/* ============================================================
   F88体育官站 · 共享层
   夜间赛场指挥中心 / 框架式导航 / 堆叠画板
   ============================================================ */

:root{
  --ink:#06120E;
  --panel-1:#0C2018;
  --panel-2:#12352A;
  --line:#1E4C3E;
  --paper:#E8EEE9;
  --muted:#9FB3AA;
  --cyan:#37F5C4;
  --orange:#FF7A2F;
  --cream:#E7E1D3;
  --white:#FFFFFF;

  --rail:266px;
  --wrap:1200px;

  --font-cn:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --ease-score:cubic-bezier(0.2,0.7,0.2,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 620px at 72% -12%,rgba(55,245,196,.075),transparent 62%),
    radial-gradient(880px 520px at 4% 108%,rgba(255,122,47,.055),transparent 60%);
  background-attachment:fixed;
  background-repeat:no-repeat;
  color:var(--paper);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit}
a{color:var(--paper);text-decoration:none}
a:hover{color:var(--white)}
hr{border:0}
strong,b{font-weight:700;color:var(--white)}

/* ---------- 焦点与无障碍 ---------- */
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.skip-link{
  position:fixed;
  top:8px;left:8px;
  z-index:200;
  transform:translateY(-200%);
  padding:10px 16px;
  background:var(--cream);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  border:1px solid var(--ink);
  transition:transform .18s var(--ease-score);
}
.skip-link:focus{transform:translateY(0);color:var(--ink)}
#main-content{scroll-margin-top:84px}

/* ============================================================
   头部：框架式索引栏
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:linear-gradient(180deg,var(--panel-1) 0%,var(--ink) 78%);
  border-bottom:1px solid var(--line);
  color:var(--paper);
}
.site-header__top{
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 16px;
}

/* 品牌 */
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
  color:var(--paper);
  text-decoration:none;
}
.brand:hover{color:var(--white)}
.brand__mark{
  flex:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:5px 9px;
  background:var(--cyan);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:15px;
  font-weight:700;
  letter-spacing:.06em;
  border:1px solid var(--cyan);
}
.brand__text{display:flex;flex-direction:column;gap:2px;min-width:0}
.brand__line{
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.35;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.brand__tag{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.1em;
  line-height:1.4;
  color:var(--muted);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

/* 移动端索引开关 */
.nav-toggle{
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:9px 12px;
  background:transparent;
  color:var(--paper);
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  cursor:pointer;
  transition:border-color .18s,color .18s,background .18s;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;height:1px;
  background:currentColor;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;left:0;
  width:16px;height:1px;
  background:currentColor;
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.nav-toggle__label{line-height:1}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan);background:rgba(55,245,196,.07)}

/* 导航面板（移动优先） */
.site-nav{display:none}
.site-nav[data-open]{
  display:block;
  max-height:calc(100vh - 66px);
  overflow-y:auto;
  padding:6px 0 18px;
  background:var(--panel-1);
  border-top:1px solid var(--line);
}
.site-nav__list{display:block}
.site-nav__item{display:block}
.site-nav__link{
  display:grid;
  grid-template-columns:34px 1fr;
  align-items:baseline;
  gap:10px;
  padding:12px 18px;
  border-bottom:1px solid rgba(30,76,62,.65);
  color:var(--paper);
  font-size:15px;
  letter-spacing:.02em;
  transition:background .18s,color .18s;
}
.site-nav__link:hover{background:var(--panel-2);color:var(--white)}
.site-nav__index{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
  transition:color .18s;
}
.site-nav__label{display:block;line-height:1.5}
.site-nav__link[aria-current="page"]{color:var(--cyan);background:rgba(55,245,196,.06)}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--cyan)}
.site-nav__foot{
  display:grid;
  gap:10px;
  padding:16px 18px 4px;
  border-top:1px solid var(--line);
  margin-top:10px;
}
.site-nav__cta{width:100%}
.site-nav__note{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.12em;
  line-height:1.7;
  color:var(--muted);
}

/* 桌面：整条左栏作为页面外框 */
@media (min-width:1024px){
  body{padding-left:var(--rail)}
  .site-header{
    position:fixed;
    top:0;left:0;bottom:0;
    width:var(--rail);
    display:flex;
    flex-direction:column;
    border-bottom:0;
    border-right:1px solid var(--line);
    background:linear-gradient(180deg,var(--panel-1) 0%,var(--ink) 58%);
  }
  .site-header::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:0;
    height:6px;
    background:var(--cream);
  }
  .site-header__top{
    display:block;
    padding:24px 20px 20px;
    border-bottom:1px solid var(--line);
  }
  .brand{flex-direction:column;align-items:flex-start;gap:12px}
  .brand__mark{font-size:17px;padding:7px 12px}
  .brand__line{font-size:14px;white-space:normal;letter-spacing:.01em}
  .brand__tag{font-size:10.5px;white-space:normal;line-height:1.65}
  .nav-toggle{display:none}

  .site-nav,
  .site-nav[data-open]{
    display:flex;
    flex-direction:column;
    flex:1 1 auto;
    max-height:none;
    overflow-y:auto;
    padding:14px 0 0;
    background:transparent;
    border-top:0;
  }
  .site-nav__list{display:block}
  .site-nav__link{
    position:relative;
    display:grid;
    grid-template-columns:26px 1fr;
    gap:8px;
    padding:11px 20px 11px 22px;
    border-bottom:0;
    font-size:14px;
  }
  .site-nav__link::before{
    content:"";
    position:absolute;
    left:0;top:9px;bottom:9px;
    width:2px;
    background:transparent;
    transition:background .18s;
  }
  .site-nav__link:hover::before{background:var(--line)}
  .site-nav__link:hover{background:rgba(18,53,42,.6)}
  .site-nav__link[aria-current="page"]{background:rgba(55,245,196,.06)}
  .site-nav__link[aria-current="page"]::before{background:var(--cyan)}

  .site-nav__foot{
    margin-top:auto;
    padding:16px 20px 26px;
    border-top:1px solid var(--line);
    background:rgba(6,18,14,.5);
  }
  .site-nav__note{font-size:9.5px}
}

/* ============================================================
   通用版式与组件
   ============================================================ */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){.wrap{padding:0 32px}}
@media (min-width:1024px){.wrap{padding:0 44px;max-width:calc(var(--wrap) + 88px)}}

.section{padding:52px 0}
@media (min-width:1024px){.section{padding:80px 0}}

.eyebrow{
  display:block;
  margin:0 0 10px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}
.ghost-index{
  display:block;
  font-family:var(--font-mono);
  font-weight:200;
  font-size:clamp(72px,13vw,168px);
  line-height:.82;
  letter-spacing:-.03em;
  color:rgba(30,76,62,.72);
  user-select:none;
  pointer-events:none;
}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* 叠层画板 */
.panel{
  position:relative;
  background:var(--panel-1);
  border:1px solid var(--line);
  padding:26px 20px;
}
.panel--tagged{padding-top:52px}
.panel__tag{
  position:absolute;
  top:-1px;left:-1px;
  display:inline-block;
  padding:5px 11px;
  background:var(--cream);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
@media (min-width:1024px){.panel{padding:34px 30px}.panel--tagged{padding-top:58px}}

/* 记分牌数字 */
.stat{display:grid;gap:4px}
.stat__value{
  font-family:var(--font-mono);
  font-size:clamp(28px,4vw,46px);
  line-height:1;
  letter-spacing:.04em;
  color:var(--cyan);
}
.stat__unit{
  font-size:.42em;
  letter-spacing:.06em;
  color:var(--muted);
  margin-left:.06em;
}
.stat__label{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}
.stat--warm .stat__value{color:var(--orange)}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 18px;
  background:transparent;
  border:1px solid var(--line);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  text-align:center;
  cursor:pointer;
  transition:background .18s,color .18s,border-color .18s;
}
.btn:hover{background:var(--panel-2);border-color:var(--cyan);color:var(--white)}
.btn--ghost{border-color:var(--cyan);color:var(--cyan)}
.btn--ghost:hover{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}
.btn--solid{background:var(--orange);border-color:var(--orange);color:#0A120D;font-weight:700}
.btn--solid:hover{background:#FF9155;border-color:#FF9155;color:#0A120D}

/* 面包屑 */
.breadcrumb{padding:16px 0 0}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
}
.breadcrumb__item{display:inline-flex;align-items:center}
.breadcrumb__link{color:var(--muted);border-bottom:1px solid transparent}
.breadcrumb__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.breadcrumb__sep{color:var(--line);font-size:11px}
.breadcrumb__current{color:var(--paper)}

/* 图片容器基础规则（页面阶段放置占位/图片） */
.figure{
  position:relative;
  margin:0;
  border:1px solid var(--line);
  background:var(--panel-2);
  overflow:hidden;
}
.figure__media{
  position:relative;
  width:100%;
  aspect-ratio:16 / 9;
  background-color:#0A1A14;
  background-image:
    linear-gradient(rgba(55,245,196,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(55,245,196,.07) 1px,transparent 1px),
    radial-gradient(120% 90% at 20% 0%,rgba(55,245,196,.16),transparent 58%),
    linear-gradient(160deg,var(--panel-2),#050F0B 78%);
  background-size:28px 28px,28px 28px,auto,auto;
  overflow:hidden;
}
.figure__media img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.72) contrast(1.05);
}
.figure--wide .figure__media{aspect-ratio:21 / 9}
.figure--tall .figure__media{aspect-ratio:3 / 4}
.figure__caption{
  display:block;
  padding:9px 12px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
  background:rgba(6,18,14,.6);
}

/* 可展开内容组 */
.disclosure{border-top:1px solid var(--line)}
.disclosure:last-child{border-bottom:1px solid var(--line)}
.disclosure__btn{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  padding:16px 0;
  background:transparent;
  border:0;
  color:var(--paper);
  font-family:var(--font-cn);
  font-size:16px;
  font-weight:700;
  letter-spacing:.01em;
  text-align:left;
  cursor:pointer;
  transition:color .18s;
}
.disclosure__btn:hover{color:var(--cyan)}
.disclosure__sign{
  flex:none;
  font-family:var(--font-mono);
  font-size:15px;
  line-height:1;
  color:var(--cyan);
  transition:transform .26s var(--ease-score),color .18s;
}
.disclosure__btn[aria-expanded="true"]{color:var(--cyan)}
.disclosure__btn[aria-expanded="true"] .disclosure__sign{transform:rotate(90deg)}
.disclosure__panel{overflow:hidden;transition:height .26s var(--ease-score)}
.disclosure__panel[hidden]{display:none}
.disclosure__body{
  padding:0 0 20px;
  font-size:16px;
  line-height:1.75;
  color:var(--paper);
  max-width:38em;
}

/* 滚动显现 */
html.js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .4s var(--ease-score),transform .4s var(--ease-score);
}
html.js [data-reveal].is-visible{opacity:1;transform:none}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:40px;
  background:var(--panel-1);
  border-top:1px solid var(--line);
  color:var(--paper);
}
.footer-scale{
  display:flex;
  align-items:flex-end;
  height:18px;
  background:var(--ink);
  border-bottom:1px solid var(--line);
}
.footer-scale__tick{
  flex:1 1 0;
  height:5px;
  border-left:1px solid var(--line);
}
.footer-scale__tick:nth-child(4n+1){height:12px;border-left-color:var(--cyan)}

.footer-grid{
  display:grid;
  gap:32px;
  padding:38px 20px 28px;
  max-width:var(--wrap);
  margin:0 auto;
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px 28px;padding:44px 32px 30px}
}
@media (min-width:1024px){
  .footer-grid{
    grid-template-columns:1.5fr 1fr 1fr 1fr 1.4fr;
    gap:34px 30px;
    padding:56px 44px 36px;
  }
}

.footer-brand{display:grid;gap:14px;align-content:start}
.brand--footer{align-items:flex-start;gap:12px;flex-wrap:wrap}
.brand--footer .brand__mark{font-size:16px;padding:6px 10px}
.brand--footer .brand__line{font-size:14px;white-space:normal}
.brand--footer .brand__tag{font-size:10px;white-space:normal;line-height:1.7}
.footer-brand__meta{
  max-width:26em;
  font-size:13px;
  line-height:1.8;
  color:var(--muted);
  border-left:2px solid var(--line);
  padding-left:12px;
}

.footer-col{display:grid;gap:12px;align-content:start}
.footer-col__title{
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:400;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
  padding-bottom:8px;
  border-bottom:1px solid var(--line);
}
.footer-col__list{display:grid;gap:2px}
.footer-col__link{
  display:inline-block;
  padding:6px 0;
  font-size:14.5px;
  color:var(--paper);
  border-bottom:1px solid transparent;
  transition:color .18s,border-color .18s;
}
.footer-col__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer-col__link[aria-current="page"]{color:var(--cyan)}

.footer-contact{display:grid;gap:14px;align-content:start}
.footer-contact__list{display:grid;gap:8px}
.footer-contact__row{
  display:grid;
  grid-template-columns:44px 1fr;
  gap:10px;
  align-items:baseline;
  padding-bottom:8px;
  border-bottom:1px solid rgba(30,76,62,.55);
}
.footer-contact__label{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
}
.footer-contact__value{font-size:13.5px;line-height:1.7;color:var(--paper);word-break:break-word}
.footer-contact__cta{justify-self:start;margin-top:2px}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding:16px 20px 22px;
  max-width:var(--wrap);
  margin:0 auto;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--muted);
}
@media (min-width:768px){.footer-legal{padding:16px 32px 24px}}
@media (min-width:1024px){.footer-legal{padding:16px 44px 26px}}
.footer-legal__line{text-transform:uppercase}
.footer-legal__copy{letter-spacing:.08em}

/* ============================================================
   动效降级
   ============================================================ */
@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}
  .disclosure__sign{transition:none}
}