/* roulang page: index */
:root {
            --color-primary: #FF5E13;
            --color-primary-hover: #E64A00;
            --color-primary-deep: #CC3F00;
            --color-dark: #1A1A1A;
            --color-dark-trans: rgba(26, 26, 26, 0.85);
            --color-bg: #F5F5F5;
            --color-white: #FFFFFF;
            --color-accent: #FFC107;
            --color-accent-light: #FFF3CD;
            --color-success: #00C48C;
            --color-success-light: #E6FAF5;
            --color-border: #E5E5E5;
            --color-text: #1A1A1A;
            --color-text-weak: #6B6B6B;
            --color-text-muted: #999999;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-full: 9999px;
            --shadow-card: 0px 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0px 8px 28px rgba(0, 0, 0, 0.08);
            --shadow-button: 0px 4px 16px rgba(255, 94, 19, 0.3);
            --shadow-nav: 0px 2px 24px rgba(0, 0, 0, 0.12);
            --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-mono: 'Inter', 'SF Mono', 'Fira Code', monospace;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --spacing-3xl: 120px;
            --max-width: 1200px;
            --nav-height: 72px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        *,
        *::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;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            font-weight: 400;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition-smooth);
        }

        button:focus-visible,
        a:focus-visible {
            outline: 3px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

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

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

        /* ========== NAVIGATION ========== */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth), backdrop-filter var(--transition-smooth);
            background: transparent;
        }

        .nav.scrolled {
            background: var(--color-dark-trans);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-nav);
        }

        .nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .nav-logo {
            font-family: var(--font-sans);
            font-weight: 900;
            font-size: 1.5rem;
            letter-spacing: -0.5px;
            color: var(--color-primary);
            white-space: nowrap;
            transition: color var(--transition-fast);
            position: relative;
            z-index: 1001;
        }

        .nav.scrolled .nav-logo {
            color: var(--color-primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
            list-style: none;
        }

        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.9);
            position: relative;
            padding: 6px 0;
            transition: color var(--transition-fast);
            letter-spacing: -0.2px;
        }

        .nav.scrolled .nav-links a {
            color: rgba(255, 255, 255, 0.85);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: width var(--transition-smooth);
        }

        .nav-links a:hover,
        .nav-links a:active {
            color: #FFFFFF;
        }

        .nav-links a:hover::after,
        .nav-links a:active::after {
            width: 100%;
        }

        .nav-links .nav-cta-link {
            background: var(--color-primary);
            color: #FFFFFF !important;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            transition: all var(--transition-smooth);
            letter-spacing: -0.2px;
        }

        .nav-links .nav-cta-link::after {
            display: none;
        }

        .nav-links .nav-cta-link:hover {
            background: var(--color-primary-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-button);
        }

        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            width: 36px;
            height: 36px;
            position: relative;
            z-index: 1001;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            cursor: pointer;
        }

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

        .nav.scrolled .nav-hamburger span {
            background: #FFFFFF;
        }

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

        .nav-mobile-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(26, 26, 26, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            z-index: 999;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: var(--spacing-lg);
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-smooth);
        }

        .nav-mobile-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .nav-mobile-overlay a {
            font-size: 1.4rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: -0.3px;
            transition: color var(--transition-fast);
        }

        .nav-mobile-overlay a:hover {
            color: var(--color-primary);
        }

        .nav-mobile-overlay .mobile-cta {
            background: var(--color-primary);
            color: #FFFFFF !important;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            margin-top: var(--spacing-sm);
            font-weight: 700;
            transition: all var(--transition-smooth);
        }

        .nav-mobile-overlay .mobile-cta:hover {
            background: var(--color-primary-hover);
            transform: scale(1.04);
            color: #FFFFFF !important;
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: var(--color-dark);
            overflow: hidden;
            padding-top: var(--nav-height);
        }

        .hero-bg-particles {
            position: absolute;
            inset: 0;
            pointer-events: none;
            z-index: 1;
        }

        .hero-speed-line {
            position: absolute;
            height: 1.5px;
            background: linear-gradient(90deg, transparent, rgba(255, 94, 19, 0.5), rgba(255, 193, 7, 0.4), transparent);
            border-radius: 2px;
            animation: speedLineMove 3s linear infinite;
            opacity: 0;
        }

        .hero-speed-line:nth-child(1) {
            top: 18%;
            left: -20%;
            width: 60%;
            animation-delay: 0s;
            animation-duration: 3.2s;
        }
        .hero-speed-line:nth-child(2) {
            top: 35%;
            left: -30%;
            width: 45%;
            animation-delay: 1.1s;
            animation-duration: 2.6s;
        }
        .hero-speed-line:nth-child(3) {
            top: 52%;
            left: -15%;
            width: 55%;
            animation-delay: 0.5s;
            animation-duration: 3.8s;
        }
        .hero-speed-line:nth-child(4) {
            top: 68%;
            left: -25%;
            width: 50%;
            animation-delay: 1.8s;
            animation-duration: 2.9s;
        }
        .hero-speed-line:nth-child(5) {
            top: 80%;
            left: -10%;
            width: 40%;
            animation-delay: 2.2s;
            animation-duration: 3.4s;
        }
        .hero-speed-line:nth-child(6) {
            top: 22%;
            left: -35%;
            width: 35%;
            animation-delay: 0.7s;
            animation-duration: 4.1s;
        }

        @keyframes speedLineMove {
            0% {
                transform: translateX(0);
                opacity: 0;
            }
            15% {
                opacity: 0.7;
            }
            40% {
                opacity: 0.9;
            }
            75% {
                opacity: 0.3;
            }
            100% {
                transform: translateX(calc(100vw + 60%));
                opacity: 0;
            }
        }

        .hero-glow {
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 94, 19, 0.18) 0%, transparent 70%);
            top: -15%;
            right: -8%;
            z-index: 0;
            animation: glowPulse 6s ease-in-out infinite;
            pointer-events: none;
        }

        @keyframes glowPulse {
            0%,
            100% {
                transform: scale(1);
                opacity: 0.6;
            }
            50% {
                transform: scale(1.25);
                opacity: 1;
            }
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }

        .hero-content {
            color: #FFFFFF;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(255, 94, 19, 0.2);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            letter-spacing: 0.5px;
            margin-bottom: var(--spacing-md);
            border: 1px solid rgba(255, 94, 19, 0.3);
        }

        .hero h1 {
            font-family: var(--font-sans);
            font-weight: 900;
            font-size: 3rem;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: var(--spacing-md);
            color: #FFFFFF;
        }

        .hero h1 .highlight {
            color: var(--color-primary);
            position: relative;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: var(--spacing-lg);
            max-width: 460px;
            letter-spacing: -0.2px;
        }

        .hero-buttons {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            letter-spacing: -0.3px;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            cursor: pointer;
            border: 2px solid transparent;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #FFFFFF;
            border-color: var(--color-primary);
            box-shadow: var(--shadow-button);
        }

        .btn-primary:hover {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            transform: translateY(-3px);
            box-shadow: 0px 8px 28px rgba(255, 94, 19, 0.4);
        }

        .btn-primary:active {
            transform: translateY(-1px);
            box-shadow: 0px 4px 14px rgba(255, 94, 19, 0.35);
            background: var(--color-primary-deep);
        }

        .btn-outline {
            background: transparent;
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.5);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #FFFFFF;
            transform: translateY(-3px);
            box-shadow: 0px 6px 20px rgba(255, 255, 255, 0.12);
        }

        .btn-outline:active {
            transform: translateY(-1px);
            background: rgba(255, 255, 255, 0.14);
        }

        .btn-lg {
            padding: 16px 40px;
            font-size: 1.1rem;
            border-radius: var(--radius-md);
        }

        .btn-white {
            background: #FFFFFF;
            color: var(--color-dark);
            border-color: #FFFFFF;
            font-weight: 700;
            box-shadow: 0px 4px 20px rgba(0, 0, 0, 0.12);
        }

        .btn-white:hover {
            background: #F0F0F0;
            border-color: #F0F0F0;
            transform: translateY(-3px);
            box-shadow: 0px 8px 32px rgba(0, 0, 0, 0.18);
            color: var(--color-dark);
        }

        .btn-white:active {
            transform: translateY(-1px);
            background: #E8E8E8;
        }

        .hero-image-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0px 20px 60px rgba(0, 0, 0, 0.35);
            aspect-ratio: 4/3;
            background: var(--color-dark);
        }

        .hero-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .hero-image-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.55) 0%, rgba(255, 94, 19, 0.35) 60%, rgba(255, 193, 7, 0.2) 100%);
            pointer-events: none;
        }

        /* ========== SECTION COMMONS ========== */
        .section {
            padding: var(--spacing-3xl) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-2xl);
        }

        .section-label {
            display: inline-block;
            font-weight: 700;
            font-size: 0.85rem;
            color: var(--color-primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: var(--spacing-xs);
        }

        .section-title {
            font-family: var(--font-sans);
            font-weight: 900;
            font-size: 2.25rem;
            letter-spacing: -0.5px;
            color: var(--color-dark);
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-weak);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ========== SOLUTION SECTION ========== */
        #solution {
            background: var(--color-white);
        }

        .solution-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .solution-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            padding: var(--spacing-lg);
            display: flex;
            gap: var(--spacing-md);
            align-items: flex-start;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .solution-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: #D0D0D0;
        }

        .solution-card-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, rgba(255, 94, 19, 0.12) 0%, rgba(255, 193, 7, 0.08) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--color-primary);
            transition: all var(--transition-smooth);
        }

        .solution-card:hover .solution-card-icon {
            background: var(--color-primary);
            color: #FFFFFF;
            transform: scale(1.08);
        }

        .solution-card-body {
            flex: 1;
            min-width: 0;
        }

        .solution-card-title {
            font-weight: 900;
            font-size: 1.15rem;
            color: var(--color-dark);
            margin-bottom: 6px;
            letter-spacing: -0.3px;
        }

        .solution-card-desc {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.6;
        }

        .solution-card-bar {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent), transparent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-smooth);
            border-radius: 0 0 var(--radius-md) var(--radius-md);
        }

        .solution-card:hover .solution-card-bar {
            transform: scaleX(1);
        }

        .solution-card-image {
            flex-shrink: 0;
            width: 100px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--color-bg);
        }

        .solution-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ========== RESULTS SECTION ========== */
        #results {
            background: var(--color-bg);
            text-align: center;
        }

        .results-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
            max-width: 900px;
            margin: 0 auto;
        }

        .result-item {
            padding: var(--spacing-lg) var(--spacing-md);
        }

        .result-number {
            font-family: var(--font-mono);
            font-weight: 900;
            font-size: 4rem;
            line-height: 1;
            letter-spacing: -2px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 70%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: var(--spacing-xs);
        }

        .result-label {
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-dark);
            letter-spacing: -0.2px;
        }

        .result-sublabel {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* ========== TESTIMONIALS SECTION ========== */
        #testimonials {
            background: var(--color-white);
            overflow: hidden;
        }

        .testimonials-scroll {
            display: flex;
            gap: var(--spacing-lg);
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            padding-bottom: var(--spacing-sm);
            scrollbar-width: thin;
            scrollbar-color: #CCC transparent;
        }

        .testimonials-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .testimonials-scroll::-webkit-scrollbar-track {
            background: transparent;
            border-radius: 3px;
        }
        .testimonials-scroll::-webkit-scrollbar-thumb {
            background: #CCC;
            border-radius: 3px;
        }

        .testimonial-card {
            flex: 0 0 400px;
            scroll-snap-align: start;
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            padding: var(--spacing-lg);
            position: relative;
            transition: all var(--transition-smooth);
            min-width: 320px;
        }

        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .testimonial-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: var(--spacing-lg);
            bottom: var(--spacing-lg);
            width: 4px;
            background: var(--color-primary);
            border-radius: 0 3px 3px 0;
        }

        .testimonial-quote {
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            margin-bottom: var(--spacing-md);
            font-style: italic;
            letter-spacing: -0.2px;
            padding-left: var(--spacing-sm);
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding-left: var(--spacing-sm);
        }

        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 900;
            font-size: 1rem;
        }

        .testimonial-name {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--color-dark);
            letter-spacing: -0.2px;
        }

        .testimonial-role {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        /* ========== CTA SECTION ========== */
        #cta {
            background: linear-gradient(135deg, var(--color-primary) 0%, #E64A00 30%, var(--color-dark) 100%);
            text-align: center;
            padding: var(--spacing-3xl) 0;
            position: relative;
            overflow: hidden;
        }

        #cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(255, 255, 255, 0.06) 0%, transparent 60%);
            pointer-events: none;
        }

        #cta .container {
            position: relative;
            z-index: 1;
        }

        .cta-title {
            font-family: var(--font-sans);
            font-weight: 900;
            font-size: 2.5rem;
            color: #FFFFFF;
            letter-spacing: -0.5px;
            margin-bottom: var(--spacing-sm);
        }

        .cta-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: var(--spacing-lg);
        }

        .cta-trust {
            display: flex;
            justify-content: center;
            gap: var(--spacing-lg);
            margin-top: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .cta-trust-badge {
            width: 90px;
            height: 50px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 0.5px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

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

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

        .faq-item {
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-fast);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 0;
            text-align: left;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--spacing-sm);
            cursor: pointer;
            letter-spacing: -0.2px;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-smooth);
            font-size: 1.1rem;
            color: var(--color-text-weak);
        }

        .faq-item.active .faq-icon {
            background: var(--color-primary);
            color: #FFFFFF;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 0;
            color: var(--color-text-weak);
            font-size: 0.95rem;
            line-height: 1.7;
        }

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

        /* ========== FOOTER ========== */
        .footer {
            background: var(--color-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-2xl) 0 var(--spacing-md);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }

        .footer-brand-name {
            font-weight: 900;
            font-size: 1.3rem;
            color: var(--color-primary);
            letter-spacing: -0.5px;
            margin-bottom: var(--spacing-xs);
        }

        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-col-title {
            font-weight: 700;
            font-size: 0.9rem;
            color: #FFFFFF;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.3px;
            text-transform: uppercase;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--color-primary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: var(--spacing-md);
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: -0.1px;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --spacing-3xl: 80px;
                --spacing-2xl: 60px;
                --spacing-xl: 40px;
            }

            .hero .container {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
                text-align: center;
            }

            .hero h1 {
                font-size: 2.4rem;
            }

            .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }

            .hero-buttons {
                justify-content: center;
            }

            .hero-image-wrap {
                max-width: 500px;
                margin: 0 auto;
                aspect-ratio: 16/9;
            }

            .solution-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .results-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: var(--spacing-md);
            }

            .result-number {
                font-size: 3rem;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
                --spacing-3xl: 60px;
                --spacing-2xl: 44px;
                --spacing-xl: 32px;
                --spacing-lg: 24px;
                --spacing-md: 18px;
            }

            .nav-links {
                display: none;
            }

            .nav-hamburger {
                display: flex;
            }

            .nav-mobile-overlay {
                display: flex;
            }

            .hero {
                min-height: 70vh;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .hero-subtitle {
                font-size: 1rem;
            }

            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 14px 30px;
                font-size: 1rem;
            }

            .hero-image-wrap {
                max-width: 100%;
                aspect-ratio: 16/10;
            }

            .solution-grid {
                grid-template-columns: 1fr;
            }

            .solution-card {
                flex-direction: column;
                align-items: flex-start;
            }

            .solution-card-image {
                width: 100%;
                height: 120px;
                order: -1;
            }

            .results-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .result-number {
                font-size: 2.8rem;
            }

            .testimonial-card {
                flex: 0 0 85vw;
                min-width: 260px;
            }

            .section-title {
                font-size: 1.7rem;
            }

            .cta-title {
                font-size: 1.8rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
                text-align: center;
            }

            .footer-links {
                align-items: center;
            }

            .faq-question {
                font-size: 0.95rem;
                padding: 16px 0;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.6rem;
                letter-spacing: -0.5px;
            }

            .hero-subtitle {
                font-size: 0.9rem;
            }

            .btn {
                padding: 10px 20px;
                font-size: 0.85rem;
                border-radius: 6px;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.9rem;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .cta-title {
                font-size: 1.5rem;
            }

            .testimonial-card {
                flex: 0 0 88vw;
                min-width: 240px;
                padding: var(--spacing-md);
            }

            .hero-image-wrap {
                aspect-ratio: 4/3;
            }

            .hero-speed-line {
                display: none;
            }
            .hero-speed-line:nth-child(1),
            .hero-speed-line:nth-child(3) {
                display: block;
            }

            .solution-card-image {
                height: 90px;
            }

            .result-number {
                font-size: 2.4rem;
            }
        }