/* =====================================================================
   三亿体育入口 — /assets/site.css
   共享层：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ===================================================================== */

/* ---------- 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%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; border-spacing: 0; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #0B0B0C;
  --ink-2: #1C1613;
  --cream: #F5EEE3;
  --cream-2: #EAE0CE;
  --red: #D32229;
  --red-deep: #8F171C;
  --orange: #F2731A;
  --lime: #C9F73C;
  --brown: #7C6B5B;
  --white: #FFFFFF;
  --grid-line: #D9CDB9;

  --on-dark: rgba(234, 224, 206, .76);
  --on-dark-dim: rgba(234, 224, 206, .40);

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "DIN Alternate", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --bd: 3px solid var(--ink);
  --bd-2: 2px solid var(--ink);
  --shadow: 8px 8px 0 var(--ink);
  --shadow-sm: 4px 4px 0 var(--ink);
  --shadow-lg: 12px 12px 0 var(--ink);

  --wrap: 1240px;
  --pad: clamp(16px, 4vw, 40px);
  --gap: clamp(16px, 2.2vw, 28px);

  --head-h: 66px;
  --tick-h: 34px;

  --t: 150ms;
  --ease: cubic-bezier(.2, .7, .3, 1);
  --skew: -6deg;
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--ink);
  background-color: var(--cream);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4 { font-weight: 900; line-height: 1.12; letter-spacing: -0.02em; }
p { text-wrap: pretty; }

/* ---------- 4. 通用工具 ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad); }
.mono, .num {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
}
.muted { color: var(--brown); }
.stack { display: flex; flex-direction: column; gap: var(--gap); }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px;
  padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.rule { height: 3px; background: var(--ink); border: 0; }

/* ---------- 5. 区块 ---------- */
.section { padding: clamp(48px, 6.5vw, 96px) 0; position: relative; }
.section--alt { background: var(--cream-2); }
.section--dark { background: var(--ink); color: var(--cream); }
.section--dark .h2, .section--dark .h3, .section--dark .h1 { color: var(--white); }
.section--dark .muted { color: var(--on-dark); }
.section--dark .lead { color: var(--on-dark); }
.section__head {
  display: flex; align-items: flex-end; justify-content: space-between;
  flex-wrap: wrap; gap: 14px 24px; margin-bottom: clamp(24px, 3vw, 40px);
}

/* ---------- 6. 标题族 ---------- */
.h1 {
  font-size: clamp(38px, 6.6vw, 92px);
  line-height: .96;
  letter-spacing: -0.035em;
  transform: skewX(var(--skew));
  transform-origin: left bottom;
}
.h2 { font-size: clamp(26px, 3.4vw, 46px); line-height: 1.06; }
.h3 { font-size: clamp(18px, 1.6vw, 22px); line-height: 1.3; }
.lead { font-size: clamp(16px, 1.5vw, 19px); line-height: 1.75; max-width: 62ch; color: var(--ink); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-mono); font-size: 12px; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase; color: var(--red);
}
.eyebrow::before { content: ""; width: 24px; height: 3px; background: var(--red); display: block; }
.section--dark .eyebrow { color: var(--lime); }
.section--dark .eyebrow::before { background: var(--lime); }

/* ---------- 7. 按钮 / 标签 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 22px; border: var(--bd); background: var(--cream);
  font-size: 15px; font-weight: 800; letter-spacing: .01em; color: var(--ink);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease),
              background-color var(--t) var(--ease), color var(--t) var(--ease);
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); background: var(--lime); }
.btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
.btn--red { background: var(--red); color: var(--white); }
.btn--red:hover { background: var(--orange); color: var(--ink); }
.btn--dark { background: var(--ink); color: var(--cream); }
.btn--dark:hover { background: var(--ink-2); color: var(--lime); }
.btn--ghost { background: transparent; box-shadow: none; }
.btn--ghost:hover { background: var(--cream-2); transform: none; box-shadow: none; }
.btn--sm { padding: 8px 14px; font-size: 13px; }

.tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 9px; border: 2px solid var(--ink);
  background: var(--cream-2); color: var(--ink);
  font-family: var(--font-mono); font-size: 11px; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
}
.tag--red { background: var(--red); border-color: var(--red); color: var(--white); }
.tag--orange { background: var(--orange); border-color: var(--ink); color: var(--ink); }
.tag--lime { background: var(--lime); border-color: var(--ink); color: var(--ink); }

/* ---------- 8. 卡片 ---------- */
.card {
  background: var(--white); border: var(--bd); box-shadow: var(--shadow);
  padding: clamp(18px, 2.2vw, 28px);
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.card:hover { transform: translate(-4px, -4px); box-shadow: var(--shadow-lg); }
.card--dark {
  background: var(--ink-2); color: var(--cream);
  border-color: var(--ink); box-shadow: 8px 8px 0 var(--red);
}
.card--dark .card__title { color: var(--white); }
.card--dark .card__text { color: var(--on-dark); }
.card__title { font-size: 19px; font-weight: 900; line-height: 1.3; letter-spacing: -0.01em; }
.card__text { margin-top: 10px; font-size: 14px; line-height: 1.7; color: var(--brown); }

/* ---------- 9. 数据看板 ---------- */
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat__num {
  font-family: var(--font-mono); font-weight: 700;
  font-size: clamp(30px, 4.2vw, 52px); line-height: 1;
  letter-spacing: .01em; color: var(--red);
  font-variant-numeric: tabular-nums;
}
.stat__label { font-size: 13px; letter-spacing: .02em; color: var(--brown); }
.section--dark .stat__num { color: var(--lime); }
.section--dark .stat__label { color: var(--on-dark); }

/* ---------- 10. 数据表格 ---------- */
.data-table { width: 100%; font-family: var(--font-mono); font-size: 14px; font-weight: 500; }
.data-table th, .data-table td { border: 2px solid var(--ink); padding: 10px 12px; text-align: left; }
.data-table thead th {
  background: var(--ink); color: var(--cream);
  font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
}
.data-table tbody tr { transition: background-color var(--t) var(--ease); }
.data-table tbody tr:hover { background: var(--cream-2); }
.data-table__num { text-align: right; font-weight: 700; }

/* ---------- 11. 图片容器 ---------- */
.media {
  position: relative; display: block; overflow: hidden;
  border: var(--bd); background: var(--ink-2); box-shadow: var(--shadow);
}
.media__img { width: 100%; height: 100%; object-fit: cover; display: block; }
.media__grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, rgba(245, 238, 227, .14) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(90deg, rgba(245, 238, 227, .14) 0 1px, transparent 1px 44px);
}
.media__cap {
  position: absolute; left: 0; bottom: 0; padding: 6px 12px;
  background: var(--ink); color: var(--cream);
  font-family: var(--font-mono); font-size: 11px; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--21x9 { aspect-ratio: 21 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--3x4 { aspect-ratio: 3 / 4; }
.media--placeholder {
  display: grid; place-items: center; box-shadow: none;
  background: var(--cream-2); color: var(--brown);
  font-family: var(--font-mono); font-size: 12px; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase;
}

/* ---------- 12. 栅格 ---------- */
.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

/* ---------- 13. 正文 / 链接 / 面包屑 ---------- */
.prose { max-width: 72ch; font-size: 16px; line-height: 1.8; }
.prose p + p { margin-top: 1em; }
.prose h2 { margin: 1.6em 0 .6em; font-size: clamp(22px, 2.4vw, 30px); }
.prose h3 { margin: 1.4em 0 .5em; font-size: 19px; }
.section--dark .prose { color: var(--on-dark); }
.section--dark .prose h2, .section--dark .prose h3 { color: var(--white); }

.link {
  position: relative; display: inline-block;
  font-weight: 700; color: var(--red);
  transition: color var(--t) var(--ease);
}
.link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px;
  background: currentColor; transform: scaleX(0); transform-origin: left center;
  transition: transform var(--t) var(--ease);
}
.link:hover::after, .link:focus-visible::after { transform: scaleX(1); }
.link:hover { color: var(--red-deep); }

.breadcrumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  padding: 16px 0;
  font-family: var(--font-mono); font-size: 12px; font-weight: 700;
  letter-spacing: .06em; color: var(--brown);
}
.breadcrumb a { transition: color var(--t) var(--ease); }
.breadcrumb a:hover { color: var(--red); }
.breadcrumb__sep { color: var(--grid-line); }

/* =====================================================================
   14. 头部
   ===================================================================== */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 300;
  padding: 10px 18px; background: var(--lime); color: var(--ink);
  border: var(--bd); font-weight: 800; font-size: 14px;
}
.skip-link:focus { left: 12px; top: 12px; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--cream);
  border-bottom: var(--bd);
}

/* 顶部状态条 */
.ticker { background: var(--ink); color: var(--cream-2); border-bottom: 1px solid #2E2721; }
.ticker__inner {
  max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad);
  min-height: var(--tick-h);
  display: flex; align-items: center; gap: 14px 20px; flex-wrap: wrap;
}
.ticker__label {
  font-family: var(--font-mono); font-size: 11px; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase; color: var(--lime);
}
.ticker__nav { display: flex; align-items: center; gap: 18px; }
.ticker__link {
  font-size: 12px; font-weight: 700; letter-spacing: .04em;
  color: var(--cream-2); border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}
.ticker__link:hover { color: var(--lime); border-bottom-color: var(--lime); }
.ticker__meta {
  margin-left: auto; display: flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .12em;
  color: var(--on-dark-dim);
}
.ticker__pulse {
  width: 8px; height: 8px; background: var(--red); display: block;
  box-shadow: 0 0 0 3px rgba(211, 34, 41, .22);
}

/* 命令栏 */
.cmd { background: var(--cream); }
.cmd__inner {
  max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad);
  min-height: var(--head-h);
  display: flex; align-items: stretch; gap: clamp(10px, 1.6vw, 24px);
}

.brand { display: inline-flex; align-items: baseline; gap: 10px; flex: 0 0 auto; align-self: center; }
.brand__mark {
  display: inline-block; font-size: 21px; font-weight: 900;
  letter-spacing: -0.03em; transform: skewX(var(--skew));
  color: var(--ink); transition: color var(--t) var(--ease);
}
.brand__mark::before {
  content: ""; display: inline-block; width: 8px; height: 8px;
  background: var(--red); margin-right: 7px; vertical-align: 3px;
  transform: skewX(calc(-1 * var(--skew)));
}
.brand:hover .brand__mark { color: var(--red); }
.brand__sub {
  font-family: var(--font-mono); font-size: 10px; font-weight: 700;
  letter-spacing: .2em; text-transform: uppercase; color: var(--brown);
}

.nav { margin-left: auto; }
.nav__list { display: flex; align-items: stretch; height: 100%; }
.nav__item { display: flex; }
.nav__link {
  position: relative; display: flex; align-items: center; gap: 7px;
  padding: 0 clamp(8px, 1vw, 13px);
  font-size: 14px; font-weight: 700; letter-spacing: .01em;
  border-left: 1px solid var(--grid-line);
  transition: background-color var(--t) var(--ease), color var(--t) var(--ease);
}
.nav__link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 4px;
  background: var(--red); transform: scaleX(0); transform-origin: left center;
  transition: transform var(--t) var(--ease), background-color var(--t) var(--ease);
}
.nav__idx {
  font-family: var(--font-mono); font-size: 10px; font-weight: 700;
  letter-spacing: .06em; color: var(--brown);
  transition: color var(--t) var(--ease);
}
.nav__link:hover { background: var(--cream-2); }
.nav__link:hover::after { transform: scaleX(1); }
.nav__link[aria-current="page"] { background: var(--ink); color: var(--cream); }
.nav__link[aria-current="page"]::after { transform: scaleX(1); background: var(--lime); }
.nav__link[aria-current="page"] .nav__idx { color: var(--lime); }

.cta {
  align-self: center; flex: 0 0 auto;
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 16px; background: var(--red); color: var(--white);
  border: var(--bd); box-shadow: var(--shadow-sm);
  font-size: 14px; font-weight: 800; letter-spacing: .01em;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), background-color var(--t) var(--ease);
}
.cta:hover { background: var(--orange); color: var(--ink); transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); }
.cta:active { background: var(--red-deep); color: var(--white); transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }

.nav-toggle {
  display: none; align-items: center; gap: 9px;
  align-self: center; margin-left: auto;
  padding: 9px 13px; border: var(--bd); background: var(--lime); color: var(--ink);
  font-size: 13px; font-weight: 800; letter-spacing: .06em;
  transition: background-color var(--t) var(--ease);
}
.nav-toggle:hover { background: var(--orange); }
.nav-toggle__bars { display: flex; flex-direction: column; gap: 4px; width: 16px; }
.nav-toggle__bars span { display: block; height: 2px; background: var(--ink); }
.nav-toggle__text { font-family: var(--font-mono); letter-spacing: .1em; }

.progress { height: 4px; background: var(--cream-2); }
.progress__bar {
  display: block; height: 100%; width: 100%;
  background: var(--red); transform: scaleX(0); transform-origin: left center;
}

@media (max-width: 1100px) {
  .nav__link { padding-inline: 8px; font-size: 13px; }
  .brand__sub { display: none; }
}

@media (max-width: 980px) {
  .ticker__meta { display: none; }
  .cta { display: none; }
  .nav-toggle { display: inline-flex; }

  .nav {
    position: absolute; left: 0; right: 0; top: 100%;
    display: none; margin: 0;
    background: var(--cream);
    border-top: var(--bd); border-bottom: var(--bd);
    box-shadow: 0 10px 0 rgba(11, 11, 12, .16);
  }
  .nav[data-open] { display: block; }
  .nav__list { flex-direction: column; height: auto; }
  .nav__item { display: block; }
  .nav__link {
    height: auto; padding: 15px var(--pad);
    border-left: 0; border-bottom: 1px solid var(--grid-line);
    font-size: 16px;
  }
  .nav__link::after { bottom: 0; }
  .nav__idx { font-size: 11px; }
}

@media (max-width: 560px) {
  .ticker__label { display: none; }
  .ticker__nav { gap: 14px; }
}

/* =====================================================================
   15. 页脚
   ===================================================================== */
.site-footer {
  position: relative;
  background: var(--ink); color: var(--on-dark);
  border-top: 8px solid var(--red);
}
.footer__marquee {
  overflow: hidden; padding: 14px 0;
  border-bottom: 1px solid rgba(234, 224, 206, .16);
}
.footer__marquee span {
  display: block; white-space: nowrap;
  font-family: var(--font-mono); font-size: 12px; font-weight: 700;
  letter-spacing: .32em; color: rgba(234, 224, 206, .26);
}
.footer__inner {
  max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad);
  padding-top: clamp(40px, 5.5vw, 76px); padding-bottom: 28px;
}
.footer__top {
  display: grid; grid-template-columns: minmax(230px, 1.1fr) 2fr;
  gap: clamp(28px, 5vw, 68px);
}
.footer__logo {
  display: inline-block; color: var(--white);
  font-size: clamp(26px, 3.4vw, 40px); font-weight: 900;
  line-height: 1; letter-spacing: -0.03em;
  transform: skewX(var(--skew));
  transition: color var(--t) var(--ease);
}
.footer__logo:hover { color: var(--lime); }
.footer__logo-mark {
  display: block; margin-top: 12px;
  font-family: var(--font-mono); font-size: 11px; font-weight: 700;
  letter-spacing: .26em; color: var(--lime);
  transform: skewX(calc(-1 * var(--skew)));
}
.footer__desc {
  margin-top: 18px; font-size: 14px; line-height: 1.7;
  color: var(--on-dark);
  border-left: 3px solid var(--red); padding-left: 12px;
}
.footer__quick { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 20px; }
.footer__quick-link {
  font-size: 13px; font-weight: 700; color: var(--on-dark);
  border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}
.footer__quick-link:hover { color: var(--lime); border-bottom-color: var(--lime); }

.footer__nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px 28px; }
.footer__col { border-top: 2px solid rgba(234, 224, 206, .18); padding-top: 14px; }
.footer__col-title {
  display: flex; align-items: baseline; gap: 8px;
  font-size: 14px; font-weight: 800; color: var(--white);
  letter-spacing: .02em;
}
.footer__col-idx {
  font-family: var(--font-mono); font-size: 11px; font-weight: 700;
  color: var(--red);
}
.footer__link {
  display: inline-block; margin-top: 10px;
  font-size: 13px; color: var(--on-dark);
  border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}
.footer__link:hover { color: var(--lime); border-bottom-color: var(--lime); }

.footer__meta {
  margin-top: clamp(34px, 5vw, 64px);
  padding-top: 22px;
  border-top: 3px solid var(--red);
  display: flex; flex-direction: column; gap: 8px;
}
.footer__contact {
  font-family: var(--font-mono); font-size: 13px; font-weight: 500;
  color: var(--on-dark); line-height: 1.8;
}
.footer__contact-key {
  display: inline-block; margin-right: 8px;
  font-size: 11px; font-weight: 700; letter-spacing: .12em;
  color: var(--lime);
}
.footer__sep { margin: 0 8px; color: var(--on-dark-dim); }
.footer__note { font-size: 13px; color: var(--on-dark-dim); }
.footer__legal {
  margin-top: 6px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em;
  color: var(--on-dark-dim);
}

@media (max-width: 900px) {
  .footer__top { grid-template-columns: 1fr; }
  .footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 520px) {
  .footer__nav { grid-template-columns: 1fr; gap: 20px; }
  .footer__contact { font-size: 12px; }
}

/* =====================================================================
   16. 焦点 / 响应式栅格 / 动效降级
   ===================================================================== */
:focus-visible {
  outline: 3px solid var(--lime);
  outline-offset: 2px;
  box-shadow: 0 0 0 1px var(--ink);
}
.site-footer :focus-visible, .ticker :focus-visible { box-shadow: none; }

@media (max-width: 900px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .grid--2, .grid--3 { grid-template-columns: 1fr; }
  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .h1 { transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .card:hover, .btn:hover { transform: none; }
}