/* ==========================================================================
   博澳体育 · 共享样式表 /assets/site.css
   设计语言：极简文字建筑 · 夜场数据面板 · 切角与轨迹
   ========================================================================== */

/* 1. Reset ---------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* 2. Tokens --------------------------------------------------------------- */
:root{
  --night:#060B18;
  --panel:#0C1526;
  --steel:#16233C;
  --ice:#E8EEF8;
  --slate:#93A6C4;
  --hairline:#24365A;
  --orange:#FF6A1F;
  --lime:#B8FF3C;
  --paper:#FFFFFF;
  --epl:linear-gradient(100deg,#6C2BD9,#E0245E);
  --csl:linear-gradient(100deg,#C8102E,#F2B01E);

  --bg:var(--night);
  --bg-raise:var(--panel);
  --bg-steel:var(--steel);
  --fg:var(--ice);
  --fg-dim:var(--slate);
  --hair:var(--hairline);
  --accent:var(--orange);
  --accent-ink:#180A02;
  --data:#FFFFFF;

  --font-sans:"Inter","HarmonyOS Sans","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","IBM Plex Mono",SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --shell:1200px;
  --hdr-h:66px;
  --cut:20px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --fs-12:12px;
  --fs-14:14px;
  --fs-17:17px;
  --fs-21:21px;
  --fs-27:27px;
  --fs-34:34px;
}
html[data-theme="light"]{
  --bg:#F4F6FA;
  --bg-raise:#FFFFFF;
  --bg-steel:#E4E9F2;
  --fg:#0A1120;
  --fg-dim:#4A5A76;
  --hair:#C9D3E3;
  --data:#0A1120;
}

/* 3. Base ----------------------------------------------------------------- */
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--fg);
  font-family:var(--font-sans);
  font-size:var(--fs-17);
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.14;text-wrap:balance}
h1{font-size:clamp(2.4rem,6vw,5rem)}
h2{font-size:clamp(1.6rem,3vw,2.4rem)}
h3{font-size:1.25rem;line-height:1.35}
h4{font-size:1rem;line-height:1.4}
p{text-wrap:pretty}
::selection{background:var(--accent);color:var(--accent-ink)}
#main-content{scroll-margin-top:calc(var(--hdr-h) + 14px)}

.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:clamp(18px,4vw,40px)}

/* 4. Skip link & progress ------------------------------------------------- */
.skip-link{
  position:fixed;left:14px;top:-72px;z-index:200;
  padding:10px 18px;background:var(--accent);color:var(--accent-ink);
  font-size:var(--fs-14);font-weight:700;letter-spacing:.02em;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
  transition:top .2s var(--ease);
}
.skip-link:focus{top:14px}
.scroll-progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:150;
  background:linear-gradient(90deg,var(--accent),var(--lime));
  transition:width .12s linear;
}

/* 5. Command bar ---------------------------------------------------------- */
.cmdk{
  position:sticky;top:0;z-index:90;
  background:var(--bg);
  border-bottom:1px solid var(--hair);
}
.cmdk__inner{
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding-inline:clamp(16px,4vw,40px);
  min-height:var(--hdr-h);
  display:flex;align-items:center;gap:clamp(10px,2vw,26px);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;padding:8px 0}
.brand__mark{
  width:30px;height:30px;flex:0 0 auto;display:grid;place-items:center;
  font-size:15px;font-weight:800;line-height:1;color:#fff;
  background-image:var(--epl);
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.brand__text{display:flex;flex-direction:column;gap:1px;min-width:0}
.brand__name{font-size:15px;font-weight:800;letter-spacing:-.01em;line-height:1.2}
.brand__tag{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;line-height:1.2;
  color:var(--fg-dim);white-space:nowrap;
}
.brand:hover .brand__name{color:var(--accent)}

.nav{margin-inline:auto}
.nav__list{display:flex;align-items:center;gap:2px}
.nav__link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:9px 11px;font-size:var(--fs-14);font-weight:600;letter-spacing:0;
  color:var(--fg-dim);white-space:nowrap;
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.nav__link:hover{color:var(--fg);background:var(--bg-steel)}
.nav__link[aria-current="page"]{color:var(--fg)}
.nav__link[aria-current="page"]::after{
  content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;background:var(--accent);
}
.nav__idx{
  font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);opacity:.9;
}
.cmdk__actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}

.theme-toggle{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;font-size:var(--fs-12);font-weight:600;letter-spacing:.02em;
  color:var(--fg-dim);background:var(--bg-steel);
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.theme-toggle:hover{color:var(--fg)}
.theme-toggle__glyph{
  width:12px;height:12px;border-radius:50%;flex:0 0 auto;
  background:linear-gradient(90deg,var(--accent) 0 50%,transparent 50% 100%);
  box-shadow:inset 0 0 0 1px var(--accent);
}
html[data-theme="light"] .theme-toggle__glyph{
  background:var(--accent);box-shadow:inset -4px 0 0 0 var(--bg-steel);
}
.theme-toggle__text{white-space:nowrap}
.status-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 11px;font-family:var(--font-mono);font-size:11px;letter-spacing:.03em;
  color:var(--fg-dim);background:var(--bg-steel);white-space:nowrap;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}
.status-chip__dot{
  width:7px;height:7px;border-radius:50%;background:var(--lime);flex:0 0 auto;
  animation:chip-pulse 2.4s var(--ease) infinite;
}
@keyframes chip-pulse{
  0%{box-shadow:0 0 0 0 rgba(184,255,60,.55)}
  70%{box-shadow:0 0 0 7px rgba(184,255,60,0)}
  100%{box-shadow:0 0 0 0 rgba(184,255,60,0)}
}

/* 6. Buttons -------------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;font-size:var(--fs-14);font-weight:700;line-height:1;letter-spacing:.02em;
  color:var(--fg);background:var(--bg-steel);box-shadow:inset 0 0 0 1px var(--hair);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  transition:background-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:hover{background:var(--steel);color:var(--fg)}
html[data-theme="light"] .btn:hover{background:#D6DDEA}
.btn--primary{background:var(--accent);color:var(--accent-ink);box-shadow:none}
.btn--primary:hover{background:var(--accent);color:var(--accent-ink);filter:brightness(1.08)}
.btn--ghost{background:transparent}
.btn--ghost:hover{background:transparent;box-shadow:inset 0 0 0 1px var(--accent);color:var(--accent)}
.btn--sm{padding:9px 15px;font-size:var(--fs-12)}

/* 7. Nav toggle (mobile) -------------------------------------------------- */
.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:9px 12px;font-size:var(--fs-12);font-weight:700;letter-spacing:.04em;
  color:var(--fg);background:var(--bg-steel);
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}
.nav-toggle__bars{position:relative;width:16px;height:2px;background:currentColor;flex:0 0 auto}
.nav-toggle__bars::before,
.nav-toggle__bars::after{content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;transition:transform .2s var(--ease)}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}
.nav-toggle__text{white-space:nowrap}

/* 8. Quick bar (mobile bottom) ------------------------------------------- */
.quickbar{display:none}

/* 9. Footer --------------------------------------------------------------- */
.site-foot{position:relative;background:var(--bg-raise);border-top:1px solid var(--hair);margin-top:clamp(40px,7vw,90px)}
.site-foot__edge{
  height:3px;width:100%;
  background:linear-gradient(90deg,transparent 0,var(--accent) 8%,var(--accent) 22%,transparent 34%,transparent 100%);
  opacity:.85;
}
.site-foot__inner{padding-block:clamp(36px,5vw,64px)}
.site-foot__top{
  display:grid;grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));
  gap:clamp(22px,3vw,40px);align-items:start;
}
.site-foot__brand{display:flex;flex-direction:column;gap:12px;max-width:34em}
.site-foot__name{font-size:var(--fs-21);font-weight:800;letter-spacing:-.02em}
.site-foot__desc{font-size:var(--fs-14);line-height:1.7;color:var(--fg-dim)}
.site-foot__sig{
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.08em;color:var(--accent);
  padding-left:12px;border-left:2px solid var(--accent);
}
.site-foot__group{display:flex;flex-direction:column;gap:12px}
.site-foot__title{
  font-family:var(--font-mono);font-size:11px;font-weight:700;line-height:1;
  letter-spacing:.16em;color:var(--fg-dim);
}
.site-foot__list{display:flex;flex-direction:column;gap:9px}
.foot-link{
  display:inline-block;font-size:var(--fs-14);font-weight:600;color:var(--fg);
  transition:color .16s var(--ease),transform .16s var(--ease);
}
.foot-link:hover{color:var(--accent);transform:translateX(3px)}
.foot-link[aria-current="page"]{color:var(--accent)}
.foot-link--inline{font-weight:600;color:var(--fg)}
.site-foot__meta{
  margin-top:clamp(28px,4vw,48px);padding-top:20px;border-top:1px solid var(--hair);
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;align-items:baseline;
}
.site-foot__contact{font-size:var(--fs-14);line-height:1.7;color:var(--fg-dim);max-width:60em}
.site-foot__legal{
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.03em;color:var(--fg-dim);white-space:nowrap;
}

/* 10. Layout helpers ------------------------------------------------------ */
.section{padding-block:clamp(44px,7vw,88px)}
.section--tight{padding-block:clamp(26px,4vw,48px)}
.section__head{display:flex;flex-direction:column;gap:14px;max-width:48em;margin-bottom:clamp(20px,3vw,36px)}
.section__lede{font-size:var(--fs-17);line-height:1.8;color:var(--fg-dim);max-width:38em}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.16em;
  color:var(--accent);
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--accent);flex:0 0 auto}
.hair-rule{
  border:0;height:1px;margin:0;
  background:linear-gradient(90deg,transparent,var(--hair) 10%,var(--hair) 90%,transparent);
}
.grid{display:grid;gap:clamp(18px,2.6vw,30px)}
.grid--split{grid-template-columns:minmax(0,7fr) minmax(0,4fr)}
.grid--halves{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--thirds{grid-template-columns:repeat(3,minmax(0,1fr))}
.stack{display:flex;flex-direction:column;gap:var(--stack-gap,18px)}

.cut-panel{
  position:relative;background:var(--bg-raise);
  padding:clamp(18px,3vw,30px);
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
}
.cut-panel--steel{background:var(--bg-steel)}

.rail{
  font-size:var(--fs-14);line-height:1.65;color:var(--fg-dim);
  border-left:2px solid var(--hair);padding-left:16px;
}
.rail__title{
  display:block;margin-bottom:10px;
  font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.14em;color:var(--accent);
}
.rail strong{color:var(--fg);font-weight:700}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 10px;font-size:var(--fs-12);font-weight:700;line-height:1;letter-spacing:.02em;
  color:var(--fg);background:var(--bg-steel);
  clip-path:polygon(7px 0,100% 0,100% 100%,0 100%,0 7px);
}
.tag--epl{background-image:var(--epl);color:#fff}
.tag--csl{background-image:var(--csl);color:#fff}
.tag--live{background:transparent;box-shadow:inset 0 0 0 1px var(--lime);color:var(--lime)}
html[data-theme="light"] .tag--live{color:#4F7A00;box-shadow:inset 0 0 0 1px #7FB300}

.data-num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-weight:700;letter-spacing:-.01em;color:var(--data);
}

/* 11. Media frames -------------------------------------------------------- */
.media-frame{
  position:relative;overflow:hidden;background:var(--bg-steel);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--16x9{aspect-ratio:16/9}
.media-frame--4x3{aspect-ratio:4/3}
.media-frame--1x1{aspect-ratio:1/1}
.media-frame__cap{
  position:absolute;left:0;bottom:0;right:0;
  padding:26px 14px 12px;font-size:var(--fs-12);line-height:1.5;color:#E8EEF8;
  background:linear-gradient(180deg,rgba(6,11,24,0),rgba(6,11,24,.78));
}

/* 12. Prose & breadcrumb ------------------------------------------------- */
.prose{max-width:38em;font-size:var(--fs-17);line-height:1.8}
.prose > * + *{margin-top:1.05em}
.prose h2{font-size:clamp(1.3rem,2.3vw,1.75rem);margin-top:2em}
.prose h3{margin-top:1.6em}
.prose li{position:relative;padding-left:1.15em}
.prose li + li{margin-top:.4em}
.prose li::before{content:"";position:absolute;left:0;top:.8em;width:9px;height:2px;background:var(--accent)}
.prose blockquote{border-left:2px solid var(--accent);padding-left:18px;color:var(--fg-dim)}
.prose strong{font-weight:700;color:var(--fg)}
.prose a{color:var(--accent);border-bottom:1px solid rgba(255,106,31,.45)}
.prose a:hover{border-bottom-color:var(--accent)}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.03em;color:var(--fg-dim);
}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb__sep{color:var(--hair)}
.breadcrumb [aria-current="page"]{color:var(--fg)}

/* 13. Reveal -------------------------------------------------------------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* 14. Responsive ---------------------------------------------------------- */
@media (max-width:1180px){
  .status-chip{display:none}
}
@media (max-width:1040px){
  .cmdk__cta{display:none}
  .nav__link{padding:9px 9px}
}
@media (max-width:980px){
  .grid--split,.grid--halves{grid-template-columns:minmax(0,1fr)}
  .grid--thirds{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-foot__top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-foot__brand{grid-column:1 / -1;max-width:none}
}
@media (max-width:900px){
  :root{--hdr-h:58px}
  .nav-toggle{display:inline-flex}
  .cmdk__actions{gap:8px}
  .nav{
    position:fixed;left:0;right:0;top:var(--hdr-h);z-index:95;
    margin:0;padding:10px clamp(16px,4vw,32px) 22px;
    background:var(--bg);border-bottom:1px solid var(--hair);
    max-height:calc(100vh - var(--hdr-h));overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }
  [data-nav][data-open]{
    opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto;
  }
  .nav__list{flex-direction:column;align-items:stretch;gap:0}
  .nav__item + .nav__item{border-top:1px solid var(--hair)}
  .nav__link{padding:15px 4px;font-size:var(--fs-17);width:100%;justify-content:flex-start}
  .nav__link[aria-current="page"]::after{display:none}
  .nav__link[aria-current="page"]{color:var(--accent)}
  .nav__idx{font-size:11px}
}
@media (max-width:720px){
  body{padding-bottom:60px}
  .theme-toggle__text{display:none}
  .grid--thirds{grid-template-columns:minmax(0,1fr)}
  .site-foot__top{grid-template-columns:minmax(0,1fr);gap:26px}
  .site-foot__meta{flex-direction:column;gap:10px}
  .quickbar{
    display:grid;grid-template-columns:repeat(4,1fr);
    position:fixed;left:0;right:0;bottom:0;z-index:88;
    background:var(--bg-raise);border-top:1px solid var(--hair);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .quickbar__link{
    display:flex;align-items:center;justify-content:center;
    padding:15px 4px;font-size:var(--fs-12);font-weight:700;letter-spacing:.04em;
    color:var(--fg-dim);border-top:2px solid transparent;
    transition:color .16s var(--ease),border-color .16s var(--ease);
  }
  .quickbar__link + .quickbar__link{border-left:1px solid var(--hair)}
  .quickbar__link:hover{color:var(--fg)}
  .quickbar__link[aria-current="page"]{color:var(--accent);border-top-color:var(--accent)}
}
@media (max-width:420px){
  .brand__tag{display:none}
  .nav-toggle__text{display:none}
}

/* 15. Motion preferences -------------------------------------------------- */
@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}
  .scroll-progress{transition:none}
  .status-chip__dot{animation:none;box-shadow:none}
}