:root {
  --teal: #0d7377;
  --teal-d: #095456;
  --slate: #2c3338;
  --paper: #f7f5f0;
  --rule: #c8c2b4;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Palatino Linotype", "Songti SC", "STSong", "Noto Serif SC", serif;
  background: var(--paper);
  color: var(--slate);
  font-size: 17px;
  line-height: 1.9;
}
a { color: var(--teal); }
a:hover { color: var(--teal-d); }

.masthead {
  display: grid;
  grid-template-columns: 200px 1fr;
  border-bottom: 1px solid var(--rule);
}
.rail {
  background: var(--teal);
  color: #e8f4f4;
  padding: 22px 18px;
  letter-spacing: 0.2em;
}
.rail a.brand {
  color: #e8f4f4;
  text-decoration: none;
  font-size: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.mast-right { padding: 18px 32px 12px; }
.kicker { font-size: 13px; letter-spacing: 0.18em; color: var(--teal); text-transform: uppercase; }
.nav { margin-top: 10px; display: flex; gap: 22px; }
.nav a {
  text-decoration: none;
  color: var(--slate);
  border-bottom: 2px solid transparent;
  padding-bottom: 4px;
}
.nav a.is-current { border-bottom-color: var(--teal); color: var(--teal-d); font-weight: 700; }

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 320px;
  border-bottom: 1px solid var(--rule);
}
.hero-copy { padding: 40px 36px; }
.hero h1 { font-size: 32px; line-height: 1.4; margin: 10px 0 18px; }
.btn-dl {
  display: inline-block;
  border: 2px solid var(--teal);
  color: var(--teal-d);
  text-decoration: none;
  padding: 10px 22px;
  letter-spacing: 0.08em;
}
.btn-dl:hover { background: var(--teal); color: #fff; }
.hero-panel {
  background: linear-gradient(135deg, #0d7377 0%, #14919b 40%, #2c3338 100%);
  color: #eaf6f6;
  padding: 40px 32px;
}
.hero-panel li { margin: 8px 0 8px 18px; }

.page {
  max-width: 1040px;
  margin: 0 auto;
  padding: 36px 28px 64px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 36px;
}
.article .block { margin-bottom: 38px; }
.article h2 {
  font-size: 24px;
  margin-bottom: 12px;
  font-weight: 700;
}
.article p { margin-bottom: 14px; }
.side-note {
  background: #efeae0;
  padding: 18px;
  border-top: 4px solid var(--teal);
  font-size: 15px;
  height: fit-content;
  position: sticky;
  top: 16px;
}
table.vs {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  margin: 12px 0 18px;
}
table.vs th, table.vs td { border-bottom: 1px solid var(--rule); padding: 8px 6px; text-align: left; }
table.vs th { color: var(--teal-d); }
.faq-item { margin-bottom: 16px; }
.faq-item h3 { font-size: 18px; margin-bottom: 6px; }

.site-footer {
  background: var(--slate);
  color: #c5c1b7;
  padding: 28px 32px 36px;
  font-size: 14px;
}
.foot-nav a { color: #8fd4d6; margin-right: 16px; text-decoration: none; }
.site-footer p { margin: 8px 0; }

@media (max-width: 880px) {
  .masthead, .hero, .page { grid-template-columns: 1fr; }
  .rail { padding: 14px; }
  .hero-copy { padding: 24px 18px; }
}