:root {
    --color-primary: #1a365d;
    --color-primary-dark: #0f2440;
    --color-secondary: #c9a227;
    --color-secondary-light: #e0b82f;
    --color-accent: #2d5a87;
    --color-bg-main: #f8f9fa;
    --color-bg-light: #eef2f7;
    --color-bg-dark: #1e2a3a;
    --color-text-primary: #2c3e50;
    --color-text-secondary: #5a6c7d;
    --color-text-light: #ffffff;
    --color-border: #d1d9e6;
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-display: 'Zen Kaku Gothic New', sans-serif;
    --font-serif: 'Shippori Mincho', serif;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.16);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-primary);
    background-color: var(--color-bg-main);
    overflow-x: hidden;
}

.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.loaded {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--color-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

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

.loader-text {
    color: var(--color-text-light);
    font-family: var(--font-display);
    font-size: 1rem;
}

.navbar {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: 15px 0;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    padding: 10px 0;
    background: rgba(26, 54, 93, 0.98);
}

.navbar-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
}

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

.brand-text {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-text-light);
    letter-spacing: 0.5px;
}

.navbar-toggler {
    border: 2px solid var(--color-secondary);
    padding: 8px 12px;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23c9a227' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.navbar-nav {
    align-items: center;
}

.nav-link {
    font-family: var(--font-display);
    font-weight: 500;
    color: var(--color-text-light) !important;
    padding: 10px 18px !important;
    margin: 0 3px;
    border-radius: 6px;
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-secondary) !important;
}

.main-content {
    padding-top: 80px;
}

.hero-section {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 50%, var(--color-primary-dark) 100%);
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://upload.wikimedia.org/wikipedia/commons/thumb/b/b2/Skyscrapers_of_Shinjuku_2009_January.jpg/1280px-Skyscrapers_of_Shinjuku_2009_January.jpg') center/cover no-repeat;
    opacity: 0.15;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -50px;
    left: 0;
    right: 0;
    height: 100px;
    background: var(--color-bg-main);
    clip-path: ellipse(80% 100% at 50% 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-text-light);
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero-title span {
    color: var(--color-secondary);
}

.hero-subtitle {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 3rem;
}

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

.stat-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-secondary);
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.btn-primary-custom {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-light) 100%);
    color: var(--color-primary-dark);
    font-family: var(--font-display);
    font-weight: 600;
    padding: 14px 32px;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    display: inline-block;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.btn-primary-custom:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--color-primary-dark);
}

.btn-secondary-custom {
    background: transparent;
    color: var(--color-text-light);
    font-family: var(--font-display);
    font-weight: 500;
    padding: 14px 32px;
    border: 2px solid var(--color-text-light);
    border-radius: 8px;
    text-decoration: none;
    display: inline-block;
    transition: all var(--transition-fast);
}

.btn-secondary-custom:hover {
    background: var(--color-text-light);
    color: var(--color-primary);
}

.section {
    padding: 80px 0;
}

.section-dark {
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-primary-dark) 100%);
    color: var(--color-text-light);
}

.section-gradient {
    background: linear-gradient(180deg, var(--color-bg-main) 0%, var(--color-bg-light) 100%);
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

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

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--color-secondary);
    border-radius: 2px;
}

.section-subtitle {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 1.5rem auto 0;
}

.section-dark .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.feature-card {
    background: var(--color-text-light);
    border-radius: 16px;
    padding: 35px 30px;
    height: 100%;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-border);
}

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

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.feature-icon i {
    font-size: 1.8rem;
    color: var(--color-secondary);
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 15px;
}

.feature-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.course-card {
    background: var(--color-text-light);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-border);
}

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

.course-image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.course-card:hover .course-image img {
    transform: scale(1.08);
}

.course-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--color-secondary);
    color: var(--color-primary-dark);
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 20px;
}

.course-content {
    padding: 25px;
}

.course-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.course-description {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 15px;
    line-height: 1.6;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--color-border);
}

.course-meta span {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.course-meta i {
    margin-right: 5px;
    color: var(--color-secondary);
}

.contact-card {
    background: var(--color-text-light);
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    height: 100%;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-border);
}

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

.contact-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.contact-icon i {
    font-size: 2rem;
    color: var(--color-secondary);
}

.contact-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 15px;
}

.contact-description {
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.contact-link {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.contact-link:hover {
    color: var(--color-secondary);
    text-decoration: underline;
}

.page-hero {
    position: relative;
    padding: 100px 0 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    text-align: center;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/View_of_Tokyo_Tower_from_Roppongi_Hills.jpg/1280px-View_of_Tokyo_Tower_from_Roppongi_Hills.jpg') center/cover no-repeat;
    opacity: 0.1;
}

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

.page-hero-title {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 1rem;
}

.page-hero-subtitle {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    margin: 0 auto;
}

.content-section {
    padding: 60px 0;
}

.content-block {
    background: var(--color-text-light);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.content-block h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--color-bg-light);
}

.content-block h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    color: var(--color-primary);
    margin: 25px 0 15px;
}

.content-block p {
    color: var(--color-text-secondary);
    margin-bottom: 15px;
}

.content-block ul {
    color: var(--color-text-secondary);
    padding-left: 25px;
    margin-bottom: 20px;
}

.content-block ul li {
    margin-bottom: 10px;
}

.faq-section {
    margin-top: 60px;
}

.faq-item {
    background: var(--color-text-light);
    border-radius: 12px;
    margin-bottom: 15px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.faq-question {
    padding: 25px 30px;
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--color-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background var(--transition-fast);
}

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

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--color-secondary);
    transition: transform var(--transition-fast);
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 30px;
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-item.active .faq-answer {
    padding: 0 30px 25px;
    max-height: 500px;
}

.faq-answer p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.site-footer {
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-primary-dark) 100%);
    color: var(--color-text-light);
    margin-top: auto;
}

.footer-top {
    padding: 60px 0 40px;
}

.footer-brand {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.footer-brand-text {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-left: 12px;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-heading {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-secondary);
    display: inline-block;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-size: 0.95rem;
}

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

.footer-bottom {
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright,
.last-updated {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-text-light);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
    z-index: 9998;
    padding: 25px 0;
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    flex-wrap: wrap;
}

.cookie-text h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.cookie-text p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.cookie-text a {
    color: var(--color-accent);
}

.cookie-buttons {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

.btn-cookie {
    font-family: var(--font-display);
    font-weight: 500;
    padding: 12px 28px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-cookie-accept {
    background: var(--color-secondary);
    color: var(--color-primary-dark);
}

.btn-cookie-accept:hover {
    background: var(--color-secondary-light);
}

.btn-cookie-reject {
    background: transparent;
    color: var(--color-text-secondary);
    border: 2px solid var(--color-border);
}

.btn-cookie-reject:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.info-item {
    background: var(--color-bg-light);
    padding: 25px;
    border-radius: 12px;
    border-left: 4px solid var(--color-secondary);
}

.info-item h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--color-primary);
    margin-bottom: 10px;
}

.info-item p {
    color: var(--color-text-secondary);
    margin: 0;
    font-size: 0.95rem;
}

.timeline {
    position: relative;
    padding-left: 30px;
    margin-top: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--color-secondary), var(--color-primary));
    border-radius: 3px;
}

.timeline-item {
    position: relative;
    padding-bottom: 30px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -35px;
    top: 5px;
    width: 14px;
    height: 14px;
    background: var(--color-secondary);
    border-radius: 50%;
    border: 3px solid var(--color-text-light);
    box-shadow: var(--shadow-sm);
}

.timeline-item h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.timeline-item p {
    color: var(--color-text-secondary);
    margin: 0;
}

@media (max-width: 991px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 25px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .page-hero-title {
        font-size: 2.3rem;
    }
    
    .navbar-collapse {
        background: var(--color-primary);
        padding: 20px;
        border-radius: 10px;
        margin-top: 15px;
    }
    
    .nav-link {
        padding: 12px 15px !important;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
}

@media (max-width: 767px) {
    .hero-section {
        min-height: 70vh;
        padding: 40px 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 1.7rem;
    }
    
    .content-block {
        padding: 25px 20px;
    }
    
    .feature-card,
    .contact-card {
        padding: 25px 20px;
    }
    
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
    
    .cookie-buttons {
        width: 100%;
        justify-content: center;
    }
    
    .footer-top {
        padding: 40px 0 30px;
    }
    
    .page-hero {
        padding: 80px 0 60px;
    }
    
    .page-hero-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 575px) {
    .hero-title {
        font-size: 1.7rem;
    }
    
    .btn-primary-custom,
    .btn-secondary-custom {
        padding: 12px 24px;
        font-size: 0.95rem;
    }
    
    .stat-item {
        width: calc(50% - 15px);
    }
    
    .brand-text {
        font-size: 1.1rem;
    }
}