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

        :root {
            --primary: #2E7D6B;
            --primary-light: #74B9A7;
            --primary-bg: #F0F7F4;
            --accent: #D4A853;
            --text-main: #2C3E50;
            --text-sub: #6B7C85;
            --text-light: #99A3A8;
            --border: #E8EEEC;
            --shadow-sm: 0 2px 12px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
            --radius-sm: 0px;
            --radius-md: 0px;
            --radius-lg: 14px;
        }

        body {
            background-color: #F5F7F6;
            color: var(--text-main);
            line-height: 1.7;
            font-size: 15px;
        }
        a{
            text-decoration: none;
            color: unset;
        }
        .container {
            width: 1560px;
            max-width: 100%;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 通用板块标题 */
        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-bg);
        }

        .section-head h3 {
            font-size: 22px;
            color: var(--primary);
            font-weight: 600;
            position: relative;
            padding-left: 14px;
        }

        .section-head h3::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 20px;
            background: var(--accent);
            border-radius: 0px;
        }

        .section-head .more {
            color: var(--text-sub);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

        .section-head .more:hover {
            color: var(--primary);
        }

        .section-head .tabs {
            display: flex;
            gap: 24px;
        }

        .section-head .tabs span {
            cursor: pointer;
            font-size: 15px;
            color: var(--text-sub);
            padding-bottom: 12px;
            border-bottom: 2px solid transparent;
            transition: all 0.3s;
        }

        .section-head .tabs span.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 500;
        }

        /* 顶部导航 */
        .top-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 68px;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-sm);
            z-index: 999;
            transition: all 0.3s ease;
        }

        .nav-wrap {
            height: 68px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-list {
            display: flex;
            list-style: none;
            gap: 32px;
        }

        .nav-list li a {
            text-decoration: none;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 500;
            transition: color 0.3s;
        }

        .nav-list li a:hover {
            color: var(--primary);
        }

        .nav-cta {
            padding: 7px 20px;
            background: var(--primary);
            color: #fff;
            border-radius: 0px;
            text-decoration: none;
            font-size: 13px;
            transition: all 0.3s;
        }

        .nav-cta:hover {
            background: #246355;
        }

        .mobile-menu-btn {
            display: none;
            font-size: 22px;
            cursor: pointer;
        }
        /* 下拉菜单基础 */
.nav-list > li {
    position: relative;
}

.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 160px;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    margin-top: 8px;
}

.nav-list > li:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    margin-top: 0;
}

.nav-dropdown li {
    list-style: none;
}

.nav-dropdown li a {
    display: block;
    padding: 10px 18px;
    font-size: 14px;
    color: var(--text-main);
    text-decoration: none;
    transition: all 0.3s;
    white-space: nowrap;
}

.nav-dropdown li a:hover {
    color: var(--primary);
    background: var(--primary-bg);
}

/* 移动端菜单遮罩 */
.mobile-menu-mask {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 998;
}

.mobile-menu-mask.active {
    display: block;
}

/* 移动端侧边菜单 */
.mobile-menu-panel {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 320px;
    height: 100%;
    background: #fff;
    z-index: 999;
    transition: right 0.3s ease;
    overflow-y: auto;
    padding: 20px;
}

.mobile-menu-panel.active {
    right: 0;
}

.mobile-menu-close {
    text-align: right;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-main);
    margin-bottom: 20px;
}

.mobile-nav-list {
    list-style: none;
}

.mobile-nav-list > li {
    border-bottom: 1px solid var(--border);
}

.mobile-nav-list > li > a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    color: var(--text-main);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
}

.mobile-dropdown-toggle {
    font-size: 14px;
    color: var(--text-sub);
    transition: transform 0.3s;
}

.mobile-dropdown-toggle.open {
    transform: rotate(180deg);
}

.mobile-dropdown {
    display: none;
    list-style: none;
    padding-left: 16px;
    padding-bottom: 10px;
}

.mobile-dropdown.open {
    display: block;
}

.mobile-dropdown li a {
    display: block;
    padding: 8px 0;
    color: var(--text-sub);
    text-decoration: none;
    font-size: 14px;
}

.mobile-cta {
    margin-top: 24px;
    display: block;
    width: 100%;
    text-align: center;
    padding: 12px 0;
    background: var(--primary);
    color: #fff;
    border-radius: 0px;
    text-decoration: none;
    font-size: 15px;
}

@media (min-width: 961px) {
    .mobile-menu-btn,
    .mobile-menu-mask,
    .mobile-menu-panel {
        display: none !important;
    }
}
        @media (max-width: 960px) {
            .nav-list, .nav-cta { display: none; }
            .mobile-menu-btn { display: block; }
        }

    

        /* 通用板块间距 */
        .section {
            padding: 50px 0;
        }

        /* 通栏横幅广告位（板块间插入） */
        .banner-ad-horizontal {
            width: 100%;
            height: 150px;
            overflow: hidden;
            position: relative;
            margin: 30px 0;
            box-shadow: var(--shadow-sm);
        }

        .banner-ad-horizontal img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .banner-ad-horizontal .ad-label {
            position: absolute;
            top: 8px;
            right: 10px;
            background: rgba(0,0,0,0.5);
            color: #fff;
            font-size: 11px;
            padding: 2px 8px;
            border-radius: 0px;
        }

        @media (max-width: 768px) {
            .banner-ad-horizontal { height: 70px; }
        }

    

        /* 页面主体 */
        .page-main {
            margin-top: 68px;
            padding: 30px 0 50px;
        }

        /* 顶部通栏广告位 */
        .top-banner-ad {
            width: 100%;
            height: 100px;
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
        }

        .top-banner-ad img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .top-banner-ad .ad-label {
            position: absolute;
            top: 8px;
            right: 10px;
            background: rgba(0,0,0,0.5);
            color: #fff;
            font-size: 11px;
            padding: 2px 8px;
            border-radius: 0px;
        }

        @media (max-width: 768px) {
            .top-banner-ad { height: 70px; }
        }

        /* 面包屑 */
        .breadcrumb {
            margin-bottom: 20px;
            font-size: 14px;
            color: var(--text-sub);
        }

        .breadcrumb a {
            color: var(--text-sub);
            text-decoration: none;
            transition: color 0.3s;
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb span {
            margin: 0 8px;
            color: var(--text-light);
        }
          /* 底部通栏广告位 */
        .bottom-banner-ad {
            width: 100%;
            height: 120px;
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
            margin: 40px 0;
            box-shadow: var(--shadow-sm);
        }

        .bottom-banner-ad img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .bottom-banner-ad .ad-label {
            position: absolute;
            top: 10px;
            right: 12px;
            background: rgba(0,0,0,0.5);
            color: #fff;
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 0px;
        }

        @media (max-width: 768px) {
            .bottom-banner-ad { height: 80px; }
        }


        /* 页脚 */
        footer {
            background: #1F3B34;
            color: #fff;
            padding: 50px 0 20px;
            margin-top: 30px;
        }

        .footer-wrap {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 30px;
        }

        .footer-col h4 {
            font-size: 16px;
            margin-bottom: 18px;
            color: #fff;
        }

        .footer-col p {
            color: rgba(255,255,255,0.7);
            font-size: 13px;
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col li {
            margin-bottom: 8px;
        }

        .footer-col li a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            font-size: 13px;
            transition: color 0.3s;
        }

        .footer-col li a:hover {
            color: var(--primary-light);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: rgba(255,255,255,0.5);
            font-size: 12px;
        }

        @media (max-width: 900px) {
            .footer-wrap { grid-template-columns: 1fr 1fr; }
        }