:root {
    --bg-color: #E1F5FE;
    /* 明るい水色 */
    --primary-color: #0288D1;
    /* 落ち着いた青 */
    --accent-color-kiwi: #8BC34A;
    /* キウイ色 */
    --accent-color-cherry: #FF5252;
    /* さくらんぼ色 */
    --card-bg: #FFFFFF;
    --text-color: #37474F;
    --font-family: 'M PLUS Rounded 1c', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    background-image: radial-gradient(circle at 2px 2px, rgba(255, 255, 255, 0.5) 1px, transparent 0);
    background-size: 40px 40px;
    font-family: var(--font-family);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    width: 90%;
    max-width: 500px;
    padding: 40px 20px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
    text-align: center;
    border: 4px solid #FFFFFF;
}

header {
    margin-bottom: 40px;
}

.emoji-float {
    font-size: 2.5rem;
    margin-bottom: 10px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

h1 {
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: 5px;
    letter-spacing: -0.5px;
}

.subtitle {
    font-size: 0.9rem;
    color: #78909C;
    font-weight: 700;
}

.links-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.link-card {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px;
    background: var(--card-bg);
    color: var(--text-color);
    text-decoration: none;
    border-radius: 25px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 3px solid transparent;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.link-card:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.link-card.mi-muse {
    border-color: #E1BEE7;
}

.link-card.mi-muse:hover {
    background-color: #F3E5F5;
}

.link-card.instagram {
    border-color: #FFCDD2;
}

.link-card.instagram:hover {
    background-color: #FFEBEE;
}

.link-card.x-twitter {
    border-color: #B3E5FC;
}

.link-card.x-twitter:hover {
    background-color: #E1F5FE;
}

.emoji {
    margin-right: 12px;
    font-size: 1.3rem;
}

footer {
    margin-top: 40px;
    font-size: 0.8rem;
    color: #90A4AE;
}