/* roulang page: index */
:root {
            --primary: #FF4D2E;
            --primary-rgb: 255, 77, 46;
            --secondary: #7B2FF7;
            --secondary-rgb: 123, 47, 247;
            --gradient-brand: linear-gradient(135deg, #FF4D2E 0%, #D92FD0 50%, #7B2FF7 100%);
            --gradient-brand-reverse: linear-gradient(135deg, #7B2FF7 0%, #D92FD0 50%, #FF4D2E 100%);
            --bg-page: #F9FAFB;
            --bg-white: #FFFFFF;
            --bg-dark: #1E1E2F;
            --bg-stats: #EEF0F4;
            --text-primary: #1E1E2F;
            --text-body: #3A3A4A;
            --text-muted: #6B7280;
            --text-light: #9CA3AF;
            --text-white: #FFFFFF;
            --border-light: #E5E7EB;
            --border-card: #EDEDF2;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 12px 32px rgba(255, 77, 46, 0.12);
            --shadow-nav: 0 1px 8px rgba(0, 0, 0, 0.04);
            --shadow-glow: 0 0 40px rgba(255, 77, 46, 0.18);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --font-heading: -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --font-body: -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --font-number: 'Inter', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.35s ease;
            --max-width: 1200px;
            --nav-height: 64px;
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.65;
            color: var(--text-body);
            background-color: var(--bg-page);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        .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(--bg-white);
            box-shadow: var(--shadow-nav);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }
        .nav.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
        }
        .nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient-brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            flex-shrink: 0;
        }
        .nav-logo .logo-text {
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-size: 1.3rem;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--gradient-brand);
            transition: width var(--transition-normal);
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--secondary);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: var(--radius-full);
            background: var(--gradient-brand);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-normal);
            box-shadow: 0 4px 14px rgba(255, 77, 46, 0.3);
        }
        .nav-cta:hover {
            transform: scale(1.04);
            box-shadow: 0 6px 22px rgba(255, 77, 46, 0.45);
            background: var(--gradient-brand-reverse);
            color: #fff;
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 28px;
            height: 22px;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            z-index: 1100;
            background: none;
            border: none;
            padding: 4px;
            aria-label: 菜单;
        }
        .nav-hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            border-radius: 3px;
            background: var(--text-primary);
            transition: all var(--transition-normal);
            transform-origin: center;
        }
        .nav-hamburger.open span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .nav-hamburger.open span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .nav-hamburger.open span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .nav-mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 32px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-normal);
        }
        .nav-mobile-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }
        .nav-mobile-overlay a {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-primary);
            transition: color var(--transition-fast);
        }
        .nav-mobile-overlay a:hover {
            color: var(--secondary);
        }
        .nav-mobile-overlay .mobile-cta {
            padding: 14px 40px;
            border-radius: var(--radius-full);
            background: var(--gradient-brand);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            width: 80%;
            text-align: center;
            box-shadow: 0 6px 20px rgba(255, 77, 46, 0.35);
        }

        /* ========== HERO ========== */
        .hero {
            padding-top: calc(var(--nav-height) + 40px);
            padding-bottom: 60px;
            background: radial-gradient(ellipse at 30% 20%, rgba(255, 77, 46, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 60%, rgba(123, 47, 247, 0.05) 0%, transparent 55%),
                var(--bg-page);
            min-height: 85vh;
            display: flex;
            align-items: center;
        }
        .hero .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-content {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 77, 46, 0.08);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            width: fit-content;
            letter-spacing: 0.3px;
        }
        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            animation: pulse-dot 1.8s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 77, 46, 0.6);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(255, 77, 46, 0);
            }
        }
        .hero h1 {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.25;
            letter-spacing: -0.3px;
        }
        .hero h1 .highlight {
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 440px;
        }
        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 4px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-normal);
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--gradient-brand);
            color: #fff;
            box-shadow: 0 6px 22px rgba(255, 77, 46, 0.3);
        }
        .btn-primary:hover {
            transform: scale(1.03);
            box-shadow: 0 10px 30px rgba(255, 77, 46, 0.45);
            background: var(--gradient-brand-reverse);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid transparent;
            border-image: var(--gradient-brand) 1;
            border-radius: var(--radius-full);
            position: relative;
            z-index: 1;
        }
        .btn-outline::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-full);
            padding: 1.5px;
            background: var(--gradient-brand);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            z-index: -1;
        }
        .btn-outline:hover {
            background: rgba(255, 77, 46, 0.06);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        .hero-phone-frame {
            width: 280px;
            height: 520px;
            border-radius: 32px;
            background: #fff;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.12), 0 0 0 3px #1E1E2F;
            overflow: hidden;
            position: relative;
            z-index: 2;
            animation: float-phone 5s ease-in-out infinite;
        }
        @keyframes float-phone {
            0%,
            100% {
                transform: translateY(0px);
            }
            25% {
                transform: translateY(-10px);
            }
            75% {
                transform: translateY(6px);
            }
        }
        .hero-phone-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 30px;
        }
        .hero-glow-orb {
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: var(--gradient-brand);
            filter: blur(90px);
            opacity: 0.25;
            z-index: 1;
            pointer-events: none;
        }
        .hero-glow-orb.orb-1 {
            top: -40px;
            right: -20px;
        }
        .hero-glow-orb.orb-2 {
            bottom: -50px;
            left: 0px;
            background: rgba(123, 47, 247, 0.5);
            width: 160px;
            height: 160px;
            filter: blur(80px);
        }

        /* ========== SECTION COMMONS ========== */
        .section {
            padding: 72px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .section-header .subtitle-en {
            font-family: var(--font-number);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-light);
            text-transform: uppercase;
            letter-spacing: 2px;
            display: block;
            margin-bottom: 6px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto;
        }

        /* ========== FEATURES ========== */
        #features {
            background: var(--bg-white);
            border-radius: var(--radius-xl) var(--radius-xl) 0 0;
            margin-top: -20px;
            position: relative;
            z-index: 3;
            padding-top: 80px;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1.5px solid transparent;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            padding: 1.5px;
            background: var(--gradient-brand);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            opacity: 0;
            transition: opacity var(--transition-normal);
            z-index: 0;
            pointer-events: none;
        }
        .feature-card:hover {
            transform: translateY(-4px) translateX(2px);
            box-shadow: var(--shadow-card-hover);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(255, 77, 46, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.6rem;
            position: relative;
            z-index: 1;
            transition: background var(--transition-normal);
        }
        .feature-card:hover .feature-icon {
            background: rgba(255, 77, 46, 0.15);
        }
        .feature-card h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            position: relative;
            z-index: 1;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
            position: relative;
            z-index: 1;
        }

        /* ========== SERVICES ========== */
        #services {
            background: var(--bg-page);
        }
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1.5px solid var(--border-card);
            position: relative;
        }
        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: transparent;
        }
        .service-card::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            padding: 1.5px;
            background: var(--gradient-brand);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            opacity: 0;
            transition: opacity var(--transition-normal);
            z-index: 1;
            pointer-events: none;
        }
        .service-card:hover::before {
            opacity: 1;
        }
        .service-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .service-card-body {
            padding: 20px 22px;
            position: relative;
            z-index: 2;
        }
        .service-card-body h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .service-card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .service-card-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            background: rgba(123, 47, 247, 0.08);
            color: var(--secondary);
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 8px;
            position: relative;
            z-index: 2;
        }

        /* ========== STATS ========== */
        #stats {
            background: var(--bg-stats);
            position: relative;
            overflow: hidden;
        }
        #stats .stats-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
            pointer-events: none;
        }
        #stats .container {
            position: relative;
            z-index: 2;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            position: relative;
            transition: all var(--transition-normal);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .stat-number {
            font-family: var(--font-number);
            font-size: 2.5rem;
            font-weight: 800;
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: block;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .stat-glow {
            position: absolute;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: rgba(255, 77, 46, 0.08);
            filter: blur(30px);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            pointer-events: none;
            z-index: 0;
        }

        /* ========== CASES ========== */
        #cases {
            background: var(--bg-white);
        }
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .case-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1.5px solid var(--border-card);
            position: relative;
        }
        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: transparent;
        }
        .case-card::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            padding: 1.5px;
            background: var(--gradient-brand);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            opacity: 0;
            transition: opacity var(--transition-normal);
            z-index: 2;
            pointer-events: none;
        }
        .case-card:hover::before {
            opacity: 1;
        }
        .case-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .case-card-body {
            padding: 18px 20px;
        }
        .case-card-body h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .case-card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ========== PROCESS ========== */
        #process {
            background: var(--bg-page);
        }
        .process-steps {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            position: relative;
            gap: 16px;
            flex-wrap: wrap;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 12%;
            right: 12%;
            height: 3px;
            background: var(--gradient-brand);
            border-radius: 4px;
            z-index: 0;
            opacity: 0.5;
        }
        .process-step {
            flex: 1;
            min-width: 180px;
            text-align: center;
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 14px;
        }
        .process-step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--gradient-brand);
            color: #fff;
            font-weight: 800;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 20px rgba(255, 77, 46, 0.3);
            flex-shrink: 0;
        }
        .process-step h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            max-width: 200px;
        }

        /* ========== FAQ ========== */
        #faq {
            background: var(--bg-white);
            border-radius: 0 0 var(--radius-xl) var(--radius-xl);
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-item {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition-fast);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            transition: background var(--transition-fast);
            text-align: left;
            gap: 12px;
            background: none;
            border: none;
            font-family: var(--font-body);
            line-height: 1.4;
        }
        .faq-question:hover {
            background: rgba(255, 77, 46, 0.03);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 77, 46, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
            transition: all var(--transition-normal);
        }
        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 22px 18px 22px;
        }
        .faq-item.open .faq-question {
            background: rgba(255, 77, 46, 0.02);
        }

        /* ========== CTA ========== */
        #cta {
            padding: 60px 0;
            background: none;
        }
        .cta-card {
            background: var(--gradient-brand);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(255, 77, 46, 0.3);
        }
        .cta-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 0;
            pointer-events: none;
            border-radius: var(--radius-xl);
        }
        .cta-card>* {
            position: relative;
            z-index: 2;
        }
        .cta-card h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-card p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1rem;
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: var(--radius-full);
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 1rem;
            border: 2px solid transparent;
            transition: all var(--transition-normal);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .btn-cta-white:hover {
            background: rgba(255, 255, 255, 0.9);
            transform: scale(1.04);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
            color: var(--secondary);
        }

        /* ========== FOOTER ========== */
        #footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1rem;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col p,
        .footer-col a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            display: block;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 8px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            transition: all var(--transition-fast);
        }
        .footer-social a:hover {
            background: var(--gradient-brand);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom strong {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero .container {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero h1 {
                font-size: 2.1rem;
            }
            .hero-phone-frame {
                width: 220px;
                height: 420px;
                border-radius: 26px;
            }
            .hero-phone-frame img {
                border-radius: 24px;
            }
            .process-steps::before {
                left: 8%;
                right: 8%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav .nav-cta {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-mobile-overlay {
                display: flex;
            }
            .hero .container {
                grid-template-columns: 1fr;
                gap: 28px;
                text-align: center;
            }
            .hero-content {
                align-items: center;
            }
            .hero-badge {
                margin: 0 auto;
            }
            .hero-subtitle {
                max-width: 100%;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero h1 {
                font-size: 1.75rem;
            }
            .hero-visual {
                order: -1;
            }
            .hero-phone-frame {
                width: 200px;
                height: 360px;
                border-radius: 24px;
            }
            .hero-phone-frame img {
                border-radius: 22px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                flex-direction: column;
                align-items: center;
                gap: 28px;
            }
            .process-steps::before {
                display: none;
            }
            .process-step {
                flex-direction: row;
                gap: 16px;
                text-align: left;
                width: 100%;
                max-width: 360px;
            }
            .process-step p {
                max-width: 100%;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                text-align: center;
            }
            .footer-social {
                justify-content: center;
            }
            .cta-card {
                padding: 40px 20px;
            }
            .cta-card h2 {
                font-size: 1.5rem;
            }
            .btn {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
            .nav-logo .logo-text {
                font-size: 1.1rem;
            }
            .stat-number {
                font-size: 2rem;
            }
            #features {
                padding-top: 60px;
            }
            .section {
                padding: 48px 0;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.45rem;
            }
            .hero-phone-frame {
                width: 170px;
                height: 310px;
                border-radius: 20px;
            }
            .hero-phone-frame img {
                border-radius: 18px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .hero-buttons {
                flex-direction: column;
                width: 100%;
            }
            .hero-buttons .btn {
                width: 100%;
                justify-content: center;
            }
            .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .container {
                padding: 0 16px;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .feature-card {
                padding: 22px 16px;
            }
            .service-card-img {
                height: 140px;
            }
            .case-card img {
                height: 160px;
            }
            .cta-card h2 {
                font-size: 1.3rem;
            }
            .nav-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 1rem;
                border-radius: 8px;
            }
            .nav-logo .logo-text {
                font-size: 1rem;
            }
            .nav {
                height: 56px;
            }
            :root {
                --nav-height: 56px;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 15px 16px;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.82rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 15px 16px;
            }
        }