/* =============================================================
   AOA 体育官网 · 共享 Site Kit
   路径：/assets/site.css
   骨架：左侧品牌轨道 + 右侧内容区（移动端塌陷为顶条 + 贴底战术板）
   ============================================================= */

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

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

body, h1, h2, h3, h4, p, ul, ol, figure, blockquote, address {
  margin: 0;
}

ul, ol {
  padding: 0;
  list-style: none;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
}

a { color: var(--green); text-decoration: none; }

::selection { background: var(--red); color: #fff; }

/* ---------- 2. 变量 ---------- */
:root {
  --night: #0B1220;
  --stand: #141E33;
  --red: #E6192B;
  --red-deep: #A20E1E;
  --yellow: #FFC61A;
  --green: #2BE37A;
  --white: #F5F7FA;
  --mist: #8A93A6;
  --text-soft: #C6CFE0;
  --cyan: #7FE7FF;
  --glass: rgba(255, 255, 255, 0.08);
  --glass-strong: rgba(255, 255, 255, 0.16);
  --line: rgba(255, 255, 255, 0.12);

  --font-head: 'Oswald', 'Barlow Condensed', 'Noto Sans SC', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-num: 'JetBrains Mono', 'Roboto Mono', ui-monospace, monospace;

  --rail-w: 268px;
  --bar-h: 60px;
  --maxw: 1180px;
  --r-s: 8px;
  --r-m: 14px;
  --r-l: 22px;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
}

/* ---------- 3. 基础排版 ---------- */
body {
  position: relative;
  min-height: 100vh;
  padding-left: var(--rail-w);
  background: var(--night);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 草皮割线 + 看台灯带 + 跑道光晕（纯 CSS 装饰层） */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(880px 520px at 84% -12%, rgba(230, 25, 43, 0.20), transparent 70%),
    radial-gradient(720px 460px at 6% 108%, rgba(43, 227, 122, 0.10), transparent 72%),
    radial-gradient(600px 380px at 50% 120%, rgba(255, 198, 26, 0.07), transparent 70%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.022) 0 2px, transparent 2px 132px);
}

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

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.012em;
}

h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); }
h2 { font-size: clamp(1.55rem, 2.8vw, 2.2rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.4rem); }

p { color: var(--text-soft); }

strong { color: var(--white); font-weight: 700; }

.num,
.stat__value {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
  border-radius: 4px;
}

.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;
}

body.is-locked { overflow: hidden; }

/* ---------- 4. 跳至主内容 ---------- */
.skip-link {
  position: fixed;
  top: 0.5rem;
  left: 50%;
  z-index: 200;
  transform: translate(-50%, -180%);
  padding: 0.6rem 1.15rem;
  border-radius: var(--r-s);
  background: var(--yellow);
  color: #161C10;
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: 0.06em;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease-out;
}

.skip-link:focus { transform: translate(-50%, 0); }

/* ---------- 5. 滚动进度 ---------- */
.progress {
  position: fixed;
  top: 0;
  left: var(--rail-w);
  right: 0;
  height: 3px;
  z-index: 90;
  pointer-events: none;
  background: rgba(255, 255, 255, 0.06);
}

.progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--red), var(--yellow) 55%, var(--green));
  transition: width 0.08s linear;
}

/* ---------- 6. 头部：轨道 + 顶栏 ---------- */
.site-header {
  position: relative;
  z-index: 80;
}

.rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 80;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  padding: 1.35rem 1rem 1.2rem;
  background: linear-gradient(180deg, #0E1729 0%, #0B1220 58%, #0A101C 100%);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.rail::after {
  content: "";
  position: absolute;
  top: 0;
  right: -1px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--red), rgba(255, 198, 26, 0.7) 42%, rgba(43, 227, 122, 0.35) 68%, transparent 92%);
  pointer-events: none;
}

.rail__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--white);
  text-decoration: none;
}

.brand__mark {
  flex: none;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--red), var(--red-deep));
  box-shadow: 0 10px 22px rgba(230, 25, 43, 0.38);
  transform: skewX(-6deg);
}

.brand__mark-txt {
  display: block;
  transform: skewX(6deg);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  color: #fff;
}

.brand__name {
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: 0.04em;
  line-height: 1.2;
  transition: color 0.2s ease;
}

.brand__sub {
  display: block;
  margin-top: 2px;
  font-family: var(--font-num);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.brand:hover .brand__name { color: var(--yellow); }

.rail__toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  background: var(--glass);
  color: var(--white);
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.rail__toggle:hover { background: var(--glass-strong); border-color: rgba(255, 198, 26, 0.5); }

.rail__toggle-bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
}

.rail__toggle-bars::before,
.rail__toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--yellow);
  transition: top 0.25s ease-out, bottom 0.25s ease-out, transform 0.25s ease-out;
}

.rail__toggle-bars::before { top: 0; }
.rail__toggle-bars::after { bottom: 0; }

.site-header[data-open] .rail__toggle-bars::before { top: 5px; transform: rotate(45deg); }
.site-header[data-open] .rail__toggle-bars::after { bottom: 5px; transform: rotate(-45deg); }

/* 导航 */
.nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-height: 0;
}

.nav__label {
  margin: 0 0 0.55rem 0.9rem;
  font-family: var(--font-num);
  font-size: 0.66rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--mist);
}

.nav__list {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.75rem 0.55rem 0.9rem;
  border-left: 3px solid transparent;
  border-radius: 0 10px 10px 0;
  color: var(--mist);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.03em;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, transform 0.2s ease-out;
}

.nav__link:hover {
  color: var(--white);
  background: var(--glass);
  border-left-color: var(--yellow);
  transform: translateX(3px);
}

.nav__link[aria-current="page"] {
  color: var(--white);
  background: linear-gradient(90deg, rgba(230, 25, 43, 0.38), rgba(230, 25, 43, 0));
  border-left-color: var(--red);
}

.nav__link[aria-current="page"] .nav__no { color: var(--yellow); }

.nav__no {
  font-family: var(--font-num);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: rgba(138, 147, 166, 0.75);
  transition: color 0.2s ease;
}

.nav__link:hover .nav__no { color: var(--green); }

.nav__utility {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
}

.nav__pill {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.62rem 0.8rem;
  border-radius: var(--r-s);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: transform 0.2s ease-out, box-shadow 0.2s ease, filter 0.2s ease;
}

.nav__pill--red {
  background: linear-gradient(135deg, var(--red), var(--red-deep));
  color: #fff;
  box-shadow: 0 8px 20px rgba(230, 25, 43, 0.32);
}

.nav__pill--yellow {
  background: var(--yellow);
  color: #161C10;
  box-shadow: 0 8px 20px rgba(255, 198, 26, 0.2);
}

.nav__pill:hover { transform: translateY(-2px); filter: brightness(1.06); }

.rail__foot {
  margin-top: auto;
  padding-top: 0.95rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.rail__live {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0;
  font-family: var(--font-num);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--green);
}

.live-dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: live-pulse 2.2s ease-out infinite;
}

@keyframes live-pulse {
  0% { box-shadow: 0 0 0 0 rgba(43, 227, 122, 0.55); }
  70% { box-shadow: 0 0 0 10px rgba(43, 227, 122, 0); }
  100% { box-shadow: 0 0 0 0 rgba(43, 227, 122, 0); }
}

.rail__note {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* 顶栏（玻璃战术条） */
.topbar {
  position: sticky;
  top: 0;
  z-index: 70;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem clamp(1rem, 3vw, 2rem);
  background: rgba(11, 18, 32, 0.74);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  backdrop-filter: blur(14px) saturate(130%);
  border-bottom: 1px solid var(--line);
}

.topbar::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 140px;
  height: 2px;
  background: linear-gradient(90deg, var(--red), var(--yellow));
}

.topbar__status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  font-family: var(--font-num);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.68rem 1.3rem;
  border: 1px solid transparent;
  border-radius: var(--r-s);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.94rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.22s ease-out, box-shadow 0.22s ease, background 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}

.btn:hover { transform: translateY(-2px); }

.btn--primary {
  background: linear-gradient(135deg, var(--red), var(--red-deep));
  color: #fff;
  box-shadow: 0 10px 24px rgba(230, 25, 43, 0.34);
}

.btn--primary:hover { box-shadow: 0 14px 30px rgba(230, 25, 43, 0.5); }

.btn--signal {
  background: var(--yellow);
  color: #161C10;
  box-shadow: 0 10px 24px rgba(255, 198, 26, 0.22);
}

.btn--signal:hover { box-shadow: 0 14px 30px rgba(255, 198, 26, 0.38); }

.btn--ghost {
  background: var(--glass);
  border-color: var(--line);
  color: var(--white);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.btn--ghost:hover { background: var(--glass-strong); border-color: rgba(43, 227, 122, 0.55); color: var(--green); }

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

/* ---------- 8. 版式容器 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(1rem, 3vw, 2.4rem);
}

.container--tight { max-width: 820px; }

.section {
  position: relative;
  padding-block: clamp(2.6rem, 6vw, 5.2rem);
}

.section--tight { padding-block: clamp(1.8rem, 4vw, 3rem); }

.section--stand {
  background: linear-gradient(180deg, rgba(20, 30, 51, 0.78), rgba(11, 18, 32, 0));
}

.section__head {
  max-width: 62ch;
  margin-bottom: clamp(1.2rem, 3vw, 2rem);
}

.section__title { margin: 0 0 0.6rem; }

.section__lead {
  margin: 0;
  font-size: 1rem;
  color: var(--text-soft);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 0.75rem;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--yellow);
}

.eyebrow::before {
  content: "";
  flex: none;
  width: 28px;
  height: 2px;
  background: var(--red);
}

.rule {
  height: 1px;
  border: 0;
  margin: clamp(1.6rem, 4vw, 3rem) 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0));
}

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--yellow);
  border-bottom: 1px dashed rgba(255, 198, 26, 0.45);
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease-out;
}

.link-more:hover {
  color: var(--green);
  border-color: var(--green);
  transform: translateX(3px);
}

/* ---------- 9. 栅格 ---------- */
.grid {
  display: grid;
  gap: clamp(1rem, 2vw, 1.5rem);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--asym { grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.9fr); }

/* ---------- 10. 卡片 ---------- */
.card {
  position: relative;
  padding: clamp(1.1rem, 2.4vw, 1.7rem);
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: var(--stand);
  transition: transform 0.28s ease-out, box-shadow 0.28s ease, background 0.28s ease, border-color 0.28s ease;
}

.card--glass {
  background: var(--glass);
  border-color: rgba(255, 255, 255, 0.16);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  backdrop-filter: blur(14px) saturate(120%);
}

.card--glass:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
}

.card--solid {
  background: linear-gradient(158deg, #182339, #101827);
  border-color: rgba(255, 255, 255, 0.08);
}

.card--trace { padding-left: clamp(1.3rem, 2.6vw, 1.9rem); }

.card--trace::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  border-radius: var(--r-m) 0 0 var(--r-m);
  background: linear-gradient(180deg, var(--red), var(--yellow));
}

.card__title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
}

.card__text {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-soft);
}

.card__meta {
  margin-top: 0.9rem;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

/* ---------- 11. 标签与数字 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.26rem 0.62rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-num);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.tag--red {
  color: #FFD9DC;
  background: rgba(230, 25, 43, 0.18);
  border-color: rgba(230, 25, 43, 0.45);
}

.tag--yellow {
  color: #FFE9A8;
  background: rgba(255, 198, 26, 0.16);
  border-color: rgba(255, 198, 26, 0.42);
}

.tag--green {
  color: #C8FFDF;
  background: rgba(43, 227, 122, 0.14);
  border-color: rgba(43, 227, 122, 0.4);
}

.stat { display: grid; gap: 0.2rem; }

.stat__value {
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  line-height: 1;
}

.stat__label {
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

/* ---------- 12. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-num);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.breadcrumb a {
  color: var(--mist);
  transition: color 0.2s ease;
}

.breadcrumb a:hover { color: var(--green); }

.breadcrumb__sep { color: rgba(255, 255, 255, 0.24); }

.breadcrumb__current { color: var(--white); }

/* ---------- 13. 图片容器基础规则 ---------- */
.media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: linear-gradient(140deg, #16223A, #0B1220);
}

.media img,
.media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3  { aspect-ratio: 4 / 3; }
.media--1x1  { aspect-ratio: 1 / 1; }
.media--wide { aspect-ratio: 21 / 9; }

.media__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.34);
  background: repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.035) 0 12px, transparent 12px 24px);
}

.media__glow::after {
  content: "";
  position: absolute;
  inset: auto -20% -42% -20%;
  height: 62%;
  pointer-events: none;
  background: radial-gradient(50% 100% at 50% 100%, rgba(230, 25, 43, 0.42), transparent 72%);
}

.media__tag {
  position: absolute;
  top: 0.85rem;
  left: 0.85rem;
  z-index: 2;
}

.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 1rem;
  font-size: 0.85rem;
  color: var(--text-soft);
  background: linear-gradient(0deg, rgba(11, 18, 32, 0.94), rgba(11, 18, 32, 0));
}

/* ---------- 14. 显现动效 ---------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translate(-10px, 16px);
  transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.has-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 15. 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(2.4rem, 6vw, 5rem);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(20, 30, 51, 0.62), #080D16);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--red) 0 20%, var(--yellow) 20% 30%, rgba(255, 255, 255, 0) 30%);
}

.foot-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) repeat(3, minmax(0, 0.8fr));
  gap: clamp(1.4rem, 3vw, 2.6rem);
  padding-block: clamp(2.2rem, 5vw, 3.6rem);
}

.foot-brand .brand { margin-bottom: 1rem; }

.foot-statement {
  max-width: 34ch;
  margin: 0 0 1.2rem;
  font-size: 0.95rem;
  color: var(--text-soft);
}

.foot-contact {
  display: grid;
  gap: 0.4rem;
  font-style: normal;
}

.foot-contact__row {
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
  margin: 0;
  font-size: 0.86rem;
}

.foot-contact__key {
  flex: none;
  min-width: 3.2em;
  font-family: var(--font-num);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.foot-contact__value { color: var(--text-soft); word-break: break-word; }

.foot-contact a {
  color: var(--white);
  border-bottom: 1px dashed rgba(255, 255, 255, 0.28);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.foot-contact a:hover { color: var(--green); border-color: var(--green); }

.foot-contact__hint {
  margin: 0.4rem 0 0;
  font-size: 0.76rem;
  line-height: 1.7;
  color: var(--mist);
}

.foot-col__title {
  position: relative;
  margin: 0 0 0.9rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--white);
}

.foot-col__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 34px;
  height: 2px;
  background: var(--yellow);
}

.foot-list {
  display: grid;
  gap: 0.55rem;
}

.foot-list a {
  display: inline-block;
  font-size: 0.9rem;
  color: var(--text-soft);
  transition: color 0.2s ease, transform 0.2s ease-out;
}

.foot-list a:hover { color: var(--green); transform: translateX(3px); }

.foot-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem 1.4rem;
  padding-block: 1.15rem;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
}

.foot-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.1rem;
  margin: 0;
  color: var(--mist);
}

.foot-legal a {
  color: var(--mist);
  transition: color 0.2s ease;
}

.foot-legal a:hover { color: var(--white); }

.foot-note {
  max-width: 62ch;
  margin: 0;
  font-size: 0.78rem;
  color: var(--mist);
}

.foot-icp {
  display: inline-block;
  margin-left: 0.5rem;
  font-family: var(--font-num);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

/* ---------- 16. 平板 ---------- */
@media (max-width: 1279px) and (min-width: 1024px) {
  :root { --rail-w: 236px; }
  .nav__link { font-size: 0.94rem; }
  .brand__mark { width: 40px; height: 40px; border-radius: 11px; }
}

@media (max-width: 900px) {
  .grid--2,
  .grid--3,
  .grid--asym { grid-template-columns: minmax(0, 1fr); }

  .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 17. 移动端：顶条 + 抽屉 + 贴底战术板 ---------- */
@media (max-width: 1023px) {
  :root { --rail-w: 0px; }

  body {
    padding-left: 0;
    padding-top: var(--bar-h);
    padding-bottom: 82px;
  }

  .progress {
    top: calc(var(--bar-h) - 3px);
    left: 0;
    right: 0;
  }

  .rail {
    top: 0;
    left: 0;
    right: 0;
    bottom: auto;
    width: auto;
    height: var(--bar-h);
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
    padding: 0 0.9rem;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    overflow: visible;
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
  }

  .rail::after {
    top: auto;
    right: auto;
    bottom: -1px;
    left: 0;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--red) 0 26%, var(--yellow) 26% 40%, rgba(255, 255, 255, 0) 72%);
  }

  .rail__top {
    flex: 1 1 auto;
    width: 100%;
  }

  .brand__mark {
    width: 36px;
    height: 36px;
    border-radius: 10px;
  }

  .brand__mark-txt { font-size: 0.82rem; }
  .brand__name { font-size: 0.98rem; }
  .brand__sub { display: none; }

  .rail__toggle { display: inline-flex; }

  .rail__foot { display: none; }

  .nav {
    position: fixed;
    top: var(--bar-h);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 95;
    padding: 1.1rem 1.1rem 7rem;
    background: linear-gradient(180deg, #0E1729, #0B1220 58%, #0A101C);
    border-right: 0;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.25s ease-out, transform 0.3s ease-out, visibility 0.25s;
  }

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

  .nav__label { margin-left: 0.2rem; }

  .nav__link {
    padding: 0.85rem 0.35rem;
    border-left: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 0;
    font-size: 1.1rem;
  }

  .nav__link:hover { transform: translateX(3px); border-bottom-color: var(--yellow); }

  .nav__link[aria-current="page"] {
    background: linear-gradient(90deg, rgba(230, 25, 43, 0.24), rgba(230, 25, 43, 0));
    border-bottom-color: var(--red);
  }

  .nav__utility {
    margin-top: 1.3rem;
    padding-top: 1.2rem;
  }

  .nav__pill { padding: 0.8rem; font-size: 1rem; }

  .topbar {
    top: auto;
    bottom: 0;
    padding: 0.6rem 0.8rem calc(0.6rem + env(safe-area-inset-bottom, 0px));
    background: rgba(11, 18, 32, 0.92);
    border-top: 1px solid var(--line);
    border-bottom: 0;
    -webkit-backdrop-filter: blur(16px) saturate(130%);
    backdrop-filter: blur(16px) saturate(130%);
  }

  .topbar::after { display: none; }

  .topbar__status { display: none; }

  .topbar__actions {
    width: 100%;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 0.5rem;
  }

  .topbar .btn--ghost { display: none; }
  .topbar .btn { width: 100%; padding: 0.72rem 0.5rem; letter-spacing: 0.06em; }
}

/* ---------- 18. 小屏 ---------- */
@media (max-width: 620px) {
  body { font-size: 15.5px; }

  .foot-grid { grid-template-columns: minmax(0, 1fr); }

  .foot-bottom { flex-direction: column; align-items: flex-start; }

  .foot-icp { margin-left: 0; }

  .container { padding-inline: 1rem; }
}

/* ---------- 19. 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;
  }

  .has-js [data-reveal],
  .has-js [data-reveal].is-visible {
    opacity: 1;
    transform: none;
  }

  .live-dot { animation: none; box-shadow: 0 0 0 3px rgba(43, 227, 122, 0.25); }
}