/* ============================================================
   博澳娱乐 · 共享样式 /assets/site.css
   夜航档案：切角面板 · 斜线轨迹 · 双色高亮
   ============================================================ */

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

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

body {
  margin: 0;
  background: #0B1B3A;
  color: #F2F6FF;
  font-family: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0 0 1em; }
button { font: inherit; }
a { color: #34E0E0; }

/* ---------- tokens ---------- */
:root {
  --night: #0B1B3A;
  --deep: #142A55;
  --star: #1E3A6E;
  --cyan: #34E0E0;
  --orange: #FF8A3D;
  --violet: #7B5CFF;
  --lilac: #B9A8FF;
  --cloud: #F2F6FF;
  --mist: #9FB0CC;
  --aurora: #4BE39B;

  --font-display: Georgia, "Songti SC", "STSong", "SimSun", "Times New Roman", serif;
  --font-sans: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --w-max: 1320px;
  --pad: 28px;
  --r-gap: 24px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --dur: 240ms;
  --shadow: 0 18px 50px rgba(3, 9, 22, .45);
}

/* ---------- 背景氛围层 ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58vw 48vh at 84% -8%, rgba(52, 224, 224, .14), transparent 62%),
    radial-gradient(52vw 44vh at -8% 22%, rgba(123, 92, 255, .16), transparent 66%),
    radial-gradient(44vw 34vh at 62% 108%, rgba(255, 138, 61, .10), transparent 72%);
}

/* ---------- 基础排版 ---------- */
h1, h2, h3, h4, .sec-title, .brand__name, .footer-brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.22;
  margin: 0 0 .5em;
  color: var(--cloud);
}

h1 { font-size: clamp(2.1rem, 4.6vw, 3.6rem); font-weight: 900; }
h2 { font-size: clamp(1.6rem, 3vw, 2.35rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.45rem); }

a { text-decoration: none; }
a:hover { color: var(--cyan); }

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

::selection { background: rgba(52, 224, 224, .3); color: #fff; }

/* ---------- 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.page-intro {
  padding: 168px 0 48px;
  position: relative;
}

.layout-aside {
  display: grid;
  grid-template-columns: minmax(210px, 2.3fr) 7.7fr;
  gap: 56px;
  align-items: start;
}

.section {
  position: relative;
  padding: 76px 0;
}

.section + .section { border-top: 1px solid rgba(30, 58, 110, .6); }

.sec-head {
  position: relative;
  padding-left: 26px;
  margin-bottom: 32px;
}

.sec-head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(52, 224, 224, 0));
}

.sec-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.sec-sub {
  color: var(--mist);
  font-size: 15px;
  max-width: 62ch;
  margin: 0;
}

.prose { max-width: 68ch; }
.prose p { margin: 0 0 1.15em; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--cyan); font-weight: 700; }

.lead {
  font-size: 1.12rem;
  color: #DCE5F7;
  max-width: 60ch;
}

.hairline {
  height: 1px;
  border: 0;
  margin: 48px 0;
  background: linear-gradient(90deg, transparent, rgba(52, 224, 224, .55), transparent);
}

/* ---------- 索引栏 ---------- */
.rail {
  position: sticky;
  top: 112px;
  align-self: start;
}

.rail__title {
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--lilac);
  margin: 0 0 14px;
}

.rail__list {
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--star);
}

.index-link {
  display: block;
  padding: 9px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--mist);
  font-size: 14px;
  letter-spacing: .02em;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.index-link:hover {
  color: var(--cloud);
  background: rgba(52, 224, 224, .07);
}

.index-link.is-active {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(52, 224, 224, .16), rgba(52, 224, 224, 0));
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: .72em 1.35em;
  border: 1px solid var(--star);
  background: transparent;
  color: var(--cloud);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .04em;
  cursor: pointer;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.btn:hover { color: var(--cloud); border-color: var(--cyan); background: rgba(52, 224, 224, .12); }

.btn--primary { background: var(--cyan); border-color: var(--cyan); color: #061224; }
.btn--primary:hover { background: #5CECEC; border-color: #5CECEC; color: #061224; }

.btn--orange { background: var(--orange); border-color: var(--orange); color: #2A1000; }
.btn--orange:hover { background: #FFA666; border-color: #FFA666; color: #2A1000; }

.btn--ghost { border-color: rgba(52, 224, 224, .5); color: var(--cyan); }
.btn--ghost:hover { color: #061224; background: var(--cyan); }

.btn--sm { padding: .5em .95em; font-size: 13px; }

/* ---------- 标签胶囊 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: .4em;
  padding: .28em .78em;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  line-height: 1.6;
  white-space: nowrap;
}

.tag--cyan { color: var(--cyan); border-color: rgba(52, 224, 224, .45); background: rgba(52, 224, 224, .1); }
.tag--orange { color: var(--orange); border-color: rgba(255, 138, 61, .45); background: rgba(255, 138, 61, .1); }
.tag--violet { color: var(--lilac); border-color: rgba(123, 92, 255, .55); background: linear-gradient(120deg, rgba(123, 92, 255, .3), rgba(185, 168, 255, .1)); }
.tag--aurora { color: var(--aurora); border-color: rgba(75, 227, 155, .45); background: rgba(75, 227, 155, .1); }

/* ---------- 切角与面板 ---------- */
.cut-8 { clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px); }
.cut-20 { clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px); }

.panel {
  background: var(--deep);
  border: 1px solid var(--star);
  padding: 28px;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.panel--tall { padding: 40px; clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px); }

.card {
  position: relative;
  background: linear-gradient(160deg, rgba(30, 58, 110, .55), rgba(20, 42, 85, .9));
  border: 1px solid var(--star);
  padding: 26px 24px;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.card:hover {
  border-color: rgba(52, 224, 224, .6);
  transform: translateY(-2px);
  background: linear-gradient(160deg, rgba(52, 224, 224, .12), rgba(20, 42, 85, .95));
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.card__title { font-size: 1.2rem; margin: 0 0 .5em; }

.card__text { color: var(--mist); font-size: 15px; margin: 0; }

/* ---------- 横向主题带 ---------- */
.band {
  background: linear-gradient(90deg, rgba(20, 42, 85, .95), rgba(11, 27, 58, .85));
  border-top: 1px solid var(--star);
  border-bottom: 1px solid var(--star);
  padding: 18px 0;
  overflow: hidden;
}

.band__track {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding: 0 var(--pad);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.band__item {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: .5em;
  padding: .5em 1em;
  border: 1px solid var(--star);
  background: rgba(11, 27, 58, .7);
  color: var(--cloud);
  font-size: 14px;
  letter-spacing: .04em;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.band__item:hover { border-color: var(--cyan); color: var(--cyan); }

/* ---------- 数据块 ---------- */
.stat { border-left: 2px solid var(--star); padding-left: 16px; }
.stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 700;
  color: var(--cyan);
  line-height: 1.1;
}
.stat__label { font-size: 13px; letter-spacing: .08em; color: var(--mist); }

/* ---------- 网格 ---------- */
.grid { display: grid; gap: var(--r-gap); }
.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)); }

/* ---------- 媒体框（页面阶段放置图片） ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: linear-gradient(140deg, var(--star), var(--night));
  border: 1px solid var(--star);
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

.media-frame__img {
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

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

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 18px;
  background: linear-gradient(0deg, rgba(5, 12, 26, .92), rgba(5, 12, 26, 0));
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cloud);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--mist);
  margin-bottom: 20px;
}

.breadcrumb li { display: flex; align-items: center; gap: 8px; }
.breadcrumb li::after { content: "/"; color: var(--star); }
.breadcrumb li:last-child::after { content: ""; }
.breadcrumb a { color: var(--mist); }
.breadcrumb a:hover { color: var(--cyan); }

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: -120px;
  left: 16px;
  z-index: 200;
  background: var(--cyan);
  color: #061224;
  padding: .7em 1.1em;
  font-size: 14px;
  font-weight: 700;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: top 180ms var(--ease);
}

.skip-link:focus { top: 14px; color: #061224; }

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

/* ---------- 头部 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.site-header.is-scrolled {
  background: rgba(11, 27, 58, .95);
  border-bottom-color: rgba(30, 58, 110, .9);
  box-shadow: 0 12px 34px rgba(2, 7, 18, .5);
}

.site-header__inner {
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 12px var(--pad);
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--cloud);
  flex: 0 0 auto;
}
.brand:hover { color: var(--cloud); }

.brand__mark {
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  clip-path: polygon(0 0, 100% 0, 100% 60%, 60% 100%, 0 100%);
  box-shadow: 0 0 0 1px rgba(52, 224, 224, .35);
}

.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name { font-size: 20px; font-weight: 900; letter-spacing: .02em; margin: 0; }
.brand__sub {
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--mist);
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.nav__eyebrow { display: none; }
.nav__cta { display: none; }

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

.nav__link {
  position: relative;
  display: block;
  padding: 10px 14px;
  color: var(--mist);
  font-size: 14px;
  letter-spacing: .06em;
  transition: color var(--dur) var(--ease);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 5px;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}

.nav__link:hover,
.nav__link:focus-visible { color: var(--cloud); }
.nav__link:hover::after { transform: scaleX(1); }

.nav__link[aria-current="page"] { color: var(--cyan); }
.nav__link[aria-current="page"]::after { transform: scaleX(1); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 18px;
  flex: 0 0 auto;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  background: transparent;
  border: 1px solid var(--star);
  color: var(--cloud);
  font-size: 13px;
  letter-spacing: .12em;
  cursor: pointer;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
}

.nav-toggle__bars span {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--cyan);
  transition: transform var(--dur) var(--ease), opacity 180ms var(--ease);
}

.nav-toggle__bars span:nth-child(1) { top: 0; }
.nav-toggle__bars span:nth-child(2) { top: 5px; }
.nav-toggle__bars span:nth-child(3) { top: 10px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ---------- 阅读进度 ---------- */
.read-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  display: block;
  background: rgba(52, 224, 224, .12);
}

.read-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--violet), var(--orange));
  transition: width 120ms linear;
}

body.nav-open { overflow: hidden; }

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 120px;
  background: linear-gradient(180deg, rgba(20, 42, 85, .72), #050B1A 78%);
  border-top: 1px solid var(--star);
  color: var(--cloud);
}

.site-footer__inner {
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 64px var(--pad) 44px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.3fr;
  gap: 44px;
}

.footer-brand__mark {
  display: block;
  width: 42px;
  height: 4px;
  margin-bottom: 18px;
  background: linear-gradient(90deg, var(--cyan), var(--violet), var(--orange));
}

.footer-brand__name {
  font-size: 24px;
  font-weight: 900;
  margin: 0 0 12px;
}

.footer-brand__tag {
  color: var(--mist);
  font-size: 14px;
  max-width: 34ch;
  margin: 0;
}

.footer-title {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--lilac);
  margin: 0 0 16px;
}

.footer-nav__list { display: grid; gap: 10px; }

.footer-nav__link {
  color: var(--cloud);
  font-size: 15px;
  opacity: .84;
  transition: color var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.footer-nav__link:hover { color: var(--cyan); opacity: 1; }

.footer-contact__list {
  display: grid;
  gap: 12px;
  font-size: 14px;
  color: var(--mist);
}

.footer-contact__key {
  display: block;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 2px;
}

.footer-note {
  margin: 18px 0 0;
  font-size: 13px;
  color: var(--mist);
  max-width: 36ch;
  border-left: 2px solid var(--star);
  padding-left: 12px;
}

.footer-bottom { border-top: 1px solid rgba(30, 58, 110, .85); }

.footer-bottom__inner {
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 20px var(--pad);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.footer-copy {
  margin: 0;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mist);
  font-family: var(--font-mono);
}

.footer-bottom__links { display: flex; flex-wrap: wrap; gap: 20px; }

.footer-legal-link {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

/* ---------- 进入视口 ---------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 300ms var(--ease), transform 300ms var(--ease);
  will-change: opacity, transform;
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .site-footer__inner { grid-template-columns: 1fr 1fr; }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 1000px) {
  .layout-aside { grid-template-columns: 1fr; gap: 36px; }
  .rail { position: static; }
  .rail__list { grid-auto-flow: column; grid-auto-columns: max-content; border-left: 0; border-bottom: 1px solid var(--star); overflow-x: auto; padding-bottom: 6px; }
  .index-link { border-left: 0; border-bottom: 2px solid transparent; margin: 0; }
  .index-link.is-active { border-left: 0; border-bottom-color: var(--cyan); background: transparent; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  :root { --pad: 20px; }

  .page-intro { padding: 132px 0 36px; }

  .header-cta { display: none; }
  .nav-toggle { display: inline-flex; }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 90;
    width: min(360px, 88vw);
    margin: 0;
    padding: 100px 24px 32px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: linear-gradient(180deg, #142A55, #0B1B3A 70%);
    border-left: 1px solid var(--star);
    box-shadow: -24px 0 60px rgba(2, 7, 18, .55);
    overflow-y: auto;
    transform: translateX(103%);
    transition: transform 300ms var(--ease);
  }

  .nav[data-open] { transform: translateX(0); }

  .nav__eyebrow {
    display: block;
    font-size: 11px;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--lilac);
    margin: 0 0 16px;
  }

  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }

  .nav__link {
    padding: 15px 6px;
    font-size: 16px;
    color: var(--cloud);
    border-bottom: 1px solid rgba(30, 58, 110, .8);
  }

  .nav__link::after { display: none; }
  .nav__link[aria-current="page"] { background: linear-gradient(90deg, rgba(52, 224, 224, .16), transparent); }

  .nav__cta {
    display: inline-flex;
    margin-top: 26px;
    align-self: flex-start;
  }

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

  .grid--2,
  .grid--3 { grid-template-columns: 1fr; }

  .site-footer { margin-top: 84px; }
  .site-footer__inner { grid-template-columns: 1fr; gap: 34px; padding: 48px var(--pad) 34px; }
  .footer-contact { grid-column: auto; }

  .section { padding: 56px 0; }
  .panel--tall { padding: 26px; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .grid--4 { grid-template-columns: 1fr; }
  .sec-head { padding-left: 18px; }
  .footer-bottom__inner { flex-direction: column; align-items: flex-start; }
  .brand__sub { display: none; }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

  .has-js [data-reveal] { opacity: 1; transform: none; }
  .card:hover { transform: none; }
}