:root { --ink: #d9eff5; --dim: #9cc4cf; --cyan: #35f0ff; --teal: #1de3b2;
  --deep: #04202c; --deep2: #02141d; --line: rgba(53,240,255,0.22); }
* { box-sizing: border-box; margin: 0; }
body { margin: 0; background: linear-gradient(180deg, var(--deep2), var(--deep) 40%, var(--deep2));
  color: var(--ink); font-family: ui-sans-serif, system-ui, "Segoe UI", sans-serif;
  overflow-x: hidden; }
.nav { display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px; border-bottom: 1px solid var(--line); }
.brand { letter-spacing: 0.35em; font-weight: 700; color: var(--cyan);
  text-shadow: 0 0 18px rgba(53,240,255,0.5); }
.nav-play { color: var(--ink); text-decoration: none; font-size: 14px;
  border: 1px solid var(--line); border-radius: 8px; padding: 7px 14px; }
.nav-play:hover { background: rgba(53,240,255,0.12); }

.hero { display: grid; grid-template-columns: 1fr 1.2fr; gap: 28px; align-items: center;
  max-width: 1180px; margin: 0 auto; padding: 48px 22px 40px; }
h1 { font-size: clamp(52px, 9vw, 96px); letter-spacing: 0.22em; line-height: 1;
  background: linear-gradient(120deg, #eafcff, var(--cyan) 55%, var(--teal));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 26px rgba(53,240,255,0.35)); }
.tagline { color: var(--dim); font-size: clamp(15px, 2.2vw, 20px); margin: 14px 0 26px;
  max-width: 46ch; }
.cta { display: inline-block; text-decoration: none; font-size: 19px; font-weight: 700;
  letter-spacing: 0.12em; color: #03222e; padding: 14px 40px; border-radius: 12px;
  background: linear-gradient(120deg, var(--cyan), var(--teal));
  box-shadow: 0 0 34px rgba(53,240,255,0.45); }
.cta:hover { filter: brightness(1.12); transform: translateY(-1px); }
.hero-note { margin-top: 14px; font-size: 12px; color: var(--dim); letter-spacing: 0.08em; }
.hero-canvas-wrap { position: relative; border: 1px solid var(--line); border-radius: 16px;
  padding: 8px; background: rgba(4,32,44,0.6); box-shadow: 0 10px 40px rgba(0,0,0,0.45); }
#hero-preview { display: block; width: 100%; aspect-ratio: 16 / 10; border-radius: 10px; }

main { max-width: 1180px; margin: 0 auto; padding: 0 22px 60px; }
.block { margin-top: 54px; }
h2 { font-size: 22px; letter-spacing: 0.18em; color: var(--cyan); margin-bottom: 16px;
  text-transform: uppercase; }
.lede { font-size: 17px; line-height: 1.7; color: var(--ink); max-width: 70ch; }
.two { display: grid; grid-template-columns: 1.1fr 1fr; gap: 34px; }
#features { list-style: none; padding: 0; display: grid; gap: 10px; }
#features li { padding: 12px 14px 12px 40px; position: relative; font-size: 15px;
  color: var(--ink); background: rgba(53,240,255,0.06); border: 1px solid var(--line);
  border-radius: 10px; line-height: 1.45; }
#features li::before { content: "◈"; position: absolute; left: 15px; color: var(--teal); }
#controls { font-size: 15px; line-height: 1.7; color: var(--ink); }
.keys { list-style: none; padding: 0; margin-top: 12px; display: grid; gap: 7px; }
.keys li { font-size: 14px; color: var(--dim); }
kbd { background: #0c3a4a; border: 1px solid rgba(53,240,255,0.4); border-bottom-width: 2px;
  border-radius: 5px; padding: 3px 8px; font-size: 12px; color: #d8f6ff; margin-right: 3px; }
#gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
#gallery img { width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--line);
  background: var(--deep2); min-height: 60px; }
.cap { margin-top: 10px; font-size: 12px; color: var(--dim); letter-spacing: 0.06em; }
footer { display: flex; justify-content: space-between; align-items: center; gap: 14px;
  flex-wrap: wrap; border-top: 1px solid var(--line); padding: 22px; font-size: 13px;
  color: var(--dim); letter-spacing: 0.08em; }
footer a { color: var(--cyan); text-decoration: none; font-weight: 600; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 30px; }
  .two { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  #gallery { grid-template-columns: 1fr; }
  .hero { padding: 22px 14px 28px; }
  main { padding: 0 14px 44px; }
  .cta { font-size: 17px; padding: 13px 32px; }
}