/* ==========================================================================
   b体育主站 · 共享层 /assets/site.css
   语汇：夜场灯光 + 数据看板 + 档案标签
   ========================================================================== */

/* 1 · 重置 ---------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 20px);
}
body,h1,h2,h3,h4,h5,p,ul,ol,li,dl,dt,dd,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video,picture{max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
hr{border:0;height:1px;background:var(--line);margin:0}

/* 2 · 变量 ---------------------------------------------------------------- */
:root{
  --ink:#0B1728;
  --panel:#121821;
  --panel-2:#1A2330;
  --line:#2A3646;
  --line-soft:rgba(42,54,70,.6);
  --green:#9DFF3A;
  --orange:#FF8A1E;
  --blue:#3FA9FF;
  --silver:#C3CBD6;
  --text:#F2F5F8;
  --text-2:#A7B2C0;
  --red:#FF5A5F;
  --cyan:#38E8B0;

  --font-head:'Barlow Condensed','Arial Narrow','Noto Sans SC','PingFang SC',sans-serif;
  --font-body:'Inter','Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','Roboto Mono',Consolas,'Noto Sans Mono CJK SC',monospace;

  --wrap:1280px;
  --gap:clamp(16px,2vw,28px);
  --strip-h:0px;
  --masthead-h:62px;
  --header-h:calc(var(--strip-h) + var(--masthead-h));

  --chamfer-xs:polygon(0 6px,6px 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%);
  --chamfer-sm:polygon(0 9px,9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
  --chamfer-md:polygon(0 16px,16px 0,100% 0,100% calc(100% - 16px),calc(100% - 16px) 100%,0 100%);

  --shadow-panel:0 18px 40px -28px rgba(0,0,0,.9);
}
@media (min-width:641px){
  :root{--strip-h:34px;--masthead-h:66px}
}

/* 3 · 中文排版与基础 ------------------------------------------------------ */
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 620px at 88% -12%, rgba(63,169,255,.13), transparent 62%),
    radial-gradient(900px 520px at -8% 6%, rgba(157,255,58,.07), transparent 60%),
    repeating-linear-gradient(115deg, rgba(255,255,255,.018) 0 1px, transparent 1px 46px);
  background-attachment:fixed;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:900;
  line-height:1.1;
  color:var(--text);
  letter-spacing:.01em;
}
h1{
  font-size:clamp(2.6rem,6vw,5rem);
  letter-spacing:-.005em;
  transform:skewX(-3deg);
  transform-origin:left center;
  max-width:24ch;
}
h2{font-size:clamp(1.6rem,3vw,2.4rem)}
h3{font-size:clamp(1.15rem,2vw,1.4rem)}
h4{font-size:1.05rem;font-weight:800}
p{font-family:var(--font-body)}
strong{color:var(--text);font-weight:700}
small{font-size:.8125rem;color:var(--text-2)}
::selection{background:var(--green);color:#07121d}

.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.title-xl{font-size:clamp(2rem,4.4vw,3.4rem);transform:skewX(-3deg);transform-origin:left center}
.lead{
  font-size:clamp(1.02rem,1.5vw,1.18rem);
  line-height:1.85;
  color:var(--silver);
  max-width:62ch;
}
.prose{max-width:70ch;line-height:1.8;color:var(--text-2)}
.prose p + p{margin-top:1em}
.prose ul,.prose ol{list-style:disc;padding-left:1.35em;margin:1em 0}
.prose ol{list-style:decimal}
.prose li + li{margin-top:.45em}
.prose h2,.prose h3{margin:1.6em 0 .6em;color:var(--text)}
.prose a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}

:focus-visible{outline:2px solid var(--green);outline-offset:3px}
#main-content{outline:none}

/* 4 · 布局工具 ------------------------------------------------------------ */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:clamp(16px,4vw,40px);
}
.wrap--narrow{max-width:900px}
.section{padding-block:clamp(44px,6.5vw,96px)}
.section + .section{border-top:1px solid var(--line-soft)}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.span-1{grid-column:span 1}
.span-2{grid-column:span 2}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-9{grid-column:span 9}
.span-10{grid-column:span 10}
.span-12{grid-column:span 12}

.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(20px,3.4vw,52px);align-items:start}
.split--4-8{grid-template-columns:minmax(0,4fr) minmax(0,8fr)}
.split--right{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:14px 28px;
  padding-bottom:16px;
  margin-bottom:clamp(22px,3vw,36px);
  border-bottom:1px solid var(--line);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.22em;
  color:var(--orange);
}
.eyebrow::before{content:"";display:block;width:24px;height:2px;background:currentColor}

/* 5 · 按钮 ---------------------------------------------------------------- */
.btn{
  --btn-bg:transparent;
  --btn-fg:var(--text);
  --btn-bd:var(--line);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.72em 1.3em;
  font-family:var(--font-head);
  font-weight:800;
  font-size:1rem;
  letter-spacing:.03em;
  line-height:1.1;
  color:var(--btn-fg);
  background:var(--btn-bg);
  border:1px solid var(--btn-bd);
  clip-path:var(--chamfer-sm);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{--btn-bg:var(--green);--btn-fg:#07131f;--btn-bd:var(--green)}
.btn--primary:hover{--btn-bg:#b4ff6b;--btn-bd:#b4ff6b}
.btn--ghost{--btn-bg:rgba(195,203,214,.06);--btn-fg:var(--silver);--btn-bd:rgba(195,203,214,.34)}
.btn--ghost:hover{--btn-fg:var(--text);--btn-bd:var(--green)}
.btn--sm{padding:.5em .95em;font-size:.875rem}
.btn:focus-visible{outline:none;box-shadow:inset 0 0 0 3px var(--green);filter:brightness(1.06)}
.hide-sm{}

/* 6 · 页头（框架式导航） -------------------------------------------------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--ink);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:2px;
  background:linear-gradient(90deg,
    var(--green) 0 22%,
    rgba(42,54,70,0) 22% 58%,
    var(--orange) 58% 66%,
    rgba(42,54,70,0) 66% 100%);
  pointer-events:none;
}
.skip-link{
  position:absolute;
  left:50%;
  top:-120px;
  transform:translateX(-50%);
  z-index:120;
  padding:.7em 1.3em;
  font-family:var(--font-head);
  font-weight:800;
  background:var(--green);
  color:#07131f;
  clip-path:var(--chamfer-xs);
  transition:top .2s ease;
}
.skip-link:focus{top:12px}

.header-strip{height:var(--strip-h);background:var(--panel);border-bottom:1px solid var(--line);overflow:hidden}
.header-strip__inner{
  display:flex;
  align-items:center;
  gap:14px;
  height:34px;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:clamp(16px,4vw,40px);
}
.header-strip__dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--green);
  box-shadow:0 0 0 0 rgba(157,255,58,.55);
  animation:strip-pulse 2.6s ease-out infinite;
  flex:none;
}
@keyframes strip-pulse{
  0%{box-shadow:0 0 0 0 rgba(157,255,58,.5)}
  70%{box-shadow:0 0 0 9px rgba(157,255,58,0)}
  100%{box-shadow:0 0 0 0 rgba(157,255,58,0)}
}
.header-strip__text{font-size:.6875rem;line-height:1;color:var(--text-2);letter-spacing:.16em;white-space:nowrap}
.header-strip__spacer{flex:1 1 auto}

.masthead{position:relative;background:var(--ink)}
.masthead__inner{
  display:flex;
  align-items:center;
  gap:14px;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:clamp(16px,4vw,40px);
  min-height:var(--masthead-h);
}

.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand__mark{
  display:grid;
  place-items:center;
  width:38px;height:38px;
  background:linear-gradient(135deg,var(--green),#63d613);
  color:#07131f;
  font-family:var(--font-head);
  font-weight:900;
  font-size:1.45rem;
  line-height:1;
  transform:skewX(-8deg);
  clip-path:var(--chamfer-sm);
}
.brand__text{display:flex;flex-direction:column;line-height:1.05}
.brand__name{font-family:var(--font-head);font-weight:900;font-size:1.12rem;letter-spacing:.02em;color:var(--text)}
.brand__tag{font-family:var(--font-mono);font-size:.625rem;letter-spacing:.2em;color:var(--orange);text-transform:uppercase}

.masthead__actions{display:flex;align-items:center;gap:10px;margin-left:auto}

.nav-toggle{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:46px;height:38px;
  padding-inline:11px;
  border:1px solid var(--line);
  background:var(--panel-2);
  clip-path:var(--chamfer-xs);
  flex:none;
}
.nav-toggle__bar{display:block;height:2px;background:var(--silver);transition:transform .22s ease,opacity .22s ease,background-color .22s ease}
.site-header[data-open] .nav-toggle__bar:nth-child(1){transform:translateY(7px) rotate(45deg);background:var(--green)}
.site-header[data-open] .nav-toggle__bar:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bar:nth-child(3){transform:translateY(-7px) rotate(-45deg);background:var(--green)}

/* 移动端滑出导航 */
.nav{
  position:fixed;
  top:0;right:0;bottom:0;
  z-index:70;
  width:min(88vw,380px);
  padding:calc(var(--header-h) + 22px) 24px 40px;
  background:linear-gradient(180deg,var(--panel) 0%,var(--ink) 100%);
  border-left:1px solid var(--line);
  box-shadow:-26px 0 60px rgba(0,0,0,.5);
  transform:translateX(102%);
  visibility:hidden;
  overflow-y:auto;
  transition:transform .3s cubic-bezier(.2,.75,.2,1),visibility .3s ease;
}
.site-header[data-open] .nav,
.nav[data-open]{transform:none;visibility:visible}
.nav__list{display:flex;flex-direction:column;gap:2px}
.nav__item{border-bottom:1px solid var(--line-soft)}
.nav__link{
  position:relative;
  display:inline-block;
  padding:.62em 0;
  font-family:var(--font-head);
  font-weight:800;
  font-size:1.3rem;
  letter-spacing:.03em;
  color:var(--silver);
  transition:color .18s ease,transform .18s ease;
}
.nav__link:hover{color:var(--text)}
.nav__link[aria-current="page"]{color:var(--text)}
.nav__link[aria-current="page"]::before{
  content:"";
  position:absolute;
  left:-16px;top:50%;
  width:6px;height:6px;
  margin-top:-3px;
  background:var(--green);
  transform:rotate(45deg);
}
.nav__cta{display:grid;gap:10px;margin-top:26px}
.nav__cta .btn{width:100%}

.nav-scrim{
  position:fixed;
  inset:0;
  z-index:65;
  background:rgba(6,12,21,.72);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
}
.site-header[data-open] .nav-scrim{opacity:1;visibility:visible}

.frame-rail{
  position:fixed;
  top:0;left:0;
  width:2px;height:100vh;
  z-index:75;
  pointer-events:none;
  background:linear-gradient(180deg,
    rgba(157,255,58,.9) 0,
    rgba(157,255,58,0) 18%,
    rgba(42,54,70,.95) 18%,
    rgba(42,54,70,.95) 76%,
    rgba(255,138,30,.65) 100%);
}

.scroll-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  height:2px;
  width:100%;
  z-index:3;
  transform:scaleX(0);
  transform-origin:0 50%;
  opacity:0;
  background:linear-gradient(90deg,var(--green),var(--orange));
  transition:opacity .25s ease;
}

/* 7 · 页脚 ---------------------------------------------------------------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,130px);
  background:var(--panel);
  border-top:1px solid var(--line);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:2px;
  background:linear-gradient(90deg,var(--green) 0 14%,rgba(42,54,70,0) 14% 72%,var(--orange) 72% 82%,rgba(42,54,70,0) 82% 100%);
}
.footer-mark{
  position:absolute;
  right:-1vw;
  top:-1.5rem;
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(5rem,18vw,15rem);
  line-height:.8;
  letter-spacing:-.02em;
  color:rgba(195,203,214,.035);
  -webkit-text-stroke:1px rgba(195,203,214,.1);
  pointer-events:none;
  user-select:none;
}
.footer-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:clamp(28px,4vw,56px);
  max-width:var(--wrap);
  margin-inline:auto;
  padding:clamp(40px,5.5vw,72px) clamp(16px,4vw,40px) clamp(26px,3.5vw,44px);
}
.footer-brand__note{
  margin-top:16px;
  max-width:32ch;
  font-size:.9375rem;
  line-height:1.75;
  color:var(--text-2);
}
.footer-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.footer-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(22px,3vw,40px)}
.footer-col__title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:.6875rem;
  font-weight:500;
  letter-spacing:.22em;
  color:var(--orange);
}
.footer-col__list li + li{margin-top:11px}
.footer-col__list a{
  font-size:.9375rem;
  color:var(--text-2);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
  transition:color .18s ease,border-color .18s ease;
}
.footer-col__list a:hover{color:var(--text);border-bottom-color:var(--green)}
.footer-col__list--contact li + li{margin-top:14px}
.contact-line{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.contact-line--wrap{align-items:flex-start}
.contact-line__key{
  font-size:.625rem;
  letter-spacing:.16em;
  color:var(--silver);
  border:1px solid var(--line);
  padding:1px 6px;
  line-height:1.6;
  flex:none;
}
.contact-line__val{
  font-family:var(--font-mono);
  font-size:.8125rem;
  color:var(--text);
  word-break:break-all;
}
.copy-btn{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.08em;
  padding:2px 8px;
  color:var(--silver);
  background:var(--panel-2);
  border:1px solid var(--line);
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.copy-btn:hover{color:var(--green);border-color:var(--green)}
.copy-btn.is-copied{color:#07131f;background:var(--cyan);border-color:var(--cyan)}
.footer-bottom{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px 28px;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:18px clamp(16px,4vw,40px) 34px;
  border-top:1px solid var(--line);
}
.legal-links{display:flex;flex-wrap:wrap;gap:20px}
.legal-links a{font-size:.8125rem;color:var(--text-2);transition:color .18s ease}
.legal-links a:hover{color:var(--green)}
.footer-meta{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:.75rem;color:var(--text-2)}
.footer-meta__icp{color:var(--silver)}

/* 8 · 通用组件 ------------------------------------------------------------ */
.panel{
  padding:clamp(18px,2.4vw,28px);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--shadow-panel);
}
.panel--soft{background:var(--panel-2)}
.panel--chamfer{clip-path:var(--chamfer-md)}
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--gap)}
.card{
  padding:clamp(16px,2vw,24px);
  background:var(--panel);
  border:1px solid var(--line);
  clip-path:var(--chamfer-md);
  transition:transform .22s ease,border-color .22s ease,background-color .22s ease;
}
.card:hover{transform:translateY(-3px);border-color:rgba(157,255,58,.55);background:var(--panel-2)}

.tag{
  display:inline-block;
  padding:.24em .6em;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.14em;
  color:var(--silver);
  background:var(--panel-2);
  border:1px solid var(--line);
  clip-path:var(--chamfer-xs);
}
.tag--green{color:#07131f;background:var(--green);border-color:var(--green)}
.tag--orange{color:#1a0f02;background:var(--orange);border-color:var(--orange)}

.kpi{display:flex;flex-direction:column;gap:6px}
.kpi__num{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(1.7rem,3.2vw,2.5rem);
  line-height:1;
  letter-spacing:.02em;
  color:var(--green);
}
.kpi__label{font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.16em;color:var(--text-2)}
.kpi--orange .kpi__num{color:var(--orange)}
.kpi--blue .kpi__num{color:var(--blue)}
.kpi--silver .kpi__num{color:var(--silver)}

.timeline{overflow-x:auto;padding-bottom:8px;scrollbar-width:thin}
.timeline__list{display:flex;gap:clamp(12px,2vw,22px);min-width:max-content;padding:4px 2px 10px}
.timeline__item{
  position:relative;
  width:clamp(210px,26vw,270px);
  padding:20px 18px 18px;
  background:var(--panel);
  border:1px solid var(--line);
  clip-path:var(--chamfer-md);
  transition:border-color .25s ease,transform .25s ease;
}
.timeline__item.is-visible{border-color:rgba(255,138,30,.8)}
.timeline__num{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.18em;
  color:var(--orange);
}
.timeline__dot{
  display:block;
  width:9px;height:9px;
  margin:12px 0 10px;
  background:var(--orange);
  transform:rotate(45deg);
}
.timeline__body{font-size:.9375rem;line-height:1.7;color:var(--text-2)}
.timeline__body strong{color:var(--text)}

.archive-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:20px 18px;
  background:var(--panel);
  border:1px solid var(--line);
  clip-path:var(--chamfer-md);
  transition:transform .22s ease,border-color .22s ease;
}
.archive-card:hover{transform:translateY(-3px);border-color:rgba(157,255,58,.5)}
.archive-card__no{font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.18em;color:var(--green)}
.archive-card__title{font-family:var(--font-head);font-weight:800;font-size:1.2rem;color:var(--text)}
.archive-card__meta{font-family:var(--font-mono);font-size:.75rem;color:var(--text-2)}
.archive-card__foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--line-soft);font-size:.8125rem;color:var(--text-2)}

.index-list{display:flex;flex-direction:column}
.index-row{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:baseline;
  gap:12px 18px;
  padding:16px 4px;
  border-bottom:1px solid var(--line-soft);
  transition:background-color .18s ease,padding-left .18s ease;
}
.index-row:hover{background:rgba(26,35,48,.6);padding-left:10px}
.index-row__no{font-family:var(--font-mono);font-size:.75rem;color:var(--orange);letter-spacing:.14em}
.index-row__main{min-width:0}
.index-row__title{font-family:var(--font-head);font-weight:800;font-size:1.1rem;color:var(--text)}
.index-row__desc{margin-top:4px;font-size:.875rem;color:var(--text-2);line-height:1.7}
.index-row__meta{font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.12em;color:var(--silver);white-space:nowrap}

.matrix{display:grid;gap:0;border:1px solid var(--line);background:var(--panel)}
.matrix__head{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0}
.matrix__head > *{
  padding:12px 16px;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.18em;
  color:var(--orange);
  background:var(--panel-2);
  border-bottom:1px solid var(--line);
}
.matrix__row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-bottom:1px solid var(--line-soft)}
.matrix__row:last-child{border-bottom:0}
.matrix__row:nth-child(odd){background:rgba(26,35,48,.55)}
.matrix__cell{padding:14px 16px;font-size:.9375rem;color:var(--text-2)}
.matrix__cell + .matrix__cell{border-left:1px solid var(--line-soft)}
.matrix__cell strong{color:var(--text)}

.accordion{
  border:1px solid var(--line);
  background:var(--panel);
  margin-bottom:10px;
  clip-path:var(--chamfer-md);
}
.accordion__title{
  display:flex;
  align-items:center;
  gap:12px;
  padding:16px 18px;
  font-family:var(--font-head);
  font-weight:800;
  font-size:1.1rem;
  color:var(--text);
  cursor:pointer;
  list-style:none;
}
.accordion__title::-webkit-details-marker{display:none}
.accordion__title::before{
  content:"+";
  font-family:var(--font-mono);
  font-size:1rem;
  color:var(--green);
  width:18px;
  text-align:center;
  flex:none;
}
.accordion[open] > .accordion__title::before{content:"–";color:var(--orange)}
.accordion[open] > .accordion__title{border-bottom:1px solid var(--line-soft)}
.accordion__body{padding:16px 18px 20px;font-size:.9375rem;line-height:1.8;color:var(--text-2)}
.accordion__body p + p{margin-top:.8em}

.data-table{font-size:.9375rem;border:1px solid var(--line)}
.data-table caption{
  padding:10px 0;
  text-align:left;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.18em;
  color:var(--orange);
}
.data-table th,.data-table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line-soft)}
.data-table thead th{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.16em;
  color:var(--silver);
  background:var(--panel-2);
}
.data-table tbody tr:nth-child(even){background:rgba(26,35,48,.5)}
.data-table td strong{color:var(--text)}

.breadcrumbs{padding-block:18px}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:.75rem;color:var(--text-2)}
.breadcrumbs__list li + li::before{content:"/";margin-right:8px;color:var(--line)}
.breadcrumbs__link{color:var(--text-2);transition:color .18s ease}
.breadcrumbs__link:hover{color:var(--green)}
.breadcrumbs__item[aria-current="page"]{color:var(--silver)}

/* 图片容器基础规则（页面阶段放入画面） */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(135deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);
  clip-path:var(--chamfer-md);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:4/5}
.media-frame img,
.media-frame video{width:100%;height:100%;object-fit:cover;display:block}
.media-frame::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:42%;
  background:linear-gradient(180deg,rgba(11,23,40,0),rgba(11,23,40,.85));
  pointer-events:none;
}
.media-frame__slash{
  position:absolute;
  inset:0;
  background:linear-gradient(115deg,transparent 60%,rgba(157,255,58,.14) 60% 64%,transparent 64%);
  pointer-events:none;
}
.media-frame__cap{
  position:absolute;
  z-index:2;
  left:0;bottom:0;
  padding:10px 14px;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.14em;
  color:var(--silver);
}
.media-frame--empty{
  background-image:
    linear-gradient(135deg,var(--panel-2),var(--panel)),
    repeating-linear-gradient(115deg,rgba(195,203,214,.08) 0 1px,transparent 1px 16px);
}
.media-frame--empty::before{
  content:"影像位";
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.24em;
  color:rgba(195,203,214,.45);
}

/* 9 · 滚动显现 ------------------------------------------------------------ */
[data-reveal]{
  opacity:0;
  transform:translate3d(0,12px,0);
  transition:opacity .5s ease,transform .5s cubic-bezier(.2,.75,.2,1);
  will-change:opacity,transform;
}
[data-reveal].is-visible{opacity:1;transform:none}

/* 10 · 断点 --------------------------------------------------------------- */
@media (max-width:640px){
  .header-strip{display:none}
  .hide-sm{display:none}
}
@media (min-width:641px){
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:721px){
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,2fr);align-items:start}
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1024px){
  .span-3,.span-4,.span-5{grid-column:span 6}
  .span-7,.span-8,.span-9{grid-column:span 12}
  .split,.split--4-8,.split--right{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:720px){
  .grid-12 > [class*="span-"]{grid-column:1 / -1}
  .matrix__head,.matrix__row{grid-template-columns:minmax(0,1fr)}
  .matrix__cell + .matrix__cell{border-left:0;border-top:1px solid var(--line-soft)}
  .index-row{grid-template-columns:auto minmax(0,1fr);row-gap:6px}
  .index-row__meta{grid-column:2;white-space:normal}
}
@media (min-width:901px){
  .nav{
    position:static;
    width:auto;
    padding:0;
    margin-left:auto;
    background:none;
    border:0;
    box-shadow:none;
    transform:none;
    visibility:visible;
    overflow:visible;
    display:flex;
    align-items:center;
  }
  .nav__list{flex-direction:row;align-items:center;gap:clamp(10px,1.5vw,24px)}
  .nav__item{border-bottom:0}
  .nav__link{
    padding:.45em .1em;
    font-size:1rem;
    color:var(--silver);
  }
  .nav__link::after{
    content:"";
    position:absolute;
    left:0;right:100%;bottom:0;
    height:2px;
    background:var(--green);
    transition:right .22s ease;
  }
  .nav__link:hover::after,
  .nav__link[aria-current="page"]::after{right:0}
  .nav__link[aria-current="page"]{color:var(--text)}
  .nav__link[aria-current="page"]::before{display:none}
  .nav__cta{display:none}
  .nav-toggle{display:none}
  .nav-scrim{display:none}
  .masthead__actions{margin-left:clamp(12px,2vw,28px)}
}

/* 11 · 无障碍与降级 ------------------------------------------------------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  [data-reveal]{opacity:1;transform:none;transition:none}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .btn:hover{transform:none}
}