:root {
  --ink: #2b302c;
  --muted: #646c66;
  --green: #3d5a4c;
  --accent: #a8743a;
  --bg: #f7f5ef;
  --paper: #ffffff;
  --line: #e2ddd1;
  --serif: "Noto Serif JP", serif;
  --sans: "Noto Sans JP", sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 17px; line-height: 1.95; }
a { color: var(--green); }
img { max-width: 100%; height: auto; }
h1, h2, h3, .site-title { word-break: auto-phrase; }
.wrap { max-width: 820px; margin: 0 auto; padding: 0 20px; }

.site-header { background: var(--green); color: #fff; padding: 30px 0 0; }
.site-title { margin: 0; font-family: var(--serif); font-size: clamp(24px, 5vw, 32px); font-weight: 700; line-height: 1.4; }
.site-title a { color: #fff; text-decoration: none; }
.site-desc { margin: 6px 0 18px; font-size: 14px; color: #dfe8e2; line-height: 1.7; }
.nav { display: flex; gap: 24px; border-top: 1px solid rgba(255,255,255,.2); padding: 10px 0; }
.nav a { color: #fff; text-decoration: none; font-size: 15px; }
.nav a:hover { text-decoration: underline; }

main.wrap { padding-top: 36px; padding-bottom: 48px; }
.entry, .post, .profile-box { background: var(--paper); border: 1px solid var(--line); border-radius: 8px; padding: 26px 28px; margin-bottom: 28px; }
.entry h2 { font-family: var(--serif); font-size: 23px; line-height: 1.5; margin: 4px 0; }
.entry h2 a { color: var(--ink); text-decoration: none; }
.entry h2 a:hover { color: var(--green); }
.cat { display: inline-block; margin: 0; font-size: 12px; padding: 0 10px; border-radius: 999px; background: #e8efe9; color: var(--green); }
.meta { margin: 0 0 12px; font-size: 14px; color: var(--muted); }
.more { margin: 0; text-align: right; }
.page-title, .post h1 { font-family: var(--serif); font-size: clamp(24px, 5vw, 30px); line-height: 1.5; margin: 6px 0 10px; color: var(--green); }
.prose h3 { font-family: var(--serif); font-size: 20px; color: var(--green); margin: 38px 0 12px; padding: 4px 0 4px 12px; border-left: 4px solid var(--accent); line-height: 1.5; }
.prose p { margin: 0 0 1.2em; }
.center { text-align: center; }
.avatar { border-radius: 50%; }
.back { margin: 28px 0 0; }

.profile-box { display: flex; gap: 20px; align-items: flex-start; }
.profile-box img { border-radius: 50%; flex: none; }
.profile-box p { margin: 0 0 6px; font-size: 15px; line-height: 1.8; }
.profile-box .name { font-weight: 700; font-size: 16px; }

.site-footer { background: #2f463b; color: #dbe4de; font-size: 14px; padding: 26px 0 18px; }
.site-footer a { color: #fff; }
.related { margin: 0 0 10px; }
.copy { margin: 0; font-size: 12px; color: #aebdb3; }

@media (max-width: 600px) {
  body { font-size: 16px; }
  .entry, .post, .profile-box { padding: 20px; }
  .profile-box { flex-direction: column; align-items: center; text-align: center; }
}