:root {
    --bg: #f5f7f6;
    --surface: #ffffff;
    --surface-soft: #eef3f2;
    --ink: #182021;
    --muted: #647170;
    --faint: #8a9896;
    --line: #d6dedd;
    --line-strong: #aebcba;
    --cyan: #1f747b;
    --cyan-soft: #dceced;
    --amber: #9a6a18;
    --amber-soft: #f1e7d2;
    --code-bg: #111819;
    --code-ink: #edf4f2;
    --measure: 1220px;
    --reading: 760px;
    --rail: 250px;
    --wide: 1080px;
    --radius: 14px;
    --mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
    color-scheme: light;
    font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
    font-synthesis: none;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-size: 16px;
    line-height: 1.7;
    text-rendering: optimizeLegibility;
}

a { color: inherit; }
img { display: block; max-width: 100%; height: auto; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; font: inherit; }

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

.skip-link {
    position: fixed;
    z-index: 50;
    top: .75rem;
    left: .75rem;
    padding: .55rem .8rem;
    background: var(--ink);
    color: var(--surface);
    transform: translateY(-180%);
}

.skip-link:focus { transform: translateY(0); }

.gh-outer { padding-inline: clamp(1.1rem, 4vw, 4rem); }
.gh-inner { width: min(100%, var(--measure)); margin-inline: auto; }
.site-shell { min-height: 100vh; display: flex; flex-direction: column; }
.site-main { flex: 1; }

/* Global shell */

.site-header {
    position: sticky;
    z-index: 20;
    top: 0;
    border-bottom: 1px solid color-mix(in srgb, var(--line) 88%, transparent);
    background: color-mix(in srgb, var(--bg) 92%, transparent);
    backdrop-filter: blur(16px);
}

.site-header-inner {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 74px;
    gap: 1.2rem;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    min-width: max-content;
    text-decoration: none;
    font-size: 1.16rem;
    font-weight: 850;
    letter-spacing: .08em;
}

.site-logo { max-height: 32px; width: auto; }
.site-title { line-height: 1; }

.site-context {
    padding-left: 1.1rem;
    border-left: 1px solid var(--line);
    color: var(--faint);
    font-family: var(--mono);
    font-size: .63rem;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 1.1rem;
    margin-left: auto;
    font-size: .8rem;
    font-weight: 650;
}

.site-nav a {
    color: var(--muted);
    text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav .nav-current {
    color: var(--cyan);
}

.nav-toggle {
    display: none;
    margin-left: auto;
    padding: .2rem .25rem;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.nav-toggle-mark { display: block; font-size: 1.45rem; line-height: 1; }

.eyebrow,
.journal-mark,
.project-kicker,
.project-index,
.rail-label,
.post-card-meta,
.article-meta,
.article-kicker,
.journal-note {
    font-family: var(--mono);
}

.eyebrow {
    display: inline-block;
    margin: 0;
    color: var(--cyan);
    font-size: .66rem;
    font-weight: 800;
    letter-spacing: .09em;
    line-height: 1.4;
    text-decoration: none;
    text-transform: uppercase;
}

.text-link {
    color: var(--cyan);
    font-weight: 750;
    text-decoration: none;
}

.text-link:hover,
.text-link:focus-visible { text-decoration: underline; text-underline-offset: .2em; }

.muted-link { color: var(--muted); }

/* Writing index */

.journal-hero {
    padding-block: clamp(3.5rem, 8vw, 7rem) clamp(2.5rem, 5vw, 4rem);
}

.journal-hero-inner { max-width: var(--measure); }

.journal-mark {
    margin: 0 0 1.1rem;
    color: var(--cyan);
    font-size: .68rem;
    font-weight: 800;
    letter-spacing: .11em;
}

.journal-hero h1 {
    max-width: 980px;
    margin: 0;
    font-size: clamp(2.9rem, 6vw, 5.3rem);
    line-height: .98;
    letter-spacing: -.065em;
    word-break: keep-all;
}

.journal-summary {
    max-width: 760px;
    margin: 1.6rem 0 0;
    color: var(--muted);
    font-size: clamp(1.05rem, 1.6vw, 1.25rem);
    line-height: 1.62;
    word-break: keep-all;
}

.journal-note {
    max-width: 900px;
    margin: .9rem 0 0;
    color: var(--faint);
    font-size: .68rem;
    line-height: 1.6;
}

.journal-local-nav {
    display: flex;
    flex-wrap: wrap;
    gap: .65rem 1.25rem;
    margin-top: clamp(2rem, 5vw, 3.5rem);
    padding-top: 1rem;
    border-top: 1px solid var(--line-strong);
    font-family: var(--mono);
    font-size: .68rem;
}

.journal-local-nav a {
    color: var(--muted);
    text-decoration: none;
}

.journal-local-nav a:hover,
.journal-local-nav a:focus-visible { color: var(--cyan); }

.latest-section,
.project-journals,
.archive-section,
.related-section,
.journal-about {
    padding-block: clamp(3rem, 6vw, 5.2rem);
    border-top: 1px solid var(--line);
    scroll-margin-top: 88px;
}

.section-heading {
    margin-bottom: 1.15rem;
}

.section-heading h2 {
    max-width: 760px;
    margin: .28rem 0 0;
    font-size: clamp(1.8rem, 3vw, 2.55rem);
    line-height: 1.08;
    letter-spacing: -.045em;
}

.section-heading-split {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 2rem;
}

.section-note {
    max-width: 420px;
    margin: 0;
    color: var(--muted);
    font-size: .88rem;
    line-height: 1.55;
    text-align: right;
}

/* Cards */

.post-card { min-width: 0; }
.post-card-body { min-width: 0; }
.post-card-kicker { min-height: 1rem; }

.post-card-title {
    margin: .5rem 0 .55rem;
    font-size: 1.45rem;
    line-height: 1.15;
    letter-spacing: -.04em;
    word-break: keep-all;
}

.post-card-title a { text-decoration: none; }
.post-card-title a:hover,
.post-card-title a:focus-visible { color: var(--cyan); }

.post-card-excerpt {
    max-width: 720px;
    margin: 0 0 .9rem;
    color: var(--muted);
    font-size: .93rem;
    line-height: 1.62;
}

.post-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem .8rem;
    color: var(--faint);
    font-size: .65rem;
}

.post-card-image {
    display: block;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.post-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .22s ease;
}

.post-card-image:hover img,
.post-card-image:focus-visible img { transform: scale(1.02); }

.post-card-lead {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, .55fr);
    gap: clamp(2rem, 5vw, 5rem);
    align-items: end;
    padding: 1.5rem 0 2.3rem;
    border-top: 2px solid var(--ink);
    border-bottom: 1px solid var(--line-strong);
}

.post-card-lead:not(:has(.post-card-image)) {
    grid-template-columns: minmax(0, 1fr);
}

.post-card-lead .post-card-image {
    grid-column: 2;
    grid-row: 1;
    aspect-ratio: 1.35;
}

.post-card-lead .post-card-body {
    grid-column: 1;
    grid-row: 1;
}

.post-card-lead .post-card-title {
    max-width: 900px;
    margin: .75rem 0 1rem;
    font-size: clamp(2.35rem, 4.5vw, 4.35rem);
    line-height: 1.01;
    letter-spacing: -.06em;
}

.post-card-lead .post-card-excerpt {
    max-width: 720px;
    font-size: 1rem;
}

.post-list {
    border-top: 1px solid var(--line-strong);
    counter-reset: article-list;
}

.post-card-list {
    display: grid;
    grid-template-columns: 3.1rem minmax(0, 1fr) minmax(180px, 270px);
    gap: 1.3rem;
    align-items: center;
    padding-block: .4rem;
    border-bottom: 1px solid var(--line);
}

.post-card-list::before {
    content: counter(article-list, decimal-leading-zero);
    counter-increment: article-list;
    align-self: start;
    padding-top: 1.45rem;
    color: var(--faint);
    font-family: var(--mono);
    font-size: .66rem;
}

.post-card-list .post-card-body {
    grid-column: 2;
    padding-block: 1.15rem;
}

.post-card-list .post-card-title {
    font-size: clamp(1.25rem, 2vw, 1.72rem);
}

.post-card-list .post-card-image {
    grid-column: 3;
    grid-row: 1;
    aspect-ratio: 1.6;
}

.post-card-list:not(:has(.post-card-image)) {
    grid-template-columns: 3.1rem minmax(0, 1fr);
}

.post-card-list:not(:has(.post-card-image)) .post-card-body { grid-column: 2; }

.empty-state {
    margin: 0;
    padding: 1.4rem 0;
    color: var(--muted);
}

/* Project journals */

.project-journal-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--line-strong);
    border-left: 1px solid var(--line);
}

.project-journal-card {
    min-width: 0;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface) 55%, transparent);
}

.project-journal-main {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 1rem;
    min-height: 250px;
    padding: 1.2rem;
    color: inherit;
    text-decoration: none;
}

.project-journal-main:hover,
.project-journal-main:focus-visible { background: var(--surface); }

.project-index {
    color: var(--cyan);
    font-size: .66rem;
}

.project-kicker {
    margin: 0 0 .5rem;
    color: var(--faint);
    font-size: .62rem;
    letter-spacing: .06em;
}

.project-journal-main h3 {
    margin: 0 0 .75rem;
    font-size: clamp(1.45rem, 2.1vw, 2rem);
    line-height: 1.06;
    letter-spacing: -.045em;
}

.project-journal-main p:last-child {
    margin: 0;
    color: var(--muted);
    font-size: .9rem;
    line-height: 1.58;
}

.project-arrow { color: var(--faint); }

.project-latest {
    margin: 0;
    padding: .9rem 1.2rem 1.1rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: .8rem;
}

.project-latest span {
    display: block;
    margin-bottom: .3rem;
    color: var(--amber);
    font-family: var(--mono);
    font-size: .6rem;
    font-weight: 800;
    letter-spacing: .08em;
}

.project-latest a { text-decoration: none; }
.project-latest a:hover,
.project-latest a:focus-visible { color: var(--cyan); }

/* About band */

.journal-about-inner {
    display: grid;
    grid-template-columns: 160px minmax(0, 1fr) auto;
    gap: clamp(1.5rem, 4vw, 4rem);
    align-items: start;
}

.journal-about-copy h2 {
    max-width: 760px;
    margin: 0 0 .85rem;
    font-size: clamp(1.8rem, 3.4vw, 3rem);
    line-height: 1.06;
    letter-spacing: -.05em;
}

.journal-about-copy p {
    max-width: 740px;
    margin: 0;
    color: var(--muted);
}

/* Article */

.article-shell { padding-block: clamp(3rem, 6vw, 5.2rem); }

.article-header {
    max-width: 1020px;
    margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.article-kicker {
    display: flex;
    gap: .8rem;
    align-items: center;
    color: var(--faint);
    font-size: .65rem;
    letter-spacing: .08em;
}

.article-kicker a {
    color: var(--cyan);
    font-weight: 800;
    text-decoration: none;
}

.article-title {
    max-width: 1000px;
    margin: .9rem 0 1rem;
    font-size: clamp(2.7rem, 5.8vw, 5.35rem);
    line-height: .99;
    letter-spacing: -.065em;
    word-break: keep-all;
}

.article-excerpt {
    max-width: 780px;
    margin: 0 0 1.4rem;
    color: var(--muted);
    font-size: clamp(1.02rem, 1.6vw, 1.2rem);
    line-height: 1.65;
}

.article-meta-block {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 780px;
    gap: 1rem;
    padding-block: .8rem;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.article-meta {
    display: flex;
    gap: .55rem;
    color: var(--faint);
    font-size: .65rem;
}

.article-author {
    color: var(--muted);
    font-size: .78rem;
    text-decoration: none;
}

.article-hero {
    width: min(100%, var(--wide));
    margin: 0 0 clamp(2.4rem, 5vw, 4.2rem);
}

.article-hero img {
    width: 100%;
    max-height: 680px;
    border-radius: var(--radius);
    object-fit: cover;
}

.article-hero figcaption {
    margin-top: .55rem;
    color: var(--muted);
    font-size: .8rem;
}

.article-layout {
    display: grid;
    grid-template-columns: minmax(0, var(--reading)) minmax(210px, var(--rail));
    gap: clamp(2.5rem, 6vw, 6rem);
    align-items: start;
}

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

.article-rail {
    position: sticky;
    top: 100px;
    display: grid;
    gap: 1.6rem;
}

.rail-section {
    padding-top: .85rem;
    border-top: 1px solid var(--line-strong);
}

.rail-label {
    margin: 0 0 .65rem;
    color: var(--faint);
    font-size: .6rem;
    font-weight: 800;
    letter-spacing: .09em;
}

.rail-primary-link {
    color: var(--cyan);
    font-size: .87rem;
    font-weight: 750;
    text-decoration: none;
}

.rail-copy,
.rail-empty {
    display: block;
    margin: .45rem 0 0;
    color: var(--muted);
    font-size: .75rem;
    line-height: 1.5;
}

.article-toc {
    display: grid;
    gap: .42rem;
}

.article-toc a {
    color: var(--muted);
    font-size: .75rem;
    line-height: 1.45;
    text-decoration: none;
}

.article-toc a[data-level="3"] { padding-left: .65rem; color: var(--faint); }

.article-toc a:hover,
.article-toc a:focus-visible,
.article-toc a.is-active { color: var(--cyan); }

.article-footer {
    margin-top: clamp(3rem, 6vw, 4.8rem);
    padding-top: 1.2rem;
    border-top: 1px solid var(--line-strong);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem .9rem;
    font-size: .8rem;
}

.article-tags a {
    color: var(--cyan);
    text-decoration: none;
}

/* Long form */

.gh-content {
    min-width: 0;
    font-size: clamp(1.03rem, 1.25vw, 1.09rem);
    line-height: 1.84;
}

.gh-content > * { margin-block: 1.45em; }
.gh-content > :first-child { margin-top: 0; }
.gh-content > :last-child { margin-bottom: 0; }

.gh-content h2,
.gh-content h3,
.gh-content h4 {
    color: var(--ink);
    font-weight: 800;
    line-height: 1.18;
    letter-spacing: -.04em;
    word-break: keep-all;
}

.gh-content h2 {
    margin-top: 2.8em;
    padding-top: .7rem;
    border-top: 1px solid var(--line);
    font-size: clamp(1.7rem, 2.7vw, 2.25rem);
}

.gh-content h3 {
    margin-top: 2.25em;
    font-size: clamp(1.35rem, 2vw, 1.7rem);
}

.gh-content h4 { font-size: 1.16rem; }

.gh-content p,
.gh-content ul,
.gh-content ol { max-width: var(--reading); }

.gh-content a {
    color: var(--cyan);
    text-underline-offset: .17em;
}

.gh-content blockquote {
    margin-inline: 0;
    padding: .9rem 1.05rem;
    border-left: 3px solid var(--amber);
    background: var(--amber-soft);
    color: #55451f;
}

.gh-content ul,
.gh-content ol { padding-left: 1.25rem; }

.gh-content li + li { margin-top: .35rem; }
.gh-content hr { border: 0; border-top: 1px solid var(--line); }
.gh-content strong { font-weight: 800; }

.gh-content code,
.gh-content pre { font-family: var(--mono); }

.gh-content code {
    padding: .1em .28em;
    border: 1px solid var(--line);
    border-radius: 4px;
    background: var(--surface-soft);
    font-size: .84em;
}

.gh-content pre {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    margin-inline: 0;
    padding: 1.2rem 1.3rem;
    border-left: 3px solid var(--cyan);
    border-radius: 0 var(--radius) var(--radius) 0;
    background: var(--code-bg);
    color: var(--code-ink);
    font-size: .82rem;
    line-height: 1.68;
    tab-size: 2;
}

.gh-content pre code {
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    font-size: inherit;
}

.gh-content table {
    width: 100%;
    min-width: 560px;
    border-collapse: collapse;
    font-size: .87rem;
    line-height: 1.45;
}

.gh-content .table-scroll {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    margin-block: 2rem;
}

.gh-content th,
.gh-content td {
    padding: .7rem .8rem;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

.gh-content th {
    border-top: 2px solid var(--ink);
    font-weight: 800;
}

.gh-content img { width: 100%; border-radius: var(--radius); }

.gh-content figcaption {
    margin-top: .55rem;
    color: var(--muted);
    font-size: .8rem;
}

.gh-content .kg-width-wide {
    width: min(calc(100vw - 2.2rem), var(--wide));
    max-width: none;
    margin-left: 50%;
    transform: translateX(-50%);
}

.gh-content .kg-width-full {
    width: 100vw;
    max-width: none;
    margin-left: 50%;
    transform: translateX(-50%);
}

/* Technical diagrams and charts */

.content-diagram,
.content-chart {
    width: 100%;
    max-width: 100%;
    margin-block: 2.8rem;
}

.diagram-surface,
.chart-surface {
    overflow-x: auto;
    padding: 1rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
}

.diagram-surface svg,
.chart-surface svg {
    display: block;
    width: max-content;
    min-width: 100%;
    max-width: none;
    height: auto;
}

.diagram-source,
.chart-source {
    margin-top: .7rem;
    color: var(--muted);
    font-size: .78rem;
}

.diagram-source summary,
.chart-source summary {
    cursor: pointer;
    color: var(--cyan);
}

.diagram-source pre,
.chart-source pre { margin: .75rem 0 0; }

.diagram-error,
.chart-error {
    padding: .8rem 1rem;
    border-left: 3px solid var(--amber);
    background: var(--amber-soft);
    color: #5f4717;
    font-size: .88rem;
}

.chart-grid { stroke: #d8e0df; stroke-width: 1; }
.chart-axis { stroke: #899796; stroke-width: 1; }
.chart-label { fill: #647170; font: 12px "Pretendard Variable", Pretendard, sans-serif; }
.chart-value { fill: #182021; font: 700 12px var(--mono); }

/* Archive / pages / about */

.archive-header,
.about-hero,
.page-shell {
    padding-block: clamp(3rem, 7vw, 6rem);
}

.archive-header {
    border-bottom: 1px solid var(--line);
}

.archive-header h1,
.about-hero h1,
.page-header h1 {
    max-width: 900px;
    margin: .55rem 0 .85rem;
    font-size: clamp(2.7rem, 5.5vw, 5rem);
    line-height: 1;
    letter-spacing: -.06em;
}

.archive-header p:not(.eyebrow),
.about-hero p:not(.eyebrow),
.page-header p {
    max-width: 720px;
    margin: 0;
    color: var(--muted);
}

.archive-actions {
    display: flex;
    gap: 1.1rem;
    margin-top: 1.4rem;
    font-size: .82rem;
}

.author-avatar {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    border-radius: 50%;
    object-fit: cover;
}

.page-inner { max-width: 900px; }
.page-header { margin-bottom: 2.2rem; }

.about-body {
    padding-block: 0 clamp(4rem, 8vw, 7rem);
}

.about-layout {
    display: grid;
    grid-template-columns: minmax(0, var(--reading)) minmax(180px, 240px);
    gap: clamp(2.5rem, 7vw, 7rem);
    align-items: start;
}

.about-links {
    position: sticky;
    top: 100px;
    display: grid;
    gap: .65rem;
    padding-top: .85rem;
    border-top: 1px solid var(--line-strong);
}

.about-links a {
    color: var(--cyan);
    font-size: .82rem;
    font-weight: 700;
    text-decoration: none;
}

.about-content h2 {
    margin-top: 2.4em;
    color: var(--cyan);
}

.about-content h3 {
    margin-top: 1.6em;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
}

.related-grid .post-card {
    padding-top: 1rem;
    border-top: 1px solid var(--line-strong);
}

.pagination {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1.8rem;
    color: var(--muted);
    font-size: .8rem;
}

.pagination-link {
    color: var(--ink);
    text-decoration: none;
}

.charaweave-slot[hidden] { display: none; }

/* Footer */

.site-footer {
    padding-block: 2.8rem;
    border-top: 1px solid var(--line-strong);
}

.site-footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
}

.footer-label {
    margin: 0 0 .3rem;
    font-weight: 850;
    letter-spacing: .08em;
}

.footer-description {
    max-width: 520px;
    margin: 0;
    color: var(--muted);
    font-size: .78rem;
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    gap: .7rem 1rem;
    align-items: flex-start;
    font-size: .78rem;
}

.footer-nav a {
    color: var(--muted);
    text-decoration: none;
}

.footer-nav a:hover,
.footer-nav a:focus-visible { color: var(--cyan); }

:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--cyan) 55%, white);
    outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        scroll-behavior: auto !important;
        transition-duration: .001ms !important;
        animation-duration: .001ms !important;
    }
}

@media (max-width: 980px) {
    .project-journal-grid { grid-template-columns: 1fr; }
    .project-journal-main { min-height: auto; }

    .article-layout,
    .about-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .article-rail,
    .about-links {
        position: static;
        max-width: var(--reading);
    }

    .article-rail {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        order: 2;
        margin-top: 2.2rem;
    }

    .related-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
    .site-header-inner { min-height: 64px; }
    .site-context { display: none; }
    .nav-toggle { display: inline-flex; }

    .site-nav {
        display: none;
        position: absolute;
        z-index: 5;
        inset: 64px 0 auto;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: .4rem 0 .7rem;
        border-bottom: 1px solid var(--line-strong);
        background: var(--surface);
    }

    .site-nav.is-open { display: flex; }
    .site-nav a { padding: .7rem 0; border-bottom: 1px solid var(--line); }
    .site-nav a:last-child { border-bottom: 0; }

    .journal-hero { padding-block: 2.8rem 2.4rem; }
    .journal-hero h1 { font-size: clamp(2.7rem, 13vw, 4rem); }
    .journal-summary { font-size: 1.02rem; }

    .section-heading-split,
    .site-footer-inner,
    .journal-about-inner {
        display: block;
    }

    .section-note {
        margin-top: .7rem;
        text-align: left;
    }

    .post-card-lead {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .post-card-lead .post-card-image,
    .post-card-lead .post-card-body {
        grid-column: auto;
        grid-row: auto;
    }

    .post-card-lead .post-card-image { order: -1; }
    .post-card-lead .post-card-title { font-size: clamp(2rem, 10vw, 3rem); }

    .post-card-list,
    .post-card-list:not(:has(.post-card-image)) {
        display: block;
        padding-block: .4rem;
    }

    .post-card-list::before {
        display: block;
        padding-top: .8rem;
    }

    .post-card-list .post-card-body { padding-block: .2rem 1rem; }
    .post-card-list .post-card-image { margin: .8rem 0 1rem; aspect-ratio: 1.7; }

    .journal-about-copy { margin: 1rem 0 1.2rem; }

    .article-title {
        font-size: clamp(2.35rem, 12vw, 3.8rem);
        line-height: 1.01;
    }

    .article-meta-block {
        align-items: flex-start;
        flex-direction: column;
        gap: .35rem;
    }

    .article-rail { display: block; }
    .rail-section + .rail-section { margin-top: 1.4rem; }

    .gh-content { font-size: 1.03rem; }
    .gh-content .kg-width-wide { width: calc(100vw - 1rem); }
    .gh-content pre { padding: .9rem; font-size: .76rem; }
    .diagram-surface svg,
    .chart-surface svg { min-width: 500px; }

    .archive-actions,
    .footer-nav {
        margin-top: 1rem;
    }
}