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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', sans-serif;
    color: #2D2D2D;
    background-color: #FFFFFF;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    text-align: center;
    padding: 60px 20px 40px;
    background: linear-gradient(135deg, #189E9E 0%, #2CB2B2 100%);
    color: #FFFFFF;
}

.logo {
    width: 100px;
    height: 100px;
    border-radius: 22px;
    margin-bottom: 20px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.logo-placeholder {
    width: 100px;
    height: 100px;
    border-radius: 22px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #FFD93D 0%, #FF6B6B 25%, #4ECDC4 50%, #45B7D1 75%, #96C93D 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: bold;
    color: white;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

header h1 {
    font-size: 48px;
    font-weight: 700;
    letter-spacing: 4px;
    margin-bottom: 12px;
}

.tagline {
    font-size: 20px;
    font-weight: 400;
    opacity: 0.95;
}

/* Main Content */
main {
    padding: 60px 20px;
}

.description {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.description p {
    font-size: 18px;
    color: #7C7C7C;
    line-height: 1.8;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.feature {
    text-align: center;
    padding: 30px 20px;
    border-radius: 16px;
    background: #F9F9F9;
    transition: transform 0.2s ease;
}

.feature:hover {
    transform: translateY(-4px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 16px;
    background: #189E9E;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 30px;
    height: 30px;
    fill: #FFFFFF;
}

.feature h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #2D2D2D;
}

.feature p {
    font-size: 14px;
    color: #7C7C7C;
}

/* Download Section */
.download {
    text-align: center;
    padding: 40px;
    background: #F9F9F9;
    border-radius: 20px;
}

.download h2 {
    font-size: 24px;
    margin-bottom: 16px;
    color: #2D2D2D;
}

.coming-soon {
    display: inline-block;
    padding: 12px 32px;
    background: #ADADAD;
    color: #FFFFFF;
    font-size: 16px;
    font-weight: 600;
    border-radius: 30px;
    margin-bottom: 24px;
}

.store-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.store-button {
    display: flex;
    align-items: center;
    padding: 12px 24px;
    background: #DADADA;
    border-radius: 10px;
    text-decoration: none;
    color: #7C7C7C;
    transition: opacity 0.2s ease;
    cursor: not-allowed;
}

.store-button svg {
    width: 24px;
    height: 24px;
    margin-right: 10px;
    fill: #7C7C7C;
}

.store-button span {
    font-size: 14px;
    font-weight: 500;
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 20px;
    border-top: 1px solid #EEEEEE;
}

footer p {
    font-size: 14px;
    color: #ADADAD;
}

/* Responsive */
@media (max-width: 600px) {
    header {
        padding: 40px 20px 30px;
    }

    header h1 {
        font-size: 36px;
        letter-spacing: 2px;
    }

    .tagline {
        font-size: 16px;
    }

    main {
        padding: 40px 20px;
    }

    .description p {
        font-size: 16px;
    }

    .features {
        gap: 20px;
    }

    .feature {
        padding: 24px 16px;
    }

    .download {
        padding: 30px 20px;
    }

    .download h2 {
        font-size: 20px;
    }
}