@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #1a1a2e;
  background: #f8f6ff;
  line-height: 1.6;
}

/* Platform nav */
.platform-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #eef;
  position: sticky;
  top: 0;
  z-index: 100;
}

.platform-nav .logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: #1a1a2e;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.platform-nav .logo-mark {
  width: 2rem;
  height: 2rem;
  border-radius: 0.7rem;
  display: inline-grid;
  place-items: center;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  color: #fff;
  font-weight: 800;
  font-size: 0.95rem;
  box-shadow: 0 8px 20px rgba(99,102,241,0.3);
}

.platform-nav .links { display: flex; align-items: center; gap: 1.5rem; }
.platform-nav .links a { text-decoration: none; color: #888; font-size: 0.9rem; font-weight: 500; }
.platform-nav .links a:hover { color: #1a1a2e; }
.platform-nav .nav-cta {
  background: linear-gradient(135deg, #6366f1, #a855f7);
  color: #fff !important;
  padding: 0.5rem 1.2rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.85rem;
  box-shadow: 0 4px 12px rgba(99,102,241,0.25);
  transition: transform 0.15s;
}
.platform-nav .nav-cta:hover { transform: translateY(-1px); color: #fff; }

/* Layout */
.container { max-width: 1000px; margin: 0 auto; padding: 0 1.5rem; }
.container-narrow { max-width: 700px; margin: 0 auto; padding: 0 1.5rem; }

.page-header { text-align: center; padding: 3rem 0 1.5rem; }
.page-header h1 { font-size: 2.2rem; font-weight: 900; }
.page-header p { color: #666; margin-top: 0.5rem; font-size: 1.05rem; }

/* Cards */
.card {
  background: #fff;
  border: 1px solid #e8e4f0;
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  border-color: #c7c7f0;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99,102,241,0.06);
}

/* Grids */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.25rem; }

/* Footer */
.platform-footer {
  text-align: center;
  padding: 2.5rem 1.5rem;
  color: #aaa;
  font-size: 0.82rem;
  border-top: 1px solid #e8e4f0;
  margin-top: 2rem;
}

.platform-footer a { color: #6366f1; text-decoration: none; }

/* Buttons */
.btn-accent {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  color: #fff;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 8px 24px rgba(99,102,241,0.25);
  transition: transform 0.2s;
}

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

/* Utility */
.text-center { text-align: center; }
.text-muted { color: #666; }
.text-soft { color: #aaa; }
.mono { font-family: 'IBM Plex Mono', monospace; }
.accent { color: #6366f1; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .platform-nav { padding: 0.8rem 1.25rem; }
  .platform-nav .links { gap: 0.8rem; }
}