* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }

        body {
            background-color: #f9fafc;
            color: #1e2a3a;
            line-height: 1.6;
            scroll-behavior: smooth;
        }

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

        /* 导航栏 */
        .navbar {
            background: linear-gradient(135deg, #0b1c3a 0%, #1a2f4f 100%);
            color: white;
            padding: 12px 0;
            /*position: sticky;*/
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 15px;
        }

        .logo a {
            color: white;
            font-size: 1.6rem;
            font-weight: 700;
            text-decoration: none;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .logo span {
            background: #f5c542;
            color: #0b1c3a;
            font-size: 0.9rem;
            padding: 4px 8px;
            border-radius: 30px;
            font-weight: 600;
        }

        .nav-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 18px;
            list-style: none;
        }

        .nav-links li a {
            color: #eef2f7;
            text-decoration: none;
            font-weight: 500;
            padding: 8px 4px;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
            font-size: 1.05rem;
        }

        .nav-links li a:hover {
            border-bottom-color: #f5c542;
            color: white;
        }

        /* banner */
        .banner {
            background: linear-gradient(145deg, #082032 0%, #1b3b5c 70%, #2b4c6f 100%);
            color: white;
            padding: 50px 20px;
            border-radius: 0 0 40px 40px;
            margin-bottom: 40px;
            text-align: center;
            box-shadow: 0 10px 25px rgba(0,40,80,0.3);
        }

        .banner h1 {
            font-size: 2.5rem;
            max-width: 900px;
            margin: 0 auto 20px;
            font-weight: 700;
            line-height: 1.3;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
        }

        .banner p {
            font-size: 1.3rem;
            opacity: 0.9;
            max-width: 800px;
            margin: 0 auto 25px;
        }

        .banner .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 18px;
        }

        .btn {
            background: #f5c542;
            color: #1e2a3a;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 700;
            text-decoration: none;
            transition: 0.2s;
            box-shadow: 0 6px 12px rgba(0,0,0,0.2);
            border: 2px solid transparent;
        }

        .btn-outline {
            background: transparent;
            border: 2px solid #f5c542;
            color: #f5c542;
        }

        .btn:hover {
            background: #ffd966;
            transform: translateY(-3px);
            box-shadow: 0 12px 20px rgba(0,0,0,0.25);
        }

        /* 卡片通用 */
        .section-title {
            font-size: 2rem;
            margin: 50px 0 30px;
            padding-bottom: 12px;
            border-bottom: 4px solid #f5c542;
            display: inline-block;
            font-weight: 700;
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin-bottom: 30px;
        }

        .card {
            background: white;
            border-radius: 24px;
            padding: 28px 22px;
            box-shadow: 0 10px 25px -8px rgba(0,20,40,0.15);
            transition: all 0.25s;
            border: 1px solid rgba(0,0,0,0.03);
        }

        .card:hover {
            transform: translateY(-6px);
            box-shadow: 0 25px 35px -10px rgba(0,45,80,0.25);
        }

        .card h3 {
            font-size: 1.6rem;
            margin-bottom: 16px;
            color: #0b2b44;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .card h3 i {
            font-size: 2rem;
        }

        .card p {
            color: #2e405b;
            margin-bottom: 10px;
        }

        strong, b {
            color: #0b4b7a;
            font-weight: 700;
            background: linear-gradient(90deg, #fff7e5, #fff0d4);
            padding: 0 4px;
            border-radius: 6px;
            font-weight: 800;
        }

        /* FAQ 区域 */
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 25px 35px;
            margin: 30px 0 40px;
        }

        .faq-item {
            background: #f2f6fe;
            border-radius: 30px;
            padding: 22px 28px;
            border-left: 8px solid #f5c542;
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
        }

        .faq-item p {
            margin-top: 8px;
            color: #1e3a5f;
        }

        .faq-item strong {
            background: transparent;
            padding: 0;
            font-size: 1.2rem;
            color: #0d2135;
        }

        /* 热门平台按钮组 */
        .platform-section {
            background: white;
            border-radius: 50px;
            padding: 35px 30px;
            margin: 40px 0 20px;
            box-shadow: 0 10px 30px rgba(0, 30, 60, 0.1);
            text-align: center;
        }

        .platform-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 18px;
            margin: 25px 0 10px;
        }

        .platform-btn {
            background: #1f3a5f;
            color: white !important;
            text-decoration: none;
            padding: 14px 28px;
            border-radius: 60px;
            font-weight: 700;
            font-size: 1.15rem;
            border: none;
            box-shadow: 0 8px 14px rgba(26, 47, 79, 0.4);
            transition: 0.15s;
            display: inline-block;
            min-width: 130px;
            border: 2px solid transparent;
        }

        .platform-btn:hover {
            background: #2e4e7a;
            transform: scale(1.02);
            box-shadow: 0 12px 18px rgba(0, 30, 70, 0.3);
            border-color: #f5c542;
            color: white;
        }

        /* 底部 */
        .footer-note {
            text-align: center;
            padding: 25px 0 15px;
            color: #5b6f88;
            border-top: 1px solid #d9e2ef;
            margin-top: 40px;
        }

        /* 移动端调整 */
        @media (max-width: 700px) {
            .banner h1 {
                font-size: 1.8rem;
            }
            .nav-container {
                flex-direction: column;
                align-items: stretch;
            }
            .nav-links {
                justify-content: center;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .platform-buttons a {
                width: 100%;
                max-width: 280px;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 关键词加粗突出 */
        .keyword-highlight {
            background-color: #fcf2e1;
            font-weight: 800;
            color: #003366;
        }

        /* 站内链接 */
        a[name] {
            scroll-margin-top: 80px;
        }
        :target {
            scroll-margin-top: 90px;
        }