/* ============================================
           DESIGN SYSTEM
           ============================================ */
        :root {
            /* Light Background */
            --bg-primary: #FFFFFF;
            --bg-secondary: #F8FAFC;
            --bg-tertiary: #F1F5F9;

            /* WeChat Green - Primary Brand */
            --wechat: #07C160;
            --wechat-light: #E8F9EE;
            --wechat-dark: #059B4E;

            /* Trust Blue - Secondary */
            --trust-blue: #1E40AF;
            --trust-blue-light: #E0E7FF;

            /* Gold Accent */
            --gold: #D4AF37;
            --gold-light: #FEF6E4;

            /* Neutrals */
            --text-primary: #1E293B;
            --text-secondary: #64748B;
            --text-muted: #94A3B8;
            --border: #E2E8F0;
            --border-light: #F1F5F9;

            /* Effects */
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07);
            --shadow-lg: 0 20px 40px rgba(0,0,0,0.08);
            --shadow-xl: 0 25px 50px -12px rgba(0,0,0,0.15);
            --glass-bg: rgba(255,255,255,0.85);
            --glass-border: rgba(255,255,255,0.5);
            --float-shadow: 0 12px 32px rgba(7,193,96,0.15);

            /* Spacing */
            --section-py: 100px;
            --container-w: 1200px;

            /* Transitions */
            --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
            --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-secondary);
            overflow-x: hidden;
        }

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

        /* Background Pattern */
        .bg-pattern {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: -1;
            opacity: 0.4;
            background-image:
                radial-gradient(circle at 20% 80%, rgba(7,193,96,0.08) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(30,64,175,0.06) 0%, transparent 50%),
                radial-gradient(circle at 40% 40%, rgba(212,175,55,0.04) 0%, transparent 30%);
        }

        /* ============================================
           TYPOGRAPHY
           ============================================ */
        h1, h2, h3, h4 {
            font-weight: 600;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--wechat) 0%, var(--trust-blue) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ============================================
           NAVIGATION
           ============================================ */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 0;
            background: rgba(255,255,255,0.9);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            transition: all 0.3s var(--ease-out);
        }

        .nav.scrolled {
            padding: 12px 0;
            box-shadow: var(--shadow-md);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
        }

        .nav-logo-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .nav-logo-icon svg {
            width: 100%;
            height: 100%;
        }

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

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: color 0.2s;
            position: relative;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--wechat);
            transition: width 0.3s var(--ease-out);
        }

        .nav-links a:hover {
            color: var(--wechat);
        }

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

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            background: var(--wechat);
            color: white;
            text-decoration: none;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.3s var(--ease-out);
        }

        .nav-cta:hover {
            background: var(--wechat-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(7,193,96,0.3);
        }

        .nav-cta svg {
            width: 16px;
            height: 16px;
            fill: currentColor;
        }

        /* Mobile Menu */
        .nav-mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
        }

        .nav-mobile-toggle span {
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all 0.3s;
        }

        /* ============================================
           HERO SECTION - REDESIGNED
           ============================================ */
        .hero {
            position: relative;
            min-height: 680px;
            padding: 140px 0 80px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: linear-gradient(135deg, #FFFFFF 0%, #F0FDF4 50%, #EFF6FF 100%);
        }

        .hero-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            width: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        .hero-content {
            position: relative;
            z-index: 10;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            background: var(--wechat-light);
            border: 1px solid rgba(7,193,96,0.2);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            color: var(--wechat);
            margin-bottom: 24px;
            animation: fadeInUp 0.6s var(--ease-out) forwards;
        }

        .hero-badge-dot {
            width: 8px;
            height: 8px;
            background: var(--wechat);
            border-radius: 50%;
            animation: pulse 2s infinite;
        }

        .hero h1 {
            font-size: 48px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            line-height: 1.15;
            animation: fadeInUp 0.6s var(--ease-out) 0.1s forwards;
            opacity: 0;
        }

        .hero h1 span {
            background: linear-gradient(135deg, var(--wechat) 0%, var(--trust-blue) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
            animation: fadeInUp 0.6s var(--ease-out) 0.2s forwards;
            opacity: 0;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            animation: fadeInUp 0.6s var(--ease-out) 0.3s forwards;
            opacity: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 32px;
            background: var(--wechat);
            color: white;
            text-decoration: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.3s var(--ease-out);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--wechat-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(7,193,96,0.35);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 32px;
            background: white;
            color: var(--text-primary);
            text-decoration: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.3s var(--ease-out);
            border: 1px solid var(--border);
        }

        .btn-secondary:hover {
            border-color: var(--wechat);
            color: var(--wechat);
            transform: translateY(-3px);
        }

        /* Hero Visual Area */
        .hero-visual {
            position: relative;
            height: 480px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* Hero Illustration SVG */
        .hero-illustration {
            width: 100%;
            height: 100%;
            max-width: 680px;
            filter: drop-shadow(0 20px 40px rgba(0,0,0,0.1));
        }

        /* Responsive Hero */
        @media (max-width: 1100px) {
            .hero-wrapper {
                grid-template-columns: 1fr;
                gap: 40px;
                text-align: center;
                padding: 0 24px;
            }

            .hero-content {
                max-width: 100%;
                order: 1;
            }

            .hero h1 {
                font-size: 40px;
            }

            .hero-subtitle {
                max-width: 500px;
                margin-left: auto;
                margin-right: auto;
            }

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

            .hero-visual {
                height: auto;
                min-height: 300px;
                order: 2;
            }

            .hero-illustration {
                max-width: 400px;
                margin: 0 auto;
            }
        }

        @media (max-width: 600px) {
            .hero-illustration {
                max-width: 300px;
            }
        }

        /* ============================================
           TRUST BAR
           ============================================ */
        .trust-bar {
            padding: 40px 0;
            background: white;
            border-bottom: 1px solid var(--border);
        }

        .trust-items {
            display: flex;
            justify-content: center;
            gap: 60px;
            flex-wrap: wrap;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .trust-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .trust-icon svg {
            width: 24px;
            height: 24px;
        }

        .trust-icon.green {
            background: var(--wechat-light);
        }

        .trust-icon.green svg {
            fill: var(--wechat);
        }

        .trust-icon.blue {
            background: var(--trust-blue-light);
        }

        .trust-icon.blue svg {
            fill: var(--trust-blue);
        }

        .trust-icon.gold {
            background: var(--gold-light);
        }

        .trust-icon.gold svg {
            fill: var(--gold);
        }

        .trust-text {
            display: flex;
            flex-direction: column;
        }

        .trust-label {
            font-size: 12px;
            color: var(--text-muted);
        }

        .trust-value {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
        }

        /* ============================================
           SERVICES SECTION
           ============================================ */
        .services {
            padding: var(--section-py) 0;
            background: var(--bg-secondary);
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 14px;
            background: var(--wechat-light);
            color: var(--wechat);
            font-size: 13px;
            font-weight: 600;
            border-radius: 50px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 40px;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

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

        .service-card {
            background: white;
            border-radius: 20px;
            padding: 36px 28px;
            border: 1px solid var(--border);
            transition: all 0.4s var(--ease-out);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--wechat), var(--trust-blue));
            transform: scaleX(0);
            transition: transform 0.4s var(--ease-out);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .service-card:hover::before {
            transform: scaleX(1);
        }

        .service-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            background: var(--wechat-light);
        }

        .service-icon svg {
            width: 32px;
            height: 32px;
            fill: var(--wechat);
        }

        .service-icon.blue {
            background: var(--trust-blue-light);
        }

        .service-icon.blue svg {
            fill: var(--trust-blue);
        }

        .service-icon.gold {
            background: var(--gold-light);
        }

        .service-icon.gold svg {
            fill: var(--gold);
        }

        .service-title {
            font-size: 18px;
            color: var(--text-primary);
            margin-bottom: 12px;
            font-weight: 600;
        }

        .service-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ============================================
           FEATURES SECTION
           ============================================ */
        .features {
            padding: var(--section-py) 0;
            background: white;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .feature-card {
            padding: 40px 32px;
            background: var(--bg-secondary);
            border-radius: 20px;
            transition: all 0.4s var(--ease-out);
        }

        .feature-card:hover {
            background: var(--wechat-light);
            transform: translateY(-4px);
        }

        .feature-number {
            font-size: 48px;
            font-weight: 700;
            color: var(--wechat);
            opacity: 0.2;
            margin-bottom: 16px;
            line-height: 1;
        }

        .feature-title {
            font-size: 20px;
            color: var(--text-primary);
            margin-bottom: 12px;
            font-weight: 600;
        }

        .feature-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ============================================
           PROCESS SECTION
           ============================================ */
        .process {
            padding: var(--section-py) 0;
            background: var(--bg-secondary);
        }

        .process-steps {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 60px;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--wechat), var(--trust-blue));
            opacity: 0.3;
        }

        .process-step {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            position: relative;
            z-index: 1;
            flex: 1;
        }

        .process-icon {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: white;
            border: 3px solid var(--wechat);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            position: relative;
        }

        .process-icon svg {
            width: 32px;
            height: 32px;
            fill: var(--wechat);
        }

        .process-step-number {
            position: absolute;
            top: -8px;
            right: -8px;
            width: 28px;
            height: 28px;
            background: var(--wechat);
            color: white;
            border-radius: 50%;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .process-title {
            font-size: 17px;
            color: var(--text-primary);
            margin-bottom: 8px;
            font-weight: 600;
        }

        .process-desc {
            font-size: 14px;
            color: var(--text-secondary);
            max-width: 180px;
        }

        /* ============================================
           STATS SECTION
           ============================================ */
        .stats {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--wechat) 0%, var(--trust-blue) 100%);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            text-align: center;
        }

        .stat-item {
            color: white;
        }

        .stat-number {
            font-size: 52px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1;
        }

        .stat-label {
            font-size: 16px;
            opacity: 0.9;
        }

        /* ============================================
           CTA SECTION
           ============================================ */
        .cta {
            padding: var(--section-py) 0;
            background: white;
        }

        .cta-box {
            background: var(--bg-secondary);
            border-radius: 32px;
            padding: 80px 60px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 60%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(7,193,96,0.1) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-title {
            font-size: 36px;
            color: var(--text-primary);
            margin-bottom: 16px;
            position: relative;
        }

        .cta-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            position: relative;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            position: relative;
        }

        /* ============================================
           FOOTER
           ============================================ */
        .footer {
            padding: 60px 0 30px;
            background: var(--text-primary);
            color: white;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 60px;
            margin-bottom: 50px;
        }

        .footer-brand {
            max-width: 300px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-logo-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .footer-logo-icon svg {
            width: 100%;
            height: 100%;
        }

        .footer-desc {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .footer-verified {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            background: rgba(255,255,255,0.1);
            border-radius: 8px;
            font-size: 13px;
        }

        .footer-verified svg {
            width: 16px;
            height: 16px;
            fill: var(--wechat);
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .footer-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-contact-item svg {
            width: 18px;
            height: 18px;
            fill: var(--wechat);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .footer-contact-text {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            line-height: 1.5;
        }

        .footer-bottom {
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
        }

        .footer-links-inline {
            display: flex;
            gap: 24px;
        }

        .footer-links-inline a {
            color: rgba(255,255,255,0.5);
            text-decoration: none;
            transition: color 0.2s;
        }

        .footer-links-inline a:hover {
            color: white;
        }

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

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }

        .reveal {
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.8s var(--ease-out);
        }

        .reveal.active {
            opacity: 1;
            transform: translateY(0);
        }

        /* ============================================
           RESPONSIVE
           ============================================ */
        @media (max-width: 1100px) {
            .hero h1 {
                font-size: 44px;
            }

            .floating-elements {
                display: none;
            }

            .hero-visual {
                display: none;
            }

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }

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

        @media (max-width: 768px) {
            :root {
                --section-py: 60px;
            }

            .nav-links {
                display: none;
            }

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

            .hero {
                padding: 140px 0 60px;
                min-height: auto;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero-subtitle {
                font-size: 16px;
            }

            .hero-buttons {
                flex-direction: column;
            }

            .section-title {
                font-size: 28px;
            }

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

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

            .process-steps {
                flex-direction: column;
                gap: 30px;
            }

            .process-steps::before {
                display: none;
            }

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

            .cta-box {
                padding: 40px 24px;
            }

            .cta-title {
                font-size: 26px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 16px;
                text-align: center;
            }

            .trust-items {
                gap: 30px;
            }
        }