:root {
            --kz1b-primary: #FF9100;
            --kz1b-primary-dark: #E68200;
            --kz1b-text-dark: #1D1D1F;
            --kz1b-text-light: #86868B;
            --kz1b-bg-gray: #F5F5F7;
            --kz1b-white: #FFFFFF;
            --kz1b-transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
            --kz1b-container-width: 1400px;
        }

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

        body {
            font-family: "SF Pro SC", "SF Pro Display", "PingFang SC", "Helvetica Neue", Helvetica, Arial, sans-serif;
            color: var(--kz1b-text-dark);
            line-height: 1.6;
            background-color: var(--kz1b-white);
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 导航栏设计 */
        .kz1b-header {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .kz1b-nav-container {
            max-width: var(--kz1b-container-width);
            margin: 0 auto;
            padding: 0 48px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 64px;
            flex-wrap: wrap;
        }

        .kz1b-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

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

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

        .kz1b-menu a {
            text-decoration: none;
            color: var(--kz1b-text-dark);
            font-size: 14px;
            font-weight: 500;
            transition: var(--kz1b-transition);
            white-space: nowrap;
        }

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

        .kz1b-menu a.kz1b-active {
            color: var(--kz1b-primary);
            position: relative;
        }

        .kz1b-menu a.kz1b-active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--kz1b-primary);
        }

        /* Hero 区块 - 独特斜排布局 */
        .kz1b-hero {
            padding: 160px 48px 96px;
            background: linear-gradient(135deg, #FFF9F2 0%, #FFFFFF 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            position: relative;
        }

        .kz1b-hero-content {
            max-width: 800px;
            text-align: center;
            z-index: 2;
            min-width: 0;
        }

        .kz1b-hero h1 {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 700;
            margin-bottom: 24px;
            background: linear-gradient(to right, #1d1d1f, #FF9100);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            word-break: keep-all;
        }

        .kz1b-hero p {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.5rem);
            color: var(--kz1b-text-light);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .kz1b-cta-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            min-width: 0;
        }

        .kz1b-btn {
            padding: 16px 32px;
            border-radius: 32px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--kz1b-transition);
            font-size: 16px;
            cursor: pointer;
        }

        .kz1b-btn-primary {
            background: var(--kz1b-primary);
            color: var(--kz1b-white);
            box-shadow: 0 10px 20px rgba(255, 145, 0, 0.2);
        }

        .kz1b-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(255, 145, 0, 0.3);
            background: var(--kz1b-primary-dark);
        }

        /* 流程图可视化装饰 */
        .kz1b-hero-decoration {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 100%;
            height: 100%;
            z-index: 1;
            opacity: 0.4;
            pointer-events: none;
        }

        .kz1b-node {
            position: absolute;
            border: 2px solid var(--kz1b-primary);
            border-radius: 8px;
            background: white;
            padding: 10px 20px;
            font-size: 12px;
            color: var(--kz1b-primary);
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        }

        /* 教程核心板块 */
        .kz1b-tutorial-section {
            padding: 96px 48px;
            max-width: var(--kz1b-container-width);
            margin: 0 auto;
        }

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

        .kz1b-section-header h2 {
            font-size: clamp(2rem, 3vw + 0.5rem, 3rem);
            margin-bottom: 16px;
        }

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

        .kz1b-step-card {
            background: var(--kz1b-bg-gray);
            border-radius: 24px;
            padding: 40px;
            transition: var(--kz1b-transition);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .kz1b-step-card:hover {
            background: var(--kz1b-white);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            transform: translateY(-8px);
        }

        .kz1b-step-num {
            font-size: 48px;
            font-weight: 800;
            color: var(--kz1b-primary);
            opacity: 0.3;
            margin-bottom: 16px;
        }

        .kz1b-step-card h3 {
            font-size: 24px;
            margin-bottom: 16px;
        }

        .kz1b-step-card p {
            color: var(--kz1b-text-light);
            font-size: 16px;
            line-height: 1.8;
        }

        /* 行业解决方案区块 */
        .kz1b-solutions-section {
            background: var(--kz1b-text-dark);
            color: var(--kz1b-white);
            padding: 96px 48px;
            border-radius: 48px;
            margin: 0 24px 96px;
        }

        .kz1b-solution-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            max-width: var(--kz1b-container-width);
            margin: 0 auto;
        }

        .kz1b-solution-item {
            flex: 1;
            min-width: 300px;
        }

        .kz1b-solution-item h4 {
            font-size: 20px;
            color: var(--kz1b-primary);
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .kz1b-tool-tag {
            background: rgba(255, 255, 255, 0.1);
            padding: 12px 20px;
            border-radius: 12px;
            margin-bottom: 16px;
            display: block;
            transition: var(--kz1b-transition);
            border: 1px solid rgba(255,255,255,0.05);
        }

        .kz1b-tool-tag:hover {
            background: rgba(255, 145, 0, 0.2);
            border-color: var(--kz1b-primary);
        }

        /* 动态内容区块 */
        .kz1b-news-section {
            padding: 96px 48px;
            max-width: var(--kz1b-container-width);
            margin: 0 auto;
        }

        .kz1b-article-list {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .kz1b-article-card {
            flex: 1;
            min-width: 300px;
            padding: 24px;
            border-bottom: 1px solid var(--kz1b-bg-gray);
            transition: var(--kz1b-transition);
        }

        .kz1b-article-card:hover {
            border-color: var(--kz1b-primary);
            padding-left: 32px;
        }

        /* 页脚设计 */
        .kz1b-footer {
            background: var(--kz1b-bg-gray);
            padding: 80px 48px 48px;
        }

        .kz1b-footer-content {
            max-width: var(--kz1b-container-width);
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 48px;
        }

        .kz1b-footer-brand h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .kz1b-footer-brand p {
            color: var(--kz1b-text-light);
            max-width: 300px;
        }

        .kz1b-footer-links {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
        }

        .kz1b-footer-column h5 {
            margin-bottom: 20px;
            font-size: 16px;
        }

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

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

        .kz1b-footer-column a {
            text-decoration: none;
            color: var(--kz1b-text-light);
            font-size: 14px;
            transition: var(--kz1b-transition);
        }

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

        .kz1b-copyright {
            max-width: var(--kz1b-container-width);
            margin: 48px auto 0;
            padding-top: 24px;
            border-top: 1px solid rgba(0,0,0,0.05);
            text-align: center;
            color: var(--kz1b-text-light);
            font-size: 12px;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .kz1b-nav-container { padding: 0 24px; }
            .kz1b-hero { padding: 120px 24px 64px; }
        }

        @media (max-width: 768px) {
            .kz1b-menu { display: none; } /* 移动端可改为汉堡菜单，此处简化 */
            .kz1b-hero h1 { font-size: 2.5rem; }
            .kz1b-solutions-section { margin: 0 0 64px; border-radius: 0; }
            .kz1b-grid { grid-template-columns: 1fr; }
            .kz1b-footer-content { flex-direction: column; }
        }