/* Shared guide surfaces follow the public site's dark theme. */
[data-accent] { --guide-accent: #ff8abb; --guide-tint: #33212c; }
[data-accent="mint"] { --guide-accent: #7de7be; --guide-tint: #1d302b; }
[data-accent="amber"] { --guide-accent: #ffd36a; --guide-tint: #332d20; }
[data-accent="sky"] { --guide-accent: #8fcaff; --guide-tint: #222e3c; }
[data-accent="coral"] { --guide-accent: #ff9c83; --guide-tint: #352722; }
[data-accent="lilac"] { --guide-accent: #c8b0ff; --guide-tint: #2c2639; }
.kl-home-guides { background: var(--kl-dark); border-block: 1px solid var(--kl-border); }
.kl-home-guide-grid,
.kl-guide-library-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.kl-guide-tile {
    position: relative;
    min-width: 0;
    display: flex;
    flex-direction: column;
    padding: 25px;
    border: 1px solid var(--kl-border);
    border-radius: 8px;
    background: var(--kl-surface);
    transition: border-color .18s ease, transform .18s ease;
}
.kl-guide-tile:hover { border-color: var(--guide-accent); transform: translateY(-3px); }
.kl-guide-tile:focus-within { outline: 2px solid var(--guide-accent); outline-offset: 3px; }
.kl-guide-tile[hidden], .kl-guide-empty[hidden] { display: none; }
.kl-guide-tile-media {
    height: 190px;
    margin: -25px -25px 22px;
    padding: 14px;
    overflow: hidden;
    display: grid;
    /* Without explicit tracks the column grows to the image's natural width (640px)
       and pushes the card wider than small screens. */
    grid-template: minmax(0, 1fr) / minmax(0, 1fr);
    place-items: center;
    border-bottom: 1px solid var(--kl-border);
    border-radius: 7px 7px 0 0;
    background: var(--guide-tint);
}
.kl-guide-tile-media img { width: 100%; height: 100%; min-width: 0; min-height: 0; object-fit: contain; filter: drop-shadow(0 6px 9px rgba(0, 0, 0, .22)); }
.kl-guide-tile-media--fallback i { color: var(--guide-accent); font-size: 64px; }
.kl-guide-tile-top { display: flex; align-items: center; gap: 12px; min-height: 56px; margin-bottom: 22px; }
.kl-guide-topic-icon {
    flex: 0 0 54px;
    width: 54px;
    height: 54px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    background: var(--guide-tint);
    color: var(--guide-accent);
    font-size: 27px;
}
.kl-guide-topic { color: var(--guide-accent); font-size: .78rem; font-weight: 750; }
.kl-guide-tile-arrow { margin-left: auto; color: var(--kl-text-muted); font-size: 18px; }
.kl-guide-tile h2 { margin: 0 0 12px; font-size: 1.3rem; font-weight: 750; line-height: 1.35; letter-spacing: 0; }
.kl-guide-tile h2 a { color: var(--kl-text); text-decoration: none; }
.kl-guide-tile h2 a::after { position: absolute; inset: 0; content: ""; }
.kl-guide-tile > p { margin: 0 0 26px; color: var(--kl-text-muted); font-size: .91rem; line-height: 1.7; }
.kl-guide-tile-footer { margin-top: auto; display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-top: 17px; border-top: 1px solid var(--kl-border); font-size: .75rem; }
.kl-guide-tile-footer > span:first-child { color: var(--kl-text-muted); }
.kl-guide-tile-footer i { margin-right: 6px; }
.kl-guide-tile-read { color: var(--guide-accent); font-weight: 750; }
.kl-guide-tile-read i { margin: 0 0 0 6px; }
.kl-guide-library-head { padding: 32px 0 42px; border-bottom: 1px solid var(--kl-border); background: var(--kl-surface); }
.kl-guide-breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin: 0 0 32px; color: var(--kl-text-muted); font-size: .8rem; }
.kl-guide-breadcrumb a { color: var(--kl-text-muted); text-decoration: none; }
.kl-guide-breadcrumb a:hover { color: var(--kl-primary); }
.kl-guide-breadcrumb i { font-size: .6rem; }
.kl-guide-library-title { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.kl-guide-library-title > div:first-child { max-width: 760px; }
.kl-guide-library-title h1 { margin: 12px 0 16px; color: var(--kl-text); font-size: 3.5rem; font-weight: 800; line-height: 1.1; letter-spacing: 0; }
.kl-guide-library-title h1 > span { color: var(--kl-primary); }
.kl-guide-library-title p { max-width: 650px; margin: 0; color: var(--kl-text-muted); font-size: 1rem; line-height: 1.8; }
.kl-guide-library-count { display: grid; grid-template-columns: 1fr 60px; align-items: center; gap: 0 20px; border-left: 1px solid var(--kl-border); padding-left: 30px; flex: 0 0 auto; }
.kl-guide-library-count strong { color: #ffd36a; font-size: 3.5rem; line-height: 1; }
.kl-guide-library-count span { grid-column: 1; margin-top: 8px; color: var(--kl-text-muted); font-size: .8rem; }
.kl-guide-library-count i { grid-column: 2; grid-row: 1 / 3; color: #ffd36a; font-size: 42px; }
.kl-guide-library-body { padding-top: 32px; }
.kl-guide-library-toolbar { display: flex; align-items: flex-start; justify-content: space-between; gap: 22px; }
.kl-guide-topic-filters { display: flex; flex-wrap: wrap; gap: 8px; max-width: 800px; }
.kl-guide-topic-filters button { display: inline-flex; gap: 8px; align-items: center; min-height: 42px; padding: 9px 12px; border: 1px solid var(--kl-border); border-radius: 6px; background: var(--kl-surface); color: var(--kl-text-muted); font-size: .78rem; font-weight: 650; }
.kl-guide-topic-filters button span { font-size: .67rem; opacity: .7; }
.kl-guide-topic-filters button[aria-pressed="true"] { color: #fff; border-color: var(--kl-primary); background: #38213f; }
.kl-guide-topic-filters button:hover { color: var(--kl-text); border-color: #696171; }
.kl-guide-search { display: flex; align-items: center; gap: 10px; flex: 0 1 280px; min-width: 200px; padding: 0 13px; height: 44px; border: 1px solid var(--kl-border); border-radius: 6px; background: var(--kl-surface); color: var(--kl-text-muted); }
.kl-guide-search:focus-within { border-color: var(--kl-primary); }
.kl-guide-search input { width: 100%; min-width: 0; border: 0; outline: 0; color: var(--kl-text); background: transparent; font-size: .84rem; }
.kl-guide-search input::placeholder { color: var(--kl-text-muted); }
.kl-guide-results { margin: 22px 0 16px; color: var(--kl-text-muted); font-size: .8rem; }
.kl-guide-empty { padding: 60px 0; text-align: center; }
.kl-guide-empty > i { color: var(--kl-primary); font-size: 32px; }
.kl-guide-empty h2 { margin: 16px 0 8px; font-size: 1.35rem; }
.kl-guide-empty p { color: var(--kl-text-muted); }
.kl-guide-empty button { min-height: 44px; padding: 10px 18px; border: 1px solid var(--kl-primary); border-radius: 6px; color: var(--kl-text); background: var(--kl-surface); }
.kl-guide-reading .kl-guide-detail-head { padding: 32px 0 40px; background: var(--kl-surface); border-bottom: 1px solid var(--kl-border); }
.kl-guide-reading-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(240px, 320px); align-items: center; gap: 52px; }
.kl-guide-reading-hero-copy { min-width: 0; }
.kl-guide-reading-cover { width: 100%; max-width: 320px; height: 370px; margin: 0; padding: 16px; overflow: hidden; justify-self: end; box-sizing: border-box; display: grid; grid-template-rows: minmax(0, 1fr) auto; gap: 10px; background: var(--guide-tint); border: 1px solid var(--kl-border); border-radius: 8px; }
.kl-guide-reading-cover img { display: block; width: 100%; max-width: 100%; height: 100%; min-width: 0; min-height: 0; margin: auto; object-fit: contain; object-position: center; filter: drop-shadow(0 8px 12px rgba(0, 0, 0, .24)); }
.kl-guide-reading-cover figcaption { color: var(--kl-text-muted); font-size: .7rem; text-align: center; }
.kl-guide-reading-topic { display: inline-flex; align-items: center; gap: 10px; color: var(--guide-accent); font-size: .88rem; font-weight: 750; }
.kl-guide-reading-topic > i { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 6px; background: var(--guide-tint); font-size: 23px; }
.kl-guide-reading .kl-guide-detail-head h1 { max-width: 890px; margin: 20px 0 18px; color: var(--kl-text); font-family: inherit; font-size: 2.7rem; font-weight: 800; line-height: 1.16; letter-spacing: 0; }
.kl-guide-reading .kl-guide-lead { max-width: 810px; margin: 0 0 24px; color: var(--kl-text-muted); font-size: 1.07rem; line-height: 1.75; }
.kl-guide-reading .kl-guide-detail-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 22px; color: var(--kl-text-muted); font-size: .75rem; font-weight: 500; text-transform: none; }
.kl-guide-reading .kl-guide-detail-meta i { color: var(--guide-accent); }
.kl-guide-mobile-contents { display: none; }
.kl-guide-mobile-contents summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 44px; cursor: pointer; list-style: none; color: var(--kl-text); font-size: .85rem; font-weight: 650; }
.kl-guide-mobile-contents summary::-webkit-details-marker { display: none; }
.kl-guide-mobile-contents nav a { display: flex; align-items: baseline; gap: 12px; padding: 12px 0; color: var(--kl-text-muted); font-size: .83rem; text-decoration: none; }
.kl-guide-mobile-contents nav a span { color: var(--guide-accent); font-weight: 750; }
.kl-guide-reading .kl-guide-detail-layout { grid-template-columns: minmax(0, 760px) minmax(250px, 310px); justify-content: space-between; gap: 65px; padding-block: 46px 60px; }
.kl-guide-reading .kl-guide-article-body { color: #d5d1df; font-size: 1.03rem; line-height: 1.85; }
.kl-guide-reading .kl-guide-introduction { color: var(--kl-text); font-size: 1.12rem; line-height: 1.8; font-weight: 500; padding-bottom: 30px; margin-bottom: 0; border-bottom: 1px solid var(--kl-border); }
.kl-guide-reading .kl-guide-reading-step { padding: 30px 0; border-bottom: 1px solid var(--kl-border); scroll-margin-top: 120px; }
.kl-guide-step-heading { display: flex; align-items: baseline; gap: 15px; margin-bottom: 14px; }
.kl-guide-step-heading > span { color: var(--guide-accent); font-size: .85rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.kl-guide-reading .kl-guide-step-heading h2 { margin: 0; color: var(--kl-text); font-size: 1.42rem; font-weight: 750; line-height: 1.3; }
.kl-guide-reading-step p { margin: 0; }
.kl-guide-reading-step ul { margin: 16px 0 0; }
.kl-guide-reading-step li::marker { color: var(--guide-accent); }
.kl-guide-inline-visual { width: 100%; max-width: 100%; margin: 28px 0 4px; padding: 18px; overflow: hidden; box-sizing: border-box; display: grid; grid-template-columns: minmax(0, 1fr) 190px; align-items: center; gap: 22px; border: 1px solid var(--kl-border); border-radius: 8px; background: var(--guide-tint); }
.kl-guide-inline-visual > a { width: 100%; max-width: 430px; height: 270px; min-width: 0; overflow: hidden; justify-self: center; display: grid; place-items: center; }
.kl-guide-inline-visual img { display: block; width: 100%; max-width: 100%; height: 100%; max-height: 270px; margin: auto; object-fit: contain; object-position: center; filter: drop-shadow(0 7px 10px rgba(0, 0, 0, .22)); }
.kl-guide-inline-visual figcaption { min-width: 0; display: grid; gap: 7px; }
.kl-guide-inline-visual figcaption span { color: var(--guide-accent); font-size: .72rem; font-weight: 750; text-transform: uppercase; }
.kl-guide-inline-visual figcaption strong { color: var(--kl-text); font-size: 1rem; line-height: 1.45; }
.kl-guide-reading .kl-guide-note { margin-top: 30px; border-left: 3px solid var(--guide-accent); background: var(--guide-tint); color: var(--kl-text); }
.kl-guide-reading .kl-guide-note i { color: var(--guide-accent); }
.kl-guide-reading .kl-guide-note p { color: #d5d1df; font-size: .93rem; }
.kl-guide-reading .kl-guide-reading-sidebar { padding: 0; border: 0; background: transparent; top: 112px; }
.kl-guide-contents { border-bottom: 1px solid var(--kl-border); padding-bottom: 24px; margin-bottom: 24px; }
.kl-guide-reading-sidebar h2 { margin: 0 0 18px; color: var(--kl-text); font-size: .84rem; font-weight: 750; text-transform: none; }
.kl-guide-contents > a { display: flex; align-items: baseline; gap: 12px; padding: 10px 0; color: var(--kl-text-muted); font-size: .85rem; line-height: 1.5; text-decoration: none; }
.kl-guide-contents > a span { color: var(--guide-accent); font-size: .72rem; font-weight: 750; }
.kl-guide-contents > a:hover { color: var(--kl-text); }
.kl-guide-reading-toolkit { padding: 22px; background: var(--guide-tint); border-radius: 6px; }
.kl-guide-reading-toolkit > i { color: var(--guide-accent); font-size: 28px; }
.kl-guide-reading-toolkit h2 { margin: 14px 0 8px; font-size: 1.1rem; }
.kl-guide-reading-toolkit p { color: var(--kl-text-muted); font-size: .85rem; line-height: 1.65; }
.kl-guide-reading-toolkit a { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--guide-accent); font-size: .82rem; font-weight: 750; text-decoration: none; }
.kl-guide-sidebar-related { margin-top: 28px; }
.kl-guide-sidebar-related > a { display: flex; align-items: flex-start; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--kl-border); color: var(--kl-text); text-decoration: none; }
.kl-guide-sidebar-related > a > i:first-child { color: var(--guide-accent); font-size: 18px; }
.kl-guide-sidebar-related > a > i:last-child { margin-left: auto; color: var(--kl-text-muted); font-size: 12px; }
.kl-guide-sidebar-related strong { display: block; font-size: .82rem; line-height: 1.5; font-weight: 600; }
.kl-guide-sidebar-related small { display: block; margin-top: 6px; color: var(--kl-text-muted); font-size: .7rem; }
.kl-guide-reading .kl-guide-sidebar > .kl-guide-back { display: flex; align-items: center; gap: 9px; margin-top: 22px; padding: 0; border: 0; color: var(--kl-primary); font-size: .82rem; }
.kl-guide-reading-worksheets { background: var(--kl-surface); border-top: 1px solid var(--kl-border); scroll-margin-top: 110px; }
.kl-guide-reading-worksheets header { display: flex; align-items: end; justify-content: space-between; flex-wrap: wrap; gap: 20px; margin-bottom: 26px; }
.kl-guide-reading-worksheets header h2 { margin: 9px 0; color: var(--kl-text); font-size: 1.9rem; }
.kl-guide-reading-worksheets header p { margin: 0; color: var(--kl-text-muted); }
.kl-guide-reading-worksheets .kl-guide-worksheet-grid { gap: 24px; }
.kl-guide-reading-worksheets .kl-guide-worksheet-grid > a { color: var(--kl-text); }
.kl-guide-reading-worksheets .kl-guide-worksheet-grid > a > div { position: relative; background: #cfece0; border-radius: 6px; height: 270px; padding: 16px; }
.kl-guide-reading-worksheets .kl-guide-worksheet-grid > a:nth-child(3n+2) > div { background: #f8dc9d; }
.kl-guide-reading-worksheets .kl-guide-worksheet-grid > a:nth-child(3n+3) > div { background: #e3d5f4; }
.kl-guide-reading-worksheets .kl-guide-worksheet-grid > a > div > i { position: absolute; top: 10px; right: 10px; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 5px; background: var(--kl-dark); color: var(--kl-text); }
.kl-guide-reading-worksheets .kl-guide-worksheet-grid h3 { margin: 15px 0 5px; font-size: 1rem; line-height: 1.4; }
.kl-guide-reading-worksheets .kl-guide-worksheet-grid span { color: var(--kl-text-muted); }
.kl-worksheet-related-guides {
    position: relative;
    overflow: hidden;
    background: var(--kl-dark);
    border-block: 1px solid var(--kl-border);
}
.kl-worksheet-related-guides::before {
    position: absolute;
    inset: 0 auto 0 0;
    width: 4px;
    background: var(--kl-primary);
    content: "";
}
.kl-worksheet-related-guides .kl-related-guides-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 28px;
    max-width: none;
    margin-bottom: 28px;
}
.kl-worksheet-related-guides .kl-related-guides-head > div { max-width: 720px; }
.kl-worksheet-related-guides .kl-related-guides-head h2 {
    margin: 9px 0 10px;
    color: var(--kl-text);
    font-size: 2rem;
    line-height: 1.2;
    letter-spacing: 0;
}
.kl-worksheet-related-guides .kl-related-guides-head p {
    margin: 0;
    color: var(--kl-text-muted);
    line-height: 1.7;
}
.kl-related-guides-all {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    min-height: 44px;
    flex: 0 0 auto;
    padding: 10px 14px;
    border: 1px solid var(--kl-border);
    border-radius: 6px;
    color: var(--kl-text);
    background: var(--kl-surface);
    font-size: .8rem;
    font-weight: 750;
    text-decoration: none;
}
.kl-related-guides-all:hover { border-color: var(--kl-primary); color: var(--kl-primary); }
.kl-related-guides-grid--shared { gap: 20px; }
.kl-related-guides-grid--shared > .kl-guide-tile {
    min-width: 0;
    color: inherit;
    text-decoration: none;
}
@media (max-width: 1000px) {
    .kl-guide-library-toolbar { flex-direction: column; }
    .kl-guide-search { flex: none; width: 100%; max-width: 420px; }
    .kl-guide-library-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .kl-guide-reading .kl-guide-detail-layout { grid-template-columns: minmax(0, 1fr) 260px; gap: 35px; }
    .kl-guide-reading-hero { grid-template-columns: minmax(0, 1fr) 260px; gap: 30px; }
}
@media (max-width: 760px) {
    .kl-home-guide-grid { grid-template-columns: minmax(0, 1fr); }
    .kl-guide-library-title h1 { font-size: 2.6rem; }
    .kl-guide-library-count { padding-left: 18px; grid-template-columns: 1fr; }
    .kl-guide-library-count strong { font-size: 2.7rem; }
    .kl-guide-library-count i { display: none; }
    .kl-guide-library-count span { max-width: 100px; }
    .kl-guide-reading .kl-guide-detail-head h1 { font-size: 2rem; }
    .kl-guide-reading-hero { grid-template-columns: 1fr; }
    .kl-guide-reading-cover { max-width: 100%; height: 340px; justify-self: stretch; }
    .kl-guide-reading .kl-guide-detail-layout { display: flex; flex-direction: column; gap: 30px; }
    .kl-guide-reading-sidebar { width: 100%; }
    .kl-guide-reading .kl-guide-reading-sidebar { position: static; }
    .kl-guide-reading .kl-guide-detail-meta { flex-direction: row; }
    .kl-guide-mobile-contents { display: block; margin-top: 22px; padding: 4px 16px; border: 1px solid var(--kl-border); border-radius: 6px; }
    .kl-guide-reading-sidebar .kl-guide-contents { display: none; }
    .kl-guide-reading .kl-guide-note { padding: 18px; }
    .kl-guide-inline-visual { grid-template-columns: 1fr; }
    .kl-guide-inline-visual > a { height: 300px; }
    .kl-worksheet-related-guides .kl-related-guides-head { align-items: flex-start; flex-direction: column; }
    .kl-worksheet-related-guides .kl-related-guides-head h2 { font-size: 1.65rem; }
    .kl-related-guides-all { width: 100%; justify-content: space-between; }
}
@media (max-width: 560px) {
    .kl-guide-library-grid { grid-template-columns: minmax(0, 1fr); }
    .kl-guide-library-title { align-items: start; gap: 18px; }
    .kl-guide-library-title .kl-discovery-kicker { font-size: .65rem; line-height: 1.7; }
    .kl-guide-library-title h1 { font-size: 2.1rem; }
    .kl-guide-library-title p { font-size: .9rem; }
    .kl-guide-library-count { border: 0; padding: 0; }
    .kl-guide-library-count strong { font-size: 2rem; }
    .kl-guide-library-count span { max-width: 70px; font-size: .68rem; }
    .kl-guide-tile { padding: 22px; }
    .kl-guide-tile-media { height: 205px; margin: -22px -22px 20px; }
    .kl-guide-tile h2 { font-size: 1.22rem; }
    .kl-guide-reading .kl-guide-step-heading h2 { font-size: 1.24rem; }
    .kl-guide-reading .kl-guide-article-body { font-size: .97rem; }
    .kl-guide-topic-filters button { padding: 9px 10px; font-size: .74rem; }
    .kl-guide-reading-worksheets .kl-guide-worksheet-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
    .kl-guide-tile { transition: none; }
    .kl-guide-tile:hover { transform: none; }
}