*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img,svg,video{display:block;max-width:100%}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
address{font-style:normal}
table{border-collapse:collapse;width:100%}

:root{
  --ink-900:#07131F;
  --ink-800:#0D2233;
  --ink-700:#163244;
  --line:#274455;
  --paper:#F4F8FA;
  --muted:#A9BAC6;
  --signal:#FF6A2A;
  --cyan:#2DF2D0;
  --old:#B9AEA3;
  --new:#7DF9E8;
  --violet:#8B7CFF;

  --font-display:"Barlow Condensed","Archivo Narrow","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Source Han Sans SC","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;

  --max:1240px;
  --gutter:clamp(18px,4vw,48px);
  --radius:2px;
  --ease:cubic-bezier(.4,.05,.2,1);

  --step-display:clamp(56px,11vw,148px);
  --step-h2:clamp(32px,5vw,64px);
  --step-h3:clamp(22px,2.4vw,30px);
  --step-body:17px;
}

body{
  font-family:var(--font-body);
  font-size:var(--step-body);
  line-height:1.78;
  color:var(--paper);
  overflow-x:hidden;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1100px 560px at 88% -8%,rgba(45,242,208,.07),transparent 62%),
    radial-gradient(900px 520px at -6% 4%,rgba(139,124,255,.06),transparent 58%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

#main-content,#main-content:target{scroll-margin-top:132px}
:target{scroll-margin-top:132px}

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

/* —— layout —— */
.container{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(44px,6.5vw,92px)}
.page-head{padding-block:clamp(30px,5vw,68px) clamp(20px,3.4vw,44px)}
.grid{display:grid;gap:clamp(16px,2.4vw,32px)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

/* —— type —— */
h1,h2,h3{font-family:var(--font-display);font-weight:800;line-height:1.08;letter-spacing:.01em}
.display{font-family:var(--font-display);font-weight:800;font-size:var(--step-display);line-height:.92;letter-spacing:-.01em}
.section-title{font-family:var(--font-display);font-weight:800;font-size:var(--step-h2);line-height:1.02;letter-spacing:.005em}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);flex:none}
.lede{font-size:clamp(17px,1.4vw,20px);line-height:1.8;max-width:52ch}
.text-muted{color:var(--muted)}
.prose{max-width:66ch}
.prose p+p{margin-top:1.05em}
.prose h3{font-size:var(--step-h3);margin-block:1.4em .5em}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(45,242,208,.4)}

/* —— buttons & links —— */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 22px;border:1px solid transparent;border-radius:var(--radius);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.1em;line-height:1;
  text-align:center;
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.btn--sm{padding:9px 15px;font-size:12px}
.btn--signal{background:var(--signal);color:#0A1520;font-weight:700}
.btn--signal:hover{background:#FF8A54}
.btn--signal:active{transform:translateY(1px)}
.btn--ghost{border-color:var(--line);background:rgba(22,50,68,.5);color:var(--paper)}
.btn--ghost:hover{border-color:var(--cyan);background:rgba(22,50,68,.9);color:var(--new)}
.link-underline{color:var(--cyan);border-bottom:1px solid rgba(45,242,208,.4);transition:color .18s var(--ease),border-color .18s var(--ease)}
.link-underline:hover{color:var(--new);border-bottom-color:var(--new)}

/* —— tags —— */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;border-radius:var(--radius);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  border:1px solid var(--line);color:var(--muted);
}
.tag--cyan{color:var(--cyan);border-color:rgba(45,242,208,.45);background:rgba(45,242,208,.1)}
.tag--signal{color:var(--signal);border-color:rgba(255,106,42,.45);background:rgba(255,106,42,.1)}
.tag--old{color:var(--old);border-color:rgba(185,174,163,.45);background:rgba(185,174,163,.1)}
.tag--new{color:var(--new);border-color:rgba(125,249,232,.45);background:rgba(125,249,232,.12)}

/* —— surfaces —— */
.panel{
  padding:clamp(18px,2.4vw,28px);
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(22,50,68,.55);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.card{
  padding:clamp(18px,2.2vw,26px);
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--ink-800);
  transition:border-color .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover,.card:focus-visible{
  border-color:rgba(45,242,208,.45);
  box-shadow:0 0 0 1px rgba(45,242,208,.12),0 18px 40px -28px rgba(0,0,0,.9);
}

/* —— media —— */
.media{
  position:relative;overflow:hidden;aspect-ratio:16/9;
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(135deg,var(--ink-700),var(--ink-800) 72%);
}
.media img{width:100%;height:100%;object-fit:cover}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 14px;
  background:linear-gradient(180deg,transparent,rgba(7,19,31,.9));
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--muted);
}
.media--wide{aspect-ratio:21/9}
.media--4x3{aspect-ratio:4/3}
.media--portrait{aspect-ratio:3/4}
.media--signal{
  background-image:
    repeating-linear-gradient(90deg,rgba(45,242,208,.12) 0 1px,transparent 1px 18px),
    repeating-linear-gradient(0deg,rgba(255,106,42,.07) 0 1px,transparent 1px 26px),
    linear-gradient(135deg,var(--ink-700),var(--ink-800) 72%);
}

/* —— breadcrumbs —— */
.crumbs{padding-block:18px 0}
.crumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted)}
.crumbs__list li{display:flex;align-items:center;gap:8px}
.crumbs__list li+li::before{content:"/";color:var(--line)}
.crumbs__list a{color:var(--muted);transition:color .18s var(--ease)}
.crumbs__list a:hover{color:var(--cyan)}
.crumbs__list [aria-current="page"]{color:var(--paper)}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(7,19,31,.9);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
}
.header-inner{max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}
.header-top{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding-block:8px;
  border-bottom:1px solid rgba(39,68,85,.55);
}
.header-kicker{
  display:flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--muted);
}
.header-kicker::before{
  content:"";flex:none;width:7px;height:7px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(45,242,208,.14),0 0 14px rgba(45,242,208,.75);
}
.header-masthead{
  position:relative;
  display:flex;flex-direction:column;align-items:center;
  padding-block:10px 6px;text-align:center;
}
.brand{
  display:inline-flex;align-items:baseline;gap:.14em;
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(24px,3.2vw,34px);line-height:1;letter-spacing:.06em;
  color:var(--paper);
  transition:color .2s var(--ease);
}
.brand__name{color:inherit}
.brand__suffix{font-size:.6em;letter-spacing:.14em;color:var(--cyan);transition:color .2s var(--ease)}
.brand:hover .brand__suffix{color:var(--new)}
.brand__line{
  margin:6px 0 0;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--muted);
}
.nav-toggle{
  display:none;position:absolute;top:50%;right:0;transform:translateY(-50%);
  align-items:center;gap:9px;
  padding:9px 12px;
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(22,50,68,.72);
  color:var(--paper);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:10px;flex:none}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--cyan);
  transition:top .2s var(--ease),bottom .2s var(--ease),transform .2s var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:4px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{bottom:4px;transform:rotate(-45deg)}
.nav-toggle__label{white-space:nowrap}

.site-nav{display:block}
.site-nav__list{display:flex;align-items:center;justify-content:center;gap:clamp(4px,1.4vw,22px)}
.site-nav__link{
  position:relative;display:inline-block;
  padding:10px 8px 12px;
  font-size:15px;font-weight:500;letter-spacing:.05em;
  color:var(--muted);
  transition:color .18s var(--ease);
}
.site-nav__link::after{
  content:"";position:absolute;left:8px;right:8px;bottom:6px;height:2px;
  background:var(--violet);transform:scaleX(0);transform-origin:left center;
  transition:transform .2s var(--ease),background-color .2s var(--ease);
}
.site-nav__link:hover{color:var(--paper)}
.site-nav__link:hover::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:var(--paper)}
.site-nav__link[aria-current="page"]::after{
  transform:scaleX(1);background:var(--cyan);
  box-shadow:0 0 10px rgba(45,242,208,.65);
}
.scroll-progress{
  position:absolute;left:0;bottom:0;width:0;height:2px;
  background:linear-gradient(90deg,var(--signal),var(--cyan));
  transition:width .12s linear;
  pointer-events:none;
}
.skip-link{
  position:absolute;left:12px;top:-72px;z-index:200;
  padding:10px 16px;border-radius:var(--radius);
  background:var(--signal);color:#0A1520;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;font-weight:700;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:10px}

/* ============ FOOTER ============ */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,120px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(13,34,51,.55),rgba(5,13,22,.98) 58%);
  color:var(--muted);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--cyan) 22%,var(--signal) 62%,transparent);
  opacity:.55;
}
.footer-inner{
  max-width:var(--max);margin-inline:auto;
  padding:clamp(36px,5vw,64px) var(--gutter) clamp(26px,4vw,46px);
  display:grid;grid-template-columns:1.35fr .9fr 1fr;gap:clamp(24px,4vw,56px);
}
.footer-lede{display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.brand--footer{font-size:clamp(25px,3vw,32px)}
.footer-lede__text{max-width:34ch;font-size:15px;line-height:1.8;color:var(--muted)}
.footer-title{
  margin:0 0 14px;padding-bottom:10px;
  border-bottom:1px solid rgba(39,68,85,.8);
  font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.24em;
  text-transform:uppercase;color:var(--muted);
}
.footer-nav{min-width:0}
.footer-nav__list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2px 18px}
.footer-link{
  display:inline-block;padding:5px 0;
  font-size:15px;color:var(--paper);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-link:hover{color:var(--cyan);transform:translateX(3px)}
.footer-contact{display:flex;flex-direction:column;align-items:flex-start;min-width:0}
.footer-contact__hours{
  margin-bottom:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--cyan);
}
.footer-contact__address{margin-top:14px;max-width:26ch;font-size:14px;line-height:1.75;color:var(--muted)}
.copy-chip{
  display:flex;align-items:center;gap:10px;
  width:100%;max-width:320px;margin-block:5px;
  padding:9px 12px;
  border:1px solid rgba(39,68,85,.9);border-radius:var(--radius);
  background:rgba(22,50,68,.45);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.02em;color:var(--paper);
  text-align:left;
  transition:background-color .18s var(--ease),border-color .18s var(--ease);
}
.copy-chip:hover{background:rgba(22,50,68,.85);border-color:rgba(45,242,208,.5)}
.copy-chip__text{min-width:0;overflow-wrap:anywhere}
.copy-chip__hint{margin-left:auto;flex:none;font-size:11px;letter-spacing:.1em;color:var(--muted);transition:color .18s var(--ease)}
.copy-chip[data-copied="true"]{border-color:var(--cyan);background:rgba(45,242,208,.1)}
.copy-chip[data-copied="true"] .copy-chip__hint{color:var(--cyan)}
.footer-base{
  max-width:var(--max);margin-inline:auto;
  padding:16px var(--gutter) 28px;
  border-top:1px solid rgba(39,68,85,.7);
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--muted);
}
.footer-base__item{margin:0}
.footer-base__item--end{margin-left:auto;color:rgba(169,186,198,.7)}

@keyframes nav-drop{
  from{opacity:0;transform:translateY(-6px)}
  to{opacity:1;transform:translateY(0)}
}

@media (max-width:1024px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .footer-inner{grid-template-columns:1fr 1fr}
  .footer-lede{grid-column:1 / -1}
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
}
@media (max-width:860px){
  .nav-toggle{display:inline-flex}
  .header-kicker{font-size:10px;letter-spacing:.12em}
  .header-masthead{padding-block:9px 6px}
  .brand__line{font-size:10px;letter-spacing:.18em}
  .site-nav{
    display:none;margin-top:10px;padding-bottom:10px;
    border-top:1px solid var(--line);
  }
  .site-nav[data-open="true"]{display:block;animation:nav-drop .22s var(--ease) both}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__link{display:block;padding:13px 12px;font-size:16px;border-bottom:1px solid rgba(39,68,85,.6)}
  .site-nav__link::after{display:none}
  .site-nav__list li:last-child .site-nav__link{border-bottom:0}
  .site-nav__link[aria-current="page"]{color:var(--cyan);box-shadow:inset 3px 0 0 var(--cyan)}
}
@media (max-width:640px){
  .grid--12{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--2{grid-template-columns:1fr}
  .grid--3{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .footer-nav__list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-base__item--end{margin-left:0}
  .btn{padding:12px 18px;font-size:12px}
  .btn--sm{padding:8px 12px;font-size:11px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}