body {
    margin: 0;
    font-family: Arial, sans-serif;

    /* 👇 ใส่พื้นหลังตรงนี้ */
    background: url("../images/background.jpg") no-repeat center center fixed;
    background-size: cover;

    height: 100vh;
}

/* โลโก้ */
.logo {
    position: absolute;
    top: 30px;
    right: 40px;
    font-size: 40px;
    font-weight: bold;
    color: #00a8ff;
}

/* เมนูซ้าย */
.menu-left {
    position: absolute;
    top: 50%;
    left: 30px;
    transform: translateY(-50%);
}

.menu-left .item {
    width: 70px;
    height: 70px;
    background: #00a8ff;
    border-radius: 50%;
    margin: 15px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 13px;
}

/* ภาพตรงกลาง */
.center {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.center img {
    max-height: 85vh;
}

/* ลิงก์ขวา */
.links {
    position: absolute;
    top: 50%;
    right: 40px;
    transform: translateY(-50%);
}

.link-box {
    background: #00a8ff;
    color: #fff;
    padding: 12px 18px;
    border-radius: 30px;
    margin-bottom: 15px;
    width: 260px;
    display: flex;
    justify-content: space-between;
}

.link-box span {
    background: #fff;
    color: #00a8ff;
    padding: 4px 12px;
    border-radius: 20px;
}

/* ด้านล่าง */
footer {
    position: absolute;
    bottom: 15px;
    width: 100%;
    text-align: center;
    color: #444;
}