/* roulang page: index */
:root{
  --brand:#1B5FA8;
  --brand-deep:#1A5495;
  --brand-soft:#2E76C4;
  --brand-tint:#E8F1FA;
  --brand-panel:#F0F5FB;
  --accent:#E9603C;
  --ink:#0F1B2A;
  --body:#4A5A6B;
  --muted:#7C8B9B;
  --line:#E4EBF2;
  --card-line:#E8EEF5;
  --page:#F7F9FC;
  --white:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:18px;
  --sh-1:0 1px 2px rgba(16,42,72,.04), 0 8px 24px -12px rgba(16,42,72,.10);
  --sh-2:0 14px 32px -14px rgba(16,42,72,.18);
  --sh-3:0 32px 64px -24px rgba(16,42,72,.30);
  --t:200ms ease;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--page);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--brand-deep)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4{color:var(--ink);font-weight:700;margin:0}
h1{font-size:clamp(30px,4vw,46px);line-height:1.25;letter-spacing:-.01em}
h2{font-size:clamp(26px,2.6vw,32px);line-height:1.35;letter-spacing:-.005em}
h3{font-size:20px;line-height:1.5;font-weight:600}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.container-wide{width:100%;max-width:1280px;margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:80px 0}
.section-tight{padding:64px 0}
.section-head{margin-bottom:40px}
.section-head h2{margin-bottom:12px}
.section-sub{font-size:16px;color:var(--muted);max-width:680px;margin:0}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;color:var(--brand);
  background:var(--brand-tint);border-radius:999px;padding:4px 12px;margin-bottom:16px;line-height:1.6;
}
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--brand-tint);color:var(--brand);font-size:12px;font-weight:600;white-space:nowrap;
}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:1030;background:var(--white);
  border-bottom:1px solid var(--line);
}
.nav-wrap{position:relative;display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:18px;letter-spacing:.2px}
.brand:hover{color:var(--ink)}
.brand-mark{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;color:var(--brand)}
.nav-toggle{
  width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:var(--white);
  color:var(--ink);display:inline-flex;align-items:center;justify-content:center;transition:border-color var(--t),color var(--t);
}
.nav-toggle:hover{border-color:var(--brand-soft);color:var(--brand)}
.nav-panel{display:flex;align-items:center;gap:32px}
.main-nav{display:flex;align-items:center;gap:32px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--body);padding:2px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--brand);
  border-radius:2px;transition:width var(--t);
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{width:60%}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{width:60%}
.nav-ico{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:var(--white);
  color:var(--muted);display:inline-flex;align-items:center;justify-content:center;
  transition:color var(--t),border-color var(--t);
}
.nav-ico:hover{color:var(--brand);border-color:var(--brand-soft)}
@media (min-width:992px){
  .nav-panel{display:flex !important}
}
@media (max-width:991.98px){
  .nav-panel{
    position:absolute;left:0;right:0;top:68px;background:var(--white);
    border-bottom:1px solid var(--line);box-shadow:var(--sh-1);
    padding:4px 24px 20px;flex-direction:column;align-items:stretch;gap:0;
  }
  .main-nav{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{height:52px;display:flex;align-items:center;border-bottom:1px solid var(--line);font-size:15px}
  .nav-link::after{display:none}
  .nav-link.active{font-weight:600}
  .nav-ico{margin-top:16px;align-self:flex-start}
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;border-radius:var(--r-btn);padding:12px 24px;
  border:1px solid transparent;line-height:1.5;transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-brand{background:var(--brand);color:var(--white);box-shadow:var(--sh-1)}
.btn-brand:hover{background:var(--brand-deep);color:var(--white);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-brand:active{transform:translateY(0)}
.btn-ghost{background:var(--white);color:var(--brand);border-color:#C8DDF2}
.btn-ghost:hover{background:var(--brand-tint);color:var(--brand-deep);border-color:var(--brand-soft);transform:translateY(-1px)}
.btn-block{width:100%}
.arrow-link{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--brand)}
.arrow-link .arw{transition:transform var(--t);line-height:1}
.arrow-link:hover .arw{transform:translateX(4px)}
.dot-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand)}
.dot-link::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.dot-link:hover::before{background:var(--accent)}

/* Hero */
.hero{background:var(--white);border-bottom:1px solid var(--line);padding:72px 0 64px}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero h1{margin-bottom:18px}
.hero-lead{font-size:17px;color:var(--body);margin-bottom:28px;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-img{
  width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--sh-2);
}
.trust-row{display:flex;flex-wrap:wrap;align-items:center;margin-top:30px;padding-top:0}
.trust-row span{font-size:13px;color:var(--muted);padding-right:18px}
.trust-row span + span{border-left:1px solid var(--line);padding-left:18px}
.hero-placeholder{
  width:100%;aspect-ratio:3/2;border-radius:var(--r-img);background:#EDF2F8;
  display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px;
}
@media (max-width:991.98px){
  .hero{padding:52px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
}
@media (max-width:767.98px){
  .hero-img{aspect-ratio:16/9}
  .hero-actions .btn{width:100%}
}

/* 痛点提问区 */
.pain{background:var(--white)}
.pain h2{margin-bottom:14px}
.q-list{list-style:none;margin:0;padding:0}
.q-list li{
  display:flex;gap:14px;align-items:flex-start;padding:22px 0;border-bottom:1px solid var(--line);
  font-size:18px;line-height:1.7;color:var(--ink);
}
.q-list li:first-child{border-top:1px solid var(--line)}
.q-mark{flex:0 0 20px;width:20px;height:20px;color:var(--brand);margin-top:6px}

/* 方案卡片 */
.sol{background:var(--page)}
.card{
  position:relative;background:var(--white);border:1px solid var(--card-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t);overflow:hidden;
}
.card::before{
  content:"";position:absolute;left:24px;top:-1px;width:0;height:2px;background:var(--brand);
  border-radius:2px;transition:width var(--t);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.card:hover::before{width:24px}
.card-feature{padding:32px;height:100%;display:grid;grid-template-columns:1fr 200px;gap:28px;align-items:center}
.card-feature .ico{width:24px;height:24px;color:var(--brand);margin-bottom:18px;display:block}
.card-feature h3{margin-bottom:12px}
.card-feature p{margin-bottom:18px;font-size:15.5px}
.card-feature img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card)}
.card-stack{display:grid;grid-template-rows:1fr 1fr;gap:24px;height:100%}
.card-mini{padding:26px;display:flex;flex-direction:column;justify-content:center}
.card-mini .ico{width:22px;height:22px;color:var(--brand);margin-bottom:14px;display:block}
.card-mini h3{font-size:18px;margin-bottom:10px}
.card-mini p{font-size:15px;margin-bottom:16px}
@media (max-width:991.98px){
  .card-feature{grid-template-columns:1fr;gap:20px}
  .card-feature img{aspect-ratio:16/9}
}

/* 数据区 */
.stats-panel{
  background:var(--brand-panel);border-radius:20px;padding:48px 40px;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:0 24px;text-align:left}
.stat + .stat{border-left:1px solid #D8E4F1}
.stat:first-child{padding-left:0}
.stat-num{
  font-size:clamp(36px,4vw,48px);line-height:1.1;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat-label{font-size:13px;color:var(--muted);margin-top:8px}
.stats-note{font-size:13px;color:var(--muted);margin:28px 0 0;padding-top:20px;border-top:1px solid #D8E4F1}
@media (max-width:991.98px){
  .stats-panel{padding:36px 24px}
  .stats-grid{grid-template-columns:1fr 1fr;gap:28px 0}
  .stat{padding:0 18px}
  .stat:nth-child(odd){padding-left:0;border-left:0}
  .stat:nth-child(3){border-left:0}
}
@media (max-width:575.98px){
  .stats-grid{grid-template-columns:1fr;gap:24px 0}
  .stat{padding:0;border-left:0 !important}
}

/* 图文自查区 */
.check{background:var(--white)}
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.check-grid img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1)}
.check-list{list-style:none;margin:0;padding:0}
.check-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);font-size:15.5px;line-height:1.8;
}
.check-list li:first-child{border-top:1px solid var(--line)}
.check-list .num{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--brand-tint);color:var(--brand);
  font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;margin-top:5px;
}
@media (max-width:991.98px){
  .check-grid{grid-template-columns:1fr;gap:32px}
}

/* 资讯列表 */
.news{background:var(--page)}
.list-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:20px}
.list-head h2{margin:0}
.news-list{border-top:1px solid var(--line)}
.news-row{
  display:grid;grid-template-columns:100px 1fr 150px;gap:24px;align-items:start;
  padding:24px 0;border-bottom:1px solid var(--line);
}
.news-date{font-size:13px;color:var(--muted);padding-top:4px}
.news-title{font-size:18px;font-weight:600;line-height:1.55;margin:0 0 8px}
.news-title a{color:var(--ink);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.news-title a:hover{color:var(--brand)}
.news-sum{
  font-size:15px;line-height:1.8;color:var(--body);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-side{display:flex;align-items:center;justify-content:flex-end;gap:16px;padding-top:4px}
.empty-note{
  border:1px dashed #C9D9E8;border-radius:var(--r-card);padding:32px 24px;text-align:center;
  font-size:14px;color:var(--muted);background:var(--white);
}
@media (max-width:991.98px){
  .news-row:nth-child(n+4){display:none}
}
@media (max-width:767.98px){
  .news-row{grid-template-columns:1fr;gap:10px;padding:20px 0}
  .news-date{order:3;padding-top:0}
  .news-side{order:2;justify-content:flex-start;padding-top:0}
  .news-title a{white-space:normal}
}

/* FAQ */
.faq{background:var(--white)}
.faq-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq-acc .accordion-item:first-child{border-top:1px solid var(--line)}
.faq-acc .accordion-button{
  background:transparent;box-shadow:none;border-radius:0;
  padding:18px 0 18px 14px;border-left:3px solid transparent;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color var(--t),border-color var(--t);
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);border-left-color:var(--brand)}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:2px}
.faq-acc .accordion-button::after{
  content:"+";background-image:none;width:auto;height:auto;margin-left:auto;
  font-size:20px;font-weight:400;color:var(--muted);line-height:1;transform:none;
  display:inline-flex;align-items:center;justify-content:center;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"–";color:var(--brand);transform:none}
.faq-acc .accordion-body{padding:0 0 18px 14px;font-size:15px;line-height:1.85;color:var(--body)}
@media (max-width:991.98px){
  .faq-grid{grid-template-columns:1fr;gap:28px}
}

/* CTA 横条 */
.cta-band{
  background:var(--brand-tint);border-radius:16px;padding:32px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h3{margin-bottom:8px}
.cta-band p{font-size:15px;color:var(--body);margin:0}
.cta-privacy{font-size:13px;color:var(--muted);margin:14px 0 0}
@media (max-width:767.98px){
  .cta-band{flex-direction:column;align-items:flex-start;padding:24px}
  .cta-band .btn{width:100%}
}

/* 表单弹层 */
.modal-content{border:0;border-radius:16px;box-shadow:var(--sh-3);overflow:hidden}
.modal-header{border-bottom:1px solid var(--line);padding:22px 26px}
.modal-title{font-size:20px;font-weight:700;color:var(--ink)}
.modal-body{padding:24px 26px 28px}
.modal .btn-close{opacity:.5;transition:opacity var(--t)}
.modal .btn-close:hover{opacity:1}
.form-label{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.form-control{
  border:1px solid var(--line);border-radius:var(--r-btn);padding:11px 14px;
  font-size:15px;color:var(--ink);background:var(--white);transition:border-color var(--t),box-shadow var(--t);
}
.form-control:focus{border-color:var(--brand-soft);box-shadow:0 0 0 3px rgba(46,118,196,.14)}
.form-control::placeholder{color:#A9B6C3}
.form-check-input{border-color:#C9D9E8;margin-top:.35em}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand)}
.form-check-input:focus{border-color:var(--brand-soft);box-shadow:0 0 0 3px rgba(46,118,196,.14)}
.form-check-label{font-size:13px;color:var(--body);line-height:1.7}
.form-tip{font-size:13px;color:var(--muted);line-height:1.75;margin:14px 0 0}
.form-ok{
  display:none;background:var(--brand-tint);color:var(--brand);border-radius:var(--r-btn);
  padding:12px 16px;font-size:14px;margin-top:16px;
}
@media (max-width:575.98px){
  .modal-dialog{margin:12px}
}

/* 页脚 */
.site-footer{background:var(--ink);color:#AEBDCC;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#FFFFFF;font-weight:700;font-size:17px;margin-bottom:16px}
.footer-brand .brand-mark{color:#6FA9E0}
.site-footer h4{color:#FFFFFF;font-size:15px;font-weight:600;margin:0 0 18px}
.site-footer p{font-size:14px;line-height:1.85;color:#AEBDCC;margin:0 0 12px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:12px}
.footer-links a{color:#AEBDCC;font-size:14px}
.footer-links a:hover{color:#FFFFFF}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.10);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:#7E8FA1;
}
.footer-bottom .domain{color:#6B7B8C}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{padding:48px 0 0}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
  .btn:hover,.card:hover{transform:none !important}
}

/* roulang page: article */
:root{
  --brand:#1B5FA8;
  --brand-light:#2E76C4;
  --brand-tint:#E8F1FA;
  --brand-tint-2:#F0F5FB;
  --accent:#E9603C;
  --ink:#0F1B2A;
  --text:#4A5A6B;
  --muted:#7C8B9B;
  --line:#E4EBF2;
  --line-soft:#E8EEF5;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --shadow-1:0 1px 2px rgba(16,42,72,.04);
  --shadow-2:0 8px 24px -12px rgba(16,42,72,.10);
  --shadow-3:0 14px 32px -14px rgba(16,42,72,.18);
  --shadow-4:0 24px 60px -20px rgba(16,42,72,.28);
  --r-card:14px;
  --r-btn:10px;
  --r-img:18px;
  --nav-h:68px;
  --ease:200ms ease;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-light);}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;line-height:1.35;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

/* container */
.container{width:100%;max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;}
.container-wide{max-width:1280px;}

/* header */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-size:17px;font-weight:700;letter-spacing:.2px;}
.brand:hover{color:var(--ink);}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;color:var(--brand);flex:0 0 auto;}
.nav-panel{display:flex;align-items:center;gap:32px;}
.main-nav{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;color:var(--text);font-size:15px;font-weight:500;padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;background:var(--brand);
  transition:width var(--ease);
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{width:60%;}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{width:60%;}
.nav-ico{
  width:36px;height:36px;border:1px solid var(--line);background:#fff;border-radius:10px;
  color:var(--muted);align-items:center;justify-content:center;transition:all var(--ease);
}
.nav-ico:hover{color:var(--brand);border-color:var(--brand-light);background:var(--brand-tint);}
.nav-toggle{
  width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:10px;
  color:var(--ink);display:inline-flex;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--brand-light);color:var(--brand);}

@media (max-width:991.98px){
  .nav-panel{display:block;width:100%;}
  .nav-panel.collapse:not(.show){display:none;}
  .nav-panel .main-nav{flex-direction:column;align-items:stretch;gap:0;padding:6px 0 14px;}
  .nav-panel .nav-link{display:block;line-height:52px;border-bottom:1px solid var(--line);padding:0;}
  .nav-panel .nav-link::after{display:none;}
  .nav-panel .nav-link.active{color:var(--brand);}
  .nav-wrap{flex-wrap:wrap;height:auto;padding-top:14px;padding-bottom:14px;}
}

/* breadcrumb */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:26px 0 0;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C3CFDB;}

/* article head */
.article-head{padding:16px 0 30px;border-bottom:1px solid var(--line);}
.article-head h1{
  font-size:clamp(28px,3.4vw,40px);line-height:1.35;font-weight:700;max-width:820px;margin:14px 0 18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--muted);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C9D5E1;}
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:var(--brand-tint);color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.2px;
}
.author-line{display:inline-flex;align-items:center;gap:6px;color:var(--muted);}
.author-line b{color:var(--ink);font-weight:600;}

/* layout */
.page-main{padding:44px 0 0;}
.layout-row{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;}
@media (min-width:992px){
  .layout-row{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;}
}

/* article body */
.article-body{
  background:var(--card);border:1px solid var(--line-soft);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:38px 40px 44px;font-size:17px;line-height:1.9;
  max-width:820px;
}
.article-body h2{
  font-size:28px;margin:2em 0 .8em;padding-left:16px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;width:3px;height:1.05em;background:var(--brand);border-radius:2px;
}
.article-body h2:first-child{margin-top:0;}
.article-body h3{font-size:20px;font-weight:600;margin:1.7em 0 .6em;}
.article-body p{margin:0 0 1.2em;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.2em;list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.5em;line-height:1.8;}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;background:var(--bg);
  border-left:3px solid var(--brand);border-radius:0 10px 10px 0;color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:1.6em 0 .6em;width:100%;height:auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-body th{color:var(--ink);font-weight:600;background:var(--bg);}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body strong{color:var(--ink);}

/* empty */
.empty-state{
  border:1px dashed #C9D8E6;border-radius:var(--r-card);background:#fff;
  padding:56px 28px;text-align:center;max-width:820px;
}
.empty-state h2{font-size:22px;margin-bottom:12px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px;}

/* sidebar */
.side-col{display:flex;flex-direction:column;gap:24px;}
@media (min-width:992px){
  .side-sticky{position:sticky;top:calc(var(--nav-h) + 24px);}
}
.side-card{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:22px 22px 24px;transition:box-shadow var(--ease),transform var(--ease);
}
.side-card:hover{box-shadow:var(--shadow-2);}
.side-card h3{font-size:15px;font-weight:600;letter-spacing:.4px;color:var(--ink);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:2px;height:14px;background:var(--brand);border-radius:2px;}
.toc-list li{border-bottom:1px solid var(--line);}
.toc-list li:last-child{border-bottom:0;}
.toc-list a{
  display:block;padding:11px 0 11px 12px;font-size:14px;color:var(--text);line-height:1.6;
  border-left:2px solid transparent;transition:all var(--ease);
}
.toc-list a:hover{color:var(--brand);border-left-color:var(--brand-light);padding-left:16px;}
.toc-list a.is-active{color:var(--brand);font-weight:600;border-left-color:var(--brand);}
.side-thumb{border-radius:12px;overflow:hidden;margin-bottom:16px;background:var(--brand-tint-2);}
.side-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.side-links li{border-bottom:1px solid var(--line);}
.side-links li:last-child{border-bottom:0;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 0;font-size:14px;color:var(--text);transition:all var(--ease);
}
.side-links a span.arrow{color:#B6C4D2;transition:transform var(--ease),color var(--ease);}
.side-links a:hover{color:var(--brand);}
.side-links a:hover span.arrow{transform:translateX(4px);color:var(--brand);}
.side-note{font-size:13px;color:var(--muted);line-height:1.8;margin:0;}

/* CTA */
.cta-bar{
  margin:56px 0 0;background:var(--brand-tint-2);border:1px solid #DEEAF6;border-radius:16px;
  padding:32px 36px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
}
.cta-bar h2{font-size:22px;margin-bottom:8px;}
.cta-bar p{margin:0;font-size:14px;color:var(--muted);max-width:520px;}
.privacy-line{font-size:13px;color:var(--muted);margin:16px 0 0;line-height:1.9;}

/* buttons */
.btn{font-weight:600;font-size:15px;border-radius:var(--r-btn);padding:11px 22px;transition:all var(--ease);border:1px solid transparent;}
.btn-brand{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-brand:hover{background:#1A5495;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#BCD5EC;}
.btn-ghost:hover{background:var(--brand-tint);color:var(--brand);transform:translateY(-1px);}
.btn-text{
  background:none;border:0;padding:0;color:var(--brand);font-size:15px;font-weight:600;
  display:inline-flex;align-items:center;gap:8px;
}
.btn-text .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
.btn-text .arrow{transition:transform var(--ease);}
.btn-text:hover{color:#1A5495;}
.btn-text:hover .arrow{transform:translateX(4px);}

/* modal */
.modal-content{border:none;border-radius:16px;box-shadow:var(--shadow-4);}
.modal-header{border-bottom:1px solid var(--line);padding:22px 26px 16px;}
.modal-title{font-size:19px;font-weight:700;color:var(--ink);}
.modal-body{padding:22px 26px 26px;}
.modal-footer{border-top:1px solid var(--line);padding:16px 26px;}
.form-label{font-size:14px;color:var(--ink);font-weight:600;margin-bottom:6px;}
.form-control{
  border:1px solid var(--line);border-radius:10px;padding:11px 14px;font-size:15px;color:var(--ink);
  background:#fff;transition:all var(--ease);
}
.form-control:focus{border-color:var(--brand-light);box-shadow:0 0 0 3px rgba(46,118,196,.14);}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand);}
.form-check-label{font-size:13px;color:var(--muted);}
.btn-close:focus{box-shadow:none;}

/* footer */
.site-footer{background:#0F1B2A;color:#9FB0C2;margin-top:80px;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:16px;}
.footer-brand .brand-mark{color:#5FA0E0;}
.site-footer p{font-size:14px;line-height:1.9;color:#9FB0C2;margin:0 0 8px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.3px;}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:#9FB0C2;font-size:14px;transition:color var(--ease);}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  font-size:13px;color:#8A9AAC;
}
.footer-bottom .domain{color:#66788C;letter-spacing:.4px;}

@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .article-body{padding:26px 22px 30px;font-size:16.5px;}
  .article-body h2{font-size:23px;}
  .cta-bar{padding:24px 22px;}
  .page-main{padding-top:32px;}
  .layout-row{gap:32px;}
}
@media (max-width:575.98px){
  .container{padding-left:18px;padding-right:18px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-bar{flex-direction:column;align-items:flex-start;}
  .cta-bar .btn{width:100%;text-align:center;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  .btn:hover,.side-links a:hover span.arrow{transform:none!important;}
}

/* roulang page: category1 */
:root{
  --brand:#1B5FA8;
  --brand-2:#2E76C4;
  --brand-soft:#E8F1FA;
  --brand-soft-2:#F0F5FB;
  --accent:#E9603C;
  --ink:#0F1B2A;
  --text:#4A5A6B;
  --muted:#7C8B9B;
  --line:#E4EBF2;
  --line-2:#E8EEF5;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-1:0 1px 2px rgba(16,42,72,.04);
  --shadow-2:0 8px 24px -12px rgba(16,42,72,.10);
  --shadow-3:0 14px 32px -14px rgba(16,42,72,.18);
  --shadow-4:0 24px 56px -20px rgba(16,42,72,.26);
  --t:200ms ease;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--t),border-color var(--t)}
a:hover{color:var(--brand-2)}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;letter-spacing:.2px}
p{margin:0 0 1.1em}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}
.container-wide{width:100%;max-width:1280px;padding-left:24px;padding-right:24px;margin:0 auto}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  height:68px;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.nav-wrap{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--ink);font-size:17px;font-weight:700;letter-spacing:.2px;
  white-space:nowrap;
}
.brand:hover{color:var(--brand)}
.brand-mark{display:inline-flex;color:var(--brand);flex:0 0 auto}
.nav-toggle{
  border:1px solid var(--line);background:#fff;color:var(--ink);
  width:40px;height:40px;border-radius:var(--radius-btn);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background var(--t),border-color var(--t);
}
.nav-toggle:hover{background:var(--brand-soft);border-color:var(--brand-soft)}
.nav-panel{align-items:center;gap:28px}
.main-nav{display:flex;align-items:center;gap:32px}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--text);
  padding:6px 0;
  transition:color var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform 220ms ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink);font-weight:600}
.nav-link.active::after{transform:scaleX(.6)}
.nav-ico{
  width:36px;height:36px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--text);align-items:center;justify-content:center;
  transition:color var(--t),border-color var(--t),background var(--t);
}
.nav-ico:hover{color:var(--brand);border-color:var(--brand-soft);background:var(--brand-soft)}

/* ---------- buttons ---------- */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;border:1px solid var(--brand);
  padding:12px 24px;font-size:15px;font-weight:600;
  border-radius:var(--radius-btn);
  transition:background var(--t),transform var(--t),box-shadow var(--t);
  box-shadow:var(--shadow-1);
}
.btn-brand:hover{background:#1A5495;border-color:#1A5495;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--brand);border:1px solid var(--brand-2);
  padding:12px 24px;font-size:15px;font-weight:600;
  border-radius:var(--radius-btn);
  transition:background var(--t),transform var(--t),border-color var(--t);
}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);border-color:var(--brand);transform:translateY(-1px)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
}
.link-arrow span.arrow{transition:transform var(--t)}
.link-arrow:hover span.arrow{transform:translateX(4px)}
.btn-brand:active,.btn-ghost:active{transform:translateY(0)}

/* ---------- badges ---------- */
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;letter-spacing:.2px;
}
.badge-outline{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;border:1px solid var(--line);color:var(--muted);
  font-size:12px;font-weight:500;background:#fff;
}

/* ---------- hero ---------- */
.page-hero{padding:32px 0 64px;background:#fff;border-bottom:1px solid var(--line)}
.crumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:26px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C6D2DE}
.hero-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);margin-bottom:16px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);display:inline-block}
.page-hero h1{
  font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:700;margin-bottom:18px;
}
.hero-sub{font-size:17px;line-height:1.85;color:var(--text);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.trust-row{display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-size:13px;color:var(--muted)}
.trust-row .divider{width:1px;height:14px;background:var(--line);display:inline-block}
.hero-media{
  position:relative;border-radius:18px;overflow:hidden;
  box-shadow:var(--shadow-2);background:var(--brand-soft);
  aspect-ratio:16/9;
}
.hero-media img{width:100%;height:100%;object-fit:cover}

/* ---------- sections ---------- */
.section{padding:72px 0}
.section-tight{padding:0 0 72px}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.6vw,31px);line-height:1.35;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--text);margin:0}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- layout: steps + toc ---------- */
.guide-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;align-items:start}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:8px}
.tl-item{position:relative;padding:0 0 30px 46px}
.tl-item::before{
  content:"";position:absolute;left:11px;top:26px;bottom:-4px;width:1px;background:var(--line);
}
.tl-item:last-child::before{display:none}
.tl-dot{
  position:absolute;left:0;top:2px;
  width:24px;height:24px;border-radius:50%;
  background:var(--brand);color:#fff;font-size:13px;line-height:24px;text-align:center;
  font-weight:600;font-variant-numeric:tabular-nums;
}
.tl-body h3{font-size:20px;line-height:1.5;font-weight:600;margin-bottom:8px}
.tl-body p{font-size:15.5px;line-height:1.8;margin:0 0 .6em;color:var(--text)}
.tl-body p:last-child{margin-bottom:0}
.tl-note{font-size:13px;color:var(--muted)}

/* ---------- toc ---------- */
.toc{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--line-2);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
}
.toc-title{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:14px;letter-spacing:.3px}
.toc-list li+li{border-top:1px solid var(--line)}
.toc-link{
  display:block;padding:11px 0;font-size:14px;color:var(--text);
  transition:color var(--t),padding-left var(--t);
}
.toc-link:hover{color:var(--brand);padding-left:4px}
.toc-link.is-current{color:var(--brand);font-weight:600}
.toc-foot{border-top:1px solid var(--line);margin-top:16px;padding-top:16px}

/* ---------- checklist 4+8 ---------- */
.prep-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:56px;align-items:start}
.prep-side h2{font-size:clamp(23px,2.3vw,29px);line-height:1.35;margin-bottom:14px}
.prep-side p{font-size:15px;color:var(--text);margin-bottom:22px}
.prep-side .prep-img{border-radius:var(--radius-img);overflow:hidden;aspect-ratio:4/3;box-shadow:var(--shadow-2)}
.prep-side .prep-img img{width:100%;height:100%;object-fit:cover}
.check-list{border-top:1px solid var(--line)}
.check-item{
  display:grid;grid-template-columns:26px 1fr;gap:16px;
  padding:20px 0;border-bottom:1px solid var(--line);
}
.check-item .ck{
  width:22px;height:22px;margin-top:4px;color:var(--brand);
}
.check-item h3{font-size:17px;font-weight:600;margin-bottom:6px}
.check-item p{font-size:15px;margin:0;color:var(--text)}

/* ---------- dark band ---------- */
.stat-band{
  background:var(--ink);border-radius:20px;padding:56px 48px;color:#fff;
}
.stat-band .band-head{max-width:640px;margin-bottom:40px}
.stat-band h2{color:#fff;font-size:clamp(22px,2.4vw,28px);line-height:1.4;margin-bottom:12px}
.stat-band .band-head p{color:#A8B6C6;font-size:15px;margin:0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-item{padding:0 28px;border-left:1px solid rgba(255,255,255,.12)}
.stat-item:first-child{border-left:none;padding-left:0}
.stat-num{
  font-size:clamp(34px,4vw,46px);line-height:1.1;font-weight:700;color:#fff;
  font-variant-numeric:tabular-nums;letter-spacing:-.5px;
}
.stat-num em{font-style:normal;color:var(--accent);font-size:20px;margin-left:2px}
.stat-label{font-size:13px;color:#9EADBE;margin-top:10px}
.band-foot{font-size:13px;color:#8797A8;margin-top:34px;border-top:1px solid rgba(255,255,255,.1);padding-top:18px}

/* ---------- pitfalls: asymmetric 2+1 ---------- */
.pit-grid{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:24px;align-items:start}
.card-soft{
  position:relative;background:var(--card);border:1px solid var(--line-2);
  border-radius:var(--radius-card);padding:30px;box-shadow:var(--shadow-2);
  transition:transform var(--t),box-shadow var(--t);
}
.card-soft::before{
  content:"";position:absolute;left:30px;top:-1px;width:2px;height:0;background:var(--brand);
  transition:height var(--t);
}
.card-soft:hover{transform:translateY(-2px);box-shadow:var(--shadow-3)}
.card-soft:hover::before{height:24px}
.card-soft h3{font-size:20px;font-weight:600;margin-bottom:12px}
.card-soft p{font-size:15px;color:var(--text);margin-bottom:16px}
.card-soft .icon{color:var(--brand);margin-bottom:16px}
.pit-stack{display:grid;gap:24px}
.pit-stack .card-soft{padding:24px}
.pit-stack .card-soft h3{font-size:17px}
.pit-stack .card-soft p{font-size:14.5px;margin-bottom:12px}

/* ---------- security strip ---------- */
.safe-strip{
  display:flex;align-items:flex-start;gap:16px;
  background:var(--brand-soft);border-radius:12px;padding:18px 22px;margin:44px 0 0;
}
.safe-strip .safe-ico{color:var(--brand);flex:0 0 auto;margin-top:2px}
.safe-strip p{font-size:14px;line-height:1.8;color:#2C4763;margin:0}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:none;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0 22px 0;font-size:16px;font-weight:600;color:var(--ink);
  position:relative;transition:color var(--t);
}
.faq-q::before{
  content:"";position:absolute;left:-16px;top:26px;bottom:26px;width:3px;
  background:var(--brand);border-radius:2px;opacity:0;transition:opacity var(--t);
}
.faq-q:hover{color:var(--brand)}
.faq-item.open .faq-q{color:var(--brand)}
.faq-item.open .faq-q::before{opacity:1}
.faq-sign{position:relative;width:16px;height:16px;flex:0 0 auto;color:var(--muted);transition:color var(--t)}
.faq-item.open .faq-sign{color:var(--brand)}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:currentColor;border-radius:1px;
  transition:transform var(--t),opacity var(--t);
}
.faq-sign::before{left:0;right:0;top:7.5px;height:1.5px}
.faq-sign::after{top:0;bottom:0;left:7.25px;width:1.5px}
.faq-item.open .faq-sign::after{transform:scaleY(0);opacity:0}
.faq-a{display:none;padding:0 0 22px;max-width:760px}
.faq-item.open .faq-a{display:block}
.faq-a p{font-size:15px;line-height:1.85;color:var(--text);margin:0}

/* ---------- cta ---------- */
.cta-band{
  background:var(--brand-soft-2);border-radius:16px;
  padding:38px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  border:1px solid #DCE8F4;
}
.cta-band h3{font-size:21px;font-weight:700;margin-bottom:8px}
.cta-band p{font-size:14.5px;color:var(--text);margin:0}
.privacy-note{font-size:13px;color:var(--muted);margin-top:18px;line-height:1.8}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#A8B6C6;padding:64px 0 28px;margin-top:80px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:16px}
.footer-brand .brand-mark{color:#5FA3E0}
.site-footer h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;letter-spacing:.3px}
.site-footer p{font-size:14px;line-height:1.85;color:#93A3B5;margin:0 0 10px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:#93A3B5;transition:color var(--t)}
.footer-links a:hover{color:#fff}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:#7E8E9F;
}
.footer-bottom .domain{color:#6C7C8D}

/* ---------- modal ---------- */
.modal-content{border:none;border-radius:16px;box-shadow:var(--shadow-4)}
.modal-header{border-bottom:1px solid var(--line);padding:20px 24px}
.modal-title{font-size:18px;font-weight:700;color:var(--ink)}
.modal-body{padding:24px}
.modal-body p{font-size:14px;color:var(--text)}
.form-label{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:6px}
.form-control{
  border-radius:var(--radius-btn);border:1px solid var(--line);
  padding:11px 14px;font-size:15px;color:var(--ink);background:#fff;
  transition:border-color var(--t),box-shadow var(--t);
}
.form-control:focus{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(46,118,196,.14);outline:none}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand)}
.form-check-label{font-size:13px;color:var(--muted)}
.modal-footer{border-top:1px solid var(--line);padding:16px 24px}
.btn-close{opacity:.5}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .guide-layout{grid-template-columns:1fr;gap:36px}
  .toc{position:static;top:auto}
  .stat-band{padding:44px 32px}
}
@media (max-width:991.98px){
  .nav-panel.collapse:not(.show){display:none}
  .nav-panel{
    position:absolute;left:0;right:0;top:68px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:8px 24px 20px;box-shadow:var(--shadow-2);
    flex-direction:column;align-items:stretch;gap:0;
  }
  .main-nav{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--brand)}
  .nav-ico{display:none}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{aspect-ratio:16/9}
  .prep-grid{grid-template-columns:1fr;gap:32px}
  .pit-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:28px 0}
  .stat-item:nth-child(3){border-left:none;padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start;text-align:left}
  .section{padding:56px 0}
  .section-tight{padding:0 0 56px}
}
@media (max-width:767.98px){
  .page-hero{padding:24px 0 48px}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%}
  .stat-grid{grid-template-columns:1fr;gap:24px}
  .stat-item{border-left:none;padding:0;border-top:1px solid rgba(255,255,255,.12);padding-top:20px}
  .stat-item:first-child{border-top:none;padding-top:0}
  .stat-band{padding:36px 24px;border-radius:16px}
  .faq-q{font-size:15.5px}
}
@media (max-width:575.98px){
  .container,.container-wide{padding-left:18px;padding-right:18px}
  .brand{font-size:16px}
  .footer-grid{grid-template-columns:1fr}
  .cta-band{padding:28px 22px}
  .card-soft{padding:24px}
  .tl-item{padding-left:40px}
  .modal-dialog{margin:12px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .card-soft:hover,.btn-brand:hover,.btn-ghost:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --brand:#1B5FA8;
  --brand-hover:#1A5495;
  --brand-light:#2E76C4;
  --brand-tint:#E8F1FA;
  --brand-soft:#F1F6FC;
  --accent:#E9603C;
  --ink:#0F1B2A;
  --text:#4A5A6B;
  --muted:#7C8B9B;
  --line:#E4EBF2;
  --line-strong:#D8E2EC;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --sh-1:0 1px 2px rgba(16,42,72,.04),0 8px 24px -12px rgba(16,42,72,.10);
  --sh-2:0 14px 32px -14px rgba(16,42,72,.18);
  --sh-3:0 24px 60px -20px rgba(16,42,72,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-hover)}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35}
p{margin:0 0 14px}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1200px){.container{max-width:1200px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  font-size:17px;
  font-weight:700;
  letter-spacing:.2px;
  white-space:nowrap;
}
.brand:hover{color:var(--ink)}
.brand-mark{display:inline-flex;align-items:center;color:var(--brand)}
.nav-panel{display:flex;align-items:center;gap:28px}
.main-nav{display:flex;align-items:center;gap:32px}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  background:none;
  border:0;
  line-height:1.4;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--brand);
  transition:width .2s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{width:60%}
.nav-link.active{color:var(--ink);font-weight:600}
.nav-link.active::after{width:60%}
.nav-ico{
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--text);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.nav-ico:hover{border-color:var(--brand-light);color:var(--brand);background:var(--brand-tint)}
.nav-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--ink);
}
.nav-toggle:hover{border-color:var(--brand-light);color:var(--brand)}

/* ---------- 通用区块 ---------- */
main{display:block}
.sec{padding:80px 0}
.sec-tight{padding:56px 0}
.sec-head{max-width:760px;margin-bottom:36px}
.sec-head h2{font-size:clamp(24px,2.6vw,31px);margin-bottom:12px}
.sec-sub{font-size:16px;color:var(--muted);margin:0}
.badge-soft{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-tint);
  color:var(--brand);
  font-size:12px;
  font-weight:600;
  letter-spacing:.4px;
  margin-bottom:16px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  cursor:pointer;
  text-decoration:none;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-brand{
  background:var(--brand);
  color:#fff;
  box-shadow:0 8px 24px -12px rgba(16,42,72,.18);
}
.btn-brand:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px)}
.btn-ghost{
  background:transparent;
  color:var(--brand);
  border-color:var(--brand-light);
}
.btn-ghost:hover{background:var(--brand-tint);color:var(--brand);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
}
.link-arrow span{transition:transform .2s ease}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--line-strong)}
.crumb-current{color:var(--text)}

/* ---------- Hero ---------- */
.page-hero{
  background:var(--brand-soft);
  border-bottom:1px solid var(--line);
  padding:64px 0 64px;
}
.page-hero h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.28;
  margin-bottom:16px;
  max-width:620px;
}
.hero-sub{
  font-size:17px;
  color:var(--text);
  margin-bottom:26px;
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-marks{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  font-size:13px;
  color:var(--muted);
}
.hero-marks li{display:flex;align-items:center;gap:16px}
.hero-marks li+li::before{
  content:"";
  width:1px;
  height:12px;
  background:var(--line-strong);
  display:block;
}
.hero-figure{
  margin:0;
  border-radius:18px;
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:#E9EFF6;
  aspect-ratio:3/2;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;border-radius:18px}

/* ---------- 指标条 ---------- */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  background:var(--brand-soft);
  border:1px solid var(--line);
  border-radius:20px;
  padding:34px 8px;
}
.metric{
  padding:6px 24px;
  text-align:left;
  border-left:1px solid var(--line-strong);
}
.metric:first-child{border-left:0}
.metric-num{
  display:block;
  font-size:44px;
  line-height:1.1;
  font-weight:700;
  color:var(--brand);
  letter-spacing:-.5px;
}
.metric-label{
  display:block;
  margin-top:8px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.2px;
}
.metric-note{
  margin:18px 0 0;
  font-size:13px;
  color:var(--muted);
}

/* ---------- 交替图文 ---------- */
.feature-row{padding:36px 0}
.feature-row+.feature-row{border-top:1px solid var(--line)}
.feature-body h2{font-size:clamp(22px,2.4vw,29px);margin-bottom:14px}
.feature-body p{font-size:16px;line-height:1.85;margin-bottom:12px}
.feature-body .link-arrow{margin-top:6px}
.feature-figure{
  margin:0;
  border-radius:var(--r-img);
  overflow:hidden;
  box-shadow:var(--sh-1);
  background:#E9EFF6;
  aspect-ratio:4/3;
}
.feature-figure img{width:100%;height:100%;object-fit:cover}

/* ---------- 安全提示条 ---------- */
.notice{
  display:flex;
  align-items:flex-start;
  gap:16px;
  background:var(--brand-soft);
  border:1px solid #D9E7F5;
  border-radius:12px;
  padding:20px 22px;
}
.notice-ico{flex:0 0 auto;color:var(--brand);line-height:0;margin-top:2px}
.notice p{margin:0;font-size:14px;line-height:1.8;color:var(--text)}

/* ---------- 自查清单 ---------- */
.checklist{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:0 40px;
  background:var(--card);
  border:1px solid #E8EEF5;
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:10px 28px;
}
.checklist li{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:16px 0;
  font-size:15px;
  line-height:1.7;
  border-bottom:1px solid var(--line);
}
.checklist li:nth-last-child(-n+2){border-bottom:0}
.check-dot{
  flex:0 0 auto;
  width:6px;
  height:6px;
  margin-top:9px;
  border-radius:50%;
  background:var(--brand);
}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  background:var(--brand-tint);
  border:1px solid #D5E5F6;
  border-radius:16px;
  padding:32px 34px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:24px;margin-bottom:8px}
.cta-band p{margin:0;font-size:15px;color:var(--text)}
.privacy-note{margin:16px 0 0;font-size:13px;color:var(--muted);line-height:1.8}

/* ---------- 表单弹层 ---------- */
.modal-dialog{max-width:520px}
.modal-content{
  border:0;
  border-radius:16px;
  box-shadow:var(--sh-3);
  padding:6px;
}
.modal-header{border-bottom:1px solid var(--line);padding:20px 22px 14px}
.modal-title{font-size:19px;font-weight:700}
.modal-body{padding:18px 22px 8px}
.modal-footer{border-top:0;padding:8px 22px 20px}
.modal .btn-close{box-shadow:none}
.form-label{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:6px}
.form-control{
  border-radius:10px;
  border:1px solid var(--line-strong);
  padding:11px 14px;
  font-size:15px;
  color:var(--ink);
  background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-control:focus{
  border-color:var(--brand-light);
  box-shadow:0 0 0 3px rgba(46,118,196,.14);
  outline:none;
}
.form-control::placeholder{color:#A8B4C1}
.form-check-input{border-color:var(--line-strong);width:16px;height:16px;margin-top:5px}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand)}
.form-check-label{font-size:13px;color:var(--muted);line-height:1.75}
.form-hint{font-size:13px;color:var(--muted);line-height:1.75;margin:10px 0 0}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:#B9C6D4;
  padding:64px 0 26px;
  margin-top:80px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-brand .brand-mark{color:#4C8CD8}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin:0 0 16px;
  letter-spacing:.2px;
}
.site-footer p{font-size:14px;line-height:1.8;color:#93A3B4;margin:0 0 8px}
.footer-links{display:grid;gap:10px}
.footer-links a{color:#B9C6D4;font-size:14px}
.footer-links a:hover{color:#fff}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  margin-top:38px;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;
  color:#7E8FA1;
}
.footer-bottom .domain{color:#66788B;letter-spacing:.5px}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .container{max-width:100%}
}
@media (max-width:991.98px){
  .nav-panel{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);
    padding:6px 24px 14px;
  }
  .main-nav{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{
    padding:14px 0;
    border-bottom:1px solid var(--line);
    font-size:15px;
  }
  .nav-link::after{display:none}
  .nav-link.active{color:var(--brand)}
  .nav-link.active::before{
    content:"";
    display:inline-block;
    width:6px;
    height:6px;
    border-radius:50%;
    background:var(--brand);
    margin-right:8px;
    vertical-align:middle;
  }
  .sec{padding:56px 0}
  .page-hero{padding:44px 0 48px}
  .page-hero h1{max-width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .metric-num{font-size:38px}
}
@media (min-width:992px){
  .nav-panel{display:flex !important}
}
@media (max-width:767.98px){
  .container{padding-left:20px;padding-right:20px}
  .sec{padding:48px 0}
  .feature-row{padding:28px 0}
  .page-hero{padding:32px 0 40px}
  .hero-figure{aspect-ratio:16/9}
  .hero-actions .btn{width:100%}
  .metrics{grid-template-columns:repeat(2,1fr);padding:24px 6px}
  .metric{border-left:0;border-top:1px solid var(--line-strong);padding:16px 20px}
  .metric:nth-child(1),.metric:nth-child(2){border-top:0}
  .metric:nth-child(odd){border-right:1px solid var(--line-strong)}
  .checklist{grid-template-columns:1fr;padding:8px 20px}
  .checklist li:nth-last-child(2){border-bottom:1px solid var(--line)}
  .checklist li:last-child{border-bottom:0}
  .cta-band{padding:26px 22px}
  .cta-band .btn{width:100%}
  .modal-dialog{margin:12px}
}
@media (max-width:575.98px){
  body{font-size:15.5px}
  .brand span:last-child{font-size:16px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .metrics{grid-template-columns:1fr}
  .metric{border-right:0}
  .metric:nth-child(odd){border-right:0}
  .metric:nth-child(2){border-top:1px solid var(--line-strong)}
  .hero-marks{gap:12px}
  .hero-marks li{gap:12px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .btn:hover,.link-arrow:hover span{transform:none !important}
}

/* roulang page: category3 */
:root{
  --brand:#1B5FA8;
  --brand-dark:#1A5495;
  --brand-light:#2E76C4;
  --brand-soft:#E8F1FA;
  --brand-tint:#F0F5FB;
  --accent:#E9603C;
  --ink:#0F1B2A;
  --text:#4A5A6B;
  --muted:#7C8B9B;
  --line:#E4EBF2;
  --line-strong:#E8EEF5;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,42,72,.04);
  --sh-2:0 8px 24px -12px rgba(16,42,72,.10);
  --sh-3:0 14px 32px -14px rgba(16,42,72,.18);
  --sh-4:0 24px 60px -24px rgba(16,42,72,.28);
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--brand);text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:72px 0}
.section-tight{padding:56px 0}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-size:17px;font-weight:700;letter-spacing:-.01em}
.brand:hover{color:var(--brand)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;color:var(--brand);line-height:0}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--ink);transition:border-color var(--ease),color var(--ease)}
.nav-toggle:hover{border-color:var(--brand-light);color:var(--brand)}
.nav-panel{display:flex;align-items:center;gap:32px}
.main-nav{display:flex;align-items:center;gap:32px}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:14.5px;font-weight:500;color:var(--text);transition:color var(--ease)}
.nav-link:hover{color:var(--brand)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:0;bottom:-4px;width:60%;height:2px;border-radius:2px;background:var(--brand)}
.nav-ico{width:38px;height:38px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--text);align-items:center;justify-content:center;transition:border-color var(--ease),color var(--ease)}
.nav-ico:hover{border-color:var(--brand-light);color:var(--brand)}
@media (min-width:992px){
  .nav-panel.collapse{display:flex}
}
@media (max-width:991.98px){
  .nav-panel{
    position:absolute;top:68px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
    padding:6px 24px 14px;
  }
  .main-nav{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{padding:15px 0;border-bottom:1px solid var(--line);font-size:15px}
  .nav-link.active::after{display:none}
  .nav-link.active::before{content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);width:6px;height:6px;border-radius:50%;background:var(--brand)}
  .nav-ico{display:none}
}

/* ---------- page hero ---------- */
.page-hero{background:#fff;border-bottom:1px solid var(--line);padding:30px 0 46px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C7D3DF}
.page-hero h1{font-size:clamp(28px,3.4vw,40px);line-height:1.3;letter-spacing:-.02em;max-width:860px}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.8;color:var(--text);max-width:740px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-pill);background:#fff;color:var(--text);font-size:13px;transition:border-color var(--ease),color var(--ease),background var(--ease)}
.tag:hover{border-color:var(--brand-light);color:var(--brand)}
.tag.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}

/* ---------- faq layout ---------- */
.faq-block{padding:64px 0 20px}
.side-index{position:sticky;top:96px}
.side-title{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--muted);margin-bottom:14px}
.side-index a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--text);transition:color var(--ease),padding-left var(--ease)}
.side-index a em{font-style:normal;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.side-index a:hover{color:var(--brand);padding-left:4px}
.side-index a.active{color:var(--brand);font-weight:600}
.side-index a.active em{color:var(--brand)}

.faq-group{margin-bottom:48px;scroll-margin-top:100px}
.faq-group:last-child{margin-bottom:0}
.faq-group-title{display:flex;align-items:center;gap:10px;font-size:20px;line-height:1.5;font-weight:600}
.faq-group-title .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);flex:0 0 auto}
.faq-group-note{margin-top:8px;font-size:13.5px;color:var(--muted)}
.faq-card{margin-top:16px;padding:8px 32px;background:var(--card);border:1px solid var(--line-strong);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:box-shadow var(--ease)}
.faq-card:hover{box-shadow:var(--sh-2)}

.accordion{--bs-accordion-border-width:0;--bs-accordion-bg:transparent}
.accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.accordion-item:first-of-type{border-top:0}
.accordion-button{
  position:relative;display:flex;align-items:flex-start;gap:16px;
  padding:20px 0 20px 16px;
  font-size:16px;font-weight:600;line-height:1.65;color:var(--ink);
  background:transparent;border:0;border-radius:0 !important;box-shadow:none;
  transition:color var(--ease);
}
.accordion-button::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:2px;background:var(--brand);opacity:0;transition:opacity var(--ease)}
.accordion-button::after{display:none}
.accordion-button:hover{color:var(--brand)}
.accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none}
.accordion-button:not(.collapsed)::before{opacity:1}
.accordion-button:focus{box-shadow:none}
.accordion-button:focus-visible{outline:2px solid var(--brand);outline-offset:-2px}
.acc-ico{position:relative;flex:0 0 auto;width:18px;height:18px;margin-left:auto;margin-top:3px;color:var(--muted);transition:color var(--ease)}
.acc-ico::before,.acc-ico::after{content:"";position:absolute;background:currentColor;border-radius:1px}
.acc-ico::before{left:2px;top:8.2px;width:14px;height:1.6px}
.acc-ico::after{left:8.2px;top:2px;width:1.6px;height:14px;transition:transform var(--ease),opacity var(--ease)}
.accordion-button:not(.collapsed) .acc-ico{color:var(--brand)}
.accordion-button:not(.collapsed) .acc-ico::after{transform:scaleY(0);opacity:0}
.accordion-body{padding:0 8px 22px 16px;max-width:760px;font-size:15px;line-height:1.85;color:var(--text)}

@media (max-width:991.98px){
  .side-index{position:static;margin-bottom:32px}
  .side-title{margin-bottom:10px}
  .side-index ul{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
  .side-index li{flex:0 0 auto}
  .side-index a{border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 16px;white-space:nowrap;background:#fff}
  .side-index a em{display:none}
  .side-index a.active{border-color:var(--brand);background:var(--brand-soft)}
  .faq-card{padding:6px 20px}
}

/* ---------- check strip ---------- */
.check-strip{background:var(--brand-tint);border-radius:20px;padding:40px 32px}
.check-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.check-head h2{font-size:clamp(22px,2.4vw,28px);line-height:1.35}
.check-head p{font-size:14px;color:var(--muted);max-width:520px}
.check-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.check-item{padding:0 24px;border-left:1px solid rgba(27,95,168,.16)}
.check-item:first-child{border-left:0;padding-left:0}
.check-num{font-size:30px;font-weight:700;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums}
.check-item h3{margin-top:8px;font-size:16px;font-weight:600}
.check-item p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--text)}

/* ---------- support ---------- */
.support-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px}
.support-grid h2{font-size:clamp(22px,2.4vw,28px);line-height:1.35;margin-bottom:14px}
.support-lead{font-size:15px;line-height:1.85}
.support-list li{display:flex;gap:18px;padding:20px 0;border-top:1px solid var(--line)}
.support-list li:last-child{border-bottom:1px solid var(--line)}
.support-list .idx{font-size:13px;font-weight:600;color:var(--brand);padding-top:3px;font-variant-numeric:tabular-nums;min-width:28px}
.support-list h3{font-size:16px;font-weight:600;margin-bottom:4px}
.support-list p{font-size:14.5px;line-height:1.8}
.inline-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand)}
.inline-link span{transition:transform var(--ease)}
.inline-link:hover span{transform:translateX(4px)}

/* ---------- cta ---------- */
.cta-band{margin-top:40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;padding:28px 32px;background:var(--brand-soft);border-radius:16px}
.cta-band h3{font-size:19px;font-weight:600;margin-bottom:6px}
.cta-band p{font-size:14px;color:var(--text);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.privacy-note{margin-top:18px;font-size:13px;line-height:1.8;color:var(--muted)}
.privacy-note a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.privacy-note a:hover{color:var(--brand)}

/* ---------- buttons ---------- */
.btn{border-radius:var(--r-btn);font-size:15px;font-weight:600;padding:11px 22px;border:1px solid transparent;line-height:1.4;transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease)}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover,.btn-brand:focus{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-brand:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover,.btn-ghost:focus{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px)}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- modal & form ---------- */
.modal-dialog{max-width:520px}
.modal-content{border:0;border-radius:16px;box-shadow:var(--sh-4)}
.modal-header{border-bottom:1px solid var(--line);padding:20px 24px}
.modal-title{font-size:19px;font-weight:600}
.modal-body{padding:22px 24px 26px}
.modal-header .btn-close{opacity:.5}
.modal-header .btn-close:hover{opacity:.85}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
.form-control{width:100%;padding:11px 14px;font-size:15px;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:var(--r-input);transition:border-color var(--ease),box-shadow var(--ease)}
.form-control::placeholder{color:#A9B6C3}
.form-control:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,95,168,.12);outline:none}
textarea.form-control{min-height:96px;resize:vertical}
.form-check{display:flex;align-items:flex-start;gap:10px;margin:18px 0 6px}
.form-check input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand);flex:0 0 auto}
.form-check label{font-size:13px;line-height:1.7;color:var(--muted)}
.form-note{margin-top:12px;font-size:13px;line-height:1.75;color:var(--muted)}
.form-tip{display:none;margin-top:14px;padding:10px 14px;border-radius:10px;background:var(--brand-soft);color:var(--brand);font-size:13.5px}
.form-tip.is-show{display:block}

/* ---------- footer ---------- */
.site-footer{margin-top:64px;background:#0F1B2A;color:#B9C6D4;padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.site-footer p{font-size:13.5px;line-height:1.85;color:#9EAEBE}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px}
.footer-brand .brand-mark{color:#5FA0DE}
.footer-links li{margin-bottom:9px}
.footer-links a{font-size:13.5px;color:#B9C6D4;transition:color var(--ease)}
.footer-links a:hover{color:#fff}
.footer-bottom{margin-top:40px;padding-top:18px;border-top:1px solid rgba(255,255,255,.10);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:#8FA0B2}
.footer-bottom .domain{color:#6E7F91;letter-spacing:.02em}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr}
}

/* ---------- responsive ---------- */
@media (max-width:991.98px){
  .section{padding:56px 0}
  .check-strip{padding:32px 24px}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:28px}
  .check-item:nth-child(3){border-left:0;padding-left:0}
  .support-grid{grid-template-columns:1fr;gap:24px}
}
@media (max-width:767.98px){
  .container{padding-left:20px;padding-right:20px}
  .section{padding:48px 0}
  .faq-block{padding:48px 0 12px}
  .page-hero{padding:24px 0 36px}
  .cta-band{padding:24px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto;text-align:center}
}
@media (max-width:575.98px){
  .check-grid{grid-template-columns:1fr;row-gap:22px}
  .check-item{padding:18px 0 0;border-left:0;border-top:1px solid rgba(27,95,168,.16)}
  .check-item:first-child{padding-top:0;border-top:0}
  .modal-dialog{margin:12px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .btn-brand:hover,.btn-ghost:hover,.inline-link:hover span{transform:none}
}