.hero { 
            padding: 180px 0 100px; 
            position: relative; 
            background: radial-gradient(circle at 30% 30%, #fffcf0 0%, #fff 70%); 
            overflow: hidden; 
        }
        .hero-bg-grid {
            position: absolute; width: 200%; height: 200%; top: -50%; left: -50%;
            background-image: radial-gradient(rgba(246, 194, 76, 0.1) 1px, transparent 1px);
            background-size: 30px 30px;
            transform: perspective(600px) rotateX(45deg);
            z-index: 0; pointer-events: none;
            opacity: 0.6;
        }

        .hero-content { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
        
        .hero-text h1 { font-size: 3.8rem; line-height: 1.2; margin-bottom: 24px; color: var(--text-dark); letter-spacing: -1.5px; }
        .hero-text p { font-size: 1.2rem; color: var(--text-sub); margin: 0 auto 40px; line-height: 1.8; }
        .hero-text>div{display: flex; gap: 16px; flex-wrap: wrap; justify-content: flex-start;}
        .trust-badges { display: flex; align-items: center; gap: 20px; margin-top: 40px; opacity: 0.8; }
        .trust-item { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; font-weight: 600; color: #555; }
        .trust-item i { color: #28a745; }

        /* 3D 悬浮视觉 - 盾牌防御 */
        .hero-visual-wrapper {
            position: relative; height: 500px; display: flex; align-items: center; justify-content: center; perspective: 1200px;
        }
        .visual-stack {
            position: relative; width: 300px; height: 360px; transform-style: preserve-3d;
            transform: rotateY(-15deg) rotateX(10deg); animation: float-3d 6s ease-in-out infinite;
        }
        @keyframes float-3d { 0%, 100% { transform: rotateY(-15deg) rotateX(10deg) translateY(0); } 50% { transform: rotateY(-15deg) rotateX(10deg) translateY(-20px); } }

        .layer-card {
            position: absolute; top: 0; left: 0; width: 100%; height: 100%; border-radius: 30px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1); border: 2px solid #fff;
            background: rgba(255,255,255,0.9); backdrop-filter: blur(10px);
            display: flex; flex-direction: column; align-items: center; justify-content: center; transition: transform 0.5s;
        }
        
        /* 底层：漏洞与威胁 */
        .layer-threats { 
            transform: translateZ(-80px) translateX(50px); 
            background: linear-gradient(135deg, #2b2b2b 0%, #1a1a1a 100%);
            border-color: #444; opacity: 0.8;
        }
        .threat-icon { color: #ff4757; font-size: 2rem; animation: shake 3s infinite; }
        @keyframes shake { 0%, 100% { transform: translateX(0); } 10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); } 20%, 40%, 60%, 80% { transform: translateX(5px); } }
        
        /* 中层：APK核心 */
        .layer-apk {
            transform: translateZ(0px);
            background: #fff;
            z-index: 2;
            box-shadow: 0 20px 50px rgba(0,0,0,0.15);
        }
        .apk-code { width: 80%; height: 6px; background: #eee; margin: 8px 0; border-radius: 3px; }
        
        /* 顶层：安全盾牌 */
        .layer-shield {
            transform: translateZ(100px) translateX(-50px);
            background: linear-gradient(135deg, rgba(246, 194, 76, 0.2) 0%, rgba(255,255,255,0.95) 100%);
            border: 2px solid rgba(246, 194, 76, 0.5);
            z-index: 3;
            box-shadow: 0 0 40px rgba(246, 194, 76, 0.4);
        }
        .shield-icon { font-size: 6rem; color: var(--primary); filter: drop-shadow(0 10px 20px rgba(246, 194, 76, 0.5)); animation: pulse-glow 2s infinite; }
        @keyframes pulse-glow { 0% { transform: scale(1); filter: drop-shadow(0 0 0 rgba(246, 194, 76, 0)); } 50% { transform: scale(1.05); filter: drop-shadow(0 0 30px rgba(246, 194, 76, 0.6)); } 100% { transform: scale(1); filter: drop-shadow(0 0 0 rgba(246, 194, 76, 0)); } }

        /* 连接扫描线 */
        .scan-beam {
            position: absolute; width: 100%; height: 10px; background: var(--primary);
            box-shadow: 0 0 20px var(--primary);
            opacity: 0.5; top: 10%; z-index: 4;
            animation: scan-move 3s linear infinite;
        }
        @keyframes scan-move { 0% { top: 0; opacity: 0; } 50% { opacity: 0.8; } 100% { top: 100%; opacity: 0; } }

        /* 
         * ==========================================================================
         * === [核心特性] ===
         * ==========================================================================
         */
        #features { background: var(--bg-white); }
        .feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
        .feature-card { text-align:center; padding: 40px 30px; border-radius: 16px; transition: var(--transition); border: 1px solid #f0f0f0; box-shadow: var(--shadow-sm); background: #fff; }
        .feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: rgba(var(--primary-rgb), 0.3); }
        .feature-icon-box { width: 64px; height: 64px; background: var(--primary-light); border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 24px; color: var(--primary-dark); font-size: 1.5rem; transition: var(--transition); }
        .feature-card:hover .feature-icon-box { background: var(--primary); color: var(--bg-white); transform: scale(1.1); }

        /* Stats */
        .stats { padding: 60px 0; background: var(--bg-white); border-top: 1px solid #f9f9f9; border-bottom: 1px solid #f9f9f9; }
        .stats-grid { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 40px; }
        .stat-item { text-align: center; flex: 1; min-width: 150px; }
        .stat-number { font-size: 3rem; font-weight: 800; color: var(--primary); background: -webkit-linear-gradient(#f6c24c, #d6a32b); -webkit-background-clip: text; -webkit-text-fill-color: transparent; font-family: 'Roboto', sans-serif; display: block; }
        .stat-label { font-size: 0.9rem; font-weight: 600; color: var(--text-sub); text-transform: uppercase; letter-spacing: 1px; margin-top: 5px; }

        /* 
         * ==========================================================================
         * === [演示模块] ===
         * ==========================================================================
         */
        #highlights { background: linear-gradient(180deg, #ffffff 0%, #fcfcfc 100%); }
        .feature-row { display: flex; align-items: center; gap: 60px; margin-bottom: 120px; opacity: 0; transform: translateY(40px); transition: all 0.8s ease-out; }
        .feature-row.visible { opacity: 1; transform: translateY(0); }
        .feature-row:nth-child(even) { flex-direction: row-reverse; }
        
        .feature-text { flex: 1; min-width: 300px; }
        .feature-text h2 { font-size: 2rem; margin-bottom: 20px; line-height: 1.3; color: var(--text-dark); }
        .feature-desc { color: var(--text-sub); font-size: 1.05rem; margin: 0 auto 30px; max-width:580px; text-align:left; }
        .check-list li { margin-bottom: 12px; display: flex; align-items: center; font-weight: 500; color: var(--text-main); }
        .check-list li i { margin-right: 12px; color: var(--primary); background: var(--bg-white); border: 1px solid var(--primary); width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.8rem; flex-shrink: 0; }
        .feature-tag { display: inline-block; padding: 6px 14px; background: rgba(var(--primary-rgb), 0.15); color: #b38f00; border-radius: 6px; font-size: 0.8rem; font-weight: 700; margin-bottom: 16px; text-transform: uppercase; }

        .feature-mockup { flex: 1; display: flex; justify-content: center; align-items: center; width: 100%; perspective: 1000px; }
        .mockup-card { 
            background: var(--bg-white); border-radius: 20px; padding: 30px; 
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08); width: 100%; max-width: 480px; 
            border: 1px solid #f0f0f0; transition: transform 0.4s ease, box-shadow 0.4s ease; 
            position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: center; min-height: 340px;
        }
        .feature-row:hover .mockup-card { transform: translateY(-5px); box-shadow: 0 30px 70px rgba(0, 0, 0, 0.12); }

        /* [Demo 1] 病毒查杀 - 扫描动画 */
        .scan-wrapper { width: 100%; position: relative; padding: 20px; }
        .scan-status { text-align: center; margin-bottom: 20px; }
        .scan-status h3 { font-size: 1.5rem; margin-bottom: 5px; color: #ff4757; transition: 0.5s; }
        .feature-row:hover .scan-status h3 { color: #28a745; }
        .scan-bar-bg { width: 100%; height: 10px; background: #eee; border-radius: 5px; overflow: hidden; }
        .scan-bar-fill { width: 0%; height: 100%; background: #ff4757; border-radius: 5px; transition: width 2s ease-in-out, background 0.5s; }
        .feature-row:hover .scan-bar-fill { width: 100%; background: #28a745; }
        
        .bug-list { margin-top: 20px; }
        .bug-item { display: flex; justify-content: space-between; padding: 12px; background: #fff0f0; border-radius: 8px; margin-bottom: 10px; color: #ff4757; transition: 0.5s; }
        .feature-row:hover .bug-item { background: #f0fff4; color: #28a745; transform: translateX(10px); opacity: 0.5; }
        .feature-row:hover .bug-item i::before { content: "\f00c"; } /* Change to Checkmark */

        /* [Demo 2] 代码混淆对比 */
        .code-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; height: 100%; }
        .code-block { background: #2b2b2b; padding: 15px; border-radius: 10px; font-family: monospace; font-size: 0.75rem; color: #a9b7c6; overflow: hidden; position: relative; }
        .code-title { position: absolute; top: 0; left: 0; width: 100%; padding: 5px 10px; font-size: 0.7rem; font-weight: bold; }
        .code-title.unsafe { background: rgba(255, 71, 87, 0.2); color: #ff4757; }
        .code-title.safe { background: rgba(40, 167, 69, 0.2); color: #28a745; }
        .code-content { margin-top: 20px; line-height: 1.5; white-space:inherit; word-break: break-all; }
        
        /* [Demo 3] 签名校验 */
        .tamper-demo { text-align: center; position: relative; padding: 40px 0; }
        .app-icon-lg { width: 80px; height: 80px; background: var(--primary); border-radius: 20px; margin: 0 auto 20px; display: flex; align-items: center; justify-content: center; font-size: 2.5rem; color: #fff; position: relative; }
        .hacker-hand { position: absolute; right: 20px; top: 40px; font-size: 3rem; color: #333; opacity: 0; transition: 0.5s; transform: translateX(50px); }
        .feature-row:hover .hacker-hand { opacity: 1; transform: translateX(0); }
        .shield-overlay { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%) scale(0); width: 120px; height: 140px; background: rgba(246, 194, 76, 0.9); border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 3rem; transition: 0.5s 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275); opacity: 0; }
        .feature-row:hover .shield-overlay { transform: translate(-50%, -50%) scale(1); opacity: 1; }
        .tamper-status { margin-top: 20px; font-weight: bold; color: #333; }

        /* Pricing */
        .pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; align-items: center; max-width: 1000px; margin: 0 auto; }
        .price-card { background: var(--bg-white); border-radius: 16px; padding: 40px 30px; text-align: center; border: 1px solid #eee; transition: var(--transition); position: relative; overflow: hidden; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; }
        .price-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-md); border-color: rgba(var(--primary-rgb), 0.3); z-index: 5; }
        .price-card.popular { border: 2px solid var(--primary); transform: scale(1.05); z-index: 2; box-shadow: var(--shadow-md); }
        .price-card.popular:hover { transform: scale(1.08); }
        .ribbon { position: absolute; top: 12px; right: -35px; background: var(--primary-gradient); width: 120px; padding: 5px 0; text-align: center; transform: rotate(45deg); font-size: 0.8rem; font-weight: bold; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
        .price-num { font-size: 2.5rem; font-weight: 800; line-height: 1; color: var(--text-dark); margin: 20px 0 5px; font-family: 'Roboto', sans-serif; }
        .price-unit { font-size: 0.95rem; color: var(--text-sub); margin-bottom: 25px; display: block; }
        .price-list { text-align: left; margin-bottom: 30px; flex: 1; }
        .price-list li { margin-bottom: 14px; color: var(--text-sub); font-size: 0.9rem; display: flex; align-items: center; }
        .price-list li i { color: #27c93f; margin-right: 10px; font-size: 0.8rem; }
        .price-list li i.fa-xmark { color: #ccc; }

        /* Footer & CTA */
        .cta-section { padding: 100px 0; background: #111; color: #fff; position: relative; overflow: hidden; text-align: center; }
        .btn-glow { background: var(--primary); color: #000; padding: 18px 56px; font-size: 1.1rem; font-weight: 800; border-radius: 50px; box-shadow: 0 0 25px rgba(var(--primary-rgb), 0.5); border: none; cursor: pointer; z-index: 10; position: relative; width: auto; transition: all 0.3s; }
        .btn-glow:hover { transform: translateY(-3px) scale(1.05); background: #fff; box-shadow: 0 0 40px rgba(var(--primary-rgb), 0.8); }
        .faq-item { background: var(--bg-white); border: 1px solid #f0f0f0; border-radius: 8px; margin-bottom: 16px; }
        .faq-header { padding: 18px 20px; display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-weight: 600; font-size: 1rem; }
        .faq-body { height: 0; overflow: hidden; transition: height 0.3s ease-out; padding: 0 20px; color: var(--text-sub); font-size: 0.95rem; }
        footer { background: #1a1f24; color: #fff; padding: 80px 0 30px; }
        .footer-logo { color: #fff; font-size: 1.5rem; font-weight: 800; margin-bottom: 20px; display: inline-flex; align-items: center; gap: 10px; }
        .footer-links a { color: #889097; transition: 0.3s; font-size: 0.95rem; display: block; margin-bottom: 10px; }
        .footer-links a:hover { color: var(--primary); padding-left: 5px; }

        /* 移动端适配 */
        @media (max-width: 992px) {
            .hero-content { grid-template-columns: 1fr; text-align: center; gap: 40px; }
            .hero-text h1 { font-size: 2.8rem; }
            .hero-visual-wrapper { display: none; }
            .hero-text>div{justify-content:center;!important}
            .trust-badges{justify-content:center}
            .feature-row, .feature-row:nth-child(even) { flex-direction: column; text-align: center; gap: 40px; margin-bottom: 80px; }
            .feature-text { min-width: auto; width: 100%; }
            .mockup-card { width: 100%; }
            .pricing-grid { grid-template-columns: 1fr; max-width: 400px; gap: 40px; }
            .price-card.popular { transform: scale(1); }
            .nav-links, .nav-actions { display: none; }
            .mobile-toggle { display: block; }
        }
        @media (max-width: 768px) {
            .hero-text h1 { font-size: 2.2rem; }
            .cta-title { font-size: 2rem; }
            .btn-glow { width: 100%; max-width: 300px; padding: 16px; }
            .footer-grid { display: flex; flex-direction: column; text-align: center; gap: 40px; }
            .flex-between { flex-direction: column; align-items: center; }
        }