/* ========================================
   リセットとベーススタイル
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* カラー設定 */
    --primary-color: #2563eb;
    --secondary-color: #10b981;
    --accent-color: #8b5cf6;
    --dark-color: #1e293b;
    --text-color: #334155;
    --light-gray: #f1f5f9;
    --border-color: #e2e8f0;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
    
    /* タイポグラフィ */
    --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* スペーシング */
    --section-padding: 100px 0;
    --container-padding: 0 20px;
    
    /* シャドウ */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* トランジション */
    --transition: all 0.3s ease;
}

body {
    font-family: var(--font-family);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    font-size: 17px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    display: flex;
    align-items: center;
}

.logo-image {
    height: 60px;
    width: auto;
    display: block;
}

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

.logo-value {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    font-size: 16px;
}

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

.cta-button-small {
    padding: 10px 24px;
    background: var(--gradient-primary);
    color: var(--white);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
}

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

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--dark-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* ========================================
   ヒーローセクション
   ======================================== */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 20px;
    color: var(--text-color);
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
    justify-content: flex-start;
}

.cta-button-primary {
    padding: 16px 32px;
    background: var(--gradient-primary);
    color: var(--white);
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 17px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.cta-button-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.cta-button-secondary {
    padding: 16px 32px;
    background: var(--white);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 16px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 2px solid var(--primary-color);
    transition: var(--transition);
}

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

.hero-stats {
    display: flex;
    gap: 40px;
}

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

.stat-number {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-color);
}

/* ダッシュボードモックアップ */
.dashboard-mockup {
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    animation: float 3s ease-in-out infinite;
    max-width: 500px;
    margin-left: auto;
}

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

.mockup-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.mockup-dots {
    display: flex;
    gap: 6px;
}

.mockup-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
}

.mockup-title {
    color: var(--white);
    font-weight: 600;
    font-size: 14px;
}

.mockup-content {
    padding: 0;
    overflow: hidden;
    position: relative;
}

.mockup-content::after {
    content: "クリックで拡大";
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: var(--white);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 11px;
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.mockup-content:hover::after {
    opacity: 1;
}

/* ダッシュボード画像 */
.dashboard-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    cursor: pointer;
    transition: var(--transition);
}

.dashboard-image:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

/* 画像拡大モーダル */
.image-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    padding: 50px 20px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.95);
    animation: fadeIn 0.3s ease-out;
}

.image-modal.active {
    display: block;
}

.modal-content {
    margin: auto;
    display: block;
    max-width: 95%;
    max-height: 85vh;
    object-fit: contain;
    animation: zoomIn 0.3s ease-out;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    border-radius: 8px;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 40px;
    color: var(--white);
    font-size: 50px;
    font-weight: 300;
    transition: var(--transition);
    cursor: pointer;
    z-index: 10000;
    line-height: 1;
}

.modal-close:hover,
.modal-close:focus {
    color: #bbb;
    transform: scale(1.1);
}

.modal-caption {
    margin: 20px auto;
    display: block;
    width: fit-content;
    max-width: 80%;
    text-align: center;
    color: #ccc;
    padding: 10px 20px;
    font-size: 14px;
}

@keyframes zoomIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

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

/* ========================================
   セクション共通スタイル
   ======================================== */
section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 44px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 15px;
    line-height: 1.3;
}

.section-description {
    font-size: 19px;
    color: var(--text-color);
    max-width: 700px;
    margin: 0 auto;
}

.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   課題セクション
   ======================================== */
.problem-section {
    background: var(--white);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.problem-card {
    background: var(--light-gray);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    transition: var(--transition);
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.problem-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: var(--white);
}

.problem-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.problem-card p {
    font-size: 16px;
    color: var(--text-color);
    line-height: 1.7;
}

/* ========================================
   ソリューションセクション
   ======================================== */
.solution-section {
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
}

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

.solution-badge {
    display: inline-block;
    padding: 6px 14px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 16px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.solution-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.solution-description {
    font-size: 16px;
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 30px;
}

.solution-list {
    list-style: none;
    margin-bottom: 30px;
}

.solution-list li {
    padding: 12px 0;
    font-size: 16px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.solution-list i {
    color: var(--secondary-color);
    font-size: 20px;
}

/* 計算式カード */
.formula-card {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
}

.formula-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 30px;
    text-align: center;
}

.formula {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.formula-item {
    background: var(--light-gray);
    padding: 15px 20px;
    border-radius: 12px;
    text-align: center;
    min-width: 120px;
}

.formula-item.highlight-item {
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    border: 2px solid var(--primary-color);
}

.formula-item.result-item {
    background: linear-gradient(135deg, #4ade8015 0%, #22c55e15 100%);
    border: 2px solid var(--secondary-color);
}

.formula-label {
    display: block;
    font-size: 12px;
    color: var(--text-color);
    margin-bottom: 5px;
}

.formula-value {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--dark-color);
}

.formula-operator {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.formula-divider {
    height: 2px;
    background: var(--border-color);
    margin: 20px 0;
}

/* ========================================
   機能セクション
   ======================================== */
.features-section {
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--white);
    border: 2px solid var(--border-color);
    padding: 35px 25px;
    border-radius: 16px;
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: var(--white);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.feature-card > p {
    font-size: 16px;
    color: var(--text-color);
    line-height: 1.7;
    margin-bottom: 20px;
}

.feature-list {
    list-style: none;
    padding-left: 0;
}

.feature-list li {
    font-size: 14px;
    color: var(--text-color);
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
}

.feature-list li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* ========================================
   メリットセクション
   ======================================== */
.benefits-section {
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
}

.benefits-grid {
    display: grid;
    gap: 30px;
}

.benefit-card {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    display: flex;
    gap: 30px;
    align-items: flex-start;
    transition: var(--transition);
}

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

.benefit-number {
    font-size: 48px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.benefit-content h3 {
    font-size: 26px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.benefit-content p {
    font-size: 17px;
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 20px;
}

.benefit-highlights {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.benefit-tag {
    padding: 6px 14px;
    background: var(--light-gray);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

/* ========================================
   料金セクション
   ======================================== */
.pricing-section {
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
}

.pricing-card {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    padding: 50px 40px;
    border-radius: 24px;
    box-shadow: var(--shadow-xl);
    text-align: center;
}

.pricing-badge {
    display: inline-block;
    padding: 8px 16px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 15px;
}

.pricing-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 20px;
}

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

.price-currency {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-color);
    vertical-align: super;
}

.price-amount {
    font-size: 64px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-period {
    font-size: 18px;
    color: var(--text-color);
}

.pricing-description {
    font-size: 15px;
    color: var(--text-color);
    margin-bottom: 30px;
    line-height: 1.8;
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: 30px;
}

.pricing-features li {
    padding: 12px 0;
    font-size: 17px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.pricing-features i {
    color: var(--secondary-color);
    font-size: 18px;
}

/* ========================================
   使い方セクション
   ======================================== */
.how-section {
    background: var(--white);
}

.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.step-card {
    background: var(--white);
    border: 2px solid var(--border-color);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    flex: 1;
    min-width: 250px;
    max-width: 300px;
    position: relative;
    transition: var(--transition);
}

.step-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    display: inline-block;
    padding: 6px 14px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 20px;
}

.step-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--light-gray);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: var(--primary-color);
}

.step-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.step-card p {
    font-size: 15px;
    color: var(--text-color);
    line-height: 1.7;
}

.step-arrow {
    font-size: 30px;
    color: var(--primary-color);
}

/* ========================================
   料金セクション
   ======================================== */
.pricing-section {
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
}

.pricing-card {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    padding: 50px 40px;
    border-radius: 24px;
    box-shadow: var(--shadow-xl);
    text-align: center;
}

.pricing-badge {
    display: inline-block;
    padding: 8px 16px;
    background: var(--gradient-secondary);
    color: var(--white);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 15px;
}

.pricing-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 20px;
}

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

.price-currency {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-color);
    vertical-align: super;
}

.price-amount {
    font-size: 48px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-period {
    font-size: 18px;
    color: var(--text-color);
}

.pricing-description {
    font-size: 15px;
    color: var(--text-color);
    margin-bottom: 30px;
    line-height: 1.8;
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: 30px;
}

.pricing-features li {
    padding: 12px 0;
    font-size: 17px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.pricing-features i {
    color: var(--secondary-color);
    font-size: 18px;
}

/* ========================================
   CTAセクション
   ======================================== */
.cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: 40px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    line-height: 1.3;
}

.cta-description {
    font-size: 18px;
    text-align: center;
    margin-bottom: 50px;
    opacity: 0.95;
    line-height: 1.8;
}

/* 連絡先情報ボックス */
.contact-info-box {
    background: var(--white);
    padding: 50px 40px;
    border-radius: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.contact-info-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark-color);
    text-align: center;
    margin-bottom: 40px;
}

.contact-info-items {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 24px;
    flex-shrink: 0;
}

.contact-details {
    flex: 1;
}

.contact-label {
    font-size: 14px;
    color: var(--text-color);
    margin-bottom: 8px;
    font-weight: 500;
}

.contact-value {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--dark-color);
    text-decoration: none;
    margin-bottom: 5px;
    transition: var(--transition);
}

.contact-value:hover {
    color: var(--primary-color);
}

.phone-number {
    color: var(--primary-color);
}

.email-address {
    color: var(--primary-color);
    word-break: break-all;
}

.contact-note {
    font-size: 13px;
    color: var(--text-color);
    opacity: 0.8;
}

/* 旧フォームスタイルは削除 */
.contact-form {
    display: none;
}

/* ========================================
   フッター
   ======================================== */
.footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand .logo-image {
    height: 50px;
    margin-bottom: 15px;
}

.footer-brand p {
    margin-top: 15px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
}

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

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-column ul li a:hover {
    color: var(--white);
}

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

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

/* ========================================
   レスポンシブデザイン
   ======================================== */
.pc-only {
    display: inline;
}

@media (max-width: 1024px) {
    .hero .container {
        gap: 40px;
        grid-template-columns: 1.3fr 1fr;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .dashboard-mockup {
        max-width: 450px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .solution-content {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    /* ヘッダー */
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 30px;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .cta-button-small {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    /* ヒーロー */
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-buttons .cta-button-primary {
        width: 100%;
        max-width: 350px;
    }
    
    .hero-stats {
        gap: 20px;
    }
    
    .pc-only {
        display: none;
    }
    
    /* セクション */
    section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .section-description {
        font-size: 16px;
    }
    
    /* グリッド */
    .problem-grid,
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .solution-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .formula {
        flex-direction: column;
    }
    
    .formula-operator {
        transform: rotate(90deg);
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .benefit-card {
        flex-direction: column;
        gap: 20px;
    }
    
    /* 連絡先情報 */
    .contact-info-items {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-info-box {
        padding: 40px 30px;
    }
    
    /* フッター */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .cta-button-primary,
    .cta-button-secondary {
        padding: 14px 24px;
        font-size: 15px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 15px;
    }
    
    .contact-value {
        font-size: 20px;
    }
    
    .contact-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
    
    .logo-image {
        height: 45px;
    }
    
    .footer-brand .logo-image {
        height: 50px;
    }
    
    .dashboard-mockup {
        max-width: 100%;
        margin-left: 0;
    }
    
    /* モーダル調整 */
    .modal-close {
        top: 10px;
        right: 20px;
        font-size: 40px;
    }
    
    .modal-content {
        max-width: 98%;
        max-height: 80vh;
    }
    
    .modal-caption {
        font-size: 12px;
        padding: 8px 15px;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   アニメーション
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards !important;
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* スクロールスムーズ */
html {
    scroll-behavior: smooth;
}