/* =====================================================================
   博万赛场 · 全站共享样式 /assets/site.css
   场芯黑基底 · 面板墨模块 · 荧光绿主强调 · 电光橙次强调
   ===================================================================== */

/* ---------- 01 Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, figcaption, blockquote, dl, dt, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 02 设计令牌 ---------- */
:root {
  --c-pitch: #0B0F14;
  --c-panel: #131C24;
  --c-panel-2: #101820;
  --c-steel: #243441;
  --c-lime: #C6FF3D;
  --c-orange: #FF6A1F;
  --c-white: #F3F6F8;
  --c-dim: #B8C6D1;
  --c-muted: #93A2AE;
  --c-cyan: #2FD6C4;
  --c-amber: #FFC44D;
  --c-blue: #4C8DFF;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;

  --strip-h: 36px;
  --nav-h: 68px;
  --header-h: calc(var(--strip-h) + var(--nav-h));

  --shell-max: 1480px;
  --gutter: clamp(16px, 3.2vw, 44px);

  --hard-shadow: 8px 8px 0 rgba(0, 0, 0, 0.55);
  --hard-shadow-sm: 4px 4px 0 rgba(0, 0, 0, 0.5);
  --cut: 18px;
}

/* ---------- 03 基底与场地图纸底纹 ---------- */
body {
  padding-top: var(--header-h);
  background-color: var(--c-pitch);
  color: var(--c-white);
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(36, 52, 65, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36, 52, 65, 0.6) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.26;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(720px 440px at 10% -8%, rgba(198, 255, 61, 0.10), transparent 68%),
    radial-gradient(600px 420px at 94% 2%, rgba(255, 106, 31, 0.09), transparent 70%);
}

main { position: relative; z-index: 1; display: block; }

/* ---------- 04 排版 ---------- */
h1, h2, h3, h4, h5, h6 { line-height: 1.12; font-weight: 800; color: var(--c-white); }
strong, b { font-weight: 700; color: var(--c-white); }
p { text-wrap: pretty; }

.display {
  font-size: clamp(48px, 7vw, 128px);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--c-white);
}

.num, .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

.text-lime { color: var(--c-lime); }
.text-orange { color: var(--c-orange); }
.text-cyan { color: var(--c-cyan); }
.text-muted { color: var(--c-muted); }

.idx-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.idx-label::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--c-lime);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 05 布局容器 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 06 跳转链接与焦点 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: -9999px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--c-lime);
  color: var(--c-pitch);
  font-size: 14px;
  font-weight: 700;
  border: 2px solid var(--c-pitch);
  box-shadow: var(--hard-shadow-sm);
}
.skip-link:focus { left: 14px; }

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

/* ---------- 07 页头 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  background: transparent;
  transition: background-color 220ms ease, box-shadow 220ms ease, backdrop-filter 220ms ease;
}
.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(36, 52, 65, 0.95) 16%, rgba(36, 52, 65, 0.95) 84%, transparent);
  transition: opacity 220ms ease;
}
.site-header.is-solid {
  background: rgba(11, 15, 20, 0.94);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 22px 50px -32px rgba(0, 0, 0, 1);
}
.site-header.is-solid::after { opacity: 0; }

.status-strip {
  height: var(--strip-h);
  background: rgba(19, 28, 36, 0.72);
  border-bottom: 1px solid rgba(36, 52, 65, 0.85);
  transition: background-color 220ms ease;
}
.site-header.is-solid .status-strip { background: rgba(16, 24, 32, 0.9); }

.status-strip__inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.4vw, 34px);
  overflow: hidden;
}

.strip-item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-muted);
  white-space: nowrap;
}
.strip-item__val {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-lime);
  font-variant-numeric: tabular-nums;
}
.strip-dot {
  align-self: center;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-cyan);
  animation: strip-pulse 2.4s ease-out infinite;
}
@keyframes strip-pulse {
  0% { box-shadow: 0 0 0 0 rgba(47, 214, 196, 0.5); }
  70% { box-shadow: 0 0 0 9px rgba(47, 214, 196, 0); }
  100% { box-shadow: 0 0 0 0 rgba(47, 214, 196, 0); }
}
.strip-link {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-orange);
  white-space: nowrap;
  transition: color 160ms ease;
}
.strip-link:hover { color: var(--c-lime); }

.nav-shell {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: height 220ms ease;
}
.site-header.is-solid .nav-shell { height: 58px; }

.nav-shell__inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.8vw, 26px);
  width: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}
.brand__mark {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 38px;
  background: var(--c-lime);
  color: var(--c-pitch);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 74% 100%, 0 100%);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--c-white);
}
.brand__tag {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--c-muted);
}

.primary-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(2px, 1.4vw, 20px);
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 10px 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-dim);
  transition: color 160ms ease;
}
.nav-link__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--c-steel);
  transition: color 160ms ease;
}
.nav-link:hover { color: var(--c-lime); }
.nav-link:hover .nav-link__idx { color: var(--c-orange); }
.nav-link[aria-current="page"] { color: var(--c-lime); }
.nav-link[aria-current="page"] .nav-link__idx { color: var(--c-orange); }
.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  bottom: 2px;
  height: 2px;
  background: var(--c-lime);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  margin-left: auto;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 46px;
  height: 42px;
  border: 2px solid var(--c-steel);
  background: var(--c-panel);
  transition: border-color 180ms ease, background-color 180ms ease;
}
.nav-toggle:hover { border-color: var(--c-lime); }
.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-white);
  transition: transform 200ms ease, opacity 200ms ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(6px) 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(-6px) rotate(-45deg); }

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--c-lime);
  transform: scaleX(0);
  transform-origin: 0 50%;
  opacity: 0;
  transition: opacity 220ms ease;
}
.site-header.is-solid .scroll-progress { opacity: 0.92; }

/* ---------- 08 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  background: var(--c-panel-2);
  border-top: 2px solid var(--c-steel);
}

.footer-scope {
  background: #0D141A;
  border-bottom: 2px solid var(--c-steel);
}
.footer-scope__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 26px;
  padding-block: 15px;
}
.footer-scope__label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--c-pitch);
  background: var(--c-cyan);
  padding: 3px 9px;
}
.footer-scope__text {
  font-size: 14px;
  color: var(--c-dim);
}
.footer-scope__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-muted);
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(230px, 1fr) 2.6fr;
  gap: clamp(28px, 4vw, 68px);
  padding-block: clamp(38px, 5vw, 72px);
}

.footer-brand__mark {
  display: inline-block;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--c-white);
  border-bottom: 3px solid var(--c-lime);
  padding-bottom: 6px;
  transition: color 160ms ease;
}
.footer-brand__mark:hover { color: var(--c-lime); }
.footer-brand__desc {
  margin-top: 18px;
  max-width: 34ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-muted);
}
.footer-brand__note {
  margin-top: 14px;
  padding-left: 12px;
  border-left: 3px solid var(--c-orange);
  font-size: 13.5px;
  color: var(--c-dim);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 30px 22px;
}
.footer-col__title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-steel);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--c-lime);
}
.footer-col__list li + li { margin-top: 1px; }
.footer-link {
  display: inline-block;
  padding: 5px 0;
  font-size: 14.5px;
  color: var(--c-dim);
  transition: color 160ms ease, transform 160ms ease;
}
.footer-link:hover { color: var(--c-lime); transform: translateX(3px); }

.footer-legal {
  border-top: 2px solid var(--c-steel);
  background: #090D11;
}
.footer-legal__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 28px;
  padding-block: 20px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--c-muted);
}
.footer-legal__id { color: var(--c-dim); }
.footer-legal__contact { color: var(--c-muted); }

/* ---------- 09 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 22px;
  border: 2px solid var(--c-steel);
  background: transparent;
  color: var(--c-white);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: transform 160ms ease, background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}
.btn:hover { transform: translate(-2px, -2px); }
.btn:active { transform: translate(0, 0); }

.btn--lime {
  background: var(--c-lime);
  border-color: var(--c-lime);
  color: var(--c-pitch);
  box-shadow: 6px 6px 0 rgba(198, 255, 61, 0.16);
}
.btn--lime:hover { box-shadow: 8px 8px 0 rgba(198, 255, 61, 0.24); }

.btn--ghost { color: var(--c-dim); }
.btn--ghost:hover { border-color: var(--c-lime); color: var(--c-lime); }

.btn--sm { min-height: 38px; padding: 0 15px; font-size: 14px; }
.btn--block { width: 100%; }

/* ---------- 10 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-muted);
}
.breadcrumb a { transition: color 160ms ease; }
.breadcrumb a:hover { color: var(--c-lime); }
.breadcrumb__sep { color: var(--c-steel); }

/* ---------- 11 章节标题与编号规则线 ---------- */
.section-head { margin-bottom: clamp(22px, 3vw, 42px); }
.section-head__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--c-orange);
  margin-bottom: 10px;
}
.section-head__title {
  padding-left: 14px;
  border-left: 4px solid var(--c-lime);
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 800;
  line-height: 1.15;
  color: var(--c-white);
}
.section-head__desc {
  margin-top: 14px;
  padding-left: 18px;
  max-width: 62ch;
  font-size: 16px;
  color: var(--c-muted);
}

.section-rule {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-block: clamp(40px, 6vw, 88px);
}
.section-rule::after {
  content: "";
  flex: 1 1 auto;
  height: 2px;
  background: linear-gradient(90deg, var(--c-steel), rgba(36, 52, 65, 0));
}
.section-rule__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--c-muted);
  border: 2px solid var(--c-steel);
  padding: 5px 11px;
}

/* ---------- 12 正文列 ---------- */
.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--c-white);
}
.prose > * + * { margin-top: 1em; }
.prose h2 { font-size: clamp(24px, 2.6vw, 32px); margin-top: 1.8em; }
.prose h3 { font-size: 20px; margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.2em; }
.prose ul { list-style: square; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.35em; }
.prose a { color: var(--c-blue); border-bottom: 1px solid rgba(76, 141, 255, 0.45); }
.prose a:hover { color: var(--c-lime); border-bottom-color: var(--c-lime); }
.prose blockquote {
  border-left: 4px solid var(--c-orange);
  padding-left: 16px;
  color: var(--c-muted);
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  color: var(--c-lime);
  background: rgba(36, 52, 65, 0.6);
  padding: 2px 6px;
}

/* ---------- 13 网格 ---------- */
.grid { display: grid; gap: clamp(16px, 2vw, 28px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 14 数据面板 / 指标 / 标签页 / 图片容器 ---------- */
.panel {
  position: relative;
  background: var(--c-panel);
  border: 2px solid var(--c-steel);
  box-shadow: var(--hard-shadow);
  padding: clamp(18px, 2.4vw, 32px);
}
.panel--flush { padding: 0; }

.stat {
  border: 2px solid var(--c-steel);
  background: var(--c-panel);
  padding: 18px 20px;
  box-shadow: var(--hard-shadow-sm);
}
.stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(32px, 4vw, 58px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-lime);
  letter-spacing: -0.01em;
}
.stat__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-muted);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 2px solid var(--c-steel);
  background: transparent;
  color: var(--c-dim);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  transition: border-color 160ms ease, color 160ms ease, background-color 160ms ease;
}
.chip:hover { border-color: var(--c-lime); color: var(--c-lime); }
.chip[aria-pressed="true"] {
  border-color: var(--c-lime);
  color: var(--c-pitch);
  background: var(--c-lime);
}

.tabs__list {
  display: flex;
  align-items: stretch;
  gap: 0;
  border-bottom: 2px solid var(--c-steel);
  overflow-x: auto;
  scrollbar-width: thin;
}
.tabs__tab {
  padding: 12px 18px;
  border-bottom: 3px solid transparent;
  background: transparent;
  color: var(--c-muted);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  white-space: nowrap;
  transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}
.tabs__tab:hover { color: var(--c-lime); }
.tabs__tab[aria-selected="true"] {
  background: var(--c-lime);
  border-bottom-color: var(--c-lime);
  color: var(--c-pitch);
}
.tabs__panel { padding-top: 24px; }
.tabs__panel[hidden] { display: none; }

.media-frame {
  position: relative;
  overflow: hidden;
  border: 2px solid var(--c-steel);
  background: linear-gradient(135deg, #0E1620 0%, #1B2A36 100%);
  aspect-ratio: 16 / 9;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(90deg, rgba(198, 255, 61, 0.10) 1px, transparent 1px);
  background-size: 46px 100%;
  opacity: 0.5;
}
.media-frame__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  padding: 8px 14px;
  background: rgba(11, 15, 20, 0.88);
  border-top: 2px solid var(--c-lime);
  color: var(--c-dim);
  font-size: 13px;
  letter-spacing: 0.04em;
}

/* ---------- 15 入场动效 ---------- */
.reveal.reveal--armed {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 420ms ease-out var(--reveal-delay, 0ms), transform 420ms ease-out var(--reveal-delay, 0ms);
}
.reveal.reveal--armed.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 16 响应式 ---------- */
@media (max-width: 1080px) {
  .nav-toggle { display: flex; }
  .nav-actions .btn--ghost { display: none; }
  .brand { flex: 1 1 auto; }
  .brand__tag { display: none; }

  .primary-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    width: min(360px, 88vw);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    margin-inline: 0;
    padding: 18px var(--gutter) 48px;
    background: var(--c-panel);
    border-left: 2px solid var(--c-steel);
    box-shadow: -18px 0 60px rgba(0, 0, 0, 0.65);
    overflow-y: auto;
    visibility: hidden;
    transform: translateX(102%);
    transition: transform 260ms ease, visibility 260ms ease;
  }
  .primary-nav[data-open="true"] {
    visibility: visible;
    transform: translateX(0);
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }
  .nav-list__item { border-bottom: 1px solid var(--c-steel); }
  .nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 16px 2px;
    font-size: 17px;
    color: var(--c-white);
  }
  .nav-link__idx { order: 2; font-size: 12px; }
  .nav-link[aria-current="page"] { color: var(--c-lime); }
  .nav-link[aria-current="page"]::after { display: none; }

  .footer-main { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-scope__meta { margin-left: 0; }
}

@media (max-width: 860px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-cols { gap: 26px 18px; }
  .footer-scope__inner { gap: 8px 16px; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-legal__inner { flex-direction: column; }
  .status-strip__inner .strip-item:nth-child(3) { display: none; }
  .panel, .stat { box-shadow: var(--hard-shadow-sm); }
  .brand__mark { width: 38px; height: 34px; font-size: 13px; }
  .brand__name { font-size: 17px; }
}

@media (max-width: 420px) {
  .footer-cols { grid-template-columns: minmax(0, 1fr); }
  .footer-scope__text { display: none; }
  .nav-actions .btn--lime { display: none; }
}

/* ---------- 17 动效降级 ---------- */
@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;
  }
  .reveal.reveal--armed { opacity: 1; transform: none; }
  .strip-dot { box-shadow: none; }
  .btn:hover { transform: none; }
  .footer-link:hover { transform: none; }
}