:root{
  --ink-900:#07090C;
  --ink-800:#10151A;
  --ink-700:#0B1015;
  --line:#2A323B;
  --line-soft:rgba(42,50,59,.6);
  --paper:#F4F1E8;
  --mist:#9AA3AD;
  --lime:#C6FF3D;
  --blue:#2FD4FF;
  --orange:#FF6B2C;
  --deep-green:#12351F;
  --white:#FFFFFF;

  --font-display:"Arial Narrow","Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;
  --font-serif:"Songti SC","Noto Serif CJK SC",SimSun,Georgia,serif;

  --maxw:1440px;
  --maxw-narrow:1180px;
  --gutter:clamp(1rem,3.4vw,2.75rem);
  --ease:cubic-bezier(.22,.7,.2,1);
}

*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:7rem;
}

body{
  margin:0;
  overflow-x:hidden;
  background:var(--ink-900);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:clamp(.94rem,.35vw + .86rem,1.05rem);
  line-height:1.78;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.08;
  letter-spacing:-.012em;
  color:var(--white);
  text-wrap:balance;
}

p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;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}
strong{font-weight:700}

::selection{background:var(--lime);color:var(--ink-900)}

:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:3px;
  border-radius:0;
}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;
  left:50%;
  top:.5rem;
  z-index:300;
  transform:translate(-50%,-160%);
  padding:.7rem 1.3rem;
  background:var(--lime);
  color:var(--ink-900);
  font-family:var(--font-display);
  font-weight:800;
  font-size:.82rem;
  letter-spacing:.14em;
  border:1px solid var(--ink-900);
  transition:transform .2s var(--ease);
}
.skip-link:focus-visible{transform:translate(-50%,0)}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:linear-gradient(180deg,#0A0E13 0%,rgba(7,9,12,.97) 100%);
  border-bottom:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(198,255,61,.22);
  backdrop-filter:blur(8px);
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header[data-stuck]{
  border-bottom-color:rgba(198,255,61,.4);
  box-shadow:0 18px 40px -28px rgba(0,0,0,.95),inset 0 1px 0 rgba(198,255,61,.35);
}

.header-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:1rem;
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:.85rem var(--gutter);
  position:relative;
}

.header-rail{
  display:flex;
  align-items:center;
  gap:.85rem;
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--mist);
  min-width:0;
}
.header-rail--left{justify-content:flex-start;opacity:.9}
.header-rail--right{justify-content:flex-end;gap:.7rem}

.rail-label{
  padding:.28rem .5rem;
  border:1px solid var(--line);
  color:#8E99A4;
  white-space:nowrap;
}
.rail-status{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  color:var(--blue);
  white-space:nowrap;
}
.rail-dot{
  display:inline-block;
  width:.4rem;
  height:.4rem;
  background:var(--blue);
  box-shadow:0 0 0 3px rgba(47,212,255,.15);
  animation:railPulse 2.6s ease-in-out infinite;
}
@keyframes railPulse{0%,100%{opacity:1}50%{opacity:.32}}

.masthead{justify-self:center;display:flex;min-width:0}
.masthead-brand{
  display:inline-flex;
  align-items:center;
  gap:.7rem;
  min-width:0;
  padding:.15rem .2rem;
}
.brand-mark{
  flex:0 0 auto;
  display:grid;
  place-items:center;
  width:2.35rem;
  height:2.35rem;
  font-family:var(--font-serif);
  font-size:1.15rem;
  line-height:1;
  color:var(--lime);
  border:1px solid var(--lime);
  background:linear-gradient(135deg,rgba(198,255,61,.18) 0%,rgba(198,255,61,0) 62%);
  clip-path:polygon(0 0,100% 0,100% 72%,86% 100%,0 100%);
}
.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:clamp(1.02rem,1.5vw,1.5rem);
  letter-spacing:.07em;
  color:var(--paper);
  white-space:nowrap;
}
.brand-tagline{
  font-family:var(--font-serif);
  font-size:.66rem;
  letter-spacing:.26em;
  color:var(--mist);
  white-space:nowrap;
}
.masthead-brand:hover .brand-name{color:var(--lime)}

/* nav toggle */
.nav-toggle{
  display:none;
  align-items:center;
  gap:.55rem;
  padding:.5rem .7rem;
  border:1px solid var(--line);
  background:var(--ink-800);
  color:var(--paper);
  font-family:var(--font-display);
  font-size:.74rem;
  font-weight:700;
  letter-spacing:.18em;
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle-bars{display:inline-flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle-bars > span{
  display:block;
  height:2px;
  width:100%;
  background:currentColor;
  transition:transform .22s var(--ease),opacity .18s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars > span:nth-child(1){
  transform:translateY(5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars > span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars > span:nth-child(3){
  transform:translateY(-5px) rotate(-45deg);
}
.nav-toggle-text{white-space:nowrap}

/* nav */
.site-nav{
  max-width:var(--maxw);
  margin-inline:auto;
  border-top:1px solid var(--line-soft);
}
.nav-list{display:flex;flex-wrap:wrap;justify-content:center;align-items:stretch}
.nav-item{display:flex}
.nav-link{
  display:block;
  padding:.82rem clamp(.8rem,1.7vw,1.5rem);
  border-left:1px solid var(--line-soft);
  font-family:var(--font-display);
  font-size:.86rem;
  font-weight:700;
  letter-spacing:.1em;
  color:#C4CDD6;
  position:relative;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-item:first-child .nav-link{border-left:0}
.nav-link:hover:not([aria-current="page"]){
  color:var(--white);
  background:rgba(255,255,255,.045);
}
.nav-link[aria-current="page"]{
  color:var(--lime);
  background:rgba(198,255,61,.07);
  box-shadow:inset 0 -2px 0 var(--lime);
}

/* progress */
.progress-track{
  height:2px;
  background:rgba(42,50,59,.85);
  overflow:hidden;
}
.progress-bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--blue) 0%,var(--lime) 100%);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.78rem 1.2rem;
  border:1px solid var(--line);
  background:transparent;
  color:var(--paper);
  font-family:var(--font-display);
  font-size:.82rem;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  line-height:1;
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--sm{padding:.56rem .85rem;font-size:.72rem;letter-spacing:.12em}
.btn--primary{
  background:var(--lime);
  border-color:var(--lime);
  color:var(--ink-900);
  font-weight:800;
}
.btn--primary:hover{background:#DCFF77;border-color:#DCFF77;color:var(--ink-900)}
.btn--matrix{
  background:var(--lime);
  border-color:var(--lime);
  color:var(--ink-900);
  font-weight:800;
}
.btn--matrix:hover{background:#DCFF77;border-color:#DCFF77;color:var(--ink-900)}
.btn--ghost{
  background:transparent;
  border-color:var(--line);
  color:var(--paper);
}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime)}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  background:var(--ink-700);
  border-bottom:1px solid var(--line);
}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.4rem .2rem;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:.72rem var(--gutter);
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mist);
}
.breadcrumb-item{display:inline-flex;align-items:center}
.breadcrumb-item + .breadcrumb-item::before{
  content:"/";
  margin-inline-end:.55rem;
  color:#3D4852;
}
.breadcrumb-link{color:var(--mist);transition:color .16s var(--ease)}
.breadcrumb-link:hover{color:var(--lime)}
.breadcrumb-current{color:var(--paper)}

/* ---------- layout ---------- */
.container{
  width:100%;
  max-width:var(--maxw-narrow);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.container--wide{max-width:var(--maxw)}

.section{
  position:relative;
  padding-block:clamp(2.4rem,6vw,4.8rem);
}
.section--panel{background:var(--ink-800);border-block:1px solid var(--line)}
.section--paper{
  background:var(--paper);
  color:#171B20;
  border-block:1px solid rgba(7,9,12,.16);
}
.section--paper h1,
.section--paper h2,
.section--paper h3,
.section--paper h4{color:#07090C}
.section--paper .eyebrow{color:#5A636C}
.section--paper .note{color:#4C555E;border-left-color:rgba(7,9,12,.2)}
.section--paper .rule{background:rgba(7,9,12,.16)}
.section--paper .panel{background:#FBFAF5;border-color:rgba(7,9,12,.16)}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(1rem,2.2vw,1.75rem);
}
.span-1{grid-column:span 1}
.span-2{grid-column:span 2}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-9{grid-column:span 9}
.span-10{grid-column:span 10}
.span-11{grid-column:span 11}
.span-12{grid-column:1/-1}

/* ---------- editorial parts ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  margin:0 0 .9rem;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--lime);
}
.eyebrow::before{
  content:"";
  display:inline-block;
  width:1.7rem;
  height:1px;
  background:currentColor;
}

.section-title{
  font-size:clamp(1.55rem,3.4vw,2.55rem);
  line-height:1.06;
}

.rule{
  height:1px;
  border:0;
  margin:0;
  background:var(--line);
}

.note{
  margin:0;
  padding-left:1rem;
  border-left:1px solid var(--line);
  font-size:.82rem;
  line-height:1.85;
  color:var(--mist);
}

.panel{
  position:relative;
  padding:clamp(1.05rem,2.3vw,1.7rem);
  background:var(--ink-800);
  border:1px solid var(--line);
}
.panel::before{
  content:"";
  position:absolute;
  left:-1px;
  top:-1px;
  width:15px;
  height:15px;
  border-left:1px solid var(--lime);
  border-top:1px solid var(--lime);
  pointer-events:none;
}
.panel-title{
  margin:0 0 .5rem;
  font-family:var(--font-display);
  font-size:1.08rem;
  letter-spacing:.02em;
  color:var(--white);
}

.tag{
  display:inline-block;
  padding:.24rem .55rem;
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mist);
  line-height:1.4;
}
.tag--lime{background:var(--lime);border-color:var(--lime);color:var(--ink-900);font-weight:700}
.tag--blue{color:var(--blue);border-color:rgba(47,212,255,.55)}
.tag--orange{color:var(--orange);border-color:rgba(255,107,44,.55)}

.data-num{
  display:block;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(2.1rem,6vw,4rem);
  line-height:.94;
  letter-spacing:-.045em;
  color:var(--lime);
  font-variant-numeric:tabular-nums;
}

/* ---------- media frame ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  background:
    repeating-linear-gradient(90deg,rgba(42,50,59,.5) 0 1px,transparent 1px 46px),
    repeating-linear-gradient(0deg,rgba(42,50,59,.5) 0 1px,transparent 1px 46px),
    linear-gradient(135deg,var(--deep-green) 0%,#10151A 58%,#07090C 100%);
  aspect-ratio:16/9;
}
.media-frame > img,
.media-frame > svg,
.media-frame > video{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-frame__caption{
  position:absolute;
  inset:auto 0 0 0;
  padding:.65rem .85rem;
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--mist);
  background:linear-gradient(0deg,rgba(7,9,12,.94) 0%,rgba(7,9,12,0) 100%);
}

.visually-hidden{
  position:absolute;
  width:1px;
  height:1px;
  margin:-1px;
  padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

/* ---------- reveal ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .62s var(--ease),transform .62s var(--ease);
  will-change:opacity,transform;
}
[data-reveal].is-revealed{opacity:1;transform:none}
[data-reveal-delay="1"]{transition-delay:.09s}
[data-reveal-delay="2"]{transition-delay:.18s}
[data-reveal-delay="3"]{transition-delay:.27s}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  background:linear-gradient(180deg,#0B1015 0%,#07090C 72%);
  border-top:1px solid var(--line);
  color:var(--mist);
  font-size:.9rem;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:2px;
  background:linear-gradient(90deg,rgba(47,212,255,0) 0%,var(--blue) 18%,var(--lime) 58%,rgba(198,255,61,0) 100%);
  opacity:.8;
}
.footer-inner{
  max-width:var(--maxw);
  margin-inline:auto;
  padding:clamp(2.4rem,5vw,3.8rem) var(--gutter) 1.4rem;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.65fr);
  gap:clamp(1.6rem,4vw,3.4rem);
  padding-bottom:clamp(1.6rem,4vw,2.8rem);
  border-bottom:1px solid var(--line);
}
.footer-brand{min-width:0}
.footer-wordmark{
  margin:0 0 .3rem;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(1.3rem,2.6vw,1.85rem);
  letter-spacing:.05em;
  color:var(--paper);
}
.footer-kicker{
  margin:0 0 1rem;
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--lime);
}
.footer-note{
  max-width:34ch;
  margin:0 0 1.3rem;
  line-height:1.9;
  color:var(--mist);
}
.footer-cta{margin-top:.1rem}

.footer-nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(1rem,2.4vw,2rem);
}
.footer-col-title{
  margin:0 0 .9rem;
  padding-bottom:.55rem;
  border-bottom:1px solid var(--line);
  font-family:var(--font-display);
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--paper);
}
.footer-list{display:grid;gap:.55rem}
.footer-link{
  display:inline-block;
  color:var(--mist);
  font-size:.88rem;
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.footer-link:hover{color:var(--lime);padding-left:.32rem}

.footer-contact{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:1.1rem 1.5rem;
  padding:clamp(1.4rem,3vw,2.1rem) 0;
  border-bottom:1px solid var(--line);
}
.footer-contact-item{display:grid;gap:.3rem;min-width:0}
.footer-contact-label{
  font-family:var(--font-mono);
  font-size:.63rem;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:#6E7984;
}
.footer-contact-value{
  color:var(--paper);
  font-size:.9rem;
  line-height:1.7;
  word-break:break-word;
}
.footer-contact-note{
  grid-column:1/-1;
  margin:0;
  font-size:.76rem;
  letter-spacing:.02em;
  color:#6E7984;
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.6rem 1.2rem;
  padding-top:1.2rem;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.12em;
  color:#616C77;
}
.footer-copy{margin:0}
.footer-legal{margin:0;color:var(--mist)}

/* ---------- responsive ---------- */
@media (max-width:1040px){
  .nav-link{padding:.8rem .85rem;font-size:.82rem}
}

@media (max-width:899px){
  html{scroll-padding-top:6rem}
  .header-grid{
    grid-template-columns:minmax(0,1fr) auto;
    padding:.7rem var(--gutter);
    gap:.6rem;
  }
  .header-rail--left{display:none}
  .header-rail--right{justify-self:end}
  .header-rail--right .btn--matrix{display:none}
  .masthead{justify-self:start}
  .nav-toggle{display:inline-flex}

  .site-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    display:none;
    max-height:calc(100vh - 100%);
    overflow-y:auto;
    background:#0B1015;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    box-shadow:0 26px 50px -30px rgba(0,0,0,.95);
  }
  .site-nav[data-open]{
    display:block;
    animation:navDrop .24s var(--ease);
  }
  @keyframes navDrop{
    from{opacity:0;transform:translateY(-8px)}
    to{opacity:1;transform:none}
  }
  .nav-list{flex-direction:column}
  .nav-item{display:block}
  .nav-link{
    padding:.95rem var(--gutter);
    border-left:0;
    border-top:1px solid var(--line-soft);
    font-size:.95rem;
    letter-spacing:.12em;
  }
  .nav-item:first-child .nav-link{border-top:0}
  .nav-link[aria-current="page"]{box-shadow:inset 3px 0 0 var(--lime)}

  .footer-top{grid-template-columns:1fr}
  .footer-contact{grid-template-columns:repeat(2,minmax(0,1fr))}

  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-1,.span-2,.span-3,.span-4,.span-5,.span-6,
  .span-7,.span-8,.span-9,.span-10,.span-11{grid-column:1/-1}
}

@media (max-width:600px){
  .brand-mark{width:2.05rem;height:2.05rem;font-size:1rem}
  .brand-tagline{letter-spacing:.2em;font-size:.6rem}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:1.3rem}
  .footer-contact{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr))}
}

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