:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --text-color: #1f2937;
    --bg-color: #f3f4f6;
    --white: #ffffff;
    --gray: #6b7280;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

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

/* Header */
header {
    background: var(--white);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.2s;
}

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

/* Hero */
.hero {
    background: var(--white);
    padding: 5rem 0;
    text-align: center;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.btn-large {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-size: 1.125rem;
    font-weight: 600;
    transition: background-color 0.2s;
}

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

/* Features */
.features {
    padding: 3rem 0;
    flex-grow: 1;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.feature-card p {
    color: var(--gray);
}

/* Footer */
footer {
    background: var(--white);
    padding: 2rem 0;
    margin-top: auto;
    border-top: 1px solid #e5e7eb;
}

.footer-links {
    text-align: center;
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--gray);
    text-decoration: none;
    margin: 0 0.5rem;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.separator {
    color: #e5e7eb;
}

.copyright {
    text-align: center;
    color: #9ca3af;
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
}