:root {
    --bg: #0f172a;
    --panel: #111827;
    --panel2: #1f2937;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --accent: #38bdf8;
    --accent2: #a78bfa;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: radial-gradient(circle at top left, #1e293b, var(--bg));
    color: var(--text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
}

a {
    color: var(--accent);
    text-decoration: none;
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 7vw;
}

.brand {
    font-weight: 800;
    font-size: 1.25rem;
    color: white;
}

nav {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
}

nav a {
    color: var(--muted);
}

nav a:hover {
    color: white;
}

.hero {
    padding: 90px 7vw 70px;
    max-width: 1100px;
}

.hero h1 {
    font-size: clamp(2.4rem, 6vw, 5rem);
    line-height: 1.02;
    margin: 0 0 24px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--muted);
    max-width: 760px;
}

.actions {
    display: flex;
    gap: 16px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.button {
    padding: 13px 20px;
    border-radius: 999px;
    background: var(--accent);
    color: #020617;
    font-weight: 700;
}

.button.secondary {
    background: var(--panel2);
    color: white;
}

.section {
    padding: 40px 7vw;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
}

.card {
    background: rgba(17, 24, 39, 0.82);
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: 22px;
    padding: 24px;
}

.card h3 {
    margin-top: 0;
}

.site-footer {
    padding: 40px 7vw;
    color: var(--muted);
}

.manual-content {
    max-width: 980px;
}

.manual-content h1,
.manual-content h2,
.manual-content h3 {
    line-height: 1.2;
}

.manual-content pre {
    overflow-x: auto;
    padding: 16px;
    border-radius: 14px;
    background: #020617;
}

.manual-content code {
    color: #bae6fd;
}

.manual-content table {
    width: 100%;
    border-collapse: collapse;
    overflow-x: auto;
}

.manual-content th,
.manual-content td {
    border-bottom: 1px solid rgba(148, 163, 184, 0.22);
    padding: 10px;
    text-align: left;
}