/* ===================================================
   博电竞主站 · 共享样式 /assets/site.css
   夜间电竞指挥中心 · 纵向叙事长卷
   =================================================== */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h, 76px) + 1.5rem); }
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd, table { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
table { border-collapse: collapse; border-spacing: 0; }
a { color: inherit; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink-950: #0A1020;
  --ink-900: #0C1526;
  --panel: #121C33;
  --cyan: #3DF5D4;
  --cyan-soft: rgba(61, 245, 212, .12);
  --orange: #FF5C39;
  --orange-soft: rgba(255, 92, 57, .14);
  --mist: #B8FFF0;
  --slate: #7E8FA8;
  --line: #1E2B42;
  --white: #F7FBFF;
  --deep: #06231F;

  --font-head: 'Barlow Condensed', 'Noto Sans SC', 'HarmonyOS Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', 'HarmonyOS Sans SC', 'PingFang SC', sans-serif;
  --font-mono: 'JetBrains Mono', 'Roboto Mono', monospace;

  --shell: 1220px;
  --header-h: 76px;
  --gap: clamp(1rem, 2.4vw, 2rem);
  --section-y: clamp(4rem, 9vw, 8rem);

  --radius-xs: 3px;
  --radius-md: 8px;
  --hair: 1px solid var(--line);
  --shadow: 0 18px 45px -30px rgba(0, 0, 0, .95);
  --glow: 0 0 26px -8px rgba(61, 245, 212, .7);
  --ease: cubic-bezier(.22, .7, .3, 1);
}

/* ---------- 3. Base / 中文排版 ---------- */
body {
  position: relative;
  min-height: 100%;
  background-color: var(--ink-950);
  background-image:
    radial-gradient(1100px 620px at 84% -10%, rgba(61, 245, 212, .10), transparent 62%),
    radial-gradient(780px 460px at 4% 10%, rgba(255, 92, 57, .08), transparent 60%),
    linear-gradient(180deg, #0A1020 0%, #0B1425 46%, #0A1020 100%);
  background-attachment: fixed;
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.85;
  letter-spacing: .01em;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(30, 43, 66, .55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 43, 66, .55) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(circle at 50% 16%, rgba(0, 0, 0, .95), transparent 78%);
  mask-image: radial-gradient(circle at 50% 16%, rgba(0, 0, 0, .95), transparent 78%);
  opacity: .5;
}
h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.015em;
  color: var(--white);
}
p { line-height: 1.85; }
strong { color: var(--white); font-weight: 600; }
::selection { background: var(--cyan); color: var(--ink-950); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 2px; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--ink-950); }
::-webkit-scrollbar-thumb { background: #22314c; border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: #2f4162; }

#main-content { position: relative; z-index: 1; display: block; padding-top: var(--header-h); }
.main-flush { padding-top: 0; }

/* ---------- 4. 布局组件 ---------- */
.shell {
  width: min(100% - clamp(1.5rem, 5vw, 4rem), var(--shell));
  margin-inline: auto;
}
.section { position: relative; z-index: 1; padding-block: var(--section-y); }
.section--tight { padding-block: clamp(2.5rem, 5vw, 4rem); }

.split { display: grid; gap: clamp(1.5rem, 4vw, 3rem); grid-template-columns: minmax(0, 1fr); }
.grid-2, .grid-3, .grid-4 { display: grid; gap: var(--gap); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }

.stack { display: grid; gap: var(--stack-gap, 1rem); }
.stack--sm { --stack-gap: .5rem; }
.stack--lg { --stack-gap: 1.75rem; }

.rule { height: 1px; border: 0; background: linear-gradient(90deg, var(--line), rgba(30, 43, 66, 0)); }

.band {
  position: relative;
  z-index: 1;
  padding-block: clamp(.9rem, 2vw, 1.25rem);
  border-block: var(--hair);
  background: linear-gradient(90deg, rgba(61, 245, 212, .09), rgba(255, 92, 57, .07) 58%, transparent);
}
.band__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .75rem 2rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--slate);
}

/* ---------- 5. 文字组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: currentColor; opacity: .75; }
.eyebrow--orange { color: var(--orange); }

.chapter-num {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .24em;
  color: var(--cyan);
}

.display-title {
  font-size: clamp(2.8rem, 7vw, 6rem);
  line-height: .98;
  letter-spacing: -.03em;
}
.section-head { display: grid; gap: .9rem; max-width: 64ch; margin-bottom: clamp(2rem, 4vw, 3.2rem); }
.section-head__title { font-size: clamp(1.8rem, 3.5vw, 3rem); }
.section-head__lead { color: var(--slate); font-size: 1.0625rem; max-width: 58ch; }
.lede { font-size: clamp(1.05rem, 1.5vw, 1.25rem); line-height: 1.85; color: var(--mist); opacity: .88; max-width: 48ch; }
.text-muted { color: var(--slate); }
.mono { font-family: var(--font-mono); font-size: .875rem; letter-spacing: .02em; }

/* ---------- 6. 按钮与标签 ---------- */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--white);
  --btn-line: var(--line);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .7rem 1.15rem;
  border: 1px solid var(--btn-line);
  border-radius: var(--radius-xs);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .24s var(--ease), color .24s var(--ease),
              border-color .24s var(--ease), transform .18s var(--ease), box-shadow .24s var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(1px); box-shadow: none; }
.btn--primary { --btn-bg: var(--cyan); --btn-fg: var(--ink-950); --btn-line: var(--cyan); box-shadow: var(--glow); }
.btn--primary:hover { --btn-bg: #78fbe0; --btn-line: #78fbe0; }
.btn--ghost { --btn-line: rgba(184, 255, 240, .26); --btn-fg: var(--mist); }
.btn--ghost:hover { --btn-line: var(--cyan); --btn-fg: var(--cyan); background: var(--cyan-soft); }
.btn--sm { padding: .48rem .8rem; font-size: .875rem; letter-spacing: .06em; }
.btn--block { width: 100%; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .22rem .6rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  background: rgba(18, 28, 51, .68);
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--slate);
  white-space: nowrap;
}
.tag--cyan { color: var(--cyan); border-color: rgba(61, 245, 212, .42); background: var(--cyan-soft); }
.tag--orange { color: var(--orange); border-color: rgba(255, 92, 57, .45); background: var(--orange-soft); }
.tag--solid { color: var(--ink-950); background: var(--cyan); border-color: var(--cyan); font-weight: 600; }

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .34rem .7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(18, 28, 51, .7);
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--slate);
  white-space: nowrap;
}
.status-chip__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(61, 245, 212, .14), 0 0 12px rgba(61, 245, 212, .8);
  animation: chip-pulse 2.4s ease-in-out infinite;
}
.status-chip__text { line-height: 1.4; }
.status-chip[data-status="update"] { border-color: rgba(255, 92, 57, .4); }
.status-chip[data-status="update"] .status-chip__dot { background: var(--orange); box-shadow: 0 0 0 3px rgba(255, 92, 57, .16), 0 0 12px rgba(255, 92, 57, .75); }
.status-chip[data-status="update"] .status-chip__text { color: var(--orange); }
@keyframes chip-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .42; } }

/* ---------- 7. 面板 / 卡片 / 指标 ---------- */
.card {
  position: relative;
  display: block;
  padding: clamp(1.1rem, 2vw, 1.6rem);
  border: var(--hair);
  border-radius: var(--radius-md);
  background: linear-gradient(158deg, rgba(18, 28, 51, .92), rgba(10, 16, 32, .94));
  box-shadow: var(--shadow);
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.card:hover { transform: translateY(-3px); border-color: rgba(61, 245, 212, .42); box-shadow: var(--shadow), 0 0 32px -20px rgba(61, 245, 212, .8); }
.card__top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: .9rem; }
.card__title { font-size: 1.3rem; letter-spacing: -.01em; }
.card__meta { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; color: var(--slate); }
.card__body { margin-top: .7rem; color: var(--slate); font-size: .95rem; line-height: 1.8; }
.card--accent { border-left: 2px solid var(--orange); }

.panel {
  border: var(--hair);
  border-radius: var(--radius-md);
  background: rgba(12, 21, 38, .74);
  overflow: hidden;
}
.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .95rem 1.25rem;
  border-bottom: var(--hair);
  background: rgba(18, 28, 51, .62);
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--white);
}
.panel__body { padding: clamp(1.1rem, 2.4vw, 1.75rem); }

.stat { display: grid; gap: .2rem; }
.stat__value {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -.02em;
  color: var(--cyan);
  line-height: 1.15;
}
.stat__label { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--slate); }

/* ---------- 8. 图像容器（响应式基础） ---------- */
.media {
  position: relative;
  border: var(--hair);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: linear-gradient(152deg, #101B31, #0A1020);
}
.media__frame {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-image:
    radial-gradient(120% 90% at 82% 8%, rgba(61, 245, 212, .16), transparent 62%),
    linear-gradient(180deg, #101A30, #0A1020);
  background-size: cover;
  background-position: center;
}
.media__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(30, 43, 66, .7) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 43, 66, .7) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: .45;
}
.media__img { width: 100%; height: 100%; object-fit: cover; }
.media__caption {
  padding: .7rem 1rem;
  border-top: var(--hair);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--slate);
}
.media--wide .media__frame { aspect-ratio: 21 / 9; }
.media--tall .media__frame { aspect-ratio: 4 / 5; }

/* ---------- 9. 数据表 ---------- */
.table-wrap {
  overflow-x: auto;
  border: var(--hair);
  border-radius: var(--radius-md);
  background: rgba(12, 21, 38, .72);
  -webkit-overflow-scrolling: touch;
}
.data-table { width: 100%; min-width: 640px; font-family: var(--font-mono); font-size: .875rem; }
.data-table caption { padding: .9rem 1rem; text-align: left; font-size: .75rem; letter-spacing: .14em; color: var(--slate); }
.data-table th, .data-table td { padding: .75rem 1rem; text-align: left; border-bottom: 1px solid var(--line); }
.data-table thead th { background: rgba(18, 28, 51, .8); color: var(--mist); font-weight: 600; letter-spacing: .08em; white-space: nowrap; }
.data-table tbody tr { transition: background-color .2s var(--ease); }
.data-table tbody tr:hover { background: rgba(61, 245, 212, .05); }
.data-table tbody tr:last-child th, .data-table tbody tr:last-child td { border-bottom: 0; }
.data-table .is-highlight { color: var(--orange); }

/* ---------- 10. 索引 / 面包屑 ---------- */
.index-rail { position: relative; display: grid; gap: .9rem; align-content: start; }
.index-rail__title { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .24em; text-transform: uppercase; color: var(--slate); }
.index-rail__list { display: grid; gap: .2rem; }
.index-rail__link {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  margin-left: -1px;
  padding: .5rem .9rem;
  border-left: 2px solid transparent;
  color: var(--slate);
  font-size: .9375rem;
  text-decoration: none;
  transition: color .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
}
.index-rail__link:hover { color: var(--mist); background: rgba(18, 28, 51, .6); }
.index-rail__link[data-active="true"] { color: var(--cyan); border-left-color: var(--cyan); background: var(--cyan-soft); }
.index-rail__num { font-family: var(--font-mono); font-size: .72rem; opacity: .75; }

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  margin-bottom: 1.5rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--slate);
}
.breadcrumbs__item { display: inline-flex; align-items: center; gap: .5rem; }
.breadcrumbs__item + .breadcrumbs__item::before { content: "/"; color: #2A3A57; }
.breadcrumbs__link { color: var(--slate); text-decoration: none; transition: color .2s var(--ease); }
.breadcrumbs__link:hover { color: var(--cyan); }
.breadcrumbs [aria-current="page"] { color: var(--mist); }

/* ---------- 11. 长文 ---------- */
.prose { max-width: 72ch; font-size: 1.0625rem; line-height: 1.9; color: var(--mist); }
.prose > * + * { margin-top: 1.15em; }
.prose h2 { margin-top: 2.2em; font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
.prose h3 { margin-top: 1.7em; font-size: 1.15rem; }
.prose ul { display: grid; gap: .5em; }
.prose li { position: relative; padding-left: 1.2em; }
.prose li::before { content: "—"; position: absolute; left: 0; color: var(--cyan); opacity: .75; }
.prose a { color: var(--cyan); text-underline-offset: 3px; }

/* ---------- 12. 横向赛区通道 ---------- */
.channel-track {
  display: flex;
  gap: var(--gap);
  overflow-x: auto;
  padding-bottom: 1.1rem;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  cursor: grab;
}
.channel-track > * { flex: 0 0 clamp(240px, 32vw, 320px); scroll-snap-align: start; }
.channel-track[data-dragging="true"] { cursor: grabbing; scroll-snap-type: none; user-select: none; }
.channel-track::-webkit-scrollbar { height: 6px; }
.channel-track::-webkit-scrollbar-thumb { background: #24334f; border-radius: 999px; }

/* ---------- 13. 显现动效 ---------- */
html.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  will-change: opacity, transform;
}
html.js-ready [data-reveal].is-revealed { opacity: 1; transform: none; }

/* ---------- 14. 页头 ---------- */
.skip-link {
  position: fixed;
  top: .75rem;
  left: .75rem;
  z-index: 200;
  padding: .6rem 1rem;
  border-radius: var(--radius-xs);
  background: var(--cyan);
  color: var(--ink-950);
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: .06em;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform .22s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  background: linear-gradient(180deg, rgba(10, 16, 32, .92), rgba(10, 16, 32, 0));
  transition: background-color .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header[data-scrolled="true"] {
  background: rgba(10, 16, 32, .94);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 20px 45px -38px #000;
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(.75rem, 2vw, 1.6rem);
  min-height: var(--header-h);
}

.brand { display: inline-flex; align-items: center; gap: .7rem; flex: 0 0 auto; text-decoration: none; }
.brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(61, 245, 212, .5);
  border-radius: 4px;
  background: linear-gradient(150deg, rgba(61, 245, 212, .18), rgba(255, 92, 57, .1));
}
.brand__mark::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(61, 245, 212, .55);
  border-radius: 2px;
}
.brand__pulse {
  width: 9px;
  height: 9px;
  border-radius: 1px;
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(61, 245, 212, .9);
  animation: chip-pulse 2.6s ease-in-out infinite;
}
.brand__text { display: grid; }
.brand__name { font-family: var(--font-head); font-weight: 800; font-size: 1.1rem; letter-spacing: .08em; color: var(--white); line-height: 1.15; }
.brand__sub { font-family: var(--font-mono); font-size: .58rem; letter-spacing: .18em; text-transform: uppercase; color: var(--slate); }

.site-nav { margin-inline: auto; }
.site-nav__list { display: flex; align-items: center; gap: clamp(.35rem, 1.2vw, 1.15rem); }
.site-nav__item { display: block; }
.site-nav__link {
  position: relative;
  display: inline-block;
  padding: .55rem .35rem;
  color: var(--mist);
  font-size: .9375rem;
  text-decoration: none;
  transition: color .2s var(--ease);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: .35rem;
  right: .35rem;
  bottom: .18rem;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .3s var(--ease), background-color .3s var(--ease);
}
.site-nav__link:hover { color: var(--white); }
.site-nav__link:hover::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] { color: var(--cyan); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); background: var(--orange); }

.header-actions { display: flex; align-items: center; gap: .55rem; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: .5rem;
  padding: .5rem .7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  background: rgba(18, 28, 51, .75);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  cursor: pointer;
  transition: border-color .22s var(--ease), color .22s var(--ease);
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }
.nav-toggle__bars { position: relative; width: 18px; height: 12px; flex: 0 0 auto; }
.nav-toggle__bars::before, .nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform .28s var(--ease);
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle__label { line-height: 1; }

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: rgba(30, 43, 66, .7);
  overflow: hidden;
}
.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .1s linear;
}

/* ---------- 15. 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(4rem, 9vw, 7rem);
  border-top: var(--hair);
  background: linear-gradient(180deg, rgba(12, 21, 38, .55), rgba(6, 35, 31, .42));
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(61, 245, 212, .6), transparent);
}
.site-footer__inner { padding-block: clamp(3rem, 6vw, 4.5rem) 2rem; }

.footer-grid { display: grid; gap: clamp(1.75rem, 4vw, 3rem); grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.footer-brand { display: grid; gap: .8rem; align-content: start; max-width: 46ch; }
.footer-brand__name { font-family: var(--font-head); font-weight: 800; font-size: 1.55rem; letter-spacing: .06em; color: var(--white); line-height: 1.2; }
.footer-brand__stamp { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .2em; text-transform: uppercase; color: var(--cyan); }
.footer-brand__note { color: var(--slate); font-size: .9rem; line-height: 1.8; }

.footer-col { display: grid; gap: .9rem; align-content: start; }
.footer-col__title {
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--mist);
}
.footer-links { display: grid; gap: .5rem; }
.footer-links__link {
  display: inline-block;
  color: var(--slate);
  font-size: .9375rem;
  text-decoration: none;
  transition: color .2s var(--ease), transform .2s var(--ease);
}
.footer-links__link:hover { color: var(--cyan); transform: translateX(3px); }
.footer-links__link[aria-current="page"] { color: var(--cyan); }

.footer-contact { display: grid; gap: .8rem; }
.footer-contact__item { display: grid; gap: .1rem; }
.footer-contact__label { font-family: var(--font-mono); font-size: .66rem; letter-spacing: .2em; text-transform: uppercase; color: var(--slate); }
.footer-contact__value { color: var(--mist); font-size: .9375rem; line-height: 1.7; word-break: break-word; }

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .6rem 1.5rem;
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
  padding-top: 1.5rem;
  border-top: var(--hair);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--slate);
}
.footer-base__legal { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; }
.footer-icp { color: var(--slate); }
.footer-base__meta { color: #5E6E86; }

/* ---------- 16. 响应式 ---------- */
@media (min-width: 900px) {
  .split { grid-template-columns: minmax(210px, .34fr) minmax(0, 1fr); }
  .split--wide { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); }
  .index-rail { position: sticky; top: calc(var(--header-h) + 1.5rem); }
}
@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: minmax(280px, 1.6fr) repeat(3, minmax(150px, 1fr)); }
}

@media (max-width: 1024px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    margin: 0;
    padding: .9rem clamp(1.5rem, 5vw, 2.5rem) 1.5rem;
    background: rgba(10, 16, 32, .98);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: var(--hair);
    box-shadow: 0 30px 50px -40px #000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity .26s var(--ease), transform .26s var(--ease), visibility .26s var(--ease);
  }
  .site-nav[data-open="true"] { opacity: 1; visibility: visible; transform: none; }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: .1rem; }
  .site-nav__link { display: block; padding: .8rem .6rem; font-size: 1.05rem; border-bottom: 1px solid var(--line); }
  .site-nav__link::after { display: none; }
  .site-nav__link[aria-current="page"] { background: var(--cyan-soft); }
  .header-actions { margin-left: auto; }
}

@media (max-width: 760px) {
  :root { --header-h: 66px; }
  .brand__sub { display: none; }
  .status-chip { display: none; }
  .site-nav { inset: var(--header-h) 0 auto 0; }
  .header-actions .btn--ghost { display: none; }
  .data-table { font-size: .8125rem; }
  .footer-base { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .btn { padding: .62rem .9rem; font-size: .9375rem; }
  .btn--sm { padding: .45rem .7rem; font-size: .8125rem; }
  .brand__mark { width: 30px; height: 30px; }
  .footer-grid { gap: 1.5rem; }
}

/* ---------- 17. 降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  html.js-ready [data-reveal] { opacity: 1 !important; transform: none !important; }
  .brand__pulse, .status-chip__dot { animation: none; }
  .btn:hover, .card:hover, .footer-links__link:hover { transform: none; }
}