* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

body {
  font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, Arial, sans-serif;
  color: #1a1a1a;
  background: #f7f9fb;
  overflow-x: hidden;
}

/* 主题色：科技绿 */
:root {
  --tech-green: #25c371;
  --dark-green: #00b578;
  --light-green: #e6f7f1;
  --gray-text: #555;
  --white: #fff;
  --shadow: 0 8px 30px rgba(0, 181, 120, 0.12);
}

.container {
  margin: 0 auto;
  max-width: 1440px;
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 18px 12%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 999;
  box-shadow: var(--shadow);
}

.logo {
  color: #111;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 36px;
}

.nav-menu {
  display: flex;
  gap: 40px;
  list-style: none;
}

.nav-menu a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
  font-size: 16px;
  transition: 0.3s;
}

    .nav-menu a:hover, .nav-menu .current a{
        color: var(--tech-green);
    }
    .menu-toggle {
  display: none;
  font-size: 24px;
  color: #333;
  cursor: pointer;
}

.btn {
  padding: 12px 28px;
  border-radius: 50px;
  border: none;
  background: var(--tech-green);
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: 0.3s;
  font-size: 14px;
}

.btn:hover {
  background: var(--dark-green);
  transform: translateY(-2px);
}

.qrcode img {
  width: 160px;
  border: 5px solid #fff;
  border-radius: 8px;
}

/* 大屏英雄区 */
.hero {
  height: 100vh;
  padding: 0 12%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, #ffffff 0%, #e6f7f1 100%);
  margin-top: 80px;
}

.hero-text {
  max-width: 560px;
}

.hero h1 {
  font-size: 42px;
  line-height: 1.2;
  margin-bottom: 24px;
  color: #111;
}

.hero h1 span {
  color: var(--tech-green);
}

.hero h3 {
  font-size: 32px;
  line-height: 1.2;
  margin-bottom: 24px;
  color: #111;
}

.hero p {
  font-size: 18px;
  color: var(--gray-text);
  line-height: 1.7;
  margin-bottom: 40px;
}

.hero-img {
  animation: float 4s ease-in-out infinite;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-20px);
  }
}

/* 区块通用样式 */
.section {
  padding: 100px 12%;
  text-align: center;
}

.section-title {
  font-size: 36px;
  margin-bottom: 18px;
}

.section-title span {
  color: var(--tech-green);
}

.section-desc {
  max-width: 650px;
  margin: 0 auto 60px;
  color: var(--gray-text);
  font-size: 16px;
  line-height: 1.6;
}

/* 核心优势 */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.feature-card {
  background: white;
  padding: 40px 30px;
  border-radius: 20px;
  box-shadow: var(--shadow);
  transition: 0.4s;
}

.feature-card:hover {
  transform: translateY(-10px);
}

.feature-card i {
  font-size: 40px;
  color: var(--tech-green);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 20px;
  margin-bottom: 14px;
}

.feature-card p {
  color: var(--gray-text);
  font-size: 15px;
  line-height: 1.6;
}

/* 功能模块 */
.functions {
  background: #effaf6;
  position: relative;
}

.func-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.func-item {
   position: relative; /* 必须 */
  background: white;
  padding: 35px;
  border-radius: 3px;
  text-align: left;
    border: 3px solid #fff;
  
}

.func-item:hover {
   border: 3px solid var(--tech-green);
}


.func-item h4 {
  font-size: 18px;
  margin: 15px 0 10px;
  color: #222;
}

.func-item i {
  color: var(--tech-green)
}

.func-item p {
  color: #666;
  font-size: 14px;
}

/* 专属优势样式 */
.exclusive {
  background: #ffffff;
}

.exclusive-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 100px;
  max-width: 1200px;
  margin: 0 auto;
  text-align: left;
}

.exclusive-left,
.exclusive-right {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.exclusive-item {
  display: flex;
  align-items: center;
  gap: 15px;
}

.exclusive-item i {
  color: var(--tech-green);
  font-size: 30px;

}

.exclusive-item h4 {
  font-size: 18px;
  color: #222;
  margin-bottom: 8px;
}
    .exclusive-item h4 b{

        font-family:sans-serif;
    }

.exclusive-item p {
  color: #666;
  font-size: 14px;
  line-height: 1.5;
}

/* 系统介绍板块 */
.intro {
  background: #ffffff;
}

.intro-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 100px;
  /* max-width: 1000px;  */
  margin: 0 auto;
  text-align: left;
}

.intro-text h2 {
  font-size: 32px;
  color: #273167;
  margin-bottom: 25px;
}

.intro-text p {
  color: #444;
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.intro-stats {
  display: flex;
  gap: 60px;
  margin-top: 40px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: #515b95;
    margin-bottom: 5px;
}

.stat-label {
  color: #666;
  font-size: 15px;
}

.intro-img-box {
  display: flex;
  justify-content: center;
  align-items: center;
}

.intro-img-box img {
  height: 500px;
}

/* 行业场景 */

.industry-item {
  position: relative;
  overflow: hidden;
  border-radius: 8px;

  height: 220px;
}

.industry-item img {
  vertical-align: top;
  opacity: 1;
  object-fit: cover;
  width: 100%;
  height: 100%;
}

.industry-item p {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background-image: linear-gradient(rgba(0, 0, 0, 0), rgba(0, 0, 0, .1), rgba(0, 0, 0, .7));
  display: flex;
  align-items: flex-end;
  padding: 20px;
  color: #fff;
  text-align: center;
}

.glide {
  max-width: 1440px;
  margin-bottom: 40px;
}

.glide__arrow {
  position: absolute;
  display: block;
  top: 50%;
  z-index: 2;
  color: var(--tech-green);
  text-transform: uppercase;
  padding: 9px 12px;
  background-color: transparent;
  border: none;
  border-radius: 0;
  box-shadow: 0 .25em .5em 0 rgba(0, 0, 0, .1);
  text-shadow: 0 .25em .5em rgba(0, 0, 0, .1);
  opacity: 1;
  cursor: pointer;
  transition: opacity 150ms ease, border 300ms ease-in-out;
  transform: translateY(-50%);
  line-height: 1;
  font-size: 60px;
}

.glide__arrow--left {
  left: .5em;
}

.glide__arrow--right {
  right: .5em;
}


/* 标题区 */
.page-header {
    margin-top: 100px;
    padding: 60px 6%;
    text-align: center;
/*    background: linear-gradient(135deg, #fff 0%, var(--light-green) 100%);*/
}

    .page-header h1 {
        font-size: 42px;
        color: #111;
        margin-bottom: 15px;
    }

        .page-header h1 span {
            color: var(--tech-green);
        }

    .page-header p {
        font-size: 18px;
        color: #666;
        max-width: 700px;
        margin: 0 auto;
    }

/* 内容区 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
}

.about-section {
    margin-bottom: 70px;
}

    .about-section h2 {
        font-size: 28px;
        color: #222;
        margin-bottom: 25px;
        padding-left: 15px;
        border-left: 5px solid var(--tech-green);
    }

    .about-section p {
        font-size: 16px;
        line-height: 1.8;
        color: #1a1a1a;
        margin-bottom: 18px;
    }
    .about-section  .intro-stats {
        gap: 10%;
        justify-content: center;
    }
    .about-section .stat-number {
        color: #222;
    }
    .about-section .mission {
        background: #fff;
        padding: 35px;
        border-radius: 6px;
        box-shadow: var(--shadow);
        margin-top: 20px;
        text-align: center;
        font-style: italic;
    }

    /* 优势卡片 */
    .cards {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 25px;
        margin-top: 30px;
    }
.about-section .cards {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));

}
.about-section .card {
    position: relative;
}
.about-section .cards .card i {
    font-size: 70px;
    color: #d9f7e7;
    opacity: 0.4;
    position: absolute;
    right: 0px;
    bottom: 0px;
    margin-bottom: 0px;
}

    .card {
        background: #fff;
        padding: 35px 25px;
        border-radius: 6px;
        box-shadow: var(--shadow);
    }

        .card i {
            font-size: 32px;
            color: var(--tech-green);
            margin-bottom: 18px;
        }

        .card h3 {
            font-size: 19px;
            margin-bottom: 12px;
        }

            .card h3 b {
                font-family: sans-serif;
            }

        .card p {
            color: #666;
            font-size: 15px;
            line-height: 1.6;
        }
    /* 企业信息 */
    .info-box {
        background: #fff;
        padding: 35px;
        border-radius: 6px;
        box-shadow: var(--shadow);
        margin-top: 20px;
    }

        .info-box p {
            font-size: 16px;
            line-height: 2;
            color: #333;
        }

    .main-container {
        max-width: 1200px;
        margin: 50px auto 80px;
        padding: 0 20px;
        display: grid;
        grid-template-columns: 260px 1fr;
        gap: 35px;
        line-height: 1.8;
    }

        .main-container p {
        }
    /* 左侧侧边栏分类 */
    .sidebar {
        background: var(--white);
        border-radius: 16px;
        box-shadow: var(--shadow);
        padding: 30px 20px;
        position: sticky;
        top: 120px;
        height: fit-content;
    }

        .sidebar h3 {
            font-size: 18px;
            color: #222;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid #eee;
        }

    .cate-list {
        list-style: none;
    }

        .cate-list li {
            margin-bottom: 8px;
        }

        .cate-list a {
            display: block;
            padding: 12px 16px;
            border-radius: 10px;
            text-decoration: none;
            color: #555;
            font-size: 15px;
            transition: 0.3s;
        }

            .cate-list a.active,
            .cate-list a:hover {
                background: var(--light-green);
                color: var(--tech-green);
            }
    /* 右侧文章详情区域 */
    .article-box {
        background: var(--white);
        border-radius: 16px;
        box-shadow: var(--shadow);
        padding: 40px;
    }

    .article-title {
        font-size: 28px;
        color: #222;
        margin-bottom: 30px;
        padding-bottom: 15px;
        border-bottom: 1px solid #eee;
    }

    .article-subtitle {
        font-size: 20px;
        color: #222;
        margin: 35px 0 18px;
        padding-left: 12px;
        border-left: 4px solid var(--tech-green);
    }

    .article-box h3 {
        line-height: 3
    }

    .article-box p {
        font-size: 16px;
        color: var(--gray-text);
        margin-bottom: 16px;
        text-align: justify;
    }
.article-box .video {
    display: flex;
    justify-content: center; 
}

    .tips {
        background: var(--light-gray);
        padding: 18px;
        border-radius: 10px;
        margin: 20px 0;
        border-left: 4px solid var(--tech-green);
    }

        .tips strong {
            color: var(--tech-green);
        }
    /* 底部 */
    .footer {
        background: #273167;
        /* 深灰黑色背景，匹配参考图 */
        color: #cccccc;
        /* 浅灰色文字 */
        padding: 60px 6% 40px;
        font-size: 14px;
    }

    .footer-container {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        max-width: 1200px;
        margin: 0 auto;
        padding-bottom: 30px;

    }

    .footer-left {
        flex: 1;
    }

        .footer-left h3 {
            font-size: 22px;
            color: #ffffff;
            margin-bottom: 25px;
            font-weight: 600;
        }
.footer .copyright a {
    color: #999;
}

.footer .copyright .lwt {
    display: inline-block;
    width: 14px;
    margin-left: 10px;
    vertical-align: text-bottom;
}
        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 20px;
        }

        .contact-info div {
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .contact-info i {
            color: #ffffff;
            font-size: 16px;
            margin-top: 2px;
        }

    .footer-links {
        margin-bottom: 20px;
    }

        .footer-links a {
            color: #cccccc;
            text-decoration: none;
            margin-right: 20px;
            transition: 0.3s;
        }

            .footer-links a:hover {
                color: var(--tech-green);
            }

    .copyright {
        color: #999;
        line-height: 1.6;
    }

        .copyright a {
            display: inline-block;
            color: #999;
            font-size: 13px;
            padding-top: 10px;
            padding-right: 10px;
            text-decoration: none;
        }

    .footer-right {
        display: flex;
        gap: 40px;
        margin-top: 40px;
    }

    .qrcode-item {
        text-align: center;
    }

        .qrcode-item img {
            width: 120px;
            height: 120px;
            margin-bottom: 8px;
            background: #ffffff;
            padding: 5px;
            border-radius: 8px;
        }

        .qrcode-item p {
            color: #cccccc;
            font-size: 13px;
        }
    /* 响应式 */
    @media (max-width: 992px) {
        .section {
            padding: 70px 10%;
            text-align: center;
        }

        .hero {
            flex-direction: column;
            text-align: center;
            height: auto;
            padding: 60px 20px;
        }

            .hero h1 {
                font-size: 36px;
            }

        .hero-img {
            width: 100%;
            margin-top: 40px;
        }

        .intro-container {
            grid-template-columns: 1fr;
            gap: 40px;
            text-align: center;
        }

        .intro-stats {
            justify-content: center;
        }

        .func-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        /* .industry-grid {
    grid-template-columns: repeat(2, 1fr);
  } */
        .exclusive-grid {
            grid-template-columns: 1fr;
            gap: 40px;
        }

        .main-container {
            grid-template-columns: 1fr;
        }

        .sidebar {
            position: static;
        }

        .article-box {
            padding: 25px;
        }

        .footer-container {
            flex-direction: column;
            gap: 40px;
        }

        .footer-right {
            justify-content: center;
            margin-top: 0;
        }
    }

    @media (max-width: 768px) {
        .section {
            padding: 50px 6%;
            text-align: center;
        }
        .navbar {
            padding: 18px 6%;
        }
        .nav-menu {
            position: fixed;
            left: -100%;
            top: 70px;
            flex-direction: column;
            background-color: white;
            width: 100%;
            text-align: center;
            transition: 0.3s;
            box-shadow: var(--shadow);
            padding: 20px 0;
            gap: 20px;
        }

            .nav-menu.active {
                left: 0;
            }

        .menu-toggle {
            display: block;
        }

        .page-header h1 {
            font-size: 32px;
        }

        .btn {
            display: none;
        }

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

        .intro-img-box img {
            height: 310px;
        }

        .intro-stats, .about-section .intro-stats {
            flex-direction: column;
            gap: 20px;
        }

        .glide {
            margin-bottom: 0px;
        }

        .footer-container {
            align-items: center;
        }
    }