:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --text: #1f2328;
  --muted: #5f6670;
  --border: #e3e3df;
  --link: #1f5fbf;
  --accent: #1f2328;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 4px 16px rgba(0, 0, 0, .04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --surface: #1d2024;
    --text: #e8eaed;
    --muted: #9aa1aa;
    --border: #2e3237;
    --link: #79a8ff;
    --accent: #e8eaed;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Segoe UI", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.wrap {
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
  padding: 0 20px;
}

a { color: var(--link); text-underline-offset: 2px; }

/* ヘッダー */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.site-social {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.site-social:hover { color: var(--text); }

.site-title {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: .01em;
}

main.wrap { flex: 1; padding-top: 32px; padding-bottom: 64px; }

/* トップは 3 列で並べるので、本文ページより広くとる */
body:has(.content-home) .wrap { max-width: 1120px; }

/* パンくずは文字が小さいので、ヘッダーに少し寄せる。ボタンの有無で見出しの位置がずれないよう高さをそろえる */
.page-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  min-height: 40px;
  margin: -12px 0 16px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  color: var(--muted);
  font-size: 14px;
}

.breadcrumb a { color: inherit; }

/* 本文 (Markdown) */

.content { overflow-wrap: anywhere; }

.content h1 {
  font-size: 30px;
  line-height: 1.35;
  margin: 0 0 16px;
}

.content h2 {
  font-size: 22px;
  line-height: 1.4;
  margin: 44px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.content h3 {
  font-size: 17px;
  margin: 28px 0 6px;
}

.content p, .content ul, .content ol { margin: 0 0 14px; }

.content ul, .content ol { padding-left: 1.4em; }

.content li + li { margin-top: 4px; }

.content hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 44px 0 28px;
}

.content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .9em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .1em .35em;
}

.content table { border-collapse: collapse; width: 100%; margin: 0 0 16px; }

.content th, .content td {
  border: 1px solid var(--border);
  padding: 6px 10px;
  text-align: left;
}

/* ボタン */

.button, .badge {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--surface);
}

.button:hover { border-color: var(--muted); }

.button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}

.button-primary:hover { opacity: .85; border-color: var(--accent); }

.badge { color: var(--muted); font-weight: 500; }

/* トップページ */

.hero { margin: 0 0 16px; }

.hero p { color: var(--muted); margin: 0; }

.content .section-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: .04em;
  border: 0;
  padding: 0;
  margin: 36px 0 14px;
}

.content .app-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .content .app-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1000px) {
  .content .app-grid { grid-template-columns: repeat(3, 1fr); }
}

.content .app-grid li + li { margin-top: 0; }

.app-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.app-card-head { display: flex; align-items: center; gap: 14px; }

.app-icon {
  flex: none;
  width: 56px;
  height: 56px;
  border-radius: 13px;
  border: 1px solid var(--border);
}

.app-card h3 { margin: 0; font-size: 18px; line-height: 1.4; }

.app-card h3 a { color: var(--text); text-decoration: none; }

.app-card h3 a:hover { text-decoration: underline; }

.app-reading { color: var(--muted); font-size: 13px; line-height: 1.4; }

.hero { display: grid; gap: 12px; }

.kind-nav { display: flex; flex-wrap: wrap; gap: 8px; }

.kind-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}

.kind-nav a:hover { border-color: var(--muted); }

.kind-count { color: var(--muted); font-size: 12px; font-weight: 500; margin-left: 6px; }

.kind-nav .kind-count { margin-left: 0; }

.app-meta { display: grid; gap: 6px; margin: 0; font-size: 13px; }

.app-meta > div { display: flex; align-items: baseline; gap: 10px; }

.app-meta dt { flex: none; width: 4.8em; color: var(--muted); }

.app-meta dd { margin: 0; }

.app-soon { color: var(--muted); }

.app-summary { margin: 0; flex: 1; }

.app-actions { display: grid; gap: 8px; }

.app-actions > .button, .app-actions > .badge { justify-content: center; }

.app-links { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

.app-links .button { justify-content: center; font-weight: 500; }

.app-actions .button, .app-actions .badge { min-height: 38px; padding: 0 8px; font-size: 13px; white-space: nowrap; }

@media (max-width: 420px) {
  .wrap { padding: 0 16px; }
  .content h1 { font-size: 26px; }
  .app-card { padding: 16px; }
}