/* roulang page: index */
:root {
            --color-primary: #e63946;
            --color-primary-hover: #c62835;
            --color-primary-light: #ff5a65;
            --color-accent: #f0c040;
            --color-accent-hover: #d4a82e;
            --color-bg-dark: #0a0e17;
            --color-bg-card: #111620;
            --color-bg-card-alt: #161c28;
            --color-bg-surface: #1a2030;
            --color-bg-hero-overlay: rgba(6, 10, 18, 0.82);
            --color-text-primary: #f0f2f5;
            --color-text-secondary: #b8bfcc;
            --color-text-muted: #7a8294;
            --color-text-white: #ffffff;
            --color-border: #1e2636;
            --color-border-light: #2a3347;
            --color-green: #2ecc71;
            --color-green-glow: rgba(46, 204, 113, 0.35);
            --color-red-glow: rgba(230, 57, 70, 0.4);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 9999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow-red: 0 0 30px rgba(230, 57, 70, 0.25);
            --shadow-glow-gold: 0 0 24px rgba(240, 192, 64, 0.2);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', system-ui, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --max-width: 1240px;
            --header-height: 68px;
            --section-gap: 90px;
            --section-gap-mobile: 56px;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg-dark);
            color: var(--color-text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            font-size: 16px;
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }

        /* ========== HEADER / NAV ========== */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
            transition: background var(--transition-base), box-shadow var(--transition-base);
            height: var(--header-height);
        }

        header.scrolled {
            background: rgba(10, 14, 23, 0.96);
            box-shadow: var(--shadow-md);
            border-bottom-color: var(--color-border-light);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--color-text-white);
            letter-spacing: -0.02em;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary), #c0392b);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            flex-shrink: 0;
        }

        .logo:hover {
            color: var(--color-accent);
        }

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

        nav a.nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        nav a.nav-link:hover,
        nav a.nav-link:focus-visible {
            color: var(--color-text-white);
            background: rgba(255, 255, 255, 0.06);
        }

        nav a.nav-link.nav-cta {
            background: var(--color-primary);
            color: #fff;
            padding: 9px 20px;
            margin-left: 8px;
            font-weight: 700;
            box-shadow: var(--shadow-glow-red);
            transition: all var(--transition-base);
        }

        nav a.nav-link.nav-cta:hover {
            background: var(--color-primary-hover);
            box-shadow: 0 0 36px rgba(230, 57, 70, 0.45);
            transform: translateY(-1px);
            color: #fff;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            padding: 8px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            z-index: 1001;
            transition: background var(--transition-fast);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--color-text-primary);
            border-radius: 3px;
            transition: all var(--transition-base);
            transform-origin: center;
        }

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

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

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center 30%;
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--color-bg-hero-overlay);
            background: linear-gradient(180deg,
                    rgba(6, 10, 18, 0.78) 0%,
                    rgba(10, 14, 23, 0.84) 40%,
                    rgba(10, 14, 23, 0.94) 80%,
                    var(--color-bg-dark) 100%);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 192, 64, 0.13);
            border: 1px solid rgba(240, 192, 64, 0.3);
            padding: 7px 18px;
            border-radius: var(--radius-full);
            font-size: 0.88rem;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: 0.03em;
            margin-bottom: 22px;
            animation: fadeInUp 0.7s ease forwards;
        }

        .hero-badge .live-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--color-green);
            box-shadow: 0 0 10px var(--color-green-glow);
            animation: pulse-dot 1.6s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 8px var(--color-green-glow);
            }
            50% {
                box-shadow: 0 0 22px rgba(46, 204, 113, 0.7);
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero h1 {
            font-family: var(--font-display);
            font-size: clamp(2.6rem, 5.5vw, 4.2rem);
            font-weight: 900;
            color: var(--color-text-white);
            line-height: 1.18;
            letter-spacing: -0.025em;
            margin-bottom: 20px;
            animation: fadeInUp 0.7s ease 0.1s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }

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

        .hero h1 .highlight::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            width: 100%;
            height: 8px;
            background: rgba(230, 57, 70, 0.3);
            border-radius: 4px;
            z-index: -1;
        }

        .hero p.hero-subtitle {
            font-size: clamp(1.05rem, 1.8vw, 1.25rem);
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.65;
            animation: fadeInUp 0.7s ease 0.2s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            animation: fadeInUp 0.7s ease 0.3s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.01em;
            transition: all var(--transition-base);
            white-space: nowrap;
            cursor: pointer;
            text-align: center;
            justify-content: center;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: var(--shadow-glow-red);
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            box-shadow: 0 0 40px rgba(230, 57, 70, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline {
            background: transparent;
            color: var(--color-text-primary);
            border: 2px solid var(--color-border-light);
        }
        .btn-outline:hover {
            border-color: var(--color-text-primary);
            background: rgba(255, 255, 255, 0.04);
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #1a1a1a;
            box-shadow: var(--shadow-glow-gold);
            font-weight: 800;
        }
        .btn-accent:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 0 36px rgba(240, 192, 64, 0.4);
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.08rem;
        }

        /* ========== SECTION COMMON ========== */
        section {
            padding: var(--section-gap) 0;
        }

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

        .section-tag {
            display: inline-block;
            font-weight: 700;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-primary-light);
            margin-bottom: 10px;
        }

        .section-title {
            font-family: var(--font-display);
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            color: var(--color-text-white);
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            max-width: 580px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ========== FEATURES ========== */
        #features {
            background: var(--color-bg-dark);
            position: relative;
        }

        #features::before {
            content: '';
            position: absolute;
            top: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 1px;
            height: 60px;
            background: linear-gradient(to bottom, transparent, var(--color-border-light));
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .feature-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 26px 28px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

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

        .feature-card:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            background: var(--color-bg-card-alt);
        }
        .feature-card:hover::before {
            opacity: 1;
            width: 70px;
        }

        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-md);
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            background: linear-gradient(135deg, rgba(230, 57, 70, 0.25), rgba(192, 57, 43, 0.18));
            border: 1px solid rgba(230, 57, 70, 0.25);
            transition: all var(--transition-base);
        }

        .feature-card:hover .feature-icon {
            background: linear-gradient(135deg, var(--color-primary), #c0392b);
            border-color: transparent;
            box-shadow: var(--shadow-glow-red);
        }

        .feature-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--color-text-white);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.55;
        }

        /* ========== SERVICES ========== */
        #services {
            background: var(--color-bg-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .services-list {
            display: flex;
            flex-direction: column;
            gap: 36px;
        }

        .service-row {
            display: flex;
            align-items: center;
            gap: 48px;
            background: var(--color-bg-surface);
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
        }

        .service-row:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-md);
        }

        .service-row.reverse {
            flex-direction: row-reverse;
        }

        .service-image {
            flex: 0 0 44%;
            min-height: 320px;
            position: relative;
            overflow: hidden;
        }

        .service-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

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

        .service-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(26, 32, 48, 0.7) 0%, transparent 30%, transparent 70%, rgba(26, 32, 48, 0.7) 100%);
            pointer-events: none;
        }

        .service-row.reverse .service-image::after {
            background: linear-gradient(270deg, rgba(26, 32, 48, 0.7) 0%, transparent 30%, transparent 70%, rgba(26, 32, 48, 0.7) 100%);
        }

        .service-content {
            flex: 1;
            padding: 32px 36px 32px 12px;
        }

        .service-row.reverse .service-content {
            padding: 32px 12px 32px 36px;
        }

        .service-content .service-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--color-accent);
            background: rgba(240, 192, 64, 0.1);
            padding: 4px 12px;
            border-radius: var(--radius-full);
            margin-bottom: 10px;
            letter-spacing: 0.04em;
        }

        .service-content h3 {
            font-family: var(--font-display);
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-text-white);
            margin-bottom: 8px;
            letter-spacing: -0.015em;
            line-height: 1.3;
        }

        .service-content p {
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .service-content .btn {
            font-size: 0.9rem;
            padding: 10px 22px;
        }

        /* ========== STATS ========== */
        #stats {
            background: var(--color-bg-dark);
            position: relative;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .stat-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 30px 22px;
            text-align: center;
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-glow-red);
            transform: translateY(-3px);
        }

        .stat-number {
            font-family: var(--font-display);
            font-size: 3rem;
            font-weight: 900;
            color: var(--color-text-white);
            letter-spacing: -0.03em;
            line-height: 1;
            margin-bottom: 6px;
        }

        .stat-number .plus {
            color: var(--color-primary-light);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        /* ========== CONTENT CARDS ========== */
        #highlights {
            background: var(--color-bg-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .content-card:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
        }

        .content-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            position: relative;
        }

        .content-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

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

        .content-card .card-img .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-primary);
            color: #fff;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            z-index: 2;
        }

        .content-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .content-card .card-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text-white);
            margin-bottom: 6px;
            line-height: 1.35;
            letter-spacing: -0.01em;
        }

        .content-card .card-body p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.5;
            flex: 1;
        }

        .content-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 12px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        .content-card .card-body .card-meta i {
            color: var(--color-primary-light);
            font-size: 0.7rem;
            margin-right: 4px;
        }

        /* ========== HOW IT WORKS ========== */
        #how-it-works {
            background: var(--color-bg-dark);
        }

        .steps-list {
            display: flex;
            gap: 20px;
            counter-reset: step;
            flex-wrap: wrap;
            justify-content: center;
        }

        .step-item {
            flex: 0 1 240px;
            text-align: center;
            position: relative;
            counter-increment: step;
            padding: 0 10px;
        }

        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-bg-card);
            border: 2px solid var(--color-border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-weight: 900;
            font-size: 1.3rem;
            color: var(--color-text-white);
            transition: all var(--transition-base);
            position: relative;
            z-index: 1;
        }

        .step-item:hover .step-number {
            background: var(--color-primary);
            border-color: var(--color-primary);
            box-shadow: var(--shadow-glow-red);
            color: #fff;
        }

        .step-item h4 {
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text-white);
            margin-bottom: 4px;
        }

        .step-item p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.5;
        }

        .step-connector {
            display: none;
        }

        @media (min-width: 769px) {
            .step-connector {
                display: block;
                position: absolute;
                top: 28px;
                right: -50%;
                width: 100%;
                height: 2px;
                background: var(--color-border-light);
                z-index: 0;
                transform: translateX(50%);
            }
            .step-item:last-child .step-connector {
                display: none;
            }
        }

        /* ========== FAQ ========== */
        #faq {
            background: var(--color-bg-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

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

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

        .faq-item:hover {
            border-color: var(--color-border-light);
        }
        .faq-item.open {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-glow-red);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            background: none;
            color: var(--color-text-white);
            font-weight: 700;
            font-size: 1rem;
            text-align: left;
            cursor: pointer;
            gap: 14px;
            letter-spacing: -0.005em;
            transition: color var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            transition: all var(--transition-base);
            color: var(--color-text-muted);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            line-height: 1.65;
        }

        /* ========== CTA ========== */
        #contact {
            background: var(--color-bg-dark);
            position: relative;
            overflow: hidden;
        }

        #contact::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        #contact::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -100px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(240, 192, 64, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-box {
            position: relative;
            z-index: 1;
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-xl);
            padding: 48px 36px;
            box-shadow: var(--shadow-lg);
        }

        .cta-box h2 {
            font-family: var(--font-display);
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: var(--color-text-white);
            letter-spacing: -0.02em;
            margin-bottom: 10px;
        }

        .cta-box p {
            color: var(--color-text-secondary);
            font-size: 1.02rem;
            margin-bottom: 28px;
            line-height: 1.6;
        }

        .cta-box .btn {
            font-size: 1.05rem;
            padding: 15px 34px;
        }

        /* ========== FOOTER ========== */
        footer {
            background: var(--color-bg-card);
            border-top: 1px solid var(--color-border);
            padding: 36px 0;
            text-align: center;
        }

        footer .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
        }

        footer .footer-logo {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--color-text-white);
            letter-spacing: -0.01em;
        }

        footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            font-size: 0.88rem;
        }

        footer .footer-links a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
            font-weight: 500;
        }

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

        footer .footer-copy {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            line-height: 1.5;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .service-row {
                flex-direction: column;
                gap: 0;
            }
            .service-row.reverse {
                flex-direction: column;
            }
            .service-image {
                flex: 0 0 auto;
                width: 100%;
                min-height: 240px;
                max-height: 300px;
            }
            .service-content {
                padding: 24px 28px 28px !important;
            }
            .service-image::after {
                background: linear-gradient(180deg, rgba(26, 32, 48, 0.5) 0%, transparent 30%, transparent 70%, rgba(26, 32, 48, 0.8) 100%);
            }
            .service-row.reverse .service-image::after {
                background: linear-gradient(180deg, rgba(26, 32, 48, 0.5) 0%, transparent 30%, transparent 70%, rgba(26, 32, 48, 0.8) 100%);
            }
            :root {
                --section-gap: 64px;
            }
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: rgba(10, 14, 23, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 28px 28px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border-light);
                transform: translateY(-110%);
                transition: transform var(--transition-base);
                z-index: 999;
                box-shadow: var(--shadow-lg);
            }
            nav.open {
                transform: translateY(0);
            }
            nav a.nav-link {
                width: 100%;
                padding: 13px 18px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
                justify-content: flex-start;
            }
            nav a.nav-link.nav-cta {
                margin-left: 0;
                margin-top: 8px;
                justify-content: center;
                font-size: 1rem;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 16px;
                max-width: 440px;
                margin: 0 auto;
            }
            .steps-list {
                flex-direction: column;
                align-items: center;
                gap: 24px;
            }
            .step-item {
                flex: 0 1 auto;
                max-width: 320px;
            }
            .step-connector {
                display: none !important;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p.hero-subtitle {
                font-size: 0.95rem;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .cta-box {
                padding: 32px 20px;
            }
            :root {
                --section-gap: 48px;
                --header-height: 60px;
            }
            section {
                padding: var(--section-gap) 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .service-image {
                min-height: 200px;
                max-height: 240px;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 12px;
                max-width: 380px;
                margin: 0 auto;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
                gap: 10px;
            }
            .hero-buttons .btn {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
            .hero h1 {
                font-size: 1.65rem;
            }
            .hero p.hero-subtitle {
                font-size: 0.88rem;
            }
            .hero-badge {
                font-size: 0.78rem;
                padding: 5px 14px;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .section-desc {
                font-size: 0.9rem;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .btn {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 14px 26px;
                font-size: 0.95rem;
            }
            .feature-card {
                padding: 22px 16px 20px;
            }
            .content-card .card-body {
                padding: 14px 16px 16px;
            }
            .cta-box {
                padding: 26px 16px;
                border-radius: var(--radius-lg);
            }
            footer .footer-links {
                gap: 12px;
                font-size: 0.8rem;
            }
        }