:root {
    --bg: #f5f7fb;
    --paper: #ffffff;
    --ink: #1d2633;
    --muted: #5e6978;
    --line: #d9e1ea;
    --accent: #176d75;
    --accent-soft: #e7f4f3;
    --code-bg: #17212d;
    --code: #edf6ff;
    --shadow: 0 18px 40px rgba(29, 38, 51, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: auto;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
}

.hero {
    padding: 56px clamp(22px, 5vw, 72px);
    background: #12343b;
    color: white;
}

.doc-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 28px;
}

.back-to-site {
    display: inline-block;
    color: #9ee0dc;
    font-weight: 750;
    text-decoration: none;
}

.doc-language select {
    min-width: 72px;
    padding: 10px 30px 10px 13px;
    border: 1px solid rgba(255, 255, 255, 0.32);
    border-radius: 8px;
    background: #0c2b31;
    color: #ffffff;
    font: 800 12px/1.2 Inter, ui-sans-serif, system-ui, sans-serif;
    letter-spacing: 0.08em;
    cursor: pointer;
}

.doc-language select:hover,
.doc-language select:focus-visible {
    border-color: #9ee0dc;
    outline: none;
}

.back-to-site:hover,
.back-to-site:focus-visible {
    color: #ffffff;
    text-decoration: underline;
}

.hero h1 {
    max-width: 980px;
    margin: 0;
    font-size: clamp(38px, 6vw, 68px);
    line-height: 1;
    letter-spacing: 0;
}

.hero > p:not(.eyebrow) {
    max-width: 900px;
    margin: 26px 0 0;
    color: #d9f3f1;
    font-size: 18px;
    line-height: 1.7;
}

.eyebrow {
    margin: 0 0 10px;
    color: #9ee0dc;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.doc-search {
    position: relative;
    width: min(720px, 100%);
    margin-top: 28px;
}

.doc-search__label {
    display: block;
    margin-bottom: 7px;
    color: #d9f3f1;
    font-size: 14px;
    font-weight: 700;
}

.doc-search__field {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 14px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    background: white;
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.18);
}

.doc-search__field:focus-within {
    outline: 3px solid rgba(158, 224, 220, 0.45);
    border-color: #9ee0dc;
}

.doc-search__field svg {
    flex: 0 0 20px;
    width: 20px;
    fill: none;
    stroke: var(--accent);
    stroke-linecap: round;
    stroke-width: 2;
}

.doc-search__field input {
    min-width: 0;
    width: 100%;
    padding: 14px 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--ink);
    font: inherit;
}

.doc-search__field kbd {
    white-space: nowrap;
    padding: 3px 7px;
    border: 1px solid var(--line);
    border-radius: 5px;
    background: var(--bg);
    color: var(--muted);
    font: 12px "Cascadia Code", Consolas, monospace;
}

.doc-search__results {
    position: absolute;
    z-index: 10;
    top: calc(100% - 1px);
    right: 0;
    left: 0;
    max-height: min(420px, 55vh);
    overflow-y: auto;
    border: 1px solid var(--line);
    border-radius: 0 0 8px 8px;
    background: var(--paper);
    box-shadow: var(--shadow);
}

.doc-search__result {
    display: block;
    width: 100%;
    padding: 12px 16px;
    border: 0;
    border-bottom: 1px solid var(--line);
    background: transparent;
    color: var(--ink);
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.doc-search__result:last-child {
    border-bottom: 0;
}

.doc-search__result:hover,
.doc-search__result[aria-selected="true"] {
    background: var(--accent-soft);
}

.doc-search__result strong,
.doc-search__result span {
    display: block;
}

.doc-search__result span {
    margin-top: 2px;
    overflow: hidden;
    color: var(--muted);
    font-size: 13px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.doc-search__empty {
    margin: 0;
    padding: 16px;
    color: var(--muted);
}

.doc-search__status {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.card.search-target {
    animation: search-target 1.5s ease-out;
}

@keyframes search-target {
    0%, 35% { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(23, 109, 117, 0.2); }
    100% { border-color: var(--line); box-shadow: var(--shadow); }
}

.layout {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 24px;
    width: min(1440px, 100%);
    margin: 0 auto;
    padding: 26px clamp(16px, 3vw, 42px) 56px;
}

.toc {
    position: sticky;
    top: 16px;
    align-self: start;
    display: grid;
    gap: 4px;
    max-height: calc(100vh - 32px);
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--paper);
    box-shadow: var(--shadow);
}

.toc a {
    padding: 8px 10px;
    border-radius: 6px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}

.toc a:hover {
    color: var(--accent);
    background: var(--accent-soft);
}

.content {
    display: grid;
    gap: 20px;
}

.card {
    padding: clamp(22px, 3vw, 34px);
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--paper);
    box-shadow: var(--shadow);
}

h2 {
    margin: 0 0 16px;
    font-size: clamp(26px, 3vw, 36px);
    line-height: 1.15;
    letter-spacing: 0;
}

h3 {
    margin: 26px 0 10px;
    font-size: 20px;
}

p {
    margin: 0 0 14px;
}

code {
    padding: 2px 5px;
    border-radius: 5px;
    background: var(--accent-soft);
    color: #0e4f56;
    font-family: "Cascadia Code", Consolas, monospace;
    font-size: 0.92em;
}

pre {
    overflow: auto;
    margin: 16px 0;
    padding: 16px;
    border-radius: 8px;
    background: var(--code-bg);
    color: var(--code);
}

pre code {
    padding: 0;
    background: transparent;
    color: inherit;
}

table {
    width: 100%;
    margin: 16px 0;
    border: 1px solid var(--line);
    border-collapse: collapse;
}

th,
td {
    padding: 11px 12px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

th {
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

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

.note {
    padding: 12px 14px;
    border-left: 4px solid var(--accent);
    border-radius: 6px;
    background: var(--accent-soft);
}

.build-guidance {
    margin-top: 34px;
    padding: 22px 24px;
    border: 1px solid var(--line);
    border-left: 4px solid var(--accent);
    border-radius: 8px;
    background: var(--accent-soft);
}

.build-guidance h3 {
    margin-top: 0;
}

.build-guidance p {
    margin: 8px 0;
}

li + li {
    margin-top: 7px;
}

@media (max-width: 960px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .toc {
        position: static;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        max-height: none;
        overflow: visible;
    }
}

@media (max-width: 520px) {
    .doc-search__field kbd {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .card.search-target { animation: none; }
}