/* ============================================================
   博万体育 · 共享层 site.css
   夜间战术板：深海底 + 荧光青锚点 + 珊瑚橙结论
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root {
  --deep: #0B1B2B;
  --carbon: #05090F;
  --cyan: #35F0D0;
  --coral: #FF6B4A;
  --home: #F2542D;
  --away: #7A93A8;
  --paper: #F4F1EA;
  --line: #C9CFD6;
  --half: #CFE9E4;
  --ink: #101418;

  --hairline: rgba(244, 241, 234, .16);
  --hairline-strong: rgba(244, 241, 234, .34);
  --hairline-soft: rgba(244, 241, 234, .09);
  --cyan-wash: rgba(53, 240, 208, .12);
  --coral-wash: rgba(255, 107, 74, .14);
  --home-wash: rgba(242, 84, 45, .14);
  --away-wash: rgba(122, 147, 168, .14);

  --font-body: "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;

  --shell: 1180px;
  --gutter: clamp(16px, 4vw, 48px);
  --header-h: 66px;
}

/* ---------- 2. 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, figcaption, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { 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; }
[hidden] { display: none !important; }

/* ---------- 3. 基础与中文排版 ---------- */
body {
  background: var(--deep);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 450;
  line-height: 1.75;
  letter-spacing: .01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-weight: 800; line-height: 1.14; letter-spacing: .015em; }

.headline { font-size: clamp(28px, 4.6vw, 52px); font-weight: 800; line-height: 1.06; letter-spacing: .01em; }
.headline--xl { font-size: clamp(36px, 7vw, 84px); line-height: 1; letter-spacing: 0; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--cyan);
}

:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
#main-content:focus { outline: none; }

/* ---------- 4. 骨架 ---------- */
.shell { width: 100%; max-width: var(--shell); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.section { padding: clamp(48px, 8vw, 96px) 0; }
.content-wrap { padding: clamp(28px, 5vw, 64px) 0; }

.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: clamp(16px, 2.4vw, 32px); }
.c-1 { grid-column: span 1; } .c-2 { grid-column: span 2; } .c-3 { grid-column: span 3; }
.c-4 { grid-column: span 4; } .c-5 { grid-column: span 5; } .c-6 { grid-column: span 6; }
.c-7 { grid-column: span 7; } .c-8 { grid-column: span 8; } .c-9 { grid-column: span 9; }
.c-10 { grid-column: span 10; } .c-11 { grid-column: span 11; } .c-12 { grid-column: span 12; }

.rule { width: 64px; height: 2px; border: 0; background: var(--cyan); }
.rule--coral { background: var(--coral); }
.rule--line { background: var(--hairline-strong); }

.tickline {
  height: 8px;
  border-top: 1px solid var(--hairline-strong);
  background-image: repeating-linear-gradient(90deg, var(--hairline-strong) 0 1px, transparent 1px 5%);
}

.vlabel {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--away);
}

.frame {
  position: relative;
  border: 1px solid var(--hairline-strong);
  padding: clamp(18px, 3vw, 36px);
  background: linear-gradient(160deg, rgba(11, 27, 43, .9), rgba(5, 9, 15, .9));
}
.frame::before, .frame::after {
  content: "";
  position: absolute;
  width: 14px; height: 14px;
  border: 2px solid var(--cyan);
}
.frame::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.frame::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

.split { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--hairline); }
.split__side { padding: clamp(18px, 3vw, 28px); }
.split__side--home { background: var(--home-wash); border-left: 3px solid var(--home); }
.split__side--away { background: var(--away-wash); border-left: 3px solid var(--away); }
.split__side + .split__side { border-top: 0; }

.surface--paper { background: var(--paper); color: var(--ink); }

/* ---------- 5. 正文 ---------- */
.prose { font-size: 16px; line-height: 1.75; color: rgba(244, 241, 234, .84); }
.prose > * + * { margin-top: 1.1em; }
.prose p { max-width: 38em; }
.prose h2 { font-size: clamp(22px, 3vw, 30px); color: var(--paper); margin-top: 1.9em; }
.prose h3 { font-size: 18px; color: var(--paper); }
.prose ul, .prose ol { display: flex; flex-direction: column; gap: .5em; }
.prose li { position: relative; padding-left: 18px; }
.prose li::before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 2px; background: var(--cyan); }
.prose strong { color: var(--paper); font-weight: 700; }
.prose a { border-bottom: 1px solid var(--cyan); }
.prose--light { color: rgba(16, 20, 24, .86); }
.prose--light h2, .prose--light h3, .prose--light strong { color: var(--ink); }
.prose--light li::before { background: var(--home); }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .08em;
  border: 1px solid var(--hairline-strong);
  color: var(--paper);
  background: transparent;
  transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease, border-color .18s ease, color .18s ease;
}
.btn:hover { transform: translate(-2px, -2px); }
.btn--cyan { background: var(--cyan); border-color: var(--cyan); color: var(--carbon); }
.btn--cyan:hover { box-shadow: 6px 6px 0 rgba(53, 240, 208, .28); }
.btn--coral { background: var(--coral); border-color: var(--coral); color: #170603; }
.btn--coral:hover { box-shadow: 6px 6px 0 rgba(255, 107, 74, .3); }
.btn--ghost { background: rgba(244, 241, 234, .04); }
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); box-shadow: 6px 6px 0 rgba(53, 240, 208, .16); }
.btn--sm { padding: 9px 15px; font-size: 13px; }

/* ---------- 7. 数据组件 ---------- */
.kpi {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: rgba(5, 9, 15, .55);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--hairline-strong);
}
.kpi__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
  text-shadow: 0 0 18px rgba(53, 240, 208, .45);
}
.kpi__unit { font-size: .42em; margin-left: .35em; letter-spacing: .08em; color: var(--away); text-shadow: none; }
.kpi__label { font-family: var(--font-mono); font-size: 12px; letter-spacing: .14em; color: var(--away); }
.kpi--coral { border-left-color: var(--coral); }
.kpi--coral .kpi__num { color: var(--coral); text-shadow: 0 0 18px rgba(255, 107, 74, .4); }
.kpi--home { border-left-color: var(--home); }
.kpi--home .kpi__num { color: var(--home); text-shadow: none; }
.kpi--away { border-left-color: var(--away); }
.kpi--away .kpi__num { color: var(--away); text-shadow: none; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  border: 1px solid var(--hairline-strong);
  color: var(--paper);
}
.tag--cyan { border-color: var(--cyan); color: var(--cyan); }
.tag--coral { border-color: var(--coral); color: var(--coral); }
.tag--home { border-color: var(--home); color: var(--home); }
.tag--away { border-color: var(--away); color: var(--away); }

.data-table { width: 100%; font-size: 14px; }
.data-table th, .data-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--hairline); }
.data-table th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--away);
}
.data-table tbody tr:hover { background: rgba(244, 241, 234, .04); }
.data-table .num { font-family: var(--font-mono); text-align: right; }
.data-table [tabindex]:focus-visible { outline: 2px solid var(--cyan); outline-offset: -2px; }

/* ---------- 8. 分段切换 ---------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  border-bottom: 1px solid var(--hairline);
}
.tabs__tab {
  padding: 11px 16px;
  font-size: 14px;
  letter-spacing: .06em;
  color: rgba(244, 241, 234, .66);
  border-bottom: 2px solid transparent;
  transition: color .18s ease, background-color .18s ease, border-color .18s ease;
}
.tabs__tab:hover { color: var(--paper); background: rgba(244, 241, 234, .05); }
.tabs__tab[aria-selected="true"] { color: var(--paper); background: var(--cyan-wash); border-bottom-color: var(--cyan); }
.tabs__panel { padding-top: clamp(18px, 3vw, 28px); }

@keyframes flipIn {
  0% { opacity: .15; transform: translateY(-10px) rotateX(48deg); }
  100% { opacity: 1; transform: none; }
}
.is-flip { animation: flipIn 180ms ease-out both; }

/* ---------- 9. 显现 ---------- */
[data-reveal] { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
[data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- 10. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 18px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--away);
}
.breadcrumb a { color: rgba(244, 241, 234, .74); }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb__sep { color: rgba(122, 147, 168, .6); }
.breadcrumb [aria-current="page"] { color: var(--paper); }

/* ---------- 11. 图片容器 ---------- */
.frame-media {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--hairline);
  background:
    linear-gradient(140deg, rgba(53, 240, 208, .1), rgba(5, 9, 15, .92)),
    var(--deep);
}
.frame-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(115deg, rgba(244, 241, 234, .07) 0 1px, transparent 1px 26px);
  pointer-events: none;
}
.frame-media img { width: 100%; height: 100%; object-fit: cover; }
.frame-media--16x9 { aspect-ratio: 16 / 9; }
.frame-media--4x3 { aspect-ratio: 4 / 3; }
.frame-media--3x4 { aspect-ratio: 3 / 4; }
.frame-media--1x1 { aspect-ratio: 1 / 1; }
.fig-cap { margin-top: 10px; font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; color: var(--away); }

/* ---------- 12. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -70px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--carbon);
  font-size: 14px;
  font-weight: 700;
  transition: top .18s ease;
}
.skip-link:focus { top: 12px; }

/* ---------- 13. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(5, 9, 15, .94);
  border-bottom: 1px solid var(--hairline);
}
@supports (backdrop-filter: blur(10px)) {
  .site-header { background: rgba(5, 9, 15, .82); backdrop-filter: blur(10px); }
}
.header-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
  will-change: transform;
}
.header-bar {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  min-height: var(--header-h);
}
.brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand__mark {
  position: relative;
  padding-left: 14px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .14em;
  color: var(--paper);
  white-space: nowrap;
}
.brand__mark::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 18px;
  transform: translateY(-50%);
  background: var(--cyan);
}
.brand__status {
  display: flex;
  align-items: center;
  gap: 7px;
  padding-left: 14px;
  border-left: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--away);
  white-space: nowrap;
}
.brand__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 8px rgba(255, 107, 74, .9);
}
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 10px 14px;
  border: 1px solid var(--hairline-strong);
  color: var(--paper);
  font-size: 13px;
  letter-spacing: .12em;
}
.nav-toggle__bars { position: relative; 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);
}
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }
.site-nav { display: flex; align-items: center; gap: 18px; margin-left: auto; min-width: 0; }
.site-nav__list { display: flex; align-items: center; gap: 2px; }
.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 20px 11px;
  font-size: 14px;
  color: rgba(244, 241, 234, .7);
  border-bottom: 2px solid transparent;
  transition: color .18s ease, background-color .18s ease, border-color .18s ease;
}
.site-nav__link:hover { color: var(--paper); background: rgba(244, 241, 234, .05); }
.site-nav__link[aria-current="page"] { color: var(--paper); border-bottom-color: var(--cyan); }
.site-nav__link[aria-current="page"] .nav-idx { color: var(--cyan); }
.nav-idx { font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; color: rgba(122, 147, 168, .9); }
.nav-cta { flex: 0 0 auto; }

/* ---------- 14. 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--carbon);
  color: var(--paper);
  border-top: 1px solid var(--hairline);
}
.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan) 0 22%, var(--coral) 22% 30%, rgba(122, 147, 168, .5) 30% 100%);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: clamp(28px, 4vw, 56px);
  padding: clamp(40px, 6vw, 72px) 0 clamp(28px, 4vw, 40px);
}
.footer-col { min-width: 0; }
.footer-brand { display: inline-block; font-size: 20px; font-weight: 800; letter-spacing: .14em; color: var(--paper); }
.footer-brand:hover { color: var(--cyan); }
.footer-lede { margin-top: 14px; max-width: 26em; font-size: 14px; line-height: 1.7; color: rgba(244, 241, 234, .68); }
.footer-col .btn { margin-top: 18px; }
.footer-title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--away);
}
.footer-links { display: flex; flex-direction: column; gap: 2px; }
.footer-links a {
  display: inline-block;
  padding: 7px 0;
  font-size: 14px;
  color: rgba(244, 241, 234, .8);
  transition: color .18s ease, transform .18s ease;
}
.footer-links a:hover { color: var(--cyan); transform: translateX(4px); }
.footer-contact { display: flex; flex-direction: column; gap: 12px; }
.footer-contact li { display: grid; grid-template-columns: 54px 1fr; gap: 10px; font-size: 14px; line-height: 1.65; }
.footer-key { padding-top: 3px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; color: var(--away); }
.footer-val { color: rgba(244, 241, 234, .88); word-break: break-word; }
.footer-legal { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 20px; }
.footer-legal a { font-size: 13px; color: var(--away); }
.footer-legal a:hover { color: var(--cyan); }
.footer-bottom { border-top: 1px solid var(--hairline); padding: 16px 0 26px; }
.footer-bottom p {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(122, 147, 168, .9);
}

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1080px) {
  .brand__status { display: none; }
  .site-nav { gap: 10px; }
  .site-nav__link { padding: 20px 8px; font-size: 13px; }
}

@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    top: var(--header-h);
    bottom: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 18px var(--gutter) 40px;
    background: var(--carbon);
    border-top: 1px solid var(--hairline);
    overflow-y: auto;
  }
  .site-nav[data-open] { display: flex; }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav__link {
    padding: 16px 4px;
    font-size: 16px;
    border-bottom: 1px solid var(--hairline);
    border-left: 2px solid transparent;
  }
  .site-nav__link:hover { background: transparent; }
  .site-nav__link[aria-current="page"] {
    padding-left: 12px;
    border-bottom-color: var(--hairline);
    border-left-color: var(--cyan);
  }
  .nav-cta { margin-top: 22px; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-col:first-child { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .grid { grid-template-columns: 1fr; }
  .grid > * { grid-column: 1 / -1; }
  .split { grid-template-columns: 1fr; }
  .split__side + .split__side { border-top: 1px solid var(--hairline); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-contact li { grid-template-columns: 46px 1fr; }
  .tabs__tab { padding: 10px 12px; font-size: 13px; }
}

@media (max-width: 420px) {
  .brand__mark { font-size: 17px; letter-spacing: .1em; }
  .btn { padding: 11px 16px; }
}

/* ---------- 16. 动效偏好 ---------- */
@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; }
}