*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
address{font-style:normal}

:root{
  --ink:#0A1A2F;
  --ink-2:#102A43;
  --ink-3:#0B1E33;
  --ink-4:#061019;
  --cyan:#00E5FF;
  --orange:#FF6B2C;
  --mint:#3DDC97;
  --moss:#7C8C6F;
  --clay:#B86B4B;
  --stone:#8A94A6;
  --paper:#F4F1EA;
  --rail-w:264px;
  --header-h:68px;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --hair:rgba(244,241,234,.14);
  --hair-strong:rgba(244,241,234,.30);
  --shadow-block:8px 8px 0 rgba(0,0,0,.38);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- base ---------- */
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--paper);
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(0,229,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,229,255,.045) 1px,transparent 1px),
    radial-gradient(120% 70% at 84% -10%,rgba(0,229,255,.10),transparent 62%),
    radial-gradient(90% 60% at -10% 102%,rgba(255,107,44,.09),transparent 62%);
  background-size:72px 72px,72px 72px,100% 100%,100% 100%;
  background-attachment:fixed;
  min-height:100vh;
  padding-left:var(--rail-w);
  -webkit-font-smoothing:antialiased;
}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
#main-content:focus-visible{outline:none}

/* ---------- utilities ---------- */
.shell{width:100%;max-width:1240px;margin-inline:auto;padding-inline:clamp(18px,4vw,56px)}
.section{padding-block:clamp(48px,7vw,96px)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.title-xl{font-size:clamp(2.4rem,5.4vw,4.6rem);font-weight:900;line-height:1.06;letter-spacing:-.02em}
.title-lg{font-size:clamp(1.7rem,3.2vw,2.8rem);font-weight:900;line-height:1.14;letter-spacing:-.01em}
.title-md{font-size:clamp(1.15rem,1.8vw,1.5rem);font-weight:800;line-height:1.35}
.lede{font-size:clamp(1rem,1.4vw,1.15rem);line-height:1.85;color:rgba(244,241,234,.78);max-width:62ch}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--cyan)}
.annotation{writing-mode:vertical-rl;font-family:var(--font-mono);font-size:11px;letter-spacing:.32em;color:var(--moss);text-transform:uppercase}

.breadcrumb{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--stone)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--moss)}
.breadcrumb a{border-bottom:1px solid rgba(0,229,255,.35);padding-bottom:1px;transition:color .18s,border-color .18s}
.breadcrumb a:hover{color:var(--cyan);border-color:var(--cyan)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;font-size:14px;font-weight:800;letter-spacing:.04em;text-align:center;
  border:2px solid var(--paper);
  box-shadow:5px 5px 0 rgba(0,0,0,.45);
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),background-color .16s,color .16s,border-color .16s;
}
.btn:hover{transform:translate(2px,2px);box-shadow:2px 2px 0 rgba(0,0,0,.45)}
.btn:active{transform:translate(4px,4px);box-shadow:0 0 0 rgba(0,0,0,.45)}
.btn--primary{background:var(--orange);color:#12100E;border-color:#12100E;box-shadow:5px 5px 0 rgba(0,229,255,.72)}
.btn--primary:hover{box-shadow:2px 2px 0 rgba(0,229,255,.72)}
.btn--ghost{background:transparent;color:var(--paper);border-color:rgba(244,241,234,.42);box-shadow:5px 5px 0 rgba(0,0,0,.42)}
.btn--ghost:hover{color:var(--cyan);border-color:var(--cyan)}

/* ---------- header / rail ---------- */
.skip-link{
  position:fixed;top:12px;left:12px;z-index:300;
  padding:10px 16px;font-weight:800;font-size:14px;
  background:var(--cyan);color:var(--ink);
  border:2px solid var(--ink);box-shadow:4px 4px 0 var(--orange);
  transform:translateY(-220%);transition:transform .2s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}

.site-header{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);
  display:flex;flex-direction:column;z-index:60;
  background:linear-gradient(180deg,var(--ink-2) 0%,var(--ink-3) 56%,var(--ink) 100%);
  border-right:2px solid rgba(0,229,255,.20);
}

.rail-head{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:20px 18px 16px;
  border-bottom:2px solid rgba(244,241,234,.10);
}

.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  position:relative;flex:none;width:40px;height:40px;
  background:var(--cyan);
  box-shadow:4px 4px 0 rgba(255,107,44,.85);
  overflow:hidden;
}
.brand-mark::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,transparent 46%,var(--ink) 46% 54%,transparent 54%);
}
.brand-mark::after{
  content:"";position:absolute;left:6px;bottom:6px;width:9px;height:9px;background:var(--ink);
}
.brand-text{min-width:0}
.brand-line{display:block;font-weight:900;font-size:16px;line-height:1.2;letter-spacing:.04em;color:var(--paper)}
.brand-sub{display:block;margin-top:4px;font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:var(--mint)}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:8px 11px;border:2px solid rgba(0,229,255,.45);
  color:var(--cyan);font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  transition:background-color .18s,color .18s,border-color .18s;
}
.nav-toggle:hover{background:rgba(0,229,255,.12)}
.nav-toggle-bars{position:relative;width:18px;height:12px;flex:none}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:currentColor;
  transition:transform .2s var(--ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{bottom:0}
.site-header[data-open] .nav-toggle-bars::before{transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{transform:translateY(-5px) rotate(-45deg)}
.nav-toggle-label{line-height:1}

.site-nav{flex:1 1 auto;min-height:0;overflow-y:auto;padding:16px 12px}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-item{display:block}
.nav-link{
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;font-size:15px;font-weight:600;
  color:rgba(244,241,234,.70);
  border:2px solid transparent;
  transition:color .18s var(--ease),background-color .18s,border-color .18s,transform .18s var(--ease);
}
.nav-index{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--moss);transition:color .18s}
.nav-label{line-height:1.35}
.nav-link:hover{color:var(--paper);background:rgba(0,229,255,.07);border-color:rgba(0,229,255,.30);transform:translateX(2px)}
.nav-link:hover .nav-index{color:var(--cyan)}
.nav-link[aria-current="page"]{
  color:var(--paper);background:rgba(0,229,255,.12);
  border-color:var(--cyan);box-shadow:4px 4px 0 rgba(0,0,0,.45);
}
.nav-link[aria-current="page"] .nav-index{color:var(--cyan)}
.nav-link.is-active:not([aria-current="page"]){color:var(--paper);border-color:rgba(255,107,44,.55)}
.nav-link.is-active:not([aria-current="page"]) .nav-index{color:var(--orange)}

.rail-status{
  flex:none;padding:16px 18px 22px;
  border-top:2px solid rgba(244,241,234,.10);
  background:rgba(10,26,47,.62);
}
.status-label{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:var(--stone)}
.status-value{
  margin-top:2px;font-family:var(--font-mono);font-size:30px;font-weight:700;line-height:1.15;
  color:var(--cyan);font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.status-note{display:flex;align-items:center;gap:8px;margin-top:6px;font-size:12px;color:var(--mint)}
.rail-cta{width:100%;margin-top:14px;padding:11px 14px;font-size:13px;box-shadow:4px 4px 0 rgba(0,229,255,.7)}
.rail-cta:hover{box-shadow:2px 2px 0 rgba(0,229,255,.7)}

.dot{
  flex:none;width:8px;height:8px;border-radius:50%;background:var(--mint);
  animation:dot-pulse 2.4s ease-in-out infinite;
}
@keyframes dot-pulse{
  0%,100%{box-shadow:0 0 0 0 rgba(61,220,151,.55)}
  50%{box-shadow:0 0 0 6px rgba(61,220,151,0)}
}

.scroll-progress{
  position:fixed;top:0;left:var(--rail-w);right:0;height:3px;z-index:70;
  background:rgba(244,241,234,.10);pointer-events:none;
}
.progress-fill{
  display:block;height:100%;width:var(--progress,0%);
  background:linear-gradient(90deg,var(--cyan),var(--mint) 58%,var(--orange));
  transition:width .12s linear;
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  border-top:2px solid rgba(0,229,255,.34);
  background:linear-gradient(180deg,rgba(16,42,67,.92),rgba(6,16,25,.98));
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;height:6px;width:min(300px,42%);
  background:linear-gradient(90deg,var(--cyan),var(--orange) 72%,transparent);
}
.footer-top{
  display:grid;grid-template-columns:minmax(220px,.95fr) minmax(0,2.1fr);
  gap:clamp(28px,4vw,56px);align-items:start;
  padding-block:clamp(38px,5vw,70px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.footer-mark{
  position:relative;width:38px;height:38px;background:var(--clay);
  box-shadow:5px 5px 0 rgba(0,229,255,.42);overflow:hidden;
}
.footer-mark::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,transparent 46%,var(--ink-4) 46% 54%,transparent 54%);
}
.footer-mark::after{content:"";position:absolute;right:6px;top:6px;width:8px;height:8px;background:var(--mint)}
.footer-name{font-weight:900;font-size:18px;letter-spacing:.05em}
.footer-tagline{font-size:14px;line-height:1.72;color:rgba(244,241,234,.70);max-width:30ch}
.footer-status{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 10px;border:1px solid rgba(61,220,151,.35);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;color:var(--mint);
}
.footer-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:22px 18px}
.footer-col{display:flex;flex-direction:column;gap:7px}
.footer-col-title{
  display:inline-block;padding-bottom:6px;font-size:15px;font-weight:800;color:var(--paper);
  border-bottom:2px solid rgba(0,229,255,.30);
  transition:color .18s,border-color .18s;
}
.footer-col-title:hover{color:var(--cyan);border-color:var(--cyan)}
.footer-col-desc{font-size:12.5px;line-height:1.65;color:var(--stone)}

.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;
  gap:18px 32px;padding-block:22px 34px;
  border-top:2px solid rgba(244,241,234,.12);
  font-size:13px;color:var(--stone);
}
.footer-legal{display:grid;gap:6px;max-width:74ch}
.footer-legal-links{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--stone)}
.footer-legal-links a{color:var(--paper);border-bottom:1px solid rgba(0,229,255,.45);padding-bottom:1px;transition:color .18s,border-color .18s}
.footer-legal-links a:hover{color:var(--cyan);border-color:var(--cyan)}
.footer-icp{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--stone)}
.footer-contact{font-family:var(--font-mono);font-size:12.5px;line-height:1.7;color:rgba(244,241,234,.80)}
.footer-note{font-size:12px;line-height:1.7;color:var(--stone)}
.footer-copy{
  display:grid;gap:6px;text-align:right;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--stone);
}
.footer-copy a{color:var(--paper);border-bottom:1px solid rgba(255,107,44,.60);padding-bottom:1px}
.footer-copy a:hover{color:var(--orange);border-color:var(--orange)}

/* ---------- page components ---------- */
.panel{
  position:relative;
  padding:clamp(18px,2.4vw,30px);
  background:var(--ink-2);
  border:2px solid var(--hair);
  box-shadow:var(--shadow-block);
}
.panel--focus{border-color:var(--cyan);box-shadow:8px 8px 0 rgba(0,229,255,.20)}
.panel--paper{background:var(--paper);color:var(--ink);border-color:var(--ink);box-shadow:8px 8px 0 rgba(255,107,44,.55)}
.panel--paper .lede,.panel--paper .stat-label{color:rgba(10,26,47,.72)}
.panel--paper .stat-value{color:#0B6E84}
.panel--accent{border-color:var(--orange);box-shadow:8px 8px 0 rgba(255,107,44,.22)}

.data-strip{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:clamp(14px,3vw,40px);
  padding:16px clamp(18px,3vw,32px);
  background:linear-gradient(90deg,rgba(0,229,255,.14),rgba(16,42,67,.55) 46%,rgba(255,107,44,.14));
  border-block:2px solid rgba(0,229,255,.34);
}

.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;font-size:13px;font-weight:700;
  color:rgba(244,241,234,.82);
  background:rgba(244,241,234,.05);
  border:2px solid rgba(244,241,234,.24);
  transition:color .16s,background-color .16s,border-color .16s,transform .16s var(--ease);
}
.chip:hover{color:var(--paper);border-color:rgba(0,229,255,.55);transform:translateY(-1px)}
.chip[aria-pressed="true"]{background:var(--cyan);color:var(--ink);border-color:var(--cyan);box-shadow:4px 4px 0 rgba(0,0,0,.40)}

.tag{
  display:inline-block;padding:4px 10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--cyan);border:1px solid currentColor;
}
.tag--mint{color:var(--mint)}
.tag--clay{color:var(--clay)}
.tag--moss{color:var(--moss)}

.stat{display:flex;flex-direction:column;gap:4px}
.stat-value{font-family:var(--font-mono);font-size:clamp(1.6rem,3vw,2.6rem);font-weight:700;line-height:1.05;color:var(--cyan);font-variant-numeric:tabular-nums}
.stat-label{font-size:12px;letter-spacing:.12em;color:var(--stone)}

.media-frame{
  position:relative;overflow:hidden;aspect-ratio:16/9;
  background:linear-gradient(140deg,var(--ink-3),var(--ink));
  border:2px solid rgba(244,241,234,.18);
  box-shadow:10px 10px 0 rgba(0,0,0,.35);
}
.media-frame>img{width:100%;height:100%;object-fit:cover;filter:saturate(1.06) contrast(1.06)}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(158deg,rgba(0,229,255,.20),transparent 44%,rgba(10,26,47,.58));
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(14px,2vw,28px)}
.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-12{grid-column:span 12}

/* ---------- reveal ---------- */
.js-reveal [data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.js-reveal [data-reveal].is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .footer-top{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}

@media (max-width:960px){
  body{padding-left:0;padding-top:var(--header-h);background-attachment:scroll}
  .site-header{
    top:0;right:0;left:0;bottom:auto;width:auto;
    border-right:0;border-bottom:2px solid rgba(0,229,255,.24);
    box-shadow:0 10px 24px rgba(4,12,22,.55);
  }
  .rail-head{min-height:var(--header-h);padding:10px 16px;border-bottom:0}
  .nav-toggle{display:inline-flex}
  .site-nav{
    display:none;flex:none;max-height:calc(100vh - var(--header-h) - 130px);
    overflow-y:auto;padding:12px 14px 14px;
    border-top:2px solid rgba(244,241,234,.12);
    background:var(--ink-3);
  }
  .site-header[data-open] .site-nav{display:block}
  .rail-status{display:none;border-top:2px solid rgba(244,241,234,.12);background:rgba(10,26,47,.85)}
  .site-header[data-open] .rail-status{display:block}
  .rail-status[data-] {}
  .status-value{font-size:26px}
  .rail-cta{box-shadow:4px 4px 0 rgba(0,229,255,.6)}
  .scroll-progress{left:0}
  .grid-12{grid-template-columns:1fr}
  .span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-12{grid-column:auto}
}

@media (max-width:720px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-copy{text-align:left}
  .footer-contact{font-size:12px}
  .brand-line{font-size:15px}
  .brand-sub{letter-spacing:.14em}
}

@media (max-width:420px){
  .footer-grid{grid-template-columns:1fr}
  .nav-toggle-label{display:none}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .dot{animation:none}
  .js-reveal [data-reveal]{opacity:1;transform:none}
  .btn:hover,.nav-link:hover,.chip:hover{transform:none}
}