/* ============================================================
   博奥赛场 · /assets/site.css
   赛场夜灯数据指挥舱 · 共享外壳与基础组件
   ============================================================ */

/* ---------- 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, li, figure, blockquote, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, picture, svg, video { display: block; max-width: 100%; }
table { width: 100%; border-collapse: collapse; }
[hidden] { display: none !important; }
[id] { scroll-margin-top: 128px; }

/* ---------- 2. 变量 ---------- */
:root {
  --deep: #061A2E;
  --night: #0C2C4A;
  --abyss: #04121F;
  --cyan: #22E7D6;
  --cyan-soft: rgba(34, 231, 214, .12);
  --mist: #A8F3EC;
  --live: #FF3B3B;
  --gold: #F2B94B;
  --stone: #5A6B78;
  --paper: #F5F1E8;
  --moss: #6E8F6A;
  --clay: #C4623F;

  --ink: #E4F1F6;
  --ink-soft: rgba(214, 234, 242, .74);
  --ink-faint: rgba(190, 214, 226, .54);
  --rule: rgba(168, 243, 236, .18);
  --rule-soft: rgba(168, 243, 236, .09);

  --font-head: "Arial Narrow", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-num: "SFMono-Regular", "JetBrains Mono", "Roboto Mono", Consolas, "Courier New", monospace;
}

/* ---------- 3. 基座与中文排版 ---------- */
body {
  min-height: 100vh;
  background:
    radial-gradient(900px 520px at 88% -10%, rgba(34, 231, 214, .12), transparent 62%),
    radial-gradient(720px 480px at 4% 10%, rgba(12, 44, 74, .95), transparent 72%),
    var(--deep);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  letter-spacing: .01em;
  word-break: break-word;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 800;
  font-stretch: condensed;
  letter-spacing: -.02em;
  line-height: 1.14;
  color: var(--paper);
}
h1 { font-size: clamp(38px, 6vw, 72px); }
h2 { font-size: clamp(26px, 3.4vw, 44px); }
h3 { font-size: clamp(20px, 2vw, 28px); }
h4 { font-size: 17px; letter-spacing: .02em; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 2px;
}
.btn--solid:focus-visible { outline-color: var(--gold); }

/* ---------- 4. 布局容器 ---------- */
.shell { width: min(100% - 40px, 1240px); margin-inline: auto; }

.section { position: relative; padding-block: clamp(44px, 7vw, 96px); }
.section--night { background: var(--night); border-block: 1px solid var(--rule); }
.section--deep { background: var(--abyss); border-block: 1px solid var(--rule-soft); }
.section__eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  margin-bottom: 14px;
  font-family: var(--font-num);
  font-size: 12px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--cyan);
}
.section__eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--cyan); }
.section__title { max-width: 26ch; }
.section__lead { margin-top: 16px; max-width: 38em; color: var(--ink-soft); font-size: 16px; }

.grid-12 { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: clamp(16px, 2vw, 28px); }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-12 { grid-column: span 12; }

.prose { max-width: 40em; color: var(--ink-soft); }
.prose p + p { margin-top: 1.1em; }
.prose h2, .prose h3 { margin: 1.6em 0 .6em; }
.prose strong { color: var(--paper); }
.prose a { color: var(--cyan); border-bottom: 1px solid rgba(34, 231, 214, .4); }

/* ---------- 5. Skip link ---------- */
.skip-link {
  position: absolute; left: 16px; top: -72px; z-index: 200;
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 18px;
  background: var(--cyan); color: #04141F;
  font-size: 14px; font-weight: 700; letter-spacing: .04em;
  transition: top .18s ease;
}
.skip-link:focus { top: 12px; }

/* ---------- 6. 页首：信息带 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 90;
  background: rgba(6, 26, 46, .95);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
  transition: box-shadow .25s ease;
}
.site-header.is-compact { box-shadow: 0 16px 34px rgba(0, 0, 0, .45); }

.ticker {
  background: linear-gradient(90deg, rgba(34, 231, 214, .12), rgba(12, 44, 74, .55) 48%, rgba(12, 44, 74, 0));
  border-bottom: 1px solid var(--rule-soft);
}
.ticker__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  min-height: 44px; padding-block: 4px;
  transition: min-height .25s ease;
}
.site-header.is-compact .ticker__inner { min-height: 36px; padding-block: 0; }
.ticker__fee { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 14px; min-width: 0; font-size: 13px; }
.ticker__key { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); }
.ticker__val { font-family: var(--font-num); font-weight: 600; letter-spacing: .02em; color: var(--gold); }
.ticker__note { font-size: 12px; color: var(--stone); }
.site-header.is-compact .ticker__note { display: none; }
.ticker__side { display: flex; align-items: center; gap: 10px; }
.ticker__link {
  display: inline-flex; align-items: center; align-self: stretch; margin-block: 5px;
  padding: 0 12px;
  border: 1px solid rgba(34, 231, 214, .45); border-radius: 2px;
  color: var(--cyan); font-size: 12px; letter-spacing: .06em; white-space: nowrap;
  transition: background .18s ease, border-color .18s ease;
}
.ticker__link:hover { background: rgba(34, 231, 214, .16); border-color: var(--cyan); }

/* ---------- 7. 页首：命令栏 ---------- */
.cmdbar__inner {
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 18px;
  padding-block: 12px;
}
.brand { display: flex; align-items: center; gap: 12px; min-height: 44px; }
.brand__mark {
  flex: none; width: 14px; height: 28px;
  background: linear-gradient(180deg, var(--cyan), var(--clay));
  transform: skewX(-12deg);
  box-shadow: 0 0 20px rgba(34, 231, 214, .45);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.12; }
.brand__name { font-family: var(--font-head); font-weight: 800; font-size: 21px; letter-spacing: .02em; color: var(--paper); }
.brand__sub { font-size: 11px; letter-spacing: .2em; color: var(--mist); opacity: .72; }

.nav-toggle { display: none; }
.primary-nav__list { display: flex; align-items: center; justify-content: center; gap: 2px; }
.primary-nav__link {
  position: relative;
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 13px;
  border-left: 2px solid transparent;
  font-size: 13px; font-weight: 600; letter-spacing: .06em; white-space: nowrap;
  color: var(--ink-soft);
  transition: color .18s ease, background .18s ease;
}
.primary-nav__link:hover { color: var(--cyan); background: rgba(34, 231, 214, .08); }
.primary-nav__link[aria-current="page"] {
  background: var(--cyan); color: #04141F;
  box-shadow: inset 3px 0 0 0 #04141F;
}

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

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 16px;
  border: 1px solid transparent; border-radius: 2px;
  font-size: 13px; font-weight: 700; letter-spacing: .06em; white-space: nowrap;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}
.btn--solid { background: var(--cyan); border-color: var(--cyan); color: #04141F; }
.btn--solid:hover { background: #7DF6EC; border-color: #7DF6EC; }
.btn--ghost { border-color: rgba(168, 243, 236, .38); color: var(--mist); }
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(34, 231, 214, .08); }
.btn--gold { border-color: rgba(242, 185, 75, .55); color: var(--gold); }
.btn--gold:hover { background: rgba(242, 185, 75, .14); }

/* ---------- 9. 阅读进度荧光线 ---------- */
.progress-rail {
  position: absolute; left: 0; right: 0; bottom: -1px; height: 2px;
  background: rgba(34, 231, 214, .1); overflow: hidden; pointer-events: none;
}
.progress-rail__fill {
  display: block; width: 100%; height: 100%;
  transform: scaleX(0); transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
  transition: transform .12s linear;
}

/* ---------- 10. 页脚 ---------- */
.site-footer {
  position: relative; overflow: hidden;
  padding-block: clamp(40px, 6vw, 72px) 24px;
  background: linear-gradient(180deg, var(--night), var(--abyss) 88%);
  border-top: 1px solid var(--rule);
}
.site-footer::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--gold) 55%, var(--clay));
  opacity: .85;
}
.footer__glow {
  position: absolute; right: -12%; top: -45%;
  width: 520px; height: 520px; pointer-events: none;
  background: radial-gradient(circle, rgba(34, 231, 214, .16), transparent 62%);
}
.footer__inner { position: relative; }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 34px; }
.footer__brandname { font-family: var(--font-head); font-weight: 800; font-size: 30px; letter-spacing: .01em; color: var(--paper); }
.footer__tagline { margin-top: 12px; max-width: 30ch; font-size: 15px; color: var(--ink-soft); }
.footer__note { margin-top: 14px; max-width: 32ch; font-size: 12.5px; line-height: 1.75; color: var(--stone); }
.footer__coltitle {
  margin-bottom: 16px;
  font-family: var(--font-num); font-size: 12px; font-weight: 600;
  letter-spacing: .18em; text-transform: uppercase; color: var(--cyan);
}
.footer__links li + li { margin-top: 2px; }
.footer__links a {
  display: inline-flex; align-items: center; min-height: 38px;
  font-size: 14.5px; color: var(--ink-soft);
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.footer__links a:hover { color: var(--cyan); border-bottom-color: rgba(34, 231, 214, .45); }
.footer__contactlist li {
  display: flex; flex-direction: column; gap: 3px;
  padding: 10px 0; border-bottom: 1px solid var(--rule-soft);
}
.footer__contactlist li:first-child { padding-top: 0; }
.footer__label { font-size: 11.5px; letter-spacing: .14em; color: var(--stone); }
.footer__value { font-size: 14.5px; color: var(--ink); }
.footer__value--mono { font-family: var(--font-num); letter-spacing: .01em; }

.footer__bottom {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 24px;
  margin-top: 40px; padding-top: 18px;
  border-top: 1px solid var(--rule);
}
.footer__region { font-size: 12.5px; letter-spacing: .02em; color: var(--stone); }
.footer__legal { font-family: var(--font-num); font-size: 12.5px; color: var(--stone); }

/* ---------- 11. 面包屑 ---------- */
.breadcrumbs { padding-block: 14px; border-bottom: 1px solid var(--rule-soft); }
.breadcrumbs__list { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 12.5px; letter-spacing: .05em; color: var(--stone); }
.breadcrumbs__item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumbs__item + .breadcrumbs__item::before { content: "/"; color: var(--rule); }
.breadcrumbs__link { color: var(--mist); }
.breadcrumbs__link:hover { color: var(--cyan); }
.breadcrumbs__item[aria-current="page"] { color: var(--cyan); }

/* ---------- 12. 标签与数字 ---------- */
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 9px; border-radius: 2px; border: 1px solid var(--rule);
  background: rgba(168, 243, 236, .07);
  font-size: 12px; letter-spacing: .09em; line-height: 1.6;
  color: var(--mist);
}
.tag--clay { background: rgba(196, 98, 63, .26); border-color: rgba(196, 98, 63, .62); color: #F8DCD0; }
.tag--gold { background: rgba(242, 185, 75, .18); border-color: rgba(242, 185, 75, .6); color: var(--gold); }
.tag--moss { background: rgba(110, 143, 106, .24); border-color: rgba(110, 143, 106, .65); color: #D6E5D2; }
.tag--live { background: var(--live); border-color: var(--live); color: #FFFFFF; font-weight: 700; }
.tag--cyan { background: var(--cyan); border-color: var(--cyan); color: #04141F; font-weight: 700; }

.num { font-family: var(--font-num); font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.num--xl { font-size: clamp(72px, 11vw, 180px); line-height: .86; font-weight: 700; color: var(--paper); }

/* ---------- 13. 米白纸张层（印刷叠层） ---------- */
.paper {
  position: relative;
  padding: clamp(20px, 3vw, 34px);
  background: var(--paper); color: #1B2C36;
  border-top: 3px solid var(--clay);
  box-shadow:
    6px 6px 0 -1px rgba(245, 241, 232, .14),
    12px 12px 0 -2px rgba(245, 241, 232, .06),
    0 24px 46px rgba(0, 0, 0, .42);
}
.paper h2, .paper h3, .paper h4 { color: #0C2C4A; }
.paper p, .paper li { color: #3B4D58; }
.paper .num { color: #0C2C4A; }
.paper .tag { background: rgba(12, 44, 74, .06); border-color: rgba(12, 44, 74, .22); color: #33454F; }
.paper .tag--gold { background: rgba(242, 185, 75, .3); border-color: rgba(196, 145, 40, .55); color: #6B4A08; }
.paper .tag--clay { background: rgba(196, 98, 63, .18); border-color: rgba(196, 98, 63, .5); color: #7A3419; }
.paper .tag--moss { background: rgba(110, 143, 106, .2); border-color: rgba(110, 143, 106, .55); color: #3A5237; }

/* ---------- 14. 媒体画框（供页面阶段放图） ---------- */
.media-frame {
  position: relative; overflow: hidden;
  width: 100%;
  background:
    radial-gradient(120% 90% at 20% 0%, rgba(34, 231, 214, .18), transparent 55%),
    linear-gradient(160deg, var(--night), var(--abyss) 72%);
  border: 1px solid var(--rule);
}
.media-frame::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, rgba(6, 26, 46, 0) 35%, rgba(6, 26, 46, .6));
}
.media-frame > img { width: 100%; height: 100%; object-fit: cover; }
.media-frame--hero { aspect-ratio: 21 / 9; }
.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

/* ---------- 15. 筛选芯片 ---------- */
.chip-group { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 44px; padding: 0 14px;
  border: 1px solid rgba(168, 243, 236, .28); border-radius: 2px;
  background: rgba(12, 44, 74, .55);
  font-size: 13px; letter-spacing: .05em; color: var(--ink-soft);
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}
.chip:hover { border-color: var(--cyan); color: var(--cyan); }
.chip[aria-pressed="true"] { background: var(--cyan); border-color: var(--cyan); color: #04141F; font-weight: 700; }
.chip__count { padding-left: 8px; border-left: 1px solid currentColor; font-family: var(--font-num); font-size: 12px; opacity: .78; }
[data-filter-item].is-filtered { display: none; }

/* ---------- 16. 纵向时间轴 ---------- */
.rail { position: relative; padding-left: 26px; }
.rail::before {
  content: ""; position: absolute; left: 6px; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(34, 231, 214, .1));
}
.rail__item { position: relative; padding: 14px 0; border-bottom: 1px dashed var(--rule-soft); }
.rail__item::before {
  content: ""; position: absolute; left: -25px; top: 22px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--deep); border: 2px solid var(--cyan);
  box-shadow: 0 0 12px rgba(34, 231, 214, .6);
}
.rail__item[data-state="live"]::before { background: var(--live); border-color: var(--live); box-shadow: 0 0 14px rgba(255, 59, 59, .7); }
.rail__item[data-state="done"]::before { background: var(--moss); border-color: var(--moss); box-shadow: none; }

/* ---------- 17. 倒计时 ---------- */
.countdown { display: inline-flex; align-items: baseline; gap: 10px; color: var(--cyan); }
.countdown__value { font-family: var(--font-num); font-variant-numeric: tabular-nums; font-size: clamp(28px, 4vw, 44px); font-weight: 700; letter-spacing: .02em; }
.countdown__label { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-faint); }
.countdown.is-final { color: var(--live); }
.countdown.is-final .countdown__value { animation: countdown-pulse 1s steps(2, end) infinite; }
@keyframes countdown-pulse { 50% { opacity: .35; } }

/* ---------- 18. 显现动效 ---------- */
.has-js [data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity .5s ease, transform .5s ease; }
.has-js [data-reveal].is-revealed { opacity: 1; transform: none; }

/* ---------- 19. 响应式：平板 ---------- */
@media (max-width: 1080px) {
  .cmdbar__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; padding-block: 10px; }
  .brand { order: 1; }
  .nav-toggle {
    order: 2; display: inline-flex; align-items: center; gap: 10px;
    min-height: 44px; min-width: 44px; padding: 0 14px;
    border: 1px solid rgba(168, 243, 236, .32); border-radius: 2px;
    color: var(--mist); font-size: 12px; letter-spacing: .1em;
  }
  .nav-toggle__bars { position: relative; display: block; width: 18px; height: 2px; background: var(--cyan); }
  .nav-toggle__bars::before, .nav-toggle__bars::after {
    content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--cyan);
    transition: transform .18s ease, top .18s ease;
  }
  .nav-toggle__bars::before { top: -6px; }
  .nav-toggle__bars::after { top: 6px; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

  .primary-nav {
    order: 4; flex: 1 0 100%; display: none;
    margin-top: 4px; padding-top: 4px;
    border-top: 1px solid var(--rule-soft);
  }
  .primary-nav[data-open] { display: block; }
  .primary-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .primary-nav__link {
    min-height: 48px; padding-inline: 16px;
    border-left: 3px solid transparent; border-bottom: 1px solid var(--rule-soft);
  }
  .primary-nav__link[aria-current="page"] { box-shadow: inset 3px 0 0 0 #04141F; }

  .cmdbar__cta { order: 3; flex: 1 1 auto; justify-content: flex-end; gap: 8px; }
  .cmdbar__cta .btn { min-height: 40px; padding: 0 12px; font-size: 12px; }

  .footer__grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .span-4, .span-5 { grid-column: span 6; }
  .span-6, .span-7, .span-8 { grid-column: span 12; }
}

/* ---------- 20. 响应式：手机 ---------- */
@media (max-width: 640px) {
  .shell { width: min(100% - 28px, 1240px); }
  .ticker__note { display: none; }
  .ticker__key { font-size: 11px; }
  .ticker__link { font-size: 11px; padding: 0 9px; }
  .ticker__inner { gap: 8px; }
  .brand__sub { display: none; }
  .span-4, .span-5, .span-6, .span-7, .span-8 { grid-column: span 12; }
  .footer__grid { grid-template-columns: 1fr; gap: 24px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 520px) {
  .nav-toggle__label { display: none; }
  .cmdbar__cta { order: 4; flex: 1 0 100%; justify-content: stretch; padding-bottom: 6px; }
  .cmdbar__cta .btn { flex: 1 1 0; min-width: 0; padding: 0 8px; }
}

/* ---------- 21. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .has-js [data-reveal] { opacity: 1; transform: none; }
  .progress-rail__fill { transition: none; }
}