/* ==========================================================================
   星空体育主站 · 共享外壳样式 /assets/site.css
   结构：变量 → reset → 排版 → 网格工具 → 外框(头) → 外框(脚) → 通用组件
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root {
  --void: #060B1A;
  --void-2: #0E1526;
  --paper: #F4F6FA;
  --white: #FFFFFF;
  --ink: #0A0D14;
  --graphite: #5A6474;
  --hairline: #D7DDE8;
  --nebula: #6C4BFF;
  --pulse: #22D3EE;
  --card-y: #F2C230;
  --card-r: #E2453C;
  --lamp: #CFE6FF;

  --font-sans: system-ui, -apple-system, "PingFang SC", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --topbar-h: 56px;
  --rail-w: 0px;
  --gutter: clamp(20px, 4vw, 64px);
  --radius-lg: 28px;
  --radius-md: 22px;
  --radius-sm: 16px;
  --ease: cubic-bezier(0.2, 0, 0, 1);

  --fg: var(--lamp);
  --fg-muted: rgba(207, 230, 255, 0.62);
  --line: rgba(207, 230, 255, 0.16);
  --surface: var(--void-2);
  --hl: var(--pulse);
}

@media (min-width: 1024px) { :root { --rail-w: 208px; } }
@media (min-width: 1440px) { :root { --rail-w: 240px; --topbar-h: 60px; } }

/* ---------- 2. 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, blockquote, dl, dd, table, fieldset {
  margin: 0;
}
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
table { border-collapse: collapse; border-spacing: 0; }
img, svg, video { display: block; max-width: 100%; height: auto; }
[hidden] { display: none !important; }
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--pulse);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  background: var(--void);
  color: var(--lamp);
  min-height: 100vh;
  padding-top: var(--topbar-h);
  padding-left: var(--rail-w);
  overflow-x: hidden;
}
body::selection { background: var(--nebula); color: #fff; }

p { max-width: 62ch; }
p + p { margin-top: 1.5em; }

h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  max-width: 32ch;
}

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

/* ---------- 4. 网格与容器 ---------- */
.container {
  width: 100%;
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(56px, 8vw, 128px);
}

.section--void {
  --fg: var(--lamp);
  --fg-muted: rgba(207, 230, 255, 0.6);
  --line: rgba(207, 230, 255, 0.16);
  --surface: var(--void-2);
  --hl: var(--pulse);
  background: var(--void);
  color: var(--fg);
}

.section--paper {
  --fg: var(--ink);
  --fg-muted: var(--graphite);
  --line: rgba(10, 13, 20, 0.12);
  --surface: var(--white);
  --hl: var(--nebula);
  background: var(--paper);
  color: var(--fg);
}

.stack > * + * { margin-top: var(--stack-gap, 1.5em); }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}
.col-main { grid-column: 1 / -1; }
.col-side { grid-column: 1 / -1; }
@media (min-width: 1024px) {
  .col-main { grid-column: 1 / span 7; }
  .col-side { grid-column: 9 / span 3; }
}

.hairline {
  height: 1px;
  border: 0;
  background: var(--line);
}

.starfield { position: relative; }
.starfield::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
  background-image:
    radial-gradient(1.3px 1.3px at 11% 22%, rgba(207, 230, 255, 0.85), transparent 60%),
    radial-gradient(1.1px 1.1px at 26% 68%, rgba(207, 230, 255, 0.6), transparent 60%),
    radial-gradient(1.5px 1.5px at 44% 13%, rgba(207, 230, 255, 0.7), transparent 60%),
    radial-gradient(1px 1px at 62% 47%, rgba(207, 230, 255, 0.55), transparent 60%),
    radial-gradient(1.4px 1.4px at 79% 76%, rgba(207, 230, 255, 0.7), transparent 60%),
    radial-gradient(1px 1px at 90% 32%, rgba(207, 230, 255, 0.5), transparent 60%);
}
.starfield > * { position: relative; z-index: 1; }

/* ---------- 5. 文字层级 ---------- */
.display-xl {
  font-size: clamp(48px, 9vw, 160px);
  font-weight: 200;
  letter-spacing: -0.03em;
  line-height: 0.92;
  color: var(--fg);
  max-width: none;
}

.index-type {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--nebula);
}

.lead {
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.75;
  color: var(--fg-muted);
  max-width: 62ch;
}

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

/* ---------- 6. 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--white);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  transform: translateY(-220%);
  transition: transform 0.18s var(--ease);
}
.skip-link:focus-visible { transform: translateY(0); }

/* ---------- 7. 顶部窄条 ---------- */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(12px, 3vw, 40px);
  padding-left: calc(var(--rail-w) + var(--gutter));
  padding-right: var(--gutter);
  background: rgba(6, 11, 26, 0.9);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(207, 230, 255, 0.14);
  color: var(--lamp);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.brand__mark {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--pulse);
}
.brand__mark::after {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  background: var(--nebula);
}
.brand__text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}
.brand__name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--lamp);
  white-space: nowrap;
}
.brand__desc {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: rgba(207, 230, 255, 0.5);
  white-space: nowrap;
}

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

.util-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border: 1px solid rgba(207, 230, 255, 0.18);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: rgba(207, 230, 255, 0.7);
  white-space: nowrap;
}
.util-chip__key { color: rgba(207, 230, 255, 0.42); }
.util-chip__val { color: var(--lamp); }

.util-cta {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid rgba(108, 75, 255, 0.7);
  background: rgba(108, 75, 255, 0.18);
  color: #D6CCFF;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.util-cta:hover {
  background: rgba(108, 75, 255, 0.36);
  border-color: var(--pulse);
  color: var(--white);
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(207, 230, 255, 0.24);
  color: var(--lamp);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition: border-color 0.18s var(--ease);
}
.nav-toggle:hover { border-color: var(--pulse); }
.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 1px;
  background: currentColor;
  transition: background-color 0.18s var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 1px;
  background: currentColor;
  transition: transform 0.2s var(--ease);
}
.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

/* ---------- 8. 左侧竖向编号栏目 ---------- */
.rail {
  position: fixed;
  top: var(--topbar-h);
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 55;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 18px;
  padding: 24px 16px;
  background: linear-gradient(180deg, rgba(14, 21, 38, 0.94), rgba(6, 11, 26, 0.98));
  border-right: 1px solid rgba(207, 230, 255, 0.12);
  overflow-y: auto;
}
.rail__caption,
.rail__foot {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(207, 230, 255, 0.34);
  max-width: none;
}
.rail__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.rail__link {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: rgba(207, 230, 255, 0.66);
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.rail__link:hover {
  color: var(--lamp);
  border-color: rgba(34, 211, 238, 0.45);
  background: rgba(34, 211, 238, 0.07);
}
.rail__link[aria-current="page"] {
  color: var(--white);
  border-color: rgba(108, 75, 255, 0.6);
  background: linear-gradient(90deg, rgba(108, 75, 255, 0.28), rgba(108, 75, 255, 0));
}
.rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(207, 230, 255, 0.36);
}
.rail__link[aria-current="page"] .rail__num { color: var(--pulse); }
.rail__label {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ---------- 9. 右侧当前栏目刻度 ---------- */
.rail-index {
  position: fixed;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 54;
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  pointer-events: none;
  font-family: var(--font-mono);
  color: rgba(207, 230, 255, 0.5);
}
@media (min-width: 1024px) { .rail-index { display: flex; } }
.rail-index__key {
  font-size: 10px;
  letter-spacing: 0.24em;
  writing-mode: vertical-rl;
}
.rail-index__num {
  font-size: 16px;
  letter-spacing: 0.1em;
  color: var(--nebula);
}
.rail-index__rule {
  width: 1px;
  height: 72px;
  background: linear-gradient(180deg, rgba(207, 230, 255, 0.5), rgba(207, 230, 255, 0));
}
.rail-index__label {
  font-size: 12px;
  letter-spacing: 0.32em;
  writing-mode: vertical-rl;
  color: rgba(207, 230, 255, 0.82);
}

/* ---------- 10. 遮罩与进度条 ---------- */
.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(6, 11, 26, 0.72);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

.scroll-progress {
  position: fixed;
  top: var(--topbar-h);
  left: var(--rail-w);
  right: 0;
  height: 2px;
  z-index: 70;
  pointer-events: none;
}
.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--nebula), var(--pulse));
  transition: transform 0.1s linear;
}

/* ---------- 11. 移动端抽屉 ---------- */
@media (max-width: 1023.98px) {
  .nav-toggle { display: inline-flex; }

  .brand__desc { display: none; }
  .util-chip--time { display: none; }

  .rail {
    width: min(80vw, 320px);
    justify-content: flex-start;
    padding: 28px 18px 40px;
    transform: translateX(-102%);
    transition: transform 0.32s var(--ease);
    box-shadow: 24px 0 60px rgba(0, 0, 0, 0.55);
  }
  .sky-shell[data-open] .rail { transform: none; }

  .sky-shell[data-open] .nav-toggle__bars { background: transparent; }
  .sky-shell[data-open] .nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
  .sky-shell[data-open] .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }

  .rail__list { gap: 4px; }
  .rail__link { padding: 13px 14px; }
}

@media (max-width: 599.98px) {
  .util-chip--ver { display: none; }
  .brand__name { font-size: 14px; }
  .util-cta { padding: 6px 12px; font-size: 11.5px; }
}

/* ---------- 12. 按钮与胶囊 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--fg);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}
.btn:hover {
  border-color: var(--hl);
  box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.35);
}
.btn--accent {
  background: var(--nebula);
  border-color: var(--nebula);
  color: var(--white);
}
.btn--accent:hover {
  background: #7D5FFF;
  border-color: var(--pulse);
}
.btn--ghost { background: transparent; border-color: var(--line); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  white-space: nowrap;
}
.pill--purple {
  border-color: rgba(108, 75, 255, 0.5);
  background: rgba(108, 75, 255, 0.16);
  color: #C4B7FF;
}
.pill--yellow {
  border-color: transparent;
  background: var(--card-y);
  color: var(--ink);
}
.pill--red {
  border-color: transparent;
  background: var(--card-r);
  color: var(--white);
}
.section--paper .pill--purple {
  background: rgba(108, 75, 255, 0.12);
  color: #4A2FD6;
}

/* ---------- 13. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.breadcrumbs a:hover { color: var(--fg); }
.breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(90, 100, 116, 0.8);
}

/* ---------- 14. 数据表 ---------- */
.table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.data-table {
  width: 100%;
  min-width: 520px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  line-height: 1.6;
}
.data-table thead th {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-muted);
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.data-table tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  color: var(--fg);
}
.data-table tbody tr { transition: background-color 0.18s var(--ease); }
.data-table tbody tr:hover { background: rgba(108, 75, 255, 0.1); }
.data-table .is-num { text-align: right; }
.data-table caption {
  caption-side: bottom;
  text-align: left;
  padding-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
}

/* ---------- 15. 图片容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background:
    linear-gradient(140deg, rgba(108, 75, 255, 0.3), rgba(6, 11, 26, 0.92) 62%),
    var(--void-2);
  aspect-ratio: 16 / 9;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.4;
  background-image:
    radial-gradient(1.4px 1.4px at 18% 26%, rgba(207, 230, 255, 0.8), transparent 60%),
    radial-gradient(1px 1px at 48% 62%, rgba(207, 230, 255, 0.6), transparent 60%),
    radial-gradient(1.2px 1.2px at 76% 34%, rgba(207, 230, 255, 0.7), transparent 60%);
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.05) brightness(0.92);
}
.media-frame__caption {
  position: absolute;
  left: 18px;
  bottom: 16px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(207, 230, 255, 0.86);
}

/* ---------- 16. 折叠面板 ---------- */
.accordion { border-top: 1px solid var(--line); }
.accordion__item { border-bottom: 1px solid var(--line); }
.accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 4px;
  text-align: left;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--fg);
  transition: color 0.18s var(--ease);
}
.accordion__trigger:hover { color: var(--hl); }
.accordion__trigger::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  margin-right: 4px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.2s var(--ease);
}
.accordion__trigger[aria-expanded="true"]::after { transform: rotate(-135deg); }
.accordion__panel {
  padding: 0 4px 24px;
  color: var(--fg-muted);
  max-width: 62ch;
}

/* ---------- 17. 显现 ---------- */
[data-reveal] {
  opacity: 0.6;
  transform: translateY(8px);
  transition: opacity 0.18s var(--ease), transform 0.18s var(--ease);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 18. 页脚 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  background: var(--void);
  color: var(--lamp);
  border-top: 1px solid rgba(207, 230, 255, 0.14);
  padding: clamp(56px, 7vw, 120px) var(--gutter) clamp(28px, 3vw, 44px);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    radial-gradient(1.4px 1.4px at 7% 16%, rgba(207, 230, 255, 0.9), transparent 55%),
    radial-gradient(1.1px 1.1px at 21% 62%, rgba(207, 230, 255, 0.65), transparent 55%),
    radial-gradient(1.5px 1.5px at 38% 28%, rgba(207, 230, 255, 0.8), transparent 55%),
    radial-gradient(1px 1px at 55% 74%, rgba(207, 230, 255, 0.5), transparent 55%),
    radial-gradient(1.3px 1.3px at 72% 40%, rgba(207, 230, 255, 0.7), transparent 55%),
    radial-gradient(1px 1px at 86% 82%, rgba(207, 230, 255, 0.55), transparent 55%),
    radial-gradient(1.2px 1.2px at 94% 20%, rgba(207, 230, 255, 0.6), transparent 55%);
}
.site-footer::after {
  content: "";
  position: absolute;
  top: -240px;
  right: -180px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, rgba(108, 75, 255, 0.32), rgba(108, 75, 255, 0) 66%);
}

.footer__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(32px, 4vw, 64px);
  grid-template-columns: 1fr;
  max-width: 1440px;
  margin-inline: auto;
}
@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: minmax(240px, 1.5fr) repeat(3, minmax(120px, 0.7fr));
  }
}

.footer__brand { display: flex; flex-direction: column; gap: 18px; }
.brand--footer .brand__name { font-size: 16px; }
.brand--footer .brand__desc { color: rgba(207, 230, 255, 0.46); }

.footer__pitch {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(207, 230, 255, 0.62);
  max-width: 34ch;
}
.footer__version {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(207, 230, 255, 0.45);
  max-width: none;
}

.footer__col { display: flex; flex-direction: column; gap: 14px; }
.footer__title {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(207, 230, 255, 0.42);
  max-width: none;
}
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__links a {
  display: inline-block;
  font-size: 14px;
  color: rgba(207, 230, 255, 0.72);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.footer__links a:hover {
  color: var(--white);
  border-bottom-color: var(--pulse);
}

.footer__base {
  position: relative;
  z-index: 1;
  max-width: 1440px;
  margin: clamp(40px, 5vw, 72px) auto 0;
  padding-top: 26px;
  border-top: 1px solid rgba(207, 230, 255, 0.14);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer__contact {
  font-size: 13.5px;
  color: rgba(207, 230, 255, 0.74);
  max-width: 78ch;
}
.footer__note,
.footer__update {
  font-size: 12px;
  line-height: 1.7;
  color: rgba(207, 230, 255, 0.42);
  max-width: 78ch;
}
.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(207, 230, 255, 0.55);
  max-width: none;
}

/* ---------- 19. 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;
    scroll-behavior: auto !important;
  }
  .scroll-progress__bar { transition: none; }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
}