:root {
  --bg: #0f172a;
  --card: #111827;
  --panel: #0b1222;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #7c3aed;
  --accent-2: #22c55e;
  --border: #1f2937;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(circle at 20% 20%, rgba(124, 58, 237, 0.15), transparent 25%),
              radial-gradient(circle at 80% 0%, rgba(34, 197, 94, 0.12), transparent 22%),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

.top-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 1.75rem;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.logo { font-weight: 700; letter-spacing: 0.5px; }
.nav-links { display: flex; gap: 1rem; }
.nav-links a { padding: 0.4rem 0.75rem; border-radius: 999px; color: var(--muted); transition: background 0.2s, color 0.2s; }
.nav-links a:hover { background: rgba(255, 255, 255, 0.06); color: #fff; }

main { max-width: 1200px; margin: 0 auto; padding: 2rem 1.5rem 4rem; }

.hero { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; align-items: center; padding: 2rem; border: 1px solid var(--border); border-radius: 20px; background: linear-gradient(135deg, rgba(124, 58, 237, 0.15), rgba(34, 197, 94, 0.1)); box-shadow: var(--shadow); }
.hero-text h1 { font-size: clamp(2rem, 4vw, 3rem); margin: 0.35rem 0; }
.lede { color: var(--muted); max-width: 560px; }
.cta-row { display: flex; gap: 0.75rem; margin: 1rem 0; flex-wrap: wrap; }
.trust { color: var(--muted); font-size: 0.95rem; }

.hero-card { background: var(--card); border: 1px solid var(--border); padding: 1.25rem; border-radius: 16px; box-shadow: var(--shadow); position: relative; }
.hero-card h2 { margin-top: 0.2rem; }
.hero-card ul { padding-left: 1.1rem; color: var(--muted); }
.badge { position: absolute; right: 1rem; top: 1rem; background: var(--accent); color: #fff; padding: 0.25rem 0.75rem; border-radius: 999px; font-size: 0.85rem; }

.section { margin-top: 3rem; padding: 1.5rem; border-radius: 16px; border: 1px solid var(--border); background: var(--panel); box-shadow: var(--shadow); }
.section-header h2 { margin: 0.2rem 0; }
.section-header p { color: var(--muted); margin: 0.2rem 0 0; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.85rem; color: var(--accent-2); margin: 0; }

.table-wrapper { overflow-x: auto; }
.comparison { width: 100%; border-collapse: collapse; }
.comparison th, .comparison td { padding: 0.9rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.comparison th { text-align: left; color: var(--muted); font-weight: 600; }
.comparison tr:last-child td { border-bottom: none; }
.muted { color: var(--muted); margin: 0.4rem 0 0; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.button.primary { background: linear-gradient(135deg, var(--accent), #a855f7); color: #fff; box-shadow: 0 8px 20px rgba(124, 58, 237, 0.35); }
.button.primary:hover { transform: translateY(-1px); box-shadow: 0 12px 28px rgba(124, 58, 237, 0.45); }
.button.ghost { background: rgba(255, 255, 255, 0.06); color: #fff; border-color: rgba(255, 255, 255, 0.12); }
.button.full { width: 100%; }

.link-button { color: #cbd5e1; font-weight: 600; padding: 0.45rem 0.8rem; border: 1px solid var(--border); border-radius: 10px; background: rgba(255, 255, 255, 0.04); }
.link-button:hover { background: rgba(124, 58, 237, 0.15); color: #fff; }

.cards .card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 1rem; display: flex; flex-direction: column; gap: 0.65rem; box-shadow: var(--shadow); }
.card .tag { display: inline-block; padding: 0.35rem 0.65rem; border-radius: 999px; background: rgba(124, 58, 237, 0.15); color: #d8b4fe; font-size: 0.8rem; }
.card p { color: var(--muted); margin: 0; }
.card ul { padding-left: 1.1rem; color: var(--muted); margin: 0; }

.quiz { background: linear-gradient(135deg, rgba(124, 58, 237, 0.08), rgba(34, 197, 94, 0.08)); }
.quiz-form { display: grid; gap: 0.75rem; max-width: 520px; }
.quiz-form select { padding: 0.75rem; border-radius: 12px; border: 1px solid var(--border); background: #0b1222; color: #fff; }
.quiz-result { margin-top: 1rem; padding: 1rem; border-radius: 12px; border: 1px dashed var(--border); background: rgba(255, 255, 255, 0.03); }

.tips-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.tips-grid article { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1rem; box-shadow: var(--shadow); }

.seo { background: var(--card); }

.footer { margin-top: 2rem; padding: 2rem 1.5rem; border-top: 1px solid var(--border); color: var(--muted); background: #0b1222; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.footer h3 { margin-top: 0; color: #e5e7eb; }
.footer-meta { text-align: center; margin-top: 1rem; color: var(--muted); }

@media (max-width: 640px) {
  .top-bar { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  main { padding: 1.5rem 1rem 3rem; }
  .hero { padding: 1.5rem; }
}