/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

/* CSS Variables - New Color Palette */
:root {
    --primary-color: #1A3C6E;
    --accent-color: #E67E22;
    --accent-hover: #d2691e;
    --secondary-color: #E67E22;
    --light-bg: #F5F5F5;
    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    --text-primary: #1A3C6E;
    --text-secondary: #4a5568;
    --text-light: #ffffff;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --transition: all 0.3s ease;
    --container-max-width: 1200px;
}

/* Accessibility - Skip Link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--accent-color);
    color: var(--white);
    padding: 1rem 2rem;
    text-decoration: none;
    z-index: 10000;
    font-weight: 600;
}

.skip-link:focus {
    top: 0;
}

/* Utility Classes */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.text-accent {
    color: var(--accent-color);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.btn-lg {
    padding: 1.5rem 2rem;
    font-size: 1.125rem;
}

.btn-full {
    width: 100%;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-subtitle {
    color: var(--accent-color);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.section-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 48rem;
    margin: 0 auto;
    line-height: 1.6;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
    background-color: transparent;
}

.nav.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 5rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--white);
    transition: var(--transition);
}

.logo-image {
    height: 3rem;
    width: auto;
    transition: var(--transition);
    display: block;
}

.nav-logo:hover .logo-image {
    transform: scale(1.05);
}

.nav.scrolled .nav-logo {
    color: var(--text-primary);
}

.nav.scrolled .logo-image {
    filter: brightness(0.2);
}

.logo-accent {
    color: var(--accent-color);
}

.nav-desktop {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.nav.scrolled .nav-link {
    color: var(--gray-700);
}

.nav-link:hover {
    color: var(--accent-color);
}

.nav-mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.nav.scrolled .nav-mobile-toggle {
    color: var(--text-primary);
}

.nav-mobile {
    display: none;
    background-color: var(--white);
    border-top: 1px solid var(--gray-200);
    padding: 1rem 0;
    flex-direction: column;
    gap: 1rem;
}

.nav-mobile.show {
    display: flex;
}

.nav-mobile-link {
    background: none;
    border: none;
    color: var(--gray-700);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    padding: 0.5rem 1rem;
    width: 100%;
}

.nav-mobile-link:hover {
    background-color: var(--gray-100);
}

.nav-mobile-btn {
    margin: 0 1rem;
}

/* Language Toggle Button */
.language-toggle {
    background: none;
    border: 2px solid var(--white);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    min-width: 2.5rem;
    text-align: center;
}

.language-toggle:hover {
    color: var(--accent-color);
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.nav.scrolled .language-toggle {
    color: var(--gray-700);
    border-color: var(--gray-700);
}

.nav.scrolled .language-toggle:hover {
    color: var(--accent-color);
    background-color: var(--light-bg);
    border-color: var(--accent-color);
}


/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 120px;
    background: #000;
    color: var(--white);
    overflow: hidden;
}

/* Background Slider - 7 images with smooth transitions */
.hero-slider {
    position: absolute;
    inset: 0;
    z-index: 1;
    background-color: transparent;
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    animation: hero-slider 63s infinite; /* 7 images × 9 seconds each */
    transition: opacity 1s ease-in-out;
}

/* Load background images from data-bg attribute for performance */
.hero-slide[data-bg] {
    background-image: none; /* Initial state - will be set by JS */
}

.hero-slide:nth-child(1) {
    animation-delay: 0s;
    opacity: 1;
    z-index: 7;
}

.hero-slide:nth-child(2) {
    animation-delay: 8.5s;
    z-index: 6;
}

.hero-slide:nth-child(3) {
    animation-delay: 17s;
    z-index: 5;
}

.hero-slide:nth-child(4) {
    animation-delay: 25.5s;
    z-index: 4;
}

.hero-slide:nth-child(5) {
    animation-delay: 34s;
    z-index: 3;
}

.hero-slide:nth-child(6) {
    animation-delay: 42.5s;
    z-index: 2;
}

.hero-slide:nth-child(7) {
    animation-delay: 51s;
    z-index: 1;
}

@keyframes hero-slider {
    0% {
        opacity: 0;
    }
    2% {
        opacity: 1;
    }
    11% {
        opacity: 1;
    }
    13% {
        opacity: 0;
    }
    100% {
        opacity: 0;
    }
}

/* Hero Overlay */
.hero-overlay {
    position: absolute;
    inset: 0;
    background: transparent;
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 64rem;
    margin: 0 auto;
}

.hero-subtitle {
    display: inline-block;
    margin-bottom: 2rem;
}

.hero-subtitle p {
    color: var(--accent-color);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-title {
    font-size: 3.75rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 2rem;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8), 0 0 20px rgba(0, 0, 0, 0.5);
}

/* Japanese language specific styles */
html[lang="ja"] .hero-title {
    font-size: 2.8rem;
    line-height: 1.2;
}

/* Japanese font size adjustments for better line fitting */
html[lang="ja"] .hero-description {
    font-size: 1.1rem;
    line-height: 1.5;
}

html[lang="ja"] .solution-quote p {
    font-size: 1rem;
    line-height: 1.4;
}

html[lang="ja"] .producer .section-description {
    font-size: 1.1rem;
    line-height: 1.5;
}

html[lang="ja"] .section-description {
    font-size: 1.1rem;
    line-height: 1.5;
}

.hero-title-accent {
    color: var(--accent-color);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--gray-200);
    max-width: 48rem;
    margin: 0 auto 2rem;
    line-height: 1.6;
    text-shadow: 1px 1px 6px rgba(0, 0, 0, 0.8), 0 0 15px rgba(0, 0, 0, 0.5);
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    margin-bottom: 3rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 32rem;
    margin: 0 auto;
    padding-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

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

.hero-stat-number {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.7);
}

.hero-stat-label {
    font-size: 0.875rem;
    color: var(--gray-300);
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.7);
}

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

.hero-scroll-indicator {
    width: 1.5rem;
    height: 2.5rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 1rem;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 0.5rem;
}

.hero-scroll-dot {
    width: 0.25rem;
    height: 0.75rem;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 0.125rem;
}

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

/* Empathy Section */
.empathy {
    padding: 5rem 0;
    background-color: var(--light-bg);
}

.empathy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.empathy-item {
    background-color: var(--white);
    padding: 0;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.empathy-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.empathy-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background-color: var(--gray-200);
}

.empathy-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.empathy-item:hover .empathy-image img {
    transform: scale(1.05);
}

.empathy-icon {
    flex-shrink: 0;
    width: 3rem;
    height: 3rem;
    background-color: rgba(230, 126, 34, 0.1);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.empathy-icon i {
    color: var(--accent-color);
    font-size: 1.5rem;
}

.empathy-text {
    padding: 1.5rem;
}

.empathy-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.empathy-text p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 1rem;
}

.empathy-transition {
    text-align: center;
}

.empathy-transition-content {
    display: inline-block;
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.empathy-transition-content p {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin: 0;
}

/* Solution Section */
.solution {
    padding: 5rem 0;
    background-color: var(--white);
}

.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.solution-left {
    padding-right: 2rem;
}

.solution-image {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.solution-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.solution-image img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

.solution-quote {
    background-color: var(--light-bg);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--accent-color);
    margin-top: 2rem;
}

.solution-quote p {
    font-size: 1.125rem;
    color: var(--text-primary);
    font-style: italic;
    margin: 0;
}

.solution-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.solution-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.solution-item:hover {
    background-color: var(--light-bg);
}

.solution-item i {
    color: var(--accent-color);
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.solution-item-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.solution-item-content p {
    color: var(--text-secondary);
    margin: 0;
}

/* Producer Section */
.producer {
    padding: 5rem 0;
    background-image: url('banner.jpeg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--white);
    position: relative;
}

.producer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 0;
}

.producer .container {
    position: relative;
    z-index: 1;
}

.producer .section-subtitle {
    color: var(--accent-color);
}

.producer .section-title {
    color: var(--white);
}

.producer .section-description {
    color: var(--gray-300);
}

.producer-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.producer-card {
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background-color: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.producer-card-lkc {
    background: linear-gradient(135deg, rgba(230, 126, 34, 0.2) 0%, rgba(230, 126, 34, 0.05) 100%);
    border: 2px solid var(--accent-color);
}

.producer-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.producer-card-header i {
    font-size: 2rem;
    color: var(--gray-400);
}

.producer-card-lkc .producer-card-header i {
    color: var(--accent-color);
}

.producer-card-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-300);
}

.producer-card-lkc .producer-card-header h3 {
    color: var(--white);
}

.producer-card-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.producer-card-list li {
    color: var(--gray-400);
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.producer-card-list-lkc li {
    color: var(--white);
}

.check-mark {
    color: var(--accent-color);
    font-weight: 600;
}

.producer-principle {
    text-align: center;
}

.producer-principle-content {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background-color: rgba(230, 126, 34, 0.1);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    border-radius: 2rem;
    border: 1px solid rgba(230, 126, 34, 0.3);
}

.producer-principle-content i {
    color: var(--accent-color);
    font-size: 1.5rem;
}

.producer-principle-content p {
    font-size: 1.125rem;
    margin: 0;
}

/* Process Section - Connected Tree Structure */
.process {
    padding: 5rem 0;
    background-color: var(--light-bg);
}

.process-timeline-tree {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.process-step-tree {
    display: flex;
    align-items: center;
    gap: 2rem;
    position: relative;
    width: 100%;
}

.process-step-tree:nth-child(odd) {
    flex-direction: row;
}

.process-step-tree:nth-child(even) {
    flex-direction: row-reverse;
}

.process-step-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    flex: 1;
    max-width: 400px;
    border: 2px solid transparent;
}

.process-step-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--accent-color);
}

.process-step-icon {
    flex-shrink: 0;
    width: 3.5rem;
    height: 3.5rem;
    background-color: var(--primary-color);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.process-step-icon i {
    color: var(--white);
    font-size: 1.75rem;
}

.process-step-text {
    flex: 1;
}

.process-step-number {
    font-size: 0.875rem;
    color: var(--accent-color);
    font-weight: 600;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.process-step-text h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.process-step-text p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.process-step-number-circle {
    flex-shrink: 0;
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 2;
    margin: 0 auto;
    border: 4px solid var(--white);
}

/* Central Connecting Line */
.process-timeline-tree::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, 
        var(--accent-color) 0%, 
        var(--accent-color) 20%, 
        var(--accent-color) 40%, 
        var(--accent-color) 60%, 
        var(--accent-color) 80%, 
        var(--accent-color) 100%);
    transform: translateX(-50%);
    z-index: 1;
    border-radius: 2px;
}

/* Horizontal Connection Lines */
.process-step-tree::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2rem;
    height: 2px;
    background-color: var(--accent-color);
    transform: translateY(-50%);
    z-index: 1;
}

.process-step-tree:nth-child(odd)::before {
    right: calc(50% + 2.5rem);
    left: auto;
}

.process-step-tree:nth-child(even)::before {
    left: calc(50% + 2.5rem);
    right: auto;
}

/* Enhanced Visual Connections */
.process-step-card::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 0;
    height: 0;
    border-left: 8px solid var(--accent-color);
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    transform: translateY(-50%);
    z-index: 3;
}

.process-step-tree:nth-child(odd) .process-step-card::after {
    right: -8px;
}

.process-step-tree:nth-child(even) .process-step-card::after {
    left: -8px;
    transform: translateY(-50%) rotate(180deg);
}

.process-cta {
    text-align: center;
    margin-top: 4rem;
}

.process-cta-content {
    display: inline-block;
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.process-cta-content p {
    margin: 0 0 1rem 0;
    color: var(--text-secondary);
}

.process-cta-content p:last-child {
    margin-bottom: 0;
    color: var(--text-primary);
}

/* Case Studies Section - Beautiful Cards */
.case-studies {
    padding: 5rem 0;
    background-color: var(--white);
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.case-study-card {
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    padding: 2rem;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.case-study-card:hover {
    box-shadow: 0 10px 25px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    transform: translateY(-2px);
}

.case-study-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.case-study-icon {
    width: 3rem;
    height: 3rem;
    background-color: rgba(230, 126, 34, 0.15);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.case-study-icon i {
    color: var(--accent-color);
    font-size: 1.25rem;
}

.case-study-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.case-study-industry {
    font-size: 0.875rem;
    color: var(--accent-color);
    font-weight: 600;
}

.case-study-separator {
    color: var(--gray-400);
    font-size: 0.875rem;
}

.case-study-region {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.case-study-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 1rem 0;
    line-height: 1.3;
}

.case-study-description {
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.case-study-outcomes {
    margin-top: 1.5rem;
}

.case-study-outcomes-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.case-study-outcomes-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.case-study-outcomes-list li {
    font-size: 0.875rem;
    color: var(--gray-600);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    line-height: 1.4;
}

.check-mark {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 0.875rem;
    width: 1rem;
    text-align: center;
}

/* Case Studies Responsive */
@media (max-width: 768px) {
    .case-studies-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .case-study-card {
        padding: 1.5rem;
    }
    
    .case-study-title {
        font-size: 1.25rem;
    }
    
    .case-study-description {
        font-size: 0.9rem;
    }
}

.case-studies-disclaimer {
    text-align: center;
}

.case-studies-disclaimer p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    max-width: 32rem;
    margin: 0 auto;
}

/* Team Section */
.team {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
}

.team .section-subtitle {
    color: var(--accent-color);
}

.team .section-title {
    color: var(--white);
}

.team .section-description {
    color: var(--gray-300);
}

.team-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.team-highlight {
    text-align: center;
}

.team-highlight-icon {
    width: 4rem;
    height: 4rem;
    background-color: rgba(230, 126, 34, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.team-highlight-icon i {
    color: var(--accent-color);
    font-size: 2rem;
}

.team-highlight h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.team-highlight p {
    font-size: 0.875rem;
    color: var(--gray-300);
}

.team-philosophy {
    background-color: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 3rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 3rem;
}

.team-philosophy-content {
    max-width: 48rem;
    margin: 0 auto;
    text-align: center;
}

.team-philosophy-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.team-philosophy-content p {
    font-size: 1.125rem;
    color: var(--gray-300);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.team-philosophy-content p:last-child {
    margin-bottom: 0;
}

.team-affiliations {
    text-align: center;
}

.team-affiliations p {
    font-size: 0.875rem;
    color: var(--gray-400);
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background-color: var(--light-bg);
}

.contact-main {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 3rem;
}

.contact-info {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-info-header {
    text-align: center;
}

.contact-info-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.contact-info-header p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
    text-align: center;
}

.contact-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.contact-detail {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
    padding: 1.5rem;
    background-color: var(--white);
    border-radius: var(--border-radius);
    width: 100%;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.contact-detail:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.contact-hours-card {
    grid-column: span 1;
}

.contact-detail-icon {
    width: 3rem;
    height: 3rem;
    background-color: rgba(230, 126, 34, 0.1);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin: 0 auto;
}

.contact-detail-icon i {
    color: var(--accent-color);
    font-size: 1.5rem;
}

.contact-detail-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
}

.contact-detail-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    text-align: center;
}

.contact-detail-link {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.contact-detail-link:hover {
    color: var(--accent-color);
}

.contact-detail-text {
    color: var(--text-primary);
    margin: 0;
    text-align: center;
}

.line-contact {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.line-qr-code {
    margin: 0 auto !important;
}

.contact-detail-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
}

.contact-hours-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
    width: 100%;
}

.contact-form-container {
    background-color: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-disclaimer {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
    margin: 0;
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 3rem 0;
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-company h3 {
    font-size: 1.25rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.footer-company-logo {
    max-width: 200px;
    height: auto;
    margin-bottom: 1rem;
    display: block;
}

.footer-company p {
    color: var(--gray-300);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social-link {
    width: 2.5rem;
    height: 2.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.footer-social-link:hover {
    background-color: var(--accent-color);
}

.footer-links h4 {
    margin-bottom: 1rem;
}

.footer-links-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links-list a {
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links-list a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--gray-400);
    margin: 0;
}

.footer-legal {
    display: flex;
    gap: 1.5rem;
}

.footer-legal a {
    font-size: 0.875rem;
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition);
}

.footer-legal a:hover {
    color: var(--accent-color);
}

/* Footer Brand */
.footer-brand {
    text-align: center;
    margin-top: 3rem;
    width: 100%;
    overflow: hidden;
    max-width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-logo-image {
    height: 4rem;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-brand-name {
    font-size: clamp(28px, 5vw, 80px);
    font-weight: 700;
    color: var(--white);
    margin: 0;
    letter-spacing: -0.02em;
    line-height: 1.1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
    display: block;
    text-align: center;
    max-width: 100%;
}

/* Toast Notification */
.toast {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 1rem 1.5rem;
    display: none;
    align-items: center;
    gap: 0.75rem;
    z-index: 1001;
    animation: slideIn 0.3s ease;
}

.toast.show {
    display: flex;
}

.toast-content i {
    color: #10b981;
    font-size: 1.25rem;
}

.toast-message {
    color: var(--text-primary);
    font-weight: 500;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    /* Container - Balanced margins */
    .container {
        padding: 0 1.25rem;
    }

    /* Navigation */
    .nav-desktop {
        display: none;
    }

    .nav-mobile-toggle {
        display: block;
    }

    /* Hero Section */
    .hero {
        padding: 8rem 0 3rem 0;
    }

    .hero-title {
        font-size: 2.5rem;
        line-height: 1.2;
    }

    /* Japanese language specific styles for mobile */
    html[lang="ja"] .hero-title {
        font-size: 2rem;
        line-height: 1.3;
    }

    .hero-subtitle {
        font-size: 1.125rem;
        margin-bottom: 2rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-top: 2rem;
    }

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

    /* Typography */
    .section-title {
        font-size: 2rem;
        line-height: 1.3;
    }

    .section-description {
        font-size: 1.125rem;
    }

    /* Empathy Section */
    .empathy-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .empathy-item {
        flex-direction: column;
    }
    
    .empathy-image {
        height: 200px;
    }
    
    .empathy-text {
        padding: 1.25rem;
    }

    /* Solution Section */
    .solution-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .solution-left {
        padding-right: 0;
    }

    .solution-features {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    /* Producer Explainer */
    .producer-comparison {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .producer-card {
        padding: 1.5rem;
    }

    /* Process Section */
    .process-step-tree {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .process-step-card {
        max-width: 100%;
        padding: 1.5rem;
    }

    .process-step-tree::before {
        display: none;
    }

    .process-step-card::after {
        display: none;
    }

    .process-timeline-tree::before {
        display: none;
    }

    .process-step-number-circle {
        margin: 0 auto 1rem;
    }

    /* Case Studies */
    .case-studies-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .case-study-card {
        padding: 1.5rem;
    }
    
    .case-study-title {
        font-size: 1.25rem;
    }
    
    .case-study-description {
        font-size: 0.9rem;
    }

    /* Team Section */
    .team-highlights {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .team-philosophy {
        padding: 2rem;
    }

    /* Contact Section */
    .contact-main {
        flex-direction: column;
        gap: 2rem;
    }

    .contact-details {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .contact-hours-card {
        grid-column: span 1;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .form-group {
        margin-bottom: 1rem;
    }

    /* Footer */
    .footer-main {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .footer-legal {
        flex-wrap: wrap;
        justify-content: center;
    }

    .footer-brand-name {
        font-size: clamp(24px, 5vw, 45px);
    }
    
    .footer-logo-image {
        height: 3rem;
    }

    /* Toast */
    .toast {
        top: 1rem;
        right: 1rem;
        left: 1rem;
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    /* Container - Balanced margins for small mobile */
    .container {
        padding: 0 1rem;
    }
    
    .footer-brand-name {
        font-size: clamp(20px, 5vw, 28px);
        letter-spacing: -0.005em;
    }
    
    .footer-logo-image {
        height: 2.5rem;
    }

    /* Typography */
    .hero-title {
        font-size: 2rem;
        line-height: 1.1;
    }

    /* Japanese language specific styles for small mobile */
    html[lang="ja"] .hero-title {
        font-size: 1.6rem;
        line-height: 1.4;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.75rem;
        line-height: 1.2;
    }

    .section-description {
        font-size: 1rem;
    }

    /* Buttons */
    .btn-lg {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }

    .btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
    }

    /* Hero Section */
    .hero {
        padding: 7rem 0 2rem 0;
    }

    .hero-stats {
        gap: 0.75rem;
    }

    .hero-stat-number {
        font-size: 1.5rem;
    }

    .hero-stat-label {
        font-size: 0.8rem;
    }

    /* Sections */
    .empathy-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .empathy-item {
        padding: 0;
    }
    
    .empathy-image {
        height: 180px;
    }
    
    .empathy-text {
        padding: 1rem;
    }

    .empathy-icon {
        width: 2.5rem;
        height: 2.5rem;
    }

    .empathy-icon i {
        font-size: 1.25rem;
    }

    /* Solution Section */
    .solution-features {
        gap: 0.75rem;
    }

    .solution-feature {
        padding: 1rem;
    }

    /* Producer Cards */
    .producer-card {
        padding: 1rem;
    }

    .producer-icon {
        width: 2.5rem;
        height: 2.5rem;
    }

    .producer-icon i {
        font-size: 1.25rem;
    }

    /* Process Section */
    .process-step-card {
        padding: 1rem;
    }

    .process-step-icon {
        width: 2.5rem;
        height: 2.5rem;
    }

    .process-step-icon i {
        font-size: 1rem;
    }

    .process-step-number-circle {
        width: 3rem;
        height: 3rem;
        font-size: 1rem;
    }

    /* Case Studies */
    .case-study-card {
        padding: 1rem;
    }

    .case-study-icon {
        width: 2.5rem;
        height: 2.5rem;
    }

    .case-study-icon i {
        font-size: 1rem;
    }

    .case-study-title {
        font-size: 1.125rem;
    }

    .case-study-description {
        font-size: 0.85rem;
    }

    /* Team Section */
    .team-highlights {
        gap: 1rem;
    }

    .team-highlight-icon {
        width: 3rem;
        height: 3rem;
    }

    .team-highlight-icon i {
        font-size: 1.5rem;
    }

    .team-philosophy {
        padding: 1.5rem;
    }

    /* Contact Section */
    .contact-form {
        padding: 1rem;
    }

    .form-group {
        margin-bottom: 0.75rem;
    }

    .form-input,
    .form-textarea {
        padding: 0.75rem;
        font-size: 0.9rem;
    }

    /* Footer */
    .footer-brand-name {
        font-size: clamp(18px, 6vw, 24px);
        line-height: 1.1;
        letter-spacing: -0.01em;
    }
    
    .footer-logo-image {
        height: 2rem;
    }

    .footer-main {
        gap: 1.5rem;
    }

    .footer-section h3 {
        font-size: 1rem;
    }

    .footer-section p,
    .footer-section a {
        font-size: 0.8rem;
    }

    /* Navigation */
    .nav-logo {
        display: flex;
        align-items: center;
    }
    
    .logo-image {
        height: 2.5rem;
    }

    .nav-mobile {
        padding: 1rem;
    }

    .nav-mobile-link {
        padding: 0.75rem 0;
        font-size: 0.9rem;
    }
    
    .language-toggle {
        margin: 0.5rem 1rem;
        font-size: 0.8rem;
        padding: 0.5rem 0.75rem;
    }
}

/* Mobile Touch Optimizations */
@media (max-width: 768px) {
    /* Ensure touch targets are at least 44px */
    .btn,
    .nav-link,
    .nav-mobile-link,
    .nav-mobile-toggle {
        min-height: 44px;
        min-width: 44px;
    }

    /* Improve touch scrolling */
    .nav-mobile {
        -webkit-overflow-scrolling: touch;
    }

    /* Prevent zoom on form inputs */
    .form-input,
    .form-textarea {
        font-size: 16px;
    }
}

/* Additional responsive adjustments */
@media (min-width: 769px) {
    .hero-cta {
        flex-direction: row;
    }
    
    .footer-brand-name {
        font-size: clamp(32px, 6vw, 60px);
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 4.5rem;
    }

    .section-title {
        font-size: 3rem;
    }
    
    .footer-brand-name {
        font-size: clamp(40px, 7vw, 80px);
    }
}

@media (min-width: 1440px) {
    .footer-brand-name {
        font-size: clamp(50px, 8vw, 90px);
    }
}

@media (min-width: 1920px) {
    .footer-brand-name {
        font-size: clamp(60px, 10vw, 100px);
    }
}