* { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Microsoft YaHei', 'PingFang SC', Arial, sans-serif; background: #f5f7fb; color: #1a1a1a; line-height: 1.6; }
        a { text-decoration: none; color: inherit; }
        
        /* 顶部导航 */
        header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.92); backdrop-filter: blur(12px); border-bottom: 1px solid #e5e7eb; }
        .header-inner { max-width: 1280px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 0 24px; height: 72px; }
        .logo h1 { font-size: 22px; font-weight: 900; letter-spacing: -0.5px; }
        .logo p { font-size: 12px; color: #6b7280; margin-top: 2px; }
        .nav { display: flex; gap: 32px; }
        .nav a { font-size: 14px; font-weight: 500; color: #374151; transition: color 0.2s; padding: 8px 0; }
        .nav a:hover { color: #2563eb; }
        .search-box { display: flex; gap: 8px; }
        .search-box input { width: 200px; padding: 10px 16px; border: 1px solid #d1d5db; border-radius: 12px; font-size: 13px; outline: none; transition: border-color 0.2s, box-shadow 0.2s; }
        .search-box input:focus { border-color: #2563eb; box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
        .search-box button { padding: 10px 20px; background: #111827; color: white; border: none; border-radius: 12px; font-size: 13px; font-weight: 500; cursor: pointer; transition: opacity 0.2s; }
        .search-box button:hover { opacity: 0.85; }

        /* Hero区域 */
        .hero { position: relative; height: 580px; overflow: hidden; }
        .hero img { width: 100%; height: 100%; object-fit: cover; }
        .hero-overlay { position: absolute; inset: 0; background: linear-gradient(to right, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.3) 60%, transparent 100%); }
        .hero-content { position: absolute; inset: 0; max-width: 1280px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; }
        .hero-text { max-width: 520px; color: white; }
        .hero-text .tag { font-size: 11px; letter-spacing: 5px; text-transform: uppercase; opacity: 0.7; margin-bottom: 16px; }
        .hero-text h2 { font-size: 44px; font-weight: 900; line-height: 1.15; margin-bottom: 20px; }
        .hero-text p { font-size: 16px; line-height: 1.8; color: #d1d5db; margin-bottom: 28px; }
        .hero-btns { display: flex; gap: 12px; }
        .hero-btns .btn-primary { padding: 14px 32px; background: white; color: #111827; border-radius: 16px; font-weight: 600; font-size: 14px; transition: transform 0.2s; }
        .hero-btns .btn-primary:hover { transform: scale(1.03); }
        .hero-btns .btn-secondary { padding: 14px 32px; background: transparent; color: white; border: 1.5px solid rgba(255,255,255,0.5); border-radius: 16px; font-weight: 600; font-size: 14px; transition: all 0.2s; }
        .hero-btns .btn-secondary:hover { background: white; color: #111827; }

        /* 核心功能入口 */
        .section { max-width: 1280px; margin: 0 auto; padding: 64px 24px; }
        .feature-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
        .feature-card { background: white; border-radius: 24px; padding: 28px 20px; box-shadow: 0 2px 12px rgba(0,0,0,0.04); border: 1px solid #f3f4f6; transition: all 0.3s; cursor: pointer; }
        .feature-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.1); border-color: #e5e7eb; }
        .feature-icon { width: 48px; height: 48px; background: #111827; color: white; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 700; margin-bottom: 16px; }
        .feature-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
        .feature-card p { font-size: 12px; color: #6b7280; line-height: 1.6; }

        /* 新闻资讯 */
        .section-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 32px; }
        .section-header h2 { font-size: 28px; font-weight: 900; }
        .section-header p { color: #6b7280; font-size: 14px; margin-top: 4px; }
        .section-header a { font-size: 13px; color: #374151; padding: 8px 16px; border: 1px solid #d1d5db; border-radius: 10px; transition: all 0.2s; }
        .section-header a:hover { background: #111827; color: white; border-color: #111827; }
        .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .news-card { background: white; border-radius: 20px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.04); transition: all 0.3s; }
        .news-card:hover { box-shadow: 0 16px 40px rgba(0,0,0,0.1); transform: translateY(-2px); }
        .news-card img { width: 100%; height: 200px; object-fit: cover; }
        .news-card-body { padding: 24px; }
        .news-card h3 { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 10px; }
        .news-card p { font-size: 13px; color: #6b7280; line-height: 1.7; }

        /* 新房/二手房 */
        .bg-white-section { background: white; padding: 64px 0; }
        .house-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; max-width: 1280px; margin: 0 auto; padding: 0 24px; }
        .house-col h2 { font-size: 28px; font-weight: 900; margin-bottom: 24px; }
        .house-list { display: flex; flex-direction: column; gap: 14px; }
        .house-item { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; border: 1px solid #e5e7eb; border-radius: 16px; transition: all 0.2s; }
        .house-item:hover { border-color: #111827; }
        .house-item h3 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
        .house-item p { font-size: 12px; color: #6b7280; }
        .house-item button { padding: 8px 18px; background: #111827; color: white; border: none; border-radius: 10px; font-size: 12px; font-weight: 500; cursor: pointer; transition: opacity 0.2s; white-space: nowrap; }
        .house-item button:hover { opacity: 0.8; }

        /* 地图+VR */
        .split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 1280px; margin: 0 auto; padding: 0 24px 64px; }
        .split-card { position: relative; border-radius: 28px; overflow: hidden; min-height: 400px; cursor: pointer; }
        .split-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
        .split-card:hover img { transform: scale(1.04); }
        .split-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.45); padding: 32px; display: flex; flex-direction: column; justify-content: flex-end; color: white; }
        .split-overlay h2 { font-size: 32px; font-weight: 900; margin-bottom: 10px; }
        .split-overlay p { font-size: 14px; color: #d1d5db; line-height: 1.7; margin-bottom: 18px; }
        .split-overlay button { width: fit-content; padding: 12px 24px; background: white; color: #111827; border: none; border-radius: 14px; font-size: 13px; font-weight: 600; cursor: pointer; transition: transform 0.2s; }
        .split-overlay button:hover { transform: scale(1.03); }

        /* 刘公子专栏 */
        .column-section { background: #111827; color: white; padding: 80px 0; }
        .column-inner { max-width: 1280px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
        .column-text .tag { font-size: 11px; letter-spacing: 5px; text-transform: uppercase; color: #9ca3af; margin-bottom: 16px; }
        .column-text h2 { font-size: 44px; font-weight: 900; line-height: 1.15; margin-bottom: 20px; }
        .column-text p { font-size: 16px; color: #d1d5db; line-height: 1.8; margin-bottom: 28px; }
        .column-text button { padding: 14px 32px; background: white; color: #111827; border: none; border-radius: 16px; font-size: 14px; font-weight: 600; cursor: pointer; transition: transform 0.2s; }
        .column-text button:hover { transform: scale(1.03); }
        .column-img { border-radius: 24px; overflow: hidden; box-shadow: 0 24px 48px rgba(0,0,0,0.3); }
        .column-img img { width: 100%; height: 420px; object-fit: cover; display: block; }

        /* AI问答 */
        .ai-section { max-width: 900px; margin: 0 auto; padding: 80px 24px; }
        .ai-card { background: white; border-radius: 32px; padding: 48px; box-shadow: 0 4px 24px rgba(0,0,0,0.06); border: 1px solid #e5e7eb; }
        .ai-header { text-align: center; margin-bottom: 36px; }
        .ai-header .tag { font-size: 11px; letter-spacing: 5px; text-transform: uppercase; color: #9ca3af; margin-bottom: 10px; }
        .ai-header h2 { font-size: 36px; font-weight: 900; margin-bottom: 12px; }
        .ai-header p { color: #6b7280; font-size: 14px; max-width: 500px; margin: 0 auto; line-height: 1.7; }
        .ai-chat { background: #f7f9fc; border-radius: 20px; padding: 24px; border: 1px solid #e5e7eb; }
        .ai-q, .ai-a { padding: 18px 20px; border-radius: 14px; font-size: 14px; line-height: 1.7; }
        .ai-q { background: white; margin-bottom: 14px; box-shadow: 0 1px 4px rgba(0,0,0,0.04); }
        .ai-q strong, .ai-a strong { display: block; margin-bottom: 6px; font-size: 12px; }
        .ai-a { background: #111827; color: #e5e7eb; }
        .ai-a strong { color: #9ca3af; }

        /* Footer */
        footer { background: #101216; color: #9ca3af; padding: 56px 0 32px; }
        .footer-inner { max-width: 1280px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; }
        .footer-brand h3 { color: white; font-size: 20px; font-weight: 900; margin-bottom: 12px; }
        .footer-brand p { font-size: 13px; line-height: 1.7; }
        .footer-col h4 { color: white; font-size: 14px; font-weight: 700; margin-bottom: 16px; }
        .footer-col ul { list-style: none; }
        .footer-col li { margin-bottom: 10px; font-size: 13px; }
        .footer-col a:hover { color: white; }
        .footer-bottom { max-width: 1280px; margin: 40px auto 0; padding: 24px 24px 0; border-top: 1px solid #1f2937; font-size: 12px; text-align: center; }

        /* 响应式 */
        @media (max-width: 1024px) {
            .nav { display: none; }
            .feature-grid { grid-template-columns: repeat(3, 1fr); }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
            .house-grid, .split-grid, .column-inner { grid-template-columns: 1fr; }
            .footer-inner { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 640px) {
            .feature-grid { grid-template-columns: repeat(2, 1fr); }
            .news-grid { grid-template-columns: 1fr; }
            .hero-text h2 { font-size: 30px; }
            .footer-inner { grid-template-columns: 1fr; }
        }