:root {
  --ink: #1c1916;
  --muted: #5f584e;
  --faint: #8a8174;
  --line: #e2d9cc;
  --paper: #f4f0e8;
  --card: #fffcf8;
  --accent: #7a3028;
  --max: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16.5px;
  line-height: 1.75;
}

a { color: inherit; }

h1, h2, h3 {
  font-family: "Songti SC", "Noto Serif SC", "STSong", "SimSun", serif;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.top {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.top-inner,
.wrap {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 68px;
}

.brand {
  text-decoration: none;
  font-family: "Songti SC", "Noto Serif SC", "STSong", "SimSun", serif;
  font-size: 17px;
  letter-spacing: 0.06em;
}

nav.primary {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}

nav.primary a {
  text-decoration: none;
  font-size: 14.5px;
  color: var(--muted);
}

nav.primary a[aria-current="page"],
nav.primary a:hover { color: var(--ink); }

.hero { padding: 64px 0 12px; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(240px, 0.75fr);
  gap: 56px;
  align-items: end;
}

h1 {
  margin: 0;
  font-size: clamp(40px, 5.6vw, 64px);
  line-height: 1.18;
}

.kicker {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.16em;
}

.page-title {
  margin: 0;
  font-size: clamp(32px, 4vw, 44px);
  line-height: 1.25;
}

.lead {
  margin: 18px 0 0;
  max-width: 40em;
  color: var(--muted);
  font-size: 17px;
}

.aside-card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 18px 18px 14px;
}

.aside-card p { margin: 0 0 12px; }

.aside-card span {
  display: block;
  color: var(--faint);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.aside-card a { color: var(--accent); }

.toc { list-style: none; margin: 28px 0 0; padding: 0; }

.toc li { border-top: 1px solid var(--line); }

.toc a {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 8px;
  padding: 16px 4px;
  text-decoration: none;
}

.toc em {
  font-style: normal;
  font-family: "Songti SC", "Noto Serif SC", "STSong", serif;
  color: var(--accent);
  font-size: 18px;
}

.toc strong { display: block; font-size: 17px; font-weight: 600; }

.toc small {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.block { padding: 18px 0 8px; }

h2 { margin: 0 0 14px; font-size: 26px; }

h3 { margin: 22px 0 8px; font-size: 20px; }

.prose p { margin: 0 0 12px; }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 28px;
}

.step {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 16px 16px 12px;
}

.step b {
  display: block;
  margin-bottom: 6px;
  font-family: "Songti SC", "Noto Serif SC", "STSong", serif;
  font-size: 18px;
  font-weight: 600;
}

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

.layout {
  display: grid;
  grid-template-columns: 212px minmax(0, 1fr);
  gap: 42px;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.side {
  position: sticky;
  top: 18px;
  align-self: start;
  padding-top: 8px;
}

.side p {
  margin: 0 0 8px;
  color: var(--faint);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.side a {
  display: block;
  padding: 5px 0;
  text-decoration: none;
  color: var(--muted);
  font-size: 14.5px;
}

.side a[aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
}

.side .sub { margin: 2px 0 8px 12px; }

.side .sub a { font-size: 13.5px; padding: 3px 0; }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--line);
}

th, td {
  text-align: left;
  vertical-align: top;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
}

th {
  width: 11.5em;
  color: var(--muted);
  font-weight: 500;
  background: #faf6f0;
}

tr:last-child th,
tr:last-child td { border-bottom: 0; }

.scope {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  padding: 18px 18px 16px;
}

.scope p { margin: 0; }

ol.plain, ul.plain { margin: 8px 0 0; padding-left: 1.2em; }

ol.plain li, ul.plain li { margin: 6px 0; }

.links { list-style: none; margin: 0; padding: 0; }

.links li { border-top: 1px solid var(--line); }

.links a {
  display: block;
  padding: 14px 2px;
  text-decoration: none;
}

.links strong { display: block; }

.links span { color: var(--muted); font-size: 14.5px; }

address {
  font-style: normal;
  background: var(--card);
  border: 1px solid var(--line);
  padding: 18px 18px 8px;
}

address p { margin: 0 0 10px; }

.site-footer {
  padding: 36px 16px 40px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
  border-top: 1px solid var(--line);
}

body.home .site-footer {
  background: #14110f;
  color: rgba(247, 242, 234, 0.62);
  border-top: 0;
  padding: 48px 16px 52px;
}

body.home .site-footer a { color: #f0c7bf; }

.site-footer p { margin: 0; }

.site-footer a { color: var(--muted); }

body.home .top {
  position: sticky;
  top: 0;
  z-index: 3;
  background: #14110f;
  border-bottom: 0;
  color: #f7f2ea;
}

body.home .brand,
body.home nav.primary a { color: rgba(247, 242, 234, 0.72); }

body.home nav.primary a[aria-current="page"],
body.home nav.primary a:hover { color: #fff; }

.home-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(900px 420px at 100% 0%, rgba(186, 96, 78, 0.45), transparent 58%),
    linear-gradient(155deg, #2c241f 0%, #161310 62%, #3c2622 100%);
  color: #f7f2ea;
  padding: 72px 0 120px;
}

.home-hero::before {
  content: "界";
  position: absolute;
  right: -0.08em;
  top: -0.28em;
  font-family: "Songti SC", "Noto Serif SC", "STSong", serif;
  font-size: 28rem;
  line-height: 1;
  color: rgba(247, 242, 234, 0.045);
  pointer-events: none;
}

.home-hero .wrap { position: relative; }

.home-hero h1 {
  max-width: 10em;
  color: #fbf7f1;
  font-size: clamp(46px, 6.4vw, 78px);
  letter-spacing: 0.04em;
}

.home-kicker {
  margin: 0 0 18px;
  color: #e4b2a6;
  font-size: 13px;
  letter-spacing: 0.22em;
}

.home-hero .lead {
  max-width: 40em;
  color: rgba(247, 242, 234, 0.78);
  font-size: 18px;
}

.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin: 42px 0 0;
}

.facts div { border-top: 1px solid rgba(247, 242, 234, 0.28); padding-top: 12px; }

.facts span {
  display: block;
  color: rgba(247, 242, 234, 0.55);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.facts strong {
  display: block;
  margin-top: 6px;
  font-weight: 500;
  font-size: 15px;
  line-height: 1.5;
}

.sheet {
  margin-top: -48px;
  padding-bottom: 28px;
}

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

.tile {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 220px;
  padding: 22px 22px 18px;
  text-decoration: none;
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 18px 50px rgba(20, 12, 8, 0.12);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.tile:hover { transform: translateY(-4px); box-shadow: 0 24px 60px rgba(20, 12, 8, 0.16); }

.tile-main { grid-column: span 2; }

.tile-wide { grid-column: span 2; }

.tile em {
  position: absolute;
  right: 10px;
  top: -18px;
  font-style: normal;
  font-family: "Songti SC", "Noto Serif SC", "STSong", serif;
  font-size: 92px;
  line-height: 1;
  letter-spacing: 0;
  color: rgba(122, 48, 40, 0.12);
  pointer-events: none;
}

.tile h2 {
  margin: 10px 0 8px;
  font-size: 26px;
}

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

.tile ul {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tile li {
  position: relative;
  z-index: 1;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  font-size: 13px;
}

.tile h2,
.tile p { position: relative; z-index: 1; }

.tile-main {
  background: #fff;
  color: var(--ink);
  border-top: 4px solid var(--accent);
}

.tile-main h2,
.tile-main p,
.tile-main li { color: var(--ink); }

.tile-main em { color: rgba(122, 48, 40, 0.14); }

.band { padding: 8px 0; }

.band h2 { font-size: 32px; }

.band.prose {
  width: min(var(--max), calc(100% - 40px));
  margin: 18px auto;
  padding: 32px 36px 22px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 12px 36px rgba(40, 28, 20, 0.05);
}

.band.prose h2 {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.band.prose h2::before {
  content: "";
  width: 18px;
  height: 18px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  box-shadow: inset 0 0 0 5px #fff, inset 0 0 0 6px var(--accent);
}

.rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.rail li {
  padding: 8px 18px 0 0;
  border-top: 2px solid var(--accent);
}

.rail b {
  display: block;
  margin: 12px 0 6px;
  font-family: "Songti SC", "Noto Serif SC", "STSong", serif;
  font-size: 20px;
}

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

.duo {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
}

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

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 22px 22px 8px;
}

.panel h2 { font-size: 28px; }

.panel ol { margin: 0 0 16px; padding-left: 1.2em; }

.panel li { margin: 8px 0; }

.home-scope {
  margin-top: 8px;
  padding: 28px 0 10px;
}

.home-scope .scope {
  font-size: 15.5px;
  line-height: 1.9;
  background:
    linear-gradient(#fffdf8, #fffdf8) padding-box,
    linear-gradient(135deg, #7a3028, #e2d9cc) border-box;
  border: 1px solid transparent;
  box-shadow: 0 16px 40px rgba(40, 28, 20, 0.06);
}

.visit {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 24px;
  align-items: end;
  margin: 18px 0 36px;
  padding: 28px 26px;
  background: #241c18;
  color: #f7f2ea;
}

.visit h2 { margin: 0 0 8px; color: #fbf7f1; font-size: 30px; }

.visit p { margin: 0; color: rgba(247, 242, 234, 0.78); }

.visit p a { color: #f0c7bf; }

.visit a.more {
  justify-self: end;
  padding: 12px 18px;
  border: 1px solid rgba(247, 242, 234, 0.4);
  text-decoration: none;
  letter-spacing: 0.08em;
}

.visit a.more:hover { background: rgba(247, 242, 234, 0.08); }

@media (max-width: 860px) {
  .hero-grid, .split, .layout, .facts, .bento, .rail, .duo, .trio, .visit { grid-template-columns: 1fr; }
  .tile-main, .tile-wide { grid-column: auto; }
  .side { position: static; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
  .top-inner { align-items: flex-start; flex-direction: column; padding: 14px 0; }
  .visit a.more { justify-self: start; }
  .home-hero::before { font-size: 16rem; }
  th { width: 7.2em; }
}