/* =====================================================================
   第1回ねこのフォーラム ページ専用スタイル（.f1- プレフィックス）
   マスターサイト（過去のフォーラム第2回）のレイアウトを完全模倣
   ===================================================================== */

:root {
  --f1-brown:        #6e401e;   /* メイン茶 */
  --f1-brown-soft:   #a7693c;   /* 補助茶 */
  --f1-paper:        #f9f1e3;   /* ベージュ背景 */
  --f1-paper-deep:   #f3e6d2;
  --f1-card:         #ffffff;
  --f1-text:         #1a1a19;
  --f1-text-soft:    #3b342c;
  --f1-text-mute:    #7d7468;
  --f1-line:         #ddd4bd;
  --f1-line-soft:    #ece4d2;
}

/* ---------- Reset / Base ---------- */
.f1-page, .f1-page *, .f1-page *::before, .f1-page *::after { box-sizing: border-box; }
.f1-page {
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--f1-text);
  line-height: 1.8;
  font-size: 16px;
  background: #fff;
  margin: 0;
}
.f1-page img { max-width: 100%; height: auto; display: block; }
.f1-page a { color: var(--f1-brown-soft); text-decoration: none; }
.f1-page a:hover { color: var(--f1-brown); text-decoration: underline; }
.f1-page h1, .f1-page h2, .f1-page h3, .f1-page h4 {
  font-family: "Zen Maru Gothic", "Noto Sans JP", sans-serif;
  letter-spacing: 0.04em;
  color: var(--f1-text);
}

/* =====================================================================
   1. ヘッダー（ロゴ＋ナビ）
   ===================================================================== */
.f1-header {
  background: #fff;
  padding: 18px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--f1-line-soft);
}
.f1-logo {
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--f1-brown);
  letter-spacing: 0.06em;
}
.f1-logo small {
  display: block;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--f1-brown-soft);
  font-weight: 500;
  margin-top: 2px;
}
.f1-nav {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 14px;
}
.f1-nav a { color: var(--f1-text); font-weight: 500; }
.f1-nav a:hover { color: var(--f1-brown); text-decoration: none; }

/* =====================================================================
   2. ヒーローバー（茶色帯）
   ===================================================================== */
.f1-hero {
  position: relative;
  background:
    radial-gradient(circle at 92% 78%, rgba(255,255,255,0.06) 0 6px, transparent 7px) 0 0/60px 60px,
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.05) 0 5px, transparent 6px) 30px 30px/80px 80px,
    var(--f1-brown);
  color: #fff;
  padding: 90px 40px 70px;
  text-align: center;
  overflow: hidden;
}
.f1-hero__title {
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 56px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.12em;
  margin: 0;
  line-height: 1.3;
}
.f1-hero__sub {
  margin-top: 14px;
  font-size: 16px;
  letter-spacing: 0.18em;
  color: rgba(255,255,255,0.85);
  font-family: "Zen Maru Gothic", sans-serif;
}
.f1-breadcrumb {
  position: absolute;
  left: 40px;
  bottom: 18px;
  font-size: 13px;
  color: rgba(255,255,255,0.85);
}
.f1-breadcrumb a { color: rgba(255,255,255,0.85); }
.f1-breadcrumb a:hover { color: #fff; }
.f1-breadcrumb .sep { margin: 0 8px; opacity: 0.6; }
.f1-paw {
  position: absolute;
  right: 40px;
  bottom: 24px;
  opacity: 0.18;
  pointer-events: none;
}

/* =====================================================================
   3. アイキャッチ
   ===================================================================== */
.f1-eyecatch-wrap {
  background: var(--f1-paper);
  padding: 70px 24px 40px;
  position: relative;
  overflow: hidden;
}
.f1-eyecatch-wrap::before,
.f1-eyecatch-wrap::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 240px;
  height: 240px;
  background: rgba(110,64,30,0.05);
  border-radius: 60% 40% 65% 35% / 50% 60% 40% 50%;
  transform: translateY(-50%);
  pointer-events: none;
}
.f1-eyecatch-wrap::before { left: -100px; }
.f1-eyecatch-wrap::after  { right: -100px; transform: translateY(-50%) scaleX(-1); }
.f1-eyecatch {
  max-width: 1100px;
  margin: 0 auto;
  background: #fff;
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 12px 36px rgba(110,64,30,0.12);
  position: relative;
}
.f1-eyecatch img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  object-fit: cover;
  max-height: 540px;
}

/* =====================================================================
   4. 開催概要テーブル
   ===================================================================== */
.f1-summary-wrap {
  background: var(--f1-paper);
  padding: 30px 24px 80px;
}
.f1-summary {
  max-width: 1100px;
  margin: 0 auto;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 8px 28px rgba(110,64,30,0.08);
  overflow: hidden;
}
.f1-summary table {
  width: 100%;
  border-collapse: collapse;
}
.f1-summary th,
.f1-summary td {
  padding: 22px 28px;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid var(--f1-line-soft);
  font-size: 15px;
  line-height: 1.7;
}
.f1-summary tr:last-child th,
.f1-summary tr:last-child td { border-bottom: none; }
.f1-summary th {
  background: var(--f1-brown);
  color: #fff;
  font-family: "Zen Maru Gothic", sans-serif;
  font-weight: 700;
  letter-spacing: 0.08em;
  width: 220px;
  font-size: 15px;
}
.f1-summary td { color: var(--f1-text-soft); }
.f1-summary td strong { color: var(--f1-brown); font-weight: 700; }

/* =====================================================================
   5. PROGRAM セクションヘッダー
   ===================================================================== */
.f1-section {
  background: var(--f1-paper);
  padding: 70px 24px 80px;
}
.f1-section--white { background: #fff; }
.f1-section__head {
  text-align: center;
  margin-bottom: 50px;
}
.f1-section__icon {
  font-size: 28px;
  line-height: 1;
  margin-bottom: 8px;
}
.f1-section__furigana {
  display: block;
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 14px;
  letter-spacing: 0.3em;
  color: var(--f1-brown-soft);
  margin-bottom: 6px;
}
.f1-section__en {
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 38px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--f1-brown);
  margin: 0;
  line-height: 1.2;
}
.f1-section__line {
  width: 60px;
  height: 3px;
  background: var(--f1-brown);
  margin: 18px auto 0;
  border-radius: 2px;
}

/* =====================================================================
   6. セッションカード（画像なしレイアウト）
   ===================================================================== */
.f1-sessions {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 36px;
}
.f1-session {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 8px 26px rgba(110,64,30,0.08);
  overflow: hidden;
}
.f1-session__num {
  background: var(--f1-brown);
  color: #fff;
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 16px;
  letter-spacing: 0.18em;
  font-weight: 700;
  padding: 12px 28px;
}
.f1-session__body {
  padding: 30px 36px 36px;
}
.f1-session__title {
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--f1-text);
  padding-left: 14px;
  border-left: 5px solid var(--f1-brown);
  margin: 0 0 8px;
  line-height: 1.5;
}
.f1-session__sub {
  color: var(--f1-text-mute);
  font-size: 14px;
  margin: 0 0 28px;
  padding-left: 19px;
}
.f1-session__h {
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--f1-brown);
  margin: 24px 0 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.f1-session__h:first-child { margin-top: 0; }

/* 画像なしレイアウト：プロフィール枠を上、ハイライトを下に縦配置 */
.f1-session__content {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 28px;
  align-items: start;
}
.f1-session__col {
  min-width: 0;
}
.f1-profile {
  background: var(--f1-paper);
  border-radius: 10px;
  padding: 18px 22px;
  margin: 0;
}
.f1-profile__name {
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--f1-text);
  margin: 0 0 4px;
}
.f1-profile__org {
  font-size: 13px;
  color: var(--f1-text-mute);
  margin: 0;
  line-height: 1.6;
}
.f1-highlights {
  list-style: none;
  padding: 0;
  margin: 0;
}
.f1-highlights li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--f1-text-soft);
}
.f1-highlights li::before {
  content: "";
  position: absolute;
  left: 4px; top: 12px;
  width: 8px; height: 8px;
  background: var(--f1-brown);
  border-radius: 50%;
}

/* =====================================================================
   7. PHOTO GALLERY セクション
   ===================================================================== */
.f1-gallery {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.f1-gallery figure {
  margin: 0;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(110,64,30,0.08);
}
.f1-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.f1-gallery figcaption {
  padding: 12px 14px;
  font-size: 13px;
  color: var(--f1-text-soft);
  line-height: 1.6;
}
.f1-gallery--wide { grid-template-columns: repeat(2, 1fr); }
.f1-gallery--2x2 { grid-template-columns: repeat(2, 1fr); }

/* =====================================================================
   8. その他のフォーラム カード
   ===================================================================== */
.f1-other {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.f1-other__card {
  display: block;
  background: #fff;
  border: 2px solid var(--f1-line);
  border-radius: 14px;
  padding: 28px 26px;
  color: var(--f1-text) !important;
  transition: all 0.25s ease;
}
.f1-other__card:hover {
  border-color: var(--f1-brown);
  box-shadow: 0 10px 28px rgba(110,64,30,0.14);
  transform: translateY(-3px);
  text-decoration: none !important;
}
.f1-other__label {
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--f1-brown);
  font-weight: 700;
  margin-bottom: 10px;
}
.f1-other__title {
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--f1-brown);
  margin: 0 0 8px;
  line-height: 1.5;
}
.f1-other__desc {
  font-size: 13.5px;
  color: var(--f1-text-soft);
  margin: 0 0 12px;
  line-height: 1.7;
}
.f1-other__more {
  font-size: 13px;
  color: var(--f1-brown-soft);
  font-weight: 700;
}

/* =====================================================================
   9. 関連サイト
   ===================================================================== */
.f1-related-wrap { background: var(--f1-paper); padding: 60px 24px 70px; }
.f1-related {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}
.f1-related a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 28px;
  background: #fff;
  border-radius: 12px;
  color: var(--f1-text) !important;
  font-family: "Zen Maru Gothic", sans-serif;
  font-weight: 500;
  box-shadow: 0 4px 14px rgba(110,64,30,0.06);
  transition: all 0.2s;
}
.f1-related a:hover {
  background: var(--f1-brown);
  color: #fff !important;
  text-decoration: none !important;
}
.f1-related a:hover .f1-related__arr { color: #fff; }
.f1-related__arr { color: var(--f1-brown); font-weight: 700; }

/* =====================================================================
   フッター
   ===================================================================== */
.f1-footer {
  background: var(--f1-brown);
  color: rgba(255,255,255,0.85);
  padding: 40px 24px;
  text-align: center;
  font-size: 13px;
  letter-spacing: 0.06em;
}
.f1-footer small { display: block; margin-top: 6px; opacity: 0.7; }

/* =====================================================================
   レスポンシブ
   ===================================================================== */
@media (max-width: 880px) {
  .f1-header { flex-direction: column; gap: 14px; padding: 16px 20px; }
  .f1-nav { gap: 16px; font-size: 13px; justify-content: center; }
  .f1-hero { padding: 60px 20px 70px; }
  .f1-hero__title { font-size: 36px; letter-spacing: 0.08em; }
  .f1-breadcrumb { left: 20px; right: 20px; bottom: 14px; font-size: 12px; }
  .f1-paw { display: none; }
  .f1-eyecatch-wrap { padding: 40px 16px 24px; }
  .f1-summary-wrap { padding: 20px 16px 50px; }
  .f1-summary th, .f1-summary td { padding: 16px 18px; font-size: 14px; }
  .f1-summary th { width: 110px; }
  .f1-section { padding: 50px 16px 60px; }
  .f1-section__en { font-size: 28px; }
  .f1-session__body { padding: 24px 22px 28px; }
  .f1-session__content { grid-template-columns: 1fr; gap: 18px; }
  .f1-session__title { font-size: 18px; }
  .f1-gallery, .f1-gallery--wide { grid-template-columns: 1fr 1fr; gap: 12px; }
  .f1-other { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .f1-hero__title { font-size: 28px; }
  .f1-summary table, .f1-summary tbody, .f1-summary tr, .f1-summary th, .f1-summary td { display: block; width: 100%; }
  .f1-summary th { padding: 10px 18px; }
  .f1-summary td { padding: 14px 18px 18px; }
  .f1-gallery, .f1-gallery--wide { grid-template-columns: 1fr; }
}