/* ============================================================
   绿茵体育 — /assets/site.css
   共享外壳：设计令牌 / 排版 / 页头 / 导航 / 页脚 / 基础组件
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --grass:#1F7A4D;
  --grass-deep:#14503A;
  --ink:#0B1A2B;
  --cyan:#2EE6B0;
  --flare:#FFD34D;
  --clay:#C7633A;
  --moss:#6E8B5A;
  --slate:#55636E;
  --cream:#F4F1E8;
  --line:#E6E3D8;
  --white:#FFFFFF;

  --bg:var(--cream);
  --text:var(--ink);
  --text-muted:var(--slate);

  --font-display:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-body:var(--font-display);
  --font-serif:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --maxw:1280px;
  --gutter:24px;
  --gap:24px;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --header-h:88px;
  --header-h-min:64px;
  --reveal-delay:0ms;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:104px;
}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;-webkit-tap-highlight-color:transparent}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* ---------- 3. 基础排版 ---------- */
body{
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-0.02em;
  line-height:1.15;
}
p{max-width:46em}
strong{font-weight:800}
.mono{font-family:var(--font-mono);font-size:0.94em;letter-spacing:0.02em}
.editorial{
  font-family:var(--font-serif);
  font-weight:600;
  font-size:19px;
  line-height:1.9;
  letter-spacing:0.01em;
}

/* ---------- 4. 布局骨架 ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--gutter);
}
.container--narrow{max-width:760px}
.section{padding:76px 0}
.section--tight{padding:44px 0}
.section--dark{
  background:var(--ink);
  color:var(--cream);
}
.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4{color:var(--white)}
.section--dark p{color:rgba(244,241,232,.82)}

.grid--12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-6{grid-column:span 6}
.col-8{grid-column:span 8}
.col-12{grid-column:span 12}

.rule{
  width:56px;height:2px;border-radius:2px;
  background:var(--clay);
  margin:0 0 22px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:0.16em;font-weight:700;
  color:var(--grass);
}
.section--dark .eyebrow{color:var(--cyan)}

.turf{position:relative;isolation:isolate}
.turf::before{
  content:"";position:absolute;inset:0;z-index:-1;
  border-radius:inherit;pointer-events:none;
  background-image:repeating-linear-gradient(
    90deg,
    rgba(255,255,255,0.045) 0 48px,
    rgba(0,0,0,0.08) 48px 96px
  );
}

/* ---------- 5. 页头 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:var(--header-h);
  background-image:linear-gradient(180deg,rgba(11,26,43,0.88) 0%,rgba(11,26,43,0.52) 58%,rgba(11,26,43,0) 100%);
  background-color:transparent;
  transition:height .24s ease-out,background-color .24s ease-out,box-shadow .24s ease-out;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--cyan) 0%,rgba(46,230,176,0) 62%);
  opacity:0;transition:opacity .24s ease-out;
}
.site-header[data-scrolled="true"]{
  height:var(--header-h-min);
  background-color:var(--grass);
  background-image:none;
  box-shadow:0 12px 30px rgba(11,26,43,0.28);
}
.site-header[data-scrolled="true"]::after{opacity:1}

.skip-link{
  position:absolute;left:var(--gutter);top:10px;z-index:120;
  padding:10px 18px;border-radius:999px;
  background:var(--flare);color:var(--ink);
  font-size:14px;font-weight:800;text-decoration:none;
  transform:translateY(-220%);
  transition:transform .2s ease-out;
}
.skip-link:focus{transform:translateY(0)}

.header-inner{
  position:relative;
  height:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--gutter);
  display:flex;
  align-items:center;
  gap:20px;
}

/* 品牌 */
.brand{
  flex:0 0 auto;
  display:flex;align-items:center;gap:12px;
  text-decoration:none;color:var(--white);
}
.brand-badge{
  flex:0 0 auto;
  width:38px;height:38px;border-radius:13px;
  display:grid;place-items:center;
  background:var(--flare);color:var(--ink);
  font-family:var(--font-mono);
  font-size:14px;font-weight:700;letter-spacing:-0.04em;
  transition:width .24s ease-out,height .24s ease-out,border-radius .24s ease-out;
}
.site-header[data-scrolled="true"] .brand-badge{width:32px;height:32px;border-radius:11px;font-size:12.5px}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-mark{
  font-family:var(--font-display);
  font-size:19px;font-weight:900;letter-spacing:0.02em;
  transition:font-size .24s ease-out;
}
.site-header[data-scrolled="true"] .brand-mark{font-size:17.5px}
.brand-tagline{
  margin-top:3px;
  font-size:11.5px;letter-spacing:0.05em;
  color:rgba(255,255,255,0.72);
}

/* 主导航 */
.site-nav{
  flex:1 1 auto;
  min-width:0;
  display:flex;
  align-items:center;
  justify-content:center;
}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{flex:0 0 auto}
.nav-link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:6px;
  padding:9px 13px;
  border-radius:999px;
  font-size:15px;font-weight:700;
  color:rgba(255,255,255,0.84);
  text-decoration:none;
  white-space:nowrap;
  transition:background-color .18s ease-out,color .18s ease-out;
}
.nav-num{
  font-family:var(--font-mono);
  font-size:11px;font-weight:700;letter-spacing:0.04em;
  color:var(--flare);
  opacity:0.9;
}
.nav-link:hover{background:rgba(255,255,255,0.14);color:var(--white)}
.nav-link[aria-current="page"]{color:var(--white);background:rgba(46,230,176,0.14)}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  border-radius:2px;background:var(--cyan);
}

/* 页头次级入口 */
.header-utility{
  flex:0 0 auto;
  display:flex;align-items:center;gap:16px;
}
.utility-link{
  font-size:14px;font-weight:700;
  color:rgba(255,255,255,0.8);
  text-decoration:none;
  padding:4px 0;
  border-bottom:1px dashed rgba(255,255,255,0.38);
  transition:color .18s ease-out,border-color .18s ease-out;
}
.utility-link:hover{color:var(--white);border-bottom-color:var(--cyan)}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  flex:0 0 auto;
  position:relative;
  width:44px;height:44px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,0.34);
  background:rgba(255,255,255,0.06);
  transition:background-color .18s ease-out,border-color .18s ease-out;
}
.nav-toggle:hover{background:rgba(255,255,255,0.14);border-color:rgba(255,255,255,0.6)}
.nav-toggle-bars{
  position:absolute;inset:0;margin:auto;
  width:20px;height:12px;
}
.nav-toggle-bars span{
  position:absolute;left:0;right:0;height:2px;border-radius:2px;
  background:var(--white);
  transition:transform .2s ease-out,opacity .2s ease-out;
}
.nav-toggle-bars span:nth-child(1){top:0}
.nav-toggle-bars span:nth-child(2){top:5px}
.nav-toggle-bars span:nth-child(3){top:10px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.nav-panel-cta{display:none}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:80px;
  padding:64px 0 0;
  background:var(--ink);
  color:var(--cream);
  border-radius:32px 32px 0 0;
  overflow:hidden;
  isolation:isolate;
}
.site-footer::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background-image:repeating-linear-gradient(
    90deg,
    rgba(46,230,176,0.055) 0 2px,
    rgba(46,230,176,0) 2px 104px
  );
}
.footer-inner{
  position:relative;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--gutter);
}
.footer-top{
  display:grid;
  grid-template-columns:1.05fr 1.7fr;
  gap:56px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(244,241,232,0.14);
}
.footer-brand-mark{
  display:inline-block;
  font-family:var(--font-display);
  font-size:28px;font-weight:900;letter-spacing:-0.01em;
  color:var(--white);
  text-decoration:none;
  transition:color .18s ease-out;
}
.footer-brand-mark:hover{color:var(--cyan)}
.footer-brand-note{
  margin:16px 0 0;
  max-width:34ch;
  font-size:14.5px;line-height:1.75;
  color:rgba(244,241,232,0.7);
}
.footer-columns{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:28px;
}
.footer-col-title{
  display:flex;align-items:baseline;gap:8px;
  margin:0 0 16px;
  font-size:13px;font-weight:800;letter-spacing:0.14em;
  color:var(--flare);
}
.footer-col-num{
  font-family:var(--font-mono);
  font-size:11px;font-weight:700;letter-spacing:0.06em;
  color:var(--clay);
}
.footer-link-list{display:flex;flex-direction:column;gap:10px}
.footer-link{
  font-size:14.5px;
  color:rgba(244,241,232,0.82);
  text-decoration:none;
  transition:color .18s ease-out;
}
.footer-link:hover{color:var(--cyan)}

.footer-contact{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:22px 32px;
  padding:34px 0;
  border-bottom:1px solid rgba(244,241,232,0.14);
}
.footer-contact-item{display:flex;flex-direction:column;gap:6px;min-width:0}
.footer-contact-item--wide{grid-column:1 / -1}
.footer-contact-label{
  font-family:var(--font-mono);
  font-size:11px;font-weight:700;letter-spacing:0.14em;
  color:var(--moss);
}
.footer-contact-value{
  font-size:14.5px;line-height:1.7;
  color:var(--cream);
  word-break:break-word;
}
.footer-base{
  position:relative;
  max-width:var(--maxw);
  margin:0 auto;
  padding:22px var(--gutter) 30px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  font-family:var(--font-mono);
  font-size:12.5px;letter-spacing:0.03em;
  color:rgba(244,241,232,0.6);
}
.footer-legal{color:rgba(244,241,232,0.6)}
.footer-copy{color:rgba(244,241,232,0.6)}

/* ---------- 7. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border-radius:999px;
  border:2px solid transparent;
  font-family:var(--font-display);
  font-size:15px;font-weight:800;letter-spacing:0.01em;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out;
}
.btn--sm{padding:9px 16px;font-size:14px}
.btn--cyan{background:var(--cyan);color:var(--ink)}
.btn--cyan:hover{background:var(--flare);color:var(--ink)}
.btn--primary{background:var(--grass);color:var(--white)}
.btn--primary:hover{background:var(--grass-deep)}
.btn--ghost{border-color:rgba(255,255,255,0.45);color:var(--white)}
.btn--ghost:hover{background:rgba(255,255,255,0.14);border-color:var(--white)}

/* ---------- 8. 卡片 / 标签 / 记分牌 ---------- */
.card{
  position:relative;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:24px;
}
.card--dark{
  background:rgba(255,255,255,0.05);
  border-color:rgba(244,241,232,0.16);
  color:var(--cream);
}
.card--score{
  display:flex;flex-direction:column;gap:12px;
  border-radius:var(--radius-lg);
}
.score{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:38px;
  line-height:1;
  letter-spacing:-0.03em;
  color:var(--grass);
}
.card--dark .score{color:var(--flare)}
.num-chip{
  display:inline-grid;place-items:center;
  width:34px;height:34px;border-radius:var(--radius-sm);
  background:var(--clay);color:var(--white);
  font-family:var(--font-mono);
  font-size:13px;font-weight:700;letter-spacing:-0.02em;
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:12.5px;font-weight:700;letter-spacing:0.04em;
  background:var(--line);color:var(--slate);
}
.tag--lime{background:var(--flare);color:var(--ink)}
.tag--cyan{background:var(--cyan);color:var(--ink)}
.tag--grass{background:rgba(31,122,77,0.12);color:var(--grass)}
.tag--dark{background:rgba(244,241,232,0.12);color:var(--cream)}

/* ---------- 9. 图片容器 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  background:var(--ink);
  aspect-ratio:3/2;
  isolation:isolate;
}
.media-frame img{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(11,26,43,0) 48%,rgba(11,26,43,0.58) 100%);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--photo{aspect-ratio:3/2}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-frame--bare::after{display:none}

/* ---------- 10. 正文与面包屑 ---------- */
.prose{
  max-width:680px;
  font-size:17px;
  line-height:1.85;
  color:#2A3540;
}
.prose h2{font-size:28px;margin:1.5em 0 .55em;color:var(--ink)}
.prose h3{font-size:20px;margin:1.3em 0 .5em;color:var(--ink)}
.prose p{margin:0 0 1.05em;max-width:none}
.prose ul{margin:0 0 1.2em}
.prose li{position:relative;padding-left:22px;margin-bottom:0.5em}
.prose li::before{
  content:"";position:absolute;left:4px;top:0.72em;
  width:8px;height:8px;border-radius:2px;background:var(--grass);
}
.prose a{
  color:var(--grass);
  text-decoration:underline;
  text-decoration-thickness:2px;
  text-underline-offset:3px;
}
.prose a:hover{color:var(--grass-deep)}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin:0 0 22px;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:0.06em;
  color:var(--slate);
}
.breadcrumb a{
  color:var(--grass);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:border-color .18s ease-out;
}
.breadcrumb a:hover{border-bottom-color:var(--grass)}
.breadcrumb-sep{color:var(--line)}
.section--dark .breadcrumb{color:rgba(244,241,232,0.6)}
.section--dark .breadcrumb a{color:var(--cyan)}

/* ---------- 11. 显现与目录高亮 ---------- */
html[data-js="on"] [data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .5s ease-out,transform .5s ease-out;
  transition-delay:var(--reveal-delay,0ms);
}
html[data-js="on"] [data-reveal].is-visible{
  opacity:1;
  transform:none;
}
[data-toc] a{
  display:block;
  padding:8px 12px;
  border-radius:999px;
  color:var(--slate);
  text-decoration:none;
  font-size:14.5px;
  transition:background-color .12s ease-in,color .12s ease-in;
}
[data-toc] a:hover{background:rgba(31,122,77,0.08);color:var(--grass)}
[data-toc] a.is-current{
  background:rgba(46,230,176,0.2);
  color:var(--grass-deep);
  font-weight:700;
}

/* ---------- 12. 媒体查询：平板 ---------- */
@media (max-width:1100px){
  :root{--header-h:76px;--header-h-min:64px}
  .brand-tagline{display:none}
  .nav-toggle{display:block}

  .site-nav{
    position:fixed;
    inset:0;
    z-index:70;
    display:flex;
    flex-direction:column;
    justify-content:center;
    padding:104px var(--gutter) 48px;
    background-color:var(--ink);
    background-image:radial-gradient(circle at 84% 10%,rgba(46,230,176,0.2) 0%,rgba(46,230,176,0) 52%);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .24s ease-out,transform .24s ease-out,visibility 0s linear .24s;
    overflow-y:auto;
  }
  .site-nav[data-open="true"]{
    opacity:1;
    visibility:visible;
    transform:none;
    transition:opacity .24s ease-out,transform .24s ease-out,visibility 0s linear 0s;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    width:100%;
    max-width:520px;
    margin:0 auto;
  }
  .nav-item{width:100%}
  .nav-link{
    width:100%;
    justify-content:flex-start;
    padding:15px 10px;
    border-radius:0;
    font-size:26px;
    font-weight:800;
    border-bottom:1px solid rgba(244,241,232,0.12);
  }
  .nav-link:hover{background:rgba(46,230,176,0.08)}
  .nav-num{font-size:13px}
  .nav-link[aria-current="page"]{background:transparent}
  .nav-link[aria-current="page"]::after{
    left:10px;right:auto;bottom:8px;
    width:30px;height:3px;
  }
  body[data-nav-open="true"]{overflow:hidden}
  body[data-nav-open="true"] .site-header{
    background-color:var(--ink);
    background-image:none;
    box-shadow:none;
  }
  body[data-nav-open="true"] .site-header::after{opacity:0}
}

/* ---------- 13. 媒体查询：手机 ---------- */
@media (max-width:720px){
  :root{--gutter:20px;--gap:18px}
  body{font-size:16px}
  .section{padding:52px 0}
  .section--tight{padding:34px 0}
  .header-utility{display:none}
  .nav-panel-cta{
    display:inline-flex;
    align-self:center;
    margin-top:34px;
  }
  .grid--12{gap:18px}
  .col-3,.col-4{grid-column:span 12}
  .col-6,.col-8{grid-column:span 12}
  .footer-top{grid-template-columns:1fr;gap:38px}
  .footer-columns{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 20px}
  .footer-brand-mark{font-size:24px}
  .site-footer{border-radius:24px 24px 0 0;padding-top:48px}
  .prose h2{font-size:24px}
  .nav-link{font-size:22px}
}

@media (max-width:420px){
  .footer-columns{grid-template-columns:1fr}
  .footer-base{font-size:11.5px}
}

/* ---------- 14. 降低动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
    scroll-behavior:auto !important;
  }
  html{scroll-behavior:auto}
  html[data-js="on"] [data-reveal]{opacity:1;transform:none}
}