:root{
  --ink-deep:#0B211C;
  --ink-panel:#12332B;
  --line:#26433A;
  --line-soft:rgba(38,67,58,.55);
  --cyan:#4FE3C1;
  --cyan-soft:rgba(79,227,193,.14);
  --orange:#FF8A3D;
  --slate:#1A1F1E;
  --mist:#8FA39C;
  --mist-hi:#AFC6BF;
  --bone:#E8EFEA;
  --glass:rgba(79,227,193,.10);
  --paper:#F2EEE3;

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","Cascadia Mono","Roboto Mono",Menlo,Consolas,monospace;

  --shell:1280px;
  --gutter:24px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

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

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  background-color:var(--ink-deep);
  background-image:
    linear-gradient(to right,rgba(38,67,58,.32) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(38,67,58,.32) 1px,transparent 1px);
  background-size:64px 64px;
  color:var(--bone);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

main{display:block;}

h1,h2,h3,h4,p,figure,blockquote{margin:0;}
h1,h2,h3,h4{font-weight:800;line-height:1.22;letter-spacing:-.015em;color:var(--bone);}
h1{font-size:clamp(30px,4vw,44px);}
h2{font-size:clamp(22px,2.4vw,28px);}
h3{font-size:20px;}

ul,ol{margin:0;}
img{max-width:100%;height:auto;display:block;}

a{color:var(--cyan);text-decoration:none;}
a:hover{color:var(--cyan);}

::selection{background:var(--cyan);color:var(--ink-deep);}

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

.visually-hidden{
  position:absolute!important;
  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;
}

.skip-link{
  position:fixed;
  left:16px;
  top:12px;
  z-index:90;
  padding:10px 18px;
  background:var(--paper);
  color:var(--ink-deep);
  font-size:14px;
  font-weight:700;
  border:1px solid var(--orange);
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translateY(0);}

/* ---------- header ---------- */
.site-header{
  position:relative;
  isolation:isolate;
  background-color:var(--ink-deep);
  background-image:
    linear-gradient(to right,rgba(38,67,58,.62) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(38,67,58,.62) 1px,transparent 1px);
  background-size:64px 64px;
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:radial-gradient(115% 150% at 50% 0%,rgba(11,33,28,0) 0%,rgba(11,33,28,.45) 42%,var(--ink-deep) 88%);
}
.site-header > *{position:relative;z-index:1;}

.header-rule{
  position:relative;
  height:3px;
  background:linear-gradient(90deg,var(--cyan) 0 120px,var(--line) 120px 100%);
}
.header-rule::after{
  content:"";
  position:absolute;
  left:120px;
  top:-1px;
  width:28px;
  height:5px;
  background:var(--orange);
  transform:skewX(-12deg);
}

.scroll-rail{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  z-index:6;
  pointer-events:none;
}
.scroll-rail::after{
  content:"";
  display:block;
  height:100%;
  width:var(--progress,0%);
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  transition:width .1s linear;
}

.masthead{
  max-width:var(--shell);
  margin:0 auto;
  padding:24px var(--gutter) 18px;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
}

.masthead__descriptor{
  justify-self:start;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--mist-hi);
  line-height:1.5;
}
.masthead__descriptor span{
  display:block;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--cyan);
}

.masthead__brand{
  justify-self:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:6px;
  text-decoration:none;
}
.masthead__brand-name{
  display:inline-block;
  font-size:clamp(24px,3.4vw,40px);
  font-weight:800;
  letter-spacing:-.03em;
  line-height:1;
  color:var(--bone);
  transform:skewX(-6deg);
  transition:color .12s var(--ease);
}
.masthead__brand:hover .masthead__brand-name{color:var(--cyan);}
.masthead__brand-line{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--mist-hi);
  white-space:nowrap;
}

.masthead__status{
  justify-self:end;
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 12px;
  border:1px solid var(--line);
  background:var(--glass);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--mist-hi);
  white-space:nowrap;
}
.status-dot{
  width:7px;
  height:7px;
  flex:0 0 auto;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(79,227,193,.18);
  transform:rotate(45deg);
}

.nav-bar{
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--gutter);
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  border-top:1px solid var(--line);
  min-height:54px;
}

.nav-bar__index{
  justify-self:start;
  display:flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--mist);
  text-transform:uppercase;
}
.nav-bar__index span{
  display:inline-block;
  padding:2px 6px;
  border:1px solid var(--line);
  background:var(--ink-panel);
  color:var(--cyan);
  letter-spacing:.08em;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  background:var(--ink-panel);
  border:1px solid var(--line);
  color:var(--bone);
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  cursor:pointer;
  transition:border-color .12s var(--ease),color .12s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan);}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:3px;}
.nav-toggle__bars i{
  display:block;
  width:16px;
  height:2px;
  background:currentColor;
  transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.site-header[data-open] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg);}
.site-header[data-open] .nav-toggle__bars i:nth-child(2){opacity:0;}
.site-header[data-open] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

.site-nav__list{
  display:flex;
  align-items:center;
  list-style:none;
  padding:0;
  margin:0;
}
.site-nav__item{position:relative;}
.site-nav__link{
  position:relative;
  display:block;
  padding:16px 14px;
  border:1px solid transparent;
  color:var(--mist-hi);
  font-size:15px;
  letter-spacing:.02em;
  text-decoration:none;
  transition:color .12s var(--ease),border-color .12s var(--ease);
}
.site-nav__link::before{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:8px;
  height:1px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s var(--ease);
}
.site-nav__link:hover{color:var(--bone);border-color:var(--line);}
.site-nav__link:hover::before{transform:scaleX(1);}
.site-nav__link[aria-current="page"]{color:var(--cyan);}
.site-nav__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:8px;
  height:2px;
  background:var(--cyan);
}

.nav-bar__utility{
  justify-self:end;
  display:flex;
  align-items:center;
  gap:6px;
}
.utility-link{
  padding:5px 10px;
  border:1px solid var(--line);
  color:var(--mist-hi);
  font-size:12px;
  letter-spacing:.06em;
  text-decoration:none;
  transition:border-color .12s var(--ease),color .12s var(--ease),background-color .12s var(--ease);
}
.utility-link:hover{
  border-color:var(--cyan);
  color:var(--cyan);
  background:var(--cyan-soft);
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:96px;
  background:var(--slate);
  border-top:1px solid var(--line);
  color:var(--bone);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(38,67,58,.42) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(38,67,58,.42) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.6;
}
.site-footer > *{position:relative;z-index:1;}

.footer-grid{
  max-width:var(--shell);
  margin:0 auto;
  padding:56px var(--gutter) 40px;
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr);
  gap:40px;
}

.footer-brand__mark{
  position:relative;
  padding-bottom:12px;
  margin-bottom:14px;
  font-size:22px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--bone);
  transform:skewX(-4deg);
}
.footer-brand__mark::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:44px;
  height:3px;
  background:var(--cyan);
  transform:skewX(-12deg);
}
.footer-brand__note{
  font-size:13px;
  color:var(--mist-hi);
  margin-bottom:14px;
}
.footer-brand__meta{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:var(--mist);
  letter-spacing:.02em;
}
.footer-stamp{
  display:inline-block;
  padding:2px 8px;
  border:1px solid var(--orange);
  color:var(--orange);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  white-space:nowrap;
}

.footer-col__title{
  padding-bottom:10px;
  margin-bottom:16px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-list{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap:10px;
}
.footer-list__link{
  display:inline-block;
  font-size:14px;
  color:var(--mist-hi);
  border-bottom:1px solid transparent;
  transition:color .12s var(--ease),border-color .12s var(--ease);
}
.footer-list__link:hover{
  color:var(--cyan);
  border-bottom-color:var(--cyan);
}

.footer-legacy{
  grid-column:1/-1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 28px;
  padding:22px 60px 22px 28px;
  background:var(--paper);
  color:var(--ink-deep);
  clip-path:polygon(0 0,100% 0,calc(100% - 32px) 100%,0 100%);
}
.footer-legacy__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:#5B6F68;
  white-space:nowrap;
}
.footer-legacy__text{
  flex:1 1 260px;
  font-size:13px;
  line-height:1.6;
  color:#3C4C46;
}
.footer-legacy__action{
  display:inline-block;
  padding:9px 18px;
  background:var(--ink-deep);
  color:var(--cyan);
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
  text-decoration:none;
  white-space:nowrap;
  transition:background-color .12s var(--ease),color .12s var(--ease);
}
.footer-legacy__action:hover{
  background:var(--ink-panel);
  color:var(--bone);
}

.footer-contact{
  max-width:var(--shell);
  margin:0 auto;
  padding:26px var(--gutter);
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:12px 32px;
}
.footer-contact__item{
  display:flex;
  align-items:baseline;
  gap:8px;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--bone);
  letter-spacing:.02em;
  word-break:break-word;
}
.footer-contact__label{
  flex:0 0 auto;
  padding-left:8px;
  border-left:2px solid var(--orange);
  font-family:var(--font-sans);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--mist);
}

.footer-legal{
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--gutter) 44px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 28px;
  font-size:12px;
  color:var(--mist);
}
.footer-legal__copy{
  font-family:var(--font-mono);
  letter-spacing:.04em;
}
.footer-legal__links{
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
}
.footer-legal__links a{
  color:var(--mist-hi);
  text-decoration:none;
  border-bottom:1px solid var(--line);
  padding-bottom:1px;
  transition:color .12s var(--ease),border-color .12s var(--ease);
}
.footer-legal__links a:hover{
  color:var(--cyan);
  border-bottom-color:var(--cyan);
}
.footer-legal__icp{
  margin-left:auto;
  font-family:var(--font-mono);
  letter-spacing:.04em;
}

/* ---------- shared primitives ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--gutter);
}

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

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:24px;
}

.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:12px 22px 12px 24px;
  border:1px solid var(--line);
  background:var(--ink-panel);
  color:var(--bone);
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  text-decoration:none;
  transition:border-color .12s var(--ease),background-color .12s var(--ease),color .12s var(--ease);
}
.btn::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:var(--line);
  transition:background-color .12s var(--ease);
}
.btn:hover{
  border-color:var(--cyan);
  background:rgba(79,227,193,.12);
  color:var(--bone);
}
.btn:hover::before{background:var(--cyan);}
.btn--primary{
  background:var(--cyan);
  border-color:var(--cyan);
  color:var(--ink-deep);
}
.btn--primary::before{background:var(--ink-deep);opacity:.4;}
.btn--primary:hover{
  background:var(--bone);
  border-color:var(--bone);
  color:var(--ink-deep);
}
.btn--ghost{background:transparent;}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding-bottom:6px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--mist);
}
.breadcrumb a{color:var(--mist-hi);text-decoration:none;transition:color .12s var(--ease);}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb__sep{color:var(--line);}

.prose{
  max-width:34em;
  font-size:16px;
  line-height:1.75;
  color:var(--bone);
}
.prose p + p{margin-top:1em;}
.prose h2{font-size:22px;margin:2em 0 .6em;}
.prose h3{font-size:18px;margin:1.6em 0 .5em;}
.prose ul,.prose ol{margin:1em 0;padding-left:1.4em;}
.prose li + li{margin-top:.4em;}
.prose a{
  color:var(--cyan);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
}

.panel{
  padding:24px;
  background:var(--ink-panel);
  border:1px solid var(--line);
}
.panel--glass{
  background:var(--glass);
  border:1px solid rgba(79,227,193,.28);
  box-shadow:0 18px 40px rgba(0,0,0,.32);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  transition:transform .16s var(--ease),box-shadow .16s var(--ease);
}
.panel--glass:hover{
  transform:translateY(-2px);
  box-shadow:0 24px 52px rgba(0,0,0,.44);
}

.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--ink-panel);
  border:1px solid var(--line);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(79,227,193,.14) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(79,227,193,.14) 1px,transparent 1px);
  background-size:32px 32px;
  mix-blend-mode:screen;
}
.media-frame__img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.85) contrast(1.05);
}
.media-frame__caption{
  position:absolute;
  left:0;
  bottom:0;
  z-index:2;
  padding:8px 14px;
  background:rgba(11,33,28,.86);
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist-hi);
}
.media-frame--wide{aspect-ratio:21/9;}
.media-frame--square{aspect-ratio:1/1;}
.media-frame--tall{aspect-ratio:3/4;}
.media-frame--cut{
  clip-path:polygon(0 0,100% 0,100% calc(100% - 32px),calc(100% - 32px) 100%,0 100%);
}

.tag{
  display:inline-block;
  padding:3px 9px;
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--mist-hi);
}
.tag--live{color:var(--cyan);border-color:rgba(79,227,193,.5);}
.tag--alert{color:var(--orange);border-color:rgba(255,138,61,.5);}

[data-reveal="pending"]{
  opacity:0;
  transform:translateY(8px);
}
[data-reveal="done"]{
  opacity:1;
  transform:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .masthead{
    grid-template-columns:1fr;
    justify-items:center;
    text-align:center;
    padding:20px 16px 16px;
    gap:12px;
  }
  .masthead__brand{order:-1;}
  .masthead__descriptor{justify-self:center;}
  .masthead__status{justify-self:center;}

  .nav-bar{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:0;
    padding:0 16px;
    min-height:0;
  }
  .nav-bar__index{display:none;}
  .nav-toggle{display:inline-flex;order:1;margin:8px 0;}
  .nav-bar__utility{order:2;}
  .site-nav{
    order:3;
    flex:0 0 100%;
    display:none;
    margin:0 -16px;
    padding:0 16px 14px;
    border-top:1px solid var(--line);
    background:var(--ink-deep);
  }
  .site-header[data-open] .site-nav{display:block;}
  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
  }
  .site-nav__item + .site-nav__item{border-top:1px solid var(--line);}
  .site-nav__link{padding:14px 6px 14px 12px;font-size:15px;}
  .site-nav__link::before{display:none;}
  .site-nav__link:hover{background:var(--ink-panel);}
  .site-nav__link[aria-current="page"]::after{
    left:4px;
    right:auto;
    top:10px;
    bottom:10px;
    width:3px;
    height:auto;
  }

  .footer-grid{
    grid-template-columns:1fr 1fr;
    padding:40px 16px 32px;
    gap:32px 24px;
  }
  .footer-brand{grid-column:1/-1;}
  .footer-legacy{
    padding:20px 24px;
    clip-path:none;
  }
  .footer-contact{padding:24px 16px;}
  .footer-legal{padding:0 16px 36px;}
  .footer-legal__icp{margin-left:0;}
}

@media (max-width:720px){
  :root{--gutter:16px;}
  .masthead__descriptor{font-size:11px;}
  .masthead__brand-line{letter-spacing:.18em;}
  .masthead__status{font-size:11px;padding:5px 10px;}
  .site-footer{margin-top:64px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-legacy{gap:8px 16px;}
  .footer-legacy__text{flex:1 1 100%;}
  .footer-contact{gap:10px 20px;}
  .footer-legal{font-size:11px;gap:10px 18px;}
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));gap:16px;}
}

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