/* ===== /assets/site.css — 乐优赛事 共享外壳 ===== */

*,*::before,*::after{box-sizing:border-box}

:root{
  --night:#0A1A2A;
  --deep:#10263A;
  --pitch:#2E6F4E;
  --turf:#14392A;
  --moss:#7A8C5A;
  --stone:#8A9199;
  --silver:#C9CFD6;
  --bone:#F2EFE7;
  --clay:#B4643C;
  --amber:#F0A02A;

  --line:rgba(201,207,214,.22);
  --line-strong:rgba(201,207,214,.42);
  --rail-w:288px;
  --stage-max:1360px;
  --gutter:clamp(18px,3vw,40px);

  --f-display:"Oswald","Archivo Narrow","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --f-mono:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",Consolas,"Courier New",monospace;
  --f-sans:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --f-serif:"Source Han Serif SC","Noto Serif SC","Songti SC",Georgia,serif;

  --hard:6px 6px 0 0 rgba(0,0,0,.42);
  --ease:cubic-bezier(.2,.7,.2,1);
}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:var(--night);
  color:var(--bone);
  font-family:var(--f-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  text-rendering:optimizeLegibility;
}

img,svg{max-width:100%;height:auto;display:block}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}

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

::selection{background:var(--pitch);color:var(--bone)}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:0;left:0;
  z-index:200;
  transform:translateY(-120%);
  padding:12px 20px;
  background:var(--bone);
  color:var(--night);
  font-family:var(--f-mono);
  font-size:13px;
  letter-spacing:.06em;
  border:2px solid var(--night);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 页面外壳 ---------- */
.site-head{position:relative}

.side-rail{
  display:none;
}

.rail-topbar{
  display:flex;
  align-items:baseline;
  gap:16px;
  padding:16px var(--gutter);
  border-bottom:2px solid var(--line-strong);
  background:var(--night);
}
.rail-topbar__brand{
  font-family:var(--f-display);
  font-weight:900;
  font-size:20px;
  letter-spacing:-.01em;
}
.rail-topbar__stamp{
  font-family:var(--f-mono);
  font-size:11px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--stone);
}

/* ---------- 移动端唤起按钮 ---------- */
.nav-toggle{
  position:fixed;
  right:16px;bottom:16px;
  z-index:120;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 18px;
  background:var(--pitch);
  color:var(--bone);
  border:2px solid var(--bone);
  box-shadow:var(--hard);
  font-family:var(--f-mono);
  font-size:13px;
  letter-spacing:.12em;
  text-transform:uppercase;
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  display:block;
  width:16px;height:2px;
  background:currentColor;
}
.nav-toggle__bars{position:relative}
.nav-toggle__bars::before{content:"";position:absolute;top:-5px;left:0}
.nav-toggle__bars::after{content:"";position:absolute;top:5px;left:0}
.nav-toggle[data-open="true"]{
  background:var(--amber);
  color:var(--night);
  border-color:var(--night);
}

/* ---------- 遮罩 / 抽屉 ---------- */
.nav-scrim{
  position:fixed;
  inset:0;
  z-index:130;
  background:rgba(10,26,42,.88);
}
.nav-scrim[hidden]{display:none}

.drawer{
  position:fixed;
  z-index:140;
  right:0;bottom:0;
  width:min(420px,92vw);
  max-height:86vh;
  overflow-y:auto;
  background:var(--deep);
  border-top:2px solid var(--silver);
  border-left:2px solid var(--silver);
  padding:18px 18px 28px;
  transform:translateY(101%);
  transition:transform .24s var(--ease);
}
.drawer[data-open="true"]{transform:translateY(0)}
.drawer[hidden]{display:none}

.drawer__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line-strong);
}
.drawer__title{
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--silver);
}
.drawer__close{
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--amber);
  border-bottom:1px solid currentColor;
}

.drawer__nav ul{margin-top:6px}
.drawer__nav a{
  display:flex;
  align-items:baseline;
  gap:12px;
  padding:13px 4px;
  border-bottom:1px solid var(--line);
  font-size:16px;
}
.drawer__nav a[aria-current="page"]{
  color:var(--amber);
  border-bottom-color:var(--amber);
}
.drawer__index{
  font-family:var(--f-mono);
  font-size:12px;
  color:var(--stone);
  min-width:24px;
}
.drawer__nav a[aria-current="page"] .drawer__index{color:var(--amber)}

.drawer__foot{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:20px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 20px;
  border:2px solid var(--silver);
  font-family:var(--f-mono);
  font-size:13px;
  font-weight:500;
  letter-spacing:.06em;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn--primary{
  background:var(--pitch);
  color:var(--bone);
  border-color:var(--bone);
  box-shadow:var(--hard);
}
.btn--primary:hover{background:#37805b}
.btn--ghost{
  background:transparent;
  color:var(--silver);
}
.btn--ghost:hover{border-color:var(--bone);color:var(--bone)}
.btn--tiny{
  padding:7px 12px;
  font-size:11px;
  letter-spacing:.1em;
}
.btn:active{transform:translateY(1px)}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--stone);
  padding:14px 0;
}
.crumbs__item{color:var(--silver)}
.crumbs__item[aria-current="page"]{color:var(--bone)}
.crumbs__sep{color:var(--clay)}

/* ---------- 内容航道 / 栅格 ---------- */
.content-stage{
  width:100%;
  max-width:var(--stage-max);
  margin:0 auto;
  padding:0 var(--gutter);
}
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:clamp(14px,1.6vw,24px);
}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-12{grid-column:span 12}

/* ---------- 正文容器 ---------- */
.prose{
  max-width:74ch;
  font-size:17px;
  line-height:1.8;
}
.prose p+p{margin-top:1.15em}
.prose--serif{font-family:var(--f-serif)}
.prose--legal{
  max-width:68ch;
  font-family:var(--f-serif);
  font-size:16px;
}
.prose h2{
  font-family:var(--f-display);
  font-weight:200;
  font-size:clamp(26px,3vw,40px);
  line-height:1.06;
  letter-spacing:-.02em;
  margin:2.2em 0 .6em;
}
.prose h3{
  font-family:var(--f-mono);
  font-weight:700;
  font-size:15px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--silver);
  margin:2em 0 .5em;
}

/* ---------- 数据锚点 / 标签 / 标注 ---------- */
.anchor-num{
  display:block;
  font-family:var(--f-mono);
  font-weight:700;
  font-size:clamp(40px,6vw,72px);
  line-height:1;
  letter-spacing:-.04em;
  color:var(--silver);
  font-variant-numeric:tabular-nums;
}
.anchor-num--amber{color:var(--amber)}
.anchor-num--pitch{color:var(--moss)}

.tag{
  display:inline-block;
  padding:3px 9px;
  border:1px solid var(--line-strong);
  font-family:var(--f-mono);
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--silver);
}
.tag--moss{background:var(--moss);color:var(--night);border-color:var(--moss)}
.tag--clay{background:var(--clay);color:var(--bone);border-color:var(--clay)}
.tag--amber{background:var(--amber);color:var(--night);border-color:var(--amber)}

.stamp{
  display:block;
  font-family:var(--f-mono);
  font-style:italic;
  font-size:12px;
  line-height:1.6;
  color:var(--stone);
}

/* ---------- 浮层 / 折叠组 / 筛选 ---------- */
.panel{
  border:2px solid var(--line-strong);
  background:transparent;
  padding:clamp(16px,2vw,26px);
}
.panel--deep{
  background:var(--deep);
  border-color:var(--silver);
  box-shadow:var(--hard);
}

.fold{border-top:1px solid var(--line)}
.fold:last-of-type{border-bottom:1px solid var(--line)}
.fold__head{
  width:100%;
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  padding:16px 0;
}
.fold__title{
  font-family:var(--f-mono);
  font-size:14px;
  letter-spacing:.06em;
  color:var(--silver);
}
.fold__arrow{
  font-family:var(--f-mono);
  color:var(--clay);
  transition:transform .2s var(--ease);
}
.fold.is-open .fold__arrow{transform:rotate(45deg)}
.fold__summary{
  font-family:var(--f-mono);
  font-style:italic;
  font-size:12px;
  color:var(--stone);
  padding-bottom:10px;
}
.fold__body{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .2s var(--ease);
}
.fold.is-open .fold__body{grid-template-rows:1fr}
.fold__body > div{overflow:hidden}
.fold__body p{
  font-size:15px;
  line-height:1.75;
  color:var(--silver);
  padding:0 0 18px;
}

.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  padding:7px 13px;
  border:1px solid var(--line-strong);
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--silver);
  transition:background-color .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease);
}
.chip:hover{border-color:var(--bone)}
.chip[aria-pressed="true"]{
  background:var(--pitch);
  border-color:var(--silver);
  color:var(--bone);
}

/* ---------- 图片占位容器 ---------- */
.media-frame{
  position:relative;
  width:100%;
  aspect-ratio:4/3;
  overflow:hidden;
  background:
    repeating-linear-gradient(90deg,rgba(201,207,214,.08) 0 1px,transparent 1px 42px),
    linear-gradient(160deg,var(--deep),var(--night));
  border:2px solid var(--line-strong);
}
.media-frame > img,
.media-frame > video{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame:not(:has(img)):not(:has(video))::after{
  content:"赛场影像占位";
  position:absolute;
  left:14px;bottom:12px;
  font-family:var(--f-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--stone);
}
.media-frame__caption{
  margin-top:10px;
  font-family:var(--f-mono);
  font-style:italic;
  font-size:12px;
  color:var(--stone);
}

/* ---------- 显现 / 返回顶部 / 进度 ---------- */
.reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .32s var(--ease),transform .32s var(--ease);
}
.reveal.is-visible{opacity:1;transform:none}

.to-top{
  position:fixed;
  right:16px;
  bottom:78px;
  z-index:110;
  width:44px;height:44px;
  display:none;
  place-items:center;
  background:var(--deep);
  border:2px solid var(--silver);
  color:var(--silver);
  font-family:var(--f-mono);
  font-size:14px;
}
.to-top.is-visible{display:grid}

.progress-rail{
  position:fixed;
  top:0;left:0;
  z-index:150;
  height:3px;width:0;
  background:var(--amber);
}

/* ---------- 页脚 ---------- */
.site-foot{
  margin-top:clamp(48px,7vw,96px);
  background:var(--night);
  border-top:2px solid var(--silver);
}
.foot-texture{
  height:14px;
  background:
    repeating-linear-gradient(90deg,
      var(--pitch) 0 6px,
      var(--night) 6px 14px,
      var(--clay) 14px 20px,
      var(--night) 20px 46px,
      var(--moss) 46px 52px,
      var(--night) 52px 92px);
  opacity:.7;
}
.foot-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(24px,3vw,40px);
  max-width:var(--stage-max);
  margin:0 auto;
  padding:clamp(30px,4vw,56px) var(--gutter);
}
.foot-mark{
  display:block;
  font-family:var(--f-display);
  font-weight:900;
  font-size:26px;
  letter-spacing:-.02em;
  margin-bottom:10px;
}
.foot-brand__line{
  font-size:15px;
  line-height:1.75;
  color:var(--silver);
  max-width:34ch;
}
.foot-brand__line--dim{
  margin-top:10px;
  font-family:var(--f-mono);
  font-style:italic;
  font-size:12px;
  color:var(--stone);
}
.foot-col__title{
  font-family:var(--f-mono);
  font-weight:700;
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--moss);
  padding-bottom:10px;
  margin-bottom:12px;
  border-bottom:1px solid var(--line-strong);
}
.foot-list li+li{margin-top:9px}
.foot-link{
  font-size:15px;
  color:var(--silver);
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.foot-link:hover{color:var(--bone);border-bottom-color:var(--bone)}
.foot-contact{margin-top:20px}
.foot-contact__row{
  font-family:var(--f-mono);
  font-size:13px;
  color:var(--silver);
}
.foot-contact__row + .foot-contact__row{margin-top:6px}
.foot-contact__row--addr{color:var(--stone)}
.foot-contact__row a:hover{color:var(--amber)}
.foot-contact__note{
  margin-top:12px;
  font-family:var(--f-mono);
  font-style:italic;
  font-size:12px;
  line-height:1.6;
  color:var(--stone);
  max-width:36ch;
}
.foot-legal{
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  align-items:baseline;
  max-width:var(--stage-max);
  margin:0 auto;
  padding:18px var(--gutter) 34px;
  border-top:1px solid var(--line);
  font-family:var(--f-mono);
  font-size:12px;
  color:var(--stone);
}
.foot-legal__icp{color:var(--silver)}
.foot-legal__review{max-width:70ch;line-height:1.7}

/* ---------- 平板 ---------- */
@media (min-width:760px){
  .foot-grid{grid-template-columns:1.3fr 1fr 1fr 1.4fr}
  .to-top{bottom:22px}
}

/* ---------- 桌面：侧轨 + 内容 ---------- */
@media (min-width:1080px){
  body{
    background:
      linear-gradient(90deg,var(--turf) 0 var(--rail-w),var(--night) var(--rail-w) 100%);
  }
  .rail-topbar,.nav-toggle,.drawer,.nav-scrim{display:none}
  .side-rail{
    display:flex;
    flex-direction:column;
    gap:24px;
    position:fixed;
    top:0;left:0;bottom:0;
    width:var(--rail-w);
    padding:28px 26px 26px;
    background:var(--turf);
    border-right:2px solid var(--silver);
    overflow-y:auto;
  }
  .rail-brand{display:block;padding-bottom:18px;border-bottom:2px solid var(--line-strong)}
  .rail-brand__mark{
    display:block;
    font-family:var(--f-display);
    font-weight:900;
    font-size:26px;
    letter-spacing:-.02em;
    line-height:1.1;
  }
  .rail-brand__sub{
    display:block;
    margin-top:6px;
    font-family:var(--f-mono);
    font-size:11px;
    letter-spacing:.18em;
    text-transform:uppercase;
    color:var(--silver);
  }
  .rail-nav__item + .rail-nav__item{margin-top:2px}
  .rail-nav__item a{
    display:grid;
    grid-template-columns:28px 1fr;
    gap:0 8px;
    padding:11px 8px 11px 4px;
    border-left:3px solid transparent;
    transition:background-color .16s var(--ease),border-color .16s var(--ease);
  }
  .rail-nav__item a:hover{background:rgba(201,207,214,.08);border-left-color:var(--stone)}
  .rail-nav__item a[aria-current="page"]{
    background:var(--pitch);
    border-left-color:var(--silver);
  }
  .rail-nav__index{
    font-family:var(--f-mono);
    font-size:11px;
    color:var(--stone);
    padding-top:4px;
  }
  .rail-nav__item a[aria-current="page"] .rail-nav__index{color:var(--bone)}
  .rail-nav__label{
    font-family:var(--f-display);
    font-weight:200;
    font-size:20px;
    line-height:1.2;
    letter-spacing:-.01em;
  }
  .rail-nav__item a[aria-current="page"] .rail-nav__label{font-weight:900}
  .rail-nav__meta{
    grid-column:2;
    display:block;
    font-family:var(--f-mono);
    font-style:italic;
    font-size:11px;
    line-height:1.5;
    color:var(--stone);
  }
  .rail-nav__item a[aria-current="page"] .rail-nav__meta{color:var(--bone)}

  .season-rail{border-top:1px solid var(--line);padding-top:14px}
  .season-rail__cap{
    display:block;
    font-family:var(--f-mono);
    font-size:11px;
    letter-spacing:.16em;
    text-transform:uppercase;
    color:var(--stone);
    margin-bottom:10px;
  }
  .season-rail__track{
    display:flex;
    gap:8px;
    overflow-x:auto;
    padding-bottom:6px;
    scrollbar-width:thin;
    cursor:grab;
  }
  .season-rail__track:active{cursor:grabbing}
  .season-rail__node{
    flex:0 0 auto;
    padding:6px 10px;
    border:1px solid var(--line-strong);
    font-family:var(--f-mono);
    font-size:12px;
    color:var(--silver);
  }
  .season-rail__node.is-live{
    background:var(--pitch);
    border-color:var(--bone);
    color:var(--bone);
  }

  .rail-utility{
    display:flex;
    flex-direction:column;
    gap:8px;
    border-top:1px solid var(--line);
    padding-top:14px;
  }
  .rail-utility__item{
    font-family:var(--f-mono);
    font-size:12px;
    color:var(--silver);
    border-bottom:1px solid transparent;
  }
  .rail-utility__item:hover{color:var(--bone);border-bottom-color:var(--bone)}
  .rail-cta{margin-top:auto;width:100%}

  .page-body{padding-left:var(--rail-w)}
  .progress-rail{left:var(--rail-w)}
}

@media (min-width:1280px){
  :root{--rail-w:312px}
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
  .fold__body{transition:none}
  .drawer{transition:none}
  .season-rail__track{scroll-behavior:auto}
}