:root {
    --rf-bg: #0a0f1f;
    --rf-bg-2: #0d1427;
    --rf-bg-3: #121a30;
    --rf-card: #141c33;
    --rf-border: #1f2a47;
    --rf-text: #ffffff;
    --rf-muted: #b8bdd1;
    --rf-accent: #3e7bff;
    --rf-accent-2: #5b94ff;
    --rf-topbar-bg: #000000;
    --rf-features-bg: #060a15;
    --rf-radius-lg: 24px;
    --rf-radius-md: 16px;
    --rf-radius-sm: 10px;
    --rf-container: 1320px;
    --rf-font-display: 'Russo One', 'Arial Black', sans-serif;
    --rf-font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    background: var(--rf-bg);
    color: var(--rf-text);
    font-family: var(--rf-font-body);
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: 0;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--rf-font-display);
    font-weight: 400;
    margin: 0;
    letter-spacing: 1px;
    text-transform: uppercase;
}

p {
    margin: 0 0 1em;
}

.rf-site {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.rf-container {
    width: 100%;
    max-width: var(--rf-container);
    margin: 0 auto;
    padding: 0 24px;
}

.rf-accent {
    color: var(--rf-accent);
}

.rf-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 48px;
    border-radius: 999px;
    background: linear-gradient(135deg, #3d7dff 0%, #5b94ff 100%);
    color: #ffffff;
    font-family: var(--rf-font-display);
    font-size: 18px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    box-shadow: 0 8px 24px rgba(61, 125, 255, 0.35);
    transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
    white-space: nowrap;
}

.rf-btn:hover {
    transform: translateY(-1px);
    filter: brightness(1.05);
    box-shadow: 0 12px 30px rgba(61, 125, 255, 0.5);
}

.rf-btn--ghost {
    background: #ffffff;
    color: #0a0f1f;
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.08);
}

.rf-section {
    padding: 80px 0;
    position: relative;
}

.rf-section__title {
    font-size: 48px;
    line-height: 1.1;
    text-align: center;
    margin: 0 0 16px;
}

.rf-section__subtitle {
    text-align: center;
    font-size: 16px;
    color: var(--rf-muted);
    max-width: 720px;
    margin: 0 auto 48px;
}

@media (max-width: 768px) {
    .rf-section {
        padding: 48px 0;
    }
    .rf-section__title {
        font-size: 32px;
    }
    .rf-btn {
        padding: 14px 32px;
        font-size: 15px;
    }
}