:root {
  --red:   #C8102E;
  --bg:    #EDE8DF;
  --t1:    #1A1714;
  --t2:    #6B6358;
  --t3:    #B0A99F;
  --line:  rgba(0,0,0,0.09);
  --serif: 'Newsreader', Georgia, serif;
  --body:  'Source Serif 4', Georgia, serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--t1);
  font-family: var(--body);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ── nav ── */
nav {
  border-bottom: 1px solid var(--line);
  padding: 0 32px;
  position: relative; z-index: 10;
}
.nav-inner {
  max-width: 1100px; margin: 0 auto;
  height: 52px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  text-decoration: none;
  font-family: var(--serif);
  font-size: 28px; font-weight: 700;
  letter-spacing: -.5px; line-height: 1;
}
.logo b { color: var(--red); font-weight: 800; }
.logo span { color: var(--t1); font-weight: 700; }
.nav-slogan {
  font-family: var(--body);
  font-size: 13px; font-style: italic;
  color: var(--t2);
  margin-left: 16px; padding-left: 16px;
  border-left: 1px solid var(--line);
}
.nav-right { display: flex; align-items: center; gap: 20px; }
.nav-right a {
  font-family: var(--body);
  font-size: 14px; color: var(--t2);
  text-decoration: none; transition: color .15s;
}
.nav-right a:hover { color: var(--t1); }
.nav-sub {
  font-size: 12px; font-weight: 500;
  color: #fff !important; background: var(--red);
  padding: 6px 14px; border-radius: 4px;
  transition: opacity .15s !important;
}
.nav-sub:hover { opacity: .85; }

/* ── 深 watermark ── */
.glyph {
  position: fixed;
  top: 80px; right: -40px;
  font-family: 'Ma Shan Zheng', serif;
  font-size: clamp(320px, 40vw, 560px);
  font-weight: 400;
  color: var(--red);
  opacity: 0.07;
  line-height: 1;
  user-select: none; pointer-events: none;
  z-index: 0;
}

/* ── footer ── */
footer {
  border-top: 1px solid var(--line);
  padding: 24px 32px;
  position: relative; z-index: 1;
}
.footer-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
}
.footer-inner p { font-size: 12px; color: var(--t3); }
.footer-inner b { color: var(--red); font-weight: 400; }
.footer-inner i { font-family: var(--serif); font-style: italic; }