:root {
    color-scheme: light;
    --bg: #f8fafc;
    --surface: #ffffff;
    --surface-muted: #f8fafc;
    --surface-strong: #eef2ff;
    --text: #0f172a;
    --text-soft: #1e293b;
    --muted: #64748b;
    --border: #e2e8f0;
    --border-strong: #cbd5e1;
    --primary: #2563eb;
    --primary-soft: rgba(37, 99, 235, 0.12);
    --accent: #0f766e;
    --accent-soft: rgba(15, 118, 110, 0.12);
    --warning-bg: #fff7ed;
    --warning-border: #fb923c;
    --code-bg: #f1f5f9;
    --code-header-bg: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.08);
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --navbar-height: 68px;
}

[data-theme="dark"] {
    color-scheme: dark;
    --bg: #020617;
    --surface: #0f172a;
    --surface-muted: #111c31;
    --surface-strong: #132238;
    --text: #e5e7eb;
    --text-soft: #cbd5e1;
    --muted: #94a3b8;
    --border: #1e293b;
    --border-strong: #334155;
    --primary: #38bdf8;
    --primary-soft: rgba(56, 189, 248, 0.14);
    --accent: #2dd4bf;
    --accent-soft: rgba(45, 212, 191, 0.14);
    --warning-bg: rgba(251, 146, 60, 0.12);
    --warning-border: #fb923c;
    --code-bg: #111827;
    --code-header-bg: #1e293b;
    --shadow-sm: 0 1px 2px rgba(2, 6, 23, 0.5);
    --shadow-md: 0 10px 30px rgba(2, 6, 23, 0.45);
    --shadow-lg: 0 24px 60px rgba(2, 6, 23, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.7;
    background:
        radial-gradient(circle at top, var(--primary-soft), transparent 30%),
        linear-gradient(180deg, color-mix(in srgb, var(--bg) 92%, var(--surface) 8%) 0%, var(--bg) 100%);
    color: var(--text);
}

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

a:hover {
    text-decoration: underline;
}

img,
svg {
    display: block;
    max-width: 100%;
}

button,
input,
textarea,
select {
    font: inherit;
}

code,
pre {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

pre,
code {
    font-size: 0.92rem;
}

table {
    border-collapse: collapse;
}

.skip-link {
    position: absolute;
    left: 16px;
    top: -48px;
    z-index: 1000;
    padding: 10px 14px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-md);
}

.skip-link:focus {
    top: 16px;
}

.doc-page,
.home-page {
    min-height: 100vh;
}

.shell {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 20px 48px;
}

.site-navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--navbar-height);
    border-bottom: 1px solid color-mix(in srgb, var(--border) 90%, transparent);
    background: color-mix(in srgb, var(--surface) 85%, transparent);
    backdrop-filter: blur(18px);
}

.site-navbar-inner {
    max-width: 1440px;
    height: 100%;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 18px;
}

.brand {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
    color: inherit;
    text-decoration: none;
}

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

.brand-title {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}

.brand-subtitle {
    font-size: 0.78rem;
    color: var(--muted);
    line-height: 1.2;
}

.navbar-spacer {
    flex: 1;
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.navbar-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 38px;
    padding: 0 12px;
    border-radius: 10px;
    color: var(--muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.navbar-link:hover {
    background: var(--surface-muted);
    color: var(--text);
    text-decoration: none;
}

.navbar-link.is-active {
    background: var(--primary-soft);
    color: var(--primary);
}

.navbar-link.github-link {
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-soft);
}

.navbar-link.github-link:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    color: var(--text-soft);
    cursor: pointer;
    transition: border-color 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}

.icon-button:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.icon-button:focus-visible,
.navbar-link:focus-visible,
.mobile-nav-link:focus-visible,
.sidebar-link:focus-visible,
.toc-link:focus-visible,
.copy-button:focus-visible,
.search-input:focus-visible,
.button:focus-visible,
.footer-link:focus-visible,
.prev-next-card:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.desktop-only {
    display: inline-flex;
}

.mobile-only {
    display: none;
}

.page-main {
    padding-top: 28px;
}

.layout-grid {
    display: grid;
    grid-template-columns: 250px minmax(0, 860px) 220px;
    gap: 28px;
    align-items: start;
}

.sidebar,
.page-toc,
.page-panel,
.hero-panel,
.feature-card,
.note-card,
.method-card,
.summary-card,
.table-card,
.prev-next-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.sidebar,
.page-toc {
    position: sticky;
    top: calc(var(--navbar-height) + 16px);
    max-height: calc(100vh - var(--navbar-height) - 32px);
    overflow: auto;
}

.sidebar {
    padding: 18px 14px;
}

.sidebar-group + .sidebar-group {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
}

.sidebar-group-title {
    margin: 0 0 8px;
    padding: 0 10px;
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.sidebar-link,
.sidebar-sub-link,
.toc-link,
.mobile-nav-link {
    display: block;
    padding: 8px 10px;
    border-radius: 10px;
    color: var(--text-soft);
    text-decoration: none;
    transition: background-color 0.18s ease, color 0.18s ease;
}

.sidebar-link:hover,
.sidebar-sub-link:hover,
.toc-link:hover,
.mobile-nav-link:hover {
    background: var(--surface-muted);
    color: var(--text);
    text-decoration: none;
}

.sidebar-link.is-active,
.sidebar-sub-link.is-active,
.toc-link.is-active,
.mobile-nav-link.is-active {
    background: var(--primary-soft);
    color: var(--primary);
}

.sidebar-sub-links {
    margin-top: 4px;
    padding-left: 14px;
    border-left: 1px solid var(--border);
}

.sidebar-sub-link {
    font-size: 0.93rem;
    color: var(--muted);
}

.page-toc {
    padding: 18px 16px 20px;
}

.page-toc-title {
    margin: 0 0 12px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text);
}

.toc-list {
    margin: 0;
    padding: 0;
    list-style: none;
    border-left: 1px solid var(--border);
}

.toc-link {
    margin-left: 12px;
    padding-left: 12px;
    font-size: 0.92rem;
    color: var(--muted);
}

.page-panel {
    padding: 32px;
}

.page-header {
    margin-bottom: 28px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.page-title {
    margin: 0;
    color: var(--text);
    font-size: clamp(2.4rem, 5vw, 3rem);
    line-height: 1.08;
    letter-spacing: -0.04em;
}

.page-summary {
    max-width: 70ch;
    margin: 14px 0 0;
    color: var(--muted);
    font-size: 1.04rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
    gap: 28px;
    align-items: stretch;
}

.hero-panel {
    padding: 32px;
    box-shadow: var(--shadow-md);
}

.hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero-title {
    margin: 18px 0 10px;
    font-size: clamp(2.6rem, 5vw, 3.4rem);
    line-height: 1.02;
    letter-spacing: -0.05em;
}

.hero-description {
    margin: 0;
    max-width: 60ch;
    color: var(--muted);
    font-size: 1.05rem;
}

.pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 22px 0 26px;
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--surface-muted);
    border: 1px solid var(--border);
    color: var(--text-soft);
    font-size: 0.86rem;
    font-weight: 600;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 0 16px;
    border-radius: 12px;
    border: 1px solid transparent;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.button:hover {
    transform: translateY(-1px);
    text-decoration: none;
}

.button-primary {
    background: var(--primary);
    color: #fff;
}

.button-primary:hover {
    background: color-mix(in srgb, var(--primary) 88%, black 12%);
}

.button-secondary {
    border-color: var(--border);
    background: var(--surface);
    color: var(--text);
}

.button-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.code-preview-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.quick-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 18px;
}

.quick-stat {
    padding: 14px;
    border-radius: var(--radius-md);
    background: var(--surface-muted);
    border: 1px solid var(--border);
}

.quick-stat-label {
    margin: 0 0 4px;
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 600;
}

.quick-stat-value {
    margin: 0;
    color: var(--text);
    font-size: 1rem;
    font-weight: 700;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.feature-card,
.summary-card,
.note-card {
    padding: 22px;
}

.feature-card h2,
.feature-card h3,
.summary-card h3,
.note-card h2,
.page-panel h2,
.page-panel h3,
.page-panel h4,
.method-card h3 {
    color: var(--text);
}

.feature-card h2,
.feature-card h3,
.note-card h2,
.summary-card h3 {
    margin: 0 0 10px;
    line-height: 1.2;
}

.feature-card p,
.summary-card p,
.note-card p,
.page-panel p,
.page-panel li,
.method-card p,
.method-card li,
.method-card td,
.method-card th {
    color: var(--muted);
}

.feature-card h3 {
    font-size: 1.08rem;
}

.section-stack > * + * {
    margin-top: 24px;
}

.section-block + .section-block {
    margin-top: 32px;
}

.section-heading {
    margin: 0 0 8px;
    font-size: clamp(1.55rem, 3vw, 1.95rem);
    line-height: 1.18;
    letter-spacing: -0.03em;
}

.section-description {
    margin: 0 0 18px;
    color: var(--muted);
}

.note-card {
    border-left: 4px solid var(--warning-border);
    background: var(--warning-bg);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.table-card {
    overflow: hidden;
}

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

.doc-table {
    width: 100%;
    min-width: 480px;
}

.doc-table th,
.doc-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.doc-table th {
    background: var(--surface-muted);
    color: var(--text);
    font-size: 0.92rem;
    font-weight: 700;
}

.doc-table tr:last-child td {
    border-bottom: 0;
}

.list-tight {
    margin: 0;
    padding-left: 20px;
}

.code-block {
    margin: 16px 0 20px;
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    background: var(--code-bg);
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    background: var(--code-header-bg);
}

.code-language {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.copy-button {
    position: static;
    flex-shrink: 0;
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    background: var(--surface);
    color: var(--text);
}

.copy-button:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.code-block pre {
    margin: 0;
    padding: 16px 18px;
    overflow-x: auto;
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--text-soft);
    background: transparent;
}

.code-block code {
    white-space: pre;
}

.content-inline-code,
.page-panel code:not(pre code),
.method-card code:not(pre code),
.doc-table code,
.pill code {
    padding: 0.15rem 0.4rem;
    border-radius: 8px;
    background: var(--surface-muted);
    border: 1px solid var(--border);
    color: var(--text-soft);
}

.api-search {
    margin: 18px 0 24px;
}

.search-input {
    width: 100%;
    min-height: 48px;
    padding: 0 16px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface);
    color: var(--text);
    box-shadow: var(--shadow-sm);
}

.search-input::placeholder {
    color: var(--muted);
}

.search-empty {
    display: none;
    padding: 18px;
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-md);
    color: var(--muted);
    background: var(--surface-muted);
}

.search-empty.is-visible {
    display: block;
}

.method-card {
    padding: 24px 26px;
    margin-bottom: 24px;
}

.method-card-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.method-card h3 {
    margin: 0;
    font-size: 1.22rem;
    line-height: 1.25;
}

.method-meta {
    display: grid;
    gap: 18px;
}

.meta-section h4 {
    margin: 0 0 8px;
    font-size: 0.98rem;
    color: var(--text);
}

.meta-section p,
.meta-section ul {
    margin: 0;
}

.meta-section ul {
    padding-left: 18px;
}

.see-also-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.see-also-link {
    display: inline-flex;
    align-items: center;
    padding: 7px 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--text-soft);
    background: var(--surface-muted);
    font-size: 0.88rem;
    text-decoration: none;
}

.see-also-link:hover {
    border-color: var(--primary);
    color: var(--primary);
    text-decoration: none;
}

.prev-next {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 36px;
}

.prev-next-card {
    display: block;
    padding: 18px 20px;
    color: inherit;
    text-decoration: none;
    transition: border-color 0.18s ease, transform 0.18s ease;
}

.prev-next-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
    text-decoration: none;
}

.prev-next-label {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.prev-next-title {
    display: block;
    color: var(--text);
    font-weight: 700;
}

.site-footer {
    margin-top: 28px;
    padding: 26px 0 8px;
}

.site-footer-card {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) repeat(2, minmax(180px, 1fr));
    gap: 24px;
    padding: 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.footer-title {
    margin: 0 0 6px;
    color: var(--text);
    font-size: 1rem;
    font-weight: 700;
}

.footer-text,
.footer-note,
.footer-list a {
    color: var(--muted);
}

.footer-text,
.footer-note {
    margin: 0;
}

.footer-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.footer-list li + li {
    margin-top: 8px;
}

.footer-link {
    color: var(--text-soft);
}

.mobile-sidebar {
    display: none;
    margin: 16px 0 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}

.mobile-sidebar.is-open {
    display: block;
}

.mobile-sidebar-inner {
    padding: 14px;
}

.mobile-sidebar-title {
    margin: 0 0 12px;
    font-size: 0.95rem;
    color: var(--text);
    font-weight: 700;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 1180px) {
    .layout-grid {
        grid-template-columns: 240px minmax(0, 1fr);
    }

    .page-toc {
        display: none;
    }
}

@media (max-width: 1024px) {
    .features-grid,
    .summary-grid,
    .prev-next,
    .site-footer-card,
    .hero-grid {
        grid-template-columns: 1fr;
    }

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

    .sidebar {
        display: none;
    }

    .mobile-only {
        display: inline-flex;
    }

    .desktop-only {
        display: none;
    }
}

@media (max-width: 767px) {
    .shell,
    .site-navbar-inner {
        padding-left: 16px;
        padding-right: 16px;
    }

    .page-main {
        padding-top: 20px;
    }

    .page-panel,
    .hero-panel,
    .feature-card,
    .summary-card,
    .note-card,
    .method-card {
        padding: 22px 18px;
    }

    .hero-title,
    .page-title {
        font-size: clamp(2rem, 8vw, 2.7rem);
    }

    .navbar-links {
        display: none;
    }

    .site-navbar-inner {
        gap: 12px;
    }

    .brand-title {
        font-size: 0.98rem;
    }

    .brand-subtitle {
        font-size: 0.74rem;
    }

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

    .doc-table {
        min-width: 420px;
    }

    .method-card-title-row {
        align-items: flex-start;
    }
}

@media (max-width: 520px) {
    .hero-actions,
    .pill-row,
    .see-also-list {
        gap: 8px;
    }

    .button {
        width: 100%;
    }
}