:root {
            --kz1b-primary: #FF9100;
            --kz1b-primary-dark: #E65100;
            --kz1b-accent: #D4333C;
            --kz1b-text-dark: #1D1D1F;
            --kz1b-text-light: #86868B;
            --kz1b-bg-gray: #F5F5F7;
            --kz1b-white: #FFFFFF;
            --kz1b-transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --kz1b-shadow-soft: 0 10px 30px rgba(0,0,0,0.05);
            --kz1b-shadow-hover: 0 20px 40px rgba(0,0,0,0.1);
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
            color: var(--kz1b-text-dark);
            line-height: 1.7;
            background-color: var(--kz1b-white);
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Navigation */
        .kz1b-nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .kz1b-nav-container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 48px;
            height: 72px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .kz1b-logo {
            flex-shrink: 0;
            min-width: 0;
        }

        .kz1b-logo img {
            height: 32px;
            width: auto;
            display: block;
        }

        .kz1b-menu {
            display: flex;
            list-style: none;
            gap: 24px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .kz1b-menu-link {
            text-decoration: none;
            color: var(--kz1b-text-dark);
            font-size: 15px;
            font-weight: 500;
            transition: var(--kz1b-transition);
            position: relative;
            padding: 8px 0;
        }

        .kz1b-menu-link:hover {
            color: var(--kz1b-primary);
        }

        .kz1b-menu-link.active {
            color: var(--kz1b-accent);
        }

        .kz1b-menu-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--kz1b-accent);
            border-radius: 2px;
        }

        /* Hero Section */
        .kz1b-hero {
            padding-top: 140px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 90% 10%, rgba(255, 145, 0, 0.08) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(212, 51, 60, 0.05) 0%, transparent 40%);
            position: relative;
        }

        .kz1b-container-main {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .kz1b-hero-layout {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .kz1b-hero-content {
            flex: 1;
            min-width: 320px;
        }

        .kz1b-hero-badge {
            display: inline-block;
            background: rgba(255, 145, 0, 0.1);
            color: var(--kz1b-primary-dark);
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .kz1b-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            color: var(--kz1b-text-dark);
            margin-bottom: 24px;
            word-break: keep-all;
        }

        .kz1b-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.4rem);
            color: var(--kz1b-text-light);
            margin-bottom: 48px;
            max-width: 600px;
        }

        .kz1b-download-box {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .kz1b-btn {
            padding: 16px 32px;
            border-radius: 12px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--kz1b-transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            min-width: 180px;
        }

        .kz1b-btn-primary {
            background: linear-gradient(135deg, var(--kz1b-primary), #FFB300);
            color: white;
            box-shadow: 0 8px 20px rgba(255, 145, 0, 0.3);
        }

        .kz1b-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(255, 145, 0, 0.4);
        }

        .kz1b-btn-outline {
            border: 2px solid var(--kz1b-text-dark);
            color: var(--kz1b-text-dark);
        }

        .kz1b-btn-outline:hover {
            background: var(--kz1b-text-dark);
            color: white;
            transform: translateY(-3px);
        }

        /* Mockup Visual */
        .kz1b-hero-visual {
            flex: 1;
            min-width: 300px;
            display: flex;
            justify-content: center;
            position: relative;
        }

        .kz1b-phone-frame {
            width: 280px;
            height: 560px;
            background: #111;
            border-radius: 40px;
            border: 12px solid #222;
            position: relative;
            box-shadow: 0 50px 100px rgba(0,0,0,0.2);
            overflow: hidden;
        }

        .kz1b-phone-screen {
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, #D4333C 0%, #FF9100 100%);
            display: flex;
            flex-direction: column;
            padding: 24px;
            color: white;
        }

        .kz1b-app-mock {
            flex: 1;
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: 20px;
            background: rgba(255,255,255,0.1);
            backdrop-filter: blur(10px);
            margin-top: 40px;
        }

        /* Solutions Section */
        .kz1b-section {
            padding: 96px 0;
        }

        .kz1b-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .kz1b-section-title {
            font-size: clamp(2rem, 3vw + 0.5rem, 2.8rem);
            font-weight: 700;
            margin-bottom: 16px;
        }

        .kz1b-solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            flex-wrap: wrap;
        }

        .kz1b-solution-card {
            background: var(--kz1b-bg-gray);
            border-radius: 24px;
            padding: 40px;
            transition: var(--kz1b-transition);
            border: 1px solid transparent;
            min-width: 0;
        }

        .kz1b-solution-card:hover {
            background: var(--kz1b-white);
            border-color: var(--kz1b-primary);
            box-shadow: var(--kz1b-shadow-hover);
            transform: translateY(-8px);
        }

        .kz1b-industry-tag {
            color: var(--kz1b-primary);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
            display: block;
        }

        .kz1b-tool-list {
            list-style: none;
            margin-top: 24px;
        }

        .kz1b-tool-item {
            padding: 12px 0;
            border-top: 1px solid rgba(0,0,0,0.05);
            color: var(--kz1b-text-light);
            font-size: 15px;
            display: flex;
            align-items: center;
        }

        .kz1b-tool-item::before {
            content: '•';
            color: var(--kz1b-primary);
            margin-right: 12px;
            font-size: 20px;
        }

        /* Features Section - Split Layout */
        .kz1b-feature-split {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 80px;
            margin-bottom: 96px;
        }

        .kz1b-feature-image-area {
            flex: 1;
            min-width: 320px;
            height: 450px;
            background: #F0F0F2;
            border-radius: 32px;
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .kz1b-abstract-shape {
            width: 70%;
            height: 70%;
            background: linear-gradient(45deg, var(--kz1b-primary), var(--kz1b-accent));
            border-radius: 20% 50% 30% 70% / 60% 40% 60% 40%;
            filter: blur(40px);
            opacity: 0.3;
        }

        .kz1b-feature-text {
            flex: 1;
            min-width: 320px;
        }

        .kz1b-feature-text h3 {
            font-size: 2rem;
            margin-bottom: 24px;
        }

        /* Dynamic Section */
        .kz1b-dynamic-news {
            background: var(--kz1b-text-dark);
            color: white;
            border-radius: 40px;
            padding: 64px;
        }

        /* Footer */
        .kz1b-footer {
            background: var(--kz1b-bg-gray);
            padding: 80px 0 40px;
        }

        .kz1b-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
            flex-wrap: wrap;
        }

        .kz1b-footer-brand h2 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--kz1b-accent);
        }

        .kz1b-footer-links h4 {
            margin-bottom: 24px;
            font-size: 16px;
        }

        .kz1b-footer-links ul {
            list-style: none;
        }

        .kz1b-footer-links li {
            margin-bottom: 12px;
        }

        .kz1b-footer-links a {
            text-decoration: none;
            color: var(--kz1b-text-light);
            transition: var(--kz1b-transition);
        }

        .kz1b-footer-links a:hover {
            color: var(--kz1b-primary);
        }

        .kz1b-copyright {
            padding-top: 32px;
            border-top: 1px solid rgba(0,0,0,0.1);
            text-align: center;
            color: var(--kz1b-text-light);
            font-size: 14px;
        }

        /* Responsive Fixes */
        @media (max-width: 768px) {
            .kz1b-nav-container {
                padding: 0 24px;
            }
            .kz1b-menu {
                display: none; /* In a real scenario, this would be a mobile toggle */
            }
            .kz1b-hero {
                padding-top: 100px;
            }
            .kz1b-hero-layout {
                text-align: center;
                justify-content: center;
            }
            .kz1b-hero-visual {
                display: none;
            }
            .kz1b-section {
                padding: 64px 0;
            }
            .kz1b-feature-split {
                flex-direction: column;
            }
            .kz1b-feature-split:nth-child(even) {
                flex-direction: column;
            }
        }

        /* Structured Data for SEO */