:root {
  --bg: #f7f5f2;
  --surface: #ffffff;
  --text: #1f2320;
  --text-muted: #5b6460;
  --border: #e2ded7;
  --accent: #2f6f4f;
  --accent-text: #ffffff;
  --badge-bg: #e8b64a;
  --badge-text: #16301f;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181a;
    --surface: #1f2224;
    --text: #ecebe8;
    --text-muted: #a3a9a5;
    --border: #33383a;
    --accent: #5fae82;
    --accent-text: #10231a;
    --badge-bg: #e8b64a;
    --badge-text: #16301f;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
}
.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}
header.site-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
}
.badge {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--badge-bg);
  color: var(--badge-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 20px;
  flex-shrink: 0;
}
.site-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.site-title a { color: var(--text); text-decoration: none; }
.eyebrow {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
}
h1 {
  font-size: clamp(24px, 5vw, 34px);
  margin: 10px 0 12px;
  line-height: 1.4;
}
.lede {
  color: var(--text-muted);
  font-size: 16px;
  margin: 0 0 32px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 28px;
  margin-bottom: 18px;
}
.card a.article-link {
  color: var(--text);
  text-decoration: none;
}
.card h2 {
  font-size: 19px;
  margin: 0 0 8px;
}
.card p {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0;
}
article h2 {
  font-size: 21px;
  margin-top: 36px;
}
article h3 {
  font-size: 17px;
  margin-top: 24px;
}
article p, article li {
  font-size: 16px;
}
article ul, article ol {
  padding-left: 22px;
}
.back-link {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
}
.cta {
  margin-top: 40px;
  padding: 24px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
}
.cta p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0 0 12px;
}
.cta a.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-text);
  text-decoration: none;
  font-weight: 600;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  margin-right: 10px;
  margin-bottom: 8px;
}
.tool-card .tool-meta {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.tool-card h2 { font-size: 18px; margin: 0 0 8px; }
.tool-card p { color: var(--text-muted); font-size: 14px; margin: 0 0 14px; }
.tool-btn {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-text);
  text-decoration: none;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 14px;
}
.section-label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  margin: 40px 0 4px;
}
.section-note { color: var(--text-muted); font-size: 14px; margin: 0 0 16px; }
footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  margin-top: 48px;
}
footer a { color: var(--text-muted); }