/* roulang page: index */
:root {
            --primary: #00C853;
            --primary-hover: #00B248;
            --secondary: #00B0FF;
            --accent: #FF6D00;
            --dark-bg: #0B0E14;
            --dark-card: #151B26;
            --dark-border: rgba(0, 200, 83, 0.15);
            --light-bg: #F4F6F9;
            --light-card: #FFFFFF;
            --text-main: #111827;
            --text-secondary: #4B5563;
            --text-muted: #9CA3AF;
            --sidebar-width: 260px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

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

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

        a:hover, a:focus {
            color: var(--primary);
            text-decoration: none;
        }

        /* 桌面端左侧竖向固定导航 */
        .desktop-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--dark-bg);
            border-right: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 28px 18px;
            overflow-y: auto;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-bottom: 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 1.25rem;
            box-shadow: 0 4px 12px rgba(0, 200, 83, 0.35);
        }

        .brand-text {
            color: #FFFFFF;
            font-size: 1.05rem;
            font-weight: 700;
            letter-spacing: -0.3px;
        }

        .sidebar-menu {
            list-style: none;
            margin: 24px 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .sidebar-menu li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            border-radius: 8px;
            color: var(--text-muted);
            font-size: 0.92rem;
            font-weight: 500;
        }

        .sidebar-menu li a i {
            font-size: 1rem;
            width: 20px;
            text-align: center;
        }

        .sidebar-menu li a:hover,
        .sidebar-menu li a.active {
            background: rgba(0, 200, 83, 0.12);
            color: var(--primary);
            border-left: 3px solid var(--primary);
        }

        .sidebar-footer {
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .system-status {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            color: #9CA3AF;
            margin-bottom: 14px;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            background-color: var(--primary);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--primary);
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0% { transform: scale(0.95); opacity: 0.8; }
            50% { transform: scale(1.2); opacity: 1; }
            100% { transform: scale(0.95); opacity: 0.8; }
        }

        .sidebar-cta-btn {
            display: block;
            width: 100%;
            text-align: center;
            background: var(--accent);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 0.88rem;
            padding: 10px 0;
            border-radius: 6px;
            box-shadow: 0 4px 14px rgba(255, 109, 0, 0.3);
        }

        .sidebar-cta-btn:hover {
            background: #E65100;
            color: #FFFFFF;
        }

        /* 移动端顶栏 */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--dark-bg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            z-index: 1001;
            padding: 0 16px;
            align-items: center;
            justify-content: space-between;
        }

        .mobile-toggle {
            background: none;
            border: none;
            color: #FFFFFF;
            font-size: 1.4rem;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-nav-panel {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--dark-bg);
            display: none;
            flex-direction: column;
            padding: 20px;
            z-index: 1000;
            overflow-y: auto;
        }

        .mobile-nav-panel.open {
            display: flex;
        }

        /* 主体布局 */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            background: var(--light-bg);
            position: relative;
        }

        /* 基础 Section 结构 */
        .section-block {
            padding: 90px 48px;
            position: relative;
        }

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

        .section-light {
            background-color: #FFFFFF;
            color: var(--text-main);
        }

        .section-gray {
            background-color: var(--light-bg);
            color: var(--text-main);
        }

        .section-header {
            margin-bottom: 50px;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .section-dark .section-tag {
            background: rgba(0, 200, 83, 0.16);
            color: var(--primary);
            border: 1px solid rgba(0, 200, 83, 0.3);
        }

        .section-light .section-tag,
        .section-gray .section-tag {
            background: rgba(0, 176, 255, 0.1);
            color: #0288D1;
            border: 1px solid rgba(0, 176, 255, 0.2);
        }

        .section-title {
            font-size: 2.1rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 1.05rem;
            max-width: 780px;
            line-height: 1.7;
        }

        .section-dark .section-subtitle {
            color: var(--text-muted);
        }

        .section-light .section-subtitle,
        .section-gray .section-subtitle {
            color: var(--text-secondary);
        }

        /* 1. Hero 区域 */
        .hero-section {
            padding: 100px 48px 80px;
            background: linear-gradient(135deg, rgba(11, 14, 20, 0.94) 0%, rgba(21, 27, 38, 0.88) 100%),
                        url('/assets/images/181c0258be8d406e.png') center/cover no-repeat;
            color: #FFFFFF;
            position: relative;
            border-bottom: 1px solid rgba(0, 200, 83, 0.2);
        }

        .countdown-strip {
            display: inline-flex;
            align-items: center;
            gap: 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            padding: 8px 18px;
            border-radius: 40px;
            margin-bottom: 28px;
            font-size: 0.85rem;
        }

        .countdown-strip .badge-hot {
            background: var(--accent);
            color: #FFFFFF;
            padding: 2px 8px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.75rem;
        }

        .hero-title {
            font-size: 2.85rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 22px;
            letter-spacing: -0.5px;
        }

        .hero-title span {
            background: linear-gradient(90deg, #00C853, #00B0FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: #D1D5DB;
            max-width: 820px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .btn-prime {
            background: var(--primary);
            color: #FFFFFF;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 6px 20px rgba(0, 200, 83, 0.35);
        }

        .btn-prime:hover {
            background: var(--primary-hover);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        .btn-secondary-outline {
            background: transparent;
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.25);
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 8px;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-secondary-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #FFFFFF;
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        /* 2. 统计指标条 */
        .metrics-bar-section {
            background: #0F141D;
            padding: 40px 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .metric-item {
            text-align: center;
            padding: 12px;
        }

        .metric-value {
            font-size: 2.6rem;
            font-weight: 800;
            color: #FFFFFF;
            font-family: "DIN Alternate", "Roboto Mono", monospace, sans-serif;
            line-height: 1;
            margin-bottom: 8px;
        }

        .metric-value span {
            color: var(--primary);
            font-size: 1.6rem;
        }

        .metric-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* 卡片通用 */
        .tech-card {
            background: #FFFFFF;
            border: 1px solid rgba(0, 0, 0, 0.06);
            border-radius: 12px;
            padding: 32px 26px;
            transition: all 0.25s ease-in-out;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .tech-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
            border-color: rgba(0, 200, 83, 0.3);
        }

        .card-dark {
            background: var(--dark-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            color: #FFFFFF;
        }

        .card-dark:hover {
            border-color: var(--dark-border);
            box-shadow: 0 12px 30px rgba(0, 200, 83, 0.12);
        }

        .card-icon-box {
            width: 52px;
            height: 52px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 20px;
        }

        .icon-green {
            background: rgba(0, 200, 83, 0.12);
            color: var(--primary);
        }

        .icon-blue {
            background: rgba(0, 176, 255, 0.12);
            color: var(--secondary);
        }

        .icon-orange {
            background: rgba(255, 109, 0, 0.12);
            color: var(--accent);
        }

        .card-heading {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .card-text {
            font-size: 0.94rem;
            color: var(--text-secondary);
            line-height: 1.65;
            flex-grow: 1;
        }

        .card-dark .card-text {
            color: #9CA3AF;
        }

        .card-meta-tag {
            font-size: 0.78rem;
            font-weight: 600;
            padding: 3px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-top: 14px;
        }

        /* 3. 架构底座 */
        .arch-benchmark-box {
            background: var(--dark-card);
            border: 1px solid var(--dark-border);
            border-radius: 12px;
            padding: 32px;
            color: #FFFFFF;
        }

        .benchmark-row {
            display: flex;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.95rem;
        }

        .benchmark-row:last-child {
            border-bottom: none;
        }

        .benchmark-val {
            font-weight: 700;
            color: var(--primary);
            font-family: monospace;
        }

        /* 6. 大屏仿真展示 */
        .showcase-stage {
            background: #090C10;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            padding: 24px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
        }

        .stage-control-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 16px;
            margin-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .mac-dots {
            display: flex;
            gap: 6px;
        }

        .mac-dots span {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            display: inline-block;
        }

        .mac-dot-red { background: #FF5F56; }
        .mac-dot-yellow { background: #FFBD2E; }
        .mac-dot-green { background: #27C93F; }

        .terminal-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 16px;
        }

        .terminal-box {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 8px;
            padding: 16px;
            color: #E5E7EB;
        }

        .bar-chart-mock {
            display: flex;
            align-items: flex-end;
            gap: 10px;
            height: 140px;
            padding-top: 20px;
        }

        .bar-col {
            flex: 1;
            background: linear-gradient(180deg, var(--primary) 0%, rgba(0, 200, 83, 0.2) 100%);
            border-radius: 4px 4px 0 0;
            position: relative;
        }

        /* 资质墙 */
        .badge-cert-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .cert-item {
            background: #FFFFFF;
            border: 1px solid rgba(0, 0, 0, 0.08);
            border-radius: 10px;
            padding: 24px;
            text-align: center;
        }

        .cert-item i {
            font-size: 2.2rem;
            color: var(--secondary);
            margin-bottom: 12px;
        }

        .cert-name {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 6px;
        }

        .cert-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 流程步骤 */
        .step-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .step-item {
            background: var(--dark-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            padding: 28px 20px;
            position: relative;
        }

        .step-number {
            font-size: 2.5rem;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.08);
            position: absolute;
            top: 14px;
            right: 18px;
            line-height: 1;
            font-family: monospace;
        }

        .step-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 10px;
        }

        .step-desc {
            font-size: 0.9rem;
            color: #9CA3AF;
            line-height: 1.6;
        }

        /* 定价卡片 */
        .pricing-card {
            background: #FFFFFF;
            border-radius: 14px;
            padding: 36px 30px;
            border: 1px solid rgba(0, 0, 0, 0.08);
            position: relative;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .pricing-card.featured {
            border: 2px solid var(--primary);
            box-shadow: 0 10px 40px rgba(0, 200, 83, 0.15);
            transform: scale(1.02);
        }

        .pricing-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #FFFFFF;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            text-transform: uppercase;
        }

        .price-title {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .price-subtitle {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .feature-checklist {
            list-style: none;
            margin: 20px 0 32px;
            flex-grow: 1;
        }

        .feature-checklist li {
            font-size: 0.92rem;
            padding: 8px 0;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
        }

        .feature-checklist li i {
            color: var(--primary);
            font-size: 0.9rem;
        }

        /* 评价墙 */
        .testimonial-card {
            background: #FFFFFF;
            border: 1px solid rgba(0, 0, 0, 0.06);
            border-radius: 12px;
            padding: 28px;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .quote-text {
            font-size: 0.95rem;
            line-height: 1.7;
            color: #374151;
            margin-bottom: 20px;
            font-style: italic;
        }

        .user-profile {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .avatar-placeholder {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: #E5E7EB;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #4B5563;
        }

        .user-name {
            font-weight: 700;
            font-size: 0.95rem;
        }

        .user-role {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* 资讯精选 */
        .news-item-card {
            background: #FFFFFF;
            border: 1px solid rgba(0, 0, 0, 0.06);
            border-radius: 12px;
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .news-img-box {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .news-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .news-item-card:hover .news-img-box img {
            transform: scale(1.05);
        }

        .news-body {
            padding: 22px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .news-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .news-heading {
            font-size: 1.15rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .news-brief {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex-grow: 1;
        }

        /* 获客表单收口 */
        .inquiry-panel {
            background: linear-gradient(135deg, #111827 0%, #1F2937 100%);
            border: 1px solid rgba(0, 200, 83, 0.3);
            border-radius: 16px;
            padding: 48px;
            color: #FFFFFF;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
        }

        .form-control-custom {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
            border-radius: 6px;
            padding: 12px 14px;
            font-size: 0.95rem;
            width: 100%;
            margin-bottom: 16px;
        }

        .form-control-custom:focus {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 2px rgba(0, 200, 83, 0.25);
        }

        /* 页脚 */
        .site-footer {
            background: var(--dark-bg);
            color: #9CA3AF;
            padding: 60px 48px 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.9rem;
        }

        .footer-brand-title {
            color: #FFFFFF;
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .footer-links-list {
            list-style: none;
        }

        .footer-links-list li {
            margin-bottom: 8px;
        }

        .footer-links-list a:hover {
            color: var(--primary);
        }

        .footer-bottom-bar {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
        }

        /* 响应式调整 */
        @media screen and (max-width: 1023px) {
            .desktop-sidebar {
                display: none;
            }
            .mobile-topbar {
                display: flex;
            }
            .main-wrapper {
                margin-left: 0;
                padding-top: 64px;
            }
            .section-block {
                padding: 60px 20px;
            }
            .hero-section {
                padding: 60px 20px;
            }
            .hero-title {
                font-size: 2.1rem;
            }
            .badge-cert-grid,
            .step-timeline {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-bottom-bar {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }

        @media screen and (max-width: 639px) {
            .badge-cert-grid,
            .step-timeline {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .pricing-card.featured {
                transform: none;
            }
            .inquiry-panel {
                padding: 24px;
            }
        }