/**
 * Knowledge article panels, FAQ accordion, related links.
 */

.kh-panel {
    margin: 0 0 1rem;
    padding: 1.25rem 1.2rem 1.15rem;
    border-radius: var(--kh-radius);
    background: var(--kh-fill);
    border: 0.5px solid var(--kh-separator);
}

.kh-section-title {
    margin: 0 0 0.85rem;
    font-size: 1.125rem;
    font-weight: 650;
    letter-spacing: -0.025em;
    color: var(--kh-text);
}

.kh-prose {
    font-size: 0.96875rem;
    line-height: 1.65;
    letter-spacing: -0.01em;
    color: var(--kh-label);
}

.kh-prose p {
    margin: 0 0 0.85rem;
}

.kh-prose p:last-child {
    margin-bottom: 0;
}

.kh-prose a {
    color: var(--kh-accent);
    font-weight: 600;
    text-decoration: none;
}

.kh-prose a:hover {
    text-decoration: underline;
}

.kh-prose strong {
    color: var(--kh-text);
    font-weight: 650;
}

.kh-keywords {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.kh-keyword {
    margin: 0;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    background: var(--kh-surface);
    border: 0.5px solid var(--kh-separator);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--kh-text);
}

.kh-panel--keywords {
    background: transparent;
    border-style: dashed;
}

.kh-faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.kh-faq {
    margin: 0;
    border-radius: 12px;
    background: var(--kh-surface);
    border: 0.5px solid var(--kh-separator);
    overflow: hidden;
}

:root[data-theme="dark"] .kh-faq {
    background: var(--color-surface-raised);
    border-color: var(--color-border-strong);
    box-shadow: inset 0 0 0 0.5px rgba(255, 255, 255, 0.04);
}

:root[data-theme="dark"] .kh-faq__def {
    background: var(--color-surface-strong);
    border-color: var(--color-border);
}

.kh-faq summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.95rem 1rem;
    cursor: pointer;
    list-style: none;
    user-select: none;
}

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

.kh-faq__q {
    font-size: 0.96875rem;
    font-weight: 600;
    letter-spacing: -0.015em;
    line-height: 1.35;
    color: var(--kh-text);
}

.kh-faq__mark {
    position: relative;
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
    border-radius: 50%;
    background: var(--kh-accent-soft);
}

.kh-faq__mark::before,
.kh-faq__mark::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    background: var(--kh-accent);
    border-radius: 1px;
    transition: transform 0.18s ease, opacity 0.18s ease;
}

.kh-faq__mark::before {
    width: 0.55rem;
    height: 1.5px;
    transform: translate(-50%, -50%);
}

.kh-faq__mark::after {
    width: 1.5px;
    height: 0.55rem;
    transform: translate(-50%, -50%);
}

.kh-faq[open] .kh-faq__mark::after {
    opacity: 0;
    transform: translate(-50%, -50%) scaleY(0);
}

.kh-faq__a {
    margin: 0 1rem;
    padding: 0.85rem 0 1.1rem;
    border-top: 0.5px solid var(--kh-separator);
    font-size: 0.9375rem;
    line-height: 1.55;
    letter-spacing: -0.01em;
    color: var(--kh-text);
}

.kh-faq__lead,
.kh-faq__note,
.kh-faq__a > p {
    margin: 0 0 0.75rem;
    color: var(--kh-text);
}

.kh-faq__lead:last-child,
.kh-faq__note:last-child,
.kh-faq__a > p:last-child {
    margin-bottom: 0;
}

.kh-faq__note {
    padding-top: 0.65rem;
    border-top: 0.5px solid var(--kh-separator);
    font-size: 0.875rem;
}

.kh-faq__list,
.kh-faq__steps {
    margin: 0 0 0.75rem;
    padding-left: 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.kh-faq__list:last-child,
.kh-faq__steps:last-child {
    margin-bottom: 0;
}

.kh-faq__list li,
.kh-faq__steps li {
    padding-left: 0.15rem;
    color: var(--kh-text);
}

.kh-faq__list strong,
.kh-faq__steps strong,
.kh-faq__def dt {
    color: var(--kh-text);
    font-weight: 650;
}

.kh-faq__a a {
    color: var(--kh-accent);
    font-weight: 600;
    text-decoration: none;
}

.kh-faq__a a:hover {
    text-decoration: underline;
}

.kh-faq__defs {
    margin: 0 0 0.75rem;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.kh-faq__defs:last-child {
    margin-bottom: 0;
}

.kh-faq__def {
    margin: 0;
    padding: 0.75rem 0.85rem;
    border-radius: 12px;
    background: var(--kh-fill);
    border: 0.5px solid var(--kh-separator);
}

.kh-faq__def dt {
    margin: 0 0 0.25rem;
    font-size: 0.9375rem;
    letter-spacing: -0.015em;
    line-height: 1.3;
}

.kh-faq__def dd {
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--kh-text);
}

.kh-link-list,
.kh-related {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.kh-link-list a,
.kh-related a {
    color: var(--kh-accent);
    text-decoration: none;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.kh-link-list a:hover,
.kh-related a:hover,
.kh-back a:hover {
    text-decoration: underline;
}

.kh-related li {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.35rem 0.65rem;
    padding: 0.55rem 0;
    border-bottom: 0.5px solid var(--kh-separator);
}

.kh-related li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.kh-related__meta {
    font-size: 0.8125rem;
    color: var(--kh-label);
}

.kh-back {
    margin: 1rem 0 0;
    font-size: 0.875rem;
    font-weight: 600;
}

.kh-back a {
    color: var(--kh-accent);
    text-decoration: none;
}

.kh-byline {
    margin: 0.85rem 0 0;
    font-size: 0.8125rem;
    line-height: 1.45;
    letter-spacing: -0.01em;
    color: var(--kh-label);
}

.kh-panel--intro {
    background: color-mix(in srgb, var(--kh-accent-soft) 45%, var(--kh-fill));
}

.kh-prose--note {
    margin: 0 0 0.85rem;
    font-size: 0.875rem;
}

.kh-prose-list {
    margin: 0.35rem 0 0;
    padding-left: 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.kh-prose-list li {
    padding-left: 0.1rem;
    color: var(--kh-text);
}

.kh-panel--disclaimer {
    background: var(--kh-surface);
    border-style: dashed;
}

.kh-disclaimer__text {
    margin: 0 0 0.85rem;
    font-size: 0.875rem;
    line-height: 1.55;
    color: var(--kh-label);
}

.kh-disclaimer__cta {
    margin: 0;
    font-size: 0.9375rem;
    line-height: 1.5;
}

.kh-disclaimer__cta a {
    color: var(--kh-accent);
    font-weight: 600;
    text-decoration: none;
}

.kh-disclaimer__cta a:hover {
    text-decoration: underline;
}

@media (max-width: 639px) {
    .kh-panel {
        margin-bottom: 0.5rem;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }
}

/* Academy long reads: one continuous editorial column, not stacked panels. */
.kh-academy--article {
    max-width: 1180px;
    padding-top: clamp(2rem, 5vw, 4rem);
}

.kh-article-hero {
    max-width: 940px;
    padding: clamp(2rem, 5vw, 4.75rem) 0 clamp(2.5rem, 5vw, 4rem);
}

.kh-academy--article .kh-title {
    max-width: 15ch;
    font-size: clamp(3rem, 7vw, 6.75rem);
    line-height: 0.98;
}

.kh-academy--article .kh-lede {
    max-width: 47rem;
    margin-top: 1.75rem;
    font-size: clamp(1.1rem, 2vw, 1.45rem);
}

.kh-article-rule {
    height: 1px;
    background: var(--kh-separator);
}

.kh-article-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 720px);
    gap: clamp(3rem, 8vw, 8rem);
    justify-content: center;
    align-items: start;
    padding: clamp(3rem, 7vw, 6rem) 0;
}

.kh-article-aside {
    position: sticky;
    top: 5.5rem;
    max-height: calc(100vh - 7rem);
    overflow: auto;
}

.kh-article-toc {
    list-style: decimal-leading-zero;
    margin: 1rem 0 0;
    padding-left: 2.2rem;
    color: var(--kh-label);
}

.kh-article-toc li {
    padding: 0.36rem 0 0.36rem 0.35rem;
    font-size: 0.76rem;
    line-height: 1.35;
}

.kh-article-toc a {
    color: var(--kh-label);
    text-decoration: none;
}

.kh-article-toc a:hover {
    color: var(--kh-accent);
}

.kh-article-main {
    min-width: 0;
}

.kh-academy--article .kh-panel,
.kh-academy--article .kh-article-section {
    margin: 0;
    padding: 0 0 3.75rem;
    border: 0;
    border-radius: 0;
    background: transparent;
}

.kh-academy--article .kh-panel--intro {
    margin-bottom: 3.75rem;
    padding: 0 0 2rem;
    border-bottom: 1px solid var(--kh-separator);
}

.kh-academy--article .kh-panel--intro .kh-prose {
    font-size: 1.16rem;
    line-height: 1.72;
    color: var(--kh-text);
}

.kh-academy--article .kh-section-title {
    margin: 0 0 1.2rem;
    font-size: clamp(1.55rem, 3vw, 2.2rem);
    font-weight: 560;
    line-height: 1.15;
    letter-spacing: -0.04em;
}

.kh-academy--article .kh-prose {
    font-size: 1.03rem;
    line-height: 1.78;
    letter-spacing: -0.008em;
}

.kh-academy--article .kh-prose p {
    margin-bottom: 1.15rem;
}

.kh-academy--article .kh-prose-list {
    gap: 0.7rem;
    margin: 1.2rem 0;
}

.kh-academy--article .kh-faq-list {
    border-top: 1px solid var(--kh-separator);
    gap: 0;
}

.kh-academy--article .kh-faq {
    border: 0;
    border-bottom: 1px solid var(--kh-separator);
    border-radius: 0;
    background: transparent;
}

.kh-academy--article .kh-faq summary {
    padding: 1.2rem 0;
}

.kh-academy--article .kh-faq__a {
    margin: 0;
    padding: 0 3rem 1.25rem 0;
    border-top: 0;
    color: var(--kh-label);
}

.kh-academy--article .kh-faq__mark {
    background: transparent;
}

.kh-academy--article .kh-panel--disclaimer {
    padding: 1.4rem 0 0;
    border-top: 1px solid var(--kh-separator);
}

.kh-article-footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 7vw, 7rem);
    padding: clamp(2.5rem, 6vw, 5rem) 0;
    border-top: 1px solid var(--kh-separator);
}

.kh-article-footer .kh-panel {
    padding: 0;
    background: transparent;
    border: 0;
}

@media (max-width: 850px) {
    .kh-article-layout {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .kh-article-aside {
        position: static;
        max-height: none;
        padding-bottom: 1.5rem;
        border-bottom: 1px solid var(--kh-separator);
    }

    .kh-article-toc {
        columns: 2;
    }
}

@media (max-width: 560px) {
    .kh-article-toc {
        columns: 1;
    }

    .kh-article-footer {
        grid-template-columns: 1fr;
    }
}