:root {
  --primary: #0f766e;
  --primary-hover: #115e59;
  --primary-light: #f0fdfa;
  --accent: #f59e0b;
  --dark: #0f172a;
  --gray-600: #475569;
  --gray-200: #e2e8f0;
  --gray-50: #f8fafc;
  --radius: 12px;
  --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--dark);
  background: #ffffff;
  line-height: 1.6;
}

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
}

header.navbar {
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--gray-200);
}
.brand {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.brand-badge {
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  padding: 2px 8px;
  font-size: 14px;
}
.nav-links a {
  margin-left: 20px;
  color: var(--gray-600);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}
.nav-links a:hover { color: var(--primary); }

.hero {
  padding: 70px 0 50px;
  text-align: center;
  background: radial-gradient(circle at top, var(--primary-light) 0%, #fff 70%);
}
.pill-badge {
  display: inline-block;
  background: #ccfbf1;
  color: #0f766e;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 700;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
  color: #042f2e;
}
.hero h1 span { color: var(--primary); }
.hero p.lead {
  font-size: 17px;
  color: var(--gray-600);
  max-width: 680px;
  margin: 0 auto 30px;
}

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 9px;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  border: 1px solid var(--primary-hover);
  box-shadow: 0 4px 14px rgba(15, 118, 110, 0.3);
}
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary {
  background: #fff;
  color: var(--dark);
  border: 1px solid var(--gray-200);
  margin-left: 10px;
}
.btn-secondary:hover { background: var(--gray-50); }

.features {
  padding: 60px 0;
}
.grid3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 36px;
}
.f-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
  background: #fff;
  transition: transform 0.2s, box-shadow 0.2s;
}
.f-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}
.f-icon {
  font-size: 28px;
  margin-bottom: 12px;
}
.f-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: #0f172a;
}
.f-card p {
  color: var(--gray-600);
  font-size: 14px;
}

.pricing {
  padding: 60px 0;
  background: var(--gray-50);
}
.pricing-header {
  text-align: center;
  margin-bottom: 40px;
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 24px;
  align-items: stretch;
}
.p-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
}
.p-card.featured {
  border: 2px solid var(--primary);
  box-shadow: 0 12px 30px rgba(15, 118, 110, 0.15);
}
.p-tag {
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--primary);
  color: #fff;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}
.p-card h3 { font-size: 20px; margin-bottom: 8px; }
.p-price { font-size: 34px; font-weight: 800; color: #042f2e; margin-bottom: 12px; }
.p-price span { font-size: 14px; color: var(--gray-600); font-weight: 400; }
.p-card ul {
  list-style: none;
  margin: 20px 0;
  flex-grow: 1;
}
.p-card ul li {
  font-size: 13.5px;
  color: #334155;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.p-card ul li::before {
  content: "✓";
  color: #10b981;
  font-weight: 800;
}

.install-guide {
  padding: 60px 0;
}
.guide-box {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 20px;
}
.guide-box ol {
  margin-left: 20px;
  color: #334155;
}
.guide-box ol li {
  margin-bottom: 10px;
  font-size: 14.5px;
}

footer {
  padding: 40px 0;
  border-top: 1px solid var(--gray-200);
  text-align: center;
  font-size: 13px;
  color: #64748b;
}

@media (max-width: 600px) {
  .hero h1 { font-size: 30px; }
  .nav-links { display: none; }
}