/* ===========================================================
   KAIYUN 体育主站 · 共享站点套件 /assets/site.css
   展览画册 × 数据分析室
   =========================================================== */

/* ---------- 1. 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,li,figure,figcaption,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}

/* ---------- 2. 变量 ---------- */
:root{
  --ky-ink:#0B1F1A;
  --ky-char:#111614;
  --ky-paper:#F2E9D8;
  --ky-cream:#F5F1E8;
  --ky-cyan:#3EF2C7;
  --ky-gold:#D8B26A;
  --ky-ember:#E0644B;
  --ky-moss:#6F8F7A;
  --ky-mist:#7C93A8;
  --ky-clay:#B77A5E;
  --ky-lilac:#8A7F9B;
  --ky-line:#9AA59F;
  --ky-line-soft:rgba(154,165,159,.26);
  --ky-line-faint:rgba(154,165,159,.14);
  --ky-t-78:rgba(245,241,232,.78);
  --ky-t-56:rgba(245,241,232,.56);
  --ky-t-34:rgba(245,241,232,.34);

  --ky-font-display:"Archivo Narrow","Barlow Condensed","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --ky-font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ky-font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --ky-shell:1320px;
  --ky-gutter:28px;
  --ky-cut:12px;
  --ky-cut-lg:18px;
  --ky-accent-paper:#0E6B58;
}
@media (max-width:640px){:root{--ky-gutter:18px}}

/* ---------- 3. 基底与中文排版 ---------- */
body{
  min-height:100vh;
  font-family:var(--ky-font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--ky-cream);
  background:
    radial-gradient(circle at 84% -12%,rgba(62,242,199,.07),transparent 46%),
    radial-gradient(circle at 2% 6%,rgba(216,178,106,.06),transparent 40%),
    var(--ky-ink);
}
h1,h2,h3,h4{font-family:var(--ky-font-display);font-weight:800;line-height:1.22;letter-spacing:.02em}
::selection{background:var(--ky-cyan);color:var(--ky-ink)}
:focus-visible{outline:2px solid var(--ky-cyan);outline-offset:3px;border-radius:2px}
#main-content:focus{outline:none}

/* ---------- 4. 布局骨架 ---------- */
.ky-shell{width:100%;max-width:var(--ky-shell);margin:0 auto;padding:0 var(--ky-gutter)}
.ky-section{padding:clamp(44px,6.5vw,92px) 0}
.ky-section__head{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:12px 18px;
  padding-bottom:14px;margin-bottom:clamp(24px,3vw,40px);
  border-bottom:1px solid var(--ky-line-soft);
}
.ky-section__index{
  font-family:var(--ky-font-mono);font-size:12px;letter-spacing:.24em;
  color:var(--ky-gold);flex:none;
}
.ky-section__title{font-size:clamp(22px,3.4vw,34px);color:var(--ky-cream)}
.ky-section__note{margin-left:auto;font-size:13px;color:var(--ky-t-56);max-width:42ch}
.ky-rule{height:1px;border:0;background:var(--ky-line-soft);margin:clamp(28px,4vw,48px) 0}
.ky-rule--gold{background:linear-gradient(90deg,var(--ky-gold) 0 96px,var(--ky-line-soft) 96px 100%)}

.ky-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:clamp(18px,2.6vw,36px)}
.ky-span-3{grid-column:span 3}
.ky-span-4{grid-column:span 4}
.ky-span-6{grid-column:span 6}
.ky-span-8{grid-column:span 8}
.ky-span-9{grid-column:span 9}
@media (max-width:1024px){
  .ky-span-3{grid-column:span 6}
  .ky-span-4{grid-column:span 6}
  .ky-span-8,.ky-span-9{grid-column:1/-1}
}
@media (max-width:640px){
  .ky-span-3,.ky-span-4,.ky-span-6,.ky-span-8,.ky-span-9{grid-column:1/-1}
}

/* ---------- 5. 跳转链接 ---------- */
.ky-skip{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:10px 18px;border-radius:2px;
  background:var(--ky-cyan);color:var(--ky-ink);
  font-family:var(--ky-font-mono);font-size:12px;letter-spacing:.16em;
  transform:translateY(-180%);
  transition:transform .18s ease;
}
.ky-skip:focus,.ky-skip:focus-visible{transform:translateY(0)}

/* ---------- 6. 页头 ---------- */
.ky-header{
  position:sticky;top:0;z-index:80;
  color:var(--ky-cream);
  background:linear-gradient(180deg,rgba(11,31,26,.99),rgba(11,31,26,.93));
  backdrop-filter:blur(10px);
}
.ky-progress{position:absolute;left:0;right:0;top:0;height:2px;background:rgba(154,165,159,.16);overflow:hidden}
.ky-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--ky-gold),var(--ky-cyan));
  transition:width .12s linear;
}
.ky-header__inner{
  position:relative;
  max-width:var(--ky-shell);margin:0 auto;
  min-height:78px;
  padding:14px var(--ky-gutter);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.ky-header__rule{
  height:1px;
  background:linear-gradient(90deg,var(--ky-cyan) 0 84px,var(--ky-gold) 84px 132px,var(--ky-line-faint) 132px 100%);
}

.ky-brand{display:inline-flex;align-items:center;gap:12px;min-width:0}
.ky-brand__mark{
  flex:none;width:28px;height:28px;
  background:linear-gradient(140deg,var(--ky-cyan),var(--ky-gold) 74%);
  clip-path:polygon(0 0,100% 0,100% 64%,64% 100%,0 100%);
  box-shadow:0 0 0 1px rgba(62,242,199,.32);
  transition:transform .24s ease;
}
.ky-brand:hover .ky-brand__mark{transform:rotate(6deg)}
.ky-brand__text{display:flex;flex-direction:column;gap:3px;min-width:0}
.ky-brand__name{
  font-family:var(--ky-font-display);font-weight:800;
  font-size:clamp(17px,2vw,20px);line-height:1.1;letter-spacing:.05em;
  color:var(--ky-cream);white-space:nowrap;
}
.ky-brand__tagline{
  font-family:var(--ky-font-mono);font-size:10.5px;letter-spacing:.18em;
  color:var(--ky-gold);white-space:nowrap;
}
@media (max-width:519px){.ky-brand__tagline{display:none}}

.ky-navtoggle{
  display:none;align-items:center;gap:10px;
  padding:9px 14px;border:1px solid var(--ky-line-soft);border-radius:2px;
  background:rgba(17,22,20,.62);
  font-family:var(--ky-font-mono);font-size:11px;letter-spacing:.2em;color:var(--ky-cream);
  transition:border-color .18s ease,color .18s ease;
}
.ky-navtoggle:hover{border-color:var(--ky-cyan);color:var(--ky-cyan)}
.ky-navtoggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:18px;height:12px}
.ky-navtoggle__bars span{display:block;height:2px;width:100%;background:currentColor;transition:transform .2s ease}
.ky-navtoggle[aria-expanded="true"] .ky-navtoggle__bars span:first-child{transform:translateY(3.5px) rotate(45deg)}
.ky-navtoggle[aria-expanded="true"] .ky-navtoggle__bars span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

.ky-nav{display:flex;align-items:center;gap:26px}
.ky-nav__list{display:flex;align-items:center;gap:22px;counter-reset:ky-nav}
.ky-nav__item{counter-increment:ky-nav}
.ky-nav__link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:14px;letter-spacing:.08em;color:var(--ky-t-56);
  transition:color .18s ease;
}
.ky-nav__link::before{
  content:"0" counter(ky-nav);
  margin-right:6px;vertical-align:2px;
  font-family:var(--ky-font-mono);font-size:9.5px;letter-spacing:.08em;
  color:var(--ky-gold);opacity:.72;
}
.ky-nav__link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--ky-cyan);transition:width .22s ease;
}
.ky-nav__link:hover{color:var(--ky-cream)}
.ky-nav__link:hover::after{width:100%}
.ky-nav__link[aria-current="page"]{color:var(--ky-cyan)}
.ky-nav__link[aria-current="page"]::after{width:100%}
.ky-nav__link[aria-current="page"]::before{opacity:1}
.ky-nav__utility{
  flex:none;display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;
  border:1px solid rgba(216,178,106,.5);
  background:rgba(216,178,106,.08);
  font-family:var(--ky-font-mono);font-size:11.5px;letter-spacing:.16em;
  color:var(--ky-gold);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.ky-nav__utility::before{content:"";width:6px;height:6px;background:currentColor;transform:rotate(45deg)}
.ky-nav__utility:hover,.ky-nav__utility:focus-visible{background:var(--ky-cyan);color:var(--ky-ink);border-color:var(--ky-cyan)}

@media (max-width:1099px){
  .ky-nav{gap:18px}
  .ky-nav__list{gap:14px}
  .ky-nav__link{font-size:13.5px}
}
@media (max-width:899px){
  .ky-navtoggle{display:inline-flex}
  .ky-nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    padding:6px 0 18px;
    background:var(--ky-char);
    border-bottom:1px solid var(--ky-line-soft);
    box-shadow:0 24px 48px rgba(0,0,0,.46);
    max-height:calc(100vh - 80px);overflow-y:auto;
  }
  .ky-nav[data-open]{display:flex;animation:ky-drop .22s ease both}
  .ky-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .ky-nav__link{
    display:block;padding:14px var(--ky-gutter);
    font-size:15.5px;color:var(--ky-t-78);
    border-bottom:1px solid var(--ky-line-faint);
  }
  .ky-nav__link::after{display:none}
  .ky-nav__link[aria-current="page"]{color:var(--ky-cyan);background:rgba(62,242,199,.06)}
  .ky-nav__utility{
    margin:16px var(--ky-gutter) 0;justify-content:center;
    padding:12px;clip-path:none;font-size:12.5px;
  }
}
@keyframes ky-drop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

/* ---------- 7. 页脚 ---------- */
.ky-footer{
  position:relative;overflow:hidden;
  background:var(--ky-char);
  color:var(--ky-t-78);
  border-top:1px solid var(--ky-line-soft);
}
.ky-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--ky-cyan) 0 120px,var(--ky-gold) 120px 200px,rgba(154,165,159,.2) 200px 100%);
}
.ky-footer__inner{
  max-width:var(--ky-shell);margin:0 auto;
  padding:clamp(48px,6vw,72px) var(--ky-gutter) 28px;
  display:grid;grid-template-columns:1.5fr 1fr 1.2fr;gap:clamp(28px,4vw,56px);
}
.ky-footer__brand{min-width:0}
.ky-footer__brandline{
  font-family:var(--ky-font-display);font-weight:800;
  font-size:clamp(22px,3vw,30px);letter-spacing:.04em;line-height:1.18;
  color:var(--ky-cream);
}
.ky-footer__summary{margin-top:12px;max-width:34ch;font-size:14px;line-height:1.8;color:var(--ky-t-56)}
.ky-footer__note{
  margin-top:16px;
  font-family:var(--ky-font-mono);font-size:11.5px;letter-spacing:.1em;
  color:var(--ky-gold);
}
.ky-footer__heading{
  position:relative;padding-left:14px;margin-bottom:16px;
  font-family:var(--ky-font-mono);font-size:11px;letter-spacing:.26em;
  color:var(--ky-gold);text-transform:uppercase;
}
.ky-footer__heading::before{
  content:"";position:absolute;left:0;top:.55em;width:8px;height:2px;background:var(--ky-cyan);
}
.ky-footer__links{display:grid;gap:10px;font-size:14px;color:var(--ky-t-56)}
.ky-footer__links a{
  display:inline-block;
  transition:color .18s ease,transform .18s ease;
}
.ky-footer__links a:hover,.ky-footer__links a:focus-visible{color:var(--ky-cyan);transform:translateX(3px)}
.ky-footer__label{
  display:inline-block;min-width:38px;margin-right:8px;
  font-family:var(--ky-font-mono);font-size:10.5px;letter-spacing:.16em;
  color:var(--ky-gold);
}
.ky-footer__contact .ky-footer__links{font-family:var(--ky-font-mono);font-size:12.5px;letter-spacing:.03em;line-height:1.9}
.ky-footer__legal{
  grid-column:1/-1;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;
  margin-top:clamp(24px,3vw,40px);padding-top:20px;
  border-top:1px solid var(--ky-line-soft);
  font-family:var(--ky-font-mono);font-size:11.5px;letter-spacing:.06em;
  color:var(--ky-t-34);
}
.ky-footer__copy{margin:0}
.ky-footer__legalinks{display:flex;flex-wrap:wrap;gap:8px 20px}
.ky-footer__legalinks a{transition:color .18s ease}
.ky-footer__legalinks a:hover,.ky-footer__legalinks a:focus-visible{color:var(--ky-cyan)}
@media (max-width:899px){
  .ky-footer__inner{grid-template-columns:1fr 1fr}
  .ky-footer__brand{grid-column:1/-1}
}
@media (max-width:600px){
  .ky-footer__inner{grid-template-columns:1fr;gap:32px}
  .ky-footer__legal{flex-direction:column;align-items:flex-start}
}

/* ---------- 8. 按钮 ---------- */
.ky-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;
  font-family:var(--ky-font-body);font-weight:700;font-size:14px;letter-spacing:.1em;
  background:var(--ky-cyan);color:var(--ky-ink);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
  transition:background .2s ease,color .2s ease;
}
.ky-btn:hover,.ky-btn:focus-visible{background:var(--ky-paper);color:var(--ky-ink)}
.ky-btn--solid{background:var(--ky-gold);color:var(--ky-ink)}
.ky-btn--solid:hover,.ky-btn--solid:focus-visible{background:var(--ky-cyan)}
.ky-btn--ghost{
  background:transparent;color:var(--ky-cream);
  border:1px solid rgba(154,165,159,.42);
  clip-path:none;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.ky-btn--ghost:hover,.ky-btn--ghost:focus-visible{background:rgba(62,242,199,.08);border-color:var(--ky-cyan);color:var(--ky-cyan)}

/* ---------- 9. 面包屑与眉标 ---------- */
.ky-crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--ky-font-mono);font-size:11.5px;letter-spacing:.12em;
  color:var(--ky-t-56);
}
.ky-crumbs__item{display:inline-flex;align-items:center;gap:8px}
.ky-crumbs__link{transition:color .18s ease}
.ky-crumbs__link:hover,.ky-crumbs__link:focus-visible{color:var(--ky-cyan)}
.ky-crumbs__sep{color:var(--ky-gold);opacity:.6}
.ky-crumbs__current{color:var(--ky-cream)}
.ky-kicker{
  font-family:var(--ky-font-mono);font-size:11.5px;letter-spacing:.26em;
  color:var(--ky-gold);
}
.ky-meta{
  font-family:var(--ky-font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--ky-t-56);
}
.ky-aside{
  padding-left:16px;border-left:2px solid var(--ky-gold);
  font-size:13.5px;line-height:1.85;color:var(--ky-t-56);
}

/* ---------- 10. 正文排版 ---------- */
.ky-prose{max-width:68ch;font-size:16.5px;line-height:1.85;color:var(--ky-t-78)}
.ky-prose > * + *{margin-top:1.05em}
.ky-prose h2{font-size:clamp(20px,2.6vw,27px);color:var(--ky-cream);margin-top:1.9em}
.ky-prose h3{font-size:clamp(17px,2vw,20px);color:var(--ky-cream);margin-top:1.6em}
.ky-prose ul,.ky-prose ol{padding-left:1.2em}
.ky-prose ul li{list-style:none;position:relative;padding-left:16px;margin-top:.5em}
.ky-prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:2px;background:var(--ky-cyan)}
.ky-prose ol{counter-reset:ky-ol}
.ky-prose ol li{list-style:none;counter-increment:ky-ol;position:relative;padding-left:28px;margin-top:.5em}
.ky-prose ol li::before{
  content:counter(ky-ol,decimal-leading-zero);position:absolute;left:0;top:.1em;
  font-family:var(--ky-font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--ky-gold);
}
.ky-prose a{color:var(--ky-cyan);text-decoration:underline;text-underline-offset:3px}
.ky-prose blockquote{
  margin:1.6em 0;padding:14px 20px;
  border-left:2px solid var(--ky-gold);
  background:rgba(216,178,106,.06);
  color:var(--ky-t-78);font-size:15.5px;
}
.ky-prose strong{color:var(--ky-cream);font-weight:700}
.ky-prose code{
  font-family:var(--ky-font-mono);font-size:.92em;
  padding:2px 6px;background:rgba(62,242,199,.1);color:var(--ky-cyan);
}
.ky-prose--paper{
  background:var(--ky-paper);color:#2A2318;
  padding:clamp(24px,4vw,48px);
  border-left:3px solid var(--ky-gold);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
}
.ky-prose--paper h2,.ky-prose--paper h3,.ky-prose--paper strong{color:#1D180F}
.ky-prose--paper a{color:var(--ky-accent-paper)}
.ky-prose--paper blockquote{background:rgba(14,107,88,.07);border-left-color:var(--ky-accent-paper);color:#3A3125}
.ky-prose--paper ul li::before{background:var(--ky-accent-paper)}
.ky-prose--paper ol li::before{color:#8A6A2F}

/* ---------- 11. 图片容器基础规则 ---------- */
.ky-frame{
  position:relative;overflow:hidden;
  width:100%;aspect-ratio:16/9;
  background:var(--ky-char);
  border:1px solid var(--ky-line-soft);
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--ky-cut-lg)),calc(100% - var(--ky-cut-lg)) 100%,0 100%);
}
.ky-frame--wide{aspect-ratio:21/9}
.ky-frame--tall{aspect-ratio:4/5}
.ky-frame--square{aspect-ratio:1/1}
.ky-frame > img,.ky-frame > video{width:100%;height:100%;object-fit:cover}
.ky-frame__ph{
  position:absolute;inset:0;
  background:
    repeating-linear-gradient(12deg,rgba(62,242,199,.09) 0 1px,transparent 1px 14px),
    repeating-linear-gradient(-6deg,rgba(216,178,106,.08) 0 1px,transparent 1px 22px),
    radial-gradient(circle at 78% 18%,rgba(62,242,199,.16),transparent 55%),
    linear-gradient(150deg,#12241E,#0B1F1A 62%,#0F1A17);
}
.ky-frame__label{
  position:absolute;left:14px;bottom:12px;z-index:2;
  font-family:var(--ky-font-mono);font-size:10.5px;letter-spacing:.2em;
  color:var(--ky-gold);
  padding:4px 8px;background:rgba(11,31,26,.72);
}
.ky-frame__caption{
  margin-top:10px;
  font-family:var(--ky-font-mono);font-size:11.5px;letter-spacing:.06em;
  color:var(--ky-t-56);
}

/* ---------- 12. 标签 ---------- */
.ky-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  font-family:var(--ky-font-mono);font-size:11px;letter-spacing:.14em;
  border:1px solid currentColor;
  color:#93B39E;background:rgba(111,143,122,.14);
}
.ky-tag--moss{color:#93B39E;background:rgba(111,143,122,.14);border-color:rgba(111,143,122,.5)}
.ky-tag--mist{color:#A6B9CB;background:rgba(124,147,168,.14);border-color:rgba(124,147,168,.5)}
.ky-tag--clay{color:#D3A186;background:rgba(183,122,94,.14);border-color:rgba(183,122,94,.5)}
.ky-tag--lilac{color:#B5ABC4;background:rgba(138,127,155,.14);border-color:rgba(138,127,155,.5)}
.ky-tag--ember{color:#F09B87;background:rgba(224,100,75,.14);border-color:rgba(224,100,75,.55)}

/* ---------- 13. 标签页 ---------- */
.ky-tabs{margin:0}
.ky-tabs__list{
  display:flex;flex-wrap:wrap;gap:4px;
  border-bottom:1px solid var(--ky-line-soft);
  margin-bottom:clamp(20px,2.6vw,32px);
}
.ky-tab{
  position:relative;
  padding:10px 16px;
  font-family:var(--ky-font-mono);font-size:12px;letter-spacing:.16em;
  color:var(--ky-t-56);
  border-bottom:2px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.ky-tab:hover{color:var(--ky-cream)}
.ky-tab[aria-selected="true"]{color:var(--ky-cyan);border-bottom-color:var(--ky-cyan)}
.ky-tabs__panel{animation:ky-fade .22s ease both}
@keyframes ky-fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- 14. 进入视口显现 ---------- */
html[data-reveal-ready] [data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .5s ease,transform .5s ease;
}
html[data-reveal-ready] [data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 15. 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html[data-reveal-ready] [data-reveal]{opacity:1;transform:none;transition:none}
  .ky-brand:hover .ky-brand__mark{transform:none}
}