/* =========================================================
   宝威娱乐站 Shared Site CSS — /assets/site.css
   ========================================================= */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; 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 { display: block; max-width: 100%; height: auto; }
button { font: inherit; }

/* ---------- Variables ---------- */
:root {
  --bw-blue: #003399;
  --bw-orange: #FF6600;
  --bw-dark: #2D2D2D;
  --bw-white: #FFFFFF;
  --bw-gray: #F5F5F5;
  --bw-indigo: #4B0082;
  --bw-wine: #8B0000;
  --bw-teal: #008080;
  --bw-blue-light: #E6EEF8;
  --bw-orange-light: #FFF0E6;
  --font-display: Impact, 'Arial Black', 'DIN Alternate', 'Helvetica Neue', sans-serif;
  --font-body: 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-numeric: 'DIN Alternate', 'Bahnschrift', 'Roboto Mono', monospace;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --shadow-card: 0 6px 18px rgba(0, 0, 0, .08);
  --shadow-lift: 0 16px 36px rgba(0, 0, 0, .16);
  --content-max: 1200px;
}

/* ---------- Base ---------- */
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--bw-dark);
  background: var(--bw-white);
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: -.5px;
  line-height: 1.08;
  color: var(--bw-dark);
  margin: 0 0 .45em;
}
h1 { font-size: clamp(40px, 6vw, 64px); }
h2 { font-size: clamp(30px, 4.4vw, 42px); }
h3 { font-size: clamp(22px, 2.8vw, 28px); }
p { margin: 0 0 1.1em; }
a { color: var(--bw-blue); transition: color .2s ease; }
a:hover { color: var(--bw-orange); }
::selection { background: var(--bw-orange); color: #fff; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--bw-orange); outline-offset: 2px; border-radius: 4px; }

/* ---------- 无障碍 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 3000;
  padding: 12px 22px;
  background: var(--bw-orange);
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 22px rgba(255, 102, 0, .45);
  transform: translateY(-160%);
  transition: transform .25s ease;
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bw-blue);
  color: #fff;
  box-shadow: 0 4px 14px rgba(0, 0, 0, .12);
}
.header-shell {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 20px;
}
.header-commandbar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 58px;
}
.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(90deg, #ff9a4d 0%, var(--bw-orange) 70%, #ffd0b0 100%);
  z-index: 10;
}

/* 品牌 */
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: #fff;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .4px;
}
.brand-logo:hover { color: #fff; }
.brand-mark {
  position: relative;
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--bw-orange);
  transform: skew(-10deg);
  box-shadow: 0 4px 10px rgba(255, 102, 0, .35);
}
.brand-mark::after {
  content: '';
  position: absolute;
  left: 11px;
  top: 7px;
  width: 0;
  height: 0;
  border-left: 11px solid #fff;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
}
.brand-name { line-height: 1; }

/* 命令栏导航 */
.spectator-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}
.spectator-nav a {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 9px 13px;
  border-radius: var(--radius-pill);
  color: rgba(255, 255, 255, .8);
  font-size: 14.5px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: background .22s ease, color .22s ease;
}
.spectator-nav a:hover { background: rgba(255, 255, 255, .14); color: #fff; }
.spectator-nav a[aria-current="page"] {
  background: var(--bw-orange);
  color: #fff;
  box-shadow: 0 4px 12px rgba(255, 102, 0, .35);
}
.nav-index {
  font-family: var(--font-numeric);
  font-size: 11px;
  font-weight: 700;
  color: rgba(255, 255, 255, .55);
}
.spectator-nav a[aria-current="page"] .nav-index { color: rgba(255, 255, 255, .85); }

/* 直播状态 */
.header-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, .32);
  border-radius: var(--radius-pill);
  background: rgba(0, 0, 0, .16);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}
.status-label { line-height: 1; }
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bw-orange);
  animation: status-pulse 1.6s infinite;
}
@keyframes status-pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 102, 0, .55); }
  70% { box-shadow: 0 0 0 9px rgba(255, 102, 0, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 102, 0, 0); }
}

/* 路径条 */
.path-strip {
  position: relative;
  background: var(--bw-white);
  border-bottom: 1px solid #e5e5e5;
  padding: 8px 0 8px 30px;
  overflow: hidden;
}
.path-strip::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 20px;
  background: repeating-linear-gradient(135deg, var(--bw-blue) 0 4px, var(--bw-orange) 4px 8px);
}
.path-crumb {
  display: block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .2px;
  color: var(--bw-dark);
}

/* 移动按钮 */
.nav-toggle {
  position: relative;
  z-index: 1200;
  display: none;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 14px;
  background: var(--bw-orange);
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(255, 102, 0, .35);
}
.nav-toggle-lines,
.nav-toggle-lines::before,
.nav-toggle-lines::after {
  content: '';
  position: absolute;
  left: 11px;
  right: 11px;
  top: 50%;
  height: 3px;
  margin-top: -1.5px;
  border-radius: 2px;
  background: #fff;
  transition: transform .28s ease, opacity .18s ease;
}
.nav-toggle-lines::before { transform: translateY(-8px); }
.nav-toggle-lines::after { transform: translateY(8px); }
.nav-toggle[aria-expanded="true"] .nav-toggle-lines { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-lines::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-lines::after { transform: rotate(-45deg); }

/* ---------- 移动端底部标签栏 ---------- */
.mobile-tabs {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1050;
  background: var(--bw-blue);
  border-top: 3px solid var(--bw-orange);
  box-shadow: 0 -8px 20px rgba(0, 0, 0, .18);
}
.mobile-tabs a {
  position: relative;
  display: flex;
  flex: 1 1 0;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 9px 4px 12px;
  padding-bottom: calc(9px + env(safe-area-inset-bottom, 0px));
  color: rgba(255, 255, 255, .78);
  font-size: 12px;
  font-weight: 800;
  text-decoration: none;
}
.mobile-tabs a:hover { color: #fff; }
.mobile-tabs a[aria-current="page"] { color: var(--bw-orange); }
.mobile-tabs a[aria-current="page"]::before {
  content: '';
  position: absolute;
  top: -3px;
  left: 32%;
  right: 32%;
  height: 3px;
  border-radius: 0 0 4px 4px;
  background: var(--bw-orange);
}
.tab-icon {
  position: relative;
  display: block;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
}
.tab-icon--home::before,
.tab-icon--prod::before,
.tab-icon--news::before,
.tab-icon--contact::before,
.tab-icon--contact::after {
  content: '';
  position: absolute;
  display: block;
}
.tab-icon--home::before {
  left: 3px;
  top: 2px;
  width: 14px;
  height: 15px;
  background: currentColor;
  clip-path: polygon(50% 0, 100% 42%, 100% 100%, 0 100%, 0 42%);
}
.tab-icon--prod::before {
  left: 2px;
  top: 4px;
  width: 7px;
  height: 12px;
  border-radius: 3px;
  background: currentColor;
  box-shadow: 11px 0 0 0 currentColor;
}
.tab-icon--news::before {
  left: 2px;
  top: 4px;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  box-shadow: 0 6px 0 0 currentColor;
}
.tab-icon--news::after {
  left: 2px;
  top: 16px;
  width: 12px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}
.tab-icon--faq::before {
  content: '?';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 900;
  line-height: 1;
  color: currentColor;
}
.tab-icon--contact::before {
  left: 1px;
  top: 4px;
  width: 18px;
  height: 12px;
  border: 2px solid currentColor;
  border-radius: 3px;
}
.tab-icon--contact::after {
  left: 3px;
  top: 4px;
  width: 0;
  height: 0;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-bottom: 7px solid currentColor;
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 90px;
  border-top: 5px solid var(--bw-orange);
  background: var(--bw-dark);
  color: rgba(255, 255, 255, .8);
  overflow: hidden;
}
.site-footer::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 8px;
  background: repeating-linear-gradient(-45deg, var(--bw-orange) 0 8px, var(--bw-blue) 8px 16px);
  opacity: .6;
}
.footer-shell {
  position: relative;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 52px 20px 34px 28px;
}
.footer-shell::before {
  content: '';
  position: absolute;
  top: 30px;
  left: 28px;
  right: 20px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--bw-blue) 0 55%, var(--bw-orange) 55% 82%, transparent 82%);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: 36px;
  margin-top: 18px;
}
.footer-brand .brand-logo { margin-bottom: 6px; }
.brand-logo--light .brand-mark { box-shadow: 0 4px 12px rgba(255, 102, 0, .35); }
.trust-statement {
  max-width: 460px;
  margin: 18px 0 12px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .72);
}
.footer-tagline {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--bw-blue);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .4px;
}
.footer-heading {
  position: relative;
  margin: 0 0 16px;
  padding-bottom: 8px;
  font-size: 16px;
  letter-spacing: 1px;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, .18);
}
.footer-heading::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 42px;
  height: 2px;
  background: var(--bw-orange);
}
.footer-links {
  display: grid;
  gap: 4px;
}
.footer-links li {
  font-size: 14px;
  line-height: 1.6;
}
.footer-links a {
  display: inline-flex;
  padding: 3px 0;
  color: rgba(255, 255, 255, .75);
  text-decoration: none;
  transition: color .2s ease, transform .2s ease;
}
.footer-links a:hover {
  color: var(--bw-orange);
  transform: translateX(4px);
}
.footer-links a[aria-current="page"] {
  color: var(--bw-orange);
  font-weight: 700;
}
.contact-item { color: rgba(255, 255, 255, .78); }
.contact-note {
  margin-top: 10px;
  padding: 10px 12px;
  border-left: 3px solid var(--bw-orange);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, .07);
  color: rgba(255, 255, 255, .62);
  font-size: 13px;
  line-height: 1.6;
}
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 26px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, .16);
  font-size: 13px;
  color: rgba(255, 255, 255, .56);
}
.footer-copyright {
  font-weight: 800;
  letter-spacing: .3px;
  color: rgba(255, 255, 255, .88);
}
.footer-status { letter-spacing: .3px; }

/* 返回顶部 */
.back-top {
  position: fixed;
  right: 22px;
  bottom: 24px;
  z-index: 1290;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 15px;
  border: 0;
  border-radius: 18px 18px 6px 18px;
  background: var(--bw-orange);
  color: #fff;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 1px;
  box-shadow: 0 12px 26px rgba(255, 102, 0, .4);
  transition: transform .2s ease, box-shadow .2s ease;
}
.back-top:hover {
  transform: translateY(-4px) skewX(-6deg);
  box-shadow: 0 18px 34px rgba(255, 102, 0, .5);
}
.back-top-arrow {
  display: block;
  width: 11px;
  height: 11px;
  border-top: 3px solid #fff;
  border-left: 3px solid #fff;
  transform: rotate(45deg);
  border-radius: 1px;
}
.back-top-label { line-height: 1; }

/* ---------- 布局容器 ---------- */
.container {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 20px;
}
.container--narrow { max-width: 880px; }

/* ---------- 栅格 ---------- */
.grid-2, .grid-3, .grid-4, .grid-12 {
  display: grid;
  gap: 24px;
}
.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)); gap: 18px; }
.grid-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 20px; }

/* ---------- 章节分区 ---------- */
.section {
  position: relative;
  padding: 72px 0;
  scroll-margin-top: 96px;
}
.section--light { background: var(--bw-gray); }
.section--jewel { background: var(--bw-indigo); color: #fff; }
.section--jewel-blue { background: var(--bw-blue); color: #fff; }
.section--wine { background: var(--bw-wine); color: #fff; }
.section--teal { background: var(--bw-teal); color: #fff; }
.section--jewel h1, .section--jewel h2, .section--jewel h3,
.section--jewel-blue h1, .section--jewel-blue h2, .section--jewel-blue h3,
.section--wine h1, .section--wine h2, .section--wine h3,
.section--teal h1, .section--teal h2, .section--teal h3 { color: #fff; }
.section--jewel a, .section--jewel-blue a, .section--wine a, .section--teal a { color: var(--bw-orange); }
.section--jewel a:hover, .section--jewel-blue a:hover, .section--wine a:hover, .section--teal a:hover { color: #ffb27a; }
.section-head {
  position: relative;
  margin-bottom: 36px;
  padding-right: 10px;
}
.section-index {
  position: absolute;
  top: -34px;
  right: 0;
  z-index: 0;
  font-family: var(--font-display);
  font-size: clamp(80px, 14vw, 150px);
  line-height: 1;
  color: rgba(0, 0, 0, .05);
  user-select: none;
  pointer-events: none;
}
.section--jewel .section-index,
.section--jewel-blue .section-index,
.section--wine .section-index,
.section--teal .section-index { color: rgba(255, 255, 255, .12); }
.section-title {
  position: relative;
  z-index: 1;
  margin-bottom: 10px;
}
.section-lead {
  max-width: 720px;
  font-size: 16px;
  line-height: 1.75;
  opacity: .85;
}

/* ---------- 分屏首屏 ---------- */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 48px;
  align-items: center;
}
.split__content { position: relative; }
.split__media { position: relative; }

/* ---------- 卡片 ---------- */
.card {
  position: relative;
  padding: 28px;
  border: 1px solid #eef0f2;
  border-radius: var(--radius-lg);
  background: var(--bw-white);
  box-shadow: var(--shadow-card);
  transition: transform .28s ease, box-shadow .28s ease;
}
.card--skew { transform: rotate(.6deg); }
.card--skew:hover, .card--skew:focus-within {
  transform: rotate(0deg) translateY(-6px);
  box-shadow: var(--shadow-lift);
}
.card--dark { background: var(--bw-blue); color: #fff; border: 0; }
.card--dark h2, .card--dark h3 { color: #fff; }
.card--flat {
  background: transparent;
  border: 2px dashed rgba(255, 255, 255, .35);
  box-shadow: none;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--bw-blue);
  color: #fff;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: .6px;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(0, 51, 153, .22);
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease;
}
.btn:hover {
  transform: translateY(-2px) skewX(-4deg);
  color: #fff;
  box-shadow: 0 12px 26px rgba(0, 51, 153, .3);
}
.btn:active { transform: translateY(0); }
.btn--primary {
  background: var(--bw-orange);
  box-shadow: 0 8px 18px rgba(255, 102, 0, .32);
}
.btn--primary:hover {
  background: #ff7b21;
  box-shadow: 0 12px 26px rgba(255, 102, 0, .42);
}
.btn--ghost {
  background: transparent;
  color: var(--bw-blue);
  box-shadow: inset 0 0 0 2px currentColor;
}
.btn--ghost:hover {
  color: var(--bw-orange);
  box-shadow: inset 0 0 0 2px currentColor;
}
.btn--light {
  background: #fff;
  color: var(--bw-blue);
  box-shadow: 0 8px 18px rgba(0, 0, 0, .18);
}

/* ---------- 标签 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background: var(--bw-blue-light);
  color: var(--bw-blue);
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
}
.chip--orange { background: var(--bw-orange-light); color: #d95600; }
.chip--live { background: var(--bw-wine); color: #fff; }
.chip--health { background: #e2f0ec; color: #00665f; }
.chip--glass {
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .35);
  color: #fff;
}

/* ---------- 数据数字 ---------- */
.data-number {
  font-family: var(--font-numeric);
  font-size: clamp(38px, 5.4vw, 60px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.5px;
  font-variant-numeric: tabular-nums;
  color: var(--bw-blue);
}
.data-number--orange { color: var(--bw-orange); }
.data-number--light { color: #fff; }
.data-label {
  display: block;
  margin-top: 7px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .4px;
  color: rgba(0, 0, 0, .6);
}

/* ---------- 图片容器 ---------- */
.figure {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, var(--bw-blue-light), #d6e2f5 55%, var(--bw-orange-light));
  box-shadow: var(--shadow-card);
}
.figure::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(-45deg, rgba(0, 51, 153, .07) 0 7px, transparent 7px 14px),
    radial-gradient(circle at 80% 15%, rgba(255, 102, 0, .25), transparent 55%);
}
.figure img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.figure figcaption {
  position: absolute;
  left: 12px;
  bottom: 12px;
  z-index: 2;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: rgba(0, 0, 0, .55);
  color: #fff;
  font-size: 12px;
}
.figure--hero { min-height: 320px; }
.figure--sport { aspect-ratio: 4 / 3; }
.figure--avatar {
  width: 120px;
  height: 120px;
  aspect-ratio: auto;
  border: 4px solid #fff;
  border-radius: 50%;
  box-shadow: 0 8px 22px rgba(0, 0, 0, .16);
}

/* ---------- 速度装饰 ---------- */
.band-speed {
  width: 100%;
  height: 14px;
  background: repeating-linear-gradient(-45deg, var(--bw-orange) 0 10px, transparent 10px 20px);
  opacity: .55;
}
.speed-lines {
  position: relative;
  height: 60px;
  overflow: hidden;
  background: var(--bw-blue);
}
.speed-lines::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(115deg, rgba(255, 255, 255, .08) 0 14px, transparent 14px 28px),
    linear-gradient(90deg, var(--bw-orange), transparent 60%);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
  font-size: 13px;
  color: rgba(0, 0, 0, .62);
}
.breadcrumb a {
  color: var(--bw-blue);
  text-decoration: none;
  font-weight: 700;
}
.breadcrumb a:hover { color: var(--bw-orange); }
.breadcrumb [aria-current="page"] {
  color: var(--bw-dark);
  font-weight: 800;
}

/* ---------- 滚动显现 ---------- */
.js-reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .65s ease, transform .65s ease;
}
.js-reveal[data-revealed] {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 920px) {
  .spectator-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 4px;
    width: 86vw;
    max-width: 330px;
    margin: 0;
    padding: 76px 18px 28px;
    background: var(--bw-blue);
    border-left: 4px solid var(--bw-orange);
    box-shadow: -18px 0 36px rgba(0, 0, 0, .32);
    transform: translateX(105%);
    visibility: hidden;
    transition: transform .3s ease, visibility .3s;
  }
  .spectator-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
  }
  .spectator-nav a {
    padding: 14px 16px;
    font-size: 17px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    border-radius: 14px;
  }
  .nav-toggle { display: inline-block; }
  .header-status { margin-left: auto; }
  .split {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
@media (max-width: 760px) {
  body { padding-bottom: 64px; }
  .mobile-tabs { display: flex; }
  .back-top { right: 14px; bottom: 80px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
}
@media (max-width: 680px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-meta { gap: 8px 18px; }
}
@media (max-width: 520px) {
  .status-label { display: none; }
  .header-status { padding: 6px 9px; }
  .brand-name { font-size: 18px; }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .status-dot { animation: none; }
  .js-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}