:root {
  --brand-blue: #1f6bff;
  --brand-blue-dark: #0d3fb8;
  --bg: #eaf1ff;
  --card-bg: #f6f8ff;
  --text-main: #1b2b4b;
  --text-sub: #6b7a99;
  --shadow: 0 12px 30px rgba(31, 107, 255, 0.25);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-main);
}

.page {
  width: min(480px, 100%);
  margin: 18px;
  background: #fdfdff;
  border-radius: 28px;
  border: 1px solid rgba(31, 107, 255, 0.08);
  box-shadow: 0 18px 40px rgba(18, 41, 89, 0.12);
  overflow: hidden;
}

.header {
  padding: 44px 32px 28px;
  text-align: center;
}

.logo-wrapper {
  width: 120px;
  height: 120px;
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  background: #fff;
  border-radius: 26px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
}

.logo-wrapper img {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  object-fit: cover;
}

.title {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 0.4px;
  margin: 6px 0 8px;
}

.subtitle {
  margin: 0;
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.6;
}

.cta {
  margin: 24px 28px 10px;
}

.download-btn {
  width: 100%;
  background: linear-gradient(120deg, var(--brand-blue) 0%, #3c8bff 100%);
  color: #fff;
  border: none;
  border-radius: 16px;
  padding: 14px 18px;
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.08s ease, box-shadow 0.12s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.download-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 32px rgba(31, 107, 255, 0.28);
}

.download-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow);
}

.hint {
  text-align: center;
  color: var(--text-sub);
  font-size: 14px;
  margin: 10px 22px 0;
  line-height: 1.6;
}

.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 18px 22px 26px;
}

.card {
  background: var(--card-bg);
  border: 1px solid rgba(31, 107, 255, 0.08);
  border-radius: 18px;
  padding: 16px;
  text-align: center;
  box-shadow: 0 10px 24px rgba(14, 33, 81, 0.08);
}

.card img {
  width: 54px;
  height: 54px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 10px;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  margin: 4px 0 6px;
}

.card-desc {
  margin: 0 0 12px;
  color: var(--text-sub);
  font-size: 13px;
  line-height: 1.5;
}

.card button {
  width: 100%;
  padding: 11px 10px;
  border-radius: 12px;
  border: 1px solid var(--brand-blue);
  background: #fff;
  color: var(--brand-blue);
  font-weight: 700;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}

.card button:hover {
  background: var(--brand-blue);
  color: #fff;
}

.footer {
  text-align: center;
  padding: 0 18px 26px;
  color: var(--text-sub);
  font-size: 12px;
}

@media (max-width: 520px) {
  .page {
    margin: 14px;
  }

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