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

:root {
  --blue-600: #1a56db;
  --blue-700: #1648c0;
  --blue-50:  #eff6ff;
  --blue-100: #dbeafe;
  --red-500:  #ef4444;
  --red-50:   #fef2f2;
  --red-100:  #fee2e2;
  --gray-50:  #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --white:    #ffffff;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 32px rgba(0,0,0,.12), 0 4px 12px rgba(0,0,0,.07);

  --radius: 14px;
  --radius-sm: 8px;
}

html { font-size: 16px; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ---- HEADER ---- */
.header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 16px 24px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--blue-600);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--white);
}

.logo-icon svg {
  width: 22px;
  height: 22px;
}

.logo-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.2;
}

.logo-sub {
  font-size: .75rem;
  color: var(--gray-500);
  margin-top: 2px;
}

/* ---- MAIN ---- */
.main {
  flex: 1;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 48px 24px 64px;
}

/* ---- HERO ---- */
.hero {
  text-align: center;
  margin-bottom: 48px;
}

.hero-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -.02em;
  line-height: 1.15;
}

.hero-sub {
  margin-top: 12px;
  font-size: 1.05rem;
  color: var(--gray-500);
  font-weight: 400;
}

/* ---- CARDS ---- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.app-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: box-shadow .18s ease, transform .18s ease;
}

.app-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* Card icon banner */
.card-icon {
  padding: 28px 28px 20px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.card-icon svg {
  width: 48px;
  height: 48px;
}

.card-icon--blue {
  background: linear-gradient(135deg, var(--blue-50) 0%, var(--blue-100) 100%);
  color: var(--blue-600);
}

.card-icon--red {
  background: linear-gradient(135deg, var(--red-50) 0%, var(--red-100) 100%);
  color: var(--red-500);
}

/* Card body */
.card-body {
  padding: 0 28px 20px;
  flex: 1;
}

.card-tag {
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--gray-400);
  margin-bottom: 8px;
}

.card-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
  letter-spacing: -.01em;
}

.card-desc {
  font-size: .9rem;
  color: var(--gray-500);
  line-height: 1.65;
  margin-bottom: 16px;
}

.card-features {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.feature-pill {
  font-size: .72rem;
  font-weight: 500;
  background: var(--gray-100);
  color: var(--gray-700);
  border-radius: 99px;
  padding: 4px 10px;
}

/* Card footer */
.card-footer {
  padding: 16px 28px 24px;
  border-top: 1px solid var(--gray-100);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-size: .9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, box-shadow .15s;
  border: none;
}

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.btn-primary {
  background: var(--blue-600);
  color: var(--white);
  width: 100%;
  justify-content: center;
  box-shadow: 0 1px 4px rgba(26,86,219,.25);
}

.btn-primary:hover {
  background: var(--blue-700);
  box-shadow: 0 4px 12px rgba(26,86,219,.35);
}

/* ---- FOOTER ---- */
.footer {
  background: var(--white);
  border-top: 1px solid var(--gray-200);
  margin-top: auto;
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-lock {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .78rem;
  color: var(--gray-400);
}

.footer-copy {
  font-size: .78rem;
  color: var(--gray-400);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 600px) {
  .hero-title { font-size: 1.75rem; }
  .main { padding: 32px 16px 48px; }
  .hero { margin-bottom: 32px; }
  .card-icon, .card-body { padding-left: 20px; padding-right: 20px; }
  .card-footer { padding: 14px 20px 20px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 6px; }
}