:root {
  --bg: #0a0a0a;
  --card: #141414;
  --border: #262626;
  --border-hover: #404040;
  --text: #e5e5e5;
  --muted: #a3a3a3;
  --accent: #34d399;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; min-height: 100%;
  background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
body {
  display: flex; flex-direction: column; align-items: center;
  padding: 48px 20px 32px;
}
header { text-align: center; margin-bottom: 36px; }
h1 {
  margin: 0 0 6px; font-size: 22px; font-weight: 700;
  letter-spacing: -0.01em;
}
header p { margin: 0; color: var(--muted); font-size: 14px; }
.back {
  align-self: flex-start; margin: 0 0 20px;
  max-width: 760px; width: 100%;
}
.back a {
  color: var(--muted); text-decoration: none; font-size: 13px;
}
.back a:hover { color: var(--text); }
.grid {
  display: grid; gap: 14px; width: 100%; max-width: 760px;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}
a.card {
  display: flex; flex-direction: column; gap: 10px;
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 20px; text-decoration: none; color: inherit;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
a.card:hover, a.card:focus-visible {
  border-color: var(--border-hover); transform: translateY(-1px);
}
.icon {
  font-size: 26px; width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: #1f1f1f; border-radius: 10px;
}
.card-title { font-size: 15px; font-weight: 600; }
.card-desc { font-size: 12.5px; color: var(--muted); line-height: 1.4; }
footer { margin-top: 40px; color: #525252; font-size: 11.5px; }