* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .sponsors-section {
            padding: 70px 0;
            font-family: 'Work Sans', sans-serif;
            background: #f3f6fb;
        }

        .sponsors-section .section-title {
            font-size: 38px;
            font-weight: 700;
            color: #0A0059;
            text-align: center;
            margin-bottom: 48px;
            letter-spacing: -0.3px;
        }
        .sponsors-section  .features-heading-2025-title{
                padding: 20px 0 50px;
        }
        /* Tab 包装 + 箭头 */
        .sponsors-tabs-wrapper {
            position: relative;
            max-width: 900px;
            margin: 0 auto 35px;
            padding: 0 70px;
        }

        .sponsors-tabs {
            display: flex;
            justify-content: center;
            gap: 48px;
            border-bottom: 2px solid rgba(10, 0, 89, 0.1);
            flex-wrap: wrap;
        }

        .sponsor-tab-btn {
            background: transparent;
            border: none;
            font-size: 22px;
            font-weight: 500;
            color: #0A0059;
            padding: 12px 0 14px 0;
            cursor: pointer;
            position: relative;
            white-space: nowrap;
            transition: color 0.2s ease;
            font-family: 'Work Sans', sans-serif;
        }

        .sponsor-tab-btn:hover {
            color: #3b2b9e;
        }

        .sponsor-tab-btn::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, #67B6FF, #a37de8, #f075d9);
            transform: scaleX(0);
            transition: transform 0.3s cubic-bezier(0.2, 0.9, 0.4, 1.1);
            border-radius: 3px;
        }

        .sponsor-tab-btn.active {
            font-weight: 700;
            color: #0A0059;
        }

        .sponsor-tab-btn.active::after {
            transform: scaleX(1);
        }

        /* 左右箭头 */
        .sponsor-tab-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: #ffffff;
            border: 1px solid #e2e8f0;
            font-size: 28px;
            font-weight: 400;
            color: #0A0059;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.25s ease;
            z-index: 2;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
            line-height: 1;
        }

        .sponsor-tab-arrow:hover {
            background: #ffffff;
            border-color: #b9c8f0;
            box-shadow: 0 6px 14px rgba(0, 0, 0, 0.05);
            transform: translateY(-50%) scale(1.02);
        }

        .sponsor-tab-prev {
            left: 10px;
        }

        .sponsor-tab-next {
            right: 10px;
        }

        /* 轮播容器 */
        .sponsors-carousel-container {
            max-width: 1100px;
            margin: 0 auto;
            overflow: hidden;
            width: 100%;
            border-radius: 16px;
        }

        .sponsors-carousel {
            display: flex;
            transition: transform 0.45s cubic-bezier(0.2, 0.85, 0.4, 1);
            width: 100%;
        }

        .sponsor-slide {
            min-width: 100%;
            padding: 0 12px;
            box-sizing: border-box;
        }

        /* 网格布局 —— 桌面默认一行三列 */
        .sponsor-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
             grid-template-rows: repeat(2, 1fr);
            gap: 28px;
            margin: 0;
            padding: 8px 0 12px;
        }

        /* 卡片样式 */
        .sponsor-card {
            background: #ffffff;
            border-radius: 1px;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 130px;
            width: 100%;
            box-sizing: border-box;
            padding: 0;
            transition: all 0.25s ease;
        }

        .sponsor-card:hover {
            transform: translateY(-1px);
        }

        .sponsor-card img {
            width: 100%;
            height: auto;
            object-fit: contain;
            display: block;
        }

        /* 圆点指示器 */
        .sponsor-dots {
            /* display: flex; */
            display: none;
            justify-content: center;
            gap: 12px;
            margin-top: 32px;
        }

        .sponsor-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #67B6FF;
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .sponsor-dot.active {
            background: #67B6FF;
            transform: scale(1.4);
        }

        .tab-carousel {
            display: none;
        }

        .tab-carousel.active {
            display: flex;
            width: 100%;
        }

        /* ========= 移动端布局: 两列，每页最多4个卡片 ========= */
        @media (max-width: 768px) {
            .sponsors-section {
                padding: 50px 0;
            }
            .sponsors-section .section-title {
                font-size: 30px;
                margin-bottom: 32px;
            }
             .sponsors-section  .features-heading-2025-title{
                    padding: 0px 0 25px;
        }
            .sponsors-tabs-wrapper {
                padding: 0 40px;
                margin-bottom: 25px;
            }
            .sponsors-tabs {
                gap: 20px;
            }
            .sponsor-tab-btn {
                font-size: 16px;
                padding: 10px 0 12px 0;
                white-space: nowrap;
            }
            .sponsor-tab-arrow {
                width: 38px;
                height: 38px;
                font-size: 26px;
            }
            /* 移动端: 强制每页2列 */
            .sponsor-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .sponsor-card {
                min-height: 110px;
                padding: 16px 12px;
            }
            .sponsor-card img {
                /* max-height: 70px; */
                /* max-width: 85%; */
            }
            .sponsor-dots {
                margin-top: 22px;
            }
            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 480px) {
            .sponsor-card {
                min-height: 85px;
                padding: 0;
            }
            .sponsor-card img {
                /* max-height: 60px; */
            }
            .sponsor-grid {
                gap: 14px;
            }
            .sponsors-tabs-wrapper {
                padding: 0 30px;
            }
            .sponsor-tab-arrow {
                width: 34px;
                height: 34px;
                font-size: 22px;
            }
        }

        @media (min-width: 1400px) {
            .sponsors-carousel-container {
                max-width: 1200px;
            }
            .sponsor-card {
                min-height: 145px;
            }
            .sponsor-card img {
                /* max-height: 100px; */
            }
        }