:root {
    --primary-color: #3c8dbc;
    --secondary-color: #f39c12;
    --accent-color: #00a65a;
    --bg-light: #f7f7f9;
    --bg-dark: #343a40;
    --text-color: #333;
    --spacing-small: 8px;
    --spacing-medium: 16px;
    --spacing-large: 32px;
}

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

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: var(--spacing-medium);
}

header {
    background-color: var(--primary-color);
    color: #fff;
    padding: var(--spacing-medium) 0;
}

header h1 {
    font-size: 24px;
}

nav {
    display: flex;
    justify-content: space-around;
    margin-top: var(--spacing-small);
}

nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 var(--spacing-small);
}

.hero {
    background-color: var(--secondary-color);
    color: #fff;
    padding: var(--spacing-large) 0;
    text-align: center;
}

.hero img {
    max-width: 100%;
    height: auto;
    margin-top: var(--spacing-medium);
    border-radius: 4px;
}

.bg-light {
    background-color: var(--bg-light);
}

.advantages, .about-preview, .testimonials, .faq-preview, .registration {
    padding: var(--spacing-large) 0;
}

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

.advantage, .testimonial {
    background: #fff;
    padding: var(--spacing-small);
    border-radius: 4px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.advantage h3, .faq-item h3, .testimonial blockquote {
    font-size: 18px;
    margin-bottom: var(--spacing-small);
}

.registration form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-small);
}

.registration input, .registration button {
    padding: var(--spacing-small);
    font-size: 16px;
}

.registration button {
    background-color: var(--accent-color);
    color: #fff;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.registration button:hover {
    background-color: var(--secondary-color);
}

.contact-info {
    text-align: center;
    padding: var(--spacing-large) 0;
}

footer {
    background-color: var(--bg-dark);
    color: #fff;
    padding: var(--spacing-medium) 0;
}

footer nav {
    display: flex;
    justify-content: space-around;
    margin-top: var(--spacing-small);
}

footer h4 {
    font-size: 16px;
    margin-bottom: var(--spacing-small);
}

.footer-links a {
    display: block;
    color: #fff;
    text-decoration: none;
    margin-bottom: var(--spacing-small);
}