* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        /* Header & Navigation */
        .uajp-header {
            background: linear-gradient(135deg, #4a90e2 0%, #357abd 100%);
            padding: 0;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .uajp-header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .uajp-logo {
            display: flex;
            align-items: center;
            font-size: 24px;
            font-weight: bold;
            color: white;
            text-decoration: none;
        }

        .uajp-logo img {
            height: 40px;
            margin-right: 10px;
        }

        .uajp-nav-menu {
            display: flex;
            list-style: none;
            gap: 30px;
        }

        .uajp-nav-link {
            color: white;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: opacity 0.3s ease;
        }

        .uajp-nav-link:hover {
            opacity: 0.8;
        }

        /* Hero Section */
        .uajp-hero {
            background: linear-gradient(135deg, #4a90e2 0%, #357abd 100%);
            color: white;
            padding: 80px 20px;
            text-align: center;
        }

        .uajp-hero-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .uajp-hero-title {
            font-size: 48px;
            font-weight: bold;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .uajp-hero-subtitle {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.95;
        }

        .uajp-cta-button {
            display: inline-block;
            background-color: #ff6b6b;
            color: white;
            padding: 15px 40px;
            font-size: 16px;
            font-weight: bold;
            text-decoration: none;
            border-radius: 50px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
            border: none;
            cursor: pointer;
        }

        .uajp-cta-button:hover {
            background-color: #ff5252;
            box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4);
            transform: translateY(-2px);
        }

        /* Main Content */
        .uajp-main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 20px;
        }

        .uajp-section {
            margin-bottom: 60px;
        }

        .uajp-section-title {
            font-size: 32px;
            font-weight: bold;
            color: #2c3e50;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 3px solid #4a90e2;
            display: inline-block;
        }

        .uajp-intro-text {
            font-size: 16px;
            color: #555;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        /* Features Grid */
        .uajp-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin-top: 30px;
        }

        .uajp-feature-card {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            border-left: 4px solid #4a90e2;
        }

        .uajp-feature-card:hover {
            box-shadow: 0 8px 20px rgba(0,0,0,0.12);
            transform: translateY(-5px);
        }

        .uajp-feature-icon {
            font-size: 32px;
            margin-bottom: 15px;
            color: #4a90e2;
        }

        .uajp-feature-title {
            font-size: 18px;
            font-weight: bold;
            color: #2c3e50;
            margin-bottom: 10px;
        }

        .uajp-feature-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
        }

        /* Changelog */
        .uajp-changelog {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
        }

        .uajp-changelog-item {
            padding: 15px 0;
            border-bottom: 1px solid #e0e0e0;
        }

        .uajp-changelog-item:last-child {
            border-bottom: none;
        }

        .uajp-changelog-version {
            font-weight: bold;
            color: #4a90e2;
            font-size: 15px;
            margin-bottom: 8px;
        }

        .uajp-changelog-content {
            color: #555;
            font-size: 14px;
            line-height: 1.6;
        }

        /* Download Section */
        .uajp-download-section {
            background: linear-gradient(135deg, #4a90e2 0%, #357abd 100%);
            color: white;
            padding: 60px 20px;
            text-align: center;
            border-radius: 10px;
            margin: 50px 0;
        }

        .uajp-download-title {
            font-size: 36px;
            font-weight: bold;
            margin-bottom: 20px;
        }

        .uajp-download-desc {
            font-size: 16px;
            margin-bottom: 30px;
            opacity: 0.95;
        }

        .uajp-button-group {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .uajp-download-btn {
            display: inline-block;
            padding: 15px 30px;
            font-size: 15px;
            font-weight: bold;
            border-radius: 50px;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 2px solid white;
        }

        .uajp-download-btn-primary {
            background-color: #ff6b6b;
            border-color: #ff6b6b;
            color: white;
        }

        .uajp-download-btn-primary:hover {
            background-color: transparent;
            color: white;
        }

        .uajp-download-btn-secondary {
            background-color: transparent;
            color: white;
            border-color: white;
        }

        .uajp-download-btn-secondary:hover {
            background-color: white;
            color: #4a90e2;
        }

        /* System Requirements */
        .uajp-requirements {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .uajp-requirement-box {
            background: white;
            padding: 25px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        }

        .uajp-requirement-os {
            font-size: 16px;
            font-weight: bold;
            color: #4a90e2;
            margin-bottom: 12px;
        }

        .uajp-requirement-list {
            list-style: none;
            font-size: 14px;
            color: #666;
            line-height: 1.8;
        }

        .uajp-requirement-list li {
            padding-left: 20px;
            position: relative;
        }

        .uajp-requirement-list li:before {
            content: "✓";
            position: absolute;
            left: 0;
            color: #4a90e2;
            font-weight: bold;
        }

        /* FAQ Section */
        .uajp-faq {
            margin-top: 40px;
        }

        .uajp-faq-item {
            background: white;
            margin-bottom: 15px;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        }

        .uajp-faq-question {
            padding: 20px;
            background-color: #f5f5f5;
            cursor: pointer;
            font-weight: 600;
            color: #2c3e50;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.3s ease;
        }

        .uajp-faq-question:hover {
            background-color: #e8f0ff;
        }

        .uajp-faq-answer {
            padding: 20px;
            color: #666;
            line-height: 1.8;
            display: none;
        }

        .uajp-faq-answer.show {
            display: block;
        }

        /* Footer */
        .uajp-footer {
            background-color: #2c3e50;
            color: white;
            padding: 40px 20px;
            margin-top: 60px;
        }

        .uajp-footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }

        .uajp-footer-section h3 {
            font-size: 16px;
            margin-bottom: 15px;
            color: #4a90e2;
        }

        .uajp-footer-link {
            display: block;
            color: #bbb;
            text-decoration: none;
            font-size: 14px;
            margin-bottom: 10px;
            transition: color 0.3s ease;
        }

        .uajp-footer-link:hover {
            color: #4a90e2;
        }

        .uajp-footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #444;
            color: #999;
            font-size: 13px;
            margin-top: 30px;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .uajp-hero-title {
                font-size: 32px;
            }

            .uajp-hero-subtitle {
                font-size: 16px;
            }

            .uajp-section-title {
                font-size: 24px;
            }

            .uajp-nav-menu {
                gap: 15px;
                font-size: 12px;
            }

            .uajp-button-group {
                flex-direction: column;
            }

            .uajp-download-btn {
                width: 100%;
            }
        }

        @media (max-width: 480px) {
            .uajp-hero {
                padding: 50px 15px;
            }

            .uajp-hero-title {
                font-size: 24px;
            }

            .uajp-nav-menu {
                gap: 10px;
                font-size: 11px;
            }

            .uajp-header-container {
                padding: 10px 15px;
            }

            .uajp-cta-button {
                padding: 12px 30px;
                font-size: 14px;
            }
        }

        /* Highlight */
        .uajp-highlight {
            background-color: #fff3cd;
            padding: 3px 6px;
            border-radius: 3px;
            color: #856404;
        }