* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', sans-serif;
        }
        :root {
            --blue-deep: #0b2b5c;
            --blue-main: #1a4fa0;
            --blue-bright: #2563eb;
            --blue-light: #eef4ff;
            --blue-soft: #dbeafe;
            --accent-gold: #f5b042;
            --gray-50: #f8fafd;
            --gray-100: #eef2f8;
            --gray-200: #d9e1ec;
            --gray-600: #4a5b73;
            --gray-800: #1f2a3a;
            --white: #ffffff;
            --radius-md: 18px;
            --radius-lg: 28px;
            --shadow-sm: 0 10px 25px -8px rgba(0, 40, 100, 0.08);
            --shadow-md: 0 20px 35px -12px rgba(0, 40, 100, 0.15);
            --shadow-lg: 0 30px 50px -18px rgba(0, 40, 100, 0.2);
            --container-max: 1280px;
            --gap-standard: 28px;
        }
        body {
            background: #f2f7ff;
            background-image: radial-gradient(circle at 20% 0%, rgba(37, 99, 235, 0.06) 0%, transparent 40%),
                              linear-gradient(180deg, #f2f7ff 0%, #ffffff 100%);
            background-repeat: no-repeat;
            background-size: 100% 600px, 100% 100%;
            color: var(--gray-800);
            line-height: 1.5;
            min-height: 100vh;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* 导航 */
        .navbar {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(37, 99, 235, 0.12);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            flex-wrap: wrap;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .nav-brand img {
            max-height: 42px;
            width: auto;
            display: block;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0;
            flex-wrap: wrap;
            margin-left: 24px;
        }
        .nav-links a {
            text-decoration: none;
            color: var(--gray-800);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 14px;
            border-radius: 100px;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: var(--blue-light);
            color: var(--blue-main);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn-outline {
            border: 1.5px solid var(--blue-main);
            background: transparent;
            color: var(--blue-main);
            font-weight: 600;
            padding: 10px 20px;
            border-radius: 40px;
            font-size: 0.95rem;
            text-decoration: none;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: var(--blue-main);
            color: #fff;
            box-shadow: 0 8px 16px -6px rgba(26, 79, 160, 0.3);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--blue-main), var(--blue-bright));
            color: #fff;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 40px;
            font-size: 0.95rem;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
            border: none;
            white-space: nowrap;
            box-shadow: 0 8px 18px -6px rgba(26, 79, 160, 0.4);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 22px -8px rgba(26, 79, 160, 0.5);
        }
        .menu-toggle {
            display: none;
            background: transparent;
            border: 1.5px solid var(--blue-soft);
            border-radius: 12px;
            padding: 8px 12px;
            font-size: 1.4rem;
            color: var(--blue-main);
            cursor: pointer;
            width: 48px;
            text-align: center;
        }
        /* 首屏 */
        .hero {
            position: relative;
            padding: 70px 0 60px;
            overflow: hidden;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 3.1rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--blue-deep);
            letter-spacing: -0.01em;
            margin-bottom: 24px;
        }
        .hero-content h1 span {
            color: var(--blue-main);
            background: linear-gradient(145deg, var(--blue-main), #2864d0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.2rem;
            color: var(--gray-600);
            max-width: 600px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            margin-bottom: 40px;
        }
        .hero-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-top: 24px;
        }
        .metric-item {
            display: flex;
            flex-direction: column;
        }
        .metric-value {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--blue-main);
            line-height: 1.2;
        }
        .metric-label {
            font-size: 0.9rem;
            color: var(--gray-600);
        }
        .hero-visual {
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 18px;
            background: transparent;
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.65);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(37, 99, 235, 0.15);
            border-radius: var(--radius-lg);
            padding: 26px 24px;
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .glass-card h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: var(--blue-deep);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 10px;
        }
        .tag {
            background: var(--white);
            border: 1px solid var(--blue-soft);
            border-radius: 100px;
            padding: 4px 14px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--blue-main);
        }
        .badge {
            display: inline-block;
            background: var(--accent-gold);
            color: #1a2a44;
            font-weight: 700;
            font-size: 0.75rem;
            padding: 2px 12px;
            border-radius: 20px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .rating-stars {
            color: var(--accent-gold);
            font-size: 1.2rem;
            letter-spacing: 2px;
        }
        /* 通用section */
        .section {
            padding: 70px 0;
            position: relative;
        }
        .section-light {
            background: transparent;
        }
        .section-header {
            margin-bottom: 44px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--blue-deep);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-header p {
            font-size: 1.1rem;
            color: var(--gray-600);
            max-width: 720px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap-standard);
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap-standard);
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap-standard);
        }
        .card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            border: 1px solid rgba(0, 60, 130, 0.04);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--blue-soft);
        }
        .card-icon {
            font-size: 2rem;
            margin-bottom: 14px;
        }
        .card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--blue-deep);
        }
        .card p {
            color: var(--gray-600);
            font-size: 0.95rem;
            flex: 1;
        }
        .card-footer {
            margin-top: 16px;
        }
        .link-arrow {
            font-weight: 600;
            color: var(--blue-main);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .link-arrow:hover {
            text-decoration: underline;
        }
        /* 对比表格 */
        .table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--gray-200);
            background: #fff;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }
        th {
            background: var(--blue-deep);
            color: #fff;
            font-weight: 600;
            padding: 16px 18px;
            text-align: left;
            font-size: 0.95rem;
        }
        td {
            padding: 16px 18px;
            border-bottom: 1px solid var(--gray-100);
            color: var(--gray-800);
            font-size: 0.95rem;
        }
        tr:last-child td {
            border-bottom: none;
        }
        .highlight-row {
            background: var(--blue-light);
        }
        .score-big {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--blue-main);
        }
        /* 流程步骤 */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step {
            background: white;
            border-radius: var(--radius-md);
            padding: 26px 20px;
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: transform 0.2s;
            border-top: 4px solid var(--blue-main);
        }
        .step:hover {
            transform: translateY(-4px);
        }
        .step-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--blue-soft);
            line-height: 1;
            margin-bottom: 8px;
        }
        .step h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--blue-deep);
        }
        .step p {
            color: var(--gray-600);
            font-size: 0.9rem;
        }
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: white;
            border-radius: var(--radius-md);
            border: 1px solid var(--gray-200);
            overflow: hidden;
            transition: border-color 0.2s;
        }
        .faq-item:hover {
            border-color: var(--blue-soft);
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            color: var(--blue-deep);
            background: #fff;
            transition: background 0.2s;
        }
        .faq-question:hover {
            background: var(--gray-50);
        }
        .faq-question span:last-child {
            font-size: 1.6rem;
            color: var(--blue-main);
            transition: transform 0.3s;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.2s;
            padding: 0 24px;
            color: var(--gray-600);
            line-height: 1.7;
            background: #fff;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 24px 24px;
        }
        .faq-item.active .faq-question span:last-child {
            transform: rotate(45deg);
        }
        /* 评论 */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .review-card {
            background: white;
            border-radius: var(--radius-md);
            padding: 26px 24px;
            box-shadow: var(--shadow-sm);
            transition: all 0.2s;
            border-left: 4px solid var(--blue-main);
        }
        .review-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .review-stars {
            color: var(--accent-gold);
            margin-bottom: 12px;
            font-size: 1rem;
            letter-spacing: 3px;
        }
        .review-text {
            font-size: 0.95rem;
            color: var(--gray-800);
            margin-bottom: 18px;
            font-style: italic;
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--blue-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--blue-main);
        }
        .author-info {
            font-size: 0.85rem;
        }
        .author-name {
            font-weight: 700;
            color: var(--blue-deep);
        }
        .author-title {
            color: var(--gray-600);
        }
        /* 表单 */
        .form-card {
            background: white;
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-md);
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .form-group label {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--gray-800);
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            padding: 14px 16px;
            border: 1.5px solid var(--gray-200);
            border-radius: 14px;
            font-size: 0.95rem;
            transition: border 0.2s, box-shadow 0.2s;
            background: var(--gray-50);
            color: var(--gray-800);
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--blue-main);
            box-shadow: 0 0 0 3px rgba(26, 79, 160, 0.08);
            background: #fff;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-full {
            grid-column: 1 / -1;
        }
        .btn-submit {
            background: linear-gradient(135deg, var(--blue-main), var(--blue-bright));
            color: white;
            border: none;
            padding: 16px 32px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            transition: all 0.2s;
            width: 100%;
            box-shadow: 0 12px 22px -8px rgba(26, 79, 160, 0.4);
        }
        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 18px 28px -8px rgba(26, 79, 160, 0.5);
        }
        /* 文章列表 */
        .article-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .article-link {
            background: white;
            padding: 10px 18px;
            border-radius: 40px;
            border: 1px solid var(--gray-200);
            color: var(--blue-deep);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.2s;
        }
        .article-link:hover {
            background: var(--blue-light);
            border-color: var(--blue-main);
        }
        /* 底部 */
        .footer {
            background: var(--blue-deep);
            color: #d9e6ff;
            padding: 44px 0 24px;
            margin-top: 20px;
        }
        .footer a {
            color: #b8d0ff;
            text-decoration: none;
            transition: color 0.2s;
        }
        .footer a:hover {
            color: #fff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer h4 {
            color: #fff;
            font-size: 1.05rem;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer p {
            color: #bfd5ff;
            font-size: 0.9rem;
            line-height: 1.8;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 0.9rem;
            color: #bfd5ff;
            text-decoration: none;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: #9eb9e6;
        }
        .floating-customer {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
        }
        .customer-btn {
            background: var(--blue-main);
            color: white;
            width: 58px;
            height: 58px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            box-shadow: 0 8px 20px rgba(0, 60, 130, 0.3);
            cursor: pointer;
            border: none;
            transition: transform 0.2s, background 0.2s;
        }
        .customer-btn:hover {
            background: var(--blue-bright);
            transform: scale(1.05);
        }
        .customer-pop {
            position: absolute;
            bottom: 72px;
            right: 0;
            background: white;
            padding: 16px;
            border-radius: 18px;
            box-shadow: var(--shadow-lg);
            width: 200px;
            display: none;
            text-align: center;
            border: 1px solid var(--gray-200);
        }
        .customer-pop img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            margin-bottom: 8px;
        }
        .customer-pop p {
            font-size: 0.8rem;
            color: var(--gray-600);
        }
        .customer-pop.show {
            display: block;
        }
        .back-top {
            position: fixed;
            left: 24px;
            bottom: 24px;
            background: white;
            border: 1px solid var(--gray-200);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--blue-main);
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-sm);
            text-decoration: none;
            transition: all 0.2s;
            z-index: 99;
        }
        .back-top:hover {
            background: var(--blue-light);
            border-color: var(--blue-main);
        }
        .img-responsive {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .logo-img {
            max-width: 100%;
            height: auto;
        }
        /* 滚动动画 */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }
        /* 移动端 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-content h1 {
                font-size: 2.6rem;
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 12px 0;
                gap: 0;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
            }
            .nav-container {
                padding-top: 12px;
                padding-bottom: 12px;
            }
            .menu-toggle {
                display: block;
            }
            .nav-actions .btn-outline {
                display: none;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .grid-3, .grid-2, .grid-4, .review-grid {
                grid-template-columns: 1fr;
            }
            .steps {
                grid-template-columns: 1fr 1fr;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
            .form-card {
                padding: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
            .section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .hero-actions .btn-primary, .hero-actions .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .metric-value {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .steps {
                grid-template-columns: 1fr;
            }
            .hero-metrics {
                gap: 20px;
            }
        }