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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.advertorial-banner {
    background: #ff4444;
    color: white;
    text-align: center;
    padding: 8px;
    font-size: 12px;
    font-weight: bold;
}

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

/* Header */
.header {
    background: #fff;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

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

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

.nav a {
    text-decoration: none;
    color: #666;
    font-weight: 500;
}

.search-icon {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background: #fff;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-left h1 {
    font-size: 48px;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 30px;
    line-height: 1.2;
}

.hero-features {
    margin-bottom: 30px;
}

.hero-feature {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.checkmark {
    color: #27ae60;
    font-size: 20px;
    margin-right: 15px;
}

.cta-button {
    background: #e74c3c;
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 5px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background 0.3s;
}

.cta-button:hover {
    background: #c0392b;
}

.no-card-text {
    font-size: 14px;
    color: #666;
    margin-top: 10px;
}

.book-image {
    text-align: center;
}

.book-image img {
    max-width: 300px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* Intro Section */
.intro-section {
    padding: 60px 0;
    text-align: center;
    background: #fff;
}

.intro-text {
    font-size: 18px;
    color: #666;
    margin-bottom: 20px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.read-more-link {
    color: #e74c3c;
    text-decoration: underline;
    font-size: 16px;
}

/* Book Features Section */
.book-features {
    padding: 80px 0;
    background: #fff;
}

.book-features-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.features-right h2 {
    font-size: 32px;
    color: #2c3e50;
    margin-bottom: 30px;
}

.feature-item {
    margin-bottom: 30px;
}

.feature-item h3 {
    font-size: 20px;
    color: #2c3e50;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.feature-icon {
    width: 20px;
    height: 20px;
    background: #e74c3c;
    border-radius: 50%;
    margin-right: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
}

.feature-item p {
    color: #666;
    margin-left: 35px;
}

/* Chapters Section */
.chapters-section {
    padding: 80px 0;
    background: #fff;
}

.section-title {
    text-align: center;
    font-size: 36px;
    color: #2c3e50;
    margin-bottom: 20px;
}

.section-subtitle {
    text-align: center;
    font-size: 16px;
    color: #666;
    margin-bottom: 50px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.chapters-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.chapter-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
}

.chapter-card h3 {
    font-size: 20px;
    color: #2c3e50;
    margin-bottom: 15px;
}

.chapter-card p {
    color: #666;
    font-size: 14px;
}

/* Things You Will Learn Section */
.learn-section {
    padding: 80px 0;
    background: #2c3e50;
    color: white;
}

.learn-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.learn-card {
    background: white;
    color: #333;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
}

.learn-card .checkmark {
    color: #8e44ad;
    font-size: 24px;
    margin-bottom: 15px;
}

.learn-card h3 {
    font-size: 18px;
    color: #2c3e50;
    margin-bottom: 15px;
}

.learn-card p {
    color: #666;
    font-size: 14px;
}

/* Who This Book Is For Section */
.audience-section {
    padding: 80px 0;
    background: #fff;
}

.audience-cards {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 50px;
}

.audience-card {
    text-align: center;
    padding: 20px;
}

.audience-icon {
    width: 60px;
    height: 60px;
    background: #e74c3c;
    border-radius: 50%;
    margin: 0 auto 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.audience-card h3 {
    font-size: 16px;
    color: #2c3e50;
}

.audience-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.stats-image {
    text-align: center;
}

.stats-image img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 5px;
}

.stat-text {
    font-size: 14px;
    color: #666;
}

/* Get Free Chapter Section */
.free-chapter-section {
    padding: 80px 0;
    background: #34495e;
    color: white;
    text-align: center;
}

.free-chapter-section h2 {
    font-size: 32px;
    margin-bottom: 30px;
}

.form-container {
    max-width: 400px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
}

.purple-button {
    background: #8e44ad;
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 5px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background 0.3s;
}

.purple-button:hover {
    background: #7d3c98;
}

/* Reviews Section */
.reviews-section {
    padding: 80px 0;
    background: #fff;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.review-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    position: relative;
}

.review-card.middle {
    border: 2px solid #8e44ad;
    transform: scale(1.05);
}

.stars {
    color: #f39c12;
    font-size: 20px;
    margin-bottom: 15px;
}

.review-text {
    font-style: italic;
    margin-bottom: 20px;
    color: #666;
}

.reviewer {
    display: flex;
    align-items: center;
    justify-content: center;
}

.reviewer img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 15px;
}

.reviewer-name {
    font-weight: bold;
    color: #2c3e50;
}

.review-dots {
    text-align: center;
    margin-top: 30px;
}

.dot {
    width: 10px;
    height: 10px;
    background: #ddd;
    border-radius: 50%;
    display: inline-block;
    margin: 0 5px;
}

.dot.active {
    background: #8e44ad;
}

/* About Author Section */
.author-section {
    padding: 80px 0;
    background: #fff;
}

.author-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    align-items: center;
}

.author-image {
    position: relative;
}

.author-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 10px;
}

.author-border {
    position: absolute;
    top: -10px;
    left: -10px;
    width: 20px;
    height: 20px;
    background: #f39c12;
}

.author-border.purple {
    background: #8e44ad;
    top: -10px;
    left: -10px;
}

.author-info h2 {
    font-size: 32px;
    color: #2c3e50;
    margin-bottom: 20px;
}

.author-info p {
    color: #666;
    margin-bottom: 15px;
}

.author-features {
    margin-top: 20px;
}

.author-feature {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

/* Pricing Section */
.pricing-section {
    padding: 80px 0;
    background: #fff;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.pricing-card {
    background: #f8f9fa;
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    position: relative;
}

.pricing-card.featured {
    border: 2px solid #8e44ad;
    transform: scale(1.05);
}

.price {
    font-size: 36px;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 10px;
}

.plan-name {
    font-size: 20px;
    color: #666;
    margin-bottom: 30px;
}

.pricing-features {
    margin-bottom: 30px;
}

.pricing-feature {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

/* FAQ Section */
.faq-section {
    padding: 80px 0;
    background: #fff;
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 50px;
}

.faq-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.faq-item:hover {
    background: #e9ecef;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
    color: #2c3e50;
}

.faq-arrow {
    color: #666;
}

.view-all-button {
    text-align: center;
    margin-top: 30px;
}

/* Contact Section */
.contact-section {
    padding: 80px 0;
    background: #fff;
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
}

.contact-info {
    text-align: center;
    margin-top: 20px;
    color: #666;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #ecf0f1;
}

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

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

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: white;
}

.footer-section p {
    color: #bdc3c7;
    margin-bottom: 10px;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-icon {
    width: 30px;
    height: 30px;
    background: #34495e;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-dot {
    width: 20px;
    height: 20px;
    background: #e74c3c;
    border-radius: 50%;
}

.disclosures {
    border-top: 1px solid #34495e;
    padding-top: 20px;
    margin-top: 40px;
}

.disclosures h4 {
    color: #ecf0f1;
    margin-bottom: 15px;
}

.disclosures p {
    font-size: 12px;
    color: #bdc3c7;
    margin-bottom: 10px;
    line-height: 1.4;
}

.research-links {
    margin-top: 20px;
}

.research-links h4 {
    color: #ecf0f1;
    margin-bottom: 15px;
}

.research-links ul li a {
    color: #3498db;
}

/* Mobile Styles */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    /* Header */
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .logo {
        font-size: 20px;
    }
    
    .nav {
        display: flex;
        gap: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .nav a {
        font-size: 14px;
    }
    
    /* Hero Section */
    .hero {
        padding: 40px 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .hero-left h1 {
        font-size: 28px;
        line-height: 1.3;
        margin-bottom: 20px;
    }
    
    .hero-features {
        margin-bottom: 20px;
    }
    
    .hero-feature {
        justify-content: center;
        margin-bottom: 10px;
    }
    
    .cta-button {
        padding: 12px 25px;
        font-size: 16px;
    }
    
    .book-image img {
        max-width: 250px;
    }
    
    /* Intro Section */
    .intro-section {
        padding: 40px 0;
    }
    
    .intro-text {
        font-size: 16px;
        padding: 0 10px;
    }
    
    /* Book Features */
    .book-features {
        padding: 40px 0;
    }
    
    .book-features-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .features-right h2 {
        font-size: 24px;
        margin-bottom: 20px;
    }
    
    .feature-item {
        margin-bottom: 20px;
    }
    
    .feature-item h3 {
        font-size: 18px;
        justify-content: center;
    }
    
    .feature-item p {
        margin-left: 0;
        text-align: center;
    }
    
    /* Chapters Section */
    .chapters-section {
        padding: 40px 0;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 15px;
    }
    
    .section-subtitle {
        font-size: 14px;
        margin-bottom: 30px;
        padding: 0 10px;
    }
    
    .chapters-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .chapter-card {
        padding: 20px;
    }
    
    .chapter-card h3 {
        font-size: 18px;
        margin-bottom: 10px;
    }
    
    .chapter-card p {
        font-size: 13px;
    }
    
    /* Learn Section */
    .learn-section {
        padding: 40px 0;
    }
    
    .learn-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 30px;
    }
    
    .learn-card {
        padding: 20px;
    }
    
    .learn-card h3 {
        font-size: 16px;
    }
    
    .learn-card p {
        font-size: 13px;
    }
    
    /* Audience Section */
    .audience-section {
        padding: 40px 0;
    }
    
    .audience-cards {
        flex-direction: column;
        gap: 20px;
        margin-bottom: 30px;
    }
    
    .audience-card {
        padding: 15px;
    }
    
    .audience-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
    
    .audience-stats {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .stats-image img {
        width: 150px;
        height: 150px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .stat-text {
        font-size: 12px;
    }
    
    /* Free Chapter Section */
    .free-chapter-section {
        padding: 40px 0;
    }
    
    .free-chapter-section h2 {
        font-size: 24px;
        margin-bottom: 20px;
    }
    
    .form-container {
        max-width: 300px;
        padding: 0 15px;
    }
    
    .form-group input {
        padding: 12px;
        font-size: 14px;
    }
    
    .purple-button {
        padding: 12px 25px;
        font-size: 16px;
    }
    
    /* Reviews Section */
    .reviews-section {
        padding: 40px 0;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 30px;
    }
    
    .review-card {
        padding: 20px;
    }
    
    .review-card.middle {
        transform: none;
        border: 1px solid #8e44ad;
    }
    
    .review-text {
        font-size: 14px;
    }
    
    .reviewer img {
        width: 35px;
        height: 35px;
    }
    
    /* Author Section */
    .author-section {
        padding: 40px 0;
    }
    
    .author-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .author-image img {
        height: 300px;
    }
    
    .author-info h2 {
        font-size: 24px;
        margin-bottom: 15px;
    }
    
    .author-info p {
        font-size: 14px;
        margin-bottom: 10px;
    }
    
    .author-feature {
        justify-content: center;
    }
    
    /* Pricing Section */
    .pricing-section {
        padding: 40px 0;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 30px;
    }
    
    .pricing-card {
        padding: 25px 20px;
    }
    
    .pricing-card.featured {
        transform: none;
        border: 2px solid #8e44ad;
    }
    
    .price {
        font-size: 28px;
    }
    
    .plan-name {
        font-size: 18px;
        margin-bottom: 20px;
    }
    
    /* FAQ Section */
    .faq-section {
        padding: 40px 0;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-top: 30px;
    }
    
    .faq-item {
        padding: 15px;
    }
    
    .faq-question {
        font-size: 14px;
    }
    
    .faq-answer {
        font-size: 13px !important;
        padding-top: 10px !important;
    }
    
    /* Contact Section */
    .contact-section {
        padding: 40px 0;
    }
    
    .contact-form {
        max-width: 100%;
        padding: 0 15px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-bottom: 15px;
    }
    
    .form-group input,
    .form-group textarea {
        padding: 12px;
        font-size: 14px;
    }
    
    .form-group textarea {
        height: 100px;
    }
    
    .form-actions {
        justify-content: center;
    }
    
    /* Footer */
    .footer {
        padding: 40px 0 15px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-bottom: 30px;
        text-align: center;
    }
    
    .footer-section h3 {
        font-size: 18px;
        margin-bottom: 15px;
    }
    
    .footer-section p {
        font-size: 13px;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .disclosures p {
        font-size: 11px;
    }
    
    .research-links ul li {
        margin-bottom: 8px;
    }
    
    .research-links ul li a {
        font-size: 12px;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .hero-left h1 {
        font-size: 24px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .book-image img {
        max-width: 200px;
    }
    
    .stats-image img {
        width: 120px;
        height: 120px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .author-image img {
        height: 250px;
    }
    
    .cta-button,
    .purple-button {
        padding: 10px 20px;
        font-size: 14px;
    }
}