* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }
        body {
            background-color: #f5f9fc;
            color: #1a2a3a;
            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(145deg, #0b1e2b, #0a1a24);
            padding: 1rem 0;
            /*position: sticky;*/
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #ffd966;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            letter-spacing: 1px;
        }
        .logo span {
            color: #ffffff;
            font-size: 1rem;
            margin-left: 8px;
            font-weight: 400;
        }
        .nav-menu {
            display: flex;
            gap: 1.8rem;
            flex-wrap: wrap;
            list-style: none;
        }
        .nav-menu a {
            color: #eef5f9;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .nav-menu a:hover {
            border-bottom-color: #ffd966;
            color: #ffd966;
        }
        /* 移动端菜单调整 */
        @media (max-width: 768px) {
            .nav-container {
                flex-direction: column;
                gap: 12px;
            }
            .nav-menu {
                justify-content: center;
                gap: 1.2rem;
            }
        }
        /* Banner */
        .hero-banner {
            background: radial-gradient(circle at 30% 40%, #1e4b62, #021017);
            color: white;
            padding: 3.5rem 0;
            margin-bottom: 2rem;
            border-radius: 0 0 40px 40px;
            text-align: center;
        }
        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 1rem;
            line-height: 1.2;
            text-shadow: 3px 3px 6px #00000040;
        }
        .hero-content .highlight {
            color: #ffd966;
            background-color: rgba(0,40,60,0.5);
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            display: inline-block;
            margin-bottom: 1rem;
            font-weight: 600;
        }
        .hero-content p {
            font-size: 1.4rem;
            max-width: 800px;
            margin: 0 auto;
            opacity: 0.95;
            background: rgba(0,0,0,0.3);
            padding: 10px 20px;
            border-radius: 60px;
        }
        /* 通用版块样式 */
        .section {
            background: white;
            border-radius: 32px;
            padding: 2rem 2.2rem;
            margin-bottom: 2.5rem;
            box-shadow: 0 12px 28px rgba(0, 30, 50, 0.08);
            transition: transform 0.2s;
        }
        .section:hover {
            box-shadow: 0 16px 32px rgba(0,60,100,0.12);
        }
        .section h2 {
            font-size: 2.2rem;
            border-left: 12px solid #ff7b29;
            padding-left: 1.5rem;
            margin-bottom: 1.8rem;
            color: #0a2e42;
            font-weight: 700;
        }
        .keywords-strong strong {
            background: #fff1cc;
            padding: 2px 6px;
            border-radius: 8px;
            font-weight: 700;
            color: #b45f06;
        }
        .grid-2, .grid-3 {
            display: grid;
            gap: 2rem;
            margin-top: 1.5rem;
        }
        .grid-2 { grid-template-columns: repeat(2,1fr); }
        .grid-3 { grid-template-columns: repeat(3,1fr); }
        @media (max-width: 768px) {
            .grid-2, .grid-3 { grid-template-columns: 1fr; }
        }
        .card {
            background: #f9fbfd;
            border-radius: 24px;
            padding: 1.5rem;
            border: 1px solid #dde7f0;
        }
        .card h3 {
            color: #0f3b54;
            font-size: 1.6rem;
            margin-bottom: 0.8rem;
        }
        .list-star {
            list-style: none;
        }
        .list-star li {
            margin: 0.8rem 0;
            padding-left: 1.8rem;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="%23ffb347"><path d="M12 2l3.09 6.26L22 9.27l-5 4.87L18.18 22 12 18.07 5.82 22 7 14.14 2 9.27l6.91-1.01L12 2z"/></svg>') left center no-repeat;
            background-size: 1.2rem;
        }
        .btn-link-group {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            justify-content: center;
            margin: 1.5rem 0;
        }
        .btn-app {
            background: #142f44;
            color: white;
            padding: 0.9rem 2rem;
            border-radius: 60px;
            font-size: 1.2rem;
            font-weight: 600;
            text-decoration: none;
            display: inline-block;
            border: 2px solid #ffb85c;
            transition: 0.15s;
            box-shadow: 0 6px 0 #0b1d2a;
        }
        .btn-app:hover {
            background: #1d455f;
            transform: translateY(-3px);
            box-shadow: 0 8px 0 #0b1d2a;
        }
        /* 常见问题区域 */
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
        }
        .faq-item {
            background: #eaf1f7;
            border-radius: 24px;
            padding: 1.5rem;
            border-left: 8px solid #ff9800;
        }
        .faq-item h4 {
            font-size: 1.4rem;
            margin-bottom: 0.8rem;
            color: #003153;
        }
        .faq-item p {
            color: #1f3a4b;
        }
        /* 底部热门平台按钮行 */
        .hot-platform {
            background: #122b39;
            border-radius: 48px 48px 24px 24px;
            padding: 2rem 2rem 2.5rem;
            margin-top: 1rem;
            color: white;
        }
        .hot-platform h3 {
            font-size: 2.2rem;
            text-align: center;
            margin-bottom: 2rem;
            color: #ffd966;
        }
        .platform-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
        }
        .platform-btn {
            background: #ffb347;
            color: #0b1e2b;
            padding: 1rem 2rem;
            border-radius: 60px;
            font-size: 1.4rem;
            font-weight: 800;
            text-decoration: none;
            min-width: 180px;
            text-align: center;
            border: 3px solid #ffe1a4;
            box-shadow: 0 6px 0 #b16200;
            transition: 0.1s ease;
        }
        .platform-btn:hover {
            background: #ffa01e;
            transform: translateY(-4px);
            box-shadow: 0 10px 0 #b16200;
        }
        /* 站内链接样式 */
        .internal-link {
            color: #d76f1f;
            font-weight: 600;
            text-decoration: none;
            border-bottom: 2px dotted #ffb85c;
        }
        .internal-link:hover {
            color: #b14500;
        }
        hr {
            margin: 2rem 0;
            border: 1px solid #c0d9e8;
        }
        footer {
            text-align: center;
            padding: 2rem 0 1rem;
            color: #3a5567;
        }
        /* 关键字加粗增强 */
        strong.keyword {
            background: #ffeed9;
            padding: 3px 8px;
            border-radius: 30px;
            font-size: 0.98em;
        }
        .word-count-hint {
            display: none; /* 仅用于提示字数，不显示给用户 */
        }