/* ============================================================
   惠州茂沁绿化草业有限公司 - 全局样式表
   版本：1.0
   说明：本文件包含网站所有自定义样式，所有动态效果仅用CSS实现
   所有V4版新增样式已集中到此文件，并添加详细注释
   ============================================================ */

/* ==================== 1. 全局变量与基础样式 ==================== */
/* 定义CSS变量（设计令牌），便于全局统一修改颜色、阴影、过渡等 */
:root {
    --primary-color: #2E7D32;       /* 主色调：深绿色，用于导航栏、标题、按钮主色 */
    --primary-light: #4CAF50;       /* 主色调亮色：用于悬停状态、辅助元素 */
    --primary-dark: #1B5E20;        /* 主色调暗色：用于文字、深色背景 */
    --accent-color: #9fd146;        /* 强调色：浅绿色，用于CTA按钮、重要标识 */
    --accent-light: #a8ff76;        /* 强调色亮色：用于悬停效果 */
    --bg-light: #F1F8E9;            /* 浅绿背景：用于模块背景 */
    --bg-white: #FFFFFF;            /* 白色背景 */
    --text-dark: #1a1a2e;           /* 深色文字 */
    --text-muted: #6c757d;          /* 灰色文字 */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);     /* 小阴影 */
    --shadow-md: 0 5px 20px rgba(0,0,0,0.12);    /* 中阴影 */
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);   /* 大阴影 */
    --transition-base: all 0.3s ease;             /* 基础过渡动画 */
    --transition-slow: all 0.5s ease;             /* 慢速过渡动画 */
}

/* 全局重置：清除默认边距和内边距，设置盒模型 */
* { margin: 0; padding: 0; box-sizing: border-box; }

/* 基础body样式：字体族、文字颜色、水平溢出隐藏、白色背景 */
body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', sans-serif;
    color: var(--text-dark);
    overflow-x: hidden;
    background-color: var(--bg-white);
    padding-top: 0; /* 移除body padding，由hero-section的margin-top补偿固定导航栏高度 */
}

/* 卡片链接包装器：使整个卡片区域可点击，保持链接颜色不变 */
.card-link-wrapper { display: block; color: inherit; text-decoration: none; height: 100%; }
.card-link-wrapper:hover { color: inherit; }

/* 模块标题链接样式：使模块标题（h2）可点击，保留原有视觉样式 */
.section-title-link { display: inline-block; color: inherit; text-decoration: none; transition: var(--transition-base); }
.section-title-link:hover { color: inherit; opacity: 0.85; }

/* ==================== 2+3. 合并导航栏（Combined Nav） ==================== */
/* V4版：顶部信息栏与主导航合并为一个模块，白色背景 */
/* 左侧：LOGO图标（仅图标，无文字），中间：导航菜单，右侧：联系电话按钮 */
.combined-nav {
    background: #fff;                /* 白色背景，与页面内容融合 */
    padding: 6px 0;                 /* 上下内边距6px */
    position: fixed;                /* 固定定位，始终在页面顶部 */
    top: 0; left: 0; right: 0;     /* 左右撑满全屏 */
    z-index: 1030;                  /* 高层级，覆盖其他元素 */
    transition: var(--transition-base);
    box-shadow: var(--shadow-md);   /* 底部阴影，与页面内容区分 */
}
.combined-nav .container {
    display: flex;                  /* 弹性布局，三栏水平排列 */
    align-items: center;
    justify-content: space-between; /* 左右对齐：LOGO在左，电话在右 */
}
.combined-nav .nav-logo {
    flex-shrink: 0;                  /* 不压缩 */
    display: flex; align-items: center;
    height: 100%; padding: 2px 0;
}
.combined-nav .nav-logo .logo-icon {
    height: 100%; width: auto; max-height: 90px;
    object-fit: contain; border-radius: 4px;
    transition: var(--transition-base);
}
.combined-nav .nav-logo .logo-icon:hover { transform: scale(1.08); }

/* 导航菜单：水平排列，中间居中 */
.combined-nav .nav-menu {
    display: flex; align-items: center; gap: 2px;
    flex-wrap: wrap; justify-content: center;
}
.combined-nav .nav-menu .nav-item { list-style: none; }
.combined-nav .nav-menu .nav-link {
    color: var(--primary-color) !important;  /* 默认深绿色文字 */
    font-weight: 600; padding: 10px 14px !important;
    font-size: 0.95rem; border-radius: 8px;
    transition: var(--transition-base);
    text-decoration: none; display: inline-block; position: relative;
}
/* 导航链接悬停下划线动画：从中间向左右展开 */
.combined-nav .nav-menu .nav-link::after {
    content: ''; position: absolute; bottom: 4px; left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 50%; height: 2px;
    background: var(--accent-color); border-radius: 2px;
    transition: transform 0.3s ease;
}
.combined-nav .nav-menu .nav-link:hover::after { transform: translateX(-50%) scaleX(1); }
/* 悬停时：深绿色背景+白色文字 */
.combined-nav .nav-menu .nav-link:hover { color: #fff !important; background: var(--primary-color); }
/* 激活状态：深绿色背景+白色文字 */
.combined-nav .nav-menu .nav-link.active { color: #fff !important; font-weight: 700; background: var(--primary-color); }
.combined-nav .nav-menu .nav-link.active::after { transform: translateX(-50%) scaleX(1); }

/* 右侧联系电话按钮：金色渐变 */
.combined-nav .nav-phone { flex-shrink: 0; }
.combined-nav .nav-phone .cta-phone {
    background: linear-gradient(135deg, var(--accent-color) 0%, #FFC107 100%);
    color: var(--primary-dark) !important; font-weight: 700;
    border-radius: 25px; padding: 7px 18px; font-size: 0.9rem;
    transition: var(--transition-base);
    border: 2px solid var(--accent-color); text-decoration: none;
    display: inline-flex; align-items: center; gap: 6px; white-space: nowrap;
}
.combined-nav .nav-phone .cta-phone:hover {
    transform: scale(1.08);
    box-shadow: 0 5px 25px rgba(255,214,0,0.5);
    background: linear-gradient(135deg, #FFC107 0%, var(--accent-color) 100%);
}
/* 电话图标抖动动画：吸引用户注意 */
.combined-nav .nav-phone .cta-phone i { animation: phoneShake 2s ease-in-out infinite; }
@keyframes phoneShake { 0%, 100% { transform: rotate(0deg); } 25% { transform: rotate(15deg); } 75% { transform: rotate(-15deg); } }

/* 移动端汉堡菜单按钮：默认隐藏（桌面端不可见） */
.combined-nav .nav-toggler {
    display: none;                   /* 桌面端隐藏 */
    background: transparent;
    border: 1px solid rgba(255,255,255,0.3); border-radius: 8px;
    padding: 8px 12px; cursor: pointer;
    color: #fff; font-size: 1.2rem; transition: var(--transition-base);
}
.combined-nav .nav-toggler:hover { background: rgba(255,255,255,0.1); }

/* ==================== 4. 英雄区轮播（Hero Carousel） ==================== */
/* 纯CSS轮播：使用@keyframes动画实现6张图片自动切换 */
/* 轮播从右往左推入效果，每张4.5秒，总时长27秒 */
.hero-section {
    position: relative; height: 85vh; min-height: 500px;
    overflow: hidden; margin-top: 62px; /* 补偿固定导航栏高度（~58px + 间距） */
}
.carousel-css { position: relative; width: 100%; height: 100%; }

/* 轮播图片容器：默认透明，通过animation控制显示 */
.carousel-slide {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    opacity: 0; animation: carouselAnimation 27s infinite;
}
/* 6张图的延迟时间：依次延迟4.5秒 */
.carousel-slide:nth-child(1) { animation-delay: 0s; }
.carousel-slide:nth-child(2) { animation-delay: 4.5s; }
.carousel-slide:nth-child(3) { animation-delay: 9s; }
.carousel-slide:nth-child(4) { animation-delay: 13.5s; }
.carousel-slide:nth-child(5) { animation-delay: 18s; }
.carousel-slide:nth-child(6) { animation-delay: 22.5s; }
.carousel-slide img { width: 100%; height: 100%; object-fit: cover; }

/* 轮播遮罩层：半透明深绿色渐变，让文字更清晰 */
.carousel-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(27,94,32,0.7) 0%, rgba(46,125,50,0.5) 50%, rgba(0,0,0,0.3) 100%);
    z-index: 1;
}
/* 轮播文字内容容器：居中显示 */
.carousel-content {
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%,-50%); z-index: 2;
    text-align: center; width: 90%; max-width: 800px;
}
/* 轮播主标题：白色大号文字，淡入上升动画 */
.carousel-title {
    font-size: 3.2rem; font-weight: 800; color: #fff;
    margin-bottom: 1rem; text-shadow: 2px 2px 10px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease forwards; opacity: 0;
}
.carousel-subtitle {
    font-size: 1.3rem; color: rgba(255,255,255,0.95);
    margin-bottom: 2rem; text-shadow: 1px 1px 5px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease 0.3s forwards; opacity: 0;
}
.carousel-buttons {
    display: flex; gap: 20px; justify-content: center; flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.6s forwards; opacity: 0;
}

/* 英雄区行动按钮样式 */
.btn-hero {
    padding: 14px 35px; border-radius: 30px; font-weight: 700;
    font-size: 1.05rem; transition: var(--transition-base);
    text-decoration: none; display: inline-flex; align-items: center; gap: 10px;
}
.btn-hero-primary { background: linear-gradient(135deg, var(--accent-color) 0%, #FFC107 100%); color: var(--primary-dark); border: 2px solid var(--accent-color); }
.btn-hero-primary:hover { transform: translateY(-3px) scale(1.03); box-shadow: 0 10px 30px rgba(255,214,0,0.4); color: var(--primary-dark); }
.btn-hero-secondary { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.8); }
.btn-hero-secondary:hover { background: rgba(255,255,255,0.15); transform: translateY(-3px) scale(1.03); color: #fff; border-color: #fff; }

/* 轮播关键帧：从右往左推入 + 缩放淡入淡出 */
@keyframes carouselAnimation {
    0% { opacity: 0; transform: translateX(100px) scale(0.98); }
    5% { opacity: 1; transform: translateX(0) scale(1); }
    30% { opacity: 1; transform: translateX(0) scale(1); }
    38% { opacity: 0; transform: translateX(-100px) scale(0.98); }
    100% { opacity: 0; transform: translateX(-100px) scale(0.98); }
}
/* 文字淡入上升动画 */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

/* 品质保证浮动卡片：位于轮播底部，毛玻璃效果 */
.hero-features { position: absolute; bottom: 80px; left: 0; right: 0; z-index: 3; }
.hero-feature-item {
    background: rgba(255,255,255,0); backdrop-filter: blur(1px);
    border: 1px solid rgba(255,255,255,0); border-radius: 12px;
    padding: 15px 10px; text-align: center; color: #fff;
    transition: var(--transition-base);
    display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.hero-feature-item:hover { background: rgba(255,255,255,0.25); transform: translateY(-5px); box-shadow: 0 8px 25px rgba(0,0,0,0.2); }
.hero-feature-item i { font-size: 1.8rem; color: var(--accent-color); transition: var(--transition-base); }
.hero-feature-item:hover i { transform: scale(1.2); color: #fff; }
.hero-feature-item span { font-size: 0.9rem; font-weight: 600; }

/* 轮播指示器（小圆点）：底部居中，当前图片高亮为绿色 */
.carousel-indicators-css {
    position: absolute; bottom: 30px; left: 50%;
    transform: translateX(-50%); display: flex; gap: 12px; z-index: 3;
}
.carousel-indicators-css span {
    width: 14px; height: 14px; border-radius: 50%;
    background: rgba(255,255,255,0.4); cursor: pointer;
    transition: var(--transition-base); animation: indicatorAnim 27s infinite;
}
.carousel-indicators-css span:nth-child(1) { animation-delay: 0s; }
.carousel-indicators-css span:nth-child(2) { animation-delay: 4.5s; }
.carousel-indicators-css span:nth-child(3) { animation-delay: 9s; }
.carousel-indicators-css span:nth-child(4) { animation-delay: 13.5s; }
.carousel-indicators-css span:nth-child(5) { animation-delay: 18s; }
.carousel-indicators-css span:nth-child(6) { animation-delay: 22.5s; }
@keyframes indicatorAnim { 0%, 15% { background: var(--accent-color); transform: scale(1.2); } 17%, 100% { background: rgba(255,255,255,0.4); transform: scale(1); } }

/* ==================== 5. 通用模块标题 ==================== */
/* 模块标题样式：用于每个内容区域（关于、产品、案例等）的h2标题 */
.section-title {
    font-size: 2.2rem; font-weight: 800; color: var(--primary-dark);
    margin-bottom: 0.5rem; position: relative; display: inline-block;
}
/* 标题装饰线：悬停时从中间向左右展开的绿色线条 */
.section-title::after {
    content: ''; display: block; width: 100%; height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 2px; margin: 10px auto 0;
    transform: scaleX(0); transform-origin: center; /* 从中间展开 */
    transition: transform 0.4s ease;
}
.section-title:hover::after { transform: scaleX(1); }
.section-subtitle { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 3rem; }

/* ==================== 6. 关于我们（About） ==================== */
/* 关于茂沁模块：含视频、简介、荣誉资质、新媒体矩阵 */
#about { padding: 80px 0; background: var(--bg-white); position: relative; overflow: hidden; }
#about::before {
    content: ''; position: absolute; top: -50%; left: -20%;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(46,125,50,0.05) 0%, transparent 70%);
    border-radius: 50%; pointer-events: none; /* 装饰圆，不可点击 */
}
.about-video-wrapper {
    position: relative; border-radius: 15px; overflow: hidden;
    box-shadow: var(--shadow-md); transition: var(--transition-base);
}
.about-video-wrapper:hover { transform: scale(1.02); box-shadow: var(--shadow-lg); }
.about-video-wrapper video { width: 100%; height: 400px; object-fit: cover; transition: var(--transition-slow); }
.about-video-wrapper:hover video { transform: scale(1.1); }

/* 查看更多按钮 */
.btn-more {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--primary-color); color: #fff;
    border-radius: 25px; padding: 12px 28px; font-weight: 600;
    transition: var(--transition-base); text-decoration: none;
}
.btn-more:hover { background: var(--primary-light); transform: translateY(-3px); box-shadow: var(--shadow-md); color: #fff; }

/* 特色卡片：用于展示公司核心优势 */
.feature-card {
    padding: 25px; border-radius: 12px; background: var(--bg-light);
    transition: var(--transition-base); border: 1px solid transparent;
    position: relative; overflow: hidden;
}
.feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.feature-card i { font-size: 2rem; color: var(--primary-color); transition: var(--transition-base); }
.feature-card:hover i { transform: rotateY(180deg); color: var(--accent-color); }

/* 荣誉资质照片卡片：图片+文字说明 */
.honor-card-photo {
    padding: 20px; border-radius: 12px; background: var(--bg-light);
    text-align: center; transition: var(--transition-base);
    border: 1px solid transparent; height: 100%; overflow: hidden;
}
.honor-card-photo:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
.honor-card-photo img { width: 100%; height: 140px; object-fit: cover; border-radius: 8px; margin-bottom: 12px; transition: var(--transition-slow); }
.honor-card-photo:hover img { transform: scale(1.05); }
.honor-card-photo h5 { font-weight: 700; font-size: 0.95rem; color: var(--text-dark); margin-bottom: 4px; }
.honor-card-photo p { color: var(--text-muted); font-size: 0.82rem; margin: 0; }

/* 标题跳动动画：从左往右滑动进入 */
.title-slide { opacity: 0; transform: translateX(-60px); transition: opacity 0.8s ease, transform 0.8s ease; }
.title-slide.visible { opacity: 1; transform: translateX(0); }
.title-slide-1 { transition-delay: 0s; }
.title-slide-2 { transition-delay: 0.2s; }
.title-slide-3 { transition-delay: 0.4s; }
.title-slide-4 { transition-delay: 0.6s; }
.title-slide-5 { transition-delay: 0.8s; }

/* 社交媒体卡片：展示抖音、微信公众号、微信视频号 */
.social-card {
    padding: 25px 20px; border-radius: 12px; background: var(--bg-white);
    text-align: center; transition: var(--transition-base);
    border: 1px solid #e0e0e0; height: 100%;
    box-shadow: var(--shadow-sm); display: flex; flex-direction: column; align-items: center;
}
.social-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
.social-card .social-icon-wrapper {
    width: 60px; height: 60px; line-height: 60px; border-radius: 50%;
    background: var(--bg-light); margin-bottom: 12px;
    transition: var(--transition-base); display: flex; align-items: center; justify-content: center;
}
.social-card .social-icon-wrapper i { font-size: 1.8rem; margin: 0; transition: var(--transition-base); }
.social-icon-tiktok { color: #000; }
.social-icon-wechat { color: #07C160; }
.social-card:hover .social-icon-wrapper { background: var(--primary-color); transform: rotateY(180deg); }
.social-card:hover .social-icon-wrapper i { color: #fff; transform: scale(1.1); }
.social-card h5 { font-weight: 700; font-size: 1.05rem; color: var(--text-dark); margin-bottom: 8px; transition: var(--transition-base); }
.social-card:hover h5 { color: var(--primary-color); }
.social-card .qrcode-wrapper { width: 120px; height: 120px; border-radius: 8px; overflow: hidden; border: 2px solid var(--bg-light); transition: var(--transition-base); flex-shrink: 0; }
.social-card .qrcode-img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition-base); display: block; }
.social-card:hover .qrcode-wrapper { border-color: var(--primary-light); box-shadow: 0 4px 15px rgba(46,125,50,0.2); }
.social-card:hover .qrcode-img { transform: scale(1.05); }

/* 荣誉资质卡片（旧版，带图标） */
.honor-card { padding: 30px 20px; border-radius: 12px; background: var(--bg-light); text-align: center; transition: var(--transition-base); border: 1px solid transparent; height: 100%; }
.honor-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); border-color: var(--accent-color); }
.honor-card i { font-size: 2.5rem; color: var(--accent-color); margin-bottom: 15px; transition: var(--transition-base); }
.honor-card:hover i { transform: rotateY(360deg) scale(1.1); color: var(--primary-color); }
.honor-card h5 { font-weight: 700; font-size: 1rem; color: var(--text-dark); margin-bottom: 8px; }

/* ==================== 7. 产品中心（Products） ==================== */
/* 草皮产品展示卡片：悬停上浮+阴影加深+图片缩放 */
.products-section { padding: 80px 0; background: var(--bg-light); }
.product-card { border-radius: 15px; overflow: hidden; background: var(--bg-white); box-shadow: var(--shadow-sm); transition: var(--transition-base); height: 100%; border: none; }
.product-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); }
.product-card .card-img-top { height: 220px; object-fit: cover; transition: var(--transition-slow); }
.product-card:hover .card-img-top { transform: scale(1.1); }
.product-img-wrapper { overflow: hidden; height: 220px; }
.product-card .card-body { padding: 1.5rem; }
.product-card .card-title { font-weight: 700; color: var(--primary-dark); font-size: 1.15rem; }
.product-card .card-text { color: var(--text-muted); font-size: 0.9rem; }
.product-price { font-size: 1.3rem; font-weight: 800; color: var(--primary-color); }

/* ==================== 8. 工程案例（Cases） ==================== */
/* 案例展示：图片覆盖层+悬停上移 */
.cases-section { padding: 80px 0; background: var(--bg-white); }
.case-card { border-radius: 15px; overflow: hidden; position: relative; box-shadow: var(--shadow-sm); transition: var(--transition-base); height: 100%; }
.case-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.case-card img { width: 100%; height: 280px; object-fit: cover; transition: var(--transition-slow); }
.case-card:hover img { transform: scale(1.1); }
.case-overlay { position: absolute; bottom: 0; left: 0; right: 0; padding: 25px; background: linear-gradient(transparent, rgba(27,94,32,0.9)); color: #fff; transition: var(--transition-base); }
.case-card:hover .case-overlay { padding-bottom: 35px; }
.case-overlay h5 { font-weight: 700; margin-bottom: 5px; }
.case-overlay p { font-size: 0.85rem; opacity: 0.9; margin: 0; }

/* ==================== 9. 地区服务（Regions） ==================== */
/* V4版白色背景+卡片列表样式 */
.regions-section { padding: 80px 0; background: var(--bg-white); position: relative; overflow: hidden; }
.regions-section::before { content: ''; position: absolute; top: -100px; right: -100px; width: 400px; height: 400px; background: rgba(46,125,50,0.03); border-radius: 50%; pointer-events: none; }
.regions-section .section-title { color: var(--primary-dark); }
.regions-section .section-title::after { background: linear-gradient(90deg, var(--primary-color), var(--accent-color)); }
.regions-section .section-subtitle { color: var(--text-muted); }

/* 城市卡片：白色背景+边框，悬停向右平移 */
.city-list-card { background: var(--bg-light); border: 1px solid #e0e0e0; border-radius: 10px; padding: 14px 20px; transition: var(--transition-base); cursor: pointer; }
.city-list-card:hover { background: var(--bg-white); transform: translateX(8px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.city-list-card i { font-size: 1.5rem; color: var(--primary-color); min-width: 32px; transition: var(--transition-base); }
.city-list-card:hover i { color: var(--accent-color); transform: scale(1.1); }
.city-list-card span.name { font-weight: 700; font-size: 1rem; color: var(--text-dark); }
.city-list-card span.tag { background: var(--primary-color); color: #fff; padding: 3px 12px; border-radius: 12px; font-size: 0.75rem; }

/* ==================== 10. 新闻资讯（News） ==================== */
.news-section { padding: 80px 0; background: var(--bg-light); }
.news-card { border-radius: 12px; overflow: hidden; background: var(--bg-white); box-shadow: var(--shadow-sm); transition: var(--transition-base); height: 100%; border: none; }
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.news-card img { height: 200px; object-fit: cover; transition: var(--transition-slow); }
.news-card:hover img { transform: scale(1.1); }
/* 日期标签：白色背景+绿色边框，与卡片背景协调 */
.news-date { display: inline-block; background: #fff; color: var(--primary-color); padding: 4px 12px; border-radius: 15px; font-size: 0.8rem; margin-bottom: 10px; border: 1px solid var(--primary-color); }
.news-card .card-title { font-weight: 700; font-size: 1.05rem; color: var(--text-dark); transition: var(--transition-base); }
.news-card:hover .card-title { color: var(--primary-color); }
.news-card .card-text { color: var(--text-muted); font-size: 0.88rem; }

/* ==================== 11. 行业百科（Wiki） ==================== */
/* 纯CSS手风琴效果：通过hover控制内容展开/收起 */
.wiki-section { padding: 80px 0; background: var(--bg-white); }
.wiki-accordion { border: 1px solid #e0e0e0; border-radius: 12px; margin-bottom: 15px; overflow: hidden; transition: var(--transition-base); }
.wiki-accordion:hover { box-shadow: var(--shadow-sm); border-color: var(--primary-light); }
.wiki-header { padding: 18px 25px; background: var(--bg-light); cursor: pointer; display: flex; align-items: center; justify-content: space-between; transition: var(--transition-base); position: relative; }
.wiki-header:hover { background: #E8F5E9; }
.wiki-header h4 { font-size: 1rem; font-weight: 600; margin: 0; color: var(--text-dark); }
.wiki-header::after { content: '\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; transition: var(--transition-base); color: var(--primary-color); }
.wiki-content { max-height: 0; overflow: hidden; transition: max-height 0.5s ease, padding 0.5s ease; padding: 0 25px; background: var(--bg-white); }
.wiki-accordion:hover .wiki-content { max-height: 300px; padding: 20px 25px; }
.wiki-accordion:hover .wiki-header::after { transform: rotate(180deg); }
.wiki-content p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.8; margin: 0; }

/* ==================== 12. 底部（Footer） ==================== */
/* 深绿色渐变背景，四栏布局 */
.footer { background: linear-gradient(135deg, var(--primary-dark) 0%, #0D3B0F 100%); color: #fff; padding: 60px 0 30px; position: relative; }
/* 顶部装饰线 */
.footer::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--accent-color), var(--primary-light), var(--accent-color)); }
.footer-logo { font-size: 1.5rem; font-weight: 800; display: flex; align-items: center; gap: 10px; }
.footer-logo i { color: var(--accent-color); font-size: 2rem; }

/* 底部标题：柔和亮绿色，悬停时装饰线变宽 */
.footer h4 { font-weight: 700; font-size: 1.1rem; margin-bottom: 1.2rem; position: relative; padding-bottom: 10px; color: #c5e1a5; }
.footer h4::after { content: ''; position: absolute; bottom: 0; left: 0; width: 30px; height: 3px; background: linear-gradient(90deg, var(--accent-color), #aed581); border-radius: 2px; transition: var(--transition-base); }
.footer h4:hover::after { width: 50px; }

/* 底部链接、联系信息文字颜色及悬停效果 */
.footer-link { color: rgba(255,255,255,0.65); text-decoration: none; transition: var(--transition-base); display: block; padding: 5px 0; font-size: 0.9rem; letter-spacing: 0.3px; }
.footer-link:hover { color: #d4ed9a; padding-left: 10px; text-shadow: 0 0 8px rgba(159,209,70,0.3); }
.footer-contact p { color: rgba(255,255,255,0.65); font-size: 0.9rem; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; transition: var(--transition-base); }
.footer-contact p:hover { color: rgba(255,255,255,0.9); transform: translateX(3px); }
.footer-contact i { color: var(--accent-color); width: 20px; text-align: center; }
.footer-phone { color: var(--accent-color) !important; font-size: 1.3rem; font-weight: 700; text-decoration: none; transition: var(--transition-base); }
.footer-phone:hover { color: #fff !important; transform: scale(1.05); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 25px; margin-top: 40px; text-align: center; }
.footer-bottom p { color: rgba(255,255,255,0.5); font-size: 0.85rem; margin: 0; }

/* 底部标题链接样式：使底部标题可点击 */
.footer-title-link { display: inline-block; text-decoration: none; color: inherit; transition: var(--transition-base); }
.footer-title-link:hover { color: var(--accent-color) !important; }

/* 友情链接文字样式 */
.friend-link { color: rgba(255,255,255,0.6); text-decoration: none; font-size: 0.85rem; transition: var(--transition-base); display: inline-block; margin-right: 15px; margin-bottom: 5px; }
.friend-link:hover { color: var(--accent-color); }

/* ==================== 13. 滚动渐入动画 ==================== */
/* 页面滚动时模块依次淡入+上移 */
.scroll-animate { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.scroll-animate.visible { opacity: 1; transform: translateY(0); }

/* ==================== 14. 移动端响应式适配 ==================== */
/* 屏幕宽度小于992px时触发的移动端样式 */
@media (max-width: 991.98px) {
    /* 汉堡菜单按钮显示 */
    .combined-nav .nav-toggler { display: block; background: var(--primary-color); border: none; color: #fff; border-radius: 6px; }
    .combined-nav .nav-toggler:hover { background: var(--primary-light); }
    .combined-nav .container { flex-wrap: wrap; }
    /* 导航菜单默认隐藏，点击汉堡按钮后显示 */
    .combined-nav .nav-menu { display: none; width: 100%; order: 3; margin-top: 8px; background: #fff; border-radius: 10px; padding: 8px; box-shadow: var(--shadow-lg); }
    .combined-nav .nav-menu.show { display: flex; flex-direction: column; }
    .combined-nav .nav-menu .nav-link { width: 100%; text-align: center; padding: 10px !important; }

    /* 轮播和标题调整 */
    .hero-section { margin-top: 54px; height: 60vh; min-height: 400px; }
    .carousel-title { font-size: 1.8rem; }
    .carousel-subtitle { font-size: 0.9rem; }
    .section-title { font-size: 1.8rem; }
    .btn-hero { padding: 10px 20px; font-size: 0.9rem; }
    .about-section, .products-section, .cases-section, .regions-section, .news-section, .wiki-section { padding: 50px 0; }
}