:root{
  --ink-900:#061426;
  --ink-800:#0B2239;
  --line-blue:#1E3A52;
  --rock:#2B3540;
  --paper:#F4F0E6;
  --paper-2:#E7E0D2;
  --lime:#C8FF4D;
  --lime-deep:#5E8C00;
  --amber:#FFB648;
  --moss:#7E9B6A;
  --clay:#C46F4E;
  --text-light:#F7FAF4;
  --text-soft:#C4D3E0;
  --text-dim:#8CA2B6;
  --text-dark:#14202B;
  --font-display:'Barlow Condensed','Oswald','Noto Sans SC',sans-serif;
  --font-serif:'Noto Serif SC','Songti SC',serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','IBM Plex Mono','SFMono-Regular',monospace;
  --radius-capsule:999px;
  --shell:1280px;
  --pad:22px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
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;cursor:pointer}
p,li{overflow-wrap:break-word}

body{
  background:var(--ink-900);
  color:var(--text-light);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  border-top:2px solid transparent;
}
h1,h2,h3,h4{line-height:1.25;font-weight:700;letter-spacing:-.01em}
h1,h2{font-family:var(--font-display);letter-spacing:-.02em}
strong{font-weight:700;color:var(--text-light)}
::selection{background:var(--lime);color:var(--ink-900)}
:where(a,button,summary,input,select,textarea,[tabindex]):focus-visible{
  outline:2px solid var(--lime);
  outline-offset:3px;
  border-radius:2px;
}

/* ---------- utilities ---------- */
.visually-hidden{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;
}
.wrap{width:100%;max-width:var(--shell);margin:0 auto;padding:0 var(--pad)}
.section{padding:64px 0}
.mono{font-family:var(--font-mono);font-weight:500;letter-spacing:.08em}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;color:var(--lime);
}
.eyebrow::before{content:"";display:block;width:18px;height:1px;background:var(--lime)}
.rule{height:1px;border:0;margin:0;background:var(--line-blue)}
.stack{display:flex;flex-direction:column;gap:16px}
.grid{display:grid;gap:24px}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.surface-paper{background:var(--paper);color:var(--text-dark)}
.surface-paper h1,.surface-paper h2,.surface-paper h3,.surface-paper h4{color:var(--text-dark)}
.surface-paper a{color:var(--lime-deep)}
.surface-paper strong{color:var(--text-dark)}

/* ---------- buttons & tags ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border:1px solid transparent;border-radius:var(--radius-capsule);
  font-family:var(--font-body);font-size:14px;font-weight:600;line-height:1.4;
  letter-spacing:.02em;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn--primary{background:var(--lime);color:var(--ink-900);border-color:var(--lime)}
.btn--primary:hover{background:#DBFF8B;border-color:#DBFF8B;transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--text-light);border-color:var(--line-blue)}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime)}
.surface-paper .btn--ghost{color:var(--text-dark);border-color:#C7BFAE}
.surface-paper .btn--ghost:hover{border-color:var(--lime-deep);color:var(--lime-deep)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;border:1px solid var(--line-blue);border-radius:3px;
  background:rgba(30,58,82,.35);color:var(--text-dim);
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.12em;text-transform:uppercase;line-height:1.6;
}
.tag--lime{background:var(--lime);border-color:var(--lime);color:var(--ink-900)}
.tag--amber{background:var(--amber);border-color:var(--amber);color:var(--ink-900)}
.tag--clay{background:var(--clay);border-color:var(--clay);color:var(--ink-900)}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:18px 0 0}
.breadcrumb-list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--text-dim);
}
.breadcrumb-list li{display:flex;align-items:center;gap:8px}
.breadcrumb-list li+li::before{content:"/";color:var(--line-blue)}
.breadcrumb-list a{color:var(--text-dim);transition:color .16s ease}
.breadcrumb-list a:hover{color:var(--lime)}
.surface-paper .breadcrumb-list,.surface-paper .breadcrumb-list a{color:#6B6455}
.surface-paper .breadcrumb-list a:hover{color:var(--lime-deep)}
.breadcrumb-current{color:var(--text-light)}
.surface-paper .breadcrumb-current{color:var(--text-dark)}

/* ---------- media containers ---------- */
.media{
  position:relative;display:block;overflow:hidden;isolation:isolate;
  background:var(--rock);border:1px solid var(--line-blue);border-radius:2px;
}
.media img,.media video{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:16/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:4/5}
.media--blueprint{
  background-color:var(--ink-800);
  background-image:
    linear-gradient(rgba(30,58,82,.75) 1px,transparent 1px),
    linear-gradient(90deg,rgba(30,58,82,.75) 1px,transparent 1px);
  background-size:34px 34px;
}
.media-tag{
  position:absolute;left:10px;bottom:10px;z-index:2;
  padding:3px 8px;border-radius:2px;background:var(--lime);color:var(--ink-900);
  font-family:var(--font-mono);font-size:10px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;line-height:1.6;
}

/* ---------- skip link ---------- */
.skip-link{
  position:absolute;left:16px;top:-70px;z-index:300;
  padding:10px 20px;border-radius:var(--radius-capsule);
  background:var(--lime);color:var(--ink-900);
  font-size:14px;font-weight:700;
  transition:top .18s ease;
}
.skip-link:focus{top:12px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,20,38,.95);
  border-bottom:1px solid var(--line-blue);
  transition:box-shadow .24s ease,background-color .24s ease;
}
.site-header[data-scrolled]{
  background:rgba(6,20,38,.99);
  box-shadow:0 14px 36px rgba(0,0,0,.48);
}
.header-rail{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  max-width:var(--shell);margin:0 auto;padding:7px var(--pad);
  border-bottom:1px solid rgba(30,58,82,.6);
  font-family:var(--font-mono);font-size:10px;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--text-dim);
}
.rail-brand{color:var(--lime)}
.rail-meta{text-align:right}
.header-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  max-width:var(--shell);margin:0 auto;padding:10px var(--pad) 12px;
}
.brand-island{display:flex;align-items:center;min-width:0}
.brand{
  display:inline-flex;align-items:center;gap:11px;
  padding:6px 18px 6px 7px;
  border:1px solid var(--line-blue);border-radius:var(--radius-capsule);
  background:var(--ink-800);
  transition:border-color .2s ease,background-color .2s ease;
}
.brand:hover{border-color:rgba(200,255,77,.5);background:#0E2942}
.brand-mark{
  display:grid;place-items:center;
  width:34px;height:34px;flex:0 0 auto;
  border:1px solid var(--lime);border-radius:9px;
  background:rgba(200,255,77,.09);color:var(--lime);
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.1em;
}
.brand-text{display:flex;flex-direction:column;min-width:0;line-height:1.15}
.brand-name{
  font-family:var(--font-display);font-size:19px;font-weight:800;
  letter-spacing:-.01em;color:var(--text-light);
}
.brand-desc{
  margin-top:3px;
  font-family:var(--font-mono);font-size:9.5px;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;color:var(--text-dim);
}
.nav-island{
  display:flex;align-items:center;gap:4px;
  padding:5px;
  border:1px solid var(--line-blue);border-radius:var(--radius-capsule);
  background:var(--ink-800);
}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{display:flex}
.nav-link{
  position:relative;display:block;
  padding:8px 13px;border-radius:var(--radius-capsule);
  font-size:14px;font-weight:500;color:var(--text-light);white-space:nowrap;
  transition:color .18s ease,background-color .18s ease;
}
.nav-link:hover{color:var(--lime);background:rgba(200,255,77,.09)}
.nav-link[aria-current="page"]{color:var(--lime);background:rgba(200,255,77,.1)}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:50%;bottom:1px;
  width:16px;height:3px;margin-left:-8px;border-radius:2px;background:var(--lime);
}
.nav-cta{
  margin-left:4px;padding:9px 17px;border-radius:var(--radius-capsule);
  background:var(--lime);color:var(--ink-900);
  font-size:13px;font-weight:700;letter-spacing:.02em;white-space:nowrap;
  transition:background-color .18s ease,transform .18s ease;
}
.nav-cta:hover{background:#DBFF8B;transform:translateY(-1px)}
.nav-toggle{
  display:none;align-items:center;gap:10px;margin-left:auto;
  padding:9px 16px;
  border:1px solid var(--line-blue);border-radius:var(--radius-capsule);
  background:var(--ink-800);color:var(--text-light);
}
.nav-toggle:hover{border-color:rgba(200,255,77,.5)}
.nav-toggle-label{
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--text-soft);
}
.nav-toggle-bar{
  position:relative;display:block;width:16px;height:2px;border-radius:2px;
  background:var(--lime);
}
.nav-toggle-bar::before,.nav-toggle-bar::after{
  content:"";position:absolute;left:0;width:16px;height:2px;border-radius:2px;
  background:var(--lime);transition:transform .2s ease,top .2s ease;
}
.nav-toggle-bar::before{top:-5px}
.nav-toggle-bar::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after{top:0;transform:rotate(-45deg)}
.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:rgba(30,58,82,.55);overflow:hidden;
}
.scroll-progress-fill{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--lime),var(--amber));
  transition:transform .12s linear;
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-900);
  border-top:1px solid var(--line-blue);
  color:var(--text-light);
}
.footer-inner{max-width:var(--shell);margin:0 auto;padding:56px var(--pad) 26px}
.footer-top{
  display:grid;grid-template-columns:minmax(260px,1.05fr) minmax(0,1.6fr);
  gap:40px;padding-bottom:34px;
  border-bottom:1px solid rgba(30,58,82,.9);
}
.footer-brand{min-width:0}
.footer-logo{
  display:flex;align-items:baseline;gap:10px;
  font-family:var(--font-display);font-size:26px;font-weight:800;
  letter-spacing:-.01em;color:var(--text-light);
}
.footer-badge{
  padding:2px 7px;border-radius:4px;
  background:var(--lime);color:var(--ink-900);
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.12em;
}
.footer-summary{margin-top:14px;max-width:44ch;font-size:14px;line-height:1.85;color:var(--text-dim)}
.footer-cta{margin-top:22px}
.footer-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.footer-col{min-width:0}
.footer-col-title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;color:var(--lime);
}
.footer-links{display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer-links a{color:var(--text-soft);transition:color .16s ease}
.footer-links a:hover{color:var(--lime)}
.footer-contact{
  display:flex;flex-wrap:wrap;gap:14px 40px;
  padding:22px 0;
  border-bottom:1px solid rgba(30,58,82,.9);
}
.contact-line{display:flex;align-items:baseline;gap:10px;font-size:13px;min-width:0}
.contact-label{
  flex:0 0 auto;padding:2px 7px;border:1px solid var(--line-blue);border-radius:3px;
  font-family:var(--font-mono);font-size:10px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--text-dim);
}
.contact-value{
  font-family:var(--font-mono);font-size:12.5px;font-weight:500;
  letter-spacing:.02em;color:var(--text-light);overflow-wrap:anywhere;
}
.footer-note{margin-top:16px;max-width:78ch;font-size:12.5px;line-height:1.8;color:var(--text-dim)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
  margin-top:22px;padding-top:18px;
  border-top:1px solid rgba(30,58,82,.6);
  font-family:var(--font-mono);font-size:11.5px;font-weight:500;
  letter-spacing:.06em;color:var(--text-dim);
}
.footer-copy{color:var(--text-soft)}
.footer-icp{color:var(--text-dim)}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .brand-desc{display:none}
  .nav-link{padding:8px 10px;font-size:13.5px}
  .nav-cta{padding:9px 14px;font-size:12.5px}
}
@media (max-width:1000px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-top{grid-template-columns:1fr;gap:32px}
}
@media (max-width:900px){
  :root{--pad:16px}
  .header-rail{display:none}
  .header-inner{flex-wrap:wrap;padding:10px var(--pad) 12px;gap:10px}
  .nav-toggle{display:inline-flex}
  .nav-island{
    position:absolute;top:calc(100% + 8px);left:12px;right:12px;
    display:none;flex-direction:column;align-items:stretch;gap:6px;
    padding:10px;border-radius:18px;border-color:rgba(200,255,77,.28);
    background:var(--ink-800);
    box-shadow:0 26px 52px rgba(0,0,0,.55);
  }
  .nav-island[data-open]{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:3px}
  .nav-link{padding:11px 14px;border-radius:12px;font-size:15px}
  .nav-link[aria-current="page"]::after{
    left:6px;right:auto;top:50%;bottom:auto;
    width:3px;height:16px;margin:-8px 0 0 0;border-radius:2px;
  }
  .nav-cta{margin:6px 0 2px;padding:12px 16px;border-radius:12px;text-align:center}
  .section{padding:46px 0}
  .grid--2,.grid--3{grid-template-columns:1fr}
  .footer-inner{padding:40px var(--pad) 22px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 20px}
  .footer-contact{flex-direction:column;gap:12px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  .brand-name{font-size:17px}
  .brand-mark{width:30px;height:30px;font-size:10px}
  .footer-grid{grid-template-columns:1fr}
  .footer-logo{font-size:22px}
}
@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;
  }
}