:root {
  --ink: #2b2b29;
  --ink-soft: #5c5b56;
  --paper: #faf8f3;
  --paper-card: #ffffff;
  --pine: #3a7d44;
  --pine-deep: #2c5e34;
  --line: #e7e3d8;
  --gold: #b08a3e;
  --max: 720px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.7;
  font-size: 17px;
}

/* Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px 24px;
}
.brand {
  font-family: "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
  font-weight: 700;
  font-size: 20px;
  color: var(--pine-deep);
  text-decoration: none;
  letter-spacing: 0.2px;
}
.site-nav { display: flex; align-items: center; gap: 18px; }
.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 15px;
}
.site-nav a:hover { color: var(--pine); }
.lang-switch {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
}

/* Content */
.content {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 24px 64px;
}
.content h1 {
  font-size: 30px;
  line-height: 1.25;
  color: var(--pine-deep);
  margin: 24px 0 12px;
}
.content h2 {
  font-size: 21px;
  margin: 36px 0 10px;
  color: var(--ink);
}
.content h3 { font-size: 18px; margin: 24px 0 8px; }
.content p { margin: 12px 0; color: var(--ink); }
.content a { color: var(--pine); }
.content ul { padding-left: 22px; }
.content li { margin: 6px 0; }
.content strong { color: var(--ink); }
.content hr { border: none; border-top: 1px solid var(--line); margin: 40px 0; }

/* Tables (privacy processor list etc.) */
.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 15px;
}
.content th, .content td {
  border: 1px solid var(--line);
  padding: 8px 12px;
  text-align: left;
  vertical-align: top;
}
.content th { background: #f3efe6; }

/* Hero (landing) */
.hero {
  text-align: center;
  padding: 24px 0 8px;
}
.hero h1 {
  font-family: "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
  font-size: 32px;
  line-height: 1.35;
}

/* 主理人文章 */
.signature {
  text-align: right;
  color: var(--ink-soft);
  font-family: "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
  margin-top: 32px;
}
.cta-row.center { text-align: center; margin: 36px 0 8px; }
.contact-line { text-align: center; color: var(--ink-soft); font-size: 15px; }
.hero .app-icon {
  width: 96px;
  height: 96px;
  border-radius: 22%;
  box-shadow: 0 4px 14px rgba(43, 43, 41, 0.12);
  margin-top: 8px;
}
.hero h1 { margin-top: 16px; }
.hero .tagline {
  font-size: 19px;
  color: var(--ink-soft);
  max-width: 560px;
  margin: 8px auto 0;
}
.cta-row { margin: 24px 0; }
.btn,
.content a.btn {
  display: inline-block;
  background: var(--pine);
  color: #fff;
  text-decoration: none;
  padding: 11px 22px;
  border-radius: 12px;
  font-weight: 600;
}
.btn:hover { background: var(--pine-deep); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  max-width: var(--max);
  margin: 0 auto;
  padding: 24px;
  font-size: 14px;
  color: var(--ink-soft);
}
.site-footer a { color: var(--pine); text-decoration: none; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 12px; }
.footer-nav a { font-size: 14px; }
.muted { color: #9a978d; font-size: 13px; }

@media (max-width: 520px) {
  body { font-size: 16px; }
  .content h1 { font-size: 26px; }
}