.brand img.logo {
  height: 38px; 
  width: auto;
  display: block;
}
.brand a {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.seo-hidden{
  position:absolute;
  left:-9999px;
  width:1px;
  height:1px;
  overflow:hidden;
}

    /* ===== ベースデザイン ===== */
    :root {
      --bg: linear-gradient(180deg,#f5f5f7 0%,#eaeaf0 100%);
      --card: #fff;
      --accent: #4263eb;
      --radius: 20px;
      --shadow: 0 6px 18px rgba(0,0,0,0.05);
      --muted: #555;
      font-family: "Noto Sans JP", "Segoe UI", Roboto, sans-serif;
    }

    body{
      margin:0;
      min-height:100%;
      background:var(--bg);
      color:#222;
      line-height:1.6;
    }

    /* ===== ヘッダー ===== */
    header{
      background:rgba(255,255,255,0.9);
      backdrop-filter:blur(6px);
      border-bottom:1px solid #e0e0e5;
      position:sticky;top:0;z-index:40;
    }
    .topbar{
      max-width:1200px;
      margin:0 auto;
      display:flex;
      justify-content:space-between;
      align-items:center;
      padding:12px 18px;
    }
    .brand{
      font-size:22px;
      font-weight:700;
      letter-spacing:0.6px;
    }
    nav ul{
      list-style:none;margin:0;padding:0;
      display:flex;gap:16px;
    }
    nav a{
      color:#333;text-decoration:none;
      font-size:15px;
      padding:6px 10px;
      border-radius:8px;
    }
    nav a:hover{color:var(--accent);background:#f0f3ff;}
    .menu-toggle{display:none;color: white;
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: 6px;
  padding: 4px 8px;
}

    /* ===== メイン ===== */

    
.searchbox {
  display: flex;
  align-items: center;
  gap: 0; 
  width: 100%;
  max-width: 480px; 
  margin-top: 12px;
   box-sizing: border-box;
  overflow: hidden; 
   line-height: 48px;  
}

.searchbox input {
  flex: 1;
  padding: 14px 16px;
  font-size: 16px;
  border: 1.5px solid #ccc;
  border-radius: 8px 0 0 8px;
  outline: none;
  background: #fff;
  box-sizing: border-box;
  padding: 14px 16px;

  min-width: 0;  


  
}

.searchbox input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(66,99,235,0.2);
}

#btn-search {
  background: var(--accent);
  color: #fff;
  border: none;
  font-size: 16px;
  border-radius: 0 8px 8px 0;
  cursor: pointer;
  transition: background 0.3s;
  box-shadow: 0 4px 10px rgba(66,99,235,0.2);
  line-height: 1;       
  box-sizing: border-box; 
   flex-shrink: 0;
    line-height: 48px;  
  padding: 0 20px;     

   min-width: 75px;  
    padding: 0;       
    text-align: center;

}

#btn-search:hover {
  background: #2f54d6; 
}
    .main-bg {
  position: absolute;
  top: 70px;
  left: 0;
  width: 100%;
  height: 400px; 
  background: url("../../ロゴ/lake01.png") center/cover no-repeat;
  opacity: 1; 
  z-index: -1;

}
    .container{max-width:1200px;margin:28px auto;padding:0 18px;}
   
    .sp-break {
  display: inline;
}

    .hero{
      background:var(--card);
      padding:28px;
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:20px;
    }
    .hero-info h1{
      margin:0 0 8px;font-size:26px;
    }
    .hero-info p{margin:0;color:var(--muted);}

    .hero-media{
      width:300px;height:160px;
      border-radius:var(--radius);
      background:linear-gradient(135deg,#eef1ff,#ffffff);
    }

    /* ===== グリッド ===== */
    .grid{
      display:grid;
      grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
      gap:18px;
      margin-top:20px;
    }
    .card{
      background:var(--card);
      border-radius:var(--radius);
      overflow:hidden;
      box-shadow:var(--shadow);
      text-decoration:none;
      color:inherit;
      transition:transform .25s ease, box-shadow .25s ease;
    }
    .card:hover{
      transform:translateY(-4px);
      box-shadow:0 10px 22px rgba(0,0,0,0.08);
    }

    .thumb{
      position:relative;
      height:160px;
      background:#ddd;
      overflow:hidden;
    }
    .thumb img{
      width:100%;height:100%;object-fit:cover;
      display:block;
      transition:transform .4s ease;
    }
    .card:hover img{transform:scale(1.05);}
    .overlay{
      position:absolute;inset:0;
      background:rgba(0,0,0,0.45);
      color:#fff;
      display:flex;
      align-items:center;
      justify-content:center;
      opacity:0;
      transition:.3s;
      font-size:17px;
      letter-spacing:1px;
    }
    .card:hover .overlay{opacity:1;}

    .card h3{
      margin:10px 12px 6px;
      font-size:15px;
    }

    /* ===== フッター ===== */
    footer{
      border-top:1px solid #e5e5ec;
      padding:30px 18px;
      margin-top:40px;
      background:rgba(255,255,255,0.8);
      backdrop-filter:blur(6px);
      text-align:center;
      color:#666;
      font-size:13px;
    }
    footer nav{
      margin-bottom:8px;
    }
    footer a{
      color:var(--accent);
      margin:0 8px;
      text-decoration:none;
    }
    footer a:hover{text-decoration:underline;}

    /* ===== トップボタン ===== */
    #backToTop{
      position:fixed;
      bottom:20px;right:20px;
      background:var(--accent);color:#fff;
      border:none;border-radius:50%;
      width:46px;height:46px;
      cursor:pointer;font-size:20px;
      display:none;
      align-items:center;justify-content:center;
      box-shadow:0 4px 12px rgba(0,0,0,0.2);
      z-index:50;
    }
    #backToTop:hover{background:#2f54d6;}

    /* ===== スマホ対応 ===== */
    @media (max-width:980px){
  .hero-text {
    padding: 20px 10px; 
    height: auto; 
  }

  .hero-text h1 {
    font-size: 19px;
    line-height: 1.3;
    white-space: unset;
  }

  .hero-text p {
    font-size: 14px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-box-orient: vertical;
  }

 .hero {
    height: auto;
    min-height: 200px;
    padding: 28px 24px;
  }

  .hero-text {
    padding: 20px 10px 8px;
  }

  .searchbox {
    margin-top: 10px;
  }

   .sp-break {
    display: block;
  }
  .hero-info {
    width: 100%;
  }

  .searchbox {
    width: 100%;
    max-width: 100%;  
  }
   #btn-search {
    min-width: 80px;   
    padding: 0 10px;
    white-space: nowrap;
  }
   body.lang-en .hero-text h1 {
    font-size: 16px;  
  }
    body.lang-en .hero-text p {
    font-size: 13px;  
    line-height: 1.4;
}
body.lang-ja .hero-text p {
    font-size: 13px;  
    line-height: 1.4;
}

    }
    /* ===== ダークモード ===== */
    @media (prefers-color-scheme: dark){
      :root{--bg:#18181b;--card:#1f1f23;--muted:#aaa;--accent:#5b8bff;}
      body{color:#f5f5f7;}
      header,footer{background:#1f1f23;border-color:#333;}
      nav a{color:#eee;}
  .card:hover {
    box-shadow: 0 10px 25px rgba(0,0,0,0.25);
  }
    }
    @media (max-width: 980px) {
  .grid {
    grid-template-columns: repeat(3, 1fr); 
    gap: 10px;
  }

.menu-toggle {
  display: block; 
  font-size: 28px;
  background: none;
  border: none;
  color: rgb(123,123,123);
  cursor: pointer;
  position: absolute;
  top: -23px;
  right: -10px;
}



nav ul {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 60px;
  right: 10px;
  background: rgba(255,255,255,0.95);
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
  padding: 12px;
  width: 180px;
  backdrop-filter: blur(8px);
}

nav ul.show {
  display: flex;
}

nav ul li a {
  padding: 10px;
  color: #333;
}

nav ul li a:hover {
  background: #f0f3ff;
  color: var(--accent);
}
    
    

nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 20px;
}


nav ul.menu {
  display: flex;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}
  
  }

  
/* ===== Added features only: original design is preserved ===== */
html{scroll-behavior:smooth}.theme-toggle{border:1px solid rgba(120,130,160,.25);background:rgba(255,255,255,.72);color:inherit;border-radius:999px;padding:6px 10px;cursor:pointer}.theme-toggle:hover{opacity:.9}.lang-links{display:inline-flex;gap:6px;flex-wrap:wrap;align-items:center;margin-left:8px}.lang-links a{font-size:13px;padding:5px 8px;border-radius:999px;border:1px solid rgba(120,130,160,.22);text-decoration:none;color:var(--accent,#4263eb);background:rgba(255,255,255,.55)}
body.dark-mode{--bg:#18181b;--card:#1f1f23;--muted:#aaa;--accent:#5b8bff;color:#f5f5f7;background:#18181b}body.dark-mode header,body.dark-mode footer{background:#1f1f23!important;border-color:#333!important}body.dark-mode nav a{color:#eee}body.dark-mode .card,body.dark-mode .card-box,body.dark-mode .hero,body.dark-mode .contact-box,body.dark-mode #seo-intro{background:#1f1f23;color:#f5f5f7}body.dark-mode .download-btn{background:var(--accent,#5b8bff)}body.dark-mode .hero-info p,body.dark-mode .card-box p,body.dark-mode .card-box ul{color:#aaa}
.toc-toggle{position:fixed;left:14px;top:50%;transform:translateY(-50%);z-index:90;border:none;background:var(--accent,#4263eb);color:#fff;border-radius:999px;padding:12px 14px;box-shadow:0 10px 24px rgba(0,0,0,.22);cursor:pointer;font-weight:700;writing-mode:vertical-rl;letter-spacing:.08em}.toc-drawer{position:fixed;left:0;top:0;bottom:0;width:min(330px,86vw);background:rgba(255,255,255,.98);box-shadow:12px 0 34px rgba(0,0,0,.18);z-index:100;transform:translateX(-105%);transition:.25s ease;overflow:auto;padding:22px 18px;backdrop-filter:blur(10px)}.toc-drawer.show{transform:translateX(0)}.toc-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px}.toc-close{border:none;background:transparent;font-size:26px;cursor:pointer;color:inherit}.toc-grid{display:grid;grid-template-columns:1fr;gap:8px}.toc-drawer a{display:block;text-decoration:none;color:#333;padding:9px 10px;border-radius:12px;border:1px solid #e3e8f7;background:rgba(255,255,255,.5);font-size:14px}.toc-drawer a:hover{color:var(--accent,#4263eb);background:#f0f3ff}body.dark-mode .toc-drawer{background:rgba(31,35,49,.98)}body.dark-mode .toc-drawer a{background:rgba(255,255,255,.05);border-color:#31384c;color:#eef3ff}
.site-index-panel,.ranking-panel{max-width:1200px;margin:30px auto 0;padding:22px;border-radius:var(--radius,20px);box-shadow:var(--shadow,0 6px 18px rgba(0,0,0,0.05));background:var(--card,#fff);border:1px solid #e3e8f7}.site-index-panel h2,.ranking-panel h2{font-size:20px;margin:0 0 14px;color:inherit}.site-link-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}.site-link-grid a,.rank-item{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;border-radius:14px;border:1px solid #e3e8f7;background:linear-gradient(135deg,rgba(255,255,255,.72),rgba(245,248,255,.62));text-decoration:none;color:inherit;font-size:14px}.site-link-grid a:hover{color:var(--accent,#4263eb);transform:translateY(-1px)}.ranking-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}.rank-no{font-weight:800;color:#ffb703}.rank-count{font-size:12px;color:var(--muted,#555)}body.dark-mode .site-index-panel,body.dark-mode .ranking-panel{background:#1f1f23;border-color:#31384c}body.dark-mode .site-link-grid a,body.dark-mode .rank-item{background:rgba(255,255,255,.05);border-color:#31384c}
.breadcrumb{max-width:1200px;margin:18px auto -16px;padding:0 10px;font-size:13px;color:var(--muted,#555)}.breadcrumb a{color:var(--accent,#4263eb);text-decoration:none}.seo-text{max-width:1200px;margin:26px auto;padding:18px 20px;border-radius:var(--radius,20px);background:var(--card,#fff);box-shadow:var(--shadow,0 6px 18px rgba(0,0,0,0.05));color:var(--muted,#555);font-size:14px}.seo-text h2{font-size:18px;color:inherit;margin:0 0 8px}.seo-text p{margin:0 0 8px}.seo-text ul{margin:8px 0 0 20px}.seo-text li{margin:3px 0}body.dark-mode .seo-text{background:#1f1f23;color:#aaa}
@media(max-width:980px){.toc-toggle{left:8px;padding:10px 11px;font-size:13px}.site-index-panel,.ranking-panel{margin-left:10px;margin-right:10px}.site-link-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.theme-toggle{padding:6px 9px}.lang-links{margin:8px 0 0 0}}@media(max-width:600px){.page-title{font-size:20px;}.site-link-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.ranking-list{grid-template-columns:1fr}.toc-toggle{bottom:74px;top:auto;transform:none;writing-mode:horizontal-tb;left:12px}.toc-drawer{width:min(310px,88vw)}}


/* requested header/category fixes */
.lang-links{display:none!important;}
header nav,.topbar>nav{margin-left:auto;}
.toc-toggle{font-weight:700;}
@media(max-width:600px){
  #card-grid.grid{
    grid-template-columns:repeat(4,minmax(0,1fr))!important;
    gap:8px!important;
  }
  #card-grid .thumb{height:72px!important;}
  #card-grid .card h3{font-size:11px!important;line-height:1.25!important;margin:7px 4px 5px!important;}
  #card-grid .card{border-radius:12px!important;}
}


/* index size alignment */
.container{max-width:1200px!important;margin:40px auto!important;padding-left:18px!important;padding-right:18px!important;}
.hero-info h1{font-size:26px!important;}
.hero-info p{font-size:15px!important;}

/* performance and requested multilingual fixes */
.card{content-visibility:auto;contain-intrinsic-size:220px 220px;}
.thumb img{background:#eef1ff;}
@media(max-width:600px){#card-grid.grid{grid-template-columns:repeat(3,minmax(0,1fr))!important;gap:8px!important;}#card-grid 
.thumb{height:72px!important;}#card-grid .card h3{font-size:11px!important;line-height:1.25!important;margin:7px 4px 5px!important;}
.site-link-grid{grid-template-columns:repeat(4,minmax(0,1fr))!important;}}

.sp-break {
  display: inline;
}

@media (max-width:980px){
  .sp-break {
    display: block;
  }
}

body.dark-mode nav ul,
html[data-theme="dark"] nav ul,
[data-theme="dark"] nav ul {
  background: #1f1f23 !important;
}
header nav a:hover,
.topbar nav a:hover {
  color: #5b8bff !important;
}