@charset "UTF-8";
/* ============================================================
   くらべてみる ／ レスポンシブ・スタイル
   既存サイト（畜産ZOO鑑）の配色・トーンを保持したまま
   固定幅テーブルレイアウトを流動レイアウトへ刷新。
   ============================================================ */

:root {
  --zoo-cyan:        #00a9d5;  /* ヘッダー帯（水色） */
  --zoo-cyan-dark:   #0089ad;
  --zoo-green:       #00cc66;  /* 現在地ハイライト */
  --panel-cream:     #ffebcd;  /* 説明パネル（暖色） */
  --panel-cream-bd:  #f1d4a8;
  --panel-sage:      #cde5b9;  /* 説明パネル（緑系） */
  --panel-sage-bd:   #b3d597;
  --accent-orange:   #e8821e;  /* 見出しアクセント */
  --link:            #0066cc;
  --link-hover:      #d2410a;
  --ink:             #333333;
  --ink-soft:        #5a5a5a;
  --card-bg:         #ffffff;
  --rule:            rgba(0,0,0,.10);
  --shell-max:       980px;
  --content-max:     760px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: #f3f6f4;
  color: var(--ink);
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic",
               "Meiryo", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

img { border: 0; vertical-align: middle; }
a { color: var(--link); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; color: var(--link-hover); }
:focus-visible { outline: 3px solid var(--zoo-green); outline-offset: 2px; }

/* ---------- 共通ヘッダー（ロゴ＋ハンバーガー：刷新版サイトと共通） ---------- */
.zoo-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #fff;
  border-bottom: 1px solid var(--rule);
  box-shadow: 0 1px 6px rgba(0,0,0,.06);
}
.zoo-header__inner {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.zoo-header__logo { display: inline-flex; line-height: 0; }
.zoo-header__logo img { height: 40px; width: auto; display: block; }

/* ハンバーガーボタン */
.zoo-nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  background: var(--zoo-green);
  color: #fff;
  font: inherit;
  font-weight: 700;
  font-size: 13px;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: background .15s;
}
.zoo-nav-toggle:hover { background: #00b85b; }
.zoo-nav-toggle__bars {
  position: relative;
  width: 20px; height: 14px;
  display: inline-block;
}
.zoo-nav-toggle__bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease, top .25s ease;
}
.zoo-nav-toggle__bars span:nth-child(1) { top: 0; }
.zoo-nav-toggle__bars span:nth-child(2) { top: 6px; }
.zoo-nav-toggle__bars span:nth-child(3) { top: 12px; }
.is-nav-open .zoo-nav-toggle__bars span:nth-child(1) { top: 6px; transform: rotate(45deg); }
.is-nav-open .zoo-nav-toggle__bars span:nth-child(2) { opacity: 0; }
.is-nav-open .zoo-nav-toggle__bars span:nth-child(3) { top: 6px; transform: rotate(-45deg); }

/* ドロワー本体 */
.zoo-gnav {
  position: fixed;
  inset: 0;
  z-index: 1001;
}
.zoo-gnav[hidden] { display: none; }
.zoo-gnav__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.45);
  opacity: 0;
  transition: opacity .3s ease;
}
.is-nav-open .zoo-gnav__overlay { opacity: 1; }
.zoo-gnav__panel {
  position: absolute;
  top: 0; right: 0;
  height: 100%;
  width: min(360px, 86vw);
  background: #fff;
  box-shadow: -6px 0 24px rgba(0,0,0,.18);
  padding: 64px 24px 32px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transform: translateX(100%);
  transition: transform .3s cubic-bezier(.4, 0, .2, 1);
}
.is-nav-open .zoo-gnav__panel { transform: translateX(0); }
.zoo-gnav__close {
  position: absolute;
  top: 14px; right: 16px;
  width: 36px; height: 36px;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  border-radius: 6px;
}
.zoo-gnav__close:hover { background: rgba(0,0,0,.06); }

.zoo-gnav__group { margin-bottom: 22px; }
.zoo-gnav__title {
  margin: 0 0 8px;
  padding-left: 12px;
  font-size: 15px;
  font-weight: 700;
  color: #1f7a3d;
  border-left: 4px solid var(--zoo-green);
  line-height: 1.3;
}
.zoo-gnav ul { list-style: none; margin: 0; padding: 0; }
.zoo-gnav__group li + li { border-top: 1px solid var(--rule); }
.zoo-gnav__group a {
  display: block;
  padding: 11px 12px;
  color: var(--ink);
  font-size: 14.5px;
}
.zoo-gnav__group a:hover,
.zoo-gnav__group a:focus-visible { background: #eafaf0; color: #1f7a3d; text-decoration: none; }
.zoo-gnav__group a[aria-current="page"] {
  background: var(--zoo-green);
  color: #fff;
  font-weight: 700;
  border-radius: 6px;
}
.zoo-gnav__links {
  margin-top: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
}
.zoo-gnav__links li + li { margin-top: 2px; }
.zoo-gnav__links a {
  display: block;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--ink-soft);
}
.zoo-gnav__links a:hover,
.zoo-gnav__links a:focus-visible { color: var(--link-hover); }

/* ---------- バナー（くらべてみる画像） ---------- */
.banner { background: #fff; border-bottom: 1px solid var(--rule); }
.banner__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 6px 16px;
}
.banner__inner img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 760px;
  margin: 0 auto;
}

/* ---------- 本体レイアウト ---------- */
.layout {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 18px 16px 28px;
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

/* ---------- サイドメニュー ---------- */
.sidebar {
  position: sticky;
  top: 12px;
}
.sidebar__heading {
  margin: 0 0 8px;
  padding: 6px 12px;
  background: var(--zoo-cyan);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  border-radius: 6px 6px 0 0;
  letter-spacing: .04em;
}
.nav-list { display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: block;
  padding: 9px 12px;
  background: #fff;
  border: 1px solid var(--rule);
  border-left: 4px solid transparent;
  border-radius: 5px;
  color: var(--link);
  font-size: 14px;
  line-height: 1.4;
  transition: background .12s, border-color .12s, color .12s;
}
a.nav-item:hover, a.nav-item:focus-visible {
  background: var(--zoo-green);
  border-left-color: #009a4d;
  color: #fff;
  text-decoration: none;
}
.nav-item.current {
  background: var(--zoo-green);
  border-color: #009a4d;
  border-left-color: #006f37;
  color: #fff;
  font-weight: 700;
  cursor: default;
}

/* ---------- メイン ---------- */
.main { min-width: 0; }
.main__head { margin-bottom: 14px; }
.main__head .lead {
  margin: 0 0 12px;
  color: #2e7d32;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
}
.main__head .topbar { display: block; max-width: 100%; height: auto; }

/* ---------- 説明パネル ---------- */
.panel {
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 14px 16px 18px;
  margin: 0 0 16px;
}
.panel.cream { background: var(--panel-cream); border-color: var(--panel-cream-bd); }
.panel.sage  { background: var(--panel-sage);  border-color: var(--panel-sage-bd); }

.panel-title {
  margin: 0 0 12px;
  padding: 0 0 8px 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  border-bottom: 2px solid rgba(0,0,0,.12);
  display: flex;
  align-items: center;
  gap: 8px;
}
.panel-title::before {
  content: "";
  flex: 0 0 auto;
  width: 12px; height: 12px;
  border-radius: 2px;
  background: var(--accent-orange);
  transform: rotate(45deg);
}

/* ---------- カードグリッド ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 12px 10px;
}
.card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--card-bg);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 8px 6px 9px;
  color: var(--link);
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s;
}
.card:hover, .card:focus-visible {
  text-decoration: none;
  transform: translateY(-3px);
  box-shadow: 0 6px 14px rgba(0,0,0,.14);
  border-color: var(--zoo-green);
}
.card-thumb {
  display: block;
  width: 100%;
  aspect-ratio: 70 / 55;
  border-radius: 5px;
  overflow: hidden;
  background: #eee;
}
.card-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.card-label {
  margin-top: 7px;
  font-size: 12.5px;
  line-height: 1.35;
  color: var(--ink);
  word-break: break-word;
}
.card:hover .card-label, .card:focus-visible .card-label { color: var(--link-hover); }

/* ---------- フッター ---------- */
.credit {
  border-top: 1px solid var(--rule);
  background: #fff;
}
.credit p {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 14px 16px;
  font-size: 11px;
  color: var(--ink-soft);
  text-align: center;
}

/* ============================================================
   レスポンシブ
   ============================================================ */

/* タブレット〜：サイドメニューを上部の横並びへ */
@media (max-width: 820px) {
  .layout {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .sidebar { position: static; }
  .sidebar__heading { border-radius: 6px; }
  .nav-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px;
  }
  .nav-item {
    flex: 1 1 auto;
    text-align: center;
    border-left: 1px solid var(--rule);
  }
  a.nav-item:hover, a.nav-item:focus-visible,
  .nav-item.current { border-left-color: transparent; }
}

/* スマートフォン */
@media (max-width: 560px) {
  body { font-size: 14px; }
  .zoo-header__inner { padding: 9px 12px; }
  .zoo-header__logo img { height: 34px; }
  .banner__inner, .layout, .credit p { padding-left: 12px; padding-right: 12px; }
  .layout { padding-top: 14px; }
  .nav-item { flex-basis: calc(50% - 3px); font-size: 13px; padding: 8px 6px; }
  .main__head .lead { font-size: 13.5px; }
  .panel { padding: 12px 12px 15px; border-radius: 8px; }
  .panel-title { font-size: 15px; }
  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(84px, 1fr));
    gap: 10px 8px;
  }
  .card-label { font-size: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}