:root{
  --ink:#06140E;
  --ink-2:#0B2018;
  --panel:#123125;
  --panel-soft:#0E281E;
  --cyan:#38E1C4;
  --orange:#FF7A2F;
  --slate:#E6ECF2;
  --dim:#9FB2C4;
  --paper:#F4F7F4;
  --text:#C9D8E4;
  --line:#2B4438;
  --warn:#F5C451;
  --rail-w:264px;
  --topbar-h:60px;
  --maxw:1240px;
  --radius:3px;
  --mono:ui-monospace,"JetBrains Mono","IBM Plex Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --sans:"Noto Sans SC","Source Han Sans SC",Inter,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  --ease:cubic-bezier(.2,.7,.2,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

body{
  display:flex;
  flex-direction:column;
  min-height:100vh;
  background-color:var(--ink);
  background-image:
    linear-gradient(to right,rgba(43,68,56,.45) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(43,68,56,.45) 1px,transparent 1px);
  background-size:24px 24px;
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{color:var(--paper);font-weight:800;letter-spacing:-.02em;line-height:1.15}
h1{font-size:clamp(30px,5vw,52px)}
h2{font-size:clamp(24px,3.4vw,36px)}
h3{font-size:clamp(18px,2.2vw,22px)}
strong{color:var(--paper)}

.skip-link{
  position:fixed;
  top:8px;
  left:8px;
  z-index:200;
  transform:translateY(-160%);
  background:var(--cyan);
  color:var(--ink);
  font-weight:700;
  font-size:14px;
  padding:10px 16px;
  border-radius:var(--radius);
  transition:transform .16s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- header : version rail ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  display:flex;
  align-items:center;
  gap:12px;
  min-height:var(--topbar-h);
  padding:0 16px;
  background:rgba(6,20,14,.94);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:saturate(140%) blur(10px);
  backdrop-filter:saturate(140%) blur(10px);
}
.rail-top{display:flex;align-items:center;gap:12px;flex:1 1 auto;min-width:0}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  flex:none;
  width:11px;height:11px;
  border-radius:1px;
  background:linear-gradient(135deg,var(--cyan) 0 50%,var(--orange) 50% 100%);
  box-shadow:0 0 0 3px rgba(56,225,196,.14);
}
.brand-text{display:flex;flex-direction:column;min-width:0;line-height:1.2}
.brand-name{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--paper)}
.brand-sub{
  display:none;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--dim);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.version-badge{
  margin-left:auto;
  flex:none;
  font-family:var(--mono);
  font-size:12px;font-weight:700;letter-spacing:.06em;
  color:var(--cyan);
  background:rgba(56,225,196,.07);
  border:1px solid rgba(56,225,196,.4);
  border-radius:2px;
  padding:3px 8px;
  white-space:nowrap;
}
.nav-toggle{
  flex:none;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 10px;
  border:1px solid var(--line);
  border-radius:2px;
  color:var(--paper);
  background:rgba(18,49,37,.6);
  transition:border-color .12s var(--ease),color .12s var(--ease);
}
.nav-toggle:hover{border-color:rgba(56,225,196,.55);color:var(--cyan)}
.nav-toggle-label{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase}
.nav-toggle-bars{display:flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle-bars i{display:block;height:1.5px;background:currentColor;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.site-header[data-open="true"] .nav-toggle-bars i:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle-bars i:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle-bars i:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

.site-nav{
  position:fixed;
  top:var(--topbar-h);
  right:0;
  width:min(86vw,340px);
  height:calc(100vh - var(--topbar-h));
  display:flex;flex-direction:column;gap:16px;
  padding:20px 18px 30px;
  background:var(--ink-2);
  border-left:1px solid var(--line);
  overflow-y:auto;
  z-index:82;
  visibility:hidden;
  transform:translateX(103%);
  transition:transform .28s var(--ease),visibility .28s linear;
}
.site-header[data-open="true"] .site-nav{transform:none;visibility:visible}
.site-header[data-open="true"]::after{
  content:"";
  position:fixed;
  inset:var(--topbar-h) 0 0 0;
  background:rgba(6,20,14,.66);
  z-index:81;
}
.nav-caption{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}
.nav-list{display:flex;flex-direction:column;gap:2px}
.nav-item{display:block}
.nav-link{
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;
  border-left:2px solid transparent;
  border-radius:0 2px 2px 0;
  color:var(--dim);
  font-size:15px;font-weight:600;
  transition:color .12s var(--ease),background .12s var(--ease),border-color .12s var(--ease);
}
.nav-link:hover{color:var(--paper);background:rgba(56,225,196,.06);border-left-color:rgba(56,225,196,.5)}
.nav-index{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:#6E8779;transition:color .12s var(--ease)}
.nav-label{flex:1 1 auto;min-width:0}
.nav-link[aria-current="page"]{color:var(--paper);background:var(--panel);border-left-color:var(--orange)}
.nav-link[aria-current="page"] .nav-index{color:var(--orange)}
.rail-foot{display:flex;flex-direction:column;gap:8px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 16px;
  font-size:14px;font-weight:700;letter-spacing:.02em;
  border-radius:var(--radius);
  border:1px solid transparent;
  transition:background .12s var(--ease),border-color .12s var(--ease),color .12s var(--ease),transform .12s var(--ease);
}
.btn-primary{background:var(--orange);color:var(--ink);border-color:var(--orange)}
.btn-primary:hover{background:#FF9350;border-color:#FF9350;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--cyan);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--cyan);background:rgba(56,225,196,.08)}

/* ---------- footer ---------- */
.site-footer{margin-top:auto;background:var(--ink-2);border-top:1px solid var(--line)}
.footer-band{border-bottom:1px solid var(--line);background:rgba(6,20,14,.6)}
.band-list{
  display:flex;flex-wrap:wrap;gap:10px 30px;
  max-width:var(--maxw);margin:0 auto;
  padding:14px 20px;
}
.band-item{display:flex;align-items:baseline;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.06em}
.band-key{color:var(--dim);text-transform:uppercase}
.band-val{color:var(--cyan)}
.footer-inner{
  display:grid;gap:28px;
  grid-template-columns:1fr;
  max-width:var(--maxw);margin:0 auto;
  padding:42px 20px;
}
.footer-brand{
  padding-left:14px;
  border-left:2px solid var(--orange);
  min-width:0;
}
.footer-brand-name{font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--paper)}
.footer-brand-note{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--dim);margin-top:8px}
.footer-meta{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--cyan);margin-top:12px;word-break:break-word}
.footer-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 18px}
.footer-col{min-width:0}
.footer-col-title{
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:12px;
}
.footer-list{display:flex;flex-direction:column;gap:9px}
.footer-link{
  display:inline-flex;align-items:baseline;gap:8px;
  color:var(--dim);font-size:15px;
  transition:color .12s var(--ease);
}
.footer-link::before{content:"›";font-family:var(--mono);color:var(--line);transition:color .12s var(--ease)}
.footer-link:hover{color:var(--cyan)}
.footer-link:hover::before{color:var(--orange)}
.footer-contact{min-width:0}
.footer-contact-list{display:flex;flex-direction:column;gap:11px}
.footer-contact-item{display:flex;flex-direction:column;gap:2px}
.footer-contact-key{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.footer-contact-val{font-size:14px;color:var(--text);word-break:break-word}
.footer-legal{
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;align-items:center;
  border-top:1px solid var(--line);
  padding:16px clamp(20px,4vw,60px) 28px;
}
.footer-legal-line{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--dim)}

/* ---------- layout helpers ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.container--narrow{max-width:820px}
.section{position:relative;padding:clamp(42px,6vw,90px) 0}
.section--alt{background:var(--ink-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--paper{background:var(--paper);color:#0A1F17}
.section--paper h1,.section--paper h2,.section--paper h3,.section--paper .section-title{color:#06140E}
.section--paper .section-note,.section--paper .card-body{color:#3E5A50}
.section-head{display:flex;flex-direction:column;gap:10px;margin-bottom:clamp(24px,3vw,40px)}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan)}
.section-title{font-size:clamp(24px,3.4vw,36px);font-weight:800;letter-spacing:-.02em;line-height:1.15;color:var(--paper)}
.section-note{font-size:15px;color:var(--dim);max-width:62ch}
.display-num{
  font-family:var(--mono);font-weight:700;letter-spacing:-.04em;
  font-size:clamp(72px,14vw,220px);line-height:.85;color:var(--paper);
}
.lede{font-size:clamp(16px,1.6vw,19px);color:var(--dim);max-width:60ch}
.prose{max-width:68ch;color:var(--text)}
.prose p{margin:0 0 .9em}
.prose h2,.prose h3{margin:1.3em 0 .5em}
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:18px}
.grid > *{grid-column:span 12;min-width:0}

/* ---------- cards / tags / tables ---------- */
.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px;
  box-shadow:0 1px 0 rgba(0,0,0,.35);
  transition:transform .12s var(--ease),border-color .12s var(--ease),box-shadow .12s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--cyan);box-shadow:0 14px 30px -20px rgba(56,225,196,.6)}
.card--light{background:var(--slate);color:#12261E;border-color:#C7D3DE}
.card--light .card-title{color:#06140E}
.card--light .card-body,.card--light .card-meta{color:#3E5A50}
.card-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:12px}
.card-title{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--paper)}
.card-body{font-size:15px;color:var(--dim)}
.card-meta{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--dim)}
.panel-light{background:var(--slate);color:#12261E;border-radius:var(--radius);padding:20px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  padding:3px 8px;border:1px solid var(--line);border-radius:2px;color:var(--dim);
}
.tag--signal{color:var(--cyan);border-color:rgba(56,225,196,.45)}
.tag--warn{color:var(--warn);border-color:rgba(245,196,81,.45)}
.data-table{width:100%;border-collapse:collapse;font-size:15px}
.data-table th,.data-table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line)}
.data-table th{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--cyan);font-weight:700}
.data-table td{color:var(--text)}
.data-table tbody tr:hover{background:rgba(56,225,196,.05)}

/* ---------- breadcrumbs / filters ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:16px 0;
  font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--dim);
}
.breadcrumbs li{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs li + li::before{content:"/";color:var(--line)}
.breadcrumbs-link{color:var(--dim);transition:color .12s var(--ease)}
.breadcrumbs-link:hover{color:var(--cyan)}
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.filter-chip{
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  padding:7px 12px;border:1px solid var(--line);border-radius:2px;
  color:var(--dim);background:rgba(18,49,37,.6);
  transition:color .12s var(--ease),border-color .12s var(--ease),background .12s var(--ease);
}
.filter-chip:hover{color:var(--paper);border-color:rgba(56,225,196,.5)}
.filter-chip[aria-pressed="true"]{color:var(--ink);background:var(--cyan);border-color:var(--cyan)}
.filter-count{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--dim);margin-left:auto}

/* ---------- media ---------- */
.media-grid{display:grid;grid-template-columns:1fr;gap:16px}
.media-frame{
  position:relative;overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--panel-soft);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-ph{
  display:grid;place-items:center;
  width:100%;height:100%;
  background-color:var(--panel-soft);
  background-image:
    linear-gradient(to right,rgba(56,225,196,.16) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(56,225,196,.16) 1px,transparent 1px);
  background-size:24px 24px;
  color:var(--dim);
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;
}
.media-cap{font-size:13px;color:var(--dim);padding:10px 2px 0}

/* ---------- states & motion ---------- */
.is-hidden{display:none !important}
html.js [data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
html.js [data-reveal].is-in{opacity:1;transform:none}
.grid-drift{animation:grid-drift 12s linear infinite}
@keyframes grid-drift{from{background-position:0 0,0 0}to{background-position:24px 24px,24px 24px}}
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:90;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--orange) 100%);
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .12s linear;
  pointer-events:none;
}

/* ---------- tablet ---------- */
@media (min-width:600px){
  .container{padding:0 28px}
  .media-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (min-width:768px){
  body{font-size:16.5px}
  .brand-sub{display:block}
  .container{padding:0 32px}
  .grid{gap:22px}
}

/* ---------- desktop : fixed version rail ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  .site-header{
    position:fixed;
    inset:0 auto 0 0;
    width:var(--rail-w);
    flex-direction:column;
    align-items:stretch;
    gap:14px;
    min-height:0;
    padding:24px 18px 22px;
    border-right:1px solid var(--line);
    border-bottom:0;
    background:linear-gradient(180deg,#0B2018 0%,#06140E 100%);
    -webkit-backdrop-filter:none;
    backdrop-filter:none;
    overflow:hidden;
  }
  .site-header::before{
    content:"";
    position:absolute;inset:0;
    pointer-events:none;
    opacity:.35;
    background-image:
      linear-gradient(to right,rgba(43,68,56,.8) 1px,transparent 1px),
      linear-gradient(to bottom,rgba(43,68,56,.8) 1px,transparent 1px);
    background-size:24px 24px;
    animation:grid-drift 12s linear infinite;
  }
  .site-header > *{position:relative;z-index:1}
  .rail-top{flex:none;flex-direction:column;align-items:flex-start;gap:12px}
  .version-badge{margin-left:0}
  .nav-toggle{display:none}
  .site-nav{
    position:static;
    width:auto;height:auto;
    flex:1 1 auto;min-height:0;
    padding:0;
    background:none;
    border-left:0;
    overflow:hidden;
    visibility:visible;
    transform:none;
    transition:none;
  }
  .site-header[data-open="true"]::after{display:none}
  .nav-list{overflow-y:auto}
  .rail-foot{margin-top:auto}
  .scroll-progress{left:var(--rail-w)}
  .footer-inner{grid-template-columns:minmax(220px,1.1fr) minmax(0,1.8fr) minmax(230px,1.1fr);gap:44px;padding:52px 32px}
  .band-list{padding:14px 32px}
  .footer-legal{padding-left:32px;padding-right:32px}
  .media-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .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}
}
@media (min-width:1280px){
  .container{padding:0 40px}
  .footer-inner,.band-list{padding-left:40px;padding-right:40px}
  .footer-legal{padding-left:40px;padding-right:40px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html.js [data-reveal]{opacity:1;transform:none}
  .site-header::before{animation:none}
}