:root {
    --primary-color: #3B82F6;
    --primary-dark: #1E40AF;
    --gray-light: #F3F4F6;
    --gray-medium: #E5E7EB;
    --gray-dark: #1F2937;
    --white: #FFFFFF;
    --text-primary: #111827;
    --text-secondary: #6B7280;
}

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

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    background-color: var(--white);
}

body {
    display: flex;
    flex-direction: column;
}

/* Brand Header */
.brand-header {
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-medium);
    padding: 1.5rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.brand-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.brand-logo svg {
    width: 50px;
    height: 50px;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Main Content */
main {
    flex: 1;
}

/* Hero Section */
.hero {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.cta-button {
    padding: 0.75rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.cta-button:hover {
    background-color: var(--primary-dark);
}

.cta-button.large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* Features Section */
.features {
    background-color: var(--gray-light);
    padding: 4rem 2rem;
    text-align: center;
}

.features h2, .products h2, .testimonials h2, .how-it-works h2, .problem-section h2, .cta-section h2, .contact h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

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

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Problem Section */
.problem-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    text-align: center;
}

.problem-section p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 1rem auto;
    line-height: 1.6;
}

/* How It Works */
.how-it-works {
    background-color: var(--gray-light);
    padding: 4rem 2rem;
}

.how-it-works {
    max-width: 1200px;
    margin: 0 auto;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.step {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
}

.step-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    line-height: 50px;
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.step h3 {
    font-size: 1.25rem;
    margin: 1rem 0 0.5rem;
    color: var(--text-primary);
}

.step p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Testimonials */
.testimonials {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    text-align: center;
}

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

.testimonial {
    background-color: var(--gray-light);
    padding: 2rem;
    border-radius: 12px;
    text-align: left;
}

.testimonial p {
    font-size: 0.95rem;
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 1rem;
    font-style: italic;
}

.testimonial .author {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
}

/* Products Section */
.products {
    background-color: var(--gray-light);
    padding: 4rem 2rem;
}

.products {
    max-width: 1200px;
    margin: 0 auto;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.product-card {
    background-color: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    border: 2px solid var(--gray-medium);
    position: relative;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.product-card.highlighted {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-color);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
}

.product-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.product-card .price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.product-card .price span {
    font-size: 0.5em;
    color: var(--text-secondary);
}

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

.features-list li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.product-button {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    background-color: var(--gray-medium);
    color: var(--text-primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.product-button:hover {
    background-color: #D1D5DB;
}

.product-button.primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.product-button.primary:hover {
    background-color: var(--primary-dark);
}

/* CTA Section */
.cta-section {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 4rem 2rem;
    text-align: center;
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.cta-section .cta-button {
    background-color: var(--white);
    color: var(--primary-color);
    font-weight: 700;
}

.cta-section .cta-button:hover {
    background-color: var(--gray-light);
}

/* Contact Section */
.contact {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    text-align: center;
}

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

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

.contact-item h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-item a,
.contact-item p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    text-decoration: none;
}

.contact-item a:hover {
    color: var(--primary-color);
}

/* Footer */
.footer {
    background-color: var(--gray-dark);
    color: var(--white);
    padding: 3rem 2rem 1rem;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--white);
    font-weight: 600;
}

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

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

.footer-section ul li a {
    color: #D1D5DB;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9CA3AF;
    font-size: 0.9rem;
}

/* Image Placeholders */
.image-placeholder {
    background-color: var(--gray-light);
    border: 2px dashed var(--gray-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
        padding: 2rem 1rem;
    }

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

    .features h2, .products h2, .testimonials h2, .how-it-works h2, .problem-section h2, .cta-section h2, .contact h2 {
        font-size: 1.75rem;
    }

    .product-card.highlighted {
        transform: scale(1);
    }

    .features-grid, .testimonials-grid, .products-grid, .steps-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}