/* テチテチ 法務・サポートサイト 共通スタイル。アプリのブランドトークンに合わせる。 */
:root {
  --milk: #FBF7F0;
  --cream: #F4EEE3;
  --sumi: #2E2A26;
  --paw-pink: #FF6F91;
  --muted: #8A847C;
  --max: 720px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--milk);
  color: var(--sumi);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.8;
  font-size: 16px;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px 20px 64px;
}

header.site {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 20px;
  max-width: var(--max);
  margin: 0 auto;
}

header.site .logo {
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.02em;
  /* 見出し系は丸ゴシック寄りに（アプリの SF Rounded / にくまるロゴと調和） */
  font-family: "Hiragino Maru Gothic ProN", "Hiragino Sans", -apple-system, sans-serif;
  color: var(--sumi);
  text-decoration: none;
}

header.site .paw { color: var(--paw-pink); }

h1, h2 {
  font-family: "Hiragino Maru Gothic ProN", "Hiragino Sans", -apple-system, sans-serif;
  line-height: 1.5;
}

h1 { font-size: 26px; margin: 8px 0 4px; }
h2 { font-size: 19px; margin: 36px 0 8px; }

.updated { color: var(--muted); font-size: 13px; margin-bottom: 8px; }

a { color: var(--paw-pink); }

ul { padding-left: 1.2em; }
li { margin: 4px 0; }

.card {
  background: #fff;
  border-radius: 16px;
  padding: 18px 18px;
  margin: 16px 0;
}

.btn {
  display: inline-block;
  background: var(--paw-pink);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  padding: 12px 22px;
  border-radius: 999px;
}

footer.site {
  border-top: 1px solid var(--cream);
  margin-top: 48px;
  padding-top: 20px;
  color: var(--muted);
  font-size: 13px;
}

footer.site a { color: var(--muted); margin-right: 14px; }

/* ---- ナビゲーション ---- */
header.site { justify-content: space-between; }
nav.site-nav { display: flex; gap: 24px; align-items: center; }
nav.site-nav a {
  color: var(--sumi);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  opacity: 0.55;
  transition: opacity 0.15s;
}
nav.site-nav a:hover,
nav.site-nav a[aria-current] { opacity: 1; color: var(--paw-pink); }

/* ---- ヒーロー ---- */
.hero {
  padding: 56px 0 48px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(22px, 5vw, 38px);
  margin: 0 0 14px;
  line-height: 1.45;
}
.hero .sub {
  color: var(--muted);
  font-size: 16px;
  max-width: 480px;
  margin: 0 auto 32px;
}
.badge-group {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 24px 0;
}
.btn-soon {
  display: inline-block;
  background: var(--cream);
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 999px;
  cursor: default;
}
.btn-outline {
  display: inline-block;
  border: 1.5px solid var(--paw-pink);
  color: var(--paw-pink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  padding: 11px 22px;
  border-radius: 999px;
  transition: background 0.15s;
}
.btn-outline:hover { background: var(--paw-pink); color: #fff; }

/* ---- 特徴グリッド ---- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
  margin: 40px 0;
}
.feature-card {
  background: #fff;
  border-radius: 18px;
  padding: 26px 20px;
  text-align: center;
}
.feature-card .icon { font-size: 34px; display: block; margin-bottom: 14px; }
.feature-card h3 { font-size: 15px; margin: 0 0 8px; }
.feature-card p { font-size: 13px; color: var(--muted); margin: 0; line-height: 1.7; }

/* ---- 記事カード ---- */
.article-list { list-style: none; padding: 0; margin: 0; }
.article-card {
  display: block;
  background: #fff;
  border-radius: 16px;
  padding: 22px 24px;
  margin-bottom: 12px;
  text-decoration: none;
  color: var(--sumi);
  transition: transform 0.15s, box-shadow 0.15s;
}
.article-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(46,42,38,.07);
  color: var(--sumi);
}
.article-meta { font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.article-card h3 { margin: 0 0 8px; font-size: 17px; line-height: 1.5; }
.article-card .excerpt { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.7; }
.tag {
  display: inline-block;
  background: var(--cream);
  color: var(--muted);
  font-size: 11px;
  padding: 2px 9px;
  border-radius: 999px;
  margin-right: 4px;
  font-weight: 500;
}

/* ---- アルゴリズム ---- */
.formula-box {
  background: var(--sumi);
  color: #f0ede8;
  border-radius: 18px;
  padding: 28px 30px;
  font-family: "Menlo", "Monaco", "Courier New", monospace;
  font-size: 14px;
  line-height: 2.2;
  margin: 24px 0;
  overflow-x: auto;
}
.formula-box .key { color: var(--paw-pink); font-weight: bold; }
.formula-box .comment { color: #8a7f76; font-size: 12px; }
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
  margin: 24px 0;
}
.metric-card {
  background: #fff;
  border-radius: 16px;
  padding: 20px 18px;
}
.metric-card .pt {
  font-size: 26px;
  font-weight: 800;
  font-family: "Hiragino Maru Gothic ProN", sans-serif;
  color: var(--paw-pink);
  line-height: 1;
  margin-bottom: 6px;
}
.metric-card h4 { font-size: 14px; margin: 0 0 6px; }
.metric-card p { font-size: 12px; color: var(--muted); margin: 0; line-height: 1.7; }
.history { list-style: none; padding: 0; margin: 0; }
.history li {
  padding: 14px 0 14px 26px;
  border-left: 2px solid var(--cream);
  margin-left: 10px;
  position: relative;
  font-size: 14px;
}
.history li::before {
  content: "";
  width: 8px; height: 8px;
  background: var(--paw-pink);
  border-radius: 50%;
  position: absolute;
  left: -5px; top: 20px;
}
.history .h-date { color: var(--muted); font-size: 12px; display: block; margin-bottom: 4px; }
.badge-status {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 999px;
  margin-left: 8px;
}
.badge-status.planned { background: var(--cream); color: var(--muted); }
.badge-status.live { background: #d4f5e5; color: #2a7a56; }

/* ---- 記事本文 ---- */
.prose h2 { margin-top: 48px; }
.prose p { margin: 0 0 20px; }
.prose ul, .prose ol { padding-left: 1.4em; margin-bottom: 20px; }
.prose li { margin: 6px 0; }
.prose blockquote {
  border-left: 3px solid var(--paw-pink);
  margin: 24px 0;
  padding: 4px 0 4px 20px;
  color: var(--muted);
  font-style: italic;
}
.prose hr {
  border: none;
  border-top: 1px solid var(--cream);
  margin: 40px 0;
}
.back-link { font-size: 14px; color: var(--muted); text-decoration: none; }
.back-link:hover { color: var(--paw-pink); }