/* KakiDoc 公式サイト共通スタイル */
:root {
  --accent: #5856d6;
  --bg: #ffffff;
  --bg-soft: #f5f5f7;
  --text: #1d1d1f;
  --text-soft: #6e6e73;
  --border: rgba(0, 0, 0, 0.1);
  --radius: 16px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --bg-soft: #1c1c1e;
    --text: #f5f5f7;
    --text-soft: #98989d;
    --border: rgba(255, 255, 255, 0.15);
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 960px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 720px; }

header.site-header {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
header.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { font-weight: 700; font-size: 18px; color: var(--text); }
.brand:hover { text-decoration: none; }
nav.site-nav a { margin-left: 20px; font-size: 14px; color: var(--text-soft); }
nav.site-nav a:hover { color: var(--accent); }

.hero { text-align: center; padding: 88px 0 56px; }
.hero h1 { font-size: clamp(32px, 6vw, 56px); line-height: 1.2; margin: 0 0 16px; letter-spacing: -0.02em; }
.hero p.lead { font-size: clamp(16px, 2.5vw, 20px); color: var(--text-soft); margin: 0 auto 32px; max-width: 640px; }
.hero .accent { color: var(--accent); }

.badge-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.store-badge {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 999px;
  background: var(--text);
  color: var(--bg);
  font-weight: 600;
  font-size: 15px;
}
.store-badge:hover { text-decoration: none; opacity: 0.85; }
.store-badge.soon { background: var(--bg-soft); color: var(--text-soft); cursor: default; }

.screenshot-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 40px 0 72px;
}
@media (max-width: 720px) {
  .screenshot-strip { grid-template-columns: 1fr; }
  .screenshot-slot { max-width: 280px; margin: 0 auto; width: 100%; }
}
.screenshot-slot {
  aspect-ratio: 9 / 19.5;
  border-radius: 28px;
  border: 1px dashed var(--border);
  background: var(--bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-soft);
  font-size: 13px;
  overflow: hidden;
}
.screenshot-slot img { width: 100%; height: 100%; object-fit: cover; }

.features { padding: 48px 0 72px; }
.features h2 { text-align: center; font-size: 28px; margin: 0 0 40px; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-soft);
  border-radius: var(--radius);
  padding: 24px;
}
.feature-card h3 { margin: 0 0 8px; font-size: 17px; }
.feature-card p { margin: 0; font-size: 14px; color: var(--text-soft); }

main.doc { padding: 56px 0 80px; }
main.doc h1 { font-size: 30px; margin: 0 0 8px; }
main.doc .doc-date { color: var(--text-soft); font-size: 13px; margin-bottom: 40px; }
main.doc h2 { font-size: 20px; margin: 40px 0 12px; }
main.doc h3 { font-size: 16px; margin: 28px 0 8px; }
main.doc p, main.doc li { font-size: 15px; }
main.doc ul, main.doc ol { padding-left: 22px; }
main.doc table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 12px 0 20px;
}
main.doc th, main.doc td {
  text-align: left;
  padding: 8px 12px;
  border: 1px solid var(--border);
  vertical-align: top;
}
main.doc th { background: var(--bg-soft); white-space: nowrap; }

footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0 48px;
  font-size: 13px;
  color: var(--text-soft);
}
footer.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
footer.site-footer a { color: var(--text-soft); margin-right: 16px; }