:root {
    color-scheme: light dark;
    --bg: #ffffff;
    --bg-soft: #f5f5f7;
    --fg: #1d1d1f;
    --fg-muted: #6e6e73;
    --accent: #5e3eb8;
    --border: #d2d2d7;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f0f12;
        --bg-soft: #1a1a1f;
        --fg: #f5f5f7;
        --fg-muted: #98989d;
        --accent: #a48dff;
        --border: #2c2c30;
    }
}

* {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.65;
}

.container {
    max-width: 760px;
    margin: 0 auto;
    padding: 2.5rem 1.25rem 4rem;
}

header {
    border-bottom: 1px solid var(--border);
    padding-bottom: 1.5rem;
    margin-bottom: 2rem;
}

header .breadcrumb {
    color: var(--fg-muted);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

header .breadcrumb a {
    color: var(--fg-muted);
}

h1 {
    font-size: 2rem;
    margin: 0 0 0.5rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

h2 {
    font-size: 1.375rem;
    margin: 2.5rem 0 0.75rem;
    font-weight: 600;
    letter-spacing: -0.005em;
}

h3 {
    font-size: 1.0625rem;
    margin: 1.75rem 0 0.5rem;
    font-weight: 600;
}

p, li {
    margin: 0.6rem 0;
}

ul, ol {
    padding-left: 1.5rem;
}

a {
    color: var(--accent);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}

a:hover {
    text-decoration-thickness: 2px;
}

code {
    background: var(--bg-soft);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: "SF Mono", "Menlo", "Consolas", monospace;
}

table {
    border-collapse: collapse;
    margin: 1rem 0;
    width: 100%;
    font-size: 0.95rem;
}

th, td {
    text-align: left;
    padding: 0.625rem 0.75rem;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

th {
    background: var(--bg-soft);
    font-weight: 600;
}

.note {
    background: var(--bg-soft);
    border-left: 3px solid var(--accent);
    padding: 0.875rem 1rem;
    margin: 1.25rem 0;
    border-radius: 0 6px 6px 0;
    font-size: 0.95rem;
}

.meta {
    color: var(--fg-muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

footer {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    color: var(--fg-muted);
    font-size: 0.875rem;
}

.card-list {
    display: grid;
    gap: 0.75rem;
    list-style: none;
    padding: 0;
    margin: 1.5rem 0 0;
}

.card-list li {
    margin: 0;
}

.card-list a {
    display: block;
    padding: 1rem 1.25rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    text-decoration: none;
    color: var(--fg);
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.card-list a:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
}

.card-list .card-title {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.card-list .card-desc {
    color: var(--fg-muted);
    font-size: 0.9375rem;
    margin: 0;
}