.banner-rummy-bg {
    background: linear-gradient(to right, #590411, #570d16);
}
.game-section {
    padding: 30px 0;
    width: 100%;
    background-color: #04091c;
}
.section-title {
    font-size: 22px;
    font-weight: bold;
    color: var(--text-white);
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    padding-bottom: 12px;
}
.section-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 320px;
    height: 1px;
    background: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.4) 50%, rgba(255,255,255,0) 100%);
}

.game-cards-wrap {
    max-width: 600px;
    margin: 0 auto;
    gap: 60px;
}
.game-card {
    flex: 1;
    background: rgba(10, 25, 47, 0.7);
    border: 1px solid rgba(41, 121, 255, 0.2);
    border-radius: 12px;
    padding: 40px 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4), inset 0 0 15px rgba(41, 121, 255, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.game-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(41, 121, 255, 0.1);
    border-color: rgba(41, 121, 255, 0.4);
}
.card-icon {
    width: 100px;
    height: 100px;
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.card-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.card-title {
    font-size: 18px;
    font-weight: bold;
    color: #ffcc00;
    letter-spacing: 1px;
    margin-bottom: 16px;
}
.card-desc {
    max-width: 230px;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.3;
    margin-bottom: 30px;
    min-height: 42px;
}
.card-btn {
    display: inline-block;
    width: 100%;
    max-width: 180px;
    background: linear-gradient(180deg, #34a853 0%, #1e7e34 100%);
    color: var(--text-white);
    font-size: 16px;
    font-weight: bold;
    padding: 10px 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    text-align: center; /* 修正：确保 Download 按钮文本严格水平居中 */
    transition: all 0.2s ease;
}
.card-btn:hover {
    background: linear-gradient(180deg, #42be63 0%, #24923f 100%);
    box-shadow: 0 6px 15px rgba(52, 168, 83, 0.4);
    transform: scale(1.02);
}

/* ==========================================================================
   5. 底部浅色信息区 (纯白背景)
   ========================================================================== */
.info-section {
    background-color: #ffffff;
    color: #333333;
    padding: 60px 0;
    font-size: 14px;
    line-height: 1.6;
}
.info-wrap {
    max-width: 900px;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 auto;
}
.info-section h2 {
    font-size: 16px;
    color: #222222;
    align-self: flex-start;
    margin-bottom: 15px;
}
.info-section p {
    color: #555555;
    margin-bottom: 25px;
    text-align: left;
}

/* ==========================================================================
   6. 可点击 Tabs 选项卡核心控制 (深度还原底边高亮短横线风格)
   ========================================================================== */
.info-tabs {
    width: 100%;
    background-color: #f1f3f6;
    display: flex;
    padding: 0;
    margin-bottom: 25px;
    border-bottom: 1px solid #e0e4ec; /* 通底的全局浅灰色底层引导线 */
}
.tab-item {
    font-size: 14px;
    font-weight: bold;
    color: #666666; /* 默认状态为柔和深灰，突出未选中感 */
    padding: 14px 28px;
    cursor: pointer;
    user-select: none;
    background: transparent;
    transition: all 0.2s ease;
    border-left: none; /* 移除误加的左侧边框 */
    border-bottom: 2px solid transparent; /* 预留底部高亮指示条位置，避免切换时页面抖动 */
}

/* 完美修正：点击激活时仅出现底部贴合在底线之上的深蓝色短横线 */
.tab-item.active {
    color: #222222; /* 激活时文字变黑加深 */
    background: transparent;
    border-bottom: 2px solid #032146; /* 核心：底部深蓝色高亮粗指示线 */
    margin-bottom: -1px; /* 关键技巧：向下踩 1 像素，完美遮压住全局的 info-tabs 底线 */
}

.tab-pane {
    display: none;
    width: 100%;
}
.tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease-in-out;
}

.more-link {
    color: #032146;
    text-decoration: underline;
    font-weight: bold;
    align-self: flex-start;
    margin-top: 20px;
    font-size: 14px;
}