:root {
            --primary: #ff6b35;
            --primary-light: #ff8c5a;
            --primary-dark: #e55a2b;
            --secondary: #004e89;
            --secondary-light: #1a7cba;
            --accent: #00d4ff;
            --accent-light: #66e6ff;
            --success: #00d084;
            --warning: #ffa500;
            --danger: #ff4757;
            --bg-main: #0a0e27;
            --bg-section: #0f1433;
            --bg-section-alt: #151d3f;
            --bg-card: #1a2450;
            --bg-hover: #252f52;
            --text-primary: #ffffff;
            --text-secondary: #b0b5c8;
            --text-tertiary: #7a7f95;
            --border-color: #2a3554;
            --border-light: #3a4564;
        }

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

        html, body {
            background-color: var(--bg-main);
            color: var(--text-primary);
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 导航栏 */
        .yewq9-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: linear-gradient(180deg, var(--bg-main) 0%, rgba(10, 14, 39, 0.95) 100%);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            padding: 1rem 2rem;
            transition: all 0.3s ease;
        }

        .yewq9-navbar.yewq9-navbar-scrolled {
            background: rgba(10, 14, 39, 0.98);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .yewq9-navbar-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .yewq9-logo {
            display: flex;
            align-items: center;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
            transition: opacity 0.3s ease;
        }

        .yewq9-logo img {
            height: 40px;
            width: auto;
            margin-right: 12px;
        }

        .yewq9-logo:hover {
            opacity: 0.8;
        }

        .yewq9-nav-menu {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .yewq9-nav-menu a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            position: relative;
            padding: 0.5rem 0;
        }

        .yewq9-nav-menu a:hover,
        .yewq9-nav-menu a.yewq9-active {
            color: var(--primary);
        }

        .yewq9-nav-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.3s ease;
        }

        .yewq9-nav-menu a:hover::after,
        .yewq9-nav-menu a.yewq9-active::after {
            width: 100%;
        }

        .yewq9-nav-cta {
            display: flex;
            gap: 1rem;
        }

        .yewq9-btn-nav {
            padding: 0.6rem 1.5rem;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
            font-family: inherit;
        }

        .yewq9-btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: white;
        }

        .yewq9-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
        }

        .yewq9-btn-secondary {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
        }

        .yewq9-btn-secondary:hover {
            background: rgba(0, 212, 255, 0.1);
        }

        .yewq9-hamburger {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            background: none;
            border: none;
        }

        .yewq9-hamburger span {
            width: 25px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        /* Hero区 */
        .yewq9-hero {
            background: linear-gradient(135deg, var(--bg-section) 0%, var(--bg-section-alt) 100%);
            padding: 120px 2rem 80px;
            margin-top: 70px;
            position: relative;
            overflow: hidden;
        }

        .yewq9-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            animation: yewq9-pulse 8s ease-in-out infinite;
        }

        @keyframes yewq9-pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.1); }
        }

        .yewq9-hero-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .yewq9-hero-text h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .yewq9-hero-text p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            line-height: 1.8;
        }

        .yewq9-hero-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .yewq9-btn-large {
            padding: 1rem 2.5rem;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 700;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
            font-family: inherit;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .yewq9-btn-large-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: white;
            box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
        }

        .yewq9-btn-large-primary:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(255, 107, 53, 0.4);
        }

        .yewq9-btn-large-secondary {
            background: transparent;
            color: var(--accent);
            border: 2px solid var(--accent);
        }

        .yewq9-btn-large-secondary:hover {
            background: rgba(0, 212, 255, 0.1);
            transform: translateY(-2px);
        }

        .yewq9-hero-image {
            position: relative;
            height: 400px;
        }

        .yewq9-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 16px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
        }

        /* 平台下载区 */
        .yewq9-platforms {
            background-color: var(--bg-section);
            padding: 80px 2rem;
            position: relative;
        }

        .yewq9-platforms-content {
            max-width: 1400px;
            margin: 0 auto;
        }

        .yewq9-section-title {
            font-size: clamp(2rem, 4vw, 2.8rem);
            font-weight: 800;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .yewq9-section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 3rem;
            max-width: 600px;
        }

        .yewq9-platforms-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }

        .yewq9-platform-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 2rem;
            text-align: center;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .yewq9-platform-card:hover {
            border-color: var(--primary);
            transform: translateY(-8px);
            box-shadow: 0 12px 40px rgba(255, 107, 53, 0.2);
            background: var(--bg-hover);
        }

        .yewq9-platform-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
            display: inline-block;
            width: 80px;
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(0, 212, 255, 0.1) 100%);
            border-radius: 12px;
        }

        .yewq9-platform-card img {
            width: 80px;
            height: 80px;
            object-fit: contain;
            margin-bottom: 1rem;
        }

        .yewq9-platform-name {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }

        .yewq9-platform-version {
            color: var(--text-tertiary);
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
        }

        .yewq9-platform-btn {
            display: inline-block;
            padding: 0.8rem 1.5rem;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: white;
            text-decoration: none;
            border-radius: 8px;
            font-weight: 600;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            font-family: inherit;
        }

        .yewq9-platform-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.3);
        }

        .yewq9-platforms-showcase {
            background: var(--bg-section-alt);
            border-radius: 16px;
            overflow: hidden;
            margin-top: 3rem;
        }

        .yewq9-platforms-showcase img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 版本发布区 */
        .yewq9-versions {
            background-color: var(--bg-section-alt);
            padding: 80px 2rem;
        }

        .yewq9-versions-content {
            max-width: 1400px;
            margin: 0 auto;
        }

        .yewq9-versions-header {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
            margin-bottom: 3rem;
        }

        .yewq9-versions-timeline {
            background: var(--bg-section);
            border-radius: 16px;
            overflow: hidden;
        }

        .yewq9-versions-timeline img {
            width: 100%;
            height: auto;
            display: block;
        }

        .yewq9-versions-list {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .yewq9-version-item {
            background: var(--bg-card);
            border-left: 4px solid var(--primary);
            padding: 1.5rem;
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .yewq9-version-item:hover {
            background: var(--bg-hover);
            transform: translateX(8px);
        }

        .yewq9-version-header {
            display: flex;
            justify-content: space-between;
            align-items: start;
            margin-bottom: 0.8rem;
        }

        .yewq9-version-tag {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: white;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 700;
        }

        .yewq9-version-date {
            color: var(--text-tertiary);
            font-size: 0.9rem;
        }

        .yewq9-version-description {
            color: var(--text-secondary);
            margin-bottom: 1rem;
            line-height: 1.6;
        }

        .yewq9-version-features {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .yewq9-feature-badge {
            background: rgba(0, 212, 255, 0.1);
            color: var(--accent);
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.8rem;
        }

        /* 功能亮点区 */
        .yewq9-features {
            background-color: var(--bg-section);
            padding: 80px 2rem;
        }

        .yewq9-features-content {
            max-width: 1400px;
            margin: 0 auto;
        }

        .yewq9-feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .yewq9-feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 2rem;
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .yewq9-feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transition: left 0.3s ease;
        }

        .yewq9-feature-card:hover {
            border-color: var(--primary);
            background: var(--bg-hover);
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(255, 107, 53, 0.15);
        }

        .yewq9-feature-card:hover::before {
            left: 0;
        }

        .yewq9-feature-icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        .yewq9-feature-title {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: var(--text-primary);
        }

        .yewq9-feature-description {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            line-height: 1.6;
        }

        .yewq9-feature-list {
            list-style: none;
        }

        .yewq9-feature-list li {
            color: var(--text-tertiary);
            margin-bottom: 0.6rem;
            padding-left: 1.5rem;
            position: relative;
        }

        .yewq9-feature-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--success);
            font-weight: bold;
        }

        /* 系统要求区 */
        .yewq9-requirements {
            background-color: var(--bg-section-alt);
            padding: 80px 2rem;
        }

        .yewq9-requirements-content {
            max-width: 1400px;
            margin: 0 auto;
        }

        .yewq9-requirements-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .yewq9-requirement-box {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 2rem;
        }

        .yewq9-requirement-os {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: var(--accent);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .yewq9-requirement-item {
            margin-bottom: 1rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .yewq9-requirement-label {
            color: var(--text-tertiary);
            font-size: 0.9rem;
        }

        .yewq9-requirement-value {
            color: var(--text-primary);
            font-weight: 600;
            margin-top: 0.3rem;
        }

        /* 获取帮助区 */
        .yewq9-support {
            background: linear-gradient(135deg, var(--bg-section) 0%, var(--bg-section-alt) 100%);
            padding: 80px 2rem;
        }

        .yewq9-support-content {
            max-width: 1400px;
            margin: 0 auto;
        }

        .yewq9-support-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .yewq9-support-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 2rem;
            text-align: center;
            transition: all 0.3s ease;
        }

        .yewq9-support-item:hover {
            border-color: var(--accent);
            background: var(--bg-hover);
        }

        .yewq9-support-icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        .yewq9-support-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: var(--text-primary);
        }

        .yewq9-support-description {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
            line-height: 1.6;
        }

        .yewq9-support-link {
            display: inline-block;
            color: var(--accent);
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .yewq9-support-link:hover {
            color: var(--accent-light);
            transform: translateX(4px);
        }

        /* CTA区 */
        .yewq9-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 60px 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .yewq9-cta::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }

        .yewq9-cta-content {
            max-width: 1400px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .yewq9-cta-title {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            font-weight: 800;
            margin-bottom: 1rem;
            color: white;
        }

        .yewq9-cta-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 2rem;
        }

        .yewq9-cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .yewq9-btn-white {
            padding: 1rem 2.5rem;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 700;
            text-decoration: none;
            background: white;
            color: var(--primary);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            font-family: inherit;
        }

        .yewq9-btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
        }

        /* 页脚 */
        .yewq9-footer {
            background-color: var(--bg-section);
            border-top: 1px solid var(--border-color);
            padding: 3rem 2rem 2rem;
        }

        .yewq9-footer-content {
            max-width: 1400px;
            margin: 0 auto;
        }

        .yewq9-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .yewq9-footer-section h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .yewq9-footer-section ul {
            list-style: none;
        }

        .yewq9-footer-section li {
            margin-bottom: 0.8rem;
        }

        .yewq9-footer-section a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .yewq9-footer-section a:hover {
            color: var(--primary);
            transform: translateX(4px);
        }

        .yewq9-footer-brand {
            margin-bottom: 1rem;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .yewq9-footer-divider {
            border-top: 1px solid var(--border-color);
            margin: 2rem 0;
        }

        .yewq9-footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .yewq9-footer-copyright {
            color: var(--text-tertiary);
            font-size: 0.9rem;
        }

        .yewq9-footer-social {
            display: flex;
            gap: 1.5rem;
        }

        .yewq9-social-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 50%;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all 0.3s ease;
            font-size: 1.2rem;
        }

        .yewq9-social-link:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: white;
            transform: translateY(-3px);
        }

        /* 响应式设计 */
        @media (max-width: 1024px) {
            .yewq9-navbar-container {
                padding: 0 1rem;
            }

            .yewq9-nav-menu {
                gap: 1.5rem;
            }

            .yewq9-hero-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .yewq9-hero-image {
                height: 300px;
            }

            .yewq9-versions-header {
                grid-template-columns: 1fr;
            }

            .yewq9-platforms-grid {
                grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            }

            .yewq9-feature-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .yewq9-navbar {
                padding: 1rem;
            }

            .yewq9-hamburger {
                display: flex;
            }

            .yewq9-nav-menu {
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--bg-section);
                flex-direction: column;
                gap: 0;
                padding: 1.5rem;
                border-bottom: 1px solid var(--border-color);
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
            }

            .yewq9-nav-menu.yewq9-active {
                max-height: 500px;
            }

            .yewq9-nav-menu a {
                padding: 1rem 0;
                border-bottom: 1px solid var(--border-color);
            }

            .yewq9-nav-cta {
                flex-direction: column;
                gap: 0.5rem;
            }

            .yewq9-hero {
                padding: 100px 1.5rem 60px;
            }

            .yewq9-hero-text h1 {
                font-size: 2rem;
            }

            .yewq9-hero-image {
                height: 250px;
            }

            .yewq9-hero-actions {
                flex-direction: column;
            }

            .yewq9-btn-large {
                width: 100%;
                justify-content: center;
            }

            .yewq9-platforms,
            .yewq9-versions,
            .yewq9-features,
            .yewq9-requirements,
            .yewq9-support {
                padding: 60px 1.5rem;
            }

            .yewq9-section-title {
                font-size: 1.8rem;
            }

            .yewq9-platforms-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }

            .yewq9-feature-grid {
                grid-template-columns: 1fr;
            }

            .yewq9-footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }

            .yewq9-footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .yewq9-cta {
                padding: 40px 1.5rem;
            }

            .yewq9-cta-title {
                font-size: 1.5rem;
            }

            .yewq9-cta-buttons {
                flex-direction: column;
            }

            .yewq9-btn-white {
                width: 100%;
            }
        }

        @media (max-width: 480px) {
            .yewq9-navbar-container {
                gap: 1rem;
            }

            .yewq9-logo {
                font-size: 1.2rem;
            }

            .yewq9-logo img {
                height: 32px;
            }

            .yewq9-hero {
                padding: 80px 1rem 50px;
            }

            .yewq9-hero-text h1 {
                font-size: 1.5rem;
            }

            .yewq9-hero-text p {
                font-size: 0.95rem;
            }

            .yewq9-hero-image {
                height: 200px;
            }

            .yewq9-section-title {
                font-size: 1.5rem;
            }

            .yewq9-platforms-grid {
                grid-template-columns: 1fr;
            }

            .yewq9-requirements-grid {
                grid-template-columns: 1fr;
            }

            .yewq9-support-grid {
                grid-template-columns: 1fr;
            }

            .yewq9-footer-grid {
                grid-template-columns: 1fr;
            }

            .yewq9-footer-social {
                justify-content: center;
            }

            .yewq9-version-item {
                padding: 1rem;
            }
        }

        .position-relative {
            position: relative;
        }

        .yewq9-feature-card {
            position: relative;
        }

        /* 加载动画 */
        @keyframes yewq9-fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .yewq9-fade-in {
            animation: yewq9-fadeIn 0.6s ease-out;
        }

        /* 波形动画 */
        @keyframes yewq9-wave {
            0%, 100% { transform: translateX(0); }
            50% { transform: translateX(-10px); }
        }

        .yewq9-wave {
            animation: yewq9-wave 2s ease-in-out infinite;
        }