/* ==========================================================================
   南宫体育主站 — 共享样式 /assets/site.css
   深墨绿基底 · 炭黑纵深 · 荧光橙红扫描线 · 冷银灰细边界
   ========================================================================== */

:root{
  --bg:#0B1A16;
  --panel:#122520;
  --carbon:#05080A;
  --flare:#FF4A1C;
  --flare-soft:#FF8A5C;
  --silver:#C7D0D4;
  --muted:#7C8B90;
  --paper:#EAF1F1;
  --amber:#F5C542;
  --red:#E0362A;

  --line:rgba(199,208,212,.14);
  --line-strong:rgba(199,208,212,.28);
  --flare-dim:rgba(255,74,28,.10);

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

  --header-h:86px;
  --header-h-solid:66px;
  --wrap:1240px;
  --pad:24px;
  --ease:cubic-bezier(.22,.68,.28,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 8px);
}
body{
  margin:0;
  background:var(--bg);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(58% 46% at 88% -8%, rgba(255,74,28,.13), transparent 62%),
    radial-gradient(48% 40% at -6% 14%, rgba(199,208,212,.07), transparent 68%),
    linear-gradient(180deg,#0B1A16 0%,#081310 100%);
}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;margin:0}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}

:focus-visible{
  outline:2px solid var(--flare);
  outline-offset:3px;
  border-radius:0;
}

/* ---------- layout ---------- */
.wrap{
  width:min(var(--wrap),100% - var(--pad) * 2);
  margin-inline:auto;
}
#main-content{padding-top:var(--header-h)}
.section{padding:76px 0}
.section--tight{padding:48px 0}
.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:8px 20px;
  padding-bottom:16px;
  margin-bottom:28px;
  border-bottom:1px solid var(--line);
}

/* ---------- type helpers ---------- */
.eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--flare);
}
.lede{
  font-size:18px;
  line-height:1.8;
  color:var(--silver);
  max-width:68ch;
}
.prose{max-width:68ch}
.prose p{margin-bottom:1.05em}
.prose p:last-child{margin-bottom:0}
.prose h2,.prose h3{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.01em;
  color:var(--paper);
  margin:1.6em 0 .6em;
}
.prose h2{font-size:24px}
.prose h3{font-size:19px}
.prose ul{list-style:disc;padding-left:1.25em;margin-bottom:1.05em}
.prose ol{list-style:decimal;padding-left:1.4em;margin-bottom:1.05em}
.prose li{margin-bottom:.35em}
.prose a{
  color:var(--flare-soft);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
}
.prose a:hover{color:var(--flare)}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;
  top:0;
  left:50%;
  z-index:200;
  transform:translate(-50%,-160%);
  padding:12px 24px;
  background:var(--flare);
  color:#0B1A16;
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  transition:transform 180ms var(--ease);
}
.skip-link:focus{transform:translate(-50%,0);color:#0B1A16}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color 220ms var(--ease),border-color 220ms var(--ease);
}
.site-header.is-solid{
  background:#05080A;
  border-bottom-color:var(--line);
}
.site-header__inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:var(--header-h);
  transition:height 220ms var(--ease);
}
.site-header.is-solid .site-header__inner{height:var(--header-h-solid)}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  display:block;
  background:var(--flare);
  transform:scaleX(0);
  transform-origin:left center;
  opacity:0;
  transition:opacity 200ms linear;
}
.site-header.is-solid .scroll-progress{opacity:1}

/* brand */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:none;
  color:var(--paper);
}
.brand__mark{
  position:relative;
  width:30px;
  height:30px;
  flex:none;
  border:1px solid var(--flare);
  transform:skewX(-8deg);
}
.brand__mark::before{
  content:"";
  position:absolute;
  top:50%;
  left:50%;
  width:12px;
  height:12px;
  background:var(--flare);
  transform:translate(-50%,-50%);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__wordmark{
  font-family:var(--font-display);
  font-size:21px;
  font-weight:900;
  letter-spacing:.02em;
}
.brand__tagline{
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
  margin-top:3px;
}

/* nav */
.site-nav{display:flex;align-items:center;margin-left:auto}
.site-nav__label{display:none}
.site-nav__list{display:flex;align-items:center;gap:2px}
.site-nav__item{list-style:none}
.site-nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 12px;
  font-size:15px;
  font-weight:500;
  color:var(--silver);
  border-bottom:2px solid transparent;
  transition:color 180ms var(--ease),background-color 180ms var(--ease),border-color 180ms var(--ease);
}
.site-nav__link:hover{
  color:var(--paper);
  background:var(--flare-dim);
}
.site-nav__link[aria-current="page"]{
  color:var(--paper);
  border-bottom-color:var(--flare);
}

/* header actions */
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:none;
}

/* buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  font-family:var(--font-body);
  font-size:15px;
  font-weight:600;
  letter-spacing:.03em;
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--paper);
  cursor:pointer;
  transition:background-color 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease);
}
.btn--flare{
  background:var(--flare);
  border-color:var(--flare);
  color:#0B1A16;
}
.btn--flare:hover{
  background:var(--flare-soft);
  border-color:var(--flare-soft);
  transform:translateY(-2px);
}
.btn--ghost:hover{
  background:rgba(199,208,212,.10);
  border-color:var(--silver);
  transform:translateY(-2px);
}

/* nav toggle */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:0 14px;
  background:transparent;
  border:1px solid var(--line-strong);
  color:var(--paper);
  font-size:13px;
  letter-spacing:.08em;
  cursor:pointer;
  transition:border-color 180ms var(--ease),background-color 180ms var(--ease);
}
.nav-toggle:hover{border-color:var(--flare);background:var(--flare-dim)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bars span{
  display:block;
  height:2px;
  background:var(--flare);
  transition:transform 200ms var(--ease),opacity 200ms var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:96px;
  background:var(--carbon);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  width:min(420px,42%);
  height:2px;
  background:linear-gradient(90deg,var(--flare),rgba(255,74,28,0));
}
.site-footer .wrap{padding-block:60px 32px}
.site-footer__top{
  display:grid;
  grid-template-columns:minmax(220px,.9fr) minmax(0,2fr);
  gap:48px;
}
.footer-brand{display:flex;flex-direction:column;gap:10px}
.footer-brand__mark{
  width:26px;
  height:26px;
  border:1px solid var(--flare);
  background:linear-gradient(135deg,var(--flare) 0 50%,rgba(255,74,28,.18) 50% 100%);
}
.footer-brand__wordmark{
  font-family:var(--font-display);
  font-size:22px;
  font-weight:900;
  letter-spacing:.02em;
  color:var(--paper);
}
.footer-brand__note{
  font-size:13px;
  color:var(--muted);
  letter-spacing:.04em;
}
.footer-nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:32px;
}
.footer-nav__title{
  font-size:12px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--flare);
  padding-bottom:12px;
  margin-bottom:12px;
  border-bottom:1px solid var(--line);
}
.footer-nav__list{display:flex;flex-direction:column}
.footer-nav__link{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:15px;
  color:var(--silver);
  transition:color 160ms var(--ease),padding-left 160ms var(--ease);
}
.footer-nav__link:hover{color:var(--flare-soft);padding-left:6px}
.site-footer__meta{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:grid;
  gap:6px;
  font-size:13px;
  color:var(--muted);
}
.footer-meta__line{margin:0;line-height:1.7}
.footer-meta__strong{color:var(--silver);font-family:var(--font-data);font-size:13px}
.footer-meta__legal{color:rgba(124,139,144,.9)}

/* ---------- shared components ---------- */
.panel{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  padding:28px;
  box-shadow:inset 0 1px 0 rgba(199,208,212,.05),0 18px 40px -34px rgba(0,0,0,.95);
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.panel:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:inset 0 1px 0 rgba(199,208,212,.07),0 26px 52px -34px rgba(0,0,0,1);
}
.panel__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:10px 16px;
  padding-bottom:14px;
  margin-bottom:20px;
  border-bottom:1px solid var(--line);
}
.panel__title{
  font-family:var(--font-display);
  font-size:20px;
  font-weight:900;
  letter-spacing:-.01em;
  color:var(--paper);
}
.panel__tag{
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
  font-family:var(--font-data);
}

.slab{position:relative;background:var(--panel);border-block:1px solid var(--line)}
.cut-top{clip-path:polygon(0 22px,100% 0,100% 100%,0 100%)}
.cut-bottom{clip-path:polygon(0 0,100% 0,100% 100%,0 calc(100% - 22px))}

.grid{display:grid;gap:20px}
.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))}
.grid--7-3{grid-template-columns:minmax(0,7fr) minmax(0,3fr)}
.grid--5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}

.stat{
  display:grid;
  gap:6px;
  padding:18px 20px;
  background:var(--panel);
  border:1px solid var(--line);
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.stat:hover{
  transform:translateY(-2px);
  border-color:rgba(255,74,28,.5);
  box-shadow:0 22px 40px -30px rgba(0,0,0,1);
}
.stat__label{
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--muted);
}
.stat__value{
  font-family:var(--font-data);
  font-size:40px;
  line-height:1;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--paper);
}
.stat__unit{font-size:13px;color:var(--muted)}
.stat--flare .stat__value{color:var(--flare)}
.stat--amber .stat__value{color:var(--amber)}
.stat--red .stat__value{color:var(--red)}

.data-bar{
  display:block;
  height:6px;
  width:100%;
  background:rgba(199,208,212,.13);
  overflow:hidden;
}
.data-bar__fill{
  display:block;
  height:100%;
  width:var(--fill,50%);
  background:linear-gradient(90deg,var(--flare),var(--flare-soft));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 620ms var(--ease);
}
.is-in .data-bar__fill{transform:scaleX(1)}

.tablist{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  border:1px solid var(--line);
  background:rgba(5,8,10,.5);
}
.tab{
  appearance:none;
  background:transparent;
  border:0;
  border-bottom:2px solid transparent;
  color:var(--silver);
  font-size:14px;
  font-weight:500;
  letter-spacing:.02em;
  min-height:44px;
  padding:0 18px;
  cursor:pointer;
  transition:color 180ms var(--ease),background-color 180ms var(--ease),border-color 180ms var(--ease);
}
.tab:hover{color:var(--paper);background:rgba(199,208,212,.06)}
.tab[aria-selected="true"]{
  color:var(--paper);
  border-bottom-color:var(--flare);
  background:var(--flare-dim);
}
.tabpanel[hidden]{display:none}
.tabpanel{padding-top:22px}

.chip{
  display:inline-flex;
  align-items:center;
  min-height:26px;
  padding:0 10px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--silver);
  border:1px solid var(--line-strong);
}
.chip--amber{color:var(--amber);border-color:rgba(245,197,66,.5)}
.chip--red{color:var(--red);border-color:rgba(224,54,42,.5)}

.breadcrumb{padding:20px 0 0}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb__list li{list-style:none;display:inline-flex;align-items:center}
.breadcrumb__list li + li::before{
  content:"/";
  margin-right:10px;
  color:rgba(199,208,212,.35);
}
.breadcrumb__list a{color:var(--silver);transition:color 160ms var(--ease)}
.breadcrumb__list a:hover{color:var(--flare-soft)}
.breadcrumb__list [aria-current="page"]{color:var(--paper)}

.figure{position:relative;margin:0}
.figure__frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 9;
  background:
    linear-gradient(135deg,#122520 0%,#05080A 100%);
  border:1px solid var(--line);
}
.figure__frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    linear-gradient(180deg,rgba(11,26,22,0) 42%,rgba(5,8,10,.74) 100%),
    repeating-linear-gradient(90deg,rgba(199,208,212,.05) 0 1px,transparent 1px 68px);
}
.figure__frame > img,
.figure__frame > video{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.86) contrast(1.06);
}
.figure__caption{
  margin-top:10px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.02em;
}
.figure--wide .figure__frame{aspect-ratio:21 / 9}
.figure--tall .figure__frame{aspect-ratio:4 / 5}
.figure--square .figure__frame{aspect-ratio:1 / 1}

/* reveal */
[data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity 420ms var(--ease),transform 420ms var(--ease);
}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- tablet ---------- */
@media (max-width:1120px) and (min-width:901px){
  .brand__tagline{display:none}
  .site-nav__link{padding:0 9px;font-size:14px}
  .header-actions__cta{padding:0 14px;font-size:14px}
}

/* ---------- mobile nav ---------- */
@media (max-width:900px){
  :root{--header-h:72px;--header-h-solid:60px}

  .nav-toggle{display:inline-flex}

  .site-nav{
    position:fixed;
    top:0;
    right:0;
    bottom:0;
    left:auto;
    width:min(360px,86vw);
    display:block;
    margin-left:0;
    padding:calc(var(--header-h) + 20px) 0 40px;
    background:var(--carbon);
    border-left:1px solid var(--line-strong);
    box-shadow:-28px 0 64px -34px rgba(0,0,0,1);
    overflow-y:auto;
    z-index:70;
    transform:translateX(101%);
    transition:transform 220ms var(--ease);
  }
  .site-nav[data-open]{transform:translateX(0)}

  .site-nav__label{
    display:block;
    padding:0 24px 14px;
    font-size:12px;
    font-weight:700;
    letter-spacing:.16em;
    text-transform:uppercase;
    color:var(--flare);
    border-bottom:1px solid var(--line);
  }
  .site-nav__list{display:block;counter-reset:leg}
  .site-nav__item{
    counter-increment:leg;
    border-bottom:1px solid var(--line);
  }
  .site-nav__link{
    display:flex;
    width:100%;
    min-height:60px;
    padding:0 24px 0 60px;
    font-size:16px;
    color:var(--silver);
    border-bottom:0;
  }
  .site-nav__link::before{
    content:"";
    position:absolute;
    left:24px;
    top:50%;
    width:20px;
    height:2px;
    background:var(--flare);
    transform:scaleX(.34);
    transform-origin:left center;
    transition:transform 180ms var(--ease);
  }
  .site-nav__link::after{
    content:counter(leg,decimal-leading-zero);
    position:absolute;
    right:24px;
    top:50%;
    transform:translateY(-50%);
    font-family:var(--font-data);
    font-size:12px;
    letter-spacing:.08em;
    color:var(--muted);
  }
  .site-nav__link:hover::before,
  .site-nav__link:focus-visible::before{transform:scaleX(1)}
  .site-nav__link[aria-current="page"]{
    color:var(--paper);
    background:var(--flare-dim);
    border-bottom-color:transparent;
  }
  .site-nav__link[aria-current="page"]::before{transform:scaleX(1)}
  .site-nav__link[aria-current="page"]::after{color:var(--flare)}

  .site-footer__top{grid-template-columns:minmax(0,1fr);gap:40px}
  .site-footer .wrap{padding-block:48px 28px}
}

@media (max-width:900px){
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--7-3,.grid--5-7,.grid--2{grid-template-columns:minmax(0,1fr)}
}

/* ---------- phone ---------- */
@media (max-width:640px){
  :root{--pad:16px;--header-h:66px;--header-h-solid:58px}
  body{font-size:16px;line-height:1.72}

  .brand__mark{width:26px;height:26px}
  .brand__wordmark{font-size:18px}
  .brand__tagline{display:none}
  .header-actions__cta{display:none}
  .nav-toggle__text{display:none}
  .nav-toggle{padding:0 12px}

  .section{padding:52px 0}
  .section--tight{padding:34px 0}
  .panel{padding:20px}
  .panel__title{font-size:18px}
  .stat__value{font-size:32px}
  .lede{font-size:16px}

  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .site-footer__meta{font-size:12px}
  .footer-meta__strong{font-size:12px;word-break:break-all}
  .breadcrumb{padding-top:14px}
}

/* ---------- reduced motion ---------- */
@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 !important;transform:none !important}
  .data-bar__fill{transform:scaleX(1) !important}
  .site-nav{transition:none}
}