:root {
  --bg: #FAF9F6;
  --teal: #1A5F6A;
  --teal-deep: #14484F;
  --teal-light: #E8F2F3;
  --text: #2C2C2C;
  --muted: #6E6E67;
  --border: #E4E2DC;
  --white: #FFFFFF;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--teal); text-underline-offset: 3px; }
a:focus-visible { outline: 3px solid var(--teal); outline-offset: 3px; }
.wrap { width: min(100% - 3rem, 960px); margin: 0 auto; }
.article-wrap { width: min(100% - 3rem, 720px); margin: 0 auto; }

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  padding: 0.7rem 1rem;
  border-radius: 8px;
  background: var(--white);
  color: var(--teal-deep);
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-200%);
}
.skip-link:focus { transform: translateY(0); }

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--border);
}

.brand {
  font-family: 'DM Serif Display', serif;
  font-size: 1.2rem;
  color: var(--teal);
  text-decoration: none;
}

.nav-cta, .store-cta {
  display: inline-block;
  border-radius: 999px;
  background: var(--teal);
  color: var(--white);
  font-weight: 600;
  text-decoration: none;
}

.nav-cta { padding: 0.5rem 1rem; font-size: 0.88rem; }
.store-cta { padding: 0.8rem 1.25rem; }
.nav-cta:hover, .store-cta:hover { background: var(--teal-deep); }

.breadcrumb { margin-top: 2.5rem; color: var(--muted); font-size: 0.86rem; }
.breadcrumb a { color: var(--muted); }

header { padding: 1.25rem 0 2.2rem; border-bottom: 1px solid var(--border); }
header h1 {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(2.2rem, 7vw, 3.6rem);
  font-weight: 400;
  line-height: 1.08;
  margin: 0 0 1rem;
}
header .dek { font-size: 1.12rem; color: var(--muted); max-width: 60ch; margin: 0; }

main { padding: 2.5rem 0 4rem; }
h2, h3 { font-family: 'DM Serif Display', serif; font-weight: 400; line-height: 1.25; }
h2 { color: var(--teal-deep); font-size: 1.65rem; margin: 2.6rem 0 0.8rem; }
h3 { font-size: 1.2rem; margin: 1.8rem 0 0.5rem; }
p, li { font-size: 1rem; }
ul { padding-left: 1.3rem; }

.example {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  margin: 1.4rem 0 2rem;
}

.example-card { border: 1px solid var(--border); border-radius: 14px; padding: 1.1rem; background: var(--white); }
.example-card.after { background: var(--teal-light); border-color: transparent; }
.example-label { display: block; color: var(--muted); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; margin-bottom: 0.55rem; text-transform: uppercase; }
.example-card p { margin: 0; }

.principle { border-left: 3px solid var(--teal); background: var(--teal-light); border-radius: 0 10px 10px 0; padding: 1rem 1.2rem; margin: 1.5rem 0; }
.principle p { margin: 0; }

.cta-box { margin-top: 3rem; padding: 1.6rem; border-radius: 18px; background: var(--teal); color: var(--white); }
.cta-box h2 { margin: 0 0 0.5rem; color: var(--white); }
.cta-box p { margin: 0 0 1rem; opacity: 0.9; }
.cta-box .store-cta { background: var(--white); color: var(--teal-deep); }

.related { padding: 2.5rem 0; border-top: 1px solid var(--border); }
.related h2 { margin-top: 0; }
.related ul { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem 1.5rem; list-style: none; padding: 0; }

footer { padding: 2rem 0; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.85rem; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.footer-inner a { color: var(--muted); }

@media (max-width: 650px) {
  .wrap, .article-wrap { width: min(100% - 2rem, 720px); }
  .example, .related ul { grid-template-columns: 1fr; }
}