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

:root {
    /* カラーパレット */
    --primary-color: #1e3a8a;
    --primary-dark: #1e293b;
    --primary-light: #3b82f6;
    --secondary-color: #f97316;
    --secondary-light: #fb923c;
    --accent-color: #10b981;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
    --bg-dark: #0f172a;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* タイポグラフィ */
    --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Inter', 'Noto Sans JP', sans-serif;
    
    /* トランジション */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

/* ========================================
   コンテナとレイアウト
======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

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

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    text-align: center;
    margin-bottom: 16px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    margin: 20px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 60px;
}

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

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    gap: 10px;
}

.nav-brand i {
    font-size: 1.5rem;
    color: var(--secondary-color);
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 0;
}

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

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

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* ========================================
   ボタン
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
    color: var(--bg-white);
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-sm {
    padding: 8px 20px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.125rem;
}

/* ========================================
   ヒーローセクション
======================================== */
.hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #3b82f6 100%);
    padding: 140px 0 80px;
    color: var(--bg-white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.05)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-repeat: no-repeat;
    background-position: bottom;
    background-size: cover;
    opacity: 0.3;
}

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

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

.hero-title .highlight {
    background: linear-gradient(to right, #fbbf24, #f97316);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: 40px;
    opacity: 0.95;
}

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

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

.stat-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 900;
    color: var(--secondary-color);
    line-height: 1;
}

.stat-number span {
    font-size: 1.5rem;
}

.stat-label {
    font-size: 0.875rem;
    margin-top: 8px;
    opacity: 0.9;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.hero-campaign {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background-color: rgba(251, 146, 60, 0.2);
    padding: 12px 24px;
    border-radius: 50px;
    border: 2px solid var(--secondary-color);
    font-weight: 600;
}

.hero-campaign i {
    color: var(--secondary-color);
    animation: pulse 2s infinite;
}

.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15rem;
    color: rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
}

/* ========================================
   課題セクション
======================================== */
.challenges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.challenge-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
}

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

.challenge-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    color: var(--bg-white);
    font-size: 2rem;
    margin-bottom: 20px;
}

.challenge-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.challenge-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ========================================
   Career Engagement®セクション
======================================== */
.about-definition {
    margin-bottom: 50px;
}

.definition-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
}

.definition-card h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.definition-card p {
    font-size: 1.125rem;
    line-height: 1.8;
}

.text-highlight {
    background: linear-gradient(to right, #fbbf24, #f97316);
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 700;
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 30px;
    align-items: center;
    margin-bottom: 50px;
}

.comparison-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
    transition: var(--transition);
}

.comparison-card.featured {
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-lg);
    transform: scale(1.05);
}

.comparison-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.comparison-icon.external {
    background: linear-gradient(135deg, #6b7280, #9ca3af);
    color: var(--bg-white);
}

.comparison-icon.internal {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
    color: var(--bg-white);
}

.comparison-card h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--primary-dark);
}

.comparison-focus {
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 20px;
}

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

.comparison-list li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
}

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

.comparison-arrow {
    text-align: center;
    color: var(--secondary-color);
}

.comparison-arrow i {
    font-size: 3rem;
}

.comparison-arrow p {
    font-weight: 600;
    margin-top: 10px;
}

.effect-box {
    background: linear-gradient(135deg, #ecfdf5, #d1fae5);
    border: 2px solid var(--accent-color);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
}

.effect-box i {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 16px;
}

.effect-box p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--primary-dark);
}

/* ========================================
   CESスコアセクション
======================================== */
.score-intro {
    text-align: center;
    font-size: 1.25rem;
    max-width: 800px;
    margin: 0 auto 60px;
    color: var(--text-dark);
}

.dimensions-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    color: var(--primary-dark);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.dimensions-subtitle {
    display: block;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-light);
}

.dimensions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.dimension-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    position: relative;
    transition: var(--transition);
}

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

.dimension-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 900;
    color: rgba(30, 58, 138, 0.1);
}

.dimension-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    color: var(--bg-white);
    font-size: 1.75rem;
    margin-bottom: 20px;
}

.dimension-card h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.dimension-card p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.dimension-stars {
    display: flex;
    gap: 5px;
    color: #fbbf24;
    font-size: 1rem;
}

/* スコア解釈 */
.interpretation-title {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    color: var(--primary-dark);
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.interpretation-table {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.interpretation-row {
    display: grid;
    grid-template-columns: 200px 1fr auto;
    gap: 30px;
    background: var(--bg-white);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow-md);
    border-left: 6px solid;
    transition: var(--transition);
}

.interpretation-row:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-lg);
}

.interpretation-row.excellent {
    border-color: #10b981;
}

.interpretation-row.good {
    border-color: #3b82f6;
}

.interpretation-row.average {
    border-color: #f59e0b;
}

.interpretation-row.caution {
    border-color: #ef4444;
}

.interpretation-score {
    text-align: center;
}

.score-range {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.score-level {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-light);
}

.interpretation-description h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.interpretation-description p {
    color: var(--text-light);
    line-height: 1.7;
}

.interpretation-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    justify-content: center;
}

.action-tag {
    display: inline-block;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-dark);
    white-space: nowrap;
}

/* ========================================
   定性効果セクション
======================================== */
.qualitative-effects {
    margin-top: 60px;
    background: var(--bg-light);
    border-radius: 16px;
    padding: 50px;
}

.effects-title {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    color: var(--primary-dark);
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.effects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.effect-item {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
}

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

.effect-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    color: var(--bg-white);
    font-size: 1.75rem;
    margin-bottom: 20px;
}

.effect-item h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.effect-item p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ========================================
   システム機能セクション
======================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.feature-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
    transition: var(--transition);
}

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

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
    border-radius: 50%;
    color: var(--bg-white);
    font-size: 2rem;
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 24px;
}

.feature-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feature-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.feature-item i {
    color: var(--accent-color);
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.feature-item span {
    line-height: 1.7;
    color: var(--text-light);
}

/* ========================================
   導入効果セクション
======================================== */
.roi-highlight {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.roi-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.roi-number {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 12px;
}

.roi-number span {
    font-size: 2rem;
}

.roi-ratio {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 12px;
}

.roi-label {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
    opacity: 0.95;
}

.roi-detail {
    font-size: 0.875rem;
    opacity: 0.85;
}

/* タブ */
.benefits-tabs {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.tabs-header {
    display: flex;
    background: var(--bg-light);
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: 20px;
    background: none;
    border: none;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

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

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
}

.tab-btn:hover {
    background: rgba(30, 58, 138, 0.05);
}

.tabs-content {
    padding: 40px;
}

.tab-panel {
    display: none;
}

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

.benefits-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.metric-card {
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    display: flex;
    gap: 20px;
    transition: var(--transition);
}

.metric-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.metric-card.highlight {
    background: linear-gradient(135deg, #ecfdf5, #d1fae5);
    border-color: var(--accent-color);
}

.metric-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    color: var(--bg-white);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.metric-content {
    flex: 1;
}

.metric-content h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.metric-change {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.metric-before,
.metric-after {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
}

.metric-before {
    color: var(--text-light);
}

.metric-after {
    color: var(--accent-color);
}

.metric-progress {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

.metric-result {
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 8px;
}

.metric-impact {
    font-size: 0.875rem;
    color: var(--text-light);
    line-height: 1.6;
}

.metric-total {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--accent-color);
    margin-bottom: 12px;
}

/* 定性効果 */
.qualitative-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.qualitative-section h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.qualitative-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.qualitative-list li {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.qualitative-list i {
    color: var(--accent-color);
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.qualitative-list strong {
    display: block;
    color: var(--primary-dark);
    margin-bottom: 4px;
}

.qualitative-list p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ========================================
   導入実績セクション
======================================== */
.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 40px;
}

.case-study-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
    transition: var(--transition);
}

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

.case-header {
    margin-bottom: 30px;
}

.case-company {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.case-company i {
    font-size: 2rem;
    color: var(--primary-color);
}

.case-company h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.case-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.case-size,
.case-date {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    color: var(--text-light);
}

.case-results {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.case-result-item {
    background: var(--bg-light);
    border-radius: 8px;
    padding: 20px;
    border-left: 4px solid;
}

.case-result-item.excellent {
    border-color: #10b981;
}

.case-result-item.good {
    border-color: #3b82f6;
}

.result-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 8px;
}

.result-value {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.result-value .before,
.result-value .after {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.result-value .before {
    color: var(--text-light);
}

.result-value .after {
    color: var(--accent-color);
}

.result-value .single {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 900;
    color: var(--accent-color);
}

.result-value i {
    color: var(--text-light);
}

.result-change {
    font-weight: 600;
    color: var(--secondary-color);
}

.case-factors h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.case-factors ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.case-factors li {
    padding-left: 24px;
    position: relative;
    color: var(--text-light);
    line-height: 1.7;
}

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

/* ========================================
   導入の流れセクション
======================================== */
.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto 60px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    gap: 40px;
    margin-bottom: 60px;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

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

.timeline-marker {
    flex-shrink: 0;
    width: 120px;
    text-align: center;
}

.timeline-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
    border-radius: 50%;
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 2;
}

.timeline-content {
    flex: 1;
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.timeline-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.timeline-period {
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 16px;
}

.timeline-tasks {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.timeline-tasks li {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
}

.timeline-tasks i {
    color: var(--accent-color);
}

/* KPI管理 */
.kpi-tracking {
    background: var(--bg-light);
    border-radius: 12px;
    padding: 40px;
}

.kpi-tracking h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
}

.kpi-section h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.kpi-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.kpi-section li {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-dark);
    font-weight: 500;
}

.kpi-section i {
    color: var(--accent-color);
}

/* ========================================
   料金プランセクション
======================================== */
.pricing-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.pricing-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
    transition: var(--transition);
}

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

.pricing-card.total {
    background: linear-gradient(135deg, #ecfdf5, #d1fae5);
    border-color: var(--accent-color);
}

.pricing-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
}

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

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 20px;
}

.pricing-amount {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 900;
    color: var(--secondary-color);
    line-height: 1;
}

.pricing-amount span {
    font-size: 1.25rem;
}

.pricing-breakdown {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.breakdown-label {
    font-weight: 600;
    color: var(--text-dark);
}

.breakdown-value {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.breakdown-detail {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 16px;
}

.breakdown-summary {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.breakdown-summary p {
    color: var(--text-dark);
    font-weight: 500;
}

.roi-reminder {
    background: rgba(16, 185, 129, 0.1);
    border: 2px solid var(--accent-color);
    border-radius: 8px;
    padding: 20px;
    margin-top: 20px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.roi-reminder i {
    color: var(--accent-color);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.roi-reminder p {
    line-height: 1.7;
    color: var(--primary-dark);
}

/* コスト最適化オプション */
.pricing-options {
    background: var(--bg-light);
    border-radius: 12px;
    padding: 40px;
}

.pricing-options h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.option-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
}

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

.option-card i {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 16px;
}

.option-card h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.option-card p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
}

.option-savings {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

/* ========================================
   キャンペーンセクション
======================================== */
.campaign {
    background: linear-gradient(135deg, #fff7ed, #fed7aa);
}

.campaign-banner {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 60px;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.campaign-banner::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.1), transparent);
}

.campaign-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
    color: var(--bg-white);
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 700;
    margin-bottom: 24px;
    box-shadow: var(--shadow-md);
}

.campaign-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-dark);
    text-align: center;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.campaign-title i {
    color: var(--secondary-color);
}

.campaign-subtitle {
    font-size: 1.5rem;
    text-align: center;
    color: var(--text-dark);
    margin-bottom: 40px;
}

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

.campaign-details h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 16px;
}

.campaign-details ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.campaign-details li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--text-dark);
    line-height: 1.7;
}

.campaign-details i {
    color: var(--accent-color);
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.campaign-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    background: var(--bg-light);
    padding: 20px;
    border-radius: 8px;
}

.info-item i {
    font-size: 2rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.info-item strong {
    display: block;
    color: var(--primary-dark);
    margin-bottom: 4px;
}

.info-item p {
    color: var(--text-light);
    line-height: 1.6;
}

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

.campaign-note {
    margin-top: 16px;
    font-size: 0.875rem;
    color: var(--text-light);
}

/* ========================================
   お客様の声セクション
======================================== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
    position: relative;
    transition: var(--transition);
}

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

.testimonial-quote {
    position: absolute;
    top: 20px;
    right: 20px;
}

.testimonial-quote i {
    font-size: 3rem;
    color: rgba(30, 58, 138, 0.1);
}

.testimonial-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 24px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-top: 24px;
    border-top: 2px solid var(--border-color);
}

.author-info strong {
    display: block;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 4px;
}

.author-info span {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* ========================================
   CTAセクション
======================================== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
}

.cta-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 20px;
}

.cta-text {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.cta-contact-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.contact-item i {
    color: var(--secondary-color);
}

/* ========================================
   フッター
======================================== */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    color: var(--bg-white);
    margin-bottom: 20px;
    font-weight: 700;
}

.footer-section h3 {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-section h3 i {
    color: var(--secondary-color);
}

.footer-section p {
    line-height: 1.7;
    margin-bottom: 16px;
}

.footer-trademark {
    margin-top: 20px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    line-height: 1.7;
}

.footer-links i {
    color: var(--secondary-color);
    margin-top: 4px;
    flex-shrink: 0;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--bg-white);
}

/* フッターCTAボタン */
.footer-cta-button {
    margin-bottom: 20px;
}

.footer-cta-button .btn {
    width: 100%;
    text-align: center;
    justify-content: center;
}

.btn-md {
    padding: 14px 28px;
    font-size: 1rem;
}

.footer-campaign-badge {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
    padding: 16px;
    border-radius: 8px;
    text-align: center;
    margin-top: 20px;
}

.footer-campaign-badge i {
    font-size: 1.5rem;
    display: block;
    margin-bottom: 8px;
}

.footer-campaign-badge span {
    font-weight: 700;
    line-height: 1.5;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
}

/* ========================================
   トップに戻るボタン
======================================== */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

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

/* ========================================
   アニメーション
======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

.fade-in {
    animation: fadeIn 1s ease forwards;
}

.fade-in.delay-1 {
    animation-delay: 0.2s;
    opacity: 0;
}

.fade-in.delay-2 {
    animation-delay: 0.4s;
    opacity: 0;
}

.fade-in.delay-3 {
    animation-delay: 0.6s;
    opacity: 0;
}

.fade-in.delay-4 {
    animation-delay: 0.8s;
    opacity: 0;
}

/* ========================================
   レスポンシブデザイン
======================================== */
@media (max-width: 1024px) {
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .hero-visual {
        display: none;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-arrow {
        transform: rotate(90deg);
    }
    
    .timeline::before {
        left: 60px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(even) {
        flex-direction: row;
    }
    
    .timeline-marker {
        width: 120px;
    }
    
    .campaign-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--bg-white);
        flex-direction: column;
        align-items: flex-start;
        padding: 40px 20px;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
        gap: 20px;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        gap: 20px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .challenges-grid,
    .dimensions-grid,
    .features-grid,
    .benefits-metrics,
    .qualitative-grid,
    .case-studies-grid {
        grid-template-columns: 1fr;
    }
    
    .interpretation-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .tabs-header {
        flex-direction: column;
    }
    
    .timeline {
        padding-left: 40px;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-marker {
        width: 80px;
    }
    
    .timeline-number {
        width: 80px;
        height: 80px;
        font-size: 0.875rem;
    }
    
    .kpi-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-overview,
    .options-grid {
        grid-template-columns: 1fr;
    }
    
    .campaign-banner {
        padding: 40px 20px;
    }
    
    .campaign-title {
        font-size: 1.75rem;
    }
    
    .campaign-subtitle {
        font-size: 1.125rem;
    }
    
    .cta-title {
        font-size: 1.75rem;
    }
    
    .cta-text {
        font-size: 1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-contact-info {
        flex-direction: column;
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 1.75rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .btn-lg {
        padding: 14px 24px;
        font-size: 1rem;
    }
    
    .roi-number {
        font-size: 3rem;
    }
    
    .metric-total {
        font-size: 2rem;
    }
}