/* roulang page: index */
:root{
  --steel:#1D5C79;
  --steel-d:#164A62;
  --rock:#E2794A;
  --moss:#6E8F6A;
  --ink:#16242B;
  --ink2:#4A5A61;
  --ink3:#88979D;
  --bg:#F5F7F7;
  --card:#FFFFFF;
  --alt:#EEF2F3;
  --foot:#102A35;
  --line:#E4EAEB;
  --r-s:8px;
  --r-m:12px;
  --r-l:16px;
  --r-xl:24px;
  --sh1:0 1px 3px rgba(20,60,80,.06);
  --sh2:0 12px 28px rgba(20,60,80,.08);
  --sh3:0 20px 44px rgba(20,60,80,.12);
  --sp1:4px; --sp2:8px; --sp3:12px; --sp4:16px; --sp5:24px; --sp6:32px; --sp7:48px; --sp8:64px; --sp9:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.8;font-weight:400;color:var(--ink);background:var(--bg);
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--steel);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--rock);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;font-size:16px;}
:focus-visible{outline:3px solid rgba(29,92,121,.35);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-alt{background:var(--alt);}
.section-tight{padding:72px 0;}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.97);
  -webkit-backdrop-filter:saturate(180%) blur(10px);backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:var(--sh1);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:74px;}
.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.2px;flex:none;}
.logo:hover{color:var(--ink);}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--steel);color:#fff;display:grid;place-items:center;flex:none;}
.logo-text{white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;flex:1;margin-left:8px;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:42px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--ink2);border-radius:var(--r-s);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;background:var(--steel);
  transform:scaleX(0);transform-origin:left center;transition:transform .18s ease;
}
.nav-links a:hover{color:var(--steel);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a[aria-current="page"]{color:var(--steel);font-weight:600;}
.nav-links a[aria-current="page"]::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-m);
  padding:0;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:14px 28px;border-radius:var(--r-m);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.2px;
  border:1.5px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--steel);color:#fff;box-shadow:var(--sh1);}
.btn-primary:hover{background:var(--rock);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--steel);border-color:var(--steel);}
.btn-ghost:hover{background:rgba(29,92,121,.06);color:var(--steel);transform:translateY(-1px);}
.btn-sm{min-height:42px;padding:11px 18px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--steel);}
.btn-text i{transition:transform .18s ease;}
.btn-text:hover i{transform:translateX(4px);}
.btn-text:hover{color:var(--rock);}

/* ===== 通用标题区 ===== */
.sec-head{max-width:760px;margin-bottom:var(--sp6);}
.sec-eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--moss);text-transform:uppercase;}
.sec-title{font-size:30px;line-height:1.35;font-weight:700;color:var(--ink);margin:12px 0 12px;letter-spacing:-.2px;}
.sec-desc{font-size:16px;color:var(--ink2);}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;line-height:1;
  padding:6px 12px;border-radius:999px;background:rgba(110,143,106,.14);color:#4A6A46;
}
.badge-rock{background:rgba(226,121,74,.14);color:#B8542A;}
.badge-steel{background:rgba(29,92,121,.12);color:var(--steel);}

/* ===== Hero ===== */
.hero{position:relative;background:#EFF4F5;padding:72px 0 104px;overflow:hidden;}
.hero-ridge{position:absolute;left:0;right:0;bottom:0;height:120px;color:var(--steel);opacity:.10;pointer-events:none;}
.hero-ridge svg{width:100%;height:100%;display:block;}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--steel);background:rgba(29,92,121,.09);padding:7px 14px;border-radius:999px;
}
.hero h1{font-size:40px;line-height:1.28;font-weight:700;color:var(--ink);margin:20px 0 18px;letter-spacing:-.4px;}
.hero-sub{font-size:17px;line-height:1.85;color:var(--ink2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-notes{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:26px;font-size:14px;color:var(--ink2);}
.hero-notes span{display:inline-flex;align-items:center;gap:7px;}
.hero-notes i{color:var(--moss);}
.hero-side{position:relative;}
.hero-media{
  border-radius:var(--r-xl);overflow:hidden;background:var(--alt);box-shadow:var(--sh3);
  aspect-ratio:4/3;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-stat{
  position:relative;margin-top:-46px;margin-left:24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-l);box-shadow:var(--sh2);display:grid;grid-template-columns:repeat(3,1fr);
}
.hero-stat-item{padding:18px 14px;text-align:center;border-right:1px solid var(--line);}
.hero-stat-item:last-child{border-right:0;}
.hero-stat-item strong{display:block;font-size:26px;font-weight:700;color:var(--steel);line-height:1.15;font-variant-numeric:tabular-nums;}
.hero-stat-item strong em{font-style:normal;font-size:14px;margin-left:1px;}
.hero-stat-item span{display:block;font-size:13px;color:var(--ink3);margin-top:4px;}

/* ===== 服务 ===== */
.service-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:24px;align-items:start;}
.service-col{display:grid;gap:24px;}
.service-col .card:nth-child(2){margin-top:24px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sh2);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
.card-pad{padding:24px;}
.card-media{position:relative;border-radius:var(--r-l) var(--r-l) 0 0;overflow:hidden;background:var(--alt);aspect-ratio:16/10;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:24px;}
.card h3{font-size:20px;font-weight:700;color:var(--ink);line-height:1.45;margin-bottom:10px;}
.card p{font-size:15px;color:var(--ink2);line-height:1.8;}
.icon-box{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:rgba(29,92,121,.1);color:var(--steel);font-size:19px;margin-bottom:18px;
}
.icon-box.moss{background:rgba(110,143,106,.14);color:var(--moss);}
.icon-box.rock{background:rgba(226,121,74,.14);color:var(--rock);}
.card-list{margin-top:16px;display:grid;gap:10px;}
.card-list li{position:relative;padding-left:18px;font-size:14px;color:var(--ink2);}
.card-list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--steel);}
.service-lead .card-media{aspect-ratio:16/9;}

/* ===== 数据 ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh2);overflow:hidden;}
.stat-item{padding:36px 22px;text-align:center;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:40px;font-weight:700;color:var(--steel);line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-1px;}
.stat-num em{font-style:normal;font-size:17px;font-weight:700;margin-left:2px;color:var(--ink2);}
.stat-label{font-size:14px;color:var(--ink2);margin-top:10px;}
.stats-note{margin-top:20px;font-size:14px;color:var(--ink3);text-align:center;}

/* ===== 案例 ===== */
.case-grid{display:grid;grid-template-columns:1.28fr 1fr;gap:24px;align-items:stretch;}
.case-side{display:grid;gap:24px;}
.case-card{display:flex;flex-direction:column;overflow:hidden;height:100%;}
.case-card .card-media{border-radius:var(--r-l) var(--r-l) 0 0;aspect-ratio:16/10;}
.case-card.is-big .card-media{aspect-ratio:16/9;}
.case-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.case-body h3{font-size:19px;margin:0;}
.case-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.case-foot .date{font-size:13px;color:var(--ink3);font-variant-numeric:tabular-nums;}

/* ===== 方案 ===== */
.plan-layout{display:grid;grid-template-columns:230px 1fr;gap:48px;align-items:start;}
.plan-nav{position:sticky;top:98px;display:grid;gap:4px;padding-right:8px;}
.plan-nav a{
  display:block;padding:11px 16px;border-radius:10px;font-size:15px;color:var(--ink2);
  border-left:2px solid transparent;transition:all .18s ease;
}
.plan-nav a:hover{background:var(--alt);color:var(--steel);}
.plan-nav a.active{color:var(--steel);font-weight:600;background:rgba(29,92,121,.06);border-left-color:var(--steel);}
.plan-blocks{display:grid;gap:32px;}
.plan-block{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh2);padding:28px;
}
.plan-block:nth-child(even) .plan-text{order:2;}
.plan-block:nth-child(even) .plan-img{order:1;}
.plan-text h3{font-size:22px;font-weight:700;color:var(--ink);margin-bottom:12px;}
.plan-text p{font-size:15px;color:var(--ink2);}
.plan-text .card-list li::before{background:var(--moss);}
.plan-img{border-radius:var(--r-l);overflow:hidden;background:var(--alt);aspect-ratio:4/3;}
.plan-img img{width:100%;height:100%;object-fit:cover;}

/* ===== 资讯 / CMS ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-l);
  box-shadow:var(--sh2);overflow:hidden;color:inherit;transition:transform .18s ease,box-shadow .18s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);color:inherit;}
.news-card.is-lead{grid-column:1 / -1;flex-direction:row;}
.news-thumb{background:var(--alt);overflow:hidden;aspect-ratio:16/10;flex:none;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-card.is-lead .news-thumb{width:46%;aspect-ratio:auto;min-height:260px;}
.news-card.is-lead .news-thumb img{height:100%;}
.news-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-card.is-lead .news-body{padding:32px;justify-content:center;}
.news-title{font-size:18px;font-weight:700;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card.is-lead .news-title{font-size:22px;-webkit-line-clamp:2;}
.news-excerpt{font-size:14px;color:var(--ink2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink3);}
.news-meta time{font-variant-numeric:tabular-nums;}
.news-meta i{color:var(--steel);transition:transform .18s ease;}
.news-card:hover .news-meta i{transform:translateX(4px);}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-l);padding:56px 24px;color:var(--ink2);
}
.empty-state i{font-size:26px;color:var(--ink3);}
.empty-state p{font-size:15px;margin:0;}

/* ===== FAQ ===== */
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh1);overflow:hidden;transition:background-color .18s ease,box-shadow .18s ease;}
.faq-item[open]{background:#FAFCFC;box-shadow:var(--sh2);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;padding:18px 58px 18px 22px;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--steel);transition:transform .18s ease;line-height:1;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);}
.faq-item[open] summary{color:var(--steel);}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--ink2);line-height:1.85;}

/* ===== 联系 ===== */
.contact-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start;}
.promise-list{display:grid;gap:16px;margin-top:28px;}
.promise-item{display:flex;gap:14px;align-items:flex-start;}
.promise-item i{color:var(--moss);font-size:18px;margin-top:5px;}
.promise-item strong{display:block;font-size:16px;color:var(--ink);}
.promise-item span{font-size:14px;color:var(--ink2);}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh2);padding:32px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-m);padding:13px 16px;
  background:#FBFDFD;color:var(--ink);line-height:1.6;transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.field textarea{min-height:120px;resize:vertical;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--steel);background:#fff;box-shadow:0 0 0 3px rgba(29,92,121,.18);
}
.field .err{display:none;font-size:13px;color:var(--rock);margin-top:6px;}
.field.has-error input,.field.has-error textarea{border-color:var(--rock);}
.field.has-error .err{display:block;}
.form-tip{font-size:13px;color:var(--ink3);margin-top:14px;line-height:1.7;}
.form-ok{display:none;margin-bottom:16px;padding:12px 16px;border-radius:var(--r-m);background:rgba(110,143,106,.14);color:#456B41;font-size:14px;}
.form-ok.show{display:block;}

/* ===== CTA 条 ===== */
.cta-bar{
  position:relative;border-radius:var(--r-xl);overflow:hidden;background:var(--foot);color:#fff;
  padding:56px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-bar::before{
  content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.24;
}
.cta-bar > *{position:relative;z-index:2;}
.cta-bar h3{font-size:26px;font-weight:700;line-height:1.4;margin-bottom:8px;}
.cta-bar p{font-size:15px;color:rgba(255,255,255,.78);}
.cta-bar .btn-ghost{color:#fff;border-color:rgba(255,255,255,.55);}
.cta-bar .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}

/* ===== 页脚 ===== */
.site-footer{background:var(--foot);color:#fff;padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:48px;}
.footer-grid > div + div{border-left:1px solid rgba(255,255,255,.12);padding-left:32px;}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand .logo-mark{background:rgba(255,255,255,.14);}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.7);line-height:1.85;max-width:340px;}
.footer-col h4{font-size:15px;font-weight:600;margin:0 0 18px;color:#fff;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:#fff;}
.footer-col li{font-size:14px;color:rgba(255,255,255,.72);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;align-items:center;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom p{margin:0;}

/* ===== 移动端面板 ===== */
.mobile-mask{
  position:fixed;inset:0;background:rgba(16,42,53,.45);opacity:0;pointer-events:none;
  transition:opacity .25s ease;z-index:90;
}
.mobile-panel{
  position:fixed;top:0;right:0;bottom:0;width:min(330px,88vw);background:#fff;z-index:100;
  transform:translateX(102%);transition:transform .26s ease;display:flex;flex-direction:column;
  padding:22px;box-shadow:var(--sh3);
}
body.nav-open .mobile-panel{transform:translateX(0);}
body.nav-open .mobile-mask{opacity:1;pointer-events:auto;}
body.nav-open{overflow:hidden;}
.mobile-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.mobile-close{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-m);font-size:18px;color:var(--ink2);cursor:pointer;}
.mobile-links{display:grid;gap:6px;}
.mobile-links a{
  padding:14px 16px;border-radius:var(--r-m);font-size:16px;font-weight:500;color:var(--ink);
  border:1px solid transparent;
}
.mobile-links a:hover{background:var(--alt);color:var(--steel);}
.mobile-links a[aria-current="page"]{color:var(--steel);font-weight:700;background:rgba(29,92,121,.07);}
.mobile-panel .btn{margin-top:auto;}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .hero{padding:56px 0 88px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:32px;}
  .hero-media{aspect-ratio:16/10;}
  .service-grid{grid-template-columns:1fr;}
  .service-col{gap:24px;}
  .service-col .card:nth-child(2){margin-top:0;}
  .plan-layout{grid-template-columns:1fr;gap:32px;}
  .plan-nav{position:static;display:flex;flex-wrap:wrap;gap:8px;padding:0;}
  .plan-nav a{border-left:0;border-bottom:2px solid transparent;padding:9px 14px;}
  .plan-nav a.active{border-left:0;border-bottom-color:var(--steel);}
  .contact-wrap{grid-template-columns:1fr;gap:32px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .news-card.is-lead{grid-column:1 / -1;flex-direction:column;}
  .news-card.is-lead .news-thumb{width:100%;min-height:0;aspect-ratio:16/9;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
  .case-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-grid > div + div{border-left:0;padding-left:0;}
  .footer-grid > div:nth-child(n+3){border-top:1px solid rgba(255,255,255,.12);padding-top:28px;}
}
@media (max-width:768px){
  .nav-links{display:none;}
  .nav-actions .btn-ghost{display:none;}
  .nav-toggle{display:flex;}
  .container{padding:0 16px;}
  .hero h1{font-size:28px;}
  .sec-title{font-size:22px;}
  .section{padding:56px 0;}
  .hero{padding:40px 0 72px;}
  .hero-actions .btn{width:100%;}
  .hero-stat{margin-left:0;margin-top:-32px;}
  .stats{grid-template-columns:1fr 1fr;border-radius:var(--r-l);}
  .stat-num{font-size:32px;}
  .plan-block{grid-template-columns:1fr;gap:20px;padding:20px;}
  .plan-block:nth-child(even) .plan-text{order:1;}
  .plan-block:nth-child(even) .plan-img{order:2;}
  .news-grid{grid-template-columns:1fr;}
  .cta-bar{padding:36px 24px;}
  .cta-bar h3{font-size:21px;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-grid > div + div{border-top:1px solid rgba(255,255,255,.12);padding-top:24px;}
  .card,.news-card,.plan-block,.form-card{box-shadow:var(--sh1);}
}
@media (max-width:480px){
  .hero-stat{grid-template-columns:1fr 1fr 1fr;}
  .hero-stat-item strong{font-size:20px;}
  .hero-stat-item span{font-size:12px;}
  .stat-item{padding:24px 14px;}
  .stat-num{font-size:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
}
@media (min-width:1280px){
  .hero h1{font-size:44px;}
}

/* roulang page: article */
:root{
  --c-primary:#1D5C79;
  --c-primary-dark:#15495F;
  --c-primary-deep:#0E3547;
  --c-primary-soft:rgba(29,92,121,.08);
  --c-accent:#E2794A;
  --c-accent-soft:rgba(226,121,74,.12);
  --c-moss:#6E8F6A;
  --c-moss-soft:rgba(110,143,106,.14);
  --c-ink:#16242B;
  --c-text:#4A5A61;
  --c-muted:#88979D;
  --c-bg:#F5F7F7;
  --c-card:#FFFFFF;
  --c-alt:#EEF2F3;
  --c-footer:#102A35;
  --c-border:#E4EAEB;
  --r-xs:8px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --sh1:0 1px 3px rgba(20,60,80,.06);
  --sh2:0 12px 28px rgba(20,60,80,.08);
  --sh3:0 20px 44px rgba(20,60,80,.12);
  --container:1200px;
  --read:780px;
  --t:180ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--c-accent)}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--c-ink);font-weight:600;line-height:1.35}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
::selection{background:var(--c-primary-soft);color:var(--c-ink)}
:focus-visible{outline:3px solid rgba(29,92,121,.28);outline-offset:2px}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.grid-x{display:flex;flex-flow:row wrap}
.grid-margin-x{margin-left:-16px;margin-right:-16px}
.grid-margin-x>.cell{margin-left:16px;margin-right:16px}
.cell{flex:0 0 auto;min-width:0}
.cell.small-12{width:calc(100% - 32px)}
@media screen and (min-width:768px){
  .cell.medium-6{width:calc(50% - 32px)}
  .cell.medium-12{width:calc(100% - 32px)}
}
@media screen and (min-width:1024px){
  .cell.large-4{width:calc(33.3333% - 32px)}
  .cell.large-7{width:calc(58.3333% - 32px)}
  .cell.large-8{width:calc(66.6667% - 32px)}
  .cell.large-12{width:calc(100% - 32px)}
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 26px;
  border-radius:var(--r-sm);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:500;
  line-height:1.2;
  cursor:pointer;
  transition:background-color var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
  background:none;
  text-align:center;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh1)}
.btn-primary:hover{background:var(--c-accent);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh1)}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark)}
.btn-ghost-light{border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-sm{min-height:38px;padding:8px 18px;font-size:14px}
.btn-block{width:100%}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:500;font-size:15px}
.btn-text .arrow{transition:transform var(--t)}
.btn-text:hover .arrow{transform:translateX(4px)}

/* 徽章 */
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:500;
  letter-spacing:.02em;
  white-space:nowrap;
}
.badge-moss{background:var(--c-moss-soft);color:#43603F}
.badge-accent{background:var(--c-accent-soft);color:#A34F23}
.badge-primary{background:var(--c-primary-soft);color:var(--c-primary-dark)}

/* 头部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--c-border);
  box-shadow:var(--sh1);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:72px;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto}
.logo:hover{color:var(--c-primary)}
.logo-mark{
  width:36px;height:36px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,var(--c-primary) 0%,var(--c-primary-deep) 100%);
  color:#fff;
  box-shadow:var(--sh1);
}
.logo-text{font-size:18px;font-weight:700;letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:30px;margin-left:12px}
.nav-links>a{
  position:relative;
  color:var(--c-text);
  font-size:15px;
  font-weight:500;
  padding:6px 0;
  white-space:nowrap;
}
.nav-links>a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:2px;width:100%;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--t);
}
.nav-links>a:hover{color:var(--c-primary)}
.nav-links>a:hover::after{transform:scaleX(1)}
.nav-links>a[aria-current="page"]{color:var(--c-primary)}
.nav-links>a[aria-current="page"]::after{transform:scaleX(1)}
.nav-mobile-cta{display:none}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--c-border);
  border-radius:var(--r-sm);
  background:#fff;
  padding:0;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform var(--t),opacity var(--t)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 面包屑 */
.crumb-bar{padding:24px 0 16px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-muted);list-style:none}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb a{color:var(--c-text)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:#C3CFD3}
.crumb .current{color:var(--c-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:320px;display:inline-block}

/* 文章主体布局 */
.article-shell{padding-bottom:56px}
.article-layout{align-items:flex-start}
.article-main{max-width:var(--read)}
.article-side{
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  background:var(--c-card);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  box-shadow:var(--sh1);
  padding:22px 22px 20px;
}
.side-title{font-size:16px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--c-border)}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:4px}
.toc-list a{
  display:block;
  padding:6px 0 6px 12px;
  border-left:2px solid var(--c-border);
  color:var(--c-text);
  font-size:14px;
  line-height:1.6;
  transition:border-color var(--t),color var(--t),background-color var(--t);
}
.toc-list a:hover,.toc-list a.is-active{border-left-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}
.toc-empty{font-size:13px;color:var(--c-muted)}
.side-links{list-style:none;display:flex;flex-direction:column}
.side-links li{border-bottom:1px dashed var(--c-border)}
.side-links li:last-child{border-bottom:0}
.side-links a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;font-size:14.5px;color:var(--c-ink)}
.side-links a:hover{color:var(--c-primary)}
.side-links a span{font-size:13px;color:var(--c-muted)}
.side-contact{background:linear-gradient(165deg,#FFFFFF 0%,#F2F7F8 100%)}
.side-contact p{font-size:14px;color:var(--c-text);margin-bottom:16px}
.side-facts{list-style:none;display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.side-facts li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--c-text)}
.side-facts .dot{width:8px;height:8px;border-radius:2px;background:var(--c-moss);flex:0 0 auto}

/* 文章卡片容器 */
.article-card{
  background:var(--c-card);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh2);
  padding:40px 44px 44px;
}
.article-head{padding-bottom:24px;border-bottom:1px solid var(--c-border)}
.article-head h1{
  font-size:34px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:.005em;
  margin-bottom:18px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 16px;
  font-size:14px;
  color:var(--c-muted);
}
.article-meta time{color:var(--c-text);font-variant-numeric:tabular-nums}
.meta-divider{width:1px;height:14px;background:var(--c-border)}
.share-row{margin-left:auto;display:flex;align-items:center;gap:8px}
.share-label{font-size:13px;color:var(--c-muted)}
.share-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:34px;padding:0 12px;
  border:1px solid var(--c-border);
  border-radius:999px;
  background:#fff;
  color:var(--c-text);
  font-size:13px;
  cursor:pointer;
  transition:color var(--t),border-color var(--t),background-color var(--t);
}
.share-btn:hover{color:var(--c-primary);border-color:var(--c-primary);background:var(--c-primary-soft)}
.article-figure{margin:28px 0 0}
.article-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-md);background:var(--c-alt)}
.article-figure figcaption{margin-top:10px;font-size:13px;color:var(--c-muted);text-align:center}

/* 正文排版 */
.article-body{
  padding-top:28px;
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-ink);
  overflow-wrap:break-word;
}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.1em;color:var(--c-text)}
.article-body h2{
  font-size:24px;
  line-height:1.45;
  margin:40px 0 16px;
  padding-left:14px;
  border-left:4px solid var(--c-primary);
  color:var(--c-ink);
  scroll-margin-top:96px;
}
.article-body h3{font-size:19px;margin:28px 0 12px;color:var(--c-primary-dark)}
.article-body h4{font-size:17px;margin:22px 0 10px;color:var(--c-ink)}
.article-body ul{list-style:none;margin:0 0 1.15em;padding:0}
.article-body ul>li{position:relative;padding-left:22px;margin-bottom:8px;color:var(--c-text)}
.article-body ul>li::before{
  content:"";
  position:absolute;
  left:2px;top:.72em;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--c-primary);
}
.article-body ol{margin:0 0 1.15em;padding-left:22px;color:var(--c-text)}
.article-body ol>li{margin-bottom:8px;padding-left:4px}
.article-body ol>li::marker{color:var(--c-primary);font-weight:600}
.article-body blockquote{
  margin:24px 0;
  padding:18px 24px;
  background:var(--c-alt);
  border-left:4px solid var(--c-primary);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--c-text);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-sm);margin:24px auto;background:var(--c-alt)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:8px}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--c-accent)}
.article-body strong{color:var(--c-ink);font-weight:600}
.article-body code{
  background:var(--c-alt);
  border-radius:var(--r-xs);
  padding:2px 6px;
  font-size:14px;
  color:var(--c-primary-dark);
}
.article-body hr{border:0;border-top:1px solid var(--c-border);margin:32px 0}
.article-body table{
  width:100%;
  border:1px solid var(--c-border);
  border-collapse:collapse;
  margin:24px 0;
  font-size:14.5px;
  border-radius:var(--r-sm);
  overflow:hidden;
}
.article-body th,.article-body td{border:1px solid var(--c-border);padding:11px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--c-alt);color:var(--c-ink);font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAFCFC}

/* 空态 */
.empty-state{
  padding:56px 24px;
  text-align:center;
  background:var(--c-alt);
  border:1px dashed var(--c-border);
  border-radius:var(--r-md);
  margin-top:28px;
}
.empty-state svg{color:var(--c-muted);margin:0 auto 16px}
.empty-state h2{font-size:20px;margin-bottom:8px}
.empty-state p{font-size:14.5px;color:var(--c-text);margin-bottom:20px}

/* 文末 */
.article-foot{padding-top:32px;margin-top:36px;border-top:1px solid var(--c-border)}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:28px}
.tag-row .tag-label{font-size:13px;color:var(--c-muted);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;
  height:30px;padding:0 14px;
  border-radius:999px;
  background:var(--c-alt);
  color:var(--c-text);
  font-size:13px;
  transition:background-color var(--t),color var(--t);
}
.tag:hover{background:var(--c-primary-soft);color:var(--c-primary-dark)}
.pager-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:32px}
.pager-card{
  display:block;
  padding:20px 22px;
  background:var(--c-card);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  box-shadow:var(--sh1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.pager-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:#D5E0E3;color:inherit}
.pager-card .pager-kicker{font-size:12px;color:var(--c-muted);letter-spacing:.06em;margin-bottom:8px;display:block}
.pager-card strong{display:block;font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.55;margin-bottom:6px}
.pager-card p{font-size:13.5px;color:var(--c-text);margin:0}
.article-actions{display:flex;justify-content:center}

/* 相关推荐 */
.related-section{padding-top:56px}
.section-head{margin-bottom:24px}
.section-head .kicker{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--c-primary);
  margin-bottom:10px;
}
.section-head h2{font-size:26px;line-height:1.4}
.section-head p{font-size:14.5px;color:var(--c-text);margin-top:10px;max-width:640px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{
  display:flex;
  flex-direction:column;
  background:var(--c-card);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  box-shadow:var(--sh2);
  overflow:hidden;
  transition:transform var(--t),box-shadow var(--t);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh3)}
.related-card .thumb{overflow:hidden;background:var(--c-alt);aspect-ratio:16/10}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 300ms ease}
.related-card:hover .thumb img{transform:scale(1.03)}
.related-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-card h3{font-size:17px;line-height:1.5;color:var(--c-ink)}
.related-card p{font-size:14px;color:var(--c-text);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .more{margin-top:auto;font-size:14px;font-weight:500;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.related-card:hover .more{color:var(--c-accent)}

/* CTA 通栏 */
.cta-band{
  margin-top:64px;
  background:linear-gradient(150deg,var(--c-primary-deep) 0%,var(--c-primary) 100%);
  border-radius:var(--r-lg);
  padding:44px 48px;
  color:#fff;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  box-shadow:var(--sh2);
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-40px;bottom:-60px;
  width:260px;height:260px;
  border-radius:50%;
  background:rgba(255,255,255,.06);
}
.cta-band h2{color:#fff;font-size:24px;margin-bottom:8px;position:relative}
.cta-band p{color:rgba(255,255,255,.82);font-size:14.5px;max-width:560px;margin:0;position:relative}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}

/* 页脚 */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.72);margin-top:88px}
.site-footer .container{padding-top:64px;padding-bottom:28px}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:0;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-col{padding-left:32px;border-left:1px solid rgba(255,255,255,.12)}
.footer-brand{padding-right:32px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:0}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:rgba(255,255,255,.66)}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding-top:24px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.footer-bottom p{margin:0}

/* 响应式 */
@media screen and (max-width:1023px){
  .container{padding-left:20px;padding-right:20px}
  .article-side{flex-direction:row;flex-wrap:wrap;margin-top:32px}
  .article-side .side-card{flex:1 1 300px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 0}
  .footer-col{padding-left:0;border-left:0}
  .footer-brand{padding-right:0;grid-column:1 / -1}
}
@media screen and (max-width:960px){
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;
    top:72px;right:0;bottom:0;
    width:min(320px,86vw);
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:20px 22px 40px;
    box-shadow:var(--sh3);
    border-left:1px solid var(--c-border);
    transform:translateX(102%);
    transition:transform 220ms cubic-bezier(.4,0,.2,1);
    overflow-y:auto;
    margin-left:0;
    z-index:70;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-links>a{
    font-size:16px;
    padding:15px 0;
    border-bottom:1px solid var(--c-border);
  }
  .nav-links>a::after{display:none}
  .nav-links>a[aria-current="page"]{color:var(--c-primary);font-weight:600}
  .nav-mobile-cta{
    display:flex;
    align-items:center;
    justify-content:center;
    margin-top:24px;
    min-height:48px;
    border-radius:var(--r-sm);
    background:var(--c-primary);
    color:#fff;
    font-weight:500;
    font-size:16px;
  }
  .nav-mobile-cta:hover{background:var(--c-accent);color:#fff}
  .nav-actions .btn-ghost{display:none}
  .nav-actions .btn-primary{display:none}
}
@media screen and (max-width:767px){
  .container{padding-left:16px;padding-right:16px}
  .article-card{padding:26px 20px 30px;border-radius:var(--r-md)}
  .article-head h1{font-size:25px}
  .article-body{font-size:16px;line-height:1.82}
  .article-body h2{font-size:21px;margin:32px 0 14px}
  .article-body h3{font-size:18px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .share-row{margin-left:0;width:100%}
  .crumb .current{max-width:180px}
  .pager-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .cta-band{padding:32px 24px;border-radius:var(--r-md)}
  .cta-band h2{font-size:21px}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .site-footer .container{padding-top:48px}
  .side-card{padding:18px}
  .logo-text{font-size:16px}
}
@media screen and (max-width:400px){
  .article-head h1{font-size:22px}
}

/* roulang page: category1 */
/* ===================== 设计变量 ===================== */
:root{
  --steel:#1D5C79;
  --steel-600:#174A61;
  --rock:#E2794A;
  --tundra:#6E8F6A;
  --ink:#16242B;
  --ink-2:#4A5A61;
  --ink-3:#88979D;
  --bg:#F5F7F7;
  --card:#FFFFFF;
  --alt:#EEF2F3;
  --foot:#102A35;
  --border:#E4EAEB;

  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;

  --sp-1:4px;  --sp-2:8px;  --sp-3:12px; --sp-4:16px;
  --sp-6:24px; --sp-8:32px; --sp-12:48px; --sp-16:64px; --sp-24:96px;

  --sh1:0 1px 3px rgba(20,60,80,.06);
  --sh2:0 12px 28px rgba(20,60,80,.08);
  --sh3:0 20px 44px rgba(20,60,80,.12);

  --ease:180ms cubic-bezier(.2,.7,.3,1);
  --maxw:1200px;
}

/* ===================== 基础重置 ===================== */
*,*::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","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:var(--steel);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--rock);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
:focus-visible{outline:3px solid rgba(29,92,121,.28);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(29,92,121,.16);}

/* Foundation 默认样式覆盖 */
body,html{background-color:var(--bg);}
a{color:var(--steel);}
.button,.button:hover{font-family:inherit;}
h1,h2,h3,h4{font-family:inherit;color:inherit;letter-spacing:.2px;}
p{font-size:inherit;line-height:inherit;}

/* ===================== 容器与布局 ===================== */
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--sp-6);
}
.section{padding:var(--sp-24) 0;}
.section--alt{background:var(--alt);}
.section--tight{padding:var(--sp-16) 0;}
.sec-head{max-width:760px;margin-bottom:var(--sp-8);}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;font-weight:600;letter-spacing:.06em;
  padding:6px 12px;border-radius:999px;
  background:rgba(110,143,106,.12);color:#4C6B49;
  margin-bottom:var(--sp-4);
}
.sec-title{font-size:30px;line-height:1.4;font-weight:700;color:var(--ink);}
.sec-sub{margin-top:var(--sp-3);color:var(--ink-2);font-size:15px;}
.lead-para{font-size:16px;color:var(--ink-2);max-width:860px;margin-bottom:var(--sp-8);}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;min-height:44px;
  border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1.5px solid transparent;
  text-align:center;
  transition:background-color var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.btn-primary{background:var(--steel);color:#fff;box-shadow:var(--sh1);}
.btn-primary:hover{background:var(--rock);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh1);}
.btn-ghost{background:#fff;border-color:var(--steel);color:var(--steel);}
.btn-ghost:hover{background:rgba(29,92,121,.06);color:var(--steel-600);transform:translateY(-1px);box-shadow:var(--sh1);}
.btn-light{background:#fff;color:var(--steel);box-shadow:var(--sh1);}
.btn-light:hover{background:var(--rock);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.7);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-sm{padding:10px 20px;font-size:14px;border-radius:10px;min-height:40px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--steel);font-weight:600;font-size:15px;
}
.btn-text i{transition:transform var(--ease);font-size:12px;}
.btn-text:hover{color:var(--rock);}
.btn-text:hover i{transform:translateX(4px);}

/* ===================== 头部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--border);box-shadow:var(--sh1);}
.nav-wrap{display:flex;align-items:center;gap:var(--sp-6);min-height:74px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;flex:0 0 auto;}
.logo:hover{color:var(--ink);}
.logo-mark{
  width:36px;height:36px;border-radius:10px;background:var(--steel);
  display:grid;place-items:center;color:#fff;flex:0 0 auto;
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.4px;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:var(--sp-1);margin-left:var(--sp-4);}
.nav-links a{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 14px;min-height:44px;
  font-size:15px;font-weight:500;color:var(--ink-2);
  border-radius:var(--r-sm);
  transition:color var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--steel);border-radius:2px;
  transform:scaleX(0);transform-origin:left center;
  transition:transform var(--ease);
}
.nav-links a:hover{color:var(--steel);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a[aria-current="page"]{color:var(--steel);font-weight:600;}
.nav-links a[aria-current="page"]::after{transform:scaleX(1);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:var(--sp-3);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--border);background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* 移动端抽屉 */
.mobile-panel{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:#fff;z-index:120;
  box-shadow:var(--sh3);
  transform:translateX(102%);
  transition:transform 260ms cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;
  padding:var(--sp-6);
}
.mobile-panel.is-open{transform:translateX(0);}
.mobile-panel__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-6);}
.mobile-close{width:44px;height:44px;border-radius:10px;border:1px solid var(--border);display:grid;place-items:center;color:var(--ink-2);}
.mobile-panel nav{display:flex;flex-direction:column;gap:var(--sp-1);}
.mobile-panel nav a{
  padding:14px 12px;min-height:48px;border-radius:var(--r-md);
  color:var(--ink);font-weight:500;font-size:16px;
  display:flex;align-items:center;
}
.mobile-panel nav a[aria-current="page"]{background:rgba(29,92,121,.08);color:var(--steel);font-weight:600;}
.mobile-panel .mobile-cta{margin-top:auto;width:100%;}
.panel-mask{
  position:fixed;inset:0;background:rgba(16,42,53,.42);
  opacity:0;visibility:hidden;z-index:110;
  transition:opacity var(--ease),visibility var(--ease);
}
.panel-mask.is-open{opacity:1;visibility:visible;}
body.no-scroll{overflow:hidden;}

/* ===================== 面包屑 ===================== */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--ink-3);
  padding-top:var(--sp-6);
}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--steel);}
.breadcrumb .sep{color:var(--ink-3);}
.breadcrumb [aria-current="page"]{color:var(--ink);font-weight:600;}

/* ===================== 分类页 Hero ===================== */
.cat-hero{position:relative;background:#fff;padding-bottom:var(--sp-16);overflow:hidden;}
.cat-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--border);
}
.hero-row{margin-top:var(--sp-12);align-items:center;}
.hero-title{
  font-size:40px;line-height:1.3;font-weight:700;letter-spacing:.4px;
  color:var(--ink);margin-top:var(--sp-4);
}
.hero-lead{margin-top:var(--sp-4);color:var(--ink-2);font-size:16px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:var(--sp-3);margin-top:var(--sp-8);}
.hero-meta{display:flex;flex-wrap:wrap;gap:var(--sp-6);margin-top:var(--sp-8);}
.hero-meta li{font-size:14px;color:var(--ink-2);display:flex;align-items:center;gap:8px;}
.hero-meta i{color:var(--tundra);font-size:13px;}
.hero-media{position:relative;margin-top:var(--sp-8);}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-lg);background:var(--alt);box-shadow:var(--sh2);
}
.hero-stat{
  position:relative;margin-top:-38px;margin-left:var(--sp-6);
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh3);padding:var(--sp-6) var(--sp-6);
  display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-4);
  max-width:440px;
}
.hero-stat div{text-align:left;}
.hero-stat strong{
  display:block;font-size:26px;font-weight:700;color:var(--steel);
  line-height:1.2;font-variant-numeric:tabular-nums;
}
.hero-stat span{display:block;font-size:13px;color:var(--ink-2);margin-top:2px;}

/* ===================== 面板 / 清单 ===================== */
.panel{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh2);padding:var(--sp-6);height:100%;
  transition:transform var(--ease),box-shadow var(--ease);
}
.panel:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
.panel h3{font-size:20px;font-weight:600;margin-bottom:var(--sp-4);display:flex;align-items:center;gap:10px;}
.panel h3 i{color:var(--steel);font-size:17px;}
.check-list li{
  position:relative;padding-left:24px;margin-bottom:var(--sp-3);
  color:var(--ink-2);font-size:15px;line-height:1.75;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:.62em;
  width:8px;height:8px;border-radius:2px;background:var(--steel);opacity:.9;
}
.check-list li:last-child{margin-bottom:0;}
.check-list strong{color:var(--ink);font-weight:600;}

/* ===================== 编号卡片 ===================== */
.num-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh2);padding:var(--sp-8) var(--sp-6);height:100%;
  transition:transform var(--ease),box-shadow var(--ease);
}
.num-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
.num-card .num{
  display:inline-block;font-size:28px;font-weight:700;line-height:1;
  color:var(--steel);font-variant-numeric:tabular-nums;
  padding-bottom:8px;border-bottom:3px solid var(--rock);margin-bottom:var(--sp-4);
}
.num-card h3{font-size:20px;font-weight:600;margin-bottom:var(--sp-3);}
.num-card p{color:var(--ink-2);font-size:15px;}
.mini-list{margin-top:var(--sp-4);}
.mini-list li{
  position:relative;padding-left:20px;font-size:14px;color:var(--ink-2);
  margin-bottom:8px;line-height:1.7;
}
.mini-list li::before{
  content:"";position:absolute;left:0;top:.6em;width:6px;height:6px;
  border-radius:50%;background:var(--tundra);
}

/* ===================== 流程步骤 ===================== */
.steps{position:relative;}
.step{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh1);padding:var(--sp-6);height:100%;
  transition:transform var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh2);}
.step-ico{
  width:44px;height:44px;border-radius:12px;
  background:rgba(29,92,121,.08);color:var(--steel);
  display:grid;place-items:center;font-size:18px;margin-bottom:var(--sp-4);
}
.step h3{font-size:18px;font-weight:600;margin-bottom:var(--sp-2);}
.step p{font-size:14px;color:var(--ink-2);}
.step-index{
  font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--ink-3);
  display:block;margin-bottom:var(--sp-3);
}

/* ===================== FAQ ===================== */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh1);margin-bottom:var(--sp-3);overflow:hidden;
  transition:background-color var(--ease),box-shadow var(--ease);
}
.faq-item:last-child{margin-bottom:0;}
.faq-item[open]{background:#FAFCFC;box-shadow:var(--sh2);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:var(--sp-4);
  padding:20px var(--sp-6);min-height:44px;
  font-size:17px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  position:relative;flex:0 0 auto;width:22px;height:22px;margin-top:4px;
  transition:transform var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--steel);border-radius:2px;
}
.faq-icon::before{left:10px;top:3px;width:2px;height:16px;}
.faq-icon::after{top:10px;left:3px;height:2px;width:16px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-body{padding:0 var(--sp-6) 22px;color:var(--ink-2);font-size:15px;line-height:1.85;}

/* ===================== 入口卡片 ===================== */
.entry-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh2);overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease);
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
.entry-card__media{overflow:hidden;background:var(--alt);}
.entry-card__media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  transition:transform 260ms cubic-bezier(.2,.7,.3,1);
}
.entry-card:hover .entry-card__media img{transform:scale(1.03);}
.entry-card__body{padding:var(--sp-6);display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1;
  padding:6px 10px;border-radius:999px;
  background:rgba(110,143,106,.14);color:#4C6B49;
  margin-bottom:var(--sp-3);align-self:flex-start;
}
.badge--rock{background:rgba(226,121,74,.14);color:#B25A31;}
.entry-card__body h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:var(--sp-2);}
.entry-card__body p{font-size:14px;color:var(--ink-2);flex:1;}
.entry-card__body .btn-text{margin-top:var(--sp-4);}

/* ===================== CTA 通栏 ===================== */
.cta-band{
  background:linear-gradient(135deg,#174A61 0%,#1D5C79 62%,#22698A 100%);
  border-radius:var(--r-xl);
  padding:var(--sp-16) var(--sp-12);
  color:#fff;position:relative;overflow:hidden;
  box-shadow:var(--sh3);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;
  border-radius:50%;background:rgba(226,121,74,.18);filter:blur(10px);
}
.cta-band h2{font-size:30px;font-weight:700;line-height:1.35;position:relative;z-index:1;}
.cta-band p{margin-top:var(--sp-3);color:rgba(255,255,255,.82);font-size:15px;max-width:640px;position:relative;z-index:1;}
.cta-actions{display:flex;flex-wrap:wrap;gap:var(--sp-3);margin-top:var(--sp-8);position:relative;z-index:1;}
.cta-contact{
  display:flex;flex-wrap:wrap;gap:var(--sp-6);margin-top:var(--sp-8);
  position:relative;z-index:1;font-size:14px;color:rgba(255,255,255,.85);
}
.cta-contact span{display:inline-flex;align-items:center;gap:8px;}
.cta-contact i{color:#F0A57C;}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--foot);color:rgba(255,255,255,.78);padding:var(--sp-16) 0 var(--sp-8);margin-top:var(--sp-24);}
.site-footer .logo{color:#fff;}
.site-footer .logo-mark{background:rgba(255,255,255,.12);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:var(--sp-8);}
.footer-grid > div{padding-left:var(--sp-6);border-left:1px solid rgba(255,255,255,.1);}
.footer-grid > div:first-child{padding-left:0;border-left:0;}
.footer-brand p{margin-top:var(--sp-4);font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);max-width:320px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:var(--sp-4);}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:rgba(255,255,255,.72);}
.footer-col ul li a{color:rgba(255,255,255,.72);}
.footer-col ul li a:hover{color:#fff;}
.footer-bottom{
  margin-top:var(--sp-12);padding-top:var(--sp-6);
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:var(--sp-3);justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.58);
}

/* ===================== 响应式 ===================== */
@media screen and (max-width:1024px){
  .container{padding:0 var(--sp-6);}
  .section{padding:72px 0;}
  .hero-title{font-size:34px;}
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-actions .btn-ghost{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-8);}
  .footer-grid > div{padding-left:0;border-left:0;padding-top:var(--sp-6);border-top:1px solid rgba(255,255,255,.1);}
  .footer-grid > div:first-child{padding-top:0;border-top:0;}
  .cta-band{padding:var(--sp-12) var(--sp-8);}
}
@media screen and (max-width:768px){
  .container{padding:0 var(--sp-4);}
  .section{padding:56px 0;}
  .sec-title{font-size:22px;}
  .hero-title{font-size:28px;}
  .hero-lead{font-size:15px;}
  .hero-row{margin-top:var(--sp-8);}
  .hero-actions .btn{width:100%;}
  .hero-stat{margin:var(--sp-4) 0 0;max-width:100%;padding:var(--sp-4);grid-template-columns:repeat(3,1fr);}
  .hero-stat strong{font-size:20px;}
  .hero-stat span{font-size:12px;}
  .panel,.num-card,.step,.entry-card{box-shadow:var(--sh1);}
  .num-card{padding:var(--sp-6);}
  .faq-item summary{font-size:16px;padding:18px var(--sp-4);}
  .faq-body{padding:0 var(--sp-4) 20px;}
  .cta-band{padding:var(--sp-12) var(--sp-6);border-radius:var(--r-lg);}
  .cta-band h2{font-size:22px;}
  .cta-actions .btn{width:100%;}
  .site-footer{padding:var(--sp-12) 0 var(--sp-6);margin-top:var(--sp-16);}
  .footer-bottom{flex-direction:column;}
}
@media screen and (max-width:520px){
  .logo-text{font-size:16px;}
  .hero-stat{grid-template-columns:1fr;gap:var(--sp-3);}
  .hero-stat div{display:flex;align-items:baseline;gap:10px;}
  .hero-stat strong{font-size:20px;}
  .hero-stat span{margin-top:0;}
  .footer-grid{grid-template-columns:1fr;}
}

/* roulang page: category2 */
:root{
  --c-primary:#1D5C79;
  --c-primary-deep:#164A62;
  --c-accent:#E2794A;
  --c-accent-deep:#C96438;
  --c-green:#6E8F6A;
  --c-text:#16242B;
  --c-text-2:#4A5A61;
  --c-muted:#88979D;
  --c-bg:#F5F7F7;
  --c-card:#FFFFFF;
  --c-alt:#EEF2F3;
  --c-footer:#102A35;
  --c-border:#E4EAEB;
  --r-s:8px;
  --r-m:12px;
  --r-l:16px;
  --r-xl:24px;
  --sh1:0 1px 3px rgba(20,60,80,.06);
  --sh2:0 12px 28px rgba(20,60,80,.08);
  --sh3:0 20px 44px rgba(20,60,80,.12);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-6:24px; --sp-8:32px; --sp-12:48px; --sp-16:64px; --sp-24:96px;
  --section-gap:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  color:var(--c-text);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--c-accent);}
p{margin:0 0 1em;font-size:16px;line-height:1.8;color:var(--c-text-2);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{font-family:inherit;color:var(--c-text);font-weight:700;margin:0;letter-spacing:-.01em;}
h1{font-size:40px;line-height:1.3;}
h2{font-size:30px;line-height:1.35;}
h3{font-size:20px;line-height:1.5;}
h4{font-size:16px;line-height:1.6;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:3px solid rgba(29,92,121,.35);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
.container-narrow{max-width:780px;}
.section{padding:var(--section-gap) 0;}
.section--alt{background:var(--c-alt);}
.section-head{max-width:760px;margin-bottom:var(--sp-8);}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{margin-bottom:var(--sp-3);}
.section-head p{margin:0;font-size:16px;color:var(--c-text-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--c-primary);text-transform:uppercase;margin-bottom:var(--sp-3);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-primary);border-radius:2px;display:inline-block;}

/* ---------- 按钮 ---------- */
.button,.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-m);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1.5px solid transparent;background:transparent;
  cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  margin:0;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh1);}
.btn-primary:hover,.btn-primary:focus{background:var(--c-accent);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover,.btn-ghost:focus{background:rgba(29,92,121,.08);color:var(--c-primary-deep);transform:translateY(-1px);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:var(--sh1);}
.btn-accent:hover,.btn-accent:focus{background:var(--c-accent-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2);}
.btn-light{background:#fff;color:var(--c-primary);}
.btn-light:hover{background:#EAF1F4;color:var(--c-primary-deep);transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;padding:0;border:0;background:none;
  color:var(--c-primary);font-size:14px;font-weight:600;cursor:pointer;
}
.btn-text i{transition:transform .2s ease;}
.btn-text:hover{color:var(--c-accent);}
.btn-text:hover i{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
  background:rgba(110,143,106,.12);color:#3F5B3C;
}
.badge--accent{background:rgba(226,121,74,.12);color:#B0512A;}
.badge--primary{background:rgba(29,92,121,.1);color:var(--c-primary-deep);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--c-bg);
  border-bottom:1px solid transparent;
  transition:background-color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-stuck{background:#fff;border-bottom-color:var(--c-border);box-shadow:var(--sh1);}
.nav-wrap{display:flex;align-items:center;gap:24px;min-height:76px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-text);font-weight:700;}
.logo:hover{color:var(--c-primary);}
.logo-mark{
  width:38px;height:38px;border-radius:11px;background:var(--c-primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;}
.nav-links{display:flex;align-items:center;gap:30px;margin:0 auto;}
.nav-links a{
  position:relative;padding:6px 2px;font-size:15px;font-weight:500;color:var(--c-text-2);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left center;
  transition:transform .22s ease;
}
.nav-links a:hover{color:var(--c-primary);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a[aria-current="page"]{color:var(--c-primary);font-weight:600;}
.nav-links a[aria-current="page"]::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-border);border-radius:10px;
  background:#fff;cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.mobile-panel{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:88vw;z-index:120;
  background:#fff;box-shadow:var(--sh3);
  transform:translateX(105%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:24px 20px 20px;
}
.mobile-panel.is-open{transform:translateX(0);}
.mobile-panel__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.mobile-panel__close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--c-border);background:#fff;
  color:var(--c-text-2);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
}
.mobile-panel__links{display:flex;flex-direction:column;gap:4px;flex:1;}
.mobile-panel__links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 14px;border-radius:var(--r-m);
  color:var(--c-text);font-size:15px;font-weight:500;
}
.mobile-panel__links a:hover{background:var(--c-alt);color:var(--c-primary);}
.mobile-panel__links a[aria-current="page"]{background:rgba(29,92,121,.08);color:var(--c-primary);font-weight:600;}
.mobile-panel__foot{padding-top:16px;border-top:1px solid var(--c-border);}
.panel-mask{
  position:fixed;inset:0;background:rgba(16,42,53,.45);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.panel-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-muted);padding:24px 0 16px;}
.breadcrumb a{color:var(--c-text-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb i{font-size:10px;color:var(--c-muted);}
.breadcrumb .current{color:var(--c-text);font-weight:600;}

/* ---------- Hero ---------- */
.cat-hero{padding-bottom:var(--sp-16);}
.cat-hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.cat-hero h1{margin-bottom:var(--sp-4);}
.cat-hero__sub{font-size:17px;line-height:1.85;color:var(--c-text-2);margin-bottom:var(--sp-6);max-width:560px;}
.cat-hero__points{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:var(--sp-8);}
.cat-hero__actions{display:flex;flex-wrap:wrap;gap:14px;}
.cat-hero__media{
  position:relative;border-radius:var(--r-xl);overflow:hidden;background:var(--c-alt);
  box-shadow:var(--sh2);aspect-ratio:4/3;
}
.cat-hero__media img{width:100%;height:100%;object-fit:cover;}
.cat-hero__badge{
  position:absolute;left:20px;bottom:20px;background:rgba(255,255,255,.95);
  border-radius:999px;padding:8px 16px;font-size:13px;font-weight:600;color:var(--c-primary-deep);
  box-shadow:var(--sh1);display:inline-flex;align-items:center;gap:8px;
}
.ridge{
  display:block;width:100%;height:34px;margin-top:var(--sp-12);
  color:rgba(29,92,121,.28);
}
.ridge path{fill:none;stroke:currentColor;stroke-width:1.4;}

/* ---------- 主体两栏 ---------- */
.layout-two{display:grid;grid-template-columns:270px minmax(0,1fr);gap:48px;align-items:start;}
.toc{
  position:sticky;top:104px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-l);
  padding:24px 20px;box-shadow:var(--sh1);
}
.toc h4{font-size:13px;letter-spacing:.08em;color:var(--c-muted);font-weight:600;margin-bottom:14px;text-transform:uppercase;}
.toc nav{display:flex;flex-direction:column;gap:2px;}
.toc a{
  display:block;padding:10px 12px;border-radius:10px;font-size:14px;line-height:1.5;
  color:var(--c-text-2);border-left:3px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.toc a:hover{background:var(--c-alt);color:var(--c-primary);}
.toc a.is-active{background:rgba(29,92,121,.08);color:var(--c-primary);border-left-color:var(--c-primary);font-weight:600;}
.toc__help{
  margin-top:20px;padding-top:18px;border-top:1px solid var(--c-border);
  font-size:13px;line-height:1.7;color:var(--c-muted);
}
.toc__help a{font-weight:600;color:var(--c-primary);}

.sec-block{padding-bottom:var(--sp-12);margin-bottom:var(--sp-12);border-bottom:1px solid var(--c-border);}
.sec-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.sec-block h2{font-size:26px;margin-bottom:var(--sp-2);scroll-margin-top:110px;}
.sec-block h2 .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-right:12px;
  border:1.5px solid var(--c-primary);color:var(--c-primary);
  font-size:14px;font-weight:700;vertical-align:middle;
}
.sec-block > p{margin-top:var(--sp-3);}
.sec-lead{font-size:16px;color:var(--c-text-2);}
.check-list{margin:var(--sp-6) 0 0;display:grid;gap:12px;}
.check-list li{position:relative;padding-left:24px;font-size:15px;line-height:1.75;color:var(--c-text-2);}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--c-primary);
}
.sec-figure{
  margin:var(--sp-6) 0 0;border-radius:var(--r-l);overflow:hidden;
  background:var(--c-alt);aspect-ratio:16/9;box-shadow:var(--sh1);
}
.sec-figure img{width:100%;height:100%;object-fit:cover;}
.sec-figure figcaption{font-size:13px;color:var(--c-muted);padding:10px 2px 0;text-align:center;}

/* ---------- 对比双栏卡 ---------- */
.compare{
  display:grid;grid-template-columns:1fr 1fr;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-l);
  overflow:hidden;box-shadow:var(--sh2);margin:var(--sp-8) 0 0;
}
.compare__col{padding:28px 26px;}
.compare__col + .compare__col{border-left:1px solid var(--c-border);background:var(--c-alt);}
.compare__col h3{font-size:17px;margin-bottom:16px;display:flex;align-items:center;gap:10px;}
.compare__col h3 i{color:var(--c-primary);font-size:16px;}
.compare__col ul{display:grid;gap:12px;}
.compare__col li{position:relative;padding-left:20px;font-size:14.5px;line-height:1.7;color:var(--c-text-2);}
.compare__col li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--c-green);
}
.compare__col + .compare__col li::before{background:var(--c-accent);}

/* ---------- 卡片 ---------- */
.card{
  display:flex;flex-direction:column;background:var(--c-card);
  border:1px solid var(--c-border);border-radius:var(--r-l);
  box-shadow:var(--sh2);overflow:hidden;height:100%;
  transition:transform .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
.card-media{aspect-ratio:16/10;background:var(--c-alt);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:18px;line-height:1.5;}
.card-body p{font-size:14.5px;line-height:1.7;margin:0;color:var(--c-text-2);}
.card-foot{margin-top:auto;padding-top:8px;}

/* ---------- CTA ---------- */
.cta-bar{
  background:var(--c-footer);border-radius:var(--r-xl);padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
  color:#fff;
}
.cta-bar__text{max-width:560px;}
.cta-bar h2{color:#fff;font-size:28px;margin-bottom:12px;}
.cta-bar p{color:rgba(255,255,255,.76);margin:0;font-size:15px;}
.cta-bar__actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;}
.cta-bar__link{color:#fff;font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:8px;}
.cta-bar__link:hover{color:#99CBDD;}
.cta-bar__link i{transition:transform .2s ease;}
.cta-bar__link:hover i{transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-m);
  margin-bottom:12px;overflow:hidden;transition:background-color .2s ease,border-color .2s ease;
}
.faq-item[open]{background:#FAFCFC;border-color:#D6E2E6;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;cursor:pointer;font-size:16px;font-weight:600;color:var(--c-text);
  list-style:none;min-height:56px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .ico{
  flex:0 0 auto;width:22px;height:22px;color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform .18s ease;
}
.faq-item[open] summary .ico{transform:rotate(45deg);}
.faq-item .faq-answer{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--c-text-2);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.78);padding:72px 0 28px;margin-top:var(--section-gap);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:0;}
.footer-grid > *{padding:0 28px;}
.footer-grid > *:first-child{padding-left:0;}
.footer-grid > * + *{border-left:1px solid rgba(255,255,255,.12);}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo:hover{color:#99CBDD;}
.footer-brand .logo-mark{background:rgba(255,255,255,.12);color:#fff;}
.footer-brand p{color:rgba(255,255,255,.68);font-size:14px;line-height:1.8;margin:0;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:14px;line-height:1.7;color:rgba(255,255,255,.68);}
.footer-col a{color:rgba(255,255,255,.78);font-size:14px;}
.footer-col a:hover{color:#99CBDD;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,.56);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--section-gap:72px;}
  h1{font-size:32px;}
  h2{font-size:24px;}
  .cat-hero__grid{grid-template-columns:1fr;gap:36px;}
  .cat-hero__sub{max-width:none;}
  .layout-two{grid-template-columns:1fr;gap:0;}
  .toc{position:static;margin-bottom:40px;}
  .toc nav{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .toc a{border-left:0;border:1px solid var(--c-border);border-radius:999px;padding:8px 14px;font-size:13px;}
  .toc a.is-active{border-color:var(--c-primary);}
  .toc__help{border-top:0;padding-top:0;margin-top:14px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-grid > *{padding:0 0 28px;}
  .footer-grid > * + *{border-left:0;}
  .footer-grid > *:nth-child(even){padding-left:24px;}
  .footer-grid > *:nth-child(odd){padding-right:24px;}
  .footer-grid > *:nth-child(3){border-top:1px solid rgba(255,255,255,.12);padding-top:28px;}
  .footer-grid > *:nth-child(4){border-top:1px solid rgba(255,255,255,.12);padding-top:28px;}
}
@media (max-width:900px){
  .nav-links{display:none;}
  .nav-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-wrap{gap:16px;}
}
@media (max-width:768px){
  :root{--section-gap:56px;--sp-12:40px;}
  .container{padding-left:16px;padding-right:16px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .cat-hero{padding-bottom:40px;}
  .cat-hero__actions .btn{width:100%;}
  .cat-hero__actions{flex-direction:column;align-items:stretch;gap:12px;}
  .ridge{margin-top:32px;}
  .compare{grid-template-columns:1fr;}
  .compare__col + .compare__col{border-left:0;border-top:1px solid var(--c-border);}
  .cta-bar{padding:32px 24px;gap:24px;}
  .cta-bar h2{font-size:22px;}
  .cta-bar__actions{width:100%;}
  .cta-bar__actions .btn{width:100%;}
  .card{box-shadow:var(--sh1);}
  .card:hover{transform:none;box-shadow:var(--sh1);}
  .sec-block h2{font-size:22px;}
  .sec-block h2 .num{width:28px;height:28px;font-size:13px;margin-right:8px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-grid > *{padding:0 0 24px !important;border-top:0;}
  .footer-grid > * + *{border-top:1px solid rgba(255,255,255,.12);padding-top:24px !important;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  body{font-size:15px;}
  p{font-size:15px;}
  .btn{padding:13px 22px;font-size:14.5px;}
  .logo-text{font-size:15px;}
  .card-body{padding:20px;}
  .compare__col{padding:22px 20px;}
  .cta-bar{border-radius:var(--r-l);}
}