/*! 由 ./zh/download/info.html 内联 <style> 原样提取，勿手改（保持视觉一致） */

        /* === 全局样式重置 === */
        * { margin: 0; padding: 0; box-sizing: border-box; }
        :root {
            --primary: #87CEEB;
            --primary-dark: #4682B4;
            --bg: #E6F7FF;
            --card: #FFFFFF;
            --text: #333;
            --gray: #666;
            --alert-bg: #003366;
            --gap-sm: 8px;
            --gap-md: 16px;
            --gap-lg: 24px;
            --padding-sm: 12px;
            --padding-md: 20px;
            --padding-lg: 30px;
            --device-shadow: 0 0 20px rgba(0,0,0,0.15);
            --elastic-out: cubic-bezier(0.34, 1.56, 0.64, 1);
            --elastic-soft: cubic-bezier(0.22, 1, 0.36, 1);
        }
        /* 系统字体自适应 */
        body::before {
            content: '';
            position: fixed; top: 0; left: 0;
            width: 100%; height: 100%;
            background: radial-gradient(ellipse at 20% 50%, rgba(135,206,235,0.10), transparent 60%),
                        radial-gradient(ellipse at 80% 20%, rgba(70,130,180,0.06), transparent 50%);
            z-index: 0;
            animation: bgDrift 14s ease-in-out infinite alternate;
            pointer-events: none;
        }
        @keyframes bgDrift { 0%{transform:scale(1);opacity:0.7} 100%{transform:scale(1.04);opacity:1} }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", sans-serif;
            background: #f0f4f8;
            color: var(--text);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            position: relative;
            font-size: 16px;
            transition: all 0.3s ease;
        }
        /* 设备比例切换容器 */
        .device-switch-container {
            position: fixed;
            top: 80px;
            right: 20px;
            z-index: 99;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .switch-toggle-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--primary-dark);
            border: none;
            font-size: 18px;
            cursor: pointer;
            box-shadow: var(--device-shadow);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s var(--elastic-out);
        }
        .switch-toggle-btn:hover{transform:scale(1.08);box-shadow:0 0 25px rgba(135,206,235,0.5);}
        .switch-toggle-btn:active{transform:scale(0.93);transition-duration:0.1s;}
        .device-options {
            display: none;
            flex-direction: column;
            gap: 8px;
            background: white;
            padding: 10px;
            border-radius: 10px;
            box-shadow: var(--device-shadow);
        }
        .device-options.show {
            display: flex;
        }
        .device-btn {
            padding: 8px 12px;
            border: 1px solid var(--primary);
            border-radius: 6px;
            background: white;
            color: var(--primary-dark);
            cursor: pointer;
            font-size: 14px;
            transition: all 0.25s var(--elastic-soft);
        }
        .device-btn.active, .device-btn:hover {
            background: var(--primary);
            color: white;
            transform: translateX(-3px);
        }
        /* 页面主体容器（用于比例切换） */
        .page-wrapper {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 0 var(--padding-sm);
            transition: all 0.3s ease;
            position: relative; z-index: 1;
        }
        .container {
            flex: 1;
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding: clamp(var(--padding-md), 5vw, var(--padding-lg)) var(--padding-sm);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: var(--gap-sm);
            transition: all 0.3s ease;
        }
        /* 设备比例样式 */
        .device-pc {
            max-width: 1000px;
            width: 100%;
            aspect-ratio: 16/9;
            overflow-y: auto;
            border-radius: 12px;
            box-shadow: var(--device-shadow);
            background: var(--bg);
        }
        .device-tablet {
            max-width: 768px;
            width: 100%;
            aspect-ratio: 4/3;
            overflow-y: auto;
            border-radius: 12px;
            box-shadow: var(--device-shadow);
            background: var(--bg);
        }
        .device-mobile {
            max-width: 420px;
            width: 100%;
            aspect-ratio: 9/16;
            overflow-y: auto;
            border-radius: 20px;
            box-shadow: var(--device-shadow);
            background: var(--bg);
        }
        /* === 导航栏样式 === */
        .navbar {
            background: var(--primary);
            padding: 12px 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 100;
            width: 100%;
            opacity: 0; transform: translateY(-100%);
            animation: navSlideIn 0.7s var(--elastic-soft) 0.1s forwards;
        }
        @keyframes navSlideIn{to{opacity:1;transform:translateY(0);}}
        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 var(--padding-sm);
        }
        .logo {
            font-size: clamp(1.2rem, 4vw, 1.5rem);
            font-weight: bold;
            color: var(--primary-dark);
            text-decoration: none;
            transition: transform 0.35s var(--elastic-out);
        }
        .logo:hover{transform:scale(1.06);}
        .nav-links {
            display: flex;
            gap: clamp(12px, 3vw, 20px);
        }
        .nav-links a {
            color: var(--primary-dark);
            font-weight: 500;
            text-decoration: none;
            font-size: clamp(0.9rem, 3vw, 1rem);
            position: relative;
            padding-bottom: 4px;
            transition: color 0.3s ease;
        }
        .nav-links a::after {
            content: ''; position: absolute; bottom: 0; left: 0;
            width: 0; height: 2px; background: var(--primary-dark); border-radius: 1px;
            transition: width 0.35s var(--elastic-out);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after { width: 100%; }
        .nav-links a:hover, .nav-links a.active {
            text-decoration: underline;
            font-weight: 600;
        }
        /* === 卡片通用样式 === */
        .card {
            background: var(--card);
            width: 100%;
            max-width: 800px;
            border-radius: 16px;
            box-shadow: 0 8px 24px rgba(135, 206, 235, 0.4);
            padding: clamp(var(--padding-md), 5vw, var(--padding-lg));
            transition: box-shadow 0.4s ease, transform 0.4s ease;
            margin-top: var(--gap-sm);
            opacity: 0; transform: translateY(24px) scale(0.98);
            animation: cardIn 0.8s var(--elastic-out) 0.3s forwards;
        }
        @keyframes cardIn{to{opacity:1;transform:translateY(0) scale(1);}}
        .card:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(135, 206, 235, 0.5); }
        .card h1 {
            color: var(--primary-dark);
            text-align: center;
            margin-bottom: var(--gap-lg);
            font-size: clamp(1.8rem, 6vw, 2.5rem);
            opacity: 0; transform: translateY(16px);
            animation: headingIn 0.7s var(--elastic-soft) 0.4s forwards;
        }
        @keyframes headingIn{to{opacity:1;transform:translateY(0);}}
        /* 小巧返回按钮样式（核心） */
        .back-btn {
            color: var(--primary-dark);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.9rem;
            padding: 6px 20px;
            border: 1px solid var(--primary-dark);
            border-radius: 6px;
            transition: all 0.35s var(--elastic-out);
            display: inline-flex;
            align-items: center;
            align-self: flex-start;
            margin-bottom: 0;
            opacity: 0; transform: translateX(-20px);
            animation: fadeSlideIn 0.6s var(--elastic-soft) 0.2s forwards;
        }
        .back-btn::before {
            content: ''; display: inline-block;
            width: 7px; height: 7px;
            border-left: 2px solid var(--primary-dark);
            border-bottom: 2px solid var(--primary-dark);
            transform: rotate(45deg);
            margin-right: 7px;
            flex-shrink: 0;
        }
        .back-btn:hover { background: var(--primary-dark); color: white; transform: translateX(3px); }
        .back-btn:hover::before { border-color: #fff; }
        @keyframes fadeSlideIn{to{opacity:1;transform:translateX(0);}}
        .back-btn:hover {
            background: var(--primary-dark);
            color: white;
        }
        /* 按钮组样式 */
        .btn-group {
            display: flex;
            flex-direction: column;
            gap: var(--gap-md);
            width: 100%;
        }
        /* 社交按钮样式（修复对齐） */
        .social-btn {
            color: var(--primary-dark);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            width: 100%;
            padding: 16px 0;
            border: 1px solid var(--primary-dark);
            border-radius: 8px;
            transition: all 0.35s var(--elastic-out);
            position: relative; overflow: hidden;
            opacity: 0; transform: translateY(12px);
            animation: btnIn 0.5s var(--elastic-out) forwards;
        }
        .social-btn:nth-of-type(1){animation-delay:0.5s;}
        .social-btn:nth-of-type(2){animation-delay:0.6s;}
        .social-btn:nth-of-type(3){animation-delay:0.7s;}
        @keyframes btnIn{to{opacity:1;transform:translateY(0);}}
        .social-btn:hover {
            background: var(--primary-dark); color: white;
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 6px 16px rgba(70,130,180,0.3);
        }
        .social-btn:active { transform: translateY(0) scale(0.97); transition-duration: 0.1s; }
        /* === 底部样式 === */
        footer {
            text-align: center;
            padding: var(--padding-md);
            background-color: var(--primary);
            color: var(--primary-dark);
            font-size: clamp(0.8rem, 2.5vw, 0.85rem);
            line-height: 1.5;
            width: 100%;
            opacity: 0;
            animation: footerIn 0.8s ease 0.6s forwards;
        }
        @keyframes footerIn{to{opacity:1;}}
        
/* === 下载须知弹窗 === */
.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.55);z-index:9999;display:none;align-items:center;justify-content:center;padding:20px;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);animation:modalFadeIn 0.3s ease;}
.modal-overlay.show{display:flex;}
@keyframes modalFadeIn{from{opacity:0}to{opacity:1}}
.modal-box{background:#fff;border-radius:16px;max-width:520px;width:100%;max-height:80vh;overflow-y:auto;padding:28px 24px;box-shadow:0 20px 60px rgba(0,0,0,0.3);animation:modalSlideUp 0.4s var(--elastic-out);}
@keyframes modalSlideUp{from{opacity:0;transform:translateY(30px) scale(0.96)}to{opacity:1;transform:translateY(0) scale(1)}}
.modal-box h2{color:var(--primary-dark);font-size:1.2rem;margin-bottom:12px;padding-bottom:8px;border-bottom:2px solid var(--primary);display:flex;align-items:center;gap:8px;}
/* 标题图标：外链 SVG（原为 Unicode emoji 📋，违反站点「图标一律外链 SVG」约定） */
.modal-title-icon{width:20px;height:20px;flex:none;filter:var(--icon-filter, invert(35%) sepia(60%) saturate(900%) hue-rotate(185deg));}
.modal-box .modal-body{color:var(--gray);font-size:0.9rem;line-height:1.7;margin-bottom:18px;max-height:300px;overflow-y:auto;padding-right:4px;}
.modal-box .modal-body p{margin-bottom:8px;}
.modal-box .modal-body strong{color:var(--text);}
/* 以下两条原先是内联 style 属性，违反「HTML 内禁止内联样式」的站点硬约束，
   已改为类名并由此处集中承担，取值与原内联声明完全一致。 */
.modal-box .modal-body .modal-body-link{color:var(--primary-dark);font-weight:500;}
.modal-box .modal-body .modal-body-confirm{color:var(--text);font-weight:500;margin-top:10px;}
.modal-actions{display:flex;flex-direction:column;gap:8px;}
.modal-actions .modal-btn{display:block;width:100%;padding:10px;border:none;border-radius:8px;font-size:0.95rem;font-weight:500;cursor:pointer;transition:all 0.3s var(--elastic-out);text-align:center;}
.modal-actions .btn-agree{background:var(--primary-dark);color:#fff;}
.modal-actions .btn-agree:hover{background:#35729b;transform:translateY(-1px);}
.modal-actions .btn-agree-today{background:var(--primary);color:var(--primary-dark);}
.modal-actions .btn-agree-today:hover{filter:brightness(0.95);transform:translateY(-1px);}
.modal-actions .btn-disagree{background:transparent;color:var(--gray);font-size:0.85rem;}
.modal-actions .btn-disagree:hover{color:var(--text);background:rgba(0,0,0,0.04);}
@media(max-width:480px){.modal-box{padding:20px 16px;}}

        /* === 媒体查询 === */
        @media (max-width: 768px) {
            .device-switch-container {
                top: 70px;
                right: 10px;
            }
            .switch-toggle-btn {
                width: 40px;
                height: 40px;
                font-size: 16px;
            }
            .container {
                gap: var(--gap-sm);
                align-items: flex-start;
                padding-left: var(--padding-md);
                padding-right: var(--padding-md);
            }
            .card {
                max-width: 100%;
            }
        }
        @media (max-width: 480px) {
            .nav-container {
                flex-wrap: wrap;
                justify-content: center;
                gap: var(--gap-sm);
            }
            .nav-links {
                margin-top: 8px;
                justify-content: center;
            }
            .device-options {
                right: 50px;
            }
            .container {
                align-items: flex-start;
            }
        }
        /* 图标样式 */
        .icon-32 {
            width: 32px;
            height: 32px;
            object-fit: contain;
            user-select: none;
            -webkit-user-select: none;
            border-radius: 2px;
        }