:root {  
    /* Colors */
    --color-bg: #FFF0D5;
    --color-light-bg: #FFF9F0;
    --color-white: #fff;
    --color-text: #333;
    --color-text-light: #666;
    --color-gray-light: #f5f5f5;
    --color-gray-medium: #ccc;
    --color-gray-border: #e0e0e0;
  
    /* tab color */
    --tab-color: #FBD846;
    --tab-color-dark: #d4a820;
  
    /* Spacing */
    --space-s: 0.15rem;
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 2.5rem;
    --space-3xl: 3rem;
    --space-4xl: 4rem;
  
    /* Typography */
    --font-family: 'Zen Maru Gothic', sans-serif;
    --font-size-xxs: 0.625rem;
    --font-size-xs: 0.8125rem;
    --font-size-s: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.4rem;
    --font-size-3xl: 1.5rem;
    --font-size-4xl: 1.75rem;
    --font-size-5xl: 2rem;
    --font-size-6xl: 2.5rem;
    --font-size-7xl: 3rem;
  
    /* Layout */
    --container-sm: 50rem;
    --container-md: 56.25rem;
    --container-lg: 75rem;
    --border-radius: 6px;
    --border-radius-sm: 4px;
    --border-radius-lg: 8px;
  
    /* Shadows */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.1);
    --shadow-md: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 0.5rem 1.25rem rgba(181, 102, 69, 0.3);
    --shadow-hover: 0 0.75rem 3rem rgba(181, 102, 69, 0.2);
  
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.4s ease;
  
    /* Z-index */
    --z-header: 300;
    --z-sticky: 200;
    --z-dropdown: 100;
    --z-overlay: 10;
    --z-base: 1;
  }
  
  /* tab */
  body.tab-1 { --tab-color: #FBD846; --tab-color-dark: #d4a820; }
  body.tab-2 { --tab-color: #F27E6F; --tab-color-dark: #d05a4a; }
  body.tab-3 { --tab-color: #6ECA67; --tab-color-dark: #4aa843; }
  body.tab-4 { --tab-color: #64BFD1; --tab-color-dark: #3d9eb5; }
  
  [hidden] { display: none !important; }

  /* Reset & Base Styles */
  *,
  *::before,
  *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
  
  html {
    font-size: 16px;
    scroll-behavior: smooth;
  }
  
  body {
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-bg);
    background-image:
      linear-gradient(rgba(255,255,255,0.55) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.55) 1px, transparent 1px);
    background-size: 16px 16px;
    background-attachment: fixed;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }
  
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }
  
  a {
    color: inherit;
    text-decoration: none;
  }
  
  button {
    font-family: var(--font-family);
    cursor: pointer;
    border: none;
    background: none;
  }
  
  .sp-only  { display: block; }
  .pc-only  { display: none; }
  
  .header {
      background: var(--color-white);
      padding: var(--space-md) 0;
      position: relative;
      z-index: var(--z-header);
    }
    
    .header-logo {
      display: block;
      width: 64px;
      margin: 0 auto;
      text-decoration: none;
    }
  
  .hero-section {
    position: relative;
    overflow: hidden;
  }
  
  .hero-bg {
    width: 100%;
    aspect-ratio: 390 / 220;
    max-height: 480px;
    overflow: hidden;
  }
  
  .hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
  }
  
  .hero-title {
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(85%, 520px);
    z-index: var(--z-overlay);
    pointer-events: none;
  }
  
  .hero-title img {
    width: 100%;
    height: auto;
  }
  
  .intro-section {
    padding: var(--space-lg) var(--space-md);
    text-align: center;
  }
  
  .intro-inner {
    max-width: var(--container-md);
    margin: 0 auto;
  }
  
  .intro-text {
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.8;
    color: var(--color-text);
  }
  
  .results-section {
    padding: 0 0 var(--space-lg);
  }
  
  .results-inner {
    max-width: var(--container-lg);
    margin: 0 auto;
  }
  
  .tab-nav {
    display: flex;
    align-items: flex-end;
    border-bottom: 6px solid var(--tab-color);
    overflow-x: auto;
    overflow-y: visible;
    scrollbar-width: none;
    -ms-overflow-style: none;
    gap: var(--space-xs);
  }
  
  .tab-nav::-webkit-scrollbar {
    display: none;
  }
  
  .tab-btn {
    flex: 1;
    min-width: 80px;
    padding: 10px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    white-space: nowrap;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    transition: color var(--transition-fast), background var(--transition-fast);
  }
  
  .tab-btn:hover {
    background: var(--color-gray-light);
    color: var(--color-text);
  }
  
  .tab-btn.active {
    padding-top: 12px;
    padding-bottom: 12px;
    color: var(--color-text);
    font-size: var(--font-size-base);
    font-weight: 700;
  }

  #tab-btn-1.tab-btn {
    background: #FBD846;
  }

  #tab-btn-2.tab-btn {
    background: #F27E6F;
  }

  #tab-btn-3.tab-btn {
    background: #6ECA67;
  }

  #tab-btn-4.tab-btn {
    background: #64BFD1;
  }
  
  .tab-content {
    background: var(--color-white);
    padding: var(--space-lg) var(--space-md);
    border-bottom: 6px solid var(--tab-color);
  }
  
  .tab-subtitle {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
    line-height: 1.5;
    text-align: center;
  }

  .filter-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    background: var(--color-light-bg);
    padding: 12px;
    border: 1px solid var(--color-gray-border);
    border-radius: var(--border-radius-lg);
  }
  
  .filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
  }
  
  .filter-label {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-text);
  }
    
  .area-select {
    width: 100%;
    padding: 0 var(--space-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    height: 2.5rem;
    color: var(--color-text);
    background: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--border-radius);
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    transition: border-color var(--transition-fast);
    background-image: url(../img/common/arrow_under.svg);
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    background-size: 16px;
  }
  
  .area-select:focus {
    outline: none;
    border-color: var(--tab-color);
  }

  .pref-dropdown {
    position: relative;
  }
  
  .pref-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 2.5rem;
    padding: 0 var(--space-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    background: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--border-radius);
    text-align: left;
    transition: border-color var(--transition-fast), opacity var(--transition-fast);
    cursor: pointer;
  }
  
  .pref-trigger:disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }
  
  .pref-trigger:not(:disabled):hover {
    border-color: var(--tab-color);
  }
  
  .pref-trigger[aria-expanded="true"] {
    border-color: var(--tab-color);
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
  }
  
  .pref-trigger-arrow {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-left: var(--space-sm);
    transition: transform var(--transition-fast);
  }

  .pref-trigger-arrow img {
    width: 16px;
    height: 16px;
    display: block;
  }
  
  .pref-trigger[aria-expanded="true"] .pref-trigger-arrow {
    transform: rotate(180deg);
  }
  
  .pref-trigger-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  
  .pref-panel {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    border: 1px solid var(--tab-color);
    border-top: none;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    max-height: 220px;
    overflow-y: auto;
    z-index: var(--z-dropdown);
    display: none;
    box-shadow: var(--shadow-md);
  }
  
  .pref-panel.open {
    display: block;
  }

  .pref-option {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    transition: background var(--transition-fast);
    user-select: none;
  }
  
  .pref-option:hover {
    background: var(--color-bg);
  }
  
  .pref-option input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--tab-color);
    cursor: pointer;
    flex-shrink: 0;
  }
  
  .pref-option-text {
    font-size: var(--font-size-sm);
    color: var(--color-text);
  }

  .results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-gray-border);
    scroll-margin-top: 72px;
  }
  
  .count-text {
    font-size: var(--font-size-sm);
    color: var(--color-text);
  }

  .count-text span {
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--color-text);
  }
  
  .view-toggle {
    display: flex;
    gap: 2px;
    background: var(--color-gray-light);
    border-radius: var(--border-radius);
    padding: 2px;
  }
  
  .view-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    color: var(--color-gray-medium);
    transition: background var(--transition-fast), color var(--transition-fast);
  }
  
  .view-btn.active {
    background: var(--tab-color);
    color: var(--color-white);
  }

  .facility-list {
    display: grid;
    gap: var(--space-lg);
    transition: opacity 0.2s ease;
  }

  .facility-list.loading {
    opacity: 0.3;
    pointer-events: none;
  }
  
  .facility-list.list-view {
    grid-template-columns: 1fr;
  }
  
  .facility-list.grid-view {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .facility-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
    animation: cardSlideIn 0.4s ease both;
  }
  
  @keyframes cardSlideIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  .facility-list.list-view .facility-card {
    display: flex;
    flex-direction: column;
  }

  .facility-list.grid-view .facility-card {
    display: flex;
    flex-direction: column;
  }

  .facility-list.grid-view .facility-image {
    height: 7.5rem;
  }

  .facility-list.grid-view .detail-btn .arrow {
    display: none;
  }

  .facility-list.grid-view .area-badge {
    font-size: var(--font-size-xxs);
    padding: 0.1rem var(--space-xs);
  }
  
  .facility-image-link {
    display: block;
    overflow: hidden;
  }
  
  .facility-image {
    position: relative;
    overflow: hidden;
    height: 12.5rem;
  }
    
  .facility-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
  }
  
  .facility-image-link:hover .facility-image img {
    transform: scale(1.05);
  }

  .area-badge {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    background: var(--color-white);
    border: 1px solid var(--tab-color);
    color: var(--tab-color-dark);
    padding: 0.2rem var(--space-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    z-index: 1;
  }

  .facility-info {
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    flex: 1;
  }
  
  .facility-list.grid-view .facility-info {
    padding: var(--space-sm);
    gap: var(--space-sm);
  }
  
  .facility-name {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.4;
  }
  
  .facility-list.grid-view .facility-name {
    font-size: var(--font-size-s);
  }
  
  .facility-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
  }

  .facility-list.grid-view .meta-item {
    font-size: var(--font-size-xxs);
  }
  
  .meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-light);
  }
  
  .meta-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--color-text-light);
  }

  .detail-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    background: var(--tab-color);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: 700;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--border-radius);
    transition: background var(--transition-fast), opacity var(--transition-fast);
    margin-top: auto;
  }
  
  .detail-btn:hover {
    opacity: 0.85;
  }
  
  .facility-list.grid-view .detail-btn {
    font-size: var(--font-size-xxs);
    padding: var(--space-sm);
  }
  
  .detail-btn .arrow {
    position: relative;
    display: flex;
    align-items: center;
    flex-shrink: 0;
    width: 20px;
    height: 20px;
  }

  .no-results {
    text-align: center;
    padding: var(--space-3xl) var(--space-md);
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.8;
    background: var(--color-gray-light);
    border-radius: var(--border-radius-lg);
  }

  #load-more-sentinel {
    height: 1px;
    visibility: hidden;
    pointer-events: none;
  }

  .load-more-wrap {
    text-align: center;
    margin-top: var(--space-xl);
    padding-bottom: var(--space-lg);
  }

  .load-more-btn {
    display: inline-block;
    background: var(--tab-color);
    color: var(--color-text);
    border: none;
    padding: var(--space-sm) var(--space-2xl);
    border-radius: 2rem;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 700;
    cursor: pointer;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
  }

  .load-more-btn:hover {
    opacity: 0.85;
    transform: translateY(-2px);
  }

  body.tab-2 .load-more-btn,
  body.tab-3 .load-more-btn,
  body.tab-4 .load-more-btn {
    color: var(--color-white);
  }

  .feature-section {
      padding: var(--space-lg) 0;
    }
    
    .feature-container {
      max-width: var(--container-lg);
      margin: 0 auto;
      padding: 0 var(--space-md);
    }
    
    .feature-title {
      font-size: var(--font-size-lg);
      font-weight: 700;
      text-align: center;
      margin-bottom: var(--space-md);
      color: var(--color-secondary);
    }
    
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: var(--space-sm);
    }
    
    .feature-banner {
      display: block;
      border-radius: var(--border-radius-lg);
      overflow: hidden;
      transition: transform var(--transition-base);
    }
    
    .feature-banner img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

  .footer {
      background-repeat: repeat;
      padding: var(--space-xl) 0 var(--space-xl);
      position: relative;
    }
    
    .footer-container {
      max-width: var(--container-sm);
      margin: 0 auto;
      padding: 0 var(--space-md);
      text-align: center;
    }
    
    .sns-links {
      display: flex;
      justify-content: center;
      gap: var(--space-md);
      margin-bottom: var(--space-xl);
    }
    
    .sns-link {
      width: 48px;
      height: 48px;
      background: var(--color-white);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      transition: all var(--transition-base);
    }
    
    .copyright {
      font-size: 0.95rem;
      opacity: 0.8;
      color: var(--color-secondary);
    }

  .bottom-floating-wrap {
    position: fixed;
    bottom: var(--space-lg);
    left: 50%;
    transform: translate(-50%, calc(100% + 80px)); 
    z-index: var(--z-sticky);
    width: 100%;
    max-width: 200px;
    pointer-events: none;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .bottom-floating-wrap.visible {
    transform: translate(-50%, 0);
    pointer-events: auto;
  }

  .bottom-floating-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 12px 20px;
    background: var(--color-text);
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: 700;
    border-radius: 999px;
    box-shadow: var(--shadow-md);
    transition: background 0.2s ease, transform 0.2s ease;
    opacity: 0.9;
  }

  .bottom-floating-btn:hover {
    transform: translateY(-2px);
  }
  
  /* ========== タブレット (481px+) ========== */
  @media (min-width: 481px) {
    .hero-bg {
      aspect-ratio: 16 / 7;
      max-height: 420px;
    }
  
    .intro-text {
      font-size: var(--font-size-base);
    }
  
    .tab-btn {
      font-size: var(--font-size-base);
      padding: 10px;
    }

    .tab-btn.active {
        padding-top: 12px; 
        padding-bottom: 12px;
        font-size: var(--font-size-lg);
      }
  
    .filter-row {
      align-items: flex-end;
    }
  
    .filter-group {
      flex: 1;
    }
  
    .tab-subtitle {
      font-size: var(--font-size-lg);
    }
  
    .feature-grid {
      grid-template-columns: repeat(4, 1fr);
    }
  }
  
  /* ========== PC (769px+) ========== */
  @media (min-width: 769px) {
    .sp-only { display: none; }
    .pc-only { display: block; }
  
    .header {
      padding: var(--space-lg) 0;
    }
  
    .header-logo {
      width: 72px;
    }
  
    .hero-bg {
      aspect-ratio: 1280 / 500;
      max-height: 400px;
    }
  
    .hero-title {
      width: 575px;
    }
  
    .intro-section {
      padding: var(--space-2xl) var(--space-2xl);
    }
  
    .intro-text {
      font-size: var(--font-size-lg);
    }
  
    .results-inner {
      padding: 0 var(--space-2xl);
    }
  
    .tab-content {
      padding: var(--space-xl) var(--space-2xl);
    }
  
    .tab-subtitle {
      font-size: var(--font-size-xl);
      margin-bottom: var(--space-xl);
    }
  
    .filter-row {
      gap: var(--space-md);
    }
  
    .filter-label {
      font-size: var(--font-size-base);
    }
  
    .area-select,
    .pref-trigger {
      font-size: var(--font-size-sm);
    }
  
    /* PC: 常にリスト3列表示 */
    .facility-list.list-view {
      grid-template-columns: repeat(3, 1fr);
      row-gap: var(--font-size-7xl);
    }
  
    .facility-list.grid-view {
      grid-template-columns: repeat(auto-fit, minmax(22rem, 1fr));
      gap: var(--space-lg);
    }
  
    .facility-card:hover {
      box-shadow: 0 8px 24px rgba(0,0,0,0.15);
      transform: translateY(-4px);
    }
  
    .facility-name {
      font-size: var(--font-size-md);
    }
  
    .detail-btn {
      font-size: var(--font-size-base);
      padding: var(--space-sm) var(--space-lg);
    }
  
    .meta-icon {
      width: 24px;
      height: 24px;
    }
  
    .feature-container {
      max-width: 1024px;
    }
  
    .feature-grid {
      grid-template-columns: repeat(4, 1fr);
      gap: var(--space-md);
    }
  
    .feature-banner:hover {
      transform: translateY(-4px);
    }
  
    .sns-links {
      gap: var(--space-lg);
    }
  
    .sns-link:hover {
      transform: translateY(-0.25rem);
    }
  }