/* ============================================================
   33体育看台 · Site Kit
   深场绿底 / 看台竖栏框架 / 信号柠檬高亮
   ============================================================ */

:root{
  --field:#06170F;
  --stand:#0B2A1C;
  --turf:#14432C;
  --line:#2A5C41;
  --paper:#F5F3EA;
  --cool:#A9B6AE;
  --signal:#E9FF4D;
  --orange:#FF7A2F;
  --mist:#6F8478;

  --rail-w:88px;
  --radius-card:24px;
  --radius-media:28px;
  --radius-pill:999px;
  --gutter:clamp(20px,4vw,44px);
  --ease:cubic-bezier(.2,.7,.3,1);

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",Georgia,serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
img,svg,video{max-width:100%}
h1,h2,h3,h4,p,ul,ol,dl,figure{margin:0}
ul,ol{padding:0}
button,input,select,textarea{font:inherit;color:inherit}

body{
  background:var(--field);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

@media (min-width:900px){body{padding-left:var(--rail-w)}}
@media (max-width:899px){body{padding-top:62px;padding-bottom:96px}}

a{color:var(--signal)}
::selection{background:var(--signal);color:var(--field)}

:where(a,button,summary,[tabindex]):focus-visible{
  outline:2px solid var(--signal);
  outline-offset:3px;
  border-radius:6px;
}

.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;
}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:10px 18px;border-radius:var(--radius-pill);
  background:var(--signal);color:var(--field);
  font-size:14px;font-weight:700;text-decoration:none;
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:none}

/* ---------- 阅读进度 ---------- */
.read-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:120;
  background:rgba(42,92,65,.4);pointer-events:none;
}
@media (min-width:900px){.read-progress{left:var(--rail-w)}}
.read-progress__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--signal) 0%,var(--signal) 72%,var(--orange) 100%);
  transition:transform .1s linear;
}

/* ---------- 页头：看台竖栏 ---------- */
.site-header{position:relative;z-index:70}

.stand-rail{
  position:fixed;inset:0 auto 0 0;width:var(--rail-w);z-index:70;
  display:flex;flex-direction:column;align-items:center;justify-content:space-between;
  gap:14px;padding:20px 10px 18px;
  background:
    radial-gradient(120% 55% at 50% 0%,rgba(233,255,77,.12),transparent 70%),
    linear-gradient(180deg,#0B2A1C 0%,#071B12 100%);
  border-right:1px solid var(--line);
  overflow-y:auto;scrollbar-width:none;
}
.stand-rail::-webkit-scrollbar{display:none}
.rail-brand,.rail-nav,.rail-foot{flex:0 0 auto}

.rail-brand{
  display:flex;flex-direction:column;align-items:center;gap:10px;
  text-decoration:none;color:var(--paper);
}
.rail-brand__mark{
  font-family:var(--font-display);font-weight:900;font-size:24px;line-height:1;
  letter-spacing:-.04em;color:var(--signal);
}
.rail-brand__name{
  writing-mode:vertical-rl;font-size:12px;letter-spacing:.3em;color:var(--paper);
}

.rail-tagline{
  writing-mode:vertical-rl;margin:0;font-size:11.5px;letter-spacing:.32em;
  color:var(--mist);text-align:center;
}

.rail-nav{width:100%}
.rail-nav__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;width:100%}
.rail-nav__item{width:100%}
.rail-nav__link{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:2px;width:100%;min-height:48px;padding:6px 2px;border-radius:12px;
  text-decoration:none;color:var(--cool);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.rail-nav__link:hover{color:var(--paper);background:rgba(20,67,44,.6)}
.rail-nav__num{
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.08em;
  color:var(--mist);font-variant-numeric:tabular-nums;
}
.rail-nav__label{font-size:12px;line-height:1.25;letter-spacing:.02em;color:inherit;text-align:center}
.rail-nav__link::before{
  content:"";position:absolute;left:-4px;top:50%;width:3px;height:0;
  border-radius:2px;background:var(--signal);transform:translateY(-50%);
  transition:height .2s var(--ease);
}
.rail-nav__link[aria-current="page"],
.rail-nav__link.is-active{color:var(--signal);background:rgba(233,255,77,.07)}
.rail-nav__link[aria-current="page"] .rail-nav__num,
.rail-nav__link.is-active .rail-nav__num{color:var(--orange)}
.rail-nav__link[aria-current="page"]::before,
.rail-nav__link.is-active::before{height:24px}

.rail-foot{display:flex;flex-direction:column;align-items:center;gap:12px;width:100%}
.rail-issue{
  writing-mode:vertical-rl;margin:0;font-family:var(--font-mono);
  font-size:9.5px;letter-spacing:.18em;color:var(--cool);text-align:center;
}
.rail-cta{
  display:grid;place-items:center;width:60px;min-height:48px;padding:6px;
  border-radius:var(--radius-pill);background:var(--signal);color:var(--field);
  font-size:12px;font-weight:700;letter-spacing:.06em;line-height:1.2;
  text-align:center;text-decoration:none;
  transition:transform .2s var(--ease),background-color .2s var(--ease);
}
.rail-cta:hover{background:#F4FF8C;transform:translateY(-1px)}

.mobile-bar{display:none}
.nav-toggle{display:none}
.quick-bar{display:none}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;margin-top:clamp(40px,7vw,90px);overflow:hidden;
  background:linear-gradient(180deg,#082017 0%,#0B2A1C 100%);
  border-top:1px solid var(--line);
}
.footer-glow{
  position:absolute;left:-12%;bottom:-45%;width:62vw;height:62vw;
  max-width:640px;max-height:640px;pointer-events:none;
  background:radial-gradient(circle,rgba(233,255,77,.13),transparent 66%);
}
.footer-top{
  position:relative;display:grid;grid-template-columns:1fr;
  gap:clamp(28px,5vw,64px);
  padding-top:clamp(44px,6vw,76px);padding-bottom:clamp(32px,4vw,52px);
}
@media (min-width:820px){.footer-top{grid-template-columns:minmax(220px,1fr) 1.7fr}}

.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:8px}
.footer-brand__mark{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(44px,7vw,68px);line-height:.9;letter-spacing:-.04em;
  color:var(--signal);text-decoration:none;
}
.footer-brand__name{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.28em;color:var(--cool)}
.footer-claim{
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(20px,2.6vw,28px);line-height:1.35;letter-spacing:-.01em;
  margin-top:12px;color:var(--paper);max-width:12em;
}

.footer-cols{display:grid;gap:clamp(18px,3vw,34px);grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}
.footer-col__title{
  font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.2em;
  color:var(--signal);margin-bottom:10px;text-transform:uppercase;
}
.footer-col__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:0}
.footer-col__link{
  display:inline-flex;align-items:center;min-height:44px;
  font-size:14.5px;color:var(--cool);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-col__link:hover{color:var(--paper);border-color:var(--signal)}

.footer-band{
  position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:8px 26px;
  padding-top:16px;padding-bottom:16px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.footer-band__item{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;
  color:var(--cool);font-variant-numeric:tabular-nums;
}
.footer-band__item--signal{color:var(--signal)}

.footer-legal{
  position:relative;display:flex;flex-wrap:wrap;align-items:baseline;
  gap:6px 22px;padding-top:20px;padding-bottom:34px;
}
.footer-legal__line{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.02em;color:var(--mist);
}
.footer-legal__note{font-size:12.5px;color:var(--mist)}

/* ---------- 通用容器 ---------- */
.container{
  width:100%;max-width:1240px;margin-inline:auto;
  padding-inline:var(--gutter);
}

.section{position:relative;padding-block:clamp(56px,8vw,110px)}
.section--band{background:var(--stand)}
.section--turf{background:var(--turf)}
.section--paper{background:var(--paper);color:var(--stand)}
.section--paper .section-lede{color:#4A5C52}
.section--paper .eyebrow{color:#2A5C41}
.section--paper .card{background:#FFFFFF;border-color:#DCD8C9;color:var(--stand)}
.section--paper .card__meta{color:#6F8478}
.section--paper .stat__value{color:var(--stand)}
.section--paper .stat__label{color:#4A5C52}

/* ---------- 编辑感标记 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--signal);
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;display:block}

.index-mark{
  display:block;font-family:var(--font-display);font-weight:900;
  font-size:clamp(48px,9vw,96px);line-height:.9;letter-spacing:-.03em;
  color:var(--signal);font-variant-numeric:tabular-nums;
}
.index-mark--line{padding-left:18px;border-left:1px solid var(--line)}

.section-head{display:flex;flex-direction:column;gap:14px;max-width:46rem;margin-bottom:clamp(28px,4vw,56px)}
.section-title{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(28px,4.4vw,52px);line-height:1.14;letter-spacing:-.02em;
  text-wrap:balance;
}
.section-lede{font-size:17px;line-height:1.85;color:var(--cool);max-width:34em}

.text-signal{color:var(--signal)}
.text-orange{color:var(--orange)}

/* ---------- 网格 ---------- */
.grid-2,.grid-3{display:grid;gap:clamp(16px,2.4vw,28px);grid-template-columns:1fr}
@media (min-width:760px){
  .grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
}

/* ---------- 卡片 ---------- */
.card{
  display:flex;flex-direction:column;gap:12px;
  padding:clamp(20px,3vw,30px);
  background:var(--turf);border:1px solid var(--line);
  border-radius:var(--radius-card);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.card:hover{border-color:var(--signal);transform:translateY(-2px)}
.card__title{font-family:var(--font-display);font-weight:700;font-size:20px;line-height:1.4;letter-spacing:-.01em}
.card__meta{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--mist)}

/* ---------- 胶囊与按钮 ---------- */
.pill,.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-pill);
  border:1px solid transparent;text-decoration:none;
  font-size:14px;font-weight:600;letter-spacing:.02em;
  transition:transform .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.pill--signal,.btn--signal{background:var(--signal);color:var(--field)}
.pill--signal:hover,.btn--signal:hover{background:#F4FF8C;transform:translateY(-1px)}
.pill--ghost,.btn--ghost{border-color:var(--line);color:var(--paper);background:transparent}
.pill--ghost:hover,.btn--ghost:hover{border-color:var(--signal);color:var(--signal)}
.btn--orange{background:var(--orange);color:#20100A}
.btn--orange:hover{background:#FF9257;transform:translateY(-1px)}

.tag{
  display:inline-flex;align-items:center;min-height:44px;padding:0 18px;
  border:1px solid var(--line);border-radius:var(--radius-pill);
  background:transparent;color:var(--cool);
  font-size:13px;letter-spacing:.04em;cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.tag:hover{color:var(--paper);border-color:var(--signal)}
.tag.is-on,.tag[aria-pressed="true"]{background:var(--signal);border-color:var(--signal);color:var(--field);font-weight:700}

/* ---------- 数据 ---------- */
.stat{display:flex;flex-direction:column;gap:2px}
.stat__value{
  font-family:var(--font-mono);font-weight:600;
  font-size:clamp(26px,3.6vw,40px);line-height:1.1;letter-spacing:-.02em;
  color:var(--paper);font-variant-numeric:tabular-nums;
}
.stat--orange .stat__value{color:var(--orange)}
.stat__label{font-size:12.5px;letter-spacing:.1em;color:var(--cool)}

.legend{display:flex;flex-wrap:wrap;gap:12px 20px}
.legend__item{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--cool)}
.legend__swatch{width:10px;height:10px;border-radius:3px;background:var(--signal);flex:0 0 auto}
.legend__swatch--orange{background:var(--orange)}
.legend__swatch--line{background:var(--line)}
.legend__swatch--mist{background:var(--mist)}

/* ---------- 图片容器基础 ---------- */
.media-frame{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius-media);
  background:linear-gradient(150deg,var(--turf),#0B2A1C 80%);
  aspect-ratio:16/10;
}
.media-frame img{display:block;width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--slant{clip-path:polygon(0 0,100% 0,100% 100%,0 calc(100% - 34px))}
.media-frame__caption{
  display:block;margin-top:10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.05em;color:var(--cool);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin-bottom:clamp(18px,3vw,30px);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;color:var(--mist);
}
.breadcrumb__link{color:var(--cool);text-decoration:none}
.breadcrumb__link:hover{color:var(--signal)}
.breadcrumb__sep{color:var(--line)}

/* ---------- 折叠面板 ---------- */
.fold{border-top:1px solid var(--line);padding-block:4px}
.fold__title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding-block:10px;cursor:pointer;list-style:none;
  font-family:var(--font-display);font-weight:700;font-size:18px;line-height:1.5;
  color:var(--paper);
}
.fold__title::-webkit-details-marker{display:none}
.fold__title::after{
  content:"+";font-family:var(--font-mono);font-size:20px;color:var(--signal);
  transition:transform .24s var(--ease);
}
.fold[open] .fold__title::after{transform:rotate(45deg)}
.fold__body{color:var(--cool);font-size:15.5px;line-height:1.85;padding-bottom:18px}
.fold__body > * + *{margin-top:12px}

/* ---------- 入场显现 ---------- */
html.js-reveal [data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .32s ease-out,transform .32s ease-out}
html.js-reveal [data-reveal].is-visible{opacity:1;transform:none}

/* ============================================================
   移动端 / 平板
   ============================================================ */
@media (max-width:899px){
  .mobile-bar{
    display:flex;align-items:center;gap:10px;
    position:fixed;top:0;left:0;right:0;height:62px;padding:0 16px;z-index:90;
    background:rgba(6,23,15,.95);
    -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .mobile-bar__brand{
    font-family:var(--font-display);font-weight:800;font-size:17px;
    letter-spacing:-.01em;color:var(--paper);text-decoration:none;white-space:nowrap;
  }
  .mobile-bar__issue{
    font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;color:var(--cool);
    border:1px solid var(--line);border-radius:var(--radius-pill);
    padding:4px 9px;white-space:nowrap;
  }
  .nav-toggle{
    display:inline-grid;place-items:center;margin-left:auto;
    min-width:66px;min-height:44px;padding:0 14px;
    border:1px solid var(--line);border-radius:var(--radius-pill);
    background:var(--turf);color:var(--paper);
    font-size:13px;font-weight:600;letter-spacing:.04em;cursor:pointer;
    transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  }
  .site-header[data-open] .nav-toggle{background:var(--signal);border-color:var(--signal);color:var(--field)}

  .quick-bar{
    display:flex;gap:6px;
    position:fixed;left:12px;right:12px;bottom:12px;z-index:90;
    padding:7px;border:1px solid var(--line);border-radius:var(--radius-pill);
    background:rgba(11,42,28,.96);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    box-shadow:0 12px 30px rgba(0,0,0,.45);
  }
  .quick-bar__link{
    flex:1 1 0;display:grid;place-items:center;min-height:44px;
    border-radius:var(--radius-pill);text-decoration:none;
    color:var(--cool);font-size:12.5px;letter-spacing:.04em;
  }
  .quick-bar__link:hover,.quick-bar__link:focus-visible{color:var(--paper);background:rgba(20,67,44,.85)}
  .quick-bar__link[aria-current="page"]{background:var(--signal);color:var(--field);font-weight:700}
  .quick-bar__menu{
    flex:0 0 64px;display:grid;place-items:center;min-height:44px;
    border:0;border-radius:var(--radius-pill);cursor:pointer;
    background:rgba(233,255,77,.16);color:var(--signal);
    font-size:12.5px;font-weight:700;letter-spacing:.04em;
    transition:background-color .2s var(--ease),color .2s var(--ease);
  }
  .site-header[data-open] .quick-bar__menu{background:var(--signal);color:var(--field)}

  .stand-rail{display:none}
  .site-header[data-open] .stand-rail{
    display:flex;position:fixed;inset:0;width:auto;height:auto;z-index:80;
    align-items:stretch;justify-content:flex-start;gap:18px;
    padding:80px 22px 112px;border-right:0;overflow-y:auto;
    background:
      radial-gradient(120% 48% at 82% 0%,rgba(233,255,77,.12),transparent 66%),
      var(--field);
  }
  .site-header[data-open] .rail-brand{flex-direction:row;align-items:baseline;gap:10px;padding-bottom:4px}
  .site-header[data-open] .rail-brand__mark{font-size:26px}
  .site-header[data-open] .rail-brand__name{writing-mode:horizontal-tb;font-size:15px;letter-spacing:.18em}
  .site-header[data-open] .rail-tagline{writing-mode:horizontal-tb;font-size:12px;letter-spacing:.2em;color:var(--mist);text-align:left}
  .site-header[data-open] .rail-nav{width:100%}
  .site-header[data-open] .rail-nav__list{gap:0}
  .site-header[data-open] .rail-nav__link{
    flex-direction:row;justify-content:flex-start;align-items:baseline;gap:14px;
    min-height:58px;padding:14px 2px;border-radius:0;background:none;
    border-bottom:1px solid var(--line);
  }
  .site-header[data-open] .rail-nav__link::before{display:none}
  .site-header[data-open] .rail-nav__link:hover{background:none;color:var(--paper)}
  .site-header[data-open] .rail-nav__label{
    font-family:var(--font-display);font-weight:700;font-size:24px;
    line-height:1.3;letter-spacing:-.01em;
  }
  .site-header[data-open] .rail-nav__num{font-size:11px;letter-spacing:.12em;color:var(--mist)}
  .site-header[data-open] .rail-nav__link[aria-current="page"],
  .site-header[data-open] .rail-nav__link.is-active{color:var(--signal);background:none}
  .site-header[data-open] .rail-nav__link[aria-current="page"] .rail-nav__num,
  .site-header[data-open] .rail-nav__link.is-active .rail-nav__num{color:var(--orange)}
  .site-header[data-open] .rail-foot{
    flex-direction:row;align-items:center;justify-content:space-between;
    gap:12px;width:100%;margin-top:10px;
  }
  .site-header[data-open] .rail-issue{writing-mode:horizontal-tb;font-size:10.5px;letter-spacing:.14em;text-align:left}
  .site-header[data-open] .rail-cta{width:auto;min-width:132px;height:48px;padding:0 22px;font-size:13px}

  html.nav-open{overflow:hidden}
}

@media (min-width:900px) and (max-height:800px){
  .rail-tagline{display:none}
  .rail-nav__link{min-height:44px}
  .rail-nav__label{font-size:11.5px}
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  html.js-reveal [data-reveal]{opacity:1;transform:none;transition:none}
  .read-progress__bar{transition:none}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}