* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Helvetica, 'Noto Sans', sans-serif;
            background-color: #f5f7fb;
            color: #1e1f2a;
            line-height: 1.5;
            font-size: 16px;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 导航 */
        .navbar {
            background: #ffffff;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid #eeeef2;
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 12px 0;
            gap: 12px;
        }
        .logo {
            font-size: clamp(1.3rem, 5vw, 1.7rem);
            font-weight: 700;
            background: linear-gradient(135deg, #1E2A5E, #3B4E8C);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
        }
        .logo span {
            color: #e67e22;
            background: none;
        }
        .nav-links {
            display: flex;
            gap: clamp(12px, 3vw, 28px);
            flex-wrap: wrap;
            list-style: none;
        }
        .nav-links a {
            text-decoration: none;
            font-weight: 500;
            font-size: 0.9rem;
            color: #2c3e4e;
            transition: 0.2s;
            padding: 4px 0;
        }
        .nav-links a:hover {
            color: #e67e22;
        }
        .btn-call {
            background: #e67e22;
            color: white;
            padding: 8px 20px;
            border-radius: 40px;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            display: inline-block;
            transition: 0.2s;
        }
        .btn-call:hover {
            background: #d35400;
        }

        /* Hero区域 - 纯文字 */
        .hero {
            padding: 40px 0;
            background: linear-gradient(135deg, #f8f6ff 0%, #ffffff 100%);
        }
        .hero-text {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }
        .hero-badge {
            background: #fef3e8;
            color: #e67e22;
            border-radius: 50px;
            padding: 4px 14px;
            display: inline-block;
            font-weight: 500;
            font-size: 0.8rem;
            margin-bottom: 16px;
        }
        .hero-text h1 {
            font-size: clamp(1.6rem, 6vw, 2.5rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #0f172a;
        }
        .hero-text p {
            font-size: clamp(0.9rem, 4vw, 1.05rem);
            color: #4a5a6e;
            margin-bottom: 24px;
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 32px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .stat-number {
            font-size: 1.5rem;
            font-weight: 800;
            color: #1E2A5E;
        }

        /* 通用区块 */
        .section {
            padding: 48px 0;
            border-bottom: 1px solid #ececf0;
        }
        .section-title {
            font-size: clamp(1.4rem, 5vw, 1.8rem);
            font-weight: 700;
            margin-bottom: 12px;
            text-align: center;
        }
        .section-sub {
            text-align: center;
            color: #5b6e8c;
            font-size: 0.9rem;
            max-width: 90%;
            margin: 0 auto 32px;
        }

        /* 卡片网格 - 手机单列，电脑4列整齐 */
        .card-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        /* 平板：2列 */
        @media (min-width: 640px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        /* 电脑：4列，4个卡片刚好一排 */
        @media (min-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .service-card {
            background: white;
            border-radius: 20px;
            padding: 24px 16px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
            border: 1px solid #edeef2;
            transition: 0.2s;
            text-align: center;
        }
        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
        }
        .service-icon {
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .service-card h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .service-card p {
            font-size: 0.8rem;
            color: #5a687c;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .tag {
            display: inline-block;
            background: #f0f3fa;
            padding: 3px 10px;
            border-radius: 50px;
            font-size: 0.65rem;
            font-weight: 500;
            margin: 3px 3px 0 0;
        }

        /* 会议板块 */
        .conference-wrap {
            background: #ffffff;
            border-radius: 24px;
            padding: 32px 24px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.04);
            border: 1px solid #edeef2;
        }
        .two-columns {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }
        .col {
            flex: 1;
            min-width: 200px;
        }
        .feature-list {
            list-style: none;
            margin-top: 16px;
        }
        .feature-list li {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
        }

        /* 案例卡片 */
        .case-item {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid #edeef2;
        }
        .case-img {
            height: 120px;
            background: #eef2fa;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 500;
            font-size: 0.85rem;
            color: #2c3e66;
        }
        .case-info {
            padding: 14px;
        }
        .case-info h4 {
            font-size: 0.95rem;
            margin-bottom: 6px;
        }
        .case-info p {
            font-size: 0.75rem;
            color: #5a687c;
        }

        /* 电话直连区域 */
        .call-section {
            background: linear-gradient(135deg, #1E2A5E 0%, #2a3a6e 100%);
            color: white;
            border-radius: 28px;
            padding: 40px 24px;
            margin: 32px 0 20px;
            text-align: center;
        }
        .call-section h2 {
            font-size: clamp(1.3rem, 5vw, 1.7rem);
            margin-bottom: 12px;
        }
        .call-section p {
            opacity: 0.85;
            margin-bottom: 24px;
            font-size: 0.9rem;
        }
        .phone-number {
            font-size: clamp(1.4rem, 7vw, 2rem);
            font-weight: 800;
            letter-spacing: 2px;
            background: #fff;
            color: #1E2A5E;
            display: inline-block;
            padding: 10px 28px;
            border-radius: 60px;
            text-decoration: none;
            margin-bottom: 16px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.2);
            transition: 0.2s;
        }
        .phone-number:hover {
            background: #e67e22;
            color: white;
        }
        .call-tip {
            font-size: 0.75rem;
            opacity: 0.7;
        }

        /* 底部 */
        .footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 40px 0 28px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.8rem;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 24px;
        }
        @media (max-width: 640px) {
            .footer-inner {
                flex-direction: column;
                text-align: center;
                gap: 16px;
            }
            .nav-inner {
                flex-direction: column;
                text-align: center;
            }
            .nav-links {
                justify-content: center;
            }
            .hero-stats {
                gap: 20px;
            }
            .section {
                padding: 36px 0;
            }
            .service-card {
                padding: 20px 16px;
            }
        }