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

/* Sticky Footer */
html, body {
    height: 100%;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8fafc;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main {
    flex: 1;
}

.footer {
    margin-top: auto;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

.nav-link:hover {
    opacity: 0.8;
}

/* Buttons */
.btn {
    padding: 1rem 2rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    display: inline-block;
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: #007bff;
    color: white;
}

.btn-primary:hover {
    background: #0056b3;
    transform: translateY(-2px);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #545b62;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #007bff;
    border: 2px solid #007bff;
}

.btn-outline:hover {
    background: #007bff;
    color: white;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

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

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* Features Section */
.features {
    padding: 4rem 0;
    background: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: #333;
}

/* How It Works Section */
.how-it-works {
    padding: 4rem 0;
}

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

.step {
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: #007bff;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

/* Pricing Section */
.pricing-preview {
    padding: 4rem 0;
    background: #f8f9fa;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    position: relative;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.pricing-card.popular {
    border: 2px solid #007bff;
    transform: scale(1.05);
}

.popular-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: #007bff;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
}

.price {
    font-size: 2.5rem;
    font-weight: bold;
    margin: 1rem 0;
    color: #007bff;
}

.features-list {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
    text-align: left;
}

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

.period {
    font-size: 1rem;
    font-weight: normal;
    color: #666;
}

/* Articles Section */
.latest-articles {
    padding: 4rem 0;
}

.articles-preview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.article-preview {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.article-preview h3 {
    margin-bottom: 1rem;
}

.article-preview h3 a {
    text-decoration: none;
    color: #333;
}

.article-preview h3 a:hover {
    color: #007bff;
}

.read-more {
    color: #007bff;
    text-decoration: none;
    font-weight: 500;
}

.read-more:hover {
    text-decoration: underline;
}

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

/* CTA Section */
.cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

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

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

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

/* Articles Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.article-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.article-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.article-meta {
    margin-bottom: 1rem;
}

.category {
    background: #667eea;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-block;
}

.article-card h2 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2d3748;
}

.article-card h2 a {
    color: inherit;
    text-decoration: none;
}

.article-card h2 a:hover {
    color: #667eea;
}

.article-card p {
    color: #718096;
    margin-bottom: 1rem;
    line-height: 1.6;
}

/* Single Post */
.post {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.post-header {
    margin-bottom: 2rem;
    text-align: center;
}

.post-header .post-category {
    background: #667eea;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-block;
    margin-bottom: 1rem;
}

.post-header .post-title {
    font-size: 2.2rem;
    margin: 1rem 0;
    color: #2d3748;
}

.post-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #4a5568;
}

.post-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #e2e8f0;
}

.back-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.back-link:hover {
    text-decoration: underline;
}

/* Download Page Styles */
.download-section {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 0;
}

.download-card {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid #e8ecef;
}

.download-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid #f8f9fa;
}

.app-icon {
    font-size: 4rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-info h2 {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
    color: #2d3748;
}

.version-info {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.version-info span {
    background: #f8f9fa;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    color: #6c757d;
}

.download-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 15px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 0.3rem;
}

.stat-label {
    font-size: 0.9rem;
    color: #6c757d;
}

.system-requirements {
    margin: 3rem 0;
}

.system-requirements h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #2d3748;
}

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

.requirement {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.req-icon {
    font-size: 1.5rem;
}

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

.req-content strong {
    font-weight: 600;
    color: #2d3748;
    font-size: 0.9rem;
}

.req-content span {
    font-size: 0.9rem;
    color: #6c757d;
}

.download-main {
    margin: 3rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    padding: 3rem;
    color: white;
}

.download-hero {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 3rem;
    align-items: center;
}

.download-hero-content h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.download-hero-content p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

.download-file-info {
    display: flex;
    gap: 2rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

.download-action {
    text-align: center;
}

.btn-download-main {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 2.5rem;
    background: white;
    color: #667eea;
    font-weight: 600;
    font-size: 1.2rem;
    border-radius: 15px;
    text-decoration: none;
    transition: all 0.3s;
    min-width: 220px;
}

.btn-download-main:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.download-subtext {
    font-size: 0.8rem;
    opacity: 0.7;
    font-weight: normal;
}

.installation-guide {
    margin: 3rem 0;
}

.installation-guide h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #2d3748;
}

.steps {
    display: grid;
    gap: 1.5rem;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 15px;
}

.step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.step-content h4 {
    margin-bottom: 0.5rem;
    color: #2d3748;
}

.step-content p {
    color: #6c757d;
    margin: 0;
}

.security-note {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: #e8f5e8;
    border-radius: 15px;
    border-left: 4px solid #4caf50;
}

.security-icon {
    font-size: 2rem;
}

.security-content h4 {
    margin-bottom: 0.5rem;
    color: #2d3748;
}

.security-content p {
    color: #6c757d;
    margin: 0;
    line-height: 1.5;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 2rem 0;
}

.pagination a,
.pagination span {
    padding: 0.5rem 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    text-decoration: none;
}

.pagination a:hover {
    background: #f8f9fa;
}

.pagination .current {
    background: #007bff;
    color: white;
    border-color: #007bff;
}

/* Footer */
.footer {
    background: #2d3748;
    color: white;
    text-align: center;
    padding: 2rem 0;
}
.note {
    background: #e8f4fd;
    border-left: 4px solid #2196F3;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 8px;
}

.note strong {
    color: #1976D2;
}

.warning {
    background: #ffebee;
    border-left: 4px solid #f44336;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 8px;
}

.warning h3 {
    color: #d32f2f;
    margin-top: 0;
}

.warning ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.warning li {
    margin-bottom: 0.5rem;
}

.feature-list {
    margin: 2rem 0;
}

.feature-item {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    border-left: 4px solid #667eea;
}

.feature-item h3 {
    margin-top: 0;
    color: #667eea;
}

@media (max-width: 768px) {
    .feature-item {
        padding: 1rem;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .nav {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

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

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

    .pricing-card.popular {
        transform: none;
    }

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

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

    .features-grid,
    .steps,
    .pricing-cards,
    .articles-preview,
    .articles-grid {
        grid-template-columns: 1fr;
    }

    .download-hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .download-file-info {
        flex-direction: column;
        gap: 0.5rem;
    }

    .step {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 2rem 0;
    }

    .features,
    .how-it-works,
    .pricing-preview,
    .latest-articles {
        padding: 2rem 0;
    }

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

    .download-card {
        padding: 1.5rem;
    }
}