/* roulang page: index */
:root {
            --primary-gradient: linear-gradient(135deg, #4F46E5 0%, #7C3AED 50%, #9333EA 100%);
            --primary-color: #4F46E5;
            --primary-dark: #3730A3;
            --accent-amber: #F59E0B;
            --accent-cyan: #06B6D4;
            --bg-body: #F8FAFC;
            --bg-alt: #F1F5F9;
            --bg-dark: #0B0F19;
            --text-main: #0F172A;
            --text-muted: #475569;
            --text-light: #94A3B8;
            --card-border: rgba(226, 232, 240, 0.8);
            --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.05);
            --card-shadow-hover: 0 20px 35px -10px rgba(79, 70, 229, 0.12);
            --radius-md: 12px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.25s ease;
        }

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 顶部微型栏 */
        .top-bar {
            background: #020617;
            color: #94A3B8;
            font-size: 13px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-info span {
            margin-right: 20px;
        }

        /* 主导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            transition: all 0.3s;
        }
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 76px;
        }
        .brand-logo {
            font-size: 20px;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 32px;
            align-items: center;
        }
        .nav-link {
            font-weight: 600;
            color: var(--text-muted);
            font-size: 15px;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color);
        }
        .btn-cta-nav {
            background: var(--primary-gradient);
            color: #fff;
            padding: 10px 22px;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
        }
        .btn-cta-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
        }

        /* 统一卡片与徽章 */
        .badge-pill {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 700;
            background: rgba(79, 70, 229, 0.08);
            color: var(--primary-color);
            border: 1px solid rgba(79, 70, 229, 0.2);
            margin-bottom: 12px;
        }
        .badge-amber {
            background: rgba(245, 158, 11, 0.1);
            color: var(--accent-amber);
            border-color: rgba(245, 158, 11, 0.3);
        }
        .badge-cyan {
            background: rgba(6, 182, 212, 0.1);
            color: var(--accent-cyan);
            border-color: rgba(6, 182, 212, 0.3);
        }

        .card-custom {
            background: #ffffff;
            border: 1px solid var(--card-border);
            border-radius: var(--radius-2xl);
            box-shadow: var(--card-shadow);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .card-custom:hover {
            transform: translateY(-5px);
            box-shadow: var(--card-shadow-hover);
            border-color: rgba(79, 70, 229, 0.3);
        }

        .section-padding {
            padding: 96px 0;
        }
        .section-alt {
            background-color: var(--bg-alt);
        }
        .section-dark {
            background-color: var(--bg-dark);
            color: #fff;
        }

        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 56px auto;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-dark .section-title {
            color: #ffffff;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .section-dark .section-desc {
            color: var(--text-light);
        }

        /* 板块1：Hero 首屏（工业参数与高可靠架构） */
        .hero-section {
            position: relative;
            background: #060913 url('/assets/images/2af0c43b2bdb77db.webp') center/cover no-repeat;
            color: #fff;
            padding: 110px 0 90px 0;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 9, 19, 0.85) 0%, rgba(6, 9, 19, 0.95) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-main-title {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #FFFFFF 0%, #E0E7FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-intro {
            font-size: 17px;
            color: #CBD5E1;
            line-height: 1.8;
            max-width: 900px;
            margin-bottom: 36px;
        }
        .hero-action-bar {
            display: flex;
            gap: 16px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }
        .btn-primary-hero {
            background: var(--primary-gradient);
            color: #fff;
            padding: 14px 34px;
            border-radius: 9999px;
            font-weight: 700;
            font-size: 16px;
            box-shadow: 0 10px 25px rgba(79, 70, 229, 0.4);
        }
        .btn-primary-hero:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 30px rgba(79, 70, 229, 0.5);
        }
        .btn-secondary-hero {
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 14px 34px;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 16px;
            backdrop-filter: blur(10px);
        }
        .btn-secondary-hero:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .hero-spec-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            background: rgba(15, 23, 42, 0.65);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-xl);
            padding: 24px 30px;
            backdrop-filter: blur(16px);
        }
        .hero-spec-item h4 {
            font-size: 28px;
            color: #38BDF8;
            font-weight: 800;
            margin-bottom: 4px;
        }
        .hero-spec-item p {
            font-size: 13px;
            color: #94A3B8;
        }

        /* 板块2：卖点三连 */
        .trio-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .trio-card {
            padding: 36px 30px;
            position: relative;
        }
        .trio-icon-box {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 24px;
            margin-bottom: 20px;
            box-shadow: 0 8px 16px rgba(79, 70, 229, 0.25);
        }
        .trio-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .trio-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
        }

        /* 板块3：入口矩阵 */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .matrix-card {
            padding: 28px 24px;
            background: #fff;
            border-radius: var(--radius-xl);
            border: 1px solid var(--card-border);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .matrix-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .matrix-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 18px;
            line-height: 1.5;
        }
        .matrix-link {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary-color);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* 板块4：产品主导流 - 功能分组 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .feature-card {
            padding: 32px 28px;
            border-radius: var(--radius-2xl);
            background: #ffffff;
        }
        .feature-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
        }

        /* 板块5：深色沉浸拓扑架构 */
        .arch-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .arch-card-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .arch-sub-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-xl);
            padding: 24px;
        }
        .arch-sub-card h4 {
            font-size: 17px;
            color: #E2E8F0;
            margin-bottom: 8px;
        }
        .arch-sub-card p {
            font-size: 14px;
            color: #94A3B8;
        }

        /* 板块6：演示与截图看板 */
        .showcase-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: center;
        }
        .mockup-wrapper {
            position: relative;
            border-radius: var(--radius-2xl);
            overflow: hidden;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
            border: 1px solid var(--card-border);
        }
        .showcase-feature-item {
            display: flex;
            gap: 16px;
            margin-bottom: 24px;
        }
        .showcase-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary-color);
            margin-top: 8px;
            flex-shrink: 0;
        }

        /* 板块7：场景矩阵 */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .scenario-card {
            border-radius: var(--radius-xl);
            overflow: hidden;
            background: #fff;
        }
        .scenario-thumb {
            height: 160px;
            position: relative;
            overflow: hidden;
        }
        .scenario-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s;
        }
        .scenario-card:hover .scenario-thumb img {
            transform: scale(1.05);
        }
        .scenario-body {
            padding: 24px 20px;
        }
        .scenario-body h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .scenario-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 板块8：核心指标与性能统计条 */
        .stat-bar-wrapper {
            background: var(--primary-gradient);
            border-radius: var(--radius-2xl);
            padding: 56px 40px;
            color: #fff;
            box-shadow: 0 20px 40px -10px rgba(79, 70, 229, 0.3);
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }
        .stat-num {
            font-size: 40px;
            font-weight: 800;
            margin-bottom: 6px;
            font-family: inherit;
        }
        .stat-label {
            font-size: 14px;
            opacity: 0.9;
            font-weight: 500;
        }

        /* 板块9：客户成功故事 */
        .story-container {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 40px;
            background: #fff;
            border-radius: var(--radius-2xl);
            border: 1px solid var(--card-border);
            overflow: hidden;
            align-items: center;
        }
        .story-img-box {
            height: 100%;
            min-height: 380px;
        }
        .story-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .story-content {
            padding: 48px;
        }
        .story-content h3 {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.4;
        }
        .story-content p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .story-tag-list {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* 板块10：口碑墙与评价 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .testi-card {
            padding: 32px 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .testi-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 24px;
            font-style: italic;
        }
        .testi-author {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary-color);
        }
        .author-meta h5 {
            font-size: 15px;
            font-weight: 700;
        }
        .author-meta span {
            font-size: 12px;
            color: var(--text-light);
        }

        /* 板块11：版本方案与阶梯 */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            align-items: stretch;
        }
        .pricing-card {
            padding: 40px 32px;
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .pricing-card.featured {
            border: 2px solid var(--primary-color);
            transform: scale(1.03);
            box-shadow: 0 20px 35px -10px rgba(79, 70, 229, 0.2);
        }
        .pricing-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .pricing-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .pricing-spec-list {
            list-style: none;
            margin-bottom: 32px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .pricing-spec-list li::before {
            content: "✓";
            color: var(--primary-color);
            font-weight: 800;
            margin-right: 8px;
        }
        .btn-pricing {
            width: 100%;
            text-align: center;
            padding: 12px 0;
            border-radius: 9999px;
            font-weight: 700;
            font-size: 14px;
            background: var(--bg-alt);
            color: var(--text-main);
            border: 1px solid var(--card-border);
        }
        .btn-pricing:hover, .pricing-card.featured .btn-pricing {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
        }

        /* 板块12：资讯与白皮书 */
        .insights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .insight-card {
            overflow: hidden;
            border-radius: var(--radius-xl);
            background: #fff;
        }
        .insight-thumb {
            height: 180px;
            overflow: hidden;
        }
        .insight-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .insight-content {
            padding: 24px;
        }
        .insight-date {
            font-size: 12px;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .insight-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .insight-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 板块13：FAQ 手风琴 */
        .faq-wrapper {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .faq-question {
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 700;
            font-size: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }
        .faq-icon {
            font-size: 18px;
            transition: transform 0.3s ease;
        }
        .faq-answer {
            padding: 0 24px 20px 24px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        /* 板块14：底部收口行动转化（表单获客与隐私） */
        .cta-section {
            background: #0B0F19 url('/assets/images/5c268c2b580541b9.jpg') center/cover no-repeat;
            position: relative;
            color: #fff;
            padding: 100px 0;
        }
        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 15, 25, 0.9) 0%, rgba(11, 15, 25, 0.96) 100%);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
        }
        .cta-inner h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 20px;
        }
        .cta-inner p {
            color: #CBD5E1;
            font-size: 16px;
            line-height: 1.7;
            margin-bottom: 36px;
        }
        .inquiry-form {
            display: flex;
            gap: 12px;
            max-width: 580px;
            margin: 0 auto 20px auto;
        }
        .inquiry-input {
            flex: 1;
            padding: 14px 20px;
            border-radius: 9999px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            outline: none;
            font-size: 14px;
            backdrop-filter: blur(10px);
        }
        .inquiry-input::placeholder {
            color: #94A3B8;
        }
        .btn-inquiry {
            padding: 14px 32px;
            border-radius: 9999px;
            background: var(--primary-gradient);
            color: #fff;
            border: none;
            font-weight: 700;
            cursor: pointer;
            font-size: 15px;
            box-shadow: 0 10px 20px rgba(79, 70, 229, 0.4);
        }
        .btn-inquiry:hover {
            transform: translateY(-2px);
        }
        .privacy-note {
            font-size: 12px;
            color: #94A3B8;
        }

        /* 页脚 */
        .site-footer {
            background: #060913;
            color: #94A3B8;
            padding: 70px 0 30px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 50px;
        }
        .footer-brand h4 {
            font-size: 18px;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 700;
        }
        .footer-brand p {
            line-height: 1.7;
            font-size: 13px;
            color: #64748B;
            max-width: 320px;
        }
        .footer-links h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 13px;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: #64748B;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-spec-grid { grid-template-columns: repeat(2, 1fr); }
            .trio-grid, .features-grid, .testimonials-grid, .pricing-grid, .insights-grid { grid-template-columns: repeat(2, 1fr); }
            .matrix-grid, .scenario-grid { grid-template-columns: repeat(2, 1fr); }
            .arch-layout, .showcase-layout, .story-container { grid-template-columns: 1fr; }
            .stat-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .section-padding { padding: 60px 0; }
            .hero-main-title { font-size: 32px; }
            .trio-grid, .features-grid, .testimonials-grid, .pricing-grid, .insights-grid, .matrix-grid, .scenario-grid { grid-template-columns: 1fr; }
            .stat-grid { grid-template-columns: 1fr 1fr; }
            .hero-spec-grid { grid-template-columns: 1fr; }
            .inquiry-form { flex-direction: column; }
            .nav-menu { display: none; }
            .story-content { padding: 30px; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
        }