html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}
body {
    width: 100vw;
    height: 100vh;
    min-height: 100vh;
    background: url('../assets/images/background.jpg') center center/cover no-repeat;
    position: relative;
    overflow: hidden;
}
.first-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    width: 100vw; height: 100vh;
    background: rgba(255,255,255,0.01);
    z-index: 1;
}
.first-content {
    position: absolute;
    top: 18%;
    left: 7%;
    z-index: 2;
}
.first-title {
    font-size: 4vw;
    color: #e97c7c;
    font-weight: bold;
    letter-spacing: 2px;
    margin-bottom: 40px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.first-btn {
    font-size: 2vw;
    padding: 18px 48px;
    background: rgba(255,255,255,0.85);
    color: #e97c7c;
    border: none;
    border-radius: 32px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.first-btn:hover {
    background: #e97c7c;
    color: #fff;
}
@media (max-width: 700px) {
    .first-title { font-size: 7vw; }
    .first-btn { font-size: 4vw; padding: 12px 24px; }
    .first-content { left: 5%; top: 10%; }
}
.main-logo-right {
    position: fixed;
    top: 50%;
    right: 90px;
    transform: translateY(-50%);
    width: 560px;
    height: auto;
    z-index: 100;
    background-color: rgba(255,255,255,0.3);
    border-radius: 50%;
    box-sizing: border-box;
    padding: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
}