:root{
  --c-void:#05070B;
  --c-ink:#0B1017;
  --c-graphite:#141B24;
  --c-cyan:#35F2E1;
  --c-violet:#8A5CFF;
  --c-orange:#FF8A3D;
  --c-white:#F2F7FA;
  --c-mist:#A7B4C2;
  --c-glass:rgba(53,242,225,.12);
  --line:rgba(167,180,194,.16);
  --line-strong:rgba(167,180,194,.32);
  --rail-w:236px;
  --header-h:60px;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-grotesk:"Archivo Black","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::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,figure{margin:0;}
ul,ol{list-style:none;padding:0;}
img,svg,video{display:block;max-width:100%;}
a{color:inherit;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--c-cyan);outline-offset:3px;}
body{
  min-height:100vh;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  color:var(--c-white);
  background:
    radial-gradient(1100px 560px at 88% -8%,rgba(138,92,255,.16),transparent 62%),
    radial-gradient(900px 520px at -5% 18%,rgba(53,242,225,.09),transparent 60%),
    var(--c-void);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:.05em;
  line-height:1.18;
  color:var(--c-white);
}
h3,h4,h5{
  font-family:var(--font-grotesk);
  font-weight:800;
  letter-spacing:.045em;
  line-height:1.28;
  color:var(--c-white);
}
p{color:inherit;}
strong{color:var(--c-white);font-weight:700;}
code,kbd,samp,.mono{font-family:var(--font-mono);letter-spacing:.02em;}
::selection{background:rgba(53,242,225,.28);color:var(--c-white);}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
/* ---------- skip link ---------- */
.skip-link{
  position:fixed;top:8px;left:8px;z-index:300;
  padding:10px 16px;
  background:var(--c-cyan);color:#04120f;
  font-family:var(--font-grotesk);font-size:13px;letter-spacing:.08em;
  text-decoration:none;
  transform:translateY(-180%);
  transition:transform .2s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:none;}
/* ---------- header / side rail ---------- */
.site-header{
  position:fixed;inset:0 auto 0 0;
  width:var(--rail-w);z-index:100;
  display:flex;flex-direction:column;
  padding:24px 18px 20px;
  background:
    linear-gradient(180deg,rgba(20,27,36,.97) 0%,rgba(5,7,11,.99) 62%),
    var(--c-ink);
  border-right:1px solid var(--line);
  overflow-y:auto;overscroll-behavior:contain;
  scrollbar-width:thin;
}
.site-header::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(167,180,194,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(167,180,194,.05) 1px,transparent 1px);
  background-size:100% 48px,48px 100%;
  opacity:.5;
}
.rail-top{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  flex:0 0 auto;
}
.brand{
  display:flex;align-items:center;gap:11px;
  text-decoration:none;color:inherit;padding:2px;
}
.brand__mark{
  position:relative;flex:0 0 34px;width:34px;height:34px;
  border:1px solid rgba(53,242,225,.62);
  background:linear-gradient(135deg,rgba(53,242,225,.85) 0 42%,rgba(138,92,255,.4) 42% 100%);
  box-shadow:0 0 18px rgba(53,242,225,.28),inset 0 0 12px rgba(5,7,11,.5);
}
.brand__mark::after{
  content:"";position:absolute;right:3px;bottom:3px;width:7px;height:7px;
  background:var(--c-orange);box-shadow:0 0 10px rgba(255,138,61,.85);
}
.brand__text{display:block;}
.brand__name{
  display:block;
  font-family:var(--font-display);font-weight:900;font-size:16.5px;
  letter-spacing:.06em;line-height:1.2;color:var(--c-white);
  text-shadow:0 0 22px rgba(53,242,225,.22);
}
.brand__line{
  display:block;margin-top:3px;
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--c-mist);
}
.nav-toggle{display:none;}
.nav-toggle__label{font-size:12px;letter-spacing:.1em;}
.nav-toggle__bars{
  position:relative;display:block;width:16px;height:2px;
  background:var(--c-cyan);transition:background-color .2s var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;
  background:var(--c-cyan);transition:transform .24s var(--ease),background-color .2s var(--ease);
}
.nav-toggle__bars::before{top:-6px;}
.nav-toggle__bars::after{top:6px;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:0;transform:rotate(45deg);background:var(--c-orange);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:0;transform:rotate(-45deg);background:var(--c-orange);}
.site-nav{
  position:relative;z-index:1;
  margin-top:30px;flex:1 1 auto;
}
.site-nav__list{display:grid;gap:2px;counter-reset:navidx;}
.site-nav__link{
  display:flex;align-items:center;gap:10px;
  padding:10px 10px 10px 10px;
  font-family:var(--font-body);font-size:14px;letter-spacing:.02em;
  color:var(--c-mist);text-decoration:none;
  border-left:2px solid transparent;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.site-nav__link::before{
  counter-increment:navidx;content:"0" counter(navidx);
  font-family:var(--font-mono);font-size:10px;letter-spacing:0;
  color:var(--c-mist);opacity:.55;
  transition:color .18s var(--ease),opacity .18s var(--ease);
}
.site-nav__link:hover{
  color:var(--c-white);
  background:rgba(53,242,225,.06);
  border-left-color:rgba(53,242,225,.4);
}
.site-nav__link:hover::before{color:var(--c-cyan);opacity:1;}
.site-nav__link[aria-current="page"]{
  color:var(--c-cyan);
  background:linear-gradient(90deg,rgba(53,242,225,.16),rgba(53,242,225,0) 86%);
  border-left-color:var(--c-cyan);
  box-shadow:inset 0 0 30px rgba(53,242,225,.07);
}
.site-nav__link[aria-current="page"]::before{color:var(--c-cyan);opacity:1;}
.rail-quick{
  position:relative;z-index:1;
  margin-top:22px;padding-top:16px;
  border-top:1px solid var(--line);
  display:grid;gap:8px;
}
.rail-quick__title{
  margin:0 0 2px;
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--c-mist);
}
.rail-quick__item{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  width:100%;padding:9px 10px;
  border:1px solid var(--line);
  background:rgba(20,27,36,.72);
  color:var(--c-white);
  font-family:var(--font-body);font-size:12.5px;letter-spacing:.02em;
  text-decoration:none;text-align:left;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.rail-quick__item::after{
  content:"›";font-family:var(--font-mono);font-size:13px;line-height:1;color:var(--c-mist);
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.rail-quick__item:hover,
.rail-quick__item:focus-visible{
  color:var(--c-cyan);border-color:rgba(53,242,225,.7);
  box-shadow:0 0 18px rgba(53,242,225,.18);
}
.rail-quick__item:hover::after{transform:translateX(3px);color:var(--c-cyan);}
.rail-quick__item--accent{border-color:rgba(138,92,255,.55);color:#cfc4ff;}
.rail-quick__item--accent:hover,
.rail-quick__item--accent:focus-visible{
  color:#ffffff;border-color:var(--c-violet);
  box-shadow:0 0 18px rgba(138,92,255,.32);
}
.rail-quick__copy::after{content:none;}
.rail-quick__copy[data-copied="true"]{
  color:var(--c-orange);border-color:var(--c-orange);
  box-shadow:0 0 18px rgba(255,138,61,.26);
}
.rail-contact{
  position:relative;z-index:1;
  margin-top:auto;padding-top:16px;
  border-top:1px solid var(--line);
  font-size:11.5px;line-height:1.65;color:var(--c-mist);
  word-break:break-all;
}
.rail-contact__label{
  display:block;margin-bottom:4px;
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.2em;
  text-transform:uppercase;color:rgba(167,180,194,.78);
}
.rail-contact a{
  color:var(--c-white);text-decoration:none;
  border-bottom:1px solid rgba(167,180,194,.4);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.rail-contact a:hover{color:var(--c-cyan);border-color:var(--c-cyan);}
.to-top{
  position:relative;z-index:1;
  margin-top:14px;
  display:flex;align-items:center;justify-content:flex-start;gap:8px;
  width:100%;padding:9px 10px;
  border:1px solid var(--line);
  color:var(--c-mist);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  opacity:0;pointer-events:none;transform:translateY(6px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.to-top[data-visible="true"]{opacity:1;pointer-events:auto;transform:none;}
.to-top:hover,.to-top:focus-visible{
  color:var(--c-cyan);border-color:rgba(53,242,225,.6);
  box-shadow:0 0 18px rgba(53,242,225,.2);
}
.to-top__icon{font-size:13px;line-height:1;color:var(--c-cyan);}
/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,96px);
  padding:clamp(40px,5vw,60px) 0 26px;
  background:
    radial-gradient(900px 320px at 12% 0%,rgba(53,242,225,.1),transparent 66%),
    radial-gradient(700px 300px at 92% 10%,rgba(138,92,255,.1),transparent 66%),
    linear-gradient(180deg,rgba(11,16,23,1),rgba(5,7,11,1));
  border-top:1px solid var(--line);
  color:var(--c-mist);
  font-size:13.5px;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--c-cyan) 0 16%,var(--c-violet) 16% 30%,rgba(167,180,194,.25) 30% 100%);
}
.site-footer__inner{
  width:100%;max-width:1240px;margin:0 auto;
  padding:0 clamp(18px,4vw,48px);
}
.site-footer__grid{
  display:grid;
  grid-template-columns:minmax(200px,1.45fr) repeat(4,minmax(0,1fr));
  gap:34px 26px;
  align-items:start;
}
.footer-brand{
  font-family:var(--font-display);font-weight:900;font-size:21px;
  letter-spacing:.08em;color:var(--c-white);
  text-shadow:0 0 26px rgba(53,242,225,.22);
}
.footer-brand__sub{
  margin-top:6px;
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--c-mist);
}
.footer-brand__note{
  margin-top:12px;max-width:24em;
  font-size:12.5px;line-height:1.75;color:rgba(167,180,194,.86);
}
.footer-col__title{
  margin:0 0 12px;
  font-family:var(--font-grotesk);font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--c-white);
}
.footer-col__title::after{
  content:"";display:block;width:22px;height:2px;margin-top:8px;
  background:var(--c-cyan);opacity:.85;
}
.footer-list{display:grid;gap:9px;margin:0;}
.footer-list a{
  color:var(--c-mist);text-decoration:none;font-size:13px;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),padding-left .18s var(--ease),border-color .18s var(--ease);
}
.footer-list a:hover,.footer-list a:focus-visible{
  color:var(--c-cyan);padding-left:3px;border-color:rgba(53,242,225,.4);
}
.footer-contact{
  margin-top:clamp(30px,4vw,42px);
  padding-top:22px;
  border-top:1px solid var(--line);
  display:grid;gap:16px 26px;
  grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
}
.footer-contact__item{margin:0;}
.footer-contact__label{
  display:block;margin-bottom:4px;
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.2em;
  text-transform:uppercase;color:rgba(167,180,194,.78);
}
.footer-contact__value{
  display:block;color:var(--c-white);font-size:13px;line-height:1.65;
  word-break:break-word;
}
.footer-link{
  color:var(--c-cyan);text-decoration:none;
  border-bottom:1px solid rgba(53,242,225,.45);
  transition:color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.footer-link:hover{color:var(--c-white);border-color:var(--c-white);box-shadow:0 2px 12px rgba(53,242,225,.25);}
.footer-legal{
  margin-top:22px;padding-top:18px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 22px;
  font-size:11.5px;color:rgba(167,180,194,.84);
}
.footer-legal__meta{
  font-family:var(--font-mono);letter-spacing:.02em;margin:0;
}
.footer-legal__note{margin:0;max-width:56em;line-height:1.7;}
/* ---------- shared layout & components ---------- */
#main-content{display:block;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 clamp(18px,4vw,44px);}
.container--narrow{max-width:820px;}
.section{padding:clamp(44px,6.5vw,84px) 0;}
.section + .section{border-top:1px solid var(--line);}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--c-cyan);
}
.eyebrow::before{content:"";display:inline-block;width:26px;height:1px;background:currentColor;}
.section-title{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(26px,3.4vw,38px);letter-spacing:.05em;line-height:1.2;
  color:var(--c-white);margin-top:14px;
}
.section-lede{
  margin-top:12px;max-width:62ch;
  font-size:15.5px;line-height:1.8;color:var(--c-mist);
}
.breadcrumb{padding-top:22px;}
.breadcrumb__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--c-mist);
}
.breadcrumb__list li{display:flex;align-items:center;gap:8px;}
.breadcrumb__list li + li::before{content:"/";color:rgba(167,180,194,.5);}
.breadcrumb__list a{color:var(--c-mist);text-decoration:none;transition:color .18s var(--ease);}
.breadcrumb__list a:hover{color:var(--c-cyan);}
.breadcrumb__list [aria-current="page"]{color:var(--c-white);}
.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--4{grid-template-columns:repeat(4,minmax(0,1fr));}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border:1px solid transparent;
  font-family:var(--font-grotesk);font-size:13px;letter-spacing:.08em;
  text-decoration:none;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);
}
.btn--primary{background:var(--c-cyan);border-color:var(--c-cyan);color:#04120f;}
.btn--primary:hover,.btn--primary:focus-visible{
  transform:translateY(-1px);box-shadow:0 0 28px rgba(53,242,225,.45);
}
.btn--ghost{background:transparent;border-color:rgba(167,180,194,.35);color:var(--c-white);}
.btn--ghost:hover,.btn--ghost:focus-visible{
  border-color:var(--c-cyan);color:var(--c-cyan);box-shadow:0 0 22px rgba(53,242,225,.18);
}
.btn--violet{background:rgba(138,92,255,.16);border-color:rgba(138,92,255,.6);color:#d6cbff;}
.btn--violet:hover,.btn--violet:focus-visible{
  background:rgba(138,92,255,.26);color:#fff;box-shadow:0 0 24px rgba(138,92,255,.35);
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;border:1px solid var(--line);
  background:rgba(20,27,36,.7);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--c-mist);
}
.tag--cyan{color:var(--c-cyan);border-color:rgba(53,242,225,.45);background:var(--c-glass);}
.tag--violet{color:#cdc0ff;border-color:rgba(138,92,255,.45);background:rgba(138,92,255,.14);}
.tag--orange{color:var(--c-orange);border-color:rgba(255,138,61,.45);background:rgba(255,138,61,.12);}
.panel{
  position:relative;padding:clamp(18px,2.4vw,24px);
  background:linear-gradient(180deg,rgba(20,27,36,.94),rgba(11,16,23,.94));
  border:1px solid var(--line);
}
.panel--glass{
  background:linear-gradient(158deg,rgba(53,242,225,.11),rgba(20,27,36,.92) 56%);
  border-color:rgba(53,242,225,.28);
}
.media-frame{
  position:relative;display:block;overflow:hidden;
  background:linear-gradient(145deg,rgba(20,27,36,1),rgba(11,16,23,1));
  border:1px solid var(--line);
}
.media-frame > img,
.media-frame > video{width:100%;height:100%;object-fit:cover;display:block;}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(5,7,11,0) 52%,rgba(5,7,11,.55) 100%);
}
.media-frame--wide{aspect-ratio:16/9;}
.media-frame--photo{aspect-ratio:3/2;}
.media-frame--tall{aspect-ratio:4/5;}
.media-frame--square{aspect-ratio:1/1;}
/* ---------- scroll reveal ---------- */
html.has-js [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .34s var(--ease),transform .34s var(--ease);
  transition-delay:calc(var(--reveal-delay,0) * 1ms);
}
html.has-js [data-reveal].is-visible{opacity:1;transform:none;}
/* ---------- scroll progress (injected by JS) ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:120;
  background:rgba(167,180,194,.12);pointer-events:none;
}
.scroll-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--c-cyan),var(--c-violet) 68%,var(--c-orange));
  box-shadow:0 0 12px rgba(53,242,225,.5);
}
@media (min-width:1024px){
  body{padding-left:var(--rail-w);}
  .scroll-progress{left:var(--rail-w);}
}
/* ---------- tablet / mobile ---------- */
@media (max-width:1023px){
  body{padding-left:0;}
  #main-content{padding-top:var(--header-h);}
  .site-header{
    inset:0 0 auto 0;width:auto;height:var(--header-h);
    padding:0;
    border-right:0;border-bottom:1px solid var(--line);
    overflow:hidden;
    transition:height .26s var(--ease),border-color .26s var(--ease);
  }
  .site-header::before{display:none;}
  .site-header[data-open]{
    height:100vh;height:100dvh;
    overflow-y:auto;
    border-bottom-color:rgba(53,242,225,.5);
    background:linear-gradient(180deg,rgba(11,16,23,.995),rgba(5,7,11,.995));
  }
  .rail-top{
    height:var(--header-h);width:100%;
    padding:0 14px;flex:0 0 auto;
  }
  .nav-toggle{
    display:inline-flex;align-items:center;gap:9px;
    padding:8px 12px;
    border:1px solid var(--line);
    background:rgba(20,27,36,.8);
    color:var(--c-white);
    font-family:var(--font-grotesk);font-size:12px;letter-spacing:.06em;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .nav-toggle:hover,.nav-toggle:focus-visible{
    border-color:rgba(53,242,225,.6);box-shadow:0 0 18px rgba(53,242,225,.18);
  }
  .site-nav{display:none;flex:none;margin:0;padding:14px 14px 0;}
  .site-header[data-open] .site-nav{display:block;}
  .site-nav__link{font-size:15px;padding:12px 12px;}
  .rail-quick{display:none;margin:16px 14px 0;padding-top:14px;}
  .site-header[data-open] .rail-quick{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .rail-quick__item::after{display:none;}
  .rail-contact{display:none;margin:18px 18px 0;padding-top:14px;}
  .site-header[data-open] .rail-contact{display:block;}
  .to-top{
    position:fixed;right:14px;bottom:16px;z-index:95;
    width:auto;margin:0;padding:11px 14px;
    background:rgba(11,16,23,.95);
    border-color:rgba(53,242,225,.5);
    color:var(--c-cyan);
    box-shadow:0 0 22px rgba(53,242,225,.18);
  }
  .to-top__label{display:none;}
  .site-header[data-open] .to-top{display:none;}
  .site-footer__grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:30px 22px;
  }
  .footer-col--brand{grid-column:1 / -1;}
}
@media (max-width:900px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:620px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr;}
  .site-footer__grid{grid-template-columns:1fr;}
  .footer-legal{flex-direction:column;align-items:flex-start;}
}
/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  html.has-js [data-reveal]{opacity:1 !important;transform:none !important;}
  .to-top{transform:none !important;}
  .scroll-progress__bar{transition:none !important;}
}