:root {
    color-scheme: dark light;
    --bg: #06071a;
    --panel: #0d1030;
    --line: rgba(255, 255, 255, 0.08);
    --fg: #e9ebff;
    --muted: #a6abd2;
    --accent: #8b7bff;
    --accent-2: #38d6ff;
    --code-bg: #0a0c24;
    --warn: #ffd166;
    --font: Inter, "Segoe UI", system-ui, -apple-system, sans-serif;
    --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: #f6f7fc;
        --panel: #ffffff;
        --line: rgba(10, 12, 60, 0.1);
        --fg: #141633;
        --muted: #5b6080;
        --accent: #5b47e6;
        --accent-2: #0b8ec4;
        --code-bg: #eef0fa;
        --warn: #9a6a00;
    }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font: 16px/1.65 var(--font);
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.skip {
    position: absolute;
    left: -999px;
    top: 0;
    background: var(--accent);
    color: #fff;
    padding: 8px 12px;
}
.skip:focus { left: 8px; z-index: 10; }

.masthead {
    border-bottom: 1px solid var(--line);
    background: linear-gradient(135deg, rgba(139, 123, 255, 0.18), rgba(56, 214, 255, 0.08));
}
.masthead-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--fg);
    font-weight: 700;
    letter-spacing: 0.12em;
    font-size: 18px;
}
.brand:hover { text-decoration: none; }
.mark {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.meta { margin: 0; color: var(--muted); font-size: 14px; }

.shell {
    max-width: 1180px;
    margin: 0 auto;
    padding: 24px;
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 32px;
}

.sidebar ul { list-style: none; margin: 0; padding: 0; position: sticky; top: 16px; }
.sidebar li + li { margin-top: 2px; }
.sidebar a {
    display: block;
    padding: 7px 10px;
    border-radius: 8px;
    color: var(--muted);
    font-size: 14.5px;
}
.sidebar a:hover { background: var(--panel); color: var(--fg); text-decoration: none; }

.content { min-width: 0; }
.content h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; }
.content h2 { font-size: 22px; margin: 36px 0 10px; padding-top: 8px; border-top: 1px solid var(--line); }
.content h3 { font-size: 17px; margin: 24px 0 6px; }
.content p, .content ul, .content ol { margin: 0 0 14px; }
.content li + li { margin-top: 4px; }
.lead { color: var(--muted); font-size: 17px; }

code, pre {
    font-family: var(--mono);
    font-size: 13.5px;
}
code {
    background: var(--code-bg);
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 1px 6px;
}
pre {
    background: var(--code-bg);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 14px 16px;
    overflow: auto;
    margin: 0 0 16px;
}
pre code { background: none; border: 0; padding: 0; }
pre.licences { max-height: 60vh; white-space: pre-wrap; font-size: 12.5px; }

table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0 16px;
    font-size: 14.5px;
}
th, td {
    text-align: left;
    vertical-align: top;
    padding: 8px 10px;
    border-bottom: 1px solid var(--line);
}
th { color: var(--muted); font-weight: 600; }

.note, .warning {
    border-left: 3px solid var(--accent);
    background: var(--panel);
    border-radius: 0 10px 10px 0;
    padding: 12px 16px;
    margin: 0 0 16px;
}
.warning { border-left-color: var(--warn); }

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 12px;
    margin: 0 0 16px;
    padding: 0;
    list-style: none;
}
.cards li {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 14px 16px;
    margin: 0;
}
.cards strong { display: block; margin-bottom: 4px; }
.cards span { color: var(--muted); font-size: 14px; }

.colophon {
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 13px;
    text-align: center;
    padding: 20px 24px 90px;
}

.to-top {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
    font-size: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}
.to-top:hover { text-decoration: none; filter: brightness(1.1); }

@media (max-width: 860px) {
    .shell { grid-template-columns: 1fr; gap: 20px; padding: 16px; }
    .sidebar ul { position: static; display: flex; flex-wrap: wrap; gap: 4px; }
    .sidebar li + li { margin-top: 0; }
    .content h1 { font-size: 26px; }
}

@media print {
    .sidebar, .to-top, .skip { display: none; }
    .shell { display: block; }
}