/* ============================================================
   SafeW 官网下载中心 - 独立样式表
   文件: static_safew/css/download.css
   说明: 包含全局变量、布局、组件及响应式
   ============================================================ */

/* ---------- 全局变量 ---------- */
:root {
            --bg-base: #06010d;
            --accent-purple: #a855f7;
            --accent-blue: #3b82f6;
            --text-white: #ffffff;
            --text-gray: #b0aac2;
            --card-blend-bg: rgba(26, 12, 46, 0.3);
            --card-blend-border: rgba(168, 85, 247, 0.12);
            --gradient-main: linear-gradient(90deg, #a855f7 0%, #3b82f6 100%);
        }

        * { margin: 0; padding: 0; box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
        html { scroll-behavior: smooth; }
        body { background-color: var(--bg-base); color: var(--text-white); line-height: 1.6; overflow-x: hidden; position: relative; }

        .neon-bg-glow {
            position: absolute;
            width: 900px;
            height: 900px;
            background: radial-gradient(circle, rgba(147, 51, 234, 0.45) 0%, rgba(59, 130, 246, 0.1) 45%, rgba(6, 1, 13, 0) 70%);
            pointer-events: none;
            z-index: 1;
            filter: blur(50px);
        }
        .glow-1 { top: -150px; right: -100px; }
        .glow-2 { top: 800px; left: -250px; background: radial-gradient(circle, rgba(59, 130, 246, 0.35) 0%, rgba(147, 51, 234, 0.2) 50%, rgba(6, 1, 13, 0) 70%); }
        .glow-3 { top: 1800px; right: -250px; background: radial-gradient(circle, rgba(168, 85, 247, 0.4) 0%, rgba(6, 1, 13, 0) 70%); }

        section, header, footer { position: relative; z-index: 2; }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 8%;
            background: rgba(6, 1, 13, 0.75);
            backdrop-filter: blur(20px);
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 9999;
            border-bottom: 1px solid rgba(168, 85, 247, 0.08);
            box-sizing: border-box;
        }
        .logo-img { height: 32px; display: block; cursor: pointer; z-index: 10; }
        .nav-wrapper { position: absolute; left: 50%; transform: translateX(-50%); display: flex; align-items: center; }
        nav { display: flex; gap: 35px; }
        nav span { color: rgba(255, 255, 255, 0.65); font-size: 14px; cursor: pointer; transition: color 0.2s; }
        nav span:hover { color: var(--text-white); }
        nav .active { color: var(--text-white); }

        .lang-container { position: absolute; right: 8%; z-index: 10; }
        .lang-select { color: rgba(255, 255, 255, 0.8); font-size: 14px; cursor: pointer; display: flex; align-items: center; gap: 6px; }
        .lang-dropdown { position: absolute; top: 100%; right: 0; margin-top: 8px; background: rgba(20, 10, 35, 0.95); border: 1px solid rgba(168, 85, 247, 0.25); border-radius: 8px; width: 130px; padding: 6px 0; display: none; backdrop-filter: blur(10px); }
        .lang-container:hover .lang-dropdown { display: block; }
        .lang-dropdown a { display: flex; align-items: center; gap: 10px; padding: 10px 16px; color: rgba(255, 255, 255, 0.7); text-decoration: none; font-size: 13px; }
        .lang-dropdown a:hover { background: rgba(168, 85, 247, 0.2); color: var(--text-white); }

        .content-section { padding: 180px 8% 80px; max-width: 1200px; margin: 0 auto; }
        .section-title { font-size: 36px; font-weight: bold; margin-bottom: 16px; text-align: center; }
        .section-subtitle { font-size: 16px; color: var(--text-gray); text-align: center; margin-bottom: 50px; }
        .grid-download { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 20px; }

        .download-card {
            background: var(--card-blend-bg);
            border: 1px solid var(--card-blend-border);
            border-radius: 16px;
            padding: 40px 30px;
            text-align: center;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
        }
        .download-card:hover { border-color: rgba(168, 85, 247, 0.5); transform: translateY(-6px); box-shadow: 0 12px 40px rgba(147, 51, 234, 0.12); }
        .download-card .icon-wrap {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: rgba(168, 85, 247, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 32px;
            color: var(--accent-purple);
        }
        .download-card h3 { font-size: 18px; margin-bottom: 10px; }
        .download-card p { font-size: 13px; color: var(--text-gray); margin-bottom: 24px; line-height: 1.6; }

        .download-btn-card {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #a855f7, #3b82f6);
            color: #fff;
            padding: 10px 28px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            box-shadow: 0 4px 16px rgba(147, 51, 234, 0.25);
        }
        .download-btn-card:hover:not(:disabled) {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(147, 51, 234, 0.4);
            filter: brightness(1.05);
        }
        .download-btn-card:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }
        .download-btn-card i { font-size: 14px; }

        /* 新增特色区域 */
        .feature-banner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 60px;
            padding-top: 60px;
            border-top: 1px solid rgba(168, 85, 247, 0.08);
        }
        .feature-banner-item {
            background: var(--card-blend-bg);
            border: 1px solid var(--card-blend-border);
            border-radius: 16px;
            padding: 36px 32px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: 0.3s;
        }
        .feature-banner-item:hover { border-color: rgba(168, 85, 247, 0.35); }
        .feature-banner-item .icon {
            font-size: 28px;
            color: var(--accent-purple);
            flex-shrink: 0;
            margin-top: 4px;
        }
        .feature-banner-item h4 { font-size: 17px; margin-bottom: 8px; }
        .feature-banner-item p { font-size: 13px; color: var(--text-gray); line-height: 1.7; }

        /* 页脚 */
        .footer-new {
            background: #030008;
            padding: 60px 8% 30px 8%;
            border-top: 1px solid rgba(168, 85, 247, 0.08);
            color: #7a6f94;
            font-size: 13px;
        }
        .footer-inner { max-width: 1280px; margin: 0 auto; }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(168, 85, 247, 0.06);
        }

        .footer-brand .logo {
            font-weight: 700;
            font-size: 22px;
            letter-spacing: 2px;
            background: linear-gradient(130deg, #a78bfa, #6366f1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: #7a6f94;
            font-size: 13px;
            line-height: 1.7;
            max-width: 300px;
            margin-bottom: 20px;
        }

        .social-icons {
            display: flex;
            gap: 14px;
        }
        .social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(168, 85, 247, 0.08);
            border: 1px solid rgba(168, 85, 247, 0.12);
            color: #8a7aa8;
            transition: all 0.25s;
            text-decoration: none;
            font-size: 14px;
        }
        .social-icons a:hover {
            background: rgba(168, 85, 247, 0.2);
            border-color: rgba(168, 85, 247, 0.4);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-col h4 {
            color: #f0ecfc;
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul { list-style: none; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: #7a6f94;
            text-decoration: none;
            font-size: 13px;
            transition: color 0.2s;
        }
        .footer-col ul li a:hover { color: #e0d8f0; }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 12px;
            color: #5b4e72;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom-links {
            display: flex;
            gap: 24px;
        }
        .footer-bottom-links a {
            color: #5b4e72;
            text-decoration: none;
            transition: color 0.2s;
            font-size: 12px;
        }
        .footer-bottom-links a:hover { color: #b0aac2; }

        @media (max-width: 1024px) {
            header { padding: 15px 5%; }
            .nav-wrapper { position: static_safew/; transform: none; }
            nav { display: none; }
            .lang-container { position: static_safew/; }
            .grid-download { grid-template-columns: 1fr 1fr; }
            .feature-banner { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-brand { grid-column: 1 / -1; }
            .footer-brand p { max-width: 100%; }
        }

        @media (max-width: 600px) {
            .grid-download { grid-template-columns: 1fr; }
            .section-title { font-size: 26px; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .footer-bottom-links { flex-wrap: wrap; justify-content: center; }
            .content-section { padding: 140px 5% 60px; }
        }