:root {
    --bg: #0f172a;
    --card: #1e293b;
    --accent: #22c55e;
    --text: #f8fafc;
    --dim: #94a3b8;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    line-height: 1.6;
}

header {
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -1px;
    text-decoration: none;
    color: var(--text);
}

.logo span { color: var(--accent); }

nav a {
    color: var(--text);
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.9rem;
}

.hero {
    text-align: center;
    padding: 4rem 1rem;
    max-width: 800px;
    margin: 0 auto;
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.acronym {
    color: var(--accent);
    font-weight: 300;
    display: block;
    font-size: 1.2rem;
    letter-spacing: 4px;
    margin-bottom: 1rem;
}

.lead {
    font-size: 1.25rem;
    color: var(--dim);
    margin-bottom: 2rem;
}

.cta-button {
    background-color: var(--accent);
    color: #000;
    padding: 1rem 2.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    transition: transform 0.2s;
    display: inline-block;
}

.cta-button:hover {
    transform: translateY(-2px);
}

.app-grid, .features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.app-card, .feature-card {
    background: var(--card);
    padding: 2.5rem;
    border-radius: 12px;
    text-align: center;
    border: 2px solid transparent;
    transition: border 0.3s;
}

.app-card:hover { border-color: var(--accent); }

.support-section {
    background: var(--card);
    padding: 4rem 2rem;
    text-align: center;
    max-width: 800px;
    margin: 4rem auto;
    border-radius: 12px;
}

footer {
    text-align: center;
    padding: 4rem;
    border-top: 1px solid var(--card);
    color: var(--dim);
}