:root {
    color-scheme: light dark;
    --bg: #f5f1e8;
    --surface: #fbf8f2;
    --surface-strong: #efe8db;
    --text: #111111;
    --muted: rgba(17, 17, 17, 0.68);
    --border: rgba(17, 17, 17, 0.12);
    --border-strong: rgba(17, 17, 17, 0.32);
    --shadow: 0 18px 40px rgba(17, 17, 17, 0.06);
    --success: #29a36a;
    --transition-base: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg: #050505;
    --surface: #0c0c0c;
    --surface-strong: #111111;
    --text: #f5f5f5;
    --muted: rgba(245, 245, 245, 0.72);
    --border: rgba(245, 245, 245, 0.12);
    --border-strong: rgba(245, 245, 245, 0.28);
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
}

* {
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

html,
body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family:
        "Aptos",
        "SF Pro Display",
        "Segoe UI",
        "Helvetica Neue",
        sans-serif;
    line-height: 1.6;
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
}

a {
    color: inherit;
}

code,
pre {
    font-family:
        "JetBrains Mono",
        "IBM Plex Mono",
        "Cascadia Mono",
        monospace;
}

.layout,
.page-shell {
    width: min(1180px, 92vw);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(228px, 252px) minmax(0, 1fr);
    gap: 76px;
    padding-top: 28px;
    padding-bottom: 32px;
    align-items: start;
}

.rail,
.sidebar {
    position: sticky;
    top: 28px;
    align-self: start;
    display: flex;
    flex-direction: column;
    gap: 14px;
    height: calc(100vh - 56px);
    overflow: hidden;
    padding-bottom: 8px;
}

.rail-top,
.sidebar-top {
    display: grid;
    gap: 14px;
}

.rail-nav {
    position: relative;
    display: grid;
    gap: 6px;
    padding-right: 8px;
    min-height: 0;
    flex: 1 1 auto;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.rail-nav::-webkit-scrollbar {
    width: 7px;
}

.rail-nav::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 999px;
}

.rail-nav::-webkit-scrollbar-track {
    background: transparent;
}

.brandmark,
.brand-lockup {
    text-decoration: none;
    color: inherit;
    display: grid;
    gap: 8px;
}

.logo-mark {
    width: 50px;
    height: 50px;
    display: inline-block;
    transition: transform 0.24s ease-out;
}

.brandmark:hover .logo-mark,
.brand-lockup:hover .logo-mark {
    transform: rotate(90deg);
}

.word,
.brand-name {
    font-size: 1.16rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.kicker,
.tagline {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--muted);
}

.theme-switch {
    display: flex;
    gap: 2px;
    width: fit-content;
    padding: 2px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.theme-option {
    border: none;
    background: transparent;
    color: var(--text);
    width: 40px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    cursor: pointer;
    opacity: 0.46;
    transition: opacity var(--transition-base), background var(--transition-base), color var(--transition-base);
}

.theme-option svg {
    width: 16px;
    height: 16px;
}

.theme-option:hover {
    opacity: 0.9;
    background: var(--surface-strong);
}

.theme-option.is-active {
    opacity: 1;
    background: var(--text);
    color: var(--bg);
}

.rail-nav a {
    position: relative;
    display: flex;
    align-items: center;
    text-decoration: none;
    font-size: 12px;
    padding: 7px 12px;
    line-height: 1.35;
    border-radius: 12px;
    color: var(--muted);
    opacity: 1;
    transition: color var(--transition-base), background var(--transition-base), border-color var(--transition-base);
}

.rail-nav a:hover {
    color: var(--text);
    background: var(--surface);
}

.rail-nav a.is-active {
    color: var(--text);
    font-weight: 600;
    background: var(--surface);
    box-shadow: inset 0 0 0 1px var(--border);
}

.nav-indicator {
    display: none;
}

.rail-links,
.sidebar-footer {
    display: grid;
    gap: 8px;
    padding-top: 12px;
    margin-top: auto;
    border-top: 1px solid var(--border);
}

.rail-links a,
.sidebar-footer a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-size: 12px;
    color: var(--muted);
    transition: color var(--transition-base), opacity var(--transition-base);
}

.rail-links a:hover,
.sidebar-footer a:hover {
    color: var(--text);
}

.rail-links svg,
.sidebar-footer svg {
    width: 16px;
    height: 16px;
}

.page,
.content-column {
    min-width: 0;
    padding-bottom: 160px;
}

.panel-section {
    display: none;
    opacity: 0;
}

.panel-section.is-active {
    display: block;
    opacity: 1;
}

.panel-body {
    display: grid;
    gap: 22px;
}

.eyebrow {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--muted);
}

h1 {
    margin: 0;
    max-width: 12ch;
    font-size: clamp(2.05rem, 3.25vw, 3.2rem);
    line-height: 1;
    letter-spacing: -0.05em;
    font-weight: 760;
}

h2 {
    margin: 0;
    max-width: 14ch;
    font-size: clamp(1.95rem, 3vw, 2.6rem);
    line-height: 1.02;
    letter-spacing: -0.04em;
    font-weight: 720;
}

h3 {
    margin: 0;
    font-size: 0.94rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h4 {
    margin: 0;
    font-size: 1.02rem;
    letter-spacing: -0.02em;
}

p,
ul,
ol {
    margin: 0;
}

.lede,
.section-intro {
    max-width: 720px;
    color: var(--muted);
    font-size: 1.08rem;
}

.cta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 8px 0 6px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 12px 18px;
    border-radius: 12px;
    border: 1px solid var(--border);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    background: transparent;
    color: var(--text);
    transition: transform var(--transition-base), background var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

.btn:hover {
    transform: translateY(-1px);
}

.btn.primary {
    background: var(--text);
    color: var(--bg);
    border-color: var(--text);
}

.btn.external:hover {
    background: var(--surface);
    border-color: var(--border-strong);
}

.hero-stats,
.grid.two-up,
.grid,
.features,
.fact-list,
.quick,
.repo-grid {
    display: grid;
}

.hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.metric-card,
.fact-item,
.repo-card,
.command-card,
pre,
.benchmark-table-wrap {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: var(--shadow);
}

.metric-card,
.fact-item,
.repo-card {
    padding: 18px 20px;
}

.metric-card span,
.fact-item span,
.repo-card span,
.quick span {
    display: block;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 10px;
    font-weight: 700;
}

.metric-card strong,
.repo-card strong {
    display: block;
    font-size: 1.08rem;
    line-height: 1.32;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.metric-card p,
.fact-item p,
.repo-card p,
.feature-item p,
.muted,
.benchmark-meta,
.skill-prose p,
.skill-prose li {
    color: var(--muted);
}

.features {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 24px;
}

.feature-item {
    display: grid;
    gap: 8px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
}

.fact-list {
    gap: 14px;
}

.fact-list.compact {
    gap: 12px;
}

.grid {
    gap: 24px;
}

.grid.two-up {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.quick {
    gap: 14px;
}

.command-card,
pre {
    position: relative;
    padding: 20px 64px 20px 20px;
}

.command-card code,
pre code {
    display: block;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-wrap: anywhere;
    font-size: 0.93rem;
    line-height: 1.7;
}

.repo-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.repo-grid-three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.benchmark-table-wrap {
    overflow-x: auto;
    padding: 6px;
}

.benchmark-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.93rem;
}

.benchmark-table th,
.benchmark-table td {
    text-align: left;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.benchmark-table th {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--muted);
    font-weight: 700;
}

.benchmark-table td strong {
    display: block;
    margin-bottom: 4px;
}

.benchmark-table td span {
    color: var(--muted);
    font-size: 0.85rem;
}

.benchmark-table tbody tr:last-child td {
    border-bottom: none;
}

.inline-links {
    display: grid;
    gap: 10px;
    padding-left: 18px;
}

.inline-links li {
    color: var(--muted);
}

.inline-links a,
.skill-prose a,
.fact-item a,
.panel-footer a {
    text-decoration: none;
    border-bottom: 1px solid var(--border-strong);
}

.inline-links a:hover,
.skill-prose a:hover,
.fact-item a:hover,
.panel-footer a:hover {
    border-color: var(--text);
}

.copy-btn {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    padding: 7px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0.8;
    transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base), opacity var(--transition-base);
}

.copy-btn:hover {
    background: var(--text);
    color: var(--bg);
    border-color: var(--text);
    opacity: 1;
}

.copy-btn svg {
    width: 100%;
    height: 100%;
}

.copy-btn.copied {
    border-color: var(--success);
    color: var(--success);
}

.panel-footer {
    padding-top: 26px;
    margin-top: 10px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.92rem;
}

.panel-footer a {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.skill-source-card {
    border-top: 1px solid var(--border);
    padding-top: 18px;
}

.external {
    position: relative;
    padding-right: 14px;
}

.external::after {
    content: "";
    display: inline-block;
    width: 11px;
    height: 11px;
    margin-left: 4px;
    background-color: currentColor;
    opacity: 0;
    transform: translate(-3px, 3px);
    transition: all var(--transition-base);
    mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.3\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><line x1=\"7\" y1=\"17\" x2=\"17\" y2=\"7\"></line><polyline points=\"7 7 17 7 17 17\"></polyline></svg>') no-repeat center / contain;
    -webkit-mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.3\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><line x1=\"7\" y1=\"17\" x2=\"17\" y2=\"7\"></line><polyline points=\"7 7 17 7 17 17\"></polyline></svg>') no-repeat center / contain;
}

.external:hover::after {
    opacity: 1;
    transform: translate(0, 0);
}

.doc-article {
    display: grid;
    gap: 22px;
    max-width: 760px;
}

.skill-prose {
    display: grid;
    gap: 18px;
}

.skill-prose h2 {
    margin-top: 18px;
    max-width: none;
    font-size: 1.85rem;
}

.skill-prose h3 {
    margin-top: 10px;
    text-transform: none;
    letter-spacing: -0.02em;
    font-size: 1.1rem;
}

.skill-prose ul,
.skill-prose ol {
    padding-left: 22px;
}

.skill-prose pre {
    margin: 0;
}

.redirect-shell {
    width: min(720px, 92vw);
    margin: 72px auto;
    font-size: 14px;
}

@media (max-width: 1080px) {
    .layout,
    .page-shell {
        grid-template-columns: minmax(210px, 240px) minmax(0, 1fr);
        gap: 52px;
    }

    .repo-grid-three {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .layout,
    .page-shell {
        grid-template-columns: 1fr;
        gap: 32px;
        padding-top: 28px;
    }

    .rail,
    .sidebar {
        position: static;
        height: auto;
        overflow: visible;
        padding-bottom: 20px;
        border-bottom: 1px solid var(--border);
    }

    .rail-top,
    .sidebar-top {
        gap: 24px;
    }

    .rail-nav {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px 16px;
        overflow: visible;
        padding-right: 0;
    }

    .nav-indicator {
        display: none;
    }

    .page,
    .content-column {
        padding-bottom: 88px;
    }

    .hero-stats,
    .grid.two-up,
    .features,
    .repo-grid,
    .repo-grid-three {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    h1 {
        max-width: 13ch;
        font-size: clamp(2rem, 9vw, 3rem);
    }

    h2 {
        font-size: clamp(1.72rem, 8vw, 2.2rem);
    }

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

    .command-card,
    pre {
        padding: 18px 18px 58px;
    }

    .copy-btn {
        top: auto;
        bottom: 14px;
    }

    .metric-card,
    .fact-item,
    .repo-card {
        padding: 16px 18px;
    }

    .benchmark-table {
        min-width: 640px;
    }
}