/* roulang page: index */
:root{
  --brand-700:#0F4FA8;
  --brand-600:#1667D6;
  --brand-500:#2C82F0;
  --brand-100:#E4EEFC;
  --brand-50:#F2F7FE;
  --accent-500:#FF6A2B;
  --accent-50:#FFF1E9;
  --ink-900:#0E1A2B;
  --ink-600:#46586F;
  --ink-400:#8496AC;
  --line:#E3EAF3;
  --bg:#F6F9FD;
  --white:#FFFFFF;
  --ok:#17A673;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 2px 8px rgba(14,26,43,.05),0 12px 32px rgba(14,26,43,.06);
  --shadow-hover:0 6px 18px rgba(14,26,43,.08),0 18px 44px rgba(14,26,43,.1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg);
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;background-color:transparent}
button,input,select{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
a:focus-visible,button:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:8px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.scrolled{box-shadow:0 4px 18px rgba(14,26,43,.06)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:34px;height:34px;color:var(--brand-600);flex:none}
.logo-text{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.nav-chips{display:flex;align-items:center;gap:8px;margin-left:auto}
.chip{
  position:relative;display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border:1px solid var(--line);border-radius:999px;background:var(--white);
  font-size:14px;color:var(--ink-600);white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-100)}
.chip.active{background:var(--brand-600);color:#fff;border-color:var(--brand-600);font-weight:600}
.chip.active::after{
  content:"";position:absolute;left:50%;bottom:-9px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--accent-500);
}
.header-actions{display:flex;align-items:center;gap:14px;flex:none}
.link-quiet{font-size:14px;color:var(--ink-600);position:relative;transition:color .2s ease}
.link-quiet:hover{color:var(--brand-600)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 8px 20px rgba(22,103,214,.25)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:var(--white);color:var(--ink-900);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700)}
.btn-sm{min-height:40px;padding:8px 16px;font-size:14px}

/* ---------- Hero ---------- */
.hero{
  padding:64px 0 72px;
  background:linear-gradient(180deg,#fff 0%,var(--brand-50) 100%);
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-700);font-size:13px;font-weight:600;
  border:1px solid var(--brand-100);margin-bottom:20px;
}
.hero h1{font-size:clamp(30px,4.6vw,52px);line-height:1.15;letter-spacing:-.01em;font-weight:700}
.hero-sub{margin-top:18px;font-size:18px;color:var(--ink-600);line-height:1.7}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-note{margin-top:22px;font-size:13px;line-height:1.7;color:var(--ink-400);max-width:520px}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-card);border:1px solid var(--line);
  background:var(--brand-50);box-shadow:var(--shadow-card);
}
.float-card{
  position:absolute;left:-22px;bottom:-26px;width:250px;padding:16px 18px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}
.float-title{font-size:13px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.float-step{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-600);padding:5px 0}
.dot{
  width:22px;height:22px;border-radius:999px;background:var(--brand-600);color:#fff;
  font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
  flex:none;font-variant-numeric:tabular-nums;
}

/* ---------- 板块 ---------- */
.section{padding:64px 0}
.section-line{border-top:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25}
.section-head p{margin-top:12px;color:var(--ink-600)}
.section-head.row{
  max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
}
.text-link{
  display:inline-block;position:relative;font-size:14px;font-weight:600;color:var(--brand-600);
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;
  background:var(--brand-600);transition:width .2s ease;
}
.text-link:hover::after{width:100%}

/* ---------- 痛点列表 ---------- */
.pain-list{border-top:1px solid var(--line)}
.pain-list li{
  display:flex;align-items:center;gap:24px;padding:26px 0;border-bottom:1px solid var(--line);
}
.pain-no{font-size:15px;font-weight:800;color:var(--brand-600);min-width:36px;font-variant-numeric:tabular-nums}
.pain-body{flex:1;min-width:0}
.pain-body h3{font-size:18px;line-height:1.4}
.pain-body p{margin-top:6px;font-size:14px;color:var(--ink-400)}
.arrow-btn{
  width:44px;height:44px;flex:none;border-radius:999px;border:1px solid var(--line);
  background:var(--white);color:var(--brand-600);display:inline-flex;align-items:center;justify-content:center;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.arrow-btn:hover{background:var(--brand-600);border-color:var(--brand-600);color:#fff;transform:translateY(2px)}

/* ---------- 方案卡片 ---------- */
.solution-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px}
.card{
  display:flex;flex-direction:column;gap:14px;padding:24px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.card-lg{grid-row:span 2}
.card-img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img);
  background:var(--brand-50);border:1px solid var(--line);
}
.card h3{font-size:20px;line-height:1.4}
.card p{font-size:15px}
.tag{
  align-self:flex-start;display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--accent-50);color:var(--accent-500);
}
.tag-brand{background:var(--brand-50);color:var(--brand-600)}
.point-list{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.point-list li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-600)}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:999px;background:var(--brand-500);
}
.card .text-link{margin-top:auto}

/* ---------- 数据带 ---------- */
.stats-band{
  background:var(--brand-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:48px 0;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-num{
  display:inline-block;font-size:clamp(28px,3.4vw,40px);font-weight:800;line-height:1.1;
  color:var(--ink-900);font-variant-numeric:tabular-nums;
  border-bottom:3px solid var(--accent-500);padding-bottom:4px;
}
.stat-label{margin-top:12px;font-size:14px;color:var(--ink-600)}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:24px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.news-card:first-child{grid-row:span 4}
.news-thumb{
  background:var(--brand-50);overflow:hidden;flex:none;
}
.news-card:first-child .news-thumb{width:100%;aspect-ratio:16/9}
.news-card:first-child .news-thumb img{width:100%;height:100%;object-fit:cover}
.news-card:not(:first-child){flex-direction:row;align-items:center;gap:14px;padding:14px}
.news-card:not(:first-child) .news-thumb{width:92px;aspect-ratio:4/3;border-radius:10px}
.news-card:not(:first-child) .news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;min-width:0}
.news-card:not(:first-child) .news-body{padding:0;gap:6px}
.news-title{
  font-size:17px;line-height:1.5;font-weight:700;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  word-break:break-word;
}
.news-card:not(:first-child) .news-title{font-size:15px;line-height:1.45}
.news-summary{
  font-size:14px;line-height:1.7;color:var(--ink-600);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:not(:first-child) .news-summary{display:none}
.news-meta{
  display:flex;align-items:center;gap:10px;margin-top:auto;font-size:13px;color:var(--ink-400);
  flex-wrap:wrap;
}
.pill{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;
  font-size:13px;background:var(--brand-50);color:var(--brand-600);white-space:nowrap;
}
.news-empty{
  grid-column:1 / -1;
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:56px 24px;background:var(--white);border:1px dashed var(--line);border-radius:var(--radius-card);
  text-align:center;
}
.news-empty svg{width:44px;height:44px;color:var(--brand-500)}
.news-empty p{font-size:15px;color:var(--ink-600)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:920px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.5;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{position:relative;width:24px;height:24px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:2px;
  transition:transform .2s ease;
}
.faq-icon::before{left:50%;top:4px;width:2px;height:16px;transform:translateX(-50%)}
.faq-icon::after{top:50%;left:4px;height:2px;width:16px;transform:translateY(-50%)}
.faq-item.open .faq-icon::before{transform:translateX(-50%) rotate(45deg)}
.faq-item.open .faq-icon::after{transform:translateY(-50%) rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:260px}
.faq-a p{padding-bottom:20px;max-width:760px;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:64px 0;
}
.cta-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center}
.cta-grid h2{font-size:clamp(24px,3vw,32px);line-height:1.3}
.cta-grid p{margin-top:14px;font-size:16px;color:var(--ink-600);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--white);border-top:1px solid var(--line);padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .logo-mark{width:30px;height:30px}
.footer-brand span{font-size:16px;font-weight:800;color:var(--ink-900)}
.footer-text{font-size:14px;line-height:1.8;color:var(--ink-400);max-width:320px}
.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,.footer-col li{font-size:14px;color:var(--ink-600);transition:color .2s ease}
.footer-col a:hover{color:var(--brand-600)}
.footer-bottom{
  margin-top:44px;border-top:1px solid var(--line);padding:20px 0;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-400);
}

/* ---------- 表单弹层 ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;
  padding:20px;background:rgba(14,26,43,.45);
}
.modal-mask.open{display:flex}
.modal{
  position:relative;width:100%;max-width:480px;max-height:90vh;overflow:auto;
  padding:28px;background:var(--white);border-radius:var(--radius-card);
  box-shadow:0 24px 64px rgba(14,26,43,.25);
}
.modal h2{font-size:21px;margin-bottom:6px}
.modal-lead{font-size:14px;color:var(--ink-400);margin-bottom:22px}
.modal-close{
  position:absolute;top:8px;right:8px;width:40px;height:40px;border:0;background:transparent;
  border-radius:10px;font-size:22px;line-height:1;color:var(--ink-400);cursor:pointer;
  transition:background .2s ease,color .2s ease;
}
.modal-close:hover{background:var(--brand-50);color:var(--brand-700)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:8px}
.req{color:var(--accent-500)}
.input{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--white);font-size:15px;color:var(--ink-900);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
select.input{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-400) 50%),linear-gradient(135deg,var(--ink-400) 50%,transparent 50%);background-position:calc(100% - 19px) 19px,calc(100% - 14px) 19px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.phone-wrap{
  display:flex;align-items:center;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);
  overflow:hidden;background:var(--white);transition:border-color .2s ease,box-shadow .2s ease;
}
.phone-wrap:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
.phone-wrap span{
  height:100%;display:flex;align-items:center;padding:0 12px;font-size:14px;color:var(--ink-400);
  background:var(--brand-50);border-right:1px solid var(--line);
}
.phone-wrap input{flex:1;min-width:0;height:100%;border:0;padding:0 14px;font-size:15px;outline:none;background:transparent}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;line-height:1.6;color:var(--ink-600)}
.check-row input{margin-top:3px;width:16px;height:16px;accent-color:var(--brand-600);flex:none}
.check-row a{color:var(--brand-600);text-decoration:underline;text-underline-offset:2px}
.modal-actions{margin-top:22px}
.modal-actions .btn{width:100%}
.modal-privacy{margin-top:14px;font-size:12px;line-height:1.7;color:var(--ink-400)}
.form-tip{margin-top:14px;font-size:13px;color:var(--ok);display:none}
.form-tip.show{display:block}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-grid{gap:36px}
  .solution-grid{grid-template-columns:1fr}
  .card-lg{grid-row:auto}
  .cta-grid{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
}
@media (max-width:900px){
  .header-inner{flex-wrap:wrap;padding-top:12px;padding-bottom:12px;gap:12px}
  .logo{order:1}
  .header-actions{order:2;margin-left:auto}
  .nav-chips{
    order:3;width:100%;margin-left:0;overflow-x:auto;padding-bottom:6px;
    scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;
    mask-image:linear-gradient(90deg,#000 88%,transparent 100%);
    -webkit-mask-image:linear-gradient(90deg,#000 88%,transparent 100%);
  }
  .nav-chips::-webkit-scrollbar{display:none}
  .chip{scroll-snap-align:start}
  .news-grid{grid-template-columns:1fr}
  .news-card:first-child{grid-row:auto}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-text{max-width:none}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .hero{padding:44px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .float-card{position:static;width:100%;margin-top:16px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .section-head.row{flex-direction:column;align-items:flex-start;gap:12px}
  .pain-list li{gap:16px;padding:22px 0;align-items:flex-start}
  .pain-no{min-width:30px;padding-top:2px}
  .arrow-btn{width:44px;height:44px}
  .cta-band{padding:48px 0}
  .modal-mask{align-items:flex-end;padding:0}
  .modal{border-radius:16px 16px 0 0;max-height:88vh;padding:24px 20px}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .news-card:not(:first-child) .news-thumb{width:76px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: article */
:root{
  --brand-700:#0F4FA8;
  --brand-600:#1667D6;
  --brand-500:#2C82F0;
  --brand-100:#E4EEFC;
  --brand-50:#F2F7FE;
  --accent-500:#FF6A2B;
  --accent-50:#FFF1E9;
  --ink-900:#0E1A2B;
  --ink-600:#46586F;
  --ink-400:#8496AC;
  --line:#E3EAF3;
  --bg:#F6F9FD;
  --white:#FFFFFF;
  --ok:#17A673;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 2px 8px rgba(14,26,43,.05),0 12px 32px rgba(14,26,43,.06);
  --shadow-hover:0 6px 16px rgba(14,26,43,.08),0 18px 44px rgba(14,26,43,.10);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
img{max-width:100%;display:block;background:var(--brand-50)}
button{font-family:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(14,26,43,.07)}
.header-inner{display:flex;align-items:center;gap:22px;min-height:72px}
.logo{display:flex;align-items:center;gap:9px;flex-shrink:0}
.logo-mark{width:32px;height:32px;color:var(--brand-600);flex-shrink:0}
.logo-text{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:.01em;white-space:nowrap}
.nav-chips{display:flex;align-items:center;gap:8px;flex:1;justify-content:center}
.chip{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 16px;border-radius:999px;font-size:14px;font-weight:600;
  background:#fff;border:1px solid var(--line);color:var(--ink-600);
  white-space:nowrap;transition:background-color .2s ease,color .2s ease,border-color .2s ease;
  min-height:38px;
}
.chip:hover{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700)}
.chip.active{background:var(--brand-600);border-color:var(--brand-600);color:#fff}
.chip.active::after{
  content:"";position:absolute;left:50%;bottom:-11px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--accent-500);
}
.header-actions{display:flex;align-items:center;gap:16px;flex-shrink:0}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;
  min-height:44px;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(22,103,214,.22)}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 10px 24px rgba(22,103,214,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(22,103,214,.2)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px}
.link-quiet{
  font-size:14px;font-weight:600;color:var(--ink-600);
  padding:6px 0;border-bottom:2px solid transparent;white-space:nowrap;
}
.link-quiet:hover{color:var(--brand-600);border-bottom-color:var(--brand-600)}

@media(max-width:900px){
  .header-inner{flex-wrap:wrap;gap:10px;padding-top:10px;padding-bottom:10px;min-height:0}
  .logo{order:1}
  .header-actions{order:2;margin-left:auto;gap:12px}
  .nav-chips{
    order:3;flex-basis:100%;justify-content:flex-start;
    overflow-x:auto;gap:8px;padding-bottom:4px;
    scroll-snap-type:x proximity;
    -ms-overflow-style:none;scrollbar-width:none;
    -webkit-mask-image:linear-gradient(to right,#000 88%,transparent);
    mask-image:linear-gradient(to right,#000 88%,transparent);
  }
  .nav-chips::-webkit-scrollbar{display:none}
  .chip{scroll-snap-align:start}
  .chip.active::after{bottom:-6px}
}
@media(max-width:520px){
  .logo-text{font-size:15px}
  .logo-mark{width:28px;height:28px}
  .header-actions .link-quiet{display:none}
}

/* ---------- article hero ---------- */
.article-hero{
  background:linear-gradient(180deg,#FFFFFF 0%,var(--brand-50) 100%);
  border-bottom:1px solid var(--line);
  padding:26px 0 40px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400)}
.breadcrumb a{color:var(--ink-400)}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .crumb-current{color:var(--ink-600);font-weight:600}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:40px;align-items:center;margin-top:22px}
.hero-copy h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.2;
  margin-bottom:18px;
}
.hero-copy h1 .hl{
  background:linear-gradient(180deg,transparent 66%,var(--accent-50) 66%);
  padding:0 2px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;color:var(--ink-400)}
.meta-row .divider{width:1px;height:14px;background:var(--line)}
.meta-row .num{font-variant-numeric:tabular-nums;font-weight:700;color:var(--ink-900)}
.pill-brand{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--brand-50);color:var(--brand-600);border:1px solid var(--brand-100);
}
.hero-art{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);aspect-ratio:4/3;
}
.hero-art img{width:100%;height:100%;object-fit:cover}
@media(max-width:900px){
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .hero-art{aspect-ratio:16/9;order:-1}
}

/* ---------- article layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:40px;align-items:start;padding:48px 0 8px;
}
@media(max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;padding-top:36px}
}
.article-main{min-width:0}
.side-inner{position:static}
@media(min-width:1024px){
  .side-inner{position:sticky;top:104px}
}

.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 22px 18px;box-shadow:var(--shadow-card);margin-bottom:24px;
}
.side-card h3{font-size:15px;font-weight:800;letter-spacing:.02em;margin-bottom:14px}
.side-card h3 span{color:var(--brand-600)}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:2px solid var(--line);padding-left:0}
.toc-link{
  display:block;font-size:14px;line-height:1.6;color:var(--ink-600);
  padding:7px 12px;border-left:2px solid transparent;margin-left:-2px;
  border-radius:0 8px 8px 0;transition:color .2s ease,background-color .2s ease,border-color .2s ease;
}
.toc-link:hover{color:var(--brand-700);background:var(--brand-50)}
.toc-link.is-active{color:var(--brand-700);font-weight:700;border-left-color:var(--brand-600);background:var(--brand-50)}
.side-links{display:flex;flex-direction:column;gap:14px}
.side-links a{
  display:block;font-size:14px;font-weight:600;color:var(--ink-900);
  line-height:1.5;padding-bottom:12px;border-bottom:1px solid var(--line);
}
.side-links li:last-child a{border-bottom:none;padding-bottom:0}
.side-links a:hover{color:var(--brand-600)}
.side-links .side-note{display:block;font-size:12px;font-weight:400;color:var(--ink-400);margin-top:5px}

/* ---------- prose ---------- */
.prose{
  max-width:760px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:44px 46px;box-shadow:var(--shadow-card);
}
.prose h2{
  font-size:clamp(21px,2.2vw,26px);line-height:1.4;
  margin:48px 0 16px;padding-left:14px;border-left:3px solid var(--brand-600);
}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:20px;line-height:1.45;margin:30px 0 12px}
.prose h4{font-size:17px;margin:24px 0 10px}
.prose p{margin:0 0 20px;line-height:1.9}
.prose ul,.prose ol{margin:0 0 20px;padding-left:1.4em;list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin:8px 0;line-height:1.85}
.prose blockquote{
  margin:24px 0;padding:16px 22px;
  background:var(--brand-50);border-left:3px solid var(--brand-600);
  border-radius:0 12px 12px 0;color:var(--ink-900);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--radius-img);margin:24px auto}
.prose figure{margin:24px 0}
.prose figcaption{text-align:center;font-size:13px;color:var(--ink-400);margin-top:10px}
.prose a{color:var(--brand-600);border-bottom:2px solid var(--brand-100)}
.prose a:hover{color:var(--brand-700);border-bottom-color:var(--brand-600)}
.prose strong{color:var(--ink-900);font-weight:700}
.prose hr{border:none;border-top:1px solid var(--line);margin:32px 0}
.prose table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:15px}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.prose th{background:var(--brand-50);color:var(--ink-900);font-weight:700}
@media(max-width:640px){
  .prose{padding:26px 20px;border-radius:14px}
  .prose h2{margin-top:36px}
}

.back-bar{
  max-width:760px;margin:24px 0 0;padding:20px 22px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.back-bar p{font-size:14px;color:var(--ink-400)}
.back-bar .bar-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}

.empty-state{
  max-width:760px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:56px 40px;text-align:center;
  box-shadow:var(--shadow-card);
}
.empty-icon{
  width:56px;height:56px;border-radius:50%;margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-50);color:var(--brand-600);font-size:24px;font-weight:800;
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{font-size:15px;color:var(--ink-400);margin-bottom:24px}

/* ---------- related ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.section-head h2{font-size:clamp(22px,2.6vw,30px)}
.section-head p{font-size:14px;color:var(--ink-400);margin-top:6px}
.related{margin-top:56px;padding-top:42px;border-top:1px solid var(--line)}
.rec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
@media(max-width:640px){.rec-grid{grid-template-columns:minmax(0,1fr)}}
.card{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.card-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--brand-50)}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.card-title{
  font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-desc{
  font-size:14px;line-height:1.75;color:var(--ink-600);margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-400);margin-top:auto;padding-top:16px}
.card-meta .num{font-variant-numeric:tabular-nums}
.card:hover .card-title{color:var(--brand-700)}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:72px;padding:56px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(21px,2.4vw,28px);margin-bottom:8px}
.cta-inner p{font-size:15px;color:var(--ink-600);max-width:620px}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-50);border-top:1px solid var(--line);padding-top:56px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:32px}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr;gap:28px}}
.footer-brand{display:flex;align-items:center;gap:9px;margin-bottom:14px}
.footer-brand span{font-size:16px;font-weight:800;color:var(--ink-900)}
.footer-brand .logo-mark{color:var(--brand-600)}
.footer-text{font-size:14px;line-height:1.8;color:var(--ink-400);max-width:340px}
.footer-col h4{font-size:15px;font-weight:800;margin-bottom:16px}
.footer-col li{font-size:14px;color:var(--ink-400);margin-bottom:11px;line-height:1.6}
.footer-col a{color:var(--ink-600)}
.footer-col a:hover{color:var(--brand-600);border-bottom:2px solid var(--brand-600);padding-bottom:1px}
.footer-bottom{
  margin-top:44px;border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-400);
}
.footer-bottom .num{font-variant-numeric:tabular-nums}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:20px}
.modal.is-open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(14,26,43,.45)}
.modal-panel{
  position:relative;z-index:1;width:100%;max-width:480px;background:#fff;
  border-radius:16px;padding:28px 28px 26px;box-shadow:0 24px 60px rgba(14,26,43,.24);
  max-height:92vh;overflow-y:auto;
}
@media(max-width:640px){
  .modal{align-items:flex-end;padding:0}
  .modal-panel{border-radius:16px 16px 0 0;max-width:100%;padding:24px 20px 28px}
}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:20px}
.modal-head h2{font-size:20px}
.modal-head p{font-size:13px;color:var(--ink-400);margin-top:6px}
.modal-close{
  width:40px;height:40px;flex-shrink:0;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink-600);font-size:18px;line-height:1;
  display:flex;align-items:center;justify-content:center;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.modal-close:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-100)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:7px}
.field .req{color:var(--accent-500)}
.control{
  width:100%;height:44px;border-radius:var(--radius-btn);border:1px solid var(--line);
  background:#fff;padding:0 14px;font-size:15px;color:var(--ink-900);font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.control:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
select.control{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-400) 50%),linear-gradient(135deg,var(--ink-400) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 15px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.phone-group{display:flex}
.phone-prefix{
  display:flex;align-items:center;padding:0 13px;border:1px solid var(--line);border-right:none;
  border-radius:var(--radius-btn) 0 0 var(--radius-btn);
  background:var(--brand-50);color:var(--ink-600);font-size:14px;font-weight:600;
}
.phone-group .control{border-radius:0 var(--radius-btn) var(--radius-btn) 0}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-400);line-height:1.7;margin:18px 0 20px}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand-600);flex-shrink:0}
.check-row a{color:var(--brand-600);border-bottom:2px solid var(--brand-100)}
.check-row a:hover{border-bottom-color:var(--brand-600)}
.modal-submit{width:100%}
.privacy-note{font-size:12px;color:var(--ink-400);line-height:1.7;margin-top:14px}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:50;
  width:46px;height:46px;border-radius:12px;border:1px solid var(--line);background:#fff;
  color:var(--brand-600);font-size:16px;display:none;align-items:center;justify-content:center;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.to-top.is-visible{display:flex}
.to-top:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);background:var(--brand-50)}
@media(max-width:520px){.to-top{right:14px;bottom:16px;width:44px;height:44px}}

/* roulang page: category2 */
:root{
  --brand-700:#0F4FA8;--brand-600:#1667D6;--brand-500:#2C82F0;--brand-100:#E4EEFC;--brand-50:#F2F7FE;
  --accent-500:#FF6A2B;--accent-50:#FFF1E9;
  --ink-900:#0E1A2B;--ink-700:#243449;--ink-600:#46586F;--ink-400:#8496AC;
  --line:#E3EAF3;--bg:#F6F9FD;--white:#FFFFFF;--ok:#17A673;
  --radius-card:16px;--radius-img:12px;--radius-btn:10px;
  --shadow-card:0 2px 8px rgba(14,26,43,.05),0 12px 32px rgba(14,26,43,.06);
  --shadow-card-hover:0 6px 14px rgba(14,26,43,.08),0 18px 44px rgba(14,26,43,.10);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink-600);font-family:var(--font-cn);font-size:16px;line-height:1.85;letter-spacing:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.scrolled{box-shadow:0 6px 18px rgba(14,26,43,.06)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px;flex-wrap:wrap;padding-top:12px;padding-bottom:12px}
@media(min-width:900px){.header-inner{flex-wrap:nowrap;padding-top:0;padding-bottom:0}}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--brand-700);order:1}
.logo-mark{width:34px;height:34px;flex:0 0 34px;color:var(--brand-600)}
.logo-text{font-size:17px;font-weight:800;color:var(--ink-900);white-space:nowrap;letter-spacing:-.01em}
.nav-chips{order:3;width:100%;display:flex;align-items:center;gap:10px;overflow-x:auto;padding-bottom:12px;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;mask-image:linear-gradient(to right,#000 86%,transparent)}
.nav-chips::-webkit-scrollbar{display:none}
.nav-chips{scrollbar-width:none}
.chip{position:relative;display:inline-flex;align-items:center;height:38px;padding:0 16px;border:1px solid var(--line);border-radius:999px;background:var(--white);color:var(--ink-600);font-size:14px;font-weight:500;white-space:nowrap;scroll-snap-align:start;transition:background-color .2s ease,color .2s ease,border-color .2s ease}
.chip:hover{background:var(--brand-50);color:var(--brand-700);border-color:#CFE0F8}
.chip.active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;font-weight:600}
.chip.active::after{content:"";position:absolute;left:50%;bottom:-8px;transform:translateX(-50%);width:22px;height:2px;border-radius:2px;background:var(--accent-500)}
.chip:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.header-actions{order:2;margin-left:auto;display:flex;align-items:center;gap:16px}
@media(min-width:900px){
  .header-inner{gap:20px}
  .nav-chips{order:2;width:auto;flex:1;justify-content:center;padding-bottom:0;mask-image:none;overflow:visible}
  .header-actions{order:3;margin-left:0}
}
.link-quiet{font-size:14px;color:var(--ink-600);padding:6px 0;border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease}
.link-quiet:hover{color:var(--brand-700);border-bottom-color:var(--brand-500)}
.link-quiet:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:4px}
@media(max-width:899px){.link-quiet{display:none}}

/* ============ buttons ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--radius-btn);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(22,103,214,.22)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(22,103,214,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(22,103,214,.2)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{background:var(--brand-50);border-color:#CFE0F8;color:var(--brand-700);transform:translateY(-1px)}
.btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.text-link{display:inline-block;color:var(--brand-700);font-size:14px;font-weight:600;border-bottom:2px solid transparent;transition:border-color .2s ease,color .2s ease}
.text-link:hover{border-bottom-color:var(--brand-500)}
.text-link:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:4px}

/* ============ hero ============ */
.hero{background:linear-gradient(180deg,#FFFFFF 0%,var(--brand-50) 100%);border-bottom:1px solid var(--line);padding:44px 0 56px}
.hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media(min-width:960px){.hero{padding:64px 0 72px}.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px}}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--ink-600);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb a:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:4px}
.breadcrumb span[aria-current]{color:var(--ink-400)}
h1{font-size:clamp(30px,4.6vw,50px);line-height:1.15;font-weight:700;letter-spacing:-.01em}
.hero-sub{font-size:17px;color:var(--ink-600);margin-top:18px;max-width:36em}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-note{margin-top:22px;font-size:13px;color:var(--ink-400);padding-left:14px;border-left:2px solid var(--brand-100);line-height:1.7}
.hero-media{position:relative;border-radius:var(--radius-card);overflow:hidden;background:var(--brand-50);border:1px solid var(--line);box-shadow:var(--shadow-card)}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.media-tag{position:absolute;left:18px;bottom:18px;display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:13px;font-weight:600;color:var(--ink-900);box-shadow:0 8px 20px rgba(14,26,43,.10)}
.media-tag::before{content:"";width:8px;height:8px;border-radius:999px;background:var(--accent-500)}

/* ============ sections ============ */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.section + .section{border-top:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:36px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand-700);background:var(--brand-50);border:1px solid #D9E7FB;border-radius:999px;padding:5px 14px;margin-bottom:16px}
h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700}
.section-lead{margin-top:14px;font-size:16px;color:var(--ink-600)}

/* ============ flow ============ */
.flow{margin-top:8px}
.flow-item{display:grid;grid-template-columns:1fr;gap:22px;padding:36px 0;border-bottom:1px solid var(--line)}
.flow-item:last-child{border-bottom:0;padding-bottom:0}
.flow-media{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);background:var(--brand-50)}
.flow-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .2s ease}
.flow-item:hover .flow-media img{transform:scale(1.015)}
.flow-body h3{font-size:20px;line-height:1.4;font-weight:700}
.flow-body p{margin-top:12px;max-width:42em}
.flow-body .text-link{margin-top:14px}
.flow-badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--accent-50);color:var(--accent-500);font-size:12px;font-weight:700;margin-bottom:12px}
@media(min-width:900px){
  .flow-item{grid-template-columns:minmax(0,420px) minmax(0,1fr);gap:52px;align-items:center;padding:48px 0}
  .flow-item:nth-child(even) .flow-media{order:2}
}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:1fr;gap:20px;margin-top:8px}
@media(min-width:640px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,minmax(0,1fr))}}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 22px;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:999px;background:var(--brand-50);border:1px solid #D9E7FB;color:var(--brand-700);font-weight:800;font-size:15px;font-variant-numeric:tabular-nums;margin-bottom:16px}
.step h3{font-size:17px;font-weight:700}
.step p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--ink-600)}

/* ============ resolve ============ */
.resolve{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;box-shadow:var(--shadow-card);overflow:hidden}
.resolve-row{display:grid;grid-template-columns:1fr;gap:10px;padding:22px 24px;border-bottom:1px solid var(--line);transition:background-color .2s ease}
.resolve-row:last-child{border-bottom:0}
.resolve-row:hover{background:var(--brand-50)}
.resolve-title{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;color:var(--ink-900)}
.resolve-title::before{content:"";width:8px;height:8px;border-radius:999px;background:var(--accent-500);flex:0 0 8px}
.resolve-text{font-size:15px;color:var(--ink-600)}
@media(min-width:860px){.resolve-row{grid-template-columns:280px minmax(0,1fr);gap:28px;align-items:start;padding:24px 28px}}

/* ============ faq ============ */
.faq{margin-top:8px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:18px 4px;background:none;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);cursor:pointer;transition:color .2s ease}
.faq-q:hover{color:var(--brand-700)}
.faq-q:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}
.faq-icon{position:relative;width:22px;height:22px;flex:0 0 22px;transition:transform .2s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);border-radius:2px;transform:translate(-50%,-50%)}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a p{padding:0 4px 22px;font-size:15px;color:var(--ink-600);max-width:60em}

/* ============ cta band ============ */
.cta-band{margin:56px 0;background:var(--brand-50);border:1px solid #D9E7FB;border-radius:20px;padding:36px 24px;display:flex;flex-direction:column;gap:22px}
@media(min-width:900px){.cta-band{margin:80px 0;padding:48px 52px;flex-direction:row;align-items:center;justify-content:space-between;gap:40px}}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3}
.cta-band p{margin-top:12px;font-size:15px;color:var(--ink-600);max-width:44em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;flex:0 0 auto}
.privacy-line{font-size:12px;color:var(--ink-400);line-height:1.7;margin-top:16px}
.privacy-line a{color:var(--ink-400);border-bottom:1px solid var(--line)}
.privacy-line a:hover{color:var(--brand-700);border-bottom-color:var(--brand-500)}

/* ============ footer ============ */
.site-footer{background:var(--brand-50);border-top:1px solid var(--line);padding:56px 0 0;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media(min-width:700px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--brand-700);font-size:17px;font-weight:800}
.footer-brand span{color:var(--ink-900)}
.footer-text{margin-top:14px;font-size:14px;color:var(--ink-600);max-width:32em;line-height:1.8}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col li{font-size:14px;color:var(--ink-600);line-height:1.9;margin-bottom:8px}
.footer-col a{transition:color .2s ease,border-color .2s ease;border-bottom:1px solid transparent}
.footer-col a:hover{color:var(--brand-700);border-bottom-color:var(--brand-500)}
.footer-col a:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:4px}
.footer-bottom{margin-top:44px;border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:var(--ink-400)}

/* ============ modal ============ */
.modal{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:20px}
.modal.open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(14,26,43,.45);animation:fade .2s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal-card{position:relative;width:100%;max-width:480px;background:#fff;border-radius:var(--radius-card);padding:30px 26px;box-shadow:0 24px 60px rgba(14,26,43,.24);max-height:90vh;overflow-y:auto;animation:rise .24s ease}
@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.modal-head h3{font-size:20px;font-weight:700}
.modal-head p{margin-top:8px;font-size:13px;color:var(--ink-400)}
.modal-close{position:absolute;right:10px;top:10px;width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border:0;background:none;border-radius:10px;color:var(--ink-400);font-size:20px;line-height:1;cursor:pointer;transition:background-color .2s ease,color .2s ease}
.modal-close:hover{background:var(--brand-50);color:var(--ink-900)}
.modal-close:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.field{display:block;margin-top:16px}
.field > span{display:block;font-size:13px;color:var(--ink-600);margin-bottom:6px}
.req{color:var(--accent-500)}
.control{width:100%;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);padding:0 12px;font-size:15px;font-family:inherit;color:var(--ink-900);background:#fff;transition:border-color .2s ease,box-shadow .2s ease}
.control:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
select.control{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-400) 50%),linear-gradient(135deg,var(--ink-400) 50%,transparent 50%);background-position:calc(100% - 18px) 20px,calc(100% - 13px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.phone-group{display:flex;gap:8px}
.phone-prefix{display:inline-flex;align-items:center;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--bg);color:var(--ink-600);font-size:14px;flex:0 0 auto}
.agree{display:flex;align-items:flex-start;gap:10px;margin-top:18px;font-size:13px;color:var(--ink-600);line-height:1.7}
.agree input{margin-top:4px;width:16px;height:16px;accent-color:var(--brand-600);flex:0 0 16px}
.modal-actions{margin-top:22px}
.modal-actions .btn{width:100%}
.modal-note{margin-top:14px;font-size:12px;color:var(--ink-400);line-height:1.7}
@media(max-width:520px){
  .modal{padding:0;align-items:flex-end}
  .modal-card{max-width:none;border-radius:16px 16px 0 0;animation:slideUp .26s ease}
  @keyframes slideUp{from{transform:translateY(24px);opacity:0}to{transform:translateY(0);opacity:1}}
}
.to-top{position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--brand-700);display:none;align-items:center;justify-content:center;box-shadow:var(--shadow-card);cursor:pointer;z-index:70;transition:transform .2s ease,box-shadow .2s ease}
.to-top.show{display:inline-flex}
.to-top:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover)}
.to-top:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}

/* roulang page: category1 */
:root{
    --brand-700:#0F4FA8;--brand-600:#1667D6;--brand-500:#2C82F0;--brand-100:#E4EEFC;--brand-50:#F2F7FE;
    --accent-500:#FF6A2B;--accent-50:#FFF1E9;
    --ink-900:#0E1A2B;--ink-600:#46586F;--ink-400:#8496AC;
    --line:#E3EAF3;--bg:#F6F9FD;--white:#FFFFFF;--ok:#17A673;
    --radius-card:16px;--radius-img:12px;--radius-btn:10px;--radius-chip:999px;
    --shadow-card:0 2px 8px rgba(14,26,43,.05),0 12px 32px rgba(14,26,43,.06);
    --shadow-hover:0 6px 16px rgba(14,26,43,.08),0 20px 44px rgba(14,26,43,.10);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;background:var(--bg);color:var(--ink-600);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;cursor:pointer;background:none;border:0}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  :focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:768px){.container{padding-left:32px;padding-right:32px}}

  /* ============ header ============ */
  .site-header{position:sticky;top:0;z-index:60;background:var(--white);border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
  .site-header.is-scrolled{box-shadow:0 6px 20px rgba(14,26,43,.07)}
  .site-header .header-inner{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding-top:12px;padding-bottom:12px}
  .logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;color:var(--ink-900);font-size:17px;letter-spacing:-.01em}
  .logo-mark{width:36px;height:36px;flex:0 0 36px;color:var(--brand-600)}
  .logo-text{white-space:nowrap}
  .nav-chips{
    order:3;width:100%;display:flex;gap:8px;align-items:center;
    overflow-x:auto;scroll-snap-type:x proximity;padding:2px 0 12px;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
    mask-image:linear-gradient(to right,#000 88%,transparent 100%);
  }
  .nav-chips::-webkit-scrollbar{display:none}
  .chip{
    position:relative;display:inline-flex;align-items:center;height:36px;padding:0 16px;
    border:1px solid var(--line);background:var(--white);border-radius:var(--radius-chip);
    font-size:14px;color:var(--ink-600);white-space:nowrap;scroll-snap-align:start;
    transition:background .2s ease,border-color .2s ease,color .2s ease;
  }
  .chip:hover{background:var(--brand-50);border-color:#cfe0f7;color:var(--brand-700)}
  .chip.active{background:var(--brand-600);border-color:var(--brand-600);color:#fff}
  .chip.active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:-8px;width:26px;height:2px;background:var(--accent-500);border-radius:2px}
  .header-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
  .link-quiet{font-size:14px;color:var(--ink-600);padding:6px 2px;border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease}
  .link-quiet:hover{color:var(--brand-600);border-color:var(--brand-500)}
  @media (min-width:900px){
    .nav-chips{order:2;width:auto;flex:1 1 auto;justify-content:center;padding-bottom:2px;overflow:visible;mask-image:none}
    .header-actions{order:3}
  }

  /* ============ buttons ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--radius-btn);padding:12px 22px;font-size:15px;font-weight:600;
    border:1px solid transparent;min-height:44px;
    transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 4px 14px rgba(22,103,214,.22)}
  .btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 10px 24px rgba(15,79,168,.26)}
  .btn-primary:active{transform:translateY(0);box-shadow:0 4px 14px rgba(22,103,214,.22)}
  .btn-ghost{background:#fff;color:var(--ink-900);border-color:var(--line)}
  .btn-ghost:hover{background:var(--brand-50);border-color:#cfe0f7}
  .btn-sm{padding:9px 16px;font-size:14px;min-height:40px}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);border-bottom:2px solid transparent;transition:border-color .2s ease,color .2s ease}
  .link-arrow:hover{border-color:var(--brand-500);color:var(--brand-700)}

  /* ============ hero ============ */
  .hero{padding:48px 0 52px;background:linear-gradient(180deg,#fff 0%,var(--brand-50) 100%);border-bottom:1px solid var(--line)}
  .hero-grid{display:grid;gap:36px;align-items:center;grid-template-columns:1fr}
  .hero-title{font-size:clamp(30px,4.6vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.01em;color:var(--ink-900)}
  .hero-sub{margin-top:16px;font-size:17px;color:var(--ink-600);max-width:640px}
  .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  .hero-note{margin-top:14px;font-size:13px;line-height:1.6;color:var(--ink-400)}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:22px;font-size:13px;color:var(--ink-400)}
  .breadcrumb a{color:var(--ink-400);transition:color .2s ease}
  .breadcrumb a:hover{color:var(--brand-600)}
  .breadcrumb .current{color:var(--ink-600)}
  .hero-visual{position:relative}
  .hero-visual img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-card)}
  .hero-float{
    position:absolute;left:16px;right:16px;bottom:16px;background:rgba(255,255,255,.94);
    border:1px solid var(--line);border-radius:14px;padding:14px 16px;display:grid;gap:8px;
    box-shadow:0 8px 26px rgba(14,26,43,.10);
  }
  .hero-float-item{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-600)}
  .hero-dot{width:20px;height:20px;border-radius:50%;background:var(--brand-600);color:#fff;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:0 0 20px;font-variant-numeric:tabular-nums}
  @media (min-width:900px){
    .hero{padding:64px 0 72px}
    .hero-grid{grid-template-columns:1.05fr .95fr;gap:52px}
  }

  /* ============ sections ============ */
  .section{padding:56px 0;border-bottom:1px solid var(--line)}
  .section:last-of-type{border-bottom:0}
  @media (min-width:900px){.section{padding:80px 0}}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
  .section-title{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--ink-900)}
  .section-desc{margin-top:10px;font-size:15px;color:var(--ink-600);max-width:700px}

  /* filter bar */
  .filter-bar{
    display:flex;gap:10px;align-items:center;flex-wrap:nowrap;overflow-x:auto;
    padding:12px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-chip);
    box-shadow:0 2px 8px rgba(14,26,43,.04);scrollbar-width:none;
  }
  .filter-bar::-webkit-scrollbar{display:none}
  .filter-item{
    display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:var(--radius-chip);
    border:1px solid var(--line);background:#fff;color:var(--ink-600);font-size:14px;white-space:nowrap;
    transition:background .2s ease,border-color .2s ease,color .2s ease;
  }
  .filter-item:hover{background:var(--brand-50);border-color:#cfe0f7;color:var(--brand-700)}
  .filter-item.is-on{background:var(--brand-600);border-color:var(--brand-600);color:#fff}

  /* cards */
  .card-grid{display:grid;gap:24px;grid-template-columns:1fr}
  @media (min-width:768px){.card-grid{grid-template-columns:repeat(2,1fr)}}
  .card{
    display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
    border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#d5e4f7}
  .card-media{position:relative;background:var(--brand-50)}
  .card-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
  .card-tag{
    position:absolute;top:12px;left:12px;font-size:13px;padding:4px 10px;border-radius:var(--radius-chip);
    background:var(--accent-50);color:var(--accent-500);border:1px solid #ffd9c4;font-weight:600;
  }
  .card-body{padding:22px;display:flex;flex-direction:column;gap:14px;flex:1}
  .card-title{font-size:20px;line-height:1.4;font-weight:700;color:var(--ink-900)}
  .points{display:grid;gap:10px}
  .points li{position:relative;padding-left:18px;font-size:15px;line-height:1.7}
  .points li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--brand-500)}
  .card-foot{margin-top:auto;padding-top:6px}

  /* split block */
  .split{display:grid;gap:32px;align-items:center;grid-template-columns:1fr}
  @media (min-width:900px){.split{grid-template-columns:1fr 1fr;gap:56px}}
  .split img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-img);box-shadow:var(--shadow-card)}
  .steps{display:grid;gap:14px;margin-top:22px}
  .step-row{display:flex;gap:16px;padding:16px;background:#fff;border:1px solid var(--line);border-radius:14px;transition:box-shadow .2s ease,transform .2s ease}
  .step-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-card)}
  .step-num{
    flex:0 0 36px;width:36px;height:36px;border-radius:10px;background:var(--brand-50);color:var(--brand-600);
    display:flex;align-items:center;justify-content:center;font-weight:800;font-variant-numeric:tabular-nums;
  }
  .step-row h3{font-size:16px;font-weight:700;color:var(--ink-900);margin-bottom:4px}
  .step-row p{font-size:14px;line-height:1.7}

  /* checklist rows */
  .row-list{border-top:1px solid var(--line)}
  .row-item{display:flex;gap:18px;align-items:flex-start;padding:22px 0;border-bottom:1px solid var(--line);transition:background .2s ease}
  .row-index{flex:0 0 44px;font-size:19px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1.5}
  .row-item h3{font-size:18px;font-weight:700;color:var(--ink-900);margin-bottom:6px}
  .row-item p{font-size:15px;line-height:1.75;max-width:760px}
  .pill{display:inline-flex;align-items:center;font-size:13px;padding:4px 10px;border-radius:var(--radius-chip);background:var(--brand-50);color:var(--brand-600);border:1px solid #d9e7fa;margin-top:10px}

  /* CTA band */
  .cta-band{
    background:var(--brand-50);border:1px solid #d9e7fa;border-radius:20px;padding:32px 24px;
    display:grid;gap:24px;align-items:center;grid-template-columns:1fr;
  }
  .cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;color:var(--ink-900)}
  .cta-band p{margin-top:10px;font-size:15px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
  @media (min-width:900px){.cta-band{grid-template-columns:1.5fr auto;padding:44px 48px}}

  /* FAQ */
  .faq-wrap{max-width:900px}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
  .faq-item:hover{border-color:#d5e4f7}
  .faq-item.open{box-shadow:var(--shadow-card)}
  .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 22px;min-height:56px;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900)}
  .faq-plus{position:relative;flex:0 0 20px;width:20px;height:20px;transition:transform .25s ease}
  .faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px}
  .faq-plus::before{left:0;top:9px;width:20px;height:2px}
  .faq-plus::after{left:9px;top:0;width:2px;height:20px}
  .faq-item.open .faq-plus{transform:rotate(45deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
  .faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.8}

  /* modal */
  .modal-mask{position:fixed;inset:0;z-index:90;display:none;align-items:center;justify-content:center;padding:20px;background:rgba(14,26,43,.45)}
  .modal-mask.open{display:flex}
  .modal{position:relative;width:100%;max-width:480px;max-height:90vh;overflow:auto;background:#fff;border-radius:16px;padding:28px;box-shadow:0 24px 60px rgba(14,26,43,.24)}
  .modal h2{font-size:20px;font-weight:700;color:var(--ink-900);padding-right:44px}
  .modal-close{position:absolute;top:12px;right:12px;width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--ink-400);transition:background .2s ease,color .2s ease}
  .modal-close:hover{background:var(--brand-50);color:var(--brand-600)}
  .form-grid{display:grid;gap:16px;margin-top:22px}
  .field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:8px}
  .req{color:var(--accent-500)}
  .control{display:flex;align-items:center;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;transition:border-color .2s ease,box-shadow .2s ease}
  .control:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
  .control .prefix{padding:0 12px;font-size:14px;color:var(--ink-400);border-right:1px solid var(--line);line-height:44px}
  .control input,.control select{width:100%;height:100%;border:0;outline:none;background:transparent;padding:0 14px;font-size:15px;color:var(--ink-900);border-radius:10px}
  .control select{cursor:pointer}
  .check{display:flex;gap:10px;align-items:flex-start;font-size:13px;line-height:1.6;color:var(--ink-600)}
  .check input{width:18px;height:18px;margin-top:2px;accent-color:var(--brand-600)}
  .privacy{font-size:12px;line-height:1.6;color:var(--ink-400)}
  .privacy a{color:var(--brand-600);border-bottom:1px solid #cfe0f7}
  @media (max-width:640px){
    .modal-mask{align-items:flex-end;padding:0}
    .modal{max-width:none;border-radius:16px 16px 0 0;padding:24px 20px 28px}
  }

  /* footer */
  .site-footer{background:var(--brand-50);border-top:1px solid var(--line);padding:56px 0 24px}
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
  .footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--ink-900)}
  .footer-text{margin-top:12px;font-size:14px;line-height:1.8;max-width:340px}
  .footer-col h4{font-size:14px;font-weight:700;color:var(--ink-900);margin-bottom:14px}
  .footer-col ul{display:grid;gap:10px;font-size:14px}
  .footer-col a{transition:color .2s ease}
  .footer-col a:hover{color:var(--brand-600)}
  .footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;border-top:1px solid #dbe6f4;margin-top:40px;padding-top:20px;font-size:13px;color:var(--ink-400)}
  @media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}

  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* roulang page: category3 */
:root{
    --brand-700:#0F4FA8; --brand-600:#1667D6; --brand-500:#2C82F0; --brand-100:#E4EEFC; --brand-50:#F2F7FE;
    --accent-500:#FF6A2B; --accent-50:#FFF1E9;
    --ink-900:#0E1A2B; --ink-600:#46586F; --ink-400:#8496AC;
    --line:#E3EAF3; --bg:#F6F9FD; --white:#FFFFFF; --ok:#17A673;
    --radius-card:16px; --radius-img:12px; --radius-btn:10px;
    --shadow-card:0 2px 8px rgba(14,26,43,.05), 0 12px 32px rgba(14,26,43,.06);
    --shadow-hover:0 6px 16px rgba(14,26,43,.08), 0 18px 40px rgba(14,26,43,.10);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;line-height:1.85;color:var(--ink-600);background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em}
  p{margin:0}
  a{color:inherit;text-decoration:none}
  ul,ol{margin:0;padding:0;list-style:none}
  img{max-width:100%;display:block}
  button,input,select,textarea{font:inherit;color:inherit}
  :focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}
  .num{font-variant-numeric:tabular-nums}

  /* 容器与板块 */
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){ .container{padding:0 32px} }
  .section{padding:56px 0}
  @media (min-width:768px){ .section{padding:88px 0} }
  .section-line{border-top:1px solid var(--line)}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
  .section-title{font-size:clamp(24px,3vw,34px);line-height:1.25}
  .section-sub{margin-top:10px;font-size:15px;color:var(--ink-400);max-width:640px}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--brand-600);font-weight:600;letter-spacing:.06em}
  .eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-500);border-radius:2px}

  /* 头部导航 */
  .site-header{
    position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
    -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);transition:box-shadow .2s ease;
  }
  .site-header.scrolled{box-shadow:0 6px 20px rgba(14,26,43,.06)}
  .header-inner{display:flex;align-items:center;gap:18px;min-height:68px}
  .logo{display:inline-flex;align-items:center;gap:10px;color:var(--brand-700);font-weight:700;font-size:17px;white-space:nowrap;flex:none}
  .logo-mark{width:34px;height:34px;flex:none;color:var(--brand-600)}
  .nav-chips{display:flex;align-items:center;gap:8px;margin-left:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;scroll-snap-type:x proximity}
  .nav-chips::-webkit-scrollbar{display:none}
  .chip{
    position:relative;display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;
    border:1px solid var(--line);background:var(--white);color:var(--ink-600);font-size:14px;white-space:nowrap;
    scroll-snap-align:start;transition:background .2s ease,color .2s ease,border-color .2s ease;
  }
  .chip:hover{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700)}
  .chip.active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;font-weight:600}
  .chip.active::after{content:"";position:absolute;left:50%;bottom:5px;transform:translateX(-50%);width:18px;height:2px;border-radius:2px;background:var(--accent-500)}
  .header-actions{margin-left:auto;display:flex;align-items:center;gap:14px;flex:none}

  /* 按钮与链接 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;
    border-radius:var(--radius-btn);padding:12px 22px;font-size:15px;font-weight:600;cursor:pointer;
    transition:transform .2s ease,background .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
  }
  .btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(22,103,214,.20)}
  .btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 12px 24px rgba(22,103,214,.26)}
  .btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(22,103,214,.18)}
  .btn-secondary{background:#fff;border-color:var(--line);color:var(--ink-900)}
  .btn-secondary:hover{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700)}
  .btn-sm{padding:9px 16px;font-size:14px}
  .link-quiet{font-size:14px;color:var(--ink-600);border-bottom:2px solid transparent;padding-bottom:2px;transition:color .2s ease,border-color .2s ease}
  .link-quiet:hover{color:var(--brand-700);border-bottom-color:var(--brand-100)}
  .text-link{color:var(--brand-700);font-weight:600;border-bottom:2px solid var(--brand-100);transition:border-color .2s ease,color .2s ease}
  .text-link:hover{border-bottom-color:var(--brand-600);color:var(--brand-600)}

  /* 面包屑 */
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400)}
  .breadcrumb a:hover{color:var(--brand-600)}
  .breadcrumb .sep{color:var(--line)}

  /* 首屏 */
  .page-hero{padding:36px 0 0}
  .page-title{font-size:clamp(30px,4.6vw,52px);line-height:1.15;font-weight:700;margin-top:16px}
  .page-lead{margin-top:14px;font-size:16px;color:var(--ink-600);max-width:720px}

  /* 横幅 */
  .banner{position:relative;margin-top:30px;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--brand-50)}
  .banner img{width:100%;height:280px;object-fit:cover}
  .banner-caption{position:absolute;left:0;right:0;bottom:0;padding:22px 26px;background:linear-gradient(180deg,rgba(14,26,43,0) 0%,rgba(14,26,43,.74) 100%)}
  .banner-caption strong{display:block;color:#fff;font-size:20px;font-weight:700;letter-spacing:-.01em}
  .banner-caption span{display:block;color:rgba(255,255,255,.82);font-size:13px;margin-top:4px}
  @media (max-width:640px){ .banner img{height:200px} .banner-caption{padding:16px 18px} }

  /* 编号清单 */
  .step-list{border-top:1px solid var(--line)}
  .step-row{
    display:grid;grid-template-columns:96px 1fr;gap:24px;padding:30px 0;border-bottom:1px solid var(--line);
    transition:background .2s ease,transform .2s ease;
  }
  .step-row:hover{background:var(--white)}
  .step-num{font-size:38px;line-height:1;font-weight:800;color:var(--brand-100);letter-spacing:-.02em}
  .step-row:hover .step-num{color:var(--brand-500)}
  .step-title{font-size:20px;line-height:1.4}
  .step-desc{margin-top:10px;font-size:15px;max-width:760px}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
  .tag{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;font-size:13px;background:var(--brand-50);color:var(--brand-600);border:1px solid var(--brand-100)}
  .tag-accent{background:var(--accent-50);color:var(--accent-500);border-color:#FFDFCE}
  @media (max-width:640px){
    .step-row{grid-template-columns:1fr;gap:10px;padding:24px 0}
    .step-num{font-size:30px}
  }

  /* 卡片与网格 */
  .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease}
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
  .card-pad{padding:24px}
  .card img{border-radius:var(--radius-img);width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--brand-50)}
  .card-title{font-size:18px;line-height:1.4;margin-top:16px}

  /* 时间线 */
  .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
  .tl-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px 20px;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease}
  .tl-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
  .tl-dot{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--brand-50);color:var(--brand-700);font-weight:800;font-size:14px;border:1px solid var(--brand-100)}
  .tl-item h3{margin-top:14px;font-size:17px}
  .tl-item p{margin-top:8px;font-size:14px;color:var(--ink-600)}
  @media (max-width:1023px){ .timeline{grid-template-columns:repeat(2,1fr)} }
  @media (max-width:520px){ .timeline{grid-template-columns:1fr} }

  /* 自查清单 */
  .check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
  .check-item{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:18px 20px;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease}
  .check-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
  .check-icon{flex:none;width:24px;height:24px;border-radius:50%;background:var(--brand-50);color:var(--ok);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;border:1px solid var(--brand-100)}
  .check-item h3{font-size:16px}
  .check-item p{font-size:14px;margin-top:6px}
  @media (max-width:767px){ .check-grid{grid-template-columns:1fr} }

  /* 提示列表 */
  .tip-list{background:var(--accent-50);border:1px solid #FFE2D2;border-radius:var(--radius-card);padding:8px 24px}
  .tip-row{display:flex;gap:14px;align-items:flex-start;padding:18px 0;border-bottom:1px solid #FFE2D2}
  .tip-row:last-child{border-bottom:0}
  .tip-mark{flex:none;width:8px;height:8px;border-radius:50%;background:var(--accent-500);margin-top:10px}
  .tip-row h3{font-size:16px}
  .tip-row p{font-size:14px;margin-top:4px;color:var(--ink-600)}

  /* FAQ */
  .faq-list{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;overflow:hidden;box-shadow:var(--shadow-card)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:last-child{border-bottom:0}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;
    padding:16px 22px;background:transparent;border:0;cursor:pointer;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);
    transition:background .2s ease,color .2s ease;
  }
  .faq-q:hover{background:var(--brand-50);color:var(--brand-700)}
  .faq-plus{flex:none;width:22px;height:22px;position:relative;transition:transform .2s ease}
  .faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px}
  .faq-plus::before{left:50%;top:4px;width:2px;height:14px;transform:translateX(-50%)}
  .faq-plus::after{top:50%;left:4px;height:2px;width:14px;transform:translateY(-50%)}
  .faq-item.open .faq-plus{transform:rotate(45deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
  .faq-a-inner{padding:0 22px 20px;font-size:15px;color:var(--ink-600);max-width:820px}

  /* CTA */
  .cta-band{background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--radius-card);padding:34px 28px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
  .cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3}
  .cta-band p{margin-top:10px;font-size:15px;max-width:640px}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap}

  /* 页脚 */
  .site-footer{background:var(--brand-50);border-top:1px solid var(--line);margin-top:8px;padding:52px 0 0}
  .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:32px}
  .footer-brand{display:flex;align-items:center;gap:10px;color:var(--brand-700);font-weight:700;font-size:17px}
  .footer-brand .logo-mark{width:30px;height:30px}
  .footer-text{margin-top:14px;font-size:14px;color:var(--ink-600);max-width:340px}
  .footer-col h4{font-size:15px;margin-bottom:14px;color:var(--ink-900)}
  .footer-col li{font-size:14px;color:var(--ink-600);margin-bottom:10px}
  .footer-col a{border-bottom:2px solid transparent;padding-bottom:1px;transition:color .2s ease,border-color .2s ease}
  .footer-col a:hover{color:var(--brand-700);border-bottom-color:var(--brand-100)}
  .footer-bottom{margin-top:40px;padding:20px 0;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--ink-400)}
  @media (max-width:1023px){ .footer-grid{grid-template-columns:1fr 1fr} }
  @media (max-width:640px){ .footer-grid{grid-template-columns:1fr;gap:26px} .site-footer{padding-top:40px} }

  /* 表单弹层 */
  .modal-mask{
    position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:20px;
    background:rgba(14,26,43,.45);opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
  }
  .modal-mask.open{opacity:1;visibility:visible}
  .modal-panel{
    position:relative;width:100%;max-width:480px;background:#fff;border-radius:16px;padding:28px;
    box-shadow:0 24px 60px rgba(14,26,43,.24);transform:translateY(12px);transition:transform .2s ease;
    max-height:90vh;overflow-y:auto;
  }
  .modal-mask.open .modal-panel{transform:translateY(0)}
  .modal-panel h3{font-size:20px}
  .modal-close{
    position:absolute;top:8px;right:8px;width:40px;height:40px;border:0;background:transparent;cursor:pointer;
    border-radius:10px;color:var(--ink-400);font-size:22px;line-height:1;display:flex;align-items:center;justify-content:center;
    transition:background .2s ease,color .2s ease;
  }
  .modal-close:hover{background:var(--brand-50);color:var(--brand-700)}
  .lead-form{margin-top:18px;display:grid;gap:16px}
  .lead-form label{display:block;font-size:14px;color:var(--ink-900);font-weight:600}
  .lead-form .req{color:var(--accent-500)}
  .lead-form input[type="text"],.lead-form input[type="tel"],.lead-form select{
    width:100%;height:44px;margin-top:8px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:#fff;
    font-size:15px;color:var(--ink-900);transition:border-color .2s ease,box-shadow .2s ease;
  }
  .lead-form input::placeholder{color:var(--ink-400);font-weight:400}
  .lead-form input:focus,.lead-form select:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
  .phone-wrap{position:relative;display:block}
  .phone-wrap .prefix{position:absolute;left:14px;top:8px;height:44px;display:flex;align-items:center;font-size:15px;color:var(--ink-400);pointer-events:none}
  .phone-wrap input[type="tel"]{padding-left:56px}
  .checkbox-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;font-weight:400;color:var(--ink-600);line-height:1.6}
  .checkbox-row input{width:18px;height:18px;margin-top:3px;flex:none;accent-color:var(--brand-600)}
  .w-100{width:100%}
  .privacy{font-size:12px;color:var(--ink-400)}
  .privacy a{color:var(--brand-600);border-bottom:1px solid var(--brand-100)}
  @media (max-width:640px){
    .modal-mask{align-items:flex-end;padding:0}
    .modal-panel{max-width:100%;border-radius:16px 16px 0 0;transform:translateY(24px)}
  }

  /* 移动端导航 */
  @media (max-width:767px){
    .header-inner{flex-wrap:wrap;row-gap:10px;padding-top:10px;padding-bottom:10px;gap:12px}
    .logo{order:1}
    .header-actions{order:2;margin-left:auto;gap:10px}
    .header-actions .link-quiet{display:none}
    .nav-chips{order:3;flex:0 0 100%;margin-left:0;padding-bottom:4px;
      -webkit-mask-image:linear-gradient(90deg,#000 0,#000 88%,rgba(0,0,0,0) 100%);
      mask-image:linear-gradient(90deg,#000 0,#000 88%,rgba(0,0,0,0) 100%);
    }
    .logo-text{font-size:16px}
  }
  @media (max-width:520px){
    .page-hero{padding-top:24px}
    .btn{padding:11px 18px;font-size:14px}
  }