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

:root {
    --primary-color: #5B8C5A;
    --primary-dark: #4A7349;
    --secondary-color: #8FBC8F;
    --accent-color: #E8F5E9;
    --text-color: #333333;
    --text-light: #666666;
    --background: #FAFAFA;
    --white: #FFFFFF;
    --border-color: #E0E0E0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-list a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

.nav-list a:hover {
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    transition: var(--transition);
}

.hero {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--white) 100%);
    padding: 150px 0 100px;
    text-align: center;
}

.hero h1 {
    font-size: 2.8rem;
    color: var(--primary-dark);
    margin-bottom: 20px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.about {
    padding: 80px 0;
    background: var(--white);
}

.about h2 {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 40px;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-content p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.topics {
    padding: 80px 0;
    background: var(--accent-color);
}

.topics h2 {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 40px;
}

.topics-list {
    list-style: none;
    max-width: 700px;
    margin: 0 auto;
}

.topics-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: var(--white);
    border-radius: var(--radius);
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.topics-list li:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-hover);
}

.topic-icon {
    font-size: 1.8rem;
}

.audience {
    padding: 80px 0;
    background: var(--white);
}

.audience h2 {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 40px;
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.audience-card {
    background: var(--background);
    padding: 30px;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.audience-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.audience-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 15px;
}

.audience-card h3 {
    color: var(--primary-dark);
    margin-bottom: 10px;
}

.audience-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.faq {
    padding: 80px 0;
    background: var(--accent-color);
}

.faq h2 {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 40px;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius);
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.faq-question {
    width: 100%;
    padding: 20px 25px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 25px 20px;
    color: var(--text-light);
}

.contact {
    padding: 80px 0;
    background: var(--white);
}

.contact h2 {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 15px;
}

.contact-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 40px;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--background);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(91, 140, 90, 0.1);
}

.form-checkbox {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.form-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 3px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.form-checkbox label {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.5;
    cursor: pointer;
}

.btn-submit {
    width: 100%;
    padding: 16px;
    font-size: 1.1rem;
}

.footer {
    background: var(--text-color);
    color: var(--white);
    padding: 50px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-brand .logo {
    color: var(--white);
    display: block;
    margin-bottom: 15px;
}

.footer-brand .disclaimer {
    font-size: 0.9rem;
    color: #AAAAAA;
    max-width: 500px;
    line-height: 1.6;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: #AAAAAA;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #444;
}

.footer-bottom p {
    font-size: 0.9rem;
    color: #AAAAAA;
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-list {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        box-shadow: var(--shadow);
    }

    .nav-list.active {
        display: flex;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .about,
    .topics,
    .audience,
    .faq,
    .contact {
        padding: 60px 0;
    }

    .contact-form {
        padding: 25px;
    }

    .footer-content {
        flex-direction: column;
    }

    .footer-links {
        flex-direction: column;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.7rem;
    }

    h2 {
        font-size: 1.6rem !important;
    }

    .btn {
        padding: 12px 24px;
    }
}