:root {
    --bg-color: #121212;
    --card-color: #1E1E1E;
    --border-color: #2d2d2d;
    --text-primary: #E0E0E0;
    --text-secondary: #B0B0B0;
    --accent-color: #00BFFF;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    padding: 20px;
    text-align: center;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px 0;
    margin-bottom: 2rem;
}
.site-header .header-logo {
    height: 60px;
}
.site-header .title-block {
    margin: 0 20px;
}
.site-header h1 { color: var(--text-primary); font-weight: 700; font-size: 2.5rem; }
.site-header h1 span { color: var(--accent-color); }

.landing-container { max-width: 900px; margin: 0 auto; }

.hero-section {
    margin-bottom: 4rem;
}
.hero-section h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}
.hero-section p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem auto;
}
.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: #fff;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 191, 255, 0.2);
}
.cta-button i {
    margin-right: 0.5rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}
.feature-card {
    background-color: var(--card-color);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}
.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}
.feature-card h3 i {
    display: block;
    margin-bottom: 1rem;
    font-size: 2rem;
}
.feature-card p {
    color: var(--text-secondary);
}

.site-footer { margin-top: 4rem; color: var(--text-secondary); font-size: 0.9rem; }