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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: url('background.png') center center;
    background-size: cover;
    background-attachment: fixed;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: -1;
}

.container {
    max-width: 480px;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 40px 30px;
    text-align: center;
}

.profile {
    margin-bottom: 40px;
}

.profile-image {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(238, 90, 36, 0.3);
}

.logo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.profile h1 {
    font-size: 28px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 10px;
}

.description {
    color: #7f8c8d;
    font-size: 16px;
    line-height: 1.5;
}

.links {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 30px;
}

.section-title {
    font-size: 20px;
    font-weight: 700;
    color: #2c3e50;
    text-align: left;
    margin-top: 20px;
    margin-bottom: 10px;
    padding-left: 5px;
    border-left: 4px solid #ee5a24;
    padding-left: 12px;
}

.section-title:first-child {
    margin-top: 0;
}

.link-item {
    display: flex;
    align-items: center;
    padding: 18px 20px;
    background: white;
    border-radius: 15px;
    text-decoration: none;
    color: #2c3e50;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border: 2px solid transparent;
}

.link-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: #3498db;
}

.link-item.twitter:hover {
    border-color: #1da1f2;
}

.link-item.marketplace:hover {
    border-color: #e056fd;
}

.link-item.landing:hover {
    border-color: #27ae60;
}

.link-item.shop:hover {
    border-color: #f39c12;
}

.link-item.mint:hover {
    border-color: #9b59b6;
}

.link-icon {
    font-size: 24px;
    margin-right: 15px;
    width: 30px;
    text-align: center;
}

.link-text {
    flex: 1;
    text-align: left;
    font-weight: 600;
    font-size: 16px;
}

.link-arrow {
    font-size: 18px;
    color: #95a5a6;
    transition: transform 0.3s ease;
}

.link-item:hover .link-arrow {
    transform: translateX(3px);
    color: #3498db;
}

.footer {
    border-top: 1px solid #ecf0f1;
    padding-top: 20px;
    margin-top: 20px;
}

.footer p {
    color: #95a5a6;
    font-size: 14px;
}

/* タブレット対応 */
@media (max-width: 768px) {
    body {
        padding: 15px;
        background-attachment: scroll;
    }
    
    .container {
        padding: 35px 25px;
        max-width: 600px;
    }
    
    .profile h1 {
        font-size: 26px;
    }
    
    .link-item {
        padding: 20px;
    }
    
    .link-text {
        font-size: 16px;
    }
}

/* スマートフォン（縦向き）対応 */
@media (max-width: 480px) {
    body {
        padding: 10px;
        background-attachment: scroll;
    }

    .container {
        padding: 25px 20px;
        margin: 5px;
        border-radius: 15px;
        max-width: 100%;
    }

    .profile {
        margin-bottom: 30px;
    }

    .profile-image {
        width: 100px;
        height: 100px;
        margin-bottom: 15px;
    }

    .profile h1 {
        font-size: 22px;
        margin-bottom: 8px;
    }

    .section-title {
        font-size: 18px;
        margin-top: 18px;
        margin-bottom: 8px;
    }

    .links {
        gap: 12px;
        margin-bottom: 25px;
    }
    
    .link-item {
        padding: 16px 18px;
        border-radius: 12px;
    }
    
    .link-icon {
        font-size: 22px;
        margin-right: 12px;
        width: 28px;
    }
    
    .link-text {
        font-size: 15px;
    }
    
    .link-arrow {
        font-size: 16px;
    }
    
    .footer {
        padding-top: 15px;
        margin-top: 15px;
    }
}

/* 小型スマートフォン対応 */
@media (max-width: 360px) {
    .container {
        padding: 20px 15px;
    }

    .profile-image {
        width: 90px;
        height: 90px;
    }

    .profile h1 {
        font-size: 20px;
    }

    .section-title {
        font-size: 17px;
        margin-top: 16px;
        margin-bottom: 8px;
    }
    
    .link-item {
        padding: 14px 16px;
    }
    
    .link-icon {
        font-size: 20px;
        margin-right: 10px;
        width: 25px;
    }
    
    .link-text {
        font-size: 14px;
    }
    
    .link-arrow {
        font-size: 15px;
    }
}

/* 極小スマートフォン対応 */
@media (max-width: 320px) {
    body {
        padding: 8px;
    }

    .container {
        padding: 18px 12px;
    }

    .profile-image {
        width: 80px;
        height: 80px;
    }

    .profile h1 {
        font-size: 18px;
    }

    .section-title {
        font-size: 16px;
        margin-top: 14px;
        margin-bottom: 6px;
    }
    
    .link-item {
        padding: 12px 14px;
    }
    
    .link-icon {
        font-size: 18px;
        margin-right: 8px;
        width: 22px;
    }
    
    .link-text {
        font-size: 13px;
    }
}