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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: -1;
}

.page-container {
    position: relative;
    z-index: 1;
}

.header {
    text-align: center;
    padding: 60px 20px 40px;
}

.logo-container {
    margin-bottom: 20px;
}

.logo {
    width: 80px;
    height: 80px;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
}

.tagline {
    color: rgba(255, 255, 255, 0.9);
    font-size: 16px;
    font-weight: 400;
    letter-spacing: 0.5px;
    margin-top: 10px;
}

.main-content {
    padding: 20px;
}

h1 {
    text-align: center;
    color: rgba(255, 255, 255, 0.95);
    font-size: 32px;
    font-weight: 300;
    margin-bottom: 10px;
}

.description {
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
    font-size: 16px;
    margin-bottom: 40px;
}

.tile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 20px;
    max-width: 900px;
    margin: 0 auto 40px;
    padding: 0 20px;
}

.tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    padding: 20px;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    color: #333;
    text-align: center;
}

.tile:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.18);
}

.tile-icon {
    font-size: 48px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
}

.tile-icon img {
    max-width: 48px;
    max-height: 48px;
    object-fit: contain;
}

.emoji {
    display: block;
    line-height: 1;
}

.tile-content {
    flex: 1;
}

.tile-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
    line-height: 1.3;
}

.tile-subtitle {
    font-size: 12px;
    color: rgba(0, 0, 0, 0.6);
    margin: 0;
    line-height: 1.2;
}

.page-content {
    max-width: 800px;
    margin: 60px auto 40px;
    padding: 40px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    color: #333;
    line-height: 1.8;
}

.page-content h2 {
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 24px;
    font-weight: 600;
    color: #333;
}

.page-content h2:first-child {
    margin-top: 0;
}

.page-content h3 {
    margin-top: 20px;
    margin-bottom: 10px;
    font-size: 18px;
    font-weight: 600;
    color: #555;
}

.page-content p {
    margin-bottom: 15px;
}

.page-content ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

.page-content li {
    margin-bottom: 8px;
}

.page-content a {
    color: #667eea;
    text-decoration: none;
    border-bottom: 1px solid rgba(102, 126, 234, 0.3);
}

.page-content a:hover {
    border-bottom-color: #667eea;
}

@media (max-width: 768px) {
    .tile-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 15px;
    }

    h1 {
        font-size: 24px;
    }

    .logo {
        width: 60px;
        height: 60px;
    }

    .page-content {
        margin: 40px 20px;
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 40px 20px 30px;
    }

    .tile-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 12px;
    }

    .tile {
        padding: 15px;
    }

    .tile-icon {
        font-size: 36px;
        min-height: 36px;
    }

    .tile-title {
        font-size: 12px;
    }

    .tile-subtitle {
        font-size: 11px;
    }
}