/* ==========================================================================
   云体育主站 — 共享样式 /assets/site.css
   骨架：左侧品牌轨道 + 右侧内容机体（框架式导航）
   ========================================================================== */

/* ---------- 令牌 ---------- */
:root{
  --bg-deep:#070D1A;
  --bg-panel:#0F1B33;
  --line:#1C2A44;
  --muted:#8FA3C4;
  --cyan:#22E0D0;
  --flame:#FF5A2D;
  --white:#F2F6FF;
  --mint:#4BE18A;
  --amber:#FFC24B;

  --rail-w:88px;
  --bar-h:64px;

  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;

  --font-body:system-ui,-apple-system,"Segoe UI","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-narrow:"Oswald","Archivo Narrow","Noto Sans SC",system-ui,sans-serif;
  --font-mono:ui-monospace,"IBM Plex Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --maxw:1320px;
  --pad-x:clamp(18px,4vw,56px);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  position:relative;
  padding-left:var(--rail-w);
  padding-top:var(--bar-h);
  font-family:var(--font-body);
  font-size:15px;
  line-height:1.65;
  letter-spacing:.01em;
  color:var(--white);
  background-color:var(--bg-deep);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(58% 42% at 80% 6%,rgba(34,224,208,.10),transparent 70%),
    radial-gradient(52% 38% at 10% 92%,rgba(255,90,45,.075),transparent 72%);
}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img,svg,video{max-width:100%;display:block}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}

h1,.h1{font-family:var(--font-narrow);font-weight:700;font-size:clamp(26px,4.4vw,46px);line-height:1.12;letter-spacing:.005em}
h2,.h2{font-family:var(--font-narrow);font-weight:700;font-size:clamp(21px,3vw,32px);line-height:1.2}
h3,.h3{font-size:17px;font-weight:600;line-height:1.35}
p{overflow-wrap:break-word}

.mono{font-family:var(--font-mono)}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:700}
.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}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;top:10px;left:calc(var(--rail-w) + 14px);z-index:200;
  padding:10px 18px;border-radius:8px;
  background:var(--cyan);color:#04121A;font-weight:700;font-size:13.5px;
  transform:translateY(-200%);
  transition:transform .2s var(--ease);
}
.skip-link:focus-visible{transform:translateY(0);outline-offset:2px}

/* ---------- 品牌轨道 ---------- */
.brand-rail{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);z-index:110;
  display:flex;flex-direction:column;align-items:center;justify-content:space-between;
  padding:20px 0 24px;
  background:linear-gradient(180deg,#0B1426 0%,#070D1A 58%,#080F1F 100%);
  border-right:1px solid var(--line);
}
.brand-rail::after{
  content:"";position:absolute;top:0;right:-1px;width:2px;height:34%;
  background:linear-gradient(180deg,var(--cyan),rgba(34,224,208,0));
  opacity:.85;pointer-events:none;
}
.rail-brand{display:flex;flex-direction:column;align-items:center;gap:16px;color:var(--white);transition:color .16s var(--ease)}
.rail-brand:hover{color:var(--cyan)}
.rail-brand-mark{
  width:38px;height:38px;display:grid;place-items:center;
  border:1px solid rgba(34,224,208,.5);border-radius:11px;
  background:rgba(34,224,208,.07);
  font-family:var(--font-mono);font-size:15px;font-weight:700;color:var(--cyan);
}
.rail-brand-text{
  writing-mode:vertical-rl;text-orientation:upright;
  font-family:var(--font-narrow);font-size:14.5px;font-weight:700;letter-spacing:.36em;
}
.rail-status{
  margin:0;display:flex;flex-direction:column;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;color:var(--muted);
}
.rail-status-text{writing-mode:vertical-rl;text-orientation:upright;letter-spacing:.24em}
.status-dot{
  width:8px;height:8px;border-radius:50%;background:var(--mint);
  box-shadow:0 0 0 0 rgba(75,225,138,.55);
  animation:pulse-dot 2.6s var(--ease) infinite;
}
@keyframes pulse-dot{
  0%{box-shadow:0 0 0 0 rgba(75,225,138,.5)}
  70%{box-shadow:0 0 0 10px rgba(75,225,138,0)}
  100%{box-shadow:0 0 0 0 rgba(75,225,138,0)}
}

/* ---------- 顶栏 ---------- */
.header-bar{
  position:fixed;top:0;left:var(--rail-w);right:0;height:var(--bar-h);z-index:105;
  display:flex;align-items:center;gap:18px;
  padding:0 clamp(14px,2.4vw,30px);
  background:rgba(7,13,26,.86);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-bar::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;pointer-events:none;
  background:linear-gradient(90deg,var(--cyan) 0%,rgba(34,224,208,.2) 26%,transparent 62%);
  opacity:.75;
}
.bar-brand{
  display:none;align-items:center;
  font-family:var(--font-narrow);font-size:17px;font-weight:700;letter-spacing:.06em;
  color:var(--white);white-space:nowrap;
}
.bar-brand::before{content:"";width:8px;height:8px;margin-right:8px;border-radius:3px;background:var(--cyan)}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 13px;border:1px solid var(--line);border-radius:999px;
  font-size:13px;color:var(--muted);
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.nav-toggle:hover{color:var(--cyan);border-color:rgba(34,224,208,.5)}
.nav-toggle-box{display:flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle-box span{display:block;height:1.5px;background:currentColor;border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[data-open] .nav-toggle-box span:first-child{transform:translateY(2.75px) rotate(45deg)}
.nav-toggle[data-open] .nav-toggle-box span:last-child{transform:translateY(-2.75px) rotate(-45deg)}
.nav-toggle-text{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em}

.site-nav{flex:1 1 auto;min-width:0}
.nav-list{
  counter-reset:nav;
  display:flex;align-items:center;gap:2px;flex-wrap:nowrap;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.nav-list::-webkit-scrollbar{display:none}
.nav-list a{
  position:relative;display:flex;align-items:center;gap:7px;
  padding:9px 13px;border-radius:9px;
  color:var(--muted);font-size:13.5px;white-space:nowrap;
  transition:color .16s var(--ease),background-color .16s var(--ease);
}
.nav-list a::before{
  counter-increment:nav;content:counter(nav,decimal-leading-zero);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.04em;
  color:var(--cyan);opacity:.62;
  transition:opacity .16s var(--ease);
}
.nav-list a:hover{color:var(--white);background:rgba(34,224,208,.08)}
.nav-list a:hover::before{opacity:1}
.nav-list a[aria-current="page"]{color:var(--white);background:rgba(34,224,208,.1)}
.nav-list a[aria-current="page"]::before{opacity:1}
.nav-list a[aria-current="page"]::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  background:var(--cyan);border-radius:2px;
}

.header-cta{margin-left:auto;flex:0 0 auto}
.read-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;pointer-events:none;background:transparent}
.read-progress span{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--flame));
  transition:width .1s linear;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;border:1px solid transparent;border-radius:999px;
  font-size:13.5px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background-color .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease),transform .16s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn-accent{border-color:var(--cyan);color:var(--cyan);background:rgba(34,224,208,.06)}
.btn-accent:hover{background:var(--flame);border-color:var(--flame);color:#0A0F1C}
.btn-solid{background:var(--cyan);border-color:var(--cyan);color:#04121A}
.btn-solid:hover{background:var(--white);border-color:var(--white)}
.btn-ghost{border-color:var(--line);color:var(--white)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(34,224,208,.07)}

/* ---------- 布局基础 ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--pad-x)}
.section{border-top:1px solid var(--line);padding-block:clamp(40px,5.5vw,84px)}
.section--flush{border-top:0}
.section--tight{padding-block:clamp(26px,3.4vw,48px)}
.grid{display:grid;gap:clamp(14px,1.6vw,22px)}
.grid-12{grid-template-columns:repeat(12,minmax(0,1fr))}

/* ---------- 编号章节头 ---------- */
.sec-head{
  display:grid;grid-template-columns:auto minmax(0,1fr);
  align-items:end;gap:clamp(14px,2.4vw,30px);
  margin-bottom:clamp(22px,3vw,40px);
}
.sec-no{
  font-family:var(--font-mono);font-weight:700;line-height:.92;
  font-size:clamp(30px,5vw,56px);letter-spacing:-.03em;
  color:transparent;-webkit-text-stroke:1px rgba(34,224,208,.75);
}
.sec-title{font-family:var(--font-narrow);font-weight:700;font-size:clamp(20px,3vw,32px);line-height:1.18}
.sec-sub{margin-top:9px;max-width:62ch;font-size:14px;color:var(--muted)}
.rule{width:56px;height:2px;background:var(--cyan);margin-bottom:18px}
.rule--flame{background:var(--flame)}

.prose{max-width:68ch}
.prose p{color:#D5DEEE}
.prose p+p{margin-top:14px}
.prose strong{color:var(--white)}

/* ---------- 卡片 ---------- */
.card{
  position:relative;display:block;
  padding:clamp(16px,2vw,24px);
  border:1px solid var(--line);border-radius:var(--r-md);
  background:linear-gradient(160deg,var(--bg-panel) 0%,#0A1224 80%);
  transition:transform .16s var(--ease),border-color .16s var(--ease),background-color .16s var(--ease);
}
.card:hover{transform:translateY(-6px);border-color:rgba(34,224,208,.45)}
.card-cut::after{
  content:"";position:absolute;top:0;right:0;width:38%;height:56%;
  background:linear-gradient(150deg,rgba(34,224,208,.14),rgba(255,90,45,.1));
  clip-path:polygon(100% 0,100% 100%,0 0);
  border-top-right-radius:var(--r-md);
  pointer-events:none;opacity:.85;
}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;border:1px solid var(--line);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;
  color:var(--muted);text-transform:uppercase;white-space:nowrap;
}
.tag--live{color:var(--flame);border-color:rgba(255,90,45,.5);background:rgba(255,90,45,.1)}
.tag--live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--flame)}
.tag--cyan{color:var(--cyan);border-color:rgba(34,224,208,.42);background:rgba(34,224,208,.08)}
.tag--season{color:var(--amber);border-color:rgba(255,194,75,.42);background:rgba(255,194,75,.08)}
.tag--ok{color:var(--mint);border-color:rgba(75,225,138,.42);background:rgba(75,225,138,.08)}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;padding-block:18px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--muted)}
.breadcrumb li{display:flex;align-items:center}
.breadcrumb li::after{content:"/";margin:0 9px;color:rgba(28,42,68,1)}
.breadcrumb li:last-child::after{content:"";margin:0}
.breadcrumb a{color:var(--muted);transition:color .16s var(--ease)}
.breadcrumb a:hover{color:var(--cyan)}

/* ---------- 图片容器基础规则 ---------- */
.media{
  position:relative;display:block;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-md);
  background:linear-gradient(140deg,#0F1B33,#080F1F 78%);
}
.media::before{content:"";display:block;padding-top:56.25%}
.media-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    repeating-linear-gradient(0deg,rgba(242,246,255,.035) 0 1px,transparent 1px 3px),
    linear-gradient(180deg,rgba(7,13,26,0) 42%,rgba(7,13,26,.65) 100%);
}
.media--wide::before{padding-top:42%}
.media--tall::before{padding-top:126%}
.media--square::before{padding-top:100%}
.media--cut::after,.media--cut{border-top-right-radius:0}
.media--cut{border-top-right-radius:0}
.media--cut .media-img{clip-path:none}
.media--cut{clip-path:polygon(0 0,calc(100% - 28px) 0,100% 28px,100% 100%,0 100%)}
.media-cap{
  position:absolute;left:14px;bottom:12px;z-index:2;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--white);
}

/* ---------- 入场显现 ---------- */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .2s var(--ease),transform .2s var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(15,27,51,.72) 0%,rgba(7,13,26,1) 62%);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;width:120px;height:2px;background:var(--cyan);
}
.footer-inner{max-width:var(--maxw);margin-inline:auto;padding:clamp(36px,5vw,64px) var(--pad-x) 26px}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(200px,1.15fr) minmax(240px,1.45fr) minmax(180px,1fr);
  gap:clamp(26px,4vw,56px);
}
.foot-block{min-width:0}
.foot-kicker{
  display:flex;align-items:center;gap:10px;
  margin-bottom:16px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--cyan);
}
.foot-kicker::before{content:"";width:14px;height:2px;background:var(--cyan);flex:0 0 auto}

.foot-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 20px}
.foot-links a{display:inline-block;padding:4px 0;font-size:14px;color:var(--muted);transition:color .16s var(--ease),transform .16s var(--ease)}
.foot-links a:hover{color:var(--white);transform:translateX(3px)}

.foot-list li{display:flex;gap:12px;padding:8px 0;border-bottom:1px dashed rgba(28,42,68,.95);font-size:14px}
.foot-list li:last-child{border-bottom:0}
.foot-key{flex:0 0 74px;padding-top:2px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--muted)}
.foot-val{color:var(--white);overflow-wrap:anywhere}
.foot-icp{font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;color:var(--muted)}
.foot-muted{margin-top:10px;font-size:12.5px;color:var(--muted)}

.footer-base{
  margin-top:clamp(26px,3.6vw,44px);padding-top:18px;
  border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);max-width:74ch;
}

/* ---------- 平板 ---------- */
@media (max-width:1080px){
  :root{--rail-w:76px}
  .rail-brand-text{font-size:13.5px;letter-spacing:.3em}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-block:last-child{grid-column:1 / -1}
}

/* ---------- 移动 ---------- */
@media (max-width:900px){
  :root{--rail-w:0px;--bar-h:56px}
  .brand-rail{display:none}
  .header-bar{left:0;gap:10px;padding:0 14px}
  .bar-brand{display:inline-flex}
  .nav-toggle{display:inline-flex;margin-left:auto;order:2}
  .header-cta{order:3;margin-left:0;padding:9px 14px}
  .site-nav{
    position:fixed;top:var(--bar-h);left:0;right:0;z-index:104;
    display:none;
    padding:8px 14px 20px;
    background:rgba(11,20,38,.98);
    border-bottom:1px solid var(--line);
    box-shadow:0 18px 40px rgba(0,0,0,.45);
    max-height:calc(100vh - var(--bar-h));
    overflow-y:auto;
  }
  .site-nav[data-open]{display:block;animation:nav-drop .2s var(--ease)}
  @keyframes nav-drop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;overflow:visible}
  .nav-list a{padding:13px 6px;font-size:15px;border-radius:0;border-bottom:1px solid rgba(28,42,68,.8)}
  .nav-list a[aria-current="page"]{background:transparent}
  .nav-list a[aria-current="page"]::after{left:6px;right:6px;bottom:4px}
  .skip-link{left:14px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px}
  .foot-block:last-child{grid-column:auto}
}

@media (max-width:600px){
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-links{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .foot-list li{flex-direction:column;gap:3px}
  .foot-key{flex:none;padding-top:0}
  .sec-head{grid-template-columns:minmax(0,1fr);align-items:start;gap:10px}
}

/* ---------- 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;
  }
  [data-reveal]{opacity:1;transform:none}
  .card:hover,.btn:hover,.foot-links a:hover{transform:none}
  .read-progress span{transition:none}
}