/* roulang page: index */
:root {
            --primary: #0D5C3A;
            --primary-dark: #083D26;
            --primary-light: #167A4E;
            --accent: #F97316;
            --accent-hover: #EA580C;
            --bg-soft: #F8FAFC;
            --bg-dark: #062316;
            --text-main: #1F2937;
            --text-muted: #4B5563;
            --heading-color: #0B1912;
            --border-color: #E2E8F0;
            --card-shadow: 0 4px 20px -2px rgba(13, 92, 58, 0.05);
            --card-shadow-hover: 0 14px 30px -4px rgba(13, 92, 58, 0.14);
            --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        /* 基础样式复位 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: var(--bg-soft);
            line-height: 1.75;
            letter-spacing: -0.01em;
            padding-bottom: 72px; /* 为吸底转换条留白 */
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--heading-color);
            font-weight: 700;
            line-height: 1.35;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-smooth);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* 顶部信息条 */
        .site-topbar {
            background-color: #F1F5F9;
            font-size: 0.85rem;
            color: var(--text-muted);
            border-bottom: 1px solid #E2E8F0;
        }

        .site-topbar a {
            color: var(--text-muted);
        }

        .site-topbar a:hover {
            color: var(--primary);
        }

        /* 主导航栏 */
        .site-header {
            background: #FFFFFF;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            position: sticky;
            top: 0;
            z-index: 1020;
        }

        .navbar-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary) !important;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .navbar-brand .brand-badge {
            font-size: 0.72rem;
            background: rgba(13, 92, 58, 0.1);
            color: var(--primary);
            padding: 3px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        /* 搜索主导型核心样式 */
        .nav-search-wrapper {
            position: relative;
            max-width: 380px;
            width: 100%;
        }

        .nav-search-input {
            border-radius: 50px;
            border: 1px solid #CBD5E1;
            padding: 8px 45px 8px 18px;
            font-size: 0.875rem;
            background-color: #F8FAFC;
            transition: var(--transition-smooth);
            width: 100%;
        }

        .nav-search-input:focus {
            outline: none;
            border-color: var(--primary);
            background-color: #FFFFFF;
            box-shadow: 0 0 0 3px rgba(13, 92, 58, 0.15);
        }

        .nav-search-btn {
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            border: none;
            background: var(--primary);
            color: #FFFFFF;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: var(--transition-smooth);
        }

        .nav-search-btn:hover {
            background: var(--primary-light);
        }

        .nav-link {
            font-weight: 600;
            color: #334155 !important;
            padding: 0.5rem 0.85rem !important;
            font-size: 0.95rem;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary) !important;
        }

        .btn-trial {
            background-color: var(--accent);
            color: #FFFFFF !important;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 8px;
            border: 1px solid var(--accent);
            transition: var(--transition-smooth);
        }

        .btn-trial:hover {
            background-color: var(--accent-hover);
            border-color: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
        }

        /* 通用板块排版与间距 */
        .section-padding {
            padding-top: 5.5rem;
            padding-bottom: 5.5rem;
        }

        .section-header {
            margin-bottom: 3.5rem;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--primary);
            background: rgba(13, 92, 58, 0.08);
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 1rem;
            color: var(--heading-color);
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 780px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }

        /* 顶部首屏轮播 (#hero) */
        .hero-section {
            background-color: #07291A;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }

        .hero-carousel-item {
            min-height: 580px;
            background-size: cover;
            background-position: center;
            position: relative;
            display: flex;
            align-items: center;
        }

        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(90deg, rgba(7, 35, 23, 0.94) 0%, rgba(7, 35, 23, 0.78) 55%, rgba(7, 35, 23, 0.45) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            padding: 4rem 0;
        }

        .hero-title {
            font-size: 2.85rem;
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.25;
            margin-bottom: 1.25rem;
        }

        .hero-p {
            font-size: 1.1rem;
            line-height: 1.8;
            color: #E2E8F0;
            margin-bottom: 2rem;
            max-width: 640px;
        }

        .hero-feature-pills {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 2rem;
        }

        .hero-feature-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.875rem;
            color: #F8FAFC;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .hero-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }

        .btn-hero-primary {
            background-color: var(--accent);
            color: #FFFFFF;
            font-weight: 700;
            padding: 13px 32px;
            border-radius: 8px;
            border: 1px solid var(--accent);
            transition: var(--transition-smooth);
            font-size: 1rem;
        }

        .btn-hero-primary:hover {
            background-color: var(--accent-hover);
            color: #FFFFFF;
            box-shadow: 0 8px 20px rgba(249, 115, 22, 0.35);
        }

        .btn-hero-secondary {
            background-color: transparent;
            color: #FFFFFF;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.4);
            transition: var(--transition-smooth);
        }

        .btn-hero-secondary:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
            border-color: #FFFFFF;
        }

        /* 品牌与技术底座 (#about) */
        .about-badge-card {
            background: #FFFFFF;
            border-radius: 12px;
            padding: 1.5rem;
            box-shadow: var(--card-shadow);
            border-left: 4px solid var(--primary);
            height: 100%;
        }

        .about-badge-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .about-badge-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.65;
        }

        /* 功能卡片网格 (#features) */
        .feature-card {
            background: #FFFFFF;
            border-radius: 12px;
            padding: 2.25rem 1.75rem;
            box-shadow: var(--card-shadow);
            border: 1px solid #EEF2F6;
            border-top: 3px solid var(--primary);
            transition: var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--card-shadow-hover);
            border-top-color: var(--accent);
        }

        .feature-icon-wrap {
            width: 54px;
            height: 54px;
            background-color: rgba(13, 92, 58, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
            transition: var(--transition-smooth);
        }

        .feature-card:hover .feature-icon-wrap {
            background-color: var(--primary);
            color: #FFFFFF;
        }

        .feature-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.85rem;
        }

        .feature-card p {
            font-size: 0.925rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin: 0;
        }

        /* 场景卡片 (#products) */
        .product-card {
            background: #FFFFFF;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid #EEF2F6;
            transition: var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--card-shadow-hover);
        }

        .product-thumb {
            height: 220px;
            overflow: hidden;
            position: relative;
        }

        .product-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-smooth);
        }

        .product-card:hover .product-thumb img {
            transform: scale(1.05);
        }

        .product-body {
            padding: 2rem 1.75rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .product-badge-group {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 1rem;
        }

        .product-tag {
            font-size: 0.75rem;
            background-color: #F1F5F9;
            color: #475569;
            padding: 3px 10px;
            border-radius: 4px;
            font-weight: 600;
        }

        .product-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.85rem;
        }

        .product-body p {
            font-size: 0.925rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 1.25rem;
            flex-grow: 1;
        }

        .product-footer-link {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .product-footer-link:hover {
            color: var(--accent);
        }

        /* 理念深色沉浸区 (#philosophy) */
        .philosophy-section {
            background-color: var(--bg-dark);
            color: #FFFFFF;
            position: relative;
        }

        .philosophy-section h2, .philosophy-section h3 {
            color: #FFFFFF;
        }

        .philosophy-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            padding: 2rem;
            backdrop-filter: blur(8px);
            height: 100%;
        }

        .philosophy-card .number {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 1rem;
        }

        .philosophy-card p {
            color: #CBD5E1;
            font-size: 0.925rem;
            margin: 0;
            line-height: 1.75;
        }

        /* 案例区 (#cases) */
        .case-card {
            background: #FFFFFF;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid #EEF2F6;
            margin-bottom: 2rem;
        }

        .case-img-wrap {
            height: 100%;
            min-height: 320px;
        }

        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-content-wrap {
            padding: 2.5rem;
        }

        .case-stat-pill {
            display: inline-block;
            background: rgba(249, 115, 22, 0.1);
            color: var(--accent-hover);
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        /* 运营指标条 (#stats) */
        .stats-section {
            background: linear-gradient(135deg, #094028 0%, #062316 100%);
            color: #FFFFFF;
            padding: 4.5rem 0;
        }

        .stat-item {
            text-align: center;
            padding: 1rem;
        }

        .stat-number {
            font-size: 3.25rem;
            font-weight: 900;
            color: #F8FAFC;
            line-height: 1.1;
            margin-bottom: 0.5rem;
            display: flex;
            align-items: baseline;
            justify-content: center;
        }

        .stat-number span {
            color: var(--accent);
            font-size: 2rem;
            margin-left: 4px;
        }

        .stat-label {
            font-size: 1rem;
            color: #CBD5E1;
            font-weight: 500;
        }

        /* 客户评价网格 (#reviews) */
        .review-card {
            background: #FFFFFF;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: var(--card-shadow);
            border: 1px solid #EEF2F6;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .review-stars {
            color: #FBBF24;
            margin-bottom: 1rem;
            font-size: 0.9rem;
        }

        .review-text {
            font-size: 0.95rem;
            color: #475569;
            line-height: 1.8;
            margin-bottom: 1.5rem;
            flex-grow: 1;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid #F1F5F9;
            padding-top: 1rem;
        }

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background-color: rgba(13, 92, 58, 0.12);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
        }

        .author-info h5 {
            font-size: 0.95rem;
            margin: 0;
            font-weight: 700;
        }

        .author-info p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* 行业资讯摘要 (#news) */
        .news-card {
            background: #FFFFFF;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid #EEF2F6;
            height: 100%;
            transition: var(--transition-smooth);
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
        }

        .news-thumb {
            height: 180px;
            overflow: hidden;
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-body {
            padding: 1.75rem;
        }

        .news-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .news-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            line-height: 1.45;
        }

        .news-body p {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* FAQ 手风琴 (#faq) */
        .accordion-item {
            background-color: #FFFFFF;
            border: 1px solid #E2E8F0;
            border-radius: 10px !important;
            margin-bottom: 1rem;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
        }

        .accordion-button {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--heading-color);
            padding: 1.25rem 1.5rem;
            background: #FFFFFF;
            box-shadow: none !important;
        }

        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background-color: #F8FAFC;
            border-left: 4px solid var(--primary);
            padding-left: calc(1.5rem - 4px);
        }

        .accordion-button::after {
            background-size: 1.1rem;
        }

        .accordion-body {
            padding: 1.25rem 1.5rem 1.5rem 1.5rem;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            background: #FFFFFF;
        }

        /* 售后保障条 (#guarantee) */
        .guarantee-bar {
            background-color: #FFFFFF;
            border-top: 1px solid #E2E8F0;
            border-bottom: 1px solid #E2E8F0;
            padding: 3.5rem 0;
        }

        .guarantee-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .guarantee-icon {
            width: 48px;
            height: 48px;
            background: rgba(13, 92, 58, 0.08);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.3rem;
            flex-shrink: 0;
        }

        .guarantee-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.35rem;
        }

        .guarantee-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* 转化表单区 (#contact) */
        .contact-box {
            background: #FFFFFF;
            border-radius: 16px;
            box-shadow: 0 10px 30px -5px rgba(13, 92, 58, 0.08);
            border: 1px solid #E2E8F0;
            padding: 3rem;
        }

        .form-control, .form-select {
            border-radius: 8px;
            padding: 11px 16px;
            border: 1px solid #CBD5E1;
            font-size: 0.925rem;
        }

        .form-control:focus, .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 92, 58, 0.15);
        }

        .form-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: #334155;
            margin-bottom: 0.4rem;
        }

        /* 页脚 */
        .site-footer {
            background-color: var(--bg-dark);
            color: #94A3B8;
            font-size: 0.9rem;
            padding: 4.5rem 0 2rem 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .site-footer h4 {
            color: #FFFFFF;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 0.65rem;
        }

        .footer-links a {
            color: #94A3B8;
        }

        .footer-links a:hover {
            color: #FFFFFF;
            padding-left: 4px;
        }

        .footer-bottom {
            margin-top: 3.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.85rem;
            color: #64748B;
        }

        /* 底部吸底转化条 */
        .sticky-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: #FFFFFF;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
            z-index: 1010;
            padding: 12px 0;
            border-top: 1px solid #E2E8F0;
        }

        .sticky-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .sticky-text {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .sticky-text .pulse-dot {
            width: 10px;
            height: 10px;
            background-color: var(--accent);
            border-radius: 50%;
            display: inline-block;
            box-shadow: 0 0 0 0 rgba(249, 115, 22, 0.7);
            animation: pulse-orange 1.8s infinite;
        }

        @keyframes pulse-orange {
            0% {
                transform: scale(0.95);
                box-shadow: 0 0 0 0 rgba(249, 115, 22, 0.7);
            }
            70% {
                transform: scale(1);
                box-shadow: 0 0 0 8px rgba(249, 115, 22, 0);
            }
            100% {
                transform: scale(0.95);
                box-shadow: 0 0 0 0 rgba(249, 115, 22, 0);
            }
        }

        /* 响应式调整 */
        @media (max-width: 991.98px) {
            .section-padding {
                padding-top: 4rem;
                padding-bottom: 4rem;
            }
            .hero-title {
                font-size: 2.1rem;
            }
            .section-title {
                font-size: 1.85rem;
            }
            .nav-search-wrapper {
                max-width: 100%;
                margin: 12px 0;
            }
            .sticky-wrapper {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            body {
                padding-bottom: 110px;
            }
        }

        @media (max-width: 575.98px) {
            .hero-title {
                font-size: 1.75rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
            .contact-box {
                padding: 1.75rem 1.25rem;
            }
        }