:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --accent-color: #e74c3c;
  --text-color: #333;
  --light-bg: #f8f9fa;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  margin: 0;
  padding: 0;
}

a {
  color: inherit;
}

.site-nav {
  background: var(--primary-color);
  color: var(--white);
  padding: 0.85rem 2rem;
}

.site-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-nav .logo {
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.site-nav nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.site-nav nav a {
  color: var(--white);
  text-decoration: none;
  opacity: 0.9;
  font-size: 0.95rem;
}

.site-nav nav a:hover {
  opacity: 1;
  text-decoration: underline;
}

.hero {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  padding: 4rem 2rem;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: center;
  text-align: center;
}

.hero-brand {
  font-size: clamp(2.75rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
  line-height: 1.1;
}

.hero-text h2 {
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 600;
  margin: 0 0 1rem;
  line-height: 1.25;
}

.subheadline {
  font-size: 1.15rem;
  opacity: 0.92;
  max-width: 36rem;
  margin: 0 auto;
}

.problem-solution {
  padding: 4rem 2rem;
  background-color: var(--light-bg);
}

.problem-solution h2 {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  text-align: center;
}

.problem-solution p {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.features {
  padding: 4rem 2rem;
}

.features h2 {
  text-align: center;
  color: var(--primary-color);
  margin-bottom: 3rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.feature-card {
  background: var(--white);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-card i {
  font-size: 2.5rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.feature-card h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.beta {
  padding: 4rem 2rem;
  background-color: var(--light-bg);
  text-align: center;
}

.beta h2 {
  color: var(--primary-color);
  margin-bottom: 2rem;
}

.beta > p {
  max-width: 600px;
  margin: 0 auto;
}

.beta ul {
  list-style: none;
  max-width: 600px;
  margin: 2rem auto;
  padding-left: 0;
}

.beta li {
  margin-bottom: 1rem;
  padding-left: 2rem;
  position: relative;
  text-align: left;
}

.beta li:before {
  content: "✓";
  color: var(--accent-color);
  position: absolute;
  left: 0;
}

footer {
  background-color: var(--primary-color);
  color: var(--white);
  text-align: center;
  padding: 2rem;
}

footer a {
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 2px;
}

footer p {
  margin: 0.35rem 0;
}

@media (max-width: 768px) {
  .hero {
    padding: 3rem 1.25rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }
}