* {
    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: #100509;
}

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

/* ============ 背景 ============ */
.desktop>.bg-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

/* ============ 内容层 ============ */
.overlay {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* ============ 顶部导航 ============ */
.top {
    position: relative;
    z-index: 20;
    flex-shrink: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2.2vh 3.5vw;
}

.logo {
    height: clamp(56px, 7vh, 88px);
    width: auto;
    object-fit: contain;
}

.contact {
    display: flex;
    align-items: center;
    gap: 1.2vw;
}

.nav-btn {
    height: clamp(38px, 5vh, 60px);
    width: auto;
    object-fit: contain;
    cursor: pointer;
    transition: transform 0.2s, opacity 0.2s;
}

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

/* ============ 主体：左 标题/QR / 右 特色卡片 + 这里愉悦 ============ */
.main {
    flex: 1;
    min-height: 0;
    display: flex;
    align-items: stretch;
    justify-content: space-between;
    gap: 3vw;
    padding: 2vh 4vw 3vh;
}

.left-col {
    flex: 0 1 auto;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 3.5vh;
    max-width: 44vw;
    padding-top: 3vh;
}

.title-img {
    width: clamp(440px, 38vw, 760px);
    height: auto;
    max-height: 46vh;
    object-fit: contain;
    margin-top: -3vw;
    filter: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.45));
}

/* ============ QR 区：qrPic banner + QR 横排 ============ */
.qr-wrap {
    position: relative;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1.4vw;
    margin-left: 5vw;
}

.qr-pic {
    width: clamp(280px, 24vw, 460px);
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 6px 18px rgba(230, 50, 90, 0.35));
}

#qrcode {
    flex-shrink: 0;
    width: clamp(120px, 10vw, 170px);
    height: clamp(120px, 10vw, 170px);
    padding: 8px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}

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

/* ============ 右列：特色卡片 + 这里愉悦 ============ */
.right-col {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: space-between;
    gap: 3vh;
    padding-top: 1vh;
    padding-bottom: 2vh;
}

.card-img {
    width: clamp(240px, 19vw, 360px);
    height: auto;
    max-height: 52vh;
    object-fit: contain;
    filter: drop-shadow(0 8px 22px rgba(0, 0, 0, 0.4));
    margin-right: 5vw;
    margin-top: 5vw;
}

.text-img {
    width: clamp(320px, 26vw, 520px);
    height: auto;
    max-height: 10vh;
    object-fit: contain;
    filter: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.55));
    margin-top: auto;
}

/* ============ 响应式 ============ */
@media (max-height: 820px) {
    .main {
        gap: 2vw;
        padding-top: 1vh;
    }

    .left-col {
        gap: 2.4vh;
        padding-top: 1vh;
    }

    .title-img {
        width: clamp(500px, 44vw, 820px);
        max-height: 54vh;
    }

    .card-img {
        max-height: 46vh;
    }

    .qr-pic {
        width: clamp(240px, 22vw, 380px);
    }

    #qrcode {
        width: clamp(100px, 8.5vw, 140px);
        height: clamp(100px, 8.5vw, 140px);
    }
}

@media (max-width: 1280px) {
    .title-img {
        width: clamp(340px, 34vw, 520px);
    }

    .qr-pic {
        width: clamp(260px, 28vw, 420px);
    }

    .card-img {
        width: clamp(200px, 22vw, 320px);
    }
}