:root {
    --bg: #f4f3ef;
    --ink: #111111;
    --mid: #5a5a57;
    --accent: #3535aa;
    --rule: #d0cfc8;
    --dot: #c8c7c0;
    --card-a: #a07828;
    --card-b: #3455a4;
    --card-c: #2d7a4a;
    --card-d: #8f3030;
    --code-bg: #fffbe5;
    --code-text: #222220;
    --code-rule: #e8e6d0;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #131311;
        --ink: #e4e3df;
        --mid: #888880;
        --accent: #7878e0;
        --rule: #2e2e2b;
        --dot: #383835;
        --code-bg: #242220;
        --code-text: #b4b1aa;
        --code-rule: #2e2e2b;
        --card-a: #d4a840;
        --card-b: #6888e8;
        --card-c: #52c078;
        --card-d: #d06868;
    }
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background: var(--bg);
    color: var(--ink);
    font-family: system-ui, sans-serif;
    font-size: 16px;
}

.dot-grid {
    background-image: radial-gradient(circle, var(--dot) 1px, transparent 1px);
    --dot-step: 20px;
    background-size: var(--dot-step) var(--dot-step);
}

.dot-grid.dense {
    --dot-step: 12px;
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem 2rem;
    border-bottom: 1px solid var(--rule);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.site-header .version-container {
    display: flex;
    align-items: center;
    color: var(--mid);
    font-weight: 400;
}

.site-header .version-select {
    background: transparent;
    border: 1px solid var(--rule);
    color: var(--mid);
    font-family: inherit;
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    outline: none;
    margin-left: auto;
}

.site-header .version-select:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.github-link {
    color: var(--mid);
    display: flex;
    align-items: center;
    transition: color 0.2s ease;
}

.github-link:hover {
    color: var(--ink);
}

.site-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.site-title svg {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
}

.hero {
    border-bottom: 1px solid var(--rule);
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-left {
    padding: 2rem;
    border-right: 1px solid var(--rule);
}

.hero-left h1 {
    font-size: 2.25rem;
    line-height: 1.15;
    margin-bottom: 1rem;
}

.hero-left h1 .light {
    font-weight: 300;
    display: block;
}

.hero-left h1 strong {
    font-weight: 900;
}

.hero-tagline {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

.hero-intro {
    font-size: 0.875rem;
    line-height: 1.65;
    color: var(--ink);
    margin-bottom: 1.5rem;
}

.diagram {
    border: 1px solid var(--ink);
    margin-top: 1.25rem;
}

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

.diagram-cell {
    padding: 1rem 1.25rem;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border: 1px solid var(--rule);
}

.diagram-cell .sub {
    font-weight: 400;
    font-size: 0.62rem;
    color: var(--ink);
    margin-top: 0.2rem;
    text-transform: none;
    letter-spacing: 0;
}

.hero-right {
    padding: 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 0.75rem;
    background: var(--bg);
}

.card {
    border: 1px solid var(--rule);
    padding: 1.25rem;
    text-decoration: none;
    color: var(--ink);
    display: block;
}

.card:hover {
    border-color: var(--accent);
}

.card-label {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

.card-desc {
    font-size: 0.78rem;
    color: var(--mid);
    line-height: 1.4;
}

.card-a {
    border: 2px solid var(--card-a);
}

.card-b {
    border: 2px solid var(--card-b);
}

.card-c {
    border: 2px solid var(--card-c);
}

.card-d {
    border: 2px solid var(--card-d);
}

.layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    max-width: 1200px;
    margin: 0 auto;
    min-height: 70vh;
}

#mobile-nav {
    border-right: 1px solid var(--rule);
    position: sticky;
    top: 0;
    height: fit-content;
    align-self: start;
}

#mobile-nav>summary {
    display: none;
}

#mobile-nav>aside {
    display: block !important;
}

aside {
    counter-reset: page-counter;
}

details[name="page"] {
    counter-increment: page-counter;
    position: relative;
    overflow: hidden;
}

details[name="page"]>summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    cursor: pointer;
    border-bottom: 1px solid var(--rule);
    list-style: none;
}

details[name="page"]>summary::-webkit-details-marker {
    display: none;
}

details[name="page"][open]>summary {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

details[name="page"]>summary::before {
    content: "0" counter(page-counter);
    font-family: monospace;
    font-size: 7rem;
    opacity: 0.06;
    position: absolute;
    right: 0.5rem;
    top: -0.5rem;
    font-weight: 900;
    pointer-events: none;
    line-height: 1;
}

details[name="page"]>summary .arr::before {
    content: "▸";
}

details[name="page"][open]>summary .arr::before {
    content: "▾";
    color: var(--accent);
}

main>article {
    display: none;
    padding: 2.5rem;
}

section {
    overflow: hidden;
}

.layout:has(#nav-arch[open]) #content-arch {
    display: block;
}

.layout:has(#nav-product[open]) #content-product {
    display: block;
}

.layout:has(#nav-platform[open]) #content-platform {
    display: block;
}

.layout:has(#nav-tutorials[open]) #content-tutorials {
    display: block;
}

.layout:has(#nav-platform[open]) #content-platform {
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr);
    padding: 0;
}

.sub-nav {
    border-right: 1px solid var(--rule);
    padding: 0.75rem 0;
}

details[name="plat-sub"]>summary {
    display: block;
    padding: 0.65rem 1.25rem;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    list-style: none;
    color: var(--mid);
}

details[name="plat-sub"]>summary::-webkit-details-marker {
    display: none;
}

details[name="plat-sub"][open]>summary {
    color: var(--accent);
}

#content-platform>section {
    display: none;
    padding: 2rem;
}

#content-platform:has(#nav-poc[open]) #content-poc {
    display: block;
}

#content-platform:has(#nav-cloud[open]) #content-cloud {
    display: block;
}

#content-platform:has(#nav-enterprise[open]) #content-enterprise {
    display: block;
}

h2 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

h3 {
    font-size: 0.8rem;
    font-weight: 700;
    margin: 1.75rem 0 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
}

p {
    font-size: 1rem;
    line-height: 1.65;
    margin-bottom: 1rem;
}

ul,
ol {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

li {
    font-size: 1rem;
    line-height: 1.65;
    margin-bottom: 0.2rem;
}

pre {
    background: var(--code-bg);
    color: var(--code-text);
    padding: 1.25rem;
    font-size: 85%;
    line-height: 1.55;
    overflow-x: auto;
    margin: 1rem 0;
    border: 1px solid var(--code-rule, transparent);
    border-radius: 4px;
    max-width: 100%;
}

:not(pre)>code {
    background: rgba(0, 0, 0, 0.07);
    padding: 0.1em 0.35em;
    font-size: 85%;
    font-family: monospace;
}

:not(pre)>code {
    background: rgba(255, 255, 255, 0.09);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
    margin: 1rem 0;
}

th {
    text-align: left;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: 0.68rem;
    padding: 0.6rem;
    border-bottom: 2px solid var(--ink);
}

td {
    padding: 0.55rem 0.6rem;
    border-bottom: 1px solid var(--rule);
    vertical-align: top;
    line-height: 1.5;
}

.lifecycle {
    display: flex;
    flex-wrap: wrap;
    border: 1px solid var(--ink);
    margin: 1.5rem 0;
}

.lc-step {
    padding: 0.75rem 1rem;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    border-right: 1px solid var(--rule);
    flex: 1;
}

.lc-step:last-child {
    border-right: none;
}

.lc-step .sub {
    font-weight: 400;
    font-size: 0.62rem;
    color: var(--mid);
    text-transform: none;
    margin-top: 0.2rem;
}

@media (max-width: 999px) {
    .layout {
        display: block;
    }

    .site-header {
        padding: 0.875rem 1rem;
        flex-wrap: nowrap;
    }

    .header-right {
        gap: 0.75rem;
        flex-wrap: nowrap;
    }

    .site-title {
        font-size: 0.6rem;
    }

    #mobile-nav {
        border-right: none;
        border-bottom: 1px solid var(--rule);
        position: static;
    }

    #mobile-nav>summary {
        display: block;
        padding: 0.875rem 1.5rem;
        font-size: 0.7rem;
        font-weight: 700;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        cursor: pointer;
        list-style: none;
        border-bottom: 1px solid var(--rule);
    }

    #mobile-nav>summary::-webkit-details-marker {
        display: none;
    }

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

    .hero-left {
        border-right: none;
        border-bottom: 1px solid var(--rule);
    }

    main>article {
        padding: 1.5rem;
    }

    .layout:has(#nav-platform[open]) #content-platform {
        grid-template-columns: 1fr;
    }

    .sub-nav {
        border-right: none;
        border-bottom: 1px solid var(--rule);
    }
}