/* =========================================================
   博万体育 · 共享站点样式 /assets/site.css
   赛前更衣室战术板 × 数据机房
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
}

body,
h1, h2, h3, h4, h5, p, ul, ol, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink-green: #0B2A22;
  --charcoal: #15171A;
  --sand: #E9DFC9;
  --lime: #C8F53F;
  --moss: #24513F;
  --ember: #C05A2C;
  --mist: #F4F1E7;
  --data-gray: #8E968A;
  --brown: #2A211A;
  --ice: #7FE3C4;

  --wrap: 1280px;
  --gutter: clamp(1rem, 3vw, 2.5rem);
  --shadow-hard: 6px 6px 0 var(--brown);
  --border: 2px solid var(--brown);

  --font-display: "Archivo Narrow", "Oswald", "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", Georgia, "Songti SC", serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --ease: cubic-bezier(.2, .6, .2, 1);
}

/* ---------- 3. Base ---------- */
body {
  background-color: var(--ink-green);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.012em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.25rem, 6vw, 5.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-family: var(--font-body); font-weight: 700; font-size: clamp(1.1rem, 2vw, 1.45rem); line-height: 1.35; }
h4 { font-family: var(--font-mono); font-weight: 700; font-size: .95rem; letter-spacing: .06em; }

p { text-wrap: pretty; }
strong { font-weight: 700; color: var(--mist); }

::selection { background: var(--lime); color: var(--ink-green); }

:focus-visible {
  outline: 3px solid var(--lime);
  outline-offset: 3px;
}

/* ---------- 4. Utilities ---------- */
.wrap {
  width: min(100% - (var(--gutter) * 2), var(--wrap));
  margin-inline: auto;
}

.section { padding-block: clamp(2.75rem, 6vw, 5.5rem); }
.section--tight { padding-block: clamp(1.75rem, 4vw, 3rem); }
.section--sand { background-color: var(--sand); color: var(--ink-green); }
.section--sand strong { color: var(--ink-green); }
.section--charcoal { background-color: var(--charcoal); }

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--lime);
}
.section--sand .eyebrow { color: var(--ember); }

.rule {
  height: 2px;
  border: 0;
  background-color: var(--brown);
  opacity: .35;
}

.section-head {
  display: grid;
  gap: .55rem;
  max-width: 66ch;
  margin-bottom: clamp(1.5rem, 3.5vw, 2.75rem);
}
.section-head__eyebrow {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--lime);
}
.section-head__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 4vw, 2.9rem);
  line-height: 1.05;
  letter-spacing: -.012em;
}
.section-head__note {
  max-width: 58ch;
  font-size: .95rem;
  line-height: 1.7;
  color: var(--data-gray);
}
.section--sand .section-head__eyebrow { color: var(--ember); }
.section--sand .section-head__note { color: #4A5A52; }

/* ---------- 5. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .85rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid var(--brown);
  border-radius: 0;
  box-shadow: var(--shadow-hard);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease),
              background-color .2s var(--ease), color .2s var(--ease),
              border-color .2s var(--ease);
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 9px 9px 0 var(--brown); }
.btn:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--brown); }

.btn--primary {
  background-color: var(--lime);
  color: var(--ink-green);
  border-color: var(--ink-green);
}
.btn--primary:hover { background-color: var(--ice); }

.btn--ghost {
  background-color: transparent;
  color: var(--mist);
  border-color: var(--mist);
}
.btn--ghost:hover { background-color: var(--mist); color: var(--ink-green); }
.section--sand .btn--ghost { color: var(--ink-green); border-color: var(--ink-green); }
.section--sand .btn--ghost:hover { background-color: var(--ink-green); color: var(--sand); }

/* ---------- 6. Tags ---------- */
.tag {
  display: inline-block;
  padding: .3rem .55rem;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  border: 1px solid currentColor;
  border-radius: 0;
  white-space: nowrap;
}
.tag--lime { background-color: var(--lime); color: var(--ink-green); border-color: var(--ink-green); }
.tag--moss { background-color: var(--moss); color: var(--mist); border-color: var(--moss); }
.tag--ember { background-color: var(--ember); color: var(--mist); border-color: var(--ember); }

/* ---------- 7. Cards / Panels ---------- */
.card {
  position: relative;
  padding: 1.4rem 1.4rem 1.6rem;
  background-color: var(--charcoal);
  border: var(--border);
  border-radius: 0;
  box-shadow: var(--shadow-hard);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
}
.card:hover { transform: translate(-2px, -2px); box-shadow: 9px 9px 0 var(--brown); border-color: var(--lime); }
.card__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--lime);
}
.card__title {
  margin-block: .5rem .45rem;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.18rem;
  line-height: 1.4;
}
.card__text { font-size: .92rem; line-height: 1.7; color: var(--sand); }

.section--sand .card { background-color: var(--mist); color: var(--ink-green); }
.section--sand .card__index { color: var(--ember); }
.section--sand .card__text { color: #45554D; }
.section--sand .card:hover { border-color: var(--ink-green); }

.panel {
  padding: 1.2rem 1.35rem;
  background-color: var(--charcoal);
  border: var(--border);
  border-left: 8px solid var(--lime);
  border-radius: 0;
  font-size: .95rem;
  line-height: 1.7;
}
.panel--sand { background-color: var(--sand); color: var(--ink-green); border-left-color: var(--ember); }

/* ---------- 8. Data blocks ---------- */
.stat { border-top: 3px solid var(--lime); padding-top: .7rem; }
.stat__value {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: .94;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  color: var(--mist);
}
.stat__label {
  display: block;
  margin-top: .45rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--data-gray);
}
.section--sand .stat { border-top-color: var(--ember); }
.section--sand .stat__value { color: var(--ink-green); }
.section--sand .stat__label { color: #5A6A61; }

.data-list { border-top: 2px solid var(--brown); }
.data-list__row {
  display: grid;
  grid-template-columns: minmax(96px, .55fr) 1fr;
  gap: 1rem;
  padding-block: .7rem;
  border-bottom: 1px solid rgba(142, 150, 138, .28);
}
.data-list__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--data-gray);
}
.data-list__value {
  font-family: var(--font-mono);
  font-size: .92rem;
  font-variant-numeric: tabular-nums;
  word-break: break-word;
}

/* ---------- 9. Breadcrumbs ---------- */
.breadcrumbs { padding-block: 1.1rem; }
.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--data-gray);
}
.breadcrumbs__link {
  color: var(--sand);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.breadcrumbs__link:hover { color: var(--lime); border-bottom-color: var(--lime); }
.breadcrumbs__sep { color: var(--moss); }
.breadcrumbs__item--current { color: var(--lime); }

/* ---------- 10. Media frames ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: var(--border);
  border-radius: 0;
  background-color: var(--moss);
  box-shadow: var(--shadow-hard);
  aspect-ratio: 16 / 9;
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.92) contrast(1.06);
}
.media-frame__label {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: .35rem .6rem;
  background-color: var(--lime);
  color: var(--ink-green);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

/* ---------- 11. Layout helpers ---------- */
.layout-split {
  display: grid;
  grid-template-columns: minmax(200px, 28%) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
}
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1rem, 2.5vw, 1.75rem); }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1rem, 2.5vw, 1.75rem); }
.stack { display: grid; gap: 1rem; }
.stack--lg { gap: 1.75rem; }

/* ---------- 12. Skip link ---------- */
.skip-link {
  position: absolute;
  top: -120px;
  left: 1rem;
  z-index: 300;
  padding: .7rem 1rem;
  background-color: var(--lime);
  color: var(--ink-green);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .1em;
  text-decoration: none;
  border: 2px solid var(--brown);
  box-shadow: 4px 4px 0 var(--brown);
  transition: top .2s var(--ease);
}
.skip-link:focus { top: .7rem; }

/* ---------- 13. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background-color: var(--charcoal);
  border-bottom: 2px solid var(--brown);
}
.site-header::before {
  content: "";
  display: block;
  height: 4px;
  background-color: var(--lime);
}

.header-inner {
  width: min(100% - (var(--gutter) * 2), var(--wrap));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 74px;
}

.brand { flex: 0 0 auto; }
.brand__link {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding-block: .55rem;
  text-decoration: none;
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  background-color: var(--lime);
  color: var(--ink-green);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: .02em;
  border: 2px solid var(--brown);
  box-shadow: 3px 3px 0 var(--moss);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.brand__link:hover .brand__mark { transform: translate(-1px, -1px); box-shadow: 5px 5px 0 var(--moss); }
.brand__text { display: flex; flex-direction: column; gap: .18rem; line-height: 1.1; }
.brand__name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.12rem;
  letter-spacing: .16em;
  color: var(--mist);
}
.brand__tagline {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .07em;
  color: var(--data-gray);
  white-space: nowrap;
}

/* nav */
.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(.4rem, 1.2vw, 1.1rem);
  min-width: 0;
}
.site-nav__list { display: flex; align-items: center; gap: .1rem; flex-wrap: nowrap; }
.site-nav__item { display: flex; }
.site-nav__link {
  display: block;
  padding: .5rem .68rem;
  font-size: .92rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--sand);
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: 0;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}
.site-nav__link:hover { color: var(--lime); border-color: var(--moss); }
.site-nav__link[aria-current="page"] {
  background-color: var(--lime);
  color: var(--ink-green);
  border-color: var(--lime);
  box-shadow: 4px 4px 0 var(--moss);
}
.site-nav__cta {
  margin-left: .35rem;
  padding: .6rem 1rem;
  font-size: 11.5px;
  white-space: nowrap;
}

/* toggle */
.nav-toggle {
  display: none;
  align-items: center;
  gap: .55rem;
  padding: .55rem .75rem;
  color: var(--lime);
  background-color: transparent;
  border: 2px solid var(--lime);
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  transition: background-color .18s var(--ease), color .18s var(--ease);
}
.nav-toggle:hover { background-color: rgba(200, 245, 63, .12); }
.nav-toggle__bars { display: flex; flex-direction: column; gap: 3px; width: 18px; }
.nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: currentColor;
  transition: transform .2s var(--ease), opacity .16s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle__label { white-space: nowrap; }

/* scroll progress */
.scroll-progress {
  display: block;
  height: 3px;
  background-color: rgba(36, 81, 63, .85);
  overflow: hidden;
}
.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  background-color: var(--lime);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .12s linear;
}

/* ---------- 14. Footer ---------- */
.site-footer {
  margin-top: auto;
  background-color: var(--charcoal);
  color: var(--sand);
  border-top: 3px solid var(--lime);
  padding-block: clamp(2.5rem, 5vw, 3.75rem) 0;
}
.footer-inner {
  width: min(100% - (var(--gutter) * 2), var(--wrap));
  margin-inline: auto;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr .8fr .8fr .8fr 1.2fr;
  gap: 2rem 1.75rem;
  padding-bottom: clamp(1.75rem, 3vw, 2.5rem);
  border-bottom: 1px solid rgba(233, 223, 201, .18);
}

.footer-brand { display: grid; gap: .75rem; align-content: start; }
.footer-brand__head { display: flex; align-items: center; gap: .65rem; }
.footer-brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background-color: var(--lime);
  color: var(--ink-green);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: .9rem;
  border: 2px solid var(--brown);
}
.footer-brand__name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: .16em;
  color: var(--mist);
}
.footer-summary {
  max-width: 34ch;
  font-size: .89rem;
  line-height: 1.7;
  color: var(--sand);
}
.footer-note {
  max-width: 34ch;
  padding-left: .65rem;
  border-left: 3px solid var(--ember);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.65;
  color: var(--data-gray);
}

.footer-col { display: grid; gap: .7rem; align-content: start; }
.footer-col__title {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--lime);
}
.footer-list { display: flex; flex-direction: column; gap: .45rem; }
.footer-link {
  font-size: .9rem;
  color: var(--sand);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.footer-link:hover { color: var(--lime); border-bottom-color: var(--lime); }

.footer-contact { display: grid; gap: .7rem; align-content: start; }
.footer-contact__row { display: grid; gap: .12rem; }
.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--data-gray);
}
.footer-contact__value {
  font-family: var(--font-mono);
  font-size: .82rem;
  line-height: 1.55;
  color: var(--mist);
  text-decoration: none;
  word-break: break-word;
}
a.footer-contact__value:hover { color: var(--lime); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.25rem 1.5rem;
}
.footer-legal {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--data-gray);
}

.to-top {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem .8rem;
  background-color: transparent;
  color: var(--lime);
  border: 2px solid var(--lime);
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  transition: background-color .18s var(--ease), color .18s var(--ease);
}
.to-top:hover { background-color: var(--lime); color: var(--ink-green); }
.to-top[hidden] { display: none; }

/* ---------- 15. Reveal (JS 协议) ---------- */
.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .45s var(--ease), transform .45s var(--ease);
}
.js-reveal [data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 16. Responsive ---------- */
@media (max-width: 1180px) {
  .site-nav__link { padding: .5rem .5rem; font-size: .86rem; }
  .brand__tagline { font-size: 10px; }
}

@media (max-width: 1000px) {
  html { scroll-padding-top: 88px; }

  .header-inner {
    min-height: 66px;
    flex-wrap: wrap;
    row-gap: 0;
  }
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: .85rem var(--gutter) 1.35rem;
    background-color: var(--charcoal);
    border-top: 2px solid var(--brown);
    border-bottom: 3px solid var(--lime);
    box-shadow: 0 18px 0 rgba(11, 42, 34, .45);
    max-height: calc(100vh - 96px);
    overflow-y: auto;
  }
  .site-nav[data-open] { display: flex; }

  .site-nav__list { flex-direction: column; align-items: stretch; gap: .3rem; }
  .site-nav__link {
    padding: .8rem .9rem;
    font-size: 1rem;
    border-color: var(--moss);
    color: var(--mist);
  }
  .site-nav__link:hover { color: var(--lime); border-color: var(--lime); }
  .site-nav__link[aria-current="page"] {
    background-color: var(--lime);
    color: var(--ink-green);
    border-color: var(--lime);
    box-shadow: 4px 4px 0 var(--moss);
  }
  .site-nav__cta {
    margin: .9rem 0 0;
    padding: .85rem 1rem;
    font-size: 12px;
    width: 100%;
  }

  .layout-split { grid-template-columns: minmax(0, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .footer-top { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .footer-contact { grid-column: 1 / -1; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
  .footer-summary, .footer-note { max-width: 52ch; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .grid-2, .grid-3 { grid-template-columns: minmax(0, 1fr); }
  .brand__mark { width: 40px; height: 40px; font-size: .95rem; }
  .brand__name { font-size: 1rem; letter-spacing: .12em; }
  .data-list__row { grid-template-columns: minmax(0, 1fr); gap: .15rem; }
}

@media (max-width: 620px) {
  .footer-top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-contact { grid-template-columns: minmax(0, 1fr); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .brand__tagline { display: none; }
  .btn { padding: .8rem 1.1rem; font-size: 11.5px; }
}

/* ---------- 17. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .js-reveal [data-reveal] { opacity: 1; transform: none; transition: none; }
  .btn:hover, .card:hover, .brand__link:hover .brand__mark { transform: none; }
}