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

html {
    color-scheme: light;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
}

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

/* Navigation */
.navbar {
    background: #fff;
    border-bottom: 1px solid #eee;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #0066cc;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    flex-wrap: wrap;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
}

.nav-links a:hover {
    color: #0066cc;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background: #0066cc;
    color: white;
}

.btn-primary:hover {
    background: #0052a3;
    transform: translateY(-2px);
}

.btn-secondary {
    background: white;
    color: #0066cc;
    margin-left: 1rem;
}

.btn-secondary:hover {
    background: #f0f0f0;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.cta-buttons {
    margin-top: 2rem;
}

/* Sections */
.why-section,
.what-section,
.start-section {
    padding: 4rem 0;
    border-bottom: 1px solid #eee;
    background: #fff;
}

.why-section h2,
.what-section h2,
.start-section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

/* Three Column Layout */
.three-column {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.column {
    padding: 2rem;
    background: #f9f9f9;
    border-radius: 0.5rem;
}

.column h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

/* Features List */
.features {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.features li {
    padding: 1.5rem;
    background: #f9f9f9;
    border-radius: 0.5rem;
}

/* Steps */
.steps {
    background: #f9f9f9;
    padding: 2rem;
    border-radius: 0.5rem;
    margin: 2rem 0;
    list-style: decimal-leading-zero;
    list-style-position: inside;
}

.steps li {
    margin: 1rem 0;
    font-size: 1.1rem;
}

.start-section {
    text-align: center;
}

.start-section .steps {
    text-align: left;
}

.start-section .btn-primary {
    margin-top: 1rem;
}

/* Footer */
footer {
    background: #333;
    color: white;
    padding: 2rem 0;
    text-align: center;
}

footer a {
    color: #7ea8e0;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero {
        padding: 4rem 0;
    }

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

    .nav-links {
        gap: 1rem;
    }

    .why-section h2,
    .what-section h2,
    .start-section h2 {
        font-size: 1.8rem;
    }

    .cta-buttons {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }

    .btn-secondary {
        margin-left: 0;
    }
}