:root{
  --bg-root:#071F16;
  --bg-main:#0B3D2E;
  --bg-panel:#145A43;
  --bg-live:#2B6B54;
  --accent:#FF6B35;
  --gold:#FFD700;
  --gray:#A8A29E;
  --paper:#FBFAF5;
  --sand:#F2E9D8;
  --line:rgba(255,255,255,0.2);
  --line-strong:rgba(255,255,255,0.38);
  --font-head:'Barlow Condensed','Rajdhani','Noto Sans SC',sans-serif;
  --font-body:'Inter','Noto Sans SC','PingFang SC',sans-serif;
  --font-mono:'JetBrains Mono','Roboto Mono','SFMono-Regular',monospace;
  --radius-cut:0;
  --shadow-panel:0 12px 30px rgba(0,0,0,0.3);
  --header-h:68px;
  --content-max:1280px;
  --grid-max:1280px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-root);
  color:var(--sand);
  font-family:var(--font-body);
  font-size:14px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol,menu{padding:0;margin:0;list-style:none}
p,h1,h2,h3,h4,h5,h6{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:0;
}
::selection{background:var(--accent);color:#071F16}
#main-content{scroll-margin-top:80px}

/* Skip link */
.skip-link{
  position:fixed;
  top:12px;
  left:12px;
  z-index:9999;
  background:var(--paper);
  color:#071F16;
  padding:10px 18px;
  font-weight:600;
  transform:translateY(-200%);
  transition:transform .15s;
}
.skip-link:focus{transform:translateY(0)}

/* Container */
.header-inner,
.footer-inner{
  width:min(calc(100% - 48px), var(--grid-max));
  margin-inline:auto;
}
@media (max-width:640px){
  .header-inner,
  .footer-inner{
    width:min(calc(100% - 32px), var(--grid-max));
  }
}

/* Header */
.site-header{
  position:fixed;
  inset:0 0 auto;
  z-index:1000;
  background:transparent;
  color:var(--sand);
  transition:background .25s,box-shadow .25s,backdrop-filter .25s;
}
.site-header.is-solid{
  background:rgba(7,31,22,0.86);
  backdrop-filter:blur(10px);
  --webkit-backdrop-filter:blur(10px);
  box-shadow:0 1px 0 var(--line);
}
.header-inner{
  height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  border-bottom:1px solid transparent;
  transition:border-color .25s;
}
.site-header.is-solid .header-inner{border-color:var(--line)}
.brand{display:flex;align-items:center;gap:10px;color:inherit;flex-shrink:0}
.brand-name{
  font-family:var(--font-head);
  font-size:24px;
  font-weight:800;
  letter-spacing:.04em;
  text-transform:uppercase;
  color:var(--paper);
  line-height:1;
}
.version-chip{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  color:var(--gold);
  border:1px solid rgba(255,215,0,0.5);
  border-right:0;
  padding:2px 8px;
  clip-path:polygon(6px 0,100% 0,calc(100% - 6px) 100%,0 100%);
  background:rgba(255,215,0,0.08);
  white-space:nowrap;
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:18px;
}
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  color:var(--sand);
  padding:6px 0;
  font-size:13px;
}
.nav-toggle-bar{
  display:block;
  width:20px;
  height:2px;
  background:var(--sand);
  transition:transform .2s,opacity .2s;
  margin:3px 0;
}
.nav-toggle-text{font-family:var(--font-mono);font-size:12px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.main-nav{display:block}
.nav-list{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav-list a{
  display:block;
  padding:8px 12px;
  font-family:var(--font-head);
  font-size:16px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--sand);
  position:relative;
  transition:color .15s;
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:12px;
  right:100%;
  bottom:4px;
  height:2px;
  background:var(--accent);
  transition:right .2s;
}
.nav-list a:hover::after{right:12px}
.nav-list a[aria-current="page"]{color:var(--gold)}
.nav-list a[aria-current="page"]::after{right:12px;background:var(--gold)}
.nav-contact{
  display:none;
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--gray);
  border-top:1px solid var(--line);
  padding-top:14px;
  margin-top:14px;
}
@media (max-width:860px){
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:fixed;
    top:var(--header-h);
    right:16px;
    width:min(320px, calc(100vw - 32px));
    background:var(--bg-main);
    border-left:2px solid var(--accent);
    box-shadow:0 30px 50px rgba(0,0,0,0.4);
    transform:translateX(120%);
    transition:transform .25s ease;
    visibility:hidden;
  }
  .main-nav[data-open="true"]{
    transform:translateX(0);
    visibility:visible;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:16px 16px 10px;
  }
  .nav-list a{
    font-size:17px;
    padding:13px 8px;
    border-bottom:1px solid var(--line);
  }
  .nav-list a::after{display:none}
  .nav-contact{display:block}
}
@media (prefers-reduced-motion:reduce){
  .site-header,.main-nav,.nav-toggle-bar,.nav-list a::after{transition:none}
  html{scroll-behavior:auto}
}

/* Footer */
.site-footer{
  background:var(--bg-root);
  color:var(--sand);
  border-top:2px solid var(--bg-live);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-inner{}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.3fr) minmax(0,0.8fr) minmax(0,1fr);
  gap:48px 56px;
  padding-bottom:40px;
}
.footer-logo{
  font-family:var(--font-head);
  font-size:34px;
  font-weight:800;
  letter-spacing:.04em;
  color:var(--paper);
  line-height:1.1;
}
.footer-badge{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--gold);
  margin-top:4px;
  letter-spacing:.02em;
}
.footer-trust{
  margin-top:16px;
  max-width:42em;
  color:var(--gray);
  font-size:13px;
  line-height:1.7;
  border-left:2px solid var(--accent);
  padding-left:14px;
}
.footer-col-title{
  font-family:var(--font-head);
  font-size:16px;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--paper);
  border-bottom:1px solid var(--line);
  padding-bottom:8px;
  margin-bottom:14px;
}
.footer-quick-list li a{
  display:inline-block;
  padding:4px 0;
  font-size:14px;
  color:var(--sand);
  transition:color .15s;
  position:relative;
}
.footer-quick-list li a:hover{color:var(--accent)}
.footer-contact p{
  font-size:13px;
  color:var(--gray);
  margin-bottom:6px;
  line-height:1.55;
}
.footer-meta{
  border-top:1px solid var(--line);
  padding-top:22px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--gray);
}
.footer-meta span{letter-spacing:.02em}
@media (max-width:900px){
  .footer-grid{
    grid-template-columns:1fr;
    gap:38px;
  }
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-family:var(--font-head);
  font-size:16px;
  font-weight:700;
  letter-spacing:.06em;
  padding:10px 22px;
  background:transparent;
  border:1px solid var(--line-strong);
  color:var(--sand);
  clip-path:polygon(10px 0,100% 0,calc(100% - 10px) 100%,0 100%);
  transition:background .2s,color .2s,border-color .2s;
  text-transform:uppercase;
}
.btn-primary{
  background:var(--accent);
  border-color:var(--accent);
  color:#071F16;
}
.btn-primary:hover{background:var(--gold);border-color:var(--gold)}
.btn-ghost:hover{background:rgba(255,255,255,0.08)}

/* Breadcrumb */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--gray);
  margin-bottom:26px;
}
.breadcrumb a{color:var(--sand);transition:color .15s}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span.cur{color:var(--gold)}

/* Section frame */
.section-frame{
  width:100%;
  border:1px solid var(--line);
  background:
    linear-gradient(135deg, transparent 14px, var(--bg-main) 0);
  padding:22px;
  position:relative;
}
.section-frame::before{
  content:"";
  position:absolute;
  inset:10px;
  border:1px dashed var(--line);
  pointer-events:none;
  background:none;
}
@media (max-width:640px){
  .section-frame{padding:16px}
}

/* Surface card */
.surface-card{
  background:rgba(255,255,255,0.05);
  border:1px solid var(--line);
  border-left:3px solid var(--accent);
  padding:18px 18px 16px;
  transition:background .2s,border-color .2s,transform .2s;
  clip-path:polygon(16px 0,100% 0,100% calc(100% - 16px),calc(100% - 16px) 100%,0 100%,0 16px);
}
.surface-card:hover{
  background:rgba(255,255,255,0.08);
  border-color:var(--line-strong);
  transform:translateY(-2px);
}
.surface-card.is-detailed{
  border-left:3px solid var(--gold);
}

/* Entry tag */
.entry-tag{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--gray);
  letter-spacing:.1em;
  text-transform:uppercase;
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:10px;
}
.entry-tag::after{
  content:"";
  width:24px;
  height:1px;
  background:var(--gray);
  display:inline-block;
}

/* Doc index */
.doc-index{
  width:220px;
  background:rgba(11,61,46,0.82);
  border:1px solid var(--line);
  border-right-color:var(--accent);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  padding:18px 14px 18px 18px;
  position:fixed;
  right:14px;
  top:50%;
  transform:translateY(-50%);
  z-index:900;
  font-size:13px;
  display:none;
}
.doc-index.is-visible{display:block}
.doc-index a{
  display:block;
  padding:5px 8px;
  color:var(--gray);
  border-left:2px solid transparent;
  font-size:13px;
}
.doc-index a.is-active{
  color:var(--gold);
  border-left-color:var(--accent);
}
@media (min-width:1180px){.doc-index{width:190px}}
@media (max-width:760px){.doc-index{display:none}}

/* Data strip */
.data-strip{
  background:var(--bg-main);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:12px 0;
  overflow:hidden;
}
.data-strip-inner{
  display:flex;
  gap:28px;
  white-space:nowrap;
  width:max-content;
}
.data-strip span{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--gray);
}
.data-strip span b{color:var(--gold);font-weight:600}

/* Toggle panel */
.toggle-panel{
  border:1px solid var(--line);
  background:rgba(255,255,255,0.03);
  margin-bottom:12px;
}
.tf-head{
  width:100%;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:10px;
  padding:14px 16px;
  color:var(--sand);
  font-size:15px;
  text-align:left;
}
.tf-head .tf-arrow{
  font-family:var(--font-mono);
  color:var(--accent);
  transition:transform .2s;
}
.toggle-panel[data-open="true"] .tf-arrow{transform:rotate(90deg)}
.tf-panel{display:none;padding:0 16px 16px;color:var(--gray);font-size:14px;line-height:1.7}
.toggle-panel[data-open="true"] .tf-panel{display:block}
.tf-panel code{font-family:var(--font-mono);font-size:12px;color:var(--gold);background:rgba(255,215,0,0.08);padding:2px 4px}

/* Image plate */
.img-plate{
  background:linear-gradient(160deg,#0b2d22, #123f2e);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--gray);
  font-family:var(--font-mono);
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.08em;
  width:100%;
  height:220px;
  position:relative;
}
.img-plate::before{
  content:"";
  position:absolute;
  inset:12px;
  border:1px dashed var(--line);
  pointer-events:none;
}
.img-plate.is-wide{height:280px}
.img-plate.is-portrait{height:100%;min-height:320px}
@media (min-width:1100px){
  .img-plate{height:260px}
  .img-plate.is-wide{height:340px}
}

/* Scroll progress */
.scroll-progress{
  position:fixed;
  top:-2px;
  left:0;
  height:3px;
  width:100%;
  background:transparent;
  z-index:2000;
}
.scroll-progress span{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--accent),var(--gold));
  transition:width .08s linear;
}

/* Back top */
.back-top{
  display:none;
  position:fixed;
  right:20px;
  bottom:24px;
  z-index:888;
  width:38px;
  height:38px;
  align-items:center;
  justify-content:center;
  background:rgba(11,61,46,0.95);
  border:1px solid var(--accent);
  color:var(--sand);
  font-size:18px;
  line-height:1;
  transition:background .2s,transform .2s;
}
.back-top::before{content:"↑";font-weight:700}
.back-top:hover{background:var(--accent);color:#071F16}
.back-top.is-visible{display:flex}
@media (prefers-reduced-motion:reduce){.back-top{transition:none}}

/* Page heading helpers */
.page-hero{
  padding-top:calc(var(--header-h) + 50px);
  padding-bottom:42px;
}
.page-title{
  font-family:var(--font-head);
  font-size:clamp(40px, 8vw, 80px);
  line-height:.96;
  font-weight:800;
  letter-spacing:.02em;
  text-transform:uppercase;
  color:var(--paper);
  position:relative;
  margin:0;
}
.page-title em{
  font-style:normal;
  color:var(--accent);
}
.page-hero .lede{
  max-width:480px;
  margin-top:20px;
  font-size:15px;
  color:var(--gray);
  border-left:3px solid var(--accent);
  padding-left:14px;
}
@media (min-width:760px){
  .page-hero{display:grid;grid-template-columns:1.3fr 0.7fr;gap:30px}
  .page-title{grid-column:1}
  .page-hero .lede{grid-column:2;align-self:end;padding-bottom:6px;margin-left:.5rem}
}

/* Main content */
.main-content{
  padding-top:var(--header-h);
  min-height:60vh;
  outline:none;
}
.site-header + .main-content{
  padding-top:var(--header-h);
}

/* Responsive type & utilities */
@media (min-width:768px){
  body{font-size:15px}
}
.text-gray{color:var(--gray)}
.text-gold{color:var(--gold)}
.text-accent{color:var(--accent)}
.font-head{font-family:var(--font-head)}
.font-mono{font-family:var(--font-mono)}
.mono-badge{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--gold);
  background:rgba(255,215,0,0.08);
  padding:2px 8px;
  border:1px solid rgba(255,215,0,0.2);
}
.is-hidden-mobile{display:inline}
@media (max-width:640px){
  .is-hidden-mobile{display:none}
}
img{
  filter:saturate(0.85) contrast(1.05);
}