:root {
            --ysa473-primary: #FF7139;
            --ysa473-secondary: #0060DF;
            --ysa473-accent: #800220;
            --ysa473-dark: #0C0C0D;
            --ysa473-light: #F9FAFB;
            --ysa473-gray: #5B5B66;
            --ysa473-white: #FFFFFF;
            --ysa473-gradient: linear-gradient(135deg, #FF9400 0%, #FF7139 50%, #9059FF 100%);
            --ysa473-container-max: 1400px;
            --ysa473-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--ysa473-light);
            color: var(--ysa473-dark);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* Layout Helpers */
        .ysa473-container {
            max-width: var(--ysa473-container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .ysa473-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .ysa473-grid {
            display: grid;
            gap: 32px;
        }

        /* Typography */
        h1, h2, h3 {
            line-height: 1.2;
            word-break: break-word;
            white-space: normal;
        }

        .ysa473-fluid-h1 {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
        }

        .ysa473-fluid-h2 {
            font-size: clamp(2rem, 3vw + 0.5rem, 3rem);
            font-weight: 700;
        }

        .ysa473-fluid-p {
            font-size: clamp(1rem, 1vw + 0.5rem, 1.25rem);
            line-height: 1.8;
            color: var(--ysa473-gray);
            max-width: 800px;
        }

        /* Navigation */
        .ysa473-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: var(--ysa473-transition);
        }

        .ysa473-nav-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            min-width: 0;
        }

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

        .ysa473-logo img {
            height: 40px;
            width: auto;
            display: block;
        }

        .ysa473-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
            min-width: 0;
        }

        .ysa473-menu-item a {
            text-decoration: none;
            color: var(--ysa473-dark);
            font-size: 14px;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 8px;
            transition: var(--ysa473-transition);
        }

        .ysa473-menu-item a:hover {
            background: rgba(0, 96, 223, 0.05);
            color: var(--ysa473-secondary);
        }

        .ysa473-menu-item a.ysa473-active {
            background: var(--ysa473-secondary);
            color: var(--ysa473-white);
        }

        /* Hero Section - Unique Diagonal Split */
        .ysa473-hero {
            padding: 160px 0 100px;
            background: var(--ysa473-white);
            position: relative;
            overflow: hidden;
        }

        .ysa473-hero::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: var(--ysa473-gradient);
            clip-path: polygon(25% 0%, 100% 0%, 100% 100%, 0% 100%);
            opacity: 0.05;
        }

        .ysa473-hero-content {
            position: relative;
            z-index: 2;
            min-width: 0;
        }

        .ysa473-hero-tag {
            display: inline-block;
            background: rgba(255, 113, 57, 0.1);
            color: var(--ysa473-primary);
            padding: 4px 16px;
            border-radius: 20px;
            font-weight: 700;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* Cleaning Station Interface */
        .ysa473-clean-box {
            background: var(--ysa473-white);
            border-radius: 24px;
            padding: 48px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
            margin-top: -60px;
            position: relative;
            z-index: 10;
            border: 1px solid rgba(0,0,0,0.02);
            min-width: 0;
        }

        .ysa473-clean-grid {
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            display: grid;
        }

        .ysa473-step-card {
            padding: 32px;
            border-radius: 16px;
            background: var(--ysa473-light);
            border: 2px solid transparent;
            transition: var(--ysa473-transition);
            min-width: 0;
            word-break: break-word;
        }

        .ysa473-step-card:hover {
            border-color: var(--ysa473-primary);
            transform: translateY(-8px);
            box-shadow: 0 12px 24px rgba(255, 113, 57, 0.1);
        }

        .ysa473-step-number {
            font-size: 48px;
            font-weight: 900;
            color: rgba(255, 113, 57, 0.2);
            line-height: 1;
            margin-bottom: 16px;
        }

        /* Action Buttons */
        .ysa473-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 16px 32px;
            border-radius: 12px;
            font-weight: 700;
            text-decoration: none;
            transition: var(--ysa473-transition);
            cursor: pointer;
            border: none;
            min-width: 0;
        }

        .ysa473-btn-primary {
            background: var(--ysa473-primary);
            color: var(--ysa473-white);
            box-shadow: 0 8px 16px rgba(255, 113, 57, 0.3);
        }

        .ysa473-btn-primary:hover {
            background: #e65a2b;
            transform: scale(1.02);
        }

        /* Section Styling */
        .ysa473-section {
            padding: 96px 0;
            min-width: 0;
        }

        .ysa473-alt-bg {
            background-color: var(--ysa473-dark);
            color: var(--ysa473-white);
        }

        .ysa473-alt-bg .ysa473-fluid-p {
            color: rgba(255,255,255,0.7);
        }

        /* Info Visual Blocks (Replacement for Emojis) */
        .ysa473-visual-accent {
            width: 60px;
            height: 60px;
            background: var(--ysa473-gradient);
            border-radius: 12px;
            margin-bottom: 24px;
            position: relative;
        }

        .ysa473-visual-accent::after {
            content: "";
            position: absolute;
            inset: 10px;
            border: 2px solid white;
            border-radius: 8px;
            opacity: 0.5;
        }

        /* Dynamic Section */
        .ysa473-article-list {
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            display: grid;
            margin-top: 48px;
        }

        /* Footer */
        .ysa473-footer {
            background: #f0f0f2;
            padding: 64px 0 32px;
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        .ysa473-footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 48px;
        }

        .ysa473-footer-brand {
            flex: 1;
            min-width: 280px;
        }

        .ysa473-footer-brand-name {
            font-size: 24px;
            font-weight: 800;
            color: var(--ysa473-dark);
            margin-bottom: 16px;
        }

        .ysa473-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
        }

        .ysa473-footer-group h4 {
            margin-bottom: 24px;
            font-size: 16px;
            color: var(--ysa473-dark);
        }

        .ysa473-footer-group ul {
            list-style: none;
        }

        .ysa473-footer-group ul li {
            margin-bottom: 12px;
        }

        .ysa473-footer-group ul li a {
            color: var(--ysa473-gray);
            text-decoration: none;
            font-size: 14px;
            transition: var(--ysa473-transition);
        }

        .ysa473-footer-group ul li a:hover {
            color: var(--ysa473-secondary);
        }

        .ysa473-copyright {
            text-align: center;
            padding-top: 32px;
            border-top: 1px solid rgba(0,0,0,0.05);
            font-size: 13px;
            color: var(--ysa473-gray);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .ysa473-nav-inner {
                height: auto;
                padding: 16px 0;
            }
            .ysa473-menu {
                margin-top: 16px;
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 768px) {
            .ysa473-clean-grid, .ysa473-article-list {
                grid-template-columns: 1fr;
            }
            .ysa473-hero {
                padding: 120px 0 60px;
                text-align: center;
            }
            .ysa473-fluid-p {
                margin: 0 auto;
            }
            .ysa473-clean-box {
                padding: 24px;
                margin-top: 24px;
            }
        }