/* ============================================================
   完美体育主站 · 共享样式 /assets/site.css
   深夜战术室数据大屏 · 左右分屏 · 切角面板
   ============================================================ */

:root{
  --ink:#061020;
  --panel:#0C1E33;
  --panel-deep:#0A1828;
  --zone-teal:#0F3340;
  --zone-wine:#6E1F38;
  --zone-indigo:#1B1035;
  --cyan:#2FE0C8;
  --cyan-dim:rgba(47,224,200,.10);
  --orange:#FF7A1A;
  --amber:#F2C14E;
  --silver:#C9D6DF;
  --white:#EEF4F9;
  --muted:#9FB3C2;
  --line:rgba(201,214,223,.20);
  --line-strong:rgba(201,214,223,.42);
  --font-head:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --cut:10px;
  --shell-max:1440px;
  --pad:clamp(16px,4vw,40px);
  --header-h:72px;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:96px;
}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  color:var(--white);
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(201,214,223,.032) 1px,transparent 1px),
    linear-gradient(90deg,rgba(201,214,223,.032) 1px,transparent 1px);
  background-size:64px 64px;
  min-height:100vh;
}
h1,h2,h3,h4,h5{
  font-family:var(--font-head);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.01em;
  margin:0;
}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img,svg,video{max-width:100%;height:auto;display:block;}
a{color:var(--cyan);}
button{font:inherit;}
::selection{background:var(--orange);color:#170800;}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}

/* ---------- 容器与网格 ---------- */
.shell{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--pad);
}
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2vw,28px);
}
@media (max-width:900px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));}
}
@media (max-width:600px){
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr));}
}

/* ---------- 排版小件 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";
  width:26px;
  height:2px;
  background:var(--orange);
  flex:0 0 auto;
}
.section-head{
  display:grid;
  gap:12px;
  margin-bottom:clamp(20px,3vw,34px);
}
.section-head__title{
  font-size:clamp(24px,3.1vw,38px);
  color:var(--white);
}
.section-head__desc{
  color:var(--muted);
  max-width:62ch;
  line-height:1.8;
  font-size:15.5px;
}
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding-block:14px;
  font-size:13px;
  color:var(--muted);
  font-family:var(--font-mono);
  letter-spacing:.04em;
}
.breadcrumb a{
  color:var(--silver);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.breadcrumb a:hover{color:var(--cyan);border-bottom-color:var(--cyan);}
.breadcrumb__sep{color:rgba(201,214,223,.38);}

/* ---------- 正文容器 ---------- */
.prose{
  max-width:68ch;
  color:var(--silver);
  font-size:16px;
  line-height:1.8;
}
.prose > * + *{margin-top:1.05em;}
.prose h2{
  font-size:clamp(22px,2.4vw,30px);
  color:var(--white);
  margin-top:1.9em;
}
.prose h3{
  font-size:clamp(18px,1.8vw,22px);
  color:var(--white);
  margin-top:1.6em;
}
.prose ul{list-style:none;padding-left:0;}
.prose ul li{
  position:relative;
  padding-left:22px;
  margin-top:.5em;
}
.prose ul li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.72em;
  width:8px;
  height:2px;
  background:var(--orange);
}
.prose a{
  color:var(--cyan);
  text-underline-offset:3px;
}
.prose strong{color:var(--white);}
.prose table{
  width:100%;
  border-collapse:collapse;
  font-size:14.5px;
}
.prose th,.prose td{
  border-bottom:1px solid var(--line);
  padding:12px 10px;
  text-align:left;
}
.prose th{color:var(--muted);font-weight:600;letter-spacing:.06em;}

/* ---------- 分区带 ---------- */
.zone{
  position:relative;
  padding-block:clamp(48px,7vw,96px);
}
.zone::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:repeating-linear-gradient(90deg,var(--line-strong) 0 14px,transparent 14px 30px);
}
.zone--teal{background:var(--zone-teal);}
.zone--wine{background:var(--zone-wine);}
.zone--indigo{background:var(--zone-indigo);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 22px;
  font-family:var(--font-head);
  font-size:14.5px;
  font-weight:700;
  letter-spacing:.1em;
  text-decoration:none;
  border:1px solid transparent;
  background:transparent;
  color:var(--white);
  cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn--primary{
  background:var(--orange);
  color:#1A0A00;
  font-weight:800;
}
.btn--primary:hover{background:#FF9040;}
.btn--ghost{
  border-color:var(--line-strong);
  color:var(--silver);
}
.btn--ghost:hover{
  border-color:var(--cyan);
  color:var(--white);
  background:var(--cyan-dim);
}
.btn--cyan{
  background:var(--cyan);
  color:#03201C;
  font-weight:800;
}
.btn--cyan:hover{background:#5CEBD9;}

/* ---------- 芯片 ---------- */
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 13px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(201,214,223,.04);
  color:var(--silver);
  font-size:12.5px;
  letter-spacing:.04em;
  cursor:pointer;
  transition:border-color .16s ease,color .16s ease,background-color .16s ease;
}
.chip:hover{border-color:var(--cyan);color:var(--white);}
.chip[aria-pressed="true"]{
  background:var(--cyan);
  border-color:var(--cyan);
  color:var(--ink);
  font-weight:700;
}

/* ---------- 面板与卡片 ---------- */
.panel{
  background:var(--panel);
  border:1px solid var(--line);
  padding:clamp(18px,2.4vw,28px);
}
.panel--cut{
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
}

/* ---------- 数据仪表 ---------- */
.stat{
  display:grid;
  gap:6px;
}
.stat__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(34px,5vw,64px);
  line-height:1;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--white);
}
.stat__value--cyan{color:var(--cyan);}
.stat__value--orange{color:var(--orange);}
.stat__label{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--muted);
}

/* ---------- 标签页 / 分段切换 ---------- */
.tabs{width:100%;}
.tabs__list{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  border-bottom:1px solid var(--line);
}
.tabs__btn{
  appearance:none;
  background:transparent;
  border:0;
  border-bottom:2px solid transparent;
  padding:12px 16px;
  color:var(--muted);
  font-family:var(--font-head);
  font-size:14px;
  letter-spacing:.08em;
  cursor:pointer;
  transition:color .16s ease,border-color .16s ease;
}
.tabs__btn:hover{color:var(--white);}
.tabs__btn[aria-selected="true"]{
  color:var(--white);
  font-weight:800;
  border-bottom-color:var(--orange);
}
.tabs__panel{
  display:none;
  padding-top:22px;
}
.tabs__panel.is-active{display:block;}

/* ---------- 图片容器 ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  background:var(--panel);
  border:1px solid var(--line);
}
.media__frame{
  position:relative;
  aspect-ratio:16 / 9;
  background:
    linear-gradient(135deg,#0C1E33 0%,#0F3340 55%,#1B1035 100%);
}
.media__frame img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.72) contrast(1.08) brightness(.82);
}
.media__frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(47,224,200,.085) 1px,transparent 1px),
    linear-gradient(90deg,rgba(47,224,200,.085) 1px,transparent 1px);
  background-size:30px 30px;
}
.media--tall .media__frame{aspect-ratio:4 / 5;}
.media--wide .media__frame{aspect-ratio:21 / 9;}
.media__caption{
  padding:12px 14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}

/* ---------- 左侧数据导航轨道 ---------- */
.rail{
  position:sticky;
  top:calc(var(--header-h) + 18px);
  align-self:start;
}
.rail__title{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:14px;
}
.rail__list{
  display:grid;
  gap:2px;
  border-left:1px solid var(--line);
}
.rail__link{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  margin-left:-1px;
  border-left:2px solid transparent;
  color:var(--muted);
  text-decoration:none;
  font-size:14px;
  transition:color .16s ease,background-color .16s ease,border-color .16s ease;
}
.rail__link:hover{
  color:var(--white);
  background:var(--cyan-dim);
}
.rail__link[aria-current="true"]{
  color:var(--white);
  border-left-color:var(--cyan);
  background:var(--cyan-dim);
}

/* ---------- 显现动画 ---------- */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .5s ease,transform .5s ease;
}
.reveal.is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:clamp(14px,3vw,28px);
  bottom:clamp(14px,3vw,28px);
  z-index:50;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  padding:0;
  background:var(--panel);
  border:1px solid var(--line-strong);
  color:var(--cyan);
  font-size:17px;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease,background-color .18s ease,border-color .18s ease;
}
.to-top.is-on{
  opacity:1;
  visibility:visible;
  transform:none;
}
.to-top:hover{
  background:rgba(47,224,200,.14);
  border-color:var(--cyan);
}

/* ---------- 跳至主要内容 ---------- */
.skip-link{
  position:absolute;
  left:12px;
  top:-64px;
  z-index:100;
  padding:10px 18px;
  background:var(--cyan);
  color:var(--ink);
  font-weight:700;
  font-size:14px;
  text-decoration:none;
  transition:top .18s ease;
}
.skip-link:focus{top:12px;}

/* ============================================================
   头部
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  color:var(--white);
  transition:background-color .25s ease,box-shadow .25s ease;
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(6,16,32,.95) 0%,rgba(6,16,32,.58) 66%,rgba(6,16,32,0) 100%);
  transition:opacity .25s ease;
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:transparent;
  transition:background-color .25s ease;
}
.site-header.is-stuck{
  background:var(--panel);
  box-shadow:0 14px 34px -26px #000;
}
.site-header.is-stuck::before{opacity:0;}
.site-header.is-stuck::after{background:var(--line);}
.site-header[data-open]{background:var(--panel);}
.site-header[data-open]::before{opacity:0;}

.header-progress{
  position:absolute;
  left:0;
  top:0;
  width:100%;
  height:2px;
  z-index:3;
  pointer-events:none;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--amber) 55%,var(--orange) 100%);
}

.header-inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(12px,1.8vw,28px);
  min-height:var(--header-h);
  padding-block:10px;
}

/* 品牌 */
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  text-decoration:none;
  color:inherit;
}
.brand__mark{
  position:relative;
  width:38px;
  height:38px;
  flex:0 0 auto;
  background:var(--ink);
  border:1px solid var(--line-strong);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
}
.brand__mark::before{
  content:"";
  position:absolute;
  left:8px;
  right:12px;
  top:9px;
  bottom:9px;
  border-left:2px solid var(--cyan);
  border-bottom:2px solid var(--cyan);
  transform:skewX(-16deg);
}
.brand__mark::after{
  content:"";
  position:absolute;
  right:6px;
  top:6px;
  width:8px;
  height:8px;
  background:var(--orange);
  clip-path:polygon(0 0,100% 0,100% 100%);
}
.brand__text{
  display:flex;
  flex-direction:column;
  line-height:1.16;
  min-width:0;
}
.brand__name{
  font-family:var(--font-head);
  font-size:19px;
  font-weight:800;
  letter-spacing:.16em;
}
.brand__tag{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:var(--muted);
  white-space:nowrap;
}

/* 主导航 */
.primary-nav{
  margin-left:auto;
}
.primary-nav__list{
  display:flex;
  align-items:center;
  gap:clamp(2px,1.1vw,16px);
}
.primary-nav__link{
  position:relative;
  display:block;
  padding:10px 6px;
  color:var(--silver);
  font-size:14.5px;
  letter-spacing:.06em;
  text-decoration:none;
  transition:color .18s ease;
}
.primary-nav__link:hover{color:var(--white);}
.primary-nav__link::after{
  content:"";
  position:absolute;
  left:6px;
  right:6px;
  bottom:4px;
  height:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s ease;
}
.primary-nav__link:hover::after{transform:scaleX(1);}
.primary-nav__link[aria-current="page"]{
  color:var(--white);
  font-weight:800;
}
.primary-nav__link[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--orange);
}

/* 工具区 */
.header-tools{
  display:flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
}
.tool-link{
  display:inline-flex;
  align-items:center;
  padding:9px 13px;
  border:1px solid var(--line);
  color:var(--silver);
  font-size:13px;
  letter-spacing:.05em;
  text-decoration:none;
  white-space:nowrap;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.tool-link--ghost:hover{
  border-color:var(--cyan);
  color:var(--white);
  background:var(--cyan-dim);
}
.tool-link--legacy{
  border-color:rgba(255,122,26,.5);
  color:#FFC08A;
}
.tool-link--legacy:hover{
  border-color:var(--orange);
  background:rgba(255,122,26,.14);
  color:#FFD9B8;
}
.tool-link--mail{
  border-color:var(--cyan);
  background:var(--cyan);
  color:var(--ink);
  font-weight:800;
}
.tool-link--mail:hover{background:#5CEBD9;border-color:#5CEBD9;}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 13px;
  background:transparent;
  border:1px solid var(--line-strong);
  color:var(--white);
  font-size:13px;
  letter-spacing:.08em;
  cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan);}
.nav-toggle__bars{
  display:grid;
  gap:4px;
  width:16px;
}
.nav-toggle__bars span{
  display:block;
  height:2px;
  background:var(--cyan);
}

/* ---------- 头部响应式 ---------- */
@media (max-width:1140px){
  .brand__tag{display:none;}
}
@media (max-width:980px){
  .header-inner{gap:10px;}
  .nav-toggle{display:inline-flex;}
  .primary-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    margin-left:0;
    display:none;
    background:var(--panel);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding:6px var(--pad) 18px;
    max-height:min(70vh,520px);
    overflow-y:auto;
  }
  [data-site-header][data-open] .primary-nav{display:block;}
  .primary-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .primary-nav__link{
    padding:14px 4px;
    font-size:16px;
    border-bottom:1px solid rgba(201,214,223,.12);
  }
  .primary-nav__link::after{display:none;}
  .primary-nav__link[aria-current="page"]{
    border-bottom-color:var(--cyan);
    background:var(--cyan-dim);
  }
  .header-tools{margin-left:auto;}
}
@media (max-width:640px){
  :root{--header-h:64px;}
  .tool-link--ghost{display:none;}
  .brand__mark{width:32px;height:32px;}
  .brand__name{font-size:17px;letter-spacing:.12em;}
}
@media (max-width:460px){
  .tool-link--legacy{display:none;}
  .nav-toggle__label{display:none;}
  .nav-toggle{padding:9px 11px;}
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  background:var(--panel-deep);
  border-top:1px solid var(--line);
  color:var(--silver);
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:100%;
  height:3px;
  background:linear-gradient(90deg,var(--cyan) 0 46px,var(--orange) 46px 74px,transparent 74px 100%);
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(220px,1.5fr) repeat(3,minmax(120px,1fr));
  gap:clamp(22px,3.5vw,52px);
  padding-top:clamp(38px,5vw,64px);
  padding-bottom:34px;
}
.footer-brand__name{
  font-family:var(--font-head);
  font-size:23px;
  font-weight:800;
  letter-spacing:.18em;
  color:var(--white);
}
.footer-brand__tag{
  margin-top:12px;
  font-size:13.5px;
  line-height:1.85;
  color:var(--muted);
  max-width:34ch;
}
.footer-brand__rule{
  height:1px;
  margin:18px 0;
  background:repeating-linear-gradient(90deg,var(--line-strong) 0 10px,transparent 10px 22px);
}
.footer-brand__note{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--amber);
  line-height:1.9;
}
.footer-col__title{
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:14px;
}
.footer-col__list{
  display:grid;
  gap:10px;
}
.footer-col__list a{
  color:var(--silver);
  font-size:14px;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.footer-col__list a:hover{
  color:var(--white);
  border-bottom-color:var(--orange);
}
.footer-contact{
  padding-top:18px;
  padding-bottom:16px;
  border-top:1px solid var(--line);
}
.footer-contact__line{
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:2;
  color:var(--muted);
  letter-spacing:.02em;
  word-break:break-word;
}
.footer-contact__label{
  color:var(--silver);
  letter-spacing:.1em;
  margin-right:6px;
}
.footer-contact__sep{
  color:rgba(201,214,223,.34);
  margin-inline:10px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 28px;
  padding-top:20px;
  padding-bottom:34px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}
.footer-bottom__legal{letter-spacing:.04em;}
.footer-bottom__links{
  display:flex;
  flex-wrap:wrap;
  gap:20px;
}
.footer-bottom__links a{
  color:var(--silver);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.footer-bottom__links a:hover{
  color:var(--cyan);
  border-bottom-color:var(--cyan);
}
.footer-bottom__copy{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
}
@media (max-width:900px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;}
  .footer-contact__sep{display:block;height:0;overflow:hidden;margin:0;}
}

/* ============================================================
   减弱动效
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    transition-duration:.01ms !important;
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
  }
  .reveal{opacity:1;transform:none;}
  .to-top{transform:none;}
}