/* san_gaku_kan_sub.css - 産学官ショーケース実例 */
/* ベース: originalcase_sub.css 準拠（ネイビー系） */

/* san_gaku_kan_sub.css */

/* ====== リセット ====== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ====== ベース ====== */
html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, 'MS PGothic', sans-serif;
  font-size: 14px;
  line-height: 1.8;
  color: #e8e8e8;
  background-color: #040812;
  min-width: 320px;
  -webkit-text-size-adjust: 100%;
}

/* ====== タイル背景（並び順：1→4→2→5→3→6→10→7→9→8） ====== */
#tile-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 2px;
  pointer-events: none;
  background: #040812;
}
@media screen and (max-width: 768px) {
  #tile-bg {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(5, 1fr);
  }
}
#tile-bg .tile-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center center;
  filter: brightness(0.60) saturate(0.78);
  background: #040812;
}

/* ====== ネイビー系オーバーレイ ====== */
#tile-overlay {
  position: fixed;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, rgba(4,8,30,.66) 0%, rgba(2,5,20,.58) 100%);
  pointer-events: none;
}

/* ====== ガラス反射・斜め線オーバーレイ ====== */
#glass-lines {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}
#glass-lines svg { width: 100%; height: 100%; }

/* ====== リンク ====== */
a { color: #c8e6ff; text-decoration: none; }
a:hover { color: #ffffff; text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; border: none; }

/* ====== ページ外枠 ====== */
.page-wrapper {
  position: relative;
  z-index: 3;
  max-width: 760px;
  margin: 0 auto;
  padding: 10px 15px 120px;
}

/* ====== サイトヘッダー（H1） ====== */
.site-header {
  text-align: center;
  padding: 10px 0 6px;
}
.site-header h1 {
  font-size: clamp(11px, 2.2vw, 14px);
  font-weight: normal;
  color: #cccccc;
  line-height: 1.6;
}
.site-header h1 a { color: #ffffff; }
.header-hr {
  border: none;
  border-top: 2px solid #445566;
  margin: 8px 0;
}

/* ====== ページタイトルエリア ====== */
.page-title-area {
  background: rgba(10, 20, 50, 0.70);
  border: 1px solid #334466;
  border-radius: 4px;
  padding: 10px 14px;
  margin: 10px 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.page-title-area h2 {
  color: #e3f0ff;
  font-size: clamp(13px, 2.8vw, 16px);
  line-height: 1.5;
}
.page-title-area h2 span {
  font-size: 12px;
  color: #8899aa;
  font-weight: normal;
  margin-left: 6px;
}
.nav-back-link {
  color: #c8e6ff;
  font-size: 12px;
  white-space: nowrap;
}
.nav-back-link:hover { color: #ffffff; }

/* ====== ナビゲーション（前後ページ・親ページへ） ====== */
.page-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 10px 0;
}
.page-nav a {
  display: inline-block;
  padding: 5px 12px;
  font-size: 12px;
  color: #ffff99;
  border: 1px solid rgba(200, 180, 50, 0.40);
  border-radius: 3px;
  background: rgba(40, 30, 0, 0.45);
  transition: background 0.15s;
}
.page-nav a:hover {
  background: rgba(80, 60, 0, 0.70);
  color: #ffffff;
  text-decoration: none;
}

/* ====== 区切り線 ====== */
.section-hr {
  border: none;
  border-top: 2px solid #334466;
  margin: 14px 0;
}

/* ====== ショーケース番号バッジ ====== */
.sc-badge {
  background: rgba(10, 20, 60, 0.85);
  border: 1px solid #336699;
  border-radius: 4px;
  padding: 8px 14px;
  margin: 10px 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}
.sc-badge .sc-no {
  color: #88bbff;
  font-size: clamp(12px, 2.5vw, 15px);
  font-weight: bold;
}
.sc-badge .sc-title {
  color: #e3f0ff;
  font-size: clamp(13px, 2.8vw, 16px);
  font-weight: bold;
  line-height: 1.5;
}

/* ====== メイン画像エリア ====== */
.main-photo {
  text-align: center;
  background: rgba(5, 10, 30, 0.75);
  border: 1px solid #334466;
  border-radius: 4px;
  padding: 16px 10px;
  margin: 12px 0;
}
.main-photo img {
  margin: 0 auto 20px;
  max-width: 100%;
  max-height: 500px;
  width: auto;
  height: auto;
  object-fit: contain;
}
.main-photo img:last-child {
  margin-bottom: 0;
}
.main-photo .photo-caption {
  color: #c8e6ff;
  font-size: 13px;
  margin-top: 10px;
  line-height: 1.7;
}
.main-photo .photo-caption strong { color: #ffffff; }

/* ====== 仕様・説明リスト ====== */
.spec-block {
  background: rgba(5, 10, 30, 0.70);
  border: 1px solid #334466;
  border-radius: 4px;
  padding: 14px 16px;
  margin: 12px 0;
}
.spec-block ul {
  list-style: none;
  padding: 0;
}
.spec-block ul li {
  color: #e0e8f8;
  font-size: clamp(13px, 2.3vw, 14px);
  line-height: 1.9;
  padding: 4px 0 4px 1.2em;
  position: relative;
  border-bottom: 1px solid rgba(51, 68, 102, 0.40);
}
.spec-block ul li:last-child { border-bottom: none; }
.spec-block ul li::before {
  content: '・';
  position: absolute;
  left: 0;
  color: #88bbff;
}
.spec-block ul li a { color: #ffff99; }
.spec-block ul li a:hover { color: #ffffff; }

/* ====== サムネイルグリッド（カスタマイズ実例等） ====== */
.sub-section-heading {
  color: #e3f0ff;
  font-size: clamp(13px, 2.5vw, 15px);
  font-weight: bold;
  padding: 8px 12px;
  background: rgba(10, 20, 60, 0.60);
  border-left: 3px solid #4488cc;
  margin: 16px 0 10px;
}
.thumb-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 10px 0;
}
@media (max-width: 480px) {
  .thumb-grid { grid-template-columns: repeat(2, 1fr); }
}
.thumb-item {
  background: rgba(5, 10, 30, 0.70);
  border: 1px solid #334466;
  border-radius: 3px;
  overflow: hidden;
  text-align: center;
}
.thumb-item img {
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 180px;
  display: block;
  margin: 0 auto;
  background: #0a1020;
  transition: opacity 0.2s;
}
.thumb-item img:hover { opacity: 0.85; }
.thumb-item .thumb-caption {
  font-size: 11px;
  color: #c8e6c9;
  padding: 5px 6px;
  line-height: 1.5;
}

/* ====== 大判サムネイル（2列） ====== */
.thumb-grid-2col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 10px 0;
}
@media (max-width: 400px) {
  .thumb-grid-2col { grid-template-columns: 1fr; }
}
.thumb-grid-2col 

/* ====== 特定商取引リンク ====== */
.tokushou-row {
  font-size: 12px;
  color: #8899aa;
  margin: 10px 0;
}
.tokushou-row a { color: #8899cc; }
.tokushou-row a:hover { color: #ffffff; }

/* ====== フッター ====== */
footer {
  text-align: center;
  color: #778899;
  font-size: 12px;
  padding: 20px 0 30px;
  border-top: 1px solid #334466;
  margin-top: 20px;
  line-height: 1.8;
}
footer a { color: #c8dfff; }
footer a:hover { color: #ffffff; }

/* ====== 固定フローティングボタン（左下3つ＋右下トップ） ====== */
.float-btns {
  position: fixed;
  bottom: 20px;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-left: 12px;
  gap: 8px;
  z-index: 1000;
  pointer-events: none;
}
.float-btns > * { pointer-events: auto; }

.btn-call {
  display: flex;
  align-items: center;
  gap: 7px;
  background: #c8251a;
  color: #fff;
  font-size: 0.82em;
  font-weight: bold;
  padding: 9px 14px;
  border-radius: 30px;
  text-decoration: none;
  box-shadow: 0 3px 10px rgba(0,0,0,0.6);
  white-space: nowrap;
  transition: background 0.2s;
}
.btn-call:hover { background: #e02d20; color: #fff; text-decoration: none; }
.btn-call .icon { font-size: 1.1em; }

.btn-inquiry {
  display: flex;
  align-items: center;
  gap: 7px;
  background: #1a5c1a;
  color: #fff;
  font-size: 0.82em;
  font-weight: bold;
  padding: 9px 14px;
  border-radius: 30px;
  text-decoration: none;
  box-shadow: 0 3px 10px rgba(0,0,0,0.6);
  white-space: nowrap;
  transition: background 0.2s;
  border: 1px solid #2d8b2d;
}
.btn-inquiry:hover { background: #236b23; color: #fff; text-decoration: none; }
.btn-inquiry .icon { font-size: 1.1em; }

.btn-access {
  display: flex;
  align-items: center;
  gap: 7px;
  background: #1a3a5c;
  color: #fff;
  font-size: 0.82em;
  font-weight: bold;
  padding: 9px 14px;
  border-radius: 30px;
  text-decoration: none;
  box-shadow: 0 3px 10px rgba(0,0,0,0.6);
  white-space: nowrap;
  transition: background 0.2s;
  border: 1px solid #2d6098;
}
.btn-access:hover { background: #234b7a; color: #fff; text-decoration: none; }
.btn-access .icon { font-size: 1.1em; }

.btn-totop {
  position: fixed;
  bottom: 20px;
  right: 12px;
  width: 46px;
  height: 46px;
  background: rgba(20, 40, 80, 0.85);
  border: 1px solid #336699;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.3em;
  text-decoration: none;
  box-shadow: 0 3px 10px rgba(0,0,0,0.5);
  z-index: 1000;
  transition: background 0.2s;
}
.btn-totop:hover { background: rgba(30, 60, 120, 0.95); color: #fff; text-decoration: none; }

/* ====== レスポンシブ ====== */
@media screen and (max-width: 600px) {
  .page-wrapper { padding: 8px 10px 120px; }
  .sc-badge { flex-direction: column; gap: 4px; }
  .float-btns { padding-left: 8px; gap: 6px; bottom: 16px; }
  .btn-call,
  .btn-inquiry,
  .btn-access { font-size: 0.75em; padding: 8px 11px; }
  .btn-totop { bottom: 16px; right: 8px; width: 42px; height: 42px; font-size: 1.1em; }
}
@media screen and (max-width: 400px) {
  .thumb-grid { grid-template-columns: repeat(2, 1fr); }
  
}

/* ====== 外部リンク付き画像（カメラ静止画等）====== */
.ext-img-links {
  text-align: center;
  margin: 12px 0;
}
.ext-img-item {
  display: inline-block;
  text-align: center;
  margin: 6px auto;
}
.ext-img-item img {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
}
.ext-img-label {
  color: #c8e6ff;
  font-size: 12px;
  margin-top: 6px;
  line-height: 1.5;
  text-align: center;
}