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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
    background: #ffffff;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid #e5e5e5;
    z-index: 1000;
    padding: 1.25rem 2rem;
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a1a1a;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: #4a4a4a;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #1a1a1a;
}

.cta-button {
    background: #1a1a1a;
    color: #ffffff;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background: #333333;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    margin-top: 80px;
    padding: 6rem 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: #1a1a1a;
}

.hero p {
    font-size: 1.375rem;
    color: #4a4a4a;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
    flex-wrap: wrap;
}

.primary-button {
    background: #1a1a1a;
    color: #ffffff;
    padding: 1.125rem 2.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.primary-button:hover {
    background: #333333;
    transform: translateY(-2px);
}

.secondary-button {
    background: transparent;
    color: #1a1a1a;
    padding: 1.125rem 2.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    border: 2px solid #1a1a1a;
    transition: all 0.3s;
    cursor: pointer;
}

.secondary-button:hover {
    background: #1a1a1a;
    color: #ffffff;
}

/* Stats Section */
.stats {
    padding: 5rem 2rem;
    background: #ffffff;
}

.stats-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
}

.stat-card {
    text-align: center;
    padding: 2rem;
}

.stat-number {
    font-size: 4rem;
    font-weight: 800;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.25rem;
    color: #4a4a4a;
    font-weight: 500;
}

/* Section Styles */
section {
    padding: 5rem 2rem;
}

.section-header {
    max-width: 800px;
    margin: 0 auto 4rem;
    text-align: center;
}

.section-header h2 {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 1.25rem;
    color: #1a1a1a;
}

.section-header p {
    font-size: 1.25rem;
    color: #4a4a4a;
    line-height: 1.6;
}

/* Problems Section */
.problems {
    background: #f8f9fa;
}

.problems-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.problem-card {
    background: #ffffff;
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid #e5e5e5;
}

.problem-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.problem-card p {
    color: #4a4a4a;
    line-height: 1.6;
}

/* Solution Section */
.solution {
    background: #1a1a1a;
    color: #ffffff;
}

.solution .section-header h2,
.solution .section-header p {
    color: #ffffff;
}

.solution-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

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

.solution-icon {
    width: 80px;
    height: 80px;
    background: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
}

.solution-item h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.solution-item p {
    color: #d1d1d1;
    line-height: 1.6;
}

/* Features Section */
.features {
    background: #ffffff;
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
}

.feature-card {
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 12px;
    transition: all 0.3s;
}

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

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.feature-card p {
    color: #4a4a4a;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 0.5rem 0;
    color: #4a4a4a;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.feature-list li:before {
    content: "✓";
    color: #1a1a1a;
    font-weight: 700;
    font-size: 1.25rem;
}

/* Pricing Section */
.pricing {
    background: #f8f9fa;
}

.pricing-grid {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.pricing-card {
    background: #ffffff;
    padding: 3rem;
    border-radius: 12px;
    border: 2px solid #e5e5e5;
    text-align: center;
    transition: all 0.3s;
}

.pricing-card:hover {
    border-color: #1a1a1a;
    transform: translateY(-5px);
}

.pricing-card.featured {
    border-color: #1a1a1a;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.pricing-card h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.price {
    font-size: 3.5rem;
    font-weight: 800;
    color: #1a1a1a;
    margin: 1.5rem 0;
}

.price-period {
    font-size: 1.125rem;
    color: #4a4a4a;
    font-weight: 500;
}

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

.pricing-features li {
    padding: 0.75rem 0;
    color: #4a4a4a;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.pricing-features li:before {
    content: "✓";
    color: #1a1a1a;
    font-weight: 700;
    font-size: 1.25rem;
}

/* Testimonials Section */
.testimonials {
    background: #ffffff;
}

.testimonials-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.testimonial-card {
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 12px;
}

.testimonial-text {
    font-size: 1.125rem;
    color: #1a1a1a;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-info h4 {
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 0.25rem;
}

.author-info p {
    color: #4a4a4a;
    font-size: 0.9375rem;
}

/* CTA Section */
.final-cta {
    background: #1a1a1a;
    color: #ffffff;
    text-align: center;
    padding: 6rem 2rem;
}

.final-cta h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.final-cta p {
    font-size: 1.375rem;
    margin-bottom: 2.5rem;
    color: #d1d1d1;
}

.final-cta .primary-button {
    background: #ffffff;
    color: #1a1a1a;
}

.final-cta .primary-button:hover {
    background: #f8f9fa;
}

/* Footer */
footer {
    background: #f8f9fa;
    padding: 3rem 2rem;
    text-align: center;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: #4a4a4a;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #1a1a1a;
}

.copyright {
    color: #4a4a4a;
    font-size: 0.9375rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

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

    .stat-number {
        font-size: 3rem;
    }

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

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

/* Four Column Grid */
.four-column-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

@media (max-width: 1200px) {
    .four-column-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .four-column-grid {
        grid-template-columns: 1fr;
    }
}

/* Scroll Animation */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}