:root {
    --primary-color: #4A89A4;
    --secondary-color: #64A1BD;
    --accent-color: #FFF5E1;
    --text-color: #333;
    --bg-color: #f4f7f6;
    --card-bg: #fff;
    --section-padding: 60px 20px;
    --max-width: 1000px;
}

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

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s;
}

a:hover {
    opacity: 0.8;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 80px 20px;
    text-align: center;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.subtitle {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    background-color: var(--accent-color);
    color: #333;
    padding: 15px 30px;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Features Section */
#features {
    padding: var(--section-padding);
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 50px;
    color: var(--primary-color);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 1.3rem;
}

/* About Section */
#about {
    background-color: #e9eff1;
    padding: var(--section-padding);
    text-align: center;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-content p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

/* Keywords */
#keywords {
    padding: 40px 20px;
    text-align: center;
    font-size: 0.9rem;
    color: #888;
}

/* Footer */
footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 20px;
    font-size: 0.9rem;
}

@media (max-width: 600px) {
    h1 {
        font-size: 2rem;
    }
}