*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    background: black;
}

body {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 20px 15px;
    text-align: center;
    font-family: "Zen Kaku Gothic New", sans-serif;
    color: white;
    overflow-wrap: break-word;
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

h1 {
    margin-bottom: 20px;
    font-size: clamp(24px, 6vw, 48px);
}

.description {
    font-weight: 400;
    font-size: clamp(0.9rem, 2.5vw, 1.2rem);
    margin-top: 15px;
}

.profile {
    margin-bottom: 20px;
}

.profile-img {
    width: clamp(100px, 20vw, 150px);
    height: clamp(100px, 20vw, 150px);
    border-radius: 50%;
    object-fit: cover;
}

.sns a {
    display: inline-block;
    margin: 10px 15px;
    text-decoration: none;
    border-radius: 4px;
    transition: box-shadow 0.2s ease-in-out;
}

.sns a:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.6);
}

.sns-icon-x {
    width: clamp(25px, 6vw, 30px);
    height: auto;
}

.sns-icon-note {
    width: clamp(50px, 10vw, 70px);
    height: auto;
}

.btn-rect {
    display: inline-block;
    padding: clamp(8px, 2vw, 12px) clamp(16px, 4vw, 24px);
    background: white;
    color: black;
    text-decoration: none;
    font-size: clamp(14px, 3vw, 16px);
    border-radius: 8px;
    transition: opacity 0.2s ease-in-out;
}

.btn-rect:hover {
    opacity: 0.8;
}

@media (max-width: 480px) {
    body {
        padding: 15px 10px;
    }

    .sns a {
        margin: 8px 10px;
    }
}

a {
  color: white;
}