:root {
    --navy: #0A1A3F;
    --accent: #1E90FF;
}
html { scroll-behavior: smooth; }
body {
    font-family: Inter, system-ui, sans-serif;
    color: #0F172A;
    background: #fff;
}
.nav-link {
    color: #334155;
    font-weight: 500;
    font-size: 0.9375rem;
}
.nav-link:hover,
.nav-link.is-current { color: #0A1A3F; }
.nav-link.is-current { font-weight: 600; }
.btn-primary {
    background: #1E90FF;
    color: #fff;
    font-weight: 600;
    transition: background 0.2s ease;
}
.btn-primary:hover { background: #0B78E3; }
.btn-ghost {
    border: 1px solid #CBD5E1;
    color: #0F172A;
    font-weight: 600;
    background: #fff;
}
.btn-ghost:hover { border-color: #0A1A3F; }
.icon-tile {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.625rem;
    background: #EEF4FF;
    color: #1E90FF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
}
.card {
    border: 1px solid #E2E8F0;
    background: #fff;
    border-radius: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
    border-color: #BFDBFE;
    box-shadow: 0 12px 32px rgba(10, 26, 63, 0.06);
}
.hero-grid {
    background-image:
        linear-gradient(rgba(10, 26, 63, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(10, 26, 63, 0.03) 1px, transparent 1px);
    background-size: 48px 48px;
}
.brand {
    display: flex;
    align-items: center;
    text-decoration: none;
}
.brand-logo {
    height: 2.85rem;
    width: auto;
    display: block;
}
@media (min-width: 768px) {
    .brand-logo { height: 3.25rem; }
}
.prose-site p { color: #475569; line-height: 1.7; }
.prose-site h2 { color: #0A1A3F; }
.metric {
    font-weight: 800;
    letter-spacing: -0.03em;
    color: #0A1A3F;
}
#scrollToTopBtn {
    display: none;
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 40;
    background: #0A1A3F;
    color: #fff;
    border: none;
    border-radius: 9999px;
    width: 44px;
    height: 44px;
    cursor: pointer;
}