/* ===================================
   グローバル設定
   =================================== */

:root {
    /* カラー変数 */
    --primary-color: #0066cc;
    --primary-dark: #0052a3;
    --primary-light: #3385db;
    --secondary-color: #00b4d8;
    --accent-color: #ff6b35;
    --success-color: #06d6a0;
    --warning-color: #ffd166;
    --danger-color: #ef476f;
    
    --text-dark: #1a1a1a;
    --text-medium: #4a4a4a;
    --text-light: #7a7a7a;
    --text-white: #ffffff;
    
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-dark: #1a1a2e;
    --bg-darker: #0f0f1e;
    
    --border-color: #e0e0e0;
    --border-light: #f0f0f0;
    
    /* グラデーション */
    --gradient-primary: linear-gradient(135deg, #0066cc 0%, #00b4d8 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --gradient-light: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    
    /* シャドウ */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.2);
    
    /* トランジション */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* ボーダー半径 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* フォント */
    --font-family: 'Noto Sans JP', sans-serif;
}

/* リセットとベース設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    color: var(--text-dark);
    line-height: 1.7;
    background-color: var(--bg-white);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

ul, ol {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ===================================
   共通コンポーネント
   =================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-padding {
    padding: 100px 0;
}

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

.bg-dark {
    background-color: var(--bg-dark);
    color: var(--text-white);
}

.bg-gradient {
    background: var(--gradient-light);
}

/* セクションヘッダー */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary-color);
    margin-bottom: 16px;
    position: relative;
    padding: 0 20px;
}

.section-label::before,
.section-label::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 2px;
    background: var(--primary-color);
}

.section-label::before {
    left: -40px;
}

.section-label::after {
    right: -40px;
}

.section-label.light {
    color: var(--secondary-color);
}

.section-label.light::before,
.section-label.light::after {
    background: var(--secondary-color);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    line-height: 1.3;
    margin-bottom: 24px;
    color: var(--text-dark);
}

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

.section-description {
    font-size: 1.125rem;
    color: var(--text-medium);
    max-width: 700px;
    margin: 0 auto;
}

.section-description.light {
    color: rgba(255, 255, 255, 0.8);
}

.highlight {
    color: var(--primary-color);
    position: relative;
}

/* ボタンスタイル */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
    cursor: pointer;
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-white);
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-small {
    padding: 10px 24px;
    font-size: 0.9rem;
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.125rem;
}

.btn-glow {
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(0, 102, 204, 0.5);
    }
    50% {
        box-shadow: 0 0 40px rgba(0, 102, 204, 0.8);
    }
}

/* ===================================
   ヘッダー
   =================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-normal);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.brand-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.brand-text {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.logo {
    font-size: 1.75rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-sub {
    font-size: 0.875rem;
    color: var(--text-medium);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition-normal);
}

.nav-link:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    color: var(--text-dark);
}

/* モバイルメニュー */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background: var(--bg-white);
    box-shadow: var(--shadow-xl);
    z-index: 2000;
    transition: var(--transition-normal);
    overflow-y: auto;
}

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

.mobile-menu-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 1.5rem;
    color: var(--text-dark);
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 80px 30px 30px;
}

.mobile-menu-link {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
    padding: 15px 0;
    border-bottom: 1px solid var(--border-light);
}

/* ===================================
   ヒーローセクション
   =================================== */

.hero {
    padding: 140px 0 100px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 50%, #f8f9fa 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(0, 102, 204, 0.05) 0%, transparent 50%);
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, #ff6b35 0%, #f7b733 100%);
    color: var(--text-white);
    font-size: 0.875rem;
    font-weight: 700;
    border-radius: 50px;
    margin-bottom: 24px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.hero-title {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
}

.brand-name {
    font-size: 3.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-medium);
    margin-bottom: 32px;
    font-weight: 500;
}

.hero-features {
    display: flex;
    gap: 24px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.hero-feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-dark);
}

.hero-feature-item i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

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

.hero-visual {
    position: relative;
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 24px;
}

.chat-bubble {
    padding: 20px 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    max-width: 80%;
    animation: fadeInUp 0.5s ease;
}

.chat-bubble-user {
    background: var(--bg-light);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.chat-bubble-ai {
    background: var(--gradient-primary);
    color: var(--text-white);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.typing-indicator {
    display: flex;
    gap: 6px;
    margin-bottom: 10px;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    animation: typing 1.4s ease-in-out 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);
    }
}

.ai-avatar {
    position: absolute;
    bottom: -20px;
    left: 40px;
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 2rem;
    box-shadow: var(--shadow-lg);
    border: 4px solid var(--bg-white);
}

.status-indicator {
    position: absolute;
    bottom: 5px;
    right: 5px;
    width: 16px;
    height: 16px;
    background: var(--success-color);
    border-radius: 50%;
    border: 3px solid var(--bg-white);
    animation: pulse 2s ease-in-out infinite;
}

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

/* ===================================
   課題セクション
   =================================== */

.challenges-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.challenge-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.challenge-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.challenge-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 2.5rem;
    margin-bottom: 24px;
}

.challenge-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-dark);
}

.challenge-stats {
    display: flex;
    gap: 20px;
    margin-bottom: 24px;
}

.stat-item {
    flex: 1;
    text-align: center;
    padding: 20px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-medium);
    font-weight: 600;
}

.challenge-description {
    font-size: 1rem;
    color: var(--text-medium);
    line-height: 1.7;
    margin-bottom: 16px;
}

.challenge-source {
    font-size: 0.75rem;
    color: var(--text-light);
    font-style: italic;
}

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

.challenge-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 0.95rem;
    color: var(--text-medium);
}

.challenge-list i {
    color: var(--danger-color);
    margin-top: 4px;
}

/* ===================================
   サービス紹介セクション
   =================================== */

.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-main {
    text-align: center;
    margin-bottom: 60px;
}

.about-description {
    max-width: 800px;
    margin: 0 auto;
}

.lead {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

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

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 2rem;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.feature-description {
    font-size: 1rem;
    color: var(--text-medium);
    line-height: 1.7;
}

/* ===================================
   比較表セクション
   =================================== */

.comparison-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.comparison-table {
    width: 100%;
    background: var(--bg-white);
    border-collapse: collapse;
}

.comparison-header {
    padding: 24px;
    font-size: 1.125rem;
    font-weight: 700;
    text-align: left;
    background: var(--bg-light);
    border-bottom: 3px solid var(--border-color);
}

.comparison-header.old-type {
    background: #f8d7da;
    color: var(--text-dark);
}

.comparison-header.new-type {
    background: var(--gradient-primary);
    color: var(--text-white);
}

.comparison-table tbody tr {
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition-fast);
}

.comparison-table tbody tr:hover {
    background: var(--bg-light);
}

.comparison-category {
    padding: 24px;
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-dark);
    background: var(--bg-light);
    width: 200px;
}

.comparison-category i {
    margin-right: 10px;
    color: var(--primary-color);
}

.old-type-cell,
.new-type-cell {
    padding: 24px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.old-type-cell i {
    color: var(--danger-color);
    margin-right: 10px;
}

.new-type-cell i {
    color: var(--success-color);
    margin-right: 10px;
}

/* ===================================
   技術的特徴セクション
   =================================== */

.technology-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.technology-card {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    position: relative;
    transition: var(--transition-normal);
}

.technology-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--secondary-color);
    transform: translateY(-5px);
}

.technology-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 3rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.1);
}

.technology-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 2rem;
    margin-bottom: 24px;
}

.technology-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-white);
}

.technology-description {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    margin-bottom: 20px;
}

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

.technology-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.technology-list i {
    color: var(--success-color);
    font-size: 0.875rem;
}

/* ===================================
   選ばれる理由セクション
   =================================== */

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.benefit-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

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

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

.benefit-icon-wrapper {
    margin-bottom: 24px;
}

.benefit-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 2rem;
}

.benefit-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.benefit-description {
    font-size: 1rem;
    color: var(--text-medium);
    line-height: 1.7;
    margin-bottom: 20px;
}

.benefit-highlight {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: rgba(0, 102, 204, 0.1);
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.benefit-highlight i {
    color: var(--success-color);
}

/* ===================================
   導入事例セクション
   =================================== */

.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.case-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition-normal);
}

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

.case-header {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 32px;
    background: var(--gradient-light);
    border-bottom: 3px solid var(--primary-color);
}

.case-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 1.75rem;
    flex-shrink: 0;
}

.case-industry {
    display: block;
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 8px;
}

.case-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
}

.case-content {
    padding: 32px;
}

.case-challenge,
.case-solution {
    margin-bottom: 24px;
}

.case-challenge h4,
.case-solution h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.case-challenge h4 {
    color: var(--danger-color);
}

.case-solution h4 {
    color: var(--success-color);
}

.case-challenge p {
    color: var(--text-medium);
    line-height: 1.7;
}

.case-solution ul {
    list-style: none;
}

.case-solution li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 8px;
    color: var(--text-medium);
}

.case-solution li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
}

.case-quote {
    padding: 24px 32px;
    background: var(--bg-light);
    position: relative;
}

.case-quote i {
    font-size: 1.5rem;
    color: var(--primary-color);
    opacity: 0.3;
    margin-bottom: 12px;
}

.case-quote p {
    font-style: italic;
    color: var(--text-medium);
    line-height: 1.7;
}

/* ===================================
   ターゲット業界セクション
   =================================== */

.industries-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

.industries-suitable,
.industries-caution {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.industries-subtitle {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.industries-description {
    font-size: 1rem;
    color: var(--text-medium);
    margin-bottom: 32px;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.industry-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition-fast);
}

.industry-item:hover {
    background: var(--gradient-primary);
    color: var(--text-white);
}

.industry-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.industry-item:hover i {
    color: var(--text-white);
}

.industries-reasons {
    padding: 24px;
    background: rgba(0, 102, 204, 0.05);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

.industries-reasons h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.industries-reasons ul {
    list-style: none;
}

.industries-reasons li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    color: var(--text-medium);
}

.industries-reasons i {
    color: var(--success-color);
}

.caution-industries {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.caution-tag {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
}

.caution-tag i {
    color: var(--warning-color);
}

.caution-note {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: rgba(255, 209, 102, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-medium);
    font-size: 0.9rem;
    line-height: 1.6;
}

.caution-note i {
    color: var(--warning-color);
    margin-top: 2px;
}

/* ===================================
   料金セクション
   =================================== */

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.pricing-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    position: relative;
}

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

.pricing-card.featured {
    border: 3px solid var(--primary-color);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.08) translateY(-5px);
}

.pricing-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: var(--text-white);
    padding: 8px 24px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 700;
}

.pricing-header {
    text-align: center;
    margin-bottom: 24px;
}

.pricing-header i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.pricing-header h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-dark);
}

.pricing-price {
    text-align: center;
    margin-bottom: 16px;
}

.price-amount {
    font-size: 3rem;
    font-weight: 900;
    color: var(--primary-color);
}

.price-suffix {
    font-size: 1.25rem;
    color: var(--text-medium);
}

.pricing-description {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-medium);
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--border-light);
}

.pricing-features {
    list-style: none;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    color: var(--text-medium);
}

.pricing-features i {
    color: var(--success-color);
    font-size: 0.875rem;
}

/* ===================================
   コスト比較セクション
   =================================== */

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.comparison-item {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    position: relative;
}

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

.comparison-item.featured {
    border: 3px solid var(--success-color);
}

.comparison-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--success-color);
    color: var(--text-white);
    padding: 8px 24px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 700;
    white-space: nowrap;
}

.comparison-header {
    text-align: center;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--border-light);
}

.comparison-header i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.comparison-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.comparison-cost {
    display: flex;
    flex-direction: column;
    padding: 16px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
}

.cost-label {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

.cost-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.cost-note {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 4px;
}

.comparison-pros,
.comparison-cons {
    margin-bottom: 20px;
}

.comparison-pros h4,
.comparison-cons h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.comparison-pros h4 {
    color: var(--success-color);
}

.comparison-cons h4 {
    color: var(--danger-color);
}

.comparison-pros ul,
.comparison-cons ul {
    list-style: none;
}

.comparison-pros li,
.comparison-cons li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 8px;
    color: var(--text-medium);
    font-size: 0.9rem;
}

.comparison-pros li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
}

.comparison-cons li::before {
    content: '×';
    position: absolute;
    left: 0;
    color: var(--danger-color);
    font-weight: 700;
}

/* ===================================
   キャンペーンセクション
   =================================== */

.campaign {
    background: var(--gradient-primary);
    color: var(--text-white);
}

.campaign-banner {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: 60px;
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: center;
}

.campaign-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.campaign-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: var(--accent-color);
    color: var(--text-white);
    font-size: 0.875rem;
    font-weight: 700;
    border-radius: 50px;
    margin-bottom: 24px;
    animation: pulse 2s ease-in-out infinite;
}

.campaign-title {
    margin-bottom: 32px;
}

.campaign-label {
    display: block;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    opacity: 0.9;
}

.campaign-main {
    display: block;
    font-size: 2.5rem;
    font-weight: 900;
}

.campaign-offer {
    margin-bottom: 40px;
}

.campaign-price {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 32px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    flex-wrap: wrap;
}

.price-before {
    font-size: 1.5rem;
    text-decoration: line-through;
    opacity: 0.7;
}

.price-before::after {
    content: '';
    display: block;
    font-size: 0.875rem;
    margin-top: 4px;
}

.campaign-price i {
    font-size: 2rem;
}

.price-after {
    font-size: 3rem;
    font-weight: 900;
    color: var(--warning-color);
}

.campaign-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.campaign-detail-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.campaign-detail-item i {
    font-size: 1.5rem;
    color: var(--warning-color);
    margin-top: 4px;
}

.campaign-detail-item strong {
    display: block;
    font-size: 1.125rem;
    margin-bottom: 4px;
}

.campaign-detail-item p {
    opacity: 0.9;
}

.campaign-cta {
    text-align: center;
}

.campaign-note {
    margin-top: 16px;
    font-size: 0.9rem;
    opacity: 0.8;
}

.campaign-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
}

.campaign-icon {
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--warning-color);
    animation: rotate 10s linear infinite;
}

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

.campaign-saving {
    text-align: center;
}

.saving-label {
    display: block;
    font-size: 1.125rem;
    margin-bottom: 8px;
}

.saving-amount {
    display: block;
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--warning-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

/* ===================================
   お問い合わせセクション
   =================================== */

.contact-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
}

.company-profile {
    margin-bottom: 40px;
}

.company-logo {
    height: 45px;
    width: auto;
    object-fit: contain;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.company-name {
    font-size: 2rem;
    font-weight: 900;
    color: var(--text-white);
    margin-bottom: 12px;
}

.company-tagline {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
}

.company-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.company-detail-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.company-detail-item i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-top: 4px;
}

.company-detail-item strong {
    display: block;
    font-size: 1rem;
    margin-bottom: 4px;
    color: var(--text-white);
}

.company-detail-item p {
    color: rgba(255, 255, 255, 0.8);
}

.contact-subtitle {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 24px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.contact-method:hover {
    background: rgba(255, 255, 255, 0.1);
}

.contact-method i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-top: 4px;
}

.contact-method strong {
    display: block;
    font-size: 0.875rem;
    margin-bottom: 4px;
    color: rgba(255, 255, 255, 0.7);
}

.contact-method a {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-white);
}

.contact-method a:hover {
    color: var(--secondary-color);
}

.contact-name {
    display: block;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 4px;
}

.contact-cta-section {
    display: flex;
    align-items: center;
}

.contact-cta-box {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
}

.contact-cta-box h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-white);
}

.contact-cta-box p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
    line-height: 1.7;
}

/* ===================================
   フッター
   =================================== */

.footer {
    background: var(--bg-darker);
    color: var(--text-white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand-logo {
    height: 35px;
    width: auto;
    object-fit: contain;
    margin-bottom: 16px;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.footer-logo {
    font-size: 1.75rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links h4,
.footer-company h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-white);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.footer-company p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 8px;
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* ===================================
   トップへ戻るボタン
   =================================== */

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
}

/* ===================================
   レスポンシブデザイン
   =================================== */

@media (max-width: 1024px) {
    .section-padding {
        padding: 80px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .brand-name {
        font-size: 2.75rem;
    }
    
    .challenges-grid,
    .technology-grid,
    .pricing-cards,
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid,
    .benefits-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .industries-content {
        grid-template-columns: 1fr;
    }
    
    .campaign-banner {
        grid-template-columns: 1fr;
        padding: 40px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .brand-logo {
        height: 32px;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav .btn {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .brand-name {
        font-size: 2.25rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section-padding {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .comparison-table-wrapper {
        overflow-x: scroll;
    }
    
    .comparison-table {
        min-width: 700px;
    }
    
    .industries-grid {
        grid-template-columns: 1fr;
    }
    
    .campaign-price {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .campaign-visual {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .section-label::before,
    .section-label::after {
        display: none;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 12px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .campaign-banner {
        padding: 30px 20px;
    }
    
    .campaign-main {
        font-size: 1.75rem;
    }
    
    .price-after {
        font-size: 2.5rem;
    }
}