:root {
    --bg: #0f1a2e;
    --bg-elev: #16243d;
    --text: #e9edf4;
    --text-dim: #97a3b6;
    --accent: #ffcd00;
    --accent-soft: rgba(255, 205, 0, 0.12);
    --border: rgba(255, 255, 255, 0.08);
    --max-width: 920px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

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

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

header {
    border-bottom: 1px solid var(--border);
    padding: 18px 0;
    position: sticky;
    top: 0;
    background: rgba(15, 26, 46, 0.95);
    backdrop-filter: saturate(180%) blur(10px);
    -webkit-backdrop-filter: saturate(180%) blur(10px);
    z-index: 10;
}

header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.logo { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.logo-link { color: var(--text); display: flex; align-items: center; gap: 10px; }
.logo-link:hover { text-decoration: none; }
.logo-mark { color: var(--accent); font-size: 20px; }
.logo-text { font-size: 16px; letter-spacing: -0.01em; }

nav { display: flex; gap: 20px; }
nav a {
    color: var(--text-dim);
    font-size: 14px;
}
nav a:hover { color: var(--text); text-decoration: none; }
nav a[aria-current="page"] { color: var(--accent); }

main { padding: 80px 0 120px; }

.hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    line-height: 1.08;
    letter-spacing: -0.02em;
    margin: 0 0 28px;
    max-width: 720px;
}

.lede {
    font-size: 1.15rem;
    color: var(--text-dim);
    max-width: 640px;
    margin: 0 0 24px;
}

.disclaimer {
    color: var(--text-dim);
    font-size: 0.85rem;
    margin: 28px 0 0;
    padding: 12px 16px;
    background: var(--accent-soft);
    border-left: 3px solid var(--accent);
    border-radius: 4px;
    max-width: 640px;
}

.features {
    padding: 70px 0 20px;
}

.features .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}

.feature {
    background: var(--bg-elev);
    padding: 22px;
    border-radius: 10px;
    border: 1px solid var(--border);
}

.feature h2 {
    margin: 0 0 8px;
    font-size: 1.05rem;
    color: var(--accent);
    letter-spacing: 0;
}

.feature p {
    margin: 0;
    color: var(--text-dim);
    font-size: 0.95rem;
    line-height: 1.5;
}

.cta {
    margin-top: 70px;
    text-align: center;
}

.cta h2 {
    font-size: 1.6rem;
    margin: 0 0 10px;
    letter-spacing: -0.01em;
}

.cta p {
    color: var(--text-dim);
    margin: 0;
}

.document h1 {
    font-size: 2rem;
    margin: 0 0 8px;
    letter-spacing: -0.01em;
}

.document .meta {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin: 0 0 32px;
}

.document h2 {
    margin: 32px 0 10px;
    font-size: 1.25rem;
    color: var(--accent);
    letter-spacing: -0.005em;
}

.document h3 {
    margin: 22px 0 6px;
    font-size: 1.05rem;
}

.document p, .document ul {
    color: var(--text-dim);
    font-size: 1rem;
    line-height: 1.6;
}

.document ul {
    padding-left: 22px;
}

.document li { margin-bottom: 6px; }

.document strong { color: var(--text); font-weight: 600; }

.document code {
    background: var(--bg-elev);
    color: var(--text);
    padding: 1px 6px;
    border-radius: 4px;
    font-family: "SF Mono", ui-monospace, Menlo, monospace;
    font-size: 0.92em;
}

footer {
    border-top: 1px solid var(--border);
    padding: 28px 0;
    color: var(--text-dim);
    font-size: 0.85rem;
}

footer .container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

footer a { color: var(--text-dim); }
footer a:hover { color: var(--text); }

@media (max-width: 640px) {
    main { padding: 50px 0 80px; }
    .features { padding: 50px 0 10px; }
    nav a { font-size: 13px; }
}