:root {
  color-scheme: light;
  --ink: #27342d;
  --muted: #617068;
  --paper: #fffdf8;
  --field: #eef3ea;
  --line: #d6dfd2;
  --leaf: #315d47;
  --leaf-dark: #234535;
  --leaf-soft: #e1eddf;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  padding: clamp(18px, 4vw, 48px) 20px 48px;
  background: var(--field);
  color: var(--ink);
  font-family: ui-rounded, "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.78;
}

.container {
  width: min(100%, 920px);
  margin: 0 auto;
  padding: clamp(24px, 5vw, 56px);
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  box-shadow: 0 20px 60px rgba(35, 69, 53, 0.08);
}

h1, h2, h3 { color: var(--leaf-dark); line-height: 1.24; }

h1 {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(2.15rem, 5vw, 3.5rem);
  font-weight: 760;
  letter-spacing: 0;
}

h1::before {
  content: "Petchat /";
  display: block;
  margin-bottom: 12px;
  color: var(--leaf);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.last-updated {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.94rem;
  font-style: normal;
}

.legal-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 34px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.legal-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 5px 12px;
  border: 1px solid transparent;
  border-radius: 4px;
  color: var(--leaf-dark);
  font-size: 0.92rem;
  font-weight: 650;
  text-decoration: none;
}

.legal-nav a[aria-current="page"] { background: var(--leaf-soft); }
.legal-nav a:hover, .legal-nav a:focus-visible { border-color: var(--leaf); background: #f5f9f1; outline: none; }

.highlight {
  margin: 0 0 34px;
  padding: 20px 22px;
  border: 1px solid #bfd3bb;
  border-left: 5px solid var(--leaf);
  border-radius: 4px;
  background: #f3f8f0;
}

.highlight p { margin: 0; }

h2 {
  margin: 44px 0 14px;
  padding-top: 5px;
  font-size: 1.34rem;
  font-weight: 750;
}

h3 { margin: 28px 0 10px; font-size: 1.08rem; }
p, li { margin: 0 0 14px; }
ul { margin: 0 0 18px; padding-left: 1.3rem; }
li::marker { color: var(--leaf); }

a { color: var(--leaf-dark); text-decoration-thickness: 1px; text-underline-offset: 3px; }
strong { color: var(--leaf-dark); }

.contact {
  margin-top: 44px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #f6f8f3;
}

.contact h2 { margin-top: 0; }

@media (max-width: 600px) {
  body { padding: 12px; }
  .container { padding: 24px 20px 32px; }
  .legal-nav { gap: 4px; }
  .legal-nav a { padding-inline: 8px; }
  h2 { margin-top: 36px; }
}