/* ============================================================
   LEYU体育 · 共享样式 /assets/site.css
   场馆墨绿底 + 炭黑命令栏 + 深苔绿索引轨道 + 红黄状态强调
   ============================================================ */

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--bar-h) + 16px);
}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0;padding:0;}
ul,ol{list-style:none;}
img,svg,video{display:block;max-width:100%;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--warn);outline-offset:2px;border-radius:2px;}
::selection{background:var(--teal);color:var(--chalk);}

/* ---------- 变量 ---------- */
:root{
  --venue:#0E2A24;
  --moss:#123A31;
  --coal:#1A211D;
  --rock:#3F4B45;
  --stone:#7E8B84;
  --ivory:#EDE9DF;
  --chalk:#F6F3EC;
  --red:#C8342B;
  --warn:#E3A61C;
  --teal:#2F8A72;
  --line:rgba(63,75,69,.95);
  --line-soft:rgba(63,75,69,.55);

  --rail-w:248px;
  --bar-h:56px;

  --mono:ui-monospace,"JetBrains Mono","Roboto Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;

  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow:0 6px 18px rgba(0,0,0,.34);
}

/* ---------- 基础排版 ---------- */
body{
  background:var(--venue);
  color:var(--ivory);
  font-family:var(--sans);
  font-size:16.5px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.005em;
  padding-top:var(--bar-h);
  min-height:100vh;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-weight:700;line-height:1.28;letter-spacing:-.02em;}
h1{font-size:clamp(26px,3.6vw,40px);}
h2{font-size:clamp(22px,2.6vw,32px);}
h3{font-size:clamp(17px,1.6vw,20px);}
p{max-width:78ch;}

.num,.stat__value,.cmd-status__time,.copy-value{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}

#main-content{display:block;}
main{display:block;}

/* ---------- 布局容器 ---------- */
.container{
  width:100%;
  max-width:1120px;
  margin-inline:auto;
  padding-inline:clamp(18px,4vw,56px);
}
.grid{display:grid;gap:clamp(16px,2.4vw,32px);}
.grid--2{grid-template-columns:1fr;}
.grid--3{grid-template-columns:1fr;}
.grid--4{grid-template-columns:1fr 1fr;}
.hairline{height:1px;border:0;background:var(--line);}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;
  top:-64px;left:12px;
  z-index:200;
  padding:10px 16px;
  background:var(--warn);
  color:var(--coal);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  border-radius:2px;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:10px;}

/* ============================================================
   页头
   ============================================================ */
.site-header{position:relative;z-index:80;}

.command-bar{
  position:fixed;
  top:0;left:0;right:0;
  height:var(--bar-h);
  z-index:80;
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,28px);
  padding:0 clamp(14px,2.4vw,28px);
  background:var(--coal);
  border-bottom:1px solid var(--line);
}

/* 品牌 */
.brand{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:2px;
  flex:0 0 auto;
  line-height:1.1;
}
.brand__mark{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:16px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ivory);
}
.brand__mark::before{
  content:"";
  width:9px;height:18px;
  flex:0 0 auto;
  background:linear-gradient(180deg,var(--red) 0 50%,var(--warn) 50% 100%);
}
.brand__sub{
  font-size:10.5px;
  letter-spacing:.18em;
  color:var(--stone);
  padding-left:17px;
}

/* 状态 */
.cmd-status{
  display:flex;
  align-items:center;
  gap:8px;
  min-width:0;
  flex:0 1 auto;
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--stone);
}
.cmd-status__dot{
  width:6px;height:6px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--warn);
  animation:pulse 2.4s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(227,166,28,.45);}
  70%{box-shadow:0 0 0 7px rgba(227,166,28,0);}
  100%{box-shadow:0 0 0 0 rgba(227,166,28,0);}
}
.cmd-status__time{font-size:14px;color:var(--ivory);letter-spacing:0;}

/* 动作区 */
.cmd-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
}
.cmd-link{
  font-size:12px;
  letter-spacing:.08em;
  color:var(--stone);
  padding:6px 2px;
  border-bottom:1px solid transparent;
  transition:color .18s linear,border-color .18s linear;
}
.cmd-link:hover{color:var(--teal);border-bottom-color:var(--teal);}

.chip-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 12px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--ivory);
  background:rgba(18,58,49,.6);
  border:1px solid var(--line);
  border-radius:2px;
  transition:background-color .18s linear,color .18s linear,border-color .18s linear;
}
.chip-btn:hover{background:var(--moss);border-color:var(--teal);color:#fff;}
.nav-toggle{display:inline-flex;}
.rail-toggle{display:none;}

/* 滚动进度 */
.progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  overflow:hidden;
  pointer-events:none;
}
.progress__bar{
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg,var(--teal),var(--warn));
  transition:transform .12s linear;
}

/* ---------- 竖向索引轨道 ---------- */
.index-rail{
  position:fixed;
  top:var(--bar-h);left:0;bottom:0;
  width:min(302px,86vw);
  z-index:70;
  display:flex;
  flex-direction:column;
  padding:26px 18px 22px;
  background:var(--moss);
  border-right:1px solid var(--line);
  overflow-y:auto;
  overscroll-behavior:contain;
  transform:translateX(-102%);
  transition:transform 260ms var(--ease);
}
.index-rail[data-open]{
  transform:translateX(0);
  box-shadow:16px 0 40px rgba(0,0,0,.5);
}
.rail__head{
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.22em;
  color:var(--stone);
  padding:0 10px 12px;
  margin-bottom:12px;
  border-bottom:1px solid var(--line-soft);
}
.rail__list{display:flex;flex-direction:column;gap:2px;}
.rail__link{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:11px 12px;
  font-size:15px;
  color:var(--stone);
  border-left:2px solid transparent;
  transition:color .18s linear,background-color .18s linear,transform .18s var(--ease),border-color .18s linear;
}
.rail__link:hover{
  color:var(--ivory);
  background:rgba(47,138,114,.12);
  border-left-color:rgba(47,138,114,.6);
  transform:translateX(4px);
}
.rail__link[aria-current="page"]{
  color:var(--ivory);
  background:rgba(47,138,114,.16);
  border-left-color:var(--teal);
}
.rail__num{
  flex:0 0 auto;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--stone);
  opacity:.75;
}
.rail__link[aria-current="page"] .rail__num{color:var(--warn);opacity:1;}
.rail__name{flex:1 1 auto;}
.rail__foot{
  margin-top:auto;
  padding:16px 12px 0;
  font-size:11px;
  line-height:1.7;
  letter-spacing:.06em;
  color:var(--stone);
  border-top:1px solid var(--line-soft);
}

/* 移动端遮罩 */
.rail-scrim{
  position:fixed;
  inset:var(--bar-h) 0 0 0;
  z-index:65;
  background:rgba(14,42,36,.68);
}
.rail-scrim[hidden]{display:none;}
@media (max-width:1179px){
  body.is-nav-open{overflow:hidden;}
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  background:var(--coal);
  border-top:1px solid var(--line);
  margin-top:clamp(48px,7vw,96px);
}
.footer__inner{
  width:100%;
  max-width:1120px;
  margin-inline:auto;
  padding:clamp(40px,5.6vw,72px) clamp(18px,4vw,56px) 0;
}
.footer__top{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:14px;
  padding-bottom:clamp(24px,3vw,36px);
  border-bottom:1px solid var(--line-soft);
}
.footer__mark{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:17px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ivory);
}
.footer__chip{
  width:9px;height:18px;
  background:linear-gradient(180deg,var(--red) 0 50%,var(--warn) 50% 100%);
}
.footer__sub{
  font-size:11px;
  letter-spacing:.18em;
  color:var(--stone);
}
.footer__grid{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(24px,3vw,40px);
  padding-block:clamp(28px,3.6vw,44px);
}
.footer__title{
  font-size:11px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--stone);
  margin-bottom:14px;
}
.footer__list{display:flex;flex-direction:column;gap:2px;}
.footer__list a{
  display:inline-block;
  padding:5px 0;
  font-size:14px;
  color:var(--ivory);
  transition:color .18s linear,transform .18s var(--ease);
}
.footer__list a:hover{color:var(--teal);transform:translateX(3px);}
.footer__list--plain li{padding:5px 0;font-size:14px;color:var(--stone);}
.footer__list--contact{gap:0;}
.copy-row{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:8px;
  padding:9px 0;
  border-bottom:1px solid var(--line-soft);
}
.copy-label{
  flex:0 0 auto;
  font-size:10.5px;
  letter-spacing:.16em;
  color:var(--stone);
}
.copy-value{font-size:13.5px;color:var(--ivory);word-break:break-all;}
.copy-btn{
  font-size:10.5px;
  letter-spacing:.14em;
  color:var(--stone);
  padding:2px 8px;
  border:1px solid var(--line);
  border-radius:2px;
  transition:color .18s linear,border-color .18s linear,background-color .18s linear;
}
.copy-btn:hover{color:var(--teal);border-color:var(--teal);background:rgba(47,138,114,.12);}
.copy-note{
  font-size:10.5px;
  letter-spacing:.1em;
  color:var(--warn);
  opacity:0;
  transition:opacity .2s linear;
}
.copy-note.is-on{opacity:1;}
.footer__note{
  margin-top:14px;
  font-size:12px;
  line-height:1.7;
  color:var(--stone);
  max-width:42ch;
}
.footer__meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  padding:20px 0 28px;
  margin-top:clamp(24px,3vw,40px);
  border-top:1px solid var(--line-soft);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--stone);
  font-family:var(--mono);
}

/* ============================================================
   通用区块组件
   ============================================================ */
.section{padding-block:clamp(52px,7.5vw,104px);position:relative;}
.section--tight{padding-block:clamp(30px,4vw,56px);}
.section--sink{background:var(--moss);}
.section + .section{border-top:1px solid var(--line-soft);}

.section__head{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-bottom:clamp(22px,3.2vw,42px);
}
.section__title{font-size:clamp(22px,2.6vw,32px);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:11px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--teal);
}
.eyebrow::before{content:"";width:18px;height:1px;background:currentColor;}
.lede{
  font-size:17px;
  line-height:1.8;
  color:rgba(237,233,223,.82);
  max-width:62ch;
}

/* 面包屑 */
.crumbs{font-size:11.5px;letter-spacing:.12em;color:var(--stone);}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumbs li{display:inline-flex;align-items:center;gap:8px;}
.crumbs li + li::before{content:"/";color:var(--rock);}
.crumbs a{color:var(--stone);transition:color .18s linear;}
.crumbs a:hover{color:var(--teal);}
.crumbs [aria-current="page"]{color:var(--ivory);}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--chalk);
  background:var(--teal);
  border:1px solid var(--teal);
  border-radius:2px;
  transition:background-color .18s linear,color .18s linear,border-color .18s linear;
}
.btn:hover{background:#37a086;border-color:#37a086;color:#fff;}
.btn--ghost{background:transparent;color:var(--ivory);border-color:var(--rock);}
.btn--ghost:hover{background:rgba(47,138,114,.14);border-color:var(--teal);color:var(--ivory);}
.btn--alert{background:var(--red);border-color:var(--red);color:#fff;}
.btn--alert:hover{background:#d9443a;border-color:#d9443a;}

/* 标签 */
.tag{
  display:inline-flex;
  align-items:center;
  gap:5px;
  padding:2px 8px;
  font-size:10.5px;
  font-weight:600;
  line-height:1.7;
  letter-spacing:.12em;
  white-space:nowrap;
  color:var(--stone);
  background:rgba(63,75,69,.18);
  border:1px solid var(--line);
  border-radius:2px;
}
.tag--red{color:#f0938c;border-color:rgba(200,52,43,.55);background:rgba(200,52,43,.14);}
.tag--yellow{color:#f2c463;border-color:rgba(227,166,28,.5);background:rgba(227,166,28,.13);}
.tag--teal{color:#7fd0b8;border-color:rgba(47,138,114,.6);background:rgba(47,138,114,.16);}
.tag--live{color:var(--coal);background:var(--warn);border-color:var(--warn);}

/* 数值 */
.stat{display:flex;flex-direction:column;gap:6px;}
.stat__value{
  font-size:clamp(34px,5.4vw,64px);
  line-height:1;
  color:var(--ivory);
}
.stat__label{font-size:11px;letter-spacing:.16em;color:var(--stone);}
.stat--alert .stat__value{color:var(--red);}
.stat--warn .stat__value{color:var(--warn);}
.stamp{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--stone);
}

/* 研究板与表格 */
.board{
  background:rgba(18,58,49,.45);
  border-top:1px solid var(--line);
  padding:clamp(18px,3vw,32px);
}
.record-table{font-size:14px;}
.record-table caption{
  text-align:left;
  font-size:11px;
  letter-spacing:.18em;
  color:var(--stone);
  padding-bottom:12px;
}
.record-table th{
  text-align:left;
  font-size:11px;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--stone);
  padding:10px 12px;
  border-bottom:1px solid var(--rock);
  white-space:nowrap;
}
.record-table td{
  padding:12px;
  border-bottom:1px solid var(--line-soft);
  color:rgba(237,233,223,.9);
  vertical-align:middle;
}
.record-table td.num,.record-table th.num{text-align:right;}
.record-table tbody tr:hover{background:rgba(47,138,114,.08);}

/* 正文长文 */
.prose{max-width:72ch;color:rgba(237,233,223,.86);}
.prose h2{font-size:22px;margin-top:2.2em;}
.prose h3{font-size:17px;margin-top:1.8em;}
.prose p{margin-top:1em;}
.prose ul{margin-top:1em;}
.prose li{position:relative;padding-left:16px;margin-top:.5em;}
.prose li::before{
  content:"";
  position:absolute;
  left:0;top:.78em;
  width:7px;height:1px;
  background:var(--teal);
}
.prose a{color:var(--teal);border-bottom:1px solid rgba(47,138,114,.5);}
.prose strong{color:var(--ivory);}

/* ---------- 图片容器（页面阶段放图） ---------- */
.media{
  position:relative;
  width:100%;
  overflow:hidden;
  background:var(--moss);
  border:1px solid var(--line-soft);
}
.media--21x9{aspect-ratio:21/9;}
.media--16x9{aspect-ratio:16/9;}
.media--3x2{aspect-ratio:3/2;}
.media--4x3{aspect-ratio:4/3;}
.media--1x1{aspect-ratio:1/1;}
.media > img,
.media > svg,
.media > video{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media__ph{position:absolute;inset:0;}
.media__ph--pitch{
  background:
    repeating-linear-gradient(90deg,rgba(237,233,223,.05) 0 1px,transparent 1px 72px),
    linear-gradient(160deg,var(--moss) 0%,var(--venue) 72%);
}
.media__ph--pitch::before{
  content:"";
  position:absolute;
  left:0;right:0;top:50%;
  height:1px;
  background:rgba(237,233,223,.14);
}
.media__ph--pitch::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:34%;
  aspect-ratio:1/1;
  transform:translate(-50%,-50%);
  border:1px solid rgba(237,233,223,.16);
  border-radius:50%;
}
.media__ph--flag{
  background:
    linear-gradient(135deg,var(--red) 0 30%,transparent 30% 100%),
    linear-gradient(315deg,var(--warn) 0 24%,transparent 24% 100%),
    linear-gradient(180deg,var(--coal) 0%,var(--venue) 100%);
}
.media__ph--digits{
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(200deg,var(--moss) 0%,var(--coal) 100%);
  font-family:var(--mono);
  font-size:clamp(40px,9vw,96px);
  line-height:1;
  letter-spacing:-.04em;
  color:rgba(237,233,223,.14);
}
.media__cap{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:12px 14px 10px;
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--ivory);
  background:linear-gradient(0deg,rgba(14,42,36,.94),rgba(14,42,36,0));
}

/* ---------- 动效与工具 ---------- */
.reveal{
  opacity:0;
  transform:translateY(8px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.reveal.is-in{opacity:1;transform:none;}

.to-top{
  position:fixed;
  right:clamp(14px,2.5vw,28px);
  bottom:clamp(14px,2.5vw,28px);
  z-index:75;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:10px 14px;
  font-size:11.5px;
  font-family:var(--mono);
  letter-spacing:.14em;
  color:var(--ivory);
  background:var(--coal);
  border:1px solid var(--line);
  border-radius:2px;
  box-shadow:var(--shadow);
  opacity:0;
  pointer-events:none;
  transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),color .18s linear,border-color .18s linear;
}
.to-top.is-on{opacity:1;pointer-events:auto;transform:none;}
.to-top:hover{color:var(--warn);border-color:var(--warn);}

.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

/* ============================================================
   响应式
   ============================================================ */
@media (min-width:720px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (min-width:1080px){
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
  .grid--4{grid-template-columns:repeat(4,minmax(0,1fr));}
  .footer__grid{grid-template-columns:1.1fr 1fr 1.1fr 1.5fr;}
}

@media (min-width:1180px){
  body{
    padding-left:var(--rail-w);
    transition:padding-left 240ms var(--ease);
  }
  html[data-rail="off"] body{padding-left:0;}

  .index-rail{
    width:var(--rail-w);
    transform:none;
    z-index:60;
    transition:transform 240ms var(--ease);
    box-shadow:none;
  }
  html[data-rail="off"] .index-rail{transform:translateX(-100%);}
  .index-rail[data-open]{box-shadow:none;}

  .nav-toggle{display:none;}
  .rail-toggle{display:inline-flex;}
  .rail-scrim{display:none;}
}

@media (max-width:719px){
  .cmd-status__label{display:none;}
  .cmd-link{display:none;}
  .brand__sub{letter-spacing:.12em;}
  .footer__meta{font-size:10.5px;}
}

@media (max-width:400px){
  .cmd-status{display:none;}
}

/* ---------- 焦点可见性增强 ---------- */
.rail__link:focus-visible,
.footer__list a:focus-visible,
.cmd-link:focus-visible,
.chip-btn:focus-visible,
.copy-btn:focus-visible,
.btn:focus-visible,
.to-top:focus-visible{
  outline:2px solid var(--warn);
  outline-offset:2px;
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .cmd-status__dot{animation:none;}
  .reveal{opacity:1;transform:none;transition:opacity .2s linear;}
  .index-rail{transition:none;}
  .rail__link:hover{transform:none;}
  .footer__list a:hover{transform:none;}
  .to-top{transition:opacity .2s linear,color .2s linear;}
  .progress__bar{transition:none;}
  .chip-btn,.btn,.cmd-link,.copy-btn,.copy-note{transition:background-color .2s linear,color .2s linear,border-color .2s linear,opacity .2s linear;}
}