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

:root{
  --c-ink:#0B1F1A;
  --c-panel:#101314;
  --c-layer:#12312A;
  --c-cyan:#35F0D0;
  --c-amber:#F2B33D;
  --c-red:#8E2B2B;
  --c-paper:#F4F6F3;
  --c-mist:#9BA8A2;
  --c-text:#1B2422;
  --c-line:#22423A;

  --font-title:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --rail:96px;
  --rail-wide:200px;
  --bar-h:60px;
  --wrap-max:1240px;
  --gap:24px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --p:0;
}

@media (min-width:768px){ :root{ --bar-h:68px } }

html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:calc(var(--bar-h) + 16px)}

@media (prefers-reduced-motion:no-preference){ html{scroll-behavior:smooth} }

body{
  margin:0;
  background:var(--c-ink);
  color:var(--c-paper);
  font-family:var(--font-body);
  font-weight:400;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-title);
  font-weight:800;
  line-height:1.06;
  letter-spacing:-.01em;
  color:inherit;
}
h1{font-size:clamp(2.1rem,5vw,4.5rem)}
h2{font-size:clamp(1.6rem,3.4vw,2.6rem)}
h3{font-size:clamp(1.25rem,2.2vw,1.75rem)}

p{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
strong{font-weight:700}

:focus-visible{outline:2px solid var(--c-cyan);outline-offset:3px}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

.wrap{
  width:100%;
  max-width:var(--wrap-max);
  margin-inline:auto;
  padding-inline:clamp(16px,4vw,48px);
}

.section{position:relative;padding-block:clamp(40px,6vw,88px)}
.section--paper{background:var(--c-paper);color:var(--c-text)}
.section--paper .eyebrow{color:#4C5C57}
.section--paper .lede{color:#3B4A45}

.section-head{display:grid;gap:12px;max-width:64ch;margin-bottom:clamp(20px,3vw,36px)}

.display{
  font-family:var(--font-title);
  font-weight:800;
  font-size:clamp(2.2rem,6vw,4.5rem);
  line-height:1.02;
  letter-spacing:-.015em;
}

.lede{
  font-size:clamp(16px,1.55vw,19px);
  line-height:1.7;
  color:var(--c-mist);
  max-width:54ch;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--c-mist);
}
.eyebrow::before{
  content:"";
  width:2px;
  height:16px;
  background:var(--c-cyan);
  flex:0 0 auto;
}

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

.link-underline{
  background-image:linear-gradient(var(--c-cyan),var(--c-cyan));
  background-repeat:no-repeat;
  background-position:0 100%;
  background-size:0 1px;
  transition:background-size 160ms var(--ease),color 160ms var(--ease);
}
.link-underline:hover,.link-underline:focus-visible{background-size:100% 1px;color:var(--c-cyan)}

.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:12px 22px;
  font-size:14px;
  font-weight:500;
  letter-spacing:.03em;
  color:var(--c-paper);
  background:transparent;
  border:1px solid var(--c-line);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
  transition:background-color 160ms var(--ease),border-color 160ms var(--ease),color 160ms var(--ease);
}
.btn:hover,.btn:focus-visible{border-color:var(--c-cyan);color:var(--c-cyan);background:rgba(53,240,208,.09)}
.btn--primary{background:var(--c-cyan);border-color:var(--c-cyan);color:#04120F;font-weight:700}
.btn--primary:hover,.btn--primary:focus-visible{background:#6BF6DE;color:#04120F;border-color:#6BF6DE}
.btn--ghost{border-color:var(--c-line);color:var(--c-mist)}

.tag{
  display:inline-block;
  padding:3px 9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--c-mist);
  border:1px solid var(--c-line);
  background:rgba(18,49,42,.5);
}
.tag--amber{color:var(--c-amber);border-color:rgba(242,179,61,.45)}
.tag--red{color:#E36A6A;border-color:rgba(142,43,43,.7);background:rgba(142,43,43,.18)}

.panel{
  background:var(--c-panel);
  border:1px solid var(--c-line);
  padding:clamp(16px,2.2vw,28px);
}
.panel--cut{clip-path:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,0 100%)}

.grid{display:grid;gap:clamp(16px,2.4vw,32px)}
.grid--2{grid-template-columns:1fr}
.grid--3{grid-template-columns:1fr}
.grid--7-5{grid-template-columns:1fr}
@media (min-width:900px){
  .grid--2{grid-template-columns:repeat(2,1fr)}
  .grid--7-5{grid-template-columns:7fr 5fr}
}
@media (min-width:1024px){
  .grid--3{grid-template-columns:repeat(3,1fr)}
}

.data-strip{
  display:grid;
  gap:0;
  background:var(--c-panel);
  border:1px solid var(--c-line);
  border-left:2px solid var(--c-cyan);
  padding:clamp(14px,2vw,24px);
  overflow-x:auto;
}
@media (min-width:1200px){ .data-strip{min-height:320px} }

.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--c-layer);
  border:1px solid var(--c-line);
  clip-path:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,0 100%);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(53,240,208,.07) 0 1px,transparent 1px 14px);
  mix-blend-mode:screen;
}
.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;
  left:0;
  bottom:0;
  padding:8px 12px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--c-paper);
  background:rgba(11,31,26,.82);
  border-top:1px solid var(--c-line);
  border-right:1px solid var(--c-line);
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding-block:16px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--c-mist);
}
.breadcrumb a{color:var(--c-mist);transition:color 160ms var(--ease)}
.breadcrumb a:hover,.breadcrumb a:focus-visible{color:var(--c-cyan)}
.breadcrumb__sep{color:var(--c-line)}
.breadcrumb [aria-current="page"]{color:var(--c-paper)}

/* ================= HEADER ================= */
.skip-link{
  position:fixed;
  top:-140px;
  left:16px;
  z-index:200;
  padding:11px 18px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:#04120F;
  background:var(--c-cyan);
  clip-path:polygon(0 0,100% 0,100% 100%,12px 100%,0 calc(100% - 12px));
  transition:top 160ms var(--ease);
}
.skip-link:focus{top:12px}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  display:flex;
  align-items:center;
  gap:12px;
  min-height:var(--bar-h);
  padding:10px clamp(14px,4vw,28px);
  background:var(--c-panel);
  border-bottom:1px solid var(--c-line);
  color:var(--c-paper);
}

.site-header__progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:rgba(53,240,208,.12);
  pointer-events:none;
  overflow:hidden;
}
.site-header__progress-fill{
  position:absolute;
  inset:0;
  display:block;
  transform:scaleX(var(--p,0));
  transform-origin:left center;
  background:linear-gradient(90deg,var(--c-cyan),var(--c-amber));
  transition:transform 120ms linear;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
  color:var(--c-paper);
}
.brand__mark{
  position:relative;
  flex:0 0 auto;
  width:26px;
  height:26px;
  border:2px solid var(--c-cyan);
  clip-path:polygon(0 0,100% 0,100% 64%,64% 100%,0 100%);
  transition:border-color 160ms var(--ease);
}
.brand__mark::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:14px;
  height:2px;
  background:var(--c-cyan);
  transform:translate(-50%,-50%) rotate(-45deg);
}
.brand__text{display:flex;flex-direction:column;min-width:0;line-height:1.15}
.brand__name{
  font-family:var(--font-title);
  font-weight:800;
  font-size:16px;
  letter-spacing:.02em;
  color:var(--c-paper);
}
.brand__sub{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--c-mist);
  transition:opacity 160ms var(--ease),transform 160ms var(--ease);
}
.brand:hover .brand__mark{border-color:var(--c-amber)}
.brand:hover .brand__mark::after{background:var(--c-amber)}
.brand:hover .brand__name{color:var(--c-cyan)}

.channel-tag{
  display:none;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--c-mist);
}
.channel-tag__dot{
  width:6px;
  height:6px;
  flex:0 0 auto;
  background:var(--c-amber);
  box-shadow:0 0 0 3px rgba(242,179,61,.16);
}
@media (min-width:768px){ .channel-tag{display:inline-flex} }

.header-tools{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}
.icp-badge{
  display:none;
  padding:4px 8px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.06em;
  color:var(--c-mist);
  border:1px solid var(--c-line);
}
@media (min-width:1100px){ .icp-badge{display:inline-block} }

.header-cta{
  display:none;
  align-items:center;
  justify-content:center;
  padding:8px 14px;
  font-size:12px;
  font-weight:500;
  letter-spacing:.06em;
  color:var(--c-cyan);
  border:1px solid var(--c-line);
  background:rgba(53,240,208,.07);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  transition:background-color 160ms var(--ease),border-color 160ms var(--ease),color 160ms var(--ease);
}
.header-cta:hover,.header-cta:focus-visible{background:var(--c-cyan);border-color:var(--c-cyan);color:#04120F}
@media (min-width:560px){ .header-cta{display:inline-flex} }

.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:38px;
  padding:0 11px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--c-paper);
  border:1px solid var(--c-line);
  background:transparent;
  transition:border-color 160ms var(--ease),color 160ms var(--ease);
}
.nav-toggle:hover{border-color:var(--c-cyan);color:var(--c-cyan)}
.nav-toggle__bars{display:grid;gap:5px;width:16px}
.nav-toggle__bars span{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform 200ms var(--ease);
}
.nav-toggle[aria-expanded="true"]{border-color:var(--c-cyan);color:var(--c-cyan)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child{transform:translateY(3.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

.primary-nav{
  position:absolute;
  left:0;
  right:0;
  top:100%;
  padding:14px clamp(14px,4vw,28px) 22px;
  background:var(--c-layer);
  border-bottom:1px solid var(--c-line);
  max-height:min(76vh,600px);
  overflow-y:auto;
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transform:translateY(-10px);
  transition:opacity 200ms var(--ease),transform 200ms var(--ease),visibility 0s linear 200ms;
}
.primary-nav[data-open]{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transform:none;
  transition-delay:0s;
}
.primary-nav__label{
  margin-bottom:8px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--c-mist);
}

.nav-list{display:grid;gap:0}
.nav-link{
  position:relative;
  display:grid;
  grid-template-columns:auto 1fr;
  align-items:baseline;
  gap:12px;
  padding:13px 10px;
  border-top:1px solid var(--c-line);
  color:var(--c-paper);
  transition:background-color 160ms var(--ease),color 160ms var(--ease);
}
.nav-list__item:last-child .nav-link{border-bottom:1px solid var(--c-line)}
.nav-link__idx{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--c-mist);
  transition:color 160ms var(--ease);
}
.nav-link__label{font-size:15px;letter-spacing:.01em;line-height:1.4}
.nav-link:hover,.nav-link:focus-visible{background:rgba(53,240,208,.08);color:var(--c-cyan)}
.nav-link:hover .nav-link__idx,.nav-link:focus-visible .nav-link__idx{color:var(--c-cyan)}
.nav-link[aria-current="page"]{background:rgba(53,240,208,.1);color:var(--c-cyan)}
.nav-link[aria-current="page"] .nav-link__idx{color:var(--c-amber)}
.nav-link[aria-current="page"]::before{
  content:"";
  position:absolute;
  left:0;
  top:8px;
  bottom:8px;
  width:2px;
  background:var(--c-cyan);
}

.site-header[data-condensed] .brand__sub{opacity:0;transform:translateY(-4px)}

body.is-nav-open{overflow:hidden}

/* desktop: left rail */
@media (min-width:1200px){
  body{padding-left:var(--rail)}

  .skip-link{left:calc(var(--rail) + 16px)}

  .site-header{
    position:fixed;
    top:0;
    left:0;
    bottom:0;
    right:auto;
    width:var(--rail);
    min-height:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:0;
    border-bottom:0;
    border-right:1px solid var(--c-line);
    background:linear-gradient(180deg,#101314 0%,#0E1A17 55%,#0B1F1A 100%);
    transition:width 220ms var(--ease);
  }
  .site-header:hover,.site-header:focus-within{width:var(--rail-wide)}

  .site-header__progress{
    left:auto;
    right:-1px;
    top:0;
    bottom:0;
    width:2px;
    height:auto;
  }
  .site-header__progress-fill{
    transform:scaleY(var(--p,0));
    transform-origin:top center;
    background:linear-gradient(180deg,var(--c-cyan),var(--c-amber));
  }

  .brand{
    flex-direction:column;
    align-items:flex-start;
    gap:10px;
    padding:20px 12px 14px;
    border-bottom:1px solid var(--c-line);
  }
  .brand__mark{width:28px;height:28px}
  .brand__name{font-size:15px;line-height:1.2;max-width:100%}

  .channel-tag{
    display:flex;
    padding:12px 12px 0;
    font-size:9px;
    letter-spacing:.08em;
    line-height:1.5;
  }

  .primary-nav{
    position:static;
    order:2;
    flex:1 1 auto;
    padding:14px 10px 0;
    background:transparent;
    border:0;
    max-height:none;
    overflow:visible;
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:none;
  }
  .primary-nav__label{
    padding:0 8px;
    margin-bottom:10px;
    font-size:9px;
    letter-spacing:.16em;
  }
  .nav-link{
    grid-template-columns:1fr;
    gap:3px;
    padding:9px 8px 10px;
    border-top:0;
    border-bottom:1px solid rgba(34,66,58,.75);
  }
  .nav-link__idx{font-size:9px}
  .nav-link__label{font-size:12px;line-height:1.35;word-break:break-word}
  .nav-link[aria-current="page"]::before{top:9px;bottom:9px;left:0}

  .header-tools{
    order:3;
    margin-left:0;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    padding:14px 12px 20px;
    border-top:1px solid var(--c-line);
  }
  .icp-badge{display:block;text-align:center;font-size:9px;line-height:1.5}
  .header-cta{display:flex;width:100%;padding:9px 6px;font-size:12px}
  .nav-toggle{display:none}
}

/* ================= FOOTER ================= */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,96px);
  border-top:1px solid var(--c-line);
  color:var(--c-mist);
  font-size:14px;
  background:
    repeating-linear-gradient(135deg,rgba(53,240,208,.05) 0 1px,transparent 1px 16px),
    linear-gradient(180deg,#0B1F1A 0%,#0E1A18 100%);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:2px;
  height:64px;
  background:var(--c-cyan);
}

.site-footer__grid{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(24px,4vw,40px);
  padding-block:clamp(36px,5vw,64px);
}
@media (min-width:640px){
  .site-footer__grid{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:1024px){
  .site-footer__grid{grid-template-columns:1.5fr .9fr 1.5fr .9fr}
}

.footer-brand__name{
  font-family:var(--font-title);
  font-weight:800;
  font-size:clamp(22px,3vw,30px);
  color:var(--c-paper);
  letter-spacing:.01em;
}
.footer-brand__line{
  margin-top:10px;
  max-width:40ch;
  font-size:13px;
  line-height:1.8;
  color:var(--c-mist);
}
.footer-brand__meta{
  margin-top:14px;
  font-size:11px;
  letter-spacing:.08em;
  color:var(--c-amber);
}

.footer-col__title{
  display:flex;
  align-items:center;
  gap:8px;
  padding-bottom:10px;
  margin-bottom:14px;
  border-bottom:1px solid var(--c-line);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--c-paper);
}
.footer-col__title::before{
  content:"";
  width:2px;
  height:12px;
  background:var(--c-cyan);
  flex:0 0 auto;
}

.footer-links{display:grid;gap:8px}
.footer-links a{
  display:inline-block;
  padding-block:2px;
  font-size:13px;
  color:var(--c-mist);
  background-image:linear-gradient(var(--c-cyan),var(--c-cyan));
  background-repeat:no-repeat;
  background-position:0 100%;
  background-size:0 1px;
  transition:background-size 160ms var(--ease),color 160ms var(--ease);
}
.footer-links a:hover,.footer-links a:focus-visible{color:var(--c-cyan);background-size:100% 1px}

.footer-contact__row{
  display:grid;
  grid-template-columns:44px 1fr;
  gap:8px;
  margin-bottom:8px;
  font-size:13px;
  line-height:1.7;
  color:var(--c-paper);
  word-break:break-word;
}
.footer-contact__k{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--c-mist);
  padding-top:3px;
}
.footer-contact__note{
  margin-top:12px;
  font-size:12px;
  line-height:1.8;
  color:var(--c-mist);
}

.copy-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:2px 0 6px;
  padding:7px 13px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--c-cyan);
  border:1px solid var(--c-line);
  background:rgba(53,240,208,.06);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  transition:background-color 160ms var(--ease),border-color 160ms var(--ease);
}
.copy-btn:hover,.copy-btn:focus-visible{border-color:var(--c-cyan);background:rgba(53,240,208,.16)}

.footer-feedback{
  min-height:18px;
  margin-bottom:4px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
  color:var(--c-amber);
  opacity:0;
  transition:opacity 160ms var(--ease);
}
.footer-feedback.is-active{opacity:1}

.footer-icp{
  margin-top:16px;
  padding-top:12px;
  border-top:1px dashed rgba(34,66,58,.9);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--c-mist);
}

.site-footer__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding-block:18px;
  border-top:1px solid var(--c-line);
  font-size:12px;
  color:var(--c-mist);
}
.footer-base__note{font-size:11px;letter-spacing:.14em;color:var(--c-mist)}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}