:root {
    --bg-page: #f0f2f5;
    --bg-panel: #ffffff;
    --bg-muted: #f7faf9;
    --bg-banner: #00a884;
    --bg-banner-dark: #008069;
    --text-main: #111b21;
    --text-soft: #667781;
    --accent: #00a884;
    --accent-soft: #dff5ef;
    --danger: #c2473b;
    --border: #d7e0dd;
    --shadow: 0 12px 30px rgba(17, 27, 33, 0.08);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.65;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--text-main);
    background:
        radial-gradient(circle at top right, rgba(0, 168, 132, 0.08) 0%, transparent 32%),
        linear-gradient(180deg, #f8fbfa 0%, var(--bg-page) 100%);
}

a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

a:hover {
    color: var(--bg-banner-dark);
}

.site-footer {
    max-width: 1300px;
    margin: 0 auto;
    padding: 12px 24px 24px;
    color: var(--text-soft);
    font-size: 0.92rem;
}

.content {
    max-width: 1300px;
    margin: 0 auto;
    padding: 28px 20px 42px;
}

.doc-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}

.doc-sidebar {
    position: sticky;
    top: 20px;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px;
    box-shadow: var(--shadow);
}

.doc-sidebar__group + .doc-sidebar__group {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.doc-sidebar__group-title {
    margin: 0 0 6px;
    color: var(--text-soft);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.72rem;
    font-weight: 700;
}

.doc-sidebar nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.doc-sidebar a {
    border-radius: 8px;
    padding: 6px 9px;
    text-decoration: none;
    color: #255048;
}

.doc-sidebar a:hover {
    background: var(--accent-soft);
}

.doc-sidebar a[aria-current="page"] {
    background: var(--accent);
    color: #ffffff;
}

.doc-main {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow);
    padding: 28px;
}

.lead h1 {
    margin: 0 0 12px;
    font-size: 2.1rem;
    line-height: 1.15;
    color: #0f3028;
}

.lead p {
    margin: 10px 0;
    color: var(--text-main);
    max-width: 72ch;
}

section + section {
    margin-top: 34px;
}

h2 {
    margin: 0 0 12px;
    color: #143c33;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
    font-size: 1.35rem;
}

h3 {
    margin: 20px 0 8px;
    color: #18574a;
    font-size: 1.08rem;
}

p,
li {
    color: var(--text-main);
}

ul,
ol {
    padding-left: 20px;
}

pre {
    margin: 14px 0;
    background: #11231f;
    color: #e6f6f2;
    border-radius: 10px;
    padding: 14px;
    overflow-x: auto;
    font-size: 0.92rem;
}

code {
    font-family: "SFMono-Regular", "Menlo", "Monaco", "Consolas", monospace;
}

p code,
li code,
td code,
th code {
    background: #edf7f4;
    color: #125244;
    border-radius: 4px;
    padding: 1px 5px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 12px 0;
}

th,
td {
    border: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
    padding: 10px;
}

th {
    background: #eef8f5;
    color: #143c33;
}

.highlight-box {
    border: 1px solid #cbe6de;
    background: linear-gradient(140deg, #fbfefd 0%, #f2fbf8 100%);
    border-radius: 12px;
    padding: 16px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.grid article {
    border: 1px solid var(--border);
    background: var(--bg-muted);
    border-radius: 12px;
    padding: 14px;
}

.doc-callout {
    margin: 16px 0;
    border-left: 4px solid var(--accent);
    background: #f1fbf7;
    border-radius: 10px;
    padding: 12px 14px;
}

.doc-callout--important {
    border-left-color: var(--danger);
    background: #fdf1ef;
}

.doc-callout p {
    margin: 0;
}

.table-wrap {
    overflow-x: auto;
}

.spec-id {
    font-family: "SFMono-Regular", "Menlo", "Monaco", "Consolas", monospace;
    background: #e6f6f1;
    padding: 1px 6px;
    border-radius: 999px;
    color: #125244;
    font-size: 0.88rem;
}

.error {
    border: 1px solid #efb6b1;
    background: #fff0ef;
    color: #7d221c;
    border-radius: 10px;
    padding: 12px;
}

.loading {
    text-align: center;
    color: var(--text-soft);
    padding: 24px 8px;
}

@media (max-width: 940px) {
    .doc-layout {
        grid-template-columns: 1fr;
    }

    .doc-sidebar {
        position: static;
    }

    .doc-main {
        padding: 20px;
    }

    .grid {
        grid-template-columns: 1fr;
    }
}