/* ==========================================================================
   球王会体育 · 共享站点样式 /assets/site.css
   夜场球场灯光 + 数据面板：堆叠面板、切角、斜线与运动轨迹
   ========================================================================== */

:root{
  --ink:#04211C;
  --ink-2:#07332A;
  --pitch:#0B4A3C;
  --neon:#19F5C6;
  --amber:#FF7A2F;
  --lime:#C9FF5E;
  --bone:#EAF6F2;
  --grey:#8FA8A1;
  --black:#101418;
  --paper:#F4F1EA;

  --font-display:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-body:var(--font-display);
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --shell:1280px;
  --gutter:clamp(20px,4.6vw,56px);
  --cut:22px;
  --header-h:68px;

  --hairline:rgba(25,245,198,.18);
  --hairline-soft:rgba(11,74,60,.9);
}

@media (min-width:1024px){ :root{ --header-h:76px; } }

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink);
  color:var(--bone);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg,video{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
button{font:inherit;color:inherit;background:none;border:0;padding:0}
a{color:inherit}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--neon);outline-offset:3px}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.08;letter-spacing:-.02em}
h1{font-size:clamp(34px,6.4vw,76px)}
h2{font-size:clamp(26px,4.2vw,46px)}
h3{font-size:clamp(20px,2.6vw,28px)}

::selection{background:var(--neon);color:var(--ink)}

/* ---------- 跳链 ---------- */
.skip-link{
  position:fixed;
  top:-120px;
  left:clamp(12px,3vw,24px);
  z-index:200;
  padding:12px 18px;
  background:var(--neon);
  color:var(--ink);
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  transition:top .18s ease;
}
.skip-link:focus{top:12px}

/* ---------- 容器与章节 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{
  position:relative;
  padding-block:clamp(64px,8.5vw,118px);
}
.top-space{padding-top:calc(var(--header-h) + clamp(24px,5vw,64px))}

.prose{max-width:44em}
.prose p{margin:0 0 1.15em;color:rgba(234,246,242,.82)}
.prose h2,.prose h3{margin:1.6em 0 .6em}
.prose ul{margin:0 0 1.2em;padding-left:1.2em;list-style:disc}
.prose li{margin:.35em 0;color:rgba(234,246,242,.82)}
.prose strong{color:var(--bone)}
.prose a{color:var(--neon);text-decoration:underline;text-underline-offset:4px}

/* ---------- 面板 ---------- */
.panel{
  position:relative;
  background:var(--ink-2);
  padding:clamp(24px,3.6vw,48px);
}
.panel--edge{border:1px solid var(--pitch)}
.panel--cut{
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
}
.panel--light{background:var(--paper);color:#122622}
.panel--light h2,.panel--light h3,.panel--light h4{color:#0B2420}
.panel--light p,.panel--light li{color:#3A4C46}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:600px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 图片容器 ---------- */
.media{
  position:relative;
  overflow:hidden;
  width:100%;
  aspect-ratio:16/9;
  background:linear-gradient(140deg,#07332A 0%,#04211C 70%);
  border:1px solid var(--pitch);
}
.media img{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--cut{
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
  border:0;
}
.media--placeholder::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(25,245,198,.10) 0 1px,transparent 1px 18px);
  pointer-events:none;
}
.media__caption{margin-top:10px;font-size:13px;line-height:1.7;color:var(--grey)}

/* ---------- 标签 / 数字 / 注释 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--lime);
  border:1px solid rgba(201,255,94,.4);
}
.tag--neon{color:var(--neon);border-color:rgba(25,245,198,.45)}

.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

.stat{display:flex;flex-direction:column;gap:6px}
.stat__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(24px,3.4vw,36px);
  line-height:1;
  color:var(--neon);
}
.stat__label{font-size:13px;letter-spacing:.08em;color:var(--grey)}

.side-note{
  font-size:14px;
  line-height:1.6;
  letter-spacing:.34em;
  color:var(--grey);
  writing-mode:vertical-rl;
}

/* ---------- 分隔与轨迹 ---------- */
.rule-slash{
  display:block;
  width:100%;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--pitch) 14%,var(--pitch) 86%,transparent);
  transform:skewY(-1.4deg);
}
.track-line{
  position:absolute;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--neon),transparent);
  opacity:.35;
  pointer-events:none;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--grey);
}
.breadcrumb li{display:flex;align-items:center;gap:10px}
.breadcrumb li+li::before{content:"/";color:var(--pitch)}
.breadcrumb a{color:var(--grey);text-decoration:none;transition:color .16s ease}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb [aria-current="page"]{color:var(--bone)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 22px;
  font-family:var(--font-display);
  font-size:14px;
  font-weight:700;
  letter-spacing:.08em;
  text-decoration:none;
  cursor:pointer;
  border:1px solid transparent;
  clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn:focus-visible{outline:none;box-shadow:inset 0 0 0 3px rgba(25,245,198,.9)}
.btn-amber{background:var(--amber);color:#1B0B02}
.btn-amber:hover{background:#FF9057}
.btn-neon{background:var(--neon);color:var(--ink)}
.btn-ghost{background:rgba(4,33,28,.42);border-color:rgba(234,246,242,.3);color:var(--bone)}
.btn-ghost:hover{border-color:var(--neon);color:var(--neon)}
.btn--block{width:100%}

/* ---------- 页头 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.site-header.is-scrolled,
.site-header[data-open]{
  background:rgba(4,33,28,.96);
  border-bottom-color:var(--hairline);
  box-shadow:0 18px 38px -28px rgba(0,0,0,.95);
  backdrop-filter:blur(10px);
}
.header-shell{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(14px,2.6vw,40px);
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  height:var(--header-h);
  padding-inline:var(--gutter);
}

.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;flex:0 0 auto}
.brand-mark{
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  flex:0 0 38px;
  background:var(--neon);
  color:var(--ink);
  font-family:var(--font-display);
  font-size:20px;
  font-weight:900;
  line-height:1;
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.brand-lockup{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-family:var(--font-display);font-size:18px;font-weight:900;letter-spacing:.02em;color:var(--bone)}
.brand-domain{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--grey)}

.site-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:clamp(10px,1.8vw,26px)}
.nav-list a{
  position:relative;
  display:block;
  padding:10px 0;
  font-size:15px;
  letter-spacing:.04em;
  color:rgba(234,246,242,.82);
  text-decoration:none;
  transition:color .16s ease;
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:4px;
  width:0;
  height:2px;
  background:var(--neon);
  transition:width .18s ease;
}
.nav-list a:hover{color:var(--bone)}
.nav-list a:hover::after{width:100%}
.nav-list a[aria-current="page"]{color:var(--neon)}
.nav-list a[aria-current="page"]::after{width:16px}

.nav-foot{
  margin-top:20px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--grey);
}

.header-tail{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.header-cta{padding:11px 18px;font-size:13px}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 14px;
  border:1px solid rgba(25,245,198,.35);
  color:var(--neon);
  font-size:13px;
  letter-spacing:.1em;
  cursor:pointer;
  transition:border-color .16s ease,background-color .16s ease;
}
.nav-toggle:hover{border-color:var(--neon);background:rgba(25,245,198,.08)}
.nav-toggle-bars{display:inline-flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle-bars i{display:block;height:2px;background:currentColor;transition:transform .2s ease,opacity .2s ease}
.site-header[data-open] .nav-toggle-bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars i:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle-bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.header-progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  display:block;
  height:2px;
  background:rgba(25,245,198,.12);
  pointer-events:none;
}
.header-progress i{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--neon),var(--lime));
}

@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-foot{display:block}
  .site-nav{
    position:fixed;
    left:0;right:0;
    top:var(--header-h);
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    padding:14px var(--gutter) 34px;
    background:linear-gradient(180deg,#07332A 0%,#04211C 100%);
    border-top:1px solid var(--hairline);
    transform:translateY(-14px);
    opacity:0;
    visibility:hidden;
    transition:opacity .2s ease,transform .2s ease,visibility .2s linear;
  }
  .site-header[data-open] .site-nav{transform:none;opacity:1;visibility:visible}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li{border-bottom:1px solid var(--hairline-soft)}
  .nav-list a{padding:16px 4px;font-size:17px}
  .nav-list a::after{content:none}
  .nav-list a[aria-current="page"]{padding-left:16px}
  .nav-list a[aria-current="page"]::before{
    content:"";
    position:absolute;
    left:0;
    top:50%;
    width:10px;
    height:2px;
    background:var(--neon);
    transform:translateY(-50%);
  }
}

@media (min-width:1024px){
  .nav-foot{display:none}
}
@media (max-width:719px){
  .header-cta{display:none}
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(40px,7vw,100px);
  padding-top:clamp(46px,6vw,84px);
  background:var(--black);
  color:var(--bone);
  border-top:1px solid var(--hairline);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:200px;
  background-image:repeating-linear-gradient(115deg,rgba(25,245,198,.06) 0 1px,transparent 1px 22px);
  pointer-events:none;
}
.footer-shell{
  position:relative;
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:0 var(--gutter) 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.15fr 1fr 1.1fr;
  gap:clamp(26px,4vw,58px);
}
.footer-col--brand{min-width:0}
.footer-brand{
  font-family:var(--font-display);
  font-size:clamp(26px,4.4vw,38px);
  font-weight:900;
  line-height:1.1;
  letter-spacing:-.01em;
  color:var(--bone);
}
.footer-tagline{margin-top:12px;font-size:14px;letter-spacing:.24em;color:var(--neon)}
.footer-meta{margin-top:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--grey)}
.footer-title{
  margin-bottom:14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--hairline-soft);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--grey);
}
.footer-links{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:6px 20px;
  margin-bottom:28px;
}
.footer-links a{
  display:inline-block;
  padding:3px 0;
  font-size:15px;
  color:rgba(234,246,242,.78);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.footer-links a:hover{color:var(--neon);border-bottom-color:var(--neon)}
.footer-contact li{
  display:grid;
  grid-template-columns:56px minmax(0,1fr);
  gap:12px;
  padding:10px 0;
  border-bottom:1px dashed var(--hairline-soft);
  font-size:15px;
}
.contact-k{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--grey);padding-top:3px}
.contact-v{color:var(--bone);word-break:break-word}
.footer-note{margin-top:16px;font-size:13px;line-height:1.7;color:var(--grey)}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 28px;
  margin-top:clamp(28px,4vw,52px);
  padding-top:20px;
  border-top:1px solid var(--hairline-soft);
}
.footer-copy{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--grey)}

@media (max-width:900px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-col--brand{grid-column:1 / -1}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:clamp(14px,3vw,28px);
  bottom:clamp(14px,3vw,28px);
  z-index:70;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:11px 16px;
  background:var(--ink-2);
  border:1px solid rgba(25,245,198,.4);
  color:var(--neon);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  clip-path:polygon(10px 0,100% 0,100% 100%,0 100%,0 10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s linear,background-color .16s ease,color .16s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--neon);color:var(--ink)}

/* ---------- 显现与章节刻度 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .45s ease,transform .45s ease;
}
[data-reveal].is-inview{opacity:1;transform:none}

[data-section]{position:relative}
[data-section]::before{
  content:"";
  position:absolute;
  left:0;
  top:clamp(64px,8.5vw,118px);
  width:3px;
  height:0;
  background:var(--neon);
  transition:height .3s ease;
}
[data-section].is-current::before{height:56px}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
}