/* roulang page: index */
/* :root CSS Custom Properties 定义设计系统 */
        :root {
            --color-primary: #4A6FA5;
            --color-primary-dark: #3a5a85;
            --color-accent-1: #FF6B6B;
            --color-accent-1-dark: #e05555;
            --color-accent-2: #51A3A3;
            --color-bg-light: #F8F9FA;
            --color-bg-dark: #2C3E50;
            --color-text-primary: #333333;
            --color-text-secondary: #666666;
            --color-text-muted: #999999;
            --color-border: #dee2e6;
            --color-border-light: #e9ecef;
            --border-radius-base: 0.375rem;
            --border-radius-lg: 0.75rem;
            --border-radius-xl: 1.25rem;
            --shadow-base: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --transition-base: all 0.25s ease-in-out;
            --container-max-width: 1200px;
            --spacing-section: 5rem; /* 用于区块上下内边距 */
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 3rem;
            }
        }

        /* Base Reset & Typography */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei";
            font-size: 1rem;
            line-height: 1.6;
            color: var(--color-text-primary);
            background-color: #fff;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            margin-top: 0;
            margin-bottom: 0.75em;
            line-height: 1.2;
            font-weight: 700;
            color: var(--color-primary);
        }
        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; color: var(--color-primary-dark); }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.25rem; color: var(--color-text-primary);}
        p {
            margin-bottom: 1.5em;
            color: var(--color-text-secondary);
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container-custom {
            width: 100%;
            max-width: var(--container-max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        /* 自定义覆盖 Bootstrap 组件 */

        /* 导航栏 - 分屏联动样式 */
        .navbar-main {
            background-color: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border-light);
            padding-top: 0.75rem;
            padding-bottom: 0.75rem;
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: var(--transition-base);
        }
        .navbar-main .navbar-brand {
            font-weight: 800;
            font-size: 1.75rem;
            color: var(--color-primary);
            display: flex;
            align-items: center;
        }
        .navbar-brand .brand-logo {
            font-weight: 800;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent-2));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            color: var(--color-text-primary);
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius-base);
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--color-primary);
            background-color: rgba(74, 111, 165, 0.08);
        }
        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .btn-search-nav {
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: var(--border-radius-base);
            padding: 0.375rem 0.75rem;
            color: var(--color-text-secondary);
            transition: var(--transition-base);
        }
        .btn-search-nav:hover {
            background-color: var(--color-bg-light);
            border-color: var(--color-primary);
        }
        /* 移动端导航菜单 */
        .navbar-toggler {
            border: none;
            padding: 0.25rem 0.5rem;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }

        /* 按钮样式 */
        .btn {
            border-radius: var(--border-radius-lg);
            padding: 0.75rem 1.75rem;
            font-weight: 600;
            transition: var(--transition-base);
            border: 2px solid transparent;
        }
        .btn-primary {
            background-color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn-primary:hover,
        .btn-primary:active,
        .btn-primary:focus {
            background-color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-outline-primary {
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn-outline-primary:hover {
            background-color: var(--color-primary);
            color: white;
        }
        .btn-accent {
            background-color: var(--color-accent-1);
            border-color: var(--color-accent-1);
            color: white;
        }
        .btn-accent:hover {
            background-color: var(--color-accent-1-dark);
            border-color: var(--color-accent-1-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        /* 卡片样式 */
        .card-custom {
            border: none;
            border-radius: var(--border-radius-lg);
            box-shadow: var(--shadow-base);
            overflow: hidden;
            transition: var(--transition-base);
            height: 100%;
            background-color: #fff;
        }
        .card-custom:hover {
            transform: translateY(-8px) scale(1.02);
            box-shadow: var(--shadow-hover);
        }
        .card-body-custom {
            padding: 2rem;
        }
        .card-img-top-custom {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .card-title {
            color: var(--color-primary);
            margin-bottom: 0.75rem;
        }

        /* 首页首屏 Hero - 左右分屏布局 */
        .hero-section {
            padding-top: calc(var(--spacing-section) + 1rem);
            padding-bottom: var(--spacing-section);
            min-height: 85vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            right: 0;
            top: 0;
            width: 48%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center left;
            border-radius: var(--border-radius-xl) 0 0 var(--border-radius-xl);
            z-index: -1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-content h1 {
            font-size: 3rem;
            line-height: 1.15;
            margin-bottom: 1.5rem;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent-2));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-lead {
            font-size: 1.25rem;
            color: var(--color-text-secondary);
            margin-bottom: 2.5rem;
            max-width: 600px;
        }
        .hero-cta {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        @media (max-width: 992px) {
            .hero-bg {
                width: 100%;
                position: relative;
                border-radius: var(--border-radius-lg);
                height: 300px;
                margin-top: 2rem;
            }
            .hero-content h1 {
                font-size: 2.5rem;
            }
            .hero-lead {
                font-size: 1.125rem;
            }
        }

        /* 核心指标看板 */
        .metrics-section {
            background-color: var(--color-bg-light);
        }
        .metric-card {
            text-align: center;
            padding: 2rem 1.5rem;
            background: white;
            border-radius: var(--border-radius-lg);
            box-shadow: var(--shadow-base);
            transition: var(--transition-base);
        }
        .metric-card:hover {
            box-shadow: var(--shadow-hover);
        }
        .metric-icon {
            font-size: 2.5rem;
            color: var(--color-accent-1);
            margin-bottom: 1rem;
        }
        .metric-value {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1;
            color: var(--color-primary);
            margin-bottom: 0.5rem;
        }
        .metric-label {
            color: var(--color-text-secondary);
            font-size: 1.125rem;
        }

        /* 服务矩阵 - 非等分布局 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            grid-template-rows: auto auto;
            gap: 2rem;
        }
        .service-card-large {
            grid-column: span 8;
            grid-row: span 1;
        }
        .service-card-small {
            grid-column: span 4;
            grid-row: span 1;
        }
        @media (max-width: 992px) {
            .service-card-large,
            .service-card-small {
                grid-column: span 12;
            }
        }

        /* 模拟器结果对比展示区 */
        .comparison-tabs .nav-link {
            color: var(--color-text-secondary);
            font-weight: 600;
            padding: 0.75rem 1.5rem;
            border-radius: var(--border-radius-lg);
            border: 1px solid transparent;
            margin-right: 0.5rem;
            transition: var(--transition-base);
        }
        .comparison-tabs .nav-link.active {
            background-color: var(--color-primary);
            color: white;
            border-color: var(--color-primary);
        }
        .comparison-tabs .nav-link:not(.active):hover {
            background-color: var(--color-bg-light);
            border-color: var(--color-border);
        }
        .comparison-chart {
            background-color: white;
            border-radius: var(--border-radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-base);
            border-left: 5px solid var(--color-accent-1);
        }
        .chart-bar {
            display: flex;
            align-items: center;
            margin-bottom: 1.5rem;
        }
        .chart-label {
            min-width: 150px;
            font-weight: 600;
        }
        .chart-bar-inner {
            flex-grow: 1;
            height: 30px;
            background-color: var(--color-bg-light);
            border-radius: 15px;
            overflow: hidden;
            position: relative;
        }
        .chart-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--color-accent-2), var(--color-primary));
            border-radius: 15px;
            transition: width 1s ease-in-out;
        }
        .chart-value {
            min-width: 60px;
            text-align: right;
            font-weight: 700;
            color: var(--color-primary);
        }

        /* FAQ 折叠区 */
        .faq-section {
            background-color: var(--color-bg-light);
        }
        .accordion-item-custom {
            border: none;
            background-color: transparent;
            margin-bottom: 1rem;
        }
        .accordion-button-custom {
            background-color: white;
            color: var(--color-text-primary);
            font-weight: 600;
            font-size: 1.125rem;
            padding: 1.25rem 1.5rem;
            border-radius: var(--border-radius-lg) !important;
            box-shadow: var(--shadow-base);
            border: none;
        }
        .accordion-button-custom:not(.collapsed) {
            background-color: var(--color-primary);
            color: white;
            box-shadow: var(--shadow-base);
        }
        .accordion-button-custom:focus {
            box-shadow: 0 0 0 0.25rem rgba(74, 111, 165, 0.25);
            border-color: var(--color-primary);
        }
        .accordion-button-custom::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23333'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }
        .accordion-button-custom:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='white'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }
        .accordion-body-custom {
            padding: 1.5rem;
            background-color: white;
            border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
            box-shadow: var(--border-radius-lg);
            margin-top: -8px;
        }

        /* 转化引导表单区 */
        .lead-form {
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent-2));
            border-radius: var(--border-radius-xl);
            padding: 4rem 3rem;
            color: white;
            box-shadow: var(--shadow-hover);
        }
        .lead-form h2, .lead-form p {
            color: white;
        }
        .form-control-custom {
            background-color: rgba(255, 255, 255, 0.9);
            border: 2px solid transparent;
            border-radius: var(--border-radius-base);
            padding: 0.875rem 1rem;
            font-size: 1rem;
            transition: var(--transition-base);
        }
        .form-control-custom:focus {
            background-color: white;
            border-color: var(--color-accent-1);
            box-shadow: 0 0 0 0.25rem rgba(255, 107, 107, 0.25);
        }

        /* 页脚 */
        .footer-main {
            background-color: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding-top: 3rem;
            padding-bottom: 2rem;
        }
        .footer-brand {
            font-size: 1.75rem;
            font-weight: 800;
            color: white;
            margin-bottom: 1rem;
        }
        .footer-description {
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 1.5rem;
            max-width: 300px;
        }
        .footer-links h5 {
            color: white;
            font-size: 1.125rem;
            margin-bottom: 1.25rem;
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition-base);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 0.5rem;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 3rem;
            padding-top: 1.5rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.875rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.75rem; }
            h3 { font-size: 1.375rem; }
            .btn { padding: 0.625rem 1.5rem; }
            .hero-content h1 { font-size: 2rem; }
            .lead-form { padding: 2.5rem 1.5rem; }
            .metric-value { font-size: 2.5rem; }
        }
        @media (max-width: 576px) {
            .hero-cta {
                flex-direction: column;
                align-items: flex-start;
            }
            .comparison-tabs .nav-link {
                display: block;
                margin-right: 0;
                margin-bottom: 0.5rem;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
            /* 色彩系统 */
            --color-primary: #4A6FA5;
            --color-primary-dark: #3A5985;
            --color-accent-1: #FF6B6B;
            --color-accent-1-dark: #E55A5A;
            --color-accent-2: #51A3A3;
            --color-accent-2-dark: #418B8B;
            --color-text-primary: #333333;
            --color-text-secondary: #666666;
            --color-text-light: #999999;
            --color-bg-main: #FFFFFF;
            --color-bg-secondary: #F8F9FA;
            --color-bg-dark: #2C3E50;
            --color-border: #E9ECEF;

            /* 设计变量 */
            --radius-base: 0.375rem;
            --radius-large: 0.75rem;
            --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-medium: 0 8px 24px rgba(0, 0, 0, 0.12);
            --transition-base: all 0.25s ease;
        }

        /* Base Reset & Global */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei";
            font-size: 1rem;
            line-height: 1.6;
            color: var(--color-text-primary);
            background-color: var(--color-bg-main);
            margin: 0;
            overflow-x: hidden;
        }
        .container-custom {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            margin-left: auto;
            margin-right: auto;
        }
        @media (min-width: 1400px) {
            .container-custom {
                max-width: 1320px;
            }
        }
        @media (max-width: 768px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* 排版 */
        h1, h2, h3, h4, h5 {
            line-height: 1.2;
            font-weight: 600;
            margin-bottom: 0.75em;
        }
        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.25rem; }
        h5 { font-size: 1rem; }
        p {
            margin-bottom: 1.5em;
        }
        .text-lead {
            font-size: 1.125rem;
            color: var(--color-text-secondary);
        }
        @media (max-width: 992px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.75rem; }
            h3 { font-size: 1.375rem; }
        }
        @media (max-width: 768px) {
            h1 { font-size: 1.75rem; }
            h2 { font-size: 1.5rem; }
            h3 { font-size: 1.25rem; }
        }

        /* 板块间距 */
        .section {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        .section-sm {
            padding-top: 3rem;
            padding-bottom: 3rem;
        }
        .section-tight {
            padding-top: 2rem;
            padding-bottom: 2rem;
        }
        @media (max-width: 768px) {
            .section {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
            .section-sm {
                padding-top: 2rem;
                padding-bottom: 2rem;
            }
        }

        /* 链接与按钮重置 */
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        button, input, textarea, select {
            font-family: inherit;
        }

        /* 导航 - 复用首页样式并调整 active 状态 */
        .navbar-main {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            padding-top: 1rem;
            padding-bottom: 1rem;
            position: relative;
            z-index: 1020;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--color-primary);
            display: flex;
            align-items: center;
        }
        .brand-logo {
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent-2));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-link {
            font-weight: 500;
            color: var(--color-text-secondary) !important;
            padding: 0.5rem 1rem !important;
            border-radius: var(--radius-base);
            position: relative;
        }
        .nav-link.active {
            color: var(--color-primary) !important;
            background-color: rgba(74, 111, 165, 0.08);
        }
        .nav-link:not(.active):hover {
            color: var(--color-primary) !important;
            background-color: rgba(74, 111, 165, 0.04);
        }
        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .btn-search-nav {
            background: transparent;
            border: none;
            color: var(--color-text-secondary);
            font-size: 1.25rem;
            padding: 0.375rem 0.5rem;
            border-radius: var(--radius-base);
            transition: var(--transition-base);
        }
        .btn-search-nav:hover {
            color: var(--color-primary);
            background-color: rgba(74, 111, 165, 0.08);
        }
        .btn-accent {
            background-color: var(--color-accent-1);
            border: none;
            color: white;
            font-weight: 500;
            padding: 0.625rem 1.5rem;
            border-radius: var(--radius-large);
            transition: var(--transition-base);
        }
        .btn-accent:hover {
            background-color: var(--color-accent-1-dark);
            color: white;
            transform: translateY(-2px);
            box-shadow: var(--shadow-medium);
        }
        .navbar-toggler {
            border: none;
            padding: 0.375rem;
            font-size: 1.5rem;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        @media (max-width: 992px) {
            .navbar-collapse {
                background-color: white;
                padding: 1.5rem;
                border-radius: var(--radius-large);
                box-shadow: var(--shadow-medium);
                margin-top: 1rem;
            }
            .navbar-actions {
                margin-top: 1rem;
                padding-top: 1rem;
                border-top: 1px solid var(--color-border);
            }
        }

        /* 分类页 Hero */
        .category-hero {
            background: linear-gradient(rgba(42, 62, 91, 0.85), rgba(42, 62, 91, 0.9)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            color: white;
            padding-top: 6rem;
            padding-bottom: 6rem;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 100px;
            background: linear-gradient(to top, var(--color-bg-main), transparent);
            z-index: 1;
        }
        .category-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .category-hero h1 {
            color: white;
            margin-bottom: 1.5rem;
        }
        .category-hero .text-lead {
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            font-size: 1.25rem;
        }
        @media (max-width: 768px) {
            .category-hero {
                padding-top: 4rem;
                padding-bottom: 4rem;
                text-align: center;
            }
        }

        /* 功能特性列表 - 特色布局 */
        .feature-item {
            background: var(--color-bg-main);
            border-radius: var(--radius-large);
            padding: 2.5rem;
            box-shadow: var(--shadow-soft);
            height: 100%;
            border: 1px solid var(--color-border);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .feature-item:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-medium);
            border-color: var(--color-primary);
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent-2));
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .feature-badge {
            display: inline-block;
            background-color: var(--color-accent-1);
            color: white;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 0.75rem;
            border-radius: 100px;
            margin-bottom: 0.5rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .feature-item h3 {
            margin-top: 0.5rem;
        }
        .feature-list {
            list-style: none;
            padding-left: 0;
            margin-top: 1.5rem;
        }
        .feature-list li {
            padding-left: 1.75rem;
            position: relative;
            margin-bottom: 0.75rem;
            color: var(--color-text-secondary);
        }
        .feature-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.75em;
            width: 8px;
            height: 8px;
            background-color: var(--color-accent-2);
            border-radius: 50%;
        }

        /* 深度功能解析区块 - 左右交替 */
        .function-block {
            padding: 3rem 0;
            border-bottom: 1px solid var(--color-border);
        }
        .function-block:last-of-type {
            border-bottom: none;
        }
        .function-image {
            border-radius: var(--radius-large);
            overflow: hidden;
            box-shadow: var(--shadow-medium);
        }
        .function-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s ease;
        }
        .function-image:hover img {
            transform: scale(1.05);
        }
        .function-content {
            padding: 1rem 0;
        }
        .function-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background-color: rgba(81, 163, 163, 0.1);
            color: var(--color-accent-2);
            font-size: 0.875rem;
            font-weight: 600;
            padding: 0.375rem 1rem;
            border-radius: 100px;
            margin-bottom: 1rem;
        }

        /* 资源下载指引 */
        .resource-card {
            background: linear-gradient(135deg, var(--color-bg-secondary), white);
            border-radius: var(--radius-large);
            padding: 3rem;
            box-shadow: var(--shadow-soft);
            border: 2px solid transparent;
            background-clip: padding-box;
            position: relative;
        }
        .resource-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            border-radius: var(--radius-large);
            padding: 2px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent-2));
            -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;
        }
        .resource-steps {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin: 2.5rem 0;
            position: relative;
        }
        .resource-steps::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(to right, var(--color-primary), var(--color-accent-2));
            z-index: 1;
        }
        .step {
            position: relative;
            z-index: 2;
            background-color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--color-primary);
            box-shadow: 0 0 0 4px white, 0 4px 12px rgba(0,0,0,0.1);
        }
        @media (max-width: 768px) {
            .resource-steps {
                flex-direction: column;
                gap: 2rem;
                margin: 2rem 0;
            }
            .resource-steps::before {
                width: 2px;
                height: 80%;
                top: 10%;
                left: 50%;
                transform: translateX(-50%);
            }
            .step {
                width: 40px;
                height: 40px;
            }
        }

        /* FAQ 折叠区 */
        .faq-accordion .accordion-item {
            border: none;
            border-bottom: 1px solid var(--color-border);
            background-color: transparent;
        }
        .faq-accordion .accordion-button {
            background-color: transparent;
            color: var(--color-text-primary);
            font-weight: 600;
            font-size: 1.125rem;
            padding: 1.5rem 0;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background-color: transparent;
        }
        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%234A6FA5'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23FF6B6B'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }
        .faq-accordion .accordion-body {
            padding: 0 0 1.5rem 0;
            color: var(--color-text-secondary);
        }

        /* CTA 行动召唤区 */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent-2-dark));
            color: white;
            border-radius: var(--radius-large);
            padding: 4rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
        }
        .cta-section h2 {
            color: white;
            position: relative;
            z-index: 2;
        }
        .cta-section .text-lead {
            color: rgba(255, 255, 255, 0.9);
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 2;
        }
        .btn-outline-light {
            border: 2px solid white;
            color: white;
            background: transparent;
            padding: 0.75rem 2rem;
            border-radius: var(--radius-large);
            font-weight: 500;
            transition: var(--transition-base);
        }
        .btn-outline-light:hover {
            background-color: white;
            color: var(--color-primary);
        }

        /* 页脚 - 复用首页 */
        .footer-main {
            background-color: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding-top: 4rem;
            padding-bottom: 2rem;
        }
        .footer-brand {
            font-size: 1.75rem;
            font-weight: 700;
            color: white;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, white, #d1e3ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-description {
            font-size: 0.9375rem;
            line-height: 1.7;
            margin-bottom: 2rem;
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-links h5 {
            color: white;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1.25rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
            margin-bottom: 0;
        }
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color 0.2s;
            font-size: 0.9375rem;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
            margin-top: 3rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.875rem;
        }
        @media (max-width: 768px) {
            .footer-main {
                text-align: center;
            }
            .footer-links {
                margin-bottom: 2rem;
            }
        }