:root {
            --hwo3t-primary: #ff6600;
            --hwo3t-secondary: #333333;
            --hwo3t-accent: #007aff;
            --hwo3t-bg-light: #f5f5f7;
            --hwo3t-white: #ffffff;
            --hwo3t-text-main: #1d1d1f;
            --hwo3t-text-mute: #86868b;
            --hwo3t-radius: 16px;
            --hwo3t-transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--hwo3t-bg-light);
            color: var(--hwo3t-text-main);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Layout Helpers */
        .hwo3t-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 48px;
            width: 100%;
        }

        @media (max-width: 768px) {
            .hwo3t-container {
                padding: 0 24px;
            }
        }

        /* Navigation */
        .hwo3t-header {
            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 rgba(0,0,0,0.05);
            height: 64px;
            display: flex;
            align-items: center;
        }

        .hwo3t-nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            flex-wrap: wrap;
        }

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

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

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

        .hwo3t-nav-item a {
            text-decoration: none;
            color: var(--hwo3t-text-main);
            font-size: 14px;
            font-weight: 500;
            transition: var(--hwo3t-transition);
            opacity: 0.8;
            white-space: nowrap;
        }

        .hwo3t-nav-item a:hover {
            color: var(--hwo3t-primary);
            opacity: 1;
        }

        .hwo3t-nav-item.hwo3t-active a {
            color: var(--hwo3t-primary);
            opacity: 1;
        }

        /* Hero Section */
        .hwo3t-hero {
            padding-top: 140px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 80% 20%, rgba(255, 102, 0, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 80%, rgba(0, 122, 255, 0.05) 0%, transparent 40%);
            text-align: center;
            overflow: hidden;
        }

        .hwo3t-hero-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .hwo3t-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            font-weight: 700;
            line-height: 1.1;
            letter-spacing: -0.02em;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #1d1d1f 0%, #434343 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            word-break: keep-all;
        }

        .hwo3t-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.5rem);
            color: var(--hwo3t-text-mute);
            margin-bottom: 48px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hwo3t-cta-group {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 64px;
        }

        .hwo3t-btn-primary {
            background: var(--hwo3t-primary);
            color: white;
            padding: 16px 48px;
            border-radius: 40px;
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
            transition: var(--hwo3t-transition);
            box-shadow: 0 10px 20px rgba(255, 102, 0, 0.2);
        }

        .hwo3t-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(255, 102, 0, 0.3);
            background: #ff751a;
        }

        /* Mockup Display */
        .hwo3t-mockup-window {
            background: var(--hwo3t-white);
            border-radius: 20px;
            box-shadow: 0 40px 100px rgba(0,0,0,0.1);
            max-width: 1000px;
            margin: 0 auto;
            overflow: hidden;
            border: 1px solid rgba(0,0,0,0.05);
            position: relative;
        }

        .hwo3t-mockup-header {
            height: 40px;
            background: #f1f1f2;
            display: flex;
            align-items: center;
            padding: 0 16px;
            gap: 8px;
        }

        .hwo3t-dot { width: 12px; height: 12px; border-radius: 50%; }
        .hwo3t-dot.red { background: #ff5f57; }
        .hwo3t-dot.yellow { background: #febc2e; }
        .hwo3t-dot.green { background: #28c840; }

        .hwo3t-mockup-body {
            padding: 60px 20px;
            background: linear-gradient(to bottom, #ffffff, #fafafa);
            min-height: 300px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .hwo3t-input-simulation {
            font-size: 24px;
            color: var(--hwo3t-text-main);
            border-right: 2px solid var(--hwo3t-primary);
            padding-right: 5px;
            animation: hwo3t-blink 1s infinite;
        }

        @keyframes hwo3t-blink {
            50% { border-color: transparent; }
        }

        /* Scenario Grid */
        .hwo3t-section {
            padding: 96px 0;
        }

        .hwo3t-section-title {
            text-align: center;
            font-size: clamp(2rem, 3vw, 3rem);
            margin-bottom: 64px;
            font-weight: 700;
        }

        .hwo3t-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            flex-wrap: wrap;
        }

        .hwo3t-card {
            background: var(--hwo3t-white);
            padding: 48px;
            border-radius: var(--hwo3t-radius);
            transition: var(--hwo3t-transition);
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .hwo3t-card:hover {
            transform: translateY(-10px);
            border-color: rgba(255, 102, 0, 0.2);
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
        }

        .hwo3t-card-icon {
            font-size: 40px;
            margin-bottom: 24px;
        }

        .hwo3t-card-type {
            font-size: 14px;
            color: var(--hwo3t-primary);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            margin-bottom: 12px;
        }

        .hwo3t-card-title {
            font-size: 24px;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .hwo3t-capability-list {
            list-style: none;
        }

        .hwo3t-capability-item {
            margin-bottom: 12px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--hwo3t-text-mute);
            font-size: 16px;
        }

        .hwo3t-capability-item::before {
            content: "•";
            color: var(--hwo3t-primary);
            font-weight: bold;
        }

        /* Feature Highlight */
        .hwo3t-feature-row {
            display: flex;
            align-items: center;
            gap: 64px;
            margin-bottom: 96px;
            flex-wrap: wrap;
        }

        .hwo3t-feature-row:nth-child(even) {
            flex-direction: row-reverse;
        }

        .hwo3t-feature-text {
            flex: 1;
            min-width: 300px;
        }

        .hwo3t-feature-visual {
            flex: 1;
            min-width: 300px;
            background: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
            border-radius: var(--hwo3t-radius);
            aspect-ratio: 16/10;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .hwo3t-visual-circle {
            width: 200px;
            height: 200px;
            background: var(--hwo3t-primary);
            filter: blur(80px);
            opacity: 0.1;
            position: absolute;
        }

        /* Footer */
        .hwo3t-footer {
            background: var(--hwo3t-white);
            padding: 80px 0 40px;
            border-top: 1px solid rgba(0,0,0,0.05);
        }

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

        .hwo3t-footer-brand {
            flex: 0 0 300px;
            min-width: 0;
        }

        .hwo3t-brand-name {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--hwo3t-text-main);
        }

        .hwo3t-footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .hwo3t-footer-col h4 {
            font-size: 14px;
            color: var(--hwo3t-text-mute);
            margin-bottom: 24px;
            text-transform: uppercase;
        }

        .hwo3t-footer-col ul {
            list-style: none;
        }

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

        .hwo3t-footer-col a {
            text-decoration: none;
            color: var(--hwo3t-text-main);
            font-size: 14px;
            transition: var(--hwo3t-transition);
        }

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

        .hwo3t-copyright {
            padding-top: 40px;
            border-top: 1px solid rgba(0,0,0,0.05);
            text-align: center;
            font-size: 12px;
            color: var(--hwo3t-text-mute);
        }

        /* Responsive Breakpoints */
        @media (max-width: 992px) {
            .hwo3t-header { height: auto; padding: 16px 0; }
            .hwo3t-nav-menu { margin-top: 16px; width: 100%; justify-content: center; }
            .hwo3t-hero { padding-top: 180px; }
        }

        @media (max-width: 768px) {
            .hwo3t-grid { grid-template-columns: 1fr; }
            .hwo3t-feature-row { gap: 32px; }
            .hwo3t-hero-title { font-size: 2.5rem; }
        }