/* ============================================================
   KeoDPO Knowledge Base
   Layered on top of site.css, reuses its tokens.
   ============================================================ */

.kb-main { padding-top: 0; }

.kb-shell {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ---------- breadcrumb ---------- */
.kb-crumbs {
    display: flex; flex-wrap: wrap; align-items: center; gap: .45rem;
    font-size: .78rem; color: var(--text-muted);
    padding-top: 7.5rem;
    letter-spacing: .01em;
}
.kb-crumbs a { color: var(--text-muted); text-decoration: none; }
.kb-crumbs a:hover { color: var(--accent); }
.kb-crumbs span[aria-hidden] { opacity: .45; }
.kb-crumbs .kb-crumb-current { color: var(--text-secondary); }

/* ---------- hero ---------- */
.kb-hero { padding: 2rem 0 2.5rem; border-bottom: 1px solid var(--border-color); }
.kb-eyebrow {
    display: inline-block; font-size: .72rem; font-weight: 600;
    letter-spacing: .12em; text-transform: uppercase; color: var(--accent);
    margin-bottom: 1rem;
}
.kb-hero h1 {
    font-size: clamp(1.85rem, 4vw, 3rem); line-height: 1.1;
    letter-spacing: -.02em; font-weight: 600; color: var(--text-primary);
    margin: 0 0 1.1rem; max-width: 22ch;
}
.kb-hero-wide h1 { max-width: 34ch; }
.kb-lede {
    font-size: 1.05rem; line-height: 1.65; color: var(--text-secondary);
    max-width: 68ch; margin: 0;
}
.kb-meta-line {
    margin-top: 1.4rem; font-size: .8rem; color: var(--text-muted);
    display: flex; flex-wrap: wrap; gap: 1.25rem;
}

/* ---------- search ---------- */
.kb-search { position: relative; margin: 2.25rem 0 0; max-width: 640px; }
.kb-search-field {
    display: flex; align-items: center; gap: .75rem;
    background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: 12px; padding: .2rem .95rem;
    box-shadow: var(--card-shadow); transition: border-color .18s, box-shadow .18s;
}
.kb-search-field:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-subtle); }
.kb-search-field svg { flex: 0 0 auto; color: var(--text-muted); }
.kb-search input {
    flex: 1 1 auto; border: 0; background: transparent; outline: none;
    font: inherit; font-size: .98rem; color: var(--text-primary);
    padding: .95rem 0;
}
.kb-search input::placeholder { color: var(--text-muted); }
.kb-search-clear {
    border: 0; background: transparent; cursor: pointer; padding: .35rem;
    color: var(--text-muted); border-radius: 6px; display: none;
}
.kb-search-clear:hover { color: var(--text-primary); background: var(--accent-subtle); }
.kb-search.is-active .kb-search-clear { display: block; }
.kb-search-hint { margin: .65rem 0 0; font-size: .8rem; color: var(--text-muted); }

.kb-results { margin: 1.5rem 0 0; }
.kb-results[hidden] { display: none; }
.kb-results-count {
    font-size: .8rem; color: var(--text-muted); margin: 0 0 .85rem;
    letter-spacing: .01em;
}
.kb-result-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; }
.kb-result {
    background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: 10px; transition: border-color .16s, transform .16s;
}
.kb-result:hover { border-color: var(--accent); transform: translateY(-1px); }
.kb-result a { display: block; padding: 1rem 1.15rem; text-decoration: none; }
.kb-result-q {
    display: block; font-size: .95rem; font-weight: 550; line-height: 1.45;
    color: var(--text-primary); margin-bottom: .3rem;
}
.kb-result mark { background: var(--accent-subtle); color: inherit; border-radius: 3px; padding: 0 .12em; }
.kb-result-cat { font-size: .73rem; color: var(--accent); letter-spacing: .04em; text-transform: uppercase; font-weight: 600; }
.kb-result-snip { display: block; font-size: .855rem; line-height: 1.6; color: var(--text-secondary); margin-top: .35rem; }
.kb-noresults { padding: 1.5rem; background: var(--bg-secondary); border: 1px dashed var(--border-color); border-radius: 10px; font-size: .9rem; color: var(--text-secondary); }
.kb-noresults strong { color: var(--text-primary); }

/* ---------- section scaffolding ---------- */
.kb-section { padding-top: 3.5rem; padding-bottom: 3.5rem; }
.kb-section + .kb-section { border-top: 1px solid var(--border-color); }
.kb-section-head { margin-bottom: 2rem; }
.kb-section-head h2 {
    font-size: clamp(1.3rem, 2.4vw, 1.75rem); font-weight: 600;
    letter-spacing: -.015em; color: var(--text-primary); margin: 0 0 .6rem;
}
.kb-section-head p { font-size: .95rem; line-height: 1.6; color: var(--text-secondary); max-width: 62ch; margin: 0; }

/* ---------- category grid ---------- */
.kb-cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1rem; }
.kb-cat {
    position: relative; display: flex; flex-direction: column;
    background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: 14px; padding: 1.5rem; text-decoration: none;
    box-shadow: var(--card-shadow);
    transition: transform .18s, box-shadow .18s, border-color .18s;
}
.kb-cat:hover { transform: translateY(-3px); box-shadow: var(--card-shadow-hover); border-color: var(--accent); }
.kb-cat-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.kb-cat-icon {
    width: 38px; height: 38px; border-radius: 10px; background: var(--accent-subtle);
    display: grid; place-items: center; color: var(--accent); flex: 0 0 auto;
}
.kb-cat-count { font-size: .74rem; font-weight: 600; color: var(--text-muted); letter-spacing: .04em; text-transform: uppercase; }
.kb-cat h3 { font-size: 1.02rem; font-weight: 600; line-height: 1.35; color: var(--text-primary); margin: 0 0 .5rem; letter-spacing: -.01em; }
.kb-cat p { font-size: .875rem; line-height: 1.6; color: var(--text-secondary); margin: 0 0 1.1rem; flex: 1 1 auto; }
.kb-cat-cta { font-size: .82rem; font-weight: 600; color: var(--accent); display: inline-flex; align-items: center; gap: .4rem; }
.kb-cat:hover .kb-cat-cta svg { transform: translateX(3px); }
.kb-cat-cta svg { transition: transform .18s; }

/* ---------- question list ---------- */
.kb-qlist { list-style: none; margin: 0; padding: 0; }
.kb-qlist li { border-bottom: 1px solid var(--border-color); }
.kb-qlist li:first-child { border-top: 1px solid var(--border-color); }
.kb-qlist a {
    display: flex; align-items: baseline; gap: 1rem;
    padding: 1.05rem .25rem; text-decoration: none;
    transition: background .16s, padding-left .16s;
}
.kb-qlist a:hover { background: var(--accent-subtle); padding-left: .8rem; }
.kb-qnum { flex: 0 0 2.4rem; font-size: .78rem; font-weight: 600; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.kb-qtext { flex: 1 1 auto; font-size: .95rem; line-height: 1.5; color: var(--text-primary); font-weight: 450; }
.kb-qlist a:hover .kb-qtext { color: var(--accent); }
.kb-qarrow { flex: 0 0 auto; color: var(--text-muted); opacity: 0; transition: opacity .16s, transform .16s; }
.kb-qlist a:hover .kb-qarrow { opacity: 1; transform: translateX(2px); color: var(--accent); }

.kb-group + .kb-group { margin-top: 2.75rem; }
.kb-group-title {
    font-size: .74rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
    color: var(--accent); margin: 0 0 .9rem;
}
.kb-group-title a { color: inherit; text-decoration: none; }
.kb-group-title a:hover { text-decoration: underline; }

/* ---------- article ---------- */
.kb-article-wrap { display: grid; grid-template-columns: minmax(0,1fr) 300px; gap: 4rem; align-items: start; padding-top: 2.5rem; padding-bottom: 4rem; }
.kb-article { min-width: 0; }
.kb-answer-card {
    background: var(--accent-subtle); border-left: 3px solid var(--accent);
    border-radius: 0 12px 12px 0; padding: 1.4rem 1.6rem; margin: 0 0 2.5rem;
}
.kb-answer-label { font-size: .7rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); margin: 0 0 .5rem; }
.kb-answer-card p:last-child { margin: 0; }
.kb-answer-card p { font-size: 1.05rem; line-height: 1.65; color: var(--text-primary); margin: 0 0 .75rem; font-weight: 450; }

.kb-block { margin: 0 0 2.25rem; }
.kb-block h2 {
    font-size: 1.15rem; font-weight: 600; letter-spacing: -.01em;
    color: var(--text-primary); margin: 0 0 .8rem;
    display: flex; align-items: center; gap: .6rem;
}
.kb-block h2::before {
    content: ""; width: 4px; height: 1.05em; border-radius: 2px;
    background: var(--accent); flex: 0 0 auto; opacity: .55;
}
.kb-block p { font-size: .975rem; line-height: 1.75; color: var(--text-secondary); margin: 0 0 1rem; }
.kb-block p:last-child { margin-bottom: 0; }
.kb-block strong { color: var(--text-primary); font-weight: 600; }

.kb-disclaimer {
    margin: 2.5rem 0 0; padding: 1.1rem 1.25rem; border: 1px solid var(--border-color);
    border-radius: 10px; background: var(--bg-secondary);
    font-size: .82rem; line-height: 1.65; color: var(--text-muted);
}

/* ---------- sidebar ---------- */
.kb-side { position: sticky; top: 6.5rem; display: grid; gap: 1.25rem; }
.kb-side-card {
    background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: 14px; padding: 1.35rem; box-shadow: var(--card-shadow);
}
.kb-side-title { font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--text-muted); margin: 0 0 .9rem; }
.kb-side-links { list-style: none; margin: 0; padding: 0; display: grid; gap: .1rem; }
.kb-side-links a {
    display: block; font-size: .875rem; line-height: 1.5; color: var(--text-secondary);
    text-decoration: none; padding: .5rem 0; border-bottom: 1px solid var(--border-color);
}
.kb-side-links li:last-child a { border-bottom: 0; }
.kb-side-links a:hover { color: var(--accent); }
.kb-side-cta { background: var(--text-primary); border-color: var(--text-primary); }
.kb-side-cta .kb-side-title { color: rgba(255,255,255,.6); }
.kb-side-cta p { font-size: .875rem; line-height: 1.6; color: rgba(255,255,255,.82); margin: 0 0 1.1rem; }
.kb-side-btn {
    display: inline-flex; align-items: center; gap: .5rem; width: 100%;
    justify-content: center; padding: .8rem 1rem; border-radius: 9px;
    background: var(--accent); color: #fff; border: 0; cursor: pointer;
    font: inherit; font-size: .88rem; font-weight: 600; text-decoration: none;
    transition: background .16s;
}
.kb-side-btn:hover { background: var(--accent-hover); }

/* ---------- prev / next ---------- */
.kb-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--border-color); }
.kb-pager a {
    display: block; padding: 1.1rem 1.25rem; border: 1px solid var(--border-color);
    border-radius: 12px; text-decoration: none; background: var(--bg-secondary);
    transition: border-color .16s, transform .16s;
}
.kb-pager a:hover { border-color: var(--accent); transform: translateY(-2px); }
.kb-pager-dir { display: block; font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--text-muted); margin-bottom: .4rem; }
.kb-pager-q { display: block; font-size: .9rem; line-height: 1.45; color: var(--text-primary); font-weight: 500; }
.kb-pager .kb-pager-next { text-align: right; }
.kb-pager-empty { border: 1px dashed var(--border-color); border-radius: 12px; }

/* ---------- key numbers table ---------- */
.kb-table-wrap { overflow-x: auto; border: 1px solid var(--border-color); border-radius: 12px; background: var(--bg-secondary); }
table.kb-table { width: 100%; border-collapse: collapse; font-size: .875rem; min-width: 560px; }
table.kb-table th, table.kb-table td { text-align: left; padding: .85rem 1.1rem; border-bottom: 1px solid var(--border-color); vertical-align: top; line-height: 1.55; }
table.kb-table th { font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); font-weight: 700; background: var(--accent-subtle); }
table.kb-table tr:last-child td { border-bottom: 0; }
table.kb-table td:first-child { color: var(--text-primary); font-weight: 500; width: 38%; }
table.kb-table td:nth-child(2) { color: var(--text-secondary); }
table.kb-table td:last-child { color: var(--text-muted); white-space: nowrap; font-size: .8rem; }

/* ---------- homepage teaser ---------- */
.kb-teaser-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: .75rem; margin-top: 1.75rem; }
.kb-chip {
    display: flex; align-items: center; justify-content: space-between; gap: .75rem;
    padding: .95rem 1.1rem; background: var(--bg-secondary);
    border: 1px solid var(--border-color); border-radius: 10px;
    text-decoration: none; font-size: .885rem; font-weight: 500;
    color: var(--text-primary); transition: border-color .16s, transform .16s, color .16s;
}
.kb-chip:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.kb-chip span:last-child { font-size: .74rem; color: var(--text-muted); font-weight: 600; }
.kb-chip:hover span:last-child { color: var(--accent); }
.kb-teaser-foot { margin-top: 1.75rem; display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
.kb-teaser-link {
    display: inline-flex; align-items: center; gap: .5rem; padding: .8rem 1.35rem;
    background: var(--accent); color: #fff; border-radius: 9px; text-decoration: none;
    font-size: .88rem; font-weight: 600; transition: background .16s;
}
.kb-teaser-link:hover { background: var(--accent-hover); }
.kb-teaser-note { font-size: .82rem; color: var(--text-muted); }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
    .kb-article-wrap { grid-template-columns: 1fr; gap: 2.5rem; }
    .kb-side { position: static; }
}
@media (max-width: 768px) {
    .kb-shell { padding: 0 1.25rem; }
    .kb-crumbs { padding-top: 6rem; font-size: .74rem; }
    .kb-section { padding-top: 2.5rem; padding-bottom: 2.5rem; }
    .kb-pager { grid-template-columns: 1fr; }
    .kb-pager .kb-pager-next { text-align: left; }
    .kb-qlist a { gap: .6rem; }
    .kb-qnum { flex-basis: 2rem; }
}

/* ---------- dark mode ---------- */
.dark-mode .kb-answer-card { background: rgba(0, 106, 177, .12); }
.dark-mode .kb-side-cta { background: #141414; border-color: rgba(255,255,255,.1); }
.dark-mode table.kb-table th { background: rgba(0, 106, 177, .12); }
.dark-mode .kb-result mark { background: rgba(0, 106, 177, .3); }

/* ---------- header room for the sixth navigation item ---------- */
@media (min-width: 769px) {
    .nav-links { gap: 1.6rem; flex-wrap: nowrap; }
    .nav-link { white-space: nowrap; }
}
@media (min-width: 769px) and (max-width: 1180px) {
    .nav-links { gap: 1.1rem; }
    .nav-link { font-size: 0.875rem; }
}