/* ========== style.css 全面升级 保留原风格 ========== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        }

        body {
            background-color: #000000;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            position: relative;
        }

        /* 固定顶部横幅 (完全不变) */
        .top-banner {
            position: fixed;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 430px;
            height: 100px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            z-index: 1000;
            box-shadow: 0 2px 8px rgba(0,0,0,0.5);
            background-color: #1a1a2e;
        }

        /* 主容器：宽430px，自动边距，星空背景 */
        .container {
            width: 100%;
            max-width: 430px;
            margin: 100px auto 20px auto;
            background-size: cover;
            background-attachment: scroll;
            background-position: center;
            background-repeat: repeat-y;
            min-height: calc(100vh - 120px);
            box-shadow: 0 0 20px rgba(0,0,0,0.8);
            padding: 15px 15px 20px 15px;
            background-color: #0c0c1f;
        }

        /* 轮播区域改为固定广告图 */
        .carousel-section {
            width: 100%;
            margin-bottom: 20px;
            display: flex;
            justify-content: center;
        }

        .static-ad {
            width: 400px;
            height: 200px;
            border-radius: 20px;
            overflow: hidden;
            background-image: url('static/img/lb1.jpg');
            background-size: cover;
            background-position: center;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(0,0,0,0.7);
            transition: transform 0.2s;
        }

        .static-ad:active {
            transform: scale(0.98);
        }

        /* 广告横幅 (保持不变) */
        .ad-banners {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
            margin: 10px 0;
        }

        .ad-img {
            width: 400px;
            height: auto;
        }

        /* ===== 下载按钮区域 — 网格2列，比例7:3 ===== */
        .download-buttons {
            display: grid;
            grid-template-columns: 7fr 3fr;    /* 左侧体育1占7，右侧体育2占3 */
            gap: 12px 8px;
            justify-items: stretch;
            align-items: center;
            margin: 20px 0 15px;
            padding: 0 8px;
        }

        /* 基础按钮样式 (所有按钮) */
        .app-btn {
            width: 100%;
            height: 70px;
            border-radius: 35px;
            background: linear-gradient(145deg, #2a2a3a, #1e1e2c);
            display: flex;
            align-items: center;
            box-shadow: 0 6px 10px rgba(0,0,0,0.6);
            border: 1px solid #4e4e6e;
            cursor: pointer;
            transition: transform 0.1s, background 0.2s;
            padding: 0 5px;
        }

        .app-btn:active {
            transform: scale(0.96);
            background: #35354a;
        }

        /* 第一排按钮 (体育1) 带logo，保持原有风格，但按钮会自然变宽（7份） */
        .btn-logo {
            width: 40%;
            height: 60px;
            background-size: contain;
            background-position: center;
            background-repeat: no-repeat;
            border-right: 2px solid #5a5a7a;
            margin-right: 8px;
            filter: drop-shadow(0 2px 4px black);
        }

        .btn-name {
            width: 60%;
            font-size: 18px;
            font-weight: 600;
            color: #ffdf94;
            letter-spacing: 0.5px;
            text-shadow: 0 2px 4px black;
            text-align: center;
            line-height: 1.2;
            white-space: nowrap;
        }

        /* ===== 第二排按钮 (体育2) 专属样式：去logo，较小，带动画 ===== */
        .app-btn.sport2 {
            /* 按钮高度稍微降低，更小巧 */
            height: 58px;                 /* 比体育1的70px矮一些 */
            border-radius: 29px;
            background: linear-gradient(145deg, #202032, #161622);
            border: 1px solid #d4944a;     /* 暖色边框 */
            justify-content: center;       /* 文字居中 */
            padding: 0;                    /* 去掉内边距 */
            /* 大幅呼吸缩放动画 (幅度保持大) */
            animation: strongPulse 1.5s infinite ease-in-out;
            /* 为了更小，内部文字也调整 */
        }

        /* 隐藏第二排按钮的logo块 (如果有) */
        .app-btn.sport2 .btn-logo {
            display: none;
        }

        /* 第二排按钮文字占满整个按钮，适当缩小字号 */
        .app-btn.sport2 .btn-name {
            width: 100%;
            font-size: 16px;               /* 再小一点配合整体比例 */
            text-align: center;
            border: none;
            margin: 0;
        }

        /* 大幅呼吸缩放动画 (幅度大) */
        @keyframes strongPulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.12); }   /* 幅度保持大 */
            100% { transform: scale(1); }
        }

        /* 移除预留占位符 */
        .btn-placeholder {
            display: none;
        }

        /* 底部固定横幅 —— 整个删除 */
        .bottom-footer {
            display: none;
        }

        /* 弹窗遮罩 & 客服弹窗 —— 隐藏不用 */
        .modal-overlay,
        .social-modal {
            display: none !important;
        }

        /* 微调容器底部 */
        .container {
            margin-bottom: 20px;
        }