* {
    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: #062a23;
}

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

.desktop .fixed-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

/* ============ 顶部 ============ */
.top {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 5;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.6vh 3vw 0 3vw;
}

.logo {
    width: 15vw;
    object-fit: contain;
}

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

.nav-btn {
    height: clamp(42px, 5.4vh, 64px);
    width: auto;
    object-fit: contain;
    cursor: pointer;
    transition: transform 0.2s, opacity 0.2s;
}

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

/* ============ 右侧人物 ============ */
.desktop .renwu {
    position: absolute;
    right: 2vw;
    bottom: 0;
    height: 92vh;
    width: auto;
    max-width: 50vw;
    object-fit: contain;
    object-position: right bottom;
    z-index: 1;
}

/* ============ 左侧主体 ============ */
.hero {
    position: absolute;
    left: 4vw;
    top: 18vh;
    z-index: 2;
    width: 56vw;
    max-width: 1100px;
    display: flex;
    flex-direction: column;
    gap: 4vh;
}

.main-text {
    width: 100%;
    height: auto;
    max-height: 50vh;
    object-fit: contain;
    object-position: left center;
    display: block;
}

.download-row {
    display: flex;
    align-items: center;
    gap: 2vw;
}

.download-side {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 1.6vh;
    flex: 1;
    min-width: 0;
}

.download-area {
    position: relative;
    width: 60%;
    flex-shrink: 0;
}

.download-side .disclaimer {
    color: rgba(255, 255, 255, 0.65);
    font-size: 12px;
    line-height: 1.1;
    text-align: justify;
    max-width: clamp(320px, 26vw, 520px);
    user-select: text;
    margin-top: 0.3vh;
}

.download-img {
    display: block;
    width: 60%;
    height: auto;
}

.dl-hit {
    position: absolute;
    left: 0;
    width: 100%;
    height: 50%;
    cursor: pointer;
    display: block;
}

.dl-hit.btn_android {
    top: 0;
}

.dl-hit.btn_ios {
    top: 50%;
}

/* ============ 二维码 ============ */
.qrcode-box {
    flex-shrink: 0;
    width: clamp(150px, 11vw, 220px);
    aspect-ratio: 1 / 1;
    background: #fff;
    padding: 6px;
    border-radius: 12px;
    border: 2px solid rgba(127, 232, 192, 0.55);
    box-shadow: 0 0 14px rgba(127, 232, 192, 0.35), 0 4px 20px rgba(0, 0, 0, 0.4);
}

#qrcode {
    width: 100%;
    height: 100%;
}

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

/* ============ 响应式 ============ */
@media (max-width: 1280px) {
    .hero {
        left: 3vw;
        top: 16vh;
        width: 60vw;
    }

    .desktop .renwu {
        right: 1vw;
    }
}

@media (max-height: 760px) {
    .hero {
        top: 14vh;
        gap: 2.4vh;
    }

    .main-text {
        max-height: 42vh;
    }
}