:root {
    color-scheme: light dark;
    --bg: #ffffff;
    --panel: #f7f8fa;
    --text: #24262d;
    --muted: #61656f;
    --line: #e3e5ea;
    --accent: #4a54d6;
    --code-bg: #f4f5f8;
    --shadow: 0 1px 2px rgba(20, 22, 30, 0.05);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #16171d;
        --panel: #1c1e26;
        --text: #e6e8f0;
        --muted: #9aa0b0;
        --line: #2b2e39;
        --accent: #8b95ff;
        --code-bg: #1c1e26;
        --shadow: none;
    }
}

* {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    overflow-wrap: break-word;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    text-decoration: underline;
}

.nav {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 0 24px;
    height: 58px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
}

.brand {
    display: flex;
    align-items: center;
    gap: 9px;
    font-weight: 700;
    font-size: 17px;
    color: var(--text);
}

.brand:hover {
    text-decoration: none;
}

.nav nav {
    display: flex;
    align-items: center;
    gap: 22px;
    font-size: 14px;
    font-weight: 500;
}

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

.nav nav a.active {
    color: var(--accent);
}

.shell {
    display: grid;
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 48px;
    max-width: 1120px;
    margin: 0 auto;
    padding: 32px 24px 64px;
}

.shell.wide {
    grid-template-columns: minmax(0, 1fr);
    max-width: 860px;
}

.sidebar {
    position: sticky;
    top: 90px;
    align-self: start;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.group-title {
    margin: 0 0 10px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
}

.sidebar .items {
    display: flex;
    flex-direction: column;
}

.sidebar a {
    display: block;
    padding: 6px 0;
    font-size: 14px;
    color: var(--muted);
}

.sidebar a.active {
    color: var(--accent);
    font-weight: 600;
}

.content {
    min-width: 0;
}

.content h1,
.content h2,
.content h3 {
    line-height: 1.3;
    scroll-margin-top: 80px;
}

.content h1 {
    margin: 0 0 24px;
    font-size: 34px;
    letter-spacing: -0.02em;
}

.content h2 {
    margin: 48px 0 16px;
    padding-top: 18px;
    border-top: 1px solid var(--line);
    font-size: 23px;
    letter-spacing: -0.01em;
}

.content h3 {
    margin: 32px 0 12px;
    font-size: 18px;
}

.content p,
.content ul,
.content ol {
    margin: 0 0 16px;
}

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

.anchor {
    float: left;
    margin-left: -22px;
    padding-right: 8px;
    color: var(--line);
    opacity: 0;
    font-weight: 400;
}

h1:hover .anchor,
h2:hover .anchor,
h3:hover .anchor {
    opacity: 1;
}

code {
    padding: 2px 6px;
    border-radius: 5px;
    background: var(--code-bg);
    border: 1px solid var(--line);
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
    font-size: 0.87em;
}

pre.code {
    margin: 0 0 20px;
    padding: 16px 18px;
    overflow-x: auto;
    border-radius: 10px;
    background: var(--code-bg);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}

pre.code code {
    padding: 0;
    border: 0;
    background: none;
    font-size: 13.5px;
    line-height: 1.65;
}

table {
    width: 100%;
    margin: 0 0 20px;
    border-collapse: collapse;
    font-size: 14.5px;
    display: block;
    overflow-x: auto;
}

th,
td {
    padding: 9px 14px;
    border: 1px solid var(--line);
    text-align: left;
}

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

blockquote {
    margin: 0 0 20px;
    padding: 2px 18px;
    border-left: 3px solid var(--accent);
    color: var(--muted);
}

.callout {
    margin: 0 0 20px;
    padding: 14px 18px 2px;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: var(--panel);
    border-left: 3px solid var(--accent);
}

.callout.warning {
    border-left-color: #d99a24;
}

.callout.danger {
    border-left-color: #d4574f;
}

.callout p:first-child strong {
    color: var(--accent);
}

.callout.warning p:first-child strong {
    color: #d99a24;
}

.callout.danger p:first-child strong {
    color: #d4574f;
}

.home h1 {
    font-size: 46px;
}

.home > p:first-of-type {
    font-size: 19px;
    color: var(--muted);
}

.foot {
    max-width: 1120px;
    margin: 0 auto;
    padding: 28px 24px 56px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 13.5px;
}

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

.motto {
    font-style: italic;
}

@media (max-width: 900px) {
    .nav {
        gap: 14px;
        padding: 0 14px;
    }

    .nav nav {
        gap: 16px;
        overflow-x: auto;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
        padding: 4px 0;
        mask-image: linear-gradient(to right, #000 88%, transparent);
    }

    .nav nav::-webkit-scrollbar {
        display: none;
    }

    .nav nav a {
        flex: 0 0 auto;
        padding: 6px 0;
    }

    .shell {
        grid-template-columns: minmax(0, 1fr);
        gap: 0;
        padding: 20px 16px 48px;
    }

    .shell.wide {
        padding: 20px 16px 48px;
    }

    .sidebar {
        position: static;
        max-height: none;
        margin: 0 -16px 24px;
        padding: 0 16px 16px;
        border-bottom: 1px solid var(--line);
    }

    .sidebar .items {
        flex-direction: row;
        gap: 8px;
        overflow-x: auto;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 2px;
    }

    .sidebar .items::-webkit-scrollbar {
        display: none;
    }

    .sidebar a {
        flex: 0 0 auto;
        padding: 8px 14px;
        border: 1px solid var(--line);
        border-radius: 999px;
        background: var(--panel);
        white-space: nowrap;
    }

    .sidebar a.active {
        border-color: var(--accent);
    }

    .content h1 {
        font-size: 28px;
        margin-bottom: 18px;
    }

    .content h2 {
        font-size: 20px;
        margin-top: 38px;
    }

    .content h3 {
        font-size: 17px;
    }

    .home h1 {
        font-size: 32px;
    }

    .home > p:first-of-type {
        font-size: 17px;
    }

    .anchor {
        display: none;
    }

    pre.code {
        margin-left: -16px;
        margin-right: -16px;
        border-radius: 0;
        border-left: 0;
        border-right: 0;
        padding: 14px 16px;
    }

    pre.code code {
        font-size: 12.5px;
    }

    table {
        font-size: 13.5px;
    }

    th,
    td {
        padding: 8px 11px;
    }

    .callout {
        margin-left: -4px;
        margin-right: -4px;
    }

    .foot {
        padding: 24px 16px 44px;
    }
}

@media (max-width: 380px) {
    .brand span {
        display: none;
    }

    .content h1 {
        font-size: 25px;
    }

    .home h1 {
        font-size: 28px;
    }
}

.hljs-keyword,
.hljs-literal,
.hljs-built_in {
    color: #b565c9;
}

.hljs-string {
    color: #4c9a5a;
}

.hljs-number {
    color: #c07830;
}

.hljs-comment {
    color: var(--muted);
    font-style: italic;
}

.hljs-title,
.hljs-function .hljs-title,
.hljs-attr {
    color: #3f7fd0;
}

@media (prefers-color-scheme: dark) {
    .hljs-keyword,
    .hljs-literal,
    .hljs-built_in {
        color: #d8a0e8;
    }

    .hljs-string {
        color: #8fd49b;
    }

    .hljs-number {
        color: #e0a76a;
    }

    .hljs-title,
    .hljs-function .hljs-title,
    .hljs-attr {
        color: #8ab6f0;
    }
}

.badge {
    display: inline-block;
    margin-left: 8px;
    padding: 2px 8px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--panel);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    vertical-align: middle;
}

.badge.danger {
    color: #d4574f;
    border-color: #d4574f;
    background: transparent;
}

.badge.warning {
    color: #d99a24;
    border-color: #d99a24;
    background: transparent;
}