* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: radial-gradient(1200px 700px at 75% -10%, #10304a 0%, #0a1220 55%) #0a1220;
  color: #dcecf4; line-height: 1.6; overflow-x: hidden;
}
:root { --teal: #2ee6c8; --amber: #ffc860; --red: #ff5a4e; --ink: #9fd8c8; }
#nav {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between;
  padding: 14px 5vw; background: #0a1220cc; backdrop-filter: blur(8px);
  border-bottom: 1px solid #2ee6c833;
}
.logo { font-weight: 800; letter-spacing: 0.18em; color: var(--teal); text-shadow: 0 0 18px #2ee6c855; }
.btn {
  display: inline-block; text-decoration: none; font-weight: 800; letter-spacing: 0.1em;
  color: #06241c; background: linear-gradient(180deg, #45f2d2, #1fbfa4);
  border-radius: 12px; padding: 14px 34px; box-shadow: 0 6px 30px #2ee6c844; transition: transform 0.15s, filter 0.15s;
}
.btn:hover { filter: brightness(1.14); transform: translateY(-2px); }
.btn.small { padding: 8px 18px; font-size: 13px; }
.btn.big { font-size: 18px; }
#hero {
  display: grid; grid-template-columns: minmax(280px, 520px) 1fr; gap: 34px; align-items: center;
  padding: 48px 5vw 40px;
}
#hero h1 {
  font-size: clamp(38px, 7vw, 72px); line-height: 1.02; letter-spacing: 0.06em; color: #eafff7;
  text-shadow: 0 0 34px #2ee6c866, 0 2px 0 #0a5a49;
}
.tagline { color: var(--ink); font-size: clamp(15px, 2vw, 19px); margin: 14px 0 22px; max-width: 46ch; }
.cta-row { display: flex; flex-direction: column; gap: 10px; }
.fine { font-size: 12px; color: #6f93a6; }
.hero-frame {
  position: relative; border: 1px solid #2ee6c844; border-radius: 18px; overflow: hidden;
  box-shadow: 0 24px 90px #000c, 0 0 60px #2ee6c822; background: #0c1a26;
}
.hero-frame::after {
  content: "LIVE PREVIEW"; position: absolute; top: 10px; left: 12px; font-size: 9px; letter-spacing: 0.22em;
  color: #2ee6c8; background: #06241c99; padding: 3px 9px; border-radius: 20px; pointer-events: none;
}
#hero-preview { display: block; width: 100%; height: clamp(240px, 38vw, 420px); }
main { padding: 10px 5vw 40px; max-width: 1180px; margin: 0 auto; }
section { margin: 44px 0; }
h2 { font-size: clamp(22px, 3vw, 30px); color: #eafff7; letter-spacing: 0.05em; margin-bottom: 14px; }
h2::before { content: "◈ "; color: var(--teal); }
#what p { max-width: 70ch; color: #b9d2de; }
#features { list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; padding: 0; }
#features li {
  background: #10232fdd; border: 1px solid #2ee6c833; border-left: 3px solid var(--teal);
  border-radius: 12px; padding: 14px 16px; font-size: 14.5px; color: #c4dfe8;
}
#features b { color: #eafff7; }
#gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
#gallery figure { background: #10232f; border: 1px solid #2ee6c833; border-radius: 14px; overflow: hidden; margin: 0; }
#gallery img { display: block; width: 100%; height: auto; }
#gallery figcaption { padding: 10px 12px; font-size: 13px; color: var(--ink); }
#controls { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin-bottom: 22px; }
.ctl { background: #10232fdd; border: 1px solid #ffffff22; border-radius: 12px; padding: 16px; }
.ctl h3 { color: var(--amber); font-size: 15px; letter-spacing: 0.08em; margin-bottom: 6px; }
.ctl p { font-size: 14px; color: #c4dfe8; }
.ctl b { color: #eafff7; }
footer {
  border-top: 1px solid #2ee6c822; padding: 26px 5vw; font-size: 12.5px; color: #6f93a6; text-align: center;
}
@media (max-width: 860px) {
  #hero { grid-template-columns: 1fr; padding-top: 26px; }
  .hero-frame { order: -1; }
}