/* Reset e configurações básicas */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* Header */
.header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.nav {
    padding: 1.2rem 0;
}

.nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
}

.nav-brand {
    flex-shrink: 0;
}

.nav-brand a {
    color: #2563eb;
    font-weight: 800;
    font-size: 1.8rem;
    text-decoration: none;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.3s ease;
}

.nav-brand a:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: #4a5568;
    font-weight: 600;
    font-size: 1rem;
    padding: 0.75rem 1.25rem;
    border-radius: 25px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.nav-links a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: left 0.3s ease;
    z-index: -1;
}

.nav-links a:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.nav-links a:hover::before {
    left: 0;
}

.book-nav-link {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%) !important;
    color: white !important;
    font-weight: 700 !important;
    padding: 0.875rem 1.5rem !important;
    border-radius: 30px !important;
    box-shadow: 0 4px 15px rgba(238, 90, 36, 0.3) !important;
    animation: pulse-book 2s infinite;
}

.book-nav-link::before {
    display: none !important;
}

.book-nav-link:hover {
    background: linear-gradient(135deg, #ee5a24 0%, #ff6b6b 100%) !important;
    transform: translateY(-3px) !important;
    box-shadow: 0 8px 25px rgba(238, 90, 36, 0.5) !important;
}

@keyframes pulse-book {
    0%, 100% {
        box-shadow: 0 4px 15px rgba(238, 90, 36, 0.3);
    }
    50% {
        box-shadow: 0 6px 20px rgba(238, 90, 36, 0.5);
    }
}

/* Menu mobile */
.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #4a5568;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* Responsividade do header */
@media (max-width: 768px) {
    .nav {
        padding: 1rem 0;
    }
    
    .nav-brand a {
        font-size: 1.5rem;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(15px);
        flex-direction: column;
        gap: 0;
        padding: 2rem 0;
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-links a {
        padding: 1rem 2rem;
        border-radius: 0;
        width: 100%;
        text-align: center;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }
    
    .nav-links a:hover {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        transform: none;
    }
    
    .book-nav-link {
        margin: 1rem 2rem !important;
        border-radius: 25px !important;
        border-bottom: none !important;
    }
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.highlight {
    color: #fbbf24;
    position: relative;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-info {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.info-item i {
    color: #fbbf24;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.6);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.2rem;
}

.cta-note {
    font-size: 0.9rem;
    opacity: 0.8;
    font-style: italic;
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Seções gerais */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
}

/* Problema/Solução */
.problem-solution {
    background: #f8fafc;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.problem-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.problem-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.problem-icon i {
    font-size: 2rem;
    color: white;
}

.problem-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1f2937;
}

.solution {
    text-align: center;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    padding: 3rem;
    border-radius: 20px;
}

.solution h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.solution p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Benefícios */
.benefits {
    background: white;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.benefit-card {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.benefit-card:hover {
    border-color: #2563eb;
    transform: translateY(-5px);
}

.benefit-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.benefit-icon i {
    font-size: 2rem;
    color: white;
}

.benefit-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.benefit-card p {
    color: #6b7280;
}

.guarantee {
    text-align: center;
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: white;
    padding: 2rem;
    border-radius: 15px;
}

.guarantee h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Público-alvo */
.target-audience {
    background: #f8fafc;
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.audience-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.audience-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.audience-icon i {
    font-size: 1.5rem;
    color: white;
}

.audience-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.audience-card p {
    color: #6b7280;
    font-size: 0.9rem;
}

.requirement {
    text-align: center;
    background: #1f2937;
    color: white;
    padding: 1.5rem;
    border-radius: 10px;
}

/* Metodologia */
.methodology {
    background: white;
}

.methodology-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.method-card {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    border-left: 4px solid #2563eb;
    transition: transform 0.3s ease;
}

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

.method-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #06b6d4, #0891b2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.method-icon i {
    font-size: 2rem;
    color: white;
}

.method-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.method-card p {
    color: #6b7280;
}

/* Investimento */
.investment {
    background: linear-gradient(135deg, #1f2937, #111827);
    color: white;
}

.investment-content {
    text-align: center;
}

.investment-header h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.price {
    margin-bottom: 3rem;
}

.price-main {
    font-size: 4rem;
    font-weight: 800;
    color: #fbbf24;
    display: block;
}

.price-installment {
    font-size: 1.5rem;
    opacity: 0.8;
}

.investment-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
    text-align: left;
}

.included h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #fbbf24;
}

.included ul {
    list-style: none;
}

.included li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.included i {
    color: #10b981;
    font-size: 1.2rem;
}

.comparison {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
}

.comparison p {
    font-size: 1.1rem;
}

.cta-section {
    text-align: center;
}

.security-note {
    margin-top: 1rem;
    opacity: 0.8;
    font-size: 0.9rem;
}

.security-note i {
    color: #10b981;
    margin-right: 0.5rem;
}

/* FAQ */
.faq {
    background: #f8fafc;
}

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

.faq-item {
    background: white;
    margin-bottom: 1rem;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background: #f8fafc;
}

.faq-question h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1f2937;
}

.faq-question i {
    color: #2563eb;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 200px;
}

.faq-answer p {
    color: #6b7280;
    line-height: 1.6;
}

/* CTA Final */
.final-cta {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    text-align: center;
}

.final-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.final-cta p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.urgency {
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem;
    border-radius: 10px;
    margin-bottom: 2rem;
}

.urgency p {
    font-size: 1.1rem;
    color: #fbbf24;
    margin: 0;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    opacity: 0.8;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    opacity: 0.6;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 15px;
    width: 90%;
    max-width: 600px;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 1rem;
    top: 1rem;
}

.close:hover {
    color: #000;
}

.modal-content h2 {
    margin-bottom: 2rem;
    color: #1f2937;
    text-align: center;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #1f2937;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* Responsividade */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-info {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .investment-details {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .price-main {
        font-size: 3rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    section {
        padding: 60px 0;
    }
    
    .btn-primary {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    .btn-large {
        padding: 1rem 2rem;
        font-size: 1.1rem;
    }
}

/* Animações */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.section-header,
.problem-card,
.benefit-card,
.audience-card,
.method-card {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}


/* Propagandas Laterais do Livro */
.book-sidebar {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 280px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    overflow: hidden;
    transition: all 0.3s ease;
}

.book-sidebar.left {
    left: 20px;
}

.book-sidebar.right {
    right: 20px;
}

.book-sidebar:hover {
    transform: translateY(-50%) scale(1.05);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.book-tab {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    text-align: center;
    padding: 8px;
    font-weight: bold;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.book-content {
    padding: 20px;
    color: white;
    text-align: center;
}

.book-content h3 {
    margin: 0 0 10px 0;
    font-size: 1.2rem;
    font-weight: bold;
}

.book-content p {
    margin: 0 0 15px 0;
    font-size: 0.9rem;
    opacity: 0.9;
    line-height: 1.4;
}

.book-price {
    font-size: 1.8rem;
    font-weight: bold;
    color: #ffd700;
    margin: 15px 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.book-cta-btn {
    display: inline-block;
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    color: white;
    padding: 12px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(238, 90, 36, 0.4);
    margin: 10px 0;
}

.book-cta-btn:hover {
    background: linear-gradient(45deg, #ee5a24, #ff6b6b);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(238, 90, 36, 0.6);
    color: white;
    text-decoration: none;
}

.book-cta-btn i {
    margin-right: 8px;
}

.book-bonus {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    padding: 8px 12px;
    margin-top: 15px;
    font-size: 0.8rem;
    font-weight: bold;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.book-bonus strong {
    color: #ffd700;
}

/* Responsividade das propagandas laterais */
@media (max-width: 1400px) {
    .book-sidebar {
        width: 240px;
    }
    
    .book-sidebar.left {
        left: 10px;
    }
    
    .book-sidebar.right {
        right: 10px;
    }
}

@media (max-width: 1200px) {
    .book-sidebar {
        display: none;
    }
}

/* Seção baseada no livro */
.based-on-book {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 80px 0;
    position: relative;
}

.based-on-book::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
}

.based-on-book h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 30px;
    font-size: 2.5rem;
    font-weight: bold;
}

.based-on-book > .container > p {
    text-align: center;
    font-size: 1.2rem;
    color: #6c757d;
    max-width: 800px;
    margin: 0 auto 50px auto;
    line-height: 1.6;
}

.book-highlight {
    background: white;
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    border-left: 5px solid #667eea;
}

.book-highlight h3 {
    color: #2c3e50;
    margin-bottom: 25px;
    font-size: 1.8rem;
}

.book-highlight blockquote {
    font-size: 1.3rem;
    font-style: italic;
    color: #495057;
    margin: 30px 0;
    padding: 0;
    border: none;
    line-height: 1.6;
    position: relative;
}

.book-highlight blockquote::before {
    content: '"';
    font-size: 4rem;
    color: #667eea;
    position: absolute;
    top: -20px;
    left: -20px;
    font-family: serif;
}

.book-highlight blockquote::after {
    content: '"';
    font-size: 4rem;
    color: #667eea;
    position: absolute;
    bottom: -40px;
    right: -20px;
    font-family: serif;
}

.book-link {
    display: inline-block;
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    padding: 15px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    margin-top: 20px;
}

.book-link:hover {
    background: linear-gradient(45deg, #764ba2, #667eea);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    color: white;
    text-decoration: none;
}

.book-link i {
    margin-right: 10px;
}

/* Responsividade da seção baseada no livro */
@media (max-width: 768px) {
    .based-on-book h2 {
        font-size: 2rem;
    }
    
    .based-on-book > .container > p {
        font-size: 1.1rem;
    }
    
    .book-highlight {
        padding: 25px;
        margin: 0 20px;
    }
    
    .book-highlight h3 {
        font-size: 1.5rem;
    }
    
    .book-highlight blockquote {
        font-size: 1.1rem;
    }
    
    .book-highlight blockquote::before,
    .book-highlight blockquote::after {
        font-size: 3rem;
    }
}