/* NuKey docs: hub cards, guide layout, steps, callouts. Loaded after site.css. */
.docs-hero { padding: clamp(40px, 6vw, 88px) 0 clamp(24px, 3vw, 40px); }
.docs-hero h1 { font-size: clamp(40px, 6vw, 76px); margin: 16px 0 18px; max-width: 16ch; }
.crumbs { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.crumbs a:hover { color: var(--ink); }
.crumbs i { font-style: normal; opacity: .4; }
.docs-search { display: block; width: min(100%, 520px); margin: 26px 0 0; padding: 15px 20px; border-radius: 999px; border: 1px solid var(--line-2); background: var(--white); font: inherit; font-size: 16px; color: var(--ink); box-shadow: var(--shadow-sm); }
.docs-search:focus { outline: 3px solid var(--mint-tint); border-color: var(--mint); }
.docs-section { padding: clamp(28px, 4vw, 52px) 0 0; }
.docs-section > h2 { font-size: clamp(24px, 2.6vw, 32px); letter-spacing: -.03em; margin-bottom: 6px; }
.docs-section > p { margin: 0 0 18px; color: var(--muted); max-width: 62ch; }
.guide-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 270px), 1fr)); gap: 12px; }
.guide-card { display: flex; flex-direction: column; gap: 6px; padding: 20px 20px 18px; border-radius: var(--r-md); background: var(--white); border: 1px solid var(--line); transition: transform .3s var(--spring), box-shadow .3s, border-color .3s; }
.guide-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--line-2); }
.guide-card h3 { font-size: 18px; display: flex; justify-content: space-between; gap: 10px; }
.guide-card h3 span { color: var(--mint-ink); transition: transform .3s var(--spring); }
.guide-card:hover h3 span { transform: translate(2px, -2px); }
.guide-card p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.5; }
.tag-pro { display: inline-block; padding: 2px 8px; border-radius: 999px; background: var(--ember-tint); color: var(--ember-ink); font-size: 11px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; vertical-align: middle; }
.docs-help { margin: clamp(48px, 6vw, 88px) 0 0; padding: 28px; border-radius: var(--r-lg); background: var(--graphite); color: #f4f5f4; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; }
.docs-help h3 { color: #fff; } .docs-help p { margin: 4px 0 0; color: rgba(244, 245, 244, .66); }
.docs-help .btn-ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .3); }

.guide-layout { display: grid; grid-template-columns: 250px minmax(0, 1fr) 200px; gap: clamp(24px, 3.5vw, 56px); align-items: start; padding-bottom: 40px; }
.side-nav, .toc { position: sticky; top: 92px; max-height: calc(100vh - 110px); overflow: auto; font-size: 14px; scrollbar-width: thin; }
.side-nav h4 { margin: 18px 0 6px; font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--faint); font-weight: 800; }
.side-nav h4:first-child { margin-top: 0; }
.side-nav a { display: block; padding: 6px 10px; margin: 0 -10px; border-radius: 8px; color: var(--ink-2); font-weight: 500; line-height: 1.35; }
.side-nav a:hover { background: rgba(18, 20, 22, .05); }
.side-nav a[aria-current="page"] { background: var(--mint-tint); color: var(--mint-ink); font-weight: 700; }
.toc h4 { margin: 0 0 8px; font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--faint); font-weight: 800; }
.toc a { display: block; padding: 5px 0 5px 12px; border-left: 2px solid var(--line); color: var(--muted); font-weight: 500; line-height: 1.35; }
.toc a:hover, .toc a.on { color: var(--ink); border-left-color: var(--mint); }

.guide { min-width: 0; }
.guide-head { padding: clamp(8px, 2vw, 24px) 0 8px; }
.guide-head h1 { font-size: clamp(34px, 4.4vw, 54px); line-height: 1.02; margin: 14px 0 14px; }
.guide-head .lede { margin: 0; }
.prose { font-size: 16.5px; line-height: 1.7; color: var(--ink-2); }
.prose h2 { font-size: clamp(24px, 2.4vw, 30px); letter-spacing: -.03em; margin: 2.2em 0 .5em; padding-top: .4em; scroll-margin-top: 90px; color: var(--ink); }
.prose h3 { font-size: 19px; margin: 1.6em 0 .4em; color: var(--ink); scroll-margin-top: 90px; }
.prose p { margin: .8em 0; text-wrap: pretty; }
.prose a { color: var(--mint-ink); text-decoration: underline; text-decoration-color: rgba(20, 165, 148, .35); text-underline-offset: 3px; }
.prose a:hover { text-decoration-color: var(--mint-ink); }
.prose ul, .prose ol { padding-left: 1.3em; margin: .8em 0; }
.prose li { margin: .35em 0; padding-left: .2em; }
.prose strong { color: var(--ink); font-weight: 700; }
.prose code, .path { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: .86em; padding: 2px 7px; border-radius: 6px; background: rgba(18, 20, 22, .06); color: var(--ink); white-space: nowrap; }
.path { white-space: normal; background: var(--mint-tint); color: var(--mint-ink); font-family: inherit; font-weight: 600; }
.prose ol.steps { list-style: none; counter-reset: s; padding: 0; }
.prose ol.steps > li { counter-increment: s; position: relative; padding: 14px 16px 14px 56px; margin: 10px 0; background: var(--white); border: 1px solid var(--line); border-radius: var(--r-md); }
.prose ol.steps > li::before { content: counter(s); position: absolute; left: 14px; top: 13px; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--ink); color: #fff; font-size: 13px; font-weight: 800; }
.callout { margin: 1.2em 0; padding: 14px 18px; border-radius: var(--r-md); border: 1px solid var(--line); background: var(--white); font-size: 15.5px; line-height: 1.6; }
.callout b { display: block; margin-bottom: 2px; font-size: 12px; letter-spacing: .09em; text-transform: uppercase; }
.callout p { margin: .3em 0; }
.callout.tip { background: var(--mint-tint); border-color: rgba(20, 165, 148, .25); } .callout.tip b { color: var(--mint-ink); }
.callout.pro { background: var(--ember-tint); border-color: rgba(242, 122, 56, .28); } .callout.pro b { color: var(--ember-ink); }
.callout.warn { background: #fff4e0; border-color: #f2d8a0; } .callout.warn b { color: #8a5a00; }
.callout.note b { color: var(--muted); }
.ref { width: 100%; border-collapse: separate; border-spacing: 0; margin: 1.2em 0; font-size: 15px; background: var(--white); border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; }
.ref th, .ref td { text-align: left; vertical-align: top; padding: 11px 16px; border-bottom: 1px solid var(--line); }
.ref tr:last-child th, .ref tr:last-child td { border-bottom: 0; }
.ref th { width: 34%; font-weight: 700; color: var(--ink); background: rgba(18, 20, 22, .02); }
.ref td { color: var(--ink-2); }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 56px; }
.pager a { display: block; padding: 18px 20px; border-radius: var(--r-md); background: var(--white); border: 1px solid var(--line); transition: border-color .25s, transform .25s var(--spring); }
.pager a:hover { border-color: var(--ink); transform: translateY(-2px); }
.pager small { display: block; color: var(--faint); font-weight: 700; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.pager a.next { text-align: right; grid-column: 2; }
.pager strong { font-size: 17px; letter-spacing: -.02em; }
.guide-foot { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14.5px; }
.guide-foot a { color: var(--mint-ink); font-weight: 600; }
.mobile-guides { display: none; }
@media (max-width: 1100px) { .guide-layout { grid-template-columns: 230px minmax(0, 1fr); } .toc { display: none; } }
@media (max-width: 780px) {
    .guide-layout { grid-template-columns: 1fr; }
    .side-nav { display: none; }
    .mobile-guides { display: block; margin: 12px 0 0; }
    .mobile-guides select { width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line-2); background: var(--white); font: inherit; font-size: 15px; color: var(--ink); }
    .ref th { width: 40%; }
    .pager { grid-template-columns: 1fr; } .pager a.next { grid-column: 1; }
}