:root {
  --bg: #ffffff;
  --paper: #ffffff;
  --ink: #1a1a1a;
  --navy: #1B3A4B;
  --gold: #C4A35A;
  --muted: #5e656b;
  --line: #e6e6e6;
  --soft: #faf8f3;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Sarabun", "Noto Sans Thai", sans-serif;
  background: #ffffff;
  color: var(--ink);
  line-height: 1.75;
  font-size: 1.0625rem;
}
a { color: var(--navy); }
img { max-width: 100%; }
.wrap {
  width: min(44rem, calc(100% - 2.5rem));
  margin: 0 auto;
}
header.site {
  background: #ffffff;
  border-bottom: 1px solid var(--line);
}
header.site .bar {
  width: min(64rem, calc(100% - 2rem));
  margin: 0 auto;
  min-height: 3.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  flex-wrap: nowrap;
  padding: 0.45rem 0;
}
.brand {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  line-height: 0;
  background: transparent;
  text-decoration: none;
}
header.site img.logo {
  display: block;
  height: 40px;
  width: auto;
  max-height: 40px;
  max-width: 168px;
  object-fit: contain;
  background: transparent;
}
header.site svg { display: none; }
header.site nav {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 1.05rem;
  margin-left: auto;
}
nav a {
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1.2;
}
header.site nav a { font-size: 0.92rem; }
nav a:hover { color: var(--gold); }
main { padding: 3.25rem 0 4.5rem; }
.kicker {
  margin: 0 0 0.45rem;
  color: var(--gold);
  font-weight: 600;
  font-size: 0.92rem;
}
h1, h2 {
  font-family: "Noto Serif Thai", "Sarabun", serif;
  font-weight: 600;
  line-height: 1.45;
  color: var(--navy);
}
h1 {
  font-size: clamp(1.7rem, 4vw, 2.15rem);
  margin: 0 0 0.85rem;
}
h2 {
  font-size: 1.28rem;
  margin: 2rem 0 0.45rem;
}
.lede {
  font-size: 1.12rem;
  margin-top: 0;
}
.meta { color: var(--muted); font-size: 0.95rem; }
article {
  background: #ffffff;
  border: 1px solid var(--line);
  padding: 2.4rem 2.3rem 2.6rem;
}
ol.steps, article ul { padding-left: 1.2rem; }
ol.steps li, article ul li { margin: 0.45rem 0; }
.note {
  margin: 1.15rem 0;
  padding: 0.85rem 1rem;
  background: var(--soft);
  border-left: 3px solid var(--gold);
}
ol.index {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
  background: var(--paper);
  border: 1px solid var(--line);
}
ol.index li { border-top: 1px solid var(--line); }
ol.index li:first-child { border-top: 0; }
ol.index a {
  display: block;
  padding: 1.05rem 1.2rem;
  text-decoration: none;
  color: inherit;
}
ol.index strong {
  display: block;
  font-family: "Noto Serif Thai", serif;
  font-weight: 600;
  font-size: 1.12rem;
  color: var(--ink);
}
ol.index span {
  display: block;
  margin-top: 0.15rem;
  color: var(--muted);
}
ol.index a:hover strong { color: var(--gold); }
footer.site {
  border-top: 1px solid var(--line);
  padding: 1.4rem 0 2.4rem;
  color: var(--muted);
  font-size: 0.95rem;
}
footer.site nav { margin-bottom: 0.45rem; }
@media (max-width: 640px) {
  .wrap { width: min(44rem, calc(100% - 1.5rem)); }
  article { padding: 1.25rem 1rem 1.5rem; }
  header.site .bar {
    width: min(64rem, calc(100% - 1.5rem));
    flex-wrap: wrap;
  }
  header.site img.logo {
    height: 36px;
    max-height: 36px;
    max-width: 150px;
  }
}
@media (max-width: 560px) {
  header.site nav {
    flex: 1 1 auto;
    margin-left: auto;
    justify-content: flex-end;
    gap: 0.7rem;
  }
  header.site nav a { font-size: 0.84rem; }
}

figure.hero {
  margin: 0.4rem 0 1.4rem;
}
figure.hero img {
  display: block;
  width: 100%;
  height: auto;
  max-height: none;
  border-radius: 12px;
  object-fit: cover;
}