:root {
            --umkciz-primary: #EE4844;
            --umkciz-primary-dark: #D63D39;
            --umkciz-bg: #F8FAFC;
            --umkciz-text: #1E293B;
            --umkciz-text-light: #64748B;
            --umkciz-white: #FFFFFF;
            --umkciz-glass: rgba(255, 255, 255, 0.85);
            --umkciz-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.05);
            --umkciz-radius: 20px;
            --umkciz-max-width: 1100px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", sans-serif;
            background-color: var(--umkciz-bg);
            color: var(--umkciz-text);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Navigation */
        .umkciz-nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 24px;
            transition: all 0.3s ease;
        }

        .umkciz-nav-container {
            max-width: var(--umkciz-max-width);
            margin: 0 auto;
            background: var(--umkciz-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: 50px;
            padding: 8px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--umkciz-shadow);
            border: 1px solid rgba(255, 255, 255, 0.3);
            flex-wrap: wrap;
        }

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

        .umkciz-logo img {
            height: 32px;
            width: auto;
        }

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

        .umkciz-menu li a {
            text-decoration: none;
            color: var(--umkciz-text);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 20px;
            transition: all 0.2s ease;
        }

        .umkciz-menu li a:hover {
            color: var(--umkciz-primary);
            background: rgba(238, 72, 68, 0.05);
        }

        .umkciz-menu li a.umkciz-active {
            background: var(--umkciz-primary);
            color: var(--umkciz-white);
        }

        /* Hero Section */
        .umkciz-hero {
            padding: 160px 24px 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .umkciz-hero::before {
            content: "";
            position: absolute;
            top: -10%;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 60%;
            background: radial-gradient(circle, rgba(238, 72, 68, 0.08) 0%, transparent 70%);
            z-index: -1;
        }

        .umkciz-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .umkciz-hero-title {
            font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #1E293B 0%, #475569 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .umkciz-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--umkciz-text-light);
            margin-bottom: 48px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .umkciz-download-box {
            background: var(--umkciz-white);
            padding: 40px;
            border-radius: var(--umkciz-radius);
            box-shadow: 0 20px 50px rgba(0,0,0,0.08);
            display: inline-flex;
            flex-direction: column;
            align-items: center;
            gap: 24px;
            border: 1px solid rgba(0,0,0,0.02);
            transition: transform 0.3s ease;
        }

        .umkciz-download-box:hover {
            transform: translateY(-5px);
        }

        .umkciz-btn-primary {
            background: var(--umkciz-primary);
            color: var(--umkciz-white);
            padding: 18px 48px;
            border-radius: 40px;
            text-decoration: none;
            font-size: 1.2rem;
            font-weight: 600;
            box-shadow: 0 10px 20px rgba(238, 72, 68, 0.2);
            transition: all 0.3s ease;
            display: inline-block;
        }

        .umkciz-btn-primary:hover {
            background: var(--umkciz-primary-dark);
            box-shadow: 0 15px 30px rgba(238, 72, 68, 0.3);
            transform: scale(1.02);
        }

        .umkciz-version-info {
            font-size: 0.85rem;
            color: var(--umkciz-text-light);
        }

        /* Features Grid */
        .umkciz-section {
            padding: 80px 24px;
            max-width: var(--umkciz-max-width);
            margin: 0 auto;
        }

        .umkciz-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            flex-wrap: wrap;
        }

        .umkciz-card {
            background: var(--umkciz-white);
            padding: 40px;
            border-radius: var(--umkciz-radius);
            transition: all 0.3s ease;
            border: 1px solid transparent;
            min-width: 0;
        }

        .umkciz-card:hover {
            border-color: rgba(238, 72, 68, 0.1);
            box-shadow: var(--umkciz-shadow);
        }

        .umkciz-card-icon {
            width: 56px;
            height: 56px;
            background: rgba(238, 72, 68, 0.05);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            font-size: 24px;
            color: var(--umkciz-primary);
        }

        .umkciz-card h3 {
            margin-bottom: 16px;
            font-size: 1.5rem;
        }

        /* Distro Support Section */
        .umkciz-distros {
            background: #111827;
            color: var(--umkciz-white);
            padding: 96px 24px;
            border-radius: 40px;
            margin: 40px 24px;
        }

        .umkciz-distro-content {
            max-width: var(--umkciz-max-width);
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 64px;
            flex-wrap: wrap;
        }

        .umkciz-distro-text {
            flex: 1;
            min-width: 300px;
        }

        .umkciz-distro-text h2 {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            margin-bottom: 24px;
        }

        .umkciz-distro-list {
            flex: 1;
            min-width: 300px;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .umkciz-distro-item {
            background: rgba(255,255,255,0.05);
            padding: 20px;
            border-radius: 16px;
            text-align: center;
            border: 1px solid rgba(255,255,255,0.1);
        }

        /* Installation Section */
        .umkciz-install-guide {
            display: flex;
            gap: 48px;
            align-items: center;
            flex-wrap: wrap;
        }

        .umkciz-install-steps {
            flex: 1;
            min-width: 300px;
        }

        .umkciz-step {
            display: flex;
            gap: 24px;
            margin-bottom: 32px;
        }

        .umkciz-step-num {
            flex: 0 0 40px;
            height: 40px;
            background: var(--umkciz-primary);
            color: var(--umkciz-white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .umkciz-terminal {
            flex: 1;
            min-width: 300px;
            background: #0F172A;
            color: #38BDF8;
            padding: 32px;
            border-radius: 12px;
            font-family: 'Courier New', Courier, monospace;
            box-shadow: 0 30px 60px rgba(0,0,0,0.2);
            position: relative;
        }

        .umkciz-terminal::before {
            content: "•••";
            position: absolute;
            top: 12px;
            left: 16px;
            color: #475569;
            letter-spacing: 4px;
        }

        /* Footer */
        .umkciz-footer {
            background: var(--umkciz-white);
            padding: 80px 24px 40px;
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        .umkciz-footer-container {
            max-width: var(--umkciz-max-width);
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            gap: 48px;
            flex-wrap: wrap;
        }

        .umkciz-footer-brand h2 {
            color: var(--umkciz-primary);
            margin-bottom: 16px;
            font-size: 1.5rem;
        }

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

        .umkciz-link-group h4 {
            margin-bottom: 20px;
            color: var(--umkciz-text);
        }

        .umkciz-link-group ul {
            list-style: none;
        }

        .umkciz-link-group ul li {
            margin-bottom: 12px;
        }

        .umkciz-link-group ul li a {
            text-decoration: none;
            color: var(--umkciz-text-light);
            font-size: 0.9rem;
            transition: color 0.2s;
        }

        .umkciz-link-group ul li a:hover {
            color: var(--umkciz-primary);
        }

        .umkciz-copyright {
            max-width: var(--umkciz-max-width);
            margin: 64px auto 0;
            padding-top: 32px;
            border-top: 1px solid rgba(0,0,0,0.05);
            text-align: center;
            color: var(--umkciz-text-light);
            font-size: 0.85rem;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .umkciz-nav-container {
                border-radius: 20px;
                padding: 12px;
            }
            .umkciz-menu {
                display: none; /* In a real app, use a hamburger menu */
            }
            .umkciz-hero {
                padding-top: 120px;
            }
            .umkciz-distros {
                margin: 20px 12px;
                padding: 48px 20px;
            }
            .umkciz-distro-list {
                grid-template-columns: 1fr;
            }
        }