html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f9f9f9;
  color: #111;
}
.footer {
  background: #f2f2f2;
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  border-top: 1px solid #ddd;
}
.footer-text {
  margin: 0;
  color: #444;
}
.footer-links a {
  margin-left: 1rem;
  color: #444;
  text-decoration: none;
  font-weight: 500;
}
.footer-links a:hover {
  text-decoration: underline;
}
.illustration-img {
  width: 320px;
  height: 320px;
  object-fit: contain;
  border-radius: 16px;
  display: block;
  margin: auto;
}
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: white;
  border-bottom: 1px solid #ddd;
}
.logo {
  font-weight: bold;
  font-size: 1.2rem;
}
.nav a {
  margin-left: 1rem;
  text-decoration: none;
  color: #444;
}
.nav a:hover {
  text-decoration: underline;
}
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
  padding: 3rem 2rem;
}
.hero-text h1 span {
  color: black;
}
.hero-buttons {
  margin-top: 1rem;
  display: flex;
  gap: 1rem;
}
.note {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: #555;
}
.details-link {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: #0077cc;
  text-decoration: none;
}
.details-link:hover {
  text-decoration: underline;
}
.illustration-box {
  width: 300px;
  height: 300px;
  background: #e5e7eb;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  font-size: 1.2rem;
  margin: auto;
}

/* SECTIONS */
.section {
  padding: 3rem 2rem;
}
.section h2 {
  margin-bottom: 1.5rem;
}
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}
.feature-card,
.security-card {
  background: white;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 0 20px black; /* темнее и шире */
  transition: transform 0.2s;
}
.feature-card:hover,
.security-card:hover {
  transform: scale(1.03);
}
.card {
  background: white;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 0 35px rgba(0, 0, 0, 0.25);
  transition: transform 0.2s;
}
.card:hover {
  transform: scale(1.03);
}
.emoji {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

/* INTERFACE */
.interface-box {
  display: flex;
  justify-content: center;
  align-items: center;
  background: #eee;
  border-radius: 12px;
  padding: 1rem;
  max-width: fit-content;
  margin: auto;
}

/* CTA */
.cta {
  background: linear-gradient(to right, #000, #444);
  color: white;
  padding: 2rem;
}
.cta-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}
.cta-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}
.btn-primary {
  background: black;
  color: white;
  border: none;
  padding: 0.9rem 1.5rem;
  border-radius: 10px;
  font-weight: bold;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: transform 0.2s, background 0.2s;
}
.btn-primary:hover {
  transform: scale(1.05);
  background: #222;
}
.btn-docs {
  margin-top: 1rem;
  background: black;
  color: white;
  border: none;
  padding: 0.9rem 1.6rem; /* чуть больше, чем btn-primary */
  border-radius: 10px;
  font-weight: bold;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: transform 0.2s;
}
.btn-docs:hover {
  transform: scale(1.05);
}
.btn-secondary {
  border: 1px solid #333;
}