/* ============================================================
   亿动体育 · 共享 Site Kit
   路径：/assets/site.css
   01 变量 · 02 重置 · 03 基础排版 · 04 布局 · 05 页头
   06 页脚 · 07 组件 · 08 动效与响应式
   ============================================================ */

/* ---------- 01 变量 ---------- */
:root{
  --night-green:#07130E;
  --stand-green:#0E241B;
  --fluoro:#E6FF3B;
  --data-blue:#4D9BFF;
  --board-orange:#FF5B2E;
  --paper:#F2F5EF;
  --ink:#05080A;
  --line:#5E7268;
  --muted:#98A8A0;
  --warm:#FFEFC2;

  --line-soft:rgba(94,114,104,.36);
  --line-hard:rgba(94,114,104,.72);
  --fluoro-ghost:rgba(230,255,59,.08);

  --font-display:"Arial Narrow","Helvetica Neue",Arial,"PingFang SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --font-body:"PingFang SC","Source Han Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --shell:1280px;
  --gutter:clamp(16px,4vw,56px);
  --header-h:44px;
  --step:120ms;
}

/* ---------- 02 重置 ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;min-height:100%;}
h1,h2,h3,h4,h5,h6,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{font:inherit;color:inherit;background:none;border:0;border-radius:0;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;width:100%;}
[hidden]{display:none !important;}

/* ---------- 03 基础排版 ---------- */
body{
  background:var(--night-green);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
@media (min-width:1024px){body{font-size:17px;}}

::selection{background:var(--fluoro);color:var(--ink);}

:focus-visible{outline:2px solid var(--fluoro);outline-offset:3px;}

.display{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(38px,7vw,96px);
  line-height:.96;
  letter-spacing:-.02em;
  color:var(--paper);
}
.display em{font-style:normal;color:var(--fluoro);}

.lede{
  font-size:clamp(16px,1.6vw,19px);
  line-height:1.8;
  color:var(--muted);
  max-width:34em;
}

.prose{max-width:34em;color:var(--paper);}
.prose p{margin-bottom:1.15em;}
.prose ul,.prose ol{list-style:disc;padding-left:1.3em;margin-bottom:1.15em;}
.prose ol{list-style:decimal;}
.prose li{margin-bottom:.4em;}
.prose strong{font-weight:700;color:var(--fluoro);}
.prose a{border-bottom:1px solid var(--line-hard);}
.prose a:hover{color:var(--fluoro);border-bottom-color:var(--fluoro);}

.chapter-no{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.3em;
  color:var(--fluoro);
  font-variant-numeric:tabular-nums;
}
.chapter-no::after{content:"";width:clamp(24px,6vw,72px);height:1px;background:var(--line-hard);}

.eyebrow{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.24em;
  color:var(--muted);
  text-transform:uppercase;
}

.note{
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.9;
  letter-spacing:.06em;
  color:var(--muted);
  border-left:1px solid var(--line-soft);
  padding-left:14px;
}

.rule{height:1px;background:var(--line-soft);border:0;margin:0;}

.stat{display:flex;flex-direction:column;gap:4px;border-top:1px solid var(--line-soft);padding-top:12px;}
.stat__value{
  font-family:var(--font-mono);
  font-size:clamp(24px,3vw,34px);
  line-height:1.1;
  color:var(--fluoro);
  font-variant-numeric:tabular-nums;
}
.stat__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--muted);}

/* ---------- 04 布局 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.site-main{display:block;}

.section{padding:clamp(48px,8vw,110px) 0;}
.section--alt{background:var(--stand-green);}
.section--ink{background:var(--ink);}
.section--paper{background:var(--paper);color:var(--ink);}
.section--paper .display,.section--paper .prose{color:var(--ink);}
.section--paper .lede,.section--paper .eyebrow,.section--paper .note{color:#3D5148;}
.section__head{max-width:34em;margin-bottom:clamp(24px,4vw,48px);}
.section__head .display{margin-top:14px;}

.grid{display:grid;gap:clamp(20px,3.2vw,48px);}
.grid--split{grid-template-columns:minmax(0,1fr);}
.grid--split-rev{grid-template-columns:minmax(0,1fr);}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));}
@media (min-width:900px){
  .grid--split{grid-template-columns:minmax(0,7fr) minmax(0,3fr);}
  .grid--split-rev{grid-template-columns:minmax(0,3fr) minmax(0,7fr);}
}

.slant{clip-path:polygon(0 0,100% 2.2vw,100% 100%,0 calc(100% - 2.2vw));}

/* ---------- 05 页头 ---------- */
.skip-link{
  position:absolute;
  left:-9999px;
  top:0;
  z-index:200;
  background:var(--fluoro);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.14em;
  padding:10px 18px;
}
.skip-link:focus{left:8px;top:8px;}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  grid-template-areas:
    ". brand actions"
    "nav nav nav";
  align-items:center;
  column-gap:clamp(12px,2vw,28px);
  row-gap:clamp(10px,1.6vw,18px);
  padding:clamp(16px,2.6vw,30px) var(--gutter) clamp(12px,1.8vw,20px);
  background:var(--night-green);
  border-bottom:1px solid var(--line-soft);
  transition:padding .22s linear,row-gap .22s linear,background-color .22s linear;
}

.scroll-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  width:0;
  height:2px;
  background:var(--fluoro);
  pointer-events:none;
}

.brand-mark{
  grid-area:brand;
  justify-self:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:7px;
  color:var(--paper);
}
.brand-mark__cn{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(26px,3.6vw,42px);
  line-height:1;
  letter-spacing:.08em;
  color:var(--paper);
}
.brand-mark__cn::after{
  content:"";
  display:inline-block;
  width:.2em;
  height:.2em;
  margin-left:.3em;
  background:var(--fluoro);
  vertical-align:.1em;
}
.brand-mark__short{
  display:none;
  font-family:var(--font-display);
  font-weight:900;
  font-size:17px;
  letter-spacing:.14em;
  color:var(--paper);
}
.brand-mark__tag{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.26em;
  color:var(--fluoro);
}

.site-nav{grid-area:nav;min-width:0;}
.site-nav__list{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:center;
  gap:clamp(14px,2.6vw,40px);
}
.site-nav__list a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  letter-spacing:.1em;
  color:var(--muted);
  transition:color var(--step) linear;
}
.site-nav__list a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:var(--fluoro);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--step) linear;
}
.site-nav__list a:hover{color:var(--paper);}
.site-nav__list a:hover::after{transform:scaleX(1);}
.site-nav__list a[aria-current="page"]{color:var(--fluoro);}
.site-nav__list a[aria-current="page"]::after{transform:scaleX(1);}

.header-actions{
  grid-area:actions;
  justify-self:end;
  display:flex;
  align-items:center;
  gap:10px;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  min-height:40px;
  padding:8px 12px;
  border:1px solid var(--line-soft);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  cursor:pointer;
  transition:border-color var(--step) linear,color var(--step) linear;
}
.nav-toggle:hover{border-color:var(--fluoro);color:var(--fluoro);}
.nav-toggle__bars{
  width:16px;
  height:2px;
  background:currentColor;
  box-shadow:0 -5px 0 currentColor,0 5px 0 currentColor;
}
.nav-toggle__text{line-height:1;}

.site-header[data-collapsed="true"]{
  grid-template-columns:auto minmax(0,1fr) auto;
  grid-template-areas:"brand nav actions";
  row-gap:0;
  min-height:var(--header-h);
  padding:0 var(--gutter);
  background:rgba(7,19,14,.95);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom-color:var(--line-hard);
}
.site-header[data-collapsed="true"] .brand-mark{
  justify-self:start;
  flex-direction:row;
  align-items:center;
  gap:0;
}
.site-header[data-collapsed="true"] .brand-mark__cn{display:none;}
.site-header[data-collapsed="true"] .brand-mark__short{display:inline;}
.site-header[data-collapsed="true"] .brand-mark__tag{display:none;}
.site-header[data-collapsed="true"] .site-nav__list{gap:clamp(12px,2vw,26px);}
.site-header[data-collapsed="true"] .site-nav__list a{font-size:13px;letter-spacing:.08em;padding:4px 0;}

/* ---------- 06 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:var(--paper);
  border-top:2px solid var(--fluoro);
  margin-top:clamp(56px,9vw,128px);
}
.footer-band{border-bottom:1px solid var(--line-soft);}
.footer-band:last-child{border-bottom:0;}
.footer-band--quick{background:var(--stand-green);padding:clamp(28px,4vw,48px) 0;}
.footer-band--nav{padding:clamp(28px,4vw,52px) 0;}
.footer-band--contact{padding:clamp(24px,3vw,40px) 0;background:#04070B;}
.footer-band--legal{padding:clamp(16px,2vw,24px) 0;background:#04070B;}

.footer-title{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.28em;
  color:var(--fluoro);
  margin-bottom:18px;
}

.footer-routes{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
  gap:1px;
  background:var(--line-soft);
  border:1px solid var(--line-soft);
}
.footer-routes li{
  display:flex;
  align-items:baseline;
  gap:10px;
  background:var(--stand-green);
  padding:16px 18px;
}
.footer-routes__no{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--fluoro);
  font-variant-numeric:tabular-nums;
}
.footer-routes a{
  font-size:15px;
  letter-spacing:.04em;
  color:var(--paper);
  border-bottom:1px solid transparent;
  transition:color var(--step) linear,border-color var(--step) linear;
}
.footer-routes a:hover{color:var(--fluoro);border-bottom-color:var(--fluoro);}

.footer-nav{display:grid;grid-template-columns:minmax(0,1fr);gap:clamp(24px,4vw,56px);}
@media (min-width:768px){
  .footer-nav{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr);}
}
.footer-nav__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  color:var(--muted);
  margin-bottom:14px;
}
.footer-nav__col ul{display:flex;flex-direction:column;gap:10px;}
.footer-nav__col a{
  font-size:15px;
  color:var(--paper);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
  transition:color var(--step) linear,border-color var(--step) linear;
}
.footer-nav__col a:hover{color:var(--fluoro);border-bottom-color:var(--fluoro);}
.footer-brand{
  display:inline-block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(26px,3vw,34px);
  line-height:1.1;
  letter-spacing:.1em;
  color:var(--paper);
}
.footer-slogan{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.26em;
  color:var(--fluoro);
}

.footer-contact{display:grid;grid-template-columns:minmax(0,1fr);gap:18px;}
@media (min-width:900px){
  .footer-contact{
    grid-template-columns:auto minmax(0,1fr) minmax(0,1fr);
    align-items:start;
    gap:clamp(24px,4vw,56px);
  }
}
.footer-contact__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  color:var(--muted);
}
.footer-contact__list{display:grid;gap:10px;}
.footer-contact__list li{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;}
.footer-contact__k{
  min-width:66px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--data-blue);
}
.footer-contact__v{
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--paper);
  font-variant-numeric:tabular-nums;
}
.footer-contact__note{font-size:13px;line-height:1.75;color:var(--muted);}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 28px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
}
.footer-legal__icp{color:var(--muted);}
.footer-legal__code{color:var(--fluoro);}
.footer-legal__year{color:var(--line);}

/* ---------- 07 组件 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:42px;
  padding:11px 18px;
  border:1px solid transparent;
  border-radius:0;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.12em;
  cursor:pointer;
  transition:background-color var(--step) linear,color var(--step) linear,border-color var(--step) linear;
}
.btn--primary{background:var(--fluoro);color:var(--ink);border-color:var(--fluoro);}
.btn--primary:hover{background:var(--warm);border-color:var(--warm);color:var(--ink);}
.btn--ghost{background:transparent;color:var(--paper);border-color:var(--line-soft);}
.btn--ghost:hover{border-color:var(--fluoro);color:var(--fluoro);}

.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:clamp(16px,2.4vw,28px);}
.chip{
  display:inline-flex;
  align-items:center;
  min-height:38px;
  padding:8px 14px;
  border:1px solid var(--line-soft);
  border-radius:0;
  background:transparent;
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  cursor:pointer;
  transition:background-color var(--step) linear,color var(--step) linear,border-color var(--step) linear;
}
.chip:hover{color:var(--paper);border-color:var(--line-hard);}
.chip[aria-pressed="true"]{background:var(--fluoro);color:var(--ink);border-color:var(--fluoro);}

.card{
  position:relative;
  background:var(--stand-green);
  border:1px solid var(--line-soft);
  border-radius:0;
  padding:clamp(18px,2.4vw,28px);
}
.card--focus{border-left:3px solid var(--fluoro);}

.data-table{width:100%;font-size:15px;}
.data-table caption{
  caption-side:top;
  text-align:left;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--muted);
  padding-bottom:10px;
}
.data-table th{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.16em;
  text-align:left;
  color:var(--data-blue);
  padding:10px 12px;
  border-bottom:1px solid var(--line-hard);
}
.data-table td{
  padding:12px;
  border-bottom:1px solid var(--line-soft);
  color:var(--paper);
  font-variant-numeric:tabular-nums;
}
.data-table .num{font-family:var(--font-mono);text-align:right;font-variant-numeric:tabular-nums;}
.data-table tbody tr:hover{background:var(--fluoro-ghost);}

.breadcrumb{
  padding-top:clamp(16px,2vw,26px);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--muted);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--line);}
.breadcrumb a{color:var(--muted);border-bottom:1px solid transparent;}
.breadcrumb a:hover{color:var(--fluoro);border-bottom-color:var(--fluoro);}
.breadcrumb [aria-current="page"]{color:var(--paper);}

.media{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line-soft);
  border-radius:0;
  background:var(--stand-green);
}
.media img{width:100%;height:100%;object-fit:cover;}
.media--16x9{aspect-ratio:16/9;}
.media--4x3{aspect-ratio:4/3;}
.media--1x1{aspect-ratio:1/1;}
.media--21x9{aspect-ratio:21/9;}
.media__caption{
  padding-top:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
}

/* ---------- 08 动效与响应式 ---------- */
.reveal-ready [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .32s linear,transform .32s linear;
}
.reveal-ready [data-reveal].is-visible{opacity:1;transform:none;}

@media (max-width:900px){
  .site-header{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:0;
    padding:14px var(--gutter);
  }
  .brand-mark{justify-self:flex-start;align-items:flex-start;flex:1 1 auto;min-width:0;}
  .brand-mark__tag{letter-spacing:.18em;}
  .header-actions{order:2;}
  .nav-toggle{display:inline-flex;}
  .site-nav{
    order:3;
    flex:1 1 100%;
    display:none;
    margin-top:14px;
    padding-top:6px;
    border-top:1px solid var(--line-soft);
  }
  .site-nav[data-open="true"]{display:block;}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0;}
  .site-nav__list a{
    display:block;
    padding:13px 0;
    font-size:16px;
    border-bottom:1px solid var(--line-soft);
  }
  .site-nav__list a::after{display:none;}
  .site-nav__list a[aria-current="page"]{padding-left:12px;box-shadow:inset 3px 0 0 var(--fluoro);}
  .site-header[data-collapsed="true"]{
    padding:10px var(--gutter);
    min-height:0;
  }
  .site-header[data-collapsed="true"] .site-nav__list a{font-size:15px;padding:11px 0;}
  .site-header[data-collapsed="true"] .nav-toggle{display:inline-flex;}
  .footer-routes{grid-template-columns:minmax(0,1fr);}
  .footer-legal{justify-content:flex-start;}
}

@media (max-width:520px){
  .brand-mark__cn{font-size:24px;}
  .brand-mark__tag{font-size:10px;}
  .header-cta{padding:10px 13px;font-size:12px;letter-spacing:.08em;}
  .nav-toggle{padding:8px 10px;font-size:11px;letter-spacing:.1em;}
}

@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-ready [data-reveal]{opacity:1 !important;transform:none !important;}
}