*{                              /*所有外边距清零*/
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.color-red{
    color: #ae1f19;             /*网站标准红色-文字*/
}

.color-hui {
    background-color: #7d7d7d;  /*网站标准灰色-背景*/
}

.B-red{
    background-color: #ae1f19;  /*网站标准红色-背景*/
}

.top-bar{                       /*顶部栏*/
    width: 100%;                /*宽度*/
    height: 90px;              /*高度*/
    position: fixed;            /*固定定位，脱离文档流 */
    top: 0;                     /*贴紧顶部*/
    z-index: 999;               /*确保在其他内容上方*/
    display: flex;
    align-items: center;
    padding: 0 20px;
    box-shadow: 0 4px 10px #ae1f19;      /*阴影*/
}

.div-inline {
    display: inline;            /*使div浮动*/
}

.ding-1 {                       /*顶部栏内容块*/
    width: 90%;
    height: 100%;
    margin: 0 auto;             /*自身左右居中*/
    display: flex;              /*使内容居中生效*/
    align-items: center;        /*内容上下居中*/
}

.ding-2 {                       /*包含logo和名字的块*/
    width: 320px;
    height: 60px;
    left: 0;                    /*左对齐*/
    display: flex;              /*使内容居中生效*/
    align-items: center;        /*内容上下居中*/
    cursor: pointer;           /* 鼠标变手型 */
}

.ding-21 {
    float: right;          /*右对齐*/
    padding: 0 20px;        /*左右内边距*/
    background-attachment: fixed;
}

.ding-3 {
    color: #ffffff;             /*字体白色*/
    font-weight: bold;          /*加粗*/
    font-size: 35px;
}

.ding-y {                       /*下载按钮和功能区域*/
    width: 40%;
    height: 100%;
    float: right;
    margin-left: auto;
}

.ding-y-1 {
    float: right;
}

.img {
    height: 100%;
    width: auto;
    left: 0;
}

.father {
  display: grid;
  width: 100%;
  height: 100%;
}

.box {
  grid-row: 1;
  grid-column: 1;
  width: 100%;
  height: 100%;
}

.bj-lb {                        /*首页图父级div*/
    width: 100%;
    height: 600px;
    overflow: hidden;
    position: relative;
}

.bj-img {                       /*首页轮播图*/
    width: 100%;
    height: 100%;
    filter: blur(5px);
    background: url('image/beijing-1.jpg') center/cover no-repeat;
    background-position: center 50%;
    will-change: background-position;
}

.fk-1 {
    width: 70%;
    height: 100%;
    margin: 0 auto;
    display: flex;              /*使内容居中生效*/
    align-items: center;        /*内容上下居中*/
}

.dibu {
    position: relative;
    bottom: 0;
    left: 0;
    width: 100%;
    text-align: center;
    padding: 12px 0;
    font-size: 14px;
}

    /* ===== 组件专用样式，不影响外部 ===== */
    .cube-widget {
        /* 组件容器：默认宽高可调整，或由外部控制 */
        --cube-size: 500px;
        --half-cube: 250px;
        --axis-tilt: -8deg;      /* 前后倾斜 */
        --side-tilt: 10deg;        /* 左右倾斜 */
        --perspective: 3200px;
        --text-color: rgba(255, 255, 255, 0.9);
        --text-shadow: 0 0 12px rgba(255, 255, 255, 0.8), 0 0 25px rgba(255, 255, 255, 0.5);

        display: inline-block;
        position: relative;
        width: var(--cube-size);
        height: var(--cube-size);
        background: transparent;
        cursor: grab;
        user-select: none;
        -webkit-user-select: none;
        -webkit-tap-highlight-color: transparent;
    }

    .cube-widget.dragging {
        cursor: grabbing;
    }

    .cube-widget__scene {
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        perspective: var(--perspective);
        -webkit-perspective: var(--perspective);
        perspective-origin: 50% 50%;
        -webkit-perspective-origin: 50% 50%;
    }

    .cube-widget__scale {
        width: 100%;
        height: 100%;
        position: relative;
        transform-style: preserve-3d;
        -webkit-transform-style: preserve-3d;
        will-change: transform;
    }

    .cube-widget__tilt {
        width: 100%;
        height: 100%;
        position: relative;
        transform-style: preserve-3d;
        -webkit-transform-style: preserve-3d;
        transform: rotateX(var(--axis-tilt)) rotateZ(var(--side-tilt));
        -webkit-transform: rotateX(var(--axis-tilt)) rotateZ(var(--side-tilt));
        will-change: transform;
    }

    .cube-widget__rotate {
        width: 100%;
        height: 100%;
        position: relative;
        transform-style: preserve-3d;
        -webkit-transform-style: preserve-3d;
        transform: rotateY(0deg);
        -webkit-transform: rotateY(0deg);
        will-change: transform;
    }

    .cube-widget__face {
        position: absolute;
        width: var(--cube-size);
        height: var(--cube-size);
        top: 0;
        left: 0;
        border-radius: 0;
        backface-visibility: visible;
        -webkit-backface-visibility: visible;
        transform-style: preserve-3d;
        -webkit-transform-style: preserve-3d;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 40px;
        font-weight: 700;
        letter-spacing: 2px;
        color: var(--text-color);
        text-shadow: var(--text-shadow);
        pointer-events: none; /* 文字不阻挡拖拽 */
    }

    .cube-widget__face--front {
        transform: translateZ(var(--half-cube));
        -webkit-transform: translateZ(var(--half-cube));
    }

    .cube-widget__face--back {
        transform: rotateY(180deg) translateZ(var(--half-cube));
        -webkit-transform: rotateY(180deg) translateZ(var(--half-cube));
    }

    .cube-widget__face--right {
        transform: rotateY(90deg) translateZ(var(--half-cube));
        -webkit-transform: rotateY(90deg) translateZ(var(--half-cube));
    }

    .cube-widget__face--left {
        transform: rotateY(-90deg) translateZ(var(--half-cube));
        -webkit-transform: rotateY(-90deg) translateZ(var(--half-cube));
    }

    .cube-widget__face--top {
        transform: rotateX(90deg) translateZ(var(--half-cube));
        -webkit-transform: rotateX(90deg) translateZ(var(--half-cube));
        background: transparent;
        border: none;
        box-shadow: none;
        pointer-events: none;
    }

    .cube-widget__face--bottom {
        transform: rotateX(-90deg) translateZ(var(--half-cube));
        -webkit-transform: rotateX(-90deg) translateZ(var(--half-cube));
        background: transparent;
        border: none;
        box-shadow: none;
        pointer-events: none;
    }