/* roulang page: index */
:root{
  --primary-start:#0AA5B5;
  --primary-end:#0B4F6C;
  --primary-gradient:linear-gradient(135deg,#0AA5B5 0%,#0B4F6C 100%);
  --page-bg:#F7FAF9;
  --card-bg:#FFFFFF;
  --accent:#FF7043;
  --teal-light:#8CD4D4;
  --teal-bg:#EAF6F6;
  --text-dark:#0B2B3C;
  --text-secondary:#3E5A6B;
  --text-muted:#6B828F;
  --border:#D9E8E8;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-card:0 8px 30px rgba(11,43,60,.07);
  --shadow-hover:0 14px 44px rgba(11,43,60,.13);
  --font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --container:1200px;
  --gap:40px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-family);
  background:var(--page-bg);
  color:var(--text-dark);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--text-dark);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--primary-start);}
img{max-width:100%;height:auto;display:block;}
input,textarea,button{font-family:inherit;font-size:1rem;outline:none;}
.container{max-width:var(--container);margin:0 auto;padding:0 40px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 28px;border-radius:12px;font-weight:600;line-height:1.4;
  text-decoration:none;border:0;cursor:pointer;transition:all .25s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary-gradient);color:#fff;
  box-shadow:0 4px 16px rgba(10,165,181,.3);
}
.btn-primary:hover{
  background:linear-gradient(135deg,#0895a5,#093e56);
  color:#fff;transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(10,165,181,.4);
}
.btn-primary:active{transform:scale(.98);}
.btn-primary:focus-visible{
  outline:2px solid var(--primary-start);outline-offset:2px;
  box-shadow:0 0 0 4px rgba(10,165,181,.2);
}
.btn-outline{
  background:#fff;border:1.5px solid var(--primary-start);color:var(--text-dark);
}
.btn-outline:hover{
  background:var(--teal-bg);color:var(--primary-start);transform:translateY(-2px);
}
.btn-outline:active{transform:scale(.98);}
.btn-outline:focus-visible{
  outline:2px solid var(--primary-start);outline-offset:2px;
  box-shadow:0 0 0 4px rgba(10,165,181,.2);
}
.btn-sm{padding:10px 20px;font-size:.9rem;}
.tag{
  display:inline-block;padding:5px 14px;border-radius:999px;
  background:rgba(140,212,212,.22);color:var(--text-dark);
  font-size:.75rem;font-weight:600;letter-spacing:.02em;
}
.section{position:relative;padding:5rem 0;}
.section-head{max-width:720px;margin-bottom:2.8rem;}
.section-head .tag{margin-bottom:14px;}
.section-head h2{
  font-size:clamp(1.4rem,2.2vw,1.9rem);
  font-weight:700;line-height:1.35;margin-bottom:12px;color:var(--text-dark);
}
.section-head p{color:var(--text-secondary);font-size:.95rem;line-height:1.7;}
.section-center{margin-left:auto;margin-right:auto;text-align:center;}

.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .3s ease;
}
.site-header.scrolled{box-shadow:0 4px 20px rgba(11,43,60,.06);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;
}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--text-dark);}
.logo:hover{color:var(--primary-start);}
.logo-mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--primary-gradient);
  display:inline-flex;align-items:center;justify-content:center;color:#fff;
}
.logo-mark svg{width:22px;height:22px;}
.logo-text{letter-spacing:-.01em;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  padding:8px 16px;border-radius:10px;font-weight:500;font-size:.92rem;
  color:var(--text-secondary);transition:all .25s ease;position:relative;
}
.main-nav a:hover{
  color:var(--primary-start);background:rgba(10,165,181,.06);
}
.main-nav a.active{
  color:var(--text-dark);font-weight:600;background:rgba(10,165,181,.1);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;}

.hero{
  position:relative;
  background:var(--primary-gradient);
  background-image:
    linear-gradient(135deg, rgba(10,165,181,.92) 0%, rgba(11,79,108,.96) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  color:#fff;padding:6rem 0 5rem;overflow:hidden;
}
.hero::before{
  content:'';position:absolute;top:-120px;right:-80px;width:380px;height:380px;
  border:2px solid rgba(255,255,255,.12);border-radius:50%;
}
.hero::after{
  content:'';position:absolute;bottom:-60px;left:-60px;width:240px;height:240px;
  border:2px solid rgba(255,255,255,.08);border-radius:50%;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;gap:4.5rem;align-items:center;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);
  border-radius:999px;padding:6px 18px;font-size:.8rem;font-weight:500;color:#EAF7F7;
  margin-bottom:1.4rem;backdrop-filter:blur(8px);
}
.hero-badge svg{width:14px;height:14px;stroke:#fff;}
.hero h1{
  font-size:clamp(1.8rem,3.4vw,2.8rem);
  font-weight:800;line-height:1.3;margin-bottom:1.2rem;
  color:#fff;letter-spacing:-.01em;
}
.hero-desc{
  font-size:1.05rem;color:rgba(255,255,255,.85);max-width:520px;
  line-height:1.8;margin-bottom:1.8rem;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:2.5rem;}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:24px;padding-top:1.5rem;
  border-top:1px solid rgba(255,255,255,.2);
}
.trust-item{display:flex;align-items:center;gap:8px;font-size:.85rem;color:rgba(255,255,255,.9);}
.trust-item svg{width:18px;height:18px;stroke:var(--teal-light);}

.hero-preview{position:relative;z-index:2;}
.preview-card{
  background:rgba(255,255,255,.95);
  border:1px solid rgba(255,255,255,.5);
  border-radius:20px;padding:0;overflow:hidden;
  box-shadow:0 20px 50px rgba(11,43,60,.25);
  backdrop-filter:blur(10px);
  max-width:420px;margin-left:auto;
}
.preview-top{
  display:flex;align-items:center;gap:10px;
  background:rgba(10,165,181,.08);
  padding:14px 20px;border-bottom:1px solid rgba(10,165,181,.12);
}
.preview-dots{display:flex;gap:4px;}
.preview-dots span{width:8px;height:8px;border-radius:50%;}
.preview-dots span:nth-child(1){background:#FF7043;}
.preview-dots span:nth-child(2){background:#F5B04C;}
.preview-dots span:nth-child(3){background:#57B894;}
.preview-top-title{font-size:.85rem;font-weight:600;color:var(--text-dark);margin-left:4px;}
.preview-body{padding:26px 28px;}
.preview-body label{display:block;font-size:.82rem;font-weight:600;color:var(--text-secondary);margin-bottom:6px;}
.preview-body input{
  width:100%;height:46px;border:1px solid var(--border);border-radius:12px;
  padding:0 14px;font-size:.9rem;margin-bottom:18px;color:var(--text-dark);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.preview-body input:focus{border-color:var(--primary-start);box-shadow:0 0 0 4px rgba(10,165,181,.15);}
.preview-body input::placeholder{color:#9BB0BA;}
.preview-btn{
  width:100%;height:46px;border:0;border-radius:12px;cursor:pointer;
  background:var(--primary-gradient);color:#fff;font-weight:600;font-size:.92rem;
  transition:all .25s ease;box-shadow:0 4px 16px rgba(10,165,181,.3);
}
.preview-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(10,165,181,.4);}
.preview-btn:active{transform:scale(.98);}
.preview-line{text-align:center;font-size:.8rem;color:var(--text-muted);margin:16px 0 12px;position:relative;}
.preview-line::before,.preview-line::after{
  content:'';position:absolute;top:50%;width:38%;height:1px;background:var(--border);
}
.preview-line::before{left:0;}
.preview-line::after{right:0;}
.preview-options{display:flex;gap:12px;justify-content:center;}
.preview-options span{
  font-size:.8rem;color:var(--text-secondary);background:var(--teal-bg);
  padding:7px 16px;border-radius:999px;cursor:pointer;transition:background .25s ease;
}
.preview-options span:hover{background:rgba(140,212,212,.35);}

.services-section{background:var(--page-bg);}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.service-card{
  background:var(--card-bg);border-radius:var(--radius-lg);
  padding:34px 30px;position:relative;overflow:hidden;
  box-shadow:var(--shadow-card);border:1px solid transparent;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.service-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--teal-light);
}
.service-card .service-num{
  position:absolute;top:20px;right:24px;font-size:2.6rem;font-weight:800;
  color:rgba(10,165,181,.1);line-height:1;
}
.service-icon{
  width:56px;height:56px;border-radius:14px;
  background:var(--primary-gradient);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;margin-bottom:18px;
}
.service-icon svg{width:26px;height:26px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.service-card:nth-child(2) .service-icon{background:linear-gradient(135deg,#FF7043,#F08A5D);}
.service-card:nth-child(3) .service-icon{background:linear-gradient(135deg,#57B894,#3E8E7E);}
.service-card h3{font-size:1.15rem;font-weight:700;margin-bottom:10px;color:var(--text-dark);}
.service-card p{font-size:.92rem;color:var(--text-secondary);line-height:1.7;margin-bottom:18px;}
.service-link{
  display:inline-flex;align-items:center;gap:6px;font-size:.88rem;font-weight:600;
  color:var(--text-dark);transition:all .25s ease;
}
.service-link:hover{color:var(--primary-start);gap:10px;}
.service-link svg{width:14px;height:14px;}

.stats-section{
  background:linear-gradient(135deg,#0B4F6C,#0B2B3C);
  color:#fff;padding:5rem 0;
}
.stats-section .section-head h2{color:#fff;}
.stats-section .section-head p{color:rgba(255,255,255,.7);}
.stats-section .tag{background:rgba(140,212,212,.18);color:var(--teal-light);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-item{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);
  border-radius:20px;padding:36px 24px 28px;text-align:center;
  transition:transform .3s ease,background .3s ease;
}
.stat-item:hover{transform:translateY(-4px);background:rgba(255,255,255,.1);}
.stat-num{
  font-size:clamp(1.6rem,4vw,2.6rem);font-weight:800;
  color:#fff;line-height:1.2;margin-bottom:4px;
}
.stat-num em{font-style:normal;color:var(--teal-light);}
.stat-label{font-size:.85rem;color:rgba(255,255,255,.7);line-height:1.5;}
.stat-sub{font-size:.74rem;color:rgba(255,255,255,.45);margin-top:8px;}

.cases-section{background:var(--page-bg);}
.case-item{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  margin-bottom:4rem;
}
.case-item:last-child{margin-bottom:0;}
.case-item:nth-child(even){direction:rtl;}
.case-item:nth-child(even)>*{direction:ltr;}
.case-media{
  border-radius:16px;overflow:hidden;box-shadow:var(--shadow-card);
  aspect-ratio:4/3;position:relative;background:var(--teal-bg);
}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.case-media:hover img{transform:scale(1.04);}
.case-body h3{font-size:1.3rem;font-weight:700;margin-bottom:10px;color:var(--text-dark);}
.case-body .case-role{
  display:inline-block;font-size:.8rem;font-weight:600;color:var(--primary-start);
  background:rgba(10,165,181,.1);padding:4px 12px;border-radius:999px;margin-bottom:14px;
}
.case-body p{color:var(--text-secondary);font-size:.94rem;line-height:1.75;margin-bottom:20px;}
.case-metrics{display:flex;flex-wrap:wrap;gap:20px;margin-bottom:24px;}
.case-metric{background:var(--card-bg);box-shadow:var(--shadow-card);border-radius:14px;padding:14px 20px;text-align:center;min-width:100px;}
.case-metric strong{
  display:block;font-size:1.35rem;font-weight:800;color:var(--primary-start);line-height:1.2;
}
.case-metric span{font-size:.75rem;color:var(--text-muted);}

.solutions-section{
  background:linear-gradient(180deg,#EAF6F6 0%,#F7FAF9 100%);
}
.solutions-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.solution-card{
  background:var(--card-bg);border-radius:var(--radius-lg);
  padding:36px 34px;box-shadow:var(--shadow-card);
  border:1px solid transparent;transition:all .3s ease;
  display:flex;flex-direction:column;
}
.solution-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--teal-light);}
.solution-card:nth-child(1){border-top:4px solid var(--primary-start);}
.solution-card:nth-child(2){border-top:4px solid var(--accent);}
.solution-tag{font-size:.78rem;font-weight:600;color:var(--primary-start);margin-bottom:10px;}
.solution-card:nth-child(2) .solution-tag{color:var(--accent);}
.solution-card h3{font-size:1.3rem;font-weight:700;margin-bottom:6px;color:var(--text-dark);}
.solution-for{font-size:.85rem;color:var(--text-muted);margin-bottom:18px;}
.solution-points{list-style:none;margin-bottom:24px;flex-grow:1;}
.solution-points li{
  display:flex;align-items:flex-start;gap:10px;
  padding:7px 0;font-size:.92rem;color:var(--text-secondary);
}
.solution-points li::before{
  content:'';width:16px;height:16px;border-radius:50%;flex-shrink:0;
  background:rgba(10,165,181,.14);
  border:2px solid var(--primary-start);margin-top:5px;
}
.solution-card:nth-child(2) .solution-points li::before{
  background:rgba(255,112,67,.14);border-color:var(--accent);
}
.solution-link{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;
  font-size:.9rem;color:var(--text-dark);transition:all .25s ease;
}
.solution-link:hover{color:var(--primary-start);gap:10px;}
.solution-link svg{width:14px;height:14px;}

.faq-section{background:var(--page-bg);}
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--card-bg);border-radius:16px;
  border-left:4px solid var(--primary-gradient);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:background .3s ease,box-shadow .3s ease;
}
.faq-item:hover{box-shadow:var(--shadow-hover);}
.faq-item.open{background:#F0FAFA;}
.faq-question{
  display:flex;align-items:center;justify-content:space-between;
  width:100%;background:none;border:0;cursor:pointer;
  padding:20px 24px;font-size:1rem;font-weight:600;color:var(--text-dark);
  text-align:left;transition:color .25s ease;
}
.faq-question:hover{color:var(--primary-start);}
.faq-icon{
  width:24px;height:24px;border-radius:50%;flex-shrink:0;
  background:rgba(10,165,181,.12);color:var(--primary-start);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:1rem;font-weight:700;transition:transform .3s ease,background .3s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--primary-start);color:#fff;}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 24px;
}
.faq-item.open .faq-answer{max-height:300px;padding-bottom:22px;}
.faq-answer p{font-size:.92rem;color:var(--text-secondary);line-height:1.7;}

.news-section{background:var(--teal-bg);}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.news-card{
  display:block;background:var(--card-bg);border-radius:16px;
  padding:28px 28px 24px;box-shadow:var(--shadow-card);
  border:1px solid transparent;transition:all .3s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--teal-light);}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.news-tag{font-size:.75rem;font-weight:600;color:var(--primary-start);background:rgba(10,165,181,.1);padding:4px 12px;border-radius:999px;}
.news-time{font-size:.78rem;color:var(--text-muted);}
.news-card h3{
  font-size:1.05rem;font-weight:700;color:var(--text-dark);
  margin-bottom:8px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card p{
  font-size:.88rem;color:var(--text-secondary);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-empty{
  grid-column:1/-1;text-align:center;padding:48px 20px;
  color:var(--text-muted);font-size:.95rem;
  background:rgba(255,255,255,.6);border-radius:16px;
}

.contact-section{background:var(--page-bg);}
.contact-wrap{
  background:var(--teal-bg);border-radius:24px;
  display:grid;grid-template-columns:1fr 1fr;gap:0;overflow:hidden;
}
.contact-info{padding:44px 44px;background:var(--teal-bg);}
.contact-info h3{font-size:1.3rem;font-weight:700;margin-bottom:22px;color:var(--text-dark);}
.contact-list{list-style:none;margin-bottom:28px;}
.contact-list li{
  display:flex;align-items:flex-start;gap:14px;padding:10px 0;
  font-size:.92rem;color:var(--text-secondary);
}
.contact-list svg{
  width:20px;height:20px;flex-shrink:0;stroke:var(--primary-start);
  fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;
  margin-top:3px;
}
.contact-hours{
  background:rgba(255,255,255,.7);border-radius:12px;padding:16px 20px;
  font-size:.85rem;color:var(--text-secondary);
}
.contact-hours strong{display:block;font-weight:700;color:var(--text-dark);margin-bottom:4px;}
.contact-form{padding:44px 44px;background:var(--card-bg);}
.contact-form label{display:block;font-size:.85rem;font-weight:600;color:var(--text-dark);margin-bottom:6px;}
.contact-form input[type="text"],
.contact-form input[type="tel"],
.contact-form textarea{
  width:100%;border:1px solid var(--border);border-radius:12px;
  padding:0 14px;font-size:.92rem;color:var(--text-dark);
  transition:border-color .25s ease,box-shadow .25s ease;
  margin-bottom:18px;background:#fff;
}
.contact-form input[type="text"],.contact-form input[type="tel"]{height:48px;}
.contact-form textarea{height:110px;padding:14px;resize:vertical;}
.contact-form input:focus,.contact-form textarea:focus{
  border-color:var(--primary-start);box-shadow:0 0 0 4px rgba(10,165,181,.15);
}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:#9BB0BA;}

.site-footer{
  background:#0B2B3C;color:#D0DDE4;padding:56px 0 32px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:40px;}
.footer-logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.2rem;color:#fff;margin-bottom:14px;}
.footer-logo .logo-mark{width:32px;height:32px;border-radius:9px;background:var(--primary-gradient);display:inline-flex;align-items:center;justify-content:center;}
.footer-logo .logo-mark svg{width:18px;height:18px;}
.footer-about{font-size:.86rem;color:rgba(255,255,255,.6);line-height:1.7;}
.footer-col h4{
  font-size:.9rem;font-weight:600;color:#fff;margin-bottom:16px;
  letter-spacing:.03em;
}
.footer-col ul{list-style:none;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:.85rem;color:rgba(255,255,255,.65);transition:color .25s ease;}
.footer-col ul a:hover{color:var(--teal-light);}
.footer-contact li{
  display:flex;align-items:center;gap:10px;font-size:.85rem;
  color:rgba(255,255,255,.65);margin-bottom:12px;
}
.footer-contact svg{width:16px;height:16px;stroke:var(--teal-light);flex-shrink:0;fill:none;stroke-width:1.8;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding-top:24px;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;
}
.footer-bottom p{font-size:.8rem;color:rgba(255,255,255,.4);}
.footer-links a{font-size:.8rem;color:rgba(255,255,255,.4);margin-left:18px;transition:color .25s ease;}
.footer-links a:hover{color:var(--teal-light);}

.mobile-tab{
  display:none;position:fixed;bottom:0;left:0;right:0;z-index:1000;
  background:#fff;border-top:1px solid var(--border);height:64px;
  justify-content:space-around;align-items:center;
  box-shadow:0 -4px 20px rgba(11,43,60,.06);
}
.tab-item{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;font-size:.7rem;color:var(--text-muted);
  transition:color .25s ease;padding:4px 8px;border-radius:10px;
}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.tab-item.active{color:var(--primary-start);font-weight:600;}
.tab-item:hover{color:var(--primary-start);}

@media (max-width:1024px){
  .container{padding:0 28px;}
  .hero-inner{grid-template-columns:1fr;gap:2.5rem;}
  .hero-preview .preview-card{margin:0 auto;max-width:460px;}
  .services-grid{grid-template-columns:repeat(2,1fr);}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .case-item{grid-template-columns:1fr;gap:24px;}
  .case-item:nth-child(even){direction:ltr;}
  .solutions-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .contact-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn{display:none;}
  .header-inner{height:64px;}
  .section{padding:3.5rem 0;}
  .services-grid{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
  .contact-info,.contact-form{padding:30px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .mobile-tab{display:flex;}
  body{padding-bottom:64px;}
  .hero{padding:4rem 0 3.5rem;}
}
@media (max-width:520px){
  .hero h1{font-size:1.7rem;}
  .hero-desc{font-size:.95rem;}
  .hero-trust{flex-direction:column;gap:12px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .stat-item{padding:24px 14px 20px;}
  .case-metrics{gap:10px;}
  .case-metric{min-width:80px;padding:10px 14px;}
  .footer-bottom{flex-direction:column;text-align:center;}
  .footer-links{margin-top:6px;}
}

/* roulang page: category1 */
:root {
  --primary: #0AA5B5;
  --primary-dark: #0B4F6C;
  --gradient: linear-gradient(135deg, #0AA5B5 0%, #0B4F6C 100%);
  --coral: #FF7043;
  --accent: #8CD4D4;
  --ink: #0B2B3C;
  --text: #3E5A6B;
  --muted: #6B828F;
  --bg: #F7FAF9;
  --card: #FFFFFF;
  --line: #D9E8E8;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 12px;
  --shadow: 0 8px 30px rgba(11, 43, 60, .07);
  --shadow-lg: 0 14px 44px rgba(11, 43, 60, .13);
  --content-max: 1200px;
  --transition: all .25s cubic-bezier(.4, 0, .2, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--ink);
  text-decoration: none;
  transition: color .2s ease;
}

a:hover {
  color: var(--primary);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea {
  font-family: inherit;
}

.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 40px;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(10, 165, 181, .10);
  color: var(--primary-dark);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.section-head {
  max-width: 740px;
  margin-bottom: 48px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head.left {
  margin-bottom: 32px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  font-weight: 800;
  line-height: 1.25;
  margin-top: 14px;
  color: var(--ink);
  letter-spacing: -.01em;
}

.section-head p {
  color: var(--text);
  font-size: 1.02rem;
  margin-top: 12px;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: .95rem;
  line-height: 1;
  transition: var(--transition);
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn:focus-visible,
.nav-toggle:focus-visible,
.mobile-tab a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 16px rgba(10, 165, 181, .35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(10, 165, 181, .45);
  color: #fff;
}

.btn-primary:active {
  transform: scale(.97);
}

.btn-secondary {
  background: #fff;
  border: 1.5px solid var(--primary);
  color: var(--primary-dark);
}

.btn-secondary:hover {
  background: #EAF7F7;
  transform: translateY(-2px);
  color: var(--primary-dark);
}

.btn-secondary:active {
  transform: scale(.97);
}

.btn-light {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 8px 24px rgba(11, 43, 60, .2);
}

.btn-light:hover {
  background: #EAF7F7;
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(11, 43, 60, .25);
  color: var(--primary-dark);
}

.btn-light:active {
  transform: scale(.97);
}

.btn-outline-light {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, .75);
  color: #fff;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, .14);
  color: #fff;
}

.btn-outline-light:active {
  transform: scale(.97);
}

.btn-sm {
  padding: 9px 22px;
  font-size: .875rem;
}

.btn-lg {
  padding: 16px 38px;
  font-size: 1.05rem;
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s ease;
}

.site-header.scrolled {
  box-shadow: 0 6px 24px rgba(11, 43, 60, .08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  height: 72px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--ink);
  flex-shrink: 0;
}

.logo:hover {
  color: var(--ink);
}

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--gradient);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.logo-mark svg {
  width: 20px;
  height: 20px;
}

.main-nav {
  display: flex;
  gap: 30px;
}

.main-nav a {
  font-weight: 600;
  font-size: .95rem;
  position: relative;
  padding: 8px 0;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--gradient);
  border-radius: 2px;
  transition: width .25s ease;
}

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

.main-nav a:hover::after {
  width: 100%;
}

.main-nav a.active {
  color: var(--primary-dark);
}

.main-nav a.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #F0FAFA;
  color: var(--ink);
  transition: var(--transition);
}

.nav-toggle:hover {
  background: var(--accent);
}

/* ========== Category Hero ========== */
.category-hero {
  position: relative;
  background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  padding: 110px 0 100px;
}

.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(11, 43, 60, .94) 10%, rgba(11, 79, 108, .82) 55%, rgba(10, 165, 181, .55) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .16);
  border: 1px solid rgba(255, 255, 255, .3);
  color: #fff;
  font-size: .8rem;
  font-weight: 600;
  backdrop-filter: blur(6px);
}

.hero-badge svg {
  width: 15px;
  height: 15px;
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  margin-top: 20px;
  max-width: 780px;
  letter-spacing: -.01em;
}

.hero-sub {
  color: rgba(255, 255, 255, .9);
  font-size: 1.1rem;
  line-height: 1.75;
  max-width: 640px;
  margin-top: 18px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 38px;
  flex-wrap: wrap;
}

.hero-trust {
  display: flex;
  gap: 30px;
  margin-top: 48px;
  color: rgba(255, 255, 255, .88);
  font-size: .875rem;
  flex-wrap: wrap;
}

.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-trust svg {
  width: 17px;
  height: 17px;
  color: var(--accent);
}

/* ========== Guide List ========== */
.guide-list-section {
  padding: 84px 0;
}

.guide-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.guide-item {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.guide-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity .25s;
}

.guide-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.guide-item:hover::before {
  opacity: 1;
}

.guide-num {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--gradient);
  color: #fff;
  font-size: 1.1rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: .02em;
  box-shadow: 0 4px 14px rgba(10, 165, 181, .3);
}

.guide-content {
  flex: 1;
  min-width: 0;
}

.guide-title {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}

.guide-summary {
  color: var(--text);
  font-size: .95rem;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.guide-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 14px;
  font-size: .825rem;
  color: var(--muted);
}

.guide-link {
  color: var(--primary-dark);
  font-weight: 700;
  font-size: .875rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.guide-link:hover {
  color: var(--primary);
}

.guide-link svg {
  width: 15px;
  height: 15px;
  transition: transform .2s;
}

.guide-link:hover svg {
  transform: translateX(3px);
}

/* ========== Scene Section ========== */
.scene-section {
  background: #EAF6F6;
  padding: 84px 0;
}

.scene-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.scene-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.scene-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.scene-item {
  display: flex;
  gap: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 22px;
  transition: var(--transition);
}

.scene-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}

.scene-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.scene-icon svg {
  width: 22px;
  height: 22px;
}

.scene-item h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}

.scene-item p {
  font-size: .875rem;
  color: var(--text);
  line-height: 1.65;
}

/* ========== Process Section ========== */
.process-section {
  padding: 84px 0;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.process-step {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 30px 24px;
  text-align: center;
  position: relative;
  transition: var(--transition);
}

.process-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.step-num {
  width: 50px;
  height: 50px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: 0 6px 18px rgba(10, 165, 181, .3);
}

.process-step h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.process-step p {
  font-size: .875rem;
  color: var(--text);
  line-height: 1.65;
}

/* ========== FAQ Section ========== */
.faq-section {
  padding: 84px 0;
  background: var(--bg);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient);
}

.faq-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.faq-item[open] {
  background: #F0FAFA;
  border-color: var(--accent);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 30px 22px 32px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  transition: color .2s;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.55rem;
  font-weight: 400;
  color: var(--primary);
  transition: transform .3s;
  flex-shrink: 0;
  line-height: 1;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 30px 22px 32px;
  color: var(--text);
  font-size: .95rem;
  line-height: 1.75;
  border-top: 1px dashed var(--line);
  margin-top: -2px;
}

.faq-answer p {
  padding-top: 14px;
}

/* ========== CTA Section ========== */
.cta-section {
  position: relative;
  padding: 90px 0;
  background: var(--gradient);
  text-align: center;
  color: #fff;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .18);
}

.cta-section::after {
  content: "";
  position: absolute;
  left: -60px;
  bottom: -120px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .08);
}

.cta-section .container {
  position: relative;
  z-index: 2;
}

.cta-section h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  max-width: 720px;
  margin: 0 auto;
}

.cta-section p {
  color: rgba(255, 255, 255, .92);
  font-size: 1.05rem;
  margin-top: 16px;
}

.cta-btn {
  margin-top: 36px;
}

/* ========== Footer ========== */
.site-footer {
  background: #0B2B3C;
  color: #D0DDE4;
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.footer-logo:hover {
  color: #fff;
}

.footer-logo .logo-mark {
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .2);
}

.footer-logo .logo-mark svg {
  stroke: #fff;
}

.footer-about {
  font-size: .9rem;
  line-height: 1.75;
  color: #A0B8C4;
  max-width: 300px;
}

.site-footer h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 18px;
}

.site-footer ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.site-footer a {
  color: #C4D4DC;
  font-size: .9rem;
  transition: color .2s;
}

.site-footer a:hover {
  color: var(--accent);
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .875rem;
  color: #C4D4DC;
  line-height: 1.5;
}

.footer-contact svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .8rem;
  color: #8AA3AF;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: #8AA3AF;
}

.footer-links a:hover {
  color: var(--accent);
}

/* ========== Mobile Bottom Tab ========== */
.mobile-tab {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: rgba(255, 255, 255, .97);
  border-top: 1px solid var(--line);
  height: 64px;
  padding-bottom: env(safe-area-inset-bottom);
  box-shadow: 0 -4px 20px rgba(11, 43, 60, .06);
}

.mobile-tab-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  height: 100%;
}

.mobile-tab a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: .7rem;
  font-weight: 600;
  color: var(--muted);
  transition: var(--transition);
}

.mobile-tab a svg {
  width: 22px;
  height: 22px;
}

.mobile-tab a.active {
  color: var(--primary);
}

.mobile-tab a.active::before {
  content: "";
  position: absolute;
  top: 0;
  width: 32px;
  height: 3px;
  border-radius: 0 0 4px 4px;
  background: var(--gradient);
}

.mobile-tab a {
  position: relative;
  text-decoration: none;
}

.mobile-tab a:hover {
  color: var(--primary);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .container {
    padding: 0 28px;
  }

  .header-inner {
    gap: 20px;
  }

  .main-nav {
    gap: 20px;
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  body {
    padding-bottom: 64px;
  }

  .container {
    padding: 0 20px;
  }

  .header-inner {
    height: 64px;
  }

  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 20px 28px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 28px rgba(11, 43, 60, .1);
    display: none;
    z-index: 99;
    gap: 4px;
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 12px 0;
    font-size: 1rem;
    border-bottom: 1px solid #F3F8F8;
  }

  .main-nav a::after {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .header-actions .btn {
    padding: 8px 16px;
    font-size: .82rem;
  }

  .category-hero {
    padding: 64px 0 60px;
  }

  .hero-title {
    font-size: clamp(1.6rem, 5.5vw, 2.2rem);
  }

  .hero-sub {
    font-size: 1rem;
  }

  .hero-actions {
    gap: 12px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-trust {
    gap: 16px;
    margin-top: 32px;
    font-size: .8rem;
  }

  .guide-list-section, .scene-section, .process-section, .faq-section, .cta-section {
    padding: 60px 0;
  }

  .guide-item {
    flex-direction: column;
    gap: 16px;
    padding: 22px;
  }

  .guide-num {
    width: 44px;
    height: 44px;
    font-size: .95rem;
    border-radius: 12px;
  }

  .guide-meta {
    flex-wrap: wrap;
    gap: 10px;
  }

  .scene-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .scene-media img {
    aspect-ratio: 4 / 3;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .process-step {
    padding: 24px 20px;
  }

  .faq-item summary {
    padding: 18px 20px 18px 24px;
    font-size: .95rem;
  }

  .faq-item summary::after {
    font-size: 1.3rem;
  }

  .faq-answer {
    padding: 0 20px 18px 24px;
  }

  .cta-section {
    padding: 64px 0;
  }

  .cta-btn .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .mobile-tab {
    display: block;
  }

  .section-head {
    margin-bottom: 32px;
  }

  .section-head p {
    font-size: .95rem;
  }
}

@media (max-width: 520px) {
  .hero-actions .btn {
    padding: 13px 20px;
    font-size: .875rem;
  }

  .scene-item {
    padding: 18px;
  }

  .scene-icon {
    width: 40px;
    height: 40px;
  }

  .footer-contact li {
    font-size: .82rem;
  }
}

/* roulang page: article */
:root {
  --brand-start: #0AA5B5;
  --brand-end: #0B4F6C;
  --brand-gradient: linear-gradient(135deg, #0AA5B5 0%, #0B4F6C 100%);
  --bg: #F7FAF9;
  --card: #FFFFFF;
  --accent: #FF7043;
  --accent-soft: #8CD4D4;
  --ink: #0B2B3C;
  --text: #3E5A6B;
  --muted: #6B828F;
  --border: #D9E8E8;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 12px;
  --shadow-sm: 0 4px 16px rgba(11,43,60,.06);
  --shadow-md: 0 8px 30px rgba(11,43,60,.07);
  --shadow-lg: 0 14px 44px rgba(11,43,60,.13);
  --container: 1200px;
  --space: 4rem;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

img {
  max-width: 100%;
  display: block;
}

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

ul,
ol {
  list-style-position: inside;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-weight: 600;
  font-size: .95rem;
  line-height: 1.2;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease, color .2s ease;
}

.btn-primary {
  background: var(--brand-gradient);
  color: #fff;
  box-shadow: 0 8px 20px rgba(10,165,181,.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(10,165,181,.35);
}

.btn-primary:active {
  transform: scale(.98);
}

.btn-outline {
  background: #fff;
  color: var(--ink);
  border: 1.5px solid var(--brand-start);
}

.btn-outline:hover {
  background: #EAF7F7;
  border-color: var(--brand-end);
  transform: translateY(-2px);
}

.btn-outline-light {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,.65);
}

.btn-outline-light:hover {
  background: rgba(255,255,255,.12);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-light {
  background: #fff;
  color: var(--brand-end);
}

.btn-light:hover {
  background: #EAF7F7;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 9px 20px;
  font-size: .875rem;
}

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  color: var(--ink);
  padding: 0;
  font-weight: 600;
  font-size: .9rem;
}

.btn-text span {
  transition: transform .2s ease;
}

.btn-text:hover {
  color: var(--brand-start);
}

.btn-text:hover span {
  transform: translateX(4px);
}

.btn:focus-visible,
.nav-toggle:focus-visible,
.main-nav a:focus-visible,
.mobile-tab:focus-visible {
  outline: 2px solid var(--brand-start);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(10,165,181,.2);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -.01em;
  flex-shrink: 0;
}

.logo-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: var(--brand-gradient);
  border-radius: 12px;
  color: #fff;
  box-shadow: 0 6px 16px rgba(10,165,181,.3);
}

.logo-mark svg {
  width: 20px;
  height: 20px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.main-nav a {
  position: relative;
  font-weight: 600;
  font-size: .95rem;
  color: var(--ink);
  padding: 8px 2px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--brand-gradient);
  border-radius: 2px;
  transition: width .25s ease;
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.main-nav a:hover {
  color: var(--brand-start);
}

.main-nav a.active {
  color: var(--brand-start);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 42px;
  height: 42px;
  place-items: center;
  cursor: pointer;
}

.mobile-tabs {
  display: none;
}

.article-hero {
  position: relative;
  padding: 4.5rem 0 6.5rem;
  background: #0B2B3C;
  overflow: hidden;
}

.article-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .32;
}

.article-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(11,43,60,.94), rgba(11,79,108,.62) 60%, rgba(10,165,181,.25));
}

.article-hero-content {
  position: relative;
  z-index: 2;
  max-width: 920px;
}

.breadcrumb {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: .875rem;
  margin-bottom: 1.25rem;
  color: rgba(255,255,255,.75);
  background: rgba(0,0,0,.18);
  padding: 6px 14px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

.breadcrumb a {
  color: rgba(255,255,255,.9);
}

.breadcrumb a:hover {
  color: #fff;
  text-decoration: underline;
}

.breadcrumb .sep {
  opacity: .5;
}

.breadcrumb-current {
  color: rgba(255,255,255,.95);
  max-width: 300px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.article-hero h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  color: #fff;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: .75rem;
}

.article-lead {
  font-size: 1.05rem;
  color: rgba(255,255,255,.85);
  max-width: 720px;
  margin-bottom: 1.25rem;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: .875rem;
  color: rgba(255,255,255,.8);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.meta-item svg {
  width: 16px;
  height: 16px;
  opacity: .75;
}

.article-wrap {
  max-width: 900px;
  margin: -3.5rem auto 4rem;
  background: #fff;
  border-radius: 24px;
  box-shadow: var(--shadow-md);
  padding: 56px 64px;
  position: relative;
  z-index: 3;
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
}

.article-body h2 {
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  font-weight: 800;
  color: var(--ink);
  margin: 2em 0 .6em;
  line-height: 1.4;
  border-left: 4px solid var(--brand-start);
  padding-left: 14px;
}

.article-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  margin: 1.6em 0 .5em;
}

.article-body p {
  margin: 1.15em 0;
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text);
}

.article-body ul,
.article-body ol {
  margin: 1.1em 0 1.1em 1.4em;
  color: var(--text);
  line-height: 1.8;
}

.article-body li {
  margin: .35em 0;
}

.article-body ul li::marker {
  color: var(--brand-start);
}

.article-body ol li::marker {
  color: var(--brand-end);
  font-weight: 700;
}

.article-body a {
  color: var(--brand-end);
  text-decoration: underline;
  text-decoration-color: rgba(10,165,181,.4);
  text-underline-offset: 3px;
}

.article-body a:hover {
  color: var(--brand-start);
  text-decoration-color: var(--brand-start);
}

.article-body img {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--border);
  margin: 1.4em 0;
}

.article-body blockquote {
  margin: 1.6em 0;
  background: #F0FAFA;
  border-left: 4px solid var(--accent-soft);
  padding: 18px 22px;
  border-radius: 0 14px 14px 0;
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.75;
}

.article-body pre {
  background: #0B2B3C;
  color: #D0DDE4;
  padding: 18px 20px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: .9rem;
  line-height: 1.6;
  margin: 1.4em 0;
}

.article-body code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: .9em;
  background: #EFF5F4;
  padding: 2px 6px;
  border-radius: 6px;
  color: #0B4F6C;
}

.article-body pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: .95rem;
}

.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}

.article-body th {
  background: #EAF6F6;
  font-weight: 700;
  color: var(--ink);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 2.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border);
}

.post-tag {
  display: inline-block;
  background: #EAF6F6;
  border: 1px solid rgba(10,165,181,.18);
  color: var(--brand-end);
  font-size: .75rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
}

.article-back {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.related-section {
  padding: 1rem 0 4rem;
}

.section-head {
  text-align: center;
  margin-bottom: 2rem;
}

.section-badge {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--brand-end);
  background: #EAF6F6;
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  font-weight: 800;
  color: var(--ink);
}

.related-empty {
  text-align: center;
  padding: 2.5rem;
  color: var(--muted);
  background: #fff;
  border: 1px dashed var(--border);
  border-radius: 20px;
  max-width: 600px;
  margin: 0 auto;
}

.cta-section {
  padding: 1rem 0 4.5rem;
}

.cta-card {
  background: var(--brand-gradient);
  border-radius: 24px;
  padding: 48px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  color: #fff;
  box-shadow: 0 18px 50px rgba(11,79,108,.25);
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  right: -40px;
  top: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
}

.cta-card::after {
  content: '';
  position: absolute;
  left: -20px;
  bottom: -60px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255,255,255,.05);
}

.cta-copy {
  position: relative;
  z-index: 2;
}

.cta-copy h2 {
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  font-weight: 800;
  margin-bottom: .35rem;
}

.cta-copy p {
  color: rgba(255,255,255,.85);
  max-width: 520px;
}

.cta-actions {
  display: flex;
  gap: 14px;
  position: relative;
  z-index: 2;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.not-found {
  text-align: center;
  padding: 3rem 1rem;
}

.not-found-icon {
  width: 48px;
  height: 48px;
  color: var(--accent-soft);
  margin: 0 auto 1rem;
}

.not-found h2 {
  font-size: 1.5rem;
  color: var(--ink);
  margin-bottom: .5rem;
}

.not-found p {
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.site-footer {
  background: #0B2B3C;
  color: #D0DDE4;
  padding-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 2.5rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.footer-logo .logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--brand-gradient);
}

.footer-about {
  font-size: .9rem;
  line-height: 1.75;
  color: #9FB5BF;
  max-width: 280px;
}

.footer-col h4 {
  font-size: .95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 9px;
}

.footer-col a {
  color: #C6D3DA;
  font-size: .88rem;
  transition: color .2s ease;
}

.footer-col a:hover {
  color: #8CD4D4;
}

.footer-contact li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: #C6D3DA;
  font-size: .88rem;
  margin-bottom: 14px;
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 4px;
  color: #8CD4D4;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: #8FA7B2;
  font-size: .8rem;
}

.footer-bottom a {
  color: #C6D3DA;
  margin-left: 18px;
}

.footer-bottom a:hover {
  color: #8CD4D4;
}

@media (max-width: 1023px) {
  .main-nav {
    gap: 20px;
  }

  .article-wrap {
    padding: 40px 32px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 20px;
  }

  body {
    padding-bottom: 72px;
  }

  .nav-toggle {
    display: grid;
  }

  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    display: none;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    padding: 12px 20px 18px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .site-header.nav-open .main-nav {
    display: flex;
  }

  .main-nav a {
    padding: 12px 4px;
    border-bottom: 1px solid #EFF5F4;
  }

  .main-nav a:last-child {
    border-bottom: none;
  }

  .main-nav a::after {
    display: none;
  }

  .mobile-tabs {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 99;
    background: #fff;
    border-top: 1px solid var(--border);
    height: 64px;
    box-shadow: 0 -4px 16px rgba(11,43,60,.04);
  }

  .mobile-tab {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    font-size: .72rem;
    font-weight: 500;
    color: var(--muted);
    text-decoration: none;
    transition: color .2s ease;
  }

  .mobile-tab.active {
    color: var(--brand-start);
    font-weight: 600;
  }

  .mobile-tab svg {
    width: 20px;
    height: 20px;
  }

  .article-hero {
    padding: 3rem 0 5rem;
  }

  .article-hero h1 {
    font-size: clamp(1.5rem, 5vw, 2rem);
  }

  .article-lead {
    font-size: .95rem;
  }

  .article-wrap {
    margin: -2.5rem 12px 3rem;
    padding: 32px 22px;
    border-radius: 18px;
  }

  .article-body {
    font-size: .95rem;
  }

  .article-body p {
    font-size: 1rem;
  }

  .article-back {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-card {
    flex-direction: column;
    padding: 32px 24px;
    text-align: left;
  }

  .cta-actions {
    width: 100%;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-bottom a {
    margin-left: 12px;
    margin-right: 12px;
  }
}

@media (max-width: 520px) {
  .article-meta {
    gap: 10px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .breadcrumb {
    max-width: 100%;
  }

  .breadcrumb-current {
    max-width: 180px;
  }
}

/* roulang page: category2 */
:root {
  --primary-start: #0AA5B5;
  --primary-end: #0B4F6C;
  --bg-body: #F7FAF9;
  --bg-card: #FFFFFF;
  --accent: #FF7043;
  --mint: #8CD4D4;
  --mint-light: #EAF6F6;
  --ink: #0B2B3C;
  --text-sub: #3E5A6B;
  --text-weak: #6B828F;
  --border: #D9E8E8;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 12px;
  --shadow-default: 0 8px 30px rgba(11, 43, 60, .07);
  --shadow-hover: 0 14px 44px rgba(11, 43, 60, .13);
  --section-space: 5rem;
  --section-space-mobile: 3.5rem;
  --container-w: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: 100%; }
.container { max-width: var(--container-w); margin: 0 auto; padding: 0 40px; }
.section { padding: var(--section-space) 0; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-size: .95rem;
  font-weight: 700;
  line-height: 1.4;
  cursor: pointer;
  border: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 2px solid var(--primary-start);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(10, 165, 181, .2);
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary-start), var(--primary-end));
  color: #fff;
  box-shadow: 0 8px 22px rgba(11, 79, 108, .28);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(11, 79, 108, .35);
  background: linear-gradient(135deg, #0B92A3, #0A3D56);
}
.btn-primary:active { transform: scale(.98); }
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--primary-start);
  color: var(--ink);
}
.btn-outline:hover { background: #EAF7F7; border-color: var(--primary-end); color: var(--primary-end); transform: translateY(-2px); }
.btn-outline:active { transform: scale(.98); }
.btn-ghost {
  background: rgba(255, 255, 255, .16);
  border: 1px solid rgba(255, 255, 255, .55);
  color: #fff;
}
.btn-ghost:hover { background: rgba(255, 255, 255, .26); transform: translateY(-2px); }
.btn-sm { padding: 8px 18px; font-size: .875rem; }
.btn-lg { padding: 14px 36px; font-size: 1rem; }

/* ===== 顶栏 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .95);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s ease;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(11, 43, 60, .08); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-start), var(--primary-end));
  color: #fff;
  box-shadow: 0 4px 14px rgba(11, 79, 108, .25);
}
.logo-mark svg { width: 20px; height: 20px; }
.logo-text { font-size: 1.25rem; font-weight: 800; color: var(--ink); letter-spacing: -.02em; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  position: relative;
  padding: 8px 16px;
  font-size: .92rem;
  font-weight: 600;
  color: var(--text-sub);
  border-radius: 8px;
  transition: color .2s ease, background .2s ease;
}
.main-nav a:hover { color: var(--primary-start); background: rgba(10, 165, 181, .06); }
.main-nav a.active { color: var(--primary-start); font-weight: 700; }
.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary-start), var(--primary-end));
}
.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
}

/* ===== 移动底部Tab ===== */
.mobile-tabbar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 99;
  height: 64px;
  background: #fff;
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 20px rgba(11, 43, 60, .05);
  align-items: center;
  justify-content: space-around;
  padding: 0 8px;
}
.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: .72rem;
  font-weight: 600;
  color: var(--text-weak);
  transition: color .2s ease;
  min-width: 56px;
}
.tab-item svg { width: 21px; height: 21px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.tab-item.active {
  background: linear-gradient(135deg, var(--primary-start), var(--primary-end));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  color: var(--primary-start);
}

/* ===== Hero ===== */
.cat-hero {
  position: relative;
  background-color: var(--primary-end);
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
  padding: 88px 0 80px;
}
.cat-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(7, 42, 60, .92) 0%, rgba(11, 79, 108, .78) 55%, rgba(10, 165, 181, .55) 100%);
}
.cat-hero::after {
  content: "";
  position: absolute;
  width: 420px; height: 420px;
  border-radius: 50%;
  border: 60px solid rgba(140, 212, 212, .14);
  right: -100px; bottom: -140px;
  pointer-events: none;
}
.cat-hero-inner { position: relative; z-index: 2; max-width: 860px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .32);
  color: #E8FBFC;
  font-size: .82rem;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
  margin-bottom: 22px;
}
.hero-badge svg { width: 15px; height: 15px; }
.cat-hero h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: -.01em;
}
.cat-hero h1 .grad-text {
  background: linear-gradient(90deg, #A5E8E8, #E3F6F6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: 1.06rem;
  line-height: 1.8;
  color: rgba(235, 249, 249, .92);
  max-width: 640px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 38px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 24px; }
.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(232, 248, 248, .9);
  font-size: .875rem;
  font-weight: 500;
}
.hero-trust svg { width: 17px; height: 17px; stroke: #8CD4D4; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ===== 板块标题 ===== */
.section-head { margin-bottom: 42px; }
.section-head.center { text-align: center; max-width: 720px; margin-left: auto; margin-right: auto; }
.section-badge {
  display: inline-flex;
  align-items: center;
  background: var(--mint-light);
  color: var(--primary-end);
  font-size: .78rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid rgba(10, 165, 181, .18);
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  font-weight: 800;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 10px;
}
.section-head p { color: var(--text-sub); font-size: .98rem; }

/* ===== 卡片网格 + 侧栏 ===== */
.capability-section { background: var(--bg-body); }
.layout-with-sidebar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 32px;
  align-items: start;
}
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-default);
  border: 1px solid rgba(217, 232, 232, .6);
  overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--mint);
}
.card-cover { position: relative; overflow: hidden; aspect-ratio: 4 / 2.6; background: var(--mint-light); }
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.feature-card:hover .card-cover img { transform: scale(1.04); }
.card-tag {
  position: absolute;
  left: 14px; top: 14px;
  background: rgba(11, 43, 60, .76);
  color: #EAF7F7;
  font-size: .72rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.card-body { padding: 22px 22px 18px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 8px; color: var(--ink); }
.card-body p { font-size: .9rem; line-height: 1.7; color: var(--text-sub); flex: 1; }
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  margin-top: 16px;
  padding-top: 12px;
  font-size: .78rem;
  color: var(--text-weak);
}
.card-meta time { font-weight: 600; color: var(--primary-end); }

/* ===== 侧栏 ===== */
.sidebar { display: flex; flex-direction: column; gap: 24px; position: sticky; top: 96px; }
.sidebar-card {
  background: var(--mint-light);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  border: 1px solid rgba(10, 165, 181, .12);
}
.sidebar-card h3 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-card h3 svg { width: 18px; height: 18px; stroke: var(--primary-start); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.sidebar-list li + li { border-top: 1px solid rgba(10, 165, 181, .12); }
.sidebar-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 4px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--text-sub);
  transition: color .2s ease, padding-left .2s ease;
}
.sidebar-list a::after { content: "→"; color: var(--mint); transition: transform .2s ease, color .2s ease; }
.sidebar-list a:hover { color: var(--primary-start); padding-left: 8px; }
.sidebar-list a:hover::after { transform: translateX(4px); color: var(--primary-start); }
.sidebar-faq details {
  background: #fff;
  border-radius: 12px;
  padding: 13px 15px;
  margin-bottom: 10px;
  border: 1px solid rgba(10, 165, 181, .1);
}
.sidebar-faq details:last-child { margin-bottom: 0; }
.sidebar-faq summary {
  font-size: .85rem;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  transition: color .2s;
}
.sidebar-faq summary::-webkit-details-marker { display: none; }
.sidebar-faq summary::after { content: "+"; font-size: 1.1rem; color: var(--primary-start); flex-shrink: 0; }
.sidebar-faq details[open] summary::after { content: "−"; }
.sidebar-faq p { font-size: .8rem; color: var(--text-sub); margin-top: 8px; line-height: 1.65; }

/* ===== 数据指标 ===== */
.metrics-section {
  background: linear-gradient(135deg, var(--primary-end), #0A3D56);
  position: relative;
  overflow: hidden;
}
.metrics-section::before {
  content: "";
  position: absolute;
  width: 300px; height: 300px;
  border-radius: 50%;
  border: 48px solid rgba(140, 212, 212, .1);
  top: -120px; left: -80px;
}
.metrics-section .section-head h2 { color: #fff; }
.metrics-section .section-head p { color: rgba(230, 245, 245, .85); }
.metrics-section .section-badge { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .2); color: #DCF5F5; }
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; z-index: 2; }
.metric-card {
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(6px);
  padding: 32px 24px;
  text-align: center;
  transition: background .25s ease, transform .25s ease;
}
.metric-card:hover { background: rgba(255, 255, 255, .13); transform: translateY(-4px); }
.metric-num {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 6px;
}
.metric-num .accent { color: var(--mint); }
.metric-label { font-size: .92rem; font-weight: 700; color: #DCF5F5; margin-bottom: 6px; }
.metric-card p { font-size: .8rem; color: rgba(225, 242, 242, .75); line-height: 1.6; }

/* ===== 防护流程 ===== */
.flow-section { background: var(--bg-body); }
.flow-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.flow-item {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 32px 28px;
  box-shadow: var(--shadow-default);
  transition: transform .25s ease, box-shadow .25s ease;
  position: relative;
  overflow: hidden;
}
.flow-item::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--primary-start), var(--primary-end));
}
.flow-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.flow-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary-start), var(--primary-end));
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  margin-bottom: 18px;
  box-shadow: 0 6px 18px rgba(11, 79, 108, .22);
}
.flow-icon svg { width: 24px; height: 24px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.flow-item h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.flow-item p { font-size: .9rem; color: var(--text-sub); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-body); }
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--bg-card);
  border-radius: 16px;
  border: 1px solid var(--border);
  padding: 20px 26px;
  box-shadow: var(--shadow-default);
  transition: background .2s ease, border-color .2s ease, box-shadow .2s ease;
  position: relative;
  overflow: hidden;
}
.faq-item::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--primary-start), var(--primary-end));
  opacity: .7;
}
.faq-item[open] { background: #F0FAFA; border-color: var(--mint); box-shadow: var(--shadow-hover); }
.faq-item summary {
  font-size: .98rem;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  transition: color .2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--mint-light);
  color: var(--primary-end);
  font-size: 1.15rem;
  font-weight: 700;
  transition: transform .25s ease, background .25s ease;
}
.faq-item[open] summary::after { content: "−"; background: var(--primary-start); color: #fff; }
.faq-item p { margin-top: 12px; font-size: .92rem; line-height: 1.75; color: var(--text-sub); padding-right: 20px; }

/* ===== CTA ===== */
.cta-section {
  position: relative;
  background: linear-gradient(120deg, var(--primary-end), var(--primary-start));
  overflow: hidden;
  padding: 76px 0;
}
.cta-section::before {
  content: "";
  position: absolute;
  width: 340px; height: 340px;
  border-radius: 50%;
  border: 55px solid rgba(255, 255, 255, .08);
  right: -60px; top: -120px;
}
.cta-section::after {
  content: "";
  position: absolute;
  width: 220px; height: 220px;
  border-radius: 50%;
  border: 34px solid rgba(140, 212, 212, .15);
  left: 8%; bottom: -80px;
}
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 760px; margin: 0 auto; }
.cta-inner h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); font-weight: 800; color: #fff; margin-bottom: 14px; }
.cta-inner p { font-size: 1rem; color: rgba(230, 246, 246, .9); margin-bottom: 30px; }

/* ===== 页脚 ===== */
.site-footer { background: var(--ink); color: #D0DDE4; padding: 60px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 40px; margin-bottom: 40px; }
.footer-logo { display: inline-flex; align-items: center; gap: 10px; font-size: 1.15rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
.footer-logo .logo-mark { box-shadow: none; }
.footer-about { font-size: .88rem; line-height: 1.75; color: #B4C9D2; max-width: 300px; }
.footer-col h4 { font-size: .92rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: .87rem; color: #B4C9D2; transition: color .2s ease; }
.footer-col ul li a:hover { color: var(--mint); }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: .85rem; color: #B4C9D2; line-height: 1.6; }
.footer-contact svg { width: 17px; height: 17px; flex-shrink: 0; margin-top: 3px; color: var(--mint); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding-top: 22px;
  font-size: .8rem;
  color: #93ADB8;
}
.footer-bottom .footer-links { display: flex; gap: 22px; }
.footer-bottom .footer-links a { color: #93ADB8; transition: color .2s; }
.footer-bottom .footer-links a:hover { color: var(--mint); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .container { padding: 0 32px; }
  .layout-with-sidebar { grid-template-columns: 1fr; }
  .sidebar { position: static; flex-direction: row; }
  .sidebar-card { flex: 1; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
}

@media (max-width: 768px) {
  .section { padding: var(--section-space-mobile) 0; }
  .container { padding: 0 20px; }
  .header-inner { height: 64px; }
  .main-nav {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 14px 30px rgba(11, 43, 60, .1);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 18px;
    gap: 4px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 10px; border-radius: 10px; font-size: .95rem; }
  .main-nav a.active { background: var(--mint-light); }
  .main-nav a.active::after { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-actions .btn { display: none; }
  .cat-hero { padding: 66px 0 56px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn { width: 100%; }
  .hero-trust { gap: 16px; flex-direction: column; }
  .layout-with-sidebar { gap: 24px; }
  .sidebar { flex-direction: column; }
  .metrics-grid { gap: 16px; }
  .flow-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .mobile-tabbar { display: flex; }
  body { padding-bottom: 64px; }
}

@media (max-width: 520px) {
  .card-grid { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cat-hero h1 { font-size: 1.75rem; }
  .hero-sub { font-size: .95rem; }
  .faq-item { padding: 16px 18px; }
  .faq-item summary { font-size: .92rem; }
}

@media (min-width: 769px) {
  .mobile-tabbar { display: none !important; }
}

/* roulang page: category3 */
:root {
  --brand-start:#0AA5B5;
  --brand-end:#0B4F6C;
  --brand-gradient:linear-gradient(135deg,#0AA5B5 0%,#0B4F6C 100%);
  --bg:#F7FAF9;
  --card-bg:#FFFFFF;
  --accent:#FF7043;
  --aqua:#8CD4D4;
  --ink:#0B2B3C;
  --ink-2:#3E5A6B;
  --ink-3:#6B828F;
  --border:#D9E8E8;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow:0 8px 30px rgba(11,43,60,.07);
  --shadow-hover:0 14px 44px rgba(11,43,60,.13);
  --container:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:var(--ink);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--brand-start)}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button,input,textarea,select{font:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 40px}
.section{padding:4.5rem 0}
.section-head{max-width:720px;margin-bottom:2.5rem}
.section-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(10,165,181,.1);color:var(--brand-end);font-size:.8rem;font-weight:600;padding:6px 16px;border-radius:999px;letter-spacing:.5px}
.section-badge::before{content:'';width:8px;height:8px;border-radius:50%;background:var(--brand-start)}
.section-title{font-size:clamp(1.4rem,2.2vw,1.9rem);font-weight:800;line-height:1.3;margin:.6rem 0 .6rem;color:var(--ink)}
.section-desc{color:var(--ink-2);font-size:1rem}
h1,h2,h3,h4{line-height:1.3}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:12px;font-weight:600;font-size:1rem;cursor:pointer;border:2px solid transparent;transition:all .28s ease;letter-spacing:.3px}
.btn-primary{background:var(--brand-gradient);color:#fff;box-shadow:0 8px 24px rgba(10,165,181,.25)}
.btn-primary:hover{filter:saturate(1.1) brightness(1.05);transform:translateY(-2px);box-shadow:0 14px 34px rgba(11,79,108,.32)}
.btn-primary:active{transform:scale(.98);box-shadow:none}
.btn-outline{background:#fff;border-color:var(--brand-start);color:var(--ink)}
.btn-outline:hover{background:#EAF7F7;border-color:var(--brand-end);color:var(--brand-end);transform:translateY(-2px)}
.btn-outline:active{transform:scale(.98)}
.btn-dark{background:var(--ink);color:#fff}
.btn-sm{padding:9px 20px;font-size:.9rem}
.btn:focus-visible{outline:2px solid var(--brand-start);outline-offset:2px;box-shadow:0 0 0 4px rgba(10,165,181,.2)}
.tag{display:inline-block;background:var(--aqua);color:var(--ink);font-size:.75rem;font-weight:600;padding:4px 12px;border-radius:999px;line-height:1.4;letter-spacing:.3px}
.badge-num{font-weight:800;color:var(--brand-end)}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);transition:box-shadow .3s ease}
.site-header.scrolled{box-shadow:0 6px 24px rgba(11,43,60,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:30px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:38px;height:38px;border-radius:10px;background:var(--brand-gradient);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 6px 18px rgba(10,165,181,.3)}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:1.35rem;font-weight:800;color:var(--ink);letter-spacing:.5px}
.main-nav{display:flex;align-items:center;gap:34px}
.main-nav a{font-weight:500;color:var(--ink-2);padding:6px 2px;position:relative;font-size:.95rem}
.main-nav a::after{content:'';position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand-gradient);border-radius:2px;transition:width .28s ease}
.main-nav a:hover::after,.main-nav a.active::after{width:100%}
.main-nav a:hover,.main-nav a.active{color:var(--brand-start)}
.header-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;border-radius:8px;transition:background .2s}
.nav-toggle:hover{background:#EAF7F7}
.nav-toggle:focus-visible{outline:2px solid var(--brand-start);outline-offset:2px}

/* Mobile tabbar */
.mobile-tabbar{display:none;position:fixed;bottom:0;left:0;right:0;z-index:200;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-top:1px solid var(--border);height:64px;padding:0;justify-content:space-around;align-items:center;box-shadow:0 -4px 20px rgba(11,43,60,.06)}
.tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;flex:1;height:100%;color:var(--ink-3);font-size:.72rem;transition:color .2s}
.tab-item svg{width:22px;height:22px}
.tab-item.active,.tab-item:hover{color:var(--brand-start)}
.tab-item.active svg{color:var(--brand-start)}

/* Page Hero */
.page-hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#0B4F6C 0%,#0AA5B5 100%);padding:5rem 0 4.2rem;color:#fff}
.page-hero .hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.25}
.page-hero .hero-overlay{position:absolute;inset:0;background:linear-gradient(120deg,rgba(11,43,60,.82) 30%,rgba(10,165,181,.35) 100%);z-index:1}
.hero-inner{position:relative;z-index:2;max-width:820px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);padding:7px 18px;border-radius:999px;font-size:.82rem;font-weight:500;letter-spacing:.6px;color:#EAF7F7}
.hero-badge::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--aqua)}
.hero-title{font-size:clamp(2rem,4vw,3.4rem);font-weight:800;margin:1.2rem 0 1rem;line-height:1.2}
.hero-subtitle{font-size:1.12rem;line-height:1.75;color:rgba(240,250,250,.92);max-width:660px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:2rem}
.page-hero .btn-primary{background:#fff;color:var(--brand-end)}
.page-hero .btn-primary:hover{background:#EAF7F7;color:var(--brand-end)}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;margin-top:2.6rem;padding-top:1.8rem;border-top:1px solid rgba(255,255,255,.2)}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:.88rem;color:#EAF7F7}
.hero-trust svg{width:17px;height:17px;color:var(--aqua)}

/* Breadcrumb */
.breadcrumb-wrap{background:var(--bg);padding:18px 0;border-bottom:1px solid var(--border)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.87rem;color:var(--ink-3)}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--brand-start)}
.breadcrumb .sep{color:#B8CCD0}
.breadcrumb .current{color:var(--ink)}

/* Flow section */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:1rem}
.flow-item{position:relative;background:var(--card-bg);border-radius:var(--radius-lg);padding:2rem 1.4rem 1.6rem;box-shadow:var(--shadow);transition:all .3s ease;border:1px solid transparent}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--aqua)}
.flow-num{font-size:2.3rem;font-weight:800;background:var(--brand-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;line-height:1;opacity:.85}
.flow-item h3{font-size:1.05rem;font-weight:700;margin:.9rem 0 .5rem}
.flow-item p{font-size:.88rem;color:var(--ink-2);line-height:1.6}
.flow-item::after{content:'';position:absolute;top:36px;right:-14px;width:14px;height:2px;background:var(--aqua)}
.flow-item:last-child::after{display:none}

/* Split layout */
.split-layout{display:grid;grid-template-columns:1.6fr 1fr;gap:2.5rem;align-items:start}
.media-list{display:flex;flex-direction:column;gap:1.4rem}
.media-item{display:flex;gap:1.4rem;background:var(--card-bg);border-radius:var(--radius-md);padding:1.4rem;box-shadow:var(--shadow);border:1px solid transparent;transition:all .3s ease;align-items:center}
.media-item:hover{box-shadow:var(--shadow-hover);border-color:var(--aqua);transform:translateY(-2px)}
.media-thumb{width:132px;height:96px;border-radius:12px;object-fit:cover;flex-shrink:0;background:#EAF7F7}
.media-content{flex:1}
.media-title{font-size:1.02rem;font-weight:700;margin-bottom:.35rem;color:var(--ink)}
.media-title:hover{color:var(--brand-start)}
.media-desc{font-size:.86rem;color:var(--ink-2);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.media-meta{font-size:.78rem;color:var(--ink-3);margin-top:.45rem;display:flex;align-items:center;gap:10px}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:1rem}
.faq-item{background:var(--card-bg);border-radius:16px;padding:1.2rem 1.3rem;position:relative;box-shadow:var(--shadow);overflow:hidden;transition:background .3s ease;cursor:pointer}
.faq-item::before{content:'';position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--brand-gradient)}
.faq-item.active{background:#F0FAFA}
.faq-question{font-weight:600;font-size:.95rem;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-question .icon{flex-shrink:0;width:22px;height:22px;border-radius:50%;background:rgba(10,165,181,.12);display:flex;align-items:center;justify-content:center;font-size:.8rem;color:var(--brand-end);transition:transform .3s ease}
.faq-item.active .faq-question .icon{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;color:var(--ink-2);font-size:.88rem;line-height:1.7;transition:max-height .35s ease;padding-top:0}
.faq-item.active .faq-answer{max-height:300px;padding-top:.8rem}
.faq-side-card{background:#EAF6F6;border-radius:var(--radius-lg);padding:1.5rem;margin-top:1.4rem}
.faq-side-card h4{font-size:.95rem;margin-bottom:.7rem;color:var(--ink)}
.faq-side-card p{font-size:.85rem;color:var(--ink-2);line-height:1.65}
.faq-side-card a.btn{margin-top:1rem}

/* Stats band */
.stats-band{background:var(--ink);position:relative;overflow:hidden;padding:5rem 0}
.stats-band::before{content:'';position:absolute;width:320px;height:320px;border-radius:50%;background:rgba(10,165,181,.14);top:-120px;right:-80px}
.stats-band::after{content:'';position:absolute;width:180px;height:180px;border-radius:50%;background:rgba(140,212,212,.1);bottom:-60px;left:10%}
.stats-band .container{position:relative;z-index:2}
.stats-band .section-title{color:#fff}
.stats-band .section-desc{color:rgba(208,221,228,.75)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-top:2.4rem}
.stat-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);padding:2rem 1.4rem;text-align:center;transition:all .3s ease;backdrop-filter:blur(4px)}
.stat-card:hover{background:rgba(255,255,255,.1);transform:translateY(-3px)}
.stat-num{font-size:clamp(1.8rem,4vw,2.7rem);font-weight:800;background:linear-gradient(135deg,#8CD4D4,#fff);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{color:rgba(208,221,228,.82);font-size:.85rem;margin-top:.5rem}
.stat-sub{color:rgba(208,221,228,.5);font-size:.75rem;margin-top:.25rem}

/* CTA band */
.cta-band{position:relative;background:linear-gradient(120deg,#0AA5B5,#0B4F6C);border-radius:28px;padding:3.6rem 3rem;color:#fff;text-align:center;overflow:hidden}
.cta-band::before{content:'';position:absolute;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.08);top:-80px;left:-60px}
.cta-band::after{content:'';position:absolute;width:120px;height:120px;border-radius:50%;background:rgba(140,212,212,.14);bottom:-40px;right:10%}
.cta-band .cta-content{position:relative;z-index:2;max-width:680px;margin:0 auto}
.cta-band h2{font-size:clamp(1.5rem,2.6vw,2.2rem);font-weight:800;margin-bottom:.8rem}
.cta-band p{color:rgba(240,250,250,.9);font-size:1rem;margin-bottom:1.8rem;line-height:1.7}
.cta-band .btn{background:#fff;color:var(--brand-end)}
.cta-band .btn:hover{background:#EAF7F7;transform:translateY(-2px)}

/* News section */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.news-card{background:var(--card-bg);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:all .3s ease;border:1px solid transparent}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--aqua)}
.news-card img{width:100%;height:180px;object-fit:cover}
.news-card-body{padding:1.4rem}
.news-card-body .tag{margin-bottom:.6rem}
.news-card-title{font-size:1rem;font-weight:700;line-height:1.45;margin:.5rem 0 .45rem}
.news-card-title a:hover{color:var(--brand-start)}
.news-card-desc{font-size:.84rem;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card-meta{font-size:.76rem;color:var(--ink-3);margin-top:.6rem}
.empty-state{grid-column:1/-1;text-align:center;padding:3rem 1rem;background:var(--card-bg);border-radius:var(--radius-lg)}
.empty-state svg{width:42px;height:42px;color:var(--aqua);margin-bottom:.8rem}
.empty-state p{color:var(--ink-3);font-size:.95rem}

/* Contact */
.contact-wrap{background:#EAF6F6;border-radius:28px;padding:2.8rem;display:grid;grid-template-columns:1fr 1.2fr;gap:2.8rem;overflow:hidden}
.contact-info h3{font-size:1.3rem;font-weight:800;margin-bottom:1.2rem}
.contact-list li{display:flex;align-items:flex-start;gap:12px;margin-bottom:1rem;font-size:.92rem;color:var(--ink-2)}
.contact-list svg{width:19px;height:19px;color:var(--brand-start);flex-shrink:0;margin-top:3px}
.contact-form .form-group{margin-bottom:1.1rem}
.contact-form label{display:block;font-size:.85rem;font-weight:600;color:var(--ink);margin-bottom:.35rem}
.contact-form input,.contact-form textarea,.contact-form select{width:100%;height:48px;border:1px solid var(--border);border-radius:12px;padding:0 16px;font-size:.9rem;background:#fff;color:var(--ink);transition:all .25s ease;box-sizing:border-box}
.contact-form textarea{height:110px;padding:14px 16px;resize:vertical}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:#9BB0BA}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--brand-start);outline:none;box-shadow:0 0 0 4px rgba(10,165,181,.15)}

/* Footer */
.site-footer{background:var(--ink);color:#D0DDE4;padding:3.6rem 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:2.5rem;padding-bottom:2.5rem}
.footer-logo{display:inline-flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:800;color:#fff;margin-bottom:1rem}
.footer-logo .logo-mark{background:rgba(255,255,255,.14);box-shadow:none}
.footer-about{font-size:.85rem;line-height:1.7;color:#9BB0BA;max-width:300px}
.footer-col h4{color:#fff;font-size:.95rem;font-weight:700;margin-bottom:1rem}
.footer-col ul li{margin-bottom:.55rem}
.footer-col ul li a{color:#9BB0BA;font-size:.85rem;transition:color .25s}
.footer-col ul li a:hover{color:var(--aqua)}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;color:#9BB0BA;font-size:.85rem;margin-bottom:.8rem}
.footer-contact svg{width:17px;height:17px;flex-shrink:0;margin-top:2px;color:var(--aqua)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;border-top:1px solid rgba(255,255,255,.1);padding:1.4rem 0;font-size:.8rem;color:#7B94A0}
.footer-links{display:flex;gap:20px}
.footer-links a{color:#9BB0BA;font-size:.8rem}
.footer-links a:hover{color:var(--aqua)}

/* Scrollbar */
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-thumb{background:#B8CCD0;border-radius:99px}
::-webkit-scrollbar-thumb:hover{background:#8CD4D4}

/* Responsive */
@media (max-width:1023px){
  .container{padding:0 28px}
  .main-nav{gap:20px}
  .main-nav a{font-size:.88rem}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .flow-item::after{display:none}
  .split-layout{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .contact-wrap{grid-template-columns:1fr;padding:2rem}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:3rem 0}
  .site-header{border-bottom:none}
  .header-inner{height:64px}
  .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:0 20px;border-bottom:1px solid var(--border);box-shadow:0 16px 30px rgba(11,43,60,.08)}
  .main-nav.open{display:flex}
  .main-nav a{padding:14px 0;border-bottom:1px solid #EFF4F4;font-size:1rem}
  .main-nav a::after{display:none}
  .nav-toggle{display:block}
  .header-actions .btn-sm{display:none}
  .mobile-tabbar{display:flex}
  body{padding-bottom:64px}
  .page-hero{padding:3.2rem 0}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-trust{flex-direction:column;gap:12px}
  .flow-grid{grid-template-columns:1fr}
  .media-item{flex-direction:column;align-items:flex-start;padding:1.2rem}
  .media-thumb{width:100%;height:170px}
  .stats-grid{gap:16px}
  .stat-card{padding:1.4rem 1rem}
  .news-grid{grid-template-columns:1fr}
  .cta-band{padding:2.6rem 1.6rem}
  .contact-wrap{padding:1.6rem}
  .footer-grid{grid-template-columns:1fr;gap:1.8rem}
  .footer-bottom{flex-direction:column;gap:10px;text-align:center}
  .faq-answer{font-size:.85rem}
}
@media (max-width:420px){
  .stats-grid{grid-template-columns:1fr 1fr}
  .section-title{font-size:1.25rem}
}