/* roulang page: index */
:root{
  --color-bg:#F7F6F2;
  --color-surface:#FFFFFF;
  --color-sink:#202421;
  --color-ink:#1B1F1D;
  --color-ink-soft:#4A514D;
  --color-muted:#7B827E;
  --color-line:#E6E2D8;
  --color-primary:#1A6B5C;
  --color-primary-hover:#105047;
  --color-primary-soft:#E5EFEB;
  --color-accent:#B6875A;
  --font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
  --radius-sm:6px;
  --radius-md:12px;
  --radius-lg:14px;
  --shadow-sm:0 1px 2px rgba(27,31,29,.04);
  --shadow-md:0 1px 2px rgba(27,31,29,.06);
  --shadow-lg:0 20px 40px rgba(27,31,29,.10);
  --container-w:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
}
body{
  font-family:var(--font-family);
  background:var(--color-bg);
  color:var(--color-ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--color-primary);text-decoration:none;transition:color .2s,background .2s,border .2s,box-shadow .2s}
a:hover{color:var(--color-primary-hover)}
a:focus-visible,.btn:focus-visible{
  outline:2px solid var(--color-primary);
  outline-offset:2px;
}
.btn{height:52px;padding:0 28px;border-radius:var(--radius-sm);font-weight:600;display:inline-flex;align-items:center;justify-content:center;transition:all .2s ease;border:none;letter-spacing:.02em}
.btn .bi{font-size:1.1em;margin-left:8px;transition:transform .2s}
.btn-primary{background:var(--color-primary);color:#fff}
.btn-primary:hover,.btn-primary:focus{background:var(--color-primary-hover);color:#fff;transform:translateY(-1px)}
.btn-outline-ink{background:transparent;color:var(--color-ink);border:1px solid var(--color-ink)}
.btn-outline-ink:hover{background:transparent;border-color:var(--color-primary);color:var(--color-primary)}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.75)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.container-main{max-width:var(--container-w);margin:0 auto;padding-left:24px;padding-right:24px}
.section-sub{font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--color-accent);text-transform:uppercase;display:flex;align-items:center;gap:12px;margin-bottom:12px}
.section-sub::before{content:"";width:22px;height:2px;background:var(--color-accent);border-radius:99px}
h1,h2,h3,h4,h5{color:var(--color-ink);font-weight:700;line-height:1.3}
h2{font-size:40px;line-height:1.25;margin:0}
h3{font-size:24px;line-height:1.4}
.text-muted{color:var(--color-muted)!important}
.text-accent{color:var(--color-accent)!important}
.section-arrow-link{
  display:inline-flex;align-items:center;gap:8px;color:var(--color-primary);
  font-weight:600;font-size:15px;margin-top:12px;
}
.section-arrow-link .bi{transition:transform .2s}
.section-arrow-link:hover .bi{transform:translateX(6px)}
.section-arrow-link:hover{color:var(--color-primary-hover)}

/* ===== Header ===== */
.site-header{
  background:rgba(247,246,242,.97);
  border-bottom:1px solid var(--color-line);
  position:sticky;top:0;z-index:1050;
  backdrop-filter:none;
}
.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between}
.logo-block{display:flex;align-items:baseline;gap:12px}
.logo-text{
  font-size:24px;font-weight:700;color:var(--color-ink);line-height:1.2;
  letter-spacing:-.01em;display:flex;align-items:center;gap:8px;
}
.logo-text .logo-badge{
  background:var(--color-primary-soft);color:var(--color-primary);
  font-size:12px;font-weight:600;padding:3px 9px;
  border-radius:999px;letter-spacing:.04em;
}
.logo-sub{font-size:12px;color:var(--color-muted);font-weight:400;margin-left:10px;border-left:1px solid var(--color-line);padding-left:10px;line-height:1.3}
.logo-sub b{color:var(--color-ink-soft);font-weight:600}
.site-nav{display:flex;align-items:center;gap:4px;list-style:none}
.site-nav .nav-item{margin:0 2px}
.site-nav .nav-link{
  color:var(--color-ink-soft);font-weight:500;font-size:15px;
  padding:10px 14px;border-radius:8px;position:relative;
  display:flex;align-items:center;gap:5px;
}
.site-nav .nav-link:hover{color:var(--color-primary);background:rgba(26,107,92,.07)}
.site-nav .nav-link.active{
  color:var(--color-primary);font-weight:600;
}
.site-nav .nav-link.active::after{
  content:"";position:absolute;bottom:0;left:14px;right:14px;height:2px;
  background:var(--color-primary);border-radius:99px;
}
.nav-cta-right{display:flex;align-items:center;gap:12px}
.nav-mega-toggle{background:transparent;border:1px solid var(--color-line);border-radius:8px;height:44px;padding:0 18px;font-size:14px;color:var(--color-ink-soft);font-weight:600;display:inline-flex;align-items:center;gap:8px;transition:all .2s}
.nav-mega-toggle:hover{border-color:var(--color-primary);color:var(--color-primary)}
.nav-mega-toggle i{transition:transform .2s}
.nav-mega-toggle.show i{transform:rotate(180deg)}
.nav-mega-panel{
  width:720px;max-width:calc(100vw - 32px);
  border:1px solid var(--color-line);border-radius:var(--radius-lg);
  background:#fff;box-shadow:var(--shadow-lg);
  padding:20px;margin-top:10px!important;
}
.nav-mega-panel .mega-grid{display:grid;grid-template-columns:1fr 1.2fr .9fr;gap:20px}
.mega-label{font-size:13px;font-weight:600;color:var(--color-muted);margin-bottom:10px;letter-spacing:.06em}
.mega-link-list{list-style:none;padding:0;margin:0}
.mega-link-list li+li{margin-top:4px}
.mega-link-list a{
  display:flex;align-items:center;justify-content:space-between;
  font-size:15px;padding:6px 8px;border-radius:6px;color:var(--color-ink-soft);
}
.mega-link-list a:hover{background:var(--color-primary-soft);color:var(--color-primary)}
.mega-news-item{display:flex;flex-direction:column;gap:2px;padding:10px 8px;border-radius:8px;border:1px solid transparent;transition:all .2s}
.mega-news-item:hover{background:#fff;border-color:var(--color-line);box-shadow:var(--shadow-md)}
.mega-news-item small{color:var(--color-muted);font-size:12px}
.mega-news-item span{font-size:14px;font-weight:500}
.mega-card{
  background:#fff;opacity:1;border:1px solid var(--color-line);
  background-image:url(/assets/images/backpic/back-3.png);background-size:cover;background-position:center;
  position:relative;border-radius:10px;padding:18px;overflow:hidden;color:#fff;min-height:150px;
  display:flex;flex-direction:column;justify-content:flex-end;
}
.mega-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(32,36,33,.15),rgba(32,36,33,.72));z-index:1}
.mega-card > *{position:relative;z-index:2}
.mega-card .mega-card-title{font-weight:600;font-size:18px;margin-bottom:2px}
.mega-card .mega-card-text{font-size:13px;color:rgba(255,255,255,.9);margin-bottom:8px}
.mega-card a{font-size:13px;color:#fff;border:1px solid rgba(255,255,255,.7);border-radius:6px;padding:4px 10px;display:inline-block;width:fit-content}
.mega-card a:hover{background:#fff;color:var(--color-ink)}
.site-nav-mobile{
  position:fixed;top:76px;left:0;right:0;background:#fff;z-index:1045;
  border-bottom:1px solid var(--color-line);box-shadow:var(--shadow-lg);
  padding:16px 0;display:none;max-height:calc(100vh - 76px);overflow-y:auto;
}
.site-nav-mobile.open{display:block}
.site-nav-mobile .nav-link{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;border-radius:0;color:var(--color-ink-soft);font-size:16px;font-weight:500;border-bottom:1px solid #f3f1eb}
.site-nav-mobile .nav-link.active{color:var(--color-primary);background:var(--color-primary-soft)}
.navbar-toggler{border:none;background:transparent;width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;font-size:24px;color:var(--color-ink)}

/* ===== Hero ===== */
.hero{
  min-height:650px;position:relative;display:flex;align-items:center;
  background-color:var(--color-surface);
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;background:rgba(247,246,242,.93);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 85% 30%, rgba(26,107,92,.06) 0%, transparent 42%);
}
.hero .container-main{position:relative;z-index:2;width:100%}
.hero__eyebrow{font-size:13px;letter-spacing:.2em;color:var(--color-primary);font-weight:600;margin-bottom:22px;display:inline-block}
.hero__title{
  font-weight:700;font-size:72px;line-height:1.09;letter-spacing:-.02em;
  max-width:860px;color:var(--color-ink);
}
.hero__subtitle{
  font-size:20px;color:var(--color-ink-soft);max-width:620px;
  margin:28px 0;line-height:1.8;
}
.hero__subtitle span{color:var(--color-primary);font-weight:600}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px}
.down-note{
  margin-top:52px;display:inline-flex;align-items:center;gap:8px;
  color:var(--color-muted);font-size:14px;
}
.down-note i{font-size:16px}

/* ===== Trust bar ===== */
.trust-bar{background:#fff;border-bottom:1px solid var(--color-line)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.trust-item{padding:34px 28px;text-align:center;border-left:1px solid var(--color-line);position:relative}
.trust-item:first-child{border-left:none}
.trust-item strong{display:block;font-size:40px;line-height:1.2;color:var(--color-ink);font-weight:700;letter-spacing:-.02em}
.trust-item em{font-style:normal;display:block;font-size:15px;color:var(--color-muted);margin-top:2px}
.trust-item strong small{font-size:18px;color:var(--color-primary);font-weight:700}

/* ===== section ===== */
.page-section{padding-top:100px;padding-bottom:100px}
.page-section--tight{padding-top:72px;padding-bottom:72px}
.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:48px}
.section-heading .heading-left{flex:0 1 68%}
.section-heading .heading-left p{font-size:16px;color:var(--color-ink-soft);max-width:600px;margin-top:16px}

/* ===== Feature Zigzag ===== */
.feature-row{
  display:grid;grid-template-columns:7fr 5fr;gap:60px;align-items:center;
  padding:52px 0;border-top:1px solid var(--color-line);
}
.feature-row:first-of-type{border-top:none}
.feature-row.reverse .feature-media{order:2}
.feature-media{
  position:relative;border-radius:12px;overflow:hidden;
  width:100%;aspect-ratio:4/3;background:var(--color-primary-soft);
}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-media::after{
  content:"";position:absolute;inset:0;
  box-shadow:inset 0 0 0 1px rgba(32,36,33,.06);border-radius:12px;
}
.feature-info h3{font-size:28px;margin-bottom:16px}
.feature-info p{color:var(--color-ink-soft);font-size:16px;line-height:1.8}
.feature-points{list-style:none;padding:0;margin:18px 0 6px}
.feature-points li{
  display:flex;align-items:flex-start;gap:10px;margin-bottom:10px;
  color:var(--color-ink-soft);
}
.feature-points .dot{
  flex:0 0 auto;width:6px;height:6px;border-radius:50%;
  background:var(--color-primary);margin-top:10px;
}

/* ===== use scene rows ===== */
.scene-list{border-top:1px solid var(--color-line)}
.scene-row{
  display:grid;grid-template-columns:80px 1.4fr 1fr auto;gap:20px;
  align-items:center;padding:20px 16px;border-bottom:1px solid var(--color-line);
  border-radius:6px;transition:background .2s;
}
.scene-row:hover{background:var(--color-primary-soft)}
.scene-idx{font-size:20px;font-weight:700;color:var(--color-accent)}
.scene-name{font-size:22px;font-weight:700;color:var(--color-ink)}
.scene-desc{font-size:15px;color:var(--color-ink-soft)}
.scene-arrow{
  width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;border:1px solid var(--color-line);color:var(--color-ink-soft);
  transition:all .2s;
}
.scene-row:hover .scene-arrow{background:#fff;border-color:var(--color-primary);color:var(--color-primary);transform:translateX(4px)}

/* ===== case ===== */
.case-wrap{display:grid;grid-template-columns:5fr 7fr;gap:52px;background:var(--color-surface);border:1px solid var(--color-line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-md)}
.case-media{background:var(--color-primary-soft);min-height:360px}
.case-media img{width:100%;height:100%;object-fit:cover}
.case-body{padding:44px 44px 44px 0;display:flex;flex-direction:column;justify-content:center}
.case-kicker{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--color-accent);display:flex;gap:12px;align-items:center;margin-bottom:14px}
.case-kicker .badge-light{background:var(--color-primary-soft);color:var(--color-primary);border-radius:99px;font-size:12px;padding:5px 12px}
.case-body h3{font-size:32px;margin-bottom:12px}
.case-body p{color:var(--color-ink-soft);font-size:16px;line-height:1.85}
.case-tags{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}
.case-tags span{
  background:#fff;border:1px solid var(--color-line);color:var(--color-ink-soft);
  font-size:13px;border-radius:99px;padding:5px 13px;
}
.case-prove{display:flex;gap:0;margin-top:16px;border-top:1px solid var(--color-line);padding-top:18px}
.case-prove .item{flex:1;text-align:center;padding:10px 5px}
.case-prove .item strong{display:block;font-size:30px;font-weight:700;color:var(--color-ink)}
.case-prove .item span{font-size:14px;color:var(--color-muted)}
.case-prove .item + .item{border-left:1px solid var(--color-line)}
.case-secondary{
  display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:56px;
}
.secondary-card{
  background:var(--color-surface);border:1px solid var(--color-line);
  border-radius:12px;padding:30px;transition:all .2s;
}
.secondary-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-primary-soft);transform:translateY(-3px)}
.secondary-card h4{font-size:17px;font-weight:600;display:flex;justify-content:space-between;align-items:center}
.secondary-card p{color:var(--color-muted);font-size:14px;margin-top:8px}

/* ===== price ===== */
.price-note{
  display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--color-line);
  padding-bottom:12px;margin-bottom:40px;color:var(--color-muted);font-size:14px;
}
.price-note .bi{color:var(--color-primary)}
.price-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.price-card{
  background:#fff;border:1px solid var(--color-line);border-radius:16px;
  padding:34px 30px;display:flex;flex-direction:column;position:relative;
  transition:all .2s;box-shadow:var(--shadow-sm);
}
.price-card:hover{border-color:var(--color-primary-soft);box-shadow:var(--shadow-md);transform:translateY(-4px)}
.price-card .popular-badge{
  background:var(--color-primary);color:#fff;font-size:13px;font-weight:600;
  padding:7px 16px;border-radius:99px;letter-spacing:.03em;
  transform:translateY(-4px);
}
.price-card .price-kicker{font-size:14px;color:var(--color-muted);font-weight:500}
.price-card .price-title{font-size:22px;font-weight:700;margin-top:6px}
.price-card .price-box{display:flex;align-items:flex-end;gap:4px;margin:18px 0;border-top:1px solid var(--color-line);padding-top:20px}
.price-card .price-box .value{font-size:48px;font-weight:700;line-height:1}
.price-card .price-box .unit{font-size:14px;color:var(--color-muted);margin-bottom:6px}
.price-card ul{list-style:none;padding:0;margin:0 0 28px;flex:1}
.price-card ul li{padding:8px 0;border-bottom:1px dashed var(--color-line);font-size:15px;color:var(--color-ink-soft);display:flex;align-items:center;gap:10px}
.price-card ul li .bi{color:var(--color-primary)}
.price-card .btn{width:100%}
.price-card.is-feature{
  background:var(--color-primary);border-color:var(--color-primary);color:#fff;
  transform:translateY(-16px);box-shadow:0 24px 44px rgba(26,107,92,.2);
}
.price-card.is-feature .price-kicker,.price-card.is-feature .price-box .unit{color:rgba(255,255,255,.75)}
.price-card.is-feature .price-title,.price-card.is-feature .price-box .value{color:#fff}
.price-card.is-feature ul li{color:rgba(255,255,255,.88);border-color:rgba(255,255,255,.15)}
.price-card.is-feature ul li .bi{color:#fff}
.price-card.is-feature .btn-contrast{background:#fff;color:var(--color-primary);width:100%;height:52px}
.price-card.is-feature .btn-contrast:hover{background:var(--color-primary-soft)}

/* ===== FAQ ===== */
.faq-shell{max-width:860px;background:transparent}
.faq-shell .accordion-item{
  background:var(--color-surface);border:1px solid var(--color-line);
  border-radius:12px!important;margin-bottom:14px;overflow:hidden;
  box-shadow:none;
}
.faq-shell .accordion-button{
  background:#fff;padding:22px 24px;font-size:18px;font-weight:600;color:var(--color-ink);
  border:none;box-shadow:none;
}
.faq-shell .accordion-button:not(.collapsed){background:var(--color-primary-soft);color:var(--color-primary)}
.faq-shell .accordion-button:focus{outline:2px solid var(--color-primary);outline-offset:-2px;border-radius:10px}
.faq-shell .accordion-body{color:var(--color-ink-soft);font-size:16px;line-height:1.9;background:#fff;padding:0 24px 22px}

/* ===== CTA ===== */
.cta-band{
  background:var(--color-sink);position:relative;overflow:hidden;
  padding:82px 0;background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(32,36,33,.88)}
.cta-band .container-main{position:relative;z-index:2}
.cta-grid{display:flex;justify-content:space-between;align-items:center;gap:36px}
.cta-copy h2{color:#fff;font-size:40px;max-width:620px}
.cta-copy p{color:rgba(255,255,255,.65);font-size:16px;margin-top:14px;max-width:540px}
.cta-action{flex:0 0 auto}
.cta-action .btn-emailbtn{
  background:#fff;color:var(--color-primary);height:56px;padding:0 38px;
  font-size:16px;border-radius:8px;font-weight:700;display:inline-flex;
  align-items:center;gap:8px;
}
.cta-action .btn-emailbtn:hover{background:var(--color-primary-soft);color:var(--color-primary-hover)}
.cta-extra{margin-top:30px;display:flex;gap:24px;color:rgba(255,255,255,.65);font-size:14px}
.cta-extra i{color:#fff;margin-right:4px}

/* ===== blog / news ===== */
.news-shell{display:flex;flex-direction:column;gap:20px}
.news-item-card{
  display:grid;grid-template-columns:2.4fr 5.6fr 3fr;gap:22px;
  background:var(--color-surface);border:1px solid var(--color-line);
  border-radius:12px;padding:22px;align-items:center;transition:all .2s;
}
.news-item-card:hover{box-shadow:var(--shadow-lg);border-color:var(--color-primary-soft)}
.news-media{background:var(--color-primary-soft);border-radius:8px;overflow:hidden;width:100%;aspect-ratio:16/10}
.news-media img{width:100%;height:100%;object-fit:cover}
.news-title-wrap h4{font-size:19px;font-weight:600;line-height:1.5}
.news-title-wrap h4 a{color:var(--color-ink)}
.news-title-wrap h4 a:hover{color:var(--color-primary)}
.news-title-wrap p{color:var(--color-muted);font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:6px}
.news-meta2{display:flex;gap:16px;color:var(--color-muted);font-size:14px}
.news-meta2 .tag-cat{background:var(--color-primary-soft);color:var(--color-primary);padding:3px 12px;border-radius:99px}
.news-more-link{display:flex;align-items:center;gap:8px;font-weight:600}
.news-more-link i{transition:transform .2s}
.news-item-card:hover .news-more-link i{transform:translateX(6px)}
.news-empty{
  background:#fff;border:1px dashed var(--color-line);border-radius:14px;
  padding:64px 0;text-align:center;color:var(--color-muted);font-size:15px;
}
.news-empty i{display:block;font-size:48px;color:var(--color-line);margin-bottom:14px}

/* ===== Footer ===== */
.site-footer{background:var(--color-sink);color:#aeb4b0;font-size:15px}
.footer-top{padding:70px 0 50px}
.footer-grid{display:grid;grid-template-columns:3fr 1.6fr 2fr 2.4fr;gap:44px}
.footer-brand .logo-text{color:#fff;display:flex;align-items:center;gap:8px}
.footer-brand .logo-badge{background:rgba(255,255,255,.1);color:#fff}
.footer-brand p{color:#8f9691;margin-top:16px;max-width:260px;line-height:1.8;font-size:14px}
.footer-title{color:#fff;font-size:16px;margin-bottom:20px;font-weight:600}
.footer-links{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.footer-links a{color:#8f9691;font-size:14px;display:flex;align-items:center;gap:6px}
.footer-links a:hover{color:#fff}
.footer-links a::before{content:"›";font-size:16px;color:var(--color-accent)}
.footer-contact{list-style:none;padding:0;margin:0;color:#8f9691;font-size:14px}
.footer-contact li{display:flex;gap:10px;margin-bottom:14px}
.footer-contact i{font-size:18px;color:var(--color-accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:24px 0;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:#7f8681
}

/* ===== Response ===== */
@media (max-width:1024px){
  .hero__title{font-size:48px}
  .feature-row{grid-template-columns:1fr;gap:28px}
  .feature-row.reverse .feature-media{order:0}
  .feature-media{aspect-ratio:16/10}
  .case-wrap{grid-template-columns:1fr}
  .case-media{min-height:260px}
  .case-body{padding:36px}
  .price-cards{grid-template-columns:1fr;gap:28px}
  .price-card.is-feature{transform:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .news-item-card{grid-template-columns:1fr}
  .case-secondary{grid-template-columns:1fr}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .trust-item{border-left:none}
  .trust-item:nth-child(odd){border-left:none}
  .trust-item:nth-child(-n+2){border-bottom:1px solid var(--color-line)}
  .mega-inner .mega-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .site-nav{display:none!important}
  .navbar-toggler{display:inline-flex!important}
  .hero{min-height:auto;padding:64px 0}
  .hero__title{font-size:38px}
  .hero__subtitle{font-size:17px}
  .page-section{padding:56px 0 60px}
  h2{font-size:28px}
  .section-heading{flex-direction:column;align-items:flex-start;gap:12px}
  .scene-row{grid-template-columns:1fr auto;padding:20px 8px}
  .scene-idx{font-size:16px}
  .scene-name{font-size:18px}
  .scene-desc{grid-column:1/-1;order:3}
  .trust-item{padding:18px 10px}
  .trust-item strong{font-size:28px}
  .case-prove{flex-wrap:wrap}
  .cta-grid{flex-direction:column;text-align:center}
  .cta-copy h2{font-size:27px}
  .cta-extra{flex-direction:column;gap:8px}
  .site-nav-mobile.open{display:block}
  .nav-cta-right .btn{display:none}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .container-main{padding-left:18px;padding-right:18px}
}
@media (max-width:576px){
  .container-main{padding-left:14px;padding-right:14px}
  .trust-grid{grid-template-columns:1fr 1fr}
  .trust-item:nth-child(3){border-bottom:1px solid var(--color-line)}
  .trust-grid .trust-item:nth-child(-n+2){border-bottom:1px solid var(--color-line)}
  .trust-grid .trust-item:nth-child(1){border-right:1px solid var(--color-line)}
  .logo-sub{display:none}
  .nav-wrap{height:70px}
  .site-nav-mobile{top:70px}
  .feature-row{padding:36px 0}
  .feature-info h3{font-size:23px}
  .section-heading p{font-size:15px}
  .nav-mega-panel{width:100%}
}
.navbar-toggler{display:none}
@media(max-width:992px){
  .nav-mega-toggle{display:none}
  .nav-cta-btn{display:none}
  .site-nav{display:none!important}
  .navbar-toggler{display:inline-flex!important}
}
@media(max-width:992px){
  .site-nav-mobile.open{display:block}
}
@media(min-width:992px){
  .nav-mega-panel{position:absolute!important}
  .nav-mega-toggle{display:inline-flex}
  .site-nav-mobile{display:none!important}
  .navbar-toggler{display:none!important}
  .site-nav{display:flex!important}
}
@media(max-width:991.98px){
  .desktop-nav{display:none!important}
}

/* roulang page: article */
:root {
            --color-bg: #F7F6F2;
            --color-surface: #FFFFFF;
            --color-surface-sink: #202421;
            --color-ink: #1B1F1D;
            --color-ink-soft: #4A514D;
            --color-muted: #7B827E;
            --color-line: #E6E2D8;
            --color-primary: #1A6B5C;
            --color-primary-hover: #105047;
            --color-primary-soft: #E5EFEB;
            --color-accent: #B6875A;
            --color-white: #FFFFFF;
            --radius-card: 12px;
            --radius-btn: 6px;
            --radius-drop: 14px;
            --shadow-card: 0 1px 2px rgba(27, 31, 29, .04), 0 1px 3px rgba(27, 31, 29, .06);
            --shadow-hover: 0 20px 40px rgba(27, 31, 29, .10);
            --shadow-drop: 0 24px 56px rgba(27, 31, 29, .16);
            --font-main: system-ui, -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 100px;
        }
        body {
            margin: 0;
            background: var(--color-bg);
            color: var(--color-ink);
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            border: 0;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--color-primary-hover);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container-main {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .container-reading {
            width: 100%;
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .site-header {
            background: rgba(247, 246, 242, .97);
            border-bottom: 1px solid var(--color-line);
            position: relative;
            z-index: 1080;
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 76px;
            gap: 20px;
        }
        .logo-block {
            min-width: 176px;
            flex-shrink: 0;
        }
        .logo-text {
            display: inline-flex;
            align-items: center;
            font-size: 24px;
            line-height: 1.15;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--color-ink);
        }
        .logo-text:hover {
            color: var(--color-ink);
        }
        .logo-badge {
            margin-left: 8px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 12px;
            padding: 2px 7px;
            border-radius: 999px;
            display: inline-block;
            letter-spacing: .03em;
        }
        .logo-sub {
            font-size: 12px;
            color: var(--color-muted);
            letter-spacing: .04em;
            line-height: 1.5;
            margin-top: 2px;
            white-space: nowrap;
        }
        .site-nav {
            list-style: none;
            margin: 0 auto;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-item {
            list-style: none;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 4px 16px;
            color: var(--color-ink);
            font-size: 16px;
            font-weight: 600;
            position: relative;
            border-radius: var(--radius-btn);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-primary);
            background: rgba(26, 107, 92, .06);
        }
        .nav-link:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .nav-link.active {
            color: var(--color-primary);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: -20px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }
        .nav-cta-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-cta-btn {
            height: 44px;
            min-width: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 0 20px;
            white-space: nowrap;
            transition: all .2s ease;
        }
        .btn-primary {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: var(--color-white);
            border-radius: var(--radius-btn);
            font-weight: 600;
            border: 1px solid var(--color-primary);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            color: var(--color-white);
            box-shadow: 0 12px 24px rgba(16, 80, 71, .18);
            transform: translateY(-1px);
        }
        .btn-outline-ink {
            background: transparent;
            border: 1px solid #B9B4A8;
            color: var(--color-ink);
            border-radius: var(--radius-btn);
            font-weight: 600;
        }
        .btn-outline-ink:hover,
        .btn-outline-ink:focus {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(26, 107, 92, .04);
        }
        .navbar-toggler {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--color-line);
            background: var(--color-surface);
            color: var(--color-ink);
            font-size: 22px;
            border-radius: 8px;
        }
        .nav-mega-toggle {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid transparent;
            background: transparent;
            height: 44px;
            border-radius: 8px;
            padding: 0 10px;
            color: var(--color-ink-soft);
            font-weight: 600;
            font-size: 14px;
            transition: all .2s ease;
        }
        .nav-mega-toggle:hover,
        .nav-mega-toggle.show {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }
        .nav-mega-toggle i {
            transition: transform .2s ease;
        }
        .nav-mega-toggle.show i,
        .nav-mega-toggle[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .nav-mega-panel {
            border: 0;
            border-radius: var(--radius-drop);
            box-shadow: var(--shadow-drop);
            background: var(--color-white);
            padding: 28px;
            margin-top: 14px;
            min-width: 680px;
        }
        .mega-grid {
            display: grid;
            grid-template-columns: 1.15fr 1fr;
            gap: 32px;
        }
        .mega-label {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .08em;
            color: var(--color-muted);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
        }
        .mega-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .mega-link-list li+li {
            margin-top: 6px;
        }
        .mega-link-list a {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 8px 10px;
            border-radius: 8px;
            color: var(--color-ink);
            font-weight: 500;
            font-size: 15px;
        }
        .mega-link-list a:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }
        .mega-news-text {
            display: grid;
            gap: 14px;
        }
        .mega-news-item {
            padding: 10px 12px;
            background: var(--color-bg);
            border-radius: 10px;
            border-left: 2px solid var(--color-primary);
            font-size: 14px;
            line-height: 1.7;
        }
        .mega-news-item small {
            color: var(--color-accent);
            font-weight: 700;
            display: block;
            font-size: 12px;
            letter-spacing: .06em;
        }
        .mobile-nav-panel {
            display: none;
            border-top: 1px solid var(--color-line);
            background: var(--color-white);
            padding: 18px 24px 28px;
        }
        .mobile-nav-panel .site-nav {
            flex-direction: column;
            align-items: stretch;
            margin-bottom: 18px;
        }
        .mobile-nav-panel .nav-link {
            justify-content: flex-start;
            padding: 12px 10px;
            border-bottom: 1px solid var(--color-line);
            border-radius: 0;
            font-size: 17px;
        }
        .mobile-nav-panel .nav-link.active::after {
            display: none;
        }
        .article-top {
            background: var(--color-surface-sink);
            padding: 58px 0 40px;
            color: var(--color-white);
            background-image: linear-gradient(135deg, rgba(26, 107, 92, .16), rgba(32, 36, 33, .4)), url(/assets/images/backpic/back-2.png);
            background-size: cover;
            background-position: center;
        }
        .breadcrumb-wrap {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, .72);
            margin-bottom: 18px;
        }
        .breadcrumb-wrap a {
            color: rgba(255, 255, 255, .82);
            border-bottom: 1px solid rgba(255, 255, 255, .35);
            transition: all .2s ease;
        }
        .breadcrumb-wrap a:hover {
            color: #fff;
            border-color: #fff;
        }
        .breadcrumb-sep {
            opacity: .45;
        }
        .breadcrumb-wrap .current {
            font-weight: 700;
            color: #fff;
            max-width: 640px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .article-pretitle {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .12em;
            color: var(--color-accent);
            margin-bottom: 8px;
            text-transform: uppercase;
        }
        .article-top .card-eyebrow {
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .12em;
            margin-bottom: 10px;
        }
        .article-top h1 {
            font-size: clamp(32px, 4.4vw, 52px);
            line-height: 1.16;
            font-weight: 800;
            letter-spacing: -.02em;
            color: #fff;
            margin: 0;
            max-width: 1000px;
            word-break: break-word;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            margin-top: 22px;
            font-size: 14px;
            color: rgba(255, 255, 255, .76);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            color: var(--color-accent);
        }
        .article-meta a {
            color: rgba(255, 255, 255, .92);
            border-bottom: 1px solid rgba(255, 255, 255, .35);
        }
        .article-meta a:hover {
            color: #fff;
            border-color: #fff;
        }
        .article-layout {
            padding: 48px 0 36px;
        }
        .article-layout .row {
            align-items: flex-start;
        }
        .article-main {
            min-width: 0;
        }
        .article-detail {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 48px clamp(24px, 4vw, 52px);
            font-size: 17px;
            line-height: 1.9;
            color: var(--color-ink);
        }
        .article-detail .article-content {
            word-break: break-word;
        }
        .article-detail .article-content>p {
            margin: 0 0 1.25em;
        }
        .article-detail .article-content h2 {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -.01em;
            margin: 2em 0 .7em;
            padding-top: 16px;
            border-top: 1px solid var(--color-line);
        }
        .article-detail .article-content h3 {
            font-size: 23px;
            font-weight: 700;
            line-height: 1.4;
            margin: 1.7em 0 .55em;
            color: var(--color-ink);
        }
        .article-detail .article-content h4 {
            font-size: 19px;
            font-weight: 700;
            margin: 1.5em 0 .5em;
        }
        .article-detail .article-content a {
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .article-detail .article-content a:hover {
            color: var(--color-primary);
            text-decoration-color: var(--color-primary);
        }
        .article-detail .article-content blockquote {
            border-left: 4px solid var(--color-primary);
            background: var(--color-primary-soft);
            margin: 1.8em 0;
            padding: 16px 22px;
            border-radius: 0 12px 12px 0;
            color: var(--color-ink-soft);
            font-size: 16px;
            line-height: 1.8;
        }
        .article-detail .article-content blockquote p {
            margin-bottom: 0;
        }
        .article-detail .article-content img {
            border-radius: 12px;
            margin: 28px 0 8px;
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .article-detail .article-content figcaption,
        .article-detail .article-content .img-caption {
            display: block;
            font-size: 13px;
            color: var(--color-muted);
            text-align: center;
            margin: 4px 0 28px;
        }
        .article-detail .article-content table {
            width: 100%;
            margin: 26px 0;
            border-collapse: collapse;
            border: 1px solid var(--color-line);
            border-radius: 8px;
            overflow: hidden;
        }
        .article-detail .article-content th,
        .article-detail .article-content td {
            padding: 12px 14px;
            border: 1px solid var(--color-line);
            font-size: 15px;
        }
        .article-detail .article-content th {
            background: var(--color-bg);
            font-weight: 700;
        }
        .article-detail .article-content ul,
        .article-detail .article-content ol {
            padding-left: 1.4em;
            margin: 0 0 1.4em;
        }
        .article-detail .article-content li {
            margin-bottom: .5em;
        }
        .article-detail .article-content strong {
            font-weight: 700;
            color: var(--color-ink);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            padding-top: 18px;
            margin-top: 20px;
            border-top: 1px solid var(--color-line);
        }
        .article-tags-label {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-ink-soft);
            margin-right: 4px;
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            transition: all .2s ease;
            border: 1px solid transparent;
        }
        .tag-chip:hover {
            background: var(--color-primary);
            color: #fff;
        }
        .article-bottom-link {
            margin-top: 28px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 26px;
            border-top: 1px solid var(--color-line);
        }
        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1px solid var(--color-line);
            color: var(--color-ink);
            border-radius: 8px;
            padding: 11px 22px;
            font-weight: 600;
            font-size: 15px;
            transition: all .2s ease;
        }
        .btn-back-home:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(26, 107, 92, .04);
        }
        .article-aside {
            position: sticky;
            top: 104px;
            padding-left: 8px;
            padding-right: 8px;
        }
        .aside-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            margin-bottom: 20px;
        }
        .aside-card .card-title {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--color-ink);
        }
        .aside-card .card-title i {
            color: var(--color-primary);
        }
        .toc-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 2px;
            max-height: 66vh;
            overflow: auto;
        }
        .toc-list a {
            display: block;
            padding: 6px 10px;
            border-radius: 6px;
            color: var(--color-ink-soft);
            font-size: 14px;
            font-weight: 500;
            border-left: 2px solid transparent;
            line-height: 1.5;
        }
        .toc-list a:hover,
        .toc-list a.is-active {
            background: var(--color-primary-soft);
            color: var(--color-primary);
            border-left-color: var(--color-primary);
        }
        .article-aside-feature {
            background: var(--color-primary-soft);
            border-left: 3px solid var(--color-primary);
            padding: 20px;
            border-radius: 10px;
        }
        .article-aside-feature .feature-title {
            font-size: 16px;
            font-weight: 800;
            margin-bottom: 6px;
            color: var(--color-primary);
        }
        .article-aside-feature p {
            font-size: 14px;
            color: var(--color-ink-soft);
            margin-bottom: 12px;
            line-height: 1.7;
        }
        .btn-sm-under {
            font-size: 13px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #fff;
            background: var(--color-primary);
            padding: 8px 14px;
            border-radius: 8px;
        }
        .btn-sm-under:hover {
            background: var(--color-primary-hover);
            color: #fff;
        }
        .article-callout {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
            background: #FBF9F4;
            border: 1px solid var(--color-line);
            border-left: 4px solid var(--color-accent);
            border-radius: 10px;
            padding: 20px 22px;
            margin: 32px 0 12px;
        }
        .article-callout .callout-icon {
            width: 44px;
            height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(182, 135, 90, .12);
            border-radius: 10px;
            color: var(--color-accent);
            font-size: 20px;
            flex-shrink: 0;
        }
        .article-callout .callout-content {
            flex: 1;
            min-width: 220px;
        }
        .article-callout .callout-content strong {
            display: block;
            color: var(--color-ink);
            font-size: 16px;
            margin-bottom: 2px;
        }
        .article-callout .callout-content span {
            color: var(--color-muted);
            font-size: 14px;
        }
        .related-section {
            padding: 30px 0 10px;
        }
        .related-section .section-head {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 26px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--color-line);
        }
        .related-section .section-head h2 {
            font-size: clamp(22px, 3vw, 30px);
            font-weight: 800;
            margin: 0;
        }
        .section-head .section-note {
            color: var(--color-muted);
            font-size: 14px;
        }
        .related-card {
            display: block;
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 24px;
            height: 100%;
            box-shadow: var(--shadow-card);
            transition: all .2s ease;
            color: var(--color-ink);
            overflow: hidden;
            position: relative;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            text-decoration: none;
            color: var(--color-ink);
            border-color: var(--color-primary-soft);
        }
        .related-card small {
            color: var(--color-accent);
            font-weight: 700;
            font-size: 12px;
            letter-spacing: .06em;
            display: block;
            margin-bottom: 10px;
        }
        .related-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .related-card p {
            color: var(--color-ink-soft);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }
        .related-card i {
            position: absolute;
            right: 15px;
            bottom: 12px;
            color: var(--color-primary);
            font-size: 18px;
            opacity: 0;
            transform: translateX(-6px);
            transition: all .2s ease;
        }
        .related-card:hover i {
            opacity: 1;
            transform: translateX(0);
        }
        .article-notfound {
            padding: 80px 0;
        }
        .notfound-box {
            max-width: 640px;
            margin: 0 auto;
            text-align: center;
            background: var(--color-white);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 56px 28px;
        }
        .notfound-box i {
            font-size: 48px;
            color: var(--color-accent);
            display: block;
            margin-bottom: 16px;
        }
        .notfound-box h1 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .notfound-box p {
            color: var(--color-muted);
            margin-bottom: 24px;
        }
        .contact-cta-section {
            margin-top: 36px;
            border-radius: var(--radius-card);
            background: var(--color-surface-sink);
            padding: 64px 1.2rem;
            background-image: linear-gradient(100deg, rgba(26, 107, 92, .35), rgba(32, 36, 33, .55)), url(/assets/images/backpic/back-3.png);
            background-size: cover;
            background-position: center;
        }
        .contact-cta-inner {
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
            color: #fff;
        }
        .contact-cta-inner h2 {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 800;
            margin-bottom: 12px;
        }
        .contact-cta-inner p {
            color: rgba(255, 255, 255, .78);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 26px;
        }
        .cta-btn-wrap {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-light-solid {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid #fff;
            color: var(--color-ink);
            border-radius: 8px;
            height: 52px;
            padding: 0 30px;
            font-weight: 700;
            transition: all .2s ease;
        }
        .btn-light-solid:hover {
            background: var(--color-primary-soft);
            border-color: var(--color-primary-soft);
            color: var(--color-primary);
            transform: translateY(-1px);
        }
        .btn-light-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .6);
            color: #fff;
            border-radius: 8px;
            height: 52px;
            padding: 0 28px;
            font-weight: 700;
            transition: all .2s ease;
        }
        .btn-light-ghost:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, .08);
            color: #fff;
            transform: translateY(-1px);
        }
        .site-footer {
            background: var(--color-surface-sink);
            color: rgba(255, 255, 255, .8);
            padding-top: 62px;
            margin-top: 40px;
        }
        .footer-top {
            border-bottom: 1px solid rgba(255, 255, 255, .12);
            padding-bottom: 42px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1.2fr 1.5fr;
            gap: 40px;
        }
        .footer-brand .logo-text {
            color: #fff;
            font-size: 24px;
        }
        .footer-brand .logo-text:hover {
            color: #fff;
        }
        .footer-brand .logo-badge {
            background: rgba(255, 255, 255, .08);
            color: var(--color-accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.85;
            margin: 20px 0 12px;
            max-width: 420px;
            color: rgba(255, 255, 255, .63);
        }
        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            letter-spacing: .04em;
            margin-bottom: 18px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, .12);
            display: inline-block;
        }
        .footer-links,
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li,
        .footer-contact li {
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .footer-links a {
            color: rgba(255, 255, 255, .68);
            font-size: 14px;
            padding: 2px 0;
            transition: color .2s ease;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            color: rgba(255, 255, 255, .68);
            font-size: 14px;
        }
        .footer-contact i {
            color: var(--color-accent);
            line-height: 1.6;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
            align-items: center;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, .48);
        }
        .footer-bottom i {
            color: var(--color-accent);
            margin-right: 4px;
        }
        @media (max-width: 1199.98px) {
            .nav-wrap {
                flex-wrap: nowrap;
            }
            .nav-cta-btn {
                padding: 0 15px;
                font-size: 13px;
            }
            .desktop-nav {
                gap: 2px;
            }
            .nav-link {
                padding: 0 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 991.98px) {
            .desktop-nav,
            .nav-mega-toggle,
            .nav-cta-btn {
                display: none;
            }
            .navbar-toggler {
                display: inline-flex;
            }
            .mobile-nav-panel {
                display: block;
            }
            .article-layout {
                padding: 34px 0 10px;
            }
            .article-aside {
                position: static;
                margin-top: 24px;
            }
            .nav-link.active::after {
                display: none;
            }
        }
        @media (max-width: 767.98px) {
            .site-header {
                position: relative;
            }
            .article-top {
                padding: 38px 0 28px;
            }
            .breadcrumb-wrap .current {
                white-space: normal;
                max-width: 100%;
            }
            .article-meta {
                gap: 8px 16px;
            }
            .container-main,
            .container-reading {
                padding-left: 18px;
                padding-right: 18px;
            }
            .logo-text {
                font-size: 21px;
            }
            .logo-sub {
                font-size: 11px;
            }
            .article-detail {
                padding: 32px 20px;
                font-size: 16px;
            }
            .article-detail .article-content h2 {
                font-size: 24px;
            }
            .article-detail .article-content h3 {
                font-size: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .contact-cta-section {
                padding: 44px 16px;
            }
            .related-card {
                margin-bottom: 16px;
            }
            .article-bottom-link {
                justify-content: center;
            }
        }
        @media (max-width: 575.98px) {
            .nav-wrap {
                min-height: 68px;
                gap: 8px;
            }
            .logo-badge {
                display: none;
            }
            .logo-block {
                min-width: 140px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .mega-grid {
                grid-template-columns: 1fr;
            }
            .related-section .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }
            *,
            *::before,
            *::after {
                animation: none !important;
                transition: none !important;
            }
        }
        .fade-in {
            opacity: 0;
            transform: translateY(16px);
        }
        @keyframes fadeUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

/* roulang page: category1 */
:root {
            --color-bg: #F7F6F2;
            --color-surface: #FFFFFF;
            --color-surface-sink: #202421;
            --color-ink: #1B1F1D;
            --color-ink-soft: #4A514D;
            --color-muted: #7B827E;
            --color-line: #E6E2D8;
            --color-primary: #1A6B5C;
            --color-primary-hover: #105047;
            --color-primary-soft: #E5EFEB;
            --color-accent: #B6875A;
            --radius-card: 12px;
            --radius-btn: 6px;
            --shadow-low: 0 1px 2px rgba(27, 31, 29, .04);
            --shadow-card: 0 1px 2px rgba(27, 31, 29, .06);
            --shadow-hover: 0 20px 40px rgba(27, 31, 29, .10);
            --font-sans: system-ui, -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-ink);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
        }
        body,
        p,
        h1,
        h2,
        h3,
        h4,
        ul,
        ol,
        figure {
            margin: 0;
        }
        ul,
        ol {
            padding: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease, border-color .2s ease, background .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        :focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container-main {
            width: 100%;
            max-width: 1200px;
            margin-right: auto;
            margin-left: auto;
            padding-right: 24px;
            padding-left: 24px;
        }
        .section-pad {
            padding: 100px 0;
        }
        .section-pad-sm {
            padding: 72px 0;
        }
        .section-head {
            max-width: 840px;
            margin-bottom: 40px;
        }
        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            letter-spacing: .12em;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 12px;
        }
        .eyebrow-no {
            width: 28px;
            height: 28px;
            border-radius: 7px;
            background: var(--color-primary-soft);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            letter-spacing: 0;
        }
        .section-title {
            font-size: 40px;
            line-height: 1.2;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-ink);
        }
        .section-lead {
            margin-top: 12px;
            font-size: 17px;
            line-height: 1.85;
            color: var(--color-ink-soft);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 52px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: .01em;
            transition: background .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease, transform .2s ease;
        }
        .btn-primary {
            background: var(--color-primary);
            border: 1px solid var(--color-primary);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 10px 20px rgba(16, 80, 71, .14);
        }
        .btn-outline-ink {
            background: transparent;
            border: 1px solid rgba(27, 31, 29, .24);
            color: var(--color-ink);
        }
        .btn-outline-ink:hover,
        .btn-outline-ink:focus {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: transparent;
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .78);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            color: #fff;
        }
        .btn-light {
            background: #fff;
            border: 1px solid #fff;
            color: var(--color-ink);
        }
        .btn-light:hover {
            background: rgba(255, 255, 255, .92);
            color: var(--color-primary-hover);
            border-color: #fff;
            transform: translateY(-1px);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1060;
            background: rgba(247, 246, 242, .96);
            border-bottom: 1px solid var(--color-line);
            backdrop-filter: none;
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            min-height: 76px;
            gap: 24px;
        }
        .logo-block {
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 24px;
            line-height: 1.2;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-primary);
            display: inline-flex;
            align-items: baseline;
        }
        .logo-badge {
            font-size: 10px;
            font-weight: 600;
            color: var(--color-accent);
            border: 1px solid currentColor;
            border-radius: 4px;
            padding: 1px 6px;
            margin-left: 8px;
            letter-spacing: .08em;
            line-height: 1.6;
        }
        .logo-sub {
            font-size: 12px;
            color: var(--color-muted);
            margin-top: 4px;
            letter-spacing: .02em;
        }
        .site-nav {
            display: flex;
            align-items: center;
            margin: 0 auto 0 40px;
            list-style: none;
            gap: 6px;
        }
        .site-nav .nav-link {
            position: relative;
            height: 76px;
            padding: 0 16px;
            display: inline-flex;
            align-items: center;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-ink);
            border-radius: 0;
        }
        .site-nav .nav-link:hover {
            color: var(--color-primary);
        }
        .site-nav .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .site-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px 2px 0 0;
        }
        .nav-cta-right {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 12px;
            margin-left: auto;
        }
        .nav-cta-right .nav-cta-btn {
            height: 44px;
            padding: 0 22px;
            border-radius: 8px;
            font-size: 14px;
            white-space: nowrap;
        }
        .nav-mega-toggle,
        .mobile-menu-trigger {
            height: 44px;
            padding: 0 16px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-ink);
            background: #fff;
            border: 1px solid var(--color-line);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .nav-mega-toggle:hover,
        .nav-mega-toggle[aria-expanded="true"] {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .mobile-menu-trigger {
            display: none;
        }
        .dropdown-menu.nav-mega-panel {
            width: 720px;
            max-width: calc(100vw - 32px);
            border: 1px solid var(--color-line);
            border-radius: 14px;
            box-shadow: 0 24px 56px rgba(27, 31, 29, .16);
            padding: 24px;
            margin-top: 10px;
            background: #fff;
        }
        .mega-grid {
            display: grid;
            grid-template-columns: 1fr 1.1fr 300px;
            gap: 24px;
        }
        .mega-label {
            font-size: 13px;
            letter-spacing: .1em;
            color: var(--color-muted);
            font-weight: 600;
            margin-bottom: 12px;
        }
        .mega-link-list {
            list-style: none;
            display: grid;
            gap: 2px;
        }
        .mega-link-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 10px;
            border-radius: 6px;
            font-size: 15px;
            color: var(--color-ink);
            font-weight: 500;
        }
        .mega-link-list a:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }
        .mega-news-text {
            display: grid;
            gap: 6px;
        }
        .mega-news-item {
            border-bottom: 1px solid var(--color-line);
            padding: 8px 0;
            font-size: 14px;
            color: var(--color-ink-soft);
            line-height: 1.6;
        }
        .mega-news-item small {
            display: block;
            font-size: 12px;
            color: var(--color-muted);
        }
        .mega-panel-card {
            background: var(--color-primary-soft);
            border-radius: 10px;
            padding: 16px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .mega-panel-card .mega-mini-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-ink);
        }
        .mega-panel-card p {
            font-size: 13px;
            color: var(--color-ink-soft);
            line-height: 1.6;
            margin-top: 4px;
        }
        .mega-panel-card .btn {
            margin-top: 12px;
            height: 38px;
            padding: 0 12px;
            font-size: 13px;
            align-self: flex-start;
        }
        .mobile-menu {
            border-top: 1px solid var(--color-line);
            background: #fff;
        }
        .mobile-menu-list {
            list-style: none;
            padding: 12px;
            display: grid;
            gap: 4px;
        }
        .mobile-menu-list a {
            display: block;
            padding: 12px 16px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-ink);
        }
        .mobile-menu-list a:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }
        .mobile-menu-list a.active {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }
        .mobile-menu-cta {
            display: flex;
            gap: 12px;
            padding: 12px 16px 20px;
        }
        .mobile-menu-cta .btn {
            flex: 1;
            height: 44px;
            padding: 0 16px;
        }
        @media (min-width: 992px) {
            .mobile-menu {
                display: none !important;
            }
        }
        @media (max-width: 991.98px) {
            .desktop-nav,
            .nav-mega-toggle,
            .nav-cta-right .nav-cta-btn {
                display: none !important;
            }
            .mobile-menu-trigger {
                display: inline-flex;
            }
            .nav-cta-right {
                margin-left: auto;
            }
            .site-nav {
                display: none;
            }
            .logo-block {
                margin-right: 0;
            }
            .logo-sub {
                max-width: 230px;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
            }
        }
        .page-banner {
            position: relative;
            min-height: 580px;
            padding: 112px 0 96px;
            color: #fff;
            overflow: hidden;
            background: var(--color-surface-sink);
        }
        .banner-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
        }
        .banner-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(95deg, rgba(13, 18, 16, .82) 0%, rgba(13, 18, 16, .56) 52%, rgba(13, 18, 16, .26) 100%);
        }
        .banner-inner {
            position: relative;
            z-index: 2;
            max-width: 860px;
            margin-right: 0;
        }
        .banner-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--color-accent);
            font-size: 13px;
            letter-spacing: .14em;
            font-weight: 600;
            text-transform: uppercase;
            margin-bottom: 18px;
        }
        .page-banner h1 {
            font-size: 56px;
            line-height: 1.12;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: #fff;
            max-width: 680px;
        }
        .banner-lead {
            font-size: 18px;
            line-height: 1.9;
            color: rgba(255, 255, 255, .86);
            max-width: 720px;
            margin: 20px 0 32px;
        }
        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .banner-actions .btn {
            height: 52px;
            padding: 0 30px;
        }
        .banner-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
            margin-top: 56px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, .22);
            max-width: 760px;
        }
        .stat-item .stat-num {
            font-size: 28px;
            line-height: 1.2;
            font-weight: 700;
            color: #fff;
        }
        .stat-item .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, .7);
        }
        .soft-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }
        .lift-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
        }
        .lift-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary-soft);
        }
        .feature-media {
            position: relative;
            background: var(--color-primary-soft);
        }
        .feature-media img {
            width: 100%;
            object-fit: cover;
            aspect-ratio: 16 / 9;
        }
        .feature-media figcaption {
            position: absolute;
            left: 0;
            bottom: 0;
            margin: 0;
            padding: 12px 16px;
            background: linear-gradient(0deg, rgba(0, 0, 0, .58), transparent);
            color: #fff;
            font-size: 13px;
            width: 100%;
        }
        .feature-media figcaption i {
            margin-right: 6px;
        }
        .main-feature-card-body {
            padding: 30px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 500;
        }
        .tag-green {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }
        .tag-line {
            border: 1px solid var(--color-line);
            color: var(--color-ink-soft);
            background: #fff;
        }
        .body-title-lg {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.35;
            margin-top: 14px;
        }
        .body-copy {
            margin-top: 12px;
            color: var(--color-ink-soft);
            font-size: 16px;
            line-height: 1.85;
        }
        .text-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            margin-top: 18px;
        }
        .text-arrow i {
            transition: transform .2s ease;
        }
        .text-arrow:hover {
            color: var(--color-primary-hover);
        }
        .text-arrow:hover i {
            transform: translateX(4px);
        }
        .capability-panel {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px;
            height: 100%;
        }
        .capability-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--color-line);
        }
        .capability-list {
            list-style: none;
            display: grid;
            gap: 0;
        }
        .capability-list li {
            display: grid;
            grid-template-columns: 36px 1fr;
            gap: 12px;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-line);
        }
        .capability-list li:last-child {
            border-bottom: 0;
        }
        .capability-list .cap-num {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .capability-list h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-ink);
        }
        .capability-list p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-muted);
            margin-top: 4px;
        }
        .deploy-cover {
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--color-primary-soft);
            box-shadow: var(--shadow-card);
        }
        .deploy-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }
        .deploy-cover figcaption {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-top: 0;
            border-radius: 0 0 var(--radius-card) var(--radius-card);
            padding: 12px 16px;
            font-size: 13px;
            color: var(--color-muted);
            margin: 0;
        }
        .deploy-list {
            display: grid;
            gap: 14px;
        }
        .deploy-row {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 22px 24px;
            box-shadow: var(--shadow-card);
            transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
        }
        .deploy-row:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary-soft);
        }
        .deploy-row-top {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .deploy-type {
            font-size: 13px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            padding: 3px 12px;
            border-radius: 999px;
            font-weight: 600;
            flex-shrink: 0;
        }
        .deploy-row h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            margin: 0;
        }
        .deploy-row p {
            margin-top: 8px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-muted);
        }
        .process-strip {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 14px;
        }
        .process-item {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 24px;
            position: relative;
            transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
        }
        .process-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary-soft);
        }
        .process-item::after {
            content: "\F138";
            font-family: "bootstrap-icons";
            position: absolute;
            right: -14px;
            top: 32px;
            z-index: 2;
            font-size: 14px;
            color: var(--color-primary);
            background: var(--color-bg);
            padding: 2px;
            display: none;
        }
        .process-item:not(:last-child)::after {
            display: block;
        }
        .process-no {
            color: var(--color-accent);
            font-size: 13px;
            letter-spacing: .1em;
            font-weight: 700;
        }
        .process-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-top: 10px;
        }
        .process-item p {
            font-size: 14px;
            color: var(--color-muted);
            margin-top: 8px;
            line-height: 1.75;
        }
        .reading-block {
            max-width: 860px;
            margin: 0 auto;
            background: var(--color-surface);
            border-radius: 16px;
            border: 1px solid var(--color-line);
            box-shadow: var(--shadow-card);
            padding: 48px;
            color: var(--color-ink-soft);
            font-size: 17px;
            line-height: 2;
        }
        .reading-block .lead-title {
            color: var(--color-ink);
            font-size: 21px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .topic-link-grid {
            margin-top: 28px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
            max-width: 860px;
            margin-left: auto;
            margin-right: auto;
        }
        .topic-link-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 26px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
        }
        .topic-link-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .topic-link-card strong {
            font-size: 17px;
            color: var(--color-ink);
            display: block;
        }
        .topic-link-card span {
            font-size: 14px;
            color: var(--color-muted);
        }
        .topic-link-card i {
            color: var(--color-primary);
            font-size: 20px;
            flex-shrink: 0;
        }
        .faq-section {
            background: var(--color-surface);
        }
        .accordion {
            max-width: 860px;
        }
        .accordion-item {
            border: 1px solid var(--color-line) !important;
            border-radius: 12px !important;
            overflow: hidden;
            margin-bottom: 12px;
            background: var(--color-surface);
        }
        .accordion-button {
            padding: 20px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-ink);
            background: var(--color-surface);
            box-shadow: none !important;
            gap: 10px;
        }
        .accordion-button::after {
            flex-shrink: 0;
            transition: transform .2s ease;
        }
        .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background: var(--color-primary-soft);
        }
        .accordion-button:not(.collapsed)::after {
            filter: none;
        }
        .accordion-body {
            padding: 8px 22px 22px;
            color: var(--color-ink-soft);
            font-size: 16px;
            line-height: 1.85;
            background: var(--color-surface);
        }
        .cta-dark {
            position: relative;
            background: var(--color-surface-sink);
            color: #fff;
            padding: 98px 0;
            overflow: hidden;
        }
        .cta-dark .cta-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
        }
        .cta-dark .cta-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(15, 18, 16, .93) 0%, rgba(15, 18, 16, .78) 55%, rgba(15, 18, 16, .64) 100%);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 56px;
        }
        .cta-eyebrow {
            font-size: 13px;
            letter-spacing: .14em;
            color: var(--color-accent);
            font-weight: 600;
            margin-bottom: 10px;
        }
        .cta-dark h2 {
            font-size: 34px;
            line-height: 1.28;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-dark .cta-desc {
            font-size: 16px;
            line-height: 1.85;
            color: rgba(255, 255, 255, .76);
            max-width: 660px;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            flex-shrink: 0;
        }
        .site-footer {
            background: var(--color-surface-sink);
            color: rgba(255, 255, 255, .74);
            padding: 80px 0 28px;
            font-size: 15px;
            line-height: 1.8;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr 1.4fr;
            gap: 50px;
        }
        .site-footer .logo-text {
            color: #fff;
        }
        .footer-brand p {
            margin-top: 18px;
            max-width: 360px;
            font-size: 15px;
            color: rgba(255, 255, 255, .62);
        }
        .footer-title {
            font-size: 15px;
            color: #fff;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: .03em;
        }
        .footer-links,
        .footer-contact {
            list-style: none;
            display: grid;
            gap: 10px;
        }
        .footer-links a,
        .footer-contact li {
            color: rgba(255, 255, 255, .64);
            transition: color .2s ease, padding-left .2s ease;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact i {
            color: var(--color-accent);
            margin-right: 6px;
        }
        .footer-bottom {
            margin-top: 64px;
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, .12);
            display: flex;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, .5);
            font-size: 14px;
        }
        @media (max-width: 1199.98px) {
            .site-nav {
                margin-left: 20px;
            }
            .nav-cta-right {
                gap: 8px;
            }
            .dropdown-menu.nav-mega-panel {
                width: 660px;
            }
            .mega-grid {
                grid-template-columns: 1fr 1fr 250px;
            }
            .process-strip {
                grid-template-columns: repeat(3, 1fr);
                row-gap: 26px;
            }
            .process-item::after {
                display: none;
            }
            .footer-grid {
                gap: 32px;
                grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
            }
        }
        @media (max-width: 991.98px) {
            .section-pad {
                padding: 72px 0;
            }
            .section-title {
                font-size: 32px;
            }
            .page-banner {
                min-height: auto;
                padding: 72px 0;
            }
            .page-banner h1 {
                font-size: 38px;
            }
            .banner-stats {
                gap: 24px;
                margin-top: 40px;
            }
            .mega-grid {
                grid-template-columns: 1fr 1fr;
            }
            .mega-grid > div:last-child {
                grid-column: 1 / -1;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .footer-brand p {
                max-width: none;
            }
            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-actions {
                width: 100%;
            }
            .cta-actions .btn {
                flex: 1;
                padding: 0 18px;
            }
            .topic-link-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 767.98px) {
            .section-pad {
                padding: 56px 0;
            }
            .page-banner {
                padding: 60px 0;
            }
            .page-banner h1 {
                font-size: 34px;
            }
            .container-main {
                padding-right: 18px;
                padding-left: 18px;
            }
            .logo-text {
                font-size: 20px;
            }
            .logo-badge {
                font-size: 9px;
            }
            .logo-sub {
                font-size: 11px;
            }
            .btn {
                padding: 0 20px;
            }
            .banner-stats {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
            .stat-item .stat-num {
                font-size: 24px;
            }
            .section-title {
                font-size: 28px;
            }
            .main-feature-card-body {
                padding: 24px;
            }
            .capability-panel {
                padding: 22px;
            }
            .reading-block {
                padding: 28px 24px;
            }
            .deploy-row {
                padding: 18px;
            }
            .process-strip {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-dark h2 {
                font-size: 28px;
            }
            .cta-actions {
                flex-direction: column;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }
        @media (max-width: 575.98px) {
            .logo-block {
                min-width: 0;
            }
            .process-strip {
                grid-template-columns: 1fr;
            }
            .banner-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .banner-actions .btn {
                width: 100%;
            }
            .feature-media img {
                aspect-ratio: 4 / 3;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }
            *,
            *::before,
            *::after {
                animation: none !important;
                transition: none !important;
            }
        }

/* roulang page: category2 */
:root{
  --color-bg:#F7F6F2;
  --color-surface:#FFFFFF;
  --color-surface-sink:#202421;
  --color-ink:#1B1F1D;
  --color-ink-soft:#4A514D;
  --color-muted:#7B827E;
  --color-line:#E6E2D8;
  --color-primary:#1A6B5C;
  --color-primary-hover:#105047;
  --color-primary-soft:#E5EFEB;
  --color-accent:#B6875A;
  --color-white:#FFFFFF;
  --radius-sm:6px;
  --radius-md:12px;
  --radius-lg:14px;
  --shadow-xs:0 1px 2px rgba(27,31,29,.04);
  --shadow-sm:0 1px 2px rgba(27,31,29,.06);
  --shadow-card:0 10px 30px rgba(27,31,29,.08);
  --shadow-lg:0 24px 56px rgba(27,31,29,.16);
  --font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{
  margin:0;
  font-family:var(--font-family);
  background:var(--color-bg);
  color:var(--color-ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--color-primary);text-decoration:none}
a:hover{color:var(--color-primary-hover)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1rem}
button{font-family:inherit}
.btn{font-family:inherit}
.container-main{
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
@media(max-width:576px){
  .container-main{padding:0 16px}
}
.skip-link{
  position:absolute;
  left:8px;
  top:-60px;
  background:var(--color-primary);
  color:#fff;
  padding:10px 18px;
  border-radius:var(--radius-sm);
  z-index:2000;
  transition:top .2s;
}
.skip-link:focus{
  top:8px;
  color:#fff;
}
:focus-visible{
  outline:2px solid var(--color-primary);
  outline-offset:2px;
}
.page-category-two .site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(247,246,242,.97);
  border-bottom:1px solid var(--color-line);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:14px;
  min-height:76px;
  position:relative;
}
.logo-block{
  display:flex;
  align-items:center;
  gap:14px;
  flex-shrink:0;
}
.logo-text{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:24px;
  font-weight:800;
  color:var(--color-ink);
  letter-spacing:-.01em;
  line-height:1.2;
}
.logo-text .logo-badge{
  font-size:11px;
  font-weight:600;
  color:var(--color-primary);
  background:var(--color-primary-soft);
  border:1px solid rgba(26,107,92,.2);
  padding:2px 8px;
  border-radius:999px;
}
.logo-sub{
  font-size:12px;
  color:var(--color-muted);
  border-left:1px solid var(--color-line);
  padding-left:14px;
  white-space:nowrap;
  line-height:1.6;
}
.site-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin:0 0 0 16px;
  padding:0;
}
.nav-item{
  margin:0;
}
.nav-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:500;
  color:var(--color-ink);
  padding:9px 16px;
  border-radius:8px;
  position:relative;
  transition:color .2s,background .2s;
}
.nav-link:hover{
  background:var(--color-primary-soft);
  color:var(--color-primary-hover);
}
.nav-link.active{
  color:var(--color-primary);
  font-weight:600;
}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:999px;
  background:var(--color-primary);
}
.nav-cta-right{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}
.navbar-toggler{
  display:none;
  border:1px solid var(--color-line);
  background:var(--color-surface);
  width:44px;
  height:44px;
  padding:8px;
  border-radius:8px;
  justify-content:center;
  align-items:center;
  font-size:22px;
  color:var(--color-ink);
}
.nav-mega{
  position:relative;
}
.nav-mega-toggle{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:44px;
  border:1px solid var(--color-line);
  background:var(--color-surface);
  color:var(--color-ink);
  font-size:14px;
  font-weight:500;
  padding:0 18px;
  border-radius:8px;
  transition:border-color .2s,background .2s,color .2s;
}
.nav-mega-toggle:hover,
.nav-mega-toggle.show{
  border-color:var(--color-primary);
  background:var(--color-primary-soft);
  color:var(--color-primary-hover);
}
.nav-cta-btn{
  height:44px;
  padding:0 20px;
  border-radius:8px;
  font-weight:600;
}
.btn-outline-ink{
  border:1px solid var(--color-ink);
  background:transparent;
  color:var(--color-ink);
}
.btn-outline-ink:hover{
  background:var(--color-ink);
  color:#fff;
  border-color:var(--color-ink);
  transform:translateY(-1px);
  box-shadow:var(--shadow-sm);
}
.btn-primary{
  background:var(--color-primary);
  border:1px solid var(--color-primary);
  color:#fff;
  border-radius:8px;
}
.btn-primary:hover,
.btn-primary:focus{
  background:var(--color-primary-hover);
  border-color:var(--color-primary-hover);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--shadow-sm);
}
.dropdown-menu.nav-mega-panel{
  width:720px;
  max-width:calc(100vw - 32px);
  margin-top:8px;
  border:1px solid var(--color-line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);
  padding:24px;
  background:var(--color-surface);
}
.mega-grid{
  display:grid;
  grid-template-columns:1.15fr 1fr 240px;
  gap:26px;
}
.mega-label{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--color-primary);
  margin-bottom:12px;
}
.mega-link-list li a,
.mega-news-item a,
.mega-feature-link{
  display:flex;
  justify-content:space-between;
  align-items:center;
  width:100%;
  padding:9px 0;
  color:var(--color-ink);
  font-size:15px;
  transition:color .2s,transform .15s;
}
.mega-link-list li a:hover,
.mega-news-item:hover span:last-child,
.mega-feature-link:hover{
  color:var(--color-primary);
  transform:translateX(3px);
}
.mega-news-item{
  border-bottom:1px dashed var(--color-line);
  padding:10px 0 12px;
}
.mega-news-item small{
  display:block;
  color:var(--color-muted);
  font-size:13px;
  margin-bottom:4px;
}
.mega-news-item span:last-child{
  color:var(--color-ink);
  font-size:15px;
  line-height:1.6;
}
.mega-feature-card{
  background:var(--color-primary-soft);
  border-radius:var(--radius-md);
  padding:20px 16px;
  height:100%;
  display:flex;
  flex-direction:column;
}
.mega-feature-card .mega-feature-ico{
  width:42px;
  height:42px;
  border-radius:10px;
  background:var(--color-primary);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  margin-bottom:12px;
}
.mega-feature-card h6{
  font-size:16px;
  font-weight:700;
  margin:0 0 8px;
}
.mega-feature-card p{
  font-size:14px;
  color:var(--color-ink-soft);
  margin-bottom:18px;
  line-height:1.6;
}
@media(max-width:1200px){
  .dropdown-menu.nav-mega-panel{
    width:640px;
    max-width:calc(100vw - 48px);
  }
  .mega-grid{
    grid-template-columns:1.1fr 1fr;
  }
  .mega-grid > div:nth-child(3){
    grid-column:1 / -1;
  }
}
@media(min-width:992px){
  .site-nav.collapse{
    display:flex !important;
  }
}
@media(max-width:991.98px){
  .nav-wrap{
    flex-wrap:wrap;
    min-height:68px;
    padding-top:6px;
    padding-bottom:6px;
  }
  .navbar-toggler{
    display:inline-flex;
    margin-left:auto;
  }
  .nav-cta-right{
    margin-left:0;
  }
  .nav-cta-right .nav-cta-btn,
  .nav-mega{
    display:none;
  }
  .site-nav.collapse{
    display:none;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    padding:8px 8px 16px;
    background:var(--color-surface);
    border-bottom:1px solid var(--color-line);
    box-shadow:0 14px 24px rgba(27,31,29,.08);
    border-radius:0 0 14px 14px;
  }
  .site-nav.collapse.show{
    display:flex;
  }
  .nav-item{
    width:100%;
  }
  .nav-link{
    padding:13px 14px;
    border-radius:8px;
    font-size:16px;
  }
  .nav-link.active::after{
    display:none;
  }
  .nav-link.active{
    background:var(--color-primary-soft);
  }
}
@media(max-width:576px){
  .logo-block{
    gap:8px;
  }
  .logo-text{
    font-size:20px;
  }
  .logo-badge{
    display:none;
  }
  .logo-sub{
    font-size:11px;
    padding-left:10px;
  }
}

.breadcrumb-bar{
  padding:22px 0 0;
}
.breadcrumb-bar .breadcrumb{
  margin:0;
}
.breadcrumb-bar .breadcrumb-item{
  font-size:14px;
  color:var(--color-muted);
}
.breadcrumb-bar .breadcrumb-item a{
  color:var(--color-muted);
}
.breadcrumb-bar .breadcrumb-item a:hover{
  color:var(--color-primary);
}
.breadcrumb-bar .breadcrumb-item.active{
  color:var(--color-ink);
  font-weight:600;
}
.manual-hero{
  position:relative;
  background:
    linear-gradient(96deg, rgba(27,31,29,.82), rgba(32,36,33,.60) 62%, rgba(32,36,33,.38)),
    url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  color:#fff;
  padding:72px 0 64px;
  margin-bottom:0;
  border-radius:0;
  overflow:hidden;
}
.manual-hero .section-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:#fff;
  border:1px solid rgba(255,255,255,.35);
  background:rgba(255,255,255,.08);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:22px;
}
.manual-hero h1{
  font-size:44px;
  line-height:1.15;
  font-weight:800;
  margin:0 0 16px;
  max-width:900px;
  letter-spacing:-.02em;
}
.manual-hero .hero-lead{
  font-size:18px;
  line-height:1.8;
  color:rgba(255,255,255,.9);
  max-width:820px;
  margin-bottom:30px;
}
.hero-feature-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:28px;
  margin-bottom:32px;
  color:rgba(255,255,255,.9);
  font-size:14px;
}
.hero-feature-line i{
  color:var(--color-accent);
  margin-right:6px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
}
.hero-actions .btn-ghost{
  border:1px solid rgba(255,255,255,.6);
  background:transparent;
  color:#fff;
  border-radius:10px;
  height:52px;
  padding:0 26px;
}
.hero-actions .btn-ghost:hover{
  background:rgba(255,255,255,.12);
  color:#fff;
  border-color:#fff;
}
.hero-actions .btn{
  height:52px;
  padding:0 28px;
  border-radius:10px;
  font-weight:600;
}
.hero-actions .btn-primary{
  background:var(--color-accent);
  border-color:var(--color-accent);
}
.hero-actions .btn-primary:hover{
  background:#a4784d;
  border-color:#a4784d;
}
@media(max-width:768px){
  .manual-hero{
    padding:56px 0 48px;
  }
  .manual-hero h1{
    font-size:32px;
  }
  .manual-hero .hero-lead{
    font-size:16px;
  }
  .hero-feature-line{
    gap:12px;
    font-size:13px;
  }
}

.guide-overview{
  padding:56px 0 0;
}
.guide-overview-card{
  background:var(--color-surface);
  border:1px solid var(--color-line);
  border-radius:var(--radius-md);
  padding:26px 28px;
  display:flex;
  gap:20px;
  align-items:flex-start;
  box-shadow:var(--shadow-xs);
}
.guide-overview .guide-large-card{
  background:var(--color-surface-sink);
  color:#fff;
  border:none;
  padding:32px 34px;
}
.guide-overview .guide-large-card h2{
  color:#fff;
  margin:0 0 8px;
}
.guide-overview .guide-large-card p{
  color:rgba(255,255,255,.78);
  margin:0;
}
.guide-icon-box{
  width:52px;
  height:52px;
  border-radius:12px;
  background:var(--color-primary-soft);
  color:var(--color-primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:24px;
  flex-shrink:0;
}
.guide-overview h2{
  font-size:21px;
  font-weight:700;
  margin:0 0 6px;
  line-height:1.4;
}
.guide-overview p{
  font-size:15px;
  margin:0;
  color:var(--color-ink-soft);
  line-height:1.8;
}
.guide-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:12px;
}
.guide-tag{
  font-size:13px;
  padding:3px 10px;
  border-radius:999px;
  background:var(--color-bg);
  border:1px solid var(--color-line);
  color:var(--color-ink-soft);
}
@media(max-width:768px){
  .guide-overview-card{
    flex-direction:column;
  }
}

.doc-section{
  padding:72px 0 20px;
}
.doc-grid{
  display:grid;
  grid-template-columns:270px minmax(0,1fr);
  gap:52px;
  align-items:flex-start;
}
.doc-sidebar{
  position:sticky;
  top:104px;
}
.doc-side-card{
  background:var(--color-surface);
  border:1px solid var(--color-line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.doc-side-header{
  padding:18px 20px 14px;
  border-bottom:1px solid var(--color-line);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.doc-side-header h2{
  font-size:16px;
  font-weight:700;
  margin:0;
}
.doc-side-header span{
  font-size:12px;
  color:var(--color-muted);
}
.manual-toc li{
  border-bottom:1px solid rgba(230,226,216,.7);
}
.manual-toc li:last-child{
  border-bottom:0;
}
.manual-toc a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:13px 20px;
  color:var(--color-ink-soft);
  font-size:14px;
  transition:background .2s,color .2s;
}
.manual-toc a i{
  color:var(--color-muted);
  font-size:12px;
  opacity:0;
  transform:translateX(-4px);
  transition:opacity .2s,transform .2s,color .2s;
}
.manual-toc a:hover,
.manual-toc a.active{
  color:var(--color-primary);
  background:var(--color-primary-soft);
}
.manual-toc a:hover i,
.manual-toc a.active i{
  opacity:1;
  transform:none;
  color:var(--color-primary);
}
.manual-toc .toc-num{
  font-weight:700;
  font-size:13px;
  color:var(--color-accent);
  min-width:22px;
}
.side-help-box{
  margin-top:16px;
  background:var(--color-primary-soft);
  border-radius:var(--radius-md);
  padding:18px;
}
.side-help-box h3{
  font-size:15px;
  font-weight:700;
  margin:0 0 6px;
  color:var(--color-primary-hover);
}
.side-help-box p{
  font-size:13px;
  color:var(--color-ink-soft);
  margin-bottom:10px;
  line-height:1.7;
}
.side-help-box a{
  font-size:14px;
  font-weight:600;
  color:var(--color-primary);
}
.manual-chapter{
  margin-bottom:44px;
  background:var(--color-surface);
  border:1px solid var(--color-line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-xs);
  padding:32px;
  scroll-margin-top:100px;
}
.chapter-heading{
  display:flex;
  align-items:center;
  gap:18px;
  border-bottom:1px solid var(--color-line);
  padding-bottom:20px;
  margin-bottom:24px;
}
.chapter-no{
  font-size:44px;
  font-weight:800;
  letter-spacing:-.04em;
  color:var(--color-primary);
  line-height:1;
}
.chapter-heading h2{
  font-size:24px;
  font-weight:800;
  margin:0;
  line-height:1.35;
}
.chapter-heading .chapter-abstract{
  color:var(--color-ink-soft);
  font-size:15px;
  line-height:1.7;
  margin-top:6px;
  max-width:720px;
}
.chapter-heading .chapter-type{
  margin-left:auto;
  align-self:flex-start;
  font-size:13px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--color-bg);
  border:1px solid var(--color-line);
  color:var(--color-muted);
  white-space:nowrap;
}
.chapter-block-title{
  font-size:18px;
  font-weight:700;
  margin:0 0 14px;
  display:flex;
  align-items:center;
  gap:10px;
}
.chapter-block-title i{
  color:var(--color-primary);
}
.operation-list li,
.plain-list li{
  position:relative;
  padding:10px 0 10px 34px;
  border-bottom:1px dashed rgba(230,226,216,.8);
  color:var(--color-ink-soft);
  font-size:15px;
  line-height:1.75;
}
.operation-list li:last-child,
.plain-list li:last-child{
  border-bottom:0;
}
.operation-list li::before,
.plain-list li::before{
  content:"\F26B";
  font-family:"bootstrap-icons";
  position:absolute;
  left:0;
  top:11px;
  color:var(--color-primary);
  font-size:15px;
}
.frame-photo{
  width:100%;
  height:260px;
  object-fit:cover;
  border-radius:var(--radius-md);
  border:1px solid var(--color-line);
}
.chapter-note{
  margin-top:16px;
  background:var(--color-bg);
  border-left:4px solid var(--color-primary);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  padding:14px 18px;
  font-size:14px;
  color:var(--color-ink-soft);
}
.chapter-note.accent{
  background:#FAF5EF;
  border-left-color:var(--color-accent);
}
.chapter-note i{
  color:var(--color-primary);
  margin-right:6px;
}
.chapter-note.accent i{
  color:var(--color-accent);
}
.field-label{
  display:inline-block;
  font-size:13px;
  padding:4px 12px;
  border-radius:999px;
  background:var(--color-bg);
  border:1px solid var(--color-line);
  color:var(--color-muted);
  margin:2px 6px 2px 0;
  transition:all .2s;
}
.field-label:hover{
  border-color:var(--color-primary);
  color:var(--color-primary);
  background:var(--color-primary-soft);
}
.step-mini{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
}
.step-mini .step-mini-card{
  background:var(--color-bg);
  border:1px solid var(--color-line);
  border-radius:10px;
  padding:16px;
}
.step-mini .step-mini-card small{
  display:inline-block;
  font-size:12px;
  color:var(--color-primary);
  font-weight:700;
  margin-bottom:6px;
}
.step-mini .step-mini-card p{
  font-size:14px;
  color:var(--color-ink-soft);
  margin:0;
  line-height:1.7;
}
.table-wrap{
  border-radius:10px;
  border:1px solid var(--color-line);
  background:var(--color-surface);
  overflow:hidden;
  margin-bottom:18px;
}
.table-wrap table{
  margin:0;
  width:100%;
}
.table-wrap th{
  background:var(--color-bg);
  font-size:13px;
  font-weight:700;
  letter-spacing:.05em;
  color:var(--color-ink);
  border-bottom:1px solid var(--color-line) !important;
  white-space:nowrap;
}
.table-wrap td,
.table-wrap th{
  padding:14px 16px;
  border-color:var(--color-line) !important;
  font-size:14px;
  vertical-align:middle;
}
.table-wrap td{
  color:var(--color-ink-soft);
  background:#fff;
}
@media(max-width:991.98px){
  .doc-grid{
    grid-template-columns:1fr;
    gap:28px;
  }
  .doc-sidebar{
    position:static;
  }
  .doc-side-card{
    top:auto;
  }
  .manual-toc{
    display:flex;
    flex-wrap:wrap;
  }
  .manual-toc li{
    border:0;
  }
  .manual-toc a{
    padding:10px 14px;
    border-radius:8px;
    margin:2px;
  }
  .manual-toc a i{
    display:none;
  }
}
@media(max-width:576px){
  .guide-overview-card,
  .manual-chapter{
    padding:18px;
  }
  .chapter-heading{
    flex-wrap:wrap;
    gap:10px;
  }
  .chapter-type{
    margin-left:0 !important;
  }
  .step-mini{
    grid-template-columns:1fr;
  }
  .manual-chapter{
    padding:22px 18px;
  }
  .chapter-no{
    font-size:34px;
  }
}

.faq-section{
  background:var(--color-surface);
  border-top:1px solid var(--color-line);
  border-bottom:1px solid var(--color-line);
  padding:72px 0;
}
.section-head{
  margin-bottom:38px;
}
.section-kicker{
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--color-primary);
  text-transform:uppercase;
  margin-bottom:10px;
}
.section-head h2{
  font-size:32px;
  font-weight:800;
  margin:0;
  line-height:1.3;
}
.section-head p{
  color:var(--color-muted);
  font-size:15px;
  margin-top:8px;
  margin-bottom:0;
}
.accordion{
  max-width:900px;
  margin:0 auto;
}
.accordion-item{
  border:0;
  background:var(--color-surface);
  margin-bottom:12px;
  border-radius:10px !important;
  overflow:hidden;
  box-shadow:0 0 0 1px var(--color-line) inset;
}
.accordion-item:first-of-type,
.accordion-item:last-of-type{
  border-radius:10px !important;
}
.accordion-button{
  background:var(--color-surface);
  color:var(--color-ink);
  font-size:17px;
  font-weight:600;
  padding:19px 22px;
  box-shadow:none;
  border:0;
}
.accordion-button:not(.collapsed){
  background:var(--color-primary-soft);
  color:var(--color-primary-hover);
  box-shadow:none;
}
.accordion-button:focus{
  box-shadow:0 0 0 2px rgba(26,107,92,.28);
  outline:0;
}
.accordion-button::after{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%231A6B5C'%3e%3cpath fill-rule='evenodd' d='M8 2a1 1 0 0 1 1 1v4h4a1 1 0 1 1 0 2H9v4a1 1 0 1 1-2 0V9H3a1 1 0 0 1 0-2h4V3a1 1 0 0 1 1-1z'/%3e%3c/svg%3e");
}
.accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%231A6B5C'%3e%3cpath fill-rule='evenodd' d='M2 8a1 1 0 0 1 1-1h10a1 1 0 1 1 0 2H3a1 1 0 0 1-1-1z'/%3e%3c/svg%3e");
}
.accordion-body{
  padding:6px 22px 22px;
  color:var(--color-ink-soft);
  font-size:16px;
  line-height:1.85;
  border-top:1px solid rgba(230,226,216,.7);
}
@media(max-width:576px){
  .section-head h2{
    font-size:26px;
  }
  .faq-section{
    padding:56px 0;
  }
}

.contact-cta{
  position:relative;
  background:var(--color-surface-sink);
  color:#fff;
  padding:70px 0;
}
.contact-cta .container-main{
  position:relative;
  z-index:2;
}
.contact-cta .cta-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:50px;
  align-items:center;
}
.contact-cta .section-kicker{
  color:var(--color-accent);
}
.contact-cta h2{
  font-size:34px;
  font-weight:800;
  margin:0 0 18px;
  line-height:1.3;
}
.contact-cta p{
  color:rgba(255,255,255,.78);
  font-size:16px;
  margin:0;
  max-width:560px;
}
.contact-cta .cta-btn-row{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:16px;
}
.contact-cta .btn-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  height:56px;
  padding:0 32px;
  border-radius:10px;
  background:var(--color-accent);
  border:1px solid var(--color-accent);
  color:#fff;
  font-weight:600;
  transition:all .2s;
}
.contact-cta .btn-brand:hover{
  background:#a4784d;
  border-color:#a4784d;
  transform:translateY(-2px);
  color:#fff;
  box-shadow:0 12px 28px rgba(0,0,0,.18);
}
.contact-cta .btn-line{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:rgba(255,255,255,.8);
  background:transparent;
  border:1px solid rgba(255,255,255,.35);
  padding:10px 22px;
  border-radius:8px;
  font-size:14px;
  transition:all .2s;
}
.contact-cta .btn-line:hover{
  background:rgba(255,255,255,.1);
  color:#fff;
}
@media(max-width:768px){
  .contact-cta .cta-grid{
    grid-template-columns:1fr;
    gap:30px;
  }
  .contact-cta h2{
    font-size:28px;
  }
}

.site-footer{
  background:var(--color-surface-sink);
  color:rgba(255,255,255,.8);
  padding-top:72px;
}
.site-footer .container-main>div.footer-top{
  padding-bottom:40px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:52px;
}
.site-footer .logo-text{
  color:#fff;
}
.site-footer .logo-text .logo-badge{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.15);
  color:rgba(255,255,255,.85);
}
.footer-brand p{
  font-size:14px;
  margin-top:18px;
  color:rgba(255,255,255,.62);
  line-height:1.8;
}
.footer-title{
  font-size:16px;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
}
.footer-links li,
.footer-contact li{
  margin-bottom:10px;
}
.footer-links a{
  color:rgba(255,255,255,.68);
  font-size:14px;
  transition:color .2s,padding-left .2s;
}
.footer-links a:hover{
  color:#fff;
  padding-left:4px;
}
.footer-contact li{
  font-size:14px;
  color:rgba(255,255,255,.68);
  display:flex;
  gap:8px;
  line-height:1.6;
}
.footer-contact i{
  color:var(--color-accent);
  margin-top:3px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.55);
}
.footer-bottom a{
  color:rgba(255,255,255,.7);
}
@media(max-width:991.98px){
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:40px;
  }
}
@media(max-width:576px){
  .site-footer{
    padding-top:56px;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:32px;
  }
  .footer-bottom{
    flex-direction:column;
  }
}
@media(prefers-reduced-motion:reduce){
  html{
    scroll-behavior:auto;
  }
  *,
  *::before,
  *::after{
    transition:opacity .01s linear !important;
    animation:opacity .01s linear !important;
  }
}