/* ============================================
   B体育·赛场 全站共享样式 /assets/site.css
   深空蓝夜色球场 + 荧光绿实时信号 + 暖橙色行动切割
   ============================================ */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { min-height: 100vh; }
img, picture, video, canvas, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; }
a { color: inherit; }
button { background: none; border: 0; cursor: pointer; }

/* ---------- Tokens ---------- */
:root {
  --c-bg: #0B1D3A;
  --c-panel: #14273E;
  --c-grid: #2A4B7C;
  --c-neon: #00E676;
  --c-orange: #FF6B35;
  --c-text: #EAF2FF;
  --c-text-2: #A6C1E1;
  --c-text-3: #7A96B8;
  --c-link: #3D9CFF;
  --c-warn: #FFD166;
  --c-footer: #081226;

  --bs-font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --bs-font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --bs-font-mono: "Roboto Mono", "SFMono-Regular", Consolas, "Courier New", monospace;
  --bs-font-display: "Arial Black", "Impact", "Noto Sans SC", sans-serif;

  --bs-container: 1200px;
  --bs-gap: 1.2rem;
  --bs-nav-h: 56px;
  --bs-z-nav: 100;
  --bs-z-skip: 200;
}

/* ---------- Base ---------- */
body {
  font-family: var(--bs-font-sans);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-text-2);
  background:
    radial-gradient(900px 360px at 72% -120px, rgba(0, 230, 118, .07), transparent 60%),
    radial-gradient(760px 320px at 8% -90px, rgba(255, 107, 53, .06), transparent 60%),
    var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--c-neon); color: var(--c-bg); }

a { color: var(--c-link); text-decoration-thickness: 1px; text-underline-offset: 3px; }

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

main#main-content {
  min-height: 65vh;
  scroll-margin-top: calc(var(--bs-nav-h) + 10px);
}

/* ---------- Container ---------- */
.bs-container { width: min(var(--bs-container), calc(100% - 2rem)); margin-inline: auto; }
.bs-container--narrow { width: min(820px, calc(100% - 2rem)); margin-inline: auto; }

/* ---------- Section ---------- */
.bs-section { padding-block: clamp(2rem, 5vw, 3.5rem) clamp(1.8rem, 4vw, 2.8rem); }
.bs-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: .5rem 1.2rem;
  border-bottom: 1px solid var(--c-grid);
  padding-bottom: .7rem;
  margin-bottom: 1.4rem;
}
.bs-section__title {
  font-family: var(--bs-font-serif);
  font-weight: 900;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.3;
  color: var(--c-text);
}
.bs-section__title::before {
  content: "//";
  font-family: var(--bs-font-mono);
  font-weight: 400;
  font-size: .75em;
  letter-spacing: -.08em;
  color: var(--c-orange);
  margin-right: .55rem;
}
.bs-section__note { font-size: .85rem; color: var(--c-text-3); }

/* ---------- Grid ---------- */
.bs-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--bs-gap); }
.bs-grid--2 { grid-template-columns: repeat(2, 1fr); }
.bs-grid--3 { grid-template-columns: repeat(3, 1fr); }
.bs-grid--4 { grid-template-columns: repeat(4, 1fr); }
.bs-grid > .bs-span-3 { grid-column: span 3; }
.bs-grid > .bs-span-4 { grid-column: span 4; }
.bs-grid > .bs-span-6 { grid-column: span 6; }
.bs-grid > .bs-span-8 { grid-column: span 8; }
.bs-grid > .bs-span-12 { grid-column: span 12; }

/* ---------- Buttons ---------- */
.bs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .68rem 1.25rem;
  border: 1px solid var(--c-grid);
  background: transparent;
  color: var(--c-text-2);
  font-family: var(--bs-font-sans);
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .06em;
  text-decoration: none;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
}
.bs-btn:hover { border-color: var(--c-neon); color: var(--c-neon); }
.bs-btn:active { transform: translateY(1px); }
.bs-btn--primary { background: var(--c-orange); border-color: var(--c-orange); color: #fff; }
.bs-btn--primary:hover { background: #ff8355; border-color: #ff8355; color: #fff; }
.bs-btn--ghost { border-color: var(--c-neon); color: var(--c-neon); }
.bs-btn--ghost:hover { background: rgba(0, 230, 118, .08); }
.bs-btn--sm { padding: .42rem .85rem; font-size: .84rem; }

/* ---------- Badges ---------- */
.bs-badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .22rem .6rem;
  border: 1px solid var(--c-grid);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  line-height: 1.5;
  color: var(--c-text-2);
  text-transform: uppercase;
}
.bs-badge--live { border-color: rgba(0, 230, 118, .45); color: var(--c-neon); }
.bs-badge--act { border-color: rgba(255, 107, 53, .45); color: var(--c-orange); }
.bs-badge--warn { border-color: rgba(255, 209, 102, .45); color: var(--c-warn); }

/* ---------- Breadcrumb ---------- */
.bs-crumb { display: flex; flex-wrap: wrap; align-items: center; gap: .3rem; padding-block: .85rem; font-size: .82rem; color: var(--c-text-3); }
.bs-crumb a { color: var(--c-text-3); text-decoration: none; transition: color .2s ease; }
.bs-crumb a:hover { color: var(--c-neon); }
.bs-crumb__sep { color: var(--c-grid); margin-inline: .15rem; }
.bs-crumb [aria-current="page"] { color: var(--c-text-2); }

/* ---------- Card & Panel ---------- */
.bs-panel { position: relative; background: var(--c-panel); border: 1px solid var(--c-grid); padding: 1.4rem; }
.bs-card {
  position: relative;
  background: var(--c-panel);
  border: 1px solid var(--c-grid);
  padding: 1.2rem 1.15rem 1.5rem;
}
.bs-card::before {
  content: "";
  position: absolute;
  top: -1px; left: -1px;
  width: 18px; height: 18px;
  border-top: 3px solid var(--c-neon);
  border-left: 3px solid var(--c-neon);
}
.bs-card::after {
  content: attr(data-index);
  position: absolute;
  right: .55rem; bottom: .4rem;
  font-family: var(--bs-font-mono);
  font-size: .66rem;
  letter-spacing: .12em;
  color: var(--c-text-3);
}
.bs-card--act::before { border-color: var(--c-orange); }
.bs-card--warn::before { border-color: var(--c-warn); }
.bs-card--cut { clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%); }
.bs-card__title { font-family: var(--bs-font-serif); font-weight: 900; font-size: 1.15rem; line-height: 1.4; color: var(--c-text); margin-bottom: .5rem; }
.bs-card p { font-size: .9rem; line-height: 1.7; color: var(--c-text-2); }

/* ---------- Hero ---------- */
.bs-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--c-grid);
  background:
    linear-gradient(118deg, rgba(0, 230, 118, .05), transparent 38%),
    linear-gradient(295deg, rgba(255, 107, 53, .06), transparent 34%),
    var(--c-panel);
  padding-block: clamp(2.2rem, 6vw, 4.2rem);
}
.bs-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(112deg, transparent 49.6%, rgba(42, 75, 124, .3) 49.6%, rgba(42, 75, 124, .3) 50.4%, transparent 50.4%),
    linear-gradient(24deg, transparent 49.6%, rgba(42, 75, 124, .24) 49.6%, rgba(42, 75, 124, .24) 50.4%, transparent 50.4%);
  background-size: 110px 110px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  pointer-events: none;
}
.bs-hero__inner { position: relative; z-index: 1; }
.bs-hero__note {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-family: var(--bs-font-mono);
  font-size: .78rem;
  letter-spacing: .18em;
  color: var(--c-orange);
  text-transform: uppercase;
  margin-bottom: .8rem;
}
.bs-hero__note::before { content: ""; width: 1.5rem; height: 2px; background: var(--c-orange); }

/* ---------- Preview Card ---------- */
.bs-preview {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  padding: 1.3rem 1.2rem 1.4rem;
  background: var(--c-panel);
  border: 1px solid var(--c-grid);
  text-decoration: none;
  transition: border-color .2s ease, transform .2s ease;
}
.bs-preview:hover { border-color: var(--c-neon); transform: translateY(-2px); }
.bs-preview__tag { font-family: var(--bs-font-mono); font-size: .7rem; letter-spacing: .16em; color: var(--c-neon); text-transform: uppercase; }
.bs-preview__title { font-family: var(--bs-font-serif); font-weight: 900; font-size: 1.2rem; line-height: 1.35; color: var(--c-text); }
.bs-preview__desc { font-size: .86rem; line-height: 1.65; color: var(--c-text-3); }
.bs-preview__meta {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--bs-font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--c-text-3);
}
.bs-preview__meta::after { content: "→"; color: var(--c-orange); font-size: 1rem; transition: transform .2s ease; }
.bs-preview:hover .bs-preview__meta::after { transform: translateX(4px); }

/* ---------- Index List ---------- */
.bs-index { border-top: 1px solid var(--c-grid); }
.bs-index__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: .62rem .15rem;
  border-bottom: 1px solid var(--c-grid);
  font-size: .9rem;
  color: var(--c-text-2);
  text-decoration: none;
  transition: background .2s ease, padding-left .2s ease;
}
.bs-index__row:hover { background: rgba(0, 230, 118, .04); padding-left: .5rem; }
.bs-index__row .bs-index__data { font-family: var(--bs-font-mono); font-size: .82rem; color: var(--c-neon); }
.bs-index__row--act .bs-index__data { color: var(--c-orange); }

/* ---------- Stat ---------- */
.bs-stat { font-family: var(--bs-font-mono); font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 700; line-height: 1.15; color: var(--c-neon); }
.bs-stat__label { display: block; margin-bottom: .25rem; font-family: var(--bs-font-sans); font-size: .72rem; font-weight: 700; letter-spacing: .2em; color: var(--c-text-3); text-transform: uppercase; }
.bs-stat--act { color: var(--c-orange); }

/* ---------- Media ---------- */
.bs-media {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--c-panel);
  border: 1px solid var(--c-grid);
}
.bs-media--4-3 { aspect-ratio: 4 / 3; }
.bs-media--21-9 { aspect-ratio: 21 / 9; }
.bs-media--offset { margin-left: 1.4rem; }
.bs-media::after {
  content: "IMG";
  font-family: var(--bs-font-mono);
  font-size: .78rem;
  letter-spacing: .34em;
  color: var(--c-text-3);
}
.bs-media > img { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; object-fit: cover; }

/* ---------- Prose ---------- */
.bs-prose { max-width: 46em; font-size: .98rem; line-height: 1.9; color: var(--c-text-2); }
.bs-prose h2 { font-family: var(--bs-font-serif); font-size: 1.45rem; font-weight: 900; color: var(--c-text); margin: 1.9em 0 .6em; line-height: 1.35; }
.bs-prose h3 { font-family: var(--bs-font-serif); font-size: 1.18rem; font-weight: 700; color: var(--c-text); margin: 1.5em 0 .5em; }
.bs-prose p { margin-bottom: 1.1em; }
.bs-prose a { color: var(--c-link); text-decoration: underline; text-underline-offset: 3px; }
.bs-prose a:hover { color: var(--c-neon); }
.bs-prose ul, .bs-prose ol { margin: 0 0 1.2em 1.4em; }
.bs-prose li { margin-bottom: .35em; }
.bs-prose strong { color: var(--c-text); }
.bs-prose code { font-family: var(--bs-font-mono); font-size: .88em; background: var(--c-panel); border: 1px solid var(--c-grid); padding: .12em .42em; }
.bs-prose blockquote { margin: 1.4em 0; padding: .7rem 1rem; border-left: 3px solid var(--c-neon); background: var(--c-panel); color: var(--c-text-2); }
.bs-prose hr { border: 0; border-top: 1px solid var(--c-grid); margin: 2em 0; }

/* ---------- Slash ---------- */
.bs-slash { height: 1px; border: 0; margin: 1.8rem 0; background: linear-gradient(90deg, var(--c-neon) 0%, var(--c-grid) 30%, var(--c-orange) 55%, transparent 90%); }

/* ============================================
   头部
   ============================================ */

/* Skip link */
.bs-skip {
  position: fixed;
  top: -4rem;
  left: 1rem;
  z-index: var(--bs-z-skip);
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .6rem 1.1rem;
  background: var(--c-orange);
  color: #fff;
  font-weight: 700;
  font-size: .9rem;
  letter-spacing: .08em;
  text-decoration: none;
  box-shadow: 0 4px 18px rgba(0, 0, 0, .35);
  transition: top .2s ease;
}
.bs-skip:focus { top: .75rem; }

/* Site head panel */
.bs-site-head { position: relative; background: var(--c-panel); }

/* Topbar masthead */
.bs-topbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding-block: 1.15rem;
}
.bs-topbar__side { display: flex; align-items: center; gap: 1.1rem; }
.bs-topbar__side--left { justify-content: flex-start; }
.bs-topbar__side--right { justify-content: flex-end; }

/* Brand */
.bs-brand { display: inline-flex; align-items: center; gap: .85rem; color: var(--c-text); text-decoration: none; }
.bs-brand__mark {
  font-family: var(--bs-font-display);
  font-size: 1.7rem;
  line-height: 1;
  width: 2.9rem;
  height: 2.9rem;
  display: grid;
  place-items: center;
  color: var(--c-bg);
  background: linear-gradient(135deg, var(--c-neon) 0%, var(--c-neon) 55%, var(--c-orange) 55%, var(--c-orange) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 74%, 74% 100%, 0 100%);
}
.bs-brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.bs-brand__name { font-family: var(--bs-font-serif); font-weight: 900; font-size: clamp(1.4rem, 3vw, 1.9rem); letter-spacing: .08em; color: var(--c-text); }
.bs-brand__tag { margin-top: .2rem; font-size: .68rem; font-weight: 500; letter-spacing: .22em; color: var(--c-text-3); }
.bs-brand--footer .bs-brand__mark { width: 2.3rem; height: 2.3rem; font-size: 1.3rem; }
.bs-brand--footer .bs-brand__name { font-size: 1.25rem; }

/* Coordinate index */
.bs-coord {
  font-family: var(--bs-font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  white-space: nowrap;
  color: var(--c-text-3);
  padding-left: .8rem;
  border-left: 1px solid var(--c-grid);
}

/* Color legend */
.bs-legend { display: inline-flex; align-items: center; gap: .7rem; }
.bs-legend__item { display: inline-flex; align-items: center; gap: .3rem; font-size: .7rem; letter-spacing: .1em; color: var(--c-text-3); }
.bs-legend__item > i { font-style: normal; display: block; width: .55rem; height: .55rem; }
.bs-legend__item--live > i { background: var(--c-neon); clip-path: polygon(0 0, 100% 0, 100% 100%, 20% 100%, 0 80%); }
.bs-legend__item--act > i { background: var(--c-orange); clip-path: polygon(15% 0, 100% 0, 85% 100%, 0 100%); }
.bs-legend__item--link > i { background: var(--c-link); clip-path: polygon(0 0, 100% 20%, 100% 100%, 0 80%); }

.bs-header-icp { font-size: .68rem; letter-spacing: .05em; color: var(--c-text-3); }

/* Diagonal slash divider */
.bs-header__slash {
  height: 3px;
  background: linear-gradient(90deg, var(--c-neon) 0%, var(--c-neon) 14%, var(--c-grid) 14%, var(--c-grid) 30%, var(--c-orange) 30%, var(--c-orange) 36%, var(--c-grid) 36%, var(--c-grid) 78%, var(--c-bg) 78%);
}

/* Sticky navbar */
.bs-navbar {
  position: sticky;
  top: 0;
  z-index: var(--bs-z-nav);
  background: var(--c-bg);
  border-top: 1px solid var(--c-grid);
  border-bottom: 1px solid var(--c-grid);
}
@supports ((backdrop-filter: blur(4px)) or (-webkit-backdrop-filter: blur(4px))) {
  .bs-navbar { background: rgba(11, 29, 58, .86); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
}
.bs-navbar.is-scrolled { box-shadow: 0 6px 20px rgba(3, 10, 24, .35); }

.bs-navbar__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: var(--bs-nav-h);
}
.bs-navbar__progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, var(--c-neon), var(--c-orange));
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

/* Mini brand */
.bs-mini-brand { display: inline-flex; align-items: center; gap: .5rem; justify-self: start; text-decoration: none; }
.bs-mini-brand__mark {
  font-family: var(--bs-font-display);
  font-size: .85rem;
  line-height: 1;
  width: 1.7rem;
  height: 1.7rem;
  display: grid;
  place-items: center;
  color: var(--c-bg);
  background: linear-gradient(135deg, var(--c-neon) 55%, var(--c-orange) 55%);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
}
.bs-mini-brand__name { font-weight: 700; font-size: .88rem; letter-spacing: .12em; color: var(--c-text-2); }

/* Nav */
.bs-nav { display: flex; align-items: center; justify-content: center; justify-self: center; gap: .15rem; }
.bs-nav__link {
  position: relative;
  display: block;
  padding: .8rem .78rem;
  color: var(--c-text-2);
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease;
}
.bs-nav__link::after {
  content: "";
  position: absolute;
  left: .78rem;
  right: .78rem;
  bottom: .3rem;
  height: 2px;
  background: linear-gradient(90deg, var(--c-neon), var(--c-orange));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .25s ease;
}
.bs-nav__link:hover { color: var(--c-text); }
.bs-nav__link:hover::after { transform: scaleX(.55); }
.bs-nav__link[aria-current="page"] { color: var(--c-neon); }
.bs-nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* Mobile nav toggle */
.bs-nav-toggle {
  display: none;
  justify-self: end;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--c-grid);
  background: var(--c-panel);
  transition: border-color .2s ease;
}
.bs-nav-toggle:hover { border-color: var(--c-neon); }
.bs-nav-toggle__line { display: block; width: 1.15rem; height: 2px; background: var(--c-neon); transition: transform .25s ease, opacity .25s ease; }
.bs-nav-toggle.is-active .bs-nav-toggle__line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.bs-nav-toggle.is-active .bs-nav-toggle__line:nth-child(2) { opacity: 0; }
.bs-nav-toggle.is-active .bs-nav-toggle__line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Ticker */
.bs-ticker { background: var(--c-panel); border-bottom: 1px solid var(--c-grid); }
.bs-ticker__inner { display: flex; align-items: stretch; }
.bs-ticker__label {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: 0 .9rem;
  background: var(--c-bg);
  border-right: 1px solid var(--c-grid);
  color: var(--c-neon);
  font-family: var(--bs-font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .16em;
}
.bs-dot {
  width: .4rem;
  height: .4rem;
  border-radius: 50%;
  background: var(--c-neon);
  animation: bs-pulse 1.8s ease-out infinite;
}
@keyframes bs-pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 230, 118, .5); }
  100% { box-shadow: 0 0 0 .5rem rgba(0, 230, 118, 0); }
}
.bs-ticker__viewport { flex: 1; overflow: hidden; min-width: 0; }
.bs-ticker__track { display: flex; width: max-content; will-change: transform; animation: bs-ticker-scroll 32s linear infinite; }
.bs-ticker__track:hover { animation-play-state: paused; }
@keyframes bs-ticker-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.bs-ticker__group { display: flex; align-items: stretch; }
.bs-ticker__item {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .55rem 1.1rem;
  font-size: .84rem;
  color: var(--c-text-2);
  white-space: nowrap;
  border-right: 1px solid rgba(42, 75, 124, .6);
}
.bs-ticker__item b { color: var(--c-text); font-weight: 700; }
.bs-ticker__item u { color: var(--c-warn); text-decoration: none; font-family: var(--bs-font-mono); font-size: .72rem; }

/* ============================================
   页脚
   ============================================ */
.bs-footer {
  position: relative;
  margin-top: 4.5rem;
  background: var(--c-footer);
}
.bs-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-neon) 0%, var(--c-neon) 12%, var(--c-grid) 12%, var(--c-grid) 30%, var(--c-orange) 30%, var(--c-orange) 36%, var(--c-grid) 36%, var(--c-grid) 100%);
}
.bs-footer__grid {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr 1.5fr;
  gap: 2.2rem;
  padding-block: 3rem 2.6rem;
}
.bs-footer__desc { margin-top: .9rem; font-size: .88rem; line-height: 1.75; color: var(--c-text-3); max-width: 34em; }
.bs-footer__trust {
  margin-top: 1rem;
  padding: .6rem .8rem;
  border-left: 2px solid var(--c-neon);
  background: rgba(0, 230, 118, .05);
  font-size: .78rem;
  line-height: 1.6;
  color: var(--c-text-2);
}
.bs-footer__col { display: flex; flex-direction: column; gap: .5rem; }
.bs-footer__title {
  font-family: var(--bs-font-serif);
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .08em;
  color: var(--c-text);
  margin-bottom: .5rem;
}
.bs-footer__col a { color: var(--c-text-3); font-size: .86rem; text-decoration: none; transition: color .2s ease; }
.bs-footer__col a:hover { color: var(--c-neon); }
.bs-footer__col a[aria-current="page"] { color: var(--c-neon); }
.bs-footer__contact { display: flex; flex-direction: column; gap: .45rem; font-size: .85rem; color: var(--c-text-3); }
.bs-footer__mail { font-family: var(--bs-font-mono); color: var(--c-link); font-size: .82rem; }
.bs-footer__bottom { border-top: 1px solid rgba(42, 75, 124, .55); }
.bs-footer__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem 1.4rem;
  padding-block: 1rem;
  font-size: .78rem;
  color: var(--c-text-3);
}
.bs-footer__copy { margin-right: auto; }
.bs-footer__legal { display: inline-flex; flex-wrap: wrap; gap: 1.1rem; }
.bs-footer__bar a { color: var(--c-text-3); text-decoration: none; transition: color .2s ease; }
.bs-footer__bar a:hover { color: var(--c-neon); }

/* ============================================
   滚动显现 & 渐进增强
   ============================================ */
html:not(.js) [data-reveal] { opacity: 1; transform: none; }
html:not(.js) .bs-ticker__track { animation: none; }

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .55s ease, transform .55s ease;
  transition-delay: var(--delay, 0s);
  will-change: opacity, transform;
}
[data-reveal="left"] { transform: translateX(-22px); }
[data-reveal="right"] { transform: translateX(22px); }
[data-reveal="scale"] { transform: scale(.95); }
[data-reveal].is-visible { opacity: 1; transform: none; }

@keyframes bs-nav-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ============================================
   响应式：平板
   ============================================ */
@media (max-width: 960px) {
  .bs-footer__grid { grid-template-columns: 1fr 1fr; gap: 1.8rem; }
}

@media (max-width: 900px) {
  .bs-topbar { grid-template-columns: 1fr; justify-items: center; padding-block: 1rem; }
  .bs-topbar__side { display: none; }

  .bs-navbar__inner { grid-template-columns: 1fr auto; min-height: 52px; }

  .bs-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--c-bg);
    border-bottom: 1px solid var(--c-grid);
    box-shadow: 0 18px 30px rgba(3, 10, 24, .4);
    padding: .4rem .75rem .7rem;
  }
  .bs-nav[data-open="true"] { display: flex; animation: bs-nav-in .18s ease; }
  .bs-nav__link { padding: .75rem .6rem; border-bottom: 1px solid rgba(42, 75, 124, .5); }
  .bs-nav__link:last-child { border-bottom: 0; }
  .bs-nav__link::after { display: none; }
  .bs-nav__link[aria-current="page"] { color: var(--c-neon); }

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

  .bs-grid--4, .bs-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .bs-grid > .bs-span-8,
  .bs-grid > .bs-span-6,
  .bs-grid > .bs-span-4,
  .bs-grid > .bs-span-3 { grid-column: span 2; }
}

/* ============================================
   响应式：手机
   ============================================ */
@media (max-width: 600px) {
  .bs-container { width: calc(100% - 1.25rem); }
  .bs-brand { gap: .6rem; }
  .bs-brand__mark { width: 2.4rem; height: 2.4rem; font-size: 1.35rem; }
  .bs-brand__name { font-size: 1.15rem; letter-spacing: .05em; }
  .bs-brand__tag { font-size: .6rem; letter-spacing: .14em; }

  .bs-ticker__label { font-size: .66rem; padding: 0 .6rem; }
  .bs-ticker__item { font-size: .78rem; padding: .5rem .8rem; }

  .bs-grid--4, .bs-grid--3, .bs-grid--2 { grid-template-columns: 1fr; }
  .bs-grid > .bs-span-8,
  .bs-grid > .bs-span-6,
  .bs-grid > .bs-span-4,
  .bs-grid > .bs-span-3 { grid-column: span 1; }

  .bs-media--offset { margin-left: 0; }

  .bs-footer__grid { grid-template-columns: 1fr; gap: 1.8rem; padding-block: 2.4rem 2rem; }
  .bs-footer__bar { flex-direction: column; align-items: flex-start; }
  .bs-footer__copy { margin-right: 0; }
}

/* ============================================
   prefers-reduced-motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
  .bs-ticker__track, .bs-dot, .bs-nav[data-open="true"] { animation: none !important; }
  .bs-ticker__track:hover { animation-play-state: initial; }
  .bs-ticker__viewport { overflow-x: auto; scrollbar-width: none; }
  .bs-ticker__viewport::-webkit-scrollbar { display: none; }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  .bs-navbar__progress { display: none; }
}