/* =========================================================
   三亿体育站 · 共享样式 /assets/site.css
   夜间赛场 × 数据看板
   ========================================================= */

/* ---------- 1. 重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 92px;
  background: #070D18;
}

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

ul, ol { margin: 0; padding: 0; }
ul[class], ol[class] { list-style: none; }

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

button, input, select, textarea { font: inherit; color: inherit; }

a { color: inherit; text-decoration: none; }

main { display: block; }

:focus-visible {
  outline: 2px solid #7DF9FF;
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 2. 设计变量 ---------- */
:root {
  /* 色彩系统 */
  --ink-900: #070D18;
  --ink-800: #0F1A2E;
  --ink-700: #16243D;
  --paper: #F2E9D8;
  --steel: #A9B8CC;
  --cyan: #2EF2D0;
  --orange: #FF6A2B;
  --silver: #C7D0DA;
  --gold: #F5C86B;
  --green: #47D18C;
  --red: #FF5A6E;
  --focus: #7DF9FF;

  /* 线面 */
  --line: rgba(199, 208, 218, 0.13);
  --line-strong: rgba(199, 208, 218, 0.26);
  --line-cyan: rgba(46, 242, 208, 0.45);

  /* 尺寸 */
  --rail-w: 252px;
  --header-h: 68px;
  --radius-lg: 26px;
  --radius-md: 16px;
  --radius-pill: 999px;
  --content-max: 1180px;

  /* 字体 */
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Courier New", "Noto Sans SC", monospace;

  /* 动效 */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 240ms;
}

/* ---------- 3. 基础排版 ---------- */
html, body { min-height: 100%; }

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(880px 520px at 88% -10%, rgba(46, 242, 208, 0.10), transparent 68%),
    radial-gradient(760px 460px at -12% 104%, rgba(255, 106, 43, 0.10), transparent 70%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--paper);
}

h1 { font-size: clamp(2.8rem, 6vw, 5.4rem); }
h2 { font-size: clamp(1.8rem, 3vw, 2.8rem); }
h3 { font-size: clamp(1.25rem, 1.6vw, 1.5rem); font-weight: 800; }

p { color: inherit; }

::selection {
  background: var(--cyan);
  color: #04211C;
}

/* ---------- 4. 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 0.7rem 1.15rem;
  border-radius: var(--radius-pill);
  background: var(--cyan);
  color: #04211C;
  font-weight: 800;
  font-size: 0.92rem;
  box-shadow: 0 14px 32px -14px rgba(46, 242, 208, 0.95);
  transform: translateY(-180%);
  transition: transform var(--dur) var(--ease);
}

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

/* ---------- 5. 容器与区块 ---------- */
.container {
  width: min(100% - 2.5rem, var(--content-max));
  margin-inline: auto;
}

@media (min-width: 1440px) {
  .container { width: min(100% - 5rem, 1280px); }
}

.section { padding-block: clamp(3rem, 7vw, 6.5rem); }
.section--tight { padding-block: clamp(2rem, 4vw, 3.4rem); }

#main-content { scroll-margin-top: 92px; }

.stack > * + * { margin-top: var(--gap, 1rem); }

.divider {
  height: 1px;
  border: 0;
  margin: clamp(1.6rem, 3vw, 2.6rem) 0;
  background: linear-gradient(90deg, rgba(46, 242, 208, 0.65), rgba(199, 208, 218, 0.12) 46%, transparent);
}

/* ---------- 6. 文本组件 ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.section-head { display: grid; gap: 0.65rem; max-width: 64ch; }
.section-title { font-size: clamp(1.8rem, 3vw, 2.8rem); }

.section-lede,
.lede {
  font-size: 1.04rem;
  line-height: 1.8;
  color: var(--steel);
  max-width: 68ch;
}

.data-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--cyan);
  text-shadow: 0 0 18px rgba(46, 242, 208, 0.42);
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 7. 表面组件 ---------- */
.panel {
  position: relative;
  background: linear-gradient(160deg, rgba(22, 36, 61, 0.92), rgba(15, 26, 46, 0.95));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.1rem, 2.4vw, 1.75rem);
}

.card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(158deg, #16243D 0%, #0F1A2E 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.1rem, 2.4vw, 1.65rem);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.card::after {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 72px; height: 72px;
  background: linear-gradient(135deg, rgba(46, 242, 208, 0.22), transparent 72%);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  pointer-events: none;
}

.card:hover,
.card:focus-within {
  border-color: var(--line-cyan);
  transform: translateY(-3px);
  box-shadow: 0 22px 46px -30px rgba(46, 242, 208, 0.75);
}

.card-title {
  font-size: 1.14rem;
  font-weight: 800;
  color: var(--paper);
  letter-spacing: 0.01em;
}

.card-body {
  margin-top: 0.6rem;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--steel);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.72rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--silver);
  background: rgba(15, 26, 46, 0.75);
  border: 1px solid var(--line-strong);
}

.chip--cyan {
  color: var(--cyan);
  background: rgba(46, 242, 208, 0.08);
  border-color: var(--line-cyan);
}

.chip--orange {
  color: var(--orange);
  background: rgba(255, 106, 43, 0.09);
  border-color: rgba(255, 106, 43, 0.45);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.78rem;
  border-radius: var(--radius-pill);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #2A1B02;
  background: linear-gradient(120deg, var(--gold), #FFE4AC);
  box-shadow: 0 0 22px -8px rgba(245, 200, 107, 0.9);
}

/* ---------- 8. 网格 ---------- */
.grid { display: grid; gap: clamp(1rem, 2.2vw, 1.6rem); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 190px), 1fr)); }

/* ---------- 9. 媒体容器 ---------- */
.media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(140deg, #16243D, #0B1424);
}

.media > img,
.media > svg,
.media > picture > img,
.media > video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media--wide { aspect-ratio: 21 / 9; }
.media--square { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }

.media--cut {
  border-radius: 0;
  clip-path: polygon(0 0, 100% 0, 100% 84%, 86% 100%, 0 100%);
}

.media-placeholder {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: rgba(169, 184, 204, 0.55);
  background: repeating-linear-gradient(
    135deg,
    rgba(22, 36, 61, 0.92) 0 14px,
    rgba(15, 26, 46, 0.92) 14px 28px
  );
}

.media-caption {
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: rgba(169, 184, 204, 0.82);
}

/* ---------- 10. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  min-height: 44px;
  padding: 0.6rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: 0.94rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease),
              background-color 180ms var(--ease), color 180ms var(--ease),
              border-color 180ms var(--ease);
}

.btn-primary {
  background: var(--orange);
  color: #1A0A03;
  box-shadow: 0 8px 24px -14px rgba(255, 106, 43, 0.9);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px -14px rgba(255, 106, 43, 0.95);
}

.btn-ghost {
  background: rgba(22, 36, 61, 0.65);
  border-color: var(--line-strong);
  color: var(--paper);
}

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

.btn-block { width: 100%; }

/* ---------- 11. 面包屑 ---------- */
.breadcrumbs {
  margin-bottom: clamp(1rem, 2vw, 1.6rem);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: rgba(169, 184, 204, 0.85);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.breadcrumbs li { display: flex; align-items: center; gap: 0.5rem; }

.breadcrumbs li + li::before {
  content: "/";
  color: rgba(169, 184, 204, 0.38);
}

.breadcrumbs a { color: inherit; transition: color 180ms var(--ease); }
.breadcrumbs a:hover { color: var(--cyan); }
.breadcrumbs [aria-current="page"] { color: var(--paper); }

/* ---------- 12. 时间轴 ---------- */
.timeline {
  position: relative;
  padding-left: 1.5rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(255, 106, 43, 0.65));
}

.timeline-item {
  position: relative;
  padding-bottom: 1.6rem;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-marker {
  position: absolute;
  left: -1.5rem;
  top: 0.45rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 12px rgba(46, 242, 208, 0.72);
}

/* ---------- 13. 标签页 ---------- */
.tablist {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  padding: 0.3rem;
  border-radius: var(--radius-pill);
  background: rgba(15, 26, 46, 0.85);
  border: 1px solid var(--line-strong);
}

.tab {
  appearance: none;
  border: 0;
  padding: 0.55rem 1.05rem;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--steel);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
  transition: background-color 200ms var(--ease), color 200ms var(--ease);
}

.tab:hover { color: var(--paper); background: rgba(46, 242, 208, 0.1); }

.tab[aria-selected="true"] {
  background: var(--cyan);
  color: #04211C;
}

.tab-panel { margin-top: 1.3rem; }
.tab-panel[hidden] { display: none; }

/* ---------- 14. 显现动画 ---------- */
.reveal-pending {
  opacity: 0;
  transform: translateY(18px);
}

.reveal-pending.is-visible {
  opacity: 1;
  transform: none;
  transition: opacity 560ms var(--ease), transform 560ms var(--ease);
}

/* ---------- 15. 站点头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  background: linear-gradient(180deg, #0C1728 0%, #0A1322 100%);
  border-bottom: 1px solid var(--line);
  transition: border-color var(--dur) var(--ease);
}

.site-header[data-open] { border-bottom-color: var(--cyan); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
  min-height: var(--header-h);
  padding: 0 1rem;
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 0;
}

.brand-mark {
  flex: none;
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--cyan) 0%, var(--orange) 100%);
  clip-path: polygon(20% 0, 100% 0, 80% 100%, 0 100%);
  box-shadow: 0 0 22px -6px rgba(46, 242, 208, 0.85);
}

.brand-text { display: flex; flex-direction: column; min-width: 0; }

.brand-name {
  font-size: 1.02rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--paper);
  line-height: 1.25;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: rgba(169, 184, 204, 0.8);
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  flex: none;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: rgba(22, 36, 61, 0.7);
  color: var(--paper);
  font-size: 0.84rem;
  font-weight: 800;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.nav-toggle-icon {
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}

.nav-toggle-icon span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.site-header[data-open] .nav-toggle-icon span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.site-header[data-open] .nav-toggle-icon span:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle-icon span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 移动端抽屉 */
.site-nav {
  position: fixed;
  top: var(--header-h);
  right: 0;
  bottom: 0;
  left: auto;
  z-index: 55;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: min(86vw, 344px);
  padding: 1.4rem 1.15rem 2rem;
  overflow-y: auto;
  background: linear-gradient(180deg, #0D1929 0%, #070D18 100%);
  border-left: 1px solid var(--line-strong);
  box-shadow: -26px 0 60px -34px rgba(0, 0, 0, 0.95);
  transform: translateX(102%);
  visibility: hidden;
  transition: transform 280ms var(--ease), visibility 280ms var(--ease);
}

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

.nav-heading {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(169, 184, 204, 0.6);
  padding-left: 0.85rem;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  list-style: none;
}

.nav-link {
  display: grid;
  grid-template-columns: 2.2rem 1fr;
  align-items: center;
  gap: 0.35rem;
  padding: 0.68rem 0.85rem;
  border-radius: var(--radius-pill);
  color: var(--steel);
  font-size: 0.96rem;
  font-weight: 700;
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: rgba(169, 184, 204, 0.5);
  transition: color 180ms var(--ease);
}

.nav-link:hover {
  color: var(--paper);
  background: rgba(46, 242, 208, 0.09);
}

.nav-link:hover .nav-index { color: var(--cyan); }

.nav-link[aria-current="page"] {
  color: #04211C;
  background: linear-gradient(120deg, var(--cyan) 0%, #86F7E1 100%);
  box-shadow: 0 12px 30px -18px rgba(46, 242, 208, 0.95);
}

.nav-link[aria-current="page"] .nav-index { color: rgba(4, 33, 28, 0.62); }

.nav-foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 1.1rem;
  border-top: 1px dashed var(--line);
}

.nav-status {
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: rgba(169, 184, 204, 0.85);
}

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 0.5rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px 1px rgba(71, 209, 140, 0.9);
  animation: status-pulse 2.4s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* 滚动进度条（移动端：贴顶） */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 60;
  background: rgba(199, 208, 218, 0.1);
  pointer-events: none;
}

.scroll-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  box-shadow: 0 0 12px rgba(46, 242, 208, 0.7);
  transition: width 120ms linear;
}

body.nav-open { overflow: hidden; }

/* ---------- 16. 桌面端侧边轨道 ---------- */
@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }

  .site-header {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--rail-w);
    height: 100vh;
    overflow: hidden;
    background: linear-gradient(180deg, #0C1728 0%, #070D18 100%);
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }

  .site-header::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--cyan) 0%, rgba(46, 242, 208, 0) 52%, var(--orange) 100%);
    opacity: 0.9;
    pointer-events: none;
  }

  .header-inner {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 1.4rem;
    height: 100%;
    padding: 1.55rem 1.15rem 1.25rem;
    overflow-y: auto;
  }

  .brand { gap: 0.75rem; }
  .brand-name { font-size: 1.06rem; }
  .brand-sub { white-space: normal; }

  .nav-toggle { display: none; }

  .site-nav {
    position: static;
    width: auto;
    padding: 0;
    overflow: visible;
    flex: 1;
    background: none;
    border-left: 0;
    box-shadow: none;
    transform: none;
    visibility: visible;
    transition: none;
  }

  .nav-link {
    grid-template-columns: 2rem 1fr;
    padding: 0.6rem 0.85rem;
    font-size: 0.94rem;
  }

  .scroll-progress {
    top: auto;
    bottom: 0;
    left: 0;
    width: var(--rail-w);
    height: 3px;
  }

  body.nav-open { overflow: auto; }
}

/* ---------- 17. 站点页脚 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(3rem, 8vw, 6rem);
  background: linear-gradient(180deg, #0B1424 0%, #05090F 100%);
  border-top: 1px solid var(--line);
  color: var(--steel);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -46%;
  right: -18%;
  width: 620px;
  height: 620px;
  background: radial-gradient(circle, rgba(46, 242, 208, 0.13), transparent 68%);
  pointer-events: none;
}

.site-footer::after {
  content: "";
  position: absolute;
  bottom: -40%;
  left: -14%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(255, 106, 43, 0.10), transparent 70%);
  pointer-events: none;
}

.footer-grid {
  position: relative;
  z-index: 1;
  width: min(100% - 2.5rem, var(--content-max));
  margin-inline: auto;
  padding: clamp(2.6rem, 5vw, 4rem) 0 clamp(1.4rem, 3vw, 2.2rem);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 2.6rem);
}

@media (min-width: 620px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (min-width: 1024px) {
  .footer-grid {
    width: min(100% - 3rem, var(--content-max));
    grid-template-columns: 1.5fr repeat(3, minmax(0, 1fr));
  }
  .footer-brand { grid-column: auto; }
}

@media (min-width: 1280px) {
  .footer-grid { grid-template-columns: 1.65fr repeat(3, minmax(0, 1fr)); }
}

.footer-brand { display: grid; gap: 0.85rem; align-content: start; }

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}

.footer-logo-text {
  font-size: 1.08rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.footer-summary {
  font-size: 0.92rem;
  line-height: 1.78;
  color: rgba(169, 184, 204, 0.9);
  max-width: 34ch;
}

.footer-badge { margin-top: 0.15rem; }

.footer-col { display: flex; flex-direction: column; gap: 0.85rem; }

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(169, 184, 204, 0.62);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  list-style: none;
}

.footer-links a {
  display: inline-block;
  font-size: 0.94rem;
  color: var(--paper);
  transition: color 180ms var(--ease), transform 180ms var(--ease);
}

.footer-links a:hover {
  color: var(--cyan);
  transform: translateX(3px);
}

.footer-contact-bar {
  position: relative;
  z-index: 1;
  width: min(100% - 2.5rem, var(--content-max));
  margin-inline: auto;
  padding: 1.3rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.8rem;
  border-top: 1px dashed var(--line-strong);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

@media (min-width: 1024px) {
  .footer-contact-bar { width: min(100% - 3rem, var(--content-max)); }
}

.contact-item {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
}

.contact-key {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: rgba(169, 184, 204, 0.6);
}

.contact-value {
  color: var(--paper);
  word-break: break-all;
}

.contact-note {
  flex-basis: 100%;
  font-size: 0.76rem;
  line-height: 1.7;
  color: rgba(169, 184, 204, 0.62);
}

.footer-base {
  position: relative;
  z-index: 1;
  width: min(100% - 2.5rem, var(--content-max));
  margin-inline: auto;
  padding: 1rem 0 2.2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.4rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  color: rgba(169, 184, 204, 0.7);
}

@media (min-width: 1024px) {
  .footer-base { width: min(100% - 3rem, var(--content-max)); }
}

.footer-region { color: rgba(46, 242, 208, 0.75); }

/* ---------- 18. 降低动效 ---------- */
@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;
    scroll-behavior: auto !important;
  }

  .reveal-pending,
  .reveal-pending.is-visible {
    opacity: 1 !important;
    transform: none !important;
  }

  .status-dot { animation: none; }
  .scroll-progress-bar { transition: none; }
}