/* roulang page: index */
:root {
            --brand-dark: #0F141C;
            --brand-darker: #090C10;
            --brand-green: #05D67D;
            --brand-green-hover: #04be6f;
            --brand-orange: #FF5E36;
            --brand-ice: #F6F8FB;
            --brand-gray-light: #EDF1F7;
            --brand-text: #111827;
            --brand-text-muted: #4B5563;
            --brand-text-soft: #9CA3AF;
            --brand-border: #E5E7EB;
            --brand-border-dark: #1E2633;
            --brand-card-bg: #FFFFFF;
            --brand-radius-sm: 8px;
            --brand-radius: 16px;
            --brand-radius-pill: 50rem;
            --brand-shadow: 0 10px 30px rgba(15, 20, 28, 0.05);
            --brand-shadow-hover: 0 18px 40px rgba(5, 214, 125, 0.16);
            --brand-shadow-dark: 0 15px 35px rgba(0, 0, 0, 0.35);
            --brand-transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        *, *::before, *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.68;
            color: var(--brand-text);
            background-color: #FFFFFF;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

        /* 顶部通栏导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            background: rgba(15, 20, 28, 0.94);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--brand-border-dark);
            transition: var(--brand-transition);
        }

        .header-topbar {
            background-color: var(--brand-darker);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 13px;
            color: var(--brand-text-soft);
            padding: 6px 0;
        }

        .topbar-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(5, 214, 125, 0.1);
            color: var(--brand-green);
            padding: 2px 10px;
            border-radius: var(--brand-radius-pill);
            font-size: 12px;
        }

        .header-main {
            padding: 14px 0;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #FFFFFF;
        }

        .brand-logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--brand-green), #00AA5E);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-dark);
            font-size: 20px;
            box-shadow: 0 4px 14px rgba(5, 214, 125, 0.35);
        }

        .nav-btn-action {
            background-color: var(--brand-green);
            color: var(--brand-dark);
            font-weight: 700;
            font-size: 15px;
            padding: 10px 24px;
            border-radius: var(--brand-radius-pill);
            border: 2px solid var(--brand-green);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 6px 18px rgba(5, 214, 125, 0.28);
        }

        .nav-btn-action:hover, .nav-btn-action:focus {
            background-color: var(--brand-green-hover);
            border-color: var(--brand-green-hover);
            color: var(--brand-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(5, 214, 125, 0.45);
        }

        /* 按钮体系 */
        .btn-brand-primary {
            background-color: var(--brand-green);
            color: var(--brand-dark);
            font-weight: 700;
            padding: 14px 34px;
            border-radius: var(--brand-radius-pill);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: none;
            transition: var(--brand-transition);
        }

        .btn-brand-primary:hover {
            background-color: var(--brand-green-hover);
            color: var(--brand-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(5, 214, 125, 0.35);
        }

        .btn-brand-outline {
            background: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
            font-weight: 600;
            padding: 14px 30px;
            border-radius: var(--brand-radius-pill);
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            backdrop-filter: blur(8px);
        }

        .btn-brand-outline:hover {
            background: rgba(255, 255, 255, 0.16);
            color: #FFFFFF;
            border-color: #FFFFFF;
            transform: translateY(-2px);
        }

        .btn-brand-accent {
            background-color: var(--brand-orange);
            color: #FFFFFF;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--brand-radius-pill);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-brand-accent:hover {
            background-color: #E54E28;
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 94, 54, 0.35);
        }

        /* 通用标题与板块 */
        .section-padding {
            padding: 90px 0;
        }

        .section-header {
            margin-bottom: 54px;
        }

        .section-badge {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--brand-green);
            background: rgba(5, 214, 125, 0.12);
            padding: 6px 14px;
            border-radius: var(--brand-radius-pill);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-badge-dark {
            background: rgba(5, 214, 125, 0.18);
            color: var(--brand-green);
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.32;
            color: var(--brand-text);
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--brand-text-muted);
            max-width: 760px;
            margin: 14px auto 0;
            line-height: 1.7;
        }

        .bg-ice {
            background-color: var(--brand-ice);
        }

        .bg-dark-pro {
            background-color: var(--brand-dark);
            color: #FFFFFF;
        }

        .bg-dark-pro .section-title {
            color: #FFFFFF;
        }

        .bg-dark-pro .section-subtitle {
            color: #9CA3AF;
        }

        /* 首屏 Hero */
        .hero-section {
            position: relative;
            min-height: 720px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(15, 20, 28, 0.95) 0%, rgba(15, 20, 28, 0.85) 100%),
                        url('/assets/images/be365078b0bb81c6.jpg') center/cover no-repeat;
            padding: 100px 0 90px;
            color: #FFFFFF;
            border-bottom: 1px solid var(--brand-border-dark);
        }

        .hero-badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 6px 16px;
            border-radius: var(--brand-radius-pill);
            color: var(--brand-green);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }

        .hero-title {
            font-size: 46px;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -1px;
            margin-bottom: 22px;
        }

        .hero-title-gradient {
            background: linear-gradient(90deg, #FFFFFF, var(--brand-green));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: #D1D5DB;
            margin-bottom: 36px;
            max-width: 860px;
        }

        .hero-trust-bar {
            margin-top: 50px;
            padding-top: 26px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            align-items: center;
        }

        .hero-trust-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #9CA3AF;
        }

        .hero-trust-item i {
            color: var(--brand-green);
            font-size: 16px;
        }

        /* 卡片基础 */
        .feature-card {
            background: var(--brand-card-bg);
            border: 1px solid var(--brand-border);
            border-radius: var(--brand-radius);
            padding: 32px 28px;
            height: 100%;
            transition: var(--brand-transition);
            box-shadow: var(--brand-shadow);
            position: relative;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            border-color: rgba(5, 214, 125, 0.4);
            box-shadow: var(--brand-shadow-hover);
        }

        .feature-card-icon {
            width: 58px;
            height: 58px;
            border-radius: 14px;
            background: rgba(5, 214, 125, 0.1);
            color: var(--brand-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 22px;
            transition: var(--brand-transition);
        }

        .feature-card:hover .feature-card-icon {
            background: var(--brand-green);
            color: var(--brand-dark);
            transform: scale(1.06);
        }

        .feature-card-title {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--brand-text);
        }

        .feature-card-desc {
            font-size: 15px;
            color: var(--brand-text-muted);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* 方案卡片 */
        .solution-card {
            background: #FFFFFF;
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: var(--brand-transition);
            box-shadow: var(--brand-shadow);
        }

        .solution-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--brand-shadow-hover);
            border-color: var(--brand-green);
        }

        .solution-card-img-wrap {
            position: relative;
            height: 220px;
            overflow: hidden;
            background-color: #1F2937;
        }

        .solution-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .solution-card:hover .solution-card-img-wrap img {
            transform: scale(1.06);
        }

        .solution-card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(15, 20, 28, 0.85);
            color: var(--brand-green);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--brand-radius-pill);
            backdrop-filter: blur(6px);
        }

        .solution-card-body {
            padding: 28px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .solution-card-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .solution-card-desc {
            font-size: 14px;
            color: var(--brand-text-muted);
            line-height: 1.65;
            margin-bottom: 20px;
        }

        .solution-feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
            font-size: 14px;
            color: var(--brand-text);
        }

        .solution-feature-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 8px;
        }

        .solution-feature-list li i {
            color: var(--brand-green);
            font-size: 13px;
        }

        /* 步骤流程 */
        .step-item {
            position: relative;
            text-align: center;
            padding: 15px;
        }

        .step-icon-wrap {
            width: 76px;
            height: 76px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: #FFFFFF;
            border: 2px dashed var(--brand-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--brand-green);
            position: relative;
            box-shadow: 0 6px 18px rgba(5, 214, 125, 0.15);
            transition: var(--brand-transition);
        }

        .step-item:hover .step-icon-wrap {
            background: var(--brand-green);
            color: var(--brand-dark);
            transform: scale(1.08);
            border-style: solid;
        }

        .step-number {
            position: absolute;
            top: -6px;
            right: -6px;
            width: 26px;
            height: 26px;
            background: var(--brand-orange);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 800;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .step-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-desc {
            font-size: 14px;
            color: var(--brand-text-muted);
            line-height: 1.6;
        }

        /* 统计数据条 */
        .stats-counter-banner {
            background: linear-gradient(135deg, #111722 0%, #090C10 100%);
            border-top: 1px solid var(--brand-border-dark);
            border-bottom: 1px solid var(--brand-border-dark);
            padding: 55px 0;
            color: #FFFFFF;
        }

        .stat-item {
            text-align: center;
            padding: 10px;
        }

        .stat-value {
            font-size: 44px;
            font-weight: 900;
            color: var(--brand-green);
            line-height: 1.1;
            font-feature-settings: "tnum";
            margin-bottom: 8px;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
        }

        .stat-label {
            font-size: 15px;
            color: #9CA3AF;
            font-weight: 500;
        }

        /* 案例墙 Bento 卡片 */
        .case-card {
            background: #FFFFFF;
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            padding: 28px;
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: var(--brand-shadow);
            transition: var(--brand-transition);
        }

        .case-card:hover {
            transform: translateY(-4px);
            border-color: rgba(5, 214, 125, 0.4);
            box-shadow: var(--brand-shadow-hover);
        }

        .case-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 18px;
        }

        .case-badge {
            background: rgba(255, 94, 54, 0.1);
            color: var(--brand-orange);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: var(--brand-radius-pill);
        }

        .case-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .case-desc {
            font-size: 14px;
            color: var(--brand-text-muted);
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .case-metric-box {
            background: var(--brand-ice);
            border-radius: var(--brand-radius-sm);
            padding: 12px 16px;
            display: flex;
            justify-content: space-around;
            text-align: center;
        }

        .case-metric-num {
            font-size: 20px;
            font-weight: 800;
            color: var(--brand-green);
        }

        .case-metric-txt {
            font-size: 12px;
            color: var(--brand-text-soft);
        }

        /* 资讯卡片 */
        .news-card {
            background: #FFFFFF;
            border: 1px solid var(--brand-border);
            border-radius: var(--brand-radius);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: var(--brand-shadow);
            transition: var(--brand-transition);
        }

        .news-card:hover {
            transform: translateY(-5px);
            border-color: var(--brand-green);
            box-shadow: var(--brand-shadow-hover);
        }

        .news-card-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card-date {
            font-size: 13px;
            color: var(--brand-text-soft);
            margin-bottom: 8px;
        }

        .news-card-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.45;
        }

        .news-card-text {
            font-size: 14px;
            color: var(--brand-text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex-grow: 1;
        }

        .news-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-green);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .news-card-link:hover {
            color: var(--brand-green-hover);
            transform: translateX(3px);
        }

        /* 硬件生态徽章墙 */
        .eco-partner-item {
            background: #FFFFFF;
            border: 1px solid var(--brand-border);
            border-radius: var(--brand-radius-sm);
            padding: 20px;
            text-align: center;
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            transition: var(--brand-transition);
        }

        .eco-partner-item:hover {
            border-color: var(--brand-green);
            background: rgba(5, 214, 125, 0.04);
            transform: translateY(-3px);
        }

        .eco-icon {
            font-size: 32px;
            color: var(--brand-text-muted);
            margin-bottom: 10px;
            transition: var(--brand-transition);
        }

        .eco-partner-item:hover .eco-icon {
            color: var(--brand-green);
        }

        .eco-title {
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .eco-sub {
            font-size: 12px;
            color: var(--brand-text-soft);
        }

        /* 手风琴 FAQ */
        .custom-accordion .accordion-item {
            border: 1px solid var(--brand-border);
            border-radius: var(--brand-radius) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
            transition: var(--brand-transition);
        }

        .custom-accordion .accordion-item:hover {
            border-color: rgba(5, 214, 125, 0.5);
        }

        .custom-accordion .accordion-button {
            font-size: 17px;
            font-weight: 700;
            color: var(--brand-text);
            background: #FFFFFF;
            padding: 20px 24px;
            box-shadow: none;
        }

        .custom-accordion .accordion-button:not(.collapsed) {
            color: var(--brand-green);
            background: rgba(5, 214, 125, 0.05);
            border-left: 4px solid var(--brand-green);
        }

        .custom-accordion .accordion-body {
            font-size: 15px;
            color: var(--brand-text-muted);
            line-height: 1.7;
            padding: 20px 24px;
            background: #FFFFFF;
        }

        /* 预约转化卡片 */
        .conversion-card-wrapper {
            background: linear-gradient(135deg, #131A24 0%, #0B0E14 100%);
            border-radius: 24px;
            padding: 56px 44px;
            border: 1px solid var(--brand-border-dark);
            box-shadow: var(--brand-shadow-dark);
            color: #FFFFFF;
        }

        .form-control-custom, .form-select-custom {
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: #FFFFFF;
            border-radius: 10px;
            padding: 12px 16px;
            font-size: 15px;
            transition: var(--brand-transition);
        }

        .form-control-custom:focus, .form-select-custom:focus {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--brand-green);
            box-shadow: 0 0 0 4px rgba(5, 214, 125, 0.2);
            color: #FFFFFF;
        }

        .form-control-custom::placeholder {
            color: #9CA3AF;
        }

        .form-select-custom option {
            background-color: var(--brand-dark);
            color: #FFFFFF;
        }

        /* 页脚 */
        .site-footer {
            background-color: var(--brand-darker);
            color: #9CA3AF;
            border-top: 1px solid var(--brand-border-dark);
            font-size: 14px;
            padding: 70px 0 25px;
        }

        .footer-brand-title {
            color: #FFFFFF;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.75;
            color: #9CA3AF;
            margin-bottom: 24px;
        }

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

        .footer-link-group li {
            margin-bottom: 10px;
        }

        .footer-link-group a:hover {
            color: var(--brand-green);
        }

        .footer-compliance-row {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            margin: 36px 0 24px;
            font-size: 13px;
        }

        .footer-bottom-copy {
            font-size: 13px;
            color: #6B7280;
        }

        /* 响应式断点 */
        @media (max-width: 991.98px) {
            .hero-title {
                font-size: 36px;
            }
            .section-title {
                font-size: 28px;
            }
            .section-padding {
                padding: 60px 0;
            }
            .conversion-card-wrapper {
                padding: 36px 20px;
            }
            .header-topbar {
                display: none;
            }
        }

        @media (max-width: 575.98px) {
            .hero-title {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .btn-brand-primary, .btn-brand-outline {
                width: 100%;
                justify-content: center;
            }
            .stat-value {
                font-size: 34px;
            }
        }