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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Malgun Gothic', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* 헤더 */
header {
    background-color: #fff;
    padding: 40px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.logo-section {
    text-align: center;
}

.logo {
    width: 150px;
    height: 150px;
    margin-bottom: 20px;
    border-radius: 50%;
}

header h1 {
    font-size: 2.5rem;
    color: #000;
    margin-bottom: 10px;
}

.tagline {
    font-size: 1.2rem;
    color: #666;
    letter-spacing: 2px;
    font-weight: 300;
    font-family: 'Courier New', monospace;
    text-align: left;
    max-width: 250px;
    margin: 5px auto;
}

/* 히어로 섹션 */
.hero {
    background: linear-gradient(135deg, #000 0%, #333 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.subtitle {
    font-size: 1.3rem;
    color: #ddd;
}

/* 섹션 공통 스타일 */
section {
    padding: 60px 0;
}

section h3 {
    font-size: 2rem;
    margin-bottom: 30px;
    text-align: center;
    color: #000;
}

/* 소개 섹션 */
.about {
    background-color: #fff;
}

.about p {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    text-align: center;
    line-height: 1.8;
    color: #555;
}

/* 다운로드 섹션 */
.downloads {
    background-color: #f8f9fa;
}

.download-description {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 50px;
}

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

.download-card {
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.download-card h4 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #000;
}

.download-card p {
    color: #666;
    margin-bottom: 25px;
    font-size: 1rem;
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-btn {
    display: inline-block;
    background-color: #000;
    color: #fff;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.download-btn:hover {
    background-color: #333;
}

/* 업데이트 섹션 */
.updates {
    background-color: #fff;
}

.update-list {
    max-width: 800px;
    margin: 0 auto;
}

.update-item {
    display: flex;
    padding: 20px;
    border-bottom: 1px solid #eee;
}

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

.update-item .date {
    font-weight: 600;
    color: #000;
    min-width: 100px;
}

.update-item .content {
    color: #555;
}

/* 푸터 */
footer {
    background-color: #000;
    color: #fff;
    padding: 30px 0;
    text-align: center;
}

footer p {
    font-size: 0.9rem;
    color: #aaa;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1.1rem;
    }

    section h3 {
        font-size: 1.5rem;
    }

    .download-grid {
        grid-template-columns: 1fr;
    }

    .logo {
        width: 120px;
        height: 120px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5rem;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

    .logo {
        width: 100px;
        height: 100px;
    }
}