:root {
            --zfrc1y-primary: #6366F1;
            --zfrc1y-primary-dark: #4F46E5;
            --zfrc1y-secondary: #0F172A;
            --zfrc1y-accent: #F43F5E;
            --zfrc1y-text-main: #1E293B;
            --zfrc1y-text-muted: #64748B;
            --zfrc1y-bg-light: #F8FAFC;
            --zfrc1y-white: #FFFFFF;
            --zfrc1y-border: #E2E8F0;
            --zfrc1y-shadow: 0 10px 30px -10px rgba(0,0,0,0.1);
            --zfrc1y-max-width: 1380px;
        }

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

        body {
            font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--zfrc1y-text-main);
            background-color: var(--zfrc1y-bg-light);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* Layout Helpers */
        .zfrc1y-container {
            max-width: var(--zfrc1y-max-width);
            margin: 0 auto;
            padding: 0 48px;
            width: 100%;
        }

        @media (max-width: 768px) {
            .zfrc1y-container {
                padding: 0 24px;
            }
        }

        /* Navigation */
        .zfrc1y-nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--zfrc1y-border);
            transition: all 0.3s ease;
        }

        .zfrc1y-nav-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

        .zfrc1y-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .zfrc1y-logo img {
            height: 40px;
            width: auto;
            display: block;
        }

        .zfrc1y-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            min-width: 0;
        }

        .zfrc1y-menu-link {
            text-decoration: none;
            color: var(--zfrc1y-text-main);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s;
            position: relative;
            padding: 8px 0;
        }

        .zfrc1y-menu-link:hover {
            color: var(--zfrc1y-primary);
        }

        .zfrc1y-menu-link.active {
            color: var(--zfrc1y-primary);
        }

        .zfrc1y-menu-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--zfrc1y-primary);
        }

        /* Hero Section */
        .zfrc1y-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: linear-gradient(135deg, #F1F5F9 0%, #E2E8F0 100%);
            position: relative;
            overflow: hidden;
        }

        .zfrc1y-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: rgba(99, 102, 241, 0.03);
            transform: skewX(-15deg) translateX(20%);
        }

        .zfrc1y-hero-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .zfrc1y-hero-content {
            flex: 1;
            min-width: 400px;
            word-break: break-word;
        }

        .zfrc1y-hero-tag {
            display: inline-block;
            background: var(--zfrc1y-primary);
            color: var(--zfrc1y-white);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .zfrc1y-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            color: var(--zfrc1y-secondary);
            margin-bottom: 24px;
        }

        .zfrc1y-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.35rem);
            color: var(--zfrc1y-text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .zfrc1y-hero-visual {
            flex: 1;
            min-width: 400px;
            position: relative;
        }

        .zfrc1y-diff-mockup {
            background: var(--zfrc1y-white);
            border-radius: 16px;
            box-shadow: var(--zfrc1y-shadow);
            padding: 24px;
            border: 1px solid var(--zfrc1y-border);
            position: relative;
            z-index: 2;
        }

        .zfrc1y-mockup-line {
            height: 12px;
            border-radius: 6px;
            margin-bottom: 12px;
            background: #EDF2F7;
        }

        .zfrc1y-mockup-line.diff {
            background: #FEE2E2;
            border-left: 4px solid #EF4444;
        }

        .zfrc1y-mockup-line.match {
            background: #DCFCE7;
            border-left: 4px solid #22C55E;
        }

        /* Tips Section Grid */
        .zfrc1y-section {
            padding: 96px 0;
        }

        .zfrc1y-section-header {
            text-align: center;
            margin-bottom: 64px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .zfrc1y-section-title {
            font-size: clamp(2rem, 3vw + 0.5rem, 2.75rem);
            font-weight: 700;
            color: var(--zfrc1y-secondary);
            margin-bottom: 16px;
        }

        .zfrc1y-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .zfrc1y-tip-card {
            background: var(--zfrc1y-white);
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--zfrc1y-border);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .zfrc1y-tip-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--zfrc1y-shadow);
            border-color: var(--zfrc1y-primary);
        }

        .zfrc1y-tip-icon {
            width: 48px;
            height: 48px;
            background: rgba(99, 102, 241, 0.1);
            color: var(--zfrc1y-primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 24px;
            margin-bottom: 24px;
        }

        .zfrc1y-tip-name {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--zfrc1y-secondary);
        }

        /* Feature Row Layout */
        .zfrc1y-feature-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 80px;
            margin-bottom: 96px;
        }

        .zfrc1y-feature-row.reverse {
            flex-direction: row-reverse;
        }

        .zfrc1y-feature-text {
            flex: 1;
            min-width: 320px;
        }

        .zfrc1y-feature-visual {
            flex: 1;
            min-width: 320px;
            background: var(--zfrc1y-secondary);
            border-radius: 24px;
            padding: 32px;
            color: #94A3B8;
            font-family: monospace;
            font-size: 14px;
            box-shadow: 20px 20px 60px #bebebe, -20px -20px 60px #ffffff;
        }

        .zfrc1y-code-line {
            display: block;
            margin-bottom: 8px;
            border-radius: 4px;
        }

        .zfrc1y-code-highlight {
            color: var(--zfrc1y-white);
            background: rgba(255,255,255,0.1);
            padding: 2px 8px;
        }

        /* CTA Section */
        .zfrc1y-cta {
            background: var(--zfrc1y-secondary);
            color: var(--zfrc1y-white);
            padding: 96px 0;
            text-align: center;
            border-radius: 32px;
            margin-bottom: 96px;
        }

        .zfrc1y-btn {
            display: inline-block;
            background: var(--zfrc1y-primary);
            color: var(--zfrc1y-white);
            padding: 16px 40px;
            border-radius: 12px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
            font-size: 18px;
        }

        .zfrc1y-btn:hover {
            background: var(--zfrc1y-primary-dark);
            transform: scale(1.05);
            box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
        }

        /* Footer */
        .zfrc1y-footer {
            background: var(--zfrc1y-white);
            border-top: 1px solid var(--zfrc1y-border);
            padding: 64px 0 32px;
        }

        .zfrc1y-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .zfrc1y-footer-brand {
            font-size: 24px;
            font-weight: 800;
            color: var(--zfrc1y-secondary);
            margin-bottom: 16px;
        }

        .zfrc1y-footer-title {
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--zfrc1y-secondary);
        }

        .zfrc1y-footer-links {
            list-style: none;
        }

        .zfrc1y-footer-links li {
            margin-bottom: 12px;
        }

        .zfrc1y-footer-links a {
            text-decoration: none;
            color: var(--zfrc1y-text-muted);
            transition: color 0.3s;
        }

        .zfrc1y-footer-links a:hover {
            color: var(--zfrc1y-primary);
        }

        .zfrc1y-copyright {
            text-align: center;
            padding-top: 32px;
            border-top: 1px solid var(--zfrc1y-border);
            color: var(--zfrc1y-text-muted);
            font-size: 14px;
        }

        /* Responsive Breakpoints */
        @media (max-width: 992px) {
            .zfrc1y-hero-inner {
                flex-direction: column;
                text-align: center;
            }
            .zfrc1y-hero-content, .zfrc1y-hero-visual {
                min-width: 100%;
            }
            .zfrc1y-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .zfrc1y-footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .zfrc1y-nav-container {
                height: auto;
                padding: 16px 0;
                flex-direction: column;
                gap: 16px;
            }
            .zfrc1y-menu {
                justify-content: center;
                gap: 12px;
            }
            .zfrc1y-menu-link {
                font-size: 13px;
            }
            .zfrc1y-section {
                padding: 64px 0;
            }
        }