* {
    padding: 0;
    margin: 0;
    -webkit-user-drag: none;
    user-select: none;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #07070e;
}

.desktop {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

/* 背景人物图：铺满、居中裁剪 */
.fixed-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 32%;
    z-index: 0;
}

/* 顶/底压暗，保证四角文字与按钮可读 */
.desktop::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background: linear-gradient(180deg,
        rgba(7, 7, 14, 0.55) 0%,
        rgba(7, 7, 14, 0) 18%,
        rgba(7, 7, 14, 0) 52%,
        rgba(7, 7, 14, 0.85) 100%);
}

/* ============ 星光装饰 ============ */
.xiushi {
    position: absolute;
    height: auto;
    object-fit: contain;
    z-index: 1;
    pointer-events: none;
    mix-blend-mode: screen;
}

.left-xiushi {
    left: 0;
    top: 20%;
    width: 18vw;
    max-width: 360px;
}

.right-xiushi {
    right: 0;
    top: 40%;
    width: 20vw;
    max-width: 460px;
}

/* ============ 内容层 ============ */
.content {
    position: absolute;
    inset: 0;
    z-index: 2;
}

/* ============ 顶部导航 ============ */
.top {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2.4vh 2.6vw;
}

.logo {
    width: 12vw;
    height: auto;
    object-fit: contain;
}

.contact {
    display: flex;
    align-items: center;
    gap: 1vw;
}

.nav-btn {
    height: clamp(40px, 5vh, 60px);
    width: auto;
    object-fit: contain;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.2s;
}

.nav-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* ============ 左侧主标题 ============ */
.title-block {
    position: absolute;
    left: 4vw;
    top: 17%;
    width: 34vw;
    max-width: 580px;
}

.title-img {
    width: 100%;
    height: auto;
    object-fit: contain;
}

/* ============ 右侧扫码下载 ============ */
.qr-block {
    position: absolute;
    right: 3.5vw;
    top: 16%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2vh;
}

.qrcode-box {
    width: clamp(110px, 9vw, 156px);
    height: clamp(110px, 9vw, 156px);
    background: #fff;
    padding: clamp(7px, 0.6vw, 11px);
    border: 2px solid #b15cff;
    border-radius: clamp(10px, 0.9vw, 16px);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 26px rgba(177, 92, 255, 0.55);
}

#qrcode img,
#qrcode canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

.saoma {
    width: clamp(120px, 10vw, 168px);
    height: auto;
    object-fit: contain;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.2s;
}

.saoma:hover {
    opacity: 0.92;
    transform: translateY(-1px);
}

.qr-tip {
    color: #e7d7ff;
    font-size: clamp(11px, 0.85vw, 15px);
    white-space: nowrap;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}

/* ============ 中下方：画廊 + 特性条 ============ */
.bottom-stack {
    position: absolute;
    left: 50%;
    bottom: 1vh;
    transform: translateX(-50%);
    width: 70vw;
    max-width: 1280px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2vw;
}

.gallery {
    width: 92%;
}

.slides {
    position: relative;
    width: 100%;
}

.slide {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.6s ease;
}

.slide.s2 {
    position: absolute;
    inset: 0;
}

.slide.active {
    opacity: 1;
}

/* ============ 箭头装饰 ============ */
.jiantou {
    position: absolute;
    right: 5.5vw;
    bottom: 16vh;
    width: clamp(48px, 4.5vw, 86px);
    height: auto;
    object-fit: contain;
    pointer-events: none;
}

/* ============ 底部特性条 ============ */
.feature-wrap {
    width: 100%;
}

.feature-card {
    width: 100%;
    height: auto;
    object-fit: contain;
}

/* ============ 响应式 ============ */
@media (max-width: 1366px) {
    .title-block {
        width: 38vw;
    }
}

@media (max-height: 760px) {
    .bottom-stack {
        width: 64vw;
    }

    .jiantou {
        bottom: 17vh;
    }

    .qr-block {
        top: 14%;
    }

    .title-block {
        top: 15%;
    }
}

@media (max-height: 640px) {
    .bottom-stack {
        width: 58vw;
    }

    .title-block {
        width: 32vw;
        top: 13%;
    }

    .qrcode-box {
        width: clamp(96px, 11vh, 128px);
        height: clamp(96px, 11vh, 128px);
    }
}