/* ===== 全局重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body { font-family: "Microsoft YaHei", "PingFang SC", -apple-system, sans-serif; color: #333; line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; }

/* ===== 动画 ===== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.animate-item { opacity: 0; animation: fadeInUp 0.6s ease forwards; }
.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }

/* ===== 导航栏 ===== */
.nav { background: linear-gradient(135deg, #1a5276, #2471a3); padding: 0 20px; position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
.nav-inner { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; height: 60px; }
.nav-logo { color: #fff; font-size: 20px; font-weight: bold; display: flex; align-items: center; gap: 8px; }
.nav-links { display: flex; gap: 30px; }
.nav-links a { color: #e8e8e8; font-size: 15px; transition: color 0.3s; padding: 5px 0; position: relative; }
.nav-links a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: #f9e79f; transition: width 0.3s; }
.nav-links a:hover::after { width: 100%; }
.nav-links a:hover { color: #f9e79f; }
.nav-phone { color: #f9e79f; font-size: 16px; font-weight: bold; display: flex; align-items: center; gap: 6px; }

/* ===== 汉堡菜单按钮 ===== */
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; z-index: 101; }
.nav-toggle span { display: block; width: 25px; height: 3px; background: #fff; border-radius: 2px; transition: all 0.3s; }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

/* ===== 横幅 ===== */
.banner { background: linear-gradient(135deg, #1a5276 0%, #2980b9 50%, #3498db 100%); color: #fff; text-align: center; padding: 80px 20px 70px; position: relative; overflow: hidden; }
.banner::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); opacity: 0.5; }
.banner h1 { font-size: 42px; margin-bottom: 15px; position: relative; }
.banner h2 { font-size: 22px; font-weight: normal; margin-bottom: 25px; position: relative; }
.banner .phone-big { font-size: 38px; font-weight: bold; color: #f9e79f; margin: 20px 0; position: relative; display: flex; align-items: center; justify-content: center; gap: 10px; }
.banner .tags { display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; margin-top: 25px; position: relative; }
.banner .tag { background: rgba(255,255,255,0.15); padding: 8px 20px; border-radius: 20px; font-size: 14px; backdrop-filter: blur(5px); border: 1px solid rgba(255,255,255,0.2); }

/* ===== 通用区块 ===== */
.section { max-width: 1200px; margin: 0 auto; padding: 60px 20px; }
.section-title { text-align: center; font-size: 28px; color: #1a5276; margin-bottom: 40px; position: relative; }
.section-title .icon { font-size: 32px; margin-bottom: 10px; display: block; }
.section-title::after { content: ''; display: block; width: 60px; height: 3px; background: linear-gradient(90deg, #2980b9, #3498db); margin: 12px auto 0; border-radius: 2px; }

/* ===== 客户信赖 ===== */
.trust-bar { background: linear-gradient(135deg, #f8f9fa, #e8f4f8); padding: 40px 20px; }
.trust-grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.trust-item { padding: 20px; }
.trust-item .number { font-size: 42px; font-weight: bold; color: #1a5276; line-height: 1.2; }
.trust-item .unit { font-size: 18px; color: #2980b9; }
.trust-item .label { font-size: 14px; color: #666; margin-top: 5px; }

/* ===== 为什么选择我们 ===== */
.why-us { background: linear-gradient(135deg, #1a5276, #2471a3); color: #fff; padding: 60px 20px; }
.why-us .section-title { color: #fff; }
.why-us .section-title::after { background: linear-gradient(90deg, #f9e79f, #f7dc6f); }
.why-grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px; }
.why-card { background: rgba(255,255,255,0.1); border-radius: 15px; padding: 30px 20px; text-align: center; backdrop-filter: blur(5px); border: 1px solid rgba(255,255,255,0.15); transition: transform 0.3s, background 0.3s; }
.why-card:hover { transform: translateY(-5px); background: rgba(255,255,255,0.15); }
.why-card .icon { font-size: 48px; margin-bottom: 15px; }
.why-card h3 { font-size: 18px; margin-bottom: 10px; color: #f9e79f; }
.why-card p { font-size: 14px; color: rgba(255,255,255,0.85); line-height: 1.6; }

/* ===== 关于我们 ===== */
.about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.about-card { background: #fff; border-radius: 15px; padding: 30px; border-left: 5px solid #2980b9; box-shadow: 0 5px 20px rgba(0,0,0,0.08); transition: transform 0.3s, box-shadow 0.3s; }
.about-card:hover { transform: translateX(5px); box-shadow: 0 8px 30px rgba(0,0,0,0.12); }
.about-card h3 { color: #1a5276; font-size: 20px; margin-bottom: 15px; display: flex; align-items: center; gap: 10px; }
.about-card p { color: #555; font-size: 15px; line-height: 1.8; }
.about-card .phone-inline { color: #e74c3c; font-weight: bold; }

/* ===== 产品展示 ===== */
.product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 25px; }
.product-card { background: #fff; border-radius: 15px; padding: 25px; box-shadow: 0 3px 15px rgba(0,0,0,0.06); transition: transform 0.3s, box-shadow 0.3s; border: 1px solid #e8e8e8; }
.product-card:hover { transform: translateY(-8px); box-shadow: 0 12px 35px rgba(0,0,0,0.12); }
.product-card .card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 15px; }
.product-card .card-icon { font-size: 36px; }
.product-card h3 { color: #1a5276; font-size: 18px; border-bottom: 2px solid #ecf0f1; padding-bottom: 12px; flex: 1; }
.product-card p { color: #555; font-size: 14px; margin-bottom: 12px; line-height: 1.7; }
.product-card .industry-tag { display: inline-flex; align-items: center; gap: 5px; background: #e8f6f3; color: #1a5276; padding: 4px 10px; border-radius: 15px; font-size: 12px; margin: 5px 3px 5px 0; }
.product-card ul { list-style: none; padding: 0; margin: 15px 0; }
.product-card ul li { padding: 5px 0; font-size: 14px; color: #555; display: flex; align-items: flex-start; gap: 8px; }
.product-card ul li::before { content: "\2714"; color: #27ae60; font-weight: bold; flex-shrink: 0; margin-top: 2px; }
.product-card .product-img { width: 100%; height: 200px; object-fit: cover; border-radius: 10px; margin-bottom: 15px; display: block; }
.product-card .phone-inline { color: #e74c3c; font-weight: bold; font-size: 15px; display: block; margin-top: 15px; padding-top: 15px; border-top: 1px dashed #e0e0e0; }
.delivery-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.delivery-grid > div { overflow: hidden; border-radius: 12px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); }
.delivery-grid img { width: 100%; display: block; }
@media (max-width: 600px) { .delivery-grid { grid-template-columns: 1fr; } }

/* ===== 采购流程 ===== */
.process { background: #f8f9fa; padding: 50px 20px; }
.process-steps { max-width: 1000px; margin: 0 auto; display: flex; justify-content: space-between; position: relative; }
.process-steps::before { content: ''; position: absolute; top: 40px; left: 80px; right: 80px; height: 3px; background: linear-gradient(90deg, #2980b9, #3498db, #2980b9); border-radius: 2px; }
.process-step { text-align: center; position: relative; z-index: 1; flex: 1; }
.process-step .step-icon { width: 80px; height: 80px; background: linear-gradient(135deg, #1a5276, #2980b9); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 32px; margin: 0 auto 15px; box-shadow: 0 5px 15px rgba(26, 82, 118, 0.3); }
.process-step .step-num { background: #f9e79f; color: #1a5276; width: 28px; height: 28px; border-radius: 50%; font-size: 14px; font-weight: bold; display: flex; align-items: center; justify-content: center; margin: 0 auto 10px; }
.process-step h4 { font-size: 16px; color: #1a5276; margin-bottom: 5px; }
.process-step p { font-size: 13px; color: #777; }

/* ===== FAQ ===== */
.faq { background: #fff; }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: #f8f9fa; border-radius: 12px; padding: 20px 25px; margin-bottom: 15px; border-left: 4px solid #2980b9; transition: box-shadow 0.3s; }
.faq-item:hover { box-shadow: 0 5px 20px rgba(0,0,0,0.08); }
.faq-item h4 { color: #1a5276; font-size: 16px; margin-bottom: 10px; display: flex; align-items: flex-start; gap: 10px; }
.faq-item h4::before { content: "\2753"; flex-shrink: 0; }
.faq-item p { color: #555; font-size: 14px; line-height: 1.7; padding-left: 28px; }

/* ===== 产品对比表 ===== */
.compare-section { background: #fff; }
.compare-table-wrap { max-width: 1000px; margin: 0 auto 40px; overflow-x: auto; }
.compare-table-wrap h3 { color: #1a5276; font-size: 20px; margin-bottom: 15px; padding-left: 15px; border-left: 4px solid #2980b9; }
.compare-table { width: 100%; border-collapse: collapse; font-size: 14px; background: #fff; box-shadow: 0 2px 12px rgba(0,0,0,0.06); border-radius: 10px; overflow: hidden; }
.compare-table th { background: linear-gradient(135deg, #1a5276, #2980b9); color: #fff; padding: 12px 15px; text-align: left; font-weight: 600; font-size: 14px; }
.compare-table td { padding: 11px 15px; border-bottom: 1px solid #ecf0f1; color: #444; line-height: 1.5; }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tr:nth-child(even) td { background: #f8f9fa; }
.compare-table .highlight { color: #27ae60; font-weight: 600; }
.compare-table .product-name { color: #1a5276; font-weight: 600; }
.timestamp { text-align: center; font-size: 12px; color: #999; margin-top: 8px; }

/* ===== 联系方式 ===== */
.contact-box { background: linear-gradient(135deg, #1a5276, #2471a3); color: #fff; border-radius: 20px; padding: 50px; text-align: center; position: relative; overflow: hidden; }
.contact-box::before { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 60%); }
.contact-box h3 { font-size: 28px; margin-bottom: 30px; position: relative; }
.contact-item { font-size: 17px; margin: 15px 0; position: relative; }
.contact-item .label { color: #f9e79f; font-weight: bold; }
.phone-huge { font-size: 46px; font-weight: bold; color: #f9e79f; margin: 25px 0; display: block; position: relative; }
.wechat-hint { background: rgba(255,255,255,0.1); border-radius: 12px; padding: 15px 20px; margin: 20px auto; max-width: 300px; display: flex; align-items: center; justify-content: center; gap: 10px; font-size: 15px; }
.service-area { background: rgba(255,255,255,0.08); border-radius: 12px; padding: 25px; margin-top: 25px; font-size: 15px; line-height: 2.2; position: relative; }
.service-area strong { color: #f9e79f; }

/* ===== 底部 ===== */
.footer { background: #1a5276; color: #ccc; padding: 40px 20px 60px; }
.footer-content { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.footer-col h4 { color: #f9e79f; font-size: 16px; margin-bottom: 15px; }
.footer-col p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.7); }
.footer-col a { color: rgba(255,255,255,0.7); transition: color 0.3s; }
.footer-col a:hover { color: #f9e79f; }
.footer-bottom { max-width: 1200px; margin: 30px auto 0; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); text-align: center; font-size: 13px; color: rgba(255,255,255,0.5); }
.footer-bottom a { color: rgba(255,255,255,0.5); }

/* ===== 返回顶部 ===== */
.back-to-top { position: fixed; bottom: 90px; right: 20px; width: 50px; height: 50px; background: linear-gradient(135deg, #1a5276, #2980b9); border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; opacity: 0; visibility: hidden; transition: all 0.3s; z-index: 99; box-shadow: 0 3px 15px rgba(0,0,0,0.2); }
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-3px); box-shadow: 0 5px 20px rgba(0,0,0,0.3); }
.back-to-top span { color: #fff; font-size: 20px; }

/* ===== 手机端底部悬浮电话 ===== */
.mobile-call { display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 1000; background: linear-gradient(135deg, #27ae60, #2ecc71); padding: 12px 20px; box-shadow: 0 -3px 20px rgba(0,0,0,0.15); }
.mobile-call a { display: flex; align-items: center; justify-content: center; gap: 10px; color: #fff; font-size: 18px; font-weight: bold; }

/* ===== 多页面新增样式 ===== */
/* 面包屑导航 */
.page-nav { background: #f0f4f8; padding: 12px 0; border-bottom: 1px solid #e0e0e0; }
.page-nav-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; font-size: 14px; color: #888; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.page-nav a { color: #2980b9; transition: color 0.3s; }
.page-nav a:hover { color: #1a5276; text-decoration: underline; }
.page-nav-sep { color: #ccc; }
.page-nav-current { color: #333; font-weight: 500; }

/* 产品详情页 */
.product-detail { max-width: 1000px; margin: 0 auto; }
.product-detail-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; margin-bottom: 40px; align-items: start; }
.product-detail-hero .hero-img { width: 100%; border-radius: 15px; box-shadow: 0 5px 25px rgba(0,0,0,0.1); }
.product-detail-hero .hero-info h2 { color: #1a5276; font-size: 26px; margin-bottom: 15px; }
.product-detail-hero .hero-info p { color: #555; font-size: 15px; line-height: 1.8; margin-bottom: 15px; }
.product-detail-hero .hero-info .price-tag { display: inline-block; background: linear-gradient(135deg, #e74c3c, #c0392b); color: #fff; padding: 8px 20px; border-radius: 25px; font-size: 18px; font-weight: bold; margin: 10px 0; }
.product-detail-hero .hero-info .cta-btn { display: inline-block; background: linear-gradient(135deg, #2980b9, #2471a3); color: #fff; padding: 12px 35px; border-radius: 30px; font-size: 16px; font-weight: bold; text-decoration: none; box-shadow: 0 4px 15px rgba(41,128,185,0.3); transition: transform 0.3s; margin-top: 10px; }
.product-detail-hero .hero-info .cta-btn:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(41,128,185,0.4); }
.product-detail-section { margin-bottom: 40px; }
.product-detail-section h3 { color: #1a5276; font-size: 22px; margin-bottom: 20px; padding-left: 15px; border-left: 4px solid #2980b9; }
.product-detail-section p { color: #555; font-size: 15px; line-height: 1.8; margin-bottom: 12px; }

/* 参数表 */
.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; background: #fff; box-shadow: 0 2px 12px rgba(0,0,0,0.06); border-radius: 10px; overflow: hidden; }
.spec-table th { background: linear-gradient(135deg, #1a5276, #2980b9); color: #fff; padding: 12px 15px; text-align: left; font-weight: 600; }
.spec-table td { padding: 11px 15px; border-bottom: 1px solid #ecf0f1; color: #444; line-height: 1.5; }
.spec-table tr:last-child td { border-bottom: none; }
.spec-table tr:nth-child(even) td { background: #f8f9fa; }
.spec-table .spec-name { color: #1a5276; font-weight: 600; width: 30%; }

/* 首页产品导航卡片 */
.product-nav-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 25px; max-width: 1200px; margin: 0 auto; }
.product-nav-card { background: #fff; border-radius: 15px; overflow: hidden; box-shadow: 0 3px 15px rgba(0,0,0,0.06); transition: transform 0.3s, box-shadow 0.3s; border: 1px solid #e8e8e8; text-decoration: none; color: inherit; display: block; }
.product-nav-card:hover { transform: translateY(-8px); box-shadow: 0 12px 35px rgba(0,0,0,0.12); }
.product-nav-card .card-img { width: 100%; height: 220px; object-fit: cover; display: block; }
.product-nav-card .card-body { padding: 25px; }
.product-nav-card .card-body h3 { color: #1a5276; font-size: 20px; margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.product-nav-card .card-body p { color: #555; font-size: 14px; line-height: 1.7; margin-bottom: 15px; }
.product-nav-card .card-tags { margin-bottom: 15px; }
.product-nav-card .card-tag { display: inline-flex; align-items: center; gap: 5px; background: #e8f6f3; color: #1a5276; padding: 4px 10px; border-radius: 15px; font-size: 12px; margin: 3px 3px 3px 0; }
.product-nav-card .view-detail { display: inline-block; background: linear-gradient(135deg, #2980b9, #2471a3); color: #fff; padding: 10px 30px; border-radius: 25px; font-size: 14px; font-weight: bold; transition: background 0.3s; }
.product-nav-card:hover .view-detail { background: linear-gradient(135deg, #1a5276, #2980b9); }

/* 发货实拍图片网格 */
.delivery-photos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; max-width: 1000px; margin: 0 auto; }
.delivery-photos > div { overflow: hidden; border-radius: 12px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); }
.delivery-photos img { width: 100%; display: block; transition: transform 0.3s; }
.delivery-photos > div:hover img { transform: scale(1.05); }
@media (max-width: 768px) { .delivery-photos { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .delivery-photos { grid-template-columns: 1fr; } }

/* ===== 移动端适配 ===== */
@media (max-width: 768px) {
    .banner h1 { font-size: 26px; }
    .banner h2 { font-size: 16px; }
    .banner .phone-big { font-size: 26px; }
    .banner .tags { gap: 8px; }
    .banner .tag { font-size: 12px; padding: 6px 14px; }
    /* 汉堡菜单显示 */
    .nav-toggle { display: flex; }
    .nav-phone { display: none; }
    /* 移动端导航菜单 */
    .nav-links {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, #1a5276, #2471a3);
        flex-direction: column;
        gap: 0;
        padding: 10px 0;
        box-shadow: 0 5px 20px rgba(0,0,0,0.2);
        z-index: 100;
        max-height: calc(100vh - 60px);
        overflow-y: auto;
    }
    .nav-links.open { display: flex; }
    .nav-links a {
        color: #fff;
        font-size: 16px;
        padding: 14px 25px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        transition: background 0.2s;
    }
    .nav-links a:hover, .nav-links a:active {
        background: rgba(255,255,255,0.1);
        color: #f9e79f;
    }
    .nav-links a::after { display: none; }
    .nav-inner { height: 55px; }
    .nav-logo { font-size: 17px; }
    .about-grid { grid-template-columns: 1fr; }
    .product-grid { grid-template-columns: 1fr; }
    .trust-grid { grid-template-columns: repeat(2, 1fr); gap: 15px; }
    .trust-item .number { font-size: 32px; }
    .why-grid { grid-template-columns: repeat(2, 1fr); gap: 15px; }
    .why-card { padding: 20px 15px; }
    .why-card .icon { font-size: 36px; }
    .why-card h3 { font-size: 15px; }
    .why-card p { font-size: 12px; }
    .phone-huge { font-size: 28px; }
    .contact-box { padding: 30px 20px; border-radius: 15px; }
    .contact-box h3 { font-size: 22px; }
    .mobile-call { display: block; }
    .back-to-top { bottom: 80px; right: 15px; width: 45px; height: 45px; }
    .process-steps { flex-wrap: wrap; gap: 20px; justify-content: center; }
    .process-steps::before { display: none; }
    .process-step { flex: 0 0 45%; }
    .footer-content { grid-template-columns: 1fr; gap: 25px; }
    .section { padding: 40px 15px; }
    .section-title { font-size: 22px; }
    .product-detail-hero { grid-template-columns: 1fr; }
    .product-nav-cards { grid-template-columns: 1fr; }
    .page-nav-inner { font-size: 13px; }
    .compare-table, .spec-table { font-size: 12px; }
    .compare-table th, .spec-table th { padding: 8px 10px; }
    .compare-table td, .spec-table td { padding: 8px 10px; }
}
@media (max-width: 480px) {
    .why-grid { grid-template-columns: 1fr; }
    .trust-grid { grid-template-columns: 1fr 1fr; }
    .banner { padding: 50px 15px 50px; }
    .banner h1 { font-size: 22px; }
    .banner h2 { font-size: 14px; }
    .banner .phone-big { font-size: 22px; }
    .product-nav-card .card-img { height: 180px; }
    .faq-item { padding: 15px 18px; }
    .faq-item h4 { font-size: 14px; }
    .faq-item p { font-size: 13px; padding-left: 24px; }
    .contact-box h3 { font-size: 20px; }
    .phone-huge { font-size: 24px; }
}

/* ===== 移动端交互优化 ===== */
@media (max-width: 768px) {
    * { -webkit-tap-highlight-color: transparent; }
    a, button, .cta-btn, .view-detail, .nav-toggle {
        touch-action: manipulation;
    }
    .product-nav-card .view-detail,
    .product-detail-hero .hero-info .cta-btn {
        padding: 14px 30px;
        font-size: 15px;
    }
    .back-to-top {
        bottom: 75px;
    }
    /* 防止移动端输入框缩放 */
    input, textarea, select {
        font-size: 16px !important;
    }
    /* 表格横向滚动优化 */
    .compare-table-wrap, .spec-table {
        -webkit-overflow-scrolling: touch;
    }
    /* 图片懒加载占位 */
    img {
        max-width: 100%;
        height: auto;
    }
    /* 安全区域适配 */
    .mobile-call {
        padding-bottom: max(12px, env(safe-area-inset-bottom));
    }
}

/* ====== 资讯/文章页 ====== */
.breadcrumb { max-width: 1200px; margin: 15px auto 0; padding: 0 20px; font-size: 14px; color: #666; }
.breadcrumb a { color: #2980b9; text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.article-page { max-width: 900px; margin: 20px auto; padding: 30px; background: #fff; border-radius: 12px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
.article-page h1 { font-size: 28px; color: #1a5276; margin-bottom: 15px; line-height: 1.4; }
.article-meta { display: flex; gap: 20px; font-size: 14px; color: #888; padding-bottom: 15px; border-bottom: 2px solid #f0f0f0; margin-bottom: 25px; flex-wrap: wrap; }
.article-content { line-height: 1.8; font-size: 16px; color: #333; }
.article-content h2 { font-size: 22px; color: #1a5276; margin: 30px 0 15px; padding-left: 12px; border-left: 4px solid #2980b9; }
.article-content h3 { font-size: 18px; color: #2c3e50; margin: 20px 0 10px; }
.article-content p { margin-bottom: 15px; }
.article-content ul { margin: 10px 0 15px 20px; }
.article-content li { margin-bottom: 8px; line-height: 1.7; }
.article-content strong { color: #1a5276; }
.article-cta { background: linear-gradient(135deg, #e8f4f8, #d4eaf7); border-radius: 10px; padding: 20px; margin: 30px 0; text-align: center; border: 2px solid #2980b9; }
.article-cta p { margin: 5px 0; font-size: 16px; }
.article-cta a { color: #2980b9; font-weight: bold; }
.page-subtitle { text-align: center; color: #666; font-size: 16px; margin-bottom: 30px; }
.news-list { max-width: 900px; margin: 0 auto; }
.news-item { display: block; background: #fff; border-radius: 10px; padding: 25px; margin-bottom: 20px; text-decoration: none; color: #333; box-shadow: 0 2px 8px rgba(0,0,0,0.06); transition: all 0.3s; border: 1px solid #eee; }
.news-item:hover { transform: translateY(-3px); box-shadow: 0 5px 20px rgba(0,0,0,0.12); border-color: #2980b9; }
.news-tag { display: inline-block; background: #2980b9; color: #fff; padding: 3px 12px; border-radius: 20px; font-size: 12px; margin-bottom: 10px; }
.news-item h2 { font-size: 20px; color: #1a5276; margin-bottom: 10px; }
.news-item p { color: #666; line-height: 1.6; font-size: 14px; }
.news-date { color: #999; font-size: 13px; }
.map-section { max-width: 900px; margin: 30px auto; padding: 30px; background: #fff; border-radius: 12px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
.map-section h2 { font-size: 24px; color: #1a5276; margin-bottom: 10px; }
.baidu-map { border-radius: 12px; overflow: hidden; margin-top: 15px; }
/* ====== 浮动咨询按钮 ====== */
.float-consult { position: fixed; bottom: 20px; right: 20px; z-index: 100; display: flex; flex-direction: column; gap: 10px; }
.float-consult-btn { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-radius: 30px; text-decoration: none; font-size: 14px; box-shadow: 0 4px 15px rgba(0,0,0,0.15); transition: all 0.3s; white-space: nowrap; }
.float-consult-btn.phone { background: linear-gradient(135deg, #e74c3c, #c0392b); color: #fff; }
.float-consult-btn.info { background: linear-gradient(135deg, #2980b9, #1a5276); color: #fff; }
.float-consult-btn:hover { transform: scale(1.05); box-shadow: 0 6px 20px rgba(0,0,0,0.25); }
.float-consult-btn span:first-child { font-size: 18px; }
.float-consult-label { font-weight: bold; }
@media (max-width: 768px) {
    .float-consult-btn { padding: 10px 14px; font-size: 13px; }
    .float-consult-label { display: none; }
    .float-consult-btn span:first-child { font-size: 22px; }
    .float-consult { bottom: 80px; right: 15px; }
    .article-page { padding: 20px 15px; margin: 10px; }
    .article-page h1 { font-size: 22px; }
    .article-content h2 { font-size: 18px; }
    .news-item { padding: 18px; }
    .news-item h2 { font-size: 17px; }
    .map-section { padding: 20px 15px; margin: 15px 10px; }
    .baidu-map iframe { height: 300px; }
    .breadcrumb { padding: 0 15px; }
}

/* ===== AI FAQ 页面样式 ===== */
.faq-ai-section {
    margin: 30px 0;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
}

.faq-ai-section h2 {
    color: #1a5276;
    font-size: 1.4em;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #3498db;
}

.faq-ai-item {
    background: #fff;
    margin: 15px 0;
    padding: 20px;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: box-shadow 0.3s;
}

.faq-ai-item:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.faq-ai-item h3 {
    color: #2c3e50;
    font-size: 1.1em;
    margin-bottom: 10px;
    font-weight: 600;
}

.faq-ai-item p {
    color: #555;
    line-height: 1.8;
    margin-bottom: 10px;
}

.faq-ai-item ul {
    color: #555;
    line-height: 1.8;
    padding-left: 20px;
}

.faq-ai-item li {
    margin-bottom: 5px;
}

.faq-ai-item strong {
    color: #e74c3c;
}

@media (max-width: 768px) {
    .faq-ai-section {
        padding: 15px;
        margin: 20px 0;
    }
    
    .faq-ai-item {
        padding: 15px;
        margin: 10px 0;
    }
    
    .faq-ai-section h2 {
        font-size: 1.2em;
    }
    
    .faq-ai-item h3 {
        font-size: 1em;
    }
}


/* ===== 产品页H1样式 ===== */
.product-h1 {
    color: #1a5276;
    font-size: 1.8em;
    font-weight: 700;
    margin: 20px 0 15px;
    padding-bottom: 10px;
    border-bottom: 3px solid #3498db;
}

@media (max-width: 768px) {
    .product-h1 {
        font-size: 1.4em;
    }
}



/* === 产品页增强：应用案例、信任保障、选型指南、耐腐蚀表 === */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 15px;
}
.case-card {
    background: linear-gradient(135deg, #f8fcfb, #f0f7fa);
    border-left: 4px solid #2471a3;
    border-radius: 0 12px 12px 0;
    padding: 18px 20px;
    transition: transform 0.2s, box-shadow 0.2s;
}
.case-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(36, 113, 163, 0.15);
}
.case-card .case-tag {
    display: inline-block;
    background: #2471a3;
    color: #fff;
    font-size: 12px;
    padding: 2px 10px;
    border-radius: 10px;
    margin-bottom: 8px;
}
.case-card .case-title {
    font-weight: bold;
    color: #1a5276;
    font-size: 15px;
    margin-bottom: 6px;
}
.case-card .case-desc {
    font-size: 13px;
    color: #555;
    line-height: 1.6;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 15px;
    margin-top: 15px;
}
.trust-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: #f8fcfb;
    border: 1px solid #e3f2fd;
    border-radius: 12px;
    padding: 14px 16px;
}
.trust-item .trust-icon {
    font-size: 28px;
    flex-shrink: 0;
}
.trust-item .trust-text h4 {
    font-size: 14px;
    color: #1a5276;
    margin: 0 0 4px 0;
}
.trust-item .trust-text p {
    font-size: 12px;
    color: #666;
    margin: 0;
    line-height: 1.5;
}

.guide-steps {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 15px;
}
.guide-step {
    flex: 1;
    min-width: 200px;
    background: linear-gradient(135deg, #1a5276, #2471a3);
    color: #fff;
    border-radius: 12px;
    padding: 16px 18px;
    position: relative;
}
.guide-step .step-num {
    position: absolute;
    top: -10px;
    left: 16px;
    background: #f9e79f;
    color: #1a5276;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
}
.guide-step h4 {
    font-size: 14px;
    margin: 8px 0 6px 0;
}
.guide-step p {
    font-size: 12px;
    opacity: 0.9;
    line-height: 1.5;
    margin: 0;
}

.chem-table th {
    background: #1a5276 !important;
    color: #fff !important;
    font-size: 13px;
}
.chem-table .chem-safe {
    color: #27ae60;
    font-weight: bold;
}
.chem-table .chem-warn {
    color: #e67e22;
    font-weight: bold;
}
.chem-table .chem-danger {
    color: #e74c3c;
    font-weight: bold;
}

@media (max-width: 768px) {
    .case-grid, .trust-grid {
        grid-template-columns: 1fr;
    }
    .guide-steps {
        flex-direction: column;
    }
    .guide-step {
        min-width: 100%;
    }
}

/* ===== 询价快通道 (Conversion) ===== */
.inquiry-section {
    background: linear-gradient(135deg, #0d3b54 0%, #1a5276 50%, #2471a3 100%);
    color: #fff;
    padding: 50px 20px;
    text-align: center;
}
.inquiry-section .section-title {
    color: #fff;
}
.inquiry-section .section-title .icon {
    font-size: 28px;
}
.inquiry-hooks {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    max-width: 900px;
    margin: 25px auto;
    justify-content: center;
}
.inquiry-hook {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 12px;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    backdrop-filter: blur(5px);
    transition: transform 0.3s, background 0.3s;
}
.inquiry-hook:hover {
    transform: translateY(-3px);
    background: rgba(255,255,255,0.2);
}
.inquiry-hook .hook-icon {
    font-size: 22px;
    flex-shrink: 0;
}
.inquiry-hook strong {
    color: #f9e79f;
}
.inquiry-box {
    max-width: 600px;
    margin: 30px auto 0;
    background: rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 30px;
    border: 1px solid rgba(255,255,255,0.15);
}
.inquiry-box h3 {
    font-size: 22px;
    margin-bottom: 10px;
}
.inquiry-box p {
    font-size: 14px;
    opacity: 0.85;
    margin-bottom: 20px;
}
.inquiry-btn {
    display: inline-block;
    background: linear-gradient(135deg, #f9e79f, #f4d03f);
    color: #1a5276;
    font-size: 22px;
    font-weight: bold;
    padding: 16px 50px;
    border-radius: 50px;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 15px rgba(249,231,159,0.4);
}
.inquiry-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(249,231,159,0.6);
}
.inquiry-cta-note {
    margin-top: 15px;
    font-size: 13px;
    opacity: 0.7;
}
.inquiry-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin-top: 20px;
    font-size: 13px;
    opacity: 0.8;
}
.inquiry-trust span {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ===== 产品页底部CTA ===== */
.product-cta {
    background: linear-gradient(135deg, #1a5276, #2471a3);
    color: #fff;
    border-radius: 16px;
    padding: 35px 30px;
    text-align: center;
    margin: 40px 0 20px;
}
.product-cta h3 {
    font-size: 24px;
    margin-bottom: 10px;
}
.product-cta p {
    font-size: 15px;
    opacity: 0.9;
    margin-bottom: 20px;
}
.product-cta .cta-phone {
    display: inline-block;
    background: linear-gradient(135deg, #f9e79f, #f4d03f);
    color: #1a5276;
    font-size: 26px;
    font-weight: bold;
    padding: 14px 40px;
    border-radius: 50px;
    transition: transform 0.3s;
}
.product-cta .cta-phone:hover {
    transform: scale(1.05);
}
.product-cta .cta-features {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    margin-top: 18px;
    font-size: 13px;
    opacity: 0.85;
}

@media (max-width: 768px) {
    .inquiry-hook {
        font-size: 13px;
        padding: 10px 14px;
    }
    .inquiry-box {
        padding: 20px 15px;
    }
    .inquiry-btn {
        font-size: 18px;
        padding: 14px 35px;
    }
    .product-cta {
        padding: 25px 15px;
    }
    .product-cta h3 {
        font-size: 20px;
    }
    .product-cta .cta-phone {
        font-size: 20px;
        padding: 12px 28px;
    }
}


/* ===== 工厂实力板块 ===== */
.factory-hero {
    background: linear-gradient(135deg, #0a1929 0%, #1a3a5c 50%, #1a5276 100%);
    color: #fff;
    padding: 60px 20px;
    position: relative;
    overflow: hidden;
}
.factory-hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at 80% 20%, rgba(100,180,255,0.15) 0%, transparent 50%);
}
.factory-hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}
.factory-hero h2 {
    font-size: 32px;
    text-align: center;
    margin-bottom: 10px;
    font-weight: 800;
    letter-spacing: 2px;
}
.factory-hero .hero-sub {
    text-align: center;
    font-size: 16px;
    opacity: 0.85;
    margin-bottom: 40px;
}
.factory-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}
.factory-stat {
    text-align: center;
    padding: 25px 15px;
    background: rgba(255,255,255,0.08);
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.15);
    transition: transform 0.3s;
}
.factory-stat:hover { transform: translateY(-5px); background: rgba(255,255,255,0.12); }
.factory-stat .stat-num {
    font-size: 42px;
    font-weight: 800;
    color: #58d4ff;
    line-height: 1;
    margin-bottom: 8px;
}
.factory-stat .stat-unit {
    font-size: 16px;
    color: #58d4ff;
    font-weight: 600;
}
.factory-stat .stat-label {
    font-size: 14px;
    opacity: 0.8;
    margin-top: 5px;
}

/* ===== 生产工艺板块 ===== */
.process-section {
    background: #f8f9fa;
    padding: 60px 20px;
}
.process-section .container {
    max-width: 1200px;
    margin: 0 auto;
}
.process-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-top: 35px;
}
.process-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: transform 0.3s, box-shadow 0.3s;
}
.process-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}
.process-card-header {
    padding: 25px 20px;
    color: #fff;
    text-align: center;
}
.process-card:nth-child(1) .process-card-header { background: linear-gradient(135deg, #1a5276, #2980b9); }
.process-card:nth-child(2) .process-card-header { background: linear-gradient(135deg, #1e8449, #27ae60); }
.process-card:nth-child(3) .process-card-header { background: linear-gradient(135deg, #b9770e, #f39c12); }
.process-card-header h3 { font-size: 22px; margin-bottom: 5px; }
.process-card-header p { font-size: 13px; opacity: 0.9; }
.process-card-body { padding: 25px 20px; }
.process-card-body ul { list-style: none; padding: 0; margin: 0; }
.process-card-body li {
    padding: 8px 0;
    border-bottom: 1px dashed #eee;
    font-size: 14px;
    color: #555;
}
.process-card-body li:last-child { border-bottom: none; }
.process-card-body li::before {
    content: '▸ ';
    color: #2980b9;
    font-weight: bold;
}

/* ===== 品质保障板块 ===== */
.quality-section {
    padding: 60px 20px;
    background: linear-gradient(180deg, #fff 0%, #f0f4f8 100%);
}
.quality-section .container {
    max-width: 1200px;
    margin: 0 auto;
}
.quality-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-top: 35px;
}
.quality-card {
    background: #fff;
    border-radius: 12px;
    padding: 30px 20px;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0,0,0,0.05);
    border-top: 4px solid #2980b9;
    transition: transform 0.3s;
}
.quality-card:hover { transform: translateY(-5px); }
.quality-card:nth-child(2) { border-top-color: #27ae60; }
.quality-card:nth-child(3) { border-top-color: #f39c12; }
.quality-card:nth-child(4) { border-top-color: #8e44ad; }
.quality-card .q-icon { font-size: 40px; margin-bottom: 12px; }
.quality-card h4 { color: #1a5276; font-size: 18px; margin-bottom: 8px; }
.quality-card p { font-size: 13px; color: #666; line-height: 1.6; }

/* ===== 行业应用板块 ===== */
.industry-section {
    padding: 60px 20px;
    background: #fff;
}
.industry-section .container {
    max-width: 1200px;
    margin: 0 auto;
}
.industry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
    margin-top: 35px;
}
.industry-card {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 25px 15px;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
}
.industry-card:hover {
    border-color: #2980b9;
    background: #fff;
    box-shadow: 0 5px 20px rgba(41,128,185,0.15);
}
.industry-card .i-icon { font-size: 36px; margin-bottom: 10px; }
.industry-card h4 { color: #1a5276; font-size: 16px; margin-bottom: 5px; }
.industry-card p { font-size: 12px; color: #888; }

/* ===== 工厂展示板块 ===== */
.factory-showcase {
    padding: 60px 20px;
    background: linear-gradient(135deg, #1a2a3a 0%, #0d1b2a 100%);
    color: #fff;
}
.factory-showcase .container {
    max-width: 1200px;
    margin: 0 auto;
}
.factory-showcase h2 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 10px;
}
.factory-showcase .showcase-sub {
    text-align: center;
    opacity: 0.7;
    margin-bottom: 35px;
    font-size: 15px;
}
.showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}
.showcase-item {
    background: rgba(255,255,255,0.06);
    border-radius: 12px;
    padding: 30px 25px;
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s;
}
.showcase-item:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(88,212,255,0.3);
}
.showcase-item .s-icon { font-size: 32px; margin-bottom: 12px; }
.showcase-item h4 { font-size: 18px; margin-bottom: 10px; color: #58d4ff; }
.showcase-item p { font-size: 14px; opacity: 0.8; line-height: 1.7; }
.showcase-item ul { list-style: none; padding: 0; margin: 10px 0 0; }
.showcase-item li { font-size: 13px; opacity: 0.7; padding: 3px 0; }
.showcase-item li::before { content: '✓ '; color: #27ae60; }

/* 移动端适配 */
@media (max-width: 768px) {
    .process-grid { grid-template-columns: 1fr; }
    .factory-hero h2 { font-size: 22px; }
    .factory-stat .stat-num { font-size: 32px; }
    .factory-hero { padding: 40px 15px; }
    .process-section, .quality-section, .industry-section, .factory-showcase { padding: 40px 15px; }
}

/* ===== 移动端全局优化 ===== */
@supports (overscroll-behavior: none) {
  body { overscroll-behavior-y: none; }
}
.section, .nav-inner, .footer-content, .trust-grid, .why-grid,
.product-grid, .product-nav-cards, .about-grid, .factory-hero-inner,
.process-section .container, .quality-section .container,
.industry-section .container, .factory-showcase .container,
.news-list, .article-page, .map-section, .faq-list,
.compare-table-wrap, .inquiry-section, .contact-box,
.page-nav-inner, .breadcrumb, .product-detail {
  max-width: 100%; word-wrap: break-word; overflow-wrap: break-word;
}
@media (max-width: 1024px) and (min-width: 769px) {
  .trust-grid { grid-template-columns: repeat(4, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .product-nav-cards { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(3, 1fr); }
  .nav-links { gap: 20px; }
  .nav-links a { font-size: 14px; }
}
@media (max-width: 360px) {
  .banner h1 { font-size: 18px; }
  .banner h2 { font-size: 12px; }
  .banner .phone-big { font-size: 18px; }
  .banner .tag { font-size: 11px; padding: 4px 10px; }
  .section-title { font-size: 18px; }
  .nav-logo { font-size: 14px; }
  .nav-logo img { height: 28px; }
  .phone-huge { font-size: 20px; }
  .contact-box h3 { font-size: 18px; }
  .inquiry-btn { font-size: 16px; padding: 12px 25px; }
  .product-cta .cta-phone { font-size: 18px; padding: 10px 20px; }
  .mobile-call a { font-size: 16px; }
}
/* cache-bust: v2-20260815 */