/* ============================================================
   /assets/site.css — 安博赛事 共享外壳与基础组件
   夜间赛场指挥中心 / 技术蓝图层 / 暖纸与深墨体系
   ============================================================ */

:root{
  /* 色板 */
  --ink-900:#06110D;
  --ink-800:#0B1A15;
  --ink-700:#132A22;
  --line:#244A3D;
  --lime:#C6FF4A;
  --lime-bright:#DBFF86;
  --lime-soft:rgba(198,255,74,.10);
  --orange:#FF8A3D;
  --orange-soft:rgba(255,138,61,.10);
  --slate:#7C9DB8;
  --paper:#E6F1EC;
  --muted:#8FA89B;
  --cream:#E9DFC8;

  /* 尺度 */
  --shell-max:1200px;
  --gutter:clamp(16px,4vw,48px);
  --radius:2px;
  --rail-h:36px;

  /* 字体 */
  --font-head:"Noto Sans SC","Source Han Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  /* 动效 */
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:.2s;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100%;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:clamp(15.5px,1.05vw,17px);
  line-height:1.85;
  font-weight:400;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(120% 72% at 50% -14%, rgba(198,255,74,.09), transparent 62%),
    linear-gradient(to right, rgba(36,74,61,.40) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36,74,61,.28) 1px, transparent 1px);
  background-size:auto, 120px 120px, 120px 120px;
  background-position:center top, center top, center top;
  background-repeat:no-repeat, repeat, repeat;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video,canvas{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:var(--radius)}
::selection{background:var(--lime);color:var(--ink-900)}

/* ---------- 中文排版与标题 ---------- */
h1,h2,h3,h4,h5{
  font-family:var(--font-head);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.14;
  color:var(--paper);
  text-wrap:balance;
}
h1{font-size:clamp(38px,6.2vw,86px);line-height:1.04}
h2{font-size:clamp(27px,3.5vw,44px)}
h3{font-size:clamp(20px,2vw,26px);line-height:1.3}
h4{font-size:clamp(16px,1.4vw,19px);line-height:1.4}
strong{font-weight:800;color:var(--paper)}
small{font-size:.82em}

/* ---------- 工具类 ---------- */
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.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}

/* ---------- 布局容器 ---------- */
.shell{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{
  position:relative;
  padding-block:clamp(44px,6vw,92px);
}
.stack > * + *{margin-top:16px}
.rule{
  height:1px;border:0;margin-block:clamp(22px,3.6vw,44px);
  background:linear-gradient(90deg,var(--line),rgba(36,74,61,.15) 65%,transparent);
}

/* ---------- 12 列技术网格 ---------- */
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(14px,2vw,28px);
}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}
@media (max-width:820px){
  .span-4,.span-6,.span-8{grid-column:span 12}
}

/* ---------- 文本段落组件 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);
  font-size:11px;line-height:1.4;letter-spacing:.22em;text-transform:uppercase;
  color:var(--lime);
}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;opacity:.85}
.lead{
  font-size:clamp(16.5px,1.45vw,20px);
  line-height:1.75;
  color:rgba(230,241,236,.88);
  max-width:60ch;
}
.prose{max-width:68ch;color:rgba(230,241,236,.86)}
.prose p + p{margin-top:1.05em}
.prose a{color:var(--lime);border-bottom:1px solid rgba(198,255,74,.42)}
.prose a:hover{background:var(--lime-soft)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  padding:13px 22px;
  border:1px solid transparent;border-radius:var(--radius);
  font-weight:800;font-size:14.5px;letter-spacing:.02em;line-height:1.2;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--lime);color:var(--ink-900);border-color:var(--lime)}
.btn--primary:hover{background:var(--lime-bright);border-color:var(--lime-bright)}
.btn--ghost{
  background:rgba(124,157,184,.07);
  border-color:var(--line);
  color:var(--paper);
}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime);background:var(--lime-soft)}
.btn--quiet{
  padding:0 0 3px;border:0;border-radius:0;background:none;
  color:var(--lime);font-weight:700;
  border-bottom:1px solid rgba(198,255,74,.45);
}
.btn--quiet:hover{background:none;border-bottom-color:var(--lime);color:var(--lime-bright);transform:none}

/* ---------- 标签 / 筛选片 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:.45em;
  padding:5px 10px;border:1px solid var(--line);border-radius:var(--radius);
  font-family:var(--font-mono);font-size:10.5px;line-height:1.4;
  letter-spacing:.12em;text-transform:uppercase;
  color:var(--slate);background:rgba(19,42,34,.62);
  white-space:nowrap;
}
.tag--lime{color:var(--ink-900);background:var(--lime);border-color:var(--lime)}
.tag--orange{color:var(--orange);background:var(--orange-soft);border-color:rgba(255,138,61,.5)}
.tag--slate{color:var(--slate);background:rgba(124,157,184,.08);border-color:rgba(124,157,184,.4)}

.chip{
  display:inline-flex;align-items:center;gap:.45em;
  padding:7px 13px;border:1px solid var(--line);border-radius:var(--radius);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--slate);background:rgba(19,42,34,.5);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.chip:hover{color:var(--paper);border-color:var(--slate);background:rgba(19,42,34,.8)}
.chip[aria-pressed="true"]{background:var(--lime);border-color:var(--lime);color:var(--ink-900);font-weight:700}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted);
}
.breadcrumb a{color:var(--slate);transition:color var(--dur) var(--ease)}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb__sep{color:var(--line)}
.breadcrumb [aria-current="page"]{color:var(--paper)}

/* ---------- 资料卡 ---------- */
.panel{
  position:relative;
  padding:clamp(18px,2.4vw,30px);
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(19,42,34,.94),rgba(11,26,21,.94));
}
.panel::before,.panel::after{
  content:"";position:absolute;width:10px;height:10px;
  border:1px solid var(--lime);opacity:.5;pointer-events:none;
}
.panel::before{top:-1px;left:-1px;border-right:0;border-bottom:0}
.panel::after{bottom:-1px;right:-1px;border-left:0;border-top:0}

/* ---------- 大数字数据块 ---------- */
.data-figure{display:grid;gap:8px}
.data-figure__num{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(32px,4.4vw,62px);line-height:1;
  letter-spacing:-.02em;color:var(--lime);
}
.data-figure__label{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);
}

/* ---------- 图像容器（页面阶段放置占位图/SVG） ---------- */
.media-frame{
  position:relative;isolation:isolate;
  aspect-ratio:16/10;
  overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(150deg,var(--ink-700),var(--ink-800) 70%);
}
.media-frame img,.media-frame svg{
  width:100%;height:100%;object-fit:cover;opacity:.92;
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(198,255,74,.10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(198,255,74,.08) 1px, transparent 1px);
  background-size:48px 48px;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame__caption{
  display:block;margin-top:10px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);
}

/* ---------- 滚动入场 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
[data-reveal].is-visible{opacity:1;transform:none}

/* ============================================================
   头部
   ============================================================ */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:11px 18px;
  background:var(--lime);color:var(--ink-900);
  font-weight:800;font-size:14px;border-radius:var(--radius);
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus-visible{transform:translateY(0)}

.site-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg,rgba(6,17,13,.97),rgba(6,17,13,.86));
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid var(--line);
}

/* 顶部细轨 */
.header-rail{border-bottom:1px solid rgba(36,74,61,.7)}
.header-rail__inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:var(--rail-h);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;
  color:var(--muted);
}
.rail-meta{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rail-link{
  color:var(--slate);font-size:10.5px;letter-spacing:.16em;
  border-bottom:1px dashed rgba(124,157,184,.45);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rail-link:hover{color:var(--lime);border-bottom-color:var(--lime)}

.version-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:4px 11px;border-radius:999px;
  border:1px solid rgba(255,138,61,.45);
  background:var(--orange-soft);
  color:var(--orange);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;
  white-space:nowrap;
}
.version-badge__dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 0 3px rgba(255,138,61,.16);
  animation:badge-pulse 2.6s var(--ease) infinite;
}
@keyframes badge-pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 3px rgba(255,138,61,.16)}
  50%{opacity:.55;box-shadow:0 0 0 6px rgba(255,138,61,.05)}
}

/* 刊头 */
.masthead{padding-block:clamp(12px,1.8vw,22px)}
.masthead__inner{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:14px;
}
.masthead__side{display:flex;align-items:center;gap:10px;min-width:0}
.masthead__side--start{justify-content:flex-start}
.masthead__side--end{justify-content:flex-end}

.brand{display:grid;justify-items:center;gap:3px;text-align:center;min-width:0}
.brand__mark{
  font-size:10.5px;letter-spacing:.42em;text-indent:.42em;
  color:var(--lime);line-height:1;
}
.brand__name{
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(26px,4.2vw,46px);
  letter-spacing:-.035em;
  line-height:1;
  color:var(--paper);
  transition:color var(--dur) var(--ease);
}
.brand:hover .brand__name{color:var(--lime)}
.brand__sub{
  font-size:9.5px;letter-spacing:.32em;text-indent:.32em;
  color:var(--slate);line-height:1;
}

/* 工具按钮 */
.tool-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:9px 16px;border-radius:var(--radius);
  border:1px solid var(--lime);background:var(--lime);color:var(--ink-900);
  font-weight:800;font-size:13px;letter-spacing:.02em;line-height:1.2;
  white-space:nowrap;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.tool-btn:hover{background:var(--lime-bright);border-color:var(--lime-bright)}
.tool-btn--ghost{
  background:rgba(19,42,34,.62);
  border-color:var(--line);
  color:var(--paper);
  font-weight:700;
}
.tool-btn--ghost:hover{border-color:var(--lime);color:var(--lime);background:var(--lime-soft)}

/* 移动抽屉按钮 */
.nav-toggle{
  display:none;
  align-items:center;gap:10px;
  padding:9px 14px;border-radius:var(--radius);
  border:1px solid var(--line);
  background:rgba(19,42,34,.62);
  color:var(--paper);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;line-height:1;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-toggle:hover,.nav-toggle[aria-expanded="true"]{border-color:var(--lime);color:var(--lime);background:var(--lime-soft)}
.nav-toggle__bars{display:inline-grid;gap:3px;width:14px}
.nav-toggle__bars > span{display:block;height:2px;background:currentColor;transition:transform var(--dur) var(--ease)}
.nav-toggle__bars > span:nth-child(2){width:72%}
.nav-toggle__bars > span:nth-child(3){width:46%}
.nav-toggle__text{white-space:nowrap}

/* 栏目行 */
.primary-nav{
  border-top:1px solid rgba(36,74,61,.55);
  background:linear-gradient(180deg,rgba(11,26,21,.55),rgba(11,26,21,.18));
}
.primary-nav__list{
  display:flex;flex-wrap:wrap;justify-content:center;align-items:stretch;
  max-width:var(--shell-max);margin-inline:auto;
  padding-inline:clamp(8px,2vw,24px);
}
.primary-nav__list > li + li{border-left:1px solid rgba(36,74,61,.55)}
.nav-link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:8px;
  padding:15px clamp(12px,1.9vw,26px);
  font-size:14px;font-weight:700;letter-spacing:.04em;line-height:1.2;
  color:rgba(230,241,236,.82);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-link__idx{
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.08em;
  color:var(--slate);transition:color var(--dur) var(--ease);
}
.nav-link::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:2px;
  background:var(--lime);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--paper);background:rgba(198,255,74,.07)}
.nav-link:hover .nav-link__idx{color:var(--lime)}
.nav-link:hover::before{transform:scaleX(1)}
.nav-link[aria-current="page"]{background:var(--lime);color:var(--ink-900)}
.nav-link[aria-current="page"] .nav-link__idx{color:rgba(6,17,13,.62)}
.nav-link[aria-current="page"]::before{display:none}

.primary-nav__foot{display:none}

/* 滚动进度尺 */
.scroll-meter{height:2px;background:rgba(36,74,61,.55);overflow:hidden}
.scroll-meter__fill{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--lime),var(--orange));
  transition:width .12s linear;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,120px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,26,21,.97),var(--ink-900) 78%);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--lime),var(--orange),transparent);
  opacity:.55;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr repeat(3,1fr);
  gap:clamp(20px,3vw,44px);
  padding-block:clamp(38px,5.5vw,68px);
  border-bottom:1px solid rgba(36,74,61,.6);
}
.footer-brand{display:grid;gap:12px;align-content:start}
.footer-brand__name{
  font-family:var(--font-head);font-weight:900;
  font-size:clamp(22px,2.6vw,30px);letter-spacing:-.03em;line-height:1.1;
  transition:color var(--dur) var(--ease);
}
.footer-brand__name:hover{color:var(--lime)}
.footer-brand__line{
  font-size:10.5px;letter-spacing:.18em;color:var(--lime);text-transform:uppercase;
}
.footer-brand__note{
  font-size:13.5px;line-height:1.8;color:var(--muted);max-width:34ch;
}
.footer-col__title{
  font-family:var(--font-mono);font-size:10.5px;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--slate);
  display:flex;align-items:center;gap:8px;
}
.footer-col__title::before{content:"";width:14px;height:1px;background:var(--slate);opacity:.7}
.footer-col__list{display:grid;gap:10px;margin-top:16px}
.footer-link{
  display:inline-block;
  font-size:14px;color:rgba(230,241,236,.8);
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-link:hover{color:var(--lime);border-bottom-color:rgba(198,255,74,.55)}
.footer-link--inline{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--muted);
}

.footer-contact{
  display:flex;flex-wrap:wrap;gap:12px 32px;align-items:center;
  padding-block:18px;
  border-bottom:1px solid rgba(36,74,61,.6);
}
.footer-contact__item{
  display:inline-flex;align-items:baseline;gap:9px;
  font-size:12.5px;color:var(--paper);
}
.footer-contact__key{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--slate);
}
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 28px;
  padding-block:20px clamp(26px,4vw,40px);
  font-size:12px;color:var(--muted);
}
.footer-base__legal{font-size:11px;letter-spacing:.1em;color:var(--slate)}
.footer-base__meta{color:var(--muted)}
.footer-base__links{display:flex;flex-wrap:wrap;gap:18px}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1099px){
  .brand__sub{letter-spacing:.24em;text-indent:.24em}
  .nav-link{padding-inline:clamp(10px,1.4vw,18px);font-size:13.5px}
}

@media (max-width:899px){
  .rail-meta{display:none}
  .header-rail__inner{font-size:9.5px;min-height:32px}
  .version-badge{font-size:9.5px;padding:3px 9px}

  .masthead{padding-block:12px}
  .masthead__side--end{display:none}
  .masthead__side--start .tool-btn{display:none}
  .nav-toggle{display:inline-flex}
  .brand__name{font-size:clamp(24px,7vw,34px)}
  .brand__mark{font-size:9.5px;letter-spacing:.34em;text-indent:.34em}
  .brand__sub{font-size:8.5px;letter-spacing:.26em;text-indent:.26em}

  /* 移动抽屉：data-open 展开 */
  .primary-nav{
    display:block;
    max-height:0;
    overflow:hidden;
    opacity:0;
    visibility:hidden;
    background:rgba(11,26,21,.98);
    border-top:1px solid var(--line);
    transition:max-height .28s var(--ease),opacity .2s var(--ease),visibility .28s linear;
  }
  .primary-nav[data-open]{
    max-height:calc(100vh - 104px);
    max-height:calc(100dvh - 104px);
    overflow-y:auto;
    opacity:1;
    visibility:visible;
  }
  .primary-nav__list{
    flex-direction:column;align-items:stretch;
    padding-inline:0;
  }
  .primary-nav__list > li + li{border-left:0;border-top:1px solid rgba(36,74,61,.5)}
  .nav-link{
    width:100%;
    padding:15px 22px;
    font-size:15px;
    justify-content:flex-start;
  }
  .nav-link::before{
    top:0;bottom:0;left:0;right:auto;
    width:2px;height:auto;
    transform:scaleY(0);transform-origin:top center;
  }
  .nav-link:hover::before{transform:scaleY(1)}
  .nav-link[aria-current="page"]{background:var(--lime);color:var(--ink-900)}

  .primary-nav__foot{
    display:grid;gap:12px;
    padding:18px 22px 26px;
    border-top:1px solid var(--line);
  }
  .nav-foot__label{
    font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;
    text-transform:uppercase;color:var(--muted);
  }
  .primary-nav__foot .tool-btn{width:100%}

  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
  .footer-base{justify-content:flex-start}
}

@media (max-width:599px){
  :root{--gutter:16px}
  .masthead__inner{grid-template-columns:auto 1fr auto;gap:10px}
  .footer-grid{grid-template-columns:1fr}
  .footer-contact{gap:10px 20px}
  .footer-contact__item{font-size:12px}
  .footer-base__links{gap:14px}
  .data-figure__num{font-size:clamp(30px,9vw,44px)}
}

/* ---------- 可访问性：降低动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .btn:hover,.btn:active{transform:none}
}