.rg-hub {
            --rg-red: #e31b36;
            --rg-red-dark: #b90f28;
            --rg-navy: #102c50;
            --rg-blue: #1769e0;
            --rg-blue-soft: #eef5ff;
            --rg-ink: #14283e;
            --rg-text: #34495f;
            --rg-muted: #6f8193;
            --rg-line: #dce5ed;
            --rg-soft: #f5f7fa;
            --rg-warm: #fbfaf8;
            --rg-white: #fff;
            --rg-shadow: 0 16px 44px rgba(17, 41, 66, .09);
            --rg-site-header-offset: 0px;
            color: var(--rg-text);
            background: var(--rg-white);
            font-family: "Microsoft Yahei", "PingFang SC", "Helvetica Neue", Helvetica, Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            position: relative;
            isolation: isolate;
        }

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

        .rg-hub a {
            color: inherit;
            text-decoration: none;
        }

        .rg-hub button {
            font: inherit;
        }

        .rg-hub-skip {
            position: absolute;
            left: 24px;
            top: -80px;
            z-index: 100;
            padding: 10px 16px;
            color: #fff !important;
            background: var(--rg-navy);
            border-radius: 0 0 8px 8px;
            transition: top .2s ease;
        }

        .rg-hub-skip:focus {
            top: 0;
        }

        .rg-hub-hero {
            position: relative;
            overflow: hidden;
            color: #fff;
            background:
                radial-gradient(circle at 82% 25%, rgba(54, 137, 255, .36), transparent 28%),
                linear-gradient(118deg, #081d35 0%, #0d315d 60%, #104b7d 100%);
        }

        .rg-hub-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            opacity: .16;
            pointer-events: none;
            background-image:
                linear-gradient(rgba(255, 255, 255, .15) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, .15) 1px, transparent 1px);
            background-size: 48px 48px;
            -webkit-mask-image: linear-gradient(90deg, #000, transparent 90%);
            mask-image: linear-gradient(90deg, #000, transparent 90%);
        }

        .rg-hub-hero::after {
            content: "";
            position: absolute;
            right: -170px;
            bottom: -250px;
            width: 500px;
            height: 500px;
            border: 82px solid rgba(255, 255, 255, .055);
            border-radius: 50%;
        }

        .rg-hub-container {
            width: min(1240px, calc(100% - 64px));
            margin: 0 auto;
        }

        .rg-hub-hero-inner {
            position: relative;
            z-index: 1;
            padding: 30px 0 72px;
        }

        .rg-hub-breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            margin-bottom: 64px;
            color: rgba(255, 255, 255, .66);
            font-size: 13px;
        }

        .rg-hub-breadcrumb a:hover,
        .rg-hub-breadcrumb a:focus-visible {
            color: #fff;
        }

        .rg-hub-breadcrumb span:last-child {
            color: #fff;
        }

        .rg-hub-hero-grid {
            display: grid;
            grid-template-columns: minmax(0, 1.35fr) minmax(320px, .65fr);
            gap: 72px;
            align-items: end;
        }

        .rg-hub-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            margin-bottom: 18px;
            color: #a8d3ff;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .12em;
            text-transform: uppercase;
        }

        .rg-hub-eyebrow::before {
            content: "";
            width: 30px;
            height: 2px;
            background: var(--rg-red);
        }

        .rg-hub-hero h1 {
            margin: 0 0 24px;
            color: #fff;
            font-size: clamp(42px, 5vw, 68px);
            font-weight: 760;
            line-height: 1.08;
            letter-spacing: -.04em;
        }

        .rg-hub-hero-lead {
            max-width: 800px;
            margin: 0;
            color: rgba(255, 255, 255, .8);
            font-size: clamp(17px, 1.65vw, 21px);
            line-height: 1.75;
        }

        .rg-hub-hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 13px;
            margin-top: 34px;
        }

        .rg-hub-button {
            display: inline-flex;
            min-height: 48px;
            padding: 0 22px;
            align-items: center;
            justify-content: center;
            gap: 12px;
            border: 1px solid transparent;
            border-radius: 4px;
            font-size: 15px;
            font-weight: 700;
            transition: transform .2s ease, background .2s ease, border-color .2s ease;
        }

        .rg-hub-button:hover,
        .rg-hub-button:focus-visible {
            transform: translateY(-2px);
        }

        .rg-hub-button-primary {
            color: #fff !important;
            background: var(--rg-red);
        }

        .rg-hub-button-primary:hover,
        .rg-hub-button-primary:focus-visible {
            background: var(--rg-red-dark);
        }

        .rg-hub-button-secondary {
            color: #fff !important;
            border-color: rgba(255, 255, 255, .45);
            background: rgba(255, 255, 255, .06);
        }

        .rg-hub-button-secondary:hover,
        .rg-hub-button-secondary:focus-visible {
            border-color: rgba(255, 255, 255, .8);
            background: rgba(255, 255, 255, .11);
        }

        .rg-hub-hero-panel {
            padding: 28px;
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 12px;
            background: rgba(5, 29, 55, .42);
            box-shadow: 0 18px 60px rgba(0, 0, 0, .12);
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
        }

        .rg-hub-hero-panel-label {
            margin-bottom: 20px;
            color: #a8d3ff;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .08em;
        }

        .rg-hub-hero-metrics {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
        }

        .rg-hub-hero-metric {
            padding-right: 10px;
            border-right: 1px solid rgba(255, 255, 255, .16);
        }

        .rg-hub-hero-metric:last-child {
            padding-right: 0;
            border-right: 0;
        }

        .rg-hub-hero-metric strong {
            display: block;
            color: #fff;
            font-size: 28px;
            line-height: 1;
        }

        .rg-hub-hero-metric span {
            display: block;
            margin-top: 10px;
            color: rgba(255, 255, 255, .65);
            font-size: 12px;
        }

        .rg-hub-hero-panel p {
            margin: 24px 0 0;
            padding-top: 20px;
            color: rgba(255, 255, 255, .72);
            border-top: 1px solid rgba(255, 255, 255, .14);
            font-size: 13px;
            line-height: 1.7;
        }

        .rg-hub-jumpbar {
            position: sticky;
            top: var(--rg-site-header-offset);
            z-index: 30;
            border-bottom: 1px solid var(--rg-line);
            background: rgba(255, 255, 255, .96);
            box-shadow: 0 4px 18px rgba(22, 46, 73, .05);
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
        }

        .rg-hub-jumpbar-inner {
            display: flex;
            min-height: 58px;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
        }

        .rg-hub-jumpbar strong {
            color: var(--rg-ink);
            font-size: 15px;
        }

        .rg-hub-jumpbar nav {
            display: flex;
            align-items: center;
            gap: 34px;
        }

        .rg-hub-jumpbar nav a {
            position: relative;
            color: var(--rg-muted);
            font-size: 14px;
        }

        .rg-hub-jumpbar nav a::after {
            content: "";
            position: absolute;
            left: 0;
            right: 100%;
            bottom: -19px;
            height: 2px;
            background: var(--rg-red);
            transition: right .2s ease;
        }

        .rg-hub-jumpbar nav a:hover,
        .rg-hub-jumpbar nav a:focus-visible,
        .rg-hub-jumpbar nav a.is-active {
            color: var(--rg-ink);
        }

        .rg-hub-jumpbar nav a:hover::after,
        .rg-hub-jumpbar nav a:focus-visible::after,
        .rg-hub-jumpbar nav a.is-active::after {
            right: 0;
        }

        .rg-hub-layout {
            display: grid;
            grid-template-columns: 230px minmax(0, 1fr);
            gap: 52px;
            align-items: start;
            padding: 64px 0 96px;
        }

        .rg-hub-sidebar {
            position: sticky;
            top: calc(var(--rg-site-header-offset) + 78px);
            padding: 22px;
            border: 1px solid var(--rg-line);
            border-radius: 10px;
            background: var(--rg-white);
        }

        .rg-hub-sidebar-title {
            margin-bottom: 14px;
            color: var(--rg-ink);
            font-size: 15px;
            font-weight: 700;
        }

        .rg-hub-sidebar nav {
            display: grid;
            gap: 3px;
        }

        .rg-hub-sidebar a {
            display: grid;
            grid-template-columns: 25px 1fr;
            gap: 8px;
            padding: 9px 8px;
            color: var(--rg-muted);
            border-radius: 6px;
            font-size: 13px;
            line-height: 1.45;
        }

        .rg-hub-sidebar a span {
            color: #9aabba;
            font-size: 11px;
            font-weight: 700;
        }

        .rg-hub-sidebar a:hover,
        .rg-hub-sidebar a:focus-visible {
            color: var(--rg-red-dark);
            background: #fff2f4;
        }

        .rg-hub-sidebar-source {
            margin-top: 18px;
            padding-top: 18px;
            border-top: 1px solid var(--rg-line);
        }

        .rg-hub-sidebar-source a {
            display: flex;
            justify-content: space-between;
            color: var(--rg-ink);
            font-weight: 700;
        }

        .rg-hub-main {
            min-width: 0;
            scroll-margin-top: calc(var(--rg-site-header-offset) + 82px);
        }

        .rg-hub-section {
            scroll-margin-top: calc(var(--rg-site-header-offset) + 82px);
        }

        .rg-hub-section + .rg-hub-section {
            margin-top: 92px;
            padding-top: 4px;
        }

        .rg-hub-section-kicker {
            margin-bottom: 10px;
            color: var(--rg-red);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .1em;
            text-transform: uppercase;
        }

        .rg-hub-section-head {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0;
            align-items: end;
            margin-bottom: 34px;
        }

        .rg-hub-section h2 {
            margin: 0;
            color: var(--rg-ink);
            font-size: clamp(28px, 2.8vw, 36px);
            line-height: 1.25;
            letter-spacing: -.025em;
            white-space: nowrap;
        }

        .rg-hub-section-head p {
            margin: 0;
            color: var(--rg-muted);
            line-height: 1.8;
        }

        .rg-hub-topic-group + .rg-hub-topic-group {
            margin-top: 40px;
        }

        .rg-hub-topic-group-head {
            display: flex;
            margin-bottom: 16px;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .rg-hub-topic-group-head h3 {
            margin: 0;
            color: var(--rg-ink);
            font-size: 18px;
        }

        .rg-hub-topic-group-head span {
            color: var(--rg-muted);
            font-size: 12px;
        }

        .rg-hub-topic-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 16px;
        }

        .rg-hub-topic-card {
            position: relative;
            display: flex;
            min-height: 270px;
            padding: 26px;
            flex-direction: column;
            border: 1px solid var(--rg-line);
            border-radius: 10px;
            background: #fff;
            box-shadow: 0 8px 28px rgba(26, 55, 84, .04);
            transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
        }

        .rg-hub-topic-card::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            border-radius: 10px 0 0 10px;
            background: transparent;
            transition: background .2s ease;
        }

        .rg-hub-topic-card:hover,
        .rg-hub-topic-card:focus-visible {
            transform: translateY(-4px);
            border-color: #f4a8b3;
            box-shadow: var(--rg-shadow);
            outline: none;
        }

        .rg-hub-topic-card:hover::before,
        .rg-hub-topic-card:focus-visible::before {
            background: var(--rg-red);
        }

        .rg-hub-topic-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
        }

        .rg-hub-topic-number {
            color: var(--rg-red);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .08em;
        }

        .rg-hub-topic-badge {
            padding: 4px 8px;
            color: var(--rg-muted);
            border-radius: 4px;
            background: var(--rg-soft);
            font-size: 11px;
        }

        .rg-hub-topic-card h3 {
            margin: 24px 0 12px;
            color: var(--rg-ink);
            font-size: 22px;
            line-height: 1.35;
        }

        .rg-hub-topic-card p {
            margin: 0;
            color: var(--rg-muted);
            font-size: 14px;
            line-height: 1.75;
        }

        .rg-hub-topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 7px;
            margin-top: 18px;
        }

        .rg-hub-topic-tags span {
            padding: 4px 8px;
            color: #536b82;
            border: 1px solid #e2e9ef;
            border-radius: 999px;
            background: #fafcfd;
            font-size: 11px;
        }

        .rg-hub-topic-link {
            display: flex;
            margin-top: auto;
            padding-top: 22px;
            align-items: center;
            justify-content: space-between;
            color: var(--rg-red-dark);
            font-size: 14px;
            font-weight: 700;
        }

        .rg-hub-topic-link i {
            position: relative;
            display: block;
            width: 28px;
            height: 1px;
            background: var(--rg-red);
            transition: width .2s ease;
        }

        .rg-hub-topic-link i::after {
            content: "";
            position: absolute;
            right: 0;
            top: -3px;
            width: 7px;
            height: 7px;
            border-top: 1px solid var(--rg-red);
            border-right: 1px solid var(--rg-red);
            transform: rotate(45deg);
        }

        .rg-hub-topic-card:hover .rg-hub-topic-link i {
            width: 36px;
        }

        .rg-hub-choice-list {
            display: grid;
            border-top: 2px solid var(--rg-ink);
        }

        .rg-hub-choice-row {
            display: grid;
            grid-template-columns: 1.05fr .9fr 1.45fr;
            gap: 26px;
            padding: 22px 16px;
            align-items: center;
            border-bottom: 1px solid var(--rg-line);
        }

        .rg-hub-choice-row:hover {
            background: var(--rg-soft);
        }

        .rg-hub-choice-row strong {
            color: var(--rg-ink);
            font-size: 15px;
        }

        .rg-hub-choice-row a {
            color: var(--rg-red-dark);
            font-size: 14px;
            font-weight: 700;
        }

        .rg-hub-choice-row a:hover,
        .rg-hub-choice-row a:focus-visible {
            text-decoration: underline;
        }

        .rg-hub-choice-row span {
            color: var(--rg-muted);
            font-size: 13px;
        }

        .rg-hub-source-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 16px;
        }

        .rg-hub-source-card {
            display: grid;
            min-height: 190px;
            padding: 24px;
            grid-template-rows: auto auto 1fr auto;
            border: 1px solid var(--rg-line);
            border-radius: 10px;
            background: var(--rg-warm);
            transition: transform .2s ease, border-color .2s ease, background .2s ease;
        }

        .rg-hub-source-card:hover,
        .rg-hub-source-card:focus-visible {
            transform: translateY(-3px);
            border-color: #b5c7d8;
            background: #fff;
        }

        .rg-hub-source-card small {
            color: var(--rg-red);
            font-size: 11px;
            font-weight: 700;
            letter-spacing: .08em;
        }

        .rg-hub-source-card h3 {
            margin: 15px 0 8px;
            color: var(--rg-ink);
            font-size: 18px;
        }

        .rg-hub-source-card p {
            margin: 0;
            color: var(--rg-muted);
            font-size: 13px;
            line-height: 1.7;
        }

        .rg-hub-source-card b {
            margin-top: 18px;
            color: var(--rg-blue);
            font-size: 13px;
        }

        .rg-hub-boundary {
            display: grid;
            grid-template-columns: 40px 1fr;
            gap: 16px;
            margin-top: 28px;
            padding: 22px 24px;
            border: 1px solid #cdddf0;
            border-left: 3px solid var(--rg-blue);
            border-radius: 8px;
            background: var(--rg-blue-soft);
        }

        .rg-hub-boundary-mark {
            display: grid;
            width: 32px;
            height: 32px;
            place-items: center;
            color: var(--rg-blue);
            border-radius: 50%;
            background: #dceaff;
            font-size: 14px;
            font-weight: 700;
        }

        .rg-hub-boundary strong {
            display: block;
            margin-bottom: 5px;
            color: var(--rg-ink);
            font-size: 14px;
        }

        .rg-hub-boundary p {
            margin: 0;
            color: #526b83;
            font-size: 13px;
            line-height: 1.7;
        }

        .rg-hub-cta {
            position: relative;
            overflow: hidden;
            margin-top: 92px;
            padding: 46px 50px;
            color: #fff;
            border-radius: 12px;
            background: linear-gradient(115deg, #b90f28 0%, #e31b36 72%, #ec4960 100%);
        }

        .rg-hub-cta-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 40px;
            align-items: center;
        }

        .rg-hub-cta h2 {
            margin: 0 0 10px;
            color: #fff;
            font-size: clamp(26px, 3vw, 38px);
        }

        .rg-hub-cta p {
            max-width: 760px;
            margin: 0;
            color: rgba(255, 255, 255, .78);
        }

        .rg-hub-cta .rg-hub-button {
            color: var(--rg-red-dark) !important;
            background: #fff;
        }

        .rg-hub-consult {
            display: grid;
            grid-template-columns: auto minmax(0, 1fr) auto;
            gap: 22px;
            align-items: center;
            margin-top: 30px;
            padding: 26px 28px;
            border: 1px solid #dbe4ed;
            border-left: 3px solid var(--rg-red);
            border-radius: 10px;
            background: linear-gradient(105deg, #f5f8fc 0%, #fff 72%);
        }

        .rg-hub-consult-mark {
            display: grid;
            width: 48px;
            height: 48px;
            color: var(--rg-red);
            font-size: 13px;
            font-weight: 700;
            place-items: center;
            border-radius: 50%;
            background: #fff;
            box-shadow: 0 8px 22px rgba(18, 48, 77, .09);
        }

        .rg-hub-consult h3 {
            margin: 0 0 5px;
            color: var(--rg-ink);
            font-size: 20px;
        }

        .rg-hub-consult p {
            margin: 0;
            color: var(--rg-muted);
            font-size: 14px;
            line-height: 1.75;
        }

        .rg-hub-consult .rg-hub-button {
            min-width: 176px;
            white-space: nowrap;
        }

        @media (max-width: 1024px) {
            .rg-hub-hero-grid {
                grid-template-columns: 1fr;
                gap: 42px;
            }

            .rg-hub-hero-panel {
                max-width: 620px;
            }

            .rg-hub-layout {
                grid-template-columns: 1fr;
                gap: 0;
            }

            .rg-hub-sidebar {
                display: none;
            }
        }

        @media (max-width: 760px) {
            .rg-hub-container {
                width: min(100% - 36px, 1240px);
            }

            .rg-hub-hero-inner {
                padding: 24px 0 54px;
            }

            .rg-hub-breadcrumb {
                margin-bottom: 44px;
            }

            .rg-hub-hero h1 {
                font-size: 42px;
            }

            .rg-hub-hero-actions {
                align-items: stretch;
                flex-direction: column;
            }

            .rg-hub-button {
                width: 100%;
            }

            .rg-hub-jumpbar-inner {
                min-height: 54px;
                overflow-x: auto;
            }

            .rg-hub-jumpbar strong {
                display: none;
            }

            .rg-hub-jumpbar nav {
                width: max-content;
                gap: 26px;
            }

            .rg-hub-jumpbar nav a::after {
                bottom: -17px;
            }

            .rg-hub-layout {
                padding: 48px 0 70px;
            }

            .rg-hub-section + .rg-hub-section {
                margin-top: 68px;
            }

            .rg-hub-section-head {
                grid-template-columns: 1fr;
                gap: 14px;
                margin-bottom: 26px;
            }

            .rg-hub-section h2 {
                font-size: 30px;
                white-space: normal;
            }

            .rg-hub-topic-grid,
            .rg-hub-source-grid {
                grid-template-columns: 1fr;
            }

            .rg-hub-choice-row {
                grid-template-columns: 1fr;
                gap: 7px;
                padding: 18px 10px;
            }

            .rg-hub-cta {
                margin-top: 68px;
                padding: 32px 26px;
            }

            .rg-hub-cta-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .rg-hub-consult {
                grid-template-columns: auto minmax(0, 1fr);
                gap: 16px;
                padding: 22px 20px;
            }

            .rg-hub-consult .rg-hub-button {
                grid-column: 1 / -1;
                width: 100%;
            }

        }

        @media (max-width: 480px) {
            .rg-hub-hero-metrics {
                grid-template-columns: 1fr;
            }

            .rg-hub-hero-metric {
                display: flex;
                padding: 0 0 12px;
                align-items: baseline;
                gap: 12px;
                border-right: 0;
                border-bottom: 1px solid rgba(255, 255, 255, .14);
            }

            .rg-hub-hero-metric:last-child {
                padding-bottom: 0;
                border-bottom: 0;
            }

            .rg-hub-hero-metric span {
                margin-top: 0;
            }

            .rg-hub-topic-card {
                min-height: 0;
                padding: 22px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            .rg-hub *,
            .rg-hub *::before,
            .rg-hub *::after {
                scroll-behavior: auto !important;
                transition-duration: .01ms !important;
                animation-duration: .01ms !important;
                animation-iteration-count: 1 !important;
            }
        }

        @media print {
            .rg-hub-jumpbar,
            .rg-hub-sidebar {
                display: none !important;
            }

            .rg-hub-layout {
                display: block;
                padding-top: 30px;
            }

            .rg-hub-topic-card,
            .rg-hub-source-card {
                break-inside: avoid;
            }
        }

.rg-hub-guide-intro {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 1px;
            margin-bottom: 88px;
            overflow: hidden;
            border: 1px solid var(--rg-line);
            border-radius: 10px;
            background: var(--rg-line);
        }

        .rg-hub-guide-intro article {
            min-height: 172px;
            padding: 26px;
            background: #fff;
        }

        .rg-hub-guide-intro span {
            display: grid;
            width: 34px;
            height: 34px;
            margin-bottom: 24px;
            place-items: center;
            color: var(--rg-red);
            border-radius: 6px;
            background: #fff1f3;
            font-size: 12px;
            font-weight: 700;
        }

        .rg-hub-guide-intro h2 {
            margin: 0 0 8px;
            color: var(--rg-ink);
            font-size: 18px;
            letter-spacing: 0;
        }

        .rg-hub-guide-intro p {
            margin: 0;
            color: var(--rg-muted);
            font-size: 13px;
            line-height: 1.7;
        }

        .rg-hub-question-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 14px;
        }

        .rg-hub-question-card {
            display: grid;
            grid-template-columns: 42px 1fr;
            gap: 15px;
            padding: 22px;
            border: 1px solid var(--rg-line);
            border-radius: 9px;
            background: var(--rg-soft);
        }

        .rg-hub-question-card b {
            display: grid;
            width: 34px;
            height: 34px;
            place-items: center;
            color: var(--rg-blue);
            border-radius: 50%;
            background: #e1edff;
            font-size: 12px;
        }

        .rg-hub-question-card strong {
            display: block;
            margin-bottom: 5px;
            color: var(--rg-ink);
            font-size: 15px;
        }

        .rg-hub-question-card p {
            margin: 0;
            color: var(--rg-muted);
            font-size: 13px;
            line-height: 1.7;
        }

        .rg-hub-scene-card .rg-hub-topic-badge {
            color: #42627f;
            background: var(--rg-blue-soft);
        }

        .rg-hub-ap-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 14px;
        }

        .rg-hub-ap-card {
            position: relative;
            min-height: 210px;
            padding: 24px;
            border: 1px solid var(--rg-line);
            border-radius: 9px;
            background: #fff;
            transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
        }

        .rg-hub-ap-card:hover,
        .rg-hub-ap-card:focus-visible {
            transform: translateY(-3px);
            border-color: #f2a8b3;
            box-shadow: var(--rg-shadow);
            outline: none;
        }

        .rg-hub-ap-card small {
            color: var(--rg-red);
            font-size: 11px;
            font-weight: 700;
            letter-spacing: .08em;
        }

        .rg-hub-ap-card h3 {
            margin: 18px 0 9px;
            color: var(--rg-ink);
            font-size: 20px;
        }

        .rg-hub-ap-card p {
            margin: 0;
            color: var(--rg-muted);
            font-size: 13px;
            line-height: 1.75;
        }

        .rg-hub-ap-card b {
            position: absolute;
            left: 24px;
            bottom: 20px;
            color: var(--rg-red-dark);
            font-size: 13px;
        }

        .rg-hub-build-path {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 16px;
            counter-reset: build-step;
        }

        .rg-hub-build-step {
            position: relative;
            min-height: 250px;
            padding: 26px;
            overflow: hidden;
            color: #fff;
            border-radius: 10px;
            background: var(--rg-navy);
            counter-increment: build-step;
        }

        .rg-hub-build-step:nth-child(2) {
            background: #16446e;
        }

        .rg-hub-build-step:nth-child(3) {
            background: #1d5686;
        }

        .rg-hub-build-step::after {
            content: "0" counter(build-step);
            position: absolute;
            right: -8px;
            bottom: -42px;
            color: rgba(255, 255, 255, .07);
            font-size: 126px;
            font-weight: 800;
            line-height: 1;
        }

        .rg-hub-build-step span {
            position: relative;
            z-index: 1;
            color: #9fcbf5;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .1em;
        }

        .rg-hub-build-step h3 {
            position: relative;
            z-index: 1;
            margin: 24px 0 12px;
            color: #fff;
            font-size: 22px;
        }

        .rg-hub-build-step p {
            position: relative;
            z-index: 1;
            margin: 0;
            color: rgba(255, 255, 255, .72);
            font-size: 13px;
            line-height: 1.8;
        }

        .rg-hub-build-link {
            display: inline-flex;
            margin-top: 22px;
            align-items: center;
            gap: 8px;
            color: var(--rg-blue);
            font-size: 14px;
            font-weight: 700;
        }

        .rg-hub-build-link:hover,
        .rg-hub-build-link:focus-visible {
            text-decoration: underline;
        }

        .rg-hub-faq {
            border-top: 2px solid var(--rg-ink);
        }

        .rg-hub-faq details {
            border-bottom: 1px solid var(--rg-line);
        }

        .rg-hub-faq summary {
            position: relative;
            padding: 22px 46px 22px 4px;
            color: var(--rg-ink);
            font-size: 16px;
            font-weight: 700;
            list-style: none;
            cursor: pointer;
        }

        .rg-hub-faq summary::-webkit-details-marker {
            display: none;
        }

        .rg-hub-faq summary::before,
        .rg-hub-faq summary::after {
            content: "";
            position: absolute;
            right: 12px;
            top: 50%;
            width: 14px;
            height: 2px;
            background: var(--rg-red);
            transform: translateY(-50%);
        }

        .rg-hub-faq summary::after {
            transform: translateY(-50%) rotate(90deg);
            transition: transform .2s ease;
        }

        .rg-hub-faq details[open] summary::after {
            transform: translateY(-50%) rotate(0);
        }

        .rg-hub-faq-answer {
            max-width: 820px;
            padding: 0 44px 22px 4px;
            color: var(--rg-muted);
            font-size: 14px;
            line-height: 1.8;
        }

        .rg-hub-faq-answer p {
            margin: 0;
        }

        .rg-hub-faq-answer a {
            color: var(--rg-blue);
            font-weight: 700;
        }

        .rg-hub-faq-answer a:hover,
        .rg-hub-faq-answer a:focus-visible {
            text-decoration: underline;
        }

        @media (max-width: 880px) {
            .rg-hub-guide-intro,
            .rg-hub-build-path {
                grid-template-columns: 1fr;
            }

            .rg-hub-guide-intro {
                gap: 1px;
            }
        }

        @media (max-width: 680px) {
            .rg-hub-question-grid,
            .rg-hub-ap-grid {
                grid-template-columns: 1fr;
            }

            .rg-hub-guide-intro {
                margin-bottom: 66px;
            }
        }

/* Ruijie website-aligned visual layer: scoped to the guide body only. */
        .rg-hub {
            --rg-red: #e60039;
            --rg-red-dark: #c70032;
            --rg-navy: #292929;
            --rg-blue: #01a0e8;
            --rg-blue-soft: #f3f8fb;
            --rg-ink: #292929;
            --rg-text: #515254;
            --rg-muted: #6a6b6d;
            --rg-line: #e5e5e5;
            --rg-soft: #f5f6f8;
            --rg-warm: #fafafa;
            --rg-shadow: 0 8px 22px rgba(0, 0, 0, .06);
            color: var(--rg-text);
            background: #fff;
            font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
            font-size: 14px;
            line-height: 1.7;
        }

        .rg-hub-container {
            width: min(1080px, calc(100% - 64px));
        }

        .rg-hub-skip {
            color: #fff !important;
            background: var(--rg-red);
            border-radius: 0 0 4px 4px;
        }

        .rg-hub-hero {
            color: var(--rg-ink);
            border-bottom: 1px solid var(--rg-line);
            background: linear-gradient(100deg, #f4f5f7 0%, #fff 58%, #eef1f4 100%);
        }

        .rg-hub-hero::before,
        .rg-hub-hero::after {
            display: none;
        }

        .rg-hub-hero-inner {
            padding: 22px 0 56px;
        }

        .rg-hub-breadcrumb {
            margin-bottom: 42px;
            color: #8a8b8d;
            font-size: 13px;
        }

        .rg-hub-breadcrumb a:hover,
        .rg-hub-breadcrumb a:focus-visible,
        .rg-hub-breadcrumb span:last-child {
            color: var(--rg-ink);
        }

        .rg-hub-hero-grid {
            grid-template-columns: minmax(0, 1.32fr) minmax(300px, .68fr);
            gap: 64px;
            align-items: center;
        }

        .rg-hub-eyebrow {
            margin-bottom: 16px;
            color: var(--rg-red);
            font-size: 13px;
            letter-spacing: .04em;
        }

        .rg-hub-eyebrow::before {
            width: 26px;
            background: var(--rg-red);
        }

        .rg-hub-hero h1 {
            margin-bottom: 18px;
            color: var(--rg-ink);
            font-size: clamp(40px, 4vw, 54px);
            font-weight: 700;
            line-height: 1.16;
            letter-spacing: -.025em;
        }

        .rg-hub-hero-lead {
            max-width: 680px;
            color: #515254;
            font-size: 18px;
            line-height: 1.8;
        }

        .rg-hub-hero-actions {
            gap: 12px;
            margin-top: 28px;
        }

        .rg-hub-button {
            min-height: 42px;
            padding: 0 20px;
            gap: 10px;
            border-radius: 4px;
            font-size: 16px;
            font-weight: 400;
            transition: color .2s ease, background-color .2s ease, border-color .2s ease;
        }

        .rg-hub-button:hover,
        .rg-hub-button:focus-visible {
            transform: none;
        }

        .rg-hub-button:focus-visible,
        .rg-hub a:focus-visible,
        .rg-hub summary:focus-visible {
            outline: 2px solid var(--rg-red);
            outline-offset: 3px;
        }

        .rg-hub-button-primary {
            color: #fff !important;
            border-color: var(--rg-red);
            background: var(--rg-red);
        }

        .rg-hub-button-primary:hover,
        .rg-hub-button-primary:focus-visible {
            border-color: var(--rg-red-dark);
            background: var(--rg-red-dark);
        }

        .rg-hub-button-secondary {
            color: var(--rg-ink) !important;
            border-color: #bfc1c4;
            background: #fff;
        }

        .rg-hub-button-secondary:hover,
        .rg-hub-button-secondary:focus-visible {
            color: var(--rg-red) !important;
            border-color: var(--rg-red);
            background: #fff;
        }

        .rg-hub-hero-panel {
            padding: 26px 28px;
            border: 1px solid var(--rg-line);
            border-top: 3px solid var(--rg-red);
            border-radius: 4px;
            background: rgba(255, 255, 255, .9);
            box-shadow: none;
            -webkit-backdrop-filter: none;
            backdrop-filter: none;
        }

        .rg-hub-hero-panel-label {
            margin-bottom: 18px;
            color: var(--rg-muted);
            font-size: 13px;
            letter-spacing: 0;
        }

        .rg-hub-hero-metrics {
            gap: 16px;
        }

        .rg-hub-hero-metric {
            border-right-color: var(--rg-line);
        }

        .rg-hub-hero-metric strong {
            color: var(--rg-red);
            font-size: 30px;
            font-weight: 400;
        }

        .rg-hub-hero-metric span {
            color: var(--rg-muted);
            font-size: 12px;
        }

        .rg-hub-hero-panel p {
            margin-top: 20px;
            padding-top: 18px;
            color: var(--rg-muted);
            border-top-color: var(--rg-line);
            font-size: 13px;
        }

        .rg-hub-jumpbar {
            border-bottom-color: var(--rg-line);
            background: #fff;
            box-shadow: none;
            -webkit-backdrop-filter: none;
            backdrop-filter: none;
        }

        .rg-hub-jumpbar-inner {
            min-height: 65px;
            scrollbar-width: none;
        }

        .rg-hub-jumpbar-inner::-webkit-scrollbar {
            display: none;
        }

        .rg-hub-jumpbar strong {
            color: var(--rg-ink);
            font-size: 16px;
            font-weight: 400;
        }

        .rg-hub-jumpbar nav {
            gap: 28px;
        }

        .rg-hub-jumpbar nav a {
            display: flex;
            min-height: 65px;
            align-items: center;
            color: var(--rg-ink);
            font-size: 14px;
            white-space: nowrap;
        }

        .rg-hub-jumpbar nav a::after {
            bottom: 0;
            height: 2px;
            background: var(--rg-red);
        }

        .rg-hub-jumpbar nav a:hover,
        .rg-hub-jumpbar nav a:focus-visible,
        .rg-hub-jumpbar nav a.is-active {
            color: var(--rg-red);
        }

        .rg-hub-layout {
            grid-template-columns: 200px minmax(0, 1fr);
            gap: 44px;
            padding: 60px 0 96px;
        }

        .rg-hub-sidebar {
            top: calc(var(--rg-site-header-offset) + 85px);
            padding: 0 22px 0 0;
            border: 0;
            border-right: 1px solid var(--rg-line);
            border-radius: 0;
            background: transparent;
        }

        .rg-hub-sidebar-title {
            margin-bottom: 15px;
            color: var(--rg-ink);
            font-size: 16px;
            font-weight: 400;
        }

        .rg-hub-sidebar nav {
            gap: 0;
        }

        .rg-hub-sidebar a {
            grid-template-columns: 24px 1fr;
            padding: 9px 0;
            color: var(--rg-muted);
            border-radius: 0;
            font-size: 13px;
        }

        .rg-hub-sidebar a span {
            color: #a2a3a5;
            font-weight: 400;
        }

        .rg-hub-sidebar a:hover,
        .rg-hub-sidebar a:focus-visible {
            color: var(--rg-red);
            background: transparent;
        }

        .rg-hub-sidebar-source {
            margin-top: 16px;
            padding-top: 16px;
            border-top-color: var(--rg-line);
        }

        .rg-hub-sidebar-source a {
            color: var(--rg-ink);
            font-weight: 400;
        }

        .rg-hub-sidebar-source a:hover,
        .rg-hub-sidebar-source a:focus-visible {
            color: var(--rg-red);
        }

        .rg-hub-main,
        .rg-hub-section {
            scroll-margin-top: calc(var(--rg-site-header-offset) + 88px);
        }

        .rg-hub-guide-intro {
            gap: 0;
            margin-bottom: 76px;
            overflow: visible;
            border: 1px solid var(--rg-line);
            border-radius: 0;
            background: #fff;
        }

        .rg-hub-guide-intro article {
            min-height: 154px;
            padding: 24px;
            border-right: 1px solid var(--rg-line);
            background: #fff;
        }

        .rg-hub-guide-intro article:last-child {
            border-right: 0;
        }

        .rg-hub-guide-intro span {
            display: block;
            width: auto;
            height: auto;
            margin-bottom: 17px;
            color: var(--rg-red);
            border-radius: 0;
            background: transparent;
            font-size: 13px;
            font-weight: 400;
        }

        .rg-hub-guide-intro h2 {
            margin-bottom: 7px;
            color: var(--rg-ink);
            font-size: 18px;
            font-weight: 400;
        }

        .rg-hub-guide-intro p {
            color: var(--rg-muted);
            font-size: 13px;
        }

        .rg-hub-section + .rg-hub-section {
            margin-top: 80px;
        }

        .rg-hub-section-kicker {
            margin-bottom: 8px;
            color: var(--rg-red);
            font-size: 12px;
            font-weight: 400;
            letter-spacing: .08em;
        }

        .rg-hub-section-head {
            margin-bottom: 28px;
        }

        .rg-hub-section h2 {
            color: var(--rg-ink);
            font-size: clamp(26px, 2.4vw, 32px);
            font-weight: 400;
            line-height: 1.35;
            letter-spacing: 0;
        }

        .rg-hub-question-grid,
        .rg-hub-topic-grid,
        .rg-hub-ap-grid,
        .rg-hub-source-grid {
            gap: 14px;
        }

        .rg-hub-question-card {
            min-height: 136px;
            padding: 20px;
            border-color: var(--rg-line);
            border-radius: 0;
            background: #fff;
        }

        .rg-hub-question-card b {
            width: 32px;
            height: 32px;
            color: var(--rg-red);
            border: 1px solid rgba(230, 0, 57, .35);
            border-radius: 2px;
            background: #fff;
            font-weight: 400;
        }

        .rg-hub-question-card strong {
            color: var(--rg-ink);
            font-size: 15px;
            font-weight: 400;
        }

        .rg-hub-question-card p {
            color: var(--rg-muted);
            font-size: 13px;
        }

        .rg-hub-topic-card {
            min-height: 252px;
            padding: 24px;
            border-color: var(--rg-line);
            border-radius: 0;
            background: #fff;
            box-shadow: none;
            transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
        }

        .rg-hub-topic-card::before {
            width: 2px;
            border-radius: 0;
        }

        .rg-hub-topic-card:hover,
        .rg-hub-topic-card:focus-visible {
            transform: translateY(-2px);
            border-color: var(--rg-red);
            box-shadow: var(--rg-shadow);
        }

        .rg-hub-topic-number {
            color: var(--rg-red);
            font-weight: 400;
        }

        .rg-hub-topic-badge,
        .rg-hub-scene-card .rg-hub-topic-badge {
            color: var(--rg-muted);
            border-radius: 2px;
            background: var(--rg-soft);
        }

        .rg-hub-topic-card h3 {
            margin: 20px 0 10px;
            color: var(--rg-ink);
            font-size: 20px;
            font-weight: 400;
        }

        .rg-hub-topic-card p {
            color: var(--rg-muted);
            font-size: 14px;
        }

        .rg-hub-topic-tags {
            gap: 6px;
            margin-top: 16px;
        }

        .rg-hub-topic-tags span {
            color: var(--rg-muted);
            border: 0;
            border-radius: 2px;
            background: var(--rg-soft);
        }

        .rg-hub-topic-link {
            color: var(--rg-red);
            font-weight: 400;
        }

        .rg-hub-consult {
            margin-top: 24px;
            padding: 24px 26px;
            grid-template-columns: minmax(0, 1fr) auto;
            border: 0;
            border-left: 3px solid var(--rg-red);
            border-radius: 0;
            background: var(--rg-soft);
        }

        .rg-hub-consult-mark {
            width: 46px;
            height: 46px;
            color: #fff;
            border-radius: 2px;
            background: var(--rg-red);
            box-shadow: none;
            font-weight: 400;
        }

        .rg-hub-consult h3 {
            color: var(--rg-ink);
            font-size: 19px;
            font-weight: 400;
        }

        .rg-hub-consult p {
            color: var(--rg-muted);
        }

        .rg-hub-ap-card {
            display: flex;
            min-height: 194px;
            padding: 24px;
            flex-direction: column;
            border-color: var(--rg-line);
            border-radius: 0;
            background: #fff;
            transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
        }

        .rg-hub-ap-card:hover,
        .rg-hub-ap-card:focus-visible {
            transform: translateY(-2px);
            border-color: var(--rg-red);
            box-shadow: var(--rg-shadow);
        }

        .rg-hub-ap-card small {
            color: var(--rg-red);
            font-weight: 400;
        }

        .rg-hub-ap-card h3 {
            margin: 15px 0 8px;
            color: var(--rg-ink);
            font-size: 19px;
            font-weight: 400;
        }

        .rg-hub-ap-card p {
            margin-bottom: 0;
            color: var(--rg-muted);
        }

        .rg-hub-ap-card b {
            position: static;
            display: block;
            margin-top: auto;
            padding-top: 18px;
            color: var(--rg-red);
            font-weight: 400;
        }

        .rg-hub-boundary {
            margin-top: 24px;
            padding: 20px 22px;
            grid-template-columns: 1fr;
            gap: 0;
            border: 0;
            border-left: 3px solid var(--rg-red);
            border-radius: 0;
            background: var(--rg-soft);
        }

        .rg-hub-boundary-mark {
            color: #fff;
            border-radius: 2px;
            background: var(--rg-red);
            font-weight: 400;
        }

        .rg-hub-boundary strong {
            color: var(--rg-ink);
            font-weight: 400;
        }

        .rg-hub-boundary p {
            color: var(--rg-muted);
        }

        .rg-hub-build-path {
            gap: 14px;
        }

        .rg-hub-build-step,
        .rg-hub-build-step:nth-child(2),
        .rg-hub-build-step:nth-child(3) {
            min-height: 220px;
            padding: 24px;
            color: var(--rg-ink);
            border: 1px solid var(--rg-line);
            border-top: 3px solid var(--rg-red);
            border-radius: 0;
            background: var(--rg-soft);
        }

        .rg-hub-build-step::after {
            right: 4px;
            bottom: -30px;
            color: rgba(230, 0, 57, .06);
            font-size: 112px;
        }

        .rg-hub-build-step span {
            color: var(--rg-red);
            font-weight: 400;
            letter-spacing: .06em;
        }

        .rg-hub-build-step h3 {
            margin: 22px 0 10px;
            color: var(--rg-ink);
            font-size: 20px;
            font-weight: 400;
        }

        .rg-hub-build-step p {
            color: var(--rg-muted);
        }

        .rg-hub-build-link {
            color: var(--rg-blue);
            font-weight: 400;
        }

        .rg-hub-faq {
            border-top: 1px solid var(--rg-ink);
        }

        .rg-hub-faq summary {
            padding: 20px 44px 20px 4px;
            color: var(--rg-ink);
            font-size: 16px;
            font-weight: 400;
        }

        .rg-hub-faq-answer {
            color: var(--rg-muted);
        }

        .rg-hub-faq-answer a {
            color: var(--rg-blue);
            font-weight: 400;
        }

        .rg-hub-source-card {
            min-height: 184px;
            padding: 22px;
            border-color: var(--rg-line);
            border-radius: 0;
            background: #fff;
        }

        .rg-hub-source-card:hover,
        .rg-hub-source-card:focus-visible {
            transform: translateY(-2px);
            border-color: var(--rg-red);
            background: #fff;
            box-shadow: var(--rg-shadow);
        }

        .rg-hub-source-card small {
            color: var(--rg-red);
            font-weight: 400;
        }

        .rg-hub-source-card h3 {
            color: var(--rg-ink);
            font-size: 18px;
            font-weight: 400;
        }

        .rg-hub-source-card p {
            color: var(--rg-muted);
        }

        .rg-hub-source-card b {
            color: var(--rg-blue);
            font-weight: 400;
        }

        .rg-hub-cta {
            margin-top: 80px;
            padding: 40px 42px;
            border-radius: 4px;
            background: var(--rg-red);
        }

        .rg-hub-cta h2 {
            color: #fff;
            font-size: 30px;
            font-weight: 400;
        }

        .rg-hub-cta p {
            color: rgba(255, 255, 255, .84);
            font-size: 14px;
        }

        .rg-hub-cta .rg-hub-button {
            color: var(--rg-red) !important;
            border-color: #fff;
            background: #fff;
        }

        .rg-hub-cta .rg-hub-button:hover,
        .rg-hub-cta .rg-hub-button:focus-visible {
            color: var(--rg-red-dark) !important;
            border-color: #f2f2f2;
            background: #f2f2f2;
        }

        @media (max-width: 1024px) {
            .rg-hub-container {
                width: min(100% - 48px, 1080px);
            }

            .rg-hub-hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .rg-hub-hero-panel {
                max-width: 620px;
            }

            .rg-hub-layout {
                grid-template-columns: 1fr;
                gap: 0;
                padding-top: 52px;
            }
        }

        @media (max-width: 880px) {
            .rg-hub-guide-intro article {
                min-height: 0;
                border-right: 0;
                border-bottom: 1px solid var(--rg-line);
            }

            .rg-hub-guide-intro article:last-child {
                border-bottom: 0;
            }
        }

        @media (max-width: 760px) {
            .rg-hub-container {
                width: min(100% - 32px, 1080px);
            }

            .rg-hub-hero-inner {
                padding: 18px 0 44px;
            }

            .rg-hub-breadcrumb {
                margin-bottom: 32px;
            }

            .rg-hub-hero h1 {
                font-size: 38px;
            }

            .rg-hub-hero-lead {
                font-size: 16px;
            }

            .rg-hub-hero-panel {
                padding: 22px;
            }

            .rg-hub-jumpbar-inner,
            .rg-hub-jumpbar nav a {
                min-height: 54px;
            }

            .rg-hub-jumpbar nav a::after {
                bottom: 0;
            }

            .rg-hub-layout {
                padding: 44px 0 68px;
            }

            .rg-hub-guide-intro {
                margin-bottom: 60px;
            }

            .rg-hub-section + .rg-hub-section {
                margin-top: 60px;
            }

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

            .rg-hub-topic-card,
            .rg-hub-ap-card,
            .rg-hub-source-card {
                min-height: 0;
            }

            .rg-hub-consult {
                padding: 20px;
            }

            .rg-hub-cta {
                margin-top: 60px;
                padding: 30px 24px;
            }

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

        @media (max-width: 480px) {
            .rg-hub-hero-metric {
                border-bottom-color: var(--rg-line);
            }

            .rg-hub-question-card {
                grid-template-columns: 34px 1fr;
                gap: 12px;
                padding: 18px;
            }

            .rg-hub-topic-card,
            .rg-hub-ap-card,
            .rg-hub-source-card {
                padding: 20px;
            }

            .rg-hub-consult-mark {
                width: 42px;
                height: 42px;
            }
        }