:root {
            --primary-color: #FCD535; /* 币安金 */
            --bg-color: #121213;
            --card-bg: #1E2329;
            --text-color: #EAECEF;
            --sub-text: #848E9C;
            --success: #02C076;
        }
        
        * { box-sizing: border-box; }
        body { font-family: "PingFang SC", "Microsoft YaHei", sans-serif; background-color: var(--bg-color); color: var(--text-color); margin: 0; line-height: 1.6; }
        .container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
        
        /* Header & Nav */
        header { background: #181A20; padding: 15px 0; position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid #2B2F36; }
        .nav-flex { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 24px; font-weight: bold; color: var(--primary-color); text-decoration: none; }
        nav a { color: var(--text-color); margin-left: 20px; text-decoration: none; font-size: 14px; transition: color 0.3s; }
        nav a:hover { color: var(--primary-color); }

        /* Status Bar */
        .status-bar { background: #2B2F36; padding: 10px; text-align: center; border-bottom: 2px solid var(--primary-color); font-size: 14px; }

        /* Sections */
        .section { padding: 60px 0; border-bottom: 1px solid #2B2F36; }
        h1, h2 { color: var(--primary-color); }
        h1 { font-size: 2.2rem; margin-bottom: 20px; }
        h2 { font-size: 1.8rem; margin-bottom: 25px; }

        .intro-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 40px; align-items: center; }
        .screenshot { background: #2B2F36; border-radius: 8px; width: 100%; min-height: 200px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
        .screenshot img { width: 100%; height: auto; display: block; }

        /* App Info & Features */
        .app-info-card { background: var(--card-bg); border-radius: 12px; padding: 30px; }
        .feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin-top: 20px; }
        .feature-item { background: #2B2F36; padding: 20px; border-radius: 8px; border-left: 4px solid var(--primary-color); }

        /* Download Area */
        .download-btns { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin: 30px 0; }
        .btn { background: var(--primary-color); color: #000; text-align: center; padding: 18px; border-radius: 8px; font-weight: bold; text-decoration: none; transition: 0.3s; }
        .btn:hover { background: #f0c000; transform: translateY(-2px); }
        .btn.outline { background: transparent; border: 1px solid var(--primary-color); color: var(--primary-color); }

        /* FAQ */
        .faq-item { margin-bottom: 15px; background: var(--card-bg); padding: 20px; border-radius: 8px; }
        .faq-item h3 { margin: 0 0 10px 0; font-size: 18px; color: var(--primary-color); }

        /* Security Warning */
        .warning-box { border: 1px dashed var(--primary-color); padding: 25px; border-radius: 12px; margin: 30px 0; background: rgba(252, 213, 53, 0.05); }

        /* Footer */
        footer { padding: 50px 0; background: #181A20; text-align: center; color: var(--sub-text); border-top: 1px solid #2B2F36; }
        .tag-cloud { font-size: 12px; margin-bottom: 20px; color: #474D57; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }

        @media (max-width: 768px) {
            .intro-grid { grid-template-columns: 1fr; }
            nav { display: none; }
            h1 { font-size: 1.6rem; }
        }
		/* App 截图容器样式 */
.app-screenshot-wrapper {
    margin: 30px 0;
    display: flex;
    gap: 15px;
    overflow-x: auto; /* 手机端支持横向滑动 */
    padding-bottom: 15px;
}

.app-screenshot-wrapper::-webkit-scrollbar {
    height: 6px;
}
.app-screenshot-wrapper::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

.screenshot-card {
    flex: 0 0 calc(25% - 12px); /* PC端一行4张 */
    min-width: 200px; /* 保证手机端不缩在一起 */
    background: #2B2F36;
    border-radius: 12px;
    border: 1px solid #36393F;
    overflow: hidden;
    transition: transform 0.3s;
}

.screenshot-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.screenshot-card img {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 9 / 16; /* 保持手机App截图比例 */
    object-fit: cover;
}

.screenshot-caption {
    padding: 10px;
    text-align: center;
    font-size: 13px;
    color: var(--sub-text);
    background: #1E2329;
}

@media (max-width: 768px) {
    .screenshot-card {
        flex: 0 0 65%; /* 手机端每张图占屏幕65%，露出下一张的一角引导滑动 */
    }
}
/* 图片放大效果 */
.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.9);
    justify-content: center;
    align-items: center;
    cursor: zoom-out;
}
.lightbox img { max-width: 90%; max-height: 80%; border: 2px solid var(--primary-color); }

/* 底部悬浮导航 */
.fixed-bottom-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: #1E2329;
    border-top: 2px solid var(--primary-color);
    padding: 10px 0;
    z-index: 1500;
    box-shadow: 0 -5px 15px rgba(0,0,0,0.5);
}
.bottom-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}
.bottom-info { display: flex; align-items: center; gap: 15px; }
.bottom-logo { width: 32px; height: 32px; background: var(--primary-color); border-radius: 4px; }
.bottom-logo img{width:100%;}
.bottom-text h4 { margin: 0; font-size: 16px; color: var(--primary-color); }
.bottom-text p { margin: 0; font-size: 12px; color: var(--sub-text); }

.bottom-btns { display: flex; gap: 10px; }
.btn-sm { 
    padding: 8px 15px; 
    border-radius: 4px; 
    font-size: 14px; 
    font-weight: bold; 
    text-decoration: none; 
    transition: 0.3s;
}
.btn-download { background: var(--primary-color); color: #000; }
.btn-reg { background: transparent; border: 1px solid var(--primary-color); color: var(--primary-color); }

/* 移动端适配：底部栏 */
@media (max-width: 768px) {
    .bottom-text { display: none; } /* 手机端隐藏口号，留出按钮空间 */
    .bottom-flex { justify-content: space-around; }
}

 /* 软件档案区 - SEO核心 */
        .app-profile { background: var(--card-bg); padding: 25px; border-radius: 12px; display: flex; gap: 25px; margin-top: 20px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
        .app-icon { width: 100px; height: 100px; background: #181A20; border-radius: 20px; display: flex; align-items: center; justify-content: center; }
		.app-icon img{width:100%; border-radius:20px;}
        .app-info h1 { font-size: 24px; margin-bottom: 10px; }
        .app-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; font-size: 14px; color: #707A8A; }
        .app-meta span b { color: #FFF; }

        /* 下载渠道块 */
        .download-channels { background: #fff; margin-top: 20px; padding: 25px; border-radius: 12px; }
        .channel-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 15px; margin-top: 20px; }
        .dl-card { border: 1px solid #EAECEF; padding: 15px; border-radius: 8px; text-align: center; transition: 0.3s; }
        .dl-card:hover { border-color: var(--main-gold); background: #FFFDF5; }
        .dl-card h4 { margin-bottom: 10px; font-size: 16px; }
        .dl-btn { display: inline-block; background: var(--main-gold); color: #000; padding: 8px 20px; border-radius: 5px; font-weight: bold; font-size: 14px; }

        /* 截图区域 - 百度图片SEO */
        .screenshot-wrapper { background: #fff; margin-top: 20px; padding: 25px; border-radius: 12px; }
        .screenshot-scroll { display: flex; gap: 15px; overflow-x: auto; padding-bottom: 10px; }
        .screen-img { flex: 0 0 200px; height: 350px; background: #eee; border-radius: 8px; position: relative; overflow: hidden; border: 1px solid #ddd; }
        .screen-img img { width: 100%; height: 100%; object-fit: cover; }
        .screen-img::after { content: "Binance App截图"; position: absolute; bottom: 10px; width: 100%; text-align: center; font-size: 12px; color: #999; }
		@media (max-width: 600px) {
            .app-profile { flex-direction: column; align-items: center; text-align: center; }
            .app-meta { grid-template-columns: 1fr; }
        }