/* =========================================================
   CATEGORY GUIDES — learn.php (/learn and /learn/<slug>)
   Coloured entirely from brand.css tokens, so the customer
   (light) and trade (dark) themes both work. Flat colour,
   hairlines, tight corners, micro-uppercase labels.
   ========================================================= */

.lg {
    --lg-muted: var(--ink-3);
    --lg-raise: var(--paper-2);
    --lg-card:  #ffffff;
    --lg-line2: #cfcfcf;
    --lg-callout-bg:   var(--jb-blue-soft);
    --lg-callout-line: #c4e0ee;
    --lg-r: 3px;
    color: var(--ink);
    font-feature-settings: "tnum";
}
body[data-theme="trade"] .lg {
    --lg-muted: #8f8f8f;            /* --ink-3 is too faint for small text on near-black */
    --lg-card:  var(--paper-2);
    --lg-line2: #3d3d3d;
    --lg-callout-line: rgba(58, 163, 206, 0.35);
}

.lg-wrap {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 40px;
    box-sizing: border-box;
}

/* ---------- shared type ---------- */
.lg-meta, .lg-eyebrow, .lg-fact__k, .lg-toc__h, .lg-shop__k, .lg-callout__k,
.lg-close__k, .lg-more__k, .lg-more__tag, .lg-tag, .lg-btn, .lg-link, .lg-card__meta {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: var(--tracking-wider, 0.16em);
    text-transform: uppercase;
}
.lg-h1 {
    margin: 22px 0 0;
    font-size: clamp(3rem, 6vw, 5.5rem);
    line-height: 0.95;
    font-weight: 800;
    letter-spacing: -0.045em;
    color: var(--ink);
}
.lg-h1__hl { color: var(--jb-blue); }
.lg-h2 {
    margin: 12px 0 18px;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    line-height: 1.1;
    font-weight: 800;
    letter-spacing: -0.03em;
}
.lg-h3 { margin: 0 0 10px; font-size: 1.4rem; font-weight: 700; letter-spacing: -0.02em; }
.lg-eyebrow { margin: 0; color: var(--jb-blue); }
.lg-intro {
    margin: 26px 0 0;
    max-width: 560px;
    font-size: 1.2rem;
    line-height: 1.6;
    color: var(--ink-2);
}
.lg-prose { font-size: 1.06rem; line-height: 1.75; color: var(--ink-2); }
.lg-prose--sm { font-size: 0.95rem; }
.lg-prose p { margin: 0 0 16px; }
.lg-prose h2, .lg-prose h3 { color: var(--ink); letter-spacing: -0.02em; }
.lg-prose a { color: var(--jb-blue-deep); }
body[data-theme="trade"] .lg-prose a { color: var(--jb-blue); }
.lg-prose ul, .lg-prose ol { padding-left: 1.2em; margin: 0 0 16px; }
.lg-prose img { max-width: 100%; height: auto; border-radius: var(--lg-r); }
.lg-prose > :last-child { margin-bottom: 0; }

/* ---------- buttons + links ---------- */
.lg-ctas { display: flex; flex-wrap: wrap; gap: 12px; }
.lg-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 24px;
    border-radius: var(--lg-r);
    text-decoration: none;
    transition: gap var(--dur-fast, 180ms) var(--ease-out, ease);
}
.lg-btn:hover { gap: 14px; }
.lg-btn--go { background: var(--jb-accent); color: #1a1a1a; }
.lg-btn--go:hover { background: var(--jb-accent-deep); color: #1a1a1a; }
.lg-btn--ghost { border: 1px solid var(--lg-line2); color: var(--ink); }
.lg-btn--ghost:hover { border-color: var(--ink); }
.lg-btn--ghost-dark { border: 1px solid #2f4a60; color: #fff; }
.lg-btn--ghost-dark:hover { border-color: #fff; color: #fff; }
.lg-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--jb-blue);
    text-decoration: none;
    transition: gap var(--dur-fast, 180ms) var(--ease-out, ease);
}
.lg-link:hover { gap: 11px; color: var(--jb-blue-deep); }

/* ---------- preview banner + crumbs ---------- */
.lg-preview {
    background: var(--jb-accent);
    color: #1a1a1a;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 10px 40px;
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}
.lg-preview a { color: #1a1a1a; font-weight: 800; margin-left: auto; }
.lg-crumbs {
    padding-top: 28px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    font-size: 0.78rem;
    color: var(--lg-muted);
}
.lg-crumbs a { color: var(--lg-muted); text-decoration: none; }
.lg-crumbs a:hover { color: var(--jb-blue); }
.lg-crumbs [aria-current] { color: var(--ink-2); }

/* ---------- hero ---------- */
.lg-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: 56px;
    align-items: center;
    padding-top: 40px;
    padding-bottom: 56px;
}
.lg-hero--noimg { grid-template-columns: minmax(0, 1fr); }
.lg-hero--noimg .lg-intro { max-width: 720px; }
.lg-meta { margin: 0; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; color: var(--lg-muted); }
.lg-meta__sep { color: var(--lg-line2); }
.lg-tag { background: var(--jb-blue); color: #fff; padding: 4px 8px; border-radius: 2px; }
.lg-byline {
    margin: 30px 0 34px;
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: var(--lg-muted);
}
.lg-byline b { color: var(--ink); font-weight: 600; }
.lg-hero__media {
    margin: 0;
    position: relative;
    aspect-ratio: 4 / 5;
    background: var(--lg-raise);
    border: 1px solid var(--line);
    border-radius: 4px;
    overflow: hidden;
}
.lg-hero__img { width: 100%; height: 100%; object-fit: cover; display: block; }
.lg-hero__chip {
    position: absolute;
    left: 20px;
    bottom: 20px;
    background: var(--paper);
    border: 1px solid var(--line);
    padding: 12px 16px;
    font-size: 0.78rem;
    line-height: 1.5;
    color: var(--ink-2);
}
.lg-hero__chip span {
    display: block;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--jb-blue);
}

/* ---------- at a glance ---------- */
.lg-facts {
    background: var(--lg-raise);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}
.lg-facts__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.lg-facts__grid--1 { grid-template-columns: minmax(0, 1fr); }
.lg-facts__grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.lg-facts__grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.lg-fact { padding: 26px 24px 26px 0; margin-right: 24px; border-right: 1px solid var(--line); }
.lg-fact:last-child { border-right: 0; margin-right: 0; }
.lg-fact p { margin: 0; }
.lg-fact__k { color: var(--lg-muted); }
.lg-fact__v { font-size: 1.4rem; font-weight: 700; letter-spacing: -0.02em; margin-top: 6px !important; }
.lg-fact__s { font-size: 0.8rem; color: var(--ink-2); margin-top: 4px !important; }

/* ---------- body: contents + main ---------- */
.lg-body {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
    padding-top: 64px;
    padding-bottom: 40px;
}
.lg-body--solo { grid-template-columns: minmax(0, 860px); }
.lg-toc { position: sticky; top: 24px; }
.lg-toc__h { margin: 0; padding-bottom: 12px; border-bottom: 1px solid var(--line); color: var(--lg-muted); }
.lg-toc__list { list-style: none; margin: 0; padding: 0; }
.lg-toc__list a {
    display: flex;
    gap: 12px;
    padding: 11px 0;
    border-bottom: 1px solid var(--line);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--ink-2);
    text-decoration: none;
    transition: color var(--dur-fast, 180ms);
}
.lg-toc__list a span { font-size: 0.72rem; color: var(--lg-muted); width: 18px; flex: none; padding-top: 1px; }
.lg-toc__list a:hover, .lg-toc__list a.is-on { color: var(--ink); }
.lg-toc__list a.is-on { font-weight: 700; }
.lg-toc__list a.is-on span { color: var(--jb-blue); }
.lg-toc__bar { margin-top: 22px; height: 3px; background: var(--line); position: relative; }
.lg-toc__bar span { position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: var(--jb-blue); transition: width 120ms linear; }
.lg-toc__pct { font-size: 0.72rem; color: var(--lg-muted); margin: 8px 0 0; }

.lg-block { margin: 0 0 72px; scroll-margin-top: 24px; }
.lg-block:last-child { margin-bottom: 0; }

/* image + text */
.lg-it { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; align-items: center; }
.lg-it--right .lg-it__media { order: 2; }
.lg-it--single { grid-template-columns: minmax(0, 1fr); }
.lg-it__media, .lg-figure { margin: 0; }
.lg-it__img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; border: 1px solid var(--line); border-radius: 4px; }
.lg-it .lg-link { margin-top: 16px; }

/* compare table */
.lg-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 4px; }
.lg-table-wrap:focus-visible { outline: 2px solid var(--jb-blue); outline-offset: 2px; }
.lg-table { width: 100%; min-width: 560px; border-collapse: collapse; font-size: 0.9rem; }
.lg-table thead tr { background: var(--lg-raise); text-align: left; }
.lg-table thead th {
    padding: 14px 18px;
    font-size: 0.64rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--lg-muted);
}
.lg-table tbody tr { border-top: 1px solid var(--line); }
.lg-table tbody th { padding: 14px 18px; text-align: left; font-weight: 600; color: var(--ink); }
.lg-table td { padding: 14px 18px; color: var(--ink-2); }
.lg-dash { color: var(--ink-4); }

/* callout */
.lg-callout {
    display: flex;
    gap: 16px;
    background: var(--lg-callout-bg);
    border: 1px solid var(--lg-callout-line);
    border-radius: 4px;
    padding: 22px 24px;
}
.lg-callout__ico { color: var(--jb-blue); font-size: 1.2rem; margin-top: 2px; }
.lg-callout__k { margin: 0 0 6px; color: var(--jb-blue); }
.lg-callout__t { font-size: 0.95rem; line-height: 1.65; color: var(--ink); }
.lg-callout__t p { margin: 0 0 10px; }
.lg-callout__t p:last-child { margin: 0; }

/* product strip */
.lg-shop { padding: 28px; border: 1px solid var(--line); border-radius: 4px; background: var(--lg-raise); }
.lg-shop__head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.lg-shop__k { margin: 0; color: var(--lg-muted); }
.lg-shop__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.lg-prod {
    display: flex;
    flex-direction: column;
    background: var(--lg-card);
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 12px;
    color: var(--ink);
    text-decoration: none;
    transition: border-color var(--dur-fast, 180ms);
}
.lg-prod:hover { border-color: var(--jb-blue); }
.lg-prod__img { aspect-ratio: 1; background: var(--lg-raise); display: block; overflow: hidden; }
.lg-prod__img img { width: 100%; height: 100%; object-fit: contain; display: block; }
.lg-prod__name { font-size: 0.85rem; font-weight: 600; line-height: 1.35; margin-top: 10px; }
.lg-prod__price { font-size: 0.78rem; color: var(--lg-muted); margin-top: 4px; }
.lg-prod__price .jb-vp { color: var(--ink); font-weight: 700; }

/* pull quote */
.lg-quote { margin-left: 0; margin-right: 0; }
.lg-quote blockquote {
    margin: 0;
    font-size: clamp(1.4rem, 2.4vw, 1.8rem);
    line-height: 1.3;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--ink);
    quotes: "\201C" "\201D";
}
.lg-quote blockquote::before { content: open-quote; color: var(--jb-blue); }
.lg-quote blockquote::after  { content: close-quote; color: var(--jb-blue); }
.lg-quote figcaption { margin-top: 12px; font-size: 0.8rem; color: var(--lg-muted); }

/* FAQ */
.lg-faq__list { border-top: 1px solid var(--line); }
.lg-faq__item { border-bottom: 1px solid var(--line); }
.lg-faq__item summary {
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 20px 0;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink);
}
.lg-faq__item summary::-webkit-details-marker { display: none; }
.lg-faq__item summary:focus-visible { outline: 2px solid var(--jb-blue); outline-offset: 2px; }
.lg-faq__sign::before { content: '+'; font-size: 1.3rem; color: var(--jb-blue); font-weight: 500; }
.lg-faq__item[open] .lg-faq__sign::before { content: '\2212'; }
.lg-faq__a { padding: 0 0 20px; max-width: 640px; font-size: 0.95rem; line-height: 1.7; color: var(--ink-2); }
.lg-faq__a p { margin: 0 0 10px; }
.lg-faq__a p:last-child { margin: 0; }

/* full-width image */
.lg-figure__img { width: 100%; height: auto; display: block; border: 1px solid var(--line); border-radius: 4px; }
.lg-figure figcaption { margin-top: 10px; font-size: 0.8rem; color: var(--lg-muted); }

/* ---------- closing band ---------- */
.lg-close { background: var(--jb-navy); color: #fff; margin-top: 72px; }
.lg-close__in {
    padding-top: 64px;
    padding-bottom: 64px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}
.lg-close p { margin: 0; }
.lg-close__k { color: var(--jb-blue); }
.lg-close__h { font-size: clamp(2rem, 3.6vw, 2.75rem); font-weight: 800; letter-spacing: -0.035em; line-height: 1.05; margin-top: 10px !important; }
.lg-close__s { color: #a9b8c4; font-size: 1rem; margin-top: 12px !important; }

/* ---------- more guides ---------- */
.lg-more { padding-top: 56px; padding-bottom: 72px; }
.lg-more__k { margin: 0 0 16px; color: var(--lg-muted); }
.lg-more__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.lg-more__card {
    display: block;
    padding: 18px 0;
    border-top: 2px solid var(--ink);
    color: var(--ink);
    text-decoration: none;
}
.lg-more__card:hover { border-top-color: var(--jb-blue); }
.lg-more__tag { display: block; color: var(--jb-blue); }
.lg-more__t { display: block; font-size: 1.05rem; font-weight: 700; letter-spacing: -0.01em; margin-top: 6px; }

/* ---------- /learn index ---------- */
.lg-index__head { padding-top: 72px; padding-bottom: 48px; border-bottom: 1px solid var(--line); }
.lg-index__head .lg-h1 { margin-top: 16px; }
.lg-index__empty { padding-top: 48px; padding-bottom: 96px; color: var(--ink-2); }
.lg-feature {
    margin-top: 48px;
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    border: 1px solid var(--line);
    border-radius: 4px;
    overflow: hidden;
    color: var(--ink);
    text-decoration: none;
    transition: border-color var(--dur-fast, 180ms);
}
.lg-feature:hover { border-color: var(--jb-blue); }
.lg-feature--noimg { grid-template-columns: minmax(0, 1fr); }
.lg-feature__media { background: var(--lg-raise); min-height: 320px; display: block; }
.lg-feature__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.lg-feature__txt { padding: 40px; display: flex; flex-direction: column; justify-content: center; gap: 12px; }
.lg-feature__t { font-size: clamp(1.8rem, 3vw, 2.25rem); font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; }
.lg-feature__s { font-size: 0.95rem; line-height: 1.7; color: var(--ink-2); }
.lg-feature .lg-link { margin-top: 10px; }
.lg-index__all { padding-top: 48px; padding-bottom: 80px; }
.lg-index__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.lg-card { display: block; border-top: 2px solid var(--ink); padding-top: 18px; color: var(--ink); text-decoration: none; }
.lg-card:hover { border-top-color: var(--jb-blue); }
.lg-card__img { display: block; aspect-ratio: 16 / 10; background: var(--lg-raise); overflow: hidden; margin-bottom: 14px; }
.lg-card__img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.lg-card__meta { display: flex; justify-content: space-between; color: var(--jb-blue); }
.lg-card__meta span + span { color: var(--lg-muted); }
.lg-card__t { display: block; font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; margin-top: 6px; }

/* ---------- small screens ---------- */
@media (max-width: 900px) {
    .lg-wrap { padding: 0 16px; }
    .lg-preview { padding: 10px 16px; }
    .lg-hero { grid-template-columns: minmax(0, 1fr); gap: 32px; padding-top: 24px; }
    .lg-hero__media { aspect-ratio: 4 / 3; }
    .lg-facts__grid, .lg-facts__grid--3, .lg-facts__grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .lg-fact { border-right: 0; margin-right: 0; padding-right: 12px; border-bottom: 1px solid var(--line); }
    .lg-body, .lg-body--solo { grid-template-columns: minmax(0, 1fr); gap: 32px; padding-top: 40px; }
    .lg-toc { position: static; }
    .lg-toc__bar, .lg-toc__pct { display: none; }
    .lg-it, .lg-it--right { grid-template-columns: minmax(0, 1fr); gap: 20px; }
    .lg-it--right .lg-it__media { order: 0; }
    .lg-shop { padding: 16px; }
    .lg-shop__grid, .lg-more__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .lg-index__grid { grid-template-columns: minmax(0, 1fr); }
    .lg-feature { grid-template-columns: minmax(0, 1fr); }
    .lg-feature__media { min-height: 200px; }
    .lg-feature__txt { padding: 24px; }
    .lg-block { margin-bottom: 56px; }
}