/* ============================================================
   DB赛场 — Site Kit 共享样式（/assets/site.css）
   夜间赛场指挥中心 / Bento 战术板 / 复古赛刊色
   ============================================================ */

*,*::before,*::after{box-sizing:border-box;}

:root{
  --night:#0B1512;
  --board:#11221C;
  --paper:#F3EBDD;
  --lime:#C8FF4D;
  --amber:#FF7A2F;
  --press:#E0392B;
  --line:#2E4A3F;
  --muted:#8FA79B;
  --brown:#6C4A28;
  --white:#FFFFFF;

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

  --fs-12:12px;
  --fs-14:14px;
  --fs-16:16px;
  --fs-20:20px;
  --fs-28:28px;
  --fs-44:44px;
  --fs-72:72px;

  --wrap:1220px;
  --gutter:clamp(16px,3.2vw,40px);
  --gap:16px;

  --progress-tone:var(--lime);
  --ease:.2s ease;
}

html{-webkit-text-size-adjust:100%;}
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth;}
}

body{
  margin:0;
  background-color:var(--night);
  background-image:repeating-linear-gradient(90deg,rgba(46,74,63,.14) 0 1px,transparent 1px 120px);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:var(--fs-16);
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-display);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.12;
  text-wrap:balance;
}
h1{font-size:clamp(32px,5.4vw,64px);}
h2{font-size:clamp(24px,3.6vw,40px);}
h3{font-size:clamp(20px,2.4vw,26px);}
h4{font-size:var(--fs-20);}

p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
dl,dd{margin:0;}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
table{border-collapse:collapse;}

::selection{background:var(--lime);color:var(--night);}

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

.visually-hidden{
  position:absolute;
  width:1px;height:1px;
  margin:-1px;padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

/* ---------- 跳转链 ---------- */
.skip-link{
  position:fixed;
  top:10px;left:10px;
  z-index:300;
  transform:translateY(-180%);
  padding:10px 16px;
  background:var(--lime);
  color:var(--night);
  border:1px solid var(--night);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  transition:transform .18s ease;
}
.skip-link:focus{transform:translateY(0);}

/* ---------- 命令栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(11,21,18,.95);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}

.header-inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(14px,2.4vw,32px);
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:13px var(--gutter);
  min-height:68px;
  transition:min-height .22s ease,padding .22s ease;
}
.site-header.is-condensed .header-inner{
  min-height:52px;
  padding-top:7px;
  padding-bottom:7px;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:none;
}
.brand-mark{
  display:inline-block;
  padding:1px 11px 1px 8px;
  background:var(--lime);
  color:var(--night);
  font-family:var(--font-display);
  font-size:22px;
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.04em;
  clip-path:polygon(0 0,100% 0,calc(100% - 9px) 100%,0 100%);
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.15;
}
.brand-name{
  font-family:var(--font-display);
  font-size:19px;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--paper);
}
.brand-meta{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--muted);
  white-space:nowrap;
  max-height:16px;
  overflow:hidden;
  transition:max-height .22s ease,opacity .22s ease;
}
.site-header.is-condensed .brand-meta{
  max-height:0;
  opacity:0;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 13px;
  border:1px solid var(--line);
  background:rgba(17,34,28,.9);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  line-height:1;
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime);}
.nav-toggle-bars{
  display:inline-flex;
  flex-direction:column;
  gap:3px;
  width:16px;
}
.nav-toggle-bars i{
  display:block;
  height:2px;
  background:var(--lime);
  transition:transform .2s ease,opacity .2s ease;
}
.site-header[data-open] .nav-toggle-bars i:nth-child(1){transform:translateY(5px) rotate(45deg);}
.site-header[data-open] .nav-toggle-bars i:nth-child(2){opacity:0;}
.site-header[data-open] .nav-toggle-bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

.header-panel{
  display:flex;
  flex:1;
  align-items:center;
  justify-content:space-between;
  gap:clamp(12px,2vw,28px);
  min-width:0;
}

.site-nav{min-width:0;}
.nav-list{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
}
.nav-item{display:flex;align-items:center;min-width:0;}
.nav-item + .nav-item::before{
  content:"–";
  padding:0 8px;
  color:var(--line);
  font-family:var(--font-mono);
  font-size:13px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 1px;
  font-size:15px;
  font-weight:500;
  letter-spacing:.01em;
  color:rgba(243,235,221,.82);
  white-space:nowrap;
  transition:color var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-3px;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--lime);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link[aria-current="page"]{color:var(--lime);}
.nav-link[aria-current="page"]::after{transform:scaleX(1);}

.header-actions{
  display:flex;
  align-items:center;
  gap:8px;
  flex:none;
}
.section-readout{
  padding-left:12px;
  border-left:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--muted);
  white-space:nowrap;
}
.header-actions .btn{
  padding:10px 14px;
  font-size:11px;
}

.read-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  overflow:hidden;
  background:rgba(46,74,63,.55);
}
.read-progress-bar{
  display:block;
  height:100%;
  width:100%;
  background:var(--progress-tone);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .1s linear,background-color .45s ease;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,96px);
  background:var(--board);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:linear-gradient(90deg,var(--lime) 0 46%,var(--amber) 46% 78%,var(--press) 78% 100%);
}
.footer-inner{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:clamp(32px,5vw,58px) var(--gutter) 18px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.35fr 1fr 1fr 1.15fr;
  gap:clamp(20px,3vw,40px);
}
.footer-col{min-width:0;}
.footer-col--brand{
  border-right:1px dashed rgba(46,74,63,.85);
  padding-right:clamp(12px,2vw,28px);
}
.footer-brand{
  display:inline-block;
  font-family:var(--font-display);
  font-size:26px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--paper);
  border-bottom:2px solid var(--lime);
}
.footer-brand:hover{color:var(--lime);}
.footer-tagline{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(243,235,221,.86);
}
.footer-index{
  margin-top:4px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--muted);
}
.footer-heading{
  display:flex;
  align-items:baseline;
  gap:8px;
  margin-bottom:14px;
  padding-bottom:9px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.16em;
  line-height:1.4;
  color:var(--muted);
}
.footer-heading span{color:var(--lime);}
.footer-list{margin-top:6px;}
.footer-list li + li{margin-top:9px;}
.footer-link{
  display:inline-block;
  font-size:14px;
  color:rgba(243,235,221,.86);
  transition:color var(--ease),transform var(--ease);
}
.footer-link::before{
  content:"›";
  margin-right:6px;
  color:var(--line);
  font-family:var(--font-mono);
}
.footer-link:hover,.footer-link:focus-visible{
  color:var(--lime);
  transform:translateX(2px);
}
.footer-contact{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:8px 12px;
  font-size:13px;
}
.footer-contact-term{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--muted);
  padding-top:3px;
}
.footer-contact-value{
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:1.6;
  word-break:break-word;
}
.footer-note{
  margin-top:14px;
  padding-left:10px;
  border-left:2px solid var(--brown);
  font-size:12.5px;
  line-height:1.7;
  color:var(--muted);
}
.footer-icp{
  margin-top:16px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--paper);
}
.footer-icp-key{
  margin-right:7px;
  padding:1px 6px;
  background:var(--press);
  color:var(--white);
  font-size:10.5px;
  letter-spacing:.12em;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 18px;
  margin-top:clamp(24px,4vw,44px);
  padding-top:16px;
  border-top:1px solid var(--line);
}
.footer-copy{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--muted);
}
.footer-bottom .footer-copy:last-child{color:rgba(243,235,221,.9);}

/* ---------- 通用容器与栅格 ---------- */
.container{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding-left:var(--gutter);
  padding-right:var(--gutter);
}
.grid{
  display:grid;
  gap:var(--gap);
}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr));}
.col-3{grid-column:span 3;}
.col-4{grid-column:span 4;}
.col-5{grid-column:span 5;}
.col-6{grid-column:span 6;}
.col-7{grid-column:span 7;}
.col-8{grid-column:span 8;}
.col-12{grid-column:span 12;}

.stack > * + *{margin-top:var(--gap);}
.rule{
  height:1px;
  border:0;
  margin:clamp(20px,3vw,32px) 0;
  background:repeating-linear-gradient(90deg,var(--line) 0 7px,transparent 7px 14px);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:11px 17px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.1em;
  line-height:1;
  text-transform:uppercase;
  white-space:nowrap;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform .12s ease;
}
.btn:hover{border-color:var(--lime);color:var(--lime);}
.btn:active{transform:translateY(1px);}
.btn--primary{
  background:var(--lime);
  border-color:var(--lime);
  color:var(--night);
  font-weight:700;
}
.btn--primary:hover{
  background:var(--paper);
  border-color:var(--paper);
  color:var(--night);
}
.btn--accent{
  background:var(--amber);
  border-color:var(--amber);
  color:var(--night);
  font-weight:700;
}
.btn--accent:hover{
  background:var(--paper);
  border-color:var(--paper);
  color:var(--night);
}
.btn--ghost{color:rgba(243,235,221,.86);}
.btn--ghost:hover{
  background:rgba(200,255,77,.09);
  color:var(--lime);
}

/* ---------- 面包屑 ---------- */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--muted);
}
.breadcrumbs li{
  display:flex;
  align-items:center;
  gap:8px;
}
.breadcrumbs li + li::before{
  content:"/";
  color:var(--line);
}
.breadcrumbs a{color:var(--muted);transition:color var(--ease);}
.breadcrumbs a:hover,.breadcrumbs a:focus-visible{color:var(--lime);}
.breadcrumbs [aria-current="page"]{color:var(--paper);}

/* ---------- 引题与章节索引 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  line-height:1.4;
  text-transform:uppercase;
  color:var(--lime);
}
.eyebrow::before{
  content:"";
  width:18px;
  height:1px;
  background:currentColor;
}
.section-index{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:clamp(18px,3vw,28px);
  padding:8px 12px;
  border:1px solid var(--line);
  background:linear-gradient(90deg,rgba(200,255,77,.07),transparent 62%);
}
.section-index-num{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--lime);
  white-space:nowrap;
}
.section-index-title{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  white-space:nowrap;
}
.section-index-rule{
  flex:1;
  height:1px;
  min-width:24px;
  background:repeating-linear-gradient(90deg,var(--line) 0 6px,transparent 6px 12px);
}

/* ---------- 板块 ---------- */
.panel{
  position:relative;
  padding:clamp(16px,2.4vw,26px);
  border:1px solid var(--line);
  background:var(--board);
  box-shadow:inset 0 1px 0 rgba(243,235,221,.03);
}
.panel--focus{
  border-color:rgba(200,255,77,.55);
  box-shadow:inset 0 0 0 1px rgba(200,255,77,.12),0 14px 34px rgba(0,0,0,.32);
}
.panel--paper{
  background:var(--paper);
  border-color:var(--paper);
  color:var(--night);
}
.panel--paper .stat-label{color:var(--brown);}

/* ---------- 数据列 ---------- */
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:0;
}
.stat{
  display:flex;
  flex-direction:column;
  gap:3px;
}
.stat-value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(24px,3vw,36px);
  font-weight:700;
  line-height:1;
  color:var(--paper);
}
.stat-value--lime{color:var(--lime);}
.stat-value--amber{color:var(--amber);}
.stat-value--press{color:var(--press);}
.stat-label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 8px;
  border:1px solid var(--line);
  background:rgba(46,74,63,.2);
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  line-height:1.5;
  text-transform:uppercase;
}
.tag--press{background:var(--press);border-color:var(--press);color:var(--white);}
.tag--lime{background:var(--lime);border-color:var(--lime);color:var(--night);}
.tag--amber{background:var(--amber);border-color:var(--amber);color:var(--night);}

/* ---------- 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16 / 9;
  border:1px solid var(--line);
  background-color:var(--board);
  background-image:
    repeating-linear-gradient(135deg,rgba(46,74,63,.5) 0 1px,transparent 1px 14px),
    linear-gradient(160deg,rgba(200,255,77,.06),transparent 55%),
    linear-gradient(0deg,rgba(11,21,18,.9),rgba(17,34,28,.9));
}
.media-frame--wide{aspect-ratio:21 / 9;}
.media-frame--portrait{aspect-ratio:4 / 5;}
.media-frame--square{aspect-ratio:1 / 1;}
.media-frame__img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:9px 12px;
  border-top:1px solid rgba(46,74,63,.9);
  background:rgba(11,21,18,.82);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  line-height:1.5;
  color:var(--muted);
}

/* ---------- 正文排版 ---------- */
.prose p{
  max-width:38em;
  color:rgba(243,235,221,.9);
}
.prose p + p{margin-top:1.05em;}
.prose strong{color:var(--paper);font-weight:700;}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .section-readout{display:none;}
}

@media (max-width:960px){
  .nav-toggle{display:inline-flex;}
  .header-inner{
    justify-content:space-between;
    min-height:60px;
  }
  .header-panel{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:18px;
    padding:16px var(--gutter) 22px;
    background:var(--board);
    border-bottom:1px solid var(--line);
    box-shadow:0 22px 44px rgba(0,0,0,.5);
  }
  .site-header[data-open] .header-panel{display:flex;}
  .header-panel .nav-list{
    flex-direction:column;
    align-items:stretch;
  }
  .nav-item{
    width:100%;
    border-bottom:1px solid var(--line);
  }
  .nav-item + .nav-item::before{display:none;}
  .nav-link{
    display:block;
    width:100%;
    padding:13px 2px;
    font-size:16px;
  }
  .nav-link::after{display:none;}
  .nav-link[aria-current="page"]{
    padding-left:18px;
    background:linear-gradient(90deg,rgba(200,255,77,.12),transparent 70%);
  }
  .nav-link[aria-current="page"]::before{
    content:"▸";
    position:absolute;
    left:0;
    top:50%;
    transform:translateY(-50%);
    color:var(--lime);
    font-size:12px;
  }
  .header-actions{justify-content:flex-start;gap:10px;}
  .header-actions .btn{flex:1;padding:12px 14px;font-size:12px;}

  .footer-top{grid-template-columns:1fr 1fr;}
  .footer-col--brand{
    grid-column:1 / -1;
    border-right:0;
    border-bottom:1px dashed rgba(46,74,63,.85);
    padding-right:0;
    padding-bottom:20px;
  }

  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr));}
  .col-3,.col-4{grid-column:span 3;}
  .col-5,.col-6,.col-7,.col-8{grid-column:span 6;}
}

@media (max-width:620px){
  .brand-meta{display:none;}
  .brand-name{font-size:17px;}
  .site-header.is-condensed .header-inner{min-height:52px;}

  .footer-top{grid-template-columns:1fr;}
  .footer-col{border-bottom:1px dashed rgba(46,74,63,.5);padding-bottom:18px;}
  .footer-col:last-child{border-bottom:0;padding-bottom:0;}
  .footer-contact{grid-template-columns:1fr;}
  .footer-contact-term{padding-top:0;}
  .footer-contact-value{margin-bottom:6px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}

  .grid--12{grid-template-columns:repeat(2,minmax(0,1fr));}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-12{grid-column:span 2;}
  .section-index{flex-wrap:wrap;}
  .section-index-title{white-space:normal;}
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .nav-link:hover::after,
  .nav-link[aria-current="page"]::after{transform:scaleX(1);}
}