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

body {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    line-height: 1.6;
    color: #333333;
    background: #ffffff;
    padding-top: 70px;
}

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

/* Header */
header {
    background: white;
    padding: 15px 0;
    color: #333;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2em;
    font-weight: bold;
}

.logo a {
    text-decoration: none;
    color: #4A9EFF;
}

.logo-icon img {
    max-width: 100px;
    height: auto;
    alt: "BizteX インテリジェント フロー ロゴ";
}

.logo-text {
    color: #4A9EFF;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    display: flex;
    gap: 25px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: #333;
    text-decoration: none;
    font-size: 0.9em;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #4A9EFF;
}

.header-cta {
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 25px;
    transition: all 0.3s ease;
    margin-left: 10px;
    font-size: 0.9em;
}

.header-cta.primary {
    background: linear-gradient(135deg, #FF6B35 0%, #FF8A50 100%);
}

.header-cta.secondary {
    background: white;
    border: 2px solid #4A9EFF;
    color: #4A9EFF;
}

.header-cta:hover {
    transform: translateY(-2px);
}

.header-cta.primary:hover {
    background: linear-gradient(135deg, #e55a2b 0%, #e6743d 100%);
}

.header-cta.secondary:hover {
    background: #4A9EFF;
    color: white;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #333;
    font-size: 1.5em;
    cursor: pointer;
}

.mobile-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border-top: 1px solid #e0e0e0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.mobile-menu.active {
    display: block;
}

.mobile-menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-menu li {
    border-bottom: 1px solid #e0e0e0;
}

.mobile-menu a {
    display: block;
    padding: 15px 20px;
    color: #333;
    text-decoration: none;
}

.mobile-menu a:hover {
    background: #f8f9fa;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #6BB6FF 0%, #4A90E2 100%);
    color: white;
    padding: 80px 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-left {
    text-align: left;
}

.hero h1 {
    font-size: 3em;
    margin-bottom: 20px;
    font-weight: bold;
}

.hero .subtitle {
    font-size: 1.3em;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-badges {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 40px 0;
}

.badge {
    background: #fff;
    padding: 15px 25px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    font-size: 1.1em;
    text-align: left;
    color: #4A90E2;
}

.hero-cta {
    display: flex;
    gap: 20px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.hero-video {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-video-placeholder {
    width: 100%;
    max-width: 650px;
    height: 400px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

/* Responsive video iframe */
.hero-video-placeholder iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.cta-primary {
    background: linear-gradient(135deg, #FF6B35 0%, #FF8A50 100%);
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 35px;
    font-size: 1.1em;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
    transition: all 0.3s ease;
    display: inline-block;
}

.cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
    background: linear-gradient(135deg, #e55a2b 0%, #e6743d 100%);
}

.cta-secondary {
    background: white;
    color: #4A9EFF;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 35px;
    font-size: 1.1em;
    font-weight: bold;
    border: 2px solid #4A9EFF;
    transition: all 0.3s ease;
    display: inline-block;
}

.cta-secondary:hover {
    background: #4A9EFF;
    color: white;
    transform: translateY(-2px);
}

/* Section Styles */
.section {
    padding: 80px 0;
}

.section-alt {
    background: #03a9f42e;
}

.section h2 {
    font-size: 2.5em;
    text-align: center;
    margin-bottom: 50px;
    color: #333333;
}

.section h3 {
    font-size: 1.8em;
    margin-top: 40px;
    color: #4A9EFF;
}

.text-content {
    font-size: 1.1em;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    text-align: left;
}

.text-content a {
    color: #4A9EFF;
}

/* Features Grid */
.features-grid {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin: 30px 0;
}

.features-grid.horizontal {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.feature-item {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 40px;
    transition: transform 0.3s ease;
}

.features-grid.horizontal .feature-item {
    flex-direction: column;
    text-align: center;
    gap: 20px;
}

.feature-image {
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.feature-image img {
    max-width: 250px;
    max-height: 200px;
    width: 100%;
    height: auto;
    object-fit: contain;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-item:nth-child(even) {
    flex-direction: row-reverse;
}

.features-grid.horizontal .feature-item:nth-child(even) {
    flex-direction: column;
}

.features-grid.horizontal .feature-image {
    margin: 0 auto 20px;
}

.feature-content {
    flex: 1;
}

.feature-content h4 {
    font-size: 1.5em;
    margin-bottom: 15px;
    color: #4A9EFF;
}

/* Core Functions */
.core-functions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin: 50px 0;
}

.function-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    border-left: 5px solid #4A9EFF;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 20px;
}

.function-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #4A9EFF 0%, #3a87e6 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2.5em;
    margin: 0 auto 20px;
    box-shadow: 0 8px 25px rgba(74, 158, 255, 0.3);
}

.function-content {
    flex: 1;
}

.function-title {
    font-size: 1.3em;
    font-weight: bold;
    margin-bottom: 15px;
    color: #4A9EFF;
}

/* Business Cases */
.business-cases {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin: 120px 0 50px;
}

/* 課題・解決策のBefore/After表示 */
.before-after-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.case-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.case-card h4 {
    font-size: 22px;
    margin-bottom: 10px;
}

.case-header {
    background: #4A9EFF;
    color: white;
    padding: 15px;
    border-radius: 10px 10px 0 0;
    margin: -30px -30px 20px -30px;
    font-weight: bold;
}

.before-after {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin: 40px 0;
}

.before, .after {
    padding: 25px;
    border-radius: 10px;
}

.before {
    background: #fff;
    border-left: 4px solid #ff4757;
}

.after {
    background: #fff;
    border-left: 4px solid #4A9EFF;
}

.before h4, .after h4 {
    margin-bottom: 15px;
    font-weight: bold;
}

.before h4 {
    color: #ff4757;
}

.after h4 {
    color: #4A9EFF;
}

/* ROI Calculator */
.roi-calculator {
    background: linear-gradient(135deg, #6BB6FF 0%, #4A90E2 100%);
    padding: 60px 0;
    color: white;
}

.calc-form {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 20px;
    color: #333;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

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

.form-group label {
    margin-bottom: 8px;
    font-weight: bold;
    color: #333;
}

.form-group input, .form-group select {
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1em;
    transition: border-color 0.3s ease;
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: #FF6B35;
}

.calc-button {
    background: linear-gradient(45deg, #FF6B35, #ee5a24);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 50px;
    font-size: 1.2em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    display: block;
    margin: 20px auto;
}

.calc-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4);
}

.roi-results {
    display: none;
    margin-top: 30px;
    padding: 30px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    color: #333;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.result-item {
    text-align: center;
    padding: 20px 15px;
    background: #4A9EFF;
    color: white;
    border-radius: 10px;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.result-value {
    font-size: 1.8em;
    font-weight: bold;
    margin-bottom: 8px;
    line-height: 1.2;
    word-break: break-all;
}

.result-label {
    font-size: 0.85em;
    opacity: 0.9;
    line-height: 1.3;
}

/* 料金プラン */
.pricing-plans {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.plan-card {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    position: relative;
}

.plan-card.premium {
    background: white;
    color: #333;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 3px solid #6BB6FF;
}

.plan-badge {
    position: absolute;
    top: -15px;
    right: 20px;
    background: #FF6B35;
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: bold;
}

.plan-title {
    font-size: 1.8em;
    margin-bottom: 30px;
    color: #4A9EFF;
}

.plan-price {
    font-size: 3.5em;
    font-weight: bold;
    margin-bottom: 10px;
    color: #4A9EFF;
}

.plan-price .period {
    font-size: 0.6em;
}

.plan-subtitle {
    font-size: 1.1em;
    opacity: 0.7;
    margin-bottom: 30px;
    color: #666;
}

.plan-features {
    text-align: left;
    margin-bottom: 40px;
}

.plan-feature {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.plan-feature i {
    margin-right: 10px;
    color: #4A9EFF;
}

.plan-cta {
    background: #4A90E2;
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 35px;
    font-size: 1.1em;
    font-weight: bold;
    display: block;
    margin: 0 auto;
    max-width: 200px;
    transition: all 0.3s ease;
}

.plan-card:not(.premium) .plan-cta {
    border: 2px solid #4A9EFF;
    color: #4A9EFF;
    background: white;
}

.plan-cta:hover {
    transform: translateY(-2px);
}

/* Process Steps */
.process-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin: 50px 0;
    flex-wrap: wrap;
}

.step-card {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    position: relative;
    flex: 1;
    max-width: 250px;
    min-height: 300px;
}

.step-number {
    background: #4A9EFF;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.1em;
    margin: 0 auto 15px;
}

.step-title {
    font-size: 0.85em;
    font-weight: bold;
    margin-bottom: 15px;
    color: #4A9EFF;
}

.step-arrow {
    color: #4A9EFF;
    font-size: 2em;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.step-arrow2 {
    color: #4A9EFF;
    font-size: 2em;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* FAQ Section */
.faq-item {
    background: white;
    margin-bottom: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.faq-question {
    background: #F8F9FA;
    padding: 20px;
    cursor: pointer;
    font-weight: bold;
    position: relative;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background: #e9ecef;
}

.faq-question::after {
    content: '+';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5em;
    transition: transform 0.3s ease;
}

.faq-question.active::after {
    transform: translateY(-50%) rotate(45deg);
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-answer.active {
    max-height: 200px;
    padding: 20px;
}

/* Image Placeholders */
.image-placeholder {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

.image-placeholder2 {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-left: 120px;
}

.image-placeholder2 img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

/* Step Flow Design */
.step-flow {
    margin: 60px 0;
}

.step-container {
    background: white;
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    position: relative;
    margin-top: 20px;
}

.step-header {
    text-align: center;
    margin-bottom: 40px;
}

.step-number {
    display: inline-block;
    background: linear-gradient(45deg, #4A9EFF, #3a87e6);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em;
    font-weight: bold;
    margin: 0 auto 20px;
}

.step-title {
    font-size: 1.2em;
    color: #4A9EFF;
    font-weight: bold;
    margin-bottom: 10px;
}

.step-subtitle {
    font-size: 1.1em;
    color: #666;
}

.traditional-methods {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.methods-header {
    display: grid;
    grid-template-columns: 1fr repeat(2, 1fr);
    background: #4A9EFF;
    color: white;
}

.methods-header div {
    padding: 20px;
    text-align: center;
    font-weight: bold;
    font-size: 1.1em;
}

.methods-header div:first-child {
    background: #3a87e6;
    font-size: 1.2em;
}

.methods-row {
    display: grid;
    grid-template-columns: 1fr repeat(2, 1fr);
    border-bottom: 1px solid #ddd;
}

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

.methods-row div {
    padding: 20px;
    text-align: center;
    font-size: 0.95em;
}

.methods-row div:first-child {
    background: #e6f7ff;
    font-weight: bold;
    text-align: left;
    color: #4A9EFF;
}

.methods-row:nth-child(even) {
    background: #f0f8ff;
}

.methods-row:nth-child(even) div:first-child {
    background: #d6f0ff;
}

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

.limitation-item {
    background: #fdf0f0;
    padding: 25px;
    border-radius: 15px;
    border-left: 5px solid #dc3545;
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.limitation-icon {
    width: 40px;
    height: 40px;
    background: #dc3545;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2em;
    flex-shrink: 0;
}

.limitation-content h4 {
    color: #856404;
    margin-bottom: 10px;
    font-size: 1.1em;
}

.limitation-content p {
    color: #856404;
    margin: 0;
    font-size: 0.95em;
}

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

.solution-item {
    background: #e6f7ff;
    padding: 25px;
    border-radius: 15px;
    border-left: 5px solid #4A9EFF;
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.solution-icon {
    width: 40px;
    height: 40px;
    background: #4A9EFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2em;
    flex-shrink: 0;
}

.solution-content h4 {
    color: #4A9EFF;
    margin-bottom: 10px;
    font-size: 1.1em;
}

.solution-content p {
    color: #4A9EFF;
    margin: 0;
    font-size: 0.95em;
}

/* Final CTA */
.final-cta {
    background: linear-gradient(135deg, #6BB6FF 0%, #4A90E2 100%);
    padding: 80px 0;
    text-align: center;
    color: white;
}

.final-cta h2 {
    color: white;
    margin-bottom: 30px;
}

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

.soumu_dx {
    display: flex;
    justify-content: center;
    align-items: center;
}

.soumu_dx img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.5em;
    }
    
    .section h2 {
        font-size: 2.2em;
    }
    
    .core-functions {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    .business-cases {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 60px;
    }

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

    .nav-menu {
        display: none;
    }

    .logo {
        font-size: 1em;
    }

    .logo-text {
        font-size: 0.9em;
    }

    .logo-icon img {
        max-width: 80px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-left {
        text-align: center;
    }
    
    .hero h1 {
        font-size: 2.2em;
    }
    
    .hero .subtitle {
        font-size: 1.2em;
    }
    
    .hero-badges {
        align-items: center;
    }

    .badge {
        width: 100%;
        max-width: none;
        box-sizing: border-box;
    }

    .hero-video-placeholder {
        height: 250px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section h2 {
        font-size: 1.8em;
    }
    
    .feature-item {
        flex-direction: column !important;
        text-align: center;
        gap: 20px;
        padding: 30px 20px;
    }

    .feature-image {
        margin: 0;
        order: -1;
    }

    .feature-image img {
        max-width: 200px;
        max-height: 150px;
    }
    
    .core-functions {
        grid-template-columns: 1fr;
    }
    
    .business-cases {
        grid-template-columns: 1fr;
    }
    
    .before-after {
        grid-template-columns: 1fr;
    }

    /* 課題・解決策のBefore/Afterをモバイルで縦並びに */
    .before-after-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .traditional-methods {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .methods-header, .methods-row {
        min-width: 800px;
        grid-template-columns: 200px 300px 300px;
    }
    
    .methods-header div, .methods-row div {
        padding: 15px 10px;
        font-size: 0.8em;
        text-align: left;
    }
    
    .methods-header div:first-child, .methods-row div:first-child {
        font-weight: bold;
        background: #3a87e6 !important;
        color: white;
        font-size: 0.85em;
    }
    
    .process-steps {
        flex-direction: column;
        gap: 20px;
    }
    
    .step-card {
        max-width: 100%;
        width: 100%;
    }
    
    .step-arrow {
        margin: 10px 0;
    }

    .step-arrow2 {
        transform: rotate(90deg);
        margin: 10px 0;
    }

    .image-placeholder2 {
        margin-left: 0;
    }

    .calc-form {
        grid-template-columns: 1fr;
        padding: 30px 20px;
    }

    .results-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .result-item {
        padding: 15px 10px;
        min-height: 100px;
    }

    .result-value {
        font-size: 1.4em;
        margin-bottom: 5px;
    }

    .result-label {
        font-size: 0.75em;
        line-height: 1.2;
    }

    .cta-primary, .cta-secondary {
        padding: 15px 30px;
        font-size: 1.1em;
    }

    .final-cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    #what-is-dx .container > div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
        gap: 30px !important;
    }

    .soumu_dx {
        text-align: center;
        height: auto !important;
        padding: 20px !important;
    }

    .soumu_dx img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    .limitations-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .solution-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    /* 料金プランをモバイルで縦並びに */
    .pricing-plans {
        grid-template-columns: 1fr !important;
        gap: 30px !important;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8em;
    }
    
    .hero .subtitle {
        font-size: 1.1em;
    }

    .hero-video-placeholder {
        height: 200px;
    }
    
    .section h2 {
        font-size: 1.6em;
    }

    .feature-image img {
        max-width: 150px;
        max-height: 120px;
    }

    /* ROI計算結果をさらに小さく */
    .results-grid {
        gap: 8px;
    }

    .result-item {
        padding: 12px 8px;
        min-height: 90px;
    }

    .result-value {
        font-size: 1.2em;
        margin-bottom: 4px;
    }

    .result-label {
        font-size: 0.7em;
        line-height: 1.1;
    }
}

/* Footer responsive */
@media (max-width: 768px) {
    footer div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
        gap: 40px !important;
    }
}