:root {
  --blue: #4ea8ff;
  --orange: #ff8c42;
  --bg: #f4f8ff;
  --text: #1f2a37;
  --card: #ffffffcc;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, sans-serif; background: var(--bg); color: var(--text); }
body.dark { --bg: #111827; --text: #f9fafb; --card: #1f2937cc; }
.container { width: min(1120px, 92%); margin: 0 auto; }
.topbar { position: sticky; top: 0; backdrop-filter: blur(8px); z-index: 10; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; gap: 10px; }
.menu { display: flex; gap: 12px; flex-wrap: wrap; }
.menu a, .brand { text-decoration: none; color: var(--text); font-weight: 600; }
.card { background: var(--card); border-radius: 16px; padding: 18px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08); }
.glass { background: rgba(255,255,255,0.7); }
.btn { border: 0; border-radius: 12px; padding: 10px 16px; cursor: pointer; text-decoration: none; display: inline-block; }
.btn-primary { background: linear-gradient(135deg, var(--blue), var(--orange)); color: #fff; }
.btn-ghost { background: #e5e7eb; }
.hero { padding: 72px 0 32px; display: grid; gap: 20px; }
.hero h1 { font-family: Poppins, sans-serif; font-size: clamp(1.8rem, 4vw, 3rem); margin: 0; }
.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.footer { margin-top: 30px; padding: 20px 0 40px; text-align: center; }
.section-title { font-family: Poppins, sans-serif; margin-top: 30px; }
img[loading='lazy'] { opacity: 0; transition: opacity .3s ease; }
img.loaded { opacity: 1; }
@media (max-width: 768px) {
  .menu { font-size: .9rem; }
}