/* roulang page: index */
:root {
            --ru-primary: #2A6BA8;
            --ru-primary-hover: #1F5583;
            --ru-deep: #153A5B;
            --ru-light-blue: #EAF2F8;
            --ru-border-blue: #D7E4EF;
            --ru-cloud: #F7FAFD;
            --ru-gold: #C8A45D;
            --ru-gold-hover: #B08F3F;
            --ru-bg: #F5F8FB;
            --ru-text: #2B3D4F;
            --ru-text-light: #5E7389;
            --ru-radius-card: 16px;
            --ru-radius-img: 10px;
            --ru-radius-btn: 999px;
            --ru-shadow-card: 0 8px 24px rgba(21, 58, 91, 0.08);
            --ru-shadow-card-hover: 0 14px 34px rgba(21, 58, 91, 0.14);
            --ru-border: 1px solid #D7E4EF;
            --ru-font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
            --ru-section-padding: 80px 0;
            --ru-section-padding-md: 60px 0;
            --ru-section-padding-sm: 44px 0;
        }

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

        body {
            font-family: var(--ru-font-family);
            font-size: 15px;
            line-height: 1.75;
            color: var(--ru-text);
            background-color: var(--ru-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        .ru-container {
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .ru-section {
            padding: var(--ru-section-padding);
        }

        .ru-section-alt {
            background-color: var(--ru-cloud);
        }

        .ru-section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--ru-primary);
            background: var(--ru-light-blue);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
            border: 1px solid var(--ru-border-blue);
        }

        .ru-section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--ru-deep);
            margin-bottom: 14px;
            line-height: 1.35;
        }

        .ru-section-desc {
            font-size: 16px;
            color: var(--ru-text-light);
            max-width: 760px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .ru-card {
            background: #ffffff;
            border: var(--ru-border);
            border-radius: var(--ru-radius-card);
            box-shadow: var(--ru-shadow-card);
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .ru-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--ru-shadow-card-hover);
        }

        .ru-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--ru-radius-img) var(--ru-radius-img) 0 0;
        }

        .ru-card-body {
            padding: 20px 22px 22px;
        }

        .ru-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--ru-deep);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .ru-card-text {
            font-size: 14px;
            color: var(--ru-text-light);
            line-height: 1.75;
            margin-bottom: 14px;
        }

        .ru-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--ru-radius-btn);
            border: 2px solid transparent;
            cursor: pointer;
            transition: all 0.22s ease;
            min-height: 46px;
            line-height: 1.4;
            text-align: center;
        }

        .ru-btn-primary {
            background-color: var(--ru-primary);
            color: #ffffff;
            border-color: var(--ru-primary);
        }

        .ru-btn-primary:hover {
            background-color: var(--ru-primary-hover);
            border-color: var(--ru-primary-hover);
            color: #ffffff;
            box-shadow: 0 6px 18px rgba(42, 107, 168, 0.3);
        }

        .ru-btn-gold {
            background-color: var(--ru-gold);
            color: var(--ru-deep);
            border-color: var(--ru-gold);
        }

        .ru-btn-gold:hover {
            background-color: var(--ru-gold-hover);
            border-color: var(--ru-gold-hover);
            color: #fff;
            box-shadow: 0 6px 18px rgba(200, 164, 93, 0.35);
        }

        .ru-btn-outline {
            background-color: transparent;
            color: var(--ru-primary);
            border-color: var(--ru-primary);
        }

        .ru-btn-outline:hover {
            background-color: var(--ru-light-blue);
            border-color: var(--ru-primary);
            color: var(--ru-primary-hover);
        }

        .ru-btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            min-height: 38px;
        }

        .ru-btn:focus-visible,
        .ru-nav-link:focus-visible,
        .ru-step-link:focus-visible,
        .ru-form-control:focus-visible {
            outline: 3px solid rgba(42, 107, 168, 0.35);
            outline-offset: 2px;
        }

        .ru-badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            background: var(--ru-light-blue);
            color: var(--ru-primary);
            border: 1px solid var(--ru-border-blue);
        }

        .ru-badge-gold {
            background: #fff8e8;
            color: #8a6a20;
            border-color: #e6d5a8;
        }

        /* ========== HEADER ========== */
        .ru-header {
            background: #ffffff;
            border-bottom: 1px solid var(--ru-border-blue);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 2px 10px rgba(21, 58, 91, 0.05);
        }

        .ru-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 24px;
        }

        .ru-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--ru-deep);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .ru-logo:hover {
            color: var(--ru-primary);
        }

        .ru-logo .ru-logo-accent {
            color: var(--ru-primary);
        }

        .ru-nav {
            display: none;
            align-items: center;
            gap: 24px;
        }

        .ru-nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--ru-text);
            padding: 8px 2px;
            border-bottom: 2px solid transparent;
            transition: color 0.2s, border-color 0.2s;
            white-space: nowrap;
        }

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

        .ru-nav-link.active {
            color: var(--ru-primary);
            border-bottom-color: var(--ru-primary);
            font-weight: 600;
        }

        .ru-mobile-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border: 1px solid var(--ru-border-blue);
            border-radius: 10px;
            background: #fff;
            color: var(--ru-deep);
            font-size: 18px;
            cursor: pointer;
        }

        /* ========== STEP NAV ========== */
        .ru-step-nav {
            background: var(--ru-cloud);
            border-top: 1px solid var(--ru-border-blue);
            padding: 12px 0;
        }

        .ru-step-track {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 2px 0;
        }

        .ru-step-track::-webkit-scrollbar {
            display: none;
        }

        .ru-step-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            border-radius: 999px;
            background: #fff;
            border: 1px solid var(--ru-border-blue);
            font-size: 13px;
            font-weight: 500;
            color: var(--ru-text-light);
            white-space: nowrap;
            transition: all 0.2s ease;
            min-height: 40px;
        }

        .ru-step-link:hover {
            border-color: var(--ru-primary);
            color: var(--ru-primary);
            background: var(--ru-light-blue);
        }

        .ru-step-link .ru-step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--ru-border-blue);
            color: var(--ru-deep);
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .ru-step-link.active {
            background: var(--ru-primary);
            border-color: var(--ru-primary);
            color: #fff;
        }

        .ru-step-link.active .ru-step-num {
            background: #fff;
            color: var(--ru-primary);
        }

        .ru-step-link.done {
            background: var(--ru-light-blue);
            border-color: var(--ru-border-blue);
            color: var(--ru-primary);
        }

        .ru-step-link.done .ru-step-num {
            background: var(--ru-primary);
            color: #fff;
        }

        /* ========== HERO ========== */
        .ru-hero {
            position: relative;
            background: url('/assets/images/e390719535fc6560.webp') center center / cover no-repeat;
            min-height: 560px;
            display: flex;
            align-items: center;
            padding: 80px 0 60px;
        }

        .ru-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(247, 250, 253, 0.92) 0%, rgba(234, 242, 248, 0.9) 50%, rgba(215, 228, 239, 0.82) 100%);
            z-index: 1;
        }

        .ru-hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .ru-hero-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            align-items: center;
        }

        .ru-hero-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--ru-deep);
            line-height: 1.3;
            margin-bottom: 18px;
        }

        .ru-hero-subtitle {
            font-size: 17px;
            color: var(--ru-text-light);
            line-height: 1.8;
            max-width: 620px;
            margin-bottom: 26px;
        }

        .ru-hero-cta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 10px;
        }

        .ru-metrics-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .ru-metric-card {
            background: #ffffff;
            border: var(--ru-border);
            border-radius: var(--ru-radius-card);
            padding: 22px 20px;
            box-shadow: var(--ru-shadow-card);
            text-align: center;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .ru-metric-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--ru-shadow-card-hover);
        }

        .ru-metric-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--ru-primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .ru-metric-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--ru-deep);
            letter-spacing: 0.02em;
        }

        /* ========== SERVICE MATRIX ========== */
        .ru-matrix-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        /* ========== COMPARE ========== */
        .ru-compare-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .ru-compare-card {
            background: #fff;
            border: var(--ru-border);
            border-radius: var(--ru-radius-card);
            padding: 26px 24px;
            box-shadow: var(--ru-shadow-card);
        }

        .ru-compare-card.highlight {
            border-color: var(--ru-gold);
            box-shadow: 0 10px 30px rgba(200, 164, 93, 0.18);
            position: relative;
        }

        .ru-compare-card.highlight::after {
            content: '推荐';
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--ru-gold);
            color: #fff;
            padding: 3px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
        }

        .ru-compare-metric {
            display: flex;
            align-items: baseline;
            gap: 6px;
            margin: 10px 0;
            font-size: 14px;
        }

        .ru-compare-metric .up {
            color: #1a7f37;
            font-weight: 600;
        }

        .ru-compare-metric .down {
            color: #c0392b;
            font-weight: 600;
        }

        /* ========== TIMELINE ========== */
        .ru-timeline {
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 24px;
            padding-left: 28px;
        }

        .ru-timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: var(--ru-border-blue);
        }

        .ru-timeline-item {
            position: relative;
            padding-left: 14px;
        }

        .ru-timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 8px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--ru-primary);
            border: 2px solid #fff;
            box-shadow: 0 0 0 2px var(--ru-border-blue);
        }

        .ru-timeline-year {
            font-size: 13px;
            font-weight: 700;
            color: var(--ru-primary);
            margin-bottom: 4px;
        }

        .ru-timeline-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--ru-deep);
            margin-bottom: 4px;
        }

        .ru-timeline-text {
            font-size: 14px;
            color: var(--ru-text-light);
        }

        /* ========== SCENE ========== */
        .ru-scene-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        /* ========== NEWS ========== */
        .ru-news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .ru-news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--ru-text-light);
            margin-bottom: 8px;
        }

        /* ========== GUARANTEE ========== */
        .ru-guarantee-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
        }

        .ru-guarantee-item {
            background: #fff;
            border: var(--ru-border);
            border-radius: 14px;
            padding: 20px 18px;
            box-shadow: var(--ru-shadow-card);
            transition: transform 0.2s ease;
        }

        .ru-guarantee-item:hover {
            transform: translateY(-2px);
        }

        .ru-guarantee-icon {
            font-size: 22px;
            color: var(--ru-primary);
            margin-bottom: 8px;
        }

        .ru-guarantee-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--ru-deep);
            margin-bottom: 6px;
        }

        .ru-guarantee-text {
            font-size: 13px;
            color: var(--ru-text-light);
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .ru-faq-item {
            border: var(--ru-border);
            border-radius: 14px;
            margin-bottom: 12px;
            background: #fff;
            overflow: hidden;
        }

        .ru-faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            color: var(--ru-deep);
            font-size: 15px;
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
        }

        .ru-faq-question:hover {
            color: var(--ru-primary);
        }

        .ru-faq-question .fa-chevron-down {
            transition: transform 0.3s ease;
            color: var(--ru-text-light);
            flex-shrink: 0;
        }

        .ru-faq-item.open .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--ru-primary);
        }

        .ru-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .ru-faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--ru-text-light);
            line-height: 1.8;
        }

        /* ========== GUIDE ========== */
        .ru-guide-list {
            list-style: none;
            padding: 0;
            margin: 0;
            counter-reset: guide-counter;
        }

        .ru-guide-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 16px 0;
            border-bottom: 1px solid var(--ru-border-blue);
        }

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

        .ru-guide-num {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--ru-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
        }

        .ru-guide-content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--ru-deep);
            margin-bottom: 4px;
        }

        .ru-guide-content p {
            font-size: 14px;
            color: var(--ru-text-light);
            margin: 0;
        }

        /* ========== MEMBER BANNER ========== */
        .ru-member-banner {
            background: linear-gradient(120deg, var(--ru-deep) 0%, #1E4D75 100%);
            border-radius: var(--ru-radius-card);
            padding: 36px 30px;
            color: #fff;
            display: flex;
            flex-direction: column;
            gap: 20px;
            align-items: flex-start;
        }

        .ru-member-banner h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .ru-member-banner p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ========== FORM ========== */
        .ru-form-section {
            background: var(--ru-deep);
            border-radius: var(--ru-radius-card);
            padding: 40px 30px;
        }

        .ru-form-card {
            background: #fff;
            border-radius: var(--ru-radius-card);
            padding: 30px 26px;
            box-shadow: 0 12px 36px rgba(21, 58, 91, 0.2);
        }

        .ru-form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--ru-deep);
            margin-bottom: 6px;
        }

        .ru-form-control {
            display: block;
            width: 100%;
            padding: 12px 16px;
            font-size: 15px;
            border: 1px solid var(--ru-border-blue);
            border-radius: 10px;
            background: #fff;
            color: var(--ru-text);
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            min-height: 48px;
            font-family: var(--ru-font-family);
        }

        .ru-form-control:focus {
            border-color: var(--ru-primary);
            box-shadow: 0 0 0 4px rgba(42, 107, 168, 0.15);
            outline: none;
        }

        .ru-form-control::placeholder {
            color: #9AAFC2;
        }

        textarea.ru-form-control {
            min-height: 110px;
            resize: vertical;
        }

        .ru-form-note {
            font-size: 13px;
            color: var(--ru-text-light);
            margin-top: 12px;
        }

        /* ========== FOOTER ========== */
        .ru-footer {
            background: var(--ru-deep);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 32px;
            margin-top: 0;
        }

        .ru-footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .ru-footer-text {
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 20px;
            max-width: 480px;
        }

        .ru-footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-bottom: 20px;
        }

        .ru-footer-links a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
            transition: color 0.2s;
        }

        .ru-footer-links a:hover {
            color: #fff;
        }

        .ru-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        /* ========== RESPONSIVE ========== */
        @media (min-width: 576px) {
            .ru-metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .ru-guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 768px) {
            .ru-section {
                padding: var(--ru-section-padding-md);
            }
            .ru-hero-title {
                font-size: 34px;
            }
            .ru-hero-grid {
                grid-template-columns: 1.2fr 1fr;
                gap: 48px;
            }
            .ru-metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .ru-matrix-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .ru-compare-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .ru-scene-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 22px;
            }
            .ru-news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 22px;
            }
            .ru-guarantee-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            .ru-member-banner {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
                padding: 40px 36px;
            }
            .ru-form-section {
                padding: 50px 44px;
            }
            .ru-timeline {
                flex-direction: row;
                padding-left: 0;
                padding-top: 32px;
                gap: 0;
            }
            .ru-timeline::before {
                left: 0;
                right: 0;
                top: 14px;
                bottom: auto;
                width: 100%;
                height: 2px;
            }
            .ru-timeline-item {
                flex: 1;
                padding-left: 8px;
                padding-right: 8px;
                text-align: center;
            }
            .ru-timeline-item::before {
                left: 50%;
                top: -24px;
                transform: translateX(-50%);
            }
            .ru-nav {
                display: flex;
            }
            .ru-mobile-toggle {
                display: none;
            }
        }

        @media (min-width: 992px) {
            .ru-hero-title {
                font-size: 38px;
            }
            .ru-matrix-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            .ru-news-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            .ru-metrics-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            .ru-section-title {
                font-size: 30px;
            }
        }

        @media (max-width: 575px) {
            .ru-hero {
                padding: 60px 0 40px;
                min-height: auto;
            }
            .ru-hero-title {
                font-size: 26px;
            }
            .ru-section-title {
                font-size: 22px;
            }
            .ru-metric-number {
                font-size: 26px;
            }
            .ru-card-img {
                height: 160px;
            }
            .ru-timeline-item {
                padding-left: 10px;
            }
            .ru-form-section {
                padding: 28px 18px;
            }
        }

/* Mobile nav open state */
        @media (max-width: 767px) {
            .ru-nav.mobile-open {
                display: flex;
                flex-direction: column;
                gap: 8px;
                padding: 12px 0;
                border-top: 1px solid var(--ru-border-blue);
                margin-top: 10px;
            }
            .ru-nav {
                display: none;
            }
            .ru-header-inner {
                flex-wrap: wrap;
            }
        }

/* roulang page: category1 */
:root {
            --ru-primary: #2A6BA8;
            --ru-primary-hover: #1F5583;
            --ru-deep: #153A5B;
            --ru-light-blue: #EAF2F8;
            --ru-border-blue: #D7E4EF;
            --ru-cloud: #F7FAFD;
            --ru-gold: #C8A45D;
            --ru-gold-hover: #B08F3F;
            --ru-bg: #F5F8FB;
            --ru-text: #2B3D4F;
            --ru-text-light: #5E7389;
            --ru-radius-card: 16px;
            --ru-radius-img: 10px;
            --ru-radius-btn: 999px;
            --ru-shadow-card: 0 8px 24px rgba(21, 58, 91, 0.08);
            --ru-shadow-card-hover: 0 14px 34px rgba(21, 58, 91, 0.14);
            --ru-border: 1px solid #D7E4EF;
            --ru-font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
            --ru-section-padding: 80px 0;
            --ru-section-padding-md: 60px 0;
            --ru-section-padding-sm: 44px 0;
        }
        * {
            box-sizing: border-box;
        }
        body {
            font-family: var(--ru-font-family);
            font-size: 15px;
            line-height: 1.75;
            color: var(--ru-text);
            background-color: var(--ru-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: var(--ru-primary);
            transition: color 0.2s ease, background-color 0.2s ease;
        }
        a:hover {
            color: var(--ru-primary-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .ru-container {
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .ru-section {
            padding: var(--ru-section-padding);
        }
        .ru-section-alt {
            background-color: var(--ru-cloud);
        }
        .ru-section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--ru-primary);
            background: var(--ru-light-blue);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
            border: 1px solid var(--ru-border-blue);
        }
        .ru-section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--ru-deep);
            margin-bottom: 14px;
            line-height: 1.35;
        }
        .ru-section-desc {
            font-size: 16px;
            color: var(--ru-text-light);
            max-width: 760px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .ru-card {
            background: #ffffff;
            border: var(--ru-border);
            border-radius: var(--ru-radius-card);
            box-shadow: var(--ru-shadow-card);
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .ru-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--ru-shadow-card-hover);
        }
        .ru-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--ru-radius-img) var(--ru-radius-img) 0 0;
        }
        .ru-card-body {
            padding: 20px 22px 22px;
        }
        .ru-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--ru-deep);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .ru-card-text {
            font-size: 14px;
            color: var(--ru-text-light);
            line-height: 1.75;
            margin-bottom: 14px;
        }
        .ru-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--ru-radius-btn);
            border: 2px solid transparent;
            cursor: pointer;
            transition: all 0.22s ease;
            min-height: 46px;
            line-height: 1.4;
            text-align: center;
        }
        .ru-btn-primary {
            background-color: var(--ru-primary);
            color: #ffffff;
            border-color: var(--ru-primary);
        }
        .ru-btn-primary:hover {
            background-color: var(--ru-primary-hover);
            border-color: var(--ru-primary-hover);
            color: #ffffff;
            box-shadow: 0 6px 18px rgba(42, 107, 168, 0.3);
        }
        .ru-btn-gold {
            background-color: var(--ru-gold);
            color: var(--ru-deep);
            border-color: var(--ru-gold);
        }
        .ru-btn-gold:hover {
            background-color: var(--ru-gold-hover);
            border-color: var(--ru-gold-hover);
            color: #fff;
            box-shadow: 0 6px 18px rgba(200, 164, 93, 0.35);
        }
        .ru-btn-outline {
            background-color: transparent;
            color: var(--ru-primary);
            border-color: var(--ru-primary);
        }
        .ru-btn-outline:hover {
            background-color: var(--ru-light-blue);
            border-color: var(--ru-primary);
            color: var(--ru-primary-hover);
        }
        .ru-btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            min-height: 38px;
        }
        .ru-btn:focus-visible,
        .ru-nav-link:focus-visible,
        .ru-step-link:focus-visible,
        .ru-form-control:focus-visible {
            outline: 3px solid rgba(42, 107, 168, 0.35);
            outline-offset: 2px;
        }
        .ru-badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            background: var(--ru-light-blue);
            color: var(--ru-primary);
            border: 1px solid var(--ru-border-blue);
        }
        .ru-badge-gold {
            background: #fff8e8;
            color: #8a6a20;
            border-color: #e6d5a8;
        }

        /* ========== HEADER ========== */
        .ru-header {
            background: #ffffff;
            border-bottom: 1px solid var(--ru-border-blue);
            box-shadow: 0 2px 12px rgba(21, 58, 91, 0.04);
            position: sticky;
            top: 0;
            z-index: 1030;
        }
        .ru-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 14px 20px;
            max-width: 1180px;
            margin: 0 auto;
        }
        .ru-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--ru-deep);
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .ru-logo i {
            color: var(--ru-primary);
            font-size: 22px;
        }
        .ru-logo:hover {
            color: var(--ru-primary-hover);
        }
        .ru-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .ru-nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--ru-text);
            border-radius: 999px;
            transition: all 0.2s ease;
            min-height: 40px;
            white-space: nowrap;
        }
        .ru-nav-link:hover {
            color: var(--ru-primary);
            background: var(--ru-light-blue);
        }
        .ru-nav-link.active {
            color: #ffffff;
            background: var(--ru-primary);
        }
        .ru-nav-link.active:hover {
            color: #ffffff;
            background: var(--ru-primary-hover);
        }
        .ru-step-bar {
            background: var(--ru-cloud);
            border-bottom: 1px solid var(--ru-border-blue);
            padding: 10px 20px;
        }
        .ru-step-bar-inner {
            max-width: 1180px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 8px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--ru-border-blue) transparent;
        }
        .ru-step-bar-inner::-webkit-scrollbar {
            height: 4px;
        }
        .ru-step-bar-inner::-webkit-scrollbar-thumb {
            background: var(--ru-border-blue);
            border-radius: 999px;
        }
        .ru-step-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px 6px 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--ru-text-light);
            border-radius: 999px;
            background: transparent;
            transition: all 0.2s ease;
            white-space: nowrap;
            min-height: 36px;
            flex-shrink: 0;
        }
        .ru-step-link:hover {
            color: var(--ru-primary);
            background: var(--ru-light-blue);
        }
        .ru-step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #fff;
            border: 1px solid var(--ru-border-blue);
            font-size: 12px;
            font-weight: 700;
            color: var(--ru-text-light);
            flex-shrink: 0;
            transition: all 0.2s ease;
        }
        .ru-step-link.active {
            color: var(--ru-primary);
            background: var(--ru-light-blue);
        }
        .ru-step-link.active .ru-step-num {
            background: var(--ru-primary);
            border-color: var(--ru-primary);
            color: #fff;
        }
        .ru-step-link.completed {
            color: var(--ru-primary);
        }
        .ru-step-link.completed .ru-step-num {
            background: var(--ru-light-blue);
            border-color: var(--ru-primary);
            color: var(--ru-primary);
        }
        .ru-step-divider {
            width: 1px;
            height: 22px;
            background: var(--ru-border-blue);
            flex-shrink: 0;
        }

        /* ========== CATEGORY BANNER ========== */
        .ru-cat-banner {
            position: relative;
            padding: 72px 0 64px;
            background-image: url('/assets/images/e390719535fc6560.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .ru-cat-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(21, 58, 91, 0.88) 0%, rgba(42, 107, 168, 0.82) 55%, rgba(42, 107, 168, 0.68) 100%);
            z-index: 1;
        }
        .ru-cat-banner-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            padding: 0 20px;
        }
        .ru-cat-banner .ru-section-eyebrow {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(255, 255, 255, 0.25);
            color: #fff;
        }
        .ru-cat-banner h1 {
            font-size: 32px;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .ru-cat-banner p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.8;
            margin: 0;
            max-width: 640px;
        }

        /* ========== FILTER BAR ========== */
        .ru-filter-bar {
            background: #ffffff;
            border: var(--ru-border);
            border-radius: 14px;
            box-shadow: 0 2px 8px rgba(21, 58, 91, 0.04);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .ru-filter-count {
            font-size: 14px;
            font-weight: 600;
            color: var(--ru-text);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .ru-filter-count i {
            color: var(--ru-primary);
        }
        .ru-filter-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .ru-filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            border: 1px solid var(--ru-border-blue);
            background: var(--ru-cloud);
            color: var(--ru-text-light);
            cursor: default;
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .ru-filter-tag.active {
            background: var(--ru-primary);
            border-color: var(--ru-primary);
            color: #fff;
        }
        .ru-filter-tag:hover {
            border-color: var(--ru-primary);
            color: var(--ru-primary);
        }

        /* ========== CATEGORY LIST ========== */
        .ru-cat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .ru-cat-card .ru-card-img {
            height: 190px;
        }
        .ru-cat-card .ru-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 12px;
        }
        .ru-cat-more {
            text-align: center;
            margin-top: 28px;
        }

        /* ========== SCENE ENTRY ========== */
        .ru-scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .ru-scene-card {
            position: relative;
            border-radius: var(--ru-radius-card);
            overflow: hidden;
            min-height: 220px;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--ru-shadow-card);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            text-decoration: none;
        }
        .ru-scene-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--ru-shadow-card-hover);
        }
        .ru-scene-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }
        .ru-scene-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(21, 58, 91, 0.05) 0%, rgba(21, 58, 91, 0.72) 100%);
            z-index: 1;
        }
        .ru-scene-card-content {
            position: relative;
            z-index: 2;
            padding: 24px;
            width: 100%;
        }
        .ru-scene-card-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .ru-scene-card-content p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.82);
            margin: 0;
            line-height: 1.6;
        }
        .ru-scene-card-content i {
            display: inline-block;
            margin-top: 12px;
            color: var(--ru-gold);
            font-size: 16px;
        }

        /* ========== GUIDE STEPS ========== */
        .ru-guide-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: guide-step;
        }
        .ru-guide-item {
            background: #fff;
            border: var(--ru-border);
            border-radius: var(--ru-radius-card);
            padding: 24px 20px;
            box-shadow: var(--ru-shadow-card);
            position: relative;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .ru-guide-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--ru-shadow-card-hover);
        }
        .ru-guide-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--ru-primary);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
            flex-shrink: 0;
        }
        .ru-guide-item h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ru-deep);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .ru-guide-item p {
            font-size: 13px;
            color: var(--ru-text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== DATA GUARANTEE ========== */
        .ru-data-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .ru-data-card {
            background: #fff;
            border: var(--ru-border);
            border-radius: var(--ru-radius-card);
            padding: 26px 22px;
            box-shadow: var(--ru-shadow-card);
            text-align: left;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .ru-data-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--ru-shadow-card-hover);
        }
        .ru-data-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--ru-light-blue);
            color: var(--ru-primary);
            font-size: 20px;
            margin-bottom: 14px;
        }
        .ru-data-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ru-deep);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .ru-data-card p {
            font-size: 14px;
            color: var(--ru-text-light);
            line-height: 1.75;
            margin: 0;
        }

        /* ========== FAQ ========== */
        .ru-faq .accordion-item {
            border: var(--ru-border);
            border-radius: 12px;
            margin-bottom: 12px;
            background: #fff;
            box-shadow: 0 2px 8px rgba(21, 58, 91, 0.03);
            overflow: hidden;
        }
        .ru-faq .accordion-button {
            font-size: 15px;
            font-weight: 600;
            color: var(--ru-deep);
            padding: 16px 20px;
            background: #fff;
            border: none;
            box-shadow: none;
        }
        .ru-faq .accordion-button:not(.collapsed) {
            color: var(--ru-primary);
            background: var(--ru-cloud);
            box-shadow: none;
        }
        .ru-faq .accordion-button:focus {
            box-shadow: none;
            border-color: var(--ru-border-blue);
        }
        .ru-faq .accordion-button::after {
            background-size: 14px;
            width: 14px;
            height: 14px;
        }
        .ru-faq .accordion-body {
            font-size: 14px;
            color: var(--ru-text-light);
            line-height: 1.75;
            padding: 14px 20px 18px;
            background: #fff;
        }

        /* ========== CTA FORM ========== */
        .ru-cta-section {
            background: linear-gradient(135deg, var(--ru-deep) 0%, var(--ru-primary) 100%);
            padding: var(--ru-section-padding);
            border-radius: 0;
        }
        .ru-cta-card {
            background: #fff;
            border-radius: var(--ru-radius-card);
            padding: 36px 32px;
            box-shadow: 0 12px 40px rgba(21, 58, 91, 0.18);
        }
        .ru-cta-card h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--ru-deep);
            margin-bottom: 8px;
            line-height: 1.35;
        }
        .ru-cta-card p {
            font-size: 14px;
            color: var(--ru-text-light);
            line-height: 1.75;
            margin-bottom: 24px;
        }
        .ru-form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--ru-text);
            margin-bottom: 6px;
            display: block;
        }
        .ru-form-control {
            height: 48px;
            border: 1px solid var(--ru-border-blue);
            border-radius: 12px;
            padding: 10px 16px;
            font-size: 14px;
            color: var(--ru-text);
            background: #fff;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            width: 100%;
        }
        .ru-form-control:focus {
            border-color: var(--ru-primary);
            box-shadow: 0 0 0 4px rgba(42, 107, 168, 0.12);
            outline: none;
        }
        textarea.ru-form-control {
            height: auto;
            min-height: 110px;
            resize: vertical;
        }
        .ru-form-note {
            font-size: 12px;
            color: var(--ru-text-light);
            margin-top: 12px;
            line-height: 1.6;
        }

        /* ========== FOOTER ========== */
        .ru-footer {
            background: var(--ru-deep);
            color: rgba(255, 255, 255, 0.72);
            padding: 56px 0 28px;
            margin-top: 0;
        }
        .ru-footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .ru-footer-text {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.68);
            line-height: 1.7;
            margin: 0;
        }
        .ru-footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .ru-footer-links a {
            color: rgba(255, 255, 255, 0.72);
            font-size: 13px;
            transition: color 0.2s ease;
        }
        .ru-footer-links a:hover {
            color: #fff;
        }
        .ru-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin-top: 32px;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 992px) {
            .ru-cat-grid,
            .ru-scene-grid,
            .ru-data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .ru-guide-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .ru-section {
                padding: var(--ru-section-padding-md);
            }
            .ru-cat-banner h1 {
                font-size: 28px;
            }
        }
        @media (max-width: 768px) {
            .ru-header-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 12px 16px;
            }
            .ru-nav {
                width: 100%;
                gap: 4px;
            }
            .ru-nav-link {
                padding: 7px 14px;
                font-size: 13px;
                min-height: 36px;
                flex: 1;
                justify-content: center;
            }
            .ru-cat-grid,
            .ru-scene-grid,
            .ru-data-grid,
            .ru-guide-steps {
                grid-template-columns: 1fr;
            }
            .ru-section {
                padding: var(--ru-section-padding-sm);
            }
            .ru-section-title {
                font-size: 23px;
            }
            .ru-cat-banner {
                padding: 48px 0;
                min-height: 260px;
            }
            .ru-cat-banner h1 {
                font-size: 24px;
            }
            .ru-cat-banner p {
                font-size: 14px;
            }
            .ru-filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .ru-cta-card {
                padding: 26px 20px;
            }
            .ru-footer-bottom {
                flex-direction: column;
                gap: 6px;
            }
        }
        @media (max-width: 520px) {
            .ru-card-img {
                height: 160px;
            }
            .ru-scene-card {
                min-height: 180px;
            }
            .ru-section-title {
                font-size: 21px;
            }
            .ru-btn {
                width: 100%;
                justify-content: center;
            }
            .ru-step-bar-inner {
                gap: 4px;
            }
            .ru-step-link {
                font-size: 12px;
                padding: 5px 10px 5px 6px;
            }
            .ru-step-num {
                width: 24px;
                height: 24px;
                font-size: 11px;
            }
            .ru-step-divider {
                display: none;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}