/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Hiragino Sans', 'ヒラギノ角ゴ ProN W3', 'Hiragino Kaku Gothic ProN', 'メイリオ', Meiryo, sans-serif;
    line-height: 1.6;
    color: #2E3A47;
    background: linear-gradient(135deg, #E8F5E8 0%, #C8E6C9 100%);
    overflow-x: hidden;
}

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

/* Loading Screen Animation */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, #1B5E20 0%, #2E7D32 50%, #388E3C 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.skip-button-container {
    position: absolute;
    top: 2rem;
    right: 2rem;
    z-index: 10001;
}

.skip-button {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.skip-button:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.8);
    transform: translateY(-2px);
}

.video-animation-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#logo-animation-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    transform: scale(1.1) translate(0, 0);
    transform-origin: center center;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: transform 0.3s ease;
}

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

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #333;
}

.logo-img {
    height: 40px;
    width: auto;
    margin-right: 0;
    object-fit: contain;
}

.tagline {
    font-size: 0.9rem;
    color: #9BC53D;
    margin-top: 5px;
    font-weight: 500;
}

/* Navigation */
.nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav a:hover,
.nav a.active {
    background-color: #4CAF50;
    color: white;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    position: relative;
    background: linear-gradient(135deg, #1B5E20 0%, #2E7D32 50%, #388E3C 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.particle-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="1" fill="%23ffffff" opacity="0.3"/></svg>') repeat;
    animation: float 20s infinite linear;
}

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

.hero-title {
    font-size: clamp(1.8rem, 5vw, 3rem);
    margin-bottom: 2rem;
    font-weight: 300;
    opacity: 0;
    transform: translateY(50px);
}

.hero-message {
    margin-bottom: 3rem;
}

.hero-subtitle {
    font-size: clamp(1rem, 3vw, 1.4rem);
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateX(-50px);
}

.hero-subtitle:nth-child(2) {
    transform: translateX(50px);
}

.hero-subtitle:nth-child(3) {
    transform: translateX(-50px);
}

.cta-container {
    opacity: 0;
    transform: translateY(30px);
}

.cta-button {
    display: inline-block;
    background: linear-gradient(45deg, #4CAF50, #9BC53D);
    color: white;
    padding: 1.2rem 3rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(76, 175, 80, 0.4);
}

/* Concept Showcase */
.concept-showcase {
    padding: 6rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.concept-showcase h2 {
    text-align: center;
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    margin-bottom: 4rem;
    color: #2c5aa0;
}

.concept-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    margin-bottom: 5rem;
}

.concept-card {
    background: white;
    padding: 3rem 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-align: center;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(50px);
}

.concept-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}


.concept-card h3 {
    font-size: clamp(1.1rem, 3vw, 1.3rem);
    color: #2c5aa0;
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.concept-card p {
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    line-height: 1.7;
    color: #666;
}

/* Vision Mission New */
.vision-mission-new {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 4rem;
}

.vision-new,
.mission-new {
    background: linear-gradient(135deg, #2c5aa0, #667eea);
    color: white;
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    opacity: 0;
    transform: scale(0.8);
}

.vision-new h3,
.mission-new h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #ff7043;
}

.vision-new p,
.mission-new p {
    font-size: 1.2rem;
    line-height: 1.6;
}


/* News Preview */
.news-preview {
    padding: 4rem 0;
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
}

.news-preview h2 {
    font-size: clamp(1.4rem, 4vw, 2.2rem);
    margin-bottom: 2rem;
    color: #2c5aa0;
}

.coming-soon {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 1rem;
}

.newsletter {
    font-size: 1rem;
    color: #888;
    font-style: italic;
}

/* Footer */
.footer {
    background-color: #1a365d;
    color: white;
    padding: 2rem 0;
}

.footer-nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 2rem;
    margin-bottom: 1rem;
}

.footer-nav a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-nav a:hover {
    color: #ff7043;
}

.copyright {
    text-align: center;
    color: #ccc;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
    
    .concept-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .concept-card {
        padding: 2rem 1.5rem;
    }
    
    .vision-mission-new {
        grid-template-columns: 1fr;
    }
    
    /* Mobile video adjustments for Veo watermark */
    #logo-animation-video {
        width: 100%;
        height: 100%;
        transform: scale(1.2) translate(0, 0);
        transform-origin: center center;
    }
    
    .skip-button-container {
        top: 1rem;
        right: 1rem;
    }
    
    .skip-button {
        padding: 0.6rem 1.2rem;
        font-size: 0.8rem;
    }
    
    .footer-nav ul {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
}    line-height: 1.8;
    margin-bottom: 1rem;
}

.legal-content a {
    color: #4CAF50;
    text-decoration: none;
}

.legal-content a:hover {
    text-decoration: underline;
}

/* Philosophy sections */
.philosophy-item {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

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

.philosophy-item h3 {
    font-size: 1.3rem;
    color: #4CAF50;
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

/* Communication diagram styles */
.communication-diagram {
    text-align: center;
    margin: 1rem 0;
}

.traditional-model {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid #9BC53D;
    margin-bottom: 1rem;
}

.traditional-model p {
    font-family: monospace;
    color: #666;
    margin: 0;
}

/* Video container styles */
.video-container {
    margin: 2rem 0;
    text-align: center;
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.video-container video {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero-message p {
        font-size: 1.1rem;
    }
    
    .vision-mission-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-nav ul {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
}