/* ============================================================
   风云体育看台 · 共享样式 /assets/site.css
   深海蓝夜场底 · 荧光青灯线 · 珊瑚橙警示 · 沙白文字
   ============================================================ */

/* ---------- 0. 变量 ---------- */
:root {
  --ink: #05192B;
  --ink-2: #0B2640;
  --ink-3: #162A55;
  --cyan: #22F0CE;
  --cyan-soft: #0E3F47;
  --coral: #FF6A45;
  --coral-ink: #2A0D05;
  --grass: #1E8A5F;
  --sand: #F3EEE4;
  --sand-2: #D8D2C4;
  --deep: #0E2A33;

  --line: rgba(34, 240, 206, 0.22);
  --line-2: rgba(34, 240, 206, 0.46);
  --line-soft: rgba(243, 238, 228, 0.14);
  --line-soft-2: rgba(243, 238, 228, 0.28);

  --r-panel: 28px;
  --r-block: 20px;
  --r-sm: 14px;
  --r-pill: 999px;

  --pad-x: clamp(1rem, 4.2vw, 3.25rem);
  --gap: clamp(1rem, 2vw, 1.75rem);
  --shell-w: 1360px;
  --slice: 26px;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-num: ui-monospace, "SFMono-Regular", "JetBrains Mono", "DejaVu Sans Mono", Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.22, 0.8, 0.24, 1);
  --scroll-progress: 0;
}

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

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

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

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

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

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

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

button { background: none; border: 0; padding: 0; cursor: pointer; }

:where(a, button, summary, input, select, textarea):focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 2. 中文排版与页面基底 ---------- */
body {
  min-height: 100vh;
  overflow-x: hidden;
  margin: 0;
  color: var(--sand);
  font-family: var(--font-sans);
  font-size: clamp(15px, 0.35vw + 13.8px, 17.5px);
  line-height: 1.75;
  background:
    radial-gradient(1180px 620px at 84% -10%, rgba(34, 240, 206, 0.10), transparent 62%),
    radial-gradient(900px 540px at -12% 22%, rgba(22, 42, 85, 0.85), transparent 60%),
    radial-gradient(700px 420px at 60% 108%, rgba(30, 138, 95, 0.10), transparent 65%),
    var(--ink);
}

h1, h2, h3, h4 {
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--sand);
  text-wrap: balance;
}

h1 { font-size: clamp(2.15rem, 6.2vw, 4.5rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(1.55rem, 3.4vw, 2.6rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.5rem); }
h4 { font-size: clamp(1rem, 1.3vw, 1.2rem); }

p { text-wrap: pretty; }

strong { color: var(--sand); }

#main-content { scroll-margin-top: 6.5rem; }

/* ---------- 3. 布局容器 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-w);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.prose {
  max-width: 66ch;
  color: var(--sand-2);
  line-height: 1.8;
}

.prose p + p { margin-top: 1em; }
.prose ul, .prose ol { margin-block: 1em; padding-left: 1.25em; }
.prose li + li { margin-top: 0.35em; }
.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  flex: none;
  width: 26px;
  height: 2px;
  background: var(--cyan);
  transform: skewX(-16deg);
}

.pitch-line {
  position: relative;
  height: 1px;
  margin-block: clamp(1.5rem, 4vw, 3rem);
  background: linear-gradient(90deg, var(--line-soft-2), rgba(243, 238, 228, 0));
}

.pitch-line::before {
  content: "";
  position: absolute;
  left: 0;
  top: -4px;
  width: 54px;
  height: 9px;
  border-radius: var(--r-pill);
  background: var(--cyan);
  transform: skewX(-28deg);
}

/* ---------- 4. 数字与统计 ---------- */
.digit {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat { display: grid; gap: 0.4rem; }

.stat__value {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--cyan);
}

.stat__label {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--sand-2);
}

.stat--coral .stat__value { color: var(--coral); }
.stat--grass .stat__value { color: #4FD39C; }

/* ---------- 5. 面板 / 标签 / 口径 ---------- */
.panel {
  position: relative;
  padding: clamp(1.25rem, 2.4vw, 2rem);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-panel);
  background: linear-gradient(160deg, rgba(11, 38, 64, 0.92), rgba(5, 25, 43, 0.72));
}

.panel--accent {
  border-color: var(--line);
  box-shadow: 0 0 0 1px rgba(34, 240, 206, 0.06), 0 26px 60px -42px rgba(34, 240, 206, 0.6);
}

.panel--variant {
  background: linear-gradient(160deg, rgba(22, 42, 85, 0.95), rgba(11, 38, 64, 0.7));
}

.panel--light {
  background: var(--sand);
  border-color: transparent;
  color: var(--deep);
}

.panel--light h1, .panel--light h2, .panel--light h3 { color: var(--deep); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.78rem;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(34, 240, 206, 0.07);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
  white-space: nowrap;
}

.pill--coral {
  border-color: rgba(255, 106, 69, 0.4);
  background: rgba(255, 106, 69, 0.12);
  color: #FFB9A4;
}

.pill--grass {
  border-color: rgba(30, 138, 95, 0.5);
  background: rgba(30, 138, 95, 0.18);
  color: #7FE0B6;
}

.caliber {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  margin-top: 1rem;
  padding: 0.7rem 0.95rem;
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--r-block) var(--r-block) 0;
  background: var(--cyan-soft);
  font-size: 0.78rem;
  line-height: 1.65;
  color: #B9E9E3;
}

.caliber__tag {
  flex: none;
  font-family: var(--font-num);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.caliber--warn {
  border-left-color: var(--coral);
  background: rgba(255, 106, 69, 0.12);
  color: #FFC7B6;
}

.caliber--warn .caliber__tag { color: var(--coral); }

/* ---------- 6. 网格 ---------- */
.grid { display: grid; gap: clamp(1rem, 2vw, 1.6rem); }
.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--asym { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); }
.grid--rail { grid-template-columns: minmax(0, 9fr) minmax(0, 3fr); }

@media (max-width: 1080px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  .grid--3, .grid--asym, .grid--rail { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .grid--2, .grid--3, .grid--4, .grid--asym, .grid--rail { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 7. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: var(--r-panel);
  background: linear-gradient(150deg, var(--ink-3), var(--ink-2));
  aspect-ratio: 16 / 10;
}

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

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame--slope {
  clip-path: polygon(0 0, 100% 0, 100% 89%, 0 100%);
  border-radius: var(--r-panel) var(--r-panel) 0 0;
}

.media-frame__index {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  z-index: 2;
  padding: 0.2rem 0.72rem;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(5, 25, 43, 0.72);
  font-family: var(--font-num);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.45rem;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: transform 0.22s var(--ease), background-color 0.22s var(--ease),
              color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.btn--accent {
  background: var(--cyan);
  color: #04202B;
  box-shadow: 0 16px 34px -22px rgba(34, 240, 206, 0.95);
}

.btn--accent:hover { background: #5FF7DC; transform: translateY(-2px); }

.btn--ghost {
  border-color: var(--line);
  background: rgba(243, 238, 228, 0.04);
  color: var(--sand);
}

.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }

.btn--coral { background: var(--coral); color: var(--coral-ink); }
.btn--coral:hover { background: #FF8A6B; transform: translateY(-2px); }

.btn--block { width: 100%; }

/* ---------- 9. 面包屑 ---------- */
.breadcrumb {
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--sand-2);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.breadcrumb li + li::before {
  content: "/";
  color: rgba(243, 238, 228, 0.32);
}

.breadcrumb a { transition: color 0.2s var(--ease); }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb [aria-current="page"] { color: var(--sand); }

/* ---------- 10. 跳过链接 ---------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -4.5rem;
  z-index: 100;
  padding: 0.7rem 1.15rem;
  border-radius: 0 0 var(--r-sm) var(--r-sm);
  background: var(--cyan);
  color: #04202B;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: top 0.22s var(--ease);
}

.skip-link:focus { top: 0; }

/* ============================================================
   11. 页头
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  color: var(--sand);
  background: linear-gradient(180deg, rgba(5, 25, 43, 0.98), rgba(5, 25, 43, 0.9));
  border-bottom: 1px solid var(--line-soft);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), rgba(34, 240, 206, 0.15) 44%, rgba(34, 240, 206, 0) 80%);
  pointer-events: none;
}

.scroll-progress {
  position: absolute;
  inset: 0 0 auto 0;
  z-index: 3;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--coral));
  transform: scaleX(var(--scroll-progress));
  transform-origin: 0 50%;
  pointer-events: none;
}

.header-rail {
  background: linear-gradient(90deg, rgba(11, 38, 64, 0.96), rgba(22, 42, 85, 0.82) 56%, rgba(11, 38, 64, 0.96));
  border-bottom: 1px solid var(--line-soft);
}

.header-rail__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.34rem;
  font-size: 0.7rem;
}

.header-rail__note {
  overflow: hidden;
  color: var(--sand-2);
  font-family: var(--font-num);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  white-space: nowrap;
  text-overflow: ellipsis;
  opacity: 0.82;
}

.utility-nav {
  display: flex;
  flex: none;
  gap: 0.4rem;
}

.utility-link {
  padding: 0.16rem 0.68rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  color: var(--sand-2);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.utility-link:hover,
.utility-link:focus-visible {
  color: #04202B;
  background: var(--cyan);
  border-color: var(--cyan);
}

.header-bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(0.7rem, 2vw, 2rem);
  padding-block: 0.7rem;
}

/* 品牌号牌 */
.brand {
  display: inline-flex;
  flex: none;
  align-items: center;
  gap: 0.7rem;
  color: var(--sand);
}

.brand__mark {
  display: grid;
  flex: none;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--r-sm);
  background: linear-gradient(150deg, var(--cyan), #0FB99C);
  color: #04202B;
  font-family: var(--font-num);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.05em;
  box-shadow: 0 0 0 1px rgba(34, 240, 206, 0.4), 0 16px 30px -22px rgba(34, 240, 206, 0.95);
}

.brand__words {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.brand__text {
  font-size: 1.04rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.brand__sub {
  color: var(--sand-2);
  font-size: 0.66rem;
  line-height: 1.2;
  letter-spacing: 0.18em;
  white-space: nowrap;
  opacity: 0.72;
}

/* 主导航 */
.site-nav { margin-inline: auto; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.5vw, 1.5rem);
  counter-reset: nav-index;
  list-style: none;
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.42rem;
  padding: 0.55rem 0.1rem 0.8rem;
  color: var(--sand-2);
  font-size: 0.93rem;
  letter-spacing: 0.06em;
  transition: color 0.22s var(--ease);
}

.site-nav__link::before {
  counter-increment: nav-index;
  content: counter(nav-index, decimal-leading-zero);
  font-family: var(--font-num);
  font-size: 0.6rem;
  letter-spacing: 0;
  color: var(--cyan);
  opacity: 0.5;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.42rem;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0) skewX(-16deg);
  transform-origin: 0 50%;
  transition: transform 0.3s var(--ease);
}

.site-nav__link:hover { color: var(--sand); }
.site-nav__link:hover::after { transform: scaleX(0.45) skewX(-16deg); }

.site-nav__link[aria-current="page"] { color: var(--cyan); }
.site-nav__link[aria-current="page"]::before { opacity: 1; }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1) skewX(-16deg); }

/* 页头 CTA */
.header-cta {
  flex: none;
  padding: 0.58rem 1.05rem;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(34, 240, 206, 0.08);
  color: var(--sand);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 10px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform 0.25s var(--ease), top 0.25s var(--ease), bottom 0.25s var(--ease);
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  top: 4px;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  bottom: 4px;
  transform: rotate(-45deg);
}

/* ---------- 12. 页头响应式 ---------- */
@media (max-width: 1180px) {
  .brand__sub { display: none; }
  .site-nav__link::before { display: none; }
  .site-nav__list { gap: clamp(0.4rem, 1.2vw, 1rem); }
}

@media (max-width: 920px) {
  .nav-toggle { display: inline-flex; }

  .header-cta {
    padding: 0.5rem 0.8rem;
    font-size: 0.74rem;
    letter-spacing: 0.02em;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin: 0;
    display: block;
    padding: 0.5rem var(--pad-x) 1.3rem;
    border-bottom: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(11, 38, 64, 0.98), rgba(5, 25, 43, 0.99));
    box-shadow: 0 32px 60px -32px rgba(0, 0, 0, 0.9);
    max-height: calc(100vh - 92px);
    overflow-y: auto;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.24s var(--ease), transform 0.3s var(--ease), visibility 0.24s linear;
  }

  .site-nav[data-open] {
    visibility: visible;
    opacity: 1;
    transform: none;
  }

  .site-nav__list { display: grid; gap: 0; }

  .site-nav__link {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 0.9rem 0.2rem;
    border-bottom: 1px dashed rgba(243, 238, 228, 0.14);
    color: var(--sand);
    font-size: 1rem;
    letter-spacing: 0.08em;
  }

  .site-nav__link::after { display: none; }

  .site-nav__link[aria-current="page"] {
    padding-left: 0.85rem;
    color: var(--cyan);
    box-shadow: inset 3px 0 0 var(--cyan);
  }
}

@media (max-width: 520px) {
  .brand__mark { width: 38px; height: 38px; font-size: 0.95rem; }
  .brand__text { font-size: 0.92rem; }
  .header-rail__note { display: none; }
  .header-rail__inner { justify-content: flex-end; }
  .utility-link { padding: 0.12rem 0.55rem; font-size: 0.64rem; }
}

/* ============================================================
   13. 页脚
   ============================================================ */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 7vw, 6.5rem);
  padding-block: clamp(2.4rem, 5vw, 3.75rem) 1.4rem;
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(11, 38, 64, 0.96), rgba(4, 18, 31, 1));
  color: var(--sand-2);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(52%, 560px);
  height: 5px;
  background: linear-gradient(90deg, var(--cyan), rgba(34, 240, 206, 0));
  clip-path: polygon(0 0, 100% 0, calc(100% - var(--slice)) 100%, 0 100%);
  pointer-events: none;
}

.footer-grid {
  display: grid;
  gap: clamp(1.6rem, 3.4vw, 2.8rem);
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.9fr) minmax(0, 0.9fr) minmax(0, 1.25fr);
  padding-top: clamp(1.2rem, 3vw, 2rem);
}

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

.footer-brand .brand__text { font-size: 1rem; }

.footer-note {
  margin-top: 1rem;
  max-width: 30ch;
  color: var(--sand-2);
  font-size: 0.82rem;
  line-height: 1.75;
  opacity: 0.85;
}

.footer-col {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.footer-col__title {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1rem;
  color: var(--cyan);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.26em;
}

.footer-col__title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line), rgba(34, 240, 206, 0));
}

.footer-links {
  display: grid;
  gap: 0.55rem;
  list-style: none;
}

.footer-links a {
  display: inline-block;
  padding: 0.1rem 0;
  color: var(--sand-2);
  font-size: 0.85rem;
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--cyan);
  transform: translateX(4px);
}

.contact-list {
  display: grid;
  gap: 0.8rem;
  list-style: none;
}

.contact-list li { display: grid; gap: 0.15rem; }

.contact-list__key {
  font-family: var(--font-num);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
  opacity: 0.8;
}

.contact-list__value {
  color: var(--sand);
  font-size: 0.85rem;
  line-height: 1.6;
  word-break: break-word;
}

.contact-list__note {
  color: var(--sand-2);
  font-size: 0.74rem;
  line-height: 1.6;
  opacity: 0.75;
}

.footer-legal {
  display: grid;
  gap: 1rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.4rem;
  border-top: 1px solid var(--line-soft);
}

.footer-legal__line {
  max-width: 78ch;
  color: var(--sand-2);
  font-size: 0.76rem;
  line-height: 1.8;
  opacity: 0.78;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.9rem;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--sand-2);
  opacity: 0.8;
}

.footer-meta__dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: 0.7;
}

@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-note { max-width: none; }
}

/* ---------- 14. 显现动效 ---------- */
[data-reveal] {
  transition: opacity 0.65s var(--ease), transform 0.7s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
}

html.js [data-reveal][data-revealed] {
  opacity: 1;
  transform: none;
}

/* ---------- 15. 无障碍与动效偏好 ---------- */
@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 [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .btn:hover { transform: none; }
  .footer-links a:hover { transform: none; }
}