.help-knowledge-content {
    --knowledge-bg: #f6f9fd;
    --knowledge-panel: #ffffff;
    --knowledge-ink: #1f3f68;
    --knowledge-muted: #65758d;
    --knowledge-line: #d7e1ef;
    color: var(--knowledge-ink);
}

.help-knowledge-content * {
    box-sizing: border-box;
}

.help-knowledge-content .knowledge-layout {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
    width: 100%;
    margin: 0;
    padding: 18px;
    background: var(--knowledge-bg);
}

.help-knowledge-content .knowledge-sidebar {
    position: sticky;
    top: 18px;
}

.help-knowledge-content .meta-overview {
    padding: 20px;
    border: 1px solid var(--knowledge-line);
    border-radius: 16px;
    background: var(--knowledge-panel);
    box-shadow: 0 10px 30px rgba(31, 73, 125, 0.08);
}

.help-knowledge-content .overview-head {
    margin-bottom: 18px;
}

.help-knowledge-content .overview-head h2 {
    margin: 0;
    color: #173c78;
    font-size: 1.08rem;
    font-weight: 700;
}

.help-knowledge-content .overview-head p {
    margin: 5px 0 0;
    color: var(--knowledge-muted);
    font-size: .86rem;
    line-height: 1.45;
}

.help-knowledge-content .overview-grid {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.help-knowledge-content .overview-phase {
    margin: 13px 0 2px;
    padding: 0 3px;
    color: #7890ad;
    font-size: .7rem;
    font-weight: 800;
    letter-spacing: .08em;
}

.help-knowledge-content .overview-phase:first-child {
    margin-top: 2px;
}

.help-knowledge-content .overview-category-button,
.help-knowledge-content .overview-all-button {
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: 43px;
    padding: 9px 11px;
    border: 1px solid var(--knowledge-line);
    border-left: 4px solid var(--accent, #2e6db2);
    border-radius: 10px;
    background: #ffffff;
    color: #405a78;
    font: inherit;
    font-size: .84rem;
    font-weight: 650;
    line-height: 1.25;
    text-align: left;
    cursor: pointer;
    transition: border-color 120ms ease, background 120ms ease, transform 120ms ease;
}

.help-knowledge-content .overview-all-button {
    border-left-color: #173c78;
}

.help-knowledge-content .overview-category-button:hover,
.help-knowledge-content .overview-all-button:hover {
    border-color: var(--accent, #2e6db2);
    background: var(--soft, #edf4fc);
    transform: translateX(2px);
}

.help-knowledge-content .overview-category-button.active,
.help-knowledge-content .overview-all-button.active {
    border-color: var(--accent, #173c78);
    color: var(--accent, #173c78);
    background: var(--soft, #e8f0fb);
    box-shadow: inset 0 0 0 1px var(--accent, #173c78);
}

.help-knowledge-content .overview-category-button span,
.help-knowledge-content .overview-all-button span {
    flex: 0 0 auto;
    min-width: 26px;
    padding: 2px 6px;
    border-radius: 999px;
    color: #52677f;
    font-size: .72rem;
    text-align: center;
    background: #edf3fb;
}

.help-knowledge-content .knowledge-main {
    min-width: 0;
}

.help-knowledge-content .knowledge-toolbar {
    position: sticky;
    top: 0;
    z-index: 5;
    margin: 0 -8px 16px;
    padding: 8px;
    background: rgba(246, 249, 253, .96);
    backdrop-filter: blur(8px);
}

.help-knowledge-content .controls {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(230px, 310px);
    gap: 14px;
}

.help-knowledge-content .search,
.help-knowledge-content .select-wrap {
    display: flex;
    align-items: center;
    min-height: 52px;
    border: 1px solid var(--knowledge-line);
    border-radius: 13px;
    background: #ffffff;
    box-shadow: 0 8px 22px rgba(31, 73, 125, 0.06);
}

.help-knowledge-content .search {
    gap: 10px;
    padding: 0 15px;
}

.help-knowledge-content .search svg {
    flex: 0 0 auto;
    width: 19px;
    height: 19px;
    color: #2e6db2;
}

.help-knowledge-content .search input,
.help-knowledge-content .select-wrap select {
    width: 100%;
    border: 0;
    outline: 0;
    color: var(--knowledge-ink);
    font: inherit;
    background: transparent;
}

.help-knowledge-content .select-wrap {
    padding: 0 12px;
}

.help-knowledge-content .search:focus-within,
.help-knowledge-content .select-wrap:focus-within {
    border-color: #7aa3d5;
    box-shadow: 0 0 0 3px rgba(46, 109, 178, .12);
}

.help-knowledge-content .category-filters {
    display: none;
}

.help-knowledge-content .summary-row {
    display: flex;
    gap: 16px;
    align-items: center;
    justify-content: space-between;
    margin: 0 0 18px;
    padding: 0 3px;
}

.help-knowledge-content .results-summary {
    margin: 0;
    color: var(--knowledge-muted);
    font-size: .9rem;
}

.help-knowledge-content .reference-key,
.help-knowledge-content .reference {
    border-bottom: 1px solid #e2c766;
    border-radius: 3px;
    color: #5d4700;
    background: #fff5c8;
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
}

.help-knowledge-content .reference-key {
    padding: 3px 7px;
    font-size: .78rem;
    font-weight: 700;
    white-space: nowrap;
}

.help-knowledge-content .reference {
    padding: 1px 3px;
}

.help-knowledge-content .content-phase {
    display: inline-flex;
    margin: 30px 0 12px;
    padding: 7px 11px;
    border-radius: 999px;
    color: #ffffff;
    font-size: .74rem;
    font-weight: 800;
    letter-spacing: .07em;
    background: #173c78;
}

.help-knowledge-content .content-phase:first-child {
    margin-top: 0;
}

.help-knowledge-content .category-section {
    margin-bottom: 34px;
}

.help-knowledge-content .category-heading {
    display: flex;
    gap: 16px;
    align-items: baseline;
    justify-content: space-between;
    margin: 0;
    padding: 13px 16px;
    border: 1px solid var(--knowledge-line);
    border-left: 5px solid var(--accent);
    border-radius: 13px;
    color: var(--accent);
    font-size: 1.18rem;
    font-weight: 700;
    background: var(--soft);
}

.help-knowledge-content .category-heading span,
.help-knowledge-content .subcategory-heading span {
    color: var(--knowledge-muted);
    font-size: .78rem;
    font-weight: 500;
}

.help-knowledge-content .subcategory-section {
    margin-top: 18px;
}

.help-knowledge-content .subcategory-heading {
    display: flex;
    gap: 12px;
    align-items: baseline;
    justify-content: space-between;
    margin: 0 0 9px;
    padding: 0 5px;
    color: var(--accent);
    font-size: .86rem;
    font-weight: 700;
    letter-spacing: .025em;
    text-transform: uppercase;
}

.help-knowledge-content .knowledge-entry-list {
    display: grid;
    gap: 9px;
}

.help-knowledge-content .knowledge-entry {
    overflow: hidden;
    border: 1px solid var(--knowledge-line);
    border-radius: 14px;
    background: #ffffff;
    box-shadow: 0 8px 22px rgba(31, 73, 125, .055);
}

.help-knowledge-content .knowledge-entry[open] {
    border-color: var(--accent);
    box-shadow: 0 12px 28px rgba(31, 73, 125, .09);
}

.help-knowledge-content .knowledge-entry summary {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 34px;
    gap: 14px;
    align-items: center;
    padding: 15px 17px;
    cursor: pointer;
    list-style: none;
}

.help-knowledge-content .knowledge-entry summary::-webkit-details-marker {
    display: none;
}

.help-knowledge-content .knowledge-entry summary:hover {
    background: #f8fafe;
}

.help-knowledge-content .knowledge-entry[open] summary {
    background: var(--soft);
}

.help-knowledge-content .knowledge-entry-summary {
    min-width: 0;
}

.help-knowledge-content .knowledge-entry-title,
.help-knowledge-content .knowledge-entry-preview {
    display: block;
}

.help-knowledge-content .knowledge-entry-title {
    color: #1f3f68;
    font-size: .98rem;
    font-weight: 750;
    line-height: 1.35;
}

.help-knowledge-content .knowledge-entry-preview {
    margin-top: 4px;
    overflow: hidden;
    color: #708198;
    font-size: .82rem;
    line-height: 1.4;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.help-knowledge-content .knowledge-entry-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    color: #2e6db2;
    font-size: 1.15rem;
    background: #edf3fb;
    transition: transform 160ms ease, background 160ms ease;
}

.help-knowledge-content .knowledge-entry[open] .knowledge-entry-toggle {
    color: var(--accent);
    background: #ffffff;
    transform: rotate(45deg);
}

.help-knowledge-content .knowledge-entry-body {
    padding: 18px;
    border-top: 1px solid #e3eaf3;
    color: #52677f;
    font-size: .94rem;
    line-height: 1.68;
    overflow-wrap: anywhere;
    white-space: pre-line;
}

.help-knowledge-content .entry-figure {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin: 18px 0 0;
    padding-top: 4px;
    white-space: normal;
}

.help-knowledge-content .image-preview {
    display: block;
    overflow: hidden;
    width: 160px;
    padding: 0;
    border: 1px solid #c9d4e3;
    border-radius: 10px;
    background: #ffffff;
    cursor: zoom-in;
}

.help-knowledge-content .image-preview img {
    display: block;
    width: 100%;
    height: auto;
}

.help-knowledge-content .image-caption {
    max-width: 270px;
    padding-top: 2px;
    color: var(--knowledge-muted);
    font-size: .82rem;
    line-height: 1.4;
}

.help-knowledge-content .empty {
    padding: 32px;
    border: 1px solid var(--knowledge-line);
    border-radius: 14px;
    color: var(--knowledge-muted);
    text-align: center;
    background: #ffffff;
    box-shadow: 0 8px 22px rgba(31, 73, 125, .06);
}

.help-knowledge-content .knowledge-source {
    margin: 0;
    padding: 12px 18px 16px;
    border-top: 1px solid var(--knowledge-line);
    color: var(--knowledge-muted);
    font-size: .8rem;
    text-align: center;
    background: var(--knowledge-bg);
}

.help-knowledge-content .image-dialog {
    position: fixed;
    width: min(1024px, calc(100% - 40px));
    max-height: calc(100vh - 40px);
    padding: 42px 12px 12px;
    border: 0;
    border-radius: 12px;
    background: #ffffff;
    box-shadow: 0 20px 70px rgba(17, 27, 25, .35);
}

.help-knowledge-content .image-dialog::backdrop {
    background: rgba(20, 29, 38, .78);
}

.help-knowledge-content .image-dialog img {
    display: block;
    max-width: 100%;
    max-height: calc(100vh - 96px);
    margin: 0 auto;
    object-fit: contain;
}

.help-knowledge-content .dialog-close {
    position: absolute;
    top: 8px;
    right: 10px;
    min-height: 30px;
    padding: 4px 10px;
    border: 1px solid var(--knowledge-line);
    border-radius: 6px;
    color: var(--knowledge-ink);
    font: inherit;
    font-size: .82rem;
    background: #ffffff;
    cursor: pointer;
}

@media (max-width: 1000px) {
    .help-knowledge-content .knowledge-layout {
        grid-template-columns: 1fr;
    }

    .help-knowledge-content .knowledge-sidebar,
    .help-knowledge-content .knowledge-toolbar {
        position: static;
    }

    .help-knowledge-content .overview-grid {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .help-knowledge-content .overview-phase,
    .help-knowledge-content .overview-all-button {
        grid-column: 1 / -1;
    }
}

@media (max-width: 640px) {
    .help-knowledge-content .knowledge-layout {
        gap: 16px;
        padding: 10px;
    }

    .help-knowledge-content .overview-grid,
    .help-knowledge-content .controls {
        grid-template-columns: 1fr;
    }

    .help-knowledge-content .overview-phase,
    .help-knowledge-content .overview-all-button {
        grid-column: auto;
    }

    .help-knowledge-content .select-wrap {
        display: none;
    }

    .help-knowledge-content .knowledge-entry summary {
        padding: 13px 14px;
    }

    .help-knowledge-content .knowledge-entry-preview {
        white-space: normal;
    }

    .help-knowledge-content .knowledge-entry-body {
        padding: 15px;
    }
}