:root{
      --bg: #0c0f14; --text:#e7edf7; --muted:#98a5ba; --surface:#101520; --panel:#141b28;
      --border:#202838; --accent:#6ee7ff; --accent2:#a78bfa; --ring: rgba(110,231,255,.4);
      --shadow: 0 10px 30px rgba(0,0,0,.35);
    }
    @media (prefers-color-scheme: light){
      :root{ --bg:#f6f8fb; --text:#0b1120; --muted:#475569; --surface:#ffffff; --panel:#ffffff; --border:#e5e7eb; --accent:#0284c7; --accent2:#7c3aed; --ring: rgba(2,132,199,.2); --shadow:0 8px 24px rgba(2,6,23,.08);} }
    *,*::before,*::after{box-sizing:border-box}
    html,body{height:100%}
    body{margin:0;padding-top:64px;background:var(--bg);color:var(--text);font-family:'Inter',system-ui,Segoe UI,Roboto,Arial,sans-serif;line-height:1.6}
    a{color:var(--accent);text-decoration:none}
    a:hover{text-decoration:underline}
    .container{max-width:1180px;margin:0 auto;padding:0 20px}

    /* Skip link */
    .skip{position:absolute;left:-9999px;top:auto;overflow:hidden}
    .skip:focus{left:16px;top:16px;background:var(--panel);border:2px solid var(--accent);padding:8px 12px;border-radius:8px;z-index:10000}

    /* NAV */
    .nav{position:fixed;top:0;left:0;right:0;z-index:1100;background:rgba(255,255,255,0.78);backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid rgba(0,0,0,0.1)}
    .nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:700;color:#000;}
    .brand-dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(90deg,var(--accent),var(--accent2));box-shadow:0 0 0 4px var(--ring)}
    .links{display:flex;gap:18px;align-items:center}
    .links a{color:#000;opacity:.92;font-weight:500}
    .burger{display:none}
    @media (max-width:760px){.links{display:none}.burger{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);background:transparent;color:var(--muted);padding:6px 10px;border-radius:10px;}}

    /* HERO */
    .hero{position:relative;overflow:hidden;border-bottom:1px solid var(--border)}
    .hero-bg{position:absolute;inset:0;background:radial-gradient(1200px 600px at 20% -10%,rgba(110,231,255,.25),transparent 60%),radial-gradient(900px 500px at 85% 10%,rgba(167,139,250,.22),transparent 55%),linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,0));pointer-events:none}
    .hero-media{position:relative}
    /* .hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.42),rgba(0,0,0,.42));pointer-events:none} */
    .hero-media::after{content:"";position:absolute;inset:0;pointer-events:none;}
    .hero-media img{
      width:100%;
      height:54vh;
      object-fit:cover;
      filter: brightness(0.6) saturate(105%) contrast(98%);
      opacity:0.94;
    }
    .hero-content{
      position:absolute;
      inset:0;
      display:grid;
      place-items:center;
      transform: translateY(-6vh);
      /* The card sits over the image, no background overlay needed */
    }
    .hero-card{
      margin:24px;
      background: transparent;
      border: none;
      border-radius: 0;
      box-shadow: none;
      backdrop-filter: none;
      max-width: min(1020px,92%);
      padding:24px;
    }
    .hero-card h1,
    .hero-card .lead {
      text-shadow: 0 2px 6px rgba(0,0,0,0.6);
    }
    .hero-card h1{color:#ffffff;}
    .hero-card .lead{color:#eaf2ff;opacity:.98}
    .eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#d8e4f7}
    h1{font-size:clamp(26px,4vw,46px);line-height:1.15;margin:.2em 0}
    .lead{font-size:clamp(16px,2.2vw,19px);color:var(--muted)}
    .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}
    .btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-weight:600}
    .btn.primary{background:linear-gradient(90deg,var(--accent),var(--accent2));color:#081018;border:none}

    /* SECTIONS */
    main section{padding:56px 0}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:10px;margin-bottom:20px}
    .section-head h2{margin:0;font-size:26px}
    .kicker{color:var(--muted);font-size:14px}

    /* XR MODAL & DETAILS */
    details.more{margin-top:8px}
    details.more summary{cursor:pointer}
    dialog{border:1px solid var(--border);border-radius:12px;padding:20px;background:var(--surface);color:var(--text);max-width:720px;box-shadow:var(--shadow)}
    dialog::backdrop{background:rgba(0,0,0,.5)}

    /* GRIDS */
    .grid{display:grid;gap:18px}
    .grid.cols-3{grid-template-columns:repeat(3,1fr)}
    .grid.cols-2{grid-template-columns:repeat(2,1fr)}
    @media (max-width:980px){.grid.cols-3{grid-template-columns:repeat(2,1fr)}}
    @media (max-width:720px){.grid.cols-3,.grid.cols-2{grid-template-columns:1fr}}
    .card{background:var(--panel);border:1px solid var(--border);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);transition:transform .2s ease}
    .card:hover{transform:translateY(-3px)}
    .card img{width:100%;aspect-ratio:16/9;object-fit:cover}
    .card-body{padding:14px}
    .card h3{margin:0 0 6px;font-size:18px}
    .meta{color:var(--muted);font-size:12px}
    .tag{display:inline-block;margin-right:6px;margin-bottom:6px;padding:4px 8px;border:1px solid var(--border);border-radius:999px;color:var(--muted);font-size:12px}

    /* FILTER TABS */
    .filters{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 18px}
    .chip{border:1px solid var(--border);background:transparent;color:var(--muted);padding:6px 10px;border-radius:999px;cursor:pointer}
    .chip[aria-pressed="true"]{background:var(--surface);color:var(--text);box-shadow:0 0 0 3px var(--ring)}

    /* TIMELINE */
    .timeline{position:relative;margin-left:6px}
    .timeline::before{content:"";position:absolute;left:10px;top:0;bottom:0;width:2px;background:var(--border)}
    .t-item{position:relative;margin-left:28px;padding:10px 0}
    .t-item::before{content:"";position:absolute;left:-18px;top:12px;width:10px;height:10px;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:50%;box-shadow:0 0 0 3px var(--bg)}
    .t-title{font-weight:600}

    /* FOOTER */
    footer{border-top:1px solid var(--border);padding:32px 0;color:var(--muted)}
    .foot{display:grid;gap:16px;grid-template-columns:1fr auto;align-items:center}
    @media (max-width:720px){.foot{grid-template-columns:1fr}}

    @media (max-width:720px){
      .hero-content{ transform: translateY(-3vh); }
    }

    /* Motion reduction */
    @media (prefers-reduced-motion: reduce){
      .card,.hero-card{transition:none}
      .hero-content{display:block}
    }

    /* Smooth scrolling (respect reduced motion) */
    @media (prefers-reduced-motion: no-preference){
      html { scroll-behavior: smooth; }
    }
    /* Prevent headings from hiding under sticky nav */
    section { scroll-margin-top: 76px; }