/* ========================================
   グローバル設定
======================================== */
:root {
    /* 日塗工52-40L色（青緑系）をメインカラーとして設定 */
    --primary-color: #5B9B8E;
    --primary-dark: #4A7D73;
    --primary-light: #7CB3A6;
    --secondary-color: #2C3E50;
    --accent-color: #E8B86D;
    --text-color: #333333;
    --text-light: #666666;
    --text-lighter: #999999;
    --bg-light: #F8F9FA;
    --bg-white: #FFFFFF;
    --border-color: #E0E0E0;
    --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);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-color);
    line-height: 1.7;
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

/* ========================================
   ナビゲーション
======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

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

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    height: 40px;
    width: auto;
}

.company-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 5px 0;
    transition: var(--transition);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 4px 0;
}

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

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

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

/* ========================================
   ヒーローセクション
======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--bg-white);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(255,255,255,.03) 35px, rgba(255,255,255,.03) 70px);
    opacity: 0.5;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.1) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

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

.hero-subtitle {
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    opacity: 0.9;
}

.hero-main {
    font-size: 4rem;
    font-weight: 900;
    letter-spacing: 0.05em;
    text-shadow: 2px 4px 8px rgba(0, 0, 0, 0.2);
}

.hero-description {
    margin-top: 2rem;
    font-size: 1.2rem;
    line-height: 1.8;
    opacity: 0.95;
}

.hero-buttons {
    margin-top: 3rem;
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
    display: inline-block;
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: transparent;
    border-color: var(--bg-white);
    color: var(--bg-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background-color: transparent;
    border-color: var(--bg-white);
    color: var(--bg-white);
}

.btn-secondary:hover {
    background-color: var(--bg-white);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--bg-white);
    opacity: 0.8;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ========================================
   セクション共通スタイル
======================================== */
section {
    padding: 6rem 0;
}

section:nth-child(even) {
    background-color: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-label {
    display: inline-block;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* ========================================
   会社概要
======================================== */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.overview-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
}

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

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

.overview-icon i {
    font-size: 1.8rem;
}

.overview-card h3 {
    font-size: 1.1rem;
    color: var(--secondary-color);
    margin-bottom: 0.8rem;
    font-weight: 700;
}

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

/* ========================================
   経営理念
======================================== */
.philosophy {
    background: linear-gradient(135deg, var(--bg-light) 0%, #E8F4F1 100%);
}

.philosophy-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.philosophy-item {
    background: var(--bg-white);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.philosophy-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-white);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
}

.philosophy-heading {
    font-size: 1.8rem;
    color: var(--secondary-color);
    font-weight: 700;
    line-height: 1.5;
}

.philosophy-values {
    padding: 3rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.value-card {
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 12px;
    transition: var(--transition);
}

.value-card:hover {
    background: var(--primary-light);
    color: var(--bg-white);
    transform: translateY(-5px);
}

.value-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    border-radius: 50%;
    color: var(--bg-white);
}

.value-icon i {
    font-size: 1.5rem;
}

.value-card:hover .value-icon {
    background: var(--bg-white);
    color: var(--primary-color);
}

.value-card p {
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ========================================
   DXビジョン
======================================== */
.dx-vision {
    background: var(--bg-white);
}

.dx-vision-content {
    max-width: 900px;
    margin: 0 auto;
}

.dx-vision-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-white);
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    margin-bottom: 3rem;
}

.dx-vision-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
}

.dx-vision-icon i {
    font-size: 2.5rem;
}

.dx-vision-card h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.dx-vision-text {
    font-size: 1.2rem;
    line-height: 1.8;
}

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

.pillar-item {
    display: flex;
    gap: 1.5rem;
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    transition: var(--transition);
}

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

.pillar-number {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary-color);
    opacity: 0.3;
}

.pillar-content i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: block;
}

.pillar-content h4 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.pillar-content p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ========================================
   DX戦略モデル
======================================== */
.dx-strategy {
    background: var(--bg-light);
}

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

.strategy-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.strategy-card::before {
    content: attr(data-number);
    position: absolute;
    top: -20px;
    right: -20px;
    font-size: 8rem;
    font-weight: 900;
    color: var(--primary-color);
    opacity: 0.05;
}

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

.strategy-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 16px;
    color: var(--bg-white);
}

.strategy-icon i {
    font-size: 2rem;
}

.strategy-card h3 {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.strategy-card ul {
    list-style: none;
    padding: 0;
}

.strategy-card li {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
    position: relative;
    color: var(--text-light);
    line-height: 1.6;
}

.strategy-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* ========================================
   ロードマップ（タイムライン）
======================================== */
.roadmap {
    background: var(--bg-white);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

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

.timeline-item {
    position: relative;
    margin-bottom: 4rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.timeline-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    box-shadow: 0 0 0 8px var(--bg-white), var(--shadow-md);
}

.timeline-icon i {
    font-size: 2rem;
}

.timeline-content {
    width: calc(50% - 60px);
    padding: 2.5rem;
    background: var(--bg-white);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: auto;
    margin-right: 60px;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-right: auto;
    margin-left: 60px;
}

.timeline-content:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.timeline-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-white);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.timeline-content h3 {
    font-size: 1.8rem;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

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

.goal-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.goal-item i {
    color: var(--primary-color);
    margin-top: 4px;
    flex-shrink: 0;
}

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

/* ========================================
   具体的なDX施策
======================================== */
.initiatives {
    background: var(--bg-light);
}

.initiatives-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.initiative-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.initiative-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 3rem;
    font-weight: 900;
    color: var(--primary-color);
    opacity: 0.1;
}

.initiative-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-color), #D4A056);
    border-radius: 50%;
    color: var(--bg-white);
}

.initiative-icon i {
    font-size: 2rem;
}

.initiative-card h3 {
    font-size: 1.4rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-weight: 700;
}

.initiative-description {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.initiative-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    display: inline-block;
    background: var(--bg-light);
    color: var(--primary-color);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* ========================================
   推進体制
======================================== */
.organization {
    background: var(--bg-white);
}

.org-structure {
    max-width: 800px;
    margin: 0 auto 4rem;
}

.org-level {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.org-arrow {
    text-align: center;
    color: var(--primary-color);
    font-size: 2rem;
    margin: 1rem 0;
}

.org-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
    flex: 1;
    max-width: 400px;
}

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

.org-owner .org-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-white);
}

.org-leader .org-card {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    color: var(--bg-white);
}

.org-role {
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.org-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
}

.org-icon i {
    font-size: 2.5rem;
}

.org-members .org-icon {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    color: var(--bg-white);
}

.org-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.org-responsibilities {
    list-style: none;
    padding: 0;
    text-align: left;
}

.org-responsibilities li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.org-responsibilities li::before {
    content: '●';
    position: absolute;
    left: 0;
    opacity: 0.6;
}

.org-owner .org-responsibilities li::before,
.org-leader .org-responsibilities li::before {
    color: var(--bg-white);
}

.org-members .org-responsibilities li {
    color: var(--text-light);
}

.org-members .org-responsibilities li::before {
    color: var(--primary-color);
}

/* DX人材育成 */
.talent-development {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem;
    background: var(--bg-light);
    border-radius: 16px;
}

.talent-development h3 {
    font-size: 1.8rem;
    color: var(--secondary-color);
    margin-bottom: 2rem;
    text-align: center;
}

.talent-development h3 i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

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

.talent-item {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
}

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

.talent-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-color), #D4A056);
    border-radius: 50%;
    color: var(--bg-white);
}

.talent-icon i {
    font-size: 1.8rem;
}

.talent-item h4 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 0.8rem;
}

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

/* ========================================
   ビジネスモデル
======================================== */
.business-model {
    background: var(--bg-light);
}

.business-canvas {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.canvas-row {
    display: flex;
    gap: 2rem;
}

.canvas-row-dual {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.canvas-item {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    flex: 1;
}

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

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

.canvas-item h4 {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.canvas-item i {
    font-size: 1.6rem;
}

.canvas-item ul {
    list-style: none;
    padding: 0;
}

.canvas-item li {
    padding: 0.7rem 0;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.canvas-item li::before {
    content: '▸';
    position: absolute;
    left: 0;
    font-weight: 700;
}

.canvas-primary li::before {
    color: var(--bg-white);
}

.canvas-item:not(.canvas-primary) li {
    color: var(--text-light);
}

.canvas-item:not(.canvas-primary) li::before {
    color: var(--primary-color);
}

/* ========================================
   KPI
======================================== */
.kpi {
    background: var(--bg-white);
}

.kpi-content {
    max-width: 900px;
    margin: 0 auto;
}

.kpi-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.kpi-item {
    display: flex;
    gap: 2rem;
    padding: 2.5rem;
    background: var(--bg-light);
    border-radius: 16px;
    border-left: 5px solid var(--primary-color);
    transition: var(--transition);
}

.kpi-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
    background: var(--bg-white);
}

.kpi-icon {
    flex-shrink: 0;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    color: var(--bg-white);
}

.kpi-icon i {
    font-size: 2rem;
}

.kpi-details h4 {
    font-size: 1.4rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-weight: 700;
}

.kpi-target {
    color: var(--text-light);
    line-height: 1.8;
    font-size: 1.05rem;
}

.kpi-target strong {
    color: var(--primary-color);
    font-weight: 700;
}

/* ========================================
   経営者メッセージ
======================================== */
.message {
    background: linear-gradient(135deg, var(--bg-light) 0%, #E8F4F1 100%);
}

.message-content {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-white);
    padding: 4rem;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.message-profile {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 3px solid var(--primary-color);
}

.message-icon {
    flex-shrink: 0;
}

.message-icon i {
    font-size: 5rem;
    color: var(--primary-color);
}

.message-info h3 {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.message-info h2 {
    font-size: 2.2rem;
    color: var(--secondary-color);
    font-weight: 700;
}

.message-text h3 {
    font-size: 1.8rem;
    color: var(--secondary-color);
    margin-bottom: 2rem;
    font-weight: 700;
}

.message-text p {
    color: var(--text-color);
    line-height: 2;
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.message-text strong {
    color: var(--primary-color);
    font-weight: 700;
}

.message-closing {
    margin-top: 2.5rem;
    font-weight: 600;
}

.message-signature {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
    text-align: right;
}

.message-signature p {
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.signature-name {
    font-size: 1.2rem;
    color: var(--secondary-color);
    font-weight: 700;
}

/* ========================================
   フッター
======================================== */
.footer {
    background: var(--secondary-color);
    color: var(--bg-white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

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

.footer-logo {
    height: 50px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-top: 1rem;
}

.footer-tagline {
    opacity: 0.8;
    line-height: 1.8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--primary-light);
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section li {
    margin-bottom: 0.8rem;
}

.footer-section a {
    color: var(--bg-white);
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-section a:hover {
    opacity: 1;
    color: var(--primary-light);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    opacity: 0.7;
    margin-bottom: 0.5rem;
}

.footer-note {
    font-size: 0.9rem;
    opacity: 0.6;
}

/* ========================================
   トップに戻るボタン
======================================== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    z-index: 999;
}

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

.scroll-top.visible {
    display: flex;
}

/* ========================================
   レスポンシブデザイン
======================================== */
@media (max-width: 1200px) {
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .initiatives-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .timeline::before {
        left: 40px;
    }

    .timeline-marker {
        left: 40px;
        transform: none;
    }

    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        width: calc(100% - 100px);
        margin-left: 100px;
        margin-right: 0;
    }
    
    .talent-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 900px) {
    .initiatives-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .talent-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    section {
        padding: 4rem 0;
    }

    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--bg-white);
        flex-direction: column;
        padding: 2rem;
        gap: 0;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
    }

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

    .nav-link {
        padding: 1rem 0;
        border-bottom: 1px solid var(--border-color);
    }

    .hero-main {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .section-title {
        font-size: 2rem;
    }

    .overview-grid,
    .strategy-grid,
    .initiatives-grid {
        grid-template-columns: 1fr;
    }

    .values-grid,
    .dx-vision-pillars,
    .talent-grid,
    .kpi-categories,
    .initiatives-grid {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-marker {
        left: 20px;
    }

    .timeline-icon {
        width: 60px;
        height: 60px;
    }

    .timeline-icon i {
        font-size: 1.5rem;
    }

    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        width: calc(100% - 70px);
        margin-left: 70px;
    }

    .org-members {
        flex-direction: column;
    }

    .canvas-row-dual {
        grid-template-columns: 1fr;
    }

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

    .message-content {
        padding: 2rem;
    }

    .message-profile {
        flex-direction: column;
        text-align: center;
    }

    .message-signature {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-main {
        font-size: 2rem;
    }

    .company-name {
        font-size: 0.95rem;
    }

    .logo {
        height: 35px;
    }

    .kpi-notice {
        flex-direction: column;
        padding: 2rem;
    }
}

/* ========================================
   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 0.8s ease-out;
}

/* スクロール時のアニメーション（JavaScriptで制御） */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}