/* 原创配色体系：提取自图标并进行饱和度调优 */
        :root {
            --brand-main: #ff0055;     /* 活力玫红 */
            --brand-sub: #40c4ff;      /* 灵动天蓝 */
            --glass-bg: rgba(255, 255, 255, 0.85);
            --card-shadow: 0 20px 40px rgba(255, 0, 85, 0.08);
            --text-title: #1a1a1b;
            --text-body: #5f6368;
        }

        /* 基础重置 */
        * { margin: 0; padding: 0; box-sizing: border-box; -webkit-font-smoothing: antialiased; }
        body { 
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-title);
            background: #fff;
            overflow-x: hidden;
        }

        /* 原创动效背景 */
        .bg-blob {
            position: fixed;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255,0,85,0.05) 0%, rgba(255,255,255,0) 70%);
            top: -100px;
            right: -100px;
            z-index: -1;
        }

        /* 导航系统：浮动毛玻璃 */
        header {
            position: sticky;
            top: 20px;
            margin: 0 5%;
            padding: 12px 25px;
            background: var(--glass-bg);
            backdrop-filter: blur(15px);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 50px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            z-index: 1000;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }
        .logo-group { display: flex; align-items: center; text-decoration: none; }
        .logo-group img { width: 38px; height: 38px; border-radius: 10px; margin-right: 12px; }
        .logo-group span { font-size: 20px; font-weight: 800; color: var(--brand-main); letter-spacing: -0.5px; }

        .nav-menu a { text-decoration: none; color: var(--text-title); font-size: 14px; font-weight: 600; margin-left: 25px; transition: 0.3s; }
        .nav-menu a:hover { color: var(--brand-main); }

        /* 核心下载区：非对称布局 */
        .main-hero {
            display: flex;
            padding: 100px 10% 60px;
            min-height: 85vh;
            align-items: center;
        }

        .hero-info { flex: 1.2; padding-right: 50px; }
        .badge { 
            display: inline-block;
            padding: 6px 16px;
            background: #fff0f3;
            color: var(--brand-main);
            border-radius: 8px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 25px;
        }
        .hero-info h1 { font-size: 52px; line-height: 1.1; margin-bottom: 25px; font-weight: 900; }
        .hero-info h1 em { font-style: normal; color: var(--brand-sub); }
        .hero-info p { font-size: 18px; color: var(--text-body); max-width: 500px; margin-bottom: 45px; }

        .btn-group { display: flex; gap: 15px; flex-wrap: wrap; }
        .action-btn {
            position: relative;
            padding: 18px 35px;
            border-radius: 16px;
            font-size: 16px;
            font-weight: 700;
            text-decoration: none;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            overflow: hidden;
            text-align: center;
        }
        .btn-main { background: var(--brand-main); color: #fff; box-shadow: 0 15px 30px rgba(255, 0, 85, 0.2); }
        .btn-dark { background: #121212; color: #fff; }
        .action-btn:hover { transform: translateY(-5px); box-shadow: 0 20px 40px rgba(0,0,0,0.15); }

        /* 手机端偏移修复的核心容器 */
        .hero-visual {
            flex: 0.8;
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .phone-frame {
            width: 290px;
            border-radius: 45px;
            box-shadow: 0 30px 60px rgba(0,0,0,0.12);
            transition: 0.5s;
        }
        .phone-frame:hover { transform: scale(1.02) rotate(-2deg); }

        /* 功能矩阵 */
        .matrix-section { padding: 100px 10%; background: #fafafa; }
        .matrix-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .matrix-item {
            background: #fff;
            padding: 40px 30px;
            border-radius: 24px;
            transition: 0.3s;
            border: 1px solid #eee;
        }
        .matrix-item:hover { border-color: var(--brand-main); box-shadow: var(--card-shadow); }
        .matrix-item h3 { margin-top: 20px; font-size: 20px; margin-bottom: 12px; }
        .matrix-item p { font-size: 14px; color: var(--text-body); }

        /* 原创FAQ与日志板块 */
        .content-split { padding: 100px 10%; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
        .content-block h2 { font-size: 32px; margin-bottom: 40px; }
        .accordion-item { border-bottom: 1px solid #eee; padding: 20px 0; }
        .accordion-item strong { display: block; margin-bottom: 10px; color: var(--brand-main); }
        .log-item { display: flex; gap: 20px; margin-bottom: 25px; }
        .log-v { font-weight: 800; color: var(--brand-sub); min-width: 60px; }

        footer { padding: 60px 10%; background: #121212; color: #666; text-align: center; font-size: 14px; }

        /* 移动端极致适配：解决向右偏移与排版优化 */
        @media (max-width: 900px) {
            header { margin: 15px 5%; }
            .nav-menu { display: none; }
            .main-hero { 
                flex-direction: column; 
                padding: 60px 25px; 
                text-align: center; 
            }
            .hero-info { padding-right: 0; margin-bottom: 60px; }
            .hero-info h1 { font-size: 36px; }
            .btn-group { justify-content: center; }
            .action-btn { width: 100%; max-width: 280px; }
            
            /* 偏移修复逻辑 */
            .hero-visual { 
                width: 100%; 
                margin: 0 auto; 
                justify-content: center; 
                display: flex;
            }
            .phone-frame { width: 240px; margin: 0 auto; } /* 消除偏心，强制物理居中 */

            .matrix-grid { grid-template-columns: 1fr 1fr; }
            .content-split { grid-template-columns: 1fr; gap: 40px; }
        }