/* roulang page: index */
:root {
            --primary: #6E3FF2;
            --primary-rgb: 110, 63, 242;
            --accent: #00F0FF;
            --accent-rgb: 0, 240, 255;
            --bg: #0A0E1A;
            --bg-deeper: #060912;
            --surface: rgba(255, 255, 255, 0.04);
            --surface-hover: rgba(255, 255, 255, 0.07);
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(0, 240, 255, 0.25);
            --text-primary: #F5F6FA;
            --text-body: #B0B5CC;
            --text-weak: #6B7194;
            --gradient-main: linear-gradient(135deg, #6E3FF2, #00F0FF);
            --gradient-text: linear-gradient(135deg, #6E3FF2 0%, #A78BFA 40%, #00F0FF 100%);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 12px 40px rgba(0, 240, 255, 0.15);
            --shadow-glow: 0 0 20px rgba(110, 63, 242, 0.6);
            --shadow-glow-hover: 0 0 30px rgba(110, 63, 242, 0.8), 0 0 60px rgba(0, 240, 255, 0.5);
            --font-heading: 'Inter', 'Noto Sans SC', sans-serif;
            --font-body: 'Inter', 'Noto Sans SC', sans-serif;
            --font-mono: 'JetBrains Mono', monospace;
            --max-width: 1200px;
            --nav-height: 70px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-body);
            background-color: var(--bg);
            overflow-x: hidden;
            min-height: 100vh;
            -webkit-tap-highlight-color: transparent;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }

        ::selection {
            background: rgba(110, 63, 242, 0.4);
            color: #fff;
        }
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(110, 63, 242, 0.4);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(110, 63, 242, 0.7);
        }

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

        .section-subtitle {
            font-size: 15px;
            color: var(--text-weak);
            text-align: center;
            margin-top: 8px;
            letter-spacing: 0.5px;
            font-weight: 400;
        }

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

        .highlight-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            margin: 0 6px;
            vertical-align: middle;
            box-shadow: 0 0 8px var(--accent);
            animation: dotPulse 2s ease-in-out infinite;
        }
        @keyframes dotPulse {
            0%,
            100% {
                box-shadow: 0 0 6px var(--accent);
            }
            50% {
                box-shadow: 0 0 18px var(--accent), 0 0 30px rgba(0, 240, 255, 0.4);
            }
        }

        /* ============ NAVIGATION ============ */
        .nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(10, 14, 26, 0.7);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid transparent;
            transition: all var(--transition-smooth);
        }
        .nav::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
            opacity: 0.7;
        }
        .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 {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .nav-logo-icon {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
            position: relative;
        }
        .nav-logo-icon svg {
            width: 100%;
            height: 100%;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            letter-spacing: 0.3px;
            position: relative;
            padding: 6px 0;
            transition: color var(--transition-fast);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 1px;
            transition: width var(--transition-smooth);
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--text-primary);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border: 1.5px solid var(--accent);
            border-radius: 25px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.4px;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            background: transparent;
        }
        .nav-cta-btn:hover {
            background: var(--accent);
            color: #0A0E1A;
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.45);
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 6px;
            width: 30px;
            cursor: pointer;
            z-index: 1001;
            padding: 4px 0;
        }
        .nav-hamburger span {
            display: block;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }
        .nav-hamburger.active span:nth-child(1) {
            transform: translateY(8.5px) rotate(45deg);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: translateY(-8.5px) rotate(-45deg);
        }

        /* ============ HERO ============ */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            padding: 100px 20px 80px;
        }
        .hero-bg-layer {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .hero-bg-layer img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.25;
            filter: saturate(0.6) brightness(0.7);
        }
        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 40%, rgba(110, 63, 242, 0.18) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 60%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
                rgba(10, 14, 26, 0.55);
            z-index: 1;
        }
        .hero-canvas {
            position: absolute;
            inset: 0;
            z-index: 2;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            text-align: center;
            max-width: 780px;
            width: 100%;
        }
        .hero-badge {
            display: inline-block;
            padding: 7px 18px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 25px;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 2px;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 28px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            background: rgba(255, 255, 255, 0.03);
        }
        .hero h1 {
            font-family: var(--font-heading);
            font-size: clamp(32px, 5.5vw, 54px);
            font-weight: 900;
            letter-spacing: -0.5px;
            line-height: 1.15;
            color: var(--text-primary);
            margin-bottom: 18px;
        }
        .hero h1 .hl {
            background: var(--gradient-text);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 17px;
            color: var(--text-body);
            line-height: 1.7;
            max-width: 540px;
            margin: 0 auto 36px;
            letter-spacing: 0.2px;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.3px;
            transition: all var(--transition-smooth);
            cursor: pointer;
            white-space: nowrap;
            min-width: 140px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover {
            background: #7B52F7;
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--accent);
            color: var(--accent);
        }
        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.3);
            transform: translateY(-2px);
        }
        .hero-scroll-indicator {
            position: absolute;
            bottom: 35px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            animation: bounceDown 2s ease-in-out infinite;
        }
        .hero-scroll-indicator span {
            display: block;
            width: 2px;
            height: 28px;
            background: var(--accent);
            border-radius: 1px;
            box-shadow: 0 0 12px var(--accent);
            opacity: 0.8;
        }
        .hero-scroll-indicator .arrow-head {
            width: 10px;
            height: 10px;
            border-right: 2px solid var(--accent);
            border-bottom: 2px solid var(--accent);
            transform: rotate(45deg);
            box-shadow: 2px 2px 8px var(--accent);
            opacity: 0.8;
            background: transparent;
        }
        @keyframes bounceDown {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
                opacity: 1;
            }
            50% {
                transform: translateX(-50%) translateY(12px);
                opacity: 0.5;
            }
        }

        /* ============ SECTIONS ============ */
        section {
            padding: 100px 20px;
            position: relative;
        }
        section .section-header {
            text-align: center;
            margin-bottom: 60px;
        }
        section h2 {
            font-family: var(--font-heading);
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            line-height: 1.25;
            text-align: center;
        }
        section h2 .hl {
            background: var(--gradient-text);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        #services {
            background: radial-gradient(ellipse at 30% 20%, rgba(110, 63, 242, 0.06) 0%, transparent 55%);
        }
        #advantages {
            background: radial-gradient(ellipse at 70% 50%, rgba(0, 240, 255, 0.04) 0%, transparent 55%);
        }
        #cases {
            background: radial-gradient(ellipse at 50% 80%, rgba(110, 63, 242, 0.05) 0%, transparent 55%);
        }
        #solutions {
            background: radial-gradient(ellipse at 40% 30%, rgba(0, 240, 255, 0.03) 0%, transparent 50%);
        }
        #faq {
            background: radial-gradient(ellipse at 60% 60%, rgba(110, 63, 242, 0.05) 0%, transparent 50%);
        }
        #contact {
            background: radial-gradient(ellipse at 50% 40%, rgba(0, 240, 255, 0.06) 0%, transparent 50%),
                url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            background-blend-mode: overlay;
            position: relative;
        }
        #contact::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 14, 26, 0.7);
            z-index: 0;
        }
        #contact .container {
            position: relative;
            z-index: 1;
        }

        /* ============ SERVICES CARDS ============ */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            align-items: start;
        }
        .service-card {
            background: var(--surface);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all var(--transition-smooth);
            cursor: pointer;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            position: relative;
            overflow: hidden;
        }
        .service-card:nth-child(2) {
            margin-top: 20px;
            padding-bottom: 40px;
        }
        .service-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            background: var(--surface-hover);
        }
        .service-card-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(110, 63, 242, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 2px;
            transition: all var(--transition-smooth);
        }
        .service-card:hover .service-card-icon {
            background: rgba(0, 240, 255, 0.15);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
        }
        .service-card-icon svg {
            width: 24px;
            height: 24px;
            stroke: var(--accent);
            fill: none;
            stroke-width: 1.8;
        }
        .service-card-body h3 {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.1px;
        }
        .service-card-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.55;
            margin-bottom: 12px;
        }
        .service-card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.3px;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: gap var(--transition-fast);
        }
        .service-card-link:hover {
            gap: 10px;
            color: #fff;
        }
        .service-card-link svg {
            width: 14px;
            height: 14px;
        }

        /* ============ ADVANTAGES ============ */
        .advantages-row {
            display: flex;
            gap: 40px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .advantage-item {
            text-align: center;
            flex: 1;
            min-width: 180px;
            max-width: 280px;
            position: relative;
            padding: 20px;
        }
        .advantage-number {
            font-family: var(--font-mono);
            font-size: clamp(38px, 5vw, 56px);
            font-weight: 700;
            letter-spacing: -0.5px;
            background: var(--gradient-text);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .advantage-label {
            font-size: 14px;
            color: var(--text-weak);
            letter-spacing: 0.4px;
            font-weight: 500;
        }
        .advantage-item::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(110, 63, 242, 0.12) 0%, transparent 70%);
            pointer-events: none;
            z-index: -1;
        }

        /* ============ CASES ============ */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .case-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--surface);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .case-card:nth-child(1) .case-img-wrap {
            aspect-ratio: 16 / 9;
        }
        .case-card:nth-child(2) .case-img-wrap {
            aspect-ratio: 4 / 3;
        }
        .case-card:nth-child(3) .case-img-wrap {
            aspect-ratio: 16 / 9;
        }
        .case-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
        }
        .case-img-wrap {
            position: relative;
            overflow: hidden;
        }
        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .case-card:hover .case-img-wrap img {
            transform: scale(1.06);
        }
        .case-img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(110, 63, 242, 0.35) 0%, rgba(10, 14, 26, 0.7) 100%);
            transition: background var(--transition-smooth);
        }
        .case-card:hover .case-img-overlay {
            background: linear-gradient(180deg, rgba(0, 240, 255, 0.3) 0%, rgba(10, 14, 26, 0.75) 100%);
        }
        .case-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 1px;
            color: #fff;
            background: rgba(110, 63, 242, 0.7);
            padding: 4px 12px;
            border-radius: 14px;
            z-index: 2;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }
        .case-card-body {
            padding: 20px 18px;
        }
        .case-card-body h3 {
            font-family: var(--font-heading);
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            letter-spacing: -0.1px;
        }
        .case-card-body p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.5;
        }

        /* ============ SOLUTIONS STEPS ============ */
        .steps-container {
            display: flex;
            justify-content: center;
            gap: 0;
            flex-wrap: wrap;
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }
        .step-item {
            flex: 1;
            min-width: 140px;
            max-width: 200px;
            text-align: center;
            position: relative;
            padding: 0 16px;
        }
        .step-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            border: 2px solid transparent;
            background: var(--surface);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-mono);
            font-size: 22px;
            font-weight: 700;
            color: var(--accent);
            position: relative;
            z-index: 2;
            transition: all var(--transition-smooth);
        }
        .step-circle::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            z-index: -1;
            opacity: 0.6;
            transition: opacity var(--transition-smooth);
        }
        .step-item:hover .step-circle {
            color: #fff;
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.4);
        }
        .step-item:hover .step-circle::before {
            opacity: 1;
        }
        .step-item h4 {
            font-family: var(--font-heading);
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 5px;
            letter-spacing: -0.1px;
        }
        .step-item p {
            font-size: 12px;
            color: var(--text-weak);
            line-height: 1.5;
        }
        .step-connector {
            position: absolute;
            top: 28px;
            left: calc(50% + 28px);
            width: calc(100% - 56px);
            height: 2px;
            border-top: 2px dashed rgba(0, 240, 255, 0.3);
            z-index: 1;
            pointer-events: none;
        }
        .step-item:last-child .step-connector {
            display: none;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--surface);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.14);
        }
        .faq-item.active {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 20px;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-primary);
            letter-spacing: 0.1px;
            position: relative;
        }
        .faq-indicator {
            width: 3px;
            height: 22px;
            border-radius: 2px;
            background: var(--primary);
            flex-shrink: 0;
            transition: all var(--transition-smooth);
        }
        .faq-item.active .faq-indicator {
            background: var(--accent);
            box-shadow: 0 0 10px var(--accent);
            height: 28px;
        }
        .faq-toggle-icon {
            margin-left: auto;
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            position: relative;
            transition: transform var(--transition-smooth);
        }
        .faq-toggle-icon::before,
        .faq-toggle-icon::after {
            content: '';
            position: absolute;
            background: var(--text-weak);
            border-radius: 1px;
            transition: all var(--transition-smooth);
        }
        .faq-toggle-icon::before {
            width: 100%;
            height: 2px;
            top: 50%;
            left: 0;
            transform: translateY(-50%);
        }
        .faq-toggle-icon::after {
            width: 2px;
            height: 100%;
            left: 50%;
            top: 0;
            transform: translateX(-50%);
        }
        .faq-item.active .faq-toggle-icon::after {
            transform: translateX(-50%) rotate(90deg);
            opacity: 0;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            background: rgba(255, 255, 255, 0.015);
        }
        .faq-item.active .faq-answer {
            max-height: 200px;
        }
        .faq-answer-inner {
            padding: 0 20px 18px 37px;
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.65;
        }

        /* ============ CTA / CONTACT ============ */
        .cta-card {
            max-width: 580px;
            margin: 0 auto;
            background: var(--surface);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            position: relative;
            overflow: hidden;
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            border: 2px solid rgba(110, 63, 242, 0.25);
            pointer-events: none;
            z-index: 0;
        }
        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            border: 2px solid rgba(0, 240, 255, 0.2);
            pointer-events: none;
            z-index: 0;
        }
        .cta-card>* {
            position: relative;
            z-index: 1;
        }
        .cta-card h2 {
            font-size: 26px;
            margin-bottom: 8px;
        }
        .form-group {
            position: relative;
            margin-bottom: 18px;
        }
        .form-group input,
        .form-group select {
            width: 100%;
            padding: 14px 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 14px;
            transition: all var(--transition-fast);
            -webkit-appearance: none;
            appearance: none;
        }
        .form-group select {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7194' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
            cursor: pointer;
        }
        .form-group select option {
            background: #1a1f2e;
            color: #F5F6FA;
        }
        .form-group input:focus,
        .form-group select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.08);
            background: rgba(255, 255, 255, 0.07);
        }
        .form-group label {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 14px;
            color: var(--text-weak);
            pointer-events: none;
            transition: all var(--transition-fast);
            background: transparent;
            padding: 0 4px;
        }
        .form-group input:focus~label,
        .form-group input:not(:placeholder-shown)~label,
        .form-group select:focus~label,
        .form-group select:not([value=""])~label {
            top: -8px;
            left: 12px;
            font-size: 11px;
            color: var(--accent);
            background: #0f1320;
            padding: 0 6px;
            border-radius: 3px;
        }
        .form-group input::placeholder {
            color: transparent;
        }
        .btn-submit {
            width: 100%;
            padding: 15px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            font-weight: 700;
            font-size: 15px;
            letter-spacing: 0.4px;
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-smooth);
            margin-top: 8px;
        }
        .btn-submit:hover {
            box-shadow: var(--shadow-glow-hover);
            background: #7B52F7;
            transform: translateY(-2px);
        }

        /* ============ FOOTER ============ */
        .footer {
            background: var(--bg-deeper);
            padding: 30px 20px;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-copy {
            font-size: 13px;
            color: var(--text-weak);
            letter-spacing: 0.2px;
        }
        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .footer-links a {
            font-size: 12px;
            color: var(--text-weak);
            transition: color var(--transition-fast);
            letter-spacing: 0.2px;
        }
        .footer-links a:hover {
            color: var(--accent);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .service-card:nth-child(2) {
                margin-top: 0;
                padding-bottom: 32px;
            }
            .service-card:nth-child(3) {
                grid-column: span 2;
                max-width: 400px;
                justify-self: center;
            }
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .cases-grid .case-card:nth-child(3) {
                grid-column: span 2;
                max-width: 400px;
                justify-self: center;
            }
            .steps-container {
                gap: 10px;
            }
            .step-item {
                min-width: 120px;
                max-width: 160px;
                padding: 0 10px;
            }
            .step-connector {
                left: calc(50% + 22px);
                width: calc(100% - 44px);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 100%;
                height: 100vh;
                background: rgba(10, 14, 26, 0.95);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 32px;
                transition: right var(--transition-smooth);
                z-index: 999;
            }
            .nav-links.open {
                right: 0;
            }
            .nav-link {
                font-size: 20px;
                font-weight: 600;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-links .nav-cta-btn-mobile {
                display: inline-flex;
                margin-top: 8px;
                padding: 12px 28px;
                font-size: 15px;
            }
            .services-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .service-card:nth-child(2) {
                margin-top: 0;
                padding-bottom: 28px;
            }
            .service-card:nth-child(3) {
                grid-column: span 1;
                max-width: none;
                justify-self: auto;
            }
            .cases-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cases-grid .case-card:nth-child(3) {
                grid-column: span 1;
                max-width: none;
                justify-self: auto;
            }
            .case-card:nth-child(1) .case-img-wrap,
            .case-card:nth-child(2) .case-img-wrap,
            .case-card:nth-child(3) .case-img-wrap {
                aspect-ratio: 16 / 9;
            }
            .steps-container {
                flex-direction: column;
                align-items: center;
                gap: 0;
            }
            .step-item {
                max-width: 280px;
                min-width: auto;
                width: 100%;
                padding: 16px 0;
                display: flex;
                align-items: flex-start;
                gap: 16px;
                text-align: left;
            }
            .step-circle {
                margin: 0;
                flex-shrink: 0;
                width: 44px;
                height: 44px;
                font-size: 18px;
            }
            .step-connector {
                display: none;
            }
            .step-item:not(:last-child)::after {
                content: '';
                position: absolute;
                left: 22px;
                top: 60px;
                width: 2px;
                height: calc(100% - 44px);
                border-left: 2px dashed rgba(0, 240, 255, 0.3);
                z-index: 1;
                pointer-events: none;
            }
            .advantages-row {
                flex-direction: column;
                align-items: center;
                gap: 20px;
            }
            .advantage-item {
                max-width: 220px;
            }
            .faq-question {
                font-size: 14px;
                padding: 16px;
            }
            .faq-answer-inner {
                padding: 0 16px 16px 33px;
                font-size: 13px;
            }
            .cta-card {
                padding: 28px 20px;
            }
            .hero {
                min-height: 90vh;
                padding: 80px 16px 60px;
            }
            section {
                padding: 64px 16px;
            }
            section .section-header {
                margin-bottom: 36px;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .btn {
                padding: 13px 24px;
                font-size: 14px;
                min-width: auto;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .hero-btns .btn {
                width: 80%;
                max-width: 300px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 14px;
            }
            .hero-badge {
                font-size: 10px;
                padding: 5px 14px;
                letter-spacing: 1.5px;
            }
            .btn {
                padding: 12px 20px;
                font-size: 13px;
                border-radius: 25px;
            }
            section h2 {
                font-size: 24px;
            }
            .service-card {
                padding: 20px 16px;
                gap: 14px;
            }
            .service-card-icon {
                width: 38px;
                height: 38px;
            }
            .service-card-icon svg {
                width: 20px;
                height: 20px;
            }
            .service-card-body h3 {
                font-size: 16px;
            }
            .case-card-body {
                padding: 14px 12px;
            }
            .case-card-body h3 {
                font-size: 14px;
            }
            .step-item {
                gap: 12px;
            }
            .step-circle {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }
            .step-item:not(:last-child)::after {
                left: 18px;
                top: 52px;
                height: calc(100% - 36px);
            }
            .cta-card {
                padding: 22px 16px;
            }
            .cta-card h2 {
                font-size: 22px;
            }
        }