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

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.navigation {
    margin-bottom: 30px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #666;
    text-decoration: none;
    font-size: 1rem;
    padding: 10px 20px;
    border-radius: 8px;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.back-link:hover {
    color: #333;
    background: #f8f9fa;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    text-decoration: none;
}

.back-link i {
    font-size: 0.9rem;
}

.vision-section {
    text-align: center;
    background: white;
    border-radius: 20px;
    padding: 60px 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.main-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 60px;
    letter-spacing: -0.5px;
}

.vision-infographic {
    position: relative;
    width: 100%;
    height: 600px;
    max-width: 800px;
    margin: 0 auto;
}

/* 중앙 로고 */
.center-logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
}

.logo-container {
    width: 200px;
    height: 200px;
    background: white;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    position: relative;
}

.logo-icon {
    width: 60px;
    height: 60px;
    position: relative;
    margin-bottom: 15px;
}

.roof {
    width: 60px;
    height: 25px;
    background: #ff6b35;
    border-radius: 30px 30px 0 0;
    position: absolute;
    top: 0;
}

.book {
    width: 50px;
    height: 35px;
    background: #4CAF50;
    border-radius: 0 0 25px 25px;
    position: absolute;
    bottom: 0;
    left: 5px;
}

.logo-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    text-align: center;
    line-height: 1.3;
}

.center-play {
    position: absolute;
    bottom: -10px;
    color: #ff6b35;
}

/* 비전 카드들 */
.vision-card {
    position: absolute;
    width: 180px;
    height: 180px;
    background: white;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    z-index: 5;
}

.card-1 { top: 50px; left: 50px; }
.card-2 { top: 50px; right: 50px; }
.card-3 { bottom: 50px; right: 50px; }
.card-4 { bottom: 50px; left: 50px; }

.card-arc {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid transparent;
}

.orange-arc {
    border-top-color: #ff6b35;
    border-left-color: #ff6b35;
    transform: rotate(-45deg);
}

.yellow-arc {
    border-top-color: #ffd700;
    border-right-color: #ffd700;
    transform: rotate(45deg);
}

.blue-arc {
    border-bottom-color: #2196F3;
    border-right-color: #2196F3;
    transform: rotate(135deg);
}

.green-arc {
    border-bottom-color: #4CAF50;
    border-left-color: #4CAF50;
    transform: rotate(-135deg);
}

.card-content {
    text-align: center;
    padding: 20px;
    z-index: 2;
}

.card-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 8px;
}

.card-content p {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.4;
}

.play-button {
    position: absolute;
    bottom: -8px;
    width: 24px;
    height: 24px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: transform 0.2s ease;
}

.play-button:hover {
    transform: scale(1.1);
}

.card-1 .play-button { color: #ff6b35; }
.card-2 .play-button { color: #ffd700; }
.card-3 .play-button { color: #2196F3; }
.card-4 .play-button { color: #4CAF50; }

/* 연결선 */
.connection-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.connection-lines line {
    stroke: #ccc;
    stroke-width: 2;
    stroke-dasharray: 5,5;
    opacity: 0.6;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .container {
        padding: 20px 10px;
    }
    
    .vision-section {
        padding: 40px 20px;
    }
    
    .main-title {
        font-size: 2rem;
        margin-bottom: 40px;
    }
    
    .vision-infographic {
        height: 500px;
    }
    
    .logo-container {
        width: 150px;
        height: 150px;
    }
    
    .logo-icon {
        width: 45px;
        height: 45px;
    }
    
    .roof {
        width: 45px;
        height: 20px;
    }
    
    .book {
        width: 38px;
        height: 25px;
    }
    
    .logo-text {
        font-size: 1rem;
    }
    
    .vision-card {
        width: 140px;
        height: 140px;
    }
    
    .card-1 { top: 30px; left: 30px; }
    .card-2 { top: 30px; right: 30px; }
    .card-3 { bottom: 30px; right: 30px; }
    .card-4 { bottom: 30px; left: 30px; }
    
    .card-content h3 {
        font-size: 1rem;
    }
    
    .card-content p {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .vision-infographic {
        height: 400px;
    }
    
    .logo-container {
        width: 120px;
        height: 120px;
    }
    
    .vision-card {
        width: 110px;
        height: 110px;
    }
    
    .card-content {
        padding: 15px;
    }
    
    .card-content h3 {
        font-size: 0.9rem;
    }
    
    .card-content p {
        font-size: 0.7rem;
    }
}