/* ===== 旅とホテルのお役立ちガイド ── 明るく爽やかな旅行系デザイン ===== */

:root {
  --bg: #f5f9fc;
  --panel: #ffffff;
  --text: #243447;
  --text-muted: #5d7186;
  --teal: #0ea5a5;
  --teal-dark: #0b8585;
  --sky: #2a9df4;
  --coral: #ff7a59;
  --sand: #ffb347;
  --border: #e2ecf3;
  --shadow: 0 8px 24px rgba(36, 52, 71, 0.08);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  background-image: radial-gradient(1100px 480px at 100% -5%, rgba(42, 157, 244, 0.12), transparent 60%),
    radial-gradient(900px 420px at -5% 0%, rgba(14, 165, 165, 0.12), transparent 55%);
  background-attachment: fixed;
  font-family: "Inter", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo",
    system-ui, sans-serif;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--teal-dark);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.container {
  max-width: 820px;
  margin: 0 auto;
  padding: 28px 20px 72px;
}

/* 見出しに丸ゴシックで親しみやすさ */
.site-header h1,
.hero-title,
.tip-heading,
.promo-title {
  font-family: "Zen Maru Gothic", "Inter", sans-serif;
}

/* ===== トップページ ヘッダー ===== */
.site-header {
  text-align: center;
  padding: 64px 20px 36px;
  background: linear-gradient(135deg, var(--teal), var(--sky));
  color: #fff;
}
.site-header h1 {
  margin: 0 0 10px;
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.site-header p {
  margin: 0;
  opacity: 0.95;
}

/* ===== 記事一覧 ===== */
.post-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}
.post-list li {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 18px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.post-list li:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(36, 52, 71, 0.14);
}
/* サムネ小・横並びのコンパクトな行（スマホで省スペース） */
.post-list a {
  display: flex;
  align-items: stretch;
  color: var(--text);
  text-decoration: none;
}
.post-list a:hover {
  text-decoration: none;
}
.post-thumb {
  flex: 0 0 110px;
  width: 110px;
  align-self: stretch;
  object-fit: cover;
}
.post-card-body {
  flex: 1 1 auto;
  min-width: 0;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.post-card-date {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--teal), var(--sky));
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 6px;
}
.post-card-title {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text);
}
.post-list li:hover .post-card-title {
  color: var(--teal-dark);
}

/* ===== 記事ページ ヒーロー ===== */
.hero {
  position: relative;
}
.hero-image {
  width: 100%;
  height: auto;
  display: block;
  max-height: 460px;
  object-fit: cover;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 30px 24px;
  background: linear-gradient(
    to top,
    rgba(15, 32, 48, 0.85) 0%,
    rgba(15, 32, 48, 0.35) 45%,
    rgba(15, 32, 48, 0) 100%
  );
  color: #fff;
}
.hero-title {
  margin: 0 auto 8px;
  width: 100%;
  max-width: 820px;
  font-size: 1.9rem;
  font-weight: 700;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}
.hero-date {
  margin: 0 auto;
  width: 100%;
  max-width: 820px;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  opacity: 0.95;
}

/* ===== 戻るリンク ===== */
.back-link {
  display: inline-block;
  margin: 4px 0 24px;
  padding: 8px 16px;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--panel);
  transition: color 0.18s ease, border-color 0.18s ease;
}
.back-link:hover {
  color: var(--teal-dark);
  border-color: var(--teal);
  text-decoration: none;
}

/* ===== ブログ本文（枠なし・全幅） ===== */
.post {
  padding: 4px 0 0;
}
.post-lead {
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 24px;
  padding-bottom: 20px;
  border-bottom: 1px dashed var(--border);
}
.post-section {
  margin: 0 0 24px;
}
.section-heading {
  margin: 0 0 12px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--teal-dark);
  padding-left: 14px;
  border-left: 5px solid var(--teal);
  line-height: 1.5;
}
.post-section p {
  margin: 0 0 14px;
}

/* ===== まとめ（枠なし・上区切り線） ===== */
.summary {
  margin: 28px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--border);
}
.summary::before {
  content: "まとめ";
  display: inline-block;
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  color: #fff;
  background: var(--coral);
  padding: 2px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.summary p {
  margin: 0;
}

/* ===== フッター ===== */
.site-footer {
  text-align: center;
  padding: 30px 20px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* ===== 自社アプリ シンプルバナー（画像＋ストアバッジのみ） ===== */
.promo-simple {
  position: relative;
  display: block;
  margin: 4px 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.promo-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 2;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  padding: 3px 9px;
  border-radius: 4px;
}
.promo-image {
  display: block;
  width: 100%;
  height: auto;
}
.store-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: center;
  padding: 14px;
}
.store-btn {
  display: inline-flex;
  text-decoration: none;
  border-radius: 8px;
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}
.store-btn:hover {
  transform: translateY(-2px);
  text-decoration: none;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}
.store-badge {
  display: block;
  height: 52px;
  width: auto;
}

/* ===== レスポンシブ ===== */
@media (max-width: 600px) {
  .site-header h1 {
    font-size: 1.7rem;
  }
  .hero-title {
    font-size: 1.4rem;
  }
  .hero-image {
    max-height: 280px;
  }
  /* スマホでは余白を詰めて本文の横幅を広く使う */
  .container {
    padding-left: 14px;
    padding-right: 14px;
  }
}