/* ============================================================
   Home看台 · sports-home.com.cn
   /assets/site.css — 共享外壳 + 基础组件
   夜场看台：深墨绿底 / 荧光草绿强调 / 极细护栏边界
   ============================================================ */

:root{
  --c-night:#07130F;
  --c-stand:#0B1F17;
  --c-rail:#123B2A;
  --c-lime:#B8FF3C;
  --c-lime-soft:rgba(184,255,60,.14);
  --c-whistle:#FF6A2A;
  --c-paper:#F4EFE3;
  --c-paper-soft:#FBF7EC;
  --c-paperline:#D8D2C4;
  --c-ice:#EAF6EE;
  --c-mist:#8FA39A;
  --c-ink:#101512;

  --font-display:"Barlow Condensed","Oswald","Arial Narrow","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --gutter:clamp(16px,4vw,48px);
  --shell:1340px;
  --radius:2px;
  --ease:cubic-bezier(.22,.68,.24,1);
  --dur:.42s;
  --read-progress:0;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-night);
  color:var(--c-ice);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{display:block;max-width:100%}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse}
::selection{background:var(--c-lime);color:#06130D}

:focus-visible{outline:2px solid var(--c-lime);outline-offset:3px}
.section--paper :focus-visible,
.panel--paper :focus-visible{outline-color:var(--c-whistle)}

#main-content{display:block;scroll-margin-top:140px}

/* ---------- 排版语气 ---------- */
.display{
  font-family:var(--font-display);
  font-weight:600;
  line-height:.92;
  letter-spacing:-.005em;
  text-transform:uppercase;
}
.editorial{
  font-family:var(--font-serif);
  font-weight:600;
  letter-spacing:.01em;
  line-height:1.35;
}
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.06em;
}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--c-mist);
}
.lede{
  font-size:clamp(15px,1.35vw,18px);
  line-height:1.85;
  color:var(--c-mist);
  max-width:62ch;
}
.section--paper .lede{color:#4A554D}

/* ---------- 容器 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(48px,7vw,96px)}
.section--night{background:var(--c-night);color:var(--c-ice)}
.section--stand{background:var(--c-stand);color:var(--c-ice)}
.section--paper{background:var(--c-paper);color:var(--c-ink)}
.section--paper .eyebrow{color:#5C6A61}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  transform:translateY(-240%);
  padding:10px 20px;
  background:var(--c-lime);
  color:#06130D;
  font-family:var(--font-body);
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  border-radius:var(--radius);
  transition:transform .24s var(--ease);
}
.skip-link:focus-visible{transform:translateY(0)}

/* ============================================================
   头部：三层看台
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:var(--c-night);
  border-bottom:1px solid var(--c-rail);
}

/* 状态带 */
.rail{
  background:var(--c-stand);
  border-bottom:1px solid rgba(18,59,42,.9);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--c-mist);
}
.rail__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:34px;
}
.rail__status{
  display:inline-flex;
  align-items:center;
  gap:9px;
  white-space:nowrap;
  color:var(--c-mist);
}
.rail__dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--c-lime);
  box-shadow:0 0 0 3px var(--c-lime-soft);
  animation:railPulse 2.8s var(--ease) infinite;
}
.rail__links{display:flex;align-items:center;gap:22px}
.rail__links a{
  color:var(--c-mist);
  letter-spacing:.18em;
  transition:color .26s var(--ease);
}
.rail__links a:hover{color:var(--c-lime)}
@keyframes railPulse{
  0%,100%{box-shadow:0 0 0 3px var(--c-lime-soft)}
  55%{box-shadow:0 0 0 7px rgba(184,255,60,0)}
}

/* 主栏杆 */
.masthead{position:relative;background:var(--c-night)}
.masthead__inner{
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,32px);
  min-height:76px;
}

/* 品牌 */
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--c-ice);flex:0 0 auto}
.brand__mark{
  flex:0 0 auto;
  width:38px;
  height:38px;
  display:grid;
  place-items:center;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--c-lime);
  border:1px solid var(--c-rail);
  background:
    linear-gradient(150deg,rgba(184,255,60,.2),rgba(184,255,60,0) 62%),
    var(--c-stand);
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
  transition:border-color .3s var(--ease),color .3s var(--ease);
}
.brand:hover .brand__mark{border-color:var(--c-lime)}
.brand__text{display:flex;flex-direction:column;gap:4px;line-height:1}
.brand__name{
  font-family:var(--font-display);
  font-size:23px;
  font-weight:600;
  letter-spacing:.02em;
}
.brand__sub{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.3em;
  color:var(--c-mist);
}

/* 导航 */
.site-nav{margin-left:auto}
.site-nav__list{display:flex;align-items:center;gap:clamp(4px,1.1vw,20px)}
.site-nav__link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:12px 4px 15px;
  font-size:13px;
  letter-spacing:.1em;
  color:var(--c-mist);
  transition:color .26s var(--ease);
}
.site-nav__index{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.05em;
  color:rgba(143,163,154,.55);
  transition:color .26s var(--ease);
}
.site-nav__label{white-space:nowrap}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:var(--c-rail);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .34s var(--ease),background-color .34s var(--ease),box-shadow .34s var(--ease);
}
.site-nav__link:hover{color:var(--c-ice)}
.site-nav__link:hover .site-nav__index{color:var(--c-lime)}
.site-nav__link:hover::after{transform:scaleX(1);background:var(--c-mist)}
.site-nav__link[aria-current="page"]{color:var(--c-lime)}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--c-lime)}
.site-nav__link[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--c-lime);
  box-shadow:0 0 16px rgba(184,255,60,.55);
}
.site-nav__actions{display:none}

/* 桌面 CTA */
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:clamp(8px,1.6vw,24px);
  flex:0 0 auto;
}

/* 移动开关 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  margin-left:auto;
  padding:9px 13px;
  border:1px solid var(--c-rail);
  border-radius:var(--radius);
  color:var(--c-ice);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  cursor:pointer;
  transition:border-color .26s var(--ease),color .26s var(--ease);
}
.nav-toggle:hover{border-color:var(--c-lime);color:var(--c-lime)}
.nav-toggle__box{
  display:inline-flex;
  flex-direction:column;
  justify-content:space-between;
  width:16px;
  height:12px;
}
.nav-toggle__box span{
  display:block;
  width:100%;
  height:2px;
  background:currentColor;
  transition:transform .3s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[data-open]{border-color:var(--c-lime);color:var(--c-lime)}
.nav-toggle[data-open] .nav-toggle__box span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[data-open] .nav-toggle__box span:nth-child(2){opacity:0}
.nav-toggle[data-open] .nav-toggle__box span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-toggle__text{white-space:nowrap}

/* 灯带进度 */
.scroll-meter{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  pointer-events:none;
  background:transparent;
  overflow:hidden;
}
.scroll-meter span{
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(var(--read-progress));
  transform-origin:left center;
  background:linear-gradient(90deg,var(--c-rail) 0%,var(--c-lime) 78%,#E9FFB0 100%);
}

/* ============================================================
   按钮
   ============================================================ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:38px;
  padding:9px 18px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-body);
  font-size:13px;
  font-weight:500;
  letter-spacing:.08em;
  white-space:nowrap;
  cursor:pointer;
  transition:background-color .26s var(--ease),color .26s var(--ease),
             border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.btn--lime{
  background:var(--c-lime);
  color:#06130D;
  font-weight:600;
}
.btn--lime:hover{background:#CDFA7A;box-shadow:0 0 24px -6px rgba(184,255,60,.65)}
.btn--ghost{border-color:rgba(184,255,60,.34);color:var(--c-ice)}
.btn--ghost:hover{border-color:var(--c-lime);color:var(--c-lime)}
.btn--whistle{background:var(--c-whistle);color:#1B0903;font-weight:600}
.btn--whistle:hover{background:#FF8352}
.btn--quiet{border-color:var(--c-rail);color:var(--c-mist)}
.btn--quiet:hover{border-color:var(--c-mist);color:var(--c-ice)}
.btn--paper{background:var(--c-ink);color:var(--c-paper)}
.btn--paper:hover{background:#25312A}

/* ============================================================
   页面基础组件
   ============================================================ */
.crumbs{
  padding-block:18px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--c-mist);
}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li{display:inline-flex;align-items:center;gap:8px}
.crumbs li:not(:last-child)::after{content:"/";color:var(--c-rail)}
.crumbs__link{transition:color .24s var(--ease)}
.crumbs__link:hover{color:var(--c-lime)}

.chapter{
  display:flex;
  align-items:flex-end;
  gap:clamp(12px,2vw,26px);
  padding-bottom:14px;
  margin-bottom:clamp(24px,3vw,40px);
  border-bottom:1px solid var(--c-rail);
}
.chapter__num{
  font-family:var(--font-display);
  font-size:clamp(44px,7vw,88px);
  font-weight:600;
  line-height:.8;
  color:transparent;
  -webkit-text-stroke:1px var(--c-rail);
  flex:0 0 auto;
}
.chapter__title{
  font-family:var(--font-display);
  font-size:clamp(20px,2.6vw,32px);
  font-weight:600;
  line-height:1.1;
  letter-spacing:.01em;
}
.section--paper .chapter{border-bottom-color:var(--c-paperline)}
.section--paper .chapter__num{-webkit-text-stroke:1px var(--c-paperline)}

.grid{display:grid;gap:clamp(16px,2.4vw,32px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}

.panel{
  padding:clamp(18px,2.4vw,28px);
  background:var(--c-stand);
  border:1px solid var(--c-rail);
  border-radius:var(--radius);
}
.panel--paper{
  background:var(--c-paper-soft);
  border-color:var(--c-paperline);
  color:var(--c-ink);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid var(--c-rail);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--c-mist);
}
.tag--lime{border-color:rgba(184,255,60,.5);color:var(--c-lime);background:var(--c-lime-soft)}
.tag--whistle{border-color:rgba(255,106,42,.5);color:var(--c-whistle);background:rgba(255,106,42,.12)}

/* 图片容器（页面阶段填充 img / picture） */
.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 10;
  overflow:hidden;
  border:1px solid var(--c-rail);
  border-radius:var(--radius);
  background:
    radial-gradient(120% 90% at 16% 0%,rgba(184,255,60,.16),transparent 58%),
    repeating-linear-gradient(102deg,rgba(255,255,255,.035) 0 1px,transparent 1px 14px),
    var(--c-stand);
}
.media-frame > img,
.media-frame > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(1.02) contrast(1.03);
}
.media-frame__tag{
  position:absolute;
  left:0;
  bottom:0;
  padding:6px 12px;
  background:var(--c-night);
  color:var(--c-lime);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  text-transform:uppercase;
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame--paper{
  background:linear-gradient(160deg,var(--c-paper-soft),var(--c-paper));
  border-color:var(--c-paperline);
}

/* 可展开内容组 */
.fold{
  border:1px solid var(--c-rail);
  background:rgba(11,31,23,.72);
  border-radius:var(--radius);
}
.fold + .fold{margin-top:-1px}
.fold > summary{
  display:flex;
  align-items:center;
  gap:12px;
  padding:16px 18px;
  cursor:pointer;
  list-style:none;
  font-size:15px;
  color:var(--c-ice);
  transition:color .24s var(--ease);
}
.fold > summary::-webkit-details-marker{display:none}
.fold > summary::after{
  content:"+";
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:15px;
  color:var(--c-lime);
}
.fold[open] > summary{color:var(--c-lime)}
.fold[open] > summary::after{content:"−"}
.fold__body{
  padding:0 18px 18px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--c-mist);
}

/* 滚动显现 */
html[data-reveal] .reveal{
  opacity:0;
  transform:translateY(18px);
}
html[data-reveal] .reveal.is-in{
  opacity:1;
  transform:none;
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  overflow:hidden;
  background:var(--c-stand);
  border-top:1px solid var(--c-rail);
  color:var(--c-ice);
}
.pitch-band{
  height:26px;
  border-bottom:1px solid var(--c-rail);
  background:
    repeating-linear-gradient(90deg,rgba(184,255,60,.1) 0 2px,transparent 2px 62px),
    repeating-linear-gradient(90deg,rgba(18,59,42,.95) 0 62px,rgba(11,31,23,.95) 62px 124px);
}
.footer__grid{
  display:grid;
  grid-template-columns:minmax(230px,1.35fr) minmax(0,2fr) minmax(200px,1fr);
  gap:clamp(24px,4vw,64px);
  padding-block:clamp(40px,6vw,76px);
}
.footer__lead{min-width:0}
.footer__brand{
  display:inline-block;
  font-family:var(--font-display);
  font-size:27px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--c-ice);
  transition:color .26s var(--ease);
}
.footer__brand:hover{color:var(--c-lime)}
.footer__tagline{
  margin-top:14px;
  max-width:30ch;
  font-family:var(--font-serif);
  font-size:15px;
  line-height:1.9;
  color:var(--c-mist);
}
.footer__coord{
  margin-top:20px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.2em;
  color:rgba(143,163,154,.8);
}
.footer__nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,2vw,32px);
}
.footer__title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:500;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--c-lime);
}
.footer__list li + li{margin-top:9px}
.footer__list a{
  display:inline-block;
  padding-bottom:2px;
  font-size:14px;
  color:var(--c-mist);
  background-image:linear-gradient(var(--c-lime),var(--c-lime));
  background-repeat:no-repeat;
  background-position:0 100%;
  background-size:0 1px;
  transition:color .24s var(--ease),background-size .3s var(--ease);
}
.footer__list a:hover{color:var(--c-ice);background-size:100% 1px}
.footer__contact{
  min-width:0;
  padding-left:clamp(16px,2vw,28px);
  border-left:1px solid var(--c-rail);
}
.footer__value{
  display:block;
  font-family:var(--font-mono);
  font-size:13px;
  line-height:1.7;
  letter-spacing:.03em;
  color:var(--c-ice);
  word-break:break-word;
}
.footer__note{
  margin-top:16px;
  font-size:12.5px;
  line-height:1.8;
  color:var(--c-mist);
}
.footer__base{
  background:var(--c-night);
  border-top:1px solid var(--c-rail);
}
.footer__base-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding-block:18px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--c-mist);
}
.footer__copy{margin:0}
.footer__icp{margin:0;color:rgba(143,163,154,.75)}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1120px){
  .brand__name{font-size:21px}
  .site-nav__link{font-size:12.5px;letter-spacing:.06em}
}

@media (max-width:1040px){
  .nav-toggle{display:inline-flex}
  .header-actions{display:none}
  .site-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    display:none;
    margin-left:0;
    padding:8px var(--gutter) 22px;
    background:var(--c-stand);
    border-top:1px solid var(--c-rail);
    border-bottom:1px solid var(--c-rail);
    box-shadow:0 28px 46px -32px #000;
    max-height:calc(100vh - 110px);
    overflow-y:auto;
  }
  .site-nav[data-open]{display:block;animation:navDrop .28s var(--ease) both}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__link{
    width:100%;
    padding:15px 2px;
    font-size:15px;
    letter-spacing:.06em;
    border-bottom:1px solid rgba(18,59,42,.9);
  }
  .site-nav__link::after{display:none}
  .site-nav__link[aria-current="page"]{
    padding-left:12px;
    border-left:3px solid var(--c-lime);
    background:linear-gradient(90deg,rgba(184,255,60,.1),transparent 62%);
  }
  .site-nav__index{font-size:10px}
  .site-nav__actions{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-top:20px;
  }
  .site-nav__actions .btn{flex:1 1 160px}

  .footer__grid{grid-template-columns:minmax(0,1fr) minmax(0,1.7fr)}
  .footer__contact{
    grid-column:1 / -1;
    padding-left:0;
    padding-top:24px;
    border-left:0;
    border-top:1px solid var(--c-rail);
  }
}

@keyframes navDrop{
  from{opacity:0;transform:translateY(-10px)}
  to{opacity:1;transform:none}
}

@media (max-width:980px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:760px){
  .rail__inner{min-height:32px}
  .rail__status{font-size:10px;letter-spacing:.1em}
  .rail__links{gap:16px;font-size:10px}
  .masthead__inner{min-height:68px;gap:10px}
  .brand__mark{width:34px;height:34px}
  .brand__name{font-size:19px}
  .brand__sub{font-size:8px;letter-spacing:.24em}
  .site-nav__actions{flex-direction:column}
  .site-nav__actions .btn{flex:1 1 auto}

  .footer__nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .footer__tagline{max-width:none}
}

@media (max-width:640px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .footer__grid{grid-template-columns:minmax(0,1fr)}
  .footer__base-inner{flex-direction:column;align-items:flex-start}
}

@media (max-width:400px){
  .rail__links a{letter-spacing:.1em}
  .brand__sub{display:none}
  .nav-toggle__text{display:none}
}

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