* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: "Segoe UI", system-ui, -apple-system, sans-serif; background: #0b1226; color: #dfe8ff; }
:root { --amber: #ffc95e; --cyan: #59e6ff; --rose: #ff4f7e; --ink: #0b1226; --panel: #101a33; }
h1, h2, h3 { letter-spacing: 0.5px; }
h2 { font-size: 26px; margin-bottom: 18px; color: #fff; }
#nav { position: fixed; top: 0; left: 0; right: 0; display: flex; justify-content: space-between;
  align-items: center; padding: 14px 22px; background: #0b1226cc; backdrop-filter: blur(6px);
  border-bottom: 1px solid #1d2c4d; z-index: 10; }
.logo { font-weight: 700; font-size: 18px; }
.logo b { color: var(--amber); }
.play-small { color: #1a1005; text-decoration: none; font-weight: 700; padding: 8px 18px; border-radius: 10px;
  background: linear-gradient(#ff9a3d, #e0662a); box-shadow: 0 3px 14px #ff9a3d44; }
.play-small.big { font-size: 18px; padding: 14px 34px; display: inline-block; }
#hero { position: relative; height: 92vh; min-height: 560px; display: flex; align-items: center; overflow: hidden; }
#hero-preview { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
#hero-text { position: relative; padding: 0 8vw; max-width: 720px; }
#hero-text h1 { font-size: clamp(40px, 7vw, 76px); line-height: 1.05; text-shadow: 0 4px 30px #000c; }
.grad { background: linear-gradient(90deg, var(--amber), var(--cyan)); -webkit-background-clip: text;
  background-clip: text; color: transparent; }
.tagline { margin: 16px 0 26px; font-size: clamp(15px, 2vw, 19px); color: #b9c8e8; max-width: 34em;
  text-shadow: 0 2px 12px #000a; }
#play-now { display: inline-block; text-decoration: none; font-weight: 800; font-size: 20px; color: #1a1005;
  padding: 15px 38px; border-radius: 14px; background: linear-gradient(#ff9a3d, #e0662a);
  box-shadow: 0 6px 26px #ff9a3d55; transition: transform 0.15s; }
#play-now:hover { transform: translateY(-2px) scale(1.03); }
.hint { margin-top: 14px; font-size: 13px; color: #8ea3c9; text-shadow: 0 1px 8px #000; }
main { max-width: 1060px; margin: 0 auto; padding: 30px 22px 10px; }
main section { margin: 54px 0; }
#about p, #controls p { line-height: 1.75; color: #b9c8e8; font-size: 15.5px; }
.lumen { color: var(--cyan); font-weight: 700; }
#features { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
#features li { background: var(--panel); border: 1px solid #1d2c4d; border-radius: 14px; padding: 16px 18px;
  font-size: 15px; line-height: 1.6; color: #b9c8e8; }
#features li b { color: #fff; display: block; margin-bottom: 4px; }
#features li::before { content: "✦ "; color: var(--cyan); }
#controls { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.ctrl { background: var(--panel); border: 1px solid #1d2c4d; border-radius: 14px; padding: 18px; }
.ctrl h3 { color: var(--amber); margin-bottom: 8px; }
kbd { background: #1a2b4d; border: 1px solid #3b6497; border-bottom-width: 2px; border-radius: 6px;
  padding: 2px 7px; font: inherit; font-size: 13px; color: #eaf2ff; }
#gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
#gallery figure { background: var(--panel); border: 1px solid #1d2c4d; border-radius: 14px; overflow: hidden; }
#gallery img { display: block; width: 100%; height: auto; }
#gallery figcaption { padding: 9px 12px; font-size: 13px; color: #8ea3c9; }
#cta { text-align: center; padding: 30px 0 50px; }
#cta h2 { margin-bottom: 22px; }
footer { text-align: center; padding: 30px; color: #5f7196; font-size: 13px; border-top: 1px solid #1d2c4d; }
@media (max-width: 760px) {
  #hero { height: 82vh; min-height: 500px; }
  #hero-text { padding: 0 24px; }
  #features, #controls { grid-template-columns: 1fr; }
  #gallery { grid-template-columns: 1fr 1fr; }
  main section { margin: 40px 0; }
}