:root {
            --ysa473-primary: #FF7139;
            --ysa473-secondary: #8133FF;
            --ysa473-bg-dark: #0C0C0D;
            --ysa473-surface: #1C1B22;
            --ysa473-text-main: #FBFBFE;
            --ysa473-text-dim: #BFBFC3;
            --ysa473-accent: #00DDFF;
            --ysa473-spacing-unit: 8px;
            --ysa473-max-width: 1100px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--ysa473-bg-dark);
            color: var(--ysa473-text-main);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 导航栏 */
        .ysa473-nav-wrapper {
            position: fixed;
            top: 24px;
            left: 50%;
            transform: translateX(-50%);
            width: 95%;
            max-width: 1200px;
            z-index: 1000;
        }

        .ysa473-navbar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            background: rgba(28, 27, 34, 0.85);
            backdrop-filter: blur(12px);
            padding: 12px 24px;
            border-radius: 50px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
        }

        .ysa473-logo {
            min-width: 0;
            flex: 0 0 auto;
        }

        .ysa473-logo img {
            height: 36px;
            display: block;
        }

        .ysa473-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
            min-width: 0;
        }

        .ysa473-menu-item a {
            color: var(--ysa473-text-dim);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

        .ysa473-menu-item a:hover {
            color: var(--ysa473-primary);
        }

        .ysa473-menu-item.active a {
            color: var(--ysa473-primary);
            position: relative;
        }

        /* Hero 区块 - 独特堆叠布局 */
        .ysa473-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            position: relative;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            text-align: center;
            overflow: hidden;
        }

        .ysa473-hero-bg {
            position: absolute;
            top: -10%;
            left: 50%;
            transform: translateX(-50%);
            width: 100%;
            height: 120%;
            background: radial-gradient(circle at center, rgba(129, 51, 255, 0.15) 0%, transparent 70%);
            z-index: -1;
        }

        .ysa473-container {
            max-width: var(--ysa473-max-width);
            width: 100%;
            padding: 0 24px;
            margin: 0 auto;
        }

        .ysa473-hero-title {
            font-size: clamp(2rem, 5vw + 1rem, 4rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #fff 0%, #aaa 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            word-break: keep-all;
        }

        .ysa473-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--ysa473-text-dim);
            max-width: 800px;
            margin: 0 auto 40px;
        }

        /* 核心设置展示区 */
        .ysa473-settings-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            margin-top: 48px;
        }

        .ysa473-card {
            background: var(--ysa473-surface);
            border-radius: 24px;
            padding: 40px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.3s ease;
            position: relative;
            min-width: 0;
        }

        .ysa473-card:hover {
            transform: translateY(-10px);
            border-color: var(--ysa473-secondary);
        }

        .ysa473-card-icon {
            width: 56px;
            height: 56px;
            background: rgba(129, 51, 255, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            font-size: 24px;
            color: var(--ysa473-secondary);
        }

        .ysa473-card h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: #fff;
        }

        .ysa473-card p {
            color: var(--ysa473-text-dim);
            font-size: 1rem;
        }

        /* 步骤说明区 - 错位图文布局 */
        .ysa473-section {
            padding: 96px 0;
        }

        .ysa473-split {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .ysa473-split > div {
            flex: 1;
            min-width: 300px;
        }

        .ysa473-image-mockup {
            background: linear-gradient(45deg, var(--ysa473-surface), #2B2A33);
            border-radius: 20px;
            padding: 10px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 20px 50px rgba(0,0,0,0.5);
        }

        .ysa473-mockup-inner {
            background: #0C0C0D;
            border-radius: 12px;
            aspect-ratio: 16/10;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            position: relative;
        }

        .ysa473-mockup-ui {
            width: 80%;
            height: 60%;
            border: 2px solid var(--ysa473-primary);
            border-radius: 8px;
            position: relative;
        }

        .ysa473-mockup-ui::before {
            content: "";
            position: absolute;
            top: 10px;
            left: 10px;
            width: 40%;
            height: 10px;
            background: var(--ysa473-primary);
            border-radius: 4px;
        }

        .ysa473-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 113, 57, 0.1);
            color: var(--ysa473-primary);
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* 资讯区块 */
        .ysa473-news-section {
            background: #131219;
            padding: 80px 0;
        }

        .ysa473-news-item {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            padding: 24px;
            background: var(--ysa473-surface);
            border-radius: 16px;
            margin-bottom: 24px;
            transition: background 0.3s ease;
            min-width: 0;
        }

        .ysa473-news-item:hover {
            background: #2B2A33;
        }

        .ysa473-news-date {
            font-weight: bold;
            color: var(--ysa473-accent);
            min-width: 100px;
        }

        .ysa473-news-content h4 {
            margin-bottom: 8px;
            font-size: 1.2rem;
        }

        /* 页脚 */
        .ysa473-footer {
            padding: 64px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
        }

        .ysa473-footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
        }

        .ysa473-footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
            margin-bottom: 32px;
            list-style: none;
        }

        .ysa473-footer-links a {
            color: var(--ysa473-text-dim);
            text-decoration: none;
            font-size: 0.9rem;
        }

        .ysa473-copyright {
            color: #666;
            font-size: 0.85rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .ysa473-menu {
                display: none; /* 简化演示，实际可做汉堡菜单 */
            }
            .ysa473-hero-title {
                font-size: 2.5rem;
            }
            .ysa473-split {
                flex-direction: column;
                text-align: center;
            }
            .ysa473-navbar {
                justify-content: center;
            }
        }