/* roulang page: index */
:root {
            --brand-primary: #1E6FD9;
            --brand-dark: #0E3A66;
            --brand-primary-hover: #1458A6;
            --brand-primary-active: #0F4A8A;
            --brand-green: #2FA36B;
            --brand-amber: #E8972A;
            --brand-error: #D9534F;
            --bg-page: #F5F8FC;
            --bg-card: #FFFFFF;
            --text-title: #142A3A;
            --text-body: #33475B;
            --text-helper: #62748A;
            --text-on-dark: #FFFFFF;
            --text-on-dark-sub: #E6EEF7;
            --border-line: #D6E1EC;
            --radius-md: 8px;
            --radius-lg: 16px;
            --shadow-card: 0 4px 20px rgba(16, 42, 74, 0.06);
            --shadow-hover: 0 8px 32px rgba(16, 42, 74, 0.12);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --section-space: 96px;
            --section-space-md: 64px;
            --section-space-sm: 48px;
            --header-height: 76px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            background-color: var(--bg-page);
            color: var(--text-body);
            font-size: 1rem;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

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

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

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

        button {
            font-family: inherit;
        }

        input,
        textarea {
            font-family: inherit;
        }

        section[id] {
            scroll-margin-top: calc(var(--header-height) + 14px);
        }

        .container {
            max-width: 1200px;
            padding-left: 32px;
            padding-right: 32px;
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
        }

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

        @media (max-width: 992px) {
            .section {
                padding: var(--section-space-md) 0;
            }
        }

        @media (max-width: 576px) {
            .section {
                padding: var(--section-space-sm) 0;
            }
        }

        .bg-white {
            background-color: var(--bg-card);
        }

        .section-head {
            margin-bottom: 40px;
        }

        .section-tag {
            display: inline-block;
            padding: 4px 12px;
            font-size: 0.8125rem;
            font-weight: 600;
            color: var(--brand-primary);
            background: rgba(30, 111, 217, 0.08);
            border-radius: 6px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .section-head h2 {
            font-size: clamp(1.5rem, 2.5vw, 2.2rem);
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.3;
            margin: 0 0 12px;
        }

        .section-head .lead {
            font-size: 1rem;
            color: var(--text-helper);
            margin: 0;
        }

        .btn {
            border-radius: var(--radius-md);
            font-weight: 600;
            transition: all 0.25s ease;
        }

        .btn:focus-visible {
            box-shadow: 0 0 0 3px rgba(30, 111, 217, 0.35);
            outline: none;
        }

        .btn-primary {
            --bs-btn-bg: var(--brand-primary);
            --bs-btn-border-color: var(--brand-primary);
            --bs-btn-hover-bg: var(--brand-primary-hover);
            --bs-btn-hover-border-color: var(--brand-primary-hover);
            --bs-btn-active-bg: var(--brand-primary-active);
            --bs-btn-active-border-color: var(--brand-primary-active);
            --bs-btn-disabled-bg: #90B8E8;
            --bs-btn-disabled-border-color: #90B8E8;
            --bs-btn-color: #fff;
            --bs-btn-hover-color: #fff;
            --bs-btn-active-color: #fff;
            border-radius: var(--radius-md);
            padding: 0.625rem 1.5rem;
        }

        .btn-outline-primary {
            --bs-btn-color: var(--brand-primary);
            --bs-btn-border-color: var(--brand-primary);
            --bs-btn-hover-bg: rgba(30, 111, 217, 0.06);
            --bs-btn-hover-color: var(--brand-primary-hover);
            --bs-btn-hover-border-color: var(--brand-primary-hover);
            --bs-btn-active-bg: rgba(30, 111, 217, 0.1);
            --bs-btn-active-color: var(--brand-primary-active);
            --bs-btn-active-border-color: var(--brand-primary-active);
            border-radius: var(--radius-md);
            padding: 0.625rem 1.5rem;
            border-width: 1.5px;
        }

        .btn-lg {
            height: 52px;
            padding: 0.75rem 2rem;
            font-size: 1rem;
        }

        .btn-sm {
            height: 40px;
            padding: 0.375rem 1.25rem;
            font-size: 0.875rem;
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 0.9375rem;
            color: var(--brand-primary);
            background: none;
            border: none;
            padding: 6px 0;
            transition: color 0.2s ease;
        }

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

        .btn-text i {
            transition: transform 0.2s ease;
        }

        .btn-text:hover i {
            transform: translateX(4px);
        }

        /* Header Nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: 0 1px 0 rgba(16, 42, 74, 0.04);
            transition: box-shadow 0.3s ease, background 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(16, 42, 74, 0.08);
            background: rgba(255, 255, 255, 0.98);
        }

        .site-header .navbar {
            padding: 14px 0;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-title);
            padding: 0;
            margin: 0;
        }

        .navbar-brand:hover {
            color: var(--text-title);
        }

        .brand-icon {
            display: inline-flex;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--brand-primary);
            color: #fff;
            align-items: center;
            justify-content: center;
            font-size: 1.125rem;
            font-weight: 700;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(30, 111, 217, 0.25);
        }

        .navbar .nav-link {
            color: var(--text-body) !important;
            font-weight: 500;
            font-size: 0.9375rem;
            padding: 8px 16px !important;
            border-radius: var(--radius-md);
            transition: color 0.2s ease, background 0.2s ease;
            position: relative;
        }

        .navbar .nav-link:hover {
            color: var(--brand-primary) !important;
            background: rgba(30, 111, 217, 0.04);
        }

        .navbar .nav-link.active {
            color: var(--brand-primary) !important;
            background: rgba(30, 111, 217, 0.07);
            font-weight: 600;
        }

        .nav-cta {
            margin-left: 16px;
        }

        .navbar-toggler {
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            padding: 8px 12px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(30, 111, 217, 0.15);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%23142A3A' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: #fff;
                border-radius: var(--radius-lg);
                box-shadow: var(--shadow-card);
                padding: 16px;
                margin-top: 12px;
                border: 1px solid var(--border-line);
            }

            .navbar .nav-link {
                line-height: 48px;
                padding: 0 16px !important;
                font-size: 1rem;
            }

            .nav-cta {
                margin: 16px 0 0;
                width: 100%;
            }
        }

        /* Hero */
        .hero {
            position: relative;
            padding: calc(var(--header-height) + 90px) 0 90px;
            background: url('/assets/images/backpic/back-1.webp') no-repeat center center/cover;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg, rgba(245, 248, 252, 0.97) 0%, rgba(245, 248, 252, 0.92) 45%, rgba(245, 248, 252, 0.78) 75%, rgba(245, 248, 252, 0.62) 100%);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(30, 111, 217, 0.08);
            border-radius: 100px;
            font-size: 0.8125rem;
            font-weight: 600;
            color: var(--brand-primary);
            margin-bottom: 24px;
        }

        .hero-tag i {
            font-size: 0.75rem;
        }

        .hero h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-title);
            margin: 0 0 16px;
            max-width: 680px;
        }

        .hero-sub {
            font-size: 1.0625rem;
            color: var(--text-helper);
            margin: 0 0 32px;
            max-width: 480px;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 36px;
        }

        .hero-trust {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
        }

        .hero-trust li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-body);
        }

        .hero-trust i {
            color: var(--brand-green);
        }

        .hero-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            position: relative;
        }

        .hero-visual img {
            width: 100%;
            object-fit: cover;
            min-height: 320px;
        }

        @media (max-width: 991.98px) {
            .hero {
                padding: calc(var(--header-height) + 40px) 0 60px;
                text-align: center;
            }

            .hero h1,
            .hero-sub {
                margin-left: auto;
                margin-right: auto;
            }

            .hero-btns {
                justify-content: center;
            }

            .hero-trust {
                justify-content: center;
            }
        }

        @media (max-width: 576px) {
            .hero h1 {
                font-size: 1.75rem;
            }

            .hero-btns .btn {
                width: 100%;
            }

            .hero-trust {
                gap: 10px 20px;
                justify-content: flex-start;
            }
        }

        /* Pain Section */
        .pain-section {
            background: var(--bg-page);
        }

        .pain-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            height: 100%;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            border: 1px solid rgba(214, 225, 236, 0.5);
        }

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

        .pain-icon {
            display: inline-flex;
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: rgba(30, 111, 217, 0.08);
            color: var(--brand-primary);
            align-items: center;
            justify-content: center;
            font-size: 1.125rem;
            margin-bottom: 18px;
        }

        .pain-card h3 {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 10px;
        }

        .pain-card p {
            font-size: 0.9375rem;
            color: var(--text-helper);
            margin: 0;
            line-height: 1.6;
        }

        /* Solution Section */
        .solution-section {
            background: var(--bg-card);
        }

        .solution-card-main {
            background: var(--bg-page);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            height: 100%;
            border: 1px solid rgba(214, 225, 236, 0.6);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .solution-card-main:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .solution-main-content {
            padding: 36px;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .solution-main-img {
            height: 100%;
            min-height: 320px;
            background: linear-gradient(135deg, rgba(14, 58, 102, 0.08), rgba(30, 111, 217, 0.05));
        }

        .solution-main-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }

        .solution-icon {
            display: inline-flex;
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--brand-primary);
            color: #fff;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 20px;
            box-shadow: 0 4px 12px rgba(30, 111, 217, 0.25);
        }

        .solution-card-main .solution-icon {
            background: rgba(30, 111, 217, 0.1);
            color: var(--brand-primary);
            box-shadow: none;
        }

        .solution-card-main h3 {
            font-size: 1.375rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .solution-card-main p {
            font-size: 0.9375rem;
            color: var(--text-helper);
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .solution-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }

        .solution-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 5px 0;
            font-size: 0.9375rem;
            color: var(--text-body);
        }

        .solution-list i {
            color: var(--brand-green);
            font-size: 0.8125rem;
        }

        .solution-card-sm {
            background: var(--bg-page);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(214, 225, 236, 0.6);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .solution-card-sm:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .solution-card-sm .solution-icon {
            width: 44px;
            height: 44px;
            font-size: 1rem;
            margin-bottom: 16px;
            background: rgba(30, 111, 217, 0.08);
            color: var(--brand-primary);
            box-shadow: none;
        }

        .solution-card-sm h3 {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 10px;
        }

        .solution-card-sm p {
            font-size: 0.9375rem;
            color: var(--text-helper);
            margin-bottom: 16px;
            line-height: 1.65;
            flex-grow: 1;
        }

        @media (max-width: 991.98px) {
            .solution-main-content {
                padding: 24px;
            }

            .solution-main-img {
                min-height: 200px;
            }

            .solution-main-img img {
                min-height: 200px;
            }
        }

        @media (max-width: 576px) {
            .solution-card-sm {
                padding: 20px;
            }

            .solution-main-content {
                padding: 20px;
            }
        }

        /* Data Section */
        .data-section {
            background: var(--brand-dark);
            padding: var(--section-space) 0;
            color: var(--text-on-dark);
        }

        @media (max-width: 992px) {
            .data-section {
                padding: var(--section-space-md) 0;
            }
        }

        .data-head {
            margin-bottom: 48px;
        }

        .data-head h2 {
            font-size: clamp(1.5rem, 2.5vw, 2.2rem);
            font-weight: 600;
            color: var(--text-on-dark);
        }

        .data-head p {
            font-size: 1rem;
            color: var(--text-on-dark-sub);
            opacity: 0.85;
            max-width: 560px;
            margin: 12px auto 0;
        }

        .data-item {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.25s ease;
        }

        .data-item:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .data-num {
            font-size: clamp(2rem, 3.5vw, 3rem);
            font-weight: 700;
            color: var(--brand-green);
            line-height: 1.2;
            display: block;
            margin-bottom: 6px;
        }

        .data-label {
            font-size: 0.875rem;
            color: var(--text-on-dark-sub);
            opacity: 0.8;
            letter-spacing: 0.02em;
        }

        @media (max-width: 576px) {
            .data-item {
                padding: 18px 12px;
            }
        }

        /* News Section */
        .news-section {
            background: var(--bg-page);
        }

        .news-card {
            display: block;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            height: 100%;
            border: 1px solid rgba(214, 225, 236, 0.5);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

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

        .news-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: #eef2f6;
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .news-card:hover .news-thumb img {
            transform: scale(1.04);
        }

        .news-body {
            padding: 20px 20px 24px;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 12px;
        }

        .badge {
            background: rgba(30, 111, 217, 0.1);
            color: var(--brand-primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 6px;
        }

        .news-meta time {
            font-size: 0.8125rem;
            color: var(--text-helper);
        }

        .news-body h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 8px;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-body p {
            font-size: 0.875rem;
            color: var(--text-helper);
            margin: 0;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .empty-state {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-line);
            padding: 48px 24px;
            text-align: center;
            color: var(--text-helper);
        }

        .empty-state i {
            font-size: 2.5rem;
            color: #C3D2E0;
            margin-bottom: 12px;
        }

        .empty-state p {
            margin: 0;
            font-size: 0.9375rem;
        }

        /* CTA Banner */
        .cta-banner {
            position: relative;
            padding: var(--section-space) 0;
            background: url('/assets/images/backpic/back-2.webp') no-repeat center center/cover;
        }

        .cta-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(14, 58, 102, 0.85);
        }

        .cta-banner .container {
            position: relative;
            z-index: 1;
        }

        .cta-inner {
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: clamp(1.5rem, 2.5vw, 2.2rem);
            font-weight: 600;
            color: var(--text-on-dark);
            margin-bottom: 12px;
        }

        .cta-inner p {
            font-size: 1rem;
            color: var(--text-on-dark-sub);
            opacity: 0.9;
            margin-bottom: 28px;
        }

        @media (max-width: 576px) {
            .cta-banner {
                padding: var(--section-space-sm) 0;
            }

            .cta-inner .btn {
                width: 100%;
            }
        }

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

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

        .accordion {
            --bs-accordion-border-color: var(--border-line);
            --bs-accordion-border-radius: var(--radius-lg);
            --bs-accordion-inner-border-radius: var(--radius-lg);
            --bs-accordion-btn-focus-box-shadow: 0 0 0 3px rgba(30, 111, 217, 0.12);
            --bs-accordion-active-color: var(--brand-primary);
            --bs-accordion-active-bg: rgba(30, 111, 217, 0.04);
            --bs-accordion-btn-padding-y: 20px;
            --bs-accordion-btn-padding-x: 24px;
            --bs-accordion-body-padding-y: 0;
            --bs-accordion-body-padding-x: 24px;
        }

        .accordion-item {
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-title);
            background: #fff;
            line-height: 1.5;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(30, 111, 217, 0.04);
            color: var(--brand-primary);
            box-shadow: none;
        }

        .accordion-button::after {
            background-size: 1rem;
            transition: transform 0.25s ease;
            opacity: 0.7;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(30, 111, 217, 0.12);
        }

        .accordion-body {
            padding-top: 16px;
            padding-bottom: 20px;
            color: var(--text-body);
            font-size: 0.9375rem;
            line-height: 1.75;
            border-top: 1px solid rgba(214, 225, 236, 0.5);
        }

        /* Privacy Note */
        .privacy-note {
            background: var(--bg-page);
            padding: 40px 0 60px;
        }

        .privacy-box {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-line);
            padding: 28px 32px;
            max-width: 860px;
            margin: 0 auto;
        }

        .privacy-box h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .privacy-box h3 i {
            color: var(--brand-primary);
            font-size: 0.875rem;
        }

        .privacy-box p {
            font-size: 0.8125rem;
            color: var(--text-helper);
            margin-bottom: 8px;
            line-height: 1.7;
        }

        .privacy-box p:last-child {
            margin-bottom: 0;
        }

        @media (max-width: 576px) {
            .privacy-box {
                padding: 20px;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--brand-dark);
            color: var(--text-on-dark-sub);
            padding: 64px 0 0;
        }

        .site-footer .container {
            position: relative;
            z-index: 1;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-on-dark);
        }

        .footer-brand .brand-icon {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            box-shadow: none;
        }

        .site-footer h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-on-dark);
            margin-bottom: 18px;
        }

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

        .site-footer li {
            margin-bottom: 10px;
            font-size: 0.875rem;
            line-height: 1.6;
        }

        .site-footer a {
            color: var(--text-on-dark-sub);
            transition: color 0.2s ease;
        }

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

        .footer-desc {
            font-size: 0.875rem;
            line-height: 1.7;
            opacity: 0.75;
            max-width: 320px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 48px;
            padding: 18px 0;
        }

        .footer-bottom .container {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px 24px;
        }

        .footer-bottom p {
            margin: 0;
            font-size: 0.8125rem;
            opacity: 0.6;
        }

        @media (max-width: 768px) {
            .footer-bottom .container {
                flex-direction: column;
                text-align: center;
            }
        }

        /* Modal */
        .modal-content {
            border: none;
            border-radius: var(--radius-lg);
            box-shadow: 0 24px 64px rgba(16, 42, 74, 0.18);
        }

        .modal-body {
            padding: 32px;
            position: relative;
        }

        .modal-body .btn-close {
            position: absolute;
            top: 20px;
            right: 20px;
            z-index: 2;
            opacity: 0.5;
            transition: opacity 0.2s ease;
            background: transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23142A3A'%3E%3Cpath d='M.293.293a1 1 0 0 1 1.414 0L8 6.586 14.293.293a1 1 0 1 1 1.414 1.414L9.414 8l6.293 6.293a1 1 0 0 1-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 0 1-1.414-1.414L6.586 8 .293 1.707a1 1 0 0 1 0-1.414z'/%3E%3C/svg%3E") center/1em no-repeat;
        }

        .modal-body .btn-close:hover {
            opacity: 0.9;
        }

        .modal-body h4 {
            font-size: 1.375rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 6px;
            padding-right: 32px;
        }

        .modal-sub {
            font-size: 0.875rem;
            color: var(--text-helper);
            margin-bottom: 24px;
        }

        .modal-body label {
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-title);
            margin-bottom: 6px;
            display: block;
        }

        .required {
            color: var(--brand-error);
            margin-left: 2px;
        }

        .form-control {
            height: 48px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-line);
            padding: 0.625rem 1rem;
            font-size: 0.9375rem;
            color: var(--text-body);
            background: #fff;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .form-control:focus {
            border-color: var(--brand-primary);
            box-shadow: 0 0 0 3px rgba(30, 111, 217, 0.15);
        }

        .form-control::placeholder {
            color: #9AAEBD;
            opacity: 1;
        }

        textarea.form-control {
            height: auto;
            min-height: 96px;
            resize: vertical;
            line-height: 1.6;
        }

        .form-control.is-invalid {
            border-color: var(--brand-error);
        }

        .form-error {
            margin-top: 4px;
            font-size: 0.8125rem;
        }

        .privacy-tip {
            text-align: center;
            font-size: 0.75rem;
            color: var(--text-helper);
            margin-top: 14px;
            margin-bottom: 0;
        }

        .modal-dialog {
            max-width: 480px;
        }

        @media (max-width: 576px) {
            .modal-body {
                padding: 28px 20px;
            }

            .modal-dialog {
                margin: 0 12px;
            }
        }

        /* Responsive utilities */
        @media (max-width: 575.98px) {
            .hero-btns .btn {
                width: 100%;
            }

            .hero-btns .btn-outline-primary {
                width: 100%;
            }
        }

/* roulang page: article */
:root{
  --brand-primary:#1E6FD9;
  --brand-primary-dark:#1458A6;
  --brand-dark:#0E3A66;
  --brand-success:#2FA36B;
  --brand-warning:#E8972A;
  --bg-body:#F5F8FC;
  --bg-card:#FFFFFF;
  --bg-deep:#0E3A66;
  --text-heading:#142A3A;
  --text-body:#33475B;
  --text-muted:#62748A;
  --border-color:#D6E1EC;
  --radius-md:8px;
  --radius-lg:16px;
  --shadow-card:0 4px 20px rgba(16,42,74,.06);
  --shadow-hover:0 8px 32px rgba(16,42,74,.12);
  --font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);background:var(--bg-body);color:var(--text-body);line-height:1.75;font-size:16px}
a{text-decoration:none;color:var(--brand-primary);transition:color .25s}
a:hover{color:var(--brand-primary-dark)}
img{max-width:100%;height:auto}
.container{max-width:1200px;padding-left:16px;padding-right:16px}

/* ========== Header / Nav ========== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid rgba(214,225,236,.5);transition:box-shadow .3s,background .3s}
.site-header.scrolled{background:rgba(255,255,255,.98);box-shadow:0 4px 24px rgba(16,42,74,.08)}
.navbar{padding:0;min-height:72px}
.navbar-brand{display:flex;align-items:center;gap:10px;font-size:1.3rem;font-weight:700;color:var(--text-heading);padding:0}
.navbar-brand:hover{color:var(--text-heading)}
.brand-icon{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;background:var(--brand-primary);color:#fff;font-size:1.1rem;font-weight:700;border-radius:10px;box-shadow:0 4px 12px rgba(30,111,217,.25)}
.navbar-nav{gap:4px}
.nav-item .nav-link{font-size:15px;font-weight:500;color:var(--text-body);padding:10px 16px;border-radius:var(--radius-md);position:relative;transition:color .25s,background .25s}
.nav-item .nav-link:hover{color:var(--brand-primary);background:rgba(30,111,217,.04)}
.nav-item .nav-link.active{color:var(--brand-primary);background:rgba(30,111,217,.08);font-weight:600}
.nav-cta{display:inline-flex;align-items:center;gap:8px;padding:10px 22px;border-radius:var(--radius-md);font-size:15px;font-weight:600;background:var(--brand-primary);border:1px solid var(--brand-primary);color:#fff;transition:background .25s,border-color .25s,transform .2s,box-shadow .25s}
.nav-cta:hover{background:var(--brand-primary-dark);border-color:var(--brand-primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 6px 18px rgba(30,111,217,.25)}
.navbar-toggler{border:1px solid var(--border-color);border-radius:var(--radius-md);padding:6px 10px}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(30,111,217,.18)}
.navbar-toggler-icon{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(20,42,58,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e")}

/* ========== Breadcrumb ========== */
.breadcrumb-section{background:var(--bg-card);border-bottom:1px solid rgba(214,225,236,.5);padding:96px 0 24px;margin-top:0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-muted);margin:0;padding:0;list-style:none}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:#C3D0DC;font-size:12px}
.breadcrumb a{color:var(--text-muted);transition:color .25s}
.breadcrumb a:hover{color:var(--brand-primary)}
.breadcrumb .active{color:var(--text-heading);font-weight:500;max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ========== Article Hero ========== */
.article-hero{background:linear-gradient(135deg,#F0F6FD 0%,#E8F1FA 60%,#DEEAF6 100%);padding:56px 0 64px;position:relative;overflow:hidden}
.article-hero::before{content:"";position:absolute;top:0;right:0;width:420px;height:320px;background:url('/assets/images/backpic/back-1.webp') no-repeat center/cover;opacity:.12;border-radius:0 0 0 200px;pointer-events:none}
.article-hero-inner{position:relative;z-index:2;max-width:860px;margin:0 auto;text-align:left}
.article-cat-line{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.badge-cat{display:inline-flex;align-items:center;gap:6px;background:rgba(30,111,217,.1);color:var(--brand-primary);font-size:13px;font-weight:600;padding:5px 14px;border-radius:50px;border:1px solid rgba(30,111,217,.16)}
.badge-cat i{font-size:12px}
.article-date{display:inline-flex;align-items:center;gap:6px;color:var(--text-muted);font-size:14px}
.article-date i{font-size:13px}
.article-hero h1{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:700;color:var(--text-heading);line-height:1.35;margin:8px 0 20px;letter-spacing:-.5px}
.article-summary{margin-top:20px;background:rgba(255,255,255,.7);border-left:4px solid var(--brand-primary);border-radius:0 var(--radius-md) var(--radius-md) 0;padding:18px 24px;font-size:15px;color:var(--text-body);line-height:1.7;box-shadow:var(--shadow-card)}

/* ========== Article Body ========== */
.article-body-section{padding:64px 0 48px}
.article-body-wrap{max-width:760px;margin:0 auto}
.article-content{font-size:16px;line-height:1.75;color:var(--text-body)}
.article-content p{margin-bottom:24px}
.article-content h2{font-size:1.4rem;font-weight:700;color:var(--text-heading);margin:40px 0 16px;padding-bottom:10px;border-bottom:2px solid #EEF3F8}
.article-content h3{font-size:1.2rem;font-weight:600;color:var(--text-heading);margin:32px 0 12px}
.article-content h4{font-size:1.05rem;font-weight:600;color:var(--text-heading);margin:24px 0 10px}
.article-content img{max-width:100%;height:auto;border-radius:var(--radius-md);margin:24px 0;box-shadow:var(--shadow-card)}
.article-content blockquote{border-left:4px solid var(--brand-primary);background:#F8FBFE;padding:16px 24px;border-radius:0 var(--radius-md) var(--radius-md) 0;margin:24px 0;color:var(--text-muted);font-style:normal}
.article-content blockquote p{margin-bottom:8px}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content ul,.article-content ol{padding-left:24px;margin-bottom:24px}
.article-content li{margin-bottom:8px}
.article-content li::marker{color:var(--brand-primary)}
.article-content a{color:var(--brand-primary);font-weight:500;text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(30,111,217,.3)}
.article-content a:hover{color:var(--brand-primary-dark);text-decoration-color:var(--brand-primary)}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px}
.article-content table th,.article-content table td{border:1px solid var(--border-color);padding:10px 16px;text-align:left}
.article-content table th{background:#F0F5FA;color:var(--text-heading);font-weight:600}
.article-content hr{border:none;border-top:1px solid var(--border-color);margin:32px 0}

/* not found */
.article-not-found{text-align:center;padding:60px 20px;background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}
.article-not-found h3{font-size:1.3rem;color:var(--text-heading);margin-bottom:12px}
.article-not-found p{color:var(--text-muted);margin-bottom:24px}
.article-not-found .btn{padding:12px 32px}

/* ========== Related Posts ========== */
.related-section{padding:64px 0;background:var(--bg-card);border-top:1px solid rgba(214,225,236,.4)}
.related-section .section-head{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;margin-bottom:32px}
.related-section h2{font-size:clamp(1.4rem,2.4vw,1.8rem);font-weight:700;color:var(--text-heading);margin:0}
.related-section .section-sub{color:var(--text-muted);font-size:15px;margin:0}
.related-card{background:var(--bg-body);border:1px solid rgba(214,225,236,.6);border-radius:var(--radius-lg);overflow:hidden;height:100%;transition:box-shadow .3s,transform .3s}
.related-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.related-card-img{position:relative;aspect-ratio:16/9;overflow:hidden}
.related-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.related-card:hover .related-card-img img{transform:scale(1.04)}
.related-card-body{padding:20px 24px 24px}
.related-card-body h3{font-size:1.05rem;font-weight:600;color:var(--text-heading);line-height:1.45;margin:0 0 10px}
.related-card-body h3 a{color:var(--text-heading)}
.related-card-body h3 a:hover{color:var(--brand-primary)}
.related-card-body p{font-size:14px;color:var(--text-muted);line-height:1.6;margin:0}
.related-card-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:500}

/* ========== CTA Section ========== */
.article-cta{padding:72px 0;background:var(--bg-deep);color:#fff;position:relative;overflow:hidden}
.article-cta::before{content:"";position:absolute;top:-60px;right:-60px;width:320px;height:320px;border-radius:50%;background:rgba(255,255,255,.05);pointer-events:none}
.article-cta::after{content:"";position:absolute;bottom:-80px;left:-40px;width:240px;height:240px;border-radius:50%;background:rgba(255,255,255,.04);pointer-events:none}
.cta-inner{text-align:center;position:relative;z-index:2}
.cta-inner h2{font-size:clamp(1.5rem,2.8vw,2rem);font-weight:700;margin-bottom:14px}
.cta-inner p{color:var(--border-color);font-size:16px;margin-bottom:28px;max-width:640px;margin-left:auto;margin-right:auto}
.cta-inner .btn-light{background:#fff;color:var(--brand-dark);border:none;padding:12px 36px;font-weight:600;border-radius:var(--radius-md);transition:background .25s,transform .2s,box-shadow .25s}
.cta-inner .btn-light:hover{background:#E8F1FA;transform:translateY(-2px);box-shadow:0 8px 24px rgba(255,255,255,.15)}

/* ========== Footer ========== */
.site-footer{background:var(--bg-deep);color:#fff;padding-top:64px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:1.3rem;font-weight:700;color:#fff;margin-bottom:16px}
.footer-brand .brand-icon{background:#fff;color:var(--brand-primary)}
.footer-desc{color:var(--border-color);font-size:14px;line-height:1.7;margin:0}
.site-footer h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:18px;position:relative;padding-bottom:10px}
.site-footer h4::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:2px;background:rgba(255,255,255,.3)}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer ul li{margin-bottom:10px;font-size:14px;color:var(--border-color)}
.site-footer ul li a{color:var(--border-color);transition:color .25s}
.site-footer ul li a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:48px;padding:20px 0}
.footer-bottom .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-bottom p{color:var(--border-color);font-size:13px;margin:0}

/* ========== Responsive ========== */
@media(max-width:991px){
  .navbar{min-height:64px}
  .navbar-collapse{background:var(--bg-card);border-radius:0 0 var(--radius-lg) var(--radius-lg);box-shadow:var(--shadow-hover);padding:16px;margin-top:8px}
  .nav-item .nav-link{padding:12px 16px;line-height:1.2}
  .nav-cta{margin-top:12px;width:100%;justify-content:center}
  .article-hero{padding:48px 0 48px}
  .breadcrumb-section{padding:80px 0 20px}
  .related-section .section-head{flex-direction:column;gap:8px;align-items:flex-start}
  .footer-bottom .container{flex-direction:column;text-align:center}
}
@media(max-width:768px){
  .article-hero h1{font-size:1.45rem}
  .article-summary{padding:14px 18px;font-size:14px}
  .article-body-section{padding:48px 0 40px}
  .related-section{padding:48px 0}
  .article-cta{padding:56px 0}
  .footer-brand{font-size:1.15rem}
}
@media(max-width:520px){
  .container{padding-left:14px;padding-right:14px}
  .article-hero{padding:40px 0 40px}
  .article-hero h1{font-size:1.3rem;letter-spacing:0}
  .article-cat-line{gap:8px}
  .badge-cat{font-size:12px;padding:4px 12px}
  .article-date{font-size:13px}
  .article-summary{padding:12px 16px;font-size:13.5px;border-left-width:3px}
  .article-content{font-size:15px}
  .article-content h2{font-size:1.25rem}
  .article-content h3{font-size:1.1rem}
  .related-card-body{padding:16px 18px 20px}
  .related-card-body h3{font-size:.95rem}
  .cta-inner h2{font-size:1.35rem}
  .cta-inner .btn-light{width:100%}
  .footer-bottom .container p{font-size:12px}
}

/* roulang page: category1 */
:root {
            --brand-primary: #1E6FD9;
            --brand-dark: #0E3A66;
            --brand-green: #2FA36B;
            --brand-amber: #E8972A;
            --brand-error: #D9534F;
            --bg-main: #F5F8FC;
            --bg-card: #FFFFFF;
            --text-title: #142A3A;
            --text-body: #33475B;
            --text-muted: #62748A;
            --border-color: #D6E1EC;
            --radius-md: 8px;
            --radius-lg: 16px;
            --shadow-card: 0 4px 20px rgba(16, 42, 74, 0.06);
            --shadow-hover: 0 8px 32px rgba(16, 42, 74, 0.12);
            --transition-base: all 0.25s ease;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-main);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: var(--transition-base);
        }

        a:hover {
            color: #1458A6;
        }

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

        .container {
            max-width: 1200px;
        }

        .section {
            padding: 96px 0;
        }

        .section-title {
            font-size: clamp(1.5rem, 2.5vw, 2.2rem);
            font-weight: 600;
            line-height: 1.3;
            color: var(--text-title);
            margin-bottom: 40px;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 40px;
        }

        @media (max-width: 768px) {
            .section { padding: 64px 0; }
            .section-title { margin-bottom: 28px; }
            .section-subtitle { margin-bottom: 28px; }
        }

        @media (max-width: 520px) {
            .section { padding: 48px 0; }
        }

        /* ===== 按钮 ===== */
        .btn {
            border-radius: var(--radius-md);
            height: 48px;
            padding: 0 24px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition-base);
            border-width: 1.5px;
        }

        .btn-primary {
            background: var(--brand-primary);
            border-color: var(--brand-primary);
            color: #fff;
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: #1458A6;
            border-color: #1458A6;
            color: #fff;
            box-shadow: 0 4px 16px rgba(30, 111, 217, 0.3);
        }

        .btn-primary:active {
            background: #104E91;
            box-shadow: inset 0 3px 8px rgba(0, 0, 0, 0.15);
        }

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

        .btn-outline-primary:hover {
            background: rgba(30, 111, 217, 0.06);
            border-color: #1458A6;
            color: #1458A6;
        }

        .btn-outline-light {
            background: transparent;
            border-color: #fff;
            color: #fff;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }

        .btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(30, 111, 217, 0.35);
        }

        .btn-lg {
            height: 54px;
            padding: 0 36px;
            font-size: 1.05rem;
            border-radius: 10px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(214, 225, 236, 0.6);
            z-index: 1000;
            transition: var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(16, 42, 74, 0.08);
            background: rgba(255, 255, 255, 0.98);
        }

        .navbar {
            padding: 0;
            min-height: 76px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            font-weight: 700;
            font-size: 1.4rem;
            color: var(--text-title);
            gap: 10px;
            padding: 12px 0;
        }

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

        .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--brand-primary), #2FA36B);
            color: #fff;
            border-radius: 12px;
            font-size: 1.1rem;
            font-weight: 600;
        }

        .navbar-nav .nav-item {
            margin: 0 4px;
        }

        .navbar-nav .nav-link {
            font-size: 1rem;
            color: var(--text-body);
            font-weight: 500;
            padding: 10px 16px;
            border-radius: 8px;
            position: relative;
            transition: var(--transition-base);
        }

        .navbar-nav .nav-link:hover {
            color: var(--brand-primary);
            background: rgba(30, 111, 217, 0.06);
        }

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

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--brand-primary);
            border-radius: 2px;
        }

        .nav-cta {
            margin-left: 8px;
            height: 44px;
            padding: 0 20px;
        }

        .navbar-toggler {
            border: none;
            padding: 8px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid rgba(30, 111, 217, 0.3);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23142A3A' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        @media (max-width: 991px) {
            .navbar-collapse {
                background: #fff;
                border-radius: 12px;
                padding: 16px;
                box-shadow: var(--shadow-card);
                margin-top: 12px;
                margin-bottom: 16px;
            }

            .navbar-nav .nav-link {
                line-height: 48px;
                font-size: 1rem;
                padding: 0 16px;
            }

            .navbar-nav .nav-link.active::after {
                display: none;
            }

            .nav-cta {
                margin-left: 0;
                width: 100%;
                margin-top: 12px;
            }
        }

        /* ===== 子页 Hero ===== */
        .subpage-hero {
            position: relative;
            padding: 140px 0 70px;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            color: #fff;
        }

        .subpage-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(14, 58, 102, 0.82) 0%, rgba(20, 42, 58, 0.55) 100%);
        }

        .subpage-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb-wrap {
            margin-bottom: 20px;
        }

        .breadcrumb {
            background: transparent;
            padding: 0;
            margin: 0;
        }

        .breadcrumb-item,
        .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.9rem;
        }

        .breadcrumb-item a:hover {
            color: #fff;
        }

        .breadcrumb-item.active {
            color: #fff;
            font-weight: 500;
        }

        .breadcrumb-item + .breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.5);
        }

        .subpage-hero h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 20px;
            color: #fff;
            letter-spacing: 0.5px;
        }

        .subpage-hero .lead {
            max-width: 760px;
            font-size: 1.1rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        @media (max-width: 768px) {
            .subpage-hero { padding: 110px 0 48px; }
            .subpage-hero .lead { font-size: 1rem; }
            .hero-actions .btn { width: 100%; }
        }

        /* ===== 图文区块 ===== */
        .content-intro {
            background: #fff;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .intro-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            display: block;
        }

        .intro-text .label-badge {
            display: inline-block;
            background: rgba(30, 111, 217, 0.1);
            color: var(--brand-primary);
            font-size: 0.875rem;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 6px;
            margin-bottom: 16px;
        }

        .intro-text h2 {
            font-size: clamp(1.5rem, 2.5vw, 2.1rem);
            font-weight: 600;
            line-height: 1.35;
            color: var(--text-title);
            margin-bottom: 20px;
        }

        .intro-text p {
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text-body);
            margin-bottom: 20px;
        }

        .intro-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }

        .intro-list li {
            position: relative;
            padding-left: 32px;
            margin-bottom: 14px;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        .intro-list li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--brand-green);
            font-size: 0.9rem;
        }

        @media (max-width: 991px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .intro-image img {
                height: 300px;
            }
        }

        /* ===== 步骤条 ===== */
        .steps-section {
            background: var(--bg-main);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            position: relative;
            border: 1px solid rgba(214, 225, 236, 0.4);
        }

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

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--brand-primary);
            color: #fff;
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 20px;
            box-shadow: 0 6px 16px rgba(30, 111, 217, 0.2);
        }

        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        @media (max-width: 991px) {
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 520px) {
            .steps-grid { grid-template-columns: 1fr; }
        }

        /* ===== 对照建议 ===== */
        .advice-section {
            background: #fff;
        }

        .advice-table-wrap {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(214, 225, 236, 0.4);
            overflow-x: auto;
        }

        .advice-table {
            width: 100%;
            margin: 0;
            vertical-align: middle;
            min-width: 720px;
        }

        .advice-table thead th {
            background: var(--brand-dark);
            color: #fff;
            font-weight: 500;
            font-size: 1rem;
            padding: 18px 20px;
            border: none;
            white-space: nowrap;
        }

        .advice-table thead th:first-child {
            border-radius: var(--radius-lg) 0 0 0;
        }

        .advice-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
        }

        .advice-table tbody td {
            padding: 18px 20px;
            font-size: 0.93rem;
            color: var(--text-body);
            border-bottom: 1px solid rgba(214, 225, 236, 0.5);
            line-height: 1.7;
        }

        .advice-table tbody tr:last-child td {
            border-bottom: none;
        }

        .advice-table tbody tr {
            transition: var(--transition-base);
        }

        .advice-table tbody tr:hover {
            background: rgba(30, 111, 217, 0.03);
        }

        .tag-risk {
            display: inline-block;
            background: rgba(217, 83, 79, 0.1);
            color: var(--brand-error);
            font-size: 0.8rem;
            padding: 4px 12px;
            border-radius: 6px;
            font-weight: 500;
            white-space: nowrap;
        }

        @media (max-width: 767px) {
            .advice-table-wrap {
                overflow-x: auto;
            }

            .advice-table {
                min-width: 700px;
            }
        }

        /* ===== 能力特征 ===== */
        .features-section {
            background: var(--bg-main);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            border: 1px solid rgba(214, 225, 236, 0.4);
            height: 100%;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(30, 111, 217, 0.1);
            color: var(--brand-primary);
            font-size: 1.2rem;
            margin-bottom: 16px;
        }

        .feature-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        @media (max-width: 991px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 520px) {
            .features-grid { grid-template-columns: 1fr; }
        }

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

        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion-item {
            border: 1px solid rgba(214, 225, 236, 0.7) !important;
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            background: #fff;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(16, 42, 74, 0.03);
        }

        .accordion-header {
            border: none;
        }

        .accordion-button {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-title);
            padding: 18px 22px;
            background: #fff;
            border: none;
            box-shadow: none !important;
            transition: var(--transition-base);
        }

        .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid rgba(30, 111, 217, 0.3);
            outline-offset: -2px;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(30, 111, 217, 0.04);
            color: var(--brand-primary);
            font-weight: 600;
        }

        .accordion-button::after {
            background-size: 16px;
            opacity: 0.6;
        }

        .accordion-button:not(.collapsed)::after {
            opacity: 1;
        }

        .accordion-body {
            padding: 0 22px 20px;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.8;
            border-top: 1px solid rgba(214, 225, 236, 0.3);
            padding-top: 16px;
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            background: var(--brand-dark);
            position: relative;
            padding: 80px 0;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.18;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 600;
            margin-bottom: 16px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            line-height: 1.7;
            margin-bottom: 32px;
        }

        .cta-inner .btn {
            min-width: 200px;
        }

        @media (max-width: 520px) {
            .cta-inner .btn {
                width: 100%;
                margin-bottom: 12px;
            }
        }

        /* ===== 隐私说明 ===== */
        .privacy-note {
            background: var(--bg-main);
            padding: 20px 0;
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(214, 225, 236, 0.4);
        }

        .privacy-note .container {
            max-width: 800px;
        }

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

        .site-footer .row {
            margin-bottom: 40px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--brand-primary), #2FA36B);
            border-radius: 12px;
            font-size: 1.1rem;
        }

        .footer-desc {
            color: rgba(255, 255, 255, 0.72);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
        }

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

        .site-footer ul li {
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
        }

        .site-footer ul a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition-base);
        }

        .site-footer ul a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 0;
            background: rgba(0, 0, 0, 0.15);
        }

        .footer-bottom .container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom p {
            margin: 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
        }

        @media (max-width: 767px) {
            .footer-bottom .container {
                justify-content: center;
                text-align: center;
            }
        }

        /* ===== 通用卡片 ===== */
        .info-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(214, 225, 236, 0.4);
            height: 100%;
            transition: var(--transition-base);
        }

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

        .info-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .info-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== 焦点可访问性 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid rgba(30, 111, 217, 0.5);
            outline-offset: 2px;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }

/* roulang page: category2 */
:root {
  --brand-primary: #1E6FD9;
  --brand-primary-dark: #1458A6;
  --brand-dark: #0E3A66;
  --brand-green: #2FA36B;
  --brand-amber: #E8972A;
  --brand-bg: #F5F8FC;
  --brand-white: #FFFFFF;
  --heading-color: #142A3A;
  --text-color: #33475B;
  --text-muted: #62748A;
  --border-color: #D6E1EC;
  --error-color: #D9534F;
  --radius-md: 8px;
  --radius-lg: 16px;
  --shadow-card: 0 4px 20px rgba(16, 42, 74, 0.06);
  --shadow-hover: 0 8px 32px rgba(16, 42, 74, 0.12);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --site-padding: 96px;
  --site-padding-md: 64px;
  --site-padding-sm: 48px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-color);
  background-color: var(--brand-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

.container {
  max-width: 1200px;
  padding-left: 16px;
  padding-right: 16px;
}

/* ===== Header Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1020;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(214, 225, 236, 0.6);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(16, 42, 74, 0.08);
  background: rgba(255, 255, 255, 0.98);
}

.navbar {
  padding-top: 14px;
  padding-bottom: 14px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--heading-color);
  padding: 0;
}

.navbar-brand:hover {
  color: var(--heading-color);
}

.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--brand-primary);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: 10px;
  flex-shrink: 0;
}

.navbar-nav {
  gap: 4px;
}

.navbar-nav .nav-link {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-color);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  position: relative;
  transition: color 0.2s ease, background 0.2s ease;
}

.navbar-nav .nav-link:hover {
  color: var(--brand-primary);
  background: rgba(30, 111, 217, 0.06);
}

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

.navbar-nav .nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  background: var(--brand-primary);
  border-radius: 2px;
}

.navbar-toggler {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 6px 10px;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 2px rgba(30, 111, 217, 0.15);
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(20,42,58,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.nav-cta {
  margin-left: 8px;
  white-space: nowrap;
}

.btn {
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 1rem;
  padding: 12px 24px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.btn-primary {
  background-color: var(--brand-primary);
  border-color: var(--brand-primary);
  color: #fff;
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--brand-primary-dark);
  border-color: var(--brand-primary-dark);
  color: #fff;
}

.btn-primary:active {
  background-color: #0F3D7A;
  border-color: #0F3D7A;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-outline-primary {
  background: transparent;
  border: 1.5px solid var(--brand-primary);
  color: var(--brand-primary);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
  background: rgba(30, 111, 217, 0.05);
  border-color: var(--brand-primary-dark);
  color: var(--brand-primary-dark);
}

.btn:focus-visible,
.btn-check:focus-visible + .btn {
  outline: none;
  box-shadow: 0 0 0 3px rgba(30, 111, 217, 0.3);
}

.form-control:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 2px rgba(30, 111, 217, 0.15);
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  background: linear-gradient(135deg, rgba(14, 58, 102, 0.92), rgba(20, 42, 58, 0.85)), url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  padding: 80px 0 64px;
  color: #fff;
}

.page-hero .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 20px;
  padding: 0;
  background: transparent;
}

.page-hero .breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.2s ease;
}

.page-hero .breadcrumb a:hover {
  color: #fff;
}

.page-hero .breadcrumb .separator {
  margin: 0 4px;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.25;
  color: #fff;
  margin-bottom: 16px;
}

.page-hero h1 .accent {
  color: #6BB5FF;
}

.page-hero .lead-desc {
  font-size: 1.125rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  max-width: 680px;
  margin-bottom: 28px;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 24px;
  padding: 8px 18px;
  font-size: 0.875rem;
  color: #fff;
}

.hero-badge i {
  color: #6BB5FF;
}

/* ===== Section Common ===== */
.section-block {
  padding: var(--site-padding) 0;
}

.section-light {
  background: var(--brand-white);
}

.section-alt {
  background: var(--brand-bg);
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-head .section-tag {
  display: inline-block;
  background: rgba(30, 111, 217, 0.08);
  color: var(--brand-primary);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 20px;
  padding: 4px 14px;
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--heading-color);
  margin-bottom: 14px;
}

.section-head p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ===== Overview / Feature Cards ===== */
.feature-card {
  background: var(--brand-white);
  border: 1px solid rgba(214, 225, 236, 0.6);
  border-radius: var(--radius-lg);
  padding: 32px;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

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

.feature-card .card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(30, 111, 217, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-card .card-icon i {
  font-size: 1.5rem;
  color: var(--brand-primary);
}

.feature-card.green-card .card-icon {
  background: rgba(47, 163, 107, 0.1);
}

.feature-card.green-card .card-icon i {
  color: var(--brand-green);
}

.feature-card.amber-card .card-icon {
  background: rgba(232, 151, 42, 0.1);
}

.feature-card.amber-card .card-icon i {
  color: var(--brand-amber);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--heading-color);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ===== Check Items / Content Split ===== */
.content-split {
  display: flex;
  align-items: center;
  gap: 56px;
}

.content-split.reverse {
  flex-direction: row-reverse;
}

.content-split .split-image {
  flex: 0 0 46%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.content-split .split-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  display: block;
}

.content-split .split-body {
  flex: 1;
}

.content-split .split-body h3 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--heading-color);
  margin-bottom: 14px;
  line-height: 1.3;
}

.content-split .split-body > p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

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

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text-color);
  padding: 8px 0;
}

.check-list li i {
  color: var(--brand-green);
  font-size: 1rem;
  margin-top: 3px;
  flex-shrink: 0;
}

/* ===== Process Steps ===== */
.process-steps {
  position: relative;
}

.process-steps .container {
  position: relative;
}

.steps-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step-item {
  background: var(--brand-white);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  border: 1px solid rgba(214, 225, 236, 0.5);
  box-shadow: var(--shadow-card);
  position: relative;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.step-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--brand-primary);
  border-radius: 50%;
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.step-item h4 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--heading-color);
  margin-bottom: 10px;
}

.step-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0;
}

/* ===== Scope Comparison ===== */
.scope-card {
  background: var(--brand-white);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(214, 225, 236, 0.6);
  box-shadow: var(--shadow-card);
  padding: 36px 32px;
  height: 100%;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

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

.scope-card .scope-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(214, 225, 236, 0.6);
}

.scope-card .scope-header i {
  font-size: 1.75rem;
  color: var(--brand-primary);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(30, 111, 217, 0.08);
  border-radius: 12px;
}

.scope-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--heading-color);
  margin: 0;
}

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

.scope-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-color);
  padding: 7px 0;
}

.scope-list li i {
  color: var(--brand-primary);
  font-size: 0.875rem;
  margin-top: 4px;
  flex-shrink: 0;
}

.scope-list li.text-muted-item i {
  color: var(--text-muted);
}

/* ===== FAQ ===== */
.faq-section .accordion {
  max-width: 860px;
  margin: 0 auto;
}

.faq-section .accordion-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md) !important;
  margin-bottom: 14px;
  box-shadow: 0 2px 8px rgba(16, 42, 74, 0.04);
  overflow: hidden;
}

.faq-section .accordion-button {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--heading-color);
  padding: 20px 24px;
  background: var(--brand-white);
  line-height: 1.5;
}

.faq-section .accordion-button:not(.collapsed) {
  background: rgba(30, 111, 217, 0.03);
  color: var(--brand-primary-dark);
  box-shadow: none;
}

.faq-section .accordion-button:focus {
  box-shadow: 0 0 0 2px rgba(30, 111, 217, 0.15);
  border-radius: var(--radius-md);
}

.faq-section .accordion-button::after {
  background-size: 14px;
  width: 22px;
  height: 22px;
}

.faq-section .accordion-body {
  padding: 20px 24px;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-muted);
  border-top: 1px solid rgba(214, 225, 236, 0.4);
}

/* ===== CTA ===== */
.cta-section {
  background: var(--brand-dark);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(600px 280px at 80% 0%, rgba(30, 111, 217, 0.25), transparent), radial-gradient(500px 300px at 10% 100%, rgba(47, 163, 107, 0.15), transparent);
}

.cta-section .cta-content {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
}

.cta-section p {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 560px;
  margin: 0 auto 24px;
  line-height: 1.7;
}

.cta-section .btn-primary {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
  padding: 14px 36px;
  height: auto;
}

.cta-section .btn-primary:hover {
  background: rgba(30, 111, 217, 0.85);
  border-color: rgba(30, 111, 217, 0.85);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--brand-dark);
  color: #fff;
  padding-top: 64px;
}

.site-footer h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

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

.site-footer ul li {
  margin-bottom: 10px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.65;
}

.site-footer ul li a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s ease;
}

.site-footer ul li a:hover {
  color: #fff;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  margin-top: 48px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
  margin: 0;
}

/* ===== Back to top ===== */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--brand-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 6px 20px rgba(30, 111, 217, 0.3);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
  z-index: 999;
  cursor: pointer;
  border: none;
}

.back-top.show {
  opacity: 1;
  visibility: visible;
}

.back-top:hover {
  background: var(--brand-primary-dark);
  transform: translateY(-3px);
}

/* ===== Responsive ===== */
@media (max-width: 1199px) {
  .steps-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (max-width: 991px) {
  .content-split {
    flex-direction: column;
    gap: 32px;
  }

  .content-split.reverse {
    flex-direction: column;
  }

  .content-split .split-image {
    flex: none;
    width: 100%;
  }

  .content-split .split-image img {
    height: 280px;
  }

  .navbar-collapse {
    padding-top: 12px;
  }

  .navbar-nav .nav-link {
    padding: 12px 16px;
    font-size: 1rem;
    line-height: 48px;
  }

  .navbar-nav .nav-link.active::after {
    display: none;
  }

  .navbar-nav .nav-link.active {
    background: rgba(30, 111, 217, 0.08);
  }

  .nav-cta {
    margin: 12px 16px 16px;
    width: calc(100% - 32px);
  }
}

@media (max-width: 768px) {
  .section-block {
    padding: var(--site-padding-sm) 0;
  }

  .page-hero {
    padding: 56px 0 40px;
  }

  .page-hero h1 {
    font-size: 1.75rem;
    line-height: 1.35;
  }

  .hero-badge {
    font-size: 0.8rem;
    padding: 6px 14px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .cta-section {
    padding: 40px 24px;
  }
}

@media (max-width: 520px) {
  .steps-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 24px 20px;
  }

  .scope-card {
    padding: 28px 20px;
  }

  .btn {
    height: 44px;
    font-size: 0.95rem;
  }

  .content-split .split-image img {
    height: 220px;
  }

  .cta-section .btn-primary {
    width: 100%;
  }

  .page-hero .lead-desc {
    font-size: 1rem;
  }

  .section-head {
    margin-bottom: 32px;
  }

  .navbar-brand {
    font-size: 1.05rem;
  }

  .brand-icon {
    width: 34px;
    height: 34px;
  }
}