* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #1a56db;
  --primary-dark: #1e429f;
  --text: #111827;
  --text-muted: #6b7280;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e5e7eb;
  --radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

/* NAV */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 48px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.2rem;
}

.nav-logo img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--primary);
}

/* HERO */
.hero {
  text-align: center;
  padding: 80px 24px 64px;
  background: linear-gradient(160deg, #eff6ff 0%, #e0f2fe 100%);
}

.hero img.app-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  object-fit: contain;
  margin-bottom: 24px;
  box-shadow: 0 8px 30px rgba(26,86,219,0.18);
}

.hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--text);
  max-width: 640px;
  margin: 0 auto 16px;
  line-height: 1.2;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  transition: background 0.2s, transform 0.1s;
}

.btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

/* FEATURES */
.features {
  padding: 72px 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 1.9rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-sub {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 48px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.card p {
  font-size: 0.93rem;
  color: var(--text-muted);
}

/* DOWNLOAD CTA */
.download-cta {
  background: linear-gradient(160deg, #eff6ff 0%, #e0f2fe 100%);
  text-align: center;
  padding: 72px 24px;
}

.download-cta h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.download-cta p {
  color: var(--text-muted);
  margin-bottom: 32px;
}

/* FOOTER */
footer {
  background: #1f2937;
  color: #9ca3af;
  text-align: center;
  padding: 32px 24px;
  font-size: 0.88rem;
}

footer a {
  color: #9ca3af;
  text-decoration: none;
  margin: 0 12px;
}

footer a:hover {
  color: #fff;
}

.footer-links {
  margin-bottom: 12px;
}

/* INNER PAGES */
.page-hero {
  background: linear-gradient(160deg, #eff6ff 0%, #e0f2fe 100%);
  padding: 56px 24px 40px;
  text-align: center;
}

.page-hero h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.page-hero p {
  color: var(--text-muted);
}

.page-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 24px 80px;
}

.page-content h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 36px;
  margin-bottom: 10px;
  color: var(--primary);
}

.page-content p,
.page-content li {
  font-size: 0.97rem;
  color: #374151;
  margin-bottom: 10px;
}

.page-content ul {
  padding-left: 20px;
  margin-bottom: 10px;
}

.contact-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-top: 32px;
}

.contact-card p {
  margin-bottom: 8px;
}

.contact-card strong {
  color: var(--primary);
}

@media (max-width: 640px) {
  nav { padding: 14px 20px; }
  .nav-links { gap: 16px; }
  .hero h1 { font-size: 1.9rem; }
}