:root{
  --ink-900:#061A14;
  --ink-800:#0B2A20;
  --ink-700:#123D2E;
  --stroke:#1F4A39;
  --lime:#B8FF3D;
  --orange:#FF8A3D;
  --ice:#7FD8FF;
  --paper:#F1F6E8;
  --muted:#8FA99B;
  --red:#FF5C5C;
  --yellow:#FFD166;
  --font-display:"Arial Narrow","Helvetica Neue",Helvetica,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --gutter:clamp(16px,4vw,44px);
  --cut:16px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:104px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(62% 42% at 86% 0%,rgba(184,255,61,.09),transparent 62%),
    radial-gradient(52% 38% at 4% 5%,rgba(127,216,255,.06),transparent 68%);
  background-repeat:no-repeat;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:clamp(16px,1.05vw,17px);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
[hidden]{display:none !important}
img,picture,svg{max-width:100%}
img{height:auto}
h1,h2,h3,h4,h5{
  margin:0 0 .5em;
  font-family:var(--font-display);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.08;
  color:var(--paper);
}
h1{font-size:clamp(36px,7vw,76px)}
h2{font-size:clamp(26px,3.6vw,44px)}
h3{font-size:clamp(19px,2.2vw,26px);line-height:1.25}
h4{font-size:clamp(16px,1.6vw,19px);line-height:1.35}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 1em;padding-left:1.2em}
a{color:var(--ice);text-decoration:none;transition:color .16s var(--ease)}
a:hover{color:var(--lime)}
strong{font-weight:700;color:var(--paper)}
small{font-size:12.5px;color:var(--muted)}
::selection{background:var(--lime);color:var(--ink-900)}
#main-content{scroll-margin-top:calc(var(--header-h) + 16px)}
#main-content:focus{outline:none}

:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
.btn:focus-visible,.nav-link:focus-visible,.nav-toggle:focus-visible,.filter-btn:focus-visible,.brand:focus-visible,.footer-logo:focus-visible{
  outline:2px solid var(--ice);
  outline-offset:-4px;
}

.container{width:100%;max-width:1340px;margin-inline:auto;padding-inline:var(--gutter)}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{
  position:absolute;
  top:-70px;left:50%;
  z-index:200;
  transform:translateX(-50%);
  padding:12px 20px;
  background:var(--lime);
  color:var(--ink-900);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));
  transition:top .18s var(--ease);
}
.skip-link:focus{top:10px;color:var(--ink-900)}

/* ===== header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--ink-800);
  border-bottom:1px solid var(--stroke);
}
.header-rail{
  background:var(--ink-900);
  border-bottom:1px solid var(--stroke);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.09em;
  text-transform:uppercase;
}
.rail-inner{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:6px 18px;
  min-height:30px;
  padding-block:4px;
}
.rail-batch{display:inline-flex;align-items:center;gap:8px;color:var(--paper);line-height:1}
.rail-dot{
  width:7px;height:7px;flex:none;
  background:var(--lime);
  border-radius:50%;
  box-shadow:0 0 0 3px rgba(184,255,61,.16);
}
.rail-label{color:var(--muted)}
.rail-num{color:var(--orange);font-weight:700;letter-spacing:.04em}
.rail-current{color:var(--ice);line-height:1}
.rail-note{margin-left:auto;color:var(--muted);line-height:1}

.command-bar{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,26px);
  min-height:72px;
  padding-block:10px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:none;
  color:var(--paper);
}
.brand:hover{color:var(--paper)}
.brand-mark{
  position:relative;
  width:36px;height:36px;flex:none;
  background:var(--lime);
  clip-path:polygon(0 0,100% 0,100% 64%,64% 100%,0 100%);
}
.brand-mark::after{
  content:"";
  position:absolute;
  left:8px;right:8px;top:50%;
  height:2px;
  background:var(--ink-900);
  transform:rotate(-42deg);
}
.brand-mark::before{
  content:"";
  position:absolute;
  left:50%;top:9px;bottom:9px;
  width:2px;
  background:var(--ink-900);
  opacity:.55;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-name{font-family:var(--font-display);font-weight:800;font-size:17px;letter-spacing:.02em}
.brand-tag{font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--orange);white-space:nowrap}

.primary-nav{flex:1 1 auto;min-width:0}
.nav-list{
  display:flex;
  align-items:center;
  justify-content:flex-start;
  flex-wrap:nowrap;
  gap:2px;
  margin:0;padding:0;
  list-style:none;
}
.nav-item{flex:none}
.nav-link{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:9px 11px;
  color:var(--muted);
  font-size:14px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  clip-path:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,9px 100%,0 calc(100% - 9px));
  transition:color .16s var(--ease),background-color .16s var(--ease);
}
.nav-idx{font-family:var(--font-mono);font-size:10px;font-weight:400;letter-spacing:.06em;color:var(--orange);opacity:.85}
.nav-label{display:inline-block}
.nav-link:hover{color:var(--paper);background:var(--ink-700)}
.nav-link:hover .nav-idx{color:var(--lime);opacity:1}
.nav-link[aria-current="page"]{color:var(--ink-900);background:var(--lime);font-weight:700}
.nav-link[aria-current="page"] .nav-idx{color:var(--ink-900);opacity:.55}
.nav-foot{
  display:none;
  margin:16px var(--gutter) 0;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--muted);
}

.bar-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:none}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 18px;
  border:1px solid transparent;
  background:none;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1;
  text-align:center;
  cursor:pointer;
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),filter .16s var(--ease);
}
.btn:hover{color:var(--paper)}
.btn-primary{
  background:var(--lime);
  color:var(--ink-900);
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));
}
.btn-primary:hover{color:var(--ink-900);filter:brightness(1.08)}
.btn-ghost{
  background:var(--ink-700);
  border-color:var(--stroke);
  color:var(--paper);
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));
}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime)}
.btn-cta{white-space:nowrap}

.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  flex:none;
  padding:0;
  background:var(--ink-700);
  border:1px solid var(--stroke);
  color:var(--paper);
  cursor:pointer;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.nav-toggle:hover{border-color:var(--ice);color:var(--ice)}
.nav-toggle-bar{
  position:relative;
  display:block;
  width:18px;height:2px;
  background:currentColor;
  transition:background-color .16s var(--ease);
}
.nav-toggle-bar::before,
.nav-toggle-bar::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;height:2px;
  background:currentColor;
  transition:transform .18s var(--ease),top .18s var(--ease);
}
.nav-toggle-bar::before{top:-6px}
.nav-toggle-bar::after{top:6px}
.nav-toggle[aria-expanded="true"]{border-color:var(--lime);color:var(--lime)}
.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;bottom:-1px;
  width:100%;height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--lime),var(--orange) 58%,var(--ice));
  pointer-events:none;
}

/* ===== footer ===== */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  background:var(--ink-800);
  border-top:1px solid var(--stroke);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:5px;
  background:repeating-linear-gradient(115deg,var(--lime) 0 14px,transparent 14px 30px);
  opacity:.5;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1.25fr) minmax(0,.6fr) minmax(0,.6fr) minmax(0,1.15fr);
  gap:clamp(24px,3vw,48px);
  padding-block:clamp(36px,5vw,64px) clamp(28px,4vw,48px);
}
.footer-brand{min-width:0}
.footer-logo{
  display:inline-block;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(24px,3vw,34px);
  letter-spacing:.01em;
  line-height:1.1;
  color:var(--paper);
}
.footer-logo:hover{color:var(--lime)}
.footer-batch{
  margin:10px 0 14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--muted);
}
.footer-batch-num{color:var(--orange);font-size:16px;font-weight:700;letter-spacing:.04em}
.footer-note{max-width:34ch;font-size:13px;line-height:1.7;color:var(--muted);margin:0}
.footer-heading{
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ice);
}
.footer-list{display:flex;flex-direction:column;gap:7px;margin:0;padding:0;list-style:none}
.footer-link{
  display:inline-block;
  padding:2px 0;
  font-size:14px;
  color:var(--muted);
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-link:hover{color:var(--lime);border-bottom-color:var(--lime)}
.footer-contact{min-width:0}
.contact-list{display:grid;gap:11px;margin:0;padding:0;list-style:none}
.contact-key{
  display:block;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--orange);
}
.contact-value{display:block;font-size:14px;line-height:1.55;color:var(--paper);overflow-wrap:anywhere}
.contact-value--num{font-family:var(--font-mono);letter-spacing:.05em}
.contact-note{margin:14px 0 0;font-size:12px;line-height:1.6;color:var(--muted)}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 24px;
  padding-block:15px 22px;
  border-top:1px solid var(--stroke);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.07em;
  color:var(--muted);
}
.footer-copy,.footer-icp{color:var(--muted)}
.footer-slug{color:var(--muted);opacity:.7;margin-left:auto}

/* ===== shared page components ===== */
.section{padding-block:clamp(36px,5.5vw,72px)}
.section-head{display:grid;gap:10px;max-width:62ch;margin-bottom:clamp(18px,3vw,34px)}
.section-head > *{margin:0}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.15em;
  text-transform:uppercase;
  color:var(--lime);
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--lime)}

.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-split{grid-template-columns:minmax(0,7fr) minmax(0,4fr);gap:clamp(20px,3vw,48px)}

.breadcrumbs{padding-block:16px 0}
.breadcrumbs-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0 10px;
  margin:0;padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--muted);
}
.breadcrumbs-item{display:inline-flex;align-items:center;gap:10px}
.breadcrumbs-item + .breadcrumbs-item::before{content:"/";color:var(--stroke)}
.breadcrumbs-link{color:var(--muted)}
.breadcrumbs-link:hover{color:var(--ice)}
.breadcrumbs-current{color:var(--paper)}

.cut-panel{
  position:relative;
  background:var(--ink-700);
  border:1px solid var(--stroke);
  padding:clamp(16px,2.4vw,26px);
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
}
.cut-panel::before{
  content:"";
  position:absolute;
  top:0;right:0;
  width:30px;height:2px;
  background:var(--lime);
  transform:rotate(45deg);
  transform-origin:right top;
  opacity:.65;
}
.cut-panel > :last-child{margin-bottom:0}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 9px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.1em;
  text-transform:uppercase;
  line-height:1.4;
  color:var(--ink-900);
  background:var(--lime);
  clip-path:polygon(0 0,calc(100% - 6px) 0,100% 6px,100% 100%,6px 100%,0 calc(100% - 6px));
}
.tag--warm{background:var(--orange)}
.tag--ice{background:var(--ice)}
.tag--red{background:var(--red)}
.tag--yellow{background:var(--yellow)}
.tag--ghost{
  background:transparent;
  color:var(--muted);
  border:1px solid var(--stroke);
  clip-path:none;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

.stat{display:flex;flex-direction:column;gap:3px;min-width:0}
.stat-value{
  font-family:var(--font-mono);
  font-size:clamp(22px,3vw,32px);
  font-weight:700;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--orange);
}
.stat-label{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--muted);
}

.timeline{
  position:relative;
  display:grid;
  gap:16px;
  margin:0;
  padding:0 0 0 24px;
  list-style:none;
}
.timeline::before{
  content:"";
  position:absolute;
  left:5px;top:8px;bottom:8px;
  width:1px;
  background:linear-gradient(180deg,var(--lime),var(--stroke) 45%,transparent);
}
.timeline-item{position:relative}
.timeline-node{
  position:absolute;
  left:-24px;top:7px;
  width:11px;height:11px;
  background:var(--ink-900);
  border:2px solid var(--lime);
  border-radius:50%;
  transition:background-color .18s var(--ease),box-shadow .18s var(--ease);
}
.timeline-item[data-active] .timeline-node{
  background:var(--lime);
  box-shadow:0 0 0 4px rgba(184,255,61,.16);
}
.timeline-round{
  display:block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.11em;
  text-transform:uppercase;
  color:var(--orange);
}

.filter-bar{display:flex;flex-wrap:wrap;gap:8px;padding-block:2px}
.filter-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:40px;
  padding:8px 14px;
  background:var(--ink-800);
  border:1px solid var(--stroke);
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  text-transform:uppercase;
  line-height:1;
  cursor:pointer;
  clip-path:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,9px 100%,0 calc(100% - 9px));
  transition:color .16s var(--ease),border-color .16s var(--ease),background-color .16s var(--ease);
}
.filter-btn:hover{color:var(--paper);border-color:var(--ice)}
.filter-btn[aria-pressed="true"]{
  background:var(--lime);
  border-color:var(--lime);
  color:var(--ink-900);
  font-weight:700;
}

.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/10;
  background:var(--ink-700);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 28px),calc(100% - 28px) 100%,0 100%);
}
.media-frame > img,
.media-frame > picture > img{
  display:block;
  width:100%;height:100%;
  object-fit:cover;
  filter:saturate(1.08) contrast(1.04) brightness(.96);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:46%;
  background:linear-gradient(180deg,transparent,rgba(6,26,20,.88));
  pointer-events:none;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--plain::after{display:none}
.media-badge{
  position:absolute;
  left:12px;bottom:12px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 10px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-900);
  background:var(--orange);
  clip-path:polygon(0 0,calc(100% - 6px) 0,100% 6px,100% 100%,6px 100%,0 calc(100% - 6px));
}

.slash-rule{
  height:1px;
  border:0;
  margin:clamp(28px,4vw,52px) 0;
  background:repeating-linear-gradient(90deg,var(--stroke) 0 16px,transparent 16px 34px);
}

.is-entering{animation:card-in .2s var(--ease) both}
@keyframes card-in{from{opacity:0;transform:translate(10px,-8px)}to{opacity:1;transform:none}}
@keyframes nav-in{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

/* ===== responsive ===== */
@media (max-width:1180px){
  .nav-idx{display:none}
  .nav-link{padding:9px 9px;font-size:13.5px}
}
@media (max-width:900px){
  :root{--header-h:100px}
  .command-bar{min-height:62px;gap:10px}
  .primary-nav{
    position:absolute;
    left:0;right:0;top:100%;
    display:none;
    padding:4px 0 20px;
    background:var(--ink-800);
    border-top:1px solid var(--stroke);
    border-bottom:1px solid var(--stroke);
    max-height:calc(100dvh - 100px);
    overflow-y:auto;
    z-index:5;
  }
  .primary-nav[data-open]{display:block;animation:nav-in .2s var(--ease) both}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{border-bottom:1px solid var(--stroke)}
  .nav-item:first-child{border-top:1px solid var(--stroke)}
  .nav-link{
    display:flex;
    justify-content:flex-start;
    gap:14px;
    min-height:54px;
    padding:16px var(--gutter);
    font-size:15px;
    clip-path:none;
    background:none;
  }
  .nav-idx{display:inline;font-size:11px;color:var(--orange);opacity:.9}
  .nav-link:hover{background:var(--ink-700)}
  .nav-link[aria-current="page"]{
    background:var(--ink-700);
    color:var(--lime);
    box-shadow:inset 3px 0 0 var(--lime);
  }
  .nav-link[aria-current="page"] .nav-idx{color:var(--lime);opacity:.85}
  .nav-foot{display:block}
  .nav-toggle{display:inline-flex}
  .grid-split,.grid-2,.grid-3{grid-template-columns:minmax(0,1fr)}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
  .footer-slug{margin-left:0}
}
@media (max-width:700px){
  .rail-note{display:none}
  .brand-tag{display:none}
  .btn-cta{padding:0 13px;font-size:12px;min-height:42px}
  .footer-top{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-brand{grid-column:auto}
}
@media (max-width:430px){
  .rail-current{font-size:10px;letter-spacing:.06em}
  .brand-mark{width:32px;height:32px}
  .brand-name{font-size:15px}
  .btn-cta{padding:0 10px;font-size:11.5px;letter-spacing:0}
  .footer-base{font-size:10.5px;gap:4px 14px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .is-entering{animation:none}
  .scroll-progress{transition:none}
}