/* ================= tokens & reset ================= */
:root{
    --bg:#0a0e13; --bg2:#0e141b; --panel:#121a23; --panel2:#161f2a;
    --line:#22303d; --line2:#1a2530;
    --text:#d9e4ee; --muted:#8b98a6; --faint:#5c6a77;
    --accent:#57a8dd; --accent-dim:#2e6d96; --accent-glow:rgba(87,168,221,.16);
    --ok:#3fd985; --warn:#e6a33c; --danger:#e0584a;
    --sans:'IBM Plex Sans',system-ui,-apple-system,sans-serif;
    --disp:'Space Grotesk',var(--sans);
    --mono:'IBM Plex Mono',ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
    --head-h:64px; --gutter:clamp(20px,5vw,64px);
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{background:var(--bg);color:var(--text);font:400 16px/1.65 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
  
  /* film-grain noise over everything */
  body::before{content:'';position:fixed;inset:0;pointer-events:none;z-index:2100;opacity:.045;mix-blend-mode:overlay;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E")}
  
  ::selection{background:var(--accent);color:#08131b}
  a{color:var(--accent);text-decoration:none}
  img{max-width:100%}
  .container{width:min(1240px,100% - 2*var(--gutter));margin-inline:auto}
  main{display:block}
  
  /* ============ local webfonts (fonts/) → Google CDN → local() TTF (font/) ============ */
  @font-face{font-family:'Space Grotesk';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/SpaceGrotesk-Medium.woff2') format('woff2')}
  @font-face{font-family:'Space Grotesk';font-style:normal;font-weight:700;font-display:swap;src:url('../fonts/SpaceGrotesk-Bold.woff2') format('woff2')}
  @font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/IBMPlexSans-Regular.woff2') format('woff2')}
  @font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/IBMPlexSans-Medium.woff2') format('woff2')}
  @font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:600;font-display:swap;src:url('../fonts/IBMPlexSans-SemiBold.woff2') format('woff2')}
  @font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/IBMPlexMono-Regular.woff2') format('woff2')}
  @font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/IBMPlexMono-Medium.woff2') format('woff2')}
  /* air-gapped fallbacks — resolve when the TTF masters in ../font/ are installed */
  @font-face{font-family:'Space Grotesk';src:local('Space Grotesk Bold'),local('SpaceGrotesk-Bold')}
  @font-face{font-family:'IBM Plex Sans';src:local('IBM Plex Sans'),local('PlexSans')}
  @font-face{font-family:'IBM Plex Mono';src:local('IBM Plex Mono'),local('PlexMono')}
  
  /* ================= shared type & motion ================= */
  h1,h2,h3,h4{font-family:var(--disp);font-weight:700;letter-spacing:-.015em;line-height:1.15}
  .kicker{font:500 12px/1.4 var(--mono);letter-spacing:.22em;text-transform:uppercase;color:var(--accent)}
  .kicker::before{content:'';display:inline-block;width:34px;height:1px;background:var(--accent);vertical-align:middle;margin-right:12px}
  .display{font-family:var(--disp)}
  .mono{font-family:var(--mono)}
  .dim{color:var(--faint)}
  
  /* line-mask reveal */
  .reveal{overflow:hidden}
  .reveal>span{display:inline-block;transform:translateY(115%);transition:transform .9s cubic-bezier(.19,.8,.22,1)}
  .reveal.in>span{transform:translateY(0)}
  /* soft rise */
  .fadeup{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s cubic-bezier(.19,.8,.22,1)}
  .fadeup.in{opacity:1;transform:none}
  /* slow zoom-and-pan for figures */
  .kb{overflow:hidden;border:1px solid var(--line);border-radius:8px;position:relative}
  .kb img{width:100%;display:block;transform:scale(1.02)}
  .kb.in img{animation:kb 18s ease-in-out infinite alternate}
  @keyframes kb{from{transform:scale(1.02) translate(0,0)}to{transform:scale(1.16) translate(-2.5%,2%)}}
  .kb figcaption{position:absolute;left:0;right:0;bottom:0;padding:28px 16px 12px;background:linear-gradient(transparent,rgba(4,7,10,.88));font:400 11px/1.5 var(--mono);color:var(--muted);letter-spacing:.08em}
  
  mark{background:var(--accent-glow);color:var(--accent);padding:0 2px;border-radius:2px}
  
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.001s!important;animation-iteration-count:1!important;transition-duration:.001s!important}
    html{scroll-behavior:auto}
  }