/* ==========================================================================
   K8体育手机 · 夜赛数据台 — 共享样式 /assets/site.css
   1 Reset 2 变量 3 中文排版 4 通用组件 5 页头 6 页脚 7 响应式与降级
   ========================================================================== */

/* 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,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img,svg,picture,video{max-width:100%;display:block;}
button{font:inherit;color:inherit;background:none;border:0;}
a{color:inherit;}
main{display:block;}

/* 2 变量 ------------------------------------------------------------------ */
:root{
  --ink-900:#150A26;
  --ink-800:#1B0F30;
  --ink-700:#241340;
  --ink-500:#3B2461;
  --paper:#F2E7D4;
  --paper-2:#E6D8C0;
  --paper-ink:#1E1512;
  --paper-soft:#6B5546;
  --orange:#F2621B;
  --orange-lt:#FFA45C;
  --pulse:#3DF08A;
  --wood:#A9743F;
  --muted:#B7A4D6;
  --line:rgba(183,164,214,.28);
  --line-strong:rgba(183,164,214,.5);
  --shadow-card:0 22px 46px -26px rgba(0,0,0,.9);
  --radius-card:16px;
  --radius-notch:4px;
  --shell:1200px;
  --rail:224px;
  --gutter:clamp(16px,4vw,40px);
  --step:220ms;
  --font-display:'Archivo Black','Barlow Condensed','Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
}

/* 3 中文排版 --------------------------------------------------------------- */
body{
  min-height:100vh;
  background:
    radial-gradient(1100px 560px at 80% -10%, rgba(59,36,97,.55), transparent 62%),
    var(--ink-900);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{font-weight:700;line-height:1.28;letter-spacing:-.01em;}
h1{font-size:clamp(26px,4.6vw,42px);}
h2{font-size:clamp(21px,3.2vw,30px);}
h3{font-size:clamp(18px,2.2vw,21px);}
.num,.stat-num,.chapter-head__num,.footer-brand__mark,.brand-island__mark{font-family:var(--font-display);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.annotation,.note-line{font-weight:300;font-size:13px;line-height:1.7;color:var(--muted);}
strong,b{font-weight:700;}
:focus-visible{outline:3px solid var(--orange-lt);outline-offset:3px;border-radius:6px;}

/* 4 通用组件 --------------------------------------------------------------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter);}

.grid{display:grid;gap:clamp(16px,2.4vw,24px);}
.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));}

.rail{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);gap:clamp(20px,3vw,40px);align-items:start;}
.rail__side{position:sticky;top:96px;align-self:start;}
.rail__main{min-width:0;}
.rail__title{font-size:12px;letter-spacing:.16em;color:var(--muted);margin-bottom:10px;}
.rail__list{display:grid;gap:4px;}
.rail__link{
  display:block;padding:9px 12px;border-radius:0 10px 10px 0;
  border-left:3px solid transparent;
  color:var(--muted);font-size:14px;text-decoration:none;
  transition:color var(--step) ease,background var(--step) ease,border-color var(--step) ease;
}
.rail__link:hover{color:var(--paper);background:rgba(59,36,97,.55);}
.rail__link[aria-current="page"],.rail__link.is-active{
  color:var(--orange-lt);border-left-color:var(--orange);background:rgba(242,98,27,.1);
}

.chapter-head{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:baseline;gap:6px 14px;margin-bottom:clamp(18px,3vw,30px);}
.chapter-head__num{grid-row:1 / span 2;font-size:clamp(30px,5vw,46px);line-height:1;color:var(--orange);}
.chapter-head__title{font-size:clamp(20px,3vw,28px);}
.chapter-head__note{grid-column:2;font-size:13px;font-weight:300;color:var(--muted);}
.chapter-band{height:8px;background:var(--wood);opacity:.72;border-radius:2px;margin:clamp(32px,6vw,72px) 0;}

.paper-card{
  position:relative;
  background:var(--paper);
  color:var(--paper-ink);
  border-radius:var(--radius-card) var(--radius-notch) var(--radius-card) var(--radius-notch);
  padding:clamp(18px,2.4vw,28px);
  box-shadow:var(--shadow-card);
}
.paper-card__head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  padding-bottom:12px;margin-bottom:14px;border-bottom:1px solid rgba(30,21,18,.16);}
.paper-card__title{font-size:17px;font-weight:700;}
.paper-card__tag{font-size:11px;letter-spacing:.14em;color:var(--paper-soft);border:1px solid rgba(30,21,18,.22);border-radius:999px;padding:3px 10px;}
.paper-card__body{font-size:15px;line-height:1.75;}
.paper-card__foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:16px;padding-top:12px;border-top:1px dashed rgba(30,21,18,.24);
  font-size:12px;font-weight:300;color:var(--paper-soft);}

.prose{max-width:68ch;font-size:16px;line-height:1.85;color:rgba(242,231,212,.92);}
.prose p+p{margin-top:1em;}
.prose h3{margin:1.6em 0 .5em;font-size:19px;}
.prose strong{color:var(--paper);}
.prose a{color:var(--orange-lt);text-decoration:none;border-bottom:1px solid rgba(255,164,92,.45);}
.prose a:hover{border-bottom-color:var(--orange-lt);}
.prose--paper{color:var(--paper-ink);}
.prose--paper p+p{margin-top:.9em;}
.prose--paper strong{color:var(--paper-ink);}
.prose--paper a{color:#A83D0C;border-bottom-color:rgba(168,61,12,.4);}

.data-scroll{overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x proximity;padding-bottom:10px;}
.data-scroll::-webkit-scrollbar{height:8px;}
.data-scroll::-webkit-scrollbar-track{background:rgba(59,36,97,.4);border-radius:99px;}
.data-scroll::-webkit-scrollbar-thumb{background:var(--ink-500);border-radius:99px;}
.data-scroll__col{scroll-snap-align:start;}

.breadcrumb{padding:18px 0 0;}
.breadcrumb__list{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;}
.breadcrumb__item{display:flex;align-items:center;gap:8px;color:var(--muted);}
.breadcrumb__item+.breadcrumb__item::before{content:"/";color:var(--ink-500);}
.breadcrumb__link{color:var(--muted);text-decoration:none;border-bottom:1px solid transparent;}
.breadcrumb__link:hover{color:var(--orange-lt);border-bottom-color:var(--orange-lt);}
.breadcrumb__current{color:var(--paper);font-weight:500;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;border-radius:999px;border:1px solid transparent;
  font-family:var(--font-body);font-size:14px;font-weight:700;line-height:1.2;
  text-decoration:none;cursor:pointer;white-space:nowrap;
  transition:background var(--step) ease,color var(--step) ease,border-color var(--step) ease,transform var(--step) ease;
}
.btn:hover{transform:translateY(-2px);}
.btn--primary{background:var(--orange);color:var(--paper-ink);}
.btn--primary:hover{background:var(--orange-lt);}
.btn--ghost{background:transparent;color:var(--paper);border-color:var(--line);}
.btn--ghost:hover{border-color:var(--orange);color:var(--orange-lt);}
.btn--paper{background:var(--paper);color:var(--paper-ink);}
.btn--paper:hover{background:var(--paper-2);}
.btn--sm{padding:8px 14px;font-size:13px;}

.stat-num{font-size:clamp(30px,6vw,52px);line-height:1;color:var(--paper);}
.stat-num--orange{color:var(--orange);}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  background:rgba(242,98,27,.16);color:var(--orange-lt);border:1px solid rgba(242,98,27,.42);}
.badge--live{background:rgba(61,240,138,.14);color:var(--pulse);border-color:rgba(61,240,138,.42);}
.pulse-dot{width:8px;height:8px;flex:none;border-radius:50%;background:var(--pulse);animation:k8-pulse 1.6s ease-out infinite;}
@keyframes k8-pulse{
  0%{box-shadow:0 0 0 0 rgba(61,240,138,.55);}
  70%{box-shadow:0 0 0 10px rgba(61,240,138,0);}
  100%{box-shadow:0 0 0 0 rgba(61,240,138,0);}
}

.media-frame{
  position:relative;overflow:hidden;border:1px solid var(--line);
  border-radius:var(--radius-card) var(--radius-notch) var(--radius-card) var(--radius-notch);
  background:linear-gradient(160deg,var(--ink-700),var(--ink-900));
}
.media-frame__inner{width:100%;aspect-ratio:16 / 10;}
.media-frame__inner>img,.media-frame__inner>picture,.media-frame__inner>picture>img,.media-frame__inner>svg{
  width:100%;height:100%;object-fit:cover;
}
.media-frame--wide .media-frame__inner{aspect-ratio:21 / 9;}
.media-frame--tall .media-frame__inner{aspect-ratio:4 / 5;}
.media-frame__placeholder{width:100%;height:100%;display:grid;place-items:center;
  color:var(--ink-500);font-size:12px;letter-spacing:.2em;}
.media-frame__caption{padding:10px 14px;font-size:12px;font-weight:300;color:var(--muted);
  border-top:1px solid var(--line);background:rgba(21,10,38,.72);}

.read-progress{position:fixed;inset:0 0 auto 0;height:3px;z-index:90;background:rgba(59,36,97,.6);pointer-events:none;}
.read-progress__fill{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--orange),var(--orange-lt));}

.skip-link{
  position:absolute;left:16px;top:-60px;z-index:120;
  padding:10px 16px;border-radius:0 0 10px 10px;
  background:var(--orange);color:var(--paper-ink);font-size:14px;font-weight:700;text-decoration:none;
  transition:top var(--step) ease;
}
.skip-link:focus{top:0;}

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

/* 5 页头 ------------------------------------------------------------------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,#180B2B 0%,#150A26 100%);
  border-bottom:1px solid var(--line);
}
.site-header__inner{
  display:flex;align-items:center;gap:16px;
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding:12px var(--gutter);
  transition:padding var(--step) ease;
}
.site-header[data-shrunk="true"] .site-header__inner{padding-block:6px;}
.site-header[data-shrunk="true"] .brand-island__tagline{display:none;}

.brand-island{flex:none;}
.brand-island__link{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 16px 6px 6px;border-radius:999px;
  background:var(--ink-700);border:1px solid var(--line);
  text-decoration:none;
  transition:border-color var(--step) ease,background var(--step) ease;
}
.brand-island__link:hover{border-color:var(--orange);background:rgba(59,36,97,.85);}
.brand-island__mark{
  display:grid;place-items:center;width:34px;height:34px;border-radius:50%;
  background:var(--orange);color:var(--paper-ink);font-size:14px;line-height:1;
}
.brand-island__text{display:flex;flex-direction:column;line-height:1.15;}
.brand-island__name{font-size:15px;font-weight:700;color:var(--paper);white-space:nowrap;}
.brand-island__tagline{font-size:11px;font-weight:300;letter-spacing:.2em;color:var(--muted);}

.site-nav{
  flex:1 1 auto;min-width:0;
  display:flex;align-items:center;justify-content:center;gap:2px;
  background:rgba(36,19,64,.86);
  border:1px solid var(--line);border-radius:999px;padding:4px;
}
.site-nav__list{display:flex;align-items:center;gap:2px;}
.site-nav__link{
  display:block;padding:8px 14px;border-radius:999px;
  color:var(--muted);font-size:14px;font-weight:500;text-decoration:none;white-space:nowrap;
  box-shadow:inset 3px 0 0 transparent;
  transition:color var(--step) ease,background var(--step) ease,box-shadow var(--step) ease;
}
.site-nav__link:hover{color:var(--paper);background:rgba(59,36,97,.75);}
.site-nav__link[aria-current="page"]{
  color:var(--orange-lt);background:rgba(242,98,27,.13);box-shadow:inset 3px 0 0 var(--orange);
}
.site-nav__extra{display:none;}
.site-nav__extra-title{font-size:11px;letter-spacing:.2em;color:var(--muted);margin-bottom:10px;}
.site-nav__chips{display:flex;flex-wrap:wrap;gap:8px;}
.site-nav__chip{
  display:inline-flex;align-items:center;padding:7px 12px;border-radius:999px;
  border:1px solid var(--line);color:var(--paper);font-size:13px;text-decoration:none;
  transition:border-color var(--step) ease,color var(--step) ease;
}
.site-nav__chip:hover{border-color:var(--orange);color:var(--orange-lt);}

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

.nav-toggle{
  display:none;position:relative;z-index:100;
  width:44px;height:44px;flex:none;border-radius:999px;
  background:var(--ink-700);border:1px solid var(--line);
  align-items:center;justify-content:center;cursor:pointer;
  transition:border-color var(--step) ease;
}
.nav-toggle:hover{border-color:var(--orange);}
.nav-toggle__bars{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--paper);}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--paper);
  transition:transform var(--step) ease,top var(--step) ease;
}
.nav-toggle__bars::before{top:-6px;}
.nav-toggle__bars::after{top:6px;}
.site-header[data-open="true"] .nav-toggle__bars{background:transparent;}
.site-header[data-open="true"] .nav-toggle__bars::before{top:0;transform:rotate(45deg);}
.site-header[data-open="true"] .nav-toggle__bars::after{top:0;transform:rotate(-45deg);}

.nav-scrim{
  position:fixed;inset:0;z-index:78;background:rgba(21,10,38,.74);
  opacity:0;visibility:hidden;transition:opacity var(--step) ease,visibility var(--step) ease;
}
body.nav-locked{overflow:hidden;}

/* 6 页脚 ------------------------------------------------------------------- */
.site-footer{
  margin-top:clamp(56px,9vw,112px);
  background:var(--ink-700);
  border-top:8px solid var(--wood);
  color:var(--paper);
}
.site-footer__inner{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);
  gap:clamp(24px,4vw,56px);
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding:clamp(32px,5vw,56px) var(--gutter) clamp(24px,3vw,36px);
}
.footer-brand__mark{font-size:22px;color:var(--paper);}
.footer-brand__tagline{margin-top:4px;font-size:12px;font-weight:300;letter-spacing:.24em;color:var(--orange-lt);}
.footer-brand__note{margin-top:14px;max-width:34ch;font-size:13px;font-weight:300;line-height:1.75;color:var(--muted);}
.footer-status{display:inline-flex;align-items:center;gap:8px;margin-top:16px;
  font-size:12px;letter-spacing:.08em;color:var(--pulse);}
.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,3vw,32px);}
.footer-col__title{
  padding-bottom:8px;margin-bottom:14px;border-bottom:1px solid var(--line);
  font-size:12px;font-weight:700;letter-spacing:.18em;color:var(--paper);
}
.footer-col__list{display:grid;gap:10px;}
.footer-col__link{
  display:inline-block;padding-left:0;
  color:var(--muted);font-size:14px;text-decoration:none;
  border-left:2px solid transparent;
  transition:color var(--step) ease,padding-left var(--step) ease,border-color var(--step) ease;
}
.footer-col__link:hover{color:var(--paper);padding-left:8px;border-left-color:var(--orange);}
.footer-col__link[aria-current="page"]{color:var(--orange-lt);border-left-color:var(--orange);padding-left:8px;}

.footer-legal{border-top:1px solid var(--line);background:var(--ink-900);}
.footer-legal__inner{
  display:grid;gap:8px;
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding:20px var(--gutter) 32px;
}
.footer-legal__line{font-size:13px;font-weight:300;line-height:1.8;color:var(--muted);}
.footer-legal__service{font-size:12px;font-weight:300;color:var(--paper-soft);}
.footer-legal__meta{display:flex;flex-wrap:wrap;gap:10px 18px;font-size:12px;font-weight:300;color:var(--muted);}
.footer-legal__icp{color:var(--paper);}
.footer-legal__link{color:var(--muted);text-decoration:none;border-bottom:1px solid transparent;}
.footer-legal__link:hover{color:var(--orange-lt);border-bottom-color:var(--orange-lt);}

/* 7 响应式与降级 ----------------------------------------------------------- */
@media (max-width:1024px){
  .nav-toggle{display:inline-flex;}
  .header-actions__cta{display:none;}

  .site-nav{
    position:fixed;top:0;right:0;z-index:80;
    width:min(340px,88vw);height:100dvh;
    display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:20px;padding:96px 20px 32px;
    border:0;border-left:1px solid var(--line);border-radius:0;
    background:var(--ink-700);
    overflow-y:auto;
    transform:translateX(105%);visibility:hidden;
    transition:transform var(--step) ease,visibility var(--step) ease;
  }
  .site-header[data-open="true"] .site-nav{transform:translateX(0);visibility:visible;}
  .site-header[data-open="true"] .nav-scrim{opacity:1;visibility:visible;}

  .site-nav__list{flex-direction:column;align-items:stretch;gap:4px;}
  .site-nav__link{
    padding:14px 16px;border-radius:10px;font-size:16px;
    border-left:3px solid transparent;box-shadow:none;
  }
  .site-nav__link[aria-current="page"]{
    border-left-color:var(--orange);background:rgba(242,98,27,.12);box-shadow:none;
  }
  .site-nav__extra{display:block;padding-top:18px;border-top:1px solid var(--line);}

  .rail{grid-template-columns:minmax(0,1fr);gap:24px;}
  .rail__side{position:static;top:auto;}
  .rail__list{grid-auto-flow:column;grid-auto-columns:minmax(140px,1fr);overflow-x:auto;padding-bottom:6px;}
  .rail__link{border-radius:10px;border-left:0;border-bottom:3px solid transparent;}
  .rail__link[aria-current="page"],.rail__link.is-active{border-left:0;border-bottom-color:var(--orange);}
}

@media (max-width:760px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .site-footer__inner{grid-template-columns:minmax(0,1fr);}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));}
  .brand-island__tagline{display:none;}
}

@media (max-width:520px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr);}
  .footer-cols{grid-template-columns:minmax(0,1fr);}
  .site-header__inner{gap:10px;}
  .brand-island__link{padding:5px 12px 5px 5px;}
  .brand-island__mark{width:30px;height:30px;font-size:12px;}
  .chapter-head{grid-template-columns:auto minmax(0,1fr);}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .pulse-dot{animation:none;box-shadow:0 0 0 3px rgba(61,240,138,.22);}
  [data-reveal]{opacity:1;transform:none;}
  .btn:hover{transform:none;}
}