/* =========================================================
   博澳体育 · 共享样式表 /assets/site.css
   夜间赛场指挥台：深墨蓝底 · 精密网格 · 荧光青行动色
   ========================================================= */

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

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

body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, figcaption, blockquote, dl, dd { margin: 0; padding: 0; }

ul, ol { list-style: none; }

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

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

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

table { border-collapse: collapse; }

[id] { scroll-margin-top: calc(var(--header-h) + 20px); }

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩 */
  --ink: #0B1A2B;
  --ink-deep: #071320;
  --ink-2: #132A41;
  --grid: #2E3A44;
  --grid-soft: rgba(46, 58, 68, .42);
  --cyan: #22E1C8;
  --cyan-ink: #04211D;
  --cyan-dim: rgba(34, 225, 200, .14);
  --orange: #FF6B2C;
  --gold: #E8B75A;
  --moss: #8FAE85;
  --clay: #D98C6B;
  --paper: #F2EDE3;
  --mist: #93A3B0;

  /* 字体 */
  --font-display: "Arial Narrow", "Helvetica Neue Condensed", "Roboto Condensed",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
    system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "Cascadia Mono", Menlo, Consolas,
    "Courier New", monospace;
  --font-serif: "Songti SC", "Noto Serif SC", "SimSun", Georgia, "Times New Roman", serif;

  /* 尺度 */
  --wrap: 1360px;
  --gutter: clamp(1.1rem, 4vw, 2.5rem);
  --header-h: 68px;
  --line: 1px solid var(--grid);
  --hair: 1px solid var(--grid-soft);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background-color: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  padding-top: var(--header-h);
  min-height: 100vh;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: .015em;
  color: var(--paper);
  font-stretch: 88%;
}

h1 { font-size: clamp(1.9rem, 5.2vw, 3.4rem); }
h2 { font-size: clamp(1.4rem, 3.2vw, 2.1rem); }
h3 { font-size: clamp(1.1rem, 2.1vw, 1.42rem); }
h4 { font-size: clamp(1rem, 1.6vw, 1.14rem); letter-spacing: .05em; }

p { max-width: 40em; }

.lead {
  font-family: var(--font-serif);
  font-size: clamp(1.04rem, 1.8vw, 1.3rem);
  line-height: 1.9;
  color: var(--paper);
  max-width: 36em;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background-color: var(--cyan);
}

.rule { height: 1px; background-color: var(--grid); border: 0; }

/* ---------- 4. 焦点与可访问 ---------- */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

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

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 200;
  padding: .6rem 1.05rem;
  background-color: var(--cyan);
  color: var(--cyan-ink);
  font-weight: 700;
  font-size: .84rem;
  letter-spacing: .1em;
  transform: translateY(-260%);
  transition: transform .2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 5. 布局容器与网格 ---------- */
.wrap,
.site-header__inner,
.site-footer__inner {
  width: min(var(--wrap), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.page {
  width: min(var(--wrap), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.page--narrow { max-width: 920px; }

.section { padding-block: clamp(2.4rem, 6vw, 5rem); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.1rem;
  margin-bottom: 1.6rem;
  border-bottom: var(--line);
}

.grid {
  display: grid;
  gap: clamp(1rem, 2.2vw, 1.6rem);
  grid-template-columns: 1fr;
}

.grid--2,
.grid--3,
.grid--4 { grid-template-columns: 1fr; }

@media (min-width: 620px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1000px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.grid-bg {
  background-image:
    linear-gradient(var(--grid-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: center;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: .68rem 1.2rem;
  border: 1px solid transparent;
  border-radius: 0;
  font-family: var(--font-body);
  font-size: .86rem;
  font-weight: 600;
  letter-spacing: .1em;
  line-height: 1.2;
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}

.btn--sm { padding: .5rem .9rem; font-size: .78rem; letter-spacing: .12em; }

.btn--primary {
  background-color: var(--cyan);
  border-color: var(--cyan);
  color: var(--cyan-ink);
}
.btn--primary:hover { background-color: transparent; color: var(--cyan); }

.btn--ghost {
  background-color: transparent;
  border-color: var(--grid);
  color: var(--paper);
}
.btn--ghost:hover { border-color: var(--orange); color: var(--orange); }

.btn--gold {
  background-color: transparent;
  border-color: var(--gold);
  color: var(--gold);
}
.btn--gold:hover { background-color: var(--gold); color: #2A1D05; }

/* ---------- 7. 页头（框架式导航） ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  background-color: rgba(11, 26, 43, .97);
  border-bottom: 1px solid var(--grid);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.site-header::before {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan) 0%, rgba(34, 225, 200, .12) 52%, var(--orange) 100%);
}

.site-header__progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  transform: scaleX(0);
  transform-origin: 0 50%;
  will-change: transform;
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(.8rem, 2.4vw, 2rem);
  min-height: var(--header-h);
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: .7rem;
  flex: 0 0 auto;
}

.brand__mark {
  position: relative;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  border: 1px solid var(--cyan);
  background-color: var(--ink-2);
}

.brand__mark::before {
  content: "";
  position: absolute;
  inset: 6px;
  background-color: var(--cyan);
  transform: skewX(-14deg);
}

.brand__text { display: flex; flex-direction: column; }

.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.14rem;
  letter-spacing: .14em;
  line-height: 1.14;
  color: var(--paper);
}

.brand__tag {
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .16em;
  line-height: 1.4;
  color: var(--mist);
}

/* 移动端按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: .55rem;
  margin-left: auto;
  padding: .55rem .75rem;
  border: 1px solid var(--grid);
  border-radius: 0;
  color: var(--paper);
  font-size: .76rem;
  letter-spacing: .16em;
}

.nav-toggle__bar {
  position: relative;
  display: block;
  width: 16px;
  height: 1px;
  background-color: currentColor;
  transition: background-color .2s ease;
}

.nav-toggle__bar::before,
.nav-toggle__bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 1px;
  background-color: currentColor;
  transition: transform .2s ease, top .2s ease;
}

.nav-toggle__bar::before { top: -5px; }
.nav-toggle__bar::after { top: 5px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bar { background-color: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::after { top: 0; transform: rotate(-45deg); }

/* 导航 */
.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(.6rem, 2vw, 1.5rem);
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(.25rem, 1.4vw, 1rem);
}

.site-nav__list a {
  position: relative;
  display: block;
  padding: .55rem .35rem;
  font-size: .9rem;
  letter-spacing: .06em;
  color: var(--mist);
  transition: color .18s ease;
}

.site-nav__list a::after {
  content: "";
  position: absolute;
  left: .35rem;
  right: .35rem;
  bottom: .12rem;
  height: 2px;
  background-color: var(--cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .22s ease;
}

.site-nav__list a:hover { color: var(--paper); }
.site-nav__list a:hover::after { transform: scaleX(1); }

.site-nav__list a[aria-current="page"] { color: var(--cyan); }
.site-nav__list a[aria-current="page"]::after { transform: scaleX(1); }

.nav-drawer-head { display: none; }

.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 65;
  background-color: rgba(4, 10, 18, .66);
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s ease, visibility .25s ease;
}

.nav-scrim[data-visible] { opacity: 1; visibility: visible; }

/* ---------- 8. 页脚 ---------- */
.site-footer {
  margin-top: clamp(3rem, 7vw, 6rem);
  background-color: var(--ink-deep);
  border-top: 1px solid var(--grid);
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(320px, 42%);
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(34, 225, 200, 0));
}

.site-footer__inner {
  padding-block: clamp(2.2rem, 5vw, 3.6rem) 1.6rem;
}

.footer-grid {
  display: grid;
  gap: clamp(1.6rem, 3vw, 2.6rem);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1000px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr 1.7fr; }
}

.footer-brand__mark {
  display: block;
  width: 26px;
  height: 26px;
  margin-bottom: .9rem;
  border: 1px solid var(--cyan);
  background:
    linear-gradient(135deg, transparent 46%, var(--cyan) 46%, var(--cyan) 54%, transparent 54%);
  background-color: var(--ink-2);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: .16em;
  color: var(--paper);
  max-width: none;
}

.footer-brand__text {
  margin-top: .5rem;
  font-size: .88rem;
  color: var(--mist);
  max-width: 22em;
}

.footer-brand__note {
  margin-top: .9rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--grid);
  max-width: none;
  color: #4A5A66;
}

.footer-col__title {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: .9rem;
}

.footer-col__list { display: flex; flex-direction: column; gap: .45rem; }

.footer-col__list a {
  font-size: .88rem;
  color: var(--mist);
  transition: color .16s ease;
}

.footer-col__list a:hover { color: var(--paper); }

.footer-col__list--plain li {
  font-size: .84rem;
  line-height: 1.7;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.footer-col--contact { border-left: 0; }

@media (min-width: 1000px) {
  .footer-col--contact { border-left: var(--hair); padding-left: 1.4rem; }
}

.footer-note {
  margin-top: .9rem;
  font-size: .78rem;
  line-height: 1.7;
  color: var(--grid);
  color: #4A5A66;
  max-width: 34em;
}

.footer-legacy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: clamp(1.8rem, 4vw, 2.6rem);
  padding: 1.1rem 1.25rem;
  background-color: var(--ink-2);
  border: var(--line);
  border-left: 2px solid var(--clay);
}

.footer-legacy__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: .1em;
  color: var(--clay);
  max-width: none;
}

.footer-legacy__text {
  margin-top: .3rem;
  font-size: .82rem;
  color: var(--mist);
  max-width: 40em;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .8rem;
  margin-top: 1.6rem;
  padding-top: 1.2rem;
  border-top: var(--hair);
}

.footer-bottom__copy {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--mist);
  max-width: none;
}

.footer-bottom__links { display: flex; flex-wrap: wrap; gap: 1.2rem; }

.footer-bottom__links a {
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--mist);
  transition: color .16s ease;
}

.footer-bottom__links a:hover { color: var(--cyan); }

/* ---------- 9. 通用组件 ---------- */
.card {
  background-color: var(--ink-2);
  border: var(--line);
  border-radius: 0;
  padding: clamp(1.1rem, 2.4vw, 1.9rem);
}

.card--flat { background-color: transparent; }

.card__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  letter-spacing: .04em;
  color: var(--paper);
  margin-bottom: .6rem;
  max-width: none;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .18rem .6rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  line-height: 1.6;
}

.tag--cyan { color: var(--cyan); }
.tag--gold { color: var(--gold); }
.tag--orange { color: var(--orange); }
.tag--moss { color: var(--moss); }
.tag--clay { color: var(--clay); }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--mist);
  padding-block: 1.4rem 0;
}

.breadcrumb li { display: flex; align-items: center; }

.breadcrumb li + li::before {
  content: "/";
  margin-right: .5rem;
  color: var(--grid);
}

.breadcrumb a { color: var(--mist); transition: color .16s ease; }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb [aria-current="page"] { color: var(--paper); }

.stat { display: flex; flex-direction: column; gap: .35rem; }

.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  line-height: 1.05;
  color: var(--gold);
}

.stat__label {
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--mist);
}

.table-scroll { overflow-x: auto; }

.data-table {
  width: 100%;
  min-width: 520px;
  font-size: .9rem;
}

.data-table caption {
  caption-side: top;
  text-align: left;
  padding-bottom: .7rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--mist);
}

.data-table th,
.data-table td {
  padding: .82rem .9rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--grid);
}

.data-table thead th {
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
  border-bottom: 1px solid var(--cyan);
}

.data-table tbody th {
  font-weight: 600;
  color: var(--paper);
}

.data-table td { color: var(--mist); }

.data-table .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--gold);
  white-space: nowrap;
}

/* ---------- 10. 图片容器 ---------- */
.media {
  position: relative;
  overflow: hidden;
  background-color: var(--ink-2);
  border: var(--line);
}

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

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

.media--placeholder {
  background-image:
    linear-gradient(var(--grid-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-soft) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: center;
}

.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: .7rem .9rem;
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--paper);
  background: linear-gradient(180deg, rgba(11, 26, 43, 0), rgba(11, 26, 43, .94));
}

/* ---------- 11. 动效协议 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .55s ease, transform .55s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-parallax] { will-change: transform; }

/* ---------- 12. 移动端抽屉 ---------- */
@media (max-width: 900px) {
  :root { --header-h: 64px; }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 70;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-left: 0;
    max-height: 84vh;
    overflow-y: auto;
    padding: 1rem var(--gutter) calc(1.5rem + env(safe-area-inset-bottom, 0px));
    background-color: var(--ink-2);
    border-top: 2px solid var(--cyan);
    transform: translateY(105%);
    transition: transform .28s cubic-bezier(.4, 0, .2, 1);
  }

  .site-nav[data-open] { transform: translateY(0); }

  .nav-drawer-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    padding-bottom: .9rem;
    margin-bottom: .6rem;
    border-bottom: 1px solid var(--grid);
  }

  .nav-drawer-head__label {
    font-family: var(--font-mono);
    font-size: .66rem;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--mist);
  }

  .nav-drawer-head__value {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1rem;
    letter-spacing: .08em;
    color: var(--cyan);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__list a {
    padding: .85rem .1rem;
    font-size: .98rem;
    color: var(--paper);
    border-bottom: 1px solid var(--grid);
  }

  .site-nav__list a::after {
    left: 0;
    right: auto;
    bottom: -.5px;
    width: 46px;
  }

  .site-nav__cta {
    margin-top: 1.2rem;
    width: 100%;
    padding-block: .8rem;
  }
}

@media (min-width: 901px) {
  .nav-scrim { display: none; }
}

/* ---------- 13. 全局减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  [data-parallax] { transform: none !important; }
}