.banner-container {
    position: relative;
    width: 100%;
    height: 400px;
    overflow: hidden;
    border-radius: 12px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
}
.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1.2s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-align: center;
}
.banner-slide.active {
    opacity: 1;
}

/* ========== 6张轮播图专属纯渐变背景 ========== */
/* 第1张：中亚二手新能源车（科技蓝） */
.banner-slide:nth-child(1) {
    background: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(147, 197, 253, 0.2) 0%, transparent 50%),
        linear-gradient(135deg, #0b3d70 0%, #1e40af 50%, #3b82f6 100%);
}
/* 第2张：中国工厂出海首选（财富金） */
.banner-slide:nth-child(2) {
    background: 
        radial-gradient(circle at 30% 70%, rgba(251, 191, 36, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(252, 211, 77, 0.2) 0%, transparent 50%),
        linear-gradient(135deg, #d4af37 0%, #f59e0b 50%, #fbbf24 100%);
}
/* 第3张：全球政府招标（权威蓝） */
.banner-slide:nth-child(3) {
    background: 
        radial-gradient(circle at 10% 90%, rgba(71, 85, 105, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 90% 10%, rgba(148, 163, 184, 0.2) 0%, transparent 50%),
        linear-gradient(135deg, #1e3a8a 0%, #334155 50%, #475569 100%);
}
/* 第4张：光伏储能（环保绿） */
.banner-slide:nth-child(4) {
    background: 
        radial-gradient(circle at 25% 75%, rgba(34, 197, 94, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 75% 25%, rgba(134, 239, 172, 0.2) 0%, transparent 50%),
        linear-gradient(135deg, #065f46 0%, #059669 50%, #10b981 100%);
}
/* 第5张：消防无人机（应急橙） */
.banner-slide:nth-child(5) {
    background: 
        radial-gradient(circle at 15% 85%, rgba(239, 68, 68, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 85% 15%, rgba(252, 165, 165, 0.2) 0%, transparent 50%),
        linear-gradient(135deg, #1e293b 0%, #dc2626 70%, #f87171 100%);
}
/* 第6张：摩托车出口（活力橙） */
.banner-slide:nth-child(6) {
    background: 
        radial-gradient(circle at 40% 60%, rgba(249, 115, 22, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 60% 40%, rgba(253, 186, 116, 0.2) 0%, transparent 50%),
        linear-gradient(135deg, #c2410c 0%, #ea580c 50%, #f97316 100%);
}

.banner-content {
    max-width: 800px;
    padding: 0 20px;
    z-index: 10;
}
.banner-content h1 {
    font-size: 48px;
    margin-bottom: 15px;
    text-shadow: 0 3px 15px rgba(0,0,0,0.6);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: 0.5px;
}
.banner-content p {
    font-size: 22px;
    margin-bottom: 8px;
    opacity: 0.98;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}
.banner-hook {
    font-size: 20px;
    color: #ffd700;
    margin-bottom: 30px;
    font-weight: 600;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
    letter-spacing: 0.3px;
}
.banner-btn {
    padding: 16px 40px;
    background: #fff;
    color: #d4af37;
    border: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    letter-spacing: 0.5px;
}
.banner-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    background: #ffd700;
    color: #fff;
}
.banner-dots {
    position: absolute;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 20;
}
.banner-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}
.banner-dot.active {
    background: #fff;
    transform: scale(1.3);
}
.banner-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    background: rgba(255,255,255,0.25);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 26px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    backdrop-filter: blur(4px);
    z-index: 20;
}
.banner-arrow:hover {
    background: rgba(255,255,255,0.4);
    transform: translateY(-50%) scale(1.1);
}
.banner-arrow.prev { left: 25px; }
.banner-arrow.next { right: 25px; }

/* 阿语自动右对齐 */
.ar-direction .banner-content {
    text-align: right;
}

/* 响应式适配 */
@media (max-width: 1200px) { 
    .banner-container { height: 350px !important; } 
    .banner-content h1 { font-size: 40px !important; } 
    .banner-content p { font-size: 20px !important; }
    .banner-hook { font-size: 18px !important; }
}
@media (max-width: 768px) {  
    .banner-container { height: 250px !important; border-radius: 8px !important; } 
    .banner-content h1 { font-size: 28px !important; } 
    .banner-content p { font-size: 16px !important; } 
    .banner-hook { font-size: 14px !important; margin-bottom: 20px !important; }
    .banner-btn { padding: 12px 28px !important; font-size: 16px !important; } 
    .banner-arrow { width: 44px !important; height: 44px !important; font-size: 20px !important; left: 15px !important; right: 15px !important; } 
}
@media (max-width: 480px) { 
    .banner-content h1 { font-size: 24px !important; } 
    .banner-content p { font-size: 14px !important; }
    .banner-hook { font-size: 13px !important; }
    .banner-btn { padding: 10px 24px !important; font-size: 14px !important; }
}