:root {
  --ng-ink: #191919;
  --ng-muted: #696763;
  --ng-line: #e1dfda;
  --ng-paper: #ffffff;
  --ng-soft: #f5f4f1;
  --ng-green: #f2f3ef;
  --ng-blue: #f5f4f1;
  --ng-peach: #f5f4f1;
  --ng-wide: 1120px;
  --ng-radius: 12px;
  --ng-sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --ng-serif: "P22 Mackinac W01 Book", "Iowan Old Style", "Songti SC", STSong, Georgia, serif;
}

html { background: var(--ng-paper); }
body {
  background: var(--ng-paper);
  color: var(--ng-ink);
  font-family: var(--ng-sans);
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { text-underline-offset: .24em; }

.site-header,
main,
.site-footer {
  width: min(var(--ng-wide), calc(100% - 48px));
  max-width: var(--ng-wide);
  margin-inline: auto;
}

.site-header {
  min-height: 76px;
  padding: 18px 0;
  border: 0;
  background: rgba(255,255,255,.92);
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(12px);
}
.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: rgba(25,25,25,.08);
}
.site-name {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--ng-serif);
  font-size: 18px;
  font-weight: 500;
}
.site-name::before {
  content: "✦";
  display: grid;
  width: 29px;
  height: 29px;
  place-items: center;
  border: 1px solid var(--ng-ink);
  border-radius: 7px;
  background: var(--ng-ink);
  color: #fff;
  font-family: var(--ng-sans);
  font-size: 13px;
}
.main-nav { gap: 8px; }
.main-nav a {
  padding: 7px 11px;
  border-radius: 7px;
  color: rgba(25,25,25,.68);
  font-size: 13px;
  transition: background .2s, color .2s;
}
.main-nav a:hover { background: var(--ng-soft); color: var(--ng-ink); text-decoration: none; }

.home-hero {
  min-height: calc(100vh - 76px);
  padding: clamp(68px, 10vh, 112px) 0 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 64px;
}
.home-hero__copy {
  width: min(880px, 100%);
  max-width: none;
  margin: 0 auto;
  text-align: center;
}
.overline,
.section-label {
  color: rgba(25,25,25,.48);
  font-family: var(--ng-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .16em;
}
.home-hero .overline {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 12px;
  border: 1px solid var(--ng-line);
  border-radius: 99px;
  background: var(--ng-soft);
}
.home-hero h1 {
  max-width: 900px;
  margin: 23px auto 20px;
  font-family: var(--ng-serif);
  font-size: clamp(46px, 7vw, 78px);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -.045em;
}
.hero-lead {
  max-width: 640px;
  margin: 0 auto;
  color: rgba(25,25,25,.62);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
}
.hero-sketch {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  width: min(960px, 100%);
  margin: 0 auto;
  padding: 1px;
  border: 1px solid var(--ng-line);
  border-bottom: 0;
  border-radius: 18px 18px 0 0;
  background: var(--ng-line);
  overflow: hidden;
  box-shadow: 0 18px 60px rgba(25,25,25,.07);
}
.sketch-card,
.sketch-card--yellow,
.sketch-card--blue,
.sketch-card--pink {
  min-height: 145px;
  padding: 24px;
  border: 0;
  border-radius: 0;
  color: var(--ng-ink);
  text-decoration: none;
  transform: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  transition: background .2s;
}
.sketch-card--yellow { background: var(--ng-soft); box-shadow: inset 0 3px #526456; }
.sketch-card--blue { background: var(--ng-soft); box-shadow: inset 0 3px #455b6d; }
.sketch-card--pink { background: var(--ng-soft); box-shadow: inset 0 3px #80594b; }
.sketch-card:hover { background: #eeece8; transform: none; }
.sketch-card span { color: rgba(25,25,25,.42); font-size: 11px; }
.sketch-card strong { margin-top: 18px; font-family: var(--ng-serif); font-size: 22px; font-weight: 400; }
.sketch-card small { margin-top: 5px; color: var(--ng-muted); font-size: 12px; }
.sketch-card::after { content: "→"; margin-top: auto; align-self: flex-end; font-size: 15px; }

.garden-intro {
  margin: 112px 0 0;
  padding: 42px;
  border: 1px solid var(--ng-line);
  border-radius: var(--ng-radius);
  background: #f6f5f2;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 28px;
}
.garden-intro h2,
.home-section h2,
.page-hero h1,
.article-header h1,
.knowledge-map-callout h2,
.related-section h2 {
  font-family: var(--ng-serif);
  font-weight: 400;
  letter-spacing: -.025em;
}
.garden-intro h2 { margin: 8px 0 9px; font-size: 35px; }
.garden-intro p { max-width: 680px; color: var(--ng-muted); font-size: 14px; }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid var(--ng-line);
  border-radius: 8px;
  background: var(--ng-paper);
  color: var(--ng-ink);
  font-size: 12px;
  text-decoration: none;
  transition: background .2s, transform .2s;
}
.text-link:hover { background: #f3f3f1; transform: translateY(-1px); }

.home-section {
  margin: 0;
  padding: 112px 0;
  border: 0;
  border-bottom: 1px solid var(--ng-line);
  background: transparent;
  display: grid;
  grid-template-columns: minmax(220px, .72fr) minmax(0, 1.55fr);
  gap: 72px;
  align-items: start;
}
.home-section__heading {
  margin: 0;
  display: block;
  position: sticky;
  top: 112px;
}
.home-section__heading h2 { margin: 8px 0 13px; font-size: 35px; line-height: 1.25; }
.home-section__heading > p { margin: 0; color: var(--ng-muted); font-size: 13px; }
.home-section__heading .text-link { margin-top: 22px; }

.book-shelf--home,
.book-shelf--library {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 25px;
  max-width: none;
}
.book-cover {
  aspect-ratio: .70;
  padding: 20px 18px;
  border: 1px solid rgba(25,25,25,.16);
  border-radius: 5px 9px 9px 5px;
  color: #fbfaf7;
  box-shadow: -4px 5px 0 rgba(25,25,25,.13), inset 4px 0 rgba(255,255,255,.10);
}
.book-cover--blue { background: #455b6d; }
.book-cover--rust { background: #80594b; }
.book-cover--moss { background: #526456; }
.book-cover h3 { font-family: var(--ng-serif); font-size: 17px; font-weight: 400; }
.book-cover__number,
.book-cover__author { color: rgba(255,255,255,.72); }
.book-cover__rule { background: rgba(255,255,255,.38); }
.book-entry__meta h3 { font-size: 13px; font-weight: 500; }
.book-entry__status span { color: var(--ng-muted); }
.map-promise {
  grid-column: 2;
  margin: 6px 0 0;
  padding: 14px 16px;
  border: 1px dashed #d8d6cf;
  border-radius: 9px;
  background: #fbfaf8;
  color: var(--ng-muted);
  font-size: 12px;
}

.home-card-grid {
  display: block;
  border-top: 1px solid var(--ng-line);
}
.note-card,
.note-card--feature,
.note-card--default,
.note-card--compact {
  min-height: 0;
  padding: 22px 10px;
  border: 0;
  border-bottom: 1px solid var(--ng-line);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  transition: background .2s, padding .2s;
}
.note-card:hover {
  padding-left: 18px;
  padding-right: 18px;
  border-radius: 9px;
  background: var(--ng-soft);
  box-shadow: none;
  transform: none;
}
.note-card__meta { margin-bottom: 8px; color: var(--ng-muted); font-size: 11px; }
.note-card__link h3 {
  margin: 0 0 6px;
  font-family: var(--ng-serif);
  font-size: 21px;
  font-weight: 400;
  letter-spacing: -.015em;
}
.note-card__link p { max-width: 640px; color: var(--ng-muted); font-size: 13px; }
.note-card__footer { margin-top: 11px; }
.note-card__tags { font-size: 11px; }
.card-arrow { display: inline; color: rgba(25,25,25,.42); }

.home-note {
  margin: 80px 0 0;
  padding: 28px 30px;
  border: 1px solid var(--ng-line);
  border-radius: var(--ng-radius);
  border-left: 4px solid #526456;
  background: var(--ng-soft);
}
.home-note > p:last-child { max-width: 780px; color: var(--ng-muted); }

.inner-page,
.article-page { width: min(var(--ng-wide), calc(100% - 48px)); max-width: var(--ng-wide); padding: 0; }
.page-hero {
  margin: 0;
  padding: 82px 0 48px;
  border: 0;
  border-bottom: 1px solid var(--ng-line);
  display: block;
}
.page-count { display: inline-grid; width: 34px; height: 34px; place-items: center; border-radius: 7px; background: var(--ng-soft); color: var(--ng-muted); font-size: 11px; }
.page-hero h1 { margin: 16px 0 10px; font-size: clamp(43px, 6vw, 66px); line-height: 1.1; }
.page-hero p { max-width: 660px; color: var(--ng-muted); font-size: 15px; }
.garden-browser,
.library-browser { padding: 36px 0 72px; }
.category-grid { padding: 30px 0 72px; }
.garden-grid,
.category-grid { display: block; }

.filter-grid {
  padding: 16px;
  border: 1px solid var(--ng-line);
  border-radius: 10px;
  background: var(--ng-soft);
}
.filter-grid input,
.filter-grid select { border-color: var(--ng-line); border-radius: 7px; background: var(--ng-paper); }
.library-note,
.knowledge-map-callout {
  padding: 24px;
  border: 1px solid var(--ng-line);
  border-radius: 10px;
  background: var(--ng-soft);
}
.library-toolbar { margin: 28px 0 24px; }
.library-tabs button { border-radius: 7px; }
.library-tabs button.is-active { border: 0; background: var(--ng-ink); color: #fff; }

.article-page { max-width: 840px; }
.article-breadcrumb { padding: 34px 0 0; }
.article-header { padding: 50px 0 38px; }
.article-header h1 { max-width: 790px; font-size: clamp(40px, 6vw, 64px); line-height: 1.13; }
.article-header__main > p { font-size: 15px; }
.article-meta { padding: 14px 16px; border-radius: 8px; background: var(--ng-soft); }
.article-content { padding: 42px 0 72px; }
.markdown-body { max-width: 720px; margin: 0 auto; font-size: 16px; line-height: 1.9; }
.markdown-body h2 { font-family: var(--ng-serif); font-size: 29px; font-weight: 400; }
.related-section { padding: 50px 0; }

.site-footer {
  margin-top: 112px;
  padding: 36px 0 42px;
  border-top: 1px solid var(--ng-line);
  background: transparent;
  color: var(--ng-muted);
}
.footer-name { color: var(--ng-ink); font-family: var(--ng-serif); font-size: 14px; }
.copyright a { color: var(--ng-muted); }

@media (max-width: 820px) {
  .site-header, main, .site-footer, .inner-page, .article-page { width: min(var(--ng-wide), calc(100% - 32px)); }
  .home-hero { min-height: auto; padding-top: 64px; }
  .home-hero h1 { font-size: clamp(42px, 10vw, 62px); }
  .hero-sketch { grid-template-columns: 1fr; border-bottom: 1px solid var(--ng-line); border-radius: 15px; }
  .sketch-card { min-height: 112px; }
  .garden-intro { margin-top: 80px; padding: 30px; }
  .home-section { padding: 78px 0; grid-template-columns: 1fr; gap: 34px; }
  .home-section__heading { position: static; }
  .map-promise { grid-column: 1; }
}

@media (max-width: 560px) {
  .site-header { display: block; padding: 14px 0; }
  .main-nav { margin-top: 10px; }
  .main-nav a { padding: 5px 8px; }
  .home-hero { gap: 44px; }
  .home-hero h1 { font-size: 42px; }
  .hero-lead { font-size: 14px; }
  .garden-intro { display: block; padding: 24px; }
  .garden-intro .text-link { margin-top: 18px; }
  .book-shelf--home,
  .book-shelf--library { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 14px; }
  .filter-grid { grid-template-columns: 1fr; }
}