/* roulang page: index */
:root {
            --clr-primary: #8B5CF6;
            --clr-primary-dark: #7C3AED;
            --clr-accent: #00E5FF;
            --clr-accent-glow: #00D2FF;
            --clr-highlight: #EC4899;
            --clr-bg-deep: #06060F;
            --clr-bg: #0A0A1A;
            --clr-bg-card: #12122A;
            --clr-bg-card-alt: #181835;
            --clr-bg-nav: rgba(10, 10, 26, 0.92);
            --clr-text: #EDEDF5;
            --clr-text-soft: #B0B0C8;
            --clr-text-muted: #7A7A9A;
            --clr-border: rgba(139, 92, 246, 0.2);
            --clr-border-light: rgba(255, 255, 255, 0.06);
            --clr-success: #10B981;
            --clr-warning: #F59E0B;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.55);
            --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.3), 0 0 80px rgba(0, 229, 255, 0.12);
            --shadow-glow-strong: 0 0 60px rgba(139, 92, 246, 0.45), 0 0 120px rgba(0, 229, 255, 0.2);
            --transition-fast: 0.18s ease;
            --transition: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-heading: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --max-width: 1240px;
            --nav-height: 68px;
        }

        *,
        *::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-body);
            background-color: var(--clr-bg-deep);
            color: var(--clr-text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            background-image:
                radial-gradient(ellipse at 20% 10%, rgba(139, 92, 246, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 75% 30%, rgba(0, 229, 255, 0.04) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 70%, rgba(236, 72, 153, 0.03) 0%, transparent 50%);
            background-attachment: fixed;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--clr-accent);
        }
        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;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.25;
            color: var(--clr-text);
        }
        h1 {
            font-size: clamp(2.4rem, 5vw, 3.6rem);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: clamp(1.2rem, 2vw, 1.5rem);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--clr-bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--clr-border-light);
            transition: all var(--transition);
        }
        .nav.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
            border-bottom-color: var(--clr-border);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            color: var(--clr-text);
            white-space: nowrap;
            z-index: 1001;
        }
        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 20px rgba(139, 92, 246, 0.35);
        }
        .nav-logo span {
            background: linear-gradient(135deg, #fff, #c4b5fd);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--clr-text-soft);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: #fff;
            background: rgba(139, 92, 246, 0.15);
        }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: 24px;
            box-shadow: 0 0 18px rgba(139, 92, 246, 0.3);
            margin-left: 4px;
        }
        .nav-links a.nav-cta:hover {
            box-shadow: 0 0 30px rgba(139, 92, 246, 0.5);
            background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
            color: #fff;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
            padding: 8px;
            background: transparent;
            border: none;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--clr-text);
            border-radius: 3px;
            transition: all var(--transition-fast);
            transform-origin: center;
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 6, 15, 0.55) 0%, rgba(10, 10, 26, 0.78) 40%, rgba(10, 10, 26, 0.92) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 30% 25%, rgba(139, 92, 246, 0.2) 0%, transparent 50%),
                radial-gradient(ellipse at 65% 60%, rgba(0, 229, 255, 0.12) 0%, transparent 45%);
            z-index: 2;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            text-align: center;
            max-width: 800px;
            animation: fadeInUp 0.8s ease forwards;
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(36px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: rgba(139, 92, 246, 0.2);
            color: var(--clr-accent);
            border: 1px solid rgba(139, 92, 246, 0.35);
            margin-bottom: 24px;
            animation: fadeInUp 0.8s ease 0.1s forwards;
            opacity: 0;
        }
        .hero h1 {
            margin-bottom: 20px;
            animation: fadeInUp 0.8s ease 0.2s forwards;
            opacity: 0;
            background: linear-gradient(180deg, #ffffff 0%, #c4b5fd 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: clamp(1.05rem, 1.8vw, 1.25rem);
            color: var(--clr-text-soft);
            margin-bottom: 36px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            animation: fadeInUp 0.8s ease 0.3s forwards;
            opacity: 0;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            animation: fadeInUp 0.8s ease 0.4s forwards;
            opacity: 0;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 56px;
            animation: fadeInUp 0.8s ease 0.5s forwards;
            opacity: 0;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--clr-accent), var(--clr-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: var(--clr-text-muted);
            margin-top: 4px;
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 28px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.02em;
            position: relative;
            overflow: hidden;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            color: #fff;
            box-shadow: 0 4px 24px rgba(139, 92, 246, 0.35);
        }
        .btn-primary:hover {
            box-shadow: 0 6px 36px rgba(139, 92, 246, 0.55);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }
        .btn-outline:hover {
            border-color: var(--clr-accent);
            color: var(--clr-accent);
            background: rgba(0, 229, 255, 0.06);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
            border-radius: 32px;
        }
        .btn-glow {
            box-shadow: var(--shadow-glow);
        }
        .btn-glow:hover {
            box-shadow: var(--shadow-glow-strong);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 90px 24px;
            position: relative;
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--clr-accent);
            margin-bottom: 12px;
            padding: 4px 14px;
            border-radius: 20px;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.2);
        }
        .section-header h2 {
            margin-bottom: 14px;
        }
        .section-header .section-desc {
            color: var(--clr-text-soft);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto;
        }

        /* ========== FEATURES GRID ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .feature-card {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border-light);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .feature-card:hover {
            border-color: var(--clr-border);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .feature-icon {
            width: 54px;
            height: 54px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
            background: rgba(139, 92, 246, 0.15);
            color: var(--clr-primary);
        }
        .feature-card h3 {
            margin-bottom: 10px;
            font-size: 1.2rem;
        }
        .feature-card p {
            color: var(--clr-text-soft);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .feature-card .feature-img {
            width: 100%;
            border-radius: var(--radius);
            margin-top: 18px;
            aspect-ratio: 16/10;
            object-fit: cover;
            border: 1px solid var(--clr-border-light);
        }

        /* ========== SERVICES ========== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 32px;
        }
        .service-card {
            background: var(--clr-bg-card-alt);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--clr-border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            border-color: var(--clr-border);
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
        }
        .service-card .service-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
        }
        .service-card .service-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .service-card:hover .service-img-wrap img {
            transform: scale(1.06);
        }
        .service-card .service-body {
            padding: 28px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card .service-body h3 {
            margin-bottom: 8px;
        }
        .service-card .service-body p {
            color: var(--clr-text-soft);
            font-size: 0.93rem;
            flex: 1;
            margin-bottom: 16px;
        }
        .service-card .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(139, 92, 246, 0.12);
            color: var(--clr-primary);
            border: 1px solid rgba(139, 92, 246, 0.25);
        }
        .tag-accent {
            background: rgba(0, 229, 255, 0.1);
            color: var(--clr-accent);
            border: 1px solid rgba(0, 229, 255, 0.25);
        }
        .tag-hot {
            background: rgba(236, 72, 153, 0.1);
            color: var(--clr-highlight);
            border: 1px solid rgba(236, 72, 153, 0.25);
        }

        /* ========== PROCESS / DATA ========== */
        .data-section {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            position: relative;
            padding: 100px 24px;
        }
        .data-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(6, 6, 15, 0.88);
            z-index: 1;
        }
        .data-section .container {
            position: relative;
            z-index: 2;
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 28px;
            text-align: center;
        }
        .data-card {
            background: rgba(18, 18, 42, 0.7);
            border: 1px solid var(--clr-border-light);
            border-radius: var(--radius-lg);
            padding: 36px 20px;
            backdrop-filter: blur(8px);
            transition: all var(--transition);
        }
        .data-card:hover {
            border-color: var(--clr-border);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .data-card .data-icon {
            font-size: 2.2rem;
            margin-bottom: 14px;
            color: var(--clr-accent);
        }
        .data-card .data-num {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, #fff, var(--clr-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 6px;
        }
        .data-card .data-label {
            color: var(--clr-text-soft);
            font-size: 0.9rem;
        }

        /* ========== PROCESS STEPS ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            position: relative;
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border-light);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
            counter-increment: step;
        }
        .process-step::before {
            content: counter(step);
            position: absolute;
            top: -18px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 22px rgba(139, 92, 246, 0.4);
        }
        .process-step:hover {
            border-color: var(--clr-border);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .process-step h3 {
            margin-top: 10px;
            margin-bottom: 8px;
        }
        .process-step p {
            color: var(--clr-text-soft);
            font-size: 0.9rem;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border-light);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item.active {
            border-color: var(--clr-border);
            box-shadow: 0 0 20px rgba(139, 92, 246, 0.12);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--clr-text);
            cursor: pointer;
            background: transparent;
            border: none;
            text-align: left;
            gap: 16px;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--clr-accent);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(139, 92, 246, 0.15);
            color: var(--clr-primary);
            transition: all var(--transition-fast);
            font-size: 0.8rem;
        }
        .faq-item.active .faq-question .faq-icon {
            background: var(--clr-primary);
            color: #fff;
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding var(--transition);
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            color: var(--clr-text-soft);
            font-size: 0.93rem;
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            padding: 100px 24px;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(6, 6, 15, 0.82);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            margin-bottom: 16px;
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
        }
        .cta-section .cta-desc {
            color: var(--clr-text-soft);
            font-size: 1.08rem;
            max-width: 520px;
            margin: 0 auto 32px;
        }
        .cta-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            max-width: 500px;
            margin: 0 auto;
        }
        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 14px 20px;
            border-radius: 28px;
            background: rgba(255, 255, 255, 0.06);
            border: 2px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
        }
        .cta-form input:focus {
            border-color: var(--clr-accent);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
            background: rgba(255, 255, 255, 0.1);
            outline: none;
        }
        .cta-form input::placeholder {
            color: var(--clr-text-muted);
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--clr-bg);
            border-top: 1px solid var(--clr-border-light);
            padding: 56px 24px 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 36px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .footer-col h4 {
            font-size: 1rem;
            margin-bottom: 16px;
            color: #fff;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            color: var(--clr-text-muted);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--clr-accent);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 32px;
            margin-top: 40px;
            border-top: 1px solid var(--clr-border-light);
            color: var(--clr-text-muted);
            font-size: 0.85rem;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.05);
            color: var(--clr-text-soft);
            font-size: 1rem;
            transition: all var(--transition-fast);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-social a:hover {
            background: var(--clr-primary);
            color: #fff;
            border-color: var(--clr-primary);
            box-shadow: 0 0 18px rgba(139, 92, 246, 0.4);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            }
            .features-grid {
                grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            }
            .hero-stats {
                gap: 28px;
            }
            .hero-stat .stat-num {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(6, 6, 15, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 16px;
                transform: translateY(-100%);
                transition: transform var(--transition);
                z-index: 1000;
                padding: 80px 24px 40px;
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-links a {
                font-size: 1.15rem;
                padding: 12px 24px;
            }
            .nav-links a.nav-cta {
                margin-left: 0;
            }
            .nav-toggle {
                display: flex;
            }
            .hero {
                padding: 100px 20px 60px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero-stats {
                gap: 20px;
                flex-direction: column;
                align-items: center;
            }
            .section {
                padding: 60px 16px;
            }
            .data-section {
                padding: 70px 16px;
            }
            .cta-section {
                padding: 70px 16px;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .cta-form {
                flex-direction: column;
                align-items: center;
            }
            .cta-form input {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 13px 28px;
                font-size: 0.95rem;
            }
            .data-grid {
                grid-template-columns: 1fr;
            }
            .data-card .data-num {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .footer-social {
                justify-content: center;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .feature-card {
                padding: 24px 18px;
            }
            .service-card .service-body {
                padding: 20px 16px;
            }
            .faq-question {
                font-size: 0.93rem;
                padding: 16px 18px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* Scroll reveal animation */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Focus accessibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--clr-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }