:root {
    --primary-color: #ec4899; /* ピンク */
    --primary-dark: #db2777;
    --primary-light: #f9a8d4;
    --accent-color: #fbbf24; /* 黄色 */
    --accent-hover: #f59e0b;
    --success-color: #10b981;
    --white: #ffffff;
    --off-white: #fdf2f8; /* ピンクがかった白 */
    --gray-light: #fce7f3;
    --gray-medium: #9ca3af;
    --gray-dark: #374151;
    --black: #111827;
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    --gradient-hero: linear-gradient(135deg, #f9a8d4 0%, #ec4899 50%, #db2777 100%);
}

* {
    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: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.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;
}

.logo a {
    text-decoration: none;
    display: flex;
    align-items: center;
}

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

.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: all 0.3s ease;
    position: relative;
}

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

.cta-btn {
    background: var(--gradient-accent);
    color: var(--primary-dark) !important;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: 0 4px 6px rgba(251, 191, 36, 0.3);
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(251, 191, 36, 0.4);
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    margin-top: 80px;
    padding: 4rem 0;
    background: var(--gradient-hero);
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    isolation: isolate;
    z-index: 1;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('IT.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.9) 0%, rgba(249, 168, 212, 0.85) 50%, rgba(251, 191, 36, 0.8) 100%);
    z-index: 1;
}

.wave-container {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    z-index: 2;
}

.wave {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 100%;
}

.particles {
    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='0.08'%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;
    z-index: 3;
}

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

.hero-content {
    position: relative;
    z-index: 10;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    background: rgba(251, 191, 36, 0.2);
    color: var(--accent-color);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 900;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.title-main {
    display: block;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-color);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    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: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--white);
    box-shadow: 0 10px 30px rgba(251, 191, 36, 0.3);
    font-weight: 700;
}

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.3);
    color: var(--white);
    border: 2px solid var(--white);
    backdrop-filter: blur(10px);
}

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

.btn-accent {
    background: var(--gradient-accent);
    color: var(--primary-dark);
    border: 2px solid var(--accent-color);
    font-weight: 700;
}

.btn-accent:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(251, 191, 36, 0.3);
}

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

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

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

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn svg {
    width: 20px;
    height: 20px;
}

/* Hero Visual */
.hero-visual {
    position: relative;
}

.phone-mockup {
    width: 320px;
    height: 640px;
    background: var(--white);
    border-radius: 40px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
    padding: 20px;
    position: relative;
    margin: 0 auto;
}

.phone-notch {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 150px;
    height: 25px;
    background: var(--black);
    border-radius: 15px;
}

.phone-screen {
    height: 100%;
    background: #f0f4ff;
    border-radius: 20px;
    padding: 40px 20px 20px;
    overflow: hidden;
}

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

.message {
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
    animation: slideIn 0.5s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.ai {
    flex-direction: row;
}

.message.customer {
    flex-direction: row-reverse;
}

.avatar {
    width: 35px;
    height: 35px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
}

.message.customer .avatar {
    background: var(--gradient-accent);
    color: var(--white);
}

.text {
    max-width: 70%;
    padding: 0.75rem 1rem;
    background: var(--white);
    border-radius: 15px;
    font-size: 0.9rem;
}

.message.customer .text {
    background: var(--primary-color);
    color: var(--white);
}

.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 0.75rem 1rem;
    background: var(--white);
    border-radius: 15px;
    width: fit-content;
    margin-left: 43px;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--gray-medium);
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
    }
    30% {
        transform: translateY(-10px);
    }
}

.floating-badges {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.badge {
    position: absolute;
    padding: 0.75rem 1.5rem;
    background: var(--white);
    border-radius: 50px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--primary-color);
}

.badge-1 {
    top: 20%;
    left: -50px;
    animation: float1 4s ease-in-out infinite;
}

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

.badge-3 {
    bottom: 20%;
    left: -30px;
    animation: float3 6s 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); }
}

/* Problem Section */
.problem {
    padding: 5rem 0 2rem;
    background: var(--off-white);
    position: relative;
    z-index: 2;
}

.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;
}

.section-subtitle {
    text-align: center;
    color: var(--gray-medium);
    font-size: 1.125rem;
    margin-top: 1rem;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.problem-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.problem-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

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

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

.solution-arrow {
    text-align: center;
    margin: 2rem 0;
}

.solution-arrow svg {
    width: 40px;
    height: 40px;
    color: var(--accent-color);
    animation: bounce 2s infinite;
}

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

/* Solution Section */
.solution {
    padding: 5rem 0;
    background: linear-gradient(135deg, #fdf2f8 0%, #fce7f3 100%);
}

.solution-header {
    text-align: center;
    margin-bottom: 2rem;
}

.solution-visual {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-top: 2rem;
}

.solution-center {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.15) 0%, rgba(249, 168, 212, 0.1) 50%, rgba(251, 191, 36, 0.08) 100%);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(236, 72, 153, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 3rem auto 0;
    position: relative;
    box-shadow: 0 20px 60px rgba(236, 72, 153, 0.15);
    z-index: 10;
    animation: float-bubble 6s ease-in-out infinite;
}

@keyframes float-bubble {
    0%, 100% { 
        transform: translateY(0) scale(1);
    }
    25% { 
        transform: translateY(-10px) scale(1.02);
    }
    50% { 
        transform: translateY(5px) scale(0.98);
    }
    75% { 
        transform: translateY(-5px) scale(1.01);
    }
}

.center-logo {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 800;
    text-shadow: 0 2px 4px rgba(236, 72, 153, 0.2);
}

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

.solution-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding: 2rem 0;
}

.feature-item {
    background: var(--white);
    padding: 1.5rem 1rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease backwards;
    animation-delay: calc(var(--index) * 0.1s);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

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

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.feature-item .feature-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

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

.feature-item p {
    color: var(--gray-medium);
    font-size: 0.875rem;
    min-height: 3em;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    flex-direction: column;
}

/* Features Detail Section */
.features-detail {
    padding: 5rem 0;
    background: var(--white);
}

.features-tabs {
    max-width: 1000px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 2px solid var(--gray-light);
    border-radius: 50px;
    color: var(--gray-dark);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.tab-btn.active {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: transparent;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

.content-text h3 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 1rem;
}

.content-text p {
    color: var(--gray-dark);
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.feature-list li {
    padding: 0.5rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--gray-dark);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

/* Visual Elements */
.waveform {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    height: 200px;
}

.wave-bar {
    width: 20px;
    background: var(--gradient-accent);
    border-radius: 10px;
    animation: wave 1s ease-in-out infinite;
    animation-delay: calc(var(--i) * 0.1s);
}

@keyframes wave {
    0%, 100% { height: 40px; }
    50% { height: calc(40px + random() * 80px); }
}

.wave-bar:nth-child(1) { animation-duration: 1.2s; height: 60px; }
.wave-bar:nth-child(2) { animation-duration: 1.1s; height: 100px; }
.wave-bar:nth-child(3) { animation-duration: 1.3s; height: 80px; }
.wave-bar:nth-child(4) { animation-duration: 1s; height: 120px; }
.wave-bar:nth-child(5) { animation-duration: 1.4s; height: 90px; }
.wave-bar:nth-child(6) { animation-duration: 1.2s; height: 110px; }
.wave-bar:nth-child(7) { animation-duration: 1.1s; height: 70px; }
.wave-bar:nth-child(8) { animation-duration: 1.3s; height: 95px; }

.flow-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 2rem;
    background: linear-gradient(135deg, #fdf2f8 0%, #fce7f3 100%);
    border-radius: 20px;
}

.flow-step {
    padding: 1rem 1.5rem;
    background: var(--white);
    border-radius: 50px;
    font-weight: 600;
    color: var(--primary-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.flow-arrow {
    color: var(--accent-color);
    font-size: 1.5rem;
}

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

.icon-item {
    padding: 2rem;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 15px;
    text-align: center;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(30, 58, 138, 0.2);
    transition: all 0.3s ease;
}

.icon-item:hover {
    transform: scale(1.05);
}

.chart-preview {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 1rem;
    height: 200px;
    padding: 2rem;
    background: linear-gradient(135deg, #fdf2f8 0%, #fce7f3 100%);
    border-radius: 20px;
}

.chart-bar {
    width: 30px;
    background: var(--gradient-accent);
    border-radius: 5px 5px 0 0;
    height: var(--height);
    transition: all 0.3s ease;
}

.chart-bar:hover {
    transform: scaleY(1.1);
}

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

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

.benefit-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

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

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

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

.benefit-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent-color);
    margin: 1rem 0;
}

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

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

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--white);
    border: 2px solid var(--gray-light);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.pricing-card.featured {
    border-color: var(--accent-color);
    transform: scale(1.05);
    box-shadow: 0 20px 40px rgba(251, 191, 36, 0.2);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-accent);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.875rem;
}

.plan-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.plan-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
}

.currency {
    font-size: 1.5rem;
    color: var(--gray-medium);
}

.amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
}

.period {
    color: var(--gray-medium);
}

.plan-description {
    color: var(--gray-medium);
    margin-bottom: 2rem;
}

.plan-features {
    list-style: none;
    margin-bottom: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 360px; /* 6項目 × 60px相当 */
}

.plan-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-light);
    color: var(--gray-dark);
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.plan-features li:last-child {
    border-bottom: none;
}

/* Cases Section */
.cases {
    padding: 5rem 0;
    background: linear-gradient(135deg, #fdf2f8 0%, #fce7f3 100%);
}

.cases-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.case-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.case-header {
    background: var(--gradient-primary);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.case-industry {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.875rem;
}

.case-logo {
    color: var(--white);
    font-weight: 700;
}

.case-content {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.case-content h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    min-height: 2.5em;
    display: flex;
    align-items: center;
}

.case-content p {
    color: var(--gray-dark);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex: 1;
    min-height: 4.5em;
}

.case-results {
    display: flex;
    gap: 2rem;
    margin-top: auto;
}

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

.result-label {
    display: block;
    color: var(--gray-medium);
    font-size: 0.875rem;
}

.result-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

/* Demo Section */
.demo {
    padding: 5rem 0;
    background: var(--gradient-primary);
}

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

.demo-text {
    color: var(--white);
}

.demo-text .section-title .title-en {
    color: var(--accent-color);
}

.demo-text .section-title .title-ja {
    color: var(--white);
}

.demo-description {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    line-height: 1.8;
    opacity: 0.9;
}

.demo-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.demo-feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.demo-feature svg {
    width: 20px;
    height: 20px;
    color: var(--accent-color);
}

.demo-feature span {
    color: var(--white);
}

.demo-form {
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

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

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-light);
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-note {
    text-align: center;
    color: var(--gray-medium);
    font-size: 0.875rem;
    margin-top: 1rem;
}

/* FAQ Section */
.faq {
    padding: 5rem 0;
    background: var(--off-white);
}

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

.faq-item {
    background: var(--white);
    border-radius: 15px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

.faq-question h3 {
    color: var(--primary-color);
    font-size: 1.125rem;
    flex: 1;
}

.faq-toggle {
    width: 30px;
    height: 30px;
    background: var(--gradient-accent);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    transition: all 0.3s ease;
}

.faq-item.open .faq-toggle {
    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;
}

/* Final CTA Section */
.final-cta {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    text-align: center;
}

.cta-content h2 {
    color: var(--white);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.25rem;
    margin-bottom: 2rem;
}

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

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

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

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

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

.footer-brand p {
    opacity: 0.8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 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: all 0.3s ease;
    display: inline-block;
    padding: 0.25rem 0;
}

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

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

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
    }

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

    .hamburger {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        margin-top: 3rem;
    }

    .phone-mockup {
        width: 280px;
        height: 560px;
    }

    .floating-badges {
        display: none;
    }

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

    .content-grid {
        grid-template-columns: 1fr;
    }

    .demo-content {
        grid-template-columns: 1fr;
    }

    .cases-slider {
        grid-template-columns: 1fr;
    }

    .pricing-cards {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}