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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #ffffff;
    color: #1d1d1f;
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header & Navigation */
.header {
    padding: 20px 0;
    background-color: #ffffff;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid #e5e5e7;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: #007aff;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 8px;
}

.nav-link {
    font-size: 1rem;
    font-weight: 500;
    color: #1d1d1f;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 8px;
    transition: background-color 0.2s;
}

.nav-link:hover {
    background-color: #f5f5f7;
}

/* Hero Section */
.hero {
    padding: 80px 0 60px;
    text-align: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 100%);
}

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

.app-icon {
    width: 120px;
    height: 120px;
    border-radius: 25px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: #1d1d1f;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #6e6e73;
    margin-bottom: 40px;
    font-weight: 400;
}

.btn-appstore {
    display: inline-block;
    transition: transform 0.2s;
}

.btn-appstore:hover {
    transform: scale(1.05);
}

.btn-appstore img {
    height: auto;
}

.download-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
}

.qr-code-container {
    display: none;
}

.qr-code-text {
    font-size: 0.875rem;
    color: #6e6e73;
    margin-top: 10px;
    font-weight: 400;
}

.qr-code {
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

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

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.feature-row.reverse {
    direction: rtl;
}

.feature-row.reverse > * {
    direction: ltr;
}

.feature-item {
    padding: 20px;
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 2rem;
    font-weight: 600;
    color: #1d1d1f;
    margin-bottom: 15px;
}

.feature-item p {
    font-size: 1.125rem;
    color: #6e6e73;
    line-height: 1.6;
}

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

.phone-mockup {
    width: 300px;
    height: 500px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.feature-screenshot {
    max-width: 300px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.storage-chart, .swipe-demo {
    padding: 20px;
    text-align: center;
}

.cloud-logos {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    padding: 40px;
}

.cloud-icon {
    background-color: #f5f5f7;
    padding: 30px;
    border-radius: 20px;
    font-size: 1.125rem;
    font-weight: 600;
    color: #1d1d1f;
    text-align: center;
    transition: transform 0.2s;
}

.cloud-icon:hover {
    transform: translateY(-5px);
    background-color: #e8e8ed;
}

/* Benefits Section */
.benefits {
    padding: 80px 0;
    background-color: #f5f5f7;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1d1d1f;
    text-align: center;
    margin-bottom: 60px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.benefit-card {
    background-color: #ffffff;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.benefit-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.benefit-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1d1d1f;
    margin-bottom: 10px;
}

.benefit-card p {
    font-size: 1rem;
    color: #6e6e73;
    line-height: 1.5;
}

/* CTA Section */
.cta-section {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.cta-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.95;
}

/* Blog Section */
.blog-section {
    padding: 80px 0;
    background-color: #ffffff;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #6e6e73;
    margin-top: -40px;
    margin-bottom: 50px;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.blog-card-home {
    background: #ffffff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    text-decoration: none;
    transition: transform 0.3s, box-shadow 0.3s;
}

.blog-card-home:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}

.blog-card-image {
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.blog-card-icon {
    font-size: 3rem;
}

.blog-card-content {
    padding: 20px;
}

.blog-card-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1d1d1f;
    margin-bottom: 8px;
    line-height: 1.3;
}

.blog-card-content p {
    font-size: 0.9rem;
    color: #6e6e73;
    line-height: 1.5;
}

.blog-view-all {
    text-align: center;
}

.btn-secondary {
    display: inline-block;
    padding: 14px 32px;
    background-color: #f5f5f7;
    color: #1d1d1f;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: background-color 0.2s;
}

.btn-secondary:hover {
    background-color: #e8e8ed;
}

/* Related Articles */
.related-articles {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid #e5e5e5;
}

.related-articles h2 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.related-articles ul {
    list-style: none;
    padding: 0;
}

.related-articles li {
    margin-bottom: 10px;
}

.related-articles a {
    color: #0071e3;
    text-decoration: none;
    font-size: 1rem;
}

.related-articles a:hover {
    text-decoration: underline;
}

/* FAQ Section */
.faq-section {
    padding: 80px 0;
    background-color: #f5f5f7;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: #ffffff;
    padding: 30px 35px;
    border-radius: 16px;
}

.faq-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1d1d1f;
    margin-bottom: 15px;
}

.faq-item p {
    font-size: 0.95rem;
    color: #6e6e73;
    line-height: 1.7;
    margin: 0 0 12px 0;
}

.faq-item p:last-child {
    margin-bottom: 0;
}

/* Featured Section */
.featured-grid {
    display: flex;
    justify-content: center;
    gap: 25px;
    flex-wrap: wrap;
}

.featured-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: #f5f5f7;
    padding: 20px 30px;
    border-radius: 16px;
    text-decoration: none;
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
}

.featured-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    background: #ffffff;
}

.featured-thumb {
    width: 80px;
    height: 80px;
    border-radius: 12px;
    overflow: hidden;
    flex-shrink: 0;
}

.featured-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.featured-content h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1d1d1f;
    margin-bottom: 4px;
    line-height: 1.3;
}

.featured-content p {
    font-size: 0.875rem;
    color: #6e6e73;
    margin: 0;
}

/* Footer */
.footer {
    background-color: #1d1d1f;
    color: #f5f5f7;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.footer-section p {
    color: #a1a1a6;
    font-size: 0.875rem;
}

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

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

.footer-section ul li a {
    color: #a1a1a6;
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.footer-section ul li a:hover {
    color: #f5f5f7;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #424245;
}

.footer-bottom p {
    color: #a1a1a6;
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-icon {
        width: 100px;
        height: 100px;
        margin-bottom: 20px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .feature-row {
        grid-template-columns: 1fr;
        gap: 40px;
        margin-bottom: 60px;
    }

    .feature-row.reverse {
        direction: ltr;
        display: flex;
        flex-direction: column-reverse;
    }

    .phone-mockup {
        width: 250px;
        height: 450px;
    }

    .feature-screenshot {
        max-width: 250px;
    }

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

    .section-title {
        font-size: 2rem;
    }

    .cta-section h2 {
        font-size: 2rem;
    }

    .cta-section p {
        font-size: 1rem;
    }
}

/* Desktop only - Show QR code */
@media (min-width: 769px) {
    .qr-code-container {
        display: block;
    }
}