/* roulang page: index */
:root {
            --bg-deep: #0F0F0F;
            --bg-card: #1A1A2E;
            --text-white: #FFFFFF;
            --text-muted: #A0A0B8;
            --accent-purple: #7C3AED;
            --accent-green: #10B981;
            --accent-purple-dark: #4C1D95;
            --border-subtle: rgba(124, 58, 237, 0.18);
            --border-glow: rgba(16, 185, 129, 0.6);
            --shadow-glow: rgba(124, 58, 237, 0.25);
            --radius-card: 16px;
            --radius-btn: 8px;
            --radius-full: 50%;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --section-gap: 120px;
            --section-gap-mobile: 60px;
            --max-width: 1280px;
            --transition-fast: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-deep);
            color: var(--text-white);
            line-height: 1.8;
            font-size: 16px;
            font-weight: 400;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            outline: none;
        }

        button:focus-visible,
        a:focus-visible {
            outline: 3px solid var(--accent-green);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: inherit;
            outline: none;
            border: none;
        }

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

        /* ===== HEADER / NAV ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 15, 15, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(124, 58, 237, 0.15);
            transition: var(--transition-fast);
            height: 72px;
            display: flex;
            align-items: center;
        }

        .site-header.scrolled {
            background: rgba(15, 15, 15, 0.95);
            border-bottom-color: rgba(124, 58, 237, 0.3);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

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

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 1px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            color: var(--accent-purple);
            font-size: 22px;
            animation: logoPulse 2.5s ease-in-out infinite;
        }

        @keyframes logoPulse {
            0%,
            100% {
                filter: drop-shadow(0 0 6px rgba(124, 58, 237, 0.6));
            }
            50% {
                filter: drop-shadow(0 0 16px rgba(124, 58, 237, 1));
            }
        }

        .logo-text {
            background: linear-gradient(135deg, #FFFFFF 0%, #C4B5FD 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            padding: 6px 0;
            transition: var(--transition-fast);
            letter-spacing: 0.5px;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent-green);
            transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        .nav-links a:hover::after,
        .nav-links a.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
            padding: 8px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-white);
            border-radius: 2px;
            transition: var(--transition-fast);
            transform-origin: center;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(8.5px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-8.5px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(10, 10, 18, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 40px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.35s ease;
        }

        .mobile-menu.open {
            display: flex;
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-menu a {
            font-size: 24px;
            color: var(--text-white);
            font-weight: 600;
            letter-spacing: 1px;
            transition: var(--transition-fast);
            position: relative;
        }

        .mobile-menu a:hover {
            color: var(--accent-green);
            text-shadow: 0 0 20px rgba(16, 185, 129, 0.5);
        }

        /* ===== HERO ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            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: radial-gradient(ellipse at center, transparent 0%, rgba(15, 15, 15, 0.55) 40%, rgba(15, 15, 15, 0.9) 100%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(circle at 20% 30%, rgba(124, 58, 237, 0.12) 0%, transparent 50%),
                radial-gradient(circle at 75% 65%, rgba(16, 185, 129, 0.08) 0%, transparent 50%);
            z-index: 2;
            pointer-events: none;
        }

        .hero-particles {
            position: absolute;
            inset: 0;
            z-index: 3;
            pointer-events: none;
            overflow: hidden;
        }

        .hero-particle {
            position: absolute;
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: var(--accent-purple);
            animation: floatUp 8s linear infinite;
            opacity: 0;
        }

        .hero-particle:nth-child(odd) {
            background: var(--accent-green);
            animation-duration: 10s;
            animation-delay: 2s;
        }
        .hero-particle:nth-child(3n) {
            animation-duration: 6s;
            animation-delay: 4s;
        }
        .hero-particle:nth-child(4n+1) {
            animation-duration: 12s;
            animation-delay: 1s;
        }
        .hero-particle:nth-child(5n+2) {
            animation-duration: 7s;
            animation-delay: 3s;
        }

        @keyframes floatUp {
            0% {
                transform: translateY(100vh) translateX(0);
                opacity: 0;
            }
            10% {
                opacity: 0.7;
            }
            30% {
                opacity: 0.3;
            }
            60% {
                opacity: 0.6;
            }
            90% {
                opacity: 0.1;
            }
            100% {
                transform: translateY(-10vh) translateX(40px);
                opacity: 0;
            }
        }

        .hero-content {
            position: relative;
            z-index: 5;
            text-align: center;
            max-width: 800px;
            padding: 0 24px;
        }

        .hero h1 {
            font-size: clamp(36px, 6vw, 64px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -1px;
            background: linear-gradient(135deg, #FFFFFF 0%, #E2D9FF 60%, #C4B5FD 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: none;
        }

        .hero-subtitle {
            font-size: clamp(16px, 2.2vw, 20px);
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.6;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--transition-fast);
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #7C3AED, #4C1D95);
            color: #FFFFFF;
            box-shadow: 0 4px 20px rgba(124, 58, 237, 0.35);
            position: relative;
            overflow: hidden;
        }

        .btn-primary::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 60%);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .btn-primary:hover {
            filter: brightness(1.2);
            box-shadow: 0 6px 28px rgba(124, 58, 237, 0.5);
            transform: translateY(-2px);
        }
        .btn-primary:hover::before {
            opacity: 1;
        }

        .btn-secondary {
            background: transparent;
            border: 2px solid var(--accent-green);
            color: var(--accent-green);
        }

        .btn-secondary:hover {
            background: var(--accent-green);
            color: var(--bg-deep);
            box-shadow: 0 4px 20px rgba(16, 185, 129, 0.35);
            transform: translateY(-2px);
        }

        .hero-scroll-indicator {
            position: absolute;
            bottom: 36px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 5;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 12px;
            letter-spacing: 2px;
            animation: bounceDown 2s ease-in-out infinite;
        }

        .hero-scroll-indicator .scroll-line {
            width: 1px;
            height: 32px;
            background: linear-gradient(to bottom, var(--accent-purple), transparent);
            border-radius: 1px;
        }

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

        /* ===== SECTIONS COMMON ===== */
        .section {
            padding: var(--section-gap) 0;
            position: relative;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--accent-green);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text-white);
            letter-spacing: -0.5px;
        }

        .section-desc {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 48px;
            font-size: 16px;
            line-height: 1.8;
            text-align: center;
        }

        /* ===== SERVICES ===== */
        #services {
            background: var(--bg-deep);
            position: relative;
        }

        #services::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 1px;
            background: linear-gradient(to right, transparent, rgba(124, 58, 237, 0.3), transparent);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .service-card {
            background: rgba(26, 26, 46, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            border: 1px solid var(--border-subtle);
            transition: var(--transition-smooth);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-card);
            opacity: 0;
            transition: opacity 0.4s;
            background: radial-gradient(circle at 50% 30%, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .service-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 8px 24px var(--shadow-glow);
            transform: translateY(-6px);
        }
        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 60px;
            height: 60px;
            border-radius: var(--radius-full);
            background: rgba(124, 58, 237, 0.12);
            color: var(--accent-green);
            font-size: 26px;
            margin-bottom: 20px;
            transition: var(--transition-fast);
            position: relative;
            z-index: 1;
        }

        .service-card:hover .service-icon {
            background: rgba(16, 185, 129, 0.15);
            box-shadow: 0 0 28px rgba(16, 185, 129, 0.35);
            color: #fff;
            transform: scale(1.08);
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text-white);
            position: relative;
            z-index: 1;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        /* ===== STATS ===== */
        #stats {
            background: var(--bg-card);
            position: relative;
            overflow: hidden;
        }

        #stats::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 25% 50%, rgba(124, 58, 237, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 75% 50%, rgba(16, 185, 129, 0.04) 0%, transparent 60%);
            pointer-events: none;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            z-index: 1;
        }

        .stat-item {
            text-align: center;
            padding: 24px 16px;
        }

        .stat-number {
            font-size: clamp(36px, 5vw, 52px);
            font-weight: 800;
            color: var(--accent-purple);
            line-height: 1;
            margin-bottom: 8px;
            text-shadow: 0 0 40px rgba(124, 58, 237, 0.4);
            letter-spacing: -1px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            letter-spacing: 1px;
            font-weight: 500;
        }

        /* ===== CASES ===== */
        #cases {
            background: var(--bg-deep);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .case-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            cursor: pointer;
            transition: var(--transition-smooth);
            border: 1px solid var(--border-subtle);
            aspect-ratio: 4 / 3;
            background: var(--bg-card);
        }

        .case-card:hover {
            transform: translateY(-8px);
            border-color: var(--border-glow);
            box-shadow: 0 12px 32px rgba(124, 58, 237, 0.3);
        }

        .case-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .case-card:hover img {
            transform: scale(1.06);
        }

        .case-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 15, 15, 0.9) 0%, rgba(15, 15, 15, 0.3) 50%, transparent 100%);
            z-index: 2;
            pointer-events: none;
        }

        .case-info {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 24px;
            z-index: 3;
            pointer-events: none;
        }

        .case-info h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
        }

        .case-info p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.5;
        }

        /* ===== SOLUTIONS ===== */
        #solutions {
            background: var(--bg-card);
            position: relative;
        }

        .solutions-flow {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 0;
            position: relative;
            z-index: 1;
            max-width: 960px;
            margin: 0 auto;
        }

        .solutions-flow::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: linear-gradient(to right, var(--accent-purple), var(--accent-green), var(--accent-purple));
            z-index: 0;
            opacity: 0.5;
            border-radius: 2px;
        }

        .solution-step {
            text-align: center;
            flex: 1;
            position: relative;
            z-index: 2;
            padding: 0 8px;
        }

        .solution-circle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 80px;
            height: 80px;
            border-radius: var(--radius-full);
            background: var(--bg-deep);
            border: 3px solid var(--accent-purple);
            margin: 0 auto 20px;
            font-size: 30px;
            color: var(--accent-green);
            transition: var(--transition-fast);
            position: relative;
            box-shadow: 0 0 0 8px rgba(124, 58, 237, 0.08);
        }

        .solution-step:hover .solution-circle {
            border-color: var(--accent-green);
            box-shadow: 0 0 0 16px rgba(16, 185, 129, 0.12), 0 0 32px rgba(16, 185, 129, 0.3);
            transform: scale(1.08);
        }

        .solution-step h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-white);
        }

        .solution-step p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        #faq {
            background: var(--bg-deep);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid rgba(124, 58, 237, 0.2);
        }

        .faq-item:first-child {
            border-top: 1px solid rgba(124, 58, 237, 0.2);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 17px;
            font-weight: 600;
            padding: 20px 0;
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-family: inherit;
            letter-spacing: 0.3px;
            transition: var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--accent-green);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: var(--radius-full);
            border: 2px solid rgba(124, 58, 237, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--accent-purple);
            transition: var(--transition-fast);
        }

        .faq-item.open .faq-icon {
            border-color: var(--accent-green);
            color: var(--accent-green);
            background: rgba(16, 185, 129, 0.1);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1), padding 0.45s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 0 0;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 0 24px;
        }

        .faq-answer-inner {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            padding-right: 20px;
        }

        /* ===== CTA ===== */
        #cta {
            background: linear-gradient(135deg, #7C3AED 0%, #10B981 80%);
            position: relative;
            overflow: hidden;
            text-align: center;
            padding: 80px 0;
        }

        #cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                repeating-linear-gradient(0deg, transparent, transparent 40px, rgba(255, 255, 255, 0.03) 40px, rgba(255, 255, 255, 0.03) 41px),
                repeating-linear-gradient(90deg, transparent, transparent 40px, rgba(255, 255, 255, 0.03) 40px, rgba(255, 255, 255, 0.03) 41px);
            pointer-events: none;
            z-index: 1;
        }

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

        #cta h2 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        #cta .cta-sub {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
            font-size: 16px;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 44px;
            border-radius: var(--radius-btn);
            background: rgba(0, 0, 0, 0.5);
            color: #fff;
            font-size: 17px;
            font-weight: 600;
            letter-spacing: 0.5px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition-fast);
            cursor: pointer;
        }

        .btn-cta:hover {
            background: rgba(0, 0, 0, 0.7);
            transform: scale(1.03);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            border-color: rgba(255, 255, 255, 0.5);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--bg-deep);
            padding: 48px 0 32px;
            position: relative;
            border-top: 2px solid var(--accent-purple);
        }

        .footer-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 24px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand .logo-text {
            font-size: 20px;
            font-weight: 700;
            background: linear-gradient(135deg, #FFFFFF 0%, #C4B5FD 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .footer-tagline {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .footer-social {
            display: flex;
            gap: 14px;
        }

        .social-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            border: 2px solid rgba(124, 58, 237, 0.4);
            color: var(--text-muted);
            font-size: 16px;
            transition: var(--transition-fast);
        }

        .social-icon:hover {
            border-color: var(--accent-green);
            background: var(--accent-green);
            color: var(--bg-deep);
            box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
            transform: translateY(-3px);
        }

        .footer-copyright {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            width: 100%;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid rgba(124, 58, 237, 0.15);
        }

        /* ===== DECORATIVE AMBIENT ===== */
        .ambient-glow {
            position: absolute;
            pointer-events: none;
            z-index: 0;
            border-radius: 50%;
            filter: blur(80px);
            opacity: 0.08;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .solutions-flow {
                flex-wrap: wrap;
                gap: 32px;
                justify-content: center;
            }
            .solutions-flow::before {
                display: none;
            }
            .solution-step {
                flex: 0 0 calc(50% - 20px);
                max-width: 220px;
            }
            .section {
                padding: 80px 0;
            }
            .nav-links {
                gap: 20px;
            }
            .nav-links a {
                font-size: 14px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .services-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cases-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .solutions-flow {
                flex-direction: column;
                align-items: center;
                gap: 28px;
            }
            .solution-step {
                flex: 1;
                max-width: 100%;
                display: flex;
                align-items: center;
                gap: 16px;
                text-align: left;
                width: 100%;
                max-width: 320px;
            }
            .solution-circle {
                width: 56px;
                height: 56px;
                font-size: 22px;
                flex-shrink: 0;
                margin-bottom: 0;
                box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.08);
            }
            .solution-step h4 {
                margin-bottom: 2px;
            }
            .section {
                padding: 60px 0;
            }
            .hero h1 {
                font-size: 36px;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
            .btn {
                width: 100%;
                justify-content: center;
                max-width: 300px;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
                gap: 16px;
            }
            .footer-brand {
                flex-direction: column;
                align-items: center;
            }
            .site-header {
                height: 60px;
            }
            html {
                scroll-padding-top: 60px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
            }
            .stat-number {
                font-size: 32px;
            }
            .stat-label {
                font-size: 12px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .section-title {
                font-size: 24px;
            }
            .service-card {
                padding: 24px 16px;
            }
            .case-card {
                aspect-ratio: 3 / 2;
            }
            #cta {
                padding: 56px 0;
            }
            #cta h2 {
                font-size: 24px;
            }
            .btn-cta {
                padding: 14px 28px;
                font-size: 15px;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
        }