/* roulang page: index */
:root {
            --bg-deep: #0b1015;
            --bg-surface: #121820;
            --bg-card: #16202c;
            --bg-card-hover: #1c2938;
            --primary-neon: #00f59b;
            --primary-neon-dim: rgba(0, 245, 155, 0.15);
            --primary-neon-glow: rgba(0, 245, 155, 0.35);
            --radar-cyan: #00b4d8;
            --alert-orange: #ff6b35;
            --text-light: #ffffff;
            --text-muted: #8a99a8;
            --text-dim: #556575;
            --border-tech: rgba(0, 245, 155, 0.18);
            --border-subtle: rgba(255, 255, 255, 0.08);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
            --transition-smooth: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* 基础重置 */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            background-color: var(--bg-deep);
            color: var(--text-light);
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
        }

        body {
            background-color: var(--bg-deep);
            color: var(--text-light);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover, a:focus {
            color: var(--primary-neon);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        /* 数字排版统一 */
        .tech-number, .stat-value {
            font-variant-numeric: tabular-nums;
            font-feature-settings: "tnum";
            letter-spacing: -0.5px;
        }

        /* 顶部实用工具条 Utility Bar */
        .utility-bar {
            background-color: #06090d;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 0.8125rem;
            color: var(--text-muted);
            padding: 7px 0;
            z-index: 1010;
        }
        .utility-status-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background-color: var(--primary-neon);
            border-radius: 50%;
            margin-right: 6px;
            box-shadow: 0 0 8px var(--primary-neon);
            animation: pulse-dot 2s infinite ease-in-out;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.85); }
        }
        .utility-links a {
            margin-left: 20px;
            color: var(--text-muted);
        }
        .utility-links a:hover {
            color: var(--primary-neon);
        }

        /* 主导航条 Primary Navigation */
        .primary-nav-wrapper {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 16, 21, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-tech);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: 0.5px;
        }
        .brand-logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary-neon), var(--radar-cyan));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-deep);
            font-size: 1.15rem;
            box-shadow: 0 0 15px var(--primary-neon-glow);
        }
        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 24px;
            margin: 0;
        }
        .nav-link-item a {
            font-size: 0.9375rem;
            color: var(--text-muted);
            font-weight: 500;
            padding: 8px 4px;
            position: relative;
        }
        .nav-link-item a:hover,
        .nav-link-item.active a {
            color: var(--primary-neon);
        }
        .nav-link-item a::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-neon);
            transition: var(--transition-smooth);
        }
        .nav-link-item a:hover::after,
        .nav-link-item.active a::after {
            width: 100%;
        }

        /* 按钮系统 */
        .btn-neon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--primary-neon);
            color: #05100b;
            font-size: 0.9375rem;
            font-weight: 700;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--primary-neon);
            cursor: pointer;
            box-shadow: 0 0 16px var(--primary-neon-glow);
            transition: var(--transition-smooth);
        }
        .btn-neon:hover {
            background-color: #1affab;
            color: #030806;
            box-shadow: 0 0 24px var(--primary-neon);
            transform: translateY(-2px);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--text-light);
            font-size: 0.9375rem;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: var(--transition-smooth);
        }
        .btn-ghost:hover {
            border-color: var(--primary-neon);
            color: var(--primary-neon);
            background: rgba(0, 245, 155, 0.05);
        }

        /* 面包屑跟踪条 Breadcrumb Tracker */
        .breadcrumb-bar {
            background-color: #0d141b;
            border-bottom: 1px solid var(--border-subtle);
            padding: 8px 0;
            font-size: 0.8125rem;
            color: var(--text-muted);
        }
        .breadcrumb-trail {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
        }
        .breadcrumb-trail li + li::before {
            content: "/";
            color: var(--text-dim);
            margin-right: 8px;
        }
        .breadcrumb-trail .current-node {
            color: var(--primary-neon);
        }

        /* 通用 Section 样式规范 */
        .section-block {
            padding: 80px 0;
            position: relative;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .section-alt {
            background-color: var(--bg-surface);
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8125rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--primary-neon);
            background: var(--primary-neon-dim);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 12px;
            border: 1px solid rgba(0, 245, 155, 0.3);
        }
        .section-title {
            font-size: 2.125rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-subtitle {
            font-size: 1.0625rem;
            color: var(--text-muted);
            max-width: 780px;
            line-height: 1.7;
        }

        /* 卡片基础系统 */
        .tech-card {
            background-color: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-md);
            padding: 30px;
            height: 100%;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .tech-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--primary-neon), transparent);
            opacity: 0;
            transition: var(--transition-smooth);
        }
        .tech-card:hover {
            transform: translateY(-5px);
            border-color: var(--border-tech);
            background-color: var(--bg-card-hover);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45);
        }
        .tech-card:hover::before {
            opacity: 1;
        }

        /* 板块 1: Hero 检索与中枢感知区 */
        .hero-section {
            padding: 90px 0 80px;
            background: radial-gradient(circle at 50% 20%, rgba(0, 245, 155, 0.08), transparent 70%),
                        linear-gradient(180deg, #0b1015 0%, #101720 100%);
            position: relative;
            border-bottom: 1px solid var(--border-tech);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 245, 155, 0.08);
            border: 1px solid rgba(0, 245, 155, 0.25);
            padding: 6px 16px;
            border-radius: 30px;
            color: var(--primary-neon);
            font-size: 0.875rem;
            margin-bottom: 24px;
        }
        .hero-h1 {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 20px;
            background: linear-gradient(180deg, #ffffff 40%, #b0c2d4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 1.125rem;
            color: var(--text-muted);
            max-width: 820px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-search-box {
            max-width: 700px;
            margin: 0 auto 28px;
            position: relative;
        }
        .hero-input {
            width: 100%;
            height: 56px;
            background: rgba(18, 24, 32, 0.95);
            border: 1px solid rgba(0, 245, 155, 0.3);
            border-radius: 8px;
            padding: 0 140px 0 24px;
            color: var(--text-light);
            font-size: 1rem;
            outline: none;
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
            transition: var(--transition-smooth);
        }
        .hero-input:focus {
            border-color: var(--primary-neon);
            box-shadow: 0 0 16px var(--primary-neon-glow);
        }
        .hero-search-btn {
            position: absolute;
            right: 6px;
            top: 6px;
            bottom: 6px;
            background: var(--primary-neon);
            color: #05100b;
            font-weight: 700;
            border: none;
            padding: 0 22px;
            border-radius: 6px;
            cursor: pointer;
            transition: var(--transition-smooth);
        }
        .hero-chips-bar {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 36px;
            font-size: 0.875rem;
        }
        .chip-label {
            color: var(--text-dim);
        }
        .tech-chip {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-muted);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8125rem;
            transition: var(--transition-smooth);
        }
        .tech-chip:hover {
            color: var(--primary-neon);
            border-color: var(--primary-neon);
            background: var(--primary-neon-dim);
        }
        .hero-visual-card {
            margin-top: 40px;
            background: #0f161e;
            border: 1px solid var(--border-tech);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0,0,0,0.6);
        }
        .hero-terminal-bar {
            background: #090e13;
            padding: 10px 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .term-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            display: inline-block;
        }
        .term-dot.red { background: #ff5f56; }
        .term-dot.yellow { background: #ffbd2e; }
        .term-dot.green { background: #27c93f; }

        /* 板块 2: 内容日历 / 算力管线 */
        .pipeline-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-sm);
            padding: 24px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: var(--transition-smooth);
        }
        .pipeline-card:hover {
            border-color: var(--primary-neon);
            transform: translateX(4px);
        }
        .pipeline-step-badge {
            width: 36px;
            height: 36px;
            background: var(--primary-neon-dim);
            color: var(--primary-neon);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        /* 板块 6: 数字化控制台仿真 */
        .console-mockup {
            background: #0a0f14;
            border: 1px solid var(--border-tech);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.7);
        }
        .console-topbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            margin-bottom: 16px;
        }
        .console-screen-grid {
            display: grid;
            grid-template-columns: 280px 1fr 280px;
            gap: 16px;
        }
        .console-widget {
            background: #111821;
            border: 1px solid rgba(255,255,255,0.05);
            border-radius: 6px;
            padding: 16px;
        }
        .metric-row {
            display: flex;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px dashed rgba(255,255,255,0.06);
            font-size: 0.875rem;
        }

        /* 板块 7: 深色极端哲学 */
        .extreme-philosophy-box {
            background: #06090c;
            border: 1px solid rgba(0, 245, 155, 0.2);
            border-radius: var(--radius-md);
            padding: 48px;
            position: relative;
        }

        /* 板块 9: 关键数据条 */
        .metrics-banner {
            background: linear-gradient(90deg, #0d1620 0%, #131e2b 100%);
            border-top: 1px solid var(--border-tech);
            border-bottom: 1px solid var(--border-tech);
            padding: 60px 0;
        }
        .counter-card {
            text-align: center;
            padding: 20px;
        }
        .counter-val {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-neon);
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .counter-txt {
            font-size: 0.9375rem;
            color: var(--text-muted);
        }

        /* 板块 11: 价格套餐 */
        .pricing-card {
            background: var(--bg-card);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius-md);
            padding: 36px 30px;
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
            transition: var(--transition-smooth);
        }
        .pricing-card.featured {
            border: 2px solid var(--primary-neon);
            background: #15222e;
            box-shadow: 0 0 30px rgba(0, 245, 155, 0.2);
        }
        .pricing-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--primary-neon);
            color: #041009;
            font-size: 0.75rem;
            font-weight: 800;
            padding: 4px 10px;
            border-radius: 4px;
        }
        .pricing-price {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-light);
            margin: 16px 0 24px;
        }
        .pricing-features-list {
            list-style: none;
            margin: 0 0 32px 0;
            flex-grow: 1;
        }
        .pricing-features-list li {
            font-size: 0.9375rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .pricing-features-list li i {
            color: var(--primary-neon);
        }

        /* 板块 13: Foundation Accordion 定制 */
        .tech-accordion {
            background: transparent;
            border: none;
            list-style: none;
            margin: 0;
        }
        .tech-accordion-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition-smooth);
        }
        .tech-accordion-item:hover {
            border-color: var(--primary-neon);
        }
        .tech-accordion-title {
            padding: 20px 24px;
            color: var(--text-light);
            font-size: 1.0625rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }
        .tech-accordion-content {
            display: none;
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 0.9375rem;
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .tech-accordion-item.is-active .tech-accordion-content {
            display: block;
        }
        .tech-accordion-item.is-active .tech-accordion-title {
            color: var(--primary-neon);
        }

        /* 板块 14: 底部转化表单 */
        .cta-container {
            background: radial-gradient(circle at 50% 50%, rgba(0, 245, 155, 0.12), transparent 75%), #111a24;
            border: 1px solid var(--border-tech);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
        }
        .cta-form-input, .cta-form-select {
            width: 100%;
            height: 48px;
            background: rgba(10, 15, 20, 0.85);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 6px;
            color: var(--text-light);
            padding: 0 16px;
            font-size: 0.9375rem;
            margin-bottom: 16px;
            outline: none;
            transition: var(--transition-smooth);
        }
        .cta-form-input:focus, .cta-form-select:focus {
            border-color: var(--primary-neon);
            box-shadow: 0 0 12px var(--primary-neon-glow);
        }

        /* 全局页脚 Footer */
        .site-footer {
            background-color: #06090d;
            border-top: 1px solid var(--border-subtle);
            padding: 70px 0 30px;
            font-size: 0.875rem;
            color: var(--text-muted);
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--primary-neon);
        }
        .footer-links-list {
            list-style: none;
            margin: 0;
        }
        .footer-links-list li {
            margin-bottom: 10px;
        }
        .footer-links-list a {
            color: var(--text-muted);
        }
        .footer-links-list a:hover {
            color: var(--primary-neon);
            padding-left: 4px;
        }
        .footer-bottom-bar {
            margin-top: 50px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
            font-size: 0.8125rem;
            color: var(--text-dim);
        }

        /* 响应式调整 */
        @media screen and (max-width: 1024px) {
            .hero-h1 { font-size: 2.35rem; }
            .console-screen-grid { grid-template-columns: 1fr; }
            .nav-links { gap: 14px; }
        }
        @media screen and (max-width: 768px) {
            .nav-links { display: none; }
            .hero-h1 { font-size: 1.875rem; }
            .hero-desc { font-size: 1rem; }
            .section-title { font-size: 1.625rem; }
            .utility-links { display: none; }
            .counter-val { font-size: 2.25rem; }
            .cta-container { padding: 32px 20px; }
            .extreme-philosophy-box { padding: 24px; }
        }