/* roulang page: index */
:root{
  --brand-900:#0A2E45; --brand-700:#0F4C6B; --brand-500:#16658C; --brand-100:#E6F0F5;
  --accent:#E8621F; --accent-soft:#FDEDE3;
  --ink:#10212E; --ink-2:#4A5C6B; --line:#E2E9EF; --bg:#F4F7F9; --surface:#FFFFFF; --ok:#1F9D6B;
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,33,46,.05);
  --sh-2:0 6px 18px rgba(16,33,46,.06);
  --sh-3:0 14px 36px rgba(16,33,46,.10);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"DIN Alternate","Inter","SF Mono",ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0; padding:0; font-family:var(--font-sans); font-size:16px; line-height:1.75;
  color:var(--ink); background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block; border:0;}
a{color:var(--brand-700); text-decoration:none; transition:color .22s ease-out, background-color .22s ease-out;}
a:hover{color:var(--accent);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:none; box-shadow:0 0 0 3px rgba(232,98,31,.28); border-radius:var(--r-sm);
}
h1,h2,h3,h4{margin:0; color:var(--ink); font-weight:700;}
h1{font-size:40px; line-height:1.28; letter-spacing:-.5px;}
h2{font-size:28px; line-height:1.35; letter-spacing:-.2px;}
h3{font-size:20px; line-height:1.45;}
h4{font-size:17px; line-height:1.5;}
p{margin:0 0 16px;}
ul{margin:0; padding:0; list-style:none;}
button{font-family:inherit; cursor:pointer;}
input,select,textarea{font-family:inherit; font-size:15px;}
::selection{background:var(--accent-soft); color:var(--brand-900);}

.grid-container{max-width:1200px; margin:0 auto; padding-left:24px; padding-right:24px;}
@media (min-width:1440px){.grid-container{max-width:1200px;}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:0 26px; height:48px; border-radius:var(--r-pill); border:1px solid transparent;
  font-size:15px; font-weight:600; line-height:1; letter-spacing:.2px;
  transition:background-color .22s ease-out, color .22s ease-out, box-shadow .22s ease-out, transform .22s ease-out;
}
.btn-primary{background:var(--brand-700); color:#fff; box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-900); color:#fff; box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-accent{background:var(--accent); color:#fff;}
.btn-accent:hover{background:#cf5317; color:#fff; box-shadow:var(--sh-2);}
.btn-accent:active{transform:translateY(1px);}
.btn-outline{background:transparent; color:var(--brand-700); border-color:var(--brand-500);}
.btn-outline:hover{background:var(--brand-700); color:#fff; border-color:var(--brand-700);}
.btn-ghost{background:transparent; color:var(--brand-700); border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-100); color:var(--brand-900);}
.btn-sm{height:42px; padding:0 20px; font-size:14px;}
.btn-block{width:100%;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex; align-items:center; gap:6px; height:26px; padding:0 11px;
  border-radius:var(--r-pill); font-size:12px; font-weight:600; letter-spacing:.5px;
  background:var(--brand-100); color:var(--brand-700);
}
.badge-accent{background:var(--accent-soft); color:var(--accent);}
.badge-ok{background:rgba(31,157,107,.12); color:var(--ok);}
.badge-mute{background:#EEF2F5; color:var(--ink-2);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky; top:0; z-index:60; background:var(--surface);
  border-bottom:1px solid var(--line); transition:box-shadow .24s ease-out;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.header-main{
  display:flex; align-items:center; gap:28px; height:72px;
}
.brand{display:flex; align-items:center; gap:12px; flex:0 0 auto;}
.brand-mark{
  width:36px; height:36px; border-radius:10px; background:var(--brand-900); color:#fff;
  display:flex; align-items:center; justify-content:center; font-size:17px; font-weight:700;
  letter-spacing:0; position:relative; overflow:hidden;
}
.brand-mark::after{
  content:""; position:absolute; right:-6px; bottom:-6px; width:18px; height:18px;
  border-radius:50%; background:var(--accent); opacity:.85;
}
.brand-text{display:flex; flex-direction:column; line-height:1.15;}
.brand-text strong{font-size:16px; font-weight:700; color:var(--brand-900); letter-spacing:.2px;}
.brand-text em{font-style:normal; font-size:12px; color:var(--ink-2); letter-spacing:2px;}
.header-search{
  flex:1 1 auto; max-width:540px; height:46px; display:flex; align-items:center;
  border:1px solid var(--line); border-radius:var(--r-pill); background:#FBFDFE;
  padding:0 6px 0 16px; transition:border-color .22s ease-out, box-shadow .22s ease-out;
}
.header-search:focus-within{border-color:var(--brand-500); box-shadow:0 0 0 3px rgba(232,98,31,.22);}
.header-search i{color:var(--ink-2); font-size:14px; margin-right:10px;}
.header-search input{
  flex:1 1 auto; border:0; background:transparent; height:44px; outline:none; color:var(--ink);
  font-size:14px;
}
.header-search input::placeholder{color:#9BABB8;}
.search-btn{
  border:0; height:36px; padding:0 20px; border-radius:var(--r-pill);
  background:var(--brand-700); color:#fff; font-size:14px; font-weight:600;
  transition:background-color .22s ease-out;
}
.search-btn:hover{background:var(--brand-900);}
.header-actions{display:flex; align-items:center; gap:10px; flex:0 0 auto;}
.mobile-search-toggle{display:none;}

.cat-bar{background:var(--brand-100); border-top:1px solid var(--line);}
.cat-list{display:flex; align-items:center; gap:4px; height:44px; overflow-x:auto; scrollbar-width:none;}
.cat-list::-webkit-scrollbar{display:none;}
.cat-list li{flex:0 0 auto;}
.cat-list a{
  display:inline-block; padding:0 14px; height:44px; line-height:44px; font-size:14px;
  color:var(--brand-700); font-weight:500; border-bottom:2px solid transparent; white-space:nowrap;
  transition:color .2s ease-out, border-color .2s ease-out;
}
.cat-list a:hover{color:var(--accent); border-bottom-color:rgba(232,98,31,.45);}
.cat-list a.active{color:var(--accent); font-weight:600; border-bottom-color:var(--accent);}
.mobile-search-panel{display:none; padding:12px 0 16px; border-top:1px solid var(--line); background:var(--surface);}
.mobile-search-panel.is-open{display:block;}
.mobile-search-panel .header-search{max-width:none;}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--surface);}
.section-num{
  display:inline-flex; align-items:center; gap:10px; font-family:var(--font-num);
  font-size:13px; letter-spacing:1px; color:var(--brand-500); font-weight:600;
}
.section-num::after{content:""; width:1px; height:14px; background:var(--line);}
.section-head{margin-bottom:36px; max-width:760px;}
.section-head h2{margin:10px 0 12px;}
.section-head p{color:var(--ink-2); font-size:15px; margin:0;}
.section-head-row{
  display:flex; align-items:flex-end; justify-content:space-between; gap:24px;
  margin-bottom:36px; flex-wrap:wrap;
}
.link-more{
  font-size:14px; font-weight:600; color:var(--brand-700); border-bottom:1px solid transparent;
  transition:color .2s ease-out, border-color .2s ease-out;
}
.link-more:hover{color:var(--accent); border-bottom-color:var(--accent);}

/* ============ Hero ============ */
.hero{
  position:relative; padding:76px 0 80px; overflow:hidden;
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(15,76,107,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,76,107,.05) 1px, transparent 1px);
  background-size:44px 44px;
}
.hero-inner{display:grid; grid-template-columns:8fr 4fr; gap:48px; align-items:center;}
.hero-copy h1{margin:16px 0 18px; max-width:640px;}
.hero-sub{font-size:17px; color:var(--ink-2); max-width:560px; margin-bottom:28px; line-height:1.8;}
.hero-cta{display:flex; gap:14px; flex-wrap:wrap; margin-bottom:26px;}
.hero-cta-note{font-size:13px; color:var(--ink-2); margin:-14px 0 26px;}
.hero-trust{display:flex; gap:22px; flex-wrap:wrap; padding-top:22px; 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(--ok); font-size:14px;}
.hero-media{position:relative; border-radius:var(--r-lg); overflow:hidden; box-shadow:var(--sh-3); aspect-ratio:3/2;}
.hero-media img{width:100%; height:100%; object-fit:cover;}
.hero-media::after{
  content:""; position:absolute; inset:0; background:var(--brand-900); opacity:.12;
}
.hero-media-tag{
  position:absolute; left:16px; bottom:16px; z-index:2; background:rgba(255,255,255,.94);
  border-radius:var(--r-sm); padding:10px 14px; font-size:13px; color:var(--brand-900);
  box-shadow:var(--sh-1); letter-spacing:.2px;
}

/* ============ 指标看板 ============ */
.metrics{padding:0 0 88px;}
.metric-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-bottom:20px;}
.metric-card{
  position:relative; background:var(--surface); border:1px solid var(--line);
  border-radius:var(--r-md); padding:24px 22px 20px 25px; box-shadow:var(--sh-2);
  transition:box-shadow .24s ease-out, transform .24s ease-out;
}
.metric-card::before{
  content:""; position:absolute; left:0; top:18px; bottom:18px; width:3px;
  background:var(--brand-500); border-radius:0 3px 3px 0;
}
.metric-card:hover{box-shadow:var(--sh-3); transform:translateY(-2px);}
.metric-value{
  font-family:var(--font-num); font-variant-numeric:tabular-nums;
  font-size:46px; font-weight:700; line-height:1.1; color:var(--brand-900); letter-spacing:-1px;
}
.metric-value span{font-size:14px; font-weight:500; color:var(--ink-2); margin-left:6px; letter-spacing:0;}
.metric-label{font-size:14px; color:var(--ink-2); margin-top:6px;}
.metric-divider{height:1px; background:var(--line); margin:16px 0 12px;}
.metric-bar{
  display:flex; align-items:center; justify-content:space-between; gap:20px;
  background:var(--brand-900); color:#fff; border-radius:var(--r-md); padding:22px 28px;
  flex-wrap:wrap;
}
.metric-bar p{margin:0; font-size:15px; color:rgba(255,255,255,.85);}
.metric-bar strong{color:#fff; font-weight:700;}
.metric-bar .btn{color:#fff; border-color:rgba(255,255,255,.42);}
.metric-bar .btn:hover{background:#fff; color:var(--brand-900); border-color:#fff;}

/* ============ 服务矩阵 ============ */
.services-wrap{display:grid; grid-template-columns:5fr 7fr; gap:28px; align-items:start;}
.service-lead{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r-lg);
  overflow:hidden; box-shadow:var(--sh-2);
  transition:box-shadow .24s ease-out, transform .24s ease-out;
}
.service-lead:hover{box-shadow:var(--sh-3); transform:translateY(-2px);}
.service-lead img{width:100%; aspect-ratio:16/10; object-fit:cover;}
.service-lead-body{padding:24px 26px 28px;}
.service-lead-body h3{margin-bottom:10px;}
.service-lead-body p{font-size:15px; color:var(--ink-2); margin-bottom:16px;}
.point-list li{
  position:relative; padding-left:20px; font-size:14px; color:var(--ink-2); margin-bottom:8px;
}
.point-list li::before{
  content:""; position:absolute; left:0; top:9px; width:7px; height:7px; border-radius:50%;
  background:var(--accent);
}
.service-rows{display:grid; grid-template-columns:1fr 1fr; gap:8px 28px;}
.service-row{
  display:flex; gap:16px; padding:20px 4px; border-bottom:1px solid var(--line);
  transition:transform .2s ease-out;
}
.service-row:hover{transform:translateX(2px);}
.service-row:hover .service-idx{color:var(--accent);}
.service-idx{
  font-family:var(--font-num); font-size:14px; font-weight:600; color:var(--brand-500);
  padding-top:2px; transition:color .2s ease-out; flex:0 0 auto;
}
.service-row h4{margin-bottom:6px; font-size:16px;}
.service-row p{margin:0; font-size:14px; color:var(--ink-2); line-height:1.7;}

/* ============ 结果对照 ============ */
.compare{position:relative; display:grid; grid-template-columns:1fr 1fr; gap:0;}
.compare::before{content:""; position:absolute; left:50%; top:0; bottom:0; width:1px; background:var(--line);}
.compare-badge{
  position:absolute; left:50%; top:-16px; transform:translateX(-50%); z-index:2;
  height:32px; padding:0 18px; border-radius:var(--r-pill); background:var(--surface);
  border:1px solid var(--accent); color:var(--brand-700); font-size:13px; font-weight:600;
  display:inline-flex; align-items:center;
}
.compare-col{padding:32px 32px 28px;}
.compare-col:first-child{padding-right:44px;}
.compare-col:last-child{padding-left:44px;}
.compare-col h3{margin-bottom:6px;}
.compare-col .compare-sub{font-size:14px; color:var(--ink-2); margin-bottom:18px;}
.compare-list li{display:flex; gap:12px; align-items:flex-start; font-size:15px; color:var(--ink-2); padding:11px 0; border-bottom:1px dashed var(--line);}
.compare-list li:last-child{border-bottom:0;}
.compare-list i{font-size:13px; margin-top:5px; flex:0 0 auto;}
.compare-list .ic-yes{color:var(--ok);}
.compare-list .ic-no{color:#9BABB8;}

/* ============ 内容列表 ============ */
.news-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:26px;}
.news-card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r-md);
  overflow:hidden; box-shadow:var(--sh-1); display:flex; flex-direction:column;
  transition:box-shadow .24s ease-out, transform .24s ease-out;
}
.news-card:hover{box-shadow:var(--sh-3); transform:translateY(-2px);}
.news-thumb{display:block; overflow:hidden; background:#E9EEF2; aspect-ratio:16/10;}
.news-thumb img{width:100%; height:100%; object-fit:cover; transition:transform .24s ease-out;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:20px 22px 22px; display:flex; flex-direction:column; flex:1 1 auto;}
.news-body h3{font-size:17px; line-height:1.55; margin:12px 0 10px; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;}
.news-body h3 a{color:var(--ink);}
.news-body h3 a:hover{color:var(--accent);}
.news-summary{
  font-size:14px; color:var(--ink-2); line-height:1.7; margin:0 0 16px;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.news-meta{
  margin-top:auto; display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding-top:14px; border-top:1px solid var(--line); font-size:14px; color:var(--ink-2);
}
.news-meta time{font-family:var(--font-num); font-variant-numeric:tabular-nums;}
.empty-state{
  text-align:center; padding:64px 24px; background:var(--surface); border:1px dashed var(--line);
  border-radius:var(--r-lg);
}
.empty-state i{font-size:30px; color:var(--brand-500); margin-bottom:16px; display:block;}
.empty-state p{color:var(--ink-2); margin-bottom:20px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.accordion{border:0; background:transparent; margin:0;}
.accordion-item{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r-md);
  margin-bottom:12px; box-shadow:var(--sh-1); overflow:hidden;
}
.accordion-title{
  border:0; padding:0 56px 0 24px; height:56px; line-height:56px;
  font-size:16px; font-weight:600; color:var(--ink); position:relative;
  transition:background-color .22s ease-out;
}
.accordion-title:hover{background:rgba(230,240,245,.55); color:var(--brand-900);}
.accordion .accordion-title::before,
.accordion .accordion-item.is-active .accordion-title::before{
  content:'+'; font-family:var(--font-num); float:none; position:absolute; right:24px; top:0;
  line-height:56px; font-size:22px; color:var(--accent); margin:0;
  transition:transform .22s ease-out;
}
.accordion-item.is-active .accordion-title::before{transform:rotate(45deg);}
.accordion-content{border:0; padding:0 24px 24px; color:var(--ink-2); font-size:15px; background:transparent;}
.accordion-content p:last-child{margin-bottom:0;}

/* ============ 表单 CTA ============ */
.cta-section{background:var(--brand-900); color:#fff;}
.cta-section h2, .cta-section h3{color:#fff;}
.cta-wrap{display:grid; grid-template-columns:7fr 5fr; gap:56px; align-items:start;}
.form-card{
  background:var(--surface); border-radius:var(--r-lg); padding:34px 34px 30px; box-shadow:var(--sh-3);
}
.form-grid{display:grid; grid-template-columns:1fr 1fr; gap:18px;}
.form-field{display:flex; flex-direction:column; gap:8px;}
.form-field.full{grid-column:1 / -1;}
.form-field label{font-size:14px; font-weight:600; color:var(--ink);}
.form-field label .req{color:var(--accent); margin-left:3px;}
.form-field input, .form-field select, .form-field textarea{
  height:48px; border:1px solid var(--line); border-radius:10px; padding:0 14px;
  background:#FBFDFE; color:var(--ink); outline:none; width:100%;
  transition:border-color .2s ease-out, box-shadow .2s ease-out, background-color .2s ease-out;
}
.form-field textarea{height:104px; padding:12px 14px; resize:vertical; line-height:1.7;}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus{
  border-color:var(--brand-500); background:#fff; box-shadow:0 0 0 3px rgba(232,98,31,.22);
}
.form-field select{
  appearance:none; -webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%234A5C6B' stroke-width='1.6'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 16px center; padding-right:40px;
}
.form-hint{font-size:13px; color:var(--ink-2);}
.form-error{font-size:13px; color:#C0392B; display:none;}
.form-error.is-visible{display:block;}
.form-field.has-error input, .form-field.has-error select{border-color:#C0392B;}
.form-success{
  display:none; margin-top:18px; padding:14px 18px; border-radius:var(--r-sm);
  background:rgba(31,157,107,.12); color:#136E4A; font-size:14px; border:1px solid rgba(31,157,107,.3);
}
.form-success.is-visible{display:block;}
.cta-aside p{color:rgba(255,255,255,.8); font-size:15px; line-height:1.8;}
.trust-cards{display:grid; gap:14px; margin-top:26px;}
.trust-card{
  display:flex; gap:14px; align-items:flex-start; padding:18px 20px;
  border:1px solid rgba(255,255,255,.18); border-radius:var(--r-md);
  background:rgba(255,255,255,.04);
  transition:background-color .22s ease-out;
}
.trust-card:hover{background:rgba(255,255,255,.08);}
.trust-card i{color:var(--accent); font-size:16px; margin-top:3px;}
.trust-card h4{color:#fff; font-size:15px; margin-bottom:4px;}
.trust-card p{margin:0; font-size:13.5px; color:rgba(255,255,255,.72); line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900); color:rgba(255,255,255,.85); padding:64px 0 0;}
.footer-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:44px; padding-bottom:48px;}
.footer-brand{display:flex; align-items:center; gap:12px; margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-brand strong{color:#fff; font-size:16px;}
.footer-brand em{font-style:normal; font-size:12px; color:rgba(255,255,255,.6); letter-spacing:2px; display:block;}
.site-footer h4{color:#fff; font-size:15px; margin-bottom:18px; letter-spacing:.3px;}
.footer-desc{font-size:14px; line-height:1.8; color:rgba(255,255,255,.7); max-width:320px;}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:rgba(255,255,255,.78); font-size:14px; transition:color .2s ease-out;}
.footer-links a:hover{color:var(--accent);}
.footer-contact li{display:flex; gap:10px; font-size:14px; color:rgba(255,255,255,.78); margin-bottom:12px; align-items:flex-start;}
.footer-contact i{color:var(--accent); margin-top:4px; font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14); padding:20px 0 26px; display:flex;
  justify-content:space-between; gap:16px; flex-wrap:wrap; font-size:13px; color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:var(--accent);}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed; right:24px; bottom:28px; width:46px; height:46px; border-radius:50%;
  background:var(--brand-700); color:#fff; border:0; display:none; align-items:center; justify-content:center;
  box-shadow:var(--sh-2); z-index:80; transition:background-color .22s ease-out, transform .22s ease-out;
}
.to-top.is-visible{display:flex;}
.to-top:hover{background:var(--accent); transform:translateY(-2px);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  h1{font-size:34px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .services-wrap{grid-template-columns:1fr; gap:24px;}
  .compare-col:first-child{padding-right:32px;}
  .compare-col:last-child{padding-left:32px;}
}
@media (max-width:1023px){
  .hero-inner{grid-template-columns:1fr; gap:34px;}
  .hero-media{max-width:620px;}
  .footer-grid{grid-template-columns:1fr 1fr; gap:36px;}
  .cta-wrap{grid-template-columns:1fr; gap:40px;}
  .header-search{max-width:320px;}
  .header-actions .btn{display:none;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .metrics{padding-bottom:56px;}
  h1{font-size:29px; letter-spacing:-.3px;}
  h2{font-size:23px;}
  .header-main{height:60px; gap:14px;}
  .header-search{display:none;}
  .mobile-search-toggle{
    display:inline-flex; align-items:center; justify-content:center; width:42px; height:42px;
    border-radius:var(--r-pill); border:1px solid var(--line); background:#FBFDFE; color:var(--brand-700);
  }
  .cat-bar .grid-container{padding-left:0; padding-right:0;}
  .cat-list{padding-left:16px; padding-right:16px;}
  .cat-list{position:relative;}
  .service-rows{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .metric-grid{grid-template-columns:1fr 1fr; gap:14px;}
  .metric-value{font-size:36px;}
  .metrics .metric-bar{padding:20px 22px;}
  .compare{grid-template-columns:1fr;}
  .compare::before{left:0; right:0; top:auto; bottom:auto; height:1px; width:auto;}
  .compare-col{padding:28px 4px;}
  .compare-col:first-child{padding-right:4px; border-bottom:1px solid var(--line);}
  .compare-col:last-child{padding-left:4px;}
  .compare-badge{position:static; transform:none; margin-bottom:18px; display:inline-flex;}
  .form-card{padding:24px 20px;}
  .form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr; gap:32px; padding-bottom:36px;}
  .footer-desc{max-width:none;}
  .btn{width:100%;}
  .hero-cta{flex-direction:column; align-items:stretch;}
  .hero-trust{gap:14px;}
  .section-head-row{align-items:flex-start;}
}
@media (max-width:519px){
  .grid-container{padding-left:18px; padding-right:18px;}
  .brand-text strong{font-size:14px;}
  .metric-value{font-size:32px;}
  .metric-card{padding:20px 18px 16px 21px;}
}

/* roulang page: article */
:root{
  --brand-900:#0A2E45;
  --brand-700:#0F4C6B;
  --brand-500:#16658C;
  --brand-100:#E6F0F5;
  --accent:#E8621F;
  --accent-soft:#FDEDE3;
  --ink:#10212E;
  --ink-2:#4A5C6B;
  --line:#E2E9EF;
  --bg:#F4F7F9;
  --surface:#FFFFFF;
  --ok:#1F9D6B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,33,46,.05);
  --sh-2:0 6px 18px rgba(16,33,46,.06);
  --sh-3:0 14px 36px rgba(16,33,46,.10);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"DIN Alternate","Inter","SF Mono",ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,h5,h6{font-family:var(--font-sans);font-weight:700;line-height:1.35;color:var(--ink);margin:0}
p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--brand-700);text-decoration:none;transition:color .22s ease-out,background-color .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out}
a:hover{color:var(--accent)}
img{max-width:100%;display:block;background:#DDE5EB}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--ink);outline:none}
:focus-visible{outline:3px solid rgba(232,98,31,.28);outline-offset:2px}
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== 顶部导航 ===== */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .24s ease-out}
.site-header.is-stuck{box-shadow:var(--sh-2)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--brand-900);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;letter-spacing:0}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.3px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:12px;letter-spacing:.5px;color:var(--ink-2)}
.nav-search{flex:1 1 auto;max-width:560px;display:flex;align-items:center;gap:10px;height:48px;padding:4px 4px 4px 18px;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-pill);transition:border-color .22s ease-out,box-shadow .22s ease-out}
.nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(232,98,31,.28)}
.nav-search i{color:var(--ink-2);font-size:15px}
.nav-search input{flex:1 1 auto;min-width:0;height:38px;border:0;background:transparent;font-size:15px}
.nav-search input::placeholder{color:#8A9BA8}
.btn-search{flex:0 0 auto;height:38px;padding:0 22px;border-radius:var(--r-pill);background:var(--brand-700);color:#fff;font-size:15px;font-weight:600;transition:background-color .22s ease-out,box-shadow .22s ease-out}
.btn-search:hover{background:var(--brand-900);box-shadow:var(--sh-2)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-pill);font-size:15px;font-weight:600;transition:background-color .22s ease-out,color .22s ease-out,box-shadow .22s ease-out,transform .18s ease-out}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:#CF5314;color:#fff;box-shadow:var(--sh-2);text-decoration:none}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{border:1px solid var(--brand-700);color:var(--brand-700);background:#fff}
.btn-outline:hover{background:var(--brand-700);color:#fff;text-decoration:none}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.icon-btn{display:none;width:42px;height:42px;border-radius:50%;background:var(--brand-100);color:var(--brand-700);align-items:center;justify-content:center;font-size:16px}
.icon-btn:hover{background:var(--brand-700);color:#fff}

/* ===== 分类条 ===== */
.cat-bar{background:var(--brand-100);border-bottom:1px solid var(--line)}
.cat-list{display:flex;align-items:center;gap:8px;height:44px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.cat-list::-webkit-scrollbar{display:none}
.cat-list li{flex:0 0 auto}
.cat-list a{position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;font-size:14px;font-weight:500;color:var(--ink-2);white-space:nowrap}
.cat-list a:hover{color:var(--brand-700);text-decoration:none}
.cat-list a.active{color:var(--brand-900);font-weight:600}
.cat-list a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;background:var(--accent)}

/* ===== 面包屑与文章头部 ===== */
.page-head{background:#fff;border-bottom:1px solid var(--line);padding:26px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);margin-bottom:18px}
.breadcrumb a{color:var(--brand-700)}
.breadcrumb .sep{color:#B7C4CE}
.breadcrumb .current{color:var(--ink-2)}
.article-head{padding-bottom:26px}
.cat-badge{display:inline-block;margin-bottom:14px;padding:5px 12px;border-radius:var(--r-pill);background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.5px}
.article-head h1{max-width:900px;margin-bottom:16px;font-size:38px;line-height:1.28;letter-spacing:-.5px;font-weight:700}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:14px;color:var(--ink-2);font-variant-numeric:tabular-nums}
.article-meta i{color:var(--brand-500);margin-right:5px}
.article-meta b{color:var(--brand-700);font-weight:600}
.dot{width:4px;height:4px;border-radius:50%;background:var(--line)}

/* ===== 正文布局 ===== */
.article-wrap{padding:48px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start}
.article-body{max-width:760px;font-size:18px;line-height:1.9;color:var(--ink)}
.article-body h2{position:relative;margin:40px 0 18px;padding-left:14px;font-size:24px;line-height:1.45}
.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--brand-700)}
.article-body h3{margin:28px 0 12px;font-size:20px;line-height:1.5}
.article-body h4{margin:22px 0 10px;font-size:17px}
.article-body p{margin:0 0 20px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px}
.article-body ul li,.article-body ol li{position:relative;margin-bottom:10px;padding-left:4px}
.article-body ul li::before{content:"";position:absolute;left:-14px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--accent)}
.article-body ol{list-style:decimal}
.article-body ol li::marker{color:var(--brand-700);font-weight:600}
.article-body img{margin:24px auto;border-radius:var(--r-md);box-shadow:var(--sh-2)}
.article-body figure{margin:24px 0}
.article-body figcaption{margin-top:10px;font-size:13px;line-height:1.7;color:var(--ink-2);text-align:center}
.article-body blockquote{margin:24px 0;padding:18px 20px;border-left:3px solid var(--accent);border-radius:var(--r-sm);background:var(--brand-100);color:var(--ink-2);font-size:17px}
.article-body a{color:var(--brand-700);border-bottom:1px solid rgba(15,76,107,.3)}
.article-body a:hover{color:var(--accent);border-bottom-color:var(--accent);text-decoration:none}
.article-body strong{font-weight:700;color:var(--brand-900)}
.article-body table{width:100%;margin:24px 0;border-collapse:separate;border-spacing:0;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;font-size:15px}
.article-body thead th{background:var(--brand-100);color:var(--brand-900);font-weight:600;text-align:left;padding:13px 16px;border-bottom:1px solid var(--line)}
.article-body tbody td{padding:13px 16px;border-bottom:1px solid var(--line);color:var(--ink-2)}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body tbody tr:hover td{background:rgba(230,240,245,.5)}
.article-body code{padding:2px 6px;border-radius:6px;background:var(--brand-100);color:var(--brand-900);font-family:var(--font-num);font-size:15px}
.empty-state{max-width:760px;padding:64px 24px;border:1px dashed var(--line);border-radius:var(--r-lg);background:#fff;text-align:center}
.empty-state i{display:block;margin-bottom:14px;font-size:34px;color:var(--brand-500)}
.empty-state p{margin-bottom:20px;font-size:17px;color:var(--ink-2)}

/* ===== 侧栏 ===== */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{padding:20px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);box-shadow:var(--sh-1)}
.side-card h3{margin-bottom:14px;padding-left:12px;font-size:16px}
.side-card h3::before{content:"";position:absolute}
.side-card h3{position:relative}
.side-card h3::after{content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;border-radius:2px;background:var(--brand-700)}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{display:block;padding:8px 10px;border-radius:var(--r-sm);font-size:14px;line-height:1.6;color:var(--ink-2)}
.toc-list a:hover{background:var(--brand-100);color:var(--brand-700);text-decoration:none}
.toc-list a.is-current{background:var(--brand-100);color:var(--brand-700);font-weight:600}
.toc-empty{display:block;padding:8px 10px;font-size:14px;color:var(--ink-2)}
.side-links{display:flex;flex-direction:column;gap:8px}
.side-links a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 12px;border-radius:var(--r-sm);background:var(--bg);font-size:14px;color:var(--brand-700)}
.side-links a i{font-size:12px;color:var(--accent);transition:transform .22s ease-out}
.side-links a:hover{background:var(--brand-100);text-decoration:none}
.side-links a:hover i{transform:translateX(2px)}

/* ===== 标签 ===== */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;max-width:760px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}
.tag-label{font-size:14px;color:var(--ink-2)}
.tag{padding:6px 14px;border:1px solid transparent;border-radius:var(--r-pill);background:var(--brand-100);color:var(--brand-700);font-size:13px}
.tag:hover{background:var(--accent-soft);border-color:rgba(232,98,31,.25);color:var(--accent);text-decoration:none}

/* ===== 相关推荐 ===== */
.related{max-width:760px;margin-top:56px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px}
.section-head h2{font-size:24px;letter-spacing:-.3px}
.more-link{font-size:14px;font-weight:600;white-space:nowrap}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.post-card{display:flex;flex-direction:column;overflow:hidden;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);box-shadow:var(--sh-1);transition:transform .24s ease-out,box-shadow .24s ease-out}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);text-decoration:none}
.thumb{aspect-ratio:16/10;overflow:hidden;background:#DDE5EB}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out}
.post-card:hover .thumb img{transform:scale(1.03)}
.post-body{display:flex;flex-direction:column;gap:9px;padding:16px 18px 18px}
.chip{align-self:flex-start;padding:4px 10px;border-radius:var(--r-pill);background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;letter-spacing:.5px}
.post-body h3{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:16px;line-height:1.5}
.post-card:hover h3{color:var(--accent)}
.post-body p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:14px;line-height:1.7;color:var(--ink-2)}
.post-body time{font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums}
.related-empty{padding:22px;border:1px dashed var(--line);border-radius:var(--r-md);background:#fff;font-size:14px;color:var(--ink-2);text-align:center}

/* ===== FAQ ===== */
.faq-section{padding:72px 0 8px}
.faq-head{max-width:720px;margin-bottom:28px}
.faq-head span{display:inline-block;margin-bottom:10px;font-size:12px;font-weight:600;letter-spacing:.5px;color:var(--accent)}
.faq-head h2{margin-bottom:10px;font-size:28px;letter-spacing:-.4px}
.faq-head p{font-size:15px;color:var(--ink-2)}
.accordion{border:0;background:transparent;max-width:960px}
.accordion .accordion-item{margin-bottom:12px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;box-shadow:var(--sh-1);overflow:hidden}
.accordion .accordion-title{position:relative;display:block;padding:0 60px 0 24px;border:0;background:transparent;font-size:17px;font-weight:600;color:var(--ink);line-height:56px;transition:background-color .22s ease-out,color .22s ease-out}
.accordion .accordion-title:hover{background:rgba(230,240,245,.5);color:var(--brand-700)}
.accordion .accordion-title::before{content:"+";position:absolute;right:24px;top:0;float:none;margin:0;padding:0;width:auto;height:auto;line-height:56px;font-size:20px;font-weight:400;color:var(--accent);background:none;transition:transform .22s ease-out}
.accordion .accordion-item.is-active .accordion-title::before{transform:rotate(45deg)}
.accordion .accordion-content{padding:0 24px 22px;border:0;background:transparent;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ===== CTA ===== */
.cta-section{padding:64px 0 80px}
.cta-band{position:relative;overflow:hidden;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:center;padding:44px 40px;border-radius:var(--r-lg);background:var(--brand-900);color:rgba(255,255,255,.85)}
.cta-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:44px 44px;opacity:.9;pointer-events:none}
.cta-band h2{position:relative;margin-bottom:10px;font-size:26px;color:#fff;letter-spacing:-.3px}
.cta-band p{position:relative;max-width:620px;font-size:15px;line-height:1.8}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn-outline{border-color:rgba(255,255,255,.6);color:#fff;background:transparent}
.cta-actions .btn-outline:hover{background:#fff;color:var(--brand-900)}

/* ===== 页脚 ===== */
.site-footer{margin-top:0;padding-top:56px;background:var(--brand-900);color:rgba(255,255,255,.85)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:36px}
.site-footer h4{margin-bottom:16px;font-size:15px;color:#fff;letter-spacing:.5px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.footer-brand strong{display:block;font-size:16px;color:#fff}
.footer-brand em{display:block;font-style:normal;font-size:12px;letter-spacing:.5px;color:rgba(255,255,255,.6)}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.75)}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{font-size:14px;line-height:1.7;color:rgba(255,255,255,.72)}
.footer-contact i{margin-right:8px;color:var(--accent)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(255,255,255,.62)}
.footer-bottom a{color:rgba(255,255,255,.78)}
.footer-bottom a:hover{color:#fff}

/* ===== 返回顶部 ===== */
.to-top{position:fixed;right:24px;bottom:28px;z-index:50;display:flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:50%;background:var(--brand-700);color:#fff;box-shadow:var(--sh-3);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .24s ease-out,transform .24s ease-out,visibility .24s ease-out,background-color .22s ease-out}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--accent);color:#fff}

/* ===== Reveal 搜索弹层 ===== */
.reveal{border:0;border-radius:var(--r-lg)}
.reveal-overlay{background:rgba(10,46,69,.55)}
.reveal-title{margin-bottom:16px;font-size:19px}
.reveal-search{max-width:none}
.close-button{top:16px;right:18px;color:var(--ink-2);font-size:26px;line-height:1}
.close-button:hover{color:var(--accent)}

/* ===== 响应式 ===== */
@media screen and (max-width:1199px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media screen and (max-width:1023px){
  .header-inner{height:64px;gap:14px}
  .nav-search{display:none}
  .icon-btn{display:inline-flex}
  .article-head h1{font-size:30px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .article-side{position:static;order:-1;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .article-body,.related{max-width:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{grid-template-columns:minmax(0,1fr)}
}
@media screen and (max-width:767px){
  .brand-text strong{font-size:15px}
  .btn-sm{padding:0 16px}
  .article-head h1{font-size:28px}
  .article-body{font-size:17px;line-height:1.85}
  .article-body h2{font-size:21px}
  .faq-head h2{font-size:23px}
  .cta-band h2{font-size:22px}
}
@media screen and (max-width:639px){
  .header-inner{height:60px}
  .brand-text em{display:none}
  .header-actions .btn-outline{display:none}
  .icon-btn{display:inline-flex}
  .page-head{padding:20px 0 0}
  .article-head h1{font-size:26px;letter-spacing:-.3px}
  .article-meta{gap:10px;font-size:13px}
  .article-wrap{padding:32px 0 56px}
  .article-side{grid-template-columns:minmax(0,1fr);order:-1}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .faq-section{padding:56px 0 8px}
  .accordion .accordion-title{padding:0 52px 0 18px;font-size:16px}
  .accordion .accordion-content{padding:0 18px 20px}
  .cta-section{padding:52px 0 64px}
  .cta-band{padding:30px 22px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .footer-bottom{justify-content:flex-start}
  .to-top{right:16px;bottom:18px}
}

/* roulang page: category1 */
:root{
  --brand-900:#0A2E45;
  --brand-700:#0F4C6B;
  --brand-500:#16658C;
  --brand-100:#E6F0F5;
  --accent:#E8621F;
  --accent-soft:#FDEDE3;
  --ink:#10212E;
  --ink-2:#4A5C6B;
  --line:#E2E9EF;
  --bg:#F4F7F9;
  --surface:#FFFFFF;
  --ok:#1F9D6B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,33,46,.05);
  --sh-2:0 6px 18px rgba(16,33,46,.06);
  --sh-3:0 14px 36px rgba(16,33,46,.10);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"DIN Alternate","Inter","SF Mono",ui-monospace,monospace;
  --maxw:1200px;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(16,33,46,.045) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(16,33,46,.045) 1px,transparent 1px);
  background-size:64px 64px;
}

h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.3px;}
h1{font-size:40px;line-height:1.28;letter-spacing:-.5px;}
h2{font-size:28px;line-height:1.35;}
h3{font-size:20px;line-height:1.45;}
h4{font-size:17px;line-height:1.5;}
p{margin:0 0 16px;color:var(--ink-2);}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;background:var(--brand-100);}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease-out,border-color .2s ease-out;}
a:hover,a:focus{color:var(--accent);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
b,strong{font-weight:700;}

.grid-container{max-width:var(--maxw);margin:0 auto;padding-left:20px;padding-right:20px;position:relative;z-index:1;}
@media (min-width:1440px){.grid-container{max-width:var(--maxw);}}

.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:2px solid transparent;
  cursor:pointer;
  transition:background-color .22s ease-out,color .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out,transform .22s ease-out;
}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:3px 3px 0 rgba(10,46,69,.16);}
.btn-primary:hover,.btn-primary:focus{background:#cf5214;border-color:#cf5214;color:#fff;box-shadow:3px 3px 0 rgba(10,46,69,.28);}
.btn-outline{background:transparent;border-color:var(--brand-700);color:var(--brand-700);}
.btn-outline:hover,.btn-outline:focus{background:var(--brand-700);border-color:var(--brand-700);color:#fff;box-shadow:3px 3px 0 rgba(10,46,69,.18);}
.btn-light{background:#fff;border-color:rgba(255,255,255,.35);color:var(--brand-900);}
.btn-light:hover,.btn-light:focus{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn:active{transform:translateY(1px);}
.btn-block{width:100%;}
.btn:focus-visible,a:focus-visible,input:focus-visible,button:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(232,98,31,.35);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease-out;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.header-main{display:flex;align-items:center;gap:26px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand:hover{color:var(--brand-900);}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-700);
  color:#fff;
  font-size:18px;
  font-weight:700;
  border-radius:10px;
  box-shadow:2px 2px 0 rgba(10,46,69,.18);
}
.brand-text strong{display:block;font-size:16px;color:var(--brand-900);line-height:1.25;letter-spacing:0;}
.brand-text em{display:block;font-style:normal;font-size:12px;color:var(--ink-2);letter-spacing:.5px;line-height:1.3;}

.nav-search{
  flex:1 1 auto;
  max-width:540px;
  height:46px;
  display:flex;
  align-items:center;
  padding-left:18px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  transition:border-color .22s ease-out,box-shadow .22s ease-out,background-color .22s ease-out;
}
.nav-search > i{color:var(--ink-2);font-size:15px;}
.nav-search input{
  flex:1 1 auto;
  height:100%;
  min-width:0;
  border:0;
  background:transparent;
  padding:0 14px;
  font-size:15px;
  color:var(--ink);
  outline:none;
}
.nav-search input::placeholder{color:#93A3B0;}
.nav-search button{
  flex:0 0 auto;
  height:34px;
  margin-right:6px;
  padding:0 20px;
  border:0;
  border-radius:var(--r-pill);
  background:var(--brand-700);
  color:#fff;
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .22s ease-out;
}
.nav-search button:hover{background:var(--accent);}
.nav-search:focus-within{background:#fff;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(232,98,31,.28);}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.search-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  background:#fff;
  border-radius:var(--r-sm);
  color:var(--brand-700);
  cursor:pointer;
  transition:border-color .22s ease-out,color .22s ease-out;
}
.search-toggle:hover{border-color:var(--brand-500);color:var(--accent);}
.header-actions .btn{padding:10px 18px;font-size:14px;}

.cat-bar{
  background:var(--brand-100);
  border-top:1px solid rgba(16,33,46,.06);
  border-bottom:1px solid var(--line);
}
.cat-list{
  display:flex;
  align-items:center;
  gap:30px;
  height:44px;
  overflow-x:auto;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
  mask-image:linear-gradient(to right,#000 0,#000 calc(100% - 28px),transparent 100%);
}
.cat-list::-webkit-scrollbar{display:none;}
.cat-list li{flex:0 0 auto;}
.cat-list a{
  position:relative;
  display:inline-block;
  font-size:15px;
  color:var(--ink-2);
  white-space:nowrap;
  line-height:44px;
}
.cat-list a:hover{color:var(--brand-700);}
.cat-list a.active{color:var(--brand-900);font-weight:600;}
.cat-list a.active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:7px;
  height:2px;
  background:var(--accent);
}

/* ============ 面包屑 & Hero ============ */
.hero{
  background:#fff;
  border-bottom:1px solid var(--line);
  padding:36px 0 64px;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);margin-bottom:28px;}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb span{color:#9AAAB7;}
.breadcrumb .crumb-current{color:var(--ink-2);}

.hero-grid{align-items:center;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-num);
  font-size:13px;
  letter-spacing:1px;
  color:var(--accent);
  background:var(--accent-soft);
  border-radius:var(--r-pill);
  padding:5px 14px;
  margin-bottom:18px;
}
.hero h1{margin-bottom:16px;max-width:15em;}
.hero-sub{font-size:17px;color:var(--ink);line-height:1.7;margin-bottom:12px;}
.hero-text{font-size:15px;color:var(--ink-2);max-width:34em;margin-bottom:24px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-meta{
  font-size:14px;
  color:var(--ink-2);
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  margin-bottom:18px;
}
.hero-meta b{color:var(--brand-700);font-size:18px;}
.badge-row{display:flex;flex-wrap:wrap;gap:20px;}
.badge-row li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);}
.badge-row i{color:var(--brand-500);}

.hero-media{margin-top:28px;}
.hero-media img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  box-shadow:var(--sh-3);
}

/* ============ 板块通用 ============ */
.section{padding:88px 0;position:relative;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:44em;margin-bottom:40px;}
.section-num{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-num);
  font-size:13px;
  letter-spacing:1.5px;
  color:var(--accent);
  margin-bottom:14px;
}
.section-num::after{content:"";width:34px;height:1px;background:currentColor;opacity:.5;}
.section-head h2{position:relative;padding-left:14px;margin-bottom:14px;}
.section-head h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;background:var(--brand-500);border-radius:2px;}
.section-head p{font-size:15px;}

/* ============ 目录索引 ============ */
.catalog-layout{align-items:flex-start;}
.cat-group{margin-bottom:34px;}
.cat-group:last-child{margin-bottom:0;}
.group-title{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:19px;
  padding-bottom:12px;
  border-bottom:2px solid var(--brand-900);
}
.group-title .group-num{
  font-family:var(--font-num);
  font-size:13px;
  color:var(--accent);
  border:1px solid var(--accent);
  border-radius:var(--r-sm);
  padding:2px 8px;
  letter-spacing:1px;
}
.group-title .group-count{margin-left:auto;font-size:13px;font-weight:400;color:var(--ink-2);}

.entry-list li{border-bottom:1px dashed var(--line);}
.entry-list li:last-child{border-bottom:0;}
.entry-row{
  display:flex;
  align-items:center;
  gap:16px;
  padding:15px 12px;
  color:var(--ink);
  transition:background-color .22s ease-out,transform .22s ease-out,color .22s ease-out;
}
.entry-row:hover,.entry-row:focus{
  background:rgba(230,240,245,.7);
  color:var(--brand-900);
  transform:translateX(2px);
}
.entry-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:14px;
  color:var(--ink-2);
  flex:0 0 28px;
}
.entry-title{flex:1 1 auto;font-size:15.5px;}
.entry-row i{color:#9AAAB7;font-size:13px;transition:color .22s ease-out,transform .22s ease-out;}
.entry-row:hover i{color:var(--accent);transform:translateX(2px);}

.filter-card{
  position:sticky;
  top:132px;
  background:#fff;
  border:1px solid var(--line);
  border-left:3px solid var(--brand-500);
  border-radius:var(--r-md);
  padding:24px;
  box-shadow:var(--sh-2);
}
.filter-card h3{font-size:17px;margin-bottom:6px;}
.filter-hint{font-size:13px;color:var(--ink-2);margin-bottom:20px;}
.filter-group{padding-bottom:16px;margin-bottom:16px;border-bottom:1px dashed var(--line);}
.filter-group:last-of-type{border-bottom:0;}
.filter-label{font-size:13px;color:var(--ink-2);letter-spacing:.5px;margin-bottom:10px;}
.check{display:flex;align-items:center;gap:10px;padding:7px 0;font-size:14.5px;color:var(--ink);cursor:pointer;}
.check input{
  appearance:none;
  -webkit-appearance:none;
  width:18px;height:18px;flex:0 0 18px;
  border:1.5px solid #C7D4DE;
  border-radius:5px;
  background:#fff;
  position:relative;
  cursor:pointer;
  transition:background-color .2s ease-out,border-color .2s ease-out;
}
.check input:checked{background:var(--brand-700);border-color:var(--brand-700);}
.check input:checked::after{
  content:"";
  position:absolute;
  left:5px;top:1px;
  width:5px;height:9px;
  border:2px solid #fff;
  border-top:0;border-left:0;
  transform:rotate(45deg);
}
.check:hover input{border-color:var(--brand-500);}
.filter-result{
  font-size:13px;
  color:var(--ink-2);
  font-family:var(--font-num);
  padding-top:14px;
  border-top:1px solid var(--line);
  margin-top:6px;
}
.filter-result b{color:var(--brand-700);font-size:16px;}

/* ============ 场景分区 ============ */
.scene-card{
  height:100%;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow .24s ease-out,transform .24s ease-out;
}
.scene-card:hover{box-shadow:var(--sh-3);transform:translateY(-2px);}
.scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.scene-body{padding:20px 22px 24px;border-top:3px solid var(--accent);}
.scene-body h3{font-size:18px;margin-bottom:8px;}
.scene-body p{font-size:14.5px;margin-bottom:14px;}
.tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:.5px;
  padding:3px 10px;
  border-radius:var(--r-pill);
  background:var(--brand-100);
  color:var(--brand-700);
  margin-right:8px;
}
.tag-accent{background:var(--accent-soft);color:#B9480F;}

/* ============ 流程 ============ */
.flow-list{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.flow-item{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px 22px;
  box-shadow:var(--sh-1);
  transition:box-shadow .24s ease-out,transform .24s ease-out;
}
.flow-item:hover{box-shadow:var(--sh-3);transform:translateY(-2px);}
.flow-num{
  font-family:var(--font-num);
  font-size:26px;
  color:var(--brand-500);
  line-height:1;
  margin-bottom:14px;
  display:block;
}
.flow-item h3{font-size:17px;margin-bottom:8px;}
.flow-item p{font-size:14.5px;}
.flow-item::after{
  content:"";
  position:absolute;
  top:34px;right:-22px;
  width:22px;
  height:1px;
  background:var(--line);
}
.flow-item:last-child::after{display:none;}

/* ============ FAQ ============ */
.faq-accordion{
  background:transparent;
  border:0;
  max-width:920px;
}
.faq-accordion .accordion-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow .22s ease-out;
}
.faq-accordion .accordion-item:hover{box-shadow:var(--sh-2);}
.faq-accordion .accordion-title{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 24px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  border:0;
  background:#fff;
  transition:background-color .22s ease-out,color .22s ease-out;
}
.faq-accordion .accordion-title:hover{background:rgba(230,240,245,.55);color:var(--brand-900);}
.faq-plus{
  flex:0 0 auto;
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--brand-700);
  font-size:12px;
}
.faq-plus i{transition:transform .24s ease-out;}
.faq-accordion .accordion-item.is-active .faq-plus{background:var(--accent);border-color:var(--accent);color:#fff;}
.faq-accordion .accordion-item.is-active .faq-plus i{transform:rotate(45deg);}
.faq-accordion .accordion-content{
  border:0 !important;
  padding:0 24px 24px !important;
  background:#fff;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-2);
}
.faq-accordion .accordion-content p{font-size:15px;}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-900);
  border-radius:var(--r-lg);
  padding:52px 48px;
  display:grid;
  grid-template-columns:1.4fr .9fr;
  gap:40px;
  align-items:center;
  box-shadow:var(--sh-3);
}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15.5px;max-width:36em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-note{margin-top:14px;font-size:13px;color:rgba(255,255,255,.6);}

/* ============ 分页 ============ */
.pager{margin-top:44px;display:flex;justify-content:center;}
.pager ul.pagination{margin:0;}
.pagination li a,.pagination li span{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:40px;
  height:40px;
  margin:0 4px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-2);
  font-family:var(--font-num);
  font-size:14px;
  transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.pagination li a:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-500);}
.pagination li.current a,.pagination li.current span{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}
.pagination li.disabled span{color:#B9C6D1;background:#fff;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.85);margin-top:0;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none;}
.footer-brand strong{display:block;color:#fff;font-size:16px;line-height:1.3;}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:rgba(255,255,255,.6);letter-spacing:.5px;}
.footer-desc{font-size:14px;color:rgba(255,255,255,.7);line-height:1.8;max-width:30em;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:rgba(255,255,255,.75);font-size:14.5px;}
.footer-links a:hover{color:var(--accent);text-decoration:underline;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.7);margin-bottom:12px;line-height:1.7;}
.footer-contact i{color:var(--accent);margin-top:5px;}
.footer-bottom{
  margin-top:48px;
  padding:20px 0 24px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13.5px;
  color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.8);}
.footer-bottom a:hover{color:var(--accent);}

/* ============ Reveal 搜索面板 ============ */
.reveal.search-reveal{
  border:0;
  border-radius:var(--r-lg);
  padding:28px 26px;
  box-shadow:var(--sh-3);
  top:120px;
}
.reveal.search-reveal h4{margin-bottom:16px;font-size:17px;}
.search-box-lg{
  display:flex;
  align-items:center;
  gap:10px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  height:48px;
  padding-left:18px;
  background:var(--bg);
}
.search-box-lg input{flex:1 1 auto;border:0;background:transparent;height:100%;outline:none;font-size:15px;min-width:0;}
.search-box-lg:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(232,98,31,.28);background:#fff;}
.reveal .close-button{color:var(--ink-2);top:14px;right:14px;}
.reveal .close-button:hover{color:var(--accent);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .flow-list{grid-template-columns:repeat(2,1fr);}
  .flow-item:nth-child(2)::after{display:none;}
}
@media (max-width:1023px){
  .nav-search{display:none;}
  .search-toggle{display:inline-flex;}
  .header-main{height:66px;gap:16px;}
  .hero{padding:28px 0 52px;}
  .section{padding:64px 0;}
  .filter-card{position:static;margin-top:32px;}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .flow-list{grid-template-columns:1fr;}
  .flow-item::after{display:none;}
  .cat-list{gap:22px;}
}
@media (max-width:639px){
  h1{font-size:29px;}
  .hero h1{font-size:29px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  .section{padding:52px 0;}
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:11px;}
  .header-actions .btn{padding:9px 14px;font-size:13px;}
  .hero-actions .btn{width:100%;}
  .entry-row{padding:14px 8px;gap:12px;}
  .entry-title{font-size:15px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{padding:32px 22px;}
  .cta-actions .btn{width:100%;}
  .pagination li a,.pagination li span{min-width:36px;height:36px;}
}

/* roulang page: category3 */
:root{
  --brand-900:#0A2E45;
  --brand-700:#0F4C6B;
  --brand-500:#16658C;
  --brand-100:#E6F0F5;
  --accent:#E8621F;
  --accent-soft:#FDEDE3;
  --ink:#10212E;
  --ink-2:#4A5C6B;
  --line:#E2E9EF;
  --bg:#F4F7F9;
  --surface:#FFFFFF;
  --ok:#1F9D6B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,33,46,.05);
  --sh-2:0 6px 18px rgba(16,33,46,.06);
  --sh-3:0 14px 36px rgba(16,33,46,.10);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"DIN Alternate","Inter","SF Mono","Menlo",monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  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;background:#DDE5EB;}
a{color:var(--brand-700);text-decoration:none;transition:color .22s ease-out,background-color .22s ease-out,border-color .22s ease-out;}
a:hover{color:var(--accent);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.3px;}
h1{font-size:40px;line-height:1.28;}
h2{font-size:28px;line-height:1.35;}
h3{font-size:20px;line-height:1.45;}
h4{font-size:17px;line-height:1.5;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(232,98,31,.28);outline-offset:2px;border-radius:4px;}

.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 顶部品牌与搜索导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease-out;
}
.site-header.is-stuck{box-shadow:var(--sh-2);}
.topbar{display:flex;align-items:center;gap:22px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;
  background:var(--brand-700);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;letter-spacing:0;
}
.brand-text strong{display:block;font-size:16px;font-weight:700;color:var(--ink);line-height:1.25;letter-spacing:-.2px;}
.brand-text em{display:block;font-style:normal;font-size:12px;color:var(--ink-2);letter-spacing:.6px;line-height:1.4;}

.search-box{flex:1 1 auto;max-width:540px;margin:0 auto;}
.search-form{position:relative;display:flex;align-items:center;}
.search-form .fa-magnifying-glass{
  position:absolute;left:18px;font-size:15px;color:var(--ink-2);pointer-events:none;
}
.search-input{
  width:100%;height:46px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:#fff;
  padding:0 116px 0 44px;
  font-size:15px;color:var(--ink);
  transition:border-color .22s ease-out,box-shadow .22s ease-out;
}
.search-input::placeholder{color:#8A9AA6;font-size:14px;}
.search-input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(232,98,31,.28);}
.search-btn{
  position:absolute;right:4px;top:4px;
  height:38px;padding:0 20px;border:0;border-radius:var(--r-pill);
  background:var(--brand-700);color:#fff;font-size:14px;font-weight:600;
  cursor:pointer;transition:background-color .22s ease-out,box-shadow .22s ease-out;
}
.search-btn:hover{background:var(--brand-900);box-shadow:var(--sh-2);}
.search-btn:active{transform:translateY(1px);}

.top-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  text-decoration:none;white-space:nowrap;
  transition:background-color .22s ease-out,color .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out,transform .22s ease-out;
}
.btn-primary{background:var(--brand-700);color:#fff;}
.btn-primary:hover{background:var(--brand-900);color:#fff;box-shadow:var(--sh-2);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#C94F13;color:#fff;box-shadow:var(--sh-2);}
.btn-outline{background:#fff;border-color:var(--brand-500);color:var(--brand-700);}
.btn-outline:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn:active{transform:translateY(1px);}
.search-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:#fff;color:var(--brand-700);cursor:pointer;align-items:center;justify-content:center;
}

/* ---------- 分类条 ---------- */
.cat-bar{background:var(--brand-100);border-bottom:1px solid var(--line);}
.cat-list{
  display:flex;align-items:center;gap:6px;
  height:44px;overflow-x:auto;scrollbar-width:none;
}
.cat-list::-webkit-scrollbar{display:none;}
.cat-list li{flex:0 0 auto;}
.cat-list a{
  display:inline-flex;align-items:center;height:44px;padding:0 14px;
  font-size:14px;color:var(--ink-2);border-bottom:2px solid transparent;
  transition:color .22s ease-out,border-color .22s ease-out;
}
.cat-list a:hover{color:var(--brand-700);border-bottom-color:var(--brand-500);}
.cat-list a.active{color:var(--brand-900);font-weight:600;border-bottom-color:var(--accent);}

/* ---------- 内页横幅 ---------- */
.page-banner{
  position:relative;
  background-image:linear-gradient(rgba(10,46,69,.88),rgba(10,46,69,.88)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  color:#fff;padding:56px 0 52px;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.78);margin-bottom:20px;}
.crumb a{color:rgba(255,255,255,.88);}
.crumb a:hover{color:#fff;text-decoration:underline;}
.crumb .sep{opacity:.6;}
.crumb .cur{color:rgba(255,255,255,.72);}
.page-banner h1{color:#fff;max-width:820px;}
.banner-sub{
  margin-top:16px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.86);max-width:720px;
}
.banner-meta{
  margin-top:22px;display:flex;flex-wrap:wrap;gap:10px;
}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  font-size:13px;color:#fff;
}
.banner-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}
.btn-light{background:#fff;color:var(--brand-900);}
.btn-light:hover{background:var(--brand-100);color:var(--brand-900);box-shadow:var(--sh-2);}
.btn-line{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-line:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--surface);}
.section-head{margin-bottom:36px;max-width:760px;}
.sec-index{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-num);font-size:13px;letter-spacing:2px;color:var(--ink-2);
  margin-bottom:14px;
}
.sec-index::before{content:"";display:inline-block;width:2px;height:16px;background:var(--accent);border-radius:2px;}
.sec-sub{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink-2);}
.sec-foot{margin-top:32px;}

/* ---------- 指标卡 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.metric-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:24px 22px 22px 26px;
  box-shadow:var(--sh-2);overflow:hidden;
  transition:box-shadow .24s ease-out,transform .24s ease-out;
}
.metric-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand-500);}
.metric-card:hover{box-shadow:var(--sh-3);transform:translateY(-2px);}
.metric-label{font-size:14px;color:var(--ink-2);margin-bottom:12px;}
.metric-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:44px;line-height:1;font-weight:700;color:var(--brand-900);}
.metric-unit{font-family:var(--font-sans);font-size:14px;font-weight:400;color:var(--ink-2);margin-left:6px;}
.metric-divider{height:1px;background:var(--line);margin:18px 0 14px;}
.metric-note{font-size:14px;color:var(--ink-2);display:flex;align-items:center;gap:8px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.5px;font-weight:600;
  background:var(--brand-100);color:var(--brand-700);
}
.badge-accent{background:var(--accent-soft);color:#B8470F;}
.badge-ok{background:rgba(31,157,107,.12);color:var(--ok);}
.badge-grey{background:#EEF2F5;color:var(--ink-2);}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding:8px 0;}
.timeline::before{
  content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;
  background:var(--line);transform:translateX(-.5px);
}
.tl-item{position:relative;width:50%;padding-right:48px;margin-bottom:24px;}
.tl-item:nth-child(even){margin-left:50%;padding-right:0;padding-left:48px;}
.tl-node{
  position:absolute;top:26px;right:-6px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:2px solid var(--accent);
}
.tl-item:nth-child(even) .tl-node{right:auto;left:-6px;}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:box-shadow .24s ease-out,transform .24s ease-out;
}
.tl-card:hover{box-shadow:var(--sh-3);transform:translateY(-2px);}
.tl-date{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:14px;color:var(--accent);letter-spacing:.5px;margin-bottom:10px;
}
.tl-card h3{font-size:18px;margin-bottom:8px;}
.tl-card p{font-size:14px;line-height:1.75;color:var(--ink-2);margin:0;}
.tl-tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 分页 ---------- */
.pager-wrap{display:flex;justify-content:center;margin-top:40px;}
.pagination{
  display:flex;gap:8px;margin:0;padding:0;list-style:none;align-items:center;
}
.pagination li{margin:0;}
.pagination a,.pagination span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:42px;height:42px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;color:var(--brand-700);font-size:14px;font-family:var(--font-num);
  transition:background-color .22s ease-out,color .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.pagination a:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-900);box-shadow:var(--sh-1);}
.pagination .current{background:var(--brand-700);border-color:var(--brand-700);color:#fff;font-weight:700;}
.pagination .disabled span{color:#A9B6C0;}

/* ---------- 流程 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.flow-step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 22px;transition:box-shadow .24s ease-out,transform .24s ease-out;
}
.flow-step:hover{box-shadow:var(--sh-3);transform:translateY(-2px);}
.step-num{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-num);font-size:13px;letter-spacing:2px;color:var(--ink-2);
  margin-bottom:14px;
}
.step-num::before{content:"";width:2px;height:14px;background:var(--accent);border-radius:2px;}
.flow-step h3{font-size:17px;margin-bottom:10px;}
.flow-step p{font-size:14px;line-height:1.75;color:var(--ink-2);margin:0;}

/* ---------- 图文区块 ---------- */
.split{display:grid;grid-template-columns:7fr 5fr;gap:36px;align-items:center;}
.split-media img{border-radius:var(--r-lg);box-shadow:var(--sh-2);width:100%;object-fit:cover;aspect-ratio:4/3;}
.split-body h2{margin-bottom:16px;}
.plain-list li{
  position:relative;padding-left:22px;margin-bottom:12px;font-size:15px;color:var(--ink-2);line-height:1.75;
}
.plain-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;
  background:var(--accent-soft);border:2px solid var(--accent);
}
.plain-list li strong{color:var(--ink);font-weight:600;}

/* ---------- 字段行卡片 ---------- */
.spec-list{border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:var(--surface);}
.spec-row{
  display:flex;gap:24px;padding:20px 24px;border-bottom:1px dashed var(--line);
  transition:background-color .22s ease-out;
}
.spec-row:last-child{border-bottom:0;}
.spec-row:hover{background:rgba(230,240,245,.5);}
.spec-field{
  flex:0 0 180px;font-size:14px;font-weight:600;color:var(--ink-2);
  display:flex;align-items:flex-start;gap:10px;
}
.spec-field::before{content:"";width:3px;height:16px;background:var(--brand-500);border-radius:2px;margin-top:4px;flex:0 0 auto;}
.spec-value{flex:1 1 auto;font-size:15px;line-height:1.8;color:var(--ink);}

/* ---------- FAQ ---------- */
.faq-wrap .accordion{
  border:0;background:transparent;
}
.faq-wrap .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:14px;box-shadow:var(--sh-1);overflow:hidden;
  transition:box-shadow .22s ease-out;
}
.faq-wrap .accordion-item:hover{box-shadow:var(--sh-2);}
.faq-wrap .accordion-title{
  position:relative;display:flex;align-items:center;min-height:56px;
  padding:14px 56px 14px 24px;border:0;background:transparent;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:background-color .22s ease-out,color .22s ease-out;
}
.faq-wrap .accordion-title:hover{background:rgba(230,240,245,.5);color:var(--brand-700);}
.faq-wrap .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--accent);transition:transform .24s ease-out;
  border:0;margin:0;width:auto;height:auto;line-height:1;
}
.faq-wrap .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(45deg);}
.faq-wrap .accordion-content{
  display:none;padding:0 24px 24px;border:0;background:transparent;
  font-size:15px;line-height:1.85;color:var(--ink-2);
}
.faq-wrap .accordion-item.is-active .accordion-content{display:block;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-900);color:#fff;border-radius:var(--r-lg);
  padding:48px;display:grid;grid-template-columns:8fr 4fr;gap:32px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;pointer-events:none;
}
.cta-band h2{color:#fff;position:relative;z-index:1;}
.cta-band p{color:rgba(255,255,255,.82);margin-top:14px;position:relative;z-index:1;}
.cta-actions{display:flex;flex-direction:column;gap:12px;position:relative;z-index:1;}
.cta-actions .btn{width:100%;}
.cta-hint{font-size:13px;color:rgba(255,255,255,.66);display:flex;align-items:flex-start;gap:8px;position:relative;z-index:1;}

/* ---------- 表单 ---------- */
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--sh-2);
}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.form-row .req{color:var(--accent);margin-left:4px;}
.form-input,.form-select,.form-textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;font-size:15px;color:var(--ink);
  transition:border-color .22s ease-out,box-shadow .22s ease-out;
}
.form-input,.form-select{height:48px;padding:0 14px;}
.form-textarea{min-height:120px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-input:focus,.form-select:focus,.form-textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(232,98,31,.28);
}
.form-select{
  appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%234A5C6B'%3E%3Cpath d='M4.2 6.2 8 10l3.8-3.8 1 1L8 12 3.2 7.2z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:40px;
}
.form-tip{font-size:13px;color:var(--ink-2);margin-top:8px;}
.form-error{display:none;font-size:13px;color:#C0392B;margin-top:8px;}
.form-success{
  display:none;margin-top:16px;padding:12px 16px;border-radius:var(--r-sm);
  background:rgba(31,157,107,.1);color:#176E4B;font-size:14px;border:1px solid rgba(31,157,107,.25);
}
.trust-list li{display:flex;gap:12px;align-items:flex-start;margin-bottom:18px;font-size:14px;line-height:1.75;color:var(--ink-2);}
.trust-list i{color:var(--brand-500);margin-top:4px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.85);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:#fff;color:var(--brand-900);}
.footer-brand strong{display:block;color:#fff;font-size:16px;font-weight:700;line-height:1.3;}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:rgba(255,255,255,.62);letter-spacing:.6px;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:340px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{display:flex;gap:10px;font-size:14px;line-height:1.75;color:rgba(255,255,255,.72);margin-bottom:12px;}
.footer-contact i{color:var(--accent);margin-top:5px;flex:0 0 auto;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.78);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;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-3);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s ease-out,transform .24s ease-out,background-color .22s ease-out;z-index:70;
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--brand-900);}

/* ---------- 空态 / 骨架 ---------- */
.empty-state{
  display:none;flex-direction:column;align-items:center;justify-content:center;
  padding:48px 24px;border:1px dashed var(--line);border-radius:var(--r-md);
  background:var(--surface);text-align:center;
}
.empty-state i{font-size:26px;color:var(--brand-500);margin-bottom:14px;}
.empty-state p{font-size:14px;color:var(--ink-2);margin-bottom:18px;}

/* ---------- 移动端搜索弹层 ---------- */
.reveal.mobile-search-modal{
  border-radius:var(--r-lg);padding:24px;border:0;box-shadow:var(--sh-3);
}
.mobile-search-modal h4{margin-bottom:14px;font-size:16px;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;gap:26px;}
  .split-media img{aspect-ratio:16/9;}
  .cta-band{grid-template-columns:1fr;padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media screen and (max-width:1023px){
  .section{padding:64px 0;}
  h1{font-size:32px;}
  h2{font-size:24px;}
  .topbar{gap:14px;}
  .search-box{display:none;}
  .search-toggle{display:inline-flex;}
  .brand-text strong{font-size:15px;}
  .timeline::before{left:7px;transform:none;}
  .tl-item,
  .tl-item:nth-child(even){width:100%;margin-left:0;padding-left:34px;padding-right:0;}
  .tl-node,
  .tl-item:nth-child(even) .tl-node{left:2px;right:auto;top:24px;}
  .spec-row{flex-direction:column;gap:8px;}
  .spec-field{flex:0 0 auto;}
}
@media screen and (max-width:639px){
  .section{padding:56px 0;}
  .grid-container{padding-left:18px;padding-right:18px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  .metric-grid{grid-template-columns:1fr;gap:16px;}
  .metric-num{font-size:38px;}
  .flow-grid{grid-template-columns:1fr;}
  .page-banner{padding:40px 0 38px;}
  .banner-actions .btn{width:100%;}
  .cta-band{padding:28px 22px;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .back-top{right:16px;bottom:18px;}
}
@media screen and (max-width:520px){
  .topbar{height:60px;}
  .brand-text em{display:none;}
  .top-actions .btn-outline{height:38px;padding:0 14px;font-size:13px;}
  .cat-list a{padding:0 12px;font-size:13px;}
}

/* roulang page: category2 */
:root{
  --brand-900:#0A2E45;
  --brand-700:#0F4C6B;
  --brand-500:#16658C;
  --brand-100:#E6F0F5;
  --accent:#E8621F;
  --accent-soft:#FDEDE3;
  --ink:#10212E;
  --ink-2:#4A5C6B;
  --line:#E2E9EF;
  --bg:#F4F7F9;
  --surface:#FFFFFF;
  --ok:#1F9D6B;
  --warn:#C0392B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,33,46,.05);
  --sh-2:0 6px 18px rgba(16,33,46,.06);
  --sh-3:0 14px 36px rgba(16,33,46,.10);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"DIN Alternate","Inter","SF Mono","PingFang SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  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:var(--brand-700);text-decoration:none;transition:color .2s ease-out,background-color .2s ease-out,border-color .2s ease-out;}
a:hover{color:var(--accent);}
h1,h2,h3,h4{margin:0 0 14px;font-weight:700;line-height:1.32;color:var(--ink);}
h1{font-size:40px;letter-spacing:-.5px;}
h2{font-size:28px;letter-spacing:-.2px;}
h3{font-size:20px;}
h4{font-size:17px;}
p{margin:0 0 18px;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:3px solid rgba(232,98,31,.5);outline-offset:2px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

.grid-container{max-width:1200px;padding-left:20px;padding-right:20px;}
.section{padding:88px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{margin-bottom:38px;max-width:820px;}
.eyebrow{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:1.5px;color:var(--accent);margin-bottom:14px;}
.eyebrow::before{content:"";width:3px;height:16px;border-radius:2px;background:var(--accent);display:inline-block;}
.section-head h2{margin-bottom:12px;}
.section-sub{color:var(--ink-2);font-size:16px;margin:0;max-width:760px;}

/* ============ 顶部导航 ============ */
.site-header{background:var(--surface);border-bottom:1px solid var(--line);position:relative;z-index:40;transition:box-shadow .24s ease-out;}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.header-top{display:flex;align-items:center;gap:24px;height:72px;}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--brand-900);color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;letter-spacing:0;}
.logo-text strong{display:block;font-size:16px;color:var(--brand-900);line-height:1.25;letter-spacing:.2px;}
.logo-text em{display:block;font-style:normal;font-size:12px;color:var(--ink-2);letter-spacing:2px;line-height:1.4;}

.header-search{
  flex:1 1 auto;max-width:540px;display:flex;align-items:center;
  height:46px;padding:4px 4px 4px 16px;
  border:1px solid var(--line);background:var(--bg);border-radius:var(--r-pill);
  transition:border-color .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out;
}
.header-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(232,98,31,.28);background:#fff;}
.header-search > i{color:var(--ink-2);font-size:14px;}
.header-search input{flex:1 1 auto;min-width:0;border:0;background:transparent;height:100%;padding:0 10px;font-size:15px;color:var(--ink);outline:none;}
.header-search input::placeholder{color:#93a3b0;}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.icon-btn{display:none;place-items:center;width:42px;height:42px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;color:var(--brand-700);cursor:pointer;transition:all .2s ease-out;}
.icon-btn:hover{border-color:var(--brand-500);color:var(--accent);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;background:transparent;cursor:pointer;
  transition:background-color .22s ease-out,color .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out,transform .22s ease-out;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-2);}
.btn-primary:hover{background:#cf5317;color:#fff;box-shadow:var(--sh-3);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-1);}
.btn-outline{border-color:var(--brand-500);color:var(--brand-700);background:#fff;}
.btn-outline:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;box-shadow:var(--sh-2);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{color:var(--brand-700);border-color:var(--line);background:#fff;}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--accent);background:var(--brand-100);}
.btn-search{height:38px;padding:0 20px;font-size:14px;}
.header-login{height:44px;padding:0 18px;font-size:14px;}

/* ============ 分类条 ============ */
.cat-bar{background:var(--brand-100);border-top:1px solid var(--line);position:relative;}
.cat-list{display:flex;align-items:center;gap:2px;height:44px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.cat-list::-webkit-scrollbar{display:none;}
.cat-list a{display:inline-block;padding:0 14px;line-height:44px;font-size:15px;color:var(--ink-2);font-weight:500;position:relative;white-space:nowrap;}
.cat-list a:hover{color:var(--brand-700);}
.cat-list a.active{color:var(--brand-900);font-weight:600;}
.cat-list a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;background:var(--accent);}

/* ============ 首屏 ============ */
.page-hero{position:relative;background:var(--surface);border-bottom:1px solid var(--line);overflow:hidden;}
.grid-bg{
  position:absolute;inset:0;pointer-events:none;opacity:.6;
  background-image:
    repeating-linear-gradient(to right,rgba(22,101,140,.07) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(to bottom,rgba(22,101,140,.07) 0 1px,transparent 1px 64px);
}
.hero-inner{position:relative;padding:52px 0 68px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);margin-bottom:24px;}
.crumbs .sep{color:#b6c3cd;}
.crumbs .current{color:var(--ink-2);}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.5px;color:var(--brand-700);background:var(--brand-100);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:18px;}
.hero-badge i{color:var(--accent);}
.hero-title{margin-bottom:16px;max-width:780px;}
.hero-sub{font-size:17px;line-height:1.8;color:var(--ink-2);max-width:640px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 24px;font-size:14px;color:var(--ink-2);}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.hero-meta i{color:var(--accent);font-size:13px;}
.hero-meta b{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--brand-700);font-weight:700;}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-3);aspect-ratio:3/2;background:#e8eef2;}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{content:"";position:absolute;inset:0;background:var(--brand-900);opacity:.12;}

/* ============ 锚点条 ============ */
.anchor-bar{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(6px);}
.anchor-list{display:flex;align-items:center;gap:6px;height:54px;overflow-x:auto;scrollbar-width:none;}
.anchor-list::-webkit-scrollbar{display:none;}
.anchor-list a{font-size:14px;color:var(--ink-2);padding:7px 15px;border-radius:var(--r-pill);border:1px solid transparent;white-space:nowrap;}
.anchor-list a:hover{color:var(--brand-700);background:var(--brand-100);border-color:var(--line);}

/* ============ 卡片墙 ============ */
.topic-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--brand-500);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out;
}
.topic-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-left-color:var(--accent);}
.topic-media{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:#e8eef2;}
.topic-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out;}
.topic-card:hover .topic-media img{transform:scale(1.03);}
.tag{
  position:absolute;left:12px;top:12px;z-index:2;
  font-size:12px;font-weight:600;letter-spacing:.5px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);color:var(--brand-700);border:1px solid var(--line);
}
.topic-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1 1 auto;}
.topic-body h3{font-size:19px;margin-bottom:10px;}
.topic-body p{font-size:15px;line-height:1.75;color:var(--ink-2);margin:0 0 18px;}
.topic-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px solid var(--line);}
.topic-foot .idx{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:14px;font-weight:700;color:var(--brand-500);letter-spacing:1px;}
.topic-foot .label{font-size:13px;color:var(--ink-2);}
.topic-note{display:flex;align-items:flex-start;gap:12px;margin-top:32px;padding:20px 22px;background:var(--brand-100);border-radius:var(--r-md);font-size:14px;color:var(--brand-900);}
.topic-note i{color:var(--accent);margin-top:3px;}

/* ============ 适用情形 ============ */
.scene-card{
  height:100%;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--brand-500);
  border-radius:var(--r-md);padding:26px 24px;box-shadow:var(--sh-1);
  transition:box-shadow .24s ease-out,transform .24s ease-out,border-color .24s ease-out;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-left-color:var(--accent);}
.scene-icon{width:44px;height:44px;border-radius:12px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-size:17px;margin-bottom:18px;}
.scene-card h3{font-size:18px;margin-bottom:10px;}
.scene-card p{font-size:15px;color:var(--ink-2);margin:0;}

/* ============ 处理顺序 ============ */
.steps{border-top:1px solid var(--line);}
.step{display:grid;grid-template-columns:96px 1fr;gap:28px;padding:28px 0;border-bottom:1px solid var(--line);align-items:start;transition:background-color .2s ease-out;}
.step:hover{background:rgba(230,240,245,.42);}
.step-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:34px;font-weight:700;line-height:1;color:var(--brand-500);letter-spacing:1px;transition:color .2s ease-out;}
.step:hover .step-num{color:var(--accent);}
.step-body h3{font-size:19px;margin-bottom:8px;}
.step-body p{margin:0;font-size:15px;color:var(--ink-2);max-width:760px;}

/* ============ 对照 ============ */
.compare{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-2);padding:52px 0 12px;margin-top:22px;
}
.compare-badge{
  position:absolute;top:-18px;left:50%;transform:translateX(-50%);
  background:var(--brand-700);color:#fff;border:2px solid var(--accent);
  border-radius:var(--r-pill);padding:6px 22px;font-size:13px;font-weight:600;letter-spacing:2px;
}
.compare-col{padding:0 32px 28px;}
.compare-col + .compare-col{border-left:1px solid var(--line);}
.compare-col h3{font-size:18px;display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.compare-col h3 i{font-size:16px;}
.compare-col h3.ok i{color:var(--ok);}
.compare-col h3.warn i{color:#9aa9b5;}
.claim-list li{display:flex;gap:12px;padding:13px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--ink-2);}
.claim-list li:last-child{border-bottom:0;}
.claim-list i{margin-top:5px;font-size:14px;flex:0 0 auto;}
.claim-list .yes{color:var(--ok);}
.claim-list .no{color:#9aa9b5;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.accordion{background:transparent;border:0;}
.accordion .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow .22s ease-out;
}
.accordion .accordion-item:hover{box-shadow:var(--sh-2);}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 24px;font-size:16px;font-weight:600;color:var(--ink);
  background:transparent;border:0;line-height:1.5;transition:background-color .2s ease-out,color .2s ease-out;
}
.accordion .accordion-title:hover{background:rgba(230,240,245,.5);color:var(--brand-700);}
.accordion .accordion-title::before{display:none;}
.accordion .accordion-title::after{
  content:"+";font-size:22px;font-weight:400;line-height:1;color:var(--accent);
  transition:transform .24s ease-out;flex:0 0 auto;
}
.accordion .accordion-item.is-active .accordion-title::after{transform:rotate(45deg);}
.accordion .accordion-content{padding:0 24px 24px;color:var(--ink-2);font-size:15px;line-height:1.8;background:transparent;border:0;}
.accordion .accordion-content p{margin:0 0 10px;}
.accordion .accordion-content p:last-child{margin-bottom:0;}

/* ============ CTA / 表单 ============ */
.cta-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-2);padding:44px 40px;
}
.cta-card h2{margin-bottom:10px;}
.cta-card .lead{color:var(--ink-2);font-size:16px;margin-bottom:28px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field label .req{color:var(--accent);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;font-size:15px;color:var(--ink);
  border:1px solid var(--line);border-radius:10px;background:#fff;outline:none;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field textarea{height:auto;min-height:126px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field select{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%234A5C6B' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:12px;padding-right:38px;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(232,98,31,.28);}
.field .hint{font-size:13px;color:var(--ink-2);margin-top:8px;}
.field.error input,.field.error select,.field.error textarea{border-color:var(--warn);}
.field .err-msg{display:none;font-size:13px;color:var(--warn);margin-top:8px;}
.field.error .err-msg{display:block;}
.form-actions .btn{min-width:180px;}
.form-state{display:none;align-items:center;gap:10px;margin-top:18px;padding:13px 16px;border-radius:var(--r-sm);font-size:14px;}
.form-state.ok{display:flex;background:#E8F6F0;color:#146B4A;border:1px solid #BFE6D6;}
.form-state.ok i{color:var(--ok);}
.trust-list{display:flex;flex-direction:column;gap:14px;margin-top:6px;}
.trust-item{display:flex;gap:14px;padding:18px;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-md);}
.trust-item i{flex:0 0 auto;width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:var(--brand-100);color:var(--brand-700);font-size:15px;}
.trust-item h4{font-size:15px;margin-bottom:4px;}
.trust-item p{font-size:14px;color:var(--ink-2);margin:0;}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;border:1px solid var(--line);background:#fff;color:var(--brand-700);
  box-shadow:var(--sh-2);cursor:pointer;opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .24s ease-out,transform .24s ease-out,color .2s ease-out,background-color .2s ease-out;z-index:50;
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{background:var(--brand-700);color:#fff;border-color:var(--brand-700);}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.85);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:46px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-mark{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.12);color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;border:1px solid rgba(255,255,255,.18);}
.footer-brand strong{display:block;font-size:16px;color:#fff;line-height:1.3;}
.footer-brand em{display:block;font-style:normal;font-size:12px;letter-spacing:2px;color:rgba(255,255,255,.6);}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);margin:0;max-width:340px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.4px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.78);}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.72);margin-bottom:12px;}
.footer-contact i{margin-top:5px;color:var(--accent);font-size:13px;flex:0 0 auto;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.82);}
.footer-bottom a:hover{color:#fff;text-decoration:underline;}

/* ============ Reveal 搜索弹层 ============ */
.reveal{border-radius:var(--r-lg);border:0;box-shadow:var(--sh-3);padding:30px;background:#fff;outline:none;}
.reveal-overlay{background:rgba(10,46,69,.55);}
.modal-title{font-size:18px;margin-bottom:16px;}
.modal-search{display:flex;align-items:center;gap:10px;height:48px;padding:4px 4px 4px 16px;border:1px solid var(--line);border-radius:var(--r-pill);background:var(--bg);}
.modal-search i{color:var(--ink-2);font-size:14px;}
.modal-search input{flex:1 1 auto;min-width:0;border:0;background:transparent;height:100%;outline:none;font-size:15px;}
.reveal .close-button{color:var(--ink-2);}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  h1{font-size:32px;}
  .hero-title{font-size:32px;}
  .hero-inner{padding:40px 0 56px;}
  .section{padding:64px 0;}
  .hero-media{margin-top:32px;}
  .compare-col{padding:0 24px 24px;}
  .compare-col + .compare-col{border-left:0;border-top:1px solid var(--line);padding-top:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-card{padding:32px 26px;}
}
@media (max-width:639px){
  h1{font-size:28px;line-height:1.3;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  .hero-title{font-size:28px;}
  .hero-sub{font-size:16px;}
  .section{padding:56px 0;}
  .header-top{height:60px;gap:12px;}
  .header-search{display:none;}
  .icon-btn{display:grid;}
  .header-login{padding:0 14px;font-size:13px;}
  .header-login span.long{display:none;}
  .logo-text strong{font-size:15px;}
  .cat-bar::after{
    content:"";position:absolute;top:0;right:0;width:36px;height:44px;pointer-events:none;
    background:linear-gradient(to right,rgba(230,240,245,0),var(--brand-100));
  }
  .step{grid-template-columns:56px 1fr;gap:16px;padding:22px 0;}
  .step-num{font-size:26px;}
  .compare{padding-top:46px;}
  .compare-col{padding:0 18px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:34px;}
  .hero-actions .btn{width:100%;}
  .form-actions .btn{width:100%;}
  .cta-card{padding:26px 20px;}
  .topic-body{padding:18px 18px 16px;}
  .to-top{right:14px;bottom:14px;}
}

/* roulang page: category4 */
:root{
  --brand-900:#0A2E45; --brand-700:#0F4C6B; --brand-500:#16658C; --brand-100:#E6F0F5;
  --accent:#E8621F; --accent-soft:#FDEDE3;
  --ink:#10212E; --ink-2:#4A5C6B; --line:#E2E9EF; --bg:#F4F7F9; --surface:#FFFFFF; --ok:#1F9D6B;
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,33,46,.05); --sh-2:0 6px 18px rgba(16,33,46,.06); --sh-3:0 14px 36px rgba(16,33,46,.10);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"DIN Alternate","Inter","SF Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color .22s ease-out,background-color .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out}
a:hover,a:focus{color:var(--accent)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);line-height:1.3}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(232,98,31,.28);outline-offset:2px;border-radius:4px}
.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .24s ease-out}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.header-top{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{width:36px;height:36px;border-radius:var(--r-sm);background:var(--brand-700);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;letter-spacing:0;flex:0 0 36px}
.brand-text strong{display:block;font-size:16px;font-weight:700;color:var(--brand-900);line-height:1.25;letter-spacing:-.2px}
.brand-text em{display:block;font-style:normal;font-size:12px;letter-spacing:.5px;color:var(--ink-2);line-height:1.3}
.nav-search{flex:1 1 auto;max-width:560px;display:flex;align-items:center;height:48px;padding-left:18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);box-shadow:var(--sh-1);transition:border-color .22s ease-out,box-shadow .22s ease-out}
.nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(232,98,31,.28)}
.nav-search i{color:var(--ink-2);font-size:14px}
.nav-search input[type="search"]{flex:1;height:100%;border:0;background:transparent;padding:0 14px;font-size:14px;outline:none}
.nav-search input[type="search"]::placeholder{color:#8C9AA6}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--surface);border-radius:var(--r-sm);color:var(--brand-700)}
.nav-toggle:hover{border-color:var(--brand-500);color:var(--accent)}
.cat-bar{background:var(--brand-100);border-top:1px solid rgba(15,76,107,.08);border-bottom:1px solid var(--line)}
.cat-list{display:flex;align-items:center;gap:30px;height:44px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.cat-list::-webkit-scrollbar{display:none}
.cat-list a{position:relative;display:inline-block;line-height:44px;height:44px;font-size:14px;color:var(--ink-2);white-space:nowrap}
.cat-list a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s ease-out}
.cat-list a:hover{color:var(--brand-900);text-decoration:none}
.cat-list a:hover::after{transform:scaleX(1)}
.cat-list a.active{color:var(--brand-900);font-weight:600}
.cat-list a.active::after{transform:scaleX(1)}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-pill);font-size:15px;font-weight:600;border:1px solid transparent;transition:background-color .22s ease-out,color .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out,transform .16s ease-out;white-space:nowrap}
.btn:hover{text-decoration:none}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:#CF5314;color:#fff;box-shadow:var(--sh-2)}
.btn-secondary{background:var(--brand-700);color:#fff}
.btn-secondary:hover{background:var(--brand-900);color:#fff;box-shadow:var(--sh-2)}
.btn-outline{background:transparent;color:var(--brand-700);border-color:var(--brand-500)}
.btn-outline:hover{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}
.btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-light:hover{background:#fff;color:var(--brand-900);border-color:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-search{height:38px;padding:0 20px;font-size:14px;margin-right:5px;border-radius:var(--r-pill)}
.btn-block{width:100%}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;letter-spacing:.5px;background:var(--brand-100);color:var(--brand-700);white-space:nowrap}
.badge-accent{background:var(--accent-soft);color:#B94710}
.badge-ok{background:rgba(31,157,107,.12);color:var(--ok)}
.badge-plain{background:#EEF2F5;color:var(--ink-2)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.5px;color:var(--brand-500);background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 14px;box-shadow:var(--sh-1)}

/* ============ 面包屑 ============ */
.crumbs{background:var(--surface);border-bottom:1px solid var(--line)}
.crumbs nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;line-height:1;padding:14px 0;color:var(--ink-2)}
.crumbs span{color:#A9B6C0}
.crumbs em{font-style:normal;color:var(--ink-2)}
.crumbs a{color:var(--brand-700)}

/* ============ 首屏 ============ */
.hero{position:relative;padding:60px 0 72px;background-color:var(--bg);background-image:linear-gradient(to right,rgba(16,33,46,.05) 1px,transparent 1px),linear-gradient(to bottom,rgba(16,33,46,.05) 1px,transparent 1px);background-size:52px 52px;border-bottom:1px solid var(--line)}
.hero-copy h1{font-size:40px;letter-spacing:-.5px;line-height:1.28;margin:18px 0 16px}
.hero-sub{font-size:16px;color:var(--ink-2);max-width:640px;margin-bottom:20px}
.hero-meta{display:flex;align-items:baseline;gap:8px;font-size:14px;color:var(--ink-2);padding:12px 0 4px;border-top:1px solid var(--line);max-width:520px}
.hero-meta .count-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:30px;font-weight:700;color:var(--brand-700);line-height:1}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-actions .btn-note{font-size:13px;color:var(--ink-2);align-self:center}
.hero-media{position:relative;margin-top:28px}
.hero-media img{border-radius:var(--r-lg);box-shadow:var(--sh-3);aspect-ratio:3/2;object-fit:cover;width:100%;background:#DCE5EB}
.hero-media::after{content:"";position:absolute;inset:0;border-radius:var(--r-lg);background:rgba(10,46,69,.10);pointer-events:none}

/* ============ 板块通用 ============ */
.section{padding:88px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px}
.section-head h2{font-size:28px;letter-spacing:-.3px}
.section-head .sec-note{font-size:14px;color:var(--ink-2);max-width:560px}
.sec-index{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.sec-index .idx{font-family:var(--font-num);font-size:14px;letter-spacing:1px;color:var(--brand-500)}
.sec-index .bar{width:24px;height:2px;background:var(--accent);display:inline-block}
.section-lead{font-size:15px;color:var(--ink-2);max-width:760px;margin-bottom:32px}

/* ============ 对照行卡片 ============ */
.spec-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;margin-bottom:28px}
.spec-panel-head{display:flex;align-items:center;gap:12px;padding:16px 24px;background:var(--brand-100);border-bottom:1px solid var(--line)}
.spec-panel-head h3{font-size:17px}
.spec-panel-head .badge{margin-left:auto}
.spec-row{position:relative;display:grid;grid-template-columns:220px 1fr;gap:24px;padding:20px 24px;border-bottom:1px dashed var(--line);transition:background-color .22s ease-out}
.spec-row:last-child{border-bottom:0}
.spec-row::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand-500);opacity:0;transition:opacity .22s ease-out}
.spec-row:hover{background:rgba(230,240,245,.45)}
.spec-row:hover::before{opacity:1}
.spec-key{display:flex;flex-direction:column;gap:4px;font-size:15px;font-weight:600;color:var(--ink)}
.spec-key .k-idx{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:12px;letter-spacing:1px;color:var(--brand-500);font-weight:400}
.spec-val{font-size:15px;color:var(--ink-2);line-height:1.8}
.spec-val strong{color:var(--ink);font-weight:600}
.spec-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}

/* ============ 两栏对照 ============ */
.compare{display:grid;grid-template-columns:1fr;gap:24px}
.compare-col{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px;box-shadow:var(--sh-1);transition:box-shadow .22s ease-out,transform .22s ease-out}
.compare-col:hover{box-shadow:var(--sh-3);transform:translateY(-2px)}
.compare-col h3{font-size:19px;margin-bottom:6px}
.compare-col .col-note{font-size:14px;color:var(--ink-2);margin-bottom:18px}
.compare-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--ink-2)}
.compare-list li:last-child{border-bottom:0}
.compare-list .ico{flex:0 0 22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;margin-top:3px}
.ico-yes{background:rgba(31,157,107,.12);color:var(--ok)}
.ico-no{background:#EEF2F5;color:var(--ink-2)}

/* ============ 卡片网格 ============ */
.card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1);transition:box-shadow .22s ease-out,transform .22s ease-out;height:100%;overflow:hidden}
.card::before{content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;background:var(--brand-500);border-radius:0 3px 3px 0}
.card:hover{box-shadow:var(--sh-3);transform:translateY(-2px)}
.card:hover::before{background:var(--accent)}
.card h3{font-size:18px;margin-bottom:8px}
.card p{font-size:14px;color:var(--ink-2);margin-bottom:0}
.card .card-idx{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:12px;letter-spacing:1px;color:var(--brand-500);display:block;margin-bottom:10px}
.card-media{padding:0}
.card-media img{aspect-ratio:16/10;object-fit:cover;width:100%;border-radius:var(--r-lg) var(--r-lg) 0 0;background:#DCE5EB;transition:transform .24s ease-out}
.card-media:hover img{transform:scale(1.03)}
.card-body{padding:20px 24px 24px}
.card-body .card-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-2);margin-top:14px}

/* ============ 步骤流程 ============ */
.steps{display:grid;grid-template-columns:1fr;gap:20px}
.step{display:flex;gap:18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px 24px;box-shadow:var(--sh-1);transition:box-shadow .22s ease-out,transform .22s ease-out}
.step:hover{box-shadow:var(--sh-3);transform:translateY(-2px)}
.step-no{flex:0 0 44px;height:44px;border-radius:var(--r-md);background:var(--brand-100);color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-family:var(--font-num);font-size:17px;font-weight:700}
.step h3{font-size:17px;margin-bottom:6px}
.step p{font-size:14px;color:var(--ink-2);margin-bottom:0}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto}
.accordion.faq-accordion{border:0;background:transparent}
.faq-accordion .accordion-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-1);margin-bottom:12px;overflow:hidden;transition:box-shadow .22s ease-out,border-color .22s ease-out}
.faq-accordion .accordion-item:hover{border-color:#CFDCE5;box-shadow:var(--sh-2)}
.faq-accordion .accordion-item.is-active{border-color:var(--brand-500);box-shadow:var(--sh-2)}
.faq-accordion .accordion-title{display:flex;align-items:center;height:56px;padding:0 52px 0 24px;font-size:16px;font-weight:600;color:var(--ink);border:0;position:relative;transition:background-color .22s ease-out,color .22s ease-out}
.faq-accordion .accordion-title:hover{background:rgba(230,240,245,.5);color:var(--brand-900);text-decoration:none}
.faq-accordion .accordion-title::before{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);font-size:22px;font-weight:400;color:var(--accent);line-height:1;transition:transform .22s ease-out}
.faq-accordion .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(45deg)}
.faq-accordion .accordion-content{padding:0 24px 24px;border:0;color:var(--ink-2);font-size:15px;line-height:1.8;background:var(--surface)}
.faq-accordion .accordion-content p{margin-bottom:12px}

/* ============ CTA ============ */
.cta-band{background:var(--brand-900);color:rgba(255,255,255,.88);padding:64px 0}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px}
.cta-band .cta-lead{font-size:15px;color:rgba(255,255,255,.72);max-width:520px;margin-bottom:0}
.trust-list li{display:flex;gap:12px;padding:12px 0;font-size:14px;color:rgba(255,255,255,.78);border-bottom:1px solid rgba(255,255,255,.12)}
.trust-list li:last-child{border-bottom:0}
.trust-list i{color:var(--accent);margin-top:4px}
.form-card{background:var(--surface);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-3)}
.form-card h3{font-size:19px;margin-bottom:6px}
.form-card .form-note{font-size:13px;color:var(--ink-2);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field label .req{color:var(--accent)}
.field input[type="text"],.field input[type="tel"],.field select,.field textarea{width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface);font-size:14px;outline:none;transition:border-color .22s ease-out,box-shadow .22s ease-out}
.field textarea{height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.field select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2 4.5 6 8.5l4-4' fill='none' stroke='%234A5C6B' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:12px}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(232,98,31,.28)}
.field.has-error input,.field.has-error textarea{border-color:#C0392B}
.field .err-msg{display:none;font-size:13px;color:#C0392B;margin-top:6px}
.field.has-error .err-msg{display:block}
.form-success{display:none;margin-top:14px;padding:12px 16px;border-radius:var(--r-sm);background:rgba(31,157,107,.12);color:#14724D;font-size:14px}
.form-success.show{display:block}

/* ============ 分类分页 ============ */
.pager-wrap{padding:0 0 88px}
.cat-pager{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.cat-pager a{display:inline-flex;align-items:center;justify-content:center;min-width:44px;height:44px;padding:0 16px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);color:var(--brand-700);font-size:14px;box-shadow:var(--sh-1)}
.cat-pager a:hover{border-color:var(--brand-500);background:var(--brand-100);color:var(--brand-900);text-decoration:none}
.cat-pager .current{background:var(--brand-700);border-color:var(--brand-700);color:#fff;pointer-events:none}
.cat-pager .pager-more{border-style:dashed;color:var(--ink-2)}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.85);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--accent)}
.footer-brand strong{display:block;color:#fff;font-size:16px;line-height:1.25}
.footer-brand em{display:block;font-style:normal;font-size:12px;letter-spacing:.5px;color:rgba(255,255,255,.6)}
.footer-desc{font-size:14px;color:rgba(255,255,255,.68);line-height:1.8;margin:0}
.footer-links li,.footer-contact li{margin-bottom:12px;font-size:14px;line-height:1.7}
.footer-links a{color:rgba(255,255,255,.78)}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-contact li{display:flex;gap:10px;color:rgba(255,255,255,.68)}
.footer-contact i{color:var(--accent);margin-top:5px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;border-top:1px solid rgba(255,255,255,.14);padding:20px 0 28px;font-size:13px;color:rgba(255,255,255,.6)}
.footer-bottom a{color:rgba(255,255,255,.8)}
.footer-bottom a:hover{color:#fff}

/* ============ Reveal 搜索层 ============ */
.reveal.search-reveal{border-radius:var(--r-lg);padding:24px}
.search-reveal h4{font-size:16px;margin-bottom:14px}
.search-reveal .nav-search{max-width:100%;box-shadow:none}
.search-reveal .search-tips{font-size:13px;color:var(--ink-2);margin:14px 0 0}

/* ============ 图片占位 ============ */
img{background:#DCE5EB}

/* ============ 响应式 ============ */
@media screen and (min-width:1024px){
  .compare{grid-template-columns:1fr 1fr;gap:28px}
  .steps{grid-template-columns:1fr 1fr}
  .footer-grid{gap:44px}
  .spec-row5{grid-template-columns:220px 1fr}
}
@media screen and (max-width:1199px){
  .hero-copy h1{font-size:36px}
}
@media screen and (max-width:1023px){
  .section{padding:64px 0}
  .hero{padding:44px 0 56px}
  .hero-copy h1{font-size:32px}
  .nav-search{max-width:360px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .spec-row{grid-template-columns:180px 1fr;gap:18px;padding:18px 20px}
}
@media screen and (max-width:767px){
  .grid-container{padding-left:18px;padding-right:18px}
  .header-top{height:60px;gap:12px}
  .nav-search{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .brand-text strong{font-size:15px}
  .header-actions .btn-outline{padding:0 14px;height:40px;font-size:13px}
  .cat-list{gap:22px}
  .hero{padding:32px 0 44px;background-size:38px 38px}
  .hero-copy h1{font-size:28px;letter-spacing:-.3px}
  .hero-sub{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-actions .btn-note{text-align:center}
  .section{padding:56px 0}
  .section-head h2{font-size:23px}
  .section-lead{font-size:14px;margin-bottom:24px}
  .spec-row{grid-template-columns:1fr;gap:8px}
  .spec-key{flex-direction:row;align-items:center;gap:10px}
  .card{padding:20px}
  .cta-band{padding:48px 0}
  .cta-band h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .faq-accordion .accordion-title{height:auto;min-height:56px;padding:16px 48px 16px 18px;font-size:15px;line-height:1.6}
  .pager-wrap{padding-bottom:56px}
  .cat-pager a{min-width:40px;height:40px;padding:0 12px;font-size:13px}
}
@media screen and (max-width:519px){
  .hero-copy h1{font-size:26px}
  .hero-meta{flex-wrap:wrap}
  .brand-text em{display:none}
  .header-actions .btn-outline span.long{display:none}
}