/* ClinicBasics — calm, checklist-like, mobile-first */
:root {
  --bg: #f7f8f6;
  --surface: #ffffff;
  --text: #1f2a24;
  --muted: #5a6b62;
  --border: #d9e2dc;
  --accent: #2f6f5e;
  --accent-soft: #e8f3ef;
  --warn-bg: #f4f1e8;
  --warn-border: #c9b98a;
  --max: 720px;
  --radius: 10px;
  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  text-decoration-thickness: 2px;
}

img {
  max-width: 100%;
  height: auto;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header__inner {
  max-width: calc(var(--max) + 2rem);
  margin: 0 auto;
  padding: 0.85rem 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  justify-content: space-between;
}

.logo {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.logo:hover {
  color: var(--accent);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  font-size: 0.9rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--accent);
  text-decoration: underline;
}

.main {
  max-width: calc(var(--max) + 2rem);
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

.hero {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem;
  margin-bottom: 1.5rem;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: 1.55rem;
  line-height: 1.4;
  font-weight: 700;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.disclaimer,
.disclosure-box {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin: 1.25rem 0;
  font-size: 0.92rem;
}

.disclaimer strong,
.disclosure-box strong {
  display: block;
  margin-bottom: 0.35rem;
}

.card-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease;
}

.card:hover {
  border-color: var(--accent);
}

.card__title {
  margin: 0 0 0.35rem;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--accent);
}

.card__meta {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.section {
  margin: 2rem 0 0;
}

.section h2 {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
}

.prose h1 {
  font-size: 1.45rem;
  line-height: 1.4;
  margin: 0 0 1rem;
}

.prose h2 {
  font-size: 1.15rem;
  margin: 2rem 0 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border);
}

.prose h3 {
  font-size: 1.02rem;
  margin: 1.5rem 0 0.5rem;
}

.prose p,
.prose ul,
.prose ol,
.prose table {
  margin: 0 0 1rem;
}

.prose ul,
.prose ol {
  padding-left: 1.35rem;
}

.prose li {
  margin-bottom: 0.35rem;
}

.prose li > ul,
.prose li > ol {
  margin-top: 0.35rem;
  margin-bottom: 0.35rem;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.prose thead,
.prose tbody,
.prose tr {
  width: 100%;
}

.prose table {
  display: table;
}

.prose th,
.prose td {
  border: 1px solid var(--border);
  padding: 0.55rem 0.65rem;
  text-align: left;
  vertical-align: top;
}

.prose th {
  background: var(--accent-soft);
  font-weight: 600;
}

.prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.5rem 0;
}

.prose .checklist {
  list-style: none;
  padding-left: 0;
}

.prose .checklist li {
  padding-left: 1.5rem;
  position: relative;
}

.prose .checklist li::before {
  content: "☐";
  position: absolute;
  left: 0;
  color: var(--muted);
}

.note {
  font-size: 0.92rem;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 1.5rem 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.site-footer__inner {
  max-width: calc(var(--max) + 2rem);
  margin: 0 auto;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-bottom: 0.75rem;
}

.site-footer a {
  color: var(--muted);
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 1rem;
}

.breadcrumb a {
  color: var(--muted);
}

@media (max-width: 520px) {
  .hero h1,
  .prose h1 {
    font-size: 1.3rem;
  }

  .nav {
    width: 100%;
  }
}