/* 版本彩讯 · 共享站点样式 /assets/site.css
   数据实验室 × 夜间资讯台：深靛蓝底、等宽数字、粗边框与硬阴影 */

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
[hidden]{display:none !important}

/* ---------- tokens ---------- */
:root{
  --ink:#0B1030;
  --panel:#121A3D;
  --line:#2A3766;
  --fog:#F2F5FF;
  --mist:#AEB9D6;
  --mint:#27E0B0;
  --amber:#F5B841;
  --rose:#FF4D7E;
  --mint-deep:#0E6B5A;
  --amber-deep:#7A4E12;

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

  --wrap:1280px;
  --gutter:clamp(18px,4vw,48px);
  --border:2px;
  --shadow-hard:6px 6px 0 var(--amber-deep);
}

/* ---------- base ---------- */
body{
  min-height:100vh;
  background-color:var(--ink);
  background-image:
    radial-gradient(1200px 620px at 86% -12%,rgba(39,224,176,.10),transparent 62%),
    radial-gradient(900px 520px at -6% 4%,rgba(245,184,65,.08),transparent 58%);
  background-repeat:no-repeat;
  color:var(--fog);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-weight:800;line-height:1.15;letter-spacing:-.01em;color:var(--fog)}
h1{font-family:var(--font-display);font-weight:200;font-size:clamp(44px,7.4vw,110px);line-height:.96;letter-spacing:-.03em}
h2{font-family:var(--font-head);font-weight:900;font-size:clamp(26px,3.6vw,44px);line-height:1.06;letter-spacing:-.015em}
h3{font-size:clamp(18px,2vw,22px);font-weight:800}
strong{color:var(--fog);font-weight:800}
::selection{background:var(--mint);color:var(--ink)}
:focus-visible{outline:3px solid var(--mint);outline-offset:3px}

.mono,.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- layout ---------- */
.container{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(36px,6vw,72px)}
.grid12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.2vw,28px)}
.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}
@media (max-width:900px){
  .col-4,.col-5,.col-6,.col-7,.col-8{grid-column:1/-1}
}

/* ---------- skip link ---------- */
.skip-link{
  position:absolute;
  left:16px;top:-72px;
  z-index:200;
  padding:10px 18px;
  background:var(--mint);
  color:var(--ink);
  font-weight:800;
  font-size:14px;
  border:2px solid var(--ink);
  transition:top .18s ease;
}
.skip-link:focus{top:12px}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--ink);
  border-bottom:var(--border) solid var(--line);
  box-shadow:0 1px 0 0 rgba(39,224,176,.20);
}
.site-header__inner{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:stretch;
  gap:clamp(12px,2.4vw,32px);
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.brand{
  position:relative;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:3px;
  padding:14px 0 14px 16px;
  min-height:66px;
}
.brand::before{
  content:"";
  position:absolute;left:0;top:50%;
  width:4px;height:28px;
  transform:translateY(-50%);
  background:var(--amber);
  transition:background-color .18s ease,height .18s ease;
}
.brand:hover::before,.brand:focus-visible::before{background:var(--rose);height:36px}
.brand__name{
  font-size:clamp(18px,1.8vw,22px);
  font-weight:800;
  letter-spacing:.08em;
  line-height:1.1;
  color:var(--fog);
}
.brand__tag{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.18em;
  text-transform:uppercase;
  line-height:1.2;
  color:var(--mint);
}
.site-nav{display:flex;justify-content:flex-end;align-items:stretch}
.nav-list{display:flex;align-items:stretch;height:100%}
.nav-list__item{display:flex;min-width:0}
.nav-list__item + .nav-list__item .nav-link{border-left:1px solid var(--line)}
.nav-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:7px;
  padding:0 clamp(8px,1.2vw,16px);
  min-height:66px;
  font-size:14px;
  font-weight:500;
  letter-spacing:.04em;
  white-space:nowrap;
  color:var(--mist);
  transition:color .16s ease,background-color .16s ease;
}
.nav-link__index{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.04em;
  color:var(--amber);
  opacity:.8;
  transition:color .16s ease,opacity .16s ease;
}
.nav-link::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;
  height:3px;
  background:var(--mint);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--fog)}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link:hover .nav-link__index{color:var(--mint);opacity:1}
.nav-link[aria-current="page"]{color:var(--fog);background:rgba(39,224,176,.06)}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--rose)}
.nav-link[aria-current="page"] .nav-link__index{color:var(--mint);opacity:1}
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  align-self:center;
  padding:10px 14px;
  border:var(--border) solid var(--line);
  background:var(--panel);
  color:var(--fog);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  cursor:pointer;
  transition:border-color .16s ease,color .16s ease;
}
.nav-toggle:hover{border-color:var(--mint);color:var(--mint)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bars span{display:block;height:2px;background:currentColor;transition:transform .2s ease,opacity .2s ease}
.nav-toggle__label{line-height:1}
.site-header[data-open="true"] .nav-toggle{border-color:var(--rose);color:var(--rose)}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

@media (max-width:1080px){
  .nav-link{font-size:13px;padding:0 9px}
  .nav-link__index{display:none}
}
@media (max-width:920px){
  .site-header__inner{grid-template-columns:1fr auto}
  .nav-toggle{display:inline-flex;margin-block:10px}
  .brand{padding-left:14px}
  .site-nav{
    position:absolute;
    top:100%;left:0;right:0;
    display:block;
    justify-content:flex-start;
    background:var(--panel);
    border-bottom:var(--border) solid var(--line);
    max-height:0;
    overflow:hidden;
    visibility:hidden;
    box-shadow:0 20px 44px rgba(0,0,0,.48);
    transition:max-height .28s ease,visibility .28s ease;
  }
  .site-header[data-open="true"] .site-nav{
    max-height:min(72vh,560px);
    overflow-y:auto;
    visibility:visible;
  }
  .nav-list{flex-direction:column;height:auto}
  .nav-list__item{display:block}
  .nav-list__item + .nav-list__item .nav-link{border-left:0}
  .nav-link{
    justify-content:space-between;
    min-height:0;
    padding:16px var(--gutter);
    border-top:1px solid var(--line);
    font-size:15px;
  }
  .nav-link::after{display:none}
  .nav-link__index{display:inline;font-size:11px}
  .nav-link:hover,.nav-link:focus-visible,.nav-link[aria-current="page"]{
    background:rgba(39,224,176,.08);
    color:var(--mint);
  }
  .nav-link[aria-current="page"]{box-shadow:inset 3px 0 0 var(--rose)}
}
@media (max-width:420px){
  .brand__tag{letter-spacing:.12em;font-size:9px}
  .nav-toggle__label{display:none}
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:clamp(48px,7vw,96px);
  background:var(--panel);
  border-top:var(--border) solid var(--line);
  color:var(--mist);
}
.footer-band{
  border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(39,224,176,.10),rgba(18,26,61,0) 58%);
}
.footer-band__list{
  display:flex;
  flex-wrap:wrap;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
}
.footer-band__item{padding:11px 18px;border-left:1px solid var(--line)}
.footer-band__item:first-child{padding-left:0;border-left:0;color:var(--fog)}
.footer-band__item--mint{color:var(--mint)}
.site-footer__inner{
  display:grid;
  grid-template-columns:minmax(0,1.7fr) minmax(0,.9fr) minmax(0,.9fr) minmax(0,1.5fr);
  gap:clamp(24px,3.5vw,48px);
  padding-block:clamp(32px,5vw,60px);
}
.footer-brand__name{
  font-family:var(--font-display);
  font-weight:200;
  font-size:clamp(28px,3.6vw,44px);
  letter-spacing:-.02em;
  line-height:1;
  color:var(--fog);
}
.footer-brand__summary{
  margin-top:14px;
  max-width:36ch;
  font-size:14px;
  line-height:1.8;
  color:var(--mist);
}
.footer-col__title{
  padding-bottom:10px;
  margin-bottom:10px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--amber);
}
.footer-col__list{display:grid;gap:2px}
.footer-link{
  position:relative;
  display:inline-block;
  padding:5px 0;
  font-size:14px;
  color:var(--mist);
  transition:color .16s ease;
}
.footer-link::after{
  content:"";
  position:absolute;left:0;bottom:3px;
  width:100%;height:1px;
  background:var(--mint);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease;
}
.footer-link:hover,.footer-link:focus-visible{color:var(--fog)}
.footer-link:hover::after,.footer-link:focus-visible::after{transform:scaleX(1)}
.footer-contact__list{display:grid;gap:0}
.footer-contact__row{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:10px;
  padding:9px 0;
  border-bottom:1px dashed var(--line);
}
.footer-contact__label{
  padding-top:3px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  text-transform:uppercase;
  white-space:nowrap;
  color:var(--mint);
}
.footer-contact__value{
  font-family:var(--font-mono);
  font-size:13px;
  line-height:1.5;
  font-variant-numeric:tabular-nums;
  word-break:break-word;
  color:var(--fog);
}
.footer-meta{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 28px;
  padding-block:18px 26px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--mist);
}
.footer-meta__legal{color:var(--fog)}
.footer-meta__note{color:rgba(174,185,214,.8)}
@media (max-width:1024px){
  .site-footer__inner{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:640px){
  .site-footer__inner{grid-template-columns:minmax(0,1fr)}
  .footer-contact__row{grid-template-columns:minmax(0,1fr);gap:2px}
  .footer-contact__label{padding-top:0}
  .footer-meta{flex-direction:column}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:14px 24px;
  border:var(--border) solid var(--line);
  background:var(--panel);
  color:var(--fog);
  font-size:15px;
  font-weight:800;
  letter-spacing:.02em;
  cursor:pointer;
  box-shadow:var(--shadow-hard);
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease,background-color .16s ease,color .16s ease;
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:8px 8px 0 var(--mint-deep);border-color:var(--mint)}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--mint-deep)}
.btn--primary{background:var(--mint);border-color:var(--mint);color:var(--ink)}
.btn--primary:hover{background:var(--amber);border-color:var(--amber);color:var(--ink)}
.btn--ghost{background:transparent;box-shadow:none;border-color:var(--line)}
.btn--ghost:hover{border-color:var(--rose);color:var(--rose);box-shadow:none;transform:none}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- breadcrumbs ---------- */
.breadcrumbs{padding-block:16px;border-bottom:1px solid var(--line)}
.breadcrumbs__list{
  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(--mist);
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs__link{color:var(--mist);transition:color .16s ease}
.breadcrumbs__link:hover,.breadcrumbs__link:focus-visible{color:var(--mint)}
.breadcrumbs__item[aria-current="page"]{color:var(--fog)}
.breadcrumbs__sep{color:var(--line)}

/* ---------- prose ---------- */
.prose{max-width:74ch;font-size:17px;line-height:1.8;color:var(--fog)}
.prose > * + *{margin-top:1.15em}
.prose h2{font-size:clamp(22px,2.6vw,30px);margin-top:1.9em}
.prose h3{margin-top:1.6em;color:var(--fog)}
.prose p{color:rgba(242,245,255,.88)}
.prose ul,.prose ol{display:grid;gap:.6em}
.prose ul li{position:relative;padding-left:20px}
.prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:10px;height:2px;background:var(--mint)}
.prose ol{counter-reset:pp}
.prose ol li{position:relative;padding-left:28px;counter-increment:pp}
.prose ol li::before{
  content:counter(pp,decimal-leading-zero);
  position:absolute;left:0;top:.15em;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--amber);
}
.prose a{color:var(--mint);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--amber)}
.prose blockquote{
  padding:14px 20px;
  border-left:3px solid var(--amber);
  background:var(--panel);
  color:var(--mist);
}

/* ---------- panels & labels ---------- */
.panel{
  background:var(--panel);
  border:var(--border) solid var(--line);
  padding:clamp(18px,2.4vw,28px);
}
.panel--stamp{box-shadow:var(--shadow-hard);border-color:var(--line)}
.index-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--amber);
}
.index-label::before{content:"";width:16px;height:2px;background:var(--amber)}

/* ---------- numbered section head ---------- */
.section-head{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  align-items:end;
  gap:clamp(12px,2vw,24px);
  padding-bottom:14px;
  margin-bottom:clamp(20px,3vw,32px);
  border-bottom:var(--border) solid var(--line);
}
.section-head__num{
  font-family:var(--font-mono);
  font-size:clamp(24px,3.4vw,40px);
  font-weight:700;
  line-height:1;
  font-variant-numeric:tabular-nums;
  color:var(--amber);
}
.section-head__title{
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(24px,3.2vw,38px);
  line-height:1.05;
  letter-spacing:-.01em;
  color:var(--fog);
}
.section-head__note{
  grid-column:1/-1;
  font-size:14px;
  line-height:1.7;
  color:var(--mist);
}

/* ---------- data band ---------- */
.data-band{
  display:flex;
  flex-wrap:wrap;
  border-top:var(--border) solid var(--line);
  border-bottom:var(--border) solid var(--line);
  background:var(--panel);
}
.data-band__cell{
  flex:1 1 160px;
  min-width:0;
  padding:14px 18px;
  border-left:1px solid var(--line);
}
.data-band__cell:first-child{border-left:0}
.data-band__label{
  display:block;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
}
.data-band__value{
  display:block;
  margin-top:2px;
  font-family:var(--font-mono);
  font-size:20px;
  font-variant-numeric:tabular-nums;
  color:var(--fog);
}
.data-band__value--mint{color:var(--mint)}
.data-band__value--amber{color:var(--amber)}
.data-band__value--rose{color:var(--rose)}

/* ---------- filter protocol ---------- */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.filter-btn{
  padding:9px 14px;
  border:var(--border) solid var(--line);
  background:transparent;
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  cursor:pointer;
  transition:border-color .16s ease,color .16s ease,background-color .16s ease,box-shadow .16s ease;
}
.filter-btn:hover{border-color:var(--mint);color:var(--fog)}
.filter-btn[aria-pressed="true"]{
  background:var(--rose);
  border-color:var(--rose);
  color:var(--ink);
  font-weight:700;
  box-shadow:3px 3px 0 var(--amber-deep);
}
.filter-status{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--mist);
}
@media (max-width:640px){
  .filter-status{margin-left:0;width:100%}
}

/* ---------- media frame ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  border:var(--border) solid var(--line);
  background:linear-gradient(135deg,#0E1729 0%,#121A3D 58%,#0E6B5A 165%);
  aspect-ratio:16/10;
}
.media-frame > img,
.media-frame > picture > img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--plot::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(39,224,176,.14) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(39,224,176,.14) 1px,transparent 1px);
  background-size:34px 34px;
}
.media-frame figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 14px;
  border-top:1px solid var(--line);
  background:rgba(11,16,48,.88);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--mist);
}

/* ---------- motion preference ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .btn:hover,.btn:active{transform:none}
}