:root {
  --bg-a: #f7fbff;
  --bg-b: #eaf7ff;
  --text: #16314f;
  --muted: #4b6481;
  --line: #cfe1f2;
  --primary: #2f7ded;
  --primary-2: #22a774;
  --panel: #ffffffee;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  width: 100%;
  min-height: 100%;
  font-family: "Microsoft YaHei UI", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 12%, #ffe6f3 0%, transparent 30%),
    radial-gradient(circle at 88% 2%, #dff0ff 0%, transparent 36%),
    linear-gradient(180deg, var(--bg-a), var(--bg-b));
}

.page {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 16px 42px;
  display: grid;
  gap: 16px;
}

.hero,
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 12px 28px rgba(19, 53, 92, 0.12);
}

.badge {
  display: inline-block;
  margin: 0;
  padding: 4px 10px;
  border-radius: 999px;
  background: #e6f2ff;
  color: #2259a8;
  font-size: 12px;
  font-weight: 700;
}

h1 {
  margin: 10px 0 10px;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
}

.desc,
.version,
.panel p,
.panel li {
  margin: 0;
  line-height: 1.65;
  color: var(--muted);
}

.actions {
  margin: 14px 0 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  text-decoration: none;
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 700;
  font-size: 14px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
}

.btn-ghost {
  background: #eef6ff;
  color: #245593;
}

h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

.panel ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

@media (max-width: 640px) {
  .page { padding-top: 16px; }
  .hero,
  .panel { padding: 14px; }
  .btn { width: 100%; text-align: center; }
}