/* ============================================================
   28体育赛场 · /assets/site.css
   共享外壳：reset / tokens / 排版 / 侧轨头部 / 页脚 / 基础组件
   ============================================================ */

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
[hidden]{display:none!important}

/* ---------- tokens ---------- */
:root{
  --green-deep:#06251D;
  --green-mid:#0C3B2E;
  --green-grass:#14624A;
  --score-red:#E4322B;
  --amber:#F2A93B;
  --white:#F4F8F6;
  --grey:#8FA79E;
  --indigo:#2B2A6B;
  --wine:#6E1F2C;
  --ink:#04120E;

  --rail-w:76px;
  --topbar-h:64px;

  --border-w:3px;
  --hard-shadow:6px 6px 0 var(--ink);
  --hard-shadow-sm:4px 4px 0 var(--ink);

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

  --step-h1:clamp(34px,5vw,62px);
  --step-h2:clamp(24px,3vw,36px);
  --step-h3:20px;
  --step-cap:13px;
}

/* ---------- base ---------- */
body{
  background:var(--green-deep);
  color:var(--white);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  min-height:100vh;
  overflow-x:hidden;
}
h1,h2,h3{font-family:var(--font-display);line-height:1.24;font-weight:800}
h1{font-size:var(--step-h1);letter-spacing:.1em}
h2{font-size:var(--step-h2);letter-spacing:.09em}
h3{font-size:var(--step-h3);letter-spacing:.08em}
p{line-height:1.85}
strong{color:var(--amber);font-weight:700}
code,kbd,samp{font-family:var(--font-mono);font-size:.94em;letter-spacing:.04em}

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

@media (min-width:1025px){
  body{padding-left:var(--rail-w)}
}
@media (max-width:1024px){
  body{padding-top:var(--topbar-h)}
  body.nav-open{overflow:hidden}
}

/* ---------- 容器与网格 ---------- */
.wrap{
  width:calc(100% - 48px);
  max-width:1320px;
  margin-inline:auto;
}
main{display:block;padding-top:clamp(24px,4vw,56px)}

.bento{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
}
.bento > *{grid-column:span 12}
@media (min-width:768px){
  .b-3{grid-column:span 6}
  .b-4{grid-column:span 6}
  .b-5{grid-column:span 6}
  .b-6{grid-column:span 12}
  .b-8{grid-column:span 12}
  .b-12{grid-column:span 12}
}
@media (min-width:1100px){
  .b-3{grid-column:span 3}
  .b-4{grid-column:span 4}
  .b-5{grid-column:span 5}
  .b-6{grid-column:span 6}
  .b-8{grid-column:span 8}
  .b-12{grid-column:span 12}
}

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

/* ---------- 分节 ---------- */
.section{
  position:relative;
  padding-block:clamp(44px,6vw,88px);
}
.section--canvas{background:var(--green-deep)}
.section--panel{
  background:var(--green-mid);
  border-top:var(--border-w) solid var(--ink);
  border-bottom:var(--border-w) solid var(--ink);
}
.section--indigo{background:var(--indigo)}
.section--wine{background:var(--wine)}

.section__head{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-bottom:clamp(24px,4vw,44px);
}
.section__no{
  display:flex;
  align-items:center;
  gap:12px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.24em;
  color:var(--amber);
  text-transform:uppercase;
}
.section__no::after{content:"";flex:1 1 auto;height:1px;background:var(--green-grass)}
.section__title{
  font-size:var(--step-h2);
  letter-spacing:.09em;
  font-weight:800;
}

/* ---------- 网格纹理 ---------- */
.grid-texture{position:relative}
.grid-texture::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(0deg,rgba(244,248,246,.06) 0 1px,transparent 1px 24px),
    repeating-linear-gradient(90deg,rgba(244,248,246,.06) 0 1px,transparent 1px 24px);
}
.grid-texture--slant::before{
  background-image:
    repeating-linear-gradient(12deg,rgba(244,248,246,.06) 0 1px,transparent 1px 24px),
    repeating-linear-gradient(102deg,rgba(244,248,246,.06) 0 1px,transparent 1px 24px);
}

/* ---------- 通用块 ---------- */
.panel{
  position:relative;
  background:var(--green-mid);
  border:var(--border-w) solid var(--ink);
  box-shadow:var(--hard-shadow);
  padding:clamp(18px,2.6vw,28px);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border:var(--border-w) solid var(--ink);
  box-shadow:var(--hard-shadow-sm);
  background:var(--amber);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.1em;
  line-height:1.3;
  text-align:center;
  transition:transform .09s linear,box-shadow .09s linear,background-color .09s linear,color .09s linear,border-color .09s linear;
}
.btn:hover{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}
.btn--score{background:var(--score-red);color:var(--white)}
.btn--amber{background:var(--amber);color:var(--ink)}
.btn--ghost{
  background:transparent;
  color:var(--white);
  border-color:var(--green-grass);
  box-shadow:none;
}
.btn--ghost:hover{border-color:var(--amber);color:var(--amber);box-shadow:none;transform:translate(2px,2px)}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--grey);
}
.crumbs a{color:var(--grey);border-bottom:1px solid transparent;transition:color .09s linear,border-color .09s linear}
.crumbs a:hover{color:var(--amber);border-bottom-color:var(--amber)}
.crumbs__sep{color:var(--green-grass)}

/* ---------- 记分牌数字块 ---------- */
.score{
  position:relative;
  overflow:hidden;
  background:var(--green-mid);
  border:var(--border-w) solid var(--ink);
  box-shadow:var(--hard-shadow);
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.score::after{
  content:"";
  position:absolute;
  inset:0;
  background:var(--white);
  opacity:0;
  pointer-events:none;
  transition:opacity .06s linear;
}
.score[data-flash]::after{opacity:.22}
.score__num{
  font-family:var(--font-mono);
  font-size:clamp(30px,4.4vw,52px);
  line-height:1;
  letter-spacing:.06em;
  color:var(--amber);
}
.score--red .score__num{color:var(--score-red)}
.score__unit{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--grey);
}

/* ---------- 标签 ---------- */
.tag{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  padding:3px 8px;
  border:2px solid var(--amber);
  color:var(--amber);
  line-height:1.5;
}
.tag--indigo{background:var(--indigo);border-color:var(--indigo);color:var(--white)}
.tag--wine{background:var(--wine);border-color:var(--wine);color:var(--white)}

/* ---------- 时间轴 ---------- */
.timeline{
  position:relative;
  border-left:var(--border-w) solid var(--green-grass);
  padding-left:26px;
}
.timeline__item{
  position:relative;
  padding-block:16px;
  border-bottom:1px solid rgba(20,98,74,.6);
}
.timeline__item:last-child{border-bottom:0}
.timeline__item::before{
  content:"";
  position:absolute;
  left:-35px;
  top:26px;
  width:12px;
  height:12px;
  background:var(--amber);
  border:2px solid var(--ink);
}
.timeline__minute{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.08em;
  color:var(--amber);
  display:block;
  margin-bottom:6px;
}
.timeline__text{color:var(--white);font-size:15px;line-height:1.8}

/* ---------- 数据表格 ---------- */
.data-table__wrap{
  width:100%;
  overflow-x:auto;
  border:var(--border-w) solid var(--ink);
  box-shadow:var(--hard-shadow);
  background:var(--green-deep);
}
.data-table{min-width:520px;font-size:15px}
.data-table th{
  background:var(--green-grass);
  color:var(--white);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  font-weight:400;
  text-align:left;
  padding:10px 14px;
  border-bottom:1px solid var(--ink);
  white-space:nowrap;
}
.data-table td{
  padding:12px 14px;
  border-bottom:1px solid var(--green-grass);
  color:var(--white);
  vertical-align:top;
}
.data-table tbody tr:hover{background:var(--green-mid)}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table__num{
  font-family:var(--font-mono);
  letter-spacing:.06em;
  color:var(--amber);
  white-space:nowrap;
}

/* ---------- 筛选标签 ---------- */
.chipbar{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.08em;
  padding:7px 15px;
  border:2px solid var(--green-grass);
  background:transparent;
  color:var(--white);
  transition:background-color .09s linear,color .09s linear,border-color .09s linear,transform .09s linear;
}
.chip:hover{transform:translate(2px,2px);border-color:var(--amber);color:var(--amber)}
.chip[aria-pressed="true"]{
  background:var(--score-red);
  border-color:var(--score-red);
  color:var(--white);
}

/* ---------- 分钟复制 ---------- */
.minute{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:14px;
  letter-spacing:.06em;
  color:var(--amber);
}
.minute__copy{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  padding:2px 8px;
  border:2px solid var(--green-grass);
  color:var(--grey);
  transition:background-color .08s linear,color .08s linear,border-color .08s linear;
}
.minute__copy:hover{border-color:var(--amber);color:var(--amber)}
.minute__copy[data-copied]{
  background:var(--amber);
  border-color:var(--amber);
  color:var(--ink);
}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16/9;
  background:var(--green-grass);
  border:var(--border-w) solid var(--ink);
  box-shadow:var(--hard-shadow);
  overflow:hidden;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame__img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(1.05) contrast(1.08);
}
.media-frame::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:50%;
  height:1px;
  background:rgba(244,248,246,.28);
  pointer-events:none;
}
.media-frame__cap{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:8px 12px;
  background:var(--ink);
  color:var(--white);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  border-top:2px solid var(--amber);
}

/* ---------- 侧边章节索引 ---------- */
.anchor-index{
  position:sticky;
  top:calc(var(--topbar-h) + 24px);
  display:flex;
  flex-direction:column;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
}
.anchor-index__link{
  display:block;
  padding:9px 0 9px 14px;
  border-left:2px solid var(--green-grass);
  color:var(--grey);
  transition:color .09s linear,border-color .09s linear,padding-left .09s linear;
}
.anchor-index__link:hover{color:var(--white);border-left-color:var(--white)}
.anchor-index__link[aria-current="location"]{
  color:var(--amber);
  border-left-color:var(--amber);
  padding-left:18px;
}

/* ---------- 正文 ---------- */
.prose{max-width:34em;font-size:16px;line-height:1.85}
.prose > p{margin-bottom:24px}
.prose > p:last-child{margin-bottom:0}
.prose h2{margin-block:48px 24px;font-size:var(--step-h2)}
.prose h3{margin-block:32px 16px;font-size:var(--step-h3)}
.prose ul,.prose ol{margin-bottom:24px}
.prose li{
  border-left:var(--border-w) solid var(--green-grass);
  padding-left:16px;
  margin-bottom:12px;
  line-height:1.8;
}
.prose a{color:var(--amber);border-bottom:1px solid var(--green-grass);transition:border-color .09s linear}
.prose a:hover{border-bottom-color:var(--amber)}
.prose blockquote{
  margin:0 0 24px;
  padding:16px 20px;
  border-left:var(--border-w) solid var(--amber);
  background:var(--green-mid);
}

/* ============================================================
   头部 · 侧边轨道导航
   ============================================================ */
.skip-link{
  position:fixed;
  left:12px;
  top:-120px;
  z-index:600;
  padding:12px 20px;
  background:var(--amber);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:14px;
  letter-spacing:.08em;
  border:var(--border-w) solid var(--ink);
  transition:top .12s linear;
}
.skip-link:focus{top:12px}

.site-header{
  position:fixed;
  top:0;
  right:auto;
  bottom:0;
  left:0;
  width:var(--rail-w);
  z-index:300;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
  padding:16px 0 14px;
  background:var(--green-deep);
  border-right:var(--border-w) solid var(--ink);
  transition:background-color .2s linear;
}
.site-header[data-scrolled]{background:var(--green-mid)}

.rail-brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  width:100%;
  padding-bottom:14px;
  border-bottom:var(--border-w) solid var(--green-grass);
}
.rail-brand__num{
  font-family:var(--font-mono);
  font-size:22px;
  font-weight:700;
  line-height:1;
  letter-spacing:.04em;
  color:var(--amber);
}
.rail-brand__name{
  writing-mode:vertical-rl;
  text-orientation:upright;
  font-family:var(--font-display);
  font-size:13px;
  font-weight:800;
  letter-spacing:.24em;
  color:var(--white);
}

.nav-toggle{display:none}

.site-nav{
  flex:1 1 auto;
  min-height:0;
  width:100%;
  display:flex;
  flex-direction:column;
  align-items:center;
  overflow-y:auto;
  overflow-x:hidden;
  scrollbar-width:thin;
}
.site-nav__list{
  width:100%;
  display:flex;
  flex-direction:column;
  align-items:center;
}
.site-nav__item{width:100%}
.site-nav__link{
  position:relative;
  width:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:11px 0;
  writing-mode:vertical-rl;
  text-orientation:upright;
  font-family:var(--font-display);
  font-size:13px;
  font-weight:700;
  letter-spacing:.22em;
  color:var(--grey);
  transition:color .09s linear,background-color .09s linear,transform .09s linear;
}
.site-nav__link:hover{
  color:var(--white);
  background:var(--green-mid);
  transform:translateX(2px);
}
.site-nav__link[aria-current="page"]{color:var(--amber)}
.site-nav__link[aria-current="page"]::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:3px;
  height:60%;
  background:var(--amber);
}

.rail-cta{
  flex:0 0 auto;
  width:100%;
  margin-top:auto;
  padding-top:14px;
  border-top:var(--border-w) solid var(--green-grass);
  display:flex;
  justify-content:center;
}
.rail-cta .btn{
  writing-mode:vertical-rl;
  text-orientation:upright;
  padding:16px 12px;
  font-size:12px;
  letter-spacing:.2em;
  box-shadow:3px 3px 0 var(--ink);
}
.rail-cta .btn:hover{
  transform:translate(2px,2px);
  box-shadow:1px 1px 0 var(--ink);
}

@media (min-width:1025px) and (max-height:780px){
  .site-nav__link{padding:7px 0;font-size:12px}
  .rail-brand__num{font-size:19px}
  .rail-cta .btn{padding:12px 10px;font-size:11px}
}

/* ---------- 移动端：顶栏 + 抽屉 ---------- */
@media (max-width:1024px){
  .site-header{
    top:0;
    right:0;
    bottom:auto;
    left:0;
    width:100%;
    height:var(--topbar-h);
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:0 14px;
    background:var(--green-mid);
    border-right:0;
    border-bottom:var(--border-w) solid var(--ink);
  }
  .site-header::before{
    content:"";
    position:fixed;
    inset:0;
    background:rgba(4,18,14,.74);
    opacity:0;
    pointer-events:none;
    transition:opacity .18s linear;
  }
  .site-header[data-open]::before{opacity:1}
  .site-header[data-scrolled]{background:var(--green-mid)}

  .rail-brand{
    flex-direction:row;
    align-items:center;
    gap:8px;
    width:auto;
    padding:0 12px 0 0;
    border-bottom:0;
    border-right:var(--border-w) solid var(--green-grass);
  }
  .rail-brand__num{font-size:18px}
  .rail-brand__name{
    writing-mode:horizontal-tb;
    text-orientation:initial;
    font-size:14px;
    letter-spacing:.18em;
  }

  .nav-toggle{
    position:relative;
    z-index:2;
    display:flex;
    align-items:center;
    gap:10px;
    padding:9px 14px;
    border:var(--border-w) solid var(--ink);
    background:var(--amber);
    color:var(--ink);
    font-family:var(--font-mono);
    font-size:12px;
    letter-spacing:.12em;
    transition:background-color .1s linear,color .1s linear;
  }
  .nav-toggle__bars{
    position:relative;
    display:block;
    width:18px;
    height:2px;
    flex:0 0 auto;
    background:currentColor;
    transition:background-color .1s linear;
  }
  .nav-toggle__bars::before,
  .nav-toggle__bars::after{
    content:"";
    position:absolute;
    left:0;
    width:18px;
    height:2px;
    background:currentColor;
    transition:transform .12s linear,background-color .1s linear;
  }
  .nav-toggle__bars::before{top:-6px}
  .nav-toggle__bars::after{top:6px}
  .site-header[data-open] .nav-toggle{background:var(--score-red);color:var(--white)}
  .site-header[data-open] .nav-toggle__bars{background:transparent}
  .site-header[data-open] .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg)}
  .site-header[data-open] .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg)}

  .site-nav{
    position:fixed;
    top:var(--topbar-h);
    left:0;
    bottom:0;
    width:min(320px,86vw);
    z-index:1;
    flex:none;
    align-items:stretch;
    padding:16px 18px 28px;
    background:var(--green-deep);
    border-right:var(--border-w) solid var(--ink);
    overflow-y:auto;
    transform:translateX(-102%);
    transition:transform .22s linear;
  }
  .site-nav[data-open]{transform:translateX(0)}
  .site-nav__list{align-items:stretch}
  .site-nav__link{
    writing-mode:horizontal-tb;
    text-orientation:initial;
    justify-content:flex-start;
    padding:14px 12px;
    font-size:15px;
    letter-spacing:.14em;
    color:var(--white);
    border-bottom:1px solid var(--green-grass);
  }
  .site-nav__link:hover{transform:translateX(2px)}
  .rail-cta{
    margin-top:20px;
    padding-top:0;
    border-top:0;
    justify-content:stretch;
  }
  .rail-cta .btn{
    writing-mode:horizontal-tb;
    text-orientation:initial;
    width:100%;
    padding:13px 18px;
    font-size:13px;
    letter-spacing:.12em;
  }
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  margin-top:clamp(48px,7vw,96px);
  background:var(--green-mid);
  border-top:var(--border-w) solid var(--ink);
  box-shadow:inset 0 3px 0 var(--amber);
  padding-block:clamp(36px,5vw,60px) 24px;
  color:var(--white);
}
.footer__inner{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
.footer__brand{display:flex;flex-direction:column;gap:12px}
.footer__mark{
  display:inline-flex;
  align-items:baseline;
  gap:10px;
  width:fit-content;
}
.footer__num{
  font-family:var(--font-mono);
  font-size:26px;
  font-weight:700;
  line-height:1;
  letter-spacing:.04em;
  color:var(--amber);
}
.footer__name{
  font-family:var(--font-display);
  font-size:17px;
  font-weight:800;
  letter-spacing:.22em;
}
.footer__sig{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--amber);
}
.footer__meta{
  font-size:13px;
  line-height:1.8;
  color:var(--grey);
  max-width:30em;
}
.footer__group{display:flex;flex-direction:column;gap:12px}
.footer__title{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:400;
  letter-spacing:.22em;
  color:var(--amber);
  padding-bottom:8px;
  border-bottom:1px solid var(--green-grass);
}
.footer__list{display:flex;flex-direction:column;gap:10px}
.footer__list a{
  font-size:14px;
  color:var(--grey);
  border-bottom:1px solid transparent;
  transition:color .09s linear,border-color .09s linear;
}
.footer__list a:hover{color:var(--white);border-bottom-color:var(--amber)}
.footer__list--plain li{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  line-height:1.7;
  color:var(--white);
  word-break:break-word;
}
.footer__k{
  display:inline-block;
  min-width:44px;
  color:var(--green-grass);
  color:var(--grey);
  margin-right:8px;
}
.footer__base{
  margin-top:32px;
  padding-top:16px;
  border-top:1px solid var(--green-grass);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  align-items:center;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--grey);
}
.footer__copy,.footer__icp{margin:0}

@media (min-width:720px){
  .footer__inner{grid-template-columns:repeat(2,1fr);gap:36px}
}
@media (min-width:1080px){
  .footer__inner{grid-template-columns:1.5fr 1fr 1fr 1fr 1.6fr}
}

/* ============================================================
   动效降级
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .btn:hover,
  .chip:hover,
  .site-nav__link:hover{transform:none}
  .score::after{display:none}
}