* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

/* 1. 修复body样式 - 恢复原来的灰色背景 */
body {
    background-color: #f5f5f7;
    color: #333;
    line-height: 1.5;
    padding: 0;
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 2. 确保头部占位符是固定定位的 */
#header-placeholder {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: #1a1a1a;
    color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 3. 创建主包装器，为头部导航栏预留空间 */
.main-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 80vh;
    padding-top: 80px; /* 假设头部导航栏高度为80px */
    flex: 1;
    width: 100%;
}

/* 4. 修复容器样式 - 添加玻璃拟态效果 */
.container {
    max-width: 1080px;
    width: 100%;
    margin: 20px auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    position: relative;
    z-index: 1;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 128, 255, 0.2);
}

.header {
    padding: 24px 30px 20px;
    border-bottom: 1px solid #eaeaea;
}

.header h1 {
    color: #1a1a1a;
    font-size: 24px;
    font-weight: 600;
    margin: 0;
}

/* 修改主要内容区域布局 - 调整左右比例 */
.main-content {
    display: flex;
    min-height: 600px;
    padding: 25px;
    gap: 30px; /* 保持间距 */
}

/* 左侧输入区域 - 缩小比例 */
.left-panel {
    flex: 1.7; /* 缩小左侧比例 */
    display: flex;
    flex-direction: column;
        height: auto;

  /*height: 515px !important;  固定最大高度，和你原来的 min-height 一致 */
  
}

/* 右侧控制区域 - 缩小比例 */
.right-panel {
    flex: 1; /* 缩小右侧比例 */
    display: flex;
    flex-direction: column;
}

.input-section {
    /*flex: 1;*/
    display: flex;
    flex-direction: column;
}

.input-header {
    margin-bottom: 12px;
}

.char-count {
    color: #000000 !important;;
    font-size: 14px;
    font-weight: 700;
}

/* 美化textarea样式 */
textarea {
    width: 100%;
    height: 360px;
    min-height: 300px;
    padding: 20px;
    border: 2px solid #e0e0e0;
    border-radius: 16px;
    font-size: 15px;
    resize: none;
    line-height: 1.6;
    background: linear-gradient(145deg, #f8f9fa, #ffffff);
    transition: all 0.3s ease;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

textarea:focus {
    outline: none;
    border-color: #0080ff;
    box-shadow: 0 0 0 3px rgba(0, 128, 255, 0.15), 0 4px 12px rgba(0, 128, 255, 0.1);
    background: #ffffff;
}

textarea::placeholder {
    color: #ffffff; /* 占位符颜色 */
    font-style: italic; /* 占位符斜体 */
}

/* 悬停效果 */
textarea:hover {
    border-color: #0080ff;
    box-shadow: 0 4px 12px rgba(0, 128, 255, 0.1);
}

/* 禁用状态 */
textarea:disabled {
    border-color: #e0e0e0;
    background-color: #f9f9f9;
    cursor: not-allowed;
    opacity: 0.7;
}

.ai-note {
    font-size: 12px;
    color: #999;
    margin-top: 16px;
    padding: 12px 16px;
    background-color: #f9f9f9;
    border-radius: 6px;
    border-left: 3px solid #ff9500;
    line-height: 1.5;
}

.ai-note i {
    color: #ff9500;
    margin-right: 6px;
}

.voice-player {
    margin-top: 5px;
    background-color: #f8f9fa;
    border-radius: 8px;
   padding: 5px 5px; 
    border: 1px solid #e9ecef;
    display: none;
    animation: fadeIn 0.3s ease;
        min-height: auto; /* 移除固定高度，让内容决定高度 */
    max-height: 80px; /* 设置最大高度限制 */
}

.success-message {
    color: #00a950;
    font-weight: 500;
    font-size: 15px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.player-controls {
    display: flex;
    align-items: center;
    gap: 12px; /* 从16px减小到12px */
    flex-wrap: nowrap; /* 防止换行 */
}

.play-btn {
    background-color: #1a1a1a;
    color: white;
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: background-color 0.2s;
    flex-shrink: 0;
}

.play-btn:hover {
    background-color: #333;
}

.progress-container {
    flex: 1;
    height: 6px;
    background-color: #e0e0e0;
    border-radius: 3px;
    overflow: hidden;
    cursor: pointer;
    transition: height 0.2s;
}

.progress-container:hover {
    height: 8px;
}

.progress-bar {
    height: 100%;
    background-color: #1a1a1a;
    width: 0%;
    transition: width 0.1s;
}

.time-display {
    font-size: 13px;
    color: #666;
    font-family: 'Courier New', monospace;
    min-width: 120px;
    text-align: center;
    flex-shrink: 0;
}

.download-btn {
    background: linear-gradient(135deg, #0080ff 0%, #0066cc 100%);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s ease;
    flex-shrink: 0;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(0, 128, 255, 0.3);
}

.download-btn:hover {
    background: linear-gradient(135deg, #0066cc 0%, #0080ff 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 128, 255, 0.4);
}

.control-section {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.control-group label {
    font-weight: 500;
    color: #1a1a1a;
    font-size: 15px;
}

/* 自定义下拉框样式 */
.select-wrapper {
    position: relative;
    width: 100%;
}

/* 自定义下拉框触发器 */
.custom-select-trigger {
    width: 100%;
    padding: 12px 20px;
    border: 1.5px solid #000000;
    border-radius: 10px;
    background-color: #fff;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s ease;
    height: 48px;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.05), 0 2px 0 rgba(0, 28, 56, 0.85);

    color: #333;
        position: relative; /* 为阴影定位做准备 */

}

.custom-select-trigger:hover {
    background-color: #d8dbe0; /* 完全匹配图片中的灰蓝色 */
    border-color: #000000; /* 悬停时边框颜色稍深 */
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* 触发器中的内容 */
.selected-option-content {
    display: flex;
    align-items: center;
    width: 100%;
    font-size: 15px;
    font-weight: 500;
}

.selected-option-content .main-text {
    font-weight: 600;
    min-width: 60px;
}

.selected-option-content .sub-text {
    margin-left: 20px;
    color: #666;
    font-size: 14px;
    font-weight: 400;
}

/* 向下箭头 */
.custom-select-trigger i.fa-chevron-down {
    color: #666;
    font-size: 16px;
    transition: transform 0.2s ease;
    margin-left: 10px;
}

.select-wrapper.open .custom-select-trigger i.fa-chevron-down {
    transform: rotate(180deg);
}

/* 自定义下拉框选项容器 */
.custom-select-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    margin-top: 8px;
    padding: 0;
    z-index: 1000;
    display: none;
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid #e0e0e0;
}

.select-wrapper.open .custom-select-dropdown {
    display: block;
}

/* 单个选项 */
.custom-select-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    cursor: pointer;
    transition: background-color 0.2s;
    border-bottom: 1px solid #f0f0f0;
    position: relative;
}

.custom-select-option:last-child {
    border-bottom: none;
}

.custom-select-option:hover {
    background-color: #f9f9f9;
}

/* 选中状态的选项 */
.custom-select-option.selected {
    background-color: #f5f5f5;
    color: #333;
}

/* 选项内容 */
.option-content {
    display: flex;
    flex-direction: column;
    color: #333;
    font-size: 14px;
    line-height: 1.4;
}

.option-main-text {
    font-weight: 600;
    margin-bottom: 4px;
    font-size: 14px;
}

.option-detail-text {
    color: #666;
    font-size: 12px;
    font-weight: 400;
}

/* 勾选标记 */
.custom-select-option i.fa-check {
    color: #666;
    font-size: 14px;
    margin-left: 10px;
    display: none;
}

.custom-select-option.selected i.fa-check {
    display: block;
}

/* ========== 修改声音列表样式 ========== */
.voice-list {
    display: flex;
    flex-direction: column;
    gap: 6px; /* 卡片之间的间距 */
    max-height: 210px;
    overflow-y: auto;
    padding: 2px; /* 添加一点内边距，使滚动条不紧贴边框 */
}

.voice-list::-webkit-scrollbar {
    width: 6px;
}

.voice-list::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.voice-list::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}

.voice-list::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 美化语音选项卡片样式 */
.voice-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    transition: all 0.3s ease;
    cursor: pointer;
    height: 58px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.voice-option:hover {
    background: linear-gradient(145deg, #f0f8ff, #ffffff);
    border-color: #0080ff;
    box-shadow: 0 4px 12px rgba(0, 128, 255, 0.15);
    transform: translateY(-1px);
}

.voice-option.selected {
    background: linear-gradient(135deg, #0080ff 0%, #1c8dff 100%);
    border-color: #0080ff;
    box-shadow: 0 4px 15px rgba(0, 128, 255, 0.3);
}

.voice-option.selected .voice-name,
.voice-option.selected .voice-type {
    color: #ffffff;
}

.voice-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.voice-name {
    font-weight: 500;
    color: #1a1a1a;
    margin-bottom: 4px;
    font-size: 15px;
}

.voice-type {
    font-size: 12px;
    color: #666; /* 改为深灰色，更易读 */
    font-weight: 400;
    display: flex;
    align-items: center;
}

/* 添加字数限制样式，参考图2 */
.voice-limit {
    font-size: 11px;
    color: #999;
    background-color: #f0f0f0;
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: 8px;
    display: inline-block;
}

/* ========== 播放按钮样式 ========== */
/* ========== 播放按钮样式 ========== */
.play-sample {
    background-color: #f0f0f0; /* 灰色背景，无边框 */
    border: none;
    border-radius: 50%; /* 圆形 */
    cursor: pointer;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s;
    position: relative; /* 为伪元素定位做准备 */
}

.play-sample:hover {
    background-color: #e5e5e5; /* 悬停时背景稍微变深 */
    transform: scale(1.05);
}

/* 默认状态：播放图标（三角形） */
.play-sample::before {
    content: "";
    display: block;
    width: 0;
    height: 0;
    border-left: 8px solid #333; /* 深灰色三角形，减小尺寸 */
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    margin-left: 2px; /* 微调位置，使三角形居中 */
    transition: all 0.2s;
}

/* 播放状态（暂停图标）：两个垂直长方形条块 */
.play-sample.playing::before {
    content: "";
    position: absolute;
    width: 4px; /* 增加宽度，更明显 */
    height: 14px; /* 增加高度 */
    background-color: #000; /* 纯黑色 */
    border: none; /* 移除三角形边框 */
    left: calc(50% - 5px); /* 第一个长方形位置 */
    top: 50%;
    transform: translateY(-50%);
    margin-left: 0;
    border-radius: 1px; /* 轻微圆角 */
}

.play-sample.playing::after {
    content: "";
    position: absolute;
    width: 4px; /* 第二个长方形宽度 */
    height: 14px; /* 第二个长方形高度 */
    background-color: #000; /* 纯黑色 */
    left: calc(50% + 1px); /* 第二个长方形位置，与第一个间隔2px */
    top: 50%;
    transform: translateY(-50%);
    border-radius: 1px; /* 轻微圆角 */
}

/* 隐藏原来的字体图标 */
.play-sample i {
    display: none;
}

.action-buttons {
    display: flex;
    gap: 12px;
    margin-top: 8px;
    position: relative;
       margin-bottom: 2px; /* 新增：把按钮组底部间距压到最小 */
}

.convert-btn {
    flex: 1;
    background: linear-gradient(135deg, #0080ff 0%, #0066cc 100%);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 16px 24px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
    height: 50px;
    box-shadow: 0 4px 15px rgba(0, 128, 255, 0.4);
}

.convert-btn:hover:not(:disabled) {
    background: linear-gradient(135deg, #0066cc 0%, #0080ff 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 128, 255, 0.5);
}
/* 输入框为空警告提示（美化样式） */
.warning-toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #ffa726 0%, #ff9500 100%);
    color: white;
    padding: 18px 28px;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(255, 149, 0, 0.4);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1000;
    display: none;
    animation: slideInRight 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.warning-toast.show {
    display: flex;
}
.convert-btn:disabled {
    background-color: #0052d9;
    cursor: not-allowed;
        /*opacity: 0.6;  增加透明度，使其看起来更"禁用" */

}
.convert-btn:disabled:hover {
    background-color: #0052d9; /* 禁用状态下悬停不改变颜色 */
}

.advanced-btn {
    background: linear-gradient(145deg, #f0f0f0, #e8e8e8);
    color: #1a1a1a;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 16px 20px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
    min-width: 120px;
    position: relative;
    height: 50px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.advanced-btn:hover {
    background: linear-gradient(145deg, #e8e8e8, #e0e0e0);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.advanced-btn.active {
    background: linear-gradient(135deg, #0080ff 0%, #0066cc 100%);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(0, 128, 255, 0.4);
}

/* 高级配置区块样式（替代原来的弹窗） */
.advanced-config-block {
    background: linear-gradient(135deg, #f0f8ff 0%, #e6f2ff 100%);
    border-radius: 16px;
    padding: 20px !important;
    margin-top: 10px !important;
    display: none;
    animation: fadeIn 0.3s ease-out;
    border: 1px solid rgba(0, 128, 255, 0.2);
    box-shadow: 0 4px 15px rgba(0, 128, 255, 0.1);
}

.advanced-config-block.show {
    display: block;
}

.advanced-config-block .config-item {
    margin-bottom: 20px;
}

.advanced-config-block .config-item:last-child {
    margin-bottom: 0;
}

.advanced-config-block .config-item label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #1a1a1a;
    font-size: 18px; /* 放大标签字体，更醒目 */
}

/* 适配区块内的下拉框样式 */
.advanced-config-block .select-wrapper {
    position: relative;
    width: 100%;
}

.advanced-config-block select {
    width: 100%;
    padding: 14px 20px;
    border: none;
    border-radius: 8px;
    background-color: white;
    font-size: 16px;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
}

.advanced-config-block .select-wrapper i.fa-chevron-down {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #333;
    pointer-events: none;
}

.loading {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

.success-toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #00c853 0%, #00a950 100%);
    color: white;
    padding: 18px 28px;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 169, 80, 0.4);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1000;
    display: none;
    animation: slideInRight 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.success-toast.show {
    display: flex;
}

.toast-content {
    font-weight: 500;
    font-size: 15px;
}

.toast-close {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 18px;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.toast-close:hover {
    opacity: 1;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(100px); }
    to { opacity: 1; transform: translateX(0); }
}

@media (max-width: 900px) {
    .main-wrapper {
        padding-top: 60px; /* 移动端头部可能较矮 */
    }

    .container {
        margin: 10px auto; /* 移动端减少外边距 */
        border-radius: 8px;
    }

    .main-content {
        flex-direction: column;
        padding: 20px;
        gap: 20px;
    }

    .right-panel {
        width: 100%;
    }

    .advanced-config-block {
        min-width: 100%;
    }

    .success-toast {
        bottom: 20px;
        right: 20px;
        left: 20px;
    }
}
/* 转换失败提示弹窗（美化样式） */
.error-toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #ff5e57 0%, #ff3b30 100%);
    color: white;
    padding: 18px 28px;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(255, 59, 48, 0.4);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1000;
    display: none;
    animation: slideInRight 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border: 1px solid rgba(255, 255, 255, 0.2);
}
.error-toast.show {
    display: flex;
}
/* 工具描述文字样式 - 美化 */
.tool-description {
    margin-top: 10px;
    padding: 16px 20px;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 12px;
    border: 1px solid rgba(0, 128, 255, 0.1);
    font-size: 15px;
    line-height: 1.7;
    color: #555;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.tool-description p {
    margin: 0;
    text-align: justify;
}

.tool-description strong {
    font-weight: 700;
    background: linear-gradient(135deg, #0080ff 0%, #0066cc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 快速教程 - 美化样式 */
.container .tutorial-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%) !important;
    padding: 40px !important;
    margin-top: 20px !important;
    border-radius: 20px !important;
    max-width: 1000px !important;
    margin-left: auto !important;
    margin-right: auto !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08) !important;
    border: 1px solid rgba(0, 128, 255, 0.1) !important;
}

.container .section-title {
    text-align: center !important;
    font-size: 28px !important;
    font-weight: 700 !important;
    background: linear-gradient(135deg, #0080ff 0%, #0066cc 100%) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
    margin-bottom: 35px !important;
}

.container .tutorial-steps {
    display: flex !important;
    flex-direction: column !important;
    gap: 20px !important;
}

.container .step-item {
    display: flex !important;
    gap: 15px !important;
    align-items: flex-start !important;
    padding: 15px !important;
    background: rgba(255, 255, 255, 0.8) !important;
    border-radius: 12px !important;
    transition: all 0.3s ease !important;
}

.container .step-item:hover {
    background: rgba(0, 128, 255, 0.05) !important;
    transform: translateX(5px) !important;
}

.container .step-number {
    width: 40px !important;
    height: 40px !important;
    background: linear-gradient(135deg, #0080ff 0%, #0066cc 100%) !important;
    color: white !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-weight: 700 !important;
    flex-shrink: 0 !important;
    font-size: 16px !important;
    box-shadow: 0 4px 10px rgba(0, 128, 255, 0.3) !important;
}

.container .step-content {
    flex: 1 !important;
}

.container .step-content h3 {
    font-size: 17px !important;
    font-weight: 600 !important;
    color: #1a1a1a !important;
    margin-bottom: 8px !important;
}

.container .step-content p {
    font-size: 14px !important;
    color: #666 !important;
    line-height: 1.6 !important;
    margin: 0 !important;
}

/* 使用场景 - 美化样式 */
.container .use-cases-section {
    padding: 40px !important;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%) !important;
    margin-top: 20px !important;
    border-radius: 20px !important;
    max-width: 1000px !important;
    margin-left: auto !important;
    margin-right: auto !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08) !important;
    border: 1px solid rgba(0, 128, 255, 0.1) !important;
}

.container .use-cases-grid {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 20px !important;
}

.container .use-case-item {
    background: linear-gradient(145deg, #ffffff, #f8f9fa) !important;
    border-radius: 16px !important;
    padding: 24px !important;
    transition: all 0.3s ease !important;
    border: 1px solid rgba(0, 128, 255, 0.1) !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05) !important;
}

.container .use-case-item:hover {
    transform: translateY(-5px) !important;
    box-shadow: 0 8px 25px rgba(0, 128, 255, 0.2) !important;
    border-color: rgba(0, 128, 255, 0.3) !important;
}

.container .use-case-icon {
    display: flex !important;
    gap: 12px !important;
    margin-bottom: 16px !important;
    font-size: 24px !important;
    background: linear-gradient(135deg, #0080ff 0%, #0066cc 100%) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
}

.container .use-case-item h3 {
    font-size: 18px !important;
    font-weight: 600 !important;
    color: #1a1a1a !important;
    margin-bottom: 12px !important;
}

.container .use-case-item p {
    font-size: 14px !important;
    color: #666 !important;
    line-height: 1.6 !important;
    margin: 0 !important;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container .tutorial-section,
    .container .use-cases-section {
        padding: 20px !important;
    }

    .container .use-cases-grid {
        grid-template-columns: 1fr !important;
    }

    .container .step-item {
        flex-direction: column !important;
        gap: 10px !important;
    }

    .container .step-number {
        align-self: flex-start !important;
    }
}

@media (max-width: 480px) {
    .container .tutorial-section,
    .container .use-cases-section {
        padding: 15px !important;
        margin-top: 20px !important;
    }

    .container .section-title {
        font-size: 20px !important;
        margin-bottom: 20px !important;
    }

    .container .use-case-item {
        padding: 15px !important;
    }
}