.knowledge-index-hero {
    padding: 72px 0 112px;
    background: linear-gradient(135deg, #e9f8f0, #f8fbfa);
}

.knowledge-index-hero h1 {
    max-width: 800px;
    margin: .18em 0;
}

.knowledge-index-hero p {
    max-width: 700px;
    margin: 20px 0 0;
    color: var(--muted);
    font-size: 19px;
}

.knowledge-index {
    padding-bottom: 88px;
}

.knowledge-search-panel {
    position: relative;
    z-index: 2;
    margin: -58px 0 52px;
    padding: 25px 28px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 18px 46px rgba(16, 32, 44, .09);
}

.knowledge-search-panel > label {
    display: block;
    margin-bottom: 9px;
    font-size: 13px;
}

.knowledge-search {
    position: relative;
}

.knowledge-search svg {
    position: absolute;
    top: 50%;
    left: 15px;
    width: 21px;
    height: 21px;
    color: #65766e;
    transform: translateY(-50%);
}

.knowledge-search input {
    margin: 0;
    padding: 15px 16px 15px 48px;
    border-color: #bfcfc7;
    font-size: 16px;
}

.knowledge-search input:focus {
    border-color: var(--accent);
    outline: 3px solid rgba(19, 183, 106, .13);
}

.knowledge-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 17px;
}

.knowledge-filters button {
    padding: 8px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: #f7f9f8;
    color: #45584f;
    font: inherit;
    font-size: 12px;
    font-weight: 750;
    cursor: pointer;
}

.knowledge-filters button:hover,
.knowledge-filters button.is-active {
    border-color: var(--accent);
    background: #e8f8f0;
    color: var(--accent-dark);
}

.knowledge-results-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 21px;
}

.knowledge-results-heading h2 {
    margin: 0;
}

.knowledge-results-heading span {
    color: var(--muted);
    font-size: 13px;
}

.knowledge-card-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.knowledge-card {
    display: flex;
    flex-direction: column;
    min-height: 275px;
    padding: 27px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 10px 28px rgba(16, 32, 44, .045);
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.knowledge-card:hover {
    border-color: #b9d8c8;
    box-shadow: 0 15px 36px rgba(16, 32, 44, .08);
    transform: translateY(-2px);
}

.knowledge-card[hidden] {
    display: none;
}

.knowledge-card > span {
    color: var(--accent-dark);
    font-size: 11px;
    font-weight: 850;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.knowledge-card h2 {
    margin: 10px 0;
    font-size: 22px;
    line-height: 1.25;
}

.knowledge-card h2 a {
    color: var(--ink);
}

.knowledge-card p {
    margin: 0 0 22px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.65;
}

.knowledge-card-link {
    margin-top: auto;
    font-size: 13px;
    font-weight: 800;
}

.knowledge-card-link b {
    margin-left: 4px;
}

.knowledge-empty {
    padding: 55px 20px;
    border: 1px dashed #c8d5cf;
    border-radius: 16px;
    text-align: center;
}

.knowledge-empty strong {
    font-size: 20px;
}

.knowledge-empty p {
    color: var(--muted);
}

.knowledge-empty button {
    border: 0;
    background: transparent;
    color: var(--accent-dark);
    font: inherit;
    font-weight: 800;
    cursor: pointer;
}

@media (max-width: 720px) {
    .knowledge-index-hero {
        padding: 48px 0 90px;
    }

    .knowledge-index-hero p {
        font-size: 16px;
    }

    .knowledge-search-panel {
        margin-top: -48px;
        padding: 20px 18px;
    }

    .knowledge-card-grid {
        grid-template-columns: 1fr;
    }

    .knowledge-card {
        min-height: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .knowledge-card {
        transition: none;
    }
}