/* ==============================
           Design Tokens — 極致未來科技風
           ============================== */
        :root {
            --bg-primary: #000a14;
            --bg-secondary: transparent;
            --bg-card: rgba(5, 15, 30, 0.65);
            --bg-card-hover: rgba(10, 30, 60, 0.8);

            --accent-blue: #4f8fff;
            --accent-cyan: #00e5ff;
            --accent-purple: #a855f7;
            --accent-gradient: linear-gradient(135deg, #4f8fff 0%, #00e5ff 50%, #a855f7 100%);
            --accent-gradient-fast: linear-gradient(90deg, #4f8fff, #00e5ff, #a855f7, #00e5ff, #4f8fff);
            --neon-glow: 0 0 10px rgba(0, 229, 255, 0.5), 0 0 30px rgba(0, 229, 255, 0.3), 0 0 60px rgba(79, 143, 255, 0.2), 0 0 100px rgba(168, 85, 247, 0.1);
            --neon-glow-strong: 0 0 15px rgba(0, 229, 255, 0.8), 0 0 40px rgba(0, 229, 255, 0.5), 0 0 80px rgba(79, 143, 255, 0.35), 0 0 120px rgba(168, 85, 247, 0.15);
            --text-glow: 0 0 4px rgba(0, 229, 255, 0.4), 0 0 12px rgba(0, 229, 255, 0.2);
            --text-glow-strong: 0 0 6px rgba(0, 229, 255, 0.6), 0 0 20px rgba(0, 229, 255, 0.3), 0 0 40px rgba(79, 143, 255, 0.2);

            --text-primary: #e8f4ff;
            --text-secondary: #94b8d4;
            --text-muted: #4a6a8a;

            --border-color: rgba(0, 229, 255, 0.15);
            --border-glow: rgba(0, 229, 255, 0.6);

            --bg-section-light: #f7fbff;
            --bg-section-text-dark: #0d2542;
            --bg-section-border: rgba(15, 102, 178, 0.15);

            --section-padding: 100px 0;
            --container-width: 1200px;

            --font-display: 'Orbitron', sans-serif;
            --font-heading: 'Inter', 'Noto Sans TC', sans-serif;
            --font-body: 'Noto Sans TC', 'Inter', sans-serif;

            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
        }

        /* ==============================
           Reset & Base
           ============================== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
        }

        /* 全局掃描線覆蓋 — 螢幕科幻感 */
        body::after {
            content: '';
            position: fixed;
            inset: 0;
            background: repeating-linear-gradient(
                0deg,
                transparent,
                transparent 2px,
                rgba(0, 229, 255, 0.015) 2px,
                rgba(0, 229, 255, 0.015) 4px
            );
            pointer-events: none;
            z-index: 9998;
        }

        /* 浮動光球裝飾 */
        .orb {
            position: fixed;
            border-radius: 50%;
            filter: blur(80px);
            pointer-events: none;
            z-index: -1;
            animation: orbFloat 12s ease-in-out infinite alternate;
        }
        .orb-1 { width: 400px; height: 400px; background: rgba(79, 143, 255, 0.08); top: 10%; left: -5%; animation-duration: 14s; }
        .orb-2 { width: 350px; height: 350px; background: rgba(0, 229, 255, 0.06); top: 50%; right: -8%; animation-duration: 18s; animation-delay: -4s; }
        .orb-3 { width: 300px; height: 300px; background: rgba(168, 85, 247, 0.05); bottom: 10%; left: 30%; animation-duration: 16s; animation-delay: -8s; }
        @keyframes orbFloat {
            0% { transform: translate(0, 0) scale(1); }
            50% { transform: translate(30px, -40px) scale(1.15); }
            100% { transform: translate(-20px, 20px) scale(0.9); }
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        /* ==============================
           Utility Classes
           ============================== */
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .hero-container {
            position: relative;
            z-index: 2;
        }

        .text-center {
            text-align: center;
        }

        .section-lead {
            color: var(--text-secondary);
            max-width: 600px;
        }

        .section-lead-center {
            margin: 0 auto;
            text-align: center;
        }

        .section-lead-narrow {
            max-width: 500px;
        }

        .inline-link {
            color: var(--accent-cyan);
            text-decoration: underline;
        }

        .accent-highlight {
            color: var(--accent-cyan);
            font-weight: 700;
        }

        .section-label {
            font-family: var(--font-display);
            font-size: 0.75rem;
            letter-spacing: 0.3em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 16px;
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
            position: relative;
            display: inline-block;
        }
        .section-label::before {
            content: '// ';
            opacity: 0.4;
        }
        .section-label::after {
            content: '';
            display: block;
            width: 40px;
            height: 1px;
            background: var(--accent-gradient);
            margin-top: 10px;
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
        }

        .section-title {
            font-family: var(--font-display);
            font-size: clamp(2rem, 5vw, 3rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            text-shadow: var(--text-glow);
            letter-spacing: 0.05em;
        }

        .gradient-text {
            background: var(--accent-gradient);
            background-size: 200% 200%;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: shimmerGradient 4s ease-in-out infinite;
        }
        @keyframes shimmerGradient {
            0%, 100% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
        }

        /* ==============================
           Buttons
           ============================== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 16px 32px;
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            border: none;
            text-decoration: none;
        }

        .btn-primary {
            background: var(--accent-gradient);
            background-size: 200% 200%;
            color: white;
            box-shadow: 0 4px 20px rgba(0, 229, 255, 0.3), 0 0 40px rgba(79, 143, 255, 0.15);
            animation: shimmerGradient 4s ease-in-out infinite;
            position: relative;
            overflow: hidden;
        }
        .btn-primary::before {
            content: '';
            position: absolute;
            top: -50%; left: -50%;
            width: 200%; height: 200%;
            background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
            transform: translateX(-100%);
            transition: none;
        }
        .btn-primary:hover::before {
            animation: btnSheen 0.6s forwards;
        }
        @keyframes btnSheen {
            100% { transform: translateX(100%); }
        }

        .btn-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: var(--neon-glow-strong);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .btn-outline::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.05), rgba(168, 85, 247, 0.05));
            opacity: 0;
            transition: opacity 0.3s;
        }
        .btn-outline:hover::before { opacity: 1; }

        .btn-outline:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
        }

        /* ==============================
           Navigation
           ============================== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 20px 0;
            background: rgba(0, 8, 20, 0.85);
            backdrop-filter: blur(25px) saturate(1.5);
            -webkit-backdrop-filter: blur(25px) saturate(1.5);
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
            transition: var(--transition);
        }
        .navbar::after {
            content: '';
            position: absolute;
            bottom: 0; left: 0; right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.4), rgba(168, 85, 247, 0.3), transparent);
        }

        .navbar.scrolled {
            padding: 12px 0;
            background: rgba(10, 22, 40, 0.98);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-icon {
            min-width: 44px;
            width: auto;
            padding: 0 10px;
            height: 44px;
            background: var(--accent-gradient);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-display);
            font-weight: 900;
            font-size: 1.2rem;
            color: white;
        }

        .logo-text {
            font-family: var(--font-display);
            font-size: 1.1rem;
            font-weight: 700;
            letter-spacing: 0.05em;
        }

        .logo-subtitle {
            font-size: 0.65rem;
            color: var(--text-muted);
            letter-spacing: 0.1em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 40px;
            list-style: none;
        }

        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gradient);
            transition: var(--transition);
        }

        .nav-links a:hover {
            color: var(--text-primary);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-cta {
            padding: 12px 24px;
            font-size: 0.9rem;
        }

        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-menu-btn span {
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            transition: var(--transition);
        }

        /* ==============================
           Hero Section
           ============================== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            padding-top: 100px;
        }

        #canvas-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            z-index: -2;
            pointer-events: none;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse 60% 50% at 20% 50%, rgba(79, 143, 255, 0.12) 0%, transparent 70%),
                radial-gradient(ellipse 50% 40% at 80% 30%, rgba(0, 229, 255, 0.1) 0%, transparent 70%),
                radial-gradient(ellipse 40% 50% at 50% 80%, rgba(168, 85, 247, 0.06) 0%, transparent 60%);
            z-index: -1;
            pointer-events: none;
        }

        .hero-grid {
            position: absolute;
            bottom: -20%;
            left: -50%;
            width: 200%;
            height: 70%;
            background-image:
                linear-gradient(rgba(0, 229, 255, 0.12) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 229, 255, 0.12) 1px, transparent 1px);
            background-size: 80px 80px;
            transform: perspective(600px) rotateX(75deg);
            z-index: 1;
            animation: gridMove 8s linear infinite;
            mask-image: linear-gradient(transparent, black 30%, black 80%, transparent);
            -webkit-mask-image: linear-gradient(transparent, black 30%, black 80%, transparent);
        }

        @keyframes gridMove {
            0% { transform: perspective(600px) rotateX(75deg) translateY(0); }
            100% { transform: perspective(600px) rotateX(75deg) translateY(80px); }
        }

        /* HUD 角落裝飾 */
        .hero::after {
            content: '';
            position: absolute;
            top: 120px; left: 40px;
            width: 60px; height: 60px;
            border-left: 2px solid rgba(0, 229, 255, 0.3);
            border-top: 2px solid rgba(0, 229, 255, 0.3);
            z-index: 3;
            animation: hudPulse 3s ease-in-out infinite;
        }
        @keyframes hudPulse {
            0%, 100% { opacity: 0.4; }
            50% { opacity: 1; }
        }

        .hero-content {
            max-width: 800px;
        }

        .hero-label {
            display: inline-block;
            padding: 8px 20px;
            background: rgba(0, 229, 255, 0.06);
            border: 1px solid rgba(0, 229, 255, 0.25);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.15em;
            color: var(--accent-cyan);
            margin-bottom: 24px;
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
            animation: labelPulse 3s ease-in-out infinite;
            position: relative;
            overflow: hidden;
        }
        .hero-label::before {
            content: '';
            position: absolute;
            top: 0; left: -100%;
            width: 100%; height: 100%;
            background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.15), transparent);
            animation: labelSweep 3s ease-in-out infinite;
        }
        @keyframes labelPulse {
            0%, 100% { border-color: rgba(0, 229, 255, 0.25); box-shadow: 0 0 10px rgba(0, 229, 255, 0.1); }
            50% { border-color: rgba(0, 229, 255, 0.5); box-shadow: 0 0 20px rgba(0, 229, 255, 0.2); }
        }
        @keyframes labelSweep {
            0% { left: -100%; }
            50%, 100% { left: 100%; }
        }

        .hero-title {
            font-family: var(--font-display);
            font-size: clamp(2.5rem, 6vw, 4rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            text-shadow: var(--text-glow-strong);
            letter-spacing: 0.05em;
        }

        .hero-subtitle {
            font-size: 1.125rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 40px;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 60px;
            padding-top: 40px;
            border-top: 1px solid rgba(0, 229, 255, 0.15);
            position: relative;
        }
        .hero-stats::before {
            content: '';
            position: absolute;
            top: 0; left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, rgba(0, 229, 255, 0.6), rgba(168, 85, 247, 0.3), transparent);
        }

        .stat-item {
            text-align: left;
            position: relative;
        }

        .stat-value {
            font-family: var(--font-display);
            font-size: 2.5rem;
            font-weight: 800;
            background: var(--accent-gradient);
            background-size: 200% 200%;
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            animation: shimmerGradient 4s ease-in-out infinite;
            text-shadow: none;
            filter: drop-shadow(0 0 12px rgba(0, 229, 255, 0.3));
        }

        .stat-label {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-top: 4px;
            letter-spacing: 0.05em;
        }

        /* ==============================
           GPU Cards Section
           ============================== */
        .gpu-section {
            padding: var(--section-padding);
            background: var(--bg-secondary);
        }

        .gpu-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
            margin-top: 48px;
        }

        .gpu-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(1.4);
            -webkit-backdrop-filter: blur(16px) saturate(1.4);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
        }

        .gpu-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 2px;
            background: var(--accent-gradient-fast);
            background-size: 300% 100%;
            animation: borderFlow 3s linear infinite;
            opacity: 0.5;
            transition: opacity 0.4s;
        }
        @keyframes borderFlow {
            0% { background-position: 0% 0%; }
            100% { background-position: 300% 0%; }
        }

        .gpu-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.03), transparent 50%, rgba(168, 85, 247, 0.03));
            pointer-events: none;
            transition: opacity 0.4s;
            opacity: 0;
        }

        .gpu-card:hover {
            transform: translateY(-10px) scale(1.01);
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: var(--neon-glow);
        }

        .gpu-card:hover::before {
            opacity: 1;
        }
        .gpu-card:hover::after {
            opacity: 1;
        }

        .gpu-card-header {
            padding: 24px;
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
        }

        .gpu-name {
            font-family: var(--font-display);
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: 0.05em;
        }

        .gpu-series {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .gpu-price-badge {
            background: var(--accent-gradient);
            color: white;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
        }

        .gpu-image {
            height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(180deg, transparent, rgba(59, 130, 246, 0.05));
            padding: 20px;
            position: relative;
        }

        .gpu-image img {
            max-height: 100%;
            object-fit: contain;
            filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.4));
        }

        .gpu-image-fallback {
            font-family: var(--font-display);
            font-size: 2.5rem;
            letter-spacing: 0.08em;
            color: rgba(232, 244, 255, 0.7);
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
        }

        .gpu-specs {
            padding: 24px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            border-top: 1px solid var(--border-color);
        }

        .spec-item {
            text-align: center;
        }

        .spec-value {
            font-family: var(--font-display);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-cyan);
        }

        .spec-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ==============================
           Pricing Section
           ============================== */
        .pricing-section {
            padding: var(--section-padding);
            background: transparent;
        }

        .pricing-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
            max-width: 900px;
            margin: 0 auto;
        }

        .pricing-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(1.4);
            -webkit-backdrop-filter: blur(16px) saturate(1.4);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: visible;
        }
        .pricing-card::after {
            content: '';
            position: absolute;
            bottom: 0; left: 0; right: 0;
            height: 2px;
            background: var(--accent-gradient-fast);
            background-size: 300% 100%;
            animation: borderFlow 3s linear infinite;
            opacity: 0.3;
        }

        .pricing-card.featured {
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: var(--neon-glow);
        }

        .pricing-card.featured::before {
            content: '推薦';
            position: absolute;
            top: -12px;
            right: 24px;
            background: var(--accent-gradient);
            color: white;
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            box-shadow: 0 0 15px rgba(0, 229, 255, 0.4);
            letter-spacing: 0.1em;
        }

        .pricing-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.1), 0 15px 40px rgba(0, 0, 0, 0.3);
        }
        .pricing-card:hover::after { opacity: 1; }

        .pricing-gpu-name {
            font-family: var(--font-display);
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .pricing-gpu-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .pricing-price {
            display: flex;
            align-items: baseline;
            gap: 8px;
            margin-bottom: 32px;
        }

        .price-amount {
            font-family: var(--font-display);
            font-size: 3rem;
            font-weight: 800;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .price-unit {
            font-size: 1rem;
            color: var(--text-muted);
        }

        .pricing-features {
            list-style: none;
            margin-bottom: 32px;
        }

        .pricing-features li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(59, 130, 246, 0.1);
            font-size: 0.95rem;
            color: var(--text-secondary);
        }

        .pricing-features li::before {
            content: '✓';
            color: var(--accent-cyan);
            font-weight: 700;
        }

        .pricing-cta {
            width: 100%;
            justify-content: center;
        }

        /* 專案方案區 */
        .enterprise-banner {
            margin-top: 48px;
            padding: 40px;
            background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(59, 130, 246, 0.05));
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            text-align: center;
        }

        .enterprise-banner h3 {
            font-size: 1.5rem;
            margin-bottom: 12px;
        }

        .enterprise-banner p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        /* ==============================
           Features Section
           ============================== */
        .features-section {
            padding: var(--section-padding);
            background: var(--bg-secondary);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }

        .feature-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(1.4);
            -webkit-backdrop-filter: blur(16px) saturate(1.4);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px;
            text-align: center;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 2px;
            background: var(--accent-gradient-fast);
            background-size: 300% 100%;
            animation: borderFlow 4s linear infinite;
            opacity: 0;
            transition: opacity 0.4s;
        }
        .feature-card::after {
            content: '';
            position: absolute;
            top: -50%; left: -50%;
            width: 200%; height: 200%;
            background: conic-gradient(from 0deg, transparent, rgba(0, 229, 255, 0.05), transparent 30%);
            animation: rotScan 6s linear infinite;
            opacity: 0;
            transition: opacity 0.4s;
        }
        @keyframes rotScan {
            100% { transform: rotate(360deg); }
        }

        .feature-card:hover {
            border-color: rgba(0, 229, 255, 0.35);
            transform: translateY(-8px);
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.1), 0 20px 40px rgba(0, 0, 0, 0.3);
        }
        .feature-card:hover::before { opacity: 1; }
        .feature-card:hover::after { opacity: 1; }

        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.12);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            position: relative;
            z-index: 1;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
            border-color: rgba(0, 229, 255, 0.3);
        }

        .feature-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .feature-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            position: relative;
            z-index: 1;
        }

        .section-dark {
            padding: var(--section-padding);
            background: var(--bg-secondary);
            color: var(--text-primary);
        }

        .section-light {
            padding: var(--section-padding);
            background: var(--bg-section-light);
            color: var(--bg-section-text-dark);
        }

        .about-section,
        .news-section,
        .esg-section {
            /* 默認使用 section-light/section-dark 由 HTML 決定 */
        }

        .section-light .section-title,
        .section-light .section-lead,
        .section-light .feature-desc,
        .section-light .about-card p,
        .section-light .news-card p,
        .section-light .esg-card p,
        .section-light .contact-info p,
        .section-light .contact-label,
        .section-light .contact-value {
            color: var(--bg-section-text-dark);
        }

        .section-light .section-label {
            color: #0068c7;
            text-shadow: none;
        }

        .section-light .section-title {
            text-shadow: none;
        }

        .section-light .feature-card,
        .section-light .about-card,
        .section-light .news-card,
        .section-light .esg-card,
        .section-light .pricing-card,
        .section-light .faq-item,
        .section-light .contact-form,
        .section-light .contact-info,
        .section-light .footer {
            background: rgba(255, 255, 255, 0.8);
            border-color: var(--bg-section-border);
            color: var(--bg-section-text-dark);
        }

        .about-grid,
        .news-grid,
        .esg-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .about-card,
        .news-card,
        .esg-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(1.4);
            -webkit-backdrop-filter: blur(16px) saturate(1.4);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition);
        }

        .about-card:hover,
        .news-card:hover,
        .esg-card:hover {
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: var(--neon-glow);
            transform: translateY(-6px);
        }

        .about-card h3,
        .news-card h3,
        .esg-card h3 {
            margin-bottom: 12px;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .about-card p,
        .news-card p,
        .esg-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .news-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 700;
            color: #0af1ff;
            background: rgba(0, 229, 255, 0.15);
            margin-bottom: 10px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .news-card a.inline-link {
            display: inline-block;
            margin-top: 14px;
            color: var(--accent-cyan);
            font-weight: 600;
        }

        /* ==============================
           Contact Section
           ============================== */
        .contact-section {
            padding: var(--section-padding);
            background: transparent;
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 64px;
            align-items: start;
        }

        .contact-info h2 {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }

        .contact-info>p {
            color: var(--text-secondary);
            margin-bottom: 40px;
        }

        .contact-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .contact-icon {
            width: 48px;
            height: 48px;
            background: rgba(59, 130, 246, 0.1);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            flex-shrink: 0;
        }

        .contact-label {
            font-size: 0.85rem;
            color: var(--accent-cyan);
            margin-bottom: 4px;
        }

        .contact-value {
            font-size: 1rem;
            color: var(--text-primary);
        }

        .contact-map {
            margin-top: 32px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .contact-map iframe {
            width: 100%;
            height: 200px;
            border: none;
            filter: grayscale(0.5) contrast(1.1);
        }

        /* 表單 */
        .contact-form {
            background: var(--bg-card);
            backdrop-filter: blur(16px) saturate(1.4);
            -webkit-backdrop-filter: blur(16px) saturate(1.4);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px;
            position: relative;
            overflow: hidden;
        }
        .contact-form::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 2px;
            background: var(--accent-gradient-fast);
            background-size: 300% 100%;
            animation: borderFlow 4s linear infinite;
        }

        .form-title {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 32px;
            font-family: var(--font-display);
            letter-spacing: 0.05em;
            text-shadow: var(--text-glow);
        }

        .form-row {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-label {
            display: block;
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 8px;
            color: var(--text-secondary);
        }

        .form-input,
        .form-select,
        .form-textarea {
            width: 100%;
            padding: 14px 16px;
            background: rgba(0, 8, 20, 0.7);
            border: 1px solid rgba(0, 229, 255, 0.1);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-family: var(--font-body);
            font-size: 1rem;
            transition: var(--transition);
        }

        .form-input:focus,
        .form-select:focus,
        .form-textarea:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.12), 0 0 15px rgba(0, 229, 255, 0.1);
            background: rgba(0, 12, 28, 0.9);
        }

        .form-input::placeholder,
        .form-textarea::placeholder {
            color: var(--text-muted);
        }

        .form-select {
            cursor: pointer;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2300e5ff' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
        }

        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }

        .form-submit {
            width: 100%;
            padding: 16px;
            font-size: 1.1rem;
        }
        .form-submit:disabled {
            transform: none !important;
            height: 50px;       /* 固定高度，和正常狀態一致 */
            line-height: 1.2;   /* 保持原本行高 */
        }
        .spin-icon {
            animation: spin 1s linear infinite;
        }
        .logo-img {
        height: 28px;
        width: auto;
        object-fit: contain;
        margin-right: 4px;
        }
        @keyframes spin {
            100% { transform: rotate(360deg); }
        }

        .honeypot {
            display: none;
        }

        .form-status {
            display: none;
            margin-bottom: 20px;
            padding: 16px;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 600;
        }

        .form-status.is-visible {
            display: block;
        }

        .form-status.status-error {
            background-color: rgba(239, 68, 68, 0.1);
            color: #ef4444;
            border: 1px solid rgba(239, 68, 68, 0.2);
        }

        .form-status.status-success {
            background-color: rgba(16, 185, 129, 0.1);
            color: #10b981;
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

        /* ==============================
           Footer
           ============================== */
        .footer {
            background: rgba(0, 4, 12, 0.8);
            border-top: 1px solid var(--border-color);
            padding: 40px 0;
            position: relative;
        }
        .footer::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.4), rgba(168, 85, 247, 0.3), transparent);
        }

        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 24px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .footer-logo {
            font-family: var(--font-display);
            font-size: 1rem;
            font-weight: 700;
            text-shadow: var(--text-glow);
        }

        .footer-divider {
            width: 1px;
            height: 20px;
            background: var(--border-color);
        }

        .footer-company {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-links {
            display: flex;
            gap: 32px;
        }

        .footer-links a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent-cyan);
        }

        .footer-copyright {
            width: 100%;
            text-align: center;
            padding-top: 24px;
            margin-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ==============================
           FAQ Section
           ============================== */
        .faq-section {
            padding: var(--section-padding);
            background: transparent;
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
        }

        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.06);
        }
        .faq-item.active {
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: 0 0 25px rgba(0, 229, 255, 0.08);
        }

        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            font-family: var(--font-body);
        }

        .faq-icon {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            transition: transform 0.3s ease;
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .faq-item.active .faq-answer {
            padding: 0 24px 24px;
            max-height: 300px;
        }

        /* ==============================
           Animations
           ============================== */
        .js .animate-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease-out, transform 0.8s ease-out;
        }

        .js .animate-in.in-view {
            opacity: 1;
            transform: translateY(0);
        }

        .delay-1 { transition-delay: 0.1s; }
        .delay-2 { transition-delay: 0.2s; }
        .delay-3 { transition-delay: 0.3s; }
        .delay-4 { transition-delay: 0.4s; }



        /* ==============================
           Responsive
           ============================== */
        /* ==============================
           Cookie Consent Banner
           ============================== */
        .cookie-banner {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 9999;
            background: rgba(30, 58, 138, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            padding: 16px 24px;
            display: none;
            align-items: center;
            justify-content: center;
            gap: 24px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-top: 1px solid rgba(59, 130, 246, 0.3);
        }

        .cookie-banner.show {
            display: flex;
        }

        .cookie-banner p {
            margin: 0;
            flex: 1;
            text-align: center;
        }

        .cookie-banner a {
            color: var(--accent-cyan);
            text-decoration: underline;
        }

        .cookie-btn {
            padding: 8px 28px;
            background: var(--accent-gradient);
            color: white;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            white-space: nowrap;
            transition: var(--transition);
        }

        .cookie-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
        }

        @media (max-width: 768px) {
            .cookie-banner {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }

        /* ==============================
           Comparison Section
           ============================== */
        .compare-section {
            padding: var(--section-padding);
            background: transparent;
        }

        .compare-table-wrapper {
            max-width: 900px;
            margin: 48px auto 0;
            overflow-x: auto;
            position: relative;
        }

        .compare-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            backdrop-filter: blur(12px);
        }

        .compare-table th,
        .compare-table td {
            padding: 16px 24px;
            text-align: center;
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
        }

        .compare-table thead th {
            background: rgba(0, 229, 255, 0.06);
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: 0.05em;
            color: var(--accent-cyan);
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
        }

        .compare-table thead th:first-child {
            text-align: left;
        }

        .compare-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--text-primary);
        }

        .compare-table tbody td {
            color: var(--text-secondary);
        }

        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }

        .compare-table tbody tr:hover {
            background: rgba(0, 229, 255, 0.04);
        }

        .compare-recommend {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--accent-gradient);
            color: white;
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.3);
        }

        .compare-note {
            max-width: 700px;
            margin: 32px auto 0;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .spec-disclaimer {
            max-width: 780px;
            margin: 16px auto 0;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.82rem;
            line-height: 1.6;
        }

        .faq-list-spaced {
            margin-top: 32px;
        }

        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .contact-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 22, 40, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: 24px;
                gap: 0;
                border-bottom: 1px solid var(--border-color);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links li {
                width: 100%;
            }

            .nav-links a {
                display: block;
                padding: 14px 0;
                font-size: 1.05rem;
                border-bottom: 1px solid rgba(59, 130, 246, 0.1);
            }

            .nav-links li:last-child a {
                border-bottom: none;
            }

            .nav-cta {
                display: none;
            }

            .mobile-menu-btn {
                display: flex;
            }

            /* 漢堡變 X 動畫 */
            .mobile-menu-btn.active span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }

            .mobile-menu-btn.active span:nth-child(2) {
                opacity: 0;
            }

            .mobile-menu-btn.active span:nth-child(3) {
                transform: rotate(-45deg) translate(5px, -5px);
            }

            .gpu-grid,
            .pricing-grid {
                grid-template-columns: 1fr;
            }

            .hero-stats {
                flex-direction: column;
                gap: 24px;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

            .features-grid {
                grid-template-columns: 1fr;
            }

            .footer-content {
                flex-direction: column;
                text-align: center;
            }

            .footer-links {
                flex-wrap: wrap;
                justify-content: center;
            }
        }

        /* ==============================
           無障礙 & 效能優化
           ============================== */
        /* 尊重使用者「減少動態」偏好設定 */
        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
            .hero-grid,
            .data-rain,
            .orb { display: none !important; }
            #canvas-bg { display: none !important; }
            body::after { display: none !important; }
        }

        /* GPU 加速提示 */
        #canvas-bg {
            will-change: contents;
        }
        .orb {
            will-change: transform;
        }
        .gpu-card,
        .feature-card,
        .pricing-card,
        .faq-item {
            will-change: transform, box-shadow;
        }
        .data-rain {
            contain: strict;
        }