:root {
  --bg: #eef5ff;
  --bg-strong: #dfeeff;
  --ink: #0e1d38;
  --muted: #5d6e8d;
  --line: rgba(24, 98, 215, 0.12);
  --blue: #168af2;
  --blue-deep: #0d63ff;
  --blue-soft: #dff0ff;
  --card: rgba(255, 255, 255, 0.88);
  --shadow: 0 24px 70px rgba(13, 44, 97, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "SF Pro Display", "PingFang SC", "Helvetica Neue", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(60, 196, 255, 0.25), transparent 30%),
    radial-gradient(circle at 90% 20%, rgba(11, 118, 255, 0.16), transparent 24%),
    linear-gradient(180deg, #f8fbff 0%, #edf5ff 46%, #e8f1ff 100%);
}

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

.page-shell {
  width: min(1200px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 26px 0 40px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  box-shadow: 0 12px 30px rgba(18, 106, 224, 0.18);
}

.brand strong {
  display: block;
  font-size: 22px;
  line-height: 1.1;
}

.brand-eyebrow {
  display: block;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--blue-deep);
  opacity: 0.7;
}

.topbar-link {
  color: var(--muted);
  font-weight: 600;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) 380px;
  gap: 28px;
  align-items: stretch;
  margin-top: 28px;
}

.hero-copy,
.visual-card {
  border: 1px solid var(--line);
  border-radius: 34px;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero-copy {
  padding: 38px;
}

.badge-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(13, 99, 255, 0.1);
  color: var(--blue-deep);
  font-size: 13px;
  font-weight: 700;
}

.badge-soft {
  background: rgba(60, 196, 255, 0.12);
}

.hero-copy h1 {
  margin: 18px 0 14px;
  font-size: clamp(42px, 6vw, 68px);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.hero-lede {
  margin: 0;
  max-width: 720px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.cta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.download-card {
  border-radius: 28px;
  padding: 24px;
  border: 1px solid rgba(17, 88, 202, 0.1);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(237, 246, 255, 0.92));
}

.android-card {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.ios-card {
  background:
    linear-gradient(180deg, rgba(243, 249, 255, 0.98), rgba(227, 241, 255, 0.94));
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.platform-tag {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--blue-deep);
  text-transform: uppercase;
}

.platform-status {
  font-size: 13px;
  color: var(--muted);
}

.download-card h2 {
  margin: 18px 0 10px;
  font-size: 28px;
}

.download-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
  min-height: 84px;
}

.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-top: 20px;
  padding: 16px 20px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color: white;
  font-size: 17px;
  font-weight: 800;
  box-shadow: 0 16px 32px rgba(13, 99, 255, 0.22);
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    opacity 0.18s ease;
}

.download-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 38px rgba(13, 99, 255, 0.28);
}

.download-button.secondary {
  background: linear-gradient(135deg, #4abfff, #1f82ff);
}

.download-button[aria-disabled="true"] {
  opacity: 0.55;
  pointer-events: none;
  box-shadow: none;
}

.tips-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 18px;
  margin-top: 24px;
  padding: 22px 24px;
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(230, 242, 255, 0.78), rgba(255, 255, 255, 0.7));
}

.tips-panel h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.tips-panel ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.85;
}

.tip-meta {
  display: grid;
  align-content: start;
  gap: 6px;
  padding: 12px 14px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.72);
}

.tip-meta span,
.tip-meta small {
  color: var(--muted);
}

.tip-meta strong {
  font-size: 20px;
}

.visual-card {
  position: relative;
  overflow: hidden;
  min-height: 100%;
  padding: 34px 28px;
  text-align: center;
}

.glow {
  position: absolute;
  inset: auto auto 18% 50%;
  width: 260px;
  height: 260px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(60, 196, 255, 0.32), transparent 70%);
  filter: blur(10px);
}

.visual-logo {
  position: relative;
  z-index: 1;
  width: 210px;
  height: 210px;
  margin-top: 14px;
  border-radius: 52px;
  box-shadow: 0 28px 48px rgba(16, 103, 233, 0.18);
}

.visual-card h3 {
  position: relative;
  z-index: 1;
  margin: 24px 0 10px;
  font-size: 34px;
}

.visual-card p {
  position: relative;
  z-index: 1;
  margin: 0 auto;
  max-width: 280px;
  color: var(--muted);
  line-height: 1.75;
}

.visual-specs {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.visual-specs div {
  padding: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.68);
}

.visual-specs span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.visual-specs strong {
  display: block;
  margin-top: 7px;
  font-size: 19px;
}

@media (max-width: 980px) {
  .hero-layout,
  .cta-grid,
  .tips-panel {
    grid-template-columns: 1fr;
  }

  .page-shell {
    width: min(100vw - 28px, 1200px);
  }

  .hero-copy,
  .visual-card {
    padding: 24px;
    border-radius: 28px;
  }

  .visual-logo {
    width: 170px;
    height: 170px;
    border-radius: 40px;
  }
}