.content-section {
    margin-top: 4rem;
}

.hero {
    position: relative;
    min-height: 25rem;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: #082f49;
    box-shadow: var(--shadow-md);
}

.hero > img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.48;
}

.hero::after {
    position: absolute;
    inset: 0;
    content: "";
    background: linear-gradient(90deg, rgb(2 30 50 / 94%), rgb(2 30 50 / 42%) 70%, transparent);
}

.hero__copy {
    position: relative;
    z-index: 1;
    width: min(52rem, 82%);
    padding: clamp(2rem, 7vw, 5rem);
    color: #fff;
}

.hero__copy h1 {
    margin: 0;
    font-size: clamp(2rem, 6vw, 4.25rem);
    line-height: 1.15;
    letter-spacing: -0.025em;
    text-wrap: balance;
}

.hero__title-line {
    display: block;
}

.hero__copy > p:not(.eyebrow) {
    margin: 1.25rem 0 1.75rem;
    font-size: clamp(1rem, 2vw, 1.2rem);
}

.eyebrow {
    margin: 0 0 0.75rem;
    color: var(--accent-color);
    font-size: 0.82rem;
    font-weight: 900;
    letter-spacing: 0.16em;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.category-grid--wide {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.category-card {
    --category-accent: var(--theme-color);
    --category-accent-ink: var(--theme-color-hover);
    --category-accent-soft: var(--theme-color-soft);
    --category-accent-border: #bae6fd;
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--border);
    border-top: 0.35rem solid var(--category-accent);
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--category-accent-soft) 0, var(--surface) 12rem);
    box-shadow: var(--shadow-sm);
    transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.category-card:hover,
.category-card:focus-within {
    border-color: var(--category-accent-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-0.2rem);
}

.category-card__header {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    justify-content: space-between;
    padding: 1.15rem 1.2rem 0.9rem;
}

.category-card__heading {
    display: flex;
    gap: 0.7rem;
    align-items: center;
    min-width: 0;
}

.category-card__icon,
.tag-directory__icon {
    display: inline-grid;
    flex: 0 0 auto;
    width: 2.45rem;
    height: 2.45rem;
    place-items: center;
    border-radius: 0.8rem;
    background: var(--category-accent, var(--tag-accent));
    color: #fff;
    font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
    font-size: 0.8rem;
    font-weight: 900;
    letter-spacing: -0.08em;
    line-height: 1;
    box-shadow: 0 0.35rem 0.8rem rgb(15 23 42 / 16%);
}

.category-card h2 {
    margin: 0;
    color: var(--text);
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    line-height: 1.3;
}

.category-card__count,
.tag-directory__count {
    flex: 0 0 auto;
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--category-accent-border, var(--tag-border));
    border-radius: 999px;
    background: rgb(255 255 255 / 78%);
    color: var(--category-accent-ink, var(--tag-ink));
    font-size: 0.74rem;
    font-weight: 800;
    white-space: nowrap;
}

.category-card__list {
    display: grid;
    gap: 0.22rem;
    margin: 0;
    padding: 0 1.2rem 1.15rem;
    list-style: none;
}

.category-card__list li {
    min-width: 0;
}

.category-card__article-link {
    display: inline-flex;
    gap: 0.42rem;
    align-items: flex-start;
    min-width: 0;
    color: var(--text);
    line-height: 1.5;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.16em;
}

.category-card__article-link::before {
    flex: 0 0 auto;
    color: var(--category-accent);
    content: "↗";
    font-weight: 900;
}

.category-card__article-link:hover,
.category-card__article-link:focus-visible {
    color: var(--category-accent-ink);
}

.category-card__more {
    display: inline-flex;
    gap: 0.35rem;
    align-items: center;
    width: max-content;
    margin: auto 1.2rem 1.15rem;
    color: var(--category-accent);
    font-weight: 800;
    text-decoration-thickness: 2px;
    text-underline-offset: 0.18em;
}

.category-card__more::after {
    content: "→";
}

.category-card__more:hover,
.category-card__more:focus-visible {
    color: var(--category-accent-ink);
}

.category-card--language,
.tag-directory__group--language {
    --category-accent: #2563eb;
    --category-accent-ink: #1d4ed8;
    --category-accent-soft: #eff6ff;
    --category-accent-border: #bfdbfe;
    --tag-accent: #2563eb;
    --tag-ink: #1d4ed8;
    --tag-soft: #eff6ff;
    --tag-border: #bfdbfe;
}

.category-card--framework,
.tag-directory__group--framework {
    --category-accent: #0f766e;
    --category-accent-ink: #115e59;
    --category-accent-soft: #f0fdfa;
    --category-accent-border: #99f6e4;
    --tag-accent: #0f766e;
    --tag-ink: #115e59;
    --tag-soft: #f0fdfa;
    --tag-border: #99f6e4;
}

.category-card--infrastructure,
.tag-directory__group--infrastructure {
    --category-accent: #0284c7;
    --category-accent-ink: #0369a1;
    --category-accent-soft: #f0f9ff;
    --category-accent-border: #bae6fd;
    --tag-accent: #0284c7;
    --tag-ink: #0369a1;
    --tag-soft: #f0f9ff;
    --tag-border: #bae6fd;
}

.category-card--server,
.tag-directory__group--server {
    --category-accent: #15803d;
    --category-accent-ink: #166534;
    --category-accent-soft: #f0fdf4;
    --category-accent-border: #bbf7d0;
    --tag-accent: #15803d;
    --tag-ink: #166534;
    --tag-soft: #f0fdf4;
    --tag-border: #bbf7d0;
}

.category-card--build,
.tag-directory__group--build {
    --category-accent: #c2410c;
    --category-accent-ink: #9a3412;
    --category-accent-soft: #fff7ed;
    --category-accent-border: #fed7aa;
    --tag-accent: #c2410c;
    --tag-ink: #9a3412;
    --tag-soft: #fff7ed;
    --tag-border: #fed7aa;
}

.category-card--database,
.tag-directory__group--database {
    --category-accent: #7c3aed;
    --category-accent-ink: #6d28d9;
    --category-accent-soft: #f5f3ff;
    --category-accent-border: #ddd6fe;
    --tag-accent: #7c3aed;
    --tag-ink: #6d28d9;
    --tag-soft: #f5f3ff;
    --tag-border: #ddd6fe;
}

.category-card--collaboration,
.tag-directory__group--collaboration {
    --category-accent: #be123c;
    --category-accent-ink: #9f1239;
    --category-accent-soft: #fff1f2;
    --category-accent-border: #fecdd3;
    --tag-accent: #be123c;
    --tag-ink: #9f1239;
    --tag-soft: #fff1f2;
    --tag-border: #fecdd3;
}

.category-card--quality,
.tag-directory__group--quality {
    --category-accent: #4d7c0f;
    --category-accent-ink: #3f6212;
    --category-accent-soft: #f7fee7;
    --category-accent-border: #d9f99d;
    --tag-accent: #4d7c0f;
    --tag-ink: #3f6212;
    --tag-soft: #f7fee7;
    --tag-border: #d9f99d;
}

.category-card--cicd,
.tag-directory__group--cicd {
    --category-accent: #4338ca;
    --category-accent-ink: #3730a3;
    --category-accent-soft: #eef2ff;
    --category-accent-border: #c7d2fe;
    --tag-accent: #4338ca;
    --tag-ink: #3730a3;
    --tag-soft: #eef2ff;
    --tag-border: #c7d2fe;
}

.category-card--editor,
.tag-directory__group--editor {
    --category-accent: #0369a1;
    --category-accent-ink: #075985;
    --category-accent-soft: #ecfeff;
    --category-accent-border: #a5f3fc;
    --tag-accent: #0369a1;
    --tag-ink: #075985;
    --tag-soft: #ecfeff;
    --tag-border: #a5f3fc;
}

.category-card--document,
.tag-directory__group--document {
    --category-accent: #a16207;
    --category-accent-ink: #854d0e;
    --category-accent-soft: #fefce8;
    --category-accent-border: #fde68a;
    --tag-accent: #a16207;
    --tag-ink: #854d0e;
    --tag-soft: #fefce8;
    --tag-border: #fde68a;
}

.category-card--computer-science,
.tag-directory__group--computer-science {
    --category-accent: #6d28d9;
    --category-accent-ink: #5b21b6;
    --category-accent-soft: #faf5ff;
    --category-accent-border: #e9d5ff;
    --tag-accent: #6d28d9;
    --tag-ink: #5b21b6;
    --tag-soft: #faf5ff;
    --tag-border: #e9d5ff;
}

.category-card--compliance,
.tag-directory__group--compliance {
    --category-accent: #9f1239;
    --category-accent-ink: #881337;
    --category-accent-soft: #fff1f2;
    --category-accent-border: #fecdd3;
    --tag-accent: #9f1239;
    --tag-ink: #881337;
    --tag-soft: #fff1f2;
    --tag-border: #fecdd3;
}

.category-card--web,
.tag-directory__group--web {
    --category-accent: #0891b2;
    --category-accent-ink: #0e7490;
    --category-accent-soft: #ecfeff;
    --category-accent-border: #a5f3fc;
    --tag-accent: #0891b2;
    --tag-ink: #0e7490;
    --tag-soft: #ecfeff;
    --tag-border: #a5f3fc;
}

.category-card--default,
.tag-directory__group--default {
    --category-accent: #475569;
    --category-accent-ink: #334155;
    --category-accent-soft: #f8fafc;
    --category-accent-border: #cbd5e1;
    --tag-accent: #475569;
    --tag-ink: #334155;
    --tag-soft: #f8fafc;
    --tag-border: #cbd5e1;
}

.filter-group + .filter-group {
    margin-top: 2.5rem;
}

.filter-group h2 {
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.tag-directory {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.tag-directory__group {
    min-width: 0;
    margin: 0;
    padding: 1.05rem;
    border: 1px solid var(--tag-border, #bae6fd);
    border-top: 0.3rem solid var(--tag-accent, var(--theme-color));
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--tag-soft, var(--theme-color-soft)) 0, var(--surface) 13rem);
    box-shadow: var(--shadow-sm);
}

.tag-directory__group + .tag-directory__group {
    margin-top: 0;
}

.tag-directory__heading {
    display: flex;
    gap: 0.7rem;
    align-items: center;
    margin-bottom: 0.9rem;
}

.tag-directory__icon {
    width: 2.15rem;
    height: 2.15rem;
    border-radius: 0.7rem;
    background: var(--tag-accent);
}

.tag-directory__heading h2 {
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
    color: var(--text);
    font-size: 1.08rem;
    line-height: 1.35;
}

.tag-directory__count {
    margin-left: auto;
    border-color: var(--tag-border);
    color: var(--tag-ink);
}

.tag-directory__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag-directory__chip {
    display: inline-flex;
    align-items: center;
    padding: 0.42rem 0.75rem;
    border: 1px solid var(--tag-border);
    border-radius: 999px;
    background: rgb(255 255 255 / 82%);
    color: var(--tag-ink);
    font-weight: 800;
    box-shadow: 0 1px 2px rgb(15 23 42 / 6%);
    text-decoration: none;
    transition: transform 150ms ease, background 150ms ease, border-color 150ms ease;
}

.tag-directory__chip:hover,
.tag-directory__chip:focus-visible {
    border-color: var(--tag-accent);
    background: var(--tag-soft);
    color: var(--tag-ink);
    transform: translateY(-1px);
}

.search-form {
    margin-bottom: 2rem;
    padding: 1.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
}

.search-form__keyword {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.75rem;
}

.search-form__keyword label {
    font-weight: 800;
}

.search-form input[type="search"] {
    width: 100%;
    min-height: 2.75rem;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
}

.search-form__filters {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}

.filter-details {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.filter-details summary {
    padding: 0.65rem 0.75rem;
    cursor: pointer;
    font-weight: 800;
}

.checkbox-list {
    max-height: 15rem;
    padding: 0.25rem 0.75rem 0.75rem;
    overflow-y: auto;
}

.checkbox-list label {
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
    padding: 0.32rem 0;
}

.checkbox-list input {
    width: 1.1rem;
    height: 1.1rem;
    margin-top: 0.2rem;
    accent-color: var(--theme-color);
}

.result-heading {
    margin: 2rem 0 1rem;
}

.wiki-layout {
    display: grid;
    grid-template-columns: 18rem minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
}

.wiki-sidebar {
    position: sticky;
    top: calc(var(--header-height) + 1rem);
    max-height: calc(100vh - var(--header-height) - 2rem);
    padding: 1rem;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
}

.wiki-sidebar__home {
    display: inline-block;
    margin-bottom: 1rem;
    font-weight: 800;
}

.wiki-sidebar h2 {
    margin: 0.2rem 0 0.65rem;
    font-size: 1.15rem;
    line-height: 1.4;
    overflow-wrap: anywhere;
}

.wiki-sidebar__eyebrow {
    margin: 0;
    color: var(--theme-color);
    font-size: 0.72rem;
    font-weight: 900;
    letter-spacing: 0.12em;
}

.wiki-sidebar__current {
    margin: 0 0 0.85rem;
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 700;
}

.wiki-series-details {
    margin-bottom: 1.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface-muted);
}

.wiki-series-details summary {
    padding: 0.7rem 0.8rem;
    color: var(--theme-color);
    font-size: 0.84rem;
    font-weight: 900;
    cursor: pointer;
}

.wiki-series-details summary:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 2px;
}

.wiki-series-details .wiki-series-list {
    margin: 0;
    padding: 0 0.45rem 0.55rem;
    list-style: none;
}

.wiki-sidebar ol {
    margin: 0;
    padding-left: 1.25rem;
}

.wiki-sidebar li + li {
    margin-top: 0.25rem;
}

.wiki-sidebar a {
    display: block;
    padding: 0.38rem 0.45rem;
    border-radius: 0.35rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.4;
    overflow-wrap: anywhere;
    text-decoration: none;
}

.wiki-series-list a {
    display: grid;
    grid-template-columns: 1rem minmax(0, 1fr);
    gap: 0.35rem;
}

.wiki-series-list__check {
    color: var(--theme-color);
    font-weight: 900;
    text-align: center;
}

.wiki-series-list .is-completed .wiki-series-list__title {
    font-weight: 800;
}

.wiki-sidebar a:hover,
.wiki-sidebar a[aria-current="page"] {
    background: var(--theme-color-soft);
    color: var(--theme-color);
}

.wiki-article {
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}

.article-header {
    padding: clamp(1.25rem, 4vw, 2.75rem);
    border-bottom: 1px solid var(--border);
    background: linear-gradient(140deg, #f8fafc, #e0f2fe);
}

.article-header__copy {
    min-width: 0;
}

.article-header h1 {
    margin: 0;
    font-size: clamp(1.7rem, 3.4vw, 2.55rem);
    line-height: 1.3;
    overflow-wrap: anywhere;
    text-wrap: balance;
}

.article-header__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    align-items: center;
    margin-top: 1.25rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.learning-guide {
    margin: 1rem clamp(1.1rem, 4vw, 2.75rem) 0;
    padding: 1rem clamp(1rem, 2.5vw, 1.35rem);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface-muted);
}

.learning-guide__header {
    display: flex;
    gap: 1rem;
    align-items: center;
    justify-content: space-between;
}

.learning-guide__header h2 {
    margin: 0;
    font-size: clamp(1.15rem, 2.2vw, 1.45rem);
}

.learning-guide__progress {
    margin-top: 0.85rem;
}

.learning-guide__progress h3 {
    margin: 0 0 0.45rem;
    font-size: 0.92rem;
}

.learning-guide__label {
    margin: 0 0 0.3rem;
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.08em;
}

.learning-guide__progress progress {
    display: block;
    width: 100%;
    height: 0.75rem;
    overflow: hidden;
    border: 0;
    border-radius: 999px;
    background: var(--surface-strong);
    accent-color: var(--theme-color);
}

.learning-guide__progress progress::-webkit-progress-bar {
    background: var(--surface-strong);
}

.learning-guide__progress progress::-webkit-progress-value {
    background: var(--theme-color);
}

.learning-guide__progress progress::-moz-progress-bar {
    background: var(--theme-color);
}

.learning-guide__progress-note {
    margin: 0.5rem 0 0;
    color: var(--text-muted);
    font-size: 0.78rem;
    line-height: 1.5;
}

.learning-guide__check-link {
    flex: 0 0 auto;
    font-weight: 800;
}

.learning-guide__details {
    margin-top: 0.9rem;
    border-top: 1px solid var(--border);
}

.learning-guide__details summary {
    padding-top: 0.85rem;
    color: var(--theme-color);
    font-weight: 900;
    cursor: pointer;
}

.learning-guide__details summary:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 2px;
}

.learning-guide__introduction > p {
    margin: 0.85rem 0 0;
    color: var(--text-muted);
    line-height: 1.75;
}

.learning-guide__outcomes {
    margin-top: 1rem;
}

.learning-guide__outcomes h3 {
    margin: 0 0 0.65rem;
    font-size: 1rem;
}

.learning-guide__outcomes ul {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem 1.5rem;
    margin: 0;
    padding-left: 1.25rem;
}

.learning-guide__outcomes li {
    line-height: 1.6;
}

.learning-guide__completion {
    margin: 1rem 0 0;
    padding: 0.85rem 1rem;
    border-left: 0.3rem solid var(--theme-color);
    background: var(--theme-color-soft);
    color: var(--theme-color);
    font-weight: 800;
}

.article-body {
    padding: clamp(1.15rem, 5vw, 3.5rem);
}

.knowledge-check {
    padding: clamp(1.25rem, 4vw, 2.75rem);
    border-top: 0.5rem solid #f5c04a;
    background: linear-gradient(145deg, #fffdf5, #fff8df);
}

.knowledge-check__header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1.5rem;
}

.knowledge-check__eyebrow {
    margin: 0 0 0.2rem;
    color: #9a5b00;
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.08em;
}

.knowledge-check__symbol {
    display: grid;
    width: clamp(3.2rem, 7vw, 4.4rem);
    height: clamp(3.2rem, 7vw, 4.4rem);
    place-items: center;
    border: 2px solid #d89b17;
    border-radius: 50%;
    background: #fff;
    color: #9a5b00;
    font-size: clamp(1.5rem, 4vw, 2.1rem);
    font-weight: 900;
}

.knowledge-check h2 {
    margin: 0;
    font-size: clamp(1.35rem, 3vw, 1.85rem);
}

.knowledge-check__introduction {
    margin: 0.55rem 0 0;
    color: #6f5627;
    line-height: 1.7;
}

.knowledge-check fieldset {
    margin: 0;
    padding: 0;
    border: 0;
}

.knowledge-check legend {
    margin-bottom: 1rem;
    padding: 0;
    color: var(--text);
    font-size: clamp(1.05rem, 2vw, 1.2rem);
    font-weight: 900;
    line-height: 1.6;
}

.knowledge-check__choices {
    display: grid;
    gap: 0.75rem;
}

.knowledge-check__choice {
    display: grid;
    grid-template-columns: auto auto minmax(0, 1fr);
    gap: 0.75rem;
    align-items: start;
    padding: 0.9rem 1rem;
    border: 2px solid #ead9ae;
    border-radius: 0.85rem;
    background: var(--surface);
    line-height: 1.65;
    cursor: pointer;
    transition: border-color 140ms ease, background-color 140ms ease, transform 140ms ease;
}

.knowledge-check__choice:hover,
.knowledge-check__choice:focus-within {
    border-color: #c27b00;
    transform: translateY(-1px);
}

.knowledge-check__choice.is-correct {
    border-color: #15803d;
    background: #f0fdf4;
    color: #14532d;
}

.knowledge-check__choice.is-incorrect {
    border-color: #b91c1c;
    background: #fef2f2;
    color: #7f1d1d;
}

.knowledge-check form.is-complete .knowledge-check__choice {
    cursor: default;
}

.knowledge-check__choice input {
    width: 1.1rem;
    height: 1.1rem;
    margin: 0.25rem 0 0;
    accent-color: var(--theme-color);
}

.knowledge-check__choice-index {
    display: grid;
    width: 1.7rem;
    height: 1.7rem;
    place-items: center;
    border-radius: 50%;
    background: #fff3c4;
    color: #8a5100;
    font-weight: 900;
    line-height: 1;
}

.knowledge-check__choice > span:last-child {
    overflow-wrap: anywhere;
}

.knowledge-check__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-top: 1.25rem;
}

.knowledge-check__feedback {
    margin: 0.9rem 0 0;
    padding: 1rem 1.1rem;
    border: 1px solid transparent;
    border-left-width: 0.35rem;
    border-radius: 0.55rem;
    line-height: 1.65;
}

.knowledge-check__feedback:focus {
    outline: 3px solid var(--focus);
    outline-offset: 3px;
}

.knowledge-check__feedback.is-correct {
    border-color: #15803d;
    background: #f0fdf4;
    color: #14532d;
}

.knowledge-check__feedback.is-incorrect {
    border-color: #b45309;
    background: #fff7ed;
    color: #78350f;
}

.knowledge-check__result {
    margin: 0;
    font-size: 1.08rem;
    font-weight: 900;
}

.knowledge-check__explanation {
    margin: 0.35rem 0 0;
}

.mastery-check {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
}

.mastery-check h3 {
    margin: 0;
    font-size: 1.1rem;
}

.mastery-check__guidance {
    margin: 0.65rem 0 1rem;
    color: var(--text-muted);
    line-height: 1.65;
}

.mastery-check__toggle {
    min-width: min(100%, 20rem);
}

.mastery-check__storage-note,
.mastery-check__announcement {
    color: var(--text-muted);
    font-size: 0.82rem;
}

.mastery-check__storage-note {
    margin: 0.75rem 0 0;
}

.mastery-check__announcement {
    min-height: 1.35rem;
    margin: 0.55rem 0 0;
}

.article-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    padding: 1.5rem;
    border-top: 1px solid var(--border);
}

.article-navigation a {
    padding: 0.85rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface-muted);
    color: var(--text);
    overflow-wrap: anywhere;
    text-decoration: none;
}

.article-navigation__next {
    text-align: right;
}

.portal-content {
    padding: clamp(1rem, 4vw, 2.5rem);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
}

.document-page__actions {
    margin: -1rem 0 0.75rem;
    text-align: right;
}

.document-page__frame {
    display: block;
    width: 100%;
    height: min(72rem, calc(100vh - var(--header-height) - 10rem));
    min-height: 34rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
}

.news-table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
}

.news-table {
    width: 100%;
    border-collapse: collapse;
}

.news-table td {
    padding: 1.25rem;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.news-table tr:last-child td {
    border-bottom: 0;
}

.news-table td:first-child {
    width: 8rem;
    color: var(--text-muted);
    white-space: nowrap;
}

@media (max-width: 62rem) {
    .category-grid,
    .category-grid--wide {
        grid-template-columns: 1fr 1fr;
    }

    .wiki-layout {
        grid-template-columns: 1fr;
    }

    .wiki-sidebar {
        position: static;
        max-height: none;
    }

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

}

@media (max-width: 42rem) {
    .hero {
        min-height: 23rem;
    }

    .hero::after {
        background: rgb(2 30 50 / 76%);
    }

    .hero__copy {
        width: 100%;
        padding: 2rem 1.25rem;
    }

    .hero__copy h1 {
        font-size: clamp(1.75rem, 7.5vw, 2.5rem);
    }

    .category-grid,
    .category-grid--wide,
    .tag-directory,
    .search-form__filters {
        grid-template-columns: 1fr;
    }

    .search-form__keyword {
        grid-template-columns: 1fr;
    }

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

    .article-header,
    .knowledge-check {
        padding: 1.15rem;
    }

    .learning-guide {
        margin-inline: 0.8rem;
    }

    .learning-guide__header {
        display: grid;
        justify-content: stretch;
    }

    .learning-guide__check-link {
        justify-self: start;
    }

    .knowledge-check__choice {
        grid-template-columns: auto 1.7rem minmax(0, 1fr);
        gap: 0.55rem;
        padding-inline: 0.7rem;
    }

    .knowledge-check__actions .button {
        width: 100%;
    }

    .learning-guide__outcomes ul {
        grid-template-columns: 1fr;
    }

    .news-table td {
        display: block;
        width: auto !important;
        padding: 0.75rem 1rem;
        border-bottom: 0;
    }

    .news-table tr {
        display: block;
        border-bottom: 1px solid var(--border);
    }

    .document-page__frame {
        height: calc(100vh - var(--header-height) - 7rem);
        min-height: 28rem;
    }
}