/* roulang page: index */
:root {
            --primary: #1B6EF3;
            --primary-dark: #1558C7;
            --primary-light: #E8F1FE;
            --accent: #FF6B35;
            --accent-dark: #E55A2B;
            --accent-light: #FFF3EE;
            --bg: #F8FAFD;
            --card-bg: #FFFFFF;
            --dark-bg: #1A2238;
            --text-primary: #1E2A3A;
            --text-secondary: #5F6C80;
            --text-white: #FFFFFF;
            --success: #10B981;
            --success-light: #ECFDF5;
            --border: #E5E9F0;
            --border-light: #F0F3F8;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-full: 30px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, -apple-system, sans-serif;
            font-size: 16px;
            font-weight: 400;
            line-height: 1.6;
            color: var(--text-primary);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

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

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== NAVIGATION ========== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(229, 233, 240, 0.6);
            transition: box-shadow var(--transition), background var(--transition);
        }

        .header.scrolled {
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
            background: rgba(255, 255, 255, 0.94);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            z-index: 1001;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: color var(--transition), background var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transition: transform var(--transition);
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
        }

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

        .nav-cta-btn {
            display: inline-block;
            padding: 10px 22px !important;
            background: var(--accent) !important;
            color: #fff !important;
            border-radius: var(--radius-full) !important;
            font-weight: 600 !important;
            font-size: 14px !important;
            transition: background var(--transition), box-shadow var(--transition) !important;
            box-shadow: 0 2px 10px rgba(255, 107, 53, 0.3);
        }

        .nav-cta-btn:hover {
            background: var(--accent-dark) !important;
            box-shadow: 0 4px 18px rgba(255, 107, 53, 0.4) !important;
        }

        .nav-cta-btn::after {
            display: none !important;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            z-index: 1001;
            padding: 8px;
            border-radius: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }

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

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 16px;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                opacity: 0;
                pointer-events: none;
                transform: translateY(-10px);
                transition: opacity var(--transition), transform var(--transition);
                z-index: 1000;
            }

            .nav-links.open {
                opacity: 1;
                pointer-events: auto;
                transform: translateY(0);
            }

            .nav-links a {
                font-size: 20px;
                padding: 14px 28px;
                font-weight: 600;
            }

            .nav-links a::after {
                bottom: 8px;
                left: 28px;
                right: 28px;
                height: 2.5px;
            }

            .nav-cta-btn {
                font-size: 18px !important;
                padding: 14px 36px !important;
                margin-top: 8px;
            }
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 80px 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
        }

        .section-title {
            font-size: 28px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 12px;
            text-align: left;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 40px;
            max-width: 600px;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 22px;
            }
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 28px;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--nav-height);
            overflow: hidden;
            background: linear-gradient(160deg, #F0F6FF 0%, #F8FAFD 30%, #EDF4FC 60%, #F8FAFD 100%);
        }

        .hero-bg-pattern {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.35;
            z-index: 0;
            pointer-events: none;
        }

        .hero-bg-lines {
            position: absolute;
            top: -100px;
            right: -80px;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(27, 110, 243, 0.06) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }

        .hero-bg-lines-2 {
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.05) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            width: 100%;
        }

        .hero-text {
            max-width: 560px;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-full);
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }

        .hero-title {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .hero-title span {
            color: var(--primary);
            position: relative;
        }

        .hero-title span::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            opacity: 0.2;
            border-radius: 2px;
        }

        .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 480px;
        }

        .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 30px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.3px;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.45);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 420px;
        }

        .hero-cards-stack {
            position: relative;
            width: 100%;
            height: 380px;
        }

        .hero-float-card {
            position: absolute;
            background: #fff;
            border-radius: var(--radius);
            padding: 22px 24px;
            box-shadow: var(--shadow-lg);
            text-align: center;
            transition: transform var(--transition), box-shadow var(--transition);
            min-width: 170px;
        }

        .hero-float-card:hover {
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.12);
        }

        .hero-float-card.card-1 {
            top: 10px;
            right: 20px;
            transform: rotate(-3deg);
            z-index: 3;
            border-left: 3px solid var(--primary);
        }

        .hero-float-card.card-2 {
            top: 100px;
            right: 90px;
            transform: rotate(2deg);
            z-index: 2;
            border-left: 3px solid var(--accent);
        }

        .hero-float-card.card-3 {
            top: 200px;
            right: 30px;
            transform: rotate(-1.5deg);
            z-index: 1;
            border-left: 3px solid var(--success);
        }

        .hero-float-card .card-number {
            font-size: 38px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 4px;
            letter-spacing: -1px;
        }

        .hero-float-card .card-unit {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .hero-float-card .card-label {
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 6px;
            opacity: 0.8;
        }

        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-float-card {
                min-width: 140px;
                padding: 16px 18px;
            }
            .hero-float-card .card-number {
                font-size: 30px;
            }
            .hero-float-card.card-1 {
                right: 0;
                top: 20px;
            }
            .hero-float-card.card-2 {
                right: 70px;
                top: 100px;
            }
            .hero-float-card.card-3 {
                right: 10px;
                top: 190px;
            }
            .hero-cards-stack {
                height: 340px;
            }
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: auto;
                padding-top: calc(var(--nav-height) + 30px);
                padding-bottom: 50px;
            }
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-text {
                max-width: 100%;
                text-align: center;
            }
            .hero-title {
                font-size: 26px;
            }
            .hero-desc {
                font-size: 15px;
                max-width: 100%;
                margin: 0 auto 24px;
            }
            .hero-btns {
                justify-content: center;
            }
            .hero-visual {
                min-height: auto;
            }
            .hero-cards-stack {
                height: 200px;
                display: flex;
                gap: 12px;
                justify-content: center;
                flex-wrap: wrap;
                align-items: stretch;
            }
            .hero-float-card {
                position: relative;
                top: auto !important;
                right: auto !important;
                transform: none !important;
                flex: 0 0 auto;
                min-width: 100px;
                padding: 14px 16px;
                box-shadow: var(--shadow);
            }
            .hero-float-card .card-number {
                font-size: 26px;
            }
            .hero-float-card .card-label {
                font-size: 11px;
            }
            .hero-badge {
                margin-left: auto;
                margin-right: auto;
            }
        }

        /* ========== STATS STRIP ========== */
        .stats-section {
            padding: 40px 0 70px;
            background: var(--card-bg);
            position: relative;
            z-index: 3;
            margin-top: -20px;
            border-top: 1px solid var(--border-light);
        }

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

        .stat-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .stat-number {
            font-size: 40px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -1px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .stat-icon-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            margin-right: 6px;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }

        @media (max-width: 768px) {
            .stats-section {
                padding: 30px 0 50px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .stat-number {
                font-size: 30px;
            }
            .stat-label {
                font-size: 13px;
            }
        }

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

        .services-header {
            margin-bottom: 40px;
        }

        .services-grid-row-1 {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 24px;
            margin-bottom: 24px;
        }

        .services-grid-row-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .service-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 28px 28px 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
            display: flex;
            gap: 18px;
            align-items: flex-start;
            cursor: default;
        }

        .service-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 20%;
            bottom: 20%;
            width: 0;
            background: var(--primary);
            border-radius: 0 4px 4px 0;
            transition: width var(--transition);
        }

        .service-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .service-card:hover::before {
            width: 4px;
        }

        .service-card.large-card {
            grid-row: 1;
            grid-column: 1;
        }

        .service-card.large-card .service-icon-wrap {
            width: 80px;
            height: 80px;
            flex-shrink: 0;
        }

        .service-card.large-card .service-content h3 {
            font-size: 20px;
        }

        .service-card.large-card .service-content p {
            font-size: 15px;
            max-width: 400px;
        }

        .side-stack {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .side-stack .service-card {
            flex: 1;
        }

        .service-icon-wrap {
            width: 52px;
            height: 52px;
            flex-shrink: 0;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            position: relative;
            overflow: hidden;
        }

        .service-icon-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
            position: absolute;
            top: 0;
            left: 0;
            opacity: 0.7;
        }

        .service-icon-wrap i {
            position: relative;
            z-index: 2;
        }

        .service-content h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.3;
        }

        .service-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        @media (max-width: 768px) {
            .services-grid-row-1 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .services-grid-row-2 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .side-stack {
                gap: 16px;
            }
            .service-card {
                padding: 20px 18px;
                gap: 14px;
            }
            .service-card.large-card .service-icon-wrap {
                width: 56px;
                height: 56px;
            }
            .service-card.large-card .service-content h3 {
                font-size: 17px;
            }
            .service-icon-wrap {
                width: 44px;
                height: 44px;
                font-size: 18px;
            }
            .service-content h3 {
                font-size: 15px;
            }
            .service-content p {
                font-size: 13px;
            }
        }

        /* ========== RESULTS COMPARISON ========== */
        .results-section {
            background: var(--card-bg);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .results-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .result-card {
            border-radius: var(--radius);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
        }

        .result-card.before {
            background: #F5F6F8;
            border: 1px solid #E8E9ED;
        }

        .result-card.after {
            background: #fff;
            border: 2px solid var(--primary);
            box-shadow: 0 0 0 8px rgba(27, 110, 243, 0.04);
        }

        .result-card .result-badge {
            display: inline-block;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }

        .result-card.before .result-badge {
            background: #E8E9ED;
            color: #6B7280;
        }

        .result-card.after .result-badge {
            background: var(--success-light);
            color: var(--success);
        }

        .result-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 18px;
            color: var(--text-primary);
        }

        .result-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            gap: 12px;
        }

        .result-row:last-child {
            border-bottom: none;
        }

        .result-row .metric-name {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .result-row .metric-value {
            font-size: 16px;
            font-weight: 700;
            white-space: nowrap;
        }

        .result-card.before .metric-value {
            color: #6B7280;
        }

        .result-card.after .metric-value {
            color: var(--success);
        }

        .result-card.after .metric-value.up {
            color: var(--success);
        }

        .result-highlight {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            color: var(--success);
            background: var(--success-light);
            padding: 3px 10px;
            border-radius: var(--radius-full);
            margin-left: 4px;
        }

        @media (max-width: 768px) {
            .results-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .result-card {
                padding: 24px 18px;
            }
            .result-card h3 {
                font-size: 17px;
            }
            .result-row .metric-name {
                font-size: 13px;
            }
            .result-row .metric-value {
                font-size: 14px;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-radius: var(--radius);
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .faq-item:nth-child(even) {
            background: #F5F6F8;
        }
        .faq-item:nth-child(odd) {
            background: #fff;
        }

        .faq-item.active {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            background: none;
            border: none;
            cursor: pointer;
            gap: 14px;
            transition: color var(--transition);
        }

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

        .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--primary);
            transition: transform var(--transition);
        }

        .faq-item.active .faq-arrow {
            transform: rotate(90deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
            background: transparent;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        @media (max-width: 768px) {
            .faq-question {
                font-size: 15px;
                padding: 16px 16px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 16px;
            }
            .faq-answer p {
                font-size: 14px;
            }
        }

        /* ========== CONTACT / CTA ========== */
        .contact-section {
            background: linear-gradient(180deg, #F4F8FE 0%, #F8FAFD 100%);
            position: relative;
            overflow: hidden;
        }

        .contact-bg-img {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
            pointer-events: none;
        }

        .contact-inner {
            position: relative;
            z-index: 2;
            max-width: 680px;
            margin: 0 auto;
            text-align: center;
        }

        .contact-inner .section-title {
            text-align: center;
        }

        .contact-inner .section-subtitle {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        .contact-form {
            display: flex;
            gap: 14px;
            align-items: flex-end;
            flex-wrap: wrap;
            justify-content: center;
        }

        .contact-form .form-group {
            flex: 1 1 180px;
            min-width: 160px;
            text-align: left;
        }

        .contact-form label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            letter-spacing: 0.3px;
        }

        .contact-form input {
            width: 100%;
            padding: 13px 16px;
            font-size: 15px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            background: #fff;
            color: var(--text-primary);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .contact-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(27, 110, 243, 0.08);
            outline: none;
        }

        .contact-form .btn-submit {
            flex: 0 0 auto;
            padding: 13px 36px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-full);
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.3px;
            align-self: flex-end;
        }

        .contact-form .btn-submit:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.45);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .contact-form {
                flex-direction: column;
                gap: 16px;
            }
            .contact-form .form-group {
                flex: 1 1 auto;
                min-width: 100%;
            }
            .contact-form .btn-submit {
                width: 100%;
                text-align: center;
                align-self: center;
                padding: 14px;
                font-size: 16px;
            }
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--dark-bg);
            color: #C8CDD6;
            padding: 50px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col p {
            font-size: 14px;
            line-height: 1.7;
            color: #A0A7B4;
            margin: 0;
        }

        .footer-col .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col .footer-links a {
            font-size: 14px;
            color: #A0A7B4;
            transition: color var(--transition);
        }

        .footer-col .footer-links a:hover {
            color: #fff;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 14px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #A0A7B4;
            font-size: 16px;
            transition: all var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #7B8290;
        }

        @media (max-width: 768px) {
            .footer {
                padding: 36px 0 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 26px;
                margin-bottom: 26px;
            }
            .footer-col h4 {
                font-size: 15px;
                margin-bottom: 10px;
            }
            .footer-col p,
            .footer-col .footer-links a {
                font-size: 13px;
            }
        }

        /* ========== UTILITY ========== */
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }

        /* ========== ANIMATIONS ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-on-scroll {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .animate-on-scroll.visible {
            opacity: 1;
            transform: translateY(0);
        }