:root {
    --bg: #ffffff;
    --text: #111827;
    --muted: #6b7280;
    --border: #e5e7eb;
    --accent: #111827;
    --accent-soft: #f3f4f6;
    --max-width: 1120px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
}

.page {
    max-width: var(--max-width);
    margin: 40px auto 56px;
    padding: 0 16px;
}

/* Header */

.page-header {
    margin-bottom: 32px;
}

.page-title {
    margin: 0;
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.page-subtitle {
    margin: 4px 0 12px;
    font-size: 0.95rem;
    color: var(--muted);
}

.page-lead {
    margin: 0 0 16px;
    font-size: 0.96rem;
}

.page-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 12px;
    font-size: 0.86rem;
    color: var(--muted);
    margin-bottom: 18px;
}

.meta-link {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid rgba(17, 24, 39, 0.25);
}

.meta-link:hover,
.meta-link:focus-visible {
    border-bottom-color: rgba(17, 24, 39, 0.6);
}

/* Nav */

.page-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 10px;
    font-size: 0.84rem;
    border-top: 1px solid var(--border);
    padding-top: 10px;
}

.page-nav a {
    padding: 2px 8px;
    border-radius: 999px;
    color: var(--muted);
    text-decoration: none;
    border: 1px solid transparent;
}

.page-nav a:hover,
.page-nav a:focus-visible,
.page-nav a.is-active {
    color: var(--accent);
    border-color: var(--border);
    background-color: var(--accent-soft);
}

/* Content */

.content {
    font-size: 0.95rem;
    max-width: 820px;
    margin: 0 auto;
}

/* Sections */

.section {
    margin-bottom: 24px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

.section h2 {
    margin: 0 0 10px;
    font-size: 1.1rem;
    font-weight: 600;
}

.section h3 {
    margin: 6px 0 6px;
    font-size: 0.96rem;
    font-weight: 500;
}

.section p {
    margin: 0 0 6px;
}

.section ul {
    margin: 0 0 4px 1.1rem;
    padding: 0;
}

.section li {
    margin-bottom: 4px;
}

/* Footer */

.page-footer {
    border-top: 1px solid var(--border);
    padding-top: 10px;
    padding-bottom: 10px;
    text-align: center;
    font-size: 0.8rem;
    color: var(--muted);
}

@media (max-width: 640px) {
    .page {
        margin-top: 24px;
    }

    .page-title {
        font-size: 1.7rem;
    }

    .page-lead {
        font-size: 0.94rem;
    }

    .page-meta {
        flex-direction: column;
        align-items: flex-start;
    }

    .content {
        max-width: 100%;
    }
}