/* デスクの余白 — サイト共通のスタイル。
   白と薄いベージュを基調に、濃いグリーンをアクセントにする。 */
:root {
  --bg: #fcfbf7;
  --beige: #f4efe3;
  --beige-soft: #faf7ef;
  --ink: #2a2a26;
  --muted: #5f5c52;
  --green: #1f4d35;
  --green-mid: #2f6b4a;
  --green-pale: #e8f0ea;
  --line: #e4ddcd;
  --measure: 44rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic Medium",
               system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  line-height: 1.95;
  letter-spacing: 0.02em;
  text-rendering: optimizeLegibility;
}

a { color: var(--green); }
a:hover { color: var(--green-mid); }

/* ---------- preview marker (every page) ---------- */
.preview-bar {
  margin: 0;
  padding: 0.5rem 1rem;
  background: var(--green);
  color: #f7f4ea;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-align: center;
  position: sticky;
  top: 0;
  z-index: 10;
}

/* ---------- header / footer ---------- */
.site-head {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2.2rem 1.6rem 1.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.site-name {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-decoration: none;
  color: var(--green);
}
.site-nav { display: flex; gap: 1.2rem; font-size: 0.92rem; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover { color: var(--green); text-decoration: underline; }

.site-foot {
  max-width: var(--measure);
  margin: 4rem auto 0;
  padding: 1.8rem 1.6rem 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.8;
}
.site-foot p { margin: 0 0 0.5rem; }

/* ---------- shared layout ---------- */
main { max-width: var(--measure); margin: 0 auto; padding: 2.4rem 1.6rem 0; }

h1 {
  font-size: 1.62rem;
  line-height: 1.6;
  letter-spacing: 0.01em;
  margin: 0 0 1.4rem;
}
h2 {
  font-size: 1.16rem;
  line-height: 1.7;
  margin: 3.2rem 0 1rem;
  padding-left: 0.8rem;
  border-left: 4px solid var(--green);
  /* keep anchored headings clear of the sticky preview bar */
  scroll-margin-top: 4rem;
}
h3 { font-size: 1.05rem; line-height: 1.7; margin: 0 0 0.6rem; }
p { margin: 0 0 1.4rem; }
ul, ol { margin: 0 0 1.5rem; padding-left: 1.4rem; }
li { margin-bottom: 0.6rem; }

/* ---------- home ---------- */
.hero { padding: 1.6rem 0 0.4rem; }
.hero h1 { font-size: 1.9rem; letter-spacing: 0.08em; margin-bottom: 0.8rem; }
.lead { color: var(--muted); font-size: 1.02rem; margin-bottom: 0.6rem; }

.cards h2, .home-note h2 { border-left: none; padding-left: 0; font-size: 0.9rem;
  letter-spacing: 0.18em; color: var(--muted); margin-bottom: 1rem; }
.home-note h2 { margin-top: 0.2rem; }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.6rem 1.5rem 1.2rem;
  box-shadow: 0 1px 2px rgba(42, 42, 38, 0.04);
}
.card-meta { color: var(--muted); font-size: 0.82rem; letter-spacing: 0.08em; margin-bottom: 0.5rem; }
.card h3 { font-size: 1.18rem; line-height: 1.65; }
.card h3 a { color: var(--ink); text-decoration: none; }
.card h3 a:hover { color: var(--green); text-decoration: underline; }
.card p { margin-bottom: 0.9rem; color: #3c3b35; }
.card-more { margin: 0; }
.card-more a { font-size: 0.94rem; text-decoration: none; font-weight: 700; }
.card-more a:hover { text-decoration: underline; }

.home-note {
  margin-top: 3rem;
  background: var(--beige-soft);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.4rem 1.5rem 0.4rem;
}
.home-note p { color: var(--muted); font-size: 0.94rem; }

/* ---------- article ---------- */
.breadcrumb { font-size: 0.9rem; margin-bottom: 1.6rem; }
.breadcrumb a, .back a { text-decoration: none; }
.breadcrumb a:hover, .back a:hover { text-decoration: underline; }
.back { margin: 3.5rem 0 0; padding-top: 1.4rem; border-top: 1px solid var(--line); }

.draft-note {
  background: var(--beige);
  border-left: 4px solid var(--green-mid);
  border-radius: 0 8px 8px 0;
  padding: 1rem 1.2rem;
  font-size: 0.94rem;
  color: #3b3a33;
}

.lead-in p:last-child { margin-bottom: 0; }

/* 運営者・お問い合わせ */
.contact {
  margin: 0 0 1.4rem;
  padding: 1.1rem 1.3rem;
  background: var(--beige-soft);
  border: 1px solid var(--line);
  border-radius: 10px;
}
.contact dt { font-size: 0.84rem; letter-spacing: 0.1em; color: var(--muted); }
.contact dd { margin: 0.1rem 0 0.9rem; word-break: break-all; }
.contact dd:last-child { margin-bottom: 0; }

.toc {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.2rem 1.5rem 0.9rem;
  margin: 2.2rem 0 2.6rem;
}
.toc h2 {
  margin: 0 0 0.8rem;
  padding: 0;
  border: none;
  font-size: 0.86rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}
/* headings carry their own numbers — no list markers, no second numbering */
.toc ul { margin: 0; padding-left: 0; list-style: none; }
.toc li { margin-bottom: 0.45rem; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }

.checklist { list-style: none; padding-left: 0; margin-bottom: 1.6rem; }
.checklist li {
  border-bottom: 1px dashed var(--line);
  padding: 0.45rem 0;
  margin: 0;
}
.checklist li:last-child { border-bottom: none; }
.checklist label { display: flex; gap: 0.75rem; align-items: flex-start; cursor: pointer; }
.checklist input[type="checkbox"] {
  margin: 0.55rem 0 0;
  flex: none;
  width: 1.05rem;
  height: 1.05rem;
  accent-color: var(--green);
}
.checklist span { flex: 1; }
.checklist label:hover span { color: var(--green-mid); }

.note-line {
  margin-top: 2.4rem;
  padding: 0.9rem 1.1rem;
  background: var(--green-pale);
  border-radius: 8px;
  font-size: 0.9rem;
  color: #35443a;
}

.table-wrap { overflow-x: auto; margin: 0 0 1.8rem; border: 1px solid var(--line); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; min-width: 30rem; background: #fff; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--beige); font-weight: 700; white-space: nowrap; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:nth-child(even) td { background: var(--beige-soft); }
td:empty::after { content: ""; display: block; min-height: 1.2rem; }

/* ---------- narrow screens (390px and under) ---------- */
@media (max-width: 480px) {
  body { line-height: 1.9; }
  main { padding: 1.8rem 1.1rem 0; }
  .site-head { padding: 1.5rem 1.1rem 1.1rem; }
  .site-foot { padding: 1.4rem 1.1rem 2.4rem; }
  h1 { font-size: 1.38rem; }
  .hero h1 { font-size: 1.55rem; }
  h2 { font-size: 1.08rem; margin-top: 2.6rem; }
  .card, .toc, .home-note { padding-left: 1.1rem; padding-right: 1.1rem; }
  .preview-bar { letter-spacing: 0.1em; }
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}