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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

.container-narrow {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #2c3e50;
    color: #fff;
    padding: 20px;
    z-index: 10000;
    display: none;
}

.cookie-banner.show {
    display: block;
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.cookie-content p {
    flex: 1;
    min-width: 250px;
}

.cookie-buttons {
    display: flex;
    gap: 10px;
}

.btn-accept,
.btn-reject {
    padding: 10px 24px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: background-color 0.3s;
}

.btn-accept {
    background: #27ae60;
    color: #fff;
}

.btn-accept:hover {
    background: #229954;
}

.btn-reject {
    background: #7f8c8d;
    color: #fff;
}

.btn-reject:hover {
    background: #6c7a7b;
}

.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: #2c3e50;
}

.nav {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav a {
    color: #2c3e50;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav a:hover {
    color: #3498db;
}

.ad-label {
    background: #f39c12;
    color: #fff;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

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

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background: #2c3e50;
    transition: all 0.3s;
}

.mobile-menu {
    display: none;
    flex-direction: column;
    background: #fff;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 999;
    padding: 20px;
    gap: 15px;
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    color: #2c3e50;
    text-decoration: none;
    font-weight: 500;
    padding: 10px;
    border-bottom: 1px solid #ecf0f1;
}

.ad-label-mobile {
    background: #f39c12;
    color: #fff;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    text-align: center;
}

.hero-section {
    position: relative;
    background: #000;
}

.hero-image-container {
    position: relative;
    height: 600px;
    overflow: hidden;
    background-color: #34495e;
}

.hero-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.7;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    background: linear-gradient(to right, rgba(0,0,0,0.7), rgba(0,0,0,0.3));
}

.hero-text {
    color: #fff;
    max-width: 600px;
}

.hero-text h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 20px;
    line-height: 1.5;
    opacity: 0.9;
}

.intro-section {
    padding: 80px 20px;
    background: #fff;
}

.intro-content h2 {
    font-size: 36px;
    line-height: 1.4;
    margin-bottom: 30px;
    color: #2c3e50;
}

.intro-content p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: #555;
}

.problem-section {
    padding: 80px 20px;
    background: #ecf0f1;
}

.split-layout {
    display: flex;
    gap: 60px;
    align-items: center;
}

.split-image {
    flex: 1;
    background-color: #95a5a6;
}

.split-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: 8px;
}

.split-text {
    flex: 1;
}

.split-text h2 {
    font-size: 36px;
    margin-bottom: 30px;
    color: #2c3e50;
}

.problem-list {
    list-style: none;
    margin-bottom: 30px;
}

.problem-list li {
    padding: 15px 0;
    padding-left: 30px;
    position: relative;
    font-size: 18px;
    color: #555;
    border-bottom: 1px solid #bdc3c7;
}

.problem-list li:before {
    content: "✗";
    position: absolute;
    left: 0;
    color: #e74c3c;
    font-size: 20px;
    font-weight: 700;
}

.problem-conclusion {
    font-size: 20px;
    font-weight: 600;
    color: #2c3e50;
    margin-top: 30px;
}

.insight-section {
    padding: 80px 20px;
    background: #3498db;
    color: #fff;
}

.insight-box h2 {
    font-size: 36px;
    margin-bottom: 30px;
    text-align: center;
}

.insight-box p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 40px;
    text-align: center;
}

.needs-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
}

.need-item {
    background: rgba(255,255,255,0.1);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    flex: 1;
    min-width: 200px;
}

.need-number {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 10px;
}

.need-item p {
    font-size: 16px;
    margin: 0;
}

.solution-section {
    padding: 80px 20px;
    background: #fff;
}

.section-title-center {
    font-size: 42px;
    text-align: center;
    margin-bottom: 60px;
    color: #2c3e50;
}

.features-flow {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.feature-card {
    display: flex;
    gap: 40px;
    align-items: center;
}

.feature-card.reverse {
    flex-direction: row-reverse;
}

.feature-card img {
    width: 50%;
    height: 400px;
    object-fit: cover;
    border-radius: 8px;
    background-color: #bdc3c7;
}

.feature-content {
    flex: 1;
}

.feature-content h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #2c3e50;
}

.feature-content p {
    font-size: 18px;
    line-height: 1.8;
    color: #555;
}

.trust-section {
    padding: 80px 20px;
    background: #f8f9fa;
}

.trust-section h2 {
    font-size: 36px;
    text-align: center;
    margin-bottom: 50px;
    color: #2c3e50;
}

.testimonial-flow {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.testimonial {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

.testimonial-text {
    font-size: 18px;
    line-height: 1.7;
    color: #555;
    font-style: italic;
    margin-bottom: 15px;
}

.testimonial-author {
    font-size: 16px;
    color: #7f8c8d;
    font-weight: 600;
}

.science-section {
    padding: 80px 20px;
    background: #fff;
}

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

.science-content p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: #555;
}

.citation {
    color: #3498db;
    text-decoration: none;
    font-weight: 600;
    margin-left: 2px;
}

.citation:hover {
    text-decoration: underline;
}

.pricing-section {
    padding: 80px 20px;
    background: #ecf0f1;
}

.pricing-grid {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.pricing-card {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    flex: 1;
    min-width: 300px;
    max-width: 380px;
    position: relative;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.pricing-card.featured {
    border: 3px solid #3498db;
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: #3498db;
    color: #fff;
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #2c3e50;
}

.price {
    font-size: 42px;
    font-weight: 700;
    color: #27ae60;
    margin-bottom: 30px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 30px;
}

.pricing-features li {
    padding: 12px 0;
    padding-left: 25px;
    position: relative;
    font-size: 16px;
    color: #555;
    border-bottom: 1px solid #ecf0f1;
}

.pricing-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: 700;
    font-size: 18px;
}

.btn-pricing {
    width: 100%;
    padding: 15px;
    background: #3498db;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-pricing:hover {
    background: #2980b9;
}

.form-section {
    padding: 80px 20px;
    background: #fff;
}

.form-section h2 {
    font-size: 36px;
    text-align: center;
    margin-bottom: 40px;
    color: #2c3e50;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

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

.form-group label {
    display: block;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #bdc3c7;
    border-radius: 4px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

.btn-submit {
    width: 100%;
    padding: 15px;
    background: #27ae60;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-submit:hover {
    background: #229954;
}

.final-cta-section {
    padding: 80px 20px;
    background: #2c3e50;
    color: #fff;
}

.final-cta-box {
    text-align: center;
}

.final-cta-box h2 {
    font-size: 38px;
    margin-bottom: 20px;
}

.final-cta-box p {
    font-size: 20px;
    line-height: 1.6;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn-final {
    padding: 18px 40px;
    background: #3498db;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-final:hover {
    background: #2980b9;
}

.disclaimer-section {
    padding: 60px 20px;
    background: #f8f9fa;
}

.disclaimer-box {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid #f39c12;
}

.disclaimer-box h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #2c3e50;
}

.disclaimer-box p {
    font-size: 15px;
    line-height: 1.7;
    color: #555;
}

.footer {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 60px 20px 20px;
}

.footer-grid {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.footer-col {
    flex: 1;
    min-width: 200px;
}

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #fff;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col a {
    color: #ecf0f1;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: #3498db;
}

.footer-col p {
    color: #bdc3c7;
    font-size: 14px;
}

.footer-references {
    border-top: 1px solid #34495e;
    padding-top: 30px;
    margin-bottom: 30px;
}

.footer-references h4 {
    font-size: 16px;
    margin-bottom: 15px;
    color: #fff;
}

.footer-references ol {
    padding-left: 20px;
}

.footer-references li {
    margin-bottom: 8px;
    font-size: 14px;
}

.footer-references a {
    color: #3498db;
    text-decoration: none;
}

.footer-references a:hover {
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
}

.footer-bottom p {
    font-size: 14px;
    color: #95a5a6;
}

@media (max-width: 992px) {
    .nav {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .split-layout {
        flex-direction: column;
    }

    .split-image img {
        height: 300px;
    }

    .feature-card,
    .feature-card.reverse {
        flex-direction: column;
    }

    .feature-card img {
        width: 100%;
        height: 300px;
    }

    .hero-text h1 {
        font-size: 36px;
    }

    .section-title-center {
        font-size: 32px;
    }
}

@media (max-width: 768px) {
    .hero-image-container {
        height: 400px;
    }

    .hero-text h1 {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .intro-content h2 {
        font-size: 28px;
    }

    .split-text h2 {
        font-size: 28px;
    }

    .needs-grid {
        flex-direction: column;
    }

    .pricing-grid {
        flex-direction: column;
        align-items: center;
    }

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