:root {
  --bg: #f4ede0;
  --bg-soft: #ede4d2;
  --card: #fbf6ec;
  --ink-1: #1a1813;
  --ink-2: #736e60;
  --ink-3: #a39c8a;
  --rule: #e1d8c4;
  --rule-strong: #cbbfa6;
  --accent: #c8521e;
  --bg-ok: #dbe7d4;
  --fg-ok: #3e6433;
  --font-display: 'Instrument Serif', 'Noto Serif SC', Georgia, serif;
  --font-body: 'Geist', 'Noto Sans SC', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { background: var(--bg); color: var(--ink-1); }
body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink-1);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
button { font-family: inherit; }
::selection { background: rgba(200, 82, 30, .18); }

.site-shell {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in oklab, var(--bg) 90%, transparent);
  border-bottom: 1px solid var(--rule);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
}
.site-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-1);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 500;
}
.brand img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}
.nav-link {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 14px;
  transition: color .15s ease;
}
.nav-link:hover,
.nav-link.is-active {
  color: var(--ink-1);
}
.nav-actions {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.site-nav .lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  padding: 2px;
  background: color-mix(in oklab, var(--bg) 82%, white);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .55);
}
.site-nav .lang-switch button {
  appearance: none;
  -webkit-appearance: none;
  min-width: 40px;
  height: 36px;
  border: 0 !important;
  border-radius: 999px;
  padding: 0 12px;
  background: transparent;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  box-shadow: none;
  transition: background .15s ease, color .15s ease;
}
.site-nav .lang-switch button.is-active {
  background: var(--ink-1);
  color: var(--bg);
}
.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 12px 18px;
  background: var(--ink-1);
  color: var(--bg);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.nav-cta:hover,
.button:hover {
  background: var(--accent);
}
.button.secondary {
  background: transparent;
  color: var(--ink-1);
  border-color: var(--rule-strong);
}
.button.secondary:hover {
  border-color: var(--ink-1);
  background: transparent;
}

.resource-hero,
.article-hero {
  padding: 82px 0 54px;
}
.eyebrow {
  margin-bottom: 18px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
h1, h2, h3 {
  color: var(--ink-1);
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0;
}
h1 {
  max-width: 20ch;
  margin: 0;
  font-size: clamp(48px, 7vw, 82px);
  line-height: .98;
}
.resource-hero p,
.article-hero p {
  max-width: 62ch;
  margin: 24px 0 0;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.72;
}
.article-meta,
.resource-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
}
.meta-pill {
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  padding: 5px 10px;
  background: var(--card);
  color: var(--ink-1);
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
  gap: 54px;
  padding: 28px 0 88px;
  border-top: 1px solid var(--rule);
}
.filter-panel {
  position: sticky;
  top: 86px;
  align-self: start;
}
.filter-title {
  margin-bottom: 14px;
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.filter-row {
  display: grid;
  gap: 8px;
}
.filter-button {
  width: 100%;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 10px 13px;
  background: transparent;
  color: var(--ink-2);
  font-size: 14px;
  text-align: left;
  cursor: pointer;
}
.filter-button:hover,
.filter-button.is-active {
  border-color: var(--ink-1);
  background: var(--ink-1);
  color: var(--bg);
}

.resource-list {
  display: grid;
  border-top: 1px solid var(--rule);
}
.resource-item {
  display: grid;
  grid-template-columns: minmax(0, 170px) minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 25px 0;
  border-bottom: 1px solid var(--rule);
  color: inherit;
  text-decoration: none;
}
.resource-item:hover .resource-title {
  color: var(--accent);
}
.resource-type {
  display: inline-flex;
  width: fit-content;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  padding: 5px 10px;
  color: var(--ink-1);
  background: var(--card);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.resource-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.08;
  transition: color .15s ease;
}
.resource-summary {
  max-width: 68ch;
  margin: 0;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.65;
}
.resource-action {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  white-space: nowrap;
}
.empty-state {
  display: none;
  padding: 42px 0;
  border-bottom: 1px solid var(--rule);
  color: var(--ink-2);
  font-size: 15px;
}
.empty-state.is-visible { display: block; }

.article-shell {
  width: min(900px, calc(100% - 48px));
  margin: 0 auto;
}
.article-hero {
  border-bottom: 1px solid var(--rule);
}
.article-body {
  padding: 44px 0 34px;
}
.article-body h2 {
  margin: 38px 0 14px;
  font-size: 34px;
  line-height: 1.12;
}
.article-body h2:first-child { margin-top: 0; }
.article-body h3 {
  margin: 28px 0 10px;
  font-size: 24px;
  line-height: 1.22;
}
.article-body p,
.article-body li {
  color: #4f4a40;
  font-size: 16px;
  line-height: 1.82;
}
.article-body p { margin: 0 0 14px; }
.article-body ul {
  margin: 0 0 16px;
  padding-left: 20px;
}
.article-body li + li { margin-top: 8px; }
.article-body blockquote {
  margin: 24px 0;
  padding: 18px 20px;
  border-left: 3px solid var(--accent);
  background: var(--card);
  color: var(--ink-1);
}
.article-body blockquote p {
  margin: 0;
  color: var(--ink-1);
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.35;
}
.article-body code {
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1px 6px;
  background: var(--card);
  color: var(--ink-1);
  font-family: var(--font-mono);
  font-size: .9em;
}
.article-body pre {
  overflow-x: auto;
  margin: 22px 0;
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 18px;
  background: #1f1b15;
  color: #fbf6ec;
}
.article-body pre code {
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  background: var(--card);
  font-size: 14.5px;
  line-height: 1.55;
}
.article-body th,
.article-body td {
  border: 1px solid var(--rule);
  padding: 12px 13px;
  vertical-align: top;
  text-align: left;
}
.article-body th {
  color: var(--ink-1);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.article-note {
  margin: 24px 0;
  padding: 18px 20px;
  border: 1px solid var(--rule-strong);
  border-radius: 8px;
  background: var(--card);
}
.article-note strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink-1);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
}
.article-note p {
  margin: 0;
}
.article-figure {
  margin: 30px 0;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--card);
  overflow: hidden;
}
.figure-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rule);
}
.figure-cell {
  min-height: 130px;
  padding: 18px;
  background: var(--card);
}
.figure-cell strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink-1);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
}
.figure-cell span {
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.55;
}
.article-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  align-items: center;
  margin: 44px 0 62px;
  padding: 24px;
  border: 1px solid var(--rule-strong);
  border-radius: 8px;
  background: var(--card);
}
.article-cta h2 {
  margin: 0 0 8px;
  font-size: 30px;
}
.article-cta p {
  margin: 0;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.6;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.site-footer {
  border-top: 1px solid var(--rule);
  padding: 30px 0;
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12px;
}
.site-footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.footer-links {
  display: inline-flex;
  gap: 16px;
  flex-wrap: wrap;
}
.site-footer a {
  color: var(--ink-2);
  text-decoration: none;
}
.site-footer a:hover { color: var(--ink-1); }

@media (max-width: 920px) {
  .site-nav-inner {
    align-items: center;
    gap: 14px;
  }
  .nav-links { display: none; }
  .nav-actions { margin-left: auto; }
  .content-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .filter-panel {
    position: static;
  }
  .filter-row {
    display: flex;
    flex-wrap: wrap;
  }
  .filter-button {
    width: auto;
  }
  .resource-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .article-cta {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-shell,
  .article-shell {
    width: min(100% - 32px, 1180px);
  }
  .resource-hero,
  .article-hero {
    padding: 58px 0 38px;
  }
  h1 {
    font-size: clamp(44px, 15vw, 64px);
  }
  .resource-title {
    font-size: 28px;
  }
  .nav-actions {
    gap: 8px;
  }
  .nav-cta {
    padding: 10px 13px;
  }
  .lang-switch button {
    padding: 4px 9px;
  }
  .figure-grid {
    grid-template-columns: 1fr;
  }
  .article-body table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
  .article-body th,
  .article-body td {
    min-width: 150px;
  }
}