:root {
    --manual-bg: #f4efe7;
    --manual-bg-soft: #fbf8f4;
    --manual-surface: rgba(255, 255, 255, 0.94);
    --manual-surface-strong: #ffffff;
    --manual-border: rgba(23, 49, 58, 0.12);
    --manual-ink: #17313a;
    --manual-muted: #59656f;
    --manual-accent: #0d9488;
    --manual-accent-strong: #0f766e;
    --manual-accent-soft: #d8efe8;
    --manual-warm: #f2b168;
    --manual-warm-soft: #f8e1c3;
    --manual-shadow: 0 20px 60px rgba(23, 49, 58, 0.12);
    --manual-radius-lg: 28px;
    --manual-radius-md: 20px;
    --manual-radius-sm: 14px;
    --manual-max-width: 1120px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body.manual-body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-main, "IBM Plex Sans", system-ui, sans-serif);
    color: var(--manual-ink);
    background:
        radial-gradient(circle at top left, rgba(216, 239, 232, 0.95), transparent 28%),
        radial-gradient(circle at top right, rgba(248, 225, 195, 0.8), transparent 24%),
        radial-gradient(circle at bottom left, rgba(215, 229, 255, 0.8), transparent 30%),
        linear-gradient(180deg, #f8f3ed 0%, #f3ede4 100%);
}

body.manual-body img {
    max-width: 100%;
    height: auto;
}

.manual-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(23, 49, 58, 0.08);
}

.manual-nav {
    max-width: var(--manual-max-width);
    margin: 0 auto;
    padding: 16px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.manual-logo {
    color: var(--manual-accent-strong);
    text-decoration: none;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.manual-nav-links {
    display: flex;
    align-items: center;
    gap: 16px;
}

.manual-nav-links a {
    color: var(--manual-ink);
    text-decoration: none;
    font-weight: 500;
}

.manual-nav-links a:hover,
.manual-link:hover,
.breadcrumb a:hover,
.manual-nav-links a:focus-within,
.manual-link:focus-within,
.breadcrumb a:focus-within{
    color: var(--manual-accent-strong);
}

.content-shell,
.article-shell {
    max-width: var(--manual-max-width);
    margin: 0 auto;
    padding: 36px 22px 0;
}

.panel {
    background: var(--manual-surface);
    border: 1px solid var(--manual-border);
    border-radius: var(--manual-radius-lg);
    box-shadow: var(--manual-shadow);
}

.manual-hero {
    padding-top: 30px;
}

.hero-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
    gap: 28px;
    align-items: stretch;
}

.hero-copy,
.hero-media {
    padding: 32px;
}

.hero-copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.eyebrow {
    display: inline-flex;
    width: fit-content;
    max-width: 100%;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    border-radius: 999px;
    background: var(--manual-accent);
    color: #fff;
    font-size: 0.92rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.hero-title,
.part-hero h1 {
    margin: 18px 0 12px;
    font-size: clamp(2.2rem, 4vw, 4.1rem);
    line-height: 1.05;
    color: var(--manual-ink);
}

.hero-desc,
.part-hero p {
    margin: 0;
    font-size: 1.08rem;
    line-height: 1.7;
    color: var(--manual-muted);
}

.hero-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.hero-pill,
.inline-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 16px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(23, 49, 58, 0.08);
    color: var(--manual-ink);
    font-size: 0.95rem;
    font-weight: 600;
}

.hero-media {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-media img {
    border-radius: 24px;
    width: 100%;
    display: block;
}

.intro-grid,
.feature-grid,
.question-grid,
.related-grid,
.component-grid,
.dual-grid,
.mini-grid {
    display: grid;
    gap: 18px;
}

.intro-grid,
.feature-grid,
.question-grid,
.related-grid,
.mini-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.section-card,
.intro-card,
.feature-card,
.question-card,
.related-card,
.component-card,
.mini-card {
    background: var(--manual-surface);
    border: 1px solid var(--manual-border);
    border-radius: var(--manual-radius-md);
    box-shadow: 0 12px 32px rgba(23, 49, 58, 0.07);
}

.section-card,
.intro-card,
.feature-card,
.question-card,
.related-card,
.component-card,
.mini-card {
    padding: 24px;
}

.intro-card h2,
.section-card h2,
.toc-title,
.related-title {
    margin: 0 0 14px;
    font-size: clamp(1.6rem, 2.4vw, 2.1rem);
    line-height: 1.15;
}

.intro-card p,
.section-card p,
.question-card p,
.related-card p,
.feature-card p,
.mini-card p {
    margin: 0 0 14px;
    line-height: 1.75;
    color: var(--manual-muted);
}

.intro-card p:last-child,
.section-card p:last-child,
.question-card p:last-child,
.related-card p:last-child,
.feature-card p:last-child,
.mini-card p:last-child {
    margin-bottom: 0;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
    gap: 14px;
    margin-top: 22px;
    align-items: stretch;
}

.stat-card {
    min-width: 0;
    padding: 18px;
    border-radius: var(--manual-radius-sm);
    background: linear-gradient(180deg, rgba(13, 148, 136, 0.08), rgba(255, 255, 255, 0.82));
    border: 1px solid rgba(13, 148, 136, 0.1);
    display: flex;
    flex-direction: column;
}

.stat-value {
    display: block;
    font-size: clamp(1.55rem, 4.6vw, 2rem);
    font-weight: 700;
    color: var(--manual-accent-strong);
    line-height: 0.95;
    white-space: nowrap;
}

.stat-label {
    display: block;
    margin-top: 10px;
    color: var(--manual-muted);
    font-size: clamp(0.92rem, 2.3vw, 0.95rem);
    line-height: 1.45;
    overflow-wrap: anywhere;
}

.note-box,
.disclaimer-box {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 14px;
    align-items: start;
    margin-top: 24px;
    padding: 18px 20px;
    border-radius: var(--manual-radius-sm);
    background: linear-gradient(180deg, rgba(242, 177, 104, 0.18), rgba(255, 255, 255, 0.92));
    border: 1px solid rgba(242, 177, 104, 0.38);
}

.note-box i,
.disclaimer-box i {
    color: #b96b10;
    font-size: 1.1rem;
    margin-top: 4px;
}

.note-box strong,
.disclaimer-box strong {
    color: var(--manual-ink);
}

.feature-card {
    position: relative;
    overflow: hidden;
}

.feature-card::after {
    content: "";
    position: absolute;
    inset: auto -18px -26px auto;
    width: 92px;
    height: 92px;
    border-radius: 50%;
    background: rgba(13, 148, 136, 0.08);
}

.feature-card h3,
.question-card h3,
.related-card h3,
.section-card h3,
.component-card h3,
.mini-card h3 {
    margin: 0 0 10px;
    font-size: 1.08rem;
    line-height: 1.35;
}

.feature-card h3 {
    color: var(--manual-accent-strong);
}

.toc-section,
.faq-preview,
.related-section,
.article-block {
    margin-top: 34px;
}

.toc-title {
    text-align: center;
}

.chapters {
    display: grid;
    gap: 16px;
}

.chapter-card {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 18px;
    align-items: center;
    padding: 22px 24px;
    text-decoration: none;
    color: inherit;
    background: var(--manual-surface);
    border: 1px solid var(--manual-border);
    border-radius: var(--manual-radius-md);
    box-shadow: 0 12px 32px rgba(23, 49, 58, 0.07);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.chapter-card:hover,
.chapter-card:focus-within{
    transform: translateY(-3px);
    border-color: rgba(13, 148, 136, 0.28);
    box-shadow: 0 16px 36px rgba(23, 49, 58, 0.12);
}

.chapter-number {
    width: 54px;
    height: 54px;
    display: grid;
    place-items: center;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--manual-accent), var(--manual-accent-strong));
    color: #fff;
    font-size: 1.15rem;
    font-weight: 700;
}

.chapter-title {
    margin: 0 0 6px;
    font-size: 1.1rem;
}

.chapter-desc,
.chapter-meta {
    margin: 0;
    color: var(--manual-muted);
}

.chapter-meta {
    margin-top: 6px;
    font-size: 0.9rem;
    color: var(--manual-accent-strong);
    font-weight: 600;
}

.chapter-arrow {
    color: rgba(23, 49, 58, 0.36);
    font-size: 1.15rem;
}

.question-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(216, 239, 232, 0.54));
}

.question-card p strong {
    color: var(--manual-ink);
}

.related-card {
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.related-card:hover,
.related-card:focus-within{
    transform: translateY(-3px);
    box-shadow: 0 18px 40px rgba(23, 49, 58, 0.12);
}

.related-card span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    color: var(--manual-accent-strong);
    font-weight: 600;
}

.article-shell {
    max-width: 920px;
    padding-top: 28px;
    padding-bottom: 10px;
}

.breadcrumb {
    margin-bottom: 18px;
    color: var(--manual-muted);
    font-size: 0.94rem;
}

.breadcrumb a {
    color: var(--manual-accent-strong);
    text-decoration: none;
}

.part-hero {
    padding: 28px 30px;
    background:
        radial-gradient(circle at top right, rgba(248, 225, 195, 0.75), transparent 28%),
        linear-gradient(135deg, rgba(216, 239, 232, 0.98), rgba(255, 255, 255, 0.94));
}

.part-meta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    border-radius: 999px;
    background: rgba(13, 148, 136, 0.12);
    color: var(--manual-accent-strong);
    font-size: 0.92rem;
    font-weight: 700;
}

.article-block .section-card {
    margin-top: 18px;
}

.section-card ul,
.section-card ol {
    margin: 14px 0 0;
    padding-left: 20px;
    color: var(--manual-muted);
    line-height: 1.75;
}

.section-card li + li {
    margin-top: 10px;
}

.list-strong li strong,
.section-card strong {
    color: var(--manual-ink);
}

.table-wrap {
    overflow-x: auto;
    margin-top: 16px;
    border: 1px solid rgba(23, 49, 58, 0.08);
    border-radius: 16px;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(255, 255, 255, 0.92);
}

.specs-table th,
.specs-table td {
    padding: 14px 16px;
    border-bottom: 1px solid rgba(23, 49, 58, 0.08);
    text-align: left;
    vertical-align: top;
}

.specs-table th {
    width: 38%;
    background: rgba(216, 239, 232, 0.5);
    color: var(--manual-ink);
}

.specs-table tr:last-child th,
.specs-table tr:last-child td {
    border-bottom: 0;
}

.article-figure {
    margin: 18px 0 0;
}

.manual-zoom-link {
    display: block;
    border-radius: 20px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    cursor: zoom-in;
}

.manual-zoom-link picture {
    display: block;
}

.manual-zoom-link img {
    cursor: zoom-in;
    transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.manual-zoom-link:hover img,
.manual-zoom-link:focus-visible img,
.manual-zoom-link:focus-within img{
    transform: scale(1.01);
}

.manual-zoom-link:focus-visible {
    outline: 3px solid rgba(13, 148, 136, 0.45);
    outline-offset: 6px;
}

.article-figure img {
    width: 100%;
    display: block;
    border-radius: 20px;
    box-shadow: 0 14px 34px rgba(23, 49, 58, 0.12);
}

.article-figure figcaption {
    margin-top: 12px;
    color: var(--manual-muted);
    font-size: 0.92rem;
    line-height: 1.6;
}

.manual-lightbox-open {
    overflow: hidden;
}

.manual-lightbox {
    position: fixed;
    inset: 0;
    z-index: 12000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: clamp(16px, 3vw, 30px);
    background: rgba(8, 14, 18, 0.92);
    backdrop-filter: blur(8px);
}

.manual-lightbox.is-open {
    display: flex;
}

.manual-lightbox__dialog {
    position: relative;
    width: min(100%, 1720px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.manual-lightbox__close {
    position: fixed;
    top: 16px;
    right: 16px;
    width: 48px;
    height: 48px;
    border: 0;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
    font-size: 32px;
    line-height: 1;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}

.manual-lightbox__close:hover,
.manual-lightbox__close:focus-visible,
.manual-lightbox__close:focus-within{
    background: rgba(255, 255, 255, 0.28);
    transform: scale(1.04);
}

.manual-lightbox__image {
    display: block;
    width: auto;
    height: auto;
    max-width: min(1680px, 94vw);
    max-height: calc(100vh - 118px);
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 22px 54px rgba(0, 0, 0, 0.4);
}

.manual-lightbox__caption {
    margin: 0;
    max-width: min(980px, 92vw);
    color: rgba(255, 255, 255, 0.86);
    font-size: 0.95rem;
    line-height: 1.6;
    text-align: center;
}

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

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

.mini-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(216, 239, 232, 0.42));
}

.component-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.component-card {
    text-align: center;
    padding: 20px 18px;
}

.component-card img {
    width: auto;
    max-height: 170px;
    object-fit: contain;
}

.component-card h3 {
    margin-top: 16px;
}

.component-card p {
    margin-top: 10px;
    color: var(--manual-muted);
    line-height: 1.65;
}

.manual-link {
    color: var(--manual-accent-strong);
    text-decoration: none;
    font-weight: 600;
}

.nav-buttons {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 34px;
}

.nav-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 18px 22px;
    text-decoration: none;
    color: inherit;
    background: var(--manual-surface);
    border: 1px solid var(--manual-border);
    border-radius: var(--manual-radius-md);
    box-shadow: 0 12px 32px rgba(23, 49, 58, 0.07);
}

.nav-btn small {
    display: block;
    margin-bottom: 5px;
    color: var(--manual-muted);
}

.nav-btn strong {
    color: var(--manual-accent-strong);
}

.nav-btn.next {
    text-align: right;
}

.manual-footer {
    margin-top: 54px;
    padding: 28px 22px 42px;
    text-align: center;
    color: var(--manual-muted);
}

.manual-footer p {
    margin: 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 920px) {
    .hero-shell,
    .intro-grid,
    .feature-grid,
    .question-grid,
    .related-grid,
    .component-grid,
    .dual-grid,
    .mini-grid {
        grid-template-columns: 1fr;
    }

    .hero-copy,
    .hero-media {
        padding: 26px;
    }

    .nav-buttons {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .manual-nav {
        padding: 14px 18px;
    }

    .manual-logo {
        font-size: 22px;
    }

    .manual-nav-links {
        gap: 12px;
        font-size: 0.94rem;
    }

    .content-shell,
    .article-shell {
        padding-left: 18px;
        padding-right: 18px;
    }

    .stats {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

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

    .chapter-arrow {
        display: none;
    }

    .part-hero {
        padding: 24px 22px;
    }

    .section-card,
    .intro-card,
    .feature-card,
    .question-card,
    .related-card,
    .component-card,
    .mini-card {
        padding: 20px;
    }
}

@media (max-width: 520px) {
    .stats {
        grid-template-columns: 1fr;
    }

    .manual-nav-links {
        display: none;
    }

    .hero-copy,
    .hero-media {
        padding: 22px;
    }

    .hero-title,
    .part-hero h1 {
        font-size: 2rem;
    }

    .manual-lightbox__close {
        top: 12px;
        right: 12px;
        width: 44px;
        height: 44px;
        font-size: 28px;
    }

    .manual-lightbox__image {
        max-width: 95vw;
        max-height: calc(100vh - 104px);
    }

    .eyebrow,
    .hero-pill,
    .inline-pill,
    .part-meta {
        font-size: 0.84rem;
    }

    .note-box,
    .disclaimer-box {
        grid-template-columns: 1fr;
    }

    .specs-table th,
    .specs-table td {
        min-width: 220px;
    }
}

/* Standard blog article skin for the manual article set. */
body.manual-body {
    font-family: var(--font-main, "IBM Plex Sans", system-ui, sans-serif);
    color: #333;
    background: #fff;
    line-height: 1.6;
}

body.manual-body img {
    max-width: 100%;
    height: auto;
}

.manual-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.manual-nav {
    max-width: 1200px;
    height: 80px;
    padding: 0 20px;
}

.manual-logo {
    color: #007bff;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 0;
}

.manual-nav-links a {
    color: #333;
    font-weight: 500;
}

.manual-nav-links a:hover,
.manual-link:hover,
.breadcrumb a:hover,
.manual-nav-links a:focus-within,
.manual-link:focus-within,
.breadcrumb a:focus-within{
    color: #0056b3;
}

.content-shell,
.article-shell {
    max-width: 840px;
    padding: 0 20px;
}

.article-shell {
    margin: 100px auto 0;
    padding-top: 40px;
}

.fohow-breadcrumbs,
.breadcrumb {
    max-width: 840px;
    margin: 100px auto 24px;
    padding: 0 20px 15px;
    color: #6b7280;
    font-size: 14px;
    border-bottom: 1px solid #eee;
}

.article-shell > .breadcrumb {
    margin: 0 0 24px;
    padding: 0 0 15px;
}

.fohow-breadcrumbs a,
.breadcrumb a,
.manual-link {
    color: #007bff;
}

.manual-hero {
    padding-top: 0;
}

.manual-hero .content-shell {
    padding-top: 0;
}

.hero-shell {
    display: block;
}

.hero-copy,
.hero-media {
    padding: 0;
}

.hero-copy.panel,
.hero-media.panel,
.part-hero.panel {
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
}

.hero-media {
    margin: 22px 0 28px;
}

.hero-media img,
.article-figure img {
    border-radius: 8px;
    box-shadow: none;
}

.hero-title,
.part-hero h1 {
    margin: 20px 0 16px;
    color: #1f2937;
    font-size: 34px;
    line-height: 1.2;
}

.hero-desc,
.part-hero p,
.intro-card p,
.section-card p,
.question-card p,
.related-card p,
.feature-card p,
.mini-card p,
.component-card p,
.section-card li {
    color: #4b5563;
    line-height: 1.8;
}

.eyebrow,
.part-meta,
.hero-pill,
.inline-pill {
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    background: #f8fafc;
    color: #007bff;
    letter-spacing: 0;
    text-transform: none;
}

.hero-pills {
    gap: 8px;
    margin-top: 18px;
}

.intro-grid,
.feature-grid,
.question-grid,
.related-grid,
.mini-grid,
.dual-grid {
    grid-template-columns: 1fr;
    gap: 18px;
}

.section-card,
.intro-card,
.feature-card,
.question-card,
.related-card,
.component-card,
.mini-card,
.stat-card,
.chapter-card,
.note-box,
.disclaimer-box,
.nav-btn {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    box-shadow: none;
}

.section-card,
.intro-card,
.feature-card,
.question-card,
.related-card,
.component-card,
.mini-card {
    padding: 24px;
}

.feature-card::after {
    display: none;
}

.intro-card h2,
.section-card h2,
.toc-title,
.related-title {
    color: #1f2937;
    font-size: 24px;
    line-height: 1.3;
}

.feature-card h3,
.question-card h3,
.related-card h3,
.section-card h3,
.component-card h3,
.mini-card h3,
.chapter-title {
    color: #1f2937;
}

.stats {
    gap: 12px;
}

.stat-value,
.chapter-meta,
.related-card span,
.nav-btn strong {
    color: #007bff;
}

.chapter-card:hover,
.related-card:hover,
.chapter-card:focus-within,
.related-card:focus-within{
    border-color: #007bff;
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(0, 123, 255, 0.1);
}

.chapter-number {
    border-radius: 8px;
    background: #007bff;
}

.note-box,
.disclaimer-box {
    border-left: 4px solid #f59e0b;
    background: #fff7e6;
    color: #6b4e16;
}

.note-box strong,
.disclaimer-box strong,
.list-strong li strong,
.section-card strong {
    color: #1f2937;
}

.table-wrap,
.manual-zoom-link,
.manual-lightbox__image {
    border-radius: 8px;
}

.specs-table th {
    background: #f8fafc;
    color: #1f2937;
}

.manual-footer {
    margin-top: 80px;
    padding: 40px 20px;
    background: #f8f9fa;
    color: #333;
}

.manual-footer p {
    color: #333;
}

@media (max-width: 768px) {
    .manual-nav {
        padding: 0 16px;
    }

    .content-shell,
    .article-shell {
        padding-left: 16px;
        padding-right: 16px;
    }

    .hero-title,
    .part-hero h1 {
        font-size: 28px;
        line-height: 1.3;
    }

    .intro-card h2,
    .section-card h2,
    .toc-title,
    .related-title {
        font-size: 24px;
    }

    .section-card,
    .intro-card,
    .feature-card,
    .question-card,
    .related-card,
    .component-card,
    .mini-card,
    .chapter-card {
        padding: 20px;
    }
}