* { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif; background: #f5f5f5; color: #333; }
        a { text-decoration: none; color: inherit; }
        img { max-width: 100%; }
        ul { list-style: none; }

        .site-header { background: #3FB3FF; box-shadow: 0 2px 20px rgba(0,0,0,0.08); position: sticky; top: 0; z-index: 100; }
        .header-container { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 0 20px; height: 72px; }
        .logo { display: flex; align-items: center; gap: 8px; height: 72px; }
        .logo img { height: 44px; width: auto; display: block; flex-shrink: 0; }
        .logo-img-text { display: flex; flex-direction: column; justify-content: center; }
        .logo-title { font-size: 20px; font-weight: 700; color: #ff6b35; }
        .logo-tagline { font-size: 12px; color: #999; }
        .main-nav { display: flex; align-items: center; gap: 8px; }
        .main-nav a { padding: 8px 16px; font-size: 15px; color: #666; border-radius: 20px; transition: all 0.3s; }
        .main-nav a:hover { color: #ff6b35; }
        .main-nav a.active { background: #fff7f2; color: #ff6b35; font-weight: 600; }
        .menu-toggle { display: none; width: 36px; height: 36px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; margin-left: auto; }
        .menu-toggle span { display: block; width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: all 0.3s; }
        .menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .menu-toggle.active span:nth-child(2) { opacity: 0; }
        .menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        .breadcrumb-wrap { max-width: 1200px; margin: 0 auto; padding: 12px 20px; }
        .breadcrumb { padding: 10px 16px; background: #fff; border-radius: 8px; font-size: 14px; color: #666; }
        .breadcrumb a { color: #ff6b35; }
        .breadcrumb span { margin: 0 6px; color: #ccc; }

        .content-wrap { max-width: 1200px; margin: 0 auto; padding: 0 20px 40px; display: flex; flex-wrap: nowrap; gap: 20px; align-items: flex-start; }
        .sidebar-left { width: 260px; flex-shrink: 0; }
        .app-card { background: #fff; border-radius: 16px; padding: 20px; text-align: center; box-shadow: 0 2px 12px rgba(0,0,0,0.06); margin-bottom: 16px; }
        .app-card-logo { width: 56px; height: 56px; border-radius: 12px; margin: 0 auto 12px; display: block; }
        .app-card-title { font-size: 18px; font-weight: 700; color: #333; margin-bottom: 4px; }
        .app-card-sub { font-size: 13px; color: #ff6b35; margin-bottom: 16px; font-weight: 600; }
        .app-card-qr { width: 140px; height: 140px; margin: 0 auto 16px; display: block; border-radius: 8px; }
        .app-card-btns { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
        .app-card-btn { flex: 1; min-width: 90px; padding: 8px 4px; border-radius: 20px; font-size: 12px; font-weight: 600; text-align: center; }
        .app-card-btn-android { background: linear-gradient(135deg, #ff6b35, #ff8c42); color: #fff; }
        .app-card-btn-ios { background: #333; color: #fff; }
        .related-card { background: #fff; border-radius: 16px; padding: 20px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); margin-bottom: 16px; }
        .related-card-title { font-size: 18px; font-weight: 700; color: #333; margin-bottom: 14px; text-align: center; }
        .related-list { list-style: none; padding: 0; margin: 0; }
        .related-list li { margin-bottom: 12px; padding-bottom: 12px; border-bottom: 1px dashed #eee; line-height: 1.5; }
        .related-list li:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
        .related-list a { color: #555; font-size: 14px; text-decoration: none; display: block; transition: color 0.2s; }
        .related-list a:hover { color: #ff6b35; }


        .article-main { flex: 1; min-width: 0; }
        .article-card { background: #fff; border-radius: 16px; padding: 24px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
        .article-title { font-size: 22px; color: #333; margin-bottom: 16px; border-bottom: 2px solid #ff6b35; padding-bottom: 14px; line-height: 1.4; font-weight: 700; }
        .article-meta { font-size: 13px; color: #999; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid #f0f0f0; display: flex; gap: 16px; }
        .article-content h2 { font-size: 18px; color: #333; margin: 24px 0 12px; font-weight: 700; border-left: 4px solid #ff6b35; padding-left: 12px; }
        .article-content p { font-size: 15px; line-height: 1.9; color: #444; margin-bottom: 16px; text-indent: 2em; }
        .article-content ul { margin: 0 0 16px 2em; padding: 0; }
        .article-content ul li { font-size: 15px; line-height: 1.9; color: #444; margin-bottom: 8px; list-style: disc; }
        .article-content ul li strong { color: #333; }
        .article-content p strong { color: #333; }
        .article-content p a { color: #ff6b35; }

        @media (max-width: 900px) {
            .site-header { position: static; }
            .header-container { flex-wrap: nowrap; height: auto; padding: 10px 12px; gap: 8px; }
            .logo-img-text { display: none; }
            .main-nav { overflow-x: auto; gap: 4px; flex-wrap: nowrap; scrollbar-width: none; }
            .main-nav a { padding: 6px 10px; font-size: 12px; white-space: nowrap; }
            .content-wrap { flex-wrap: wrap; }
            .article-main { width: 100%; }
        }
        @media(max-width:768px){.menu-toggle{display:flex!important}.main-nav{display:none}.header-container{height:56px;padding:0 16px}.logo img{height:36px}.logo-img-text{display:none}.content-wrap{padding:12px 16px 40px}.article-main{width:100%}.article-card{padding:16px}}
        @media (max-width: 1024px) { .sidebar-left, .sidebar-right { display: none; } .content-wrap { flex-wrap: wrap; } .article-main { width: 100%; } }
        @media (max-width: 768px) { .main-nav { display: none; } .breadcrumb-wrap { padding: 8px 12px; } .article-card { padding: 16px; } .article-title { font-size: 18px; } }

        .site-footer { background: #1a1a2e; color: #fff; padding: 60px 0 30px; width: 100%; }
        .footer-container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .footer-row { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 30px; }
        .footer-col h4 { font-size: 16px; color: #fff; margin-bottom: 20px; }
        .footer-col a { display: block; font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 12px; transition: color 0.3s; }
        .footer-col a:hover { color: #ff6b35; }
        .footer-about p { font-size: 13px; color: rgba(255,255,255,0.6); line-height: 1.8; margin-top: 10px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 30px; text-align: center; font-size: 13px; color: rgba(255,255,255,0.4); line-height: 2; }
        .download-bar { display: flex; position: fixed; bottom: 0; left: 0; right: 0; background: #3FB3FF; padding: 8px 16px; z-index: 900; box-shadow: 0 -2px 10px rgba(0,0,0,.15); justify-content: space-between; align-items: center; border-radius: 1rem; }
        .download-bar-left { display: flex; align-items: center; gap: 10px; color: #fff; font-size: 14px; font-weight: 600; }
        .download-bar-left img { height: 40px; width: auto; }
        .download-bar-right { display: flex; gap: 10px; }
        .bar-tab { font-size: 0.85rem; font-weight: 600; color: #ff3115; text-decoration: none; padding: 0.35rem 0.7rem; border: 1px solid transparent; border-radius: 1rem; background: #fff; }
        /* 移动端抽屉式导航 */
        .mobile-nav { display: none; position: fixed; top: 0; left: 0; width: 280px; height: 100vh; background: #fff; box-shadow: 4px 0 20px rgba(0,0,0,0.15); z-index: 999; padding: 80px 20px 20px; transform: translateX(-100%); transition: transform 0.3s; }
        .mobile-nav.open { display: block; transform: translateX(0); }
        .mobile-nav-close { position: absolute; top: 20px; right: 20px; width: 32px; height: 32px; background: none; border: none; font-size: 28px; cursor: pointer; color: #666; }
        .mobile-nav a { display: block; padding: 14px 0; font-size: 16px; color: #333; border-bottom: 1px solid #eee; }
        .mobile-nav a.active { color: #ff6b35; font-weight: 600; }
        .mobile-nav-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 998; }
        .mobile-nav-overlay.show { display: block; }
        @media (min-width: 901px) { .download-bar { display: none !important; } }
        @media (max-width: 900px) { .download-bar { display: flex !important; } }
        @media (max-width: 900px) { body { padding-bottom: 78px; } .content-wrap { padding-bottom: 96px; } .site-footer { display: none; } }