:root{
  --ink-green:#063B32;
  --night-blue:#071A2B;
  --cyan:#43F5D7;
  --signal:#FF5C35;
  --mist:#B8F5E8;
  --paper:#F4FBF7;
  --gray-green:#2B5A50;
  --ink:#031714;
  --amber:#FFD166;
  --rail-w:268px;
  --shell:1180px;
  --edge:clamp(18px,4vw,48px);
  --shadow-hard:8px 8px 0 rgba(3,23,20,.85);
  --shadow-neon:0 0 0 1px rgba(67,245,215,.45), 0 18px 40px rgba(3,23,20,.45);
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --radius:2px;
  --dur:.28s;
  --ease:cubic-bezier(.22,.7,.24,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--paper);
  background:
    radial-gradient(1200px 620px at 88% -8%, rgba(67,245,215,.16), transparent 62%),
    radial-gradient(900px 520px at 8% 110%, rgba(255,92,53,.10), transparent 60%),
    linear-gradient(168deg,var(--night-blue) 0%,var(--ink-green) 58%,#041F1B 100%);
  background-attachment:fixed;
  min-height:100vh;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--font-body);line-height:1.14;margin:0;font-weight:900;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;color:inherit}
img,svg,video{max-width:100%;display:block}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
::selection{background:var(--cyan);color:var(--ink)}
.skip-link{
  position:fixed;top:8px;left:8px;z-index:200;
  transform:translateY(-160%);
  background:var(--cyan);color:var(--ink);
  padding:10px 18px;font-weight:700;
  border:2px solid var(--ink);
  box-shadow:var(--shadow-hard);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus{transform:translateY(0)}
.shell{width:min(var(--shell),100% - (var(--edge) * 2));margin-inline:auto}
.shell-narrow{width:min(820px,100% - (var(--edge) * 2));margin-inline:auto}
.shell-wide{width:min(1460px,100% - (var(--edge) * 2));margin-inline:auto}
.site-main{display:block;padding-block:clamp(28px,5vw,72px)}
/* ---------- header rail ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:linear-gradient(180deg, rgba(6,59,50,.97), rgba(6,59,50,.86));
  border-bottom:3px solid var(--ink);
  color:var(--paper);
  backdrop-filter:blur(12px);
}
.scroll-meter{
  position:absolute;left:0;bottom:-3px;height:3px;width:100%;
  transform:scaleX(var(--meter,0));transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--signal));
  transition:transform .1s linear;
}
.header-rail{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  width:min(1460px,100% - (var(--edge) * 2));
  margin-inline:auto;
  padding-block:14px;
}
.rail-brand{min-width:0}
.brand-link{display:inline-flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  display:grid;place-items:center;
  width:52px;height:52px;flex:0 0 auto;
  font-family:var(--font-mono);font-size:15px;font-weight:700;letter-spacing:.04em;
  color:var(--ink);background:var(--cyan);
  border:2px solid var(--ink);
  box-shadow:4px 4px 0 var(--ink);
  transform:skewX(-6deg);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-size:1.18rem;font-weight:900;letter-spacing:.02em;line-height:1.2}
.rail-tagline{
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;
  color:var(--mist);text-transform:uppercase;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.nav-toggle{
  display:none;
  align-items:center;gap:10px;
  background:transparent;border:2px solid var(--cyan);color:var(--cyan);
  padding:9px 14px;font-family:var(--font-mono);font-size:.74rem;letter-spacing:.14em;
  cursor:pointer;border-radius:var(--radius);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{background:var(--cyan);color:var(--ink)}
.nav-toggle-bars{
  position:relative;display:block;width:20px;height:2px;background:currentColor;
  box-shadow:0 -6px 0 currentColor,0 6px 0 currentColor;
}
.nav-toggle-label{line-height:1}
.nav-rail{
  display:flex;align-items:center;gap:clamp(10px,1.6vw,26px);
  flex:1 1 auto;justify-content:flex-end;min-width:0;
}
.nav-list{display:flex;align-items:center;gap:clamp(4px,1vw,14px);flex-wrap:nowrap}
.nav-link{
  position:relative;
  display:flex;align-items:baseline;gap:7px;
  padding:9px 10px 8px;
  border:2px solid transparent;
  font-size:.9rem;font-weight:700;color:var(--paper);
  white-space:nowrap;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.nav-index{font-family:var(--font-mono);font-size:.6rem;color:var(--cyan);letter-spacing:.08em}
.nav-link:hover{
  color:var(--cyan);border-color:var(--cyan);
  transform:translateY(-2px);
}
.nav-link[aria-current="page"]{
  color:var(--ink);background:var(--cyan);
  border-color:var(--ink);box-shadow:4px 4px 0 var(--ink);
}
.nav-link[aria-current="page"] .nav-index{color:var(--ink)}
.rail-foot{display:flex;flex-direction:column;align-items:flex-end;gap:4px;flex:0 0 auto}
.header-cta{
  display:inline-block;
  background:var(--signal);color:#1A0A05;
  border:2px solid var(--ink);box-shadow:4px 4px 0 var(--ink);
  padding:8px 16px;font-weight:900;font-size:.88rem;letter-spacing:.02em;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.header-cta:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--ink)}
.rail-note{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.12em;color:var(--mist)}
/* ---------- shared type & buttons ---------- */
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--cyan);
  border:1px solid rgba(67,245,215,.5);
  padding:4px 10px;background:rgba(67,245,215,.07);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;border:2px solid var(--ink);
  font-weight:900;font-size:.95rem;line-height:1.2;
  cursor:pointer;border-radius:var(--radius);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn-primary{background:var(--cyan);color:var(--ink);box-shadow:6px 6px 0 var(--ink)}
.btn-primary:hover{transform:translate(-2px,-2px);box-shadow:9px 9px 0 var(--ink)}
.btn-ghost{background:transparent;color:var(--paper);border-color:var(--mist);box-shadow:6px 6px 0 rgba(3,23,20,.9)}
.btn-ghost:hover{background:var(--mist);color:var(--ink);transform:translate(-2px,-2px)}
.btn-signal{background:var(--signal);color:#1A0A05;box-shadow:6px 6px 0 var(--ink)}
.btn-signal:hover{transform:translate(-2px,-2px);box-shadow:9px 9px 0 var(--ink)}
.breadcrumb{margin-bottom:clamp(16px,3vw,32px)}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.1em;color:var(--mist)}
.breadcrumb-item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--cyan)}
.breadcrumb-item a{color:var(--mist)}
.breadcrumb-item a:hover{color:var(--cyan);text-decoration:underline}
.breadcrumb-item[aria-current="page"]{color:var(--cyan)}
/* ---------- sections, panels, cards ---------- */
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:clamp(18px,3vw,34px)}
.section-title{font-size:clamp(1.5rem,3.2vw,2.4rem);letter-spacing:-.015em}
.section-note{max-width:52ch;color:var(--mist);font-size:.95rem}
.panel{
  background:rgba(43,90,80,.28);
  border:3px solid var(--ink);
  box-shadow:var(--shadow-hard);
  padding:clamp(20px,3vw,34px);
}
.panel-ink{background:linear-gradient(150deg,rgba(7,26,43,.94),rgba(6,59,50,.92));border-color:rgba(67,245,215,.4);box-shadow:var(--shadow-neon)}
.panel-paper{background:var(--paper);color:var(--ink);border-color:var(--ink);box-shadow:var(--shadow-hard)}
.signal-card{
  position:relative;
  background:linear-gradient(160deg,rgba(67,245,215,.10),rgba(7,26,43,.55));
  border:2px solid rgba(67,245,215,.42);
  box-shadow:var(--shadow-neon);
  padding:clamp(18px,2.4vw,26px);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.signal-card:hover{transform:translateY(-4px);border-color:var(--cyan);box-shadow:0 0 0 1px var(--cyan),0 24px 48px rgba(3,23,20,.6)}
.meta-row{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:8px 0;border-bottom:1px dashed rgba(184,245,232,.22)}
.meta-row:last-child{border-bottom:0}
.meta-key{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);flex:0 0 auto}
.meta-val{font-family:var(--font-mono);font-size:.9rem;color:var(--paper)}
.tag{
  display:inline-block;font-family:var(--font-mono);font-size:.64rem;letter-spacing:.12em;
  padding:3px 9px;border:1px solid currentColor;text-transform:uppercase;
}
.tag-signal{color:var(--signal);background:rgba(255,92,53,.12)}
.tag-amber{color:var(--amber);background:rgba(255,209,102,.12)}
.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:clamp(16px,2.4vw,28px)}
.split{display:grid;grid-template-columns:1.6fr .9fr;gap:clamp(20px,3.4vw,48px);align-items:start}
.split-reverse{grid-template-columns:.9fr 1.6fr}
@media (max-width:900px){.split,.split-reverse{grid-template-columns:1fr}}
/* ---------- timeline & logs ---------- */
.timeline{display:grid;gap:0;border-left:3px solid rgba(67,245,215,.35);padding-left:22px}
.timeline-item{position:relative;padding:0 0 26px}
.timeline-item:last-child{padding-bottom:0}
.timeline-dot{
  position:absolute;left:-33px;top:6px;width:15px;height:15px;
  background:var(--night-blue);border:3px solid var(--cyan);transform:rotate(45deg);
}
.log-list{display:grid;gap:12px}
.log-item{
  display:flex;flex-wrap:wrap;gap:10px 18px;align-items:baseline;
  padding:12px 16px;
  background:rgba(7,26,43,.5);
  border-left:4px solid var(--cyan);
}
.log-item .meta-key{color:var(--cyan)}
.data-table{width:100%;border-collapse:collapse;font-size:.88rem}
.data-table th,.data-table td{
  text-align:left;padding:10px 12px;border-bottom:1px solid rgba(184,245,232,.18);
  vertical-align:top;
}
.data-table th{
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);background:rgba(67,245,215,.07);
}
.data-table tbody tr:hover{background:rgba(67,245,215,.06)}
/* ---------- media ---------- */
.media-frame{
  position:relative;overflow:hidden;
  border:3px solid var(--ink);
  box-shadow:var(--shadow-hard);
  background:
    linear-gradient(135deg,rgba(67,245,215,.22),rgba(7,26,43,.9) 55%,rgba(255,92,53,.18)),
    repeating-linear-gradient(115deg,rgba(184,245,232,.10) 0 2px,transparent 2px 22px);
  aspect-ratio:16/10;
  min-height:160px;
}
.media-frame-wide{aspect-ratio:21/9}
.media-frame-tall{aspect-ratio:4/5}
.media-frame img{width:100%;height:100%;object-fit:cover;display:block}
/* ---------- reveal & motion ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
/* ---------- footer ---------- */
.site-footer{
  margin-top:clamp(48px,8vw,110px);
  background:var(--paper);color:var(--ink);
  border-top:4px solid var(--ink);
  position:relative;
}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr .7fr .7fr 1.1fr;
  gap:clamp(20px,3vw,44px);
  padding-block:clamp(32px,5vw,64px);
}
.footer-brand{display:flex;flex-direction:column;gap:16px;min-width:0}
.footer-brand-link{color:var(--ink)}
.footer-brand .brand-mark{background:var(--ink-green);color:var(--cyan);border-color:var(--ink);box-shadow:4px 4px 0 var(--ink)}
.footer-brand .brand-name{color:var(--ink)}
.footer-brand .rail-tagline{color:var(--gray-green)}
.footer-lead{max-width:40ch;font-size:.94rem;color:#123A32}
.footer-contact{display:grid;gap:6px;border-top:2px solid var(--ink);padding-top:14px}
.footer-contact-row{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px;font-size:.88rem}
.footer-contact .meta-key{color:var(--ink);background:var(--gray-green);color:var(--paper);padding:2px 6px}
.footer-note{color:#245247;font-family:var(--font-mono);font-size:.72rem}
.footer-col{min-width:0}
.footer-col-wide{display:flex;flex-direction:column;gap:14px}
.footer-title{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--ink);margin-bottom:14px;padding-bottom:8px;border-bottom:2px solid var(--ink);
}
.footer-links{display:grid;gap:9px}
.footer-link{font-size:.92rem;font-weight:700;color:#0B322B;border-bottom:2px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.footer-link:hover{color:var(--signal);border-color:var(--signal)}
.footer-update{
  display:grid;gap:4px;
  padding:14px 16px;
  background:var(--ink-green);color:var(--paper);
  border:3px solid var(--ink);box-shadow:6px 6px 0 var(--ink);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.footer-update:hover{transform:translate(-2px,-2px);box-shadow:9px 9px 0 var(--ink);background:var(--night-blue)}
.footer-update-label{font-weight:900;font-size:1.02rem}
.footer-update-index{font-family:var(--font-mono);font-size:.64rem;letter-spacing:.18em;color:var(--cyan)}
.footer-update-note{font-family:var(--font-mono);font-size:.66rem;color:var(--mist)}
.footer-cta{align-self:flex-start;box-shadow:5px 5px 0 var(--ink)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding-block:20px 26px;
  border-top:2px solid var(--ink);
}
.footer-legal{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px}
.legal-links{display:flex;flex-wrap:wrap;gap:8px 20px}
.footer-icp{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:#245247}
.footer-copy{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.06em;color:#245247}
.to-top{
  position:fixed;right:clamp(14px,2.4vw,28px);bottom:clamp(14px,2.4vw,28px);z-index:90;
  display:inline-flex;align-items:center;gap:6px;
  background:var(--ink-green);color:var(--cyan);
  border:3px solid var(--ink);box-shadow:5px 5px 0 var(--ink);
  padding:10px 14px;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.12em;
  cursor:pointer;opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--cyan);color:var(--ink)}
/* ---------- desktop rail layout ---------- */
@media (min-width:1024px){
  .site-header{
    position:fixed;left:0;top:0;bottom:0;
    width:var(--rail-w);
    border-bottom:0;border-right:3px solid var(--ink);
    background:linear-gradient(185deg,var(--ink-green),#041F1B 82%);
    display:flex;
  }
  .scroll-meter{left:auto;right:-3px;bottom:auto;top:0;width:3px;height:100%;transform:scaleY(var(--meter,0));transform-origin:50% 0;background:linear-gradient(180deg,var(--cyan),var(--signal))}
  .header-rail{
    display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;width:100%;padding:26px 22px 22px;
  }
  .rail-brand{margin-bottom:32px}
  .brand-link{gap:12px}
  .brand-mark{width:56px;height:56px}
  .brand-text{white-space:normal}
  .rail-tagline{white-space:normal;line-height:1.5;letter-spacing:.1em}
  .nav-toggle{display:none}
  .nav-rail{
    display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;flex:1 1 auto;
  }
  .nav-list{display:flex;flex-direction:column;align-items:stretch;gap:6px}
  .nav-link{
    justify-content:flex-start;
    border-left:4px solid transparent;
    border-top:0;border-right:0;border-bottom:0;
    padding:11px 10px;
    width:100%;
  }
  .nav-link:hover{transform:translateX(4px);border-color:transparent;border-left-color:var(--cyan);color:var(--cyan)}
  .nav-link[aria-current="page"]{
    border:0;border-left:4px solid var(--ink);
    box-shadow:4px 4px 0 rgba(3,23,20,.75);transform:none;
  }
  .rail-foot{margin-top:auto;padding-top:22px;align-items:stretch;gap:10px}
  .header-cta{text-align:center}
  .rail-note{text-align:center}
  .site-main{margin-left:var(--rail-w);min-height:100vh}
  .site-footer{margin-left:var(--rail-w)}
  .to-top{right:28px}
}
/* ---------- tablet / mobile drawer ---------- */
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-rail{
    position:fixed;inset:0 0 auto auto;
    top:0;right:0;z-index:120;
    width:min(420px,92vw);height:100dvh;
    display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:8px;
    padding:86px 22px 26px;
    background:linear-gradient(190deg,var(--ink-green),var(--night-blue) 74%);
    border-left:4px solid var(--ink);
    box-shadow:-18px 0 48px rgba(3,23,20,.65);
    transform:translateX(104%);
    visibility:hidden;overflow-y:auto;
    transition:transform .34s var(--ease),visibility .34s;
  }
  [data-open] .nav-rail{transform:translateX(0);visibility:visible}
  .nav-list{flex-direction:column;align-items:stretch;gap:6px;width:100%}
  .nav-link{
    justify-content:flex-start;width:100%;
    border-left:4px solid transparent;border-top:0;border-right:0;border-bottom:0;
    padding:14px 12px;font-size:1rem;
  }
  .nav-link:hover{transform:translateX(4px);border-left-color:var(--cyan);border-color:transparent}
  .nav-link[aria-current="page"]{border:0;border-left:4px solid var(--ink);box-shadow:4px 4px 0 rgba(3,23,20,.75)}
  .rail-foot{margin-top:16px;align-items:stretch;padding-top:14px;border-top:1px dashed rgba(184,245,232,.28)}
  .header-cta{text-align:center}
  .rail-note{text-align:center}
  .nav-toggle[aria-expanded="true"]{background:var(--cyan);color:var(--ink)}
  .nav-toggle[aria-expanded="true"] .nav-toggle-bars{box-shadow:0 0 0 currentColor;transform:rotate(45deg)}
  .nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{content:"";position:absolute;inset:0;background:currentColor;transform:rotate(90deg)}
  .nav-toggle[aria-expanded="true"] .nav-toggle-label{color:var(--ink)}
}
@media (max-width:1023px) and (min-width:721px){
  .footer-top{grid-template-columns:1.4fr 1fr 1fr}
  .footer-col-wide{grid-column:1 / -1}
}
@media (max-width:720px){
  body{font-size:15px}
  .header-rail{padding-block:12px}
  .brand-mark{width:44px;height:44px;font-size:13px}
  .brand-name{font-size:1.04rem}
  .rail-tagline{font-size:.58rem;letter-spacing:.08em;max-width:46vw}
  .footer-top{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-cta{width:100%}
  .footer-legal{gap:8px}
  .to-top{font-size:.64rem;padding:9px 11px}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
  .nav-rail{transition:none}
}