/* roulang page: index */
:root {
            --primary: #00d68f;
            --primary-dark: #00b87a;
            --primary-light: rgba(0, 214, 143, 0.1);
            --accent: #ff7a1a;
            --dark-bg: #0b1220;
            --dark-bg-2: #101a2b;
            --light-bg: #f6f8fb;
            --white: #ffffff;
            --text-main: #1a2332;
            --text-sub: #5b6b7f;
            --text-weak: #8a99ac;
            --border-color: #e7ebf0;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-md: 0 8px 30px rgba(16, 26, 43, 0.08);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
            --section-space: 96px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background-color: #ffffff;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: var(--primary-dark);
        }

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
        }

        .section {
            padding: var(--section-space) 0;
        }

        .section-sm {
            padding: 64px 0;
        }

        .bg-light-custom {
            background-color: var(--light-bg);
        }

        .bg-dark-custom {
            background-color: var(--dark-bg);
            color: #cbd5e1;
        }

        .section-title {
            font-size: 32px;
            font-weight: 650;
            line-height: 1.35;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 48px;
        }

        .text-primary-brand {
            color: var(--primary);
        }

        /* ===== 顶部信息条 ===== */
        .topbar {
            background-color: var(--dark-bg);
            color: #a0b0c3;
            font-size: 13px;
            height: 36px;
            line-height: 36px;
        }

        .topbar a {
            color: #a0b0c3;
            font-size: 13px;
            transition: color 0.2s;
        }

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

        .topbar .topbar-right {
            text-align: right;
        }

        .topbar .topbar-right a {
            margin-left: 16px;
        }

        /* ===== 导航 ===== */
        .navbar-custom {
            background: #ffffff;
            border-bottom: 1px solid var(--border-color);
            padding: 0;
            min-height: 72px;
            position: sticky;
            top: 0;
            z-index: 1030;
        }

        .navbar-custom .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 0;
        }

        .navbar-custom .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #00a870);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
        }

        .navbar-custom .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .navbar-custom .brand-main {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
        }

        .navbar-custom .brand-sub {
            font-size: 12px;
            color: var(--text-sub);
            letter-spacing: 0.3px;
        }

        .navbar-custom .navbar-nav {
            gap: 4px;
            margin-left: 32px;
        }

        .navbar-custom .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            padding: 10px 16px !important;
            border-radius: 8px;
            transition: all 0.2s ease;
        }

        .navbar-custom .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .navbar-custom .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
        }

        .navbar-custom .btn-login-nav {
            margin-left: 16px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 10px;
            height: 44px;
            padding: 0 24px;
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.2s ease;
        }

        .navbar-custom .btn-login-nav:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            color: #fff;
        }

        .navbar-toggler {
            border: 1px solid var(--primary);
            border-radius: 8px;
            padding: 6px 10px;
            background: transparent;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 214, 143, 0.2);
            border-color: var(--primary);
        }

        .navbar-toggler-icon-custom {
            width: 22px;
            height: 2px;
            background: var(--primary);
            position: relative;
            display: block;
            border-radius: 2px;
        }

        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: "";
            position: absolute;
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            left: 0;
            transition: 0.2s;
        }

        .navbar-toggler-icon-custom::before {
            top: -7px;
        }

        .navbar-toggler-icon-custom::after {
            top: 7px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: linear-gradient(0deg, rgba(11, 18, 32, 0.82), rgba(11, 18, 32, 0.55)), url("/assets/images/backpic/back-1.png") center center / cover no-repeat;
            min-height: 560px;
            display: flex;
            align-items: center;
            color: #ffffff;
            padding: 80px 0;
        }

        .hero-content {
            max-width: 820px;
            margin: 0 auto;
            text-align: center;
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.3;
            color: #ffffff;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .hero h1 .highlight {
            color: var(--primary);
        }

        .hero-sub {
            font-size: 18px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 36px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 44px;
        }

        .hero-actions .btn-primary-custom {
            background: var(--primary);
            border: none;
            color: #ffffff;
            border-radius: 10px;
            height: 48px;
            padding: 0 30px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.2s ease;
        }

        .hero-actions .btn-primary-custom:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 214, 143, 0.3);
        }

        .hero-actions .btn-outline-light-custom {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.85);
            color: #ffffff;
            border-radius: 10px;
            height: 48px;
            padding: 0 30px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.2s ease;
        }

        .hero-actions .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--primary);
            color: var(--primary);
        }

        .hero-badges {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .hero-badges span {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.92);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-badges span i {
            color: var(--primary);
        }

        /* ===== 痛点区 ===== */
        .pain-section {
            background: var(--dark-bg);
            color: #cbd5e1;
        }

        .pain-section .section-title {
            color: #ffffff;
        }

        .pain-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            height: 100%;
            transition: border-color 0.3s, background 0.3s;
        }

        .pain-card:hover {
            border-color: rgba(0, 214, 143, 0.35);
            background: rgba(255, 255, 255, 0.06);
        }

        .pain-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(0, 214, 143, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            margin-bottom: 16px;
        }

        .pain-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 8px;
        }

        .pain-card p {
            font-size: 14px;
            color: #8a99ac;
            line-height: 1.6;
            margin-bottom: 12px;
        }

        .pain-impact {
            font-size: 13px;
            color: var(--accent);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== 解决方案区 ===== */
        .solution-section {
            background: #ffffff;
        }

        .solution-img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: box-shadow 0.3s;
        }

        .solution-img-wrap:hover {
            box-shadow: var(--shadow-hover);
        }

        .solution-img-wrap img {
            width: 100%;
            display: block;
        }

        .solution-features {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .solution-features li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 15px;
            color: var(--text-main);
        }

        .solution-features li i {
            color: var(--primary);
            font-size: 16px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ===== 数据区 ===== */
        .stats-section {
            background: linear-gradient(135deg, #0b1220 0%, #101a2b 60%, #0b1522 100%);
            color: #ffffff;
        }

        .stats-section .section-title {
            color: #ffffff;
        }

        .stats-label {
            font-size: 14px;
            color: #8a99ac;
            margin-bottom: 8px;
        }

        .stat-item {
            text-align: center;
            padding: 20px 12px;
        }

        .stat-number {
            font-size: 42px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -1px;
        }

        .stat-number .unit {
            font-size: 20px;
            font-weight: 600;
            margin-left: 2px;
        }

        .stat-name {
            font-size: 14px;
            color: #a0b0c3;
            margin-top: 8px;
        }

        /* ===== 证言区 ===== */
        .testimonial-section {
            background: var(--light-bg);
        }

        .testimonial-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-md);
            transition: box-shadow 0.3s, transform 0.3s;
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .testimonial-stars {
            color: #f59e0b;
            font-size: 14px;
            margin-bottom: 12px;
        }

        .testimonial-text {
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--accent);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
        }

        .testimonial-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
        }

        .testimonial-role {
            font-size: 12px;
            color: var(--text-weak);
        }

        /* ===== 资讯列表 ===== */
        .news-section {
            background: #ffffff;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item {
            display: flex;
            gap: 16px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 16px;
            align-items: center;
            transition: box-shadow 0.3s, border-color 0.3s, transform 0.3s;
        }

        .news-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 214, 143, 0.3);
            transform: translateY(-3px);
        }

        .news-thumb {
            width: 120px;
            height: 90px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--light-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-weak);
            font-size: 24px;
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-body {
            flex: 1;
            min-width: 0;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 6px;
        }

        .news-cat {
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: var(--radius-sm);
        }

        .news-date {
            font-size: 12px;
            color: var(--text-weak);
        }

        .news-body h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 4px;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-body h3 a {
            color: var(--text-main);
        }

        .news-body h3 a:hover {
            color: var(--primary);
        }

        .news-summary {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0;
        }

        .news-link-more {
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
            margin-top: 4px;
            display: inline-block;
        }

        .news-empty {
            background: var(--light-bg);
            border-radius: var(--radius-md);
            padding: 40px;
            text-align: center;
            color: var(--text-weak);
            font-size: 14px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--light-bg);
        }

        .faq-accordion .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border-color);
            background: transparent;
        }

        .faq-accordion .accordion-item:last-child {
            border-bottom: none;
        }

        .faq-accordion .accordion-button {
            background: transparent;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            padding: 18px 20px;
            line-height: 1.5;
            transition: background 0.25s ease;
            border: none;
            box-shadow: none;
        }

        .faq-accordion .accordion-button::after {
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f067";
            color: var(--primary);
            font-size: 14px;
            background: none;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--light-bg);
            color: var(--text-main);
            font-weight: 600;
            border-left: 3px solid var(--primary);
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            content: "\f068";
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 214, 143, 0.15);
            border-color: var(--primary);
        }

        .faq-accordion .accordion-body {
            background: var(--light-bg);
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.75;
            padding: 0 20px 20px 24px;
            border-left: 3px solid var(--primary);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #00b87a 70%, #00a870 100%);
            padding: 72px 0;
            text-align: center;
            color: #ffffff;
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 32px;
            opacity: 0.92;
        }

        .cta-section .btn-cta-custom {
            background: #ffffff;
            color: var(--primary);
            border: none;
            border-radius: 14px;
            height: 56px;
            padding: 0 40px;
            font-size: 17px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all 0.25s ease;
        }

        .cta-section .btn-cta-custom:hover {
            transform: scale(1.03);
            color: var(--primary-dark);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--dark-bg);
            color: #a0b0c3;
            padding: 64px 0 0;
        }

        .footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer .footer-brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
        }

        .footer .footer-brand-text {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
        }

        .footer .footer-brand-sub {
            font-size: 12px;
            color: #8a99ac;
        }

        .footer p {
            font-size: 14px;
            color: #a0b0c3;
            line-height: 1.7;
        }

        .footer h4 {
            font-size: 15px;
            color: #ffffff;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer ul li {
            margin-bottom: 8px;
        }

        .footer ul li a {
            color: #a0b0c3;
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            margin-top: 48px;
            font-size: 13px;
            color: #8a99ac;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .navbar-custom .navbar-nav {
                margin-left: 0;
                margin-top: 12px;
                padding-top: 10px;
                border-top: 1px solid var(--border-color);
            }

            .navbar-custom .btn-login-nav {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
                justify-content: center;
            }

            .navbar-custom .navbar-collapse {
                padding-bottom: 16px;
            }

            .hero {
                min-height: auto;
                padding: 72px 0;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --section-space: 64px;
            }

            .section-title {
                font-size: 24px;
            }

            .hero h1 {
                font-size: 30px;
            }

            .hero-sub {
                font-size: 16px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .hero-actions .btn-primary-custom,
            .hero-actions .btn-outline-light-custom {
                width: 100%;
                justify-content: center;
            }

            .hero-badges {
                flex-direction: column;
                align-items: center;
            }

            .stat-number {
                font-size: 32px;
            }

            .news-item {
                flex-direction: column;
                align-items: flex-start;
            }

            .news-thumb {
                width: 100%;
                height: 160px;
            }

            .testimonial-card {
                padding: 20px;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .cta-section .btn-cta-custom {
                width: 100%;
                justify-content: center;
            }

            .footer {
                padding-top: 48px;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .hero h1 {
                font-size: 28px;
                line-height: 1.35;
            }

            .hero-sub {
                font-size: 15px;
            }

            .stat-item {
                padding: 12px 8px;
            }

            .stat-number {
                font-size: 28px;
            }

            .news-body h3 {
                font-size: 16px;
            }

            .faq-accordion .accordion-button {
                font-size: 15px;
                padding: 16px 14px;
            }

            .faq-accordion .accordion-body {
                padding-left: 20px;
                font-size: 14px;
            }
        }

        /* ===== 动画 & 交互 ===== */
        .btn {
            transition: all 0.25s ease;
        }

        .btn:focus,
        .form-control:focus,
        .form-check-input:focus {
            box-shadow: 0 0 0 3px rgba(0, 214, 143, 0.2);
            border-color: var(--primary);
        }

        .badge {
            font-weight: 500;
            border-radius: var(--radius-sm);
        }

        .section-divider {
            border: 0;
            height: 1px;
            background: var(--border-color);
            margin: 0;
        }

/* roulang page: category1 */
:root {
            --primary: #00d68f;
            --primary-dark: #00b87a;
            --primary-light: rgba(0, 214, 143, 0.1);
            --accent: #ff7a1a;
            --dark: #0b1220;
            --dark-2: #101a2b;
            --light: #f6f8fb;
            --text: #1a2332;
            --text-2: #5b6b7f;
            --text-3: #8a99ac;
            --border: #e7ebf0;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow: 0 8px 30px rgba(16, 26, 43, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font);
            background: #fff;
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color .2s ease;
        }

        a:hover {
            color: var(--primary-dark);
        }

        ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .container {
            max-width: 1200px;
        }

        /* ===== 顶部信息条 ===== */
        .topbar {
            background: var(--dark);
            color: #a0b0c3;
            font-size: 13px;
            height: 36px;
            line-height: 36px;
        }

        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 100%;
        }

        .topbar a {
            color: #a0b0c3;
            font-size: 13px;
        }

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

        .topbar .top-login {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 24px;
            line-height: 1;
            padding: 0 12px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 999px;
            font-size: 12px;
            transition: all .2s ease;
        }

        .topbar .top-login:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ===== 导航 ===== */
        .navbar-custom {
            background: #fff;
            min-height: 72px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1030;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-main {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
        }

        .brand-sub {
            font-size: 12px;
            color: var(--text-2);
            letter-spacing: 1px;
            font-weight: 500;
        }

        .navbar-custom .navbar-nav {
            gap: 6px;
        }

        .navbar-custom .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 8px 16px;
            border-radius: 8px;
            transition: all .2s ease;
        }

        .navbar-custom .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .navbar-custom .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
        }

        .btn-login-nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 42px;
            padding: 0 22px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 14px;
            border: none;
            transition: all .2s ease;
        }

        .btn-login-nav:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 214, 143, 0.3);
        }

        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 8px;
            width: 44px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 214, 143, 0.2);
        }

        .navbar-toggler-icon-custom {
            position: relative;
            display: inline-block;
            width: 20px;
            height: 2px;
            background: var(--text);
            transition: background .2s ease;
        }

        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: '';
            position: absolute;
            left: 0;
            width: 20px;
            height: 2px;
            background: var(--text);
            transition: transform .2s ease;
        }

        .navbar-toggler-icon-custom::before {
            top: -6px;
        }

        .navbar-toggler-icon-custom::after {
            top: 6px;
        }

        /* ===== 分类页 Hero ===== */
        .page-hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 80px 0 72px;
            color: #fff;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(11, 18, 32, 0.85), rgba(11, 18, 32, 0.6));
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb-custom {
            font-size: 14px;
            color: #a0b0c3;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-custom a {
            color: #a0b0c3;
        }

        .breadcrumb-custom a:hover {
            color: var(--primary);
        }

        .breadcrumb-custom .sep {
            color: #5b6b7f;
            font-size: 12px;
        }

        .page-hero h1 {
            font-size: 44px;
            line-height: 1.3;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .page-hero h1 .hl {
            color: var(--primary);
        }

        .page-hero .lead {
            font-size: 16px;
            color: #c5d0df;
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-badges .badge-soft {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: #fff;
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
        }

        .hero-badges .badge-soft i {
            color: var(--primary);
            font-size: 13px;
        }

        /* ===== 通用区块 ===== */
        .section {
            padding: 96px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.4px;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 999px;
            padding: 4px 14px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 32px;
            line-height: 1.35;
            font-weight: 650;
            color: var(--text);
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 15px;
            color: var(--text-2);
            max-width: 560px;
            line-height: 1.75;
        }

        /* ===== 子主题卡片区 ===== */
        .subtopic-section {
            background: var(--light);
        }

        .subtopic-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            height: 100%;
            transition: all .25s ease;
            position: relative;
        }

        .subtopic-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(0, 214, 143, 0.4);
        }

        .subtopic-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            margin-bottom: 18px;
        }

        .subtopic-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text);
        }

        .subtopic-card p {
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== 登录流程图文区（深色） ===== */
        .flow-section {
            background: var(--dark);
            color: #fff;
        }

        .flow-section .section-label {
            color: var(--primary);
            background: rgba(0, 214, 143, 0.12);
        }

        .flow-section h2 {
            color: #fff;
            font-size: 32px;
            line-height: 1.35;
            font-weight: 650;
            margin-bottom: 14px;
        }

        .flow-section .lead-text {
            color: #a0b0c3;
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 28px;
        }

        .flow-img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
        }

        .flow-img-wrap img {
            width: 100%;
            object-fit: cover;
        }

        .step-list {
            margin-top: 8px;
        }

        .step-item {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .step-item:last-child {
            border-bottom: none;
        }

        .step-num {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            flex-shrink: 0;
            background: rgba(0, 214, 143, 0.15);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }

        .step-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
        }

        .step-item p {
            font-size: 14px;
            color: #a0b0c3;
            line-height: 1.7;
            margin: 0;
        }

        /* ===== 功能快速入口 ===== */
        .quick-section {
            position: relative;
            padding: 72px 0;
            background: url('/assets/images/coverpic/cover-2.webp') center/cover no-repeat;
        }

        .quick-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 18, 32, 0.86);
        }

        .quick-section .container {
            position: relative;
            z-index: 1;
        }

        .quick-section .section-label {
            color: var(--primary);
            background: rgba(0, 214, 143, 0.18);
        }

        .quick-section h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 650;
            margin-bottom: 8px;
        }

        .quick-section .sub-text {
            color: #a0b0c3;
            font-size: 15px;
            margin-bottom: 36px;
        }

        .quick-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 14px;
            padding: 28px 18px;
            color: #fff;
            text-align: center;
            transition: all .25s ease;
            height: 100%;
        }

        .quick-item:hover {
            background: rgba(0, 214, 143, 0.15);
            border-color: rgba(0, 214, 143, 0.5);
            color: #fff;
            transform: translateY(-3px);
        }

        .quick-item i {
            font-size: 24px;
            color: var(--primary);
        }

        .quick-item span {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
        }

        .quick-item small {
            font-size: 13px;
            color: #a0b0c3;
            line-height: 1.6;
        }

        /* ===== FAQ区 ===== */
        .faq-section {
            background: #fff;
        }

        .faq-accordion {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .25s ease, box-shadow .25s ease;
        }

        .faq-item:has(.accordion-collapse.show) {
            border-color: rgba(0, 214, 143, 0.4);
            box-shadow: var(--shadow);
        }

        .faq-button {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: transparent;
            border: none;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            cursor: pointer;
            transition: background .25s ease;
            font-family: var(--font);
        }

        .faq-button:hover {
            background: var(--light);
        }

        .faq-button i {
            color: var(--primary);
            font-size: 14px;
            transition: transform .3s ease;
            flex-shrink: 0;
            margin-left: 16px;
        }

        .faq-button:not(.collapsed) i {
            transform: rotate(135deg);
        }

        .faq-button.accordion-button::after {
            display: none;
        }

        .faq-button.accordion-button:not(.collapsed) {
            background: var(--light);
            color: var(--text);
            box-shadow: none;
        }

        .faq-body {
            border-left: 3px solid var(--primary);
            background: var(--light);
            padding: 6px 22px 22px 22px;
            color: var(--text-2);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ===== CTA区 ===== */
        .cta-section {
            background: linear-gradient(135deg, #00d68f, #00b87a);
            padding: 72px 0;
            text-align: center;
            position: relative;
        }

        .cta-section h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.92);
            font-size: 16px;
            margin-bottom: 32px;
        }

        .btn-cta-lg {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 56px;
            padding: 0 48px;
            background: #fff;
            color: var(--primary);
            border-radius: 14px;
            font-size: 17px;
            font-weight: 700;
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
            transition: all .25s ease;
            border: none;
        }

        .btn-cta-lg:hover {
            transform: scale(1.03);
            color: var(--primary-dark);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.2);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--dark);
            color: #a0b0c3;
            padding: 72px 0 0;
            font-size: 14px;
        }

        .footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer a {
            color: #a0b0c3;
            transition: color .2s ease;
        }

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

        .footer ul li {
            padding: 5px 0;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
        }

        .footer-brand-text {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .footer-brand-sub {
            font-size: 13px;
            color: var(--primary);
        }

        .footer p {
            line-height: 1.8;
            color: #8a99ac;
            font-size: 14px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 48px;
            padding: 20px 0;
            font-size: 13px;
            color: #6b7a8f;
        }

        .footer-bottom a {
            color: #6b7a8f;
        }

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

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .section {
                padding: 64px 0;
            }
            .navbar-custom .navbar-collapse {
                padding: 16px;
                background: #fff;
                border-radius: 0 0 16px 16px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
                margin-top: 12px;
            }
            .navbar-custom .navbar-nav {
                gap: 4px;
            }
            .btn-login-nav {
                margin-top: 12px;
                width: 100%;
                height: 46px;
            }
            .page-hero {
                padding: 64px 0;
            }
            .page-hero h1 {
                font-size: 34px;
            }
            .flow-section .flow-img-wrap {
                margin-top: 36px;
            }
        }

        @media (max-width: 767.98px) {
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero .lead {
                font-size: 15px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .flow-section h2 {
                font-size: 24px;
            }
            .quick-section h2 {
                font-size: 24px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .quick-item {
                padding: 20px 14px;
            }
        }

        @media (max-width: 575.98px) {
            .topbar .service-text {
                display: none;
            }
            .topbar .top-login {
                padding: 0 10px;
                font-size: 12px;
            }
            .page-hero {
                padding: 52px 0;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .hero-badges .badge-soft {
                font-size: 12px;
                padding: 5px 12px;
            }
            .subtopic-card {
                padding: 20px 18px;
            }
            .faq-button {
                font-size: 15px;
                padding: 16px 16px;
            }
            .faq-body {
                padding: 4px 16px 18px 16px;
                font-size: 14px;
            }
            .btn-cta-lg {
                height: 50px;
                padding: 0 36px;
                font-size: 16px;
            }
            .cta-section p {
                font-size: 14px;
            }
        }

/* roulang page: article */
:root {
    --bs-primary: #00d68f;
    --bs-primary-rgb: 0, 214, 143;
    --primary: #00d68f;
    --primary-dark: #00b87a;
    --primary-10: rgba(0, 214, 143, 0.10);
    --accent: #ff7a1a;
    --dark-bg: #0b1220;
    --dark-bg-2: #101a2b;
    --light-bg: #f6f8fb;
    --card-bg: #ffffff;
    --text-main: #1a2332;
    --text-secondary: #5b6b7f;
    --text-weak: #8a99ac;
    --border: #e7ebf0;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    --shadow-card: 0 8px 30px rgba(16, 26, 43, 0.08);
    --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
    --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    font-family: var(--font-cn);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-main);
    background: var(--card-bg);
    margin: 0;
    -webkit-font-smoothing: antialiased;
}
a { transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease; }
img { max-width: 100%; height: auto; }
::selection { background: rgba(0, 214, 143, 0.25); color: var(--text-main); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--light-bg); }
::-webkit-scrollbar-thumb { background: #c3ccd8; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }
a:focus-visible, button:focus-visible {
    outline: 3px solid rgba(0, 214, 143, 0.4);
    outline-offset: 2px;
    border-radius: 4px;
}
.container { max-width: 1200px; }

/* ===== 顶部信息条 ===== */
.topbar {
    background: var(--dark-bg);
    color: #a0b0c3;
    font-size: 13px;
    height: 36px;
    min-height: 36px;
    position: relative;
    z-index: 1002;
}
.topbar .container { height: 100%; }
.topbar-text {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: #a0b0c3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 60%;
}
.topbar-text i { color: var(--primary); font-size: 12px; }
.topbar-actions {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    white-space: nowrap;
}
.topbar-actions a { color: #d6e0ec; text-decoration: none; transition: color 0.2s; }
.topbar-actions a:hover { color: var(--primary); }
.topbar-sep { color: rgba(255, 255, 255, 0.22); }
.topbar-service { color: #8a99ac; }

/* ===== 阅读进度条 ===== */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0;
    background: var(--primary);
    z-index: 2000;
    border-radius: 0 3px 3px 0;
    box-shadow: 0 0 10px rgba(0, 214, 143, 0.4);
    transition: width 0.06s linear;
}

/* ===== 主导航 ===== */
.navbar-custom {
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    min-height: 72px;
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}
.navbar-custom .container { min-height: 72px; flex-wrap: wrap; }
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0;
    margin: 0 24px 0 0;
}
.brand-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-main { font-size: 20px; font-weight: 700; color: var(--primary); letter-spacing: 0.3px; }
.brand-sub { font-size: 12px; font-weight: 500; color: var(--text-secondary); letter-spacing: 0.6px; margin-top: 2px; }
.navbar-custom .navbar-nav { gap: 2px; }
.navbar-custom .nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-main);
    padding: 9px 16px !important;
    border-radius: 8px;
    position: relative;
    transition: color 0.2s, background 0.2s;
}
.navbar-custom .nav-link:hover,
.navbar-custom .nav-link:focus {
    color: var(--primary);
    background: var(--primary-10);
}
.navbar-custom .nav-link.active {
    color: var(--primary);
    background: var(--primary-10);
    font-weight: 600;
}
.btn-login-nav {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 44px;
    padding: 0 24px;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    margin-left: 8px;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}
.btn-login-nav:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}
.btn-login-nav:active { transform: translateY(0); box-shadow: none; }
.navbar-toggler {
    border: none;
    padding: 8px;
    outline: none;
    box-shadow: none !important;
}
.navbar-toggler-icon-custom {
    width: 26px;
    height: 2px;
    background: var(--text-main);
    position: relative;
    display: inline-block;
    border-radius: 2px;
    transition: background 0.2s;
}
.navbar-toggler-icon-custom::before,
.navbar-toggler-icon-custom::after {
    content: '';
    position: absolute;
    left: 0;
    width: 26px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    transition: transform 0.2s, top 0.2s;
}
.navbar-toggler-icon-custom::before { top: -8px; }
.navbar-toggler-icon-custom::after { top: 8px; }

/* ===== 文章头部 ===== */
.article-header-section {
    position: relative;
    background:
        linear-gradient(0deg, rgba(11, 18, 32, 0.86), rgba(11, 18, 32, 0.62)),
        url('/assets/images/backpic/back-1.png') center center / cover no-repeat,
        var(--dark-bg);
    padding: 56px 0 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.article-wrap { max-width: 860px; margin: 0 auto; }
.breadcrumb-nav { margin-bottom: 22px; }
.breadcrumb-nav .breadcrumb {
    margin: 0;
    background: transparent;
    padding: 0;
}
.breadcrumb-nav .breadcrumb-item {
    font-size: 14px;
    color: #a0b0c3;
}
.breadcrumb-nav .breadcrumb-item a {
    color: #a0b0c3;
    text-decoration: none;
    transition: color 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.breadcrumb-nav .breadcrumb-item a:hover { color: var(--primary); }
.breadcrumb-nav .breadcrumb-item.active { color: rgba(255, 255, 255, 0.62); }
.breadcrumb-nav .breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255, 255, 255, 0.3);
    content: '/';
    padding: 0 6px;
}
.article-title {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.3;
    color: #ffffff;
    margin: 0 0 20px;
    letter-spacing: 0.5px;
    word-break: break-word;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 24px;
    font-size: 14px;
    color: #a0b0c3;
}
.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.article-meta i { color: var(--primary); font-size: 13px; }

/* ===== 文章正文 ===== */
.article-main-section {
    background: #ffffff;
    padding: 16px 0 32px;
}
.article-body {
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-main);
    padding: 36px 0 16px;
    overflow-wrap: break-word;
}
.article-body p { margin-bottom: 24px; }
.article-body h2,
.article-body h3,
.article-body h4,
.article-body h5 {
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.4;
    margin: 36px 0 16px;
}
.article-body h2 {
    font-size: 26px;
    padding-left: 14px;
    border-left: 4px solid var(--primary);
}
.article-body h3 { font-size: 20px; }
.article-body h4 { font-size: 17px; }
.article-body a {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid rgba(0, 214, 143, 0.3);
}
.article-body a:hover { color: var(--primary-dark); border-bottom-color: var(--primary-dark); }
.article-body ul,
.article-body ol {
    padding-left: 24px;
    margin-bottom: 24px;
}
.article-body li { margin-bottom: 8px; }
.article-body blockquote {
    border-left: 4px solid var(--primary);
    background: var(--light-bg);
    padding: 16px 20px;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin-bottom: 24px;
    color: var(--text-secondary);
}
.article-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 16px 0;
}
.article-body pre {
    background: var(--dark-bg);
    color: #d7e0ec;
    padding: 20px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: 24px;
    font-size: 14px;
    line-height: 1.6;
}
.article-body code {
    background: var(--light-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 14px;
    color: #d6336c;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
.article-body pre code {
    background: transparent;
    padding: 0;
    color: inherit;
    font-size: 14px;
}
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 24px;
}
.article-body th,
.article-body td {
    border: 1px solid var(--border);
    padding: 10px 14px;
    font-size: 14px;
    line-height: 1.6;
}
.article-body th { background: var(--light-bg); font-weight: 600; }

/* ===== 内容未找到 ===== */
.article-empty {
    text-align: center;
    padding: 80px 24px;
    background: var(--light-bg);
    border: 1px dashed var(--border);
    border-radius: var(--radius-lg);
    margin: 28px 0 40px;
}
.article-empty .empty-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: var(--primary-10);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
}
.article-empty h3 { font-size: 22px; font-weight: 700; color: var(--text-main); margin-bottom: 8px; }
.article-empty p { font-size: 15px; color: var(--text-secondary); margin-bottom: 20px; }
.article-empty .btn-go-login { height: 44px; padding: 0 24px; font-size: 14px; }

/* ===== 标签区 ===== */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    padding: 24px 0 8px;
    border-top: 1px solid var(--border);
}
.tag-label {
    font-size: 14px;
    color: var(--text-weak);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.tag-label i { color: var(--primary); }
.tag-chip {
    display: inline-flex;
    align-items: center;
    padding: 5px 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--light-bg);
    border: 1px solid var(--border);
    border-radius: 999px;
    text-decoration: none;
    transition: all 0.2s;
}
.tag-chip:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--primary-10);
    transform: translateY(-1px);
}

/* ===== 相关推荐 ===== */
.related-section {
    background: var(--light-bg);
    padding: 72px 0;
    border-top: 1px solid var(--border);
}
.section-heading {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 28px;
}
.section-heading h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-main);
    margin: 0;
    line-height: 1.35;
}
.section-heading i {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--primary-10);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    flex-shrink: 0;
}
.related-list { display: flex; flex-direction: column; gap: 16px; }
.related-card {
    display: flex;
    gap: 20px;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px;
    text-decoration: none;
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}
.related-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0, 214, 143, 0.35);
}
.related-thumb {
    width: 120px;
    height: 90px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--light-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.related-thumb::before {
    content: '\f03e';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: #c3ccd8;
    font-size: 24px;
}
.related-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: relative;
    z-index: 1;
    display: block;
    transition: transform 0.3s ease;
}
.related-card:hover .related-thumb img { transform: scale(1.05); }
.related-info { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.related-badge {
    display: inline-flex;
    align-self: flex-start;
    align-items: center;
    padding: 3px 10px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.4px;
    color: var(--primary);
    background: var(--primary-10);
    border-radius: 999px;
    margin-bottom: 8px;
}
.related-info h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-main);
    margin: 0 0 6px;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.2s;
}
.related-card:hover .related-info h3 { color: var(--primary); }
.related-info p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== FAQ 区 ===== */
.faq-section {
    background: #ffffff;
    padding: 72px 0 56px;
}
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-accordion .accordion-item {
    background: #fff;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-md) !important;
    margin-bottom: 12px;
    overflow: hidden;
}
.faq-accordion .accordion-button {
    min-height: 56px;
    padding: 16px 20px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    background: #ffffff;
    border: none;
    box-shadow: none;
    border-left: 3px solid transparent;
    transition: color 0.2s, background 0.2s, border-color 0.2s;
}
.faq-accordion .accordion-button::after {
    background-image: none;
    content: '+';
    font-family: var(--font-cn);
    font-size: 22px;
    font-weight: 300;
    color: var(--text-secondary);
    transform: none;
    transition: transform 0.25s ease, color 0.25s ease;
}
.faq-accordion .accordion-button:not(.collapsed) {
    background: var(--light-bg);
    color: var(--primary);
    border-left-color: var(--primary);
}
.faq-accordion .accordion-button:not(.collapsed)::after {
    transform: rotate(45deg);
    color: var(--primary);
}
.faq-accordion .accordion-button:hover {
    color: var(--primary);
}
.faq-accordion .accordion-button:focus {
    box-shadow: 0 0 0 3px rgba(0, 214, 143, 0.15);
    outline: none;
}
.faq-accordion .accordion-body {
    padding: 4px 20px 22px 23px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    background: var(--light-bg);
    border-top: 1px solid rgba(0, 0, 0, 0.03);
}

/* ===== 底部导航 ===== */
.article-bottom-section {
    background: var(--light-bg);
    border-top: 1px solid var(--border);
    padding: 24px 0 72px;
}
.article-bottom-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 0;
}
.link-return {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 44px;
    padding: 0 20px;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--primary);
    color: var(--primary);
    background: transparent;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, transform 0.2s;
}
.link-return:hover {
    background: var(--primary-10);
    color: var(--primary-dark);
    transform: translateY(-1px);
}
.btn-go-login {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 28px;
    border-radius: var(--radius-md);
    background: var(--primary);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}
.btn-go-login:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}
.btn-go-login:active { transform: translateY(0); box-shadow: none; }

/* ===== 页脚 ===== */
.footer {
    background: var(--dark-bg);
    color: #a0b0c3;
    padding: 64px 0 0;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.footer-brand-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}
.footer-brand-text { font-size: 20px; font-weight: 700; color: #fff; line-height: 1.2; }
.footer-brand-sub { font-size: 12px; color: var(--primary); letter-spacing: 0.5px; }
.footer p {
    font-size: 14px;
    line-height: 1.7;
    color: #8a99ac;
    margin: 0;
    max-width: 320px;
}
.footer h4 {
    font-size: 15px;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 18px;
}
.footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer ul li {
    margin-bottom: 10px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    color: #a0b0c3;
}
.footer ul li a {
    color: #a0b0c3;
    text-decoration: none;
    transition: color 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.footer ul li a:hover { color: var(--primary); }
.footer ul li i { color: var(--primary); font-size: 13px; width: 16px; text-align: center; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: 48px;
    padding: 20px 0;
    font-size: 13px;
    color: #8a99ac;
}
.footer-bottom .row { align-items: center; }

/* ===== 响应式 ===== */
@media (max-width: 991.98px) {
    .navbar-custom { min-height: 64px; }
    .navbar-custom .container { min-height: 64px; }
    .navbar-custom .navbar-collapse {
        background: #ffffff;
        border-top: 1px solid var(--border);
        margin-top: 10px;
        padding: 12px 0 4px;
        width: 100%;
        flex-basis: 100%;
    }
    .navbar-custom .navbar-nav { gap: 4px; }
    .navbar-custom .nav-link { padding: 10px 16px !important; }
    .btn-login-nav {
        margin: 10px 0 6px;
        width: 100%;
        height: 46px;
    }
    .article-header-section { padding: 44px 0 40px; }
    .article-title { font-size: 36px; }
    .related-section { padding: 56px 0; }
    .faq-section { padding: 56px 0 40px; }
    .footer { padding-top: 48px; }
}
@media (max-width: 767.98px) {
    .article-title { font-size: 32px; }
    .article-meta { gap: 8px 16px; font-size: 13px; }
    .related-card { gap: 14px; }
    .article-body table { display: block; overflow-x: auto; }
    .footer .row > [class*="col-"] { margin-bottom: 24px; }
    .footer-bottom { margin-top: 32px; }
}
@media (max-width: 575.98px) {
    .topbar-text { font-size: 12px; max-width: 55%; }
    .topbar-label { display: none; }
    .topbar-actions { gap: 8px; font-size: 12px; }
    .topbar-service { display: none; }
    .article-header-section { padding: 36px 0 32px; }
    .article-title { font-size: 28px; }
    .article-body { padding-top: 28px; }
    .article-body h2 { font-size: 22px; }
    .article-body h3 { font-size: 18px; }
    .related-section { padding: 48px 0; }
    .related-card { padding: 12px; gap: 12px; }
    .related-thumb { width: 88px; height: 66px; }
    .related-info h3 { font-size: 15px; }
    .related-info p { font-size: 13px; -webkit-line-clamp: 2; }
    .faq-section { padding: 48px 0 32px; }
    .faq-accordion .accordion-button { font-size: 15px; padding: 14px 16px; }
    .faq-accordion .accordion-body { font-size: 14px; padding: 4px 16px 18px 19px; }
    .article-bottom-section { padding: 20px 0 48px; }
    .article-bottom-nav { flex-direction: column; align-items: stretch; }
    .article-bottom-nav .link-return,
    .article-bottom-nav .btn-go-login { justify-content: center; width: 100%; }
    .footer { padding-top: 40px; }
}