:root{
  --ink:#061A15;
  --panel:#0B2A22;
  --grid:#1C4A3D;
  --cyan:#00F0C8;
  --teal:#2EC9B0;
  --orange:#FF6B2E;
  --paper:#F3F7F4;
  --mist:#9BB7AD;
  --glass:#B9FFF1;
  --base:#020806;

  --grid-line:rgba(28,74,61,.38);
  --glass-fill:rgba(185,255,241,.08);
  --glass-edge:rgba(185,255,241,.18);

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

  --w-max:1240px;
  --pad:16px;
  --gap:24px;
  --radius:2px;
  --t-fast:180ms;
  --t-mid:240ms;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  color:var(--paper);
  background-color:var(--base);
  background-image:
    radial-gradient(900px 520px at 78% -8%, rgba(0,240,200,.10), transparent 70%),
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size:auto, 64px 64px, 64px 64px;
  background-position:center top, 0 0, 0 0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;line-height:1.25}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--teal);text-decoration:none}
a:hover{color:var(--cyan)}
button{font:inherit;color:inherit}
img,svg{max-width:100%}
table{border-collapse:collapse;width:100%}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.mono{font-family:var(--font-mono);letter-spacing:.02em;font-variant-numeric:tabular-nums}

.skip-link{
  position:absolute;left:16px;top:-64px;z-index:200;
  padding:10px 16px;background:var(--cyan);color:var(--base);
  font-size:13px;font-weight:700;letter-spacing:.08em;border-radius:var(--radius);
  transition:top var(--t-fast) ease;
}
.skip-link:focus{top:12px;color:var(--base)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,26,21,.9);
  border-bottom:1px solid var(--grid);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
@supports not ((-webkit-backdrop-filter:blur(1px)) or (backdrop-filter:blur(1px))){
  .site-header{background:rgba(6,26,21,.98)}
}
.header-frame{
  max-width:var(--w-max);margin:0 auto;padding:0 var(--pad);
}
.header-top{
  position:relative;
  display:flex;align-items:center;gap:16px;
  min-height:66px;
}
.brand{
  display:inline-flex;align-items:center;gap:12px;
  color:var(--paper);text-decoration:none;
}
.brand:hover{color:var(--paper)}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;flex:0 0 38px;
  border:1px solid var(--cyan);
  background:rgba(0,240,200,.07);
  color:var(--cyan);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{
  font-family:var(--font-display);
  font-size:19px;font-weight:700;letter-spacing:.09em;
}
.brand-desc{
  font-size:11px;letter-spacing:.2em;color:var(--mist);
  text-transform:uppercase;
}
.frame-status{
  display:flex;align-items:center;gap:8px;
  margin:0 0 0 auto;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--mist);text-transform:uppercase;
}
.status-dot{
  width:6px;height:6px;flex:0 0 6px;background:var(--cyan);
  box-shadow:0 0 0 3px rgba(0,240,200,.16);
  animation:lm-pulse 2.6s ease-in-out infinite;
}
.status-label{color:var(--paper)}
.status-sep{color:var(--grid)}
.status-mono{color:var(--cyan)}
@keyframes lm-pulse{0%,100%{opacity:1}50%{opacity:.35}}

.nav-toggle{
  display:none;align-items:center;gap:8px;
  min-height:40px;padding:8px 12px;
  background:transparent;border:1px solid var(--grid);
  color:var(--paper);cursor:pointer;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle-bar{
  display:block;width:14px;height:1px;background:currentColor;
  transition:transform var(--t-fast) ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-of-type{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-of-type(2){transform:translateY(-3px) rotate(-45deg)}
.nav-toggle-label{line-height:1}

.primary-nav{
  display:flex;align-items:center;gap:20px;
  border-top:1px solid var(--grid);
}
.nav-list{display:flex;flex-wrap:wrap;align-items:center;gap:2px;flex:1 1 auto}
.nav-item{display:block}
.nav-link{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:12px 14px 11px;
  color:var(--mist);
  font-size:14px;font-weight:500;letter-spacing:.02em;
  border-bottom:2px solid transparent;
  transition:color var(--t-fast) ease,border-color var(--t-mid) ease,background var(--t-fast) ease;
}
.nav-index{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;
  color:var(--grid);transition:color var(--t-fast) ease;
}
.nav-link:hover{color:var(--paper);background:rgba(185,255,241,.05)}
.nav-link:hover .nav-index{color:var(--teal)}
.nav-link[aria-current="page"]{color:var(--paper);border-bottom-color:var(--cyan)}
.nav-link[aria-current="page"] .nav-index{color:var(--cyan)}
.nav-cta{
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  margin:8px 0;
  padding:8px 16px;
  border:1px solid var(--cyan);
  color:var(--cyan);
  font-size:13px;font-weight:500;letter-spacing:.06em;
  background:rgba(0,240,200,.06);
  transition:background var(--t-fast) ease,color var(--t-fast) ease;
}
.nav-cta:hover{background:var(--cyan);color:var(--base)}

.scroll-progress{
  height:2px;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--teal),var(--orange));
  transition:transform 90ms linear;
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:72px;
  background:var(--base);
  border-top:1px solid var(--grid);
  color:var(--paper);
}
.footer-frame{
  max-width:var(--w-max);margin:0 auto;
  padding:48px var(--pad) 32px;
}
.footer-masthead{
  display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:24px;
  padding-bottom:28px;border-bottom:1px solid var(--grid);
}
.footer-brand-block{max-width:62ch}
.footer-brand{
  margin:0 0 8px;
  font-family:var(--font-display);
  font-size:clamp(24px,3vw,34px);
  font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--paper);
}
.footer-summary{
  margin:0;color:var(--mist);font-size:14px;line-height:1.8;
}
.footer-grid{
  display:grid;grid-template-columns:1.1fr 1.1fr 1.4fr;gap:32px;
  padding:32px 0;
  border-bottom:1px solid var(--grid);
}
.footer-col{min-width:0}
.footer-heading{
  margin:0 0 14px;
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--cyan);
}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links a{
  display:inline-block;
  color:var(--mist);font-size:14px;
  border-bottom:1px solid transparent;
  transition:color var(--t-fast) ease,border-color var(--t-fast) ease;
}
.footer-links a:hover{color:var(--paper);border-bottom-color:var(--cyan)}
.footer-contact{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin:0 0 10px;font-size:13px;color:var(--mist);
}
.contact-line{min-width:0;overflow-wrap:anywhere}
.contact-line .mono{color:var(--paper);font-size:12.5px}
.copy-btn{
  flex:0 0 auto;
  padding:3px 10px;
  background:transparent;border:1px solid var(--grid);
  color:var(--mist);cursor:pointer;
  font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  transition:border-color var(--t-fast) ease,color var(--t-fast) ease;
}
.copy-btn:hover{border-color:var(--cyan);color:var(--cyan)}
.copy-btn[data-copied]{border-color:var(--cyan);color:var(--cyan)}
.footer-address{
  margin:14px 0 0;font-size:13px;color:var(--mist);
  padding-top:12px;border-top:1px dashed var(--grid);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:22px;
}
.footer-meta{margin:0;font-size:12.5px;letter-spacing:.04em;color:var(--mist)}
.footer-year{color:var(--paper)}
.footer-meta .mono{color:var(--mist);font-size:12px}
.footer-note{
  margin:0;max-width:52ch;font-size:12px;line-height:1.7;color:var(--grid);
  color:rgba(155,183,173,.78);
}

/* ---------- layout helpers ---------- */
.wrap{max-width:var(--w-max);margin:0 auto;padding:0 var(--pad)}
.section{padding:56px 0}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:28px;
  padding-bottom:14px;border-bottom:1px solid var(--grid);
}
.eyebrow{
  display:block;margin:0 0 8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--cyan);
}
.section-title{
  font-family:var(--font-display);
  font-size:clamp(26px,3vw,40px);font-weight:700;letter-spacing:.04em;
  color:var(--paper);
}
.lede{max-width:64ch;color:var(--mist);font-size:16px;line-height:1.85}
.lede:last-child{margin-bottom:0}

.layout-with-rail{
  display:grid;grid-template-columns:224px minmax(0,1fr);gap:32px;
  align-items:start;
}
.rail{min-width:0}
.rail-sticky{position:sticky;top:112px}

/* ---------- breadcrumb ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:0 0 24px;padding:0;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--mist);
}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li + li::before{content:"/";color:var(--grid)}
.crumbs a{color:var(--mist);border-bottom:1px solid transparent}
.crumbs a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.crumbs [aria-current="page"]{color:var(--paper)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;
  border:1px solid transparent;border-radius:var(--radius);
  font-size:14px;font-weight:500;letter-spacing:.06em;
  text-decoration:none;cursor:pointer;
  transition:background var(--t-fast) ease,color var(--t-fast) ease,border-color var(--t-fast) ease;
}
.btn-primary{background:var(--cyan);color:var(--base);border-color:var(--cyan)}
.btn-primary:hover{background:var(--teal);border-color:var(--teal);color:var(--base)}
.btn-ghost{background:transparent;color:var(--cyan);border-color:var(--cyan)}
.btn-ghost:hover{background:rgba(0,240,200,.12);color:var(--cyan)}
.btn-sm{padding:7px 14px;font-size:12.5px;letter-spacing:.08em}

/* ---------- chips / tags ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;
  background:transparent;border:1px solid var(--grid);
  color:var(--mist);cursor:pointer;
  font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  transition:color var(--t-fast) ease,border-color var(--t-fast) ease,background var(--t-fast) ease;
}
.chip:hover{color:var(--paper);border-color:var(--teal)}
.chip[aria-pressed="true"]{
  color:var(--base);background:var(--cyan);border-color:var(--cyan);
}
.tag{
  display:inline-block;
  padding:2px 8px;
  border:1px solid var(--grid);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--mist);
}
.tag--alert{color:var(--orange);border-color:rgba(255,107,46,.5)}

/* ---------- cards / glass ---------- */
.card{
  background:var(--panel);
  border:1px solid var(--grid);
  padding:20px;
  min-width:0;
}
.card-head{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;
  gap:8px;margin-bottom:10px;
}
.card-title{
  font-family:var(--font-display);font-size:20px;font-weight:700;
  letter-spacing:.04em;color:var(--paper);
}
.card-meta{
  margin:0;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--mist);
}
.glass{
  background:var(--glass-fill);
  border:1px solid var(--glass-edge);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  padding:20px;
}

/* ---------- media frames ---------- */
.media-frame{
  position:relative;display:block;overflow:hidden;
  width:100%;aspect-ratio:16/9;
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
    var(--panel);
  background-size:32px 32px, 32px 32px, auto;
  border:1px solid var(--grid);
}
.media-frame img{
  display:block;width:100%;height:100%;object-fit:cover;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:3/4}
.media-tag{
  position:absolute;left:12px;bottom:12px;
  padding:4px 10px;
  background:rgba(2,8,6,.78);
  border:1px solid var(--glass-edge);
  color:var(--cyan);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;
  text-transform:uppercase;
}

/* ---------- tabs ---------- */
.tab-list{
  display:flex;flex-wrap:wrap;gap:2px;
  border-bottom:1px solid var(--grid);
}
.tab-btn{
  appearance:none;background:transparent;border:0;
  border-bottom:2px solid transparent;
  padding:10px 16px;
  color:var(--mist);cursor:pointer;
  font-size:14px;letter-spacing:.06em;
  transition:color var(--t-fast) ease,border-color var(--t-mid) ease;
}
.tab-btn:hover{color:var(--paper)}
.tab-btn[aria-selected="true"]{color:var(--cyan);border-bottom-color:var(--cyan)}
.tab-panel{padding-top:20px}
.tab-panel[hidden]{display:none}

/* ---------- reveal ---------- */
[data-reveal]{
  opacity:0;transform:translateY(12px);
  transition:opacity 420ms ease,transform 420ms ease;
}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .layout-with-rail{grid-template-columns:minmax(0,1fr);gap:24px}
  .rail-sticky{position:static;top:auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-col-contact{grid-column:1 / -1}
}

@media (max-width:860px){
  .nav-toggle{display:inline-flex}
  .frame-status{display:none}
  .brand-desc{display:none}
  .primary-nav{
    display:none;
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    padding:8px var(--pad) 20px;
    background:rgba(6,26,21,.98);
    border-top:1px solid var(--grid);
    border-bottom:1px solid var(--cyan);
    box-shadow:0 24px 40px rgba(2,8,6,.6);
  }
  .primary-nav[data-open]{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{
    width:100%;
    padding:14px 2px;
    font-size:15px;
    border-bottom:1px solid var(--grid);
  }
  .nav-link[aria-current="page"]{
    border-bottom-color:var(--grid);
    box-shadow:inset 3px 0 0 var(--cyan);
    padding-left:12px;
  }
  .nav-cta{margin:16px 0 0;justify-content:center;padding:12px 16px}
  .header-top{min-height:60px}
  .section{padding:40px 0}
  .site-footer{margin-top:48px}
  .footer-frame{padding:36px var(--pad) 28px}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:26px 0}
  .footer-col-contact{grid-column:auto}
}

@media (max-width:560px){
  :root{--pad:12px}
  body{font-size:15.5px}
  .brand-name{font-size:17px;letter-spacing:.06em}
  .brand-mark{width:34px;height:34px;flex-basis:34px;font-size:12px}
  .footer-masthead{flex-direction:column;align-items:flex-start}
  .footer-bottom{flex-direction:column}
  .card{padding:16px}
  .glass{padding:16px}
}

@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}
  .scroll-progress{transition:none}
}