:root {
  --bg: #040714;
  --panel: rgba(11, 20, 43, 0.62);
  --panel-border: rgba(255, 255, 255, 0.1);
  --text-main: #f5f8ff;
  --text-soft: rgba(221, 229, 255, 0.8);
  --accent: #ff5e73;
  --accent-2: #49d8ff;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: "Inter", "SF Pro Text", "Segoe UI", sans-serif;
  color: var(--text-main);
  background: radial-gradient(circle at 20% -10%, rgba(255, 94, 115, 0.2), transparent 40%),
    radial-gradient(circle at 85% 10%, rgba(73, 216, 255, 0.15), transparent 35%),
    var(--bg);
}

a {
  color: #a6d7ff;
  text-decoration: none;
}

a:hover {
  color: #d7ebff;
}

.container {
  width: min(1060px, 92vw);
  margin: 0 auto;
}

.topbar {
  padding: 28px 0 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.top-link {
  font-size: 0.95rem;
  opacity: 0.9;
}

.hero {
  margin-top: 40px;
  margin-bottom: 28px;
}

.pill {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #ffd2d8;
  border: 1px solid rgba(255, 94, 115, 0.35);
  border-radius: 999px;
  padding: 7px 12px;
  backdrop-filter: blur(4px);
}

h1 {
  margin: 18px 0 16px;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero-text {
  max-width: 760px;
  color: var(--text-soft);
  font-size: 1.03rem;
  line-height: 1.75;
}

.grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding-bottom: 44px;
}

.card {
  border: 1px solid var(--panel-border);
  background: linear-gradient(160deg, rgba(17, 33, 68, 0.78), rgba(8, 14, 30, 0.82));
  border-radius: 16px;
  padding: 20px 20px 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.card h2,
.card h3 {
  margin-top: 0;
}

.card p {
  margin-bottom: 0;
  color: var(--text-soft);
  line-height: 1.65;
}

.install-card {
  margin: 14px 0;
}

.command-row {
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.command-row code {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  white-space: nowrap;
  border: 1px solid rgba(166, 215, 255, 0.35);
  border-radius: 12px;
  padding: 12px 14px;
  background: rgba(3, 8, 24, 0.88);
  font-size: 0.95rem;
  color: #dcf1ff;
}

.copy-btn {
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 10px;
  background: linear-gradient(140deg, rgba(255, 94, 115, 0.2), rgba(73, 216, 255, 0.2));
  color: #f7fbff;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 10px 14px;
  cursor: pointer;
}

.copy-btn:hover {
  border-color: rgba(255, 255, 255, 0.45);
}

.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 18px 0 30px;
  color: rgba(255, 255, 255, 0.65);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: center;
  gap: 12px;
}

.footer-left {
  text-align: left;
}

.footer-center {
  text-align: center;
}

.footer-right {
  text-align: right;
}

.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 90%);
}

.bg-glow {
  position: fixed;
  width: 44vw;
  max-width: 540px;
  height: 44vw;
  max-height: 540px;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  opacity: 0.3;
}

.glow-left {
  top: -100px;
  left: -80px;
  background: rgba(255, 85, 110, 0.55);
}

.glow-right {
  top: -90px;
  right: -120px;
  background: rgba(70, 208, 255, 0.5);
}

@media (max-width: 900px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .footer {
    grid-template-columns: 1fr;
  }

  .footer-left,
  .footer-center,
  .footer-right {
    text-align: center;
  }
}