.index_main {
    position: relative;
    width: 100%;
    min-height: 200px;
    display: block;
    margin: 0 auto;
    overflow: hidden; 
}
.index_mainbox {
    position: relative;
    width: 100%;
    max-width: 1200px;
    display: block;
    margin: 0 auto;

}


/* 基础样式与重置 */
    .hw-wrapper {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        color: #333;
        line-height: 1.6;
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    .hw-wrapper * {
        box-sizing: inherit;
    }

    /* 响应式容器 */
    .hw-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    /* Hero 区域 */
    .hw-hero {
        position: relative;
        height: 100vh;
        min-height: 600px;
        background: url('https://www.helloworldid.com/wp-content/uploads/2026/04/bg2-scaled.webp') no-repeat center center/cover;
        display: flex;
        flex-direction: column;
        justify-content: center; /* 保持居中基础 */
        align-items: center;
        text-align: center;
        color: #fff;
        padding-top: 0; /* 移除之前的 padding */
    }

    .hw-hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.6)); /* 改为深色渐变遮罩，增强氛围感 */
        z-index: 1;
    }

    .hw-hero-content {
        position: relative;
        z-index: 2;
        width: 100%;
        max-width: 900px;
        margin-top: -150px; /* 向上移动 150px，减少顶部视觉留白 */
    }

    .hw-hero h1 {
        font-size: 4rem;
        color: #fff; /* 改为白色，在深色背景下更醒目 */
        margin-bottom: 20px;
        font-weight: 800;
        text-shadow: 0 4px 20px rgba(0,0,0,0.3);
    }

    .hw-hero p {
        font-size: 1.5rem;
        color: rgba(255, 255, 255, 0.9); /* 改为浅白色 */
        margin-bottom: 40px;
        font-weight: 500;
        text-shadow: 0 2px 10px rgba(0,0,0,0.2);
    }

    .hw-cta-group {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .hw-btn-primary {
        background: #4361ee; /* 改为强烈对比的品牌蓝 */
        color: #fff; /* 白色文字 */
        padding: 18px 50px;
        border-radius: 50px;
        text-decoration: none;
        font-weight: bold;
        font-size: 1.3rem;
        display: inline-flex;
        align-items: center;
        gap: 12px;
        box-shadow: 0 10px 25px rgba(67, 97, 238, 0.4); /* 增加蓝色阴影，更具悬浮感 */
        transition: all 0.3s ease;
    }

    .hw-btn-primary:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 30px rgba(67, 97, 238, 0.5);
        background: #3752d5;
    }

    .hw-other-platforms {
        font-size: 0.9rem;
        color: rgba(255, 255, 255, 0.8);
    }

    /* 底部社交/平台图标区域 */
    .hw-hero-footer {
        position: absolute;
        bottom: 120px; /* 从 50px 提升到 120px，紧跟主体内容 */
        left: 50%;
        transform: translateX(-50%);
        z-index: 2;
        background: rgba(255, 255, 255, 0.15); /* 降低亮度，适配深色背景 */
        backdrop-filter: blur(15px);
        padding: 20px 40px;
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 60px;
        display: flex;
        gap: 30px;
        flex-wrap: wrap;
        justify-content: center;
        max-width: 90%;
        box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    }

    .hw-platform-icon {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 5px;
        color: #fff; /* 改为白色 */
        text-decoration: none;
        font-size: 0.8rem;
        opacity: 0.8;
        transition: all 0.3s;
    }

    .hw-platform-icon:hover {
        opacity: 1;
    }

    .hw-platform-icon i {
        font-size: 1.5rem;
    }

    /* 软件特点介绍 */
    .hw-section {
        padding: 100px 0;
        background: #fff;
    }

    .hw-section:nth-child(even) {
        background: #f8f9fa;
    }

    .hw-section-title {
        text-align: center;
        margin-bottom: 60px;
    }

    .hw-section-title h2 {
        font-size: 2.5rem;
        color: #222;
        margin-bottom: 15px;
    }

    .hw-feature-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 40px;
    }

    .hw-feature-item {
        padding: 30px;
        text-align: center;
        border-radius: 15px;
        transition: all 0.3s ease;
    }

    .hw-feature-item:hover {
        background: #fff;
        box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    }

    .hw-feature-item h3 {
        font-size: 1.5rem;
        margin: 20px 0;
        color: #4361ee;
    }

    /* 权威数据 */
    .hw-stats {
        background: #4361ee;
        color: #fff;
        padding: 80px 0;
        text-align: center;
    }

    .hw-stats-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 40px;
    }

    .hw-stat-num {
        font-size: 3rem;
        font-weight: 800;
        display: block;
    }

    .hw-stat-label {
        font-size: 1.1rem;
        opacity: 0.9;
    }

    /* 用户评价 */
    .hw-reviews-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
    }

    .hw-review-card {
        background: #fff;
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    }

    .hw-review-content {
        font-style: italic;
        margin-bottom: 20px;
    }

    .hw-review-user {
        display: flex;
        align-items: center;
        gap: 15px;
    }

    .hw-user-avatar {
        width: 50px;
        height: 50px;
        background: #eee;
        border-radius: 50%;
    }

    /* FAQ */
    .hw-faq-list {
        max-width: 800px;
        margin: 0 auto;
    }

    .hw-faq-item {
        margin-bottom: 20px;
        border-bottom: 1px solid #eee;
        padding-bottom: 20px;
    }

    .hw-faq-item h3 {
        font-size: 1.2rem;
        margin-bottom: 10px;
        color: #4361ee;
    }

    /* 移动端适配 */
    @media (max-width: 768px) {
        .hw-hero {
            height: 35vh; /* 略微调高，给元素留出呼吸空间 */
            min-height: 320px;
            padding: 0;
            background-attachment: scroll;
            background-position: center 25%; /* 更好地对焦人物 */
            justify-content: center;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .hw-hero-content {
            margin-top: 0;
            padding: 0 10px;
            text-align: center;
        }
        .hw-hero-footer {
            position: relative; /* 核心修复：取消绝对定位，让其在文档流中排在按钮下方 */
            bottom: auto;
            left: auto;
            transform: none;
            margin-top: 15px;
            width: 100%;
            background: none; /* 核心修复：移除巨大的模糊背景盒 */
            backdrop-filter: none;
            border: none;
            box-shadow: none;
            padding: 0;
            gap: 12px;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
        }
        .hw-platform-icon {
            flex-direction: column; /* 图标文字垂直排列 */
            gap: 4px;
        }
        .hw-platform-icon span {
            font-size: 0.65rem; /* 缩小文字 */
            opacity: 0.8;
        }
        .hw-platform-icon svg {
            width: 20px;
            height: 20px;
            filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5));
        }
        .hw-hero h1 {
            font-size: 1.6rem;
            margin-bottom: 5px;
            text-shadow: 0 2px 10px rgba(0,0,0,0.8);
        }
        .hw-hero p {
            font-size: 0.85rem;
            margin-bottom: 15px;
            max-width: 280px;
            line-height: 1.3;
        }
        .hw-btn-primary {
            width: 75%;
            padding: 12px 0;
            font-size: 1rem;
            justify-content: center;
        }
        .hw-other-platforms {
            margin-top: 8px;
            font-size: 0.75rem;
        }
        .hw-section {
            padding: 40px 0;
        }
        .hw-section-title h2 {
            font-size: 1.8rem;
        }
        .hw-feature-grid {
            grid-template-columns: 1fr;
        }
        .hw-stats-grid {
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }
        .hw-stat-num {
            font-size: 1.8rem;
        }
        .hw-reviews-grid {
            grid-template-columns: 1fr;
        }
    }

    /* 极小屏幕适配 (如 iPhone SE) */
    @media (max-width: 375px) {
        .hw-hero h1 {
            font-size: 1.8rem;
        }
        .hw-hero-footer {
            gap: 5px;
        }
        .hw-platform-icon svg {
            width: 20px;
            height: 20px;
        }
    }