/* ============================================================
   欢云体育 · 共享外壳样式 /assets/site.css
   轨道导航 + 档案面板 + 主客场色彩对位
   ============================================================ */

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

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

body {
  margin: 0;
  padding-left: var(--rail-w);
  background: var(--c-mist);
  color: var(--c-ink);
  font-family: var(--f-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; }
button { font: inherit; color: inherit; }
main { display: block; min-height: 46vh; }
[hidden] { display: none !important; }

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

[id] { scroll-margin-top: 24px; }

/* ---------- 2. 变量 ---------- */
:root {
  --c-green: #123B2E;
  --c-green-deep: #0B2A20;
  --c-mist: #DDE3DE;
  --c-paper: #F7F5F1;
  --c-home: #F2933C;
  --c-brand: #FF5A2B;
  --c-away: #2FA6A0;
  --c-ink: #101815;
  --c-line: #9BAAA3;
  --c-yellow: #FFD166;

  --f-heading: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --f-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --f-label: "Noto Sans SC Condensed", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --f-data: "IBM Plex Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --rail-w: 88px;
  --top-h: 56px;
  --maxw: 1240px;
  --gap: 24px;
  --ease: cubic-bezier(.2, .7, .1, 1);
}

/* ---------- 3. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  transform: translateY(-180%);
  padding: 10px 18px;
  background: var(--c-paper);
  color: var(--c-ink);
  border-left: 4px solid var(--c-brand);
  font-family: var(--f-label);
  font-size: 14px;
  letter-spacing: .06em;
  text-decoration: none;
  transition: transform 200ms var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 4. 轨道导航（桌面） ---------- */
.site-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 80;
  display: flex;
  flex-direction: column;
  background: var(--c-green);
  color: var(--c-paper);
  border-right: 1px solid var(--c-green-deep);
}

.site-rail__bar { display: none; }

.site-rail__panel {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  min-height: 0;
  padding: 20px 0 16px;
}

.site-rail__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 0 8px 18px;
  border-bottom: 1px solid rgba(247, 245, 241, .14);
}

.site-rail__wordmark {
  writing-mode: vertical-rl;
  font-family: var(--f-heading);
  font-size: 16px;
  font-weight: 900;
  letter-spacing: .16em;
  color: var(--c-paper);
  text-decoration: none;
}
.site-rail__wordmark:hover { color: var(--c-home); }

.site-rail__tagline {
  margin: 0;
  width: 64px;
  font-family: var(--f-label);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: .02em;
  text-align: center;
  color: var(--c-line);
  word-break: break-all;
}

.site-rail__nav {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 12px 0;
  scrollbar-width: none;
}
.site-rail__nav::-webkit-scrollbar { width: 0; }

.rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.rail-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  padding: 12px 4px;
  border-left: 2px solid transparent;
  color: var(--c-mist);
  text-decoration: none;
  transition: background 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
}
.rail-link:hover {
  background: var(--c-green-deep);
  color: var(--c-paper);
}

.rail-link__num {
  font-family: var(--f-data);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  line-height: 1;
  letter-spacing: .06em;
  color: var(--c-line);
  transition: color 200ms var(--ease);
}

.rail-link__label {
  writing-mode: vertical-rl;
  font-family: var(--f-label);
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: .16em;
}

.rail-link[aria-current="page"] {
  background: rgba(255, 90, 43, .14);
  border-left-color: var(--c-brand);
}
.rail-link[aria-current="page"] .rail-link__num { color: var(--c-brand); font-weight: 600; }
.rail-link[aria-current="page"] .rail-link__label { color: var(--c-yellow); font-weight: 600; }

.site-rail__actions {
  padding: 14px 8px 0;
  border-top: 1px solid rgba(247, 245, 241, .14);
}

.rail-cta {
  display: block;
  padding: 10px 4px;
  background: var(--c-brand);
  border: 1px solid var(--c-brand);
  color: var(--c-paper);
  font-family: var(--f-label);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  word-break: break-all;
  transition: background 200ms var(--ease), color 200ms var(--ease);
}
.rail-cta:hover {
  background: transparent;
  color: var(--c-brand);
}

.rail-progress {
  position: absolute;
  top: 0;
  right: 0;
  width: 2px;
  height: 100%;
  background: rgba(247, 245, 241, .1);
  pointer-events: none;
}
.rail-progress__bar {
  display: block;
  width: 100%;
  height: 0;
  background: var(--c-brand);
  transition: height 120ms linear;
}

/* ---------- 5. 通用容器与零件 ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.grid {
  display: grid;
  gap: var(--gap);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

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

.rule {
  border: 0;
  border-top: 1px solid var(--c-line);
  margin: 0;
}

.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.85;
}
.prose > * + * { margin-top: 1.05em; }
.prose h2 { font-size: 28px; line-height: 1.3; margin-top: 1.9em; }
.prose h3 { font-size: 22px; line-height: 1.35; margin-top: 1.6em; }
.prose ul,
.prose ol { padding-left: 1.35em; }
.prose li + li { margin-top: .4em; }

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

/* ---------- 6. 面包屑 ---------- */
.crumbs { padding: 26px 0 0; }
.crumbs__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--f-label);
  font-size: 13px;
  letter-spacing: .06em;
  color: #5C6B64;
}
.crumbs__item { display: flex; align-items: center; gap: 8px; }
.crumbs__item + .crumbs__item::before {
  content: "/";
  color: var(--c-line);
}
.crumbs__link { color: inherit; text-decoration: none; }
.crumbs__link:hover { color: var(--c-brand); }

/* ---------- 7. 面板 ---------- */
.panel {
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  padding: 28px 24px;
}
.panel--dark {
  background: var(--c-green);
  border-color: var(--c-green-deep);
  color: var(--c-paper);
}
.panel--mist {
  background: var(--c-mist);
  border-color: var(--c-line);
}
.panel--flush { padding: 0; }

.label {
  display: inline-block;
  font-family: var(--f-label);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--c-green);
}
.label--onDark { color: var(--c-home); }

.data-num {
  font-family: var(--f-data);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: .02em;
  white-space: nowrap;
  font-style: normal;
}

/* ---------- 8. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  color: var(--c-ink);
  font-family: var(--f-label);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .06em;
  line-height: 1.6;
  white-space: nowrap;
}
.tag--home { background: var(--c-home); border-color: var(--c-home); color: var(--c-ink); }
.tag--away { background: var(--c-away); border-color: var(--c-away); color: var(--c-paper); }
.tag--tech { background: var(--c-yellow); border-color: var(--c-yellow); color: var(--c-ink); }
.tag--youth { background: var(--c-paper); border-color: var(--c-green); color: var(--c-green); }
.tag--friendly { background: var(--c-green); border-color: var(--c-green); color: var(--c-paper); }

/* ---------- 9. 筛选按钮 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.filter-btn {
  padding: 8px 14px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  color: var(--c-green);
  font-family: var(--f-label);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}
.filter-btn:hover { border-color: var(--c-green); }
.filter-btn[aria-pressed="true"] {
  background: var(--c-yellow);
  border-color: var(--c-yellow);
  color: var(--c-ink);
  font-weight: 600;
}

/* ---------- 10. 按钮 ---------- */
.u-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  font-family: var(--f-label);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .08em;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: background 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
}
.u-btn--brand { background: var(--c-brand); border-color: var(--c-brand); color: var(--c-paper); }
.u-btn--brand:hover { background: var(--c-green); border-color: var(--c-green); color: var(--c-paper); }
.u-btn--solid { background: var(--c-green); border-color: var(--c-green); color: var(--c-paper); }
.u-btn--solid:hover { background: var(--c-green-deep); border-color: var(--c-green-deep); }
.u-btn--ghost { background: transparent; border-color: var(--c-line); color: var(--c-green); }
.u-btn--ghost:hover { border-color: var(--c-green); background: var(--c-paper); }
.u-btn--onDark { background: transparent; border-color: rgba(247, 245, 241, .4); color: var(--c-paper); }
.u-btn--onDark:hover { background: var(--c-paper); border-color: var(--c-paper); color: var(--c-green); }

/* ---------- 11. 图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  background: var(--c-green-deep);
  border: 1px solid var(--c-line);
}
.media-frame::after {
  content: "";
  display: block;
  padding-top: 62%;
}
.media-frame--wide::after { padding-top: 42%; }
.media-frame--tall::after { padding-top: 120%; }
.media-frame--square::after { padding-top: 100%; }

.media-frame__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 100%;
  padding: 8px 12px;
  background: rgba(11, 42, 32, .84);
  color: var(--c-paper);
  font-family: var(--f-label);
  font-size: 12px;
  letter-spacing: .06em;
  line-height: 1.6;
}

/* ---------- 12. 显现（仅 JS 可用时降级保护） ---------- */
.has-js [data-reveal] {
  transition: opacity 280ms var(--ease), transform 280ms var(--ease);
}
.has-js [data-reveal]:not([data-reveal="in"]) {
  opacity: 0;
  transform: translateY(12px);
}

/* ---------- 13. 页脚 ---------- */
.site-foot {
  margin-top: 96px;
  background: var(--c-green-deep);
  color: var(--c-mist);
  font-size: 15px;
}

.site-foot__grid {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 64px 24px 48px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.5fr;
  gap: 40px 32px;
}

.site-foot__brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.site-foot__logo {
  font-family: var(--f-heading);
  font-size: 24px;
  font-weight: 900;
  letter-spacing: .06em;
  line-height: 1.2;
  color: var(--c-paper);
  text-decoration: none;
}
.site-foot__logo:hover { color: var(--c-home); }

.site-foot__motto {
  margin: 0;
  max-width: 22em;
  color: var(--c-line);
  font-size: 14px;
  line-height: 1.85;
}

.foot-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 0;
}

.foot-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border: 1px solid currentColor;
  font-family: var(--f-label);
  font-size: 12px;
  letter-spacing: .06em;
  line-height: 1.6;
}
.foot-badge--home { color: var(--c-home); }
.foot-badge--away { color: var(--c-away); }

.site-foot__col {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.site-foot__col--contact { min-width: 0; }

.foot-head {
  margin: 0 0 18px;
  padding-top: 12px;
  border-top: 1px solid rgba(247, 245, 241, .22);
  font-family: var(--f-label);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--c-paper);
}

.foot-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.foot-list a {
  color: var(--c-mist);
  font-size: 15px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}
.foot-list a:hover {
  color: var(--c-home);
  border-bottom-color: var(--c-home);
}

.foot-list--plain li {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--c-line);
  font-size: 14px;
  line-height: 1.7;
}
.foot-list--plain li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--c-line);
}

.foot-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.foot-contact__row {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  font-size: 14px;
}
.foot-contact__row--stack { align-items: flex-start; }

.foot-contact__key {
  min-width: 64px;
  font-family: var(--f-label);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-line);
}

.foot-contact__val {
  color: var(--c-paper);
  font-family: var(--f-data);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  line-height: 1.7;
  word-break: break-all;
}
.foot-contact__row--stack .foot-contact__val {
  font-family: var(--f-body);
  font-size: 14px;
  line-height: 1.75;
}

.copy-btn {
  padding: 3px 10px;
  background: transparent;
  border: 1px solid var(--c-line);
  color: var(--c-mist);
  font-family: var(--f-label);
  font-size: 12px;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}
.copy-btn:hover {
  border-color: var(--c-home);
  color: var(--c-home);
}
.copy-btn[data-copied] {
  background: var(--c-brand);
  border-color: var(--c-brand);
  color: var(--c-paper);
}

.foot-note {
  margin: 14px 0 0;
  color: var(--c-line);
  font-size: 13px;
  line-height: 1.85;
}

.site-foot__base {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 20px 24px 24px;
  border-top: 1px solid var(--c-line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
}

.site-foot__base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 24px;
  font-size: 13px;
  color: var(--c-line);
}

.foot-legal-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.foot-legal-links a {
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}
.foot-legal-links a:hover {
  color: var(--c-home);
  border-bottom-color: var(--c-home);
}

.foot-icp,
.foot-copy {
  margin: 0;
  font-family: var(--f-data);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .02em;
}

.site-foot__mark {
  display: flex;
  align-items: center;
  gap: 6px;
}
.mark-chip {
  display: block;
  width: 14px;
  height: 14px;
}
.mark-chip--home { background: var(--c-home); }
.mark-chip--away { background: var(--c-away); }

/* ---------- 14. 移动端 / 抽屉 ---------- */
@media (max-width: 1023px) {
  body {
    padding-left: 0;
    padding-top: var(--top-h);
  }

  .site-rail {
    right: 0;
    bottom: auto;
    width: auto;
    height: var(--top-h);
    border-right: 0;
    border-bottom: 1px solid var(--c-green-deep);
  }

  .site-rail__bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    height: var(--top-h);
    padding: 0 14px;
  }

  .site-rail__mark {
    color: var(--c-paper);
    font-family: var(--f-heading);
    font-size: 17px;
    font-weight: 900;
    letter-spacing: .08em;
    text-decoration: none;
  }

  .site-rail__toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 40px;
    height: 36px;
    padding: 0 9px;
    background: transparent;
    border: 1px solid rgba(247, 245, 241, .32);
    cursor: pointer;
  }
  .toggle-bar {
    display: block;
    height: 1px;
    background: var(--c-paper);
    transition: transform 200ms var(--ease), opacity 160ms linear;
  }
  .site-rail__toggle[aria-expanded="true"] .toggle-bar:nth-child(1) { transform: translateY(5px) rotate(45deg); }
  .site-rail__toggle[aria-expanded="true"] .toggle-bar:nth-child(2) { opacity: 0; }
  .site-rail__toggle[aria-expanded="true"] .toggle-bar:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

  .site-rail__panel {
    display: none;
    position: absolute;
    top: var(--top-h);
    left: 0;
    right: 0;
    max-height: calc(100vh - var(--top-h));
    overflow-y: auto;
    padding: 16px 16px 24px;
    background: var(--c-green-deep);
    border-bottom: 1px solid var(--c-line);
  }
  .site-rail__panel[data-open] { display: block; }

  .site-rail__brand { display: none; }

  .site-rail__nav { overflow: visible; padding: 0; }
  .rail-list { gap: 0; }

  .rail-link {
    flex-direction: row;
    align-items: baseline;
    gap: 14px;
    padding: 13px 10px;
    border-left: 0;
    border-bottom: 1px solid rgba(247, 245, 241, .1);
  }
  .rail-link__num { min-width: 22px; }
  .rail-link__label {
    writing-mode: horizontal-tb;
    font-size: 15px;
    letter-spacing: .08em;
  }
  .rail-link[aria-current="page"] { border-bottom-color: rgba(255, 90, 43, .4); }

  .site-rail__actions {
    margin-top: 16px;
    padding: 0;
    border-top: 0;
  }
  .rail-cta { font-size: 14px; padding: 12px; }

  .rail-progress { display: none; }

  .site-foot { margin-top: 64px; }
  .site-foot__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px 24px;
    padding: 48px 20px 36px;
  }
  .site-foot__base { padding: 18px 20px 22px; }
}

/* ---------- 15. 小屏细化 ---------- */
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .panel { padding: 22px 18px; }
  .prose { font-size: 16px; }
  .prose h2 { font-size: 24px; }
  .prose h3 { font-size: 20px; }
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

  .site-foot__grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 40px 16px 28px;
  }
  .site-foot__base { padding: 18px 16px 22px; }
  .site-foot__base-inner { gap: 8px 18px; }
}

/* ---------- 16. 无障碍：减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .has-js [data-reveal]:not([data-reveal="in"]) {
    opacity: 1;
    transform: none;
  }
  .rail-progress__bar { transition: none; }
}