* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", sans-serif;
            scroll-behavior: smooth;
        }

        body {
            background: url(https://www.lt518.com/theme/plant/image/1076-1920x1080.jpg) no-repeat center fixed;
            background-size: cover;
            position: relative;
        }
        body::before {
            content: '';
            position: fixed;
            left:0; top:0; width:100%; height:100%;
            background: rgba(255,255,255,0.92);
            z-index: -1;
        }

        .right-nav {
            position: fixed;
            right: 24px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 999;
            padding: 10px 0;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .nav-item {
            position: relative;
            width: 36px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: flex-end;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .nav-item::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #ccc;
            transition: all 0.3s;
        }
        .nav-item:hover::before,
        .nav-item.active::before {
            background: #E53E3E;
            transform: scale(1.6);
        }
        .nav-item::after {
            content: attr(data-text);
            position: absolute;
            right: 18px;
            background: #E53E3E;
            color: #fff;
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 4px;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transform: translateX(10px);
            transition: all 0.25s ease;
        }
        .nav-item:hover::after {
            opacity: 1;
            transform: translateX(0);
            right: 24px;
        }

        .banner {
            width: 100vw;
            height: 100vh;
            background: url('https://www.lt518.com/theme/plant/image/201904040223012561.jpg') no-repeat center;
            background-size: cover;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            position: relative;
            text-align: center;
        }
        .banner::before {
            content: '';
            position: absolute;
            left:0; top:0;
            width:100%; height:100%;
            background: rgba(0,0,0,0.5);
        }
        .banner .container {
            position: relative;
            z-index: 2;
            max-width: 1200px;
            padding: 0 20px;
            width: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
        }
        .banner h1 {
            font-size: 56px;
            margin-bottom:25px;
            line-height:1.3;
            text-align: center;
        }
        .banner p {
            font-size: 20px;
            max-width: 650px;
            margin:0 auto 40px;
            line-height:1.7;
            text-align: center;
        }
        .banner-btn {
            display: inline-block;
            padding:0 50px;
            height:56px;
            line-height:56px;
            background:#E53E3E;
            color:#fff;
            border-radius:4px;
            font-size:17px;
            text-decoration:none;
            transition:0.3s;
        }
        .banner-btn:hover {
            background:#C53030;
        }

        .about {
            max-width: 1200px;
            margin: 0 auto;
            padding: 80px 20px;
            display: flex;
            align-items: center;
            gap: 60px;
        }
        .about-img {
            flex: 0 0 500px;
        }
        .about-img img {
            width: 100%;
            height: 333px;
            object-fit: cover;
            border-radius: 8px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        .about-text {
            flex: 1;
        }
        .about-text h2 {
            font-size: 32px;
            color: #1D2129;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 15px;
        }
        .about-text h2::after {
            content: '';
            width: 50px;
            height: 3px;
            background: #E53E3E;
            position: absolute;
            left: 0;
            bottom: 0;
        }
        .about-text p {
            font-size: 16px;
            line-height: 1.9;
            color: #4E5969;
            margin-bottom: 15px;
        }

        .about-area {
            font-size: 16px;
            line-height: 1.9;
            color: #4E5969;
            margin-bottom: 15px;
        }

        .service {
            background: #F7F8FA;
            padding: 80px 20px;
        }
        .service-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .service h2 {
            text-align: center;
            font-size: 32px;
            color: #1D2129;
            margin-bottom: 50px;
            position: relative;
            padding-bottom: 15px;
        }
        .service h2::after {
            content: '';
            width: 50px;
            height: 3px;
            background: #E53E3E;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 0;
        }
        .service-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .service-item {
            width: calc(25% - 15px);
            background: #fff;
            padding: 25px;
            border-radius: 8px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            transition: 0.3s;
            border: 1px solid transparent;
        }
        .service-item:hover {
            transform: translateY(-5px);
            border-color: #E53E3E;
        }
        .service-item h3 {
            font-size: 19px;
            color: #1D2129;
            margin-bottom: 15px;
        }
        .service-item p {
            font-size: 15px;
            line-height: 1.8;
            color: #4E5969;
        }

        .cert {
            padding: 80px 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .cert h2 {
            text-align: center;
            font-size: 32px;
            color: #1D2129;
            margin-bottom: 50px;
            position: relative;
            padding-bottom: 15px;
        }
        .cert h2::after {
            content: '';
            width: 50px;
            height: 3px;
            background: #E53E3E;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 0;
        }
        .cert-slider {
            overflow: hidden;
            position: relative;
        }
        .cert-wrap {
            display: flex;
            width: max-content;
            animation: slide 25s linear infinite;
        }
        .cert-item {
            width: 260px;
            margin: 0 15px;
        }
        .cert-item img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            border-radius: 6px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        }
        @keyframes slide {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }
        .cert-slider:hover .cert-wrap {
            animation-play-state: paused;
        }

        .case {
            background: #F7F8FA;
            padding: 80px 20px;
        }
        .case-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .case h2 {
            text-align: center;
            font-size: 32px;
            color: #1D2129;
            margin-bottom: 50px;
            position: relative;
            padding-bottom: 15px;
        }
        .case h2::after {
            content: '';
            width: 50px;
            height: 3px;
            background: #E53E3E;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 0;
        }
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .case-item {
            background: #fff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            transition: 0.3s;
        }
        .case-item:hover {
            transform: translateY(-6px);
        }
        .case-img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }
        .case-info {
            padding: 25px;
        }
        .case-info h3 {
            font-size: 18px;
            color: #1D2129;
            margin-bottom: 8px;
        }
        .case-info p {
            font-size: 14px;
            color: #4E5969;
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .case-tag {
            display: inline-block;
            font-size: 12px;
            color: #E53E3E;
            background: #FEE2E2;
            padding: 3px 8px;
            border-radius: 4px;
            margin-right: 6px;
            margin-bottom: 6px;
        }

        .process {
            background: #F7F8FA;
            padding: 80px 20px;
        }
        .process-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .process h2 {
            text-align: center;
            font-size: 32px;
            color: #1D2129;
            margin-bottom: 50px;
            position: relative;
            padding-bottom: 15px;
        }
        .process h2::after {
            content: '';
            width: 50px;
            height: 3px;
            background: #E53E3E;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 0;
        }
        .process-steps {
            display: flex;
            justify-content: space-between;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 30px;
            left: 5%;
            right: 5%;
            height: 2px;
            background: #E5E6EB;
            z-index: 1;
        }
        .process-step {
            position: relative;
            z-index: 2;
            text-align: center;
            width: 14%;
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 0.6s ease forwards;
        }
        .process-step:nth-child(1) { animation-delay: 0.1s; }
        .process-step:nth-child(2) { animation-delay: 0.2s; }
        .process-step:nth-child(3) { animation-delay: 0.3s; }
        .process-step:nth-child(4) { animation-delay: 0.4s; }
        .process-step:nth-child(5) { animation-delay: 0.5s; }
        .process-step:nth-child(6) { animation-delay: 0.6s; }
        .step-icon {
            width: 60px;
            height: 60px;
            line-height: 60px;
            background: #E53E3E;
            color: #fff;
            border-radius: 50%;
            font-size: 22px;
            font-weight: bold;
            margin: 0 auto 20px;
            box-shadow: 0 5px 15px rgba(229,62,62,0.15);
            position: relative;
            z-index: 2;
        }
        .step-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 125%;
            height: 125%;
            border-radius: 50%;
            background: rgba(229, 62, 62, 0.3);
            transform: translate(-50%, -50%) scale(0.8);
            z-index: -1;
            animation: pulseRing 3s infinite ease-out;
        }
        .process-step h3 {
            font-size: 16px;
            color: #1D2129;
            margin-bottom: 5px;
        }
        .process-step p {
            font-size: 13px;
            color: #4E5969;
            line-height: 1.5;
        }
        .process-step:hover .step-icon {
            transform: scale(1.08);
            transition: 0.3s;
        }
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        @keyframes pulseRing {
            0% {
                transform: translate(-50%, -50%) scale(0.8);
                opacity: 0.8;
            }
            100% {
                transform: translate(-50%, -50%) scale(1.4);
                opacity: 0;
            }
        }

        .client {
            padding: 80px 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .client h2 {
            text-align: center;
            font-size: 32px;
            color: #1D2129;
            margin-bottom: 50px;
            position: relative;
            padding-bottom: 15px;
        }
        .client h2::after {
            content: '';
            width: 50px;
            height: 3px;
            background: #E53E3E;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 0;
        }
        .client-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 30px;
        }
        .client-item {
            width: 160px;
            height: 90px;
            background: #fff;
            border: 1px solid #E5E6EB;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: 0.3s;
        }
        .client-item img {
            max-width: 80%;
            max-height: 50px;
            opacity: 0.7;
            transition: 0.3s;
        }
        .client-item:hover {
            border-color: #E53E3E;
            box-shadow: 0 5px 15px rgba(229,62,62,0.1);
        }
        .client-item:hover img {
            opacity: 1;
            transform: scale(1.05);
        }

        .wiki {
            background: #F7F8FA;
            padding: 80px 20px;
        }
        .wiki-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .wiki h2 {
            text-align: center;
            font-size: 32px;
            color: #1D2129;
            margin-bottom: 50px;
            position: relative;
            padding-bottom: 15px;
        }
        .wiki h2::after {
            content: '';
            width: 50px;
            height: 3px;
            background: #E53E3E;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 0;
        }
        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .wiki-item {
            background: #fff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            transition: 0.3s;
            border: 1px solid transparent;
        }
        .wiki-item:hover {
            transform: translateY(-5px);
            border-color: #E53E3E;
        }
        .wiki-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .wiki-info {
            padding: 25px;
        }
        .wiki-info h3 {
            font-size: 18px;
            color: #1D2129;
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .wiki-info p {
            font-size: 14px;
            color: #4E5969;
            line-height: 1.7;
            margin-bottom: 15px;
        }
        .wiki-more {
            display: inline-block;
            color: #E53E3E;
            font-size: 14px;
            text-decoration: none;
            font-weight: 500;
        }

        .container {
            max-width: 1200px;
            margin: 50px auto;
            padding: 0 20px;
            display: flex;
            gap: 40px;
            align-items: flex-start;
            flex-direction: row-reverse;
        }
        .form-box{
            flex: 0 0 470px;
            background:#fff;
            border:1px solid #E53E3E;
            border-radius:12px;
            padding:38px;
        }
        .form-title{text-align:center;color:#E53E3E;margin-bottom:30px;font-size:23px}
        .form-item{margin-bottom:23px}
        .form-item label{color:#333;margin-bottom:7px;display:block}
        .form-item input,.form-item textarea{width:100%;height:47px;border:1px solid #ddd;border-radius:8px;padding:0 15px;outline:none}
        .form-item textarea{height:125px;padding:15px;resize:none}
        .submit-btn{width:100%;height:50px;background:#E53E3E;color:#fff;border:none;border-radius:8px;font-size:16px;cursor:pointer}
        .submit-btn:hover{background:#C53030}

        .faq {
            flex: 1;
            padding: 0;
        }
        .faq h2 {
            text-align: center;
            font-size: 32px;
            color: #1D2129;
            margin-bottom: 30px;
            position: relative;
            padding-bottom: 15px;
        }
        .faq h2::after {
            content: '';
            width: 50px;
            height: 3px;
            background: #E53E3E;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 0;
        }
        .faq-item {
            margin-bottom: 16px;
            border: 1px solid #E5E6EB;
            border-radius: 10px;
            overflow: hidden;
        }
        .faq-question {
            padding: 1px 20px;
            background: #FAFAFC;
            font-size: 16px;
            font-weight: 500;
            color: #1D2129;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: 0.2s;
        }
        .faq-question:hover {
            background: #FEF2F2;
        }
        .faq-question::after {
            content: '+';
            font-size: 26px;
            color: #E53E3E;
            transition: 0.3s;
        }
        .faq-question.active::after {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer-inner {
            padding: 0 28px 25px;
            font-size: 14px;
            color: #4E5969;
            line-height: 1.9;
        }

        .footer {
            background: #1D2129;
            color: #fff;
            padding: 50px 20px 30px;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }
        .footer-col {
            flex: 1;
            min-width: 250px;
        }
        .footer-col h3 {
            font-size: 18px;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 12px;
        }
        .footer-col h3::after {
            content: '';
            width: 40px;
            height: 2px;
            background: #E53E3E;
            position: absolute;
            left: 0;
            bottom: 0;
        }
        .footer-col p {
            font-size: 14px;
            color: #C9CDD4;
            line-height: 2;
            margin-bottom: 10px;
        }
        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            margin-top: 40px;
            border-top: 1px solid #33363D;
            font-size: 14px;
            color: #86909C;
        }
        .footer a:hover { color:#C9CDD4 !important; }

        @media (max-width:1200px) {
            .about {
                flex-direction: column;
                gap: 40px;
            }
            .about-img {
                flex: 0 0 auto;
                width: 100%;
            }
        }
        @media (max-width:992px) {
            .case-grid { grid-template-columns: repeat(2, 1fr); }
            .wiki-grid { grid-template-columns: repeat(2, 1fr); }
            .service-item { width: calc(50% - 10px); }
        }
        @media (max-width:900px) {
            .container { flex-direction: column; }
            .process-steps {
                flex-wrap: wrap;
                gap: 20px 0;
            }
            .process-step {
                width: 33%;
                margin-bottom: 20px;
            }
            .process-steps::before { display: none; }
        }
        @media (max-width:768px) {
            .right-nav {display:none;}
            .banner h1 {font-size:32px;}
            .case-grid { grid-template-columns: 1fr; }
            .wiki-grid { grid-template-columns: 1fr; }
            .service-item { width: 100%; }
            .cert-item { width: 220px; }
            .client-item { width: 140px; }
        }
        @media (max-width:600px) {
            .process-step { width: 50%; }
        }