:root {
  color-scheme: light;
  --font-body: "New York", "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --font-ui: "Avenir Next", "Segoe UI", Inter, sans-serif;
  --font-mono: "SFMono-Regular", ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
  --radius-chip: 999px;
  --radius-card: 16px;
  --radius-panel: 22px;
  --border-soft: 1px;
  --border-strong: 2px;
  --content-width: 88rem;
  --reading-width: 46rem;
  --transition-fast: 180ms ease;
}

:root,
:root[data-theme="light"] {
  --color-base: #eee6dd;
  --color-mantle: #e6dbd1;
  --color-crust: #ddd0c6;
  --color-surface: rgba(221, 208, 198, 0.44);
  --color-surface-strong: rgba(221, 208, 198, 0.72);
  --color-border: rgba(87, 82, 121, 0.16);
  --color-border-strong: rgba(87, 82, 121, 0.3);
  --color-text: #575279;
  --color-text-soft: #615c84;
  --color-text-faint: #797593;
  --color-accent: #1a7da4;
  --color-peach: #dd7f67;
  --color-rose: #c46884;
  --color-green: #6f8d59;
  --color-yellow: #b08b22;
  --color-shadow: rgba(87, 82, 121, 0.08);
  --color-backdrop: rgba(87, 82, 121, 0.35);
  --color-code: rgba(221, 208, 198, 0.62);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --color-base: #303446;
  --color-mantle: #292c3c;
  --color-crust: #232634;
  --color-surface: rgba(81, 86, 108, 0.34);
  --color-surface-strong: rgba(81, 86, 108, 0.62);
  --color-border: rgba(198, 208, 245, 0.16);
  --color-border-strong: rgba(198, 208, 245, 0.28);
  --color-text: #c6d0f5;
  --color-text-soft: #b5bddc;
  --color-text-faint: #9399b2;
  --color-accent: #11b7c5;
  --color-peach: #ef9f76;
  --color-rose: #ea999c;
  --color-green: #a6d189;
  --color-yellow: #e5c890;
  --color-shadow: rgba(17, 17, 27, 0.3);
  --color-backdrop: rgba(17, 17, 27, 0.76);
  --color-code: rgba(35, 38, 52, 0.92);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.96rem + 0.22vw, 1.14rem);
  line-height: 1.72;
  color: var(--color-text);
  background:
    linear-gradient(90deg, rgba(26, 125, 164, 0.05), transparent 12rem),
    linear-gradient(180deg, var(--color-base), color-mix(in srgb, var(--color-base) 78%, white));
}

a {
  color: var(--color-accent);
  text-decoration-color: color-mix(in srgb, var(--color-accent) 45%, transparent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

a:hover {
  color: color-mix(in srgb, var(--color-accent) 82%, var(--color-text));
}

button,
input,
textarea,
select {
  font: inherit;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  padding: 0.75rem 1rem;
  border-radius: 0 0 0.8rem 0.8rem;
  background: var(--color-accent);
  color: var(--color-base);
  z-index: 20;
}

.skip-link:focus {
  top: 0;
}

.site-header,
.site-main,
.site-footer {
  width: min(calc(100% - 2rem), var(--content-width));
  margin: 0 auto;
}

.site-header {
  padding-top: 1.5rem;
}

.site-header__inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.25rem 1.4rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.site-header__brand-block {
  display: grid;
  gap: 0.35rem;
}

.site-brand {
  display: inline-flex;
  flex-direction: column;
  gap: 0.1rem;
  text-decoration: none;
  color: inherit;
}

.site-brand__eyebrow,
.page-heading__eyebrow,
.article-hero__eyebrow,
.series-nav__label {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.site-brand__title {
  color: var(--color-text);
  font-family: var(--font-ui);
  font-size: clamp(1.5rem, 1.3rem + 0.5vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.site-brand__context {
  margin: 0;
  max-width: 32rem;
  color: var(--color-text-faint);
  font-size: 0.98rem;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--font-ui);
  font-size: 1.02rem;
}

.site-nav a {
  color: var(--color-text-soft);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 0.15rem;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.theme-toggle,
.search-shell__input,
.post-modal__close {
  border-radius: 0.9rem;
}

.header-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 0.9rem;
  background: var(--color-surface);
  color: var(--color-accent);
  font-family: var(--font-ui);
  font-size: 0.96rem;
  font-weight: 600;
  text-decoration: none;
}

.header-chip:hover,
.header-chip:focus-visible {
  background: var(--color-surface-strong);
  color: var(--color-accent);
}

.theme-toggle {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-accent);
  width: 3.25rem;
  height: 3.25rem;
  cursor: pointer;
}

.search-shell {
  position: relative;
  display: grid;
  gap: 0.5rem;
  padding: 1.35rem 0 0.3rem;
}

.search-shell__label {
  font-family: var(--font-ui);
  font-size: 0.96rem;
  color: var(--color-text-soft);
}

.search-shell__input {
  width: 100%;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.16);
  color: var(--color-text);
  padding: 1rem 1.15rem;
  font-size: 1.05rem;
}

.search-shell__input::placeholder {
  color: var(--color-text-faint);
}

.search-shell__help {
  margin: 0;
  color: var(--color-text-faint);
}

.search-results {
  position: absolute;
  inset: auto 0 0;
  transform: translateY(calc(100% + 0.25rem));
  z-index: 10;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-base);
  box-shadow: 0 20px 50px var(--color-shadow);
  padding: 1rem;
}

.search-results__list {
  display: grid;
  gap: 0.8rem;
}

.search-result {
  padding: 0.95rem 1rem;
  border-radius: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.search-result h2 {
  margin: 0 0 0.25rem;
  color: var(--color-text);
  font-size: 1.35rem;
  font-family: var(--font-ui);
}

.search-result p {
  margin: 0.45rem 0 0;
}

.search-result__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  color: var(--color-text-faint);
  font-family: var(--font-ui);
  font-size: 0.85rem;
}

.site-main {
  padding: 1.2rem 0 3.5rem;
}

.page-shell {
  display: grid;
  gap: 2rem;
}

.page-heading {
  padding: 1.25rem 0 0.25rem;
}

.page-heading h1,
.article-hero h1 {
  margin: 0;
  color: var(--color-text);
  font-family: var(--font-ui);
  font-size: clamp(2.8rem, 2rem + 3vw, 4.9rem);
  line-height: 1.02;
  font-weight: 900;
  letter-spacing: -0.06em;
}

.page-heading__summary,
.article-hero__summary {
  max-width: 42rem;
  margin: 1rem 0 0;
  color: var(--color-text-soft);
  font-size: clamp(1.06rem, 1rem + 0.3vw, 1.28rem);
}

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

.browse-panel__section,
.listing-section,
.series-listing,
.article-page,
.tag-group {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  padding: 1.25rem 1.35rem;
}

.browse-panel__section h2,
.section-heading h2,
.tag-group h2,
.series-listing h2,
.article-prose h2 {
  margin: 0 0 0.85rem;
  color: var(--color-peach);
  font-family: var(--font-ui);
  font-size: clamp(1.6rem, 1.4rem + 0.6vw, 2.15rem);
  font-weight: 300;
  line-height: 1.1;
}

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tag-chip,
.tag-chip--button,
.series-chip,
.series-chip--button {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-chip);
  border: 1px solid rgba(26, 125, 164, 0.18);
  background: rgba(26, 125, 164, 0.08);
  color: var(--color-accent);
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: 0.88rem;
}

.tag-chip--button,
.series-chip--button {
  cursor: pointer;
}

.tag-chip--button.is-active,
.series-chip--button.is-active,
.tag-chip:hover,
.series-chip:hover,
.series-chip--button:hover {
  background: rgba(26, 125, 164, 0.16);
  border-color: rgba(26, 125, 164, 0.34);
}

.listing-section {
  padding-top: 1.1rem;
}

.post-list {
  display: grid;
  gap: 0.9rem;
}

.post-card {
  border-left: 4px solid rgba(26, 125, 164, 0.45);
  border-radius: 0 1rem 1rem 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.post-card__link {
  display: block;
  padding: 1rem 1.1rem 0.85rem;
  text-decoration: none;
  color: inherit;
}

.post-card__meta,
.article-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  color: var(--color-text-faint);
  font-family: var(--font-ui);
  font-size: 0.84rem;
  text-transform: lowercase;
}

.post-card__title {
  margin: 0.45rem 0 0.35rem;
  color: var(--color-text);
  font-family: var(--font-ui);
  font-size: clamp(1.5rem, 1.25rem + 0.8vw, 2.2rem);
  line-height: 1.08;
  font-weight: 750;
  letter-spacing: -0.04em;
}

.post-card__summary {
  margin: 0;
  max-width: 44rem;
  color: var(--color-text-soft);
}

.post-card__tags,
.article-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0 1.1rem 1rem;
}

.article-page {
  max-width: calc(var(--reading-width) + 4rem);
  margin: 0 auto;
  padding: 1.5rem 1.5rem 2rem;
}

.article-hero {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.article-hero__eyebrow {
  margin-bottom: 0.6rem;
}

.article-prose {
  padding-top: 1.5rem;
}

.article-prose > :first-child {
  margin-top: 0;
}

.article-prose h1,
.article-prose h2,
.article-prose h3,
.article-prose h4,
.article-prose h5,
.article-prose h6 {
  font-family: var(--font-ui);
  letter-spacing: -0.03em;
}

.article-prose h1 {
  color: var(--color-text);
  font-size: clamp(2.2rem, 1.8rem + 1.5vw, 3.2rem);
  line-height: 1.08;
  font-weight: 900;
}

.article-prose h2 {
  padding-bottom: 0.22rem;
  border-bottom: 2px solid color-mix(in srgb, var(--color-rose) 70%, transparent);
}

.article-prose h3 {
  color: var(--color-green);
  font-size: 1.5rem;
  font-weight: 700;
}

.article-prose h4,
.article-prose h5,
.article-prose h6 {
  color: var(--color-text-soft);
}

.article-prose p,
.article-prose ul,
.article-prose ol,
.article-prose blockquote,
.article-prose pre,
.article-prose table {
  max-width: var(--reading-width);
}

.article-prose code,
.article-prose pre {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

.article-prose code {
  background: var(--color-code);
  padding: 0.15rem 0.35rem;
  border-radius: 0.35rem;
}

.article-prose pre {
  overflow-x: auto;
  padding: 1rem 1.1rem;
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  background: var(--color-code);
}

.article-prose hr {
  border: 0;
  border-top: 1px solid var(--color-border-strong);
  margin: 2rem 0;
}

.article-prose blockquote {
  margin: 1.5rem 0;
  padding: 0.1rem 0 0.1rem 1rem;
  border-left: 3px solid var(--color-accent);
  color: var(--color-text-soft);
}

.article-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.article-prose th,
.article-prose td {
  padding: 0.7rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.callout {
  max-width: var(--reading-width);
  margin: 1.5rem 0;
  border-radius: 1rem;
  border: 1px solid rgba(26, 125, 164, 0.22);
  background: rgba(26, 125, 164, 0.08);
  overflow: hidden;
}

.callout__title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.8rem 0.95rem;
  border-bottom: 1px solid rgba(26, 125, 164, 0.18);
  font-family: var(--font-ui);
  color: var(--color-text);
}

.callout__icon {
  color: var(--color-accent);
}

.callout__content {
  padding: 0.95rem;
}

.callout--warning {
  border-color: rgba(176, 139, 34, 0.28);
  background: rgba(176, 139, 34, 0.08);
}

.callout--warning .callout__icon {
  color: var(--color-yellow);
}

.callout--danger,
.callout--error {
  border-color: rgba(196, 104, 132, 0.28);
  background: rgba(196, 104, 132, 0.08);
}

.callout--danger .callout__icon,
.callout--error .callout__icon {
  color: var(--color-rose);
}

.series-nav {
  display: grid;
  gap: 0.9rem;
  margin-top: 2rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--color-border);
}

.series-nav__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

.page-copy {
  max-width: var(--reading-width);
}

.tag-groups {
  display: grid;
  gap: 1rem;
}

.hidden-by-filter {
  display: none;
}

[data-js="enabled"] .no-js-fallback {
  display: none;
}

.post-modal[hidden] {
  display: none;
}

.post-modal {
  position: fixed;
  inset: 0;
  z-index: 40;
}

.post-modal__backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-backdrop);
  backdrop-filter: blur(6px);
}

.post-modal__dialog {
  position: relative;
  width: min(calc(100% - 2rem), 58rem);
  max-height: calc(100vh - 2rem);
  margin: 1rem auto;
  overflow: auto;
  border-radius: 1.5rem;
  background: var(--color-base);
  border: 1px solid var(--color-border-strong);
  box-shadow: 0 30px 80px var(--color-shadow);
}

.post-modal__close {
  position: sticky;
  top: 1rem;
  float: right;
  margin: 1rem 1rem 0 0;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface-strong);
  color: var(--color-text);
  cursor: pointer;
  z-index: 2;
}

.post-modal__content {
  clear: both;
}

.site-footer {
  padding: 0 0 3rem;
  color: var(--color-text-faint);
  font-size: 0.95rem;
}

.site-footer p {
  margin: 0;
  padding-top: 0.8rem;
  border-top: 1px solid var(--color-border);
}

.search-shell__input:focus,
.theme-toggle:focus,
.tag-chip--button:focus,
.post-card__link:focus,
.series-chip:focus,
.post-modal__close:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

@media (max-width: 1100px) {
  body::before,
  body::after {
    display: none;
  }
}

@media (max-width: 860px) {
  .site-header__inner {
    flex-direction: column;
    align-items: stretch;
  }

  .site-header__actions {
    justify-content: space-between;
  }

  .browse-panel {
    grid-template-columns: 1fr;
  }

  .page-heading h1,
  .article-hero h1 {
    font-size: clamp(2.5rem, 1.8rem + 7vw, 4rem);
  }
}

@media (max-width: 640px) {
  .site-header,
  .site-main,
  .site-footer {
    width: min(calc(100% - 1.25rem), var(--content-width));
  }

  .site-nav {
    gap: 0.75rem;
  }

  .theme-toggle {
    width: 2.85rem;
    height: 2.85rem;
  }

  .header-chip {
    min-height: 2.85rem;
  }

  .browse-panel__section,
  .listing-section,
  .series-listing,
  .article-page,
  .tag-group {
    padding: 1rem;
    border-radius: 1.1rem;
  }

  .post-card__link,
  .post-card__tags {
    padding-left: 0.9rem;
    padding-right: 0.9rem;
  }

  .section-heading {
    flex-direction: column;
    align-items: flex-start;
  }
}