/* roulang page: index */
:root{
  --ink:#0F1D19;
  --jade:#2F8F7B;
  --accent:#E4693B;
  --paper:#F7F5F0;
  --paper2:#ECE8E0;
  --line:#DCD6CB;
  --muted:#5C6A66;
  --on-dark:#EDEAE3;
  --r-card:10px;
  --r-btn:4px;
  --r-img:6px;
  --sh-1:0 1px 2px rgba(15,29,25,.05);
  --sh-2:0 12px 32px rgba(15,29,25,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-primary:#2F8F7B;
  --bs-body-color:#0F1D19;
  --bs-body-bg:#F7F5F0;
  --bs-border-radius:6px;
  --bs-link-color:#2F8F7B;
  --bs-link-hover-color:#0F1D19;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-font-sans-serif-fallback:"PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink);background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--jade);text-decoration:none;transition:color .24s var(--ease);}
a:hover{color:var(--ink);}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;font-weight:700;letter-spacing:-.01em;}
.rl-num,.rl-stat b,time{font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;font-variant-numeric:tabular-nums;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(228,105,59,.22);}

.rl-container{width:100%;max-width:1200px;margin:0 auto;padding-left:40px;padding-right:40px;}
@media (min-width:1400px){.rl-container{max-width:1240px;}}
@media (max-width:991px){.rl-container{padding-left:28px;padding-right:28px;}}
@media (max-width:575px){.rl-container{padding-left:20px;padding-right:20px;}}

.rl-section{padding:112px 0;}
@media (max-width:991px){.rl-section{padding:80px 0;}}
@media (max-width:767px){.rl-section{padding:56px 0;}}

/* ---------- Header ---------- */
.rl-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,245,240,.94);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),background-color .24s var(--ease);
}
.rl-header.is-scrolled{border-bottom-color:var(--line);}
.rl-nav{display:flex;align-items:center;justify-content:space-between;gap:32px;height:72px;transition:height .24s var(--ease);}
.rl-header.is-scrolled .rl-nav{height:60px;}
.rl-logo{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  font-size:22px;font-weight:700;letter-spacing:-.01em;color:var(--ink);
  display:inline-flex;align-items:center;gap:10px;white-space:nowrap;
}
.rl-logo::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--accent);display:block;transform:translateY(-1px);}
.rl-logo:hover{color:var(--ink);}
.rl-menu{display:flex;align-items:center;gap:34px;}
.rl-menu a{position:relative;display:inline-block;font-size:15px;color:var(--ink);padding:6px 0;}
.rl-menu a::after{
  content:"";position:absolute;left:0;bottom:-6px;width:100%;height:1px;
  background:var(--jade);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.rl-menu a:hover{color:var(--ink);}
.rl-menu a:hover::after{transform:scaleX(1);}
.rl-menu a.is-active::after{background:var(--accent);height:2px;transform:scaleX(1);}
.rl-nav-actions{display:flex;align-items:center;gap:14px;}
.rl-burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:transparent;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
  transition:border-color .24s var(--ease);
}
.rl-burger span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform .24s var(--ease),opacity .24s var(--ease);}
.rl-burger:hover{border-color:var(--ink);}
@media (max-width:991px){
  .rl-burger{display:flex;}
  .rl-menu{
    position:fixed;left:0;right:0;top:72px;bottom:0;
    flex-direction:column;align-items:flex-start;gap:0;
    background:var(--paper);padding:8px 28px 48px;
    border-top:1px solid var(--line);
    transform:translateY(-10px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s;
    overflow-y:auto;
  }
  .rl-menu.is-open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto;}
  .rl-menu li{width:100%;border-bottom:1px solid var(--line);}
  .rl-menu a{display:block;padding:18px 0;font-size:18px;}
  .rl-menu a::after{display:none;}
  .rl-nav-actions .rl-btn-ghost{display:none;}
}

/* ---------- Buttons ---------- */
.rl-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;height:48px;padding:0 28px;
  border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15.5px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.rl-btn-accent{background:var(--accent);color:#fff;}
.rl-btn-accent:hover{background:#cf5a30;color:#fff;}
.rl-btn-ink{background:var(--ink);color:var(--paper);}
.rl-btn-ink:hover{background:#1b2f29;color:var(--paper);}
.rl-btn-ghost{border-color:rgba(15,29,25,.22);color:var(--ink);background:transparent;}
.rl-btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.rl-btn-ghost-light{border-color:rgba(237,234,227,.3);color:var(--on-dark);background:transparent;}
.rl-btn-ghost-light:hover{background:var(--on-dark);color:var(--ink);border-color:var(--on-dark);}
.rl-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.rl-arrow{display:inline-block;transition:transform .22s var(--ease);}
.rl-btn:hover .rl-arrow,.rl-textlink:hover .rl-arrow{transform:translateX(4px);}
.rl-textlink{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--jade);}
.rl-textlink:hover{color:var(--ink);}

/* ---------- Hero ---------- */
.rl-hero{position:relative;overflow:hidden;background:var(--ink);color:var(--on-dark);}
.rl-hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;}
.rl-hero-bg::after{content:"";position:absolute;inset:0;background:rgba(15,29,25,.79);}
.rl-hero-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(237,234,227,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(237,234,227,.045) 1px,transparent 1px);
  background-size:72px 72px;
}
.rl-hero-inner{position:relative;z-index:2;padding:136px 0 96px;}
.rl-hero-tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(237,234,227,.24);color:rgba(237,234,227,.82);
  font-size:13px;letter-spacing:.04em;margin-bottom:28px;
}
.rl-hero h1{
  font-size:clamp(34px,4.8vw,62px);font-weight:700;line-height:1.12;letter-spacing:-.02em;
  margin:0;color:#F7F5F0;max-width:16em;
}
.rl-hero-sub{margin:24px 0 0;font-size:clamp(16px,1.4vw,18.5px);line-height:1.8;color:rgba(237,234,227,.76);max-width:660px;}
.rl-hero-actions{display:flex;align-items:center;gap:30px;margin-top:40px;flex-wrap:wrap;}
.rl-hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  margin-top:76px;border-top:1px solid rgba(237,234,227,.16);
}
.rl-stat{padding:26px 24px 0 0;}
.rl-stat + .rl-stat{padding-left:24px;border-left:1px solid rgba(237,234,227,.16);}
.rl-stat b{display:block;font-size:34px;font-weight:600;line-height:1.2;letter-spacing:-.01em;color:#F7F5F0;}
.rl-stat span{display:block;font-size:13.5px;color:rgba(237,234,227,.64);margin-top:6px;}
@media (max-width:991px){
  .rl-hero-inner{padding:96px 0 72px;}
  .rl-hero-stats{grid-template-columns:repeat(2,1fr);margin-top:56px;}
  .rl-stat{padding:22px 18px 0 0;}
  .rl-stat + .rl-stat{padding-left:18px;}
  .rl-stat:nth-child(odd){border-left:0;padding-left:0;}
  .rl-stat:nth-child(n+3){border-top:1px solid rgba(237,234,227,.16);margin-top:22px;}
}
@media (max-width:767px){
  .rl-hero{min-height:60vh;}
  .rl-hero-inner{padding:64px 0 56px;}
  .rl-stat b{font-size:26px;}
}

/* ---------- Headings ---------- */
.rl-h2{font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1.2;margin:0;letter-spacing:-.01em;}
.rl-lead{margin:16px 0 0;font-size:16px;line-height:1.8;color:var(--muted);max-width:740px;}
.rl-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ---------- Steps ---------- */
.rl-steps{margin-top:56px;position:relative;}
.rl-step{
  display:grid;grid-template-columns:140px 1fr;gap:28px;
  padding:38px 0;border-top:1px solid var(--line);
}
.rl-step:last-child{border-bottom:1px solid var(--line);}
.rl-step-num{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  font-size:64px;font-weight:700;line-height:.92;color:var(--ink);opacity:.18;
}
.rl-step-body h3{font-size:22px;font-weight:600;margin:0 0 12px;line-height:1.45;}
.rl-step-body p{margin:0;font-size:15px;line-height:1.85;color:var(--muted);max-width:640px;}
@media (min-width:1200px){.rl-step:nth-child(2){margin-left:96px;}}
@media (min-width:992px) and (max-width:1199px){.rl-step:nth-child(2){margin-left:64px;}}
@media (max-width:767px){
  .rl-step{grid-template-columns:1fr;gap:6px;padding:28px 0;}
  .rl-step-num{font-size:44px;}
  .rl-step-body h3{font-size:19px;}
}

/* ---------- Cases ---------- */
.rl-cases{margin-top:52px;display:grid;grid-template-columns:1.35fr 1fr;gap:32px;align-items:start;}
.rl-case{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.rl-case:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.rl-case-figure{overflow:hidden;background:var(--paper2);}
.rl-case-figure img{width:100%;height:100%;object-fit:cover;transition:transform .56s var(--ease);}
.rl-case:hover .rl-case-figure img{transform:scale(1.03);}
.rl-case-main .rl-case-figure{aspect-ratio:16/9;}
.rl-case-side{display:grid;gap:32px;}
.rl-case-mini .rl-case-figure{aspect-ratio:4/3;}
@media (min-width:992px){.rl-case-side .rl-case:nth-child(2){margin-left:34px;}}
.rl-case-body{padding:26px 28px 28px;}
.rl-case-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(47,143,123,.08);color:var(--jade);font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.rl-case-body h3{font-size:20px;font-weight:600;line-height:1.5;margin:16px 0 12px;}
.rl-case-main .rl-case-body h3{font-size:24px;}
.rl-case-body p{margin:0;font-size:15px;line-height:1.8;color:var(--muted);}
.rl-case-meta{
  display:flex;gap:0;margin-top:22px;padding-top:18px;border-top:1px solid var(--line);
}
.rl-case-meta div{flex:1;min-width:0;}
.rl-case-meta div + div{padding-left:20px;border-left:1px solid var(--line);}
.rl-case-meta b{display:block;font-family:Inter,system-ui,sans-serif;font-size:20px;font-weight:600;font-variant-numeric:tabular-nums;line-height:1.3;}
.rl-case-meta span{display:block;font-size:13px;color:var(--muted);margin-top:2px;}
.rl-case-link{display:inline-flex;align-items:center;gap:8px;margin-top:20px;font-size:14.5px;font-weight:600;color:var(--jade);}
.rl-case-link:hover{color:var(--ink);}
@media (max-width:991px){
  .rl-cases{grid-template-columns:1fr;}
  .rl-case-side{grid-template-columns:1fr 1fr;}
}
@media (max-width:640px){
  .rl-case-side{grid-template-columns:1fr;}
}

/* ---------- Badge ---------- */
.rl-badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(47,143,123,.08);color:var(--jade);font-size:12.5px;font-weight:600;letter-spacing:.02em;
  align-self:flex-start;
}

/* ---------- FAQ ---------- */
.rl-accordion{margin-top:44px;}
.rl-accordion .accordion-item{background:transparent;border:0;border-radius:0;}
.rl-accordion .accordion-item + .accordion-item{border-top:1px solid var(--line);}
.rl-accordion .accordion-item:last-child{border-bottom:1px solid var(--line);}
.rl-accordion .accordion-header{margin:0;font-family:inherit;}
.rl-accordion .accordion-button{
  display:flex;align-items:center;gap:18px;
  width:100%;padding:26px 0;background:transparent;border:0;border-radius:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;font-weight:600;color:var(--ink);text-align:left;box-shadow:none;
  transition:color .22s var(--ease);
}
.rl-accordion .accordion-button:not(.collapsed){background:transparent;color:var(--ink);box-shadow:none;}
.rl-accordion .accordion-button:hover{color:var(--jade);}
.rl-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--accent);outline-offset:2px;}
.rl-accordion .accordion-button::after{display:none;}
.rl-faq-num{
  font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:14px;font-weight:600;color:var(--accent);flex:0 0 auto;letter-spacing:.02em;
}
.rl-faq-q{flex:1 1 auto;}
.rl-faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px;margin-left:auto;transition:transform .24s var(--ease);}
.rl-faq-icon::before,.rl-faq-icon::after{content:"";position:absolute;background:var(--ink);}
.rl-faq-icon::before{left:0;top:9.5px;width:20px;height:1px;}
.rl-faq-icon::after{left:9.5px;top:0;width:1px;height:20px;}
.rl-accordion .accordion-button:not(.collapsed) .rl-faq-icon{transform:rotate(45deg);}
.rl-accordion .accordion-body{padding:0 0 28px 32px;font-size:15.5px;line-height:1.85;color:var(--muted);max-width:840px;}
@media (max-width:575px){
  .rl-accordion .accordion-button{font-size:16px;gap:12px;padding:22px 0;}
  .rl-accordion .accordion-body{padding-left:0;}
}

/* ---------- CTA ---------- */
.rl-cta{background:var(--ink);color:var(--on-dark);padding:112px 0 120px;position:relative;overflow:hidden;}
.rl-cta::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(237,234,227,.04) 1px,transparent 1px);
  background-size:100% 72px;
}
.rl-cta .rl-container{position:relative;z-index:2;}
.rl-cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:start;}
.rl-cta h2{font-size:clamp(28px,3.4vw,42px);color:#F7F5F0;margin:0;line-height:1.2;}
.rl-cta-desc{margin:20px 0 0;font-size:16px;line-height:1.85;color:rgba(237,234,227,.72);max-width:480px;}
.rl-cta-points{margin-top:34px;border-top:1px solid rgba(237,234,227,.16);}
.rl-cta-points li{
  display:flex;align-items:baseline;gap:14px;
  padding:16px 0;border-bottom:1px solid rgba(237,234,227,.16);
  font-size:15px;color:rgba(237,234,227,.78);
}
.rl-cta-points li b{font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;font-size:13px;color:var(--accent);font-weight:600;}
.rl-form{display:grid;gap:22px;}
.rl-field{display:flex;flex-direction:column;gap:10px;}
.rl-field label{font-size:14px;color:rgba(237,234,227,.76);letter-spacing:.01em;}
.rl-field input,.rl-field textarea{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-btn);
  background:rgba(237,234,227,.06);border:1px solid rgba(237,234,227,.24);
  color:#F7F5F0;font-size:15px;
  transition:border-color .22s var(--ease),background-color .22s var(--ease);
}
.rl-field textarea{height:auto;min-height:104px;padding:12px 16px;line-height:1.75;resize:vertical;}
.rl-field input::placeholder,.rl-field textarea::placeholder{color:rgba(237,234,227,.4);}
.rl-field input:focus,.rl-field textarea:focus{
  outline:2px solid var(--accent);outline-offset:-2px;border-color:transparent;
  background:rgba(237,234,227,.1);box-shadow:none;
}
.rl-form-submit{
  min-width:200px;height:52px;padding:0 34px;border:0;border-radius:var(--r-btn);
  background:var(--accent);color:#fff;font-size:16px;font-weight:600;cursor:pointer;
  transition:background-color .22s var(--ease);
}
.rl-form-submit:hover{background:#cf5a30;}
.rl-form-submit:focus-visible{outline:2px solid var(--on-dark);outline-offset:2px;}
.rl-form-note{font-size:13px;color:rgba(237,234,227,.5);line-height:1.7;margin:0;}
@media (max-width:991px){
  .rl-cta{padding:80px 0 88px;}
  .rl-cta-grid{grid-template-columns:1fr;gap:44px;}
}

/* ---------- News ---------- */
.rl-news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:48px;}
.rl-news-card{
  position:relative;display:flex;flex-direction:column;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.rl-news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.rl-news-link{position:absolute;inset:0;z-index:1;border-radius:var(--r-card);}
.rl-news-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.rl-news-title{
  margin:0;font-size:20px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rl-news-excerpt{
  margin:0;font-size:15px;line-height:1.8;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.rl-news-foot{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-top:auto;padding-top:18px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--muted);
}
.rl-read{position:relative;z-index:2;display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--jade);}
.rl-news-card:hover .rl-read{color:var(--ink);}
.rl-news-card:hover .rl-read .rl-arrow{transform:translateX(4px);}
.rl-empty{
  margin-top:48px;min-height:200px;
  border:1px solid var(--line);border-radius:var(--r-card);
  background:rgba(236,232,224,.42);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;
  padding:36px;text-align:center;
}
.rl-empty p{margin:0;font-size:15.5px;color:var(--muted);}
@media (max-width:991px){.rl-news-grid{grid-template-columns:repeat(2,1fr);gap:24px;}}
@media (max-width:640px){.rl-news-grid{grid-template-columns:1fr;}}

/* ---------- Footer ---------- */
.rl-footer{background:var(--ink);color:var(--on-dark);padding:80px 0 32px;}
.rl-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:0;}
.rl-footer-grid > div{padding:0 32px;}
.rl-footer-grid > div:first-child{padding-left:0;}
.rl-footer-grid > div:last-child{padding-right:0;}
.rl-footer-grid > div + div{border-left:1px solid rgba(237,234,227,.14);}
.rl-footer-logo{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  font-size:21px;font-weight:700;color:#F7F5F0;display:inline-flex;align-items:center;gap:10px;
}
.rl-footer-logo::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--accent);display:block;transform:translateY(-1px);}
.rl-footer-brand p{margin:18px 0 0;font-size:14.5px;line-height:1.85;color:rgba(237,234,227,.66);max-width:320px;}
.rl-footer h4{font-size:14px;font-weight:600;letter-spacing:.06em;color:rgba(237,234,227,.6);margin:0 0 20px;font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;}
.rl-footer-list li{margin-bottom:12px;}
.rl-footer-list a{font-size:15px;color:rgba(237,234,227,.86);}
.rl-footer-list a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.rl-footer-contact p{margin:0 0 14px;font-size:14.5px;color:rgba(237,234,227,.72);line-height:1.8;}
.rl-footer-bottom{
  margin-top:64px;padding-top:26px;border-top:1px solid rgba(237,234,227,.14);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(237,234,227,.5);
}
@media (max-width:991px){
  .rl-footer{padding:64px 0 28px;}
  .rl-footer-grid{grid-template-columns:1fr 1fr;gap:0;}
  .rl-footer-grid > div{padding:24px 0;}
  .rl-footer-grid > div + div{border-left:0;border-top:1px solid rgba(237,234,227,.14);}
  .rl-footer-grid > div:nth-child(2){border-top:0;padding-right:24px;}
  .rl-footer-grid > div:nth-child(3){padding-left:24px;border-left:1px solid rgba(237,234,227,.14);}
}
@media (max-width:575px){
  .rl-footer-grid{grid-template-columns:1fr;}
  .rl-footer-grid > div{padding:22px 0;}
  .rl-footer-grid > div:nth-child(2),
  .rl-footer-grid > div:nth-child(3){padding-left:0;border-left:0;}
}

/* ---------- Back to top ---------- */
.rl-totop{
  position:fixed;right:28px;bottom:28px;z-index:1040;
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:rgba(247,245,240,.94);
  color:var(--ink);font-size:15px;line-height:1;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s,border-color .24s var(--ease);
}
.rl-totop.is-visible{opacity:1;visibility:visible;transform:none;}
.rl-totop:hover{border-color:var(--ink);}
@media (max-width:575px){.rl-totop{right:16px;bottom:16px;}}

/* ---------- Reveal ---------- */
.rl-reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
.rl-reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .rl-reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --ink:#0F1D19;
  --ink-2:#16281F;
  --jade:#2F8F7B;
  --jade-dark:#25705F;
  --orange:#E4693B;
  --orange-dark:#CF5528;
  --paper:#F7F5F0;
  --sub:#ECE8E0;
  --line:#DCD6CB;
  --muted:#5C6A66;
  --on-dark:#EDEAE3;
  --r-card:10px;
  --r-btn:4px;
  --r-img:6px;
  --sh-1:0 1px 2px rgba(15,29,25,.05);
  --sh-2:0 12px 32px rgba(15,29,25,.10);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;

  --bs-primary:#2F8F7B;
  --bs-body-color:#0F1D19;
  --bs-body-bg:#F7F5F0;
  --bs-border-radius:4px;
  --bs-border-color:#DCD6CB;
  --bs-font-sans-serif:var(--font-sans);
  --bs-link-color:#2F8F7B;
  --bs-link-hover-color:#25705F;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--font-sans);font-size:16.5px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--jade);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--jade-dark)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.btn:focus,.form-control:focus{box-shadow:none}
.rl-skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--paper);padding:10px 16px;border-radius:var(--r-btn);z-index:200}
.rl-skip:focus{left:16px;top:16px}

.rl-container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.rl-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:0}

/* ---------- header ---------- */
.rl-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid transparent;
  backdrop-filter:saturate(160%) blur(10px);
  transition:border-color .3s ease,background .3s ease;
}
.rl-header.is-scrolled{border-bottom-color:var(--line);background:#F7F5F0}
.rl-nav{display:flex;align-items:center;justify-content:space-between;height:72px;transition:height .3s ease}
.rl-header.is-scrolled .rl-nav{height:60px}
.rl-logo{
  font-family:var(--font-serif);font-size:20px;font-weight:700;letter-spacing:-.01em;
  color:var(--ink);white-space:nowrap;
}
.rl-logo:hover{color:var(--ink)}
.rl-menu{display:flex;align-items:center;gap:32px}
.rl-menu li a{
  position:relative;display:inline-block;padding:4px 0;
  font-size:15px;color:var(--ink);letter-spacing:.01em;
}
.rl-menu li a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--orange);
  transition:width .24s cubic-bezier(.22,.61,.36,1);
}
.rl-menu li a:hover::after,.rl-menu li a.is-active::after{width:100%}
.rl-menu li a.is-active{font-weight:600}
.rl-nav-actions{display:flex;align-items:center;gap:14px}
.rl-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease;
}
.rl-btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.rl-btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.rl-btn-solid{background:var(--orange);color:#fff;border-color:var(--orange)}
.rl-btn-solid:hover{background:var(--orange-dark);border-color:var(--orange-dark);color:#fff}
.rl-btn-solid .rl-arw{transition:transform .22s ease}
.rl-btn-solid:hover .rl-arw{transform:translateX(4px)}
.rl-burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:transparent;padding:0;position:relative;
}
.rl-burger span{
  position:absolute;left:12px;right:12px;height:1.6px;background:var(--ink);border-radius:2px;
  transition:transform .26s ease,opacity .2s ease;
}
.rl-burger span:nth-child(1){top:16px}
.rl-burger span:nth-child(2){top:21px}
.rl-burger span:nth-child(3){top:26px}
.rl-burger.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.rl-burger.is-open span:nth-child(2){opacity:0}
.rl-burger.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- breadcrumb / article head ---------- */
.rl-art-head{background:var(--sub);border-bottom:1px solid var(--line);padding:34px 0 60px}
.rl-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}
.rl-crumb a{color:var(--muted)}
.rl-crumb a:hover{color:var(--jade)}
.rl-crumb .rl-sep{color:#B9B2A6}
.rl-crumb .is-current{color:var(--ink);max-width:min(100%,520px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rl-head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.rl-tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  background:rgba(47,143,123,.08);color:var(--jade);font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.rl-art-title{
  font-family:var(--font-serif);font-weight:700;letter-spacing:-.01em;
  font-size:clamp(30px,4.4vw,48px);line-height:1.24;max-width:880px;margin:20px 0 22px;
}
.rl-art-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 26px;font-size:13.5px;color:var(--muted)}
.rl-art-meta b{color:var(--ink);font-weight:600}
.rl-art-meta .rl-dot{width:4px;height:4px;border-radius:50%;background:#C3BCB0;display:inline-block}

/* ---------- layout ---------- */
.rl-art-wrap{padding:64px 0 96px}
.rl-art-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:64px;align-items:start}
.rl-prose{max-width:800px;min-width:0;font-size:17.5px;line-height:1.9;color:#17282352}
.rl-prose{color:#172823}
.rl-prose>*:first-child{margin-top:0}
.rl-prose p{margin:0 0 20px}
.rl-prose h2{
  font-family:var(--font-serif);font-size:30px;line-height:1.32;letter-spacing:-.01em;
  margin:52px 0 18px;padding-left:14px;border-left:3px solid var(--jade);
}
.rl-prose h3{font-size:21px;line-height:1.45;margin:38px 0 14px}
.rl-prose h4{font-size:18px;margin:30px 0 12px}
.rl-prose a{color:var(--jade);text-decoration:underline;text-underline-offset:3px}
.rl-prose ul,.rl-prose ol{margin:0 0 22px;padding-left:22px;list-style:revert}
.rl-prose li{margin-bottom:10px}
.rl-prose blockquote{
  margin:28px 0;padding:4px 0 4px 20px;border-left:3px solid var(--orange);
  color:var(--muted);font-size:16.5px;
}
.rl-prose img{border-radius:var(--r-img);margin:30px auto;transition:transform .56s cubic-bezier(.22,.61,.36,1)}
.rl-prose img:hover{transform:scale(1.03)}
.rl-prose figure{margin:30px 0}
.rl-prose figcaption,.rl-prose .wp-caption-text{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.rl-prose hr{border:0;border-top:1px solid var(--line);margin:40px 0}
.rl-prose code{
  background:var(--sub);border-radius:4px;padding:2px 6px;font-size:.92em;
  font-family:var(--font-num);
}
.rl-prose pre{
  background:var(--ink);color:var(--on-dark);padding:20px 22px;border-radius:8px;
  overflow-x:auto;font-size:14.5px;line-height:1.7;margin:0 0 24px;
}
.rl-prose pre code{background:transparent;padding:0;color:inherit}
.rl-prose table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:0 0 26px;font-size:15.5px}
.rl-prose th,.rl-prose td{border:1px solid var(--line);padding:11px 14px;text-align:left;white-space:nowrap}
.rl-prose th{background:var(--sub);font-weight:600}
.rl-empty{
  border:1px solid var(--line);border-radius:var(--r-card);background:#fff;
  padding:56px 32px;text-align:center;box-shadow:var(--sh-1);
}
.rl-empty h3{font-size:20px;margin-bottom:10px}
.rl-empty p{color:var(--muted);font-size:15px;margin-bottom:22px}

/* ---------- aside ---------- */
.rl-aside{position:sticky;top:104px;display:grid;gap:24px}
.rl-side-card{
  border:1px solid var(--line);border-radius:var(--r-card);background:#fff;padding:24px;
  box-shadow:var(--sh-1);
}
.rl-side-card h3{font-size:16px;letter-spacing:.02em;margin-bottom:6px}
.rl-side-sub{font-size:13px;color:var(--muted);margin-bottom:16px}
.rl-rel{display:grid;gap:2px}
.rl-rel li+li{border-top:1px solid var(--line)}
.rl-rel a{display:block;padding:14px 2px}
.rl-rel-title{display:block;font-size:15px;font-weight:600;color:var(--ink);line-height:1.55;margin-bottom:6px}
.rl-rel a:hover .rl-rel-title{color:var(--jade)}
.rl-rel-date{display:block;font-family:var(--font-num);font-size:12.5px;color:var(--muted);letter-spacing:.04em}
.rl-side-cta{background:var(--ink);border-color:var(--ink);color:var(--on-dark);box-shadow:none}
.rl-side-cta h3,.rl-side-cta .rl-side-sub{color:var(--on-dark)}
.rl-side-cta .rl-side-sub{color:rgba(237,234,227,.66)}
.rl-side-cta .rl-btn{width:100%}

.rl-endbar{
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  margin-top:56px;padding-top:28px;border-top:1px solid var(--line);
}
.rl-endbar .rl-back{font-size:15px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:8px}
.rl-endbar .rl-back:hover{color:var(--jade)}

/* ---------- cta band ---------- */
.rl-cta{background:var(--ink);color:var(--on-dark);padding:96px 0 112px}
.rl-cta-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:start}
.rl-cta h2{color:#fff;font-family:var(--font-serif);font-size:clamp(28px,3.4vw,40px);line-height:1.25;margin-bottom:18px}
.rl-cta p{color:rgba(237,234,227,.74);font-size:16px;max-width:520px}
.rl-form{display:grid;gap:16px}
.rl-field{display:grid;gap:8px}
.rl-field label{font-size:13.5px;color:rgba(237,234,227,.8);letter-spacing:.02em}
.rl-form .rl-input{
  height:48px;width:100%;background:transparent;border:1px solid rgba(237,234,227,.28);
  border-radius:var(--r-btn);color:#fff;padding:0 14px;font-size:15px;
  transition:border-color .2s ease;
}
.rl-form textarea.rl-input{height:auto;padding:12px 14px;resize:vertical;min-height:96px}
.rl-form .rl-input::placeholder{color:rgba(237,234,227,.42)}
.rl-form .rl-input:focus{border-color:var(--orange);outline:2px solid var(--orange);outline-offset:0}
.rl-form .rl-btn{justify-self:start;min-width:200px}

/* ---------- footer ---------- */
.rl-footer{background:var(--ink);color:var(--on-dark);padding:72px 0 28px}
.rl-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:0}
.rl-footer-grid>div{padding:0 28px;border-left:1px solid rgba(237,234,227,.14)}
.rl-footer-grid>div:first-child{padding-left:0;border-left:0}
.rl-footer-grid>div:last-child{padding-right:0}
.rl-footer-logo{display:block;font-family:var(--font-serif);font-size:19px;font-weight:700;color:#fff;margin-bottom:14px}
.rl-footer p{color:rgba(237,234,227,.68);font-size:14px;line-height:1.85}
.rl-footer h4{color:#fff;font-size:14px;letter-spacing:.06em;margin-bottom:16px;font-weight:600}
.rl-footer-list{display:grid;gap:10px}
.rl-footer-list a{color:rgba(237,234,227,.72);font-size:14px}
.rl-footer-list a:hover{color:#fff}
.rl-footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(237,234,227,.14);
  font-size:13px;color:rgba(237,234,227,.6);font-family:var(--font-num);
}

/* ---------- to top ---------- */
.rl-top{
  position:fixed;right:28px;bottom:28px;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--ink);display:grid;place-items:center;
  box-shadow:var(--sh-1);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .26s ease,transform .26s ease,visibility .26s;cursor:pointer;z-index:70;
}
.rl-top.is-show{opacity:1;visibility:visible;transform:none}
.rl-top:hover{box-shadow:var(--sh-2)}

/* ---------- reveal ---------- */
.rl-reveal{opacity:0;transform:translateY(12px);transition:opacity .48s cubic-bezier(.22,.61,.36,1),transform .48s cubic-bezier(.22,.61,.36,1)}
.rl-reveal.is-in{opacity:1;transform:none}

@media (max-width:1199.98px){
  .rl-art-grid{grid-template-columns:minmax(0,1fr) 290px;gap:44px}
  .rl-prose h2{font-size:27px}
}
@media (max-width:991.98px){
  .rl-container{padding:0 28px}
  .rl-menu{
    position:absolute;top:100%;left:0;right:0;display:block;
    background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:8px 28px 20px;gap:0;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .26s ease,transform .26s ease,visibility .26s;
  }
  .rl-menu.is-open{opacity:1;visibility:visible;transform:none}
  .rl-menu li{border-bottom:1px solid var(--line)}
  .rl-menu li:last-child{border-bottom:0}
  .rl-menu li a{display:block;padding:17px 2px;font-size:18px}
  .rl-menu li a::after{bottom:10px}
  .rl-burger{display:block}
  .rl-nav-actions .rl-btn-ghost{display:none}
  .rl-art-grid{grid-template-columns:1fr;gap:44px}
  .rl-aside{position:static}
  .rl-cta-inner{grid-template-columns:1fr;gap:36px}
  .rl-footer-grid{grid-template-columns:1fr 1fr;gap:36px 0}
  .rl-footer-grid>div{padding:0 20px}
  .rl-footer-grid>div:nth-child(odd){padding-left:0;border-left:0}
  .rl-footer-grid>div:nth-child(even){padding-right:0}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .rl-container{padding:0 20px}
  .rl-menu{padding:8px 20px 16px}
  .rl-art-head{padding:24px 0 44px}
  .rl-art-wrap{padding:44px 0 68px}
  .rl-prose{font-size:17px}
  .rl-prose h2{font-size:25px;margin:40px 0 16px}
  .rl-prose h3{font-size:19.5px}
  .rl-cta{padding:68px 0 76px}
  .rl-footer{padding:56px 0 24px}
  .rl-footer-grid{grid-template-columns:1fr;gap:32px}
  .rl-footer-grid>div{padding:0;border-left:0}
  .rl-footer-grid>div+div{padding-top:28px;border-top:1px solid rgba(237,234,227,.14)}
  .rl-top{right:16px;bottom:16px}
  .rl-endbar .rl-btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .rl-reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --ink:#0F1D19;
  --jade:#2F8F7B;
  --persimmon:#E4693B;
  --paper:#F7F5F0;
  --paper-2:#ECE8E0;
  --line:#DCD6CB;
  --muted:#5C6A66;
  --on-dark:#EDEAE3;
  --white:#FFFFFF;
  --radius-card:10px;
  --radius-btn:4px;
  --radius-img:6px;
  --shadow-1:0 1px 2px rgba(15,29,25,.05);
  --shadow-2:0 12px 32px rgba(15,29,25,.10);
  --gutter:32px;
  --section:112px;
  --ease:cubic-bezier(.22,.61,.36,1);

  --bs-primary:#2F8F7B;
  --bs-primary-rgb:47,143,123;
  --bs-body-color:#0F1D19;
  --bs-body-bg:#F7F5F0;
  --bs-border-color:#DCD6CB;
  --bs-border-radius:4px;
  --bs-border-radius-lg:10px;
  --bs-link-color:#2F8F7B;
  --bs-link-hover-color:#0F1D19;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --bs-body-font-family:var(--bs-font-sans-serif);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:var(--jade);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--ink);}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;margin:0;color:var(--ink);}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
::selection{background:rgba(47,143,123,.18);}

.rl-container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}

/* ============ 导航 ============ */
.rl-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,240,.92);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),background-color .3s var(--ease);
}
.rl-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
  background:rgba(247,245,240,.97);
}
.rl-nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height .3s var(--ease);
}
.rl-header.is-scrolled .rl-nav{height:62px;}
.rl-logo{
  font-family:"Noto Serif SC","Songti SC",serif;
  font-size:21px;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--ink);
  white-space:nowrap;
}
.rl-logo:hover{color:var(--ink);}
.rl-menu{
  display:flex;
  align-items:center;
  gap:30px;
  list-style:none;
  margin:0;
  padding:0;
}
.rl-menu a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:#33403C;
  white-space:nowrap;
}
.rl-menu a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--persimmon);
  transition:width .24s var(--ease);
}
.rl-menu a:hover{color:var(--ink);}
.rl-menu a:hover::after{width:100%;}
.rl-menu a.is-active{color:var(--ink);font-weight:600;}
.rl-menu a.is-active::after{width:100%;}
.rl-nav-actions{display:flex;align-items:center;gap:12px;}

.rl-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.rl-btn-primary{background:var(--persimmon);color:#fff;}
.rl-btn-primary:hover{background:#CE5730;color:#fff;}
.rl-btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);}
.rl-btn-ghost:hover{border-color:var(--ink);background:rgba(15,29,25,.04);color:var(--ink);}
.rl-btn:focus-visible{outline:2px solid var(--jade);outline-offset:2px;}

.rl-burger{
  display:none;
  width:44px;
  height:44px;
  padding:0;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:transparent;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.rl-burger span{
  display:block;
  width:18px;
  height:1.5px;
  background:var(--ink);
  transition:transform .26s var(--ease),opacity .26s var(--ease);
}
.rl-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.rl-burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.rl-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

/* ============ 分类页顶部 ============ */
.cat-hero{
  position:relative;
  padding:104px 0 56px;
  color:var(--on-dark);
  background-image:
    linear-gradient(180deg,rgba(15,29,25,.78),rgba(15,29,25,.72)),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(237,234,227,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(237,234,227,.05) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.6;
}
.cat-hero .rl-container{position:relative;z-index:1;}

.rl-crumb{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13.5px;
  margin-bottom:32px;
  color:rgba(237,234,227,.62);
}
.rl-crumb a{color:rgba(237,234,227,.82);}
.rl-crumb a:hover{color:#fff;}
.rl-crumb span.is-current{color:rgba(237,234,227,.55);}

.cat-hero-kicker{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--persimmon);
  margin:0 0 18px;
  font-weight:600;
}
.cat-hero-title{
  font-size:clamp(34px,4.6vw,60px);
  font-weight:700;
  line-height:1.14;
  letter-spacing:-.02em;
  color:#fff;
  max-width:900px;
  margin:0 0 22px;
}
.cat-hero-desc{
  font-size:17px;
  line-height:1.85;
  color:rgba(237,234,227,.80);
  max-width:720px;
  margin:0;
}
.cat-anchors{
  display:flex;
  flex-wrap:wrap;
  gap:12px 30px;
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid rgba(237,234,227,.18);
}
.cat-anchors a{
  font-size:14.5px;
  color:rgba(237,234,227,.76);
  padding-bottom:2px;
  border-bottom:1px solid transparent;
}
.cat-anchors a:hover,.cat-anchors a.is-active{
  color:#fff;
  border-bottom-color:var(--persimmon);
}

/* ============ 主体两栏 ============ */
.cat-body{padding:var(--section) 0;}
.cat-layout{
  display:grid;
  grid-template-columns:212px minmax(0,1fr);
  gap:64px;
  align-items:start;
}
.cat-side{
  position:sticky;
  top:104px;
  padding-right:4px;
}
.cat-side-title{
  font-size:12.5px;
  letter-spacing:.14em;
  color:var(--muted);
  margin:0 0 18px;
  font-weight:600;
}
.cat-side-list{list-style:none;margin:0 0 28px;padding:0;border-left:1px solid var(--line);}
.cat-side-list li{margin:0;}
.cat-side-list a{
  display:block;
  padding:9px 0 9px 18px;
  font-size:14.5px;
  color:var(--muted);
  border-left:2px solid transparent;
  margin-left:-1px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.cat-side-list a:hover{color:var(--ink);}
.cat-side-list a.is-active{color:var(--ink);font-weight:600;border-left-color:var(--jade);}
.cat-side-cta{width:100%;}

.cat-section{
  padding-bottom:64px;
  margin-bottom:64px;
  border-bottom:1px solid var(--line);
}
.cat-section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.cat-h2{
  font-size:clamp(26px,3vw,36px);
  font-weight:700;
  line-height:1.24;
  letter-spacing:-.01em;
  margin:0 0 16px;
}
.cat-lead{
  font-size:16px;
  color:var(--muted);
  max-width:720px;
  margin:0 0 40px;
}

/* 步骤轴 */
.flow-axis{list-style:none;position:relative;}
.flow-axis::before{
  content:"";
  position:absolute;
  left:27px;
  top:14px;
  bottom:26px;
  width:1px;
  background:var(--line);
}
.flow-axis > li{
  position:relative;
  display:flex;
  gap:26px;
  padding-bottom:36px;
}
.flow-axis > li:last-child{padding-bottom:0;}
.flow-num{
  flex:0 0 auto;
  width:56px;
  height:56px;
  border-radius:50%;
  background:var(--paper);
  border:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:"Noto Serif SC","Songti SC",serif;
  font-size:19px;
  font-weight:700;
  color:var(--persimmon);
  letter-spacing:-.02em;
  position:relative;
  z-index:1;
}
.flow-body h3{font-size:21px;font-weight:600;margin:8px 0 10px;}
.flow-body p{font-size:15.5px;color:var(--muted);margin:0;}

/* 准备清单 */
.prep-grid{
  list-style:none;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
}
.prep-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease);
}
.prep-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.prep-card h3{font-size:19px;font-weight:600;margin:0 0 10px;}
.prep-card p{font-size:15px;color:var(--muted);margin:0;}
.prep-card .rl-tag{margin-bottom:14px;}

.rl-tag{
  display:inline-block;
  padding:3px 12px;
  border-radius:999px;
  background:rgba(47,143,123,.08);
  color:var(--jade);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:1.6;
}

/* 操作要点图文 */
.detail-row{
  display:grid;
  grid-template-columns:minmax(0,.86fr) minmax(0,1fr);
  gap:40px;
  align-items:center;
  padding:32px 0;
  border-bottom:1px dashed var(--line);
}
.detail-row:first-of-type{padding-top:0;}
.detail-row:last-of-type{border-bottom:0;padding-bottom:0;}
.detail-row.is-reverse .detail-figure{order:2;}
.detail-figure{margin:0;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);background:var(--paper-2);}
.detail-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .56s var(--ease);}
.detail-figure:hover img{transform:scale(1.03);}
.detail-text h3{font-size:20px;font-weight:600;margin:0 0 12px;}
.detail-text p{font-size:15.5px;color:var(--muted);}

/* 卡点卡片 */
.issue-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
}
.issue-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease);
}
.issue-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.issue-card h3{
  font-size:18px;
  font-weight:600;
  margin:0 0 10px;
  display:flex;
  align-items:baseline;
  gap:10px;
}
.issue-card h3 .num{
  font-family:Inter,system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:13px;
  color:var(--persimmon);
  letter-spacing:.04em;
}
.issue-card p{font-size:15px;color:var(--muted);margin:0;}

/* 数据条 */
.stat-row{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:32px;
  padding-top:28px;
  border-top:1px solid var(--line);
  margin-top:8px;
}
.stat-item .stat-num{
  font-family:Inter,system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:40px;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.1;
  color:var(--ink);
  display:block;
  margin-bottom:8px;
}
.stat-item .stat-num em{font-style:normal;font-size:17px;color:var(--muted);margin-left:4px;font-weight:500;}
.stat-item p{font-size:14px;color:var(--muted);margin:0;}

/* 手风琴 */
.rl-faq .accordion{--bs-accordion-border-width:0;--bs-accordion-bg:transparent;--bs-accordion-border-radius:0;}
.rl-faq .accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--line);
  border-radius:0;
}
.rl-faq .accordion-item:last-child{border-bottom:1px solid var(--line);}
.rl-faq .accordion-button{
  background:transparent;
  border:0;
  border-radius:0 !important;
  box-shadow:none;
  padding:22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  display:flex;
  align-items:center;
  gap:14px;
}
.rl-faq .accordion-button:not(.collapsed){background:transparent;color:var(--ink);box-shadow:none;}
.rl-faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--jade);outline-offset:-2px;}
.rl-faq .accordion-button::after{display:none;}
.rl-faq .rl-faq-num{
  font-family:Inter,system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.04em;
  flex:0 0 auto;
}
.rl-faq .rl-faq-q{flex:1 1 auto;text-align:left;}
.rl-faq .rl-faq-icon{
  position:relative;
  flex:0 0 auto;
  width:16px;
  height:16px;
  transition:transform .24s var(--ease);
}
.rl-faq .rl-faq-icon::before,
.rl-faq .rl-faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
}
.rl-faq .rl-faq-icon::before{left:0;top:7.25px;width:16px;height:1.5px;}
.rl-faq .rl-faq-icon::after{top:0;left:7.25px;width:1.5px;height:16px;}
.rl-faq .accordion-button:not(.collapsed) .rl-faq-icon{transform:rotate(45deg);}
.rl-faq .accordion-body{
  padding:0 0 24px;
  font-size:15.5px;
  color:var(--muted);
  line-height:1.9;
}

/* ============ CTA ============ */
.cta-block{
  background:var(--ink);
  color:var(--on-dark);
  padding:96px 0 120px;
}
.cta-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:64px;
  align-items:start;
}
.cta-block h2{
  color:#fff;
  font-size:clamp(28px,3.6vw,42px);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.01em;
  margin:0 0 18px;
}
.cta-block .cta-copy p{
  color:rgba(237,234,227,.74);
  font-size:16px;
  max-width:480px;
}
.cta-points{list-style:none;margin:32px 0 0;padding:0;border-top:1px solid rgba(237,234,227,.16);}
.cta-points li{
  padding:14px 0;
  border-bottom:1px solid rgba(237,234,227,.16);
  font-size:15px;
  color:rgba(237,234,227,.80);
  display:flex;
  gap:12px;
  align-items:baseline;
}
.cta-points li span{color:var(--persimmon);font-family:Inter,system-ui,sans-serif;font-size:13px;font-variant-numeric:tabular-nums;}

.cta-form .form-field{margin-bottom:20px;}
.cta-form label{
  display:block;
  margin-bottom:8px;
  font-size:14px;
  color:rgba(237,234,227,.72);
}
.cta-form .form-control{
  width:100%;
  height:48px;
  padding:0 14px;
  font-size:15px;
  font-family:inherit;
  color:var(--on-dark);
  background:rgba(237,234,227,.06);
  border:1px solid rgba(237,234,227,.28);
  border-radius:var(--radius-btn);
  transition:border-color .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cta-form textarea.form-control{
  height:auto;
  min-height:106px;
  padding:12px 14px;
  resize:vertical;
  line-height:1.7;
}
.cta-form .form-control::placeholder{color:rgba(237,234,227,.40);}
.cta-form .form-control:focus{
  outline:none;
  background:rgba(237,234,227,.10);
  border-color:var(--persimmon);
  box-shadow:0 0 0 1px var(--persimmon);
}
.cta-form .form-hint{font-size:13px;color:rgba(237,234,227,.48);margin:0 0 18px;}
.cta-form .rl-btn{min-width:200px;}

/* ============ 页脚 ============ */
.rl-footer{
  background:var(--ink);
  color:var(--on-dark);
  padding:72px 0 32px;
  border-top:1px solid rgba(237,234,227,.12);
}
.rl-footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:0;
  padding-bottom:48px;
}
.rl-footer-grid > div{
  padding:0 32px;
  border-left:1px solid rgba(237,234,227,.14);
}
.rl-footer-grid > div:first-child{padding-left:0;border-left:0;}
.rl-footer-grid > div:last-child{padding-right:0;}
.rl-footer-logo{
  display:block;
  font-family:"Noto Serif SC","Songti SC",serif;
  font-size:20px;
  font-weight:700;
  letter-spacing:-.02em;
  color:#fff;
  margin-bottom:16px;
}
.rl-footer-brand p{
  font-size:14.5px;
  color:rgba(237,234,227,.66);
  max-width:300px;
}
.rl-footer h4{
  font-family:var(--bs-font-sans-serif);
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:rgba(237,234,227,.52);
  margin:0 0 18px;
}
.rl-footer-list{list-style:none;margin:0;padding:0;}
.rl-footer-list li{margin-bottom:12px;}
.rl-footer-list a{font-size:14.5px;color:rgba(237,234,227,.78);}
.rl-footer-list a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.rl-footer-contact p{
  font-size:14px;
  color:rgba(237,234,227,.66);
  margin:0 0 10px;
}
.rl-footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  padding-top:28px;
  border-top:1px solid rgba(237,234,227,.14);
  font-size:13.5px;
  color:rgba(237,234,227,.52);
  font-variant-numeric:tabular-nums;
}

/* 返回顶部 */
.rl-top{
  position:fixed;
  right:28px;
  bottom:28px;
  z-index:70;
  width:46px;
  height:46px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--paper);
  color:var(--ink);
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease);
}
.rl-top.is-show{opacity:1;visibility:visible;transform:none;}
.rl-top:hover{background:var(--paper-2);}

/* 动效 */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .48s var(--ease),transform .48s var(--ease);
}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .cat-layout{grid-template-columns:190px minmax(0,1fr);gap:48px;}
  .rl-menu{gap:22px;}
  .rl-menu a{font-size:14.5px;}
  .rl-footer-grid > div{padding:0 24px;}
}
@media (max-width:991px){
  .rl-container{padding:0 28px;}
  .rl-burger{display:flex;}
  .rl-menu{
    position:fixed;
    left:0;
    right:0;
    top:72px;
    bottom:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 28px 48px;
    background:var(--paper);
    border-top:1px solid var(--line);
    overflow-y:auto;
    transform:translateY(-10px);
    opacity:0;
    visibility:hidden;
    transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease);
  }
  .rl-menu.is-open{opacity:1;visibility:visible;transform:none;}
  .rl-menu li{border-bottom:1px solid var(--line);}
  .rl-menu a{display:block;padding:18px 0;font-size:18px;}
  .rl-menu a::after{display:none;}

  :root{--section:80px;}
  .cat-hero{padding:72px 0 44px;}
  .cat-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .cat-side{position:static;margin-bottom:44px;padding:20px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--white);}
  .cat-side-list{display:flex;flex-wrap:wrap;gap:8px 20px;border-left:0;margin-bottom:20px;}
  .cat-side-list a{padding:6px 0;border-left:0;margin-left:0;border-bottom:2px solid transparent;}
  .cat-side-list a.is-active{border-left:0;border-bottom-color:var(--jade);}
  .cat-side-cta{width:auto;}
  .prep-grid,.issue-grid{grid-template-columns:minmax(0,1fr);}
  .detail-row,.detail-row.is-reverse{grid-template-columns:minmax(0,1fr);gap:24px;}
  .detail-row.is-reverse .detail-figure{order:0;}
  .cta-grid{grid-template-columns:minmax(0,1fr);gap:44px;}
  .rl-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:40px 0;}
  .rl-footer-grid > div:nth-child(3){padding-left:0;border-left:0;}
}
@media (max-width:767px){
  .cat-hero-title{font-size:clamp(30px,8vw,40px);}
  .cat-hero-desc{font-size:15.5px;}
  .cat-anchors{gap:10px 22px;margin-top:32px;}
  .cat-section{padding-bottom:48px;margin-bottom:48px;}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .cta-block{padding:64px 0 84px;}
}
@media (max-width:575px){
  .rl-container{padding:0 20px;}
  :root{--section:56px;}
  .rl-menu{top:72px;}
  .rl-nav{gap:12px;}
  .rl-logo{font-size:18px;}
  .rl-nav-actions .rl-btn-ghost{display:none;}
  .flow-axis::before{left:21px;}
  .flow-num{width:44px;height:44px;font-size:16px;}
  .flow-axis > li{gap:18px;}
  .flow-body h3{font-size:19px;}
  .prep-card,.issue-card{padding:20px;}
  .stat-row{grid-template-columns:minmax(0,1fr);}
  .stat-item .stat-num{font-size:34px;}
  .rl-footer-grid{grid-template-columns:minmax(0,1fr);gap:32px 0;}
  .rl-footer-grid > div{padding:0;border-left:0;}
  .rl-top{right:16px;bottom:16px;}
  .cta-form .rl-btn{width:100%;min-width:0;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .prep-card,.issue-card,.detail-figure img,.rl-btn,.rl-menu a::after{transition:none;}
  .prep-card:hover,.issue-card:hover{transform:none;}
  .detail-figure:hover img{transform:none;}
}

/* roulang page: category2 */
:root{
  --rl-ink:#0F1D19;
  --rl-jade:#2F8F7B;
  --rl-orange:#E4693B;
  --rl-orange-dark:#CF5A2E;
  --rl-paper:#F7F5F0;
  --rl-paper-2:#ECE8E0;
  --rl-line:#DCD6CB;
  --rl-muted:#5C6A66;
  --rl-cream:#EDEAE3;
  --r-card:10px;
  --r-btn:4px;
  --r-img:6px;
  --sh-1:0 1px 2px rgba(15,29,25,.05);
  --sh-2:0 12px 32px rgba(15,29,25,.10);
  --c-max:1200px;
  --sp-section:112px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --bs-primary:#2F8F7B;
  --bs-body-color:#0F1D19;
  --bs-body-bg:#F7F5F0;
  --bs-border-radius:4px;
  --bs-border-radius-sm:4px;
  --bs-border-radius-lg:10px;
  --bs-font-sans-serif:var(--font-sans);
  --bs-link-color:#2F8F7B;
  --bs-link-hover-color:#0F1D19;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--rl-paper);
  color:var(--rl-ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--rl-jade);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--rl-ink)}
h1,h2,h3,h4{font-family:var(--font-serif);margin:0;font-weight:700;color:var(--rl-ink);letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
button:focus-visible,a:focus-visible{outline:2px solid var(--rl-orange);outline-offset:3px}
.num,.rl-figure b,.rl-step b{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

.rl-container{width:100%;max-width:var(--c-max);margin:0 auto;padding:0 40px}

/* ---------- header ---------- */
.rl-header{
  --rl-nav-fg:#EDEAE3;
  --rl-nav-h:72px;
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:transparent;
  transition:background .26s ease,border-color .26s ease,height .26s ease;
  border-bottom:1px solid transparent;
}
.rl-header.is-scrolled{
  --rl-nav-fg:#0F1D19;
  --rl-nav-h:60px;
  background:rgba(247,245,240,.96);
  border-bottom:1px solid var(--rl-line);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.rl-nav{display:flex;align-items:center;gap:32px;height:var(--rl-nav-h);transition:height .26s ease}
.rl-logo{
  font-family:var(--font-serif);font-size:20px;font-weight:700;line-height:1;
  color:var(--rl-nav-fg);text-decoration:none;white-space:nowrap;letter-spacing:-.01em;
}
.rl-logo:hover{color:var(--rl-nav-fg)}
.rl-menu{display:flex;align-items:center;gap:28px;flex:1;justify-content:center}
.rl-menu a{
  position:relative;display:inline-block;padding:6px 0;font-size:15px;
  color:var(--rl-nav-fg);opacity:.78;text-decoration:none;transition:opacity .22s ease;
}
.rl-menu a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--rl-orange);transition:width .24s cubic-bezier(.22,.61,.36,1);
}
.rl-menu a:hover{opacity:1}
.rl-menu a:hover::after{width:100%}
.rl-menu a.is-active{opacity:1}
.rl-menu a.is-active::after{width:100%;bottom:-6px}
.rl-nav-actions{display:flex;align-items:center;gap:14px}
.rl-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;line-height:1;cursor:pointer;border:1px solid transparent;
  text-decoration:none;transition:background-color .22s ease,border-color .22s ease,color .22s ease,transform .22s ease;
}
.rl-btn-primary{background:var(--rl-orange);border-color:var(--rl-orange);color:#fff}
.rl-btn-primary:hover{background:var(--rl-orange-dark);border-color:var(--rl-orange-dark);color:#fff}
.rl-btn-ghost{background:transparent;border-color:rgba(237,234,227,.42);color:#EDEAE3}
.rl-btn-ghost:hover{border-color:rgba(237,234,227,.85);color:#fff}
.rl-header.is-scrolled .rl-btn-ghost{border-color:var(--rl-line);color:var(--rl-ink)}
.rl-header.is-scrolled .rl-btn-ghost:hover{border-color:var(--rl-ink);color:var(--rl-ink)}
.rl-burger{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 11px;background:transparent;
  border:1px solid rgba(237,234,227,.35);border-radius:var(--r-btn);cursor:pointer;
}
.rl-header.is-scrolled .rl-burger{border-color:var(--rl-line)}
.rl-burger span{display:block;height:1.5px;width:100%;background:var(--rl-nav-fg);transition:transform .26s ease,opacity .26s ease}
.rl-burger.is-open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.rl-burger.is-open span:nth-child(2){opacity:0}
.rl-burger.is-open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ---------- hero ---------- */
.rl-hero{
  position:relative;padding:168px 0 64px;overflow:hidden;
  background:#0F1D19 url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  color:var(--rl-cream);
}
.rl-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,29,25,.70) 0%,rgba(15,29,25,.80) 100%)}
.rl-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.45;
  background-image:linear-gradient(rgba(237,234,227,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(237,234,227,.06) 1px,transparent 1px);
  background-size:64px 64px;
}
.rl-hero-inner{position:relative;z-index:2}
.rl-hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  border:1px solid rgba(237,234,227,.28);font-size:13px;letter-spacing:.14em;color:rgba(237,234,227,.74);
}
.rl-hero h1{
  color:#fff;font-size:clamp(40px,6.4vw,80px);line-height:1.12;letter-spacing:-.02em;
  margin:26px 0 20px;max-width:16em;
}
.rl-hero-lead{max-width:640px;font-size:17px;line-height:1.85;color:rgba(237,234,227,.82)}
.rl-anchors{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:10px 30px;
  margin-top:40px;padding-top:24px;border-top:1px solid rgba(237,234,227,.18);
}
.rl-anchors a{font-size:15px;color:rgba(237,234,227,.78);padding-bottom:2px}
.rl-anchors a:hover{color:#fff}
.rl-anchors a::before{
  content:"";display:inline-block;width:5px;height:5px;border-radius:50%;
  background:var(--rl-orange);margin-right:9px;vertical-align:middle;
}
.rl-figures{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;margin-top:48px;
  border-top:1px solid rgba(237,234,227,.18);
}
.rl-figure{flex:1 1 0;min-width:150px;padding:20px 24px 0 24px}
.rl-figure:first-child{padding-left:0}
.rl-figure + .rl-figure{border-left:1px solid rgba(237,234,227,.18)}
.rl-figure b{display:block;font-family:var(--font-serif);font-size:28px;line-height:1.2;color:#fff}
.rl-figure span{font-size:13px;color:rgba(237,234,227,.66)}

/* ---------- sections ---------- */
.rl-section{padding:var(--sp-section) 0}
.rl-section--alt{background:var(--rl-paper-2)}
.rl-head{max-width:760px;margin-bottom:56px}
.rl-eyebrow{display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--rl-jade);margin-bottom:14px}
.rl-head h2{font-size:clamp(26px,3.4vw,40px);line-height:1.22}
.rl-head p{margin-top:14px;font-size:16px;color:var(--rl-muted)}

/* 疑问速览 */
.rl-qgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 56px}
.rl-qitem{display:flex;gap:18px;padding:24px 0;border-top:1px solid var(--rl-line)}
.rl-qitem-num{font-family:var(--font-serif);font-size:18px;line-height:1.5;color:var(--rl-jade);min-width:32px}
.rl-qitem h3{font-size:18px;font-weight:600;margin-bottom:6px}
.rl-qitem p{font-size:15px;line-height:1.75;color:var(--rl-muted)}

/* 图文对照 */
.rl-compare{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.rl-compare + .rl-compare{margin-top:104px}
.rl-compare--reverse .rl-compare-media{order:2}
.rl-compare-media{overflow:hidden;border:1px solid var(--rl-line);border-radius:var(--r-img);background:rgba(15,29,25,.06)}
.rl-compare-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .56s cubic-bezier(.22,.61,.36,1)}
.rl-compare-media:hover img{transform:scale(1.03)}
.rl-compare-body h3{font-size:22px;font-weight:600;margin-bottom:14px}
.rl-compare-body > p{font-size:16px;color:var(--rl-muted)}
.rl-checklist{margin-top:22px}
.rl-checklist li{display:flex;gap:14px;padding:14px 0;border-top:1px solid var(--rl-line);font-size:15px}
.rl-checklist li span{font-family:var(--font-serif);color:var(--rl-jade);min-width:26px}
.rl-checklist li em{font-style:normal;color:var(--rl-ink)}
.rl-checklist li small{display:block;font-size:14px;color:var(--rl-muted);line-height:1.7}

/* 处理顺序 */
.rl-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px}
.rl-step{border-top:2px solid var(--rl-ink);padding-top:20px}
.rl-step b{display:block;font-family:var(--font-serif);font-size:34px;line-height:1;color:rgba(15,29,25,.18);margin-bottom:14px}
.rl-step h3{font-size:19px;font-weight:600;margin-bottom:8px}
.rl-step p{font-size:15px;color:var(--rl-muted)}

/* FAQ */
.rl-faq{max-width:900px}
.rl-faq-item{border-bottom:1px solid var(--rl-line)}
.rl-faq-item:first-child{border-top:1px solid var(--rl-line)}
.rl-faq-trigger{
  display:flex;align-items:center;gap:18px;width:100%;padding:24px 0;
  background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--rl-ink);
  transition:color .22s ease;
}
.rl-faq-trigger:hover{color:var(--rl-jade)}
.rl-faq-num{font-family:var(--font-serif);font-size:14px;color:var(--rl-muted);min-width:28px}
.rl-faq-plus{position:relative;width:16px;height:16px;flex:0 0 16px;margin-left:auto;transition:transform .24s cubic-bezier(.22,.61,.36,1)}
.rl-faq-plus::before,.rl-faq-plus::after{content:"";position:absolute;background:var(--rl-ink);border-radius:1px}
.rl-faq-plus::before{left:0;top:7.25px;width:16px;height:1.5px}
.rl-faq-plus::after{top:0;left:7.25px;width:1.5px;height:16px}
.rl-faq-trigger[aria-expanded="true"] .rl-faq-plus{transform:rotate(45deg)}
.rl-faq-answer{padding:0 0 26px 46px;font-size:16px;line-height:1.85;color:var(--rl-muted)}
.rl-faq-answer p + p{margin-top:12px}

/* 更新说明 */
.rl-notes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.rl-note{background:var(--rl-paper);border:1px solid var(--rl-line);border-radius:var(--r-card);padding:26px;transition:transform .26s ease,box-shadow .26s ease}
.rl-note:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.rl-note-badge{
  display:inline-block;padding:4px 12px;border-radius:999px;font-size:13px;
  background:rgba(47,143,123,.08);color:var(--rl-jade);margin-bottom:16px;
}
.rl-note h3{font-size:19px;font-weight:600;margin-bottom:8px}
.rl-note p{font-size:15px;color:var(--rl-muted)}
.rl-link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;color:var(--rl-jade);margin-top:36px}
.rl-link-arrow span{transition:transform .22s ease}
.rl-link-arrow:hover span{transform:translateX(4px)}

/* CTA */
.rl-cta{background:var(--rl-ink);color:var(--rl-cream);padding:var(--sp-section) 0 120px}
.rl-cta .rl-eyebrow{color:rgba(237,234,227,.6)}
.rl-cta h2{color:#fff;font-size:clamp(26px,3.4vw,38px);line-height:1.24;max-width:16em}
.rl-cta-lead{margin-top:16px;max-width:640px;font-size:16px;color:rgba(237,234,227,.78)}
.rl-form{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:44px}
.rl-field label{display:block;font-size:14px;color:rgba(237,234,227,.72);margin-bottom:8px}
.rl-field--full{grid-column:1/-1}
.rl-input{
  width:100%;height:48px;padding:0 14px;font-size:15px;color:var(--rl-cream);
  background:transparent;border:1px solid rgba(237,234,227,.26);border-radius:var(--r-btn);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.rl-input::placeholder{color:rgba(237,234,227,.42)}
.rl-input:focus{outline:none;border-color:var(--rl-orange);box-shadow:0 0 0 1px var(--rl-orange)}
textarea.rl-input{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.rl-form-actions{grid-column:1/-1;display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:8px}
.rl-form-actions .rl-btn{min-width:200px}
.rl-form-note{font-size:13px;color:rgba(237,234,227,.52)}

/* footer */
.rl-footer{background:var(--rl-ink);color:var(--rl-cream);padding:80px 0 32px}
.rl-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr}
.rl-footer-grid > div{padding:0 32px;border-left:1px solid rgba(237,234,227,.14)}
.rl-footer-grid > div:first-child{border-left:0;padding-left:0}
.rl-footer-grid > div:last-child{padding-right:0}
.rl-footer-logo{display:block;font-family:var(--font-serif);font-size:20px;color:#fff;margin-bottom:14px}
.rl-footer h4{font-family:var(--font-sans);font-size:15px;font-weight:600;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.rl-footer p{font-size:14px;line-height:2;color:rgba(237,234,227,.7)}
.rl-footer-brand p{max-width:300px}
.rl-footer-list a{font-size:14px;line-height:2.1;color:rgba(237,234,227,.7)}
.rl-footer-list a:hover{color:#fff}
.rl-footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(237,234,227,.14);
  font-size:13px;color:rgba(237,234,227,.5);
}

/* back to top */
.rl-top{
  position:fixed;right:28px;bottom:28px;z-index:900;
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  background:rgba(247,245,240,.94);border:1px solid var(--rl-line);border-radius:50%;
  color:var(--rl-ink);cursor:pointer;opacity:0;pointer-events:none;
  transform:translateY(8px);transition:opacity .24s ease,transform .24s ease;
}
.rl-top.is-visible{opacity:1;pointer-events:auto;transform:none}
.rl-top:hover{border-color:var(--rl-ink)}

/* reveal */
.rl-reveal{opacity:0;transform:translateY(12px);transition:opacity .48s cubic-bezier(.22,.61,.36,1),transform .48s cubic-bezier(.22,.61,.36,1)}
.rl-reveal.is-in{opacity:1;transform:none}

/* bootstrap overrides */
.btn:focus,.btn:focus-visible,.form-control:focus,.collapse.show ~ *,.accordion-button:focus{box-shadow:none}
.collapse:not(.show){display:none}
.collapsing{height:0;overflow:hidden;transition:height .3s ease}

@media (max-width:1199.98px){
  .rl-compare{gap:44px}
  .rl-compare + .rl-compare{margin-top:80px}
}
@media (max-width:991.98px){
  .rl-container{padding:0 28px}
  :root{--sp-section:80px}
  body{font-size:15.5px}
  .rl-burger{display:flex}
  .rl-menu{
    position:fixed;top:var(--rl-nav-h);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;justify-content:flex-start;
    max-height:calc(100vh - 72px);overflow:auto;
    padding:8px 28px 24px;background:var(--rl-paper);
    border-bottom:1px solid var(--rl-line);
    opacity:0;transform:translateY(-8px);pointer-events:none;
    transition:opacity .26s ease,transform .26s ease;
  }
  .rl-menu.is-open{opacity:1;transform:none;pointer-events:auto}
  .rl-menu li{border-bottom:1px solid var(--rl-line)}
  .rl-menu a{display:block;padding:16px 0;font-size:18px;color:var(--rl-ink);opacity:1}
  .rl-menu a::after{bottom:8px}
  .rl-menu a.is-active::after{bottom:8px}
  .rl-hero{padding:150px 0 56px}
  .rl-steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px 32px}
  .rl-notes{grid-template-columns:1fr;gap:20px}
  .rl-form{grid-template-columns:1fr 1fr}
  .rl-footer-grid{grid-template-columns:1fr 1fr;gap:40px 0}
  .rl-footer-grid > div:nth-child(odd){border-left:0;padding-left:0}
  .rl-footer-grid > div:nth-child(even){padding-right:0}
}
@media (max-width:767.98px){
  :root{--sp-section:56px}
  .rl-container{padding:0 20px}
  .rl-head{margin-bottom:36px}
  .rl-hero{padding:132px 0 48px}
  .rl-hero-lead{font-size:16px}
  .rl-anchors{gap:10px 20px;margin-top:32px}
  .rl-figures{margin-top:36px}
  .rl-figure{flex:1 1 100%;padding:18px 0 0 0;border-left:0 !important}
  .rl-figure + .rl-figure{border-top:1px solid rgba(237,234,227,.18);border-left:0}
  .rl-qgrid{grid-template-columns:1fr;gap:0}
  .rl-compare{grid-template-columns:1fr;gap:28px}
  .rl-compare--reverse .rl-compare-media{order:0}
  .rl-compare + .rl-compare{margin-top:64px}
  .rl-steps{grid-template-columns:1fr;gap:32px}
  .rl-faq-answer{padding-left:0}
  .rl-form{grid-template-columns:1fr;gap:20px}
  .rl-footer{padding:56px 0 28px}
  .rl-footer-grid{grid-template-columns:1fr;gap:32px}
  .rl-footer-grid > div{padding:0;border-left:0}
  .rl-footer-grid > div + div{border-top:1px solid rgba(237,234,227,.14);padding-top:24px}
  .rl-top{right:18px;bottom:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .rl-reveal{opacity:1 !important;transform:none !important}
}