:root {
    /* Colors */
    --color-primary: #0040CB;
    --color-primary-dark: #002f9a;
    --color-primary-light: #3366d6;
    --color-secondary: #E6ECFF;
    --color-accent: #008FC8;
    --color-accent-dark: #006fa0;
    --color-bg: #BAE7FF;
    --color-text: #333;
    --color-text-light: #666;
    --color-white: #fff;
    --color-gray-light: #f5f7ff;
    --color-gray-medium: #ccc;
    --color-gray-dark: #999;
  
    /* CTA Gradient */
    --gradient-cta: linear-gradient(90deg, #0040CB 0%, #008FC8 100%);
  
    /* Typography */
    --font-family: 'Zen Kaku Gothic New', 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;
  
    /* 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;
  
    /* Layout */
    --container-sm: 50rem;
    --container-md: 56.25rem;
    --container-lg: 75rem;
    --border-radius: 6px;
    --border-radius-sm: 4px;
    --border-radius-lg: 12px;
  
    /* Shadows */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 64, 203, 0.08);
    --shadow-md: 0 0.25rem 0.75rem rgba(0, 64, 203, 0.12);
    --shadow-lg: 0 0.5rem 1.5rem rgba(0, 64, 203, 0.2);
    --shadow-hover: 0 0.75rem 2.5rem rgba(0, 64, 203, 0.18);
  
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.4s ease;
  
    /* Z-index */
    --z-sticky: 200;
    --z-header: 100;
    --z-overlay: 10;
    --z-base: 1;
  }
  
  /* Reset & Base Styles */
  *,
  *::before,
  *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  html {
    font-size: 16px;
    scroll-behavior: smooth;
  }

  html {
    background-color: var(--color-bg);
  }

  body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--color-text);
    background: transparent;
  }

  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-color: var(--color-bg);
    background-image: url(../img/common/bg_sp.png);
    background-repeat: repeat;
    z-index: -1;
    pointer-events: none;
  }
  
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }

  .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 {
    overflow: hidden;
    padding: var(--space-lg) 0 var(--space-md);
  }
  
  .hero-scroll-track {
    width: 100%;
  }
  
  .hero-scroll-content {
    display: flex;
    gap: 16px;
    padding: 4px 0 8px;
    width: max-content;
    will-change: transform;
    animation: heroScrollLeft 100s linear infinite;
  }
  
  .hero-scroll-content img {
    width: 240px;
    height: 180px;
    border-radius: var(--border-radius-sm);
    object-fit: cover;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
    padding: var(--space-sm);
    background: var(--color-white);
  }

  @keyframes heroScrollLeft {
    to { transform: translateX(calc(-1 * (240px + 16px) * 12)); }
  }
  
  .hero-scroll-content img:nth-child(3n+1) {
    transform: rotate(-2deg);
  }
  
  .hero-scroll-content img:nth-child(3n+2) {
    transform: rotate(1.5deg);
  }
  
  .hero-scroll-content img:nth-child(3n) {
    transform: rotate(-1deg);
  }

  .intro-section {
    position: relative;
    z-index: 2;
    margin-top: -36px; 
  }

  .intro-container {
    max-width: var(--container-md);
    margin: 0 auto;
    padding: 0 var(--space-md);
    text-align: center;
  }
  
  .intro-title {
    margin-bottom: var(--space-md);
  }
  
  .intro-title img {
    margin: 0 auto;
    padding: 0 var(--space-md) 0 var(--space-md);
  }
  
  .intro-content {
    text-align: center;
  }
  
  .intro-text {
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.8;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
  }
  
  .intro-text:last-child {
    margin-bottom: 0;
  }

  .filter-section {
    padding: var(--space-lg) var(--space-md) var(--space-2xl);
  }
  
  .filter-container {
    max-width: var(--container-md);
    margin: 0 auto;
  }
  
  .filter-title {
    font-size: var(--font-size-lg);
    line-height: 1.4;
    font-weight: 700;
    text-align: center;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
  }
  
  .filter-subtitle {
    text-align: center;
    margin-bottom: var(--space-md);
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
  }
  
  .filter-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    border: 3px solid var(--color-secondary);
    padding: var(--space-lg) var(--space-md);
    box-shadow: var(--shadow-md);
  }
  
  .condition-filters {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
  }
  
  .filter-checkbox {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    padding: var(--space-sm);
    border-radius: var(--border-radius-sm);
    border: 1px dotted var(--color-primary-dark);
    background: var(--color-white);
    user-select: none;
  }
  
  .filter-checkbox:has(input[type="checkbox"]:checked) {
    background: var(--color-secondary);
    border-color: var(--color-primary);
  }
  
  .filter-checkbox input[type="checkbox"] {
    display: none;
  }
  
  .checkmark {
    width: 16px;
    height: 16px;
    border: 2px solid var(--color-primary);
    border-radius: var(--border-radius-sm);
    margin-right: var(--space-sm);
    position: relative;
    background: var(--color-white);
    transition: all var(--transition-base);
    flex-shrink: 0;
  }
  
  .filter-checkbox input[type="checkbox"]:checked + .checkmark {
    background: var(--color-primary);
    border-color: var(--color-primary);
  }
  
  .filter-checkbox input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-white);
    font-weight: bold;
    font-size: 11px;
    line-height: 1;
  }
  
  .area-filter {
    margin-bottom: var(--space-md);
  }
  
  .area-filter-title {
    font-size: var(--font-size-sm);
    font-weight: 700;
    text-align: center;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
  }
  
  .area-select-wrapper {
    position: relative;
  }
  
  .area-select {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-gray-medium);
    border-radius: var(--border-radius);
    background: var(--color-white);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    font-weight: 500;
    cursor: pointer;
    appearance: none;
    background-image: url(../img/common/arrow_under.svg);
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    background-size: 16px;
  }
  
  .filter-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-md);
  }
  
  .search-btn {
    background: var(--gradient-cta);
    border: none;
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: 700;
    font-family: var(--font-family);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-2xl);
    border-radius: 100px;
    transition: all var(--transition-base);
    min-width: 160px;
    box-shadow: var(--shadow-sm);
  }
  
  .clear-btn {
    background: none;
    border: none;
    color: var(--color-primary);
    font-size: var(--font-size-xs);
    font-family: var(--font-family);
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: var(--space-xs) var(--space-sm);
    transition: opacity var(--transition-base);
    text-decoration: underline;
    text-underline-offset: 2px;
  }
  
  .clear-icon {
    margin-right: var(--space-xs);
    display: flex;
    align-items: center;
  }
  
  .clear-icon img {
    width: 14px;
    height: 14px;
  }

  .results-container {
    max-width: var(--container-lg);
    margin: 0 auto;
    padding: 0 var(--space-md);
  }
  
  .results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-text);
    padding-bottom: var(--space-sm);
  }
  
  .result-count p {
    font-size: var(--font-size-sm);
  }
  
  .result-count span {
    font-weight: 700;
    font-size: var(--font-size-xl);
  }
  
  .view-toggle {
    display: flex;
    gap: var(--space-sm);
  }
  
  .view-btn {
    width: 36px;
    height: 36px;
    border: 2px solid var(--color-primary);
    background: var(--color-white);
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    transition: all var(--transition-fast);
  }
  
  .view-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
  }
  
  .mobile-only {
    display: flex;
  }
  
  .pc-only {
    display: none;
  }
  
  .no-results {
    background-color: var(--color-white);
    border: 1px solid var(--color-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--space-xl);
    text-align: center;
    margin: var(--space-xl) auto;
    max-width: 37.5rem;
  }
  
  .no-results p:first-child {
    font-size: var(--font-size-base);
    font-weight: bold;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
  }

  .facility-list {
    display: grid;
    gap: var(--space-lg);
  }
  
  .facility-list.list-view {
    grid-template-columns: 1fr;
  }
  
  .facility-list.grid-view {
    grid-template-columns: repeat(2, 1fr);
    row-gap: var(--space-lg);
    column-gap: var(--space-sm);
  }

  .facility-list.grid-view .meta-icon {
    width: 20px;
    height: 20px;
  }
  
  .facility-list.grid-view .area-badge {
    font-size: var(--font-size-xxs);
    padding: 0.1rem var(--space-xs);
  }
  
  .facility-list.grid-view .facility-info {
    padding: var(--space-sm);
  }
  
  .facility-list.grid-view .facility-name {
    font-size: var(--font-size-xs);
    margin-bottom: var(--space-xs);
  }
  
  .facility-list.grid-view .facility-meta {
    margin-bottom: var(--space-xs);
  }
  
  .facility-list.grid-view .meta-item {
    font-size: var(--font-size-xxs);
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
  }
  
  .facility-list.grid-view .facility-features {
    margin-bottom: var(--space-md);
    gap: var(--space-xs);
    grid-template-columns: none;
  }
  
  .facility-list.grid-view .feature-item {
    font-size: var(--font-size-xxs);
  }
  
  .facility-list.grid-view .detail-btn {
    font-size: var(--font-size-xxs);
    padding: var(--space-sm);
  }
  
  .facility-list.grid-view .detail-btn .arrow {
    display: none;
  }

  .facility-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: all var(--transition-slow);
    opacity: 0;
    transform: translateY(1.875rem);
    animation: slideInUp 0.6s ease forwards;
    box-shadow: var(--shadow-sm);
  }
  
  @keyframes slideInUp {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  .facility-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 3 / 2;
  }
  
  .facility-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
  }
  
  .area-badge {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    background: var(--color-white);
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    padding: 0.2rem var(--space-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 700;
    z-index: var(--z-base);
  }
  
  .facility-info {
    padding: var(--space-md);
  }
  
  .facility-name {
    font-size: var(--font-size-base);
    font-weight: 700;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
    line-height: 1.4;
  }
  
  .facility-meta {
    margin-bottom: var(--space-md);
  }
  
  .meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
  }
  
  .meta-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
  }

  .facility-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
  }
  
  .feature-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
    line-height: 1.3;
    background: #efefef;
    padding: var(--space-sm);
    border-radius: var(--border-radius);
  }
  
  .feature-check {
    flex-shrink: 0;
    line-height: 1;
    background: #fafafa;
    border-radius: var(--border-radius-lg);
    padding: var(--space-xs);
  }

  .feature-check img {
    filter: grayscale(1) brightness(3);
  }
  
  .feature-text {
    font-size: 0.75rem;
    color: var(--color-gray-dark);
  }

  .feature-item.current {
    background: var(--color-secondary);
  }
  
  .feature-item.current .feature-check img {
    filter: none;
  }
  
  .feature-item.current .feature-text {
    color: var(--color-primary);
    font-weight: 600;
  }

  .detail-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    background: var(--gradient-cta);
    color: var(--color-white);
    text-decoration: none;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--border-radius);
    font-weight: 700;
    font-size: var(--font-size-sm);
    width: 100%;
    transition: all var(--transition-base);
  }
  
  .arrow {
    display: flex;
    align-items: center;
    flex-shrink: 0;
  }
  
  .arrow img {
    width: 20px;
    height: 20px;
  }

  .feature-section {
    padding: var(--space-4xl) 0 var(--space-2xl);
  }
  
  .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);
  }
  
  .feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }
  
  .feature-banner {
    display: block;
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-sm);
  }
  
  .feature-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .sticky-filter {
    position: fixed;
    inset: 0 0 auto 0;
    background: var(--color-primary);
    transform: translateY(-100%);
    transition: transform var(--transition-slow);
    z-index: var(--z-sticky);
    overflow: hidden;
  }
  
  .sticky-filter.visible {
    transform: translateY(0);
  }
  
  .sticky-filter-inner {
    max-width: var(--container-lg);
    margin: 0 auto;
    padding: 0 var(--space-md);
  }
  
  .sticky-filter-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
    cursor: pointer;
    user-select: none;
  }
  
  .sticky-filter-text {
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: 600;
  }
  
  .sticky-filter-toggle {
    display: flex;
    align-items: center;
  }
  
  .toggle-icon {
    width: 16px;
    height: 16px;
    filter: brightness(0) invert(1);
    transition: transform var(--transition-base);
  }
  
  .sticky-filter.expanded .toggle-icon {
    transform: rotate(180deg);
  }
  
  .sticky-filter-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
  }
  
  .sticky-filter.expanded .sticky-filter-content {
    max-height: 600px;
    padding-bottom: var(--space-lg);
    overflow-y: auto;
  }
  
  .sticky-filter-group {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--space-md);
  }
  
  .sticky-filter-group .area-filter-title {
    margin-top: var(--space-md);
  }

  .footer {
    padding: var(--space-xl) 0;
  }
  
  .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: var(--font-size-sm);
    color: var(--color-text-light);
  }
  
  /* ========== TABLET (481px+) ========== */
  @media (min-width: 481px) {
    .hero-scroll-content img {
      height: 220px;
    }
  
    .intro-title img {
      max-width: 360px;
    }
  
    .intro-text {
      font-size: var(--font-size-base);
    }
  
    .filter-title {
      font-size: var(--font-size-2xl);
    }
  
    .filter-checkbox {
      font-size: var(--font-size-base);
    }
  
    .checkmark {
      width: 20px;
      height: 20px;
    }
  
    .sns-link {
      width: 56px;
      height: 56px;
    }
  }
  
  /* ========== PC (769px+) ========== */
  @media (min-width: 769px) {
    .header {
      padding: var(--space-lg) 0;
    }
  
    .header-logo {
      width: 72px;
    }
  
    body::before {
      background-image: url(../img/common/bg_pc.png);
    }
  
    .hero-section {
      padding: var(--space-2xl) 0 var(--space-lg);
    }
  
    .hero-scroll-content {
      gap: 24px;
    }

    .hero-scroll-content img {
      width: 360px;
      height: 270px;
      border-radius: var(--border-radius);
    }

    @keyframes heroScrollLeft {
      to { transform: translateX(calc(-1 * (360px + 24px) * 12)); }
    }
  
    .intro-section {
      margin-top: -56px;
    }

    .intro-title img {
      max-width: 440px;
    }

    .intro-text {
      font-size: var(--font-size-lg);
    }

    .filter-container {
      max-width: 48rem;
    }
  
    .filter-section {
      padding: var(--space-2xl) var(--space-md) var(--space-3xl);
    }
  
    .filter-title {
      font-size: var(--font-size-3xl);
      margin-bottom: var(--space-xs);
    }
  
    .filter-subtitle {
      font-size: var(--font-size-base);
      margin-bottom: var(--space-lg);
    }
  
    .filter-card {
      padding: var(--space-xl) var(--space-2xl);
    }
  
    .condition-filters {
      grid-template-columns: repeat(3, 1fr);
      gap: var(--space-sm);
      margin-bottom: var(--space-lg);
    }
  
    .filter-checkbox {
      padding: var(--space-sm);
      font-size: var(--font-size-base);
    }
  
    .filter-checkbox:hover {
      background: var(--color-secondary);
      border-color: var(--color-primary);
    }
  
    .checkmark {
      width: 20px;
      height: 20px;
    }
  
    .filter-checkbox input[type="checkbox"]:checked + .checkmark::after {
      font-size: 14px;
    }
  
    .area-select-wrapper {
      max-width: 20rem;
      margin: 0 auto;
    }
  
    .area-select {
      padding: var(--space-sm);
      font-size: var(--font-size-sm);
    }
  
    .filter-actions {
      justify-content: center;
      margin-top: var(--space-md);
    }
  
    .search-btn:hover {
      opacity: 0.88;
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }
  
    .mobile-only {
      display: none;
    }
  
    .pc-only {
      display: block;
    }
  
    .results-container {
      max-width: 60rem;
    }
  
    .facility-list.list-view {
      grid-template-columns: repeat(3, 1fr);
      row-gap: var(--space-2xl);
      column-gap: var(--space-md);
    }
  
    .facility-list.grid-view {
      grid-template-columns: repeat(auto-fit, minmax(21.875rem, 1fr));
      gap: var(--space-lg);
    }
  
    .facility-info {
      padding: var(--space-md);
    }
  
    .facility-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-0.375rem);
    }
  
    .facility-image:hover img {
      transform: scale(1.06);
    }
  
    .detail-btn:hover {
      opacity: 0.88;
      transform: translateY(-0.125rem);
      box-shadow: var(--shadow-lg);
    }
  
    .feature-section {
      padding: var(--space-4xl) 0 var(--space-3xl) 0;
    }
  
    .feature-container {
      max-width: 1024px;
    }
  
    .feature-title {
      font-size: var(--font-size-lg);
      margin-bottom: var(--space-md);
    }
  
    .feature-grid {
      grid-template-columns: repeat(4, 1fr);
      gap: var(--space-md);
    }
  
    .feature-banner:hover {
      transform: translateY(-4px);
    }
  
    .sticky-filter-inner {
      max-width: 60rem;
    }
  
    .sticky-filter-group .condition-filters {
      grid-template-columns: repeat(3, 1fr);
    }
  
    .sns-links {
      gap: var(--space-lg);
    }
  
    .sns-link:hover {
      transform: translateY(-0.25rem);
    }
  
    .copyright {
      font-size: var(--font-size-sm);
    }
  }