html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  line-height: 1.7;
  color: #1c2d2a;
  background: linear-gradient(180deg, #f2f7f4 0%, #edf4f0 100%);
  animation: fadeInBody 0.7s ease-out;
}

@keyframes fadeInBody {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.topbar {
  width: 100%;
  background: linear-gradient(90deg, #d0d0d0 0%, #d9d9d9 35%, #c7c7c7 100%);
  padding: 18px 20px 16px;
  box-sizing: border-box;
  border-bottom: 2px solid #6ae66a;
  box-shadow: 0 4px 14px rgba(46, 120, 72, 0.18);
}

.logo {
  display: block;
  max-width: 320px;
  height: auto;
  margin: 0 auto;
  filter: drop-shadow(0 6px 12px rgba(17, 56, 38, 0.12));
  transition: transform 0.3s ease, filter 0.3s ease;
}

.logo:hover {
  transform: scale(1.02);
  filter: drop-shadow(0 8px 16px rgba(17, 56, 38, 0.18));
}

.content {
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 20px 70px;
}

.content p,
.content li,
.content i,
.content strong {
  font-size: 1.02rem;
}

.content p {
  margin: 0 0 1rem;
}

.content h2,
.content h3 {
  animation: fadeInUp 0.5s ease-out both;
}

.content h2 {
  margin-top: 2.2rem;
  margin-bottom: 1rem;
  padding: 0.7rem 1rem 0.7rem 0.9rem;
  font-size: clamp(1.45rem, 2vw, 2.05rem);
  line-height: 1.2;
  color: #0d4a3f;
  background: linear-gradient(90deg, rgba(109, 214, 119, 0.12), rgba(109, 214, 119, 0.02));
  border-left: 5px solid #41b86b;
  border-radius: 10px 10px 10px 0;
  box-shadow: 0 6px 12px rgba(23, 52, 38, 0.06);
}

.content h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.8rem;
  font-size: clamp(1.1rem, 1.4vw, 1.45rem);
  color: #0f6c53;
  position: relative;
  padding-left: 0.9rem;
}

.content h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15rem;
  width: 4px;
  height: 1.1em;
  border-radius: 999px;
  background: linear-gradient(180deg, #6ae66a, #2ea95b);
}

.content strong {
  color: #0f573d;
}

.content a {
  color: #127a5f;
  text-decoration: none;
  transition: color 0.2s ease, transform 0.2s ease;
}

.content a:hover {
  color: #0f5a45;
  text-decoration: underline;
}

.content code {
  background: #eafaf1;
  color: #0d6756;
  border: 1px solid #d5f2df;
  border-radius: 6px;
  padding: 0.15rem 0.45rem;
  font-size: 0.92em;
}

.content pre {
  background: linear-gradient(135deg, #112626, #16352f);
  color: #effaf6;
  border-left: 4px solid #71d17a;
  border-radius: 12px;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  box-shadow: 0 10px 20px rgba(14, 35, 29, 0.12);
  margin: 1rem 0;
}

.content ul,
.content ol {
  padding-left: 1.4rem;
  margin: 1rem 0 1.3rem;
}

.content li {
  margin-bottom: 0.45rem;
  color: #25413d;
}

.content li::marker {
  color: #1da76a;
  font-weight: bold;
}

.content i {
  display: inline-block;
  background: rgba(111, 211, 151, 0.12);
  border-left: 3px solid #46b66f;
  padding: 0.5rem 0.8rem;
  border-radius: 8px;
  color: #2e4a46;
  margin: 0.5rem 0 1rem;
}

.intro-panel {
  background: linear-gradient(135deg, rgba(29, 129, 93, 0.08), rgba(82, 184, 125, 0.03));
  border: 1px solid rgba(31, 112, 76, 0.12);
  border-radius: 16px;
  padding: 1.2rem 1.3rem;
  box-shadow: 0 10px 20px rgba(28, 45, 42, 0.04);
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.7s ease-out;
}

.lead {
  font-size: 1.08rem;
  color: #203a37;
  font-weight: 600;
}

.nav-menu {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  background: linear-gradient(90deg, #0d4a3f 0%, #12604f 55%, #0d4a3f 100%);
  border-radius: 12px;
  padding: 0.6rem 0.8rem;
  margin-bottom: 1.8rem;
  box-shadow: 0 8px 18px rgba(14, 35, 29, 0.18);
}

.nav-menu a {
  color: #eafaf1;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 0.5rem 1.1rem;
  border-radius: 8px;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-menu a:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
  text-decoration: none;
  transform: translateY(-1px);
}

.content h2[id] {
  scroll-margin-top: 4.5rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
  margin: 1.2rem 0 1.5rem;
}

.pricing-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.75), rgba(152, 229, 174, 0.12));
  border: 1px solid rgba(55, 159, 97, 0.18);
  border-radius: 14px;
  padding: 1.2rem 1.1rem;
  box-shadow: 0 8px 18px rgba(25, 60, 46, 0.06);
  text-align: center;
}

.pricing-card h4 {
  margin: 0 0 0.4rem;
  color: #0f6c53;
  font-size: 1.15rem;
}

.pricing-card .price {
  font-size: 1.6rem;
  font-weight: 700;
  color: #0d4a3f;
  margin: 0.3rem 0 0.6rem;
}

.pricing-card .price span {
  font-size: 0.85rem;
  font-weight: 400;
  color: #4a6a63;
}

.download-button {
  display: inline-block;
  background: linear-gradient(90deg, #2ea95b, #41b86b);
  color: #ffffff !important;
  font-weight: 700;
  padding: 0.75rem 1.4rem;
  border-radius: 10px;
  box-shadow: 0 8px 18px rgba(23, 52, 38, 0.18);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.download-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(23, 52, 38, 0.24);
  text-decoration: none !important;
}

.content .highlight {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(152, 229, 174, 0.12));
  border: 1px solid rgba(55, 159, 97, 0.18);
  border-left: 4px solid #31a65f;
  border-radius: 12px;
  padding: 0.9rem 1rem;
  box-shadow: 0 8px 18px rgba(25, 60, 46, 0.05);
}

@media (max-width: 768px) {
  .content {
    padding-left: 16px;
    padding-right: 16px;
  }

  .topbar {
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .logo {
    max-width: 240px;
  }

  .nav-menu {
    gap: 0.3rem;
  }

  .nav-menu a {
    padding: 0.45rem 0.7rem;
    font-size: 0.9rem;
  }
}