/* roulang page: index */
:root {
            --color-primary: #8b5cf6;
            --color-primary-glow: #a78bfa;
            --color-accent: #06b6d4;
            --color-accent-glow: #22d3ee;
            --color-highlight: #ec4899;
            --color-bg-deep: #06060d;
            --color-bg: #0d0d1a;
            --color-bg-surface: #141428;
            --color-bg-card: #181830;
            --color-bg-elevated: #1e1e3a;
            --color-text: #f1f1f6;
            --color-text-secondary: #b0b0c8;
            --color-text-muted: #6b6b88;
            --color-border: #252545;
            --color-border-light: #333358;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
            --shadow-glow-purple: 0 0 24px rgba(139, 92, 246, 0.35);
            --shadow-glow-cyan: 0 0 24px rgba(6, 182, 212, 0.35);
            --shadow-glow-pink: 0 0 24px rgba(236, 72, 153, 0.3);
            --transition-fast: 0.18s ease;
            --transition: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', system-ui, sans-serif;
            --max-width: 1200px;
            --header-height: 68px;
        }

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

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

        body {
            font-family: var(--font-body);
            background-color: var(--color-bg-deep);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
            background-image:
                radial-gradient(ellipse at 20% 20%, rgba(139, 92, 246, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 35%, rgba(6, 182, 212, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 80%, rgba(236, 72, 153, 0.04) 0%, transparent 55%);
            background-attachment: fixed;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(10, 10, 22, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--transition), border-color var(--transition);
        }

        .header.scrolled {
            background: rgba(8, 8, 18, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.1);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
        }

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

        .logo {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
            position: relative;
            z-index: 1001;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: var(--shadow-glow-purple);
            flex-shrink: 0;
        }

        .logo-text {
            background: linear-gradient(135deg, #fff 20%, var(--color-primary-glow) 60%, var(--color-accent-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .nav-link:hover,
        .nav-link:focus-visible {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-link.active {
            color: #fff;
            background: rgba(139, 92, 246, 0.18);
            font-weight: 600;
            box-shadow: 0 0 12px rgba(139, 92, 246, 0.2);
        }

        .nav-link:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--color-primary), var(--color-highlight));
            color: #fff;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(139, 92, 246, 0.35);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 6px 24px rgba(139, 92, 246, 0.55);
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(139, 92, 246, 0.3);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
            width: 40px;
            height: 32px;
            justify-content: center;
            align-items: center;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 3px;
            transition: all var(--transition-fast);
            transform-origin: center;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* Hero Section */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            overflow: hidden;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-attachment: fixed;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(6, 6, 13, 0.72) 0%,
                    rgba(10, 10, 26, 0.78) 35%,
                    rgba(13, 13, 26, 0.88) 70%,
                    var(--color-bg-deep) 100%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(circle at 30% 25%, rgba(139, 92, 246, 0.18) 0%, transparent 45%),
                radial-gradient(circle at 65% 40%, rgba(6, 182, 212, 0.14) 0%, transparent 40%),
                radial-gradient(circle at 50% 70%, rgba(236, 72, 153, 0.1) 0%, transparent 40%);
            z-index: 1;
            animation: heroGlow 8s ease-in-out infinite alternate;
        }

        @keyframes heroGlow {
            0% {
                opacity: 0.7;
                transform: scale(1);
            }
            100% {
                opacity: 1;
                transform: scale(1.08);
            }
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            animation: fadeInUp 0.8s ease-out;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 18px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-accent-glow);
            margin-bottom: 24px;
            letter-spacing: 0.04em;
            animation: pulseBadge 2.5s ease-in-out infinite;
        }

        @keyframes pulseBadge {
            0%,
            100% {
                border-color: rgba(255, 255, 255, 0.14);
                box-shadow: 0 0 0 rgba(6, 182, 212, 0);
            }
            50% {
                border-color: rgba(6, 182, 212, 0.5);
                box-shadow: 0 0 20px rgba(6, 182, 212, 0.2);
            }
        }

        .hero-badge i {
            font-size: 0.75rem;
            color: var(--color-success);
        }

        .hero h1 {
            font-family: var(--font-heading);
            font-size: clamp(2.6rem, 6vw, 4.5rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: 0.02em;
            margin-bottom: 18px;
            background: linear-gradient(135deg, #ffffff 15%, #d4c5ff 45%, #a5f0ff 75%, #ffffff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            filter: drop-shadow(0 0 28px rgba(139, 92, 246, 0.5));
        }

        .hero-subtitle {
            font-size: clamp(1.05rem, 2vw, 1.3rem);
            color: var(--color-text-secondary);
            margin-bottom: 12px;
            font-weight: 400;
            letter-spacing: 0.03em;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 36px;
        }

        .hero-tag {
            padding: 7px 16px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .hero-tag:hover {
            border-color: rgba(139, 92, 246, 0.5);
            color: #fff;
            box-shadow: 0 0 16px rgba(139, 92, 246, 0.2);
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--color-primary), #6d28d9);
            color: #fff;
            box-shadow: 0 6px 24px rgba(139, 92, 246, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .btn-primary:hover {
            box-shadow: 0 10px 36px rgba(139, 92, 246, 0.6);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 16px rgba(139, 92, 246, 0.3);
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.04);
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(4px);
        }

        .btn-outline:hover {
            border-color: rgba(255, 255, 255, 0.45);
            background: rgba(255, 255, 255, 0.08);
            box-shadow: 0 0 20px rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        /* Sections General */
        .section {
            padding: 90px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary-glow);
            margin-bottom: 10px;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            background: rgba(139, 92, 246, 0.1);
            border: 1px solid rgba(139, 92, 246, 0.2);
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            letter-spacing: 0.02em;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.25;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 620px;
            margin: 0 auto;
            letter-spacing: 0.02em;
        }

        /* Features Section */
        #features {
            background: var(--color-bg);
            position: relative;
        }

        #features::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 1px;
            height: 60px;
            background: linear-gradient(180deg, transparent, rgba(139, 92, 246, 0.4), transparent);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .feature-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 24px 28px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            border-radius: 0 0 6px 6px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            opacity: 0;
            transition: all var(--transition);
        }

        .feature-card:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-lg), 0 0 40px rgba(139, 92, 246, 0.08);
            transform: translateY(-4px);
        }

        .feature-card:hover::before {
            opacity: 1;
            width: 80px;
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.5rem;
            background: rgba(139, 92, 246, 0.12);
            color: var(--color-primary-glow);
            transition: all var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: rgba(139, 92, 246, 0.22);
            box-shadow: var(--shadow-glow-purple);
            color: #fff;
        }

        .feature-card h3 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
            letter-spacing: 0.02em;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            letter-spacing: 0.01em;
        }

        /* Services Section */
        #services {
            background: var(--color-bg-deep);
            position: relative;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-lg), 0 0 50px rgba(139, 92, 246, 0.06);
            transform: translateY(-3px);
        }

        .service-card-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            border-bottom: 1px solid var(--color-border);
            transition: transform var(--transition-slow);
        }

        .service-card:hover .service-card-img {
            transform: scale(1.04);
        }

        .service-card-body {
            padding: 24px 22px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .service-card-badge {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            background: rgba(6, 182, 212, 0.12);
            color: var(--color-accent-glow);
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .service-card h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }

        .service-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.65;
            flex: 1;
            letter-spacing: 0.01em;
        }

        .service-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary-glow);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .service-card-link:hover {
            color: #fff;
            gap: 10px;
        }

        /* Process Section */
        #process {
            background: var(--color-bg);
            position: relative;
        }

        .process-bracket {
            display: flex;
            align-items: stretch;
            justify-content: center;
            gap: 0;
            flex-wrap: nowrap;
            position: relative;
        }

        .process-step {
            flex: 1;
            min-width: 140px;
            max-width: 220px;
            text-align: center;
            position: relative;
            padding: 20px 12px;
        }

        .process-step:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 66px;
            right: -20px;
            width: 40px;
            height: 2px;
            background: linear-gradient(90deg, rgba(139, 92, 246, 0.6), rgba(6, 182, 212, 0.6));
            border-radius: 2px;
            z-index: 0;
        }

        .process-step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--color-bg-elevated);
            border: 2px solid var(--color-border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin: 0 auto 16px;
            position: relative;
            z-index: 1;
            transition: all var(--transition);
            letter-spacing: 0.02em;
        }

        .process-step:hover .process-step-num {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-glow-purple);
            background: rgba(139, 92, 246, 0.2);
        }

        .process-step h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }

        .process-step p {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            line-height: 1.5;
            letter-spacing: 0.01em;
        }

        /* Stats Section */
        #stats {
            background: var(--color-bg-deep);
            position: relative;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        #stats::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(6, 6, 13, 0.88);
            z-index: 1;
        }

        #stats .container {
            position: relative;
            z-index: 2;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: rgba(20, 20, 40, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 32px 20px;
            text-align: center;
            backdrop-filter: blur(8px);
            transition: all var(--transition);
        }

        .stat-card:hover {
            border-color: rgba(255, 255, 255, 0.18);
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .stat-number {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 900;
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, var(--color-primary-glow), var(--color-accent-glow));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 6px;
            line-height: 1.1;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            font-weight: 500;
            letter-spacing: 0.03em;
        }

        /* FAQ Section */
        #faq {
            background: var(--color-bg);
            position: relative;
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--color-border-light);
        }

        .faq-item.active {
            border-color: var(--color-primary);
            box-shadow: 0 0 24px rgba(139, 92, 246, 0.12);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: #fff;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: left;
            gap: 14px;
        }

        .faq-question:hover {
            color: var(--color-primary-glow);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all var(--transition);
            color: var(--color-text-muted);
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            background: rgba(139, 92, 246, 0.2);
            color: var(--color-primary-glow);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            letter-spacing: 0.01em;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* CTA Section */
        #contact {
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            background-attachment: fixed;
            position: relative;
            padding: 100px 0;
        }

        #contact::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 10, 26, 0.9) 0%, rgba(8, 8, 20, 0.92) 100%);
            z-index: 1;
        }

        #contact .container {
            position: relative;
            z-index: 2;
        }

        .cta-card {
            max-width: 650px;
            margin: 0 auto;
            text-align: center;
            background: rgba(20, 20, 42, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-xl);
            padding: 48px 36px;
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow-lg);
        }

        .cta-card h2 {
            font-family: var(--font-heading);
            font-size: clamp(1.6rem, 3.5vw, 2.2rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .cta-card p {
            font-size: 1rem;
            color: var(--color-text-secondary);
            margin-bottom: 28px;
            letter-spacing: 0.02em;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-input {
            flex: 1;
            min-width: 240px;
            padding: 13px 18px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.06);
            border: 1.5px solid rgba(255, 255, 255, 0.15);
            color: #fff;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
        }

        .cta-input::placeholder {
            color: var(--color-text-muted);
        }
        .cta-input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 20px rgba(139, 92, 246, 0.25);
            background: rgba(255, 255, 255, 0.08);
            outline: none;
        }

        .cta-submit {
            padding: 13px 28px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, var(--color-primary), var(--color-highlight));
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.03em;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(139, 92, 246, 0.35);
            white-space: nowrap;
            border: none;
        }

        .cta-submit:hover {
            box-shadow: 0 8px 30px rgba(139, 92, 246, 0.55);
            transform: translateY(-2px);
        }
        .cta-submit:active {
            transform: translateY(0);
        }
        .cta-submit:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        /* Footer */
        .footer {
            background: var(--color-bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 50px 0 30px;
            position: relative;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand .logo {
            margin-bottom: 12px;
            font-size: 1.3rem;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            letter-spacing: 0.01em;
        }

        .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
            letter-spacing: 0.01em;
        }

        .footer-col ul li a:hover {
            color: var(--color-primary-glow);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            text-align: center;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            letter-spacing: 0.02em;
        }

        /* Back to top */
        .back-to-top {
            position: fixed;
            bottom: 28px;
            right: 28px;
            z-index: 900;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border-light);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition);
            opacity: 0;
            pointer-events: none;
            transform: translateY(10px);
            box-shadow: var(--shadow);
        }

        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }

        .back-to-top:hover {
            background: var(--color-primary);
            border-color: var(--color-primary);
            box-shadow: var(--shadow-glow-purple);
            transform: translateY(-3px);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .process-bracket {
                flex-wrap: wrap;
                gap: 20px;
            }
            .process-step:not(:last-child)::after {
                display: none;
            }
            .process-step {
                flex: 0 0 calc(50% - 10px);
                max-width: calc(50% - 10px);
                min-width: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }

            .nav {
                position: fixed;
                top: 0;
                right: 0;
                width: 280px;
                height: 100vh;
                background: rgba(14, 14, 30, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 90px 28px 40px;
                gap: 4px;
                transform: translateX(100%);
                transition: transform 0.35s ease;
                z-index: 1000;
                border-left: 1px solid rgba(255, 255, 255, 0.08);
                box-shadow: -8px 0 30px rgba(0, 0, 0, 0.6);
            }

            .nav.open {
                transform: translateX(0);
            }

            .nav-link {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius);
                font-size: 1rem;
                justify-content: flex-start;
            }

            .nav-cta-btn {
                width: 100%;
                justify-content: center;
                margin-top: 8px;
                padding: 12px 20px;
                border-radius: var(--radius);
            }

            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .services-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .service-card-img {
                height: 180px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .process-step {
                flex: 0 0 100%;
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .section {
                padding: 60px 0;
            }
            .hero {
                min-height: 90vh;
                padding: 100px 20px 60px;
            }
            .cta-card {
                padding: 32px 20px;
            }
            .back-to-top {
                bottom: 20px;
                right: 16px;
                width: 38px;
                height: 38px;
            }
        }

        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 22px 14px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .stat-label {
                font-size: 0.78rem;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .service-card-img {
                height: 160px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-input {
                min-width: auto;
            }
            .cta-submit {
                width: 100%;
                justify-content: center;
            }
            .process-bracket {
                flex-direction: column;
                align-items: center;
                gap: 16px;
            }
            .process-step {
                max-width: 100%;
                flex: 1;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section {
                padding: 48px 0;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .nav {
                width: 100%;
            }
        }

        /* Mobile nav overlay */
        .nav-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .nav-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        /* Reduced motion */
        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }