/* roulang page: index */
:root {
            --bg-deep: #0A0E17;
            --bg-mid: #0D1320;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-card-hover: rgba(255, 255, 255, 0.07);
            --border-card: rgba(255, 255, 255, 0.08);
            --border-card-hover: rgba(0, 198, 255, 0.3);
            --text-primary: #E8ECF1;
            --text-secondary: #8899AA;
            --text-tertiary: #556677;
            --accent-blue: #00C6FF;
            --accent-cyan: #00F0FF;
            --accent-purple: #7B2FFF;
            --accent-magenta: #D400FF;
            --accent-green: #00FF88;
            --accent-red: #FF4470;
            --glow-blue: rgba(0, 198, 255, 0.5);
            --glow-cyan: rgba(0, 240, 255, 0.4);
            --glow-purple: rgba(123, 47, 255, 0.35);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 12px 40px rgba(0, 198, 255, 0.15), 0 8px 32px rgba(0, 0, 0, 0.5);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-btn: 30px;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --font-mono: "SF Mono", "Roboto Mono", "DIN Alternate", "Courier New", monospace;
            --nav-height: 64px;
            --nav-height-mobile: 56px;
            --max-width: 1200px;
            --transition-fast: 0.25s ease;
            --transition-smooth: 0.3s ease-out;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background: var(--bg-deep);
            background: linear-gradient(175deg, #0A0E17 0%, #0F1620 40%, #0D1320 70%, #0A0E17 100%);
            background-attachment: fixed;
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(ellipse at 25% 15%, rgba(0, 198, 255, 0.03) 0%, transparent 60%),
                radial-gradient(ellipse at 72% 40%, rgba(123, 47, 255, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 40% 75%, rgba(0, 240, 255, 0.02) 0%, transparent 50%);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--accent-blue);
            text-decoration: none;
            transition: color var(--transition-fast), text-shadow var(--transition-fast);
        }
        a:hover {
            color: var(--accent-cyan);
            text-shadow: 0 0 12px rgba(0, 198, 255, 0.4);
        }

        button {
            cursor: pointer;
            font-family: var(--font-cn);
            border: none;
            outline: none;
            transition: all var(--transition-fast);
        }
        button:focus-visible {
            outline: 2px solid var(--accent-blue);
            outline-offset: 3px;
        }

        input,
        select,
        textarea {
            font-family: var(--font-cn);
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            border-color: var(--accent-blue);
            box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            html {
                scroll-padding-top: var(--nav-height-mobile);
            }
        }

        /* ============ NAVIGATION ============ */
        header.site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(10, 14, 23, 0.75);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid transparent;
            transition: background var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
        }
        header.site-nav.scrolled {
            background: rgba(10, 14, 23, 0.95);
            border-bottom: 1px solid rgba(0, 198, 255, 0.3);
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.5);
        }
        header.site-nav .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            white-space: nowrap;
            position: relative;
            z-index: 1001;
            transition: text-shadow var(--transition-fast);
        }
        .nav-logo:hover {
            text-shadow: 0 0 20px rgba(0, 198, 255, 0.6), 0 0 40px rgba(0, 198, 255, 0.3);
            color: #fff;
        }
        .nav-logo .logo-icon {
            width: 34px;
            height: 34px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        .nav-logo .logo-diamond {
            width: 22px;
            height: 22px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            transform: rotate(45deg);
            border-radius: 3px;
            box-shadow: 0 0 16px rgba(0, 198, 255, 0.5);
            position: relative;
        }
        .nav-logo .logo-diamond::after {
            content: '';
            position: absolute;
            inset: 3px;
            background: var(--bg-deep);
            transform: rotate(0deg);
            border-radius: 1px;
        }
        .nav-logo .logo-bolt {
            position: absolute;
            width: 8px;
            height: 14px;
            background: var(--accent-cyan);
            clip-path: polygon(50% 0%, 80% 35%, 60% 45%, 100% 65%, 20% 100%, 45% 65%, 0% 55%, 50% 25%);
            z-index: 2;
            box-shadow: 0 0 8px var(--accent-cyan);
        }
        .nav-logo .logo-text-accent {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-menu a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            letter-spacing: 0.01em;
            transition: color var(--transition-fast);
            position: relative;
            padding: 4px 0;
        }
        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-blue);
            border-radius: 1px;
            transition: width var(--transition-fast);
            box-shadow: 0 0 8px var(--accent-blue);
        }
        .nav-menu a:hover,
        .nav-menu a.active {
            color: #fff;
        }
        .nav-menu a:hover::after,
        .nav-menu a.active::after {
            width: 100%;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 9px 22px;
            border-radius: var(--radius-btn);
            font-size: 0.875rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, #0098CC, var(--accent-blue));
            color: #fff;
            box-shadow: 0 0 20px rgba(0, 198, 255, 0.45), 0 0 50px rgba(0, 198, 255, 0.15);
            white-space: nowrap;
            border: none;
            cursor: pointer;
            text-decoration: none;
            transition: all var(--transition-fast);
        }
        .nav-cta-btn:hover {
            filter: brightness(1.15);
            box-shadow: 0 0 30px rgba(0, 198, 255, 0.6), 0 0 70px rgba(0, 198, 255, 0.25);
            transform: translateY(-1px);
            color: #fff;
        }
        .nav-cta-btn:active {
            transform: scale(0.97);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
            padding: 8px;
            min-width: 44px;
            min-height: 44px;
            align-items: center;
            justify-content: center;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .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);
        }

        @media (max-width: 767px) {
            header.site-nav {
                height: var(--nav-height-mobile);
            }
            .nav-menu {
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100vh;
                background: rgba(10, 14, 23, 0.92);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 28px;
                transform: translateY(-100%);
                transition: transform 0.4s ease;
                z-index: 999;
            }
            .nav-menu.open {
                transform: translateY(0);
            }
            .nav-menu a {
                font-size: 1.25rem;
                letter-spacing: 0.03em;
                padding: 6px 0;
            }
            .nav-menu .nav-cta-btn {
                margin-top: 8px;
                font-size: 1rem;
                padding: 12px 28px;
            }
            .hamburger {
                display: flex;
            }
            .nav-menu .nav-cta-desktop {
                display: none;
            }
        }
        @media (min-width: 768px) {
            .nav-menu .nav-cta-mobile {
                display: none;
            }
        }

        /* ============ HERO SECTION ============ */
        #hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            padding-top: var(--nav-height);
            isolation: isolate;
        }
        #hero .hero-bg-grid {
            position: absolute;
            inset: 0;
            pointer-events: none;
            z-index: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 48px 48px;
            mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
            -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
        }
        #hero .hero-bg-image {
            position: absolute;
            inset: 0;
            pointer-events: none;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.13;
            mix-blend-mode: screen;
        }
        #hero .hero-particles {
            position: absolute;
            inset: 0;
            pointer-events: none;
            z-index: 0;
        }
        .particle {
            position: absolute;
            border-radius: 50%;
            pointer-events: none;
            animation: floatParticle 8s ease-in-out infinite;
        }
        .particle:nth-child(1) {
            width: 4px;
            height: 4px;
            background: var(--accent-blue);
            top: 18%;
            left: 12%;
            animation-delay: 0s;
            animation-duration: 9s;
        }
        .particle:nth-child(2) {
            width: 3px;
            height: 3px;
            background: var(--accent-cyan);
            top: 25%;
            left: 75%;
            animation-delay: 1.5s;
            animation-duration: 10s;
        }
        .particle:nth-child(3) {
            width: 5px;
            height: 5px;
            background: var(--accent-purple);
            top: 55%;
            left: 20%;
            animation-delay: 3s;
            animation-duration: 7.5s;
        }
        .particle:nth-child(4) {
            width: 3px;
            height: 3px;
            background: var(--accent-magenta);
            top: 70%;
            left: 80%;
            animation-delay: 4.5s;
            animation-duration: 8.5s;
        }
        .particle:nth-child(5) {
            width: 4px;
            height: 4px;
            background: var(--accent-blue);
            top: 35%;
            left: 55%;
            animation-delay: 2s;
            animation-duration: 9.5s;
        }
        .particle:nth-child(6) {
            width: 2px;
            height: 2px;
            background: var(--accent-cyan);
            top: 60%;
            left: 40%;
            animation-delay: 5s;
            animation-duration: 7s;
        }
        .particle:nth-child(7) {
            width: 4px;
            height: 4px;
            background: var(--accent-purple);
            top: 15%;
            left: 30%;
            animation-delay: 6s;
            animation-duration: 11s;
        }
        .particle:nth-child(8) {
            width: 3px;
            height: 3px;
            background: var(--accent-blue);
            top: 80%;
            left: 60%;
            animation-delay: 1s;
            animation-duration: 8s;
        }

        @keyframes floatParticle {
            0%,
            100% {
                transform: translateY(0) translateX(0) scale(1);
                opacity: 0.5;
            }
            25% {
                transform: translateY(-30px) translateX(15px) scale(1.4);
                opacity: 0.9;
            }
            50% {
                transform: translateY(-60px) translateX(-10px) scale(0.8);
                opacity: 0.35;
            }
            75% {
                transform: translateY(-20px) translateX(-20px) scale(1.2);
                opacity: 0.7;
            }
        }

        #hero .hero-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 40px 20px;
        }
        .hero-left {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .hero-left h1 {
            font-size: clamp(2rem, 4vw, 3.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.1;
            color: #fff;
            margin: 0;
        }
        .hero-left h1 .highlight {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-left .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 420px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            font-size: 1rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, #0098CC, var(--accent-blue));
            color: #fff;
            box-shadow: 0 0 20px rgba(0, 198, 255, 0.45), 0 0 50px rgba(0, 198, 255, 0.15);
            border: none;
            cursor: pointer;
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }
        .btn-primary:hover {
            filter: brightness(1.15);
            box-shadow: 0 0 30px rgba(0, 198, 255, 0.6), 0 0 70px rgba(0, 198, 255, 0.25);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            color: var(--text-primary);
            cursor: pointer;
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }
        .btn-secondary:hover {
            border-color: var(--accent-blue);
            color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 198, 255, 0.2);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: scale(0.97);
        }
        .hero-right {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-dashboard-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(16px) saturate(120%);
            -webkit-backdrop-filter: blur(16px) saturate(120%);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-xl);
            padding: 24px;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 198, 255, 0.08);
            animation: floatCard 6s ease-in-out infinite;
            width: 100%;
            max-width: 420px;
            position: relative;
            overflow: hidden;
        }
        .hero-dashboard-card::before {
            content: '';
            position: absolute;
            inset: -1px;
            border-radius: var(--radius-xl);
            padding: 1px;
            background: linear-gradient(135deg, rgba(0, 198, 255, 0.4), transparent 50%, rgba(123, 47, 255, 0.3));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
            z-index: 0;
        }
        .hero-dashboard-card img {
            border-radius: var(--radius-md);
            width: 100%;
            object-fit: cover;
            position: relative;
            z-index: 1;
        }
        .hero-dashboard-card .mock-data-lines {
            position: absolute;
            bottom: 20px;
            left: 24px;
            right: 24px;
            display: flex;
            gap: 6px;
            z-index: 2;
        }
        .mock-data-lines span {
            flex: 1;
            height: 3px;
            border-radius: 2px;
            background: var(--accent-blue);
            opacity: 0.7;
            animation: pulseLine 2s ease-in-out infinite;
        }
        .mock-data-lines span:nth-child(2) {
            animation-delay: 0.3s;
            background: var(--accent-cyan);
        }
        .mock-data-lines span:nth-child(3) {
            animation-delay: 0.6s;
            background: var(--accent-purple);
        }
        .mock-data-lines span:nth-child(4) {
            animation-delay: 0.9s;
            background: var(--accent-blue);
        }

        @keyframes floatCard {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
        }
        @keyframes pulseLine {
            0%,
            100% {
                opacity: 0.4;
            }
            50% {
                opacity: 1;
            }
        }

        .hero-transition {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 60px;
            z-index: 3;
            pointer-events: none;
            background: linear-gradient(to bottom, transparent, var(--bg-deep));
        }

        @media (max-width: 1023px) {
            #hero .hero-container {
                grid-template-columns: 1fr;
                gap: 36px;
                text-align: center;
                padding: 60px 20px 40px;
            }
            .hero-left {
                align-items: center;
                order: 1;
            }
            .hero-left .hero-subtitle {
                max-width: 100%;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-right {
                order: 2;
            }
            .hero-dashboard-card {
                max-width: 340px;
            }
        }
        @media (max-width: 767px) {
            #hero {
                min-height: 70vh;
                padding-top: var(--nav-height-mobile);
            }
            #hero .hero-container {
                gap: 24px;
                padding: 32px 16px;
            }
            .hero-left h1 {
                font-size: 1.75rem;
            }
            .hero-left .hero-subtitle {
                font-size: 0.95rem;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .hero-dashboard-card {
                max-width: 280px;
                padding: 16px;
            }
        }

        /* ============ SECTION COMMONS ============ */
        section {
            position: relative;
            z-index: 2;
            padding: 80px 0;
        }
        section .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        section .section-header h2 {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            font-weight: 700;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 14px;
            letter-spacing: 0.01em;
        }
        section .section-header h2::before {
            content: '';
            display: inline-block;
            width: 3px;
            height: 0.6em;
            background: var(--accent-blue);
            border-radius: 2px;
            box-shadow: 0 0 10px var(--accent-blue);
            flex-shrink: 0;
        }
        section .section-header .section-desc {
            color: var(--text-secondary);
            margin-top: 12px;
            font-size: 1rem;
            max-width: 540px;
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 767px) {
            section {
                padding: 48px 0;
            }
            section .section-header {
                margin-bottom: 32px;
            }
            section .section-header h2 {
                font-size: 1.45rem;
            }
        }

        /* ============ METRICS SECTION ============ */
        #metrics {
            background: transparent;
            padding-top: 60px;
            position: relative;
            z-index: 2;
        }
        #metrics .metrics-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .metric-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(120%);
            -webkit-backdrop-filter: blur(16px) saturate(120%);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            cursor: default;
        }
        .metric-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-card-hover);
            box-shadow: var(--shadow-card-hover);
            background: var(--bg-card-hover);
        }
        .metric-card .metric-number {
            font-family: var(--font-mono);
            font-size: clamp(1.8rem, 3.5vw, 3.5rem);
            font-weight: 700;
            color: #fff;
            text-shadow: 0 0 14px rgba(0, 198, 255, 0.5);
            line-height: 1.1;
        }
        .metric-card .metric-label {
            font-size: 0.8rem;
            color: var(--text-tertiary);
            margin-top: 8px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }
        @media (max-width: 1199px) and (min-width: 768px) {
            #metrics .metrics-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .metric-card:last-child {
                grid-column: 1 / -1;
                max-width: 33%;
                justify-self: center;
            }
        }
        @media (max-width: 767px) {
            #metrics .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
                padding: 0 16px;
            }
            .metric-card {
                padding: 20px 14px;
            }
            .metric-card .metric-number {
                font-size: 1.6rem;
            }
            .metric-card:last-child {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 420px) {
            #metrics .metrics-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ============ SERVICES SECTION ============ */
        #services {
            background: transparent;
            position: relative;
            z-index: 2;
        }
        #services .services-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            grid-template-rows: auto auto;
            gap: 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            grid-template-areas:
                "bigcard stack"
                "threecards stack";
        }
        .service-card-big {
            grid-area: bigcard;
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(120%);
            -webkit-backdrop-filter: blur(16px) saturate(120%);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            gap: 24px;
            align-items: flex-start;
            position: relative;
            overflow: hidden;
        }
        .service-card-big:hover {
            transform: translateY(-4px);
            border-color: var(--border-card-hover);
            box-shadow: var(--shadow-card-hover);
        }
        .service-card-big .svc-big-img {
            width: 160px;
            height: 120px;
            flex-shrink: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .service-card-big .svc-big-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .service-card-big .svc-big-content h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .service-card-big .svc-big-content p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .service-card-big .svc-big-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .service-card-big .svc-big-list li {
            color: var(--text-secondary);
            font-size: 0.875rem;
            padding-left: 18px;
            position: relative;
        }
        .service-card-big .svc-big-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 7px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-blue);
            box-shadow: 0 0 8px var(--accent-blue);
        }
        .services-three-cards {
            grid-area: threecards;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .service-card-stack {
            grid-area: stack;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .service-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(120%);
            -webkit-backdrop-filter: blur(16px) saturate(120%);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .service-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-card-hover);
            box-shadow: var(--shadow-card-hover);
        }
        .service-card .svc-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(0, 198, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 12px;
            font-size: 1.1rem;
            color: var(--accent-blue);
            flex-shrink: 0;
            box-shadow: 0 0 8px rgba(0, 198, 255, 0.2);
        }
        .service-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .service-card p {
            font-size: 0.85rem;
            color: var(--text-tertiary);
            line-height: 1.5;
        }
        .service-card-stack .service-card {
            flex: 1;
            padding: 18px 16px;
        }
        .service-card-stack .service-card h3 {
            font-size: 0.95rem;
        }
        .service-card-stack .service-card .svc-icon {
            width: 30px;
            height: 30px;
            font-size: 0.9rem;
        }

        @media (max-width: 1023px) {
            #services .services-grid {
                grid-template-columns: 1fr 1fr;
                grid-template-areas:
                    "bigcard bigcard"
                    "threecards threecards"
                    "stack stack";
                gap: 16px;
            }
            .services-three-cards {
                grid-template-columns: repeat(3, 1fr);
            }
            .service-card-stack {
                flex-direction: row;
                gap: 16px;
            }
            .service-card-stack .service-card {
                flex: 1;
            }
            .service-card-big {
                flex-direction: column;
            }
            .service-card-big .svc-big-img {
                width: 100%;
                height: 140px;
            }
        }
        @media (max-width: 767px) {
            #services .services-grid {
                grid-template-columns: 1fr;
                grid-template-areas:
                    "bigcard"
                    "threecards"
                    "stack";
                gap: 12px;
                padding: 0 16px;
            }
            .services-three-cards {
                grid-template-columns: 1fr;
            }
            .service-card-stack {
                flex-direction: column;
            }
            .service-card-big {
                padding: 20px;
            }
            .service-card-big .svc-big-img {
                height: 100px;
            }
        }

        /* ============ COMPARISON SECTION ============ */
        #comparison {
            background: rgba(0, 0, 0, 0.2);
            position: relative;
            z-index: 2;
        }
        #comparison .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1px 1fr;
            gap: 0;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            align-items: stretch;
        }
        .comparison-divider {
            width: 1px;
            background: linear-gradient(to bottom, transparent, var(--accent-blue), var(--accent-purple), transparent);
            box-shadow: 0 0 12px rgba(0, 198, 255, 0.5);
            position: relative;
            z-index: 1;
        }
        .comparison-col {
            padding: 28px 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .comparison-col.left {
            background: rgba(255, 255, 255, 0.02);
            border-radius: var(--radius-lg) 0 0 var(--radius-lg);
            border: 1px solid rgba(255, 68, 112, 0.2);
            border-right: none;
        }
        .comparison-col.right {
            background: rgba(0, 198, 255, 0.03);
            border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
            border: 1px solid rgba(0, 198, 255, 0.25);
            border-left: none;
        }
        .comparison-col h3 {
            font-size: 1.2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 8px;
        }
        .comparison-col.left h3 {
            color: #ff6b8a;
        }
        .comparison-col.right h3 {
            color: var(--accent-blue);
        }
        .comparison-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            line-height: 1.5;
            transition: background var(--transition-fast);
        }
        .comparison-col.right .comparison-item {
            background: rgba(0, 255, 136, 0.03);
            border: 1px solid rgba(0, 255, 136, 0.1);
        }
        .comparison-col.left .comparison-item {
            background: rgba(255, 68, 112, 0.03);
            border: 1px solid rgba(255, 68, 112, 0.08);
        }
        .comparison-item .cmp-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.75rem;
            margin-top: 2px;
        }
        .comparison-col.left .cmp-icon {
            background: rgba(255, 68, 112, 0.2);
            color: #ff6b8a;
        }
        .comparison-col.right .cmp-icon {
            background: rgba(0, 255, 136, 0.2);
            color: var(--accent-green);
            box-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
        }
        .comparison-col.right .comparison-item .cmp-text {
            color: var(--text-primary);
        }
        .comparison-col.left .comparison-item .cmp-text {
            color: var(--text-secondary);
        }

        @media (max-width: 767px) {
            #comparison .comparison-grid {
                grid-template-columns: 1fr;
                grid-template-rows: auto auto auto;
                gap: 0;
                padding: 0 16px;
            }
            .comparison-divider {
                width: 100%;
                height: 1px;
                background: linear-gradient(to right, transparent, var(--accent-blue), var(--accent-purple), transparent);
                box-shadow: 0 0 10px rgba(0, 198, 255, 0.4);
            }
            .comparison-col.left {
                border-radius: var(--radius-lg) var(--radius-lg) 0 0;
                border-right: 1px solid rgba(255, 68, 112, 0.2);
                border-bottom: none;
            }
            .comparison-col.right {
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                border-left: 1px solid rgba(0, 198, 255, 0.25);
                border-top: none;
            }
            .comparison-col {
                padding: 20px 16px;
            }
        }

        /* ============ FAQ SECTION ============ */
        #faq {
            position: relative;
            z-index: 2;
        }
        #faq .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
            padding: 0 20px;
        }
        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(120%);
            -webkit-backdrop-filter: blur(16px) saturate(120%);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }
        .faq-item.active {
            border-color: rgba(0, 198, 255, 0.35);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 198, 255, 0.1);
            background: rgba(255, 255, 255, 0.06);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            cursor: pointer;
            user-select: none;
            gap: 12px;
            min-height: 54px;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-question .faq-q-text {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-primary);
            flex: 1;
        }
        .faq-q-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent-blue);
            box-shadow: 0 0 8px var(--accent-blue);
            flex-shrink: 0;
        }
        .faq-item.active .faq-q-dot {
            background: var(--accent-cyan);
            box-shadow: 0 0 14px var(--accent-cyan);
        }
        .faq-toggle {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            transition: all var(--transition-fast);
            font-size: 1rem;
            color: var(--text-secondary);
            font-weight: 300;
            line-height: 1;
        }
        .faq-item.active .faq-toggle {
            background: rgba(0, 198, 255, 0.15);
            color: var(--accent-cyan);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 20px 18px 20px;
            padding-left: 39px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        @media (max-width: 767px) {
            #faq .faq-list {
                padding: 0 16px;
                gap: 10px;
            }
            .faq-question {
                padding: 14px 16px;
                min-height: 48px;
            }
            .faq-question .faq-q-text {
                font-size: 0.875rem;
            }
            .faq-answer-inner {
                padding-left: 30px;
                font-size: 0.825rem;
            }
        }

        /* ============ CTA / CONTACT SECTION ============ */
        #contact {
            position: relative;
            z-index: 2;
            padding-bottom: 60px;
        }
        #contact .contact-card {
            max-width: 560px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(16px) saturate(120%);
            -webkit-backdrop-filter: blur(16px) saturate(120%);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-xl);
            padding: 40px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 198, 255, 0.06);
            position: relative;
            overflow: hidden;
        }
        #contact .contact-card::before {
            content: '';
            position: absolute;
            top: -1px;
            left: -1px;
            right: -1px;
            bottom: -1px;
            border-radius: var(--radius-xl);
            padding: 1px;
            background: linear-gradient(135deg, rgba(0, 198, 255, 0.4), transparent 60%, rgba(123, 47, 255, 0.3));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
            z-index: 0;
        }
        #contact .contact-card>* {
            position: relative;
            z-index: 1;
        }
        #contact .contact-card h2 {
            text-align: center;
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        #contact .contact-card .contact-subtitle {
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 28px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-bottom: 6px;
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            min-height: 48px;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-tertiary);
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--accent-blue);
            box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
            background: rgba(255, 255, 255, 0.07);
        }
        .form-group select {
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='%238899AA'%3E%3Cpath d='M6 8L0 0h12z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
            cursor: pointer;
        }
        .form-group select option {
            background: #1a1f2b;
            color: #fff;
        }
        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }
        .btn-submit {
            width: 100%;
            padding: 15px 32px;
            border-radius: var(--radius-btn);
            font-size: 1rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            background: linear-gradient(135deg, #0098CC, var(--accent-blue));
            color: #fff;
            box-shadow: 0 0 20px rgba(0, 198, 255, 0.5), 0 0 50px rgba(0, 198, 255, 0.18), 0 0 80px rgba(0, 198, 255, 0.08);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            min-height: 52px;
            margin-top: 4px;
        }
        .btn-submit:hover {
            filter: brightness(1.15);
            box-shadow: 0 0 30px rgba(0, 198, 255, 0.6), 0 0 70px rgba(0, 198, 255, 0.25), 0 0 100px rgba(0, 198, 255, 0.1);
            transform: translateY(-2px);
        }
        .btn-submit:active {
            transform: scale(0.97);
        }
        .form-success-msg {
            display: none;
            text-align: center;
            color: var(--accent-green);
            font-weight: 600;
            padding: 16px;
            font-size: 1rem;
        }
        @media (max-width: 767px) {
            #contact .contact-card {
                padding: 24px 18px;
                border-radius: var(--radius-lg);
                margin: 0 4px;
            }
            #contact .contact-card h2 {
                font-size: 1.3rem;
            }
            .form-group input,
            .form-group select,
            .form-group textarea {
                padding: 10px 12px;
                font-size: 0.85rem;
                min-height: 44px;
            }
            .btn-submit {
                padding: 13px 24px;
                font-size: 0.95rem;
                min-height: 46px;
            }
        }

        /* ============ FOOTER ============ */
        footer.site-footer {
            background: #070B12;
            position: relative;
            z-index: 2;
            padding: 40px 0 24px;
            border-top: 1px solid transparent;
            border-image: linear-gradient(to right, transparent, var(--accent-blue), var(--accent-purple), transparent) 1;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
        }
        .footer-logo-row {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
        }
        .footer-logo-row .logo-diamond-sm {
            width: 20px;
            height: 20px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            transform: rotate(45deg);
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 198, 255, 0.4);
        }
        .footer-slogan {
            color: var(--text-secondary);
            font-size: 0.85rem;
            letter-spacing: 0.03em;
        }
        .footer-links {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            justify-content: center;
            list-style: none;
        }
        .footer-links a {
            color: var(--text-tertiary);
            font-size: 0.825rem;
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
            text-shadow: 0 0 8px rgba(0, 198, 255, 0.3);
        }
        .footer-copyright {
            color: var(--text-tertiary);
            font-size: 0.75rem;
            text-align: center;
            letter-spacing: 0.02em;
        }
        .footer-divider {
            width: 100%;
            height: 1px;
            background: linear-gradient(to right, transparent, rgba(0, 198, 255, 0.4), rgba(123, 47, 255, 0.3), transparent);
            margin: 8px 0;
        }
        @media (max-width: 767px) {
            footer.site-footer {
                padding: 28px 0 18px;
            }
            .footer-links {
                gap: 16px;
            }
            .footer-inner {
                gap: 14px;
                padding: 0 16px;
            }
        }

        /* ============ UTILITY ============ */
        .text-gradient {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }