6vw, 48px); }
.section-head__title { margin-bottom: 0; }
.section-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  letter-spacing: .12em;
  color: var(--c-gold);
  font-variant-numeric: tabular-nums;
}
.divider {
  height: 1px;
  border: 0;
  margin: clamp(32px, 4vw, 56px) 0;
  background: linear-gradient(90deg, var(--c-gold-line), rgba(110, 91, 58, 0));
}
.prose { max-width: 72ch; }
.prose > * + * { margin-top: 1em; }
.prose ul, .prose ol { padding-left: 1.4em; margin-top: 1em; }
.prose li { margin-bottom: .45em; }
.prose h3 { margin-top: 1.6em; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .9375rem;
  letter-spacing: .04em;
  line-height: 1.2;
  cursor: pointer;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), color var(--dur) var(--ease);
}
.btn--primary {
  background: linear-gradient(180deg, #D81B3A, var(--c-red));
  color: var(--c-ivory);
  border-color: rgba(232, 180, 90, .7);
  box-shadow: 0 2px 0 var(--c-red-deep), 0 6px 18px rgba(200, 16, 46, .28);
}
.btn--primary:hover {
  transform: translateY(-2px);
  border-color: #F3CE86;
  box-shadow: 0 3px 0 var(--c-red-deep), 0 12px 26px rgba(200, 16, 46, .38);
}
.btn--primary:active { transform: translateY(0); background: var(--c-red-deep); }
.btn--ghost {
  background: transparent;
  border-color: var(--c-gold-line);
  color: var(--c-gold);
}
.btn--ghost:hover { transform: translateY(-2px); border-color: var(--c-gold); background: rgba(232, 180, 90, .08); }
.btn--sm { padding: 8px 16px; font-size: .875rem; }
.btn--block { width: 100%; }

/* ---------- 6. 卡片 / 栅格 / 标签 / 数据 ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}
@media (min-width: 768px) { .bento { gap: 20px; } }
.bento > * { grid-column: span 12; min-width: 0; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.card {
  background: linear-gradient(160deg, rgba(36, 21, 51, .94), rgba(14, 11, 20, .94));
  border: 1px solid var(--c-gold-line);
  border-radius: var(--radius);
  padding: clamp(18px, 2.2vw, 28px);
  box-shadow: var(--shadow-1);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--c-gold);
  box-shadow: var(--shadow-2);
}
.card--focus { border-color: var(--c-gold); background: linear-gradient(150deg, rgba(74, 15, 28, .95), rgba(36, 21, 51, .95)); }
.card--jade { border-color: rgba(47, 182, 168, .55); }
.card--flat:hover { transform: none; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: .75rem;
  letter-spacing: .06em;
  border: 1px solid var(--c-gold-line);
  color: var(--c-gold);
  background: rgba(232, 180, 90, .08);
}
.tag--jade { border-color: rgba(47, 182, 168, .5); color: var(--c-jade); background: rgba(47, 182, 168, .10); }
.tag--red { border-color: rgba(255, 111, 125, .5); color: var(--c-red-light); background: rgba(200, 16, 46, .16); }

.stat { display: flex; flex-direction: column; gap: 4px; }
.stat__label { font-size: .8125rem; letter-spacing: .04em; color: var(--c-sand); }
.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: clamp(1.75rem, 3.4vw, 2.75rem);
  line-height: 1;
  color: var(--c-electric);
}
.stat__unit { font-family: var(--font-body); font-size: .875rem; color: var(--c-sand); margin-left: 6px; }
.stat--gold .stat__value { color: var(--c-gold); }

/* ---------- 7. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: .8125rem;
  color: var(--c-sand);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--c-sand); transition: color var(--dur) var(--ease); }
.breadcrumb a:hover { color: var(--c-gold); }
.breadcrumb__sep { color: var(--c-gold-line); }

/* ---------- 8. 图片容器（供页面阶段放图） ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--c-gold-line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--c-purple), var(--c-ink));
  aspect-ratio: 16 / 10;
  width: 100%;
}
.media-frame > img,
.media-frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(36, 21, 51, 0) 52%, rgba(14, 11, 20, .78));
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--plain::after { display: none; }
.media-frame__caption {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 12px;
  z-index: 2;
  font-size: .8125rem;
  color: var(--c-ivory);
  letter-spacing: .02em;
}

/* ---------- 9. 装饰：铜钱环 ---------- */
.coin-ring {
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 1px solid rgba(232, 180, 90, .22);
  pointer-events: none;
}
.coin-ring::before {
  content: "";
  position: absolute;
  inset: 26px;
  border-radius: 50%;
  border: 1px dashed rgba(232, 180, 90, .18);
}
.coin-ring::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 34px;
  height: 34px;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(232, 180, 90, .30);
  border-radius: 4px;
}

/* ---------- 10. Skip link ---------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -72px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--c-gold);
  color: var(--c-ink);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .875rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 0; color: var(--c-ink); }

/* ---------- 11. 头部 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: linear-gradient(180deg, rgba(14, 11, 20, .80), rgba(14, 11, 20, .30) 62%, rgba(14, 11, 20, 0));
  transition: background-color .28s var(--ease), box-shadow .28s var(--ease);
}
.site-header[data-scrolled="true"] {
  background: var(--c-purple);
  border-bottom: 1px solid var(--c-gold-line);
  box-shadow: 0 14px 30px rgba(0, 0, 0, .48);
}
.header-rule {
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-red), var(--c-red-deep) 55%, var(--c-red));
}
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--c-red), var(--c-gold) 55%, var(--c-electric));
  pointer-events: none;
}
.header-main { padding-block: 14px; transition: padding .24s var(--ease); }
.site-header[data-scrolled="true"] .header-main { padding-block: 8px; }
.header-inner { display: flex; align-items: center; gap: 24px; }

/* 品牌 */
.brand { display: inline-flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand__seal {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.35rem;
  line-height: 1;
  color: var(--c-gold);
  background: linear-gradient(145deg, var(--c-red), var(--c-red-deep));
  border: 1px solid var(--c-gold);
  border-radius: 6px;
  box-shadow: inset 0 0 0 1px rgba(232, 180, 90, .25), 0 2px 6px rgba(0, 0, 0, .45);
  transform: rotate(-4deg);
  transition: transform .2s var(--ease);
}
.brand:hover .brand__seal { transform: rotate(0deg) translateY(-1px); }
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.15rem;
  letter-spacing: .02em;
  color: var(--c-ivory);
}
.brand__tag { font-size: .6875rem; letter-spacing: .18em; color: var(--c-gold); }
.brand--footer .brand__name { font-size: 1.3rem; }

/* 主导航 */
.site-nav { margin-left: auto; }
.site-nav__list { display: flex; align-items: center; gap: 2px; list-style: none; }
.site-nav__item { list-style: none; }
.site-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  border-bottom: 1px solid transparent;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .9375rem;
  color: var(--c-ivory);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.site-nav__idx {
  font-family: var(--font-mono);
  font-size: .625rem;
  font-variant-numeric: tabular-nums;
  color: var(--c-gold-line);
  transition: color var(--dur) var(--ease);
}
.site-nav__link:hover { color: var(--c-gold); background: rgba(232, 180, 90, .08); }
.site-nav__link[aria-current="page"] { color: var(--c-gold); border-bottom-color: var(--c-red); }
.site-nav__link[aria-current="page"] .site-nav__idx { color: var(--c-red-light); }

.header-side { display: flex; align-items: center; gap: 12px; }

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--c-gold-line);
  border-radius: var(--radius-sm);
  color: var(--c-ivory);
  font-family: var(--font-heading);
  font-size: .8125rem;
  letter-spacing: .08em;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-toggle:hover { border-color: var(--c-gold); color: var(--c-gold); }
.nav-toggle__bars { display: inline-flex; flex-direction: column; gap: 4px; width: 18px; }
.nav-toggle__bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav-toggle.is-active .nav-toggle__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-active .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle.is-active .nav-toggle__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* 常驻入口带（桌面） */
.header-sub__inner {
  display: flex;
  align-items: center;
  gap: 18px;
  padding-block: 7px;
  border-top: 1px solid var(--line-soft);
  font-size: .8125rem;
}
.header-sub__title { font-size: .625rem; letter-spacing: .16em; color: var(--c-sand); }
.header-sub__link {
  color: var(--c-ivory);
  border-bottom: 1px dashed var(--c-gold-line);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.header-sub__link:hover { color: var(--c-gold); border-bottom-color: var(--c-gold); }
.header-sub__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .75rem;
  color: var(--c-sand);
}

/* 抽屉内附加区（桌面隐藏） */
.nav-extra { display: none; }
.nav-extra__title { font-size: .625rem; letter-spacing: .16em; color: var(--c-sand); }
.nav-extra__link {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  color: var(--c-ivory);
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
}
.nav-extra__link:hover { color: var(--c-gold); }

/* ---------- 12. 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--c-purple);
  border-top: 1px solid var(--c-gold-line);
  color: var(--text);
  padding-top: clamp(40px, 5vw, 64px);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--c-red), var(--c-red-deep) 45%, var(--c-gold));
}
.footer-inner {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(28px, 4vw, 44px) clamp(20px, 3vw, 32px);
}
.footer-brand { grid-column: span 5; display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }
.footer-brand__note { max-width: 34ch; font-size: .9375rem; line-height: 1.7; color: var(--c-sand); }
.footer-lines { grid-column: span 7; }
.footer-col { grid-column: span 4; }
.footer-contact {
  grid-column: span 12;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-block: clamp(20px, 2.5vw, 28px);
}
.footer-title {
  font-family: var(--font-heading);
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--c-gold);
  margin-bottom: 14px;
}
.footer-lines__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 24px; list-style: none; }
.footer-lines__item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0;
  font-size: .9375rem;
  color: var(--text);
  border-bottom: 1px solid var(--line-soft);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.footer-lines__item:hover { color: var(--c-gold); border-bottom-color: var(--c-gold); }
.footer-lines__idx {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .6875rem;
  color: var(--c-gold-line);
}
.footer-links { display: flex; flex-direction: column; gap: 8px; list-style: none; }
.footer-links a {
  display: inline-block;
  padding-bottom: 2px;
  font-size: .9375rem;
  color: var(--c-sand);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.footer-links a:hover { color: var(--c-gold); border-bottom-color: var(--c-gold-line); }
.footer-contact__list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  list-style: none;
}
.footer-contact__list li { display: flex; flex-direction: column; gap: 4px; }
.footer-contact__key { font-size: .75rem; letter-spacing: .12em; color: var(--c-gold); }
.footer-contact__val { font-size: .9375rem; color: var(--c-ivory); line-height: 1.6; }
.footer-contact__val--num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; letter-spacing: .02em; }
.footer-contact__note { margin-top: 16px; font-size: .8125rem; color: var(--c-sand); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  align-items: baseline;
  padding-block: 22px 30px;
}
.footer-legal { font-size: .8125rem; color: var(--c-sand); }
.footer-legal--muted { color: rgba(185, 175, 165, .72); }
.footer-legal a { color: var(--c-sand); border-bottom: 1px solid var(--c-gold-line); transition: color var(--dur) var(--ease); }
.footer-legal a:hover { color: var(--c-gold); }

/* ---------- 13. 显现与计数 ---------- */
html.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .45s var(--ease), transform .45s var(--ease);
}
html.js-reveal [data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 14. 响应式 ---------- */
@media (max-width: 1080px) {
  .site-nav__link { padding: 8px 9px; font-size: .875rem; }
  .footer-brand { grid-column: span 12; }
  .footer-lines { grid-column: span 12; }
  .footer-col { grid-column: span 4; }
}

@media (max-width: 900px) {
  :root { --header-h: 68px; }
  .site-header { z-index: 130; }
  .header-main { padding-block: 12px; }
  .header-side .btn { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-sub { display: none; }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 120;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: calc(var(--header-h) + 24px) clamp(20px, 6vw, 32px) 40px;
    background: linear-gradient(170deg, var(--c-purple), var(--c-ink) 72%);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s;
  }
  .site-nav[data-open="true"] { opacity: 1; visibility: visible; transform: none; }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav__item { border-bottom: 1px solid var(--line-soft); }
  .site-nav__link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 4px;
    font-size: 1.125rem;
    border-bottom: 0;
    border-radius: 0;
  }
  .site-nav__idx { order: 2; font-size: .75rem; }
  .nav-extra { display: flex; flex-direction: column; gap: 10px; margin-top: 28px; }
  body.nav-open { overflow: hidden; }

  .col-3, .col-4, .col-5 { grid-column: span 6; }
  .col-6, .col-7, .col-8 { grid-column: span 12; }

  .footer-col { grid-column: span 6; }
  .footer-contact__list { grid-template-columns: 1fr; gap: 14px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 620px) {
  .brand__tag { display: none; }
  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8 { grid-column: span 12; }
  .footer-brand, .footer-lines, .footer-col, .footer-contact { grid-column: span 12; }
  .footer-lines__list { grid-template-columns: 1fr; }
  .coin-ring { width: 150px; height: 150px; }
}

/* ---------- 15. 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  html.js-reveal [data-reveal] { opacity: 1; transform: none; }
  .card:hover { transform: none; }
  .btn:hover { transform: none; }
  .brand:hover .brand__seal { transform: rotate(-4deg); }
}