/* roulang page: index */
:root{
  --brand:#1B5C7A;
  --brand-dark:#14475F;
  --brand-soft:#EAF3F7;
  --brand-tint:#F4F9FB;
  --amber:#D98A2B;
  --ink:#12222B;
  --ink2:#4A5C66;
  --ink3:#7C8C95;
  --line:#DCE6EC;
  --line-soft:#EDF2F5;
  --bg:#F7FAFB;
  --card:#FFFFFF;
  --footer-bg:#F1F5F8;
  --danger:#C2452D;
  --r-card:16px;
  --r-lg:24px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(18,34,43,.05),0 6px 18px -12px rgba(18,34,43,.12);
  --shadow-2:0 2px 4px rgba(18,34,43,.06),0 18px 36px -18px rgba(18,34,43,.22);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  padding-bottom:84px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:4px;}
::selection{background:var(--brand-soft);color:var(--brand-dark);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-thumb{background:#CBD9E1;border-radius:99px;}
::-webkit-scrollbar-track{background:#EFF4F7;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ============ 通用文字 ============ */
.h1{font-size:clamp(30px,3.6vw,46px);font-weight:700;line-height:1.25;color:var(--ink);}
.h2{font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.3;color:var(--ink);}
.h3{font-size:20px;font-weight:600;line-height:1.5;color:var(--ink);}
.h4{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);}
.lead{font-size:16px;line-height:1.85;color:var(--ink2);}
.small{font-size:13px;line-height:1.6;color:var(--ink3);}
.num{font-variant-numeric:tabular-nums;}

/* ============ 导航 ============ */
.site-header{position:sticky;top:12px;z-index:60;padding:0 12px;}
.nav-shell{
  max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:16px;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-1);
  padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(150deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;font-size:14px;font-weight:700;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px -8px rgba(27,92,122,.7);
}
.brand-text{font-size:16px;font-weight:700;color:var(--brand);white-space:nowrap;letter-spacing:0;}
.brand-sub{display:block;font-size:11px;font-weight:400;color:var(--ink3);letter-spacing:.4px;line-height:1.2;}
.nav-cards{display:none;align-items:center;gap:6px;margin-left:auto;}
.nav-card{
  display:flex;align-items:center;gap:6px;padding:7px 10px;border-radius:10px;
  background:var(--brand-tint);border:1px solid transparent;
  font-size:12px;color:var(--ink2);white-space:nowrap;
  transition:transform .2s ease-out,background .2s ease-out,border-color .2s ease-out,color .2s ease-out;
}
.nav-card svg{width:14px;height:14px;flex-shrink:0;stroke:currentColor;}
.nav-card:hover{background:#fff;border-color:var(--line);transform:translateY(-1px);color:var(--brand);}
.nav-card.is-active{background:#fff;border-color:var(--line);color:var(--brand);box-shadow:inset 2px 0 0 var(--brand);}
.nav-right{display:flex;align-items:center;gap:8px;margin-left:auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:0 18px;height:44px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:14px;font-weight:600;line-height:1;text-align:center;white-space:nowrap;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn svg{width:16px;height:16px;stroke:currentColor;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px -12px rgba(27,92,122,.9);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink2);}
.btn-ghost:hover{border-color:#CFDDE5;color:var(--brand);transform:translateY(-1px);}
.btn-soft{background:var(--brand-soft);color:var(--brand-dark);}
.btn-soft:hover{background:#DCEBF3;color:var(--brand-dark);transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 14px;font-size:13px;}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;color:var(--ink2);
  transition:background .2s,border-color .2s,color .2s;
}
.icon-btn:hover{border-color:#CFDDE5;color:var(--brand);background:var(--brand-tint);}
.icon-btn svg{width:18px;height:18px;stroke:currentColor;}
.nav-cta{display:none;}
@media (min-width:1024px){
  .nav-cards{display:flex;}
  .nav-right{margin-left:8px;}
  .nav-cta{display:inline-flex;}
  .menu-toggle{display:none;}
}

/* 移动端抽屉 */
.drawer{position:fixed;inset:0;z-index:90;display:none;}
.drawer.is-open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(18,34,43,.42);backdrop-filter:blur(2px);}
.drawer-panel{
  position:relative;margin:12px;background:#fff;border-radius:20px;border:1px solid var(--line);
  box-shadow:var(--shadow-2);padding:18px;max-height:calc(100vh - 24px);overflow:auto;
  animation:drawerIn .22s ease-out;
}
@keyframes drawerIn{from{opacity:0;transform:translateY(-10px);}to{opacity:1;transform:translateY(0);}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.drawer-grid .nav-card{padding:12px 10px;font-size:13px;justify-content:flex-start;background:var(--brand-tint);}
.drawer-foot{margin-top:16px;}
.drawer-foot .btn{width:100%;}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:44px 0 0;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(to right,rgba(27,92,122,.055) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(27,92,122,.055) 1px,transparent 1px);
  background-size:58px 58px;
  mask-image:radial-gradient(120% 70% at 30% 0%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(120% 70% at 30% 0%,#000 20%,transparent 78%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:60px;width:420px;height:320px;border-radius:48px;
  background:var(--brand-soft);opacity:.65;transform:rotate(-6deg);pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
  .hero{padding-top:64px;}
}
.badge{
  display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:12px;color:var(--ink2);font-weight:500;
}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 3px rgba(217,138,43,.16);}
.hero-title{margin-top:18px;}
.hero-sub{margin-top:16px;max-width:34em;font-size:16px;line-height:1.85;color:var(--ink2);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.hero-actions .btn{width:100%;}
@media (min-width:520px){.hero-actions .btn{width:auto;}}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line-soft);}
.trust-item{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--ink2);}
.trust-item svg{width:16px;height:16px;stroke:var(--brand);flex-shrink:0;}
.hero-visual{position:relative;}
.visual-frame{
  position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-2);aspect-ratio:4/3;background:var(--brand-tint);
}
.visual-frame img{width:100%;height:100%;object-fit:cover;}
.visual-frame::after{content:"";position:absolute;inset:0;border-radius:20px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.35);pointer-events:none;}
.float-card{
  position:absolute;left:-14px;bottom:-16px;width:230px;background:#fff;border:1px solid var(--line);
  border-radius:14px;box-shadow:var(--shadow-2);padding:12px 14px;
}
@media (min-width:1024px){.float-card{left:-26px;bottom:-24px;}}
.float-card .tag{
  display:inline-block;font-size:11px;font-weight:600;color:var(--brand-dark);
  background:var(--brand-soft);border-radius:999px;padding:2px 9px;margin-bottom:6px;
}
.float-card p{font-size:13px;line-height:1.65;color:var(--ink2);}
.corner-badge{
  position:absolute;right:-8px;top:-12px;display:inline-flex;align-items:center;gap:6px;
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 12px;
  font-size:12px;font-weight:600;color:var(--brand-dark);box-shadow:var(--shadow-1);
}
.corner-badge svg{width:14px;height:14px;stroke:var(--amber);}

/* ============ 板块 ============ */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:72px 0;}}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-head{max-width:640px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  color:var(--brand);letter-spacing:.6px;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:18px;height:2px;background:var(--amber);border-radius:2px;}
.section-head p{margin-top:12px;color:var(--ink2);font-size:15px;line-height:1.85;}
.head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;}

/* ============ 卖点卡 ============ */
.point-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:40px;}
@media (min-width:768px){.point-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.point-grid{grid-template-columns:repeat(3,1fr);}}
.point-card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:24px 22px 22px;height:100%;display:flex;flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  overflow:hidden;
}
.point-card::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:0 3px 3px 0;background:var(--brand);opacity:.85;}
.point-card:hover{transform:translateY(-3px);border-color:#CFDDE5;box-shadow:var(--shadow-2);}
.point-num{
  position:absolute;right:16px;top:6px;font-size:64px;font-weight:700;line-height:1;
  color:rgba(27,92,122,.12);font-variant-numeric:tabular-nums;pointer-events:none;
}
.point-icon{
  width:40px;height:40px;border-radius:12px;background:var(--brand-tint);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.point-icon svg{width:20px;height:20px;stroke:currentColor;}
.point-card h3{font-size:18px;font-weight:600;margin-bottom:10px;color:var(--ink);}
.point-card p{font-size:14px;line-height:1.75;color:var(--ink2);}
.point-link{
  margin-top:auto;padding-top:18px;display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--brand);position:relative;
}
.point-link svg{width:12px;height:12px;stroke:currentColor;transition:transform .2s ease-out;}
.point-link:hover svg{transform:translateX(3px);}

/* ============ 场景演示 ============ */
.scene{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;margin-top:44px;}
@media (min-width:1024px){
  .scene{grid-template-columns:1fr 1fr;gap:56px;}
  .scene.reverse .scene-media{order:2;}
}
.scene-media{border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);aspect-ratio:16/11;background:var(--brand-tint);}
.scene-media img{width:100%;height:100%;object-fit:cover;}
.scene-body h3{font-size:20px;font-weight:600;margin-bottom:12px;}
.scene-body > p{color:var(--ink2);font-size:15px;line-height:1.85;}
.check-list{margin-top:18px;display:grid;gap:11px;}
.check-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--ink2);}
.check-list svg{width:18px;height:18px;stroke:var(--brand);flex-shrink:0;margin-top:3px;}

.step-bar{
  margin-top:52px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);padding:24px 22px;
  display:grid;grid-template-columns:1fr;gap:18px;
}
@media (min-width:768px){.step-bar{grid-template-columns:repeat(3,1fr);gap:10px;align-items:center;}}
.step-item{display:flex;align-items:center;gap:12px;position:relative;}
.step-dot{
  width:32px;height:32px;border-radius:50%;background:var(--brand-soft);color:var(--brand-dark);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;
  font-variant-numeric:tabular-nums;
}
.step-item span{font-size:14px;font-weight:600;color:var(--ink);}
.step-item small{display:block;font-size:12px;color:var(--ink3);font-weight:400;}
@media (min-width:768px){
  .step-item:not(:last-child)::after{
    content:"";position:absolute;right:-6px;top:50%;width:16px;height:1px;background:var(--line);
  }
}

/* ============ 数据带 ============ */
.stat-band{
  background:var(--brand);border-radius:var(--r-lg);padding:30px 22px;color:#fff;
  display:grid;grid-template-columns:1fr 1fr;gap:24px;box-shadow:0 20px 40px -30px rgba(20,71,95,.9);
}
@media (min-width:768px){.stat-band{grid-template-columns:repeat(4,1fr);padding:34px 32px;}}
.stat-item{text-align:left;}
.stat-value{font-size:32px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums;color:#fff;}
.stat-value small{font-size:15px;font-weight:500;margin-left:2px;}
.stat-label{margin-top:8px;font-size:13px;color:rgba(255,255,255,.75);line-height:1.6;}

/* ============ 评价卡 ============ */
.quote-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:36px;}
@media (min-width:768px){.quote-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.quote-grid{grid-template-columns:repeat(3,1fr);}}
.quote-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:26px 22px 22px;height:100%;
  display:flex;flex-direction:column;transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.quote-card:hover{transform:translateY(-3px);border-color:#CFDDE5;box-shadow:var(--shadow-2);}
.quote-mark{
  font-size:40px;line-height:1;color:var(--brand-soft);font-weight:700;height:22px;overflow:hidden;
}
.quote-card p{font-size:14px;line-height:1.85;color:var(--ink2);margin-top:6px;}
.quote-person{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:20px;}
.avatar{
  width:36px;height:36px;border-radius:50%;background:var(--brand-soft);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0;
}
.quote-person strong{display:block;font-size:13px;color:var(--ink);font-weight:600;}
.quote-person em{display:block;font-size:12px;color:var(--ink3);font-style:normal;}

.logo-strip{
  margin-top:34px;display:grid;grid-template-columns:repeat(2,1fr);gap:10px;
}
@media (min-width:640px){.logo-strip{grid-template-columns:repeat(3,1fr);}}
@media (min-width:1024px){.logo-strip{grid-template-columns:repeat(6,1fr);}}
.logo-item{
  display:flex;align-items:center;justify-content:center;padding:14px 8px;border-radius:12px;
  border:1px dashed var(--line);background:rgba(255,255,255,.6);
  font-size:13px;color:var(--ink3);text-align:center;filter:grayscale(100%);opacity:.8;
  transition:opacity .2s,filter .2s,border-color .2s,background .2s,color .2s;
}
.logo-item:hover{filter:none;opacity:1;border-color:#CFDDE5;background:#fff;color:var(--brand-dark);}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:1fr;gap:22px;margin-top:36px;}
@media (min-width:768px){.news-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);color:inherit;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.news-card:hover{transform:translateY(-3px);border-color:#CFDDE5;box-shadow:var(--shadow-2);color:inherit;}
.news-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--brand-tint);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-cat{
  position:absolute;left:12px;top:12px;background:rgba(234,243,247,.95);color:var(--brand-dark);
  font-size:12px;font-weight:600;border-radius:999px;padding:3px 10px;backdrop-filter:blur(4px);
  max-width:calc(100% - 24px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.news-body{padding:18px 18px 16px;display:flex;flex-direction:column;flex:1;}
.news-body h3{
  font-size:17px;font-weight:600;line-height:1.55;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  margin-top:9px;font-size:14px;line-height:1.7;color:var(--ink2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:10px;
  border-top:1px solid var(--line-soft);margin-top:16px;
}
.news-time{display:inline-flex;align-items:center;gap:5px;font-size:13px;color:var(--ink3);}
.news-time svg{width:13px;height:13px;stroke:currentColor;}
.news-arrow{width:26px;height:26px;border-radius:50%;background:var(--brand-tint);color:var(--brand);display:flex;align-items:center;justify-content:center;transition:background .2s,transform .2s;}
.news-arrow svg{width:13px;height:13px;stroke:currentColor;}
.news-card:hover .news-arrow{background:var(--brand-soft);transform:translateX(2px);}

.empty-state{
  margin-top:36px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:52px 24px;text-align:center;
}
.empty-icon{
  width:52px;height:52px;border-radius:16px;background:var(--brand-tint);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;
}
.empty-icon svg{width:24px;height:24px;stroke:currentColor;}
.empty-state h3{font-size:16px;font-weight:600;color:var(--ink);}
.empty-state p{margin-top:8px;font-size:14px;color:var(--ink3);}
.empty-state .btn{margin-top:18px;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:1fr;gap:28px;margin-top:8px;}
@media (min-width:1024px){.faq-layout{grid-template-columns:340px 1fr;gap:56px;align-items:start;}}
.faq-aside{position:static;}
@media (min-width:1024px){.faq-aside{position:sticky;top:96px;}}
.faq-aside h2{margin-bottom:14px;}
.faq-aside p{font-size:15px;line-height:1.85;color:var(--ink2);}
.faq-aside .btn{margin-top:20px;}
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--line-soft);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;padding:18px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color .2s,background .2s;
}
.faq-q:hover{color:var(--brand);background:var(--brand-tint);}
.faq-sign{
  width:22px;height:22px;flex-shrink:0;position:relative;transition:transform .25s ease-out;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;transition:background .2s;
}
.faq-sign::before{left:0;top:10px;width:22px;height:2px;}
.faq-sign::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.is-open .faq-sign{transform:rotate(45deg);color:var(--brand);}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out;}
.faq-a p{padding:0 22px 18px;font-size:15px;line-height:1.85;color:var(--ink2);}

/* ============ 底部 CTA ============ */
.cta-card{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  border-radius:var(--r-lg);padding:38px 24px;color:#fff;
  display:grid;grid-template-columns:1fr;gap:22px;align-items:center;position:relative;overflow:hidden;
}
@media (min-width:1024px){.cta-card{grid-template-columns:1fr auto;padding:46px 48px;gap:40px;}}
.cta-card::after{
  content:"";position:absolute;right:-60px;bottom:-70px;width:220px;height:220px;border-radius:50%;
  background:rgba(255,255,255,.07);pointer-events:none;
}
.cta-card h2{color:#fff;font-size:clamp(22px,2.2vw,30px);font-weight:700;line-height:1.35;}
.cta-card p{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.82);max-width:38em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;}
.cta-actions .btn{width:100%;}
@media (min-width:520px){.cta-actions .btn{width:auto;}}
.cta-actions .btn-light{background:#fff;color:var(--brand-dark);}
.cta-actions .btn-light:hover{background:#EAF3F7;color:var(--brand-dark);transform:translateY(-1px);}
.cta-actions .btn-outline{background:transparent;border-color:rgba(255,255,255,.45);color:#fff;}
.cta-actions .btn-outline:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.7);color:#fff;transform:translateY(-1px);}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);margin-top:56px;padding:52px 0 0;}
@media (min-width:1024px){.site-footer{margin-top:96px;padding-top:64px;}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr .8fr .8fr 1.2fr;gap:40px;}}
.footer-brand .brand-text{font-size:15px;}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.85;color:var(--ink2);max-width:26em;}
.footer-contact{margin-top:16px;display:grid;gap:8px;}
.footer-contact li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink2);}
.footer-contact svg{width:15px;height:15px;stroke:var(--brand);flex-shrink:0;}
.footer-col h4{
  font-size:13px;font-weight:700;color:var(--ink);letter-spacing:1px;margin-bottom:14px;
}
.footer-col ul{display:grid;gap:9px;}
.footer-col a{font-size:14px;color:var(--ink2);line-height:1.6;position:relative;display:inline-block;}
.footer-col a:hover{color:var(--brand);}
.footer-col a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--amber);
  transition:width .25s ease-out;
}
.footer-col a:hover::after{width:100%;}
.footer-form label{display:block;font-size:13px;color:var(--ink2);margin-bottom:6px;font-weight:500;}
.footer-form .field{margin-bottom:12px;}
.footer-form input,.footer-form textarea{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 12px;height:44px;font-size:14px;color:var(--ink);font-family:inherit;
  transition:border-color .2s,box-shadow .2s;
}
.footer-form textarea{height:auto;padding:10px 12px;resize:vertical;min-height:76px;line-height:1.6;}
.footer-form input::placeholder,.footer-form textarea::placeholder{color:#A7B4BC;}
.footer-form input:focus,.footer-form textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,92,122,.14);
}
.footer-form .btn{width:100%;margin-top:4px;}
.footer-form .form-note{margin-top:10px;font-size:12px;color:var(--ink3);line-height:1.6;}
.footer-bottom{
  margin-top:42px;border-top:1px solid var(--line);padding:18px 0 22px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;
}
.footer-bottom p{font-size:12px;color:var(--ink3);line-height:1.7;}
.footer-bottom .sep{color:#C6D3DA;margin:0 6px;}

/* ============ 固定转化条 ============ */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
}
.sticky-inner{
  max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 20px;
}
@media (min-width:1024px){.sticky-inner{padding:8px 32px;}}
.sticky-text{font-size:13px;color:var(--ink2);line-height:1.4;display:none;}
@media (min-width:640px){.sticky-text{display:block;}}
.sticky-text strong{color:var(--brand-dark);font-weight:600;}
.sticky-actions{display:flex;align-items:center;gap:10px;width:100%;justify-content:space-between;}
@media (min-width:640px){.sticky-actions{width:auto;justify-content:flex-end;}}
.sticky-brand{font-size:13px;font-weight:600;color:var(--brand);}
@media (min-width:640px){.sticky-brand{display:none;}}

/* 通用截断 */
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* roulang page: article */
:root{
  --brand:#1B5C7A;
  --brand-deep:#14475F;
  --brand-soft:#EAF3F7;
  --brand-mist:#F4F9FB;
  --amber:#D98A2B;
  --danger:#C2452D;
  --ink:#12222B;
  --ink-2:#4A5C66;
  --ink-3:#7C8C95;
  --line:#DCE6EC;
  --line-2:#CFDDE5;
  --line-soft:#EDF2F5;
  --bg:#F7FAFB;
  --card:#FFFFFF;
  --footer-bg:#F1F5F8;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(18,34,43,.05), 0 6px 18px -12px rgba(18,34,43,.12);
  --sh-2:0 2px 4px rgba(18,34,43,.06), 0 18px 36px -18px rgba(18,34,43,.22);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  padding-bottom:88px;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.2em;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
::selection{background:var(--brand-soft);color:var(--brand-deep);}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:12px;z-index:60;padding:0 20px;}
@media (min-width:1024px){.site-header{padding:0 32px;}}
.nav-shell{
  max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:14px;
  background:var(--card);border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--sh-1);padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:14px;letter-spacing:.02em;
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;font-weight:700;font-size:16px;line-height:1.2;color:var(--brand-deep);}
.brand-sub{font-size:11px;font-weight:500;color:var(--ink-3);margin-top:2px;letter-spacing:0;}
.nav-cards{display:none;align-items:center;gap:6px;flex-wrap:nowrap;}
@media (min-width:1024px){.nav-cards{display:flex;}}
.nav-card{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:8px 10px;border-radius:10px;background:var(--brand-mist);
  font-size:12px;color:var(--ink-2);white-space:nowrap;
  transition:background .2s ease-out,color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.nav-card svg{width:15px;height:15px;stroke:currentColor;flex-shrink:0;}
.nav-card:hover{background:#fff;color:var(--brand);transform:translateY(-1px);box-shadow:var(--sh-1);}
.nav-card.is-active{background:#fff;color:var(--brand-deep);box-shadow:var(--sh-1);}
.nav-card.is-active::before{
  content:"";position:absolute;left:0;top:22%;bottom:22%;width:2px;border-radius:2px;background:var(--brand);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:8px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:42px;padding:0 18px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn svg{width:16px;height:16px;stroke:currentColor;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--line-2);background:var(--brand-mist);transform:translateY(-1px);}
.btn-soft{background:var(--brand-mist);color:var(--brand-deep);border-color:transparent;}
.btn-soft:hover{background:var(--brand-soft);}
.nav-cta{height:40px;padding:0 16px;font-size:13px;}
.icon-btn{
  display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--line);
  border-radius:var(--r-btn);background:#fff;cursor:pointer;transition:background .2s,border-color .2s;
}
.icon-btn svg{width:18px;height:18px;stroke:var(--ink-2);}
.icon-btn:hover{background:var(--brand-mist);border-color:var(--line-2);}
@media (min-width:1024px){.menu-toggle{display:none;}}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:90;display:none;}
.drawer.is-open{display:block;}
.drawer-backdrop{position:absolute;inset:0;background:rgba(18,34,43,.38);}
.drawer-panel{
  position:absolute;left:12px;right:12px;top:12px;background:#fff;border-radius:18px;
  border:1px solid var(--line);box-shadow:var(--sh-2);padding:16px;
  max-height:calc(100vh - 24px);overflow:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-title{font-size:14px;font-weight:700;color:var(--brand-deep);}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.drawer-grid .nav-card{justify-content:flex-start;padding:12px 10px;font-size:12.5px;}
.drawer-foot{margin-top:14px;}
.drawer-foot .btn{width:100%;}

/* ---------- page shell ---------- */
.page-main{padding:32px 0 56px;}
@media (min-width:768px){.page-main{padding:40px 0 72px;}}
@media (min-width:1024px){.page-main{padding:48px 0 96px;}}

.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:6px;
  font-size:13px;color:var(--ink-3);margin-bottom:20px;line-height:1.6;
}
.breadcrumb a{color:var(--ink-2);transition:color .2s;}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:#B7C6CE;}
.breadcrumb .crumb-current{
  color:var(--ink-3);max-width:min(60vw,420px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- article head ---------- */
.article-layout{display:grid;gap:32px;grid-template-columns:minmax(0,1fr);}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:44px;align-items:start;}
}
.article-main{min-width:0;}
.article-head{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:24px;margin-bottom:24px;
}
@media (min-width:768px){.article-head{padding:32px;}}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;background:var(--brand-soft);
  color:var(--brand-deep);font-size:12px;font-weight:600;line-height:1.6;
}
.badge::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--amber);}
.article-title{
  font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.35;
  color:var(--ink);margin:14px 0 16px;word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;
  font-size:13px;color:var(--ink-3);line-height:1.6;
}
.article-meta .dot{width:1px;height:12px;background:var(--line);display:inline-block;}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:5px;}
.article-meta svg{width:14px;height:14px;stroke:var(--ink-3);}
.article-cover{
  margin-top:22px;border-radius:16px;overflow:hidden;background:var(--brand-mist);
  aspect-ratio:16/9;border:1px solid var(--line-soft);
}
.article-cover img{width:100%;height:100%;object-fit:cover;}

/* ---------- article body ---------- */
.article-body-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:24px;
}
@media (min-width:768px){.article-body-card{padding:36px 40px;}}
.article-body{max-width:760px;font-size:16.5px;line-height:1.85;color:var(--ink-2);word-break:break-word;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;font-size:clamp(21px,2.2vw,26px);font-weight:700;color:var(--ink);
  line-height:1.45;margin:40px 0 16px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:19px;font-weight:600;color:var(--ink);line-height:1.5;margin:28px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em;}
.article-body li{margin-bottom:.45em;}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--brand-mist);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;
  color:var(--ink-2);font-style:italic;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:24px auto;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-deep);}
.article-body strong{color:var(--ink);font-weight:600;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;display:block;overflow-x:auto;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top;}
.article-body th{background:var(--brand-mist);color:var(--ink);font-weight:600;}
.article-body code{
  background:var(--line-soft);color:var(--brand-deep);padding:2px 6px;border-radius:6px;font-size:.9em;
  word-break:break-all;
}
.article-body pre{
  background:#12222B;color:#E7EEF2;padding:18px;border-radius:12px;overflow:auto;margin:24px 0;
}
.article-body pre code{background:none;padding:0;color:inherit;}
.article-body figcaption{font-size:12px;color:var(--ink-3);text-align:center;margin-top:8px;}

/* empty state */
.empty-state{
  text-align:center;padding:56px 20px;border-radius:var(--r-lg);
  background:var(--brand-mist);border:1px dashed var(--line);
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;background:#fff;
  border:1px solid var(--line);display:grid;place-items:center;
}
.empty-state .empty-icon svg{width:24px;height:24px;stroke:var(--brand);}
.empty-state h2{font-size:19px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.empty-state p{font-size:14px;color:var(--ink-3);margin-bottom:18px;}

/* ---------- article foot ---------- */
.article-foot{
  margin-top:24px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:24px;
}
@media (min-width:768px){.article-foot{padding:28px 32px;}}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.tag-row .tag-label{font-size:13px;color:var(--ink-3);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:var(--brand-mist);color:var(--brand-deep);font-size:12.5px;transition:background .2s,color .2s;
}
.tag:hover{background:var(--brand-soft);color:var(--brand-deep);}
.foot-divider{height:1px;background:var(--line-soft);margin:24px 0;}
.foot-title{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.foot-title::before{content:"";width:3px;height:15px;border-radius:2px;background:var(--brand);}
.related-grid{display:grid;gap:16px;grid-template-columns:1fr;}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.related-card{
  display:flex;flex-direction:column;height:100%;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.related-card:hover{transform:translateY(-3px);border-color:var(--line-2);box-shadow:var(--sh-2);}
.related-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--brand-mist);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.related-card:hover .related-thumb img{transform:scale(1.03);}
.related-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:6px;flex:1;}
.related-body h4{font-size:15px;font-weight:600;color:var(--ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-date{font-size:12.5px;color:var(--ink-3);margin-top:auto;display:inline-flex;align-items:center;gap:5px;}
.related-date svg{width:13px;height:13px;stroke:var(--ink-3);}
.foot-actions{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- sidebar ---------- */
.side-col{display:none;}
@media (min-width:1024px){.side-col{display:block;position:sticky;top:96px;}}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:20px;margin-bottom:20px;
}
.side-card h3{font-size:14px;font-weight:700;color:var(--brand-deep);margin-bottom:12px;letter-spacing:.02em;}
.side-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:2px;}
.side-list li a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 10px;border-radius:9px;font-size:13.5px;color:var(--ink-2);
  transition:background .2s,color .2s;
}
.side-list li a:hover{background:var(--brand-mist);color:var(--brand-deep);}
.side-list li a svg{width:14px;height:14px;stroke:var(--ink-3);flex-shrink:0;}
.side-list li a:hover svg{stroke:var(--brand);}
.side-note{
  margin-top:6px;padding:14px;border-radius:12px;background:var(--brand-mist);
  font-size:13px;color:var(--ink-2);line-height:1.7;
}
.side-note strong{color:var(--brand-deep);display:block;margin-bottom:4px;font-size:13.5px;}

/* ---------- consult cta ---------- */
.cta-card{
  margin-top:32px;border-radius:var(--r-lg);background:var(--brand-deep);color:#fff;
  padding:28px;box-shadow:var(--sh-2);position:relative;overflow:hidden;
}
@media (min-width:768px){.cta-card{padding:40px;}}
.cta-card::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:rgba(255,255,255,.06);
}
.cta-inner{position:relative;z-index:1;display:grid;gap:24px;grid-template-columns:1fr;}
@media (min-width:900px){.cta-inner{grid-template-columns:1.1fr .9fr;align-items:center;gap:40px;}}
.cta-card h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.4;margin-bottom:10px;color:#fff;}
.cta-card p{font-size:14.5px;color:rgba(255,255,255,.82);line-height:1.8;}
.cta-form{display:grid;gap:10px;background:rgba(255,255,255,.08);padding:18px;border-radius:14px;}
@media (min-width:520px){.cta-form{grid-template-columns:1fr 1fr;}}
.cta-form .field-full{grid-column:1 / -1;}
.cta-form input{
  width:100%;height:44px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.94);color:var(--ink);
  font-size:14px;transition:border-color .2s,box-shadow .2s;
}
.cta-form input::placeholder{color:#93A3AC;}
.cta-form input:focus{outline:none;border-color:var(--amber);box-shadow:0 0 0 3px rgba(217,138,43,.28);}
.cta-form .btn{grid-column:1 / -1;background:var(--amber);color:#26170A;}
.cta-form .btn:hover{background:#C57D22;}
.cta-note{grid-column:1 / -1;font-size:12px;color:rgba(255,255,255,.66);line-height:1.6;}

/* ---------- sticky cta ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-top:1px solid var(--line);padding:10px 0;
}
.sticky-inner{
  max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:12px;justify-content:space-between;
}
@media (min-width:1024px){.sticky-inner{padding:0 32px;}}
.sticky-inner p{font-size:13px;color:var(--ink-2);line-height:1.5;margin:0;flex:1;min-width:0;}
.sticky-inner .btn{height:38px;padding:0 16px;font-size:13px;flex-shrink:0;}

/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);padding:48px 0 0;margin-top:8px;}
.footer-grid{display:grid;gap:28px;grid-template-columns:1fr;}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr .8fr .8fr 1.2fr;gap:40px;}}
.footer-brand p{font-size:13.5px;color:var(--ink-2);line-height:1.8;margin:14px 0 16px;max-width:320px;}
.footer-contact{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px;}
.footer-contact li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);}
.footer-contact svg{width:15px;height:15px;stroke:var(--brand);flex-shrink:0;}
.footer-col h4{font-size:13px;font-weight:700;color:var(--ink);letter-spacing:.08em;margin-bottom:14px;}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px;}
.footer-col ul a{font-size:14px;color:var(--ink-2);transition:color .2s;}
.footer-col ul a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.footer-form form{display:flex;flex-direction:column;gap:10px;}
.field{display:flex;flex-direction:column;gap:5px;}
.field label{font-size:13px;color:var(--ink-2);}
.field input,.field textarea{
  width:100%;padding:10px 12px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:#fff;font-size:14px;color:var(--ink);transition:border-color .2s,box-shadow .2s;
}
.field input{height:44px;}
.field textarea{resize:vertical;min-height:76px;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#9DAAB2;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,92,122,.14);}
.footer-form .btn{width:100%;height:42px;}
.form-note{font-size:12px;color:var(--ink-3);line-height:1.6;margin:0;}
.footer-bottom{
  margin-top:36px;border-top:1px solid var(--line);padding:18px 0 24px;
  display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--ink-3);line-height:1.7;
}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:16px;}
.footer-bottom a{color:var(--ink-3);transition:color .2s;}
.footer-bottom a:hover{color:var(--brand);}

@media (max-width:519px){
  .brand-text{font-size:14.5px;}
  .brand-sub{font-size:10.5px;}
  .nav-cta span{display:none;}
  .nav-cta{width:40px;padding:0;height:40px;}
  .nav-cta svg{width:18px;height:18px;}
  .breadcrumb .crumb-current{max-width:52vw;}
  .sticky-inner p{font-size:12.5px;}
}

/* roulang page: category1 */
:root{
  --brand:#1B5C7A;
  --brand-deep:#14475F;
  --brand-soft:#EAF3F7;
  --brand-mist:#F4F9FB;
  --amber:#D98A2B;
  --alert:#C2452D;
  --ink:#12222B;
  --ink-2:#4A5C66;
  --ink-3:#7C8C95;
  --line:#DCE6EC;
  --line-strong:#CFDDE5;
  --divider:#EDF2F5;
  --page:#F7FAFB;
  --card:#FFFFFF;
  --footer:#F1F5F8;
  --r-card:16px;
  --r-big:24px;
  --r-btn:10px;
  --shadow-sm:0 1px 2px rgba(18,34,43,.05),0 6px 18px -12px rgba(18,34,43,.12);
  --shadow-lg:0 2px 4px rgba(18,34,43,.06),0 18px 36px -18px rgba(18,34,43,.22);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--page);
  letter-spacing:0;
  padding-bottom:96px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color .2s ease-out}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:4px}
body.is-locked{overflow:hidden}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}

/* ===== 头部导航 ===== */
.site-header{position:sticky;top:10px;z-index:60;padding:0 12px}
.nav-shell{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:14px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  padding:10px 14px;
  box-shadow:var(--shadow-sm);
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--brand);font-weight:700;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;
  font-size:13px;font-weight:700;letter-spacing:.05em;
}
.brand-text{display:flex;flex-direction:column;font-size:15px;line-height:1.25;letter-spacing:0}
.brand-sub{font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.02em;margin-top:2px}
.nav-cards{display:none;flex:1 1 auto;align-items:center;justify-content:center;gap:6px;flex-wrap:wrap}
.nav-card{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 11px;border-radius:10px;
  background:var(--brand-mist);
  color:var(--ink-2);
  font-size:12.5px;font-weight:500;line-height:1.4;
  border-left:2px solid transparent;
  transition:background .2s ease-out,color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
  white-space:nowrap;
}
.nav-card svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.nav-card:hover{background:var(--card);color:var(--brand);transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.nav-card.is-active{background:var(--card);color:var(--brand);border-left:2px solid var(--brand);box-shadow:var(--shadow-sm)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:8px;flex:0 0 auto}
.nav-cta{display:none}
.icon-btn{
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:var(--card);color:var(--ink-2);
  display:grid;place-items:center;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.icon-btn svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.icon-btn:hover{background:var(--brand-mist);color:var(--brand);border-color:var(--line-strong)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;line-height:1.4;
  border:1px solid transparent;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.btn-ghost{background:var(--card);color:var(--brand);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-mist);border-color:var(--line-strong);transform:translateY(-1px)}
.btn-light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.35)}
.btn-light:hover{background:rgba(255,255,255,.22);transform:translateY(-1px)}
.btn-block{width:100%}

@media(min-width:1024px){
  .nav-cards{display:flex}
  .menu-toggle{display:none}
  .nav-cta{display:inline-flex}
}
@media(max-width:420px){
  .brand-text{font-size:13px}
  .brand-sub{display:none}
  .brand-mark{width:34px;height:34px;font-size:12px}
}

/* ===== 移动抽屉 ===== */
.drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(18,34,43,.40);
  display:none;
  padding:16px;
  align-items:flex-start;
  justify-content:center;
}
.drawer.is-open{display:flex}
.drawer-panel{
  width:100%;max-width:440px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  padding:18px;
  box-shadow:var(--shadow-lg);
  margin-top:6px;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-title{font-size:13px;font-weight:600;color:var(--ink-3);letter-spacing:.08em}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.drawer-grid .nav-card{background:var(--brand-mist);padding:12px 10px;font-size:13px;border-radius:12px;white-space:normal}
.drawer-grid .nav-card.is-active{border-left:2px solid var(--brand)}

/* ===== 面包屑 ===== */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);
  padding:26px 0 0;
}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#B9C7D0}
.crumb .now{color:var(--ink-2);font-weight:500}

/* ===== 板块间距 ===== */
.section{padding:56px 0 0}
@media(min-width:768px){.section{padding-top:72px}}
@media(min-width:1024px){.section{padding-top:88px}}

.sec-head{max-width:760px;margin-bottom:28px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);
  padding:6px 14px;border-radius:999px;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--amber)}
h1.hero-title{
  font-size:clamp(30px,3.6vw,44px);
  line-height:1.25;font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
}
h2.sec-title{font-size:clamp(23px,2.4vw,31px);line-height:1.3;font-weight:700;color:var(--ink)}
h3.card-title{font-size:18px;line-height:1.45;font-weight:600;color:var(--ink)}
.lead{font-size:16px;color:var(--ink-2);line-height:1.85}
.muted{font-size:14px;color:var(--ink-3);line-height:1.7}

/* ===== Hero 小卡 ===== */
.page-hero{
  position:relative;
  margin-top:24px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-big);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;
  background:var(--brand-mist);border-radius:50%;
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;top:0;height:100%;
  background-image:linear-gradient(to right,rgba(220,230,236,.35) 1px,transparent 1px),linear-gradient(to bottom,rgba(220,230,236,.35) 1px,transparent 1px);
  background-size:44px 44px;
  opacity:.35;
  pointer-events:none;
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.55),transparent 72%);
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.55),transparent 72%);
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;gap:28px;
  padding:28px 22px 26px;
}
@media(min-width:768px){.hero-inner{padding:36px 32px 34px}}
@media(min-width:1024px){.hero-inner{grid-template-columns:1.25fr .85fr;align-items:center;gap:36px;padding:44px 40px 42px}}
.hero-copy .lead{margin-top:16px;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-actions .btn{flex:1 1 auto;min-width:160px}
@media(min-width:520px){.hero-actions .btn{flex:0 0 auto}}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;color:var(--ink-2);
  background:var(--brand-mist);
  border:1px solid var(--divider);
  padding:5px 12px;border-radius:999px;
}
.tag svg{width:14px;height:14px;stroke:var(--brand);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.hero-media{position:relative}
.media-frame{
  position:relative;overflow:hidden;border-radius:20px;
  border:1px solid var(--line);
  background:var(--brand-mist);
  aspect-ratio:16/11;
  box-shadow:var(--shadow-sm);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.float-card{
  position:absolute;left:-6px;bottom:-14px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px 14px;
  box-shadow:var(--shadow-lg);
  max-width:230px;
}
.float-card .fc-label{
  display:inline-block;font-size:11px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:2px 9px;margin-bottom:6px;
}
.float-card p{font-size:12.5px;line-height:1.65;color:var(--ink-2)}
@media(max-width:520px){.float-card{position:static;margin-top:14px;max-width:none}}

/* ===== 图文交替 ===== */
.split{
  display:grid;gap:26px;align-items:center;
  margin-top:22px;
}
@media(min-width:900px){
  .split{grid-template-columns:1fr 1fr;gap:44px}
  .split .split-media{order:1}
  .split .split-copy{order:2}
  .split.reverse .split-media{order:2}
  .split.reverse .split-copy{order:1}
}
.split-media{
  position:relative;overflow:hidden;
  border-radius:20px;border:1px solid var(--line);
  background:var(--brand-mist);
  aspect-ratio:16/11;
  box-shadow:var(--shadow-sm);
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.split:hover .split-media img{transform:scale(1.02)}
.split-copy .num{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;color:var(--amber);
  font-variant-numeric:tabular-nums;
  margin-bottom:12px;
  letter-spacing:.06em;
}
.split-copy h3{font-size:21px;line-height:1.4;font-weight:700;color:var(--ink);margin-bottom:14px}
.split-copy p{font-size:15.5px;line-height:1.85;color:var(--ink-2);margin-bottom:12px}
.check-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.check-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;color:var(--ink-2)}
.check-list svg{width:18px;height:18px;flex:0 0 auto;margin-top:3px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* ===== 流程条 ===== */
.steps{
  margin-top:36px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-big);
  padding:24px 22px;
  box-shadow:var(--shadow-sm);
}
.steps-head{display:flex;align-items:center;gap:10px;margin-bottom:20px}
.steps-head span{font-size:13px;font-weight:600;color:var(--ink-3);letter-spacing:.08em}
.steps-track{display:grid;gap:16px}
@media(min-width:768px){.steps-track{grid-template-columns:repeat(3,1fr);gap:0}}
.step{display:flex;gap:14px;align-items:flex-start;padding-right:8px}
@media(min-width:768px){.step{padding-right:24px;position:relative}.step:not(:last-child)::after{content:"";position:absolute;right:0;top:16px;height:1px;width:24px;background:var(--line)}}
.step-dot{
  flex:0 0 auto;width:34px;height:34px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.step p{font-size:14.5px;line-height:1.7;color:var(--ink-2)}
.step strong{display:block;font-size:15px;color:var(--ink);font-weight:600;margin-bottom:2px}

/* ===== 三枚要点卡 ===== */
.point-grid{display:grid;gap:20px;margin-top:24px}
@media(min-width:640px){.point-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.point-grid{grid-template-columns:repeat(3,1fr);gap:22px}}
.point-card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;height:100%;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.point-card:nth-child(2){border-left-color:var(--amber)}
.point-card:hover{transform:translateY(-3px);border-color:var(--line-strong);border-left-color:var(--brand);box-shadow:var(--shadow-lg)}
.point-card .big-num{
  font-size:40px;font-weight:700;line-height:1;color:var(--brand);
  opacity:.16;font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.point-card .ico{
  width:40px;height:40px;border-radius:11px;
  background:var(--brand-mist);color:var(--brand);
  display:grid;place-items:center;margin-bottom:14px;
}
.point-card .ico svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.point-card h3{margin-bottom:8px}
.point-card p{font-size:14px;line-height:1.75;color:var(--ink-2)}
.card-link{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:auto;padding-top:16px;
  font-size:13.5px;font-weight:600;color:var(--brand);
}
.card-link svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s ease-out}
.card-link:hover{color:var(--brand-deep)}
.card-link:hover svg{transform:translateX(3px)}

/* ===== FAQ ===== */
.faq-wrap{display:grid;gap:24px;margin-top:24px}
@media(min-width:1024px){.faq-wrap{grid-template-columns:.7fr 1.3fr;gap:44px;align-items:start}}
.faq-aside h2{margin-bottom:14px}
.faq-aside p{font-size:14.5px;line-height:1.8;color:var(--ink-2)}
.faq-aside .btn{margin-top:20px}
.faq-list{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--divider)}
.faq-item:last-child{border-bottom:none}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--ink);
  cursor:pointer;list-style:none;
  transition:background .2s ease-out,color .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--brand-mist);color:var(--brand)}
.faq-item summary .plus{
  flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .25s ease-out;
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-3);border-radius:2px;
  transform:translate(-50%,-50%);
  transition:background .2s ease-out;
}
.faq-item summary .plus::before{width:14px;height:2px}
.faq-item summary .plus::after{width:2px;height:14px}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary .plus{transform:rotate(45deg)}
.faq-item[open] summary .plus::before,
.faq-item[open] summary .plus::after{background:var(--brand)}
.faq-answer{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ===== 底部 CTA ===== */
.cta-band{
  margin-top:56px;
  background:var(--brand-deep);
  border-radius:var(--r-big);
  padding:34px 24px;
  display:grid;gap:22px;
  position:relative;overflow:hidden;
}
@media(min-width:768px){.cta-band{padding:44px 40px;grid-template-columns:1.4fr .6fr;align-items:center;gap:32px}}
.cta-band::before{
  content:"";position:absolute;right:-60px;bottom:-80px;width:240px;height:240px;
  border-radius:50%;background:rgba(255,255,255,.06);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;line-height:1.8;margin-top:12px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn{flex:1 1 auto;min-width:150px}
@media(min-width:768px){.cta-actions{justify-content:flex-end}.cta-actions .btn{flex:0 0 auto}}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--footer);
  border-top:1px solid var(--line);
  margin-top:64px;
  color:var(--ink-2);
}
.footer-grid{
  display:grid;gap:32px;
  padding:48px 0 36px;
}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px}}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:320px}
.footer-contact{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.footer-contact li{display:flex;gap:9px;font-size:13.5px;color:var(--ink-2);align-items:flex-start;line-height:1.65}
.footer-contact svg{width:16px;height:16px;flex:0 0 auto;margin-top:3px;stroke:var(--brand);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.footer-col h4{font-size:12.5px;font-weight:700;color:var(--ink-3);letter-spacing:.12em;margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul li a{font-size:14px;color:var(--ink-2)}
.footer-col ul li a:hover{color:var(--brand)}
.footer-form .field{margin-bottom:12px}
.field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px}
.field input,.field textarea{
  width:100%;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  padding:11px 13px;
  font-size:14px;color:var(--ink);
  line-height:1.5;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
  font-family:inherit;
}
.field input{height:44px}
.field textarea{resize:vertical;min-height:82px}
.field input::placeholder,.field textarea::placeholder{color:#A6B4BC}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(27,92,122,.14);
}
.form-note{font-size:12.5px;color:var(--ink-3);margin-top:10px;line-height:1.65}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:18px 0 26px;
  display:flex;flex-wrap:wrap;gap:8px 20px;
  align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--ink-3);
}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:16px}
.footer-bottom a{color:var(--ink-3)}
.footer-bottom a:hover{color:var(--brand)}

/* ===== 固定转化条 ===== */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
}
.sticky-inner{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:12px;justify-content:space-between;
  padding:10px 20px;
}
@media(min-width:1024px){.sticky-inner{padding:10px 32px}}
.sticky-text{
  font-size:13.5px;color:var(--ink-2);line-height:1.5;
  display:none;
}
@media(min-width:520px){.sticky-text{display:block}}
.sticky-text strong{color:var(--brand);font-weight:600}
.sticky-inner .btn{padding:10px 18px;font-size:13.5px;flex:0 0 auto}
.sticky-inner .sticky-brand{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand)}
.sticky-inner .sticky-brand .brand-mark{width:28px;height:28px;border-radius:8px;font-size:10px}
@media(min-width:520px){.sticky-inner .sticky-brand{display:none}}

/* roulang page: category2 */
:root{
  --brand:#1B5C7A;
  --brand-900:#14475F;
  --brand-100:#EAF3F7;
  --brand-50:#F4F9FB;
  --accent:#D98A2B;
  --ink:#12222B;
  --ink-2:#4A5C66;
  --ink-3:#7C8C95;
  --line:#DCE6EC;
  --line-2:#EDF2F5;
  --bg:#F7FAFB;
  --card:#FFFFFF;
  --r-card:16px;
  --r-lg:20px;
  --r-xl:24px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(18,34,43,.05),0 6px 18px -12px rgba(18,34,43,.12);
  --shadow-2:0 2px 4px rgba(18,34,43,.06),0 18px 36px -18px rgba(18,34,43,.22);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink);
  background:var(--bg);
  padding-bottom:86px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
input,textarea{font:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
svg{fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:70;padding:12px 0 0}
.nav-shell{
  width:100%;max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:14px;
  padding:10px 14px;background:var(--card);
  border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow-1);
}
@media (min-width:1024px){.nav-shell{padding:10px 16px}}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--brand);font-weight:700;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:var(--brand);color:#fff;display:grid;place-items:center;
  font-size:13px;font-weight:700;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;font-size:15px}
.brand-sub{font-size:11px;font-weight:500;color:var(--ink-3);margin-top:2px;letter-spacing:0}
.nav-cards{display:none;flex:1;gap:6px;justify-content:center;flex-wrap:wrap}
@media (min-width:1024px){.nav-cards{display:flex}}
.nav-card{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 10px;border-radius:10px;font-size:12px;
  background:var(--brand-50);color:var(--ink-2);
  border:1px solid transparent;transition:all .2s ease-out;white-space:nowrap;
}
.nav-card svg{width:16px;height:16px;flex:0 0 16px}
.nav-card:hover{background:#fff;border-color:var(--line);color:var(--brand);transform:translateY(-1px)}
.nav-card.is-active{
  background:#fff;color:var(--brand);border-color:var(--line);
  box-shadow:inset 2px 0 0 var(--brand);font-weight:600;
}
.nav-right{display:flex;align-items:center;gap:8px;margin-left:auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 16px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;border:1px solid transparent;
  transition:all .2s ease-out;text-align:center;
}
.btn svg{width:16px;height:16px;flex:0 0 16px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-900);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-50);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--brand-900);border-color:#fff}
.btn-light:hover{background:var(--brand-100);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);transform:translateY(-1px)}
.nav-cta{font-size:13px;padding:9px 14px;display:none}
@media (min-width:768px){.nav-cta{display:inline-flex}}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);display:grid;place-items:center;transition:all .2s ease-out;
}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{color:var(--brand);border-color:var(--brand)}
@media (min-width:1024px){.menu-toggle{display:none}}

/* 移动抽屉 */
.mobile-drawer{position:fixed;inset:0;z-index:90;display:none;background:rgba(18,34,43,.45)}
.mobile-drawer.is-open{display:block}
.drawer-panel{
  position:absolute;left:12px;right:12px;top:12px;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:18px;max-height:calc(100vh - 24px);overflow:auto;box-shadow:var(--shadow-2);
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-title{font-size:14px;font-weight:700;color:var(--ink)}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.drawer-grid .nav-card{justify-content:flex-start;padding:12px;font-size:13px;background:var(--brand-50);white-space:normal}
.drawer-cta{margin-top:14px;width:100%}

/* ---------- 页面头 ---------- */
.page-head{padding:28px 0 8px}
.breadcrumb{font-size:13px;color:var(--ink-3);display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:20px}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{color:var(--line);font-size:12px}
.page-head-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:start}
@media (min-width:1024px){.page-head-grid{grid-template-columns:1.35fr 1fr;gap:32px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;color:var(--brand);
  background:var(--brand-100);border-radius:999px;padding:6px 12px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
h1{
  font-size:clamp(28px,3.4vw,42px);line-height:1.28;font-weight:700;
  letter-spacing:-.01em;color:var(--ink);
}
.lede{margin-top:16px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:56ch}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.head-actions .btn{flex:1 1 180px}
@media (min-width:640px){.head-actions .btn{flex:0 0 auto}}
.head-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:14px;box-shadow:var(--shadow-1);
}
.head-figure{border-radius:14px;overflow:hidden;aspect-ratio:16/11;background:var(--brand-50)}
.head-figure img{width:100%;height:100%;object-fit:cover}
.head-card ul{margin-top:14px;display:grid;gap:10px}
.head-card li{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-2);line-height:1.7}
.head-card li svg{width:16px;height:16px;flex:0 0 16px;color:var(--brand);margin-top:3px}

/* ---------- 主体两栏 ---------- */
.section{margin-top:56px}
@media (min-width:768px){.section{margin-top:72px}}
@media (min-width:1024px){.section{margin-top:88px}}
.layout{display:grid;grid-template-columns:1fr;gap:24px;align-items:start}
@media (min-width:1024px){.layout{grid-template-columns:296px 1fr;gap:28px}}
.toc-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-1);
}
@media (min-width:1024px){
  .toc-card{position:sticky;top:96px}
}
.toc-card h2{font-size:14px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.toc-sub{font-size:12px;color:var(--ink-3);margin-top:6px;line-height:1.7}
.toc-list{margin-top:16px;display:grid;gap:4px}
.toc-list a{
  display:flex;align-items:center;gap:8px;
  padding:9px 12px;border-radius:10px;font-size:13px;color:var(--ink-2);
  border-left:2px solid transparent;transition:all .2s ease-out;
}
.toc-list a:hover{background:var(--brand-50);color:var(--brand)}
.toc-list a.is-current{
  background:var(--brand-50);color:var(--brand);font-weight:600;
  border-left-color:var(--brand);
}
.toc-list .num{font-variant-numeric:tabular-nums;font-size:12px;color:var(--ink-3)}
.toc-list a.is-current .num{color:var(--brand)}
.toc-divider{height:1px;background:var(--line-2);margin:16px 0}
.toc-links{display:grid;gap:6px}
.toc-links a{font-size:13px;color:var(--ink-2);display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 2px;transition:color .2s ease-out}
.toc-links a:hover{color:var(--brand)}
.toc-links a svg{width:14px;height:14px;color:var(--ink-3)}
.toc-links a:hover svg{color:var(--brand)}

.content-stack{display:grid;gap:20px}
.content-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);transition:all .2s ease-out;
  scroll-margin-top:100px;
}
@media (min-width:768px){.content-card{padding:28px}}
.content-card:hover{border-color:#CFDDE5;box-shadow:var(--shadow-2);transform:translateY(-3px)}
.card-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.card-index{
  font-variant-numeric:tabular-nums;font-size:13px;font-weight:700;color:var(--brand);
  background:var(--brand-100);border-radius:8px;padding:4px 9px;flex:0 0 auto;
}
.content-card h3{font-size:18px;font-weight:600;line-height:1.5;color:var(--ink)}
.content-card p{font-size:15px;line-height:1.85;color:var(--ink-2);margin-top:12px}
.content-card p:first-of-type{margin-top:0}
.card-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:13px;font-weight:600;color:var(--brand);
}
.card-link svg{width:14px;height:14px;transition:transform .2s ease-out}
.card-link:hover{color:var(--brand-900)}
.card-link:hover svg{transform:translateX(3px)}
.tip-box{
  margin-top:16px;background:var(--brand-50);border-left:3px solid var(--brand);
  border-radius:10px;padding:14px 16px;font-size:13px;line-height:1.8;color:var(--ink-2);
}
.tip-box strong{color:var(--brand);font-weight:600}

/* ---------- 自查清单 ---------- */
.check-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:24px}
@media (min-width:640px){.check-grid{grid-template-columns:1fr 1fr}}
.check-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px;display:flex;gap:12px;align-items:flex-start;box-shadow:var(--shadow-1);
  transition:all .2s ease-out;
}
.check-item:hover{border-color:#CFDDE5;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.check-item svg{width:20px;height:20px;flex:0 0 20px;color:var(--brand);margin-top:2px}
.check-item h4{font-size:15px;font-weight:600;color:var(--ink);line-height:1.6}
.check-item p{font-size:13px;line-height:1.75;color:var(--ink-3);margin-top:6px}

/* ---------- FAQ ---------- */
.faq-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line-2)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary .plus{
  flex:0 0 auto;width:22px;height:22px;display:grid;place-items:center;
  color:var(--ink-3);transition:transform .25s ease-out,color .2s ease-out;
}
.faq-item summary .plus svg{width:16px;height:16px}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary .plus{transform:rotate(45deg);color:var(--brand)}
.faq-answer{padding:0 22px 18px;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-900);border-radius:var(--r-xl);padding:32px 24px;color:#fff;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  box-shadow:var(--shadow-2);
}
@media (min-width:768px){.cta-band{padding:40px 36px}}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);font-weight:700;line-height:1.4;color:#fff}
.cta-band p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.78);margin-top:10px;max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn{flex:1 1 160px}
@media (min-width:640px){.cta-actions .btn{flex:0 0 auto}}

/* ---------- 页脚 ---------- */
.site-footer{background:#F1F5F8;border-top:1px solid var(--line);margin-top:72px;padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px}}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:13px;line-height:1.85;color:var(--ink-2);max-width:34ch}
.footer-contact{margin-top:16px;display:grid;gap:10px}
.footer-contact li{display:flex;align-items:flex-start;gap:8px;font-size:13px;color:var(--ink-2);line-height:1.7}
.footer-contact svg{width:16px;height:16px;flex:0 0 16px;color:var(--brand);margin-top:3px}
.footer-col h4{font-size:13px;font-weight:700;color:var(--ink);letter-spacing:.08em;margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{font-size:14px;color:var(--ink-2);transition:color .2s ease-out}
.footer-col ul a:hover{color:var(--brand)}
.footer-form .field{margin-bottom:12px}
.footer-form label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px}
.footer-form input,.footer-form textarea{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:0 12px;height:44px;font-size:14px;color:var(--ink);transition:all .2s ease-out;
}
.footer-form textarea{height:auto;padding:10px 12px;line-height:1.7;resize:vertical}
.footer-form input::placeholder,.footer-form textarea::placeholder{color:var(--ink-3)}
.footer-form input:focus,.footer-form textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,92,122,.14);
}
.footer-form .btn{width:100%;margin-top:4px}
.form-note{font-size:12px;color:var(--ink-3);margin-top:10px;line-height:1.7}
.form-tip{font-size:13px;color:var(--brand);margin-top:10px;min-height:20px}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:var(--ink-3);line-height:1.7;
}
.footer-bottom a{color:var(--ink-3)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 固定转化条 ---------- */
.quick-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
}
.quick-bar .inner{
  max-width:1200px;margin:0 auto;padding:10px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
@media (min-width:1024px){.quick-bar .inner{padding:10px 32px}}
.quick-bar p{margin:0;font-size:13px;color:var(--ink-2);line-height:1.5}
.quick-bar p strong{color:var(--ink);font-weight:600}
.quick-bar .btn{font-size:13px;padding:9px 16px;flex:0 0 auto}
@media (max-width:519px){
  .quick-bar p{font-size:12px;max-width:60%}
}

/* roulang page: category3 */
:root{
    --brand:#1B5C7A;
    --brand-deep:#14475F;
    --brand-soft:#EAF3F7;
    --brand-tint:#F4F9FB;
    --amber:#D98A2B;
    --ink:#12222B;
    --ink-2:#4A5C66;
    --ink-3:#7C8C95;
    --line:#DCE6EC;
    --line-soft:#EDF2F5;
    --page:#F7FAFB;
    --card:#FFFFFF;
    --radius-card:16px;
    --radius-lg:22px;
    --radius-btn:10px;
    --shadow-1:0 1px 2px rgba(18,34,43,.05),0 6px 18px -12px rgba(18,34,43,.12);
    --shadow-2:0 2px 4px rgba(18,34,43,.06),0 18px 36px -18px rgba(18,34,43,.22);
    --container:1200px;
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
    background:var(--page);
    color:var(--ink);
    font-size:16px;
    line-height:1.8;
    letter-spacing:0;
    padding-bottom:78px;
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none}
  button{font:inherit;cursor:pointer;background:none;border:0;color:inherit}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}

  h1{font-size:clamp(30px,3.6vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
  h2{font-size:clamp(24px,2.4vw,32px);line-height:1.35;font-weight:700;letter-spacing:-.01em}
  h3{font-size:20px;line-height:1.45;font-weight:600}
  h4{font-size:17px;line-height:1.5;font-weight:600}

  :focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
  @media (min-width:1024px){.container{padding:0 32px}}

  .section{padding:56px 0}
  @media (min-width:768px){.section{padding:72px 0}}
  @media (min-width:1024px){.section{padding:96px 0}}

  .sec-head{margin-bottom:28px;max-width:760px}
  .sec-head .sec-kicker{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;font-weight:600;color:var(--brand);
    background:var(--brand-soft);border-radius:999px;padding:5px 12px;margin-bottom:14px;
  }
  .sec-head p{margin-top:12px;color:var(--ink-2);font-size:15px;line-height:1.75}

  /* ============ 顶部导航 ============ */
  .site-header{position:sticky;top:12px;z-index:60;padding:0 16px}
  .nav-shell{
    max-width:var(--container);margin:0 auto;
    display:flex;align-items:center;gap:18px;
    background:var(--card);border:1px solid var(--line);border-radius:18px;
    padding:10px 14px;box-shadow:var(--shadow-1);
  }
  .brand{display:inline-flex;align-items:center;gap:10px;flex:none}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;flex:none;
    background:var(--brand);color:#fff;
    display:grid;place-items:center;font-size:13.5px;font-weight:700;letter-spacing:.04em;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.2;font-weight:700;color:var(--brand);font-size:15.5px}
  .brand-sub{font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.02em;margin-top:3px}

  .nav-cards{display:none;flex:1;align-items:center;justify-content:center;gap:6px}
  .nav-card{
    display:inline-flex;align-items:center;gap:6px;
    padding:8px 11px;border-radius:10px;
    background:var(--brand-tint);border:1px solid transparent;
    font-size:12.5px;color:var(--ink-2);white-space:nowrap;
    transition:transform .2s var(--ease),background .2s,border-color .2s,color .2s;
  }
  .nav-card svg{width:16px;height:16px;flex:none;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .nav-card:hover{background:#fff;border-color:var(--line);transform:translateY(-1px);color:var(--brand)}
  .nav-card.is-active{
    background:#fff;border-color:var(--line);color:var(--brand);font-weight:600;
    box-shadow:inset 2px 0 0 var(--brand);
  }

  .nav-right{display:flex;align-items:center;gap:8px;margin-left:auto}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:10px 18px;border-radius:var(--radius-btn);
    font-size:14px;font-weight:600;line-height:1.4;
    border:1px solid transparent;
    transition:background .2s var(--ease),color .2s,border-color .2s,transform .2s,box-shadow .2s;
  }
  .btn svg{width:16px;height:16px;flex:none;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
  .btn-primary{background:var(--brand);color:#fff}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
  .btn-light{background:#fff;color:var(--brand-deep)}
  .btn-light:hover{background:var(--brand-soft);transform:translateY(-1px)}
  .btn-outline-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
  .btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.1);transform:translateY(-1px)}

  .icon-btn{
    width:40px;height:40px;border-radius:10px;flex:none;
    border:1px solid var(--line);background:#fff;color:var(--ink-2);
    display:inline-flex;align-items:center;justify-content:center;
    transition:border-color .2s,color .2s,transform .2s;
  }
  .icon-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .icon-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
  .menu-toggle{display:inline-flex}
  .nav-cta{display:none}

  @media (min-width:1024px){
    .nav-cards{display:flex}
    .menu-toggle{display:none}
    .nav-cta{display:inline-flex}
  }

  /* ============ 移动抽屉 ============ */
  .drawer{position:fixed;inset:0;z-index:90;display:none}
  .drawer.is-open{display:block}
  .drawer-backdrop{position:absolute;inset:0;background:rgba(18,34,43,.45)}
  .drawer-panel{
    position:relative;margin:12px;background:#fff;border:1px solid var(--line);
    border-radius:18px;padding:16px;box-shadow:var(--shadow-2);
    max-height:calc(100vh - 24px);overflow:auto;
  }
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
  .drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
  .drawer-grid a{
    display:flex;align-items:center;gap:8px;
    background:var(--brand-tint);border:1px solid transparent;border-radius:12px;
    padding:12px;font-size:13px;color:var(--ink-2);min-height:52px;
    transition:background .2s,border-color .2s,color .2s;
  }
  .drawer-grid a svg{width:16px;height:16px;flex:none;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .drawer-grid a:hover{background:#fff;border-color:var(--line);color:var(--brand)}
  .drawer-grid a.is-active{background:#fff;border-color:var(--line);color:var(--brand);font-weight:600;box-shadow:inset 2px 0 0 var(--brand)}

  /* ============ 面包屑 ============ */
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);padding:22px 0 0}
  .crumb a{color:var(--ink-2);transition:color .2s}
  .crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
  .crumb .sep{color:#B7C6CF}

  /* ============ Hero ============ */
  .page-hero{
    background-image:
      linear-gradient(180deg,rgba(247,250,251,.94),rgba(247,250,251,.99)),
      url("/assets/images/backpic/back-1.png");
    background-size:cover;
    background-position:center;
    padding-bottom:8px;
  }
  .hero-card{
    display:grid;gap:32px;grid-template-columns:1fr;
    padding:32px 0 8px;
  }
  @media (min-width:1024px){
    .hero-card{grid-template-columns:1.35fr 1fr;gap:48px;align-items:center;padding:44px 0 12px}
  }
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    background:#fff;border:1px solid var(--line);border-radius:999px;
    padding:6px 14px;font-size:12.5px;font-weight:600;color:var(--brand);
    box-shadow:var(--shadow-1);
  }
  .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--amber);flex:none}
  .hero-card h1{margin-top:18px;max-width:16em}
  .hero-lead{margin-top:16px;font-size:16px;line-height:1.85;color:var(--ink-2);max-width:34em}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  .hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px}
  .hero-meta li{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-2)}
  .hero-meta svg{width:16px;height:16px;flex:none;stroke:var(--brand);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

  .hero-media{
    position:relative;border-radius:20px;overflow:hidden;
    border:1px solid var(--line);box-shadow:var(--shadow-2);
    aspect-ratio:4/3;background:var(--brand-tint);
  }
  .hero-media img{width:100%;height:100%;object-fit:cover}
  .media-badge{
    position:absolute;left:16px;bottom:16px;
    background:rgba(255,255,255,.94);border:1px solid var(--line);
    border-radius:12px;padding:10px 14px;box-shadow:var(--shadow-1);
    display:flex;align-items:center;gap:10px;
  }
  .media-badge svg{width:18px;height:18px;flex:none;stroke:var(--brand);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .media-badge span{font-size:12.5px;font-weight:600;color:var(--ink)}

  /* ============ 入口网格 ============ */
  .grid-3{display:grid;gap:20px;grid-template-columns:1fr}
  @media (min-width:640px){.grid-3{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr);gap:24px}}

  .entry-card{
    display:flex;flex-direction:column;gap:14px;height:100%;
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px;box-shadow:var(--shadow-1);
    transition:transform .2s var(--ease),border-color .2s,box-shadow .2s;
  }
  .entry-card:hover{transform:translateY(-3px);border-color:#CFDDE5;box-shadow:var(--shadow-2)}
  .entry-icon{
    width:44px;height:44px;border-radius:12px;flex:none;
    background:var(--brand-soft);color:var(--brand);
    display:grid;place-items:center;
  }
  .entry-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .entry-card h3{font-size:18px;color:var(--ink)}
  .entry-card p{font-size:14px;line-height:1.7;color:var(--ink-2)}
  .entry-link{
    margin-top:auto;display:inline-flex;align-items:center;gap:6px;
    font-size:13.5px;font-weight:600;color:var(--brand);
    transition:gap .2s var(--ease),color .2s;
  }
  .entry-link svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .entry-card:hover .entry-link{gap:11px;color:var(--brand-deep)}

  /* ============ 权益对照 ============ */
  .compare-card{
    background:var(--card);border:1px solid var(--line);
    border-radius:var(--radius-lg);box-shadow:var(--shadow-1);overflow:hidden;
  }
  .compare-row{
    display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:12px;
    padding:16px 24px;border-top:1px solid var(--line-soft);
    font-size:14.5px;align-items:center;
  }
  .compare-row:first-child{border-top:0}
  .compare-row.head{background:var(--brand-tint);font-weight:600;color:var(--brand-deep);font-size:13.5px}
  .compare-row .name{font-weight:600;color:var(--ink)}
  .compare-row .cell{color:var(--ink-2);font-size:14px}
  .compare-row .cell.yes{color:var(--brand-deep);font-weight:600}
  .compare-row .cell.no{color:var(--ink-3)}
  .compare-note{
    padding:16px 24px;background:var(--brand-tint);border-top:1px solid var(--line-soft);
    font-size:13.5px;color:var(--ink-2);
  }
  @media (max-width:767px){
    .compare-row{grid-template-columns:1fr;gap:6px;padding:18px 20px}
    .compare-row.head{display:none}
    .compare-row .name{font-size:16px;color:var(--brand)}
    .compare-row .cell::before{content:attr(data-label) "：";color:var(--ink-3);font-weight:500}
  }

  /* ============ 差异原因 ============ */
  .split{display:grid;gap:28px;grid-template-columns:1fr}
  @media (min-width:1024px){.split{grid-template-columns:.8fr 1.2fr;gap:48px}}
  .sticky-side{align-self:start}
  @media (min-width:1024px){.sticky-side{position:sticky;top:100px}}
  .sticky-side h2{margin-bottom:14px}
  .sticky-side p{color:var(--ink-2);font-size:15px;line-height:1.8}
  .sticky-side .side-link{
    display:inline-flex;align-items:center;gap:7px;margin-top:18px;
    font-size:14px;font-weight:600;color:var(--brand);
  }
  .sticky-side .side-link svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

  .diff-item{
    display:flex;gap:14px;align-items:flex-start;
    background:var(--card);border:1px solid var(--line);border-radius:14px;
    padding:20px 22px;box-shadow:var(--shadow-1);
    transition:transform .2s var(--ease),border-color .2s,box-shadow .2s;
  }
  .diff-item + .diff-item{margin-top:14px}
  .diff-item:hover{transform:translateY(-2px);border-color:#CFDDE5;box-shadow:var(--shadow-2)}
  .diff-num{
    width:34px;height:34px;flex:none;border-radius:9px;
    background:var(--brand-soft);color:var(--brand);
    display:grid;place-items:center;
    font-size:13.5px;font-weight:700;font-variant-numeric:tabular-nums;
  }
  .diff-item h3{font-size:16.5px;margin-bottom:6px}
  .diff-item p{font-size:14px;line-height:1.75;color:var(--ink-2)}

  /* ============ FAQ ============ */
  .faq-card{
    background:var(--card);border:1px solid var(--line);
    border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;
  }
  .faq-item + .faq-item{border-top:1px solid var(--line-soft)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
    transition:color .2s,background .2s;
  }
  .faq-q:hover{background:var(--brand-tint);color:var(--brand-deep)}
  .faq-q .plus{
    width:22px;height:22px;flex:none;color:var(--ink-3);
    transition:transform .25s var(--ease),color .25s;
  }
  .faq-q .plus svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round}
  .faq-a{max-height:0;overflow:hidden;padding:0 24px;transition:max-height .3s var(--ease),padding .3s var(--ease)}
  .faq-a p{font-size:15px;line-height:1.85;color:var(--ink-2);padding-bottom:20px}
  .faq-item.is-open .faq-a{max-height:300px}
  .faq-item.is-open .plus{transform:rotate(45deg);color:var(--brand)}
  .faq-item.is-open .faq-q{color:var(--brand-deep)}

  /* ============ CTA ============ */
  .cta-card{
    background:var(--brand-deep);color:#fff;border-radius:24px;
    padding:40px 28px;
    display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between;
    box-shadow:var(--shadow-2);
  }
  @media (min-width:768px){.cta-card{padding:48px 44px}}
  .cta-card h2{color:#fff;max-width:22em}
  .cta-card p{margin-top:12px;color:rgba(255,255,255,.82);font-size:15px;line-height:1.8;max-width:36em}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

  /* ============ 页脚 ============ */
  .site-footer{background:#F1F5F8;border-top:1px solid var(--line);padding:56px 0 0;margin-top:16px}
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
  @media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.5fr;gap:40px}}
  .footer-brand p{font-size:14px;line-height:1.8;color:var(--ink-2);margin:14px 0 16px;max-width:320px}
  .footer-contact li{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2);margin-bottom:8px}
  .footer-contact svg{width:16px;height:16px;flex:none;stroke:var(--brand);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .footer-col h4{font-size:13px;letter-spacing:.08em;color:var(--ink-3);margin-bottom:14px;font-weight:600}
  .footer-col ul li{margin-bottom:10px}
  .footer-col a{font-size:14px;color:var(--ink-2);transition:color .2s}
  .footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
  .field{margin-bottom:10px}
  .field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px}
  .field input,.field textarea{
    width:100%;min-height:44px;border:1px solid var(--line);border-radius:10px;
    padding:10px 12px;background:#fff;font-size:14px;color:var(--ink);
    font-family:inherit;line-height:1.6;transition:border-color .2s,box-shadow .2s;
  }
  .field textarea{resize:vertical}
  .field input:focus,.field textarea:focus{
    outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,92,122,.14);
  }
  .field input::placeholder,.field textarea::placeholder{color:#A6B4BD}
  .footer-form .btn{width:100%;margin-top:4px}
  .form-note{font-size:12px;color:var(--ink-3);margin-top:8px;line-height:1.6}
  .footer-bottom{
    border-top:1px solid var(--line);margin-top:40px;padding:20px 0;
    display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
    font-size:12.5px;color:var(--ink-3);
  }
  .footer-bottom a{color:var(--ink-3)}
  .footer-bottom a:hover{color:var(--brand)}

  /* ============ 固定转化条 ============ */
  .fixed-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:rgba(255,255,255,.92);
    -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
    border-top:1px solid var(--line);padding:10px 16px;
  }
  .bar-inner{
    max-width:var(--container);margin:0 auto;
    display:flex;align-items:center;justify-content:space-between;gap:14px;
  }
  .bar-text{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);line-height:1.4}
  .bar-text svg{width:16px;height:16px;flex:none;stroke:var(--brand);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  @media (max-width:519px){
    .bar-text span.full{display:none}
    .bar-text{font-size:12.5px}
    .bar-inner .btn{padding:9px 14px;font-size:13px}
  }
  @media (min-width:1024px){
    .fixed-bar{padding:8px 32px}
    .bar-text{font-size:13.5px}
  }

  /* 提示 */
  .form-tip{
    display:none;font-size:13px;color:var(--brand-deep);background:var(--brand-soft);
    border-radius:8px;padding:8px 10px;margin-top:8px;
  }
  .form-tip.is-show{display:block}

/* roulang page: category4 */
:root{
  --brand:#1B5C7A;
  --brand-deep:#14475F;
  --brand-mid:#2A7characterless;
  --brand-soft:#EAF3F7;
  --brand-mist:#F4F9FB;
  --amber:#D98A2B;
  --ink:#12222B;
  --ink-2:#4A5C66;
  --ink-3:#7C8C95;
  --line:#DCE6EC;
  --line-soft:#EDF2F5;
  --bg:#F7FAFB;
  --card:#FFFFFF;
  --footer-bg:#F1F5F8;
  --r-card:16px;
  --r-lg:20px;
  --r-xl:24px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(18,34,43,.05),0 6px 18px -12px rgba(18,34,43,.12);
  --sh-2:0 2px 4px rgba(18,34,43,.06),0 18px 36px -18px rgba(18,34,43,.22);
  --ease:cubic-bezier(.4,0,.2,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink);background:var(--bg);
  letter-spacing:0;padding-bottom:96px;
  background-image:linear-gradient(to right,rgba(27,92,122,.035) 1px,transparent 1px),linear-gradient(to bottom,rgba(27,92,122,.035) 1px,transparent 1px);
  background-size:64px 64px;
  word-break:break-word;overflow-wrap:anywhere;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
button,input,textarea{font:inherit;color:inherit}
svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line)}
.btn-ghost:hover{border-color:#CFDDE5;color:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-soft{background:var(--brand-soft);color:var(--brand-deep);border-color:transparent}
.btn-soft:hover{background:#DDEBF2;transform:translateY(-1px)}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;background:var(--brand-mist);border:1px solid var(--line);color:var(--brand-deep);
  cursor:pointer;transition:background .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{background:#fff;transform:translateY(-1px)}
.icon-btn svg{width:20px;height:20px}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:12px;z-index:60;padding:0 12px;margin-bottom:8px;
}
.nav-shell{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:14px;
  background:rgba(255,255,255,.96);
  border:1px solid var(--line);border-radius:18px;
  padding:10px 14px;box-shadow:var(--sh-1);
  backdrop-filter:saturate(140%) blur(8px);
}
.brand{display:flex;align-items:center;gap:10px;color:var(--brand-deep);flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#fff;font-size:13px;font-weight:700;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;font-weight:700;font-size:15px;color:var(--brand-deep)}
.brand-sub{font-size:11px;font-weight:400;color:var(--ink-3);letter-spacing:.2px}
.nav-cards{display:none;gap:8px;margin-left:6px;flex:1 1 auto}
.nav-card{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-mist);border:1px solid transparent;border-left:2px solid transparent;
  border-radius:10px;padding:8px 11px;font-size:12.5px;font-weight:500;color:var(--ink-2);
  transition:background .2s var(--ease),transform .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.nav-card svg{width:15px;height:15px;color:var(--brand)}
.nav-card:hover{background:#fff;border-color:var(--line);transform:translateY(-1px);color:var(--brand-deep)}
.nav-card.is-active{background:#fff;border-color:var(--line);border-left:2px solid var(--brand);color:var(--brand-deep);font-weight:600}
.nav-right{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-cta{height:42px;padding:0 16px;font-size:14px;display:none}
@media(min-width:1180px){.nav-cta{display:inline-flex}}
.menu-toggle{display:inline-flex}
@media(min-width:1024px){
  .nav-cards{display:flex}
  .menu-toggle{display:none}
}
@media(max-width:1179px) and (min-width:1024px){
  .nav-card{padding:8px 9px;font-size:12px}
}
.mobile-drawer{
  position:fixed;inset:0;z-index:80;display:none;
}
.mobile-drawer.is-open{display:block}
.drawer-backdrop{position:absolute;inset:0;background:rgba(18,34,43,.42);backdrop-filter:blur(2px)}
.drawer-panel{
  position:absolute;left:12px;right:12px;top:12px;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:16px;box-shadow:var(--sh-2);
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-title{font-size:14px;font-weight:700;color:var(--brand-deep)}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.drawer-grid .nav-card{justify-content:flex-start;padding:12px;font-size:13px;background:var(--brand-mist)}
.drawer-foot{margin-top:14px}
.drawer-foot .btn{width:100%}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--ink-3);padding:18px 0 6px}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--brand-deep)}
.crumb .sep{color:#B9C8D1}
.crumb .now{color:var(--brand-deep);font-weight:600}

/* ---------- page hero ---------- */
.page-hero{
  display:grid;grid-template-columns:1fr;gap:22px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:26px 22px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-70px;top:-70px;width:230px;height:230px;border-radius:50%;
  background:var(--brand-mist);z-index:0;
}
.page-hero>*{position:relative;z-index:1}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-soft);color:var(--brand-deep);
  border-radius:999px;padding:6px 14px;font-size:12.5px;font-weight:600;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--amber);display:inline-block}
.page-hero h1{
  font-size:clamp(28px,3.4vw,42px);line-height:1.25;font-weight:700;
  color:var(--ink);margin-top:14px;letter-spacing:-.01em;
}
.page-hero h1 em{font-style:normal;color:var(--brand)}
.lede{color:var(--ink-2);font-size:16px;line-height:1.85;margin-top:14px;max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.hero-actions .btn{flex:1 1 auto;min-width:150px}
.hero-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16 / 11;background:var(--brand-mist);box-shadow:var(--sh-1);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
@media(min-width:900px){
  .page-hero{grid-template-columns:1.35fr .9fr;padding:34px 32px;align-items:center}
  .hero-actions .btn{flex:0 0 auto}
}

/* ---------- section base ---------- */
.section{padding:48px 0 0}
.section-head{margin-bottom:22px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;color:var(--ink)}
.section-head p{color:var(--ink-2);font-size:15px;margin-top:10px;max-width:66ch}
.kicker{font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--ink-3);text-transform:uppercase;margin-bottom:8px}

/* ---------- stats band ---------- */
.stats-band{
  display:grid;grid-template-columns:1fr 1fr;gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
}
.stat{background:#fff;padding:20px 18px}
.stat-num{
  font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--brand-deep);
  font-variant-numeric:tabular-nums;line-height:1.2;display:flex;align-items:baseline;gap:4px;
}
.stat-num small{font-size:13px;font-weight:600;color:var(--ink-3)}
.stat-label{font-size:13px;color:var(--ink-2);margin-top:6px;line-height:1.6}
@media(min-width:768px){.stats-band{grid-template-columns:repeat(4,1fr)}}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:6px}
.timeline::before{
  content:"";position:absolute;left:19px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(to bottom,var(--brand-soft),var(--line));
}
.tl-item{position:relative;padding:0 0 26px 56px}
.tl-item:last-child{padding-bottom:0}
.tl-num{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:12px;
  background:#fff;border:1px solid var(--line);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-1);transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.tl-item:hover .tl-num{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-2px)}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.tl-card:hover{transform:translateY(-3px);border-color:#CFDDE5;box-shadow:var(--sh-2)}
.tl-card h3{font-size:18px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.tl-card h3 .tag{font-size:12px;font-weight:600;color:var(--brand-deep);background:var(--brand-soft);border-radius:999px;padding:3px 10px}
.tl-card p{color:var(--ink-2);font-size:15px;line-height:1.85;margin-top:10px}
.tl-card ul{margin-top:12px;display:grid;gap:8px}
.tl-card li{position:relative;padding-left:24px;font-size:14.5px;color:var(--ink-2);line-height:1.75}
.tl-card li::before{
  content:"";position:absolute;left:2px;top:8px;width:9px;height:9px;border-radius:3px;
  border:1.5px solid var(--amber);transform:rotate(45deg);
}

/* ---------- split feature cards ---------- */
.split{display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:860px){.split{grid-template-columns:1fr 1fr}}
.split-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.split-card:hover{transform:translateY(-3px);border-color:#CFDDE5;box-shadow:var(--sh-2)}
.split-card .thumb{aspect-ratio:16 / 9;overflow:hidden;background:var(--brand-mist)}
.split-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.split-card:hover .thumb img{transform:scale(1.03)}
.split-card .body{padding:20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.split-card h3{font-size:18px;font-weight:600;color:var(--ink)}
.split-card p{font-size:14.5px;color:var(--ink-2);line-height:1.8}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);margin-top:auto;position:relative}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--amber);
  transition:width .25s var(--ease);
}
.link-arrow:hover{color:var(--brand-deep)}
.link-arrow:hover::after{width:100%}

/* ---------- faq ---------- */
.faq-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden}
.faq-item+.faq-item{border-top:1px solid var(--line-soft)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;cursor:pointer;text-align:left;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.faq-q:hover{color:var(--brand-deep);background:var(--brand-mist)}
.faq-q .plus{
  width:26px;height:26px;border-radius:8px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
  transition:transform .25s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.faq-q .plus svg{width:14px;height:14px}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg);color:var(--amber);border-color:#EBD7B8}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{padding:0 22px 18px;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ---------- cta ---------- */
.cta-card{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
  border-radius:var(--r-xl);padding:32px 24px;color:#fff;
  display:flex;flex-direction:column;gap:18px;box-shadow:var(--sh-2);
  position:relative;overflow:hidden;
}
.cta-card::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:220px;height:220px;
  border-radius:50%;border:1px solid rgba(255,255,255,.18);
}
.cta-card h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;line-height:1.35;position:relative;z-index:1}
.cta-card p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.86);max-width:62ch;position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}
.cta-card .btn-primary{background:#fff;color:var(--brand-deep)}
.cta-card .btn-primary:hover{background:#EAF3F7;color:var(--brand-deep)}
.cta-card .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.cta-card .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}

/* ---------- fixed bar ---------- */
.fixed-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);padding:10px 16px;
  display:flex;align-items:center;gap:14px;justify-content:space-between;
  box-shadow:0 -6px 18px -14px rgba(18,34,43,.3);
}
.fixed-bar .fb-text{font-size:13.5px;color:var(--ink-2);line-height:1.5;display:none}
.fixed-bar .fb-brand{font-size:12.5px;color:var(--ink-3);display:block}
.fixed-bar .btn{height:42px;padding:0 18px;font-size:14px}
@media(min-width:1024px){
  .fixed-bar{left:50%;transform:translateX(-50%);right:auto;width:min(1100px,calc(100% - 64px));bottom:14px;border:1px solid var(--line);border-radius:14px;padding:10px 18px}
  .fixed-bar .fb-text{display:block}
}

/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);margin-top:56px;padding:44px 0 0}
.footer-grid{display:grid;gap:30px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr .8fr .8fr 1.2fr;gap:34px}}
.footer-brand p{font-size:14px;color:var(--ink-2);line-height:1.8;margin-top:14px;max-width:34ch}
.footer-contact{margin-top:16px;display:grid;gap:8px}
.footer-contact li{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2)}
.footer-contact svg{width:16px;height:16px;color:var(--brand)}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--ink-3);text-transform:uppercase;margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--ink-2)}
.footer-col a:hover{color:var(--brand-deep)}
.footer-form .field{margin-bottom:10px}
.footer-form label{display:block;font-size:12.5px;color:var(--ink-3);margin-bottom:6px}
.footer-form input,.footer-form textarea{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:11px 13px;font-size:14px;color:var(--ink);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.footer-form input{height:44px}
.footer-form textarea{resize:vertical;min-height:80px}
.footer-form input::placeholder,.footer-form textarea::placeholder{color:#9CABB4}
.footer-form input:focus,.footer-form textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,92,122,.14)}
.footer-form .btn{width:100%;margin-top:6px}
.form-note{font-size:12px;color:var(--ink-3);margin-top:10px;line-height:1.6}
.footer-bottom{
  margin-top:38px;border-top:1px solid var(--line);padding:18px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--ink-3);
}
.footer-bottom a{color:var(--ink-3)}
.footer-bottom a:hover{color:var(--brand-deep)}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:14px}