 <!-- 基础样式：极简、高速、创意卡片 -->
        /* 全局重置 —— 轻量、快速 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: #f5f7fc;
            color: #1e1f2a;
            line-height: 1.5;
            -webkit-font-smoothing: antialiased;
        }

        /* 极简容器 —— 控制宽度，呼吸感 */
        .wrapper {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ----- 导航栏 (首页+下载+教程+FAQ+订阅说明) ----- */
        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 18px 0;
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .logo-area {
            font-weight: 700;
            font-size: 1.5rem;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #0b1c3a 0%, #2a5c9e 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .logo-area span {
            font-weight: 400;
            font-size: 0.9rem;
            color: #5e6f8d;
            margin-left: 6px;
            background: none;
            -webkit-background-clip: unset;
            background-clip: unset;
            color: #5e6f8d;
        }

        .nav-links {
            display: flex;
            gap: 28px;
            font-weight: 500;
        }
        .nav-links a {
            text-decoration: none;
            color: #2c3e50;
            font-size: 1rem;
            transition: color 0.15s;
        }
        .nav-links a:hover {
            color: #1e5fd9;
        }
        .nav-links a.active {
            color: #1e5fd9;
            font-weight: 600;
            border-bottom: 2px solid #1e5fd9;
            padding-bottom: 4px;
        }

        /* 明显的返回下载按钮 (导航右侧固定下载入口) */
        .nav-download-btn {
            background: #1e5fd9;
            color: white !important;
            padding: 10px 22px;
            border-radius: 60px;
            font-weight: 600;
            font-size: 0.95rem;
            box-shadow: 0 6px 14px rgba(30, 95, 217, 0.25);
            transition: all 0.2s;
            border: none;
            display: inline-block;
        }
        .nav-download-btn:hover {
            background: #154bb5;
            transform: translateY(-1px);
            box-shadow: 0 10px 20px rgba(30, 95, 217, 0.3);
        }

        /* 顶部极简介绍 —— 不超过两行 */
        .hero {
            margin: 36px 0 32px;
        }
        .hero h1 {
            font-size: 2.5rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: #0a1a2b;
            max-width: 900px;
        }
        .hero .sub-definition {
            font-size: 1.2rem;
            color: #406180;
            margin-top: 12px;
            font-weight: 400;
            max-width: 720px;
            border-left: 4px solid #1e5fd9;
            padding-left: 20px;
        }

        /* 三大入口卡片 (创意核心) */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin: 48px 0 40px;
        }

        .entry-card {
            background: #ffffff;
            border-radius: 32px;
            padding: 28px 22px 26px;
            box-shadow: 0 15px 30px -8px rgba(0,20,50,0.08);
            transition: all 0.25s ease;
            border: 1px solid rgba(255,255,255,0.5);
            backdrop-filter: blur(2px);
            display: flex;
            flex-direction: column;
        }
        .entry-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 25px 40px -12px rgba(30,95,217,0.15);
            border-color: #d0e0ff;
        }

        .card-icon {
            font-size: 2.8rem;
            margin-bottom: 16px;
        }
        .entry-card h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .card-desc {
            color: #4a5c72;
            margin-bottom: 24px;
            font-size: 1rem;
            line-height: 1.4;
            flex: 1;
        }
        .card-btn {
            background: transparent;
            border: 1.5px solid #1e5fd9;
            color: #1e5fd9;
            padding: 12px 0;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            text-align: center;
            text-decoration: none;
            transition: 0.15s;
            display: inline-block;
            width: 100%;
        }
        .card-btn.download {
            background: #1e5fd9;
            color: white;
            border: none;
            box-shadow: 0 4px 10px rgba(30,95,217,0.2);
        }
        .card-btn:hover {
            background: #1e5fd9;
            color: white;
        }
        .card-btn.download:hover {
            background: #0f4ab8;
        }

        /* 使用流程图 —— 结构化 + 创意 (下载→安装→导入订阅→连接成功) */
        .flow-section {
            margin: 40px 0 50px;
        }
        .section-label {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            margin-bottom: 24px;
        }
        .section-label h2 {
            font-size: 1.8rem;
            font-weight: 650;
            color: #13294b;
        }
        .badge-new {
            background: #eef4ff;
            color: #1e5fd9;
            padding: 6px 16px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.9rem;
        }

        .flow-steps {
            display: flex;
            align-items: stretch;
            justify-content: space-between;
            background: #ffffffd6;
            backdrop-filter: blur(4px);
            border-radius: 60px;
            padding: 22px 30px;
            box-shadow: 0 8px 18px rgba(0,0,0,0.02);
            border: 1px solid rgba(30,95,217,0.08);
        }

        .step-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .step-num {
            width: 48px;
            height: 48px;
            background: #1e5fd9;
            color: white;
            border-radius: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.4rem;
            box-shadow: 0 8px 14px rgba(30,95,217,0.2);
        }
        .step-text {
            font-weight: 600;
            font-size: 1.2rem;
            color: #1a2b44;
        }
        .step-arrow {
            font-size: 2rem;
            color: #b0c8f0;
            margin: 0 6px;
        }

        /* 最新更新模块 (时间信号 + 版本变化) */
        .update-module {
            background: linear-gradient(105deg, #ffffff 0%, #f9fcff 100%);
            border-radius: 28px;
            padding: 28px 32px;
            margin: 36px 0 30px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            border: 1px solid #e1e9f5;
            box-shadow: 0 6px 16px rgba(0,0,0,0.02);
        }
        .update-left h3 {
            font-size: 1.6rem;
            font-weight: 650;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .update-left h3 i {
            font-size: 2rem;
        }
        .version-tag {
            background: #0a1a2b;
            color: white;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            margin-left: 16px;
        }
        .update-desc {
            margin-top: 12px;
            color: #2e4b6e;
            font-size: 1.1rem;
        }
        .update-right {
            background: #eef2fa;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 500;
            color: #1e5fd9;
        }

        /* FAQ入口 —— 只做入口不展开内容 */
        .faq-entry {
            margin: 30px 0 50px;
            background: #ffffff;
            border-radius: 24px;
            padding: 22px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-left: 8px solid #1e5fd9;
            box-shadow: 0 8px 18px rgba(0,0,0,0.02);
        }
        .faq-entry-left {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .faq-icon {
            font-size: 2.8rem;
        }
        .faq-text h4 {
            font-size: 1.8rem;
            font-weight: 650;
            color: #101d33;
        }
        .faq-text p {
            color: #4f658d;
        }
        .faq-arrow-btn {
            background: #1e5fd9;
            color: white;
            padding: 16px 36px;
            border-radius: 48px;
            font-weight: 600;
            text-decoration: none;
            font-size: 1.2rem;
            transition: 0.15s;
            box-shadow: 0 10px 18px rgba(30,95,217,0.2);
        }
        .faq-arrow-btn:hover {
            background: #0f4ab8;
        }

        /* 明显返回下载按钮 (页面底部浮动 + 固定悬浮) */
        .fixed-download {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: #1e5fd9;
            color: white;
            width: 64px;
            height: 64px;
            border-radius: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 12px 28px rgba(30,95,217,0.4);
            text-decoration: none;
            font-size: 28px;
            font-weight: 700;
            transition: 0.2s;
            border: 2px solid rgba(255,255,255,0.3);
        }
        .fixed-download:hover {
            transform: scale(1.08);
            background: #0f4ab8;
            bottom: 32px;
        }

        /* 底部 */
        .footer {
            margin-top: 50px;
            padding: 28px 0;
            border-top: 1px solid rgba(0,0,0,0.05);
            color: #5c6f8c;
            display: flex;
            justify-content: space-between;
            font-size: 0.9rem;
        }

        /* 响应式 */
        @media (max-width: 720px) {
            .nav-bar {
                flex-direction: column;
                gap: 15px;
            }
            .nav-links {
                gap: 18px;
                flex-wrap: wrap;
                justify-content: center;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .flow-steps {
                flex-direction: column;
                align-items: flex-start;
                gap: 22px;
                border-radius: 32px;
            }
            .step-arrow {
                display: none;
            }
            .update-module {
                flex-direction: column;
                align-items: flex-start;
                gap: 18px;
            }
            .faq-entry {
                flex-direction: column;
                align-items: flex-start;
                gap: 18px;
            }
            .fixed-download {
                width: 56px;
                height: 56px;
                bottom: 20px;
                right: 20px;
            }
        }

        /* 辅助 */
        .text-accent {
            color: #1e5fd9;
        }
        .no-style-link {
            text-decoration: none;
            color: inherit;
        }
		/* ----- 平台号召区域 (创意轻量) ----- */
.platform-cta {
    margin: 48px 0 30px;
    background: linear-gradient(145deg, #ffffff 0%, #f2f7ff 100%);
    border-radius: 48px;
    padding: 6px;
    border: 1px solid rgba(30, 95, 217, 0.15);
    box-shadow: 0 25px 35px -12px rgba(0, 35, 70, 0.08);
}

.cta-grid {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(255,255,255,0.75);
    backdrop-filter: blur(4px);
    border-radius: 42px;
    padding: 32px 40px;
}

.cta-content {
    flex: 2;
}

.cta-badge {
    background: #1e5fd9;
    color: white;
    font-weight: 600;
    font-size: 0.85rem;
    padding: 6px 16px;
    border-radius: 40px;
    display: inline-block;
    margin-bottom: 18px;
    letter-spacing: 0.3px;
}

.cta-content h3 {
    font-size: 2.1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #0a1f33;
    margin-bottom: 12px;
    line-height: 1.2;
}

.cta-desc {
    font-size: 1.1rem;
    color: #2e4e72;
    max-width: 550px;
    margin-bottom: 28px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.cta-btn {
    padding: 14px 30px;
    border-radius: 60px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 0.18s;
    font-size: 1.05rem;
}
.cta-btn.primary {
    background: #1e5fd9;
    color: white;
    box-shadow: 0 12px 20px -6px rgba(30,95,217,0.3);
    border: 1px solid #4175e0;
}
.cta-btn.primary:hover {
    background: #0f4ab8;
    transform: scale(1.02);
}
.cta-btn.secondary {
    background: transparent;
    border: 1.5px solid #1e5fd9;
    color: #1e5fd9;
}
.cta-btn.secondary:hover {
    background: rgba(30,95,217,0.06);
}

.cta-meta {
    display: flex;
    gap: 28px;
    color: #43668c;
    font-weight: 500;
    font-size: 0.95rem;
}
.cta-meta span::before {
    content: "•";
    margin-right: 10px;
    color: #1e5fd9;
    font-weight: bold;
}
.cta-meta span:first-child::before {
    display: none;
}

.cta-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}
.visual-rocket {
    font-size: 6.5rem;
    line-height: 1;
    filter: drop-shadow(0 10px 12px rgba(0,20,50,0.1));
    transform: rotate(5deg);
}
.visual-dots {
    position: absolute;
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, #a0c4ff 1.5px, transparent 2px);
    background-size: 18px 18px;
    opacity: 0.3;
    right: 0;
    bottom: 0;
}

/* 移动端适配号召区域 */
@media (max-width: 720px) {
    .cta-grid {
        flex-direction: column;
        padding: 28px 22px;
    }
    .cta-content h3 {
        font-size: 1.8rem;
    }
    .cta-visual {
        width: 100%;
        justify-content: flex-start;
    }
    .visual-rocket {
        font-size: 5rem;
    }
}