/* ============================================================
   百胜游戏 · 版本档案终端
   共享外壳样式 /assets/site.css
   结构：侧边品牌轨道 + 双层导航头部 + 档案型页脚 + 通用组件
   ============================================================ */

/* ---------- 1. reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, figure, blockquote { margin: 0; }
img, svg, video { max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; }
table { border-collapse: collapse; border-spacing: 0; }
[hidden] { display: none !important; }

/* ---------- 2. tokens ---------- */
:root {
  --ink-900: #05060E;
  --ink-800: #0B1226;
  --glass: #16224A;
  --magenta: #FF2E7E;
  --cyan: #22E0E0;
  --amber: #FFB627;
  --green: #4BE39A;
  --coral: #FF6B5E;
  --paper: #EAF0FF;
  --muted: #8B9BC4;

  --rail: 72px;
  --shell-max: 1440px;
  --wrap-max: 1240px;
  --gutter: clamp(16px, 3.2vw, 44px);
  --gap: clamp(18px, 2.4vw, 32px);

  --line-soft: rgba(139, 155, 196, .18);
  --line-cyan: rgba(34, 224, 224, .22);
  --line-magenta: rgba(255, 46, 126, .24);

  --font-head: "Barlow Condensed", "Oswald", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "IBM Plex Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --dur: .18s;
  --radius: 10px;
  --radius-sm: 6px;
}

/* ---------- 3. base ---------- */
body {
  min-height: 100vh;
  padding-left: var(--rail);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(1200px 620px at 10% -12%, rgba(255, 46, 126, .16), transparent 62%),
    radial-gradient(920px 540px at 98% 2%, rgba(34, 224, 224, .13), transparent 60%),
    linear-gradient(180deg, #05060E 0%, #070A18 46%, #05060E 100%);
  background-attachment: fixed;
}

/* 细密扫描线（静态）+ 8 秒下扫冷光带 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: repeating-linear-gradient(180deg, rgba(234, 240, 255, .045) 0 1px, transparent 1px 4px);
}
body::after {
  content: "";
  position: fixed;
  left: 0;
  right: 0;
  top: -34vh;
  height: 34vh;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(34, 224, 224, .055) 50%, transparent);
  animation: beam 8s linear infinite;
}
@keyframes beam { from { transform: translateY(0); } to { transform: translateY(134vh); } }
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.82); }
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -.02em;
  transform: scaleX(1.03);
  transform-origin: left center;
  color: var(--paper);
}
h1 { font-size: clamp(30px, 4.6vw, 40px); }
h2 { font-size: clamp(23px, 3.1vw, 28px); }
h3 { font-size: 20px; }
p { line-height: 1.75; }
strong, b { font-weight: 700; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: -.01em;
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: -90px;
  left: 10px;
  z-index: 120;
  padding: 10px 18px;
  border-radius: 8px;
  background: var(--amber);
  color: #05060E;
  font-weight: 700;
  text-decoration: none;
  transition: top .16s var(--ease);
}
.skip-link:focus { top: 10px; }

/* ---------- 4. 通用组件 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: clamp(38px, 6vw, 84px); }
.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  margin-bottom: clamp(18px, 3vw, 32px);
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--cyan);
}
.lead {
  font-size: 17px;
  max-width: 62ch;
  color: rgba(234, 240, 255, .86);
}

.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.grid > * { min-width: 0; }
.col-3, .col-4, .col-5, .col-6, .col-7, .col-8 { grid-column: span 12; }
@media (min-width: 860px) {
  .col-3 { grid-column: span 3; }
  .col-4 { grid-column: span 4; }
  .col-5 { grid-column: span 5; }
  .col-6 { grid-column: span 6; }
  .col-7 { grid-column: span 7; }
  .col-8 { grid-column: span 8; }
}
@media (max-width: 859px) {
  .grid--2, .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(22, 34, 74, .72), rgba(11, 18, 38, .88));
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.panel--solid { background: var(--ink-800); -webkit-backdrop-filter: none; backdrop-filter: none; }
.panel--edge::after {
  content: "";
  position: absolute;
  left: -1px;
  top: 14%;
  width: 2px;
  height: 72%;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--magenta), var(--cyan));
}

.sweep { position: relative; overflow: hidden; }
.sweep::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  padding: 1px;
  border-radius: inherit;
  background: linear-gradient(90deg, transparent, var(--magenta), var(--cyan), transparent);
  background-size: 220% 100%;
  background-position: 200% 0;
  opacity: 0;
  pointer-events: none;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  transition: opacity .2s var(--ease);
}
.sweep:hover::before { opacity: 1; animation: sweep-x 1.4s linear infinite; }
@keyframes sweep-x {
  from { background-position: 200% 0; }
  to { background-position: -60% 0; }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid var(--line-cyan);
  border-radius: 8px;
  background: rgba(22, 34, 74, .5);
  color: var(--paper);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .02em;
  text-decoration: none;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease),
              color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.btn:hover {
  border-color: var(--cyan);
  color: #fff;
  box-shadow: 0 0 0 1px rgba(34, 224, 224, .35), 0 10px 26px rgba(34, 224, 224, .18);
}
.btn--primary {
  border-color: rgba(255, 46, 126, .6);
  background: linear-gradient(120deg, rgba(255, 46, 126, .24), rgba(22, 34, 74, .35));
  color: #fff;
  box-shadow: 0 10px 26px rgba(255, 46, 126, .2);
}
.btn--primary:hover {
  border-color: var(--magenta);
  background: linear-gradient(120deg, var(--magenta), #C41E63);
  color: #05060E;
}
.btn--ghost { background: transparent; border-color: var(--line-soft); color: var(--muted); }
.btn--ghost:hover { color: var(--paper); border-color: var(--cyan); box-shadow: none; }
.btn--compact { padding: 8px 15px; font-size: 13px; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: rgba(22, 34, 74, .42);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--muted);
}
.tag--cyan { color: var(--cyan); border-color: rgba(34, 224, 224, .4); background: rgba(34, 224, 224, .08); }
.tag--amber { color: var(--amber); border-color: rgba(255, 182, 39, .42); background: rgba(255, 182, 39, .08); }
.tag--green { color: var(--green); border-color: rgba(75, 227, 154, .42); background: rgba(75, 227, 154, .08); }
.tag--coral { color: var(--coral); border-color: rgba(255, 107, 94, .42); background: rgba(255, 107, 94, .08); }
.tag--magenta { color: var(--magenta); border-color: rgba(255, 46, 126, .45); background: rgba(255, 46, 126, .09); }

.breadcrumbs {
  padding: 18px 0 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}
.breadcrumbs__list { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumbs__link {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.breadcrumbs__link:hover { color: var(--cyan); border-bottom-color: rgba(34, 224, 224, .5); }
.breadcrumbs__sep { color: rgba(139, 155, 196, .45); }
.breadcrumbs__current { color: var(--paper); }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(11, 18, 38, .66);
}
.data-table { width: 100%; min-width: 560px; font-size: 14px; }
.data-table caption {
  padding: 12px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
  border-bottom: 1px solid var(--line-soft);
}
.data-table th {
  padding: 12px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(34, 224, 224, .07);
  border-bottom: 1px solid var(--line-cyan);
  white-space: nowrap;
}
.data-table td {
  padding: 12px 16px;
  vertical-align: top;
  border-bottom: 1px solid rgba(139, 155, 196, .12);
}
.data-table tbody tr:nth-child(even) { background: rgba(22, 34, 74, .42); }
.data-table tbody tr:hover { background: rgba(255, 46, 126, .07); }

.filter-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.filter-btn {
  padding: 7px 14px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: rgba(11, 18, 38, .6);
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.filter-btn:hover { color: var(--paper); border-color: var(--cyan); }
.filter-btn[aria-pressed="true"] {
  color: #05060E;
  border-color: transparent;
  background: linear-gradient(120deg, var(--cyan), var(--magenta));
  font-weight: 500;
}
.filter-count { font-family: var(--font-mono); font-size: 12px; color: var(--muted); }

.media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  background: linear-gradient(140deg, #0B1226, #16224A);
}
.media > img { display: block; width: 100%; height: 100%; object-fit: cover; }
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media--frame { outline: 1px solid var(--line-cyan); outline-offset: -1px; }
.media--frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(5, 6, 14, .8));
  pointer-events: none;
}
.media__label { position: absolute; left: 12px; bottom: 12px; z-index: 2; }
.media__scan {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(180deg, rgba(234, 240, 255, .05) 0 1px, transparent 1px 4px);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .45s var(--ease), transform .45s var(--ease);
}
[data-reveal="in"] { opacity: 1; transform: none; }

[data-copy][data-copied="true"] { color: var(--green); border-color: rgba(75, 227, 154, .5); }

/* ---------- 5. 头部：侧边轨道 ---------- */
.brand-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 70;
  width: var(--rail);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 16px 0 18px;
  background: linear-gradient(180deg, rgba(11, 18, 38, .97), rgba(5, 6, 14, .99));
  border-right: 1px solid var(--line-cyan);
}
.brand-rail::after {
  content: "";
  position: absolute;
  top: 0;
  right: -1px;
  width: 1px;
  height: 100%;
  background: linear-gradient(180deg, transparent, rgba(255, 46, 126, .75), rgba(34, 224, 224, .75), transparent);
  opacity: .65;
}
.brand-rail__mark {
  flex: 0 0 auto;
  padding: 8px 5px;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  background: linear-gradient(180deg, rgba(255, 46, 126, .16), rgba(34, 224, 224, .12));
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .34em;
  line-height: 1;
  color: var(--paper);
  text-decoration: none;
  writing-mode: vertical-rl;
}
.brand-rail__label {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .3em;
  color: var(--muted);
  writing-mode: vertical-rl;
}
.rail-gauge {
  position: relative;
  flex: 1 1 auto;
  width: 3px;
  margin: 6px 0;
  border-radius: 2px;
  background: rgba(139, 155, 196, .18);
  overflow: hidden;
}
.rail-gauge__fill {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleY(0);
  transform-origin: top center;
  background: linear-gradient(180deg, var(--cyan), var(--magenta));
  transition: transform .12s linear;
}
.brand-rail__signal {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(75, 227, 154, .15), 0 0 12px rgba(75, 227, 154, .8);
  animation: pulse 1.6s ease-in-out infinite;
}

/* ---------- 6. 头部：双层导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(5, 6, 14, .97), rgba(11, 18, 38, .88));
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid var(--line-cyan);
}
.site-header::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--magenta), rgba(34, 224, 224, .6) 42%, transparent 88%);
  opacity: .7;
  pointer-events: none;
}
.header-top {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 26px);
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 14px var(--gutter) 12px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  padding: 2px;
  text-decoration: none;
}
.brand__glyph {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 9px;
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: #05060E;
  background: linear-gradient(135deg, var(--magenta), var(--cyan));
  box-shadow: 0 8px 22px rgba(255, 46, 126, .28);
}
.brand__text { display: flex; flex-direction: column; gap: 2px; line-height: 1.1; }
.brand__name {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--paper);
  transform: scaleX(1.03);
  transform-origin: left center;
}
.brand__sub {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .22em;
  color: var(--cyan);
}
.header-tagline {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  padding-left: 14px;
  border-left: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.4vw, 16px);
  margin-left: auto;
  flex: 0 0 auto;
}
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid rgba(34, 224, 224, .35);
  border-radius: 999px;
  background: rgba(34, 224, 224, .08);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--cyan);
  white-space: nowrap;
}
.status-chip__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px rgba(75, 227, 154, .9);
  animation: pulse 1.6s ease-in-out infinite;
}
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line-cyan);
  border-radius: 8px;
  background: rgba(22, 34, 74, .5);
  cursor: pointer;
}
.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 18px;
  height: 12px;
}
.nav-toggle__bar {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] { border-color: rgba(255, 46, 126, .6); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar { background: var(--magenta); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.header-nav {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--line-soft);
  background: rgba(5, 6, 14, .4);
}
.nav-track {
  counter-reset: nav-no;
  display: flex;
  align-items: stretch;
  gap: 2px;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}
.nav-track::-webkit-scrollbar { display: none; }
.nav-item { counter-increment: nav-no; display: flex; flex: 0 0 auto; }
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 15px 11px;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: .02em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease);
}
.nav-link::before {
  content: counter(nav-no, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 10px;
  color: rgba(139, 155, 196, .6);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--magenta), var(--cyan));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .2s var(--ease);
}
.nav-link:hover { color: var(--paper); }
.nav-link:hover::after { transform: scaleX(.5); }
.nav-link[aria-current="page"] { color: var(--paper); font-weight: 500; }
.nav-link[aria-current="page"]::before { color: var(--magenta); }
.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  box-shadow: 0 0 12px rgba(255, 46, 126, .6);
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 3;
  margin-top: clamp(56px, 9vw, 130px);
  border-top: 1px solid var(--line-magenta);
  background: linear-gradient(180deg, rgba(11, 18, 38, .72), rgba(5, 6, 14, .99) 62%);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 42%;
  height: 1px;
  background: linear-gradient(90deg, var(--magenta), rgba(34, 224, 224, .5), transparent);
  pointer-events: none;
}
.site-footer::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(620px 220px at 6% 0%, rgba(255, 46, 126, .12), transparent 70%);
}
.footer-inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: clamp(26px, 3.4vw, 52px);
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: clamp(34px, 5vw, 64px) var(--gutter) clamp(22px, 3vw, 34px);
}
.footer-brand__link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.footer-brand__glyph {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 9px;
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: #05060E;
  background: linear-gradient(135deg, var(--magenta), var(--cyan));
}
.footer-brand__name {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .02em;
  transform: scaleX(1.03);
  transform-origin: left center;
}
.footer-brand__tagline {
  margin-top: 14px;
  max-width: 36ch;
  font-size: 13.5px;
  color: var(--muted);
}
.footer-brand__meta {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: rgba(139, 155, 196, .85);
}
.footer-col__title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--cyan);
  transform: none;
}
.footer-list { display: flex; flex-direction: column; gap: 9px; }
.footer-link {
  position: relative;
  display: inline-block;
  align-self: flex-start;
  font-size: 14px;
  color: rgba(234, 240, 255, .78);
  text-decoration: none;
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.footer-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--magenta);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}
.footer-link:hover { color: var(--paper); transform: translateX(3px); }
.footer-link:hover::after { transform: scaleX(1); }
.footer-lines { display: flex; flex-direction: column; gap: 8px; }
.footer-line {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  overflow-wrap: anywhere;
}
.footer-legal {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(139, 155, 196, .14);
  background: rgba(5, 6, 14, .6);
}
.footer-legal__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 26px;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 20px var(--gutter) clamp(26px, 4vw, 42px);
}
.footer-legal__icp {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}
.footer-legal__note {
  flex: 1 1 320px;
  max-width: 62ch;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(139, 155, 196, .88);
}
.footer-legal__copy {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(139, 155, 196, .72);
}

/* ---------- 8. 响应式 ---------- */
@media (min-width: 901px) {
  .skip-link { left: calc(var(--rail) + 12px); }
}
@media (min-width: 1180px) {
  .footer-inner { grid-template-columns: 1.15fr .8fr .8fr 1.25fr; }
}
@media (min-width: 760px) and (max-width: 1179px) {
  .footer-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 1180px) {
  .header-tagline { display: none; }
}
@media (max-width: 900px) {
  body { padding-left: 0; }
  .brand-rail { display: none; }
  .header-nav {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 80;
    width: min(84vw, 330px);
    padding: 22px 8px 28px;
    border-top: 0;
    border-right: 1px solid var(--line-cyan);
    background: linear-gradient(180deg, rgba(11, 18, 38, .99), rgba(5, 6, 14, .99));
    box-shadow: 24px 0 60px rgba(0, 0, 0, .6);
    transform: translateX(-104%);
    transition: transform .2s var(--ease);
    overflow-y: auto;
  }
  .header-nav[data-open] { transform: translateX(0); }
  .nav-track {
    flex-direction: column;
    gap: 0;
    max-width: none;
    margin: 0;
    padding: 0 6px;
    overflow: visible;
  }
  .nav-item { display: block; }
  .nav-link {
    width: 100%;
    padding: 14px 12px;
    font-size: 15px;
    border-bottom: 1px solid rgba(139, 155, 196, .12);
  }
  .nav-link::after {
    left: 0;
    right: auto;
    top: 0;
    bottom: 0;
    width: 3px;
    height: auto;
    transform: scaleY(0);
    transform-origin: top center;
  }
  .nav-link:hover::after { transform: scaleY(.6); }
  .nav-link[aria-current="page"]::after { transform: scaleY(1); }
  .nav-toggle { display: inline-flex; }
}
@media (max-width: 720px) {
  .status-chip { display: none; }
}
@media (max-width: 600px) {
  .brand__sub { display: none; }
  .brand__glyph { width: 36px; height: 36px; font-size: 20px; }
  .brand__name { font-size: 18px; }
  .header-cta { padding: 7px 12px; font-size: 12.5px; }
  .footer-legal__inner { flex-direction: column; align-items: flex-start; }
}

/* ---------- 9. 无障碍：聚焦与减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  body::after { display: none; }
  [data-reveal] { opacity: 1; transform: none; }
  .rail-gauge__fill { transition: none; }
}