/* roulang page: index */
:root{
  --ink-900:#16202A; --ink-600:#5A6B78; --ink-300:#9AA8B2;
  --line:#E3E8ED; --brand-700:#0E5B75; --brand-600:#12718F; --brand-50:#EDF5F8;
  --accent-500:#E07A32; --accent-50:#FDF2E9; --ok:#2E9E7B;
  --bg:#F6F8FA; --card:#FFFFFF;
  --radius-card:14px; --radius-btn:10px; --radius-img:12px;
  --shadow-1:0 1px 2px rgba(22,32,42,.05);
  --shadow-2:0 8px 20px rgba(22,32,42,.07);
  --shadow-3:0 16px 36px rgba(22,32,42,.10);
  --gap-section:96px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0; background:var(--bg); color:var(--ink-900);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px; line-height:1.85; letter-spacing:0;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-600);text-decoration:underline;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:600;color:var(--ink-900);}
p{margin:0 0 18px;max-width:760px;}
ul,ol{margin:0 0 18px;padding-left:22px;}
li{margin-bottom:8px;}
button,input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-1);}
.nav-inner{display:flex;align-items:center;gap:28px;min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{width:38px;height:38px;border-radius:11px;background:var(--brand-50);display:flex;align-items:center;justify-content:center;color:var(--brand-700);flex:0 0 auto;}
.brand-text{font-size:18px;font-weight:600;color:var(--ink-900);white-space:nowrap;}
.brand-text small{display:block;font-size:12px;font-weight:400;color:var(--ink-300);line-height:1.2;}
.nav-links{display:flex;align-items:center;gap:6px;margin:0;padding:0;list-style:none;flex:1 1 auto;}
.nav-links li{margin:0;}
.nav-link{display:flex;align-items:center;min-height:44px;padding:0 14px;font-size:15px;color:var(--ink-600);border-bottom:2px solid transparent;transition:color .18s ease,border-color .18s ease;}
.nav-link:hover{color:var(--brand-700);text-decoration:none;}
.nav-link.active{color:var(--brand-700);font-weight:600;border-bottom-color:var(--brand-700);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{position:relative;}
.nav-search input{width:220px;max-width:240px;height:42px;padding:0 14px 0 38px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;box-shadow:var(--shadow-1);font-size:14px;}
.nav-search input::placeholder{color:var(--ink-300);}
.nav-search input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 1px var(--brand-600);}
.nav-search .ico{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--ink-300);line-height:0;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;align-items:center;justify-content:center;}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff;}
.mobile-panel ul{list-style:none;margin:0;padding:0;}
.mobile-panel a{display:block;padding:15px 20px;border-bottom:1px solid var(--line);color:var(--ink-700,#16202A);font-size:15px;}
.mobile-panel a.active{color:var(--brand-700);font-weight:600;background:var(--brand-50);}
.mobile-panel .panel-cta{padding:16px 20px 20px;}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:10px 24px;border-radius:var(--radius-btn);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease;text-decoration:none;}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:0 6px 16px rgba(14,91,117,.18);}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);}
.btn-sm{min-height:40px;padding:8px 18px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700);}
.link-arrow i{font-style:normal;transition:transform .18s ease;}
.link-arrow:hover i{transform:translateX(2px);}
.badge{display:inline-block;padding:4px 10px;border-radius:999px;font-size:12.5px;line-height:1.6;background:var(--brand-50);color:var(--brand-700);}
.badge-warm{background:var(--accent-50);color:var(--accent-500);}

/* ---------- hero ---------- */
.hero{background:#fff;border-bottom:1px solid var(--line);padding:64px 0 72px;}
.hero-grid{display:grid;grid-template-columns:6fr 5fr;gap:56px;align-items:center;}
.hero h1{font-size:clamp(28px,3.2vw,42px);font-weight:600;margin:18px 0 16px;}
.hero-sub{font-size:18px;color:var(--brand-700);font-weight:600;margin-bottom:14px;}
.hero-lead{color:var(--ink-600);font-size:16px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;padding-top:20px;border-top:1px dashed var(--line);}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-600);}
.trust-item span.dot{width:26px;height:26px;border-radius:8px;background:var(--brand-50);color:var(--brand-700);display:inline-flex;align-items:center;justify-content:center;font-size:13px;}
.hero-figure{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-3);}
.hero-figure img{width:100%;height:100%;min-height:340px;object-fit:cover;border-radius:16px;transition:transform .3s ease;}
.hero-figure:hover img{transform:scale(1.02);}
.hero-figure::after{content:"";position:absolute;inset:0;background:rgba(14,91,117,.10);border-radius:16px;pointer-events:none;}
.hero-figure .fig-note{position:absolute;left:18px;bottom:18px;background:#fff;border-radius:12px;padding:10px 16px;font-size:13px;color:var(--ink-600);box-shadow:var(--shadow-2);}

/* ---------- sections ---------- */
.section{padding:var(--gap-section) 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(22px,2.2vw,30px);position:relative;padding-bottom:14px;}
.section-head h2::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:3px;border-radius:2px;background:var(--brand-700);}
.section-head p{margin:8px 0 0;color:var(--ink-600);font-size:15px;}
.eyebrow{display:inline-block;font-size:13px;color:var(--accent-500);background:var(--accent-50);border-radius:999px;padding:4px 12px;margin-bottom:12px;}

/* ---------- metrics ---------- */
.metrics{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-2);display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;}
.metric{padding:28px 24px;border-right:1px solid var(--line);}
.metric:last-child{border-right:none;}
.metric .value{font-size:34px;font-weight:600;color:var(--accent-500);line-height:1.2;}
.metric .value small{font-size:16px;margin-left:2px;}
.metric .label{font-size:14px;color:var(--ink-600);margin-top:6px;}
.metric .note{font-size:12.5px;color:var(--ink-300);margin-top:4px;}

/* ---------- service matrix ---------- */
.matrix{display:grid;grid-template-columns:4fr 8fr;gap:32px;align-items:start;}
.index-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-2);overflow:hidden;}
.index-item{display:flex;gap:14px;padding:20px 22px;border-bottom:1px solid var(--line);cursor:pointer;transition:background .18s ease,color .18s ease;background:#fff;border-left:3px solid transparent;width:100%;text-align:left;}
.index-item:last-child{border-bottom:none;}
.index-item .no{font-size:13px;color:var(--ink-300);font-weight:600;padding-top:3px;}
.index-item .tt{font-size:16px;font-weight:600;color:var(--ink-900);}
.index-item .ss{font-size:13.5px;color:var(--ink-600);margin-top:2px;}
.index-item:hover{background:var(--brand-50);}
.index-item.active{background:var(--brand-50);border-left-color:var(--brand-700);}
.index-item.active .no,.index-item.active .tt{color:var(--brand-700);}
.panel-stack{display:grid;gap:20px;}
.panel-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-2);padding:24px;display:grid;grid-template-columns:1fr 200px;gap:24px;align-items:center;transition:transform .18s ease,box-shadow .18s ease;}
.panel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.panel-card h3{font-size:18px;margin-bottom:10px;}
.panel-card p{font-size:15px;color:var(--ink-600);margin-bottom:14px;-webkit-line-clamp:3;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden;}
.panel-card img{width:100%;height:132px;object-fit:cover;border-radius:var(--radius-img);}
.panel-icon{width:36px;height:36px;border-radius:10px;background:var(--brand-50);color:var(--brand-700);display:inline-flex;align-items:center;justify-content:center;margin-bottom:12px;font-size:15px;font-weight:600;}

/* ---------- posts ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-2);overflow:hidden;display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease;}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.post-cover{display:block;overflow:hidden;}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease;}
.post-card:hover .post-cover img{transform:scale(1.02);}
.post-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.post-title{font-size:17.5px;margin:12px 0 10px;}
.post-title a{color:var(--ink-900);}
.post-title a:hover{color:var(--brand-700);text-decoration:none;}
.post-excerpt{font-size:14.5px;color:var(--ink-600);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-300);padding-top:14px;border-top:1px solid var(--line);}
.empty-state{background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card);padding:48px 24px;text-align:center;color:var(--ink-600);}
.empty-state svg{margin-bottom:12px;color:var(--ink-300);}
.empty-state p{margin:0 auto 18px;}

/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-2);overflow:hidden;}
.compare-col{padding:28px 26px;}
.compare-col + .compare-col{border-left:1px solid var(--line);}
.compare-col.highlight{background:#FCFEFE;box-shadow:inset 0 3px 0 var(--accent-500);}
.compare-col h3{font-size:18px;margin-bottom:6px;}
.compare-col .cap{font-size:13.5px;color:var(--ink-300);margin-bottom:18px;}
.compare-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14.5px;}
.compare-row:last-child{border-bottom:none;}
.compare-row .k{color:var(--ink-600);}
.compare-row .v{font-weight:600;color:var(--ink-900);}
.compare-row .up{color:var(--ok);font-size:13px;font-weight:600;margin-left:6px;}

/* ---------- scenario ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-2);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease;}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.scene-card img{width:100%;height:150px;object-fit:cover;}
.scene-card .sc-body{padding:20px;}
.scene-card h3{font-size:17px;margin-bottom:8px;}
.scene-card p{font-size:14.5px;color:var(--ink-600);margin:0;}

/* ---------- faq ---------- */
.faq-wrap{max-width:780px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:12px;padding:20px 4px 20px 0;font-size:17px;font-weight:600;color:var(--ink-900);border-left:3px solid transparent;padding-left:0;transition:color .18s ease,border-color .18s ease,padding .18s ease;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";margin-left:auto;color:var(--ink-300);font-weight:400;font-size:20px;line-height:1;}
.faq-item[open] summary{color:var(--brand-700);border-left-color:var(--brand-700);padding-left:14px;}
.faq-item[open] summary::after{content:"–";color:var(--brand-700);}
.faq-item .answer{padding:0 4px 22px 14px;font-size:15px;color:var(--ink-600);}
.faq-item .answer p{max-width:100%;margin-bottom:10px;}

/* ---------- form ---------- */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
.point-list{list-style:none;padding:0;margin:0 0 24px;}
.point-list li{display:flex;gap:12px;margin-bottom:14px;font-size:15px;color:var(--ink-600);}
.point-list b{color:var(--ink-900);}
.point-list .mark{flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:var(--brand-50);color:var(--brand-700);display:inline-flex;align-items:center;justify-content:center;font-size:13px;margin-top:4px;}
.service-time{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;padding:18px 20px;font-size:14px;color:var(--ink-600);box-shadow:var(--shadow-1);}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-3);padding:28px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;color:var(--ink-600);margin-bottom:7px;}
.field input,.field select,.field textarea{width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn);padding:12px 14px;font-size:15px;box-shadow:var(--shadow-1);transition:border-color .18s ease,box-shadow .18s ease;}
.field textarea{min-height:110px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 1px var(--brand-600);}
.field .hint{font-size:13px;color:var(--ink-300);margin-top:6px;}
.form-card .btn{width:100%;}
.form-note{font-size:13px;color:var(--ink-300);margin:12px 0 0;}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand-50);border:1px solid #D8E8EE;border-radius:var(--radius-card);padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{margin:0;color:var(--ink-600);font-size:15px;}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 0;margin-top:12px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:34px;height:34px;}
.footer-brand strong{font-size:17px;}
.site-footer p{font-size:14px;color:var(--ink-600);max-width:340px;margin-bottom:14px;}
.footer-col h4{font-size:15px;margin-bottom:14px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--ink-600);}
.footer-col a:hover{color:var(--brand-700);}
.footer-bottom{border-top:1px solid var(--line);padding:18px 0;font-size:13px;color:var(--ink-300);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 32px;}
  .nav-search input{width:170px;}
}
@media (max-width:991px){
  :root{--gap-section:64px;}
  .nav-links,.nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure img{min-height:260px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(2){border-right:none;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line);}
  .matrix{grid-template-columns:1fr;gap:22px;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;gap:28px;}
  .compare{grid-template-columns:1fr;}
  .compare-col + .compare-col{border-left:none;border-top:1px solid var(--line);}
  .compare-col.highlight{box-shadow:inset 0 3px 0 var(--accent-500);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:575px){
  :root{--gap-section:48px;}
  .container{padding:0 20px;}
  body{font-size:15.5px;}
  .hero{padding:40px 0 48px;}
  .panel-card{grid-template-columns:1fr;}
  .panel-card img{height:160px;}
  .post-grid{grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-right:none;border-bottom:1px solid var(--line);}
  .metric:last-child{border-bottom:none;}
  .cta-band{padding:26px 22px;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;}
}

/* roulang page: article */
:root{
  --ink-900:#16202A;
  --ink-600:#5A6B78;
  --ink-300:#9AA8B2;
  --line:#E3E8ED;
  --brand-700:#0E5B75;
  --brand-600:#12718F;
  --brand-50:#EDF5F8;
  --accent-500:#E07A32;
  --accent-50:#FDF2E9;
  --ok:#2E9E7B;
  --bg:#F6F8FA;
  --card:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(22,32,42,.05);
  --shadow-2:0 8px 20px rgba(22,32,42,.07);
  --shadow-3:0 16px 36px rgba(22,32,42,.10);
  --maxw:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-600);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3;color:var(--ink-900);}
p{margin:0 0 16px;max-width:760px;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 40px;
}
@media (max-width:991px){ .container{padding:0 32px;} }
@media (max-width:575px){ .container{padding:0 20px;} }

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:10px 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand-700);
  font-weight:600;
  font-size:14px;
  min-height:44px;
}
.btn-link-arrow .arrow{transition:transform .18s ease;}
.btn-link-arrow:hover .arrow{transform:translateX(2px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  padding:4px 10px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  line-height:1.5;
  background:var(--brand-50);
  color:var(--brand-700);
}
.badge-accent{background:var(--accent-50);color:var(--accent-500);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--ink-900);
  font-size:18px;
  font-weight:600;
}
.brand:hover{color:var(--brand-700);}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:10px;
  background:var(--brand-50);
  color:var(--brand-700);
  flex-shrink:0;
}
.site-nav{margin-left:12px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-600);
  border-bottom:2px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.nav-link:hover,
.nav-link.active{color:var(--brand-700);border-bottom-color:var(--brand-700);}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
  flex-shrink:0;
}
.search-box{
  position:relative;
  display:flex;
  align-items:center;
}
.search-box input{
  width:220px;
  height:44px;
  padding:0 16px 0 40px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  font-size:14px;
  color:var(--ink-900);
  box-shadow:var(--shadow-1);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-box input::placeholder{color:var(--ink-300);}
.search-box input:focus{
  outline:none;
  border:2px solid var(--brand-600);
  padding:0 15px 0 39px;
  box-shadow:none;
}
.search-box .search-icon{
  position:absolute;
  left:14px;
  color:var(--ink-300);
  pointer-events:none;
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  color:var(--brand-700);
  cursor:pointer;
}
@media (max-width:991px){
  .nav-toggle{display:inline-flex;}
  .site-nav{
    display:none;
    position:absolute;
    left:0;
    right:0;
    top:100%;
    margin:0;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-3);
    padding:8px 0;
  }
  .site-nav.open{display:block;}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;}
  .nav-links li + li{border-top:1px solid var(--line);}
  .nav-link{
    border-bottom:none;
    border-left:3px solid transparent;
    padding:12px 32px;
    width:100%;
  }
  .nav-link:hover,
  .nav-link.active{border-left-color:var(--brand-700);border-bottom-color:transparent;}
  .search-box{display:none;}
}
@media (max-width:575px){
  .header-actions .btn-primary{display:none;}
  .brand{font-size:16px;}
  .nav-link{padding:12px 20px;}
}

/* ============ 面包屑 ============ */
.crumb-bar{
  background:#fff;
  border-bottom:1px solid var(--line);
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:14px 0;
  font-size:13px;
  color:var(--ink-300);
}
.crumb a{color:var(--ink-600);}
.crumb a:hover{color:var(--brand-700);}
.crumb .sep{color:var(--line);}
.crumb .current{color:var(--ink-600);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头 ============ */
.article-hero{
  background:#fff;
  border-bottom:1px solid var(--line);
  padding:44px 0 40px;
}
.article-hero-inner{max-width:820px;}
.article-hero h1{
  font-size:clamp(28px,3.2vw,42px);
  line-height:1.3;
  margin-bottom:18px;
  color:var(--ink-900);
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  font-size:13.5px;
  color:var(--ink-300);
  padding-top:18px;
  border-top:1px solid var(--line);
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line);}

/* ============ 阅读区 ============ */
.article-wrap{padding:56px 0 80px;}
.article-body{
  max-width:760px;
  margin:0 auto;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
}
.article-body p{margin:0 0 18px;max-width:760px;}
.article-body h2{
  position:relative;
  font-size:clamp(22px,2.2vw,30px);
  margin:44px 0 18px;
  padding-bottom:12px;
}
.article-body h2::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:28px;
  height:3px;
  background:var(--brand-700);
  border-radius:2px;
}
.article-body h3{font-size:19px;margin:30px 0 12px;}
.article-body ul,
.article-body ol{padding-left:24px;margin:0 0 18px;}
.article-body ul li{list-style:disc;margin-bottom:8px;}
.article-body ol li{list-style:decimal;margin-bottom:8px;}
.article-body blockquote{
  margin:24px 0;
  padding:16px 22px;
  border-left:3px solid var(--brand-700);
  background:var(--brand-50);
  border-radius:0 10px 10px 0;
  color:var(--ink-600);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  max-width:100%;
  height:auto;
  border-radius:var(--r-img);
  margin:24px auto;
}
.article-body a{
  color:var(--brand-700);
  text-decoration:underline;
  text-underline-offset:3px;
}
.article-body a:hover{color:var(--brand-600);}
.article-body code{
  background:#F1F4F7;
  border:1px solid var(--line);
  border-radius:6px;
  padding:1px 6px;
  font-size:14px;
}
.article-body pre{
  background:#F1F4F7;
  border:1px solid var(--line);
  border-radius:10px;
  padding:16px 18px;
  overflow-x:auto;
  margin:20px 0;
}
.article-body pre code{background:none;border:none;padding:0;}
.article-body table{
  width:100%;
  border-collapse:collapse;
  display:block;
  overflow-x:auto;
  margin:22px 0;
  border:1px solid var(--line);
  border-radius:10px;
  font-size:15px;
}
.article-body th,
.article-body td{
  padding:10px 16px;
  border-bottom:1px solid var(--line);
  text-align:left;
  white-space:nowrap;
}
.article-body th{background:var(--brand-50);color:var(--brand-700);font-weight:600;}
.article-body tr:last-child td{border-bottom:none;}

/* 无内容空态 */
.empty-state{
  max-width:760px;
  margin:0 auto;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-2);
  padding:48px 32px;
  text-align:center;
}
.empty-state .empty-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:56px;
  height:56px;
  border-radius:14px;
  background:var(--brand-50);
  color:var(--brand-700);
  margin-bottom:18px;
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{max-width:420px;margin:0 auto 22px;color:var(--ink-600);font-size:15px;}

/* ============ 标签 & 相关推荐 ============ */
.article-foot{max-width:760px;margin:0 auto;}
.tag-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  padding:24px 0;
  margin-top:40px;
  border-top:1px solid var(--line);
}
.tag-row .tag-label{font-size:13.5px;color:var(--ink-300);}
.tag{
  display:inline-flex;
  align-items:center;
  padding:5px 12px;
  border-radius:999px;
  background:var(--brand-50);
  color:var(--brand-700);
  font-size:13px;
  font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.tag:hover{background:var(--brand-700);color:#fff;}

.related-section{padding:8px 0 80px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:32px;
}
.section-head h2{
  position:relative;
  font-size:clamp(22px,2.2vw,30px);
  padding-bottom:12px;
}
.section-head h2::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:28px;
  height:3px;
  background:var(--brand-700);
  border-radius:2px;
}
.section-head .sub{font-size:14px;color:var(--ink-600);margin-top:8px;}
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
@media (max-width:991px){ .card-grid{grid-template-columns:repeat(2,1fr);} }
@media (max-width:575px){ .card-grid{grid-template-columns:1fr;} }

.post-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-2);
  overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease;
  height:100%;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.post-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--brand-50);
}
.post-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .3s ease;
}
.post-card:hover .post-thumb img{transform:scale(1.02);}
.post-body{
  padding:20px 22px 22px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.post-body .badge{align-self:flex-start;margin-bottom:12px;}
.post-title{
  font-size:17px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:10px;
}
.post-title a{color:var(--ink-900);}
.post-title a:hover{color:var(--brand-700);}
.post-excerpt{
  font-size:14px;
  color:var(--ink-600);
  line-height:1.75;
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  max-width:none;
}
.post-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--ink-300);
}
.post-foot .go{
  display:inline-flex;
  align-items:center;
  gap:5px;
  color:var(--brand-700);
  font-weight:600;
  font-size:13.5px;
}
.post-foot .go .arrow{transition:transform .18s ease;}
.post-card:hover .post-foot .go .arrow{transform:translateX(2px);}

.back-row{margin-top:36px;}
.center-actions{display:flex;justify-content:center;margin-top:36px;}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-50);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:56px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(20px,2vw,26px);margin-bottom:8px;}
.cta-inner p{margin:0;color:var(--ink-600);font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:#fff;
  border-top:1px solid var(--line);
  padding:56px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:40px;
}
@media (max-width:991px){ .footer-grid{grid-template-columns:1fr 1fr;gap:28px;} }
@media (max-width:575px){ .footer-grid{grid-template-columns:1fr;} }
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:9px;}
.site-footer p{font-size:14px;color:var(--ink-600);line-height:1.8;max-width:340px;}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
  color:var(--ink-900);
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{
  font-size:14px;
  color:var(--ink-600);
  display:inline-block;
  padding:2px 0;
}
.footer-col ul a:hover{color:var(--brand-700);text-decoration:underline;}
.footer-col p{margin-top:12px;font-size:13.5px;color:var(--ink-300);max-width:260px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--ink-300);
}

@media (max-width:991px){
  .article-wrap{padding:40px 0 64px;}
  .article-hero{padding:36px 0 32px;}
  .related-section{padding-bottom:64px;}
  .cta-band{padding:48px 0;}
}
@media (max-width:575px){
  .article-wrap{padding:32px 0 52px;}
  .article-hero h1{font-size:26px;}
  .crumb .current{max-width:100%;white-space:normal;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;justify-content:center;}
}

/* roulang page: category1 */
:root{
  --ink-900:#16202A;
  --ink-600:#5A6B78;
  --ink-300:#9AA8B2;
  --line:#E3E8ED;
  --brand-700:#0E5B75;
  --brand-600:#12718F;
  --brand-50:#EDF5F8;
  --accent-500:#E07A32;
  --accent-50:#FDF2E9;
  --ok:#2E9E7B;
  --bg:#F6F8FA;
  --card:#FFFFFF;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(22,32,42,.05);
  --shadow-2:0 8px 20px rgba(22,32,42,.07);
  --shadow-3:0 16px 36px rgba(22,32,42,.10);
  --sec-space:96px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-600);text-decoration:underline;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:600;color:var(--ink-900);}
p{margin:0 0 18px;max-width:760px;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:16px;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 40px;
}
@media (max-width:991px){.container{padding:0 32px;}}
@media (max-width:575px){.container{padding:0 20px;}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  min-height:72px;
  padding-top:10px;
  padding-bottom:10px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--ink-900);
  font-weight:600;
  font-size:18px;
  white-space:nowrap;
}
.brand:hover{text-decoration:none;color:var(--brand-700);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-50);color:var(--brand-700);
  border-radius:10px;
  border:1px solid rgba(14,91,117,.12);
}
.main-nav{flex:1 1 auto;}
.nav-links{display:flex;align-items:center;gap:6px;flex-wrap:wrap;}
.nav-link{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  color:var(--ink-600);
  font-size:15px;
  border-bottom:2px solid transparent;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--brand-700);text-decoration:none;background:var(--brand-50);border-radius:8px;}
.nav-link.active{color:var(--brand-700);font-weight:600;border-bottom-color:var(--brand-700);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.search-box input{
  width:200px;
  height:44px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-input);
  background:#fff;
  color:var(--ink-900);
  box-shadow:var(--shadow-1);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-box input::placeholder{color:var(--ink-300);}
.search-box input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 2px rgba(18,113,143,.14);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:10px 24px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  text-align:center;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand-700);color:#fff;}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-600);border-color:var(--brand-600);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-700);}
.link-arrow span{transition:transform .18s ease;}
.link-arrow:hover{text-decoration:none;color:var(--brand-600);}
.link-arrow:hover span{transform:translateX(2px);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  color:var(--brand-700);
}
.mobile-panel{
  display:none;
  background:#fff;
  border-top:1px solid var(--line);
  padding:8px 0 20px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel ul li{border-bottom:1px solid var(--line);}
.mobile-panel ul li:last-child{border-bottom:0;}
.mobile-panel a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 32px;
  color:var(--ink-600);
  font-size:15px;
}
.mobile-panel a.active{color:var(--brand-700);font-weight:600;background:var(--brand-50);}
.mobile-panel .panel-cta{padding:18px 32px 0;}

/* ---------- 页头 Banner ---------- */
.page-hero{
  background:var(--brand-50);
  border-bottom:1px solid var(--line);
  padding:36px 0 56px;
}
.breadcrumb-line{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--ink-300);
  margin-bottom:22px;
}
.breadcrumb-line a{color:var(--ink-600);}
.breadcrumb-line a:hover{color:var(--brand-700);}
.breadcrumb-line .sep{color:var(--ink-300);}
.breadcrumb-line .current{color:var(--ink-600);}
.page-hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  line-height:1.7;
}
.badge-brand{background:#fff;color:var(--brand-700);border:1px solid rgba(14,91,117,.16);}
.badge-accent{background:var(--accent-50);color:var(--accent-500);}
.page-hero h1{
  font-size:clamp(28px,3.2vw,42px);
  font-weight:600;
  margin:18px 0 14px;
}
.page-hero .hero-sub{
  font-size:17px;
  color:var(--ink-600);
  margin-bottom:22px;
  max-width:620px;
}
.hero-points{display:flex;flex-wrap:wrap;gap:20px;}
.hero-point{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--ink-600);
}
.hero-point svg{color:var(--brand-700);flex:0 0 auto;}
.page-hero-media{
  border-radius:var(--radius-img);
  overflow:hidden;
  background:var(--brand-50);
  box-shadow:var(--shadow-2);
  border:1px solid rgba(14,91,117,.10);
}
.page-hero-media img{
  width:100%;
  height:280px;
  object-fit:cover;
  transition:transform .35s ease;
}
.page-hero-media:hover img{transform:scale(1.02);}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec-space) 0;}
.section-head{margin-bottom:40px;}
.section-head h2{
  font-size:clamp(22px,2.2vw,30px);
  position:relative;
  padding-bottom:14px;
}
.section-head h2::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:28px;height:3px;
  border-radius:2px;
  background:var(--brand-700);
}
.section-head p{margin:16px 0 0;color:var(--ink-600);}
.section-head--row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.section--white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section--plain{background:var(--bg);}

/* ---------- 要点卡 ---------- */
.point-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.point-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  padding:24px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.point-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.point-icon{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--brand-50);
  color:var(--brand-700);
  margin-bottom:16px;
}
.point-card h3{font-size:18px;margin-bottom:10px;}
.point-card p{margin:0;color:var(--ink-600);font-size:15px;}

/* ---------- 正文两栏 + 粘性目录 ---------- */
.body-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 280px;
  gap:48px;
  align-items:start;
}
.toc{
  position:sticky;
  top:96px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  padding:22px;
}
.toc h3{font-size:15px;color:var(--ink-600);margin-bottom:14px;font-weight:600;}
.toc ul li{border-bottom:1px solid var(--line);}
.toc ul li:last-child{border-bottom:0;}
.toc ul li a{
  display:block;
  padding:11px 2px;
  font-size:14px;
  color:var(--ink-600);
}
.toc ul li a:hover{color:var(--brand-700);padding-left:6px;text-decoration:none;transition:padding .18s ease,color .18s ease;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:0;}
.timeline::before{
  content:"";
  position:absolute;
  left:19px;top:14px;bottom:14px;
  width:2px;
  background:var(--line);
}
.timeline-item{position:relative;padding-left:68px;padding-bottom:28px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-dot{
  position:absolute;
  left:0;top:0;
  width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:#fff;
  border:1px solid var(--line);
  color:var(--brand-700);
  font-weight:600;
  font-variant-numeric:tabular-nums;
  box-shadow:var(--shadow-1);
}
.timeline-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  padding:24px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.timeline-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.timeline-card h3{font-size:18px;margin-bottom:10px;}
.timeline-card p{color:var(--ink-600);font-size:15px;margin-bottom:14px;}
.meta-line{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--ink-300);}
.meta-line .dot{width:4px;height:4px;border-radius:50%;background:var(--line);align-self:center;}

/* ---------- 编号卡 ---------- */
.num-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:32px;
}
.num-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  padding:24px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.num-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.num-card .num{
  font-size:26px;
  font-weight:600;
  color:var(--accent-500);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
  margin-bottom:12px;
}
.num-card h3{font-size:17px;margin-bottom:8px;}
.num-card p{font-size:15px;color:var(--ink-600);margin:0;}

/* ---------- 图文区块 ---------- */
.media-block{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:40px;
  align-items:center;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  padding:24px;
}
.media-figure{
  border-radius:var(--radius-img);
  overflow:hidden;
  background:var(--brand-50);
  border:1px solid var(--line);
}
.media-figure img{width:100%;height:280px;object-fit:cover;transition:transform .35s ease;}
.media-block:hover .media-figure img{transform:scale(1.02);}
.media-body h3{font-size:20px;margin-bottom:14px;}
.media-body p{color:var(--ink-600);font-size:15px;}
.check-list{margin-top:10px;}
.check-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:9px 0;
  border-bottom:1px dashed var(--line);
  font-size:15px;
  color:var(--ink-600);
}
.check-list li:last-child{border-bottom:0;}
.check-list svg{color:var(--ok);flex:0 0 auto;margin-top:6px;}

/* ---------- 误区清单 ---------- */
.mis-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.mis-item{
  display:flex;
  gap:16px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  padding:22px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.mis-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.mis-tag{
  flex:0 0 auto;
  height:28px;
  padding:0 10px;
  display:inline-flex;align-items:center;
  border-radius:999px;
  background:var(--accent-50);
  color:var(--accent-500);
  font-size:12px;
  font-weight:600;
}
.mis-item h3{font-size:17px;margin-bottom:8px;}
.mis-item p{margin:0;font-size:15px;color:var(--ink-600);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:780px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:64px;
  padding:16px 4px 16px 0;
  background:transparent;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand-700);}
.faq-q .chev{
  flex:0 0 auto;
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  color:var(--brand-700);
  transition:transform .2s ease;
}
.faq-item.open .faq-q{color:var(--brand-700);border-left:3px solid var(--brand-700);padding-left:12px;}
.faq-item.open .chev{transform:rotate(180deg);}
.faq-a{
  display:none;
  padding:0 0 20px 12px;
  font-size:15px;
  color:var(--ink-600);
  max-width:700px;
}
.faq-item.open .faq-a{display:block;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-50);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:56px 0;
}
.cta-inner{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:32px;
  align-items:center;
}
.cta-inner h2{font-size:clamp(22px,2.2vw,28px);margin-bottom:12px;}
.cta-inner p{margin:0;color:var(--ink-600);max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#fff;
  border-top:1px solid var(--line);
  padding:56px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:600;color:var(--ink-900);margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;display:flex;align-items:center;justify-content:center;background:var(--brand-50);color:var(--brand-700);border-radius:10px;}
.site-footer p{font-size:14px;color:var(--ink-600);}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink-900);}
.footer-col ul li{padding:6px 0;}
.footer-col ul li a{font-size:14px;color:var(--ink-600);}
.footer-col ul li a:hover{color:var(--brand-700);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--ink-300);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .body-layout{grid-template-columns:minmax(0,1fr) 240px;gap:32px;}
}
@media (max-width:991px){
  :root{--sec-space:64px;}
  .nav-links,.search-box,.header-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{gap:16px;}
  .main-nav{flex:0 0 auto;}
  .page-hero-grid{grid-template-columns:1fr;gap:32px;}
  .page-hero-media img{height:240px;}
  .point-grid{grid-template-columns:repeat(2,1fr);}
  .num-grid{grid-template-columns:repeat(2,1fr);}
  .media-block{grid-template-columns:1fr;gap:24px;}
  .mis-list{grid-template-columns:1fr;}
  .body-layout{grid-template-columns:1fr;}
  .toc{display:none;}
  .cta-inner{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .brand{font-size:16px;}
  .brand-mark{width:34px;height:34px;flex:0 0 34px;}
  .page-hero{padding:24px 0 44px;}
  .point-grid{grid-template-columns:1fr;}
  .num-grid{grid-template-columns:1fr;}
  .timeline-item{padding-left:56px;}
  .timeline-dot{width:36px;height:36px;}
  .timeline::before{left:17px;}
  .faq-q{font-size:16px;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:575px){
  :root{--sec-space:48px;}
  .header-inner{min-height:64px;}
  .page-hero-media img{height:200px;}
  .media-figure img{height:220px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category2 */
:root{
  --ink-900:#16202A;
  --ink-600:#5A6B78;
  --ink-300:#9AA8B2;
  --line:#E3E8ED;
  --brand-700:#0E5B75;
  --brand-600:#12718F;
  --brand-50:#EDF5F8;
  --accent-500:#E07A32;
  --accent-50:#FDF2E9;
  --ok:#2E9E7B;
  --bg:#F6F8FA;
  --card:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(22,32,42,.05);
  --shadow-2:0 8px 20px rgba(22,32,42,.07);
  --shadow-3:0 16px 36px rgba(22,32,42,.10);
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--bg);
  letter-spacing:0;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-600);text-decoration:underline;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent-500);
  outline-offset:2px;
}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:600;color:var(--ink-900);}
p{margin:0;max-width:760px;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
@media(max-width:991px){.container{padding:0 32px;}}
@media(max-width:575px){.container{padding:0 20px;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--brand-50);color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.brand strong{font-size:18px;font-weight:600;color:var(--ink-900);letter-spacing:0;white-space:nowrap;}
.brand:hover{text-decoration:none;}
.brand:hover strong{color:var(--brand-700);}
.nav-wrap{margin-left:8px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  display:inline-flex;align-items:center;
  min-height:44px;padding:0 14px;
  font-size:15px;color:var(--ink-600);
  border-bottom:2px solid transparent;
  transition:color var(--ease),border-color var(--ease);
}
.nav-link:hover{color:var(--brand-700);text-decoration:none;}
.nav-link.active{color:var(--brand-700);font-weight:600;border-bottom-color:var(--brand-700);}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;
  width:240px;height:42px;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;padding:0 12px;gap:8px;
  box-shadow:var(--shadow-1);
}
.search-box svg{flex-shrink:0;color:var(--ink-300);}
.search-box input{
  border:0;outline:0;background:transparent;
  width:100%;font-size:14px;color:var(--ink-900);
  font-family:inherit;
}
.search-box input::placeholder{color:var(--ink-300);}
.search-box:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 1px var(--brand-600);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;font-family:inherit;
  cursor:pointer;transition:all var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-600);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);text-decoration:none;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-700);font-weight:600;font-size:15px;min-height:44px;
}
.btn-link-arrow span.arrow{transition:transform var(--ease);display:inline-block;}
.btn-link-arrow:hover{text-decoration:none;color:var(--brand-600);}
.btn-link-arrow:hover span.arrow{transform:translateX(2px);}
.hamburger{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  border-radius:var(--r-btn);background:#fff;color:var(--ink-900);
  align-items:center;justify-content:center;cursor:pointer;
}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff;}
.mobile-panel.open{display:block;}
.mobile-panel ul{display:flex;flex-direction:column;}
.mobile-panel a{
  display:flex;align-items:center;min-height:52px;
  padding:0 20px;font-size:15px;color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.mobile-panel a.active{color:var(--brand-700);font-weight:600;}
.mobile-panel .panel-cta{padding:16px 20px;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  background:var(--brand-700);
  color:#fff;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.30;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,91,117,.94) 0%,rgba(14,91,117,.80) 55%,rgba(18,113,143,.62) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.hero-flow{padding:56px 0 60px;max-width:820px;}
.breadcrumb-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.78);
  padding:22px 0 0;
}
.breadcrumb-bar a{color:rgba(255,255,255,.86);}
.breadcrumb-bar a:hover{color:#fff;}
.breadcrumb-bar .sep{color:rgba(255,255,255,.45);}
.breadcrumb-bar .current{color:rgba(255,255,255,.72);}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.22);
  border-radius:999px;padding:5px 14px;
  font-size:13px;color:#fff;margin-bottom:20px;
}
.page-hero h1{
  color:#fff;
  font-size:clamp(28px,3.2vw,42px);
  margin-bottom:16px;
}
.page-hero .hero-sub{
  color:rgba(255,255,255,.88);
  font-size:17px;max-width:720px;line-height:1.8;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 28px;
  margin-top:26px;font-size:14px;color:rgba(255,255,255,.80);
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.hero-meta i{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent-500);display:inline-block;
}

/* ---------- Section base ---------- */
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:820px;margin-bottom:44px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand-700);
  background:var(--brand-50);border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.section-head h2{font-size:clamp(22px,2.2vw,30px);position:relative;padding-bottom:14px;margin-bottom:16px;}
.section-head h2::after{
  content:"";position:absolute;left:0;bottom:0;
  width:28px;height:3px;background:var(--brand-700);border-radius:2px;
}
.section-head p{color:var(--ink-600);}

/* ---------- Module grid ---------- */
.module-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-2);
  overflow:hidden;
}
.module-card{
  padding:32px 30px;
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
  transition:background var(--ease),transform var(--ease);
}
.module-card:nth-child(2n){border-right:0;}
.module-card:nth-last-child(-n+2){border-bottom:0;}
.module-card:hover{background:var(--brand-50);}
.module-top{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.module-icon{
  width:44px;height:44px;border-radius:10px;
  background:var(--brand-50);color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;
  flex-shrink:0;transition:background var(--ease),color var(--ease);
}
.module-card:hover .module-icon{background:var(--brand-700);color:#fff;}
.module-num{
  margin-left:auto;font-size:13px;font-weight:600;
  color:var(--ink-300);font-variant-numeric:tabular-nums;
}
.module-card h3{font-size:19px;margin-bottom:10px;}
.module-card p{color:var(--ink-600);font-size:15px;line-height:1.8;}
.module-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  display:inline-block;font-size:12.5px;
  padding:4px 10px;border-radius:10px;
  background:var(--brand-50);color:var(--brand-700);
}
.tag.warm{background:var(--accent-50);color:var(--accent-500);}

/* ---------- Security rows ---------- */
.sec-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:32px;
  align-items:start;
}
.sec-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-2);
  padding:28px;transition:transform var(--ease),box-shadow var(--ease);
}
.sec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.sec-card h3{font-size:18px;margin-bottom:12px;}
.sec-card p{color:var(--ink-600);font-size:15px;}
.check-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;color:var(--ink-600);
}
.check-list li svg{flex-shrink:0;margin-top:6px;color:var(--ok);}
.compare-media{
  border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-2);
  margin-bottom:26px;
}
.compare-media img{
  width:100%;height:240px;object-fit:cover;
  transition:transform var(--ease);
}
.compare-media:hover img{transform:scale(1.02);}

/* ---------- Stats strip ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-1);
}
.stat-item{
  padding:26px 24px;border-right:1px solid var(--line);
}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-size:30px;font-weight:600;color:var(--accent-500);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-label{font-size:13px;color:var(--ink-600);margin-top:6px;}
.stat-note{font-size:12.5px;color:var(--ink-300);margin-top:4px;}

/* ---------- Steps ---------- */
.step-row{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.step-card{
  position:relative;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-2);padding:28px 24px;
  transition:transform var(--ease),box-shadow var(--ease);
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.step-idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:8px;
  background:var(--accent-50);color:var(--accent-500);
  font-weight:600;font-size:15px;font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step-card h3{font-size:17px;margin-bottom:10px;}
.step-card p{font-size:15px;color:var(--ink-600);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:780px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;background:transparent;border:0;padding:22px 0;
  display:flex;align-items:center;gap:14px;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink-900);
  font-family:inherit;cursor:pointer;min-height:44px;
  transition:color var(--ease);
}
.faq-q::before{
  content:"";width:3px;height:0;
  background:var(--brand-700);border-radius:2px;
  transition:height var(--ease);flex-shrink:0;
}
.faq-item.open .faq-q::before{height:22px;}
.faq-item.open .faq-q{color:var(--brand-700);}
.faq-q .sign{
  margin-left:auto;color:var(--ink-300);
  font-size:20px;line-height:1;transition:transform var(--ease),color var(--ease);
}
.faq-item.open .faq-q .sign{transform:rotate(45deg);color:var(--brand-700);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 260ms ease;
}
.faq-a p{
  padding:0 0 22px 17px;
  font-size:15px;color:var(--ink-600);
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-50);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-inner{
  display:flex;align-items:center;gap:32px;
  padding:48px 0;flex-wrap:wrap;
}
.cta-text{flex:1 1 420px;min-width:260px;}
.cta-text h2{font-size:clamp(20px,2vw,26px);margin-bottom:10px;}
.cta-text p{color:var(--ink-600);font-size:15px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- Aside anchor nav ---------- */
.anchor-nav{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);
  padding:20px;
}
.anchor-nav h4{font-size:14px;color:var(--ink-600);margin-bottom:12px;font-weight:600;}
.anchor-nav a{
  display:flex;align-items:center;min-height:40px;
  font-size:14px;color:var(--ink-600);
  border-left:2px solid transparent;padding-left:12px;
  transition:all var(--ease);
}
.anchor-nav a:hover{color:var(--brand-700);border-left-color:var(--brand-700);text-decoration:none;background:var(--brand-50);}
.aside-grid{
  display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:36px;align-items:start;
}

/* ---------- Footer ---------- */
.site-footer{
  background:#fff;border-top:1px solid var(--line);
  padding:64px 0 0;margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:17px;font-weight:600;}
.site-footer p{font-size:14px;color:var(--ink-600);max-width:360px;line-height:1.8;}
.footer-col h4{font-size:15px;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-600);min-height:32px;display:inline-flex;align-items:center;}
.footer-col a:hover{color:var(--brand-700);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:10px 24px;
  justify-content:space-between;font-size:13px;color:var(--ink-300);
}

/* ---------- Responsive ---------- */
@media(max-width:1100px){
  .search-box{width:180px;}
  .nav-link{padding:0 10px;font-size:14.5px;}
}
@media(max-width:991px){
  .nav-wrap,.search-box{display:none;}
  .hamburger{display:inline-flex;}
  .header-tools{gap:10px;}
  .section{padding:64px 0;}
  .section-sm{padding:48px 0;}
  .module-grid{grid-template-columns:1fr;}
  .module-card{border-right:0!important;}
  .module-card:nth-last-child(-n+2){border-bottom:1px solid var(--line);}
  .module-card:last-child{border-bottom:0;}
  .sec-layout{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-item:nth-child(2n){border-right:0;}
  .stat-item:nth-child(-n+2){border-bottom:1px solid var(--line);}
  .step-row{grid-template-columns:1fr;}
  .aside-grid{grid-template-columns:1fr;}
  .anchor-nav{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media(max-width:575px){
  body{font-size:15.5px;}
  .brand strong{font-size:16px;}
  .hero-flow{padding:36px 0 44px;}
  .section{padding:48px 0;}
  .module-card{padding:24px 20px;}
  .stat-item{padding:20px;}
  .stat-num{font-size:26px;}
  .cta-inner{padding:36px 0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category3 */
:root{
  --ink-900:#16202A;
  --ink-600:#5A6B78;
  --ink-300:#9AA8B2;
  --line:#E3E8ED;
  --brand-700:#0E5B75;
  --brand-600:#12718F;
  --brand-50:#EDF5F8;
  --accent-500:#E07A32;
  --accent-50:#FDF2E9;
  --ok:#2E9E7B;
  --bg:#F6F8FA;
  --card:#FFFFFF;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(22,32,42,.05);
  --shadow-2:0 8px 20px rgba(22,32,42,.07);
  --shadow-3:0 16px 36px rgba(22,32,42,.10);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--bg);
  letter-spacing:0;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--brand-600);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent-500);
  outline-offset:2px;
}
h1,h2,h3,h4{line-height:1.3;margin:0;font-weight:600;color:var(--ink-900);}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px;}}
@media (min-width:992px){.container{padding-left:40px;padding-right:40px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:10px 24px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-700);font-weight:600;font-size:15px;
  min-height:44px;
}
.btn-link-arrow .arrow{transition:transform .18s ease;display:inline-block;}
.btn-link-arrow:hover .arrow{transform:translateX(2px);}

/* ---------- 徽章 / 标签 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-700);
  font-size:12.5px;font-weight:600;line-height:1.6;
}
.badge-warm{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:999px;
  background:var(--accent-50);color:var(--accent-500);
  font-size:12.5px;font-weight:600;line-height:1.6;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:70px;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:600;color:var(--ink-900);
  flex-shrink:0;
}
.brand:hover{color:var(--brand-700);}
.brand-mark{
  width:34px;height:34px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-50);color:var(--brand-700);
  flex-shrink:0;
}
.nav-links{display:flex;align-items:center;gap:4px;flex:1;}
.nav-link{
  display:inline-block;
  padding:8px 12px;margin:0 2px;
  font-size:15px;color:var(--ink-600);
  border-bottom:2px solid transparent;
  min-height:44px;line-height:28px;
}
.nav-link:hover{color:var(--brand-700);background:var(--brand-50);border-radius:8px;}
.nav-link.active{color:var(--brand-700);font-weight:600;border-bottom-color:var(--brand-700);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{position:relative;max-width:240px;width:220px;}
.search-box input{
  width:100%;height:44px;
  padding:0 14px 0 38px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;color:var(--ink-900);
  font-size:14px;
  box-shadow:var(--shadow-1);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-box input::placeholder{color:var(--ink-300);}
.search-box input:focus{
  outline:none;border-color:var(--brand-600);
  box-shadow:0 0 0 2px rgba(18,113,143,.18);
}
.search-box .search-icon{
  position:absolute;left:13px;top:50%;transform:translateY(-50%);
  color:var(--ink-300);pointer-events:none;
}
.menu-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;background:#fff;
  color:var(--ink-900);cursor:pointer;
}
.menu-toggle:hover{border-color:var(--brand-600);color:var(--brand-700);}

@media (max-width:1100px){
  .search-box{width:170px;}
}
@media (max-width:991px){
  .header-inner{flex-wrap:wrap;min-height:64px;padding-top:10px;padding-bottom:10px;}
  .menu-toggle{display:inline-flex;}
  .search-box{display:none;}
  .header-actions .btn{display:none;}
  .nav-links{
    display:none;
    width:100%;flex-direction:column;align-items:stretch;
    gap:0;margin:8px 0 4px;
    border-top:1px solid var(--line);
  }
  .nav-links.is-open{display:flex;}
  .nav-link{
    display:block;padding:14px 4px;margin:0;
    border-bottom:1px solid var(--line);
    border-left:none;border-radius:0;
    font-size:16px;
  }
  .nav-link:hover{background:var(--brand-50);border-radius:0;}
  .nav-link.active{border-bottom-color:var(--line);background:var(--brand-50);}
  .mobile-cta{display:block;margin:16px 0 8px;}
}
@media (min-width:992px){.mobile-cta{display:none;}}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.breadcrumb-list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:14px 0;font-size:13px;color:var(--ink-300);
}
.breadcrumb-list li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb-list li+li::before{content:"";width:1px;height:12px;background:var(--line);display:inline-block;}
.breadcrumb-list a{color:var(--brand-700);}
.breadcrumb-list .current{color:var(--ink-600);}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(100deg,rgba(246,248,250,.95) 0%,rgba(237,245,248,.90) 55%,rgba(237,245,248,.72) 100%),url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero-inner{
  padding:64px 0 60px;
  max-width:820px;
}
.page-hero h1{
  font-size:clamp(28px,3.2vw,42px);
  font-weight:600;
  margin:16px 0 14px;
}
.page-hero .hero-note{
  font-size:16px;color:var(--ink-600);
  max-width:600px;margin:0;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;
}
.hero-meta span{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--ink-600);
  background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:6px 14px;
  box-shadow:var(--shadow-1);
}
@media (max-width:767px){
  .page-hero-inner{padding:48px 0 44px;}
}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(22px,2.2vw,30px);
  position:relative;padding-bottom:14px;
}
.section-head h2::after{
  content:"";position:absolute;left:0;bottom:0;
  width:28px;height:3px;background:var(--brand-700);border-radius:2px;
}
.section-head p{margin-top:16px;color:var(--ink-600);}
@media (max-width:991px){.section{padding:64px 0;} .section-head{margin-bottom:32px;}}
@media (max-width:575px){.section{padding:48px 0;}}

/* ---------- 分栏问答布局 ---------- */
.qa-layout{
  display:grid;
  grid-template-columns:320px 1fr;
  gap:40px;
  align-items:start;
}
.qa-index{
  position:sticky;
  top:96px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  padding:22px 20px;
}
.qa-index h3{font-size:17px;margin-bottom:6px;}
.qa-index .index-hint{font-size:13px;color:var(--ink-300);margin:0 0 14px;}
.qa-index ol{display:flex;flex-direction:column;}
.qa-index li+li{border-top:1px solid var(--line);}
.qa-index a{
  display:flex;align-items:flex-start;gap:10px;
  padding:12px 8px;
  font-size:14.5px;color:var(--ink-600);
  border-left:3px solid transparent;
  border-radius:6px;
  min-height:44px;
}
.qa-index a:hover{color:var(--brand-700);background:var(--brand-50);border-left-color:var(--brand-700);}
.qa-index .idx{
  flex-shrink:0;
  font-size:12.5px;font-weight:700;
  color:var(--brand-700);
  font-variant-numeric:tabular-nums;
  padding-top:2px;
}
.qa-index .index-foot{
  margin-top:16px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-300);
}
.qa-index .index-foot a{color:var(--brand-700);font-weight:600;}

.answer-list{display:flex;flex-direction:column;gap:24px;}
.answer-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  padding:26px 26px 24px;
  scroll-margin-top:100px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.answer-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.answer-card:target{border-color:var(--brand-600);box-shadow:var(--shadow-3);}
.answer-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px;}
.answer-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:var(--brand-50);color:var(--brand-700);
  font-weight:700;font-size:14px;
  font-variant-numeric:tabular-nums;
  flex-shrink:0;
}
.answer-card h3{font-size:18px;margin:0;}
.answer-block{margin-top:18px;padding-top:18px;border-top:1px solid var(--line);}
.answer-block:first-of-type{border-top:none;padding-top:14px;}
.answer-block .label{
  display:inline-block;
  font-size:13px;font-weight:600;
  color:var(--brand-700);
  background:var(--brand-50);
  border-radius:6px;
  padding:2px 10px;
  margin-bottom:10px;
}
.answer-block .label.warm{background:var(--accent-50);color:var(--accent-500);}
.answer-block p{font-size:15.5px;color:var(--ink-600);}
.answer-block ul{display:flex;flex-direction:column;gap:10px;margin-top:6px;}
.answer-block ul li{
  position:relative;
  padding-left:20px;
  font-size:15.5px;color:var(--ink-600);line-height:1.8;
}
.answer-block ul li::before{
  content:"";position:absolute;left:0;top:11px;
  width:7px;height:7px;border-radius:2px;
  background:var(--brand-600);opacity:.65;
}
.answer-tip{
  display:flex;gap:12px;
  margin-top:18px;padding:14px 16px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:12px;
}
.answer-tip .tip-icon{color:var(--accent-500);flex-shrink:0;margin-top:3px;}
.answer-tip p{font-size:14px;color:var(--ink-600);margin:0;}
@media (max-width:991px){
  .qa-layout{grid-template-columns:1fr;gap:28px;}
  .qa-index{position:static;}
}

/* ---------- 支持渠道 ---------- */
.support-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-bottom:32px;
}
.support-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  padding:24px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.support-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.support-card .sc-icon{
  width:42px;height:42px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-50);color:var(--brand-700);
  margin-bottom:16px;
}
.support-card h3{font-size:17px;margin-bottom:8px;}
.support-card p{font-size:14.5px;color:var(--ink-600);margin-bottom:14px;}
.support-card .meta{
  font-size:13px;color:var(--ink-300);
  padding-top:12px;border-top:1px solid var(--line);
}
.support-figure{
  display:grid;grid-template-columns:1fr 1fr;
  gap:32px;align-items:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  overflow:hidden;
}
.support-figure img{
  width:100%;height:100%;min-height:260px;
  object-fit:cover;
  transition:transform .3s ease;
}
.support-figure .fig-media{overflow:hidden;height:100%;}
.support-figure .fig-media:hover img{transform:scale(1.02);}
.support-figure .fig-body{padding:32px 32px 32px 0;}
.support-figure .fig-body h3{font-size:20px;margin-bottom:14px;}
.support-figure .fig-body p{font-size:15px;color:var(--ink-600);}
.support-figure .fig-body ul{display:flex;flex-direction:column;gap:10px;margin-top:16px;}
.support-figure .fig-body li{
  position:relative;padding-left:22px;font-size:14.5px;color:var(--ink-600);
}
.support-figure .fig-body li::before{
  content:"";position:absolute;left:0;top:10px;
  width:8px;height:8px;border-radius:50%;
  background:var(--accent-500);opacity:.8;
}
@media (max-width:991px){
  .support-grid{grid-template-columns:1fr 1fr;}
  .support-figure{grid-template-columns:1fr;}
  .support-figure .fig-body{padding:0 24px 28px;}
  .support-figure img{min-height:200px;}
}
@media (max-width:575px){
  .support-grid{grid-template-columns:1fr;}
}

/* ---------- FAQ 手风琴 ---------- */
.faq-list{max-width:780px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px 20px 0;
  background:none;border:none;
  text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--ink-900);
  border-left:3px solid transparent;
  padding-left:0;
  transition:color .18s ease,border-color .18s ease,padding-left .18s ease;
  min-height:44px;
}
.faq-q:hover{color:var(--brand-700);}
.faq-q[aria-expanded="true"]{
  color:var(--brand-700);
  border-left-color:var(--brand-700);
  padding-left:14px;
}
.faq-icon{
  flex-shrink:0;width:22px;height:22px;position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-700);
  border-radius:2px;transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{left:3px;top:10px;width:16px;height:2px;}
.faq-icon::after{left:10px;top:3px;width:2px;height:16px;}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease;
}
.faq-a-inner{padding:0 0 22px;font-size:15px;color:var(--ink-600);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-50);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:56px 0;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(20px,2vw,26px);margin-bottom:10px;}
.cta-inner p{font-size:15px;color:var(--ink-600);max-width:620px;margin:0;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#F0F3F6;
  border-top:1px solid var(--line);
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-size:17px;color:var(--ink-900);
  margin-bottom:16px;
}
.footer-brand .brand-mark{width:30px;height:30px;border-radius:8px;}
.site-footer p{font-size:14px;color:var(--ink-600);max-width:360px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink-900);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-600);}
.footer-col a:hover{color:var(--brand-700);text-decoration:underline;}
.footer-col p{font-size:13.5px;color:var(--ink-300);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-300);
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;}
}