/* ===== B体育主站 · 共享样式 /assets/site.css ===== */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;min-height:100%}
img,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,h5,p,figure,dl,dd,blockquote{margin:0}
a{color:inherit}
table{border-collapse:collapse;width:100%}
main{display:block}
#main-content{scroll-margin-top:130px}
[id]{scroll-margin-top:130px}

:root{
  --ink:#0A1A2F;
  --ink-2:#102C4A;
  --lime:#C8FF3D;
  --lime-soft:#E8FFB0;
  --home:#FF8A3D;
  --away:#43D5E8;
  --amber:#F2B93F;
  --paper:#F4E9D8;
  --mist:#8FA6BC;
  --shadow:#050D18;
  --red:#E5443B;
  --line:rgba(143,166,188,.28);
  --bd:2px solid var(--shadow);
  --bd-line:2px solid var(--line);
  --hard:6px 6px 0 var(--shadow);
  --hard-sm:4px 4px 0 var(--shadow);
  --wrap:1240px;
  --gap:clamp(16px,2.4vw,32px);
  --pad:clamp(18px,2.6vw,34px);
  --font:"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;
  --ease:cubic-bezier(.2,.6,.2,1);
}

body{
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(143,166,188,.065) 1px,transparent 1px),
    linear-gradient(90deg,rgba(143,166,188,.065) 1px,transparent 1px);
  background-size:48px 48px;
  color:var(--paper);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  overflow-x:hidden;
}

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

/* ---------- 排版 ---------- */
h1,h2,h3,h4{font-weight:700;letter-spacing:-.02em;line-height:1.22}
.display{font-size:clamp(38px,6.6vw,96px);font-weight:700;letter-spacing:-.03em;line-height:1.02}
.headline{font-size:clamp(22px,2.7vw,34px);font-weight:700;letter-spacing:-.02em;line-height:1.24}
.subhead{font-size:clamp(17px,1.5vw,20px);font-weight:700;letter-spacing:-.01em}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--lime)}
.num,.footer__val--mono{font-family:var(--mono);font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.tag{display:inline-block;padding:3px 10px;font-size:12px;font-weight:700;letter-spacing:.08em;background:var(--lime-soft);color:var(--shadow);border:2px solid var(--shadow);line-height:1.6}
.tag--home{background:var(--home)}
.tag--away{background:var(--away)}
.tag--amber{background:var(--amber)}
.tag--ink{background:var(--ink-2);color:var(--lime);border-color:var(--lime)}

.section-head{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:12px 18px;
  padding-bottom:14px;margin-bottom:clamp(18px,3vw,32px);
  border-bottom:var(--bd-line);
}
.section-head__index{
  font-family:var(--mono);font-size:13px;font-weight:600;color:var(--lime);
  border:2px solid var(--lime);padding:1px 8px;line-height:1.6;
}

/* ---------- 容器与栅格 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding-left:var(--gap);padding-right:var(--gap)}
.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))}

.panel{
  background:var(--ink-2);
  border:var(--bd);
  box-shadow:var(--hard);
  padding:var(--pad);
  position:relative;
}
.panel--lime{border-color:var(--lime)}
.panel--flat{box-shadow:none}

.prose{max-width:34em;font-size:16px;line-height:1.75}
.prose p{margin-bottom:1.4em}
.prose h2{margin:1.1em 0 .6em;font-size:clamp(20px,2vw,25px)}
.prose h3{margin:1em 0 .5em;font-size:20px}
.prose ul{margin:0 0 1.4em;padding-left:0}
.prose li{position:relative;padding-left:20px;margin-bottom:.5em}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:9px;height:9px;background:var(--lime)}
.prose a{color:var(--lime);text-decoration:underline;text-underline-offset:3px}

.breadcrumb{padding-top:20px;padding-bottom:4px}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:6px;font-size:12.5px;letter-spacing:.06em;color:var(--mist)}
.breadcrumb li+li::before{content:"/";margin-right:6px;color:var(--mist)}
.breadcrumb a{color:var(--mist);text-decoration:none}
.breadcrumb a:hover{color:var(--lime)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;font-family:inherit;font-size:14px;font-weight:700;
  letter-spacing:.04em;line-height:1.2;text-decoration:none;cursor:pointer;
  background:var(--ink-2);color:var(--paper);
  border:var(--bd);box-shadow:var(--hard-sm);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:8px 8px 0 var(--shadow)}
.btn:active{transform:translate(0,0);box-shadow:2px 2px 0 var(--shadow)}
.btn--primary{background:var(--lime);color:var(--shadow)}
.btn--primary:hover{background:var(--lime-soft)}
.btn--ghost{background:transparent;color:var(--paper);border-color:var(--mist)}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime)}
.btn--block{width:100%}

/* ---------- 图片容器（页面阶段放入 <img>） ---------- */
.frame{
  position:relative;display:block;overflow:hidden;
  border:var(--bd);box-shadow:var(--hard);
  background:
    linear-gradient(135deg,var(--ink) 0%,var(--ink-2) 55%,rgba(200,255,61,.18) 100%);
}
.frame>img{width:100%;height:100%;object-fit:cover}
.frame::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:
    linear-gradient(rgba(143,166,188,.12) 1px,transparent 1px),
    linear-gradient(90deg,rgba(143,166,188,.12) 1px,transparent 1px);
  background-size:34px 34px;
}
.frame--21x9{aspect-ratio:21/9}
.frame--16x9{aspect-ratio:16/9}
.frame--4x3{aspect-ratio:4/3}
.frame--1x1{aspect-ratio:1/1}
.frame__caption{
  position:absolute;left:0;bottom:0;z-index:2;
  padding:7px 12px;background:var(--shadow);color:var(--lime);
  font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.04em;
}

/* ---------- 头部 ---------- */
.skip-link{
  position:absolute;left:14px;top:-70px;z-index:120;
  padding:10px 16px;background:var(--lime);color:var(--shadow);
  font-size:14px;font-weight:700;text-decoration:none;border:var(--bd);
  transition:top .22s var(--ease);
}
.skip-link:focus{top:14px}

.site-header{position:relative;z-index:60}

/* 琥珀公告条 */
.announce{
  display:flex;align-items:stretch;
  background:linear-gradient(90deg,#F2B93F 0%,#FFD98A 50%,#F2B93F 100%);
  color:var(--shadow);
  border-bottom:var(--bd);
  font-size:13px;font-weight:700;letter-spacing:.04em;
  overflow:hidden;
}
.announce__tag{
  flex:0 0 auto;display:flex;align-items:center;
  padding:9px 14px;background:var(--shadow);color:var(--amber);
  border-right:2px solid var(--shadow);white-space:nowrap;
}
.announce__viewport{flex:1 1 auto;min-width:0;overflow:hidden;display:flex;align-items:center}
.announce__track{
  display:flex;align-items:center;gap:56px;
  width:max-content;padding:9px 28px;
  animation:ticker 34s linear infinite;
}
.announce:hover .announce__track,
.announce:focus-within .announce__track{animation-play-state:paused}
.announce__item{white-space:nowrap}
@keyframes ticker{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* 刊头 */
.masthead{background:var(--ink);border-bottom:var(--bd-line)}
.masthead__inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:var(--gap);
  max-width:var(--wrap);margin:0 auto;
  padding:clamp(20px,3vw,36px) var(--gap);
}
.masthead__center{text-align:center}
.masthead__side{display:flex;align-items:center;min-width:0}
.masthead__side--end{justify-content:flex-end;text-align:right}
.brand{display:block;text-decoration:none;color:var(--paper)}
.brand__name{
  display:block;font-size:clamp(30px,5vw,62px);font-weight:700;
  letter-spacing:-.03em;line-height:1;white-space:nowrap;
}
.brand__mark{color:var(--lime)}
.brand:hover .brand__name{color:var(--lime-soft)}
.brand__tagline{
  display:block;margin-top:10px;font-size:12.5px;font-weight:700;
  letter-spacing:.16em;color:var(--mist);
}
.sync-state{
  display:inline-block;max-width:230px;margin:0;
  padding:8px 12px;line-height:1.5;font-family:var(--mono);
  font-size:12.5px;letter-spacing:.02em;color:var(--lime-soft);
  background:rgba(200,255,61,.1);
  border:2px solid var(--lime);border-left-width:6px;
}
.masthead__actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end}

/* 吸顶条：导航 + 数据条 */
.header-bar{
  position:sticky;top:0;z-index:70;
  background:var(--ink-2);
  border-bottom:var(--bd);
}
.header-bar__inner{
  position:relative;display:flex;align-items:center;justify-content:center;
  max-width:var(--wrap);margin:0 auto;padding:0 var(--gap);
}
.nav-toggle{
  display:none;align-items:center;gap:12px;
  border:0;background:var(--ink-2);color:var(--lime);
  font-size:14px;font-weight:700;letter-spacing:.14em;
  cursor:pointer;
}
.nav-toggle__bars{position:relative;display:block;width:22px;height:2px;background:var(--lime)}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:22px;height:2px;background:var(--lime);
  transition:transform .25s var(--ease);
}
.nav-toggle__bars::before{top:-7px}
.nav-toggle__bars::after{top:7px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-7px) rotate(-45deg)}

.site-nav{display:block}
.nav-list{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:clamp(4px,1.8vw,24px)}
.nav-link{
  display:block;padding:15px 2px;
  font-size:15px;font-weight:700;letter-spacing:.02em;text-decoration:none;
  color:var(--paper);border-bottom:3px solid transparent;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.nav-link:hover{color:var(--lime);border-bottom-color:var(--lime-soft)}
.nav-link[aria-current="page"]{color:var(--lime);border-bottom-color:var(--lime)}

.data-strip{background:var(--shadow);border-top:1px solid var(--line)}
.data-strip__list{
  display:flex;flex-wrap:wrap;gap:6px clamp(14px,3vw,34px);
  max-width:var(--wrap);margin:0 auto;padding:8px var(--gap);
  font-size:12.5px;letter-spacing:.04em;
}
.data-strip__item{display:flex;align-items:center;gap:8px}
.data-strip__key{color:var(--mist)}
.data-strip__val{font-family:var(--mono);font-weight:600;color:var(--lime)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:clamp(48px,8vw,110px);
  background:var(--shadow);
  border-top:6px solid var(--lime);
}
.footer__grid{
  display:grid;grid-template-columns:1.5fr 1fr 1.6fr;
  gap:clamp(22px,4vw,56px);
  max-width:var(--wrap);margin:0 auto;
  padding:clamp(34px,5vw,64px) var(--gap) clamp(24px,3vw,40px);
}
.footer__brandline{
  font-size:clamp(19px,2.2vw,27px);font-weight:700;letter-spacing:-.02em;line-height:1.35;
  padding-left:14px;border-left:6px solid var(--lime);
}
.footer__meta{
  margin-top:16px;font-size:13.5px;line-height:1.75;color:var(--mist);max-width:32em;
}
.footer__title{
  font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--lime);
  padding-bottom:10px;margin-bottom:14px;border-bottom:1px solid var(--line);
}
.footer__list{display:grid;gap:8px}
.footer__list--plain{gap:0}
.footer__link{
  display:block;padding:10px 12px;
  font-size:14px;font-weight:700;letter-spacing:.04em;text-decoration:none;
  color:var(--paper);border:2px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.footer__link:hover{color:var(--lime);border-color:var(--lime);background:rgba(200,255,61,.08)}
.footer__row{
  display:grid;grid-template-columns:56px 1fr;gap:10px;
  padding:10px 0;border-bottom:1px dashed var(--line);
  font-size:14px;line-height:1.7;
}
.footer__key{color:var(--mist);font-size:12px;letter-spacing:.08em;padding-top:3px}
.footer__val{color:var(--paper);word-break:break-word}
.footer__note{
  margin-top:16px;padding-left:12px;border-left:3px solid var(--amber);
  font-size:12.5px;line-height:1.7;color:var(--mist);
}
.footer__base{background:var(--ink);border-top:1px solid var(--line)}
.footer__base-inner{
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  max-width:var(--wrap);margin:0 auto;padding:16px var(--gap);
  font-size:12.5px;letter-spacing:.04em;color:var(--mist);
}
.footer__legal{color:var(--mist)}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:clamp(14px,3vw,28px);bottom:clamp(14px,3vw,28px);z-index:90;
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 16px;cursor:pointer;
  background:var(--lime);color:var(--shadow);
  border:var(--bd);box-shadow:var(--hard-sm);
  font-family:inherit;font-size:13px;font-weight:700;letter-spacing:.08em;line-height:1;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s linear,box-shadow .2s var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{box-shadow:8px 8px 0 rgba(5,13,24,.7)}

/* ---------- 显现与目录高亮 ---------- */
.js [data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .4s var(--ease),transform .4s var(--ease);
}
.js [data-reveal][data-revealed]{opacity:1;transform:none}

[data-toc-link]{
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
[data-toc-link][aria-current]{
  color:var(--lime);border-color:var(--lime);background:rgba(200,255,61,.09);
}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__contact{grid-column:1 / -1}
}

@media (max-width:880px){
  #main-content,[id]{scroll-margin-top:150px}
  .masthead__inner{grid-template-columns:1fr;gap:16px;text-align:center}
  .masthead__side,
  .masthead__side--end{justify-content:center;text-align:center}
  .masthead__actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:100%;justify-content:stretch}
  .masthead__actions .btn{width:100%}
  .sync-state{max-width:none}
  .header-bar__inner{flex-wrap:wrap;justify-content:flex-start;padding:0;gap:0}
  .nav-toggle{display:flex;width:100%;padding:15px var(--gap)}
  .site-nav{display:none;width:100%;border-top:1px solid var(--line)}
  .site-nav[data-open]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;padding:4px 0 10px}
  .nav-link{
    padding:14px var(--gap);border-bottom:1px solid var(--line);
    border-left:5px solid transparent;border-radius:0;
  }
  .nav-link:hover{border-bottom-color:var(--line);border-left-color:var(--lime-soft)}
  .nav-link[aria-current="page"]{border-bottom-color:var(--line);border-left-color:var(--lime)}
  .grid--2,.grid--3{grid-template-columns:1fr}
  .frame{box-shadow:var(--hard-sm)}
}

@media (max-width:640px){
  .announce__tag{display:none}
  .announce__track{padding:9px 18px;gap:40px}
  .footer__grid{grid-template-columns:1fr}
  .footer__row{grid-template-columns:1fr;gap:2px}
  .footer__key{padding-top:0}
  .footer__base-inner{flex-direction:column;gap:6px}
  .masthead__actions{grid-template-columns:1fr}
  .to-top{padding:11px 14px}
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .announce__track{animation:none;transform:none}
  .js [data-reveal]{opacity:1;transform:none}
  .to-top{transform:none}
}