:root {
  --bg0: #0b1220;
  --bg1: #0f2a3a;
  --card: rgba(255, 255, 255, 0.08);
  --stroke: rgba(255, 255, 255, 0.14);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.72);
  --accent: #4dd0e1;
  --accent2: #ffd166;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica,
    Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background:
    radial-gradient(1100px 700px at 15% 20%, rgba(77, 208, 225, 0.22), transparent 60%),
    radial-gradient(900px 600px at 85% 25%, rgba(255, 209, 102, 0.18), transparent 55%),
    radial-gradient(900px 700px at 65% 85%, rgba(139, 92, 246, 0.16), transparent 60%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
}

.wrap {
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 16px;
}

.shell {
  width: 100%;
  max-width: 980px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
}

@media (max-width: 860px) {
  .shell {
    grid-template-columns: 1fr;
  }
}

.panel {
  border: 1px solid var(--stroke);
  background: var(--card);
  backdrop-filter: blur(10px);
  border-radius: 18px;
  padding: 22px;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.35);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid var(--stroke);
  background:
    radial-gradient(16px 16px at 30% 30%, rgba(77, 208, 225, 0.95), transparent 70%),
    radial-gradient(18px 18px at 70% 60%, rgba(255, 209, 102, 0.85), transparent 72%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.02));
}

h1 {
  font-size: 28px;
  line-height: 1.15;
  margin: 0;
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 10px 0 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.45;
}

.grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 520px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

.item {
  border: 1px solid var(--stroke);
  border-radius: 14px;
  padding: 12px 12px;
  background: rgba(0, 0, 0, 0.12);
}

.item strong {
  display: block;
  font-size: 14px;
  margin-bottom: 6px;
}

.item span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.cta {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 650;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  transition: transform 120ms ease, background 120ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.12);
}

.btn.primary {
  border-color: rgba(77, 208, 225, 0.35);
  background: linear-gradient(135deg, rgba(77, 208, 225, 0.24), rgba(77, 208, 225, 0.08));
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.mini {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.62);
  font-size: 12px;
  line-height: 1.4;
}

.kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(0, 0, 0, 0.18);
  color: rgba(255, 255, 255, 0.86);
}