:root {
    --primary: #009A7E;
    /* PANTONE 325C */
    --primary-light: #4dc6ac;
    --primary-dark: #006e58;
    --secondary: #29b6f6;
    --accent: #ff9800;
    --light: #f8f9fa;
    --dark: #343a40;
    --success: #28a745;
    --text: #333333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

body {
    color: var(--text);
    line-height: 1.6;
    background-color: #f9f9f9;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 15px;
}

.STYLE1 {
    font-size: 15px;
    font-weight: 600;
    position: relative;
    padding-left: 10px;
    border-left: 2px solid #eee;
    max-width: 200px;
    color: var(--primary);
}

/* ===== 页面标题区域 ===== */
.page-header {
    padding: 100px 0 80px;
    text-align: center;
    background-image: url('https://t31.cngenial.cn/webfile/upload/2025/09-26/11-04-4507721358072868.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    min-height: 551px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: left;
    cursor: pointer;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.page-header .container {
    position: relative;
    z-index: 2;
}

.page-header h1 {
    color: var(--primary);
    font-size: 2.8rem;
    margin-bottom: 20px;
}

.page-header p {
    font-size: 1.2rem;
    line-height: 40px;
    max-width: 563px;
    opacity: 0.95;
}

/* .cta-button {
    background-color: var(--primary);
    color: white;
    padding: 8px 15px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    display: inline-block;
    font-size: 14px;
    margin-top: 35vh;
}

.cta-button:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
} */

/* ===== 系统介绍区域 ===== */
.system-intro {
    padding: 10vw 0;
    background-color: white;
}

.intro-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.intro-text {
    flex: 1;
}

.intro-text h2 {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.intro-text p {
    margin-bottom: 25px;
    font-size: 1.1rem;
    line-height: 1.8;
}

.feature-list {
    margin: 25px 0;
}

.feature-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.feature-icon {
    color: var(--primary);
    font-size: 1.5rem;
    margin-right: 15px;
    width: 30px;
    text-align: center;
}

.intro-image {
    flex: 1;
    text-align: center;
}

.intro-image img {
    max-width: 100%;
    border-radius: 12px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.contact-button {
    background: var(--primary);
    border-radius: 50px;
    color: white;
    padding: 15px 40px;
    text-decoration: none;
    display: inline-block;
    font-weight: 600;
    transition: all 0.3s ease;
    /*box-shadow: 0 4px 15px rgba(0, 154, 126, 0.3);
            border: 2px solid transparent;*/
}

.contact-button:hover {
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

/* ===== 系统组成区域 ===== */
.system-components {
    padding: 90px 0;
    background-color: var(--light);
}

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

.section-title h2 {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--primary);
}

.section-title p {
    max-width: 700px;
    margin: 20px auto 0;
    font-size: 1.2rem;
    color: var(--dark);
    opacity: 0.8;
}

.components-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.component-card {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
    text-align: center;
}

.component-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.12);
}

.component-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 20px;
    display: inline-block;
    height: 80px;
    width: 80px;
    line-height: 80px;
    border-radius: 50%;
    background: rgba(0, 154, 126, 0.1);
}

.component-card h3 {
    color: var(--primary);
    margin-bottom: 15px;
    font-size: 1.4rem;
}

/* ===== 优势特点区域 ===== */
.advantages {
    padding: 90px 0;
    background-color: white;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.advantage-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 25px;
    background: rgba(0, 154, 126, 0.05);
    border-radius: 10px;
    transition: all 0.3s;
}

.advantage-item:hover {
    background: rgba(0, 154, 126, 0.1);
    transform: translateX(5px);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.advantage-icon i {
    color: white;
    font-size: 1.5rem;
}

.advantage-content h3 {
    margin-bottom: 10px;
    color: var(--primary);
	font-size: 1.4rem;
}

/* ===== 应用场景区域 ===== */
.applications {
    padding: 90px 0;
    background-color: var(--light);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.application-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.application-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.12);
}

.application-img {
    background: linear-gradient(45deg, #e9ecef, #f8f9fa);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 2.5rem;
}

.application-content {
    padding: 25px;
}

.application-content h3 {
    color: var(--primary);
    margin-bottom: 15px;
    font-size: 1.4rem;
}

/* ===== 系统工作流程区域 ===== */
.workflow {
    padding: 90px 0;
    background-color: white;
}

.workflow-steps {
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    position: relative;
	gap: 30px;
}

.workflow-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-light);
    z-index: 1;
}

.step {
    text-align: center;
    position: relative;
    z-index: 2;
    flex: 1;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: white;
    border: 2px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    color: var(--primary);
}

.step h3 {
    margin-bottom: 10px;
    color: var(--primary);
}

/* ===== 下载区域 ===== */
.download {
    padding: 90px 0;
    background: url('https://t31.cngenial.cn/webfile/upload/2025/09-23/17-42-370298-5907730.jpg') no-repeat center center;
    background-size: cover;
    text-align: center;
    position: relative;
    min-height: 387px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.download .container {
    position: relative;
    z-index: 2;
}

.download h2 {
    color: var(--primary);
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.download p {
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 40px;
    opacity: 0.9;
}

/* ===== 响应式设计 ===== */
@media (max-width: 992px) {
    .intro-content {
        flex-direction: column;
        gap: 40px;
    }

    .components-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .applications-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .workflow-steps {
        flex-direction: column;
        gap: 40px;
    }

    .workflow-steps::before {
        display: none;
    }
}

@media screen and (max-width: 980px) {
    .STYLE1 {
        display: none;
    }

    .hamburger {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: -100%;
        flex-direction: column;
        background-color: white;
        width: 100%;
        height: calc(100vh - 82px);
        transition: all 0.4s ease;
        padding-top: 10px;
        overflow-y: auto;

    }

    #menu-toggle:checked~.nav-menu {
        left: 0;
        top: 82px;
    }

    .nav-menu li {
        margin: 10px 0;
        width: 100%;
        text-align: center;
    }

    .nav-menu a {
        padding: 15px 20px;
        border-radius: 0;
    }

    .dropdown-content {
        position: static;
        display: none;
        opacity: 1;
        transform: none;
        width: 100%;
        box-shadow: none;
        border-radius: 0;
        background-color: rgba(240, 240, 240, 0.3);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .dropdown-content a {
        color: black;
        border-bottom-color: rgba(255, 255, 255, 0.1);
        padding-left: 40px;
    }

    /* 使用:focus-within和:target实现移动端下拉菜单 */
    .dropdown:focus-within .dropdown-content,
    .dropdown:target .dropdown-content {
        display: block;
        max-height: 500px;
    }
}

@media (max-width: 768px) {
    .page-header {
        min-height: 300px;
        padding: 60px 0 40px;
    }

    .page-header h1 {
        font-size: 2.2rem;
    }

    .page-header p {
        font-size: 1.1rem;
    }

    .components-grid,
    .applications-grid {
        grid-template-columns: 1fr;
    }

    /* 确保移动端内容不会被背景图挤压 */
    .page-header .container,
    .download .container {
        position: relative;
        z-index: 2;
    }

    .intro-text h2 {
        font-size: 1.8rem;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.4rem;
    }

    .nav-menu a {
        padding: 12px 20px;
    }

    .page-header {
        background: url('https://t31.cngenial.cn/webfile/upload/2025/09-27/10-15-040714-1709039165.jpg');
        background-size: contain;
        background-repeat: no-repeat;
        min-height: 59vw;
        padding: 50px 0 30px;
        position: relative;
    }

    .page-header h1 {
        font-size: 1.8rem;
    }

    .page-header p {
        max-width: 200px;
    }

    .download {
        min-height: 200px;
        padding: 40px 0;
    }

    .download h2 {
        font-size: 1.6rem;
    }
}

@media (min-width: 576px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .download {
        min-height: 250px;
        padding: 50px 0;
    }

    .download h2 {
        font-size: 2.2rem;
    }

    .download p {
        font-size: 1rem;
        padding: 0 15px;
    }
}

@media (min-width: 992px) {
    .page-header {
        min-height: 551px;
        padding: 80px 0 60px;
    }

    .page-header h1 {
        font-size: 2.8rem;
    }

    .download {
        min-height: 300px;
        padding: 70px 0;
    }

    .footer-content {
        grid-template-columns: repeat(4, 1fr);
    }
}