:root {
    --bg: #0f172a;
    --card: #111827;
    --muted: #94a3b8;
    --text: #e5e7eb;
    --brand: #22d3ee;
    --brand2: #818cf8;
}
* {
    box-sizing: border-box;
}
body {
    margin: 0;
    font-family: "Vazirmatn", system-ui, -apple-system, "Segoe UI", Roboto,
        Arial, sans-serif;
    line-height: 1.9;
    background: radial-gradient(
            1200px 600px at 100% -20%,
            rgba(130, 180, 255, 0.15),
            transparent 60%
        ),
        radial-gradient(
            900px 500px at -10% 110%,
            rgba(34, 211, 238, 0.16),
            transparent 60%
        ),
        var(--bg);
    color: var(--text);
}
a {
    text-decoration: none;
    color: inherit;
}
.container {
    max-width: 1080px;
    margin-inline: auto;
    padding: 24px;
}
.site-header {
    position: sticky;
    top: 0;
    backdrop-filter: blur(6px);
    background: linear-gradient(
        to bottom,
        rgba(15, 23, 42, 0.8),
        rgba(15, 23, 42, 0)
    );
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.header-inner {
    display: flex;
    align-items: center;
    gap: 16px;
}
.brand {
    font-weight: 800;
    letter-spacing: 0.5px;
    font-size: 18px;
}
nav {
    display: flex;
    gap: 16px;
    align-items: center;
}
.spacer {
    flex: 1;
}
.btn {
    display: inline-block;
    padding: 10px 16px;
    border-radius: 12px;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.14);
    transition: 0.2s ease;
}
.btn-primary {
    background: linear-gradient(135deg, var(--brand), var(--brand2));
    color: #0b1020;
    border: none;
}
.btn:hover {
    transform: translateY(-2px);
}
.hero {
    padding: 64px 0 32px;
    text-align: center;
}
.hero h1 {
    margin: 0 0 12px;
    font-size: 40px;
    line-height: 1.2;
}
.hero p {
    margin: 0 auto 24px;
    color: var(--muted);
    max-width: 700px;
}
.grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.card {
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.03),
        rgba(255, 255, 255, 0.01)
    );
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 18px;
    min-height: 140px;
}
.card h3 {
    margin: 0 0 8px;
    font-size: 18px;
}
.card p {
    margin: 0;
    color: var(--muted);
}
.site-footer {
    padding: 32px 0;
    color: var(--muted);
    text-align: center;
}
.logo {
    inline-size: 28px;
    block-size: 28px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--brand), var(--brand2));
    display: inline-block;
    vertical-align: middle;
    margin-left: 8px;
}