/* ============================================
   QY Enterprise Template - 轻量企业官网模板
   风格：纯绿生态 / 暖褐托底 / 响应式 / SEO友好
   ============================================ */

/* 思源黑体分片字体用 google-fonts.css 引入，@font-face 定义在该文件中 */

/* ---------- CSS 变量（纯绿暖褐配色，布局/样式保持原始） ---------- */
:root {
    /* ===== 木（主光）：生机勃发，全绿主调 ===== */
    --color-primary: #3E8E41;           /* 草木绿，主色，生机盎然 */
    --color-primary-dark: #2E7D32;      /* 深林绿，悬停与强调 */
    --color-primary-light: #66BB6A;     /* 嫩芽绿，点缀高光 */
    --color-primary-bg: #E8F5E9;        /* 极浅绿，背景余温 */
    --color-primary-soft: #D4ECD4;      /* 柔绿，过渡点缀 */

    /* ===== 木之深浅（辅助木色） ===== */
    --color-wood: #4A8B3A;              /* 副木绿，用于边框或次级元素 */
    --color-wood-light: #6BA857;        /* 浅绿，图标与辅助 */
    --color-wood-deep: #1B5E20;         /* 深根绿，极深底色与数字 */
    --color-wood-bg: #E8F3E2;           /* 浅青绿，呼吸背景 */

    /* ===== 土/承载：全暖色调，无金无水无黑白灰 ===== */
    --color-bg: #FDF9F2;                /* 页面背景：暖象牙白，替代纯白 */
    --color-bg-gray: #F4EEE2;           /* 区块背景：暖浅褐，替代冷灰 */
    --color-bg-dark: #2C2620;           /* 页脚：深暖褐黑，替代纯黑 */
    --color-text: #2C2620;              /* 主文字：深暖褐，替代黑 */
    --color-text-secondary: #6B5D4E;    /* 次要文字：暖灰褐，替代灰 */
    --color-text-light: #8A7D6B;        /* 辅助文字：浅暖褐灰 */
    --color-border: #E6DDD0;            /* 边框：暖浅褐 */
    --color-border-light: #EFE8DC;      /* 浅边框：极浅褐 */
    --color-white: #FCF8F2;             /* 暖象牙白，全局替代纯白 */

    /* ===== 绿意渐变（纯木生发，摒弃火色） ===== */
    --gradient-wood-fire: linear-gradient(135deg, var(--color-wood-deep) 0%, var(--color-wood-light) 100%);
    --gradient-fire-wood: linear-gradient(135deg, var(--color-wood-light) 0%, var(--color-wood-deep) 100%);

    /* ===== 阴影及布局变量（全暖褐与绿影，摒弃黑灰） ===== */
    --shadow-sm: 0 2px 8px rgba(60, 30, 20, 0.06);
    --shadow-md: 0 4px 16px rgba(60, 30, 20, 0.1);
    --shadow-lg: 0 8px 32px rgba(60, 30, 20, 0.12);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s ease;
    --font-family: "Noto Sans SC", "Source Han Sans SC", "Source Han Sans CN", sans-serif;
    --max-width: 1200px;
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-family);
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-primary-dark); }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; border: 0; }
h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.3; color: var(--color-text); }
p { margin-bottom: 1em; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }
.clearfix::after { content: ""; display: table; clear: both; }

/* ---------- 通用容器 ---------- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }
.section { padding: 60px 0; }
.section-gray { background: var(--color-bg-gray); }
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }

/* ---------- 按钮（深浅绿交织） ---------- */
.btn {
    display: inline-block;
    padding: 12px 32px;
    font-size: 15px;
    font-weight: 500;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    line-height: 1.4;
}
/* 深绿底浅绿影 */
.btn-primary { background: var(--color-primary-dark); color: var(--color-white); border-color: var(--color-wood-light); }
.btn-primary:hover { background: var(--color-wood-deep); border-color: var(--color-wood-light); color: var(--color-white); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(74,139,58,0.4); }
/* 浅绿底深绿影 */
.btn-outline { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); box-shadow: 0 4px 16px rgba(46,125,50,0.3); }
/* 深浅绿渐变底 */
.btn-outline-primary { background: var(--gradient-wood-fire); color: var(--color-white); border-color: transparent; }
.btn-outline-primary:hover { opacity: 0.9; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-lg { padding: 16px 48px; font-size: 17px; }

/* ---------- 模块标题（纯绿渐变底线） ---------- */
.section-title { text-align: center; margin-bottom: 50px; }
.section-title h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}
.section-title h2::after {
    content: "";
    display: block;
    width: 50px;
    height: 3px;
    background: linear-gradient(to right, var(--color-primary-dark) 0%, var(--color-wood-light) 100%);
    margin: 16px auto 0;
    border-radius: 2px;
}
.section-title p { font-size: 16px; color: var(--color-text-secondary); max-width: 600px; margin: 0 auto; }

/* ============================================
   顶部通栏
   ============================================ */
.topbar {
    background: var(--color-bg-gray);
    border-bottom: 1px solid var(--color-border-light);
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 36px;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; }
.topbar-left { display: flex; align-items: center; gap: 20px; }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.topbar a:hover { color: var(--color-primary-dark); }
.topbar .divider { color: var(--color-border); }

/* ============================================
   Logo 区
   ============================================ */
.header { padding: 24px 0; background: var(--color-bg-gray); }
.header .container { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 14px; }
.logo img { max-height: 56px; }
.logo-text h1 { font-size: 24px; font-weight: 700; color: var(--color-text); line-height: 1.2; }
.logo-text p { font-size: 13px; color: var(--color-text-light); margin: 4px 0 0; }
.header-contact { text-align: right; }
.header-contact .label { font-size: 13px; color: var(--color-text-secondary); }
.header-contact .phone {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-primary-dark);
    line-height: 1.2;
    letter-spacing: 1px;
}
.header-contact .phone i { margin-right: 6px; font-size: 22px; }

/* ============================================
   主导航
   ============================================ */
.navbar {
    background: var(--color-bg);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--color-border);
}
.nav-list { display: flex; justify-content: center; }
.nav-item { position: relative; }
.nav-link {
    display: block;
    padding: 0 28px;
    line-height: 56px;
    color: var(--color-text);
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}
.nav-link:hover, .nav-item.cut .nav-link {
    background: transparent;
    color: var(--color-primary-dark);
}
.nav-item.cut .nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 6px solid var(--color-wood-light);
}
/* 子导航 */
.nav-sub {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: var(--color-bg);
    box-shadow: var(--shadow-md);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 100;
    border-top: 3px solid var(--color-primary);
}
.nav-item:hover .nav-sub { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-sub a {
    display: block;
    padding: 12px 20px;
    font-size: 14px;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border-light);
}
.nav-sub a:last-child { border-bottom: 0; }
.nav-sub a:hover { background: var(--color-wood-bg); color: var(--color-wood-deep); padding-left: 26px; }

/* 移动端菜单按钮 */
.nav-toggle { display: none; background: none; border: 0; color: var(--color-bg-dark); font-size: 24px; padding: 14px 20px; cursor: pointer; }

/* ============================================
   Banner 大图轮播
   ============================================ */
.banner {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: var(--color-bg-gray);
}
.banner-slider { position: relative; width: 100%; }
.banner-slide {
    position: relative;
    width: 100%;
    display: none;
}
.banner-slide.active { display: block; }
.banner-slide a { display: block; }
.banner-slide img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}
.banner-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(transparent, rgba(42, 38, 32, 0.75));
    padding: 60px 0 40px;
    color: var(--color-white);
}
.banner-caption h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 12px;
    text-shadow: 0 2px 8px rgba(42, 38, 32, 0.3);
}
.banner-caption p {
    font-size: 16px;
    color: rgba(252, 248, 242, 0.9);
    margin-bottom: 20px;
    max-width: 600px;
    text-shadow: 0 1px 4px rgba(42, 38, 32, 0.3);
}
.banner-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}
.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(252, 248, 242, 0.5);
    cursor: pointer;
    transition: var(--transition);
}
.banner-dot.active { background: var(--color-primary); width: 30px; border-radius: 6px; }
.banner-prev, .banner-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(42, 38, 32, 0.4);
    color: var(--color-white);
    border: 2px solid rgba(252, 248, 242, 0.3);
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}
.banner-prev { left: 20px; }
.banner-next { right: 20px; }
.banner-prev:hover, .banner-next:hover { background: var(--color-primary); border-color: var(--color-primary); }

/* ============================================
   Hero 区（绿意光晕交融背景）
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--color-bg-gray) 0%, var(--color-bg) 100%);
    color: var(--color-text);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}
/* 右上角浅绿光晕 */
.hero::before {
    content: "";
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(102,187,106,0.10) 0%, transparent 70%);
    border-radius: 50%;
}
/* 左下角深绿光晕，交融 */
.hero::after {
    content: "";
    position: absolute;
    bottom: -20%;
    left: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(74,139,58,0.10) 0%, transparent 70%);
    border-radius: 50%;
}
.hero .container { position: relative; z-index: 1; text-align: center; }
.hero h1 {
    font-size: 44px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 20px;
    letter-spacing: 2px;
}
.hero p {
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto 36px;
    line-height: 1.8;
}
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ============================================
   核心优势（绿底绿圈，深浅嵌套）
   ============================================ */
.advantages { background: var(--color-white); }
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.advantage-item {
    text-align: center;
    padding: 24px 16px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    border: 1px solid var(--color-border-light);
    background: var(--color-white);
}
.advantage-item:hover { 
    transform: translateY(-4px); 
    box-shadow: var(--shadow-md); 
    border-color: var(--color-primary); 
    background: var(--color-wood-bg);
}
.advantage-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto 12px;
    background: var(--color-primary-bg);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary-dark);
    font-size: 22px;
    transition: var(--transition);
}
.advantage-item:hover .advantage-icon {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-white);
}
.advantage-number {
    font-size: 30px;
    font-weight: 700;
    color: var(--color-wood-deep);
    line-height: 1;
    margin-bottom: 6px;
}
.advantage-number .unit { font-size: 14px; font-weight: 500; margin-left: 2px; }
.advantage-title { font-size: 15px; font-weight: 600; color: var(--color-text); margin-bottom: 4px; }
.advantage-desc { font-size: 12px; color: var(--color-text-secondary); line-height: 1.5; }

/* ============================================
   产品中心
   ============================================ */
.products { background: var(--color-bg-gray); }
.product-tabs {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 40px;
    border-bottom: 2px solid var(--color-border-light);
}
.product-tab {
    padding: 14px 36px;
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}
.product-tab:hover { color: var(--color-primary); }
.product-tab.active { color: var(--color-primary-dark); border-bottom-color: var(--color-primary); font-weight: 600; }
.product-panels { width: 100%; }
.product-tab-panel { width: 100%; }

/* 产品分组展示 */
.product-groups { display: flex; flex-direction: column; gap: 40px; }
.product-group-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-border-light);
}
.product-group-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text);
    position: relative;
    padding-left: 14px;
    margin: 0;
}
.product-group-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 20px;
    background: linear-gradient(to bottom, var(--color-wood-deep) 0%, var(--color-wood-light) 100%);
    border-radius: 2px;
}
.product-group-more {
    font-size: 14px;
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition);
}
.product-group-more:hover { color: var(--color-primary-dark); gap: 8px; }
.product-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.product-card {
    background: var(--color-white);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.product-card:hover { 
    transform: translateY(-4px); 
    box-shadow: 0 8px 24px rgba(46,125,50,0.15);
    border-color: var(--color-primary);
}
.product-card-img {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-wood-bg) 0%, var(--color-primary-bg) 100%);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.product-card-img img {
    width: 140px;
    height: 140px;
    min-width: 140px;
    min-height: 140px;
    object-fit: cover;
    transition: transform 0.4s ease;
    display: block;
    border-radius: 50%;
    box-shadow: 0 4px 16px rgba(60, 30, 20, 0.12);
}
.product-card:hover .product-card-img img { transform: scale(1.08); }
.product-card-body {
    flex: 1;
    min-width: 0;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.product-card-title {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0;
}
.product-card-title a:hover { color: var(--color-primary-dark); }
.product-card-desc { display: none; }
.product-card-meta { display: none; }
.product-card-more { display: none; }
.product-more { text-align: center; margin-top: 40px; }

/* ============================================
   关于我们
   ============================================ */
.about { background: var(--color-white); }
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-content h2 {
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--color-text);
}
.about-content h2 span { color: var(--color-primary-dark); }
.about-content .subtitle {
    font-size: 16px;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    line-height: 1.8;
}
.about-features { margin-top: 28px; }
.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 15px;
    color: var(--color-text);
}
.about-feature i {
    width: 24px;
    height: 24px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
}
.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.about-stat {
    background: var(--color-bg-gray);
    padding: 30px;
    border-radius: var(--radius-md);
    text-align: center;
    border-left: 4px solid var(--color-primary);
    transition: var(--transition);
}
.about-stat:hover {
    border-left-color: var(--color-primary-dark);
    background: var(--color-primary-bg);
}
.about-stat .number {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-primary-dark);
    line-height: 1;
    margin-bottom: 8px;
}
.about-stat .label { font-size: 14px; color: var(--color-text-secondary); }

/* ============================================
   技术参数
   ============================================ */
.techparams { background: var(--color-bg-gray); }
.tech-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.tech-table th {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 16px 20px;
    font-size: 15px;
    font-weight: 600;
    text-align: left;
    border-bottom: 3px solid var(--color-wood-deep);
}
.tech-table td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--color-border-light);
    font-size: 14px;
    color: var(--color-text);
}
.tech-table tr:last-child td { border-bottom: 0; }
.tech-table tr:hover td { background: var(--color-wood-bg); }
.tech-table .param-name { font-weight: 600; color: var(--color-wood-deep); width: 30%; }
.tech-table .param-value { color: var(--color-primary-dark); font-weight: 600; }

/* ============================================
   新闻动态
   ============================================ */
.news { background: var(--color-white); }
.news-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}
.news-col h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.news-col h3 a { font-size: 13px; font-weight: 400; color: var(--color-text-secondary); }
.news-col h3 a:hover { color: var(--color-primary-dark); }
.news-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px dashed var(--color-border-light);
    gap: 16px;
}
.news-list-item:last-child { border-bottom: 0; }
.news-list-item .title {
    flex: 1;
    font-size: 15px;
    color: var(--color-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.news-list-item .title::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
    margin-right: 10px;
    vertical-align: middle;
    transition: var(--transition);
}
.news-list-item .title a:hover { color: var(--color-primary-dark); }
.news-list-item .date {
    flex-shrink: 0;
    font-size: 13px;
    color: var(--color-text-light);
}
.news-list-item:hover .title { color: var(--color-primary-dark); }
.news-list-item:hover .title::before { background: var(--color-primary-dark); }

/* ============================================
   CTA 区
   ============================================ */
.cta {
    background: linear-gradient(to bottom, var(--color-bg-gray), var(--color-bg));
    color: var(--color-text);
    padding: 50px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(to right, var(--color-wood-deep) 0%, var(--color-primary) 50%, var(--color-wood-deep) 100%);
}
.cta h2 { font-size: 28px; color: var(--color-text); margin-bottom: 12px; }
.cta p { font-size: 16px; color: var(--color-text-secondary); margin-bottom: 24px; }
.cta .phone-big {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 20px;
    letter-spacing: 2px;
}

/* ============================================
   页脚
   ============================================ */
.footer { background: var(--color-bg-dark); color: rgba(252, 248, 242, 0.7); padding: 60px 0 0; }
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}
.footer-col h4 {
    color: var(--color-white);
    font-size: 17px;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary);
    display: inline-block;
}
.footer-about p { font-size: 14px; line-height: 1.8; margin-bottom: 16px; }
.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 14px;
}
.footer-contact i { color: var(--color-wood-light); margin-top: 4px; flex-shrink: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: rgba(252, 248, 242, 0.7); }
.footer-links a:hover { color: var(--color-wood-light); padding-left: 6px; }
.footer-qrcode { text-align: center; }
.footer-qrcode img { width: 120px; height: 120px; margin: 0 auto 10px; background: var(--color-white); padding: 6px; border-radius: var(--radius-sm); }
.footer-qrcode p { font-size: 13px; color: rgba(252, 248, 242, 0.7); }
.footer-bottom {
    border-top: 1px solid rgba(252, 248, 242, 0.15);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(252, 248, 242, 0.7);
}
.footer-bottom a { color: rgba(252, 248, 242, 0.7); }
.footer-bottom a:hover { color: var(--color-wood-light); }
.footer-links-inline { display: flex; justify-content: flex-start; gap: 16px; margin-bottom: 8px; flex-wrap: wrap; }

/* ============================================
   内页通用
   ============================================ */
.page-banner {
    background: var(--gradient-wood-fire);
    color: var(--color-white);
    padding: 50px 0;
    text-align: center;
}
.page-banner h1 { font-size: 30px; color: var(--color-white); margin-bottom: 8px; }
.page-banner p { font-size: 15px; color: rgba(252, 248, 242, 0.9); margin: 0; }
.breadcrumb {
    padding: 16px 0;
    font-size: 14px;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border-light);
}
.breadcrumb a:hover { color: var(--color-primary-dark); }
.breadcrumb .separator { margin: 0 8px; color: var(--color-text-light); }
.page-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 30px;
    padding: 40px 0;
}

/* 左侧栏 */
.sidebar { position: sticky; top: 70px; align-self: start; overflow: hidden; }
.sidebar-box {
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    overflow: hidden;
}
.sidebar-title {
    background: var(--color-bg);
    color: var(--color-wood-deep);
    padding: 16px 20px;
    font-size: 17px;
    font-weight: 600;
    border-left: 4px solid var(--color-primary);
    padding-left: 16px;
}
.sidebar-menu li { border-bottom: 1px solid var(--color-border-light); }
.sidebar-menu li:last-child { border-bottom: 0; }
.sidebar-menu a {
    display: block;
    padding: 12px 20px;
    font-size: 14px;
    color: var(--color-text);
    transition: var(--transition);
}
.sidebar-menu a:hover, .sidebar-menu .active a {
    background: var(--color-wood-bg);
    color: var(--color-wood-deep);
    padding-left: 26px;
}
.sidebar-submenu { background: var(--color-wood-bg); }
.sidebar-submenu a { padding-left: 36px; font-size: 13px; color: var(--color-text-secondary); }
.sidebar-contact { padding: 24px 20px; text-align: center; }
.sidebar-contact .phone {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 8px;
}
.sidebar-contact p { font-size: 13px; color: var(--color-text-secondary); margin-bottom: 6px; }

/* 产品分类手风琴 */
.sidebar-product-title {
    background: var(--color-primary-dark);
    color: var(--color-white);
    padding: 18px 20px;
    text-align: center;
}
.sidebar-product-title .cn { display: block; font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.sidebar-product-title .en { display: block; font-size: 12px; opacity: 0.8; letter-spacing: 1px; }
.sidebar-product-menu { list-style: none; margin: 0; padding: 0; }
.product-category { border-bottom: 1px solid var(--color-border-light); }
.product-category:last-child { border-bottom: 0; }
.product-category.active > .category-header { background: var(--color-wood-bg); }
.category-header {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    transition: var(--transition);
}
.category-header:hover { background: var(--color-wood-bg); }
.category-header i { color: var(--color-primary); font-size: 12px; margin-right: 8px; transition: var(--transition); }
.product-category.active > .category-header i { transform: rotate(90deg); }
.category-header a { font-size: 14px; font-weight: 600; color: var(--color-text); flex: 1; }
.category-header a:hover { color: var(--color-primary-dark); }
.category-submenu { list-style: none; margin: 0; padding: 0 0 8px 0; background: var(--color-wood-bg); }
.category-submenu li { padding: 0; }
.category-submenu a {
    display: block;
    padding: 8px 16px 8px 36px;
    font-size: 13px;
    color: var(--color-text-secondary);
    transition: var(--transition);
}
.category-submenu a:hover, .category-submenu .active a {
    color: var(--color-primary-dark);
    padding-left: 42px;
}

/* 分类下产品列表 */
.category-products {
    padding: 4px 0 10px 0;
    background: var(--color-wood-bg);
}
.category-products a {
    display: block;
    padding: 7px 16px 7px 36px;
    font-size: 13px;
    color: var(--color-text-secondary);
    transition: var(--transition);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.category-products a:hover {
    color: var(--color-primary-dark);
    padding-left: 42px;
    background: rgba(62,142,65,0.05);
}

/* 联系电话盒子 */
.sidebar-contact-box { background: var(--color-white); border: 1px solid var(--color-border-light); border-radius: var(--radius-md); overflow: hidden; }
.sidebar-contact-box .sidebar-contact { padding: 24px 20px; text-align: center; }
.contact-phone {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.contact-label { font-size: 13px; color: var(--color-text-secondary); margin-bottom: 4px; }
.contact-time { font-size: 12px; color: var(--color-text-light); margin-bottom: 16px; }
.contact-btn .btn { width: 100%; }

/* 内页产品分组展示 */
.product-groups-inner { display: flex; flex-direction: column; gap: 32px; }
.product-group-inner { margin-bottom: 8px; }
.product-group-header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-border-light);
}
.product-group-title-inner {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
    padding-left: 12px;
    position: relative;
}
.product-group-title-inner::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 18px;
    background: linear-gradient(to bottom, var(--color-wood-deep) 0%, var(--color-wood-light) 100%);
    border-radius: 2px;
}
.product-group-more-inner {
    font-size: 13px;
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition);
}
.product-group-more-inner:hover { color: var(--color-primary-dark); gap: 8px; }
.product-list-inner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* 右侧内容区 */
.main-content { min-width: 0; overflow: hidden; }
.page-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--color-primary);
}
.page-header h1 { font-size: 24px; font-weight: 600; }

/* 产品列表（内页） */
.product-grid-inner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.product-grid-inner .product-card-img {
    height: 170px;
}
.product-grid-inner .product-card-img img {
    width: 120px;
    height: 120px;
    min-width: 120px;
    min-height: 120px;
}

/* 新闻列表（内页） */
.news-list-inner .news-list-item { padding: 18px 0; }
.news-list-inner .news-list-item .title { font-size: 16px; }

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin-top: 40px;
    flex-wrap: wrap;
}
.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    font-size: 14px;
    color: var(--color-text);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.pagination a:hover { color: var(--color-primary-dark); border-color: var(--color-primary); background: var(--color-primary-bg); }
.pagination .current { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }
.pagination .info { color: var(--color-text-secondary); border-color: transparent; background: transparent; }

/* ============================================
   产品详情页
   ============================================ */

/* 头部：左图右文 */
.product-detail-header {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
    align-items: flex-start;
}

/* 左侧图片区 */
.product-gallery {
    flex: 0 0 380px;
    max-width: 380px;
    background: var(--color-wood-bg);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.product-gallery .main-img {
    width: 100%;
    height: 320px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}
.product-thumbs {
    display: flex;
    gap: 10px;
    margin-top: 16px;
    flex-wrap: wrap;
    justify-content: center;
}
.product-thumbs img {
    width: 64px;
    height: 64px;
    object-fit: cover;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}
.product-thumbs img:hover,
.product-thumbs img.active {
    border-color: var(--color-primary);
}
.product-gallery .no-image {
    text-align: center;
    color: var(--color-text-light);
    padding: 60px 20px;
}
.product-gallery .no-image i {
    font-size: 64px;
    opacity: 0.3;
    display: block;
}
.product-gallery .no-image p {
    margin-top: 12px;
}

/* 右侧信息区 */
.product-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}
.product-info h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-wood-deep);
}
.product-info .description {
    font-size: 14px;
    line-height: 1.9;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}
.product-info .description strong {
    color: var(--color-text);
}
.product-info .service {
    font-size: 14px;
    line-height: 1.9;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    padding: 16px 20px;
    background: var(--color-bg-gray);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--color-wood);
}
.product-info .service strong {
    color: var(--color-primary-dark);
}
/* 热线电话：深绿渐变 */
.product-info .hotline {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-wood-deep));
    border-radius: var(--radius-sm);
    color: var(--color-white);
    margin-bottom: 20px;
}
.product-info .hotline .label {
    font-size: 14px;
    opacity: 0.9;
}
.product-info .hotline .number {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: 1px;
}
.product-info .hotline .number i {
    margin-right: 8px;
}
.product-cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}
.product-cta .btn {
    padding: 12px 32px;
    font-size: 15px;
}

/* 产品详情选项卡 */
.product-tabs-detail {
    display: flex;
    border-bottom: 2px solid var(--color-border);
    margin-bottom: 24px;
    gap: 0;
    flex-wrap: wrap;
}
.product-tab-detail {
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: var(--transition);
}
.product-tab-detail:hover {
    color: var(--color-primary);
}
.product-tab-detail.active {
    color: var(--color-primary-dark);
    border-bottom-color: var(--color-primary);
}
.product-tab-content {
    display: none;
    padding: 10px 0;
}
.product-tab-content.active {
    display: block;
}
.product-content-body {
    font-size: 15px;
    line-height: 1.9;
    color: var(--color-text);
}
.product-content-body p {
    margin-bottom: 1em;
}
.product-content-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    margin: 16px 0;
}

/* 上下篇导航 */
.product-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border-light);
    font-size: 14px;
    flex-wrap: wrap;
    gap: 8px;
}
.product-nav a {
    color: var(--color-text-secondary);
}
.product-nav a:hover {
    color: var(--color-primary-dark);
}

/* ============================================
   文章详情
   ============================================ */
.article-detail { background: var(--color-white); padding: 40px; border-radius: var(--radius-sm); border: 1px solid var(--color-border-light); box-shadow: 0 2px 12px rgba(60, 30, 20, 0.06); }
.article-header { text-align: center; margin-bottom: 30px; padding-bottom: 24px; border-bottom: 1px solid var(--color-border-light); }
.article-header h1 { font-size: 28px; margin-bottom: 16px; }
.article-meta { display: flex; justify-content: center; gap: 24px; font-size: 13px; color: var(--color-text-light); }
.article-meta span { display: flex; align-items: center; gap: 4px; }
.article-body { font-size: 16px; line-height: 1.9; color: var(--color-text); }
.article-body p { margin-bottom: 1.2em; }
.article-body img { max-width: 100%; height: auto; border-radius: var(--radius-sm); margin: 16px auto; display: block; }

/* ============================================
   返回顶部
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--color-wood-light);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(74,139,58,0.4);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    border: 0;
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--color-primary-dark); transform: translateY(-4px); }

/* 移动端底部导航 */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-white);
    box-shadow: 0 -2px 10px rgba(60, 30, 20, 0.1);
    z-index: 999;
    padding: 8px 0;
}
.mobile-nav a {
    flex: 1;
    text-align: center;
    font-size: 12px;
    color: var(--color-text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 4px 0;
}
.mobile-nav a i { font-size: 20px; }
.mobile-nav a.active { color: var(--color-primary); }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 992px) {
    .section { padding: 60px 0; }
    .hero { padding: 70px 0; }
    .hero h1 { font-size: 32px; }
    .advantage-grid { grid-template-columns: repeat(2, 1fr); }
    .product-list { grid-template-columns: repeat(2, 1fr); }
    .product-grid-inner { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .news-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
    .page-layout { grid-template-columns: 1fr; }
    .sidebar { position: static; }
    .topbar { display: none; }
    .header-contact { display: none; }

    /* 产品详情响应式 */
    .product-detail-header {
        flex-direction: column;
        gap: 24px;
    }
    .product-gallery {
        flex: none;
        max-width: 100%;
        width: 100%;
    }
    .product-gallery .main-img {
        height: 280px;
    }
    .product-info {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .nav-list {
        display: none;
        flex-direction: column;
        background: var(--color-bg-dark);
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
    }
    .nav-list.show { display: flex; }
    .nav-link { padding: 14px 20px; line-height: 1.4; border-bottom: 1px solid rgba(252, 248, 242, 0.1); color: var(--color-white); }
    .nav-sub { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; background: rgba(42, 38, 32, 0.2); border-top: 2px solid var(--color-primary); }
    .nav-sub a { color: rgba(252, 248, 242, 0.8); border-bottom-color: rgba(252, 248, 242, 0.1); }
    .banner-caption { padding: 30px 0 24px; }
    .banner-caption h2 { font-size: 20px; margin-bottom: 8px; }
    .product-card-img { height: 150px; padding: 12px; }
    .product-card-img img { width: 100px; height: 100px; min-width: 100px; min-height: 100px; }
    .product-card-body { padding: 12px 16px; }
    .product-card-title { font-size: 14px; }
    .product-group-title { font-size: 17px; }
    .product-tab { padding: 12px 20px; font-size: 14px; }
    .banner-caption p { font-size: 13px; margin-bottom: 12px; }
    .banner-caption .btn { padding: 8px 20px; font-size: 13px; }
    .banner-prev, .banner-next { width: 36px; height: 36px; font-size: 14px; }
    .banner-prev { left: 8px; }
    .banner-next { right: 8px; }
    .banner-dots { bottom: 10px; gap: 6px; }
    .banner-dot { width: 8px; height: 8px; }
    .banner-dot.active { width: 20px; }
    .hero h1 { font-size: 26px; }
    .hero p { font-size: 15px; }
    .section-title h2 { font-size: 24px; }
    .product-list { grid-template-columns: 1fr; }
    .product-grid-inner { grid-template-columns: 1fr; }
    .product-list-inner { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr 1fr; }
    .cta .phone-big { font-size: 26px; }
    .mobile-nav { display: flex; }
    body { padding-bottom: 60px; }
    .back-to-top { bottom: 70px; right: 16px; width: 42px; height: 42px; }
    .logo-text h1 { font-size: 18px; }
    .logo img { max-height: 40px; }
    .header { padding: 16px 0; }
    .product-tabs-detail { overflow-x: auto; }
    .product-tab-detail { padding: 10px 18px; white-space: nowrap; }
    .product-detail-header { gap: 16px; }
    .product-gallery { padding: 12px; }
    .product-gallery .main-img { height: 220px; }
    .product-thumbs img { width: 52px; height: 52px; }
    .product-info h1 { font-size: 20px; }
    .product-info .hotline { flex-direction: column; text-align: center; padding: 16px; }
    .product-info .hotline .number { font-size: 22px; }
    .product-tab-detail { padding: 10px 18px; font-size: 14px; }
    .product-cta .btn { padding: 10px 24px; font-size: 14px; flex: 1; text-align: center; }
    .product-nav { flex-direction: column; gap: 6px; font-size: 13px; }
}

@media (max-width: 480px) {
    .advantage-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr; }
    .hero-btns { flex-direction: column; align-items: center; }
    .btn { width: 100%; max-width: 280px; }
    .product-gallery { padding: 10px; }
    .product-gallery .main-img { height: 180px; }
    .product-thumbs img { width: 44px; height: 44px; }
    .product-info .hotline .number { font-size: 18px; }
    .product-tab-detail { padding: 8px 14px; font-size: 13px; }
    .product-cta { flex-direction: column; }
    .product-cta .btn { width: 100%; }
}

/*---------- 应用领域模块新增样式 ----------*/
.field-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap:24px;
}
.field-item {
    background: var(--color-white);
    padding:28px 22px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-top: 3px solid var(--color-wood);
}
.field-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(62,142,65,0.15);
    border-top-color: var(--color-primary);
}
.field-item h4 {
    font-size:18px;
    font-weight:600;
    color:var(--color-wood-deep);
    margin-bottom:14px;
}
.field-item p {
    font-size:14px;
    line-height:1.75;
    color:var(--color-text-secondary);
    margin:0;
}

/* 响应式适配 */
@media(max-width:992px){
    .field-grid {
        grid-template-columns: repeat(2,1fr);
    }
}
@media(max-width:768px){
    .field-grid {
        grid-template-columns: 1fr;
    }
}