/* roulang page: index */
:root{
  --brand-900:#0C3742;
  --brand-700:#16596B;
  --brand-500:#2F8AA0;
  --brand-050:#EAF3F5;
  --accent:#D2782F;
  --accent-h:#B4631F;
  --ink-900:#0F1E24;
  --ink-700:#33474E;
  --ink-500:#6B7F86;
  --line:#DFE8EB;
  --bg:#F5F8F9;
  --surface:#FFFFFF;
  --success:#2E8B6B;
  --error:#C4453A;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(12,55,66,.05);
  --sh-2:0 10px 30px -12px rgba(12,55,66,.18);
  --sh-3:0 18px 40px -16px rgba(12,55,66,.26);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;

  --bs-primary:#16596B;
  --bs-primary-rgb:22,89,107;
  --bs-body-color:#33474E;
  --bs-body-bg:#FFFFFF;
  --bs-border-color:#DFE8EB;
  --bs-link-color:#16596B;
  --bs-link-hover-color:#0C3742;
  --bs-font-sans-serif:var(--font-sans);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.9;
  color:var(--ink-700);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--brand-900);}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink-900);font-weight:600;letter-spacing:.01em;line-height:1.4;margin:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;}

.container,.container-sm,.container-md,.container-lg,.container-xl{
  max-width:1200px;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1400px){.container,.container-lg,.container-xl{max-width:1280px;}}
@media (max-width:767.98px){.container,.container-sm,.container-md,.container-lg,.container-xl{padding-left:16px;padding-right:16px;}}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--brand-900);
  color:rgba(255,255,255,.8);
  font-size:13px;
  line-height:1.6;
}
.topbar-inner{
  min-height:38px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:6px;
  padding-bottom:6px;
}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-domain{
  color:#fff;
  font-weight:600;
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}
.topbar-tip{
  color:rgba(255,255,255,.72);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.topbar-right{display:flex;align-items:center;gap:18px;flex-shrink:0;}
.topbar-phone{color:rgba(255,255,255,.86);font-variant-numeric:tabular-nums;}
.topbar-phone i{margin-right:6px;color:var(--brand-500);}
.topbar-link{color:rgba(255,255,255,.78);font-size:13px;}
.topbar-link:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
@media (max-width:767.98px){
  .topbar-tip{display:none;}
  .topbar-right .topbar-phone{display:none;}
}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.scrolled{box-shadow:var(--sh-2);}
.mainnav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height var(--t);
}
.site-header.scrolled .mainnav{height:64px;}
.logo{display:flex;align-items:center;gap:11px;color:var(--ink-900);flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--brand-050);
  color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
  transition:background var(--t),color var(--t);
}
.logo-mark svg{width:22px;height:22px;}
.logo:hover .logo-mark{background:var(--brand-700);color:#fff;}
.logo-text{
  font-family:var(--font-serif);
  font-size:19px;
  font-weight:600;
  letter-spacing:.02em;
  white-space:nowrap;
}
.logo-text em{
  font-style:normal;
  font-family:var(--font-sans);
  font-size:12px;
  color:var(--ink-500);
  margin-left:8px;
  letter-spacing:.06em;
  vertical-align:2px;
}
.nav-list{display:flex;align-items:center;gap:6px;}
.nav-list a{
  display:block;
  padding:8px 14px;
  font-size:15px;
  color:var(--ink-700);
  border-radius:8px;
  position:relative;
}
.nav-list a:hover{color:var(--brand-700);background:var(--brand-050);}
.nav-list a.active{color:var(--brand-700);font-weight:600;}
.nav-list a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:-2px;
  height:2px;border-radius:2px;
  background:var(--brand-700);
}
.nav-side{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:#fff;
  color:var(--ink-700);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:var(--t);
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-050);}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:5px;}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink-900);border-radius:2px;transition:var(--t);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

@media (max-width:991.98px){
  .nav-list{display:none;}
  .nav-side .btn-main{display:none;}
  .nav-toggle{display:flex;}
}
.nav-drawer{
  position:fixed;
  top:0;right:0;
  width:84vw;max-width:360px;height:100%;
  background:#fff;
  z-index:1055;
  transform:translateX(102%);
  transition:transform 260ms cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;
  box-shadow:-16px 0 40px -20px rgba(12,55,66,.4);
}
.nav-drawer.open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;border-bottom:1px solid var(--line);
}
.drawer-head strong{font-family:var(--font-serif);font-size:17px;color:var(--ink-900);}
.drawer-close{background:none;border:0;font-size:20px;color:var(--ink-500);cursor:pointer;padding:6px;}
.drawer-nav{padding:8px 0;flex:1;overflow-y:auto;}
.drawer-nav a{
  display:block;
  height:52px;line-height:52px;
  padding:0 20px;
  font-size:16px;color:var(--ink-700);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand-700);font-weight:600;background:var(--brand-050);}
.drawer-cta{padding:16px 20px 24px;border-top:1px solid var(--line);}
.drawer-cta .btn-main{width:100%;justify-content:center;}
.nav-mask{
  position:fixed;inset:0;background:rgba(12,55,66,.42);
  z-index:1050;opacity:0;visibility:hidden;transition:var(--t);
}
.nav-mask.open{opacity:1;visibility:visible;}
@media (min-width:992px){.nav-drawer,.nav-mask{display:none;}}

/* ============ 按钮 ============ */
.btn-main,.btn-ghost,.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  font-size:15px;font-weight:600;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:var(--t);
  white-space:nowrap;
}
.btn-main{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}
.btn-main:hover{background:var(--brand-900);border-color:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-main:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--brand-700);color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-900);border-color:var(--brand-900);}
.btn-accent{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-h);border-color:var(--accent-h);color:#fff;transform:translateY(-1px);}
.btn-main:focus-visible,.btn-ghost:focus-visible,.btn-accent:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;}
.btn-main[disabled],.btn-main.is-disabled,.btn-accent[disabled]{opacity:.55;pointer-events:none;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.bg-soft{background:var(--bg);}
.bg-mint{background:var(--brand-050);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;
  color:var(--brand-700);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand-500);border-radius:2px;}
.section-title{font-size:34px;line-height:1.35;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.section-desc{margin-top:14px;font-size:15.5px;color:var(--ink-500);max-width:640px;}
.link-more{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:600;color:var(--brand-700);
  white-space:nowrap;
}
.link-more i{transition:transform var(--t);}
.link-more:hover i{transform:translateX(4px);}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;
  border-radius:999px;
  background:var(--brand-050);
  color:var(--brand-700);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
}

/* ============ Hero ============ */
.hero{
  padding:76px 0 84px;
  background:linear-gradient(180deg,#FFFFFF 0%,#FBFDFD 100%);
  overflow:hidden;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-700);
  font-size:13px;font-weight:600;margin-bottom:20px;
}
.hero-badge i{font-size:12px;}
.hero h1{
  font-size:44px;
  line-height:1.32;
  margin-bottom:20px;
}
.hero-sub{
  font-size:16.5px;
  color:var(--ink-700);
  max-width:620px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-marks{display:flex;flex-wrap:wrap;gap:12px 28px;}
.hero-marks li{
  display:flex;align-items:flex-start;gap:9px;
  font-size:14px;color:var(--ink-500);
  line-height:1.6;
}
.hero-marks i{color:var(--brand-500);font-size:14px;margin-top:3px;}
.hero-marks strong{color:var(--ink-900);font-weight:600;}
.hero-figure{
  position:relative;
  border-radius:16px;
  overflow:hidden;
  aspect-ratio:16/9;
  box-shadow:var(--sh-2);
  background:var(--brand-050);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,55,66,.05) 0%,rgba(12,55,66,.30) 100%);
}
.hero-float{
  position:absolute;
  left:20px;bottom:20px;z-index:2;
  background:rgba(255,255,255,.96);
  border-radius:12px;
  padding:14px 18px;
  box-shadow:var(--sh-2);
  display:flex;align-items:center;gap:12px;
}
.hero-float i{color:var(--brand-700);font-size:18px;}
.hero-float b{
  display:block;font-family:var(--font-serif);
  font-size:20px;color:var(--brand-900);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-float span{font-size:12.5px;color:var(--ink-500);}

/* ============ 服务卡 ============ */
.svc-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  height:100%;
  box-shadow:var(--sh-1);
  transition:var(--t);
  display:flex;flex-direction:column;
}
.svc-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-3);
  border-color:rgba(22,89,107,.4);
}
.svc-card-lg{padding:0;overflow:hidden;}
.svc-card-lg .svc-media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-050);}
.svc-card-lg .svc-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.2,.7,.3,1);}
.svc-card-lg:hover .svc-media img{transform:scale(1.04);}
.svc-card-lg .svc-body{padding:26px 28px 28px;}
.svc-index{
  font-family:var(--font-serif);
  font-size:15px;
  color:var(--accent);
  letter-spacing:.1em;
  font-variant-numeric:tabular-nums;
  margin-bottom:10px;
}
.svc-icon{
  width:44px;height:44px;border-radius:12px;
  background:var(--brand-050);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;margin-bottom:16px;
  flex-shrink:0;
}
.svc-card h3{font-size:20px;margin-bottom:10px;}
.svc-card p{font-size:14.5px;color:var(--ink-500);line-height:1.75;}
.svc-stack{display:flex;flex-direction:column;gap:24px;height:100%;}
.svc-card-sm{flex-direction:row;align-items:flex-start;gap:18px;}
.svc-card-sm .svc-icon{margin-bottom:0;width:42px;height:42px;}
.svc-card-sm .svc-txt{flex:1;min-width:0;}
.svc-card-sm h3{font-size:18px;margin-bottom:6px;}
.svc-arrow{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:16px;font-size:14px;font-weight:600;color:var(--brand-700);
}
.svc-arrow i{transition:transform var(--t);font-size:12px;}
.svc-card:hover .svc-arrow i{transform:translateX(4px);}

/* ============ 数据带 ============ */
.stats-band{background:var(--brand-050);padding:52px 0;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-item{padding:6px 28px;border-left:1px solid rgba(22,89,107,.18);}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{
  font-family:var(--font-serif);
  font-size:40px;line-height:1.15;
  color:var(--brand-900);
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
}
.stat-num small{font-size:18px;margin-left:3px;color:var(--brand-700);}
.stat-label{margin-top:6px;font-size:14px;color:var(--ink-500);}
@media (max-width:991.98px){
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .stat-item:nth-child(odd){border-left:0;padding-left:0;}
}
@media (max-width:575.98px){
  .stat-num{font-size:32px;}
}

/* ============ 案例 ============ */
.case-row{display:grid;grid-template-columns:1.35fr 1fr;gap:32px;align-items:center;margin-bottom:44px;}
.case-row.reverse{grid-template-columns:1fr 1.35fr;}
.case-row.reverse .case-media{order:2;}
.case-row.reverse .case-body{order:1;}
.case-media{
  border-radius:var(--r-card);
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--brand-050);
  box-shadow:var(--sh-1);
}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform 450ms cubic-bezier(.2,.7,.3,1);}
.case-row:hover .case-media img{transform:scale(1.03);}
.case-body h3{font-size:23px;margin:14px 0 12px;}
.case-body p{font-size:15px;color:var(--ink-500);margin-bottom:18px;}
.case-link{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--brand-700);}
.case-link i{transition:transform var(--t);font-size:12px;}
.case-link:hover i{transform:translateX(4px);}
.case-mini{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.case-mini .case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:var(--t);height:100%;
}
.case-mini .case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(22,89,107,.4);}
.case-mini .case-card .case-media{border-radius:0;box-shadow:none;aspect-ratio:16/9;}
.case-mini .case-card .case-inner{padding:22px 24px 24px;}
.case-mini h3{font-size:18px;margin:12px 0 8px;}
.case-mini p{font-size:14px;color:var(--ink-500);}
@media (max-width:991.98px){
  .case-row,.case-row.reverse{grid-template-columns:1fr;gap:22px;}
  .case-row.reverse .case-media{order:1;}
  .case-row.reverse .case-body{order:2;}
}
@media (max-width:575.98px){
  .case-mini{grid-template-columns:1fr;}
}

/* ============ 流程 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow-step{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px 28px;
  box-shadow:var(--sh-1);
  transition:var(--t);
}
.flow-step:hover{box-shadow:var(--sh-2);border-color:rgba(22,89,107,.35);}
.flow-step::after{
  content:"";position:absolute;top:48px;left:100%;width:24px;height:2px;
  background:rgba(47,138,160,.35);
}
.flow-step:last-child::after{display:none;}
.flow-num{
  width:42px;height:42px;border-radius:12px;
  background:var(--brand-050);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:17px;font-weight:600;
  margin-bottom:16px;font-variant-numeric:tabular-nums;
}
.flow-step h3{font-size:18px;margin-bottom:8px;}
.flow-step p{font-size:14px;color:var(--ink-500);line-height:1.75;}
@media (max-width:991.98px){
  .flow{grid-template-columns:1fr;gap:18px;}
  .flow-step::after{
    top:100%;left:44px;width:2px;height:18px;
  }
  .flow-step{padding-left:26px;}
}
@media (min-width:992px){
  .flow-vertical-line{display:none;}
}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.news-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:var(--t);
  display:flex;flex-direction:column;
  height:100%;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(22,89,107,.4);}
.news-thumb{
  aspect-ratio:16/9;
  background:var(--brand-050) center/cover no-repeat;
}
.news-inner{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.news-inner h3{font-size:18px;line-height:1.55;margin:12px 0 10px;}
.news-inner h3 a{color:var(--ink-900);}
.news-inner h3 a:hover{color:var(--brand-700);}
.news-card h3{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-summary{
  font-size:14px;color:var(--ink-500);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:16px;
}
.news-meta{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-500);
}
.news-meta i{margin-right:6px;color:var(--brand-500);}
.news-meta span{display:inline-flex;align-items:center;}
.news-empty{
  grid-column:1/-1;
  min-height:220px;
  background:#fff;
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;color:var(--ink-500);gap:12px;
  padding:32px;
}
.news-empty i{font-size:44px;color:var(--brand-500);opacity:.6;}
.news-empty p{font-size:15px;}
.news-empty a{font-size:14.5px;font-weight:600;}
@media (max-width:991.98px){
  .news-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:575.98px){
  .news-grid{grid-template-columns:1fr;}
  .news-card{flex-direction:row;}
  .news-thumb{width:40%;aspect-ratio:auto;min-height:120px;flex-shrink:0;}
  .news-inner{padding:16px 18px;}
  .news-inner h3{font-size:16px;margin:8px 0 6px;}
  .news-summary{-webkit-line-clamp:2;font-size:13px;}
  .news-meta{border-top:0;padding-top:8px;}
  .news-meta span:last-child{display:none;}
}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;}
.faq-intro h2{font-size:32px;margin-bottom:16px;}
.faq-intro p{font-size:15px;color:var(--ink-500);margin-bottom:22px;}
.faq-side-card{
  background:var(--brand-050);
  border-radius:var(--r-card);
  padding:24px;
}
.faq-side-card h3{font-size:17px;margin-bottom:8px;}
.faq-side-card p{font-size:14px;color:var(--ink-700);margin-bottom:14px;}
.accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;}
.accordion-item:first-of-type{border-top:1px solid var(--line);border-radius:0;}
.accordion-button{
  background:transparent;
  box-shadow:none;
  padding:22px 56px 22px 0;
  font-size:17px;font-weight:600;color:var(--ink-900);
  font-family:var(--font-sans);
  line-height:1.6;
}
.accordion-button:not(.collapsed){color:var(--brand-700);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-button::after{
  content:"";
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid var(--line);
  background-color:transparent;
  background-image:linear-gradient(currentColor,currentColor),linear-gradient(currentColor,currentColor);
  background-size:12px 2px,2px 12px;
  background-position:center center,center center;
  background-repeat:no-repeat;
  color:var(--brand-700);
  transition:transform var(--t),background-color var(--t);
  position:absolute;right:0;top:50%;transform:translateY(-50%);
  margin:0;
}
.accordion-button:not(.collapsed)::after{
  transform:translateY(-50%) rotate(45deg);
  color:#fff;
  background-color:var(--brand-700);
  border-color:var(--brand-700);
}
.accordion-body{
  padding:0 56px 24px 0;
  font-size:15px;line-height:1.85;color:var(--ink-700);
}
@media (max-width:991.98px){
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
}

/* ============ CTA 联系区 ============ */
.cta-band{background:var(--brand-900);padding:88px 0;color:#fff;}
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.cta-band h2{color:#fff;font-size:32px;margin-bottom:16px;}
.cta-band p.lead{color:rgba(255,255,255,.76);font-size:15.5px;margin-bottom:30px;}
.cta-list li{
  display:flex;align-items:flex-start;gap:12px;
  padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.12);
  font-size:14.5px;color:rgba(255,255,255,.86);
}
.cta-list li:last-child{border-bottom:0;}
.cta-list i{color:var(--brand-500);margin-top:4px;width:16px;}
.cta-list b{color:#fff;font-weight:600;margin-right:6px;}
.form-card{
  background:#fff;
  border-radius:16px;
  padding:32px;
  box-shadow:0 24px 60px -24px rgba(0,0,0,.45);
}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .form-tip{font-size:13.5px;color:var(--ink-500);margin-bottom:22px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:8px;}
.field .req{color:var(--error);margin-left:4px;}
.form-control,.form-select{
  width:100%;
  height:48px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  padding:0 14px;
  font-size:15px;
  color:var(--ink-900);
  background:#fff;
  transition:var(--t);
  font-family:inherit;
}
textarea.form-control{height:auto;min-height:110px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-control:focus,.form-select:focus{
  outline:none;
  border-color:var(--brand-700);
  box-shadow:0 0 0 3px var(--brand-050);
}
.form-control::placeholder{color:#9AAAB0;}
.form-note{font-size:13px;color:var(--ink-500);margin-top:12px;}
.form-msg{
  display:none;
  margin-top:14px;
  font-size:14px;
  color:var(--success);
  background:rgba(46,139,107,.08);
  border-radius:10px;
  padding:12px 14px;
}
.form-msg.show{display:block;}
@media (max-width:991.98px){
  .cta-grid{grid-template-columns:1fr;gap:36px;}
}
@media (max-width:575.98px){
  .form-row{grid-template-columns:1fr;gap:0;}
  .form-card{padding:24px 20px;}
  .form-card .btn-accent{width:100%;}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.8);padding-top:72px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-mark{background:rgba(255,255,255,.1);color:#fff;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px;}
.footer-contact{margin-top:18px;}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;padding:5px 0;color:rgba(255,255,255,.72);font-size:13.5px;}
.footer-contact i{color:var(--brand-500);margin-top:5px;width:14px;}
.site-footer h4{
  color:#fff;font-family:var(--font-sans);
  font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em;
}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:rgba(255,255,255,.78);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-service li{display:flex;gap:10px;font-size:13.5px;color:rgba(255,255,255,.7);padding:5px 0;line-height:1.75;}
.footer-service i{color:var(--brand-500);margin-top:5px;width:14px;}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:#fff;}
@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;}
  .site-footer{padding-top:52px;}
}

/* ============ 响应式版式 ============ */
@media (max-width:1199.98px){
  .section{padding:80px 0;}
  .section-title{font-size:30px;}
  .hero h1{font-size:38px;}
}
@media (max-width:991.98px){
  .section{padding:68px 0;}
  .section-tight{padding:56px 0;}
  .hero{padding:56px 0 64px;}
  .hero h1{font-size:33px;}
  .hero-figure{margin-top:8px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px;}
}
@media (max-width:575.98px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .hero{padding:44px 0 52px;}
  .hero h1{font-size:27px;}
  .hero-sub{font-size:15.5px;}
  .section-title{font-size:25px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{flex:1 1 100%;}
  .cta-band{padding:60px 0;}
  .cta-band h2{font-size:25px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: article */
:root{
  --brand-900:#0C3742;
  --brand-700:#16596B;
  --brand-500:#2F8AA0;
  --brand-050:#EAF3F5;
  --accent:#D2782F;
  --accent-hover:#B4631F;
  --ink-900:#0F1E24;
  --ink-700:#33474E;
  --ink-500:#6B7F86;
  --line:#DFE8EB;
  --bg:#F5F8F9;
  --surface:#FFFFFF;
  --success:#2E8B6B;
  --error:#C4453A;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(12,55,66,.05);
  --sh-2:0 10px 30px -12px rgba(12,55,66,.18);
  --sh-3:0 18px 40px -16px rgba(12,55,66,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-700);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5{font-family:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;color:var(--ink-900);font-weight:600;letter-spacing:.01em;line-height:1.38;margin:0}
h1{font-size:34px}
h2{font-size:28px}
h3{font-size:19px}
p{margin:0 0 1.1em}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1400px){.container{max-width:1280px}}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.section--tint{background:var(--bg)}
.section--brand{background:var(--brand-050)}
.section--dark{background:var(--brand-900);color:rgba(255,255,255,.82)}
@media (max-width:1199px){.section{padding:80px 0}}
@media (max-width:991px){.section{padding:72px 0}.section--tight{padding:52px 0}}
@media (max-width:767px){.section{padding:56px 0}.container{padding-left:16px;padding-right:16px}h1{font-size:26px}h2{font-size:22px}}

/* 顶部信息条 */
.topbar{background:var(--brand-900);color:rgba(255,255,255,.8);font-size:13.5px;line-height:1.6}
.topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.topbar-left,.topbar-right{display:flex;align-items:center;gap:14px}
.topbar-domain{font-weight:600;color:#fff;letter-spacing:.02em}
.topbar-tip{position:relative;padding-left:14px}
.topbar-tip::before{content:"";position:absolute;left:0;top:50%;width:1px;height:12px;transform:translateY(-50%);background:rgba(255,255,255,.25)}
.topbar-right a{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.85)}
.topbar-right a:hover{color:#fff}
.topbar-right i{font-size:12px}
@media (max-width:991px){.topbar-tip{display:none}}
@media (max-width:767px){.topbar-inner{min-height:34px;font-size:12.5px}.topbar-domain{display:none}.topbar-right a:last-child{display:none}}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s var(--ease),height .25s var(--ease)}
.site-header.is-stuck{box-shadow:var(--sh-2)}
.header-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;transition:height .25s var(--ease)}
.site-header.is-stuck .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--brand-700);color:#fff;display:inline-flex;align-items:center;justify-content:center}
.logo-mark svg{width:22px;height:22px}
.logo-text{font-family:"Noto Serif SC",serif;font-size:19px;font-weight:600;color:var(--ink-900);letter-spacing:.02em}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-list a{position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;font-size:15.5px;color:var(--ink-700)}
.site-header.is-stuck .nav-list a{height:64px}
.nav-list a::after{content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;background:var(--brand-700);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);border-radius:2px}
.nav-list a:hover{color:var(--brand-700)}
.nav-list a:hover::after,.nav-list a.active::after{transform:scaleX(1)}
.nav-list a.active{color:var(--brand-700);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px}
.icon-btn{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink-700);display:inline-flex;align-items:center;justify-content:center;transition:all .22s var(--ease)}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-050)}
.nav-toggle{display:none}
.search-panel{max-height:0;overflow:hidden;border-top:1px solid transparent;transition:max-height .28s var(--ease),border-color .28s var(--ease)}
.site-header.search-open .search-panel{max-height:120px;border-top-color:var(--line)}
.search-form{display:flex;gap:12px;padding:16px 0}
.search-form input{flex:1;height:46px;border:1px solid var(--line);border-radius:var(--r-input);padding:0 16px;font-size:15px;color:var(--ink-900);background:#fff}
.search-form input::placeholder{color:var(--ink-500)}
.search-form input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-050)}
@media (max-width:991px){
  .nav-list,.header-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
}
.drawer{position:fixed;inset:0;z-index:1080;pointer-events:none}
.drawer-panel{position:absolute;top:0;right:0;height:100%;width:84vw;max-width:360px;background:#fff;transform:translateX(102%);transition:transform .3s var(--ease);display:flex;flex-direction:column;box-shadow:var(--sh-3)}
.drawer-mask{position:absolute;inset:0;background:rgba(12,55,66,.45);opacity:0;transition:opacity .3s var(--ease)}
.drawer.is-open{pointer-events:auto}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer.is-open .drawer-mask{opacity:1}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink-700)}
.drawer-nav{flex:1;overflow-y:auto}
.drawer-nav a{display:flex;align-items:center;height:52px;padding:0 20px;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink-700)}
.drawer-nav a.active{color:var(--brand-700);font-weight:600;background:var(--brand-050)}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15.5px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:all .22s var(--ease);white-space:nowrap}
.btn i{font-size:14px}
.btn-primary{background:var(--brand-700);color:#fff}
.btn-primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-700)}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-900)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px)}
.btn-sm{height:42px;padding:0 18px;font-size:14.5px}
.btn[disabled],.btn.disabled{background:var(--line);color:var(--ink-500);border-color:var(--line);cursor:not-allowed;transform:none}
.btn-block{width:100%}

/* 徽章与面包屑 */
.badge-soft{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 14px;border-radius:999px;background:var(--brand-050);color:var(--brand-700);font-size:13px;font-weight:600;letter-spacing:.02em}
.breadcrumb-nav{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);flex-wrap:wrap;padding:20px 0}
.breadcrumb-nav a{color:var(--ink-500)}
.breadcrumb-nav a:hover{color:var(--brand-700)}
.breadcrumb-nav .sep{color:#B9C8CD}
.breadcrumb-nav .current{color:var(--ink-700);max-width:min(52ch,100%);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.page-head{border-bottom:1px solid var(--line);background:#fff}

/* 文章头 */
.article-hero{background:var(--brand-050);padding:8px 0 46px}
.article-hero h1{max-width:860px;margin:16px 0 0}
.meta-row{display:flex;align-items:center;gap:22px;flex-wrap:wrap;border-top:1px solid #CFE0E4;border-bottom:1px solid #CFE0E4;padding:12px 0;margin-top:24px;font-size:13.5px;color:var(--ink-500)}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--brand-500)}
.share-btn{margin-left:auto;display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 14px;border-radius:999px;border:1px solid #CFE0E4;background:#fff;color:var(--brand-700);font-size:13.5px;font-weight:600;cursor:pointer;transition:all .22s var(--ease)}
.share-btn:hover{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}
@media (max-width:767px){.article-hero h1{margin-top:14px}.meta-row{gap:14px;font-size:12.5px}.share-btn{margin-left:0}}

/* 封面 */
.cover-wrap{padding:40px 0 0;background:#fff}
.cover-frame{border-radius:14px;overflow:hidden;box-shadow:var(--sh-2)}
.cover-frame img{width:100%;aspect-ratio:16/9;object-fit:cover}
@media (max-width:767px){.cover-wrap{padding-top:26px}.cover-frame{border-radius:12px}}

/* 正文区 */
.article-main{padding:56px 0 80px;background:#fff}
.article-body{font-size:16.5px;line-height:1.9;color:var(--ink-700);max-width:820px}
.article-body h2{font-size:24px;margin:44px 0 18px;padding-left:14px;border-left:4px solid var(--brand-700);line-height:1.5}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-size:20px;margin:32px 0 14px}
.article-body h4{font-size:17px;margin:26px 0 12px}
.article-body p{margin:0 0 1.2em}
.article-body strong{color:var(--ink-900)}
.article-body a{color:var(--brand-700);border-bottom:1px solid rgba(22,89,107,.35)}
.article-body a:hover{color:var(--brand-900);border-bottom-color:var(--brand-900)}
.article-body ul,.article-body ol{padding-left:1.5em;margin:0 0 1.3em}
.article-body ul li{list-style:disc}
.article-body ol li{list-style:decimal}
.article-body li{margin-bottom:.5em}
.article-body li::marker{color:var(--brand-700)}
.article-body blockquote{margin:0 0 1.4em;padding:18px 22px;background:var(--brand-050);border-left:3px solid var(--brand-700);border-radius:0 10px 10px 0;color:var(--ink-700)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:26px auto}
.article-body figure{margin:26px 0}
.article-body figure img{margin:0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-500);margin-top:10px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:0 0 1.4em}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-body thead th{background:var(--brand-050);color:var(--brand-900);font-weight:600}
.article-body tbody tr:nth-child(even){background:var(--bg)}
.article-body code{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:14px}
@media (max-width:767px){
  .article-main{padding:36px 0 56px}
  .article-body{font-size:16px}
  .article-body h2{font-size:21px;margin-top:34px}
  .article-body h3{font-size:18px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}
.empty-state{background:var(--bg);border:1px solid var(--line);border-radius:var(--r-card);min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;padding:32px 24px}
.empty-state i{font-size:44px;color:var(--brand-500)}
.empty-state p{margin:0;color:var(--ink-700)}
.empty-state a{color:var(--brand-700);font-weight:600;border-bottom:1px solid rgba(22,89,107,.35)}

/* 标签与文末导航 */
.article-tags{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:40px 0 0;padding-top:24px;border-top:1px solid var(--line)}
.article-tags span.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:var(--bg);border:1px solid var(--line);font-size:13px;color:var(--ink-700)}
.article-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.nav-card{display:block;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;padding:18px 20px;box-shadow:var(--sh-1);transition:all .22s var(--ease)}
.nav-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(22,89,107,.4)}
.nav-card small{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:8px}
.nav-card strong{display:block;font-size:15.5px;color:var(--ink-900);font-weight:600;line-height:1.6}
.nav-card.next{text-align:right}
.nav-card.next small{justify-content:flex-end}
.back-row{margin-top:24px}
@media (max-width:767px){.article-nav{grid-template-columns:1fr}.nav-card.next{text-align:left}.nav-card.next small{justify-content:flex-start}}

/* 侧栏 */
.side-stack{display:flex;flex-direction:column;gap:20px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:22px}
.side-card h3{font-size:16.5px;margin-bottom:14px;display:flex;align-items:center;gap:9px}
.side-card h3 i{color:var(--brand-500);font-size:15px}
.toc-list li+li{margin-top:2px}
.toc-list a{display:flex;align-items:flex-start;gap:10px;padding:9px 0;font-size:14.5px;color:var(--ink-700);border-bottom:1px dashed var(--line)}
.toc-list li:last-child a{border-bottom:0}
.toc-list a:hover{color:var(--brand-700)}
.toc-list a i{font-size:11px;color:var(--brand-500);margin-top:6px}
.hot-list li+li{border-top:1px solid var(--line)}
.hot-list a{display:flex;gap:12px;padding:12px 0;font-size:14.5px;line-height:1.65;color:var(--ink-700)}
.hot-list a:hover{color:var(--brand-700)}
.hot-list .num{flex-shrink:0;width:22px;height:22px;border-radius:6px;background:var(--brand-050);color:var(--brand-700);font-size:12.5px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;margin-top:3px}
.hot-list a:hover .num{background:var(--brand-700);color:#fff}
.side-cta{background:var(--brand-900);color:rgba(255,255,255,.82);border-color:var(--brand-900)}
.side-cta h3{color:#fff}
.side-cta h3 i{color:var(--accent)}
.side-cta p{font-size:14.5px;line-height:1.8;margin-bottom:18px}
.side-cta ul{margin-bottom:18px}
.side-cta li{display:flex;gap:9px;font-size:14px;padding:6px 0;color:rgba(255,255,255,.8)}
.side-cta li i{color:var(--brand-500);margin-top:6px;font-size:12px}
@media (min-width:992px){.side-sticky{position:sticky;top:110px}}
@media (max-width:991px){.side-stack{margin-top:8px}}

/* 相关推荐 */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;transition:all .22s var(--ease)}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(22,89,107,.4)}
.post-thumb{overflow:hidden;aspect-ratio:16/9}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-body h3{font-size:17.5px;line-height:1.55}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body p{font-size:14.5px;color:var(--ink-500);margin:0}
.post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-500);padding-top:6px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-700)}
.link-arrow i{transition:transform .22s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:38px}
.section-head p{margin:10px 0 0;font-size:15.5px;color:var(--ink-500);max-width:62ch}
@media (max-width:991px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:767px){.post-grid{grid-template-columns:1fr}}

/* 转化区 */
.cta-band{background:var(--brand-900);color:rgba(255,255,255,.82);padding:80px 0}
.cta-band h2{color:#fff}
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.cta-info p{font-size:15.5px;line-height:1.9}
.cta-info ul{margin:22px 0 0}
.cta-info li{display:flex;gap:11px;font-size:15px;padding:8px 0;color:rgba(255,255,255,.82)}
.cta-info li i{color:var(--accent);margin-top:7px;font-size:13px}
.form-card{background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-3);padding:30px}
.form-card h3{font-size:20px;margin-bottom:6px}
.form-card .form-note{font-size:13.5px;color:var(--ink-500);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:7px}
.field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:var(--r-input);background:#fff;color:var(--ink-900);font-size:15px;padding:0 14px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.field input{height:48px}
.field textarea{min-height:104px;padding:12px 14px;line-height:1.75;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#9DAFB5}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-050)}
.field .err{display:none;font-size:13px;color:var(--error);margin-top:6px}
.field.has-error input,.field.has-error textarea{border-color:var(--error)}
.field.has-error .err{display:block}
.form-msg{display:none;margin-top:14px;font-size:14px;color:var(--success);background:#EDF7F2;border:1px solid #C9E6DA;border-radius:10px;padding:11px 14px}
.form-msg.show{display:block}
@media (max-width:991px){.cta-grid{grid-template-columns:1fr;gap:32px}.cta-band{padding:60px 0}}
@media (max-width:767px){.form-card{padding:22px}.form-card .btn{width:100%}}

/* FAQ 组件备用样式 */
.accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
.accordion-button{background:transparent;box-shadow:none;padding:20px 44px 20px 0;font-size:17px;font-weight:600;color:var(--ink-900);font-family:"Noto Serif SC",serif}
.accordion-button:not(.collapsed){color:var(--brand-700);background:transparent;box-shadow:none}
.accordion-button:focus{box-shadow:none}
.accordion-button::after{display:none}
.accordion-body{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--ink-700)}

/* 页脚 */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.8);padding:72px 0 0;font-size:14.5px;line-height:1.85}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.site-footer .logo-text{color:#fff}
.site-footer .logo-mark{background:rgba(255,255,255,.1);color:#fff}
.footer-brand p{margin:18px 0 20px;color:rgba(255,255,255,.72)}
.footer-contact li,.footer-service li{display:flex;gap:10px;padding:6px 0;color:rgba(255,255,255,.78)}
.footer-contact i,.footer-service i{color:var(--brand-500);margin-top:7px;font-size:13px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px}
.footer-links li{padding:7px 0}
.footer-links a{color:rgba(255,255,255,.78)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.62)}
.footer-bottom a{color:rgba(255,255,255,.8);border-bottom:1px solid rgba(255,255,255,.3)}
.footer-bottom a:hover{color:#fff}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr}.site-footer{padding-top:52px}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --brand-900:#0C3742;
  --brand-700:#16596B;
  --brand-500:#2F8AA0;
  --brand-050:#EAF3F5;
  --accent:#D2782F;
  --accent-hover:#B4631F;
  --ink-900:#0F1E24;
  --ink-700:#33474E;
  --ink-500:#6B7F86;
  --line:#DFE8EB;
  --bg:#F5F8F9;
  --surface:#FFFFFF;
  --success:#2E8B6B;
  --error:#C4453A;
  --r-card:14px;
  --r-img:13px;
  --r-btn:10px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(12,55,66,.05);
  --sh-2:0 10px 30px -12px rgba(12,55,66,.18);
  --sh-3:0 18px 40px -16px rgba(12,55,66,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --bs-primary:#16596B;
  --bs-primary-rgb:22,89,107;
  --bs-secondary:#6B7F86;
  --bs-body-color:#33474E;
  --bs-body-bg:#FFFFFF;
  --bs-border-color:#DFE8EB;
  --bs-link-color:#16596B;
  --bs-link-hover-color:#0C3742;
  --bs-font-sans-serif:var(--font-sans);
  --bs-border-radius:14px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.9;
  color:var(--ink-700);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-family:var(--font-serif);
  color:var(--ink-900);
  font-weight:600;
  letter-spacing:.01em;
  margin:0;
}
h1{font-size:40px;line-height:1.35;}
h2{font-size:29px;line-height:1.45;}
h3{font-size:19px;line-height:1.55;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
a{color:var(--brand-700);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--brand-900);}
img{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;}
.container,.container-lg,.container-xl{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;}
@media (min-width:1400px){.container{max-width:1280px;}}
.num{font-variant-numeric:tabular-nums;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.bg-mist{background:var(--bg);}
.bg-pale{background:var(--brand-050);}
.sec-head{max-width:760px;margin-bottom:48px;}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--brand-700);
  background:var(--brand-050);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.sec-head p{font-size:16.5px;color:var(--ink-500);margin-top:14px;}
.sec-head h2{margin:0;}

/* ===== 顶部信息条 ===== */
.topbar{background:var(--brand-900);color:rgba(255,255,255,.82);font-size:13px;height:38px;display:flex;align-items:center;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-left .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none;}
.topbar-left .host{color:#fff;letter-spacing:.02em;}
.topbar-left .tip{color:rgba(255,255,255,.72);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:20px;flex:none;}
.topbar-right a{color:rgba(255,255,255,.85);}
.topbar-right a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.topbar-right .tel{color:#fff;font-weight:600;}

/* ===== 主导航 ===== */
.site-header{position:sticky;top:0;z-index:1040;}
.navbar-wrap{
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease),height .24s var(--ease);
  height:72px;display:flex;align-items:center;
}
.site-header.scrolled .navbar-wrap{height:64px;box-shadow:var(--sh-2);}
.nav-inner{display:flex;align-items:center;gap:28px;width:100%;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand-050);
  color:var(--brand-700);display:inline-flex;align-items:center;justify-content:center;flex:none;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.logo-mark svg{width:22px;height:22px;}
.logo:hover .logo-mark{background:var(--brand-700);color:#fff;}
.logo-text{font-family:var(--font-serif);font-size:19px;font-weight:600;color:var(--ink-900);letter-spacing:.02em;}
.nav-list{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-list a{
  position:relative;display:inline-flex;align-items:center;height:72px;padding:0 16px;
  font-size:15.5px;color:var(--ink-700);white-space:nowrap;
}
.nav-list a::after{
  content:"";position:absolute;left:16px;right:16px;bottom:18px;height:2px;border-radius:2px;
  background:var(--brand-700);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-list a:hover{color:var(--brand-900);}
.nav-list a:hover::after{transform:scaleX(1);}
.nav-list a.active{color:var(--brand-900);font-weight:600;}
.nav-list a.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--ink-900);align-items:center;justify-content:center;font-size:17px;
}
.nav-toggle:hover{border-color:var(--brand-500);color:var(--brand-700);}
.drawer-cta{display:none;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;border-radius:var(--r-btn);
  padding:14px 26px;border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-brand{background:var(--brand-700);color:#fff;box-shadow:var(--sh-1);}
.btn-brand:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-brand:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-900);border-color:var(--brand-900);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-light-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-light-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn:disabled,.btn.disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ===== 面包屑 ===== */
.crumb-bar{background:var(--bg);border-bottom:1px solid var(--line);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);padding:14px 0;margin:0;background:transparent;}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#B9C8CD;}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .current{color:var(--ink-900);font-weight:600;}

/* ===== 分类 Hero ===== */
.cat-hero{
  position:relative;overflow:hidden;background:var(--brand-050);
  min-height:360px;display:flex;align-items:center;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.28;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(234,243,245,.96) 0%,rgba(234,243,245,.90) 42%,rgba(234,243,245,.55) 100%);
}
.cat-hero .container{position:relative;z-index:2;padding-top:56px;padding-bottom:56px;}
.cat-hero-inner{max-width:760px;}
.badge-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(22,89,107,.10);color:var(--brand-700);
  border-radius:999px;padding:7px 16px;font-size:13.5px;font-weight:600;margin-bottom:20px;
}
.cat-hero h1{font-size:42px;line-height:1.3;margin-bottom:18px;}
.cat-hero .lead{font-size:17px;color:var(--ink-700);max-width:660px;margin-bottom:28px;}
.cat-hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-marks{display:flex;flex-wrap:wrap;gap:10px 34px;margin-top:34px;padding-top:24px;border-top:1px solid rgba(22,89,107,.16);}
.hero-marks li{display:flex;align-items:center;gap:9px;font-size:14.5px;color:var(--ink-700);}
.hero-marks i{color:var(--brand-500);}

/* ===== 分类概述 ===== */
.overview-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:56px;align-items:start;}
.overview-text p{font-size:16.5px;}
.fact-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:28px;
}
.fact-card h3{font-size:17px;margin-bottom:18px;}
.fact-list li{
  display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line);
}
.fact-list li:last-child{border-bottom:0;padding-bottom:0;}
.fact-list li:first-child{padding-top:0;}
.fact-list .k{color:var(--ink-500);font-size:14px;min-width:88px;flex:none;}
.fact-list .v{color:var(--ink-900);font-size:15.5px;font-weight:600;}

/* ===== Z 字形图文 ===== */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.zig+.zig{margin-top:80px;}
.zig-media{position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-2);}
.zig-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease);}
.zig-media:hover img{transform:scale(1.03);}
.zig-body h2{margin-bottom:16px;}
.zig-body .zig-kicker{
  font-size:13px;letter-spacing:.1em;color:var(--brand-500);font-weight:600;display:block;margin-bottom:12px;
}
.zig-points{margin-top:22px;display:grid;gap:14px;}
.zig-points li{display:flex;gap:12px;align-items:flex-start;font-size:16px;color:var(--ink-700);}
.zig-points i{color:var(--brand-500);margin-top:7px;font-size:14px;flex:none;}
.zig.reverse .zig-media{order:2;}
.zig.reverse .zig-body{order:1;}

/* ===== 能力子项卡 ===== */
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.cap-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px;box-shadow:var(--sh-1);height:100%;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.cap-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(47,138,160,.4);}
.cap-icon{
  width:46px;height:46px;border-radius:12px;background:var(--brand-050);color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:18px;
}
.cap-card h3{font-size:17.5px;margin-bottom:10px;}
.cap-card p{font-size:15px;color:var(--ink-500);line-height:1.8;}

/* ===== 交付流程 ===== */
.flow-list{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;}
.flow-item{position:relative;padding:0 26px 0 0;}
.flow-item::before{
  content:"";position:absolute;top:19px;left:44px;right:0;height:1px;background:rgba(22,89,107,.22);
}
.flow-item:last-child::before{display:none;}
.flow-num{
  position:relative;z-index:2;width:40px;height:40px;border-radius:50%;
  background:#fff;border:1px solid var(--brand-500);color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:20px;
}
.flow-item h3{font-size:17.5px;margin-bottom:10px;}
.flow-item p{font-size:15px;color:var(--ink-500);line-height:1.8;}

/* ===== 案例引用条 ===== */
.quote-band{
  display:grid;grid-template-columns:1fr 1.25fr;gap:56px;align-items:center;
}
.quote-media{border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-2);}
.quote-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.quote-body blockquote{
  margin:0 0 22px;padding:0 0 0 22px;border-left:3px solid var(--brand-500);
  font-size:17.5px;line-height:1.95;color:var(--ink-900);font-family:var(--font-serif);
}
.quote-body cite{display:block;font-style:normal;font-size:14.5px;color:var(--ink-500);margin-bottom:24px;}
.quote-stats{display:flex;gap:40px;flex-wrap:wrap;padding-top:22px;border-top:1px solid var(--line);}
.quote-stats .s{min-width:110px;}
.quote-stats .s b{display:block;font-family:var(--font-serif);font-size:28px;color:var(--brand-700);font-variant-numeric:tabular-nums;}
.quote-stats .s span{font-size:13.5px;color:var(--ink-500);}

/* ===== FAQ ===== */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.faq-side h2{margin-bottom:16px;}
.faq-side p{font-size:15.5px;color:var(--ink-500);}
.faq-side .faq-side-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:20px;font-size:15px;font-weight:600;
}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{margin:0;}
.faq-toggle{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:transparent;border:0;padding:22px 0;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink-900);font-family:var(--font-sans);
  transition:color .22s var(--ease);
}
.faq-toggle:hover{color:var(--brand-700);}
.faq-icon{
  position:relative;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);
  flex:none;transition:transform .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--brand-700);
  transform:translate(-50%,-50%);transition:background .24s var(--ease);
}
.faq-icon::before{width:11px;height:1.6px;}
.faq-icon::after{width:1.6px;height:11px;}
.faq-toggle[aria-expanded="true"] .faq-icon{transform:rotate(45deg);border-color:var(--brand-700);background:var(--brand-050);}
.faq-toggle[aria-expanded="true"]{color:var(--brand-900);}
.faq-a{padding:0 0 24px;font-size:15.5px;line-height:1.85;color:var(--ink-700);max-width:760px;}

/* ===== CTA 带 ===== */
.cta-band{background:var(--brand-900);color:#fff;padding:72px 0;}
.cta-inner{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center;}
.cta-band h2{color:#fff;font-size:29px;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:16px;margin-bottom:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-note{color:rgba(255,255,255,.62);font-size:13.5px;margin-top:14px;text-align:right;}

/* ===== 相关分类互链 ===== */
.linkcard-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.link-card{
  display:flex;flex-direction:column;gap:12px;height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 26px;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.link-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(47,138,160,.4);}
.link-card .link-tag{
  align-self:flex-start;font-size:13px;font-weight:600;color:var(--brand-700);
  background:var(--brand-050);border-radius:999px;padding:5px 13px;
}
.link-card h3{font-size:18px;color:var(--ink-900);}
.link-card p{font-size:15px;color:var(--ink-500);line-height:1.8;margin:0;flex:1;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--brand-700);}
.link-card:hover .link-arrow i{transform:translateX(4px);}
.link-arrow i{transition:transform .24s var(--ease);}

/* ===== 页脚 ===== */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.8);padding:72px 0 0;font-size:14.5px;line-height:1.85;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:44px;}
.site-footer .logo-text{color:#fff;}
.site-footer .logo-mark{background:rgba(255,255,255,.12);color:#fff;}
.site-footer .logo:hover .logo-mark{background:#fff;color:var(--brand-900);}
.footer-brand p{margin:20px 0 22px;color:rgba(255,255,255,.72);font-size:14.5px;}
.footer-contact li{display:flex;gap:11px;align-items:flex-start;margin-bottom:10px;color:rgba(255,255,255,.78);}
.footer-contact i{color:var(--brand-500);margin-top:5px;width:16px;text-align:center;flex:none;}
.site-footer h4{color:#fff;font-family:var(--font-sans);font-size:15.5px;font-weight:600;margin-bottom:20px;letter-spacing:.02em;}
.footer-links li{margin-bottom:12px;}
.footer-links a{color:rgba(255,255,255,.8);}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-service li{display:flex;gap:11px;align-items:flex-start;margin-bottom:14px;color:rgba(255,255,255,.78);}
.footer-service i{color:var(--brand-500);margin-top:5px;width:16px;text-align:center;flex:none;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.78);}
.footer-bottom a:hover{color:#fff;}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
  h1{font-size:36px;}
  .cat-hero h1{font-size:36px;}
  .cap-grid{grid-template-columns:repeat(2,1fr);}
  .flow-list{grid-template-columns:repeat(2,1fr);gap:40px 0;}
  .flow-item:nth-child(2)::before{display:none;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px;}
  .footer-grid>div:last-child{grid-column:1/-1;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn{display:none;}
  .nav-list{
    position:fixed;top:0;right:0;width:84vw;max-width:360px;height:100vh;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;margin:0;
    padding:84px 0 110px;overflow-y:auto;
    transform:translateX(102%);transition:transform .26s var(--ease);
    box-shadow:-16px 0 40px -20px rgba(12,55,66,.35);z-index:1055;
  }
  .nav-list.open{transform:translateX(0);}
  .nav-list a{height:52px;padding:0 24px;border-bottom:1px solid var(--line);font-size:15.5px;}
  .nav-list a::after{display:none;}
  .nav-list a.active{background:var(--brand-050);color:var(--brand-900);}
  .drawer-cta{
    display:block;position:absolute;left:0;right:0;bottom:0;padding:16px 24px 24px;
    background:#fff;border-top:1px solid var(--line);
  }
  .drawer-cta .btn{width:100%;}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(12,55,66,.42);opacity:0;visibility:hidden;
    transition:opacity .26s var(--ease),visibility .26s var(--ease);z-index:1050;
  }
  .drawer-mask.show{opacity:1;visibility:visible;}
  .overview-grid{grid-template-columns:1fr;gap:36px;}
  .zig{grid-template-columns:1fr;gap:32px;}
  .zig.reverse .zig-media{order:0;}
  .zig.reverse .zig-body{order:0;}
  .zig+.zig{margin-top:64px;}
  .quote-band{grid-template-columns:1fr;gap:32px;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .cta-actions{justify-content:flex-start;}
  .cta-note{text-align:left;}
  .linkcard-grid{grid-template-columns:1fr;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .container{padding-left:16px;padding-right:16px;}
  .topbar{height:auto;padding:9px 0;font-size:12.5px;}
  .topbar-left .tip,.topbar-right .link-more{display:none;}
  .topbar-right{gap:14px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  h1{font-size:29px;}
  h2{font-size:23px;}
  .cat-hero{min-height:260px;}
  .cat-hero .container{padding-top:40px;padding-bottom:40px;}
  .cat-hero h1{font-size:27px;}
  .cat-hero .lead{font-size:16px;}
  .cat-hero-actions .btn{flex:1 1 100%;}
  .hero-marks{gap:10px 20px;margin-top:26px;padding-top:20px;}
  .sec-head{margin-bottom:32px;}
  .cap-grid{grid-template-columns:1fr;}
  .flow-list{grid-template-columns:1fr;gap:0;}
  .flow-item{padding:0 0 32px 30px;border-left:1px solid rgba(22,89,107,.22);}
  .flow-item::before{display:none;}
  .flow-item:last-child{border-left-color:transparent;padding-bottom:0;}
  .flow-num{width:34px;height:34px;font-size:13px;margin-bottom:14px;margin-left:-47px;}
  .footer-grid{grid-template-columns:1fr;gap:34px;}
  .site-footer{padding-top:56px;}
  .quote-stats{gap:26px;}
  .btn{padding:13px 22px;}
  .cta-band{padding:56px 0;}
  .cta-band h2{font-size:23px;}
}
@media (max-width:479.98px){
  .logo-text{font-size:17px;}
  .cat-hero h1{font-size:24px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category2 */
:root{
  --brand-900:#0C3742;
  --brand-700:#16596B;
  --brand-500:#2F8AA0;
  --brand-050:#EAF3F5;
  --accent:#D2782F;
  --accent-hover:#B4631F;
  --ink-900:#0F1E24;
  --ink-700:#33474E;
  --ink-500:#6B7F86;
  --line:#DFE8EB;
  --bg:#F5F8F9;
  --surface:#FFFFFF;
  --success:#2E8B6B;
  --error:#C4453A;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --sh-1:0 1px 2px rgba(12,55,66,.05);
  --sh-2:0 10px 30px -12px rgba(12,55,66,.18);
  --sh-3:0 18px 40px -16px rgba(12,55,66,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#16596B;
  --bs-primary-rgb:22,89,107;
  --bs-link-color:#16596B;
  --bs-link-hover-color:#0C3742;
  --bs-body-color:#33474E;
  --bs-body-bg:#FFFFFF;
  --bs-border-color:#DFE8EB;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  --bs-body-font-size:16px;
  --bs-border-radius:10px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.9;
  color:var(--ink-700);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand-900)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1.1em}
h1,h2,h3,h4{
  font-family:"Noto Serif SC","Songti SC","SimSun",serif;
  color:var(--ink-900);
  letter-spacing:.01em;
  font-weight:600;
  margin:0;
  line-height:1.45;
}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.container{max-width:1280px}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-900);color:rgba(255,255,255,.8);font-size:13px;min-height:38px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:38px;flex-wrap:wrap}
.topbar-left{display:flex;align-items:center;gap:14px}
.topbar-left .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none}
.topbar-domain{color:rgba(255,255,255,.92);letter-spacing:.02em}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-right a{color:rgba(255,255,255,.86);display:inline-flex;align-items:center;gap:6px}
.topbar-right a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
@media (max-width:767.98px){
  .topbar{font-size:12.5px}
  .topbar-left .tip{display:none}
  .topbar-right .long{display:none}
}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;background:var(--surface);
  border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease);
}
.site-header.is-stuck{box-shadow:var(--sh-2)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .24s var(--ease)}
.site-header.is-stuck .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);flex:none}
.logo-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-050);color:var(--brand-700);border:1px solid rgba(22,89,107,.16);
}
.logo-mark svg{width:22px;height:22px}
.logo-text{font-family:"Noto Serif SC",serif;font-size:19px;font-weight:700;letter-spacing:.02em}
.logo:hover .logo-mark{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-list a{
  display:inline-block;padding:8px 14px;font-size:15px;color:var(--ink-700);border-radius:8px;position:relative;
}
.nav-list a:hover{color:var(--brand-700);background:var(--brand-050)}
.nav-list a.active{color:var(--brand-700);font-weight:600}
.nav-list a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-2px;height:2px;background:var(--brand-700);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-700);
  display:grid;place-items:center;transition:all .22s var(--ease);cursor:pointer;
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-050)}
.nav-toggle{display:none}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  padding:11px 22px;border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background-color .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  line-height:1.4;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-700)}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-900);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px)}
.btn:active{transform:translateY(0);box-shadow:none}
.btn:disabled,.btn.disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn-sm{padding:8px 16px;font-size:14px}
.btn-lg{padding:14px 28px;font-size:16px}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(12,55,66,.42);opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:1050;
}
.drawer-mask.show{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:340px;background:#fff;z-index:1060;
  transform:translateX(100%);transition:transform .28s var(--ease);display:flex;flex-direction:column;
  box-shadow:-18px 0 40px -20px rgba(12,55,66,.4);
}
.nav-drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-list{flex:1;overflow-y:auto;padding:8px 0}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 20px;font-size:16px;color:var(--ink-700);border-bottom:1px solid var(--line);
}
.drawer-list a.active{color:var(--brand-700);font-weight:600;background:var(--brand-050)}
.drawer-list a i{color:var(--ink-500);font-size:13px}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}
@media (max-width:991.98px){
  .nav-list{display:none}
  .nav-toggle{display:grid}
  .nav-actions .btn-cta{display:none}
}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--bg);border-bottom:1px solid var(--line)}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-500);padding:12px 0;flex-wrap:wrap}
.crumbs a{color:var(--ink-500)}
.crumbs a:hover{color:var(--brand-700)}
.crumbs .sep{color:#B9C8CD}
.crumbs .current{color:var(--ink-700)}

/* ---------- 分类 Hero ---------- */
.page-hero{
  position:relative;min-height:352px;display:flex;align-items:center;
  background:linear-gradient(90deg,rgba(12,55,66,.9) 0%,rgba(12,55,66,.72) 46%,rgba(12,55,66,.34) 100%),
             url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:rgba(255,255,255,.14);
}
.hero-inner{position:relative;z-index:2;padding:64px 0;max-width:760px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(234,243,245,.16);border:1px solid rgba(234,243,245,.34);color:#EAF3F5;
  font-size:13px;letter-spacing:.04em;margin-bottom:18px;
}
.hero-badge i{color:var(--accent)}
.page-hero h1{
  color:#fff;font-size:clamp(26px,3.4vw,40px);line-height:1.32;margin-bottom:16px;
}
.page-hero p.lead{
  color:rgba(255,255,255,.86);font-size:16.5px;line-height:1.85;margin-bottom:26px;max-width:640px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.page-hero .btn-ghost{color:#fff;border-color:rgba(255,255,255,.6)}
.page-hero .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.hero-facts{display:flex;flex-wrap:wrap;gap:26px;margin-top:30px;padding-top:22px;border-top:1px solid rgba(255,255,255,.2)}
.hero-facts div{color:rgba(255,255,255,.86);font-size:13.5px;display:flex;align-items:center;gap:8px}
.hero-facts i{color:var(--accent)}
@media (max-width:767.98px){
  .page-hero{min-height:260px}
  .hero-inner{padding:44px 0}
  .hero-facts{gap:14px;margin-top:22px;padding-top:16px}
}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg);padding:96px 0}
.section-tint{background:var(--brand-050);padding:96px 0}
@media (max-width:991.98px){.section,.section-alt,.section-tint{padding:72px 0}}
@media (max-width:767.98px){.section,.section-alt,.section-tint{padding:56px 0}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--accent);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.section-title{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px}
.section-sub{font-size:16px;color:var(--ink-500);max-width:720px;margin-bottom:0}
.section-head{margin-bottom:44px}
.section-head.split-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ---------- 概述 ---------- */
.overview-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.overview-grid p{font-size:16.5px;line-height:1.95}
.overview-media{position:relative;border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--sh-2)}
.overview-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.overview-media .badge-float{
  position:absolute;left:18px;bottom:18px;background:rgba(255,255,255,.96);border-radius:12px;
  padding:12px 16px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:12px;
}
.overview-media .badge-float strong{font-family:"Noto Serif SC",serif;font-size:20px;color:var(--brand-700);font-variant-numeric:tabular-nums}
.overview-media .badge-float span{font-size:13px;color:var(--ink-500);line-height:1.4}
@media (max-width:991.98px){.overview-grid{grid-template-columns:1fr;gap:32px}}

/* ---------- 左右分栏编号列表 ---------- */
.split{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start}
.split-left{position:sticky;top:110px}
.split-left h2{font-size:clamp(21px,2.2vw,27px);margin-bottom:14px}
.split-left p{color:var(--ink-500);font-size:15.5px;line-height:1.9;margin-bottom:20px}
.split-left .mini-note{
  border-left:3px solid var(--accent);background:#fff;border-radius:0 10px 10px 0;
  padding:14px 16px;font-size:14px;color:var(--ink-700);box-shadow:var(--sh-1);
}
@media (max-width:991.98px){
  .split{grid-template-columns:1fr;gap:32px}
  .split-left{position:static}
}

.num-list{display:grid;gap:16px}
.num-item{
  display:grid;grid-template-columns:64px 1fr;gap:20px;align-items:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.num-item:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(22,89,107,.4)}
.num-index{
  font-family:"Noto Serif SC",serif;font-size:26px;font-weight:700;color:var(--brand-050);
  -webkit-text-stroke:1px rgba(22,89,107,.55);font-variant-numeric:tabular-nums;line-height:1.2;
}
.num-item h3{font-size:17.5px;margin-bottom:8px}
.num-item p{font-size:15px;color:var(--ink-700);margin-bottom:12px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-block;padding:4px 12px;border-radius:999px;background:var(--brand-050);
  color:var(--brand-700);font-size:12.5px;line-height:1.7;
}
@media (max-width:575.98px){
  .num-item{grid-template-columns:1fr;gap:10px;padding:20px}
  .num-index{font-size:22px}
}

/* ---------- 流程时间线 ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:24px;right:24px;top:23px;height:2px;background:var(--line);z-index:0;
}
.tl-step{position:relative;z-index:1;padding-top:0}
.tl-dot{
  width:48px;height:48px;border-radius:50%;background:#fff;border:2px solid var(--brand-500);
  color:var(--brand-700);display:grid;place-items:center;font-family:"Noto Serif SC",serif;font-weight:700;
  font-variant-numeric:tabular-nums;margin-bottom:18px;box-shadow:var(--sh-1);
}
.tl-step h3{font-size:16.5px;margin-bottom:8px}
.tl-step p{font-size:14.5px;color:var(--ink-500);line-height:1.85;margin:0}
@media (max-width:991.98px){
  .timeline{grid-template-columns:1fr;gap:0}
  .timeline::before{left:23px;right:auto;top:10px;bottom:10px;width:2px;height:auto}
  .tl-step{padding:0 0 28px 68px}
  .tl-dot{position:absolute;left:0;top:0;margin:0}
  .tl-step:last-child{padding-bottom:0}
}

/* ---------- 案例引用条 ---------- */
.quote-band{background:var(--brand-900);padding:72px 0;color:#fff}
.quote-inner{display:grid;grid-template-columns:1fr 340px;gap:48px;align-items:center}
.quote-band .quote-badge{
  display:inline-flex;align-items:center;gap:8px;padding:5px 13px;border-radius:999px;
  background:rgba(210,120,47,.18);color:#F0B57C;font-size:12.5px;margin-bottom:18px;
}
.quote-band blockquote{
  margin:0;font-family:"Noto Serif SC",serif;font-size:clamp(18px,1.9vw,23px);
  line-height:1.75;color:#fff;
}
.quote-band .quote-from{margin-top:18px;font-size:14px;color:rgba(255,255,255,.7)}
.quote-figures{display:grid;gap:14px}
.quote-figures .fig{
  border:1px solid rgba(255,255,255,.18);border-radius:12px;padding:16px 18px;background:rgba(255,255,255,.04);
}
.quote-figures .fig strong{
  display:block;font-family:"Noto Serif SC",serif;font-size:24px;color:#fff;font-variant-numeric:tabular-nums;line-height:1.4;
}
.quote-figures .fig span{font-size:13px;color:rgba(255,255,255,.72)}
@media (max-width:991.98px){.quote-inner{grid-template-columns:1fr;gap:30px}}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-grid .side p{font-size:15.5px;color:var(--ink-500);line-height:1.9}
.faq-grid .side .btn{margin-top:8px}
@media (max-width:991.98px){.faq-grid{grid-template-columns:1fr;gap:32px}}
.accordion-item{border:none;border-bottom:1px solid var(--line);background:transparent}
.accordion-item:first-of-type{border-top:1px solid var(--line)}
.accordion-button{
  background:transparent;border:none;box-shadow:none;padding:22px 52px 22px 0;
  font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.6;position:relative;
}
.accordion-button::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:14px;
  width:28px;height:28px;border-radius:50%;border:1px solid var(--line);color:var(--brand-700);
  display:grid;place-items:center;position:absolute;right:0;top:50%;transform:translateY(-50%);
  background:transparent;background-image:none;transition:transform .24s var(--ease),background-color .24s var(--ease),color .24s var(--ease);
}
.accordion-button:not(.collapsed){color:var(--brand-700);background:transparent;box-shadow:none}
.accordion-button:not(.collapsed)::after{
  content:"\f067";transform:translateY(-50%) rotate(45deg);background:var(--brand-050);color:var(--brand-700);
}
.accordion-button:focus{box-shadow:none;border-color:transparent}
.accordion-button:hover{color:var(--brand-700)}
.accordion-body{padding:0 60px 24px 0;font-size:15px;line-height:1.85;color:var(--ink-700)}
@media (max-width:575.98px){
  .accordion-button{font-size:16px;padding:18px 46px 18px 0}
  .accordion-body{padding:0 0 20px 0}
}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:linear-gradient(115deg,var(--brand-900) 0%,var(--brand-700) 100%);
  padding:72px 0;color:#fff;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,29px);margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,.82);font-size:15.5px;margin:0;max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.6)}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}

/* ---------- 相关分类 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{
  display:flex;flex-direction:column;gap:12px;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(22,89,107,.4)}
.related-card .rc-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-050);color:var(--brand-700);
  display:grid;place-items:center;font-size:18px;
}
.related-card h3{font-size:17.5px}
.related-card p{font-size:14.5px;color:var(--ink-500);margin:0;line-height:1.85}
.related-card .rc-link{margin-top:auto;font-size:14.5px;font-weight:600;color:var(--brand-700);display:inline-flex;align-items:center;gap:8px}
.related-card:hover .rc-link i{transform:translateX(4px)}
.related-card .rc-link i{transition:transform .22s var(--ease)}
@media (max-width:991.98px){.related-grid{grid-template-columns:1fr;gap:18px}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.8);padding:72px 0 0;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:48px}
.footer-brand .logo{color:#fff}
.footer-brand .logo-mark{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.2)}
.footer-brand .logo-text{color:#fff}
.footer-brand p{margin:18px 0 20px;line-height:1.9;color:rgba(255,255,255,.72);font-size:14px}
.site-footer h4{
  color:#fff;font-size:15.5px;margin-bottom:18px;font-family:var(--bs-font-sans-serif);
  font-weight:600;letter-spacing:.02em;
}
.footer-links li{margin-bottom:11px}
.footer-links a{color:rgba(255,255,255,.8);font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-contact li,.footer-service li{
  display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;color:rgba(255,255,255,.8);font-size:14px;line-height:1.75;
}
.footer-contact i,.footer-service i{color:var(--accent);margin-top:6px;font-size:13px;flex:none}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;justify-content:space-between;
  gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.62);
}
.footer-bottom a{color:rgba(255,255,255,.8)}
.footer-bottom a:hover{color:#fff}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .site-footer{padding-top:56px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .num-item:hover,.related-card:hover,.btn:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --brand-900:#0C3742;--brand-700:#16596B;--brand-500:#2F8AA0;--brand-050:#EAF3F5;
  --accent:#D2782F;--accent-hover:#B4631F;
  --ink-900:#0F1E24;--ink-700:#33474E;--ink-500:#6B7F86;
  --line:#DFE8EB;--bg:#F5F8F9;--surface:#FFFFFF;
  --success:#2E8B6B;--error:#C4453A;
  --radius-card:14px;--radius-img:14px;--radius-btn:10px;--radius-input:10px;
  --sh-1:0 1px 2px rgba(12,55,66,.05);
  --sh-2:0 10px 30px -12px rgba(12,55,66,.18);
  --sh-3:0 18px 40px -16px rgba(12,55,66,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#16596B;--bs-primary-rgb:22,89,107;--bs-body-color:#33474E;
  --bs-border-color:#DFE8EB;--bs-link-color:#16596B;--bs-link-hover-color:#0C3742;
  --bs-border-radius:10px;--bs-body-bg:#FFFFFF;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:#fff;color:var(--ink-700);
  font-family:var(--bs-font-sans-serif);font-size:16.5px;line-height:1.9;
  font-feature-settings:"tnum";-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,.serif{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  font-weight:600;color:var(--ink-900);letter-spacing:.01em;line-height:1.35;margin:0;
}
p{margin:0}
a{color:var(--brand-700);text-decoration:none;transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease)}
a:hover{color:var(--brand-900)}
img{max-width:100%;display:block;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea,select{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:767.98px){.container{padding-left:16px;padding-right:16px}}
.section{padding:96px 0}
.section-sm{padding:72px 0}
.bg-mist{background:var(--bg)}
.bg-tint{background:var(--brand-050)}
.bg-white{background:#fff}
@media (max-width:991.98px){.section{padding:72px 0}.section-sm{padding:56px 0}}
@media (max-width:575.98px){.section{padding:56px 0}.section-sm{padding:44px 0}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-900);color:rgba(255,255,255,.8);font-size:13.5px;line-height:1.6}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;padding-top:6px;padding-bottom:6px}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.topbar-domain{letter-spacing:.06em;color:#fff;font-weight:600}
.topbar-tip{position:relative;padding-left:14px;color:rgba(255,255,255,.72);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-tip::before{content:"";position:absolute;left:0;top:50%;width:1px;height:12px;background:rgba(255,255,255,.25);transform:translateY(-50%)}
.topbar-right{display:flex;align-items:center;gap:18px;white-space:nowrap}
.topbar-right a{color:rgba(255,255,255,.84)}
.topbar-right a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.topbar-right i{margin-right:6px;color:var(--brand-500)}
@media (max-width:767.98px){
  .topbar{font-size:12.5px}
  .topbar-tip{display:none}
  .topbar-right{gap:14px}
  .topbar-right a:last-child{display:none}
}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease)
}
.site-header.scrolled{box-shadow:var(--sh-2)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .24s var(--ease)}
.site-header.scrolled .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:600;flex:0 0 auto}
.logo:hover{color:var(--brand-900)}
.logo-mark{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;color:var(--brand-700)}
.logo-mark svg{width:32px;height:32px}
.logo-text{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;font-size:19px;letter-spacing:.02em}
.nav-list{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center}
.nav-list a{
  position:relative;display:inline-block;padding:10px 14px;font-size:15.5px;color:var(--ink-700);
  border-radius:8px;white-space:nowrap
}
.nav-list a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--brand-700);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)
}
.nav-list a:hover{color:var(--brand-900);background:var(--brand-050)}
.nav-list a:hover::after,.nav-list a.active::after{transform:scaleX(1)}
.nav-list a.active{color:var(--brand-900);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;border-radius:10px;color:var(--ink-700);
  transition:all .22s var(--ease)
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-900);background:var(--brand-050)}
.nav-toggle{display:none}
@media (max-width:1199.98px){.nav-list a{padding:10px 10px;font-size:15px}}
@media (max-width:991.98px){
  .nav-toggle{display:inline-flex;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--line);background:#fff;border-radius:10px;color:var(--ink-900)}
  .nav-list{
    position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;background:#fff;z-index:1055;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    padding:88px 20px 96px;overflow-y:auto;transform:translateX(102%);
    transition:transform .28s var(--ease);box-shadow:var(--sh-3)
  }
  .nav-list.open{transform:translateX(0)}
  .nav-list a{padding:0 4px;height:52px;line-height:52px;border-bottom:1px solid var(--line);border-radius:0;font-size:16px}
  .nav-list a::after{display:none}
  .nav-list a.active{color:var(--brand-700)}
  .nav-drawer-cta{
    position:absolute;left:20px;right:20px;bottom:24px;display:none
  }
  .nav-list.open .nav-drawer-cta{display:block}
  .nav-backdrop{position:fixed;inset:0;background:rgba(12,55,66,.42);z-index:1050;opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease)}
  .nav-backdrop.show{opacity:1;visibility:visible}
}
@media (min-width:992px){.nav-drawer-cta{display:none!important}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;font-size:15.5px;font-weight:600;border-radius:var(--radius-btn);
  border:1px solid transparent;transition:all .22s var(--ease);cursor:pointer;line-height:1.2
}
.btn i{font-size:14px}
.btn-primary{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}
.btn-primary:hover{background:var(--brand-900);border-color:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);background:var(--brand-900)}
.btn-primary:disabled,.btn-primary.disabled{background:#9FB6BC;border-color:#9FB6BC;color:#fff;transform:none;box-shadow:none;cursor:not-allowed}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-700)}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-900);border-color:var(--brand-900)}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-accent:hover{background:var(--accent-hover);border-color:var(--accent-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-light{background:#fff;color:var(--brand-900);border-color:#fff}
.btn-light:hover{background:var(--brand-050);color:var(--brand-900);transform:translateY(-1px)}
.btn-sm{padding:10px 18px;font-size:14.5px}
.btn-block{width:100%}

/* ---------- 通用元素 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.1em;
  color:var(--brand-700);text-transform:uppercase;margin-bottom:14px
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.section-head{max-width:760px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:34px;margin-bottom:16px}
.section-head p{color:var(--ink-500);font-size:16.5px}
@media (max-width:767.98px){.section-head h2{font-size:26px}.section-head{margin-bottom:32px}}
.badge-tag{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-700);font-size:13px;font-weight:600
}
.text-accent{color:var(--accent)}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand-700)}
.arrow-link i{transition:transform .22s var(--ease)}
.arrow-link:hover i{transform:translateX(4px)}
.divider-line{height:1px;background:var(--line);border:0;opacity:1;margin:0}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{background:var(--bg);border-bottom:1px solid var(--line);padding:14px 0}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-500)}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px}
.crumb .sep{color:#B8C6CB}
.crumb .current{color:var(--ink-700);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60vw}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;min-height:360px;display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;overflow:hidden
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(12,55,66,.92) 0%,rgba(12,55,66,.80) 46%,rgba(22,89,107,.58) 100%)
}
.cat-hero .container{position:relative;z-index:2;padding-top:64px;padding-bottom:64px}
.cat-hero h1{color:#fff;font-size:40px;line-height:1.3;margin-bottom:18px;max-width:760px}
.cat-hero .hero-sub{color:rgba(255,255,255,.86);font-size:17px;max-width:720px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-marks{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.18)}
.hero-marks span{display:inline-flex;align-items:center;gap:9px;color:rgba(255,255,255,.85);font-size:14.5px}
.hero-marks i{color:var(--accent);font-size:14px}
@media (max-width:767.98px){
  .cat-hero{min-height:260px}
  .cat-hero .container{padding-top:44px;padding-bottom:44px}
  .cat-hero h1{font-size:27px}
  .cat-hero .hero-sub{font-size:15.5px}
  .hero-actions .btn{flex:1 1 100%}
}

/* ---------- 概述 ---------- */
.overview-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.overview-copy h2{font-size:32px;margin-bottom:18px}
.overview-copy p{margin-bottom:16px}
.overview-points{display:grid;gap:14px;margin-top:26px}
.overview-points li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px}
.overview-points i{color:var(--brand-500);margin-top:6px;font-size:14px}
.overview-figure{position:relative}
.overview-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);
  box-shadow:var(--sh-2)
}
.overview-figure .figure-note{
  position:absolute;left:20px;bottom:-22px;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:14px 20px;box-shadow:var(--sh-2);min-width:220px
}
.overview-figure .figure-note strong{display:block;font-family:"Noto Serif SC",serif;font-size:22px;color:var(--brand-900);font-variant-numeric:tabular-nums}
.overview-figure .figure-note span{font-size:13.5px;color:var(--ink-500)}
@media (max-width:991.98px){
  .overview-grid{grid-template-columns:1fr;gap:40px}
  .overview-copy h2{font-size:26px}
  .overview-figure .figure-note{position:static;margin-top:16px;display:inline-block}
}

/* ---------- 能力卡片 2×2 ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.cap-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;
  box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
  display:flex;flex-direction:column;height:100%
}
.cap-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(22,89,107,.4)}
.cap-icon{
  width:52px;height:52px;border-radius:14px;background:var(--brand-050);color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:18px
}
.cap-card h3{font-size:21px;margin-bottom:10px}
.cap-card p{font-size:15.5px;color:var(--ink-700);margin-bottom:18px}
.cap-card .arrow-link{margin-top:auto}
@media (max-width:767.98px){.cap-grid{grid-template-columns:1fr;gap:18px}.cap-card{padding:22px}}

/* ---------- 时间线 ---------- */
.timeline{margin-top:64px;position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.timeline::before{
  content:"";position:absolute;left:26px;right:26px;top:23px;height:2px;background:var(--line);z-index:0
}
.tl-node{position:relative;z-index:1;padding-top:0}
.tl-dot{
  width:48px;height:48px;border-radius:50%;background:#fff;border:2px solid var(--brand-500);
  color:var(--brand-700);display:flex;align-items:center;justify-content:center;
  font-family:"Noto Serif SC",serif;font-size:18px;font-weight:600;margin-bottom:20px;
  box-shadow:0 0 0 6px #fff;font-variant-numeric:tabular-nums
}
.tl-node h3{font-size:18px;margin-bottom:8px}
.tl-node p{font-size:15px;color:var(--ink-500)}
.tl-node .tl-time{display:inline-block;margin-top:10px;font-size:13px;color:var(--accent);font-weight:600;background:#FBF1E8;padding:3px 10px;border-radius:999px}
@media (max-width:991.98px){
  .timeline{grid-template-columns:1fr;gap:0;margin-top:48px;padding-left:8px}
  .timeline::before{left:31px;right:auto;top:12px;bottom:24px;width:2px;height:auto}
  .tl-node{padding-left:72px;padding-bottom:32px}
  .tl-dot{position:absolute;left:0;top:0;margin-bottom:0;width:46px;height:46px}
}

/* ---------- 案例引用条 ---------- */
.case-strip{
  background:var(--brand-900);border-radius:18px;overflow:hidden;
  display:grid;grid-template-columns:1.15fr .85fr;align-items:stretch
}
.case-strip .case-body{padding:48px 44px;color:rgba(255,255,255,.84)}
.case-strip .badge-tag{background:rgba(255,255,255,.12);color:#fff;margin-bottom:18px}
.case-strip blockquote{
  margin:0 0 20px;font-family:"Noto Serif SC",serif;font-size:22px;line-height:1.7;color:#fff
}
.case-strip .case-meta{font-size:14.5px;color:rgba(255,255,255,.66)}
.case-strip .case-metrics{display:flex;flex-wrap:wrap;gap:28px;margin-top:28px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14)}
.case-strip .case-metrics div strong{display:block;font-family:"Noto Serif SC",serif;font-size:26px;color:#fff;font-variant-numeric:tabular-nums}
.case-strip .case-metrics div span{font-size:13.5px;color:rgba(255,255,255,.62)}
.case-strip .case-figure{position:relative;min-height:280px}
.case-strip .case-figure img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
@media (max-width:991.98px){
  .case-strip{grid-template-columns:1fr}
  .case-strip .case-body{padding:32px 24px}
  .case-strip blockquote{font-size:19px}
  .case-strip .case-figure{min-height:220px;order:-1}
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-aside h2{font-size:32px;margin-bottom:16px}
.faq-aside p{color:var(--ink-500);font-size:15.5px;margin-bottom:22px}
.faq-accordion .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
.faq-accordion .accordion-item:first-child{border-top:1px solid var(--line)}
.faq-accordion .accordion-header{margin:0}
.faq-accordion .accordion-button{
  background:transparent;color:var(--ink-900);font-size:17px;font-weight:600;line-height:1.7;
  padding:22px 52px 22px 0;box-shadow:none;border-radius:0
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand-900);background:transparent;box-shadow:none}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand-700);outline-offset:-2px}
.faq-accordion .accordion-button::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;
  width:28px;height:28px;border-radius:50%;background:var(--brand-050);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;position:absolute;right:0;top:50%;
  transform:translateY(-50%);background-image:none;transition:transform .24s var(--ease),background-color .24s var(--ease)
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  content:"\f067";transform:translateY(-50%) rotate(45deg);background:var(--brand-700);color:#fff
}
.faq-accordion .accordion-body{padding:0 52px 24px 0;font-size:15.5px;line-height:1.85;color:var(--ink-700)}
@media (max-width:991.98px){
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-aside h2{font-size:26px}
  .faq-accordion .accordion-button{font-size:16px;padding-right:44px}
  .faq-accordion .accordion-body{padding-right:12px}
}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--brand-900);color:rgba(255,255,255,.84);position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,138,160,.34) 0%,rgba(47,138,160,0) 68%)
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.cta-copy h2{color:#fff;font-size:32px;margin-bottom:16px}
.cta-copy p{font-size:16px;margin-bottom:26px}
.cta-contact{display:grid;gap:14px;margin-top:8px}
.cta-contact li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:rgba(255,255,255,.86)}
.cta-contact i{color:var(--brand-500);margin-top:6px;width:18px;text-align:center}
.cta-form{
  background:#fff;border-radius:18px;padding:32px;box-shadow:var(--sh-3)
}
.cta-form h3{font-size:21px;margin-bottom:6px}
.cta-form .form-hint{font-size:14px;color:var(--ink-500);margin-bottom:22px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:8px}
.field .form-control,.field .form-select{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--radius-input);
  padding:0 14px;font-size:15px;color:var(--ink-900);background:#fff;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease)
}
.field textarea.form-control{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical}
.field .form-control::placeholder{color:#9BAAB0}
.field .form-control:focus,.field .form-select:focus{
  border-color:var(--brand-700);box-shadow:0 0 0 3px var(--brand-050);outline:none
}
.field .form-control.is-invalid{border-color:var(--error)}
.field .err-text{display:none;font-size:13px;color:var(--error);margin-top:6px}
.field.has-error .err-text{display:block}
.form-foot{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:6px}
.form-foot .privacy{font-size:13px;color:var(--ink-500)}
@media (max-width:991.98px){
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .cta-copy h2{font-size:26px}
  .cta-form{padding:24px}
}
@media (max-width:575.98px){
  .form-row{grid-template-columns:1fr}
  .form-foot .btn{width:100%}
}

/* ---------- 相关分类互链 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;
  box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
  display:flex;flex-direction:column;height:100%
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(22,89,107,.4)}
.related-card .rc-icon{font-size:20px;color:var(--brand-500);margin-bottom:16px}
.related-card h3{font-size:19px;margin-bottom:10px}
.related-card p{font-size:15px;color:var(--ink-500);margin-bottom:18px}
.related-card .arrow-link{margin-top:auto}
@media (max-width:767.98px){.related-grid{grid-template-columns:1fr}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.8);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{color:#fff;margin-bottom:18px}
.footer-brand .logo:hover{color:#fff}
.footer-brand .logo-mark{color:#7FC0D2}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.72);margin-bottom:20px}
.footer-contact{display:grid;gap:10px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(255,255,255,.8)}
.footer-contact i{color:var(--brand-500);margin-top:5px;width:16px;text-align:center}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;font-family:"Noto Serif SC",serif}
.footer-links{display:grid;gap:10px}
.footer-links a{color:rgba(255,255,255,.8);font-size:14.5px}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-service{display:grid;gap:12px}
.footer-service li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(255,255,255,.8)}
.footer-service i{color:var(--brand-500);margin-top:5px;width:16px;text-align:center}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;flex-wrap:wrap;
  justify-content:space-between;gap:12px;font-size:13.5px;color:rgba(255,255,255,.62)
}
.footer-bottom a{color:rgba(255,255,255,.82)}
.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
@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}.site-footer{padding-top:52px}}

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