/* ========== 鑫佳源再生资源回收 - 企业官网样式表 ========== */
/* 设计风格：简洁、大气、正规、工业风、商务风 */
/* 主色调：深蓝 #0D47A1 → 明亮蓝 #1976D2 → 浅蓝 #42A5F5 */

/* ===== CSS变量 ===== */
:root {
    --primary-dark: #0D47A1;
    --primary: #1976D2;
    --primary-light: #42A5F5;
    --primary-lighter: #E3F2FD;
    --bg-light: #F5F7FA;
    --text-dark: #1a1a2e;
    --text-body: #333;
    --text-muted: #666;
    --text-light: #999;
    --white: #ffffff;
    --border: #e0e0e0;
    --success: #4CAF50;
    --warning: #FF9800;
    --danger: #f44336;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 30px rgba(13,71,161,0.15);
    --transition: all 0.3s ease;
    --max-width: 1200px;
    --header-height: 80px;
}

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-body);
    background: var(--bg-light);
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; border: none; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* ===== 顶部信息栏 ===== */
.top-bar {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: rgba(255,255,255,0.9);
    font-size: 13px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.top-bar-left { display: flex; gap: 20px; align-items: center; }
.top-bar-left span { display: flex; align-items: center; gap: 6px; }
.top-bar-right { display: flex; gap: 15px; align-items: center; }
.top-bar-right a:hover { color: var(--primary-light); }
.top-bar .icon { width: 14px; height: 14px; display: inline-block; vertical-align: middle; }

/* ===== 导航栏 ===== */
.header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}
.header .container { display: flex; justify-content: space-between; align-items: center; height: var(--header-height); }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-text { font-size: 22px; font-weight: 900; color: var(--primary-dark); line-height: 1.3; }
.logo-text small { display: block; font-size: 11px; font-weight: 400; color: var(--text-muted); letter-spacing: 1px; }
.nav { display: flex; align-items: center; gap: 0; }
.nav > li > a {
    display: block;
    padding: 0 18px;
    height: var(--header-height);
    line-height: var(--header-height);
    font-size: 16px;
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
    transition: var(--transition);
}
.nav > li > a:hover, .nav > li.active > a { color: var(--primary); }
.nav > li > a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary-light));
    border-radius: 3px 3px 0 0;
    transition: var(--transition);
}
.nav > li > a:hover::after, .nav > li.active > a::after { width: 60%; }
.nav .has-dropdown { position: relative; }
.nav .dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    min-width: 200px;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
}
.nav .has-dropdown:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.nav .dropdown a { display: block; padding: 12px 20px; font-size: 14px; border-bottom: 1px solid var(--border); }
.nav .dropdown a:last-child { border-bottom: none; }
.nav .dropdown a:hover { background: var(--primary-lighter); color: var(--primary); padding-left: 26px; }

/* 移动端菜单按钮 */
.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.menu-toggle span { width: 26px; height: 3px; background: var(--primary-dark); border-radius: 2px; transition: var(--transition); }
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 7px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -7px); }

/* ===== 轮播Banner ===== */
.banner { position: relative; overflow: hidden; }
.banner-slides { display: flex; transition: transform 0.6s ease; }
.banner-slide {
    min-width: 100%;
    height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.banner-slide::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
}
.banner-slide-1 { background: linear-gradient(135deg, #0D47A1 0%, #1565C0 40%, #1976D2 70%, #42A5F5 100%); }
.banner-slide-2 { background: linear-gradient(135deg, #0A3D91 0%, #11499E 40%, #1668B5 70%, #2196F3 100%); }
.banner-slide-3 { background: linear-gradient(135deg, #0B3D80 0%, #0F4FA3 40%, #1976D2 70%, #64B5F6 100%); }
.banner-slide::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: 1;
}
.banner-content { position: relative; z-index: 2; text-align: center; color: var(--white); padding: 0 20px; }
.banner-content h2 { font-size: 44px; font-weight: 900; margin-bottom: 16px; text-shadow: 0 2px 20px rgba(0,0,0,0.3); letter-spacing: 2px; }
.banner-content p { font-size: 20px; margin-bottom: 28px; opacity: 0.95; }
.banner-content .banner-tags { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 30px; }
.banner-content .banner-tags span {
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    padding: 6px 18px;
    border-radius: 30px;
    font-size: 14px;
    backdrop-filter: blur(10px);
}
.banner-btn {
    display: inline-block;
    background: linear-gradient(135deg, #FF9800, #F57C00);
    color: var(--white);
    padding: 14px 44px;
    border-radius: 30px;
    font-size: 17px;
    font-weight: 700;
    box-shadow: 0 4px 20px rgba(255,152,0,0.4);
    transition: var(--transition);
}
.banner-btn:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(255,152,0,0.5); }

.banner-dots { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); display: flex; gap: 8px; z-index: 3; }
.banner-dots button { width: 12px; height: 12px; border-radius: 50%; background: rgba(255,255,255,0.4); cursor: pointer; transition: var(--transition); }
.banner-dots button.active { background: var(--white); width: 32px; border-radius: 6px; }

/* ===== 通用Section ===== */
.section { padding: 60px 0; }
.section-gray { background: var(--bg-light); }
.section-white { background: var(--white); }
.section-header { text-align: center; margin-bottom: 45px; }
.section-header h2 { font-size: 32px; font-weight: 900; color: var(--text-dark); margin-bottom: 12px; position: relative; display: inline-block; }
.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary-light));
    border-radius: 2px;
}
.section-header p { font-size: 16px; color: var(--text-muted); margin-top: 16px; }

/* ===== 核心业务卡片 ===== */
.business-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.business-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}
.business-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.business-card-img { width: 100%; height: 200px; overflow: hidden; position: relative; }
.business-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.business-card:hover .business-card-img img { transform: scale(1.1); }
.business-card-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(13,71,161,0.6), transparent 50%);
}
.business-card-body { padding: 24px 20px; }
.business-card-body h3 { font-size: 19px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.business-card-body p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.business-card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
}
.business-card-link:hover { gap: 12px; }

/* ===== 公司优势 ===== */
.advantage-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.advantage-item {
    background: var(--white);
    border-radius: var(--radius);
    padding: 36px 24px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--primary);
    position: relative;
    overflow: hidden;
}
.advantage-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.advantage-item::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: radial-gradient(ellipse at bottom, rgba(25,118,210,0.08), transparent 70%);
    pointer-events: none;
}
.advantage-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 28px;
    font-weight: 900;
}
.advantage-item h3 { font-size: 18px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.advantage-item p { font-size: 14px; color: var(--text-muted); }

/* ===== 服务流程 ===== */
.process-flow { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 20px; position: relative; }
.process-flow::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 8%;
    right: 8%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary-light));
    z-index: 0;
}
.process-step { flex: 1; min-width: 140px; text-align: center; position: relative; z-index: 1; }
.process-step-num {
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 900;
    box-shadow: 0 4px 15px rgba(25,118,210,0.3);
    border: 4px solid var(--white);
}
.process-step h4 { font-size: 17px; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; }
.process-step p { font-size: 13px; color: var(--text-muted); }

/* ===== 案例展示 ===== */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.case-card-img { width: 100%; height: 220px; overflow: hidden; position: relative; }
.case-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.case-card:hover .case-card-img img { transform: scale(1.1); }
.case-card-img .case-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: var(--white);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}
.case-card-body { padding: 20px; }
.case-card-body h3 { font-size: 17px; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; }
.case-card-body p { font-size: 14px; color: var(--text-muted); }

/* ===== 新闻列表 ===== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.news-card-img { width: 100%; height: 180px; overflow: hidden; }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.news-card:hover .news-card-img img { transform: scale(1.08); }
.news-card-body { padding: 20px; }
.news-card-date { font-size: 13px; color: var(--primary); margin-bottom: 8px; font-weight: 600; }
.news-card-body h3 { font-size: 16px; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; line-height: 1.5; }
.news-card-body p { font-size: 14px; color: var(--text-muted); }

/* ===== 预约表单 ===== */
.booking-section {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}
.booking-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}
.booking-form-wrapper {
    max-width: 700px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    position: relative;
    z-index: 1;
}
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; }
.form-group label .required { color: var(--danger); }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    transition: var(--transition);
    background: var(--bg-light);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(25,118,210,0.1);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.btn-submit {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: var(--white);
    font-size: 17px;
    font-weight: 700;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(13,71,161,0.3); }

/* ===== 页面Banner ===== */
.page-banner {
    height: 280px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 40px 40px;
}
.page-banner::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: radial-gradient(ellipse at center bottom, rgba(66,165,245,0.3), transparent 70%);
}
.page-banner-content { position: relative; z-index: 1; }
.page-banner h1 { font-size: 36px; font-weight: 900; margin-bottom: 10px; letter-spacing: 2px; }
.page-banner .breadcrumb { font-size: 14px; opacity: 0.85; }
.page-banner .breadcrumb a:hover { text-decoration: underline; }

/* ===== 关于我们页 ===== */
.about-content { padding: 60px 0; }
.about-intro {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
    margin-bottom: 40px;
}
.about-intro h2 { font-size: 24px; font-weight: 700; color: var(--primary-dark); margin-bottom: 20px; }
.about-intro p { font-size: 15px; line-height: 2; color: var(--text-body); margin-bottom: 16px; text-indent: 2em; }
.about-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.about-feature-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 30px 24px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--primary);
}
.about-feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.about-feature-card h3 { font-size: 18px; font-weight: 700; color: var(--text-dark); margin-bottom: 12px; }
.about-feature-card p { font-size: 14px; color: var(--text-muted); }
.about-feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 24px;
    font-weight: 900;
}

/* ===== 业务详情页 ===== */
.business-detail { padding: 60px 0; }
.business-detail-header { text-align: center; margin-bottom: 40px; }
.business-detail-header h1 { font-size: 30px; font-weight: 900; color: var(--text-dark); margin-bottom: 10px; }
.business-detail-header p { font-size: 16px; color: var(--text-muted); }
.business-detail-content {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
}
.business-detail-content h2 { font-size: 22px; font-weight: 700; color: var(--primary-dark); margin: 30px 0 16px; padding-left: 14px; border-left: 4px solid var(--primary); }
.business-detail-content p { font-size: 15px; line-height: 2; color: var(--text-body); margin-bottom: 16px; text-indent: 2em; }
.business-detail-content ul { margin: 16px 0 24px 2em; }
.business-detail-content ul li { font-size: 15px; line-height: 2; color: var(--text-body); position: relative; padding-left: 20px; }
.business-detail-content ul li::before { content: ''; position: absolute; left: 0; top: 12px; width: 8px; height: 8px; background: var(--primary); border-radius: 50%; }
.recycle-items-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 24px 0; }
.recycle-item {
    background: var(--primary-lighter);
    border-radius: var(--radius-sm);
    padding: 16px 14px;
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-dark);
    transition: var(--transition);
    border: 1px solid transparent;
}
.recycle-item:hover { background: var(--white); border-color: var(--primary); transform: translateY(-3px); box-shadow: var(--shadow); }

/* ===== 新闻/案例列表页 ===== */
.list-page { padding: 50px 0; }
.list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
.list-sidebar { margin-bottom: 30px; }
.list-category { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 30px; }
.list-category a {
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    background: var(--white);
    color: var(--text-body);
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.list-category a:hover, .list-category a.active { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: var(--white); }

/* 分页 */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 30px; }
.pagination a, .pagination span {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    background: var(--white);
    color: var(--text-body);
    box-shadow: var(--shadow);
    padding: 0 12px;
}
.pagination a:hover, .pagination .current { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: var(--white); }

/* ===== 文章详情 ===== */
.article-detail { padding: 50px 0; }
.article-wrapper { max-width: 900px; margin: 0 auto; }
.article-box {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
}
.article-box h1 { font-size: 28px; font-weight: 900; color: var(--text-dark); margin-bottom: 16px; line-height: 1.5; }
.article-meta { display: flex; gap: 20px; font-size: 13px; color: var(--text-muted); padding-bottom: 20px; border-bottom: 1px solid var(--border); margin-bottom: 24px; }
.article-content p { font-size: 15px; line-height: 2; color: var(--text-body); margin-bottom: 16px; text-indent: 2em; }
.article-content h2 { font-size: 20px; font-weight: 700; color: var(--primary-dark); margin: 24px 0 12px; }
.article-content img { border-radius: var(--radius-sm); margin: 20px 0; }
.article-nav { display: flex; justify-content: space-between; margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--border); }
.article-nav a { font-size: 14px; color: var(--primary); }

/* ===== FAQ ===== */
.faq-list { max-width: 900px; margin: 0 auto; }
.faq-item {
    background: var(--white);
    border-radius: var(--radius);
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow-hover); }
.faq-question {
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-question .faq-icon { width: 28px; height: 28px; background: var(--primary-lighter); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 18px; color: var(--primary); font-weight: 900; transition: var(--transition); flex-shrink: 0; }
.faq-item.active .faq-question .faq-icon { background: var(--primary); color: var(--white); transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-item.active .faq-answer { max-height: 500px; }
.faq-answer-inner { padding: 0 24px 20px; font-size: 15px; color: var(--text-muted); line-height: 1.9; }

/* ===== 联系我们 ===== */
.contact-info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
.contact-info-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 36px 24px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--primary);
}
.contact-info-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.contact-info-card h3 { font-size: 18px; font-weight: 700; color: var(--text-dark); margin: 16px 0 8px; }
.contact-info-card p { font-size: 15px; color: var(--text-muted); }
.contact-info-card .contact-icon { width: 64px; height: 64px; margin: 0 auto; background: linear-gradient(135deg, var(--primary-dark), var(--primary-light)); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--white); font-size: 24px; font-weight: 900; }
.contact-map { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }

/* ===== 服务优势完整页 ===== */
.advantage-full { padding: 60px 0; }
.advantage-full-content {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
}
.advantage-full-content p { font-size: 15px; line-height: 2.2; color: var(--text-body); margin-bottom: 16px; text-indent: 2em; }
.advantage-full-content h2 { font-size: 22px; font-weight: 700; color: var(--primary-dark); margin: 30px 0 16px; padding-left: 14px; border-left: 4px solid var(--primary); }

/* ===== 悬浮咨询按钮 ===== */
.float-consult {
    position: fixed;
    right: 20px;
    bottom: 100px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.float-consult a {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(13,71,161,0.3);
    transition: var(--transition);
    font-size: 20px;
    position: relative;
}
.float-consult a:hover { transform: scale(1.1); }
.float-consult a span {
    position: absolute;
    right: 65px;
    white-space: nowrap;
    background: var(--text-dark);
    color: var(--white);
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 13px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}
.float-consult a:hover span { opacity: 1; visibility: visible; }

/* ===== 回到顶部 ===== */
.back-to-top {
    position: fixed;
    right: 20px;
    bottom: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--white);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-hover);
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    font-size: 20px;
    font-weight: 900;
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--primary); color: var(--white); }

/* ===== 页脚 ===== */
.footer {
    background: linear-gradient(135deg, #0a2d6e, #0D47A1);
    color: rgba(255,255,255,0.8);
    padding: 50px 0 0;
    position: relative;
    overflow: hidden;
}
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary), var(--primary-light));
}
.footer::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: radial-gradient(ellipse at center bottom, rgba(66,165,245,0.15), transparent 70%);
    pointer-events: none;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-col h4 { font-size: 16px; font-weight: 700; color: var(--white); margin-bottom: 18px; }
.footer-col p { font-size: 14px; line-height: 1.9; margin-bottom: 8px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 14px; color: rgba(255,255,255,0.7); }
.footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-col .footer-logo { font-size: 20px; font-weight: 900; color: var(--white); margin-bottom: 16px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}
.footer-bottom a { color: rgba(255,255,255,0.7); }
.footer-bottom a:hover { color: var(--primary-light); }
.footer-links { display: flex; gap: 15px; justify-content: center; margin-top: 8px; flex-wrap: wrap; }
.footer-links a { font-size: 12px; color: rgba(255,255,255,0.5); }

/* ===== 提示消息 ===== */
.alert {
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.alert-success { background: #E8F5E9; color: #2E7D32; border: 1px solid #C8E6C9; }
.alert-error { background: #FFEBEE; color: #C62828; border: 1px solid #FFCDD2; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .business-grid, .advantage-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid, .news-grid, .list-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .recycle-items-grid { grid-template-columns: repeat(3, 1fr); }
    .about-features { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .top-bar { display: none; }
    .header .container { height: 64px; }
    .logo-text { font-size: 18px; }
    .logo-text small { font-size: 10px; }
    .menu-toggle { display: flex; }
    .nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease;
        box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    }
    .nav.open { max-height: 600px; overflow-y: auto; }
    .nav > li > a { height: auto; padding: 14px 24px; line-height: 1.5; border-bottom: 1px solid var(--border); }
    .nav .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; min-width: auto; }
    .nav .dropdown a { padding-left: 40px; }
    .banner-slide { height: 360px; }
    .banner-content h2 { font-size: 26px; }
    .banner-content p { font-size: 15px; }
    .banner-content .banner-tags span { font-size: 12px; padding: 4px 12px; }
    .section { padding: 40px 0; }
    .section-header h2 { font-size: 24px; }
    .business-grid, .advantage-grid, .case-grid, .news-grid, .list-grid { grid-template-columns: 1fr; }
    .recycle-items-grid { grid-template-columns: repeat(2, 1fr); }
    .about-features, .contact-info-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .process-flow { flex-direction: column; align-items: center; }
    .process-flow::before { display: none; }
    .form-row { grid-template-columns: 1fr; }
    .page-banner { height: 200px; }
    .page-banner h1 { font-size: 24px; }
    .booking-form-wrapper { padding: 24px; }
    .about-intro, .business-detail-content, .article-box, .advantage-full-content { padding: 24px; }
    .float-consult { right: 12px; bottom: 80px; }
    .float-consult a { width: 48px; height: 48px; font-size: 16px; }
    .back-to-top { right: 12px; bottom: 20px; width: 40px; height: 40px; }
    .article-nav { flex-direction: column; gap: 10px; }
}