:root {
            --hwo3t-primary: #FF6600;
            --hwo3t-primary-light: #FF8533;
            --hwo3t-dark: #1D1D1F;
            --hwo3t-gray-100: #F5F5F7;
            --hwo3t-gray-200: #E8E8ED;
            --hwo3t-gray-600: #86868B;
            --hwo3t-text: #333333;
            --hwo3t-white: #FFFFFF;
            --hwo3t-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --hwo3t-radius: 16px;
            --hwo3t-container-width: 1100px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            color: var(--hwo3t-text);
            line-height: 1.6;
            background-color: var(--hwo3t-white);
            overflow-x: hidden;
        }

        /* Fluid Typography */
        h1 { font-size: clamp(2rem, 5vw, 3.5rem); line-height: 1.2; font-weight: 800; color: var(--hwo3t-dark); }
        h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); line-height: 1.3; font-weight: 700; color: var(--hwo3t-dark); }
        h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); font-weight: 600; }
        p { font-size: clamp(1rem, 1vw + 0.5rem, 1.125rem); line-height: 1.8; color: var(--hwo3t-gray-600); }

        .hwo3t-container {
            max-width: var(--hwo3t-container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Navigation */
        .hwo3t-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--hwo3t-gray-200);
            transition: all 0.3s ease;
        }

        .hwo3t-nav-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            max-width: var(--hwo3t-container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .hwo3t-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .hwo3t-logo img {
            height: 32px;
            width: auto;
        }

        .hwo3t-nav-menu {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            list-style: none;
            min-width: 0;
        }

        .hwo3t-nav-menu a {
            text-decoration: none;
            color: var(--hwo3t-dark);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s;
            word-break: keep-all;
        }

        .hwo3t-nav-menu a:hover, .hwo3t-nav-menu a.active {
            color: var(--hwo3t-primary);
        }

        /* Hero Section */
        .hwo3t-hero {
            padding: 160px 0 96px;
            background: radial-gradient(circle at 90% 10%, #fff5ee 0%, #ffffff 60%);
            overflow: hidden;
        }

        .hwo3t-hero-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .hwo3t-hero-content {
            flex: 1;
            min-width: 320px;
            word-break: break-word;
        }

        .hwo3t-hero-subtitle {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 102, 0, 0.1);
            color: var(--hwo3t-primary);
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hwo3t-hero-visual {
            flex: 1;
            min-width: 320px;
            position: relative;
        }

        /* Unique Visual: Shortcut Key Elements */
        .hwo3t-key-visual {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            perspective: 1000px;
        }

        .hwo3t-key-cap {
            background: var(--hwo3t-white);
            border: 2px solid var(--hwo3t-gray-200);
            border-radius: 12px;
            padding: 32px 16px;
            text-align: center;
            box-shadow: 0 4px 0 var(--hwo3t-gray-200);
            transition: all 0.2s ease;
            cursor: pointer;
            min-width: 0;
        }

        .hwo3t-key-cap:hover {
            transform: translateY(2px);
            box-shadow: 0 2px 0 var(--hwo3t-gray-200);
            border-color: var(--hwo3t-primary);
        }

        .hwo3t-key-cap span {
            display: block;
            font-weight: 800;
            font-size: 20px;
            color: var(--hwo3t-dark);
        }

        .hwo3t-key-cap small {
            color: var(--hwo3t-primary);
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* Settings Tutorial Section */
        .hwo3t-section {
            padding: 96px 0;
            word-break: break-word;
        }

        .hwo3t-section-alt {
            background-color: var(--hwo3t-gray-100);
        }

        .hwo3t-section-header {
            max-width: 700px;
            margin-bottom: 64px;
        }

        .hwo3t-step-card {
            display: flex;
            flex-wrap: wrap;
            background: var(--hwo3t-white);
            border-radius: var(--hwo3t-radius);
            overflow: hidden;
            box-shadow: var(--hwo3t-shadow);
            margin-bottom: 32px;
            min-width: 0;
        }

        .hwo3t-step-info {
            flex: 1;
            padding: 48px;
            min-width: 300px;
        }

        .hwo3t-step-num {
            width: 40px;
            height: 40px;
            background: var(--hwo3t-primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin-bottom: 24px;
        }

        /* Scenario Section */
        .hwo3t-scenario-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .hwo3t-scenario-card {
            background: var(--hwo3t-white);
            padding: 40px;
            border-radius: var(--hwo3t-radius);
            border: 1px solid var(--hwo3t-gray-200);
            transition: transform 0.3s ease, border-color 0.3s ease;
            min-width: 0;
        }

        .hwo3t-scenario-card:hover {
            transform: translateY(-8px);
            border-color: var(--hwo3t-primary);
        }

        .hwo3t-capability-tag {
            display: inline-block;
            padding: 4px 12px;
            background: var(--hwo3t-gray-100);
            border-radius: 6px;
            font-size: 13px;
            margin: 4px;
            color: var(--hwo3t-gray-600);
            word-break: keep-all;
        }

        /* Dynamic Content Area */
        .hwo3t-news-list {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .hwo3t-news-item {
            flex: 1;
            min-width: 280px;
            padding: 24px;
            border-left: 4px solid var(--hwo3t-primary);
            background: var(--hwo3t-white);
        }

        /* Footer */
        .hwo3t-footer {
            background: var(--hwo3t-dark);
            color: var(--hwo3t-white);
            padding: 80px 0 40px;
        }

        .hwo3t-footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 64px;
        }

        .hwo3t-footer-brand {
            flex: 2;
            min-width: 260px;
        }

        .hwo3t-footer-brand h2 {
            color: var(--hwo3t-white);
            margin-bottom: 16px;
        }

        .hwo3t-footer-links {
            flex: 1;
            min-width: 150px;
            list-style: none;
        }

        .hwo3t-footer-links li {
            margin-bottom: 12px;
        }

        .hwo3t-footer-links a {
            color: var(--hwo3t-gray-600);
            text-decoration: none;
            transition: color 0.3s;
        }

        .hwo3t-footer-links a:hover {
            color: var(--hwo3t-primary);
        }

        .hwo3t-copyright {
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            color: var(--hwo3t-gray-600);
            font-size: 14px;
        }

        /* Responsive Adjustments */
        @media (max-width: 768px) {
            .hwo3t-nav-inner { height: auto; padding: 16px 24px; }
            .hwo3t-nav-menu { width: 100%; justify-content: center; margin-top: 16px; gap: 12px; }
            .hwo3t-hero { padding: 120px 0 64px; text-align: center; }
            .hwo3t-hero-grid { flex-direction: column; }
            .hwo3t-step-info { padding: 32px 24px; }
        }