:root{
  --ink-900:#05101F;
  --ink-800:#0B2138;
  --line:#1B3C5E;
  --line-soft:rgba(27,60,94,.62);
  --green:#3DFF9E;
  --green-soft:#9CFFCB;
  --orange:#FF8A2B;
  --violet:#A46BFF;
  --paper:#EAF2FF;
  --muted:#93A9C6;
  --paper-white:#F5F8FC;
  --ink-on-paper:#0A1A2B;
  --on-green:#04121E;
  --font-head:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"Noto Sans SC","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,"Courier New",monospace;
  --container:1220px;
  --pad:24px;
  --header-h:78px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-up:0 16px 34px rgba(0,0,0,.42);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
input,select,textarea{font:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--font-head);font-weight:900;line-height:1.14;letter-spacing:-.02em}
:focus-visible{outline:2px solid var(--green);outline-offset:3px;border-radius:4px}
[hidden]{display:none !important}

.skip-link{
  position:fixed;
  top:-64px;
  left:16px;
  z-index:200;
  padding:11px 18px;
  border-radius:0 0 10px 10px;
  background:var(--green);
  color:var(--on-green);
  font-weight:700;
  font-size:14px;
  transition:top .22s ease;
}
.skip-link:focus{top:0}

/* ---------- layout ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:var(--pad);
  padding-right:var(--pad);
}
.section{position:relative;padding:64px 0}
.section--deep{background:var(--ink-800)}
.section--paper{background:var(--paper-white);color:var(--ink-on-paper)}
.section--paper h1,.section--paper h2,.section--paper h3,.section--paper h4{color:var(--ink-on-paper)}
.section--paper .label,.section--paper .eyebrow{color:#5A6E85}
.section--paper .section-lede{color:#43566B}
.divider{height:1px;border:0;margin:0;background:var(--line)}
.slant-edge{
  display:block;
  height:10px;
  background:linear-gradient(90deg,var(--green),rgba(61,255,158,0));
  clip-path:polygon(0 0,100% 0,0 100%);
}
.section-head{margin-bottom:28px}
.section-title{font-size:clamp(26px,3.4vw,40px);margin-bottom:10px}
.section-lede{max-width:62ch;color:var(--muted);font-size:16px}

/* ---------- buttons / tags ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 20px;
  border:1px solid transparent;
  border-radius:var(--radius-sm);
  font-family:var(--font-head);
  font-weight:700;
  font-size:14.5px;
  line-height:1;
  white-space:nowrap;
  transition:transform .22s ease,background .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.btn--primary{background:var(--green);color:var(--on-green);box-shadow:0 6px 22px rgba(61,255,158,.22)}
.btn--primary:hover{background:var(--green-soft);transform:translateY(-2px)}
.btn--ghost{border-color:var(--line);color:var(--paper)}
.btn--ghost:hover{border-color:var(--green);color:var(--green)}
.btn--violet{border-color:rgba(164,107,255,.55);background:rgba(164,107,255,.14);color:#CDB4FF}
.btn--violet:hover{background:rgba(164,107,255,.24);color:#E4D6FF}

.label,.eyebrow{
  font-family:var(--font-body);
  font-size:12px;
  font-weight:600;
  line-height:1.5;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--muted);
}
.eyebrow{display:block;margin-bottom:8px}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 10px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--muted);
  background:rgba(11,33,56,.6);
}
.tag--green{border-color:rgba(61,255,158,.5);color:var(--green);background:rgba(61,255,158,.10)}
.tag--orange{border-color:rgba(255,138,43,.5);color:var(--orange);background:rgba(255,138,43,.10)}
.tag--violet{border-color:rgba(164,107,255,.5);color:var(--violet);background:rgba(164,107,255,.10)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:linear-gradient(180deg,rgba(5,16,31,.88),rgba(5,16,31,.34));
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header[data-scrolled="true"]{
  background:rgba(5,16,31,.975);
  border-bottom-color:var(--line);
  box-shadow:0 12px 30px rgba(0,0,0,.45);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:16px;
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--pad);
  min-height:var(--header-h);
  transition:min-height .3s ease;
}
.site-header[data-scrolled="true"] .header-inner{min-height:62px}

.brand{
  order:1;
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
  margin-right:auto;
}
.brand__mark{
  width:38px;
  height:38px;
  flex:0 0 auto;
  display:grid;
  place-items:center;
  background:var(--green);
  color:var(--on-green);
  font-family:var(--font-mono);
  font-size:16px;
  font-weight:700;
  letter-spacing:-.04em;
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}
.brand__text{display:flex;flex-direction:column;gap:2px}
.brand__name{
  font-family:var(--font-head);
  font-size:18px;
  font-weight:900;
  line-height:1.1;
  letter-spacing:-.02em;
  color:var(--paper);
}
.brand__tag{font-size:11px;line-height:1.3;letter-spacing:.1em;color:var(--muted)}

.nav{order:2;margin-left:auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{display:block}
.nav-link{
  display:inline-block;
  padding:9px 12px;
  border-radius:8px;
  font-size:14.5px;
  font-weight:500;
  line-height:1;
  color:var(--muted);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--paper);background:rgba(61,255,158,.09)}
.nav-link[aria-current="page"]{
  color:var(--green);
  background:rgba(61,255,158,.12);
  box-shadow:inset 0 -2px 0 0 var(--green);
}

.header-actions{order:3;display:flex;align-items:center;gap:10px;margin-left:14px}
.fav-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(11,33,56,.78);
  font-size:13.5px;
  font-weight:500;
  line-height:1;
  color:var(--paper);
  white-space:nowrap;
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.fav-pill:hover{border-color:var(--orange);background:rgba(255,138,43,.12);transform:translateY(-2px)}
.fav-pill__dot{
  width:8px;
  height:8px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 0 4px rgba(255,138,43,.16);
}
.fav-pill__short{display:none}

.nav-toggle{
  order:4;
  display:none;
  position:relative;
  width:44px;
  height:44px;
  flex:0 0 auto;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:rgba(11,33,56,.7);
}
.nav-toggle__bar{
  position:absolute;
  left:12px;
  right:12px;
  height:2px;
  background:var(--paper);
  border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle__bar:nth-child(1){top:15px}
.nav-toggle__bar:nth-child(2){top:21px}
.nav-toggle__bar:nth-child(3){top:27px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(6px) 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(-6px) rotate(-45deg)}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:72px;
  padding:60px 0 30px;
  background:var(--ink-800);
  border-top:1px solid var(--line);
}
.footer-slant{
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:6px;
  background:linear-gradient(90deg,var(--green),var(--orange) 46%,var(--violet));
  clip-path:polygon(0 0,100% 0,100% 100%,0 42%);
  opacity:.9;
}
.footer-inner{position:relative}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-brand__name{
  font-family:var(--font-head);
  font-size:20px;
  font-weight:900;
  letter-spacing:-.02em;
  color:var(--paper);
}
.footer-brand__desc{margin-top:10px;max-width:34ch;font-size:14px;color:var(--muted)}
.footer-brand__since{display:flex;align-items:baseline;gap:8px;margin-top:14px;color:var(--green);font-size:16px}
.footer-col__title{
  font-size:13px;
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--green);
  margin-bottom:14px;
}
.footer-list{display:flex;flex-direction:column;gap:9px}
.footer-link{
  font-size:14px;
  color:var(--muted);
  transition:color .2s ease;
}
.footer-link:hover{color:var(--green)}
.footer-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 20px;
  margin-top:42px;
  padding-top:20px;
  border-top:1px solid var(--line-soft);
  font-size:13px;
}
.footer-icp{color:#7C93B1;font-size:12.5px}
.footer-contact{
  display:flex;
  flex-wrap:wrap;
  gap:20px 40px;
  margin-top:20px;
}
.footer-contact__item{display:flex;flex-direction:column;gap:4px;max-width:34ch}
.footer-contact__value{font-size:14px;color:var(--paper)}
.footer-bar{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  align-items:center;
  gap:10px;
  margin-top:26px;
  padding-top:18px;
  border-top:1px solid var(--line-soft);
  font-size:12.5px;
  color:#7C93B1;
}
.footer-bar__note{color:#7C93B1}

/* ---------- cards / grid ---------- */
.grid{display:grid;gap:16px}
.grid--bento{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}
.grid--2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.grid--3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.g-3{grid-column:span 3}
.g-4{grid-column:span 4}
.g-6{grid-column:span 6}
.g-8{grid-column:span 8}
.g-12{grid-column:span 12}

.card{
  position:relative;
  padding:22px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--ink-800);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-4px);border-color:#2C5C8C;box-shadow:var(--shadow-up)}
.card--paper{background:var(--paper-white);color:var(--ink-on-paper);border-color:rgba(10,26,43,.14)}
.card--paper h1,.card--paper h2,.card--paper h3{color:var(--ink-on-paper)}
.card--paper p{color:#43566B}
.card--focus{border-color:rgba(61,255,158,.55);background:linear-gradient(160deg,rgba(61,255,158,.10),rgba(11,33,56,.9) 58%)}
.stack-card{
  box-shadow:12px -12px 0 -1px var(--ink-900),12px -12px 0 0 var(--line);
}
.stack-card.card--paper{box-shadow:12px -12px 0 -1px var(--ink-900),12px -12px 0 0 var(--line)}

.stat{display:flex;flex-direction:column;gap:6px}
.stat__value{
  display:flex;
  align-items:baseline;
  gap:6px;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(32px,5vw,56px);
  line-height:1;
  letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;
  color:var(--green);
}
.stat__unit{font-family:var(--font-body);font-size:14px;font-weight:500;color:var(--muted)}
.stat__caption{font-size:13px;color:var(--muted)}
.card--paper .stat__caption{color:#43566B}

/* ---------- media placeholder ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(142deg,#0B2138 0%,#05101F 58%,#0E2A46 100%);
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(27,60,94,.42) 1px,transparent 1px),linear-gradient(90deg,rgba(27,60,94,.42) 1px,transparent 1px);
  background-size:34px 34px;
  opacity:.55;
}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--3x2{aspect-ratio:3/2}
.media--1x1{aspect-ratio:1/1}
.media__img{width:100%;height:100%;object-fit:cover}
.media__caption{
  position:absolute;
  left:12px;
  right:12px;
  bottom:12px;
  z-index:2;
  padding:7px 11px;
  border-radius:8px;
  background:rgba(5,16,31,.76);
  font-size:12px;
  line-height:1.5;
  color:var(--paper);
}
.media__tag{position:absolute;top:12px;left:12px;z-index:2}

/* ---------- rail ---------- */
.rail{position:relative}
.rail__head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}
.rail__nav{display:inline-flex;gap:8px}
.rail__btn{
  width:38px;
  height:38px;
  display:grid;
  place-items:center;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:rgba(11,33,56,.82);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:15px;
  line-height:1;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.rail__btn:hover{border-color:var(--green);color:var(--green);background:rgba(61,255,158,.10)}
.rail__track{
  display:flex;
  gap:14px;
  overflow-x:auto;
  padding:4px 0 18px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
  scrollbar-color:var(--line) transparent;
}
.rail__track::-webkit-scrollbar{height:8px}
.rail__track::-webkit-scrollbar-track{background:rgba(27,60,94,.3);border-radius:8px}
.rail__track::-webkit-scrollbar-thumb{background:var(--line);border-radius:8px}
.rail__track > *{flex:0 0 min(320px,82vw);scroll-snap-align:start}

/* ---------- filter ---------- */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.filter-btn{
  padding:8px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
  font-size:13px;
  font-weight:600;
  line-height:1;
  letter-spacing:.02em;
  color:var(--muted);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.filter-btn:hover{color:var(--paper);border-color:#2C5C8C}
.filter-btn[aria-pressed="true"]{background:var(--green);border-color:var(--green);color:var(--on-green)}
.section--paper .filter-btn{color:#5A6E85;border-color:rgba(10,26,43,.18)}
.section--paper .filter-btn[aria-pressed="true"]{background:var(--ink-on-paper);border-color:var(--ink-on-paper);color:var(--paper-white)}

/* ---------- prose / breadcrumb ---------- */
.prose{max-width:68ch;font-size:17px;line-height:1.75;color:#C9D8EC}
.prose h2{font-size:clamp(22px,2.6vw,30px);margin:2em 0 .6em}
.prose h3{font-size:19px;margin:1.7em 0 .5em;color:var(--paper)}
.prose p{margin:0 0 1.1em}
.prose strong{color:var(--paper);font-weight:700}
.prose ul{padding-left:1.1em;list-style:disc;margin:0 0 1.2em}
.prose li{margin-bottom:.45em}
.section--paper .prose{color:#33475C}
.section--paper .prose h2,.section--paper .prose h3,.section--paper .prose strong{color:var(--ink-on-paper)}

.breadcrumb{padding:18px 0 4px}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb__list li{display:flex;align-items:center;gap:8px}
.breadcrumb__list li + li::before{content:"/";color:var(--line)}
.breadcrumb__link{color:var(--muted);transition:color .2s ease}
.breadcrumb__link:hover{color:var(--green)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .nav-link{padding:9px 9px;font-size:14px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:26px}
}
@media (max-width:980px){
  :root{--pad:16px;--header-h:66px}
  .header-inner{flex-wrap:wrap;gap:10px;padding-top:8px;padding-bottom:8px}
  .brand{order:1;margin-right:0}
  .brand__tag{display:none}
  .header-actions{order:2;margin-left:auto;gap:8px}
  .nav-toggle{order:3;display:block;margin-left:0}
  .nav{
    order:4;
    flex:1 0 100%;
    display:none;
    margin:0 calc(var(--pad) * -1);
    padding:0 var(--pad);
    border-top:1px solid var(--line-soft);
    background:rgba(5,16,31,.985);
  }
  .nav[data-open]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;padding:8px 0 14px}
  .nav-link{display:block;padding:13px 10px;font-size:16px;border-radius:8px;border-bottom:1px solid rgba(27,60,94,.45)}
  .nav-link[aria-current="page"]{box-shadow:inset 3px 0 0 0 var(--green)}
  .grid--bento,.grid--3{grid-template-columns:repeat(2,1fr);gap:14px}
  .g-3,.g-4,.g-6{grid-column:span 1}
  .g-8,.g-12{grid-column:span 2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .site-footer{margin-top:56px;padding:48px 0 26px}
}
@media (max-width:860px){
  .fav-pill__text{display:none}
  .fav-pill__short{display:inline}
  .fav-pill{padding:9px 12px;gap:7px}
}
@media (max-width:680px){
  .grid--bento,.grid--2,.grid--3{grid-template-columns:1fr}
  .g-3,.g-4,.g-6,.g-8,.g-12{grid-column:span 1}
  .section{padding:46px 0}
  .rail__track > *{flex:0 0 84vw}
  .footer-bar{flex-direction:column;align-items:flex-start}
}
@media (max-width:560px){
  .brand__name{font-size:16px}
  .brand__mark{width:34px;height:34px;font-size:14px}
  .btn{padding:11px 15px;font-size:13.5px}
  .header-actions .btn--primary{padding:11px 13px}
  .footer-grid{grid-template-columns:1fr}
  .card{padding:18px}
  .stack-card,.stack-card.card--paper{box-shadow:8px -8px 0 -1px var(--ink-900),8px -8px 0 0 var(--line)}
}

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