:root {
            --hwo3t-primary: #ff4e22;
            --hwo3t-primary-grad: linear-gradient(135deg, #ff8c42 0%, #ff4e22 100%);
            --hwo3t-bg-light: #ffffff;
            --hwo3t-bg-soft: #fbfbfd;
            --hwo3t-text-dark: #1d1d1f;
            --hwo3t-text-gray: #86868b;
            --hwo3t-radius: 16px;
            --hwo3t-spacing: 8px;
            --hwo3t-container-width: 1300px;
        }

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

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--hwo3t-bg-light);
            color: var(--hwo3t-text-dark);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 导航栏 */
        .hwo3t-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            display: flex;
            align-items: center;
        }

        .hwo3t-nav-container {
            max-width: var(--hwo3t-container-width);
            margin: 0 auto;
            padding: 0 32px;
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .hwo3t-logo {
            flex-shrink: 0;
            height: 32px;
            display: flex;
            align-items: center;
        }

        .hwo3t-logo img {
            height: 100%;
            width: auto;
        }

        .hwo3t-nav-menu {
            display: flex;
            gap: 24px;
            list-style: none;
            flex-wrap: wrap;
            min-width: 0;
        }

        .hwo3t-nav-menu a {
            text-decoration: none;
            color: var(--hwo3t-text-dark);
            font-size: 15px;
            font-weight: 500;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

        .hwo3t-nav-menu a:hover {
            color: var(--hwo3t-primary);
        }

        .hwo3t-nav-menu a.hwo3t-active {
            color: var(--hwo3t-primary);
            position: relative;
        }

        .hwo3t-nav-menu a.hwo3t-active::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--hwo3t-primary);
        }

        /* Hero 区域 - 独特浮动布局 */
        .hwo3t-hero {
            padding-top: 140px;
            padding-bottom: 80px;
            background: radial-gradient(circle at 90% 10%, rgba(255, 78, 34, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(255, 140, 66, 0.08) 0%, transparent 40%);
            position: relative;
            overflow: hidden;
        }

        .hwo3t-hero-content {
            max-width: var(--hwo3t-container-width);
            margin: 0 auto;
            padding: 0 32px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .hwo3t-hero-text {
            flex: 1;
            min-width: 320px;
            word-break: break-word;
        }

        .hwo3t-hero-title {
            font-size: clamp(2.5rem, 5vw, 3.5rem);
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 24px;
            color: var(--hwo3t-text-dark);
        }

        .hwo3t-hero-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
            color: var(--hwo3t-text-gray);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .hwo3t-hero-visual {
            flex: 1;
            min-width: 320px;
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }

        /* 模拟颜文字浮动效果 */
        .hwo3t-emoji-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .hwo3t-floating-item {
            background: white;
            padding: 16px 24px;
            border-radius: 50px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            font-size: 24px;
            color: var(--hwo3t-primary);
            animation: hwo3t-float 4s ease-in-out infinite;
            border: 1px solid rgba(0,0,0,0.02);
        }

        .hwo3t-floating-item:nth-child(even) {
            animation-delay: 2s;
        }

        @keyframes hwo3t-float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-15px); }
        }

        /* 分类网格 */
        .hwo3t-section {
            padding: 96px 0;
            max-width: var(--hwo3t-container-width);
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        .hwo3t-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .hwo3t-section-title {
            font-size: clamp(2rem, 4vw, 2.5rem);
            margin-bottom: 16px;
        }

        .hwo3t-kaomoji-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }

        .hwo3t-kaomoji-card {
            background: var(--hwo3t-bg-soft);
            border-radius: var(--hwo3t-radius);
            padding: 32px;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
            gap: 20px;
            min-width: 0;
        }

        .hwo3t-kaomoji-card:hover {
            transform: translateY(-8px);
            background: white;
            box-shadow: 0 20px 40px rgba(0,0,0,0.06);
            border-color: rgba(255, 78, 34, 0.1);
        }

        .hwo3t-card-emoji {
            font-size: 32px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: white;
            border-radius: 12px;
            color: var(--hwo3t-primary);
        }

        .hwo3t-card-info h3 {
            font-size: 1.25rem;
            margin-bottom: 8px;
        }

        .hwo3t-card-info p {
            color: var(--hwo3t-text-gray);
            font-size: 14px;
        }

        /* 场景化智能方案 - 独特横向拉伸布局 */
        .hwo3t-scenarios {
            background-color: var(--hwo3t-text-dark);
            color: white;
            border-radius: 40px;
            margin: 48px 32px;
            padding: 80px 64px;
        }

        .hwo3t-scenario-container {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
        }

        .hwo3t-scenario-item {
            flex: 1;
            min-width: 300px;
            padding: 32px;
            background: rgba(255,255,255,0.05);
            border-radius: 24px;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .hwo3t-scenario-type {
            color: var(--hwo3t-primary);
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 20px;
            display: block;
        }

        .hwo3t-capability-list {
            list-style: none;
        }

        .hwo3t-capability-list li {
            margin-bottom: 12px;
            font-size: 15px;
            opacity: 0.8;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hwo3t-capability-list li::before {
            content: '✓';
            color: var(--hwo3t-primary);
        }

        /* 交互按钮 */
        .hwo3t-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hwo3t-btn {
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-block;
            text-align: center;
        }

        .hwo3t-btn-primary {
            background: var(--hwo3t-primary-grad);
            color: white;
            box-shadow: 0 4px 15px rgba(255, 78, 34, 0.3);
        }

        .hwo3t-btn-primary:hover {
            transform: scale(1.05);
            box-shadow: 0 6px 20px rgba(255, 78, 34, 0.4);
        }

        /* 页脚 */
        .hwo3t-footer {
            background: var(--hwo3t-bg-soft);
            padding: 80px 32px 40px;
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        .hwo3t-footer-content {
            max-width: var(--hwo3t-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .hwo3t-footer-brand {
            flex: 1;
            min-width: 200px;
        }

        .hwo3t-footer-brand h2 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--hwo3t-primary);
        }

        .hwo3t-footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
            flex: 2;
        }

        .hwo3t-link-group h4 {
            margin-bottom: 20px;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--hwo3t-text-gray);
        }

        .hwo3t-link-group ul {
            list-style: none;
        }

        .hwo3t-link-group ul li {
            margin-bottom: 10px;
        }

        .hwo3t-link-group a {
            text-decoration: none;
            color: var(--hwo3t-text-dark);
            font-size: 14px;
            transition: color 0.3s;
        }

        .hwo3t-link-group a:hover {
            color: var(--hwo3t-primary);
        }

        .hwo3t-copyright {
            max-width: var(--hwo3t-container-width);
            margin: 40px auto 0;
            padding-top: 24px;
            border-top: 1px solid rgba(0,0,0,0.05);
            text-align: center;
            color: var(--hwo3t-text-gray);
            font-size: 12px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .hwo3t-nav-menu {
                display: none; /* 简化移动端，实际项目中应有汉堡菜单 */
            }
            .hwo3t-hero {
                padding-top: 100px;
                text-align: center;
            }
            .hwo3t-hero-content {
                justify-content: center;
            }
            .hwo3t-cta-group {
                justify-content: center;
            }
            .hwo3t-scenarios {
                padding: 40px 24px;
                margin: 24px 16px;
            }
        }