/* ============================================================
   K1娱乐中心 — /assets/site.css
   夜间球馆数据控制室：框架式导航 / Bento 底座 / 纸张叠层
   ============================================================ */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;overflow-x:hidden;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video,canvas{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%}
i,em{font-style:normal}

/* ---------- 2. tokens ---------- */
:root{
  --indigo:#101B3A;
  --charcoal:#14161A;
  --midnight:#07090D;
  --lime:#C6F24E;
  --amber:#FF9A2E;
  --magenta:#FF3E7F;
  --paper:#F2EDE3;
  --steel:#8A93A6;
  --cyan:#3ED8C8;
  --mirror:#D8DEE9;

  --bg:var(--indigo);
  --bg-deep:var(--midnight);
  --panel:var(--charcoal);
  --ink:var(--paper);
  --ink-soft:var(--mirror);
  --ink-mute:var(--steel);
  --line:rgba(138,147,166,.26);
  --line-soft:rgba(138,147,166,.13);
  --line-strong:rgba(138,147,166,.5);
  --accent:var(--lime);
  --accent-2:var(--amber);
  --alert:var(--magenta);

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

  --rail-w:236px;
  --topbar-h:58px;
  --wrap-max:1180px;
  --gap:clamp(16px,2.1vw,26px);
  --pad-x:clamp(18px,3.2vw,40px);
  --dur:200ms;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- 3. base ---------- */
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:.01em;
  color:var(--ink);
  background-color:var(--bg);
  background-image:
    radial-gradient(760px 460px at 6% -8%, rgba(62,216,200,.13), transparent 62%),
    radial-gradient(700px 520px at 104% 2%, rgba(255,154,46,.10), transparent 58%);
  background-repeat:no-repeat;
  padding-top:var(--topbar-h);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
#main-content{display:block}
[id]{scroll-margin-top:calc(var(--topbar-h) + 20px)}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.05;
  letter-spacing:-.01em;
  color:var(--ink);
}
h1{font-size:clamp(34px,5.2vw,62px)}
h2{font-size:clamp(23px,2.9vw,34px)}
h3{font-size:clamp(19px,2vw,23px)}
h4{font-size:16px;letter-spacing:.02em}
p{max-width:78ch}

.num,.stat__value,.footer__icp,[data-year]{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
}
.caption{font-size:12.5px;line-height:1.6;color:var(--ink-mute);margin-top:8px}
.prose{max-width:68ch}
.prose p+p{margin-top:1.2em}
.prose strong{color:var(--lime);font-weight:700}

/* ---------- 4. a11y ---------- */
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:2px}
.skip-link{
  position:fixed;left:14px;top:-120px;z-index:200;
  padding:10px 18px;
  background:var(--lime);color:var(--midnight);
  font-size:14px;font-weight:700;letter-spacing:.04em;
  border-radius:2px;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- 5. layout ---------- */
.wrap{width:min(var(--wrap-max),100% - 2*var(--pad-x));margin-inline:auto}
.section{padding-block:clamp(34px,5vw,64px)}
.section--tight{padding-block:clamp(20px,3vw,34px)}
.section__head{display:flex;flex-direction:column;gap:10px;margin-bottom:clamp(18px,2.6vw,30px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:11px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--lime);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime)}
.lede{font-size:clamp(15px,1.35vw,17px);line-height:1.8;color:var(--ink-soft);max-width:62ch}

.grid{display:grid;gap:var(--gap)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(258px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(214px,1fr))}
.grid--12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
@media (max-width:767px){.grid--12{grid-template-columns:repeat(4,minmax(0,1fr))}}

/* ---------- 6. buttons / tags / ticker ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:9px 16px;
  font-size:13.5px;font-weight:700;letter-spacing:.02em;line-height:1.2;
  color:var(--ink);background:transparent;
  border:1px solid var(--line-strong);border-radius:2px;
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{border-color:var(--lime);color:var(--lime);background:rgba(198,242,78,.06)}
.btn--primary:hover{background:var(--lime);color:var(--midnight)}
.btn--ghost{border-color:var(--line);color:var(--ink-soft)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--paper{background:var(--paper);border-color:var(--paper);color:var(--midnight)}
.btn--paper:hover{background:var(--amber);border-color:var(--amber)}
.btn--sm{padding:6px 11px;font-size:12px}
.btn--block{width:100%}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;border:1px solid var(--line-strong);border-radius:2px;
  font-size:11px;font-weight:700;letter-spacing:.1em;color:var(--ink-soft);
  white-space:nowrap;
}
.tag--lime{color:var(--lime);border-color:rgba(198,242,78,.55);background:rgba(198,242,78,.09)}
.tag--amber{color:var(--amber);border-color:rgba(255,154,46,.55);background:rgba(255,154,46,.09)}
.tag--magenta{color:var(--magenta);border-color:rgba(255,62,127,.55);background:rgba(255,62,127,.09)}

.ticker{
  display:flex;overflow-x:auto;overscroll-behavior-x:contain;
  border-block:1px solid var(--line);
  background:rgba(7,9,13,.62);
  scrollbar-width:thin;
}
.ticker__item{
  flex:0 0 auto;display:flex;align-items:baseline;gap:9px;
  padding:12px 22px;border-right:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:12.5px;color:var(--ink-mute);white-space:nowrap;
}
.ticker__item b{color:var(--lime);font-weight:700}

/* ---------- 7. breadcrumbs ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  padding-block:18px;font-size:12.5px;color:var(--ink-mute);
}
.breadcrumbs li{display:flex;align-items:center;gap:9px}
.breadcrumbs li+li::before{content:"/";color:rgba(138,147,166,.55)}
.breadcrumbs a{color:var(--ink-soft);transition:color var(--dur) var(--ease)}
.breadcrumbs a:hover{color:var(--cyan)}
.breadcrumbs [aria-current="page"]{color:var(--lime)}

/* ---------- 8. panels / stat / figure ---------- */
.panel{
  position:relative;
  background:linear-gradient(180deg,rgba(20,22,26,.96),rgba(11,14,22,.96));
  border:1px solid var(--line);border-radius:2px;
  padding:clamp(18px,2.2vw,26px);
}
.panel--paper{background:var(--paper);color:var(--indigo);border-color:rgba(16,27,58,.18)}
.panel--paper h2,.panel--paper h3,.panel--paper h4{color:var(--indigo)}
.panel--focus{border-color:rgba(198,242,78,.5);box-shadow:inset 0 0 0 1px rgba(198,242,78,.12)}
.panel--flush{padding:0;overflow:hidden}

.stat{display:flex;flex-direction:column;gap:5px}
.stat__value{font-size:clamp(26px,3.4vw,40px);font-weight:700;line-height:1;color:var(--lime)}
.stat__label{font-size:12px;letter-spacing:.08em;color:var(--ink-mute)}

.figure{margin:0}
.figure__frame{
  position:relative;display:block;overflow:hidden;
  border:1px solid var(--line);border-radius:2px;
  background-color:var(--midnight);
  background-image:
    linear-gradient(135deg,rgba(62,216,200,.14),rgba(255,154,46,.11) 68%,rgba(255,62,127,.09)),
    repeating-linear-gradient(90deg,rgba(138,147,166,.16) 0 1px,transparent 1px 36px),
    repeating-linear-gradient(0deg,rgba(138,147,166,.10) 0 1px,transparent 1px 36px);
}
.figure__frame::before{content:"";display:block;width:100%;padding-top:var(--ratio,56.25%)}
.figure__frame>img,
.figure__frame>svg,
.figure__frame>video,
.figure__frame>picture{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.figure__frame--wide{--ratio:42%}
.figure__frame--tall{--ratio:118%}
.figure__frame--square{--ratio:100%}
.figure__cap{font-size:12.5px;line-height:1.6;color:var(--ink-mute);margin-top:10px}

/* ============================================================
   9. HEADER — 框架式导航
   ============================================================ */
.site-header{position:relative;z-index:60}

/* 9.1 顶部状态条 */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:70;
  height:var(--topbar-h);
  display:flex;align-items:center;
  background:linear-gradient(180deg,#0B0F1C 0%,var(--midnight) 100%);
  border-bottom:1px solid var(--line);
}
.topbar::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--lime) 0%,var(--cyan) 34%,var(--amber) 68%,var(--magenta) 100%);
  opacity:.92;
}
.topbar__inner{
  display:flex;align-items:center;gap:16px;
  width:100%;padding-inline:16px;
}
@media (min-width:1024px){.topbar__inner{padding-inline:24px}}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand__mark{
  display:grid;place-items:center;width:38px;height:38px;
  background:var(--lime);color:var(--midnight);border-radius:2px;
  font-family:var(--font-display);font-weight:800;font-size:18px;letter-spacing:-.02em;
  box-shadow:0 0 0 1px rgba(198,242,78,.35),0 0 18px rgba(198,242,78,.22);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-family:var(--font-display);font-weight:800;font-size:16px;letter-spacing:.02em;color:var(--ink)}
.brand__slogan{font-size:11px;letter-spacing:.06em;color:var(--ink-mute)}

.topbar__status{
  display:none;align-items:center;gap:9px;
  padding:5px 13px;border:1px solid var(--line);border-radius:999px;
  background:rgba(62,216,200,.05);
  font-size:12.5px;line-height:1.4;color:var(--ink-soft);white-space:nowrap;
}
@media (min-width:1100px){.topbar__status{display:inline-flex}}
.pulse{
  width:7px;height:7px;border-radius:50%;background:var(--amber);flex:0 0 auto;
  animation:pulse 1.9s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(255,154,46,.55)}
  70%{box-shadow:0 0 0 9px rgba(255,154,46,0)}
  100%{box-shadow:0 0 0 0 rgba(255,154,46,0)}
}

.topbar__actions{display:flex;align-items:center;gap:12px;margin-left:auto;min-width:0}
.topbar__utility{display:none;align-items:center;gap:18px}
@media (min-width:980px){.topbar__utility{display:flex}}
.util-link{
  position:relative;font-size:13px;color:var(--ink-mute);
  transition:color var(--dur) var(--ease);
}
.util-link::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;
  background:var(--cyan);transition:width var(--dur) var(--ease);
}
.util-link:hover{color:var(--cyan)}
.util-link:hover::after{width:100%}
.topbar__cta{display:none}
@media (min-width:600px){.topbar__cta{display:inline-flex}}

.nav-toggle{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 12px;border:1px solid var(--line-strong);border-radius:2px;
  color:var(--ink-soft);font-size:12.5px;font-weight:700;letter-spacing:.08em;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle[aria-expanded="true"]{color:var(--lime);border-color:var(--lime)}
.nav-toggle__bars{position:relative;width:18px;height:12px;flex:0 0 auto}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
  transition:transform var(--dur) var(--ease),top var(--dur) var(--ease);
}
.nav-toggle__bars::before{top:1px}
.nav-toggle__bars::after{top:9px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:5.5px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:5.5px;transform:rotate(-45deg)}
@media (min-width:1024px){.nav-toggle{display:none}}

.topbar__progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:rgba(138,147,166,.14);overflow:hidden;
}
.progress-bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),var(--lime));
  transition:transform 120ms linear;
}

/* 9.2 左侧框架导航栏 */
.site-rail{
  position:fixed;top:var(--topbar-h);left:0;bottom:0;z-index:55;
  width:var(--rail-w);
  display:flex;flex-direction:column;
  padding:22px 0 20px;
  background:linear-gradient(180deg,#14161A 0%,#0C0F18 58%,#07090D 100%);
  border-right:1px solid var(--line);
  overflow-y:auto;overscroll-behavior:contain;
}
.rail-head{display:flex;align-items:center;gap:10px;padding:0 22px 14px}
.rail-head__label{font-size:11px;font-weight:700;letter-spacing:.16em;color:var(--ink-mute)}
.rail-head__line{flex:1;height:1px;background:var(--line)}

.site-nav{flex:1 1 auto}
.nav-list{display:flex;flex-direction:column}
.nav-link{
  display:flex;align-items:center;gap:12px;
  padding:12px 22px;border-left:3px solid transparent;
  color:var(--ink-soft);font-size:15px;font-weight:500;
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),
             border-color var(--dur) var(--ease);
}
.nav-link__idx{
  font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.04em;
  color:var(--ink-mute);flex:0 0 auto;
  transition:color var(--dur) var(--ease);
}
.nav-link__label{transition:transform var(--dur) var(--ease)}
.nav-link:hover{color:var(--ink);background:rgba(62,216,200,.07);border-left-color:var(--cyan)}
.nav-link:hover .nav-link__label{transform:translateX(3px)}
.nav-link:hover .nav-link__idx{color:var(--cyan)}
.nav-link[aria-current="page"]{color:var(--lime);background:rgba(198,242,78,.09);border-left-color:var(--lime)}
.nav-link[aria-current="page"] .nav-link__idx{color:var(--lime)}

.rail-foot{
  margin:0 22px;padding-top:16px;
  border-top:1px dashed rgba(138,147,166,.3);
}
.rail-foot__label{display:block;font-size:11px;font-weight:700;letter-spacing:.16em;color:var(--ink-mute)}
.rail-scale{display:flex;align-items:flex-end;gap:3px;height:26px;margin:10px 0 8px}
.rail-scale i{flex:1 1 auto;height:30%;background:rgba(138,147,166,.45);border-radius:1px}
.rail-scale i:nth-child(2){height:52%}
.rail-scale i:nth-child(3){height:38%}
.rail-scale i:nth-child(4){height:74%;background:var(--lime)}
.rail-scale i:nth-child(5){height:46%}
.rail-scale i:nth-child(6){height:62%}
.rail-scale i:nth-child(7){height:34%}
.rail-scale i:nth-child(8){height:86%;background:var(--amber)}
.rail-scale i:nth-child(9){height:44%}
.rail-scale i:nth-child(10){height:56%}
.rail-scale i:nth-child(11){height:30%}
.rail-scale i:nth-child(12){height:68%}
.rail-foot__note{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--ink-mute)}

.rail-actions{display:none;padding:18px 22px 0}
.rail-actions__links{display:flex;gap:18px;margin-top:14px}

@media (max-width:1023px){
  .site-rail{
    width:min(86vw,320px);
    padding-bottom:34px;
    transform:translateX(-104%);
    visibility:hidden;
    box-shadow:30px 0 70px rgba(0,0,0,.6);
    transition:transform 220ms var(--ease),visibility 0s linear 220ms;
  }
  .site-rail[data-open]{
    transform:none;visibility:visible;
    transition:transform 220ms var(--ease),visibility 0s;
  }
  .rail-actions{display:block}
}
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
}

/* ============================================================
   10. FOOTER
   ============================================================ */
.site-footer{
  margin-top:clamp(48px,7vw,96px);
  background:var(--bg-deep);
  border-top:1px solid var(--line);
}
.footer-scale{
  display:flex;align-items:flex-end;justify-content:space-between;gap:12px;
  padding:16px var(--pad-x);
  border-bottom:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(16,27,58,.42),rgba(7,9,13,0));
}
.footer-scale__item{display:flex;flex-direction:column;align-items:center;gap:7px}
.footer-scale__tick{display:block;width:1px;height:13px;background:rgba(138,147,166,.55)}
.footer-scale__tick--hot{width:2px;height:22px;background:var(--lime)}
.footer-scale__label{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;color:var(--ink-mute)}

.footer__inner{padding:clamp(34px,4.6vw,58px) var(--pad-x) clamp(22px,3vw,34px)}
.footer__grid{display:grid;gap:clamp(26px,3.4vw,44px);grid-template-columns:minmax(0,1fr)}
@media (min-width:800px){
  .footer__grid{grid-template-columns:minmax(0,1.1fr) minmax(0,1.6fr)}
  .footer__card{grid-column:1/-1}
}
@media (min-width:1280px){
  .footer__grid{grid-template-columns:minmax(0,1.2fr) minmax(0,1.7fr) minmax(0,1.3fr)}
  .footer__card{grid-column:auto}
}

.footer__brand{display:flex;flex-direction:column;gap:14px}
.footer__mark{
  display:grid;place-items:center;width:44px;height:44px;
  background:var(--lime);color:var(--midnight);border-radius:2px;
  font-family:var(--font-display);font-weight:800;font-size:20px;letter-spacing:-.02em;
}
.footer__intro{font-size:14.5px;line-height:1.85;color:var(--ink-soft);max-width:40ch}
.footer__meta{
  display:flex;flex-wrap:wrap;gap:7px 14px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--ink-mute);
}
.footer__meta span{display:inline-flex;align-items:center;gap:7px}
.footer__meta span::before{content:"";width:5px;height:5px;background:var(--cyan);flex:0 0 auto}

.footer__links{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(118px,1fr));
  gap:clamp(20px,2.6vw,34px);
}
.footer__col{display:flex;flex-direction:column;gap:14px}
.footer__col-title{
  font-family:var(--font-body);font-size:11.5px;font-weight:700;
  letter-spacing:.16em;color:var(--ink-mute);
  padding-bottom:9px;border-bottom:1px solid var(--line);
}
.footer__list{display:flex;flex-direction:column;gap:9px}
.footer__link{
  position:relative;display:inline-block;
  font-size:14px;color:var(--ink-soft);
  transition:color var(--dur) var(--ease);
}
.footer__link::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;
  background:var(--lime);transition:width var(--dur) var(--ease);
}
.footer__link:hover{color:var(--lime)}
.footer__link:hover::after{width:100%}

.paper-card{
  position:relative;
  background:var(--paper);color:var(--indigo);
  border:1px solid rgba(16,27,58,.18);border-radius:2px;
  padding:28px 20px 20px;
  box-shadow:6px 6px 0 rgba(198,242,78,.16),10px 10px 0 rgba(255,154,46,.10);
}
.paper-card__tag{
  position:absolute;top:-11px;left:16px;
  padding:4px 9px;
  background:var(--midnight);color:var(--lime);
  border:1px solid var(--lime);border-radius:2px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;
}
.contact-list{display:flex;flex-direction:column;gap:11px}
.contact-list li{display:flex;gap:10px;font-size:13.5px;line-height:1.65;color:#182242}
.contact-list__k{
  flex:0 0 42px;padding-top:2px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:#5A6480;
}
.contact-list__v{font-weight:500;word-break:break-word}
.paper-card__note{
  margin-top:15px;padding-top:13px;
  border-top:1px dashed rgba(16,27,58,.28);
  font-size:12px;line-height:1.7;color:#5A6480;
}

.footer__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 22px;
  padding:16px var(--pad-x) 22px;
  border-top:1px solid var(--line-soft);
  font-size:12px;color:var(--ink-mute);
}
.footer__copy{font-size:12px}
.footer__icp{font-size:12px;letter-spacing:.06em}

/* ---------- 11. reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation:none !important;
    transition:none !important;
    scroll-behavior:auto !important;
  }
  html{scroll-behavior:auto}
}