:root {
  --teal: #5A8A8A;
  --teal-dark: #467070;
  --teal-light: #E8F0F0;
  --bg: #F5F5F5;
  --text: #2A2A2A;
  --text-soft: #5A6A6A;
  --white: #FFFFFF;
  --radius: 16px;
  --shadow: 0 8px 30px rgba(70,112,112,0.12);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 0 24px; }

.top {
  background: linear-gradient(160deg, var(--teal) 0%, var(--teal-dark) 100%);
  color: var(--white);
  padding: 28px 0;
}
.top a {
  color: var(--white);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  opacity: 0.92;
}
.top a:hover { opacity: 1; }

article {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin: 48px auto;
  padding: 56px 48px;
  overflow: hidden;
}
@media (max-width: 640px) {
  article { padding: 40px 24px; margin: 24px auto; }
}
img.hero {
  display: block;
  width: calc(100% + 96px);
  margin: -56px -48px 32px;
  border-top-left-radius: var(--radius);
  border-top-right-radius: var(--radius);
  height: auto;
}
@media (max-width: 640px) {
  img.hero { width: calc(100% + 48px); margin: -40px -24px 24px; }
}

.meta {
  color: var(--text-soft);
  font-size: 14px;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
h1 {
  font-size: 34px;
  line-height: 1.25;
  color: var(--teal-dark);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.lede {
  font-size: 19px;
  color: var(--text-soft);
  margin: 16px 0 32px;
  line-height: 1.55;
}
h2 {
  font-size: 22px;
  color: var(--teal-dark);
  margin: 40px 0 16px;
  letter-spacing: -0.005em;
}
p, ul, ol { margin-bottom: 18px; font-size: 17px; }
ul, ol { padding-left: 22px; }
li { margin-bottom: 8px; }
a { color: var(--teal-dark); }
blockquote {
  border-left: 3px solid var(--teal);
  padding: 4px 0 4px 20px;
  margin: 24px 0;
  color: var(--text-soft);
  font-style: italic;
}
.cta {
  display: inline-block;
  background: var(--teal);
  color: var(--white);
  padding: 14px 28px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  margin-top: 12px;
}
.cta:hover { background: var(--teal-dark); }

footer {
  text-align: center;
  color: var(--text-soft);
  font-size: 13px;
  padding: 32px 0 48px;
}
footer a { color: var(--text-soft); text-decoration: none; }
footer a:hover { color: var(--teal-dark); }

.post-list { list-style: none; padding: 0; }
.post-list li { margin-bottom: 24px; padding-bottom: 24px; border-bottom: 1px solid var(--teal-light); }
.post-list li:last-child { border-bottom: none; }
.post-list a { color: var(--teal-dark); text-decoration: none; font-weight: 600; font-size: 20px; }
.post-list a:hover { text-decoration: underline; }
.post-list .excerpt { color: var(--text-soft); font-size: 16px; margin-top: 6px; }