:root {
  color-scheme: light;
  --bg: #f7f7f4;
  --surface: #ffffff;
  --surface-2: #efefe8;
  --ink: #171714;
  --muted: #66665f;
  --line: #d9d8cd;
  --accent: #225c4a;
  --accent-2: #b9462f;
  --shadow: 0 24px 60px rgba(20, 20, 16, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 48px);
  background: rgba(247, 247, 244, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 15px;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.nav a {
  border: 1px solid var(--line);
  padding: 8px 12px;
  background: var(--surface);
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
}

.nav a.active,
.nav a:hover {
  border-color: var(--ink);
  color: var(--ink);
}

main {
  width: min(1160px, calc(100% - 36px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 32px;
  align-items: stretch;
  padding: 64px 0 48px;
}

.hero-copy {
  padding: clamp(28px, 5vw, 56px);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero h1,
.page-title h1,
.article-title h1 {
  margin: 0;
  max-width: 820px;
  font-size: clamp(36px, 7vw, 76px);
  line-height: 1.04;
}

.hero p,
.page-title p,
.article-summary {
  color: var(--muted);
  font-size: 17px;
}

.hero-actions,
.config-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid var(--ink);
  background: var(--surface);
  text-decoration: none;
  font-weight: 700;
}

.button.primary {
  background: var(--ink);
  color: #fff;
}

.hero-panel {
  display: grid;
  gap: 12px;
}

.hero-panel > div {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 130px;
  padding: 24px;
  background: var(--accent);
  color: #fff;
}

.hero-panel > div:nth-child(2) {
  background: var(--accent-2);
}

.hero-panel > div:nth-child(3) {
  background: var(--ink);
}

.metric {
  font-size: 52px;
  font-weight: 850;
  line-height: 1;
}

.metric-label {
  font-size: 14px;
}

.section,
.page-title,
.article-title {
  padding: 42px 0;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.section-heading h2,
.config-main h2,
.config-side h2,
.two-column h2 {
  margin: 0 0 12px;
  font-size: 24px;
}

.section-heading p {
  max-width: 520px;
  margin: 0 0 14px;
  color: var(--muted);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.article-card,
.config-main,
.config-side,
.dimension-block {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 24px;
}

.article-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  gap: 14px;
}

.card-meta,
.article-title > p,
.back-link {
  color: var(--muted);
  font-size: 13px;
}

.article-card h2 {
  margin: 0;
  font-size: 24px;
  line-height: 1.25;
}

.article-card h2 a {
  text-decoration: none;
}

.article-card p {
  margin: 0;
  color: var(--muted);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tags span,
.dimension-strip span,
.dimension-nav a {
  border: 1px solid var(--line);
  background: var(--surface-2);
  padding: 5px 9px;
  color: var(--muted);
  font-size: 12px;
}

.dimension-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.text-link,
.back-link {
  font-weight: 700;
  color: var(--accent);
}

.page-title {
  border-bottom: 1px solid var(--line);
}

.config-links a {
  overflow-wrap: anywhere;
  color: var(--accent);
  font-weight: 700;
}

.backup-notice {
  max-width: 900px;
  margin-top: 22px;
  padding: 18px 22px;
  background: var(--surface);
  border-left: 4px solid var(--accent-2);
  color: var(--muted);
}

.config-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 18px;
  padding: 34px 0 52px;
}

.link-list {
  display: grid;
  gap: 12px;
}

.link-row {
  display: grid;
  gap: 4px;
  padding: 16px;
  border: 1px solid var(--line);
  background: var(--bg);
  text-decoration: none;
}

.link-row span,
.config-side dd,
.config-side dt {
  overflow-wrap: anywhere;
}

.link-row span,
.config-side dt {
  color: var(--muted);
  font-size: 13px;
}

.config-side dl {
  display: grid;
  gap: 8px;
  margin: 0;
}

.config-side dd {
  margin: 0 0 12px;
  font-weight: 700;
}

.backup-stack {
  display: grid;
  gap: 28px;
}

.config-article {
  scroll-margin-top: 96px;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: clamp(22px, 4vw, 36px);
  box-shadow: var(--shadow);
}

.config-article-header {
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.config-article-header > p {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 13px;
}

.config-article-header h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.15;
}

.config-article-header h3,
.config-section h3,
.config-article-grid h3 {
  margin: 22px 0 12px;
  color: var(--accent);
  font-size: 16px;
}

.config-section {
  padding-top: 22px;
}

.topic-map {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.topic-map section {
  padding: 16px;
  background: var(--bg);
  border: 1px solid var(--line);
}

.topic-map h4 {
  margin: 0 0 8px;
  font-size: 17px;
}

.topic-map p {
  margin: 0 0 12px;
  color: var(--muted);
}

.config-article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 24px;
  padding-top: 22px;
}

.article-page {
  max-width: 1040px;
  margin: 0 auto;
}

.article-title {
  border-bottom: 1px solid var(--line);
}

.article-summary {
  max-width: 860px;
  margin: 22px 0;
  padding: 20px 24px;
  background: var(--surface);
  border-left: 4px solid var(--accent);
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 24px;
}

.timeline,
.action-list,
.dimension-block ul {
  margin: 0;
  padding-left: 22px;
}

.timeline li,
.action-list li,
.dimension-block li {
  margin-bottom: 12px;
}

.timeline span {
  display: inline-block;
  min-width: 56px;
  color: var(--accent);
  font-weight: 800;
}

.timeline p {
  margin: 4px 0 0;
  color: var(--muted);
}

.action-list p {
  margin: 4px 0 0;
  color: var(--muted);
}

.dimension-nav {
  position: sticky;
  top: 80px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 0;
  background: rgba(247, 247, 244, 0.92);
  backdrop-filter: blur(14px);
}

.dimension-nav a {
  text-decoration: none;
}

.dimension-block {
  margin: 18px 0;
}

.dimension-block h2 {
  margin: 0 0 18px;
  font-size: 22px;
  line-height: 1.4;
}

.dimension-block h3 {
  margin: 18px 0 8px;
  color: var(--accent);
  font-size: 15px;
}

.reuse {
  margin: 20px 0 0;
  padding: 16px;
  background: var(--surface-2);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px clamp(18px, 4vw, 48px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 900px) {
  .site-header,
  .section-heading,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .config-layout,
  .config-article-grid,
  .topic-map,
  .two-column {
    grid-template-columns: 1fr;
  }

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

  .hero h1,
  .page-title h1,
  .article-title h1 {
    font-size: 38px;
  }
}