/* Base Reset & Variables */
        :root {
            --su4j14-primary: #1a73e8;
            --su4j14-primary-dark: #1557b0;
            --su4j14-pro-accent: #fb8c00;
            --su4j14-text-main: #202124;
            --su4j14-text-light: #5f6368;
            --su4j14-bg-light: #f8f9fa;
            --su4j14-white: #ffffff;
            --su4j14-max-width: 1300px;
            --su4j14-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--su4j14-text-main);
            background-color: var(--su4j14-bg-light);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Layout Helpers */
        .su4j14-container {
            max-width: var(--su4j14-max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .su4j14-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .su4j14-grid {
            display: grid;
            gap: 32px;
        }

        /* Typography */
        h1, h2, h3, h4 {
            line-height: 1.2;
            word-break: keep-all;
            white-space: normal;
        }

        p {
            font-size: clamp(1rem, 0.5vw + 0.8rem, 1.125rem);
            margin-bottom: 1rem;
            line-height: 1.8;
        }

        /* Navigation */
        .su4j14-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0,0,0,0.05);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .su4j14-nav-container {
            height: 80px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .su4j14-logo {
            flex-shrink: 0;
            min-width: 0;
        }

        .su4j14-logo img {
            height: 40px;
            display: block;
        }

        .su4j14-nav-list {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
            min-width: 0;
        }

        .su4j14-nav-item a {
            text-decoration: none;
            color: var(--su4j14-text-main);
            padding: 8px 16px;
            font-weight: 500;
            font-size: 0.95rem;
            border-radius: 8px;
            transition: var(--su4j14-transition);
        }

        .su4j14-nav-item a:hover {
            color: var(--su4j14-primary);
            background: rgba(26, 115, 232, 0.05);
        }

        .su4j14-nav-item a.su4j14-active {
            color: var(--su4j14-white);
            background: var(--su4j14-primary);
        }

        /* Hero Section */
        .su4j14-hero {
            padding: 160px 0 96px;
            background: radial-gradient(circle at top right, rgba(26, 115, 232, 0.05), transparent),
                        radial-gradient(circle at bottom left, rgba(251, 140, 0, 0.05), transparent);
            position: relative;
            overflow: hidden;
        }

        .su4j14-hero-content {
            flex: 1;
            min-width: 300px;
            position: relative;
            z-index: 2;
        }

        .su4j14-pro-badge {
            display: inline-block;
            background: var(--su4j14-pro-accent);
            color: white;
            padding: 4px 12px;
            border-radius: 4px;
            font-weight: bold;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .su4j14-hero h1 {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            margin-bottom: 24px;
            color: var(--su4j14-text-main);
            font-weight: 800;
        }

        .su4j14-hero p {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.4rem);
            color: var(--su4j14-text-light);
            max-width: 700px;
            margin-bottom: 40px;
        }

        /* Proprietary Technologies Section */
        .su4j14-tech-section {
            padding: 96px 0;
            background: var(--su4j14-white);
        }

        .su4j14-section-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .su4j14-section-title h2 {
            font-size: clamp(2rem, 3vw + 0.5rem, 2.8rem);
            margin-bottom: 16px;
        }

        .su4j14-tech-grid {
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        }

        .su4j14-tech-card {
            padding: 48px;
            background: var(--su4j14-bg-light);
            border-radius: 24px;
            transition: var(--su4j14-transition);
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
        }

        .su4j14-tech-card:hover {
            transform: translateY(-10px);
            background: var(--su4j14-white);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border-color: var(--su4j14-primary);
        }

        .su4j14-tech-icon {
            font-size: 40px;
            margin-bottom: 24px;
            color: var(--su4j14-primary);
        }

        .su4j14-tech-card h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--su4j14-text-main);
        }

        .su4j14-tech-benefit {
            margin-top: auto;
            padding-top: 16px;
            font-weight: bold;
            color: var(--su4j14-primary);
            font-size: 0.9rem;
            border-top: 1px dashed #ddd;
        }

        /* Workflow Section */
        .su4j14-workflow {
            padding: 96px 0;
            background: #12141d;
            color: var(--su4j14-white);
        }

        .su4j14-workflow-grid {
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            margin-top: 48px;
        }

        .su4j14-step-item {
            position: relative;
            padding: 32px;
            border-left: 2px solid rgba(255,255,255,0.1);
        }

        .su4j14-step-number {
            font-size: 4rem;
            font-weight: 900;
            color: rgba(255,255,255,0.05);
            position: absolute;
            top: 0;
            left: 16px;
            line-height: 1;
        }

        .su4j14-step-content h4 {
            font-size: 1.4rem;
            margin-bottom: 12px;
            color: var(--su4j14-pro-accent);
        }

        /* Access Tiers Section */
        .su4j14-tiers {
            padding: 96px 0;
        }

        .su4j14-tier-grid {
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            align-items: stretch;
        }

        .su4j14-tier-card {
            background: var(--su4j14-white);
            border-radius: 32px;
            padding: 48px;
            display: flex;
            flex-direction: column;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
            border: 1px solid #eee;
        }

        .su4j14-tier-card.su4j14-featured {
            border: 2px solid var(--su4j14-pro-accent);
            transform: scale(1.05);
            z-index: 2;
        }

        .su4j14-tier-name {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .su4j14-tier-user {
            color: var(--su4j14-text-light);
            font-size: 0.9rem;
            margin-bottom: 32px;
            display: block;
        }

        .su4j14-feature-list {
            list-style: none;
            margin-bottom: 40px;
            flex-grow: 1;
        }

        .su4j14-feature-list li {
            padding: 12px 0;
            border-bottom: 1px solid #f0f0f0;
            display: flex;
            align-items: center;
        }

        .su4j14-feature-list li::before {
            content: "✓";
            margin-right: 12px;
            color: #34a853;
            font-weight: bold;
        }

        .su4j14-btn {
            display: inline-block;
            padding: 16px 32px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: bold;
            text-align: center;
            transition: var(--su4j14-transition);
            cursor: pointer;
            border: none;
        }

        .su4j14-btn-primary {
            background: var(--su4j14-primary);
            color: white;
        }

        .su4j14-btn-primary:hover {
            background: var(--su4j14-primary-dark);
            transform: scale(1.02);
        }

        .su4j14-btn-pro {
            background: var(--su4j14-pro-accent);
            color: white;
        }

        /* Footer */
        .su4j14-footer {
            background: var(--su4j14-bg-light);
            padding: 80px 0 40px;
            border-top: 1px solid #eee;
        }

        .su4j14-footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 32px;
        }

        .su4j14-footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--su4j14-primary);
        }

        .su4j14-footer-text {
            color: var(--su4j14-text-light);
            font-size: 0.9rem;
        }

        /* Responsive */
        @media (max-width: 992px) {
            .su4j14-tier-card.su4j14-featured {
                transform: scale(1);
            }
        }

        @media (max-width: 768px) {
            .su4j14-nav-container {
                height: auto;
                padding: 16px;
                justify-content: center;
            }
            .su4j14-nav-list {
                justify-content: center;
                margin-top: 16px;
            }
            .su4j14-hero {
                padding-top: 180px;
                text-align: center;
            }
            .su4j14-hero p {
                margin: 0 auto 40px;
            }
            .su4j14-footer-content {
                flex-direction: column;
                text-align: center;
            }
        }