/* ==========================================
           1. 全局重置与极简适配
           ========================================== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            user-select: none;
            -webkit-user-select: none;
        }
        
        html, body {
            width: 100%;
            height: 100%;
            overflow: hidden;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background: #0b0f19; /* 兜底深色，防止白边 */
            -webkit-tap-highlight-color: transparent;
        }

        /* ==========================================
           2. 3D液态流光背景 (全屏覆盖，防黑边)
           ========================================== */
        .bg-gradient-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 1;
            background: linear-gradient(125deg, #e0f2fe 0%, #ffffff 40%, #bae6fd 70%, #f472b6 100%);
            background-size: 400% 400%;
            animation: liquidBg 15s ease infinite;
        }

        /* 3D液态悬浮光泡 */
        .liquid-blob-1 {
            position: absolute;
            width: 300px;
            height: 300px;
            top: -50px;
            left: -50px;
            background: radial-gradient(circle, rgba(14,165,233,0.3) 0%, rgba(255,255,255,0) 70%);
            filter: blur(30px);
            animation: floatBlob 8s ease-in-out infinite alternate;
        }

        .liquid-blob-2 {
            position: absolute;
            width: 400px;
            height: 400px;
            bottom: -100px;
            right: -100px;
            background: radial-gradient(circle, rgba(236,72,153,0.2) 0%, rgba(255,255,255,0) 70%);
            filter: blur(40px);
            animation: floatBlob 12s ease-in-out infinite alternate-reverse;
        }

        @keyframes liquidBg {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        @keyframes floatBlob {
            0% { transform: translate(0, 0) scale(1); }
            100% { transform: translate(40px, 30px) scale(1.2); }
        }

        /* ==========================================
           3. 手机端主容器限制 (100vh 绝对不溢出)
           ========================================== */
        .phone-container {
            position: relative;
            z-index: 10;
            width: 100%;
            max-width: 420px;
            height: 100vh;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            align-items: center;
            padding: 2.5vh 20px;
            overflow: hidden;
            background: rgba(255, 255, 255, 0.45);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-left: 1px solid rgba(255, 255, 255, 0.4);
            border-right: 1px solid rgba(255, 255, 255, 0.4);
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.05);
        }

        /* ==========================================
           4. 头部导航 (Top Mini-CTA)
           ========================================== */
        .header {
            width: 100%;
            height: 7vh;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 5px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, #38bdf8, #ec4899);
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 900;
            box-shadow: 0 4px 10px rgba(236,72,153,0.3);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
        }

        .logo-title {
            font-size: 15px;
            font-weight: 800;
            color: #0f172a;
            letter-spacing: 1px;
        }

        .logo-sub {
            font-size: 9px;
            color: #64748b;
            font-weight: 600;
            transform: scale(0.9);
            transform-origin: left;
        }

        /* 顶部紧凑下载按钮 */
        .top-download-btn {
            background: linear-gradient(90deg, #0ea5e9, #2563eb);
            color: #fff;
            font-size: 12px;
            font-weight: 800;
            padding: 8px 14px;
            border-radius: 30px;
            text-decoration: none;
            box-shadow: 0 4px 12px rgba(37,99,235,0.25);
            display: flex;
            align-items: center;
            gap: 4px;
            animation: pulseMini 2s infinite;
        }

        @keyframes pulseMini {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }

        /* ==========================================
           5. 极致诱惑文案区
           ========================================== */
        .headline-section {
            width: 100%;
            text-align: center;
            margin-top: 1vh;
        }

        .badge-main {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(236, 72, 153, 0.1);
            color: #db2777;
            font-size: 11px;
            font-weight: 800;
            padding: 4px 10px;
            border-radius: 20px;
            border: 1px solid rgba(236, 72, 153, 0.2);
            margin-bottom: 1.2vh;
        }

        .main-title {
            font-size: 22px;
            font-weight: 900;
            color: #1e1b4b;
            line-height: 1.3;
            letter-spacing: -0.5px;
        }

        .main-title span {
            background: linear-gradient(120deg, #ec4899, #8b5cf6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .sub-desc {
            font-size: 12px;
            color: #475569;
            font-weight: 600;
            margin-top: 0.8vh;
            letter-spacing: 0.5px;
        }

        /* ==========================================
           6. 3D堆栈视觉中心（3张图替换处）
           ========================================== */
        .gallery-3d-wrapper {
            width: 100%;
            height: 38vh;
            perspective: 1200px;
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
            margin: 1.5vh 0;
        }

        .card-3d {
            position: absolute;
            width: 160px;
            height: 240px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
            transition: all 0.5s ease;
            background-color: #f1f5f9;
            border: 2px solid #fff;
        }

        .card-3d img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* 3D 扇形堆叠定位 */
        /* 左卡片 */
        .card-left {
            transform: translateX(-65px) translateY(5px) rotateZ(-12deg) scale(0.85);
            z-index: 1;
            filter: brightness(0.85) blur(0.5px);
        }

        /* 右卡片 */
        .card-right {
            transform: translateX(65px) translateY(5px) rotateZ(12deg) scale(0.85);
            z-index: 2;
            filter: brightness(0.85) blur(0.5px);
        }

        /* 中间焦点卡片 */
        .card-center {
            transform: translateZ(80px);
            z-index: 3;
            box-shadow: 0 20px 40px rgba(14, 165, 233, 0.25);
            border: 3.5px solid #fff;
        }

        /* 3D 浮动标签 */
        .card-badge {
            position: absolute;
            bottom: 12px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(15, 23, 42, 0.75);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 10px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 20px;
            white-space: nowrap;
            letter-spacing: 0.5px;
            border: 0.5px solid rgba(255, 255, 255, 0.2);
            z-index: 4;
        }

        /* ==========================================
           7. 动态滚动弹幕 & 福利标签
           ========================================== */
        .ticker-container {
            width: 100%;
            height: 4vh;
            background: rgba(255, 255, 255, 0.6);
            border-top: 1px solid rgba(255, 255, 255, 0.8);
            border-bottom: 1px solid rgba(255, 255, 255, 0.8);
            display: flex;
            align-items: center;
            overflow: hidden;
            position: relative;
        }

        .ticker-track {
            display: flex;
            white-space: nowrap;
            gap: 40px;
            animation: marquee 16s linear infinite;
        }

        .ticker-item {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 11px;
            color: #475569;
            font-weight: 700;
        }

        .ticker-icon {
            color: #ec4899;
            font-size: 12px;
        }

        @keyframes marquee {
            0% { transform: translateX(0%); }
            100% { transform: translateX(-50%); }
        }

        /* 诱惑核心卖点微型模块 */
        .tag-cloud {
            width: 100%;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 6px;
            margin: 1.5vh 0;
        }

        .selling-tag {
            background: rgba(255, 255, 255, 0.9);
            border: 1px solid rgba(56, 189, 248, 0.3);
            color: #0369a1;
            font-size: 10.5px;
            font-weight: 800;
            padding: 5px 10px;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
            display: flex;
            align-items: center;
            gap: 3px;
        }

        /* ==========================================
           8. 底部超强行动召唤按钮 (CTA Panel)
           ========================================== */
        .cta-container {
            width: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.2vh;
            margin-bottom: 1vh;
        }

        /* 主下载大按钮 (CTA) */
        .main-cta-btn {
            width: 100%;
            height: 56px;
            background: linear-gradient(90deg, #38bdf8 0%, #ec4899 50%, #8b5cf6 100%);
            background-size: 200% auto;
            border-radius: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            color: #ffffff;
            font-weight: 900;
            font-size: 21px;
            letter-spacing: 4px;
            text-indent: 4px; /* 完美居中偏置 */
            box-shadow: 0 10px 25px rgba(236, 72, 153, 0.45);
            position: relative;
            overflow: hidden;
            animation: pulseGlow 1.8s infinite, flowGrad 4s linear infinite;
            border: 1px solid rgba(255,255,255,0.25);
        }

        /* 按钮内高光闪烁动画 */
        .main-cta-btn::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(
                to right,
                rgba(255, 255, 255, 0) 30%,
                rgba(255, 255, 255, 0.4) 50%,
                rgba(255, 255, 255, 0) 70%
            );
            transform: rotate(25deg);
            animation: lightSweep 2.5s infinite;
        }

        @keyframes lightSweep {
            0% { transform: translate(-30%, -30%) rotate(25deg); }
            100% { transform: translate(30%, 30%) rotate(25deg); }
        }

        @keyframes flowGrad {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        @keyframes pulseGlow {
            0% { transform: scale(1); box-shadow: 0 10px 25px rgba(236, 72, 153, 0.4); }
            50% { transform: scale(1.02); box-shadow: 0 15px 35px rgba(236, 72, 153, 0.6); }
            100% { transform: scale(1); box-shadow: 0 10px 25px rgba(236, 72, 153, 0.4); }
        }

        /* 私密安全信誉背书 */
        .security-footer {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
            width: 100%;
        }

        .sec-item {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 10px;
            color: #64748b;
            font-weight: 700;
        }

        .sec-item svg {
            color: #10b981;
        }

        /* 隐私协议免责文字 */
        .disclaimer {
            font-size: 9px;
            color: #94a3b8;
            font-weight: 600;
            text-align: center;
        }