/* CSS Reset & Variables */
        :root {
            --bg-base: #06040d;
            --bg-surface: rgba(15, 11, 28, 0.85);
            --bg-surface-hover: rgba(28, 20, 48, 0.95);
            --primary: #ec4899; /* 高饱和粉 */
            --secondary: #a855f7; /* 高饱和紫 */
            --accent: #06b6d4; /* 赛博蓝 */
            --text-main: #f3f4f6;
            --text-muted: #9ca3af;
            --border-glow: rgba(236, 72, 153, 0.25);
            --border-glow-hover: rgba(168, 85, 247, 0.6);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --container-max: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            background-color: var(--bg-base);
            color: var(--text-main);
            font-family: var(--font-sans);
            overflow-x: hidden;
            line-height: 1.6;
            background-image: 
                radial-gradient(circle at 10% 20%, rgba(236, 72, 153, 0.1) 0%, transparent 40%),
                radial-gradient(circle at 90% 80%, rgba(168, 85, 247, 0.12) 0%, transparent 50%);
            background-attachment: fixed;
        }

        /* 统一容器 */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
            width: 100%;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        ul {
            list-style: none;
        }

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

        /* Typography */
        h1, h2, h3, h4 {
            font-weight: 800;
            letter-spacing: -0.025em;
            color: #fff;
            text-shadow: 0 2px 10px rgba(0,0,0,0.5);
        }

        .section-title {
            text-align: center;
            font-size: 2.25rem;
            margin-bottom: 3rem;
            background: linear-gradient(135deg, #fff 30%, var(--primary) 70%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            position: relative;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            margin: 0.75rem auto 0 auto;
            border-radius: 2px;
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            margin-top: -2.5rem;
            margin-bottom: 3.5rem;
            font-size: 1rem;
        }

        /* Grid utilities */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 1.5rem;
        }

        /* Header Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(6, 4, 13, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(236, 72, 153, 0.15);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .ai-page-logo {
            height: 40px;
            width: auto;
        }

        .brand-name {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-menu {
            display: flex;
            gap: 1.5rem;
            align-items: center;
        }

        .nav-link {
            font-size: 0.9rem;
            color: var(--text-main);
            font-weight: 500;
            position: relative;
            padding: 0.25rem 0;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: width 0.3s ease;
        }

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

        .nav-btn {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: #fff;
            padding: 0.5rem 1.25rem;
            border-radius: 9999px;
            font-size: 0.875rem;
            font-weight: 600;
            box-shadow: 0 4px 15px rgba(236, 72, 153, 0.4);
            border: none;
            cursor: pointer;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(168, 85, 247, 0.6);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            background: none;
            border: none;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 2px;
            background-color: #fff;
            transition: all 0.3s ease;
        }

        /* Hero Section (No Image, Core USP emphasis) */
        .hero {
            padding-top: 140px;
            padding-bottom: 80px;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        /* Ambient glows for hero */
        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(236, 72, 153, 0.2) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            padding: 0.5rem 1.25rem;
            border-radius: 9999px;
            background: rgba(236, 72, 153, 0.1);
            border: 1px solid rgba(236, 72, 153, 0.3);
            color: var(--primary);
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            box-shadow: 0 0 15px rgba(236, 72, 153, 0.1) inset;
        }

        .hero-title {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            background: linear-gradient(135deg, #fff 40%, var(--primary) 70%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 2.5rem;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            gap: 1.25rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 3.5rem;
        }

        .btn-main {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: #fff;
            font-weight: 700;
            padding: 1rem 2.5rem;
            border-radius: 8px;
            font-size: 1.1rem;
            box-shadow: 0 4px 20px rgba(236, 72, 153, 0.4);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-main:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(236, 72, 153, 0.6);
        }

        .btn-sub {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #fff;
            font-weight: 600;
            padding: 1rem 2.5rem;
            border-radius: 8px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-sub:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent);
            color: var(--accent);
        }

        .hero-features {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2.5rem;
        }

        .hero-feat-item {
            text-align: center;
        }

        .hero-feat-val {
            font-size: 1.75rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.25rem;
        }

        .hero-feat-lbl {
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        /* Generic Section Pad */
        section {
            padding: 80px 0;
            position: relative;
        }

        /* Glow Card Component */
        .glow-card {
            background: var(--bg-surface);
            border: 1px solid rgba(236, 72, 153, 0.15);
            border-radius: 12px;
            padding: 2rem;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .glow-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(236, 72, 153, 0.05) 0%, rgba(168, 85, 247, 0.05) 100%);
            opacity: 0;
            transition: opacity 0.3s ease;
            z-index: 0;
        }

        .glow-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 10px 30px rgba(236, 72, 153, 0.15);
        }

        .glow-card:hover::before {
            opacity: 1;
        }

        .card-inner {
            position: relative;
            z-index: 1;
        }

        /* About Us & Platform Intro */
        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 3rem;
            align-items: center;
        }

        .about-content h3 {
            font-size: 1.75rem;
            margin-bottom: 1rem;
            color: var(--primary);
        }

        .about-text {
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
            line-height: 1.8;
        }

        .platform-points {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .point-item {
            display: flex;
            gap: 0.75rem;
            align-items: flex-start;
        }

        .point-icon {
            color: var(--accent);
            font-size: 1.25rem;
            line-height: 1;
        }

        .point-title {
            font-weight: 700;
            margin-bottom: 0.25rem;
        }

        .point-desc {
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        /* Model Aggregator (全平台 AIGC 服务) */
        .model-marquee {
            overflow: hidden;
            position: relative;
            width: 100%;
            padding: 2rem 0;
            background: rgba(15, 11, 28, 0.5);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .model-track {
            display: flex;
            width: max-content;
            gap: 2rem;
            animation: scroll-left 40s linear infinite;
        }

        .model-badge {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: #fff;
            padding: 0.5rem 1.5rem;
            border-radius: 9999px;
            font-weight: 600;
            white-space: nowrap;
        }

        .model-badge:hover {
            border-color: var(--accent);
            background: rgba(6, 182, 212, 0.1);
        }

        @keyframes scroll-left {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        /* Service Capability (一站式 AIGC 制作) */
        .serv-card-icon {
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            color: var(--accent);
        }

        .serv-card-title {
            font-size: 1.25rem;
            margin-bottom: 0.75rem;
        }

        .serv-card-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }

        .serv-features-list {
            font-size: 0.85rem;
            color: var(--text-main);
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .serv-features-list li::before {
            content: '✦';
            color: var(--primary);
            margin-right: 0.5rem;
        }

        /* Solutions (行业解决方案) */
        .solutions-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }

        .solution-card {
            display: flex;
            gap: 1.5rem;
            background: var(--bg-surface);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 12px;
            padding: 1.5rem;
            transition: all 0.3s ease;
        }

        .solution-card:hover {
            border-color: var(--secondary);
            transform: translateY(-3px);
        }

        .sol-icon {
            font-size: 2rem;
            color: var(--primary);
        }

        .sol-title {
            margin-bottom: 0.5rem;
            font-size: 1.2rem;
        }

        .sol-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* Service Network & Standard (全国服务网络 & 技术标准) */
        .network-section {
            background: linear-gradient(180deg, rgba(6,4,13,0) 0%, rgba(15,11,28,0.6) 50%, rgba(6,4,13,0) 100%);
        }

        .net-standard-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
        }

        .info-block h3 {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            color: var(--accent);
        }

        .standard-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .standard-item {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: 8px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .standard-name {
            font-weight: 700;
        }

        .standard-val {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
        }

        /* Step Process (标准化 AIGC 流程) */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
        }

        .process-item {
            background: var(--bg-surface);
            border: 1px solid rgba(255,255,255,0.05);
            border-radius: 12px;
            padding: 2rem 1.5rem;
            text-align: center;
            position: relative;
        }

        .process-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem auto;
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 0 15px rgba(236, 72, 153, 0.4);
        }

        .process-title {
            margin-bottom: 0.5rem;
            font-size: 1.1rem;
        }

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

        /* Case Center (客户案例中心 - 含宣传图/素材图) */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }

        .case-card {
            background: var(--bg-surface);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: all 0.3s ease;
        }

        .case-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }

        .case-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: rgba(0,0,0,0.5);
        }

        .case-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .case-card:hover .case-img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 1.5rem;
        }

        .case-tag {
            display: inline-block;
            font-size: 0.75rem;
            background: rgba(6, 182, 212, 0.1);
            color: var(--accent);
            padding: 0.25rem 0.75rem;
            border-radius: 4px;
            margin-bottom: 0.75rem;
            font-weight: 600;
        }

        .case-title {
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }

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

        /* Comparison Board (对比评测) */
        .compare-section {
            background: rgba(15, 11, 28, 0.3);
        }

        .compare-intro-wrap {
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: linear-gradient(90deg, rgba(236,72,153,0.1), rgba(168,85,247,0.1));
            border: 1px solid rgba(236,72,153,0.2);
            border-radius: 12px;
            padding: 2rem;
            margin-bottom: 3rem;
        }

        .score-box {
            text-align: right;
        }

        .score-num {
            font-size: 3rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .score-stars {
            color: #fbbf24;
            font-size: 1.25rem;
            margin-top: 0.25rem;
        }

        .table-wrap {
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

        .compare-table th, .compare-table td {
            padding: 1.25rem 1.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .compare-table th {
            background: rgba(255, 255, 255, 0.02);
            color: #fff;
            font-weight: 700;
        }

        .compare-table tbody tr:hover {
            background: rgba(255, 255, 255, 0.01);
        }

        .jxdl-col {
            background: rgba(236, 72, 153, 0.03);
            font-weight: 600;
            color: #fff;
        }

        .table-check {
            color: #10b981;
            font-weight: bold;
        }

        .table-cross {
            color: #ef4444;
        }

        /* Token Price Reference (Token比价参考) */
        .token-price-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }

        .price-card {
            background: var(--bg-surface);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 12px;
            padding: 1.5rem;
            text-align: center;
        }

        .price-card.featured {
            border-color: var(--primary);
            box-shadow: 0 0 15px rgba(236, 72, 153, 0.15);
        }

        .price-card-title {
            font-size: 1.25rem;
            margin-bottom: 0.5rem;
        }

        .price-card-sub {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }

        .price-num-display {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 1.5rem;
        }

        .price-num-display span {
            font-size: 0.875rem;
            color: var(--text-muted);
            font-weight: normal;
        }

        /* Training Sections (职业技术培训 & 人工智能培训) */
        .training-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .cert-card-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .cert-card {
            background: var(--bg-surface);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            padding: 1rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: all 0.3s ease;
        }

        .cert-card:hover {
            border-color: var(--secondary);
            transform: translateX(5px);
        }

        .cert-title {
            font-weight: 700;
        }

        .cert-authority {
            font-size: 0.75rem;
            background: rgba(168, 85, 247, 0.1);
            color: var(--secondary);
            padding: 0.25rem 0.5rem;
            border-radius: 4px;
        }

        /* FAQ (常见用户问题 FAQ & 自助排查 & 术语百科) */
        .faq-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 3rem;
        }

        .accordion {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .accordion-item {
            background: var(--bg-surface);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .accordion-header {
            padding: 1.25rem 1.5rem;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            background: rgba(255, 255, 255, 0.01);
        }

        .accordion-header::after {
            content: '+';
            font-size: 1.25rem;
            color: var(--text-muted);
            transition: transform 0.3s ease;
        }

        .accordion-item.active {
            border-color: var(--primary);
        }

        .accordion-item.active .accordion-header::after {
            content: '−';
            color: var(--primary);
        }

        .accordion-content {
            padding: 0 1.5rem;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .accordion-item.active .accordion-content {
            padding: 1.25rem 1.5rem;
            max-height: 200px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        /* Troubleshooting & Glossary sidecards */
        .glossary-wrap {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .sidebar-card {
            background: var(--bg-surface);
            border: 1px solid rgba(255,255,255,0.05);
            border-radius: 8px;
            padding: 1.5rem;
        }

        .sidebar-card h4 {
            margin-bottom: 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding-bottom: 0.5rem;
            color: var(--accent);
        }

        .glossary-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            font-size: 0.85rem;
        }

        .glossary-item strong {
            color: #fff;
        }

        /* Testimonials (用户评论) */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 1.5rem;
        }

        .testimonial-card {
            background: var(--bg-surface);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 12px;
            padding: 2rem;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .testi-text {
            font-style: italic;
            color: var(--text-main);
            margin-bottom: 1.5rem;
            font-size: 0.95rem;
        }

        .testi-user {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .testi-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
        }

        .testi-meta h5 {
            font-size: 0.95rem;
            margin-bottom: 0.15rem;
        }

        .testi-meta span {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* Knowledge Base (行业资讯 / 知识库 / 最新文章) */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }

        .news-card {
            background: var(--bg-surface);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            padding: 1.5rem;
            transition: all 0.3s ease;
        }

        .news-card:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--accent);
            margin-bottom: 0.5rem;
        }

        .news-title {
            font-size: 1.1rem;
            margin-bottom: 1rem;
            line-height: 1.4;
        }

        .news-link {
            font-size: 0.875rem;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
        }

        .news-link:hover {
            color: var(--secondary);
        }

        /* Lead Form & Contact (智能需求匹配 & 联系我们 & 加盟代理) */
        .contact-section {
            background: linear-gradient(180deg, rgba(6,4,13,0) 0%, rgba(15,11,28,0.5) 100%);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 3rem;
        }

        .form-wrap {
            background: var(--bg-surface);
            border: 1px solid rgba(236, 72, 153, 0.2);
            border-radius: 12px;
            padding: 2.5rem;
        }

        .form-title {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .form-group {
            margin-bottom: 1.25rem;
        }

        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-size: 0.875rem;
            font-weight: 600;
        }

        .form-control {
            width: 100%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 6px;
            padding: 0.75rem 1rem;
            color: #fff;
            font-size: 0.95rem;
            transition: all 0.3s ease;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 10px rgba(236, 72, 153, 0.2);
        }

        select.form-control option {
            background: var(--bg-base);
            color: #fff;
        }

        .form-submit-btn {
            width: 100%;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: #fff;
            border: none;
            border-radius: 6px;
            padding: 1rem;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(236, 72, 153, 0.4);
            transition: all 0.3s ease;
        }

        .form-submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(236, 72, 153, 0.6);
        }

        .contact-info-wrap {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }

        .info-card {
            background: var(--bg-surface);
            border: 1px solid rgba(255,255,255,0.05);
            border-radius: 12px;
            padding: 2rem;
        }

        .info-card h4 {
            font-size: 1.25rem;
            margin-bottom: 1rem;
            color: var(--primary);
        }

        .info-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            font-size: 0.95rem;
        }

        .kefu-qr-box {
            text-align: center;
            margin-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.5rem;
        }

        .kefu-qr-box img {
            width: 130px;
            height: 130px;
            margin: 0.5rem auto 0 auto;
            border-radius: 8px;
            border: 2px solid var(--primary);
        }

        /* Footer (页脚 & 友情链接) */
        .footer {
            background: #05030a;
            border-top: 1px solid rgba(236, 72, 153, 0.15);
            padding: 40px 0 20px 0;
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 3rem;
            margin-bottom: 2.5rem;
        }

        .footer-logo-wrap {
            margin-bottom: 1rem;
        }

        .footer-brand {
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
        }

        .footer-links {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.5rem;
        }

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

        .friend-links-box h5 {
            color: #fff;
            margin-bottom: 0.75rem;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem 1.25rem;
        }

        .friend-links a {
            color: var(--text-muted);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.75rem;
        }

        /* Floating Widgets */
        .float-widget {
            position: fixed;
            right: 20px;
            bottom: 80px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .float-btn {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            box-shadow: 0 4px 15px rgba(236,72,153,0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: none;
            color: #fff;
            position: relative;
        }

        .float-btn:hover {
            transform: scale(1.05);
        }

        .qr-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: var(--bg-surface);
            border: 1px solid var(--primary);
            border-radius: 8px;
            padding: 0.75rem;
            width: 130px;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0,0,0,0.5);
        }

        .qr-popover img {
            width: 100%;
            height: auto;
            border-radius: 4px;
        }

        .qr-popover p {
            font-size: 0.75rem;
            margin-top: 0.25rem;
            color: #fff;
        }

        .float-btn:hover .qr-popover {
            opacity: 1;
            visibility: visible;
        }

        /* Responsive Breakpoints */
        @media (max-width: 992px) {
            .menu-toggle {
                display: flex;
            }

            .nav-menu {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--bg-base);
                flex-direction: column;
                padding: 2rem;
                gap: 1.5rem;
                border-bottom: 1px solid rgba(236, 72, 153, 0.2);
                transform: translateY(-150%);
                transition: transform 0.3s ease;
            }

            .nav-menu.open {
                transform: translateY(0);
            }

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

            .about-grid, .net-standard-grid, .training-grid, .faq-grid, .contact-grid {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }

            .process-steps {
                grid-template-columns: 1fr 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        @media (max-width: 576px) {
            .hero-title {
                font-size: 2rem;
            }

            .hero-btns .btn-main, .hero-btns .btn-sub {
                width: 100%;
            }

            .process-steps {
                grid-template-columns: 1fr;
            }
        }