:root{
  --ink:#0B1220;
  --ink-2:#12203A;
  --orange:#FF5A1F;
  --orange-mist:#FFD8C6;
  --lime:#C6FF3D;
  --paper:#F6F1E6;
  --paper-2:#E3DACB;
  --text:#1E2634;
  --mute:#9AA8BE;
  --alert:#E5484D;

  --font-display:"Source Han Sans Heavy","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --wrap:1280px;
  --pad:clamp(16px,3vw,40px);
  --gap:clamp(16px,2vw,28px);
  --edge:2px;
  --shadow-ink:6px 6px 0 var(--ink);
  --shadow-orange:6px 6px 0 var(--orange-mist);
  --shadow-lime:6px 6px 0 var(--lime);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-body);
  font-size:clamp(16px,0.5vw + 14px,17px);
  font-weight:500;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.08;letter-spacing:-.005em}
ul,ol{list-style:none;margin:0;padding:0}
img,picture,svg,video{display:block;max-width:100%}
img{height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
table{border-collapse:collapse;width:100%}
strong,b{font-weight:800}
::selection{background:var(--orange);color:var(--ink)}

:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
.surface-dark :focus-visible,.site-footer :focus-visible,.site-header :focus-visible{outline-color:var(--lime)}

/* ---------- utilities ---------- */
.container{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-9{grid-column:span 9}
.col-12{grid-column:span 12}

.surface-dark{background:var(--ink);color:var(--paper)}
.surface-dark h1,.surface-dark h2,.surface-dark h3{color:var(--paper)}
.surface-paper{background:var(--paper);color:var(--text)}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.lede{font-size:clamp(17px,0.9vw + 14px,20px);line-height:1.72;color:var(--text);max-width:38em}
.surface-dark .lede{color:var(--paper-2)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--orange);
}
.eyebrow::before{content:"";width:22px;height:2px;background:currentColor;flex:none}
.surface-dark .eyebrow,.site-footer .eyebrow{color:var(--lime)}

.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:12px 24px;padding-bottom:14px;border-bottom:2px solid currentColor;
  margin-bottom:clamp(24px,3vw,40px);
}
.rule-line{height:1px;border:0;background:currentColor;opacity:.2;margin:0}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 22px;
  font-family:var(--font-display);font-weight:800;font-size:15px;line-height:1.2;
  letter-spacing:.02em;
  color:var(--ink);
  background:var(--paper);
  border:var(--edge) solid var(--ink);
  box-shadow:var(--shadow-ink);
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease;
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:8px 8px 0 var(--ink)}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}
.btn--primary{background:var(--orange);border-color:var(--ink);color:var(--ink)}
.btn--primary:hover{box-shadow:8px 8px 0 var(--ink)}
.btn--dark{background:var(--ink);color:var(--paper);border-color:var(--ink);box-shadow:var(--shadow-orange)}
.btn--dark:hover{box-shadow:8px 8px 0 var(--orange-mist)}
.btn--ghost{background:transparent;color:currentColor;border-color:currentColor;box-shadow:none}
.btn--ghost:hover{transform:none;box-shadow:none;background:rgba(255,90,31,.12)}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:400;
  transform:translateY(-180%);
  padding:12px 18px;
  background:var(--lime);color:var(--ink);
  border:var(--edge) solid var(--ink);
  font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.08em;
  transition:transform .2s ease;
}
.skip-link:focus{transform:translateY(0)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--ink);
  color:var(--paper);
  border-bottom:var(--edge) solid var(--orange);
}
.scroll-progress{
  position:absolute;left:0;bottom:-2px;
  width:100%;height:2px;
  background:var(--lime);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .1s linear;
  z-index:3;
}
.header-rail{
  max-width:var(--wrap);margin-inline:auto;
  padding:14px var(--pad);
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;
  transition:padding .2s ease;
}
.site-header[data-scrolled="true"] .header-rail{padding-top:8px;padding-bottom:8px}

.brand{display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap;min-width:0}
.brand__mark{
  font-family:var(--font-mono);font-weight:700;font-size:19px;line-height:1;
  letter-spacing:.14em;
  color:var(--lime);
  background:var(--ink-2);
  padding:7px 9px 6px;
  border-left:4px solid var(--orange);
}
.brand__name{
  font-family:var(--font-display);font-weight:900;font-size:20px;
  line-height:1;letter-spacing:.06em;color:var(--paper);
}
.brand__status{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 8px;
  border:1px solid rgba(154,168,190,.35);
  font-family:var(--font-mono);font-size:10px;line-height:1.4;
  letter-spacing:.14em;text-transform:uppercase;color:var(--mute);
}
.status-text{white-space:nowrap}
.status-dot{
  width:7px;height:7px;flex:none;background:var(--lime);
  animation:dot-pulse 2.6s ease-in-out infinite;
}
@keyframes dot-pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(198,255,61,.5)}
  50%{opacity:.55;box-shadow:0 0 0 5px rgba(198,255,61,0)}
}

/* nav */
.site-nav__list{display:flex;align-items:center;gap:2px;flex-wrap:wrap;justify-content:flex-end}
.site-nav__link{
  display:inline-flex;align-items:baseline;gap:7px;
  padding:8px 12px;
  font-family:var(--font-mono);font-size:13px;font-weight:600;
  letter-spacing:.1em;color:var(--mute);
  border-bottom:2px solid transparent;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.site-nav__num{font-size:10px;letter-spacing:.08em;color:rgba(154,168,190,.65)}
.site-nav__link:hover{color:var(--paper);border-bottom-color:var(--orange)}
.site-nav__link[aria-current="page"]{color:var(--lime);border-bottom-color:var(--lime)}
.site-nav__link[aria-current="page"] .site-nav__num{color:var(--lime)}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 12px;
  border:var(--edge) solid rgba(154,168,190,.5);
  color:var(--paper);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--orange);color:var(--lime)}
.nav-toggle__bars{display:inline-grid;gap:4px;width:16px}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;transition:transform .2s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:last-child{transform:translateY(-3px) rotate(-45deg)}

/* filter strip */
.filter-strip{background:var(--ink-2);border-top:1px solid rgba(154,168,190,.18)}
.filter-strip__bar{
  max-width:var(--wrap);margin-inline:auto;
  padding:0 var(--pad);height:38px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.filter-strip__toggle{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.14em;color:var(--paper);
}
.filter-strip__toggle:hover{color:var(--lime)}
.filter-strip__chev{
  width:0;height:0;flex:none;
  border-left:4px solid transparent;border-right:4px solid transparent;
  border-top:5px solid var(--orange);
  transition:transform .2s ease;
}
.filter-strip[data-open="false"] .filter-strip__chev{transform:rotate(-90deg)}
.filter-strip__note{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--mute);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.filter-strip__body{
  max-width:var(--wrap);margin-inline:auto;
  padding:0 var(--pad) 16px;
  display:grid;grid-template-columns:1fr 1fr 1fr auto;
  gap:14px;align-items:end;
}
@media (min-width:901px){
  .filter-strip[data-open="false"] .filter-strip__body{display:none}
}
.filter-field{display:grid;gap:5px;min-width:0}
.filter-field__label{
  font-family:var(--font-mono);font-size:10px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--mute);
}
.filter-field__select{
  -webkit-appearance:none;appearance:none;
  width:100%;
  padding:9px 30px 9px 12px;
  background-color:var(--ink);
  color:var(--paper);
  border:1px solid rgba(154,168,190,.35);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;
  background-image:
    linear-gradient(45deg,transparent 50%,var(--orange) 50%),
    linear-gradient(135deg,var(--orange) 50%,transparent 50%);
  background-position:calc(100% - 16px) 55%,calc(100% - 11px) 55%;
  background-size:5px 5px,5px 5px;
  background-repeat:no-repeat;
  transition:border-color .18s ease;
}
.filter-field__select:hover,.filter-field__select:focus{border-color:var(--orange)}
.filter-strip__cta{white-space:nowrap;padding:11px 18px;font-size:14px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--paper)}
.footer-stripe{
  height:10px;
  background-color:var(--ink-2);
  background-image:repeating-linear-gradient(90deg,var(--orange) 0 3px,transparent 3px 26px);
}
.footer-top{
  max-width:var(--wrap);margin-inline:auto;
  padding:clamp(40px,6vw,72px) var(--pad) clamp(32px,4vw,56px);
  display:grid;
  grid-template-columns:1.5fr repeat(4,minmax(0,1fr));
  gap:clamp(24px,3vw,40px);
  border-bottom:1px solid rgba(154,168,190,.22);
}
.footer-brand{display:grid;gap:14px;align-content:start;min-width:0}
.footer-brand__mark{
  display:inline-flex;align-items:baseline;gap:8px;
  font-family:var(--font-mono);font-weight:700;font-size:26px;line-height:1;
  letter-spacing:.14em;color:var(--lime);
  width:fit-content;
}
.footer-brand__sub{
  font-family:var(--font-display);font-size:16px;font-weight:900;
  letter-spacing:.1em;color:var(--paper);
}
.footer-brand__note{font-size:14px;line-height:1.7;color:var(--mute);max-width:30em}
.footer-brand__stamp{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--lime);
}
.footer-col{min-width:0}
.footer-col__title{
  font-family:var(--font-mono);font-size:11px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;
  color:var(--paper);margin:0 0 14px;
  padding-bottom:8px;border-bottom:1px solid rgba(154,168,190,.28);
}
.footer-list{display:grid;gap:9px}
.footer-list__link{
  font-size:14px;color:var(--mute);
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
  width:fit-content;
}
.footer-list__link:hover{color:var(--lime);border-bottom-color:var(--lime)}
.footer-list__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--mute)}
.footer-contact{display:grid;gap:8px}
.footer-contact__value{
  font-family:var(--font-mono);font-size:13px;line-height:1.55;
  letter-spacing:.02em;color:var(--paper-2);word-break:break-word;
}
.footer-contact__note{font-size:12px;line-height:1.6;color:var(--mute);margin-top:2px}
.footer-base{
  max-width:var(--wrap);margin-inline:auto;
  padding:18px var(--pad) 30px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--mute);
}
.footer-base__legal{margin:0}
.footer-base__stamp{margin:0;color:var(--lime)}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding-block:14px}
.breadcrumb__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--mute);
}
.breadcrumb__link{border-bottom:1px solid transparent;transition:color .16s ease,border-color .16s ease}
.breadcrumb__link:hover{color:var(--orange);border-bottom-color:var(--orange)}
.breadcrumb__sep{opacity:.5}
.breadcrumb__current{color:var(--orange)}

/* ---------- image frame ---------- */
.img-frame{
  position:relative;overflow:hidden;
  border:var(--edge) solid var(--ink);
  background:var(--ink-2);
  box-shadow:8px 8px 0 var(--orange-mist);
  aspect-ratio:4 / 3;
}
.img-frame img{width:100%;height:100%;object-fit:cover;filter:contrast(1.08) saturate(1.06)}
.img-frame--wide{aspect-ratio:16 / 9}
.img-frame--tall{aspect-ratio:3 / 4}
.img-frame--lime{box-shadow:8px 8px 0 var(--lime)}
.img-frame--on-dark{border-color:rgba(246,241,230,.35);box-shadow:8px 8px 0 rgba(255,90,31,.45)}
.img-frame__cap{
  position:absolute;left:0;bottom:0;
  padding:6px 10px;
  background:var(--ink);color:var(--lime);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
}

/* ---------- tag ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;line-height:1.4;
  border:1px solid currentColor;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
}
.tag--solid{background:var(--orange);border-color:var(--orange);color:var(--ink)}
.tag--lime{background:var(--lime);border-color:var(--lime);color:var(--ink)}

/* ---------- reveal ---------- */
.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.js [data-reveal].is-in{opacity:1;transform:none}

body.nav-open{overflow:hidden}

/* ---------- tablet ---------- */
@media (max-width:1100px){
  .site-nav__link{padding:8px 9px;font-size:12px;letter-spacing:.06em}
  .site-nav__num{display:none}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
}

/* ---------- mobile ---------- */
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;left:0;right:0;bottom:0;top:auto;
    z-index:200;
    max-height:78vh;overflow:auto;
    padding:14px 14px calc(18px + env(safe-area-inset-bottom));
    background:var(--ink-2);
    border-top:var(--edge) solid var(--orange);
    box-shadow:0 -14px 34px rgba(11,18,32,.45);
    transform:translateY(112%);
    transition:transform .28s ease;
  }
  .site-nav[data-open="true"]{transform:translateY(0)}
  .site-nav__list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;justify-content:stretch}
  .site-nav__link{
    display:flex;align-items:center;gap:10px;
    padding:14px 12px;
    font-size:14px;letter-spacing:.08em;
    color:var(--paper);
    border:1px solid rgba(154,168,190,.24);
    border-bottom-width:1px;
  }
  .site-nav__num{display:inline;font-size:10px;color:var(--orange)}
  .site-nav__link[aria-current="page"]{border-color:var(--lime);background:rgba(198,255,61,.08)}
  .site-nav__link[aria-current="page"] .site-nav__num{color:var(--lime)}

  .filter-strip__note{display:none}
  .filter-strip__body{
    display:none;
    grid-template-columns:1fr;
    gap:12px;
    padding-bottom:18px;
  }
  .filter-strip[data-open="true"] .filter-strip__body{display:grid}
  .filter-strip__cta{width:100%}

  .brand__status{display:none}
  .col-3,.col-4,.col-5,.col-6{grid-column:span 6}
  .col-7,.col-8,.col-9{grid-column:span 12}
}

@media (max-width:640px){
  .header-rail{padding-block:10px;gap:12px}
  .brand__mark{font-size:17px;padding:6px 7px 5px}
  .brand__name{font-size:17px}
  .nav-toggle__label{display:none}
  .footer-top{grid-template-columns:1fr;gap:26px}
  .footer-base{flex-direction:column;align-items:flex-start}
  .col-3,.col-4,.col-5,.col-6{grid-column:span 12}
  .img-frame,.img-frame--wide,.img-frame--tall{box-shadow:5px 5px 0 var(--orange-mist)}
}

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