:root {
  color-scheme: light;
  --ink: #171717;
  --muted: #66615b;
  --line: #e9e3dc;
  --paper: #fffdf9;
  --soft: #f7f2eb;
  --accent: #865d42;
  --content: 900px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-underline-offset: 3px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
  padding: 10px max(24px, calc((100vw - var(--content)) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 249, .94);
  backdrop-filter: blur(14px);
}

.brand {
  color: var(--ink);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .08em;
  text-decoration: none;
  white-space: nowrap;
}

nav { display: flex; gap: 18px; overflow-x: auto; }
nav a { color: var(--muted); font-size: 14px; text-decoration: none; white-space: nowrap; }
nav a.active, nav a:hover { color: var(--accent); }

main { padding: 48px 24px 72px; }

.legal-document {
  width: min(100%, var(--content));
  margin: 0 auto;
}

h1, h2, h3, h4 { line-height: 1.42; scroll-margin-top: 88px; }
h1 { margin: 0 0 30px; font-size: clamp(30px, 5vw, 44px); letter-spacing: -.025em; }
h2 { margin: 52px 0 18px; padding-bottom: 10px; border-bottom: 1px solid var(--line); font-size: 25px; }
h3 { margin: 36px 0 14px; font-size: 20px; }
h4 { margin: 26px 0 10px; font-size: 17px; }
p, li { text-align: justify; }
strong { font-weight: 700; }

blockquote {
  margin: 24px 0;
  padding: 12px 20px;
  border-left: 3px solid var(--accent);
  background: var(--soft);
}

table {
  display: block;
  width: 100%;
  margin: 24px 0;
  border-collapse: collapse;
  overflow-x: auto;
  font-size: 14px;
}

th, td { min-width: 150px; padding: 12px 14px; border: 1px solid var(--line); vertical-align: top; }
th { background: var(--soft); text-align: left; }

code {
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: .9em;
}

.headerlink { margin-left: 8px; opacity: 0; text-decoration: none; }
h2:hover .headerlink, h3:hover .headerlink, h4:hover .headerlink { opacity: .5; }

footer {
  padding: 28px 24px 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

.index-main { width: min(100%, var(--content)); margin: 0 auto; }
.index-intro { padding: 36px 0 28px; }
.index-intro h1 { margin-bottom: 12px; }
.index-intro p { color: var(--muted); text-align: left; }
.eyebrow { color: var(--accent) !important; font-size: 12px; font-weight: 700; letter-spacing: .15em; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { display: flex; flex-direction: column; gap: 8px; min-height: 150px; padding: 24px; border: 1px solid var(--line); border-radius: 14px; color: var(--ink); background: #fff; text-decoration: none; transition: transform .18s ease, border-color .18s ease; }
.card:hover { transform: translateY(-2px); border-color: var(--accent); }
.card strong { font-size: 19px; }
.card span { color: var(--muted); font-size: 14px; }

@media (max-width: 720px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: 4px; padding: 12px 18px; }
  nav { width: 100%; padding-bottom: 2px; }
  main { padding: 32px 18px 56px; }
  .card-grid { grid-template-columns: 1fr; }
  h2 { margin-top: 42px; }
  p, li { text-align: left; }
}