/* CT1913 FAQ Center v1.2.0 - outline homepage + striped category accordion */
:root {
    --ct1913-faq-accent: #1546a0;
    --ct1913-faq-accent-soft: #eef3fb;
    --ct1913-faq-dark: #102636;
    --ct1913-faq-text: #273744;
    --ct1913-faq-muted: #687783;
    --ct1913-faq-border: #dfe5ea;
    --ct1913-faq-stripe: #f6f8fa;
    --ct1913-faq-white: #ffffff;
}

.ct1913-faq-center {
    max-width: 1040px;
    margin: 0 auto;
    padding: 28px 18px 56px;
    color: var(--ct1913-faq-text);
}

.ct1913-faq-intro {
    margin-bottom: 30px;
}

.ct1913-faq-intro h1 {
    margin: 0 0 12px;
    color: var(--ct1913-faq-dark);
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.2;
}

.ct1913-faq-intro p {
    max-width: 880px;
    margin: 0;
    color: #556573;
    line-height: 1.8;
}

.ct1913-faq-section-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 20px;
    margin: 0 0 14px;
}

.ct1913-faq-section-heading h2 {
    margin: 0;
    color: var(--ct1913-faq-dark);
    font-size: clamp(1.45rem, 3vw, 2rem);
}

.ct1913-faq-section-heading span {
    color: var(--ct1913-faq-muted);
    font-size: .92rem;
}

/* FAQ homepage: only major outline categories */
.ct1913-faq-outline-list {
    overflow: hidden;
    border: 1px solid var(--ct1913-faq-border);
    background: var(--ct1913-faq-white);
}

.ct1913-faq-outline-item {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr) auto 22px;
    align-items: center;
    gap: 16px;
    min-height: 82px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--ct1913-faq-border);
    color: var(--ct1913-faq-dark);
    text-decoration: none;
    transition: background-color .16s ease, color .16s ease;
}

.ct1913-faq-outline-item:nth-child(even) {
    background: var(--ct1913-faq-stripe);
}

.ct1913-faq-outline-item:last-child {
    border-bottom: 0;
}

.ct1913-faq-outline-item:hover,
.ct1913-faq-outline-item:focus-visible {
    background: var(--ct1913-faq-accent-soft);
    color: var(--ct1913-faq-accent);
    outline: 0;
}

.ct1913-faq-outline-number {
    color: var(--ct1913-faq-accent);
    font-size: .9rem;
    font-weight: 800;
    letter-spacing: .08em;
    font-variant-numeric: tabular-nums;
}

.ct1913-faq-outline-content {
    display: block;
    min-width: 0;
}

.ct1913-faq-outline-content strong {
    display: block;
    margin-bottom: 4px;
    font-size: 1.04rem;
    line-height: 1.45;
}

.ct1913-faq-outline-content small {
    display: block;
    color: var(--ct1913-faq-muted);
    font-size: .91rem;
    line-height: 1.55;
}

.ct1913-faq-outline-count {
    color: var(--ct1913-faq-muted);
    font-size: .88rem;
    white-space: nowrap;
}

.ct1913-faq-outline-arrow {
    width: 9px;
    height: 9px;
    border-top: 2px solid currentColor;
    border-right: 2px solid currentColor;
    transform: rotate(45deg);
}

/* Category page */
.ct1913-faq-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    color: #6c7b87;
    font-size: .92rem;
}

.ct1913-faq-breadcrumb a,
.ct1913-faq-permalink a {
    color: var(--ct1913-faq-accent);
}

.ct1913-faq-category-header {
    position: relative;
    margin-bottom: 24px;
    padding: 26px 28px;
    background: var(--ct1913-faq-dark);
    color: #fff;
}

.ct1913-faq-category-header h1 {
    margin: 0 0 10px;
    color: #fff;
    font-size: clamp(1.6rem, 3vw, 2.3rem);
}

.ct1913-faq-category-header p {
    max-width: 850px;
    margin: 0;
    color: #dbe4eb;
    line-height: 1.7;
}

.ct1913-faq-category-header > span {
    display: inline-block;
    margin-top: 14px;
    padding: 5px 10px;
    background: rgba(255, 255, 255, .12);
}

.ct1913-faq-filter {
    margin: 0 0 20px;
    padding: 18px;
    border: 1px solid var(--ct1913-faq-border);
    background: #f7f9fb;
}

.ct1913-faq-filter label {
    display: block;
    margin-bottom: 8px;
    color: var(--ct1913-faq-dark);
    font-weight: 800;
}

.ct1913-faq-filter input {
    width: 100%;
    min-height: 48px;
    padding: 11px 14px;
    border: 1px solid #cfd8df;
    border-radius: 3px;
    background: #fff;
    color: var(--ct1913-faq-dark);
    font: inherit;
}

.ct1913-faq-filter input:focus {
    outline: 3px solid rgba(21, 70, 160, .17);
    border-color: var(--ct1913-faq-accent);
}

.ct1913-faq-filter-status {
    margin: 8px 0 0;
    color: var(--ct1913-faq-muted);
    font-size: .92rem;
}

.ct1913-faq-accordion {
    border: 1px solid var(--ct1913-faq-border);
    background: #fff;
}

.ct1913-faq-item {
    margin: 0;
    border: 0;
    border-bottom: 1px solid var(--ct1913-faq-border);
    background: var(--ct1913-faq-white);
}

.ct1913-faq-item:nth-child(even) {
    background: var(--ct1913-faq-stripe);
}

.ct1913-faq-item:last-child {
    border-bottom: 0;
}

.ct1913-faq-item[hidden] {
    display: none;
}

.ct1913-faq-item summary {
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr) 24px;
    align-items: center;
    gap: 12px;
    min-height: 62px;
    padding: 11px 18px;
    color: var(--ct1913-faq-dark);
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.55;
    cursor: pointer;
    list-style: none;
}

.ct1913-faq-item summary::-webkit-details-marker {
    display: none;
}

.ct1913-faq-item summary::after {
    content: '';
    justify-self: end;
    width: 8px;
    height: 8px;
    border-right: 2px solid #3f4d58;
    border-bottom: 2px solid #3f4d58;
    transform: rotate(45deg) translateY(-2px);
    transition: transform .18s ease;
}

.ct1913-faq-item[open] summary {
    color: var(--ct1913-faq-accent);
    background: var(--ct1913-faq-accent-soft);
}

.ct1913-faq-item[open] summary::after {
    transform: rotate(225deg) translate(-2px, -2px);
}

.ct1913-faq-number {
    color: var(--ct1913-faq-accent);
    font-size: .88rem;
    font-variant-numeric: tabular-nums;
    letter-spacing: .04em;
}

.ct1913-faq-answer {
    padding: 4px 54px 24px 82px;
    color: #394957;
    line-height: 1.85;
    background: var(--ct1913-faq-accent-soft);
}

.ct1913-faq-answer p {
    margin: 0 0 12px;
}

.ct1913-faq-answer p:last-child {
    margin-bottom: 0;
}

.ct1913-faq-answer code {
    padding: 2px 5px;
    border-radius: 3px;
    background: #e2e8ef;
}

.ct1913-faq-permalink {
    margin-top: 16px !important;
    font-size: .88rem;
}

.ct1913-faq-category-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 34px;
}

.ct1913-faq-category-nav a {
    padding: 11px 17px;
    border: 1px solid var(--ct1913-faq-accent);
    color: var(--ct1913-faq-accent);
    font-weight: 700;
    text-decoration: none;
}

.ct1913-faq-category-nav a:last-child {
    background: var(--ct1913-faq-accent);
    color: #fff;
}

.ct1913-faq-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-top: 44px;
    padding: 26px 28px;
    background: var(--ct1913-faq-dark);
    color: #fff;
}

.ct1913-faq-cta strong {
    font-size: 1.15rem;
}

.ct1913-faq-cta p {
    margin: 6px 0 0;
    color: #d9e2e9;
}

.ct1913-faq-cta a {
    flex: 0 0 auto;
    padding: 12px 20px;
    border: 1px solid #fff;
    color: #fff;
    font-weight: 700;
    text-decoration: none;
}

.ct1913-faq-single {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px 0 50px;
}

.ct1913-faq-single-number {
    display: inline-block;
    margin-bottom: 12px;
    color: var(--ct1913-faq-accent);
    font-weight: 800;
    letter-spacing: .08em;
}

.ct1913-faq-single h1 {
    color: var(--ct1913-faq-dark);
}

.ct1913-faq-single-content {
    font-size: 1.05rem;
    line-height: 1.9;
}

.ct1913-faq-single-meta {
    margin-top: 28px;
    padding-top: 18px;
    border-top: 1px solid var(--ct1913-faq-border);
}

@media (max-width: 720px) {
    .ct1913-faq-center {
        padding-right: 10px;
        padding-left: 10px;
    }

    .ct1913-faq-outline-item {
        grid-template-columns: 38px minmax(0, 1fr) 18px;
        gap: 10px;
        padding: 13px 12px;
    }

    .ct1913-faq-outline-count {
        display: none;
    }

    .ct1913-faq-outline-content small {
        font-size: .86rem;
    }

    .ct1913-faq-item summary {
        grid-template-columns: 42px minmax(0, 1fr) 20px;
        padding: 12px;
    }

    .ct1913-faq-answer {
        padding: 4px 16px 22px 54px;
    }

    .ct1913-faq-cta,
    .ct1913-faq-category-nav {
        flex-direction: column;
        align-items: stretch;
    }

    .ct1913-faq-cta a {
        text-align: center;
    }
}

/* CT1913 FAQ v1.2.3: category outline hierarchy A-S */
.ct1913-faq-outline-list {
    counter-reset: ct1913-faq-alpha;
}

.ct1913-faq-outline-item {
    counter-increment: ct1913-faq-alpha;
    grid-template-columns: 84px minmax(0, 1fr) auto 24px;
    gap: 20px;
    min-height: 108px;
    padding: 20px 24px;
}

.ct1913-faq-outline-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border: 2px solid var(--ct1913-faq-accent);
    background: var(--ct1913-faq-accent-soft);
    color: var(--ct1913-faq-accent);
    font-size: 0;
    font-weight: 900;
    line-height: 1;
    letter-spacing: 0;
}

.ct1913-faq-outline-number::before {
    content: counter(ct1913-faq-alpha, upper-alpha);
    font-size: 2.1rem;
    font-weight: 900;
    line-height: 1;
}

.ct1913-faq-outline-content strong {
    margin-bottom: 7px;
    color: #102636;
    font-size: 1.35rem;
    font-weight: 850;
    line-height: 1.35;
}

.ct1913-faq-outline-content small {
    color: #475866;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.65;
}

.ct1913-faq-outline-count {
    color: #38506a;
    font-size: 1rem;
    font-weight: 750;
}

.ct1913-faq-outline-item:hover .ct1913-faq-outline-number,
.ct1913-faq-outline-item:focus-visible .ct1913-faq-outline-number {
    background: var(--ct1913-faq-accent);
    color: #ffffff;
}

/* CT1913 FAQ v1.2.3: answer readability over decoration */
.ct1913-faq-answer {
    color: #18232c !important;
    background: #ffffff !important;
    font-size: 1.08rem;
    font-weight: 500;
    line-height: 1.9;
}

.ct1913-faq-answer p,
.ct1913-faq-answer li {
    color: #18232c !important;
}

.ct1913-faq-item summary {
    color: #102636 !important;
    font-size: 1.08rem;
    font-weight: 800;
}

.ct1913-faq-item[open] summary {
    color: #0f3f82 !important;
    background: #e9f0f8 !important;
}

.ct1913-faq-number {
    color: #1546a0 !important;
    font-weight: 800;
}

.ct1913-faq-answer a {
    color: #0b4695 !important;
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 3px;
}

@media (max-width: 1100px) {
    .ct1913-faq-answer {
        font-size: 1.12rem;
        line-height: 1.9;
    }

    .ct1913-faq-item summary {
        font-size: 1.1rem;
    }
}

@media (max-width: 720px) {
    .ct1913-faq-outline-item {
        grid-template-columns: 62px minmax(0, 1fr) 18px;
        gap: 12px;
        min-height: 96px;
        padding: 16px 12px;
    }

    .ct1913-faq-outline-number {
        width: 50px;
        height: 50px;
    }

    .ct1913-faq-outline-number::before {
        font-size: 1.7rem;
    }

    .ct1913-faq-outline-content strong {
        font-size: 1.12rem;
    }

    .ct1913-faq-outline-content small {
        font-size: .92rem;
        line-height: 1.55;
    }
}