* {
    box-sizing: border-box;
}

body {
    padding-top: 50px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: #333;
    background-color: #f8f9fa;
    font-size: 17px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.navbar-inverse {
    background-color: #1a1a2e;
    border: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar-brand {
    padding: 4px 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.navbar-brand .logo-icon {
    height: 46px;
    width: auto;
    object-fit: contain;
    padding: 6px;
}

.logo-text {
    color: #fff;
    font-family: 'Poppins', sans-serif;
    font-size: 20px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.logo-text-highlight {
    color: #2dd4bf;
}

.tm {
    font-size: 10px;
    color: #2dd4bf;
    vertical-align: super;
}

.ebook-terms-link {
    margin-top: 8px;
    margin-bottom: 8px;
    font-size: 12px;
    text-align: center;
}

.ebook-terms-link a {
    color: #666;
    text-decoration: underline;
}

.ebook-terms-link a:hover {
    color: #333;
}

.navbar-inverse .navbar-nav > li > a {
    color: #fff;
    font-weight: 500;
    transition: color 0.2s;
}

.navbar-inverse .navbar-nav > li > a:hover {
    color: #4a90d9;
}

.main-content {
    min-height: calc(100vh - 200px);
}

.hero {
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.85) 0%, rgba(22, 33, 62, 0.85) 100%), url('/images/hero-bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 80px 0;
    margin-bottom: 60px;
}

.hero-title {
    color: #fff;
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.hero-subtitle {
    color: rgba(255,255,255,0.8);
    font-size: 22px;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.search-box {
    display: flex;
    justify-content: center;
    margin: 0 auto;
}

.search-btn {
    height: 50px;
    padding: 0 40px;
    border-radius: 8px;
    background-color: #4a90d9;
    border: none;
    font-weight: 600;
    font-size: 16px;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.search-btn:hover {
    background-color: #3a7bc8;
}

.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 40px;
    color: #1a1a2e;
}

.categories {
    padding: 60px 0;
    background-color: #fff;
}

.category-card {
    display: block;
    background: #fff;
    border: 1px solid #e9ecef;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    text-decoration: none;
    transition: all 0.3s ease;
    text-align: center;
    min-height: 220px;
}

.categories .row {
    display: flex;
    flex-wrap: wrap;
    row-gap: 30px;
}

.categories .row > [class*="col-"] {
    display: flex;
    margin-bottom: 0;
    flex: 0 0 33.333%;
    max-width: 33.333%;
}

.category-card {
    width: 100%;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-decoration: none;
    border-color: #2dd4bf;
}

.category-card:hover .category-icon {
    background: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 100%);
}

.category-card:hover h3 {
    color: #2dd4bf;
}

.category-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: background 0.3s ease;
}

.category-icon i {
    font-size: 24px;
    color: #fff;
}

.category-card h3 {
    color: #1a1a2e;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}

.category-card p {
    color: #6c757d;
    font-size: 16px;
    margin: 0;
}

.category-links a {
    color: #4a90d9;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.2s;
}

.category-links a:hover {
    color: #2dd4bf;
    text-decoration: underline;
}

.category-more-link {
    display: inline-block;
    margin-top: 8px;
    font-size: 13px;
    font-weight: 600;
    color: #2dd4bf;
    text-decoration: none;
    letter-spacing: 0.2px;
    transition: color 0.2s, transform 0.15s;
}
.category-more-link:hover {
    color: #4a90d9;
    text-decoration: none;
    transform: translateX(2px);
}

.books-strip {
    padding: 48px 0;
    background: linear-gradient(135deg, #1a2a4a 0%, #2c4a7c 100%);
}
.books-strip-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 12px;
}
.books-strip-heading {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 4px;
}
.books-strip-sub {
    font-size: 14px;
    color: #a8c0e0;
    margin: 0;
}
.btn-books-strip-cta {
    background: transparent;
    border: 2px solid #4ec994;
    color: #4ec994;
    font-weight: 600;
    font-size: 14px;
    white-space: nowrap;
    flex-shrink: 0;
}
.btn-books-strip-cta:hover,
.btn-books-strip-cta:focus {
    background: #4ec994;
    color: #1a2a4a;
}
.books-strip-row {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 8px;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.2) transparent;
}
.books-strip-row::-webkit-scrollbar { height: 4px; }
.books-strip-row::-webkit-scrollbar-track { background: transparent; }
.books-strip-row::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 2px; }
.books-strip-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    flex: 0 0 150px;
    transition: transform 0.18s;
}
.books-strip-item:hover {
    transform: translateY(-4px);
    text-decoration: none;
}
.books-strip-cover-wrap {
    width: 150px;
    height: 220px;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(0,0,0,0.35);
    margin-bottom: 10px;
}
.books-strip-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.books-strip-cover-placeholder {
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: rgba(255,255,255,0.4);
}
.books-strip-title {
    font-size: 13px;
    font-weight: 600;
    color: #c8d8f0;
    text-align: center;
    line-height: 1.3;
}
.books-strip-item:hover .books-strip-title {
    color: #fff;
}

.subjects {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.subject-box {
    background: #fff;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 20px 25px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.subject-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border-color: #2dd4bf;
}

.subject-box:hover .subject-title {
    color: #2dd4bf;
}

.subject-title {
    color: #1a1a2e;
    font-size: 20px;
    font-weight: 600;
    margin: 0 0 15px 0;
    padding-bottom: 10px;
    border-bottom: 2px solid #2dd4bf;
}

.subject-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.subject-links li {
    margin-bottom: 8px;
}

.subject-links li:last-child {
    margin-bottom: 0;
}

.subject-links a {
    color: #4a90d9;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.2s;
}

.subject-links a:hover {
    color: #2dd4bf;
    text-decoration: underline;
}

.subject-links .more-link {
    color: #6c757d;
    font-style: italic;
}

.subject-links .more-link:hover {
    color: #2dd4bf;
}

.topics {
    padding: 60px 0;
    background-color: #fff;
}

.topic-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #fff;
    border: 1px solid #e9ecef;
    border-radius: 12px;
    padding: 25px 20px;
    margin-bottom: 20px;
    text-decoration: none;
    transition: all 0.3s ease;
    text-align: center;
}

.topic-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-decoration: none;
    border-color: #2dd4bf;
}

.topic-card:hover .topic-icon {
    background: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 100%);
}

.topic-card:hover h4 {
    color: #2dd4bf;
}

.topic-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    transition: background 0.3s ease;
}

.topic-icon i {
    font-size: 20px;
    color: #fff;
}

.topic-card h4 {
    color: #1a1a2e;
    font-size: 15px;
    font-weight: 600;
    margin: 0;
    transition: color 0.2s;
}

.topic-card .badge {
    background-color: #e9ecef;
    color: #6c757d;
    font-weight: 500;
    transition: all 0.2s;
}

.section-more {
    margin-top: 30px;
    display: flex;
    justify-content: center;
}

.btn-more {
    background-color: transparent;
    border: 2px solid #4a90d9;
    color: #4a90d9;
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-more:hover {
    background-color: #4a90d9;
    color: #fff;
    text-decoration: none;
}

.btn-more i {
    transition: transform 0.3s ease;
}

.btn-more:hover i {
    transform: translateX(5px);
}

.stats {
    padding: 60px 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.stat-item {
    text-align: center;
    padding: 20px;
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    color: #2dd4bf;
    margin-bottom: 8px;
    font-family: 'Poppins', sans-serif;
}

.stat-label {
    font-size: 17px;
    color: rgba(255,255,255,0.8);
    font-weight: 500;
}

.testimonials {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.testimonial-card {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    height: 100%;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}

.testimonial-content {
    margin-bottom: 20px;
}

.quote-icon {
    color: #2dd4bf;
    font-size: 24px;
    margin-bottom: 15px;
    opacity: 0.6;
}

.testimonial-content p {
    font-size: 17px;
    line-height: 1.8;
    color: #4a5568;
    font-style: italic;
    margin: 0;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.author-avatar i {
    color: #fff;
    font-size: 20px;
}

.author-info {
    flex: 1;
}

.author-name {
    font-weight: 600;
    color: #1a1a2e;
    font-size: 16px;
    margin-bottom: 3px;
}

.author-role {
    font-size: 14px;
    color: #64748b;
}

.ai-promo {
    padding: 80px 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%) !important;
    overflow: hidden;
}

.ai-promo-content {
    padding-right: 40px;
}

.ai-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 100%);
    color: #fff;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}

.ai-promo-title {
    color: #fff;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
    line-height: 1.2;
}

.ai-promo-subtitle {
    color: rgba(255,255,255,0.8);
    font-size: 18px;
    margin-bottom: 25px;
    line-height: 1.6;
}

.ai-features {
    list-style: none;
    padding: 0;
    margin: 0 0 30px 0;
}

.ai-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: rgba(255,255,255,0.9);
    font-size: 15px;
    margin-bottom: 12px;
}

.ai-features li i {
    color: #2dd4bf;
    font-size: 18px;
    margin-top: 2px;
}

.ai-promo-cta {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-ai-primary {
    background: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 100%);
    color: #fff;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.btn-ai-primary:hover {
    background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%);
    color: #fff;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(45, 212, 191, 0.3);
}

.ai-trial-note {
    color: rgba(255,255,255,0.6);
    font-size: 14px;
}

.ai-promo-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.ai-demo-card {
    background: #fff;
    border-radius: 16px;
    padding: 25px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.3);
    max-width: 400px;
    width: 100%;
}

.ai-demo-header {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 20px;
    font-size: 15px;
}

.ai-status-dot {
    width: 10px;
    height: 10px;
    background: #2dd4bf;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.ai-badge-small {
    background: #dcfce7;
    color: #16a34a;
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 4px;
    margin-left: auto;
}

.ai-demo-question {
    background: #f8fafc;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
}

.ai-question-label {
    color: #64748b;
    font-size: 13px;
    margin-bottom: 10px;
}

.ai-question-text {
    color: #1e293b;
    font-size: 16px;
    font-weight: 500;
    line-height: 1.5;
    margin: 0;
    font-style: italic;
}

.ai-demo-modes {
    display: flex;
    gap: 10px;
}

.ai-mode-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    color: #64748b;
    background: #f1f5f9;
    transition: all 0.2s;
}

.ai-mode-btn.active {
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    color: #fff;
}

.cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    text-align: center;
}

.cta h2 {
    color: #fff;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
}

.cta p {
    color: rgba(255,255,255,0.8);
    font-size: 18px;
    margin-bottom: 30px;
}

.cta .btn-primary {
    background-color: #4a90d9;
    border: none;
    padding: 15px 40px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 8px;
}

.cta .btn-primary:hover {
    background-color: #3a7bc8;
}

.site-footer {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 60px 0 0;
    color: #fff;
}

.footer-main {
    padding-bottom: 40px;
}

.footer-col {
    margin-bottom: 30px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-logo {
    height: 40px;
    width: auto;
}

.footer-brand-text {
    font-family: 'Poppins', sans-serif;
    font-size: 22px;
    font-weight: 600;
    color: #fff;
}

.footer-brand-highlight {
    color: #2dd4bf;
}

.footer-tagline {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 25px;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    color: #fff;
    font-size: 16px;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #2dd4bf;
    color: #1a1a2e;
    text-decoration: none;
    transform: translateY(-3px);
}

.footer-heading {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-nav li {
    margin-bottom: 12px;
}

.footer-nav a {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    transition: all 0.2s ease;
}

.footer-nav a:hover {
    color: #2dd4bf;
    text-decoration: none;
    padding-left: 5px;
}

.footer-cta-text {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.btn-footer-cta {
    background: linear-gradient(135deg, #2dd4bf 0%, #20a89a 100%);
    color: #1a1a2e;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.btn-footer-cta:hover {
    background: linear-gradient(135deg, #38e8d0 0%, #2dd4bf 100%);
    color: #1a1a2e;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(45, 212, 191, 0.3);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 25px 0;
}

.copyright-text {
    color: rgba(255,255,255,0.5);
    font-size: 14px;
    margin: 0;
}

.cookie-container {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.cookie-container p {
    color: rgba(255,255,255,0.6);
    font-size: 13px;
    margin: 0;
}

.cookie-container a {
    color: #4a90d9;
}

.cookie-btn {
    background-color: #4a90d9;
    color: #fff;
    border: none;
    padding: 5px 15px;
    border-radius: 4px;
    font-size: 13px;
    margin-left: 10px;
}

.panel:hover,
.panel:focus {
    background-color: #e8e8e8;
}

@media (max-width: 991px) {
    .hero {
        padding: 60px 0;
        margin-bottom: 40px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
        padding: 0 15px;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 30px;
    }
    
    .categories,
    .subjects,
    .topics {
        padding: 40px 0;
    }
    
    .category-card {
        min-height: auto;
        padding: 25px 20px;
    }
    
    /* Footer tablet 991px */
    .site-footer {
        padding: 50px 0 0;
    }
    
    .footer-main {
        padding-bottom: 35px;
    }
    
    .footer-col {
        margin-bottom: 20px;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 50px;
    }
    
    .navbar-brand .logo-icon {
        height: 40px;
    }
    
    .logo-text {
        font-size: 18px;
    }
    
    .hero {
        padding: 50px 0;
        margin-bottom: 30px;
    }
    
    .hero-title {
        font-size: 28px;
        line-height: 1.3;
        margin-bottom: 15px;
    }
    
    .hero-subtitle {
        font-size: 16px;
        margin-bottom: 30px;
        padding: 0 10px;
    }
    
    .search-btn {
        padding: 0 25px;
        font-size: 14px;
        height: 48px;
    }
    
    .section-title {
        font-size: 24px;
        margin-bottom: 25px;
    }
    
    .categories,
    .subjects,
    .topics {
        padding: 35px 0;
    }
    
    .category-card {
        padding: 20px 15px;
        margin-bottom: 20px;
        min-height: auto;
    }
    
    .category-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 15px;
    }
    
    .category-icon i {
        font-size: 20px;
    }
    
    .category-card h3 {
        font-size: 18px;
    }
    
    .categories .row > [class*="col-"] {
        flex: 0 0 50%;
        max-width: 50%;
    }
    
    .category-links {
        font-size: 13px;
    }
    
    .subject-box {
        padding: 15px 20px;
        margin-bottom: 15px;
    }
    
    .subject-title {
        font-size: 16px;
        margin-bottom: 12px;
        padding-bottom: 8px;
    }
    
    .subject-links a {
        font-size: 13px;
    }
    
    .topic-card {
        padding: 20px 15px;
        margin-bottom: 15px;
    }
    
    .topic-icon {
        width: 45px;
        height: 45px;
        margin-bottom: 12px;
    }
    
    .topic-icon i {
        font-size: 18px;
    }
    
    .topic-card h4 {
        font-size: 14px;
    }
    
    .cta {
        padding: 50px 0;
    }
    
    .cta h2 {
        font-size: 26px;
    }
    
    .cta p {
        font-size: 16px;
        padding: 0 15px;
    }
    
    .cta .btn-primary {
        padding: 12px 30px;
        font-size: 16px;
    }
    
    .ai-promo {
        padding: 50px 0;
    }
    
    .ai-promo-content {
        padding-right: 0;
        margin-bottom: 40px;
    }
    
    .ai-promo-title {
        font-size: 28px;
    }
    
    .ai-promo-subtitle {
        font-size: 16px;
    }
    
    .ai-features li {
        font-size: 14px;
    }
    
    .ai-promo-cta {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .ai-demo-card {
        max-width: 100%;
    }
    
    .site-footer {
        padding: 30px 0 15px;
    }
    
    .social-links a {
        font-size: 20px;
        margin: 0 8px;
    }
    
    .footer-links span {
        margin: 0 10px;
    }
    
    /* Stats section mobile */
    .stats {
        padding: 40px 0;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .stat-label {
        font-size: 14px;
    }
    
    .stat-item {
        padding: 15px 10px;
    }
    
    /* Testimonials section mobile */
    .testimonials {
        padding: 50px 0;
    }
    
    .testimonial-card {
        padding: 25px 20px;
        margin-bottom: 20px;
    }
    
    .testimonial-content p {
        font-size: 15px;
    }
    
    .author-avatar {
        width: 45px;
        height: 45px;
    }
    
    .author-avatar i {
        font-size: 18px;
    }
    
    /* Footer mobile 768px */
    .site-footer {
        padding: 40px 0 0;
    }
    
    .footer-main {
        padding-bottom: 30px;
    }
    
    .footer-col {
        text-align: left;
        margin-bottom: 25px;
    }
    
    .footer-brand {
        justify-content: flex-start;
    }
    
    .footer-tagline {
        max-width: 100%;
    }
    
    .social-links {
        justify-content: flex-start;
    }
    
    .footer-heading {
        margin-bottom: 15px;
    }
    
    .footer-nav {
        display: block;
    }
    
    .footer-nav li {
        margin-bottom: 8px;
    }
    
    .footer-cta-text {
        max-width: 100%;
    }
    
    .footer-bottom {
        padding: 20px 0;
    }
    
    .copyright-text {
        text-align: center;
    }
    
    .cookie-container {
        margin-top: 20px;
        padding: 15px;
        text-align: center;
    }
    
    .cookie-container p {
        margin-bottom: 10px;
    }
    
    .cookie-btn {
        margin-left: 0;
        margin-top: 10px;
        display: inline-block;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 24px;
    }
    
    .hero-subtitle {
        font-size: 14px;
    }
    
    .search-btn {
        padding: 0 20px;
        font-size: 13px;
        height: 44px;
        white-space: normal;
        text-align: center;
    }
    
    .categories .row > [class*="col-"] {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .category-card h3 {
        font-size: 16px;
    }
    
    .category-links {
        font-size: 12px;
    }
    
    .cta h2 {
        font-size: 22px;
    }
    
    .cta p {
        font-size: 14px;
    }
    
    .footer-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    
    .footer-links span {
        display: none;
    }
    
    /* Stats section small mobile */
    .stats {
        padding: 30px 0;
    }
    
    .stat-number {
        font-size: 26px;
    }
    
    .stat-label {
        font-size: 12px;
    }
    
    .stat-item {
        padding: 12px 5px;
    }
    
    /* Testimonials small mobile */
    .testimonials {
        padding: 40px 0;
    }
    
    .testimonial-card {
        padding: 20px 15px;
    }
    
    .testimonial-content p {
        font-size: 14px;
        line-height: 1.7;
    }
    
    .quote-icon {
        font-size: 20px;
    }
    
    .author-avatar {
        width: 40px;
        height: 40px;
    }
    
    .author-avatar i {
        font-size: 16px;
    }
    
    .author-role {
        font-size: 13px;
    }
    
    /* AI Promo small mobile */
    .ai-promo {
        padding: 40px 0;
    }
    
    .ai-promo-title {
        font-size: 22px;
    }
    
    .ai-promo-subtitle {
        font-size: 14px;
    }
    
    .ai-badge {
        font-size: 11px;
        padding: 4px 10px;
    }
    
    .ai-features li {
        font-size: 13px;
    }
    
    .btn-ai-primary {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .ai-demo-card {
        padding: 15px;
    }
    
    .ai-demo-header {
        font-size: 12px;
    }
    
    .ai-question-text {
        font-size: 14px;
    }
    
    .ai-mode-btn {
        font-size: 11px;
        padding: 6px 10px;
    }
    
    /* Footer small mobile */
    .footer-brand-text {
        font-size: 18px;
    }
    
    .footer-tagline {
        font-size: 13px;
    }
    
    .social-links a {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }
    
    .footer-heading {
        font-size: 14px;
    }
    
    .footer-nav a {
        font-size: 13px;
    }
    
    .footer-cta-text {
        font-size: 13px;
    }
    
    .btn-footer-cta {
        padding: 10px 20px;
        font-size: 13px;
    }
    
    /* Footer small mobile 480px */
    .site-footer {
        padding: 30px 0 0;
    }
    
    .footer-main {
        padding-bottom: 20px;
    }
    
    .footer-col {
        margin-bottom: 20px;
        text-align: left;
    }
    
    .footer-logo {
        height: 32px;
    }
    
    .footer-brand-text {
        font-size: 16px;
    }
    
    .footer-tagline {
        font-size: 12px;
        max-width: 100%;
        margin-bottom: 20px;
    }
    
    .social-links a {
        width: 34px;
        height: 34px;
        font-size: 13px;
    }
    
    .footer-heading {
        font-size: 13px;
        margin-bottom: 12px;
    }
    
    .footer-nav a {
        font-size: 12px;
    }
    
    .footer-cta-text {
        font-size: 12px;
        max-width: 100%;
    }
    
    .btn-footer-cta {
        padding: 8px 16px;
        font-size: 12px;
    }
    
    .footer-bottom {
        padding: 15px 0;
    }
    
    .copyright-text {
        font-size: 12px;
    }
    
    .cookie-container {
        padding: 12px 10px;
    }
    
    .cookie-container p {
        font-size: 11px;
        line-height: 1.5;
    }
    
    .cookie-btn {
        padding: 4px 12px;
        font-size: 11px;
    }
}

.page-hero {
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.85) 0%, rgba(22, 33, 62, 0.85) 100%), url('/images/hero-bg.png');
    background-size: cover;
    background-position: center;
    padding: 60px 0;
    text-align: center;
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    position: relative;
}

.page-title {
    color: #fff;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
}

.page-subtitle {
    color: rgba(255,255,255,0.8);
    font-size: 18px;
    margin: 0;
}

.hero-book-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    padding: 0;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    transform: translateY(10px);
    display: flex;
    overflow: hidden;
}

.hero-book-image {
    width: 55%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 15px;
}

.hero-book-image img {
    max-width: 100%;
    max-height: 320px;
    border-radius: 6px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.hero-book-info {
    width: 45%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 25px 15px;
    text-align: center;
    background: #fff;
}

.hero-book-pricing {
    margin-bottom: 15px;
    text-align: center;
}

.hero-book-pricing .original-price {
    text-decoration: line-through;
    color: #999;
    font-size: 16px;
    margin-right: 10px;
}

.hero-book-pricing .sale-price {
    font-size: 26px;
    font-weight: 700;
    color: #2c3e50;
}

.book-pricing {
    text-align: center;
    margin: 15px 0;
}

.book-pricing .original-price {
    text-decoration: line-through;
    color: #999;
    font-size: 14px;
    margin-right: 8px;
}

.book-pricing .sale-price {
    font-size: 22px;
    font-weight: 700;
    color: #2c3e50;
}

.btn-hero-book {
    display: inline-block;
    background: linear-gradient(135deg, #2dd4bf 0%, #22c55e 100%);
    color: #fff;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
}

.btn-hero-book:hover {
    background: linear-gradient(135deg, #22c55e 0%, #2dd4bf 100%);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(45, 212, 191, 0.4);
    text-decoration: none;
}

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

.hero-book-terms {
    margin-top: 10px;
    font-size: 12px;
}

.hero-book-terms a {
    color: #666;
    text-decoration: underline;
}

.hero-book-terms a:hover {
    color: #333;
}

.ebook-more-message {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-left: 4px solid #4a90d9;
    padding: 15px 20px;
    margin: 20px 0 30px 0;
    border-radius: 0 8px 8px 0;
    font-size: 15px;
    color: #495057;
}

.ebook-more-message i {
    color: #4a90d9;
    margin-right: 5px;
}

.ebook-more-message a {
    color: #2dd4bf;
    font-weight: 600;
    text-decoration: none;
}

.ebook-more-message a:hover {
    color: #22c55e;
    text-decoration: underline;
}

.final-ebook-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    padding: 0;
    margin: 40px 0 30px 0;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
    overflow: hidden;
}

.final-ebook-card > .row {
    display: flex;
    align-items: stretch;
    margin: 0;
}

.final-ebook-card > .row > [class*="col-"]:first-child {
    padding: 0;
    display: flex;
}

.final-ebook-card > .row > [class*="col-"]:last-child {
    padding: 0;
}

.final-ebook-image {
    width: 100%;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 15px;
}

.final-ebook-image img {
    max-width: 100%;
    height: 280px;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.final-ebook-content {
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
}

.final-ebook-title {
    font-size: 22px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 10px;
}

.final-ebook-desc {
    font-size: 15px;
    color: #666;
    margin-bottom: 15px;
    line-height: 1.5;
}

.final-ebook-pricing {
    margin-bottom: 15px;
}

.final-ebook-pricing .original-price {
    text-decoration: line-through;
    color: #999;
    font-size: 16px;
    margin-right: 10px;
}

.final-ebook-pricing .sale-price {
    font-size: 24px;
    font-weight: 700;
    color: #2c3e50;
}

.final-ebook-terms {
    margin-top: 12px;
    font-size: 12px;
}

.final-ebook-terms a {
    color: #666;
    text-decoration: underline;
}

.final-ebook-terms a:hover {
    color: #333;
}

@media (max-width: 767px) {
    .final-ebook-card > .row {
        flex-direction: column;
    }
    
    .final-ebook-card {
        text-align: center;
    }
    
    .final-ebook-image {
        min-height: 200px;
    }
    
    .final-ebook-content {
        text-align: center;
        padding: 25px;
    }
}

.topic-hero-content {
    text-align: left;
    padding-top: 20px;
}

.categories-section {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.section-heading {
    font-size: 28px;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 3px solid #4a90d9;
    display: inline-block;
}

.section-heading i {
    color: #4a90d9;
    margin-right: 10px;
}

.subject-section {
    background-color: #fff;
    border-top: 1px solid #e9ecef;
}

.categories-section .row {
    display: flex;
    flex-wrap: wrap;
}

.categories-section .row > [class*="col-"] {
    display: flex;
    margin-bottom: 30px;
}

.category-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    margin-bottom: 0;
    width: 100%;
    overflow: hidden;
    transition: all 0.3s ease;
    height: 100%;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 1px solid #eee;
    min-height: 88px;
}

.categories-section .category-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.categories-section .category-icon i {
    color: #fff;
    font-size: 20px;
}

.category-title {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: #1a1a2e;
    line-height: 1.3;
    flex: 1;
}

.category-body {
    padding: 20px;
}

.role-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.role-list li {
    padding: 8px 0;
    border-bottom: 1px solid #f0f0f0;
    text-align: left;
}

.role-list li.text-muted {
    text-align: center;
    color: #999;
    font-style: italic;
    border-bottom: none;
}

.role-list li:last-child {
    border-bottom: none;
}

.role-list a {
    color: #4a5568;
    text-decoration: none;
    font-size: 16px;
    display: flex;
    align-items: center;
    transition: all 0.2s ease;
}

.role-list a:before {
    content: '\f105';
    font-family: FontAwesome;
    margin-right: 10px;
    color: #2dd4bf;
    font-size: 12px;
}

.role-list a:hover {
    color: #4a90d9;
    padding-left: 5px;
}

.role-subsection {
    margin-bottom: 20px;
}

.role-subsection:last-child {
    margin-bottom: 0;
}

.subsection-title {
    font-size: 14px;
    font-weight: 600;
    color: #2dd4bf;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 2px solid #2dd4bf;
}

/* Interview Questions page responsive styles */
@media (max-width: 991px) {
    .page-hero {
        padding: 50px 0;
    }
    
    .page-title {
        font-size: 32px;
    }
    
    .categories-section {
        padding: 50px 0;
    }
    
    .category-card {
        margin-bottom: 25px;
    }
}

@media (max-width: 768px) {
    .page-hero {
        padding: 40px 0;
    }
    
    .page-title {
        font-size: 26px;
        padding: 0 10px;
    }
    
    .page-subtitle {
        font-size: 15px;
        padding: 0 15px;
    }
    
    .categories-section {
        padding: 40px 0;
    }
    
    .category-header {
        padding: 15px;
        min-height: 70px;
    }
    
    .categories-section .category-icon {
        width: 40px;
        height: 40px;
    }
    
    .categories-section .category-icon i {
        font-size: 16px;
    }
    
    .category-title {
        font-size: 15px;
    }
    
    .category-body {
        padding: 15px;
    }
    
    .role-list a {
        font-size: 14px;
        padding: 2px 0;
    }
    
    .role-list li {
        padding: 6px 0;
    }
    
    .subsection-title {
        font-size: 12px;
        margin-bottom: 8px;
        padding-bottom: 6px;
    }
    
    .role-subsection {
        margin-bottom: 15px;
    }
}

@media (max-width: 480px) {
    .page-hero {
        padding: 30px 0;
    }
    
    .page-title {
        font-size: 22px;
        line-height: 1.3;
    }
    
    .page-subtitle {
        font-size: 14px;
    }
    
    .categories-section {
        padding: 30px 0;
    }
    
    .category-header {
        padding: 12px;
        gap: 10px;
        min-height: auto;
    }
    
    .categories-section .category-icon {
        width: 36px;
        height: 36px;
    }
    
    .categories-section .category-icon i {
        font-size: 14px;
    }
    
    .category-title {
        font-size: 14px;
    }
    
    .category-body {
        padding: 12px;
    }
    
    .role-list a {
        font-size: 13px;
    }
    
    .role-list li {
        padding: 5px 0;
    }
    
    .role-list a:before {
        margin-right: 8px;
        font-size: 10px;
    }
    
    .subsection-title {
        font-size: 11px;
    }
}

.topic-content {
    padding: 50px 0;
    background-color: #f8f9fa;
}

.topic-intro {
    background: #fff;
    border-radius: 12px;
    padding: 25px 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.topic-intro p {
    font-size: 17px;
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 15px;
}

.topic-intro p:last-child {
    margin-bottom: 0;
}

.topic-intro strong,
.topic-intro b {
    color: #1a1a2e;
    font-weight: 600;
}

.table-of-contents {
    background: #fff;
    border-radius: 12px;
    padding: 25px 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    border-left: 4px solid #2dd4bf;
}

.toc-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e2e8f0;
}

.toc-header i {
    font-size: 20px;
    color: #2dd4bf;
}

.toc-header span {
    font-size: 20px;
    font-weight: 700;
    color: #1a1a2e;
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
}

.toc-list li {
    margin: 0;
}

.toc-list a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 15px;
    background: #f8f9fa;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.toc-list a:hover {
    background: #e6fffa;
    border-color: #2dd4bf;
    transform: translateY(-1px);
}

.toc-number {
    font-size: 14px;
    font-weight: 700;
    color: #2dd4bf;
    min-width: 24px;
}

.toc-title {
    flex: 1;
    font-size: 15px;
    font-weight: 500;
    color: #1a1a2e;
    line-height: 1.4;
}

.toc-count {
    font-size: 12px;
    color: #718096;
    background: #e2e8f0;
    padding: 3px 8px;
    border-radius: 12px;
    white-space: nowrap;
}

.topic-section-header {
    margin: 40px 0 25px 0;
    padding: 20px 25px;
    background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
    border-radius: 12px;
    border-left: 4px solid #2dd4bf;
}

.topic-section-header:first-child {
    margin-top: 0;
}

.topic-section-title {
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 8px 0;
}

.topic-section-desc {
    font-size: 15px;
    color: #a0aec0;
    margin: 0;
    line-height: 1.6;
}

.topic-section {
    margin-bottom: 40px;
}

.topic-section .section-header {
    margin-bottom: 20px;
}

.topic-section .section-name {
    font-size: 24px;
    font-weight: 700;
    color: #1a1a2e;
    margin: 0;
    padding-bottom: 10px;
    border-bottom: 3px solid #2dd4bf;
    display: inline-block;
}

.topic-section .section-intro {
    font-size: 17px;
    color: #4a5568;
    margin-bottom: 20px;
}

.question-card {
    background: #fff;
    border-radius: 12px;
    padding: 25px 30px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
}

.question-card:hover {
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.question-header {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.question-number {
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 6px;
    flex-shrink: 0;
}

.question-text {
    font-size: 20px;
    font-weight: 600;
    color: #1a1a2e;
    margin: 0;
    line-height: 1.5;
    flex: 1;
}

.question-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
    padding-left: 55px;
}

.question-tags .tag {
    background: #e9ecef;
    color: #4a5568;
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 4px;
}

.asked-notice {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    border-left: 4px solid #ef4444;
    border-radius: 0 8px 8px 0;
    padding: 10px 15px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #991b1b;
}

.asked-notice i {
    color: #ef4444;
    font-size: 16px;
}

.asked-company {
    font-weight: 600;
    color: #b91c1c;
}

.answer-content {
    padding-left: 55px;
}

.answer-content p {
    font-size: 17px;
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 15px;
}

.answer-content ul,
.answer-content ol {
    font-size: 17px;
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 15px;
    padding-left: 25px;
}

.answer-content li {
    font-size: 17px;
    line-height: 1.8;
    margin-bottom: 8px;
}

.answer-content strong,
.answer-content b {
    color: #1a1a2e;
}

.code-block {
    background: #1a1a2e;
    color: #e9ecef;
    padding: 20px;
    border-radius: 8px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 14px;
    overflow-x: auto;
    margin: 15px 0;
}

.diagram-container {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
    overflow-x: auto;
}

.diagram-container .mermaid {
    display: flex;
    justify-content: center;
    background: transparent;
    border: none;
    padding: 0;
    margin: 0;
    font-family: inherit;
    white-space: pre;
}

.diagram-container svg {
    max-width: 100%;
    height: auto;
}

.tips-box {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border-left: 4px solid #f59e0b;
    border-radius: 0 8px 8px 0;
    padding: 15px 20px;
    margin-top: 20px;
    display: flex;
    gap: 15px;
}

.tip-icon {
    color: #f59e0b;
    font-size: 20px;
    flex-shrink: 0;
}

.tips-content {
    flex: 1;
    min-width: 0;
}

.tips-content p {
    color: #92400e;
    margin: 0 0 8px 0;
}

.tips-content p:last-child {
    margin-bottom: 0;
}

.sidebar {
    position: sticky;
    top: 80px;
}

.sidebar-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.sidebar-header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 14px;
}

.sidebar-header i {
    font-size: 16px;
}

.sidebar-body {
    padding: 20px;
}

.sidebar-body .form-control {
    border-radius: 6px;
    margin-bottom: 10px;
}

.btn-subscribe {
    width: 100%;
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 10px;
    font-weight: 600;
}

.btn-subscribe:hover {
    background: linear-gradient(135deg, #357abd 0%, #2563eb 100%);
    color: #fff;
}

.resource-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.resource-list li {
    padding: 10px 0;
    border-bottom: 1px solid #f0f0f0;
}

.resource-list li:last-child {
    border-bottom: none;
}

.resource-list a {
    color: #4a5568;
    text-decoration: none;
    font-size: 14px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 100%;
    transition: all 0.2s ease;
}

.resource-list a:before {
    content: '\f0c1';
    font-family: FontAwesome;
    margin-right: 8px;
    color: #2dd4bf;
    float: left;
}

.resource-list a:hover {
    color: #4a90d9;
}

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

.book-card img.img-responsive {
    border-radius: 8px;
    margin-bottom: 15px;
    border: 1px solid #e0e0e0;
}

.book-price {
    font-size: 24px;
    font-weight: 700;
    color: #166534;
    margin-bottom: 15px;
}

.btn-book {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 10px 25px;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 10px;
}

.btn-book:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    color: #fff;
}

.payment-icons {
    margin-top: 10px;
    max-width: 180px;
    margin-left: auto;
    margin-right: auto;
}

.secure-payment {
    font-size: 12px;
    color: #6c757d;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.secure-payment i {
    color: #b8860b;
}

.book-free-chapter {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.book-free-chapter p.small {
    font-size: 12px;
    color: #6c757d;
    margin-bottom: 10px;
}

.book-free-chapter .form-control {
    font-size: 13px;
    padding: 8px 12px;
    margin-bottom: 10px;
}

.book-free-chapter .btn-subscribe {
    font-size: 13px;
    padding: 8px;
}

.ai-coach-card {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border: 2px solid #2dd4bf;
}

.ai-coach-content {
    padding: 25px 20px;
    text-align: center;
}

.ai-coach-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

.ai-coach-icon i {
    font-size: 28px;
    color: #fff;
}

.ai-coach-title {
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 10px;
}

.ai-coach-desc {
    color: rgba(255,255,255,0.8);
    font-size: 13px;
    line-height: 1.5;
    margin: 0 0 20px;
}

.btn-ai-coach {
    background: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 100%);
    color: #fff;
    border: none;
    border-radius: 25px;
    padding: 12px 25px;
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(45, 212, 191, 0.3);
}

.btn-ai-coach:hover {
    background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(45, 212, 191, 0.4);
}

.btn-ai-coach i {
    font-size: 16px;
}

.certifications-section {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    margin-top: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.certifications-section .section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
}

.certifications-section .section-header i {
    color: #2dd4bf;
    font-size: 24px;
}

.certifications-section .section-header h2 {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    color: #1a1a2e;
}

.certification-card {
    padding: 20px 0;
    border-bottom: 1px solid #eee;
}

.certification-card:last-child {
    border-bottom: none;
}

.cert-title {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.cert-meta p,
.course-meta p {
    font-size: 13px;
    color: #6c757d;
    margin-bottom: 5px;
}

.course-desc p {
    font-size: 14px;
    line-height: 1.7;
    color: #4a5568;
    margin-top: 15px;
    margin-bottom: 0;
}

.btn-course {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: #fff;
    border-radius: 6px;
    padding: 8px 20px;
    font-size: 13px;
    font-weight: 600;
    margin-top: 10px;
    display: inline-block;
}

.btn-course:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    color: #fff;
}

.topic-courses-section {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.topic-courses-section .section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
}

.topic-courses-section .section-header i {
    font-size: 24px;
    color: #4a90d9;
}

.topic-courses-section .section-header h2 {
    margin: 0;
    font-size: 22px;
    color: #1a1a2e;
}

.topic-courses-section .section-intro {
    color: #6c757d;
    margin-bottom: 25px;
    font-size: 16px;
}

.topic-courses-section .course-card {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
}

.topic-courses-section .course-card:last-child {
    margin-bottom: 0;
}

.topic-courses-section .course-title {
    font-size: 18px;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.topic-courses-section .course-meta p {
    margin-bottom: 8px;
    font-size: 15px;
    color: #495057;
}

.topic-footer {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    border-left: 4px solid #2dd4bf;
}

.topic-footer p {
    font-size: 16px;
    line-height: 1.7;
    color: #495057;
    margin-bottom: 15px;
}

.topic-footer p:last-child {
    margin-bottom: 0;
}

.subtopics-card .sidebar-header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.subtopic-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.subtopic-list li {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

.subtopic-list li:last-child {
    border-bottom: none;
}

.subtopic-list a {
    color: #495057;
    font-size: 14px;
    text-decoration: none;
    display: block;
    transition: all 0.2s ease;
}

.subtopic-list a:hover {
    color: #4a90d9;
    padding-left: 5px;
}

.subtopic-list li.active {
    background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
    border-radius: 6px;
    margin: 5px -10px;
    padding: 10px;
}

.subtopic-list li.active a {
    color: #0369a1;
    font-weight: 600;
}

/* Topics page responsive styles */
@media (max-width: 991px) {
    .topic-content {
        padding: 40px 0;
    }
    
    .topic-intro {
        padding: 20px 25px;
    }
    
    .table-of-contents {
        padding: 20px 25px;
    }
    
    .toc-list {
        grid-template-columns: 1fr;
    }
    
    .question-card {
        padding: 20px 25px;
    }
    
    .topic-section .section-name {
        font-size: 22px;
    }
    
    .sidebar {
        position: static;
        margin-top: 30px;
    }
}

@media (max-width: 768px) {
    .topic-content {
        padding: 30px 0;
    }
    
    .topic-intro {
        padding: 18px 20px;
        margin-bottom: 25px;
    }
    
    .topic-intro p {
        font-size: 15px;
        line-height: 1.7;
    }
    
    .table-of-contents {
        padding: 18px 20px;
        margin-bottom: 25px;
    }
    
    .toc-header {
        margin-bottom: 15px;
        padding-bottom: 12px;
    }
    
    .toc-header span {
        font-size: 18px;
    }
    
    .toc-list a {
        padding: 10px 12px;
    }
    
    .toc-title {
        font-size: 14px;
    }
    
    .toc-count {
        font-size: 11px;
        padding: 2px 6px;
    }
    
    .topic-section {
        margin-bottom: 30px;
    }
    
    .topic-section .section-name {
        font-size: 20px;
        padding-bottom: 8px;
    }
    
    .topic-section .section-intro {
        font-size: 15px;
    }
    
    .question-card {
        padding: 18px 15px;
        margin-bottom: 15px;
    }

    .question-header {
        flex-direction: column;
        gap: 10px;
    }
    
    .question-number {
        font-size: 12px;
        padding: 5px 10px;
    }

    .question-text {
        font-size: 16px;
    }
    
    .question-tags {
        padding-left: 0;
    }
    
    .question-tags .tag {
        font-size: 11px;
        padding: 3px 8px;
    }

    .answer-content {
        padding-left: 0;
    }
    
    .answer-content p {
        font-size: 15px;
        line-height: 1.7;
    }
    
    .answer-content ul,
    .answer-content ol {
        font-size: 15px;
        line-height: 1.7;
        padding-left: 20px;
    }
    
    .answer-content li {
        font-size: 15px;
        line-height: 1.7;
        margin-bottom: 6px;
    }
    
    .code-block {
        padding: 15px;
        font-size: 13px;
    }
    
    .tips-box {
        padding: 12px 15px;
        gap: 12px;
    }
    
    .tip-icon {
        font-size: 18px;
    }
    
    .tips-content p {
        font-size: 14px;
    }

    .sidebar {
        position: static;
        margin-top: 30px;
    }
    
    .sidebar-header {
        padding: 12px 15px;
        font-size: 13px;
    }
    
    .sidebar-body {
        padding: 15px;
    }
    
    .subtopic-list a {
        font-size: 13px;
    }
    
    .ai-coach-card .ai-coach-title {
        font-size: 16px;
    }
    
    .ai-coach-card .ai-coach-desc {
        font-size: 13px;
    }
    
    .course-card,
    .certification-card {
        padding: 15px;
    }
    
    .course-title,
    .cert-title {
        font-size: 16px;
    }
    
    .course-meta p,
    .cert-meta p {
        font-size: 13px;
    }
    
    .course-desc p {
        font-size: 13px;
        margin-top: 12px;
    }
    
    /* Certifications and courses sections mobile 768px */
    .certifications-section,
    .topic-courses-section {
        padding: 20px;
        margin-top: 25px;
        border-radius: 10px;
    }
    
    .certifications-section .section-header,
    .topic-courses-section .section-header {
        gap: 10px;
        margin-bottom: 12px;
    }
    
    .certifications-section .section-header i,
    .topic-courses-section .section-header i {
        font-size: 20px;
    }
    
    .certifications-section .section-header h2,
    .topic-courses-section .section-header h2 {
        font-size: 18px;
    }
    
    .certifications-section .section-intro,
    .topic-courses-section .section-intro {
        font-size: 14px;
        margin-bottom: 20px;
    }
    
    .topic-courses-section .course-card {
        padding: 15px;
        margin-bottom: 15px;
    }
    
    .topic-courses-section .course-meta p {
        font-size: 13px;
        margin-bottom: 6px;
    }
    
    .certification-card {
        padding: 15px 0;
    }
    
    .topic-footer {
        padding: 20px;
        margin-bottom: 25px;
    }
    
    .topic-footer p {
        font-size: 14px;
        margin-bottom: 12px;
    }
    
    /* Book card and resource list mobile 768px */
    .book-card {
        padding: 15px;
    }
    
    .book-price {
        font-size: 20px;
        margin-bottom: 12px;
    }
    
    .btn-book {
        padding: 8px 20px;
        font-size: 14px;
    }
    
    .payment-icons {
        max-width: 150px;
    }
    
    .secure-payment {
        font-size: 11px;
    }
    
    .resource-list li {
        padding: 8px 0;
    }
    
    .resource-list a {
        font-size: 13px;
    }
    
    .book-free-chapter p.small {
        font-size: 11px;
    }
    
    .book-free-chapter .form-control {
        font-size: 12px;
        padding: 6px 10px;
    }
    
    .book-free-chapter .btn-subscribe {
        font-size: 12px;
        padding: 6px;
    }
}

@media (max-width: 480px) {
    .topic-content {
        padding: 20px 0;
    }
    
    .topic-intro {
        padding: 15px;
        margin-bottom: 20px;
        border-radius: 8px;
    }
    
    .topic-intro p {
        font-size: 14px;
    }
    
    .topic-section {
        margin-bottom: 25px;
    }
    
    .topic-section .section-name {
        font-size: 18px;
        padding-bottom: 6px;
    }
    
    .topic-section .section-intro {
        font-size: 14px;
    }
    
    .question-card {
        padding: 15px 12px;
        margin-bottom: 12px;
        border-radius: 8px;
    }
    
    .question-number {
        font-size: 11px;
        padding: 4px 8px;
    }
    
    .question-text {
        font-size: 15px;
        line-height: 1.4;
    }
    
    .question-tags .tag {
        font-size: 10px;
        padding: 2px 6px;
    }
    
    .answer-content p {
        font-size: 14px;
        margin-bottom: 12px;
    }
    
    .answer-content ul,
    .answer-content ol {
        font-size: 14px;
        line-height: 1.6;
        padding-left: 18px;
        margin-bottom: 12px;
    }
    
    .answer-content li {
        font-size: 14px;
        line-height: 1.6;
        margin-bottom: 5px;
    }
    
    .code-block {
        padding: 12px;
        font-size: 12px;
        border-radius: 6px;
    }
    
    .tips-box {
        padding: 10px 12px;
        gap: 10px;
        border-radius: 0 6px 6px 0;
    }
    
    .tip-icon {
        font-size: 16px;
    }
    
    .tips-content p {
        font-size: 13px;
    }
    
    .sidebar-card {
        border-radius: 8px;
        margin-bottom: 15px;
    }
    
    .sidebar-header {
        padding: 10px 12px;
        font-size: 12px;
    }
    
    .sidebar-header i {
        font-size: 14px;
    }
    
    .sidebar-body {
        padding: 12px;
    }
    
    .subtopic-list li {
        padding: 8px 0;
    }
    
    .subtopic-list a {
        font-size: 12px;
    }
    
    .ai-coach-card .ai-coach-icon {
        width: 50px;
        height: 50px;
    }
    
    .ai-coach-card .ai-coach-icon i {
        font-size: 22px;
    }
    
    .ai-coach-card .ai-coach-title {
        font-size: 15px;
    }
    
    .ai-coach-card .ai-coach-desc {
        font-size: 12px;
    }
    
    .btn-ai-coach {
        font-size: 13px;
        padding: 8px 16px;
    }
    
    .resource-list a {
        font-size: 12px;
    }
    
    .course-card,
    .certification-card {
        padding: 12px;
    }
    
    .course-title,
    .cert-title {
        font-size: 15px;
    }
    
    .course-meta p,
    .cert-meta p {
        font-size: 12px;
    }
    
    .course-desc p {
        font-size: 12px;
        line-height: 1.6;
        margin-top: 10px;
    }
    
    .btn-course {
        font-size: 12px;
        padding: 6px 12px;
    }
    
    /* Certifications and courses sections small mobile 480px */
    .certifications-section,
    .topic-courses-section {
        padding: 15px;
        margin-top: 20px;
        border-radius: 8px;
    }
    
    .certifications-section .section-header,
    .topic-courses-section .section-header {
        gap: 8px;
        margin-bottom: 10px;
    }
    
    .certifications-section .section-header i,
    .topic-courses-section .section-header i {
        font-size: 18px;
    }
    
    .certifications-section .section-header h2,
    .topic-courses-section .section-header h2 {
        font-size: 16px;
    }
    
    .certifications-section .section-intro,
    .topic-courses-section .section-intro {
        font-size: 13px;
        margin-bottom: 15px;
        line-height: 1.6;
    }
    
    .topic-courses-section .course-card {
        padding: 12px;
        margin-bottom: 12px;
        border-radius: 8px;
    }
    
    .topic-courses-section .course-meta p {
        font-size: 12px;
        margin-bottom: 4px;
    }
    
    .certification-card {
        padding: 12px 0;
    }
    
    .topic-footer {
        padding: 15px;
        margin-bottom: 20px;
        border-radius: 8px;
    }
    
    .topic-footer p {
        font-size: 13px;
        line-height: 1.6;
        margin-bottom: 10px;
    }
    
    /* Book card and resource list small mobile 480px */
    .book-card {
        padding: 12px;
    }
    
    .book-card img.img-responsive {
        margin-bottom: 12px;
    }
    
    .book-price {
        font-size: 18px;
        margin-bottom: 10px;
    }
    
    .btn-book {
        padding: 6px 16px;
        font-size: 13px;
    }
    
    .payment-icons {
        max-width: 130px;
        margin-top: 8px;
    }
    
    .secure-payment {
        font-size: 10px;
        gap: 4px;
    }
    
    .resource-list li {
        padding: 6px 0;
    }
    
    .resource-list a {
        font-size: 12px;
    }
    
    .resource-list a:before {
        font-size: 10px;
        margin-right: 6px;
    }
    
    .book-free-chapter {
        margin-top: 12px;
        padding-top: 12px;
    }
    
    .book-free-chapter p.small {
        font-size: 10px;
        margin-bottom: 8px;
    }
    
    .book-free-chapter .form-control {
        font-size: 11px;
        padding: 5px 8px;
        margin-bottom: 8px;
    }
    
    .book-free-chapter .btn-subscribe {
        font-size: 11px;
        padding: 5px;
    }
}

/* About Page Styles */
.about-content {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.about-section {
    background: #fff;
    border-radius: 12px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.about-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.about-icon i {
    color: #fff;
    font-size: 28px;
}

.about-icon.ai-icon {
    background: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 100%);
}

.about-title {
    font-size: 26px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 20px;
}

.about-section p {
    font-size: 17px;
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 20px;
}

.philosophy-box {
    background: linear-gradient(135deg, #f0fdfa 0%, #ccfbf1 100%);
    border-left: 4px solid #2dd4bf;
    border-radius: 0 12px 12px 0;
    padding: 25px 30px;
    margin: 25px 0;
}

.philosophy-quote {
    font-size: 22px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.philosophy-quote i {
    color: #2dd4bf;
    font-size: 16px;
}

.philosophy-text {
    font-size: 16px;
    color: #4a5568;
    margin: 0;
    font-style: italic;
}

.about-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.about-features li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 12px 0;
    font-size: 16px;
    color: #4a5568;
}

.about-features li i {
    color: #2dd4bf;
    font-size: 18px;
    margin-top: 3px;
}

.ai-section {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border: 2px solid #2dd4bf;
}

.ai-section .about-title {
    color: #fff;
}

.ai-section p {
    color: rgba(255,255,255,0.8);
}

.ai-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin: 30px 0;
}

.ai-feature {
    background: rgba(255,255,255,0.05);
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    transition: all 0.3s ease;
}

.ai-feature:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-3px);
}

.ai-feature i {
    color: #2dd4bf;
    font-size: 32px;
    margin-bottom: 15px;
}

.ai-feature h4 {
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.ai-feature p {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    margin: 0;
    line-height: 1.6;
}

.ai-cta {
    text-align: center;
    margin-top: 30px;
}

.btn-ai-primary {
    background: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 100%);
    color: #1a1a2e;
    border: none;
    padding: 15px 35px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.btn-ai-primary:hover {
    background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%);
    color: #1a1a2e;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(45, 212, 191, 0.4);
}

.ai-note {
    display: block;
    color: rgba(255,255,255,0.6);
    font-size: 13px;
    margin-top: 12px;
}

.resource-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-top: 25px;
}

.resource-card {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    transition: all 0.3s ease;
}

.resource-card:hover {
    background: #e9ecef;
    transform: translateY(-3px);
}

.resource-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

.resource-icon i {
    color: #fff;
    font-size: 24px;
}

.resource-card h4 {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 10px;
}

.resource-card p {
    font-size: 14px;
    color: #6c757d;
    margin: 0;
    line-height: 1.6;
}

.cta-section {
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    text-align: center;
}

.cta-title {
    color: #fff;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 15px;
}

.cta-text {
    color: rgba(255,255,255,0.9);
    font-size: 18px;
    margin-bottom: 30px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.cta-buttons .btn-primary {
    background: #fff;
    color: #4a90d9;
    border: none;
    padding: 14px 30px;
    font-weight: 600;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.cta-buttons .btn-primary:hover {
    background: #f8f9fa;
    color: #357abd;
}

.btn-ai-outline {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
    padding: 12px 28px;
    font-weight: 600;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.btn-ai-outline:hover {
    background: #fff;
    color: #4a90d9;
    text-decoration: none;
}

/* About Page Mobile Styles */
@media (max-width: 768px) {
    .about-content {
        padding: 40px 0;
    }
    
    .about-section {
        padding: 25px 20px;
        margin-bottom: 20px;
    }
    
    .about-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 20px;
    }
    
    .about-icon i {
        font-size: 24px;
    }
    
    .about-title {
        font-size: 22px;
        margin-bottom: 15px;
    }
    
    .about-section p {
        font-size: 15px;
    }
    
    .philosophy-box {
        padding: 20px;
    }
    
    .philosophy-quote {
        font-size: 18px;
    }
    
    .philosophy-text {
        font-size: 14px;
    }
    
    .about-features li {
        font-size: 14px;
        padding: 10px 0;
    }
    
    .ai-features-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .ai-feature {
        padding: 20px;
    }
    
    .ai-feature i {
        font-size: 28px;
    }
    
    .ai-feature h4 {
        font-size: 16px;
    }
    
    .ai-feature p {
        font-size: 13px;
    }
    
    .resource-cards {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .resource-card {
        padding: 20px;
    }
    
    .resource-icon {
        width: 50px;
        height: 50px;
    }
    
    .resource-icon i {
        font-size: 20px;
    }
    
    .resource-card h4 {
        font-size: 16px;
    }
    
    .resource-card p {
        font-size: 13px;
    }
    
    .cta-title {
        font-size: 22px;
    }
    
    .cta-text {
        font-size: 15px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .about-content {
        padding: 30px 0;
    }
    
    .about-section {
        padding: 20px 15px;
        border-radius: 10px;
    }
    
    .about-icon {
        width: 50px;
        height: 50px;
    }
    
    .about-icon i {
        font-size: 20px;
    }
    
    .about-title {
        font-size: 20px;
    }
    
    .about-section p {
        font-size: 14px;
        line-height: 1.7;
    }
    
    .philosophy-box {
        padding: 15px;
    }
    
    .philosophy-quote {
        font-size: 16px;
        flex-wrap: wrap;
    }
    
    .philosophy-text {
        font-size: 13px;
    }
    
    .about-features li {
        font-size: 13px;
        gap: 12px;
    }
    
    .about-features li i {
        font-size: 16px;
    }
    
    .ai-feature {
        padding: 15px;
    }
    
    .ai-feature i {
        font-size: 24px;
        margin-bottom: 10px;
    }
    
    .ai-feature h4 {
        font-size: 15px;
    }
    
    .ai-feature p {
        font-size: 12px;
    }
    
    .btn-ai-primary {
        padding: 12px 25px;
        font-size: 14px;
    }
    
    .ai-note {
        font-size: 12px;
    }
    
    .resource-card {
        padding: 15px;
    }
    
    .resource-icon {
        width: 45px;
        height: 45px;
    }
    
    .resource-icon i {
        font-size: 18px;
    }
    
    .resource-card h4 {
        font-size: 15px;
    }
    
    .resource-card p {
        font-size: 12px;
    }
    
    .cta-title {
        font-size: 18px;
    }
    
    .cta-text {
        font-size: 14px;
    }
    
    .cta-buttons .btn-primary,
    .btn-ai-outline {
        padding: 10px 20px;
        font-size: 14px;
    }
}

/* Contact Page Styles */
.contact-content {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.contact-intro {
    text-align: center;
    margin-bottom: 40px;
}

.contact-intro p {
    font-size: 18px;
    color: #4a5568;
    line-height: 1.7;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-bottom: 40px;
}

.contact-card {
    background: #fff;
    border-radius: 12px;
    padding: 30px 25px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.contact-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.contact-icon i {
    color: #fff;
    font-size: 28px;
}

.contact-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.contact-detail {
    font-size: 17px;
    color: #4a90d9;
    font-weight: 500;
    margin-bottom: 8px;
}

.contact-detail a {
    color: #4a90d9;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-detail a:hover {
    color: #2dd4bf;
}

.contact-note {
    font-size: 14px;
    color: #6c757d;
    margin: 0;
}

.contact-address p {
    font-size: 15px;
    color: #4a5568;
    margin: 5px 0;
    line-height: 1.6;
}

.contact-section {
    background: #fff;
    border-radius: 12px;
    padding: 40px;
    margin-bottom: 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.contact-section-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.contact-section-icon i {
    color: #fff;
    font-size: 24px;
}

.contact-section h2 {
    font-size: 24px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.contact-section p {
    font-size: 16px;
    color: #4a5568;
    line-height: 1.7;
    margin-bottom: 20px;
}

.contact-resources {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.contact-resource {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, #4a90d9 0%, #357abd 100%);
    color: #fff;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.contact-resource:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 217, 0.4);
    color: #fff;
    text-decoration: none;
}

.contact-resource i {
    font-size: 16px;
}

.partnership-section {
    border-left: 4px solid #2dd4bf;
}

.partnership-list {
    list-style: none;
    padding: 0;
    margin: 0 0 20px;
}

.partnership-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 16px;
    color: #4a5568;
}

.partnership-list li i {
    color: #2dd4bf;
    font-size: 16px;
}

.partnership-cta {
    font-size: 16px;
    color: #4a5568;
}

.partnership-cta a {
    color: #4a90d9;
    font-weight: 600;
    text-decoration: none;
}

.partnership-cta a:hover {
    color: #2dd4bf;
}

/* Contact Page Mobile Styles */
@media (max-width: 768px) {
    .contact-content {
        padding: 40px 0;
    }
    
    .contact-intro p {
        font-size: 16px;
    }
    
    .contact-cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .contact-card {
        padding: 25px 20px;
    }
    
    .contact-icon {
        width: 60px;
        height: 60px;
    }
    
    .contact-icon i {
        font-size: 24px;
    }
    
    .contact-card h3 {
        font-size: 18px;
    }
    
    .contact-detail {
        font-size: 15px;
    }
    
    .contact-section {
        padding: 25px 20px;
    }
    
    .contact-section-icon {
        width: 50px;
        height: 50px;
    }
    
    .contact-section-icon i {
        font-size: 20px;
    }
    
    .contact-section h2 {
        font-size: 20px;
    }
    
    .contact-section p {
        font-size: 15px;
    }
    
    .contact-resources {
        flex-direction: column;
    }
    
    .contact-resource {
        justify-content: center;
        padding: 12px 20px;
        font-size: 14px;
    }
    
    .partnership-list li {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .contact-content {
        padding: 30px 0;
    }
    
    .contact-intro {
        margin-bottom: 30px;
    }
    
    .contact-intro p {
        font-size: 14px;
    }
    
    .contact-card {
        padding: 20px 15px;
    }
    
    .contact-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 15px;
    }
    
    .contact-icon i {
        font-size: 20px;
    }
    
    .contact-card h3 {
        font-size: 16px;
        margin-bottom: 12px;
    }
    
    .contact-detail {
        font-size: 14px;
    }
    
    .contact-note {
        font-size: 12px;
    }
    
    .contact-address p {
        font-size: 13px;
    }
    
    .contact-section {
        padding: 20px 15px;
        border-radius: 10px;
    }
    
    .contact-section-icon {
        width: 45px;
        height: 45px;
    }
    
    .contact-section-icon i {
        font-size: 18px;
    }
    
    .contact-section h2 {
        font-size: 18px;
    }
    
    .contact-section p {
        font-size: 14px;
    }
    
    .contact-resource {
        padding: 10px 16px;
        font-size: 13px;
    }
    
    .partnership-list li {
        font-size: 13px;
        gap: 10px;
    }
    
    .partnership-cta {
        font-size: 14px;
    }
}

/* Legal Pages Styles (Privacy, Terms) */
.legal-content {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.legal-section {
    background: #fff;
    border-radius: 12px;
    padding: 35px 40px;
    margin-bottom: 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.legal-section h2 {
    font-size: 24px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid #e9ecef;
}

.legal-section h3 {
    font-size: 18px;
    font-weight: 600;
    color: #2d3748;
    margin-top: 25px;
    margin-bottom: 12px;
}

.legal-section p {
    font-size: 16px;
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 15px;
}

.legal-section ul {
    list-style: none;
    padding: 0;
    margin: 0 0 20px;
}

.legal-section ul li {
    position: relative;
    padding: 8px 0 8px 25px;
    font-size: 15px;
    line-height: 1.7;
    color: #4a5568;
}

.legal-section ul li:before {
    content: '\f00c';
    font-family: 'FontAwesome';
    position: absolute;
    left: 0;
    top: 10px;
    color: #2dd4bf;
    font-size: 12px;
}

.legal-section ul li strong {
    color: #1a1a2e;
}

.legal-section a {
    color: #4a90d9;
    text-decoration: none;
    transition: color 0.3s ease;
}

.legal-section a:hover {
    color: #2dd4bf;
}

/* Legal Pages Mobile Styles */
@media (max-width: 768px) {
    .legal-content {
        padding: 40px 0;
    }
    
    .legal-section {
        padding: 25px 20px;
        margin-bottom: 20px;
    }
    
    .legal-section h2 {
        font-size: 20px;
        margin-bottom: 15px;
    }
    
    .legal-section h3 {
        font-size: 16px;
        margin-top: 20px;
    }
    
    .legal-section p {
        font-size: 15px;
    }
    
    .legal-section ul li {
        font-size: 14px;
        padding-left: 22px;
    }
}

@media (max-width: 480px) {
    .legal-content {
        padding: 30px 0;
    }
    
    .legal-section {
        padding: 20px 15px;
        border-radius: 10px;
    }
    
    .legal-section h2 {
        font-size: 18px;
    }
    
    .legal-section h3 {
        font-size: 15px;
    }
    
    .legal-section p {
        font-size: 14px;
        line-height: 1.7;
    }
    
    .legal-section ul li {
        font-size: 13px;
        padding-left: 20px;
    }
    
    .legal-section ul li:before {
        font-size: 10px;
    }
}

/* Dynamic Topics Section */
.dynamic-topics-section {
    background: linear-gradient(135deg, #1a2332 0%, #2d3a4d 100%);
    padding: 40px 0;
    margin-bottom: 0;
}

.dynamic-topics-section .section-heading {
    color: #fff;
    margin-bottom: 10px;
}

.dynamic-topics-section .section-heading i {
    color: #14b8a6;
}

.dynamic-topics-section .section-desc {
    color: #94a3b8;
    margin-bottom: 30px;
    font-size: 16px;
}

.dynamic-topic-card {
    display: block;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.dynamic-topic-card:hover {
    transform: translateY(-3px);
    border-color: #14b8a6;
    box-shadow: 0 8px 25px rgba(20, 184, 166, 0.2);
    text-decoration: none;
}

.dynamic-topic-card .topic-name {
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 10px 0;
}

.dynamic-topic-card:hover .topic-name {
    color: #14b8a6;
}

.dynamic-topic-card .question-badge {
    display: inline-block;
    background: rgba(20, 184, 166, 0.15);
    color: #14b8a6;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

.dynamic-topic-card .question-badge i {
    margin-right: 5px;
}

/* KaTeX Math Equation Styling */
.katex {
    font-size: 1.1em;
}

.katex-display {
    margin: 1.5em 0;
    padding: 1em;
    background-color: #f8f9fa;
    border-left: 3px solid #2dd4bf;
    border-radius: 4px;
    overflow-x: auto;
}

.katex-display > .katex {
    text-align: left;
}

.answer-content .katex-display {
    background-color: #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

/* Inline math styling */
.answer-content .katex {
    color: #1a1a2e;
}

/* Progressive Unlock Styles */
.unlock-cta-card {
    background: linear-gradient(135deg, #1a2332 0%, #2d3a4d 100%);
    border-radius: 16px;
    padding: 40px;
    margin: 30px 0;
    text-align: center;
    border: 2px solid #14b8a6;
    box-shadow: 0 10px 40px rgba(20, 184, 166, 0.2);
}

.unlock-content {
    max-width: 500px;
    margin: 0 auto;
}

.unlock-icon {
    font-size: 48px;
    color: #14b8a6;
    margin-bottom: 20px;
    display: block;
}

.unlock-title {
    color: #fff;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 15px;
}

.unlock-desc {
    color: #94a3b8;
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 25px;
}

.unlock-pricing {
    margin-bottom: 25px;
}

.unlock-pricing .original-price {
    color: #64748b;
    font-size: 18px;
    text-decoration: line-through;
    margin-right: 12px;
}

.unlock-pricing .sale-price {
    color: #14b8a6;
    font-size: 32px;
    font-weight: 700;
}

.btn-unlock {
    background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%);
    color: #fff;
    border: none;
    padding: 16px 40px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-unlock:hover {
    background: linear-gradient(135deg, #0d9488 0%, #0f766e 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(20, 184, 166, 0.4);
    color: #fff;
    text-decoration: none;
}

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

/* Locked Answer Styles */
.question-card.locked-answer {
    position: relative;
}

.answer-content.answer-locked {
    position: relative;
    min-height: 120px;
    background: linear-gradient(to bottom, #f8f9fa 0%, #e2e8f0 100%);
    border-radius: 8px;
    overflow: hidden;
}

.locked-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(248, 249, 250, 0.95);
    backdrop-filter: blur(4px);
    gap: 10px;
}

.locked-overlay i.fa-lock {
    font-size: 32px;
    color: #94a3b8;
    margin-bottom: 10px;
}

.locked-overlay .locked-message {
    color: #475569;
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 15px;
}

.btn-unlock-small {
    background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%);
    color: #fff;
    border: none;
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 25px;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-unlock-small:hover {
    background: linear-gradient(135deg, #0d9488 0%, #0f766e 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(20, 184, 166, 0.3);
    color: #fff;
    text-decoration: none;
}

.btn-unlock-small i {
    margin-right: 6px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .unlock-cta-card {
        padding: 30px 20px;
        margin: 20px 0;
    }
    
    .unlock-icon {
        font-size: 36px;
    }
    
    .unlock-title {
        font-size: 22px;
    }
    
    .unlock-desc {
        font-size: 14px;
    }
    
    .unlock-pricing .sale-price {
        font-size: 26px;
    }
    
    .btn-unlock {
        padding: 14px 30px;
        font-size: 16px;
    }
}

/* =========================================
   BLOG STYLES
   ========================================= */

.blog-header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 60px 0 40px;
    margin-bottom: 40px;
    margin-top: -20px;
    margin-left: -15px;
    margin-right: -15px;
}

.blog-title {
    color: #fff;
    font-family: 'Poppins', sans-serif;
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
}

.blog-subtitle {
    color: rgba(255, 255, 255, 0.8);
    font-size: 18px;
    max-width: 600px;
}

.blog-container {
    padding: 20px 0 60px;
}

.blog-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    margin-bottom: 30px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.blog-card-image img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.blog-card-content {
    padding: 25px;
}

.blog-category {
    display: inline-block;
    background: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 100%);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 12px;
}

.blog-card-title {
    font-family: 'Poppins', sans-serif;
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.4;
}

.blog-card-title a {
    color: #1a1a2e;
    text-decoration: none;
    transition: color 0.2s;
}

.blog-card-title a:hover {
    color: #2dd4bf;
}

.blog-card-excerpt {
    color: #666;
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 15px;
}

.blog-card-meta {
    display: flex;
    gap: 20px;
    color: #888;
    font-size: 13px;
    margin-bottom: 15px;
}

.blog-card-meta i {
    margin-right: 5px;
    color: #2dd4bf;
}

.btn-read-more {
    background: transparent;
    color: #2dd4bf;
    border: 2px solid #2dd4bf;
    padding: 8px 20px;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-read-more:hover {
    background: #2dd4bf;
    color: #fff;
}

.btn-read-more i {
    margin-left: 8px;
}

.no-posts {
    text-align: center;
    padding: 60px 20px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.no-posts i {
    color: #ccc;
    margin-bottom: 20px;
}

.no-posts h3 {
    color: #333;
    margin-bottom: 10px;
}

.no-posts p {
    color: #666;
}

.blog-pagination {
    margin-top: 30px;
    text-align: center;
}

.blog-pagination .pagination {
    display: inline-flex;
    gap: 5px;
}

.blog-pagination .pagination li a {
    background: #fff;
    color: #333;
    border: 1px solid #ddd;
    padding: 8px 15px;
    border-radius: 6px;
    transition: all 0.2s;
}

.blog-pagination .pagination li.active a,
.blog-pagination .pagination li a:hover {
    background: #2dd4bf;
    color: #fff;
    border-color: #2dd4bf;
}

.blog-sidebar {
    position: sticky;
    top: 80px;
}

.sidebar-widget {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    padding: 25px;
    margin-bottom: 25px;
}

.widget-title {
    font-family: 'Poppins', sans-serif;
    font-size: 18px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f0f0f0;
}

.widget-title i {
    color: #2dd4bf;
    margin-right: 8px;
}

.widget-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.widget-list li {
    margin-bottom: 12px;
}

.widget-list li a {
    color: #555;
    text-decoration: none;
    transition: color 0.2s;
    display: flex;
    align-items: center;
}

.widget-list li a:before {
    content: "\f105";
    font-family: FontAwesome;
    margin-right: 10px;
    color: #2dd4bf;
}

.widget-list li a:hover {
    color: #2dd4bf;
}

.quick-tips p {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 14px;
    color: #555;
}

.quick-tips i {
    color: #2dd4bf;
    margin-top: 3px;
}

.sidebar-cta {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.sidebar-cta .widget-title {
    color: #fff;
    border-bottom-color: rgba(255, 255, 255, 0.2);
}

.sidebar-cta p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

.btn-ai-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 100%);
    color: #fff;
    padding: 12px 25px;
    border-radius: 25px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-ai-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(45, 212, 191, 0.4);
    color: #fff;
    text-decoration: none;
}

/* Blog Post Single */
.blog-post-header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 40px 0;
    margin-bottom: 40px;
    margin-top: -20px;
    margin-left: -15px;
    margin-right: -15px;
}

.breadcrumb-nav .breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 20px;
}

.breadcrumb-nav .breadcrumb li {
    color: rgba(255, 255, 255, 0.6);
}

.breadcrumb-nav .breadcrumb li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.breadcrumb-nav .breadcrumb li a:hover {
    color: #2dd4bf;
}

.breadcrumb-nav .breadcrumb > li + li:before {
    color: rgba(255, 255, 255, 0.4);
}

.breadcrumb-nav .breadcrumb li.active {
    color: #fff;
}

.blog-post-header .blog-category {
    margin-bottom: 15px;
}

.blog-post-title {
    color: #fff;
    font-family: 'Poppins', sans-serif;
    font-size: 36px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
}

.blog-post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

.blog-post-meta i {
    color: #2dd4bf;
    margin-right: 6px;
}

.blog-tags .blog-tag {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.blog-tags .blog-tag:hover {
    color: #2dd4bf;
}

.blog-post-container {
    padding-bottom: 60px;
}

.blog-post-featured-image {
    margin-bottom: 30px;
    border-radius: 12px;
    overflow: hidden;
}

.blog-post-featured-image img {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
}

.blog-post-content {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    padding: 40px;
    font-size: 17px;
    line-height: 1.8;
}

.blog-post-content h2 {
    font-family: 'Poppins', sans-serif;
    font-size: 28px;
    font-weight: 600;
    color: #1a1a2e;
    margin: 35px 0 20px;
}

.blog-post-content h3 {
    font-family: 'Poppins', sans-serif;
    font-size: 22px;
    font-weight: 600;
    color: #1a1a2e;
    margin: 30px 0 15px;
}

.blog-post-content p {
    margin-bottom: 20px;
}

.blog-post-content ul, .blog-post-content ol {
    margin-bottom: 20px;
    padding-left: 25px;
}

.blog-post-content li {
    margin-bottom: 10px;
}

.blog-post-content blockquote {
    background: #f8f9fa;
    border-left: 4px solid #2dd4bf;
    padding: 20px 25px;
    margin: 25px 0;
    font-style: italic;
    color: #555;
}

.blog-post-content a {
    color: #2dd4bf;
    text-decoration: none;
}

.blog-post-content a:hover {
    text-decoration: underline;
}

.blog-post-share {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    padding: 25px;
    margin-top: 30px;
}

.blog-post-share h4 {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.share-buttons {
    display: flex;
    gap: 12px;
}

.share-btn {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #fff;
    font-size: 18px;
    transition: transform 0.2s;
}

.share-btn:hover {
    transform: scale(1.1);
    color: #fff;
}

.share-twitter {
    background: #1da1f2;
}

.share-linkedin {
    background: #0077b5;
}

.share-facebook {
    background: #4267b2;
}

.blog-post-nav {
    margin-top: 30px;
}

.btn-back {
    background: #fff;
    color: #333;
    border: 2px solid #ddd;
    padding: 10px 25px;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-back:hover {
    border-color: #2dd4bf;
    color: #2dd4bf;
}

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

/* Blog responsive */
@media (max-width: 768px) {
    .blog-header {
        padding: 40px 0 30px;
    }
    
    .blog-title {
        font-size: 32px;
    }
    
    .blog-subtitle {
        font-size: 16px;
    }
    
    .blog-card-image img {
        height: 180px;
    }
    
    .blog-card-title {
        font-size: 20px;
    }
    
    .blog-card-meta {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .blog-sidebar {
        margin-top: 40px;
        position: static;
    }
    
    .blog-post-title {
        font-size: 28px;
    }
    
    .blog-post-content {
        padding: 25px;
    }
    
    .blog-post-meta {
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .blog-title {
        font-size: 26px;
    }
    
    .blog-post-title {
        font-size: 24px;
    }
    
    .blog-post-content {
        padding: 20px;
        font-size: 16px;
    }
    
    .blog-post-content h2 {
        font-size: 22px;
    }
    
    .blog-post-content h3 {
        font-size: 18px;
    }
}

/* Spoke Content Pages Styles */
.spoke-content-section {
    padding: 40px 0 60px;
}

.content-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    padding: 35px 40px;
    margin-bottom: 30px;
}

.content-introduction {
    font-size: 18px;
    line-height: 1.8;
    color: #444;
    margin-bottom: 30px;
    padding-bottom: 25px;
    border-bottom: 1px solid #eee;
}

.content-section {
    margin-bottom: 30px;
}

.content-section p {
    font-size: 18px;
    line-height: 1.8;
    color: #444;
}

.content-section h2 {
    font-size: 24px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #4a90d9;
    display: inline-block;
}

.salary-table-section {
    margin: 30px 0;
    padding: 30px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 12px;
    border: 1px solid #dee2e6;
}

.salary-table-section .section-heading {
    font-size: 22px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.salary-table-section .section-heading i {
    color: #27ae60;
    font-size: 20px;
}

.salary-table {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    margin-bottom: 0;
}

.salary-table thead th {
    background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
    color: #fff;
    font-weight: 600;
    font-size: 15px;
    padding: 16px 20px;
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.salary-table tbody tr {
    transition: background-color 0.2s ease;
}

.salary-table tbody tr:hover {
    background-color: #f0f7ff;
}

.salary-table tbody td {
    padding: 18px 20px;
    vertical-align: middle;
    font-size: 15px;
    color: #444;
    border-bottom: 1px solid #eee;
}

.salary-table tbody tr:last-child td {
    border-bottom: none;
}

.salary-table .level-cell {
    font-weight: 600;
    font-size: 15px;
    color: #1a1a2e;
    white-space: nowrap;
}

.salary-table .range-cell,
.salary-table tbody td.range-cell {
    color: #27ae60 !important;
    font-size: 15px !important;
    font-weight: 700 !important;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif !important;
    font-style: normal !important;
    letter-spacing: 0 !important;
}

.salary-table .range-value {
    color: #27ae60;
    font-size: 15px;
    font-weight: 700;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

.salary-table .range-separator {
    color: #27ae60;
    font-size: 15px;
    font-weight: 700;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

.region-selector {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding: 15px 20px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 10px;
    border: 1px solid #dee2e6;
}

.region-selector label {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: #1a1a2e;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.region-selector label i {
    color: #00bfa5;
    font-size: 18px;
}

.region-selector select {
    max-width: 220px;
    border-radius: 8px;
    border: 2px solid #dee2e6;
    padding: 8px 12px;
    font-size: 14px;
    font-weight: 500;
    color: #1a1a2e;
    background: white;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.region-selector select:focus {
    border-color: #00bfa5;
    box-shadow: 0 0 0 3px rgba(0, 191, 165, 0.15);
    outline: none;
}

.region-selector select:hover {
    border-color: #00bfa5;
}

.region-salary-table {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

.tips-section {
    margin-top: 30px;
    padding: 25px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 10px;
    border-left: 4px solid #4a90d9;
}

.tips-section .section-heading {
    font-size: 22px;
}

.tips-section .section-heading i {
    font-size: 20px;
}

.tips-list {
    list-style: none;
    padding: 0;
    margin: 15px 0 0;
}

.tips-list li {
    padding: 10px 0;
    font-size: 16px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.tips-list li i {
    color: #27ae60;
    margin-top: 4px;
}

.hub-cta-section {
    margin: 40px 0 20px;
    padding: 32px 36px;
    background: linear-gradient(135deg, #f0f7ff 0%, #e8f4f8 100%);
    border-left: 4px solid #1a7abf;
    border-radius: 6px;
}

.hub-cta-section .section-heading {
    font-size: 22px;
}

.hub-cta-section .section-heading i {
    font-size: 20px;
}

.hub-cta-body {
    font-size: 17px;
    line-height: 1.8;
    color: #444;
    margin-bottom: 12px;
}

.hub-cta-buttons {
    margin-top: 24px;
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.hub-cta-btn {
    font-size: 15px;
    padding: 10px 22px;
}

.questions-to-ask-section {
    margin-top: 30px;
}

.questions-to-ask-section .spoke-questions-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 20px;
}

.questions-to-ask-section .spoke-question-card {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.questions-to-ask-section .spoke-question-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}

.spoke-question-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: #4a90d9;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
}

.spoke-question-content {
    flex: 1;
}

.spoke-question-text {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 10px;
}

.spoke-question-purpose {
    color: #555;
    margin-bottom: 8px;
    font-size: 15px;
}

.spoke-question-tip {
    color: #4a90d9;
    font-size: 14px;
    font-style: italic;
}

.spoke-question-tip i {
    margin-right: 5px;
}

/* Spoke page sidebar (scoped to spoke content section) */
.spoke-content-section .sidebar {
    position: sticky;
    top: 80px;
}

.spoke-content-section .sidebar-card {
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.spoke-content-section .sidebar-title {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #eee;
}

.spoke-content-section .sidebar-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.spoke-content-section .sidebar-list li {
    margin-bottom: 12px;
}

.spoke-content-section .sidebar-list li a {
    color: #555;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: color 0.2s;
}

.spoke-content-section .sidebar-list li a:hover {
    color: #4a90d9;
}

.spoke-content-section .sidebar-list li a i {
    width: 20px;
    text-align: center;
}

.spoke-content-section .cta-card {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
    padding: 25px;
}

.spoke-content-section .cta-card .sidebar-title {
    color: #fff;
    border-bottom-color: rgba(255,255,255,0.2);
}

.spoke-content-section .cta-card p {
    color: rgba(255,255,255,0.85);
    margin-bottom: 15px;
}

.breadcrumb-nav {
    margin-bottom: 20px;
}

.breadcrumb-nav .breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
}

.breadcrumb-nav .breadcrumb-item a {
    color: rgba(255,255,255,0.7);
}

.breadcrumb-nav .breadcrumb-item a:hover {
    color: #fff;
}

.breadcrumb-nav .breadcrumb-item.active {
    color: rgba(255,255,255,0.9);
}

.breadcrumb-nav .breadcrumb-item + .breadcrumb-item::before {
    content: "/";
    color: rgba(255,255,255,0.5);
}

/* Spoke content admin styles */
.spoke-content-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    margin-bottom: 10px;
}

.spoke-content-info h5 {
    margin: 0 0 5px;
    font-weight: 600;
}

.spoke-content-info small {
    color: #666;
}

.spoke-type-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    margin-left: 10px;
}

.spoke-type-badge.salary {
    background: #d4edda;
    color: #155724;
}

.spoke-type-badge.what_to_wear {
    background: #fff3cd;
    color: #856404;
}

.spoke-type-badge.questions_to_ask {
    background: #cce5ff;
    color: #004085;
}

@media (max-width: 991px) {
    .spoke-content-section .sidebar {
        position: static;
        margin-top: 30px;
    }
}

@media (max-width: 768px) {
    .content-card {
        padding: 25px;
    }
    
    .questions-to-ask-section .spoke-question-card {
        flex-direction: column;
        gap: 15px;
    }
    
    .spoke-question-number {
        width: 35px;
        height: 35px;
        font-size: 14px;
    }
    
    .salary-table-section {
        padding: 20px;
        margin: 20px 0;
    }
    
    .salary-table-section .section-heading {
        font-size: 18px;
    }
    
    .salary-table thead th {
        font-size: 13px;
        padding: 12px 15px;
    }
    
    .salary-table tbody td {
        font-size: 14px;
        padding: 14px 15px;
    }
    
    .salary-table .level-cell {
        font-size: 14px;
    }
    
    .salary-table .range-cell {
        font-size: 14px;
    }
}

/* Spoke Links in Sidebar */
.spoke-links-card .sidebar-header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
    padding: 12px 15px;
    border-radius: 0;
}

.spoke-links-card .sidebar-header i {
    margin-right: 8px;
}

.spoke-link-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.spoke-link-list li {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

.spoke-link-list li:last-child {
    border-bottom: none;
}

.spoke-link-list li a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #495057;
    font-size: 14px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.spoke-link-list li a:hover {
    color: #4a90d9;
    padding-left: 5px;
}

.spoke-link-list li a i {
    width: 20px;
    text-align: center;
    color: #4a90d9;
}

.spoke-link-active {
    background: #eef4fd;
    border-radius: 6px;
}

.spoke-link-current {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #2563eb;
    font-size: 14px;
    font-weight: 600;
    padding: 3px 6px;
    cursor: default;
}

.spoke-link-current i {
    width: 20px;
    text-align: center;
    color: #2563eb;
}

/* Education Spoke Page */
.edu-section {
    margin-bottom: 40px;
    padding-top: 10px;
}

.edu-section-heading {
    font-size: 22px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 3px solid #4a90d9;
    display: flex;
    align-items: center;
    gap: 10px;
}

.edu-section-heading i {
    color: #4a90d9;
}

.sub-section-heading {
    font-size: 17px;
    font-weight: 600;
    color: #2c3e50;
    margin: 20px 0 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.degree-card {
    background: #f8f9ff;
    border: 1px solid #d0dff5;
    border-left: 4px solid #4a90d9;
    border-radius: 8px;
    padding: 16px 20px;
    margin-bottom: 16px;
}

.degree-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.degree-header i {
    color: #4a90d9;
    font-size: 18px;
}

.degree-level {
    font-size: 15px;
    font-weight: 700;
    color: #1a1a2e;
}

.degree-majors {
    margin-bottom: 10px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
}

.majors-label {
    font-size: 13px;
    font-weight: 600;
    color: #555;
}

.major-tag {
    background: #e3eeff;
    color: #2563eb;
    border-radius: 20px;
    padding: 2px 12px;
    font-size: 13px;
    font-weight: 500;
}

.degree-desc {
    color: #555;
    font-size: 15px;
    margin: 0;
    line-height: 1.6;
}

.edu-section .section-intro {
    margin-bottom: 20px;
}

.edu-section .section-intro p {
    color: #444;
    font-size: inherit;
    line-height: 1.75;
    margin-bottom: 12px;
}

.edu-section .section-intro p:last-child {
    margin-bottom: 0;
}

.university-table-section {
    margin-top: 24px;
}

.edu-table {
    font-size: 15px;
}

.edu-table thead th {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    border: none;
}

.edu-table tbody tr:hover {
    background: #f0f6ff;
}

.edu-table .rank-col {
    width: 40px;
    font-weight: 700;
    color: #4a90d9;
    text-align: center;
}

.edu-table .ranking-col {
    width: 100px;
    font-size: 15px;
    color: #777;
}

.edu-table .desc-col {
    color: #555;
    font-size: 15px;
}

.edu-table a {
    color: #2563eb;
    font-weight: 500;
    text-decoration: none;
}

.edu-table a:hover {
    text-decoration: underline;
}

.ext-link-icon {
    font-size: 10px;
    margin-left: 4px;
    opacity: 0.6;
    vertical-align: super;
}

.platform-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.platform-coursera {
    background: #e8f4fd;
    color: #0056d3;
}

.platform-udemy {
    background: #fdf0e8;
    color: #a435f0;
}

.platform-other {
    background: #f0f0f0;
    color: #555;
}

/* =============================================
   SKILLS SPOKE PAGE
   ============================================= */
.skills-hero {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e8f4f8;
}
.skills-hero h1 {
    font-size: 26px;
    font-weight: 700;
    color: #1a2b3c;
    margin-bottom: 15px;
}
.skills-intro {
    font-size: 15px;
    line-height: 1.75;
    color: #444;
    margin-bottom: 12px;
}
.skills-section {
    margin-bottom: 40px;
}
.skills-section-heading {
    font-size: 20px;
    font-weight: 700;
    color: #1a2b3c;
    margin-bottom: 6px;
    padding-bottom: 8px;
    border-bottom: 2px solid #e8f4f8;
}
.skills-section-intro {
    font-size: 17px;
    color: #666;
    margin-bottom: 20px;
}
.skill-category-block {
    margin-bottom: 28px;
}
.skill-category-header {
    margin-bottom: 12px;
}
.skill-category-name {
    font-size: 16px;
    font-weight: 600;
    color: #2c5f8a;
    margin-bottom: 4px;
}
.skill-category-desc {
    font-size: 17px;
    line-height: 1.75;
    color: #333;
    margin: 0 0 4px;
}
.skill-items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 14px;
}
.skill-item-card {
    background: #f8fafc;
    border: 1px solid #e2eaf2;
    border-radius: 6px;
    padding: 14px 16px;
    font-size: 15px;
}
.skill-item-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
    gap: 8px;
}
.skill-name {
    font-size: 16px;
    font-weight: 600;
    color: #1a2b3c;
    flex: 1;
}
.skill-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}
.skill-badge--beginner {
    background: #e8f5e9;
    color: #2e7d32;
}
.skill-badge--intermediate {
    background: #e3f2fd;
    color: #1565c0;
}
.skill-badge--advanced {
    background: #fff3e0;
    color: #e65100;
}
.skill-badge--expert {
    background: #fce4ec;
    color: #880e4f;
}
.skill-item-desc {
    font-size: 16px;
    color: #555;
    margin: 0;
    line-height: 1.6;
}
.tools-category-heading {
    font-size: 16px;
    font-weight: 600;
    color: #2c5f8a;
    margin: 20px 0 10px;
}

/* =============================================
   AI TOOLS SPOKE PAGE
   ============================================= */
.ai-spoke-section {
    margin-bottom: 40px;
}
.ai-spoke-heading {
    font-size: 20px;
    font-weight: 700;
    color: #1a2b3c;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e8f4f8;
}
.ai-spoke-heading .fa {
    color: #2c7be5;
    margin-right: 8px;
}
.ai-spoke-section p {
    font-size: 18px;
    line-height: 1.8;
    color: #444;
    margin-bottom: 14px;
}
.ai-tools-category {
    font-size: 15px;
    font-weight: 600;
    color: #2c5f8a;
    margin: 22px 0 10px;
}
.ai-tips-list {
    padding-left: 20px;
    margin: 0;
}
.ai-tips-list li {
    font-size: 15px;
    line-height: 1.75;
    color: #333;
    margin-bottom: 10px;
    padding-left: 6px;
}

/* ═══════════════════════════════════════════════════════
   BOOKS — SIDEBAR CTA (all hub & spoke pages)
═══════════════════════════════════════════════════════ */
.books-cta-card {
    background: linear-gradient(135deg, #1a2a4a 0%, #2c4a7c 100%);
    border-radius: 8px;
    padding: 18px 16px;
    margin-top: 12px;
    text-align: center;
}
.books-cta-card .books-cta-icon {
    font-size: 28px;
    color: #f0c040;
    margin-bottom: 8px;
}
.books-cta-card .sidebar-title {
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    margin: 0 0 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.books-cta-card p {
    color: #c8d8f0;
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 12px;
}
.btn-books-cta {
    background: #f0c040;
    color: #1a2a4a;
    border: none;
    font-weight: 700;
    font-size: 13px;
    padding: 8px 16px;
    border-radius: 5px;
    transition: background 0.2s;
}
.btn-books-cta:hover,
.btn-books-cta:focus {
    background: #ffd44d;
    color: #1a2a4a;
    text-decoration: none;
}

/* ═══════════════════════════════════════════════════════
   SIDEBAR — SERIES PANEL
═══════════════════════════════════════════════════════ */
.sidebar-series-panel {
    background: linear-gradient(135deg, #1a2a4a 0%, #2c4a7c 100%);
    border-radius: 8px;
    padding: 16px 14px 18px;
    margin-top: 12px;
    text-align: center;
}
.sidebar-series-label {
    color: #f0c040;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    margin: 0 0 6px;
}
.sidebar-series-fan-wrap {
    position: relative;
    height: 82px;
    width: 192px;
    margin: 0 auto 10px;
}
.sidebar-fan-cover {
    position: absolute;
    width: 44px;
    height: 66px;
    object-fit: cover;
    border-radius: 3px;
    box-shadow: 2px 3px 8px rgba(0,0,0,0.4);
}
.sidebar-fan-pos-0 { left: 4px;   top: 14px; transform: rotate(-16deg); z-index: 1; }
.sidebar-fan-pos-1 { left: 38px;  top: 7px;  transform: rotate(-8deg);  z-index: 2; }
.sidebar-fan-pos-2 { left: 74px;  top: 4px;  transform: rotate(0deg);   z-index: 5; }
.sidebar-fan-pos-3 { left: 110px; top: 7px;  transform: rotate(8deg);   z-index: 2; }
.sidebar-fan-pos-4 { left: 144px; top: 14px; transform: rotate(16deg);  z-index: 1; }
.sidebar-series-title {
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    line-height: 1.3;
    margin: 0 0 6px;
}
.sidebar-series-desc {
    color: #c8d8f0;
    font-size: 12px;
    line-height: 1.45;
    margin-bottom: 12px;
}

/* ═══════════════════════════════════════════════════════
   BOOKS — INDEX PAGE (/books)
═══════════════════════════════════════════════════════ */
.books-index-hero {
    background: linear-gradient(135deg, #1a2a4a 0%, #2c4a7c 100%);
    padding: 56px 0 48px;
    text-align: center;
    margin-bottom: 48px;
}
.books-index-hero-title {
    font-size: 38px;
    font-weight: 800;
    color: #fff;
    margin: 0 0 14px;
}
.books-index-hero-subtitle {
    font-size: 18px;
    color: #c8d8f0;
    margin: 0;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.books-index-body {
    padding-bottom: 60px;
}
.series-row {
    display: flex;
    align-items: center;
    gap: 32px;
    background: #fff;
    border: 1px solid #e0e8f0;
    border-radius: 10px;
    padding: 28px;
    margin-bottom: 28px;
    box-shadow: 0 2px 10px rgba(44,74,124,0.07);
}
.series-row-covers {
    display: flex;
    align-items: flex-end;
    gap: -10px;
    min-width: 180px;
    position: relative;
    height: 130px;
}
.series-thumb-wrap {
    position: absolute;
    width: 72px;
    height: 108px;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.18);
    transition: transform 0.2s;
}
.series-thumb-0 { left: 0;   transform: rotate(-8deg); z-index: 1; }
.series-thumb-1 { left: 28px; transform: rotate(-4deg); z-index: 2; }
.series-thumb-2 { left: 56px; transform: rotate(0deg);  z-index: 3; }
.series-thumb-3 { left: 84px; transform: rotate(4deg);  z-index: 2; }
.series-thumb-4 { left: 112px;transform: rotate(8deg);  z-index: 1; }
.series-thumb-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.series-thumb-placeholder {
    width: 100%;
    height: 100%;
    background: #c8d8f0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #2c4a7c;
}
.series-row-info {
    flex: 1;
}
.series-row-title {
    font-size: 24px;
    font-weight: 700;
    color: #1a2a4a;
    margin: 0 0 6px;
}
.series-row-title a { color: inherit; text-decoration: none; }
.series-row-title a:hover { color: #2c4a7c; }
.series-row-subtitle {
    font-size: 16px;
    color: #555;
    margin: 0 0 8px;
}
.series-row-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 12px;
}
.series-row-meta {
    margin-bottom: 14px;
}
.series-book-count {
    font-size: 13px;
    color: #888;
}
.series-book-count .fa { margin-right: 5px; }
.series-row-btn {
    background: #2c4a7c;
    color: #fff;
    border: none;
    padding: 9px 22px;
    border-radius: 5px;
    font-weight: 600;
    font-size: 14px;
    transition: background 0.2s;
}
.series-row-btn:hover {
    background: #1a2a4a;
    color: #fff;
    text-decoration: none;
}
.books-empty {
    text-align: center;
    padding: 60px 0;
    color: #888;
}
.books-empty-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 16px;
    color: #ccc;
}

/* ═══════════════════════════════════════════════════════
   BOOKS — SERIES PAGE
═══════════════════════════════════════════════════════ */
.series-hero {
    background: linear-gradient(135deg, #1a2a4a 0%, #2c4a7c 100%);
    padding: 56px 0 64px;
    overflow: hidden;
}
.series-hero-inner {
    display: flex;
    align-items: center;
    gap: 48px;
}
.series-hero-text {
    flex: 1;
    min-width: 0;
}
.series-breadcrumb {
    font-size: 13px;
    color: #666;
    margin-bottom: 16px;
    margin-top: 24px;
}
.series-breadcrumb a { color: #337ab7; text-decoration: none; }
.series-breadcrumb a:hover { text-decoration: underline; }
.series-breadcrumb-sep { margin: 0 4px; color: #999; }
.series-description {
    font-size: 16px;
    color: #444;
    line-height: 1.8;
    margin-bottom: 28px;
    max-width: 820px;
}
.series-hero-title {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    margin: 0 0 12px;
    line-height: 1.2;
}
.series-hero-subtitle {
    font-size: 18px;
    color: #c8d8f0;
    margin: 0 0 14px;
}
.series-hero-desc {
    font-size: 15px;
    color: #a8c0e0;
    line-height: 1.7;
    margin: 0;
}
.series-hero-covers {
    position: relative;
    width: 340px;
    height: 240px;
    flex-shrink: 0;
    padding-right: 30px;
}
.fan-cover {
    position: absolute;
    width: 110px;
    height: 165px;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(0,0,0,0.35);
    transition: transform 0.2s;
}
.fan-cover-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.fan-cover-placeholder {
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: rgba(255,255,255,0.5);
}
.fan-pos-0 { left: 0;   top: 20px; transform: rotate(-16deg); z-index: 1; }
.fan-pos-1 { left: 40px; top: 10px; transform: rotate(-8deg);  z-index: 2; }
.fan-pos-2 { left: 85px; top: 5px;  transform: rotate(0deg);   z-index: 5; }
.fan-pos-3 { left: 130px;top: 10px; transform: rotate(8deg);   z-index: 2; }
.fan-pos-4 { left: 170px;top: 20px; transform: rotate(16deg);  z-index: 1; }
.series-body {
    padding-top: 48px;
    padding-bottom: 60px;
}
.series-books-heading {
    font-size: 26px;
    font-weight: 700;
    color: #1a2a4a;
    margin: 0 0 28px;
}
.series-books-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 48px;
}
.series-book-card {
    width: calc(20% - 20px);
    min-width: 160px;
}
.series-book-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: transform 0.18s;
}
.series-book-card-link:hover { transform: translateY(-4px); text-decoration: none; }
.series-book-cover-wrap {
    position: relative;
    padding-bottom: 150%;
    overflow: hidden;
    border-radius: 6px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.18);
    margin-bottom: 12px;
}
.series-book-cover {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    object-fit: cover;
}
.series-book-cover-placeholder {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: #c8d8f0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: #2c4a7c;
}
.series-book-title {
    font-size: 14px;
    font-weight: 700;
    color: #1a2a4a;
    margin: 0 0 4px;
    line-height: 1.3;
}
.series-book-subtitle {
    font-size: 12px;
    color: #666;
    margin: 0 0 6px;
    line-height: 1.4;
}
.series-book-price {
    font-size: 14px;
    font-weight: 700;
    color: #2c4a7c;
    margin: 0 0 6px;
}
.series-book-cta {
    font-size: 12px;
    color: #2c4a7c;
    font-weight: 600;
}
.series-content-section {
    margin-bottom: 36px;
}
.series-content-section p {
    font-size: 16px;
    line-height: 1.75;
    color: #333;
    margin-bottom: 14px;
}
.series-section-divider {
    border: none;
    border-top: 1px solid #e2e8f0;
    margin: 40px 0;
}
.series-content-section.section-has-image + .series-content-section:not(.section-has-image) {
    border-top: 1px solid #e2e8f0;
    padding-top: 32px;
}
.series-section-heading {
    font-size: 22px;
    font-weight: 700;
    color: #1a2a4a;
    margin: 0 0 14px;
}
.series-content-section.section-has-image {
    display: flex;
    gap: 32px;
    align-items: flex-start;
    border-top: 1px solid #e2e8f0;
    padding-top: 32px;
}
.section-image-col {
    flex: 0 0 200px;
}
.section-image-col .section-img {
    width: 100%;
    border-radius: 6px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.18);
    display: block;
}
.section-text-col {
    flex: 1;
    min-width: 0;
}
.section-buy-btn {
    margin-top: 16px;
    display: inline-block;
    font-weight: 600;
    letter-spacing: 0.02em;
}
@media (max-width: 767px) {
    .series-content-section.section-has-image {
        flex-direction: column;
    }
    .section-image-col {
        flex: none;
        width: 100%;
        max-width: 200px;
        margin: 0 auto 16px;
    }
}
.series-buy-all {
    margin-bottom: 36px;
}
.series-buy-all-heading {
    font-size: 22px;
    font-weight: 700;
    color: #1a2a4a;
    margin: 0 0 20px;
}
.series-buy-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.series-buy-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid #e2e8f0;
    gap: 12px;
}
.series-buy-item:last-child {
    border-bottom: none;
}
.series-buy-label {
    font-weight: 600;
    color: #1a2a4a;
    font-size: 15px;
}
.series-buy-btns {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}
.btn-series-amazon {
    background: #ff9900;
    color: #111;
    border: none;
    font-weight: 600;
}
.btn-series-amazon:hover,
.btn-series-amazon:focus {
    background: #e68a00;
    color: #111;
}
.btn-series-gumroad {
    background: #36a9ae;
    color: #fff;
    border: none;
    font-weight: 600;
}
.btn-series-gumroad:hover,
.btn-series-gumroad:focus {
    background: #2d9095;
    color: #fff;
}
@media (max-width: 540px) {
    .series-buy-item {
        flex-direction: column;
        align-items: flex-start;
    }
}
.series-back-link {
    margin-top: 40px;
}
.series-back-link a {
    color: #2c4a7c;
    font-size: 14px;
    font-weight: 600;
}
.series-back-link a .fa { margin-right: 6px; }

/* ═══════════════════════════════════════════════════════
   BOOKS — INDIVIDUAL BOOK PAGE
═══════════════════════════════════════════════════════ */
.book-hero {
    background: linear-gradient(135deg, #1a2a4a 0%, #2c4a7c 100%);
    padding: 48px 0 56px;
}
.book-hero-inner {
    display: flex;
    align-items: flex-start;
    gap: 48px;
}
.book-hero-cover {
    flex-shrink: 0;
    width: 200px;
}
.book-cover-img {
    width: 100%;
    border-radius: 6px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}
.book-cover-placeholder {
    width: 200px;
    height: 300px;
    background: rgba(255,255,255,0.15);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 56px;
    color: rgba(255,255,255,0.4);
}
.book-hero-text {
    flex: 1;
    min-width: 0;
}
.book-breadcrumb {
    font-size: 13px;
    color: #666;
    margin: 20px 0 16px;
}
.book-breadcrumb a { color: #337ab7; text-decoration: none; }
.book-breadcrumb a:hover { text-decoration: underline; }
.book-breadcrumb-sep { margin: 0 4px; color: #999; }
.book-hero-title {
    font-size: 34px;
    font-weight: 800;
    color: #fff;
    margin: 0 0 10px;
    line-height: 1.2;
}
.book-hero-subtitle {
    font-size: 18px;
    color: #c8d8f0;
    margin: 0 0 16px;
}
.hero-bullets {
    list-style: none;
    padding: 0;
    margin: 0 0 22px;
}
.hero-bullets li {
    font-size: 15px;
    color: #c8d8f0;
    margin-bottom: 8px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    line-height: 1.4;
}
.hero-bullets li .fa {
    color: #4ec994;
    margin-top: 2px;
    flex-shrink: 0;
}
.book-hero-btns {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-top: 4px;
}
.book-price {
    font-size: 22px;
    font-weight: 800;
    color: #f0c040;
    margin-right: 4px;
}
.btn-amazon {
    background: #ff9900;
    color: #111;
    border: none;
    font-weight: 700;
    padding: 10px 22px;
    border-radius: 5px;
    font-size: 14px;
    transition: background 0.2s;
}
.btn-amazon:hover, .btn-amazon:focus {
    background: #ffaa22;
    color: #111;
    text-decoration: none;
}
.btn-amazon .fa { margin-right: 7px; }
.btn-gumroad {
    background: #36c5f0;
    color: #fff;
    border: none;
    font-weight: 700;
    padding: 10px 22px;
    border-radius: 5px;
    font-size: 14px;
    transition: background 0.2s;
}
.btn-gumroad:hover, .btn-gumroad:focus {
    background: #28b0d8;
    color: #fff;
    text-decoration: none;
}
.btn-gumroad .fa { margin-right: 7px; }
.book-trust-note {
    font-size: 12px;
    color: #a8c0e0;
    margin: 4px 0 0;
    width: 100%;
}
.book-body {
    padding-top: 48px;
    padding-bottom: 60px;
}
.book-section {
    margin-bottom: 36px;
}
.book-section-heading {
    font-size: 24px;
    font-weight: 700;
    color: #1a2a4a;
    margin: 0 0 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid #e0e8f0;
}
.book-subsection-heading {
    font-size: 18px;
    font-weight: 600;
    color: #2c4a7c;
    margin: 20px 0 10px;
}
.book-section p, .book-body p {
    font-size: 16px;
    line-height: 1.75;
    color: #333;
    margin-bottom: 14px;
}
.book-payment-section {
    background: linear-gradient(135deg, #f8fafc 0%, #eaf0f8 100%);
    border: 2px solid #c8d8f0;
    border-radius: 10px;
    padding: 32px;
    margin-top: 48px;
    margin-bottom: 36px;
}
.book-payment-inner {
    display: flex;
    align-items: center;
    gap: 28px;
}
.book-payment-cover {
    flex: 0 0 130px;
}
.book-payment-cover img {
    width: 100%;
    border-radius: 6px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.22);
    display: block;
}
.book-payment-content {
    flex: 1;
    min-width: 0;
}
.book-payment-content .book-payment-btns {
    justify-content: flex-start;
}
@media (max-width: 600px) {
    .book-payment-inner {
        flex-direction: column;
        align-items: flex-start;
    }
    .book-payment-cover {
        flex: none;
        width: 110px;
    }
    .book-payment-content .book-payment-btns {
        justify-content: center;
    }
}
.book-payment-title {
    font-size: 24px;
    font-weight: 700;
    color: #1a2a4a;
    margin: 0 0 12px;
}
.book-payment-price {
    font-size: 36px;
    font-weight: 800;
    color: #2c4a7c;
    margin: 0 0 20px;
}
.book-payment-btns {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 14px;
}
.book-sidebar-card {
    background: #fff;
    border: 1px solid #e0e8f0;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(44,74,124,0.07);
    position: sticky;
    top: 20px;
}
.book-sidebar-title {
    font-size: 15px;
    font-weight: 700;
    color: #1a2a4a;
    margin: 0 0 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e0e8f0;
}
.book-sibling-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid #f0f4f8;
}
.book-sibling-item:last-child { border-bottom: none; }
.book-sibling-current { background: #f0f8ff; border-radius: 4px; padding: 8px 6px; }
.book-sibling-cover {
    width: 60px;
    height: 90px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.18);
}
.book-sibling-cover-placeholder {
    width: 60px;
    height: 90px;
    background: #c8d8f0;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #2c4a7c;
    flex-shrink: 0;
}
.book-sibling-title {
    font-size: 13px;
    color: #333;
    font-weight: 600;
    line-height: 1.3;
}
.book-sibling-item a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: inherit;
    text-decoration: none;
    width: 100%;
}
.book-sibling-item a:hover .book-sibling-title { color: #2c4a7c; }
.book-back-link {
    margin-top: 32px;
}
.book-back-link a {
    color: #2c4a7c;
    font-size: 14px;
    font-weight: 600;
}
.book-back-link a .fa { margin-right: 6px; }

/* Mobile adjustments — books */
@media (max-width: 767px) {
    .series-hero-inner {
        flex-direction: column;
        gap: 32px;
    }
    .series-hero-covers {
        width: 100%;
        height: 140px;
        display: flex;
        justify-content: center;
    }
    .fan-pos-0 { left: 0; }
    .fan-pos-1 { left: 30px; }
    .fan-pos-2 { left: 62px; }
    .fan-pos-3 { left: 94px; }
    .fan-pos-4 { left: 126px; }
    .series-books-grid { gap: 16px; }
    .series-book-card { width: calc(50% - 8px); }
    .book-hero-inner {
        flex-direction: column;
        gap: 24px;
    }
    .book-hero-cover { width: 140px; margin: 0 auto; }
    .book-hero-title { font-size: 24px; }
    .book-hero-btns { flex-direction: column; align-items: flex-start; }
    .book-payment-btns { flex-direction: column; }
    .btn-amazon.btn-lg, .btn-gumroad.btn-lg { width: 100%; text-align: center; }
    .books-index-hero-title { font-size: 28px; }
    .series-row { flex-direction: column; gap: 20px; }
    .series-row-covers { min-width: auto; width: 180px; }
}

/* ── Recently Asked REAL Questions card ────────────────────────────────── */
.recent-questions-card {
    background: #fff;
    border: 1px solid #e0f7f4;
    border-left: 4px solid #2dd4bf;
    border-radius: 6px;
    margin-bottom: 28px;
    overflow: hidden;
}
.recent-questions-header {
    background: #f0fdfb;
    padding: 12px 18px;
    font-size: 20px;
    font-weight: 700;
    color: #1a2a4a;
}
.recent-questions-header .fa {
    color: #2dd4bf;
    margin-right: 8px;
}
.recent-questions-subtitle {
    font-size: 13px;
    color: #6b7280;
    margin: 0;
    padding: 0 18px 12px;
    background: #f0fdfb;
    border-bottom: 1px solid #e0f7f4;
}
.recent-questions-scroll {
    max-height: 260px;
    overflow-y: auto;
}
.recent-questions-scroll::-webkit-scrollbar { width: 5px; }
.recent-questions-scroll::-webkit-scrollbar-track { background: #f0fdfb; }
.recent-questions-scroll::-webkit-scrollbar-thumb { background: #2dd4bf; border-radius: 3px; }
.rq-item {
    padding: 11px 18px;
    border-bottom: 1px solid #f3f4f6;
}
.rq-item:last-child { border-bottom: none; }
.rq-question {
    font-size: 14px;
    color: #1a2a4a;
    margin-bottom: 5px;
    line-height: 1.45;
}
.rq-icon {
    color: #2dd4bf;
    margin-right: 7px;
    font-size: 13px;
    flex-shrink: 0;
}
.rq-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    align-items: center;
}
.rq-company {
    display: inline-block;
    background: #e0f7f4;
    color: #0f766e;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 12px;
}
.rq-source {
    font-size: 11px;
    color: #9ca3af;
}
.rq-source .fa { margin-right: 3px; }
.rq-disclaimer {
    font-size: 11px;
    color: #9ca3af;
    padding: 8px 18px;
    border-top: 1px solid #e0f7f4;
    background: #fafffe;
}
.rq-disclaimer .fa {
    margin-right: 4px;
    color: #2dd4bf;
}
.rq-ebook-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 18px;
    background: linear-gradient(135deg, #1a2a4a 0%, #2c4a7c 100%);
    gap: 12px;
    flex-wrap: wrap;
}
.rq-ebook-cta-text {
    font-size: 13px;
    color: #fff;
}
.rq-ebook-cta-text .fa {
    color: #2dd4bf;
    margin-right: 5px;
}
.rq-ebook-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: #2dd4bf;
    color: #1a1a2e;
    font-size: 13px;
    font-weight: 700;
    padding: 7px 16px;
    border-radius: 4px;
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
}
.rq-ebook-cta-btn:hover {
    background: #22b8a4;
    color: #1a1a2e;
    text-decoration: none;
}
.rq-ebook-cta-btn .fa {
    font-size: 11px;
}