/* roulang page: index */
:root {
            --c-primary: #2D6CDF;
            --c-primary-dark: #174EA6;
            --c-accent: #C99A2C;
            --c-success: #21A67A;
            --c-bg: #F6F8FB;
            --c-white: #FFFFFF;
            --c-text: #152B45;
            --c-muted: #5C6F87;
            --c-border: #E3E9F0;
            --footer-bg: #101E30;
            --radius-lg: 18px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 6px rgba(21, 43, 69, 0.06);
            --shadow-md: 0 8px 20px rgba(21, 43, 69, 0.07);
            --shadow-hover: 0 14px 30px rgba(21, 43, 69, 0.10);
            --ease: all 0.25s ease;
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
        }

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

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

        body {
            margin: 0;
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.75;
            color: var(--c-text);
            background: var(--c-bg);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--ease);
        }

        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }

        p,
        h1,
        h2,
        h3,
        h4,
        ul,
        ol {
            margin: 0;
        }

        ul,
        ol {
            padding: 0;
            list-style: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-pad {
            padding: 104px 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--c-primary);
            background: rgba(45, 108, 223, 0.08);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 30px;
            line-height: 1.3;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--c-text);
            max-width: 780px;
        }

        .section-sub {
            font-size: 16px;
            line-height: 1.85;
            color: var(--c-muted);
            max-width: 720px;
            margin-top: 14px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 9px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            padding: 13px 22px;
            transition: var(--ease);
            outline: none;
        }

        .btn-primary {
            background: var(--c-primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(45, 108, 223, 0.22);
        }

        .btn-primary:hover {
            background: var(--c-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(23, 78, 166, 0.25);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(23, 78, 166, 0.18);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--c-primary);
            outline-offset: 3px;
        }

        .btn-ghost {
            background: #fff;
            color: var(--c-primary);
            border: 1px solid var(--c-border);
            box-shadow: var(--shadow-sm);
        }

        .btn-ghost:hover {
            border-color: var(--c-primary);
            color: var(--c-primary-dark);
            background: #F3F7FE;
        }

        .btn-ghost:focus-visible {
            outline: 2px solid var(--c-primary);
            outline-offset: 3px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 80;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(227, 233, 240, 0.8);
        }

        .header-inner {
            min-height: 74px;
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--c-primary);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            box-shadow: 0 6px 12px rgba(45, 108, 223, 0.18);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--c-text);
            letter-spacing: -0.02em;
        }

        .logo-text span {
            color: var(--c-primary);
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            flex: 1;
            gap: 6px;
            margin-left: 6px;
        }

        .nav-item {
            position: relative;
            padding: 8px 12px;
            color: var(--c-text);
            font-size: 15px;
            font-weight: 500;
            border-radius: 8px;
            white-space: nowrap;
        }

        .nav-item:hover {
            color: var(--c-primary);
            background: rgba(45, 108, 223, 0.05);
        }

        .nav-item.is-active {
            color: var(--c-primary);
            font-weight: 600;
        }

        .nav-item.is-active::after {
            content: "";
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: -6px;
            height: 2px;
            border-radius: 2px;
            background: var(--c-primary);
        }

        .nav-cta {
            margin-left: auto;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--c-border);
            border-radius: 10px;
            color: var(--c-text);
            background: #fff;
        }

        .nav-toggle svg {
            width: 22px;
            height: 22px;
        }

        .mobile-nav {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--c-border);
            padding: 16px 24px 24px;
        }

        .mobile-nav.is-open {
            display: block;
        }

        .mobile-nav .nav-item {
            display: block;
            padding: 12px 14px;
            border-radius: 10px;
        }

        .mobile-nav .nav-item.is-active {
            background: rgba(45, 108, 223, 0.08);
        }

        .mobile-nav .btn {
            margin: 16px 14px 4px;
            width: calc(100% - 28px);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 88px 0 100px;
            background:
                linear-gradient(135deg, rgba(255, 255, 255, 0.96) 0%, rgba(246, 248, 251, 0.94) 55%, rgba(243, 247, 254, 0.90) 100%),
                url("/assets/images/backpic/back-1.png") center center / cover no-repeat;
            border-bottom: 1px solid var(--c-border);
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            width: 360px;
            height: 360px;
            right: -100px;
            top: -120px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(45, 108, 223, 0.08) 0%, rgba(45, 108, 223, 0) 68%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 72px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(45, 108, 223, 0.09);
            color: var(--c-primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 7px 14px;
            border-radius: 999px;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: 46px;
            line-height: 1.22;
            letter-spacing: -0.02em;
            font-weight: 800;
            color: var(--c-text);
            max-width: 680px;
        }

        .hero-title em {
            font-style: normal;
            color: var(--c-primary);
        }

        .hero-lead {
            font-size: 18px;
            line-height: 1.6;
            color: var(--c-muted);
            max-width: 420px;
            margin-top: 22px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 34px;
        }

        .hero-note {
            margin-top: 16px;
            font-size: 13px;
            color: #8192a6;
        }

        .hero-card {
            background: #fff;
            border: 1px solid var(--c-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 28px;
            position: relative;
        }

        .hero-card-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .hero-card-caption {
            font-size: 13px;
            color: var(--c-muted);
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .hero-step-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hero-step {
            display: flex;
            gap: 14px;
            padding: 14px 8px 14px 0;
            border-bottom: 1px solid #EEF2F6;
        }

        .hero-step:last-child {
            border-bottom: none;
            padding-bottom: 2px;
        }

        .step-num {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            color: #fff;
            background: var(--c-primary);
            flex-shrink: 0;
            box-shadow: 0 4px 8px rgba(45, 108, 223, 0.18);
        }

        .hero-step:nth-child(2) .step-num {
            background: var(--c-primary-dark);
        }

        .hero-step:nth-child(3) .step-num {
            background: var(--c-accent);
            box-shadow: 0 4px 8px rgba(201, 154, 44, 0.22);
        }

        .hero-step:nth-child(4) .step-num {
            background: var(--c-success);
            box-shadow: 0 4px 8px rgba(33, 166, 122, 0.18);
        }

        .step-body {
            padding-top: 3px;
        }

        .step-body strong {
            display: block;
            font-size: 15px;
            font-weight: 600;
            color: var(--c-text);
            margin-bottom: 4px;
        }

        .step-body p {
            font-size: 13px;
            line-height: 1.65;
            color: var(--c-muted);
        }

        /* ===== Pain Points ===== */
        .pain-block {
            max-width: 960px;
            margin: 0 auto;
        }

        .pain-item {
            display: grid;
            grid-template-columns: 4px 1fr auto;
            gap: 22px;
            padding: 28px 8px;
            border-bottom: 1px solid var(--c-border);
            align-items: start;
        }

        .pain-item:first-child {
            border-top: 1px solid var(--c-border);
        }

        .pain-bar {
            width: 4px;
            height: 40px;
            border-radius: 4px;
            background: var(--c-primary);
            margin-top: 4px;
        }

        .pain-item h3 {
            font-size: 19px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .pain-item p {
            color: var(--c-muted);
            max-width: 720px;
            font-size: 15px;
            line-height: 1.8;
        }

        .pain-mark {
            color: var(--c-accent);
            font-size: 24px;
            font-weight: 700;
            padding: 0 4px;
            line-height: 1;
        }

        /* ===== Solution ===== */
        .solution-bg {
            background: #fff;
            border-top: 1px solid var(--c-border);
            border-bottom: 1px solid var(--c-border);
        }

        .solution-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 48px;
        }

        .solution-panel {
            background: #F6F8FB;
            border: 1px solid var(--c-border);
            border-radius: 20px;
            padding: 34px;
        }

        .solution-panel h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .check-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            margin: 14px 0 4px;
        }

        .check-list li {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(227, 233, 240, 0.8);
            align-items: flex-start;
        }

        .check-list li:last-child {
            border-bottom: none;
        }

        .check-icon {
            width: 20px;
            height: 20px;
            border-radius: 6px;
            background: rgba(45, 108, 223, 0.1);
            color: var(--c-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .check-list span {
            color: var(--c-text);
            font-weight: 600;
        }

        .check-list p {
            color: var(--c-muted);
            font-size: 14px;
            margin-top: 2px;
        }

        .route-cards {
            display: flex;
            flex-direction: column;
            gap: 22px;
        }

        .route-card {
            background: #fff;
            border: 1px solid var(--c-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px 26px;
            transition: var(--ease);
        }

        .route-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: #C9D9F0;
        }

        .route-card .route-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--c-accent);
            letter-spacing: 0.05em;
            margin-bottom: 8px;
        }

        .route-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .route-step-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .route-step-list li {
            display: flex;
            gap: 10px;
            color: var(--c-muted);
            font-size: 14px;
            line-height: 1.6;
        }

        .route-step-list li::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--c-primary);
            margin-top: 9px;
            flex-shrink: 0;
        }

        /* ===== Milestones ===== */
        .milestone-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 20px;
        }

        .milestone-item {
            background: #fff;
            border: 1px solid var(--c-border);
            border-radius: var(--radius-lg);
            padding: 26px;
            position: relative;
            box-shadow: var(--shadow-sm);
            min-height: 180px;
        }

        .milestone-num {
            font-size: 44px;
            font-weight: 800;
            line-height: 1;
            color: rgba(201, 154, 44, 0.35);
            display: block;
            margin-bottom: 26px;
        }

        .milestone-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .milestone-item p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--c-muted);
        }

        /* ===== Content / CMS ===== */
        .content-bg {
            background: #fff;
            border-top: 1px solid var(--c-border);
            border-bottom: 1px solid var(--c-border);
        }

        .news-grid {
            display: grid;
            grid-template-columns: minmax(0, 6.2fr) minmax(0, 5.8fr);
            gap: 32px;
            margin-top: 26px;
        }

        .post-large {
            display: flex;
            flex-direction: column;
            background: #fff;
            border: 1px solid var(--c-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--ease);
            height: 100%;
        }

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

        .post-large .post-cover {
            aspect-ratio: 16 / 10;
            width: 100%;
            object-fit: cover;
            background: #F1F5FA;
        }

        .post-large .post-body {
            padding: 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .post-large h3 {
            font-size: 21px;
            line-height: 1.45;
            font-weight: 700;
            margin: 12px 0 10px;
        }

        .post-large p {
            color: var(--c-muted);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .post-large .post-link {
            color: var(--c-primary);
            font-weight: 600;
            font-size: 14px;
            margin-top: auto;
        }

        .post-list-vert {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .post-item {
            background: #fff;
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            box-shadow: var(--shadow-sm);
            transition: var(--ease);
        }

        .post-item:hover {
            border-color: #C9D9F0;
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
        }

        .post-item h4 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 6px;
        }

        .post-item h4 a:hover {
            color: var(--c-primary);
        }

        .post-item p {
            color: var(--c-muted);
            font-size: 14px;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .post-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 12px;
            font-size: 13px;
            color: #8192A6;
        }

        .post-meta .meta-dot {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: #B9C6D4;
        }

        .post-meta .cat-tag {
            color: var(--c-primary);
            background: rgba(45, 108, 223, 0.07);
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
        }

        .post-empty {
            border: 1px dashed var(--c-border);
            border-radius: var(--radius-lg);
            background: #FAFBFC;
            padding: 44px 20px;
            text-align: center;
            color: var(--c-muted);
            font-size: 15px;
        }

        /* ===== Feedback ===== */
        .feedback-wrap {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 28px;
            margin-top: 32px;
        }

        .feedback-main {
            background: #fff;
            border: 1px solid var(--c-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 34px;
        }

        .feedback-main blockquote {
            margin: 0;
            font-size: 17px;
            line-height: 1.9;
            color: var(--c-text);
        }

        .feedback-main figcaption {
            margin-top: 18px;
            color: var(--c-muted);
            font-size: 14px;
        }

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

        .feedback-item {
            background: #fff;
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
        }

        .feedback-item p {
            font-size: 14px;
            color: var(--c-text);
            line-height: 1.75;
            margin-bottom: 8px;
        }

        .feedback-item cite {
            font-style: normal;
            font-size: 12px;
            color: #8192A6;
        }

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

        .faq-item {
            margin-bottom: 14px;
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            background: #fff;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .faq-item details {
            border-left: 3px solid var(--c-primary);
            border-radius: var(--radius-md);
        }

        .faq-item summary {
            list-style: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            padding: 20px 54px 18px 24px;
            position: relative;
            transition: var(--ease);
        }

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

        .faq-item summary::after {
            content: "+";
            position: absolute;
            right: 24px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 24px;
            font-weight: 400;
            color: var(--c-primary);
            transition: transform 0.2s ease;
            line-height: 1;
        }

        .faq-item details[open] summary::after {
            transform: translateY(-50%) rotate(45deg);
        }

        .faq-item summary:hover {
            color: var(--c-primary-dark);
            background: #FAFCFF;
        }

        .faq-body {
            padding: 0 32px 22px 26px;
            font-size: 15px;
            line-height: 1.9;
            color: var(--c-muted);
        }

        /* ===== CTA ===== */
        .cta-banner {
            background:
                linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.96) 100%),
                repeating-linear-gradient(45deg, rgba(45, 108, 223, 0.04) 0, rgba(45, 108, 223, 0.04) 1px, transparent 1px, transparent 12px);
            border: 1px solid var(--c-border);
            border-radius: 24px;
            padding: 64px 36px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner h2 {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 800;
        }

        .cta-banner p {
            color: var(--c-muted);
            max-width: 600px;
            margin: 16px auto 0;
            font-size: 16px;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 36px;
        }

        .cta-link {
            font-weight: 500;
            color: var(--c-muted);
            border-bottom: 1px solid transparent;
        }

        .cta-link:hover {
            color: var(--c-primary);
            border-bottom-color: var(--c-primary);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--footer-bg);
            color: #B7C2D0;
            padding: 64px 0 36px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 52px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand .logo-text {
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.85;
            color: #93A1B8;
            max-width: 340px;
        }

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

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col a {
            color: #9DAAC0;
            display: inline-block;
            line-height: 1.6;
        }

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 26px;
            align-items: center;
            justify-content: space-between;
            color: #7C899C;
            font-size: 13px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1100px) {
            .hero-title {
                font-size: 40px;
            }

            .section-pad {
                padding: 84px 0;
            }
        }

        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }

            .hero-grid,
            .solution-grid {
                grid-template-columns: 1fr;
                gap: 44px;
            }

            .hero-card {
                max-width: 620px;
            }

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

            .news-grid {
                grid-template-columns: 1fr;
            }

            .feedback-wrap {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                min-height: 64px;
            }

            .hero {
                padding: 64px 0;
            }

            .hero-title {
                font-size: 32px;
            }

            .section-title {
                font-size: 26px;
            }

            .section-pad {
                padding: 68px 0;
            }

            .pain-item {
                grid-template-columns: 3px 1fr;
                gap: 14px;
            }

            .pain-mark {
                display: none;
            }

            .solution-panel {
                padding: 24px;
            }

            .cta-banner {
                padding: 48px 20px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 34px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .logo-text {
                font-size: 18px;
            }

            .hero-title {
                font-size: 27px;
                letter-spacing: -0.02em;
            }

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

            .hero-card {
                padding: 20px;
            }

            .milestone-grid {
                grid-template-columns: 1fr;
            }

            .btn {
                width: 100%;
                padding: 14px 18px;
            }

            .hero-actions .btn {
                width: auto;
                flex: 1 1 100%;
            }

            .section-title {
                font-size: 23px;
                line-height: 1.4;
            }

            .post-large .post-body {
                padding: 20px;
            }

            .feedback-main {
                padding: 24px;
            }

            .faq-item summary {
                font-size: 15px;
                padding: 18px 48px 16px 18px;
            }

            .faq-item summary::after {
                right: 18px;
            }

            .faq-body {
                padding: 0 20px 18px 18px;
            }

            .footer-bottom {
                display: block;
                line-height: 2;
            }
        }

/* roulang page: category1 */
:root {
            --color-bg: #F6F8FB;
            --color-surface: #FFFFFF;
            --color-primary: #2D6CDF;
            --color-primary-dark: #174EA6;
            --color-accent: #C99A2C;
            --color-text: #152B45;
            --color-muted: #5C6F87;
            --color-border: #E3E9F0;
            --color-footer: #101E30;
            --color-footer-text: #B8C4D2;
            --color-safe: #21A67A;
            --radius-card: 18px;
            --radius-btn: 10px;
            --shadow-card: 0 2px 6px rgba(21, 43, 69, 0.06);
            --shadow-hover: 0 14px 30px rgba(21, 43, 69, 0.1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            padding: 0;
            background: var(--color-bg);
            color: var(--color-text);
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        p,
        h1,
        h2,
        h3,
        h4,
        ul,
        ol {
            margin: 0;
            padding: 0;
        }

        ul {
            list-style: none;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 0;
            cursor: pointer;
            font-family: var(--font-stack);
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            padding: 12px 22px;
            border-radius: var(--radius-btn);
            transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
            outline: none;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(45, 108, 223, 0.2);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 10px 20px rgba(45, 108, 223, 0.22);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 4px 10px rgba(45, 108, 223, 0.18);
        }

        .btn-primary:focus-visible,
        .nav-toggle:focus-visible,
        .btn-outline:focus-visible,
        .link-line:focus-visible,
        .anchor-nav a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
        }

        .btn-lg {
            padding: 15px 28px;
            font-size: 16px;
        }

        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 1px solid #BDD0EC;
        }

        .btn-outline:hover {
            background: #EEF3FC;
            color: var(--color-primary-dark);
        }

        .link-line {
            color: var(--color-primary);
            font-size: 15px;
            font-weight: 600;
            border-bottom: 1px solid transparent;
            transition: border-color 0.2s ease, color 0.2s ease;
        }

        .link-line:hover {
            color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 76px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--color-primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            font-weight: 800;
            box-shadow: 0 6px 14px rgba(45, 108, 223, 0.22);
        }

        .logo-text {
            font-size: 21px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.2px;
        }

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

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .desktop-nav .nav-item,
        .mobile-nav .nav-item {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            padding: 9px 13px;
            border-radius: 9px;
            transition: color 0.2s ease, background 0.2s ease;
            position: relative;
        }

        .desktop-nav .nav-item:hover {
            color: var(--color-primary);
            background: rgba(45, 108, 223, 0.04);
        }

        .desktop-nav .nav-item.is-active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .desktop-nav .nav-item.is-active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: -1px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }

        .desktop-nav .nav-cta {
            margin-left: 12px;
            padding: 10px 18px;
            font-size: 14px;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            color: var(--color-text);
            cursor: pointer;
        }

        .nav-toggle svg {
            width: 21px;
            height: 21px;
        }

        .mobile-nav {
            display: none;
            max-width: 1280px;
            margin: 0 auto;
            padding: 8px 24px 18px;
            flex-direction: column;
            gap: 2px;
            border-top: 1px solid var(--color-border);
            background: rgba(255, 255, 255, 0.96);
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav .nav-item.is-active {
            color: var(--color-primary);
            background: #EDF3FD;
        }

        .mobile-nav .btn {
            margin-top: 12px;
        }

        .cat-hero {
            position: relative;
            padding: 54px 0 44px;
            background:
                linear-gradient(100deg, rgba(255, 255, 255, 0.96) 0%, rgba(250, 252, 255, 0.92) 48%, rgba(246, 248, 251, 0.9) 100%),
                url("/assets/images/backpic/back-1.png") center/cover no-repeat;
            border-bottom: 1px solid var(--color-border);
        }

        .crumb-list {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-muted);
            margin-bottom: 22px;
        }

        .crumb-list a {
            transition: color 0.2s ease;
        }

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

        .crumb-list li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .crumb-list li + li::before {
            content: "/";
            color: #C1CBD6;
        }

        .hero-cat-grid {
            display: grid;
            grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
            gap: 48px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(45, 108, 223, 0.08);
            border: 1px solid rgba(45, 108, 223, 0.14);
            border-radius: 999px;
            padding: 6px 14px;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .cat-hero h1 {
            font-size: clamp(30px, 4.2vw, 44px);
            line-height: 1.2;
            letter-spacing: -0.4px;
            color: var(--color-text);
            font-weight: 800;
            max-width: 760px;
        }

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

        .hero-lead {
            font-size: 18px;
            color: var(--color-muted);
            margin-top: 18px;
        }

        .hero-note {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px 24px 16px;
            box-shadow: var(--shadow-card);
        }

        .hero-note-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
            border-left: 3px solid var(--color-accent);
            padding-left: 12px;
            line-height: 1.5;
        }

        .hero-note-list {
            margin-top: 10px;
        }

        .hero-note-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 12px 0;
            border-top: 1px solid #EDF1F5;
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-muted);
        }

        .note-index {
            flex: 0 0 26px;
            height: 26px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            color: var(--color-primary);
            background: #EDF3FD;
            border-radius: 7px;
            margin-top: 2px;
        }

        .cat-layout {
            display: grid;
            grid-template-columns: 240px minmax(0, 1fr);
            gap: 44px;
            align-items: start;
            padding: 56px 0 76px;
        }

        .cat-aside {
            position: sticky;
            top: 102px;
        }

        .anchor-box {
            border: 1px solid var(--color-border);
            background: #fff;
            border-radius: 16px;
            padding: 20px 14px;
            box-shadow: var(--shadow-card);
        }

        .anchor-title {
            font-size: 14px;
            font-weight: 700;
            padding: 4px 12px 12px;
            color: var(--color-muted);
            letter-spacing: 0.04em;
        }

        .anchor-nav ul {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .anchor-nav a {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            line-height: 1.5;
            padding: 10px 12px;
            border-radius: 10px;
            transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
        }

        .anchor-nav a:hover {
            color: var(--color-primary);
            background: #F1F5FA;
        }

        .cat-body {
            min-width: 0;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .cat-intro-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 30px 32px;
        }

        .cat-intro-card p {
            font-size: 16px;
            line-height: 1.9;
            color: #2E4258;
            max-width: 880px;
        }

        .usage-strip {
            margin-top: 18px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }

        .usage-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-muted);
            margin-right: 4px;
        }

        .usage-tag {
            display: inline-block;
            font-size: 13px;
            line-height: 1;
            color: var(--color-text);
            background: #F6F8FB;
            border: 1px solid var(--color-border);
            padding: 8px 13px;
            border-radius: 999px;
            transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
        }

        .usage-tag:hover {
            color: var(--color-primary);
            border-color: var(--color-primary);
            background: #F0F5FF;
        }

        .cat-section {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 36px 38px;
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }

        .cat-section:hover {
            box-shadow: var(--shadow-hover);
        }

        .section-head {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 24px;
        }

        .section-index {
            flex: 0 0 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            background: #EDF3FD;
            border-radius: 13px;
            margin-top: 4px;
        }

        .section-kicker {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--color-primary);
            margin-bottom: 4px;
        }

        .cat-section h2 {
            font-size: 26px;
            line-height: 1.35;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--color-text);
        }

        .cat-section h3 {
            font-size: 18px;
            line-height: 1.5;
            font-weight: 700;
            color: var(--color-text);
            margin-top: 22px;
            margin-bottom: 12px;
        }

        .section-text {
            font-size: 16px;
            line-height: 1.9;
            color: #33475C;
            max-width: 860px;
        }

        .section-text + .check-list,
        .section-text + .process-list {
            margin-top: 16px;
        }

        .accent-line {
            width: 48px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-accent);
            margin: 20px 0 6px;
        }

        .check-list {
            margin-top: 16px;
        }

        .check-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 13px 0;
            border-bottom: 1px solid #ECF0F5;
            font-size: 15px;
            line-height: 1.8;
            color: #33475C;
        }

        .check-list li::before {
            content: "";
            flex: 0 0 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--color-primary);
            margin-top: 11px;
        }

        .check-list li strong {
            font-weight: 600;
            color: var(--color-text);
        }

        .process-list {
            counter-reset: stepCounter;
            margin-top: 16px;
            padding-left: 4px;
        }

        .process-list li {
            counter-increment: stepCounter;
            position: relative;
            padding: 10px 0 14px 58px;
            font-size: 15px;
            line-height: 1.85;
            color: #33475C;
            min-height: 42px;
        }

        .process-list li::before {
            content: counter(stepCounter, decimal-leading-zero);
            position: absolute;
            left: 0;
            top: 12px;
            width: 34px;
            height: 34px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            background: var(--color-primary);
        }

        .process-list li:not(:last-child)::after {
            content: "";
            position: absolute;
            left: 16px;
            top: 50px;
            bottom: -2px;
            width: 2px;
            border-radius: 2px;
            background: #DFE7F1;
        }

        .result-list {
            margin-top: 18px;
            border-top: 1px solid #ECF0F5;
        }

        .result-row {
            display: grid;
            grid-template-columns: 170px minmax(0, 1fr);
            gap: 24px;
            padding: 17px 6px;
            border-bottom: 1px solid #ECF0F5;
        }

        .result-row dt {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.6;
        }

        .result-row dd {
            margin: 0;
            font-size: 15px;
            line-height: 1.8;
            color: #45596E;
        }

        .safe-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(33, 166, 122, 0.08);
            color: #127A59;
            border: 1px solid rgba(33, 166, 122, 0.2);
            font-size: 13px;
            font-weight: 600;
            padding: 7px 13px;
            border-radius: 999px;
            margin-top: 16px;
        }

        .login-split {
            display: grid;
            grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
            gap: 28px;
            align-items: center;
            margin-top: 12px;
        }

        .image-wrap {
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
        }

        .image-wrap img {
            width: 100%;
            height: 230px;
            object-fit: cover;
        }

        .security-note {
            margin-top: 22px;
            border-left: 3px solid var(--color-accent);
            background: #FBF8F0;
            border-radius: 0 12px 12px 0;
            padding: 16px 18px;
            font-size: 14px;
            line-height: 1.8;
            color: #4E4430;
        }

        .final-cta-wrap {
            padding: 0 0 88px;
        }

        .final-cta-card {
            position: relative;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(21, 43, 69, 0.08);
            padding: 56px 48px;
            text-align: center;
            overflow: hidden;
        }

        .final-cta-card::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--color-primary), #86ACF0, var(--color-accent));
        }

        .final-kicker {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--color-primary);
            text-align: center;
            margin-bottom: 10px;
        }

        .final-cta-card h2 {
            font-size: 28px;
            line-height: 1.35;
            color: var(--color-text);
            margin-top: 6px;
            margin-bottom: 16px;
            font-weight: 800;
        }

        .final-cta-card p {
            font-size: 16px;
            color: var(--color-muted);
            line-height: 1.9;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-actions {
            display: flex;
            gap: 18px;
            align-items: center;
            justify-content: center;
            margin-top: 28px;
            flex-wrap: wrap;
        }

        .cta-safe {
            font-size: 13px !important;
            color: #8392A5 !important;
            margin-top: 22px;
        }

        .site-footer {
            background: var(--color-footer);
            color: var(--color-footer-text);
            padding: 64px 0 28px;
        }

        .site-footer .container {
            max-width: 1280px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: minmax(0, 1.5fr) minmax(220px, 0.9fr) minmax(220px, 0.9fr);
            gap: 56px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.9;
            color: #94A4B6;
            margin-top: 18px;
            max-width: 420px;
        }

        .site-footer .logo-text {
            color: #fff;
        }

        .site-footer .logo-text span {
            color: #7EA7F0;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #E6ECF3;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

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

        .footer-col a {
            font-size: 14px;
            color: #93A6BB;
            transition: color 0.2s ease;
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 52px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 13px;
            color: #74889C;
        }

        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .cat-layout {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-top: 44px;
            }

            .cat-aside {
                position: static;
            }

            .anchor-box {
                overflow-x: auto;
                padding: 14px;
            }

            .anchor-title {
                display: none;
            }

            .anchor-nav ul {
                flex-direction: row;
                gap: 10px;
                min-width: max-content;
            }

            .anchor-nav a {
                white-space: nowrap;
                border: 1px solid var(--color-border);
                padding: 9px 15px;
                border-radius: 999px;
                background: #F8FAFC;
            }

            .hero-cat-grid {
                grid-template-columns: 1fr;
                gap: 26px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .mobile-nav {
                padding: 8px 16px 18px;
            }

            .header-inner {
                height: 68px;
            }

            .cat-hero {
                padding: 38px 0 34px;
            }

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

            .cat-section {
                padding: 26px 22px;
            }

            .cat-intro-card {
                padding: 24px 22px;
            }

            .process-list li {
                padding-left: 50px;
            }

            .result-row {
                grid-template-columns: 1fr;
                gap: 6px;
                padding: 15px 4px;
            }

            .login-split {
                grid-template-columns: 1fr;
            }

            .image-wrap img {
                height: 200px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .final-cta-card {
                padding: 42px 24px;
            }

            .final-cta-card h2 {
                font-size: 23px;
            }

            .cat-section h2 {
                font-size: 22px;
            }

            .section-head {
                gap: 12px;
            }

            .section-index {
                flex: 0 0 38px;
                height: 38px;
                font-size: 14px;
            }

            .footer-bottom {
                display: flex;
                flex-direction: column;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .header-inner .logo-text {
                font-size: 19px;
            }

            .logo-mark {
                width: 36px;
                height: 36px;
                font-size: 17px;
            }

            .hero-cat-grid {
                grid-template-columns: 1fr;
            }

            .cat-section {
                padding: 22px 18px;
            }

            .process-list li {
                padding: 10px 0 14px 44px;
                font-size: 14px;
            }

            .process-list li::before {
                width: 28px;
                height: 28px;
                font-size: 12px;
            }

            .process-list li:not(:last-child)::after {
                left: 13px;
            }

            .cta-actions {
                align-items: stretch;
                flex-direction: column;
            }

            .cta-actions .btn,
            .cta-actions .btn-outline {
                width: 100%;
            }
        }

        details {
            background: #F8FAFC;
            border: 1px solid var(--color-border);
            border-radius: 14px;
            padding: 16px 18px;
            margin-top: 14px;
        }

        summary {
            cursor: pointer;
            list-style: none;
            font-weight: 600;
            color: #233A52;
        }

        summary::-webkit-details-marker {
            display: none;
        }

        details[open] summary {
            color: var(--color-primary);
        }

/* roulang page: article */
:root {
    --bg: #F6F8FB;
    --surface: #FFFFFF;
    --primary: #2D6CDF;
    --primary-dark: #174EA6;
    --accent: #C99A2C;
    --text-main: #152B45;
    --text-secondary: #5C6F87;
    --border: #E3E9F0;
    --success: #21A67A;
    --radius-card: 16px;
    --radius-btn: 10px;
    --radius-small: 8px;
    --shadow-card: 0 2px 6px rgba(21,43,69,.06);
    --shadow-card-hover: 0 14px 30px rgba(21,43,69,.1);
    --space-section: 96px;
    --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-main);
    background: var(--bg);
    color: var(--text-main);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
img {
    max-width: 100%;
    display: block;
}
a {
    color: inherit;
    text-decoration: none;
}
button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}
.container {
    width: 100%;
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
}
.section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
}
.is-hidden {
    display: none !important;
}
.text-secondary {
    color: var(--text-secondary);
}
.text-accent {
    color: var(--accent);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 0;
    border-radius: var(--radius-btn);
    padding: 12px 22px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    cursor: pointer;
    transition: background .2s, border-color .2s, box-shadow .2s, transform .2s, color .2s;
    outline-offset: 2px;
}
.btn:focus-visible,
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--primary-dark);
}
.btn-primary:active {
    transform: translateY(1px);
}
.btn-ghost {
    background: #fff;
    color: var(--primary);
    border: 1px solid var(--border);
}
.btn-ghost:hover {
    background: #F1F6FD;
    border-color: #B9CDEA;
    color: var(--primary-dark);
}
.btn-white {
    background: #fff;
    color: var(--primary);
}
.btn-white:hover {
    background: #E8F0FE;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    gap: 20px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.logo-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0;
    box-shadow: 0 4px 12px rgba(45,108,223,.24);
}
.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -.02em;
}
.logo-text span {
    color: var(--primary);
    font-weight: 800;
}
.desktop-nav {
    display: flex;
    align-items: center;
    gap: 26px;
}
.nav-item {
    position: relative;
    color: var(--text-main);
    font-size: 15px;
    font-weight: 500;
    padding: 8px 0;
    transition: color .2s;
    white-space: nowrap;
}
.nav-item:hover {
    color: var(--primary);
}
.nav-item.is-active {
    color: var(--primary);
    font-weight: 600;
}
.nav-item.is-active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    border-radius: 2px;
    background: var(--primary);
}
.nav-cta {
    padding: 9px 16px;
    border-radius: var(--radius-btn);
    font-size: 14px;
    font-weight: 600;
}
.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: var(--radius-small);
    color: var(--text-main);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background .2s;
}
.nav-toggle svg {
    width: 22px;
    height: 22px;
}
.nav-toggle:hover {
    background: #F1F6FD;
}
.mobile-nav {
    display: none;
}

/* Breadcrumb */
.page-breadcrumb {
    padding-top: 32px;
    padding-bottom: 24px;
}
.crumbs {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    font-size: 14px;
    color: var(--text-secondary);
    gap: 10px;
}
.crumbs a {
    color: var(--text-secondary);
    transition: color .2s;
}
.crumbs a:hover {
    color: var(--primary);
}
.crumbs .crumb-current {
    color: var(--text-main);
    font-weight: 500;
    max-width: 420px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.crumbs .crumb-divider {
    color: #B7C4D4;
    font-weight: 300;
}

/* Article layout */
.article-section {
    padding-bottom: 72px;
}
.article-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    overflow: hidden;
    max-width: 1000px;
    margin: 0 auto;
}
.article-inner {
    padding: 48px 48px 32px;
}
.article-heading {
    margin-bottom: 28px;
}
.article-heading h1 {
    font-size: 38px;
    line-height: 1.22;
    font-weight: 800;
    letter-spacing: -.02em;
    color: var(--text-main);
    margin-bottom: 24px;
}
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
    color: var(--text-secondary);
    font-size: 14px;
}
.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.meta-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: #C6D2E0;
    display: inline-block;
}
.article-cover {
    border-radius: 14px;
    overflow: hidden;
    margin-bottom: 32px;
    border: 1px solid var(--border);
    background: #F1F6FD;
}
.article-cover img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 6.8;
    object-fit: cover;
}
.article-content-wrap {
    max-width: 860px;
    margin: 0 auto;
}
.article-content {
    font-size: 17px;
    line-height: 1.9;
    color: var(--text-main);
}
.article-content > * + * {
    margin-top: 1.2em;
}
.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4 {
    color: var(--text-main);
    font-weight: 700;
    line-height: 1.3;
    margin-top: 1.6em;
    margin-bottom: .6em;
}
.article-content h2 {
    font-size: 26px;
    border-left: 3px solid var(--primary);
    padding-left: 14px;
}
.article-content h3 {
    font-size: 20px;
}
.article-content p {
    font-size: 17px;
    line-height: 1.9;
    margin-top: 1em;
}
.article-content a {
    color: var(--primary);
    border-bottom: 1px solid rgba(45,108,223,.24);
    transition: border-color .2s, color .2s;
}
.article-content a:hover {
    color: var(--primary-dark);
    border-bottom-color: var(--primary);
}
.article-content ul,
.article-content ol {
    margin: 1.1em 0 1.4em;
    padding-left: 1.4em;
}
.article-content li {
    margin-bottom: .45em;
    line-height: 1.8;
}
.article-content blockquote {
    border-left: 4px solid var(--primary);
    background: #F1F6FD;
    padding: 18px 22px;
    border-radius: 0 12px 12px 0;
    color: var(--text-secondary);
    margin: 1.6em 0;
}
.article-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 15px;
    margin: 1.6em 0;
}
.article-content table th {
    background: #F1F6FD;
    color: var(--text-main);
    font-weight: 600;
    text-align: left;
    padding: 12px 14px;
    border: 1px solid var(--border);
}
.article-content table td {
    padding: 11px 14px;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

/* Article tags, pager */
.article-footer {
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}
.tags-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 28px;
}
.tags-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-right: 2px;
}
.tag-pill {
    display: inline-flex;
    align-items: center;
    background: #F1F6FD;
    color: var(--primary);
    border: 1px solid #DCE8F7;
    border-radius: 999px;
    padding: 5px 14px;
    font-size: 13px;
    font-weight: 500;
}
.article-pager {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.pager-link {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 18px 20px;
    border-radius: 14px;
    background: #F8FAFC;
    border: 1px solid var(--border);
    transition: border-color .2s, box-shadow .2s, transform .2s, background .2s;
}
.pager-link:hover {
    border-color: #B9CDEA;
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
    background: #fff;
}
.pager-link span {
    font-size: 13px;
    color: var(--text-secondary);
}
.pager-link strong {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
}
.pager-link.next {
    text-align: right;
}
.pager-link.disabled {
    opacity: .55;
    cursor: default;
    pointer-events: none;
}
.article-back-btn {
    margin-top: 28px;
    text-align: center;
}

/* Article not found */
.not-found-wrap {
    padding: 120px 0 80px;
}
.not-found-card {
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    border-radius: 20px;
    max-width: 620px;
    margin: 0 auto;
    padding: 52px 40px;
    text-align: center;
}
.not-found-card h1 {
    font-size: 30px;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-main);
}
.not-found-card p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 28px;
}

/* Related section */
.related-section {
    background: #fff;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 86px 0;
}
.section-heading {
    margin-bottom: 40px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 720px;
}
.section-eyebrow {
    font-size: 13px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: .04em;
}
.section-heading h2 {
    font-size: 30px;
    font-weight: 800;
    line-height: 1.25;
    color: var(--text-main);
}
.section-heading p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-item {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 28px 28px 22px;
    box-shadow: 0 1px 0 rgba(255,255,255,.4);
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s;
}
.related-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: #bfd3ed;
}
.related-cat {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    background: #F1F6FD;
    display: inline-block;
    border-radius: 999px;
    padding: 4px 12px;
    margin-bottom: 14px;
    align-self: flex-start;
}
.related-item h3 {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 10px;
    color: var(--text-main);
}
.related-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
    flex: 1;
}
.related-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-secondary);
}
.related-meta a {
    color: var(--primary);
    font-weight: 500;
    transition: color .2s;
}
.related-meta a:hover {
    color: var(--primary-dark);
}

/* Bottom CTA */
.cta-band {
    padding: 84px 0;
    background: var(--bg);
}
.cta-box {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    padding: 60px 56px;
    background:
        linear-gradient(120deg, rgba(255,255,255,.94) 25%, rgba(246,248,251,.88) 60%, rgba(230,240,255,.82)),
        url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}
.cta-box .cta-copy h2 {
    font-size: 30px;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.3;
    margin-bottom: 12px;
}
.cta-box .cta-copy p {
    color: var(--text-secondary);
    font-size: 15px;
    max-width: 480px;
    line-height: 1.8;
}
.cta-actions {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-shrink: 0;
}

/* Footer */
.site-footer {
    background: #101E30;
    color: #B8C4D4;
}
.site-footer .container {
    padding-top: 64px;
    padding-bottom: 32px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 44px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .logo-text {
    color: #fff;
}
.footer-brand .logo-text span {
    color: #7FA9F5;
}
.footer-brand p {
    margin-top: 18px;
    font-size: 14px;
    line-height: 1.85;
    color: #A7B3C5;
    max-width: 300px;
}
.footer-col h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 18px;
}
.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col a {
    color: #A7B3C5;
    font-size: 14px;
    transition: color .2s;
}
.footer-col a:hover {
    color: #fff;
}
.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
    padding-top: 28px;
    font-size: 13px;
    color: #7C8AA0;
}

/* Responsive */
@media (max-width: 1024px) {
    .desktop-nav {
        display: none;
    }
    .nav-toggle {
        display: inline-flex;
    }
    .mobile-nav {
        display: block;
        visibility: hidden;
        opacity: 0;
        transform: translateY(-8px);
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 18px 40px rgba(21,43,69,.12);
        padding: 12px 24px 24px;
        transition: opacity .2s, transform .2s, visibility .2s;
    }
    .mobile-nav.open {
        visibility: visible;
        opacity: 1;
        transform: translateY(0);
    }
    .mobile-nav .nav-item {
        display: block;
        padding: 14px 12px;
        border-radius: 10px;
        font-size: 16px;
    }
    .mobile-nav .nav-item:hover {
        background: #F1F6FD;
    }
    .mobile-nav .nav-item.is-active {
        background: #EDF3FE;
    }
    .mobile-nav .nav-item.is-active::after {
        display: none;
    }
    .mobile-nav .btn {
        width: 100%;
        margin-top: 14px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .cta-box {
        flex-direction: column;
        align-items: flex-start;
        padding: 44px 36px;
    }
    .article-inner {
        padding: 36px 32px;
    }
}
@media (max-width: 767px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }
    :root {
        --space-section: 68px;
    }
    .section-heading h2 {
        font-size: 24px;
    }
    .article-heading h1 {
        font-size: 28px;
    }
    .article-card {
        border-radius: 16px;
    }
    .article-inner {
        padding: 24px 20px;
    }
    .article-cover img {
        aspect-ratio: 16 / 9;
    }
    .article-pager {
        grid-template-columns: 1fr;
    }
    .pager-link.next {
        text-align: left;
    }
    .related-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    .cta-box {
        padding: 32px 24px;
        border-radius: 18px;
    }
    .cta-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }
    .cta-actions .btn {
        width: 100%;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
    .footer-brand p {
        max-width: 100%;
    }
    .crumbs .crumb-current {
        max-width: 180px;
    }
}
@media (max-width: 480px) {
    .logo-text {
        font-size: 18px;
    }
    .logo-mark {
        width: 36px;
        height: 36px;
        font-size: 18px;
    }
    .article-heading h1 {
        font-size: 25px;
    }
    .article-content p {
        font-size: 16px;
    }
    .not-found-card {
        padding: 40px 24px;
    }
}

/* roulang page: category2 */
:root {
            --bg: #F6F8FB;
            --surface: #FFFFFF;
            --primary: #2D6CDF;
            --primary-dark: #174EA6;
            --accent: #C99A2C;
            --ink: #152B45;
            --muted: #5C6F87;
            --line: #E3E9F0;
            --safe: #21A67A;
            --footer-bg: #101E30;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 6px rgba(21, 43, 69, 0.06);
            --shadow-md: 0 14px 30px rgba(21, 43, 69, 0.10);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-stack);
            background: var(--bg);
            color: var(--ink);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        body,
        h1,
        h2,
        h3,
        h4,
        p,
        ul,
        ol,
        figure,
        blockquote {
            margin: 0;
        }

        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            color: var(--ink);
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
            border: 0;
            cursor: pointer;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--line);
        }

        .header-inner {
            display: flex;
            align-items: center;
            height: 76px;
            gap: 24px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--ink);
            flex-shrink: 0;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 8px 18px rgba(45, 108, 223, 0.22);
        }

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

        .desktop-nav {
            display: none;
            align-items: center;
            gap: 2px;
            margin-left: auto;
        }

        .desktop-nav .nav-item {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 8px 10px;
            margin: 0 2px;
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
            border-bottom: 2px solid transparent;
            transition: color 0.2s ease, border-color 0.2s ease;
            white-space: nowrap;
        }

        .desktop-nav .nav-item:hover {
            color: var(--primary);
        }

        .desktop-nav .nav-item.is-active {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .nav-cta {
            margin-left: 12px;
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 6px;
            padding: 12px 16px 20px;
            background: #fff;
            border-bottom: 1px solid var(--line);
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav .nav-item {
            padding: 12px 14px;
            border-radius: 12px;
            color: var(--ink);
            font-weight: 600;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .mobile-nav .nav-item:hover {
            background: #F1F5FD;
            color: var(--primary);
        }

        .mobile-nav .nav-item.is-active {
            background: #E8EFFC;
            color: var(--primary);
        }

        .mobile-nav .btn {
            margin-top: 8px;
        }

        .nav-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            margin-left: auto;
            border-radius: 12px;
            color: var(--ink);
            border: 1px solid var(--line);
            background: #fff;
        }

        .nav-toggle svg {
            width: 24px;
            height: 24px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 20px;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
        }

        .btn:focus-visible,
        .nav-toggle:focus-visible,
        .nav-item:focus-visible,
        a:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 6px;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 10px 22px rgba(45, 108, 223, 0.2);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-outline {
            background: #fff;
            border-color: #D6DFEA;
            color: var(--primary);
        }

        .btn-outline:hover {
            background: #F1F5FD;
            border-color: var(--primary);
            transform: translateY(-1px);
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 2px;
            font-weight: 600;
            color: var(--primary);
            transition: color 0.2s ease;
        }

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

        .category-hero {
            position: relative;
            overflow: hidden;
            padding: 74px 0 60px;
            background: linear-gradient(180deg, #FFFFFF 0%, #F6F8FB 100%);
            border-bottom: 1px solid var(--line);
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url("/assets/images/backpic/back-2.png") center 35% / cover no-repeat;
            opacity: 0.14;
            pointer-events: none;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(255, 255, 255, 0.96) 0%, rgba(246, 248, 251, 0.92) 100%);
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            max-width: 960px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            padding: 5px 12px;
            background: #EAF0FD;
            color: var(--primary);
            border-radius: 7px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.02em;
        }

        .category-hero h1 {
            margin-top: 18px;
            font-size: clamp(36px, 5vw, 48px);
            font-weight: 800;
            color: var(--ink);
            line-height: 1.18;
        }

        .category-hero .hero-lead {
            margin-top: 18px;
            max-width: 780px;
            color: var(--muted);
            font-size: 17px;
            line-height: 1.9;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            margin-top: 30px;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 26px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 12px;
            border: 1px solid var(--line);
            background: rgba(255, 255, 255, 0.82);
            color: var(--muted);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
        }

        .tag strong {
            color: var(--ink);
            font-weight: 600;
            margin-right: 4px;
        }

        .safe-steps {
            padding: 72px 0 64px;
            background: var(--bg);
        }

        .section-heading {
            max-width: 860px;
            margin-bottom: 42px;
        }

        .section-heading .section-title {
            margin-top: 12px;
            font-size: clamp(26px, 3.6vw, 36px);
            font-weight: 800;
            line-height: 1.3;
        }

        .section-heading p {
            margin-top: 12px;
            color: var(--muted);
            font-size: 17px;
        }

        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 0 32px;
            border-top: 1px solid var(--line);
            padding-top: 34px;
        }

        .step-item {
            position: relative;
        }

        .step-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: -38px;
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--accent);
        }

        .step-item .step-index {
            display: block;
            font-size: 13px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.08em;
            margin-bottom: 10px;
        }

        .step-item h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .step-item p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
        }

        .detail-section {
            padding: 64px 0 88px;
            background: var(--surface);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .detail-grid {
            display: grid;
            grid-template-columns: 228px minmax(0, 1fr);
            gap: 44px;
            align-items: start;
        }

        .aside-nav {
            position: sticky;
            top: 104px;
            display: block;
        }

        .aside-nav-title {
            font-size: 13px;
            font-weight: 700;
            color: var(--muted);
            letter-spacing: 0.06em;
            margin-bottom: 12px;
            padding-left: 4px;
        }

        .anchor-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 4px;
        }

        .anchor-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: 12px;
            background: var(--bg);
            border: 1px solid transparent;
            color: var(--muted);
            font-size: 14px;
            font-weight: 600;
            transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
        }

        .anchor-list a:hover {
            background: #EAF0FD;
            color: var(--primary);
            border-color: #D8E4FB;
            transform: translateX(3px);
        }

        .aside-note {
            margin-top: 20px;
            padding: 14px 16px;
            border: 1px solid var(--line);
            border-radius: 14px;
            background: #fff;
            box-shadow: var(--shadow-sm);
        }

        .aside-note p {
            font-size: 13px;
            line-height: 1.8;
            color: var(--muted);
        }

        .content-main {
            min-width: 0;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 22px;
            box-shadow: var(--shadow-sm);
            padding: clamp(24px, 4vw, 48px);
        }

        .guide-block {
            border-bottom: 1px solid var(--line);
            padding: 38px 0 42px;
            scroll-margin-top: 130px;
        }

        .guide-block:first-child {
            padding-top: 10px;
        }

        .guide-block:last-child {
            border-bottom: 0;
            padding-bottom: 10px;
        }

        .guide-index {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 34px;
            height: 26px;
            padding: 0 8px;
            border-radius: 7px;
            background: #EEF3FE;
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .guide-block h3 {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .guide-block p {
            color: var(--ink);
            line-height: 1.9;
            margin-bottom: 14px;
            font-size: 16px;
        }

        .guide-block p.soft {
            color: var(--muted);
        }

        .check-list {
            list-style: none;
            padding: 0;
            margin: 16px 0 22px;
            display: grid;
            gap: 10px;
        }

        .check-list li {
            position: relative;
            padding-left: 28px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.8;
        }

        .check-list li::before {
            content: "";
            position: absolute;
            left: 4px;
            top: 9px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--safe);
        }

        .order-list {
            counter-reset: step;
            list-style: none;
            margin: 16px 0 22px;
            padding: 0;
            display: grid;
            gap: 12px;
        }

        .order-list li {
            position: relative;
            padding-left: 34px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.8;
        }

        .order-list li::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            left: 0;
            top: 3px;
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #EAF0FD;
            color: var(--primary);
            border-radius: 8px;
            font-size: 12px;
            font-weight: 800;
        }

        .notice-card {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 18px 20px;
            border-radius: 16px;
            background: #FFFBEF;
            border: 1px solid #F1E6C9;
            margin-top: 20px;
        }

        .notice-card strong {
            display: block;
            color: #9A771D;
            font-size: 14px;
            letter-spacing: 0.02em;
        }

        .notice-card span {
            color: #7A6A44;
            font-size: 15px;
            line-height: 1.85;
        }

        .device-note {
            display: grid;
            grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
            align-items: center;
            border: 1px solid var(--line);
            border-radius: 18px;
            overflow: hidden;
            margin: 24px 0 6px;
            background: var(--bg);
        }

        .device-note img {
            width: 100%;
            height: 100%;
            min-height: 210px;
            object-fit: cover;
        }

        .device-note figcaption {
            padding: 24px 26px;
        }

        .device-note figcaption h4 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .device-note figcaption p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .content-note {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding: 22px 24px;
            margin-top: 24px;
            border: 1px solid #D8E4FB;
            border-radius: 18px;
            background: linear-gradient(135deg, #F3F7FF 0%, #FFFFFF 80%);
        }

        .content-note h4 {
            font-size: 17px;
            margin-bottom: 6px;
        }

        .content-note p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .scenario-section {
            padding: 78px 0;
            background: var(--bg);
        }

        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(12, minmax(0, 1fr));
            gap: 18px;
        }

        .scenario-card {
            position: relative;
            padding: 26px;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: var(--surface);
            box-shadow: var(--shadow-sm);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

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

        .scenario-card .card-index {
            color: var(--accent);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.06em;
        }

        .scenario-card h3 {
            margin-top: 10px;
            margin-bottom: 10px;
            font-size: 18px;
        }

        .scenario-card p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
        }

        .scenario-col-1 {
            grid-column: span 5;
        }

        .scenario-col-2 {
            grid-column: span 4;
        }

        .scenario-col-3 {
            grid-column: span 3;
        }

        .faq-section {
            padding: 84px 0 72px;
            background: var(--surface);
            border-top: 1px solid var(--line);
        }

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

        .faq-heading {
            margin-bottom: 36px;
        }

        .faq-heading .eyebrow {
            margin-bottom: 14px;
        }

        details.faq-item {
            margin-bottom: 14px;
            border: 1px solid var(--line);
            border-radius: 16px;
            background: var(--surface);
            box-shadow: 0 2px 6px rgba(21, 43, 69, 0.04);
            overflow: hidden;
        }

        summary.faq-q {
            list-style: none;
            cursor: pointer;
            position: relative;
            padding: 20px 58px 20px 22px;
            border-left: 3px solid var(--primary);
            font-weight: 700;
            font-size: 16px;
            color: var(--ink);
            background: #fff;
            line-height: 1.5;
            transition: background 0.2s ease;
        }

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

        summary.faq-q::after {
            content: "+";
            position: absolute;
            right: 20px;
            top: 50%;
            width: 26px;
            height: 26px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 22px;
            font-weight: 300;
            transform: translateY(-50%);
            transition: transform 0.2s ease;
            border-radius: 8px;
            background: #EAF0FD;
        }

        details[open] summary.faq-q::after {
            transform: translateY(-50%) rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-a {
            padding: 0 24px 24px 24px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.9;
        }

        .faq-a p {
            margin: 0;
        }

        .cta-section {
            padding: 72px 0 88px;
            background: var(--bg);
        }

        .final-card {
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            padding: clamp(28px, 4vw, 56px);
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 24px;
            box-shadow: var(--shadow-sm);
        }

        .final-card::before {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            top: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0.5;
        }

        .final-card h2 {
            margin-top: 12px;
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 800;
        }

        .final-card p {
            max-width: 620px;
            color: var(--muted);
            font-size: 16px;
            line-height: 1.9;
            margin-top: 12px;
        }

        .final-card .btn {
            flex-shrink: 0;
        }

        .site-footer {
            background: var(--footer-bg);
            color: #B9C5D6;
            padding: 72px 0 28px;
        }

        .site-footer .logo {
            color: #fff;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1fr;
            gap: 56px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand p {
            max-width: 36em;
            margin-top: 16px;
            color: #A7B4C6;
            font-size: 14px;
            line-height: 1.9;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 16px;
            margin-bottom: 18px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 12px;
        }

        .footer-col a {
            color: #A7B4C6;
            font-size: 14px;
            transition: color 0.2s ease;
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: wrap;
            padding-top: 26px;
            font-size: 13px;
            color: #8291A5;
        }

        @media (max-width: 1080px) {
            .step-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
                gap: 40px 24px;
            }
            .step-item::before {
                top: -16px;
            }
            .detail-grid {
                grid-template-columns: 196px minmax(0, 1fr);
                gap: 28px;
            }
            .scenario-col-1 {
                grid-column: span 7;
            }
            .scenario-col-2 {
                grid-column: span 5;
            }
            .scenario-col-3 {
                grid-column: span 12;
            }
            .final-card {
                align-items: flex-start;
                flex-direction: column;
            }
        }

        @media (max-width: 860px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
            .footer-brand {
                grid-column: span 2;
            }
        }

        @media (min-width: 981px) {
            .desktop-nav {
                display: flex;
            }
            .nav-toggle {
                display: none;
            }
        }

        @media (max-width: 980px) {
            .desktop-nav {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .detail-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .aside-nav {
                position: static;
                overflow-x: auto;
                padding-bottom: 6px;
            }
            .aside-nav-title {
                margin-bottom: 8px;
            }
            .anchor-list {
                display: flex;
                flex-wrap: nowrap;
                overflow-x: auto;
                gap: 8px;
                padding-bottom: 8px;
                scrollbar-width: none;
            }
            .anchor-list::-webkit-scrollbar {
                display: none;
            }
            .anchor-list a {
                white-space: nowrap;
                background: #fff;
                border: 1px solid var(--line);
            }
            .anchor-list a:hover {
                transform: none;
            }
            .aside-note {
                display: none;
            }
            .device-note {
                grid-template-columns: 1fr;
            }
            .device-note img {
                min-height: 200px;
            }
            .content-note {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 820px) {
            .category-hero {
                padding: 54px 0 48px;
            }
            .safe-steps {
                padding: 54px 0 48px;
            }
            .step-grid {
                grid-template-columns: 1fr;
                gap: 34px;
            }
            .step-item::before {
                top: -12px;
            }
            .detail-section {
                padding: 48px 0 64px;
            }
            .scenario-card {
                grid-column: span 12 !important;
            }
            .scenario-card:hover {
                transform: none;
            }
            .faq-section {
                padding: 56px 0 48px;
            }
            .cta-section {
                padding: 52px 0 64px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .footer-brand {
                grid-column: span 1;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
            .final-card {
                padding: 28px 22px;
            }
            .content-main {
                padding: 20px 18px;
            }
            .guide-block h3 {
                font-size: 19px;
            }
        }

/* roulang page: category3 */
:root {
    --primary: #2D6CDF;
    --primary-deep: #174EA6;
    --accent: #C99A2C;
    --success: #21A67A;
    --heading: #152B45;
    --muted: #5C6F87;
    --border: #E3E9F0;
    --surface: #FFFFFF;
    --bg: #F6F8FB;
    --footer-bg: #101E30;
    --footer-text: #C9D4E4;
    --radius-card: 16px;
    --radius-panel: 24px;
    --radius-btn: 10px;
    --shadow-card: 0 2px 6px rgba(21, 43, 69, 0.06);
    --shadow-lift: 0 14px 30px rgba(21, 43, 69, 0.1);
    --shadow-cta: 0 18px 40px rgba(21, 43, 69, 0.08);
    --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.75;
    background: var(--bg);
    color: var(--heading);
    -webkit-font-smoothing: antialiased;
  }

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

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

  p,
  ul,
  ol,
  figure,
  h1,
  h2,
  h3,
  h4 {
    margin-top: 0;
  }

  ::selection {
    background: #DCE8FC;
  }

  a:focus-visible,
  button:focus-visible,
  summary:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 6px;
  }

  .container {
    width: min(1280px, 100% - 32px);
    margin-inline: auto;
  }

  @media (min-width: 768px) {
    .container {
      width: min(1280px, 100% - 48px);
    }
  }

  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
  }

  /* Header */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
  }

  .header-inner {
    display: flex;
    height: 72px;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

  .logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, #2D6CDF, #174EA6);
    color: #ffffff;
    font-weight: 800;
    font-size: 19px;
    box-shadow: 0 6px 16px rgba(45, 108, 223, 0.25);
  }

  .logo-text {
    color: var(--heading);
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.01em;
    white-space: nowrap;
  }

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

  .desktop-nav {
    display: flex;
    align-items: center;
    gap: 4px;
  }

  .desktop-nav .nav-item {
    position: relative;
    display: inline-flex;
    align-items: center;
    height: 40px;
    padding: 0 14px;
    color: var(--heading);
    font-size: 15px;
    font-weight: 600;
    border-radius: 8px;
  }

  .desktop-nav .nav-item:hover {
    color: var(--primary);
    background: #F2F6FD;
  }

  .desktop-nav .nav-item.is-active {
    color: var(--primary);
  }

  .desktop-nav .nav-item.is-active::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: -2px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 24px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    line-height: 1.2;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  }

  .btn-primary {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 8px 20px rgba(45, 108, 223, 0.18);
  }

  .btn-primary:hover {
    background: var(--primary-deep);
    color: #ffffff;
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(23, 78, 166, 0.22);
  }

  .btn-primary:active {
    transform: translateY(0);
  }

  .btn-line {
    background: #ffffff;
    color: var(--primary);
    border-color: #D3E0F2;
  }

  .btn-line:hover {
    background: #F2F6FD;
    border-color: #AFC8ED;
  }

  .btn-ghost {
    background: rgba(255, 255, 255, 0.72);
    color: var(--primary-deep);
    border-color: #C9DAF1;
  }

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

  .nav-cta {
    height: 40px;
    padding: 0 18px;
    margin-left: 10px;
    border-radius: 9px;
    font-size: 14px;
  }

  .nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--heading);
  }

  .nav-toggle svg {
    width: 22px;
    height: 22px;
  }

  .mobile-nav {
    display: none;
    padding: 0 6px 18px;
    background: #ffffff;
    border-top: 1px solid var(--border);
  }

  .mobile-nav.is-open {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .mobile-nav .nav-item {
    display: block;
    padding: 13px 14px;
    border-radius: 10px;
    color: var(--heading);
    font-weight: 600;
    font-size: 15px;
  }

  .mobile-nav .nav-item:hover,
  .mobile-nav .nav-item.is-active {
    background: #EBF1FC;
    color: var(--primary);
  }

  .mobile-nav .btn {
    justify-content: center;
    margin-top: 12px;
  }

  @media (max-width: 1023.98px) {
    .desktop-nav {
      display: none;
    }

    .nav-toggle {
      display: inline-flex;
    }
  }

  @media (min-width: 1024px) {
    .mobile-nav {
      display: none;
    }
  }

  /* Category hero */
  .category-hero {
    position: relative;
    padding: 58px 0 56px;
    background:
      linear-gradient(115deg, rgba(255, 255, 255, 0.96) 0%, rgba(246, 248, 251, 0.92) 48%, rgba(225, 234, 246, 0.72) 100%),
      url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    border-bottom: 1px solid var(--border);
    overflow: hidden;
  }

  .crumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--muted);
  }

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

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

  .crumb .sep {
    color: #AAB8C9;
  }

  .crumb [aria-current="page"] {
    color: var(--heading);
    font-weight: 600;
  }

  .hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid #D5E2F3;
    border-radius: 999px;
    color: var(--heading);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.03em;
  }

  .hero-tag::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
  }

  .category-hero h1 {
    margin: 20px 0 12px;
    font-size: clamp(34px, 5vw, 48px);
    line-height: 1.2;
    letter-spacing: -0.01em;
    color: var(--heading);
  }

  .hero-lead {
    margin: 0;
    max-width: 620px;
    color: var(--muted);
    font-size: 18px;
    line-height: 1.7;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-top: 32px;
  }

  @media (max-width: 767.98px) {
    .category-hero {
      padding: 42px 0 40px;
    }

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

  /* Category layout */
  .category-main {
    padding: 64px 0 76px;
  }

  .category-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  @media (max-width: 1023.98px) {
    .category-layout {
      grid-template-columns: minmax(0, 1fr);
      gap: 22px;
    }
  }

  .toc-card {
    position: sticky;
    top: 96px;
    padding: 22px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
  }

  .toc-title {
    margin: 0 0 14px;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--muted);
  }

  .toc-links {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .toc-links a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 12px;
    border-radius: 10px;
    color: var(--heading);
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
  }

  .toc-links a span {
    color: var(--primary);
    font-weight: 700;
  }

  .toc-links a:hover {
    background: #F1F6FD;
    color: var(--primary);
  }

  .toc-card .btn {
    width: 100%;
    height: 44px;
    margin-top: 16px;
    font-size: 14px;
  }

  @media (max-width: 1023.98px) {
    .toc-card {
      display: none;
    }
  }

  .mobile-anchors {
    display: none;
    gap: 8px;
    overflow-x: auto;
    padding: 2px 1px 12px;
    scrollbar-width: thin;
  }

  .mobile-anchors a {
    flex: 0 0 auto;
    padding: 9px 14px;
    border: 1px solid #D9E5F4;
    border-radius: 999px;
    background: #ffffff;
    color: var(--heading);
    font-size: 13px;
    font-weight: 600;
  }

  .mobile-anchors a:hover {
    color: var(--primary);
    border-color: var(--primary);
  }

  @media (max-width: 1023.98px) {
    .mobile-anchors {
      display: flex;
    }
  }

  .content-panel {
    padding: clamp(24px, 4vw, 48px);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-panel);
    box-shadow: var(--shadow-card);
    min-width: 0;
  }

  .content-section {
    position: relative;
    padding: 36px 0;
    border-bottom: 1px solid var(--border);
    scroll-margin-top: 104px;
  }

  .content-section:first-child {
    padding-top: 0;
  }

  .content-section:last-of-type {
    border-bottom: 0;
    padding-bottom: 8px;
  }

  .section-head {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
  }

  .section-head .section-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    flex: none;
    border-radius: 11px;
    background: #EAF1FD;
    color: var(--primary);
    font-size: 15px;
    font-weight: 800;
  }

  .section-head h2 {
    margin: 0;
    font-size: 26px;
    line-height: 1.35;
    color: var(--heading);
  }

  .section-lead {
    margin: 0 0 24px;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.85;
  }

  .info-flex {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: center;
    gap: 24px;
    padding: 18px;
    background: #FAFBFD;
    border: 1px solid var(--border);
    border-radius: 18px;
    margin-bottom: 18px;
  }

  .info-flex img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 14px;
    border: 1px solid var(--border);
  }

  .info-flex-body {
    min-width: 0;
  }

  @media (max-width: 767.98px) {
    .info-flex {
      grid-template-columns: 1fr;
    }

    .info-flex img {
      height: 180px;
    }
  }

  .tick-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .tick-list li {
    position: relative;
    padding-left: 30px;
    color: #344B63;
    line-height: 1.8;
  }

  .tick-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 19px;
    height: 19px;
    border-radius: 50%;
    background: #E8F0FE;
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
  }

  .tick-list strong {
    color: var(--heading);
  }

  .note-bar {
    display: flex;
    gap: 12px;
    padding: 15px 17px;
    background: #F8FAFD;
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
  }

  .note-bar strong {
    color: var(--heading);
    flex: none;
  }

  /* Step list */
  .step-list {
    display: grid;
    gap: 10px;
    margin-top: 4px;
  }

  .step-item {
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 18px;
    padding: 16px 0;
    border-bottom: 1px dashed #DCE5F0;
  }

  .step-item:last-child {
    border-bottom: 0;
  }

  .step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 13px;
    background: var(--primary);
    color: #ffffff;
    font-size: 16px;
    font-weight: 800;
    box-shadow: 0 8px 18px rgba(45, 108, 223, 0.2);
  }

  .step-content h3 {
    margin: 0 0 5px;
    font-size: 18px;
    line-height: 1.4;
    color: var(--heading);
  }

  .step-content p {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.75;
  }

  @media (max-width: 479.98px) {
    .step-item {
      grid-template-columns: 36px minmax(0, 1fr);
      gap: 12px;
    }

    .step-num {
      width: 34px;
      height: 34px;
      font-size: 14px;
    }
  }

  /* Table */
  .table-wrap {
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow-x: auto;
    background: #ffffff;
    margin: 6px 0 18px;
  }

  .error-table {
    width: 100%;
    min-width: 680px;
    border-collapse: collapse;
    font-size: 15px;
  }

  .error-table th {
    padding: 14px 16px;
    text-align: left;
    background: #F2F6FC;
    color: var(--heading);
    font-weight: 700;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
  }

  .error-table td {
    padding: 15px 16px;
    border-bottom: 1px solid #EAF0F7;
    color: #3D5570;
    vertical-align: top;
    line-height: 1.7;
  }

  .error-table tbody tr:last-child td {
    border-bottom: 0;
  }

  .error-table tbody tr {
    transition: background 0.2s ease;
  }

  .error-table tbody tr:hover {
    background: #FAFCFE;
  }

  /* FAQ */
  .faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
  }

  .faq-item {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
  }

  .faq-item[open] {
    box-shadow: var(--shadow-card);
    border-color: #C6D7F2;
  }

  .faq-item summary {
    position: relative;
    display: block;
    list-style: none;
    cursor: pointer;
    background: #FBFCFE;
    border-left: 3px solid var(--primary);
    padding: 18px 46px 18px 20px;
    color: var(--heading);
    font-weight: 600;
    font-size: 16px;
    line-height: 1.6;
    transition: background 0.2s ease, color 0.2s ease;
  }

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

  .faq-item summary:hover {
    background: #EFF5FE;
    color: var(--primary);
  }

  .faq-icon {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    width: 22px;
    height: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .faq-icon::before {
    content: "+";
    font-size: 22px;
    font-weight: 400;
    color: var(--primary);
    line-height: 1;
    transition: transform 0.25s ease;
  }

  .faq-item[open] .faq-icon::before {
    transform: rotate(45deg);
  }

  .faq-answer {
    padding: 2px 20px 20px 23px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.8;
    border-left: 3px solid #EAF0FA;
    margin-left: 0;
  }

  .faq-answer p {
    margin-bottom: 0;
  }

  /* CTA */
  .category-cta {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    margin-top: 28px;
    padding: 34px 36px;
    background:
      linear-gradient(120deg, rgba(255, 255, 255, 0.96), rgba(242, 247, 254, 0.94)),
      url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
    border: 1px solid #D8E5F5;
    border-radius: 22px;
    box-shadow: var(--shadow-cta);
    scroll-margin-top: 96px;
  }

  .category-cta h2 {
    margin: 8px 0 10px;
    font-size: 24px;
    line-height: 1.4;
    color: var(--heading);
  }

  .cta-kicker {
    margin: 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.06em;
  }

  .category-cta p {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.7;
    max-width: 620px;
  }

  .cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    flex: none;
  }

  @media (max-width: 767.98px) {
    .category-cta {
      flex-direction: column;
      align-items: stretch;
      padding: 26px 22px;
    }

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

  /* Footer */
  .site-footer {
    background: var(--footer-bg);
    color: var(--footer-text);
    padding: 62px 0 30px;
  }

  .site-footer .container {
    width: min(1280px, 100% - 48px);
  }

  .footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr) minmax(0, 0.8fr);
    gap: 48px;
    padding-bottom: 40px;
  }

  .footer-brand .logo {
    margin-bottom: 16px;
  }

  .footer-brand .logo-text {
    color: #ffffff;
  }

  .footer-brand p {
    margin: 12px 0 0;
    color: #9FB0C4;
    font-size: 14px;
    line-height: 1.85;
    max-width: 350px;
  }

  .footer-col h4 {
    margin: 0 0 16px;
    color: #ffffff;
    font-size: 16px;
    font-weight: 700;
  }

  .footer-col ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 11px;
  }

  .footer-col a {
    color: #AABBD0;
    font-size: 14px;
    line-height: 1.5;
  }

  .footer-col a:hover {
    color: #ffffff;
  }

  .footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    padding-top: 26px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    color: #8DA1B8;
    font-size: 13px;
    line-height: 1.6;
  }

  @media (max-width: 767.98px) {
    .site-footer {
      padding-top: 46px;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 34px;
    }

    .footer-bottom {
      flex-direction: column;
    }
  }

/* roulang page: category4 */
:root {
            --bg: #F6F8FB;
            --surface: #FFFFFF;
            --primary: #2D6CDF;
            --primary-deep: #174EA6;
            --accent: #C99A2C;
            --heading: #152B45;
            --muted: #5C6F87;
            --border: #E3E9F0;
            --green: #21A67A;
            --shadow-card: 0 2px 6px rgba(21, 43, 69, 0.06);
            --shadow-hover: 0 14px 30px rgba(21, 43, 69, 0.1);
            --radius: 18px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--heading);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        body.is-locked {
            overflow: hidden;
        }

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

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

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

        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, 0.86);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            min-height: 76px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            display: inline-grid;
            place-items: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(145deg, #2D6CDF, #174EA6);
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            box-shadow: 0 6px 14px rgba(45, 108, 223, 0.2);
        }

        .logo-text {
            color: var(--heading);
            font-size: 19px;
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.2;
        }

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

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-item {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 42px;
            padding: 0 14px;
            border-radius: 10px;
            color: var(--heading);
            font-size: 15px;
            font-weight: 500;
            transition: color 0.2s ease, background 0.2s ease;
            border-bottom: 2px solid transparent;
        }

        .nav-item:hover {
            color: var(--primary);
            background: rgba(45, 108, 223, 0.05);
        }

        .nav-item.is-active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(45, 108, 223, 0.06);
            box-shadow: inset 0 -2px 0 var(--primary);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 46px;
            padding: 0 22px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            border: 1px solid transparent;
            transition: background 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease, color 0.25s ease, transform 0.15s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 18px rgba(45, 108, 223, 0.18);
        }

        .btn-primary:hover {
            background: var(--primary-deep);
            box-shadow: 0 10px 24px rgba(23, 78, 166, 0.24);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 6px 12px rgba(23, 78, 166, 0.2);
        }

        .btn-ghost {
            background: var(--surface);
            border-color: #D3DEF0;
            color: var(--primary-deep);
            box-shadow: 0 1px 2px rgba(21, 43, 69, 0.03);
        }

        .btn-ghost:hover {
            background: #F4F8FE;
            border-color: var(--primary);
        }

        .btn-ghost:active {
            transform: translateY(1px);
        }

        .nav-cta {
            margin-left: 8px;
            min-height: 42px;
            padding: 0 18px;
            font-size: 14px;
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            margin-left: auto;
            border: 1px solid var(--border);
            background: #fff;
            border-radius: 10px;
            color: var(--heading);
            cursor: pointer;
        }

        .nav-toggle svg {
            width: 22px;
            height: 22px;
        }

        .mobile-nav {
            display: none;
        }

        @media (max-width: 1023px) {
            .desktop-nav {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .mobile-nav.open {
                display: block;
                border-top: 1px solid var(--border);
                background: #fff;
                padding: 8px 24px 20px;
            }

            .mobile-nav .nav-item {
                display: flex;
                width: 100%;
                justify-content: flex-start;
                margin: 2px 0;
                min-height: 44px;
                border: none;
                box-shadow: none;
            }

            .mobile-nav .nav-item.is-active {
                background: #E8F1FF;
                box-shadow: none;
            }

            .mobile-nav .btn {
                display: flex;
                width: 100%;
                margin-top: 12px;
            }
        }

        .category-hero {
            position: relative;
            background:
                linear-gradient(100deg, rgba(255, 255, 255, 0.98) 20%, rgba(249, 251, 254, 0.92) 45%, rgba(246, 248, 251, 0.85) 70%),
                url("/assets/images/backpic/back-1.png") no-repeat right center / cover;
            border-bottom: 1px solid var(--border);
            padding: 72px 0 54px;
        }

        .category-hero .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
            color: var(--primary);
            background: rgba(45, 108, 223, 0.08);
            border: 1px solid #D5E4F7;
            border-radius: 999px;
            padding: 5px 12px;
            font-size: 13px;
            font-weight: 600;
        }

        .category-hero h1 {
            margin: 0;
            font-size: clamp(30px, 5vw, 44px);
            line-height: 1.2;
            letter-spacing: -0.01em;
            color: var(--heading);
            max-width: 720px;
            font-weight: 800;
        }

        .category-hero .hero-sub {
            margin: 18px 0 0;
            font-size: 17px;
            color: var(--muted);
            max-width: 620px;
            line-height: 1.8;
        }

        .crumb {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--muted);
            font-size: 13px;
            margin-bottom: 20px;
        }

        .crumb a {
            color: var(--heading);
            font-weight: 500;
        }

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

        .crumb i {
            font-style: normal;
            color: #A7B5C7;
        }

        .category-document {
            padding: 64px 0 16px;
        }

        .category-layout-grid {
            display: block;
        }

        @media (min-width: 1024px) {
            .category-layout-grid {
                display: grid;
                grid-template-columns: 7rem 1fr;
            }
        }

        @media (min-width: 1024px) {
            .category-wrap-main {
                display: grid;
                grid-template-columns: minmax(210px, 210px) 1fr;
                gap: 48px;
                align-items: start;
            }
        }

        @media (min-width: 1280px) {
            .category-wrap-main {
                grid-template-columns: minmax(240px, 260px) 1fr;
                gap: 64px;
            }
        }

        .toc-sidebar {
            position: sticky;
            top: 104px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 20px;
            box-shadow: var(--shadow-card);
        }

        .side-heading {
            font-size: 13px;
            font-weight: 700;
            color: var(--heading);
            letter-spacing: 0.08em;
            padding: 0 6px 12px;
            border-bottom: 1px solid var(--border);
        }

        .anchor-list {
            display: flex;
            flex-direction: column;
            gap: 2px;
            margin-top: 12px;
        }

        .anchor-list a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 11px 12px;
            border-radius: 12px;
            color: var(--muted);
            font-size: 14px;
            font-weight: 500;
            line-height: 1.45;
            transition: background 0.2s, color 0.2s, transform 0.2s;
        }

        .anchor-list a:hover {
            background: #F0F5FC;
            color: var(--primary);
            transform: translateX(3px);
            font-weight: 600;
        }

        .anchor-list a .dot {
            flex-shrink: 0;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #BFCFE3;
            margin-top: 9px;
        }

        .anchor-list a:hover .dot {
            background: var(--primary);
        }

        .toc-note {
            margin-top: 20px;
            padding: 14px 14px 12px;
            background: #F7FAFF;
            border-radius: 14px;
            border: 1px solid #E4EDF9;
            font-size: 13px;
            color: var(--muted);
            line-height: 1.7;
        }

        .toc-mobile {
            display: flex;
            gap: 10px;
            overflow-x: auto;
            padding: 2px 2px 10px;
            margin-bottom: 28px;
            scrollbar-width: none;
            -webkit-overflow-scrolling: touch;
        }

        .toc-mobile::-webkit-scrollbar {
            display: none;
        }

        .toc-mobile a {
            flex: 0 0 auto;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: 999px;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--muted);
            font-size: 14px;
            font-weight: 500;
            transition: background 0.2s, color 0.2s, border-color 0.2s;
        }

        .toc-mobile a:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        @media (min-width: 1024px) {
            .toc-mobile {
                display: none;
            }
        }

        .content-column {
            min-width: 0;
        }

        .section-block {
            margin-bottom: 64px;
            scroll-margin-top: 110px;
        }

        .section-block h2 {
            display: flex;
            align-items: center;
            gap: 12px;
            margin: 0 0 6px;
            font-size: 26px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--heading);
        }

        .section-block .lead {
            margin: 8px 0 24px;
            color: var(--muted);
            font-size: 16px;
            line-height: 1.8;
        }

        .section-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 36px;
            height: 36px;
            padding: 0 8px;
            background: rgba(201, 154, 44, 0.14);
            color: var(--accent);
            font-size: 14px;
            font-weight: 700;
            border-radius: 10px;
        }

        .problem-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
        }

        .problem-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            border-color: #CFDEF3;
        }

        .problem-card .tag {
            display: inline-block;
            padding: 2px 9px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .tag-soft {
            background: #EAF1FF;
            color: var(--primary);
        }

        .tag-success {
            background: #E7F7F2;
            color: var(--green);
        }

        .tag-gold {
            background: #FBF4E4;
            color: #9E741A;
        }

        .problem-card h3 {
            margin: 8px 0 8px;
            font-size: 16px;
            font-weight: 700;
            color: var(--heading);
            line-height: 1.5;
        }

        .problem-card p {
            margin: 0;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.8;
        }

        .status-safe {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: var(--green);
            background: #EAF8F3;
            border: 1px solid #C9ECE1;
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
        }

        .status-safe::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--green);
            box-shadow: 0 0 0 3px rgba(33, 166, 122, 0.15);
        }

        .feature-image {
            border-radius: 20px;
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
        }

        .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

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

        .content-copy-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
            color: var(--muted);
            line-height: 1.8;
        }

        .content-copy-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .content-copy-list .ic {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            margin-top: 3px;
            display: grid;
            place-items: center;
            background: #EDF4FF;
            color: var(--primary);
            border-radius: 8px;
            font-size: 14px;
            font-weight: 700;
        }

        .callout {
            margin-top: 18px;
            padding: 16px 18px;
            background: #F7FAFF;
            border-left: 4px solid var(--primary);
            color: var(--muted);
            font-size: 15px;
            line-height: 1.8;
            border-radius: 8px 14px 14px 8px;
        }

        .table-wrap {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
            line-height: 1.7;
            color: var(--heading);
        }

        .data-table th {
            text-align: left;
            background: #F2F6FC;
            color: var(--heading);
            font-weight: 700;
            padding: 14px 18px;
            border-bottom: 1px solid var(--border);
            white-space: nowrap;
        }

        .data-table td {
            padding: 16px 18px;
            border-bottom: 1px solid var(--border);
            color: var(--muted);
            vertical-align: top;
        }

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

        .data-table tbody tr:hover {
            background: #F9FBFE;
        }

        @media (max-width: 640px) {
            .table-wrap {
                overflow-x: auto;
            }

            .data-table {
                min-width: 620px;
            }

            .section-block .lead {
                font-size: 15px;
            }
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .faq-item[open] {
            border-color: #BFD5F4;
            box-shadow: 0 8px 22px rgba(21, 43, 69, 0.06);
        }

        .faq-item summary {
            position: relative;
            list-style: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 21px 60px 21px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--heading);
            line-height: 1.5;
            transition: color 0.2s;
        }

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

        .faq-item summary::before {
            content: "";
            flex-shrink: 0;
            width: 3px;
            height: 22px;
            background: var(--primary);
            border-radius: 6px;
        }

        .faq-item summary:hover {
            color: var(--primary);
        }

        .faq-item summary::after {
            content: "+";
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            width: 30px;
            height: 30px;
            display: grid;
            place-items: center;
            border-radius: 9px;
            border: 1px solid #D8E3F2;
            color: var(--primary);
            font-size: 20px;
            font-weight: 500;
            line-height: 1;
            transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
            background: #F7FAFF;
        }

        .faq-item[open] summary::after {
            transform: translateY(-50%) rotate(45deg);
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .faq-content {
            padding: 0 28px 22px 44px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.9;
        }

        .faq-content p {
            margin: 0 0 10px;
        }

        .faq-content p:last-child {
            margin-bottom: 0;
        }

        @media (max-width: 520px) {
            .faq-item summary {
                font-size: 15px;
                padding-left: 16px;
            }

            .faq-content {
                padding-left: 32px;
                padding-right: 18px;
                font-size: 14px;
            }

            .section-block h2 {
                font-size: 23px;
            }
        }

        .cta-section {
            padding: 24px 0 88px;
            scroll-margin-top: 110px;
        }

        .cta-card {
            position: relative;
            background:
                linear-gradient(135deg, #F8FBFF 0%, #EEF5FF 50%, #EAF2FF 100%);
            border: 1px solid #CDDEF6;
            border-radius: 28px;
            overflow: hidden;
            padding: 48px 48px 46px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            box-shadow: 0 14px 40px rgba(45, 108, 223, 0.08);
        }

        .cta-card::after {
            content: "";
            position: absolute;
            right: -76px;
            top: -76px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(45, 108, 223, 0.05);
        }

        .cta-card h2 {
            margin: 0 0 10px;
            font-size: 28px;
            font-weight: 800;
            color: var(--heading);
            line-height: 1.35;
        }

        .cta-card p {
            margin: 0;
            color: var(--muted);
            font-size: 16px;
            line-height: 1.75;
            max-width: 620px;
        }

        .cta-actions {
            position: relative;
            z-index: 2;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
        }

        .btn-link-neutral {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary-deep);
            font-weight: 600;
            font-size: 15px;
            padding: 8px 2px;
            border-bottom: 1px solid transparent;
            transition: border-color 0.2s ease, color 0.2s ease;
        }

        .btn-link-neutral:hover {
            color: var(--primary);
            border-color: var(--primary);
        }

        .site-footer {
            background: #101E30;
            color: #C7D3E0;
            padding: 64px 0 24px;
        }

        .site-footer .logo {
            color: #fff;
        }

        .site-footer .logo-text {
            color: #fff;
        }

        .site-footer .logo-text span {
            color: #7DA6EB;
        }

        .site-footer .logo-mark {
            background: linear-gradient(145deg, #3A78E8, #1A56C5);
        }

        .footer-brand p {
            color: #9FB0C3;
            font-size: 14px;
            line-height: 1.9;
            margin: 16px 0 0;
            max-width: 390px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
        }

        .footer-col h4 {
            color: #E8EEF6;
            font-size: 15px;
            font-weight: 600;
            margin: 4px 0 18px;
            letter-spacing: 0.03em;
        }

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

        .footer-col li {
            margin-bottom: 10px;
        }

        .footer-col a {
            color: #B6C6D9;
            font-size: 14px;
            line-height: 1.7;
            transition: color 0.2s ease;
        }

        .footer-col a:hover {
            color: #7DA6EB;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            margin-top: 52px;
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #8596A8;
            font-size: 13px;
            line-height: 1.7;
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 560px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

            .footer-bottom {
                flex-direction: column;
            }

            .cta-card {
                padding: 36px 28px 32px;
            }
        }