/* Guides, design system v2 (boards 12, 13, 15, 16): the lifted-black support theme (see styles.css), structure instead of a
   different ground for long reading, sapphire only as a hairline, a marker or an underline. */
.guide-body { min-height: 100dvh; }
.guide-home-main, .guide-doc-main { position: relative; z-index: 2; width: min(var(--section-w), calc(100% - var(--section-x) * 2)); margin: auto; padding: var(--page-top) 0 20px; }
.guide-home-hero { max-width: 880px; }
.guide-home-hero h1 { margin: 0; max-width: 6.4em; font-size: clamp(48px, 5.6vw, 80px); font-weight: 500; line-height: 1.05; letter-spacing: -.04em; text-wrap: balance; }
.guide-doc-hero h1 { margin: 0; max-width: 980px; font-size: var(--page-title); font-weight: 500; line-height: 1.15; letter-spacing: -.04em; text-wrap: balance; }
.guide-title-phrase { display: inline-block; white-space: nowrap; }
html:lang(ja) .guide-doc-hero h1 .rm-mark { margin-inline-end: .12em; }
.guide-home-lead, .guide-doc-lead { max-width: 820px; margin: 28px 0 0; color: var(--text-2); font-size: var(--body-size); line-height: 1.9; }
.guide-search { max-width: 820px; margin-top: 48px; }
.guide-doc-main > .guide-search { margin-top: 40px; margin-bottom: 64px; }
.guide-search-form { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; align-items: center; gap: 8px; padding: 8px; border-radius: 32px; border: 1px solid var(--line); background: var(--panel); transition: border-color var(--dur-hover) var(--ease-settle); }
.guide-search-form:focus-within { border-color: var(--focus-ring); outline: 2px solid var(--focus-ring); outline-offset: 2px; }
.guide-search-form[data-bevel] { --bi: 32px; }
.guide-search-field { display: flex; align-items: center; gap: 12px; min-width: 0; padding: 0 12px 0 20px; cursor: text; }
.guide-search-icon { flex: none; color: var(--text-3); }
.guide-search-kbd { padding: 3px 8px; border: 1px solid var(--line-2); border-radius: var(--radius-control); color: var(--text-3); font-family: var(--font-mono), var(--font-ui); font-size: var(--fs-label); line-height: 1.5; white-space: nowrap; }
.guide-search-label { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.guide-search-field input { width: 100%; border: 0; outline: 0; padding: 0; color: var(--ink); background: transparent; font: 400 var(--fs-compact) / 1.6 var(--font-ui); }
.guide-search-field input::placeholder { color: var(--dim); opacity: 1; }
.guide-search-form > button { min-width: 88px; min-height: 44px; align-self: center; border: 0; border-radius: var(--radius-button); padding: 0 22px; color: var(--n-2); cursor: pointer; background: var(--accent); font: 500 var(--fs-caption) var(--font-ui); transition: background var(--dur-hover) var(--ease-settle), transform var(--dur-hover) var(--ease-settle); }
.guide-search-form > button:hover { background: #fff; transform: translateY(-1px); }
.guide-search-form > button:active, .guide-search-form > button:hover:active { transform: scale(.98); transition-duration: var(--dur-press); }
.guide-search-hint { margin: 14px 0 0; color: var(--text-3); font-size: var(--fs-note); line-height: 1.75; }
.guide-search-term { padding: 0; border: 0; color: var(--text-2); background: transparent; font: inherit; cursor: pointer; text-decoration: underline; text-decoration-color: var(--sapphire-300); text-decoration-thickness: 1px; text-underline-offset: .28em; transition: color var(--dur-hover) var(--ease-settle); }
.guide-search-term:hover { color: var(--text-1); }
.guide-search-term:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 3px; border-radius: 2px; }
.guide-hit { text-decoration: underline; text-decoration-color: var(--sapphire-300); text-decoration-thickness: 1px; text-underline-offset: .25em; }
.guide-search-results { margin-top: 20px; border: 1px solid var(--line); border-radius: var(--radius-panel); background: var(--panel); overflow: hidden; }
.lang-pane[hidden] { display: none !important; }
.guide-search-results-head { padding: 16px 20px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line); }
.guide-search-results-head p { margin: 0; color: var(--text-2); font-size: var(--fs-note); line-height: 1.7; }
.guide-search-results-head button { border: 0; min-height: 36px; padding: 6px; color: var(--muted); cursor: pointer; background: transparent; font: 500 var(--fs-note) var(--font-ui); white-space: nowrap; flex-shrink: 0; }
.guide-search-results-head button:hover { color: var(--ink); }
.guide-search-result-list { display: grid; }
.guide-search-result { position: relative; min-width: 0; padding: 24px 52px 24px 24px; display: grid; gap: 8px; border-bottom: 1px solid var(--line); transition: background var(--dur-hover) var(--ease-settle); }
.guide-search-result:last-child { border-bottom: 0; }
.guide-search-result:hover { background: var(--panel-strong); }
.guide-search-result-meta { color: var(--text-3); font-size: 10px; line-height: 1.5; letter-spacing: .08em; }
.guide-search-result strong { color: var(--ink); font-size: var(--fs-lead); font-weight: 500; line-height: 1.5; }
.guide-search-result-snippet { color: var(--muted); font-size: var(--fs-caption); line-height: 1.8; display: -webkit-box; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.guide-search-result-arrow { display: flex; position: absolute; top: 50%; right: 22px; color: var(--muted); font-size: var(--fs-lead); transform: translateY(-50%); }
.guide-list-label { margin: 72px 0 20px; display: flex; align-items: center; justify-content: space-between; color: var(--text-3); font-size: var(--fs-label); line-height: 1.5; font-weight: 500; letter-spacing: .1em; }
.guide-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.guide-card { position: relative; display: flex; min-width: 0; min-height: 380px; padding: 32px; flex-direction: column; border-radius: 16px; background: var(--panel); border: 1px solid var(--line); transition: border-color var(--dur-hover) var(--ease-settle), background var(--dur-hover) var(--ease-settle); }
@media (hover: hover) { .guide-card:hover { background: var(--panel-strong); border-color: var(--line-strong); } }
.guide-card h2 { margin: 0 0 20px; font-size: var(--page-section-title); line-height: 1.25; letter-spacing: -.03em; font-weight: 500; }
.guide-card-icon { display: block; width: 66px; height: 66px; margin: 0 0 32px; }
.guide-card-icon path { fill: none; stroke-linecap: round; }
.guide-card-icon .dim { stroke: var(--n-5); stroke-width: .58; opacity: .7; }
.guide-card-icon .lit { stroke: var(--text-1); stroke-width: .76; }
.guide-card-copy { max-width: 680px; margin: 0; color: var(--text-2); font-size: var(--fs-small); line-height: 1.9; }
.guide-card-bottom { margin-top: auto; padding-top: 32px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.guide-card-meta { color: var(--text-3); font-family: var(--font-mono), var(--font-ui); font-size: var(--fs-label); line-height: 1.8; }
.guide-card-root .guide-card-meta::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 8px; border-radius: 50%; background: var(--status-amber); vertical-align: 1px; }
.guide-card-arrow { display: grid; width: 36px; height: 36px; flex: 0 0 auto; place-items: center; border: 1px solid var(--line); border-radius: var(--radius-button); color: var(--text-1); font-size: var(--fs-lead); }
.guide-topic-label { margin-top: 40px; }
.guide-topic-grid { display: grid; }
.guide-card-network { display: grid; min-height: 0; grid-template-columns: 1fr 1.2fr; gap: 20px 48px; align-items: start; }
.guide-card-network h2 { margin: 0; }
.guide-card-network .guide-card-bottom { grid-column: 1 / -1; padding-top: 8px; }
.guide-home-note { max-width: 720px; margin: 28px 0 0; color: var(--text-3); font-size: var(--fs-note); line-height: 1.8; }
.guide-doc-hero { max-width: 1000px; }
.guide-breadcrumb { display: flex; flex-wrap: wrap; width: fit-content; min-height: 36px; margin-bottom: 24px; align-items: center; gap: 4px 10px; color: var(--text-3); font-size: var(--fs-caption); line-height: 1.6; }
.guide-breadcrumb a { padding-block: 3px; color: var(--text-3); background: var(--link-line) 0 100% / 0 1px no-repeat; transition: color var(--dur-hover) var(--ease-settle), background-size var(--dur-panel) var(--ease-reveal); }
.guide-breadcrumb a:hover, .guide-breadcrumb a:focus-visible { color: var(--text-1); background-size: 100% 1px; }
.guide-breadcrumb-sep { color: var(--text-4); }
.guide-breadcrumb-chapter { color: var(--text-1); }
.guide-breadcrumb [hidden] { display: none; }
.guide-doc-hero .eyebrow { display: block; margin: 0 0 16px; padding: 0; border-radius: 0; background: none; box-shadow: none; color: var(--text-2); font-size: var(--fs-label); font-weight: 500; line-height: 1.5; letter-spacing: .16em; text-transform: uppercase; }
.guide-doc-hero .eyebrow::before { content: ""; display: inline-block; width: 12px; height: 12px; margin: 0 12px 0 0; vertical-align: -1px; background: var(--sapphire-300); -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2'%3E%3Cpath d='M2 3h20L12 21z'/%3E%3C/svg%3E") center / contain no-repeat; mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2'%3E%3Cpath d='M2 3h20L12 21z'/%3E%3C/svg%3E") center / contain no-repeat; }
.guide-doc-meta { margin-top: 28px; display: flex; flex-wrap: wrap; align-items: center; color: var(--text-3); font-family: var(--font-mono), var(--font-ui); font-size: var(--fs-note); line-height: 1.6; }
.guide-doc-meta > span + span { margin-left: 16px; padding-left: 16px; border-left: 1px solid var(--line-2); }
.guide-doc-layout { display: grid; grid-template-columns: minmax(180px, 220px) minmax(0, 720px) minmax(140px, 180px); gap: 48px; align-items: start; }
.guide-toc, .guide-rail { position: sticky; top: 116px; max-height: calc(100dvh - 144px); }
.guide-toc { overflow: auto; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.guide-toc > p, .guide-rail > p { margin: 0 0 20px; color: var(--text-3); font-size: var(--fs-label); line-height: 1.6; font-weight: 500; letter-spacing: .08em; }
.guide-toc nav { display: grid; gap: 2px; }
.toc-link { display: block; border-left: 1px solid var(--line-2); padding: 8px 12px; color: var(--text-2); font-size: var(--fs-caption); line-height: 1.7; transition: color var(--dur-hover) var(--ease-settle), border-color var(--dur-hover) var(--ease-settle); }
.toc-link:hover { color: var(--text-1); }
.toc-link.active { color: var(--text-1); border-left-color: var(--sapphire-300); }
.toc-depth-1 { padding-left: 24px; color: var(--text-3); font-size: var(--fs-note); }
.toc-depth-1:hover, .toc-depth-1.active { color: var(--text-1); }
.guide-rail { padding: 0 0 0 20px; border-left: 1px solid var(--line); color: var(--text-2); }
.guide-rail span { font-size: var(--fs-note); line-height: 1.85; }
.guide-mobile-toc { display: none; }
.guide-article { min-width: 0; }
.guide-article :is(h2,h3,h4,h5) { scroll-margin-top: 116px; text-wrap: pretty; font-weight: 550; }
.guide-article h2 { margin: 80px 0 28px; padding-top: 32px; border-top: 1px solid var(--line); font-size: 32px; line-height: 1.4; letter-spacing: -.025em; }
.guide-article h2:first-child { margin-top: 0; }
.guide-article h3 { margin: 48px 0 20px; font-size: var(--fs-h3); line-height: 1.45; letter-spacing: -.015em; }
.guide-article h4 { margin: 36px 0 16px; color: var(--ink); font-size: 19px; line-height: 1.55; }
.guide-article h5 { margin: 28px 0 14px; color: var(--ink); font-size: var(--fs-body); line-height: 1.6; }
.guide-article :is(h2,h3,h4,h5) a { background: var(--link-line) 0 100% / 0 1px no-repeat; transition: background-size var(--dur-panel) var(--ease-reveal); -webkit-box-decoration-break: clone; box-decoration-break: clone; }
.guide-article :is(h2,h3,h4,h5) a:hover, .guide-article :is(h2,h3,h4,h5) a:focus-visible { background-size: 100% 1px; }
.guide-article p, .guide-article li { color: var(--text-2); font-size: var(--fs-body); line-height: 1.85; }
.guide-article p { margin: 0 0 20px; }
.guide-article ul, .guide-article ol { margin: 18px 0 28px; padding-left: 1.4rem; }
.guide-article li { margin: 8px 0; padding-left: .3rem; }
.guide-article li::marker { color: var(--text-3); }
/* Steps: a mono number in the margin, a hairline between steps */
.guide-article ol { counter-reset: step; margin: 20px 0 32px; padding: 0; list-style: none; border-top: 1px solid var(--line-1); }
.guide-article ol > li { counter-increment: step; position: relative; margin: 0; padding: 14px 0 14px 52px; border-bottom: 1px solid var(--line-1); }
.guide-article ol > li::before { content: counter(step); position: absolute; left: 0; top: 17px; color: var(--sapphire-300); font-family: var(--font-mono); font-size: var(--fs-caption); line-height: 1.7; }
.guide-article ol > li > :is(ol, ul) { margin: 12px 0 0; }
.guide-article ol > li > :is(p, ul, ol):last-child { margin-bottom: 0; }
.guide-article strong { color: var(--text-1); font-weight: 600; }
.guide-article code { border-radius: 3px; padding: .12em .35em; color: var(--text-1); background: var(--panel-strong); border: 1px solid var(--line); font-family: var(--font-mono), "SFMono-Regular", Consolas, "Liberation Mono", monospace; font-size: .88em; overflow-wrap: anywhere; }
.guide-table-wrap { margin: 28px 0 36px; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-control); }
.guide-table-wrap:focus-visible, .guide-code pre:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 3px; }
.guide-table-wrap table { width: 100%; min-width: 520px; border-collapse: collapse; }
.guide-table-wrap th, .guide-table-wrap td { padding: 16px; border-bottom: 1px solid var(--line); color: var(--text-2); font-size: var(--fs-small); line-height: 1.8; text-align: left; vertical-align: top; }
.guide-table-wrap th { word-break: keep-all; color: var(--text-1); background: var(--panel); font-weight: 550; }
.guide-table-wrap tr:last-child td { border-bottom: 0; }
.guide-code { position: relative; margin: 28px 0 36px; overflow: hidden; border-radius: var(--radius-panel); border: 1px solid var(--line); background: var(--bg-2); }
.guide-code button { position: absolute; z-index: 2; top: 6px; right: 8px; min-width: 64px; min-height: 44px; border: 0; border-radius: var(--radius-button); padding: 6px 14px; color: var(--text-2); cursor: pointer; background: transparent; font: 500 var(--fs-note) var(--font-ui); transition: color var(--dur-hover) var(--ease-settle), background var(--dur-hover) var(--ease-settle); }
.guide-code button:hover { color: var(--text-1); background: var(--panel-strong); }
.guide-code pre { margin: 0; overflow-x: auto; padding: 56px 20px 24px; }
.guide-code pre code { padding: 0; color: var(--text-2); background: transparent; border: 0; font-size: var(--fs-caption); line-height: 1.8; overflow-wrap: normal; }
.guide-code pre code.language-text { white-space: pre-wrap; overflow-wrap: anywhere; }
.guide-notice { display: flex; align-items: baseline; gap: 12px; margin: 28px 0 36px; padding: 18px 22px; border: 1px solid var(--line-1); border-radius: var(--radius-panel); background: var(--panel); }
.guide-notice::before { content: ""; flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--status-amber); transform: translateY(-2px); }
.guide-notice > span { flex: none; color: var(--text-1); font-size: var(--fs-caption); font-weight: 550; line-height: 1.7; }
.guide-notice p { margin: 0; font-size: var(--fs-small); line-height: 1.75; }
/* On phones the label and the dot sit on their own line: beside them the text column was only 80-130px wide */
@media (max-width: 560px) {
  .guide-notice { flex-wrap: wrap; row-gap: 6px; }
  .guide-notice p { flex: 1 1 100%; }
}
.guide-next { margin-top: 64px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px 24px; border-top: 1px solid var(--line); padding: 32px 0; transition: border-color var(--dur-hover) var(--ease-settle); }
.guide-next:hover { border-color: var(--line-strong); }
.guide-next > span:first-child { grid-column: 1; color: var(--text-3); font-size: var(--fs-label); letter-spacing: .08em; }
.guide-next strong { grid-column: 1; font-size: var(--fs-h4); line-height: 1.5; font-weight: 500; }
.guide-next > span:last-child { grid-column: 2; grid-row: 1 / 3; align-self: center; color: var(--text-1); font-size: var(--fs-h3); }
.guide-github-link { width: fit-content; margin: 40px 0 8px; }
.guide-github-link span { color: inherit; }
@media (max-width: 1120px) {
  .guide-card-grid { gap: 14px; }
  .guide-card { padding: 24px; }
  .guide-doc-layout { grid-template-columns: 180px minmax(0, 720px); gap: 36px; }
  .guide-rail { display: none; }
}
@media (max-width: 820px) {
  .guide-card-grid { grid-template-columns: 1fr; }
  .guide-card { min-height: 0; }
  .guide-card-icon { margin-bottom: 28px; }
  .guide-card-network { display: flex; gap: 0; }
  .guide-card-network .guide-card-bottom { padding-top: 32px; }
  .guide-card-network h2 { margin-top: 28px; }
  .guide-doc-layout { display: block; }
  .guide-toc { display: none; }
  .guide-mobile-toc { display: block; margin: 0 0 40px; border-radius: var(--radius-button); color: var(--text-2); border: 1px solid var(--line); background: var(--panel); }
  .guide-mobile-toc summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 20px; min-height: 48px; cursor: pointer; font-size: var(--fs-small); font-weight: 500; list-style: none; }
  .guide-mobile-toc summary::-webkit-details-marker { display: none; }
  .guide-mobile-toc summary::after { content: ""; flex: none; width: 8px; height: 8px; margin: -4px 4px 0 0; border: solid var(--text-3); border-width: 0 1.6px 1.6px 0; transform: rotate(45deg); transition: transform var(--dur-hover) var(--ease-settle); }
  .guide-mobile-toc[open] summary::after { margin-top: 2px; transform: rotate(-135deg); }
  .guide-mobile-toc[open] { border-radius: var(--radius-panel); }
  .guide-mobile-toc-current { margin-left: auto; min-width: 0; overflow: hidden; color: var(--text-3); font-weight: 400; text-overflow: ellipsis; white-space: nowrap; }
  .guide-mobile-toc nav { max-height: 58dvh; overflow: auto; padding: 0 16px 20px; }
  .guide-mobile-toc .toc-link { padding-block: 12px; font-size: var(--fs-small); }
  .guide-mobile-toc .toc-depth-1 { font-size: var(--fs-caption); }
  .guide-doc-hero h1 { font-size: 36px; }
  .guide-article h2 { margin-top: 64px; font-size: 26px; }
  .guide-article h3 { margin-top: 40px; font-size: var(--fs-h4); }
  .guide-article h4 { font-size: var(--fs-lead); }
  .guide-article p, .guide-article li { font-size: var(--fs-compact); }
  .guide-doc-main > .guide-search { margin-bottom: 40px; }
}
@media (max-width: 440px) {
  html:lang(ja) .guide-card h2 { white-space: pre-line; }
  .guide-search-field { padding-inline: 8px; }
  .guide-search-form > button { min-width: 60px; padding-inline: 12px; }
  .guide-search-field input { font-size: var(--fs-small); }
  .guide-search-result { padding: 20px 42px 20px 20px; }
  .guide-search-result-arrow { right: 16px; }
  .guide-next strong { font-size: var(--fs-lead-l); }
  .guide-github-link { width: 100%; }
}

@media (max-width: 820px) {
  .guide-home-main, .guide-doc-main { padding-bottom: 16px; }
}

@media (hover: none), (max-width: 520px) {
  .guide-search-kbd { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .guide-search-form, .guide-search-form > button, .guide-card, .guide-search-term, .guide-breadcrumb a, .guide-article :is(h2,h3,h4,h5) a, .toc-link, .guide-code button, .guide-mobile-toc summary::after { transition: none; }
  .guide-search-form > button:hover, .guide-search-form > button:active { transform: none; }
}

/* Search results rise one after another when the results panel appears (guides.js sets --i and .is-entering) */
@keyframes guide-result-in { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: no-preference) {
  .guide-search-result-list.is-entering .guide-search-result { animation: guide-result-in 460ms var(--ease-reveal) backwards; animation-delay: calc(var(--i, 0) * 45ms); }
}