/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-serif);
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #1a2b4a 0%, #2c3e50 50%, #1a2b4a 100%);
    min-height: 100vh;
    overflow-x: hidden;
}


/* Glassmorphism Card */
.glass-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
    border-color: rgba(74, 124, 158, 0.3);
}

/* Glass card in light sections */
.light-section .glass-card {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(74, 124, 158, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.light-section .glass-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    border-color: rgba(74, 124, 158, 0.4);
}

/* Light sections */
.light-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 50%, #f8f9fa 100%);
    color: #333;
}


/* About Hero Section */
.about-hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg,
        rgba(26, 43, 74, 0.9) 0%,
        rgba(44, 62, 80, 0.9) 50%,
        rgba(26, 43, 74, 0.9) 100%),
        url('../bg1.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
    text-align: center;
    position: relative;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

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

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    letter-spacing: 0.1em;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #4a7c9e, #74a8d4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.light-section .section-title {
    color: #1a2b4a;
    background: none;
    -webkit-text-fill-color: initial;
}

.section-subtitle {
    font-size: 1.1rem;
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Mission Section - Center Split Design */
.mission-section {
    padding: 80px 0;
}

.split-content {
    margin-top: 60px;
}

.split-item {
    display: flex;
    align-items: center;
    gap: 60px;
    margin-bottom: 80px;
    opacity: 0;
    transform: translateX(-30px);
    animation: slideInLeft 0.8s ease-out forwards;
}

.split-item:nth-child(2) {
    animation-delay: 0.2s;
}

.split-item:nth-child(3) {
    animation-delay: 0.4s;
}

.split-item.reversed {
    flex-direction: row-reverse;
    transform: translateX(30px);
    animation: slideInRight 0.8s ease-out forwards;
}

.split-item.reversed .split-text {
    text-align: end;
}

.split-icon {
    flex-shrink: 0;
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, #4a7c9e, #74a8d4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: white;
    box-shadow: 0 20px 40px rgba(74, 124, 158, 0.3);
    position: relative;
    
}

.split-icon::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(135deg, #74a8d4, #4a7c9e);
    opacity: 0;
    z-index: -1;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.split-item:hover .split-icon {
    transform: rotate(10deg) scale(1.05);
}

.split-item:hover .split-icon::before {
    opacity: 0.5;
    transform: scale(1.2);
}

.split-text {
    flex: 1;
}

.split-text h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #1a2b4a;
    position: relative;
    display: inline-block;
}

.split-text h4 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #1a2b4a;
    margin-bottom: 15px;
    line-height: 1.3;
}

.split-text h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #4a7c9e, #74a8d4);
    border-radius: 2px;
}

.split-text p {
    font-size: 1.25rem;
    font-weight: 500;
    line-height: 1.6;
    color: #333;
    margin-bottom: 15px;
}

.split-detail {
    font-size: 1rem;
    line-height: 1.7;
    color: #666;
    margin-top: 10px;
}

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Values Section */
.values-section {
    padding: 80px 0;
    position: relative;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.value-card {
    padding: 40px 30px;
    text-align: center;
    color: white;
}

.value-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #74a8d4, #4a7c9e);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 32px;
    color: white;
    box-shadow: 0 10px 30px rgba(74, 124, 158, 0.3);
}

.value-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.value-card > p {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 25px;
    opacity: 0.9;
}

.value-details {
    list-style: none;
    text-align: left;
}

.value-details li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    opacity: 0.8;
}

.value-details i {
    color: #74a8d4;
    font-size: 12px;
}

/* Company Info Section */
.company-info {
    padding: 80px 0;
}

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

.company-details {
    padding: 40px;
}

.info-grid {
    display: grid;
    gap: 20px;
}

.info-item {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 20px;
    padding: 15px 0;
    border-bottom: 1px solid rgba(74, 124, 158, 0.1);
}

.info-item:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 600;
    color: #4a7c9e;
    font-size: 0.95rem;
}

.info-value {
    color: #333;
    line-height: 1.6;
}

.company-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.feature-card {
    padding: 30px 25px;
    text-align: center;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4a7c9e, #74a8d4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 24px;
    color: white;
    box-shadow: 0 8px 25px rgba(74, 124, 158, 0.3);
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #1a2b4a;
}

.feature-card p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #666;
}

/* Roadmap Section */
.roadmap-section {
    padding: 80px 0;
    position: relative;
}

.roadmap-section .section-title,
.roadmap-section .section-subtitle {
    color: white;
}

.roadmap-timeline {
    position: relative;
    margin-top: 60px;
}

.roadmap-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, #74a8d4, #4a7c9e);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 60px;
    position: relative;
}

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

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 0;
    margin-right: 60px;
    text-align: right;
}

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

.timeline-marker {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #4a7c9e, #74a8d4);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    position: relative;
    z-index: 2;
    box-shadow: 0 10px 30px rgba(74, 124, 158, 0.3);
}

.timeline-item.active .timeline-marker {
    background: linear-gradient(135deg, #74a8d4, #4a7c9e);
    box-shadow: 0 15px 40px rgba(74, 124, 158, 0.4);
    transform: scale(1.1);
}

.timeline-marker .phase {
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1;
}

.timeline-marker .year {
    font-size: 0.8rem;
    opacity: 0.9;
    margin-top: 2px;
    font-weight: 500;
}

.timeline-content {
    flex: 1;
    padding: 30px;
    color: white;
    max-width: 450px;
}

.timeline-content h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.timeline-content p {
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 20px;
    opacity: 0.9;
}

.timeline-content ul {
    list-style: none;
}

.timeline-content li {
    padding: 6px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    opacity: 0.8;
}

.timeline-content li i.fa-check {
    color: #74a8d4;
}

.timeline-content li i.fa-clock {
    color: #ffba08;
}

/* Team Section */
.team-section {
    padding: 80px 0;
}

.team-content {
    display: grid;
    gap: 50px;
}

.team-message {
    padding: 50px 40px;
    text-align: center;
}

.team-message h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 30px;
    color: #1a2b4a;
}

.team-message blockquote {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #444;
    font-style: italic;
    margin-bottom: 30px;
    position: relative;
}

.team-message blockquote::before {
    content: '"';
    font-size: 4rem;
    color: #4a7c9e;
    position: absolute;
    top: -20px;
    left: -30px;
    opacity: 0.3;
}

.message-author {
    text-align: right;
    border-top: 1px solid rgba(74, 124, 158, 0.2);
    padding-top: 20px;
}

.author-name {
    font-weight: 600;
    color: #1a2b4a;
    display: block;
    margin-bottom: 5px;
}

.author-note {
    font-size: 0.9rem;
    color: #666;
}

.team-expertise h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 30px;
    text-align: center;
    color: #1a2b4a;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.expertise-card {
    padding: 30px 25px;
    text-align: center;
}

.expertise-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4a7c9e, #74a8d4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 24px;
    color: white;
    box-shadow: 0 8px 25px rgba(74, 124, 158, 0.3);
}

.expertise-card h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #1a2b4a;
}

.expertise-card p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #666;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }

    .hero-title {
        font-size: 3rem;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        flex-direction: column;
        text-align: center;
    }

    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin: 20px 0 0 0;
        text-align: center;
    }

    .roadmap-timeline::before {
        display: none;
    }
}

/* ハンバーガーメニュー表示切り替え - 1024px以下 */
@media (max-width: 1024px) {
    .desktop-nav {
        display: none;
    }

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

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

/* モバイルレイアウト調整 - 768px以下 */
@media (max-width: 768px) {
    /* Mission Section Mobile */
    .split-item,
    .split-item.reversed {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }

    .split-item.reversed .split-text {
        text-align: center;
    }

    .split-icon {
        width: 120px;
        height: 120px;
        font-size: 48px;
    }

    .split-text h3 {
        font-size: 1.5rem;
    }

    .split-text h4 {
        font-size: 1.2rem;
    }

    .split-text h3::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .split-text p {
        font-size: 1.1rem;
    }

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

    .hero-subtitle {
        font-size: 1.1rem;
    }

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

    .mission-grid,
    .values-grid,
    .company-features,
    .expertise-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .info-item {
        grid-template-columns: 1fr;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
        max-width: 100%;
    }

    /* Mission Section Mobile Small */
    .split-item {
        margin-bottom: 60px;
    }

    .split-icon {
        width: 100px;
        height: 100px;
        font-size: 40px;
    }

    .split-text h3 {
        font-size: 1.3rem;
    }

    .split-text h4 {
        font-size: 1.1rem;
    }

    .split-text p {
        font-size: 1rem;
    }

    .split-detail {
        font-size: 0.95rem;
    }

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

    .section-title {
        font-size: 1.8rem;
    }

    .mission-card,
    .value-card,
    .feature-card,
    .expertise-card {
        padding: 25px 20px;
    }

    .timeline-marker {
        width: 100px;
        height: 100px;
    }

    .timeline-content {
        padding: 20px 15px;
        max-width: 100%;
        width: 100%;
        box-sizing: border-box;
    }

    .timeline-content h3 {
        font-size: 1.2rem;
    }

    .timeline-content p {
        font-size: 0.9rem;
    }

    .timeline-content li {
        font-size: 0.85rem;
    }

    .team-message {
        padding: 40px 25px;
    }

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

    .win-win-section .section-subtitle {
        font-size: 1rem;
        padding: 0 20px;
    }
}

/* Greeting Section */
.greeting-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 50%, #f8f9fa 100%);
}

.greetings-container {
    margin-top: 50px;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.greeting-item {
    display: flex;
    align-items: flex-start;
    gap: 40px;
    padding: 40px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    border: 1px solid rgba(74, 124, 158, 0.1);
    transition: all 0.3s ease;
}

.greeting-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: rgba(74, 124, 158, 0.3);
}

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

.greeting-photo {
    flex-shrink: 0;
    width: 200px;
    height: 200px;
    border-radius: 10px;
    overflow: hidden;
    border: 4px solid rgba(74, 124, 158, 0.2);
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    display: flex;
    align-items: center;
    justify-content: center;
}

.greeting-photo .director-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-placeholder {
    color: rgba(74, 124, 158, 0.4);
    font-size: 4rem;
}

.greeting-content {
    flex: 1;
    min-width: 0;
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

.director-info {
    margin-bottom: 25px;
}

.director-company {
    display: block;
    font-size: 0.9rem;
    color: #4a7c9e;
    font-weight: 500;
    margin-bottom: 5px;
}

.director-position {
    display: block;
    font-size: 1rem;
    color: #666;
    margin-bottom: 10px;
}

.director-name {
    font-size: 1.8rem;
    font-weight: 700;
    color: #1a2b4a;
    margin: 0;
    margin-bottom: 20px;
}

.greeting-message {
    color: #333;
    line-height: 1.8;
    font-size: 1.1rem;
    width: 100%;
    max-width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.greeting-message p {
    margin-bottom: 1.2em;
    width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.greeting-message p:last-child {
    margin-bottom: 0;
}

/* Greeting Section Responsive */
@media (max-width: 1024px) {
    .greeting-item {
        flex-direction: column !important;
        text-align: center;
        gap: 30px;
        padding: 30px 25px;
        width: 100%;
        box-sizing: border-box;
    }

    .greeting-photo {
        width: 180px;
        height: 180px;
        margin: 0 auto;
    }

    .director-name {
        font-size: 1.6rem;
    }

    .greeting-message {
        font-size: 1.05rem;
        text-align: left;
    }
}

@media (max-width: 768px) {
    .greeting-photo {
        width: 150px;
        height: 150px;
    }

    .director-name {
        font-size: 1.5rem;
    }

    .greeting-message {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .greetings-container {
        gap: 20px;
    }

    .greeting-item {
        padding: 20px 12px !important;
        border-radius: 12px;
        word-wrap: break-word;
        overflow-wrap: break-word;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }

    .greeting-photo {
        width: 100px;
        height: 100px;
    }

    .greeting-content {
        width: 100%;
        padding: 0 5px;
    }

    .director-company {
        font-size: 0.8rem;
    }

    .director-position {
        font-size: 0.85rem;
    }

    .director-name {
        font-size: 1.1rem;
        word-wrap: break-word;
        line-height: 1.4;
    }

    .greeting-message {
        font-size: 0.85rem;
        line-height: 1.7;
        word-wrap: break-word;
    }

    .greeting-message p {
        margin-bottom: 0.8em;
    }
}

/* Win-Win Section */
.win-win-section {
    padding: 80px 0;
    background: linear-gradient(135deg,
        rgba(26, 43, 74, 0.9) 0%,
        rgba(44, 62, 80, 0.9) 100%),
        url('../../images/bg2.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
    text-align: center;
    position: relative;
}

.win-win-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(102, 126, 234, 0.1);
    pointer-events: none;
}

.win-win-section .section-header {
    position: relative;
    z-index: 1;
}

.win-win-section .section-title {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.win-win-section .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto;
}