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

/* 核心：全屏无空白 + 自适应 */
html, body {
    width: 100vw !important; /* 强制占满视口宽度 */
    height: 100%;
    overflow-x: hidden !important; /* 禁止横向滚动 */
    overflow-y: auto;
    /*background-color: #f0f5ff;*/
    background-color: #f0f5ff4d;
    /*background: linear-gradient(10deg, #ffffff 30%, #c1e0fd 100%),*/
    /*linear-gradient(180deg, #c1e0fd 10%, transparent 100%);*/
    padding: 0 !important;
    margin: 0 !important;
}

/* 主容器：100%宽度，无内外边距，适配所有屏幕 */
.main-container {
    width: 100vw !important;
    min-height: 100vh;
    padding: 0 !important;
    margin: 0 !important;
}

/*logo及搜索栏：全屏宽度，无空白*/
.logo-search {
    width: 100vw !important;
    background-color: white;
    margin: 0 !important;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-search img {
    padding-left: 2vw; /* 用视口单位实现自适应边距，也可以用固定值如20px */
}

/* 顶部右侧导航+搜索容器 */
.top-right-bar {
    display: flex;
    align-items: center;
    gap: 1.5vw; /* 元素间距，自适应 */
    margin-right: 2vw; /* 右侧边距，避免贴边 */
}

/* 首页链接样式 */
.top-nav-link {
    color: #003366;
    text-decoration: none;
    font-size: clamp(12px, 1.5vw, 14px);
    font-weight: 500;
    transition: color 0.2s;
}

.top-nav-link:hover {
    color: #0070f3;
}

/* 搜索Icon容器样式 */
.search-icon-wrap {
    width: clamp(30px, 4vw, 40px); /* 图标容器大小自适应 */
    height: clamp(30px, 4vw, 40px);
    border-radius: 50%; /* 圆形背景 */
    background-color: #e0ebff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer; /* 鼠标悬浮变手型 */
    transition: all 0.2s ease;
}

.search-icon-wrap:hover {
    background-color: #d0e8ff;
    transform: scale(1.05); /* 悬浮轻微放大 */
}

/* 搜索Icon样式 */
.search-icon {
    color: #003366;
    font-size: clamp(14px, 2vw, 16px); /* 图标大小自适应 */
}

/* 搜索框容器（全屏宽度+居中内容） */
.search-container {
    display: none; /* 保持点击Icon显示/隐藏逻辑 */
    width: 100%;
    padding: 1vw 0; /* 上下内边距，左右无 */
    background-color: white;
    border-bottom: 1px solid #e0ebff;
}

/* 搜索框内容区（限制最大宽度+居中） */
.search-content {
    width: 100%;
    max-width: 1200px; /* 控制搜索框最大长度，可按需调大 */
    margin: 0 auto; /* 水平居中 */
    padding: 0 2vw; /* 左右留白，避免贴边 */
    display: flex;
}

/* 搜索输入框（占满剩余宽度） */
.search-input {
    flex: 1; /* 让输入框自动占满内容区剩余宽度 */
    min-width: 200px;
    padding: clamp(8px, 1.2vw, 12px) clamp(15px, 2vw, 20px);
    border: 1px solid #e0ebff;
    border-radius: 4px 0 0 4px;
    font-size: clamp(12px, 1.5vw, 14px);
    outline: none;
}

.search-input:focus {
    border-color: #0070f3;
}

/* 搜索按钮（固定宽度） */
.search-btn {
    width: clamp(80px, 10vw, 120px); /* 按钮宽度自适应 */
    background-color: #003366;
    color: #fff;
    border: none;
    border-radius: 0 4px 4px 0;
    font-size: clamp(12px, 1.5vw, 14px);
    cursor: pointer;
    transition: background-color 0.2s;
}

.search-btn:hover {
    background-color: #0056cc;
}

.banner-bg-img {
    width: 50%;
    margin-right: 3vw
}

/* 区块容器：全屏宽度，自适应内边距 */
.section-wrap {
    width: 100vw !important;
    padding: 2vw 3vw; /* 随屏幕缩放的内边距 */
    margin: 0 !important;
}

/* 区块样式：自适应宽度，无外侧空白 */
.section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid #e0ebff;
    transition: all 0.3s ease;
}

.section:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

/* 标题样式：响应式字号 */
h1 {
    font-size: clamp(18px, 3vw, 24px); /* 最小18px，最大24px，随屏幕缩放 */
    color: #001e3c;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 1vw;
}

h2 {
    font-size: clamp(16px, 2.5vw, 20px);
    color: #002855;
    font-weight: 600;
    margin: 1.5vw 0 1vw;
    padding-bottom: 0.8vw;
    border-bottom: 1px solid #e0ebff;
}

h3 {
    font-size: clamp(14px, 2vw, 18px);
    color: #003366;
    font-weight: 600;
    margin: 1vw 0 0.8vw;
}

/* 文本样式：响应式字号 */
p, li, span {
    font-size: clamp(12px, 1.8vw, 16px);
    color: #334e68;
    line-height: 1.5;
    margin: 0.5vw 0;
    font-weight: 600;
}

/* 按钮样式：响应式尺寸 */
.btn {
    display: inline-block;
    padding: clamp(6px, 1.2vw, 10px) clamp(12px, 2vw, 18px);
    font-size: clamp(12px, 1.5vw, 14px);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: 6px;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    margin: 1vw 1vw 1vw 0;
}

.header-btn-pilot {
    background-color: #003366;
    color: #fff;
}

.header-btn-pilot:hover {
    background-color: #0066cc;
    transform: scale(1.02);
    box-shadow: 0 2px 8px rgba(0, 112, 243, 0.3);
}

.header-btn-secondary {
    background-color: #016258;
    color: #fff;
}

.header-btn-secondary:hover {
    background-color: #009a25;
    transform: scale(1.02);
    box-shadow: 0 2px 8px rgba(0, 180, 42, 0.3);
}

/*四象限图样式：自适应布局  start*/
/* 象限交叉线 + 箭头样式 */
.card-four-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none; /* 不遮挡卡片点击 */
    z-index: 1; /* 箭头在卡片下方 */
}

/* 垂直中线（含箭头） */
.vertical-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #ff4d4f; /* 红线 */
    transform: translateX(-50%);
}

.vertical-arrow {
    position: absolute;
    top: -10px; /* 超出容器顶部 */
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 12px solid #ff4d4f; /* 箭头颜色与线一致 */
}

/* 水平中线（含箭头） */
.horizontal-line {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background-color: #1890ff; /* 蓝线 */
    transform: translateY(-50%);
}

.horizontal-arrow {
    position: absolute;
    top: 50%;
    right: -10px; /* 超出容器右侧 */
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-left: 12px solid #1890ff; /* 箭头颜色与线一致 */
}

.card-four-quadrants {
    background-color: #e0ebff;
    border-radius: 30px;
    padding: clamp(1.5vw, 3%, 2.5vw); /* 内边距自适应 */
    text-align: center;
    font-size: clamp(14px, 2vw, 18px); /* 字号响应式 */
    color: #003366;
    font-weight: 600;
    /* 固定宽高比，确保卡片正方形/统一大小 */
    aspect-ratio: 1.5/1; /* 宽高比1.5:1，可调整 */
    display: flex;
    align-items: center; /* 垂直居中 */
    justify-content: center; /* 水平居中 */
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.card-four-quadrants:hover {
    background-color: #d0e8ff;
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 112, 243, 0.15);
}

/* 小屏幕适配：象限图转为1列 */
@media (max-width: 768px) {
    .card-four-quadrants {
        aspect-ratio: 3/1; /* 小屏幕宽高比调整为3:1，更修长 */
        font-size: clamp(13px, 2.2vw, 16px);
    }

    /* 小屏隐藏红线和蓝线 */
    .vertical-line, .vertical-arrow, .horizontal-line, .horizontal-arrow {
        display: none;
    }
}

/*四象限图样式：自适应布局  end*/

/* 响应式网格布局：自动适配列数 */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); /* 最小280px，自动换行 */
    gap: 1.5vw;
    margin: 1.5vw 0;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); /* 最小240px，自动换行 */
    gap: 1.2vw;
    margin: 1.5vw 0;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); /* 最小200px，自动换行 */
    gap: 1vw;
    margin: 1.5vw 0;
}

/* 图表模块：自适应宽度 */
.chart-card {
    background-color: #f5faff;
    border-radius: 8px;
    padding: 1.5vw;
    margin: 1.5vw 0;
    text-align: center;
    width: 100%;
}

.chart-card img {
    width: 100%;
    max-width: 100%; /* 禁止超出容器 */
    height: auto;
    border-radius: 8px;
}

/* 转化区：全屏宽度，自适应内边距 */
.convert-area {
    background: linear-gradient(135deg, #00b42a 0%, #009a25 100%);
    color: #fff;
    padding: 1vw;
    border-radius: 12px;
    margin-top: 2vw;
    width: 100%;
}

.convert-area h3 {
    color: #fff;
    margin-bottom: 1.5vw;
}

.convert-area .form-group {
    display: flex;
    flex-wrap: wrap; /* 小屏换行 */
    gap: 1vw;
    margin-bottom: 1.5vw;
    width: 100%;
}

.convert-area input {
    flex: 1;
    min-width: 200px; /* 小屏最小宽度 */
    padding: 1.2vw;
    border: none;
    border-radius: 6px;
    font-size: clamp(12px, 1.5vw, 14px);
    width: 100%;
}

.convert-area .btn {
    background-color: #fff;
    color: #00b42a;
    font-weight: 700;
    width: 100%; /* 小屏按钮全屏 */
    margin: 0;
}

.convert-area .footer-text {
    font-size: clamp(10px, 1.2vw, 12px);
    color: #e6ffe6;
    margin-top: 1.5vw;
}

/* 四象限 start*/
.card-quadrant-section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    opacity: 0; /* 初始透明 */
    transform: translateY(50px); /* 初始向下偏移 */
    transition: opacity 0.6s ease, transform 0.6s ease; /* 过渡动画 */
}

.quadrant-title {
    font-size: clamp(24px, 2.8vw, 32px);
    color: #002b5c;
    font-weight: 600;
    margin-bottom: 3vw;
    position: relative;
    padding-left: 1.5vw;
}

.quadrant-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 80%;
    background: linear-gradient(180deg, #0066cc 0%, #009688 100%);
    border-radius: 2px;
}

/* 四象限容器 - 核心布局 */
.quadrant-container {
    position: relative;
    aspect-ratio: 1.1/1;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 2vw;
    /*padding: 2vw;*/
}

/* 中心标题 */
.center-title {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    background-color: #c1e0fd;
    padding: 1.5vw 2vw;
    border-radius: 100px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 82, 217, 0.08);
}

.center-title h3 {
    font-size: clamp(16px, 2vw, 20px);
    color: var(--primary-color);
    font-weight: 700;
    white-space: nowrap;
}

/* 轴线样式 */
.axis-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* 纵向轴线（原红色） */
.vertical-axis {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 5px;
    background-color: var(--axis-color);
    transform: translateX(-50%);
}

.vertical-arrow {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 12px solid var(--axis-color);
}

/* 横向轴线（原蓝色） */
.horizontal-axis {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 5px;
    background-color: var(--axis-light);
    transform: translateY(-50%);
}

.horizontal-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-left: 12px solid var(--axis-light);
}

/* 象限卡片样式 */
.quadrant-card {
    position: relative;
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 2vw;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
    transition: var(--transition-standard);
    z-index: 2;
}

.quadrant-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 82, 217, 0.08);
    background-color: #e8f0fe;
}

/* 象限标题 */
.quadrant-card h4 {
    font-size: clamp(14px, 1.8vw, 18px);
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 1.2vw;
    padding-bottom: 0.8vw;
    border-bottom: 1px solid rgba(0, 82, 217, 0.2);
    width: 100%;
}

/* 象限列表内容 */
.quadrant-card ul {
    list-style: none;
    width: 100%;
}

.quadrant-card li {
    font-size: clamp(12px, 1.5vw, 15px);
    color: var(--text-medium);
    margin-bottom: 0.8vw;
    line-height: 1.5;
    position: relative;
    padding-left: 1.2vw;
}

.quadrant-card li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 14px;
}

/* 底部总结语 */
.summary-text {
    max-width: 1200px;
    margin: 3vw auto 0;
    text-align: center;
    padding: 1.5vw 2vw;
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
    border: 1px solid var(--primary-light);
}

.summary-text p {
    font-size: clamp(14px, 1.6vw, 16px);
    color: var(--primary-color);
    font-weight: 600;
    line-height: 1.6;
}

/*!* 响应式适配 *!*/
@media (max-width: 768px) {
    .quadrant-container {
        grid-template-columns: 1fr;
        grid-template-rows: repeat(4, auto);
        aspect-ratio: unset;
        gap: 1.5vw;
        padding: 4vw 2vw;
    }

    .axis-lines {
        display: none;
    }

    .center-title {
        position: relative;
        top: 0;
        left: 0;
        transform: none;
        margin-bottom: 2vw;
        grid-column: 1 / -1;
    }

    .quadrant-card {
        padding: 3vw;
    }

    .quadrant-card li {
        padding-left: 2vw;
        margin-bottom: 1.5vw;
    }

    .summary-text {
        margin-top: 5vw;
        padding: 3vw 2vw;
    }

    .convert-area .btn {
        width: auto; /* 大屏按钮自适应 */
    }
}

/*四象限 end*/

/* 痛点 start */
.card-pain-point-section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    opacity: 0; /* 初始透明 */
    transform: translateY(50px); /* 初始向下偏移 */
    transition: opacity 0.6s ease, transform 0.6s ease; /* 过渡动画 */
}

.pain-point-title {
    font-size: clamp(24px, 2.8vw, 32px);
    color: #002b5c;
    font-weight: 600;
    margin-bottom: 3vw;
    position: relative;
    padding-left: 1.5vw;
}

.pain-point-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 80%;
    background: linear-gradient(180deg, #0066cc 0%, #009688 100%);
    border-radius: 2px;
}

.card-pain-point-group {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.pain-point-card {
    background-color: white;
    border-radius: 20px;
    padding: 2.5vw 1.5vw;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
}

.pain-point-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #0066cc 0%, #009688 100%);
}

.pain-point-card-icon {
    font-size: clamp(24px, 3vw, 36px);
    color: #0066cc;
    margin-bottom: 1.2vw;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pain-point-card .pain-point-card-icon {
    color: #009688;
}

.pain-point-card-text {
    font-size: clamp(14px, 1.6vw, 17px);
    color: #002b5c;
    font-weight: 500;
}

.pain-point-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(0, 43, 92, 0.1);
}

/* 痛点 end */

/*什么是能碳管理一体化 AI 智能解决方案？  start*/
.card-what-section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    opacity: 0; /* 初始透明 */
    transform: translateY(50px); /* 初始向下偏移 */
    transition: opacity 0.6s ease, transform 0.6s ease; /* 过渡动画 */
}

.what-title {
    font-size: clamp(24px, 2.8vw, 32px);
    color: #002b5c;
    font-weight: 600;
    margin-bottom: 3vw;
    position: relative;
    padding-left: 1.5vw;
}

.what-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 80%;
    background: linear-gradient(180deg, #0066cc 0%, #009688 100%);
    border-radius: 2px;
}

/*什么是能碳管理一体化 AI 智能解决方案？  end*/

/*为什么传统能碳管理方式难以持续？ start*/
.card-why-section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    opacity: 0; /* 初始透明 */
    transform: translateY(50px); /* 初始向下偏移 */
    transition: opacity 0.6s ease, transform 0.6s ease; /* 过渡动画 */
}

.why-title {
    font-size: clamp(24px, 2.8vw, 32px);
    color: #002b5c;
    font-weight: 600;
    margin-bottom: 3vw;
    position: relative;
    padding-left: 1.5vw;
}

.why-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 80%;
    background: linear-gradient(180deg, #0066cc 0%, #009688 100%);
    border-radius: 2px;
}

/*为什么传统能碳管理方式难以持续？ end*/
/* 世通的一体化方案解决了哪些关键问题？ start*/
.card-solved-section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    opacity: 0; /* 初始透明 */
    transform: translateY(50px); /* 初始向下偏移 */
    transition: opacity 0.6s ease, transform 0.6s ease; /* 过渡动画 */
}

.solved-title {
    font-size: clamp(24px, 2.8vw, 32px);
    color: #002b5c;
    font-weight: 600;
    margin-bottom: 3vw;
    position: relative;
    padding-left: 1.5vw;
}

.solved-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 80%;
    background: linear-gradient(180deg, #0066cc 0%, #009688 100%);
    border-radius: 2px;
}

/* 世通的一体化方案解决了哪些关键问题？ end*/
/* 能碳管理一体化，到底“一体化”在哪里？ start*/
.card-integration-section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    opacity: 0; /* 初始透明 */
    transform: translateY(50px); /* 初始向下偏移 */
    transition: opacity 0.6s ease, transform 0.6s ease; /* 过渡动画 */
}

.integration-title {
    font-size: clamp(24px, 2.8vw, 32px);
    color: #002b5c;
    font-weight: 600;
    margin-bottom: 3vw;
    position: relative;
    padding-left: 1.5vw;
}

.integration-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 80%;
    background: linear-gradient(180deg, #0066cc 0%, #009688 100%);
    border-radius: 2px;
}

/* 一体化链路图示 start */
.integration-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin: 50px 0;
    gap: 20px;
}

.link-item {
    flex: 1;
    min-width: 120px;
    text-align: center;
    padding: 20px 15px;
    background-color: var(--secondary-color);
    border-radius: 12px;
    transition: var(--transition-standard);
    border: 1px solid rgba(0, 102, 204, 0.1);
}

.link-item:hover {
    background-color: #e6f0ff;
}

.link-item i {
    font-size: 20px;
    color: var(--primary-color);
    margin-bottom: 8px;
    margin-top: 25px;
}

.link-item p {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0;
}

.link-arrow {
    color: var(--primary-color);
    font-size: 38px;
    font-weight: bold;
    margin: 0 10px;
    opacity: 0.5;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.1);
    }
    100% {
        opacity: 0.5;
        transform: scale(1);
    }
}

/* 能碳管理一体化，到底“一体化”在哪里？ end*/

/* 客户为什么离不开这一体化？ start*/
.card-compare-section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    opacity: 0; /* 初始透明 */
    transform: translateY(50px); /* 初始向下偏移 */
    transition: opacity 0.6s ease, transform 0.6s ease; /* 过渡动画 */
}

.compare-title {
    font-size: clamp(24px, 2.8vw, 32px);
    color: #002b5c;
    font-weight: 600;
    margin-bottom: 3vw;
    position: relative;
    padding-left: 1.5vw;
}

.compare-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 80%;
    background: linear-gradient(180deg, #0066cc 0%, #009688 100%);
    border-radius: 2px;
}

.compare-card .pain-point-card-icon {
    color: #009688;
}

/* --- 对比表格 --- */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.comparison-table th, .comparison-table td {
    padding: 18px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    background-color: var(--background-color);
    font-weight: 600;
    color: var(--text-dark);
}

.comparison-table .vs {
    text-align: center;
    color: var(--primary-color);
    font-weight: bold;
    background-color: var(--secondary-color);
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.comparison-table td i {
    margin-right: 8px;
    font-size: 14px;
}

.comparison-table .icon-bad {
    color: #dc3545;
}

.comparison-table .icon-good {
    color: var(--accent-color);
}

/* 客户为什么离不开这一体化？ end*/
/* 如何通过8周试点验证 start*/
.card-pilot-section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    opacity: 0; /* 初始透明 */
    transform: translateY(50px); /* 初始向下偏移 */
    transition: opacity 0.6s ease, transform 0.6s ease; /* 过渡动画 */
}

.pilot-title {
    font-size: clamp(24px, 2.8vw, 32px);
    color: #002b5c;
    font-weight: 600;
    margin-bottom: 3vw;
    position: relative;
    padding-left: 1.5vw;
}

.pilot-title span {
    font-size: clamp(24px, 2.8vw, 32px);
}

.pilot-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 80%;
    background: linear-gradient(180deg, #0066cc 0%, #009688 100%);
    border-radius: 2px;
}

.pilot-path {
    margin: 40px 0;
    counter-reset: step;
}

.path-item {
    margin-bottom: 25px;
    padding-left: 40px;
    position: relative;
}

.path-item:last-child {
    margin-bottom: 0;
}

.path-item::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--primary-color);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.2);
}

.path-item::after {
    content: '';
    position: absolute;
    left: 14px;
    top: 30px;
    width: 2px;
    height: calc(100% + 25px);
    background-color: var(--border-color);
}

.pilot-path .path-item:last-child::after {
    display: none;
}

/* 如何通过8周试点验证 end*/

/* 能碳管理一体化带来的成果(四类成果) start*/
.card-achievement-section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    opacity: 0; /* 初始透明 */
    transform: translateY(50px); /* 初始向下偏移 */
    transition: opacity 0.6s ease, transform 0.6s ease; /* 过渡动画 */
}

.achievement-title {
    font-size: clamp(24px, 2.8vw, 32px);
    color: #002b5c;
    font-weight: 600;
    margin-bottom: 3vw;
    position: relative;
    padding-left: 1.5vw;
}

.achievement-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 80%;
    background: linear-gradient(180deg, #0066cc 0%, #009688 100%);
    border-radius: 2px;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin: 40px 0;
}

.result-item {
    padding: 30px;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition-standard);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.result-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: var(--primary-gradient);
}

.result-item:hover {
    box-shadow: var(--card-shadow-hover);
    transform: translateY(-5px);
}

.result-item i {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.result-item h3 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 600;
}

.result-item p {
    margin-top: auto; /* 推到底部 */
}

.card-achievement-group {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* 能碳管理一体化带来的成果？ end*/

/* 哪些企业适合采用该解决方案？(企业类型标签)start*/
.card-enterprise-section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    opacity: 0; /* 初始透明 */
    transform: translateY(50px); /* 初始向下偏移 */
    transition: opacity 0.6s ease, transform 0.6s ease; /* 过渡动画 */
}

.enterprise-title {
    font-size: clamp(24px, 2.8vw, 32px);
    color: #002b5c;
    font-weight: 600;
    margin-bottom: 3vw;
    position: relative;
    padding-left: 1.5vw;
}

.enterprise-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 80%;
    background: linear-gradient(180deg, #0066cc 0%, #009688 100%);
    border-radius: 2px;
}

.enterprise-types {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin: 30px 0;
}

.type-tag {
    padding: 10px 25px;
    background-color: var(--secondary-color);
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition-standard);
    border: 1px solid rgba(0, 102, 204, 0.1);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.type-tag i {
    font-size: 14px;
}

.type-tag:hover {
    background-color: #e6f0ff;
    transform: translateY(-3px);
}

/* 哪些企业适合采用该解决方案？ end*/

/* 世通的独特优势 start*/
.card-difference-section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    opacity: 0; /* 初始透明 */
    transform: translateY(50px); /* 初始向下偏移 */
    transition: opacity 0.6s ease, transform 0.6s ease; /* 过渡动画 */
}

.difference-title {
    font-size: clamp(24px, 2.8vw, 32px);
    color: #002b5c;
    font-weight: 600;
    margin-bottom: 3vw;
    position: relative;
    padding-left: 1.5vw;
}

.difference-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 80%;
    background: linear-gradient(180deg, #0066cc 0%, #009688 100%);
    border-radius: 2px;
}

/* 世通的独特优势 end*/

/* 权威背书  start*/
.card-endorsement-section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    opacity: 0; /* 初始透明 */
    transform: translateY(50px); /* 初始向下偏移 */
    transition: opacity 0.6s ease, transform 0.6s ease; /* 过渡动画 */
}

.endorsement-title {
    font-size: clamp(24px, 2.8vw, 32px);
    color: #002b5c;
    font-weight: 600;
    margin-bottom: 3vw;
    position: relative;
    padding-left: 1.5vw;
}

.endorsement-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 80%;
    background: linear-gradient(180deg, #0066cc 0%, #009688 100%);
    border-radius: 2px;
}

.endorsement {
    margin: 40px 0;
    padding: 30px;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition-standard);
    text-align: center;
}

.endorsement:hover {
    box-shadow: var(--card-shadow-hover);
    transform: translateY(-2px);
}

.endorsement h3 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.endorsement p {
    margin-bottom: 10px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.endorsement p i {
    color: var(--accent-color);
}

/* 权威背书  end*/

/* FAQ start*/
.card-faq-section {
    width: 100% !important;
    padding: 1vw;
    /*margin-bottom: 2vw;*/
    opacity: 0; /* 初始透明 */
    transform: translateY(50px); /* 初始向下偏移 */
    transition: opacity 0.6s ease, transform 0.6s ease; /* 过渡动画 */
}

.faq-title {
    font-size: clamp(24px, 2.8vw, 32px);
    color: #002b5c;
    font-weight: 600;
    margin-bottom: 3vw;
    position: relative;
    padding-left: 1.5vw;
}

.faq-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 80%;
    background: linear-gradient(180deg, #0066cc 0%, #009688 100%);
    border-radius: 2px;
}

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

.faq-container {
    margin: 40px 0;
}

.faq-item {
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition-standard);
}

.faq-item:hover {
    box-shadow: var(--card-shadow-hover);
}

.faq-item.active .faq-question {
    background-color: var(--secondary-color);
}

.faq-question {
    padding: 20px 25px;
    background-color: var(--background-color);
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-standard);
}

.faq-question i.faq-icon-q {
    margin-right: 10px;
    color: var(--primary-color);
}

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease, padding 0.5s ease;
    background-color: #fff;
}

.faq-answer.active {
    padding: 20px 25px;
    max-height: 300px; /* 足够容纳答案内容 */
}

.faq-icon {
    transition: transform 0.3s ease;
    color: var(--primary-color);
    font-size: 20px;
}

.faq-icon.active {
    transform: rotate(180deg);
}

/* FAQ end*/

/* 回到顶部按钮 start*/
.back-to-top {
    /* 固定在右下角 */
    position: fixed;
    right: 30px;
    bottom: 30px;
    /* 初始隐藏 */
    display: none;
    /* 按钮样式（可自定义） */
    padding: 10px 15px;
    background: #165dff;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* 鼠标 hover 效果 */
.back-to-top:hover {
    background: #0d47cc;
}

/* 回到顶部按钮 end*/