/* roulang page: index */
/* ================= 设计变量 ================= */
:root{
  --brand:#17786B;
  --brand-dark:#0F5A51;
  --brand-soft:#E8F4F1;
  --accent:#FF7A2F;
  --accent-dark:#E9651C;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --deep-1:#0E2B27;
  --deep-2:#14453D;
  --text:#17211F;
  --text-2:#5A6A66;
  --text-3:#98A5A1;
  --line:#E2E8E5;
  --ok:#2E9E6B;
  --warn:#E0A22A;
  --err:#D0483C;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --sh-1:0 1px 2px rgba(14,43,39,.06);
  --sh-2:0 10px 24px -12px rgba(14,43,39,.18);
  --sh-3:0 18px 40px -20px rgba(14,43,39,.30);
  --container:1240px;
  --nav-h:64px;
}

/* ================= reset / 基础排版 ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Inter",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out}
a:hover{color:var(--brand-dark)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-soft);color:var(--brand-dark)}

/* ================= 容器与栅格补充 ================= */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
.sec{padding:96px 0}
.sec-tight{padding:72px 0}
.sec-alt{background:#fff}

/* ================= 导航 ================= */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease-out;
}
.site-header.is-stuck{box-shadow:var(--sh-2)}
.nav-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:var(--nav-h);
  position:relative;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:17px;
  color:var(--text);
  flex-shrink:0;
}
.brand:hover{color:var(--brand-dark)}
.brand-mark{
  width:32px;height:32px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--brand),#2AA192);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;
  flex-shrink:0;
}
.brand-text{white-space:nowrap}
.nav-menu{display:flex;align-items:center;flex:1;gap:8px}
.nav-links{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav-link{
  display:inline-block;
  padding:8px 14px;
  border-radius:999px;
  color:var(--text-2);
  font-size:15px;
  white-space:nowrap;
  transition:background-color .18s ease-out,color .18s ease-out;
}
.nav-link:hover{background:rgba(23,120,107,.12);color:var(--brand-dark)}
.nav-link.active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px;height:38px;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .18s ease-out,color .18s ease-out,background-color .18s ease-out;
}
.icon-btn:hover{border-color:rgba(23,120,107,.4);color:var(--brand);background:var(--brand-soft)}
.nav-toggle{
  margin-left:auto;
  width:42px;height:42px;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  display:none;
  align-items:center;justify-content:center;
  color:var(--text);
}
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 24px;
  border:0;
  border-radius:10px;
  background:var(--accent);
  color:#fff;
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  box-shadow:var(--sh-1);
  transition:background-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-main:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-main:active{transform:translateY(0)}
.btn-line{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border:1.5px solid var(--brand);
  border-radius:10px;
  background:transparent;
  color:var(--brand-dark);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:background-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.btn-line:hover{background:rgba(23,120,107,.08);color:var(--brand-dark);transform:translateY(-1px)}
.btn-sm-nav{min-height:40px;padding:0 18px;font-size:14px}

/* ================= Hero ================= */
.hero{
  padding:56px 0 88px;
  background:
    radial-gradient(900px 380px at 88% -12%, rgba(23,120,107,.12), transparent 68%),
    linear-gradient(180deg,#FFFFFF 0%, var(--bg) 100%);
  overflow:hidden;
}
.hero-grid{--bs-gutter-x:1.5rem}
.hero-title{
  font-size:clamp(30px,4.2vw,46px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:0;
  margin:0 0 18px;
}
.hero-title .hl{color:var(--brand-dark)}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  line-height:1.75;
  margin:0 0 30px;
  max-width:560px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:10px}
.metric{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--line);
  font-size:13px;
  color:var(--text-2);
  box-shadow:var(--sh-1);
}
.metric i{color:var(--brand);font-size:12px}
.hero-visual{position:relative;padding-bottom:36px}
.hero-back{
  position:absolute;
  left:-26px;
  bottom:0;
  width:72%;
  height:64%;
  border-radius:var(--r-lg);
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  opacity:.92;
}
.hero-img{
  position:relative;
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:16px;
  box-shadow:var(--sh-2);
}
.hero-float{
  position:absolute;
  right:-6px;
  bottom:6px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-2);
  padding:14px 16px;
  max-width:232px;
}
.hero-float .float-step{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  color:var(--accent-dark);
  background:rgba(255,122,47,.12);
  border-radius:999px;
  padding:2px 10px;
  margin-bottom:8px;
}
.hero-float strong{display:block;font-size:15px;margin-bottom:4px}
.hero-float span{display:block;font-size:12.5px;color:var(--text-2);line-height:1.6}

/* ================= 通用区块标题 ================= */
.sec-head{margin-bottom:44px;max-width:780px}
.sec-title{
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1.3;
  padding-left:16px;
  border-left:4px solid var(--brand);
  margin:0 0 12px;
}
.sec-desc{
  padding-left:16px;
  color:var(--text-2);
  font-size:16px;
  margin:0;
}
.sec-head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:44px;
}
.sec-head-row .sec-head{margin-bottom:0}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--brand);
}
.text-link:hover{color:var(--brand-dark);gap:10px}
.text-link i{font-size:12px;transition:transform .18s ease-out}
.text-link:hover i{transform:translateX(2px)}

/* ================= 三步上手 ================= */
.steps-wrap{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:8px 0 0;
  box-shadow:var(--sh-1);
}
.steps{display:grid;grid-template-columns:repeat(3,1fr)}
.step{position:relative;padding:36px 30px 34px}
.step + .step{border-left:1px dashed var(--line)}
.step-num{
  font-size:58px;
  font-weight:700;
  line-height:1;
  color:rgba(23,120,107,.09);
  margin-bottom:10px;
  letter-spacing:-2px;
}
.step-title{font-size:18px;font-weight:600;margin:0 0 10px}
.step-text{font-size:15px;color:var(--text-2);margin:0}
.step-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:16px;
  font-size:13px;
  color:var(--brand-dark);
  background:var(--brand-soft);
  border-radius:999px;
  padding:5px 12px;
}
.steps-bar{
  margin:0 30px;
  height:3px;
  border-radius:3px;
  background:linear-gradient(90deg,var(--brand) 0%,rgba(23,120,107,.28) 62%,#EEF3F1 100%);
  position:relative;
}
.steps-bar::before,
.steps-bar::after{
  content:"";
  position:absolute;
  top:50%;
  width:9px;height:9px;
  border-radius:50%;
  background:#fff;
  border:2px solid var(--brand);
  transform:translateY(-50%);
}
.steps-bar::before{left:-4px}
.steps-bar::after{left:calc(100% - 5px);right:auto;border-color:#D9E4E1}
.steps-foot{
  padding:18px 30px 26px;
  font-size:13.5px;
  color:var(--text-3);
}

/* ================= 频道 Tabs ================= */
.channel-tabs{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:32px;
  border:0;
}
.channel-tab{
  border:1px solid var(--line);
  background:#fff;
  color:var(--text-2);
  border-radius:999px;
  padding:10px 20px;
  font-size:15px;
  transition:all .18s ease-out;
}
.channel-tab:hover{border-color:rgba(23,120,107,.4);color:var(--brand-dark)}
.channel-tab.active{
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
  font-weight:600;
  box-shadow:var(--sh-2);
}
.channel-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--sh-1);
}
.channel-panel h3{font-size:21px;font-weight:600;margin:0 0 12px}
.channel-panel p{color:var(--text-2);margin:0 0 18px}
.channel-figure{
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
}
.channel-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.check-list{margin:0 0 20px;display:grid;gap:10px}
.check-list li{
  position:relative;
  padding-left:26px;
  font-size:15px;
  color:var(--text-2);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:4px;top:11px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--brand);
}

/* ================= 案例证明 ================= */
.case-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  align-items:center;
  padding:32px 0;
  border-bottom:1px solid var(--line);
}
.case-row:last-child{border-bottom:0}
.case-media{border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1)}
.case-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease-out}
.case-row:hover .case-media img{transform:scale(1.02)}
.case-body .tag{
  display:inline-block;
  font-size:12.5px;
  font-weight:600;
  color:var(--brand-dark);
  background:var(--brand-soft);
  border-radius:999px;
  padding:5px 12px;
  margin-bottom:14px;
}
.case-body h3{font-size:20px;font-weight:600;line-height:1.45;margin:0 0 12px}
.case-body p{color:var(--text-2);font-size:15px;margin:0 0 16px}
.case-note{
  border-left:3px solid var(--brand);
  background:var(--brand-soft);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  padding:12px 16px;
  font-size:14px;
  color:var(--brand-dark);
  margin-bottom:16px;
}

/* ================= 资讯卡片列表 ================= */
.card-base{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  padding:24px;
  height:100%;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.card-base:hover{border-color:rgba(23,120,107,.32);box-shadow:var(--sh-2);transform:translateY(-2px)}
.news-card{display:flex;flex-direction:column}
.news-link{display:flex;flex-direction:column;height:100%;color:inherit}
.news-link:hover{color:inherit}
.news-card .tag{
  align-self:flex-start;
  font-size:12.5px;
  font-weight:600;
  color:var(--brand-dark);
  background:var(--brand-soft);
  border-radius:999px;
  padding:4px 12px;
  margin-bottom:14px;
}
.news-card .card-title{
  font-size:17.5px;
  font-weight:600;
  line-height:1.5;
  margin:0 0 10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card .card-text{
  font-size:14.5px;
  color:var(--text-2);
  margin:0 0 18px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.card-foot .more{color:var(--brand);font-weight:600}
.empty-state{
  background:#fff;
  border:1px dashed var(--line);
  border-radius:var(--r-lg);
  padding:52px 24px;
  text-align:center;
  color:var(--text-2);
}
.empty-state i{font-size:28px;color:var(--text-3);display:block;margin-bottom:12px}
.empty-state p{margin:0 0 16px}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:0 20px;
  border:1.5px solid var(--brand);
  border-radius:10px;
  color:var(--brand-dark);
  font-size:14px;
  font-weight:600;
}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark)}

/* ================= FAQ ================= */
.faq-side h2{
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1.3;
  padding-left:16px;
  border-left:4px solid var(--brand);
  margin:0 0 14px;
}
.faq-side p{color:var(--text-2);padding-left:16px;margin:0 0 22px}
.faq-side .side-card{
  margin-left:16px;
  background:var(--brand-soft);
  border-radius:var(--r-md);
  padding:20px;
  font-size:14.5px;
  color:var(--brand-dark);
}
.faq-side .side-card strong{display:block;font-size:16px;margin-bottom:6px}
.faq-accordion .accordion-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-accordion .accordion-item:hover{border-color:rgba(23,120,107,.3)}
.faq-accordion .accordion-button{
  background:#fff;
  color:var(--text);
  font-size:16.5px;
  font-weight:600;
  padding:20px 22px;
  box-shadow:none;
  border:0;
  line-height:1.5;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--brand-dark);
  background:#fff;
  box-shadow:none;
}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px}
.faq-accordion .accordion-button::after{
  content:"";
  width:9px;height:9px;
  border-right:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  background-image:none !important;
  transform:rotate(45deg);
  transition:transform .2s ease-out;
  margin-left:auto;
  flex-shrink:0;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(-135deg)}
.faq-accordion .accordion-body{
  padding:0 22px 22px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
}

/* ================= CTA 带 ================= */
.cta-band{
  background:linear-gradient(135deg,var(--deep-1) 0%,var(--deep-2) 100%);
  color:#fff;
  padding:88px 0;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  top:-140px;right:-80px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(23,120,107,.42), transparent 66%);
}
.cta-band::after{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:rgba(255,255,255,.12);
}
.cta-inner{position:relative;z-index:1}
.cta-band h2{
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1.3;
  margin:0 0 14px;
  color:#fff;
}
.cta-band .cta-lead{color:rgba(255,255,255,.76);font-size:16px;margin:0 0 24px;max-width:520px}
.cta-points{display:grid;gap:10px}
.cta-points li{
  position:relative;
  padding-left:24px;
  font-size:14.5px;
  color:rgba(255,255,255,.8);
}
.cta-points li::before{
  content:"";
  position:absolute;
  left:2px;top:10px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--accent);
}
.form-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);
  padding:28px;
}
.form-card h3{font-size:19px;font-weight:600;color:#fff;margin:0 0 6px}
.form-card .form-hint{font-size:13px;color:rgba(255,255,255,.6);margin:0 0 20px}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:6px}
.form-field input,
.form-field textarea{
  width:100%;
  min-height:46px;
  padding:10px 14px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.94);
  color:var(--text);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.form-field textarea{min-height:96px;resize:vertical}
.form-field input:focus,
.form-field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 2px rgba(23,120,107,.45);
}
.form-field input::placeholder,
.form-field textarea::placeholder{color:var(--text-3)}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:6px}
.form-actions .note{font-size:12.5px;color:rgba(255,255,255,.55)}

/* ================= 页脚 ================= */
.site-footer{
  background:var(--deep-1);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
  font-size:14.5px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand),#2AA192)}
.footer-about{color:rgba(255,255,255,.62);font-size:14px;line-height:1.8;margin:0 0 18px;max-width:320px}
.footer-badges{display:flex;flex-wrap:wrap;gap:8px}
.footer-badges span{
  font-size:12.5px;
  border:1px solid rgba(255,255,255,.18);
  border-radius:999px;
  padding:4px 12px;
  color:rgba(255,255,255,.68);
}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin:0 0 16px}
.footer-list li{margin-bottom:10px}
.footer-list a{color:rgba(255,255,255,.72);font-size:14px}
.footer-list a:hover{color:#fff;text-decoration:underline}
.footer-contact li{
  display:flex;
  gap:10px;
  margin-bottom:12px;
  color:rgba(255,255,255,.72);
  font-size:14px;
}
.footer-contact i{color:var(--brand);margin-top:4px;font-size:13px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.52);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:#fff}

/* ================= 响应式 ================= */
@media (max-width:1199.98px){
  .sec{padding:80px 0}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-grid > div:last-child{grid-column:span 3}
}
@media (max-width:991.98px){
  .nav-toggle{display:inline-flex}
  .nav-inner .nav-menu{
    display:block;
    position:absolute;
    left:0;right:0;top:calc(100% + 1px);
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);
    padding:18px 20px 24px;
    border-radius:0 0 var(--r-lg) var(--r-lg);
  }
  .nav-inner .nav-menu.collapse.show{display:flex;flex-direction:column;align-items:stretch;gap:6px}
  .nav-links{flex-direction:column;align-items:stretch;gap:4px}
  .nav-link{padding:12px 14px;border-radius:10px}
  .nav-actions{margin-left:0;flex-direction:column;align-items:stretch;gap:10px;margin-top:14px}
  .nav-actions .btn-main{width:100%;min-height:48px}
  .nav-actions .icon-btn{width:100%;height:44px;justify-content:flex-start;padding-left:14px;gap:10px}
  .hero{padding:40px 0 64px}
  .hero-visual{margin-top:36px}
  .hero-back{left:-14px;width:60%;height:52%}
  .steps{grid-template-columns:1fr}
  .step + .step{border-left:0;border-top:1px dashed var(--line)}
  .step{padding:26px 24px}
  .steps-bar{margin:0 24px}
  .steps-foot{padding:16px 24px 22px}
  .case-row{grid-template-columns:1fr;gap:24px;padding:26px 0}
  .case-row:nth-child(even) .case-media{order:0}
  .sec{padding:72px 0}
  .cta-band{padding:72px 0}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-grid > div:last-child{grid-column:span 2}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  .brand-text{font-size:16px}
  .sec{padding:56px 0}
  .sec-tight{padding:48px 0}
  .hero-title{font-size:clamp(26px,7vw,34px)}
  .hero-sub{font-size:16px;margin-bottom:24px}
  .hero-cta{gap:12px}
  .hero-cta .btn-main,
  .hero-cta .btn-line{width:100%}
  .hero-img{aspect-ratio:16/11}
  .hero-float{right:0;left:0;bottom:-8px;max-width:none}
  .hero-visual{padding-bottom:76px}
  .channel-panel{padding:22px}
  .card-base{padding:20px}
  .cta-band{padding:56px 0}
  .form-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-grid > div:last-child{grid-column:span 1}
  .steps-wrap{border-radius:var(--r-md)}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .hero{padding:32px 0 52px}
  .sec-title{font-size:22px;padding-left:12px}
  .sec-desc{padding-left:12px;font-size:15px}
  .faq-side h2{font-size:22px;padding-left:12px}
  .faq-side p{padding-left:12px}
  .faq-accordion .accordion-button{font-size:15.5px;padding:16px 18px}
  .faq-accordion .accordion-body{padding:0 18px 18px}
  .cta-band h2{font-size:22px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: article */
:root{
  --c-primary:#17786B;
  --c-primary-dark:#0F5A51;
  --c-primary-soft:#E8F4F1;
  --c-accent:#FF7A2F;
  --c-accent-dark:#E9651C;
  --c-bg:#F6F8F7;
  --c-card:#FFFFFF;
  --c-deep-1:#0E2B27;
  --c-deep-2:#14453D;
  --c-text:#17211F;
  --c-text-2:#5A6A66;
  --c-text-3:#98A5A1;
  --c-line:#E2E8E5;
  --c-success:#2E9E6B;
  --c-warn:#E0A22A;
  --c-error:#D0483C;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:14px;
  --r-img:16px;
  --sh-1:0 1px 2px rgba(14,43,39,.06);
  --sh-2:0 10px 24px -12px rgba(14,43,39,.18);
  --sh-3:0 18px 40px -18px rgba(14,43,39,.28);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease)}
a:hover{color:var(--c-primary-dark)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4,h5{margin:0;color:var(--c-text);letter-spacing:0}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{padding-left:1.15em}
.container{width:100%;max-width:1200px;padding-left:16px;padding-right:16px;margin:0 auto}
@media (min-width:1200px){.container{max-width:1200px}}
.section{padding:88px 0}
.section-tight{padding:56px 0}
.sec-head{margin-bottom:32px}
.sec-title{
  position:relative;
  padding-left:16px;
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1.3;
}
.sec-title::before{
  content:"";
  position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  background:var(--c-primary);border-radius:2px;
}
.sec-sub{margin-top:10px;color:var(--c-text-2);font-size:15px;max-width:720px}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--ease),background-color var(--ease);
}
.site-header.is-stuck{box-shadow:var(--sh-2)}
.nav-inner{
  display:flex;align-items:center;gap:24px;
  min-height:64px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-text);flex:0 0 auto}
.brand:hover{color:var(--c-text)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-dark));
  color:#fff;font-weight:700;font-size:16px;line-height:1;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.2px;white-space:nowrap}
.nav-toggle{
  margin-left:auto;
  width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:#fff;color:var(--c-text);font-size:18px;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background-color var(--ease),border-color var(--ease),color var(--ease);
}
.nav-toggle:hover{background:var(--c-primary-soft);border-color:rgba(23,120,107,.3);color:var(--c-primary-dark)}
.nav-menu{align-items:center;justify-content:space-between;gap:24px;flex:1 1 auto}
.nav-links{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:999px;color:var(--c-text-2);font-size:15px;font-weight:500;
  white-space:nowrap;transition:background-color var(--ease),color var(--ease);
}
.nav-link:hover{background:rgba(23,120,107,.12);color:var(--c-primary-dark)}
.nav-link.active{background:var(--c-primary-soft);color:var(--c-primary-dark);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-text-2);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease);
}
.icon-btn:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:rgba(23,120,107,.3)}
.btn-sm-nav{padding:0 18px;height:40px;font-size:14px}
@media (min-width:992px){
  .nav-menu{display:flex !important;flex-direction:row}
  .nav-toggle{display:none}
}
@media (max-width:991.98px){
  .nav-inner{min-height:56px;flex-wrap:wrap;padding:6px 0}
  .nav-menu{
    width:100%;flex-basis:100%;border-top:1px solid var(--c-line);
    margin-top:8px;padding-top:12px;padding-bottom:8px;
  }
  .nav-links{flex-direction:column;align-items:stretch;gap:2px}
  .nav-link{height:44px;border-radius:var(--r-sm)}
  .nav-actions{width:100%;margin-top:12px}
  .nav-actions .btn-main{flex:1 1 auto;justify-content:center}
}

/* ============ Buttons & Badges ============ */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:10px;border:1px solid transparent;
  background:var(--c-accent);color:#fff;font-size:15px;font-weight:600;
  cursor:pointer;transition:background-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-main:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:10px;
  border:1.5px solid var(--c-primary);background:transparent;
  color:var(--c-primary-dark);font-size:15px;font-weight:600;
  transition:background-color var(--ease),color var(--ease),box-shadow var(--ease);
}
.btn-ghost:hover{background:rgba(23,120,107,.08);color:var(--c-primary-dark)}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  font-size:13px;font-weight:600;
}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:999px;
  background:rgba(23,120,107,.08);color:var(--c-text-2);font-size:13px;
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-size:14px;font-weight:600;
}
.text-link i{transition:transform var(--ease)}
.text-link:hover i{transform:translateX(3px)}

/* ============ Article head ============ */
.article-head{
  background:#fff;
  border-bottom:1px solid var(--c-line);
  padding:28px 0 36px;
}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--c-text-2);margin-bottom:20px;
}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-primary-dark)}
.crumb .sep{color:var(--c-text-3)}
.crumb .current{
  color:var(--c-text-2);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-head h1{
  font-size:clamp(28px,4vw,42px);
  font-weight:700;line-height:1.3;letter-spacing:0;
  margin:14px 0 18px;max-width:900px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-size:13px;color:var(--c-text-2);
}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--c-primary)}

/* ============ Layout ============ */
.layout-wrap{padding:44px 0 72px}
.article-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:32px;
}
@media (max-width:767.98px){.article-card{padding:20px}}

/* ============ Article body typography ============ */
.article-body{max-width:800px;font-size:16px;line-height:1.85;color:var(--c-text)}
.article-body h2{
  position:relative;padding-left:16px;margin:48px 0 18px;
  font-size:clamp(21px,2.3vw,27px);font-weight:700;line-height:1.35;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  background:var(--c-primary);border-radius:2px;
}
.article-body h3{margin:28px 0 12px;font-size:20px;font-weight:600;line-height:1.4}
.article-body h4{margin:22px 0 10px;font-size:17px;font-weight:600}
.article-body p{margin:0 0 1.1em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.2em}
.article-body li{margin-bottom:.5em}
.article-body ul li::marker{color:var(--c-primary);font-size:1.05em}
.article-body ol li::marker{color:var(--c-primary);font-weight:600}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--c-primary);
  background:var(--c-primary-soft);border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--c-primary-dark);
}
.article-body blockquote p{margin:0}
.article-body img{border-radius:var(--r-md);margin:20px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{
  margin-top:10px;text-align:center;font-size:13px;color:var(--c-text-2);
}
.article-body a{border-bottom:1px solid rgba(23,120,107,.35)}
.article-body a:hover{border-bottom-color:var(--c-primary-dark)}
.article-body table{
  width:100%;margin:24px 0;border-collapse:collapse;font-size:14px;
  border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--c-line);text-align:left}
.article-body th{background:var(--c-primary-soft);color:var(--c-primary-dark);font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAFCFB}
.article-body .table-wrap{overflow-x:auto;margin:24px 0}
.article-body code{
  background:#F1F4F3;border-radius:6px;padding:2px 6px;font-size:14px;
}
.empty-state{
  text-align:center;padding:56px 20px;
}
.empty-state i{font-size:40px;color:var(--c-text-3)}
.empty-state h2{margin:18px 0 10px;padding:0;font-size:22px}
.empty-state h2::before{display:none}
.empty-state p{color:var(--c-text-2);margin-bottom:22px}

/* ============ Sidebar ============ */
.side-col{position:relative}
.side-sticky{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px}
@media (max-width:991.98px){.side-sticky{position:static}}
.side-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:22px;
}
.side-title{
  display:flex;align-items:center;gap:9px;
  font-size:16px;font-weight:700;margin-bottom:14px;
}
.side-title i{color:var(--c-primary)}
.toc-list{list-style:none;margin:0;padding:0;font-size:14px}
.toc-list li{margin-bottom:2px}
.toc-list li.toc-sub{padding-left:16px}
.toc-list a{
  display:block;padding:7px 10px;border-radius:var(--r-sm);
  color:var(--c-text-2);line-height:1.5;
  border-left:2px solid transparent;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease);
}
.toc-list a:hover,.toc-list a.is-active{
  background:var(--c-primary-soft);color:var(--c-primary-dark);border-left-color:var(--c-primary);
}
.mini-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.mini-item{display:flex;gap:12px;align-items:flex-start}
.mini-thumb{
  flex:0 0 76px;width:76px;aspect-ratio:16/11;border-radius:var(--r-sm);
  overflow:hidden;background:var(--c-primary-soft);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover}
.mini-body h4{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:6px}
.mini-body h4 a{color:var(--c-text)}
.mini-body h4 a:hover{color:var(--c-primary-dark)}
.mini-body .mini-meta{font-size:12.5px;color:var(--c-text-3)}

/* ============ Related cards ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:991.98px){.card-grid{grid-template-columns:repeat(2,1fr);gap:20px}}
@media (max-width:575.98px){.card-grid{grid-template-columns:1fr}}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.news-card:hover{border-color:rgba(23,120,107,.3);box-shadow:var(--sh-2);transform:translateY(-2px)}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-soft)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 260ms ease-out}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.news-body h3{
  font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3 a{color:var(--c-text)}
.news-body h3 a:hover{color:var(--c-primary-dark)}
.news-body p{
  font-size:14px;color:var(--c-text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);
}

/* ============ Post nav ============ */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px}
@media (max-width:767.98px){.post-nav{grid-template-columns:1fr}}
.post-nav-item{
  display:flex;flex-direction:column;gap:6px;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--sh-1);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.post-nav-item:hover{border-color:rgba(23,120,107,.3);box-shadow:var(--sh-2)}
.post-nav-item .pn-label{font-size:13px;color:var(--c-text-3);display:inline-flex;align-items:center;gap:7px}
.post-nav-item .pn-title{font-size:16px;font-weight:600;color:var(--c-text);line-height:1.5}
.post-nav-item:hover .pn-title{color:var(--c-primary-dark)}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start}
@media (max-width:991.98px){.faq-wrap{grid-template-columns:1fr;gap:24px}}
.accordion-item-faq{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.accordion-item-faq:hover{border-color:rgba(23,120,107,.3);box-shadow:var(--sh-2)}
.faq-btn{
  width:100%;text-align:left;background:#fff;border:0;cursor:pointer;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--c-text);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:color var(--ease);
}
.faq-btn:hover{color:var(--c-primary-dark)}
.faq-btn .chev{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform var(--ease),background-color var(--ease),color var(--ease);
}
.faq-btn[aria-expanded="true"]{color:var(--c-primary-dark)}
.faq-btn[aria-expanded="true"] .chev{transform:rotate(180deg);background:var(--c-primary);color:#fff}
.faq-body{padding:0 20px 20px;font-size:15px;color:var(--c-text-2);line-height:1.8}

/* ============ CTA band ============ */
.cta-band{
  background:linear-gradient(135deg,var(--c-deep-1),var(--c-deep-2));
  color:#fff;border-radius:var(--r-lg);
  padding:44px;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  background:radial-gradient(circle,rgba(255,122,47,.22),transparent 62%);
  pointer-events:none;
}
.cta-inner{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:center;position:relative;z-index:1}
@media (max-width:991.98px){.cta-inner{grid-template-columns:1fr}}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.74);font-size:15px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
@media (max-width:991.98px){.cta-actions{justify-content:flex-start}}
.btn-outline-light-2{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:10px;
  border:1.5px solid rgba(255,255,255,.45);background:transparent;
  color:#fff;font-size:15px;font-weight:600;
  transition:background-color var(--ease),border-color var(--ease);
}
.btn-outline-light-2:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}
.cta-note{margin-top:14px;font-size:13px;color:rgba(255,255,255,.6)}
@media (max-width:575.98px){.cta-band{padding:28px 20px}.btn-main,.btn-ghost,.btn-outline-light-2{width:100%}}

/* ============ Footer ============ */
.site-footer{
  margin-top:88px;
  background:linear-gradient(160deg,var(--c-deep-1),var(--c-deep-2));
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575.98px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14)}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin-bottom:18px}
.footer-badges{display:flex;flex-wrap:wrap;gap:8px}
.footer-badges span{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.1);color:rgba(255,255,255,.8);font-size:12.5px;
}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-list,.footer-contact{list-style:none;margin:0;padding:0;font-size:14px}
.footer-list li{margin-bottom:10px}
.footer-list a{color:rgba(255,255,255,.72)}
.footer-list a:hover{color:#fff;text-decoration:underline}
.footer-contact li{display:flex;gap:10px;margin-bottom:12px;color:rgba(255,255,255,.72);line-height:1.6;align-items:flex-start}
.footer-contact i{color:var(--c-accent);margin-top:4px}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ utilities ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary-dark);
  background:var(--c-primary-soft);border-radius:999px;height:28px;padding:0 12px;
  margin-bottom:16px;
}
.divider{height:1px;background:var(--c-line);border:0;margin:0}
@media (max-width:991.98px){
  .section{padding:72px 0}
  .layout-wrap{padding:32px 0 56px}
  .site-footer{margin-top:72px;padding-top:48px}
}
@media (max-width:767.98px){
  .section{padding:56px 0}
  .article-head{padding:20px 0 28px}
  .article-head h1{font-size:26px}
  .cta-band{margin:0 -4px}
}
@media (max-width:575.98px){
  body{font-size:15.5px}
  .sec-title{font-size:22px}
  .brand-text{font-size:15.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* roulang page: category1 */
:root{
  --brand:#17786B;
  --brand-dark:#0F5A51;
  --brand-soft:#E8F4F1;
  --accent:#FF7A2F;
  --accent-dark:#E9651C;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --ink:#17211F;
  --muted:#5A6A66;
  --disabled:#98A5A1;
  --line:#E2E8E5;
  --dark-1:#0E2B27;
  --dark-2:#14453D;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --s1:0 1px 2px rgba(14,43,39,.06);
  --s2:0 10px 24px -12px rgba(14,43,39,.18);
  --s3:0 20px 40px -20px rgba(14,43,39,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease),background-color .18s var(--ease);}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--s2);}
.nav-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:64px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand);
  color:#fff;
  font-size:18px;
  font-weight:700;
  border-radius:12px;
  box-shadow:var(--s1);
  flex:0 0 auto;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:0;white-space:nowrap;}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--brand);
  font-size:18px;
  cursor:pointer;
}
.nav-toggle:hover{background:var(--brand-soft);border-color:rgba(23,120,107,.3);}
.nav-menu{display:flex;align-items:center;justify-content:space-between;flex:1 1 auto;gap:20px;}
.nav-links{display:flex;align-items:center;gap:6px;flex-wrap:wrap;}
.nav-link{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 14px;
  border-radius:999px;
  font-size:15px;
  color:var(--ink);
  white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.nav-link:hover{background:rgba(23,120,107,.12);color:var(--brand-dark);}
.nav-link.active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--muted);
  cursor:pointer;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(23,120,107,.35);background:var(--brand-soft);}
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 24px;
  background:var(--accent);
  color:#fff;
  font-size:15px;
  font-weight:600;
  border:0;
  border-radius:10px;
  cursor:pointer;
  transition:background-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-main:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--s2);}
.btn-main:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 24px;
  background:transparent;
  color:var(--brand-dark);
  font-size:15px;
  font-weight:600;
  border:1.5px solid var(--brand);
  border-radius:10px;
  cursor:pointer;
  transition:background-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-ghost:hover{background:rgba(23,120,107,.08);color:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--s1);}
.btn-sm-nav{min-height:40px;padding:0 18px;font-size:14px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:18px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li::after{content:"/";color:var(--line);}
.crumb li:last-child::after{display:none;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .current{color:var(--brand-dark);font-weight:600;}

/* ---------- 分类 Hero ---------- */
.cat-hero{padding:34px 0 60px;background:
  radial-gradient(1100px 420px at 88% -10%,rgba(23,120,107,.10),transparent 62%),
  linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.cat-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.92fr);gap:52px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  background:var(--brand-soft);
  color:var(--brand-dark);
  font-size:13px;
  font-weight:600;
  border-radius:999px;
  margin-bottom:18px;
}
.eyebrow i{font-size:12px;}
.cat-hero h1{
  font-size:clamp(28px,3.6vw,42px);
  font-weight:700;
  line-height:1.26;
  letter-spacing:0;
  margin-bottom:16px;
}
.lede{font-size:17px;color:var(--muted);max-width:600px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px;}
.micro-list{display:flex;flex-wrap:wrap;gap:10px;}
.micro-list li{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:13px;
  color:var(--muted);
  box-shadow:var(--s1);
}
.micro-list i{color:var(--brand);font-size:12px;}
.cat-hero-media{position:relative;}
.cat-hero-media::before{
  content:"";
  position:absolute;
  inset:22px -18px -22px 18px;
  background:url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  border-radius:16px;
  opacity:.5;
  z-index:0;
}
.cat-hero-media img{
  position:relative;
  z-index:1;
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:16px;
  border:1px solid var(--line);
  box-shadow:var(--s2);
}
.media-note{
  position:relative;
  z-index:1;
  margin-top:12px;
  font-size:13px;
  color:var(--muted);
  text-align:center;
}

/* ---------- 通用板块 ---------- */
.section{padding:92px 0;}
.section.tight{padding:76px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
h2{
  position:relative;
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1.3;
  padding-left:16px;
  margin-bottom:14px;
}
h2::before{
  content:"";
  position:absolute;
  left:0;top:.18em;
  width:4px;
  height:1em;
  background:var(--brand);
  border-radius:2px;
}
.section-head.center h2{padding-left:0;}
.section-head.center h2::before{display:none;}
.section-head p{color:var(--muted);font-size:16px;}

/* ---------- 入口长条卡 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.entry-card{
  display:flex;
  gap:20px;
  padding:24px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--s1);
  color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.entry-card:hover,.entry-card:focus-visible{
  border-color:rgba(23,120,107,.35);
  box-shadow:var(--s2);
  transform:translateY(-2px);
  color:var(--ink);
}
.entry-icon{
  flex:0 0 auto;
  width:54px;height:54px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:20px;
  border-radius:14px;
}
.entry-body{display:block;min-width:0;}
.entry-title{
  display:block;
  font-size:17px;
  font-weight:600;
  margin-bottom:8px;
}
.entry-text{
  display:block;
  font-size:15px;
  color:var(--muted);
  line-height:1.72;
  margin-bottom:12px;
}
.entry-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
}
.entry-link i{transition:transform .18s var(--ease);}
.entry-card:hover .entry-link i{transform:translateX(4px);}

/* ---------- 三步流程 ---------- */
.steps-band{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;position:relative;}
.step{position:relative;padding:0 32px 26px;border-left:1px dashed var(--line);}
.step:first-child{border-left:0;padding-left:0;}
.step-num{
  font-size:64px;
  font-weight:700;
  line-height:1;
  color:rgba(23,120,107,.10);
  margin-bottom:6px;
}
.step h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.step p{font-size:15px;color:var(--muted);}
.step-tag{
  display:inline-block;
  margin-top:14px;
  font-size:13px;
  color:var(--brand-dark);
  background:var(--brand-soft);
  border-radius:999px;
  padding:5px 12px;
}
.steps-line{height:1px;background:linear-gradient(90deg,rgba(23,120,107,.45),rgba(23,120,107,.08));margin-top:8px;}

/* ---------- 准备清单 ---------- */
.prep-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:48px;align-items:center;}
.prep-grid img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:16px;
  border:1px solid var(--line);
  box-shadow:var(--s2);
}
.prep-list{margin-top:6px;}
.prep-list li{
  display:flex;
  gap:14px;
  padding:16px 0;
  border-bottom:1px solid var(--line);
}
.prep-list li:last-child{border-bottom:0;padding-bottom:0;}
.prep-list i{color:var(--brand);font-size:15px;margin-top:6px;}
.prep-list strong{display:block;font-size:16px;font-weight:600;margin-bottom:4px;}
.prep-list span{display:block;font-size:14.5px;color:var(--muted);}

/* ---------- 数据/要点条 ---------- */
.fact-bar{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--s1);
  overflow:hidden;
}
.fact{padding:26px 24px;border-left:1px solid var(--line);}
.fact:first-child{border-left:0;}
.fact .num{
  font-size:26px;
  font-weight:600;
  color:var(--accent);
  margin-bottom:6px;
}
.fact .label{font-size:16px;font-weight:600;margin-bottom:6px;}
.fact p{font-size:14px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.32fr);gap:48px;align-items:start;}
.faq-list .accordion-item{
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--s1);
}
.faq-list .accordion-item:last-child{margin-bottom:0;}
.faq-list .accordion-button{
  width:100%;
  padding:20px 22px;
  background:#fff;
  color:var(--ink);
  font-size:16.5px;
  font-weight:600;
  line-height:1.55;
  text-align:left;
  border:0;
  box-shadow:none;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.faq-list .accordion-button:hover{background:var(--brand-soft);}
.faq-list .accordion-button:not(.collapsed){color:var(--brand-dark);background:var(--brand-soft);}
.faq-list .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px;}
.faq-list .accordion-button::after{
  content:"";
  width:10px;height:10px;
  margin-left:16px;
  border-right:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  background-image:none;
  transform:rotate(45deg);
  transition:transform .2s var(--ease);
  flex:0 0 auto;
}
.faq-list .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);}
.faq-list .accordion-body{
  padding:4px 22px 22px;
  font-size:15px;
  color:var(--muted);
  line-height:1.8;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--dark-1) 0%,var(--dark-2) 100%);
  color:#fff;
  padding:64px 0;
  border-top:1px solid rgba(255,255,255,.08);
}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-inner h2{color:#fff;padding-left:16px;margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.78);max-width:620px;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.btn-light{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:46px;padding:0 26px;
  background:#fff;color:var(--dark-1);
  font-weight:600;font-size:15px;
  border:0;border-radius:10px;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.btn-light:hover{background:#F1F6F4;color:var(--dark-1);transform:translateY(-1px);box-shadow:var(--s2);}
.btn-outline-light-2{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:46px;padding:0 26px;
  background:transparent;color:#fff;
  font-weight:600;font-size:15px;
  border:1.5px solid rgba(255,255,255,.55);border-radius:10px;cursor:pointer;
  transition:background-color .2s var(--ease),border-color .2s var(--ease);
}
.btn-outline-light-2:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark-1);color:rgba(255,255,255,.78);padding:64px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff;box-shadow:none;}
.footer-about{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.7);margin-bottom:18px;}
.footer-badges{display:flex;flex-wrap:wrap;gap:8px;}
.footer-badges span{
  padding:5px 12px;
  font-size:12.5px;
  color:rgba(255,255,255,.82);
  border:1px solid rgba(255,255,255,.2);
  border-radius:999px;
}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:14.5px;color:rgba(255,255,255,.72);}
.footer-list a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.72);margin-bottom:12px;}
.footer-contact i{color:rgba(255,255,255,.55);margin-top:6px;}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.58);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .cat-hero-grid{gap:36px;}
  .section{padding:80px 0;}
  .prep-grid,.faq-wrap{gap:36px;}
}
@media (max-width:991.98px){
  .nav-toggle{display:inline-flex;}
  .nav-menu{
    position:absolute;
    left:0;right:0;top:100%;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:14px 16px 20px;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:var(--s2);
  }
  .nav-menu.show,.nav-menu.collapsing{display:flex;}
  .nav-links{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-link{height:46px;border-radius:10px;justify-content:flex-start;}
  .nav-actions{justify-content:space-between;padding-top:10px;border-top:1px solid var(--line);margin-top:8px;}
  .btn-sm-nav{min-height:46px;flex:1 1 auto;}
  .cat-hero{padding:26px 0 48px;}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;}
  .cat-hero-media img{aspect-ratio:16/10;}
  .entry-grid{grid-template-columns:1fr;}
  .steps-band{grid-template-columns:1fr;}
  .step{border-left:0;border-top:1px dashed var(--line);padding:26px 0 0;margin-top:26px;}
  .step:first-child{border-top:0;padding-top:0;margin-top:0;}
  .prep-grid{grid-template-columns:1fr;gap:30px;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .fact-bar{grid-template-columns:1fr;}
  .fact{border-left:0;border-top:1px solid var(--line);}
  .fact:first-child{border-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .container{padding:0 16px;}
  .section{padding:60px 0;}
  .section.tight{padding:56px 0;}
  .brand-text{font-size:15.5px;}
  .cat-hero-media::before{inset:16px -10px -16px 10px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .entry-card{flex-direction:column;gap:14px;padding:20px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn-light,.cta-actions .btn-outline-light-2{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:575.98px){
  .cat-hero h1{font-size:26px;}
  .lede{font-size:15.5px;}
  .entry-title{font-size:16px;}
  .fact .num{font-size:23px;}
  .micro-list li{font-size:12.5px;padding:6px 12px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --brand:#17786B;
  --brand-dark:#0F5A51;
  --brand-light:#E8F4F1;
  --accent:#FF7A2F;
  --accent-dark:#E9651C;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --deep-a:#0E2B27;
  --deep-b:#14453D;
  --text:#17211F;
  --muted:#5A6A66;
  --disabled:#98A5A1;
  --line:#E2E8E5;
  --ok:#2E9E6B;
  --warn:#E0A22A;
  --err:#D0483C;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --sh1:0 1px 2px rgba(14,43,39,.06);
  --sh2:0 10px 24px -12px rgba(14,43,39,.18);
  --sh3:0 18px 40px -18px rgba(14,43,39,.26);
  --ease:200ms ease-out;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Inter",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease)}
a:hover{color:var(--brand-dark)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4,h5{margin:0;color:var(--text);letter-spacing:0}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto}
@media (max-width:575.98px){.container{padding-left:16px;padding-right:16px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh2)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;font-weight:700;font-size:18px;flex:0 0 auto;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.2px;white-space:nowrap}
.nav-toggle{
  display:none;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);
  width:44px;height:44px;align-items:center;justify-content:center;color:var(--brand);cursor:pointer;
}
.nav-menu{display:flex;align-items:center;justify-content:flex-end;gap:24px;flex:1 1 auto}
.nav-links{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav-link{
  display:inline-block;padding:8px 14px;border-radius:999px;font-size:15px;color:var(--text);
  transition:background-color var(--ease),color var(--ease);
}
.nav-link:hover{background:rgba(23,120,107,.12);color:var(--brand-dark)}
.nav-link.active{background:var(--brand-light);color:var(--brand-dark);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;
  color:var(--muted);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
  transition:color var(--ease),border-color var(--ease),background-color var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(23,120,107,.4);background:var(--brand-light)}

/* ---------- buttons ---------- */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all var(--ease);text-align:center;
}
.btn-main{background:var(--accent);color:#fff;box-shadow:var(--sh1)}
.btn-main:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--brand-dark);border-color:var(--brand);border-width:1.5px}
.btn-ghost:hover{background:rgba(23,120,107,.08);color:var(--brand-dark)}
.btn-sm-nav{min-height:40px;padding:0 18px;font-size:14px}
.btn-main:disabled,.btn-ghost:disabled{background:var(--disabled);border-color:var(--disabled);color:#fff;cursor:not-allowed;transform:none}

/* ---------- generic blocks ---------- */
.section{padding:96px 0}
.section-sm{padding:72px 0}
.section-alt{background:#fff}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  background:var(--brand-light);color:var(--brand-dark);font-size:13px;font-weight:600;
}
.badge-soft{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--muted);font-size:13px;
}
.h2-line{
  position:relative;padding-left:16px;font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;
}
.h2-line::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:4px;background:var(--brand);
}
.section-head{max-width:760px;margin-bottom:48px}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px}
.lead-muted{color:var(--muted)}

/* ---------- breadcrumb ---------- */
.crumbs{padding:20px 0 0;font-size:13px;color:var(--muted)}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumbs li{display:inline-flex;align-items:center;gap:8px}
.crumbs li::after{content:"/";color:var(--line)}
.crumbs li:last-child::after{content:""}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs .current{color:var(--disabled)}

/* ---------- page hero ---------- */
.page-hero{padding:36px 0 24px;background:#fff;border-bottom:1px solid var(--line)}
.page-hero-inner{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:40px;align-items:flex-end}
.page-hero h1{font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.25;max-width:820px}
.page-hero .hero-sub{margin-top:18px;max-width:680px;color:var(--muted);font-size:17px}
.page-hero .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-edge{text-align:right}
.hero-edge .edge-line{width:100%;height:1px;background:linear-gradient(90deg,var(--brand-light),var(--brand));margin-bottom:16px}
.hero-edge .edge-num{font-size:38px;font-weight:700;color:var(--brand);line-height:1.1}
.hero-edge .edge-label{font-size:13px;color:var(--muted);margin-top:4px}
.hero-edge .edge-item + .edge-item{margin-top:26px}

/* ---------- alternating feature rows ---------- */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:40px 0}
.feature-row + .feature-row{border-top:1px dashed var(--line)}
.feature-media{position:relative}
.feature-media img{border-radius:var(--r-img);width:100%;aspect-ratio:16/10;object-fit:cover;box-shadow:var(--sh2)}
.feature-media .media-tag{
  position:absolute;left:16px;bottom:16px;background:rgba(14,43,39,.82);color:#fff;
  font-size:13px;padding:6px 12px;border-radius:999px;backdrop-filter:blur(4px);
}
.feature-body h3{font-size:22px;font-weight:600;margin:14px 0 16px;line-height:1.4}
.feature-body p{color:var(--muted)}
.feature-link{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;margin-top:8px}
.feature-link i{transition:transform var(--ease)}
.feature-link:hover i{transform:translateX(4px)}
.feature-row.reverse .feature-media{order:2}

/* ---------- points bar ---------- */
.points-bar{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh1);
}
.point-item{padding:32px 28px;border-right:1px solid var(--line)}
.point-item:last-child{border-right:0}
.point-item .point-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-light);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px;
}
.point-item h4{font-size:17px;font-weight:600;margin-bottom:8px}
.point-item p{color:var(--muted);font-size:15px}

/* ---------- verify cards ---------- */
.verify-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.verify-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--sh1);transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.verify-card:hover{border-color:rgba(23,120,107,.3);box-shadow:var(--sh2);transform:translateY(-2px)}
.verify-card .vc-icon{
  width:42px;height:42px;border-radius:11px;background:var(--brand-light);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:18px;
}
.verify-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.verify-card p{font-size:15px;color:var(--muted)}

/* ---------- checklist ---------- */
.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 32px}
.check-item{display:flex;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px}
.check-item i{color:var(--ok);margin-top:5px;font-size:16px}
.check-item h4{font-size:16px;font-weight:600;margin-bottom:6px}
.check-item p{font-size:14px;color:var(--muted);margin:0}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.accordion-item{
  background:#fff;border:1px solid var(--line)!important;border-radius:var(--r-md)!important;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh1);
}
.accordion-button{
  background:#fff!important;font-weight:600;font-size:16px;color:var(--text);padding:18px 20px;
  box-shadow:none!important;border:0;
}
.accordion-button:not(.collapsed){color:var(--brand-dark)!important;background:var(--brand-light)!important}
.accordion-button::after{
  background-image:none;content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  width:auto;height:auto;font-size:13px;color:var(--brand);transition:transform var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg)}
.accordion-body{padding:4px 20px 20px;color:var(--muted);font-size:15px}

/* ---------- form ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field.full{grid-column:1 / -1}
.form-label{font-size:13px;color:var(--muted)}
.form-control,.form-select{
  height:46px;border-radius:var(--r-btn);border:1px solid var(--line);padding:0 14px;
  background:#fff;font-size:15px;transition:border-color var(--ease),box-shadow var(--ease);
}
textarea.form-control{height:auto;padding:12px 14px;line-height:1.7;resize:vertical}
.form-control:focus,.form-select:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(23,120,107,.18);outline:none;
}
.form-hint{font-size:13px;color:var(--muted)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh2)}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(160deg,var(--deep-a),var(--deep-b));
  color:#fff;padding:80px 0;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:rgba(255,255,255,.14);
}
.cta-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:40px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.35}
.cta-band p{color:rgba(255,255,255,.75);margin-top:14px;max-width:620px}
.cta-actions{display:flex;flex-direction:column;gap:14px;min-width:240px}
.cta-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5)}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- footer ---------- */
.site-footer{background:var(--deep-a);color:rgba(255,255,255,.72);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.footer-about{font-size:14px;color:rgba(255,255,255,.66);max-width:340px}
.footer-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.footer-badges span{
  font-size:12px;padding:5px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.2);
  color:rgba(255,255,255,.8);
}
.footer-title{font-size:15px;color:#fff;font-weight:600;margin-bottom:18px}
.footer-list li{margin-bottom:10px}
.footer-list a{color:rgba(255,255,255,.72);font-size:14px}
.footer-list a:hover{color:#fff;text-decoration:underline}
.footer-contact li{display:flex;gap:10px;font-size:14px;margin-bottom:12px;color:rgba(255,255,255,.72)}
.footer-contact i{color:var(--brand-light);margin-top:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 28px;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .section{padding:80px 0}
  .feature-row{gap:40px}
  .verify-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:991.98px){
  .nav-toggle{display:inline-flex}
  .nav-menu{
    display:none;flex-direction:column;align-items:stretch;gap:12px;
    position:absolute;left:16px;right:16px;top:calc(100% + 8px);background:#fff;
    border:1px solid var(--line);border-radius:var(--r-lg);padding:16px;box-shadow:var(--sh3);
  }
  .nav-menu.show{display:flex}
  .nav-links{flex-direction:column;align-items:stretch;gap:4px}
  .nav-link{padding:12px 14px;border-radius:var(--r-md)}
  .nav-actions{flex-direction:column-reverse;align-items:stretch;gap:10px}
  .nav-actions .btn-main{width:100%;min-height:48px}
  .icon-btn{width:100%}
  .page-hero-inner{grid-template-columns:1fr;gap:28px}
  .hero-edge{text-align:left}
  .hero-edge .edge-item{display:inline-block;margin-right:32px}
  .hero-edge .edge-item + .edge-item{margin-top:0}
  .feature-row{grid-template-columns:1fr;gap:28px;padding:32px 0}
  .feature-row.reverse .feature-media{order:0}
  .points-bar{grid-template-columns:1fr}
  .point-item{border-right:0;border-bottom:1px solid var(--line)}
  .point-item:last-child{border-bottom:0}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .cta-inner{grid-template-columns:1fr}
  .cta-actions{flex-direction:row;flex-wrap:wrap;min-width:0}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767.98px){
  .section{padding:64px 0}
  .section-sm{padding:56px 0}
  .section-head{margin-bottom:32px}
  .check-list{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:22px}
  .verify-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .cta-band{padding:64px 0}
}
@media (max-width:575.98px){
  body{font-size:15px}
  .brand-text{font-size:15px}
  .hero-cta .btn-main,.hero-cta .btn-ghost{width:100%}
  .feature-body h3{font-size:20px}
  .feature-media img{aspect-ratio:4/3}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --primary:#17786B;
  --primary-dark:#0F5A51;
  --primary-soft:#E8F4F1;
  --accent:#FF7A2F;
  --accent-dark:#E9651C;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --deep:#0E2B27;
  --deep-2:#14453D;
  --ink:#17211F;
  --ink-2:#5A6A66;
  --muted:#98A5A1;
  --line:#E2E8E5;
  --success:#2E9E6B;
  --warn:#E0A22A;
  --danger:#D0483C;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --sh1:0 1px 2px rgba(14,43,39,.06);
  --sh2:0 10px 24px -12px rgba(14,43,39,.18);
  --sh3:0 18px 42px -20px rgba(14,43,39,.28);
  --t:180ms ease-out;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Segoe UI",Roboto,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t);}
a:hover{color:var(--primary-dark);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3;}
p{margin:0 0 1.1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1240px;
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh2);}
.nav-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:64px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  font-weight:700;
  font-size:17px;
  flex-shrink:0;
}
.brand:hover{color:var(--primary-dark);}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:10px;
  background:var(--primary);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:16px;
  font-weight:700;
  flex-shrink:0;
}
.brand-text{white-space:nowrap;}
.nav-toggle{
  margin-left:auto;
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:var(--r-btn);
  color:var(--ink);
  font-size:17px;
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary);}
.nav-menu{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex:1;
  gap:20px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  flex-wrap:wrap;
}
.nav-link{
  display:inline-block;
  padding:8px 14px;
  border-radius:999px;
  color:var(--ink-2);
  font-size:15px;
  white-space:nowrap;
  transition:background-color var(--t),color var(--t);
}
.nav-link:hover{background:rgba(23,120,107,.12);color:var(--primary-dark);}
.nav-link.active{color:var(--primary-dark);background:var(--primary-soft);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;
  height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-2);
  display:grid;
  place-items:center;
  cursor:pointer;
  transition:border-color var(--t),color var(--t),background-color var(--t);
}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft);}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 24px;
  border-radius:var(--r-btn);
  background:var(--accent);
  color:#fff;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-main:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2);}
.btn-main:active{transform:translateY(0);}
.btn-main:disabled{background:var(--muted);cursor:not-allowed;transform:none;box-shadow:none;}
.btn-sm-nav{min-height:40px;padding:0 18px;font-size:14px;}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1.5px solid var(--primary);
  color:var(--primary-dark);
  background:transparent;
  font-size:15px;
  font-weight:600;
  transition:background-color var(--t),color var(--t),transform var(--t);
}
.btn-ghost:hover{background:rgba(23,120,107,.08);color:var(--primary-dark);transform:translateY(-1px);}
.btn-ghost.on-dark{border-color:rgba(255,255,255,.6);color:#fff;}
.btn-ghost.on-dark:hover{background:rgba(255,255,255,.12);color:#fff;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
}
.text-link:hover{color:var(--primary-dark);gap:10px;}
.text-link i{font-size:12px;transition:transform var(--t);}
.text-link:hover i{transform:translateX(2px);}

/* ---------- 通用元素 ---------- */
.badge-soft{
  display:inline-block;
  padding:5px 14px;
  border-radius:999px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
}
.tag{
  display:inline-block;
  padding:3px 10px;
  border-radius:999px;
  background:rgba(23,120,107,.1);
  color:var(--primary-dark);
  font-size:12.5px;
  font-weight:600;
}
.sec-title{
  position:relative;
  padding-left:16px;
  font-size:clamp(24px,3vw,34px);
}
.sec-title::before{
  content:"";
  position:absolute;
  left:0;
  top:.18em;
  bottom:.18em;
  width:4px;
  border-radius:2px;
  background:var(--primary);
}
.sec-sub{color:var(--ink-2);font-size:15px;max-width:660px;}

/* ---------- 面包屑 ---------- */
.crumb{
  padding:22px 0 0;
  font-size:13.5px;
  color:var(--ink-2);
}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{margin:0 8px;color:var(--muted);}
.crumb .cur{color:var(--muted);}

/* ---------- 页面首屏 ---------- */
.page-hero{
  padding:18px 0 44px;
  background:linear-gradient(180deg,#fff 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.page-hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:40px;
  align-items:end;
  margin-top:26px;
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,44px);
  font-weight:700;
  line-height:1.25;
  margin:16px 0 14px;
  max-width:760px;
}
.page-hero .lead{
  color:var(--ink-2);
  font-size:17px;
  max-width:620px;
  margin:0;
}
.anchor-bar{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  padding:14px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
}
.anchor-pill{
  display:inline-block;
  padding:7px 14px;
  border-radius:999px;
  font-size:13.5px;
  color:var(--ink-2);
  background:#F2F5F4;
  transition:background-color var(--t),color var(--t);
}
.anchor-pill:hover{background:var(--primary-soft);color:var(--primary-dark);}
.anchor-pill.is-active{background:var(--primary);color:#fff;font-weight:600;}

/* ---------- 支持主体 ---------- */
.support-body{padding:64px 0 72px;}
.toc-card{
  position:sticky;
  top:96px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 20px;
  box-shadow:var(--sh1);
}
.toc-title{
  font-size:16px;
  font-weight:700;
  padding-bottom:12px;
  margin-bottom:12px;
  border-bottom:1px solid var(--line);
}
.toc-list li + li{margin-top:4px;}
.toc-list a{
  display:block;
  padding:8px 12px;
  border-radius:var(--r-sm);
  font-size:14.5px;
  color:var(--ink-2);
  border-left:2px solid transparent;
}
.toc-list a:hover{background:var(--primary-soft);color:var(--primary-dark);border-left-color:var(--primary);}
.toc-note{
  margin-top:16px;
  padding:12px 14px;
  border-radius:var(--r-sm);
  background:var(--primary-soft);
  font-size:13px;
  color:var(--primary-dark);
  line-height:1.7;
}

.group{padding-bottom:44px;margin-bottom:44px;border-bottom:1px solid var(--line);}
.group:last-child{border-bottom:0;padding-bottom:0;margin-bottom:0;}
.group > h2{
  position:relative;
  padding-left:16px;
  font-size:clamp(22px,2.4vw,28px);
  margin-bottom:16px;
}
.group > h2::before{
  content:"";
  position:absolute;
  left:0;top:.2em;bottom:.2em;
  width:4px;border-radius:2px;background:var(--primary);
}
.group > h2 .num{
  display:inline-block;
  margin-right:10px;
  font-size:14px;
  color:var(--accent);
  font-weight:700;
  vertical-align:2px;
}
.group p{color:var(--ink-2);}
.check-list{margin:18px 0 22px;}
.check-list li{
  position:relative;
  padding:10px 0 10px 30px;
  font-size:15.5px;
  color:var(--ink);
  border-bottom:1px dashed var(--line);
}
.check-list li:last-child{border-bottom:0;}
.check-list li::before{
  content:"";
  position:absolute;
  left:6px;
  top:20px;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--primary);
}
.check-list li strong{color:var(--primary-dark);}

.figure-card{
  display:grid;
  grid-template-columns:280px minmax(0,1fr);
  gap:24px;
  align-items:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh1);
  margin-top:8px;
}
.figure-card img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-img);
}
.figure-card .fig-body h3{font-size:18px;margin-bottom:8px;}
.figure-card .fig-body p{font-size:14.5px;margin-bottom:10px;}
.fig-cap{font-size:13px;color:var(--muted);}

/* ---------- 手风琴 ---------- */
.faq .accordion-item{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:#fff;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh1);
  transition:border-color var(--t),box-shadow var(--t);
}
.faq .accordion-item:hover{border-color:rgba(23,120,107,.3);box-shadow:var(--sh2);}
.faq .accordion-header{margin:0;}
.faq .accordion-button{
  width:100%;
  padding:18px 20px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  background:#fff;
  border:0;
  box-shadow:none !important;
  display:flex;
  align-items:center;
  gap:12px;
  text-align:left;
}
.faq .accordion-button:not(.collapsed){color:var(--primary-dark);}
.faq .accordion-button::after{
  content:"";
  flex:0 0 auto;
  width:10px;
  height:10px;
  margin-left:auto;
  background-image:none;
  border-right:2px solid var(--primary);
  border-bottom:2px solid var(--primary);
  transform:rotate(45deg);
  transition:transform var(--t);
}
.faq .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);}
.faq .accordion-body{
  padding:0 20px 20px;
  color:var(--ink-2);
  font-size:15px;
  line-height:1.8;
  border-top:1px solid var(--line);
  padding-top:16px;
  margin-top:0;
}

.step-inline{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
  margin-top:20px;
}
.step-inline .step{
  position:relative;
  padding:20px 18px 18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
}
.step-inline .step .wm{
  position:absolute;
  right:12px;
  top:6px;
  font-size:44px;
  font-weight:700;
  color:rgba(23,120,107,.08);
  line-height:1;
}
.step-inline .step h4{font-size:16px;margin-bottom:8px;}
.step-inline .step p{font-size:14px;margin:0;color:var(--ink-2);}

/* ---------- 联系卡 ---------- */
.contact-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:30px;
  box-shadow:var(--sh1);
}
.contact-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
  margin-bottom:28px;
}
.contact-item{
  display:flex;
  gap:14px;
  padding:18px;
  background:var(--primary-soft);
  border-radius:var(--r-md);
}
.contact-item i{
  color:var(--primary);
  font-size:18px;
  margin-top:3px;
}
.contact-item h4{font-size:15px;margin-bottom:4px;}
.contact-item p{font-size:14px;margin:0;color:var(--ink-2);word-break:break-all;}

.form-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
}
.form-field{display:flex;flex-direction:column;gap:6px;}
.form-field.full{grid-column:1 / -1;}
.form-field label{font-size:13px;color:var(--ink-2);}
.form-field input,
.form-field textarea{
  width:100%;
  min-height:46px;
  padding:10px 14px;
  font-size:15px;
  color:var(--ink);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  font-family:inherit;
  transition:border-color var(--t),box-shadow var(--t);
}
.form-field textarea{min-height:110px;resize:vertical;line-height:1.7;}
.form-field input:focus,
.form-field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 2px rgba(23,120,107,.22);
}
.form-field input::placeholder,
.form-field textarea::placeholder{color:var(--muted);}
.form-tip{font-size:13px;color:var(--muted);margin:14px 0 0;}
.form-actions{margin-top:20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  margin-top:0;
  padding:72px 0;
  color:#fff;
  background-image:linear-gradient(120deg,rgba(14,43,39,.94) 0%,rgba(20,69,61,.93) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:var(--primary);
  opacity:.5;
}
.cta-inner{
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:32px;
  align-items:center;
}
.cta-inner h2{color:#fff;font-size:clamp(24px,3vw,32px);margin-bottom:12px;}
.cta-inner p{color:rgba(255,255,255,.76);margin:0;font-size:15.5px;max-width:600px;}
.cta-actions{display:flex;gap:14px;justify-content:flex-end;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:linear-gradient(160deg,var(--deep) 0%,var(--deep-2) 100%);
  color:rgba(255,255,255,.72);
  padding:64px 0 26px;
  font-size:14.5px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:36px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-brand .brand-mark{background:var(--primary);}
.footer-about{color:rgba(255,255,255,.68);font-size:14px;line-height:1.8;max-width:340px;}
.footer-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.footer-badges span{
  padding:4px 12px;
  border-radius:999px;
  background:rgba(255,255,255,.1);
  color:rgba(255,255,255,.82);
  font-size:12.5px;
}
.footer-title{
  font-size:15px;
  color:#fff;
  margin-bottom:16px;
  font-weight:600;
}
.footer-list li + li{margin-top:10px;}
.footer-list a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-list a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  margin-bottom:12px;
  color:rgba(255,255,255,.72);
  font-size:14px;
}
.footer-contact i{color:var(--primary);margin-top:4px;font-size:14px;}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:13px;
  color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (min-width:992px){
  .nav-menu.collapse{display:flex !important;height:auto !important;visibility:visible !important;}
}
@media (max-width:1199.98px){
  .page-hero-grid{grid-template-columns:minmax(0,1fr) 300px;gap:28px;}
  .toc-card{top:88px;}
}
@media (max-width:991.98px){
  .nav-inner{height:56px;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-menu{
    display:block;
    flex:initial;
    width:100%;
    padding:14px 0 18px;
    margin-top:8px;
    border-top:1px solid var(--line);
  }
  .nav-links{flex-direction:column;align-items:stretch;gap:4px;}
  .nav-link{display:block;padding:11px 14px;border-radius:var(--r-sm);font-size:15px;}
  .nav-actions{flex-direction:column;align-items:stretch;gap:10px;margin-top:12px;}
  .nav-actions .icon-btn{width:100%;border-radius:var(--r-btn);height:44px;}
  .btn-sm-nav{width:100%;}
  .nav-inner{flex-wrap:wrap;}
  .page-hero-grid{grid-template-columns:1fr;gap:24px;align-items:start;}
  .anchor-bar{width:100%;}
  .figure-card{grid-template-columns:1fr;}
  .step-inline{grid-template-columns:repeat(2,minmax(0,1fr));}
  .contact-grid{grid-template-columns:1fr;}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .toc-card{position:static;margin-bottom:28px;}
}
@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px;}
  .page-hero{padding:12px 0 32px;}
  .page-hero h1{margin:14px 0 12px;}
  .support-body{padding:44px 0 52px;}
  .group{padding-bottom:32px;margin-bottom:32px;}
  .step-inline{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .contact-card{padding:22px;}
  .cta-band{padding:52px 0;}
  .site-footer{padding:48px 0 22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:575.98px){
  .brand-text{font-size:15.5px;}
  .anchor-pill{font-size:13px;padding:6px 12px;}
  .btn-main, .btn-ghost{width:100%;}
  .form-actions .btn-main{width:100%;}
  .figure-card{padding:16px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}