:root {
      --primary: #1e1e1e;
      --secondary: #2d2d2d;
      --accent: #6b7280;
      --accent-light: #9ca3af;
      --heart: #ff6b9d;
      --glow: #ff9ecb;
      --text: #ffffff;
      --text-light: #e0e0e0;
    }
    * { margin:0; padding:0; box-sizing:border-box; }
    body {
      font-family: 'Poppins', 'Noto Sans JP', sans-serif;
      background: url('https://cdn.irorinaru.info/images/irorinaru/2026-2-22.jpeg') no-repeat center/cover fixed;
      color: var(--text);
      min-height: 100vh;
      padding-top: 140px;
      position: relative;
    }
    body::before { content:''; position:fixed; inset:0; background:rgba(20,20,20,0.78); z-index:-2; }
    .particle-container { position:fixed; inset:0; pointer-events:none; z-index:-1; overflow:hidden; }

    header {
      position: fixed; top:0; left:0; right:0; z-index:1000;
      background: rgba(20,20,20,0.96); backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--accent);
      padding: 1rem 5%;
    }
    .logo { font-size:2rem; font-weight:800; color:var(--heart); text-shadow:0 0 12px var(--glow); text-align:center; margin-bottom:0.5rem; }

    .search-toggle {
      background: rgba(255,107,157,0.2); color:var(--heart);
      border:1px solid var(--heart); border-radius:999px;
      padding:0.6rem 1.4rem; font-weight:600; cursor:pointer;
      display:block; margin:0 auto; transition:all 0.3s;
    }
    .search-toggle:hover { background:var(--heart); color:white; }

    .search-area {
      max-width:900px; margin:1rem auto; padding:0 1rem;
      background:rgba(45,45,45,0.7); border:1px solid var(--accent); border-radius:16px;
      overflow-y: scroll;
      -webkit-overflow-scrolling: touch;
      max-height:0;
      transition:max-height 0.5s ease, padding 0.4s ease;
      touch-action: manipulation;
    }
    .search-area.open {
      max-height:80vh !important;
      padding:1.5rem 1rem 8rem 1rem;
    }
    .search-row { display:flex; flex-wrap:wrap; gap:1rem; margin-bottom:1.2rem; align-items:center; }
    .search-row label { min-width:90px; color:var(--text-light); font-weight:600; }
    .search-row input, .search-row select {
      flex:1; min-width:180px; padding:0.6rem; background:rgba(30,30,30,0.8);
      border:1px solid var(--accent); border-radius:8px; color:var(--text);
    }
    .extra-buttons {
      display:flex; flex-wrap:wrap; gap:1rem; justify-content:center;
      margin-top:2rem; padding:1.5rem 0;
      background:rgba(45,45,45,0.95); border-top:1px solid var(--accent);
    }
    .extra-buttons button {
      background:rgba(255,107,157,0.2); color:var(--heart); border:1px solid var(--heart);
      padding:0.9rem 1.6rem; border-radius:999px; cursor:pointer; font-weight:600;
      min-width:140px; font-size:1.1rem;
    }
    .extra-buttons button:hover { background:var(--heart); color:white; }

    .hero { text-align:center; padding:4rem 1.5rem 3rem; }
    .hero h1 { font-size: clamp(3rem, 7vw, 5rem); font-weight:900; text-shadow:0 0 30px var(--heart); animation:pulse-glow 4s infinite alternate; }
    @keyframes pulse-glow { from {text-shadow:0 0 20px var(--heart);} to {text-shadow:0 0 60px var(--heart),0 0 100px var(--glow);} }
    .hero p { font-size:1.6rem; color:var(--text-light); }

    .container { max-width:1300px; margin:0 auto; padding:0 1.5rem; }
    .grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(340px, 1fr)); gap:2rem; margin:3rem 0; }
    .card {
      background:rgba(45,45,45,0.92); border:2px solid var(--accent); border-radius:24px;
      overflow:hidden; transition:all 0.45s; text-decoration:none; color:inherit; display:flex; flex-direction:column;
    }
    .card:hover { transform:translateY(-12px); box-shadow:0 20px 40px rgba(255,107,157,0.3); border-color:var(--heart); }
    .thumbnail { width:100%; aspect-ratio:16/9; object-fit:cover; }
    .content { padding:1.4rem; flex:1; display:flex; flex-direction:column; }
    .title { font-size:1.3rem; font-weight:700; margin-bottom:0.7rem; }
    .desc { font-size:0.95rem; color:var(--text-light); margin-bottom:1rem; flex:1; }
    .meta { display:flex; justify-content:space-between; font-size:0.85rem; color:var(--accent-light); }
    .category { background:rgba(255,107,157,0.15); color:var(--heart); padding:0.3rem 0.9rem; border-radius:999px; }
    .creator { font-style:italic; color:var(--accent-light); margin-top:0.5rem; font-size:0.9rem; }

    footer { background:linear-gradient(to top, #111, var(--secondary)); padding:4rem 1.5rem 2rem; text-align:center; border-top:3px solid var(--heart); color:var(--text-light); margin-top:5rem; }
    footer a { color:var(--heart); }

    @media (max-width:768px) {
      body { padding-top:180px; }
      .hero h1 { font-size:3rem; }
      .grid { grid-template-columns:1fr; }
      .search-area.open { max-height:75vh !important; }
      .extra-buttons { padding:1.2rem; margin-top:2.5rem; }
      .search-row { flex-direction:column; align-items:stretch; }
      .search-row label { min-width:auto; }
      .search-row input, .search-row select { width:100%; }
    }

    .floating-heart {
      position:fixed; font-size:2.5rem; color:var(--heart); opacity:0.6;
      pointer-events:none; animation:float-heart linear infinite; white-space:nowrap;
    }
    @keyframes float-heart {
      0%   { transform:translateY(100vh) scale(0.5) rotate(0deg); opacity:0; }
      15%  { opacity:0.6; }
      100% { transform:translateY(-100px) scale(1.2) rotate(360deg); opacity:0; }
    }
    .sparkle {
      position:fixed; width:10px; height:10px; background:var(--accent-light);
      clip-path:polygon(50% 0%,61% 35%,98% 35%,68% 57%,79% 91%,50% 70%,21% 91%,32% 57%,2% 35%,39% 35%);
      pointer-events:none; animation:sparkle-float linear infinite;
    }
    @keyframes sparkle-float {
      0%   { transform:translateY(100vh) rotate(0deg); opacity:0; }
      10%  { opacity:0.8; }
      90%  { opacity:0.8; }
      100% { transform:translateY(-100px) rotate(360deg); opacity:0; }
    }
    .blurred {
      filter: blur(10px);
    }
    .modal {
      display: none;
      position: fixed;
      z-index: 1000;
      left: 0;
      top: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0,0,0,0.5);
    }
    .modal-content {
      background-color: var(--bg-dark);
      color: var(--text-light);
      margin: 20% auto;
      padding: 20px;
      border-radius: 8px;
      width: 300px;
      text-align: center;
      box-shadow: 0 4px 15px rgba(102, 98, 98, 0.3);
      font-family: 'Noto Sans JP', sans-serif;
    }
    .modal-content p {
      margin-bottom: 20px;
      font-size: 1.1rem;
    }
    .modal-content button {
      margin: 10px 5px;
      padding: 10px 20px;
      cursor: pointer;
      background-color: var(--accent);
      color: var(--text-dark);
      border: none;
      border-radius: 4px;
      font-weight: 600;
      transition: background-color 0.3s;
    }
    .modal-content button:hover {
      background-color: var(--accent-light);
    }