/* ============================================================
   ejstembler.com — site.css
   Self-contained. Drop in one <link> tag. No framework needed.
   Tabler Icons loaded separately (see layout.html).
   ============================================================ */

:root {
    --color-bg: #ffffff;
    --color-bg-secondary: #f7f6f3;
    --color-border: rgba(0, 0, 0, 0.1);
    --color-border-medium: rgba(0, 0, 0, 0.2);

    --color-text-primary: #1a1a18;
    --color-text-secondary: #5a5a56;
    --color-text-tertiary: #9a9a94;

    --color-accent: #185fa5;
    --color-accent-bg: #e6f1fb;
    --color-accent-text: #0c447c;
    --color-link: #0f5f9f;
    --color-link-hover: #083f72;
    --color-link-underline: rgba(15, 95, 159, 0.6);
    --color-link-bg: rgba(15, 95, 159, 0.08);

    /* Category pills */
    --pill-eng-bg: #e6f1fb;
    --pill-eng-text: #0c447c;
    --pill-ml-bg: #eeedfe;
    --pill-ml-text: #3c3489;
    --pill-elec-bg: #faeeda;
    --pill-elec-text: #633806;
    --pill-rob-bg: #e1f5ee;
    --pill-rob-text: #085041;
    --pill-cook-bg: #faece7;
    --pill-cook-text: #712b13;
    --pill-diy-bg: #eaf3de;
    --pill-diy-text: #27500a;
    --pill-cars-bg: #f1efe8;
    --pill-cars-text: #444441;
    --pill-travel-bg: #fbeaf0;
    --pill-travel-text: #72243e;
    --pill-data-bg: #e1f5ee;
    --pill-data-text: #085041;

    --badge-grade-bg: #eaf3de;
    --badge-grade-text: #27500a;
    --badge-cert-bg: #e6f1fb;
    --badge-cert-text: #0c447c;

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    --font-mono: "SFMono-Regular", "Fira Code", "Roboto Mono", Menlo, Consolas, monospace;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-pill: 20px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #18181a;
        --color-bg-secondary: #222224;
        --color-border: rgba(255, 255, 255, 0.08);
        --color-border-medium: rgba(255, 255, 255, 0.15);

        --color-text-primary: #e8e8e4;
        --color-text-secondary: #9a9a96;
        --color-text-tertiary: #606060;

        --color-accent: #4a9ede;
        --color-accent-bg: #0c2840;
        --color-accent-text: #85b7eb;
        --color-link: #9fd3ff;
        --color-link-hover: #c7e7ff;
        --color-link-underline: rgba(159, 211, 255, 0.78);
        --color-link-bg: rgba(159, 211, 255, 0.14);

        --pill-eng-bg: #0c2840;
        --pill-eng-text: #85b7eb;
        --pill-ml-bg: #1e1b40;
        --pill-ml-text: #afa9ec;
        --pill-elec-bg: #2a1e08;
        --pill-elec-text: #fac775;
        --pill-rob-bg: #062418;
        --pill-rob-text: #5dcaa5;
        --pill-cook-bg: #2a1208;
        --pill-cook-text: #f0997b;
        --pill-diy-bg: #162608;
        --pill-diy-text: #97c459;
        --pill-cars-bg: #242422;
        --pill-cars-text: #b4b2a9;
        --pill-travel-bg: #260e1a;
        --pill-travel-text: #ed93b1;
        --pill-data-bg: #062418;
        --pill-data-text: #5dcaa5;

        --badge-grade-bg: #162608;
        --badge-grade-text: #97c459;
        --badge-cert-bg: #0c2840;
        --badge-cert-text: #85b7eb;
    }
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    font-size: 16px;
    overflow-x: hidden;
}
body {
    font-family: var(--font-sans);
    color: var(--color-text-primary);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a {
    color: inherit;
    text-decoration: none;
}
a:hover {
    color: var(--color-accent);
}
img {
    display: block;
    max-width: 100%;
}

.site-wrap {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 1.25rem 4rem;
    width: 100%;
}

/* Nav */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 0;
    border-bottom: 1px solid var(--color-border);
    gap: 1rem;
}
.topbar-brand {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-shrink: 0;
}
.topbar-brand .site-name {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 500;
}
.topbar-brand .site-since {
    font-size: 11px;
    color: var(--color-text-tertiary);
}
.topbar-nav {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
}
.topbar-nav a {
    font-size: 12px;
    color: var(--color-link);
}
.topbar-nav a:hover,
.topbar-nav a.active {
    color: var(--color-link-hover);
}
.topbar-icons {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
}
.topbar-icons a {
    font-size: 17px;
    color: var(--color-text-tertiary);
}

/* Error pages */
.error-page {
    padding: 5rem 0 6rem;
}
.error-code {
    font-family: var(--font-mono);
    font-size: clamp(3.5rem, 18vw, 8rem);
    line-height: 0.95;
    color: var(--color-text-primary);
    letter-spacing: 0;
    margin: 1.5rem 0 1rem;
}
.error-actions {
    margin-top: 1.25rem;
}
.inline-link {
    color: var(--color-link);
}
.link,
.inline-link,
.topbar-nav a,
.about-intro a,
.lang-cloud a,
.page-desc a,
.resource-list a,
.resource-table a,
.archive-categories a,
.post-body a,
.sidebar-card a,
.site-footer a,
.stat-label a,
.breadcrumb a,
.post-title a,
.book-title a,
.book-authors a,
.widget-title a,
a.widget-title,
.life-card-title a,
.cert-verify-link {
    color: var(--color-link);
    text-decoration: none;
}
.link:hover,
.inline-link:hover,
.topbar-nav a:hover,
.about-intro a:hover,
.lang-cloud a:hover,
.page-desc a:hover,
.resource-list a:hover,
.resource-table a:hover,
.archive-categories a:hover,
.post-body a:hover,
.sidebar-card a:hover,
.site-footer a:hover,
.stat-label a:hover,
.breadcrumb a:hover,
.post-title a:hover,
.book-title a:hover,
.book-authors a:hover,
.widget-title a:hover,
a.widget-title:hover,
.life-card-title a:hover,
.cert-verify-link:hover {
    color: var(--color-link-hover);
    background: transparent;
    text-decoration: underline;
    text-decoration-color: currentColor;
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.18em;
    text-decoration-skip-ink: auto;
}
.link:focus-visible,
.inline-link:focus-visible,
.topbar-nav a:focus-visible,
.about-intro a:focus-visible,
.lang-cloud a:focus-visible,
.page-desc a:focus-visible,
.resource-list a:focus-visible,
.resource-table a:focus-visible,
.archive-categories a:focus-visible,
.post-body a:focus-visible,
.sidebar-card a:focus-visible,
.site-footer a:focus-visible,
.stat-label a:focus-visible,
.breadcrumb a:focus-visible,
.post-title a:focus-visible,
.book-title a:focus-visible,
.book-authors a:focus-visible,
.widget-title a:focus-visible,
a.widget-title:focus-visible,
.life-card-title a:focus-visible,
.cert-verify-link:focus-visible {
    outline: 2px solid var(--color-link-underline);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}
.topbar-icons a:hover {
    color: var(--color-text-secondary);
}
@media (max-width: 640px) {
    html,
    body {
        max-width: 100vw;
    }
    .site-wrap {
        max-width: 100vw;
        width: 100vw;
        padding: 0 1rem 3rem;
    }
    .topbar {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        align-items: start;
        gap: 0.75rem 1rem;
    }
    .topbar-brand {
        grid-column: 1 / -1;
        min-width: 0;
    }
    .topbar-nav {
        gap: 0.8rem 1rem;
        min-width: 0;
    }
    .topbar-icons {
        grid-column: 1 / -1;
        gap: 8px;
        justify-content: flex-start;
    }
}
@media (max-width: 380px) {
    .topbar {
        grid-template-columns: 1fr;
    }
    .topbar-icons {
        justify-content: flex-start;
    }
}

/* Eyebrow label */
.eyebrow {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    padding-bottom: 8px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}
.eyebrow .count {
    font-family: var(--font-mono);
    font-size: 10px;
    background: var(--color-bg-secondary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}
.eyebrow::after {
    content: "";
    flex: 1;
    height: 0.5px;
    background: var(--color-border);
}
a.eyebrow {
    color: var(--color-link);
    text-decoration: none;
}
a.eyebrow:hover {
    color: var(--color-link-hover);
    text-decoration: underline;
    text-decoration-color: currentColor;
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.18em;
    text-decoration-skip-ink: auto;
}

/* Pills */
.pill {
    display: inline-block;
    font-size: 11px;
    font-weight: 500;
    padding: 3px 9px;
    border-radius: var(--radius-pill);
    white-space: nowrap;
    line-height: 1.4;
}
.pill-sm {
    font-size: 10px;
    padding: 2px 7px;
    border-radius: var(--radius-sm);
}
.pill-eng {
    background: var(--pill-eng-bg);
    color: var(--pill-eng-text);
}
.pill-ml {
    background: var(--pill-ml-bg);
    color: var(--pill-ml-text);
}
.pill-elec {
    background: var(--pill-elec-bg);
    color: var(--pill-elec-text);
}
.pill-rob {
    background: var(--pill-rob-bg);
    color: var(--pill-rob-text);
}
.pill-cook {
    background: var(--pill-cook-bg);
    color: var(--pill-cook-text);
}
.pill-diy {
    background: var(--pill-diy-bg);
    color: var(--pill-diy-text);
}
.pill-cars {
    background: var(--pill-cars-bg);
    color: var(--pill-cars-text);
}
.pill-travel {
    background: var(--pill-travel-bg);
    color: var(--pill-travel-text);
}
.pill-data {
    background: var(--pill-data-bg);
    color: var(--pill-data-text);
}
.pill-tag {
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border: 0.5px solid var(--color-border);
}

/* Identity (homepage hero) */
.identity {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 1.75rem 0;
    border-bottom: 0.5px solid var(--color-border);
}
.identity > div:last-child {
    min-width: 0;
}
@media (max-width: 520px) {
    .identity {
        display: block;
        padding: 1.5rem 0;
    }
    .identity-avatar {
        margin-bottom: 0.85rem;
    }
    .identity-name,
    .identity-bio,
    .tag-cloud {
        max-width: min(100%, 22rem);
    }
}
.identity-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: block;
    object-fit: cover;
    background: var(--color-bg-muted);
    flex-shrink: 0;
}
.identity-name {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 3px;
}
.identity-bio {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 10px;
}
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

/* Stream grid */
.stream {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}
@media (max-width: 640px) {
    .stream {
        grid-template-columns: 1fr;
    }
    .post-row-body {
        max-width: min(100%, 21rem);
    }
    .page-desc,
    .library-filters {
        max-width: min(100%, 22rem);
    }
}

/* Post rows */
.post-list {
    display: flex;
    flex-direction: column;
}
.post-row {
    display: flex;
    gap: 12px;
    padding: 13px 0;
    border-bottom: 0.5px solid var(--color-border);
}
.post-row-body {
    min-width: 0;
    flex: 1;
}
.post-row:first-child {
    padding-top: 0;
}
.post-row:last-child {
    border-bottom: none;
}
.post-pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 5px;
    padding-top: 12px;
}
.post-page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 7px;
    border: 0.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    font-size: 11px;
    line-height: 1;
}
.post-page-link:hover {
    border-color: var(--color-border-medium);
    color: var(--color-link-hover);
}
.post-page-link.active {
    border-color: var(--color-accent);
    background: var(--color-accent-bg);
    color: var(--color-accent-text);
}
.post-thumb {
    width: 86px;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--color-bg-muted);
}
.post-thumb img,
.widget-thumb img,
.life-card-image img,
.page-banner img,
.post-detail-banner img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.post-cats {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 4px;
}
.post-title {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: 4px;
}
.post-title a:hover {
    color: var(--color-link-hover);
}
.post-excerpt {
    font-size: 12px;
    color: var(--color-text-secondary);
    line-height: 1.55;
    margin-bottom: 5px;
    overflow-wrap: anywhere;
}
.post-meta {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-text-tertiary);
}

/* Archive */
.archive {
    display: flex;
    flex-direction: column;
    gap: 28px;
}
.archive-year h2 {
    margin: 0 0 10px;
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-primary);
}
.archive-list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 0.5px solid var(--color-border);
}
.archive-list li {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: baseline;
    padding: 8px 0;
    border-bottom: 0.5px solid var(--color-border);
    font-size: 13px;
    line-height: 1.5;
}
.archive-categories {
    color: var(--color-text-tertiary);
    font-size: 11px;
}
.archive-categories a {
    color: var(--color-link);
}
.archive-categories a:hover {
    color: var(--color-link-hover);
}

/* Sidebar */
.widget {
    margin-bottom: 2rem;
}
.widget-list {
    display: flex;
    flex-direction: column;
}
.widget-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 0.5px solid var(--color-border);
    font-size: 12px;
}
.widget-item:last-child {
    border-bottom: none;
}
.widget-thumb {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--color-bg-muted);
}
.widget-title {
    color: var(--color-text-primary);
    line-height: 1.4;
    flex: 1;
}
.widget-views {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-text-tertiary);
    white-space: nowrap;
    flex-shrink: 0;
}

/* Life & Hobbies */
.life-section {
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 0.5px solid var(--color-border);
}
.life-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
}
.life-card {
    border: 0.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1rem;
    background: var(--color-bg);
}
.life-card-image {
    display: block;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius-md);
    overflow: hidden;
    margin: -0.35rem -0.35rem 0.8rem;
    background: var(--color-bg-muted);
}
.life-card-icon {
    font-size: 20px;
    color: var(--color-text-tertiary);
    margin-bottom: 8px;
}
.life-card-label {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 6px;
}
.life-card-title {
    font-size: 13px;
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: 3px;
}
.life-card-date {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-text-tertiary);
}

/* Certifications */
.cert-group {
    margin-bottom: 2.5rem;
}
.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 10px;
}
.cert-card {
    border: 0.5px solid var(--color-border);
    border-top: 4px solid var(--cert-accent, var(--color-accent));
    border-radius: var(--radius-lg);
    padding: 1rem 1.1rem;
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.cert-card-cloud {
    --cert-accent: #2563eb;
}
.cert-card-ml-data {
    --cert-accent: #8b5cf6;
}
.cert-card-microsoft {
    --cert-accent: #22c55e;
}
.cert-card-language {
    --cert-accent: #f97316;
}
.cert-card-title {
    font-size: 13px;
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: 3px;
}
.cert-card-issuer {
    font-size: 11px;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}
.cert-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 6px;
}
.cert-date {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-text-tertiary);
}
.cert-card-logos {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-top: 1rem;
}
.cert-card-logos a {
    display: inline-flex;
}
.cert-card-logos img {
    width: auto;
    height: auto;
    max-width: 130px;
    max-height: 52px;
    object-fit: contain;
}
.badge-grade {
    font-family: var(--font-mono);
    font-size: 11px;
    background: var(--badge-grade-bg);
    color: var(--badge-grade-text);
    padding: 2px 7px;
    border-radius: var(--radius-sm);
}
.badge-cert {
    font-family: var(--font-mono);
    font-size: 11px;
    background: var(--badge-cert-bg);
    color: var(--badge-cert-text);
    padding: 2px 7px;
    border-radius: var(--radius-sm);
}
.cert-verify-link {
    font-size: 11px;
    display: flex;
    align-items: center;
    gap: 3px;
}

/* Page header (inner pages) */
.page-header {
    padding: 1.75rem 0 1.5rem;
    border-bottom: 0.5px solid var(--color-border);
    margin-bottom: 2rem;
}
.breadcrumb {
    font-size: 11px;
    font-family: var(--font-mono);
    color: var(--color-text-tertiary);
    margin-bottom: 6px;
}
.breadcrumb .current {
    color: var(--color-text-secondary);
}
.page-title {
    font-size: 22px;
    font-weight: 500;
}
.page-desc {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

/* About */
.about-layout {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: 2.5rem;
}
.about-layout > div {
    min-width: 0;
}
@media (max-width: 640px) {
    .about-layout {
        grid-template-columns: 1fr;
    }
}
.about-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: block;
    object-fit: cover;
    background: var(--color-bg-muted);
    margin-bottom: 1.25rem;
}
.about-intro-row {
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 1.25rem;
    align-items: start;
    margin-bottom: 1.25rem;
}
.about-intro-row .about-avatar {
    margin-bottom: 0;
}
.about-intro-row .about-intro {
    margin-bottom: 0;
}
@media (max-width: 520px) {
    .about-intro-row {
        grid-template-columns: 56px minmax(0, 1fr);
        gap: 1rem;
    }
    .about-intro-row .about-avatar {
        width: 56px;
        height: 56px;
    }
}
.about-intro {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 1.25rem;
}
.about-note {
    margin-bottom: 0.75rem;
}
.about-kaizen {
    font-size: 12px;
    font-family: var(--font-mono);
    color: var(--color-text-tertiary);
    padding: 10px 12px;
    border-left: 2px solid var(--color-border-medium);
    margin: 1rem 0 1.5rem;
}
.about-section-title {
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 0.75rem;
    margin-top: 1.5rem;
}
.lang-cloud {
    display: block;
}
.lang-cloud p {
    margin: 0;
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-text-secondary);
}
.lang-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 3px 8px;
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    border: 0.5px solid var(--color-border);
}
.lang-tag.featured {
    background: var(--color-accent-bg);
    color: var(--color-accent-text);
    border-color: transparent;
}
.sidebar-card {
    border: 0.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1rem 1.1rem;
    background: var(--color-bg);
    margin-bottom: 1rem;
}
.sidebar-card-title {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    margin-bottom: 0.75rem;
}
.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 7px 0;
    border-bottom: 0.5px solid var(--color-border);
    font-size: 12px;
}
.stat-row:last-child {
    border-bottom: none;
}
.stat-label {
    color: var(--color-text-secondary);
}
.stat-val {
    font-family: var(--font-mono);
    font-weight: 500;
}
.social-list {
    display: flex;
    flex-direction: column;
}
.social-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 0;
    border-bottom: 0.5px solid var(--color-border);
    font-size: 12px;
    color: var(--color-link);
}
.social-item:last-child {
    border-bottom: none;
}
.social-item i {
    font-size: 15px;
    color: var(--color-text-tertiary);
}
.social-item:hover i {
    color: var(--color-link-hover);
}

/* Post detail */
.page-banner,
.post-detail-banner {
    aspect-ratio: 3 / 1;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-bg-muted);
    margin: 0 0 2rem;
}
.page-banner picture,
.post-detail-banner picture {
    display: block;
    width: 100%;
    height: 100%;
}
.post-detail-header {
    padding: 1.75rem 0 1.5rem;
    border-bottom: 0.5px solid var(--color-border);
    margin-bottom: 2rem;
}
.post-detail-title {
    font-size: 22px;
    font-weight: 500;
    line-height: 1.3;
    margin-bottom: 0.75rem;
}
.post-detail-meta {
    font-size: 12px;
    font-family: var(--font-mono);
    color: var(--color-text-tertiary);
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}
.post-body {
    width: 100%;
    max-width: 680px;
    overflow-wrap: anywhere;
    word-break: break-word;
}
.post-body * {
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-word;
}
.post-body h2 {
    font-size: 18px;
    font-weight: 500;
    margin: 2rem 0 0.75rem;
}
.post-body h3 {
    font-size: 15px;
    font-weight: 500;
    margin: 1.5rem 0 0.5rem;
}
.post-body p {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.75;
    margin-bottom: 1rem;
}
.post-body ul,
.post-body ol {
    margin: 0 0 1rem 1.5rem;
    color: var(--color-text-secondary);
    font-size: 15px;
}
.post-body li {
    margin-bottom: 0.25rem;
}
.post-body a {
    overflow-wrap: anywhere;
    word-break: break-word;
}
.post-body a:hover {
    color: var(--color-link-hover);
}
.post-body pre {
    background: var(--color-bg-secondary);
    border: 0.5px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    margin-bottom: 1.25rem;
}
.post-body code {
    font-family: var(--font-mono);
    font-size: 13px;
    background: var(--color-bg-secondary);
    padding: 1px 5px;
    border-radius: var(--radius-sm);
}
.post-body pre code {
    background: none;
    padding: 0;
}
.post-body blockquote {
    border-left: 2px solid var(--color-border-medium);
    padding: 0.5rem 1rem;
    color: var(--color-text-tertiary);
    font-size: 14px;
    margin: 1rem 0;
}
.post-body img {
    border-radius: var(--radius-md);
    border: 0.5px solid var(--color-border);
    margin: 1.25rem 0;
    max-width: 100%;
}
.post-body table,
.post-body iframe,
.post-body embed,
.post-body object {
    max-width: 100%;
}
@media (max-width: 640px) {
    .post-row {
        gap: 10px;
    }
    .post-thumb {
        width: 72px;
    }
    .widget-thumb {
        display: none;
    }
    .page-banner,
    .post-detail-banner {
        aspect-ratio: 16 / 9;
        margin-bottom: 1.5rem;
    }
    .post-body {
        max-width: min(100%, 22rem) !important;
    }
    .post-body,
    .post-body p,
    .post-body li,
    .post-body h2,
    .post-body h3,
    .post-body blockquote {
        width: 100%;
        max-width: 100% !important;
    }
    .post-body ul,
    .post-body ol {
        width: 100%;
        max-width: 100% !important;
        margin-left: 0;
        padding-left: 1.25rem;
    }
}

/* Footer */
.site-footer {
    margin-top: 3rem;
    padding-top: 1.25rem;
    border-top: 0.5px solid var(--color-border);
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-text-tertiary);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.site-footer > * {
    min-width: 0;
}
.site-footer a {
    color: var(--color-link) !important;
}
.site-footer a:hover {
    color: var(--color-link-hover) !important;
}
@media (max-width: 640px) {
    .site-footer {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Resource lists */
.resource-layout {
    display: grid;
    gap: 2rem;
}
.resource-list {
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 13px;
    line-height: 1.45;
}
.resource-list li {
    border-bottom: 0.5px solid var(--color-border);
    padding: 10px 0;
    font-size: inherit;
    line-height: inherit;
}
.resource-table {
    width: 100%;
    border-collapse: collapse;
}
.resource-table th {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    padding: 0 0 8px;
    text-align: left;
    border-bottom: 0.5px solid var(--color-border-medium);
}
.resource-table th:first-child {
    width: 64px;
}
.resource-table td {
    border-bottom: 0.5px solid var(--color-border);
    padding: 10px 12px 10px 0;
    vertical-align: top;
    font-size: 13px;
    line-height: 1.45;
}
.resource-table td:first-child {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--color-text-tertiary);
    white-space: nowrap;
}
.resource-table small {
    color: var(--color-text-secondary);
    font-size: 11px;
}

/* ── Library page ────────────────────────────────────────── */
.library-meta {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
}

.library-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 1.75rem;
}

.filter-btn {
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    border: 0.5px solid var(--color-border-medium);
    background: var(--color-bg);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: none;
}

.filter-btn:hover {
    color: var(--color-text-primary);
}

.filter-btn.active {
    background: var(--color-text-primary);
    color: var(--color-bg);
    border-color: var(--color-text-primary);
}

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

.book-table thead tr {
    border-bottom: 0.5px solid var(--color-border-medium);
}

.book-table th {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    padding: 0 0 8px;
    text-align: left;
}

.book-table th:first-child {
    width: 48px;
}
.book-table th:nth-child(2) {
    width: 52px;
}

.book-table tbody tr {
    border-bottom: 0.5px solid var(--color-border);
}

.book-table tbody tr:last-child {
    border-bottom: none;
}

.book-table tbody tr[hidden] {
    display: none;
}

.book-cover-cell {
    padding: 10px 12px 10px 0;
    vertical-align: top;
}

.book-cover {
    width: 40px;
    height: 56px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 0.5px solid var(--color-border);
    background: var(--color-bg-secondary);
    display: block;
}

.book-cover-placeholder {
    width: 40px;
    height: 56px;
    border-radius: var(--radius-sm);
    border: 0.5px solid var(--color-border);
    background: var(--color-bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-family: var(--font-mono);
    color: var(--color-text-tertiary);
}

.book-year-cell {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--color-text-tertiary);
    vertical-align: top;
    padding: 14px 16px 10px 0;
    white-space: nowrap;
}

.book-info-cell {
    padding: 10px 0;
    vertical-align: top;
}

.book-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-primary);
    line-height: 1.4;
    margin-bottom: 3px;
    overflow-wrap: anywhere;
}

.book-authors {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
    line-height: 1.4;
    overflow-wrap: anywhere;
}

.book-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 3px;
}

.book-tag {
    font-family: var(--font-mono);
    font-size: 9px;
    line-height: 1.35;
    padding: 1px 5px;
    background: var(--color-bg-secondary);
    color: var(--color-text-tertiary);
    border-radius: var(--radius-sm);
    border: 0.5px solid var(--color-border);
}

.library-count {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--color-text-tertiary);
    margin-top: 1.25rem;
}
@media (max-width: 520px) {
    .book-table,
    .book-table tbody,
    .book-table tr,
    .book-table td {
        display: block;
        width: 100%;
    }
    .book-table {
        max-width: min(100%, 22rem);
    }
    .book-table thead {
        display: none;
    }
    .book-table tbody tr {
        display: grid;
        grid-template-columns: 40px minmax(0, 1fr);
        gap: 0 10px;
        max-width: min(100%, 22rem);
        padding: 12px 0;
    }
    .book-cover-cell {
        grid-column: 1;
        grid-row: 1 / span 3;
        padding: 0;
        width: auto;
    }
    .book-cover,
    .book-cover-placeholder {
        width: 34px;
        height: 48px;
    }
    .book-year-cell {
        grid-column: 2;
        grid-row: 1;
        width: auto;
        padding: 0 0 3px;
    }
    .book-info-cell {
        grid-column: 2;
        grid-row: 2;
        min-width: 0;
        padding: 0;
    }
    .book-title,
    .book-authors,
    .book-tags {
        max-width: min(100%, 17rem);
    }
}