:root {
  --bg: #fbfbf8;
  --surface: rgba(255, 255, 253, 0.78);
  --surface-strong: rgba(255, 255, 252, 0.94);
  --text: #1f2937;
  --muted: #667085;
  --border: rgba(185, 177, 153, 0.72);
  --border-strong: rgba(143, 136, 118, 0.74);
  --accent-primary: #5f62c9;
  --accent-strong: #464fb8;
  --accent-note: #0ea5e9;
  --accent-warning: #f59e0b;
  --accent-success: #10b981;
  --code-bg: #0d1420;
  --code-text: #e8eef7;
  --pattern-line: rgba(107, 138, 176, 0.2);
  --pattern-node: rgba(176, 86, 86, 0.15);
  --pattern-glow: rgba(255, 255, 255, 0.35);
  --shadow-soft: 0 14px 28px rgba(54, 46, 32, 0.12);
  --shadow-stack:
    0 1px 0 rgba(255, 255, 255, 0.72) inset,
    0 0 0 1px rgba(255, 255, 255, 0.32) inset,
    0 18px 34px rgba(66, 54, 37, 0.12);
  --text-xs: 0.8rem;
  --text-sm: 0.9rem;
  --text-base: 1.05rem;
  --text-lg: 1.25rem;
  --text-xl: 1.6rem;
  --text-2xl: 2.2rem;
  --text-3xl: 2.8rem;
  --serif: "IBM Plex Serif", Georgia, serif;
  --sans: "IBM Plex Sans", "Segoe UI", Arial, sans-serif;
  --mono: "JetBrains Mono", Consolas, monospace;
  --written: "Architects Daughter", "Segoe Print", cursive;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    linear-gradient(90deg, transparent 0 72px, var(--pattern-node) 72px 74px, transparent 74px 100%),
    linear-gradient(var(--pattern-line) 1px, transparent 1px),
    radial-gradient(circle at 24px 24px, var(--pattern-glow) 0 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.55), rgba(251, 251, 248, 0.94)),
    repeating-linear-gradient(
      0deg,
      rgba(120, 103, 74, 0.025) 0 1px,
      transparent 1px 7px
    );
  background-size:
    auto,
    100% 2rem,
    120px 120px,
    auto,
    auto;
  background-attachment: fixed;
  color: var(--text);
  font: 400 var(--text-base) / 1.7 var(--sans);
  text-rendering: optimizeLegibility;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.7rem 0.9rem;
  border-radius: 8px;
  background: #e8eef7;
  color: #111827;
  text-decoration: none;
  transform: translateY(-140%);
  transition: transform 160ms ease;
}

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

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: color-mix(in srgb, var(--accent-primary) 76%, #111827);
}

a:focus-visible,
button:focus-visible,
[role="button"]:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid rgba(95, 98, 201, 0.28);
  outline-offset: 3px;
}

::selection {
  background: rgba(95, 98, 201, 0.18);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 1rem;
  color: var(--text);
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: 0;
}

p,
ul,
ol,
dl,
pre,
blockquote,
table,
figure {
  margin: 0 0 1.2rem;
}

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

li + li {
  margin-top: 0.35rem;
}

hr {
  margin: 2.5rem 0;
  border: 0;
  border-top: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

th,
td {
  padding: 0.7rem 0.8rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

code,
pre,
kbd {
  font-family: var(--mono);
}

code {
  padding: 0.12rem 0.35rem;
  border-radius: 4px;
  background: rgba(95, 98, 201, 0.12);
  color: #2f3a8f;
  font-size: 0.9em;
}

pre {
  overflow-x: auto;
  padding: 1rem 1.1rem;
  border-radius: 8px;
  background: var(--code-bg);
  color: var(--code-text);
  box-shadow: var(--shadow-soft);
}

pre code {
  padding: 0;
  background: transparent;
  color: inherit;
  font-size: 0.9rem;
}

blockquote {
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--accent-primary);
  background: linear-gradient(180deg, rgba(255, 253, 247, 0.9), rgba(246, 243, 232, 0.92));
  border-radius: 0 8px 8px 0;
  box-shadow: var(--shadow-stack);
}

figure {
  margin: 2rem 0;
}

figcaption {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: var(--text-sm);
}

.journal-shell {
  width: min(calc(100% - 2rem), 1060px);
  margin: 0 auto;
}

.site-main {
  min-height: calc(100vh - 180px);
}

.site-main:focus {
  outline: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(185, 177, 153, 0.8);
  background:
    linear-gradient(180deg, rgba(255, 255, 252, 0.92), rgba(249, 249, 245, 0.9));
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset;
}

.site-header__inner,
.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  color: inherit;
  text-decoration: none;
}

.site-brand__mark {
  display: inline-flex;
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.site-brand__mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
}

.site-brand__text {
  display: inline-flex;
  flex-direction: column;
  gap: 0.1rem;
}

.site-brand__name {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
}

.site-brand__meta {
  font-family: var(--written);
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.25;
  text-transform: none;
}

.site-nav,
.site-footer__links,
.journal-actions,
.journal-sidebar__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.site-nav__link,
.journal-button,
.journal-sidebar__links a {
  display: inline-flex;
  min-height: 2.5rem;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 0.85rem;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--muted);
  text-decoration: none;
  transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.site-nav__link:hover,
.site-nav__link.is-current,
.journal-sidebar__links a:hover {
  border-color: var(--border);
  background: var(--surface-strong);
  color: var(--text);
}

.journal-button {
  border-color: var(--border);
  color: var(--text);
  background: linear-gradient(180deg, rgba(255, 255, 253, 0.94), rgba(250, 250, 246, 0.92));
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
}

.journal-button--primary {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: #f8faff;
}

.site-footer {
  border-top: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(250, 250, 246, 0.94), rgba(244, 244, 240, 0.92));
}

.site-footer__copy {
  margin: 0;
  max-width: 42rem;
  color: var(--muted);
  font-size: var(--text-sm);
}

.site-footer__links a {
  color: var(--muted);
}

.journal-home,
.journal-listing,
.journal-article {
  padding: 2.5rem 0 4rem;
}

.journal-home__layout,
.journal-listing__layout,
.journal-article__layout {
  display: grid;
  gap: 2rem;
}

.journal-home__content,
.journal-listing__content,
.journal-article__content {
  min-width: 0;
  padding: 1.5rem 1.6rem 1.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 253, 0.95), rgba(249, 249, 245, 0.96));
  box-shadow: var(--shadow-stack);
  backdrop-filter: blur(10px);
}

.journal-home__header,
.journal-listing__header,
.journal-article__header {
  margin-bottom: 2rem;
}

.breadcrumbs {
  margin-bottom: 0.9rem;
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.8rem;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: var(--text-sm);
}

.breadcrumbs__list li {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
}

.breadcrumbs__list li:not(:last-child)::after {
  content: "/";
  color: var(--border-strong);
}

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

.breadcrumbs__list a:hover {
  color: var(--accent-primary);
}

.journal-kicker,
.journal-sidebar__label,
.journal-list__meta,
.margin-note__label,
.journal-callout__title {
  font-size: 0.98rem;
  font-family: var(--written);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: 0;
  text-transform: none;
}

.journal-kicker,
.journal-list__meta {
  color: var(--muted);
}

.journal-home h1,
.journal-listing h1,
.journal-article h1 {
  max-width: 12ch;
  font-size: clamp(2.45rem, 6vw, 3.5rem);
}

.journal-subtitle {
  max-width: 42rem;
  color: var(--muted);
  font-size: var(--text-lg);
}

.journal-feature,
.journal-list__item,
.journal-sidebar__section,
.journal-callout,
.margin-note {
  border: 1px solid var(--border);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 252, 0.88), rgba(249, 249, 244, 0.9));
  box-shadow: var(--shadow-stack);
  backdrop-filter: blur(10px);
}

.journal-feature {
  margin-bottom: 1.25rem;
  padding: 1.4rem 1.5rem;
  box-shadow: var(--shadow-soft);
}

.journal-feature h2,
.journal-list__item h2 {
  margin-bottom: 0.75rem;
  font-size: clamp(1.6rem, 4vw, 2rem);
}

.journal-list {
  display: grid;
  gap: 1rem;
}

.journal-list__item {
  padding: 1.25rem 1.35rem;
}

.journal-list__item p:last-child,
.journal-feature p:last-child {
  margin-bottom: 0;
}

.journal-list__item h2 a,
.journal-feature h2 a,
.journal-term,
.site-brand {
  text-decoration: none;
}

.journal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1rem;
  margin-bottom: 1rem;
  color: var(--muted);
  font-size: var(--text-sm);
}

.journal-meta span + span::before {
  content: "/";
  margin-right: 1rem;
  color: var(--border-strong);
}

.journal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.journal-tags a {
  display: inline-flex;
  padding: 0.34rem 0.6rem;
  border-radius: 999px;
  background: rgba(255, 255, 250, 0.82);
  border: 1px solid rgba(185, 177, 153, 0.46);
  color: var(--muted);
  text-decoration: none;
  font-size: var(--text-xs);
}

.journal-tags a:hover {
  background: rgba(235, 237, 252, 0.92);
  color: var(--accent-primary);
}

.journal-tags--stacked {
  flex-direction: column;
  align-items: flex-start;
}

.journal-sidebar {
  display: grid;
  gap: 1rem;
  align-self: start;
}

.journal-sidebar--article {
  position: relative;
}

.journal-sidebar__section {
  padding: 1rem 1rem 1.05rem;
}

.journal-sidebar__section p:last-child,
.journal-sidebar__section ul:last-child {
  margin-bottom: 0;
}

.journal-sidebar__label {
  margin-bottom: 0.8rem;
  color: var(--text);
}

.journal-rail-links {
  display: grid;
  gap: 0.8rem;
}

.journal-rail-links a {
  color: var(--text);
  text-decoration: none;
}

.journal-rail-links a:hover {
  color: var(--accent-primary);
}

.journal-sidebar__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.journal-sidebar__list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--border);
}

.journal-sidebar__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.journal-sidebar__list span {
  color: var(--muted);
  font-size: var(--text-sm);
}

.journal-sidebar__list strong {
  font-size: var(--text-sm);
  font-weight: 600;
  text-align: right;
}

.journal-toc nav > ul,
.journal-toc ul {
  margin: 0;
  padding-left: 1rem;
}

.journal-toc li + li {
  margin-top: 0.5rem;
}

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

.journal-toc a:hover {
  color: var(--accent-primary);
}

.inline-toc {
  margin: 0 0 1.8rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 252, 0.9), rgba(249, 249, 245, 0.92));
  box-shadow: var(--shadow-stack);
}

.inline-toc__label {
  margin-bottom: 0.75rem;
  color: var(--text);
  font-size: 0.98rem;
  font-family: var(--written);
  font-weight: 400;
  line-height: 1.25;
  text-transform: none;
}

.inline-toc__list {
  margin: 0;
  padding-left: 1.1rem;
}

.inline-toc__list li + li {
  margin-top: 0.45rem;
}

.inline-toc__list a {
  color: var(--text);
  text-decoration: none;
}

.inline-toc__list a:hover {
  color: var(--accent-primary);
}

.journal-prose {
  max-width: 68ch;
  position: relative;
}

.journal-prose > p:first-of-type {
  font-size: var(--text-lg);
  color: #253041;
}

.journal-prose a:visited,
.journal-list__item h2 a:visited,
.journal-feature h2 a:visited,
.breadcrumbs a:visited,
.inline-toc a:visited,
.journal-rail-links a:visited {
  color: #7b5aa8;
}

.journal-prose h2,
.journal-prose h3,
.journal-prose h4 {
  position: relative;
  margin-top: 2.8rem;
  scroll-margin-top: 6rem;
}

.journal-prose h2 {
  font-size: clamp(1.85rem, 4.2vw, 2.35rem);
}

.journal-prose h3 {
  font-size: clamp(1.4rem, 4vw, 1.8rem);
}

.journal-prose h4 {
  font-size: clamp(1.15rem, 3vw, 1.3rem);
}

.journal-heading-anchor {
  position: absolute;
  left: -1.1em;
  top: 0.08em;
  color: var(--border-strong);
  opacity: 0;
  text-decoration: none;
  transition: opacity 160ms ease, color 160ms ease;
}

.journal-prose h2:hover .journal-heading-anchor,
.journal-prose h3:hover .journal-heading-anchor,
.journal-prose h4:hover .journal-heading-anchor,
.journal-heading-anchor:focus {
  opacity: 1;
}

.journal-heading-anchor:hover {
  color: var(--accent-primary);
}

.journal-prose img {
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
}

.journal-prose .highlight,
.journal-prose pre {
  margin: 1.4rem 0;
}

.journal-code-block {
  margin: 1.4rem 0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.journal-code-block pre {
  margin: 0;
  border-radius: 0 0 8px 8px;
  box-shadow: none;
}

.journal-code-block__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid rgba(229, 231, 235, 0.12);
  background:
    linear-gradient(180deg, rgba(17, 24, 39, 0.96), rgba(15, 23, 42, 0.92));
  color: #cbd5e1;
}

.journal-code-block__label {
  font-size: 0.95rem;
  font-family: var(--written);
  line-height: 1.2;
  text-transform: none;
}

.journal-code-block__copy {
  border: 1px solid rgba(229, 231, 235, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: inherit;
  font: inherit;
  padding: 0.38rem 0.65rem;
  cursor: pointer;
}

.journal-code-block__copy:hover,
.journal-code-block__copy[data-copied="true"] {
  background: rgba(95, 98, 201, 0.22);
  border-color: rgba(95, 98, 201, 0.35);
}

.journal-callout {
  margin: 1.5rem 0;
  padding: 1rem 1.15rem;
}

.journal-callout > *:last-child {
  margin-bottom: 0;
}

.journal-callout--tldr {
  border-left: 4px solid var(--accent-warning);
  background: linear-gradient(180deg, rgba(255, 252, 243, 0.95), rgba(245, 158, 11, 0.07));
}

.journal-callout--note {
  border-left: 3px solid var(--accent-note);
  background: linear-gradient(180deg, rgba(244, 251, 255, 0.94), rgba(14, 165, 233, 0.06));
}

.journal-callout--summary {
  border-color: var(--border);
  background: linear-gradient(180deg, rgba(245, 255, 249, 0.94), rgba(16, 185, 129, 0.06));
}

.margin-note {
  display: block;
  clear: right;
  float: right;
  width: 220px;
  margin: 0.35rem -260px 1rem 1.5rem;
  padding: 0.8rem 0.95rem;
  color: var(--muted);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-soft);
}

.margin-note > *:last-child {
  margin-bottom: 0;
}

.margin-note__label {
  margin-bottom: 0.55rem;
  color: var(--text);
}

.journal-term-grid {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.journal-term {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  background: linear-gradient(180deg, rgba(255, 255, 252, 0.88), rgba(249, 249, 244, 0.9));
  box-shadow: var(--shadow-stack);
}

.journal-term:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

@media (min-width: 980px) {
  .journal-home__layout,
  .journal-listing__layout,
  .journal-article__layout {
    grid-template-columns: minmax(0, 680px) minmax(220px, 240px);
    justify-content: space-between;
  }

  .journal-sidebar--article {
    position: sticky;
    top: 5.5rem;
  }
}

@media (max-width: 979px) {
  .site-header__inner,
  .site-footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
  }

  .site-brand__mark {
    width: 44px;
    height: 44px;
  }

  .journal-home,
  .journal-listing,
  .journal-article {
    padding-top: 2rem;
  }

  .margin-note {
    float: none;
    width: auto;
    margin: 1rem 0;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 1rem;
  }

  .journal-shell {
    width: min(calc(100% - 1.25rem), 1060px);
  }

  .site-nav,
  .site-footer__links,
  .journal-actions,
  .journal-sidebar__links {
    gap: 0.5rem;
  }

  .site-nav__link,
  .journal-button,
  .journal-sidebar__links a {
    min-height: 2.35rem;
    padding: 0.5rem 0.75rem;
  }

  .journal-subtitle {
    font-size: 1.05rem;
  }

  .journal-home__content,
  .journal-listing__content,
  .journal-article__content {
    padding: 1.15rem 1rem 1.35rem;
  }

  .journal-meta span + span::before {
    margin-right: 0.6rem;
  }

  .journal-heading-anchor {
    display: none;
  }
}