* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Noto Sans SC', sans-serif;
        }
        html {
            text-size-adjust: 100%;
            scroll-behavior: smooth;
        }
        :root {
            --main-color: #165DFF;
            --sub-color: #0F3A8A;
            --text-dark: #333333;
            --text-gray: #666666;
            --text-light: #999999;
            --bg-light: #F7F9FC;
            --bg-white: #FFFFFF;
            --border-color: #E5E6EB;
        }
        body {
            color: var(--text-dark);
            background-color: var(--bg-light);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: none;
            user-select: none;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }
        ul, li {
            list-style: none;
        }
        input, button {
            font-family: inherit;
            outline: none;
            border: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        .btn {
            display: inline-block;
            padding: 12px 30px;
            background-color: var(--main-color);
            color: #fff;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 500;
            text-align: center;
            box-shadow: 0 4px 15px rgba(22, 93, 255, 0.3);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn:hover {
            background-color: var(--sub-color);
            transform: translateY(-2px);
        }
        .btn-light {
            background-color: #fff;
            color: var(--main-color);
            border: 1px solid var(--main-color);
        }
        /* 头部导航修复 */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: var(--main-color);
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            z-index: 999;
            padding: 8px 0;
        }
        .logo-container {
            text-align: center;
            padding: 5px 0 10px;
            border-bottom: 1px solid rgba(255,255,255,0.2);
            margin-bottom: 8px;
        }
        /* 加大Logo和文字 */
        .logo {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            line-height: 1.6;
        }
        .logo i {
            font-size: 34px;
            color: #fff;
        }
        .nav-container {
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 2px 0;
        }
        .nav-menu {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            width: 100%;
            padding: 0 5px;
        }
        .nav-menu li a {
            font-size: 14px;
            font-weight: 500;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 2px 0;
            white-space: nowrap;
        }
        .nav-menu li a:hover {
            color: #FFD700;
        }
        /* banner 修复 */
        .banner {
            margin-top: 120px;
            min-height: 500px;
            height: auto;
            padding: 80px 0;
            background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.7)), url('pic.jpg');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            text-align: center;
            width: 100%;
        }
        .banner-content {
            width: 100%;
            max-width: 900px;
            padding: 0 20px;
            margin: 0 auto;
        }
        .banner h1 {
            font-size: 36px;
            margin-bottom: 20px;
            line-height: 1.3;
            word-wrap: break-word;
        }
        .banner p {
            font-size: 16px;
            margin-bottom: 30px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .banner-tag {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 30px;
            justify-content: center;
        }
        .banner-tag span {
            padding: 6px 15px;
            background-color: rgba(22, 93, 255, 0.8);
            border-radius: 50px;
            font-size: 13px;
            white-space: nowrap;
        }
        .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-title h2 {
            font-size: 28px;
            color: var(--text-dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background-color: var(--main-color);
        }
        .section-title p {
            font-size: 15px;
            color: var(--text-gray);
            max-width: 700px;
            margin: 0 auto;
            padding: 0 10px;
        }
        /* 服务模块 */
        .service {
            padding: 60px 0;
            background-color: var(--bg-white);
        }
        .service-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .service-item {
            background-color: var(--bg-light);
            border-radius: 15px;
            padding: 30px 20px;
            text-align: center;
            transition: all 0.3s ease;
            border: 1px solid var(--border-color);
        }
        .service-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            border-color: var(--main-color);
        }
        .service-item i {
            font-size: 40px;
            color: var(--main-color);
            margin-bottom: 20px;
        }
        .service-item h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--text-dark);
        }
        .service-item p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.7;
        }
        /* 回收品类 */
        .recycle {
            padding: 60px 0;
            background-color: var(--bg-light);
        }
        .recycle-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .recycle-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }
        .recycle-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .recycle-img {
            height: 180px;
            overflow: hidden;
        }
        .recycle-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: all 0.5s ease;
        }
        .recycle-card:hover .recycle-img img {
            transform: scale(1.1);
        }
        .recycle-info {
            padding: 20px 15px;
        }
        .recycle-info h3 {
            font-size: 17px;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .recycle-info p {
            font-size: 13px;
            color: var(--text-gray);
            line-height: 1.5;
        }
        /* 服务区域 */
        .area {
            padding: 60px 0;
            background-color: var(--bg-white);
            background: linear-gradient(to right, #F7F9FC, #EEF2FF);
        }
        .area-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 30px;
        }
        .area-left,
        .area-right {
            flex: 1;
            min-width: 300px;
        }
        .area-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-top: 20px;
        }
        .area-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 15px;
            background-color: #fff;
            border-radius: 10px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
            cursor: pointer;
            border: 2px solid transparent;
        }
        .area-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(22, 93, 255, 0.15);
            border-color: var(--main-color);
            background-color: #F0F7FF;
        }
        .area-item i {
            color: var(--main-color);
            font-size: 18px;
        }
        .area-item h4 {
            font-size: 15px;
            font-weight: 500;
        }
        /* 回收流程 */
        .process {
            padding: 60px 0;
            background-color: var(--bg-light);
        }
        .process-container {
            position: relative;
            width: 100%;
            max-width: 1000px;
            margin: 0 auto;
        }
        .process-line {
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 2px;
            background-color: var(--main-color);
            opacity: 0.6;
            z-index: 1;
        }
        .process-step {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 15px;
            position: relative;
            z-index: 2;
        }
        .step-item {
            flex: 1;
            min-width: 150px;
            text-align: center;
            padding: 0 5px;
        }
        .step-icon {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background-color: var(--main-color);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 15px;
            font-size: 26px;
            box-shadow: 0 5px 15px rgba(22, 93, 255, 0.2);
        }
        .step-item h4 {
            font-size: 15px;
            margin-bottom: 5px;
        }
        .step-item p {
            font-size: 13px;
            color: var(--text-gray);
            line-height: 1.4;
        }
        /* 优势 */
        .advantage {
            padding: 60px 0;
            background-color: var(--bg-white);
        }
        .adv-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .adv-card {
            padding: 25px 20px;
            background-color: var(--bg-light);
            border-radius: 12px;
            border-left: 4px solid var(--main-color);
            transition: all 0.3s ease;
        }
        .adv-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.08);
        }
        .adv-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .adv-card p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.7;
        }
        /* 资质 */
        .certificate {
            padding: 60px 0;
            background-color: var(--bg-light);
        }
        .cert-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 30px;
        }
        .cert-item {
            background-color: #fff;
            padding: 25px 15px;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 3px 15px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }
        .cert-item:hover {
            transform: translateY(-6px);
            box-shadow: 0 10px 25px rgba(22,93,255,0.15);
            border: 1px solid var(--main-color);
            background-color: #f0f7ff;
        }
        .cert-item i {
            font-size: 36px;
            color: var(--main-color);
            margin-bottom: 12px;
            transition: all 0.3s ease;
        }
        .cert-item:hover i {
            transform: scale(1.15);
        }
        .cert-item h3 {
            font-size: 17px;
            margin-bottom: 8px;
        }
        .cert-item p {
            font-size: 13px;
            color: var(--text-gray);
        }
        /* 客户评价 */
        .testimonial {
            padding: 60px 0;
            background-color: var(--bg-white);
        }
        .testi-slider {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .testi-item {
            background-color: var(--bg-light);
            padding: 25px 20px;
            border-radius: 15px;
            border-top: 3px solid var(--main-color);
            transition: all 0.3s ease;
        }
        .testi-item:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 25px rgba(0,0,0,0.12);
            border-top: 3px solid #ff6b35;
            background-color: #ffffff;
        }
        .testi-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 15px;
        }
        .testi-avatar {
            width: 55px;
            height: 55px;
            border-radius: 50%;
            background-color: #E0E9FF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--main-color);
        }
        .testi-name h4 {
            font-size: 15px;
            font-weight: 600;
        }
        .testi-name p {
            font-size: 13px;
            color: var(--text-light);
        }
        .testi-content {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.6;
        }
        .testi-rating {
            margin-top: 12px;
            color: #FFD700;
            font-size: 18px;
        }
        /* 详细介绍 */

        .intro {
            padding: 50px 0;
            background-color: var(--bg-light);
        }
        .intro-content {
            background-color: #fff;
            padding: 30px 20px;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
        }
        .intro-img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            border-radius: 12px;
            margin-bottom: 20px;
        }
        .intro-content h3 {
            font-size: 22px;
            color: var(--main-color);
            margin-bottom: 15px;
            text-align: center;
        }
        .intro-content p {
            font-size: 15px;
            color: var(--text-gray);
            margin-bottom: 15px;
            text-align: justify;
            line-height: 1.7;
        }
        /* 联系 */
        .contact {
            padding: 60px 0;
            background-color: var(--main-color);
            color: #fff;
            text-align: center;
        }
        .contact h2 {
            font-size: 28px;
            margin-bottom: 15px;
        }
        .contact p {
            font-size: 16px;
            margin-bottom: 20px;
            padding: 0 10px;
        }
        .contact-info {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 25px;
            margin-bottom: 30px;
        }
        .contact-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .contact-item i {
            font-size: 26px;
        }
        .contact-item div h4 {
            font-size: 16px;
            margin-bottom: 3px;
        }
        .contact-item div p {
            font-size: 15px;
            margin: 0;
        }
        /* 门店信息 */
        .store-info {
            background: rgba(255,255,255,0.15);
            padding: 20px;
            border-radius: 12px;
            margin: 25px auto;
            max-width: 800px;
            text-align: left;
        }
        .store-item {
            margin-bottom: 12px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .store-item:last-child {
            margin-bottom: 0;
        }
        .store-item i {
            color: #FFD700;
            margin-top: 5px;
            font-size: 16px;
        }
        /* 底部 */
        .footer {
            background-color: #1A1A1A;
            color: #fff;
            padding: 50px 0 20px;
        }
        .footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-col {
            flex: 1;
            min-width: 220px;
        }
        .footer-col h3 {
            font-size: 18px;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background-color: var(--main-color);
        }
        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 14px;
            color: #ccc;
            transition: all 0.3s ease;
        }
        .footer-col ul li:hover {
            color: var(--main-color);
            transform: translateX(5px);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #333;
            color: #999;
            font-size: 13px;
            line-height: 1.8;
        }
        /* 移动端底部导航 */
        .mobile-footer-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 55px;
            background-color: var(--main-color);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 998;
            box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
        }
        .mobile-footer-bar a {
            color: #fff;
            font-size: 16px;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .mobile-footer-bar i {
            font-size: 20px;
        }
        /* 返回顶部 */
        .back-top {
            position: fixed;
            bottom: 70px;
            right: 15px;
            width: 45px;
            height: 45px;
            background-color: var(--main-color);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            cursor: pointer;
            z-index: 997;
            box-shadow: 0 3px 10px rgba(22,93,255,0.3);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }
        .back-top.show {
            opacity: 1;
            visibility: visible;
        }

        /* 完美响应式适配 */
        @media (max-width: 1024px) {
            .recycle-grid { grid-template-columns: repeat(3, 1fr); }
            .adv-grid { grid-template-columns: repeat(2, 1fr); }
            .cert-grid { grid-template-columns: repeat(2, 1fr); }
            .testi-slider { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .logo { font-size: 24px; }
            .logo i { font-size: 26px; }
            .nav-menu { gap: 8px 12px; padding: 0 5px; }
            .nav-menu li a { font-size: 14px; }
            
            .banner { margin-top: 110px; padding: 60px 0; }
            .banner h1 { font-size: 26px; }
            
            .service-list { grid-template-columns: repeat(2, 1fr); }
            .recycle-grid { grid-template-columns: repeat(2, 1fr); }
            .area-list { grid-template-columns: repeat(2, 1fr); }
            .adv-grid { grid-template-columns: 1fr; }
            .cert-grid { grid-template-columns: repeat(2, 1fr); }
            .testi-slider { grid-template-columns: repeat(2, 1fr); }
            .footer-col { min-width: 45%; }
            
            .process-line { display: none; }
            .process-step { justify-content: center; }
            .step-item { margin-bottom: 20px; min-width: 130px; }
            
            .mobile-footer-bar { display: flex; }
            body { padding-bottom: 60px; }
        }

        @media (max-width: 480px) {
            .service-list, .recycle-grid { grid-template-columns: repeat(2, 1fr); }
            .area-list { grid-template-columns: repeat(2, 1fr); }
            .cert-grid { grid-template-columns: repeat(2, 1fr); }
            .section-title h2 { font-size: 24px; }
            .banner h1 { font-size: 22px; }
            .banner p { font-size: 14px; }
        }