/* roulang page: index */
:root {
            --brand: #0A4637;
            --brand-deep: #062B22;
            --brand-mid: #0D5C47;
            --brand-light: #E7F0EC;
            --pop: #CF4A13;
            --pop-hover: #E25A1D;
            --paper: #F5F3EC;
            --ink: #182620;
            --muted: #5C6F68;
            --line: #DCE4DF;
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
            --shadow: 0 10px 30px rgba(8, 40, 32, 0.08);
            --shadow-hover: 0 16px 44px rgba(8, 40, 32, 0.15);
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 92px;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--paper);
            color: var(--ink);
            line-height: 1.8;
            overflow-x: hidden;
        }

        a,
        button {
            -webkit-tap-highlight-color: transparent;
        }

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

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

        ul,
        ol {
            padding: 0;
            margin: 0;
        }

        ::selection {
            background: rgba(207, 74, 19, 0.18);
            color: var(--brand-deep);
        }

        .site-container {
            max-width: 80rem;
            margin-inline: auto;
            padding-inline: 1.25rem;
        }

        @media (min-width: 768px) {
            .site-container {
                padding-inline: 2rem;
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            min-height: 44px;
            padding: .65rem 1.35rem;
            border-radius: .7rem;
            font-weight: 700;
            font-size: .95rem;
            line-height: 1;
            transition: all .22s ease;
            border: 1px solid transparent;
            cursor: pointer;
            white-space: nowrap;
        }

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

        .btn-primary {
            background: var(--pop);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 8px 22px rgba(207, 74, 19, .2);
        }

        .btn-primary:hover {
            background: var(--pop-hover);
            transform: translateY(-1px);
            box-shadow: 0 14px 32px rgba(207, 74, 19, .28);
        }

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

        .btn-ghost-light {
            border: 1px solid rgba(255, 255, 255, .7);
            color: #fff;
            background: transparent;
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, .12);
            transform: translateY(-1px);
        }

        .btn-ghost-dark {
            border: 1px solid var(--brand);
            color: var(--brand);
            background: transparent;
        }

        .btn-ghost-dark:hover {
            background: var(--brand-light);
            transform: translateY(-1px);
        }

        .badge-chip {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            border-radius: 999px;
            background: rgba(255, 255, 255, .12);
            color: #fff;
            font-size: .75rem;
            padding: .25rem .8rem;
            line-height: 1.4;
            border: 1px solid rgba(255, 255, 255, .14);
        }

        .badge-dark {
            display: inline-flex;
            align-items: center;
            background: rgba(10, 70, 55, .08);
            color: var(--brand);
            border-radius: 999px;
            padding: .3rem .8rem;
            font-size: .78rem;
            line-height: 1.2;
            border: 1px solid rgba(10, 70, 55, .08);
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            color: var(--brand);
            font-size: .82rem;
            font-weight: 700;
            letter-spacing: .02em;
        }

        .eyebrow:before {
            content: "";
            width: 1.6rem;
            height: 2px;
            background: var(--pop);
            border-radius: 99px;
        }

        .card-panel {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow);
        }

        .card-hover {
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }

        .card-hover:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(10, 70, 55, .25);
        }

        .hero-bg-image {
            background:
                linear-gradient(100deg, rgba(5, 38, 30, .96) 15%, rgba(10, 70, 55, .82) 52%, rgba(10, 70, 55, .5) 100%),
                url('/assets/images/backpic/back-1.webp');
            background-color: #0A4637;
            background-size: cover;
            background-position: center;
        }

        .dark-cta-bg {
            background:
                radial-gradient(circle at 78% 18%, rgba(255, 255, 255, .08), transparent 24rem),
                radial-gradient(circle at 10% 90%, rgba(226, 90, 29, .16), transparent 20rem),
                linear-gradient(135deg, #062B22, #0A4637);
        }

        .feature-overlay {
            background: linear-gradient(180deg, rgba(6, 43, 34, .05), rgba(6, 43, 34, .72) 76%);
        }

        .section-divider {
            border-top: 1px solid var(--line);
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            color: rgba(255, 255, 255, .76);
            font-weight: 600;
            font-size: .9rem;
            padding: .5rem .2rem;
            transition: color .2s;
        }

        .nav-link:hover {
            color: #fff;
        }

        .nav-link.active {
            color: #fff;
        }

        .nav-link.active:after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: 99px;
            background: var(--pop);
        }

        @media (max-width: 639px) {
            .nav-link.active:after {
                display: none;
            }
        }

        .footer-link {
            color: rgba(255, 255, 255, .7);
            font-size: .88rem;
            line-height: 2;
            transition: color .2s;
        }

        .footer-link:hover {
            color: #fff;
        }

        .footer-title {
            color: rgba(255, 255, 255, .48);
            font-size: .78rem;
            font-weight: 700;
            letter-spacing: .08em;
            margin-bottom: .8rem;
        }

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

        details.faq-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 1rem;
            overflow: hidden;
        }

        details.faq-item summary {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 1rem;
            cursor: pointer;
            padding: 1.1rem 1.25rem;
            list-style: none;
            line-height: 1.6;
            font-weight: 800;
            color: var(--ink);
            transition: background .2s;
        }

        details.faq-item:hover {
            border-color: rgba(10, 70, 55, .3);
        }

        details.faq-item[open] {
            border-color: rgba(10, 70, 55, .35);
            box-shadow: var(--shadow);
        }

        .faq-icon {
            flex: 0 0 auto;
            width: 1.4rem;
            height: 1.4rem;
            border-radius: 999px;
            border: 1px solid var(--brand);
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            transition: transform .25s;
        }

        details.faq-item[open] .faq-icon {
            transform: rotate(45deg);
            background: var(--brand);
            color: #fff;
        }

        .faq-body {
            padding: 0 1.25rem 1.1rem;
            color: var(--muted);
            font-size: .93rem;
            line-height: 1.9;
            max-width: 52rem;
        }

        .input-q {
            width: 100%;
            border: 1px solid var(--line);
            border-radius: .7rem;
            background: #fff;
            min-height: 44px;
            padding: .65rem .9rem;
            color: var(--ink);
            transition: border-color .2s, box-shadow .2s;
        }

        .input-q:focus {
            outline: none;
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(10, 70, 55, .12);
        }

        .img-frame {
            border-radius: var(--radius-xl);
            overflow: hidden;
        }

/* roulang page: article */
:root {
            --brand: #0A4637;
            --brand-deep: #062B22;
            --brand-light: #0D5C47;
            --brand-soft: #E7F0EC;
            --paper: #F5F3EC;
            --paper-light: #FBFBF7;
            --pop: #CF4A13;
            --pop-bright: #E25A1D;
            --ink: #182620;
            --muted: #5B6F66;
            --border: #DCE4DF;
            --shadow-sm: 0 8px 20px rgba(8, 40, 32, .06);
            --shadow-md: 0 12px 30px rgba(8, 40, 32, .09);
            --shadow-lg: 0 20px 50px rgba(8, 40, 32, .16);
            --radius-sm: .5rem;
            --radius-card: 1.25rem;
            --radius-hero: 1.75rem;
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

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

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

        body {
            margin: 0;
            background: #fff;
            color: var(--ink);
            font-family: var(--font);
            line-height: 1.8;
            text-rendering: optimizeLegibility;
        }

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

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

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

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

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

        .site-container {
            width: 100%;
            max-width: 80rem;
            margin-inline: auto;
            padding-inline: 1.25rem;
        }

        @media (min-width: 768px) {
            .site-container {
                padding-inline: 2rem;
            }
        }

        .skip-link {
            position: fixed;
            top: -100px;
            left: 1rem;
            z-index: 9999;
            background: var(--brand);
            color: #fff;
            padding: .7rem 1.1rem;
            border-radius: .5rem;
            transition: top .2s;
        }

        .skip-link:focus {
            top: 1rem;
            color: #fff;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--brand-light);
            outline-offset: 3px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            min-height: 46px;
            padding: 0 1.3rem;
            border-radius: .55rem;
            font-weight: 700;
            font-size: .96rem;
            line-height: 1;
            border: 1px solid transparent;
            transition: background .2s ease, border-color .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
        }

        .btn-primary {
            background: var(--pop);
            color: #fff;
            box-shadow: 0 8px 18px rgba(207, 74, 19, .2);
        }

        .btn-primary:hover {
            background: var(--pop-bright);
            transform: translateY(-1px);
            box-shadow: 0 12px 22px rgba(207, 74, 19, .28);
        }

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

        .btn-line {
            background: transparent;
            border-color: rgba(255, 255, 255, .75);
            color: #fff;
        }

        .btn-line:hover {
            background: rgba(255, 255, 255, .1);
            border-color: #fff;
        }

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

        .btn-outline:hover {
            background: var(--brand-soft);
            border-color: var(--brand-light);
        }

        .btn-narrow {
            min-height: 40px;
            padding: 0 1rem;
        }

        .site-header {
            position: -webkit-sticky;
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, .96);
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(220, 228, 223, .9);
            transition: box-shadow .25s ease;
        }

        .site-header.is-scrolled {
            box-shadow: 0 8px 28px rgba(8, 40, 32, .08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            height: 74px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: .65rem;
            color: var(--ink);
        }

        .logo-text {
            font-size: 1.16rem;
            font-weight: 900;
            letter-spacing: -.02em;
            white-space: nowrap;
        }

        .desktop-nav {
            display: none;
            align-items: center;
            gap: 1.6rem;
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            font-size: .97rem;
            font-weight: 600;
            color: rgba(24, 38, 32, .82);
            padding: .5rem .1rem;
            transition: color .2s ease;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: var(--brand);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .25s ease;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--brand);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: .7rem;
        }

        .header-state {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            font-size: .8rem;
            font-weight: 700;
            color: var(--brand);
            background: var(--brand-soft);
            border-radius: 99px;
            padding: .25rem .8rem;
        }

        .header-state::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #2fbf8f;
            box-shadow: 0 0 0 3px rgba(47, 191, 143, .16);
        }

        .mobile-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: .65rem;
            color: var(--ink);
            border: 1px solid var(--border);
            transition: border-color .2s ease, background .2s ease;
        }

        .mobile-toggle:hover {
            border-color: var(--brand);
            background: var(--brand-soft);
        }

        @media (min-width: 1024px) {
            .desktop-nav {
                display: flex;
            }

            .mobile-toggle {
                display: none;
            }
        }

        .mobile-drawer {
            display: none;
            position: absolute;
            left: 0;
            right: 0;
            top: 74px;
            z-index: 55;
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
            padding: 1rem 1.25rem 1.5rem;
        }

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

        .mobile-drawer .mobile-nav-list {
            display: flex;
            flex-direction: column;
            gap: .1rem;
        }

        .mobile-drawer .mobile-nav-link {
            display: flex;
            align-items: center;
            min-height: 48px;
            padding: 0 .35rem;
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--ink);
            border-bottom: 1px solid #EDF1EE;
            transition: color .2s ease;
        }

        .mobile-drawer .mobile-nav-link:hover,
        .mobile-drawer .mobile-nav-link.active {
            color: var(--brand);
        }

        .mobile-drawer .mobile-cta {
            margin-top: 1rem;
            display: grid;
            gap: .65rem;
        }

        @media (min-width: 1024px) {
            .mobile-drawer,
            .mobile-drawer.is-open {
                display: none;
            }
        }

        .detail-hero {
            position: relative;
            overflow: hidden;
            background:
                linear-gradient(103deg, rgba(6, 43, 34, .96) 0%, rgba(10, 70, 55, .9) 42%, rgba(13, 92, 71, .72) 100%),
                url("/assets/images/backpic/back-1.webp") center / cover no-repeat;
            color: #fff;
        }

        .detail-hero-inner {
            position: relative;
            z-index: 2;
            padding: 3.5rem 0 3.8rem;
        }

        @media (min-width: 768px) {
            .detail-hero-inner {
                padding: 5rem 0 5.5rem;
            }
        }

        .detail-breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: .45rem;
            font-size: .88rem;
            color: rgba(255, 255, 255, .72);
            margin-bottom: 1.6rem;
        }

        .detail-breadcrumb a {
            transition: color .2s ease;
        }

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

        .breadcrumb-sep {
            color: rgba(255, 255, 255, .4);
            display: inline-flex;
            margin: 0 .1rem;
        }

        .detail-hero-title {
            font-size: clamp(1.9rem, 4vw, 3.2rem);
            font-weight: 900;
            line-height: 1.2;
            max-width: 900px;
            letter-spacing: -.02em;
        }

        .detail-hero-desc {
            margin-top: 1rem;
            max-width: 760px;
            font-size: 1.04rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, .78);
        }

        .detail-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: .85rem;
            margin-top: 1.6rem;
        }

        .detail-meta span {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            background: rgba(255, 255, 255, .12);
            border-radius: 99px;
            padding: .28rem .85rem;
            font-size: .86rem;
            font-weight: 600;
            color: rgba(255, 255, 255, .86);
        }

        .article-main-area {
            padding: 3rem 0 4rem;
        }

        @media (min-width: 768px) {
            .article-main-area {
                padding: 5rem 0 6rem;
            }
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr);
            gap: 2rem;
        }

        @media (min-width: 1024px) {
            .article-layout {
                grid-template-columns: minmax(0, 1fr) 21rem;
                gap: 2.8rem;
                align-items: start;
            }
        }

        .article-panel {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 1.5rem;
            padding: 1.6rem;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        @media (min-width: 640px) {
            .article-panel {
                padding: 2.2rem;
            }
        }

        @media (min-width: 1024px) {
            .article-panel {
                padding: 2.8rem;
            }
        }

        .cms-content {
            font-size: 1.06rem;
            line-height: 1.9;
            color: #21352d;
            word-break: break-word;
        }

        .cms-content > * + * {
            margin-top: 0;
        }

        .cms-content p,
        .cms-content ul,
        .cms-content ol,
        .cms-content figure,
        .cms-content table,
        .cms-content blockquote {
            margin: 0 0 1.45em;
        }

        .cms-content h2 {
            font-size: 1.5rem;
            font-weight: 800;
            line-height: 1.45;
            color: var(--brand-deep);
            margin: 2.2rem 0 1.1rem;
            padding-bottom: .55rem;
            border-bottom: 1px solid #E4EDE8;
        }

        .cms-content h3 {
            font-size: 1.24rem;
            font-weight: 800;
            line-height: 1.5;
            color: var(--brand);
            margin: 1.8rem 0 .85rem;
        }

        .cms-content h4 {
            font-size: 1.06rem;
            font-weight: 800;
            color: var(--ink);
            margin: 1.4rem 0 .7rem;
        }

        .cms-content ul,
        .cms-content ol {
            padding-left: 1.4rem;
        }

        .cms-content ul {
            list-style: disc;
        }

        .cms-content ol {
            list-style: decimal;
        }

        .cms-content li {
            margin: 0 0 .6rem;
            padding-left: .2rem;
        }

        .cms-content a {
            color: var(--brand-light);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color .2s ease;
        }

        .cms-content a:hover {
            color: var(--pop);
        }

        .cms-content blockquote {
            background: #EFF5F2;
            border-left: 4px solid var(--brand);
            padding: 1rem 1.3rem;
            border-radius: .35rem .8rem .8rem .35rem;
            color: #35554a;
            font-size: 1em;
        }

        .cms-content img {
            border-radius: 1.1rem;
            margin: 1.6rem 0;
        }

        .cms-content table {
            width: 100%;
            border-collapse: collapse;
            font-size: .95rem;
        }

        .cms-content th,
        .cms-content td {
            border: 1px solid var(--border);
            padding: .7rem .8rem;
            text-align: left;
        }

        .cms-content th {
            background: var(--brand-soft);
            color: var(--brand-deep);
            font-weight: 800;
        }

        .cms-content pre {
            background: var(--brand-deep);
            color: #EDF7F2;
            border-radius: 1rem;
            padding: 1.2rem 1.4rem;
            overflow-x: auto;
            margin: 0 0 1.45em;
            font-size: .93rem;
        }

        .cms-content code {
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
        }

        .cms-content p code,
        .cms-content li code {
            background: var(--brand-soft);
            border-radius: .35rem;
            padding: .12rem .4rem;
            color: var(--brand-deep);
        }

        .taxonomy-tags {
            display: flex;
            flex-wrap: wrap;
            gap: .5rem;
            margin-top: 2rem;
            padding-top: 1.6rem;
            border-top: 1px solid #EBF0ED;
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            background: var(--brand-soft);
            color: var(--brand);
            border-radius: 99px;
            font-size: .84rem;
            font-weight: 700;
            padding: .3rem .85rem;
        }

        .article-actions-bottom {
            display: grid;
            grid-template-columns: 1fr;
            gap: .75rem;
            margin-top: 2rem;
            padding-top: 1.4rem;
            border-top: 1px solid var(--border);
        }

        @media (min-width: 600px) {
            .article-actions-bottom {
                grid-template-columns: 1fr 1fr;
            }
        }

        .article-actions-bottom .action-card {
            display: flex;
            flex-direction: column;
            gap: .25rem;
            background: var(--paper);
            border-radius: 1rem;
            padding: 1rem 1.1rem;
            transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
        }

        .article-actions-bottom .action-card:hover {
            background: var(--brand-soft);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        .action-card strong {
            font-size: .98rem;
            font-weight: 800;
            color: var(--brand-deep);
        }

        .action-card span {
            font-size: .85rem;
            color: var(--muted);
        }

        .not-found-block {
            text-align: center;
            padding: 3rem 1rem 3.5rem;
        }

        .not-found-block svg {
            margin: 0 auto 1.4rem;
            opacity: .85;
        }

        .not-found-block h2 {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--ink);
        }

        .not-found-block p {
            max-width: 28rem;
            margin: .7rem auto 1.7rem;
            color: var(--muted);
            font-size: .98rem;
        }

        .side-column {
            display: grid;
            gap: 1.5rem;
            align-content: start;
        }

        .side-card {
            background: var(--paper-light);
            border: 1px solid var(--border);
            border-radius: 1.3rem;
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
        }

        .side-title {
            display: flex;
            align-items: center;
            gap: .55rem;
            font-size: 1.06rem;
            font-weight: 900;
            margin-bottom: 1rem;
            color: var(--brand-deep);
        }

        .side-title svg {
            width: 1.25rem;
            height: 1.25rem;
            color: var(--brand);
        }

        .side-nav-list {
            display: flex;
            flex-direction: column;
            gap: .2rem;
        }

        .side-nav-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: .8rem;
            padding: .6rem .5rem;
            border-radius: .65rem;
            font-size: .95rem;
            font-weight: 600;
            color: var(--ink);
            transition: background .2s ease, color .2s ease, padding-left .2s ease;
        }

        .side-nav-link:hover {
            background: var(--brand-soft);
            color: var(--brand);
            padding-left: .7rem;
        }

        .side-nav-link svg {
            width: .9rem;
            height: .9rem;
            color: var(--muted);
            transition: transform .2s ease;
        }

        .side-nav-link:hover svg {
            color: var(--brand);
            transform: translateX(3px);
        }

        .side-image {
            border-radius: 1rem;
            overflow: hidden;
            margin-bottom: 1.15rem;
        }

        .side-image img {
            width: 100%;
            height: auto;
            -o-object-fit: cover;
            object-fit: cover;
            aspect-ratio: 16 / 9;
        }

        .side-card h3 {
            font-size: 1.04rem;
            font-weight: 800;
            color: var(--ink);
        }

        .side-card p {
            font-size: .92rem;
            color: var(--muted);
            margin: .55rem 0 1.1rem;
            line-height: 1.8;
        }

        .side-chip-list {
            display: flex;
            flex-wrap: wrap;
            gap: .5rem;
            margin-top: .9rem;
        }

        .side-chip-list .chip {
            background: #F0F5F2;
            border-radius: 99px;
            color: var(--brand-deep);
            font-size: .83rem;
            font-weight: 600;
            padding: .28rem .8rem;
        }

        .info-card-note {
            border-radius: 1rem;
            background: var(--brand-soft);
            color: var(--brand-deep);
            padding: 1rem;
            font-size: .9rem;
            line-height: 1.8;
            margin-top: 1rem;
        }

        .cta-band {
            position: relative;
            overflow: hidden;
            background: linear-gradient(125deg, #062B22, #0A4637 64%, #0D5C47);
            color: #fff;
            padding: 4.5rem 0;
        }

        @media (min-width: 768px) {
            .cta-band {
                padding: 5.5rem 0;
            }
        }

        .cta-band::before,
        .cta-band::after {
            content: "";
            position: absolute;
            width: 200px;
            height: 200px;
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 999px;
        }

        .cta-band::before {
            top: -100px;
            right: 8%;
        }

        .cta-band::after {
            bottom: -140px;
            left: 4%;
            width: 280px;
            height: 280px;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 1.5rem;
        }

        @media (min-width: 900px) {
            .cta-inner {
                flex-direction: row;
                align-items: center;
                justify-content: space-between;
            }
        }

        .cta-band h2 {
            font-size: clamp(1.6rem, 2.6vw, 2.2rem);
            font-weight: 900;
            line-height: 1.3;
            letter-spacing: -.02em;
        }

        .cta-band p {
            margin-top: .8rem;
            font-size: 1.02rem;
            color: rgba(255, 255, 255, .78);
            max-width: 44rem;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: .8rem;
            flex-shrink: 0;
        }

        .site-footer {
            background: #052017;
            color: #fff;
        }

        .footer-top {
            display: grid;
            gap: 2rem;
            padding: 4rem 0 3rem;
        }

        @media (min-width: 768px) {
            .footer-top {
                grid-template-columns: repeat(2, 1fr);
                padding: 5rem 0 4rem;
            }
        }

        @media (min-width: 1024px) {
            .footer-top {
                grid-template-columns: repeat(12, 1fr);
            }
        }

        .footer-brand-col {
            grid-column: span 12;
        }

        @media (min-width: 1024px) {
            .footer-brand-col {
                grid-column: span 4;
            }
        }

        .footer-nav-col {
            grid-column: span 6;
        }

        @media (min-width: 1024px) {
            .footer-nav-col {
                grid-column: span 2;
            }
        }

        .footer-info-col,
        .footer-tip-col {
            grid-column: span 12;
        }

        @media (min-width: 768px) {
            .footer-info-col,
            .footer-tip-col {
                grid-column: span 6;
            }
        }

        @media (min-width: 1024px) {
            .footer-info-col {
                grid-column: span 3;
            }

            .footer-tip-col {
                grid-column: span 3;
            }
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: .7rem;
            color: #fff;
        }

        .footer-brand-name {
            font-size: 1.17rem;
            font-weight: 900;
            letter-spacing: -.02em;
        }

        .footer-desc {
            margin-top: 1rem;
            max-width: 18rem;
            color: rgba(255, 255, 255, .62);
            font-size: .95rem;
            line-height: 1.9;
        }

        .footer-title {
            font-size: .92rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
            opacity: .95;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: .4rem;
        }

        .footer-link {
            color: rgba(255, 255, 255, .68);
            font-size: .92rem;
            transition: color .2s ease, padding-left .2s ease;
        }

        .footer-link:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-info-list {
            display: flex;
            flex-direction: column;
            gap: .45rem;
            color: rgba(255, 255, 255, .7);
            font-size: .92rem;
        }

        .footer-info-list .dot-line {
            display: flex;
            align-items: center;
            gap: .5rem;
        }

        .footer-info-list .dot {
            width: .4rem;
            height: .4rem;
            border-radius: 50%;
            background: #67d3a9;
            flex-shrink: 0;
        }

        .footer-tip-text {
            color: rgba(255, 255, 255, .65);
            font-size: .93rem;
            line-height: 1.9;
        }

        .footer-note-box {
            margin-top: 1.3rem;
            border: 1px solid rgba(255, 255, 255, .1);
            background: rgba(255, 255, 255, .05);
            border-radius: 1.1rem;
            padding: 1rem 1.2rem;
        }

        .footer-note-box strong {
            color: #fff;
            font-size: .95rem;
        }

        .footer-note-box p {
            margin-top: .3rem;
            color: rgba(255, 255, 255, .65);
            font-size: .88rem;
            line-height: 1.8;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 1.6rem 0 2rem;
            color: rgba(255, 255, 255, .45);
            font-size: .85rem;
        }

        .article-hero-state {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            background: rgba(255, 255, 255, .12);
            color: #fff;
            border-radius: 99px;
            padding: .3rem 1rem;
            margin-bottom: 1.2rem;
            font-size: .85rem;
            font-weight: 600;
            width: -webkit-fit-content;
            width: fit-content;
        }

        .article-hero-state::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #f4bd74;
            box-shadow: 0 0 0 3px rgba(244, 189, 116, .2);
        }

/* roulang page: category1 */
:root {
            --brand: #0A4637;
            --brand-active: #0D5C47;
            --brand-soft: #E7F0EC;
            --pop: #CF4A13;
            --pop-hover: #E25A1D;
            --paper: #F5F3EC;
            --ink: #182620;
            --muted: #65766F;
            --line: #DCE4DF;
            --dark: #052017;
            --deep-gradient: linear-gradient(135deg, #062B22, #0A4637);
            --soft-shadow: 0 10px 30px rgba(8, 40, 32, 0.08);
            --hover-shadow: 0 16px 44px rgba(8, 40, 32, 0.15);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 90px;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: #ffffff;
            color: var(--ink);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

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

        .skip-link {
            position: absolute;
            left: -9999px;
            top: 0;
            background: var(--dark);
            color: #fff;
            padding: 10px 16px;
            border-radius: 0 0 10px 0;
            z-index: 100;
        }

        .skip-link:focus {
            left: 0;
            top: 0;
        }

        .site-container {
            width: 100%;
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 768px) {
            .site-container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(220, 228, 223, 0.75);
            box-shadow: 0 1px 12px rgba(5, 32, 23, 0.04);
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            font-size: 1rem;
            font-weight: 600;
            color: rgba(24, 38, 32, 0.75);
            padding: 0.45rem 0.15rem;
            transition: color 0.2s ease;
            white-space: nowrap;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            border-radius: 99px;
            background: var(--brand);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.2s ease;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--brand);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }

        .btn-pop {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.55rem;
            min-height: 46px;
            padding: 0.7rem 1.55rem;
            border-radius: 0.6rem;
            background: var(--pop);
            color: #fff;
            border: 1px solid transparent;
            font-weight: 700;
            font-size: 1rem;
            line-height: 1;
            box-shadow: 0 8px 18px rgba(207, 74, 19, 0.18);
            transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
            white-space: nowrap;
        }

        .btn-pop:hover {
            background: var(--pop-hover);
            transform: translateY(-1px);
            box-shadow: 0 12px 26px rgba(207, 74, 19, 0.24);
        }

        .btn-pop:active {
            transform: translateY(0);
            box-shadow: 0 6px 14px rgba(207, 74, 19, 0.18);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.55rem;
            min-height: 46px;
            padding: 0.7rem 1.55rem;
            border-radius: 0.6rem;
            background: transparent;
            color: var(--brand);
            border: 1px solid rgba(10, 70, 55, 0.32);
            font-weight: 700;
            font-size: 1rem;
            line-height: 1;
            transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
            white-space: nowrap;
        }

        .btn-outline:hover {
            background: var(--brand-soft);
            border-color: var(--brand);
            transform: translateY(-1px);
        }

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

        .btn-white-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.55rem;
            min-height: 46px;
            padding: 0.7rem 1.55rem;
            border-radius: 0.6rem;
            background: rgba(255, 255, 255, 0.05);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.78);
            font-weight: 700;
            font-size: 1rem;
            line-height: 1;
            transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
            white-space: nowrap;
        }

        .btn-white-outline:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: #fff;
            transform: translateY(-1px);
        }

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

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            color: var(--brand);
            font-weight: 800;
            padding: 0.5rem 0;
            border-bottom: 1px solid transparent;
            transition: border-color 0.2s ease, color 0.2s ease;
        }

        .btn-text:hover {
            color: var(--brand-active);
            border-bottom-color: currentColor;
        }

        .hero-band {
            position: relative;
            color: #fff;
            background-image: linear-gradient(105deg, rgba(4, 32, 25, 0.94) 0%, rgba(6, 43, 34, 0.86) 44%, rgba(10, 70, 55, 0.62) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: 1px solid rgba(255, 255, 255, 0.28);
            background: rgba(255, 255, 255, 0.1);
            border-radius: 999px;
            color: rgba(255, 255, 255, 0.92);
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            padding: 0.4rem 0.9rem;
        }

        .quote-band {
            color: #fff;
            background-image: linear-gradient(100deg, rgba(6, 43, 34, 0.82), rgba(5, 32, 23, 0.78)), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
        }

        .cta-gradient {
            background: var(--deep-gradient);
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--brand);
            font-size: 0.83rem;
            font-weight: 900;
            letter-spacing: 0.08em;
        }

        .section-tag::before {
            content: "";
            display: inline-block;
            width: 9px;
            height: 9px;
            border-radius: 2px;
            background: var(--pop);
            transform: rotate(45deg);
        }

        .content-lead {
            color: #4f6158;
            line-height: 2;
        }

        .media-shadow {
            border-radius: 1.5rem;
            overflow: hidden;
            box-shadow: var(--soft-shadow);
        }

        .project-row {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0.75rem;
            padding: 1.45rem 0.75rem;
            border-bottom: 1px solid rgba(220, 228, 223, 0.78);
            transition: background 0.2s ease, padding 0.2s ease;
        }

        .project-row:last-child {
            border-bottom: 0;
        }

        .project-row:hover {
            background: rgba(255, 255, 255, 0.56);
            padding-left: 1rem;
        }

        .project-icon {
            display: inline-flex;
            flex: 0 0 2.4rem;
            width: 2.4rem;
            height: 2.4rem;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            background: rgba(10, 70, 55, 0.1);
            color: var(--brand);
            font-weight: 900;
            font-size: 0.9rem;
        }

        .project-row:hover .project-icon {
            background: var(--brand);
            color: #fff;
        }

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

        .feature-list li {
            display: flex;
            gap: 0.85rem;
            align-items: flex-start;
            padding: 0.85rem 0;
            border-bottom: 1px solid rgba(220, 228, 223, 0.75);
        }

        .feature-list li:last-child {
            border-bottom: 0;
        }

        .feature-list svg {
            flex: 0 0 auto;
            margin-top: 0.5rem;
        }

        .footer-title {
            font-size: 1rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.85rem;
            letter-spacing: 0.04em;
        }

        .footer-link {
            display: inline-block;
            color: rgba(255, 255, 255, 0.72);
            font-size: 0.9rem;
            line-height: 2.2;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .footer-link:hover {
            color: #fff;
            padding-left: 4px;
        }

        .icon-ring {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex: 0 0 1.9rem;
            width: 1.9rem;
            height: 1.9rem;
            color: var(--pop);
            background: rgba(207, 74, 19, 0.1);
            border-radius: 999px;
        }

        .faq-wrap {
            max-width: 44rem;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid rgba(220, 228, 223, 0.95);
            border-radius: 1.1rem;
            padding: 0;
            overflow: hidden;
            box-shadow: 0 4px 18px rgba(8, 40, 32, 0.04);
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .faq-item:hover {
            border-color: rgba(10, 70, 55, 0.3);
            box-shadow: 0 8px 22px rgba(8, 40, 32, 0.08);
        }

        .faq-item + .faq-item {
            margin-top: 1rem;
        }

        .faq-item summary {
            list-style: none;
            padding: 1.05rem 3.1rem 1.05rem 1.3rem;
            font-weight: 800;
            color: #122720;
            cursor: pointer;
            position: relative;
        }

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

        .faq-item summary::after {
            content: "+";
            position: absolute;
            right: 1.2rem;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.45rem;
            line-height: 1;
            font-weight: 500;
            color: var(--brand);
            transition: transform 0.2s ease;
        }

        .faq-item[open] summary::after {
            content: "";
            color: var(--brand);
            transition: none;
        }

        .faq-item[open] summary {
            border-bottom: 1px solid rgba(220, 228, 223, 0.7);
        }

        .faq-item[open] summary::after {
            content: "−";
        }

        .faq-content {
            padding: 1rem 1.6rem 1.35rem 1.3rem;
            color: #53675c;
            font-size: 0.96rem;
            line-height: 1.9;
        }

        .mobile-drawer {
            background: #fff;
            box-shadow: -12px 0 34px rgba(5, 32, 23, 0.18);
        }

        .drawer-link {
            display: flex;
            align-items: center;
            min-height: 46px;
            padding: 0.7rem 0.5rem;
            font-size: 1rem;
            font-weight: 700;
            color: rgba(24, 38, 32, 0.78);
            border-bottom: 1px solid rgba(220, 228, 223, 0.6);
            transition: color 0.2s ease, background 0.2s ease;
        }

        .drawer-link:hover,
        .drawer-link.active {
            color: var(--brand);
            background: var(--brand-soft);
        }

        @media (min-width: 1024px) {
            .project-row {
                grid-template-columns: auto 1fr auto;
                align-items: center;
                gap: 1.1rem;
            }
        }

/* roulang page: category3 */
:root {
            --brand: #0A4637;
            --brand-dark: #062B22;
            --brand-soft: #0D5C47;
            --brand-light: #E7F0EC;
            --pop: #CF4A13;
            --pop-hover: #E25A1D;
            --paper: #F5F3EC;
            --ink: #182620;
            --line: #DCE4DF;
            --shadow-card: 0 10px 30px rgba(8, 40, 32, .08);
            --shadow-hover: 0 16px 44px rgba(8, 40, 32, .15);
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            background: #fff;
            color: var(--ink);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            line-height: 1.8;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        .site-container {
            width: 100%;
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 768px) {
            .site-container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .hero-bg {
            background-image: linear-gradient(108deg, rgba(6, 43, 34, .94) 0%, rgba(10, 70, 55, .84) 45%, rgba(10, 70, 55, .34) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }
        .cta-bg {
            background-image: linear-gradient(120deg, rgba(6, 43, 34, .96), rgba(10, 70, 55, .88)), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
        }
        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 0.45rem 0.3rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: rgba(24, 38, 32, .76);
            transition: color .2s ease;
        }
        .nav-link:hover {
            color: var(--brand);
        }
        .nav-link.active {
            color: var(--brand);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--brand);
            border-radius: 2px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            min-height: 46px;
            padding: .6rem 1.25rem;
            border-radius: .5rem;
            background: var(--pop);
            color: #fff;
            font-weight: 600;
            white-space: nowrap;
            border: 1px solid transparent;
            transition: background .2s, transform .2s, box-shadow .2s;
        }
        .btn-primary:hover {
            background: var(--pop-hover);
            transform: translateY(-1px);
            box-shadow: 0 12px 28px rgba(207, 74, 19, .25);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            min-height: 46px;
            padding: .6rem 1.25rem;
            border-radius: .5rem;
            background: transparent;
            color: #fff;
            font-weight: 600;
            white-space: nowrap;
            border: 1px solid rgba(255, 255, 255, .72);
            transition: background .2s, border-color .2s, transform .2s;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            transform: translateY(-1px);
        }
        .btn-outline-light:active {
            transform: translateY(0);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .4rem;
            min-height: 44px;
            padding: .55rem 1.1rem;
            border-radius: .5rem;
            background: transparent;
            color: var(--brand);
            font-weight: 600;
            white-space: nowrap;
            border: 1px solid var(--brand);
            transition: background .2s, transform .2s;
        }
        .btn-secondary:hover {
            background: var(--brand-light);
            transform: translateY(-1px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible,
        .btn-outline-light:focus-visible,
        .btn-secondary:focus-visible,
        .footer-link:focus-visible,
        .nav-link:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 3px;
        }
        .card-shadow {
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease;
        }
        .card-shadow:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .stage-card {
            border: 1px solid var(--line);
            border-radius: 1rem;
            background: #fff;
            box-shadow: var(--shadow-card);
        }
        .footer-title {
            font-size: .85rem;
            font-weight: 700;
            letter-spacing: .08em;
            color: rgba(255, 255, 255, .92);
            margin-bottom: 1rem;
        }
        .footer-link {
            color: rgba(255, 255, 255, .62);
            font-size: .9rem;
            line-height: 2.3;
            transition: color .2s;
        }
        .footer-link:hover {
            color: #fff;
        }
        .timeline-list {
            position: relative;
        }
        .timeline-list::before {
            content: "";
            position: absolute;
            left: 15px;
            top: 12px;
            bottom: 12px;
            width: 2px;
            background: linear-gradient(to bottom, var(--brand), rgba(10, 70, 55, .18));
        }
        @media (min-width: 768px) {
            .timeline-list::before {
                left: 23px;
            }
        }
        .timeline-item {
            position: relative;
            padding-left: 52px;
        }
        @media (min-width: 768px) {
            .timeline-item {
                padding-left: 72px;
            }
        }
        .timeline-dot {
            position: absolute;
            left: 8px;
            top: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--brand);
            color: #fff;
            font-size: 10px;
            font-weight: 800;
            box-shadow: 0 0 0 5px var(--brand-light);
        }
        @media (min-width: 768px) {
            .timeline-dot {
                left: 16px;
                width: 18px;
                height: 18px;
            }
        }
        .faq-item {
            border: 1px solid var(--line);
            border-radius: 1rem;
            background: #fff;
            transition: border-color .2s, box-shadow .2s;
        }
        .faq-item:hover {
            border-color: rgba(10, 70, 55, .4);
            box-shadow: 0 8px 26px rgba(8, 40, 32, .06);
        }
        .faq-item summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.15rem 1.25rem;
            border-radius: 1rem;
            font-size: 1rem;
            font-weight: 700;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--brand-light);
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 300;
            transition: transform .25s ease, background .25s ease;
        }
        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
            background: var(--brand);
            color: #fff;
        }
        .faq-answer {
            padding: 0 1.5rem 1.4rem;
            color: rgba(24, 38, 32, .74);
            font-size: .95rem;
            line-height: 2;
        }
        .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            border-radius: 999px;
            background: var(--brand-light);
            color: var(--brand);
            font-size: .78rem;
            font-weight: 600;
            padding: .22rem .8rem;
        }
        .soft-card {
            border: 1px solid var(--line);
            border-radius: 1.1rem;
            background: #fff;
        }
        .image-rounded {
            border-radius: 1.1rem;
            object-fit: cover;
        }
        .stage-body p {
            color: rgba(24, 38, 32, .72);
            font-size: .95rem;
        }
        .stage-body .arrow-link {
            color: var(--brand);
            font-weight: 700;
            font-size: .92rem;
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            transition: gap .2s;
        }
        .stage-body .arrow-link:hover {
            gap: .6rem;
        }
        .mobile-menu a {
            min-height: 48px;
            display: flex;
            align-items: center;
            padding: .5rem .25rem;
            border-bottom: 1px solid rgba(220, 228, 223, .6);
            font-weight: 600;
            color: var(--ink);
        }
        .mobile-menu a:hover {
            color: var(--brand);
        }
        .tiny-line {
            width: 30px;
            height: 2px;
            border-radius: 2px;
            background: var(--brand);
        }

/* roulang page: category2 */
:root {
            --brand: #0A4637;
            --brand-light: #0D5C47;
            --brand-pale: #E7F0EC;
            --paper: #F5F3EC;
            --pop: #CF4A13;
            --pop-hover: #E25A1D;
            --ink: #182620;
            --ink-soft: rgba(24, 38, 32, 0.78);
            --border: #DCE4DF;
            --deep-bg: linear-gradient(135deg, #062B22, #0A4637);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            color: var(--ink);
            line-height: 1.8;
            background: #ffffff;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input,
        textarea {
            font: inherit;
        }

        .site-container {
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 768px) {
            .site-container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        .btn-primary,
        .btn-outline,
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 46px;
            padding: 0 1.4rem;
            border-radius: 0.5rem;
            font-weight: 700;
            font-size: 0.94rem;
            letter-spacing: 0.04em;
            transition: all 0.25s ease;
            cursor: pointer;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--pop);
            color: #fff;
            box-shadow: 0 10px 24px rgba(207, 74, 19, 0.18);
        }

        .btn-primary:hover {
            background: var(--pop-hover);
            transform: translateY(-1px);
            box-shadow: 0 14px 30px rgba(207, 74, 19, 0.26);
        }

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

        .btn-outline {
            border-color: rgba(10, 70, 55, 0.5);
            color: var(--brand);
            background: rgba(255, 255, 255, 0.7);
        }

        .btn-outline:hover {
            background: var(--brand-pale);
            border-color: var(--brand);
        }

        .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.75);
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: #fff;
        }

        .btn-primary:focus-visible,
        .btn-outline:focus-visible,
        .btn-outline-light:focus-visible {
            outline: 2px solid var(--brand-light);
            outline-offset: 2px;
        }

        .section-title-kicker {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.78rem;
            font-weight: 800;
            letter-spacing: 0.14em;
            color: var(--brand-light);
            text-transform: uppercase;
        }

        .section-title-kicker::before {
            content: "";
            width: 24px;
            height: 2px;
            background: var(--pop);
            border-radius: 99px;
        }

        .nav-link {
            position: relative;
            display: inline-block;
            padding: 8px 2px;
            font-size: 0.94rem;
            font-weight: 700;
            color: rgba(24, 38, 32, 0.78);
            letter-spacing: 0.02em;
            transition: color 0.2s ease;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0px;
            width: 0;
            height: 2px;
            background: var(--brand);
            border-radius: 999px;
            transition: width 0.2s ease;
        }

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

        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--brand);
        }

        .mobile-nav-link {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid rgba(220, 228, 223, 0.85);
            font-weight: 700;
            color: var(--ink);
            min-height: 44px;
        }

        .mobile-nav-link:hover,
        .mobile-nav-link.active {
            color: var(--brand-light);
        }

        .footer-title {
            font-size: 0.85rem;
            font-weight: 800;
            letter-spacing: 0.1em;
            color: rgba(255, 255, 255, 0.92);
            margin-bottom: 0.9rem;
        }

        .footer-link {
            display: inline-block;
            padding: 6px 0;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .footer-link:hover {
            color: #fff;
            padding-left: 3px;
        }

        .hero-overlay {
            background:
                linear-gradient(100deg, rgba(4, 28, 22, 0.96) 0%, rgba(8, 50, 39, 0.88) 45%, rgba(10, 70, 55, 0.74) 100%),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
        }

        .timeline-list {
            position: relative;
            margin-left: 1.5rem;
        }

        @media (min-width: 768px) {
            .timeline-list {
                margin-left: 2rem;
            }
        }

        .timeline-list::before {
            content: "";
            position: absolute;
            left: 0;
            top: 12px;
            bottom: 12px;
            width: 2px;
            background: rgba(10, 70, 55, 0.22);
            border-radius: 999px;
        }

        .timeline-item {
            position: relative;
            padding-left: 2.2rem;
        }

        @media (min-width: 1024px) {
            .timeline-item {
                padding-left: 3rem;
            }
        }

        .timeline-node {
            position: absolute;
            left: -1.19rem;
            top: 0.25rem;
            display: grid;
            width: 2.3rem;
            height: 2.3rem;
            place-items: center;
            border-radius: 999px;
            background: var(--brand);
            color: white;
            font-weight: 900;
            font-size: 0.92rem;
            box-shadow: 0 0 0 4px rgba(231, 240, 236, 0.9), 0 8px 16px rgba(8, 40, 32, 0.16);
        }

        @media (min-width: 1024px) {
            .timeline-node {
                left: -1.29rem;
                width: 2.6rem;
                height: 2.6rem;
            }
        }

        .timeline-card {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 1.4rem;
            transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
        }

        .timeline-card:hover {
            border-color: rgba(10, 70, 55, 0.28);
            box-shadow: 0 1rem 2rem rgba(8, 40, 32, 0.08);
            transform: translateY(-2px);
        }

        @media (min-width: 1024px) {
            .timeline-card {
                padding: 1.8rem 2rem;
            }
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: 1rem;
            background: #fff;
            padding: 0.2rem 1.25rem;
            margin-bottom: 0.8rem;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .faq-item[open] {
            border-color: rgba(10, 70, 55, 0.45);
            box-shadow: 0 12px 28px rgba(8, 40, 32, 0.07);
        }

        .faq-item summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 0.9rem 0;
            font-weight: 800;
            font-size: 1rem;
            color: var(--ink);
        }

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

        .faq-item .faq-icon {
            flex: 0 0 auto;
            width: 1.7rem;
            height: 1.7rem;
            border-radius: 999px;
            display: grid;
            place-items: center;
            background: var(--brand-pale);
            color: var(--brand);
            transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
        }

        .faq-item[open] .faq-icon {
            transform: rotate(180deg);
            background: var(--brand);
            color: #fff;
        }

        .faq-content-text {
            padding: 0 0 1.1rem;
            color: var(--ink-soft);
            font-size: 0.95rem;
            line-height: 1.9;
        }

        .footer-deep {
            background: linear-gradient(135deg, #052017 0%, #0a3529 100%);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .card-chip {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            border-radius: 999px;
            background: rgba(10, 70, 55, 0.08);
            color: var(--brand-light);
            font-size: 0.75rem;
            font-weight: 800;
            padding: 0.2rem 0.7rem;
            letter-spacing: 0.03em;
        }

        .bg-callout {
            background:
                linear-gradient(120deg, rgba(6, 43, 34, 0.93) 0%, rgba(10, 70, 55, 0.88) 100%),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        }

        .step-check-list {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
            padding: 0;
            margin: 0.8rem 0 0;
            list-style: none;
        }

        .step-check-list li {
            display: flex;
            gap: 0.6rem;
            align-items: flex-start;
            font-size: 0.92rem;
            color: var(--ink-soft);
        }

        .step-check-list li::before {
            content: "";
            flex: 0 0 auto;
            width: 6px;
            height: 6px;
            border-radius: 999px;
            background: var(--pop);
            margin-top: 0.72em;
        }