/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Prevent horizontal scroll on mobile */
html, body {
    overflow-x: hidden;
}

/* Better touch targets for mobile */
a, button, input, textarea, select {
    -webkit-tap-highlight-color: rgba(231, 76, 60, 0.2);
}

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

/* Image Optimization */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

.hero-image img,
.section-image img,
.feature-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: 8px;
}

.profile-image img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 50%;
}

.blog-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    line-height: 1.2;
}

h2 {
    font-size: 2rem;
    line-height: 1.3;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: #666;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary {
    background-color: #e74c3c;
    color: white;
    border-color: #e74c3c;
}

.btn-primary:hover {
    background-color: #c0392b;
    border-color: #c0392b;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: #3498db;
    color: white;
    border-color: #3498db;
}

.btn-secondary:hover {
    background-color: #2980b9;
    border-color: #2980b9;
}

.btn-outline {
    background-color: transparent;
    color: #e74c3c;
    border-color: #e74c3c;
}

.btn-outline:hover {
    background-color: #e74c3c;
    color: white;
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

/* Header */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.sticky {
    background-color: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #e74c3c;
}

.logo img {
    width: 40px;
    height: 40px;
    margin-right: 10px;
    border-radius: 6px;
}

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

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

.nav-list li {
    margin: 0 1rem;
}

.nav-list a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-list a:hover {
    color: #e74c3c;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* Sticky CTA */
.sticky-cta {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 999;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

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

.hero-text h1 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

.hero-text p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #555;
}

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

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

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

.features h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

/* PC端优化布局 */
@media (min-width: 769px) {
    /* 默认3列布局 */
    .features-grid {
        grid-template-columns: repeat(3, 1fr) !important;
        max-width: 1200px;
        margin: 0 auto;
    }
    
    /* 为6个项目强制3列布局 */
    .features-6-items {
        grid-template-columns: repeat(3, 1fr) !important;
        display: grid !important;
    }
    
    /* 为4个项目创建4列布局 */
    .features-4-items {
        grid-template-columns: repeat(4, 1fr) !important;
        display: grid !important;
    }
    
    /* 为3个项目保持3列布局 */
    .features-3-items {
        grid-template-columns: repeat(3, 1fr) !important;
        display: grid !important;
    }
    
    /* 确保feature-item正确显示 */
    .features-grid .feature-item {
        display: block !important;
        text-align: center;
    }
}

.feature-item {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    background-color: #f8f9fa;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    margin-bottom: 1.5rem;
}

.feature-item h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* Why Choose Us */
.why-choose-us {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.section-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.text-content h2 {
    color: #2c3e50;
    margin-bottom: 2rem;
}

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.benefit-item h3 {
    color: #e74c3c;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.image-content img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Privacy & Safety */
.privacy-safety {
    padding: 80px 0;
    background-color: #fff;
}

.privacy-safety h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

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

.privacy-item {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    background-color: #f8f9fa;
}

.privacy-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.privacy-item h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* How It Works */
.how-it-works {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.how-it-works h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

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

.step-item {
    text-align: center;
    padding: 2rem;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.step-number {
    width: 60px;
    height: 60px;
    background-color: #e74c3c;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.step-item h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* Understanding Herpes */
.understanding-herpes {
    padding: 80px 0;
    background-color: #fff;
}

/* Who Uses */
.who-uses {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.who-uses h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.users-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.user-type {
    text-align: center;
    padding: 2rem;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.user-type img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.user-type h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* Featured Singles */
.featured-singles {
    padding: 80px 0;
    background-color: #fff;
}

.featured-singles h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.singles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.single-profile {
    text-align: center;
    padding: 1.5rem;
    background-color: #f8f9fa;
    border-radius: 12px;
    transition: transform 0.3s ease;
}

.single-profile:hover {
    transform: translateY(-5px);
}

.single-profile img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 1rem;
}

.single-profile h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.single-profile p {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.verified {
    color: #27ae60;
    font-weight: 600;
    font-size: 0.9rem;
}

.disclaimer {
    text-align: center;
    font-style: italic;
    color: #666;
}

/* Popular Cities */
.popular-cities {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.popular-cities h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.cities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.city-item {
    background-color: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.city-item:hover {
    transform: translateY(-5px);
}

.city-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.city-item h3 {
    padding: 1rem 1.5rem 0.5rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.city-item p {
    padding: 0 1.5rem 1.5rem;
    color: #666;
}

/* App Download */
.app-download {
    padding: 80px 0;
    background-color: #fff;
}

.app-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.app-text h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

.app-features ul {
    list-style: none;
    margin-bottom: 2rem;
}

.app-features li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.app-features li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
}

.download-steps {
    margin-bottom: 2rem;
}

.download-steps h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.download-steps ol {
    padding-left: 1.5rem;
}

.download-steps li {
    margin-bottom: 0.5rem;
}

.download-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.app-images {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.app-images > img {
    width: 80%;
    height: auto;
    border-radius: 12px;
    margin-bottom: 1rem;
}

.app-screenshots {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.app-screenshots img {
    width: 80px;
    height: auto;
    border-radius: 8px;
}

/* Pricing */
.pricing {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.pricing h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

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

.pricing-plan {
    background-color: #fff;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    position: relative;
    transition: transform 0.3s ease;
}

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

.pricing-plan.featured {
    border: 3px solid #e74c3c;
    transform: scale(1.05);
}

.pricing-plan h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    color: #e74c3c;
    margin-bottom: 1rem;
}

.price span {
    font-size: 1rem;
    color: #666;
}

.savings {
    background-color: #27ae60;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: inline-block;
}

.pricing-plan ul {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}

.pricing-plan li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
}

.payment-methods {
    text-align: center;
    color: #666;
    font-style: italic;
}

/* Verification */
.verification {
    padding: 80px 0;
    background-color: #fff;
}

.verification h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.verification-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.verification-item {
    text-align: center;
    padding: 2rem;
    background-color: #f8f9fa;
    border-radius: 12px;
}

.verification-item h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* FAQ */
.faq {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.faq h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.faq-item {
    background-color: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.faq-item h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

/* Success Stories */
.success-stories {
    padding: 80px 0;
    background-color: #fff;
}

.success-stories h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.stories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.story-item {
    text-align: center;
    padding: 2rem;
    background-color: #f8f9fa;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.story-item img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 1.5rem;
}

.story-item blockquote {
    font-style: italic;
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.story-item cite {
    color: #e74c3c;
    font-weight: 600;
}

/* Blog Articles */
.blog-articles {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.blog-articles h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.article-item {
    background-color: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.article-item:hover {
    transform: translateY(-5px);
}

.article-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.article-item h3 {
    padding: 1rem 1.5rem 0.5rem;
    margin-bottom: 0.5rem;
}

.article-item h3 a {
    color: #2c3e50;
    text-decoration: none;
    transition: color 0.3s ease;
}

.article-item h3 a:hover {
    color: #e74c3c;
}

.article-item p {
    padding: 0 1.5rem 1.5rem;
    color: #666;
}

/* Final CTA */
.final-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    text-align: center;
}

.final-cta h2 {
    color: white;
    margin-bottom: 1rem;
}

.final-cta p {
    color: rgba(255,255,255,0.9);
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.final-cta .btn {
    background-color: white;
    color: #e74c3c;
    border-color: white;
}

.final-cta .btn:hover {
    background-color: rgba(255,255,255,0.9);
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background-color: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: #e74c3c;
    margin-bottom: 1rem;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

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

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: white;
        box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        padding: 1rem 0;
    }
    
    .nav-list li {
        margin: 0.5rem 0;
        text-align: center;
    }
    
    .header-cta {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .section-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .app-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .download-buttons {
        justify-content: center;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .users-grid {
        grid-template-columns: 1fr;
    }
    
    .cities-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-plan.featured {
        transform: none;
    }
    
    .singles-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }
    
    .app-screenshots {
        flex-wrap: wrap;
    }
}

/* Privacy & Safety Page Styles */
.privacy-hero {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.privacy-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.privacy-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Privacy Features */
.privacy-features {
    padding: 80px 0;
    background: #f8f9fa;
}

.privacy-features h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-size: 2.5rem;
    font-weight: 700;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.feature-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.feature-card p {
    color: #6c757d;
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Security Measures */
.security-measures {
    padding: 80px 0;
    background: white;
}

.security-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.security-text h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 2.5rem;
    font-weight: 700;
}

.security-text p {
    color: #6c757d;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.security-list {
    list-style: none;
    padding: 0;
}

.security-list li {
    padding: 0.75rem 0;
    color: #495057;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid #e9ecef;
}

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

.security-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

/* Safety Features */
.safety-features {
    padding: 80px 0;
    background: #f8f9fa;
}

.safety-features h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-size: 2.5rem;
    font-weight: 700;
}

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

.safety-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.safety-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.safety-icon {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.safety-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.safety-card p {
    color: #6c757d;
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Offline Safety */
.offline-safety {
    padding: 80px 0;
    background: white;
}

.offline-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.offline-text h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 2.5rem;
    font-weight: 700;
}

.offline-text p {
    color: #6c757d;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.safety-tips {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.safety-tips li {
    padding: 0.5rem 0;
    color: #495057;
    font-size: 0.95rem;
    position: relative;
    padding-left: 1.5rem;
}

.safety-tips li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
}

.safety-resources {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #e74c3c;
}

.safety-resources h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.safety-resources p {
    color: #6c757d;
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.offline-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

/* Data Protection */
.data-protection {
    padding: 80px 0;
    background: #f8f9fa;
}

.data-protection h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-size: 2.5rem;
    font-weight: 700;
}

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

.protection-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.protection-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.protection-item h3 {
    color: #e74c3c;
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.protection-item ul {
    list-style: none;
    padding: 0;
}

.protection-item li {
    padding: 0.5rem 0;
    color: #6c757d;
    font-size: 0.9rem;
    position: relative;
    padding-left: 1.5rem;
    border-bottom: 1px solid #f1f3f4;
}

.protection-item li:last-child {
    border-bottom: none;
}

.protection-item li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #e74c3c;
    font-weight: bold;
}

/* Trust & Verification */
.trust-verification {
    padding: 80px 0;
    background: white;
}

.trust-verification h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-size: 2.5rem;
    font-weight: 700;
}

.trust-features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.trust-feature {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 12px;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.trust-feature:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.trust-icon {
    flex-shrink: 0;
}

.trust-text h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.trust-text p {
    color: #6c757d;
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Privacy CTA */
.privacy-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    text-align: center;
}

.privacy-cta .cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.privacy-cta .cta-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.privacy-cta .cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.privacy-cta .btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.privacy-cta .btn-secondary:hover {
    background: white;
    color: #e74c3c;
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .features,
    .why-choose-us,
    .privacy-safety,
    .how-it-works,
    .understanding-herpes,
    .who-uses,
    .featured-singles,
    .popular-cities,
    .app-download,
    .pricing,
    .verification,
    .faq,
    .success-stories,
    .blog-articles,
    .final-cta {
        padding: 60px 0;
    }
    
    h1 {
        font-size: 1.75rem;
        line-height: 1.3;
    }
    
    h2 {
        font-size: 1.5rem;
        line-height: 1.3;
    }
    
    h3 {
        font-size: 1.25rem;
        line-height: 1.4;
    }
    
    p {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 0.9rem;
        width: 100%;
        max-width: 280px;
        margin: 0 auto;
        display: block;
    }
    
    .hero-cta .btn {
        margin-bottom: 1rem;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .download-btn {
        width: 100%;
        max-width: 200px;
    }
    
    .singles-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .single-card {
        padding: 1rem;
    }
    
    .single-card img {
        width: 60px;
        height: 60px;
    }
    
    .app-screenshots {
        gap: 1rem;
    }
    
    .app-screenshot {
        width: 120px;
        height: auto;
    }
    
    .sticky-cta {
        padding: 10px 0;
    }
    
    .sticky-cta .btn {
        padding: 10px 16px;
        font-size: 0.85rem;
    }
    
    .nav-list li a {
        font-size: 1rem;
        padding: 0.75rem 1rem;
    }
    
    .mobile-menu-toggle {
        padding: 8px;
    }
    
    .feature-card,
    .step-card,
    .user-card,
    .city-card,
    .pricing-plan {
        padding: 1.5rem;
        margin-bottom: 1rem;
    }
    
    .pricing-plan h3 {
        font-size: 1.5rem;
    }
    
    .price {
        font-size: 2rem;
    }
    
    .faq-item {
        margin-bottom: 1rem;
    }
    
    .faq-question {
        font-size: 1rem;
        padding: 1rem;
    }
    
    .faq-answer {
        padding: 1rem;
    }
    
    .success-story {
        padding: 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .story-content {
        font-size: 0.95rem;
    }
    
    .story-author {
        font-size: 0.9rem;
    }
    
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-section h4 {
        font-size: 1.1rem;
    }
    
    .footer-section ul li a {
        font-size: 0.9rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    /* Table responsive */
    table {
        font-size: 0.85rem;
    }
    
    th, td {
        padding: 8px 4px;
    }
    
    /* Image responsive */
    img {
        max-width: 100%;
        height: auto;
    }
    
    /* Form responsive */
    input, textarea, select {
        font-size: 16px; /* Prevent zoom on iOS */
    }
    
    .newsletter-form {
        max-width: 100%;
    }
    
    .newsletter-form input {
        margin-bottom: 1rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .btn-large {
        padding: 14px 28px;
        font-size: 16px;
    }
    
    .singles-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .single-profile {
        padding: 1rem;
    }
    
    .single-profile img {
        width: 80px;
        height: 80px;
    }
}

/* Success Stories Page Styles */
.success-hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    text-align: center;
}

.success-hero h1 {
    color: white;
    margin-bottom: 1rem;
    font-size: 2.5rem;
}

.success-hero p {
    color: rgba(255,255,255,0.9);
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
}

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

.featured-stories h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.story-card {
    background-color: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.story-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.story-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.story-card:hover .story-image img {
    transform: scale(1.05);
}

.story-content {
    padding: 2rem;
}

.story-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.story-names {
    font-weight: 600;
    color: #e74c3c;
}

.story-content h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    line-height: 1.4;
}

.story-content p {
    color: #555;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.story-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background-color: #e74c3c;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.more-stories {
    padding: 80px 0;
    background-color: #fff;
}

.more-stories h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.stories-list {
    display: grid;
    gap: 2rem;
}

.story-item {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background-color: #f8f9fa;
    border-radius: 12px;
    align-items: flex-start;
}

.story-avatar {
    flex-shrink: 0;
}

.story-avatar img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
}

.story-text h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.story-text p {
    color: #555;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.story-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stars {
    color: #f39c12;
    font-size: 1.1rem;
}

.rating-text {
    color: #666;
    font-size: 0.9rem;
}

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

.success-stats h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 2rem;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: #e74c3c;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #2c3e50;
    font-weight: 600;
}

.community-support {
    padding: 80px 0;
    background-color: #fff;
}

.community-support h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.support-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

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

.support-features li {
    padding: 0.5rem 0;
    color: #555;
    position: relative;
    padding-left: 2rem;
}

.support-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #e74c3c;
    font-weight: bold;
}

.support-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 12px;
}

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

.share-story h2 {
    text-align: center;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.share-story > .container > p {
    text-align: center;
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.benefit {
    text-align: center;
    padding: 2rem;
    background-color: #fff;
    border-radius: 12px;
}

.benefit h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.benefit p {
    color: #666;
}

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

.success-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    text-align: center;
}

.success-cta h2 {
    color: white;
    margin-bottom: 1rem;
}

.success-cta p {
    color: rgba(255,255,255,0.9);
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    min-width: 180px;
}

/* Responsive adjustments for success stories */
@media (max-width: 768px) {
    .success-hero {
        padding: 100px 0 60px;
    }
    
    .success-hero h1 {
        font-size: 2rem;
    }
    
    .featured-stories,
    .more-stories,
    .success-stats,
    .community-support,
    .share-story,
    .success-cta {
        padding: 60px 0;
    }
    
    .story-item {
        flex-direction: column;
        text-align: center;
    }
    
    .support-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .story-meta {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .story-content {
        padding: 1.5rem;
    }
    
    .story-item {
        padding: 1.5rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

/* Blog Page Styles */
.blog-hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    text-align: center;
}

.blog-hero h1 {
    color: white;
    margin-bottom: 1rem;
    font-size: 3rem;
}

.blog-hero p {
    color: rgba(255,255,255,0.9);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

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

.featured-article h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.featured-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.featured-image {
    border-radius: 12px;
    overflow: hidden;
}

.featured-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.featured-text h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.featured-text .meta {
    color: #666;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.featured-text p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.blog-categories {
    padding: 80px 0;
}

.blog-categories h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.category-card {
    background-color: #fff;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #eee;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.category-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.category-card h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.category-card p {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.article-count {
    color: #e74c3c;
    font-weight: 600;
    font-size: 0.9rem;
}

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

.latest-articles h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

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

.article-card {
    background-color: #fff;
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #eee;
    position: relative;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.article-card.featured {
    border: 2px solid #e74c3c;
    box-shadow: 0 8px 25px rgba(231, 76, 60, 0.15);
}

.article-card.featured::before {
    content: "Featured";
    position: absolute;
    top: 15px;
    right: 15px;
    background: #e74c3c;
    color: white;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 2;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.article-card.featured:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(231, 76, 60, 0.25);
}

.article-image {
    height: 200px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.article-card:hover .article-image img {
    transform: scale(1.05);
}

.article-content {
    padding: 1.5rem;
}

.article-meta {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.article-content h3 {
    color: #000000;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    line-height: 1.4;
}

.article-content h3 a {
    color: #000000;
    text-decoration: none;
    transition: color 0.3s ease;
}

.article-content h3 a:hover {
    color: #333333;
}

.article-content p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.read-more {
    color: #e74c3c;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.read-more:hover {
    color: #c0392b;
}

.expert-contributors {
    padding: 80px 0;
}

.expert-contributors h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

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

.expert-card {
    background-color: #fff;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #eee;
}

.expert-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.expert-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 1rem;
    overflow: hidden;
}

.expert-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.expert-card h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.expert-title {
    color: #e74c3c;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.expert-card p {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
}

.newsletter-signup {
    padding: 80px 0;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    text-align: center;
}

.newsletter-signup h2 {
    color: white;
    margin-bottom: 1rem;
}

.newsletter-signup p {
    color: rgba(255,255,255,0.9);
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.newsletter-form {
    display: flex;
    max-width: 400px;
    margin: 0 auto;
    gap: 1rem;
}

.newsletter-form input {
    flex: 1;
    padding: 12px 16px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
}

.newsletter-form button {
    padding: 12px 24px;
    background-color: #e74c3c;
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.newsletter-form button:hover {
    background-color: #c0392b;
}

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

.popular-topics h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.topic-tag {
    background-color: #fff;
    padding: 1rem 1.5rem;
    border-radius: 25px;
    text-align: center;
    border: 2px solid #eee;
    transition: all 0.3s ease;
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
}

.topic-tag:hover {
    border-color: #e74c3c;
    color: #e74c3c;
    transform: translateY(-2px);
}

/* Blog Responsive Design */
@media (max-width: 768px) {
    .blog-hero {
        padding: 100px 0 60px;
    }
    
    .blog-hero h1 {
        font-size: 2rem;
    }
    
    .featured-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .categories-grid,
    .articles-grid,
    .experts-grid {
        grid-template-columns: 1fr;
    }
    
    .newsletter-form {
        flex-direction: column;
        max-width: 300px;
    }
    
    .topics-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .featured-article,
    .blog-categories,
    .latest-articles,
    .expert-contributors,
    .newsletter-signup,
    .popular-topics {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .article-card,
    .category-card,
    .expert-card {
        margin: 0 0.5rem;
    }
    
    .featured-text h3 {
        font-size: 1.5rem;
    }
    
    .expert-avatar {
        width: 60px;
        height: 60px;
    }
    
    .blog-hero h1 {
        font-size: 1.75rem;
        line-height: 1.3;
    }
    
    .blog-hero p {
        font-size: 0.95rem;
    }
    
    .article-content {
        padding: 1rem;
    }
    
    .article-content h3 {
        font-size: 1.1rem;
        line-height: 1.4;
    }
    
    .article-content p {
        font-size: 0.9rem;
        line-height: 1.6;
    }
    
    .article-meta {
        font-size: 0.8rem;
        flex-wrap: wrap;
    }
    
    .article-meta span {
        margin-right: 0.5rem;
        margin-bottom: 0.25rem;
    }
    
    .read-more {
        font-size: 0.85rem;
        padding: 8px 16px;
        display: inline-block;
        margin-top: 0.5rem;
    }
    
    .article-image {
        height: 150px;
    }
    
    .category-card {
        padding: 1rem;
    }
    
    .category-card h3 {
        font-size: 1.1rem;
    }
    
    .category-card p {
        font-size: 0.85rem;
    }
    
    .expert-card {
        padding: 1.5rem 1rem;
    }
    
    .expert-card h4 {
        font-size: 1rem;
    }
    
    .expert-title {
        font-size: 0.8rem;
    }
    
    .expert-card p {
        font-size: 0.8rem;
    }
    
    .newsletter-signup h2 {
        font-size: 1.5rem;
    }
    
    .newsletter-signup p {
        font-size: 0.9rem;
    }
    
    .topics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .topic-tag {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
}

/* App Page Styles */
.app-hero {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    animation: gradientShift 8s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% {
        background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    }
    50% {
        background: linear-gradient(135deg, #c0392b 0%, #e74c3c 100%);
    }
}

.app-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="hearts" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23hearts)"/></svg>');
    opacity: 0.3;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.app-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
    position: relative;
    z-index: 2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.app-hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    position: relative;
    z-index: 2;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.app-hero .container {
    position: relative;
    z-index: 2;
}

.app-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin: 2rem 0;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.download-btn svg {
    margin-right: 8px;
}

.app-screenshots {
    position: relative;
    max-width: 600px;
    margin: 3rem auto 0;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.screenshot {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: none;
}

.screenshot.active {
    display: block;
}

.screenshot-nav {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-dot.active {
    background: white;
    transform: scale(1.2);
}

/* Comprehensive Features Section */
.comprehensive-features {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.comprehensive-features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #7f8c8d;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.comprehensive-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.comprehensive-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.comprehensive-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.comprehensive-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.comprehensive-icon svg {
    stroke: white;
}

.comprehensive-item h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
}

.comprehensive-item p {
    color: #6c757d;
    line-height: 1.6;
    margin-bottom: 0;
}

/* App Comparison Section */
.app-comparison {
    padding: 80px 0;
    background-color: white;
}

.app-comparison h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.comparison-table {
    margin-top: 3rem;
    overflow-x: auto;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 12px;
    overflow: hidden;
}

.comparison-table th {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    padding: 1.5rem;
    text-align: left;
    font-weight: 600;
    font-size: 1.1rem;
}

.comparison-table td {
    padding: 1.2rem 1.5rem;
    border-bottom: 1px solid #e9ecef;
    vertical-align: middle;
}

.comparison-table tr:nth-child(even) {
    background-color: #f8f9fa;
}

.comparison-table tr:hover {
    background-color: #e3f2fd;
}

.comparison-table .check {
    color: #27ae60;
    font-weight: 600;
}

.comparison-table .cross {
    color: #e74c3c;
    font-weight: 600;
}

.comparison-table td:first-child {
    font-weight: 600;
    color: #2c3e50;
}

/* App Stats Enhancement */
.app-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.stat-item {
    text-align: center;
    padding: 1rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 500;
}

/* App Download Section Enhancement */
.app-download-section {
    text-align: center;
    margin-top: 40px;
}

.download-subtitle {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
    font-weight: 400;
    line-height: 1.5;
}

.app-download-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.app-store-btn,
.google-play-btn {
    display: inline-block;
    background: linear-gradient(135deg, #000 0%, #333 100%);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    padding: 12px 24px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    min-width: 160px;
}

.app-store-btn:hover,
.google-play-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    background: linear-gradient(135deg, #333 0%, #555 100%);
    color: white;
}

.download-btn-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.download-text {
    font-size: 12px;
    opacity: 0.8;
    line-height: 1;
}

.store-name {
    font-size: 16px;
    font-weight: 600;
    line-height: 1;
    margin-top: 2px;
}

.download-features {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.download-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #666;
}

.feature-icon {
    font-size: 18px;
}

/* Advanced Privacy Controls */
.advanced-privacy {
    padding: 80px 0;
    background: #f8f9fa;
}

.advanced-privacy h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-size: 2.5rem;
    font-weight: 700;
}

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

.privacy-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.privacy-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.privacy-icon {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.privacy-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.privacy-card p {
    color: #6c757d;
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Bank-Level Security */
.bank-security {
    padding: 80px 0;
    background: white;
}

.security-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.security-text h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 2.5rem;
    font-weight: 700;
}

.security-text p {
    color: #6c757d;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.security-list {
    list-style: none;
    padding: 0;
}

.security-list li {
    padding: 0.75rem 0;
    color: #495057;
    font-size: 1rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #e9ecef;
}

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

.security-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

/* Location Privacy */
.location-privacy {
    padding: 80px 0;
    background: #f8f9fa;
}

.location-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.location-text h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 2.5rem;
    font-weight: 700;
}

.location-text p {
    color: #6c757d;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.location-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.location-feature {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.feature-icon {
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

.location-feature h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.location-feature p {
    color: #6c757d;
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.5;
}

.location-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

/* 24/7 Support */
.support-section {
    padding: 80px 0;
    background: white;
}

.support-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.support-text h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 2.5rem;
    font-weight: 700;
}

.support-text p {
    color: #6c757d;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.support-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.support-feature {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.support-icon {
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

.support-feature h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.support-feature p {
    color: #6c757d;
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.5;
}

.support-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

/* Data Retention Policy */
.data-retention {
    padding: 80px 0;
    background: #f8f9fa;
}

.data-retention h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-size: 2.5rem;
    font-weight: 700;
}

.retention-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.retention-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.retention-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.retention-item h4 {
    color: #e74c3c;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.retention-item p {
    color: #6c757d;
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Building Trust */
.building-trust {
    padding: 80px 0;
    background: white;
}

.building-trust h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-size: 2.5rem;
    font-weight: 700;
}

.trust-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

/* PC端优化 - 确保3个项目在同一排 */
@media (min-width: 769px) {
    .trust-features {
        grid-template-columns: repeat(3, 1fr) !important;
        max-width: 1200px;
        margin: 2rem auto 0;
    }
}

/* 移动端响应式 */
@media (max-width: 768px) {
    .trust-features {
        grid-template-columns: 1fr;
    }
}

.trust-feature {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.trust-feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.trust-icon {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.trust-feature h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.trust-feature p {
    color: #6c757d;
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Ready to Date CTA */
.ready-to-date {
    padding: 80px 0;
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-large {
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: 600;
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #e74c3c;
}

/* Blog Article Page Styles */
.article-page {
    padding: 120px 0 80px;
    background-color: #fff;
}

.article-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

.article-title {
    color: #2c3e50;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.article-meta {
    color: #666;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.article-meta span {
    margin-right: 1rem;
}

.article-description {
    color: #666;
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

.article-content {
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.8;
    font-size: 1.1rem;
}

.article-content h2 {
    color: #2c3e50;
    font-size: 1.8rem;
    margin: 2.5rem 0 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e74c3c;
}

.article-content h3 {
    color: #2c3e50;
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
}

.article-content h4 {
    color: #2c3e50;
    font-size: 1.3rem;
    margin: 1.5rem 0 1rem;
}

.article-content p {
    color: #444;
    margin-bottom: 1.5rem;
    text-align: justify;
}

.article-content ul,
.article-content ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

.article-content li {
    color: #444;
    margin-bottom: 0.8rem;
    line-height: 1.6;
}

.article-content strong {
    color: #2c3e50;
    font-weight: 600;
}

.article-content em {
    color: #e74c3c;
    font-style: italic;
}

/* Article Tables */
.article-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-radius: 8px;
    overflow: hidden;
}

.article-table th {
    background-color: #e74c3c;
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}

.article-table td {
    padding: 1rem;
    border-bottom: 1px solid #eee;
    color: #444;
}

.article-table tr:hover {
    background-color: #f8f9fa;
}

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

/* Article Images */
.article-image {
    margin: 2rem 0;
    text-align: center;
}

.article-image img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.article-image.full-width img {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
}

.article-image.half-width {
    display: inline-block;
    width: 48%;
    margin: 1rem 1%;
}

.image-caption {
    color: #666;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    font-style: italic;
}

/* Highlight Boxes */
.highlight-box {
    background-color: #f8f9fa;
    border-left: 4px solid #e74c3c;
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0 8px 8px 0;
}

.highlight-box.tip {
    background-color: #e8f5e8;
    border-left-color: #28a745;
}

.highlight-box.warning {
    background-color: #fff3cd;
    border-left-color: #ffc107;
}

.highlight-box.info {
    background-color: #d1ecf1;
    border-left-color: #17a2b8;
}

.highlight-box h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.highlight-box p {
    margin-bottom: 0;
    color: #444;
}

/* Article Navigation */
.article-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 3rem 0;
    padding: 2rem;
    background-color: #f8f9fa;
    border-radius: 8px;
}

.article-nav a {
    color: #e74c3c;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.article-nav a:hover {
    color: #c0392b;
}

.nav-prev::before {
    content: "← ";
}

.nav-next::after {
    content: " →";
}

/* Article Share */
.article-share {
    text-align: center;
    margin: 3rem 0;
    padding: 2rem;
    background-color: #f8f9fa;
    border-radius: 8px;
}

.article-share h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.share-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.share-btn {
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    color: white;
    font-weight: 600;
    transition: transform 0.3s ease;
}

.share-btn:hover {
    transform: translateY(-2px);
}

.share-btn.facebook {
    background-color: #3b5998;
}

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

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

.share-btn.email {
    background-color: #666;
}

/* Related Articles */
.related-articles {
    margin: 4rem 0;
    padding: 3rem;
    background-color: #f8f9fa;
    border-radius: 12px;
}

.related-articles h3 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 2rem;
}

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

.related-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #eee;
}

.related-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.related-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.related-card-content {
    padding: 1.5rem;
}

.related-card h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.related-card p {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.related-card a {
    color: #e74c3c;
    text-decoration: none;
    font-weight: 600;
}

.related-card a:hover {
    color: #c0392b;
}

/* Article Responsive Design */
@media (max-width: 768px) {
    .article-page {
        padding: 100px 0 60px;
    }
    
    .article-title {
        font-size: 2rem;
    }
    
    .article-content {
        padding: 0 1rem;
    }
    
    .article-content h2 {
        font-size: 1.5rem;
    }
    
    .article-content h3 {
        font-size: 1.3rem;
    }
    
    .article-table {
        font-size: 0.9rem;
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
    
    .article-table th,
    .article-table td {
        padding: 0.8rem 0.5rem;
    }
    
    .article-image.half-width {
        width: 100%;
        margin: 1rem 0;
    }
    
    .article-nav {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .share-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .article-content ul,
    .article-content ol {
        padding-left: 1.5rem;
    }
}

@media (max-width: 480px) {
    .article-title {
        font-size: 1.75rem;
        line-height: 1.3;
        padding: 0 1rem;
    }
    
    .article-meta {
        font-size: 0.9rem;
        flex-wrap: wrap;
        padding: 0 1rem;
    }
    
    .article-content {
        font-size: 1rem;
        padding: 0 1rem;
    }
    
    .article-content h2 {
        font-size: 1.5rem;
        line-height: 1.3;
    }
    
    .article-content h3 {
        font-size: 1.3rem;
        line-height: 1.3;
    }
    
    .article-content h4 {
        font-size: 1.1rem;
        line-height: 1.3;
    }
    
    .article-content p {
        font-size: 0.95rem;
        text-align: left;
        line-height: 1.6;
    }
    
    /* Comprehensive Features Mobile */
    .comprehensive-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .comprehensive-item {
        padding: 1.5rem;
    }
    
    .comprehensive-features h2 {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
        padding: 0 1rem;
    }
    
    /* App Download Section Mobile */
    .app-download-section {
        margin-top: 30px;
        padding: 0 1rem;
    }
    
    .download-subtitle {
        font-size: 16px;
        margin-bottom: 20px;
    }
    
    .app-download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
        margin-bottom: 30px;
    }
    
    .app-store-btn,
    .google-play-btn {
        width: 100%;
        max-width: 280px;
        padding: 15px 20px;
    }
    
    .download-btn-content {
        justify-content: center;
    }
    
    .download-features {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }
    
    .download-feature {
        font-size: 13px;
    }
    
    /* App Comparison Mobile */
    .app-comparison h2 {
        font-size: 2rem;
    }
    
    .comparison-table {
        margin: 2rem -20px 0;
        border-radius: 0;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 1rem 0.8rem;
        font-size: 0.9rem;
    }
    
    .comparison-table th {
        font-size: 1rem;
    }
    
    /* App Stats Mobile */
    .app-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        padding: 1.5rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-label {
        font-size: 0.9rem;
    }
    
    /* App Download Buttons Mobile */
    .app-download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .app-store-btn img,
    .google-play-btn img {
        height: 45px;
    }
}    
    .article-content ul,
    .article-content ol {
        padding-left: 1.2rem;
        margin: 1rem 0;
    }
    
    .article-content li {
        font-size: 0.95rem;
        margin-bottom: 0.6rem;
    }
    
    .article-table {
        font-size: 0.8rem;
        display: block;
        overflow-x: auto;
        white-space: nowrap;
        margin: 1.5rem -1rem;
    }
    
    .article-table th,
    .article-table td {
        padding: 0.6rem 0.4rem;
        min-width: 100px;
    }
    
    .article-table th {
        font-size: 0.75rem;
    }
    
    .highlight-box {
        padding: 1rem;
        margin: 1.5rem 0;
        border-radius: 6px;
    }
    
    .highlight-box h4 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }
    
    .highlight-box p {
        font-size: 0.9rem;
        margin-bottom: 0;
    }
    
    .share-btn {
        padding: 8px 12px;
        font-size: 0.8rem;
        margin: 0.25rem;
    }
    
    .share-buttons {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .related-card {
        margin-bottom: 1rem;
    }
    
    .related-card-content {
        padding: 1rem;
    }
    
    .related-card h4 {
        font-size: 1rem;
        line-height: 1.3;
    }
    
    .related-card p {
        font-size: 0.85rem;
    }
    
    .article-image {
        margin: 1.5rem -1rem;
    }
    
    .article-image img {
        border-radius: 0;
    }
    
    .article-nav {
        padding: 1.5rem 1rem;
    }
    
    .article-nav a {
        padding: 1rem;
        font-size: 0.9rem;
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .article-header {
        padding: 0 1rem 2rem;
        margin-bottom: 2rem;
    }
    
    .related-articles {
        padding: 2rem 1rem;
    }
    
    .article-share {
        padding: 2rem 1rem;
    }

    /* Privacy & Safety Mobile Styles */
    .privacy-hero {
        padding: 60px 0;
    }

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

    .privacy-hero p {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .privacy-features,
    .safety-features,
    .data-protection,
    .trust-verification,
    .privacy-cta {
        padding: 50px 0;
    }

    .privacy-features h2,
    .safety-features h2,
    .data-protection h2,
    .trust-verification h2 {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }

    .features-grid,
    .safety-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .feature-card,
    .safety-card {
        padding: 1.5rem;
    }

    .security-content,
    .offline-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .security-text h2,
    .offline-text h2 {
        font-size: 1.8rem;
    }

    .security-text p,
    .offline-text p {
        font-size: 1rem;
    }

    .protection-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .protection-item {
        padding: 1.5rem;
    }



    .privacy-cta .cta-content h2 {
        font-size: 1.8rem;
    }

    .privacy-cta .cta-content p {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .privacy-cta .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .privacy-cta .btn {
        width: 100%;
        max-width: 300px;
    }
}