:root {
    --primary-color: #0d3b66;
    --secondary-color: #faf0ca;
    --accent-color: #f4d35e;
    --bg-light: #ffffff;
    --bg-dark: #274c77;
    --text-color: #333333;
    --spacing-small: 0.5rem;
    --spacing-medium: 1rem;
    --spacing-large: 2rem;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--bg-light);
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-medium);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--primary-color);
    color: var(--bg-light);
    padding: var(--spacing-medium);
}

header h1 {
    font-size: 1.5rem;
}

nav a {
    color: var(--bg-light);
    margin-left: var(--spacing-small);
    text-decoration: none;
    font-weight: bold;
}

main {
    margin-top: var(--spacing-large);
}

section {
    padding: var(--spacing-large) 0;
    margin-top: var(--spacing-medium);
}

.hero {
    background-color: var(--secondary-color);
    background-size: cover;
    padding: var(--spacing-large);
    text-align: center;
    color: var(--primary-color);
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-medium);
}

.advantages, .about-preview, .testimonials, .faq-preview, .registration {
    background-color: var(--bg-light);
}

.advantages h2, .about-preview h2, .testimonials h2, .faq-preview h2, .registration h2 {
    color: var(--primary-color);
    text-align: center;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-medium);
    margin-top: var(--spacing-medium);
}

.advantage-block, .testimonial {
    background-color: var(--secondary-color);
    padding: var(--spacing-medium);
    border-radius: var(--spacing-small);
}

.advantage-block h3 {
    margin-bottom: var(--spacing-small);
}

.adv-image, .about-image, .testimonial-image {
    width: 100%;
    max-width: 400px;
    margin-top: var(--spacing-medium);
    border-radius: var(--spacing-small);
}

.about-preview a, .faq-preview a, .registration form button {
    display: block;
    margin-top: var(--spacing-medium);
    text-decoration: none;
    color: var(--accent-color);
    text-align: center;
}

.testimonial-cards {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-medium);
    justify-content: space-around;
}

blockquote {
    border-left: 0.25rem solid var(--primary-color);
    padding-left: var(--spacing-small);
    font-style: italic;
}

.registration form {
    max-width: 400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

.registration label {
    margin-top: var(--spacing-small);
    margin-bottom: var(--spacing-small);
}

.registration input {
    padding: var(--spacing-small);
    border: 1px solid var(--primary-color);
    border-radius: var(--spacing-small);
}

.consent {
    display: flex;
    align-items: center;
    margin-top: var(--spacing-small);
}

.consent input {
    margin-right: var(--spacing-small);
}

.contact-details p {
    margin-top: var(--spacing-small);
}

footer {
    background-color: var(--primary-color);
    color: var(--bg-light);
    padding: var(--spacing-medium) 0;
    text-align: center;
    margin-top: var(--spacing-large);
}

footer nav div {
    margin: var(--spacing-small) 0;
}

footer nav a {
    color: var(--bg-light);
    margin-left: var(--spacing-small);
    text-decoration: none;
}