/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1E88E5;
            --primary-dark: #1565C0;
            --primary-light: #42A5F5;
            --primary-bg: #E3F2FD;
            --accent: #FFB300;
            --accent-hover: #FFA000;
            --accent-shadow: rgba(255, 179, 0, 0.4);
            --bg-body: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-dark: #263238;
            --bg-dark-light: #37474F;
            --text-h1: #0D47A1;
            --text-h2: #1A237E;
            --text-h3: #37474F;
            --text-body: #546E7A;
            --text-muted: #90A4AE;
            --text-white: #FFFFFF;
            --border-color: #CFD8DC;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-pill: 50px;
            --shadow-card: 0 4px 24px rgba(30, 136, 229, 0.08);
            --shadow-card-hover: 0 8px 32px rgba(30, 136, 229, 0.15);
            --shadow-nav: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-btn: 0 4px 15px rgba(255, 179, 0, 0.4);
            --transition: 0.3s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            letter-spacing: -0.02em;
            line-height: 1.3;
        }
        p {
            margin-bottom: 1rem;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* ===== 导航胶囊 ===== */
        .navbar-capsule {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-pill);
            box-shadow: var(--shadow-nav);
            padding: 0.5rem 1.5rem;
            margin: 1rem auto;
            max-width: 1100px;
            transition: background var(--transition);
        }
        .navbar-capsule .navbar-brand {
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-h1);
            letter-spacing: -0.02em;
            padding: 0.4rem 0;
        }
        .navbar-capsule .navbar-brand i {
            color: var(--primary);
            margin-right: 0.4rem;
            font-size: 1.5rem;
        }
        .navbar-capsule .nav-link {
            border-radius: 30px;
            padding: 0.4rem 1.2rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition);
            font-size: 0.95rem;
        }
        .navbar-capsule .nav-link:hover {
            background: rgba(30, 136, 229, 0.1);
            color: var(--primary);
        }
        .navbar-capsule .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 12px rgba(30, 136, 229, 0.25);
        }
        .navbar-capsule .nav-link.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }
        .navbar-toggler {
            border: none;
            padding: 0.4rem 0.6rem;
            font-size: 1.3rem;
            color: var(--text-h1);
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--primary);
        }
        @media (max-width: 767.98px) {
            .navbar-capsule {
                border-radius: 20px;
                margin: 0.8rem 0.8rem;
                padding: 0.4rem 1rem;
            }
            .navbar-capsule .navbar-collapse {
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                border-radius: 20px;
                padding: 1rem 0.5rem;
                margin-top: 0.6rem;
                box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            }
            .navbar-capsule .nav-link {
                padding: 0.6rem 1.2rem;
                text-align: center;
            }
        }
        @media (max-width: 575.98px) {
            .navbar-capsule {
                margin: 0.5rem 0.5rem;
                padding: 0.3rem 0.8rem;
            }
            .navbar-capsule .navbar-brand {
                font-size: 1.1rem;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #1E88E5 0%, #42A5F5 100%);
            background-size: cover;
            background-position: center;
            overflow: hidden;
            margin-top: -6rem;
            padding-top: 6rem;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(13, 71, 161, 0.35);
            z-index: 1;
        }
        .hero-section .hero-bg-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            text-align: center;
            padding: 3rem 0;
        }
        .hero-content h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-white);
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
            margin-bottom: 1.2rem;
            letter-spacing: -0.03em;
        }
        .hero-content .hero-sub {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.88);
            max-width: 700px;
            margin: 0 auto 2rem;
            line-height: 1.7;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }
        .hero-btns {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        .hero-btns .btn {
            border-radius: 30px;
            padding: 0.8rem 2.4rem;
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition);
        }
        .hero-btns .btn-primary-custom {
            background: var(--accent);
            color: #fff;
            border: none;
            box-shadow: 0 4px 20px rgba(255, 179, 0, 0.35);
        }
        .hero-btns .btn-primary-custom:hover {
            background: var(--accent-hover);
            transform: scale(1.04);
            box-shadow: 0 6px 28px rgba(255, 179, 0, 0.45);
            color: #fff;
        }
        .hero-btns .btn-outline-custom {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.75);
            backdrop-filter: blur(4px);
        }
        .hero-btns .btn-outline-custom:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
            transform: scale(1.04);
        }
        @media (max-width: 767.98px) {
            .hero-section {
                min-height: 70vh;
                margin-top: -5rem;
                padding-top: 5rem;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero-content .hero-sub {
                font-size: 1rem;
                padding: 0 0.5rem;
            }
            .hero-btns .btn {
                padding: 0.6rem 1.8rem;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 575.98px) {
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .hero-btns .btn {
                width: 80%;
            }
        }

        /* ===== 通用板块 ===== */
        .section-padding {
            padding: 4.5rem 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-h2);
            margin-bottom: 0.6rem;
            text-align: center;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 2.8rem;
            line-height: 1.7;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 0.8rem auto 2rem;
        }
        @media (max-width: 767.98px) {
            .section-padding {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                padding: 0 0.8rem;
            }
        }

        /* ===== 卡片系统 ===== */
        .custom-card {
            background: var(--bg-card);
            border: none;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform 0.25s ease;
            overflow: hidden;
            height: 100%;
        }
        .custom-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .custom-card .card-img-top {
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            object-fit: cover;
            height: 200px;
            width: 100%;
        }
        .custom-card .card-body {
            padding: 1.6rem;
        }
        .custom-card .card-body .card-title {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-h3);
            margin-bottom: 0.6rem;
        }
        .custom-card .card-body .card-text {
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .custom-card .card-body .card-tag {
            display: inline-block;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 500;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            margin-bottom: 0.6rem;
        }
        .custom-card .card-body .card-link {
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: gap var(--transition);
        }
        .custom-card .card-body .card-link:hover {
            gap: 0.6rem;
            color: var(--primary-dark);
        }
        @media (max-width: 575.98px) {
            .custom-card .card-img-top {
                height: 160px;
            }
            .custom-card .card-body {
                padding: 1.2rem;
            }
        }

        /* ===== 按钮样式 ===== */
        .btn-accent {
            background: var(--accent);
            border: none;
            color: #fff;
            border-radius: 30px;
            padding: 0.7rem 2rem;
            font-weight: 600;
            transition: all var(--transition);
            font-size: 1rem;
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            transform: scale(1.03);
            box-shadow: var(--shadow-btn);
            color: #fff;
        }
        .btn-outline-primary-custom {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: 30px;
            padding: 0.65rem 2rem;
            font-weight: 600;
            transition: all var(--transition);
            font-size: 1rem;
        }
        .btn-outline-primary-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: scale(1.03);
            box-shadow: 0 4px 16px rgba(30, 136, 229, 0.3);
        }
        .btn-sm-custom {
            padding: 0.45rem 1.4rem;
            font-size: 0.9rem;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--primary-bg);
        }
        .stat-item {
            text-align: center;
            padding: 1.5rem 0.5rem;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            display: block;
        }
        .stat-label {
            font-size: 1rem;
            color: var(--text-body);
            font-weight: 500;
            margin-top: 0.3rem;
        }
        @media (max-width: 767.98px) {
            .stat-number {
                font-size: 2.2rem;
            }
            .stat-label {
                font-size: 0.9rem;
            }
        }
        @media (max-width: 575.98px) {
            .stat-number {
                font-size: 1.8rem;
            }
        }

        /* ===== 步骤条 ===== */
        .step-wrapper {
            display: flex;
            gap: 2rem;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }
        .step-wrapper::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 3px;
            background: linear-gradient(to right, var(--primary), var(--accent));
            border-radius: 3px;
            z-index: 0;
        }
        .step-item {
            flex: 1 1 180px;
            max-width: 220px;
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--bg-body);
            padding: 0.8rem 0.5rem;
            border-radius: var(--radius-md);
        }
        .step-circle {
            width: 56px;
            height: 56px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 700;
            margin: 0 auto 1rem;
            box-shadow: 0 4px 16px rgba(30, 136, 229, 0.25);
            border: 3px solid #fff;
        }
        .step-item:nth-child(2) .step-circle {
            background: var(--primary-light);
        }
        .step-item:nth-child(3) .step-circle {
            background: var(--accent);
        }
        .step-item:nth-child(4) .step-circle {
            background: var(--accent-hover);
        }
        .step-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-h3);
            margin-bottom: 0.3rem;
        }
        .step-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        @media (max-width: 767.98px) {
            .step-wrapper::before {
                display: none;
            }
            .step-item {
                flex: 1 1 100%;
                max-width: 100%;
                display: flex;
                align-items: center;
                gap: 1.2rem;
                text-align: left;
                padding: 0.8rem 1rem;
            }
            .step-circle {
                margin: 0;
                flex-shrink: 0;
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
            }
            .step-content {
                flex: 1;
            }
        }

        /* ===== FAQ 手风琴 ===== */
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .faq-question {
            padding: 1.2rem 1.6rem;
            font-weight: 600;
            color: var(--text-h3);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
            background: var(--bg-card);
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--primary-bg);
        }
        .faq-question i {
            transition: transform var(--transition);
            color: var(--primary);
            font-size: 1.1rem;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 1.6rem 1.2rem;
            color: var(--text-body);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        @media (max-width: 575.98px) {
            .faq-question {
                padding: 1rem 1.2rem;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 1.2rem 1rem;
                font-size: 0.9rem;
            }
        }

        /* ===== 最新资讯 ===== */
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 1.4rem 1.6rem;
            transition: box-shadow var(--transition), transform 0.25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .news-card .news-badge {
            display: inline-block;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 0.15rem 0.7rem;
            border-radius: 20px;
            margin-bottom: 0.5rem;
            align-self: flex-start;
        }
        .news-card .news-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-h3);
            margin-bottom: 0.4rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-title a {
            color: inherit;
        }
        .news-card .news-title a:hover {
            color: var(--primary);
        }
        .news-card .news-summary {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
            margin-bottom: 0.6rem;
        }
        .news-card .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(207, 216, 220, 0.4);
            padding-top: 0.6rem;
            margin-top: auto;
        }
        .news-card .news-meta time {
            font-size: 0.82rem;
        }
        .news-card .news-meta a {
            color: var(--primary);
            font-weight: 500;
        }
        .news-card .news-meta a:hover {
            color: var(--primary-dark);
        }
        .empty-state {
            text-align: center;
            padding: 2.5rem 1rem;
            color: var(--text-muted);
            font-size: 1rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
        }
        .empty-state i {
            font-size: 2.5rem;
            color: var(--border-color);
            margin-bottom: 0.8rem;
            display: block;
        }

        /* ===== 联系表单 ===== */
        .contact-section {
            background: var(--bg-card);
        }
        .contact-form .form-control {
            border-radius: var(--radius-sm);
            border: 1.5px solid var(--border-color);
            padding: 0.7rem 1rem;
            font-size: 0.95rem;
            transition: border-color var(--transition), box-shadow var(--transition);
            background: var(--bg-body);
        }
        .contact-form .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.12);
            outline: none;
        }
        .contact-form .form-label {
            font-weight: 500;
            color: var(--text-h3);
            font-size: 0.92rem;
            margin-bottom: 0.3rem;
        }
        .contact-form textarea {
            resize: vertical;
            min-height: 120px;
        }
        .contact-info-block {
            padding: 1.5rem;
            background: var(--primary-bg);
            border-radius: var(--radius-md);
            height: 100%;
        }
        .contact-info-block .info-item {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            margin-bottom: 1.2rem;
        }
        .contact-info-block .info-item i {
            font-size: 1.3rem;
            color: var(--primary);
            width: 24px;
            text-align: center;
            margin-top: 0.2rem;
        }
        .contact-info-block .info-item .info-text {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.5;
        }
        @media (max-width: 767.98px) {
            .contact-info-block {
                margin-top: 2rem;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 3.5rem 0 1.5rem;
        }
        .footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .footer .footer-brand i {
            color: var(--accent);
            margin-right: 0.4rem;
        }
        .footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.6;
            max-width: 300px;
        }
        .footer h5 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1rem;
        }
        .footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer .footer-links a:hover {
            color: var(--primary-light);
        }
        .footer .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            margin-right: 0.6rem;
            transition: all var(--transition);
        }
        .footer .social-links a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            margin-top: 2.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }
        @media (max-width: 767.98px) {
            .footer {
                padding: 2.5rem 0 1rem;
            }
            .footer .footer-brand {
                font-size: 1.1rem;
            }
            .footer .footer-desc {
                max-width: 100%;
            }
            .footer .social-links a {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
        }

        /* ===== 杂项 ===== */
        .bg-soft-primary {
            background: var(--primary-bg);
        }
        .text-primary-custom {
            color: var(--primary);
        }
        .text-accent {
            color: var(--accent);
        }
        .rounded-custom {
            border-radius: var(--radius-md);
        }
        .shadow-custom {
            box-shadow: var(--shadow-card);
        }
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: 0 4px 16px rgba(30, 136, 229, 0.3);
            z-index: 999;
            transition: all var(--transition);
            opacity: 0;
            visibility: hidden;
            border: none;
            cursor: pointer;
        }
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 6px 24px rgba(30, 136, 229, 0.4);
            color: #fff;
        }
        @media (max-width: 575.98px) {
            .back-to-top {
                bottom: 1.2rem;
                right: 1.2rem;
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }
        }

        /* ===== 过渡与微动效 ===== */
        .fade-in-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .stagger-1 {
            transition-delay: 0.1s;
        }
        .stagger-2 {
            transition-delay: 0.2s;
        }
        .stagger-3 {
            transition-delay: 0.3s;
        }
        .stagger-4 {
            transition-delay: 0.4s;
        }

/* roulang page: category1 */
:root {
            --primary: #1E88E5;
            --primary-dark: #0D47A1;
            --primary-light: #42A5F5;
            --accent: #FFB300;
            --accent-dark: #FFA000;
            --bg-light: #F8FAFC;
            --bg-white: #FFFFFF;
            --text-heading: #0D47A1;
            --text-h2: #1A237E;
            --text-h3: #37474F;
            --text-body: #546E7A;
            --text-muted: #90A4AE;
            --border-color: #E0E7EF;
            --radius-card: 12px;
            --radius-nav: 50px;
            --radius-btn: 30px;
            --shadow-card: 0 4px 24px rgba(30, 136, 229, 0.08);
            --shadow-card-hover: 0 8px 32px rgba(30, 136, 229, 0.15);
            --shadow-nav: 0 4px 20px rgba(0, 0, 0, 0.06);
            --transition-base: all 0.3s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-stack);
            background: var(--bg-light);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            padding-left: 1rem;
            padding-right: 1rem;
            margin: 0 auto;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            letter-spacing: -0.02em;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--text-heading);
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 600;
            color: var(--text-h2);
            margin-bottom: 1.5rem;
        }
        h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text-h3);
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-h3);
        }
        p {
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 1rem;
        }
        .section-padding {
            padding: 4rem 0;
        }
        @media (max-width: 576px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .section-padding {
                padding: 2.5rem 0;
            }
        }

        /* ===== Navigation Capsule ===== */
        .navbar-capsule {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: 50px;
            box-shadow: var(--shadow-nav);
            padding: 0.5rem 1.5rem;
            margin: 1rem auto;
            max-width: 1140px;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }
        .navbar-capsule .navbar-brand {
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 0;
        }
        .navbar-capsule .navbar-brand i {
            color: var(--accent);
            font-size: 1.4rem;
        }
        .navbar-capsule .navbar-brand:hover {
            color: var(--primary);
        }
        .navbar-capsule .nav-item .nav-link {
            border-radius: 30px;
            padding: 0.4rem 1.2rem;
            font-weight: 500;
            color: var(--text-h3);
            transition: var(--transition-base);
            font-size: 0.95rem;
        }
        .navbar-capsule .nav-item .nav-link:hover {
            background: rgba(30, 136, 229, 0.1);
            color: var(--primary);
        }
        .navbar-capsule .nav-item .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(30, 136, 229, 0.25);
        }
        .navbar-capsule .navbar-toggler {
            border: none;
            padding: 0.4rem 0.8rem;
            color: var(--text-h3);
            font-size: 1.3rem;
            background: transparent;
        }
        .navbar-capsule .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 8px;
        }
        @media (max-width: 767.98px) {
            .navbar-capsule {
                margin: 0.75rem;
                border-radius: 30px;
                padding: 0.5rem 1rem;
            }
            .navbar-capsule .navbar-collapse {
                background: rgba(255, 255, 255, 0.98);
                border-radius: 24px;
                padding: 0.75rem 0.5rem;
                margin-top: 0.5rem;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
            }
            .navbar-capsule .nav-item .nav-link {
                padding: 0.6rem 1rem;
                text-align: center;
            }
            .navbar-capsule .nav-item .nav-link.active {
                background: var(--primary);
                color: #fff;
            }
        }

        /* ===== Hero ===== */
        .hero-category {
            position: relative;
            background: linear-gradient(135deg, #1E88E5 0%, #42A5F5 100%);
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 5rem 1rem 4rem;
            overflow: hidden;
            border-radius: 0 0 40px 40px;
            margin-bottom: 0;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .hero-category .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .hero-category .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 600;
            padding: 0.35rem 1.2rem;
            border-radius: 30px;
            letter-spacing: 0.3px;
            margin-bottom: 1.2rem;
            border: 1px solid rgba(255, 255, 255, 0.25);
        }
        .hero-category h1 {
            color: #fff;
            font-size: 2.8rem;
            font-weight: 700;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.12);
            margin-bottom: 1rem;
        }
        .hero-category .hero-sub {
            color: rgba(255, 255, 255, 0.88);
            font-size: 1.15rem;
            line-height: 1.7;
            max-width: 640px;
            margin: 0 auto 2rem;
            text-shadow: 0 1px 8px rgba(0, 0, 0, 0.08);
        }
        .hero-category .btn-hero-primary {
            background: var(--accent);
            border: none;
            color: #fff;
            border-radius: 30px;
            padding: 0.75rem 2.5rem;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition-base);
            box-shadow: 0 4px 16px rgba(255, 179, 0, 0.35);
            display: inline-block;
        }
        .hero-category .btn-hero-primary:hover {
            background: var(--accent-dark);
            transform: scale(1.03);
            box-shadow: 0 6px 24px rgba(255, 179, 0, 0.45);
            color: #fff;
        }
        .hero-category .btn-hero-secondary {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.7);
            color: #fff;
            border-radius: 30px;
            padding: 0.7rem 2.2rem;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition-base);
            display: inline-block;
            margin-left: 0.75rem;
        }
        .hero-category .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
        }
        @media (max-width: 576px) {
            .hero-category {
                min-height: 320px;
                padding: 3.5rem 1rem 3rem;
                border-radius: 0 0 24px 24px;
            }
            .hero-category h1 {
                font-size: 1.8rem;
            }
            .hero-category .hero-sub {
                font-size: 1rem;
            }
            .hero-category .btn-hero-primary,
            .hero-category .btn-hero-secondary {
                display: block;
                width: 100%;
                max-width: 280px;
                margin: 0.5rem auto;
            }
        }

        /* ===== Section Titles ===== */
        .section-title-wrapper {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-title-wrapper h2 {
            margin-bottom: 0.75rem;
        }
        .section-title-wrapper .section-desc {
            max-width: 640px;
            margin: 0 auto;
            color: var(--text-body);
            font-size: 1.05rem;
        }
        .section-title-wrapper .title-underline {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 1rem auto 0;
        }

        /* ===== Cards ===== */
        .card-custom {
            background: var(--bg-white);
            border: none;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.3s, transform 0.2s;
            overflow: hidden;
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .card-custom .card-img-top {
            border-radius: var(--radius-card) var(--radius-card) 0 0;
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .card-custom .card-body {
            padding: 1.5rem;
        }
        .card-custom .card-title {
            font-weight: 600;
            color: var(--text-h3);
            margin-bottom: 0.75rem;
            font-size: 1.15rem;
        }
        .card-custom .card-text {
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .card-custom .card-tag {
            display: inline-block;
            background: rgba(30, 136, 229, 0.08);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.2rem 0.9rem;
            border-radius: 30px;
            margin-bottom: 0.75rem;
        }

        /* ===== Feature Grid ===== */
        .feature-icon {
            width: 56px;
            height: 56px;
            background: rgba(30, 136, 229, 0.08);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 1rem;
            transition: var(--transition-base);
        }
        .card-custom:hover .feature-icon {
            background: var(--primary);
            color: #fff;
        }

        /* ===== Stats ===== */
        .stats-section {
            background: #E3F2FD;
            padding: 3.5rem 0;
        }
        .stat-item {
            text-align: center;
            padding: 1rem 0.5rem;
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }
        .stat-label {
            color: var(--text-body);
            font-size: 1rem;
            font-weight: 500;
            margin-top: 0.3rem;
        }
        @media (max-width: 576px) {
            .stat-number {
                font-size: 2rem;
            }
        }

        /* ===== Steps / Process ===== */
        .step-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem 1.5rem;
            justify-content: center;
            counter-reset: step;
        }
        .step-item {
            flex: 1 1 180px;
            max-width: 220px;
            text-align: center;
            position: relative;
            padding-top: 0.5rem;
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            display: block;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            border-radius: 50%;
            margin: 0 auto 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(30, 136, 229, 0.25);
        }
        .step-item .step-title {
            font-weight: 600;
            color: var(--text-h3);
            font-size: 1.05rem;
            margin-bottom: 0.4rem;
        }
        .step-item .step-desc {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.5;
        }
        .step-item:not(:last-child)::after {
            content: '\f178';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: -1.2rem;
            top: 1.2rem;
            color: var(--primary-light);
            font-size: 1.2rem;
            opacity: 0.5;
        }
        @media (max-width: 768px) {
            .step-wrapper {
                flex-direction: column;
                align-items: center;
                gap: 1.5rem;
            }
            .step-item {
                max-width: 320px;
                flex: 1 1 100%;
            }
            .step-item:not(:last-child)::after {
                content: '\f107';
                right: auto;
                top: auto;
                bottom: -1.3rem;
                left: 50%;
                transform: translateX(-50%);
                opacity: 0.4;
            }
        }

        /* ===== FAQ Accordion ===== */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: 0 2px 12px rgba(30, 136, 229, 0.05);
            margin-bottom: 1rem;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            color: var(--text-h3);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            font-size: 1.05rem;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition-base);
        }
        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: transform 0.3s;
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-question:hover {
            background: rgba(30, 136, 229, 0.03);
        }
        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1A237E 0%, #1E88E5 100%);
            padding: 3.5rem 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 2rem;
            font-size: 1.05rem;
        }
        .cta-section .btn-cta {
            background: var(--accent);
            border: none;
            color: #fff;
            border-radius: 30px;
            padding: 0.8rem 3rem;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition-base);
            box-shadow: 0 4px 20px rgba(255, 179, 0, 0.35);
            display: inline-block;
        }
        .cta-section .btn-cta:hover {
            background: var(--accent-dark);
            transform: scale(1.03);
            box-shadow: 0 6px 28px rgba(255, 179, 0, 0.45);
            color: #fff;
        }

        /* ===== Scenarios ===== */
        .scenario-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 1.8rem 1.5rem;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            height: 100%;
            border: 1px solid rgba(30, 136, 229, 0.06);
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .scenario-card .scenario-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .scenario-card h4 {
            margin-bottom: 0.5rem;
        }
        .scenario-card p {
            font-size: 0.95rem;
            margin-bottom: 0;
        }

        /* ===== Footer ===== */
        .footer {
            background: #263238;
            color: rgba(255, 255, 255, 0.8);
            padding: 3.5rem 0 1.5rem;
            font-size: 0.95rem;
        }
        .footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.75rem;
        }
        .footer .footer-brand i {
            color: var(--accent);
        }
        .footer .footer-desc {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            line-height: 1.6;
            max-width: 320px;
        }
        .footer h5 {
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            margin-bottom: 1rem;
        }
        .footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition-base);
        }
        .footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer .social-links a {
            display: inline-flex;
            width: 36px;
            height: 36px;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            color: rgba(255, 255, 255, 0.7);
            margin-right: 0.5rem;
            transition: var(--transition-base);
            font-size: 1rem;
        }
        .footer .social-links a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            margin-top: 2rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.85rem;
        }
        @media (max-width: 576px) {
            .footer .footer-brand {
                justify-content: center;
            }
            .footer .footer-desc {
                max-width: 100%;
                text-align: center;
            }
            .footer .social-links {
                text-align: center;
            }
            .footer h5 {
                text-align: center;
                margin-top: 1.5rem;
            }
            .footer .footer-links {
                text-align: center;
            }
        }

        /* ===== Utility ===== */
        .bg-accent-light {
            background: rgba(255, 179, 0, 0.06);
        }
        .text-accent {
            color: var(--accent);
        }
        .gap-1 {
            gap: 0.5rem;
        }
        .gap-2 {
            gap: 1rem;
        }
        @media (max-width: 576px) {
            .row-cols-2>div {
                flex: 0 0 100%;
                max-width: 100%;
            }
        }
        .btn-outline-primary-custom {
            border: 2px solid var(--primary);
            color: var(--primary);
            border-radius: 30px;
            padding: 0.6rem 2rem;
            font-weight: 600;
            transition: var(--transition-base);
            background: transparent;
            display: inline-block;
        }
        .btn-outline-primary-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .badge-custom {
            display: inline-block;
            background: rgba(30, 136, 229, 0.1);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.25rem 1rem;
            border-radius: 30px;
        }

/* roulang page: article */
:root {
    --primary: #1E88E5;
    --primary-dark: #0D47A1;
    --primary-deeper: #1A237E;
    --accent: #FFB300;
    --accent-hover: #FFA000;
    --bg-body: #F8FAFC;
    --bg-card: #FFFFFF;
    --text-heading: #0D47A1;
    --text-h2: #1A237E;
    --text-h3: #37474F;
    --text-body: #546E7A;
    --text-muted: #90A4AE;
    --border-light: #CFD8DC;
    --radius-card: 12px;
    --radius-btn: 30px;
    --shadow-card: 0 4px 24px rgba(30,136,229,0.08);
    --shadow-card-hover: 0 8px 32px rgba(30,136,229,0.15);
    --font-stack: 'PingFang SC','Microsoft YaHei','Hiragino Sans GB','Noto Sans SC',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-stack);background:var(--bg-body);color:var(--text-body);line-height:1.7;font-size:1rem;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:color 0.3s}
a:hover{color:var(--primary-dark)}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;padding-left:1rem;padding-right:1rem;margin:0 auto}
.py-5{padding-top:3rem;padding-bottom:3rem}
.py-6{padding-top:4rem;padding-bottom:4rem}
.mt-4{margin-top:1.5rem}
.mb-4{margin-bottom:1.5rem}
.mb-5{margin-bottom:3rem}
/* Nav胶囊 */
.navbar-capsule{background:rgba(255,255,255,0.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:50px;box-shadow:0 4px 20px rgba(0,0,0,0.06);padding:0.5rem 1.5rem;margin:1rem auto;max-width:1140px;width:calc(100% - 2rem);transition:all 0.3s}
.navbar-capsule .navbar-brand{font-weight:700;font-size:1.35rem;color:var(--primary-dark);display:flex;align-items:center;gap:0.5rem;letter-spacing:-0.02em}
.navbar-capsule .navbar-brand i{color:var(--accent);font-size:1.5rem}
.navbar-capsule .nav-item .nav-link{border-radius:30px;padding:0.4rem 1rem;font-weight:500;color:var(--text-h3);transition:all 0.3s;font-size:0.95rem}
.navbar-capsule .nav-item .nav-link:hover{background:rgba(30,136,229,0.1);color:var(--primary)}
.navbar-capsule .nav-item .nav-link.active{background:var(--primary);color:#fff;box-shadow:0 2px 12px rgba(30,136,229,0.25)}
.navbar-capsule .navbar-toggler{border:none;color:var(--primary-dark);font-size:1.4rem;padding:0.25rem 0.5rem}
.navbar-capsule .navbar-toggler:focus{box-shadow:none}
/* Breadcrumb */
.breadcrumb-wrap{background:transparent;padding:1rem 0 0.5rem}
.breadcrumb-wrap .breadcrumb{background:transparent;margin:0;font-size:0.9rem;color:var(--text-muted)}
.breadcrumb-wrap .breadcrumb-item a{color:var(--primary)}
.breadcrumb-wrap .breadcrumb-item.active{color:var(--text-muted)}
/* Article Header */
.article-header{text-align:center;padding:2rem 0 1.5rem}
.article-header h1{font-size:2.2rem;font-weight:800;color:var(--text-heading);letter-spacing:-0.02em;line-height:1.3;margin-bottom:1rem}
.article-meta{display:flex;justify-content:center;flex-wrap:wrap;gap:1rem 2rem;font-size:0.95rem;color:var(--text-muted)}
.article-meta .badge-cat{background:rgba(30,136,229,0.12);color:var(--primary);padding:0.25rem 0.9rem;border-radius:30px;font-weight:500;font-size:0.85rem}
.article-meta time{color:var(--text-muted)}
/* Article Body */
.article-body{max-width:800px;margin:0 auto;padding:1.5rem 0 3rem}
.article-body p{line-height:1.8;margin-bottom:1.5rem;font-size:1.05rem;color:var(--text-body)}
.article-body h2{font-size:1.6rem;font-weight:700;color:var(--text-h2);margin:2rem 0 1rem;padding-bottom:0.5rem;border-bottom:2px solid rgba(30,136,229,0.15)}
.article-body h3{font-size:1.25rem;font-weight:600;color:var(--text-h3);margin:1.5rem 0 0.8rem}
.article-body ul,.article-body ol{padding-left:1.5rem;margin-bottom:1.5rem;line-height:1.8}
.article-body li{margin-bottom:0.4rem}
.article-body blockquote{border-left:4px solid var(--primary);background:rgba(30,136,229,0.06);padding:1rem 1.5rem;margin:1.5rem 0;border-radius:0 8px 8px 0;color:var(--text-h3);font-style:normal}
.article-body img{border-radius:12px;margin:1.5rem auto;box-shadow:0 4px 20px rgba(0,0,0,0.06)}
.article-body a{color:var(--primary);font-weight:500;text-decoration:underline;text-underline-offset:2px}
.article-body a:hover{color:var(--accent-hover)}
/* Related */
.related-section{background:var(--bg-body);border-top:1px solid rgba(30,136,229,0.08);padding:3rem 0}
.related-section h2{font-size:1.8rem;font-weight:700;color:var(--text-h2);text-align:center;margin-bottom:2rem;letter-spacing:-0.02em}
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.related-card{background:var(--bg-card);border:none;border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;transition:box-shadow 0.3s,transform 0.2s;display:flex;flex-direction:column}
.related-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-3px)}
.related-card .card-img{height:180px;background:linear-gradient(135deg,#E3F2FD,#BBDEFB);display:flex;align-items:center;justify-content:center;overflow:hidden}
.related-card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s}
.related-card:hover .card-img img{transform:scale(1.05)}
.related-card .card-body{padding:1.25rem 1.5rem 1.5rem;flex:1;display:flex;flex-direction:column}
.related-card .card-body h5{font-size:1.1rem;font-weight:700;color:var(--text-h3);margin-bottom:0.5rem;line-height:1.4}
.related-card .card-body p{font-size:0.92rem;color:var(--text-body);line-height:1.6;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .card-body .btn-link{color:var(--primary);font-weight:600;font-size:0.9rem;padding:0;text-decoration:none;align-self:flex-start;transition:color 0.3s}
.related-card .card-body .btn-link:hover{color:var(--accent-hover)}
/* Back button */
.back-cta{text-align:center;padding:2rem 0 3rem}
.back-cta .btn-back{background:transparent;border:2px solid var(--primary);color:var(--primary);border-radius:var(--radius-btn);padding:0.6rem 2rem;font-weight:600;transition:all 0.3s}
.back-cta .btn-back:hover{background:var(--primary);color:#fff;transform:scale(1.03);box-shadow:0 4px 15px rgba(30,136,229,0.25)}
/* Empty state */
.empty-article{text-align:center;padding:4rem 1rem}
.empty-article i{font-size:3rem;color:var(--text-muted);margin-bottom:1rem}
.empty-article h3{color:var(--text-h3);margin-bottom:0.5rem}
.empty-article p{color:var(--text-muted);margin-bottom:1.5rem}
.empty-article .btn-home{background:var(--primary);color:#fff;border-radius:var(--radius-btn);padding:0.6rem 2rem;font-weight:600;transition:all 0.3s;display:inline-block;border:none}
.empty-article .btn-home:hover{background:var(--primary-dark);transform:scale(1.03)}
/* Footer */
.footer{background:#263238;color:rgba(255,255,255,0.85);padding:3.5rem 0 0;margin-top:0}
.footer .footer-brand{font-size:1.5rem;font-weight:700;color:#fff;display:flex;align-items:center;gap:0.6rem;margin-bottom:0.75rem}
.footer .footer-brand i{color:var(--accent);font-size:1.6rem}
.footer .footer-desc{font-size:0.92rem;line-height:1.7;color:rgba(255,255,255,0.7);max-width:320px}
.footer .social-links{display:flex;gap:0.75rem}
.footer .social-links a{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,0.1);color:rgba(255,255,255,0.8);font-size:1.1rem;transition:all 0.3s}
.footer .social-links a:hover{background:var(--accent);color:#263238}
.footer h5{font-size:1.05rem;font-weight:600;color:#fff;margin-bottom:1rem;position:relative;padding-bottom:0.5rem}
.footer h5::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:var(--accent);border-radius:2px}
.footer .footer-links{list-style:none;padding:0;margin:0}
.footer .footer-links li{margin-bottom:0.5rem;font-size:0.92rem}
.footer .footer-links a{color:rgba(255,255,255,0.7);transition:color 0.3s;text-decoration:none}
.footer .footer-links a:hover{color:var(--accent)}
.footer .footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding:1.5rem 0;margin-top:2.5rem;text-align:center;font-size:0.88rem;color:rgba(255,255,255,0.5)}
@media(max-width:768px){
    .navbar-capsule{border-radius:24px;margin:0.75rem;width:auto}
    .article-header h1{font-size:1.6rem}
    .article-body{max-width:100%}
    .article-body p{font-size:1rem}
    .related-grid{grid-template-columns:1fr}
    .footer .footer-brand{font-size:1.3rem}
    .article-meta{gap:0.75rem 1.2rem;font-size:0.88rem}
}
@media(max-width:576px){
    .navbar-capsule{border-radius:18px;margin:0.5rem;padding:0.4rem 1rem}
    .navbar-capsule .navbar-brand{font-size:1.15rem}
    .navbar-capsule .navbar-brand i{font-size:1.2rem}
    .article-header h1{font-size:1.35rem}
    .article-body{padding:1rem 0 2rem}
    .article-body h2{font-size:1.3rem}
    .related-card .card-img{height:140px}
    .back-cta .btn-back{padding:0.5rem 1.5rem;font-size:0.92rem}
    .footer{padding:2.5rem 0 0}
    .footer .footer-bottom{font-size:0.82rem}
}

/* roulang page: category2 */
/* ============================================
               :root 设计变量
            ============================================ */
        :root {
            --primary: #1E88E5;
            --primary-dark: #0D47A1;
            --primary-light: #42A5F5;
            --accent: #FFB300;
            --accent-hover: #FFA000;
            --bg: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-light-blue: #E3F2FD;
            --text-heading: #0D47A1;
            --text-h2: #1A237E;
            --text-h3: #37474F;
            --text-body: #546E7A;
            --text-muted: #90A4AE;
            --border-color: #E0E7EF;
            --shadow-sm: 0 4px 24px rgba(30, 136, 229, 0.08);
            --shadow-hover: 0 8px 32px rgba(30, 136, 229, 0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 50px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', sans-serif;
            --transition: 0.3s ease;
            --header-z: 1050;
        }

        /* ============================================
               基础 Reset / Base
            ============================================ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text-body);
            line-height: 1.7;
            padding-top: 0;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
        }

        ul,
        ol {
            padding-left: 1.25rem;
        }

        /* ============================================
               容器 / 间距
            ============================================ */
        .container {
            max-width: 1200px;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        .py-5 {
            padding-top: 3rem !important;
            padding-bottom: 3rem !important;
        }
        .py-6 {
            padding-top: 4.5rem !important;
            padding-bottom: 4.5rem !important;
        }

        @media (min-width: 768px) {
            .py-5 {
                padding-top: 4rem !important;
                padding-bottom: 4rem !important;
            }
            .py-6 {
                padding-top: 5.5rem !important;
                padding-bottom: 5.5rem !important;
            }
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-h2);
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 576px) {
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
        }

        /* ============================================
               导航胶囊（全局）
            ============================================ */
        header {
            position: sticky;
            top: 0;
            z-index: var(--header-z);
            padding: 0.75rem 1rem;
            pointer-events: none;
        }

        .navbar-capsule {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-xl);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            padding: 0.4rem 1.5rem;
            max-width: 1140px;
            margin: 0 auto;
            pointer-events: auto;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .navbar-capsule .navbar-brand {
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            gap: 0.4rem;
            letter-spacing: -0.02em;
        }
        .navbar-capsule .navbar-brand i {
            color: var(--accent);
            font-size: 1.4rem;
        }
        .navbar-capsule .navbar-brand:hover {
            color: var(--primary-dark);
        }

        .navbar-capsule .navbar-nav .nav-item .nav-link {
            border-radius: 30px;
            padding: 0.4rem 1.1rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition);
            font-size: 0.95rem;
        }
        .navbar-capsule .navbar-nav .nav-item .nav-link:hover {
            background: rgba(30, 136, 229, 0.1);
            color: var(--primary);
        }
        .navbar-capsule .navbar-nav .nav-item .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .navbar-capsule .navbar-toggler {
            border: none;
            background: transparent;
            color: var(--primary-dark);
            font-size: 1.3rem;
            padding: 0.25rem 0.5rem;
        }
        .navbar-capsule .navbar-toggler:focus {
            box-shadow: none;
        }

        @media (max-width: 767.98px) {
            header {
                padding: 0.5rem 0.75rem;
            }
            .navbar-capsule {
                padding: 0.4rem 1rem;
                border-radius: var(--radius-lg);
            }
            .navbar-capsule .navbar-brand {
                font-size: 1.1rem;
            }
            .navbar-capsule .navbar-nav .nav-item .nav-link {
                padding: 0.5rem 1rem;
                text-align: center;
            }
            .navbar-capsule .navbar-collapse {
                background: rgba(255, 255, 255, 0.95);
                backdrop-filter: blur(8px);
                border-radius: var(--radius-md);
                padding: 0.5rem 0;
                margin-top: 0.5rem;
            }
        }

        @media (max-width: 576px) {
            .navbar-capsule .navbar-brand {
                font-size: 1rem;
            }
            .navbar-capsule .navbar-brand i {
                font-size: 1.1rem;
            }
        }

        /* ============================================
               Hero 区块
            ============================================ */
        .hero-security {
            position: relative;
            min-height: 60vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, #0D47A1 0%, #1E88E5 40%, #42A5F5 100%);
            padding: 6rem 0 4rem;
            overflow: hidden;
        }
        .hero-security::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .hero-security .hero-overlay {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .hero-security h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            margin-bottom: 1rem;
        }
        .hero-security .lead {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.88);
            max-width: 680px;
            margin: 0 auto 2rem;
            line-height: 1.7;
        }
        .hero-security .btn-group-hero .btn {
            margin: 0.4rem 0.5rem;
            border-radius: 30px;
            padding: 0.7rem 2.2rem;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
        }
        .hero-security .btn-primary {
            background: var(--accent);
            border: none;
            color: #fff;
        }
        .hero-security .btn-primary:hover {
            background: var(--accent-hover);
            transform: scale(1.03);
            box-shadow: 0 4px 20px rgba(255, 179, 0, 0.4);
        }
        .hero-security .btn-outline-light {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.7);
            color: #fff;
        }
        .hero-security .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            transform: scale(1.03);
        }

        @media (max-width: 768px) {
            .hero-security {
                min-height: 50vh;
                padding: 5rem 0 3rem;
            }
            .hero-security h1 {
                font-size: 2rem;
            }
            .hero-security .lead {
                font-size: 1rem;
            }
            .hero-security .btn-group-hero .btn {
                padding: 0.6rem 1.6rem;
                font-size: 0.9rem;
            }
        }
        @media (max-width: 576px) {
            .hero-security h1 {
                font-size: 1.6rem;
            }
            .hero-security .lead {
                font-size: 0.9rem;
            }
            .hero-security .btn-group-hero .btn {
                display: block;
                width: 80%;
                margin: 0.5rem auto;
            }
        }

        /* ============================================
               卡片通用
            ============================================ */
        .card-custom {
            background: var(--bg-card);
            border: none;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform 0.2s;
            overflow: hidden;
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .card-custom .card-body {
            padding: 1.5rem;
        }
        .card-custom .card-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 0.75rem;
        }
        .card-custom .card-title {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-h3);
            margin-bottom: 0.5rem;
        }
        .card-custom .card-text {
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .card-custom .badge-tag {
            display: inline-block;
            background: var(--bg-light-blue);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            margin-top: 0.75rem;
        }

        @media (max-width: 576px) {
            .card-custom .card-body {
                padding: 1.2rem;
            }
            .card-custom .card-icon {
                font-size: 1.8rem;
            }
            .card-custom .card-title {
                font-size: 1.05rem;
            }
        }

        /* ============================================
               数据/统计数字
            ============================================ */
        .stats-section {
            background: var(--bg-light-blue);
        }
        .stat-item {
            text-align: center;
            padding: 1.5rem 0.5rem;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-number .unit {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--primary);
        }
        .stat-label {
            font-size: 1rem;
            color: var(--text-body);
            margin-top: 0.3rem;
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .stat-number {
                font-size: 2.4rem;
            }
            .stat-number .unit {
                font-size: 1.2rem;
            }
        }
        @media (max-width: 576px) {
            .stat-number {
                font-size: 2rem;
            }
            .stat-label {
                font-size: 0.85rem;
            }
        }

        /* ============================================
               步骤条 / 流程图
            ============================================ */
        .step-flow {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
            counter-reset: step;
        }
        .step-item {
            flex: 1 1 200px;
            max-width: 240px;
            text-align: center;
            position: relative;
            counter-increment: step;
        }
        .step-item::before {
            content: "";
            position: absolute;
            top: 28px;
            right: -18px;
            width: 36px;
            height: 2px;
            background: var(--primary);
            opacity: 0.3;
        }
        .step-item:last-child::before {
            display: none;
        }
        .step-circle {
            width: 56px;
            height: 56px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 700;
            margin: 0 auto 1rem;
            box-shadow: 0 4px 16px rgba(30, 136, 229, 0.25);
            transition: transform 0.2s;
        }
        .step-item:hover .step-circle {
            transform: scale(1.08);
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-h3);
            margin-bottom: 0.4rem;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .step-flow {
                gap: 2rem;
            }
            .step-item {
                flex: 0 0 100%;
                max-width: 100%;
            }
            .step-item::before {
                display: none;
            }
            .step-circle {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
        }

        /* ============================================
               FAQ 手风琴
            ============================================ */
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            padding: 1.1rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-h3);
            font-size: 1rem;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: background 0.2s;
        }
        .faq-question:hover {
            background: rgba(30, 136, 229, 0.03);
        }
        .faq-question i {
            color: var(--primary);
            margin-right: 0.75rem;
            font-size: 1.1rem;
        }
        .faq-question .fa-chevron-down {
            color: var(--text-muted);
            transition: transform var(--transition);
            font-size: 0.85rem;
        }
        .faq-item.active .faq-question .fa-chevron-down {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 1.5rem;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 1.5rem 1.2rem;
        }

        @media (max-width: 576px) {
            .faq-question {
                font-size: 0.92rem;
                padding: 0.9rem 1rem;
            }
            .faq-answer {
                font-size: 0.88rem;
                padding: 0 1rem;
            }
            .faq-item.active .faq-answer {
                padding: 0 1rem 1rem;
            }
        }

        /* ============================================
               CTA 区块
            ============================================ */
        .cta-section {
            background: linear-gradient(135deg, #1A237E 0%, #1E88E5 100%);
            padding: 4rem 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 2rem;
        }
        .cta-section .btn {
            background: var(--accent);
            border: none;
            color: #fff;
            border-radius: 30px;
            padding: 0.8rem 2.5rem;
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition);
        }
        .cta-section .btn:hover {
            background: var(--accent-hover);
            transform: scale(1.03);
            box-shadow: 0 4px 20px rgba(255, 179, 0, 0.4);
        }

        @media (max-width: 576px) {
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn {
                padding: 0.6rem 1.8rem;
                font-size: 0.95rem;
            }
        }

        /* ============================================
               场景卡片网格
            ============================================ */
        .scene-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 1.5rem;
            height: 100%;
            transition: box-shadow var(--transition), transform 0.2s;
            border-left: 4px solid var(--primary);
        }
        .scene-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .scene-card .scene-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 0.6rem;
        }
        .scene-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-h3);
            margin-bottom: 0.4rem;
        }
        .scene-card p {
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 0;
        }

        @media (max-width: 576px) {
            .scene-card {
                padding: 1.2rem;
            }
            .scene-card .scene-icon {
                font-size: 1.6rem;
            }
            .scene-card h4 {
                font-size: 1rem;
            }
        }

        /* ============================================
               按钮、标签、徽章通用
            ============================================ */
        .btn-main {
            background: var(--accent);
            border: none;
            color: #fff;
            border-radius: 30px;
            padding: 0.7rem 2rem;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            display: inline-block;
        }
        .btn-main:hover {
            background: var(--accent-hover);
            transform: scale(1.03);
            box-shadow: 0 4px 15px rgba(255, 179, 0, 0.4);
            color: #fff;
        }
        .btn-outline-main {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            border-radius: 30px;
            padding: 0.7rem 2rem;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            display: inline-block;
        }
        .btn-outline-main:hover {
            background: var(--primary);
            color: #fff;
            transform: scale(1.03);
        }

        .badge-primary {
            background: var(--bg-light-blue);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.75rem;
            padding: 0.3rem 0.9rem;
            border-radius: 20px;
        }

        /* ============================================
               表单样式
            ============================================ */
        .form-control-custom {
            border-radius: var(--radius-sm);
            border: 1.5px solid var(--border-color);
            padding: 0.65rem 1rem;
            font-size: 0.95rem;
            color: var(--text-body);
            background: var(--bg-card);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .form-control-custom:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.12);
            outline: none;
        }
        .form-control-custom::placeholder {
            color: var(--text-muted);
        }
        textarea.form-control-custom {
            min-height: 100px;
            resize: vertical;
        }

        /* ============================================
               页脚（全局）
            ============================================ */
        .footer {
            background: #263238;
            color: rgba(255, 255, 255, 0.85);
            padding: 3.5rem 0 1.5rem;
        }
        .footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            margin-bottom: 0.75rem;
        }
        .footer .footer-brand i {
            color: var(--accent);
        }
        .footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.6;
            max-width: 320px;
        }
        .footer .social-links a {
            display: inline-block;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            text-align: center;
            line-height: 36px;
            margin-right: 0.5rem;
            transition: background var(--transition), color var(--transition);
            font-size: 1rem;
        }
        .footer .social-links a:hover {
            background: var(--primary);
            color: #fff;
        }
        .footer h5 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }
        .footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer .footer-links li {
            margin-bottom: 0.4rem;
        }
        .footer .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .footer .footer-links a:hover {
            color: var(--primary-light);
            text-decoration: none;
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            margin-top: 2.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }

        @media (max-width: 768px) {
            .footer .footer-brand {
                font-size: 1.1rem;
            }
            .footer .footer-desc {
                max-width: 100%;
            }
            .footer .social-links {
                margin-bottom: 1.5rem;
            }
            .footer h5 {
                margin-top: 1rem;
            }
        }
        @media (max-width: 576px) {
            .footer {
                padding: 2.5rem 0 1rem;
            }
            .footer .footer-bottom {
                font-size: 0.78rem;
            }
        }

        /* ============================================
               分隔线 / 装饰
            ============================================ */
        .divider-accent {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 0.75rem auto 1.25rem;
        }
        .divider-accent-left {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 0.75rem 0 1.25rem;
        }

        /* ============================================
               响应式补丁
            ============================================ */
        @media (max-width: 576px) {
            .row-cols-2>* {
                flex: 0 0 100%;
                max-width: 100%;
            }
        }

        /* ============================================
               空状态占位
            ============================================ */
        .empty-state {
            text-align: center;
            padding: 2rem 1rem;
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        .empty-state i {
            font-size: 2.5rem;
            margin-bottom: 0.75rem;
            opacity: 0.5;
        }

/* roulang page: category3 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1E88E5;
            --primary-dark: #0D47A1;
            --primary-light: #42A5F5;
            --accent: #FFB300;
            --accent-hover: #FFA000;
            --bg-body: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-dark: #263238;
            --text-dark: #0D47A1;
            --text-heading: #1A237E;
            --text-body: #37474F;
            --text-muted: #546E7A;
            --text-weak: #90A4AE;
            --border-color: #CFD8DC;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 50px;
            --shadow-card: 0 4px 24px rgba(30, 136, 229, 0.08);
            --shadow-card-hover: 0 8px 32px rgba(30, 136, 229, 0.15);
            --shadow-nav: 0 4px 20px rgba(0, 0, 0, 0.06);
            --transition: 0.3s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-stack);
            background-color: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-stack);
            letter-spacing: -0.02em;
            line-height: 1.3;
        }
        p {
            margin-bottom: 1rem;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* ===== Navigation Capsule ===== */
        .navbar-capsule {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-nav);
            padding: 0.5rem 1.5rem;
            margin: 1rem auto;
            max-width: 1200px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: background var(--transition);
        }
        .navbar-capsule .navbar-brand {
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            letter-spacing: -0.02em;
            padding: 0.3rem 0;
        }
        .navbar-capsule .navbar-brand i {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .navbar-capsule .navbar-brand:hover {
            color: var(--primary);
        }
        .navbar-capsule .nav-item {
            margin: 0 0.1rem;
        }
        .navbar-capsule .nav-link {
            border-radius: 30px;
            padding: 0.4rem 1.2rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition);
            font-size: 0.95rem;
        }
        .navbar-capsule .nav-link:hover {
            background: rgba(30, 136, 229, 0.1);
            color: var(--primary);
        }
        .navbar-capsule .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(30, 136, 229, 0.25);
        }
        .navbar-capsule .navbar-toggler {
            border: none;
            color: var(--text-body);
            font-size: 1.4rem;
            padding: 0.25rem 0.5rem;
            background: transparent;
        }
        .navbar-capsule .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 8px;
        }
        .navbar-capsule .navbar-toggler:hover {
            color: var(--primary);
        }
        @media (max-width: 767.98px) {
            .navbar-capsule {
                margin: 0.75rem;
                border-radius: 30px;
                padding: 0.4rem 1rem;
            }
            .navbar-capsule .navbar-collapse {
                background: rgba(255, 255, 255, 0.98);
                border-radius: 24px;
                padding: 1rem 0.5rem;
                margin-top: 0.5rem;
                box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            }
            .navbar-capsule .nav-link {
                padding: 0.6rem 1rem;
                text-align: center;
            }
        }

        /* ===== Hero ===== */
        .hero-cat {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #1E88E5 0%, #42A5F5 100%);
            background-size: cover;
            background-position: center;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            overflow: hidden;
            margin-top: -1rem;
            padding: 4rem 0;
        }
        .hero-cat .hero-bg-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-cat .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 71, 161, 0.6) 0%, rgba(30, 136, 229, 0.4) 100%);
            z-index: 1;
        }
        .hero-cat .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            max-width: 800px;
            padding: 0 1.5rem;
        }
        .hero-cat h1 {
            font-size: 2.8rem;
            font-weight: 700;
            color: #fff;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }
        .hero-cat .hero-sub {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.6;
            max-width: 680px;
            margin: 0 auto 2rem;
            text-shadow: 0 1px 8px rgba(0, 0, 0, 0.1);
        }
        .hero-cat .btn-hero-primary {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0.8rem 2.5rem;
            font-weight: 600;
            transition: all var(--transition);
            box-shadow: 0 4px 15px rgba(255, 179, 0, 0.35);
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .hero-cat .btn-hero-primary:hover {
            background: var(--accent-hover);
            transform: scale(1.03);
            box-shadow: 0 6px 25px rgba(255, 179, 0, 0.45);
            color: #fff;
        }
        .hero-cat .btn-hero-secondary {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.7);
            border-radius: 30px;
            padding: 0.8rem 2.2rem;
            font-weight: 500;
            transition: all var(--transition);
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            margin-left: 0.75rem;
        }
        .hero-cat .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
            transform: scale(1.03);
        }
        @media (max-width: 767.98px) {
            .hero-cat {
                min-height: 380px;
                padding: 3rem 0;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .hero-cat h1 {
                font-size: 1.9rem;
            }
            .hero-cat .hero-sub {
                font-size: 1rem;
            }
            .hero-cat .btn-hero-primary,
            .hero-cat .btn-hero-secondary {
                padding: 0.6rem 1.6rem;
                font-size: 0.9rem;
            }
            .hero-cat .btn-hero-secondary {
                margin-left: 0;
                margin-top: 0.5rem;
            }
        }
        @media (max-width: 575.98px) {
            .hero-cat h1 {
                font-size: 1.6rem;
            }
            .hero-cat .hero-sub {
                font-size: 0.95rem;
            }
            .hero-cat .btn-hero-primary,
            .hero-cat .btn-hero-secondary {
                width: 100%;
                justify-content: center;
            }
            .hero-cat .btn-hero-secondary {
                margin-left: 0;
                margin-top: 0.6rem;
            }
        }

        /* ===== Section Spacing ===== */
        .section-padding {
            padding: 4.5rem 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 650px;
            margin: 0 auto 2.5rem;
            line-height: 1.6;
        }
        @media (max-width: 767.98px) {
            .section-padding {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 1.8rem;
            }
        }

        /* ===== Cards ===== */
        .card-modern {
            background: var(--bg-card);
            border: none;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform 0.25s ease;
            overflow: hidden;
            height: 100%;
        }
        .card-modern:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .card-modern .card-img-top {
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            object-fit: cover;
            height: 200px;
            width: 100%;
        }
        .card-modern .card-body {
            padding: 1.5rem;
        }
        .card-modern .card-title {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 0.5rem;
        }
        .card-modern .card-text {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .card-modern .card-tag {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(30, 136, 229, 0.1);
            color: var(--primary);
            margin-bottom: 0.75rem;
        }

        /* ===== Stats / Data Block ===== */
        .stats-section {
            background: #E3F2FD;
            border-radius: var(--radius-lg);
            padding: 3.5rem 0;
        }
        .stat-item {
            text-align: center;
            padding: 1rem 0.5rem;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            display: block;
        }
        .stat-label {
            font-size: 1rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
            font-weight: 500;
        }
        @media (max-width: 767.98px) {
            .stat-number {
                font-size: 2.2rem;
            }
            .stat-label {
                font-size: 0.9rem;
            }
            .stats-section {
                padding: 2.5rem 0;
            }
        }

        /* ===== Steps / Process ===== */
        .step-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
            position: relative;
        }
        .step-item {
            flex: 1 1 200px;
            min-width: 160px;
            max-width: 240px;
            text-align: center;
            position: relative;
            padding: 1.5rem 1rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .step-number {
            width: 56px;
            height: 56px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.4rem;
            margin: 0 auto 1rem;
            box-shadow: 0 4px 14px rgba(30, 136, 229, 0.25);
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 0.4rem;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.5;
        }
        .step-connector {
            display: none;
        }
        @media (min-width: 768px) {
            .step-wrapper {
                gap: 0.5rem;
                justify-content: space-between;
            }
            .step-item {
                flex: 1 1 180px;
                max-width: 220px;
            }
            .step-wrapper .step-item:not(:last-child)::after {
                content: '\f054';
                font-family: 'Font Awesome 6 Free';
                font-weight: 900;
                position: absolute;
                right: -18px;
                top: 50%;
                transform: translateY(-50%);
                color: var(--primary-light);
                font-size: 1rem;
                opacity: 0.5;
                pointer-events: none;
            }
        }
        @media (max-width: 767.98px) {
            .step-item {
                flex: 1 1 100%;
                max-width: 100%;
                display: flex;
                align-items: center;
                gap: 1rem;
                text-align: left;
                padding: 1rem 1.2rem;
            }
            .step-number {
                margin: 0;
                flex-shrink: 0;
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
            .step-item h4 {
                margin-bottom: 0.2rem;
            }
            .step-item p {
                font-size: 0.85rem;
            }
        }

        /* ===== FAQ Accordion ===== */
        .faq-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            margin-bottom: 1rem;
            border: none;
            overflow: hidden;
        }
        .faq-card .faq-header {
            padding: 1.2rem 1.5rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            color: var(--text-heading);
            font-size: 1.05rem;
            transition: background var(--transition);
            border: none;
            background: transparent;
            width: 100%;
            text-align: left;
        }
        .faq-card .faq-header:hover {
            background: rgba(30, 136, 229, 0.04);
        }
        .faq-card .faq-header i {
            color: var(--primary);
            margin-right: 0.75rem;
            font-size: 1.1rem;
        }
        .faq-card .faq-header .faq-toggle {
            color: var(--text-weak);
            transition: transform var(--transition);
        }
        .faq-card .faq-header[aria-expanded="true"] .faq-toggle {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-card .faq-body {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-muted);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            border-radius: var(--radius-lg);
            padding: 3.5rem 2.5rem;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 1.8rem;
        }
        .cta-section .btn-cta {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0.8rem 2.8rem;
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(255, 179, 0, 0.35);
        }
        .cta-section .btn-cta:hover {
            background: var(--accent-hover);
            transform: scale(1.03);
            box-shadow: 0 6px 28px rgba(255, 179, 0, 0.45);
            color: #fff;
        }
        @media (max-width: 767.98px) {
            .cta-section {
                padding: 2.5rem 1.5rem;
                border-radius: var(--radius-md);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-cta {
                padding: 0.65rem 2rem;
                font-size: 0.95rem;
                width: 100%;
            }
        }

        /* ===== Contact Form ===== */
        .contact-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 2rem;
            height: 100%;
        }
        .contact-card .form-control {
            border-radius: var(--radius-sm);
            border: 1.5px solid var(--border-color);
            padding: 0.7rem 1rem;
            font-size: 0.95rem;
            transition: border-color var(--transition), box-shadow var(--transition);
            background: var(--bg-body);
        }
        .contact-card .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.12);
            outline: none;
        }
        .contact-card .form-label {
            font-weight: 500;
            color: var(--text-body);
            font-size: 0.95rem;
        }
        .contact-card .btn-submit {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0.7rem 2.5rem;
            font-weight: 600;
            transition: all var(--transition);
            font-size: 1rem;
        }
        .contact-card .btn-submit:hover {
            background: var(--accent-hover);
            transform: scale(1.02);
            box-shadow: 0 4px 18px rgba(255, 179, 0, 0.35);
            color: #fff;
        }
        .contact-info-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .contact-info-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            margin-bottom: 1.2rem;
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        .contact-info-list li i {
            color: var(--accent);
            font-size: 1.2rem;
            min-width: 1.5rem;
            margin-top: 0.2rem;
        }
        .contact-info-list li strong {
            color: var(--text-body);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 3.5rem 0 0;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            margin-top: 3rem;
        }
        .footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.75rem;
        }
        .footer .footer-brand i {
            color: var(--accent);
        }
        .footer .footer-desc {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.95rem;
            line-height: 1.6;
            max-width: 320px;
        }
        .footer h5 {
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            margin-bottom: 1.2rem;
        }
        .footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer .footer-links li {
            margin-bottom: 0.6rem;
        }
        .footer .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
            font-size: 0.9rem;
        }
        .footer .footer-links a:hover {
            color: var(--primary-light);
            text-decoration: none;
        }
        .footer .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            margin-right: 0.5rem;
            transition: all var(--transition);
        }
        .footer .social-links a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.5rem 0;
            margin-top: 2.5rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.85rem;
        }
        @media (max-width: 767.98px) {
            .footer {
                padding: 2.5rem 0 0;
                border-radius: var(--radius-md) var(--radius-md) 0 0;
            }
            .footer .footer-brand {
                font-size: 1.3rem;
            }
            .footer .footer-desc {
                max-width: 100%;
            }
            .footer h5 {
                font-size: 0.95rem;
                margin-bottom: 0.8rem;
            }
        }

        /* ===== Utility ===== */
        .bg-soft-primary {
            background: #E3F2FD;
        }
        .mt-section {
            margin-top: 2rem;
        }
        .mb-section {
            margin-bottom: 2rem;
        }
        .gap-2rem {
            gap: 2rem;
        }

        /* ===== Responsive Grid Tweak ===== */
        @media (max-width: 575.98px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .section-padding {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .card-modern .card-body {
                padding: 1.2rem;
            }
            .card-modern .card-img-top {
                height: 160px;
            }
        }

        /* ===== Empty State Placeholder ===== */
        .empty-state {
            padding: 2rem 1.5rem;
            text-align: center;
            color: var(--text-weak);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
            font-size: 0.95rem;
        }
        .empty-state i {
            font-size: 2rem;
            color: var(--border-color);
            margin-bottom: 0.5rem;
            display: block;
        }

        /* ===== Focus & Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        .nav-link:focus-visible,
        .faq-header:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 8px;
        }

        /* ===== Section Divider ===== */
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 0.5rem auto 1.5rem;
        }
        .section-divider-left {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 0.5rem 0 1.5rem;
        }

        /* ===== Smooth transition for all interactive ===== */
        .btn,
        .nav-link,
        .card-modern,
        .step-item,
        .faq-header,
        .social-links a {
            transition: all var(--transition);
        }

        /* ===== Button outline-light variant ===== */
        .btn-outline-light-custom {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.7);
            border-radius: 30px;
            padding: 0.7rem 2rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
            transform: scale(1.02);
        }