* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: "Microsoft YaHei", sans-serif;
    }

    :root {
        --main-color: #24bb9d;
        --dark-color: #1a1a1a;
        --light-bg: #f7f9f8;
        --gray-text: #666;
    }

    body {
        color: #333;
        line-height: 1.7;
    }

    .container {
        width: 100%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    section {
        padding: 70px 0;
    }

    h2 {
        font-size: 32px;
        text-align: center;
        margin-bottom: 40px;
        color: var(--dark-color);
        position: relative;
    }

    h2::after {
        content: "";
        width: 60px;
        height: 4px;
        background: var(--main-color);
        display: block;
        margin: 12px auto 0;
        border-radius: 2px;
    }

    /* ========== 已替换：完整版 Banner 样式 ========== */
    .banner-section {
        width: 100%;
        position: relative;
    }
    .banner {
        width: 100%;
        min-height: 720px;
        height: 37.5vw;
        max-height: 1080px;
        position: relative;
        overflow: hidden;
        display: flex;
        align-items: center;
        justify-content: flex-start;
        text-align: left;
    }
    .banner-bg {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 1;
    }
    .banner-bg img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center;
        display: block;
    }
    .banner-mask {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.4);
        z-index: 2;
    }
    .banner-content {
        position: relative;
        z-index: 3;
        width: 100%;
        max-width: 2560px;
        padding: 0 30px;
        margin-left: 20%;
    }
    .banner-title {
        font-size: clamp(32px, 3vw, 72px);
        font-weight: 700;
        margin-bottom: clamp(10px, 1.5vw, 30px);
        line-height: 1.2;
        white-space: nowrap;
        color: #fff !important;
    }
    .banner-subtitle {
        font-size: clamp(18px, 1.5vw, 32px);
        font-weight: 400;
        opacity: 0.95;
        line-height: 1.5;
        white-space: nowrap;
        color: #fff !important;
    }

    /* --------------------
    模块2 行业痛点 样式
    -------------------- */
    .pain {
        padding: 90px 0;
        background: #f9f9f9;
    }
    .pain-flex {
        display: flex;
        gap: 40px;
        align-items: center;
    }
    .pain-left {
        flex: 1;
    }
    .pain-right {
        flex: 1;
    }
    .pain h2 {
        font-size: 32px;
        margin-bottom: 20px;
        color: #111;
        text-align: left;
    }
    .pain h2::after {
        margin-left: 0;
    }
    .pain p {
        font-size: 16px;
        margin-bottom: 14px;
        color: #555;
    }
    .pain img {
        max-width: 100%;
        border-radius: 10px;
    }

    /* --------------------
    模块3 核心优势 样式
    -------------------- */
    .advantage {
        padding: 90px 0;
        background: #fff;
    }
    .advantage .title {
        text-align: center;
        font-size: 36px;
        margin-bottom: 50px;
    }
    .adv-grid {
        display: grid;
        grid-template-columns: repeat(4,1fr);
        gap: 26px;
    }
    .card {
        background: #fff;
        border-radius: 12px;
        overflow: hidden;
        box-shadow: 0 4px 14px rgba(0,0,0,0.06);
        transition: 0.3s;
    }
    .card:hover {
        transform: translateY(-6px);
    }
    .card img {
        width: 100%;
        height: 180px;
        object-fit: cover;
        border-radius: 12px 12px 0 0;
    }
    .card h3 {
        padding: 16px 20px 6px;
        font-size: 24px;
        color: #111111;;
    }
    .card p {
        padding: 0 20px 20px;
        font-size: 14px;
        color: #666;
    }

    /* --------------------
    模块4 应用领域 样式
    -------------------- */
    .application {
        padding: 90px 0;
        background: #f4f7fc;
    }
    .application .title {
        text-align: center;
        font-size: 36px;
        margin-bottom: 12px;
    }
    .application .sub {
        text-align: center;
        color: #666;
        font-size: 18px;
        margin-bottom: 50px;
    }
    .app-grid {
        display: grid;
        grid-template-columns: repeat(3,1fr);
        gap: 26px;
    }
    .app-card {
        position: relative;
        border-radius: 12px;
        overflow: hidden;
    }
    .app-card img {
        width: 100%;
        height: 240px;
        object-fit: cover;
    }
    .app-card h3 {
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        padding: 20px;
        color: #fff;
        background: linear-gradient(transparent, rgba(0,0,0,0.6));
        font-size: 24px;
    }

    /* 替换后的 FAQ 样式 */
    .section.faq {
        background: #ffffff;
    }
    .faq-item {
        background: white;
        margin-bottom: 15px;
        border-radius: 8px;
        overflow: hidden;
        border: 1px solid #eee;
    }
    .faq-question {
        padding: 20px;
        background: #fff;
        color: #222;
        font-weight: bold;
        cursor: pointer;
    }
    .faq-answer {
        padding: 20px;
        color: #555;
        line-height: 1.7;
        display: none;
        border-top: 1px solid #eee;
    }
    .faq-item.active .faq-answer {
        display: block;
    }

    .cta {
        background: var(--main-color);
        color: white;
        text-align: center;
        padding: 60px 0;
    }
    .cta h2 {
        color: white;
        font-size: 32px;
        margin-bottom: 30px;
    }
    .cta h2::after {
        background: white;
    }
    .cta-buttons {
        display: flex;
        justify-content: center;
        gap: 20px;
        flex-wrap: wrap;
    }
    .cta-btn {
        padding: 14px 36px;
        background: white;
        color: var(--main-color);
        border-radius: 50px;
        font-size: 16px;
        font-weight: bold;
        border: none;
        cursor: pointer;
        transition: 0.3s;
    }
    .cta-btn:hover {
        background: #f0f0f0;
        transform: scale(1.05);
    }

    /* 响应式 */
    @media (max-width: 992px) {
        .adv-grid { grid-template-columns: repeat(2,1fr); }
        .app-grid { grid-template-columns: repeat(2,1fr); }
        .pain-flex { flex-direction: column; }
    }
    @media (max-width: 768px) {
        .banner {
            min-height: 500px;
            height: auto;
        }
        .banner-content {
            margin-left: 0;
            padding: 60px 20px;
        }
        .banner-title,
        .banner-subtitle {
            white-space: inherit;
        }
        .adv-grid { grid-template-columns: 1fr; }
        .app-grid { grid-template-columns: 1fr; }
        h2 { font-size: 28px; }
        section { padding: 50px 0; }
    }