/* =========================================================
   B体育安卓版 · 共享样式 /assets/site.css
   赛场墨绿底 + 荧光青状态 + 信号橙提醒 + 电子紫标注
   ========================================================= */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html,body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
h1,h2,h3,h4{line-height:1.25;font-weight:800}

/* ---------- 2. tokens ---------- */
:root{
  --bg:#06120E;
  --bg-deep:#04100C;
  --panel:#0C201A;
  --line:#1C3A31;
  --cyan:#35F2C6;
  --cyan-deep:#17C79E;
  --orange:#FF7A33;
  --purple:#A06BFF;
  --white:#F1F7F4;
  --muted:#93AFA6;
  --warn:#FFD166;
  --shell-max:1440px;
  --gutter:48px;
  --rail:240px;
  --gap:20px;
  --mono:"JetBrains Mono","DM Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --sans:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --t-fast:120ms;
  --t-mid:240ms;
}

/* ---------- 3. 基础排版 ---------- */
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--white);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  letter-spacing:.01em;
  min-height:100vh;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.55;
  background-image:
    linear-gradient(to right,rgba(28,58,49,.85) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(28,58,49,.55) 1px,transparent 1px);
  background-size:80px 80px;
}
#main-content{position:relative;z-index:1}
h1{font-size:clamp(2.75rem,4.6vw,4rem);letter-spacing:.06em}
h2{font-size:clamp(1.5rem,2.4vw,2rem);letter-spacing:.05em}
h3{font-size:1.125rem;letter-spacing:.04em}
strong{font-weight:700;color:var(--white)}
code,.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
::selection{background:var(--cyan);color:var(--bg-deep)}

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

/* ---------- 4. 骨架 ---------- */
.shell{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.site-main{position:relative;z-index:1;padding-block:40px 0}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.col-4{grid-column:span 4}
.col-6{grid-column:span 6}
.col-8{grid-column:span 8}
.col-12{grid-column:span 12}
.rail-layout{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);gap:0}
.rail{
  border-right:1px solid var(--line);
  padding:4px 20px 40px 0;
  align-self:start;
  position:sticky;
  top:112px;
}
.main-col{padding-left:32px;min-width:0}

/* 框景 */
.frame{
  position:relative;
  border:1px solid var(--line);
  background:rgba(12,32,26,.35);
  padding:28px;
}
.frame::before,.frame::after{
  content:"";position:absolute;width:14px;height:14px;border:1px solid var(--cyan);opacity:.55;
}
.frame::before{top:-1px;left:-1px;border-right:0;border-bottom:0}
.frame::after{bottom:-1px;right:-1px;border-left:0;border-top:0}

/* ---------- 5. 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(6,18,14,.96);
  border-bottom:1px solid var(--line);
}
.skip-link{
  position:absolute;
  left:-9999px;
  top:0;
  z-index:80;
  padding:10px 18px;
  background:var(--cyan);
  color:var(--bg-deep);
  font-weight:700;
  letter-spacing:.06em;
}
.skip-link:focus{left:12px;top:8px}

.status-strip{
  height:34px;
  overflow:hidden;
  background:var(--bg-deep);
  border-bottom:1px solid var(--line);
  transition:height var(--t-mid) ease,opacity var(--t-mid) ease;
}
.status-strip__inner{display:flex;align-items:center;gap:12px;height:34px}
.status-strip__dot{
  width:6px;height:6px;flex:0 0 auto;
  background:var(--orange);
  box-shadow:0 0 0 3px rgba(255,122,51,.18);
}
.status-strip__text{
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--muted);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.status-strip__meta{
  margin-left:auto;
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--cyan-deep);
  white-space:nowrap;
}

.masthead{
  display:flex;
  align-items:center;
  gap:20px;
  padding-block:18px;
  transition:padding var(--t-mid) ease;
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand__mark{
  width:40px;height:40px;flex:0 0 auto;
  display:grid;place-items:center;
  border:1px solid var(--cyan);
  background:rgba(53,242,198,.07);
  color:var(--cyan);
  font-family:var(--mono);
  font-weight:700;
  font-size:19px;
  letter-spacing:.04em;
  transition:width var(--t-mid) ease,height var(--t-mid) ease;
}
.brand__text{display:block;min-width:0}
.brand__name{
  display:block;
  font-size:20px;
  font-weight:800;
  letter-spacing:.09em;
  color:var(--white);
}
.brand__slogan{
  display:block;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--muted);
}
.brand:hover .brand__mark{border-color:var(--white);color:var(--white)}

.cta-register{
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 16px;
  border:1px solid var(--orange);
  color:var(--orange);
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.12em;
  transition:background-color var(--t-fast) ease,color var(--t-fast) ease,padding var(--t-mid) ease;
}
.cta-register__icon{font-size:10px;line-height:1}
.cta-register:hover,.cta-register:focus-visible{background:var(--orange);color:var(--bg-deep)}
.cta-register:active{padding-inline:15px}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  border:1px solid var(--line);
  color:var(--muted);
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color var(--t-fast) ease,color var(--t-fast) ease;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{
  width:14px;height:1px;background:currentColor;
  box-shadow:0 -4px 0 currentColor,0 4px 0 currentColor;
}

.site-nav{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(4,16,12,.6)}
.site-nav__list{display:flex;align-items:stretch;flex-wrap:wrap}
.site-nav__item{border-right:1px solid var(--line)}
.site-nav__item:first-child{border-left:1px solid var(--line)}
.site-nav__link{
  display:flex;
  align-items:baseline;
  gap:9px;
  padding:14px 20px;
  color:var(--muted);
  border-bottom:2px solid transparent;
  transition:color var(--t-fast) ease,border-color var(--t-fast) ease,background-color var(--t-fast) ease;
}
.site-nav__index{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--line);
  transition:color var(--t-fast) ease;
}
.site-nav__label{font-size:14.5px;font-weight:500;letter-spacing:.06em}
.site-nav__link:hover{color:var(--white);background:rgba(53,242,198,.05);border-bottom-color:var(--cyan-deep)}
.site-nav__link:hover .site-nav__index{color:var(--cyan-deep)}
.site-nav__link[aria-current="page"]{color:var(--cyan);border-bottom-color:var(--cyan)}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--cyan)}

.site-header[data-condensed] .status-strip{height:0;opacity:0}
.site-header[data-condensed] .masthead{padding-block:10px}
.site-header[data-condensed] .brand__mark{width:32px;height:32px;font-size:16px}
.site-header[data-condensed] .brand__slogan{display:none}
.site-header[data-condensed] .cta-register{padding:8px 12px;font-size:12px}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:72px;
  background:var(--bg-deep);
  border-top:1px solid var(--line);
}
.footer__grid{
  display:grid;
  grid-template-columns:minmax(280px,1.5fr) repeat(3,minmax(130px,1fr));
  gap:32px;
  padding-block:52px 36px;
}
.footer__brand-name{
  font-size:18px;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--white);
}
.footer__slogan{
  margin-top:4px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--cyan);
}
.footer__contact-line{
  margin-top:10px;
  font-size:13px;
  line-height:1.65;
  color:var(--muted);
  max-width:34em;
}
.footer__value{
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--white);
  word-break:break-word;
}
.footer__cols{
  grid-column:span 3;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.footer__col{border-left:1px solid var(--line);padding-left:20px}
.footer__col-title{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.22em;
  color:var(--cyan-deep);
}
.footer__links{margin-top:12px;display:flex;flex-direction:column;gap:9px}
.footer__link{
  font-size:14px;
  color:var(--muted);
  border-bottom:1px solid transparent;
  transition:color var(--t-fast) ease,border-color var(--t-fast) ease;
}
.footer__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer__base{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  align-items:baseline;
  justify-content:space-between;
  padding-block:18px 26px;
  border-top:1px solid var(--line);
}
.footer__legal,.footer__note{
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--muted);
}
.footer__legal{color:var(--white)}

/* ---------- 7. 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 20px;
  border:1px solid var(--line);
  color:var(--white);
  font-size:14px;
  font-weight:500;
  letter-spacing:.08em;
  cursor:pointer;
  transition:border-color var(--t-fast) ease,color var(--t-fast) ease,background-color var(--t-fast) ease;
}
.btn:hover{border-color:var(--cyan);color:var(--cyan)}
.btn:active{padding-block:13px 11px}
.btn--accent{border-color:var(--orange);color:var(--orange)}
.btn--accent:hover{background:var(--orange);color:var(--bg-deep)}
.btn--solid{background:var(--cyan);border-color:var(--cyan);color:var(--bg-deep);font-weight:700}
.btn--solid:hover{background:var(--cyan-deep);border-color:var(--cyan-deep);color:var(--bg-deep)}
.btn--ghost{color:var(--muted)}
.btn--ghost:hover{color:var(--white);background:rgba(53,242,198,.06)}

/* ---------- 8. 面包屑 / 标题 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;color:var(--muted)}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__link{color:var(--muted);transition:color var(--t-fast) ease}
.breadcrumb__link:hover{color:var(--cyan)}
.breadcrumb__sep{color:var(--line)}

.eyebrow{
  display:inline-block;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.26em;
  color:var(--cyan);
  text-transform:uppercase;
}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}

/* ---------- 9. 面板 / 数据 / 标签 ---------- */
.panel{background:var(--panel);border:1px solid var(--line);padding:20px}
.panel + .panel{margin-top:16px}

.data-table{font-size:14px;font-variant-numeric:tabular-nums}
.data-table th,.data-table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.data-table th{
  font-family:var(--mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.14em;
  color:var(--muted);
  text-transform:uppercase;
}
.data-table td{color:var(--muted)}
.data-table td.num{font-family:var(--mono);font-size:19px;font-weight:600;color:var(--white);text-align:right}
.data-table tbody tr{transition:background-color var(--t-fast) ease}
.data-table tbody tr:hover{background:rgba(53,242,198,.06)}

.stat{
  font-family:var(--mono);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  font-size:clamp(44px,6vw,88px);
  line-height:1;
  letter-spacing:-.02em;
  color:var(--white);
}
.stat--accent{color:var(--cyan)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid var(--line);
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--muted);
}
.tag--orange{border-color:var(--orange);color:var(--orange)}
.tag--purple{border-color:var(--purple);color:var(--purple)}
.tag--warn{border-color:var(--warn);color:var(--warn)}

/* ---------- 10. 正文 ---------- */
.prose{font-size:16px;line-height:1.75;color:var(--muted)}
.prose > * + *{margin-top:16px}
.prose h2,.prose h3{color:var(--white);margin-top:32px}
.prose p,.prose li{max-width:34em}
.prose ul{display:flex;flex-direction:column;gap:8px}
.prose ul li{padding-left:18px;position:relative}
.prose ul li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:8px;height:1px;background:var(--cyan);
}
.prose a{color:var(--cyan);border-bottom:1px solid var(--cyan-deep)}
.prose a:hover{color:var(--white);border-bottom-color:var(--white)}
.prose strong{color:var(--white)}

/* ---------- 11. 图片容器 ---------- */
.media-frame{
  position:relative;
  border:1px solid var(--line);
  background:var(--panel);
  overflow:hidden;
  aspect-ratio:16/9;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame__img{
  width:100%;height:100%;object-fit:cover;
  filter:saturate(.85) contrast(1.06) brightness(.86);
  transition:filter var(--t-mid) ease,transform var(--t-mid) ease;
}
.media-frame:hover .media-frame__img{filter:saturate(1) contrast(1.08) brightness(.95);transform:scale(1.01)}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(6,18,14,.35) 0%,rgba(6,18,14,0) 45%,rgba(6,18,14,.8) 100%);
}
.media-frame__caption{
  position:absolute;
  left:14px;bottom:12px;
  z-index:2;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--cyan);
}

/* ---------- 12. 动效协议 ---------- */
html.js [data-reveal]{
  opacity:0;
  transform:translateY(8px);
  transition:opacity var(--t-mid) ease,transform var(--t-mid) ease;
}
html.js [data-reveal].is-visible{opacity:1;transform:none}

.scroll-progress{
  position:fixed;
  top:0;left:0;
  height:2px;
  width:0;
  z-index:70;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--orange) 100%);
  pointer-events:none;
}

/* ---------- 13. 响应式 ---------- */
@media (max-width:1200px){
  :root{--gutter:36px}
  .footer__grid{grid-template-columns:minmax(240px,1.3fr) repeat(3,minmax(110px,1fr));gap:24px}
}
@media (max-width:1080px){
  :root{--gutter:28px}
  .rail-layout{grid-template-columns:1fr}
  .rail{
    position:static;
    border-right:0;
    border-bottom:1px solid var(--line);
    padding:0 0 20px;
    margin-bottom:24px;
  }
  .main-col{padding-left:0}
  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__cols{grid-column:span 2;grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:860px){
  .nav-toggle{display:inline-flex}
  .site-nav{max-height:0;overflow:hidden;transition:max-height var(--t-mid) ease}
  .site-header[data-open] .site-nav{max-height:70vh;overflow-y:auto}
  .site-nav__list{flex-direction:column}
  .site-nav__item{border-right:0;border-left:0;border-top:1px solid var(--line)}
  .site-nav__item:first-child{border-left:0;border-top:0}
  .site-nav__link{padding:14px 0}
  .site-nav__link[aria-current="page"]{background:rgba(53,242,198,.06)}
  .cta-register{margin-left:auto;padding:9px 12px}
  .col-4,.col-6,.col-8{grid-column:span 12}
  .footer__cols{grid-template-columns:1fr 1fr;gap:20px}
  .footer__col{padding-left:14px}
}
@media (max-width:600px){
  :root{--gutter:18px}
  body{font-size:15.5px}
  .status-strip__meta{display:none}
  .brand__slogan{letter-spacing:.14em}
  .masthead{gap:12px;padding-block:14px}
  .frame{padding:18px}
  .footer__grid{grid-template-columns:1fr;padding-block:38px 26px}
  .footer__cols{grid-column:span 1;grid-template-columns:1fr;gap:18px}
  .footer__base{flex-direction:column;align-items:flex-start}
}

/* ---------- 14. 无障碍偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.js [data-reveal]{opacity:1;transform:none}
  .scroll-progress{display:none}
}