:root {
            --primary: #1677FF;
            --primary-dark: #0958D9;
            --primary-light: #4096FF;
            --bg-dark: #0B1120;
            --bg-darker: #060A14;
            --bg-light: #F5F7FA;
            --text-primary: #1A1A2E;
            --text-secondary: #5A6074;
            --text-light: #8C929D;
            --border: #E5E8EF;
            --white: #FFFFFF;
            --gradient-hero: linear-gradient(135deg, #0B1120 0%, #0D1B3E 50%, #0B1120 100%);
            --gradient-accent: linear-gradient(135deg, #1677FF 0%, #4096FF 100%);
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-glow: 0 0 40px rgba(22,119,255,0.15);
        }

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

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

        body {
            font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            color: var(--text-primary);
            background: var(--white);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-light); }
        ::-webkit-scrollbar-thumb { background: #C0C4CC; border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: #909399; }

        /* ===== Navbar ===== */
        .navbar {
            position: fixed;
            top: 0; left: 0; right: 0;
            z-index: 1000;
            height: 64px;
            background: rgba(11,17,32,0.95);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: all 0.3s ease;
        }

        .navbar.scrolled {
            background: rgba(11,17,32,0.98);
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }

        .navbar-inner {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .nav-left { display: flex; align-items: center; gap: 40px; }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--white);
            font-size: 20px;
            font-weight: 700;
            letter-spacing: -0.5px;
        }

        .logo-icon {
            width: 32px; height: 32px;
            background: var(--gradient-accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 32px;
        }

        .nav-menu a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s;
            position: relative;
        }

        .nav-menu a:hover, .nav-menu a.active {
            color: var(--white);
        }

        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -4px; left: 0;
            width: 0; height: 2px;
            background: var(--primary);
            transition: width 0.3s;
        }

        .nav-menu a:hover::after { width: 100%; }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .nav-search {
            width: 200px;
            height: 36px;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 6px;
            display: flex;
            align-items: center;
            padding: 0 12px;
            gap: 8px;
            color: rgba(255,255,255,0.5);
            font-size: 13px;
            cursor: pointer;
            transition: all 0.3s;
        }

        .nav-search:hover {
            background: rgba(255,255,255,0.12);
            border-color: rgba(255,255,255,0.2);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s;
            border: none;
            text-decoration: none;
        }

        .btn-ghost {
            background: transparent;
            color: var(--white);
            border: 1px solid rgba(255,255,255,0.2);
        }

        .btn-ghost:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(255,255,255,0.3);
        }

        .btn-primary {
            background: var(--gradient-accent);
            color: var(--white);
            box-shadow: 0 4px 14px rgba(22,119,255,0.35);
        }

        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(22,119,255,0.45);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 5px;
        }

        .mobile-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--white);
            transition: all 0.3s;
        }

        /* ===== Hero Section ===== */
        .hero {
            min-height: 100vh;
            background: var(--gradient-hero);
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            padding-top: 64px;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background:
                radial-gradient(ellipse 80% 50% at 20% 50%, rgba(22,119,255,0.08) 0%, transparent 50%),
                radial-gradient(ellipse 60% 40% at 80% 30%, rgba(64,150,255,0.06) 0%, transparent 50%);
            pointer-events: none;
        }

        /* Animated grid lines */
        .hero-grid {
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background-image:
                linear-gradient(rgba(22,119,255,0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(22,119,255,0.03) 1px, transparent 1px);
            background-size: 60px 60px;
            animation: gridMove 20s linear infinite;
            pointer-events: none;
        }

        @keyframes gridMove {
            0% { transform: perspective(500px) rotateX(60deg) translateY(0); }
            100% { transform: perspective(500px) rotateX(60deg) translateY(60px); }
        }

        .hero-particles {
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            pointer-events: none;
            overflow: hidden;
        }

        .particle {
            position: absolute;
            width: 4px; height: 4px;
            background: var(--primary);
            border-radius: 50%;
            opacity: 0.3;
            animation: float 8s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0) scale(1); opacity: 0.3; }
            50% { transform: translateY(-30px) scale(1.5); opacity: 0.6; }
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 0 24px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(22,119,255,0.12);
            border: 1px solid rgba(22,119,255,0.2);
            border-radius: 100px;
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 32px;
            animation: fadeInUp 0.6s ease;
        }

        .hero-badge .dot {
            width: 6px; height: 6px;
            background: #52C41A;
            border-radius: 50%;
            animation: pulse 2s ease infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        .hero h1 {
            font-size: clamp(36px, 5vw, 60px);
            font-weight: 700;
            color: var(--white);
            line-height: 1.15;
            margin-bottom: 24px;
            letter-spacing: -1px;
            animation: fadeInUp 0.6s ease 0.1s both;
        }

        .hero h1 span {
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: clamp(16px, 2vw, 20px);
            color: rgba(255,255,255,0.65);
            line-height: 1.7;
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            animation: fadeInUp 0.6s ease 0.2s both;
        }

        .hero-cta {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            animation: fadeInUp 0.6s ease 0.3s both;
        }

        .hero-cta .btn {
            padding: 14px 36px;
            font-size: 16px;
            font-weight: 600;
        }

        .hero-cta .btn-ghost {
            border-color: rgba(255,255,255,0.25);
            color: var(--white);
        }

        .hero-cta .btn-ghost:hover {
            background: rgba(255,255,255,0.1);
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 60px;
            margin-top: 80px;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.08);
            animation: fadeInUp 0.6s ease 0.5s both;
        }

        .hero-stat {
            text-align: center;
        }

        .hero-stat .num {
            font-size: 36px;
            font-weight: 700;
            color: var(--white);
            line-height: 1;
        }

        .hero-stat .num span { color: var(--primary-light); }

        .hero-stat .label {
            font-size: 13px;
            color: rgba(255,255,255,0.5);
            margin-top: 8px;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== Section Common ===== */
        section { padding: 100px 0; }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .section-header h2 {
            font-size: clamp(28px, 3.5vw, 40px);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .section-header p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto;
        }

        /* ===== Products Section ===== */
        .products { background: var(--white); }

        .product-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
            gap: 24px;
        }

        .product-card {
            padding: 32px;
            border-radius: 16px;
            border: 1px solid var(--border);
            background: var(--white);
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .product-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 3px;
            background: var(--gradient-accent);
            transform: scaleX(0);
            transition: transform 0.4s ease;
        }

        .product-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .product-card:hover::before { transform: scaleX(1); }

        .product-icon {
            width: 48px; height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
        }

        .product-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .product-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .product-tags {
            display: flex;
            gap: 8px;
            margin-top: 16px;
            flex-wrap: wrap;
        }

        .product-tag {
            padding: 4px 10px;
            background: var(--bg-light);
            border-radius: 4px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* Icon backgrounds */
        .icon-blue { background: rgba(22,119,255,0.1); color: var(--primary); }
        .icon-cyan { background: rgba(6,182,212,0.1); color: #06B6D4; }
        .icon-green { background: rgba(34,197,94,0.1); color: #22C55E; }
        .icon-purple { background: rgba(139,92,246,0.1); color: #8B5CF6; }
        .icon-orange { background: rgba(249,115,22,0.1); color: #F97316; }
        .icon-pink { background: rgba(236,72,153,0.1); color: #EC4899; }

        /* ===== Solutions Section ===== */
        .solutions {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }

        .solutions::before {
            content: '';
            position: absolute;
            top: -50%; right: -20%;
            width: 600px; height: 600px;
            background: radial-gradient(circle, rgba(22,119,255,0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .solutions .section-header h2,
        .solutions .section-header p { color: var(--white); }
        .solutions .section-header p { opacity: 0.65; }

        .solution-tabs {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }

        .solution-tab {
            padding: 10px 24px;
            border-radius: 8px;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.6);
            border: 1px solid rgba(255,255,255,0.08);
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s;
        }

        .solution-tab:hover { background: rgba(255,255,255,0.1); }

        .solution-tab.active {
            background: var(--gradient-accent);
            color: var(--white);
            border-color: transparent;
            box-shadow: 0 4px 14px rgba(22,119,255,0.35);
        }

        .solution-content {
            display: none;
            animation: fadeIn 0.5s ease;
        }

        .solution-content.active { display: block; }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .solution-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .solution-info h3 {
            font-size: 28px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 16px;
        }

        .solution-info p {
            font-size: 15px;
            color: rgba(255,255,255,0.6);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .solution-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-bottom: 32px;
        }

        .solution-feature {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255,255,255,0.7);
        }

        .solution-feature .check {
            width: 20px; height: 20px;
            background: rgba(82,196,26,0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #52C41A;
            font-size: 12px;
            flex-shrink: 0;
        }

        .solution-visual {
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(255,255,255,0.06);
            border-radius: 16px;
            padding: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 320px;
            position: relative;
            overflow: hidden;
        }

        .solution-visual::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(ellipse at center, rgba(22,119,255,0.05) 0%, transparent 70%);
        }

        .solution-img {
            width: 100%;
            max-width: 400px;
            position: relative;
            z-index: 1;
        }

        /* Stats Bar */
        .stats-bar {
            background: var(--bg-light);
            padding: 60px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }

        .stat-item {
            text-align: center;
            padding: 24px;
        }

        .stat-item .num {
            font-size: 42px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-item .label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* ===== Trust / Partners ===== */
        .trust { background: var(--white); }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 24px;
            margin-top: 48px;
        }

        .trust-logo {
            height: 80px;
            border: 1px solid var(--border);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-light);
            transition: all 0.3s;
            background: var(--white);
        }

        .trust-logo:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        /* ===== Cases ===== */
        .cases { background: var(--bg-light); }

        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .case-card {
            background: var(--white);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all 0.4s ease;
        }

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

        .case-img {
            height: 180px;
            background: var(--gradient-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 18px;
            font-weight: 600;
            position: relative;
            overflow: hidden;
        }

        .case-img::after {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: linear-gradient(135deg, transparent 0%, rgba(0,0,0,0.2) 100%);
        }

        .case-body {
            padding: 24px;
        }

        .case-body h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .case-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .case-tag {
            display: inline-block;
            padding: 3px 10px;
            background: var(--bg-light);
            border-radius: 4px;
            font-size: 12px;
            color: var(--primary);
            margin-top: 12px;
            font-weight: 500;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--gradient-hero);
            position: relative;
            overflow: hidden;
            padding: 100px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(ellipse 50% 50% at 50% 50%, rgba(22,119,255,0.1) 0%, transparent 60%);
        }

        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: clamp(28px, 3.5vw, 40px);
            font-weight: 700;
            color: var(--white);
            margin-bottom: 16px;
        }

        .cta-content p {
            font-size: 17px;
            color: rgba(255,255,255,0.65);
            margin-bottom: 32px;
        }

        .cta-content .btn {
            padding: 14px 40px;
            font-size: 16px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-darker);
            color: rgba(255,255,255,0.6);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr repeat(4, 1fr);
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255,255,255,0.4);
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--white);
            margin-bottom: 20px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col li { margin-bottom: 12px; }

        .footer-col a {
            color: rgba(255,255,255,0.5);
            text-decoration: none;
            font-size: 13px;
            transition: color 0.3s;
        }

        .footer-col a:hover { color: var(--white); }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-bottom p {
            font-size: 12px;
            color: rgba(255,255,255,0.3);
        }

        .footer-links {
            display: flex;
            gap: 24px;
        }

        .footer-links a {
            font-size: 12px;
            color: rgba(255,255,255,0.3);
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-links a:hover { color: rgba(255,255,255,0.6); }

        /* ===== Scroll Animation ===== */
        .reveal {
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.8s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Mobile Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .solution-card { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .nav-menu, .nav-search { display: none; }
            .mobile-toggle { display: flex; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat .num { font-size: 28px; }
            .product-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* Mobile menu overlay */
        .mobile-menu {
            position: fixed;
            top: 64px; left: 0; right: 0; bottom: 0;
            background: var(--bg-dark);
            z-index: 999;
            padding: 32px 24px;
            display: none;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-menu.open { display: flex; }

        .mobile-menu a {
            padding: 16px;
            color: var(--white);
            text-decoration: none;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }

        /* Floating particles generation via JS */