* { box-sizing: border-box; }

:root {
  color-scheme: dark;
  --ink: rgba(255, 255, 255, 0.9);
  --muted: rgba(255, 255, 255, 0.48);
  --line: rgba(255, 255, 255, 0.15);
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: #000;
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

body {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
}

.galaxy-container {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: auto;
}

.galaxy-container canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.page-logo {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 3;
}

.page-logo img {
  display: block;
  width: 180px;
  height: auto;
}

.page-back {
  position: fixed;
  top: 26px;
  right: 28px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  height: 30px;
  color: rgba(255,255,255,.72);
  font-size: 14px;
  letter-spacing: .12em;
  line-height: 30px;
  text-decoration: none;
  transition: color .25s ease, opacity .25s ease;
}

.page-back:hover {
  color: #fff;
}

.page-content {
  position: relative;
  z-index: 2;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 120px 28px 80px;
  text-align: center;
  pointer-events: none;
}

.page-card {
  width: min(680px, 92vw);
  padding: 54px 30px 58px;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(255,255,255,.055), rgba(255,255,255,.012));
  box-shadow: 0 0 80px rgba(255,255,255,.035), inset 0 0 60px rgba(255,255,255,.018);
  backdrop-filter: blur(10px);
}

.page-kicker {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: .28em;
  text-transform: uppercase;
}

.page-title {
  margin: 0;
  font-size: clamp(32px, 6vw, 68px);
  font-weight: 300;
  letter-spacing: .1em;
}

.page-description {
  margin: 22px auto 0;
  max-width: 440px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
  letter-spacing: .08em;
}

@media (max-width: 768px) {
  .page-logo { left: 12px; top: 16px; }
  .page-logo img { width: 140px; }
  .page-back { top: 22px; right: 16px; height: 22px; font-size: 12px; line-height: 22px; }
  .page-card { padding: 42px 22px 46px; }
}