/* ============================================================
   亚博竞界 · SITE.CSS
   全站共享样式系统
   数据叙事 / 墨蓝基底 / 霓虹绿高亮 / 铜色点缀
   ============================================================ */

:root {
  --ink-deep: #0A1F44;
  --ink-base: #112B5C;
  --ink-panel: #0E2548;
  --neon-green: #39FF14;
  --copper: #B87333;
  --text-primary: #E8F0FE;
  --text-secondary: #9BB1D6;
  --border-grid: #1E3A66;
  --highlight-gradient: linear-gradient(90deg, #39FF14, #B87333);

  --font-headline: 'DIN Condensed', 'Impact', 'Noto Sans SC Black', sans-serif;
  --font-data: 'Courier', 'Roboto Mono', monospace;
  --font-body: 'Noto Sans SC', 'PingFang SC', sans-serif;

  --gutter: clamp(16px, 4vw, 48px);
  --container: 1280px;
  --ease: cubic-bezier(.4, 0, .2, 1);
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--ink-deep);
  background-image:
    linear-gradient(rgba(30, 58, 102, .16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 102, .16) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-font-smoothing: antialiased;
}

@media (min-width: 900px) {
  body {
    background-attachment: fixed;
  }
}

h1, h2, h3, h4, p, figure, ul, ol, dl, dd {
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4 {
  font-family: var(--font-headline);
  font-weight: 900;
  line-height: 1.15;
  color: var(--text-primary);
}

h1 { font-size: clamp(36px, 6vw, 68px); margin-bottom: .4em; }
h2 { font-size: clamp(26px, 3.6vw, 42px); margin-bottom: .5em; }
h3 { font-size: clamp(18px, 2vw, 24px); margin-bottom: .5em; }

p { line-height: 1.8; }

a {
  color: var(--neon-green);
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

img {
  max-width: 100%;
  display: block;
}

button {
  font-family: inherit;
  font-size: inherit;
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
}

::selection {
  background: var(--neon-green);
  color: #062A0A;
}

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--ink-deep); }
::-webkit-scrollbar-thumb {
  background: var(--border-grid);
  border: 3px solid var(--ink-deep);
  border-radius: 8px;
}
::-webkit-scrollbar-thumb:hover { background: var(--copper); }

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

#main-content {
  flex: 1;
  scroll-margin-top: 112px;
}

.site-container {
  width: min(var(--container), calc(100% - 2 * var(--gutter)));
  margin-inline: auto;
  position: relative;
}

.main-content {
  width: 100%;
  padding: 40px 0 96px;
}

/* ============ 文字辅助 ============ */

.text-note {
  font-size: 12px;
  font-family: var(--font-data);
  color: var(--text-secondary);
  letter-spacing: .12em;
}

.text-caption-wide {
  font-size: 11px;
  font-family: var(--font-data);
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--copper);
}

.vertical-note {
  writing-mode: vertical-rl;
  font-size: 11px;
  font-family: var(--font-data);
  letter-spacing: .28em;
  color: var(--text-secondary);
  border-right: 1px solid var(--border-grid);
  padding-right: 10px;
}

/* ============ 栅格 ============ */

.grid { display: grid; gap: 24px; }
.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)); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

@media (max-width: 880px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: minmax(0, 1fr); }
}

/* ============ 按钮 ============ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 22px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--text-primary);
  background: var(--ink-panel);
  border: 1px solid var(--border-grid);
  text-decoration: none;
  cursor: pointer;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}

.btn:hover {
  border-color: var(--neon-green);
  color: var(--neon-green);
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--neon-green);
  border-color: var(--neon-green);
  color: #062A0A;
  box-shadow: 0 0 18px rgba(57, 255, 20, .25);
}

.btn-primary:hover {
  background: transparent;
  color: var(--neon-green);
  box-shadow: 0 0 24px rgba(57, 255, 20, .35);
}

.btn-ghost {
  background: transparent;
  border-color: var(--copper);
  color: var(--copper);
}

.btn-ghost:hover {
  background: var(--copper);
  color: var(--ink-deep);
  border-color: var(--copper);
}

/* ============ 面包屑 ============ */

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-secondary);
}

.breadcrumbs li { display: inline-flex; align-items: center; }
.breadcrumbs li + li::before {
  content: "/";
  margin: 0 10px;
  color: var(--border-grid);
}
.breadcrumbs a { color: var(--text-secondary); text-decoration: none; transition: color .2s; }
.breadcrumbs a:hover { color: var(--neon-green); }
.breadcrumbs li[aria-current="page"] { color: var(--text-primary); font-weight: 700; }

/* ============ 章节头 ============ */

.section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin-bottom: clamp(28px, 5vw, 48px);
}

.section-code {
  display: inline-block;
  width: max-content;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .28em;
  color: var(--copper);
  text-transform: uppercase;
}

.section-title { margin-top: 4px; }

.section-desc {
  max-width: 62ch;
  margin-top: 10px;
  color: var(--text-secondary);
  font-size: 15px;
}

/* ============ 面板与数据卡片 ============ */

.panel {
  position: relative;
  background: rgba(14, 37, 72, .55);
  border: 1px solid var(--border-grid);
}

.panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 30px;
  height: 30px;
  border-top: 2px solid var(--neon-green);
  border-left: 2px solid var(--neon-green);
}

.panel-title {
  padding: 20px 22px 4px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--text-primary);
}

.panel-body {
  padding: 12px 22px 22px;
  color: var(--text-secondary);
}

.data-card {
  position: relative;
  padding: 26px 24px 22px;
  background: var(--ink-panel);
  border: 1px solid var(--border-grid);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.data-card:hover {
  border-color: var(--neon-green);
  transform: translateY(-4px);
}

.data-card::before {
  content: attr(data-index);
  position: absolute;
  top: 0;
  left: -1px;
  padding: 3px 8px;
  background: var(--copper);
  color: var(--ink-deep);
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
}

.data-card-label {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--text-secondary);
}

.data-card-value {
  margin: 8px 0 6px;
  font-family: var(--font-data);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--neon-green);
}

.data-card-note {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--text-secondary);
}

/* ============ 标签 ============ */

.label-tag {
  display: inline-block;
  padding: 4px 10px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--text-secondary);
  border: 1px solid var(--border-grid);
  background: rgba(10, 31, 68, .5);
}

.label-tag--green {
  color: var(--neon-green);
  border-color: rgba(57, 255, 20, .5);
}

.label-tag--copper {
  color: var(--copper);
  border-color: rgba(184, 115, 51, .45);
}

/* ============ 图片占位框架 ============ */

.image-frame {
  position: relative;
  overflow: hidden;
  background-color: var(--ink-panel);
  background-image:
    linear-gradient(rgba(30, 58, 102, .35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 102, .35) 1px, transparent 1px);
  background-size: 24px 24px;
  border: 1px solid var(--border-grid);
}

.image-frame::after {
  content: attr(data-caption);
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 36px 14px 10px;
  background: linear-gradient(transparent, rgba(10, 31, 68, .92));
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--text-secondary);
}

.image-frame img {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-frame--16x9 { aspect-ratio: 16 / 9; }
.image-frame--4x3 { aspect-ratio: 4 / 3; }
.image-frame--1x1 { aspect-ratio: 1 / 1; }
.image-frame--3x4 { aspect-ratio: 3 / 4; }

/* ============ 框景与刻度 ============ */

.hero-frame {
  position: relative;
  padding: clamp(28px, 5vw, 64px);
  border: 1px solid var(--border-grid);
  background:
    linear-gradient(120deg, rgba(14, 37, 72, .92), rgba(10, 31, 68, .78)),
    repeating-linear-gradient(90deg, rgba(57, 255, 20, .07) 0 1px, transparent 1px 32px);
  overflow: hidden;
}

.hero-frame::before,
.hero-frame::after {
  content: "";
  position: absolute;
  width: 46px;
  height: 46px;
  border: 2px solid var(--neon-green);
  pointer-events: none;
}

.hero-frame::before {
  top: -1px;
  left: -1px;
  border-width: 2px 0 0 2px;
}

.hero-frame::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 2px 2px 0;
}

.tick-strip {
  height: 14px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-grid);
  background-image: repeating-linear-gradient(90deg, var(--border-grid) 0 1px, transparent 1px 16px);
}

/* ============ 跳转链接 ============ */

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 5000;
  padding: 10px 18px;
  background: var(--neon-green);
  color: #062A0A;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 2px;
  transform: translateY(-180%);
  transition: transform .2s ease;
}

.skip-link:focus-visible { transform: translateY(0); }

/* ============ 页头 ============ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 31, 68, .88);
  border-bottom: 1px solid var(--neon-green);
  box-shadow: 0 4px 24px rgba(2, 8, 20, .4);
}

.header-status-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 30px;
  padding: 0 var(--gutter);
  background: rgba(4, 10, 24, .72);
  border-bottom: 1px solid var(--border-grid);
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--text-secondary);
  white-space: nowrap;
}

.header-status-cell {
  flex: none;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-status-cell--copper {
  color: var(--copper);
  margin-left: auto;
}

.header-status-feed {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-inline: auto;
  font-weight: 700;
  color: var(--neon-green);
}

.status-dot {
  width: 6px;
  height: 6px;
  flex: none;
  border-radius: 50%;
  background: var(--neon-green);
  box-shadow: 0 0 8px rgba(57, 255, 20, .5);
  animation: status-pulse 2s ease-in-out infinite;
}

.header-main {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 72px;
  padding: 0 var(--gutter);
}

/* ============ 品牌 ============ */

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  flex: none;
  text-decoration: none;
}

.brand-mark {
  font-family: var(--font-headline);
  font-size: 26px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: .06em;
  color: var(--text-primary);
}

.brand-mark-cn {
  font-family: var(--font-data);
  font-size: .5em;
  font-weight: 700;
  vertical-align: .45em;
  margin-left: .24em;
  letter-spacing: .14em;
  color: var(--neon-green);
}

.brand-tag {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: .2em;
  color: var(--text-secondary);
  border-left: 1px solid var(--border-grid);
  padding-left: 12px;
  text-transform: uppercase;
}

/* ============ 刻度线 / 滚动进度 ============ */

.header-rule {
  position: relative;
  flex: 1 1 auto;
  min-width: 32px;
  max-width: 180px;
  height: 1px;
  margin: 6px 20px 0;
  background: var(--border-grid);
}

.header-rule::before,
.header-rule::after {
  content: "";
  position: absolute;
  top: -3px;
  width: 7px;
  height: 7px;
  background: var(--copper);
  z-index: 1;
}

.header-rule::before { left: 0; }
.header-rule::after { right: 0; }

.header-rule-track {
  position: absolute;
  top: 0;
  left: 0;
  height: 1px;
  width: 0;
  background: var(--neon-green);
}

.header-rule-index {
  position: absolute;
  top: -17px;
  right: -8px;
  padding: 0 3px;
  background: var(--ink-deep);
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: .08em;
  color: var(--neon-green);
}

/* ============ 导航 ============ */

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  visibility: visible;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 10px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 2px;
  height: 2px;
  background: var(--neon-green);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform .25s var(--ease);
}

.nav-link:hover,
.nav-link[aria-current="page"] { color: var(--text-primary); }

.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left center;
}

.nav-label {
  display: none;
  margin: 0 0 10px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .32em;
  color: var(--copper);
  text-transform: uppercase;
}

.nav-footer-code {
  display: none;
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid var(--border-grid);
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: .26em;
  color: var(--text-secondary);
}

/* ============ 状态灯 ============ */

.status-node {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--border-grid);
  background: rgba(14, 37, 72, .6);
}

.status-node-light {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--neon-green);
  box-shadow: 0 0 8px rgba(57, 255, 20, .6);
  animation: status-pulse 2s ease-in-out infinite;
}

.status-node-code {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--text-secondary);
}

/* ============ 移动导航按钮与遮罩 ============ */

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  flex: none;
  min-height: 40px;
  padding: 6px 10px;
  border: 1px solid var(--border-grid);
  background: rgba(14, 37, 72, .5);
  color: var(--text-secondary);
  transition: border-color .2s, color .2s;
}

.nav-toggle:hover { border-color: var(--neon-green); }

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

.nav-toggle-bars {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
}

.nav-toggle-text {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: .2em;
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1450;
  background: rgba(2, 8, 20, .66);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease;
}

.nav-backdrop[data-open] {
  opacity: 1;
  pointer-events: auto;
}

/* ============ 移动端断点 ============ */

@media (max-width: 880px) {
  .header-status-cell { display: none; }
  .header-status-feed { margin-inline: 0; }
  .header-rule { display: none; }
  .status-node { display: none; }
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 1500;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 80vw;
    max-width: 340px;
    margin: 0;
    padding: 76px 28px 24px;
    background: var(--ink-deep);
    border-left: 1px solid var(--neon-green);
    transform: translateX(103%);
    transition: transform .34s var(--ease), visibility .34s;
    visibility: hidden;
    box-shadow: 0 0 60px rgba(2, 8, 20, .6);
  }

  .site-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
  }

  .nav-label { display: block; }
  .nav-footer-code { display: block; }

  .nav-link {
    display: block;
    padding: 14px 6px;
    font-size: 17px;
    letter-spacing: .14em;
    border-bottom: 1px solid var(--border-grid);
    color: var(--text-primary);
  }

  .nav-link::after { display: none; }

  .nav-link[aria-current="page"] {
    color: var(--neon-green);
    padding-left: 12px;
  }
}

/* ============ 页脚 ============ */

.site-footer {
  position: relative;
  overflow: hidden;
  background: var(--ink-deep);
  border-top: 1px solid var(--copper);
}

.footer-grid-texture {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(30, 58, 102, .5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 102, .5) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.footer-masthead,
.footer-links-grid,
.footer-legal {
  position: relative;
  z-index: 1;
}

.footer-masthead {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  align-items: end;
  gap: clamp(32px, 6vw, 88px);
  padding: 48px var(--gutter) 36px;
  border-bottom: 1px solid var(--border-grid);
}

.footer-brand-mark {
  font-family: var(--font-headline);
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: .06em;
  color: var(--text-primary);
}

.footer-brand-code {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--copper);
}

.footer-statement-text {
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-secondary);
  border-left: 2px solid var(--neon-green);
  padding-left: 18px;
}

.footer-links-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 28px;
  padding: 36px var(--gutter) 40px;
  border-bottom: 1px solid var(--border-grid);
}

.footer-links-col { grid-column: span 2; }
.footer-stat-col { grid-column: span 4; }
.footer-contact-col { grid-column: span 4; }

.footer-col-title {
  font-size: 16px;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-grid);
}

.footer-col-title::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  background: var(--copper);
  vertical-align: middle;
}

.footer-link {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color .18s, padding-left .18s;
}

.footer-link:hover {
  color: var(--neon-green);
  padding-left: 6px;
}

.footer-stat {
  border: 1px solid var(--border-grid);
  padding: 16px;
  background: rgba(14, 37, 72, .5);
}

.footer-stat-label {
  display: block;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--text-secondary);
}

.footer-stat-value {
  margin: 8px 0;
  font-family: var(--font-data);
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  color: var(--neon-green);
}

.footer-stat-bar {
  height: 4px;
  margin: 0 0 12px;
  background: var(--border-grid);
}

.footer-stat-bar-fill {
  display: block;
  width: 62%;
  height: 100%;
  background: var(--highlight-gradient);
}

.footer-stat-hint {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--text-secondary);
}

.footer-contact-line {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.footer-contact-note {
  margin-top: 10px;
  font-size: 12px;
  font-family: var(--font-data);
  letter-spacing: .1em;
  color: var(--copper);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
  padding: 18px var(--gutter);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-secondary);
}

.footer-legal-copy {
  font-weight: 700;
  color: var(--text-primary);
}

.footer-legal-rule {
  flex: 1 1 80px;
  max-width: 320px;
  height: 1px;
  background: var(--border-grid);
}

.footer-legal-tag {
  margin-left: auto;
  letter-spacing: .2em;
  color: var(--copper);
}

@media (max-width: 880px) and (min-width: 561px) {
  .footer-links-grid { grid-template-columns: repeat(6, 1fr); }
  .footer-links-col,
  .footer-stat-col { grid-column: span 2; }
  .footer-contact-col { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .footer-masthead {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 28px;
  }

  .footer-links-grid { grid-template-columns: 1fr 1fr; }
  .footer-links-col { grid-column: auto; }
  .footer-stat-col { grid-column: 1 / -1; }
  .footer-contact-col { grid-column: 1 / -1; }

  .footer-legal { flex-direction: column; align-items: flex-start; }
  .footer-legal-rule { width: 100%; max-width: 100%; }
  .footer-legal-tag { margin-left: 0; }
}

/* ============ 滚动显现 ============ */

html.reveal-ready .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

html.reveal-ready .reveal[data-visible] {
  opacity: 1;
  transform: none;
}

/* ============ 动效与降级 ============ */

@keyframes status-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.82); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  html.reveal-ready .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .status-node-light,
  .status-dot { animation: none; }
}