:root {
  --ink: #0b1322; --ink2: #101b30; --panel: #16243c; --line: #2c4260;
  --sand: #e8d89a; --foam: #7fe3d0; --coral: #d4634f; --gold: #f2b950;
  --text: #d9e5f2; --muted: #93a9c4;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--ink); color: var(--text);
  font-family: system-ui, "Segoe UI", sans-serif; line-height: 1.6; }
a { color: var(--foam); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
/* header */
.nav { display: flex; align-items: center; gap: 14px; padding: 14px 0; }
.nav .logo { font-weight: 800; letter-spacing: 2px; font-size: 18px; color: var(--sand); }
.nav .logo i { font-style: normal; color: var(--foam); }
.nav .grow { flex: 1; }
.btn { display: inline-block; background: linear-gradient(140deg, #2a7f6d, #1c4f5e);
  border: 1px solid #5fd8c8; color: #eafff8; border-radius: 12px; padding: 12px 24px;
  font-size: 16px; text-decoration: none; font-weight: 600; }
.btn:hover { filter: brightness(1.2); box-shadow: 0 0 22px rgba(95, 216, 200, 0.45); }
.btn.ghost { background: transparent; border-color: var(--line); color: var(--muted); }
/* hero */
.hero { position: relative; border-bottom: 1px solid var(--line);
  background: radial-gradient(90% 70% at 70% 10%, #1d2e50 0%, var(--ink) 55%); overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: minmax(280px, 1fr) minmax(280px, 1.15fr);
  gap: 28px; align-items: center; padding-top: 34px; padding-bottom: 44px; }
.hero h1 { font-size: clamp(38px, 7vw, 64px); margin: 0; color: var(--sand);
  letter-spacing: 3px; line-height: 1.05; }
.hero .tagline { color: var(--foam); font-size: clamp(15px, 2.4vw, 19px); margin: 8px 0 14px; }
.hero p.blurb { color: var(--muted); margin: 0 0 20px; max-width: 46ch; }
#hero-preview { width: 100%; height: 340px; border-radius: 16px; border: 1px solid var(--line);
  background: #0a1120; box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5); display: block; }
.badges { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.badge { border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px;
  font-size: 12.5px; color: var(--muted); background: rgba(22, 36, 60, 0.6); }
/* sections */
section { padding: 46px 0; }
h2 { font-size: 26px; color: var(--sand); letter-spacing: 1px; margin: 0 0 18px; }
#features { list-style: none; margin: 0; padding: 0; display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
#features li { background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 16px 18px; font-size: 14.5px; }
#features b { display: block; color: #fff; font-size: 16px; margin-bottom: 4px; }
#features .fi { font-size: 22px; }
#gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px; margin-top: 6px; }
#gallery figure { margin: 0; }
#gallery img { width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--line);
  display: block; background: #0a1120; }
#gallery figcaption { color: var(--muted); font-size: 12.5px; margin-top: 5px; }
#controls { background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 20px 22px; font-size: 14.5px; }
#controls .keys { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 6px; }
#controls kbd { background: #0d1626; border: 1px solid var(--line); border-bottom-width: 3px;
  border-radius: 6px; padding: 2px 8px; font-family: ui-monospace, monospace; font-size: 12.5px; color: var(--sand); }
.cta { text-align: center; background: linear-gradient(160deg, #14213a, #0b1322);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.cta .btn { font-size: 20px; padding: 16px 36px; }
footer { padding: 26px 0 34px; color: #62789a; font-size: 12.5px; text-align: center; }
@media (max-width: 760px) {
  .hero .wrap { grid-template-columns: 1fr; padding-top: 20px; padding-bottom: 28px; }
  #hero-preview { height: 240px; }
  section { padding: 34px 0; }
}