/* roulang page: index */
:root {
            --ink: #202522;
            --ink-soft: #303633;
            --muted: #737b76;
            --paper: #f7f6f2;
            --white: #ffffff;
            --orange: #c85d3a;
            --orange-dark: #a8472b;
            --sage: #6e8178;
            --sage-light: #e8efeb;
            --line: #d9ded9;
            --shadow: 0 14px 35px rgba(32, 37, 34, .08);
            --radius: 10px;
            --container: 1220px;
            --ease: 220ms ease;
        }

        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--ink-soft);
            background: var(--paper);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.82;
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease); }
        img { display: block; width: 100%; max-width: 100%; object-fit: cover; }
        button, input, textarea { font: inherit; }
        button { cursor: pointer; }
        :focus-visible { outline: 3px solid rgba(200, 93, 58, .4); outline-offset: 3px; }
        h1, h2, h3, p { margin-top: 0; }
        h1, h2, h3 { color: var(--ink); line-height: 1.2; letter-spacing: 0; }
        h1 { font-size: clamp(2.5rem, 5vw, 4.25rem); margin-bottom: 22px; }
        h2 { font-size: clamp(2rem, 3.4vw, 3rem); margin-bottom: 18px; }
        h3 { font-size: 1.25rem; margin-bottom: 10px; }
        .container { width: min(var(--container), calc(100% - 80px)); margin: 0 auto; }
        .section { padding: 112px 0; }
        .section--soft { background: var(--sage-light); }
        .section--white { background: var(--white); }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: var(--orange-dark);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .08em;
            margin-bottom: 16px;
        }
        .eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--orange); }
        .section-heading { max-width: 680px; margin-bottom: 48px; }
        .section-heading p { color: var(--muted); max-width: 600px; margin-bottom: 0; }
        .topline {
            height: 36px;
            display: flex;
            align-items: center;
            background: var(--ink);
            color: #e9eeea;
            font-size: 12px;
        }
        .topline .container { display: flex; justify-content: space-between; align-items: center; }
        .topline span:last-child { color: #b9c6be; }
        .site-header {
            background: rgba(247, 246, 242, .98);
            border-bottom: 1px solid var(--line);
            position: relative;
            z-index: 20;
        }
        .nav-wrap { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
        .brand { display: inline-flex; align-items: center; gap: 11px; min-width: 220px; }
        .brand-mark {
            width: 34px;
            height: 34px;
            display: grid;
            place-items: center;
            color: var(--white);
            background: var(--orange);
            border-radius: 7px;
            font-weight: 800;
            font-size: 15px;
        }
        .brand-text { color: var(--ink); font-weight: 750; line-height: 1.2; }
        .brand-text small { display: block; color: var(--sage); font-size: 10px; letter-spacing: .12em; margin-top: 3px; }
        .nav-links { display: flex; align-items: center; gap: 30px; margin-left: auto; }
        .nav-links a { color: var(--muted); font-size: 14px; font-weight: 600; padding: 29px 0 25px; border-bottom: 3px solid transparent; }
        .nav-links a:hover, .nav-links a.active { color: var(--orange-dark); border-bottom-color: var(--orange); }
        .nav-action, .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            min-height: 48px;
            padding: 0 24px;
            border-radius: 6px;
            border: 1px solid transparent;
            font-size: 14px;
            font-weight: 700;
            transition: var(--ease);
        }
        .nav-action, .btn-primary { color: var(--white); background: var(--orange); }
        .nav-action:hover, .btn-primary:hover { color: var(--white); background: var(--orange-dark); transform: translateY(-2px); box-shadow: 0 8px 18px rgba(168, 71, 43, .2); }
        .btn-secondary { color: var(--ink); background: transparent; border-color: rgba(255,255,255,.55); }
        .btn-secondary:hover { color: var(--white); background: rgba(255,255,255,.12); }
        .menu-toggle { display: none; border: 0; background: transparent; color: var(--ink); font-size: 25px; padding: 8px; }
        .hero {
            min-height: 610px;
            display: flex;
            align-items: flex-end;
            color: var(--white);
            background-image: linear-gradient(90deg, rgba(22, 28, 25, .82), rgba(22, 28, 25, .38)), url("/assets/images/backpic/back-1.png");
            background-position: center;
            background-size: cover;
        }
        .hero-content { width: min(760px, 100%); padding: 108px 0 84px; }
        .hero .eyebrow { color: #f2b099; }
        .hero h1 { color: var(--white); max-width: 700px; }
        .hero-copy { color: #e1e8e2; font-size: 18px; max-width: 640px; margin-bottom: 31px; }
        .hero-actions { display: flex; gap: 13px; flex-wrap: wrap; }
        .hero-foot {
            margin-top: 76px;
            display: flex;
            gap: 22px;
            align-items: center;
            color: #d7e0d9;
            font-size: 13px;
        }
        .hero-foot::before { content: ""; width: 44px; height: 1px; background: #e58a6c; }
        .story-grid { display: grid; grid-template-columns: .88fr 1.12fr; gap: 86px; align-items: center; }
        .story-image { aspect-ratio: 4 / 3; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
        .story-image img { height: 100%; }
        .story-copy p { color: var(--muted); margin-bottom: 18px; }
        .keyword-row { display: flex; gap: 9px; flex-wrap: wrap; margin: 27px 0 35px; }
        .tag {
            display: inline-flex;
            align-items: center;
            min-height: 29px;
            padding: 0 11px;
            color: var(--sage);
            background: var(--sage-light);
            border: 1px solid #d3e0d9;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 650;
        }
        .signal-list { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); padding-top: 25px; gap: 18px; }
        .signal strong { display: block; color: var(--ink); font-size: 16px; margin-bottom: 3px; }
        .signal span { color: var(--muted); font-size: 13px; }
        .content-layout { display: grid; grid-template-columns: 1.25fr .75fr; gap: 22px; align-items: stretch; }
        .feature-card, .topic-card {
            border: 1px solid var(--line);
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--white);
            transition: var(--ease);
        }
        .feature-card:hover, .topic-card:hover, .update-item:hover { border-color: #c4a093; box-shadow: var(--shadow); transform: translateY(-3px); }
        .feature-card { display: grid; grid-template-columns: 1fr 1fr; min-height: 350px; }
        .feature-card img { height: 100%; }
        .feature-body { padding: 38px 34px; display: flex; flex-direction: column; justify-content: center; }
        .feature-body p, .topic-card p { color: var(--muted); font-size: 14px; margin-bottom: 22px; }
        .card-link { color: var(--orange-dark); font-size: 14px; font-weight: 700; }
        .topic-stack { display: grid; gap: 22px; }
        .topic-card { padding: 27px 28px; min-height: 164px; position: relative; }
        .topic-card .number { color: var(--orange); font-weight: 800; font-size: 13px; margin-bottom: 12px; }
        .topic-card p { margin-bottom: 8px; line-height: 1.65; }
        .process { background: var(--ink); color: #d8e1da; }
        .process h2 { color: var(--white); }
        .process .section-heading p { color: #aebbb1; }
        .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
        .step { min-height: 190px; padding: 0 28px 0 0; margin-right: 28px; border-right: 1px solid #56625b; position: relative; }
        .step:last-child { border-right: 0; margin-right: 0; }
        .step-no { color: #e18a6d; font-size: 14px; font-weight: 800; margin-bottom: 30px; }
        .step h3 { color: var(--white); font-size: 19px; }
        .step p { color: #aebbb1; font-size: 14px; line-height: 1.7; }
        .updates-head { display: flex; justify-content: space-between; align-items: end; gap: 22px; margin-bottom: 38px; }
        .updates-head .section-heading { margin-bottom: 0; }
        .updates-link { color: var(--orange-dark); font-weight: 700; font-size: 14px; white-space: nowrap; }
        .updates-list { border-top: 1px solid var(--line); }
        .update-item { display: grid; grid-template-columns: 92px 150px 1fr auto; gap: 25px; align-items: center; min-height: 124px; padding: 18px 0; border-bottom: 1px solid var(--line); transition: var(--ease); }
        .update-thumb { width: 150px; height: 88px; border-radius: 6px; overflow: hidden; background: var(--sage-light); }
        .update-thumb img { height: 100%; }
        .update-date { color: var(--orange-dark); font-size: 13px; font-weight: 700; }
        .update-item h3 { font-size: 18px; margin-bottom: 4px; }
        .update-item p { color: var(--muted); font-size: 13px; line-height: 1.6; margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .update-meta { color: var(--sage); font-size: 12px; white-space: nowrap; }
        .empty-state { padding: 38px 0; color: var(--muted); border-bottom: 1px solid var(--line); }
        .empty-state a { display: inline-block; color: var(--orange-dark); font-weight: 700; margin-top: 8px; }
        .faq-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 80px; align-items: start; }
        .faq-intro p { color: var(--muted); }
        .faq-list { border-top: 1px solid var(--line); }
        .faq-item { border-bottom: 1px solid var(--line); }
        .faq-question { width: 100%; min-height: 70px; display: flex; justify-content: space-between; align-items: center; gap: 18px; color: var(--ink); background: transparent; border: 0; text-align: left; font-size: 16px; font-weight: 700; padding: 16px 0; }
        .faq-question .plus { color: var(--orange); font-size: 25px; font-weight: 400; transition: transform var(--ease); }
        .faq-item.open .plus { transform: rotate(45deg); }
        .faq-answer { max-height: 0; overflow: hidden; color: var(--muted); font-size: 14px; line-height: 1.85; transition: max-height 260ms ease; }
        .faq-item.open .faq-answer { max-height: 220px; }
        .faq-answer p { padding: 0 40px 22px 0; margin: 0; }
        .cta-band { background: var(--orange); color: var(--white); padding: 72px 0; }
        .cta-inner { display: flex; justify-content: space-between; align-items: center; gap: 40px; }
        .cta-band h2 { color: var(--white); margin-bottom: 10px; }
        .cta-band p { color: #f9ddd4; margin: 0; }
        .cta-band .btn-primary { background: var(--ink); }
        .cta-band .btn-primary:hover { background: #101412; }
        .site-footer { background: var(--ink); color: #b8c3ba; padding: 62px 0 25px; }
        .footer-grid { display: grid; grid-template-columns: 1.3fr .7fr .8fr 1fr; gap: 55px; padding-bottom: 48px; }
        .footer-brand .brand-text { color: var(--white); }
        .footer-brand p { max-width: 300px; font-size: 13px; line-height: 1.8; margin-top: 18px; }
        .footer-title { color: var(--white); font-size: 14px; font-weight: 700; margin-bottom: 17px; }
        .footer-links { display: grid; gap: 9px; }
        .footer-links a { font-size: 13px; }
        .footer-links a:hover { color: #f0a389; }
        .footer-note { font-size: 13px; line-height: 1.8; }
        .footer-bottom { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid #414b44; padding-top: 21px; color: #87948b; font-size: 12px; }
        @media (max-width: 1024px) {
            .container { width: min(var(--container), calc(100% - 56px)); }
            .nav-links { gap: 19px; }
            .content-layout, .faq-grid { gap: 38px; }
            .update-item { grid-template-columns: 75px 125px 1fr; }
            .update-thumb { width: 125px; }
            .update-meta { grid-column: 3; }
            .footer-grid { gap: 28px; }
        }
        @media (max-width: 768px) {
            .container { width: calc(100% - 40px); }
            .topline .container { justify-content: center; }
            .topline span:last-child { display: none; }
            .nav-wrap { min-height: 72px; }
            .brand { min-width: 0; }
            .nav-action { display: none; }
            .menu-toggle { display: block; }
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                padding: 16px 20px 24px;
                background: var(--paper);
                border-bottom: 1px solid var(--line);
                box-shadow: 0 12px 22px rgba(32,37,34,.08);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
            }
            .nav-links.open { display: flex; }
            .nav-links a { padding: 13px 0; border-bottom: 1px solid var(--line); }
            .nav-links a:last-child { border-bottom: 0; }
            .hero { min-height: 570px; }
            .hero-content { padding: 88px 0 58px; }
            .hero-copy { font-size: 16px; }
            .hero-foot { margin-top: 54px; }
            .section { padding: 76px 0; }
            .story-grid, .content-layout, .faq-grid { grid-template-columns: 1fr; }
            .story-grid { gap: 38px; }
            .feature-card { grid-template-columns: 1fr; }
            .feature-card img { height: 230px; }
            .process-grid { grid-template-columns: 1fr 1fr; gap: 34px 0; }
            .step { min-height: 155px; }
            .step:nth-child(2) { border-right: 0; margin-right: 0; }
            .updates-head, .cta-inner { align-items: flex-start; flex-direction: column; }
            .update-item { grid-template-columns: 80px 110px 1fr; gap: 15px; }
            .update-thumb { width: 110px; height: 76px; }
            .update-item h3 { font-size: 16px; }
            .update-item p { display: none; }
            .update-meta { grid-column: 3; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 480px) {
            .container { width: calc(100% - 36px); }
            h1 { font-size: 2.25rem; }
            h2 { font-size: 1.85rem; }
            .hero { min-height: 540px; }
            .hero-actions { display: grid; grid-template-columns: 1fr; }
            .hero-actions .btn { width: 100%; }
            .signal-list { grid-template-columns: 1fr; gap: 14px; }
            .process-grid { grid-template-columns: 1fr; }
            .step, .step:nth-child(2) { border-right: 0; border-bottom: 1px solid #56625b; margin: 0; padding: 0 0 24px; min-height: 0; }
            .step:last-child { border-bottom: 0; padding-bottom: 0; }
            .update-item { grid-template-columns: 1fr 86px; gap: 12px; }
            .update-date { grid-column: 1; grid-row: 1; }
            .update-thumb { grid-column: 2; grid-row: 1 / span 2; width: 86px; height: 64px; }
            .update-item h3 { grid-column: 1; grid-row: 2; }
            .update-meta { grid-column: 1; grid-row: 3; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .footer-bottom { flex-direction: column; gap: 5px; }
        }

/* roulang page: article */
:root {
            --ink: #202522;
            --ink-soft: #303633;
            --muted: #737b76;
            --paper: #f7f6f2;
            --white: #ffffff;
            --orange: #c85d3a;
            --orange-dark: #a8472b;
            --sage: #6e8178;
            --sage-light: #e8efeb;
            --line: #d9ded9;
            --shadow: 0 14px 35px rgba(32, 37, 34, .08);
            --radius: 10px;
            --container: 1220px;
            --ease: 220ms ease;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--ink-soft);
            background: var(--paper);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.82;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
        }
        a:hover { color: var(--orange-dark); }
        img { display: block; width: 100%; max-width: 100%; object-fit: cover; }
        button, input, textarea { font: inherit; }
        button { cursor: pointer; }
        :focus-visible { outline: 3px solid rgba(200, 93, 58, .38); outline-offset: 3px; }
        .container { width: min(var(--container), calc(100% - 80px)); margin: 0 auto; }
        .topline { min-height: 36px; background: var(--ink); color: #dfe6e0; font-size: 12px; }
        .topline .container { min-height: 36px; display: flex; justify-content: space-between; align-items: center; gap: 18px; }
        .topline a { color: #f1b39e; }
        .site-header { background: rgba(247, 246, 242, .98); border-bottom: 1px solid var(--line); position: relative; z-index: 20; }
        .nav-wrap { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
        .brand { display: inline-flex; align-items: center; gap: 11px; min-width: 220px; }
        .brand-mark {
            width: 34px; height: 34px; display: grid; place-items: center;
            color: var(--white); background: var(--orange); border-radius: 7px;
            font-weight: 800; font-size: 15px;
        }
        .brand-text { color: var(--ink); font-weight: 750; line-height: 1.2; }
        .brand-text small { display: block; color: var(--sage); font-size: 10px; letter-spacing: .12em; margin-top: 3px; }
        .nav-links { display: flex; align-items: center; gap: 30px; margin-left: auto; }
        .nav-links a {
            color: var(--muted); font-size: 14px; font-weight: 600;
            padding: 29px 0 25px; border-bottom: 3px solid transparent;
        }
        .nav-links a:hover, .nav-links a.active { color: var(--orange-dark); border-bottom-color: var(--orange); }
        .nav-action, .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 9px;
            min-height: 48px; padding: 0 24px; border-radius: 6px;
            border: 1px solid transparent; font-size: 14px; font-weight: 700;
            transition: var(--ease);
        }
        .nav-action, .btn-primary { color: var(--white); background: var(--orange); }
        .nav-action:hover, .btn-primary:hover { color: var(--white); background: var(--orange-dark); transform: translateY(-2px); box-shadow: 0 8px 18px rgba(168, 71, 43, .2); }
        .btn-secondary { color: var(--ink); background: transparent; border-color: var(--line); }
        .btn-secondary:hover { color: var(--orange-dark); border-color: var(--orange); background: var(--white); }
        .menu-toggle { display: none; border: 0; background: transparent; color: var(--ink); font-size: 25px; padding: 8px; }
        .article-banner {
            min-height: 330px; display: flex; align-items: flex-end; color: var(--white);
            background-image: linear-gradient(90deg, rgba(22, 28, 25, .88), rgba(22, 28, 25, .42)), url("/assets/images/backpic/back-2.png");
            background-position: center; background-size: cover;
        }
        .banner-content { width: min(900px, 100%); padding: 76px 0 68px; }
        .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--orange-dark); font-size: 13px; font-weight: 700; letter-spacing: .08em; margin-bottom: 16px; }
        .eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--orange); }
        .article-banner .eyebrow { color: #f2b099; }
        .article-banner .eyebrow::before { background: #e58a6c; }
        h1, h2, h3 { color: var(--ink); font-weight: 750; letter-spacing: 0; }
        h1 { font-size: clamp(36px, 5vw, 58px); line-height: 1.18; margin: 0 0 22px; }
        .article-banner h1 { color: var(--white); max-width: 900px; }
        .banner-meta { display: flex; flex-wrap: wrap; gap: 12px 24px; color: #d7e0d9; font-size: 13px; }
        .crumb-bar { border-bottom: 1px solid var(--line); background: var(--white); }
        .breadcrumb { margin: 0; padding: 18px 0; color: var(--muted); font-size: 13px; }
        .breadcrumb span { margin: 0 9px; color: #b0b9b3; }
        .breadcrumb strong { color: var(--ink-soft); font-weight: 600; }
        .article-layout { display: grid; grid-template-columns: minmax(0, 820px) 270px; gap: 76px; align-items: start; padding: 82px 0 108px; }
        .article-main { min-width: 0; }
        .article-cover { aspect-ratio: 2 / 1; border-radius: 8px; overflow: hidden; margin-bottom: 44px; background: var(--sage-light); }
        .article-cover img { height: 100%; }
        .article-intro { color: var(--muted); font-size: 17px; border-left: 3px solid var(--orange); padding: 6px 0 6px 22px; margin-bottom: 42px; }
        .article-content { color: var(--ink-soft); font-size: 17px; line-height: 1.95; overflow-wrap: anywhere; }
        .article-content h2 { font-size: 30px; line-height: 1.35; margin: 52px 0 18px; padding-top: 6px; }
        .article-content h3 { font-size: 22px; line-height: 1.45; margin: 36px 0 12px; }
        .article-content p { margin: 0 0 24px; }
        .article-content ul, .article-content ol { padding-left: 1.5em; margin: 0 0 28px; }
        .article-content li { margin-bottom: 9px; }
        .article-content blockquote { margin: 32px 0; padding: 20px 24px; background: var(--sage-light); border-left: 3px solid var(--sage); color: var(--ink-soft); }
        .article-content img { height: auto; border-radius: 7px; margin: 32px auto 10px; }
        .article-content figure { margin: 30px 0; }
        .article-content figcaption { text-align: center; color: var(--muted); font-size: 13px; }
        .article-content table { width: 100%; border-collapse: collapse; margin: 30px 0; background: var(--white); }
        .article-content th, .article-content td { border: 1px solid var(--line); padding: 12px 14px; text-align: left; }
        .article-content th { background: var(--sage-light); color: var(--ink); }
        .article-content hr { border: 0; border-top: 1px solid var(--line); margin: 42px 0; }
        .article-content a { color: var(--orange-dark); text-decoration: underline; text-underline-offset: 3px; }
        .article-aside { position: sticky; top: 24px; }
        .aside-box { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 25px 23px; margin-bottom: 18px; }
        .aside-title { color: var(--ink); font-size: 15px; font-weight: 750; padding-bottom: 15px; border-bottom: 1px solid var(--line); margin-bottom: 14px; }
        .toc { margin: 0; padding: 0; list-style: none; }
        .toc li { border-bottom: 1px solid #edf0ed; }
        .toc a { display: block; padding: 10px 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
        .toc a:hover { color: var(--orange-dark); padding-left: 4px; }
        .aside-note { color: var(--muted); font-size: 13px; margin: 0; }
        .article-footer { border-top: 1px solid var(--line); margin-top: 58px; padding-top: 25px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; color: var(--muted); font-size: 13px; }
        .article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 35px; }
        .tag { display: inline-flex; align-items: center; min-height: 29px; padding: 0 11px; color: var(--sage); background: var(--sage-light); border: 1px solid #d3e0d9; border-radius: 4px; font-size: 12px; font-weight: 650; }
        .related-section { padding: 82px 0; background: var(--white); border-top: 1px solid var(--line); }
        .section-heading { max-width: 680px; margin-bottom: 38px; }
        .section-heading h2 { font-size: 34px; margin: 0 0 12px; }
        .section-heading p { color: var(--muted); margin: 0; max-width: 620px; }
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .related-card { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--paper); transition: var(--ease); }
        .related-card:hover { border-color: #c4a093; box-shadow: var(--shadow); transform: translateY(-3px); }
        .related-card img { aspect-ratio: 16 / 9; }
        .related-body { padding: 22px; }
        .related-meta { display: flex; gap: 12px; color: var(--sage); font-size: 12px; margin-bottom: 10px; }
        .related-body h3 { font-size: 19px; line-height: 1.45; margin: 0 0 14px; }
        .related-body p { color: var(--muted); font-size: 14px; margin: 0 0 17px; }
        .card-link { color: var(--orange-dark); font-size: 14px; font-weight: 700; }
        .empty-state { padding: 62px 24px; text-align: center; border: 1px dashed #c6d0ca; background: var(--sage-light); border-radius: var(--radius); }
        .empty-state h2 { font-size: 28px; margin: 0 0 10px; }
        .empty-state p { color: var(--muted); margin: 0 0 24px; }
        .site-footer { background: var(--ink); color: #d9e1db; padding: 68px 0 25px; }
        .footer-grid { display: grid; grid-template-columns: 1.35fr .7fr .8fr 1.1fr; gap: 45px; }
        .site-footer .brand-text { color: var(--white); }
        .site-footer .brand-mark { background: var(--orange); }
        .site-footer .brand-text small { color: #9fb0a5; }
        .footer-brand p { max-width: 320px; color: #9fac9f; font-size: 14px; margin: 22px 0 0; }
        .footer-title { color: var(--white); font-size: 14px; font-weight: 700; margin-bottom: 15px; }
        .footer-links { display: grid; gap: 8px; }
        .footer-links a, .footer-note { color: #9fac9f; font-size: 13px; }
        .footer-links a:hover { color: #f2b099; }
        .footer-bottom { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; border-top: 1px solid rgba(255,255,255,.13); margin-top: 48px; padding-top: 20px; color: #89988e; font-size: 12px; }
        .mobile-toc { display: none; }
        @media (max-width: 1024px) {
            .container { width: min(var(--container), calc(100% - 48px)); }
            .nav-links { gap: 18px; }
            .nav-action { padding: 0 16px; }
            .article-layout { grid-template-columns: minmax(0, 1fr) 230px; gap: 35px; }
            .footer-grid { gap: 25px; }
        }
        @media (max-width: 768px) {
            .container { width: min(var(--container), calc(100% - 40px)); }
            .topline .container { justify-content: center; text-align: center; }
            .topline .topline-extra { display: none; }
            .nav-wrap { min-height: 72px; }
            .brand { min-width: 0; }
            .brand-text { font-size: 14px; }
            .brand-text small { font-size: 8px; }
            .menu-toggle { display: block; order: 3; }
            .nav-action { display: none; }
            .nav-links {
                display: none; position: absolute; top: 72px; left: 0; right: 0;
                padding: 12px 20px 20px; background: var(--paper);
                border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
                flex-direction: column; align-items: stretch; gap: 0;
            }
            .nav-links.is-open { display: flex; }
            .nav-links a { padding: 13px 4px; border-bottom: 1px solid var(--line); }
            .nav-links a:last-child { border-bottom: 0; }
            .article-banner { min-height: 350px; }
            .banner-content { padding: 65px 0 55px; }
            h1 { font-size: 38px; }
            .article-layout { display: block; padding: 56px 0 72px; }
            .article-aside { display: none; }
            .mobile-toc { display: block; margin: 0 0 32px; }
            .mobile-toc summary { cursor: pointer; padding: 14px 17px; color: var(--ink); font-weight: 700; background: var(--white); border: 1px solid var(--line); border-radius: 6px; }
            .mobile-toc .toc { padding: 8px 17px; background: var(--white); border: 1px solid var(--line); border-top: 0; }
            .article-content { font-size: 16px; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 35px 25px; }
        }
        @media (max-width: 480px) {
            .container { width: calc(100% - 36px); }
            .brand-text { max-width: 170px; white-space: normal; }
            .article-banner { min-height: 390px; }
            .article-banner h1 { font-size: 32px; }
            .banner-meta { gap: 5px 14px; }
            .article-cover { margin-bottom: 30px; }
            .article-intro { font-size: 15px; padding-left: 15px; }
            .article-content h2 { font-size: 26px; }
            .article-content h3 { font-size: 20px; }
            .article-footer { display: block; }
            .article-footer > * { margin-bottom: 8px; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { display: block; }
            .footer-bottom span { display: block; margin-bottom: 7px; }
            .btn { width: 100%; }
        }

/* roulang page: category1 */
:root {
            --ink: #202522;
            --ink-soft: #303633;
            --muted: #737b76;
            --paper: #f7f6f2;
            --white: #ffffff;
            --orange: #c85d3a;
            --orange-dark: #a8472b;
            --sage: #6e8178;
            --sage-light: #e8efeb;
            --line: #d9ded9;
            --shadow: 0 14px 35px rgba(32,37,34,.08);
            --radius: 10px;
            --container: 1220px;
            --ease: 220ms ease;
        }
        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--ink-soft);
            background: var(--paper);
            font-family: "Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;
            font-size: 16px;
            line-height: 1.82;
            overflow-x: hidden;
        }
        h1,h2,h3,p { margin-top: 0; }
        h1,h2,h3 { color: var(--ink); font-weight: 750; line-height: 1.2; }
        h1 { font-size: clamp(38px,5vw,60px); margin-bottom: 22px; }
        h2 { font-size: clamp(28px,3vw,40px); margin-bottom: 18px; }
        h3 { font-size: 21px; margin-bottom: 12px; }
        a { color: inherit; text-decoration: none; transition: color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease); }
        img { display: block; width: 100%; max-width: 100%; object-fit: cover; }
        button,input,textarea { font: inherit; }
        button { cursor: pointer; }
        .container { width: min(var(--container),calc(100% - 80px)); margin: 0 auto; }
        .topline { min-height: 36px; background: var(--ink); color: #dfe7e1; font-size: 12px; }
        .topline .container { min-height: 36px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
        .topline a { color: #f1b29e; }
        .site-header { background: rgba(247,246,242,.98); border-bottom: 1px solid var(--line); position: relative; z-index: 20; }
        .nav-wrap { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
        .brand { display: inline-flex; align-items: center; gap: 11px; min-width: 220px; }
        .brand-mark { width: 34px; height: 34px; display: grid; place-items: center; color: var(--white); background: var(--orange); border-radius: 7px; font-weight: 800; font-size: 15px; }
        .brand-text { color: var(--ink); font-weight: 750; line-height: 1.2; }
        .brand-text small { display: block; color: var(--sage); font-size: 10px; letter-spacing: .12em; margin-top: 3px; }
        .nav-links { display: flex; align-items: center; gap: 30px; margin-left: auto; }
        .nav-links a { color: var(--muted); font-size: 14px; font-weight: 600; padding: 29px 0 25px; border-bottom: 3px solid transparent; }
        .nav-links a:hover,.nav-links a.active { color: var(--orange-dark); border-bottom-color: var(--orange); }
        .nav-action,.btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 48px; padding: 0 24px; border-radius: 6px; border: 1px solid transparent; font-size: 14px; font-weight: 700; transition: var(--ease); }
        .nav-action,.btn-primary { color: var(--white); background: var(--orange); }
        .nav-action:hover,.btn-primary:hover { color: var(--white); background: var(--orange-dark); transform: translateY(-2px); box-shadow: 0 8px 18px rgba(168,71,43,.2); }
        .btn-outline { color: var(--ink); background: transparent; border-color: var(--ink); }
        .btn-outline:hover { color: var(--white); background: var(--ink); transform: translateY(-2px); }
        .btn:focus-visible,.nav-action:focus-visible,.nav-links a:focus-visible,.menu-toggle:focus-visible,.faq-question:focus-visible { outline: 3px solid rgba(200,93,58,.3); outline-offset: 4px; }
        .menu-toggle { display: none; border: 0; background: transparent; color: var(--ink); font-size: 25px; padding: 8px; }
        .page-hero { position: relative; min-height: 420px; display: flex; align-items: flex-end; color: var(--white); background: url("/assets/images/backpic/back-2.png") center/cover; }
        .page-hero::before { content: ""; position: absolute; inset: 0; background: rgba(25,31,28,.68); }
        .page-hero .container { position: relative; z-index: 1; padding: 82px 0 68px; }
        .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--orange-dark); font-size: 13px; font-weight: 700; letter-spacing: .08em; margin-bottom: 16px; }
        .eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--orange); }
        .page-hero .eyebrow { color: #f2b099; }
        .page-hero h1 { color: var(--white); max-width: 780px; }
        .page-hero p { max-width: 720px; color: #e3e9e4; font-size: 18px; margin-bottom: 0; }
        .breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; color: var(--muted); font-size: 13px; padding: 20px 0; }
        .breadcrumb a:hover { color: var(--orange-dark); }
        .section { padding: 104px 0; }
        .section--white { background: var(--white); }
        .section--soft { background: var(--sage-light); }
        .section-heading { max-width: 700px; margin-bottom: 46px; }
        .section-heading p { color: var(--muted); max-width: 650px; margin-bottom: 0; }
        .guide-intro { display: grid; grid-template-columns: .95fr 1.05fr; gap: 76px; align-items: center; }
        .guide-image { aspect-ratio: 4/3; overflow: hidden; border-radius: var(--radius); background: #dfe7e1; }
        .guide-image img { height: 100%; transition: transform 500ms ease; }
        .guide-image:hover img { transform: scale(1.03); }
        .keyword-row { display: flex; flex-wrap: wrap; gap: 9px; margin: 26px 0 30px; }
        .tag { display: inline-flex; align-items: center; min-height: 29px; padding: 0 11px; color: var(--sage); background: var(--sage-light); border: 1px solid #d3e0d9; border-radius: 4px; font-size: 12px; font-weight: 650; }
        .guide-list { border-top: 1px solid var(--line); }
        .guide-list li { list-style: none; display: flex; gap: 18px; padding: 17px 0; border-bottom: 1px solid var(--line); }
        .guide-list ul { padding: 0; margin: 0; }
        .guide-list strong { color: var(--orange-dark); min-width: 82px; font-size: 14px; }
        .guide-list span { color: var(--muted); font-size: 14px; }
        .theme-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 22px; }
        .theme-main,.theme-side { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--white); }
        .theme-main { display: grid; grid-template-columns: 1fr 1fr; min-height: 330px; }
        .theme-main img { height: 100%; }
        .theme-body { padding: 35px; display: flex; flex-direction: column; justify-content: center; }
        .theme-body p,.theme-side p { color: var(--muted); font-size: 14px; }
        .theme-side { padding: 30px; display: flex; flex-direction: column; justify-content: space-between; background: var(--ink); color: #e4ebe5; }
        .theme-side h3 { color: var(--white); }
        .theme-side p { color: #b7c4ba; }
        .theme-side .tag { color: #dce9df; background: rgba(232,239,235,.1); border-color: rgba(232,239,235,.2); }
        .text-link { color: var(--orange-dark); font-weight: 700; font-size: 14px; }
        .theme-side .text-link { color: #f2b099; }
        .timeline { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; border-top: 1px solid var(--line); }
        .step { position: relative; padding: 29px 25px 10px 0; margin-right: 25px; }
        .step:not(:last-child)::after { content: ""; position: absolute; top: 44px; right: 0; width: 25px; height: 1px; background: var(--orange); }
        .step-no { color: var(--orange); font-size: 13px; font-weight: 800; letter-spacing: .08em; }
        .step p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
        .compare { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
        .compare-item { padding: 28px; border-left: 4px solid var(--orange); background: var(--paper); }
        .compare-item:nth-child(2) { border-left-color: var(--sage); background: var(--sage-light); }
        .compare-item p { color: var(--muted); margin-bottom: 0; font-size: 14px; }
        .faq-list { max-width: 850px; border-top: 1px solid var(--line); }
        .faq-item { border-bottom: 1px solid var(--line); }
        .faq-question { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 23px 0; border: 0; background: transparent; color: var(--ink); text-align: left; font-weight: 700; }
        .faq-question span:last-child { color: var(--orange); font-size: 23px; transition: transform var(--ease); }
        .faq-answer { display: none; color: var(--muted); font-size: 15px; padding: 0 45px 23px 0; }
        .faq-item.open .faq-answer { display: block; }
        .faq-item.open .faq-question span:last-child { transform: rotate(45deg); }
        .cta-band { background: var(--orange); color: var(--white); padding: 67px 0; }
        .cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 34px; }
        .cta-band h2 { color: var(--white); margin-bottom: 10px; }
        .cta-band p { color: #ffe5dc; margin-bottom: 0; }
        .cta-band .btn { color: var(--ink); background: var(--white); }
        .cta-band .btn:hover { background: var(--ink); color: var(--white); }
        .site-footer { background: var(--ink); color: #d7e0d9; padding: 70px 0 24px; }
        .footer-grid { display: grid; grid-template-columns: 1.5fr .8fr .8fr 1.2fr; gap: 40px; padding-bottom: 50px; }
        .footer-brand .brand-text { color: var(--white); }
        .footer-brand p,.footer-note { color: #aebbb1; font-size: 13px; max-width: 285px; margin-top: 22px; }
        .footer-title { color: var(--white); font-size: 14px; font-weight: 750; margin-bottom: 17px; }
        .footer-links { display: grid; gap: 10px; font-size: 13px; color: #aebbb1; }
        .footer-links a:hover { color: #f2b099; }
        .footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.14); color: #8f9e94; font-size: 12px; }
        @media (max-width: 900px) {
            .container { width: min(var(--container),calc(100% - 44px)); }
            .nav-action { display: none; }
            .menu-toggle { display: block; }
            .nav-links { display: none; position: absolute; top: 82px; left: 0; right: 0; margin: 0; padding: 14px 22px 22px; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
            .nav-links.open { display: grid; gap: 0; }
            .nav-links a { padding: 13px 0; border-bottom: 1px solid var(--line); }
            .guide-intro,.theme-grid { grid-template-columns: 1fr; gap: 38px; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 700px) {
            .section { padding: 72px 0; }
            .page-hero { min-height: 390px; }
            .page-hero .container { padding: 66px 0 55px; }
            .page-hero p { font-size: 16px; }
            .theme-main { grid-template-columns: 1fr; }
            .theme-main img { height: 230px; }
            .timeline { grid-template-columns: 1fr; border-top: 0; }
            .step { padding: 22px 0 22px 54px; margin: 0; border-top: 1px solid var(--line); }
            .step:not(:last-child)::after { top: auto; right: auto; left: 17px; bottom: -18px; width: 1px; height: 36px; }
            .compare { grid-template-columns: 1fr; }
            .cta-inner { align-items: flex-start; flex-direction: column; }
        }
        @media (max-width: 480px) {
            .container { width: calc(100% - 36px); }
            .topline .container { justify-content: center; text-align: center; }
            .topline span:first-child { display: none; }
            .brand { min-width: 0; }
            .brand-text { font-size: 14px; }
            .brand-text small { font-size: 8px; }
            h1 { font-size: 36px; }
            .hero-actions,.cta-band .btn { width: 100%; }
            .hero-actions .btn { width: 100%; }
            .theme-body,.theme-side,.compare-item { padding: 25px 22px; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .footer-bottom { flex-direction: column; gap: 8px; }
        }