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

:root {
    --primary-color: #E85D3C;
    --secondary-color: #F4A259;
    --accent-color: #FF9B71;
    --dark-color: #2D3142;
    --light-color: #F8F9FA;
    --white: #FFFFFF;
    --text-color: #333333;
    --text-light: #666666;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text-color);
    line-height: 1.8;
    overflow-x: hidden;
}

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

/* 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, #E85D3C 0%, #F4A259 50%, #FF9B71 100%);
    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(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,112C1248,107,1344,117,1392,122.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.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), transparent 60%);
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: var(--white);
    padding: 0 20px;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    margin-bottom: 24px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 24px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero-title .highlight {
    display: inline-block;
    background: linear-gradient(90deg, #FFFFFF, #FFE5D9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.3rem;
    font-weight: 400;
    margin-bottom: 40px;
    opacity: 0.95;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border: 2px solid var(--white);
    backdrop-filter: blur(10px);
}

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

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    font-size: 24px;
    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 */
.section {
    padding: 100px 0;
}

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

.section-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dark-color);
    margin-bottom: 16px;
    line-height: 1.4;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

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

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.problem-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.problem-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 36px;
}

.problem-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 16px;
}

.problem-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ソリューションセクション */
.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.solution-visual {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 60px 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    color: var(--white);
}

.solution-visual i {
    font-size: 80px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.solution-visual-text {
    margin-top: 30px;
}

.visual-step {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 16px 24px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    margin: 10px 0;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.visual-arrow {
    font-size: 30px;
    margin: 15px 0;
    opacity: 0.8;
}

.solution-text h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.solution-text p {
    color: var(--text-light);
    margin-bottom: 30px;
    font-size: 1.05rem;
}

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

.solution-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    font-size: 1.05rem;
    color: var(--text-color);
}

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

/* 活動概要セクション */
.overview-section {
    background: var(--light-color);
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 20px;
    align-items: center;
}

.overview-card {
    background: var(--white);
    padding: 40px 20px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    position: relative;
    transition: all 0.3s ease;
    grid-column: span 2;
}

.overview-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.overview-arrow {
    grid-column: span 1;
    text-align: center;
    font-size: 28px;
    color: var(--secondary-color);
}

.overview-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.2rem;
    border: 4px solid var(--white);
}

.overview-icon {
    font-size: 48px;
    color: var(--primary-color);
    margin: 20px 0;
}

.overview-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 12px;
}

.overview-card p {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* 設備セクション */
.equipment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.equipment-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.equipment-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.equipment-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.equipment-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, rgba(232, 93, 60, 0.1), rgba(244, 162, 89, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 36px;
}

.equipment-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 16px;
    line-height: 1.5;
}

.equipment-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.equipment-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* スケジュールセクション */
.schedule-section {
    background: var(--light-color);
}

.timeline {
    max-width: 800px;
    margin: 40px auto 0;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: 50px;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 0;
}

.timeline-dot {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    border: 6px solid var(--white);
    box-shadow: 0 4px 15px rgba(232, 93, 60, 0.3);
}

.timeline-content {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.timeline-phase {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.timeline-content h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 12px;
}

.timeline-content p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 12px;
}

.timeline-tag {
    display: inline-block;
    background: rgba(232, 93, 60, 0.1);
    color: var(--primary-color);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* 協力依頼セクション */
.cooperation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.cooperation-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.cooperation-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.cooperation-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 36px;
}

.cooperation-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 16px;
}

.cooperation-card p {
    color: var(--text-light);
    line-height: 1.8;
}

.cooperation-note {
    background: linear-gradient(135deg, rgba(232, 93, 60, 0.05), rgba(244, 162, 89, 0.05));
    border-left: 5px solid var(--primary-color);
    padding: 30px 40px;
    border-radius: 15px;
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

.cooperation-note-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 28px;
}

.cooperation-note-content h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 12px;
}

.cooperation-note-content p {
    color: var(--text-light);
    line-height: 1.8;
}

.cooperation-note-content strong {
    color: var(--primary-color);
}

/* お問い合わせセクション */
.contact-section {
    background: var(--light-color);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-top: 40px;
}

.contact-info {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.org-name {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--dark-color);
    margin-bottom: 8px;
}

.org-representative {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--light-color);
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-item-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 20px;
}

.contact-item-content {
    flex: 1;
}

.contact-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 6px;
}

.contact-value {
    font-size: 1.05rem;
    color: var(--text-color);
    line-height: 1.7;
}

.contact-value a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.contact-value a:hover {
    text-decoration: underline;
}

.cta-box {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 50px 40px;
    border-radius: 20px;
    text-align: center;
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.cta-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.cta-box h3 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.6;
}

.cta-box p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 30px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-cta {
    background: var(--white);
    color: var(--primary-color);
    justify-content: center;
}

.btn-cta:hover {
    background: var(--light-color);
    transform: translateY(-3px);
}

.btn-cta-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border: 2px solid var(--white);
    backdrop-filter: blur(10px);
    justify-content: center;
}

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

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

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-org-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
}

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

.footer-bottom {
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* アニメーション */
.fade-in {
    animation: fadeIn 1s ease-out;
}

.fade-in-delay-1 {
    animation: fadeIn 1s ease-out 0.2s backwards;
}

.fade-in-delay-2 {
    animation: fadeIn 1s ease-out 0.4s backwards;
}

.fade-in-delay-3 {
    animation: fadeIn 1s ease-out 0.6s backwards;
}

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

.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.6s ease;
}

.fade-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-right {
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.6s ease;
}

.fade-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* レスポンシブ */
@media (max-width: 1024px) {
    .overview-grid {
        grid-template-columns: 1fr;
    }
    
    .overview-arrow {
        transform: rotate(90deg);
        margin: 10px 0;
    }
    
    .overview-card {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .solution-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .equipment-grid,
    .problem-grid,
    .cooperation-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-dot {
        width: 40px;
        height: 40px;
        border: 4px solid var(--white);
    }
    
    .footer-content {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 15px;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .cooperation-note {
        flex-direction: column;
        padding: 20px;
    }
    
    .contact-info,
    .cta-box {
        padding: 30px 20px;
    }
}