/* roulang page: index */
:root{
  --brand-900:#0E2E47;
  --brand-700:#1B4E7A;
  --brand-500:#2C6EA6;
  --brand-100:#E4EEF6;
  --accent-600:#12857D;
  --accent-100:#E2F4F2;
  --bg:#F5F8FA;
  --surface:#FFFFFF;
  --ink:#16202A;
  --ink-2:#5C6B78;
  --line:#DDE6ED;
  --ok:#2F9E68;
  --err:#C0453C;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-big:18px;
  --sh-1:0 1px 2px rgba(14,46,71,.06),0 2px 8px rgba(14,46,71,.05);
  --sh-2:0 6px 20px rgba(14,46,71,.08);
  --sh-3:0 14px 32px rgba(14,46,71,.12);
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,h6,p,figure{margin:0;}
h1,h2,h3,h4{font-weight:600;line-height:1.32;letter-spacing:.015em;}
table{border-collapse:collapse;width:100%;}
::selection{background:var(--brand-100);color:var(--brand-900);}

/* ============ 容器与通用排版 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media(min-width:1280px){.container{max-width:1320px;}}
.section{padding:var(--sec) 0;}
.section--tight{padding:56px 0;}
.section-head{margin-bottom:40px;max-width:780px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--accent-600);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent-600);border-radius:2px;}
h1{font-size:clamp(30px,4.2vw,44px);}
h2{font-size:clamp(24px,3vw,32px);}
h3{font-size:19px;}
h4{font-size:16px;font-weight:500;}
.lead{font-size:16.5px;line-height:1.8;color:var(--ink-2);max-width:820px;}
.muted{color:var(--ink-2);}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent-600);font-weight:500;
  text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;
  transition:color .2s ease;
}
.text-link:hover{color:var(--brand-700);}
.text-link i{font-size:12px;transition:transform .2s ease;}
.text-link:hover i{transform:translateX(3px);}
.tag{
  display:inline-block;padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:500;letter-spacing:.02em;
  background:var(--brand-100);color:var(--brand-700);
}
.tag--accent{background:var(--accent-100);color:var(--accent-600);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:500;line-height:1.4;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  min-height:46px;text-align:center;
}
.btn:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-500);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-outline{background:transparent;color:var(--brand-700);border-color:var(--brand-700);}
.btn-outline:hover{background:var(--brand-100);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.4);}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-1px);}
.btn-block{width:100%;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 2px 10px rgba(14,46,71,.04);}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-700),var(--accent-600));
  color:#fff;font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 3px 10px rgba(27,78,122,.28);
}
.brand-text{font-size:18px;font-weight:600;color:var(--ink);letter-spacing:.015em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto;}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--ink-2);
  transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:-14px;width:0;height:2px;
  background:var(--accent-600);border-radius:2px;transform:translateX(-50%);
  transition:width .22s ease;
}
.nav-links a:hover{color:var(--brand-700);}
.nav-links a.active{color:var(--brand-700);}
.nav-links a.active::after{width:18px;}
.nav-links a:focus-visible{outline:2px solid var(--accent-600);outline-offset:4px;border-radius:4px;}
.nav-cta{flex:0 0 auto;padding:10px 18px;min-height:42px;font-size:14.5px;}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  background:#fff;border:1px solid var(--line);border-radius:10px;
  align-items:center;justify-content:center;cursor:pointer;color:var(--brand-700);
  transition:background-color .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--brand-100);border-color:var(--brand-100);}
.nav-toggle i{font-size:17px;}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:120;background:#fff;
  display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .3s ease;
  visibility:hidden;
}
.mobile-drawer.is-open{transform:translateX(0);visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:60px;padding:0 20px;border-bottom:1px solid var(--line);}
.drawer-close{
  width:44px;height:44px;border:0;background:transparent;border-radius:10px;
  font-size:20px;color:var(--ink-2);cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:var(--brand-100);color:var(--brand-700);}
.drawer-links{padding:12px 20px 24px;}
.drawer-links a{
  display:flex;align-items:center;min-height:56px;font-size:18px;font-weight:500;
  color:var(--ink);border-bottom:1px solid var(--line);padding-left:14px;
  border-left:3px solid transparent;transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.drawer-links a:hover{color:var(--brand-700);background:#F8FBFD;}
.drawer-links a.active{color:var(--brand-700);border-left-color:var(--accent-600);}
.drawer-foot{margin-top:auto;padding:20px;border-top:1px solid var(--line);}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:76px 0 80px;background:var(--bg);}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(760px 380px at 78% 6%,rgba(18,133,125,.10),transparent 62%),
    radial-gradient(640px 340px at 10% -4%,rgba(44,110,166,.13),transparent 60%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(14,46,71,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(14,46,71,.035) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 82%);
  mask-image:linear-gradient(180deg,#000,transparent 82%);
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.hero-copy h1{color:var(--ink);}
.hero-copy h1 span{color:var(--brand-700);}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:var(--ink-2);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:24px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line);}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);}
.hero-trust i{color:var(--accent-600);font-size:15px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;border-radius:var(--r-big);box-shadow:var(--sh-2);
  aspect-ratio:4/3;object-fit:cover;border:1px solid var(--line);
}
.hero-float{
  position:absolute;left:-22px;bottom:-26px;right:36px;
  background:#fff;border-radius:var(--r-img);box-shadow:var(--sh-2);
  border:1px solid var(--line);
  display:grid;grid-template-columns:repeat(3,1fr);
  padding:18px 8px;
}
.hero-float-item{text-align:center;padding:0 10px;border-left:1px solid var(--line);}
.hero-float-item:first-child{border-left:0;}
.hero-float-item strong{display:block;font-size:22px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.3;}
.hero-float-item span{display:block;font-size:12.5px;color:var(--ink-2);margin-top:2px;}

/* ============ 服务板块（不对称） ============ */
.services-wrap{display:grid;grid-template-columns:220px 1fr;gap:44px;align-items:start;}
.services-aside{position:sticky;top:104px;}
.services-aside .index-num{
  font-size:34px;font-weight:700;color:var(--brand-100);line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.services-aside h2{font-size:24px;margin-top:10px;}
.services-aside p{font-size:14.5px;color:var(--ink-2);margin-top:12px;line-height:1.75;}
.services-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;}
.service-main{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.service-main:hover{transform:translateY(-3px);box-shadow:var(--sh-3);}
.service-main img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.service-main-body{padding:26px 28px 28px;}
.service-main-body h3{margin:14px 0 10px;}
.service-main-body p{font-size:14.5px;line-height:1.75;color:var(--ink-2);margin-bottom:18px;}
.service-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.service-mini{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:26px;display:flex;flex-direction:column;justify-content:center;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.service-mini:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:var(--brand-100);}
.service-mini .ico{
  width:42px;height:42px;border-radius:11px;background:var(--accent-100);color:var(--accent-600);
  display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:14px;
}
.service-mini h3{font-size:17.5px;margin-bottom:8px;}
.service-mini p{font-size:14px;line-height:1.7;color:var(--ink-2);}

/* ============ 数据条 ============ */
.stat-section{padding:0 0 var(--sec);}
.stat-bar{
  background:var(--brand-900);color:#fff;border-radius:var(--r-big);
  padding:56px 40px;position:relative;overflow:hidden;
}
.stat-bar::after{
  content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,133,125,.35),transparent 66%);
}
.stat-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);}
.stat-item{padding:0 28px;border-left:1px solid rgba(255,255,255,.14);}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{font-size:40px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:.01em;}
.stat-num small{font-size:18px;font-weight:600;margin-left:2px;}
.stat-label{font-size:14px;color:rgba(255,255,255,.72);margin-top:8px;line-height:1.6;}
.stat-foot{
  position:relative;z-index:2;margin-top:36px;padding-top:26px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.stat-foot p{font-size:14.5px;color:rgba(255,255,255,.72);max-width:640px;}

/* ============ 案例板块 ============ */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
}
.case-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);}
.case-card img{width:100%;object-fit:cover;height:200px;}
.case-card.is-tall img{height:300px;}
.case-body{padding:22px 24px 24px;}
.case-body h3{font-size:17.5px;margin:12px 0 8px;transition:color .2s ease;}
.case-card:hover .case-body h3{color:var(--brand-700);}
.case-body p{font-size:14px;line-height:1.7;color:var(--ink-2);margin-bottom:14px;}

/* ============ 方案 zigzag ============ */
.zigzag{display:flex;flex-direction:column;gap:64px;}
.zig-row{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.zig-row.reverse .zig-media{order:2;}
.zig-media img{width:100%;border-radius:var(--r-img);aspect-ratio:16/11;object-fit:cover;border:1px solid var(--line);box-shadow:var(--sh-1);}
.zig-num{
  font-size:15px;font-weight:700;color:var(--accent-600);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;
}
.zig-content h3{font-size:23px;margin:10px 0 14px;}
.zig-content > p{font-size:15px;line-height:1.8;color:var(--ink-2);margin-bottom:20px;}
.zig-list{display:flex;flex-direction:column;gap:12px;margin-bottom:22px;}
.zig-list li{display:flex;gap:10px;font-size:15px;color:var(--ink);line-height:1.7;}
.zig-list i{color:var(--accent-600);font-size:13px;margin-top:6px;flex:0 0 auto;}

/* ============ 资讯列表（CMS） ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.news-layout{display:grid;grid-template-columns:6fr 5fr;gap:24px;align-items:start;}
.news-lead{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;display:block;
  transition:transform .2s ease,box-shadow .2s ease;
}
.news-lead:hover{transform:translateY(-3px);box-shadow:var(--sh-3);}
.news-lead img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-lead-body{padding:24px 26px 26px;}
.news-lead-body h3{font-size:21px;margin:12px 0 10px;transition:color .2s ease;}
.news-lead:hover .news-lead-body h3{color:var(--brand-700);}
.news-lead-body p{font-size:14.5px;line-height:1.75;color:var(--ink-2);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:8px 0;}
.news-list li{border-bottom:1px solid var(--line);}
.news-list li:last-child{border-bottom:0;}
.news-list a{
  display:block;padding:18px 24px 18px 24px;position:relative;
  transition:background-color .2s ease;
}
.news-list a::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;
  background:var(--accent-600);border-radius:0 2px 2px 0;opacity:0;transition:opacity .2s ease;
}
.news-list a:hover{background:#F8FBFD;}
.news-list a:hover::before{opacity:1;}
.news-list-title{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:15.5px;font-weight:500;line-height:1.6;color:var(--ink);transition:color .2s ease;
}
.news-list a:hover .news-list-title{color:var(--brand-700);}
.news-list time{display:block;margin-top:8px;font-size:13px;color:var(--ink-2);}
.empty-state{
  grid-column:1/-1;background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;
}
.empty-state i{font-size:30px;color:var(--brand-100);}
.empty-state strong{display:block;margin-top:14px;font-size:16px;color:var(--ink-2);font-weight:600;}
.empty-state span{display:block;margin-top:6px;font-size:14px;color:var(--ink-2);opacity:.8;}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:320px 1fr;gap:52px;align-items:start;}
.faq-aside{position:sticky;top:104px;}
.faq-aside h2{margin-bottom:14px;}
.faq-aside p{font-size:15px;line-height:1.8;color:var(--ink-2);margin-bottom:22px;}
.faq-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-card .accordion{margin:0;border:0;background:transparent;}
.faq-card .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;}
.faq-card .accordion-item:last-child{border-bottom:0;}
.faq-card .accordion-title{
  position:relative;display:block;border:0;background:transparent;
  font-size:17px;font-weight:600;line-height:1.55;color:var(--ink);
  padding:20px 60px 20px 24px;transition:background-color .2s ease,color .2s ease;
}
.faq-card .accordion-title:hover{background:#F8FBFD;color:var(--brand-700);}
.faq-card .accordion-title::before{
  content:"";position:absolute;right:26px;top:50%;width:14px;height:2px;
  background:var(--accent-600);border-radius:2px;transform:translateY(-50%);
}
.faq-card .accordion-title::after{
  content:"";position:absolute;right:32px;top:50%;width:2px;height:14px;
  background:var(--accent-600);border-radius:2px;transform:translateY(-50%);
  transition:transform .22s ease;
}
.faq-card .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) scaleY(0);}
.faq-card .accordion-item.is-active .accordion-title{color:var(--brand-700);}
.faq-card .accordion-content{
  border:0;background:transparent;color:var(--ink-2);
  font-size:15px;line-height:1.8;padding:8px 60px 20px 24px;
}
.faq-card .accordion-content p + p{margin-top:10px;}

/* ============ 联系 CTA ============ */
.contact-section{background:var(--brand-100);}
.contact-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:32px;align-items:start;}
.contact-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:32px;
}
.contact-card h3{font-size:20px;margin-bottom:8px;}
.contact-card > p{font-size:14.5px;color:var(--ink-2);margin-bottom:24px;line-height:1.75;}
.contact-form .field{margin-bottom:18px;}
.contact-form .field label{display:block;font-size:14px;font-weight:500;margin-bottom:8px;color:var(--ink);}
.contact-form .field input,
.contact-form .field select,
.contact-form .field textarea{
  width:100%;height:48px;padding:0 14px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-btn);outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
  appearance:none;-webkit-appearance:none;
}
.contact-form .field select{
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%235C6B78' d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:14px;padding-right:38px;
}
.contact-form .field textarea{height:auto;min-height:118px;padding:12px 14px;line-height:1.7;resize:vertical;}
.contact-form .field input:focus,
.contact-form .field select:focus,
.contact-form .field textarea:focus{border-color:var(--brand-700);box-shadow:0 0 0 3px var(--brand-100);}
.contact-form .field input:invalid:not(:placeholder-shown){border-color:var(--err);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.form-hint{font-size:13px;color:var(--ink-2);margin-top:14px;line-height:1.7;}
.contact-info{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:32px;
}
.contact-info h3{font-size:20px;margin-bottom:22px;}
.info-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);}
.info-item:last-child{border-bottom:0;padding-bottom:0;}
.info-item .ico{
  width:40px;height:40px;flex:0 0 auto;border-radius:11px;
  background:var(--brand-100);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:15px;
}
.info-item strong{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:3px;}
.info-item span{font-size:14.5px;color:var(--ink-2);word-break:break-all;}
.info-note{
  margin-top:22px;padding:16px 18px;border-radius:var(--r-btn);
  background:var(--accent-100);color:var(--brand-900);font-size:13.5px;line-height:1.7;
}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand-500),var(--accent-600));box-shadow:none;}
.footer-brand span{color:#fff;font-size:17px;font-weight:600;letter-spacing:.015em;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:340px;}
.footer-title{color:#fff;font-size:15.5px;font-weight:600;margin-bottom:18px;letter-spacing:.02em;}
.footer-links li{margin-bottom:12px;}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.72);transition:color .2s ease;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-contact li{font-size:14.5px;line-height:1.8;margin-bottom:12px;color:rgba(255,255,255,.72);display:flex;gap:10px;}
.footer-contact i{color:var(--accent-600);margin-top:6px;font-size:13px;}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.14);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,.6);
}
.footer-bottom nav{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:#fff;}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--brand-700);color:#fff;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;
  transform:translateY(10px);transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background-color .2s ease;
  z-index:90;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-500);}

/* ============ 动效 ============ */
.fade-up{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
.fade-up.is-in{opacity:1;transform:translateY(0);}

/* ============ 响应式 ============ */
@media(max-width:1180px){
  .services-wrap{grid-template-columns:1fr;gap:28px;}
  .services-aside{position:static;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .faq-aside{position:static;}
}
@media(max-width:1023px){
  :root{--sec:64px;}
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-float{position:static;right:auto;left:auto;bottom:auto;margin-top:20px;}
  .services-grid{grid-template-columns:1fr;}
  .service-side{grid-template-rows:auto;grid-template-columns:1fr 1fr;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:32px 0;}
  .stat-item:nth-child(3){border-left:0;padding-left:0;}
  .news-layout{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media(max-width:767px){
  .case-grid{grid-template-columns:1fr;}
  .case-card img,.case-card.is-tall img{height:220px;}
  .zig-row{grid-template-columns:1fr;gap:26px;}
  .zig-row.reverse .zig-media{order:0;}
  .zigzag{gap:48px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .stat-bar{padding:40px 24px;}
}
@media(max-width:639px){
  :root{--sec:48px;}
  .container{padding:0 20px;}
  .nav-inner{height:60px;}
  .hero{padding:48px 0 56px;}
  .hero-trust{gap:14px 20px;}
  .hero-float{grid-template-columns:1fr;gap:0;padding:8px 0;}
  .hero-float-item{border-left:0;border-top:1px solid var(--line);padding:12px 0;}
  .hero-float-item:first-child{border-top:0;}
  .hero-actions .btn{width:100%;}
  .service-side{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:26px 0;}
  .stat-item{padding:0 16px;}
  .stat-num{font-size:32px;}
  .form-row{grid-template-columns:1fr;}
  .contact-card,.contact-info{padding:24px 20px;}
  .news-lead-body{padding:20px;}
  .faq-card .accordion-title{font-size:16px;padding:18px 54px 18px 20px;}
  .faq-card .accordion-content{padding:8px 54px 18px 20px;}
  .to-top{right:16px;bottom:16px;}
}

/* roulang page: article */
:root{
  --brand-900:#0E2E47;
  --brand-700:#1B4E7A;
  --brand-500:#2C6EA6;
  --brand-100:#E4EEF6;
  --accent-600:#12857D;
  --accent-100:#E2F4F2;
  --bg:#F5F8FA;
  --surface:#FFFFFF;
  --ink:#16202A;
  --ink-2:#5C6B78;
  --line:#DDE6ED;
  --ok:#2F9E68;
  --err:#C0453C;
  --sh-1:0 1px 2px rgba(14,46,71,.06),0 2px 8px rgba(14,46,71,.05);
  --sh-2:0 6px 20px rgba(14,46,71,.08);
  --sh-3:0 14px 32px rgba(14,46,71,.12);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --font-cn:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:inherit}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
h1,h2,h3,h4{font-weight:600;letter-spacing:.01em;line-height:1.4}
input,select,textarea{font-family:inherit}
table{border-collapse:collapse}
body,button,input,select,textarea{font-family:var(--font-cn)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (min-width:1280px){.container{max-width:1320px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-outline{background:var(--surface);border-color:var(--brand-700);color:var(--brand-700)}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0)}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px}
.btn:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(14,46,71,.02)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:600;color:var(--brand-900);letter-spacing:.01em}
.brand-mark{
  width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-700),var(--accent-600));
  color:#fff;font-size:15px;font-weight:700;flex:none;
}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--ink-2);padding:6px 0}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:-4px;width:18px;height:2px;border-radius:2px;
  background:var(--accent-600);transform:translateX(-50%) scaleX(0);transition:transform .2s ease;
}
.nav-links a:hover{color:var(--brand-700)}
.nav-links a:hover::after{transform:translateX(-50%) scaleX(1)}
.nav-links a.active{color:var(--brand-700)}
.nav-links a.active::after{transform:translateX(-50%) scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-900);transition:transform .2s ease}
.nav-toggle:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px}

/* ---------- 移动端面板 ---------- */
.mobile-panel{position:fixed;inset:0;z-index:90;background:#fff;display:flex;flex-direction:column;padding:0 20px 32px;overflow-y:auto}
.mobile-panel[hidden]{display:none!important}
.mp-head{display:flex;align-items:center;justify-content:space-between;height:60px;border-bottom:1px solid var(--line)}
.mp-close{width:44px;height:44px;border-radius:10px;display:grid;place-items:center;font-size:20px;color:var(--ink);border:1px solid var(--line)}
.mp-links{padding:20px 0 0}
.mp-links a{position:relative;display:block;font-size:18px;line-height:56px;color:var(--ink);border-bottom:1px solid var(--line);padding-left:14px}
.mp-links a.active{color:var(--brand-700)}
.mp-links a.active::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:22px;border-radius:2px;background:var(--accent-600)}
.mp-cta{margin-top:26px;width:100%}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);padding:28px 0 0}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .sep{color:#AFC0CD}
.breadcrumb .current{color:var(--ink);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-head{max-width:820px;margin:0 auto;padding:26px 0 0}
.article-head h1{
  font-size:clamp(28px,3.8vw,42px);line-height:1.34;letter-spacing:.01em;
  color:var(--ink);margin-top:16px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;margin-top:20px;font-size:13px;color:var(--ink-2)}
.article-meta .m-item{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--accent-600);font-size:13px}
.article-meta b{font-family:var(--font-num);font-weight:600;color:var(--ink)}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);font-size:13px;font-weight:500;
}

/* ---------- 封面 ---------- */
.article-cover{
  margin:34px auto 0;max-width:1200px;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-2);background:linear-gradient(135deg,var(--brand-100),var(--accent-100));
}
.article-cover img{width:100%;aspect-ratio:16/7;object-fit:cover;border-radius:var(--r-img)}
.article-cover figcaption{font-size:13px;color:var(--ink-2);text-align:center;padding:12px 16px 14px;background:var(--surface)}

/* ---------- 正文 ---------- */
.article-body{
  max-width:820px;margin:52px auto 0;font-size:17px;line-height:1.9;color:var(--ink);
  overflow-wrap:break-word;word-break:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em;max-width:100%}
.article-body h2{
  position:relative;font-size:clamp(21px,2.4vw,26px);line-height:1.45;
  margin:44px 0 18px;padding-left:15px;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:3px;border-radius:2px;background:var(--accent-600);
}
.article-body h3{font-size:19px;margin:32px 0 14px;line-height:1.5;color:var(--ink)}
.article-body h4{font-size:16.5px;font-weight:500;margin:24px 0 10px;color:var(--ink)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:24px}
.article-body ul li{list-style:disc}
.article-body ol li{list-style:decimal}
.article-body li{margin-bottom:8px;line-height:1.8}
.article-body li::marker{color:var(--brand-500)}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--brand-100);
  border-left:3px solid var(--accent-600);border-radius:0 10px 10px 0;
  font-size:15.5px;font-style:italic;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:24px 0;box-shadow:var(--sh-1)}
.article-body figure{margin:24px 0}
.article-body figure img{margin:0}
.article-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:8px;font-style:normal}
.article-body a{color:var(--accent-600);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-700)}
.article-body strong{font-weight:600;color:var(--brand-900)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-body table{width:100%;min-width:520px;font-size:15px;margin:20px 0}
.article-body th{background:var(--brand-100);color:var(--brand-900);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--line)}
.article-body .table-wrap,.article-body .table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:20px 0}
.article-body .table-wrap table{margin:0}
.article-body code{
  background:var(--brand-100);color:var(--brand-900);border-radius:6px;
  padding:2px 7px;font-size:14.5px;font-family:var(--font-num);
}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:60px 26px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:18px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-100),var(--accent-100));color:var(--brand-700);font-size:26px;
}
.empty-state h2{font-size:22px;margin-bottom:10px;padding-left:0}
.empty-state h2::before{display:none}
.empty-state p{font-size:15px;color:var(--ink-2);margin:0 0 22px}
.empty-state .btn{margin:0 auto}

/* ---------- 文末导航 ---------- */
.article-foot{max-width:820px;margin:60px auto 0;padding-top:28px;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.foot-nav-item{
  display:flex;flex-direction:column;gap:6px;padding:18px 20px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.foot-nav-item:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:var(--brand-100)}
.foot-nav-item:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px}
.fn-label{font-size:12.5px;color:var(--ink-2);letter-spacing:.02em;display:inline-flex;align-items:center;gap:6px}
.fn-label i{color:var(--accent-600)}
.fn-title{font-size:15px;font-weight:600;color:var(--ink)}
.foot-nav-item:hover .fn-title{color:var(--brand-700)}

/* ---------- 文章尾部 CTA ---------- */
.article-cta{
  margin-top:80px;padding:60px 0;
  background:
    radial-gradient(900px 320px at 10% 0%, rgba(18,133,125,.08), transparent 62%),
    radial-gradient(700px 300px at 100% 100%, rgba(27,78,122,.08), transparent 60%),
    var(--brand-100);
}
.article-cta .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.article-cta h2{font-size:clamp(22px,2.6vw,28px);color:var(--brand-900);margin-bottom:10px}
.article-cta p{font-size:15.5px;color:var(--ink-2);max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:600;margin-bottom:16px}
.footer-brand .brand-mark{
  width:30px;height:30px;border-radius:8px;font-size:13px;
  background:linear-gradient(135deg,var(--brand-500),var(--accent-600));
}
.footer-desc{font-size:14px;line-height:1.85;max-width:360px;color:rgba(255,255,255,.72)}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links li{margin-bottom:10px;font-size:14px}
.footer-links a{color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-contact li{display:flex;align-items:flex-start;gap:9px;margin-bottom:12px;font-size:14px}
.footer-contact i{color:#5EC9C0;width:16px;text-align:center;margin-top:4px;flex:none}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:13px;
}
.footer-bottom nav{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--brand-700);color:#fff;display:grid;place-items:center;z-index:70;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,background-color .2s ease,visibility .25s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-500)}
.to-top:focus-visible{outline:2px solid var(--accent-600);outline-offset:3px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:34px}
}
@media (max-width:1023px){
  .container{padding:0 28px}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn-outline{display:none}
  .article-foot{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-desc{max-width:100%}
}
@media (max-width:767px){
  .article-body{font-size:16.5px;line-height:1.88}
  .article-cta{padding:48px 0}
  .article-cta .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}
@media (max-width:639px){
  .container{padding:0 20px}
  .header-inner{height:60px}
  .logo{font-size:17px}
  .brand-mark{width:30px;height:30px;border-radius:8px;font-size:13px}
  .breadcrumb{padding-top:20px}
  .article-head{padding-top:20px}
  .article-cover{border-radius:10px}
  .article-cover img{aspect-ratio:16/10}
  .article-body{margin-top:36px;font-size:16px}
  .article-body h2{margin:34px 0 14px}
  .article-foot{grid-template-columns:1fr;gap:12px;margin-top:44px}
  .to-top{right:16px;bottom:16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .btn{width:100%}
  .cta-actions{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --brand-900:#0E2E47;
  --brand-700:#1B4E7A;
  --brand-500:#2C6EA6;
  --brand-100:#E4EEF6;
  --accent-600:#12857D;
  --accent-100:#E2F4F2;
  --bg:#F5F8FA;
  --surface:#FFFFFF;
  --ink:#16202A;
  --ink-2:#5C6B78;
  --line:#DDE6ED;
  --ok:#2F9E68;
  --err:#C0453C;
  --sh-1:0 1px 2px rgba(14,46,71,.06),0 2px 8px rgba(14,46,71,.05);
  --sh-2:0 6px 20px rgba(14,46,71,.08);
  --sh-3:0 14px 32px rgba(14,46,71,.12);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-block:18px;
  --section:88px;
  --font:"Inter","Helvetica Neue",-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
@media (max-width:1023px){:root{--section:64px}}
@media (max-width:639px){:root{--section:48px}}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img)}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
p{margin:0 0 16px}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:.015em;color:var(--ink)}
h1{font-size:clamp(30px,4.2vw,44px);line-height:1.28}
h2{font-size:clamp(24px,3vw,32px);line-height:1.34}
h3{font-size:19px;line-height:1.45}
h4{font-size:16.5px;font-weight:500}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:var(--brand-100);color:var(--brand-900)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (min-width:1280px){.container{max-width:1320px}}
@media (max-width:639px){.container{padding:0 20px}}

/* Foundation 覆盖 */
.row{max-width:none;margin-left:-12px;margin-right:-12px}
.column,.columns{padding-left:12px;padding-right:12px}
a.button,.button{background:var(--brand-700);border-radius:var(--r-btn)}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.4;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn i{font-size:14px}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:#fff;border-color:var(--brand-700);color:var(--brand-700)}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--brand-700);border-color:#fff}
.btn-light:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px)}
.btn-line{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-line:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.85)}
.link-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent-600);font-weight:600;font-size:15px;
  text-decoration:underline;text-underline-offset:3px;
}
.link-text:hover{color:var(--brand-700)}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--accent-100);color:var(--accent-600);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.tag{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.93);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(14,46,71,.05)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em;white-space:nowrap}
.logo:hover{color:var(--brand-700)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:linear-gradient(135deg,var(--brand-700),var(--accent-600));
  color:#fff;display:grid;place-items:center;font-size:16px;font-weight:700;
  box-shadow:0 4px 12px rgba(27,78,122,.25);
}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--ink-2);padding:6px 0;white-space:nowrap}
.nav-links a:hover{color:var(--brand-700)}
.nav-links a.active{color:var(--brand-700);font-weight:600}
.nav-links a.active::after{
  content:"";position:absolute;left:50%;bottom:-6px;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--accent-600);
}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-actions .btn{min-height:42px;padding:10px 20px;font-size:14.5px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--brand-700);font-size:18px;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle:hover{background:var(--brand-100)}
@media (max-width:1023px){
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:inline-flex}
  .nav-inner{height:60px}
}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:120;background:#fff;
  transform:translateX(100%);transition:transform .3s ease;
  display:flex;flex-direction:column;padding:18px 20px 32px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;min-height:48px;margin-bottom:18px}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:#fff;color:var(--ink-2);font-size:18px;cursor:pointer;
}
.drawer-close:hover{background:var(--brand-100);color:var(--brand-700)}
.drawer-links a{
  display:flex;align-items:center;min-height:56px;padding:0 4px 0 16px;
  font-size:18px;font-weight:500;color:var(--ink);
  border-bottom:1px solid var(--line);position:relative;
}
.drawer-links a:hover{color:var(--brand-700);background:#F8FBFD}
.drawer-links a.active{color:var(--brand-700);font-weight:600}
.drawer-links a.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:2px;background:var(--accent-600);
}
.drawer-cta{margin-top:26px}
.drawer-cta .btn{width:100%}

/* 页头 */
.page-hero{position:relative;padding:56px 0 52px;background:var(--bg);border-bottom:1px solid var(--line);overflow:hidden}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.20;
}
.page-hero .hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.88),rgba(245,248,250,.96));
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .sep{color:#A9B7C3}
.breadcrumb .current{color:var(--ink);font-weight:600}
.page-hero h1{max-width:860px;margin:14px 0 16px}
.hero-lead{max-width:760px;font-size:16.5px;line-height:1.85;color:var(--ink-2);margin:0}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}

/* 主体布局 */
.layout-grid{
  display:grid;grid-template-columns:250px minmax(0,1fr);
  gap:44px;align-items:start;
  padding-top:var(--section);padding-bottom:var(--section);
}
@media (max-width:1023px){
  .layout-grid{grid-template-columns:1fr;gap:32px}
}
.side-nav{
  position:sticky;top:100px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.side-title{
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--ink-2);
  text-transform:uppercase;margin:0 0 14px;
}
.side-nav ul li a{
  display:block;padding:9px 0 9px 14px;position:relative;
  font-size:14.5px;color:var(--ink-2);border-radius:6px;
}
.side-nav ul li a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:2px;background:var(--accent-600);transition:height .2s ease;
}
.side-nav ul li a:hover{color:var(--brand-700);background:#F8FBFD}
.side-nav ul li a:hover::before{height:18px}
.side-nav ul li + li{border-top:1px solid var(--line)}
.side-cta{width:100%;margin-top:18px}
@media (max-width:1023px){
  .side-nav{position:static}
  .side-nav ul{display:flex;flex-wrap:wrap;gap:8px}
  .side-nav ul li+li{border-top:0}
  .side-nav ul li a{padding:8px 14px;border:1px solid var(--line);border-radius:999px;font-size:13.5px;background:#fff}
  .side-nav ul li a::before{display:none}
  .side-cta{max-width:280px}
}

/* 内容块 */
.content-block{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:36px;box-shadow:var(--sh-1);margin-bottom:26px;
}
.content-block:last-child{margin-bottom:0}
@media (max-width:639px){.content-block{padding:24px 20px}}
.block-index{
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--accent-600);
  margin-bottom:12px;
}
.content-block h2{margin-bottom:14px}
.content-block h3{margin:26px 0 10px;font-size:18px}
.content-block p{color:var(--ink-2);max-width:760px}
.content-block p strong{color:var(--ink);font-weight:600}
.media-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:center}
.media-row.reverse .media-text{order:2}
.media-row.reverse .media-fig{order:1}
@media (max-width:860px){
  .media-row{grid-template-columns:1fr;gap:22px}
  .media-row.reverse .media-text{order:1}
  .media-row.reverse .media-fig{order:2}
}
.media-fig{margin:0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1)}
.media-fig img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.media-fig figcaption{font-size:13px;color:var(--ink-2);padding:10px 14px;background:#F8FBFD;text-align:center}

.dot-list{margin:14px 0 0}
.dot-list li{
  position:relative;padding:7px 0 7px 22px;font-size:15px;color:var(--ink-2);line-height:1.7;
}
.dot-list li::before{
  content:"";position:absolute;left:2px;top:16px;
  width:7px;height:7px;border-radius:50%;background:var(--accent-600);opacity:.85;
}
.dot-list li strong{color:var(--ink);font-weight:600}

/* 要点清单 */
.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:20px}
@media (max-width:767px){.checklist{grid-template-columns:1fr}}
.checklist li{
  display:flex;gap:12px;align-items:flex-start;
  background:#F8FBFD;border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;font-size:14.8px;line-height:1.7;color:var(--ink-2);
}
.checklist li i{
  color:var(--accent-600);font-size:15px;margin-top:4px;flex:0 0 auto;
}
.checklist li span strong{display:block;color:var(--ink);font-weight:600;margin-bottom:2px;font-size:15px}

/* 数据条 */
.stat-bar{
  background:var(--brand-900);border-radius:var(--r-block);
  padding:48px 36px;margin:0 auto;
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
}
.stat-item{
  padding:0 22px;border-left:1px solid rgba(255,255,255,.14);
}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{
  font-size:clamp(28px,3.4vw,40px);font-weight:700;line-height:1.1;color:#fff;
  font-variant-numeric:tabular-nums;letter-spacing:.01em;
}
.stat-num small{font-size:16px;font-weight:600;margin-left:4px}
.stat-label{font-size:14px;color:rgba(255,255,255,.72);margin-top:8px;line-height:1.6}
@media (max-width:900px){
  .stat-bar{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 0;padding:36px 26px}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
}
@media (max-width:520px){
  .stat-item{padding:0 14px}
  .stat-num{font-size:28px}
}

/* FAQ */
.faq-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:none;border:0;cursor:pointer;text-align:left;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.55;
  transition:background-color .2s ease,color .2s ease;
}
.faq-q:hover{background:#F8FBFD;color:var(--brand-700)}
.faq-icon{
  position:relative;flex:0 0 20px;width:20px;height:20px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--accent-600);border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-icon::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.faq-a p{
  font-size:15px;line-height:1.85;color:var(--ink-2);
  padding:0 24px 22px;margin:0;
}
@media (max-width:639px){
  .faq-q{padding:18px 18px;font-size:16px}
  .faq-a p{padding:0 18px 18px}
}

/* CTA 通栏 */
.cta-band{
  background:linear-gradient(120deg,var(--brand-700),var(--brand-900));
  color:#fff;padding:64px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-inner h2{color:#fff;margin-bottom:10px;font-size:clamp(22px,2.6vw,30px)}
.cta-inner p{color:rgba(255,255,255,.78);margin:0;max-width:640px;font-size:15.5px;line-height:1.8}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
@media (max-width:767px){
  .cta-band{padding:48px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 200px}
}

/* 相关链接 */
.related{padding:var(--section) 0}
.section-head{margin-bottom:32px}
.section-head .eyebrow{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--accent-600);margin-bottom:10px;display:block}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--ink-2);max-width:720px;margin:0}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
@media (max-width:767px){.related-grid{grid-template-columns:1fr}}
.related-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#CBDCE9}
.related-card h3{font-size:18px;margin:0}
.related-card p{color:var(--ink-2);font-size:14.5px;line-height:1.75;margin:0}
.related-card .link-text{margin-top:auto}

/* 页脚 */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 44px;
}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:34px;padding:52px 0 36px}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr;gap:30px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.72);margin:16px 0 0;max-width:330px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin:0 0 16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;margin-bottom:12px;color:rgba(255,255,255,.72)}
.footer-contact i{color:var(--accent-100);margin-top:5px;font-size:13px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0;border-top:1px solid rgba(255,255,255,.14);
  font-size:13.5px;color:rgba(255,255,255,.6);
}
.footer-bottom nav a{color:rgba(255,255,255,.72);margin-left:20px}
.footer-bottom nav a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
@media (max-width:639px){.footer-bottom nav a{margin:0 16px 0 0}}

/* 返回顶部 */
#backTop{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--brand-700);
  box-shadow:var(--sh-2);cursor:pointer;font-size:16px;
  display:grid;place-items:center;opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease,transform .2s ease;
  z-index:90;
}
#backTop.show{opacity:1;visibility:visible}
#backTop:hover{transform:translateY(-2px);background:var(--brand-100)}
@media (max-width:639px){#backTop{right:16px;bottom:16px}}

/* roulang page: category2 */
:root{
  --brand-900:#0E2E47;
  --brand-700:#1B4E7A;
  --brand-500:#2C6EA6;
  --brand-100:#E4EEF6;
  --accent-600:#12857D;
  --accent-100:#E2F4F2;
  --bg:#F5F8FA;
  --surface:#FFFFFF;
  --ink:#16202A;
  --ink-2:#5C6B78;
  --line:#DDE6ED;
  --ok:#2F9E68;
  --err:#C0453C;
  --sh-1:0 1px 2px rgba(14,46,71,.06),0 2px 8px rgba(14,46,71,.05);
  --sh-2:0 6px 20px rgba(14,46,71,.08);
  --sh-3:0 14px 32px rgba(14,46,71,.12);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-block:18px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Inter","Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-500);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
button{font:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;}

/* ===== Foundation 栅格定制 ===== */
.row{max-width:none;margin-left:-12px;margin-right:-12px;}
.row::before,.row::after{content:"";display:table;clear:both;}
.column,.columns{padding-left:12px;padding-right:12px;}
.card{
  margin-bottom:0;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--surface);
  box-shadow:var(--sh-1);
  color:var(--ink);
  overflow:visible;
}

/* ===== 容器与板块 ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (min-width:1280px){.container{max-width:1320px;}}
@media (max-width:639px){.container{padding:0 20px;}}

.section{padding:88px 0;}
.section--tight{padding-top:0;}
.section--soft{background:var(--brand-100);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{
  font-size:clamp(24px,3vw,32px);
  font-weight:600;
  letter-spacing:.01em;
  color:var(--brand-900);
  line-height:1.35;
}
.section-head .section-sub{margin-top:14px;font-size:16px;color:var(--ink-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--accent-600);
  background:var(--accent-100);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:18px;
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:#fff;color:var(--brand-700);border-color:var(--brand-700);}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn-light{background:#fff;color:var(--brand-900);}
.btn-light:hover{background:var(--brand-100);color:var(--brand-900);transform:translateY(-1px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--accent-600);
  border-bottom:1px solid rgba(18,133,125,.4);
  padding-bottom:2px;min-height:auto;
}
.btn-text:hover{color:var(--brand-700);border-bottom-color:var(--brand-700);}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 2px 10px rgba(14,46,71,.04);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:18px;font-weight:600;letter-spacing:.01em;}
.brand:hover{color:var(--brand-700);}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand-700),var(--accent-600));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 0;
  font-size:15px;font-weight:500;
  color:var(--ink-2);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:0;height:2px;background:var(--accent-600);
  transform:translateX(-50%);
  transition:width .2s ease;
}
.nav-links a:hover{color:var(--brand-700);}
.nav-links a.active{color:var(--brand-700);}
.nav-links a.active::after{width:18px;}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--brand-700);
  align-items:center;justify-content:center;
  font-size:18px;
}
.nav-toggle:hover{background:var(--brand-100);}

.mobile-panel{
  position:fixed;inset:0;z-index:120;
  background:#fff;
  padding:20px;
  display:flex;flex-direction:column;
  transform:translateX(100%);
  transition:transform .28s ease;
  visibility:hidden;
}
.mobile-panel.is-open{transform:translateX(0);visibility:visible;}
.mobile-panel__top{display:flex;align-items:center;justify-content:space-between;height:56px;}
.mobile-panel__close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:18px;
}
.mobile-panel__links{margin-top:16px;display:flex;flex-direction:column;}
.mobile-panel__links a{
  display:flex;align-items:center;
  min-height:56px;
  font-size:18px;font-weight:500;
  color:var(--ink);
  border-left:3px solid transparent;
  padding-left:14px;
  border-bottom:1px solid var(--line);
}
.mobile-panel__links a.active{color:var(--brand-700);border-left-color:var(--accent-600);background:#F8FBFD;}
.mobile-panel__foot{margin-top:auto;padding-top:20px;}

/* ===== 页头 ===== */
.page-hero{
  position:relative;
  padding:64px 0 72px;
  text-align:center;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero__bg{
  position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  opacity:.18;
}
.page-hero__mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.88),rgba(245,248,250,.97));
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;justify-content:center;gap:8px;
  font-size:13px;color:var(--ink-2);
  margin-bottom:22px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:#A9B7C2;}
.breadcrumb .current{color:var(--ink);font-weight:500;}
.page-hero h1{
  font-size:clamp(30px,4.2vw,44px);
  font-weight:600;
  line-height:1.35;
  letter-spacing:.01em;
  color:var(--brand-900);
  max-width:900px;
  margin:0 auto;
}
.page-hero h1 em{font-style:normal;color:var(--brand-700);}
.page-hero .hero-sub{
  margin:20px auto 0;
  max-width:720px;
  font-size:17px;
  color:var(--ink-2);
  line-height:1.8;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px;}
.hero-facts{
  display:flex;flex-wrap:wrap;justify-content:center;gap:14px 32px;
  margin-top:32px;
  font-size:14px;color:var(--ink-2);
}
.hero-facts li{display:flex;align-items:center;gap:8px;}
.hero-facts i{color:var(--accent-600);font-size:13px;}

/* ===== 三卡片分栏 ===== */
.split-cards{
  display:grid;
  grid-template-columns:1.15fr 1fr .85fr;
  gap:24px;
  align-items:start;
}
.split-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:26px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
  height:100%;
}
.split-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#CBDCE8;}
.split-card__cover{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);
  margin-bottom:20px;
  background:linear-gradient(135deg,var(--brand-100),var(--accent-100));
}
.split-card h3{font-size:20px;font-weight:600;color:var(--brand-900);line-height:1.45;}
.split-card p{margin-top:12px;font-size:14.5px;line-height:1.7;color:var(--ink-2);}
.split-card .card-foot{margin-top:auto;padding-top:18px;}
.split-card--accent{
  background:linear-gradient(160deg,#FFFFFF 0%,#F3FAF9 100%);
  border-color:#CFE7E4;
}
.tick-list{display:flex;flex-direction:column;gap:12px;margin-top:18px;}
.tick-list li{
  position:relative;
  padding-left:26px;
  font-size:14.5px;
  line-height:1.65;
  color:var(--ink);
}
.tick-list li::before{
  content:"";
  position:absolute;left:6px;top:9px;
  width:7px;height:7px;border-radius:50%;
  background:var(--accent-600);
  box-shadow:0 0 0 3px var(--accent-100);
}
.tag{
  display:inline-flex;align-items:center;
  font-size:12.5px;font-weight:600;
  color:var(--brand-700);
  background:var(--brand-100);
  border-radius:999px;
  padding:4px 12px;
  letter-spacing:.02em;
}
.tag--accent{color:var(--accent-600);background:var(--accent-100);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}

/* ===== 数据条 ===== */
.stats-band{background:var(--brand-900);color:#fff;padding:56px 0;}
.stats-band .stats-title{
  font-size:15px;font-weight:600;letter-spacing:.04em;
  color:rgba(255,255,255,.72);
  margin-bottom:32px;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stats-grid > div{padding:0 26px;border-left:1px solid rgba(255,255,255,.14);}
.stats-grid > div:first-child{border-left:0;padding-left:0;}
.stats-num{
  font-size:clamp(32px,3.6vw,40px);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  line-height:1.15;
  color:#fff;
}
.stats-label{margin-top:8px;font-size:14px;line-height:1.6;color:rgba(255,255,255,.72);}
.stats-foot{margin-top:36px;}

/* ===== 图文对照 ===== */
.compare-block{padding:64px 0;border-bottom:1px solid var(--line);}
.compare-block:last-child{border-bottom:0;padding-bottom:0;}
.compare-block:first-child{padding-top:0;}
.compare-media{
  position:relative;
  border-radius:var(--r-block);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  background:linear-gradient(135deg,var(--brand-100),var(--accent-100));
}
.compare-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.compare-index{
  display:inline-flex;align-items:center;gap:10px;
  font-size:14px;font-weight:600;color:var(--accent-600);
  margin-bottom:14px;
}
.compare-index span{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;
  background:var(--accent-100);color:var(--accent-600);
  font-size:14px;
}
.compare-text h3{font-size:clamp(20px,2.3vw,24px);font-weight:600;color:var(--brand-900);line-height:1.45;}
.compare-text p{margin-top:14px;font-size:15.5px;line-height:1.8;color:var(--ink-2);}
.compare-text .btn-text{margin-top:20px;}

/* ===== 流程 ===== */
.step-card{
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px 24px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:16px;font-weight:700;
  margin-bottom:18px;
}
.step-card h3{font-size:19px;font-weight:600;color:var(--brand-900);}
.step-card p{margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--ink-2);}

/* ===== FAQ ===== */
.faq-list{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:background-color .2s ease,color .2s ease;
}
.faq-q:hover{background:#F8FBFD;color:var(--brand-700);}
.faq-icon{
  position:relative;
  flex:0 0 20px;width:20px;height:20px;
  border-radius:50%;
  border:1px solid var(--line);
  background:#fff;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--brand-700);
  transform:translate(-50%,-50%);
  transition:opacity .2s ease,transform .2s ease;
}
.faq-icon::before{width:10px;height:2px;}
.faq-icon::after{width:2px;height:10px;}
.faq-item.is-open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{
  padding:0 24px 20px;
  margin-top:-4px;
  font-size:15px;line-height:1.8;color:var(--ink-2);
}

/* ===== 联系与表单 ===== */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:start;}
.form-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field--full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:500;color:var(--ink);}
.field input,.field select,.field textarea{
  width:100%;
  min-height:48px;
  padding:12px 14px;
  font-family:inherit;font-size:15px;color:var(--ink);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  transition:border-color .2s ease,box-shadow .2s ease;
  appearance:none;
}
.field textarea{min-height:120px;resize:vertical;line-height:1.7;}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#C6D8E5;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brand-700);
  box-shadow:0 0 0 3px var(--brand-100);
}
.field.is-error input,.field.is-error select,.field.is-error textarea{border-color:var(--err);box-shadow:none;}
.field-note{font-size:13px;color:var(--err);display:none;}
.field.is-error .field-note{display:block;}
.form-actions{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
.form-status{
  display:none;
  grid-column:1 / -1;
  padding:12px 16px;
  border-radius:var(--r-btn);
  font-size:14px;
  background:rgba(47,158,104,.1);
  color:var(--ok);
  border:1px solid rgba(47,158,104,.25);
}
.form-status.is-visible{display:block;}

.info-card{
  background:var(--brand-900);
  color:#fff;
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-2);
}
.info-card h3{font-size:19px;font-weight:600;}
.info-card > p{margin-top:10px;font-size:14.5px;line-height:1.75;color:rgba(255,255,255,.72);}
.info-list{margin-top:22px;display:flex;flex-direction:column;gap:18px;}
.info-list li{display:flex;gap:14px;align-items:flex-start;}
.info-list i{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.1);
  color:#8FD7D1;font-size:14px;
}
.info-list strong{display:block;font-size:15px;font-weight:600;color:#fff;}
.info-list span{display:block;font-size:14px;color:rgba(255,255,255,.72);line-height:1.6;}

/* ===== CTA 条带 ===== */
.cta-band{
  background:linear-gradient(120deg,var(--brand-900) 0%,#154166 55%,#12857D 140%);
  border-radius:var(--r-block);
  padding:48px;
  color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:600;line-height:1.4;color:#fff;}
.cta-band p{margin-top:12px;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.78);max-width:620px;}
.cta-band .btn-primary{background:#fff;color:var(--brand-900);}
.cta-band .btn-primary:hover{background:var(--brand-100);color:var(--brand-900);}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}

/* ===== 相关链接 ===== */
.link-cards{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.link-card{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:26px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  color:var(--ink);
}
.link-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#CBDCE8;color:var(--ink);}
.link-card h3{font-size:18px;font-weight:600;color:var(--brand-900);}
.link-card p{margin-top:8px;font-size:14.5px;color:var(--ink-2);line-height:1.7;}
.link-card i{
  flex:0 0 42px;width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-100);color:var(--brand-700);font-size:15px;
}

/* ===== 页脚 ===== */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:600;margin-bottom:16px;}
.footer-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;font-size:15px;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:340px;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-links,.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(255,255,255,.72);}
.footer-contact i{color:#8FD7D1;margin-top:4px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom nav{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom a{font-size:13px;color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:#fff;text-decoration:underline;}

/* ===== 返回顶部 ===== */
.to-top{
  position:fixed;right:24px;bottom:24px;
  width:44px;height:44px;border-radius:50%;
  background:var(--brand-700);color:#fff;border:0;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease,background-color .2s ease;
  z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-500);}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .nav-links{gap:20px;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:64px;}
  .split-cards{grid-template-columns:1fr 1fr;}
  .split-cards > :last-child{grid-column:1 / -1;}
  .stats-grid{grid-template-columns:1fr 1fr;row-gap:32px;}
  .stats-grid > div{padding:0 20px;}
  .stats-grid > div:nth-child(odd){border-left:0;padding-left:0;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .link-cards{grid-template-columns:1fr;}
  .cta-band{padding:40px 32px;}
  .compare-block{padding:48px 0;}
}
@media (max-width:639px){
  .section{padding:48px 0;}
  .site-footer{margin-top:64px;padding-top:48px;}
  .header-actions .btn{display:none;}
  .split-cards{grid-template-columns:1fr;}
  .split-cards > :last-child{grid-column:auto;}
  .form-grid{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:1fr 1fr;}
  .stats-num{font-size:30px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 22px;}
  .cta-band .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .page-hero{padding:44px 0 52px;}
  .form-card,.info-card{padding:22px;}
  .link-card{flex-direction:column;align-items:flex-start;}
  .to-top{right:16px;bottom:16px;}
}