/* ============================================================
   江南体育赛场 · /assets/site.css
   共享外壳：顶部状态条 + 左品牌轨道 + 右栏目列 + 三段页脚
   ============================================================ */

:root{
  --dai-ink:#10242B;
  --rain-ink:#16333C;
  --mountain:#1F4A55;
  --moon:#F2F5F4;
  --paper:#E4E9E8;
  --stone:#6E8489;
  --orange:#FF6A1F;
  --cyan:#3FD0C9;
  --ink:#0C1A1E;
  --mist:rgba(242,245,244,.08);

  --font-data:"DIN Alternate","Roboto Mono","SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --font-title:"Source Han Sans SC","Noto Sans CJK SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;

  --radius-sm:12px;
  --radius-card:24px;
  --radius-lg:28px;
  --pill:999px;

  --topbar-h:36px;
  --rail-w:88px;
  --nav-w:140px;
  --edge-pad:clamp(20px,4vw,56px);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  margin:0;
  padding-top:var(--topbar-h);
  padding-left:var(--rail-w);
  padding-right:var(--nav-w);
  min-height:100vh;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--moon);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,address{margin:0}
address{font-style:normal}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
::selection{background:var(--orange);color:#0C1A1E}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px;border-radius:4px}

/* ---------- 跳转链 ---------- */
.skip-link{
  position:fixed;
  left:12px;top:-72px;
  z-index:200;
  display:inline-block;
  padding:10px 20px;
  border-radius:var(--pill);
  background:var(--orange);
  color:#0C1A1E;
  font-size:13px;font-weight:700;line-height:1.4;
  transition:top .18s ease;
}
.skip-link:focus{top:44px}

/* ---------- 顶部状态条 ---------- */
.topbar{
  position:fixed;
  inset:0 0 auto 0;
  height:var(--topbar-h);
  z-index:100;
  display:flex;
  align-items:center;
  gap:14px;
  padding:0 12px 0 16px;
  background:var(--dai-ink);
  color:rgba(242,245,244,.68);
  font-size:12px;
  letter-spacing:.05em;
  border-bottom:1px solid var(--mountain);
}
.topbar__status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-width:0;
  white-space:nowrap;
  overflow:hidden;
}
.topbar__label{color:var(--moon);font-weight:700}
.topbar__sep{color:var(--mountain)}
.topbar__meta{color:rgba(242,245,244,.55)}
.topbar__clock{
  font-family:var(--font-data);
  font-variant-numeric:tabular-nums;
  color:var(--cyan);
  letter-spacing:.1em;
  padding-left:10px;
  border-left:1px solid var(--mountain);
}

.status-dot,.pulse-dot{
  position:relative;
  display:inline-block;
  flex:0 0 auto;
  width:8px;height:8px;
  border-radius:50%;
  background:currentColor;
  color:var(--cyan);
}
.status-dot::after,.pulse-dot::after{
  content:"";
  position:absolute;
  inset:-4px;
  border-radius:50%;
  border:1px solid currentColor;
  animation:dot-pulse 2.4s ease-out infinite;
}
.pulse-dot{color:var(--orange)}
@keyframes dot-pulse{
  0%{transform:scale(.6);opacity:.85}
  70%{transform:scale(1.75);opacity:0}
  100%{transform:scale(1.75);opacity:0}
}

/* ---------- 移动栏目开关 ---------- */
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  margin-left:auto;
  padding:6px 13px;
  border-radius:var(--pill);
  background:var(--orange);
  color:#0C1A1E;
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
  line-height:1;
}
.nav-toggle__glyph{
  display:inline-block;
  width:14px;height:2px;
  border-radius:2px;
  background:currentColor;
  box-shadow:0 -5px 0 currentColor,0 5px 0 currentColor;
}

/* ---------- 左缘品牌轨道 ---------- */
.brand-rail{
  position:fixed;
  top:var(--topbar-h);
  left:0;bottom:0;
  width:var(--rail-w);
  z-index:95;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:space-between;
  padding:26px 0 30px;
  background:var(--dai-ink);
  color:var(--moon);
  border-right:1px solid var(--mountain);
  transition:background-color .18s ease;
}
.brand-rail:hover{background:var(--rain-ink)}
.brand-rail__mark{
  display:flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:12px;
  background:var(--orange);
  color:#0C1A1E;
  font-family:var(--font-title);
  font-weight:900;
  font-size:17px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
}
.brand-rail__name{
  writing-mode:vertical-rl;
  text-orientation:upright;
  font-family:var(--font-title);
  font-weight:800;
  font-size:17px;
  line-height:1.15;
  letter-spacing:.24em;
  color:var(--moon);
}
.brand-rail__tag{
  writing-mode:vertical-rl;
  text-orientation:upright;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.24em;
  padding:10px 5px;
  border:1px solid rgba(63,208,201,.5);
  border-radius:var(--pill);
  color:var(--cyan);
}

/* ---------- 右缘栏目列 ---------- */
.site-nav{
  position:fixed;
  top:var(--topbar-h);
  right:0;bottom:0;
  width:var(--nav-w);
  z-index:95;
  display:flex;
  align-items:flex-start;
  justify-content:flex-end;
  padding:28px 12px;
  background:var(--moon);
  border-left:1px solid var(--paper);
  overflow-y:auto;
}
.site-nav__list{
  width:100%;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.site-nav__link{
  display:block;
  padding:10px 14px;
  border-radius:var(--pill);
  border:1px solid #d5dedd;
  background:transparent;
  color:var(--rain-ink);
  font-size:14px;
  line-height:1.35;
  text-align:right;
  letter-spacing:.02em;
  transition:background-color .16s ease,border-color .16s ease,color .16s ease;
}
.site-nav__link:hover,
.site-nav__link:focus-visible{border-color:var(--mountain);color:var(--dai-ink);background:rgba(31,74,85,.06)}
.site-nav__link[aria-current="page"]{
  background:var(--orange);
  border-color:var(--orange);
  color:#0C1A1E;
  font-weight:700;
}

/* ---------- 移动遮罩（JS 创建） ---------- */
.nav-scrim{
  position:fixed;
  inset:0;
  z-index:92;
  background:rgba(12,26,30,.58);
  opacity:0;
  visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;
}
html.nav-open .nav-scrim{opacity:1;visibility:visible}
html.nav-open{overflow:hidden}

/* ---------- 滚动进度（JS 创建） ---------- */
.scroll-progress{
  position:fixed;
  top:0;left:0;
  width:100%;
  height:3px;
  z-index:120;
  background:var(--orange);
  transform:scaleX(0);
  transform-origin:0 50%;
  pointer-events:none;
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:clamp(64px,10vw,140px);
  background:var(--dai-ink);
  color:var(--moon);
}
.site-footer__cols{
  display:grid;
  grid-template-columns:1.05fr 1fr 1.35fr;
  border-top:1px solid var(--mountain);
}
.site-footer__seg{padding:clamp(32px,4vw,56px) clamp(22px,3vw,44px)}
.site-footer__seg--dark{background:var(--dai-ink);color:var(--moon)}
.site-footer__seg--light{background:var(--paper);color:var(--ink)}
.site-footer__seg + .site-footer__seg{border-left:1px solid var(--mountain)}

.site-footer__brand{
  font-family:var(--font-title);
  font-weight:900;
  font-size:clamp(22px,2.4vw,28px);
  line-height:1.2;
  letter-spacing:.04em;
  color:var(--moon);
}
.site-footer__sign{
  margin-top:10px;
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(242,245,244,.55);
}
.site-footer__rule{
  display:block;
  width:58px;height:6px;
  margin-top:26px;
  background:var(--orange);
  clip-path:polygon(0 0,100% 0,calc(100% - 9px) 100%,0 100%);
}

.site-footer__nav{
  display:flex;
  gap:clamp(24px,4vw,56px);
  align-items:flex-start;
}
.footer-list{display:flex;flex-direction:column;gap:2px}
.footer-list a{
  display:inline-block;
  font-size:14px;
  line-height:1.95;
  color:var(--rain-ink);
  transition:color .16s ease;
}
.footer-list a:hover,.footer-list a:focus-visible{color:var(--orange)}

.site-footer__contact{
  font-size:13px;
  line-height:2.05;
  color:rgba(242,245,244,.82);
}
.site-footer__contact p{display:flex;flex-wrap:wrap;gap:0 10px}
.footer-label{
  flex:0 0 auto;
  min-width:44px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--cyan);
}
.footer-value{
  font-family:var(--font-data);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  color:var(--moon);
  word-break:break-all;
}
.site-footer__note{
  margin-top:16px;
  font-size:12px;
  line-height:1.75;
  color:rgba(242,245,244,.5);
  max-width:46ch;
}
.site-footer__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  padding:18px clamp(22px,3vw,44px);
  background:var(--rain-ink);
  border-top:1px solid var(--mountain);
  font-size:12px;
  letter-spacing:.04em;
  color:rgba(242,245,244,.6);
}

/* ---------- 通用容器与排版 ---------- */
.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:var(--edge-pad);
  padding-right:var(--edge-pad);
}
.wrap--text{max-width:720px}
.section{padding-block:clamp(40px,6vw,84px)}

.display-title{
  font-family:var(--font-title);
  font-weight:900;
  font-size:clamp(32px,5.2vw,72px);
  line-height:1.05;
  letter-spacing:.005em;
  color:var(--dai-ink);
  margin-bottom:18px;
}
.display-title::after{
  content:"";
  display:block;
  width:clamp(48px,10vw,104px);
  height:8px;
  margin-top:20px;
  background:var(--orange);
  clip-path:polygon(0 0,100% 0,calc(100% - 12px) 100%,0 100%);
}

.eyebrow{
  display:inline-block;
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--stone);
}
.lede{
  font-size:clamp(16px,1.5vw,19px);
  line-height:1.8;
  color:var(--rain-ink);
  max-width:62ch;
}
.note{font-size:13px;line-height:1.7;color:var(--stone)}
.note--tiny{font-size:12px}
.rotate-note{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.28em;
  color:var(--stone);
}
.num{
  font-family:var(--font-data);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  letter-spacing:-.01em;
}
.score{
  font-family:var(--font-data);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  font-size:clamp(38px,7vw,64px);
  font-weight:700;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--dai-ink);
}
.divider{height:1px;border:0;margin:0;background:var(--mountain);opacity:.35}

/* ---------- 按钮与标签 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  cursor:pointer;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease;
}
.btn--primary{background:var(--orange);color:#0C1A1E;border-color:var(--orange)}
.btn--primary:hover{background:#ff8347;border-color:#ff8347}
.btn--ghost{background:transparent;border-color:var(--mountain);color:var(--dai-ink)}
.btn--ghost:hover{background:var(--dai-ink);border-color:var(--dai-ink);color:var(--moon)}
.btn--on-dark{background:transparent;border-color:rgba(242,245,244,.34);color:var(--moon)}
.btn--on-dark:hover{background:var(--moon);border-color:var(--moon);color:var(--dai-ink)}

.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:var(--pill);
  border:1px solid var(--paper);
  background:#fff;
  font-size:12px;
  line-height:1.5;
  color:var(--mountain);
}
.chip--live{border-color:var(--orange);color:var(--orange);background:rgba(255,106,31,.07)}

/* ---------- 卡片与网格 ---------- */
.card{
  background:#fff;
  border:1px solid var(--paper);
  border-radius:var(--radius-card);
  padding:clamp(20px,3vw,32px);
}
.card--dark{
  background:var(--rain-ink);
  border-color:transparent;
  color:var(--moon);
}
.grid-2,.grid-3{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(16px,2.4vw,32px);
}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.stack>*+*{margin-top:var(--stack-gap,16px)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.04em;
  color:var(--stone);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--stone)}
.breadcrumb a{color:var(--mountain);transition:color .16s ease}
.breadcrumb a:hover,.breadcrumb a:focus-visible{color:var(--orange)}

/* ---------- 图片容器基础（页面阶段放置占位） ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  background:var(--rain-ink);
  isolation:isolate;
}
.media-frame img{
  width:100%;height:100%;
  object-fit:cover;
  filter:saturate(.62) contrast(1.06) brightness(.92);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  background:linear-gradient(180deg,rgba(16,36,43,.45),rgba(16,36,43,.78));
  pointer-events:none;
}
.media-frame__grid{
  position:absolute;
  inset:0;
  z-index:2;
  pointer-events:none;
  background-image:
    linear-gradient(var(--mist) 1px,transparent 1px),
    linear-gradient(90deg,var(--mist) 1px,transparent 1px);
  background-size:48px 48px;
}
.media-frame--ratio-16x9{aspect-ratio:16/9}
.media-frame--ratio-4x3{aspect-ratio:4/3}
.media-frame--ratio-3x2{aspect-ratio:3/2}
.media-frame--ratio-1x1{aspect-ratio:1/1}

/* ---------- 进场显现（由 JS 打开开关） ---------- */
html.js-reveal [data-reveal]{
  opacity:0;
  transform:translateY(14px);
}
html.js-reveal [data-reveal].is-revealed{
  opacity:1;
  transform:none;
  transition:opacity .5s ease,transform .5s ease;
}

/* ============================================================
   响应式
   ============================================================ */

@media (max-width:1079px){
  :root{--nav-w:84px}
  .site-nav{padding:20px 8px}
  .site-nav__link{
    font-size:12px;
    padding:9px 4px;
    text-align:center;
    line-height:1.35;
    border-radius:14px;
  }
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:899px){
  .site-footer__cols{grid-template-columns:1fr}
  .site-footer__seg + .site-footer__seg{
    border-left:0;
    border-top:1px solid var(--mountain);
  }
  .site-footer__seg--light{border-top-color:#cfd8d7}
}

@media (max-width:767px){
  body{padding:88px 0 0}

  .nav-toggle{display:inline-flex}

  .topbar__meta{display:none}

  .brand-rail{
    top:var(--topbar-h);
    left:0;right:0;bottom:auto;
    width:auto;height:52px;
    flex-direction:row;
    align-items:center;
    justify-content:flex-start;
    gap:12px;
    padding:0 16px;
    border-right:0;
    border-bottom:1px solid var(--mountain);
  }
  .brand-rail__mark{width:28px;height:28px;border-radius:9px;font-size:14px}
  .brand-rail__name{writing-mode:horizontal-tb;font-size:16px;letter-spacing:.14em}
  .brand-rail__tag{writing-mode:horizontal-tb;padding:3px 10px;letter-spacing:.18em}

  .site-nav{
    top:88px;
    width:min(80vw,300px);
    padding:22px 16px;
    justify-content:flex-start;
    background:var(--dai-ink);
    border-left:1px solid var(--mountain);
    box-shadow:-18px 0 44px rgba(12,26,30,.42);
    transform:translateX(103%);
    transition:transform .22s ease;
  }
  .site-nav[data-open]{transform:translateX(0)}
  .site-nav__list{gap:6px}
  .site-nav__link{
    font-size:16px;
    text-align:left;
    padding:13px 18px;
    color:var(--moon);
    border-color:rgba(242,245,244,.16);
    border-radius:var(--pill);
  }
  .site-nav__link:hover,
  .site-nav__link:focus-visible{border-color:var(--cyan);color:var(--cyan);background:rgba(63,208,201,.08)}
  .site-nav__link[aria-current="page"]{color:#0C1A1E}

  .nav-scrim{display:block}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .site-footer__nav{gap:32px}
  .site-footer__base{justify-content:flex-start}
}

@media (min-width:768px){
  .nav-scrim{display:none}
}

/* ---------- 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;
  }
  html.js-reveal [data-reveal]{
    opacity:1 !important;
    transform:none !important;
  }
}