:root {
    --primary-color: #1e3a8a; /* 群青色 */
    --primary-dark: #1e2a5a;
    --primary-light: #3b5998;
    --accent-color: #fbbf24; /* 黄色 */
    --accent-hover: #f59e0b;
    --white: #ffffff;
    --off-white: #f3f4f6;
    --section-bg: linear-gradient(135deg, #f0f4ff 0%, #e8efff 100%);
    --gray-light: #e5e7eb;
    --gray-medium: #9ca3af;
    --gray-dark: #374151;
    --black: #111827;
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(30, 58, 138, 0.2);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo a {
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo .accent {
    color: var(--accent-color);
    margin-left: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--gray-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s;
}

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

.cta-btn {
    background: var(--gradient-accent);
    color: var(--primary-dark) !important;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-btn::after {
    display: none !important;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

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

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.85;
}

.particles::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23fbbf24' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    animation: float 20s linear infinite;
}

@keyframes float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-60px, -60px); }
}

.gradient-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, transparent 20%, rgba(30, 58, 138, 0.6) 100%);
}

.hero-content {
    text-align: center;
    color: var(--white);
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
    animation: slideIn 0.8s ease-out backwards;
}

.title-line:nth-child(2) {
    animation-delay: 0.2s;
}

.accent-text {
    color: var(--accent-color);
    text-shadow: 0 0 30px rgba(251, 191, 36, 0.5);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    margin-bottom: 3rem;
    opacity: 0.95;
    font-weight: 300;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--primary-dark);
    box-shadow: 0 10px 30px rgba(251, 191, 36, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(251, 191, 36, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border: 2px solid var(--white);
    backdrop-filter: blur(10px);
}

.product-section .btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.product-section .btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-3px);
}

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

.btn-outline:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-3px);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
}

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

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

.scroll-indicator span {
    color: var(--white);
    font-size: 0.875rem;
    letter-spacing: 2px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: var(--white);
    margin: 10px auto 0;
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    width: 100%;
    height: 40px;
    background: linear-gradient(to bottom, transparent, var(--accent-color));
    animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
    0% { top: -40px; }
    100% { top: 40px; }
}

/* Features Section */
.features {
    padding: 5rem 0;
    background: var(--section-bg);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.title-en {
    display: block;
    color: var(--accent-color);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.title-ja {
    display: block;
    color: var(--primary-color);
    font-size: 2.5rem;
    font-weight: 800;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 4px 15px rgba(30, 58, 138, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.2);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    /* Initial state is handled by JavaScript */
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(30, 58, 138, 0.15);
    border-color: var(--accent-color);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: 0 5px 15px rgba(251, 191, 36, 0.3);
}

.feature-icon svg {
    width: 30px;
    height: 30px;
    color: var(--white);
}

.feature-card h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--gray-medium);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--gray-dark);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.feature-link {
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: var(--transition);
}

.feature-link:hover {
    color: var(--accent-hover);
    transform: translateX(5px);
}

/* Innovation Section */
.innovation {
    padding: 5rem 0;
    background: var(--white);
}

.innovation-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.lead {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.innovation-list {
    list-style: none;
}

.innovation-list li {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1rem;
    border-radius: 10px;
    transition: var(--transition);
}

.innovation-list li:hover {
    background: var(--off-white);
}

.number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gradient-accent);
    color: var(--primary-dark);
    font-weight: 700;
    border-radius: 50%;
    flex-shrink: 0;
}

.innovation-list h4 {
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.innovation-list p {
    color: var(--gray-medium);
    font-size: 0.9rem;
}

.innovation-visual {
    position: relative;
    height: 400px;
}

.floating-cards {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotateY(0deg); }
    to { transform: rotateY(360deg); }
}

.float-card {
    position: absolute;
    width: 150px;
    height: 100px;
    background: var(--gradient-primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
}

.card-1 {
    top: 50px;
    left: 50px;
    background: var(--gradient-accent);
    color: var(--primary-dark);
    animation: float1 4s ease-in-out infinite;
}

.card-2 {
    top: 150px;
    right: 50px;
    animation: float2 5s ease-in-out infinite;
}

.card-3 {
    bottom: 100px;
    left: 100px;
    animation: float3 6s ease-in-out infinite;
}

.card-4 {
    bottom: 50px;
    right: 100px;
    background: var(--gradient-accent);
    color: var(--primary-dark);
    animation: float4 4.5s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translate(0, 0) rotate(5deg); }
    50% { transform: translate(10px, -20px) rotate(-5deg); }
}

@keyframes float2 {
    0%, 100% { transform: translate(0, 0) rotate(-5deg); }
    50% { transform: translate(-10px, -15px) rotate(5deg); }
}

@keyframes float3 {
    0%, 100% { transform: translate(0, 0) rotate(3deg); }
    50% { transform: translate(15px, -10px) rotate(-3deg); }
}

@keyframes float4 {
    0%, 100% { transform: translate(0, 0) rotate(-3deg); }
    50% { transform: translate(-5px, -25px) rotate(3deg); }
}

/* CTA Section */
.cta-section {
    padding: 5rem 0;
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: var(--primary-dark);
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-brand .accent {
    color: var(--accent-color);
}

.footer-brand p {
    opacity: 0.8;
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1rem;
}

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

.footer-column a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
    display: inline-block;
    padding: 0.25rem 0;
}

.footer-column a:hover {
    opacity: 1;
    color: var(--accent-color);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

/* Floating Contact Button */
.floating-contact {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 999;
}

.floating-btn {
    width: 60px;
    height: 60px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-dark);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    text-decoration: none;
}

.floating-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.floating-btn svg {
    width: 24px;
    height: 24px;
}

/* Page Hero */
.page-hero {
    position: relative;
    padding: 10rem 0 5rem;
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
    overflow: hidden;
}

.page-hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

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

.page-title {
    margin-bottom: 1rem;
    color: var(--white);
    opacity: 1;
}

.page-title .title-en,
.page-title .title-ja {
    color: var(--white);
    opacity: 1;
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--white);
    opacity: 1;
}

/* Product Sections */
.product-section {
    padding: 5rem 0;
    background: var(--white);
}

.product-section:nth-child(even) {
    background: var(--off-white);
}

.product-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.product-section.reverse .product-content {
    direction: rtl;
}

.product-section.reverse .product-info {
    direction: ltr;
}

.product-section.reverse .product-visual {
    direction: ltr;
}

.product-label {
    color: var(--accent-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.product-title {
    color: var(--primary-color);
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.product-description {
    font-size: 1.125rem;
    color: var(--gray-dark);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.product-features {
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.feature-icon-wrapper {
    width: 50px;
    height: 50px;
    background: var(--gradient-accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon-wrapper svg {
    width: 24px;
    height: 24px;
    color: var(--primary-dark);
}

.feature-text h4 {
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.feature-text p {
    color: var(--gray-medium);
    font-size: 0.9rem;
}

/* Product Visuals */
.product-mockup {
    position: relative;
    width: 100%;
    height: 400px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
}

.mockup-screen {
    background: var(--white);
    width: 80%;
    height: 80%;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.voice-wave {
    display: flex;
    gap: 5px;
    margin-bottom: 2rem;
}

.voice-wave span {
    width: 4px;
    height: 40px;
    background: var(--accent-color);
    border-radius: 2px;
    animation: wave 1s ease-in-out infinite;
}

.voice-wave span:nth-child(2) { animation-delay: 0.1s; }
.voice-wave span:nth-child(3) { animation-delay: 0.2s; }
.voice-wave span:nth-child(4) { animation-delay: 0.3s; }
.voice-wave span:nth-child(5) { animation-delay: 0.4s; }

@keyframes wave {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(1.5); }
}

.mockup-text {
    color: var(--primary-color);
    font-size: 1.25rem;
    font-weight: 600;
}

.video-showcase {
    position: relative;
    width: 100%;
    height: 400px;
}

.video-frame {
    width: 100%;
    height: 350px;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.video-frame video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
}

.play-button {
    width: 80px;
    height: 80px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    z-index: 1;
}

.play-button:hover {
    transform: scale(1.1);
}

.play-button svg {
    width: 30px;
    height: 30px;
    color: var(--primary-color);
    margin-left: 5px;
}

.video-stats {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.video-stats span {
    padding: 0.5rem 1rem;
    background: var(--gradient-accent);
    color: var(--primary-dark);
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.875rem;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 2rem;
    background: var(--gradient-primary);
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
}

.skill-tag {
    padding: 0.75rem 1.5rem;
    background: var(--white);
    color: var(--primary-color);
    border-radius: 25px;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.skill-tag:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: var(--accent-color);
    color: var(--primary-dark);
}

.dev-process {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 3rem;
    background: var(--gradient-primary);
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
}

.process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--white);
    opacity: 0.7;
    transition: var(--transition);
}

.process-step.active {
    opacity: 1;
    transform: scale(1.1);
}

.step-number {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    border: 2px solid var(--white);
}

.process-step.active .step-number {
    background: var(--accent-color);
    color: var(--primary-dark);
    border-color: var(--accent-color);
}

.step-label {
    font-size: 0.875rem;
    font-weight: 600;
}

.process-line {
    flex: 1;
    height: 2px;
    background: rgba(255, 255, 255, 0.3);
    margin: 0 1rem;
}

/* About Page Styles */
.about-message {
    padding: 5rem 0;
    background: var(--white);
}

.message-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.rotating-cube {
    width: 300px;
    height: 300px;
    margin: 0 auto;
    position: relative;
    transform-style: preserve-3d;
    animation: rotateCube 10s linear infinite;
}

@keyframes rotateCube {
    from { transform: rotateX(0deg) rotateY(0deg); }
    to { transform: rotateX(360deg) rotateY(360deg); }
}

.cube-face {
    position: absolute;
    width: 200px;
    height: 200px;
    background: var(--gradient-accent);
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
    border: 2px solid var(--white);
    opacity: 0.9;
}

.cube-face.front { transform: translateZ(100px); }
.cube-face.back { transform: rotateY(180deg) translateZ(100px); }
.cube-face.right { transform: rotateY(90deg) translateZ(100px); }
.cube-face.left { transform: rotateY(-90deg) translateZ(100px); }
.cube-face.top { transform: rotateX(90deg) translateZ(100px); }
.cube-face.bottom { transform: rotateX(-90deg) translateZ(100px); }

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

.strength-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.strength-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.strength-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 3rem;
    font-weight: 900;
    color: var(--accent-color);
    opacity: 0.2;
}

.strength-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.strength-icon svg {
    width: 30px;
    height: 30px;
    color: var(--white);
}

.company-values {
    padding: 5rem 0;
    background: var(--off-white);
}

.values-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.value-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 15px;
    transition: var(--transition);
}

.value-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.value-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.value-icon svg {
    width: 24px;
    height: 24px;
    color: var(--primary-dark);
}

.value-content h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.value-content p {
    color: var(--gray-medium);
    font-size: 0.9rem;
}

.company-info {
    padding: 5rem 0;
    background: var(--white);
}

.info-table {
    background: var(--off-white);
    border-radius: 20px;
    padding: 2rem;
    overflow: hidden;
}

.info-row {
    display: grid;
    grid-template-columns: 200px 1fr;
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-light);
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 600;
    color: var(--primary-color);
}

.info-value {
    color: var(--gray-dark);
    line-height: 1.6;
}

/* Recruit Page Styles */
.ideal-candidate {
    padding: 5rem 0;
    background: var(--white);
}

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

.candidate-card {
    text-align: center;
    padding: 2rem;
    background: var(--off-white);
    border-radius: 20px;
    transition: var(--transition);
}

.candidate-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    background: var(--white);
}

.candidate-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.candidate-icon svg {
    width: 40px;
    height: 40px;
    color: var(--white);
}

.job-positions {
    padding: 5rem 0;
    background: var(--off-white);
}

.positions-accordion {
    max-width: 900px;
    margin: 0 auto;
}

.position-item {
    background: var(--white);
    border-radius: 15px;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.position-item:hover {
    box-shadow: var(--shadow-md);
}

.position-header {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.position-info h3 {
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.position-info p {
    color: var(--gray-medium);
    font-size: 0.9rem;
}

.position-toggle {
    width: 40px;
    height: 40px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.position-toggle svg {
    width: 20px;
    height: 20px;
    color: var(--primary-dark);
    transition: var(--transition);
}

.position-item.open .position-toggle svg {
    transform: rotate(180deg);
}

.position-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.position-item.open .position-content {
    max-height: 600px;
}

.position-details {
    padding: 0 2rem 2rem;
}

.detail-section {
    margin-bottom: 1.5rem;
}

.detail-section h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.detail-section ul {
    list-style: none;
    padding-left: 1rem;
}

.detail-section li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--gray-dark);
}

.detail-section li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.work-environment {
    padding: 5rem 0;
    background: var(--white);
}

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

.env-card {
    text-align: center;
    padding: 2rem;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 20px;
    transition: var(--transition);
}

.env-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.env-icon {
    width: 60px;
    height: 60px;
    background: var(--white);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.env-icon svg {
    width: 30px;
    height: 30px;
    color: var(--primary-color);
}

.env-card h3 {
    margin-bottom: 0.5rem;
}

.env-card p {
    opacity: 0.9;
    font-size: 0.9rem;
}

.benefits {
    padding: 5rem 0;
    background: var(--off-white);
}

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

.benefit-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 15px;
    transition: var(--transition);
}

.benefit-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.benefit-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.benefit-icon svg {
    width: 24px;
    height: 24px;
    color: var(--primary-dark);
}

.benefit-content h4 {
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.benefit-content p {
    color: var(--gray-medium);
    font-size: 0.9rem;
}

.application-process {
    padding: 5rem 0;
    background: var(--white);
}

.process-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto 3rem;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 50px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gray-light);
}

.timeline-item {
    position: relative;
    padding-left: 100px;
    margin-bottom: 3rem;
}

.timeline-marker {
    position: absolute;
    left: 30px;
    top: 0;
    width: 40px;
    height: 40px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--primary-dark);
}

.timeline-content h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--gray-dark);
    line-height: 1.6;
}

.application-notes {
    background: var(--off-white);
    padding: 2rem;
    border-radius: 20px;
}

.application-notes h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.notes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.note-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.note-item p {
    color: var(--gray-medium);
    font-size: 0.9rem;
}

/* Contact Page Styles */
.contact-types {
    padding: 5rem 0;
    background: var(--white);
}

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

.contact-card {
    text-align: center;
    padding: 2rem;
    background: var(--off-white);
    border-radius: 20px;
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    background: var(--white);
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.contact-icon svg {
    width: 40px;
    height: 40px;
    color: var(--white);
}

.contact-form-section {
    padding: 5rem 0;
    background: var(--off-white);
}

.form-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.form-title {
    color: var(--primary-color);
    margin-bottom: 2rem;
    text-align: center;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-light);
    border-radius: 10px;
    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(30, 58, 138, 0.1);
}

.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.form-submit {
    text-align: center;
    margin-top: 2rem;
}

.submit-arrow {
    width: 20px;
    height: 20px;
    transition: var(--transition);
}

.btn:hover .submit-arrow {
    transform: translateX(5px);
}

.form-success {
    text-align: center;
    padding: 3rem;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.success-icon svg {
    width: 40px;
    height: 40px;
    color: var(--primary-dark);
}

.contact-info {
    max-width: 800px;
    margin: 3rem auto 0;
}

.contact-info h3 {
    color: var(--primary-color);
    margin-bottom: 2rem;
}

.info-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 15px;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.info-item:hover {
    box-shadow: var(--shadow-md);
}

.info-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-icon svg {
    width: 24px;
    height: 24px;
    color: var(--white);
}

.info-content h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.info-content p {
    color: var(--gray-medium);
    margin-bottom: 0.5rem;
}

.calendar-link,
.phone-link,
.email-link {
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.calendar-link:hover,
.phone-link:hover,
.email-link:hover {
    color: var(--accent-hover);
}

.response-time {
    background: var(--off-white);
    padding: 1.5rem;
    border-radius: 15px;
    margin-top: 2rem;
}

.response-time p {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.response-time ul {
    list-style: none;
    padding-left: 1rem;
}

.response-time li {
    color: var(--gray-dark);
    padding: 0.25rem 0;
}

.faq-section {
    padding: 5rem 0;
    background: var(--white);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--off-white);
    border-radius: 15px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-question h4 {
    color: var(--primary-color);
    flex: 1;
}

.faq-toggle {
    width: 30px;
    height: 30px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.faq-toggle svg {
    width: 16px;
    height: 16px;
    color: var(--primary-dark);
    transition: var(--transition);
}

.faq-item.open .faq-toggle svg {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    color: var(--gray-dark);
    line-height: 1.6;
}

/* Mobile break - デフォルトでは非表示 */
.mobile-break {
    display: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    /* スマホ版のみ改行を表示 */
    .mobile-break {
        display: inline;
    }
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        box-shadow: var(--shadow-xl);
        transition: right 0.3s ease;
    }

    .nav-menu.active {
        right: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero-title {
        font-size: 3rem;
    }

    .features-grid,
    .innovation-content,
    .product-content,
    .message-content,
    .footer-content {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .floating-cards {
        transform: scale(0.7);
    }

    /* 受託開発セクションのレイアウト修正 */
    .product-section.reverse .product-content {
        direction: ltr;
    }

    .product-section.reverse .product-info {
        direction: ltr;
    }

    .product-section.reverse .product-visual {
        direction: ltr;
    }
}