:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --bg-color: #ffffff;
    --bg-alt: #f8fafc;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 24px;
}

nav a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
}

nav a:hover {
    color: var(--primary-color);
}

.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 80px 0;
    gap: 60px;
}

.hero-content {
    flex: 1;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0 0 16px 0;
    color: var(--text-color);
    line-height: 1.2;
}

.hero p {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin: 0 0 24px 0;
}

.hero-image {
    flex: 1;
    text-align: right;
}

.hero-image img {
    max-width: 100%;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.cta-buttons {
    display: flex;
    gap: 12px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: white;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-alt);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.features {
    padding: 60px 0;
    background-color: var(--bg-alt);
    margin: 0 -20px;
    padding-left: 20px;
    padding-right: 20px;
}

.features h2 {
    text-align: center;
    font-size: 1.75rem;
    margin: 0 0 40px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.feature-card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
}

.feature-card h3 {
    font-size: 1.125rem;
    margin: 0 0 8px 0;
    color: var(--primary-color);
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}

footer {
    text-align: center;
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    margin-top: 40px;
}

footer p {
    color: var(--text-muted);
    margin: 0 0 12px 0;
    font-size: 0.875rem;
}

footer nav ul {
    justify-content: center;
}

footer a {
    color: var(--text-muted);
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    .hero {
        flex-direction: column-reverse;
        text-align: center;
        padding: 40px 0;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

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

    .cta-buttons {
        justify-content: center;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    header {
        flex-direction: column;
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}