* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #0f172a 0%, #111827 100%);
  color: #e5e7eb;
}

a {
  color: inherit;
  text-decoration: none;
}

.page {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 64px;
}

.grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: rgba(17, 24, 39, 0.88);
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 24px;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.35);
}

.hero {
  display: flex;
  gap: 28px;
  align-items: center;
  padding: 32px;
  margin-bottom: 24px;
}

.app-icon {
  width: 108px;
  height: 108px;
  border-radius: 24px;
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 1px;
  flex-shrink: 0;
}

.hero-copy {
  flex: 1;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.15);
  color: #93c5fd;
  font-size: 13px;
  margin: 0 0 12px;
}

h1,
h2 {
  margin: 0;
}

h1 {
  font-size: clamp(28px, 5vw, 42px);
  line-height: 1.12;
}

h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.subtitle,
.section-text,
.tip,
.steps,
.notice,
.meta {
  color: #cbd5e1;
}

.subtitle {
  margin: 14px 0 18px;
  font-size: 16px;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  font-size: 14px;
  margin-bottom: 20px;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.button {
  border: none;
  border-radius: 14px;
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.18s ease, opacity 0.18s ease, background 0.18s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.primary {
  background: #2563eb;
  color: #ffffff;
}

.secondary {
  background: rgba(148, 163, 184, 0.14);
  color: #e5e7eb;
}

.ghost {
  background: #1d4ed8;
  color: #ffffff;
}

.tip {
  margin: 14px 0 0;
  font-size: 14px;
}

.grid .card {
  padding: 24px;
}

.qr-wrap {
  display: flex;
  justify-content: center;
  padding: 16px 0;
}

.qr-image {
  width: 220px;
  height: 220px;
  border-radius: 16px;
  background: #ffffff;
  padding: 10px;
}

.link-label {
  font-size: 13px;
  color: #94a3b8;
  margin: 8px 0;
}

.copy-row {
  display: flex;
  gap: 12px;
}

.copy-row input {
  flex: 1;
  min-width: 0;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(15, 23, 42, 0.7);
  color: #e5e7eb;
  padding: 14px 16px;
  font-size: 14px;
}

.steps {
  padding-left: 22px;
  line-height: 1.8;
  margin: 0 0 18px;
}

.notice {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

@media (max-width: 840px) {
  .hero {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .copy-row {
    flex-direction: column;
  }

  .button,
  .copy-row input {
    width: 100%;
  }
}