/* Knowledge Q&A — scoped to .page-knowledge only.
   Uses homepage (--th-*) tokens; does not alter header/footer. */

.page-knowledge {
    --th-bg: #ffffff;
    --th-bg-soft: #f4f5f7;
    --th-ink: #101828;
    --th-ink-soft: #1f2937;
    --th-muted: #5c6570;
    --th-line: #e3e8ef;
    --th-navy: #0a1a3d;
    --th-accent: #1868c9;
    --th-radius: 4px;
    --th-rail-wide: 1400px;
    --th-ease: cubic-bezier(0.22, 1, 0.36, 1);
    --th-header-h: 68px;
    background: var(--th-bg);
    color: var(--th-ink);
}

.page-knowledge .know-visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.page-knowledge .know-rail {
    margin-inline: auto;
}
.page-knowledge .know-hero .know-rail,
.page-knowledge .know-rail--top {
    width: min(100% - 3rem, 720px);
    max-width: 720px;
}
.page-knowledge .know-rail--list,
.page-knowledge .know-suggest .know-rail {
    width: calc(100% - 3rem);
    max-width: 820px;
}

/* —— Hero —— */
.page-knowledge .know-hero {
    background: #fff;
    padding-block: 56px 0;
}
.page-knowledge .know-hero__eyebrow {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--th-muted);
    margin: 0 0 12px;
}
.page-knowledge .know-hero__title {
    margin: 0 0 12px;
    font-size: clamp(1.75rem, 2.6vw, 2.875rem); /* ~28–46 */
    font-weight: 700;
    line-height: 1.2;
    color: var(--th-navy);
    text-wrap: pretty;
    max-width: 18ch;
}
.page-knowledge .know-hero__lead {
    margin: 0 0 8px;
    font-size: 1.0625rem;
    line-height: 1.6;
    color: var(--th-ink-soft);
    max-width: 42rem;
}
.page-knowledge .know-hero__sub {
    margin: 0;
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--th-muted);
    max-width: 42rem;
}

/* —— Toolbar —— */
.page-knowledge .know-directory {
    padding-block: 28px 64px;
}
.page-knowledge .know-toolbar {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    margin: 0 0 8px;
}
.page-knowledge .know-search {
    position: relative;
    width: 100%;
    max-width: 560px;
}
.page-knowledge .know-search > svg {
    position: absolute;
    inset-inline-start: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--th-muted);
    pointer-events: none;
}
.page-knowledge .know-search input {
    width: 100%;
    height: 48px;
    box-sizing: border-box;
    font: inherit;
    font-size: 1rem;
    color: var(--th-ink);
    background: #fff;
    border: 1px solid var(--th-line);
    border-radius: var(--th-radius);
    padding: 0 44px;
    transition: border-color 160ms var(--th-ease), box-shadow 160ms var(--th-ease);
}
.page-knowledge .know-search input:focus {
    outline: none;
    border-color: var(--th-accent);
    box-shadow: 0 0 0 3px rgba(24, 104, 201, 0.18);
}
.page-knowledge .know-search input::placeholder { color: var(--th-muted); }
.page-knowledge .know-search__clear {
    display: none;
    position: absolute;
    inset-inline-end: 10px;
    top: 50%;
    transform: translateY(-50%);
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--th-muted);
    background: transparent;
    border: 0;
    border-radius: var(--th-radius);
    cursor: pointer;
}
.page-knowledge .know-search__clear svg { width: 18px; height: 18px; }
.page-knowledge .know-search__clear:hover { color: var(--th-ink); }
.page-knowledge .know-search__clear:focus-visible {
    outline: 2px solid var(--th-accent);
    outline-offset: 2px;
}
.page-knowledge .know-search.has-value .know-search__clear { display: inline-flex; }

.page-knowledge .know-cat-toggle {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    min-height: 48px;
    padding: 12px 14px;
    font: inherit;
    color: var(--th-ink);
    background: #fff;
    border: 1px solid var(--th-line);
    border-radius: 8px;
    cursor: pointer;
    text-align: right;
}
.page-knowledge .know-cat-toggle__text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    min-width: 0;
}
.page-knowledge .know-cat-toggle__label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--th-muted);
}
.page-knowledge .know-cat-toggle__value {
    color: var(--th-navy);
    font-weight: 700;
    font-size: 0.9375rem;
}
.page-knowledge .know-cat-toggle__chev {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--th-navy);
}
.page-knowledge .know-cat-toggle__chev svg {
    display: block;
    transition: transform 160ms ease;
}
.page-knowledge .know-cat-toggle[aria-expanded="true"] {
    border-color: var(--th-navy);
    border-bottom-color: transparent;
    border-radius: 8px 8px 0 0;
}
.page-knowledge .know-cat-toggle[aria-expanded="true"] .know-cat-toggle__chev svg {
    transform: rotate(180deg);
}
.page-knowledge .know-cat-toggle:focus-visible {
    outline: 2px solid var(--th-accent);
    outline-offset: 2px;
}

.page-knowledge .know-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.page-knowledge .know-filters.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    margin-top: 0;
    padding: 10px;
    background: #fff;
    border: 1px solid var(--th-navy);
    border-top: 0;
    border-radius: 0 0 8px 8px;
}

.page-knowledge .know-filter {
    display: inline-flex;
    align-items: center;
    gap: 0.35em;
    min-height: 40px;
    padding: 0.45rem 0.9rem;
    border-radius: 6px;
    border: 1px solid var(--th-line);
    background: #fff;
    color: var(--th-ink-soft);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 160ms var(--th-ease), border-color 160ms var(--th-ease), color 160ms var(--th-ease);
}
.page-knowledge .know-filter:hover {
    border-color: var(--th-accent);
    color: var(--th-accent);
}
.page-knowledge .know-filter:focus-visible {
    outline: 2px solid var(--th-accent);
    outline-offset: 2px;
}
.page-knowledge .know-filter.is-active {
    background: var(--th-navy);
    border-color: var(--th-navy);
    color: #fff;
}
.page-knowledge .know-filter.is-active:hover {
    color: #fff;
}
.page-knowledge .know-filter__count {
    font-size: 0.8125rem;
    font-weight: 600;
    opacity: 0.8;
}

.page-knowledge .know-results {
    display: none; /* results count removed — keep rule inert if markup reappears */
}

/* —— Question list —— */
.page-knowledge .knowledge-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin: 0;
    border-top: 1px solid var(--th-line);
}

.page-knowledge .knowledge-item {
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--th-line); /* always on — never toggle on open/close */
    border-radius: 0;
    overflow: visible;
    margin: 0;
    box-shadow: none;
    scroll-margin-top: calc(var(--th-header-h) + 12px);
}
.page-knowledge .knowledge-item.is-open,
.page-knowledge .knowledge-item:has(.knowledge-item__details[open]),
.page-knowledge .knowledge-item:has(.knowledge-item__details.is-open) {
    border-bottom: 1px solid var(--th-line); /* reinforce constant */
}
.page-knowledge .knowledge-item.is-hidden { display: none; }

.page-knowledge .knowledge-item__details { margin: 0; }

.page-knowledge .knowledge-item__summary {
    /* Grid (not flex) so components.css mobile flex-direction:column cannot stack rows */
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: flex-start;
    gap: 14px 18px;
    padding: 22px 0;
    min-height: 44px;
    cursor: pointer;
    list-style: none;
    background: transparent;
    transition: background-color 140ms var(--th-ease);
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}
.page-knowledge .knowledge-item__summary *,
.page-knowledge .knowledge-item__summary *::before,
.page-knowledge .knowledge-item__summary *::after {
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}
.page-knowledge .knowledge-item__summary::-webkit-details-marker { display: none; }
.page-knowledge .knowledge-item__summary::marker { content: ''; }
.page-knowledge .knowledge-item__summary:hover {
    background: rgba(16, 24, 40, 0.025);
}
.page-knowledge .knowledge-item__summary:focus {
    outline: none;
}
.page-knowledge .knowledge-item__summary:focus-visible {
    outline: 2px solid var(--th-accent);
    outline-offset: 2px;
    border-radius: 2px;
}

.page-knowledge .knowledge-item__num {
    flex-shrink: 0;
    display: inline-block;
    min-width: 1.5rem;
    width: auto;
    height: auto;
    margin: 0.2rem 0 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    font-size: 0.8125rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0;
    line-height: 1.4;
    color: var(--th-muted);
    text-align: center;
}

/* .knowledge-item__body removed from summary (invalid div-in-summary);
   question heading owns the former body flex stack (title + cat). */
.page-knowledge .knowledge-item__question {
    margin: 0;
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    font-size: 1.1875rem; /* ~19 */
    font-weight: 700;
    line-height: 1.4;
    color: var(--th-navy);
    overflow-wrap: anywhere;
    word-break: break-word;
}

.page-knowledge .knowledge-item__cat {
    display: inline-block;
    flex-shrink: 0;
    margin: 0;
    padding: 0;
    border-radius: 0;
    background: transparent;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--th-muted);
    white-space: normal;
    letter-spacing: 0;
}

.page-knowledge .knowledge-item__toggle {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    margin-top: 0.1rem;
    color: var(--th-navy);
}

.page-knowledge .knowledge-item__icon { display: block; }
.page-knowledge .knowledge-item__icon--minus { display: none; }
.page-knowledge .knowledge-item__details[open] .knowledge-item__icon--plus,
.page-knowledge .knowledge-item__details.is-open .knowledge-item__icon--plus { display: none; }
.page-knowledge .knowledge-item__details[open] .knowledge-item__icon--minus,
.page-knowledge .knowledge-item__details.is-open .knowledge-item__icon--minus { display: block; }

.page-knowledge .knowledge-item__answer {
    /* Mirror .th-topic__expand — only height is animated on this box */
    padding: 0;
    padding-inline-start: calc(1.5rem + 18px); /* align under question (num + gap) */
    max-width: 80ch;
    overflow: hidden;
    display: none; /* JS sets block while animating */
    border: 0; /* kill components.css border-top — layout-affecting during anim */
    border-top: 0;
}
.page-knowledge .knowledge-item__details.is-animating .knowledge-item__answer,
.page-knowledge .knowledge-item__details[open] .knowledge-item__answer {
    display: block;
}
.page-knowledge .knowledge-item__answer-inner {
    /* Match .th-topic__expand-inner: no layout-affecting borders/margins */
    position: relative;
    padding-bottom: 22px;
    padding-inline-end: calc(28px + 18px);
    padding-inline-start: 14px; /* room for decorative bar */
    margin: 0;
    border: 0; /* never animate borders — jump source */
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity 280ms var(--th-ease), transform 320ms var(--th-ease);
}
/* Decorative side bar — absolute, does not change box size; fades with parent opacity */
.page-knowledge .knowledge-item__answer-inner::before {
    content: "";
    position: absolute;
    inset-inline-start: 0;
    inset-block-start: 0;
    inset-block-end: 22px; /* stop above padding-bottom */
    width: 2px;
    background: var(--th-line);
    pointer-events: none;
}
.page-knowledge .knowledge-item__details.is-open .knowledge-item__answer-inner {
    opacity: 1;
    transform: translateY(0);
}
/* Keep summary padding constant — components.css shrinks padding-bottom on [open] */
.page-knowledge .knowledge-item__details[open] .knowledge-item__summary,
.page-knowledge .knowledge-item__details.is-open .knowledge-item__summary {
    padding: 22px 0;
}
.page-knowledge .knowledge-item__answer p {
    margin: 0;
    font-size: 1.0625rem; /* ~17 */
    line-height: 1.65;
    color: var(--th-ink-soft);
    overflow-wrap: anywhere;
    word-break: break-word;
}
.page-knowledge .knowledge-item__answer a {
    color: var(--th-accent);
    font-weight: 600;
}
.page-knowledge .knowledge-item__answer strong,
.page-knowledge .knowledge-item__answer b {
    color: var(--th-navy);
    font-weight: 700;
}


/* —— Empty —— */
.page-knowledge .know-empty {
    display: none;
    padding: 40px 0;
    text-align: right;
}
.page-knowledge .know-empty.is-visible {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
}
.page-knowledge .know-empty__text {
    margin: 0;
    font-size: 1rem;
    color: var(--th-ink-soft);
}
.page-knowledge .know-empty[hidden] { display: none !important; }

/* —— Closing CTA —— */
.page-knowledge .know-suggest {
    background: var(--th-bg-soft);
    padding-block: 48px;
}
.page-knowledge .know-suggest__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    max-width: 820px;
}
.page-knowledge .know-suggest__copy {
    flex: 1;
    min-width: 0;
    max-width: 36rem;
}
.page-knowledge .know-suggest__copy h2 {
    margin: 0 0 10px;
    font-size: clamp(1.25rem, 1.8vw, 1.5rem);
    font-weight: 700;
    line-height: 1.3;
    color: var(--th-navy);
}
.page-knowledge .know-suggest__copy p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--th-ink-soft);
}
.page-knowledge .know-suggest__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    flex-shrink: 0;
}
.page-knowledge .know-suggest .th-btn {
    min-height: 48px;
}

/* Kill old hero/cta bleed if leftover classes appear */
.page-knowledge .hero--compact::before { display: none !important; }
.page-knowledge .section--raised { background: transparent; }
.page-knowledge .cta-band {
    background: transparent !important;
    border-radius: 0;
    padding: 0;
}


@media (prefers-reduced-motion: reduce) {
    .page-knowledge .knowledge-item__answer-inner {
        transition: none;
        transform: none;
    }
}

@media (max-width: 900px) {
    .page-knowledge .know-hero .know-rail,
    .page-knowledge .know-rail--top {
        width: calc(100% - 2.75rem);
        max-width: none;
    }
    .page-knowledge .know-rail--list,
    .page-knowledge .know-suggest .know-rail {
        width: calc(100% - 2.75rem);
        max-width: none;
    }
    .page-knowledge .know-hero {
        padding-block: 36px 0;
    }
    .page-knowledge .know-hero__title {
        font-size: clamp(1.75rem, 6vw, 2.125rem); /* 28–34 */
        max-width: none;
    }
    .page-knowledge .know-directory {
        padding-block: 24px 48px;
    }
    .page-knowledge .know-search { max-width: none; }

    .page-knowledge .know-cat-toggle { display: flex; }
    .page-knowledge .know-filters {
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
    .page-knowledge .know-filters.is-open {
        display: flex;
        margin-top: -16px; /* cancel toolbar gap — attach to toggle */
    }
    .page-knowledge .know-toolbar { gap: 12px; }
    .page-knowledge .know-filters.is-open .know-filter {
        border-radius: 6px;
        width: 100%;
        box-sizing: border-box;
        justify-content: space-between;
    }
    .page-knowledge .know-filter {
        justify-content: space-between;
        width: 100%;
        box-sizing: border-box;
    }

    .page-knowledge .knowledge-item__summary {
        display: grid;
        grid-template-columns: auto minmax(0, 1fr) auto;
        flex-direction: row; /* beat components.css @640 column stack */
        align-items: flex-start;
        gap: 10px 12px;
        padding: 20px 0;
    }
    .page-knowledge .knowledge-item__question {
        font-size: 1.0625rem; /* ~17 */
    }
    .page-knowledge .knowledge-item__num {
        font-size: 0.75rem;
        min-width: 1.25rem;
    }
    .page-knowledge .knowledge-item__toggle {
        width: 28px;
        height: 28px;
    }
    .page-knowledge .knowledge-item__answer {
        padding-inline-start: 0;
        max-width: none;
    }
    .page-knowledge .knowledge-item__answer-inner {
        padding-bottom: 20px;
        padding-inline-start: 0;
        padding-inline-end: 0;
        border: 0;
    }
    .page-knowledge .knowledge-item__answer-inner::before {
        content: none; /* no side bar on mobile — match homepage */
    }
    .page-knowledge .knowledge-item__details[open] .knowledge-item__summary,
    .page-knowledge .knowledge-item__details.is-open .knowledge-item__summary {
        padding: 20px 0;
    }
    .page-knowledge .knowledge-item__answer p {
        font-size: 1rem; /* 16 */
    }

    .page-knowledge .know-suggest {
        padding-block: 40px;
    }
    .page-knowledge .know-suggest__inner {
        flex-direction: column;
        align-items: stretch;
        gap: 20px;
    }
    .page-knowledge .know-suggest__actions {
        flex-direction: column;
    }
    .page-knowledge .know-suggest .th-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .page-knowledge .know-hero .know-rail,
    .page-knowledge .know-rail--top,
    .page-knowledge .know-rail--list,
    .page-knowledge .know-suggest .know-rail {
        width: calc(100% - 2.5rem); /* ~20px */
        max-width: none;
    }
}