/* ================================================
   CSS Variables & Reset
   ================================================ */
:root {
    /* Colors - Premium Palette */
    --primary-color: #1e3a8a;
    --primary-dark: #1e293b;
    --primary-light: #3b5998;
    --secondary-color: #b8860b;
    --secondary-dark: #8b6914;
    --accent-color: #059669;
    
    /* Grays - Premium */
    --text-color: #1f2937;
    --text-light: #6b7280;
    --text-lighter: #9ca3af;
    --bg-light: #f9fafb;
    --bg-gray: #f3f4f6;
    --border-color: #e5e7eb;
    
    /* Success & Status */
    --success-color: #059669;
    --warning-color: #d97706;
    --danger-color: #dc2626;
    --gold-color: #d4af37;
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-max-width: 1200px;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ================================================
   Typography
   ================================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.2rem; }

p {
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* ================================================
   Container & Layout
   ================================================ */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: var(--section-padding);
}

/* ================================================
   Section Headers
   ================================================ */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 2.25rem;
    color: #111827;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
    font-weight: 700;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-top: 20px;
}

/* ================================================
   Buttons
   ================================================ */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    font-size: 1rem;
    letter-spacing: 0.02em;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 2px 8px rgba(30, 58, 138, 0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(30, 41, 59, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border-color: white;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.05rem;
}

/* ================================================
   Header
   ================================================ */
.header {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo h1 {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    font-size: 1.8rem;
    color: var(--primary-color);
    margin: 0;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-light);
    margin: 0;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: var(--transition);
}

/* ================================================
   Hero Section
   ================================================ */
.hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #334155 100%);
    color: white;
    padding: 180px 0 120px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="1200" height="600" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 61, 110, 0.1);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero-title .highlight {
    color: var(--secondary-color);
    display: block;
    margin-top: 10px;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin: 50px 0;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--gold-color);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
    margin-top: 5px;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid white;
    border-radius: 25px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: white;
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

@keyframes scroll {
    0% { top: 10px; opacity: 1; }
    100% { top: 30px; opacity: 0; }
}

/* ================================================
   Features Section
   ================================================ */
.features {
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    border: 1px solid #f3f4f6;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 72px;
    height: 72px;
    background: var(--primary-color);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 1.8rem;
    color: white;
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
    margin: 0;
}

/* ================================================
   Applications Section
   ================================================ */
.applications {
    background: var(--bg-light);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.application-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

.application-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.application-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.application-card h3 {
    color: var(--text-color);
    margin-bottom: 10px;
}

.application-card p {
    color: var(--text-light);
    margin: 0;
}

/* ================================================
   Results Section
   ================================================ */
.results {
    background: white;
}

.results-highlight {
    margin-bottom: 50px;
}

.highlight-card {
    background: linear-gradient(135deg, #1e293b 0%, #1e3a8a 100%);
    color: white;
    padding: 50px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(30, 41, 59, 0.3);
}

.highlight-card.featured {
    position: relative;
    overflow: hidden;
}

.highlight-card.featured::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.highlight-icon i {
    font-size: 4rem;
    margin-bottom: 20px;
}

.highlight-card h3 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.highlight-number {
    font-size: 4rem;
    font-weight: 800;
    color: var(--gold-color);
    margin: 20px 0;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
}

.result-item {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

.result-item:hover {
    background: white;
    border-color: var(--primary-color);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.result-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.result-label {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 10px;
}

.result-category {
    font-size: 1rem;
    color: var(--text-color);
    font-weight: 600;
}

/* Major Clients Highlight */
.major-clients-highlight {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    padding: 50px;
    border-radius: 12px;
    margin-bottom: 40px;
    border: 1px solid var(--border-color);
}

.major-clients-highlight h3 {
    text-align: center;
    color: var(--text-color);
    margin-bottom: 40px;
    font-size: 1.8rem;
    font-weight: 700;
}

.featured-clients-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 30px;
    align-items: start;
}

.featured-client.premier {
    background: white;
    padding: 40px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    border: 2px solid var(--primary-color);
}

.featured-icon {
    width: 100px;
    height: 100px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 3rem;
    color: white;
}

.featured-content h4 {
    font-size: 1.5rem;
    color: var(--text-color);
    margin-bottom: 12px;
    font-weight: 700;
}

.featured-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin: 16px 0;
}

.featured-desc {
    color: var(--text-light);
    font-size: 0.95rem;
    margin: 0;
}

.enterprise-clients {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.enterprise-client {
    background: white;
    padding: 24px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.enterprise-client:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    border-color: var(--primary-color);
}

.enterprise-client i {
    font-size: 2rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.enterprise-client h5 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 4px;
}

.enterprise-client span {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Other Clients */
.other-clients-section {
    background: white;
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.other-clients-section h3 {
    text-align: center;
    color: var(--text-color);
    margin-bottom: 30px;
    font-size: 1.4rem;
    font-weight: 700;
}

.clients-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.client-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-light);
    padding: 12px 20px;
    border-radius: 6px;
    font-weight: 500;
    color: var(--text-color);
    font-size: 0.95rem;
}

.client-item i {
    color: var(--success-color);
    font-size: 1.1rem;
}

/* ================================================
   Comparison Section
   ================================================ */
.comparison-section {
    background: var(--bg-light);
}

.comparison-table-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.comparison-table thead th {
    padding: 24px 20px;
    font-weight: 700;
    font-size: 1.1rem;
    text-align: center;
}

.compare-category {
    background: var(--bg-gray);
    color: var(--text-color);
    width: 25%;
}

.compare-traditional {
    background: #fef2f2;
    color: var(--danger-color);
    width: 37.5%;
}

.compare-premium {
    background: #f0fdf4;
    color: var(--success-color);
    width: 37.5%;
}

.comparison-table tbody tr {
    border-bottom: 1px solid var(--border-color);
}

.comparison-table tbody tr:last-child {
    border-bottom: none;
}

.comparison-table td {
    padding: 20px;
    vertical-align: middle;
}

.category-cell {
    background: var(--bg-light);
    font-weight: 700;
    color: var(--text-color);
    text-align: center;
}

.traditional-cell,
.premium-cell {
    text-align: center;
}

.traditional-cell i.negative {
    color: var(--danger-color);
    font-size: 1.5rem;
    display: block;
    margin-bottom: 8px;
}

.premium-cell i.positive {
    color: var(--success-color);
    font-size: 1.5rem;
    display: block;
    margin-bottom: 8px;
}

.traditional-cell span,
.premium-cell span {
    display: block;
    font-size: 0.95rem;
    color: var(--text-color);
}

.total-row {
    background: #fafafa;
}

.total-row td {
    padding: 24px 20px;
    font-size: 1.1rem;
}

.highlight-cost {
    color: var(--success-color);
}

.cost-note {
    display: block;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 4px;
}

.comparison-summary {
    max-width: 600px;
    margin: 40px auto 0;
}

.summary-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    border: 2px solid var(--success-color);
}

.summary-card i {
    font-size: 3rem;
    color: var(--success-color);
    margin-bottom: 16px;
}

.summary-card h4 {
    color: var(--text-color);
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.summary-card p {
    color: var(--text-light);
    margin: 0;
}

/* ================================================
   Virus Test Section
   ================================================ */
.virus-test-section {
    margin-top: 60px;
    padding: 50px;
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-radius: 12px;
}

.virus-test-title {
    text-align: center;
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 12px;
    font-weight: 700;
}

.virus-test-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 40px;
}

.test-images-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.test-image-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    border: 2px solid var(--border-color);
}

.test-photo {
    width: 100%;
    height: auto;
    display: block;
}

.test-caption {
    padding: 24px;
    text-align: center;
}

.test-caption h4 {
    font-size: 1.2rem;
    color: var(--text-color);
    margin-bottom: 8px;
}

.test-caption p {
    color: var(--text-light);
    margin: 0;
    font-size: 0.95rem;
}

.highlight-result {
    color: var(--success-color) !important;
    font-weight: 700 !important;
    font-size: 1.1rem !important;
}

.bacteria-tests {
    margin: 50px 0;
}

.bacteria-title {
    text-align: center;
    font-size: 1.6rem;
    color: var(--text-color);
    margin-bottom: 30px;
    font-weight: 700;
}

.bacteria-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 25px;
    max-width: 1000px;
    margin: 0 auto;
}

.bacteria-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.bacteria-card:first-child {
    grid-row: 1 / 3;
}

.bacteria-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border-color: var(--success-color);
}

.bacteria-photo {
    width: 100%;
    height: auto;
    display: block;
}

.bacteria-label {
    padding: 20px;
    text-align: center;
}

.bacteria-name {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 8px;
}

.bacteria-result {
    display: block;
    font-size: 0.9rem;
    color: var(--success-color);
    font-weight: 600;
}

.certifications-section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin: 40px 0;
}

.certification-card {
    background: white;
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    border: 2px solid var(--primary-color);
}

.certification-card.antiviral {
    border-color: var(--success-color);
}

.cert-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--primary-color);
    color: white;
    border-radius: 50px;
    font-weight: 700;
    margin-bottom: 20px;
}

.cert-badge.green {
    background: var(--success-color);
}

.cert-badge i {
    font-size: 1.2rem;
}

.certification-card h4 {
    font-size: 1.3rem;
    color: var(--text-color);
    margin-bottom: 12px;
}

.certification-card p {
    color: var(--text-light);
    line-height: 1.8;
    margin: 0;
}

.virus-test-note {
    display: flex;
    gap: 24px;
    background: white;
    padding: 32px;
    border-radius: 12px;
    border-left: 4px solid var(--success-color);
}

.note-icon {
    flex-shrink: 0;
}

.note-icon i {
    font-size: 3rem;
    color: var(--success-color);
}

.note-content h4 {
    color: var(--text-color);
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.note-content p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

.note-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.note-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--text-color);
}

.note-features i {
    color: var(--success-color);
    font-size: 1.1rem;
}

/* ================================================
   Case Studies Section
   ================================================ */
.case-studies {
    background: white;
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.case-study-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.case-study-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.case-image {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
}

.case-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-size: 1rem;
    font-weight: 600;
    color: white;
}

.case-placeholder i {
    font-size: 4rem;
}

.case-placeholder.subway {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b5998 100%);
}

.case-placeholder.mall {
    background: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
}

.case-placeholder.clinic {
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
}

.case-placeholder.office {
    background: linear-gradient(135deg, #0891b2 0%, #06b6d4 100%);
}

.case-placeholder.bus {
    background: linear-gradient(135deg, #dc2626 0%, #ef4444 100%);
}

.case-placeholder.welfare {
    background: linear-gradient(135deg, #ea580c 0%, #f97316 100%);
}

.case-info {
    padding: 24px;
}

.case-info h4 {
    font-size: 1.2rem;
    color: var(--text-color);
    margin-bottom: 8px;
    font-weight: 700;
}

.case-location {
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.case-desc {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0;
}

/* ================================================
   Durability Section
   ================================================ */
.durability {
    background: var(--bg-light);
}

.durability-comparison {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 40px;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
}

.comparison-item {
    text-align: center;
}

.comparison-label {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 20px;
    padding: 12px 20px;
    background: var(--bg-light);
    border-radius: 8px;
    display: inline-block;
}

.comparison-label.after {
    background: var(--primary-color);
    color: white;
}

.comparison-image-wrapper {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    border: 2px solid var(--border-color);
}

.comparison-photo {
    width: 100%;
    height: auto;
    display: block;
}

.comparison-divider {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    padding: 0 20px;
}

.divider-line {
    width: 2px;
    height: 80px;
    background: linear-gradient(to bottom, transparent, var(--primary-color), transparent);
}

.divider-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 24px;
    background: white;
    border: 2px solid var(--primary-color);
    border-radius: 50px;
    white-space: nowrap;
}

.divider-badge i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.divider-badge span {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-color);
}

.durability-note {
    max-width: 800px;
    margin: 40px auto 0;
    padding: 24px 32px;
    background: var(--bg-light);
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.durability-note p {
    color: var(--text-color);
    font-size: 1rem;
    line-height: 1.8;
    margin: 0;
    text-align: center;
}

/* ================================================
   Safety Section
   ================================================ */
.safety {
    background: white;
}

.safety-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.safety-card {
    background: var(--bg-light);
    padding: 40px 30px;
    border-radius: 15px;
    position: relative;
    transition: var(--transition);
}

.safety-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.safety-icon {
    width: 70px;
    height: 70px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.8rem;
    color: var(--primary-color);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.safety-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.safety-card p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.safety-badge {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
}

.safety-badge {
    background: var(--success-color);
    color: white;
}

.safety-badge.success {
    background: var(--primary-color);
    color: white;
}

.safety-badge.special {
    background: var(--secondary-color);
    color: white;
}

/* ================================================
   Price Section
   ================================================ */
.price {
    background: var(--bg-light);
}

.price-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.price-card {
    background: white;
    border-radius: 12px;
    padding: 40px 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    border: 2px solid #e5e7eb;
}

.price-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.price-card.main {
    border-color: var(--primary-color);
    position: relative;
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.15);
}

.price-card.main::before {
    content: 'おすすめ';
    position: absolute;
    top: -12px;
    right: 20px;
    background: var(--gold-color);
    color: white;
    padding: 6px 20px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    box-shadow: 0 2px 8px rgba(212, 175, 55, 0.4);
}

.price-header {
    margin-bottom: 20px;
}

.price-header h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.price-header p {
    color: var(--text-light);
    margin: 0;
}

.price-amount {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 30px 0;
}

.currency {
    font-size: 1.5rem;
    color: var(--text-light);
    align-self: flex-start;
    margin-top: 10px;
}

.amount {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.unit {
    font-size: 1rem;
    color: var(--text-light);
    align-self: flex-end;
    margin-bottom: 10px;
}

.price-details {
    color: var(--text-light);
    margin-bottom: 30px;
}

.price-details p {
    margin: 0;
}

.price-features {
    text-align: left;
    margin: 30px 0;
}

.price-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
}

.price-feature i {
    color: var(--success-color);
    font-size: 1.2rem;
}

.price-card .btn {
    width: 100%;
    margin-top: 20px;
}

.loan-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 30px;
}

.loan-card,
.insurance-card {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    display: flex;
    gap: 30px;
    align-items: start;
    border: 1px solid var(--border-color);
}

.loan-icon {
    width: 70px;
    height: 70px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    flex-shrink: 0;
}

.insurance-icon-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.insurance-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    color: white;
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
}

.insurance-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--success-color);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    white-space: nowrap;
}

.insurance-badge i {
    font-size: 0.9rem;
}

.loan-content h3,
.insurance-content h3 {
    color: var(--text-color);
    margin-bottom: 15px;
    font-weight: 700;
}

.loan-highlight {
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.loan-content p,
.insurance-content p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 15px;
}

.insurance-content p strong {
    color: var(--success-color);
    font-weight: 700;
}

.insurance-note {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: #f0fdf4;
    border-left: 4px solid var(--success-color);
    border-radius: 6px;
    margin-top: 16px;
}

.insurance-note i {
    color: var(--success-color);
    font-size: 1.1rem;
}

.insurance-note span {
    color: var(--text-color);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ================================================
   CTA Section
   ================================================ */
.cta {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
    color: white;
    text-align: center;
    padding: 80px 0;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

/* ================================================
   Contact Section
   ================================================ */
.contact {
    background: var(--bg-light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
}

.contact-card {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.contact-card h3 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-details h4 {
    color: var(--text-color);
    margin-bottom: 8px;
    font-size: 1rem;
}

.contact-details p {
    color: var(--text-light);
    margin: 0;
    line-height: 1.8;
}

.contact-details a {
    color: var(--primary-color);
    font-weight: 600;
}

.contact-details a:hover {
    text-decoration: underline;
}

.contact-sub {
    font-size: 0.9rem;
    color: var(--text-lighter);
}

.business-hours {
    background: var(--bg-light);
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

.business-hours h4 {
    color: var(--primary-color);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.business-hours p {
    color: var(--text-light);
    margin: 0;
}

.contact-form-wrapper {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.form-group {
    margin-bottom: 25px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 600;
}

.required {
    color: var(--danger-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 84, 144, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.form-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    display: none;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

/* ================================================
   Footer
   ================================================ */
.footer {
    background: #0f172a;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    color: var(--gold-color);
    margin-bottom: 15px;
    letter-spacing: -0.01em;
}

.footer-section h4 {
    color: white;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-description {
    margin-top: 15px;
    font-size: 0.9rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-section ul li a:hover {
    color: var(--gold-color);
}

.footer-section ul li i {
    margin-right: 8px;
    color: var(--gold-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom p {
    margin-bottom: 5px;
}

.footer-note {
    font-size: 0.9rem;
}

/* ================================================
   Scroll to Top Button
   ================================================ */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(30, 58, 138, 0.3);
    transition: var(--transition);
    z-index: 999;
}

.scroll-top:hover {
    transform: translateY(-3px);
    background: var(--primary-dark);
    box-shadow: 0 6px 20px rgba(30, 41, 59, 0.4);
}

.scroll-top.visible {
    display: flex;
}

/* ================================================
   AOS Animation Library Integration
   ================================================ */
[data-aos] {
    opacity: 0;
    transition-property: opacity, transform;
}

[data-aos].aos-animate {
    opacity: 1;
}

/* ================================================
   Responsive Design
   ================================================ */

/* Tablet */
@media (max-width: 968px) {
    .section-title {
        font-size: 2rem;
    }
    
    .hero {
        padding: 140px 0 80px;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-stats {
        gap: 40px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .features-grid,
    .applications-grid,
    .results-grid,
    .safety-grid,
    .price-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .durability-comparison {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .comparison-divider {
        flex-direction: row;
        padding: 20px 0;
    }
    
    .divider-line {
        width: 60px;
        height: 2px;
        background: linear-gradient(to right, transparent, var(--primary-color), transparent);
    }
    
    .divider-badge {
        flex-direction: row;
        padding: 12px 20px;
    }
    
    .divider-badge i {
        transform: rotate(90deg);
    }
    
    .comparison-table-wrapper {
        overflow-x: scroll;
    }
    
    .comparison-table {
        min-width: 600px;
    }
    
    .test-images-grid {
        grid-template-columns: 1fr;
    }
    
    .bacteria-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }
    
    .bacteria-card:first-child {
        grid-row: auto;
    }
    
    .certifications-section {
        grid-template-columns: 1fr;
    }
    
    .virus-test-section {
        padding: 30px 20px;
    }
    
    .case-studies-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .loan-section {
        grid-template-columns: 1fr;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }
    
    .header-content {
        padding: 10px 0;
    }
    
    .logo h1 {
        font-size: 1.4rem;
    }
    
    .logo-subtitle {
        font-size: 0.65rem;
    }
    
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .nav.active {
        max-height: 400px;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 0;
        padding: 20px;
    }
    
    .nav-list li {
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-link {
        display: block;
        padding: 15px 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .features-grid,
    .applications-grid {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .result-number {
        font-size: 2rem;
    }
    
    .comparison-label {
        font-size: 0.9rem;
        padding: 8px 14px;
    }
    
    .divider-badge {
        padding: 10px 16px;
    }
    
    .divider-badge i {
        font-size: 1.2rem;
    }
    
    .divider-badge span {
        font-size: 0.9rem;
    }
    
    .durability-note {
        padding: 16px 20px;
    }
    
    .durability-note p {
        font-size: 0.9rem;
    }
    
    .comparison-table thead th {
        padding: 16px 12px;
        font-size: 0.9rem;
    }
    
    .comparison-table td {
        padding: 16px 12px;
        font-size: 0.85rem;
    }
    
    .comparison-summary {
        margin: 30px 20px 0;
    }
    
    .summary-card {
        padding: 24px 20px;
    }
    
    .summary-card i {
        font-size: 2.5rem;
    }
    
    .summary-card h4 {
        font-size: 1.2rem;
    }
    
    .virus-test-title {
        font-size: 1.4rem;
    }
    
    .test-images-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .test-caption {
        padding: 20px;
    }
    
    .bacteria-title {
        font-size: 1.3rem;
    }
    
    .bacteria-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        gap: 20px;
    }
    
    .bacteria-card:first-child {
        grid-row: auto;
    }
    
    .bacteria-label {
        padding: 16px;
    }
    
    .bacteria-name {
        font-size: 1rem;
    }
    
    .bacteria-result {
        font-size: 0.85rem;
    }
    
    .certifications-section {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .certification-card {
        padding: 24px 20px;
    }
    
    .virus-test-note {
        flex-direction: column;
        padding: 24px 20px;
        text-align: center;
    }
    
    .note-icon i {
        font-size: 2.5rem;
    }
    
    .case-image {
        height: 180px;
    }
    
    .case-placeholder i {
        font-size: 3rem;
    }
    
    .case-info {
        padding: 20px;
    }
    
    .safety-grid,
    .price-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .cta-content h2 {
        font-size: 1.75rem;
    }
    
    .cta-content p {
        font-size: 1rem;
    }
    
    .loan-card,
    .insurance-card {
        flex-direction: column;
        text-align: center;
        align-items: center;
        padding: 30px 20px;
    }
    
    .insurance-icon-wrapper {
        flex-direction: column;
    }
    
    .insurance-badge {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
    
    .loan-section {
        grid-template-columns: 1fr;
    }
    
    .featured-client.premier {
        padding: 30px 20px;
    }
    
    .featured-content h4 {
        font-size: 1.3rem;
    }
    
    .featured-number {
        font-size: 1.8rem;
    }
    
    .enterprise-client {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .btn {
        padding: 10px 25px;
    }
    
    .btn-large {
        padding: 12px 30px;
        font-size: 1rem;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
    }
    
    .highlight-card {
        padding: 30px 20px;
    }
    
    .highlight-number {
        font-size: 3rem;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .clients-list {
        flex-direction: column;
        align-items: stretch;
    }
    
    .comparison-label {
        font-size: 1rem;
        padding: 10px 16px;
    }
    
    .comparison-image-wrapper {
        border-width: 1px;
    }
    
    .durability-note {
        padding: 20px 24px;
        margin: 30px auto 0;
    }
    
    .durability-note p {
        font-size: 0.95rem;
    }
    
    .featured-clients-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .enterprise-clients {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .featured-icon {
        width: 80px;
        height: 80px;
        font-size: 2.5rem;
    }
    
    .featured-number {
        font-size: 2rem;
    }
    
    .major-clients-highlight {
        padding: 30px 20px;
    }
    
    .other-clients-section {
        padding: 30px 20px;
    }
    
    .insurance-icon-wrapper {
        flex-direction: row;
    }
    
    .insurance-icon {
        width: 60px;
        height: 60px;
        font-size: 1.8rem;
    }
    
    .contact-card,
    .contact-form-wrapper {
        padding: 25px;
    }
    
    .scroll-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
        font-size: 1.3rem;
    }
}

/* Print Styles */
@media print {
    .header,
    .scroll-top,
    .menu-toggle,
    .cta,
    .contact-form-wrapper {
        display: none;
    }
    
    body {
        color: black;
    }
    
    a {
        text-decoration: underline;
    }
}