:root{
  --primary:#206bc4; --primary-d:#1b5aa6; --primary-soft:rgba(32,107,196,.12);
  --bg:#f4f6fa; --surface:#ffffff; --surface-2:#f7f9fc; --surface-hover:#f1f5fa;
  --border:#e6e9ef; --border-2:#eef1f6;
  --text:#172033; --text-2:#586375; --text-muted:#8a96a8;
  --radius:10px; --radius-sm:7px;
  --shadow:0 1px 2px rgba(15,23,42,.04), 0 1px 3px rgba(15,23,42,.06);
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;text-wrap:pretty;}
a{text-decoration:none;color:inherit;}
button{font-family:inherit;cursor:pointer;}
img{max-width:100%;display:block;}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.85);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);}
.header-inner{max-width:1140px;margin:0 auto;height:66px;padding:0 24px;display:flex;align-items:center;gap:14px;}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--primary);color:#fff;display:grid;place-items:center;flex-shrink:0;box-shadow:0 3px 8px var(--primary-soft);}
.brand-name{font-size:18px;font-weight:700;letter-spacing:-.02em;}
.brand-name b{color:var(--primary);}
.header-spacer{flex:1;}
.header-cta{display:flex;gap:10px;}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-sm);
  font-weight:600;border:1px solid transparent;transition:.13s;white-space:nowrap;}
.btn-lg{height:48px;padding:0 24px;font-size:15px;}
.btn-md{height:40px;padding:0 18px;font-size:13.5px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 1px 2px var(--primary-soft);}
.btn-primary:hover{background:var(--primary-d);}
.btn-soft{background:var(--surface-2);color:var(--text);border-color:var(--border);}
.btn-soft:hover{background:var(--surface-hover);}

/* ===== Hero ===== */
.hero{max-width:1140px;margin:0 auto;padding:88px 24px 64px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:22px;}
.hero-eyebrow{font-size:12px;font-weight:700;letter-spacing:.09em;color:var(--primary-d);text-transform:uppercase;}
.hero-title{font-size:52px;font-weight:800;letter-spacing:-.035em;line-height:1.08;margin:0;max-width:760px;}
.hero-title span{color:var(--primary);}
.hero-sub{font-size:17px;line-height:1.6;color:var(--text-2);max-width:560px;margin:0;}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-top:6px;}
.hero-credentials{font-size:13.5px;color:var(--text-muted);margin:0;}
.hero-credentials code{background:var(--surface-2);border:1px solid var(--border);border-radius:5px;padding:1px 6px;font-size:12.5px;color:var(--text-2);}

/* ===== Hero screenshot frame ===== */
.hero-frame{width:100%;max-width:980px;margin:36px auto 0;border-radius:16px;overflow:hidden;
  border:1px solid var(--border);box-shadow:0 24px 60px -20px rgba(15,23,42,.22);background:var(--surface);}
.ph{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--surface-2),var(--border-2));display:flex;align-items:center;justify-content:center;
  color:var(--text-muted);font-size:13px;font-weight:600;letter-spacing:.02em;}
.hero-frame .ph{aspect-ratio:16/9.4;background:var(--surface);}
/* Replaceable screenshot: drop a file at the img's `src` path and it renders automatically,
   covering the placeholder label. Until then, the 404 triggers onerror, which removes the
   img and leaves the placeholder label visible underneath. */
.ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;}

/* ===== Zoomable screenshots (hero + carousel) ===== */
.zoomable{cursor:pointer;}
.zoom-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:rgba(15,23,42,0);opacity:0;transition:.15s;}
.zoomable:hover .zoom-overlay{opacity:1;background:rgba(15,23,42,.25);}
.zoom-overlay svg{color:#fff;filter:drop-shadow(0 2px 6px rgba(0,0,0,.4));}

/* ===== Section shell ===== */
section{max-width:1140px;margin:0 auto;padding:64px 24px;}
.section-head{text-align:center;max-width:620px;margin:0 auto 40px;display:flex;flex-direction:column;gap:10px;}
.section-eyebrow{font-size:11.5px;font-weight:700;letter-spacing:.08em;color:var(--text-muted);text-transform:uppercase;}
.section-title{font-size:32px;font-weight:800;letter-spacing:-.03em;margin:0;}
.section-sub{font-size:15px;color:var(--text-2);line-height:1.6;margin:0;}

/* ===== Video ===== */
.video-wrap{max-width:840px;margin:0 auto;border-radius:16px;overflow:hidden;border:1px solid var(--border);
  box-shadow:var(--shadow);background:var(--surface);}
.video-frame{position:relative;aspect-ratio:16/9;background:#0e1620;}
.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}
.video-placeholder{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:#fff;}
.play-btn{width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.14);display:grid;place-items:center;border:1.5px solid rgba(255,255,255,.35);}
.video-placeholder p{margin:0;font-size:13px;color:rgba(255,255,255,.65);font-weight:500;}

/* ===== Carousel ===== */
.carousel{position:relative;}
.carousel-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 16px;
  scrollbar-width:none;}
.carousel-track::-webkit-scrollbar{display:none;}
.carousel-slide{flex:0 0 auto;width:min(560px,82vw);scroll-snap-align:center;}
.shot-card{border-radius:14px;overflow:hidden;border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow);}
.shot-card .ph{aspect-ratio:16/10;background:var(--surface);}
.shot-caption{padding:14px 18px;border-top:1px solid var(--border-2);}
.shot-caption b{font-size:13.5px;font-weight:700;display:block;}
.shot-caption span{font-size:12.5px;color:var(--text-muted);}
.carousel-arrows{display:flex;gap:8px;justify-content:center;margin-top:18px;}
.arrow-btn{width:38px;height:38px;border-radius:50%;border:1px solid var(--border);background:var(--surface);
  display:grid;place-items:center;color:var(--text-2);transition:.13s;}
.arrow-btn:hover{background:var(--surface-hover);color:var(--text);}

/* ===== Capability grid (placeholder) ===== */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.cap-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;
  display:flex;flex-direction:column;gap:10px;box-shadow:var(--shadow);}
.cap-icon{width:38px;height:38px;border-radius:10px;background:var(--primary-soft);color:var(--primary-d);display:grid;place-items:center;}
.cap-card h3{font-size:15px;font-weight:700;margin:0;letter-spacing:-.01em;}
.cap-card p{font-size:13px;color:var(--text-2);line-height:1.55;margin:0;}

/* ===== CTA band ===== */
.cta-band{background:linear-gradient(160deg,var(--primary) 0%,var(--primary-d) 100%);border-radius:20px;
  padding:56px 40px;text-align:center;color:#fff;display:flex;flex-direction:column;align-items:center;gap:16px;}
.cta-band h2{font-size:28px;font-weight:800;letter-spacing:-.025em;margin:0;}
.cta-band p{font-size:14.5px;color:rgba(255,255,255,.82);margin:0;max-width:420px;}
.cta-band .btn-primary{background:#fff;color:var(--primary-d);}
.cta-band .btn-primary:hover{background:#eef3fb;}
.cta-band .cta-credentials{font-size:13px;color:rgba(255,255,255,.75);max-width:none;}
.cta-band .cta-credentials code{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);border-radius:5px;padding:1px 6px;font-size:12.5px;color:#fff;}

/* ===== Open source ===== */
.oss-card{display:flex;align-items:center;gap:32px;background:var(--surface);border:1px solid var(--border);
  border-radius:20px;padding:44px;box-shadow:var(--shadow);}
.oss-icon{width:64px;height:64px;border-radius:16px;background:var(--primary-soft);color:var(--primary-d);
  display:grid;place-items:center;flex-shrink:0;}
.oss-body{flex:1;display:flex;flex-direction:column;gap:8px;}
.oss-body h2{font-size:24px;font-weight:800;letter-spacing:-.025em;margin:0;}
.oss-body p{font-size:14.5px;color:var(--text-2);line-height:1.6;margin:0;max-width:520px;}
.oss-actions{display:flex;gap:12px;flex-shrink:0;}
.btn-github{background:var(--text);color:#fff;}
.btn-github:hover{background:#0d1524;}
@media(max-width:760px){
  .oss-card{flex-direction:column;text-align:center;padding:32px 24px;}
  .oss-actions{flex-direction:column;width:100%;}
}

/* ===== Footer ===== */
footer{border-top:1px solid var(--border);padding:32px 24px;}
.footer-inner{max-width:1140px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;}
.footer-brand{display:flex;align-items:center;gap:9px;color:var(--text-2);font-size:13px;font-weight:600;}
.footer-brand .brand-mark{width:24px;height:24px;border-radius:7px;}
.footer-links{display:flex;gap:20px;}
.footer-links a{font-size:13px;color:var(--text-2);font-weight:500;}
.footer-links a:hover{color:var(--primary-d);}

@media(max-width:760px){
  .hero-title{font-size:36px;}
  .cap-grid{grid-template-columns:1fr;}
  .header-cta .btn-soft{display:none;}
  .cta-band{padding:40px 24px;}
}

/* ===== Lightbox ===== */
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(10,14,22,.88);
  display:flex;align-items:center;justify-content:center;padding:56px;}
.lightbox[hidden]{display:none;}
.lightbox-img{max-width:100%;max-height:100%;border-radius:10px;box-shadow:0 24px 60px -20px rgba(0,0,0,.5);}
.lightbox-close{position:absolute;top:20px;right:24px;width:42px;height:42px;border-radius:50%;
  border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.08);color:#fff;
  display:grid;place-items:center;transition:.13s;}
.lightbox-close:hover{background:rgba(255,255,255,.18);}