/* roulang page: index */
:root{
  --ink:#0E4B4A;
  --ink-deep:#093231;
  --ink-light:#16706C;
  --aqua:#18A999;
  --clay:#DE6B4A;
  --clay-dark:#C4552F;
  --bg:#FAF8F3;
  --card:#FFFFFF;
  --soft:#F1EEE7;
  --line:#E4E0D6;
  --text:#1E2523;
  --muted:#5A625F;
  --weak:#8A918D;
  --ok:#2F8F5B;
  --warn:#C9891F;
  --danger:#C0453A;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,50,48,.06);
  --sh-2:0 8px 24px -12px rgba(16,50,48,.20);
  --sec:88px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --num:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.88;
  letter-spacing:.01em;
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:var(--ink-light);text-decoration:none;transition:color .18s ease,background-color .18s ease,transform .18s ease;}
a:hover{color:var(--aqua);}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.35;text-wrap:balance;}
p{margin:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.sec{padding:var(--sec) 0;}
.sec-tight{padding:56px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.sec-head h2{font-size:30px;position:relative;padding-left:16px;}
.sec-head h2::before{content:"";position:absolute;left:0;top:.28em;width:4px;height:.95em;background:var(--ink);border-radius:2px;}
.sec-head .sec-sub{margin-top:10px;color:var(--muted);font-size:15px;max-width:620px;}
.more-link{color:var(--ink-light);font-weight:600;font-size:15px;white-space:nowrap;}
.more-link:hover{color:var(--clay);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--ink);background:rgba(14,75,74,.08);border-radius:999px;padding:6px 14px;font-weight:600;}

/* 顶部细条 */
.topbar{background:var(--ink-deep);color:#DCE9E7;font-size:13px;min-height:36px;display:flex;align-items:center;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar p{color:#DCE9E7;}
.topbar .topbar-actions{display:flex;align-items:center;gap:14px;}
.topbar a{color:#BFDDDA;}
.topbar a:hover{color:#fff;}
.topbar-close{color:#9FC2BF;font-size:16px;line-height:1;padding:4px 6px;border-radius:6px;}
.topbar-close:hover{background:rgba(255,255,255,.12);color:#fff;}

/* Header */
.site-header{position:sticky;top:0;z-index:60;background:var(--card);border-bottom:1px solid var(--line);transition:box-shadow .18s ease;}
.site-header.is-stuck{box-shadow:0 6px 20px -14px rgba(16,50,48,.35);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:19px;font-weight:700;letter-spacing:-.01em;}
.brand:hover{color:var(--ink);}
.brand-mark{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--ink) 0%,var(--ink-light) 100%);position:relative;flex:0 0 28px;}
.brand-mark::after{content:"";position:absolute;left:8px;top:8px;width:12px;height:12px;border-radius:3px;background:var(--aqua);}
.brand-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{position:relative;display:block;padding:9px 14px;border-radius:999px;color:var(--muted);font-size:15px;font-weight:500;}
.main-nav a::after{content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;background:var(--ink);transition:left .18s ease,right .18s ease;border-radius:2px;}
.main-nav a:hover{color:var(--ink);background:rgba(14,75,74,.05);}
.main-nav a:hover::after{left:14px;right:14px;}
.main-nav a.is-active{color:var(--ink);background:rgba(14,75,74,.08);font-weight:600;}
.main-nav a.is-active::after{left:14px;right:14px;}
.header-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;color:var(--ink);background:var(--card);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-weight:600;font-size:16px;border:1px solid transparent;transition:all .18s ease;line-height:1;}
.btn-primary{background:var(--clay);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--clay-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline{background:transparent;color:var(--ink);border-color:rgba(14,75,74,.35);}
.btn-outline:hover{background:rgba(14,75,74,.06);color:var(--ink);transform:translateY(-1px);border-color:var(--ink);}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.4);}
.btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:15px;}
.btn-block{width:100%;}

/* Hero */
.hero{padding:64px 0 72px;background:
  linear-gradient(180deg,rgba(14,75,74,.055) 0%,rgba(250,248,243,0) 78%);
  position:relative;overflow:hidden;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero h1{font-size:42px;line-height:1.24;margin:18px 0 16px;color:var(--ink-deep);}
.hero h1 .hl{color:var(--clay);}
.hero-sub{font-size:19px;color:var(--ink-light);font-weight:600;margin-bottom:14px;}
.hero-desc{color:var(--muted);font-size:16.5px;max-width:560px;}
.hero-actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap;}
.hero-media{position:relative;border-radius:18px;overflow:hidden;box-shadow:var(--sh-2);}
.hero-media img{width:100%;height:400px;object-fit:cover;border-radius:18px;}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(150deg,rgba(14,75,74,.32) 0%,rgba(9,50,49,.12) 60%,rgba(9,50,49,0) 100%);}
.hero-badge-float{position:absolute;left:20px;bottom:20px;right:20px;background:rgba(255,255,255,.94);border-radius:12px;padding:14px 16px;display:flex;gap:14px;align-items:center;box-shadow:var(--sh-1);z-index:2;}
.hero-badge-float strong{font-family:var(--num);font-size:22px;color:var(--ink);}
.hero-badge-float span{font-size:13px;color:var(--muted);display:block;line-height:1.5;}

/* 信任条 */
.trust{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.trust-item{display:flex;align-items:center;gap:12px;padding:24px 20px;border-right:1px solid var(--line);}
.trust-item:last-child{border-right:0;}
.trust-item svg{width:22px;height:22px;flex:0 0 22px;color:var(--aqua);}
.trust-item b{display:block;font-size:15px;font-weight:600;color:var(--ink);}
.trust-item small{display:block;color:var(--weak);font-size:12.5px;line-height:1.5;}

/* 价值主张 1大2小 */
.value-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;align-items:stretch;}
.value-main{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:all .18s ease;}
.value-main:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(14,75,74,.3);}
.value-main img{width:100%;height:230px;object-fit:cover;border-radius:0;}
.value-main .pad{padding:26px;}
.value-main h3{font-size:21px;color:var(--ink-deep);margin-bottom:12px;}
.value-main p{color:var(--muted);font-size:15.5px;}
.value-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.value-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:all .18s ease;}
.value-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(14,75,74,.3);}
.value-card .dot{width:34px;height:34px;border-radius:10px;background:rgba(24,169,153,.12);display:flex;align-items:center;justify-content:center;color:var(--ink-light);font-weight:700;font-family:var(--num);margin-bottom:14px;}
.value-card h3{font-size:18px;color:var(--ink-deep);margin-bottom:8px;}
.value-card p{color:var(--muted);font-size:15px;}

/* 功能分组 tabs */
.feat-tabs{display:flex;gap:8px;border-bottom:1px solid var(--line);margin-bottom:32px;overflow-x:auto;scrollbar-width:thin;}
.feat-tab{padding:14px 20px;font-size:16px;font-weight:600;color:var(--muted);border-bottom:3px solid transparent;white-space:nowrap;background:none;transition:all .18s ease;margin-bottom:-1px;}
.feat-tab:hover{color:var(--ink);}
.feat-tab.is-active{color:var(--ink);border-bottom-color:var(--ink);}
.feat-panel{display:none;grid-template-columns:repeat(3,1fr);gap:24px;}
.feat-panel.is-active{display:grid;}
.feat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:all .18s ease;}
.feat-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(14,75,74,.3);}
.feat-card svg{width:26px;height:26px;color:var(--aqua);margin-bottom:16px;}
.feat-card h3{font-size:18px;color:var(--ink-deep);margin-bottom:10px;}
.feat-card p{color:var(--muted);font-size:15px;flex:1;}
.feat-card .more-link{margin-top:18px;align-self:flex-end;font-size:14px;}

/* Z 字图文 */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0;}
.zig + .zig{border-top:1px solid var(--line);}
.zig-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);}
.zig-media img{width:100%;height:320px;object-fit:cover;border-radius:var(--r-card);}
.zig-body h3{font-size:21px;color:var(--ink-deep);margin-bottom:14px;}
.zig-body p{color:var(--muted);font-size:15.5px;}
.zig-body ul{margin:18px 0 20px;}
.zig-body li{position:relative;padding-left:18px;color:var(--muted);font-size:15px;margin-bottom:8px;}
.zig-body li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;background:var(--ink);border-radius:2px;}
.zig.reverse .zig-media{order:2;}

/* 案例 */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.case-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:all .18s ease;}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(14,75,74,.3);}
.case-card img{width:100%;height:170px;object-fit:cover;border-radius:0;}
.case-card .pad{padding:24px;}
.case-card .org{font-size:13px;color:var(--aqua);font-weight:600;margin-bottom:10px;}
.case-metric{font-family:var(--num);font-size:32px;font-weight:700;color:var(--ink);line-height:1.2;}
.case-metric span{font-size:14px;color:var(--weak);font-family:var(--font);font-weight:400;margin-left:6px;}
.case-card .concl{margin-top:12px;color:var(--muted);font-size:14.5px;}

/* 价格 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.price-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);transition:all .18s ease;position:relative;}
.price-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.price-card.is-featured{border:1.5px solid var(--ink);transform:translateY(-8px);box-shadow:var(--sh-2);}
.price-card.is-featured:hover{transform:translateY(-11px);}
.price-badge{position:absolute;top:-13px;left:28px;background:var(--clay);color:#fff;font-size:12.5px;font-weight:600;padding:4px 14px;border-radius:999px;}
.price-card h3{font-size:19px;color:var(--ink-deep);margin-bottom:6px;}
.price-card .price-desc{font-size:13.5px;color:var(--weak);margin-bottom:18px;}
.price-amount{font-family:var(--num);font-size:30px;font-weight:700;color:var(--ink);margin-bottom:20px;line-height:1.2;}
.price-amount small{font-size:14px;color:var(--weak);font-family:var(--font);font-weight:400;margin-left:4px;}
.price-list{margin-bottom:24px;}
.price-list li{position:relative;padding-left:22px;font-size:15px;color:var(--muted);margin-bottom:10px;}
.price-list li::before{content:"";position:absolute;left:2px;top:.55em;width:10px;height:6px;border-left:2px solid var(--aqua);border-bottom:2px solid var(--aqua);transform:rotate(-45deg);}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:all .18s ease;}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(14,75,74,.3);}
.thumb{position:relative;padding-top:56.25%;background:var(--soft);overflow:hidden;}
.thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease;}
.news-card:hover .thumb img{transform:scale(1.04);}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.badge{display:inline-block;font-size:12.5px;font-weight:600;padding:4px 12px;border-radius:999px;background:rgba(14,75,74,.08);color:var(--ink);align-self:flex-start;}
.news-body h3{font-size:18px;line-height:1.5;color:var(--ink-deep);margin:14px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body h3 a{color:inherit;}
.news-body h3 a:hover{color:var(--ink-light);}
.news-body .excerpt{color:var(--muted);font-size:14.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:18px;}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:14px;font-size:13px;color:var(--weak);}
.news-meta .arrow{color:var(--ink-light);font-weight:600;}
.empty-state{grid-column:1/-1;min-height:220px;border:1px dashed var(--line);border-radius:var(--r-card);background:var(--card);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;padding:32px;}
.empty-state svg{width:36px;height:36px;color:var(--weak);}
.empty-state b{font-size:16px;color:var(--ink);font-weight:600;}
.empty-state span{font-size:14px;color:var(--weak);}

/* FAQ */
.faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:border-color .18s ease;}
.faq-item.is-open{border-color:rgba(14,75,74,.32);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--ink-deep);}
.faq-q:hover{color:var(--ink-light);}
.faq-icon{flex:0 0 20px;width:20px;height:20px;position:relative;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink-light);border-radius:2px;transition:transform .18s ease;}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a-inner{padding:0 24px 22px;color:var(--muted);font-size:15px;line-height:1.85;}

/* 底部转化带 */
.cta-band{background:var(--ink-deep);color:#E6F0EE;padding:56px 0;}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:32px;}
.cta-band h2{font-size:26px;color:#fff;margin-bottom:8px;}
.cta-band p{font-size:15px;color:#B9D2CE;}
.cta-band .btn-primary{background:var(--clay);}
.cta-band .btn-primary:hover{background:var(--clay-dark);}

/* 页脚 */
.site-footer{background:var(--ink-deep);color:#B9D2CE;padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:44px;}
.footer-brand .brand{color:#fff;margin-bottom:16px;}
.footer-brand .brand:hover{color:#fff;}
.footer-brand .brand-mark{background:linear-gradient(135deg,#16706C,#18A999);}
.footer-brand p{color:#9FC2BF;line-height:1.85;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-col li{margin-bottom:11px;}
.footer-col a{color:#B9D2CE;}
.footer-col a:hover{color:var(--aqua);transform:translateX(2px);display:inline-block;}
.footer-info p{color:#9FC2BF;margin-bottom:10px;line-height:1.8;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#8FB4B0;font-size:13.5px;}

/* 移动端抽屉 */
.mnav{position:fixed;top:0;right:0;width:min(84vw,340px);height:100%;background:var(--card);z-index:120;transform:translateX(105%);transition:transform .24s ease;padding:22px;overflow-y:auto;box-shadow:-12px 0 30px -20px rgba(16,50,48,.4);}
.mnav.is-open{transform:translateX(0);}
.mnav-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.mnav-head .brand{font-size:17px;}
.mnav-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);color:var(--ink);font-size:20px;line-height:1;}
.mnav-list{display:flex;flex-direction:column;gap:6px;margin-bottom:24px;}
.mnav-list a{padding:13px 16px;border-radius:10px;color:var(--muted);font-size:16px;font-weight:500;}
.mnav-list a:hover{background:var(--soft);color:var(--ink);}
.mnav-list a.is-active{background:rgba(14,75,74,.08);color:var(--ink);font-weight:600;}
.mnav-contact{border-top:1px solid var(--line);padding-top:18px;color:var(--muted);font-size:14px;line-height:1.9;}
.mnav-mask{position:fixed;inset:0;background:rgba(9,50,49,.42);z-index:110;opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;}
.mnav-mask.is-open{opacity:1;visibility:visible;}
body.nav-locked{overflow:hidden;}

@media (max-width:1199px){
  .hero-grid{gap:40px;}
  .hero h1{font-size:36px;}
}
@media (max-width:1023px){
  :root{--sec:72px;}
  .main-nav,.header-cta .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-media img{height:280px;}
  .value-grid{grid-template-columns:1fr;}
  .feat-panel.is-active{grid-template-columns:repeat(2,1fr);}
  .case-grid,.news-grid{grid-template-columns:repeat(2,1fr);}
  .price-grid{grid-template-columns:1fr;gap:20px;}
  .price-card.is-featured{transform:none;order:-1;}
  .price-card.is-featured:hover{transform:translateY(-3px);}
  .zig{grid-template-columns:1fr;gap:28px;padding:32px 0;}
  .zig.reverse .zig-media{order:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .sec-head h2{font-size:22px;}
  .hero{padding:40px 0 48px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:17px;}
  .hero-media img{height:220px;}
  .trust-grid{grid-template-columns:1fr 1fr;}
  .trust-item{border-right:0;border-bottom:1px solid var(--line);padding:18px 16px;}
  .feat-panel.is-active{grid-template-columns:1fr;}
  .case-grid,.news-grid{grid-template-columns:1fr;}
  .cta-band .inner{flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:519px){
  .hidden-xs{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
}

/* roulang page: article */
:root{
  --c-main:#0E4B4A;
  --c-main-dark:#093231;
  --c-main-light:#16706C;
  --c-accent:#18A999;
  --c-cta:#DE6B4A;
  --c-cta-hover:#C4552F;
  --c-bg:#FAF8F3;
  --c-surface:#FFFFFF;
  --c-surface-2:#F1EEE7;
  --c-line:#E4E0D6;
  --c-text:#1E2523;
  --c-text-2:#5A625F;
  --c-text-3:#8A918D;
  --c-success:#2F8F5B;
  --c-warn:#C9891F;
  --c-danger:#C0453A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,50,48,.06);
  --shadow-2:0 8px 24px -12px rgba(16,50,48,.20);
  --sp-section:88px;
  --sp-section-md:72px;
  --sp-section-sm:56px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-num:"Inter",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.88;
  color:var(--c-text);
  background:var(--c-bg);
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-main-light);text-decoration:none;transition:all .18s ease;}
a:hover{color:var(--c-accent);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--c-main);outline-offset:2px;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;color:var(--c-text);letter-spacing:-.01em;line-height:1.3;}
h1{font-size:42px;}
h2{font-size:30px;}
h3{font-size:21px;font-weight:600;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 1.2em;padding-left:1.4em;}
li{margin-bottom:.55em;}
hr{border:0;border-top:1px solid var(--c-line);margin:2em 0;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.16em;color:var(--c-accent);font-weight:700;text-transform:uppercase;}
.section{padding:var(--sp-section) 0;}
.section-title{font-size:30px;margin-bottom:12px;}
.section-lead{color:var(--c-text-2);font-size:16px;max-width:760px;margin-bottom:32px;}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.text-link{color:var(--c-main-light);font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:6px;transition:all .18s ease;}
.text-link::after{content:"→";transition:transform .18s ease;}
.text-link:hover{color:var(--c-cta);}
.text-link:hover::after{transform:translateX(4px);}

/* --------- Header --------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 20px -12px rgba(16,50,48,.22);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;transition:min-height .18s ease;}
.site-header.is-scrolled .nav-wrap{min-height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-main);font-weight:700;font-size:19px;letter-spacing:-.01em;}
.brand:hover{color:var(--c-main);}
.brand-mark{width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,var(--c-main) 0%,var(--c-accent) 100%);position:relative;flex:0 0 28px;}
.brand-mark::after{content:"";position:absolute;inset:8px;border-radius:4px;background:rgba(255,255,255,.85);}
.brand-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap;}
.main-nav a{
  position:relative;display:inline-block;padding:10px 14px;border-radius:999px;
  font-size:15px;color:var(--c-text);font-weight:500;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;background:var(--c-main);
  transition:left .18s ease,right .18s ease;border-radius:2px;
}
.main-nav a:hover{color:var(--c-main);}
.main-nav a:hover::after{left:14px;right:14px;}
.main-nav a.is-active{background:rgba(14,75,74,.08);color:var(--c-main);font-weight:600;}
.main-nav a.is-active::after{left:14px;right:14px;}
.header-cta{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 22px;height:48px;border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:all .18s ease;text-align:center;white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px;}
.btn-primary{background:var(--c-cta);color:#fff;}
.btn-primary:hover{background:var(--c-cta-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-outline{background:transparent;color:var(--c-main);border-color:rgba(14,75,74,.35);}
.btn-outline:hover{background:rgba(14,75,74,.06);color:var(--c-main);border-color:var(--c-main);transform:translateY(-1px);}
.btn-ghost{background:var(--c-surface-2);color:var(--c-main);}
.btn-ghost:hover{background:#e8e4da;color:var(--c-main);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--c-main);}
.btn-light:hover{background:#fff;color:var(--c-cta);transform:translateY(-1px);box-shadow:var(--shadow-2);}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  width:20px;height:2px;background:var(--c-main);border-radius:2px;transition:all .18s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.drawer{
  position:fixed;inset:0;z-index:120;pointer-events:none;
}
.drawer-mask{position:absolute;inset:0;background:rgba(9,50,49,.45);opacity:0;transition:opacity .18s ease;}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(360px,88vw);background:#fff;
  box-shadow:-12px 0 40px -20px rgba(16,50,48,.35);
  transform:translateX(100%);transition:transform .22s ease;
  display:flex;flex-direction:column;padding:22px 22px 28px;overflow-y:auto;
}
.drawer.is-open{pointer-events:auto;}
.drawer.is-open .drawer-mask{opacity:1;}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);background:#fff;font-size:22px;color:var(--c-text-2);cursor:pointer;line-height:1;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-nav a{padding:13px 14px;border-radius:10px;color:var(--c-text);font-weight:500;font-size:16px;}
.drawer-nav a.is-active{background:rgba(14,75,74,.08);color:var(--c-main);font-weight:600;}
.drawer-nav a:hover{background:var(--c-surface-2);color:var(--c-main);}
.drawer-meta{border-top:1px solid var(--c-line);padding-top:18px;font-size:14px;color:var(--c-text-2);}
.drawer-meta strong{display:block;font-size:15px;color:var(--c-main);margin-bottom:6px;}

/* --------- Breadcrumb --------- */
.crumb-bar{background:var(--c-surface-2);border-bottom:1px solid var(--c-line);}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13.5px;color:var(--c-text-2);padding:20px 0;}
.crumb a{color:var(--c-main-light);}
.crumb a:hover{color:var(--c-cta);}
.crumb .sep{color:var(--c-text-3);}
.crumb .cur{color:var(--c-text-3);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* --------- Article header --------- */
.article-head{padding:44px 0 0;}
.article-head .chip{
  display:inline-block;padding:5px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(14,75,74,.08);color:var(--c-main);margin-bottom:16px;
}
.article-title{font-size:38px;line-height:1.28;margin-bottom:18px;letter-spacing:-.01em;}
.article-meta{display:flex;flex-wrap:wrap;gap:14px;color:var(--c-text-3);font-size:14px;align-items:center;margin-bottom:26px;}
.article-meta .dot{width:1px;height:14px;background:var(--c-line);display:inline-block;}
.article-cover{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);margin-bottom:0;}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}

/* --------- Layout --------- */
.read-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;padding:56px 0 var(--sp-section);align-items:start;}
.read-main{min-width:0;}
.read-body{max-width:820px;}
.read-body h2{
  font-size:26px;margin:2.2em 0 .9em;padding-left:14px;border-left:3px solid var(--c-main);line-height:1.35;
}
.read-body h2:first-child{margin-top:0;}
.read-body h3{font-size:20px;color:var(--c-main-light);margin:1.8em 0 .8em;font-weight:600;}
.read-body p{margin-bottom:1.25em;line-height:1.9;color:#28302E;}
.read-body ul,.read-body ol{margin:0 0 1.4em;padding-left:0;list-style:none;}
.read-body ul li{position:relative;padding-left:22px;margin-bottom:.6em;line-height:1.85;}
.read-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--c-accent);}
.read-body ol{counter-reset:li;padding-left:0;}
.read-body ol li{position:relative;padding-left:30px;margin-bottom:.6em;line-height:1.85;counter-increment:li;}
.read-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.18em;width:20px;height:20px;border-radius:6px;
  background:rgba(14,75,74,.1);color:var(--c-main);font-size:12.5px;font-weight:700;
  display:flex;align-items:center;justify-content:center;font-family:var(--font-num);
}
.read-body blockquote{
  margin:1.6em 0;padding:18px 22px;background:var(--c-surface-2);
  border-left:4px solid var(--c-accent);border-radius:0 10px 10px 0;color:var(--c-text-2);font-size:16px;
}
.read-body blockquote p{margin-bottom:.6em;color:var(--c-text-2);}
.read-body blockquote p:last-child{margin-bottom:0;}
.read-body img{border-radius:var(--radius-img);margin:1.6em 0 .6em;}
.read-body figcaption,.read-body .caption{font-size:13px;color:var(--c-text-3);text-align:center;margin-bottom:1.6em;}
.read-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;border-radius:10px;overflow:hidden;}
.read-body table th{background:rgba(14,75,74,.08);color:var(--c-main);text-align:left;padding:12px 14px;font-weight:600;font-size:14.5px;}
.read-body table td{padding:12px 14px;border-top:1px solid var(--c-line);}
.read-body table tr:nth-child(even) td{background:var(--c-surface-2);}
.note{
  margin:1.6em 0;padding:16px 20px;border-radius:0 10px 10px 0;font-size:15px;line-height:1.8;
}
.note p{margin-bottom:.6em;font-size:15px;}
.note p:last-child{margin-bottom:0;}
.note-info{background:rgba(24,169,153,.09);border-left:4px solid var(--c-accent);}
.note-warn{background:rgba(201,137,31,.10);border-left:4px solid var(--c-warn);}
.note-danger{background:rgba(192,69,58,.09);border-left:4px solid var(--c-danger);}

/* --------- Sidebar --------- */
.side{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px;}
.side-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);}
.side-card h4{font-size:15px;color:var(--c-main);margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--c-line);font-weight:600;}
.toc-list{list-style:none;padding:0;margin:0;font-size:14px;}
.toc-list li{margin-bottom:2px;}
.toc-list a{display:block;padding:7px 10px;border-radius:8px;color:var(--c-text-2);border-left:2px solid transparent;}
.toc-list a:hover{background:var(--c-surface-2);color:var(--c-main-light);}
.toc-list a.is-active{background:rgba(14,75,74,.08);color:var(--c-main);font-weight:600;border-left-color:var(--c-main);}
.side-list{list-style:none;padding:0;margin:0;}
.side-list li{padding:12px 0;border-bottom:1px dashed var(--c-line);}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list a{font-size:14.5px;color:var(--c-text);line-height:1.6;display:block;}
.side-list a:hover{color:var(--c-cta);}
.side-list .rank{display:inline-block;width:20px;height:20px;border-radius:6px;background:rgba(14,75,74,.1);color:var(--c-main);font-size:12px;font-weight:700;text-align:center;line-height:20px;margin-right:8px;font-family:var(--font-num);}
.side-list .rank.top{background:var(--c-cta);color:#fff;}

/* --------- Empty state --------- */
.empty-box{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);padding:64px 32px;text-align:center;box-shadow:var(--shadow-1);}
.empty-box svg{width:52px;height:52px;margin:0 auto 18px;display:block;stroke:var(--c-text-3);}
.empty-box h3{font-size:20px;margin-bottom:10px;}
.empty-box p{color:var(--c-text-2);font-size:15px;margin-bottom:22px;}

/* --------- Tags / nav --------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:44px 0 0;}
.tag-row .badge{
  display:inline-block;padding:6px 14px;border-radius:999px;font-size:13px;font-weight:500;
  background:var(--c-surface-2);color:var(--c-text-2);border:1px solid var(--c-line);
}
.tag-row .badge:hover{border-color:rgba(14,75,74,.4);color:var(--c-main);}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:44px;}
.post-nav a{
  display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-1);transition:all .18s ease;
}
.post-nav a:hover{border-color:rgba(14,75,74,.3);box-shadow:var(--shadow-2);transform:translateY(-2px);color:inherit;}
.post-nav .dir{font-size:13px;color:var(--c-text-3);display:block;margin-bottom:8px;}
.post-nav a.next{text-align:right;}
.post-nav .ttl{font-size:15.5px;font-weight:600;color:var(--c-text);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-nav a:hover .ttl{color:var(--c-main);}
.center-btn{text-align:center;margin-top:44px;}

/* --------- Related cards --------- */
.rel-section{padding:0 0 var(--sp-section);}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);transition:all .18s ease;display:flex;flex-direction:column;height:100%;
}
.card:hover{transform:translateY(-3px);border-color:rgba(14,75,74,.3);box-shadow:var(--shadow-2);}
.card-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2);}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-thumb img{transform:scale(1.04);}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body .badge{align-self:flex-start;}
.card-title{font-size:17px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-title a{color:var(--c-text);}
.card-title a:hover{color:var(--c-main);}
.card-desc{font-size:14.5px;color:var(--c-text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--c-text-3);padding-top:12px;border-top:1px solid var(--c-line);}
.card-foot .arrow{color:var(--c-main-light);font-weight:600;}

/* --------- CTA band --------- */
.cta-band{background:var(--c-main-dark);color:#fff;padding:56px 0;}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:32px;}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.75);margin:0;font-size:15px;max-width:60ch;}
.cta-band .btn{flex:0 0 auto;}

/* --------- Footer --------- */
.site-footer{background:var(--c-main-dark);color:rgba(255,255,255,.78);padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px;padding-bottom:44px;}
.site-footer .brand{color:#fff;font-size:18px;margin-bottom:14px;}
.site-footer .brand-mark{background:linear-gradient(135deg,#18A999 0%,#DE6B4A 100%);}
.site-footer .brand-mark::after{background:rgba(9,50,49,.85);}
.footer-brand p{color:rgba(255,255,255,.68);line-height:1.85;font-size:14px;max-width:44ch;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;display:inline-block;transition:all .18s ease;}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px);}
.footer-info p{color:rgba(255,255,255,.68);font-size:13.5px;line-height:1.85;margin-bottom:10px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55);
}

/* --------- Responsive --------- */
@media (max-width:1199px){
  .read-layout{grid-template-columns:1fr;gap:40px;}
  .side{position:static;}
  .side-card{max-width:100%;}
}
@media (max-width:1023px){
  h1,.article-title{font-size:30px;}
  .section{padding:var(--sp-section-md) 0;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-band .inner{flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
}
@media (max-width:899px){
  .main-nav{display:none;}
  .header-cta .btn-sm{display:none;}
  .nav-toggle{display:block;}
  .article-head{padding:32px 0 0;}
  .read-layout{padding:40px 0 var(--sp-section-md);}
}
@media (max-width:639px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  h1,.article-title{font-size:27px;line-height:1.34;}
  h2,.section-title{font-size:22px;}
  h3{font-size:18px;}
  .section{padding:var(--sp-section-sm) 0;}
  .read-body h2{font-size:22px;}
  .read-body h3{font-size:18px;}
  .card-grid{grid-template-columns:1fr;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav a.next{text-align:left;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .btn{width:100%;}
  .header-cta{width:auto;}
  .header-cta .btn{width:auto;}
  .crumb{padding:16px 0;}
  .crumb .cur{white-space:normal;}
  .article-meta{gap:10px;font-size:13px;}
}

/* roulang page: category1 */
:root{
  --brand:#0E4B4A;
  --brand-dark:#093231;
  --brand-light:#16706C;
  --accent:#18A999;
  --cta:#DE6B4A;
  --cta-hover:#C4552F;
  --bg:#FAF8F3;
  --surface:#FFFFFF;
  --surface-2:#F1EEE7;
  --line:#E4E0D6;
  --text:#1E2523;
  --muted:#5A625F;
  --weak:#8A918D;
  --ok:#2F8F5B;
  --warn:#C9891F;
  --danger:#C0453A;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,50,48,.06);
  --sh-2:0 8px 24px -12px rgba(16,50,48,.20);
  --t:180ms ease;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-light);text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:-.01em;color:var(--text);}
h1{font-size:42px;}
h2{font-size:30px;}
h3{font-size:21px;font-weight:600;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-light);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(24,169,153,.25);}

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

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--r-btn);
  font-size:16px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:all var(--t);
}
.btn-primary{
  background:var(--cta);
  color:#fff;
  box-shadow:var(--sh-1);
}
.btn-primary:hover{
  background:var(--cta-hover);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--sh-2);
}
.btn-outline{
  background:transparent;
  color:var(--brand);
  border-color:rgba(14,75,74,.35);
}
.btn-outline:hover{
  background:var(--brand);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--sh-2);
}
.btn-ghost{
  background:rgba(255,255,255,.10);
  color:#fff;
  border-color:rgba(255,255,255,.35);
}
.btn-ghost:hover{background:rgba(255,255,255,.20);color:#fff;transform:translateY(-1px);}
.btn-sm{min-height:42px;padding:0 20px;font-size:15px;}

/* ---------- Badge ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 14px;
  border-radius:var(--r-pill);
  background:rgba(14,75,74,.08);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge-accent{background:rgba(222,107,74,.12);color:var(--cta-hover);}
.badge-onlight{background:rgba(255,255,255,.16);color:#fff;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t),height var(--t);
}
.site-header.is-scrolled{box-shadow:0 6px 18px -12px rgba(16,50,48,.28);}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
}
.site-header.is-scrolled .nav-wrap{min-height:60px;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--brand);
  font-size:19px;
  font-weight:700;
  letter-spacing:-.01em;
  flex-shrink:0;
}
.brand:hover{color:var(--brand);}
.brand-mark{
  width:28px;height:28px;border-radius:9px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-light) 55%,var(--accent) 100%);
  position:relative;
  flex:none;
}
.brand-mark::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:10px;height:10px;
  transform:translate(-50%,-50%);
  border-radius:3px;
  background:rgba(255,255,255,.88);
}
.brand-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  border-radius:var(--r-pill);
  color:var(--text);
  font-size:15px;
  font-weight:500;
  transition:all var(--t);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:50%;bottom:2px;
  width:0;height:2px;
  background:var(--brand);
  border-radius:2px;
  transform:translateX(-50%);
  transition:width var(--t);
}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after{width:24px;}
.main-nav a.is-active{
  background:rgba(14,75,74,.08);
  color:var(--brand);
  font-weight:600;
}
.main-nav a.is-active::after{width:0;}
.header-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  position:relative;
  cursor:pointer;
  padding:0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;height:2px;
  background:var(--brand);
  border-radius:2px;
  transform:translateX(-50%);
  transition:all var(--t);
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{content:"";top:-6px;}
.nav-toggle span::after{content:"";top:6px;}

/* ---------- Breadcrumb ---------- */
.breadcrumb{
  font-size:13.5px;
  color:var(--weak);
  padding:20px 0;
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;list-style:none;}
.breadcrumb a{color:var(--brand-light);}
.breadcrumb .sep{color:var(--weak);}
.breadcrumb .current{color:var(--weak);}

/* ---------- Page hero (category1) ---------- */
.page-hero{
  background:linear-gradient(180deg,rgba(14,75,74,.05) 0%,rgba(250,248,243,0) 78%);
  padding:24px 0 8px;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.hero-copy h1{margin:18px 0 16px;letter-spacing:-.01em;}
.hero-lead{
  font-size:17px;
  color:var(--muted);
  max-width:30em;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;}
.hero-link{
  font-size:15px;
  font-weight:600;
  color:var(--brand-light);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.hero-link:hover{gap:10px;color:var(--accent);}
.hero-points{
  margin-top:30px;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px 22px;
}
.hero-points li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  color:var(--muted);
}
.hero-points li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--accent);
}
.hero-media{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  box-shadow:var(--sh-1);
  border:1px solid var(--line);
  background:var(--surface);
}
.hero-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
}
.hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(14,75,74,.34) 0%,rgba(14,75,74,.12) 100%);
}

/* ---------- Anchor nav ---------- */
.anchor-bar{
  margin-top:44px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.anchor-scroll{
  display:flex;
  gap:4px;
  padding:10px;
  overflow-x:auto;
  scrollbar-width:thin;
}
.anchor-scroll a{
  flex:none;
  padding:9px 18px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  white-space:nowrap;
}
.anchor-scroll a:hover{background:rgba(14,75,74,.07);color:var(--brand);}
.anchor-scroll a.is-current{background:rgba(14,75,74,.10);color:var(--brand);font-weight:600;}

/* ---------- Sections ---------- */
.section{padding:var(--sp-section) 0;}
.section-sm{padding:56px 0;}
.section-alt{background:var(--surface-2);}
.section-head{max-width:720px;margin-bottom:32px;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16.5px;margin:0;}
.section-head .badge{margin-bottom:14px;}

/* ---------- Alternating blocks ---------- */
.alt-block{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.alt-block + .alt-block{margin-top:84px;}
.alt-block.is-reverse .alt-media{order:2;}
.alt-media{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  background:#fff;
}
.alt-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.alt-copy h3{font-size:24px;margin-bottom:16px;}
.alt-copy p{color:var(--muted);font-size:16.5px;}
.step-list{margin-top:22px;display:grid;gap:14px;}
.step-list li{
  display:grid;
  grid-template-columns:28px 1fr;
  gap:12px;
  font-size:15.5px;
  color:var(--muted);
}
.step-list .num{
  width:28px;height:28px;
  border-radius:9px;
  background:rgba(24,169,153,.14);
  color:var(--brand-light);
  font-size:13.5px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-top:3px;
}
.inline-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:22px;
  font-weight:600;
  font-size:15.5px;
  color:var(--brand-light);
}
.inline-link:hover{gap:11px;color:var(--accent);}

/* ---------- Note cards ---------- */
.note-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:40px;
}
.note-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--sh-1);
  transition:all var(--t);
}
.note-card:hover{
  transform:translateY(-3px);
  border-color:rgba(14,75,74,.30);
  box-shadow:var(--sh-2);
}
.note-card i{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;height:42px;
  border-radius:12px;
  background:rgba(14,75,74,.08);
  color:var(--brand);
  font-size:17px;
  margin-bottom:16px;
}
.note-card h3{font-size:18px;margin-bottom:10px;}
.note-card p{font-size:15px;color:var(--muted);margin:0;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;margin-top:8px;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:border-color var(--t),box-shadow var(--t);
  overflow:hidden;
}
.faq-item.open{border-color:rgba(14,75,74,.30);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  background:none;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
}
.faq-q:hover{color:var(--brand);}
.faq-q .icon{
  flex:none;
  width:26px;height:26px;
  border-radius:50%;
  background:rgba(14,75,74,.08);
  color:var(--brand);
  position:relative;
  transition:transform var(--t),background-color var(--t);
}
.faq-q .icon::before,
.faq-q .icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--brand);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .icon::before{width:12px;height:2px;}
.faq-q .icon::after{width:2px;height:12px;transition:opacity var(--t);}
.faq-item.open .faq-q .icon{transform:rotate(180deg);}
.faq-item.open .faq-q .icon::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 260ms ease;
}
.faq-a-inner{
  padding:0 24px 22px;
  font-size:15px;
  color:var(--muted);
  line-height:1.85;
}
.faq-item.open .faq-a{max-height:420px;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--brand-dark);
  color:#fff;
  padding:56px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-inner h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.78);margin:0;font-size:15.5px;max-width:46em;}

/* ---------- Related ---------- */
.related-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  margin-top:32px;
}
.related-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 22px;
  box-shadow:var(--sh-1);
  color:var(--text);
  transition:all var(--t);
}
.related-card:hover{
  transform:translateY(-3px);
  border-color:rgba(14,75,74,.30);
  box-shadow:var(--sh-2);
  color:var(--text);
}
.related-card i{
  color:var(--accent);
  font-size:18px;
  margin-bottom:14px;
}
.related-card h3{font-size:17px;margin-bottom:8px;}
.related-card p{font-size:14.5px;color:var(--muted);margin:0;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--brand-dark);
  color:rgba(255,255,255,.82);
  padding:64px 0 0;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:44px;
}
.footer-brand .brand{color:#fff;font-size:19px;font-weight:700;margin-bottom:16px;}
.footer-brand .brand:hover{color:#fff;}
.footer-brand .brand-mark{background:linear-gradient(140deg,var(--accent) 0%,var(--brand-light) 100%);}
.footer-brand p{color:rgba(255,255,255,.7);line-height:1.85;margin:0;}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{
  color:rgba(255,255,255,.7);
  display:inline-block;
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-info p{color:rgba(255,255,255,.7);margin:0 0 10px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 30px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  color:rgba(255,255,255,.6);
  font-size:13.5px;
}

/* ---------- Mobile drawer ---------- */
.nav-backdrop{
  position:fixed;
  inset:0;
  background:rgba(9,50,49,.45);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--t),visibility var(--t);
  z-index:70;
}
body.nav-open .nav-backdrop{opacity:1;visibility:visible;}
body.nav-open{overflow:hidden;}
.drawer{
  position:fixed;
  top:0;right:0;
  width:min(88vw,360px);
  height:100%;
  background:#fff;
  z-index:80;
  transform:translateX(100%);
  transition:transform 240ms ease;
  display:flex;
  flex-direction:column;
  padding:22px 22px 30px;
  overflow-y:auto;
  box-shadow:-14px 0 40px -20px rgba(9,50,49,.45);
}
body.nav-open .drawer{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:22px;
}
.drawer-close{
  width:40px;height:40px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:var(--r-btn);
  color:var(--brand);
  font-size:19px;
  cursor:pointer;
}
.drawer-nav{display:grid;gap:6px;margin-bottom:24px;}
.drawer-nav a{
  padding:13px 14px;
  border-radius:var(--r-btn);
  color:var(--text);
  font-size:16px;
  font-weight:500;
}
.drawer-nav a:hover{background:rgba(14,75,74,.06);color:var(--brand);}
.drawer-nav a.is-active{background:rgba(14,75,74,.09);color:var(--brand);font-weight:600;}
.drawer-cta{display:grid;gap:12px;}
.drawer-cta .btn{width:100%;}
.drawer-meta{
  margin-top:26px;
  padding-top:20px;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:13.5px;
  line-height:1.9;
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  :root{--sp-section:72px;}
  .main-nav a{padding:8px 10px;font-size:14.5px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:block;}
  .header-cta .btn-sm{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media img{aspect-ratio:16/9;}
  .alt-block{grid-template-columns:1fr;gap:32px;}
  .alt-block.is-reverse .alt-media{order:0;}
  .note-grid{grid-template-columns:1fr 1fr;}
  h1{font-size:34px;}
}
@media (max-width:899px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-inner .btn{width:100%;}
  .hero-points{grid-template-columns:1fr;}
}
@media (max-width:639px){
  :root{--sp-section:56px;}
  .container{padding-left:16px;padding-right:16px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .alt-copy h3{font-size:20px;}
  .hero-lead{font-size:16px;}
  .note-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;padding-bottom:32px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .faq-q{padding:16px 18px;font-size:15.5px;}
  .faq-a-inner{padding:0 18px 18px;}
  .cta-inner h2{font-size:21px;}
  .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .hero-actions{flex-direction:column;align-items:stretch;gap:12px;}
  .hero-link{justify-content:center;}
}

/* roulang page: category2 */
:root{
  --ink:#0E4B4A;
  --ink-deep:#093231;
  --ink-light:#16706C;
  --aqua:#18A999;
  --clay:#DE6B4A;
  --clay-dark:#C4552F;
  --bg:#FAF8F3;
  --surface:#FFFFFF;
  --sub:#F1EEE7;
  --line:#E4E0D6;
  --text:#1E2523;
  --muted:#5A625F;
  --faint:#8A918D;
  --ok:#2F8F5B;
  --warn:#C9891F;
  --danger:#C0453A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,50,48,.06);
  --shadow-2:0 8px 24px -12px rgba(16,50,48,.20);
  --t:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.86;letter-spacing:.01em;
  color:var(--text);background:var(--bg);
}
img{max-width:100%;display:block;border:0}
a{color:var(--ink-light);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--aqua)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--ink-light);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--t)}
.site-header.is-stuck{box-shadow:var(--shadow-1)}
.nav-wrap{display:flex;align-items:center;gap:22px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.brand:hover{color:var(--ink)}
.brand-mark{position:relative;flex:0 0 28px;width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--ink) 0%,var(--ink-light) 100%)}
.brand-mark::after{content:"";position:absolute;inset:8px;border-radius:3px;background:#fff;opacity:.88}
.main-nav{display:flex;align-items:center;gap:3px;margin-left:auto}
.main-nav a{position:relative;padding:8px 14px;border-radius:999px;font-size:15px;color:var(--muted);white-space:nowrap;transition:color var(--t),background-color var(--t)}
.main-nav a::after{content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;border-radius:2px;background:var(--ink-light);transition:left var(--t),right var(--t)}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{left:14px;right:14px}
.main-nav a.is-active{background:rgba(14,75,74,.08);color:var(--ink);font-weight:600}
.header-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;position:relative;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;transition:border-color var(--t)}
.nav-toggle:hover{border-color:var(--ink-light)}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--ink);transform:translateX(-50%);transition:transform var(--t),opacity var(--t)}
.nav-toggle span{top:20px}
.nav-toggle span::before{content:"";top:-6px}
.nav-toggle span::after{content:"";top:6px}
.nav-mask{position:fixed;inset:0;z-index:55;background:rgba(9,50,49,.45);opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t)}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border:1px solid transparent;border-radius:var(--radius-btn);font-size:15px;font-weight:600;cursor:pointer;text-align:center;transition:transform var(--t),box-shadow var(--t),background-color var(--t),color var(--t),border-color var(--t)}
.btn-primary{background:var(--clay);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--clay-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink-light);color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn-block{width:100%}

/* ---------- breadcrumb ---------- */
.crumb{padding:22px 0 0;font-size:13.5px;color:var(--faint)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--ink)}
.crumb .sep{margin:0 8px;color:var(--line)}
.crumb .current{color:var(--faint)}

/* ---------- category hero ---------- */
.cat-hero{
  position:relative;padding:52px 0 0;text-align:center;
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(14,75,74,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(14,75,74,.045) 1px,transparent 1px);
  background-size:28px 28px;
  background-position:center top;
}
.cat-hero .badge{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:rgba(14,75,74,.08);color:var(--ink);font-size:13px;font-weight:600;letter-spacing:.02em}
.cat-hero h1{margin:20px 0 0;font-size:42px;color:var(--ink)}
.hero-lead{margin:16px auto 0;max-width:640px;font-size:17px;color:var(--muted);line-height:1.85}
.num-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:38px 0 0;counter-reset:ns}
.num-strip li{position:relative;padding:20px 20px 20px 22px;background:#fff;border:1px solid var(--line);border-radius:12px;text-align:left;box-shadow:var(--shadow-1);transition:transform var(--t),border-color var(--t),box-shadow var(--t)}
.num-strip li:hover{transform:translateY(-3px);border-color:rgba(14,75,74,.3);box-shadow:var(--shadow-2)}
.num-strip li::before{counter-increment:ns;content:counter(ns,decimal-leading-zero);display:block;font-size:13px;font-weight:700;color:var(--clay);letter-spacing:.08em;margin-bottom:8px}
.num-strip strong{display:block;font-size:16px;font-weight:600;color:var(--text);margin-bottom:4px}
.num-strip span{display:block;font-size:14px;color:var(--muted);line-height:1.7}
.hero-pic{position:relative;margin:42px 0 0;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
.hero-pic img{width:100%;height:320px;object-fit:cover}
.hero-pic::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,75,74,.18),rgba(9,50,49,.18))}
.hero-pic figcaption{position:absolute;left:0;bottom:0;z-index:2;padding:14px 22px;font-size:13.5px;color:rgba(255,255,255,.9);background:rgba(9,50,49,.35)}

/* ---------- anchor nav ---------- */
.anchor-nav{display:flex;gap:10px;overflow-x:auto;padding:16px 0;margin-top:34px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);scrollbar-width:none}
.anchor-nav::-webkit-scrollbar{display:none}
.anchor-nav a{flex:0 0 auto;padding:8px 16px;border-radius:999px;background:var(--sub);color:var(--muted);font-size:14px;white-space:nowrap;transition:background-color var(--t),color var(--t)}
.anchor-nav a:hover{background:rgba(14,75,74,.1);color:var(--ink)}

/* ---------- sections ---------- */
.section{padding-top:88px}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{position:relative;padding-left:18px;font-size:30px;color:var(--text)}
.section-head h2::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:2px;background:var(--ink)}
.section-head p{margin-top:12px;font-size:16px;color:var(--muted);line-height:1.85}

/* ---------- cards ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{overflow:hidden;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.card:hover{transform:translateY(-3px);border-color:rgba(14,75,74,.3);box-shadow:var(--shadow-2)}
.card-body{padding:24px}
.card-body h3{font-size:19px;color:var(--text);margin-bottom:10px}
.card-body p{margin:0;font-size:15.5px;color:var(--muted);line-height:1.85}
.card-media{aspect-ratio:16/9;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease}
.card:hover .card-media img{transform:scale(1.03)}
.idx{display:inline-block;margin-bottom:8px;font-size:13px;font-weight:700;color:var(--clay);letter-spacing:.08em}

/* ---------- steps ---------- */
.steps{display:grid;gap:14px;counter-reset:st}
.step{position:relative;padding:22px 26px 22px 76px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:border-color var(--t),transform var(--t)}
.step:hover{border-color:rgba(14,75,74,.3);transform:translateY(-2px)}
.step::before{counter-increment:st;content:counter(st,decimal-leading-zero);position:absolute;left:24px;top:22px;font-size:15px;font-weight:700;color:var(--clay);font-variant-numeric:tabular-nums}
.step h3{font-size:17px;color:var(--text);margin-bottom:6px}
.step p{margin:0;font-size:15.5px;color:var(--muted);line-height:1.85}

/* ---------- check list ---------- */
.check-list{display:grid;gap:12px}
.check-list li{position:relative;padding:16px 22px 16px 50px;background:#fff;border:1px solid var(--line);border-radius:12px;font-size:15.5px;color:var(--muted);line-height:1.8;box-shadow:var(--shadow-1);transition:border-color var(--t),transform var(--t)}
.check-list li:hover{border-color:rgba(14,75,74,.3);transform:translateY(-2px)}
.check-list li::before{content:"";position:absolute;left:20px;top:23px;width:9px;height:9px;border-radius:2px;background:var(--ink)}
.check-list strong{display:block;margin-bottom:2px;font-size:16px;font-weight:600;color:var(--text)}

/* ---------- faq ---------- */
.faq{display:grid;gap:12px;max-width:900px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:border-color var(--t)}
.faq details[open]{border-color:rgba(14,75,74,.3)}
.faq summary{position:relative;padding:18px 58px 18px 24px;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);font-size:20px;font-weight:400;color:var(--ink-light);transition:transform var(--t)}
.faq details[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.faq .faq-body{padding:0 24px 20px;font-size:15px;color:var(--muted);line-height:1.85}

/* ---------- cta ---------- */
.cta-band{margin-top:88px;background:var(--ink);color:#fff}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding-top:48px;padding-bottom:48px}
.cta-inner h2{font-size:26px;color:#fff}
.cta-inner p{margin-top:10px;font-size:15.5px;color:rgba(255,255,255,.74);line-height:1.8}

/* ---------- related ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.rel-card{display:block;padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:transform var(--t),border-color var(--t),box-shadow var(--t)}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(14,75,74,.3);box-shadow:var(--shadow-2)}
.rel-card h3{font-size:17px;color:var(--text);margin-bottom:8px}
.rel-card p{margin:0 0 14px;font-size:14.5px;color:var(--muted);line-height:1.8}
.rel-card .more{font-size:14px;font-weight:600;color:var(--ink-light)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.78);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:40px}
.footer-brand .brand{color:#fff}
.footer-brand .brand:hover{color:#fff}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--aqua) 0%,var(--ink) 100%)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.66)}
.footer-col h4{margin-bottom:14px;font-size:15px;font-weight:600;color:#fff}
.footer-col ul{display:grid;gap:10px}
.footer-col a{display:inline-block;font-size:14px;color:rgba(255,255,255,.72);transition:color var(--t),transform var(--t)}
.footer-col a:hover{color:var(--aqua);transform:translateX(2px)}
.footer-info p{margin-bottom:10px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);font-size:13.5px;color:rgba(255,255,255,.6)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .section{padding-top:72px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:899px){
  .container{padding:0 20px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;z-index:60;
    width:min(320px,86vw);
    flex-direction:column;align-items:stretch;gap:6px;margin-left:0;
    padding:88px 20px 28px;background:#fff;box-shadow:var(--shadow-2);
    transform:translateX(105%);transition:transform 260ms ease;
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav a{padding:14px 16px;border-radius:12px;font-size:16px}
  .main-nav a::after{display:none}
  .cat-hero{padding-top:40px}
  .cat-hero h1{font-size:32px}
  .hero-lead{font-size:16px}
  .num-strip{grid-template-columns:repeat(2,1fr)}
  .grid-2{grid-template-columns:1fr}
  .section-head h2{font-size:24px}
  .hero-pic img{height:240px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;padding-top:40px;padding-bottom:40px}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .cat-hero h1{font-size:28px}
  .num-strip{grid-template-columns:1fr}
  .step{padding:20px 20px 20px 58px}
  .step::before{left:18px}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding-top:56px}
  .hero-pic img{height:200px}
}

/* roulang page: category3 */
:root{
  --ink:#0E4B4A;
  --ink-deep:#093231;
  --ink-mid:#16706C;
  --aqua:#18A999;
  --clay:#DE6B4A;
  --clay-dark:#C4552F;
  --bg:#FAF8F3;
  --card:#FFFFFF;
  --sub:#F1EEE7;
  --line:#E4E0D6;
  --text:#1E2523;
  --muted:#5A625F;
  --faint:#8A918D;
  --ok:#2F8F5B;
  --warn:#C9891F;
  --alert:#C0453A;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,50,48,.06);
  --sh-2:0 8px 24px -12px rgba(16,50,48,.20);
  --gap-sec:88px;
  --container:1200px;
  --t:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.88;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--ink-mid);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--clay);}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--ink);line-height:1.35;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:6px;}

/* ---------- container ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-weight:600;
  font-size:16px;
  cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background-color var(--t),color var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--clay);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--clay-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(14,75,74,.28);}
.btn-ghost:hover{background:rgba(14,75,74,.06);color:var(--ink);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-light{background:#fff;color:var(--ink-deep);}
.btn-light:hover{background:#F4F1E9;color:var(--ink-deep);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-sm{min-height:42px;padding:0 20px;font-size:15px;}

/* ---------- badge / tag ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 14px;
  border-radius:999px;
  background:rgba(14,75,74,.08);
  color:var(--ink);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge-accent{background:rgba(222,107,74,.12);color:var(--clay-dark);}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-stuck{box-shadow:0 6px 18px -14px rgba(16,50,48,.45);}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
  transition:min-height var(--t);
}
.site-header.is-stuck .nav-wrap{min-height:60px;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  font-weight:700;
  font-size:19px;
  letter-spacing:-.01em;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:28px;height:28px;
  border-radius:8px;
  background:linear-gradient(135deg,var(--ink) 0%,var(--ink-mid) 100%);
  position:relative;
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:8px;
  border:2px solid rgba(255,255,255,.85);
  border-radius:3px;
}
.brand-text{white-space:nowrap;}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.main-nav a{
  position:relative;
  padding:9px 14px;
  border-radius:999px;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  transition:color var(--t),background-color var(--t);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:50%;right:50%;
  bottom:4px;
  height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:left var(--t),right var(--t);
}
.main-nav a:hover{color:var(--ink);background:rgba(14,75,74,.05);}
.main-nav a:hover::after{left:16px;right:16px;}
.main-nav a.is-active{color:var(--ink);background:rgba(14,75,74,.08);font-weight:600;}
.main-nav a.is-active::after{left:16px;right:16px;}
.header-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:20px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transform:translateX(-50%);
  transition:transform var(--t),opacity var(--t),top var(--t);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-mask{
  position:fixed;
  inset:0;
  background:rgba(9,50,49,.42);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--t),visibility var(--t);
  z-index:70;
}
.nav-mask.is-open{opacity:1;visibility:visible;}
body.nav-locked{overflow:hidden;}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:20px 0;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--faint);
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--ink);}
.crumb .sep{color:#C7C2B6;}
.crumb .current{color:var(--faint);}

/* ---------- page hero ---------- */
.page-hero{
  padding:12px 0 0;
  background:
    radial-gradient(900px 420px at 88% -10%, rgba(24,169,153,.10) 0%, rgba(24,169,153,0) 70%),
    var(--bg);
}
.hero-split{
  display:grid;
  grid-template-columns:minmax(0,1.04fr) minmax(0,1fr);
  gap:48px;
  align-items:start;
  padding-bottom:8px;
}
.hero-copy .badge{margin-bottom:18px;}
.hero-h1{
  font-size:42px;
  line-height:1.22;
  margin-bottom:16px;
  max-width:16em;
}
.hero-lead{
  font-size:17px;
  color:var(--muted);
  max-width:32em;
  margin-bottom:26px;
}
.hero-points{
  display:grid;
  gap:10px;
  margin-bottom:30px;
}
.hero-points li{
  position:relative;
  padding-left:20px;
  font-size:15.5px;
  color:var(--muted);
}
.hero-points li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:8px;
  background:var(--ink);
  border-radius:2px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;}

.hero-media img{
  width:100%;
  height:196px;
  object-fit:cover;
  border-radius:var(--r-img);
  box-shadow:var(--sh-1);
}
.timeline{
  margin-top:18px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:24px 24px 8px;
}
.timeline-title{
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:18px;
  display:flex;
  align-items:center;
  gap:10px;
}
.timeline-title::before{
  content:"";
  width:3px;height:16px;
  background:var(--ink);
  border-radius:2px;
}
.tl-item{
  position:relative;
  padding:0 0 20px 26px;
  border-left:1px solid var(--line);
  margin-left:5px;
}
.tl-item:last-child{border-left-color:transparent;padding-bottom:14px;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-6px;top:6px;
  width:11px;height:11px;
  border-radius:50%;
  background:#fff;
  border:2px solid var(--ink-mid);
}
.tl-item strong{
  display:block;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:2px;
}
.tl-item span{
  display:block;
  font-size:14px;
  color:var(--muted);
  line-height:1.7;
}

/* ---------- anchor nav ---------- */
.anchor-bar{
  position:sticky;
  top:60px;
  z-index:40;
  margin-top:32px;
  background:rgba(250,248,243,.94);
  backdrop-filter:blur(6px);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.anchor-inner{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  padding:12px 0;
  scrollbar-width:thin;
}
.anchor-inner a{
  flex:0 0 auto;
  padding:8px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--muted);
  font-size:14px;
  font-weight:500;
  transition:color var(--t),border-color var(--t),background-color var(--t);
}
.anchor-inner a:hover{color:var(--ink);border-color:rgba(14,75,74,.3);}
.anchor-inner a.is-current{background:rgba(14,75,74,.08);color:var(--ink);border-color:rgba(14,75,74,.28);font-weight:600;}

/* ---------- section ---------- */
.section{padding:var(--gap-sec) 0 0;}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:32px;
}
.sec-kicker{
  display:block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--aqua);
  margin-bottom:10px;
}
.sec-title{
  font-size:30px;
  line-height:1.3;
  display:flex;
  align-items:center;
  gap:12px;
}
.sec-title::before{
  content:"";
  width:10px;height:10px;
  background:var(--ink);
  border-radius:3px;
  flex:0 0 auto;
}
.sec-desc{
  max-width:52em;
  color:var(--muted);
  font-size:16px;
  margin-top:14px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-mid);
}
.text-link:hover{color:var(--clay);}
.text-link::after{content:"→";transition:transform var(--t);}
.text-link:hover::after{transform:translateX(3px);}

/* ---------- steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.step-item{
  position:relative;
  padding:30px 24px 32px;
  border-right:1px solid var(--line);
  transition:background-color var(--t),transform var(--t);
}
.step-item:last-child{border-right:none;}
.step-item:hover{background:rgba(24,169,153,.05);}
.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:11px;
  background:rgba(14,75,74,.08);
  color:var(--ink);
  font-weight:700;
  font-size:16px;
  margin-bottom:16px;
}
.step-item h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:10px;
}
.step-item p{
  font-size:15px;
  color:var(--muted);
  line-height:1.8;
}
.step-item .step-meta{
  display:inline-block;
  margin-top:14px;
  font-size:13px;
  color:var(--faint);
}

/* ---------- wide cards ---------- */
.wide-list{display:grid;gap:16px;}
.wide-card{
  display:grid;
  grid-template-columns:64px minmax(0,1fr);
  gap:22px;
  align-items:start;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:26px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.wide-card:hover{
  transform:translateY(-3px);
  border-color:rgba(14,75,74,.3);
  box-shadow:var(--sh-2);
}
.wide-icon{
  width:64px;height:64px;
  border-radius:14px;
  background:rgba(24,169,153,.12);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--ink);
  font-weight:700;
  font-size:20px;
}
.wide-body h3{
  font-size:21px;
  font-weight:600;
  margin-bottom:10px;
}
.wide-body p{
  color:var(--muted);
  font-size:15.5px;
  line-height:1.85;
  margin-bottom:12px;
}
.wide-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px;}
.wide-tags span{
  font-size:13px;
  color:var(--muted);
  background:var(--sub);
  border-radius:999px;
  padding:4px 12px;
}

/* ---------- notices ---------- */
.notice-grid{display:grid;gap:14px;}
.notice{
  border-radius:var(--r-card);
  border:1px solid var(--line);
  border-left-width:4px;
  background:var(--card);
  padding:20px 22px;
  box-shadow:var(--sh-1);
}
.notice h4{
  font-size:16px;
  font-weight:600;
  margin-bottom:8px;
}
.notice p{font-size:15px;color:var(--muted);line-height:1.82;}
.notice-info{border-left-color:var(--ink-mid);background:rgba(24,169,153,.06);}
.notice-info h4{color:var(--ink);}
.notice-warn{border-left-color:var(--warn);background:rgba(201,137,31,.07);}
.notice-warn h4{color:#8E6113;}
.notice-alert{border-left-color:var(--alert);background:rgba(192,69,58,.06);}
.notice-alert h4{color:#9A352C;}

/* ---------- handle flow ---------- */
.flow{
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);
  gap:32px;
  align-items:start;
}
.flow-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px;
}
.flow-card h3{font-size:21px;font-weight:600;margin-bottom:16px;}
.check-list{display:grid;gap:12px;}
.check-list li{
  position:relative;
  padding-left:30px;
  font-size:15.5px;
  color:var(--muted);
  line-height:1.8;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:8px;
  width:16px;height:16px;
  border-radius:5px;
  background:rgba(14,75,74,.1);
  box-shadow:inset 0 0 0 1px rgba(14,75,74,.25);
}
.check-list li::after{
  content:"";
  position:absolute;
  left:5px;top:13px;
  width:6px;height:3px;
  border-left:2px solid var(--ink-mid);
  border-bottom:2px solid var(--ink-mid);
  transform:rotate(-45deg);
}
.flow-aside{
  background:var(--sub);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
}
.flow-aside h4{font-size:16px;font-weight:600;margin-bottom:14px;}
.flow-aside p{font-size:15px;color:var(--muted);line-height:1.85;margin-bottom:14px;}
.flow-aside img{
  width:100%;
  height:170px;
  object-fit:cover;
  border-radius:var(--r-img);
  margin-top:6px;
}

/* ---------- CTA band ---------- */
.cta-band{
  margin-top:var(--gap-sec);
  background:var(--ink-deep);
  color:rgba(255,255,255,.9);
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:44px 0;
}
.cta-inner h2{
  color:#fff;
  font-size:26px;
  margin-bottom:8px;
}
.cta-inner p{
  font-size:15px;
  color:rgba(255,255,255,.72);
  max-width:44em;
}

/* ---------- related ---------- */
.rel-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:22px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.rel-card:hover{
  transform:translateY(-3px);
  border-color:rgba(14,75,74,.3);
  box-shadow:var(--sh-2);
  color:var(--ink-mid);
}
.rel-card .badge{align-self:flex-start;}
.rel-card strong{
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  display:block;
}
.rel-card:hover strong{color:var(--ink-mid);}
.rel-card span{
  font-size:14px;
  color:var(--muted);
  line-height:1.75;
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:var(--gap-sec);
  background:var(--ink-deep);
  color:rgba(255,255,255,.78);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:44px;
}
.footer-brand .brand{color:#fff;font-size:19px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,#18A999 0%,#0E4B4A 100%);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);max-width:30em;}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{
  color:rgba(255,255,255,.72);
  font-size:14px;
  display:inline-block;
  transition:color var(--t),transform var(--t);
}
.footer-col a:hover{color:var(--aqua);transform:translateX(2px);}
.footer-info p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);margin-bottom:10px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13.5px;
  color:rgba(255,255,255,.6);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--gap-sec:72px;}
  .hero-h1{font-size:36px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
  .footer-info{grid-column:1 / -1;}
}
@media (max-width:1023px){
  .hero-split{grid-template-columns:minmax(0,1fr);gap:32px;}
  .hero-media img{height:220px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step-item:nth-child(2){border-right:none;}
  .step-item:nth-child(1),
  .step-item:nth-child(2){border-bottom:1px solid var(--line);}
  .flow{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:899px){
  :root{--gap-sec:56px;}
  .container{padding:0 20px;}
  .nav-toggle{display:block;}
  .header-cta .btn{display:none;}
  .main-nav{
    position:fixed;
    top:0;right:0;
    width:min(330px,86vw);
    height:100vh;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:88px 22px 28px;
    margin-left:0;
    transform:translateX(102%);
    transition:transform 240ms ease;
    box-shadow:-14px 0 40px -24px rgba(9,50,49,.55);
    z-index:80;
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .main-nav a{
    padding:14px 16px;
    border-radius:12px;
    font-size:16px;
  }
  .main-nav a::after{display:none;}
  .main-nav a.is-active{background:rgba(14,75,74,.08);}
  .anchor-bar{top:60px;}
  .sec-title{font-size:24px;}
  .hero-h1{font-size:30px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 0;}
  .cta-inner .btn{width:100%;}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-info{grid-column:1 / -1;}
}
@media (max-width:639px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .hero-h1{font-size:28px;}
  .hero-lead{font-size:16px;}
  .hero-cta .btn{width:100%;}
  .steps{grid-template-columns:minmax(0,1fr);}
  .step-item{border-right:none;border-bottom:1px solid var(--line);padding:24px 20px;}
  .step-item:last-child{border-bottom:none;}
  .step-item:nth-child(2){border-bottom:1px solid var(--line);}
  .wide-card{grid-template-columns:minmax(0,1fr);gap:16px;padding:22px;}
  .wide-icon{width:52px;height:52px;font-size:18px;}
  .sec-title{font-size:22px;}
  .cta-inner h2{font-size:21px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category4 */
:root{
  --c-primary:#0E4B4A;
  --c-primary-dark:#093231;
  --c-primary-light:#16706C;
  --c-accent:#18A999;
  --c-warm:#DE6B4A;
  --c-warm-hover:#C4552F;
  --c-bg:#FAF8F3;
  --c-surface:#FFFFFF;
  --c-sub:#F1EEE7;
  --c-line:#E4E0D6;
  --c-text:#1E2523;
  --c-text-2:#5A625F;
  --c-text-3:#8A918D;
  --c-success:#2F8F5B;
  --c-warn:#C9891F;
  --c-danger:#C0453A;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,50,48,.06);
  --sh-2:0 8px 24px -12px rgba(16,50,48,.20);
  --sp-section:88px;
  --container:1200px;
  --tr:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.88;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary-light);text-decoration:none;transition:color var(--tr),background var(--tr),border-color var(--tr),transform var(--tr),box-shadow var(--tr);}
a:hover{color:var(--c-accent);}
p{margin:0 0 1.2em;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:-.01em;color:var(--c-text);}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary-light);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--sp-section) 0;}
.section-tight{padding:56px 0;}
.section-head{margin-bottom:32px;}
.section-head .eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--c-accent);letter-spacing:.08em;margin-bottom:10px;}
.section-head h2{font-size:30px;}
.section-head p{margin:12px 0 0;color:var(--c-text-2);font-size:16px;max-width:760px;}
.rule-title{position:relative;padding-left:16px;}
.rule-title::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:2px;background:var(--c-primary);}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);background:rgba(14,75,74,.08);color:var(--c-primary);font-size:12.5px;font-weight:600;line-height:1.6;}
.badge-accent{background:rgba(222,107,74,.12);color:var(--c-warm-hover);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);border:1px solid transparent;font-size:16px;font-weight:600;cursor:pointer;transition:all var(--tr);white-space:nowrap;}
.btn-primary{background:var(--c-warm);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-warm-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:rgba(14,75,74,.32);}
.btn-ghost:hover{background:rgba(14,75,74,.07);color:var(--c-primary);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--c-primary-dark);}
.btn-light:hover{color:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px;}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary-light);}
.btn-link::after{content:"→";transition:transform var(--tr);}
.btn-link:hover{color:var(--c-warm);}
.btn-link:hover::after{transform:translateX(3px);}

/* Header */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--c-line);transition:box-shadow var(--tr),height var(--tr);}
.site-header.is-stuck{box-shadow:0 6px 20px -14px rgba(16,50,48,.35);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-primary);font-size:19px;font-weight:700;letter-spacing:0;}
.brand:hover{color:var(--c-primary);}
.brand-mark{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-primary-light) 60%,var(--c-accent) 100%);position:relative;flex:0 0 28px;}
.brand-mark::after{content:"";position:absolute;inset:9px 9px auto 9px;height:3px;border-radius:2px;background:rgba(255,255,255,.85);box-shadow:0 6px 0 rgba(255,255,255,.55);}
.brand-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{position:relative;display:inline-block;padding:10px 14px;border-radius:var(--r-pill);font-size:15.5px;color:var(--c-text-2);font-weight:500;}
.main-nav a::after{content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;background:var(--c-primary);border-radius:2px;transition:left var(--tr),right var(--tr);}
.main-nav a:hover{color:var(--c-primary);}
.main-nav a:hover::after{left:14px;right:14px;}
.main-nav a.is-active{background:rgba(14,75,74,.08);color:var(--c-primary);font-weight:600;}
.main-nav a.is-active::after{left:14px;right:14px;opacity:0;}
.header-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--c-line);border-radius:10px;background:#fff;position:relative;cursor:pointer;}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:50%;width:18px;height:2px;background:var(--c-primary);border-radius:2px;transform:translateX(-50%);transition:all var(--tr);}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";left:0;top:-6px;transform:none;}
.nav-toggle span::after{content:"";left:0;top:6px;transform:none;}
.nav-overlay{position:fixed;inset:0;background:rgba(9,50,49,.45);opacity:0;visibility:hidden;transition:opacity var(--tr),visibility var(--tr);z-index:70;}
body.nav-open .nav-overlay{opacity:1;visibility:visible;}
body.nav-open{overflow:hidden;}

/* Breadcrumb */
.crumb-bar{background:#fff;border-bottom:1px solid var(--c-line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-text-3);padding:20px 0;}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-primary-light);}
.crumb .sep{color:#C9C5BA;}
.crumb .current{color:var(--c-text-2);}

/* Hero */
.cat-hero{position:relative;background:linear-gradient(180deg,#FBFAF6 0%,var(--c-bg) 100%);border-bottom:1px solid var(--c-line);overflow:hidden;}
.cat-hero::before{content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(24,169,153,.14) 0%,rgba(24,169,153,0) 68%);}
.cat-hero .inner{position:relative;padding:64px 0 56px;}
.cat-hero h1{font-size:42px;max-width:900px;}
.cat-hero .lead{margin:18px 0 0;font-size:17px;color:var(--c-text-2);max-width:720px;}
.metric-bar{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:26px 28px;}
.metric{position:relative;padding-left:20px;}
.metric+.metric{border-left:1px solid var(--c-line);}
.metric::before{content:"";position:absolute;left:0;top:.35em;width:8px;height:8px;border-radius:2px;background:var(--c-accent);}
.metric .num{font-size:32px;font-weight:700;color:var(--c-primary);line-height:1.2;font-family:Inter,system-ui,-apple-system,"PingFang SC",sans-serif;}
.metric .num small{font-size:15px;font-weight:600;margin-left:4px;color:var(--c-primary-light);}
.metric .lab{margin-top:4px;font-size:14px;color:var(--c-text-2);}

/* Anchor nav */
.anchor-nav{background:#fff;border-bottom:1px solid var(--c-line);position:sticky;top:72px;z-index:40;}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:thin;}
.anchor-scroll a{flex:0 0 auto;padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--c-line);background:var(--c-surface);font-size:14.5px;color:var(--c-text-2);font-weight:500;}
.anchor-scroll a:hover{border-color:rgba(14,75,74,.35);color:var(--c-primary);background:rgba(14,75,74,.05);}

/* Cards */
.card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:all var(--tr);overflow:hidden;}
.card:hover{transform:translateY(-3px);border-color:rgba(14,75,74,.3);box-shadow:var(--sh-2);}
.card-body{padding:24px;}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{color:var(--c-text-2);font-size:15.5px;margin-bottom:14px;}
.card-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-sub);}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease;}
.card:hover .card-thumb img{transform:scale(1.03);}

.card-mix{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;}
.card-mix .stack{display:grid;gap:24px;align-content:start;}
.card-feature{display:flex;flex-direction:column;}
.card-feature .card-thumb{aspect-ratio:16/10;}
.card-feature .card-body{padding:26px 26px 28px;}
.card-feature h3{font-size:22px;}
.list-check{margin:0 0 18px;}
.list-check li{position:relative;padding-left:22px;font-size:15.5px;color:var(--c-text-2);margin-bottom:10px;line-height:1.75;}
.list-check li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;background:var(--c-primary);}
.list-check li:last-child{margin-bottom:0;}

/* Flow steps */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.flow-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px 22px;box-shadow:var(--sh-1);transition:all var(--tr);}
.flow-item:hover{transform:translateY(-3px);border-color:rgba(14,75,74,.3);box-shadow:var(--sh-2);}
.flow-num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:rgba(14,75,74,.08);color:var(--c-primary);font-weight:700;font-size:15px;margin-bottom:14px;font-family:Inter,system-ui,sans-serif;}
.flow-item h3{font-size:17px;margin-bottom:8px;}
.flow-item p{font-size:15px;color:var(--c-text-2);margin:0;}

/* Panel */
.panel{background:var(--c-sub);border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;}
.panel h3{font-size:19px;margin-bottom:12px;}
.panel p{color:var(--c-text-2);font-size:15.5px;}
.panel p:last-child{margin-bottom:0;}
.split{display:grid;grid-template-columns:1fr 1fr;gap:24px;}

/* FAQ */
.faq-list{display:grid;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:border-color var(--tr),box-shadow var(--tr);}
.faq-item.is-open{border-color:rgba(14,75,74,.3);box-shadow:var(--sh-2);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 24px;background:none;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--c-text);cursor:pointer;}
.faq-q .ico{flex:0 0 22px;position:relative;width:22px;height:22px;}
.faq-q .ico::before,.faq-q .ico::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;transition:transform var(--tr),opacity var(--tr);}
.faq-q .ico::before{width:14px;height:2px;transform:translate(-50%,-50%);}
.faq-q .ico::after{width:2px;height:14px;transform:translate(-50%,-50%);}
.faq-item.is-open .faq-q .ico::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms ease;}
.faq-a .inner{padding:0 24px 22px;font-size:15px;color:var(--c-text-2);line-height:1.85;}

/* CTA band */
.cta-band{background:var(--c-primary-dark);color:#fff;}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:52px 0;}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15.5px;margin:0;max-width:640px;}

/* Related */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{display:block;color:inherit;}
.rel-card .meta{display:flex;align-items:center;justify-content:space-between;padding:0 24px 22px;font-size:14px;color:var(--c-text-3);}
.rel-card .meta .go{color:var(--c-primary-light);font-weight:600;}

/* Footer */
.site-footer{background:var(--c-primary-dark);color:rgba(255,255,255,.78);font-size:14px;padding:64px 0 0;margin-top:0;}
.site-footer .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.site-footer .brand{color:#fff;font-size:18px;font-weight:700;}
.site-footer .brand:hover{color:var(--c-accent);}
.site-footer .brand-mark{background:linear-gradient(135deg,#18A999 0%,#16706C 70%);}
.site-footer .footer-brand p{margin:16px 0 0;line-height:1.85;color:rgba(255,255,255,.66);}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.site-footer ul li{margin-bottom:10px;}
.site-footer ul a{color:rgba(255,255,255,.72);}
.site-footer ul a:hover{color:var(--c-accent);transform:translateX(2px);display:inline-block;}
.site-footer .footer-info p{color:rgba(255,255,255,.62);margin-bottom:10px;}
.footer-bottom{margin-top:44px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.55);}

@media (max-width:1199px){
  :root{--sp-section:72px;}
  .container{padding:0 20px;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .card-mix{grid-template-columns:1fr;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;}
  .site-footer .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:899px){
  .main-nav{position:fixed;top:0;right:0;width:min(320px,86vw);height:100vh;background:#fff;flex-direction:column;align-items:stretch;gap:4px;padding:88px 20px 32px;transform:translateX(102%);transition:transform 240ms ease;z-index:80;box-shadow:-16px 0 40px -24px rgba(16,50,48,.4);overflow-y:auto;}
  .main-nav a{padding:14px 16px;border-radius:12px;font-size:16px;border-bottom:1px solid var(--c-line);}
  .main-nav a::after{display:none;}
  .main-nav a.is-active{background:rgba(14,75,74,.08);}
  body.nav-open .main-nav{transform:translateX(0);}
  .nav-toggle{display:block;z-index:90;}
  body.nav-open .nav-toggle span{background:transparent;}
  body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg);}
  body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg);}
  .header-cta .btn-sm{display:none;}
  .cat-hero .inner{padding:48px 0 44px;}
  .metric-bar{grid-template-columns:1fr;gap:18px;padding:22px;}
  .metric+.metric{border-left:0;border-top:1px solid var(--c-line);padding-top:18px;}
  .anchor-nav{top:60px;}
}
@media (max-width:767px){
  :root{--sp-section:56px;}
  .container{padding:0 16px;}
  .nav-wrap{height:60px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero .lead{font-size:16px;}
  .section-head h2{font-size:22px;}
  .cta-band .inner{flex-direction:column;align-items:flex-start;gap:20px;padding:40px 0;}
  .cta-band .btn{width:100%;}
  .rel-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .site-footer .footer-grid{grid-template-columns:1fr;gap:26px;}
  .site-footer{padding-top:48px;}
  .faq-q{padding:16px 18px;font-size:15.5px;}
  .faq-a .inner{padding:0 18px 18px;}
}