/* ============================================================
   易倍体育主站 · 共享样式 /assets/site.css
   深墨蓝基底 + 信号橙 + 荧光青，玻璃层与实色层并置
   ============================================================ */

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

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

body,
h1, h2, h3, h4, h5, h6,
p, dl, dd, figure, blockquote { margin: 0; }

ul, ol { margin: 0; padding: 0; }

img, svg, video { max-width: 100%; }

button { font: inherit; color: inherit; }

a { color: inherit; }

/* ---------- 变量 ---------- */
:root {
  --base-ink: #0A1422;
  --panel-navy: #101F33;
  --panel-navy-lift: #16263C;
  --glass: rgba(28, 48, 74, 0.45);
  --text-primary: #E9F0F8;
  --text-secondary: #93A6BE;
  --accent-orange: #FF6B2C;
  --accent-cyan: #2FE0D0;
  --league-blue: #4C8DFF;
  --league-violet: #A98BFF;
  --league-amber: #F2C14E;
  --league-green: #46D68A;
  --alert-red: #FF4D5E;
  --border-line: #1D3450;
  --ink-on-chip: #08121F;

  --rail-w: 234px;
  --topbar-h: 56px;
  --wrap-max: 1180px;
  --radius: 14px;
  --radius-sm: 9px;

  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "HarmonyOS Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-serif: Georgia, "Times New Roman", "Songti SC", SimSun, serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  --dur: 200ms;
  --dur-fast: 150ms;
  --ease: linear;
}

/* ---------- 基础排版 ---------- */
body {
  min-height: 100vh;
  padding-left: var(--rail-w);
  padding-top: var(--topbar-h);
  background-color: var(--base-ink);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.55;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.42;
  background-image:
    linear-gradient(to right, rgba(29, 52, 80, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(29, 52, 80, 0.6) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(120% 90% at 30% 0%, #000 0%, rgba(0, 0, 0, 0.35) 60%, transparent 100%);
  mask-image: radial-gradient(120% 90% at 30% 0%, #000 0%, rgba(0, 0, 0, 0.35) 60%, transparent 100%);
}

header, main, footer, .site-footer { position: relative; z-index: 1; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.012em;
  line-height: 1.2;
}

h1 { font-size: clamp(28px, 4vw, 44px); }
h2 { font-size: clamp(22px, 2.6vw, 32px); }
h3 { font-size: clamp(17px, 1.6vw, 21px); }

p { text-wrap: pretty; }

a { text-decoration: none; }

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

html[data-nav-lock],
html[data-nav-lock] body { overflow: hidden; }

/* ---------- 布局工具 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding-inline: clamp(16px, 3vw, 32px);
}

.wrap--wide { max-width: 1440px; }

.section { padding-block: clamp(38px, 5vw, 72px); }
.section--tight { padding-block: clamp(22px, 3vw, 38px); }

.section--narrow { max-width: 760px; }
.section--narrow .wrap { max-width: 760px; }

.section__head { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px 20px; margin-bottom: 26px; }
.section__title { margin: 0; }
.section__note { color: var(--text-secondary); font-size: 13.5px; max-width: 56ch; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-cyan);
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: currentColor; }

.lede { font-size: 16.5px; color: var(--text-primary); opacity: 0.92; max-width: 62ch; }

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--accent-orange);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--border-line);
  border-radius: 999px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  background: rgba(16, 31, 51, 0.7);
}

/* ---------- 按钮 ---------- */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--text-primary);
  --btn-line: var(--border-line);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--btn-fg);
  background-color: var(--btn-bg);
  border: 1px solid var(--btn-line);
  border-radius: 8px;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    color var(--dur) var(--ease), transform var(--dur-fast) var(--ease);
}
.btn:hover { transform: translateY(-1px); }

.btn--primary { --btn-bg: var(--accent-orange); --btn-fg: var(--ink-on-chip); --btn-line: transparent; }
.btn--primary:hover { --btn-bg: #FF8047; }

.btn--ghost { --btn-bg: rgba(28, 48, 74, 0.5); --btn-line: var(--border-line); }
.btn--ghost:hover { --btn-line: var(--accent-cyan); --btn-fg: var(--accent-cyan); }

.btn--sm { padding: 7px 12px; font-size: 13px; }

/* ---------- 面板 / 网格 ---------- */
.panel {
  background-color: var(--panel-navy);
  border: 1px solid var(--border-line);
  border-radius: var(--radius);
  padding: clamp(18px, 2.4vw, 24px);
}

.panel--glass {
  background-color: var(--glass);
  backdrop-filter: blur(12px) saturate(125%);
  -webkit-backdrop-filter: blur(12px) saturate(125%);
}

.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ---------- 媒体容器 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--border-line);
  border-radius: var(--radius);
  background-color: var(--panel-navy-lift);
  background-image: linear-gradient(140deg, #17293F 0%, #0C1828 58%, #101F33 100%);
}

.media img,
.media > svg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.04);
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(233, 240, 248, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(233, 240, 248, 0.06) 1px, transparent 1px);
  background-size: 34px 34px;
}

.media--wide { aspect-ratio: 21 / 9; }
.media--square { aspect-ratio: 1 / 1; }

.media__caption {
  position: absolute;
  left: 12px;
  bottom: 12px;
  z-index: 2;
  padding: 5px 10px;
  border-radius: 7px;
  background-color: rgba(10, 20, 34, 0.78);
  border: 1px solid var(--border-line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

/* ---------- 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 0;
  list-style: none;
  margin: 0 0 18px;
  font-size: 12.5px;
  color: var(--text-secondary);
}
.crumbs li { display: inline-flex; align-items: center; }
.crumbs li::after { content: "/"; margin: 0 9px; color: var(--border-line); }
.crumbs li:last-child::after { content: ""; margin: 0; }
.crumbs a { color: var(--text-secondary); }
.crumbs a:hover { color: var(--accent-cyan); }
.crumbs [aria-current="page"] { color: var(--text-primary); }

/* ---------- 显现动效 ---------- */
html.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 240ms var(--ease), transform 240ms var(--ease);
}
html.js .reveal.is-in { opacity: 1; transform: none; }

/* ============================================================
   跳过链接
   ============================================================ */
.skip-link {
  position: fixed;
  top: 10px;
  left: calc(var(--rail-w) + 14px);
  z-index: 220;
  padding: 10px 16px;
  border-radius: 8px;
  background-color: var(--accent-cyan);
  color: var(--ink-on-chip);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  transform: translateY(-180%);
  transition: transform var(--dur-fast) var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ============================================================
   顶部挂载栏
   ============================================================ */
.topbar {
  position: fixed;
  top: 0;
  left: var(--rail-w);
  right: 0;
  z-index: 60;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 12px;
  padding-inline: 16px;
  background-color: rgba(10, 20, 34, 0.86);
  backdrop-filter: blur(14px) saturate(130%);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  border-bottom: 1px solid var(--border-line);
}

.topbar::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: calc(var(--progress, 0) * 100%);
  background-image: linear-gradient(90deg, var(--accent-cyan), var(--accent-orange));
}

.topbar__lead {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-secondary);
  white-space: nowrap;
}

.topbar__brand {
  display: none;
  align-items: center;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  white-space: nowrap;
}

.mount-bar {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-block: 4px;
}
.mount-bar::-webkit-scrollbar { display: none; }

.chip {
  --chip: var(--league-blue);
  position: relative;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 9px;
  background-color: rgba(16, 31, 51, 0.9);
  border: 1px solid var(--border-line);
  border-radius: 7px;
  color: var(--text-secondary);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  cursor: grab;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.chip::after {
  content: "";
  width: 3px;
  height: 11px;
  background-image: repeating-linear-gradient(to bottom, currentColor 0 1.5px, transparent 1.5px 3.5px);
  opacity: 0.4;
}

.chip__dot {
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background-color: var(--chip);
  box-shadow: 0 0 8px var(--chip);
}

.chip:hover { color: var(--text-primary); border-color: var(--chip); }

.chip[aria-pressed="true"] {
  background-color: var(--chip);
  border-color: var(--chip);
  color: var(--ink-on-chip);
  font-weight: 800;
}
.chip[aria-pressed="true"] .chip__dot { background-color: var(--ink-on-chip); box-shadow: none; }

.chip.is-dragging { opacity: 0.4; cursor: grabbing; }

.chip.is-drop-target {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 2px rgba(47, 224, 208, 0.32);
}

.topbar__status {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-left: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  white-space: nowrap;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 0 0 rgba(47, 224, 208, 0.55);
  animation: status-pulse 2.6s linear infinite;
}

@keyframes status-pulse {
  0% { box-shadow: 0 0 0 0 rgba(47, 224, 208, 0.5); }
  70% { box-shadow: 0 0 0 7px rgba(47, 224, 208, 0); }
  100% { box-shadow: 0 0 0 0 rgba(47, 224, 208, 0); }
}

.topbar__collapse {
  flex: 0 0 auto;
  padding: 6px 11px;
  background-color: transparent;
  border: 1px solid var(--border-line);
  border-radius: 7px;
  color: var(--text-secondary);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.topbar__collapse:hover { color: var(--accent-cyan); border-color: var(--accent-cyan); }

.topbar[data-collapsed] .mount-bar { display: none; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  background-color: rgba(28, 48, 74, 0.5);
  border: 1px solid var(--border-line);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background-color: currentColor;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background-color: currentColor;
}
.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

.nav-toggle[aria-expanded="true"] { border-color: var(--accent-cyan); color: var(--accent-cyan); }

/* ============================================================
   侧边轨道
   ============================================================ */
.site-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 70;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 18px 14px 16px;
  overflow-y: auto;
  background-color: var(--glass);
  backdrop-filter: blur(16px) saturate(130%);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  border-right: 1px solid var(--border-line);
}

.rail__brand { padding: 4px 6px 14px; border-bottom: 1px solid var(--border-line); }

.brand { display: flex; align-items: center; gap: 10px; }

.brand__mark {
  position: relative;
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background-image: linear-gradient(150deg, var(--accent-cyan), var(--accent-orange));
  box-shadow: 0 0 18px rgba(47, 224, 208, 0.28);
}
.brand__mark::after {
  content: "";
  position: absolute;
  inset: 8px 6px;
  border-radius: 2px;
  background-color: var(--ink-on-chip);
  opacity: 0.8;
}

.brand__text { display: block; min-width: 0; }

.brand__name {
  display: block;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.012em;
  color: var(--text-primary);
}

.brand__sub {
  display: block;
  margin-top: 1px;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.rail-nav { display: flex; flex-direction: column; gap: 18px; }

.rail-nav__title {
  margin-bottom: 6px;
  padding-left: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.rail-nav__list {
  counter-reset: rail;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.rail-nav__list a {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  border-radius: 8px;
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.rail-nav__list a::before {
  counter-increment: rail;
  content: "0" counter(rail);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0;
  opacity: 0.6;
}

.rail-nav__list a:hover {
  color: var(--text-primary);
  background-color: rgba(233, 240, 248, 0.05);
}

.rail-nav__list a[aria-current="page"] {
  color: var(--text-primary);
  border-left-color: var(--accent-cyan);
  background-image: linear-gradient(90deg, rgba(47, 224, 208, 0.16), rgba(47, 224, 208, 0));
}
.rail-nav__list a[aria-current="page"]::before { color: var(--accent-cyan); opacity: 1; }

.rail-actions {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--border-line);
}

.rail__meta {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  opacity: 0.8;
}

.rail-scrim {
  position: fixed;
  inset: 0;
  z-index: 65;
  opacity: 0;
  pointer-events: none;
  background-color: rgba(6, 12, 20, 0.66);
  transition: opacity var(--dur) var(--ease);
}
.rail-scrim[data-open] { opacity: 1; pointer-events: auto; }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  margin-top: clamp(56px, 8vw, 96px);
  background-color: var(--base-ink);
  border-top: 1px solid var(--border-line);
}

.footer__strip {
  background-color: var(--panel-navy);
  border-bottom: 1px solid var(--border-line);
}

.footer__strip-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding-block: 13px;
  font-size: 12.5px;
  color: var(--text-secondary);
}

.footer__strip-label {
  padding: 3px 7px;
  border: 1px solid rgba(47, 224, 208, 0.35);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--accent-cyan);
}

.footer__strip-text { letter-spacing: 0.02em; }

.footer__body {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px 28px;
  padding-block: 46px 10px;
}

.footer__title {
  margin-bottom: 14px;
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.footer__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer__list a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color var(--dur) var(--ease);
}
.footer__list a:hover { color: var(--accent-cyan); }

.brand--footer .brand__name { font-size: 15.5px; }

.footer__note {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.footer__contact {
  margin-top: 30px;
  padding-block: 26px 0;
  border-top: 1px solid var(--border-line);
}

.contact-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.contact-item__label {
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.contact-item__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--text-primary);
  word-break: break-word;
}

.contact-item--wide .contact-item__value { font-family: var(--font-body); }

.footer__service {
  margin-top: 18px;
  max-width: 66ch;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: 24px;
  padding-block: 20px 28px;
  border-top: 1px solid var(--border-line);
  font-size: 12.5px;
  color: var(--text-secondary);
}

.footer__copy { margin: 0; }
.footer__record { margin: 0; font-family: var(--font-mono); }

.to-top {
  margin-left: auto;
  padding: 7px 13px;
  background-color: transparent;
  border: 1px solid var(--border-line);
  border-radius: 7px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.to-top:hover { color: var(--accent-cyan); border-color: var(--accent-cyan); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  :root { --rail-w: 210px; }
  .footer__body { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer__col:last-child { grid-column: span 3; }
}

@media (max-width: 900px) {
  :root { --rail-w: 0px; --topbar-h: 54px; }

  body { padding-left: 0; }

  .nav-toggle { display: inline-flex; }
  .topbar__brand { display: inline-flex; }
  .topbar__lead { display: none; }
  .topbar { gap: 10px; padding-inline: 12px; }

  .site-rail {
    width: min(84vw, 320px);
    visibility: hidden;
    transform: translateX(-102%);
    transition: transform var(--dur) var(--ease), visibility var(--dur) var(--ease);
    box-shadow: 22px 0 60px rgba(4, 9, 16, 0.55);
  }
  .site-rail[data-open] { visibility: visible; transform: translateX(0); }

  .skip-link { left: 14px; }

  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }

  .footer__body { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 22px; }
  .footer__col:last-child { grid-column: auto; }
  .footer__col--brand { grid-column: 1 / -1; }

  .contact-list { grid-template-columns: minmax(0, 1fr); gap: 14px; }
}

@media (max-width: 560px) {
  body { font-size: 15px; }

  .topbar__status .status-text { display: none; }
  .topbar__collapse { padding: 6px 8px; }

  .chip { padding: 5px 8px; font-size: 12px; }
  .chip::after { display: none; }

  .footer__body { grid-template-columns: minmax(0, 1fr); }
  .footer__base { flex-direction: column; align-items: flex-start; gap: 10px; }
  .to-top { margin-left: 0; }
}

/* ============================================================
   动效偏好与打印
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  html.js .reveal { opacity: 1; transform: none; }
  .status-dot { animation: none; }
  .site-rail,
  .rail-scrim { transition: none; }
}