/* roulang page: index */
:root{
  --primary:#1C6D96;
  --primary-deep:#114E6F;
  --primary-soft:#EAF3F8;
  --teal:#2FA3A0;
  --accent:#F0774A;
  --bg:#F6F9FB;
  --text:#162A38;
  --muted:#5C6F7E;
  --dark:#0E3D55;
  --line:rgba(18,61,89,.1);
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(16,42,60,.05),0 10px 28px rgba(16,52,78,.08);
  --shadow-hover:0 2px 4px rgba(16,42,60,.05),0 20px 44px rgba(16,52,78,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:1rem;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.cms-lock{overflow:hidden}
h1,h2,h3,h4,h5,h6{color:var(--text);margin-bottom:.8rem;line-height:1.3}
p{color:#3f5666;line-height:1.8;margin-bottom:1rem}
a{text-decoration:none;transition:color .25s ease,background .25s ease,border-color .25s ease,box-shadow .25s ease,transform .25s ease}
button{transition:all .2s ease}
img{max-width:100%;height:auto}
.btn{font-weight:600;letter-spacing:.01em;border-radius:var(--radius-sm);line-height:1.4}
.btn:focus-visible,.form-control:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid rgba(28,109,150,.5);outline-offset:2px;box-shadow:none}
.btn-accent{
  background:var(--accent);
  color:#fff;
  border:1px solid var(--accent);
  box-shadow:0 10px 24px rgba(240,119,74,.25);
}
.btn-accent:hover,.btn-accent:focus{
  background:#d85f34;
  border-color:#d85f34;
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 12px 28px rgba(240,119,74,.32);
}
.btn-outline-primary{
  background:#fff;
  border:1px solid var(--primary);
  color:var(--primary);
}
.btn-outline-primary:hover,.btn-outline-primary:focus{
  background:var(--primary-soft);
  border-color:var(--primary);
  color:var(--primary-deep);
  transform:translateY(-2px);
}
.btn-primary-solid{
  background:var(--primary);
  border:1px solid var(--primary);
  color:#fff;
}
.btn-primary-solid:hover{
  background:var(--primary-deep);
  border-color:var(--primary-deep);
  color:#fff;
  transform:translateY(-2px);
}
.btn-icon-arrow:after{
  content:"→";
  display:inline-block;
  margin-left:.35rem;
  transition:transform .2s ease;
}
.btn-icon-arrow:hover:after{transform:translateX(4px)}
.section-block{padding:clamp(4.5rem,8vw,7rem) 0;position:relative}
.container{max-width:1280px}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  background:var(--primary-soft);
  color:var(--primary-deep);
  font-size:.8125rem;
  font-weight:600;
  letter-spacing:.04em;
  padding:.4rem .9rem;
  border-radius:999px;
  margin-bottom:1rem;
}
.section-title{font-size:clamp(1.5rem,2vw + .75rem,2.3rem);font-weight:700;line-height:1.2;margin-bottom:1.2rem}
.section-desc{color:var(--muted);font-size:1.0625rem;max-width:640px}
.bg-soft{background:var(--primary-soft)}

/* ===== 导航 ===== */
.site-header{position:relative;z-index:1080}
.site-header .navbar{
  position:fixed;
  top:0;left:0;right:0;
  min-height:72px;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  padding:0;
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header .navbar.scrolled{
  background:rgba(255,255,255,.98);
  box-shadow:0 6px 20px rgba(16,42,60,.08);
}
.site-header .navbar .container{display:flex;align-items:center;justify-content:space-between;min-height:72px;flex-wrap:nowrap}
.navbar-brand{margin:0;display:inline-flex;align-items:center;gap:.6rem;max-width:320px}
.navbar-brand .brand-mark{
  width:42px;height:42px;min-width:42px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary);
  color:#fff;
  border-radius:12px;
  font-size:1.1rem;
  font-weight:800;
  letter-spacing:.02em;
  box-shadow:0 4px 12px rgba(28,109,150,.2);
}
.navbar-brand .logo-main{
  display:block;
  font-size:1.03rem;
  font-weight:800;
  color:var(--primary-deep);
  line-height:1.25;
  white-space:nowrap;
}
.navbar-brand .logo-sub{display:block;font-size:.75rem;color:var(--muted);font-weight:400;line-height:1.2;margin-top:2px}
.navbar-toggler{
  border:0;
  padding:6px;
  border-radius:10px;
}
.navbar-toggler:focus{box-shadow:0 0 0 .2rem rgba(28,109,150,.1)}
.navbar-toggler-icon{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231C6D96' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e")}
.navbar-nav{gap:.2rem}
.navbar-nav .nav-link{
  color:var(--text);
  font-size:.9375rem;
  font-weight:500;
  padding:.5rem .95rem!important;
  border-radius:10px;
  position:relative;
}
.navbar-nav .nav-link:hover{color:var(--primary);background:rgba(28,109,150,.04)}
.navbar-nav .nav-link.active{
  color:var(--primary);
  font-weight:700;
}
.navbar-nav .nav-link.active::after{
  content:"";
  position:absolute;
  left:.95rem;right:.95rem;bottom:.1rem;
  height:2px;
  background:var(--primary);
  border-radius:2px;
}
.nav-actions{display:inline-flex;align-items:center;gap:.5rem}
.nav-cta-badge{
  background:var(--primary);
  color:#fff;
  font-size:.75rem;
  font-weight:700;
  border-radius:999px;
  padding:.3rem .8rem;
  white-space:nowrap;
}
.navbar-cta{
  border-radius:999px;
  padding:.55rem 1.2rem;
  font-size:.875rem;
  box-shadow:0 6px 16px rgba(240,119,74,.2);
  white-space:nowrap;
}
@media(max-width:991.98px){
  .site-header .navbar .container{flex-wrap:wrap;min-height:64px;padding-top:.4rem;padding-bottom:.4rem}
  .site-header .navbar .container > .navbar-brand{order:1}
  .site-header .navbar .container > .nav-actions{order:3}
  #navContent{
    order:4;
    width:100%;
    flex-basis:100%;
  }
  .navbar-collapse{padding:.8rem .2rem .6rem;border-top:1px solid var(--line);margin-top:.2rem}
  .navbar-nav .nav-link{padding:.65rem 1rem!important;font-size:1rem}
  .navbar-nav .nav-link.active::after{left:1rem;right:auto;width:22px;bottom:.35rem}
}

/* ===== Hero 首页 ===== */
.hero-section{
  position:relative;
  overflow:hidden;
  padding-top:clamp(7.5rem,10vw,9.5rem);
  padding-bottom:clamp(4rem,7vw,6rem);
  background:linear-gradient(180deg,#f2f8fb 0%,#F6F9FB 100%);
  border-bottom:1px solid var(--line);
}
.hero-section:before,.hero-section:after{
  content:"";
  position:absolute;
  border-radius:50%;
  pointer-events:none;
}
.hero-section:before{
  width:420px;height:420px;
  left:-140px;top:-80px;
  background:radial-gradient(circle,rgba(47,163,160,.16) 0%,rgba(47,163,160,0) 68%);
}
.hero-section:after{
  width:520px;height:520px;
  right:-180px;bottom:-120px;
  background:radial-gradient(circle,rgba(28,109,150,.14) 0%,rgba(28,109,150,0) 70%);
}
.hero-wrap .container{position:relative;z-index:2}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  background:#fff;
  border:1px solid rgba(28,109,150,.16);
  color:var(--primary-deep);
  font-weight:600;
  font-size:.875rem;
  border-radius:999px;
  padding:.45rem 1rem;
  box-shadow:0 4px 12px rgba(16,52,78,.04);
}
.hero-tag i{color:var(--teal)}
.hero-title{
  font-size:clamp(2rem,3.6vw + 1rem,3.4rem);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.02em;
  margin:.9rem 0 1.3rem;
}
.hero-title .text-highlight{position:relative;color:var(--primary);white-space:nowrap;z-index:1}
.hero-subtitle{
  color:#40586b;
  font-size:1.0625rem;
  max-width:560px;
  margin-bottom:2rem;
}
.hero-subtitle strong{color:var(--primary-deep);font-weight:700}
.hero-action{display:flex;flex-wrap:wrap;gap:.9rem;margin-bottom:2.2rem}
.hero-trust{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.8rem 2.2rem;
  padding-top:1.2rem;
  border-top:1px solid var(--line);
}
.trust-item{display:flex;align-items:center;gap:.55rem;font-size:.875rem;color:#465c6c}
.trust-item i{font-size:1rem;color:var(--teal)}
.trust-item b{font-weight:800;color:var(--primary-deep);font-variant-numeric:tabular-nums}
.hero-visual{position:relative}
.hero-media{
  position:relative;
  border-radius:24px;
  overflow:hidden;
  box-shadow:0 30px 70px rgba(16,52,78,.2);
  transform:rotate(1.2deg);
}
.hero-media img{width:100%;height:auto;display:block;object-fit:cover;min-height:360px}
.hero-media:after{
  content:"";
  position:absolute;inset:0;
  border:1px solid rgba(255,255,255,.4);
  border-radius:24px;
  pointer-events:none;
}
.floating-card{
  position:absolute;
  background:#fff;
  border-radius:14px;
  box-shadow:0 12px 28px rgba(16,52,78,.16);
  padding:.8rem 1rem;
  font-size:.8125rem;
  display:flex;
  align-items:center;
  gap:.6rem;
  max-width:230px;
  z-index:3;
}
.floating-card .fc-icon{
  width:34px;height:34px;min-width:34px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-soft);
  color:var(--teal);
  border-radius:10px;
  font-size:.95rem;
}
.floating-card strong{display:block;color:var(--text);font-size:.855rem;line-height:1.3}
.floating-card span{color:var(--muted);font-size:.77rem;line-height:1.35}
.floating-card.fc-top{top:1.5rem;left:-1.1rem;animation:floatI 4s ease-in-out infinite}
.floating-card.fc-bottom{bottom:1.7rem;right:-1rem;animation:floatI 4.6s ease-in-out .6s infinite}
@keyframes floatI{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-8px)}
}
.hero-scroll{
  position:absolute;
  bottom:-3rem;
  left:50%;
  transform:translateX(-50%);
  color:var(--muted);
  font-size:.8rem;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:.3rem;
}
.hero-scroll i{font-size:.9rem;animation:bounceDown 2s infinite}
@keyframes bounceDown{0%,100%{transform:translateY(0);opacity:.7}50%{transform:translateY(6px);opacity:1}}
@media(max-width:991.98px){
  .hero-section{padding-top:7rem}
  .hero-visual{margin-top:2rem}
  .floating-card.fc-top{left:.5rem}
  .floating-card.fc-bottom{right:.5rem}
}

/* ===== 平台卖点 ===== */
.features-section{background:#fff}
.feature-lead{position:sticky;top:110px}
.feature-lead .link-more{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  color:var(--primary);
  font-weight:600;
  font-size:.9375rem;
}
.feature-lead .link-more:hover{color:var(--teal);gap:.6rem}
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.feature-card{
  background:#fff;
  border:1px solid rgba(28,109,150,.1);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:1.6rem 1.5rem;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
  position:relative;
  height:100%;
}
.feature-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(28,109,150,.2);
}
.feature-card .feature-icon{
  width:46px;height:46px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-soft);
  color:var(--teal);
  border-radius:12px;
  font-size:1.2rem;
  margin-bottom:1rem;
}
.feature-card h3{font-size:1.125rem;font-weight:700;margin-bottom:.6rem}
.feature-card p{font-size:.9375rem;color:var(--muted);margin-bottom:0}
.feature-card .feature-caption{
  font-size:.8125rem;
  color:#7a8d9b;
  margin-top:.9rem;
  padding-top:.7rem;
  border-top:1px dashed rgba(18,61,89,.12);
}
@media(max-width:991.98px){
  .feature-lead{position:static;margin-bottom:1.5rem}
}
@media(max-width:575.98px){
  .feature-grid{grid-template-columns:1fr;gap:16px}
  .feature-card{padding:1.25rem}
}

/* ===== 使用演示 ===== */
.demo-section{background:var(--bg);overflow:hidden}
.browser-mock{
  background:#fff;
  border-radius:20px;
  border:1px solid rgba(16,52,78,.12);
  box-shadow:0 24px 60px rgba(16,52,78,.14);
  overflow:hidden;
}
.browser-bar{
  display:flex;
  align-items:center;
  gap:.55rem;
  padding:.9rem 1rem;
  background:#f8fbfd;
  border-bottom:1px solid var(--line);
}
.browser-dot{width:11px;height:11px;border-radius:50%;flex:0 0 auto}
.browser-dot.red{background:#e56d6d}
.browser-dot.yellow{background:#e8b85a}
.browser-dot.green{background:#4dbd8f}
.browser-address{
  flex:1;
  background:#eef4f8;
  border-radius:8px;
  font-size:.78rem;
  color:#5b7486;
  padding:.32rem .8rem;
  display:flex;
  align-items:center;
  gap:.4rem;
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
}
.browser-view{background:#dde8ef;padding:.7rem;min-height:300px}
.browser-screen{
  border-radius:14px;
  overflow:hidden;
  background:#fff;
  border:1px solid rgba(16,52,78,.08);
}
.browser-screen img{width:100%;display:block;object-fit:cover;max-height:420px;min-height:220px}
.browser-note{
  display:flex;
  align-items:flex-start;
  gap:.8rem;
  background:#fff;
  border-radius:14px;
  box-shadow:var(--shadow);
  padding:.9rem 1rem;
  margin:.8rem .6rem 0;
  font-size:.8rem;
}
@media(max-width:767.98px){
  .browser-view{padding:.35rem}
  .browser-address{font-size:.68rem}
}
.step-list{
  list-style:none;
  margin:0;
  padding:0;
}
.step-list li{
  display:flex;
  gap:1rem;
  padding:1.2rem 0;
  border-bottom:1px dashed rgba(18,61,89,.12);
  position:relative;
}
.step-list li:last-child{border-bottom:0}
.step-num{
  width:34px;height:34px;
  min-width:34px;
  background:var(--primary-soft);
  color:var(--primary);
  font-weight:800;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:.9rem;
}
.step-list h3{font-size:1.0625rem;font-weight:700;margin-bottom:.25rem}
.step-list p{font-size:.875rem;color:var(--muted);margin:0}

/* ===== 证据与评价 ===== */
.proof-section{background:#fff}
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fbfdff;
  overflow:hidden;
  margin-bottom:3.4rem;
}
.stat-cell{
  padding:1.4rem 1rem;
  text-align:center;
  border-left:1px solid var(--line);
}
.stat-cell:first-child{border-left:0}
.stat-cell .stat-num{
  font-size:clamp(1.6rem,2vw + .5rem,2.2rem);
  font-weight:800;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat-cell .stat-label{color:var(--muted);font-size:.8125rem;margin-top:.3rem}
.review-avatar{
  width:46px;height:46px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:1.1rem;
  color:var(--white);
  flex:0 0 auto;
}
.avatar-a{background:#1C6D96}
.avatar-b{background:#2FA3A0}
.avatar-c{background:#e8a04c}
.quote-card{
  background:#fff;
  border:1px solid rgba(28,109,150,.1);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:1.5rem;
  transition:transform .3s ease,box-shadow .3s ease;
}
.quote-card:hover{box-shadow:var(--shadow-hover)}
.quote-card .quote-icon{color:rgba(47,163,160,.35);font-size:1.25rem}
.quote-card p{font-size:.95rem;color:#334b5c;margin:.8rem 0 1rem}
.review-person{display:flex;align-items:center;gap:.8rem}
.review-person .person-name{font-weight:700;color:var(--text);font-size:.9375rem}
.review-person .person-desc{font-size:.78rem;color:var(--muted)}
.scene-card{
  background:linear-gradient(135deg,#EAF3F8 0%,#f6fafd 100%);
  border:1px solid rgba(28,109,150,.15);
  border-radius:var(--radius);
  padding:1.6rem;
  height:100%;
}
.scene-card h3{font-size:1.125rem;color:var(--primary-deep)}
.scene-card p{font-size:.925rem}
@keyframes avatarFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}
.review-avatar{animation:avatarFloat 5s ease-in-out infinite}
.avatar-b{animation-delay:.4s}
.avatar-c{animation-delay:.9s}

/* ===== 资讯动态 ===== */
.news-section{background:#F6F9FB}
.news-topic-tabs{
  display:flex;
  flex-wrap:wrap;
  gap:.4rem;
  justify-content:flex-end;
}
.chip{
  display:inline-flex;
  align-items:center;
  font-size:.78rem;
  color:var(--primary);
  background:#fff;
  border:1px solid rgba(28,109,150,.16);
  padding:.3rem .8rem;
  border-radius:999px;
  margin-left:.2rem;
}
@media(max-width:991.98px){
  .news-topic-tabs{justify-content:flex-start;margin-top:.5rem}
}
.news-feature{
  background:#fff;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease;
  border:1px solid rgba(28,109,150,.08);
  display:flex;
  height:100%;
}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.news-feature .row{width:100%}
.news-feature-pic{height:100%;min-height:220px;overflow:hidden;position:relative}
.news-feature-pic img{width:100%;height:100%;object-fit:cover;display:block}
.news-feature-pic:after{
  content:"";
  position:absolute;
  bottom:0;left:0;right:0;
  height:60%;
  background:linear-gradient(180deg,rgba(14,61,85,0),rgba(14,61,85,.45));
}
.news-feature main-feature-card:hover .news-feature-pic img{transform:scale(1.03)}
.news-feature-content{padding:1.6rem 1.5rem;display:flex;flex-direction:column;justify-content:center}
.news-feature-tag{
  display:inline-flex;
  align-self:flex-start;
  background:var(--primary-soft);
  color:var(--primary-deep);
  font-size:.75rem;
  font-weight:700;
  padding:.25rem .8rem;
  border-radius:999px;
  margin-bottom:.8rem;
}
.news-feature-content h3{font-size:1.4rem;font-weight:700;line-height:1.45;margin-bottom:.6rem}
.news-feature-content h3 a{color:var(--text)}
.news-feature-content h3 a:hover{color:var(--primary)}
.news-feature-summary{color:var(--muted);font-size:.9375rem}
.news-feature-meta{display:flex;gap:1rem;color:#7b8c9a;font-size:.8rem;margin-top:1rem}
.news-feature-link{
  margin-top:.8rem;
  color:var(--primary);
  font-weight:600;
  font-size:.875rem;
  display:inline-flex;
  align-items:center;
  gap:.3rem;
}
.news-feature-link:hover{color:var(--teal)}
.featured-date{
  display:inline-flex;
  align-items:center;
  gap:.3rem;
}
.news-mini-card{
  background:#fff;
  border:1px solid rgba(28,109,150,.1);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  height:100%;
  display:flex;
  flex-direction:column;
  transition:transform .3s ease,box-shadow .3s ease;
}
.news-mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.news-mini-thumb{height:116px;overflow:hidden;display:block;position:relative;background:#DDE8EF}
.news-mini-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s ease}
.news-mini-card:hover .news-mini-thumb img{transform:scale(1.05)}
.news-mini-body{padding:1rem 1.1rem 1.2rem;display:flex;flex-direction:column;flex:1}
.news-tag{
  display:inline-flex;
  background:var(--primary-soft);
  color:var(--primary-deep);
  font-size:.72rem;
  font-weight:700;
  padding:.18rem .65rem;
  border-radius:999px;
  align-self:flex-start;
  margin-bottom:.5rem;
}
.news-mini-title{font-size:1rem;line-height:1.45;font-weight:700;margin-bottom:.45rem}
.news-mini-title a{color:var(--text)}
.news-mini-title a:hover{color:var(--primary)}
.news-mini-summary{font-size:.85rem;color:var(--muted);line-height:1.65;flex:1}
.news-mini-meta{color:#8aa0ae;font-size:.75rem;display:flex;gap:.5rem;align-items:center;margin-top:.6rem}
.empty-list-box{
  border:1.5px dashed rgba(28,109,150,.25);
  background:#fff;
  border-radius:var(--radius);
  padding:3rem 1rem;
  margin-top:1rem;
  text-align:center;
}
.empty-list-box .empty-icon{
  width:44px;height:44px;margin:0 auto .6rem;
  background:#eef5f9;
  color:var(--muted);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:1.1rem;
}
.empty-list-box p{color:var(--muted);font-size:.875rem;margin:0}

/* ===== 服务价格 ===== */
.pricing-section{background:#fff}
.pricing-side h3{font-size:1.5rem;font-weight:700}
.pricing-side .feature-note{color:var(--muted)}
.price-card{
  background:#fff;
  border-radius:20px;
  border:1px solid rgba(28,109,150,.12);
  box-shadow:var(--shadow);
  padding:1.5rem;
  transition:all .3s ease;
  position:relative;
}
.price-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.price-card .plan-name{font-size:1.05rem;font-weight:700;color:var(--primary-deep)}
.price-card .plan-price{margin-top:1rem;display:flex;align-items:baseline}
.price-card .plan-price .price-num{
  font-size:1.8rem;
  font-weight:800;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
}
.price-card .plan-price .price-unit{color:var(--muted);font-size:.8125rem;margin-left:.3rem}
.price-card.popular{
  border-color:var(--primary);
  box-shadow:0 0 0 2px rgba(28,109,150,.14),var(--shadow);
  background:#fff;
  transform:translateY(-8px);
}
.price-card.popular .popular-label{
  position:absolute;
  top:-10px;
  left:1rem;
  background:var(--accent);
  color:#fff;
  font-size:.72rem;
  font-weight:700;
  padding:.2rem .7rem;
  border-radius:999px;
  box-shadow:0 4px 10px rgba(240,119,74,.25);
}
.price-card .btn{width:100%;margin-top:1.3rem}
.plan-list{
  list-style:none;
  margin:1.5rem 0 0;
  padding:0;
}
.plan-list li{
  display:flex;
  align-items:flex-start;
  gap:.6rem;
  padding:.42rem 0;
  font-size:.875rem;
  color:#445a69;
}
.plan-list li i{color:var(--teal);margin-top:.22rem;font-size:.85rem}
.price-note{
  background:var(--primary-soft);
  border-radius:14px;
  padding:1rem 1.2rem;
  margin-top:1.5rem;
  color:var(--primary-deep);
  font-size:.85rem;
}
@media(min-width:768px) and (max-width:991.98px){
  .pricing-cards .col-md-6{margin-bottom:1rem}
}
@media(max-width:575.98px){
  .price-card.popular{transform:none;margin-top:1rem}
}

/* ===== FAQ ===== */
.faq-section{background:var(--bg)}
.faq-sticky{position:sticky;top:110px}
.faq-card{
  background:#fff;
  border:1px solid rgba(28,109,150,.08);
  border-radius:var(--radius);
  overflow:hidden;
  margin-bottom:.7rem;
  box-shadow:0 4px 16px rgba(16,52,78,.05);
}
.faq-card:last-child{margin-bottom:0}
.faq-card .accordion-item{background:#fff;border:0;border-radius:0}
.faq-card .accordion-button{
  font-weight:600;
  background:#fff;
  color:var(--text);
  font-size:1rem;
  padding:1.05rem 1.25rem;
  border-left:3px solid transparent;
  transition:all .25s ease;
}
.faq-card .accordion-button:hover{background:#f8fbfe;color:var(--primary)}
.faq-card .accordion-button:not(.collapsed){
  background:#fff;
  color:var(--primary-deep);
  border-left-color:var(--primary);
  box-shadow:none;
}
.faq-card .accordion-button:focus{box-shadow:none}
.faq-card .accordion-button .question-icon{
  width:26px;height:26px;
  margin-right:.7rem;
  border-radius:50%;
  font-size:.72rem;
  color:var(--primary);
  background:var(--primary-soft);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
}
.faq-card .accordion-body{
  background:#fff;
  color:#465e6e;
  font-size:.9375rem;
  padding:0 3.4rem 1rem 3.4rem;
}
.faq-card .accordion-button::after{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232FA3A0'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e")}
.faq-help{
  background:#fff;
  border:1px dashed rgba(28,109,150,.25);
  border-radius:var(--radius);
  padding:1.2rem;
  margin-top:1.4rem;
}
.faq-help strong{color:var(--primary-deep)}

/* ===== 最终转化 ===== */
.final-cta{
  background:var(--dark);
  background-image:radial-gradient(circle at 15% 20%,rgba(47,163,160,.15) 0,transparent 34%),radial-gradient(circle at 85% 75%,rgba(240,119,74,.15) 0,transparent 40%);
  color:#fff;
  position:relative;
  overflow:hidden;
  border-radius:0;
}
.cta-content .section-eyebrow{background:rgba(255,255,255,.1);color:#d7ecfb}
.cta-content h2{color:#fff;font-weight:800}
.cta-content p{color:rgba(255,255,255,.75)}
.cta-points{display:flex;flex-wrap:wrap;gap:1rem;list-style:none;margin:1.3rem 0 0;padding:0}
.cta-points li{
  width:auto;
  background:rgba(255,255,255,.1);
  color:#fff;
  font-size:.85rem;
  font-weight:600;
  border-radius:999px;
  padding:.4rem 1rem;
  display:inline-flex;
  align-items:center;
  gap:.4rem;
}
.cta-form-card{
  background:#fff;
  border-radius:20px;
  box-shadow:0 24px 60px rgba(0,0,0,.18);
  padding:1.8rem;
}
.form-label{font-weight:600;font-size:.85rem;color:var(--text)}
.form-control,.form-select{
  border:1px solid rgba(18,61,89,.16);
  border-radius:12px;
  padding:.62rem .9rem;
  font-size:.9125rem;
  background:#fbfdff;
  transition:border .2s ease,box-shadow .2s ease,background .2s ease;
}
.form-control:focus,.form-select:focus{
  background:#fff;
  border-color:var(--primary);
  box-shadow:0 0 0 .2rem rgba(28,109,150,.12);
}
textarea.form-control{min-height:92px}
.form-success{
  display:flex;
  align-items:center;
  gap:.5rem;
  background:#e8f7f1;
  color:#1d7a5d;
  border:1px solid #b7e3d0;
  border-radius:12px;
  padding:.7rem .9rem;
  font-size:.875rem;
  margin-top:1rem;
}
.final-cta .form-select{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%235C6F7E'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e")}

/* ===== Footer ===== */
.site-footer{
  background:#f7fafc;
  border-top:1px solid var(--line);
  padding-top:4rem;
}
.footer-brand .logo-main{color:var(--primary-deep);font-weight:800;font-size:1.2rem;white-space:nowrap}
.footer-heading{font-weight:700;color:var(--text);font-size:.95rem;margin-bottom:1rem}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:.5rem}
.footer-links a{color:#465e6e;font-size:.875rem}
.footer-links a:hover{color:var(--teal);padding-left:3px}
.footer-contact{color:#465e6e;font-size:.9rem}
.footer-contact i{color:var(--primary);width:20px;margin-right:.3rem}
.footer-bottom{
  border-top:1px solid var(--line);
  margin-top:2.4rem;
  padding:1.4rem 0;
  font-size:.8rem;
  color:var(--muted);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:.8rem;
}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--primary)}

/* ===== 浮动Cta ===== */
.floating-cta-group{
  position:fixed;
  right:1.4rem;
  bottom:1.4rem;
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:.7rem;
  z-index:1100;
}
.float-main{
  background:#fff;
  border:1px solid rgba(28,109,150,.25);
  color:var(--primary);
  padding:.85rem 1.35rem;
  border-radius:999px;
  font-weight:700;
  font-size:.875rem;
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  box-shadow:0 10px 24px rgba(16,52,78,.16);
  transition:all .25s ease;
}
.float-main:hover{
  background:var(--accent);
  color:#fff;
  border-color:var(--accent);
  transform:translateY(-4px);
}
.float-top{
  background:#fff;
  border:1px solid var(--line);
  width:44px;height:44px;
  border-radius:50%;
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 8px 18px rgba(16,52,78,.12);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
}
.float-top.show{opacity:1;visibility:visible;pointer-events:auto}
.float-top:hover{background:var(--primary);color:#fff;transform:translateY(-3px)}
.float-top i{font-size:.9rem}

/* ===== 辅助图片与响应式 ===== */
.img-frame{border-radius:20px;overflow:hidden}
.back-img-card{
  border-radius:20px;
  overflow:hidden;
  position:relative;
}
.back-img-card img{width:100%;height:100%;object-fit:cover;min-height:180px}
.bg-pattern-dots{
  background-image:radial-gradient(rgba(18,61,89,.08) 1px,transparent 1px);
  background-size:22px 22px;
}

@media(max-width:991.98px){
  .navbar-brand .logo-sub{display:none}
  .stat-strip{grid-template-columns:repeat(2,1fr);row-gap:1px}
  .stat-cell:nth-child(2){border-left:0}
  .stat-cell:nth-child(n+3){border-top:1px solid var(--line)}
}
@media(max-width:575.98px){
  .navbar-brand .logo-main{font-size:.93rem;white-space:normal}
  .navbar-brand{max-width:210px}
  .hero-title{letter-spacing:0}
  .btn-accent,.btn-outline-primary{width:100%}
  .hero-action .btn{width:auto}
  .stat-cell{padding:1.1rem .5rem}
  .stat-cell .stat-num{font-size:1.5rem}
  .floating-cta-group{right:.9rem;bottom:.9rem}
  .float-main{padding:.65rem 1rem;font-size:.8rem}
  .news-feature-content{padding:1.1rem}
}

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --brand-primary: #1C6D96;
            --brand-primary-deep: #114E6F;
            --brand-primary-light: #EAF3F8;
            --brand-aqua: #2FA3A0;
            --brand-accent: #F0774A;
            --brand-bg: #F6F9FB;
            --brand-white: #FFFFFF;
            --brand-text: #162A38;
            --brand-text-weak: #5C6F7E;
            --brand-border: rgba(18, 61, 89, 0.1);
            --brand-dark: #0E3D55;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-img: 20px;
            --shadow-card: 0 1px 2px rgba(16, 42, 60, .05), 0 10px 28px rgba(16, 52, 78, .08);
            --shadow-card-hover: 0 2px 4px rgba(16, 42, 60, .06), 0 20px 44px rgba(16, 52, 78, .14);
            --shadow-accent: 0 10px 24px rgba(240, 119, 74, .25);
            --font-stack: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --section-space: clamp(4.5rem, 8vw, 7rem);
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after { box-sizing: border-box; margin: 0; padding: 0; }

        html { scroll-behavior: smooth; }

        body {
            font-family: var(--font-stack);
            background-color: var(--brand-bg);
            color: var(--brand-text);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

        img { max-width: 100%; height: auto; }
        a { color: var(--brand-primary); text-decoration: none; transition: color .2s ease; }
        a:hover { color: var(--brand-aqua); }
        ul, ol { padding-left: 1.2rem; }

        /* ===== Container ===== */
        .container-main {
            max-width: 1320px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .container-main { padding-left: 16px; padding-right: 16px; }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(246, 249, 251, .94);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--brand-border);
        }

        .site-header .navbar { min-height: 72px; padding-top: .5rem; padding-bottom: .5rem; }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: .7rem;
            margin-right: 1rem;
            padding: 0;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: var(--brand-primary);
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            border-radius: 12px;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(28, 109, 150, .2);
        }

        .logo-main {
            display: block;
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--brand-text);
            line-height: 1.2;
            white-space: nowrap;
        }

        .logo-sub {
            display: block;
            font-size: .72rem;
            color: var(--brand-text-weak);
            letter-spacing: .02em;
        }

        .navbar-nav { gap: .25rem; }
        .navbar-nav .nav-link {
            padding: .45rem .9rem;
            font-size: .95rem;
            font-weight: 500;
            color: var(--brand-text) !important;
            border-radius: 8px;
            position: relative;
            transition: color .2s ease, background .2s ease;
        }

        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--brand-primary);
            border-radius: 2px;
            transition: width .25s ease;
        }

        .navbar-nav .nav-link:hover { color: var(--brand-primary) !important; background: var(--brand-primary-light); }
        .navbar-nav .nav-link:hover::after { width: 18px; }

        .navbar-nav .nav-link.active {
            color: var(--brand-primary) !important;
            font-weight: 600;
        }

        .navbar-nav .nav-link.active::after { width: 22px; }

        .nav-actions { display: flex; align-items: center; gap: .5rem; }

        .btn-accent {
            background-color: var(--brand-accent) !important;
            color: #fff !important;
            border: none;
            border-radius: var(--radius-btn);
            padding: .55rem 1.4rem;
            font-size: .92rem;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(240, 119, 74, .2);
            transition: all .25s ease;
        }

        .btn-accent:hover {
            background-color: #e05f33 !important;
            color: #fff !important;
            transform: translateY(-2px);
            box-shadow: var(--shadow-accent);
        }

        .btn-accent:focus-visible {
            outline: 3px solid rgba(240, 119, 74, .4);
            outline-offset: 2px;
        }

        .btn-outline-light {
            border-color: rgba(255,255,255,.4);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: .5rem 1.25rem;
            font-size: .9rem;
            transition: all .25s ease;
        }

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

        .navbar-toggler { border: 1px solid var(--brand-border); padding: .35rem .55rem; }
        .navbar-toggler:focus { box-shadow: none; border-color: var(--brand-primary); }
        .navbar-toggler-icon { background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(22,42,56,.75)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E"); }

        @media (max-width: 991.98px) {
            .site-header .navbar { min-height: 64px; }
            .navbar-nav { padding: .75rem 0; gap: 0; }
            .navbar-nav .nav-link { padding: .55rem .6rem; font-size: .95rem; }
            .navbar-nav .nav-link::after { display: none; }
            .navbar-collapse { background: var(--brand-white); border: 1px solid var(--brand-border); border-radius: 12px; padding: .5rem .75rem; margin-top: .4rem; box-shadow: var(--shadow-card); }
            .nav-actions .btn-accent.d-lg-none { border-radius: 999px !important; padding: .45rem 1rem !important; font-size: .82rem !important; }
        }

        @media (max-width: 520px) {
            .logo-main { font-size: .9rem; }
            .logo-sub { font-size: .62rem; }
            .brand-mark { width: 34px; height: 34px; font-size: .9rem; border-radius: 10px; }
        }

        /* ===== Article Page Layout ===== */
        .article-page-top {
            background: linear-gradient(135deg, var(--brand-primary-light) 0%, #f0f7fb 100%);
            padding: 3.2rem 0 2.4rem;
            border-bottom: 1px solid var(--brand-border);
            position: relative;
            overflow: hidden;
        }

        .article-page-top::after {
            content: "";
            position: absolute;
            top: -40px;
            right: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(47, 163, 160, .08);
        }

        .article-page-top .container { position: relative; z-index: 2; }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: .35rem;
            font-size: .85rem;
            margin-bottom: 1.25rem;
            color: var(--brand-text-weak);
        }

        .breadcrumb-custom a { color: var(--brand-text-weak); transition: color .2s ease; }
        .breadcrumb-custom a:hover { color: var(--brand-primary); }
        .breadcrumb-custom .sep { color: rgba(22,42,56,.3); margin: 0 .1rem; }
        .breadcrumb-custom .current { color: var(--brand-primary); font-weight: 600; max-width: 200px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: inline-block; vertical-align: bottom; }

        .article-meta-line {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 1.2rem;
            padding: .65rem 0;
            color: var(--brand-text-weak);
            font-size: .88rem;
            border-bottom: 1px solid var(--brand-border);
        }

        .article-meta-line .item { display: inline-flex; align-items: center; gap: .4rem; }
        .article-meta-line i { color: var(--brand-aqua); font-size: .82rem; }

        .article-category-badge {
            display: inline-block;
            background: var(--brand-primary-light);
            color: var(--brand-primary);
            font-size: .75rem;
            font-weight: 600;
            padding: .2rem .7rem;
            border-radius: 999px;
            margin-bottom: .9rem;
            letter-spacing: .02em;
        }

        .article-h1 {
            font-size: clamp(1.7rem, 2.6vw + .9rem, 2.6rem);
            line-height: 1.28;
            font-weight: 700;
            color: var(--brand-text);
            margin: .6rem 0 1rem;
            letter-spacing: -.01em;
        }

        .article-sub-desc {
            font-size: .98rem;
            line-height: 1.7;
            color: var(--brand-text-weak);
            max-width: 800px;
        }

        /* ===== Article Body ===== */
        .article-section { padding: var(--section-space) 0; }

        .article-main {
            max-width: 100%;
        }

        .article-card-box {
            background: var(--brand-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--brand-border);
            box-shadow: var(--shadow-card);
            padding: clamp(1.5rem, 3vw, 2.8rem);
            margin-bottom: 2rem;
        }

        .article-cover {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
            border-radius: var(--radius-img);
            margin-bottom: 2rem;
            display: block;
            box-shadow: 0 10px 30px rgba(16, 52, 78, .1);
        }

        .cover-placeholder {
            width: 100%;
            height: 300px;
            background: var(--brand-primary-light);
            border-radius: var(--radius-img);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 2rem;
            color: var(--brand-primary);
            font-size: 1rem;
            font-weight: 500;
        }

        /* Article rich text styles */
        .article-content {
            font-size: 1.02rem;
            line-height: 1.85;
            color: var(--brand-text);
        }

        .article-content > * { margin-bottom: 1.35rem; }

        .article-content h2 {
            font-size: clamp(1.3rem, 1.5vw + .7rem, 1.75rem);
            font-weight: 700;
            color: var(--brand-text);
            margin-top: 2.2rem;
            margin-bottom: 1rem;
            padding-bottom: .45rem;
            border-bottom: 2px solid var(--brand-primary-light);
            letter-spacing: -.01em;
        }

        .article-content h3 {
            font-size: 1.18rem;
            font-weight: 600;
            color: var(--brand-text);
            margin-top: 1.8rem;
            margin-bottom: .85rem;
        }

        .article-content p { color: #2A3D4C; }

        .article-content a { color: var(--brand-primary); text-decoration: underline; text-underline-offset: 3px; }
        .article-content a:hover { color: var(--brand-aqua); }

        .article-content blockquote {
            border-left: 4px solid var(--brand-primary);
            background: var(--brand-primary-light);
            padding: 1rem 1.4rem;
            border-radius: 0 var(--radius-btn) var(--radius-btn) 0;
            margin: 1.6rem 0;
            color: var(--brand-text);
            font-size: .95rem;
        }

        .article-content ul,
        .article-content ol { padding-left: 1.4rem; margin-bottom: 1.35rem; }

        .article-content ul li,
        .article-content ol li { margin-bottom: .5rem; line-height: 1.75; }

        .article-content ul li::marker { color: var(--brand-aqua); }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            font-size: .92rem;
            line-height: 1.5;
            margin-bottom: 1.6rem;
        }

        .article-content table th {
            background: var(--brand-primary-light);
            color: var(--brand-text);
            font-weight: 600;
            border: 1px solid var(--brand-border);
            padding: .65rem 1rem;
            text-align: left;
        }

        .article-content table td {
            border: 1px solid var(--brand-border);
            padding: .6rem 1rem;
        }

        .article-content img {
            border-radius: var(--radius-img);
            margin: 1.6rem 0;
        }

        .article-content figcaption {
            font-size: .82rem;
            color: var(--brand-text-weak);
            text-align: center;
            margin-top: -0.8rem;
            margin-bottom: 1.4rem;
        }

        .table-responsive-wrap { overflow-x: auto; }

        /* Article Tags */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: .55rem;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--brand-border);
        }

        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            background: var(--brand-primary-light);
            color: var(--brand-primary);
            font-size: .8rem;
            font-weight: 500;
            padding: .3rem .8rem;
            border-radius: 999px;
            transition: all .2s ease;
        }

        .tag-pill i { font-size: .75rem; }

        .tag-pill:hover {
            background: var(--brand-aqua);
            color: #fff;
            transform: translateY(-1px);
        }

        /* Post Navigation */
        .post-nav {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            margin-top: 1.8rem;
        }

        .post-nav-item {
            background: var(--brand-primary-light);
            border: 1px solid var(--brand-border);
            border-radius: 14px;
            padding: 1.1rem;
            display: flex;
            align-items: center;
            gap: .8rem;
            transition: all .25s ease;
        }

        .post-nav-item:hover {
            background: var(--brand-white);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: rgba(28, 109, 150, .25);
        }

        .post-nav-item.next { text-align: right; justify-content: flex-end; }

        .post-nav-label {
            font-size: .76rem;
            color: var(--brand-text-weak);
            display: block;
            margin-bottom: .25rem;
        }

        .post-nav-title {
            font-size: .9rem;
            font-weight: 600;
            color: var(--brand-text);
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .post-nav-icon {
            width: 38px;
            height: 38px;
            background: var(--brand-white);
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-primary);
            flex-shrink: 0;
            font-size: .88rem;
        }

        @media (max-width: 576px) {
            .post-nav { grid-template-columns: 1fr; }
            .post-nav-item.next { text-align: left; justify-content: flex-start; }
        }

        /* Related Articles */
        .related-section { padding: clamp(3.5rem, 6vw, 5rem) 0 0; }

        .related-heading {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 1.8rem;
            flex-wrap: wrap;
            gap: .8rem;
        }

        .related-heading h2 {
            font-size: clamp(1.3rem, 1.6vw + .6rem, 1.8rem);
            font-weight: 700;
            color: var(--brand-text);
            position: relative;
            padding-left: 16px;
        }

        .related-heading h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 22px;
            background: var(--brand-aqua);
            border-radius: 4px;
        }

        .related-card {
            background: var(--brand-white);
            border: 1px solid var(--brand-border);
            border-radius: var(--radius-card);
            padding: 1.4rem 1.5rem;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: all .3s ease;
            box-shadow: var(--shadow-card);
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(28, 109, 150, .2);
        }

        .related-card .cat-label {
            display: inline-block;
            background: var(--brand-primary-light);
            color: var(--brand-primary);
            font-size: .72rem;
            font-weight: 600;
            padding: .15rem .6rem;
            border-radius: 999px;
            margin-bottom: .8rem;
            align-self: flex-start;
        }

        .related-card h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--brand-text);
            line-height: 1.5;
            margin-bottom: .65rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex-grow: 1;
        }

        .related-card h3 a { color: var(--brand-text); transition: all .2s ease; }
        .related-card h3 a:hover { color: var(--brand-primary); }

        .related-card .time-item {
            font-size: .82rem;
            color: var(--brand-text-weak);
            display: flex;
            align-items: center;
            gap: .35rem;
        }

        .related-card .time-item i { font-size: .72rem; color: var(--brand-aqua); }

        /* 404 state */
        .not-found-state {
            text-align: center;
            background: var(--brand-white);
            border: 1px dashed rgba(28, 109, 150, .3);
            border-radius: var(--radius-card);
            padding: 4rem 2rem;
            margin-bottom: 2rem;
        }

        .not-found-state .icon-circle {
            width: 64px;
            height: 64px;
            background: var(--brand-primary-light);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
        }

        .not-found-state .icon-circle i { font-size: 1.5rem; color: var(--brand-primary); }
        .not-found-state h2 { font-size: 1.4rem; font-weight: 700; color: var(--brand-text); margin-bottom: .5rem; }
        .not-found-state p { color: var(--brand-text-weak); font-size: .95rem; margin-bottom: 1.2rem; }

        .btn-back-home {
            display: inline-block;
            background: var(--brand-primary);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: .55rem 1.6rem;
            font-size: .92rem;
            font-weight: 600;
            border: none;
            transition: all .25s ease;
        }

        .btn-back-home:hover {
            background: var(--brand-primary-deep);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(28, 109, 150, .2);
        }

        /* ===== Quick Contact CTA ===== */
        .article-bottom-cta {
            background: var(--brand-primary-light);
            border-radius: var(--radius-card);
            padding: 2.2rem;
            margin-top: 2rem;
            border: 1px solid var(--brand-border);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .article-bottom-cta::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--brand-primary), var(--brand-aqua));
        }

        .article-bottom-cta h3 { font-size: 1.35rem; font-weight: 700; color: var(--brand-text); margin-bottom: .5rem; }
        .article-bottom-cta p { color: var(--brand-text-weak); font-size: .95rem; margin-bottom: 1.25rem; max-width: 560px; margin-left: auto; margin-right: auto; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--brand-dark);
            color: rgba(255, 255, 255, .75);
            padding: 4rem 0 0;
            margin-top: 0;
        }

        .site-footer .container { max-width: 1320px; }

        .footer-brand p { color: rgba(255, 255, 255, .55); font-size: .89rem; line-height: 1.7; margin-bottom: 0; }

        .footer-brand .logo-main { color: #fff; }
        .footer-brand .text-muted { color: rgba(255,255,255,.5) !important; font-size: .75rem; }

        .footer-heading {
            color: #fff;
            font-size: .95rem;
            font-weight: 600;
            margin-bottom: 1.2rem;
            position: relative;
            padding-bottom: .45rem;
        }

        .footer-heading::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--brand-aqua);
            border-radius: 2px;
        }

        .footer-links { list-style: none; padding-left: 0; margin: 0; }

        .footer-links li { margin-bottom: .5rem; }

        .footer-links a {
            color: rgba(255, 255, 255, .6);
            font-size: .9rem;
            transition: all .2s ease;
            display: inline-flex;
            align-items: center;
            gap: .4rem;
        }

        .footer-links a:hover { color: var(--brand-accent); padding-left: 3px; }

        .footer-links a::before {
            content: "";
            width: 4px;
            height: 4px;
            background: rgba(255,255,255,.3);
            border-radius: 50%;
            flex-shrink: 0;
            transition: background .2s ease;
        }

        .footer-links a:hover::before { background: var(--brand-accent); }

        .footer-contact { font-size: .88rem; line-height: 1.9; color: rgba(255, 255, 255, .55); }
        .footer-contact i { color: var(--brand-aqua); width: 20px; margin-right: .2rem; }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 1.4rem 0;
            margin-top: 3rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: .6rem;
            font-size: .82rem;
            color: rgba(255, 255, 255, .4);
        }

        .footer-bottom a { color: rgba(255, 255, 255, .5); transition: color .2s ease; margin: 0 .2rem; }
        .footer-bottom a:hover { color: var(--brand-accent); }

        /* ===== Back to top floating ===== */
        .back-to-top {
            position: fixed;
            right: 24px;
            bottom: 28px;
            width: 42px;
            height: 42px;
            background: var(--brand-white);
            border: 1px solid var(--brand-border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-primary);
            font-size: .9rem;
            box-shadow: var(--shadow-card);
            z-index: 100;
            transition: all .3s ease;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
        }

        .back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }

        .back-to-top:hover {
            background: var(--brand-primary);
            color: #fff;
            border-color: var(--brand-primary);
            box-shadow: 0 8px 20px rgba(28, 109, 150, .25);
        }

        @media (max-width: 576px) {
            .back-to-top { right: 16px; bottom: 20px; width: 38px; height: 38px; font-size: .8rem; }
        }

        /* ===== Article Adapter ===== */
        .article-panel-side {
            position: sticky;
            top: 110px;
        }

        @media (max-width: 991.98px) {
            .article-panel-side { position: static; margin-top: 2rem; }
        }

        .side-panel-card {
            background: var(--brand-white);
            border: 1px solid var(--brand-border);
            border-radius: var(--radius-card);
            padding: 1.3rem 1.5rem;
            box-shadow: var(--shadow-card);
            margin-bottom: 1rem;
        }

        .side-panel-card h4 {
            font-size: .9rem;
            font-weight: 600;
            color: var(--brand-primary);
            margin-bottom: .85rem;
            display: flex;
            align-items: center;
            gap: .4rem;
        }

        .side-panel-card .side-nav-links { list-style: none; padding-left: 0; margin: 0; }

        .side-panel-card .side-nav-links li { margin-bottom: .38rem; line-height: 1.4; }

        .side-panel-card .side-nav-links a {
            font-size: .86rem;
            color: var(--brand-text-weak);
            padding: .2rem 0;
            display: block;
            line-height: 1.5;
            transition: all .2s ease;
        }

        .side-panel-card .side-nav-links a:hover {
            color: var(--brand-primary);
            padding-left: .35rem;
        }

        .side-panel-contact {
            background: var(--brand-dark);
            color: #fff;
            padding: 1.5rem 1.5rem;
        }

        .side-panel-contact h4 { color: #fff; }

        .side-panel-contact p { font-size: .82rem; color: rgba(255,255,255,.6); margin-bottom: .8rem; }

        /* Article content selection */
        ::selection { background: rgba(47, 163, 160, .2); }

        /* Hide the extra skip content area */
        .site-main { position: relative; z-index: 1; }

/* roulang page: category1 */
:root{
  --primary:#1C6D96;
  --primary-dark:#114E6F;
  --primary-light:#EAF3F8;
  --teal:#2FA3A0;
  --accent:#F0774A;
  --accent-dark:#d96035;
  --bg:#F6F9FB;
  --white:#FFFFFF;
  --text:#162A38;
  --muted:#5C6F7E;
  --line:rgba(18,61,89,0.1);
  --dark:#0E3D55;
  --radius-md:16px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(16,42,60,.05), 0 10px 28px rgba(16,52,78,.08);
  --shadow-hover:0 2px 4px rgba(16,42,60,.05), 0 20px 44px rgba(16,52,78,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary)}
ul,ol{list-style:none;padding:0;margin:0}
p{margin-top:0;margin-bottom:1rem}
h1,h2,h3,h4,h5,h6{margin:0 0 .75rem;font-weight:700;line-height:1.3;color:var(--text)}
.container{max-width:1200px}
.section{padding:clamp(4.5rem,8vw,7rem) 0;position:relative}
.section-sm{padding:3.5rem 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:.4rem;
  background:var(--primary-light);color:var(--primary);
  font-size:.8rem;font-weight:600;letter-spacing:.04em;
  padding:.35rem .9rem;border-radius:999px;margin-bottom:1rem;
}
.section-title{font-size:clamp(1.5rem,2vw + 0.75rem,2.3rem);letter-spacing:-.02em}
.lead-title{font-size:1.08rem;color:var(--muted);max-width:680px}
.text-muted{color:var(--muted)!important}

.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  background:var(--primary);color:#fff;font-size:.98rem;font-weight:700;flex:0 0 auto;
}
.logo-main{display:block;font-size:1.05rem;font-weight:700;line-height:1.25;color:var(--text)}
.logo-sub{display:block;font-size:.75rem;color:var(--muted);line-height:1.4}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.45rem;
  border-radius:var(--radius-btn);
  font-weight:600;line-height:1.4;white-space:nowrap;
  padding:.65rem 1.3rem;border:1px solid transparent;
  transition:all .25s ease;
}
.btn i{font-size:.9em}
.btn-accent{
  background:var(--accent);color:#fff;box-shadow:0 10px 24px rgba(240,119,74,.25);
}
.btn-accent:hover,.btn-accent:focus{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(240,119,74,.30)}
.btn-line{
  background:#fff;color:var(--primary);border-color:rgba(28,109,150,.5);
}
.btn-line:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}
.btn-ghost-light{
  background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.35);backdrop-filter:blur(6px);
}
.btn-ghost-light:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-2px)}

.site-header{
  background:rgba(255,255,255,.90);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:1030;
}
.site-header .navbar{padding:.62rem 0;min-height:72px}
.navbar-brand{display:inline-flex;align-items:center;gap:.7rem;padding:0;margin-right:1.4rem}
.navbar-nav .nav-link{
  color:var(--text);font-weight:500;font-size:.95rem;position:relative;
  padding:.42rem 1rem;margin:0 .1rem;border-radius:8px;
}
.navbar-nav .nav-link::after{
  content:"";position:absolute;bottom:.05rem;left:50%;transform:translateX(-50%);
  height:2px;width:0;background:var(--primary);border-radius:4px;transition:width .25s ease;
}
.navbar-nav .nav-link:hover{color:var(--primary);background:var(--primary-light)}
.navbar-nav .nav-link:hover::after{width:32%}
.navbar-nav .nav-link.active{color:var(--primary);font-weight:600}
.navbar-nav .nav-link.active::after{width:32%}
.navbar-toggler{
  border:1px solid var(--line);border-radius:10px;width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;background:#fff;
}
.navbar-toggler-icon{background-image:none;width:auto;height:auto;font-family:"Font Awesome 6 Free";font-weight:900;color:var(--primary);font-size:1.1rem}
.navbar-toggler-icon::before{content:"\f0c9"}
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before{content:"\f00d"}
.nav-actions{display:flex;align-items:center;gap:.75rem}

.page-hero{
  background:var(--primary-light);
  padding:clamp(2.4rem,5vw,4.2rem) 0 clamp(2.6rem,6vw,4.6rem);
  overflow:hidden;position:relative;
}
.page-hero::before{
  content:"";position:absolute;right:-10%;top:-35%;width:520px;height:520px;border-radius:50%;
  background:rgba(255,255,255,.48);pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;left:-8%;bottom:-45%;width:400px;height:400px;border-radius:50%;
  background:rgba(47,163,160,.08);pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem;font-size:.82rem;color:var(--muted);margin-bottom:1rem;padding:0}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.55;margin:0 .15rem}
.hero-h1{
  font-size:clamp(2rem,3.6vw + 1rem,3.1rem);
  letter-spacing:-.03em;line-height:1.15;margin-bottom:1.1rem;
}
.page-hero .lead{
  font-size:1.08rem;color:var(--muted);max-width:580px;margin-bottom:1.6rem;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:1.8rem;margin-top:2rem}
.hero-tags span{display:inline-flex;align-items:center;gap:.5rem;color:var(--text);font-size:.92rem;font-weight:500}
.hero-tags i{color:var(--teal);font-size:1.05rem}
.hero-media{position:relative}
.browser-shell{
  background:#fff;border-radius:20px;box-shadow:var(--shadow-hover);
  padding:.8rem;border:1px solid rgba(255,255,255,.9);
}
.browser-top{display:flex;align-items:center;gap:.5rem;padding:.15rem .35rem .7rem;border-bottom:1px solid var(--line);margin-bottom:.8rem}
.browser-dot{width:10px;height:10px;border-radius:50%;background:#edf0f2}
.browser-dot:nth-child(1){background:#f08a6a}
.browser-dot:nth-child(2){background:#f3c76b}
.browser-dot:nth-child(3){background:#72c1a8}
.browser-address{
  flex:1;background:var(--bg);border-radius:8px;padding:.2rem .75rem;font-size:.78rem;color:var(--muted);
  display:flex;align-items:center;gap:.4rem;margin-left:.4rem;
}
.browser-address i{color:var(--teal);font-size:.7rem}
.browser-screen{position:relative;border-radius:12px;overflow:hidden}
.browser-screen img{width:100%;height:320px;object-fit:cover}
.hero-media-float{
  position:absolute;left:-18px;bottom:28px;background:#fff;border-radius:14px;
  padding:.7rem 1rem;box-shadow:var(--shadow-hover);display:flex;gap:.65rem;align-items:center;
  z-index:3;max-width:220px;border:1px solid rgba(255,255,255,.7);
}
.float-icon{width:36px;height:36px;background:var(--primary-light);border-radius:10px;color:var(--better);}
.hero-media-float .float-icon i{color:var(--teal);font-size:1rem}
.hero-media-float strong{display:block;font-size:.88rem;line-height:1.4;color:var(--text)}
.hero-media-float small{font-size:.76rem;color:var(--muted)}

.icon-block{
  width:44px;height:44px;border-radius:12px;background:var(--primary-light);
  color:var(--teal);display:inline-flex;align-items:center;justify-content:center;font-size:1.1rem;flex:0 0 auto;
}
.mini-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:1.55rem 1.6rem;height:100%;box-shadow:var(--shadow-card);transition:all .3s ease;position:relative;
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.mini-card h3{margin:.8rem 0 .5rem;font-size:1.05rem}
.mini-card p{color:var(--muted);font-size:.9rem;margin:0}
.mini-card .icon-block{margin-bottom:.85rem;transition:all .3s ease}
.mini-card:hover .icon-block{background:var(--teal);color:#fff}

.overview-img img{border-radius:var(--radius-lg);box-shadow:var(--shadow-hover);width:100%;height:100%;object-fit:cover}
.overview-float{
  background:#fff;box-shadow:var(--shadow-hover);border-radius:16px;padding:1rem 1.2rem;
  max-width:260px;margin:-3.5rem auto 0;position:relative;z-index:2;
}
.func-card{
  background:#fff;border-radius:26px;padding:clamp(1.6rem,4vw,3.4rem);
  box-shadow:var(--shadow-card);border:1px solid var(--line);
  transition:box-shadow .3s ease;
}
.func-card:hover{box-shadow:var(--shadow-hover)}
.func-card + .func-card{margin-top:1.4rem}
.func-number{
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  font-variant-numeric:tabular-nums;
  font-size:1.9rem;font-weight:700;color:var(--primary-light);position:absolute;right:1.1rem;top:.6rem;line-height:1;
}
.func-card h3{font-size:1.4rem;margin:.5rem 0 .7rem;position:relative;z-index:1}
.func-card p{color:var(--muted)}
.func-list li{display:flex;gap:.6rem;padding:.4rem 0;font-size:.95rem}
.func-list i{color:var(--teal);margin-top:.18rem;font-size:.9rem}
.media-label{
  position:absolute;left:1rem;bottom:1rem;background:rgba(255,255,255,.93);
  border-radius:10px;padding:.35rem .8rem;font-size:.8rem;color:var(--text);box-shadow:var(--shadow-card);
}
.side-note{
  background:var(--primary-light);border-radius:14px;padding:1.2rem 1.3rem;font-size:.88rem;color:var(--primary-dark);
}
.side-note strong{display:block;margin-bottom:.35rem}
.wide-utility-card{
  border-radius:28px;background:var(--dark);color:#eef8fc;position:relative;overflow:hidden;
  padding:clamp(2rem,6vw,4rem);
}
.wide-utility-card::after{
  content:"\e72e";font-family:"Font Awesome 6 Free";font-weight:400;position:absolute;
  font-size:12rem;right:-2rem;top:-3rem;opacity:.04;transform:rotate(-12deg);color:#fff;line-height:1;
}
.wide-utility-card h2{color:#fff;font-size:clamp(1.5rem,2vw + .6rem,2rem)}
.wide-utility-card p{color:rgba(255,255,255,.8)}
.utility-item{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.12);
  border-radius:18px;padding:1.2rem 1.3rem;transition:all .3s ease;backdrop-filter:blur(4px);
}
.utility-item:hover{background:rgba(255,255,255,.18);transform:translateY(-4px)}
.utility-item .icon-block{background:rgba(255,255,255,.16);color:#fff;width:44px;height:44px;border-radius:12px}
.utility-item h4{color:#fff;font-size:1.02rem;margin:.8rem 0 .3rem}
.utility-item p{font-size:.88rem;color:rgba(255,255,255,.75);margin:0}
.cross-links{
  display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2.5rem;padding-top:2rem;border-top:1px solid rgba(255,255,255,.16);
}
.cross-links a{
  display:inline-flex;align-items:center;gap:.5rem;color:rgba(255,255,255,.9);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  border-radius:999px;padding:.45rem 1.1rem;font-size:.9rem;transition:all .3s;
}
.cross-links a:hover{background:var(--teal);color:#fff;border-color:var(--teal)}
.faq-wrap{align-items:start}
.faq-side{position:sticky;top:110px}
#faqTitle{font-size:clamp(1.5rem,1.5vw + 1rem,2rem)}
.accordion-item{
  border:1px solid var(--line);border-radius:16px!important;overflow:hidden;margin-bottom:14px;
  box-shadow:0 2px 10px rgba(16,42,60,.04);
}
.accordion-button{
  background:#fff;color:var(--text);font-weight:600;font-size:.98rem;
  padding:1.1rem 1.35rem;min-height:56px;box-shadow:none;
}
.accordion-button::after{
  background-image:none;font-family:"Font Awesome 6 Free";
  content:"\f078";font-size:.9rem;color:var(--primary);
  display:flex;align-items:center;justify-content:center;width:auto;height:auto;
  transition:transform .25s ease;
}
.accordion-button:not(.collapsed){background:#fff;color:var(--primary);box-shadow:none}
.accordion-button:not(.collapsed)::after{background-image:none;transform:rotate(180deg)}
.accordion-button:focus{box-shadow:none;outline:none;border-color:var(--line)}
.accordion-body{padding:0 1.35rem 1.25rem;color:var(--muted);font-size:.95rem;background:#fff}
.contact-dark{
  background:var(--dark);border-radius:30px;color:rgba(255,255,255,.85);
  padding:clamp(2rem,6vw,4.5rem);position:relative;overflow:hidden;
}
.contact-dark h2{color:#fff}
.contact-dark .form-control,.contact-dark .form-select{
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.15);
  border-radius:12px;color:#fff;padding:.7rem 1rem;font-size:.92rem;
}
.contact-dark .form-control:focus,.contact-dark .form-select:focus{
  background:rgba(255,255,255,.14);border-color:var(--teal);
  box-shadow:0 0 0 .2rem rgba(47,163,160,.15);color:#fff;
}
.contact-dark .form-select option{color:var(--text)}
.contact-dark label{font-size:.85rem;margin-bottom:.3rem;color:rgba(255,255,255,.85)}
.contact-dark .form-text{color:rgba(255,255,255,.55);font-size:.8rem}
.site-footer{background:#fff;border-top:1px solid var(--line);padding:4.2rem 0 1.6rem}
.footer-brand .logo-main{font-size:1.12rem;margin-bottom:.1rem}
.footer-brand p{max-width:360px}
.footer-heading{font-size:.95rem;color:var(--text);margin-bottom:1.1rem}
.footer-links li{margin-bottom:.55rem}
.footer-links a{color:var(--muted);font-size:.9rem}
.footer-links a:hover{color:var(--primary);padding-left:3px}
.footer-contact{font-size:.9rem;color:var(--muted)}
.footer-contact i{color:var(--teal);width:20px}
.footer-bottom{
  border-top:1px solid var(--line);margin-top:3rem;padding-top:1.1rem;
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem;
  color:var(--muted);font-size:.82rem;
}
.footer-bottom a{color:var(--muted)}
@media (max-width: 1199px){
  .hero-h1{font-size:calc(2rem + 1vw)}
}
@media (max-width: 991px){
  .site-header .navbar{padding:.6rem 0}
  .logo-main{font-size:1rem}
  .navbar-collapse{
    background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-card);
    padding:1rem .8rem;margin-top:.8rem;
  }
  .navbar-nav .nav-link.active::after{display:none}
  .navbar-nav .nav-link.active{background:var(--primary-light)}
  .page-hero{padding-top:clamp(2rem,5vw,3rem)}
  .hero-media{margin-top:2.5rem}
  .hero-media-float{left:0}
  .overview-media{margin-top:2rem}
  .faq-side{position:static;margin-bottom:2rem}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width: 575px){
  .site-header .navbar{min-height:64px}
  .nav-actions .btn-accent.navbar-cta{height:38px;padding:.3rem .8rem;font-size:.8rem}
  .browser-screen img{height:230px}
  .hero-media-float{position:static;margin-top:.8rem;max-width:none;width:100%}
  .page-hero::before,.page-hero::after{display:none}
  .func-card{padding:1.4rem}
  .func-number{font-size:1.3rem}
}

/* roulang page: category2 */
:root {
  --c-primary: #1C6D96;
  --c-primary-dark: #114E6F;
  --c-primary-light: #EAF3F8;
  --c-accent: #2FA3A0;
  --c-action: #F0774A;
  --c-action-deep: #cf5f34;
  --c-bg: #F6F9FB;
  --c-white: #FFFFFF;
  --c-text: #162A38;
  --c-weak: #5C6F7E;
  --c-deep: #0E3D55;
  --c-border: rgba(18, 61, 89, 0.1);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-image: 20px;
  --shadow-card: 0 1px 2px rgba(16, 42, 60, .05), 0 10px 28px rgba(16, 52, 78, .08);
  --shadow-hover: 0 2px 4px rgba(16, 42, 60, .06), 0 20px 44px rgba(16, 52, 78, .14);
  --shadow-action: 0 10px 24px rgba(240, 119, 74, .25);
  --space-section: clamp(4.5rem, 8vw, 7rem);
  --font-default: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-default);
  margin: 0;
  overflow-x: hidden;
  line-height: 1.75;
}

a {
  text-decoration: none;
  transition: color .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease;
}

img {
  max-width: 100%;
}

button,
input,
textarea,
select {
  font-family: inherit;
}

.container {
  max-width: 1200px;
}

.section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}

.bg-soft {
  background: var(--c-primary-light);
}

.mt-0 {
  margin-top: 0;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .45rem 1rem;
  border-radius: 999px;
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-size: .83rem;
  font-weight: 600;
  letter-spacing: .04em;
  line-height: 1.4;
}

.section-label.light {
  background: rgba(255, 255, 255, .7);
  color: var(--c-primary-dark);
}

.section-label.white {
  background: rgba(255, 255, 255, .14);
  color: #fff;
}

.section-title {
  font-size: clamp(1.5rem, 2vw + .75rem, 2.3rem);
  font-weight: 700;
  line-height: 1.3;
  margin: 1rem 0 .75rem;
  color: var(--c-text);
}

.section-sub {
  color: var(--c-weak);
  font-size: 1rem;
  max-width: 680px;
}

/* ====== header ====== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1040;
  background: rgba(255, 255, 255, .92);
  border-bottom: 1px solid var(--c-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.site-header .navbar {
  min-height: 72px;
  padding-top: .55rem;
  padding-bottom: .55rem;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: .65rem;
  color: var(--c-text);
  padding: 0;
  margin: 0;
  width: auto;
}

.navbar-brand:hover,
.navbar-brand:focus {
  color: var(--c-primary);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 13px;
  background: var(--c-primary);
  color: #fff;
  font-size: 1.08rem;
  font-weight: 700;
  box-shadow: 0 8px 18px rgba(28, 109, 150, .18);
}

.logo-main {
  display: block;
  color: var(--c-text);
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.25;
}

.logo-sub {
  display: block;
  color: var(--c-weak);
  font-size: .72rem;
  letter-spacing: .08em;
  line-height: 1.4;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: .35rem;
}

.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  background: var(--c-action);
  color: #fff !important;
  border-radius: 999px;
  border: 0;
  padding: .65rem 1.35rem;
  font-weight: 600;
  box-shadow: var(--shadow-action);
  white-space: nowrap;
  transition: transform .22s ease, background-color .22s ease, box-shadow .22s ease;
}

.btn-accent:hover,
.btn-accent:focus-visible {
  background: var(--c-action-deep);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(240, 119, 74, .32);
}

.navbar-toggler {
  border: 1px solid var(--c-border);
  border-radius: 10px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: transparent;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(28, 109, 150, .18);
}

.navbar-toggler-icon {
  display: inline-block;
  width: 1.5em;
  height: 1.5em;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(22,42,56,0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 1.4rem;
}

@media (max-width: 991.98px) {
  .site-header .navbar .container {
    flex-wrap: nowrap;
  }
  .navbar-brand {
    margin-right: auto;
  }
  .site-header .navbar-collapse {
    width: 100%;
    order: 99 !important;
    background: #fff;
    padding: .8rem 1rem 1rem;
    border-radius: 0 0 18px 18px;
    box-shadow: var(--shadow-card);
    border-top: 1px solid var(--c-border);
    margin-top: .45rem;
  }
  .navbar-collapse .navbar-nav {
    gap: .4rem;
  }
  .navbar-nav .nav-item {
    width: 100%;
  }
  .navbar-nav .nav-link.active::after {
    display: none;
  }
  .navbar-nav .nav-link.active {
    background: var(--c-primary-light);
    border-radius: 999px;
    padding-left: 1rem;
  }
}

.navbar-nav .nav-item {
  margin: 0 .15rem;
}

.navbar-nav .nav-link {
  font-weight: 600;
  color: var(--c-text);
  padding: .55rem 1rem;
  border-radius: 999px;
  font-size: .95rem;
  position: relative;
  line-height: 1.45;
}

.navbar-nav .nav-link:hover {
  color: var(--c-primary);
  background: rgba(28, 109, 150, .06);
}

.navbar-nav .nav-link.active {
  color: var(--c-primary);
  background: transparent;
}

.navbar-nav .nav-link.active::after {
  content: "";
  position: absolute;
  left: 1.15rem;
  right: 1.15rem;
  bottom: .2rem;
  height: 2px;
  border-radius: 2px;
  background: var(--c-primary);
}

@media (min-width: 992px) {
  .navbar-collapse {
    flex-grow: 0 !important;
  }
}

/* ====== buttons ====== */
.btn-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  border-radius: 999px;
  background: var(--c-action);
  border: 1px solid var(--c-action);
  color: #fff;
  font-weight: 600;
  padding: .85rem 1.8rem;
  transition: transform .22s ease, background-color .22s ease, border-color .22s ease, box-shadow .22s ease;
  box-shadow: var(--shadow-action);
}

.btn-action:hover,
.btn-action:focus-visible {
  background: var(--c-action-deep);
  border-color: var(--c-action-deep);
  color: #fff;
  transform: translateY(-2px);
}

.btn-line {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  border-radius: 999px;
  background: #fff;
  border: 1px solid rgba(28, 109, 150, .28);
  color: var(--c-primary-dark);
  font-weight: 600;
  padding: .85rem 1.75rem;
  transition: transform .22s ease, background-color .22s ease, color .2s ease, border-color .2s ease;
}

.btn-line:hover,
.btn-line:focus-visible {
  background: var(--c-primary-light);
  border-color: rgba(28, 109, 150, .35);
  color: var(--c-primary-dark);
  transform: translateY(-2px);
}

@media (max-width: 520px) {
  .btn-action,
  .btn-line {
    width: 100%;
    margin-bottom: .25rem;
  }
}

/* ====== page hero ====== */
.page-hero {
  background-color: var(--c-primary-light);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  top: -100px;
  right: -60px;
  background: rgba(255, 255, 255, .35);
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  padding-top: 3rem;
  padding-bottom: 4rem;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .55rem;
  font-size: .86rem;
  color: var(--c-weak);
  margin-bottom: 1.2rem;
}

.breadcrumb-nav a {
  color: var(--c-weak);
  border-radius: 999px;
}

.breadcrumb-nav a:hover {
  color: var(--c-primary);
}

.breadcrumb-nav i {
  font-style: normal;
  opacity: .5;
}

.hero-title {
  font-size: clamp(2rem, 3.6vw + .8rem, 3.2rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -.02em;
  color: var(--c-text);
  margin: 1rem 0 .9rem;
}

.hero-title span {
  color: var(--c-primary);
}

.lead {
  color: var(--c-weak);
  font-size: 1.05rem;
  line-height: 1.85;
  max-width: 640px;
  margin-bottom: 1.35rem;
}

.hero-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .55rem;
  margin-bottom: 1.7rem;
}

.hero-tags span {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: #fff;
  border: 1px solid rgba(28, 109, 150, .12);
  border-radius: 999px;
  padding: .4rem .9rem;
  font-size: .82rem;
  color: var(--c-primary-dark);
}

.hero-tags i {
  color: var(--c-accent);
  font-size: .8rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .9rem;
}

.hero-visual {
  position: relative;
  border-radius: 22px;
  background: #fff;
  padding: .75rem;
  box-shadow: var(--shadow-card);
  transform: rotate(.8deg);
}

.hero-visual:hover {
  transform: rotate(0deg);
  box-shadow: var(--shadow-hover);
  transition: transform .35s ease, box-shadow .35s ease;
}

.hero-visual img {
  border-radius: 16px;
  width: 100%;
  height: 400px;
  object-fit: cover;
  display: block;
}

.float-card {
  position: absolute;
  right: -8px;
  bottom: 22px;
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-hover);
  padding: .85rem 1.1rem;
  display: flex;
  align-items: center;
  gap: .7rem;
  max-width: 230px;
  border: 1px solid rgba(18, 61, 89, .07);
}

.float-card .icon {
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-size: 1rem;
}

.float-card small {
  display: block;
  font-size: .8rem;
  color: var(--c-weak);
  line-height: 1.4;
}

.float-card strong {
  font-size: .86rem;
  font-weight: 700;
  color: var(--c-text);
  white-space: nowrap;
  line-height: 1.3;
}

@media (max-width: 991.98px) {
  .page-hero .container {
    padding-top: 2.2rem;
    padding-bottom: 2.8rem;
  }
  .hero-visual {
    transform: none;
    margin-top: .5rem;
  }
  .hero-visual img {
    height: 260px;
  }
  .float-card {
    right: 14px;
    bottom: 14px;
  }
}

/* ====== guide banner ====== */
.guide-banner {
  overflow: hidden;
  border-radius: 24px;
  background: #fff;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--c-border);
}

.guide-banner .guide-banner-media {
  height: 100%;
  min-height: 320px;
  background: var(--c-primary-light);
}

.guide-banner .guide-banner-media img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
}

.guide-banner .guide-banner-content {
  padding: 2.6rem;
}

.guide-banner .guide-banner-content h2 {
  margin-top: .9rem;
  margin-bottom: .9rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--c-text);
  font-size: clamp(1.32rem, 1.2vw + .8rem, 1.9rem);
}

.guide-banner p {
  color: var(--c-weak);
  font-size: .95rem;
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  margin-bottom: .75rem;
  font-size: .94rem;
  color: var(--c-text);
}

.check-list li i {
  color: var(--c-accent);
  margin-top: .28rem;
  flex-shrink: 0;
}

@media (max-width: 991.98px) {
  .guide-banner .guide-banner-content {
    padding: 1.8rem 1.4rem;
  }
  .guide-banner .guide-banner-media img {
    min-height: 240px;
  }
}

/* ====== steps ====== */
.sticky-visual {
  position: sticky;
  top: 110px;
  border-radius: 22px;
  background: var(--c-primary-light);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.sticky-visual img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  display: block;
}

.visual-caption {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(6px);
  border-radius: 16px;
  padding: .85rem 1.05rem;
  font-size: .85rem;
  color: var(--c-text);
  box-shadow: var(--shadow-card);
}

.steps-side h2 {
  font-size: clamp(1.5rem, 2vw + .75rem, 2.3rem);
  font-weight: 700;
  line-height: 1.35;
  margin: 1rem 0 1rem;
  color: var(--c-text);
}

.steps-side > p {
  color: var(--c-weak);
  margin-bottom: 1.5rem;
}

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

.step-list li {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: .9rem;
  align-items: start;
  padding: 1.3rem 0;
  border-top: 1px solid var(--c-border);
}

.step-list li:last-child {
  border-bottom: 1px solid var(--c-border);
}

.step-num {
  position: relative;
  width: 52px;
  height: 52px;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--c-primary);
  box-shadow: 0 4px 10px rgba(16, 52, 78, .05);
  font-variant-numeric: tabular-nums;
}

.step-list h3 {
  margin: .15rem 0 .3rem;
  color: var(--c-text);
  font-size: 1.07rem;
  font-weight: 700;
}

.step-list p {
  color: var(--c-weak);
  font-size: .92rem;
  margin: 0;
  max-width: 620px;
}

@media (max-width: 575.98px) {
  .step-list li {
    grid-template-columns: 50px 1fr;
    gap: .6rem;
  }
  .step-num {
    width: 44px;
    height: 44px;
    border-radius: 13px;
    font-size: .9rem;
  }
}

/* ====== environment cards ====== */
.env-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.1rem;
}

.mini-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-card);
  padding: 1.3rem 1.25rem;
  box-shadow: 0 6px 18px rgba(16, 52, 78, .04);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.mini-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(47, 163, 160, .3);
}

.mini-card .icon {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: var(--c-primary-light);
  color: var(--c-accent);
  margin-bottom: .9rem;
}

.mini-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: .4rem;
}

.mini-card p {
  color: var(--c-weak);
  font-size: .86rem;
  margin: 0;
  line-height: 1.7;
}

@media (max-width: 991.98px) {
  .env-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 575.98px) {
  .env-grid {
    grid-template-columns: 1fr;
  }
}

/* ====== guide callout ====== */
.guide-callout-panel {
  background: var(--c-deep);
  border-radius: 24px;
  padding: 2.5rem;
  color: #fff;
  overflow: hidden;
  position: relative;
}

.guide-callout-panel h2 {
  font-size: clamp(1.4rem, 1.4vw + .8rem, 2rem);
  font-weight: 700;
  margin: .8rem 0 .65rem;
  color: #fff;
}

.guide-callout-panel p {
  color: rgba(255, 255, 255, .78);
  max-width: 700px;
}

.callout-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin-top: 1.2rem;
}

.callout-tags span {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: rgba(255, 255, 255, .1);
  border-radius: 999px;
  padding: .45rem 1rem;
  font-size: .83rem;
  color: #fff;
}

.callout-tags i {
  color: var(--c-action);
}

/* ====== FAQ ====== */
.faq-side {
  position: sticky;
  top: 110px;
  padding-right: 1.5rem;
}

.faq-side p {
  color: var(--c-weak);
}

.faq-help-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-card);
  padding: 1.25rem;
  margin-top: 1.5rem;
  box-shadow: 0 4px 14px rgba(16, 52, 78, .04);
  display: flex;
  gap: 1rem;
  align-items: center;
}

.faq-help-card .icon {
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-size: 1.05rem;
}

.faq-help-card h3 {
  margin: 0 0 .15rem;
  font-size: .95rem;
  font-weight: 700;
}

.faq-help-card a {
  font-size: .84rem;
  color: var(--c-action);
  font-weight: 600;
}

.faq-help-card a:hover {
  color: var(--c-action-deep);
}

.accordion-item {
  background: #fff;
  border: 1px solid var(--c-border) !important;
  border-radius: 16px !important;
  overflow: hidden;
  margin-bottom: .9rem;
  box-shadow: 0 4px 12px rgba(16, 44, 70, .032);
}

.accordion-button {
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-text);
  background: #fff;
  padding: 1.1rem 3.5rem 1.1rem 1.1rem;
  line-height: 1.6;
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: none;
}

.accordion-button:not(.collapsed) {
  color: var(--c-primary);
  background: var(--c-primary-light);
}

.accordion-button::after {
  background-size: 1.1rem;
  background-position: center;
  opacity: .8;
}

.accordion-button:not(.collapsed)::after {
  opacity: 1;
}

.accordion-item:last-of-type,
.accordion-item:first-of-type {
  border-radius: 16px !important;
}

.q-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-weight: 700;
  font-size: .78rem;
  margin-right: .65rem;
  flex-shrink: 0;
}

.accordion-button:not(.collapsed) .q-num {
  background: var(--c-primary);
  color: #fff;
}

.accordion-body {
  padding: .9rem 1.3rem 1.3rem 3.1rem;
  color: var(--c-weak);
  font-size: .94rem;
  line-height: 1.85;
  border-top: 1px dashed rgba(18, 61, 89, .12);
}

@media (max-width: 575.98px) {
  .accordion-body {
    padding-left: 1.2rem;
  }
}

/* ====== contact band ====== */
.contact-band {
  background-color: var(--c-deep);
  border-radius: 28px;
  padding: 2.5rem;
  box-shadow: 0 24px 60px rgba(14, 61, 85, .22);
  color: #fff;
  overflow: hidden;
}

.contact-band .section-title {
  color: #fff;
}

.contact-band .lead-text {
  color: rgba(255, 255, 255, .76);
  font-size: .98rem;
  max-width: 560px;
}

.contact-band .form-label {
  color: #fff;
  font-weight: 600;
  font-size: .88rem;
}

.contact-band .form-control {
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(255, 255, 255, .3);
  color: var(--c-text);
  padding: .78rem 1rem;
  font-size: .92rem;
}

.contact-band .form-control:focus {
  border-color: var(--c-action);
  box-shadow: 0 0 0 .24rem rgba(240, 119, 74, .18);
}

.contact-detail-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}

.contact-detail-list li {
  display: flex;
  align-items: center;
  gap: .8rem;
  margin-bottom: .85rem;
  color: rgba(255, 255, 255, .82);
  font-size: .9rem;
}

.contact-detail-list i {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-action);
  font-size: .9rem;
  flex: 0 0 38px;
}

.form-result {
  display: none;
  border-radius: 14px;
  background: rgba(47, 163, 160, .14);
  border: 1px solid rgba(47, 163, 160, .45);
  color: #fff;
  padding: .85rem 1.05rem;
  font-size: .9rem;
  margin-top: .5rem;
}

.form-result.show {
  display: flex;
  align-items: center;
  gap: .6rem;
}

@media (max-width: 575.98px) {
  .contact-band {
    padding: 1.7rem 1.2rem;
  }
}

/* ====== related cards ====== */
.related-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: 20px;
  overflow: hidden;
  transition: transform .25s ease, box-shadow .3s ease;
  box-shadow: 0 6px 18px rgba(16, 44, 70, .04);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.related-img {
  overflow: hidden;
  height: 210px;
}

.related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .5s ease;
}

.related-card:hover .related-img img {
  transform: scale(1.03);
}

.related-content {
  padding: 1.35rem 1.4rem 1.5rem;
}

.related-content h3 {
  font-size: 1.13rem;
  font-weight: 700;
  margin: .7rem 0 .45rem;
  color: var(--c-text);
  line-height: 1.45;
}

.related-content p {
  color: var(--c-weak);
  font-size: .9rem;
  margin-bottom: .8rem;
}

.link-more {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-weight: 700;
  color: var(--c-primary);
  font-size: .88rem;
}

.link-more:hover {
  color: var(--c-accent);
  gap: .65rem;
  transition: gap .25s ease;
}

/* ====== footer ====== */
.site-footer {
  background: #123141;
  color: rgba(255, 255, 255, .72);
  padding-top: 4rem;
  margin-top: calc(var(--space-section) - 1rem);
}

.site-footer a {
  color: rgba(255, 255, 255, .62);
  font-size: .9rem;
}

.site-footer a:hover {
  color: #fff;
}

.footer-brand p {
  color: rgba(255, 255, 255, .6);
  line-height: 1.8;
}

.footer-heading {
  color: #fff;
  font-size: .96rem;
  font-weight: 700;
  margin: .5rem 0 1rem;
  letter-spacing: .02em;
}

.site-footer .footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer .footer-links li {
  margin-bottom: .55rem;
}

.site-footer .footer-links a {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
}

.site-footer .footer-links a:before {
  content: "›";
  color: rgba(255, 255, 255, .38);
}

.site-footer .footer-contact div {
  color: rgba(255, 255, 255, .62);
  font-size: .88rem;
  display: flex;
  align-items: center;
  gap: .55rem;
}

.site-footer .footer-contact i {
  color: var(--c-accent);
  width: 18px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .13);
  margin-top: 3rem;
  padding: 1.2rem 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  font-size: .84rem;
  color: rgba(255, 255, 255, .6);
}

.footer-bottom a {
  color: rgba(255, 255, 255, .75);
  font-size: .84rem;
}

@media (max-width: 767.98px) {
  .site-footer {
    padding-top: 3rem;
  }
  .footer-bottom {
    justify-content: center;
    text-align: center;
    padding-bottom: 1.2rem;
  }
}

/* ====== misc utilities ====== */
.pt-0 {
  padding-top: 0 !important;
}

.pb-0 {
  padding-bottom: 0 !important;
}

.section.with-deco {
  position: relative;
}

.section.with-deco::after {
  content: "";
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(28, 109, 150, .06);
  top: 20%;
  right: 5%;
  pointer-events: none;
}

:focus-visible {
  outline: 3px solid rgba(47, 163, 160, .45);
  outline-offset: 2px;
}

/* roulang page: category3 */
:root{
      --primary:#1C6D96;
      --primary-dark:#114E6F;
      --primary-light:#EAF3F8;
      --accent:#2FA3A0;
      --action:#F0774A;
      --action-dark:#d8643d;
      --bg:#F6F9FB;
      --text:#162A38;
      --muted:#5C6F7E;
      --border:rgba(18,61,89,.1);
      --dark:#0E3D55;
      --radius:16px;
      --radius-sm:10px;
      --shadow:0 1px 2px rgba(16,42,60,.05),0 10px 28px rgba(16,52,78,.08);
      --shadow-hover:0 2px 4px rgba(16,42,60,.06),0 20px 44px rgba(16,52,78,.14);
      --section-pad:clamp(4.5rem,8vw,7rem);
      --font:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
    }

    html{scroll-behavior:smooth}
    *{box-sizing:border-box}
    body{
      margin:0;
      background:var(--bg);
      color:var(--text);
      font-family:var(--font);
      line-height:1.75;
      font-size:1rem;
      -webkit-font-smoothing:antialiased;
    }

    img{max-width:100%;height:auto;display:block}
    a{color:inherit;text-decoration:none;transition:color .25s ease}
    button,input,textarea{font-family:inherit}
    .container{max-width:1280px}

    .section{padding:var(--section-pad) 0;position:relative}
    .section-head{margin-bottom:2.6rem}
    .section-eyebrow{
      display:inline-flex;align-items:center;gap:.5rem;
      background:var(--primary-light);color:var(--primary);
      padding:.35rem 1rem;border-radius:999px;
      font-size:.8rem;letter-spacing:.05em;font-weight:600;
      margin-bottom:.9rem;
    }
    .section-title{font-size:clamp(1.5rem,2.2vw + .65rem,2.3rem);font-weight:700;line-height:1.3;margin:0 0 .6rem}
    .section-desc{color:var(--muted);max-width:680px;margin:0}
    .text-action{color:var(--action)}
    .text-muted{color:var(--muted)!important}

    /* ---------- 按钮 ---------- */
    .btn{font-weight:600;border-radius:var(--radius-sm);padding:.65rem 1.4rem;font-size:.95rem;transition:all .25s ease}
    .btn-action{background:var(--action);color:#fff;border:0;box-shadow:0 10px 24px rgba(240,119,74,.25)}
    .btn-action:hover,.btn-action:focus{background:var(--action-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px rgba(240,119,74,.3)}
    .btn-outline-primary{border-color:var(--primary);color:var(--primary);background:#fff}
    .btn-outline-primary:hover{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary)}
    .btn-light{background:#fff;color:var(--primary-dark);border:0}
    .btn-light:hover{background:var(--primary-light);color:var(--primary-dark)}

    /* ---------- Header / Nav ---------- */
    .site-header{
      position:sticky;top:0;z-index:1050;
      background:rgba(255,255,255,.92);
      -webkit-backdrop-filter:blur(10px);
      backdrop-filter:blur(10px);
      border-bottom:1px solid var(--border);
    }
    .navbar{padding:.55rem 0}
    .navbar-brand{display:flex;align-items:center;gap:.65rem;padding:0;margin:0}
    .brand-mark{
      display:inline-flex;align-items:center;justify-content:center;
      width:42px;height:42px;flex:0 0 auto;border-radius:15px;
      background:var(--primary-light);color:var(--primary-dark);
      font-size:1rem;font-weight:800;letter-spacing:.05em;
    }
    .logo-main{display:block;font-size:1.14rem;font-weight:700;color:var(--text);line-height:1.3}
    .logo-sub{display:block;font-size:.72rem;color:var(--muted);line-height:1.3}
    .nav-actions{display:flex;align-items:center;gap:.5rem}
    .btn-accent{
      background:var(--action);color:#fff;border:0;border-radius:999px;
      padding:.48rem 1.2rem;font-size:.9rem;font-weight:600;
      box-shadow:0 8px 20px rgba(240,119,74,.18);
      transition:all .25s ease;
    }
    .btn-accent:hover{background:var(--action-dark);color:#fff;transform:translateY(-2px)}
    .navbar-toggler{border:1px solid var(--border);border-radius:10px;padding:.3rem .5rem}
    .navbar-toggler:focus{box-shadow:0 0 0 3px rgba(28,109,150,.15)}
    .navbar-toggler-icon{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2818,42,56,.7%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e")}

    #navContent{position:relative}
    .navbar-nav{gap:.4rem;padding:.2rem 0}
    .nav-link{
      color:var(--text)!important;font-weight:500;font-size:.94rem;
      border-radius:999px;padding:.45rem 1rem!important;position:relative;
      transition:all .2s ease;
    }
    .nav-link:hover{color:var(--primary)!important;background:var(--primary-light)}
    .nav-link.active{color:var(--primary)!important;background:var(--primary-light);font-weight:600}
    .nav-link.active::after{content:'';position:absolute;left:1.1rem;right:1.1rem;bottom:.35rem;height:2px;background:var(--primary);border-radius:2px}

    /* ---------- 通用卡 ---------- */
    .card-r{
      background:#fff;border:1px solid var(--border);
      border-radius:var(--radius);box-shadow:var(--shadow);
      padding:1.6rem;transition:all .3s ease;height:100%;
    }
    .card-r:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
    .icon-box{
      width:46px;height:46px;border-radius:13px;background:var(--primary-light);
      color:var(--accent);display:inline-flex;align-items:center;justify-content:center;
      font-size:1.2rem;margin-bottom:1rem;flex:0 0 auto;
    }
    .tag-pill{
      display:inline-flex;align-items:center;gap:.3rem;
      background:var(--primary-light);color:var(--primary-dark);
      font-size:.78rem;font-weight:600;border-radius:999px;
      padding:.2rem .85rem;line-height:1.4;
    }

    /* ---------- Hero ---------- */
    .page-hero{padding:4.8rem 0 4rem;position:relative;overflow:hidden;background:var(--bg)}
    .page-hero::before{
      content:'';position:absolute;z-index:0;top:-60px;right:-100px;width:500px;height:430px;
      background:var(--primary-light);border-radius:60% 0 50% 40%;
    }
    .page-hero .container{position:relative;z-index:2}
    .breadcrumb-seo{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem;font-size:.86rem;color:var(--muted);margin-bottom:1rem}
    .breadcrumb-seo a{color:var(--muted);transition:color .2s}
    .breadcrumb-seo a:hover{color:var(--primary)}
    .breadcrumb-seo i{font-size:.75rem}
    .page-hero h1{font-size:clamp(1.9rem,3.2vw + .6rem,3rem);line-height:1.22;font-weight:700;margin:0 0 1.3rem;letter-spacing:-.01em}
    .hero-lead{color:var(--muted);font-size:1.05rem;max-width:560px;margin-bottom:1.8rem;line-height:1.8}
    .hero-list{display:flex;flex-wrap:wrap;gap:1.6rem;margin-top:2rem}
    .hero-list .stat-num{display:block;font-size:1.45rem;font-weight:800;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.2}
    .hero-list .stat-label{font-size:.83rem;color:var(--muted)}

    .hero-visual{position:relative;display:flex;justify-content:flex-end}
    .hero-frame{
      width:100%;max-width:520px;border-radius:24px;overflow:hidden;
      background:#fff;border:1px solid var(--border);box-shadow:var(--shadow-hover);
      padding:.55rem;
    }
    .hero-frame .visual-main{border-radius:20px;overflow:hidden}
    .float-bubble{
      position:absolute;left:-1.2rem;top:6%;background:#fff;border:1px solid var(--border);
      box-shadow:var(--shadow-hover);border-radius:16px;padding:.8rem 1rem;
      display:flex;align-items:center;gap:.7rem;max-width:220px;
    }
    .float-bubble .bubble-icon{background:var(--action);color:#fff;width:34px;height:34px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:.85rem}
    .float-bubble strong{font-size:.9rem;display:block;line-height:1.3}
    .float-bubble span{font-size:.74rem;color:var(--muted)}
    .float-bubble.bottom{top:auto;bottom:12%;left:-3rem}

    /* ---------- 版本速览 ---------- */
    .version-hero-card{
      border-radius:20px;background:var(--dark);color:#fff;position:relative;overflow:hidden;
      padding:2.3rem;height:100%;
    }
    .version-hero-card::after{content:'';position:absolute;right:-80px;top:-50px;width:220px;height:220px;background:rgba(255,255,255,.05);border-radius:50%}
    .version-hero-card .ver-tag{background:#fff;color:var(--dark);border-radius:999px;font-size:.76rem;padding:.28rem 1rem;font-weight:700;display:inline-block;margin-bottom:1.2rem}
    .version-hero-card h3{font-size:1.55rem;font-weight:700;margin-bottom:.9rem}
    .version-hero-card p{color:rgba(255,255,255,.78);font-size:.95rem}
    .version-hero-card .btn-light{margin-top:1rem}

    .version-side-card{background:#fff;border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);padding:1.6rem;height:100%}
    .version-side-card .side-top{display:flex;align-items:center;gap:.8rem;border-bottom:1px solid var(--border);padding-bottom:1rem;margin-bottom:1rem}
    .version-side-card .icon-sm{width:38px;height:38px;border-radius:12px;background:var(--primary-light);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:1rem}
    .version-side-card h3{font-size:1.05rem;margin:0;font-weight:700}
    .version-side-card small{color:var(--muted);font-size:.75rem}
    .check-line{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.65rem}
    .check-line li{font-size:.92rem;display:flex;gap:.6rem;color:var(--text);align-items:flex-start}
    .check-line li i{color:var(--accent);margin-top:.28rem;font-size:.85rem}

    .small-version-line{
      background:#fff;border:1px solid var(--border);border-radius:16px;
      box-shadow:var(--shadow);padding:1.3rem 1.5rem;display:flex;align-items:center;
      gap:1.4rem;flex-wrap:wrap;transition:all .25s ease;
    }
    .small-version-line:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
    .small-version-line .vnum{font-size:1.1rem;font-weight:800;color:var(--primary);min-width:80px}
    .small-version-line p{flex:1;margin:0;font-size:.93rem;color:var(--muted)}
    .small-version-line .more{font-size:.85rem;color:var(--primary);font-weight:600}

    /* ---------- timeline ---------- */
    .section-lighter{background:var(--primary-light)}
    .timeline-side{position:sticky;top:120px}
    .timeline-wrap{margin:0;padding:0;list-style:none;position:relative}
    .timeline-wrap::before{content:'';position:absolute;left:8px;top:8px;bottom:0;width:2px;background:rgba(28,109,150,.18)}
    .timeline-item{position:relative;padding:0 0 2rem 2.6rem}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-dot{position:absolute;left:0;top:6px;width:18px;height:18px;border-radius:50%;background:#fff;border:5px solid var(--accent);box-shadow:0 0 0 4px rgba(47,163,160,.18)}
    .timeline-item h4{font-size:1.06rem;font-weight:700;margin-bottom:.25rem}
    .timeline-item .time-label{font-size:.79rem;color:var(--action);font-weight:700;display:block;margin-bottom:.2rem}
    .timeline-item p{font-size:.92rem;color:var(--muted);margin:0}

    /* ---------- coverage ---------- */
    .coverage-figure{border-radius:24px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border)}
    .coverage-card{background:#fff;border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);padding:1.4rem;transition:all .25s ease;height:100%}
    .coverage-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
    .coverage-card h4{font-size:1.02rem;font-weight:700;margin:0 0 .4rem}
    .coverage-card p{font-size:.9rem;color:var(--muted);margin:0}

    /* ---------- how to get ---------- */
    .info-banner{
      border-radius:26px;overflow:hidden;position:relative;background:var(--dark);
      padding:2.8rem 2rem;color:#fff;
    }
    .info-banner .bg-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.16}
    .info-banner>*{position:relative;z-index:2}
    .step-card{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:1.2rem 1.3rem;height:100%;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}
    .step-num{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;background:var(--action);border-radius:50%;font-size:.82rem;font-weight:700;margin-bottom:.65rem}
    .step-card h4{font-size:1.02rem;margin-bottom:.45rem;font-weight:700}
    .step-card p{margin:0;font-size:.88rem;color:rgba(255,255,255,.72);line-height:1.7}

    /* ---------- FAQ ---------- */
    .faq-side{position:sticky;top:120px}
    .accordion-custom .accordion-item{border:1px solid var(--border);border-radius:16px!important;overflow:hidden;margin-bottom:.9rem;box-shadow:0 1px 2px rgba(16,42,60,.03)}
    .accordion-custom .accordion-button{
      padding:1.1rem 1.3rem;font-weight:600;font-size:1rem;color:var(--text);
      background:#fff;box-shadow:none;border-radius:16px!important;
      border-left:3px solid transparent;
    }
    .accordion-custom .accordion-button:not(.collapsed){background:var(--primary-light);color:var(--primary-dark);border-left-color:var(--primary)}
    .accordion-custom .accordion-button::before{
      counter-increment:faq;content:"0" counter(faq);
      margin-right:.9rem;font-size:.78rem;color:var(--muted);font-weight:700;
      background:var(--primary-light);border-radius:8px;min-width:34px;height:34px;
      display:inline-flex;align-items:center;justify-content:center;
    }
    .accordion-custom .accordion-button:not(.collapsed)::before{background:var(--primary);color:#fff}
    .accordion-custom .accordion-button:focus{box-shadow:none}
    .accordion-item{counter-increment:faq}
    .accordion-body{padding:0 1.3rem 1.2rem;font-size:.94rem;color:var(--muted)}

    /* ---------- 相关分类 ---------- */
    .related-card{
      background:#fff;border:1px solid var(--border);border-radius:20px;
      box-shadow:var(--shadow);padding:1.5rem 1.7rem;display:flex;flex-direction:column;
      gap:.7rem;height:100%;position:relative;overflow:hidden;transition:all .28s ease;
    }
    .related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
    .related-card .icon-big{width:64px;height:64px;border-radius:18px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.6rem}
    .related-card h4{font-weight:700;font-size:1.14rem;margin-bottom:.2rem}
    .related-card p{color:var(--muted);font-size:.93rem;margin:0}
    .related-card .more-link{color:var(--primary);font-weight:600;font-size:.9rem;margin-top:auto}
    .related-card.is-accent{background:var(--dark);color:#fff}
    .related-card.is-accent p{color:rgba(255,255,255,.72)}
    .related-card.is-accent .more-link{color:#fff}
    .related-card.is-accent .icon-big{background:rgba(255,255,255,.13);color:#fff}

    /* ---------- Final CTA ---------- */
    .final-cta-section{padding:var(--section-pad) 0;background:var(--dark);color:#fff;position:relative;overflow:hidden}
    .final-cta-section::after{content:'';position:absolute;right:-180px;top:-100px;width:420px;height:420px;border-radius:50%;background:rgba(47,163,160,.1)}
    .final-cta-inner{position:relative;z-index:2}
    .final-cta-section h2{font-size:clamp(1.6rem,2.2vw + .6rem,2.3rem);font-weight:700;margin-bottom:.8rem;line-height:1.35}
    .final-cta-section .lead2{color:rgba(255,255,255,.72);margin-bottom:1.5rem;max-width:560px}
    .cta-form{background:rgba(255,255,255,.08);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.12);border-radius:22px;padding:1.4rem}
    .cta-form label{font-size:.86rem;font-weight:500;color:rgba(255,255,255,.82);margin-bottom:.3rem}
    .cta-form .form-control,.cta-form .form-select,.cta-form textarea{
      background:rgba(255,255,255,.96);border:1px solid rgba(255,255,255,.2);border-radius:12px;
      padding:.6rem .8rem;font-size:.95rem;
    }
    .cta-form .form-control:focus,.cta-form textarea:focus{border-color:var(--accent);box-shadow:0 0 0 .2rem rgba(47,163,160,.18)}

    /* ---------- Footer ---------- */
    .site-footer{background:#0b2f42;color:rgba(255,255,255,.68);padding:3.5rem 0 2rem;font-size:.92rem}
    .site-footer a{color:rgba(255,255,255,.68)}
    .site-footer a:hover{color:#fff;text-decoration:none}
    .footer-brand .logo-main{color:#fff}
    .footer-brand .text-muted{color:rgba(255,255,255,.48)!important}
    .footer-brand p{margin-top:1rem;line-height:1.8}
    .footer-heading{font-size:.95rem;color:#fff;font-weight:700;margin-bottom:1rem}
    .footer-links{list-style:none;margin:0;padding:0;display:grid;gap:.5rem}
    .footer-links li a{font-size:.93rem;transition:all .2s}
    .footer-contact{display:flex;flex-direction:column;gap:.45rem}
    .footer-contact i{width:24px;color:var(--accent)}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:2.5rem;padding-top:1.4rem;display:flex;flex-wrap:wrap;justify-content:space-between;gap:.5rem;font-size:.82rem;color:rgba(255,255,255,.44)}
    .footer-bottom a{color:rgba(255,255,255,.68)}
    .footer-bottom a:hover{color:#fff}

    /* ---------- floating ---------- */
    .float-group{position:fixed;right:18px;bottom:22px;z-index:1020;display:flex;align-items:flex-end;gap:.7rem}
    .back-top-btn{
      width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--border);
      box-shadow:var(--shadow);color:var(--primary);display:flex;align-items:center;justify-content:center;
      transition:all .2s ease;
    }
    .back-top-btn:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
    .float-chat{
      width:100%;display:flex;align-items:center;gap:.5rem;background:#fff;color:var(--primary-dark);
      border:1px solid var(--border);box-shadow:var(--shadow-hover);border-radius:999px;
      padding:.55rem 1.15rem;font-size:.9rem;font-weight:700;transition:all .2s ease;
    }
    .float-chat:hover{background:var(--action);color:#fff;border-color:var(--action)}

    /* ---------- Responsive ---------- */
    @media (max-width: 991.98px){
      .navbar-collapse{position:fixed;top:0;right:0;bottom:0;width:min(320px,82vw);background:#fff;box-shadow:-12px 0 36px rgba(16,42,60,.15);padding:1.5rem;z-index:1050;overflow-y:auto;transition:transform .3s ease}
      .navbar-collapse.show{transform:none}
      .navbar-collapse:not(.show){display:block;transform:translateX(100%)}
      .nav-actions .btn-accent{margin-left:auto}
      .hero-visual{margin-top:2rem;justify-content:center}
      .timeline-side{position:static;margin-bottom:1.2rem}
      .faq-side{position:static;margin-bottom:1rem}
    }
    @media (max-width: 767.98px){
      .btn-action,.btn-outline-primary{width:100%;justify-content:center}
      .page-hero{padding:3rem 0 3rem}
      .float-bubble{display:none}
      .section-title br{display:none}
      .footer-bottom{flex-direction:column;text-align:center;justify-content:center}
      .navbar-brand .logo-main{font-size:1rem;white-space:normal}
      .logo-sub{font-size:.66rem}
    }
    @media (max-width: 575.98px){
      body{font-size:.94rem}
      .container{padding-left:1rem;padding-right:1rem}
      .hero-list{gap:1rem;justify-content:space-between}
      .hero-list .stat-num{font-size:1.1rem}
      .site-footer{padding-top:2.5rem}
    }