/* ============================================
   机械设备企业官网 - 主样式文件
   主色: #1a2332 (深蓝黑) / #e8941a (工业橙) / #2c3e50 (钢铁灰)
============================================ */

:root {
    --primary: #1a2332;
    --primary-light: #2c3e50;
    --accent: #e8941a;
    --accent-dark: #c97c10;
    --text-dark: #1f2937;
    --text-gray: #6b7280;
    --text-light: #9ca3af;
    --bg-light: #f5f6f8;
    --bg-white: #ffffff;
    --border: #e5e7eb;
    --shadow: 0 4px 16px rgba(0,0,0,0.10);
    --transition: all 0.3s ease;
}

* { box-sizing: border-box; }
body { font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif; color: var(--text-dark); background: #fff; font-size: 15px; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
a:hover { text-decoration: none; }
ul { list-style: none; padding: 0; margin: 0; }
img { max-width: 100%; }

/* ---- 顶部信息栏 ---- */
.top-bar {
    background: var(--primary);
    color: rgba(255,255,255,0.75);
    font-size: 13px;
    padding: 7px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1031;
    height: 37px;
    overflow: hidden;
}
/* 主导航在 top-bar 下方 */
.main-nav {
    top: 37px !important;
}
.top-info span { margin-right: 24px; white-space: nowrap; }
.top-info i { color: var(--accent); margin-right: 5px; }
.top-social a { color: rgba(255,255,255,0.7); margin-left: 12px; font-size: 15px; }
.top-social a:hover { color: var(--accent); }

/* ---- 主导航 ---- */
.main-nav {
    background: var(--primary) !important;
    padding: 0;
    min-height: 68px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.15);
    transition: all 0.4s ease;
}
.main-nav.scrolled {
    background: rgba(26, 35, 50, 0.97) !important;
    box-shadow: 0 4px 24px rgba(0,0,0,0.25);
    min-height: 60px;
}
.navbar-brand { padding: 8px 0; }
.brand-icon { line-height: 1; }
.brand-name { font-size: 18px; font-weight: 700; color: #fff; letter-spacing: 1px; display: block; line-height: 1.2; }
.brand-slogan { font-size: 11px; color: var(--accent); letter-spacing: 1px; }
.main-nav .nav-link {
    color: rgba(255,255,255,0.85) !important;
    font-size: 15px;
    font-weight: 500;
    padding: 22px 18px !important;
    position: relative;
    transition: var(--transition);
}
.main-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--accent);
    transition: width 0.3s ease;
}
.main-nav .nav-item.active .nav-link,
.main-nav .nav-link:hover { color: #fff !important; }
.main-nav .nav-item.active .nav-link::after,
.main-nav .nav-link:hover::after { width: 60%; }

.nav-spacer { height: 105px; }
.nav-spacer-mobile { height: 68px; }

/* ---- 搜索框 ---- */
.search-form { display: flex; }
.search-input {
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    border-right: none;
    color: #fff;
    padding: 7px 14px;
    font-size: 13px;
    width: 180px;
    outline: none;
    transition: var(--transition);
}
.search-input::placeholder { color: rgba(255,255,255,0.5); }
.search-input:focus { background: rgba(255,255,255,0.2); width: 220px; }
.search-btn {
    background: var(--accent);
    border: none;
    color: #fff;
    padding: 7px 14px;
    cursor: pointer;
    transition: var(--transition);
}
.search-btn:hover { background: var(--accent-dark); }

/* ---- 页面横幅 (top.html) ---- */
.page-banner {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: 50px 0;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    right: -50px;
    top: -50px;
    width: 300px;
    height: 300px;
    border: 60px solid rgba(232,148,26,0.08);
    border-radius: 50%;
}
.page-banner::after {
    content: '';
    position: absolute;
    right: 50px;
    top: 50%;
    transform: translateY(-50%);
    width: 150px;
    height: 150px;
    border: 30px solid rgba(232,148,26,0.05);
    border-radius: 50%;
}
.page-banner h1 { color: #fff; font-size: 28px; font-weight: 700; margin: 0 0 8px; }
.page-banner p { color: rgba(255,255,255,0.7); margin: 0 0 12px; font-size: 14px; }
.breadcrumb-wrap .breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
}
.breadcrumb-item, .breadcrumb-item a { color: rgba(255,255,255,0.65); font-size: 13px; }
.breadcrumb-item.active { color: var(--accent); }
.breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,0.4); }

/* ---- 通用区块样式 ---- */
.section-header { text-align: center; margin-bottom: 50px; }
.section-tag {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    padding: 3px 14px;
    letter-spacing: 2px;
    margin-bottom: 12px;
    text-transform: uppercase;
}
.section-title { font-size: 30px; font-weight: 700; color: var(--text-dark); margin-bottom: 12px; line-height: 1.3; }
.section-subtitle { color: var(--text-gray); font-size: 15px; margin: 0; }
.section-divider {
    width: 50px;
    height: 3px;
    background: var(--accent);
    margin: 14px auto 0;
}

/* ---- Hero 轮播 ---- */
.hero-section { position: relative; overflow: hidden; }
.hero-section .swiper-slide { position: relative; }
.hero-section .swiper-slide img { width: 100%; height: 580px; object-fit: cover; display: block; }
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(26,35,50,0.80) 0%, rgba(26,35,50,0.35) 70%);
    display: flex;
    align-items: center;
}
.hero-content { padding: 0 15px; }
.hero-label {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    padding: 4px 14px;
    letter-spacing: 2px;
    margin-bottom: 16px;
}
.hero-title { font-size: 44px; font-weight: 700; color: #fff; line-height: 1.2; margin-bottom: 16px; text-shadow: 0 2px 8px rgba(0,0,0,0.3); }
.hero-subtitle { font-size: 17px; color: rgba(255,255,255,0.85); margin-bottom: 32px; line-height: 1.7; max-width: 560px; }
.btn-hero-primary {
    background: var(--accent);
    color: #fff;
    padding: 13px 34px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    display: inline-block;
    transition: var(--transition);
    letter-spacing: 1px;
}
.btn-hero-primary:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(232,148,26,0.35); }
.btn-hero-outline {
    background: transparent;
    color: #fff;
    padding: 12px 32px;
    font-size: 15px;
    font-weight: 600;
    border: 2px solid rgba(255,255,255,0.7);
    display: inline-block;
    margin-left: 14px;
    transition: var(--transition);
}
.btn-hero-outline:hover { background: rgba(255,255,255,0.15); color: #fff; border-color: #fff; }

/* 轮播分页 */
.swiper-pagination-bullet { width: 28px; height: 4px; border-radius: 2px; background: rgba(255,255,255,0.45); opacity: 1; }
.swiper-pagination-bullet-active { background: var(--accent); width: 44px; }
.swiper-button-prev, .swiper-button-next {
    width: 48px; height: 48px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    transition: var(--transition);
}
.swiper-button-prev:hover, .swiper-button-next:hover { background: var(--accent); border-color: var(--accent); }
.swiper-button-prev::after, .swiper-button-next::after { font-size: 16px; color: #fff; }

/* ---- 数字统计栏 ---- */
.stats-bar { background: var(--accent); padding: 22px 0; }
.stat-item { text-align: center; color: #fff; }
.stat-num { font-size: 36px; font-weight: 700; line-height: 1; }
.stat-unit { font-size: 18px; font-weight: 600; }
.stat-label { font-size: 13px; opacity: 0.85; margin-top: 4px; }
.stats-bar .col-6, .stats-bar .col-md-3 { border-right: 1px solid rgba(255,255,255,0.25); }
.stats-bar .col-6:last-child, .stats-bar .col-md-3:last-child { border-right: none; }

/* ---- 产品卡片 ---- */
.product-card {
    background: #fff;
    border: 1px solid var(--border);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.product-card:hover { border-color: var(--accent); box-shadow: 0 8px 30px rgba(232,148,26,0.15); transform: translateY(-4px); }
.product-card .card-img { position: relative; overflow: hidden; height: 220px; }
.product-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.product-card:hover .card-img img { transform: scale(1.07); }
.product-card .card-overlay {
    position: absolute; inset: 0;
    background: rgba(26,35,50,0.75);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: var(--transition);
}
.product-card:hover .card-overlay { opacity: 1; }
.card-overlay-btn {
    background: var(--accent);
    color: #fff;
    padding: 10px 22px;
    font-size: 14px;
    font-weight: 600;
}
.card-overlay-btn:hover { background: var(--accent-dark); color: #fff; }
.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--accent);
    color: #fff;
    font-size: 11px;
    padding: 3px 10px;
    font-weight: 600;
}
.product-card .card-body { padding: 18px; flex: 1; display: flex; flex-direction: column; }
.product-card .card-title { font-size: 16px; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; line-height: 1.4; }
.product-card .card-title a:hover { color: var(--accent); }
.product-card .card-text { color: var(--text-gray); font-size: 13px; line-height: 1.7; flex: 1; }
.product-card .card-footer-row { display: flex; justify-content: space-between; align-items: center; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--border); }
.btn-card-more {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    font-size: 12px;
    padding: 5px 14px;
    transition: var(--transition);
    display: inline-block;
}
.btn-card-more:hover { background: var(--accent); color: #fff; }

/* ---- 新闻卡片 ---- */
.news-card { background: #fff; border: 1px solid var(--border); overflow: hidden; transition: var(--transition); height: 100%; }
.news-card:hover { border-color: var(--accent); box-shadow: 0 8px 24px rgba(0,0,0,0.1); transform: translateY(-3px); }
.news-card .news-img { position: relative; overflow: hidden; height: 190px; }
.news-card .news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.news-card:hover .news-img img { transform: scale(1.06); }
.news-date-badge {
    position: absolute;
    bottom: 0; left: 0;
    background: var(--accent);
    color: #fff;
    padding: 6px 12px;
    text-align: center;
    line-height: 1;
}
.news-date-badge .day { font-size: 22px; font-weight: 700; display: block; }
.news-date-badge .month { font-size: 11px; }
.news-card .news-body { padding: 18px; }
.news-card .news-title { font-size: 15px; font-weight: 600; margin-bottom: 10px; line-height: 1.5; }
.news-card .news-title a { color: var(--text-dark); }
.news-card .news-title a:hover { color: var(--accent); }
.news-card .news-excerpt { color: var(--text-gray); font-size: 13px; line-height: 1.7; margin-bottom: 14px; }
.news-card .news-footer { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--border); padding-top: 12px; }
.news-meta-info { color: var(--text-light); font-size: 12px; }
.news-meta-info i { color: var(--accent); margin-right: 3px; }
.news-readmore { color: var(--accent); font-size: 13px; font-weight: 600; }
.news-readmore:hover { color: var(--accent-dark); }

/* ---- 优势特色 ---- */
.feature-item { text-align: center; padding: 30px 20px; background: #fff; border: 1px solid var(--border); transition: var(--transition); height: 100%; }
.feature-item:hover { border-color: var(--accent); box-shadow: 0 6px 24px rgba(232,148,26,0.12); transform: translateY(-3px); }
.feature-icon { width: 70px; height: 70px; background: var(--primary); display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; transition: var(--transition); }
.feature-item:hover .feature-icon { background: var(--accent); }
.feature-icon i { font-size: 28px; color: #fff; }
.feature-title { font-size: 16px; font-weight: 600; margin-bottom: 10px; color: var(--text-dark); }
.feature-desc { color: var(--text-gray); font-size: 13px; line-height: 1.8; }

/* ---- 关于我们区块 ---- */
.about-label {
    display: inline-flex; align-items: center;
    background: var(--bg-light);
    border-left: 4px solid var(--accent);
    padding: 8px 16px;
    font-size: 13px;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.about-title { font-size: 28px; font-weight: 700; color: var(--text-dark); margin-bottom: 14px; line-height: 1.4; }
.about-desc { color: var(--text-gray); line-height: 1.9; font-size: 15px; margin-bottom: 20px; }
.about-highlights { margin-bottom: 24px; }
.highlight-item { display: flex; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border); }
.highlight-item:last-child { border-bottom: none; }
.highlight-num { font-size: 28px; font-weight: 700; color: var(--accent); line-height: 1; min-width: 80px; }
.highlight-text { color: var(--text-gray); font-size: 14px; }
.about-img-wrap { position: relative; }
.about-img-wrap img { width: 100%; height: 360px; object-fit: cover; display: block; }
.about-tag-badge {
    position: absolute;
    bottom: 0; right: 0;
    background: var(--primary);
    color: #fff;
    padding: 18px 20px;
    min-width: 120px;
    text-align: center;
}
.about-tag-badge .big-num { font-size: 32px; font-weight: 700; color: var(--accent); display: block; line-height: 1; }
.about-tag-badge .tag-text { font-size: 12px; opacity: 0.8; margin-top: 4px; }

/* ---- 应用案例 ---- */
.case-card { position: relative; overflow: hidden; background: var(--primary); }
.case-card img { width: 100%; height: 260px; object-fit: cover; transition: transform 0.5s ease; opacity: 0.7; display: block; }
.case-card:hover img { transform: scale(1.08); opacity: 0.5; }
.case-info {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    background: linear-gradient(to top, rgba(26,35,50,0.95) 0%, transparent 100%);
    padding: 30px 18px 18px;
    transition: var(--transition);
}
.case-title { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 6px; }
.case-tag { font-size: 12px; color: var(--accent); }
.case-hover {
    position: absolute; inset: 0;
    background: rgba(26,35,50,0.80);
    display: flex; align-items: center; justify-content: center;
    opacity: 0;
    transition: var(--transition);
}
.case-card:hover .case-hover { opacity: 1; }

/* ---- 内页通用 ---- */
.inner-content { padding: 40px 0; background: var(--bg-light); }
.content-wrapper { background: #fff; padding: 30px; border: 1px solid var(--border); }
.content-body { line-height: 1.9; font-size: 15px; color: var(--text-dark); }
.content-body img { max-width: 100%; height: auto; margin: 12px 0; }
.content-body table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.content-body td, .content-body th { border: 1px solid var(--border); padding: 10px 14px; }
.content-body th { background: var(--bg-light); font-weight: 600; }
.content-body h2, .content-body h3 { color: var(--text-dark); margin: 20px 0 10px; }
.content-body h2 { font-size: 20px; border-left: 4px solid var(--accent); padding-left: 12px; }

/* ---- 侧边栏 ---- */
.sidebar { position: sticky; top: 88px; }
.sidebar-box { background: #fff; border: 1px solid var(--border); margin-bottom: 20px; overflow: hidden; }
.sidebar-title { background: var(--primary); color: #fff; padding: 12px 18px; font-size: 15px; font-weight: 600; display: flex; align-items: center; }
.sidebar-title i { color: var(--accent); margin-right: 8px; }
.sidebar-body { padding: 14px 18px; }
.sidebar-nav-item { display: flex; justify-content: space-between; align-items: center; padding: 9px 0; border-bottom: 1px dashed var(--border); font-size: 14px; color: var(--text-dark); }
.sidebar-nav-item:last-child { border-bottom: none; }
.sidebar-nav-item:hover { color: var(--accent); padding-left: 6px; }
.sidebar-nav-item.active { color: var(--accent); font-weight: 600; }
.sidebar-nav-item .count { background: var(--bg-light); color: var(--text-gray); font-size: 11px; padding: 2px 7px; }
.sidebar-product-item { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.sidebar-product-item:last-child { border-bottom: none; }
.sidebar-product-item img { width: 64px; height: 64px; object-fit: cover; flex-shrink: 0; }
.sidebar-product-title { font-size: 13px; font-weight: 600; color: var(--text-dark); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sidebar-product-title:hover { color: var(--accent); }
.sidebar-product-meta { font-size: 12px; color: var(--text-light); margin-top: 4px; }
.contact-info-item { display: flex; align-items: flex-start; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.contact-info-item:last-child { border-bottom: none; }
.contact-info-item i { color: var(--accent); font-size: 16px; margin-top: 2px; flex-shrink: 0; }

/* ---- 分页 ---- */
.pagination .page-link { border: 1px solid var(--border); color: var(--text-dark); margin: 0 3px; padding: 7px 14px; font-size: 14px; transition: var(--transition); }
.pagination .page-link:hover, .pagination .page-item.active .page-link { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ---- 联系我们 ---- */
.contact-form .form-group label { font-weight: 600; font-size: 14px; color: var(--text-dark); margin-bottom: 5px; display: block; }
.contact-form .form-control { border: 1px solid var(--border); padding: 10px 14px; font-size: 14px; transition: var(--transition); border-radius: 0; }
.contact-form .form-control:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232,148,26,0.12); }
.btn-contact-submit { background: var(--accent); color: #fff; border: none; padding: 13px 36px; font-size: 15px; font-weight: 600; cursor: pointer; transition: var(--transition); }
.btn-contact-submit:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 6px 18px rgba(232,148,26,0.3); }
.contact-card { background: var(--primary); color: #fff; padding: 24px; margin-bottom: 16px; }
.contact-card i { font-size: 28px; color: var(--accent); margin-bottom: 12px; display: block; }
.contact-card h5 { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.contact-card p { font-size: 13px; opacity: 0.75; margin: 0; }
.contact-card .num { font-size: 20px; font-weight: 700; color: var(--accent); }

/* ---- 招聘 ---- */
.job-item { background: #fff; border: 1px solid var(--border); padding: 20px; margin-bottom: 16px; transition: var(--transition); }
.job-item:hover { border-color: var(--accent); box-shadow: 0 4px 16px rgba(232,148,26,0.1); }
.job-title { font-size: 17px; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; }
.job-meta span { font-size: 12px; color: var(--text-light); margin-right: 16px; }
.job-meta i { color: var(--accent); margin-right: 4px; }
.job-tags { margin-top: 10px; }
.job-tag { display: inline-block; background: var(--bg-light); color: var(--text-gray); font-size: 12px; padding: 3px 10px; margin-right: 6px; margin-bottom: 4px; border: 1px solid var(--border); }

/* ---- 搜索结果 ---- */
.search-result-item { background: #fff; border: 1px solid var(--border); padding: 20px; margin-bottom: 14px; display: flex; gap: 16px; transition: var(--transition); }
.search-result-item:hover { border-color: var(--accent); }
.search-result-img { width: 100px; height: 80px; object-fit: cover; flex-shrink: 0; }
.search-result-title { font-size: 16px; font-weight: 600; color: var(--text-dark); margin-bottom: 6px; }
.search-result-title:hover { color: var(--accent); }
.search-result-excerpt { font-size: 13px; color: var(--text-gray); line-height: 1.7; }
.search-keyword { color: var(--accent); font-weight: 600; }

/* ---- 页脚 CTA ---- */
.footer-cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: 40px 0;
    border-top: 4px solid var(--accent);
}
.footer-cta h3 { color: #fff; font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.footer-cta p { color: rgba(255,255,255,0.7); margin: 0; font-size: 14px; }
.btn-cta { background: var(--accent); color: #fff; padding: 12px 28px; font-size: 15px; font-weight: 600; border: none; display: inline-block; transition: var(--transition); }
.btn-cta:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 18px rgba(232,148,26,0.35); }

/* ---- 主页脚 ---- */
.main-footer { background: var(--primary); color: rgba(255,255,255,0.75); padding: 50px 0 0; }
.footer-brand-name { font-size: 17px; font-weight: 700; color: #fff; }
.footer-desc { font-size: 13px; line-height: 1.9; color: rgba(255,255,255,0.6); margin-top: 12px; margin-bottom: 16px; }
.footer-cert span { display: inline-block; margin-right: 14px; font-size: 12px; }
.footer-cert .fa { color: var(--accent); margin-right: 4px; }
.footer-title { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 18px; padding-bottom: 8px; border-bottom: 2px solid var(--accent); display: inline-block; }
.footer-nav li { margin-bottom: 8px; }
.footer-nav a { font-size: 13px; color: rgba(255,255,255,0.6); transition: var(--transition); }
.footer-nav a:hover { color: var(--accent); padding-left: 4px; }
.footer-nav a .fa { font-size: 10px; }
.footer-contact li { font-size: 13px; color: rgba(255,255,255,0.6); margin-bottom: 10px; display: flex; align-items: flex-start; gap: 8px; }
.footer-contact .fa { color: var(--accent); margin-top: 2px; flex-shrink: 0; }
.footer-qrcode img { max-width: 120px; }
.qr-tip { font-size: 12px; color: rgba(255,255,255,0.55); margin-top: 8px; }
.footer-links { border-top: 1px solid rgba(255,255,255,0.1); }
.friend-links { font-size: 13px; color: rgba(255,255,255,0.5); }
.friend-links a { color: rgba(255,255,255,0.55); margin: 0 8px; transition: var(--transition); }
.friend-links a:hover { color: var(--accent); }
.icp-link { color: rgba(255,255,255,0.5); font-size: 13px; }
.icp-link:hover { color: var(--accent); }
.footer-bottom { background: rgba(0,0,0,0.2); padding: 14px 0; margin-top: 24px; font-size: 13px; color: rgba(255,255,255,0.45); }

/* ---- 手机底部导航 ---- */
.mobile-bottom-nav {
    position: fixed; bottom: 0; left: 0; right: 0;
    background: var(--primary);
    z-index: 999;
    box-shadow: 0 -2px 12px rgba(0,0,0,0.2);
}
.mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 10px 0; color: rgba(255,255,255,0.75); font-size: 11px; border-right: 1px solid rgba(255,255,255,0.1); transition: var(--transition); }
.mobile-bottom-nav .col-4:last-child a { border-right: none; }
.mobile-bottom-nav a:hover, .mobile-bottom-nav a:active { color: var(--accent); background: rgba(255,255,255,0.05); }
.mobile-bottom-nav a i { font-size: 18px; margin-bottom: 3px; }

/* ---- 悬浮客服 ---- */
.float-service { position: fixed; right: 0; bottom: 160px; z-index: 998; }
.service-item {
    background: var(--primary);
    color: #fff;
    width: 56px;
    padding: 10px 5px;
    text-align: center;
    cursor: pointer;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    transition: var(--transition);
    position: relative;
}
.service-item:hover { background: var(--accent); }
.service-item i { font-size: 20px; display: block; }
.service-item span { font-size: 11px; display: block; margin-top: 3px; }
.service-panel {
    position: absolute;
    right: 56px;
    top: 0;
    background: #fff;
    border: 1px solid var(--border);
    padding: 16px;
    min-width: 180px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.12);
    display: none;
}
.service-panel h6 { color: var(--primary); font-weight: 700; margin-bottom: 8px; font-size: 14px; }
.service-panel p { font-size: 13px; color: var(--text-gray); margin-bottom: 5px; }
.phone-num { font-size: 18px; font-weight: 700; color: var(--accent) !important; }
.service-panel a { font-size: 14px; color: var(--accent); font-weight: 600; }
#backTop { display: none; }
#backTop.visible { display: block; }

/* ---- 产品详情 ---- */
.product-detail-gallery { border: 1px solid var(--border); overflow: hidden; background: var(--bg-light); }
.product-detail-gallery img { width: 100%; height: 360px; object-fit: contain; padding: 10px; background: #fff; }
.product-thumbs { margin-top: 8px; }
.product-thumb-item { border: 2px solid var(--border); cursor: pointer; overflow: hidden; transition: var(--transition); }
.product-thumb-item.active, .product-thumb-item:hover { border-color: var(--accent); }
.product-thumb-item img { width: 100%; height: 70px; object-fit: cover; }
.product-info-title { font-size: 22px; font-weight: 700; color: var(--text-dark); margin-bottom: 14px; border-bottom: 2px solid var(--border); padding-bottom: 14px; }
.product-info-table { width: 100%; border-collapse: collapse; margin-bottom: 20px; }
.product-info-table td { padding: 10px 14px; border: 1px solid var(--border); font-size: 14px; }
.product-info-table td:first-child { background: var(--bg-light); font-weight: 600; color: var(--text-dark); width: 120px; }
.btn-inquiry { background: var(--accent); color: #fff; padding: 12px 28px; font-size: 15px; font-weight: 600; border: none; transition: var(--transition); display: inline-block; }
.btn-inquiry:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 18px rgba(232,148,26,0.3); }
.btn-inquiry-outline { background: transparent; border: 2px solid var(--accent); color: var(--accent); padding: 11px 26px; font-size: 15px; font-weight: 600; transition: var(--transition); display: inline-block; margin-left: 12px; }
.btn-inquiry-outline:hover { background: var(--accent); color: #fff; }
.detail-tabs .nav-tabs { border-bottom: 2px solid var(--accent); }
.detail-tabs .nav-link { border: none; padding: 12px 24px; font-size: 15px; font-weight: 600; color: var(--text-gray); background: var(--bg-light); margin-right: 4px; }
.detail-tabs .nav-link.active { background: var(--accent); color: #fff; }
.detail-tabs .nav-link:hover { color: var(--accent); }
.detail-tabs .tab-content { background: #fff; border: 1px solid var(--border); border-top: none; padding: 24px; }

/* ---- 通用按钮 ---- */
.btn-primary-main { background: var(--accent); color: #fff; padding: 11px 28px; font-size: 14px; font-weight: 600; border: none; display: inline-block; transition: var(--transition); }
.btn-primary-main:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); }
.btn-outline-main { background: transparent; border: 2px solid var(--accent); color: var(--accent); padding: 10px 26px; font-size: 14px; font-weight: 600; display: inline-block; transition: var(--transition); }
.btn-outline-main:hover { background: var(--accent); color: #fff; }

/* ---- 面包屑 ---- */
.page-breadcrumb { background: #fff; border-bottom: 1px solid var(--border); padding: 10px 0; }
.page-breadcrumb .breadcrumb { background: transparent; margin: 0; padding: 0; font-size: 13px; }
.page-breadcrumb .breadcrumb-item a { color: var(--text-gray); }
.page-breadcrumb .breadcrumb-item a:hover { color: var(--accent); }
.page-breadcrumb .breadcrumb-item.active { color: var(--accent); }
.page-breadcrumb .breadcrumb-item + .breadcrumb-item::before { color: var(--text-light); }

/* ---- 响应式 ---- */
@media (max-width: 991.98px) {
    /* 移动端隐藏顶部信息栏，导航栏回到顶部 */
    .top-bar { display: none !important; }
    .main-nav { top: 0 !important; }
    /* 导航折叠时样式 */
    .navbar-collapse { background: var(--primary); padding: 0 15px 12px; margin: 0 -15px; }
    .main-nav .nav-link { padding: 12px 15px !important; border-bottom: 1px solid rgba(255,255,255,0.07); }
    .main-nav .nav-link::after { display: none; }
    .navbar-toggler { border-color: rgba(255,255,255,0.4); padding: 6px 10px; }
    .navbar-toggler-icon { background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e"); }
    .nav-search { display: none !important; }
    /* 响应式内容 */
    .hero-section .swiper-slide img { height: 380px; }
    .hero-title { font-size: 28px; }
    .hero-subtitle { font-size: 15px; }
    .stats-bar .col-6 { border-right: 1px solid rgba(255,255,255,0.2); border-bottom: 1px solid rgba(255,255,255,0.2); }
    .stats-bar .col-6:nth-child(2n) { border-right: none; }
    .product-detail-gallery img { height: 260px; }
    .sidebar { position: static; }
    .btn-inquiry-outline { margin-left: 0; margin-top: 10px; }
}
@media (max-width: 767.98px) {
    .section-title { font-size: 22px; }
    .hero-section .swiper-slide img { height: 220px; }
    .hero-title { font-size: 20px; }
    .hero-subtitle { font-size: 13px; margin-bottom: 18px; }
    .btn-hero-primary, .btn-hero-outline { padding: 10px 20px; font-size: 13px; }
    .btn-hero-outline { margin-left: 8px; }
    .about-img-wrap img { height: 220px; }
    .about-title { font-size: 22px; }
    .content-wrapper { padding: 18px; }
    .section-header { margin-bottom: 30px; }
    .stat-num { font-size: 28px; }
    section.py-5 { padding-top: 2rem !important; padding-bottom: 2rem !important; }
    section.py-4 { padding-top: 1.25rem !important; padding-bottom: 1.25rem !important; }
    /* 移动端网格列间距缩小 */
    .row > .col-6 { padding-right: 8px; padding-left: 8px; }
    /* 搜索结果适配 */
    .search-result-item { flex-direction: column; }
    .search-result-img { width: 100%; height: 160px; }
    /* 产品详情按钮 */
    .btn-inquiry, .btn-inquiry-outline { display: block; width: 100%; text-align: center; margin-left: 0 !important; margin-bottom: 10px; }
    /* 页脚 CTA */
    .footer-cta { text-align: center; }
    .footer-cta h3 { font-size: 18px; }
}

/* ---- 宽屏适配（≥1400px） ---- */
@media (min-width: 1400px) {
    .container { max-width: 1360px; }
    .hero-section .swiper-slide img { height: 660px; }
    .hero-title { font-size: 52px; }
    .hero-subtitle { font-size: 19px; max-width: 680px; }
}
@media (min-width: 1600px) {
    .container { max-width: 1520px; }
    .hero-section .swiper-slide img { height: 720px; }
}