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

:root {
  --blue-tree-blue: #324f9f;
  --blue-tree-light: #4a6bb8;
  --white: #ffffff;
  --off-white: #fafbfc;
  --light-gray: #f5f7fa;
  --text-dark: #2c3e50;
  --text-muted: #6c757d;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  line-height: 1.7;
  color: var(--text-dark);
  background: linear-gradient(135deg, var(--off-white) 0%, var(--white) 100%);
  min-height: 100vh;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

header {
  text-align: center;
  padding: 4rem 0 3rem;
  margin-bottom: 4rem;
  position: relative;
}

header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, var(--blue-tree-blue), var(--blue-tree-light));
  border-radius: 2px;
}

.main-logo {
  max-width: 450px;
  width: 100%;
  height: auto;
  margin-bottom: 1.5rem;
  display: inline-block;
  filter: drop-shadow(0 2px 8px rgba(50, 79, 159, 0.15));
  transition: transform 0.3s ease;
}

.main-logo:hover {
  transform: scale(1.02);
}

h1 {
  font-size: 3rem;
  color: var(--blue-tree-blue);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.subtitle {
  font-size: 1.3rem;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.5px;
}

h2 {
  font-size: 2rem;
  color: var(--blue-tree-blue);
  margin-bottom: 1.5rem;
  font-weight: 600;
  text-align: center;
  position: relative;
  padding-bottom: 1rem;
}

h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--blue-tree-light);
  border-radius: 2px;
}

section {
  margin-bottom: 4rem;
  padding: 3rem 2.5rem;
  background-color: var(--white);
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(50, 79, 159, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

section:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(50, 79, 159, 0.12);
}

.about {
  background: linear-gradient(135deg, var(--white) 0%, var(--light-gray) 100%);
}

.about-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2.5rem;
  align-items: center;
}

.logo-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-top: 0.5rem;
}

.ryt-logo {
  width: 180px;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
}

.ryt-logo:hover {
  transform: rotate(5deg) scale(1.05);
}

.about-content {
  flex: 1;
}

.about-content p {
  font-size: 1.15rem;
  margin-bottom: 1.25rem;
  color: var(--text-dark);
  line-height: 1.8;
  text-align: left;
}

.about-content p:last-child {
  margin-bottom: 0;
}

.services {
  text-align: center;
}

.classes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin: 2rem 0;
}

.class-card {
  background: var(--white);
  border: 2px solid var(--light-gray);
  border-radius: 12px;
  padding: 2.5rem 1.5rem 2rem;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.class-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--blue-tree-blue), var(--blue-tree-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
}

.class-icon i {
  font-size: 28px;
  color: var(--white);
}

.class-card:hover .class-icon {
  transform: scale(1.1) rotate(5deg);
}

.class-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blue-tree-blue), var(--blue-tree-light));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.class-card:hover::before {
  transform: scaleX(1);
}

.class-card:hover {
  border-color: var(--blue-tree-blue);
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(50, 79, 159, 0.15);
}

.class-card h3 {
  font-size: 1.5rem;
  color: var(--blue-tree-blue);
  margin-bottom: 1rem;
  font-weight: 600;
}

.class-card p {
  font-size: 1.05rem;
  color: var(--text-dark);
  line-height: 1.7;
  margin: 0;
}

.contact-note {
  font-style: italic;
  color: var(--blue-tree-light);
  font-size: 1.15rem;
  margin-top: 2rem;
  font-weight: 500;
}

.contact {
  background: linear-gradient(135deg, var(--blue-tree-blue) 0%, var(--blue-tree-light) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.contact h2 {
  color: var(--white);
  text-align: center;
}

.contact h2::after {
  background: var(--white);
}

.contact-info {
  max-width: 500px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.contact-info p {
  margin-bottom: 1rem;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.contact-info i {
  font-size: 1.2rem;
  width: 24px;
  text-align: center;
  opacity: 0.9;
}

.contact-info strong {
  min-width: 90px;
  font-weight: 600;
}

.contact-info a {
  color: var(--white);
  text-decoration: none;
  border-bottom: 2px solid rgba(255, 255, 255, 0.4);
  transition: all 0.3s ease;
  padding-bottom: 2px;
}

.contact-info a:hover {
  border-bottom-color: var(--white);
  letter-spacing: 0.5px;
}

.social {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.3);
}

footer {
  text-align: center;
  padding: 3rem 0 2rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

@media (max-width: 768px) {
  header {
    padding: 3rem 0 2.5rem;
    margin-bottom: 3rem;
  }

  h1 {
    font-size: 2.25rem;
  }

  .subtitle {
    font-size: 1.15rem;
  }

  h2 {
    font-size: 1.65rem;
  }

  section {
    padding: 2rem 1.5rem;
    margin-bottom: 3rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    text-align: center;
  }

  .logo-container {
    padding-top: 0;
  }

  .ryt-logo {
    width: 140px;
    margin: 0 auto;
  }

  .main-logo {
    max-width: 300px;
  }

  .about-content p {
    font-size: 1.05rem;
    text-align: center;
  }

  .classes-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .class-card {
    padding: 1.75rem 1.25rem;
  }

  .class-card h3 {
    font-size: 1.35rem;
  }

  .class-card p {
    font-size: 1rem;
  }

  .contact-info p {
    font-size: 1rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .contact-info strong {
    min-width: auto;
  }
}

@media (min-width: 769px) {
  .container {
    padding: 0 2rem;
  }
}