/* =========================================================
   爱体育赛场 · 共享样式 /assets/site.css
   ========================================================= */

/* ---------- 1. tokens ---------- */
:root{
  --green-home:#0B2E22;
  --green-turf:#123A2B;
  --night:#05130F;
  --cyan:#35F2C0;
  --orange:#FF8A3D;
  --amber:#FFD166;
  --ink:#E8FFF7;
  --muted:#A9C7BC;
  --dataline:#1FA37A;
  --card:rgba(255,255,255,.06);
  --card2:rgba(255,255,255,.03);
  --hair:rgba(53,242,192,.18);
  --hair-strong:rgba(53,242,192,.38);
  --r-xl:28px;
  --r-lg:24px;
  --r-md:18px;
  --pill:999px;
  --maxw:1180px;
  --pad:24px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  --mono:ui-monospace,"SFMono-Regular","Cascadia Mono","Roboto Mono",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{list-style:none;padding:0}
img,svg,picture,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
[hidden]{display:none !important}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:8px}

/* ---------- 3. base ---------- */
body{
  min-height:100vh;
  color:var(--ink);
  font-family:var(--font);
  font-size:17px;
  line-height:1.8;
  letter-spacing:.005em;
  background:
    radial-gradient(1150px 620px at 80% -10%, rgba(53,242,192,.10), transparent 62%),
    radial-gradient(900px 540px at -8% 10%, rgba(31,163,122,.18), transparent 60%),
    linear-gradient(180deg,var(--green-home) 0%,var(--green-home) 55%,var(--night) 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.02) 0 1px,transparent 1px 92px);
}
main{position:relative;z-index:1}
h1,h2,h3,h4{font-weight:900;letter-spacing:-.02em;line-height:1.22}
h1{font-size:clamp(2.1rem,5.6vw,4.2rem)}
h2{font-size:clamp(1.6rem,3.4vw,2.5rem)}
h3{font-size:1.2rem}
p{line-height:1.85}
a{transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease)}
html.nav-open{overflow:hidden}

/* ---------- 4. skip link ---------- */
.skiplink{
  position:absolute;
  left:16px;
  top:-72px;
  z-index:99;
  padding:11px 22px;
  border-radius:var(--pill);
  background:var(--cyan);
  color:var(--night);
  font-size:14px;
  font-weight:800;
  transition:top .22s var(--ease);
}
.skiplink:focus{top:14px}

/* ---------- 5. header ---------- */
.topbar{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg,rgba(5,19,15,.95) 0%,rgba(11,46,34,.84) 100%);
  border-bottom:1px solid var(--hair);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  transition:box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.topbar[data-stuck="true"]{
  border-bottom-color:var(--hair-strong);
  box-shadow:0 16px 44px rgba(5,19,15,.62);
}
.topbar__inner{
  position:relative;
  max-width:var(--maxw);
  margin:0 auto;
  padding:13px var(--pad);
  min-height:74px;
  display:flex;
  align-items:center;
  gap:18px;
}
.topbar__fieldline{
  flex:1 1 auto;
  min-width:24px;
  height:1px;
  position:relative;
  background:linear-gradient(90deg,rgba(53,242,192,0),rgba(53,242,192,.45),rgba(53,242,192,0));
}
.topbar__fieldline::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:9px;
  height:9px;
  margin:-4.5px 0 0 -4.5px;
  border-radius:50%;
  border:1px solid rgba(53,242,192,.6);
}
.scrollrail{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  z-index:5;
  background:linear-gradient(90deg,var(--dataline),var(--cyan) 62%,var(--orange));
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .12s linear;
  pointer-events:none;
}

/* brand mark */
.brandmark{
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
}
.brandmark__dot{
  width:14px;
  height:14px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 4px rgba(53,242,192,.16),0 0 18px rgba(53,242,192,.55);
}
.brandmark__text{display:flex;flex-direction:column;line-height:1.1}
.brandmark__name{font-size:19px;font-weight:900;letter-spacing:-.02em;color:var(--ink)}
.brandmark__note{margin-top:3px;font-size:10.5px;font-weight:600;letter-spacing:.15em;color:var(--muted)}
.brandmark--foot .brandmark__name{font-size:20px}
.brandmark:hover .brandmark__name{color:var(--cyan)}

/* mobile toggle */
.navtoggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  flex:0 0 auto;
  padding:9px 15px;
  border-radius:var(--pill);
  border:1px solid var(--hair-strong);
  background:rgba(53,242,192,.07);
  color:var(--cyan);
  font-size:13px;
  font-weight:800;
  letter-spacing:.08em;
  cursor:pointer;
}
.navtoggle:hover{background:rgba(53,242,192,.15)}
.navtoggle__bars{position:relative;display:block;width:16px;height:10px}
.navtoggle__bars::before,
.navtoggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .3s var(--ease),top .3s var(--ease);
}
.navtoggle__bars::before{top:0}
.navtoggle__bars::after{top:8px}
.navtoggle[aria-expanded="true"] .navtoggle__bars::before{top:4px;transform:rotate(45deg)}
.navtoggle[aria-expanded="true"] .navtoggle__bars::after{top:4px;transform:rotate(-45deg)}

/* nav — mobile first */
.sitenav{
  position:fixed;
  left:12px;
  right:12px;
  bottom:12px;
  z-index:70;
  max-height:76vh;
  overflow:auto;
  padding:14px;
  border:1px solid var(--hair-strong);
  border-radius:var(--r-xl);
  background:rgba(6,24,18,.98);
  box-shadow:0 28px 70px rgba(0,0,0,.62);
  transform:translateY(calc(100% + 34px));
  visibility:hidden;
  transition:transform .38s var(--ease),visibility .38s var(--ease);
}
.sitenav[data-open]{transform:translateY(0);visibility:visible}
.sitenav__list{display:flex;flex-direction:column;gap:2px}
.sitenav__link{
  display:block;
  padding:12px 16px;
  border-radius:14px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
}
.sitenav__link:hover{background:rgba(53,242,192,.1);color:var(--cyan)}
.sitenav__link[aria-current="page"]{
  background:rgba(53,242,192,.16);
  color:var(--cyan);
  font-weight:800;
}
.sitenav__cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.topbar__actions{display:none}

/* ---------- 6. buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:12px 22px;
  border-radius:var(--pill);
  border:1px solid transparent;
  font-size:14.5px;
  font-weight:800;
  letter-spacing:.02em;
  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:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--cyan);color:var(--night)}
.btn--primary:hover{box-shadow:0 12px 28px rgba(53,242,192,.3)}
.btn--ghost{border-color:var(--hair-strong);background:rgba(53,242,192,.06);color:var(--cyan)}
.btn--ghost:hover{background:rgba(53,242,192,.15)}
.btn--warm{background:var(--orange);color:var(--night)}
.btn--warm:hover{box-shadow:0 12px 28px rgba(255,138,61,.28)}
.btn--quiet{border-color:rgba(169,199,188,.28);color:var(--muted)}
.btn--quiet:hover{color:var(--ink);border-color:var(--hair-strong)}

/* ---------- 7. footer ---------- */
.sitefoot{
  position:relative;
  z-index:2;
  margin-top:76px;
  padding:58px 0 30px;
  border-top:1px solid var(--hair);
  background:linear-gradient(180deg,rgba(5,19,15,.45),var(--night) 62%);
}
.sitefoot__inner{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.sitefoot__top{display:grid;grid-template-columns:1fr;gap:36px}
.sitefoot__brand{min-width:0}
.sitefoot__tag{margin-top:16px;max-width:30em;font-size:14px;line-height:1.9;color:var(--muted)}
.sitefoot__cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(148px,1fr));gap:28px}
.sitefoot__coltitle{
  margin-bottom:13px;
  font-size:11.5px;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--cyan);
}
.sitefoot__col ul{display:flex;flex-direction:column;gap:9px}
.sitefoot__link{font-size:14px;color:var(--muted)}
.sitefoot__link:hover{color:var(--cyan)}
.sitefoot__meta{
  margin-top:42px;
  padding-top:22px;
  border-top:1px solid rgba(53,242,192,.12);
  display:flex;
  flex-direction:column;
  gap:8px;
}
.sitefoot__line{font-size:13.5px;line-height:1.85;color:var(--muted)}
.sitefoot__line .num{color:var(--ink)}
.sitefoot__legal{
  margin-top:24px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 26px;
}
.sitefoot__legaltext{max-width:46em;font-size:12.5px;color:rgba(169,199,188,.82)}
.sitefoot__links{display:flex;flex-wrap:wrap;gap:8px 18px}
.sitefoot__links a{font-size:12.5px;color:var(--muted)}
.sitefoot__links a:hover{color:var(--cyan)}
.sitefoot__icp{font-family:var(--mono);font-size:12.5px;color:var(--muted)}
.sitefoot__year{font-size:12.5px;color:rgba(169,199,188,.75)}

/* ---------- 8. layout ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.section{padding:64px 0}
.section--tight{padding:34px 0}
.section--breathe{padding:96px 0}
.breathe{
  max-width:var(--maxw);
  height:1px;
  margin:0 auto;
  background:linear-gradient(90deg,rgba(53,242,192,0),rgba(53,242,192,.22),rgba(53,242,192,0));
}

.grid{display:grid;gap:18px;grid-template-columns:1fr}
.bento{display:grid;gap:16px;grid-template-columns:repeat(12,1fr)}
.bento > *{grid-column:span 12}

/* ---------- 9. text blocks ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:6px 14px;
  border-radius:var(--pill);
  border:1px solid var(--hair-strong);
  background:rgba(53,242,192,.07);
  font-size:11.5px;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--cyan);
}
.eyebrow__dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.section-title{margin-top:16px;font-size:clamp(1.6rem,3.4vw,2.5rem)}
.lead{margin-top:14px;max-width:38em;font-size:17px;line-height:1.85;color:var(--muted)}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.hl{
  padding:0 2px;
  border-radius:2px;
  font-weight:700;
  background:linear-gradient(180deg,transparent 58%,rgba(53,242,192,.34) 58%);
}
.hl--warm{background:linear-gradient(180deg,transparent 58%,rgba(255,138,61,.34) 58%)}

/* ---------- 10. cards & stats ---------- */
.card{
  position:relative;
  padding:24px;
  border:1px solid var(--hair);
  border-radius:var(--r-lg);
  background:var(--card);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  transition:border-color .25s var(--ease),background-color .25s var(--ease),transform .25s var(--ease);
}
.card:hover{border-color:var(--hair-strong);background:rgba(255,255,255,.085);transform:translateY(-2px)}
.card--turf{background:linear-gradient(150deg,rgba(18,58,43,.92),rgba(5,19,15,.78))}
.card--flat{background:var(--card2)}
.card__label{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:4px 11px;
  border-radius:var(--pill);
  border:1px solid rgba(53,242,192,.22);
  background:rgba(53,242,192,.06);
  font-size:11px;
  font-weight:800;
  letter-spacing:.14em;
  color:var(--muted);
}
.card__title{margin-top:14px;font-size:20px;font-weight:900;letter-spacing:-.01em;line-height:1.32}
.card__text{margin-top:10px;font-size:15px;line-height:1.8;color:var(--muted)}
.stat__value{font-family:var(--mono);font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;line-height:1;color:var(--cyan);font-variant-numeric:tabular-nums}
.stat__value--warm{color:var(--orange)}
.stat__unit{margin-left:6px;font-size:.42em;font-weight:600;color:var(--muted)}
.stat__label{margin-top:9px;font-size:12.5px;letter-spacing:.1em;color:var(--muted)}

/* ---------- 11. tags / badges ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:5px 12px;
  border-radius:var(--pill);
  border:1px solid transparent;
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
}
.tag__dot{width:6px;height:6px;border-radius:50%;background:currentColor}
.tag--live{color:var(--cyan);border-color:rgba(53,242,192,.4);background:rgba(53,242,192,.1)}
.tag--live .tag__dot{animation:pulse 2.4s ease-in-out infinite}
.tag--warm{color:var(--orange);border-color:rgba(255,138,61,.38);background:rgba(255,138,61,.1)}
.tag--warn{color:var(--amber);border-color:rgba(255,209,102,.38);background:rgba(255,209,102,.1)}
.tag--mute{color:var(--muted);border-color:rgba(169,199,188,.26);background:rgba(255,255,255,.04)}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.42;transform:scale(.78)}}

/* ---------- 12. segmented / tabs / filter ---------- */
.segmented{
  display:inline-flex;
  flex-wrap:wrap;
  gap:4px;
  padding:5px;
  border-radius:var(--pill);
  border:1px solid var(--hair);
  background:rgba(255,255,255,.05);
}
.segmented__btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 16px;
  border-radius:var(--pill);
  font-size:13.5px;
  font-weight:700;
  color:var(--muted);
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.segmented__btn:hover{color:var(--ink);background:rgba(53,242,192,.1)}
.segmented__btn[aria-selected="true"],
.segmented__btn[aria-pressed="true"]{background:var(--cyan);color:var(--night)}
.segmented__dot{width:6px;height:6px;border-radius:50%;background:var(--dataline)}
.segmented__btn[aria-selected="true"] .segmented__dot,
.segmented__btn[aria-pressed="true"] .segmented__dot{background:var(--night)}
.tabpanel{padding-top:22px}

/* ---------- 13. accordion ---------- */
.acc{border:1px solid var(--hair);border-radius:var(--r-md);background:var(--card2);overflow:hidden}
.acc__item + .acc__item{border-top:1px solid rgba(53,242,192,.12)}
.acc__btn{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 20px;
  text-align:left;
  font-size:15.5px;
  font-weight:700;
  color:var(--ink);
  cursor:pointer;
}
.acc__btn:hover{color:var(--cyan)}
.acc__sign{position:relative;flex:0 0 auto;width:18px;height:18px;color:var(--cyan)}
.acc__sign::before,
.acc__sign::after{content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform .28s var(--ease)}
.acc__sign::before{left:0;right:0;top:8px;height:2px}
.acc__sign::after{top:0;bottom:0;left:8px;width:2px}
.acc__btn[aria-expanded="true"] .acc__sign::after{transform:scaleY(0)}
.acc__panel{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- 14. breadcrumbs ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--muted)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--cyan)}
.crumbs__sep{color:var(--dataline)}
.crumbs [aria-current="page"]{color:var(--ink);font-weight:700}

/* ---------- 15. prose ---------- */
.prose{max-width:40em}
.prose p{margin-top:16px;font-size:16.5px;line-height:1.85;color:rgba(232,255,247,.9)}
.prose h2{margin-top:38px}
.prose h3{margin-top:26px}
.prose ul{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.prose li{position:relative;padding-left:20px;font-size:16px;line-height:1.8;color:rgba(232,255,247,.9)}
.prose li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--dataline)}
.prose strong{font-weight:800;color:var(--ink)}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(53,242,192,.42)}
.prose a:hover{border-bottom-color:var(--cyan)}

/* ---------- 16. image boxes ---------- */
.imgbox{
  position:relative;
  overflow:hidden;
  border:1px solid var(--hair);
  border-radius:var(--r-lg);
  background:linear-gradient(155deg,var(--green-turf),var(--night));
}
.imgbox > img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/9}
.imgbox::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(5,19,15,0) 42%,rgba(5,19,15,.78) 100%);
}
.imgbox__label{
  position:absolute;
  left:14px;
  bottom:14px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 13px;
  border-radius:var(--pill);
  border:1px solid var(--hair-strong);
  background:rgba(5,19,15,.74);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--ink);
}
.imgbox__placeholder{
  display:grid;
  place-items:center;
  aspect-ratio:16/9;
  font-size:13px;
  letter-spacing:.1em;
  color:rgba(169,199,188,.55);
  background:repeating-linear-gradient(135deg,rgba(53,242,192,.05) 0 12px,transparent 12px 24px);
}
.imgbox--wide > img,
.imgbox--wide > .imgbox__placeholder{aspect-ratio:21/9}
.imgbox--square > img,
.imgbox--square > .imgbox__placeholder{aspect-ratio:1/1}
.imgbox--portrait > img,
.imgbox--portrait > .imgbox__placeholder{aspect-ratio:3/4}
.imgbox--figure > img,
.imgbox--figure > .imgbox__placeholder{aspect-ratio:4/3}

/* ---------- 17. data bars ---------- */
.bar{height:8px;border-radius:var(--pill);background:rgba(255,255,255,.09);overflow:hidden}
.bar__fill{height:100%;border-radius:var(--pill);background:linear-gradient(90deg,var(--dataline),var(--cyan))}
.bar__fill--warm{background:linear-gradient(90deg,#C25E24,var(--orange))}

/* ---------- 18. reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 19. responsive ---------- */
@media (max-width:1079px){
  .topbar__fieldline{display:none}
  .topbar__inner{justify-content:space-between}
  .topbar__actions{display:none}
}
@media (max-width:600px){
  :root{--pad:18px}
  body{font-size:16px}
  .brandmark__note{font-size:9.5px;letter-spacing:.12em}
  .topbar__inner{min-height:66px;gap:12px}
  .navtoggle__text{display:none}
  .section{padding:44px 0}
  .section--breathe{padding:62px 0}
  .card{padding:20px}
  .sitefoot{margin-top:52px;padding-top:44px}
  .sitefoot__legal{justify-content:flex-start}
}
@media (min-width:700px){
  .grid--2{grid-template-columns:repeat(2,1fr)}
  .grid--3{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:760px){
  .sitefoot__top{grid-template-columns:1.25fr 2fr;gap:50px}
}
@media (min-width:900px){
  .bento__xl{grid-column:span 8}
  .bento__lg{grid-column:span 6}
  .bento__md{grid-column:span 4}
  .bento__sm{grid-column:span 3}
}
@media (min-width:1000px){
  .grid--3{grid-template-columns:repeat(3,1fr)}
  .grid--4{grid-template-columns:repeat(4,1fr)}
}
@media (min-width:1080px){
  .navtoggle{display:none}
  .sitenav{
    position:static;
    flex:0 0 auto;
    max-height:none;
    overflow:visible;
    padding:0;
    border:0;
    border-radius:0;
    background:none;
    box-shadow:none;
    transform:none;
    visibility:visible;
    transition:none;
  }
  .sitenav__list{
    flex-direction:row;
    align-items:center;
    gap:4px;
    padding:6px;
    border:1px solid var(--hair);
    border-radius:var(--pill);
    background:rgba(255,255,255,.05);
  }
  .sitenav__link{
    padding:8px 15px;
    border-radius:var(--pill);
    font-size:14px;
    font-weight:600;
    color:var(--muted);
    white-space:nowrap;
  }
  .sitenav__link:hover{background:rgba(53,242,192,.12);color:var(--ink)}
  .sitenav__link[aria-current="page"]{
    background:var(--cyan);
    color:var(--night);
    font-weight:800;
  }
  .sitenav__cta{display:none}
  .topbar__actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
}

/* ---------- 20. motion preference ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none}
  .btn:hover,.card:hover{transform:none}
}