body {
    margin: 0;
    font-family: 'Segoe UI', 'Meiryo', sans-serif;
    background: #000000;
    color: #fff;
    background-image: url('../img/VRChat_2025-08-11_07-58-52.480_3840x2160.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 100vh;
    backdrop-filter: blur(2px) brightness(0.7);
}

.left_title {
    position: absolute;
    top: 120px;
    left: 0;
    max-width: 100vw;
    padding: 28px 20px 16px 0px;
    margin-left: 100px;
    text-align: left;
    z-index: 10;
}

.left_title h1 {
    font-size: 6rem;
    color: #fff;
    margin: 0 0 18px 0;
    font-weight: 800;
    text-shadow: 1px 2px 12px #0006;
    line-height: 1.1;
}

.left_title p {
    font-size: 1.25rem;
    color: #e0e6ff;
    margin: 0;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-align: right;
}

.right_title {
    position: absolute;
    top: 10vw;
    right: 10vw;
    text-align: center;
}

.right_title h1{
    letter-spacing: 15px;
    font-style: italic;
}

@media (max-width: 1200px) {
    .left_title {
        margin-left: 60px;
    }
    .left_title h1 {
        font-size: 4.5rem;
    }
    .left_title p {
        font-size: 1.1rem;
    }
    .right_title h1 {
        letter-spacing: 10px;
    }
}

@media (max-width: 900px) {
    .left_title {
        position: static;
        width: 90vw;
        max-width: 90vw;
        border-radius: 0 0 18px 18px;
        margin: 16px auto 0 auto;
        padding: 24px 5vw 18px 5vw;
        box-shadow: 0 4px 24px #0006;
        text-align: left;
    }
    .left_title h1 {
        font-size: 2.5rem;
    }
    .left_title p {
        font-size: 1rem;
    }
    .right_title {
        position: static;
        margin: 20px auto;
    }
    .right_title h1 {
        font-size: 1.8rem;
        letter-spacing: 8px;
    }
    .left_button {
        text-align: center;
    }
    .about-button {
        width: 80%;
        min-width: 200px;
        font-size: 1rem;
        padding: 10px 0;
    }
}

@media (max-width: 600px) {
    .left_title {
        width: 88vw;
        padding: 20px 6vw 16px 6vw;
    }
    .left_title h1 {
        font-size: 2rem;
    }
    .left_title p {
        font-size: 0.9rem;
    }
    .right_title h1 {
        font-size: 1.4rem;
        letter-spacing: 5px;
    }
    .about-button {
        width: 90%;
        min-width: 180px;
        font-size: 0.9rem;
    }
}

@media (max-width: 400px) {
    .left_title h1 {
        font-size: 1.6rem;
    }
    .left_title p {
        font-size: 0.8rem;
    }
    .right_title h1 {
        font-size: 1.2rem;
        letter-spacing: 3px;
    }
    .about-button {
        min-width: 150px;
        font-size: 0.85rem;
    }
}