:root {
            --bg-deep: #060b15;
            --bg-dark: #080c14;
            --panel-bg: #0f172a;
            --panel-hover: #1a2540;
            --accent-emerald: #10b981;
            --accent-cyan: #06b6d4;
            --accent-purple: #8b5cf6;
            --accent-amber: #f59e0b;
            --accent-rose: #f43f5e;
            --accent-glow-emerald: rgba(16, 185, 129, 0.18);
            --accent-glow-cyan: rgba(6, 182, 212, 0.14);
            --accent-glow-purple: rgba(139, 92, 246, 0.16);
            --border-color: rgba(255, 255, 255, 0.07);
            --border-highlight: rgba(16, 185, 129, 0.45);
            --border-soft: rgba(255, 255, 255, 0.04);
            --text-primary: #f8fafc;
            --text-secondary: #b0bec5;
            --text-muted: #64748b;
            --text-soft: #8899aa;
            --card-shadow: 0 8px 40px rgba(0, 0, 0, 0.45);
            --card-shadow-hover: 0 18px 55px rgba(0, 0, 0, 0.6);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-mono: 'SF Mono', 'Cascadia Code', 'JetBrains Mono', 'Fira Code', monospace;
            --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            background-color: var(--bg-deep);
            background-image:
                radial-gradient(ellipse at 15% 10%, rgba(16, 185, 129, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 30%, rgba(6, 182, 212, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 40% 70%, rgba(139, 92, 246, 0.025) 0%, transparent 55%);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            font-family: var(--font-sans);
            letter-spacing: 0.01em;
        }

        /* ===== 通知栏 ===== */
        .notice-bar {
            background: linear-gradient(105deg, #065f46 0%, #0e7490 50%, #5b21b6 100%);
            background-size: 200% 100%;
            animation: noticeShimmer 8s ease-in-out infinite;
            color: #ecfdf5;
            font-size: 0.84rem;
            font-weight: 600;
            text-align: center;
            padding: 0.55rem 1rem;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 0.6rem;
            letter-spacing: 0.3px;
            position: relative;
            z-index: 1001;
        }
        @keyframes noticeShimmer {
            0%,
            100% {
                background-position: 0% 50%;
            }
            50% {
                background-position: 100% 50%;
            }
        }
        .notice-tag {
            background: rgba(255, 255, 255, 0.22);
            padding: 0.18rem 0.6rem;
            border-radius: 5px;
            font-size: 0.73rem;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            backdrop-filter: blur(4px);
        }
        .notice-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #34d399;
            box-shadow: 0 0 12px #34d399;
            animation: pulseDot 2s ease-in-out infinite;
        }
        @keyframes pulseDot {
            0%,
            100% {
                box-shadow: 0 0 8px #34d399;
            }
            50% {
                box-shadow: 0 0 22px #34d399, 0 0 40px rgba(52, 211, 153, 0.5);
            }
        }

        /* ===== 头部导航 ===== */
        header {
            position: sticky;
            top: 0;
            background: rgba(6, 11, 21, 0.88);
            backdrop-filter: blur(22px) saturate(140%);
            -webkit-backdrop-filter: blur(22px) saturate(140%);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: all var(--transition-smooth);
        }
        header.scrolled {
            background: rgba(6, 11, 21, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .nav-inner {
            max-width: 1320px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.9rem 2rem;
            gap: 1.5rem;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            text-decoration: none;
            flex-shrink: 0;
            transition: transform var(--transition-bounce);
        }
        .brand-logo:hover {
            transform: scale(1.03);
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-emerald) 0%, var(--accent-cyan) 60%, var(--accent-purple) 100%);
            border-radius: 10px;
            display: grid;
            place-items: center;
            box-shadow: 0 0 20px var(--accent-glow-emerald);
            position: relative;
            overflow: hidden;
        }
        .logo-icon::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.2) 50%, transparent 60%);
            animation: logoGlint 3s ease-in-out infinite;
        }
        @keyframes logoGlint {
            0%,
            100% {
                opacity: 0;
            }
            50% {
                opacity: 1;
            }
        }
        .logo-icon svg {
            width: 23px;
            height: 23px;
            fill: #060b15;
            position: relative;
            z-index: 1;
        }
        .brand-name {
            font-size: 1.35rem;
            font-weight: 850;
            letter-spacing: -0.6px;
            color: var(--text-primary);
        }
        .brand-version {
            font-size: 0.68rem;
            background: rgba(139, 92, 246, 0.18);
            color: #a78bfa;
            padding: 0.15rem 0.5rem;
            border-radius: 5px;
            border: 1px solid rgba(139, 92, 246, 0.35);
            font-weight: 700;
            letter-spacing: 0.4px;
        }
        .nav-links {
            display: flex;
            gap: 2.2rem;
            list-style: none;
            align-items: center;
        }
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.93rem;
            font-weight: 530;
            transition: all var(--transition-smooth);
            position: relative;
            padding: 0.25rem 0;
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-emerald), var(--accent-cyan));
            border-radius: 2px;
            transition: width var(--transition-smooth);
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: #e2fdf2;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-shrink: 0;
        }
        .btn-nav {
            background: var(--panel-bg);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            padding: 0.55rem 1.3rem;
            border-radius: var(--radius-sm);
            font-size: 0.86rem;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition-smooth);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .btn-nav:hover {
            border-color: var(--accent-purple);
            color: #c4b5fd;
            background: rgba(139, 92, 246, 0.08);
            box-shadow: 0 0 24px rgba(139, 92, 246, 0.2);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        /* ===== Hero 区域 ===== */
        .hero-section {
            padding: 5.5rem 0 4rem;
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 4.5rem;
            align-items: center;
            position: relative;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -200px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(16, 185, 129, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            z-index: -1;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.55rem;
            background: rgba(16, 185, 129, 0.09);
            border: 1px solid rgba(16, 185, 129, 0.22);
            color: var(--accent-emerald);
            padding: 0.4rem 1rem;
            border-radius: 22px;
            font-size: 0.84rem;
            font-weight: 650;
            margin-bottom: 1.6rem;
            letter-spacing: 0.3px;
            animation: fadeInUp 0.7s ease-out;
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(18px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .hero-badge svg {
            animation: spinSlow 10s linear infinite;
        }
        @keyframes spinSlow {
            from {
                transform: rotate(0deg);
            }
            to {
                transform: rotate(360deg);
            }
        }
        .hero-title {
            font-size: 3.6rem;
            font-weight: 900;
            line-height: 1.12;
            letter-spacing: -1.8px;
            margin-bottom: 1.4rem;
            animation: fadeInUp 0.7s ease-out 0.1s both;
        }
        .hero-title span {
            background: linear-gradient(135deg, var(--accent-emerald) 0%, var(--accent-cyan) 45%, var(--accent-purple) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 1.14rem;
            color: var(--text-secondary);
            margin-bottom: 2.6rem;
            max-width: 560px;
            line-height: 1.7;
            animation: fadeInUp 0.7s ease-out 0.2s both;
        }
        .hero-cta-group {
            display: flex;
            gap: 1.1rem;
            align-items: center;
            margin-bottom: 3.2rem;
            flex-wrap: wrap;
            animation: fadeInUp 0.7s ease-out 0.3s both;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-emerald) 0%, var(--accent-cyan) 100%);
            color: #060b15;
            padding: 0.95rem 2.2rem;
            border-radius: var(--radius-sm);
            font-weight: 750;
            font-size: 1rem;
            text-decoration: none;
            box-shadow: 0 6px 28px var(--accent-glow-emerald);
            transition: all var(--transition-bounce);
            letter-spacing: 0.3px;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(16, 185, 129, 0.4);
        }
        .btn-secondary {
            background: var(--panel-bg);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            padding: 0.95rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition-smooth);
            letter-spacing: 0.3px;
        }
        .btn-secondary:hover {
            background: var(--panel-hover);
            border-color: rgba(139, 92, 246, 0.5);
            box-shadow: 0 0 28px rgba(139, 92, 246, 0.18);
        }
        .trust-metrics {
            display: flex;
            gap: 2.2rem;
            border-top: 1px solid var(--border-color);
            padding-top: 1.6rem;
            flex-wrap: wrap;
            animation: fadeInUp 0.7s ease-out 0.4s both;
        }
        .metric-item {
            display: flex;
            flex-direction: column;
            gap: 0.2rem;
        }
        .metric-item strong {
            display: block;
            font-size: 1.3rem;
            color: var(--text-primary);
            font-weight: 800;
            letter-spacing: -0.4px;
        }
        .metric-item span {
            font-size: 0.83rem;
            color: var(--text-muted);
            letter-spacing: 0.2px;
        }

        /* ===== Mockup 终端 ===== */
        .mockup-container {
            background: var(--panel-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            position: relative;
            animation: fadeInUp 0.7s ease-out 0.25s both;
        }
        .mockup-container::before {
            content: '';
            position: absolute;
            inset: -1px;
            border-radius: var(--radius-lg);
            padding: 1px;
            background: linear-gradient(135deg, rgba(16, 185, 129, 0.5), rgba(139, 92, 246, 0.4), rgba(6, 182, 212, 0.5));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
            opacity: 0.5;
        }
        .mockup-header {
            background: rgba(255, 255, 255, 0.025);
            padding: 0.85rem 1.3rem;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .window-dots {
            display: flex;
            gap: 7px;
        }
        .dot {
            width: 11px;
            height: 11px;
            border-radius: 50%;
            background: var(--border-color);
        }
        .dot:nth-child(1) {
            background: #f43f5e;
        }
        .dot:nth-child(2) {
            background: #f59e0b;
        }
        .dot:nth-child(3) {
            background: #10b981;
        }
        .status-pill {
            font-size: 0.73rem;
            color: var(--accent-emerald);
            display: flex;
            align-items: center;
            gap: 0.45rem;
            font-family: var(--font-mono);
            letter-spacing: 0.3px;
        }
        .status-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent-emerald);
            box-shadow: 0 0 10px var(--accent-emerald);
            animation: pulseDot 2s ease-in-out infinite;
        }
        .mockup-body {
            padding: 1.6rem;
            display: flex;
            flex-direction: column;
            gap: 1rem;
            font-family: var(--font-mono);
            font-size: 0.82rem;
            max-height: 380px;
            overflow-y: auto;
        }
        .mockup-body::-webkit-scrollbar {
            width: 4px;
        }
        .mockup-body::-webkit-scrollbar-track {
            background: transparent;
        }
        .mockup-body::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
        }
        .log-line {
            display: flex;
            gap: 0.7rem;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }
        .log-time {
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .log-key {
            color: var(--accent-cyan);
        }
        .log-ai {
            color: #a78bfa;
            font-weight: 600;
        }
        .log-warn {
            color: var(--accent-amber);
        }
        .encrypted-box {
            background: rgba(6, 11, 21, 0.75);
            border: 1px dashed var(--border-highlight);
            padding: 1rem;
            border-radius: var(--radius-sm);
            color: var(--accent-emerald);
            word-break: break-all;
            font-size: 0.78rem;
            line-height: 1.5;
        }
        .chat-bubble-mock {
            background: rgba(16, 185, 129, 0.08);
            border: 1px solid rgba(16, 185, 129, 0.2);
            border-radius: 12px;
            padding: 0.7rem 1rem;
            color: #d1fae5;
            font-size: 0.8rem;
            align-self: flex-start;
            max-width: 85%;
        }
        .chat-bubble-mock.ai-reply {
            align-self: flex-end;
            background: rgba(139, 92, 246, 0.08);
            border-color: rgba(139, 92, 246, 0.2);
            color: #ddd6fe;
        }
        .ai-suggestion-tag {
            display: inline-block;
            background: rgba(139, 92, 246, 0.2);
            color: #c4b5fd;
            padding: 0.15rem 0.55rem;
            border-radius: 12px;
            font-size: 0.7rem;
            margin: 0.15rem;
            cursor: default;
            border: 1px solid rgba(139, 92, 246, 0.3);
        }

        /* ===== 区块标题 ===== */
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 4rem;
        }
        .section-tag {
            color: var(--accent-emerald);
            font-size: 0.84rem;
            font-weight: 750;
            text-transform: uppercase;
            letter-spacing: 1.2px;
            margin-bottom: 0.9rem;
            display: block;
        }
        .section-title {
            font-size: 2.6rem;
            font-weight: 850;
            letter-spacing: -1.1px;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .section-title .highlight {
            background: linear-gradient(135deg, var(--accent-emerald), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-desc {
            color: var(--text-secondary);
            font-size: 1.04rem;
            line-height: 1.65;
        }

        /* ===== 核心功能卡片 ===== */
        .pillars-section {
            padding: 6rem 0;
            border-top: 1px solid var(--border-color);
            position: relative;
        }
        .pillars-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.4rem;
        }
        .pillar-card {
            background: var(--panel-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 2.2rem 1.6rem 1.8rem;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
            cursor: default;
        }
        .pillar-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-emerald), transparent);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .pillar-card:hover::before {
            opacity: 1;
        }
        .pillar-card:hover {
            border-color: var(--border-highlight);
            transform: translateY(-5px);
            box-shadow: var(--card-shadow-hover);
            background: var(--panel-hover);
        }
        .pillar-icon {
            width: 48px;
            height: 48px;
            background: rgba(16, 185, 129, 0.1);
            color: var(--accent-emerald);
            border-radius: 12px;
            display: grid;
            place-items: center;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            transition: all var(--transition-smooth);
        }
        .pillar-card:hover .pillar-icon {
            background: rgba(16, 185, 129, 0.2);
            box-shadow: 0 0 22px var(--accent-glow-emerald);
            transform: scale(1.05);
        }
        .pillar-card:nth-child(2) .pillar-icon {
            background: rgba(139, 92, 246, 0.1);
            color: #a78bfa;
        }
        .pillar-card:nth-child(2):hover .pillar-icon {
            background: rgba(139, 92, 246, 0.2);
            box-shadow: 0 0 22px var(--accent-glow-purple);
        }
        .pillar-card:nth-child(3) .pillar-icon {
            background: rgba(6, 182, 212, 0.1);
            color: var(--accent-cyan);
        }
        .pillar-card:nth-child(3):hover .pillar-icon {
            background: rgba(6, 182, 212, 0.2);
            box-shadow: 0 0 22px var(--accent-glow-cyan);
        }
        .pillar-card:nth-child(4) .pillar-icon {
            background: rgba(245, 158, 11, 0.1);
            color: var(--accent-amber);
        }
        .pillar-card:nth-child(4):hover .pillar-icon {
            background: rgba(245, 158, 11, 0.2);
            box-shadow: 0 0 22px rgba(245, 158, 11, 0.3);
        }
        .pillar-title {
            font-size: 1.14rem;
            font-weight: 750;
            margin-bottom: 0.75rem;
            letter-spacing: -0.3px;
        }
        .pillar-desc {
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.6;
        }

        /* ===== 创意版块：AI 隐私引擎透视 ===== */
        .ai-engine-section {
            padding: 5rem 0;
            background: rgba(15, 23, 42, 0.35);
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
            position: relative;
            overflow: hidden;
        }
        .ai-engine-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -30%;
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.04) 0%, transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }
        .ai-engine-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3.5rem;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .ai-engine-visual {
            background: var(--panel-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2rem;
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
            box-shadow: var(--card-shadow);
        }
        .ai-flow-step {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            padding: 0.9rem 1.1rem;
            background: rgba(255, 255, 255, 0.015);
            border-radius: var(--radius-sm);
            border-left: 3px solid transparent;
            transition: all var(--transition-smooth);
        }
        .ai-flow-step:nth-child(1) {
            border-left-color: var(--accent-emerald);
        }
        .ai-flow-step:nth-child(2) {
            border-left-color: var(--accent-cyan);
        }
        .ai-flow-step:nth-child(3) {
            border-left-color: var(--accent-purple);
        }
        .ai-flow-step:nth-child(4) {
            border-left-color: var(--accent-amber);
        }
        .ai-flow-step:hover {
            background: rgba(255, 255, 255, 0.04);
        }
        .ai-step-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: grid;
            place-items: center;
            font-weight: 800;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .ai-flow-step:nth-child(1) .ai-step-icon {
            background: rgba(16, 185, 129, 0.15);
            color: var(--accent-emerald);
        }
        .ai-flow-step:nth-child(2) .ai-step-icon {
            background: rgba(6, 182, 212, 0.15);
            color: var(--accent-cyan);
        }
        .ai-flow-step:nth-child(3) .ai-step-icon {
            background: rgba(139, 92, 246, 0.15);
            color: #a78bfa;
        }
        .ai-flow-step:nth-child(4) .ai-step-icon {
            background: rgba(245, 158, 11, 0.15);
            color: var(--accent-amber);
        }
        .ai-step-text strong {
            display: block;
            font-size: 0.95rem;
            color: var(--text-primary);
            margin-bottom: 0.2rem;
        }
        .ai-step-text span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .ai-engine-info h3 {
            font-size: 2rem;
            font-weight: 850;
            letter-spacing: -0.8px;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .ai-engine-info h3 .highlight {
            background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .ai-engine-info p {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 1.5rem;
            line-height: 1.7;
        }
        .ai-stat-row {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
        }
        .ai-stat {
            text-align: center;
            padding: 1rem 1.5rem;
            background: rgba(255, 255, 255, 0.02);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-soft);
        }
        .ai-stat .stat-num {
            font-size: 2rem;
            font-weight: 900;
            letter-spacing: -1px;
            background: linear-gradient(135deg, var(--accent-emerald), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .ai-stat .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        /* ===== 创意版块：多语言对话场景 ===== */
        .translate-showcase {
            padding: 5.5rem 0;
            position: relative;
        }
        .translate-demo-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .translate-card {
            background: var(--panel-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            transition: all var(--transition-smooth);
            position: relative;
        }
        .translate-card:hover {
            border-color: var(--border-highlight);
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
        }
        .translate-card .lang-pair {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 1rem;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--accent-cyan);
            letter-spacing: 0.4px;
        }
        .translate-card .lang-pair svg {
            width: 16px;
            height: 16px;
            flex-shrink: 0;
        }
        .translate-card .original-msg {
            background: rgba(255, 255, 255, 0.03);
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 0.7rem;
            border-left: 3px solid var(--border-color);
        }
        .translate-card .translated-msg {
            background: rgba(16, 185, 129, 0.06);
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            color: #d1fae5;
            border-left: 3px solid var(--accent-emerald);
            font-weight: 500;
        }
        .translate-card .ai-note {
            font-size: 0.72rem;
            color: var(--text-muted);
            margin-top: 0.6rem;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }

        /* ===== 对比表格 ===== */
        .matrix-section {
            padding: 6rem 0;
            background: rgba(15, 23, 42, 0.35);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .matrix-table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
        }
        .matrix-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background: var(--panel-bg);
        }
        .matrix-table th,
        .matrix-table td {
            padding: 1.25rem 1.5rem;
            border-bottom: 1px solid var(--border-color);
        }
        .matrix-table th {
            color: var(--text-muted);
            font-size: 0.83rem;
            text-transform: uppercase;
            font-weight: 750;
            letter-spacing: 0.8px;
            background: rgba(0, 0, 0, 0.2);
        }
        .matrix-table td {
            font-size: 0.93rem;
            vertical-align: middle;
        }
        .matrix-table tr.highlight-row {
            background: rgba(16, 185, 129, 0.04);
        }
        .matrix-table tr.highlight-row td {
            color: var(--text-primary);
            font-weight: 600;
        }
        .matrix-table tbody tr:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .check-icon {
            color: var(--accent-emerald);
            font-weight: 700;
            font-size: 1.1rem;
        }
        .cross-icon {
            color: var(--text-muted);
        }
        .badge-new {
            display: inline-block;
            background: rgba(139, 92, 246, 0.2);
            color: #c4b5fd;
            font-size: 0.7rem;
            padding: 0.15rem 0.5rem;
            border-radius: 10px;
            margin-left: 0.4rem;
            font-weight: 600;
            letter-spacing: 0.4px;
        }

        /* ===== CTA 横幅 ===== */
        .cta-banner {
            padding: 6rem 0;
            text-align: center;
        }
        .cta-card {
            background: linear-gradient(145deg, rgba(15, 23, 42, 0.9) 0%, rgba(139, 92, 246, 0.08) 50%, rgba(6, 182, 212, 0.06) 100%);
            border: 1px solid var(--border-highlight);
            border-radius: var(--radius-xl);
            padding: 4.5rem 2.5rem;
            max-width: 980px;
            margin: 0 auto;
            box-shadow: 0 0 60px var(--accent-glow-emerald);
            position: relative;
            overflow: hidden;
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(16, 185, 129, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-card h2 {
            font-size: 2.6rem;
            font-weight: 850;
            margin-bottom: 1rem;
            letter-spacing: -1px;
            position: relative;
            z-index: 1;
        }
        .cta-card p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin-bottom: 2.5rem;
            position: relative;
            z-index: 1;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-card .btn-primary {
            position: relative;
            z-index: 1;
            font-size: 1.05rem;
            padding: 1rem 2.6rem;
        }

        /* ===== Footer ===== */
        footer {
            background: #03060d;
            border-top: 1px solid var(--border-color);
            padding: 4.5rem 0 2rem;
            color: var(--text-muted);
            font-size: 0.88rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 3.5rem;
            margin-bottom: 3.5rem;
        }
        .footer-brand p {
            margin-top: 1rem;
            max-width: 310px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .footer-col h4 {
            color: var(--text-primary);
            font-size: 0.93rem;
            margin-bottom: 1.3rem;
            font-weight: 700;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.85rem;
        }
        .footer-col a {
            color: var(--text-muted);
            text-decoration: none;
            transition: all var(--transition-smooth);
            font-size: 0.86rem;
        }
        .footer-col a:hover {
            color: var(--accent-emerald);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 2.2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.75rem;
            color: var(--accent-emerald);
            background: rgba(16, 185, 129, 0.08);
            padding: 0.3rem 0.7rem;
            border-radius: 14px;
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1100px) {
            .hero-section {
                grid-template-columns: 1fr;
                text-align: center;
                gap: 3rem;
                padding: 3.5rem 0 2rem;
            }
            .hero-subtitle {
                margin: 0 auto 2.5rem;
            }
            .hero-cta-group {
                justify-content: center;
            }
            .trust-metrics {
                justify-content: center;
            }
            .pillars-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .ai-engine-grid {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }
            .translate-demo-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2.5rem;
            }
            .hero-title {
                font-size: 2.8rem;
            }
        }
        @media (max-width: 700px) {
            .nav-links {
                gap: 1.2rem;
                font-size: 0.8rem;
            }
            .nav-inner {
                padding: 0.7rem 1rem;
                flex-wrap: wrap;
                gap: 0.8rem;
            }
            .hero-title {
                font-size: 2.2rem;
                letter-spacing: -0.8px;
            }
            .hero-section {
                padding: 2.5rem 0 1.5rem;
            }
            .pillars-grid {
                grid-template-columns: 1fr;
            }
            .translate-demo-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-title {
                font-size: 1.9rem;
            }
            .cta-card {
                padding: 2.5rem 1.5rem;
            }
            .cta-card h2 {
                font-size: 1.8rem;
            }
            .ai-stat-row {
                gap: 1rem;
            }
            .matrix-table th,
            .matrix-table td {
                padding: 0.8rem 0.7rem;
                font-size: 0.78rem;
            }
            .mockup-body {
                font-size: 0.7rem;
                padding: 1rem;
            }
            .brand-version {
                display: none;
            }
            .nav-actions .btn-nav {
                padding: 0.4rem 0.8rem;
                font-size: 0.78rem;
            }
        }
        @media (max-width: 420px) {
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-badge {
                font-size: 0.72rem;
                padding: 0.3rem 0.7rem;
            }
            .trust-metrics {
                gap: 1rem;
            }
            .metric-item strong {
                font-size: 1rem;
            }
            .pillar-card {
                padding: 1.4rem 1rem;
            }
        }