* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Inter, system-ui, Arial, sans-serif;
  background: #f9fafb;
  color: #111;
  line-height: 1.6;
}

section {
  max-width: 900px;
  margin: auto;
  padding: 80px 20px;
}

.hero {
  text-align: center;
}

.hero h1 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 20px;
}

.subtitle {
  font-size: 18px;
  color: #555;
  margin-bottom: 30px;
}

.block h2 {
  font-size: 28px;
  margin-bottom: 20px;
}

.block p {
  font-size: 16px;
  margin-bottom: 15px;
}

.block ul {
  margin: 20px 0;
  padding-left: 20px;
}

.block li {
  margin-bottom: 8px;
}

.alt {
  background: #ffffff;
  border-radius: 12px;
}

.muted {
  color: #666;
  font-size: 14px;
}

.btn {
  display: inline-block;
  background: #4f46e5;
  color: white;
  padding: 14px 26px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
}

.btn:hover {
  opacity: 0.9;
}

.form form {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form input {
  padding: 14px;
  font-size: 15px;
  border-radius: 6px;
  border: 1px solid #ddd;
}

.signals {
  list-style: none;
  padding-left: 0;
}

.signals li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.signals svg {
  width: 18px;
  height: 18px;
  stroke: #4f46e5;
  stroke-width: 1.5;
  fill: none;
}

.dashboard-preview {
  margin-top: 30px;
  text-align: center;
}

.dashboard-preview img {
  max-width: 100%;
  border-radius: 12px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}