/* =============================================================
   /assets/site.css — 华体汇体育官方中国站 · 全站共享样式
   设计语言：赛场数据夜灯 / 展览画册式留白 / 锐利直角 + 精密网格
   ============================================================= */

/* ---------- 01 设计令牌 ---------- */
:root{
  --ink:#061A16;
  --panel:#0B2B24;
  --panel-deep:#08211C;
  --line:#123A33;
  --cyan:#2FF3D2;
  --amber:#FF8A3D;
  --paper:#E8F4F0;
  --muted:#7A9A92;
  --red:#FF5A5F;
  --yellow:#F2E96B;
  --white:#FFFFFF;

  --rail-w:272px;
  --bar-h:60px;
  --gutter:clamp(18px,4vw,60px);
  --maxw:1240px;
  --ease:cubic-bezier(.22,.75,.3,1);

  --f-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-display:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --f-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono","Courier New",monospace;
}

/* ---------- 02 RESET ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video,canvas{display:block;max-width:100%;height:auto}
button{background:none;border:0;padding:0;cursor:pointer;font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
::selection{background:var(--cyan);color:#04120F}

/* ---------- 03 中文排版基座 ---------- */
body{
  min-height:100vh;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--f-body);
  font-size:clamp(15px,.35vw + 14px,17px);
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.55;
  background-image:
    linear-gradient(to right,rgba(18,58,51,.7) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(18,58,51,.7) 1px,transparent 1px);
  background-size:96px 96px;
  -webkit-mask-image:radial-gradient(120% 100% at 22% 0%,#000 0%,rgba(0,0,0,.32) 62%,transparent 100%);
          mask-image:radial-gradient(120% 100% at 22% 0%,#000 0%,rgba(0,0,0,.32) 62%,transparent 100%);
}

h1,h2,h3,h4{
  font-family:var(--f-display);
  font-weight:700;
  line-height:1.14;
  letter-spacing:-.03em;
  color:var(--white);
}
h1{font-size:clamp(2rem,5vw,4.5rem)}
h2{font-size:clamp(1.5rem,3.2vw,2.5rem)}
h3{font-size:clamp(1.15rem,2vw,1.5rem)}
strong{color:var(--white);font-weight:700}
code,kbd,samp{font-family:var(--f-mono);font-size:.92em;color:var(--cyan)}

/* ---------- 04 跳至主要内容 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  padding:11px 18px;
  background:var(--cyan);
  color:#04120F;
  font-family:var(--f-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 05 本体与页脚的内容偏移 ---------- */
#main-content{
  position:relative;
  z-index:1;
  scroll-margin-top:var(--bar-h);
}
.site-footer{
  position:relative;
  z-index:1;
}
@media (min-width:1100px){
  #main-content,
  .site-footer{margin-left:var(--rail-w)}
}

/* ---------- 06 侧边轨道 / 顶部栏 ---------- */
.rail{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  width:var(--rail-w);
  z-index:60;
  display:flex;
  flex-direction:column;
  background:linear-gradient(180deg,#0B2B24 0%,#08211C 56%,#061A16 100%);
  border-right:1px solid var(--line);
  overflow:hidden;
  transition:box-shadow .24s var(--ease);
}
.rail::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:2px;
  background:linear-gradient(90deg,var(--cyan) 0%,rgba(47,243,210,.16) 72%,transparent 100%);
}
.rail[data-scrolled]{box-shadow:0 10px 32px rgba(0,0,0,.45)}

.rail__head{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:26px 22px 20px;
  border-bottom:1px solid var(--line);
}

/* 品牌锁标 */
.brand{
  display:flex;
  align-items:center;
  gap:11px;
  min-width:0;
}
.brand__glyph{
  flex:0 0 auto;
  width:36px;
  height:36px;
  display:grid;
  place-items:center;
  color:var(--cyan);
  border:1px solid rgba(47,243,210,.42);
  background:rgba(47,243,210,.05);
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.brand__glyph svg{width:19px;height:19px}
.brand:hover .brand__glyph{border-color:var(--cyan);background:rgba(47,243,210,.12)}
.brand__body{display:flex;flex-direction:column;min-width:0}
.brand__name{
  font-family:var(--f-display);
  font-size:16px;
  font-weight:700;
  line-height:1.25;
  letter-spacing:.02em;
  color:var(--white);
  white-space:nowrap;
}
.brand__meta{
  font-family:var(--f-mono);
  font-size:10px;
  line-height:1.4;
  letter-spacing:.12em;
  color:var(--muted);
  text-transform:uppercase;
}

/* 移动端菜单按钮 */
.rail__toggle{
  display:none;
  flex:0 0 auto;
  width:44px;
  height:44px;
  place-items:center;
  border:1px solid var(--line);
  color:var(--cyan);
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.rail__toggle:hover{border-color:var(--cyan);background:rgba(47,243,210,.08)}
.rail__toggle-bars{display:grid;gap:4px;width:18px}
.rail__toggle-bars span{
  display:block;
  height:1.5px;
  background:currentColor;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.rail__toggle[aria-expanded="true"] .rail__toggle-bars span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.rail__toggle[aria-expanded="true"] .rail__toggle-bars span:nth-child(2){opacity:0}
.rail__toggle[aria-expanded="true"] .rail__toggle-bars span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* 导航容器 */
.rail__nav{
  flex:1 1 auto;
  display:flex;
  flex-direction:column;
  gap:18px;
  padding:20px 22px 26px;
  overflow-y:auto;
  overscroll-behavior:contain;
}
.nav-tag{
  font-family:var(--f-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
  text-transform:uppercase;
}

.navlist{
  display:flex;
  flex-direction:column;
  border-top:1px solid var(--line);
}
.navlist__item{position:relative}
.navlist__link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:12px;
  padding:11px 10px;
  border-bottom:1px solid var(--line);
  font-size:15px;
  color:var(--paper);
  transition:background-color .18s var(--ease),color .18s var(--ease),padding-left .18s var(--ease);
}
.navlist__link::before{
  content:"";
  position:absolute;
  left:0;
  top:14%;
  bottom:14%;
  width:2px;
  background:var(--cyan);
  opacity:0;
  transition:opacity .18s var(--ease);
}
.navlist__link:hover{background:rgba(47,243,210,.06);padding-left:16px}
.navlist__link:hover::before{opacity:.55}
.navlist__link[aria-current="page"]{
  color:var(--cyan);
  background:rgba(47,243,210,.09);
  padding-left:16px;
}
.navlist__link[aria-current="page"]::before{opacity:1}
.navlist__no{
  min-width:22px;
  font-family:var(--f-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.1em;
  font-variant-numeric:tabular-nums;
  color:var(--muted);
}
.navlist__link[aria-current="page"] .navlist__no{color:var(--amber)}
.navlist__text{min-width:0}

.rail__season{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:10px;
  padding:11px 12px;
  border:1px solid var(--line);
  border-left:2px solid var(--cyan);
  background:rgba(47,243,210,.045);
}
.rail__season-k{
  font-family:var(--f-mono);
  font-size:10.5px;
  letter-spacing:.1em;
  color:var(--muted);
}
.rail__season-v{
  font-family:var(--f-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
  color:var(--cyan);
}

.rail__actions{display:grid;gap:8px;margin-top:auto}

/* ---------- 07 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 18px;
  border:1px solid transparent;
  border-radius:0;
  font-family:var(--f-mono);
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  line-height:1.2;
  text-align:center;
  cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn--solid{background:var(--amber);border-color:var(--amber);color:#1B0B01}
.btn--solid:hover{background:#FFA463;border-color:#FFA463;color:#1B0B01}
.btn--line{background:transparent;border-color:var(--cyan);color:var(--cyan)}
.btn--line:hover{background:rgba(47,243,210,.13)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--paper)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}

/* ---------- 08 布局容器与网格 ---------- */
.shell{
  position:relative;
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:clamp(34px,5vw,80px) var(--gutter);
}

.grid{display:grid;gap:clamp(14px,1.8vw,24px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}

@media (max-width:900px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:660px){
  .grid--2,
  .grid--3{grid-template-columns:1fr}
}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
  margin-bottom:clamp(20px,3vw,38px);
}
.section-head h2{font-size:clamp(1.35rem,2.6vw,2.1rem)}

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

/* ---------- 09 正文与索引元素 ---------- */
.prose{
  max-width:65ch;
  color:var(--paper);
}
.prose p + p{margin-top:1.15em}
.prose h2{margin:2em 0 .7em;font-size:clamp(1.35rem,2.4vw,1.9rem)}
.prose h3{margin:1.6em 0 .5em;color:var(--white)}
.prose ul,.prose ol{margin:1em 0;padding-left:1.2em;list-style:disc}
.prose li + li{margin-top:.4em}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(47,243,210,.42)}
.prose a:hover{border-color:var(--cyan)}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--f-mono);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--cyan);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  display:block;
  width:22px;
  height:1px;
  background:var(--cyan);
}

.idx{
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
  color:var(--muted);
}

.tag{
  display:inline-block;
  padding:3px 9px;
  border:1px solid rgba(47,243,210,.34);
  background:rgba(47,243,210,.06);
  font-family:var(--f-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--cyan);
}
.tag--amber{
  border-color:rgba(255,138,61,.38);
  background:rgba(255,138,61,.08);
  color:var(--amber);
}

.panel{
  position:relative;
  padding:clamp(18px,2.4vw,30px);
  border:1px solid var(--line);
  background:var(--panel);
}

/* 面包屑 */
.breadcrumb{
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li + li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--paper);transition:color .16s var(--ease)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb [aria-current="page"]{color:var(--cyan)}

/* 关键数字 */
.stat{display:flex;flex-direction:column;gap:5px}
.stat__num{
  font-family:var(--f-mono);
  font-weight:700;
  font-size:clamp(2rem,5vw,3.4rem);
  line-height:1;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:var(--white);
}
.stat__num--cyan{color:var(--cyan)}
.stat__num--amber{color:var(--amber)}
.stat__key{
  font-family:var(--f-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--muted);
}

/* ---------- 10 图片容器基础（供页面阶段放置图片） ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--line);
  background:
    linear-gradient(135deg,#0B2B24 0%,#08211C 60%,#061A16 100%);
}
.media::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right,rgba(18,58,51,.9) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(18,58,51,.9) 1px,transparent 1px);
  background-size:44px 44px;
  opacity:.5;
  pointer-events:none;
}
.media img,
.media video,
.media svg{
  position:relative;
  z-index:1;
  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--3x4{aspect-ratio:3/4}
.media__cap{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:2;
  padding:10px 12px;
  background:linear-gradient(180deg,rgba(6,26,22,0),rgba(6,26,22,.92));
  font-family:var(--f-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--paper);
}

/* ---------- 11 滚动显现 + 进度条 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
  will-change:opacity,transform;
}
.js [data-reveal].is-in{opacity:1;transform:none}

.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  z-index:120;
  width:0;
  height:2px;
  background:var(--cyan);
  pointer-events:none;
}

/* ---------- 12 页脚 ---------- */
.site-footer{
  background:var(--panel-deep);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  width:min(240px,42%);
  height:2px;
  background:var(--cyan);
}
.site-footer__inner{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:clamp(38px,5vw,70px) var(--gutter) 26px;
}

.site-footer__top{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,2.1fr);
  gap:clamp(28px,4vw,64px);
  padding-bottom:clamp(26px,3.4vw,44px);
  border-bottom:1px solid var(--line);
}
@media (max-width:900px){
  .site-footer__top{grid-template-columns:1fr}
}

.site-footer__brand{display:flex;flex-direction:column;gap:10px}
.site-footer__mark{
  font-family:var(--f-display);
  font-size:clamp(1.5rem,3vw,2.1rem);
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.02em;
  color:var(--white);
}
.site-footer__tag{
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
}
.site-footer__season{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--cyan);
}
.site-footer__season::before{
  content:"";
  display:block;
  width:6px;
  height:6px;
  background:var(--amber);
}

.site-footer__cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(20px,3vw,40px);
}
@media (max-width:640px){
  .site-footer__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:400px){
  .site-footer__cols{grid-template-columns:1fr}
}

.fcol{display:flex;flex-direction:column;gap:13px}
.fcol__title{
  font-family:var(--f-mono);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--cyan);
  text-transform:uppercase;
}
.fcol__list{display:flex;flex-direction:column;gap:9px}
.fcol__link{
  display:inline-block;
  width:fit-content;
  padding-bottom:1px;
  border-bottom:1px solid transparent;
  font-size:14.5px;
  color:var(--paper);
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.fcol__link:hover{color:var(--cyan);border-color:rgba(47,243,210,.5)}

.site-footer__contact{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  gap:clamp(18px,2.6vw,36px);
  padding:clamp(24px,3vw,36px) 0;
  border-bottom:1px solid var(--line);
}
.site-footer__label{
  margin-bottom:13px;
  font-family:var(--f-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--cyan);
}
.contactlist{display:flex;flex-direction:column;gap:12px}
.contactlist__row{display:flex;flex-direction:column;gap:3px}
.contactlist__k{
  font-family:var(--f-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--muted);
}
.contactlist__v{
  font-family:var(--f-mono);
  font-size:13.5px;
  line-height:1.6;
  color:var(--paper);
  word-break:break-all;
}
.contactlist__v--amber{color:var(--amber)}
.site-footer__note{
  max-width:46ch;
  padding-left:14px;
  border-left:2px solid var(--line);
  font-size:13.5px;
  line-height:1.7;
  color:var(--muted);
  align-self:start;
}

.site-footer__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:22px;
}
.site-footer__icp,
.site-footer__copy{
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.05em;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}

/* ---------- 13 移动端 / 平板：轨道收为顶栏 + 抽屉 ---------- */
@media (max-width:1099px){
  .rail{
    position:sticky;
    top:0;
    left:auto;
    right:auto;
    bottom:auto;
    width:100%;
    height:var(--bar-h);
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:0 16px;
    border-right:0;
    border-bottom:1px solid var(--line);
    overflow:visible;
    z-index:80;
  }
  .rail__head{
    flex:1 1 auto;
    width:auto;
    padding:0;
    border-bottom:0;
  }
  .rail__toggle{display:grid}
  .rail__nav{
    position:fixed;
    top:var(--bar-h);
    left:0;
    right:0;
    bottom:0;
    width:100%;
    gap:16px;
    padding:22px 18px 30px;
    background:linear-gradient(180deg,#0B2B24 0%,#061A16 100%);
    border-top:1px solid var(--line);
    overflow-y:auto;
    overscroll-behavior:contain;
    transform:translateX(-100%);
    visibility:hidden;
    opacity:0;
    transition:transform .24s var(--ease),opacity .18s var(--ease),visibility .24s linear;
  }
  .rail[data-open] .rail__nav{
    transform:translateX(0);
    visibility:visible;
    opacity:1;
  }
  .navlist__link{padding:14px 12px;font-size:16.5px}
  .navlist__link[aria-current="page"]{padding-left:18px}
  .rail__actions{margin-top:auto}
  .brand__glyph{width:32px;height:32px}
  .brand__glyph svg{width:17px;height:17px}
  .brand__name{font-size:15px}
  .brand__meta{font-size:9.5px;letter-spacing:.1em}
}

/* ---------- 14 无障碍与动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js [data-reveal]{opacity:1;transform:none}
}