/* =========================================================
   免费体育看台 · /assets/site.css
   共享外壳：reset / 变量 / 排版 / 头部 / 页脚 / 通用组件
   ========================================================= */

/* ---------- 1. 变量 ---------- */
:root{
  --c-ink:#0A120C;
  --c-ink-2:#14251A;
  --c-green:#1F7A45;
  --c-glow:#35C46F;
  --c-lemon:#D8F542;
  --c-chalk:#F2F6EA;
  --c-line:#A9BBA4;
  --c-navy:#101B33;
  --c-orange:#E8623C;
  --c-white:#FFFFFF;

  --font-display:"Archivo Narrow","Arial Narrow","Helvetica Neue",-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --gutter:clamp(1.15rem,4vw,3.25rem);
  --wrap:min(1280px,calc(100% - var(--gutter) * 2));

  --radius-s:4px;
  --radius-m:14px;
  --radius-organic:2px 26px 2px 26px;

  --hairline:1px solid rgba(169,187,164,.34);
  --hairline-soft:1px solid rgba(169,187,164,.18);
  --hairline-dark:1px solid rgba(169,187,164,.26);

  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-break:1001px;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-chalk);
  color:var(--c-ink);
  font-family:var(--font-body);
  font-size:calc(16px + .12vw);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg,video,picture{display:block;max-width:100%;height:auto}
a{color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0}
h1,h2,h3,h4{
  margin:0;
  font-family:var(--font-display);
  font-weight:900;
  font-stretch:condensed;
  line-height:1;
  letter-spacing:-.01em;
}
p{margin:0}
hr{border:0}
::selection{background:var(--c-lemon);color:var(--c-ink)}
:focus-visible{outline:2px solid var(--c-glow);outline-offset:3px;border-radius:2px}

/* ---------- 3. 中文排版与通用文本 ---------- */
.prose{max-width:38rem;line-height:1.75}
.prose p+p{margin-top:1.15em}
.prose h2{margin-top:2.2em;font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.05}
.prose h3{margin-top:1.7em;font-size:clamp(1.15rem,1.6vw,1.35rem)}
.prose ul,.prose ol{margin:1.1em 0;padding-left:1.15em;list-style:disc}
.prose ol{list-style:decimal}
.prose li+li{margin-top:.4em}
.prose strong{font-weight:800}
.prose a{color:var(--c-green);text-decoration:none;border-bottom:1px solid rgba(31,122,69,.4)}
.prose a:hover{border-color:var(--c-lemon);color:var(--c-ink)}

.micro{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--c-line);
}
.num{
  font-family:var(--font-mono);
  font-weight:700;
  letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
}

/* ---------- 4. 骨架容器 ---------- */
.wrap{width:var(--wrap);margin-inline:auto}
.section{padding-block:clamp(3.5rem,9vw,8rem)}
.section--tight{padding-block:clamp(2.25rem,5vw,4.25rem)}
.section--dark{background:var(--c-ink);color:var(--c-chalk)}
.section--navy{background:var(--c-navy);color:var(--c-chalk)}
.section--green{background:var(--c-green);color:var(--c-chalk)}
.section--dark .micro,.section--navy .micro,.section--green .micro{color:rgba(169,187,164,.9)}

.rule{height:1px;background:rgba(169,187,164,.34)}
.rule--soft{background:rgba(169,187,164,.18)}

.band{
  background:var(--c-navy);
  color:var(--c-chalk);
  padding-block:clamp(1.5rem,4vw,2.6rem);
  border-block:var(--hairline-soft);
}
.band--green{background:var(--c-green);border-color:rgba(242,246,234,.18)}
.band--lemon{background:var(--c-lemon);color:var(--c-ink);border-color:rgba(10,18,12,.14)}
.band-inner{
  width:var(--wrap);
  margin-inline:auto;
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:.6rem clamp(1rem,4vw,3rem);
}
.band--lemon .micro{color:rgba(10,18,12,.6)}

.grid{display:grid;gap:clamp(1.25rem,3vw,2.5rem)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--5-7{grid-template-columns:5fr 7fr}
.grid--7-5{grid-template-columns:7fr 5fr}

@media (max-width:900px){
  .grid--2,.grid--3,.grid--5-7,.grid--7-5{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 5. 按钮 / 标签 / 数据 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  padding:.72rem 1.35rem;
  border-radius:999px;
  border:1px solid transparent;
  font-size:.9rem;
  font-weight:800;
  letter-spacing:.02em;
  text-decoration:none;
  cursor:pointer;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn--primary{background:var(--c-lemon);color:var(--c-ink)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(216,245,66,.24)}
.btn--ghost{border-color:rgba(169,187,164,.5);color:inherit}
.btn--ghost:hover{border-color:currentColor;background:rgba(169,187,164,.14)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.28rem .7rem;
  border:1px solid currentColor;
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  opacity:.72;
  transition:opacity .2s var(--ease),background-color .2s var(--ease);
}
.tag:hover{opacity:1}
.tag--accent{color:var(--c-ink);background:var(--c-lemon);border-color:var(--c-lemon);opacity:1}
.tag--green{color:var(--c-glow);border-color:rgba(53,196,111,.6);opacity:1}

.stat{display:flex;flex-direction:column;gap:.35rem}
.stat-num{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(1.9rem,5vw,3.2rem);
  line-height:1;
  letter-spacing:.04em;
  color:var(--c-lemon);
}
.stat-label{
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--c-line);
}

/* ---------- 6. 面包屑 ---------- */
.breadcrumb{
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--c-line);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:.4rem}
.breadcrumb li{display:flex;gap:.4rem}
.breadcrumb li+li::before{content:"/";opacity:.55}
.breadcrumb a{text-decoration:none;border-bottom:1px solid transparent}
.breadcrumb a:hover{border-color:var(--c-lemon);color:var(--c-lemon)}

/* ---------- 7. 图片容器基础规则 ---------- */
.media{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/10;
  border-radius:var(--radius-m);
  background:linear-gradient(140deg,var(--c-ink-2),var(--c-navy));
  isolation:isolate;
}
.media > img,
.media > picture > img,
.media__img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .6s var(--ease);
}
.media--wide{aspect-ratio:21/9}
.media--portrait{aspect-ratio:4/5}
.media--square{aspect-ratio:1/1}
.media--cut{border-radius:var(--radius-organic)}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(10,18,12,0) 42%,rgba(10,18,12,.74));
  opacity:0;
  transition:opacity .3s var(--ease);
}
.media--veil::after{opacity:1}
.media:hover > img,.media:hover > picture > img{transform:scale(1.03)}
.media-caption{
  position:absolute;
  left:1.1rem;
  right:1.1rem;
  bottom:1rem;
  z-index:2;
  color:var(--c-chalk);
  font-size:.85rem;
  line-height:1.55;
}

/* 错位叠放工具 */
.lap-up{margin-top:-2.5rem}
.lap-left{margin-left:-2.5rem}
@media (max-width:900px){
  .lap-up{margin-top:-1.25rem}
  .lap-left{margin-left:0}
}

/* ---------- 8. 可展开内容组 ---------- */
.expand{border-top:var(--hairline)}
.expand-item{
  border-bottom:var(--hairline);
  transition:border-color .22s var(--ease);
}
.expand-item:hover{border-color:var(--c-glow)}
.expand-head{margin:0;font:inherit;font-weight:800}
.expand-trigger{
  display:flex;
  align-items:center;
  gap:1rem;
  width:100%;
  padding:1.2rem 0;
  text-align:left;
  cursor:pointer;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(1.05rem,2vw,1.28rem);
  letter-spacing:.01em;
  color:inherit;
  transition:color .2s var(--ease);
}
.expand-trigger:hover{color:var(--c-glow)}
.expand-icon{
  position:relative;
  flex:none;
  margin-left:auto;
  width:14px;
  height:14px;
}
.expand-icon::before,
.expand-icon::after{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:14px;
  height:2px;
  background:currentColor;
  transform:translateY(-50%);
  transition:transform .22s var(--ease),background-color .22s var(--ease);
}
.expand-icon::after{transform:translateY(-50%) rotate(90deg)}
.expand-item.is-open .expand-icon::after{transform:translateY(-50%) rotate(0deg)}
.expand-item.is-open .expand-trigger{color:var(--c-glow)}
.expand-panel{
  display:grid;
  grid-template-rows:1fr;
  transition:grid-template-rows .22s var(--ease);
}
html.js .expand-panel{grid-template-rows:0fr}
html.js .expand-item.is-open .expand-panel{grid-template-rows:1fr}
.expand-panel-inner{overflow:hidden}
.expand-panel-inner > *{padding-bottom:1.25rem}
.expand-panel-inner > *:last-child{padding-bottom:1.4rem}

/* ---------- 9. 进场显现 ---------- */
[data-reveal]{
  transition:opacity .7s var(--ease),transform .7s var(--ease);
  transition-delay:var(--reveal-delay,0s);
}
html.js [data-reveal]{opacity:0;transform:translateY(24px)}
html.js [data-reveal].is-in{opacity:1;transform:translateY(0)}

/* ---------- 10. 跳到主要内容 ---------- */
.skip-link{
  position:fixed;
  top:-5rem;
  left:var(--gutter);
  z-index:200;
  padding:.65rem 1.1rem;
  border-radius:0 0 var(--radius-m) var(--radius-m);
  background:var(--c-lemon);
  color:var(--c-ink);
  font-size:.85rem;
  font-weight:800;
  text-decoration:none;
  transition:top .2s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{top:0}

/* ---------- 11. 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--c-ink);
  color:var(--c-chalk);
  border-bottom:var(--hairline-dark);
}
.site-header::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:0;
  height:2px;
  background:linear-gradient(90deg,var(--c-glow),var(--c-lemon) 38%,rgba(216,245,66,0) 82%);
}
.site-header[data-open]{box-shadow:0 24px 48px rgba(10,18,12,.6)}

.header-rail{
  display:flex;
  align-items:center;
  gap:.6rem;
  padding:.3rem var(--gutter);
  background:linear-gradient(90deg,var(--c-navy),var(--c-ink-2) 58%,var(--c-ink));
  border-bottom:var(--hairline-soft);
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--c-line);
  white-space:nowrap;
  overflow:hidden;
}
.rail-hint{margin:0;overflow:hidden;text-overflow:ellipsis}
.rail-dot{
  flex:none;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--c-lemon);
  box-shadow:0 0 0 3px rgba(216,245,66,.16);
}
.rail-slogan{margin:0 0 0 auto;padding-left:1rem;color:rgba(242,246,234,.72)}

.header-bar{
  display:flex;
  align-items:center;
  gap:clamp(.75rem,2vw,2rem);
  padding:clamp(.7rem,1.6vw,1rem) var(--gutter);
  background:radial-gradient(80% 200% at 6% 50%,rgba(31,122,69,.5),transparent 62%),var(--c-ink);
}

.brand{
  display:flex;
  align-items:center;
  gap:.7rem;
  text-decoration:none;
  color:inherit;
}
.brand-mark{
  flex:none;
  width:13px;
  height:34px;
  border-radius:2px 8px 2px 8px;
  background:linear-gradient(180deg,var(--c-lemon) 0 38%,var(--c-glow) 38% 100%);
  transform:skewX(-8deg);
}
.brand-text{display:block}
.brand-name{
  display:block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.15rem,2.4vw,1.4rem);
  line-height:1;
  letter-spacing:.02em;
}
.brand-sub{
  display:block;
  margin-top:.3rem;
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--c-line);
}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  margin-left:auto;
  padding:.5rem .85rem;
  border:1px solid rgba(169,187,164,.42);
  border-radius:999px;
  color:var(--c-chalk);
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--c-lemon);color:var(--c-lemon)}
.nav-toggle-bars{
  position:relative;
  display:block;
  width:16px;
  height:2px;
  background:currentColor;
  transition:background-color .2s var(--ease);
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:2px;
  background:currentColor;
  transition:transform .22s var(--ease);
}
.nav-toggle-bars::before{top:-5px}
.nav-toggle-bars::after{top:5px}
.site-header[data-open] .nav-toggle-bars{background:transparent}
.site-header[data-open] .nav-toggle-bars::before{transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{transform:translateY(-5px) rotate(-45deg)}

/* 移动优先：导航默认是抽屉 */
.site-nav{
  position:absolute;
  top:100%;
  left:0;
  right:0;
  display:flex;
  flex-direction:column;
  align-items:stretch;
  gap:0;
  margin:0;
  padding:1rem var(--gutter) 1.4rem;
  max-height:80vh;
  overflow-y:auto;
  background:var(--c-ink-2);
  border-bottom:var(--hairline-dark);
  box-shadow:0 26px 44px rgba(10,18,12,.55);
  opacity:0;
  visibility:hidden;
  transform:translateY(-10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.site-header[data-open] .site-nav{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.nav-item{border-bottom:var(--hairline-soft)}
.nav-item:first-child{border-top:var(--hairline-soft)}
.nav-link{
  position:relative;
  display:block;
  padding:.9rem 0;
  font-family:var(--font-display);
  font-weight:800;
  font-size:1.1rem;
  letter-spacing:.01em;
  color:rgba(242,246,234,.82);
  text-decoration:none;
  transition:color .2s var(--ease),padding-left .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-link:hover{color:var(--c-white)}
.nav-link[aria-current="page"]{
  color:var(--c-lemon);
  padding-left:.85rem;
  box-shadow:inset 3px 0 0 var(--c-lemon);
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.4rem;
  margin-top:1.1rem;
  padding:.8rem 1.2rem;
  border-radius:999px;
  background:var(--c-lemon);
  color:var(--c-ink);
  font-size:.88rem;
  font-weight:800;
  letter-spacing:.02em;
  text-decoration:none;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(216,245,66,.26)}

.header-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:rgba(169,187,164,.16);
  overflow:hidden;
}
.header-progress-bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--c-glow),var(--c-lemon));
}

@media (max-width:720px){
  .rail-slogan{display:none}
  .brand-sub{display:none}
  .brand-mark{height:28px}
}

@media (min-width:1001px){
  .nav-toggle{display:none}
  .site-nav{
    position:static;
    flex-direction:row;
    align-items:center;
    gap:clamp(1rem,2.2vw,2.2rem);
    margin-left:auto;
    padding:0;
    max-height:none;
    overflow:visible;
    background:none;
    border:0;
    box-shadow:none;
    opacity:1;
    visibility:visible;
    transform:none;
  }
  .nav-list{display:flex;align-items:center;gap:clamp(.9rem,1.9vw,1.9rem)}
  .nav-item{border:0}
  .nav-item:first-child{border:0}
  .nav-link{
    display:inline-block;
    padding:.4rem 0;
    font-family:var(--font-body);
    font-weight:600;
    font-size:.94rem;
    letter-spacing:.02em;
    color:rgba(242,246,234,.78);
  }
  .nav-link[aria-current="page"]{padding-left:0;box-shadow:none;color:var(--c-lemon)}
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;
    right:0;
    bottom:.08rem;
    height:2px;
    background:var(--c-lemon);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .24s var(--ease);
  }
  .nav-link:hover::after,
  .nav-link[aria-current="page"]::after{transform:scaleX(1)}
  .nav-cta{margin-top:0}
}

/* ---------- 12. 页脚 ---------- */
.site-footer{
  position:relative;
  padding:clamp(2.8rem,7vw,5.5rem) 0 1.75rem;
  background:
    radial-gradient(120% 120% at 10% 0%,rgba(31,122,69,.55),transparent 58%),
    linear-gradient(180deg,var(--c-ink-2),var(--c-ink) 72%);
  color:var(--c-chalk);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:3px;
  background:linear-gradient(90deg,var(--c-lemon),var(--c-glow) 42%,rgba(216,245,66,0) 88%);
}
.site-footer::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:6px;
  opacity:.45;
  background:repeating-linear-gradient(90deg,var(--c-green) 0 18px,transparent 18px 26px);
}
.footer-inner{width:var(--wrap);margin-inline:auto}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:clamp(1.75rem,4vw,3.5rem);
}
.footer-name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.7rem,3.4vw,2.4rem);
  line-height:1;
  letter-spacing:-.01em;
}
.footer-domain{
  margin-top:.55rem;
  font-family:var(--font-mono);
  font-size:.76rem;
  letter-spacing:.1em;
  color:var(--c-glow);
}
.footer-slogan{
  margin-top:.9rem;
  max-width:22rem;
  font-size:.9rem;
  line-height:1.75;
  color:rgba(242,246,234,.66);
}
.footer-label{
  margin-bottom:.9rem;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--c-line);
}
.footer-list{display:flex;flex-direction:column}
.footer-link{
  display:block;
  padding:.52rem 0;
  border-bottom:var(--hairline-soft);
  color:rgba(242,246,234,.8);
  font-size:.92rem;
  text-decoration:none;
  transition:color .2s var(--ease),border-color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-link:hover,.footer-link:focus-visible{
  color:var(--c-lemon);
  border-color:var(--c-lemon);
  padding-left:.35rem;
}
.footer-list li:last-child .footer-link{border-bottom:0}
.footer-contact-line{
  display:flex;
  flex-wrap:wrap;
  gap:.5rem;
  padding:.55rem 0;
  border-bottom:var(--hairline-soft);
  font-size:.92rem;
}
.contact-key{
  min-width:3.2rem;
  padding-top:.25rem;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--c-line);
}
.contact-val{color:var(--c-white);word-break:break-all}
.footer-note{
  margin-top:1rem;
  padding-left:.8rem;
  border-left:2px solid var(--c-lemon);
  font-size:.8rem;
  line-height:1.7;
  color:rgba(242,246,234,.62);
}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:.75rem 2rem;
  margin-top:clamp(2.5rem,5vw,4rem);
  padding-top:1.4rem;
  border-top:var(--hairline-soft);
}
.footer-legal{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.08em;
  color:var(--c-line);
}
.footer-fine{font-size:.82rem;color:rgba(242,246,234,.66)}

@media (min-width:720px){
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
}
@media (min-width:1080px){
  .footer-grid{grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr) minmax(0,1.5fr)}
}

/* ---------- 13. 减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html.js [data-reveal]{opacity:1;transform:none;transition:none}
  .media:hover > img,
  .media:hover > picture > img{transform:none}
  .nav-cta:hover,.btn--primary:hover{transform:none}
}