/* ==================== Variables ==================== */
        :root {
            --primary: #0066ff;
            --primary-light: #3d8bff;
            --primary-dark: #0044cc;
            --accent: #00d4ff;
            --accent-2: #00e88f;
            --bg-dark: #0a1628;
            --bg-darker: #060f1f;
            --bg-card: #0f1e36;
            --bg-card-hover: #152844;
            --text: #e8f0ff;
            --text-muted: #8aa0bd;
            --border: rgba(0,102,255,0.12);
            --border-hover: rgba(0,102,255,0.3);
            --gradient: linear-gradient(135deg, #0066ff 0%, #00d4ff 100%);
            --gradient-green: linear-gradient(135deg, #00e88f 0%, #00d4ff 100%);
            --shadow: 0 20px 60px rgba(0,0,0,0.4);
            --shadow-glow: 0 0 40px rgba(0,102,255,0.12);
            --radius: 14px;
            --max-width: 1280px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html { scroll-behavior: smooth; scroll-padding-top: 80px; }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            background: var(--bg-dark);
            color: var(--text);
            line-height: 1.65;
            overflow-x: hidden;
        }

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

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ==================== Typography ==================== */
        h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; }

        .section-title {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            text-align: center;
            margin-bottom: 12px;
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 640px;
            margin: 0 auto 56px;
        }

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

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0,102,255,0.1);
            border: 1px solid rgba(0,102,255,0.2);
            border-radius: 100px;
            font-size: 0.8rem;
            color: var(--primary-light);
            margin-bottom: 16px;
            font-weight: 500;
        }

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

        /* ==================== Buttons ==================== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 100px;
            font-size: 0.92rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            font-family: inherit;
        }

        .btn-primary {
            background: var(--gradient);
            color: #fff;
            box-shadow: 0 4px 20px rgba(0,102,255,0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0,102,255,0.45);
        }

        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 1px solid var(--border);
        }

        .btn-outline:hover {
            background: rgba(0,102,255,0.08);
            border-color: var(--primary);
        }

        /* ==================== Navbar ==================== */
        .navbar {
            position: fixed;
            top: 0; left: 0; right: 0;
            z-index: 1000;
            padding: 16px 0;
            transition: var(--transition);
        }

        .navbar.scrolled {
            background: rgba(10,22,40,0.9);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            padding: 10px 0;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 2rem;
            font-weight: 800;
            
            letter-spacing: 0.03em;
        }

        .logo-icon {
            height: 96px;
            max-width: 320px;
            object-fit: contain;
            border-radius: 6px;
            filter: drop-shadow(0 2px 8px rgba(255, 208, 128, 0.3));
        }

        .logo-text { display: flex; flex-direction: column; line-height: 1.1;  }
        .logo-text .sub { font-size: 0.75rem; color: var(--text-muted); font-weight: 500; letter-spacing: 0.05em; }

        .nav-links { display: flex; gap: 28px; }

        .nav-links a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
            font-weight: 500;
        }

        .nav-links a:hover { color: var(--text); }

        .nav-cta { display: flex; align-items: center; gap: 14px; }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
        }

        .nav-toggle span {
            width: 24px; height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ==================== Hero ==================== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            overflow: hidden;
        }

        .hero-bg { position: absolute; inset: 0; z-index: 0; }

        .hero-pcb {
            position: absolute;
            inset: 0;
            background:
                linear-gradient(90deg, rgba(10,22,40,0.82) 0%, rgba(10,22,40,0.5) 50%, rgba(10,22,40,0.3) 100%),
                url('images/hero_military.webp') center center / cover no-repeat;
            animation: pcbZoom 20s ease-in-out infinite;
            will-change: transform;
            transform: translateZ(0);
        }

        @keyframes pcbZoom {
            0%, 100% { transform: scale(1) translate(0, 0); }
            50% { transform: scale(1.06) translate(-1%, -0.5%); }
        }

        @media (max-width: 768px) {
            .hero-pcb {
                background-image:
                    linear-gradient(90deg, rgba(10,22,40,0.82) 0%, rgba(10,22,40,0.5) 50%, rgba(10,22,40,0.3) 100%),
                    url('images/hero_military_900.webp');
                animation: none;
                will-change: auto;
            }
        }

        .hero-bg::before {
            content: '';
            position: absolute;
            width: 700px; height: 700px;
            background: radial-gradient(circle, rgba(0, 180, 255, 0.25) 0%, transparent 65%);
            top: -250px; left: -150px;
            border-radius: 50%;
            animation: float1 8s ease-in-out infinite;
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            width: 600px; height: 600px;
            background: radial-gradient(circle, rgba(0, 255, 200, 0.18) 0%, transparent 65%);
            bottom: -200px; right: -100px;
            border-radius: 50%;
            animation: float2 10s ease-in-out infinite;
        }

        @keyframes float1 { 0%,100% { transform: translate(0,0) scale(1); opacity: 0.6; } 50% { transform: translate(80px, 50px) scale(1.15); opacity: 1; } }
        @keyframes float2 { 0%,100% { transform: translate(0,0) scale(1); opacity: 0.5; } 50% { transform: translate(-60px, -80px) scale(1.2); opacity: 0.9; } }

        .hero-grid {
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(0, 200, 255, 0.1) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 200, 255, 0.1) 1px, transparent 1px);
            background-size: 60px 60px;
            mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
            -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
            animation: none;
        }

        @keyframes gridMove {
            0% { background-position: 0 0, 0 0; }
            100% { background-position: 60px 60px, 60px 60px; }
        }

        /* 电路线路流动效果 - 更明显 */
        .hero-circuit-lines {
            position: absolute;
            inset: 0;
            overflow: hidden;
            pointer-events: none;
        }

        .circuit-line {
            position: absolute;
            background: linear-gradient(90deg, transparent, #00ffff, transparent);
            box-shadow: 0 0 10px #00ffff, 0 0 20px #00ffff, 0 0 30px rgba(0, 255, 255, 0.5);
            border-radius: 2px;
            opacity: 0;
        }

        .circuit-line.horizontal {
            width: 120px;
            height: 3px;
            animation: flowH 2.5s ease-in-out infinite;
        }

        .circuit-line.vertical {
            width: 3px;
            height: 120px;
            background: linear-gradient(180deg, transparent, #00ffff, transparent);
            animation: flowV 2.5s ease-in-out infinite;
        }

        @keyframes flowH {
            0% { opacity: 0; transform: translateX(-60px) scaleX(0.5); }
            15% { opacity: 1; }
            50% { opacity: 0.9; transform: translateX(0) scaleX(1); }
            85% { opacity: 1; }
            100% { opacity: 0; transform: translateX(60px) scaleX(0.5); }
        }

        @keyframes flowV {
            0% { opacity: 0; transform: translateY(-60px) scaleY(0.5); }
            15% { opacity: 1; }
            50% { opacity: 0.9; transform: translateY(0) scaleY(1); }
            85% { opacity: 1; }
            100% { opacity: 0; transform: translateY(60px) scaleY(0.5); }
        }

        /* 浮动光点 - 更多更亮 */
        .hero-particles {
            position: absolute;
            inset: 0;
            overflow: hidden;
            pointer-events: none;
        }

        .particle {
            position: absolute;
            width: 6px;
            height: 6px;
            background: #00ffcc;
            border-radius: 50%;
            box-shadow: 0 0 10px #00ffcc, 0 0 20px #00ffcc, 0 0 30px rgba(0, 255, 200, 0.6);
            animation: particleFloat 6s ease-in-out infinite;
        }

        @keyframes particleFloat {
            0% {
                opacity: 0;
                transform: translateY(20px) scale(0.3);
            }
            15% {
                opacity: 1;
            }
            50% {
                opacity: 0.9;
                transform: translateY(-30px) scale(1);
            }
            85% {
                opacity: 0.8;
            }
            100% {
                opacity: 0;
                transform: translateY(-80px) scale(0.5);
            }
        }

        /* PCB光晕脉冲 */
        .hero-pcb-glow {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(0, 200, 255, 0.15) 0%, transparent 50%),
                        radial-gradient(ellipse at 70% 60%, rgba(0, 255, 200, 0.1) 0%, transparent 50%);
            animation: glowPulse 4s ease-in-out infinite;
            pointer-events: none;
        }

        @keyframes glowPulse {
            0%, 100% { opacity: 0.5; }
            50% { opacity: 1; }
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 760px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 18px;
            background: rgba(0,102,255,0.1);
            border: 1px solid rgba(0,102,255,0.25);
            border-radius: 100px;
            font-size: 0.82rem;
            color: var(--primary-light);
            margin-bottom: 24px;
            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; transform:scale(1); } 50% { opacity:0.5; transform:scale(1.3); } }

        .hero h1 {
            font-size: clamp(2rem, 5vw, 3.6rem);
            margin-bottom: 20px;
            animation: fadeInUp 0.8s ease 0.1s both;
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 580px;
            margin-bottom: 32px;
            animation: fadeInUp 0.8s ease 0.2s both;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            animation: fadeInUp 0.8s ease 0.3s both;
        }

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

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 56px;
            animation: fadeInUp 0.8s ease 0.4s both;
        }

        .hero-stat .num {
            font-size: 1.8rem;
            font-weight: 800;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-stat .label { font-size: 0.82rem; color: var(--text-muted); }

        /* ==================== Marquee Brands ==================== */
        .brand-marquee {
            padding: 40px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .marquee-label {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.82rem;
            margin-bottom: 28px;
            letter-spacing: 0.08em;
        }

        .marquee-track {
            display: flex;
            gap: 56px;
            animation: scroll 30s linear infinite;
            width: max-content;
        }

        @keyframes scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

        .marquee-item {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-muted);
            opacity: 0.55;
            transition: var(--transition);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .marquee-item:hover { opacity: 1; color: var(--text); }

        /* ==================== Section ==================== */
        section { padding: 90px 0; }

        /* ==================== About ==================== */
        .about-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 56px;
            align-items: center;
        }

        .about-text .section-tag { margin-bottom: 14px; }

        .about-text h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            margin-bottom: 18px;
        }

        .about-text p { color: var(--text-muted); margin-bottom: 20px; }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
            margin-top: 28px;
        }

        .about-feature {
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }

        .about-feature .check {
            width: 26px; height: 26px;
            background: rgba(0,102,255,0.15);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--primary-light);
            font-size: 0.8rem;
        }

        .about-feature span:last-child { font-size: 0.9rem; }

        .about-visual { position: relative; }

        .about-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
        }

        .about-card.main { position: relative; z-index: 2; }

        .about-card.floating {
            position: relative;
            margin-top: -20px;
            margin-left: auto;
            z-index: 3;
            max-width: 260px;
            animation: floatCard 5s ease-in-out infinite;
        }

        @keyframes floatCard { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

        .about-card .icon-box {
            width: 48px; height: 48px;
            background: var(--gradient);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 14px;
        }

        .about-card h3 { font-size: 1.1rem; margin-bottom: 6px; }
        .about-card p { font-size: 0.88rem; color: var(--text-muted); }

        .about-card .metric {
            font-size: 2rem;
            font-weight: 800;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ==================== Brands Section ==================== */
        .brand-tabs {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }

        .brand-tab {
            padding: 10px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 100px;
            font-size: 0.9rem;
            color: var(--text-muted);
            cursor: pointer;
            transition: var(--transition);
            font-weight: 500;
        }

        .brand-tab:hover { color: var(--text); border-color: var(--border-hover); }

        .brand-tab.active {
            background: var(--gradient);
            color: #fff;
            border-color: transparent;
        }

        .brand-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .brand-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .brand-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
            box-shadow: var(--shadow-glow);
        }

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

        .brand-header {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 18px;
        }

        .brand-logo {
            width: 56px; height: 56px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            background: #fff;
            padding: 7px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }

        .brand-logo img {
            max-width: 100%;
            max-height: 100%;
            width: auto;
            height: auto;
            object-fit: contain;
            display: block;
        }

        .brand-logo .logo-fallback {
            display: none;
            font-size: 1rem;
            font-weight: 800;
            color: #fff;
        }

        .brand-logo.fallback {
            background: var(--gradient);
        }

        .brand-logo.fallback .logo-fallback {
            display: flex;
        }

        .brand-logo.fallback img {
            display: none;
        }

        /* Marquee logo images */
        .marquee-item img {
            height: 24px;
            width: auto;
            object-fit: contain;
            opacity: 0.6;
            transition: var(--transition);
        }

        .marquee-item:hover img {
            opacity: 1;
        }

        .brand-card h3 { font-size: 1.05rem; }
        .brand-card .brand-region { font-size: 0.78rem; color: var(--text-muted); }

        .brand-card .brand-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 14px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border);
        }

        .brand-products {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .brand-product {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .brand-product .bullet {
            color: var(--primary-light);
            flex-shrink: 0;
            margin-top: 1px;
        }

        .brand-product strong { color: var(--text); font-weight: 600; }

        .brand-card .market-tag {
            display: inline-block;
            margin-top: 14px;
            padding: 4px 12px;
            background: rgba(0,212,255,0.08);
            border: 1px solid rgba(0,212,255,0.15);
            border-radius: 100px;
            font-size: 0.75rem;
            color: var(--accent);
        }

        .brand-panel { display: none; }
        .brand-panel.active { display: contents; }

        /* ==================== Application Areas ==================== */
        .app-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .app-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px;
            transition: var(--transition);
            text-align: center;
        }

        .app-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
        }

        .app-icon {
            width: 64px; height: 64px;
            margin: 0 auto 20px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            background: rgba(0,102,255,0.1);
        }

        .app-card:nth-child(1) .app-icon { background: rgba(0,102,255,0.12); }
        .app-card:nth-child(2) .app-icon { background: rgba(0,232,143,0.1); }
        .app-card:nth-child(3) .app-icon { background: rgba(0,212,255,0.1); }
        .app-card:nth-child(4) .app-icon { background: rgba(236,72,153,0.1); }
        .app-card:nth-child(5) .app-icon { background: rgba(245,158,11,0.1); }
        .app-card:nth-child(6) .app-icon { background: rgba(139,92,246,0.1); }

        .military-card {
            border-color: rgba(0,162,255,0.32) !important;
        }

        .military-card .app-icon {
            background: rgba(0,102,255,0.16) !important;
        }

        .app-icon .icon-svg {
            width: 36px; height: 36px;
            display: block;
        }

        .app-card h3 { font-size: 1.1rem; margin-bottom: 12px; }

        .app-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            justify-content: center;
        }

        .app-tag {
            font-size: 0.75rem;
            padding: 3px 10px;
            background: rgba(255,255,255,0.04);
            border-radius: 100px;
            color: var(--text-muted);
        }

        /* ==================== Clients ==================== */
        .clients {
            background: linear-gradient(180deg, transparent, rgba(0,102,255,0.03), transparent);
        }

        .client-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .client-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
        }

        .client-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-3px);
            background: var(--bg-card-hover);
        }

        .client-name {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .client-en {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* ==================== CTA ==================== */
        .cta-banner {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 30% 50%, rgba(0,102,255,0.12), transparent 60%),
                        radial-gradient(circle at 70% 50%, rgba(0,212,255,0.08), transparent 60%);
        }

        .cta-banner > * { position: relative; z-index: 1; }

        .cta-banner h2 { font-size: clamp(1.4rem, 3vw, 2rem); margin-bottom: 14px; }
        .cta-banner p { color: var(--text-muted); max-width: 480px; margin: 0 auto 28px; }

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

        .contact-info h2 { font-size: clamp(1.4rem, 3vw, 2rem); margin-bottom: 14px; }
        .contact-info > p { color: var(--text-muted); margin-bottom: 36px; }

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

        .contact-item { display: flex; gap: 14px; align-items: flex-start; }

        .contact-item .icon {
            width: 46px; height: 46px;
            background: rgba(0,102,255,0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .contact-item .label { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 2px; }
        .contact-item .value { font-size: 0.92rem; font-weight: 500; }

        .contact-form {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px;
        }

        .form-group { margin-bottom: 18px; }

        .form-group label {
            display: block;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 6px;
            font-weight: 500;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 14px;
            background: var(--bg-darker);
            border: 1px solid var(--border);
            border-radius: 10px;
            color: var(--text);
            font-size: 0.9rem;
            font-family: inherit;
            transition: var(--transition);
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0,102,255,0.1);
        }

        .form-group textarea { resize: vertical; min-height: 110px; }

        .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

        .form-message {
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 0.88rem;
            margin-bottom: 18px;
            display: none;
        }

        .form-message.success {
            background: rgba(0,232,143,0.1);
            border: 1px solid rgba(0,232,143,0.3);
            color: var(--accent-2);
            display: block;
        }

        .form-message.error {
            background: rgba(239,68,68,0.1);
            border: 1px solid rgba(239,68,68,0.3);
            color: #f87171;
            display: block;
        }

        /* ==================== Certificates ==================== */
        #certs { padding: 80px 0; }
        .certs-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .cert-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }
        .cert-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .cert-img-wrap {
            background: #fff;
            padding: 20px;
            height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .cert-img-wrap img {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
            transition: transform 0.4s;
        }
        .cert-card:hover .cert-img-wrap img {
            transform: scale(1.05);
        }
        .cert-info {
            padding: 20px 24px;
            text-align: center;
        }
        .cert-info h3 {
            font-size: 1.3rem;
            margin-bottom: 8px;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .cert-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .certs-grid { grid-template-columns: 1fr; }
            .cert-img-wrap { height: 280px; }
        }

        /* ==================== Footer ==================== */
        .footer {
            border-top: 1px solid var(--border);
            padding: 56px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.88rem;
            margin: 16px 0;
            max-width: 300px;
        }

        .footer-col h4 { font-size: 0.92rem; margin-bottom: 16px; }

        .footer-col ul { display: flex; flex-direction: column; gap: 10px; }

        .footer-col a {
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 28px;
            border-top: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.82rem;
        }

        .footer-bottom-links { display: flex; gap: 20px; }

        /* ==================== Reveal ==================== */
        .reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .reveal.visible { opacity: 1; transform: translateY(0); }
        .reveal-delay-1 { transition-delay: 0.1s; }
        .reveal-delay-2 { transition-delay: 0.2s; }
        .reveal-delay-3 { transition-delay: 0.3s; }

        /* ==================== Back to Top ==================== */
        .back-top {
            position: fixed;
            bottom: 28px; right: 28px;
            width: 46px; height: 46px;
            background: var(--gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 999;
            box-shadow: 0 4px 20px rgba(0,102,255,0.3);
            font-size: 1.1rem;
            color: #fff;
            border: none;
        }

        .back-top.visible { opacity: 1; visibility: visible; }
        .back-top:hover { transform: translateY(-4px); }

        /* ==================== Responsive ==================== */
        @media (max-width: 1024px) {
            .brand-grid, .app-grid { grid-template-columns: repeat(2, 1fr); }
            .client-grid { grid-template-columns: repeat(3, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 66px; left: 0; right: 0;
                background: rgba(10,22,40,0.96);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px;
                gap: 16px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-150%);
                transition: transform 0.3s ease;
            }
            .nav-links.active { transform: translateY(0); }
            .nav-toggle { display: flex; }
            .nav-cta .btn { display: none; }
            .hero-stats { flex-wrap: wrap; gap: 20px; }
            .about-features { grid-template-columns: 1fr; }
            .form-row { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; gap: 14px; text-align: center; }
            .cta-banner { padding: 36px 20px; }
        }

        @media (max-width: 480px) {
            .brand-grid, .app-grid, .client-grid { grid-template-columns: 1fr; }
        }

        /* ==================== Language Switcher ==================== */
        .lang-switch {
            position: relative;
            display: flex;
            align-items: center;
        }

        .lang-btn {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            background: rgba(0,102,255,0.08);
            border: 1px solid var(--border);
            border-radius: 8px;
            color: var(--text);
            font-size: 0.82rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .lang-btn:hover {
            background: rgba(0,102,255,0.15);
            border-color: var(--primary);
        }

        .lang-btn .lang-arrow {
            font-size: 0.65rem;
            transition: transform 0.2s ease;
        }

        .lang-btn.open .lang-arrow { transform: rotate(180deg); }

        .lang-dropdown {
            position: absolute;
            top: calc(100% + 6px);
            right: 0;
            min-width: 120px;
            background: rgba(15,30,54,0.98);
            backdrop-filter: blur(20px);
            border: 1px solid var(--border-hover);
            border-radius: 10px;
            box-shadow: 0 12px 40px rgba(0,0,0,0.5);
            overflow: hidden;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: var(--transition);
            z-index: 1100;
        }

        .lang-dropdown.open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .lang-option {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 16px;
            cursor: pointer;
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
            border-bottom: 1px solid rgba(0,102,255,0.06);
        }

        .lang-option:last-child { border-bottom: none; }

        .lang-option:hover {
            background: rgba(0,102,255,0.1);
            color: var(--text);
        }

        .lang-option.active {
            color: var(--accent);
            background: rgba(0,212,255,0.06);
        }

        .lang-option .lang-flag { font-size: 1.1rem; }

        .lang-option .lang-code {
            margin-left: auto;
            font-size: 0.7rem;
            color: var(--text-muted);
            opacity: 0.6;
        }

        @media (max-width: 768px) {
            .lang-btn { padding: 5px 8px; font-size: 0.75rem; }
            .lang-btn .lang-label { display: none; }
        }

        /* ==================== Product Catalog ==================== */
        #products {
            background: linear-gradient(180deg, #0c1e35 0%, #0f2942 50%, #0a1628 100%);
            padding: 100px 0;
        }

        .product-toolbar {
            display: flex;
            gap: 16px;
            margin-bottom: 24px;
            flex-wrap: wrap;
            align-items: center;
        }

        .search-box {
            position: relative;
            flex: 1;
            min-width: 240px;
        }

        .search-box .search-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            pointer-events: none;
        }

        .search-box input {
            width: 100%;
            padding: 12px 16px 12px 44px;
            background: rgba(56,139,197,0.1);
            border: 1px solid rgba(56,139,197,0.25);
            border-radius: 8px;
            color: var(--text-primary);
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }

        .search-box input:focus {
            outline: none;
            border-color: rgba(56,189,248,0.5);
            box-shadow: 0 0 0 3px rgba(56,189,248,0.1);
        }

        .filter-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .filter-select {
            padding: 12px 16px;
            background: rgba(56,139,197,0.1);
            border: 1px solid rgba(56,139,197,0.25);
            border-radius: 10px;
            color: var(--text-light);
            font-size: 0.85rem;
            cursor: pointer;
            transition: all 0.3s ease;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2388a4b8' viewBox='0 0 16 16'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
        }

        .filter-select:focus {
            outline: none;
            border-color: rgba(56,189,248,0.5);
        }

        .filter-select option {
            background: #0c1e35;
            color: var(--text-light);
        }

        .product-stats {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            padding-left: 4px;
        }

        .product-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 16px;
        }

        .prod-card {
            background: rgba(56,139,197,0.08);
            border: 1px solid rgba(56,139,197,0.2);
            border-radius: 12px;
            padding: 20px;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .prod-card:hover {
            border-color: rgba(56,189,248,0.5);
            background: rgba(56,189,248,0.12);
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(14,165,233,0.2);
        }

        .prod-pkg-wrap {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100px;
            background: rgba(255,255,255,0.02);
            border-radius: 8px;
            padding: 8px;
        }

        .prod-pkg-wrap svg {
            max-width: 80px;
            max-height: 80px;
        }

        .prod-brand {
            font-size: 0.72rem;
            color: var(--accent-cyan);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .prod-model {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-light);
            font-family: 'Courier New', monospace;
        }

        .prod-meta {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .prod-tag {
            font-size: 0.7rem;
            padding: 3px 8px;
            border-radius: 4px;
            background: rgba(99,102,241,0.15);
            color: var(--accent-indigo);
            border: 1px solid rgba(99,102,241,0.2);
        }

        .prod-tag.pkg {
            background: rgba(34,211,238,0.12);
            color: var(--accent-cyan);
            border-color: rgba(34,211,238,0.2);
        }

        .prod-desc {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.4;
        }

        .prod-ds-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 14px;
            background: linear-gradient(135deg, var(--accent-indigo), var(--accent-cyan));
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 6px;
            text-decoration: none;
            transition: all 0.3s ease;
            margin-top: auto;
            align-self: flex-start;
        }

        .prod-ds-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(99,102,241,0.4);
        }

        .product-pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .page-btn {
            min-width: 36px;
            height: 36px;
            padding: 0 10px;
            border: 1px solid rgba(255,255,255,0.1);
            background: rgba(255,255,255,0.03);
            color: var(--text-light);
            border-radius: 8px;
            font-size: 0.85rem;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .page-btn:hover:not(:disabled) {
            border-color: var(--accent-cyan);
            background: rgba(34,211,238,0.08);
        }

        .page-btn.active {
            background: var(--accent-indigo);
            border-color: var(--accent-indigo);
            color: #fff;
        }

        .page-btn:disabled {
            opacity: 0.3;
            cursor: not-allowed;
        }

        .page-info {
            color: var(--text-muted);
            font-size: 0.82rem;
            margin: 0 8px;
        }

        @media (max-width: 768px) {
            .product-toolbar { flex-direction: column; }
            .search-box { width: 100%; }
            .filter-group { width: 100%; }
            .filter-select { flex: 1; }
            .product-grid { grid-template-columns: 1fr; }
        }
.hero-bg-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.28;
    z-index: -1;
    filter: brightness(0.55);
}