:root{
  --c-primary:#E63946;
  --c-secondary:#F77F00;
  --c-deep:#1D3557;
  --c-neon:#06D6A0;
  --c-bg:#F8F9FA;
  --c-dark:#212529;
  --c-muted:#6C757D;
  --c-white:#FFFFFF;
  --font-title:'Noto Sans SC','Microsoft YaHei',sans-serif;
  --font-body:'Noto Sans SC','PingFang SC',sans-serif;
  --font-num:'Roboto Mono','Courier New',monospace;
  --container-w:1320px;
  --container-pad:clamp(1rem,3vw,2.5rem);
  --header-h:64px;
  --radius:0;
  --shadow:0 10px 30px rgba(0,0,0,.12);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  color:var(--c-dark);
  background:
    linear-gradient(135deg,rgba(230,57,70,.04) 25%,transparent 25%) 0 0/32px 32px,
    linear-gradient(315deg,rgba(247,127,0,.03) 25%,transparent 25%) 0 0/42px 42px,
    var(--c-bg);
}
img,svg,canvas,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:none;cursor:pointer}
strong{font-weight:700}
:focus-visible{outline:3px solid var(--c-neon);outline-offset:2px;border-radius:2px}
::selection{background:var(--c-primary);color:var(--c-white)}
.container{width:100%;max-width:var(--container-w);margin-inline:auto;padding-inline:var(--container-pad)}
.num{font-family:var(--font-num);font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:.02em}
.tag{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  font-family:var(--font-num);
  font-size:.75rem;
  font-weight:600;
  line-height:1;
  padding:.35rem .6rem;
  border:1px solid transparent;
  background:var(--c-deep);
  color:var(--c-white);
  clip-path:polygon(8px 0,100% 0,calc(100% - 8px) 100%,0 100%);
}
.tag--green{background:var(--c-neon);color:var(--c-deep)}
.tag--orange{background:var(--c-secondary);color:var(--c-deep)}
.tag--red{background:var(--c-primary);color:var(--c-white)}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.8rem 1.4rem;
  font-weight:700;
  line-height:1;
  border:2px solid transparent;
  clip-path:polygon(12px 0,100% 0,calc(100% - 12px) 100%,0 100%);
  transition:transform .3s var(--ease),background .3s var(--ease),color .3s var(--ease),box-shadow .3s var(--ease);
}
.btn--primary{background:var(--c-primary);color:var(--c-white)}
.btn--primary:hover{background:var(--c-deep);color:var(--c-white);transform:translateY(-2px) skewX(-2deg)}
.btn--outline{border-color:var(--c-deep);color:var(--c-deep);background:transparent}
.btn--outline:hover{background:var(--c-deep);color:var(--c-white);transform:translateY(-2px)}
.btn--neon{background:var(--c-neon);color:var(--c-deep)}
.btn--neon:hover{background:var(--c-secondary);color:var(--c-deep);transform:translateY(-2px)}
.skip-link{
  position:absolute;
  top:-60px;
  left:1rem;
  z-index:2000;
  background:var(--c-deep);
  color:var(--c-white);
  padding:.7rem 1.2rem;
  font-weight:700;
  clip-path:polygon(10px 0,100% 0,calc(100% - 10px) 100%,0 100%);
  transition:top .3s var(--ease);
}
.skip-link:focus{top:1rem}
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:4px;
  background:transparent;
  z-index:1500;
  pointer-events:none;
  transform-origin:0 50%;
  transform:scaleX(0);
  background:linear-gradient(90deg,var(--c-primary) 0 70%,var(--c-secondary) 70% 85%,var(--c-neon) 85% 100%);
}
.topbar{
  background:var(--c-deep);
  color:var(--c-white);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:.4rem var(--container-pad);
  font-family:var(--font-num);
  font-size:.75rem;
  letter-spacing:.04em;
  border-bottom:2px solid var(--c-primary);
}
.topbar__status{
  display:flex;
  align-items:center;
  gap:.5rem;
}
.status-dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--c-neon);
  box-shadow:0 0 8px var(--c-neon);
  animation:pulse 1.6s infinite alternate;
}
.topbar__edition{
  display:flex;
  align-items:center;
  gap:.45rem;
  color:var(--c-white);
}
.site-header{
  position:relative;
  background:var(--c-white);
  border-bottom:3px solid var(--c-primary);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 14px),calc(100% - 40px) 100%,0 100%);
  z-index:100;
}
.site-header__main{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  min-height:var(--header-h);
  position:relative;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  position:relative;
  z-index:5;
  color:var(--c-deep);
}
.brand__mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:48px;
  height:48px;
  font-family:var(--font-num);
  font-weight:600;
  font-size:1.4rem;
  color:var(--c-white);
  background:var(--c-deep);
  clip-path:polygon(0 0,78% 0,100% 28%,100% 100%,0 100%);
  position:relative;
}
.brand__mark::after{
  content:"";
  position:absolute;
  right:-6px;
  bottom:8px;
  width:14px;
  height:10px;
  background:var(--c-primary);
  clip-path:polygon(0 0,100% 0,100% 100%,0 100%);
}
.brand__text{
  font-family:var(--font-title);
  font-weight:900;
  font-style:italic;
  font-size:1.45rem;
  letter-spacing:.02em;
  line-height:1;
}
.brand__text::after{
  content:"体育数据";
  display:block;
  font-family:var(--font-num);
  font-size:.55rem;
  font-weight:600;
  letter-spacing:.3em;
  color:var(--c-primary);
  margin-top:.15rem;
}
.nav{
  display:flex;
  align-items:center;
}
.nav__list{
  display:flex;
  align-items:center;
  gap:.2rem;
}
.nav__link{
  position:relative;
  display:block;
  padding:.6rem .9rem;
  font-weight:700;
  font-size:.95rem;
  color:var(--c-deep);
  white-space:nowrap;
  transition:color .25s var(--ease),transform .25s var(--ease);
}
.nav__link::after{
  content:"";
  position:absolute;
  left:.9rem;
  right:auto;
  bottom:.2rem;
  width:18px;
  height:3px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .3s var(--ease),background .3s var(--ease),width .3s var(--ease);
}
.nav__link:hover{color:var(--c-primary);transform:translateY(-1px)}
.nav__link:hover::after{transform:scaleX(1);width:28px}
.nav__link[aria-current="page"]{color:var(--c-primary)}
.nav__link[aria-current="page"]::after{
  transform:scaleX(1);
  width:100%;
  background:var(--c-secondary);
}
.site-header__actions{
  display:flex;
  align-items:center;
  gap:.6rem;
}
.mode-switch{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.55rem 1rem;
  font-size:.8rem;
  font-weight:700;
  color:var(--c-deep);
  border:2px solid var(--c-deep);
  background:transparent;
  clip-path:polygon(8px 0,100% 0,calc(100% - 8px) 100%,0 100%);
  transition:background .3s var(--ease),color .3s var(--ease),transform .3s var(--ease);
}
.mode-switch:hover{background:var(--c-deep);color:var(--c-white);transform:translateY(-1px)}
.mode-switch__icon{
  width:14px;
  height:10px;
  border:2px solid currentColor;
  border-top-width:4px;
  position:relative;
}
.mode-switch__icon::after{
  content:"";
  position:absolute;
  left:-3px;
  bottom:-3px;
  width:18px;
  height:3px;
  background:currentColor;
}
.nav-toggle{
  display:none;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  width:46px;
  height:44px;
  padding:.3rem;
  background:var(--c-deep);
  color:var(--c-white);
  clip-path:polygon(8px 0,100% 0,calc(100% - 8px) 100%,0 100%);
}
.nav-toggle__line{
  display:block;
  width:22px;
  height:2px;
  background:var(--c-white);
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.nav-toggle__label{
  font-family:var(--font-num);
  font-size:.55rem;
  letter-spacing:.1em;
  line-height:1;
}
.site-footer{
  background:
    linear-gradient(135deg,rgba(230,57,70,.25) 0,transparent 32%),
    linear-gradient(45deg,transparent 60%,rgba(6,214,160,.12) 100%),
    var(--c-deep);
  color:var(--c-white);
  border-top:6px solid var(--c-primary);
  clip-path:polygon(0 20px,100% 0,100% 100%,0 100%);
  margin-top:5rem;
  padding-top:4rem;
}
.site-footer__grid{
  display:grid;
  grid-template-columns:1.2fr 1fr 1.2fr;
  gap:3rem;
  padding-block:3rem;
}
.site-footer__logo{
  font-family:var(--font-title);
  font-weight:900;
  font-style:italic;
  font-size:1.8rem;
  color:var(--c-white);
  position:relative;
  display:inline-block;
  padding-bottom:.2rem;
}
.site-footer__logo::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-2px;
  width:40%;
  height:4px;
  background:var(--c-secondary);
}
.site-footer__desc{
  margin-top:1.2rem;
  color:rgba(255,255,255,.82);
  font-size:1rem;
  max-width:32ch;
}
.site-footer__trust{
  margin-top:1rem;
  padding:.7rem .9rem;
  border-left:4px solid var(--c-neon);
  background:rgba(255,255,255,.07);
  font-size:.875rem;
  color:var(--c-neon);
  font-family:var(--font-num);
  line-height:1.6;
}
.footer-heading{
  font-family:var(--font-title);
  font-weight:900;
  font-style:italic;
  font-size:1rem;
  letter-spacing:.08em;
  color:var(--c-white);
  padding-bottom:.6rem;
  border-bottom:2px solid rgba(255,255,255,.2);
  margin-bottom:1rem;
  display:flex;
  align-items:center;
  gap:.5rem;
}
.footer-heading::before{
  content:"//";
  color:var(--c-primary);
  font-family:var(--font-num);
}
.footer-nav-list{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:.4rem 1rem;
}
.footer-nav-list a{
  color:rgba(255,255,255,.82);
  font-size:.9rem;
  padding:.2rem 0;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-nav-list a:hover{
  color:var(--c-secondary);
  border-bottom-color:var(--c-secondary);
  padding-left:4px;
}
.site-footer__contact p{
  font-size:.9rem;
  margin-bottom:.45rem;
  color:rgba(255,255,255,.85);
  line-height:1.6;
}
.site-footer__contact .footer-contact__extra{
  margin-top:1rem;
  padding-top:.8rem;
  border-top:1px dashed rgba(255,255,255,.2);
  color:var(--c-neon);
  font-family:var(--font-num);
  font-size:.82rem;
}
.site-footer__bottom{
  border-top:1px solid rgba(255,255,255,.2);
  padding-block:1.2rem;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.8rem;
  font-family:var(--font-num);
  font-size:.82rem;
  color:rgba(255,255,255,.65);
}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  gap:1.2rem;
}
.footer-legal a{
  color:rgba(255,255,255,.78);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-legal a:hover{
  color:var(--c-neon);
  border-bottom-color:var(--c-neon);
}
.footer-copy{
  display:flex;
  align-items:center;
  gap:.4rem;
}
.footer-icp{
  letter-spacing:.05em;
}
.section-title{
  font-family:var(--font-title);
  font-weight:900;
  font-style:italic;
  font-size:clamp(2rem,6vw,4.5rem);
  line-height:1.02;
  color:var(--c-deep);
  display:flex;
  flex-direction:column;
}
.section-title .section-title__index{
  font-family:var(--font-num);
  font-size:.72em;
  font-style:normal;
  color:var(--c-primary);
  letter-spacing:.2em;
  align-self:flex-start;
}
.panel{
  position:relative;
  padding:clamp(1.5rem,4vw,3.5rem);
  clip-path:polygon(0 0,calc(100% - 28px) 0,100% 28px,100% 100%,28px 100%,0 calc(100% - 28px));
  background:var(--c-white);
  box-shadow:var(--shadow);
}
.panel--red{background:var(--c-primary);color:var(--c-white)}
.panel--orange{background:var(--c-secondary);color:var(--c-deep)}
.panel--deep{background:var(--c-deep);color:var(--c-white)}
.panel--light{background:var(--c-bg)}
.panel--skew::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(115deg,var(--c-primary) 0,var(--c-primary) 20%,transparent 20.2%,transparent 100%);
  opacity:.12;
  pointer-events:none;
}
.media-frame{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(135deg,rgba(230,57,70,.12) 25%,transparent 25%) 0 0/18px 18px,
    linear-gradient(315deg,rgba(29,53,87,.12) 25%,transparent 25%) 0 0/18px 18px,
    linear-gradient(160deg,var(--c-deep) 0%,var(--c-deep) 55%,var(--c-primary) 55.5%,var(--c-secondary) 100%);
  min-height:200px;
  clip-path:polygon(0 0,calc(100% - 24px) 0,100% 24px,100% 100%,0 100%);
}
.media-frame::after{
  content:"DJ·DATA";
  position:absolute;
  right:1.2rem;
  bottom:.8rem;
  font-family:var(--font-num);
  font-weight:600;
  font-size:.72rem;
  letter-spacing:.12em;
  color:rgba(255,255,255,.7);
}
.media-frame--hero{min-height:320px}
.media-frame--square{aspect-ratio:1/1;min-height:0}
.media-frame--tall{min-height:420px}
.reveal{
  opacity:0;
  transform:translateY(30px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.reveal.is-revealed{
  opacity:1;
  transform:none;
}
@keyframes pulse{
  from{opacity:.5;transform:scale(.9)}
  to{opacity:1;transform:scale(1.15)}
}
@media (min-width:768px) and (max-width:991px){
  .mode-switch{display:inline-flex}
  .nav-toggle{display:none}
  .nav{position:static}
}
@media (min-width:992px){
  .mode-switch{display:inline-flex}
  .nav-toggle{display:none}
  .nav{position:static}
}
@media (max-width:767px){
  .site-header{
    clip-path:none;
    border-bottom-width:2px;
  }
  .site-header__main{
    min-height:58px;
    gap:.6rem;
    padding-block:.5rem;
  }
  .brand__mark{width:40px;height:40px;font-size:1.1rem}
  .brand__text{font-size:1.3rem}
  .mode-switch{display:none}
  .nav-toggle{
    display:flex;
    margin-left:auto;
  }
  .nav{
    position:absolute;
    left:1rem;
    right:1rem;
    top:100%;
    z-index:1000;
    background:var(--c-deep);
    clip-path:polygon(18px 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%,0 18px);
    box-shadow:var(--shadow);
    display:none;
    padding:1rem .6rem .8rem;
  }
  .nav[data-open]{
    display:block;
    animation:navSlideIn .35s var(--ease);
  }
  .nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:.1rem;
  }
  .nav__link{
    color:var(--c-white);
    padding:.85rem 1rem;
    font-size:1rem;
    border-bottom:1px solid rgba(255,255,255,.08);
    display:flex;
    align-items:center;
    justify-content:space-between;
  }
  .nav__link::after{
    left:auto;
    right:1rem;
    bottom:.6rem;
    width:12px;
    height:12px;
    background:transparent;
    border-right:2px solid var(--c-secondary);
    border-bottom:2px solid var(--c-secondary);
    transform:rotate(45deg);
    transition:none;
  }
  .nav__link:hover{
    color:var(--c-secondary);
    background:rgba(255,255,255,.05);
  }
  .nav__link[aria-current="page"]{
    color:var(--c-neon);
    background:rgba(255,255,255,.05);
  }
  .nav__link[aria-current="page"]::after{
    width:12px;
    height:12px;
    background:transparent;
    border-right-color:var(--c-neon);
    border-bottom-color:var(--c-neon);
    transform:rotate(45deg);
  }
  .site-footer{
    clip-path:polygon(0 12px,100% 0,100% 100%,0 100%);
    margin-top:3rem;
    padding-top:2.5rem;
  }
  .site-footer__grid{
    grid-template-columns:1fr;
    gap:2rem;
    padding-block:2rem;
  }
  .site-footer__bottom{
    flex-direction:column;
    align-items:flex-start;
  }
  .footer-legal{
    gap:.8rem;
  }
  .topbar{
    font-size:.68rem;
    padding:.35rem .8rem;
  }
  .topbar__edition .tag{
    font-size:.62rem;
    padding:.25rem .45rem;
  }
  .media-frame--hero{min-height:220px}
  .media-frame--square{min-height:160px}
}
@media (min-width:1200px){
  .site-footer__grid{
    gap:5rem;
  }
}
body[data-display="widescreen"] .site-header__main{
  max-width:1600px;
}
body[data-display="widescreen"] .nav__link{
  font-size:1.05rem;
  padding:.8rem 1.2rem;
}
body[data-display="widescreen"] .container{
  max-width:1600px;
}
body[data-display="widescreen"] .site-footer__grid{
  gap:5rem;
}
body[data-display="widescreen"] .section-title{
  font-size:clamp(2.5rem,7vw,6rem);
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
    transition-duration:.01ms!important;
    scroll-behavior:auto!important;
  }
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
  .scroll-progress{display:none}
}
@keyframes navSlideIn{
  from{opacity:0;transform:translateY(-10px)}
  to{opacity:1;transform:none}
}
@media (max-width:991px){
  .nav{
    display:none;
  }
  .nav[data-open]{
    display:block;
  }
}