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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, #6c5ce7 0%, #5f3dc4 100%);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav {
    padding: 1rem 0;
}

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

.nav-brand svg {
    cursor: pointer;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #00ff88;
}

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

.btn-login {
    background: transparent;
    border: 2px solid white;
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-login:hover {
    background: white;
    color: #6c5ce7;
}

.btn-signup {
    background: #00ff88;
    color: #333;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-signup:hover {
    background: #00e67d;
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(108, 92, 231, 0.8), rgba(95, 61, 196, 0.8)), url('hero-background.jpg');
    background-size: cover;
    background-position: center;
    padding: 150px 0 100px;
    color: white;
    text-align: center;
}

.hero-content {
    max-width: 600px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #00ff88;
}

.hero-text {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

.btn-primary {
    background: #00ff88;
    color: #333;
    padding: 1rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 255, 136, 0.3);
}

.btn-primary:hover {
    background: #00e67d;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 255, 136, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
    padding: 1rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: white;
    color: #6c5ce7;
}

/* Features Section */
.features {
    padding: 80px 0;
    background: white;
}

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

.feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    background: #f8f9fa;
    transition: transform 0.3s ease;
}

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

.feature-icon {
    margin-bottom: 1rem;
    display: flex;
    justify-content: center;
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* SEO Content */
.seo-content {
    padding: 80px 0;
    background: white;
}

.main-content {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.main-content h1 {
    font-size: 2.5rem;
    color: #6c5ce7;
    margin-bottom: 2rem;
    text-align: center;
}

.main-content h2 {
    font-size: 2rem;
    color: #333;
    margin: 2.5rem 0 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid #00ff88;
}

.main-content h3 {
    font-size: 1.5rem;
    color: #6c5ce7;
    margin: 2rem 0 1rem;
}

.main-content p {
    margin-bottom: 1.5rem;
    color: #555;
    text-align: justify;
}

.info-table {
    margin: 2rem 0;
    background: #f8f9fa;
    border-radius: 10px;
    padding: 1.5rem;
    overflow-x: auto;
}

.table-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
    text-align: center;
}

.info-table table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.info-table th,
.info-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.info-table th {
    background: #6c5ce7;
    color: white;
    font-weight: 600;
}

.info-table tr:hover {
    background: #f5f5f5;
}

/* Author Bio */
.author-bio {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 2rem;
    margin: 3rem 0;
}

.author-info {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.author-photo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
}

.author-name {
    font-size: 1.3rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.author-title {
    font-size: 1rem;
    color: #6c5ce7;
    margin-bottom: 0.5rem;
}

.author-credentials {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.author-contact {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.author-contact a {
    color: #6c5ce7;
    text-decoration: none;
}

.publish-date {
    font-size: 0.85rem;
    color: #888;
    font-style: italic;
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, #6c5ce7 0%, #5f3dc4 100%);
    padding: 80px 0;
    color: white;
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

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

/* Footer */
.footer {
    background: #333;
    color: white;
    padding: 60px 0 20px;
}

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

.footer-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #00ff88;
}

.footer-section p {
    line-height: 1.6;
    margin-bottom: 1rem;
    opacity: 0.8;
}

.footer-license {
    font-size: 0.9rem;
    color: #888;
}

.footer-links {
    list-style: none;
}

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

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

.footer-links a:hover {
    color: #00ff88;
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

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

.footer-disclaimer {
    font-size: 0.9rem;
    color: #ff6b6b;
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 300px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .main-content h1 {
        font-size: 2rem;
    }
    
    .main-content h2 {
        font-size: 1.5rem;
    }
    
    .main-content h3 {
        font-size: 1.3rem;
    }
    
    .author-info {
        flex-direction: column;
        text-align: center;
    }
    
    .author-photo {
        align-self: center;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .info-table {
        font-size: 0.9rem;
    }
    
    .info-table th,
    .info-table td {
        padding: 0.5rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .features {
        padding: 60px 0;
    }
    
    .seo-content {
        padding: 60px 0;
    }
    
    .cta {
        padding: 60px 0;
    }
    
    .cta-title {
        font-size: 1.8rem;
    }
    
    .main-content h1 {
        font-size: 1.8rem;
    }
    
    .info-table {
        padding: 1rem;
        font-size: 0.8rem;
    }
    
    .info-table th,
    .info-table td {
        padding: 0.4rem 0.2rem;
    }
}