:root {
  color-scheme: light;
  --paper: #f6f2e9;
  --surface: #fffcf5;
  --ink: #302d27;
  --muted: #71695e;
  --accent: #914537;
  --line: #d8cfc0;
  --dark: #292b26;
  --serif: 'Songti SC', 'STSong', 'Noto Serif CJK SC', 'SimSun', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 2rem; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 1rem/1.8 var(--sans); }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 6px; }
a:hover { color: var(--accent); }
p, h1, h2, h3, figure { margin: 0; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; }
.wrap { width: min(100% - 6rem, 76rem); margin-inline: auto; }
.skip-link { position: absolute; top: -8rem; left: 1rem; padding: .75rem 1.5rem; background: var(--surface); z-index: 10; }
.skip-link:focus { top: 1rem; }
.site-header { display: flex; justify-content: space-between; align-items: center; gap: 2rem; padding-block: 1.5rem; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: .75rem; font: 600 1.5rem var(--serif); white-space: nowrap; }
.brand small { margin-left: .5rem; font: .75rem var(--sans); letter-spacing: .14em; }
.seal { display: grid; place-items: center; width: 2.75rem; height: 2.75rem; background: var(--accent); color: var(--surface); font: 1.9rem var(--serif); border-radius: 3px; }
nav { display: flex; gap: 2rem; font-size: .875rem; }
nav a { display: inline-flex; align-items: center; min-height: 2.75rem; }
.hero { display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: 5rem; padding-block: 5rem 6rem; }
.eyebrow { font-size: .875rem; letter-spacing: .12em; color: var(--muted); margin-bottom: 1.5rem; }
.short-rule { display: inline-block; vertical-align: middle; width: 1.75rem; height: 1px; margin-right: .75rem; background: var(--accent); }
h1 { font-size: clamp(2.75rem, 4.5vw, 4.5rem); line-height: 1.4; letter-spacing: .02em; }
.accent { color: var(--accent); }
.hero-description { font-size: 1.125rem; color: var(--muted); margin-top: 1.75rem; line-height: 2; }
.actions { display: flex; align-items: center; gap: 2rem; margin-top: 2.5rem; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 2.5rem; padding: .875rem 1.5rem; background: var(--accent); color: var(--surface); border: 1px solid var(--accent); border-radius: 3px; }
.button:hover { color: var(--accent); background: transparent; }
.text-link { display: inline-flex; align-items: center; gap: 1rem; min-height: 2.75rem; }
.hero-note { color: var(--muted); font-size: .875rem; margin-top: 1.25rem; }
.family-book { background: var(--surface); border: 1px solid var(--line); border-left: 5px double var(--line); padding: 1.75rem 2rem 1.25rem; box-shadow: 8px 8px 0 var(--paper), 9px 9px 0 var(--line); }
.book-heading { display: flex; justify-content: space-between; align-items: center; gap: .75rem; padding-bottom: 1rem; border-bottom: 3px double var(--line); font-family: var(--serif); font-size: 1.25rem; }
.book-index { font: .75rem var(--sans); letter-spacing: .08em; color: var(--muted); }
.tree { display: flex; gap: 1.25rem; padding: 2rem 0; }
.generation { display: flex; flex-direction: column; justify-content: space-between; padding-block: .5rem; font: .875rem/1.5 var(--serif); color: var(--muted); }
.tree-content { flex: 1; min-width: 0; }
.tree-level { display: flex; justify-content: space-around; }
.person { min-width: 3rem; display: flex; align-items: center; flex-direction: column; padding: .5rem .25rem; border: 1px solid var(--line); background: var(--paper); }
.person span { font: 1.6rem/1.4 var(--serif); }
.person small { font-size: .75rem; color: var(--muted); }
.root-level .person { background: var(--accent); border-color: var(--accent); color: var(--surface); }
.root-level .person small { color: var(--surface); }
.branch-line { height: 2.5rem; width: 50%; margin: 1.25rem auto 0; border: 1px solid var(--line); border-bottom: 0; position: relative; }
.branch-line::before { content: ''; position: absolute; height: 1.25rem; border-left: 1px solid var(--line); bottom: 100%; left: 50%; }
.branch-pair { display: flex; }
.branch-pair > div { width: 25%; }
.leaves .person { min-width: 2.5rem; }
.book-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 1rem; border-top: 1px solid var(--line); font-family: var(--serif); }
.small-seal { color: var(--accent); border: 1px solid var(--accent); padding: .25rem .5rem; font: 1rem/1.2 var(--serif); }
figcaption { color: var(--muted); font-size: .75rem; margin-top: 1rem; }
.section { padding-block: 4.5rem; border-top: 1px solid var(--line); }
h2 { font-size: clamp(1.8rem, 2.6vw, 2.5rem); line-height: 1.6; }
.about { display: grid; grid-template-columns: 1fr 1.5fr; gap: 5rem; }
.about-copy { padding-top: .5rem; }
.about-copy > p + p { color: var(--muted); margin-top: 1rem; }
.principles { display: flex; flex-wrap: wrap; gap: 1.5rem; margin-top: 2rem; color: var(--accent); font-family: var(--serif); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 2rem; }
.section-note { font-size: .875rem; color: var(--muted); }
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 3rem; }
.feature-list article { padding: 0 1.5rem; border-left: 1px solid var(--line); }
.feature-list article:first-child { padding-left: 0; border: 0; }
.feature-list article:last-child { padding-right: 0; }
.feature-number { font: 2rem var(--serif); color: var(--accent); }
h3 { font-size: 1.25rem; margin: 1.25rem 0 .75rem; }
.feature-list p { color: var(--muted); }
.feature-label { display: block; font-size: .875rem; color: var(--accent); margin-top: 1.5rem; }
.release { background: var(--dark); color: var(--paper); margin-top: 1rem; }
.release-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 7rem; padding-block: 4.5rem; }
.release .eyebrow { color: #c6b9a5; }
.release-description { max-width: 30rem; margin-top: 1.5rem; color: #d2cbc0; }
.release-details { padding-left: 3rem; border-left: 1px solid #5f6055; align-self: center; }
.status { display: inline-block; color: #ead6ba; border: 1px solid #777365; padding: .25rem .75rem; font-size: .875rem; }
.release h3 { font-size: 2rem; }
.release-details > p { color: #d2cbc0; }
dl { margin: 2rem 0 0; }
dl div { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem 1rem; padding-block: .75rem; border-top: 1px solid #5f6055; font-size: .875rem; }
dt { color: #c6b9a5; } dd { margin: 0; }
.site-footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1.5rem; padding-block: 2.5rem; }
.site-footer > p, .site-footer > span { color: var(--muted); font-size: .875rem; }
@media (min-width: 1600px) { .hero { padding-block: 6rem 7rem; } }
@media (max-width: 1050px) {
  .wrap { width: min(100% - 3rem, 76rem); }
  .hero { gap: 2.5rem; }
  .family-book { padding-inline: 1.25rem; }
  .about { gap: 2.5rem; }
  .section-heading { display: block; }
  .section-note { margin-top: 1rem; }
  .release-inner { gap: 3rem; }
  .release-details { padding-left: 2rem; }
}
@media (max-width: 720px) {
  .site-header { flex-wrap: wrap; gap: .5rem 1rem; padding-block: 1rem; }
  nav { gap: 1.5rem; flex-wrap: wrap; }
  .hero { grid-template-columns: 1fr; padding-block: 3rem 4rem; gap: 3rem; }
  h1 { font-size: clamp(2.5rem, 8vw, 3.5rem); }
  .hero-description { font-size: 1rem; }
  .family-book { width: min(100%, 28rem); justify-self: center; }
  .about, .release-inner { grid-template-columns: 1fr; gap: 2rem; }
  .section { padding-block: 3rem; }
  .feature-list { grid-template-columns: 1fr 1fr; gap: 2rem 0; margin-top: 2rem; }
  .feature-list article { padding-inline: 1rem; }
  .feature-list article:nth-child(odd) { padding-left: 0; border-left: 0; }
  .feature-list article:nth-child(even) { padding-right: 0; }
  .release-inner { padding-block: 3rem; }
  .release-details { padding: 2rem 0 0; border-left: 0; border-top: 1px solid #5f6055; }
  .site-footer { flex-direction: column; align-items: start; }
}
@media (max-width: 380px) {
  .wrap { width: calc(100% - 2rem); }
  .actions { gap: 1rem; }
  .feature-list { grid-template-columns: 1fr; }
  .feature-list article { padding: 0 0 1.5rem; border-left: 0; border-bottom: 1px solid var(--line); }
  .tree { gap: .75rem; }
  .book-index { letter-spacing: 0; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }