:root {
            --primary: #1a73e8;
            --primary-dark: #1557b0;
            --accent: #00c4a1;
            --accent-dark: #00a88c;
            --bg-dark: #0f1b2d;
            --bg-section: #f7f9fc;
            --text-dark: #1a2332;
            --text-mid: #4a5568;
            --text-light: #ffffff;
            --nav-height: 72px;
            --card-shadow: 0 4px 24px rgba(0,0,0,0.08);
            --radius: 16px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            color: var(--text-dark);
            background: #fff;
            line-height: 1.7;
            overflow-x: hidden;
            padding-top: var(--nav-height);
        }

        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }

        /* ==================== NAVIGATION ==================== */
        .navbar {
            position: fixed;
            top: 0; left: 0; right: 0;
            height: var(--nav-height);
            background: rgba(15, 27, 45, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 1000;
            transition: all 0.3s ease;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }

        .navbar.scrolled {
            background: rgba(15, 27, 45, 0.98);
            box-shadow: 0 4px 30px rgba(0,0,0,0.3);
        }

        .nav-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            /* background: linear-gradient(135deg, var(--primary), var(--accent)); */
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .nav-logo .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.8;
        }

        .nav-logo .logo-main {
            font-size: 17px;
            font-weight: 800;
            letter-spacing: -0.5px;
			
        }

        .nav-logo .logo-sub {
            font-size: 10px;
            color: rgba(255,255,255,0.5);
            font-weight: 500;
            letter-spacing: 0.5px;
        }

        /* Desktop Nav Links */
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links a {
            color: rgba(255,255,255,0.7);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 8px;
            transition: all 0.25s ease;
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: #fff;
            background: rgba(255,255,255,0.08);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
        }

        .nav-cta {
            margin-left: 12px;
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff !important;
            border-radius: 10px;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 20px rgba(26,115,232,0.4);
        }

        /* Hamburger Menu Button */
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            cursor: pointer;
            -webkit-tap-highlight-color: transparent;
            z-index: 1001;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all 0.3s ease;
            margin: 3px 0;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Mobile Menu Overlay */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(15, 27, 45, 0.98);
            backdrop-filter: blur(30px);
            -webkit-backdrop-filter: blur(30px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 8px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.35s ease;
        }

        .mobile-menu.active {
            opacity: 1;
            pointer-events: all;
        }

        .mobile-menu a {
            color: rgba(255,255,255,0.75);
            font-size: 20px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 12px;
            transition: all 0.25s ease;
            width: 280px;
            text-align: center;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: #fff;
            background: rgba(255,255,255,0.08);
        }

        .mobile-menu .nav-cta-mobile {
            margin-top: 16px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff !important;
            padding: 14px 40px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 17px;
        }

        /* ==================== RIGHT FLOATING WIDGET ==================== */
        .float-widget {
            position: fixed;
            right: 24px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            animation: floatWidgetIn 0.6s ease 1s both;
        }

        @keyframes floatWidgetIn {
            from { opacity: 0; transform: translateY(-50%) translateX(20px); }
            to   { opacity: 1; transform: translateY(-50%) translateX(0); }
        }

        .float-widget-card {
            width: 200px;
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 8px 40px rgba(0,0,0,0.12), 0 0 0 1px rgba(0,0,0,0.04);
            padding: 24px 20px 20px;
            text-align: center;
            position: relative;
            transition: all 0.3s ease;
        }

        .float-widget-card:hover {
            box-shadow: 0 12px 50px rgba(26,115,232,0.18), 0 0 0 1px rgba(26,115,232,0.1);
            transform: translateY(-2px);
        }

        .float-widget-close {
            position: absolute;
            top: 8px;
            right: 10px;
            width: 24px;
            height: 24px;
            border: none;
            background: rgba(0,0,0,0.06);
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: #999;
            transition: all 0.2s ease;
            line-height: 1;
            padding: 0;
        }

        .float-widget-close:hover {
            background: rgba(0,0,0,0.12);
            color: #333;
        }

        .float-widget-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: linear-gradient(135deg, #e8f7ee, #d0f0e0);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            margin: 0 auto 12px;
        }

        .float-widget-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .float-widget-desc {
            font-size: 12px;
            color: var(--text-mid);
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .float-widget-qr {
            width: 120px;
            height: 120px;
            margin: 0 auto 14px;
            border-radius: 12px;
            background: linear-gradient(135deg, #f0f0f0, #e8e8e8);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 6px;
            color: var(--text-mid);
            font-size: 11px;
        }

        .float-widget-qr .qr-placeholder {
            width: 80px;
            height: 80px;
            background: #fff;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 36px;
            border: 2px dashed #ccc;
        }

        .float-widget-phone {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 16px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 700;
            text-decoration: none;
            transition: all 0.3s ease;
            letter-spacing: 0.5px;
        }

        .float-widget-phone:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 20px rgba(26,115,232,0.4);
            color: #fff;
        }

        .float-widget-phone .phone-icon {
            font-size: 16px;
        }

        /* Hidden state */
        .float-widget.hidden {
            opacity: 0;
            pointer-events: none;
            transform: translateY(-50%) translateX(30px);
        }

        /* ==================== HERO ==================== */
        .hero {
            position: relative;
            min-height: calc(100vh - var(--nav-height));
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, #0f1b2d 0%, #1a365d 50%, #1e4d8c 100%);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(26,115,232,0.3) 0%, transparent 70%);
            top: -200px;
            right: -100px;
            border-radius: 50%;
            animation: float 8s ease-in-out infinite;
        }

        .hero::after {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0,196,161,0.2) 0%, transparent 70%);
            bottom: -100px;
            left: -50px;
            border-radius: 50%;
            animation: float 10s ease-in-out infinite reverse;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0) scale(1); }
            50% { transform: translateY(-30px) scale(1.05); }
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            padding: 0 24px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: 50px;
            padding: 8px 20px;
            color: #fff;
            font-size: 14px;
            margin-bottom: 32px;
            animation: fadeInUp 0.8s ease;
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            animation: pulse 2s infinite;
        }

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

        .hero h1 {
            font-size: clamp(36px, 5vw, 64px);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 24px;
            animation: fadeInUp 0.8s ease 0.2s both;
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, #60c5fa, #00e5a0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-sub {
            font-size: clamp(16px, 2vw, 22px);
            color: rgba(255,255,255,0.8);
            max-width: 700px;
            margin: 0 auto 48px;
            animation: fadeInUp 0.8s ease 0.4s both;
        }

        .hero-cta {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            animation: fadeInUp 0.8s ease 0.6s both;
        }

        .btn-primary, .btn-secondary {
            padding: 16px 36px;
            border-radius: 12px;
            font-size: 17px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            text-decoration: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            box-shadow: 0 4px 20px rgba(26,115,232,0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(26,115,232,0.5);
        }

        .btn-secondary {
            background: rgba(255,255,255,0.1);
            color: #fff;
            border: 1px solid rgba(255,255,255,0.3);
            backdrop-filter: blur(4px);
        }

        .btn-secondary:hover {
            background: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            gap: 48px;
            justify-content: center;
            margin-top: 64px;
            animation: fadeInUp 0.8s ease 0.8s both;
            flex-wrap: wrap;
        }

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

        .hero-stat .num {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
        }

        .hero-stat .label {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            margin-top: 4px;
        }

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

        /* ==================== SECTIONS COMMON ==================== */
        .section {
            padding: 100px 24px;
        }

        .section-alt {
            background: var(--bg-section);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
        }

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

        .section-tag {
            display: inline-block;
            background: linear-gradient(135deg, rgba(26,115,232,0.1), rgba(0,196,161,0.1));
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(28px, 3.5vw, 42px);
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.3;
        }

        .section-desc {
            font-size: 17px;
            color: var(--text-mid);
            max-width: 700px;
            margin: 16px auto 0;
        }

        /* ==================== FEATURE GRID ==================== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 36px 32px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(0,0,0,0.04);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0,0,0,0.12);
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin-bottom: 20px;
        }

        .icon-blue { background: linear-gradient(135deg, #e8f0fe, #d2e3fc); }
        .icon-green { background: linear-gradient(135deg, #e6f7f1, #c6f0e0); }
        .icon-purple { background: linear-gradient(135deg, #f0e6ff, #e0d0ff); }
        .icon-orange { background: linear-gradient(135deg, #fff0e0, #ffe0c0); }
        .icon-red { background: linear-gradient(135deg, #ffe8e8, #ffd0d0); }
        .icon-teal { background: linear-gradient(135deg, #e0f5ff, #c0ebff); }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-mid);
            line-height: 1.8;
        }

        /* ==================== INTEGRATION ==================== */
        .integration-flow {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .flow-node {
            background: #fff;
            border-radius: 16px;
            padding: 20px 28px;
            text-align: center;
            box-shadow: var(--card-shadow);
            min-width: 160px;
            transition: transform 0.3s ease;
        }

        .flow-node:hover { transform: scale(1.05); }

        .flow-node .emoji { font-size: 32px; margin-bottom: 8px; }

        .flow-node .name {
            font-weight: 700;
            font-size: 15px;
            color: var(--text-dark);
        }

        .flow-node .desc {
            font-size: 12px;
            color: var(--text-mid);
            margin-top: 4px;
        }

        .flow-arrow {
            font-size: 24px;
            color: var(--primary);
            font-weight: bold;
        }

        /* ==================== PRICING ==================== */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
            max-width: 800px;
            margin: 0 auto;
        }

        .pricing-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 40px 32px;
            text-align: center;
            box-shadow: var(--card-shadow);
            border: 2px solid transparent;
            position: relative;
        }

        .pricing-card.featured {
            border-color: var(--primary);
            transform: scale(1.03);
        }

        .pricing-card.featured::after {
            content: '推荐';
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 20px;
            border-radius: 50px;
        }

        .pricing-name {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .pricing-price {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            margin: 16px 0;
        }

        .pricing-price small {
            font-size: 14px;
            font-weight: 400;
            color: var(--text-mid);
        }

        .pricing-list {
            list-style: none;
            text-align: left;
            margin-top: 24px;
        }

        .pricing-list li {
            padding: 10px 0;
            border-bottom: 1px solid #f0f0f0;
            font-size: 14px;
            color: var(--text-mid);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .pricing-list li::before {
            content: '\2713';
            color: var(--accent);
            font-weight: bold;
            font-size: 16px;
        }

        /* ==================== SECURITY ==================== */
        .security-banner {
            background: linear-gradient(135deg, #1a2332, #0f1b2d);
            border-radius: var(--radius);
            padding: 60px 48px;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .security-banner::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(26,115,232,0.2) 0%, transparent 70%);
            top: -100px;
            right: -50px;
            border-radius: 50%;
        }

        .security-banner h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
            position: relative;
        }

        .security-banner p {
            font-size: 17px;
            color: rgba(255,255,255,0.7);
            max-width: 700px;
            margin: 0 auto 40px;
            position: relative;
        }

        .security-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            position: relative;
        }

        .security-item {
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 12px;
            padding: 24px 20px;
            text-align: center;
        }

        .security-item .s-icon { font-size: 30px; margin-bottom: 12px; }

        .security-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .security-item p {
            font-size: 13px;
            color: rgba(255,255,255,0.5);
            margin: 0;
        }

        /* ==================== NEWS ==================== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 24px;
        }

        .news-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(0,0,0,0.04);
            transition: all 0.3s ease;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0,0,0,0.12);
        }

        .news-img {
            height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 48px;
        }

        .news-img-1 { background: linear-gradient(135deg, #667eea, #764ba2); }
        .news-img-2 { background: linear-gradient(135deg, #f093fb, #f5576c); }
        .news-img-3 { background: linear-gradient(135deg, #4facfe, #00f2fe); }
        .news-img-4 { background: linear-gradient(135deg, #43e97b, #38f9d7); }
        .news-img-5 { background: linear-gradient(135deg, #fa709a, #fee140); }
        .news-img-6 { background: linear-gradient(135deg, #a18cd1, #fbc2eb); }

        .news-body {
            padding: 24px;
        }

        .news-meta {
            display: flex;
            gap: 12px;
            font-size: 12px;
            color: var(--text-mid);
            margin-bottom: 10px;
        }

        .news-tag {
            background: linear-gradient(135deg, rgba(26,115,232,0.1), rgba(0,196,161,0.1));
            color: var(--primary);
            padding: 2px 10px;
            border-radius: 4px;
            font-weight: 600;
        }

        .news-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
            line-height: 1.4;
        }

        .news-body p {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.7;
        }

        /* ==================== CASES ==================== */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 24px;
        }

        .case-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 36px 32px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(0,0,0,0.04);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0,0,0,0.12);
        }

        .case-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .case-industry {
            display: inline-block;
            background: linear-gradient(135deg, rgba(26,115,232,0.1), rgba(0,196,161,0.1));
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 6px;
            margin-bottom: 16px;
        }

        .case-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .case-card p {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.8;
        }

        .case-quote {
            margin-top: 20px;
            padding: 16px 20px;
            background: var(--bg-section);
            border-radius: 12px;
            border-left: 4px solid var(--primary);
            font-style: italic;
            font-size: 14px;
            color: var(--text-mid);
        }

        .case-quote .author {
            font-style: normal;
            font-weight: 600;
            color: var(--text-dark);
            margin-top: 8px;
            font-size: 13px;
        }

        /* ==================== ABOUT ==================== */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-dark);
        }

        .about-text p {
            font-size: 15px;
            color: var(--text-mid);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .about-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 32px;
        }

        .about-stat {
            text-align: center;
            padding: 20px;
            background: var(--bg-section);
            border-radius: 12px;
        }

        .about-stat .num {
            font-size: 32px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .about-stat .label {
            font-size: 13px;
            color: var(--text-mid);
            margin-top: 4px;
        }

        .about-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .about-milestones {
            display: grid;
            gap: 16px;
        }

        .milestone {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px 20px;
            background: #fff;
            border-radius: 12px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(0,0,0,0.04);
        }

        .milestone .year {
            font-size: 16px;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            min-width: 50px;
        }

        .milestone .desc {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.6;
        }

        /* ==================== CONTACT ==================== */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .contact-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 20px;
            background: #fff;
            border-radius: 12px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(0,0,0,0.04);
        }

        .contact-item .c-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
        }

        .contact-item .c-text h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-dark);
        }

        .contact-item .c-text p {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.6;
        }

        .contact-form {
            background: #fff;
            border-radius: var(--radius);
            padding: 40px 36px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(0,0,0,0.04);
        }

        .contact-form h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

        .contact-form .form-desc {
            font-size: 14px;
            color: var(--text-mid);
            margin-bottom: 28px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-bottom: 16px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e8ecf1;
            border-radius: 10px;
            font-size: 14px;
            color: var(--text-dark);
            background: #fafbfd;
            transition: all 0.3s ease;
            font-family: inherit;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(26,115,232,0.1);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }

        .submit-btn {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border: none;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(26,115,232,0.4);
        }

        /* ==================== FOOTER ==================== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.6);
            padding: 64px 24px 32px;
        }

        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand .logo-row {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .logo-row .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .footer-brand .logo-row span {
            font-size: 17px;
            font-weight: 800;
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255,255,255,0.45);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: rgba(255,255,255,0.45);
            font-size: 14px;
            transition: color 0.3s;
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
        }

        .footer-bottom a {
            color: rgba(255,255,255,0.35);
            font-size: 13px;
            transition: color 0.3s;
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* ==================== BACK TO TOP ==================== */
        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(26,115,232,0.4);
            opacity: 0;
            pointer-events: none;
            transition: all 0.3s ease;
            z-index: 100;
        }

        .back-to-top.visible {
            opacity: 1;
            pointer-events: all;
        }

        .back-to-top:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(26,115,232,0.5);
        }

        /* ==================== RESPONSIVE ==================== */
        @media (max-width: 1024px) {
            .nav-links { display: none; }
            .hamburger { display: flex; }
            .mobile-menu { display: flex; }
            .about-grid { grid-template-columns: 1fr; }
            .contact-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            /* Hide floating widget on tablet and below */
            .float-widget { display: none; }
        }

        @media (max-width: 768px) {
            :root { --nav-height: 60px; }

            .nav-container { padding: 0 16px; }

            .nav-logo .logo-sub { display: none; }

            .hero-stats { gap: 24px; }
            .hero-stat .num { font-size: 28px; }
            .section { padding: 64px 16px; }
            .feature-grid { grid-template-columns: 1fr; }
            .integration-flow { flex-direction: column; }
            .flow-arrow { transform: rotate(90deg); }
            .security-banner { padding: 40px 24px; }
            .pricing-card.featured { transform: none; }
            .news-grid { grid-template-columns: 1fr; }
            .case-grid { grid-template-columns: 1fr; }
            .form-row { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .about-stats { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 480px) {
            .hero h1 { font-size: 30px; }
            .hero-cta { flex-direction: column; align-items: center; }
            .btn-primary, .btn-secondary { width: 100%; max-width: 280px; }
            .hero-stats { gap: 16px; }
            .hero-stat .num { font-size: 24px; }
            .hero-stat .label { font-size: 12px; }
            .section-title { font-size: 24px; }
            .contact-form { padding: 28px 20px; }
            .security-banner { padding: 32px 16px; }
        }

        /* ==================== SCROLL REVEAL ==================== */
        .reveal {
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
        }

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