:root {
    --primary-color: #0071e3;
    --primary-dark: #0077ed;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --background-light: #fbfbfd;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --border-radius: 12px;
}

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

body {
    font-family: -apple-system, "SF Pro Display", "SF Pro Text", system-ui, sans-serif;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -.022em;
    color: var(--text-primary);
    background-color: white;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navigation */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: 1.3rem;
    color: var(--text-primary);
}

.logo-image {
    height: 32px;
    width: auto;
    display: block;
}

.logo span {
    display: inline-block;
}

/* Buttons */
.btn-primary {
    background-color: #8c2f39;
    color: white;
    border: none;
    padding: 0.5rem;
    margin:0;
    border-radius: 5px;
    font-size: 1.25rem;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.2s ease;
    letter-spacing: -0.01em;
}

.btn-primary:hover {
    background-color: #b23a48;
    transform: translateY(-1px);
}

.btn-large {
    font-size: 1.2rem;
    padding: 1rem 2.5rem;
}

/* Hero Section */
.hero {
    padding: var(--spacing-lg) 0 var(--spacing-md);
    background-color: var(--background-light);
}

.hero-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    line-height: 1.1;
    letter-spacing: -0.045em;
    background: linear-gradient(180deg, var(--text-primary) 0%, #434344 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero .subtitle {
    font-size: 1.7rem;
    color: var(--text-secondary);
    font-weight: 400;
    letter-spacing: -0.022em;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.hero-graph {
    padding-right: var(--spacing-md);
}

.hero-graph .graph-image {
    width: 100%;
    max-width: 500px;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.1));
}

.hero-content {
    padding-left: var(--spacing-md);
}

.benefits-list {
    margin-top: 0;
}

.benefits-list h2 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

.hero .benefit-item {
    background: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    backdrop-filter: blur(20px) saturate(180%);
    margin-bottom: var(--spacing-sm);
    transition: all 0.3s ease;
    border: 1px solid rgba(0,0,0,0.1);
}

.hero .benefit-item:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.hero .benefit-item strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: -0.022em;
}

/* Benefits Section */
.benefits {
    padding: var(--spacing-lg) 0;
}

.benefit-items {
    display: grid;
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.benefit-item {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

/* Graph Grid */
.graph-grid, .example-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-sm) 0;
}

.graph-card, .example-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.graph-card:hover, .example-card:hover {
    transform: translateY(-5px);
}

.graph-image {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
}

/* Content Section */
.content {
    padding: var(--spacing-sm) 0;
    background-color: white;
}

.content-block {
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
}

.content-block h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    letter-spacing: -0.025em;
}
.content-block h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

.content-block p {
    padding-bottom: var(--spacing-sm);
    }

.content-block ul {
    list-style: none;
    margin-left: 0;
}

.content-block ul li {
    position: relative;
    padding-left: 1.5em;
    margin-bottom: 0.8em;
    color: var(--text-secondary);
}

.content-block ul li:before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* CTA Section */
.cta {
    padding: var(--spacing-lg) 0;
    text-align: center;
    background: var(--background-light);
}

.cta h2 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    letter-spacing: -0.035em;
    background: linear-gradient(135deg, var(--text-primary), #434344);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cta p {
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
    color: var(--text-secondary);
    letter-spacing: -0.022em;
}

/* Footer */
footer {
    padding: var(--spacing-md) 0;
    background-color: var(--background-light);
    color: var(--text-secondary);
    text-align: center;
    font-size: 0.9rem;
    border-top: 1px solid rgba(0,0,0,0.1);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 3.5rem;
    }
    
    .hero .subtitle {
        font-size: 1.5rem;
    }
    
    .cta h2 {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .hero-content {
        padding-left: 0;
    }
    
    .hero-graph {
        padding-right: 0;
    }
    
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .hero .subtitle {
        font-size: 1.3rem;
    }
    
    .cta h2 {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero .subtitle {
        font-size: 1.1rem;
    }
    
    .cta h2 {
        font-size: 2rem;
    }
    
    .btn-large {
        width: 100%;
    }
}