/* 案例营销页新增结构；与存量 cases.css 分层，避免覆盖正在进行的样式治理。 */
.case-hero-actions {
    margin-top: 20px;
}

.case-proof-section,
.case-customer-section,
.case-scenario-section,
.case-faq-section {
    padding: 80px 0;
}

.case-proof-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
    margin-top: 28px;
}

.case-proof-heading {
    margin: 0;
    color: var(--bfk-text-primary);
    font-size: 28px;
    line-height: 1.3;
    text-align: center;
}

.case-proof-card {
    padding: 28px 20px;
    text-align: center;
    background: var(--bfk-white);
    border: 1px solid var(--bfk-border);
    border-radius: var(--bfk-radius);
    box-shadow: var(--bfk-shadow-sm);
}

.case-proof-value {
    margin: 0 0 8px;
    color: var(--bfk-primary);
    font-size: 36px;
    line-height: 1.1;
    font-weight: 800;
}

.case-proof-label {
    margin: 0 0 6px;
    color: var(--bfk-text-primary);
    font-weight: 700;
}

.case-proof-note {
    margin: 0;
    color: var(--bfk-text-secondary);
    font-size: 13px;
}

.case-customer-groups {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.case-customer-group {
    padding: 24px;
    background: var(--bfk-white);
    border: 1px solid var(--bfk-border);
    border-radius: var(--bfk-radius);
}

.case-customer-group h3 {
    margin: 0 0 16px;
    color: var(--bfk-text-primary);
    font-size: 18px;
}

.case-customer-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.case-customer-list li {
    padding: 7px 11px;
    color: var(--bfk-text-secondary);
    background: var(--bfk-primary-soft);
    border-radius: 6px;
    font-size: 13px;
    line-height: 1.5;
}

.case-featured-section {
    padding: 80px 0;
}

.case-featured-section .case-filters {
    margin-top: 32px;
}

.case-card .case-desc strong {
    color: var(--bfk-text-primary);
}

.case-filter-status {
    margin: -20px 0 30px;
    text-align: center;
    color: var(--bfk-text-secondary);
    font-size: 14px;
}

.case-featured-section .case-grid {
    display: flex;
    align-items: stretch;
    gap: 24px;
    overflow-x: auto;
    padding: 4px 2px 18px;
    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
}

.case-featured-section .case-grid::-webkit-scrollbar {
    display: none;
}

.case-featured-section .case-card {
    flex: 0 0 calc((100% - 48px) / 3);
    height: auto;
    scroll-snap-align: start;
}

.case-carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 18px;
}

.case-carousel-controls.is-hidden {
    display: none;
}

.case-carousel-button {
    width: 42px;
    height: 42px;
    padding: 0;
    color: var(--bfk-primary);
    background: var(--bfk-white);
    border: 1px solid var(--bfk-border);
    border-radius: 50%;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.case-carousel-button:hover:not(:disabled) {
    color: var(--bfk-white);
    background: var(--bfk-primary);
    border-color: var(--bfk-primary);
}

.case-carousel-button:disabled {
    color: var(--bfk-text-secondary);
    background: var(--bfk-primary-soft);
    cursor: not-allowed;
    opacity: 0.55;
}

.case-carousel-page {
    min-width: 54px;
    color: var(--bfk-text-primary);
    text-align: center;
    font-weight: 700;
}

.case-carousel-hint {
    color: var(--bfk-text-secondary);
    font-size: 13px;
}

.case-scenario-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.case-scenario-card {
    display: flex;
    flex-direction: column;
    min-height: 220px;
    padding: 26px;
    background: var(--bfk-white);
    border: 1px solid var(--bfk-border);
    border-radius: var(--bfk-radius);
    box-shadow: var(--bfk-shadow-sm);
}

.case-scenario-card h3 {
    margin: 0 0 12px;
    color: var(--bfk-text-primary);
    font-size: 19px;
}

.case-scenario-card p {
    flex-grow: 1;
    margin: 0 0 18px;
    color: var(--bfk-text-secondary);
    line-height: 1.8;
}

.case-scenario-link {
    color: var(--bfk-primary);
    font-weight: 700;
}

.case-faq-list {
    max-width: 900px;
    margin: 40px auto 0;
}

.case-faq-item {
    margin-bottom: 14px;
    padding: 0 22px;
    background: var(--bfk-white);
    border: 1px solid var(--bfk-border);
    border-radius: var(--bfk-radius);
}

.case-faq-item summary {
    padding: 20px 34px 20px 0;
    color: var(--bfk-text-primary);
    font-weight: 700;
    cursor: pointer;
}

.case-faq-item p {
    margin: 0;
    padding: 0 0 20px;
    color: var(--bfk-text-secondary);
    line-height: 1.8;
}

.case-detail-hero {
    padding: 132px 0 72px;
    background: var(--bfk-hero-gradient);
}

.case-detail-hero .breadcrumb-nav {
    margin-bottom: 42px;
}

.case-detail-hero-copy {
    max-width: 900px;
}

.case-detail-eyebrow,
.case-detail-section-tag {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--bfk-primary);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.06em;
}

.case-detail-hero h1 {
    margin-bottom: 22px;
    color: var(--bfk-text-primary);
    font-size: 46px;
    line-height: 1.3;
}

.case-detail-hero-copy > p {
    max-width: 820px;
    margin: 0;
    color: var(--bfk-text-secondary);
    font-size: 18px;
    line-height: 1.9;
}

.case-detail-facts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(165px, 1fr));
    gap: 14px;
    margin: 38px 0 0;
}

.case-detail-facts div {
    padding: 18px;
    background: var(--bfk-white);
    border: 1px solid var(--bfk-border);
    border-radius: var(--bfk-radius);
}

.case-detail-facts dt {
    margin-bottom: 8px;
    color: var(--bfk-text-secondary);
    font-size: 12px;
    font-weight: 500;
}

.case-detail-facts dd {
    margin: 0;
    color: var(--bfk-text-primary);
    font-size: 15px;
    font-weight: 700;
    line-height: 1.6;
}

.case-detail-section,
.case-related-section {
    padding: 76px 0;
}

.case-detail-reading {
    max-width: 900px;
}

.case-detail-section h2,
.case-related-section h2 {
    margin-bottom: 24px;
    color: var(--bfk-text-primary);
    font-size: 32px;
    line-height: 1.4;
}

.case-detail-reading p {
    margin-bottom: 18px;
    color: var(--bfk-text-secondary);
    font-size: 17px;
    line-height: 1.95;
}

.case-detail-section-heading {
    max-width: 760px;
    margin-bottom: 34px;
}

.case-detail-section-heading > p {
    margin: -8px 0 0;
    color: var(--bfk-text-secondary);
    font-size: 16px;
    line-height: 1.85;
}

.case-detail-evidence {
    overflow: hidden;
    margin: 0;
    background: var(--bfk-white);
    border: 1px solid var(--bfk-border);
    border-radius: var(--bfk-radius);
    box-shadow: var(--bfk-shadow-sm);
}

.case-detail-evidence div {
    display: grid;
    grid-template-columns: minmax(140px, 0.32fr) 1fr;
}

.case-detail-evidence div + div {
    border-top: 1px solid var(--bfk-border);
}

.case-detail-evidence dt,
.case-detail-evidence dd {
    margin: 0;
    padding: 18px 22px;
    line-height: 1.75;
}

.case-detail-evidence dt {
    color: var(--bfk-text-primary);
    background: var(--bfk-primary-soft);
    font-weight: 700;
}

.case-detail-evidence dd {
    color: var(--bfk-text-secondary);
}

.case-detail-needs,
.case-detail-results {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.case-detail-needs li,
.case-detail-results li {
    position: relative;
    min-height: 130px;
    padding: 24px 24px 24px 58px;
    color: var(--bfk-text-primary);
    background: var(--bfk-white);
    border: 1px solid var(--bfk-border);
    border-radius: var(--bfk-radius);
    box-shadow: var(--bfk-shadow-sm);
    font-size: 16px;
    line-height: 1.8;
}

.case-detail-needs li::before,
.case-detail-results li::before {
    position: absolute;
    top: 25px;
    left: 24px;
    display: grid;
    width: 24px;
    height: 24px;
    place-items: center;
    color: var(--bfk-white);
    background: var(--bfk-primary);
    border-radius: 50%;
    content: "✓";
    font-size: 12px;
    font-weight: 700;
}

.case-detail-workflow {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.case-detail-step {
    padding: 28px;
    background: var(--bfk-white);
    border: 1px solid var(--bfk-border);
    border-radius: var(--bfk-radius);
    box-shadow: var(--bfk-shadow-sm);
}

.case-detail-step > span {
    display: block;
    margin-bottom: 18px;
    color: var(--bfk-primary);
    font-size: 30px;
    font-weight: 800;
}

.case-detail-step h3 {
    margin-bottom: 12px;
    color: var(--bfk-text-primary);
    font-size: 19px;
}

.case-detail-step p {
    margin: 0;
    color: var(--bfk-text-secondary);
    line-height: 1.8;
}

.case-detail-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 34px;
}

.case-related-section {
    background: var(--bfk-white);
}

.case-related-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.case-related-card {
    display: flex;
    flex-direction: column;
    min-height: 270px;
    padding: 26px;
    background: var(--bfk-white);
    border: 1px solid var(--bfk-border);
    border-radius: var(--bfk-radius);
    box-shadow: var(--bfk-shadow-sm);
}

.case-related-card > span {
    margin-bottom: 12px;
    color: var(--bfk-primary);
    font-size: 13px;
    font-weight: 700;
}

.case-related-card h3 {
    margin-bottom: 12px;
    font-size: 19px;
    line-height: 1.5;
}

.case-related-card h3 a {
    color: var(--bfk-text-primary);
}

.case-related-card p {
    flex-grow: 1;
    color: var(--bfk-text-secondary);
    font-size: 14px;
    line-height: 1.8;
}

.case-detail-back {
    margin-top: 34px;
    text-align: center;
}

.case-detail-back a {
    color: var(--bfk-primary);
    font-weight: 700;
}

.case-detail-faq-list {
    max-width: 900px;
}

@media (max-width: 991px) {
    .case-proof-grid,
    .case-scenario-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .case-featured-section .case-card {
        flex-basis: calc((100% - 24px) / 2);
    }

    .case-detail-facts {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .case-detail-needs,
    .case-detail-results,
    .case-detail-workflow,
    .case-related-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 767px) {
    .case-proof-section,
    .case-customer-section,
    .case-featured-section,
    .case-scenario-section,
    .case-faq-section {
        padding: 56px 0;
    }

    .case-customer-groups {
        grid-template-columns: 1fr;
    }

    .case-detail-hero {
        padding: 108px 0 54px;
    }

    .case-detail-hero h1 {
        font-size: 32px;
    }

    .case-detail-hero-copy > p {
        font-size: 16px;
    }

    .case-detail-section,
    .case-related-section {
        padding: 56px 0;
    }

    .case-detail-section h2,
    .case-related-section h2 {
        font-size: 26px;
    }

    .case-detail-needs,
    .case-detail-results,
    .case-detail-workflow,
    .case-related-grid {
        grid-template-columns: 1fr;
    }

    .case-detail-evidence div {
        grid-template-columns: 1fr;
    }

    .case-detail-evidence dd {
        padding-top: 14px;
    }
}

@media (max-width: 575px) {
    .case-proof-grid,
    .case-scenario-grid {
        grid-template-columns: 1fr;
    }

    .case-proof-card,
    .case-customer-group,
    .case-scenario-card {
        padding: 20px;
    }

    .case-proof-value {
        font-size: 32px;
    }

    .case-featured-section .case-card {
        flex-basis: 100%;
    }

    .case-carousel-hint {
        display: none;
    }

    .case-detail-facts {
        grid-template-columns: 1fr;
    }

    .case-detail-needs li,
    .case-detail-results li,
    .case-detail-step,
    .case-related-card {
        padding: 22px;
    }

    .case-detail-needs li,
    .case-detail-results li {
        padding-left: 54px;
    }

    .case-detail-needs li::before,
    .case-detail-results li::before {
        left: 20px;
    }
}