/* roulang page: index */
:root{
  --brand-900:#0E2C4A;
  --brand-700:#16528E;
  --brand-600:#12467A;
  --brand-500:#3A7CBE;
  --brand-100:#E6EFF8;
  --accent:#D98B3A;
  --ink:#12212E;
  --ink-2:#43535F;
  --ink-3:#7A8A96;
  --line:#E3EAF1;
  --bg:#F6F9FC;
  --white:#FFFFFF;
  --success:#1F8A6B;
  --warn:#C8781F;
  --error:#C0392B;
  --r-sm:8px;
  --r:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,33,46,.06);
  --sh-2:0 10px 28px -12px rgba(16,60,104,.18);
  --sh-3:0 18px 40px -16px rgba(16,60,104,.28);
  --container:1200px;
  --font: "PingFang SC","Microsoft YaHei","Source Han Sans SC","思源黑体",system-ui,-apple-system,"Segoe UI",Inter,Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;letter-spacing:.02em;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out, border-color .18s ease-out, background-color .18s ease-out;}
a:visited{color:inherit;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:4px;}
::selection{background:var(--brand-100);color:var(--brand-700);}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section-head{max-width:820px;margin-bottom:40px;}
.section-head h2{font-size:28px;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--ink-2);max-width:760px;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--brand-700);
  background:var(--brand-100);border-radius:var(--r-pill);
  padding:5px 12px;margin-bottom:18px;font-weight:500;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-700);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(10px);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.site-nav{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand__dot{width:8px;height:8px;border-radius:2px;background:var(--brand-700);display:inline-block;}
.brand__text{display:flex;flex-direction:column;line-height:1.2;}
.brand__name{font-size:18px;font-weight:600;color:var(--ink);letter-spacing:.02em;}
.brand__sub{font-size:11px;color:var(--ink-3);letter-spacing:.16em;}
.nav-links{display:flex;align-items:center;gap:36px;}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--brand-700);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease-out;
}
.nav-links a:hover{color:var(--brand-700);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);}
.nav-links a.is-active::after{transform:scaleX(1);height:2px;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.btn-nav{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  color:var(--brand-700);font-size:14px;font-weight:500;background:var(--white);
  transition:all .18s ease-out;
}
.btn-nav:hover{border-color:var(--brand-500);background:var(--brand-100);}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:var(--r-sm);
}
.nav-toggle span{display:block;width:20px;height:1.5px;background:var(--ink);margin:3px 0;transition:transform .2s ease-out,opacity .2s ease-out;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(4.5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-4.5px) rotate(-45deg);}
.mobile-panel{
  display:none;position:fixed;inset:72px 0 0 0;background:var(--white);z-index:70;
  padding:8px 24px 24px;overflow-y:auto;
}
.mobile-panel.is-open{display:flex;flex-direction:column;}
.mobile-panel a{
  display:flex;align-items:center;min-height:56px;font-size:20px;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mobile-panel a.is-active{color:var(--brand-700);}
.mobile-panel .btn-primary{margin-top:24px;width:100%;justify-content:center;}
body.no-scroll{overflow:hidden;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r);
  font-size:15px;font-weight:500;letter-spacing:.02em;
  transition:transform .18s ease-out, box-shadow .18s ease-out, background-color .18s ease-out, border-color .18s ease-out;
  border:1px solid transparent;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-600);box-shadow:var(--sh-2);transform:translateY(-1px);color:#fff;}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-1);}
.btn-ghost{background:var(--white);border-color:var(--line);color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 标签 / 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:12px;font-weight:500;padding:4px 10px;border-radius:var(--r-pill);
  letter-spacing:.02em;white-space:nowrap;
}
.badge--success{background:rgba(31,138,107,.1);color:var(--success);}
.badge--warn{background:rgba(200,120,31,.12);color:var(--warn);}

/* ============ Hero ============ */
.hero{padding:76px 0 88px;position:relative;overflow:hidden;}
.hero__grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero h1{font-size:40px;line-height:1.28;margin-bottom:20px;letter-spacing:.01em;}
.hero h1 em{font-style:normal;color:var(--brand-700);}
.hero__lead{font-size:17px;color:var(--ink-2);max-width:600px;margin-bottom:32px;}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero__trust{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:13.5px;color:var(--ink-3);}
.hero__trust span{display:inline-flex;align-items:center;gap:8px;}
.hero__trust span+span::before{
  content:"";display:inline-block;width:1px;height:12px;background:var(--line);margin-right:18px;
}
.hero__visual{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);background:var(--brand-100);}
.hero__visual img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero__visual::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(230,239,248,.28),rgba(14,44,74,.28));
  pointer-events:none;
}
.hero__visual-tag{
  position:absolute;left:18px;bottom:18px;z-index:2;
  background:rgba(255,255,255,.94);border-radius:var(--r);padding:10px 14px;
  font-size:13px;color:var(--ink);box-shadow:var(--sh-1);
}
.hero__visual-tag b{display:block;font-size:15px;color:var(--brand-700);font-weight:600;}

/* ============ 数据条 ============ */
.metrics{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--white);}
.metrics__grid{display:grid;grid-template-columns:repeat(4,1fr);}
.metric{padding:32px 24px;border-right:1px solid var(--line);}
.metric:last-child{border-right:none;}
.metric__num{font-size:30px;font-weight:600;color:var(--brand-700);line-height:1.2;letter-spacing:.01em;}
.metric__label{font-size:14px;color:var(--ink-2);margin-top:6px;}
.metric__note{font-size:13px;color:var(--ink-3);margin-top:4px;}

/* ============ 三步上手 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;}
.step-card{
  position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 26px 30px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out, box-shadow .18s ease-out, border-color .18s ease-out;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(22,82,142,.2);}
.step-card__num{
  font-size:22px;font-weight:600;color:var(--accent);letter-spacing:.06em;
  display:block;margin-bottom:16px;
}
.step-card__line{
  display:block;height:1px;width:100%;background:repeating-linear-gradient(90deg,var(--line) 0 8px,transparent 8px 16px);
  margin:0 0 16px;
}
.step-card h3{font-size:18px;margin-bottom:10px;}
.step-card p{font-size:14px;color:var(--ink-2);line-height:1.7;}
.steps__connector{
  position:absolute;top:52px;left:0;right:0;height:1px;z-index:0;
  background:repeating-linear-gradient(90deg,var(--line) 0 10px,transparent 10px 20px);
}
.steps > .step-card{position:relative;z-index:1;}

/* ============ 能力区块 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(22,82,142,.2);}
.card__icon{
  width:42px;height:42px;border-radius:var(--r-sm);background:var(--brand-100);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--brand-700);
}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{font-size:15px;color:var(--ink-2);}
.card ul{margin-top:16px;border-top:1px solid var(--line);padding-top:14px;}
.card ul li{
  font-size:14px;color:var(--ink-2);padding-left:20px;position:relative;margin-bottom:8px;
}
.card ul li:last-child{margin-bottom:0;}
.card ul li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--brand-500);
}
.card--media{padding:0;overflow:hidden;}
.card--media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.card--media .card__body{padding:24px 26px 28px;}

/* ============ 案例证明 ============ */
.proof{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch;}
.quote-block{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:36px;box-shadow:var(--sh-1);display:flex;flex-direction:column;justify-content:space-between;
  position:relative;overflow:hidden;
}
.quote-block::before{
  content:"“";position:absolute;right:24px;top:6px;font-size:120px;line-height:1;color:var(--brand-100);
  font-family:Georgia,serif;
}
.quote-block p{font-size:20px;line-height:1.7;color:var(--ink);font-weight:500;position:relative;z-index:1;}
.quote-block footer{margin-top:28px;padding-top:20px;border-top:1px solid var(--line);font-size:14px;color:var(--ink-3);}
.proof__side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.stat-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);display:flex;flex-direction:column;justify-content:center;gap:6px;
}
.stat-card__num{font-size:32px;font-weight:600;color:var(--brand-700);line-height:1.2;}
.stat-card__label{font-size:14px;color:var(--ink-2);}
.proof__more{margin-top:28px;font-size:15px;}
.link-arrow{
  color:var(--brand-700);border-bottom:1px solid var(--brand-500);padding-bottom:2px;
  display:inline-flex;align-items:center;gap:6px;
}
.link-arrow:hover{color:var(--brand-500);border-bottom-width:2px;}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(22,82,142,.2);}
.news-card__link{display:block;height:100%;}
.news-card__media{background:var(--brand-100);}
.news-card__media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.news-card__body{padding:22px 24px 26px;}
.news-card__title{
  font-size:17.5px;margin:12px 0 10px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__excerpt{
  font-size:14px;color:var(--ink-2);line-height:1.7;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__time{font-size:13px;color:var(--ink-3);}
.empty-state{
  background:var(--brand-100);border-radius:var(--r-lg);padding:64px 24px;text-align:center;
  color:var(--brand-700);
}
.empty-state svg{margin:0 auto 14px;}
.empty-state p{font-size:15px;margin-bottom:20px;color:var(--ink-2);}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:16.5px;font-weight:600;color:var(--ink);text-align:left;
  transition:color .18s ease-out;
}
.faq-item__q:hover{color:var(--brand-700);}
.faq-item__icon{flex-shrink:0;color:var(--brand-700);transition:transform .2s ease-out;}
.faq-item.is-open .faq-item__icon{transform:rotate(45deg);}
.faq-item__a{display:none;padding:0 4px 24px;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:820px;}
.faq-item.is-open .faq-item__a{display:block;}

/* ============ CTA 表单 ============ */
.cta-band{background:var(--brand-100);}
.cta-band__grid{display:grid;grid-template-columns:6fr 5fr;gap:56px;align-items:center;}
.cta-band h2{font-size:28px;margin-bottom:14px;}
.cta-band__points{margin-top:24px;display:grid;gap:10px;}
.cta-band__points li{font-size:15px;color:var(--ink-2);padding-left:24px;position:relative;}
.cta-band__points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--white);border:2px solid var(--brand-500);
}
.form-card{background:var(--white);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-2);border:1px solid var(--line);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:8px;}
.field label .req{color:var(--error);margin-left:2px;}
.field input{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r);
  background:var(--white);color:var(--ink);font-size:15px;
  transition:border-color .18s ease-out, box-shadow .18s ease-out;
}
.field input::placeholder{color:var(--ink-3);}
.field input:focus{
  outline:none;border-color:var(--brand-700);box-shadow:0 0 0 4px rgba(22,82,142,.12);
}
.field.has-error input{border-color:var(--error);}
.field__error{display:none;font-size:13px;color:var(--error);margin-top:6px;}
.field.has-error .field__error{display:block;}
.form-card .btn-primary{width:100%;margin-top:8px;}
.form-note{font-size:13px;color:var(--ink-3);margin-top:14px;}
.alert{display:none;border-radius:var(--r);padding:12px 16px;font-size:14px;margin-bottom:16px;}
.alert.is-show{display:block;}
.alert--success{background:rgba(31,138,107,.08);color:var(--success);}
.alert--error{background:rgba(192,57,43,.08);color:var(--error);}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.68);padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand__name{color:#fff;}
.footer-brand .brand__sub{color:rgba(255,255,255,.5);}
.site-footer p{font-size:14px;line-height:1.8;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.04em;}
.footer-list li{margin-bottom:12px;}
.footer-list a{font-size:14px;color:rgba(255,255,255,.68);}
.footer-list a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:24px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-links{gap:24px;}
  .hero h1{font-size:34px;}
  .proof{grid-template-columns:1fr;}
  .proof__side{grid-template-rows:none;grid-template-columns:1fr 1fr;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .nav-links{display:none;}
  .nav-actions .btn-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero__grid{grid-template-columns:1fr;gap:40px;}
  .hero{padding:56px 0 64px;}
  .hero h1{font-size:31px;}
  .metrics__grid{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(2){border-right:none;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line);}
  .steps{grid-template-columns:1fr;gap:16px;}
  .steps__connector{display:none;}
  .step-card{border-radius:var(--r-lg);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .cta-band__grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:23px;}
  .hero h1{font-size:27px;}
  .hero__lead{font-size:16px;}
  .hero__cta .btn{width:100%;}
  .hero__trust{gap:10px;flex-direction:column;align-items:flex-start;}
  .hero__trust span+span::before{display:none;}
  .metrics__grid{grid-template-columns:1fr;}
  .metric{border-right:none;border-bottom:1px solid var(--line);}
  .metric:last-child{border-bottom:none;}
  .grid-3,.grid-2,.news-grid,.proof__side{grid-template-columns:1fr;}
  .quote-block{padding:26px;}
  .quote-block p{font-size:17px;}
  .cta-band h2{font-size:23px;}
  .form-card{padding:24px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:12px;}
}
@media (max-width:479px){
  .hero h1{font-size:24px;}
  .metric__num{font-size:26px;}
  .stat-card__num{font-size:28px;}
  .btn{height:46px;padding:0 20px;}
}

/* roulang page: article */
:root{
  --brand-900:#0E2C4A;
  --brand-700:#16528E;
  --brand-700-dark:#12467A;
  --brand-500:#3A7CBE;
  --brand-100:#E6EFF8;
  --accent:#D98B3A;
  --ink:#12212E;
  --ink-2:#43535F;
  --ink-3:#7A8A96;
  --line:#E3EAF1;
  --bg:#F6F9FC;
  --white:#FFFFFF;
  --success:#1F8A6B;
  --warn:#C8781F;
  --error:#C0392B;
  --r-sm:8px;
  --r:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,33,46,.06);
  --sh-2:0 10px 28px -12px rgba(16,60,104,.18);
  --sh-3:0 18px 40px -16px rgba(16,60,104,.28);
  --font: "PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;}
a:hover{color:var(--brand-500);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(10px);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.site-nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand__dot{
  width:6px;height:6px;border-radius:2px;
  background:var(--brand-700);
  flex:0 0 auto;
  margin-top:2px;
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{font-size:18px;font-weight:600;letter-spacing:.02em;color:var(--ink);}
.brand__sub{font-size:10px;letter-spacing:.18em;color:var(--ink-3);margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:36px;}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--ink-2);
  padding:6px 0;
  border-bottom:1px solid transparent;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:var(--brand-700);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease-out;
}
.nav-links a:hover{color:var(--brand-700);border-bottom-color:var(--brand-700);}
.nav-links a:hover::after{transform:scaleX(0);}
.nav-links a.is-active{color:var(--ink);}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:16px;}
.btn-nav{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 20px;border-radius:var(--r-pill);
  border:1px solid var(--brand-700);color:var(--brand-700);
  font-size:14px;font-weight:500;background:var(--white);
  transition:background-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.btn-nav:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);}
.nav-toggle{display:none;width:44px;height:44px;position:relative;}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:1.5px;background:var(--ink);
  transition:transform .18s ease-out,opacity .18s ease-out;
}
.nav-toggle span:nth-child(1){top:17px;}
.nav-toggle span:nth-child(2){top:23px;}
.nav-toggle span:nth-child(3){top:29px;}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg);}
body.nav-open .nav-toggle span:nth-child(2){opacity:0;}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 文章头部 ---------- */
.article-hero{
  background:var(--white);
  border-bottom:1px solid var(--line);
  padding:36px 0 40px;
}
.breadcrumb{font-size:13px;color:var(--ink-3);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"";width:10px;height:1px;background:var(--line);display:inline-block;}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb [aria-current="page"]{color:var(--ink-2);}
.article-title{
  margin-top:20px;
  font-size:32px;
  line-height:1.4;
  font-weight:600;
  color:var(--ink);
  letter-spacing:.02em;
  max-width:900px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:20px;
  font-size:13px;
  color:var(--ink-3);
}
.pill{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-pill);
  background:var(--brand-100);color:var(--brand-700);
  font-size:12px;font-weight:500;
}
.meta-sep{width:1px;height:12px;background:var(--line);display:inline-block;}

/* ---------- 正文 ---------- */
.article-shell{padding:56px 0 0;}
.article-body{
  max-width:800px;
  margin:0 auto;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-2);
}
.article-body p{margin:0 0 20px;}
.article-body h2{
  position:relative;
  font-size:24px;
  line-height:1.5;
  font-weight:600;
  color:var(--ink);
  margin:40px 0 16px;
  padding-left:14px;
  letter-spacing:.02em;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  border-radius:3px;background:var(--brand-700);
}
.article-body h3{
  font-size:19px;line-height:1.6;font-weight:600;color:var(--ink);
  margin:28px 0 12px;
}
.article-body ul{margin:0 0 20px;}
.article-body ul li{position:relative;padding-left:20px;margin:8px 0;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;
  border-radius:2px;background:var(--brand-500);
}
.article-body ol{margin:0 0 20px;padding-left:1.4em;list-style:decimal;}
.article-body ol li{margin:8px 0;}
.article-body blockquote{
  margin:24px 0;padding:20px;
  background:var(--brand-100);
  border-left:3px solid var(--brand-700);
  border-radius:0 var(--r) var(--r) 0;
  color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r);margin:24px 0;}
.article-body figure{margin:24px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-3);margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 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{background:var(--brand-100);color:var(--brand-700);font-weight:500;}
.article-body a{color:var(--brand-700);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-500);text-decoration-thickness:2px;}
.article-body strong{color:var(--ink);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

.empty-state{
  max-width:800px;margin:0 auto;text-align:center;
  background:var(--brand-100);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:64px 24px;
}
.empty-state svg{width:34px;height:34px;stroke:var(--brand-700);stroke-width:1.5;fill:none;margin:0 auto 16px;}
.empty-state p{font-size:15px;color:var(--ink-2);margin-bottom:20px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;border-radius:var(--r);
  border:1px solid var(--brand-700);color:var(--brand-700);
  font-size:15px;background:var(--white);
  transition:background-color .18s ease-out,transform .18s ease-out;
}
.btn-ghost:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);}

/* ---------- 文章底部 ---------- */
.article-foot{
  max-width:800px;margin:40px auto 0;
  padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:16px;
  align-items:center;justify-content:space-between;
  font-size:14px;
}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--ink-2);}
.back-link::before{content:"";width:16px;height:1px;background:var(--brand-700);display:inline-block;}
.back-link:hover{color:var(--brand-700);}
.share-note{display:flex;flex-wrap:wrap;gap:14px;color:var(--ink-3);font-size:13px;}
.share-note span{cursor:default;}

/* ---------- 相关内容 ---------- */
.related{padding:72px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-head h2{font-size:26px;font-weight:600;color:var(--ink);letter-spacing:.02em;}
.section-head p{font-size:14px;color:var(--ink-3);margin-top:8px;}
.section-link{font-size:14px;color:var(--brand-700);white-space:nowrap;}
.related-list{display:flex;flex-direction:column;gap:0;background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.related-item{display:flex;gap:18px;align-items:center;padding:20px 24px;border-bottom:1px solid var(--line);}
.related-item:last-child{border-bottom:0;}
.related-item:hover{background:var(--bg);}
.related-item__thumb{width:88px;height:64px;border-radius:var(--r-sm);overflow:hidden;flex:0 0 auto;background:var(--brand-100);}
.related-item__thumb img{width:100%;height:100%;object-fit:cover;}
.related-item__body{min-width:0;}
.related-item__title{
  font-size:16px;font-weight:500;color:var(--ink);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-item:hover .related-item__title{color:var(--brand-700);}
.related-item__time{font-size:13px;color:var(--ink-3);margin-top:6px;}

/* ---------- CTA ---------- */
.cta-band{margin:88px 0 0;padding:0 0 96px;}
.cta-band__inner{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;
  background:var(--brand-100);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:48px;
}
.cta-band__copy h2{font-size:28px;font-weight:600;color:var(--ink);letter-spacing:.02em;line-height:1.45;}
.cta-band__copy p{margin-top:16px;font-size:15px;color:var(--ink-2);max-width:420px;}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-2);}
.cta-points li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;
  border-radius:50%;background:var(--brand-700);opacity:.85;
}
.apply-form{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:8px;}
.field .req{color:var(--error);}
.field input{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r);
  background:var(--white);font-size:15px;color:var(--ink);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field input::placeholder{color:#A9B6C0;}
.field input:focus{
  outline:none;border-color:var(--brand-700);
  box-shadow:0 0 0 4px rgba(22,82,142,.12);
}
.btn-primary{
  width:100%;height:48px;border-radius:var(--r);
  background:var(--brand-700);color:#fff;font-size:16px;font-weight:500;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.btn-primary:hover{background:var(--brand-700-dark);box-shadow:var(--sh-2);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none;}
.form-note{font-size:13px;color:var(--ink-3);margin-top:12px;line-height:1.7;}
.alert{
  display:none;margin-bottom:16px;padding:12px 16px;
  border-radius:var(--r);font-size:14px;
  background:rgba(31,138,107,.08);color:var(--success);
  border:1px solid rgba(31,138,107,.22);
}
.alert.is-visible{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.6);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.site-footer .brand__name,.site-footer .brand__sub{color:#fff;}
.site-footer .brand__sub{color:rgba(255,255,255,.45);}
.site-footer .brand__dot{background:#fff;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:320px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a,.footer-col li{font-size:14px;color:rgba(255,255,255,.6);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:48px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-band__inner{grid-template-columns:1fr;gap:32px;padding:36px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .site-nav{height:64px;}
  .nav-links{
    position:fixed;left:0;right:0;top:64px;bottom:0;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:var(--white);padding:8px 20px 110px;overflow-y:auto;
  }
  body.nav-open .nav-links{display:flex;}
  .nav-links a{
    font-size:18px;color:var(--ink-2);
    padding:18px 0;border-bottom:1px solid var(--line);
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--brand-700);}
  .nav-toggle{display:block;}
  .btn-nav{display:none;position:fixed;left:20px;right:20px;bottom:20px;height:48px;z-index:80;}
  body.nav-open .btn-nav{display:inline-flex;background:var(--brand-700);color:#fff;}
  .article-hero{padding:24px 0 28px;}
  .article-title{font-size:26px;margin-top:16px;}
  .article-shell{padding:40px 0 0;}
  .article-body{font-size:16.5px;line-height:1.85;}
  .article-body h2{font-size:21px;margin:32px 0 14px;}
  .article-body h3{font-size:18px;}
  .related{padding:56px 0 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-head h2{font-size:22px;}
  .related-item{padding:16px;gap:14px;}
  .related-item__thumb{width:72px;height:56px;}
  .cta-band{margin-top:64px;padding-bottom:64px;}
  .cta-band__copy h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .site-footer{padding:48px 0 24px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .article-title{font-size:22px;}
  .article-meta{gap:10px;}
  .cta-band__inner{padding:24px;}
  .apply-form{padding:20px;}
  .btn-primary{width:100%;}
  .related-item__title{font-size:15px;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0E2C4A;
  --brand-700:#16528E;
  --brand-600:#12467A;
  --brand-500:#3A7CBE;
  --brand-100:#E6EFF8;
  --accent:#D98B3A;
  --ink:#12212E;
  --ink-2:#43535F;
  --ink-3:#7A8A96;
  --line:#E3EAF1;
  --bg:#F6F9FC;
  --white:#FFFFFF;
  --success:#1F8A6B;
  --warn:#C8781F;
  --error:#C0392B;
  --r-sm:8px;
  --r:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,33,46,.06);
  --sh-2:0 10px 28px -12px rgba(16,60,104,.18);
  --sh-3:0 18px 40px -16px rgba(16,60,104,.28);
  --nav-h:72px;
  --container:1200px;
  --pad:32px;
  --section-y:96px;
}
*,
*::before,
*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","思源黑体",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4{
  margin:0;
  color:var(--ink);
  font-weight:600;
  line-height:1.35;
  letter-spacing:.02em;
}
h1{font-size:38px;}
h2{font-size:28px;}
h3{font-size:20px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{
  color:inherit;
  text-decoration:none;
  transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;
}
a:visited{color:inherit;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--pad);
}
.section{padding:var(--section-y) 0;}
.section--tight{padding:64px 0;}
.section--alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:820px;margin-bottom:40px;}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--ink-2);max-width:760px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--brand-700);
  background:var(--brand-100);
  border-radius:var(--r-pill);
  padding:4px 12px;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--brand-500);
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.site-nav{
  height:var(--nav-h);
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand__dot{
  width:6px;height:6px;
  border-radius:2px;
  background:var(--brand-700);
  margin-top:2px;
}
.brand__text{display:flex;flex-direction:column;}
.brand__name{
  font-size:18px;
  font-weight:600;
  color:var(--ink);
  letter-spacing:.02em;
  line-height:1.2;
}
.brand__sub{
  font-size:10px;
  letter-spacing:.18em;
  color:var(--ink-3);
  line-height:1.4;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:36px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--ink-2);
  padding:6px 0;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:var(--brand-700);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s ease-out;
}
.nav-links a:hover{color:var(--brand-700);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{height:2px;transform:scaleX(1);}
.nav-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.btn-nav{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:38px;
  padding:0 18px;
  border:1px solid var(--line);
  border-radius:var(--r);
  font-size:14px;
  color:var(--brand-700);
  background:var(--white);
  white-space:nowrap;
  transition:background-color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.btn-nav:hover{
  background:var(--brand-100);
  border-color:var(--brand-500);
  box-shadow:var(--sh-1);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-sm);
  padding:12px 10px;
  flex-direction:column;
  justify-content:space-between;
  align-items:stretch;
}
.nav-toggle span{
  display:block;
  height:1.5px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .18s ease-out,opacity .18s ease-out;
}
.nav-panel-cta{display:none !important;}

/* ---------- 面包屑 ---------- */
.crumb-bar{
  border-bottom:1px solid var(--line);
  background:var(--white);
}
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  padding:16px 0;
  font-size:13px;
  color:var(--ink-3);
}
.crumb li{display:flex;align-items:center;gap:10px;}
.crumb li+li::before{
  content:"";
  width:12px;height:1px;
  background:var(--line);
}
.crumb a{color:var(--ink-3);}
.crumb a:hover{color:var(--brand-700);}
.crumb li[aria-current]{color:var(--ink-2);}

/* ---------- 页头 ---------- */
.page-head{
  background:
    linear-gradient(180deg,rgba(230,239,248,.55) 0%,rgba(246,249,252,0) 100%);
  border-bottom:1px solid var(--line);
  padding:64px 0 56px;
}
.page-head__title{
  font-size:40px;
  max-width:820px;
  margin-bottom:16px;
}
.page-head__desc{
  font-size:17px;
  color:var(--ink-2);
  max-width:760px;
}
.page-head__meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  margin-top:24px;
  font-size:14px;
  color:var(--ink-3);
}
.page-head__meta span{display:inline-flex;align-items:center;gap:8px;}
.page-head__meta svg{width:16px;height:16px;stroke:var(--brand-500);}

/* ---------- 8/4 双栏 ---------- */
.layout-8-4{
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.col-main .section-head{margin-bottom:32px;}
.channel-list{
  border-top:1px solid var(--line);
}
.channel-item{
  display:flex;
  gap:20px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
}
.channel-item__thumb{
  flex:0 0 120px;
  width:120px;height:90px;
  border-radius:var(--r-sm);
  overflow:hidden;
  background:var(--brand-100);
  border:1px solid var(--line);
}
.channel-item__thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .2s ease-out;
}
.channel-item:hover .channel-item__thumb img{transform:scale(1.04);}
.channel-item__body{min-width:0;}
.channel-item__body h3{
  font-size:18px;
  margin-bottom:8px;
}
.channel-item__body p{
  font-size:14.5px;
  color:var(--ink-2);
  margin-bottom:12px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--brand-700);
  border-bottom:1px solid rgba(22,82,142,.35);
  padding-bottom:2px;
}
.link-arrow::after{
  content:"";
  width:12px;height:1px;
  background:currentColor;
  transition:width .18s ease-out;
}
.link-arrow:hover{color:var(--brand-500);border-bottom-color:var(--brand-500);}
.link-arrow:hover::after{width:18px;}

/* ---------- 侧栏 ---------- */
.side-sticky{
  position:sticky;
  top:calc(var(--nav-h) + 24px);
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:24px;
}
.side-card h3{
  font-size:16px;
  margin-bottom:16px;
}
.side-list li+li{border-top:1px solid var(--line);}
.side-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 0;
  font-size:14.5px;
  color:var(--ink-2);
}
.side-list a:hover{color:var(--brand-700);}
.side-list a span.tag-mini{
  font-size:12px;
  color:var(--brand-700);
  background:var(--brand-100);
  border-radius:var(--r-pill);
  padding:2px 8px;
}
.side-card--cta{
  background:var(--brand-100);
  border-color:transparent;
}
.side-card--cta h3{margin-bottom:10px;}
.side-card--cta p{font-size:14px;margin-bottom:16px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r);
  font-size:15px;
  font-weight:500;
  border:1px solid transparent;
  transition:background-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn-primary{
  background:var(--brand-700);
  color:var(--white);
}
.btn-primary:hover{
  background:var(--brand-600);
  box-shadow:var(--sh-2);
  transform:translateY(-1px);
}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{
  background:var(--white);
  border-color:var(--line);
  color:var(--brand-700);
}
.btn-ghost:hover{
  background:var(--brand-100);
  border-color:var(--brand-500);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 步骤流 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:32px;
  position:relative;
}
.steps::before{
  content:"";
  position:absolute;
  top:26px;left:8%;right:8%;
  height:1px;
  background:repeating-linear-gradient(90deg,var(--line) 0 6px,transparent 6px 12px);
}
.step-card{
  position:relative;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:28px;
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.step-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-3);
  border-color:rgba(22,82,142,.2);
}
.step-card__num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  border-radius:var(--r-pill);
  background:var(--white);
  border:1px solid var(--line);
  color:var(--accent);
  font-size:20px;
  font-weight:600;
  margin-bottom:20px;
}
.step-card h3{font-size:18px;margin-bottom:10px;}
.step-card p{font-size:14px;}

/* ---------- KPI ---------- */
.kpi-band{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.kpi{
  padding:32px 28px;
  border-right:1px solid var(--line);
}
.kpi:last-child{border-right:0;}
.kpi__num{
  font-size:30px;
  font-weight:600;
  color:var(--brand-700);
  letter-spacing:.01em;
  line-height:1.3;
}
.kpi__num small{font-size:16px;font-weight:500;margin-left:4px;}
.kpi__label{
  font-size:14px;
  color:var(--ink-2);
  margin-top:10px;
}
.kpi__note{
  font-size:13px;
  color:var(--ink-3);
  margin-top:4px;
}

/* ---------- 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  font-size:12px;
  padding:4px 10px;
  border-radius:var(--r-pill);
  background:var(--brand-100);
  color:var(--brand-700);
  line-height:1.5;
}
.badge-ok{background:rgba(31,138,107,.1);color:var(--success);}
.badge-warn{background:rgba(200,120,31,.12);color:var(--warn);}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:12px 16px;
  border-radius:var(--r);
  font-size:14px;
  background:rgba(58,124,190,.08);
  color:var(--brand-700);
  margin-top:32px;
}
.notice svg{flex:0 0 18px;width:18px;height:18px;margin-top:3px;stroke:currentColor;}

/* ---------- FAQ ---------- */
.faq-list{
  border-top:1px solid var(--line);
  max-width:900px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:24px;
  padding:20px 0;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";
  flex:0 0 16px;
  height:16px;
  margin-top:6px;
  background:
    linear-gradient(currentColor,currentColor) center/16px 1.5px no-repeat,
    linear-gradient(currentColor,currentColor) center/1.5px 16px no-repeat;
  color:var(--brand-700);
  transition:transform .18s ease-out;
}
.faq-item[open] summary::after{
  background:linear-gradient(currentColor,currentColor) center/16px 1.5px no-repeat;
}
.faq-item summary:hover{color:var(--brand-700);}
.faq-item__body{
  padding:0 0 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-2);
  max-width:800px;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-100);
  border:1px solid rgba(22,82,142,.12);
  border-radius:var(--r-lg);
  padding:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}
.cta-band__text{max-width:640px;}
.cta-band__text h2{font-size:26px;margin-bottom:12px;}
.cta-band__text p{font-size:15px;}
.cta-band__points{
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  margin-top:18px;
  font-size:14px;
  color:var(--ink-2);
}
.cta-band__points li{display:flex;align-items:center;gap:8px;}
.cta-band__points li::before{
  content:"";
  width:6px;height:6px;
  border-radius:2px;
  background:var(--brand-700);
}
.cta-band__action{flex:0 0 auto;display:flex;flex-direction:column;gap:10px;align-items:stretch;}
.cta-band__action span{font-size:13px;color:var(--ink-3);text-align:center;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.6);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
}
.site-footer .brand__name{color:var(--white);}
.site-footer .brand__sub{color:rgba(255,255,255,.5);}
.site-footer .brand__dot{background:var(--brand-500);}
.footer-brand p{
  font-size:14px;
  margin-top:16px;
  max-width:300px;
  color:rgba(255,255,255,.6);
}
.footer-col h3{
  font-size:14px;
  color:var(--white);
  font-weight:600;
  margin-bottom:18px;
  letter-spacing:.04em;
}
.footer-col li{margin-bottom:12px;font-size:14px;}
.footer-col a{color:rgba(255,255,255,.6);}
.footer-col a:hover{color:var(--white);}
.footer-bottom{
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--pad:28px;--section-y:80px;}
  h1{font-size:34px;}
  .page-head__title{font-size:34px;}
  .layout-8-4{gap:32px;}
}
@media (max-width:991px){
  :root{--section-y:72px;}
  h1{font-size:32px;}
  .page-head{padding:48px 0 40px;}
  .page-head__title{font-size:30px;}
  .layout-8-4{grid-template-columns:1fr;}
  .side-sticky{position:static;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .steps::before{display:none;}
  .kpi-band{grid-template-columns:repeat(2,minmax(0,1fr));}
  .kpi:nth-child(2){border-right:0;}
  .kpi:nth-child(1),
  .kpi:nth-child(2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px;}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;
    left:0;right:0;
    top:var(--nav-h);
    bottom:0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:8px 20px 24px;
    background:var(--white);
    overflow-y:auto;
    transform:translateY(-8px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s ease-out;
    z-index:55;
  }
  body.nav-open .nav-links{
    transform:translateY(0);
    opacity:1;
    visibility:visible;
    pointer-events:auto;
  }
  body.nav-open{overflow:hidden;}
  .nav-links a{
    font-size:20px;
    padding:18px 0;
    border-bottom:1px solid var(--line);
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--brand-700);}
  .nav-panel-cta{
    display:inline-flex !important;
    margin-top:24px;
    height:48px;
    align-items:center;
    justify-content:center;
    border-bottom:0 !important;
    padding:0 !important;
    font-size:15px !important;
    background:var(--brand-700);
    color:var(--white) !important;
    border-radius:var(--r);
  }
  .nav-toggle{display:flex;}
  body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  body.nav-open .nav-toggle span:nth-child(2){opacity:0;}
  body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
}
@media (max-width:767px){
  :root{--pad:20px;--section-y:56px;--nav-h:64px;}
  h1{font-size:27px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  .brand__name{font-size:16px;}
  .brand__sub{font-size:9px;letter-spacing:.14em;}
  .btn-nav{padding:0 14px;font-size:13px;height:36px;}
  .page-head{padding:36px 0 32px;}
  .page-head__title{font-size:26px;}
  .page-head__desc{font-size:15.5px;}
  .channel-item{
    flex-direction:column;
    gap:14px;
    padding:22px 0;
  }
  .channel-item__thumb{
    flex:0 0 auto;
    width:100%;
    height:auto;
    aspect-ratio:16/10;
  }
  .cta-band{padding:28px 22px;gap:24px;}
  .cta-band__text h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .btn{width:100%;}
  .cta-band__action{width:100%;}
  .summary-gap{height:8px;}
  .kpi{padding:24px 20px;}
  .kpi__num{font-size:26px;}
}
@media (max-width:480px){
  h1{font-size:24px;}
  .page-head__title{font-size:23px;}
  .kpi-band{grid-template-columns:1fr;}
  .kpi{border-right:0;border-bottom:1px solid var(--line);}
  .kpi:last-child{border-bottom:0;}
  .side-card{padding:20px;}
  .step-card{padding:22px;}
  .btn{padding:0 20px;}
  .faq-item summary{font-size:16px;gap:16px;}
}

/* roulang page: category2 */
:root{
  --brand-900:#0E2C4A;
  --brand-700:#16528E;
  --brand-700-dark:#12467A;
  --brand-500:#3A7CBE;
  --brand-100:#E6EFF8;
  --accent:#D98B3A;
  --ink:#12212E;
  --ink-2:#43535F;
  --ink-3:#7A8A96;
  --line:#E3EAF1;
  --bg:#F6F9FC;
  --white:#FFFFFF;
  --success:#1F8A6B;
  --warn:#C8781F;
  --error:#C0392B;
  --r-sm:8px;
  --r:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,33,46,.06);
  --sh-2:0 10px 28px -12px rgba(16,60,104,.18);
  --sh-3:0 18px 40px -16px rgba(16,60,104,.28);
  --sect:96px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Source Han Sans","思源黑体",system-ui,"Segoe UI",Inter,Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;letter-spacing:.02em;line-height:1.35}
h1{font-size:38px}
h2{font-size:28px}
h3{font-size:20px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
button{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--sect) 0}
.section--alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:820px;margin-bottom:40px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--ink-2);font-size:16px}
.eyebrow{display:inline-block;font-size:13px;color:var(--accent);letter-spacing:.08em;margin-bottom:10px}
.lead{font-size:17px;color:var(--ink-2)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__dot{width:6px;height:6px;border-radius:2px;background:var(--brand-700);flex:0 0 auto}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-size:18px;font-weight:600;color:var(--ink);letter-spacing:.02em}
.brand__sub{font-size:10px;letter-spacing:.18em;color:var(--ink-3);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:36px}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--brand-700);
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;
}
.nav-links a:hover{color:var(--brand-700)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--ink);font-weight:500}
.nav-links a.is-active::after{height:2px;transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.btn-nav{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 20px;border-radius:var(--r);
  border:1px solid var(--line);color:var(--brand-700);background:transparent;
  font-size:14px;font-weight:500;transition:all .18s ease-out;white-space:nowrap;
}
.btn-nav:hover{background:var(--brand-100);border-color:var(--brand-500)}
.nav-toggle{
  display:none;width:44px;height:44px;border:0;background:transparent;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0;
}
.nav-toggle span{display:block;width:20px;height:1.5px;background:var(--ink);border-radius:2px;transition:transform .18s ease-out,opacity .18s ease-out}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r);
  font-size:15px;font-weight:500;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn--primary{background:var(--brand-700);color:#fff}
.btn--primary:hover{background:var(--brand-700-dark);box-shadow:var(--sh-2);transform:translateY(-1px)}
.btn--primary:active{transform:translateY(1px)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--brand-700)}
.btn--ghost:hover{background:var(--brand-100);border-color:var(--brand-500)}
.btn--ghost:active{transform:translateY(1px)}
.btn--block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:12px;line-height:1;padding:6px 10px;border-radius:var(--r-pill);white-space:nowrap;
}
.badge--warn{background:rgba(200,120,31,.1);color:var(--warn)}
.badge--success{background:rgba(31,138,107,.1);color:var(--success)}

/* ============ 页头区 ============ */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:20px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"";width:12px;height:1px;background:var(--line);display:block}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb [aria-current="page"]{color:var(--ink-2)}
.page-hero{background:var(--white);border-bottom:1px solid var(--line);padding:56px 0 72px}
.page-hero__inner{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.page-hero h1{margin:16px 0 16px}
.page-hero__desc{font-size:16px;color:var(--ink-2);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;margin-top:28px;font-size:13.5px;color:var(--ink-3)}
.trust-row li{position:relative;padding-left:16px}
.trust-row li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--brand-500)}
.page-hero__media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);background:var(--brand-100);aspect-ratio:16/11}
.page-hero__media img{width:100%;height:100%;object-fit:cover}
.page-hero__media::after{content:"";position:absolute;inset:0;background:rgba(230,239,248,.18)}

/* ============ KPI ============ */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.kpi{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.kpi:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(22,82,142,.2)}
.kpi__num{font-size:32px;font-weight:600;color:var(--brand-700);letter-spacing:.02em;line-height:1.1}
.kpi__num em{font-size:15px;font-style:normal;color:var(--ink-3);margin-left:4px;font-weight:400}
.kpi__label{margin-top:10px;font-size:14px;color:var(--ink-2)}
.kpi__note{margin-top:6px;font-size:13px;color:var(--ink-3)}

/* ============ 时间轴 ============ */
.timeline{position:relative;max-width:860px}
.timeline::before{content:"";position:absolute;left:6px;top:10px;bottom:10px;width:2px;background:var(--line)}
.timeline__item{position:relative;padding:0 0 44px 44px}
.timeline__item:last-child{padding-bottom:0}
.timeline__item::before{
  content:"";position:absolute;left:0;top:8px;width:14px;height:14px;border-radius:50%;
  background:var(--brand-700);box-shadow:0 0 0 4px rgba(22,82,142,.1);
}
.timeline__num{font-size:13px;color:var(--accent);letter-spacing:.1em;display:block;margin-bottom:6px}
.timeline__item h3{margin-bottom:10px;font-size:19px}
.timeline__item p{font-size:15.5px;color:var(--ink-2)}
.check-list{margin-top:16px;display:grid;gap:10px}
.check-list li{position:relative;padding-left:26px;font-size:14.5px;color:var(--ink-2);line-height:1.7}
.check-list li::before{
  content:"";position:absolute;left:2px;top:7px;width:12px;height:7px;
  border-left:1.5px solid var(--brand-700);border-bottom:1.5px solid var(--brand-700);
  transform:rotate(-45deg);
}

/* ============ 风险卡片 ============ */
.risk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(22,82,142,.2)}
.card__thumb{aspect-ratio:16/10;background:var(--brand-100);overflow:hidden}
.card__thumb img{width:100%;height:100%;object-fit:cover}
.card__body{padding:26px}
.card__body h3{font-size:19px;margin-bottom:10px}
.card__body p{font-size:14.5px;color:var(--ink-2)}
.card__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.link-more{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;color:var(--brand-700);border-bottom:1px solid transparent}
.link-more:hover{color:var(--brand-500);border-bottom-color:var(--brand-500)}
.link-more::after{content:"→";font-size:14px;line-height:1}

/* ============ 对照表 ============ */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--white);box-shadow:var(--sh-1)}
table.cmp{width:100%;border-collapse:collapse;min-width:680px}
table.cmp th,table.cmp td{padding:18px 22px;text-align:left;font-size:14.5px;border-top:1px solid var(--line)}
table.cmp thead th{
  background:var(--brand-100);color:var(--brand-700);font-weight:600;font-size:14px;
  border-top:0;letter-spacing:.02em;
}
table.cmp tbody th{
  font-weight:500;color:var(--ink);background:var(--white);position:sticky;left:0;z-index:2;
  border-right:1px solid var(--line);min-width:150px;
}
table.cmp td{color:var(--ink-2)}
table.cmp tbody tr:hover td{background:rgba(230,239,248,.35)}
.table-note{margin-top:14px;font-size:13px;color:var(--ink-3)}

/* ============ FAQ ============ */
.faq{max-width:840px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;background:transparent;border:0;padding:22px 0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:16.5px;font-weight:600;color:var(--ink);text-align:left;line-height:1.6;
}
.faq-q:hover{color:var(--brand-700)}
.faq-icon{
  flex:0 0 auto;width:18px;height:18px;position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-700);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out;
}
.faq-icon::before{left:0;top:8px;width:18px;height:1.5px}
.faq-icon::after{left:8px;top:0;width:1.5px;height:18px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease-out}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{padding:0 0 24px;margin:0;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:760px}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-100);border-radius:var(--r-lg);padding:48px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start;
}
.cta-band h2{margin-bottom:14px}
.cta-points{margin-top:22px;display:grid;gap:12px}
.cta-points li{position:relative;padding-left:24px;font-size:14.5px;color:var(--ink-2)}
.cta-points li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--accent);opacity:.85}
.form-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;box-shadow:var(--sh-2)}
.form-card h3{font-size:19px;margin-bottom:6px}
.form-card__hint{font-size:13.5px;color:var(--ink-3);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:8px}
.field label .req{color:var(--error);margin-left:2px}
.field input{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r);
  border:1px solid var(--line);background:var(--white);color:var(--ink);font-size:15px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field input::placeholder{color:#A8B6C0}
.field input:focus{outline:none;border-color:var(--brand-700);box-shadow:0 0 0 4px rgba(22,82,142,.12)}
.field.is-error input{border-color:var(--error)}
.field__err{display:none;margin-top:6px;font-size:13px;color:var(--error)}
.field.is-error .field__err{display:block}
.form-note{margin-top:14px;font-size:13px;color:var(--ink-3)}
.alert{display:none;margin-top:16px;padding:12px 16px;border-radius:var(--r);font-size:14px}
.alert--success{background:rgba(31,138,107,.08);color:var(--success);border:1px solid rgba(31,138,107,.22)}
.alert--error{background:rgba(192,57,43,.08);color:var(--error);border:1px solid rgba(192,57,43,.22)}
.alert.is-show{display:block}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.68);padding:72px 0 28px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand__dot{background:#fff}
.footer-brand .brand__name{color:#fff}
.footer-brand .brand__sub{color:rgba(255,255,255,.5)}
.footer-col p{font-size:14px;line-height:1.8;max-width:320px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.04em}
.footer-list{display:grid;gap:12px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.68)}
.footer-list a:hover{color:#fff}
.footer-quote{margin-top:18px;font-size:13px;color:rgba(255,255,255,.5);padding-left:12px;border-left:1px solid rgba(255,255,255,.18)}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  :root{--sect:80px}
  .nav-links{gap:24px}
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .risk-grid{grid-template-columns:repeat(2,1fr)}
  .page-hero__inner{grid-template-columns:1fr;gap:36px}
  .page-hero__media{aspect-ratio:16/9}
  .cta-band{grid-template-columns:1fr;gap:32px;padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:991px){
  h1{font-size:32px}
  h2{font-size:25px}
  :root{--sect:72px}
}
@media (max-width:860px){
  .site-nav{gap:12px}
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;top:72px;left:0;right:0;bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:8px 20px 120px;overflow-y:auto;
    display:none;
  }
  .nav-links.is-open{display:flex}
  .nav-links a{font-size:20px;padding:20px 0;border-bottom:1px solid var(--line);width:100%}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--brand-700)}
  body.nav-locked{overflow:hidden}
}
@media (max-width:768px){
  .container{padding:0 20px}
  :root{--sect:56px;--gap:18px}
  h1{font-size:28px}
  h2{font-size:23px}
  h3{font-size:18px}
  .page-hero{padding:36px 0 48px}
  .kpi-grid{grid-template-columns:1fr 1fr;gap:16px}
  .kpi{padding:22px}
  .kpi__num{font-size:26px}
  .risk-grid{grid-template-columns:1fr}
  .timeline__item{padding-left:34px;padding-bottom:36px}
  .cta-band{padding:28px;border-radius:var(--r)}
  .form-card{padding:22px}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:56px 0 24px;margin-top:64px}
}
@media (max-width:480px){
  .brand__name{font-size:16px}
  .brand__sub{display:none}
  .btn-nav{height:34px;padding:0 14px;font-size:13px}
  .hero-actions .btn{width:100%}
  .trust-row{gap:12px;flex-direction:column}
  .kpi-grid{grid-template-columns:1fr}
  table.cmp th,table.cmp td{padding:14px 16px;font-size:13.5px}
}

/* roulang page: category3 */
:root{
  --brand-900:#0E2C4A;
  --brand-700:#16528E;
  --brand-500:#3A7CBE;
  --brand-100:#E6EFF8;
  --accent:#D98B3A;
  --ink:#12212E;
  --ink-2:#43535F;
  --ink-3:#7A8A96;
  --line:#E3EAF1;
  --bg:#F6F9FC;
  --white:#FFFFFF;
  --success:#1F8A6B;
  --warn:#C8781F;
  --error:#C0392B;
  --r-sm:8px;
  --r:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,33,46,.06);
  --sh-2:0 10px 28px -12px rgba(16,60,104,.18);
  --sh-3:0 18px 40px -16px rgba(16,60,104,.28);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;letter-spacing:.02em;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out}
a:hover{color:var(--brand-500)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--white{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:820px;margin-bottom:40px}
.section-head h2{font-size:28px;margin-bottom:12px}
.section-head p{font-size:16px;color:var(--ink-2)}
.eyebrow{display:inline-block;font-size:13px;font-weight:500;color:var(--brand-700);background:var(--brand-100);border-radius:var(--r-pill);padding:4px 12px;margin-bottom:16px;letter-spacing:.04em}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.site-nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink)}
.brand__dot{width:6px;height:6px;border-radius:2px;background:var(--brand-700);flex:none}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-size:18px;font-weight:600;letter-spacing:.02em;color:var(--ink)}
.brand__sub{font-size:10px;font-weight:500;letter-spacing:.18em;color:var(--ink-3)}
.nav-links{display:flex;align-items:center;gap:36px}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;
  border-bottom:1px solid transparent;
}
.nav-links a:hover{color:var(--brand-700);border-bottom-color:var(--brand-500)}
.nav-links a.is-active{color:var(--ink)}
.nav-links a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand-700);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px}
.btn-nav{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 20px;border-radius:var(--r);
  border:1px solid var(--line);background:var(--white);
  color:var(--brand-700);font-size:14px;font-weight:500;
  box-shadow:var(--sh-1);
}
.btn-nav:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700)}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:var(--r-sm)}
.nav-toggle span{display:block;width:22px;height:1.5px;background:var(--ink);border-radius:2px;transition:transform .18s ease-out,opacity .18s ease-out}
.site-header.is-open .nav-toggle span:nth-child(1){transform:translateY(3.25px) rotate(45deg)}
.site-header.is-open .nav-toggle span:nth-child(2){opacity:0}
.site-header.is-open .nav-toggle span:nth-child(3){transform:translateY(-3.25px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r);
  font-size:16px;font-weight:500;border:1px solid transparent;
  transition:background-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:#12467A;color:#fff;box-shadow:var(--sh-2);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:var(--white);border-color:var(--line);color:var(--brand-700)}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700)}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:500;color:var(--brand-700);border-bottom:1px solid transparent}
.btn-text:hover{border-bottom-color:var(--brand-500)}

/* ---------- page head ---------- */
.page-head{padding:56px 0 48px;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%)}
.breadcrumb{margin-bottom:24px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"";width:14px;height:1px;background:#C9D6E2}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb [aria-current="page"]{color:var(--ink-2)}
.page-head h1{font-size:38px;max-width:900px;margin-bottom:18px}
.page-head .lede{font-size:17px;max-width:800px;color:var(--ink-2)}
.kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:44px}
.kpi{padding:22px 24px;background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.kpi strong{display:block;font-size:30px;font-weight:600;color:var(--brand-700);letter-spacing:.01em;line-height:1.2}
.kpi span{display:block;margin-top:6px;font-size:14px;color:var(--ink-3)}

/* ---------- banner ---------- */
.banner-wrap{padding:8px 0 0}
.banner{
  position:relative;margin:0;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-2);background:var(--brand-100);
}
.banner img{width:100%;height:280px;object-fit:cover;display:block}
.banner::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,44,74,.72) 0%,rgba(14,44,74,.34) 48%,rgba(14,44,74,.06) 100%)}
.banner figcaption{
  position:absolute;left:40px;bottom:32px;right:40px;z-index:2;color:#fff;
  max-width:560px;font-size:15px;line-height:1.7;
}
.banner figcaption strong{display:block;font-size:22px;font-weight:600;margin-bottom:8px;letter-spacing:.02em}

/* ---------- accordion ---------- */
.acc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.acc-col{display:flex;flex-direction:column;gap:16px}
.acc-item{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);transition:box-shadow .18s ease-out,border-color .18s ease-out}
.acc-item:hover{box-shadow:var(--sh-3);border-color:rgba(22,82,142,.25)}
.acc-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:18px 24px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);letter-spacing:.01em;
}
.acc-icon{position:relative;width:16px;height:16px;flex:none}
.acc-icon::before,.acc-icon::after{content:"";position:absolute;background:var(--brand-700);border-radius:2px;transition:transform .18s ease-out,opacity .18s ease-out}
.acc-icon::before{top:7.25px;left:0;width:16px;height:1.5px}
.acc-icon::after{left:7.25px;top:0;width:1.5px;height:16px}
.acc-item.is-open .acc-icon::after{transform:scaleY(0);opacity:0}
.acc-body{max-height:0;overflow:hidden;transition:max-height .22s ease-out}
.acc-item.is-open .acc-body{max-height:480px}
.acc-body-inner{padding:0 24px 22px;border-top:1px solid var(--line);margin-top:2px;padding-top:16px}
.acc-body p{font-size:15px;line-height:1.8;color:var(--ink-2)}
.acc-body ul{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.acc-body li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-2)}
.acc-body li::before{content:"";position:absolute;left:2px;top:9px;width:8px;height:8px;border-left:1.5px solid var(--brand-700);border-bottom:1.5px solid var(--brand-700);transform:rotate(-45deg)}
.acc-tag{display:inline-block;margin-top:14px;font-size:12px;font-weight:500;color:var(--brand-700);background:var(--brand-100);border-radius:var(--r-pill);padding:4px 10px}

/* ---------- compare table ---------- */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--white);box-shadow:var(--sh-1)}
table.cmp{width:100%;border-collapse:collapse;min-width:760px;font-size:15px}
table.cmp caption{text-align:left;padding:18px 24px;font-size:14px;color:var(--ink-3);border-bottom:1px solid var(--line)}
table.cmp th,table.cmp td{padding:16px 24px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
table.cmp thead th{background:var(--brand-100);color:var(--ink);font-weight:600;font-size:15px;white-space:nowrap}
table.cmp tbody th{font-weight:500;color:var(--ink);white-space:nowrap;background:var(--white);position:sticky;left:0;z-index:1;border-right:1px solid var(--line)}
table.cmp tbody tr:last-child th,table.cmp tbody tr:last-child td{border-bottom:0}
table.cmp tbody tr:hover td{background:#FAFCFE}
table.cmp td{color:var(--ink-2)}
.cell-strong{color:var(--brand-700);font-weight:500}

/* ---------- scene cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(22,82,142,.22)}
.card__media{position:relative;background:var(--brand-100)}
.card__media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.card__body{padding:24px}
.card__body h3{font-size:19px;margin-bottom:10px}
.card__body p{font-size:15px;color:var(--ink-2)}
.card__link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:15px;font-weight:500;color:var(--brand-700)}
.card__link::after{content:"→";transition:transform .18s ease-out}
.card__link:hover::after{transform:translateX(3px)}
.pill{display:inline-block;font-size:12px;font-weight:500;color:var(--brand-700);background:var(--brand-100);border-radius:var(--r-pill);padding:4px 10px}
.pill--soft-success{background:rgba(31,138,107,.1);color:var(--success)}
.pill--soft-warn{background:rgba(200,120,31,.1);color:var(--warn)}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.flow-step{position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 24px;box-shadow:var(--sh-1)}
.flow-step::after{
  content:"";position:absolute;top:44px;right:-16px;width:16px;height:1px;
  background:repeating-linear-gradient(90deg,#C9D6E2 0 4px,transparent 4px 8px);
}
.flow-step:last-child::after{display:none}
.flow-step .num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:var(--r-pill);background:rgba(217,139,58,.12);color:var(--accent);font-size:15px;font-weight:600;margin-bottom:16px}
.flow-step h3{font-size:18px;margin-bottom:10px}
.flow-step p{font-size:14px;color:var(--ink-2)}
.flow-note{margin-top:24px;font-size:14px;color:var(--ink-3)}

/* ---------- faq ---------- */
.faq-list{max-width:900px;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:20px;
  padding:22px 0;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);
}
.faq-q:hover{color:var(--brand-700)}
.faq-mark{position:relative;width:16px;height:16px;flex:none}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--brand-700);border-radius:2px;transition:transform .18s ease-out,opacity .18s ease-out}
.faq-mark::before{top:7.25px;left:0;width:16px;height:1.5px}
.faq-mark::after{left:7.25px;top:0;width:1.5px;height:16px}
.faq-item.is-open .faq-mark::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{padding:0 0 24px;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:820px}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand-100);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:72px 0}
.cta-inner{display:grid;grid-template-columns:1fr 460px;gap:48px;align-items:center}
.cta-copy h2{font-size:28px;margin-bottom:14px}
.cta-copy p{font-size:16px;color:var(--ink-2);max-width:560px}
.cta-points{display:flex;flex-direction:column;gap:10px;margin-top:22px}
.cta-points li{position:relative;padding-left:22px;font-size:15px;color:var(--ink-2)}
.cta-points li::before{content:"";position:absolute;left:0;top:8px;width:9px;height:9px;border-left:1.5px solid var(--brand-700);border-bottom:1.5px solid var(--brand-700);transform:rotate(-45deg)}
.form-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-2);padding:28px}
.form-card h3{font-size:19px;margin-bottom:6px}
.form-card .form-hint{font-size:14px;color:var(--ink-3);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:6px}
.field .req{color:var(--error)}
.field input{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r);
  border:1px solid var(--line);background:var(--white);color:var(--ink);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field input::placeholder{color:#9AA9B4}
.field input:focus{outline:none;border-color:var(--brand-700);box-shadow:0 0 0 4px rgba(22,82,142,.12)}
.field.has-error input{border-color:var(--error)}
.field .err{display:none;margin-top:6px;font-size:13px;color:var(--error)}
.field.has-error .err{display:block}
.form-card .btn{width:100%}
.alert{display:none;margin-bottom:16px;padding:12px 16px;border-radius:var(--r);font-size:14px}
.alert.is-visible{display:block}
.alert--success{background:rgba(31,138,107,.1);color:var(--success)}
.alert--error{background:rgba(192,57,43,.08);color:var(--error)}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.62);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .brand__name,.site-footer .brand__sub{color:#fff}
.site-footer .brand__sub{color:rgba(255,255,255,.5)}
.site-footer .brand__dot{background:var(--brand-500)}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;max-width:320px}
.footer-contact{margin-top:14px;font-size:14px;color:rgba(255,255,255,.5)}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col li{font-size:14px;color:rgba(255,255,255,.62)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:rgba(255,255,255,.5);flex-wrap:wrap
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .kpi-row{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow-step:nth-child(2)::after{display:none}
  .cta-inner{grid-template-columns:1fr;gap:32px}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .page-head{padding:40px 0 36px}
  .page-head h1{font-size:30px}
  .acc-grid{grid-template-columns:1fr}
  .banner img{height:240px}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;left:0;right:0;top:72px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--white);padding:8px 20px 32px;overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s ease-out;
    border-top:1px solid var(--line);
  }
  .site-header.is-open .nav-links{opacity:1;visibility:visible;transform:none}
  .nav-links a{font-size:20px;padding:18px 0;border-bottom:1px solid var(--line);min-height:44px;display:flex;align-items:center}
  .nav-links a.is-active::after{display:none}
  .nav-links a.is-active{color:var(--brand-700)}
  .btn-nav{height:44px;padding:0 16px}
  body.nav-open{overflow:hidden}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .scene-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .flow-step::after{display:none}
  .kpi-row{grid-template-columns:1fr;gap:16px}
  .section-head h2{font-size:24px}
  .page-head h1{font-size:26px}
  .banner img{height:220px}
  .banner figcaption{left:20px;right:20px;bottom:20px}
  .banner figcaption strong{font-size:18px}
  .cta-copy h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  table.cmp th,table.cmp td{padding:14px 16px}
  table.cmp tbody th{background:var(--white)}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .btn{width:100%}
  .btn-nav{width:auto}
  .btn-text{width:auto}
  .form-card{padding:22px}
  .acc-head{padding:16px 18px;font-size:15.5px}
  .acc-body-inner{padding:0 18px 18px}
  .card__body{padding:20px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}

/* roulang page: category4 */
:root{
  --brand-900:#0E2C4A;
  --brand-700:#16528E;
  --brand-700-dark:#12467A;
  --brand-500:#3A7CBE;
  --brand-100:#E6EFF8;
  --accent:#D98B3A;
  --ink:#12212E;
  --ink-2:#43535F;
  --ink-3:#7A8A96;
  --line:#E3EAF1;
  --bg:#F6F9FC;
  --white:#FFFFFF;
  --success:#1F8A6B;
  --warn:#C8781F;
  --error:#C0392B;
  --r-sm:8px;
  --r:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,33,46,.06);
  --sh-2:0 10px 28px -12px rgba(16,60,104,.18);
  --sh-3:0 18px 40px -16px rgba(16,60,104,.28);
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"Inter","Segoe UI",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;line-height:1.35;letter-spacing:.02em;}
h1{font-size:38px;}
h2{font-size:28px;}
h3{font-size:20px;}
p{margin:0;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
button{font:inherit;color:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(10px);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.site-nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand__dot{
  width:9px;height:9px;border-radius:2px;
  background:var(--brand-700);
  box-shadow:0 0 0 4px rgba(22,82,142,.10);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{font-size:18px;font-weight:600;color:var(--ink);letter-spacing:.02em;}
.brand__sub{font-family:var(--font-num);font-size:10px;letter-spacing:.18em;color:var(--ink-3);}
.nav-links{display:flex;align-items:center;gap:36px;}
.nav-links a{
  position:relative;
  padding:6px 0;
  font-size:15px;
  color:var(--ink-2);
  transition:color .18s ease-out;
}
.nav-links a::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;
  height:2px;border-radius:2px;
  background:var(--brand-700);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease-out,height .18s ease-out;
}
.nav-links a:hover{color:var(--brand-700);}
.nav-links a:hover::after{transform:scaleX(1);height:1px;}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links__cta{display:none;}
.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.btn-nav{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 20px;
  border:1px solid var(--brand-700);
  border-radius:var(--r);
  font-size:14px;font-weight:500;
  color:var(--brand-700);
  background:transparent;
  transition:background .18s ease-out,color .18s ease-out,box-shadow .18s ease-out;
}
.btn-nav:hover{background:var(--brand-700);color:#fff;box-shadow:var(--sh-2);}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;height:44px;
  padding:0 10px;
  background:none;border:0;
  border-radius:var(--r-sm);
}
.nav-toggle span{
  display:block;height:1.5px;width:100%;
  background:var(--ink);
  border-radius:2px;
  transition:transform .18s ease-out,opacity .18s ease-out;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 28px;
  border-radius:var(--r);
  border:1px solid transparent;
  font-size:16px;font-weight:500;
  transition:background .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.btn--primary{background:var(--brand-700);color:#fff;}
.btn--primary:hover{background:var(--brand-700-dark);box-shadow:var(--sh-2);transform:translateY(-1px);}
.btn--primary:active{transform:translateY(1px);box-shadow:var(--sh-1);}
.btn--ghost{background:#fff;border-color:var(--line);color:var(--brand-700);}
.btn--ghost:hover{background:var(--brand-100);border-color:rgba(22,82,142,.24);}
.btn--sm{height:40px;padding:0 20px;font-size:14px;}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:500;
  color:var(--brand-700);
  border-bottom:1px solid rgba(22,82,142,.35);
  padding-bottom:2px;
  transition:color .18s ease-out,border-color .18s ease-out;
}
.link-arrow:hover{color:var(--brand-500);border-color:var(--brand-500);}

/* ---------- Page hero ---------- */
.page-hero{
  background:var(--white);
  padding:40px 0 64px;
  border-bottom:1px solid var(--line);
}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;font-size:13px;color:var(--ink-3);}
.crumbs li{display:flex;align-items:center;}
.crumbs li+li::before{
  content:"";width:1px;height:12px;background:var(--line);margin:0 10px;
}
.crumbs a{transition:color .18s ease-out;}
.crumbs a:hover{color:var(--brand-700);}
.crumbs [aria-current="page"]{color:var(--ink-2);}

.hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
  margin-top:36px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:12px;font-weight:500;
  letter-spacing:.04em;
}
.page-hero h1{margin-top:18px;font-size:38px;}
.page-hero .lead{
  margin-top:16px;
  max-width:640px;
  font-size:17px;
  color:var(--ink-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.trust-row{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:16px;
  margin-top:26px;
  font-size:14px;color:var(--ink-3);
}
.trust-row span{display:inline-flex;align-items:center;gap:16px;}
.trust-row span+span::before{
  content:"";width:1px;height:12px;background:var(--line);display:inline-block;
}
.hero-media{position:relative;}
.hero-media img{
  width:100%;height:320px;object-fit:cover;
  border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
}
.hero-media__badge{
  position:absolute;left:18px;bottom:18px;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);
  color:var(--brand-700);
  font-size:13px;font-weight:500;
  box-shadow:var(--sh-1);
}
.hero-media__badge i{
  width:7px;height:7px;border-radius:50%;background:var(--success);display:inline-block;
}

.chips{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:44px;
  padding-top:32px;
  border-top:1px solid var(--line);
}
.chips__label{
  align-self:center;
  font-size:13px;color:var(--ink-3);
  margin-right:4px;
}
.chip{
  display:inline-flex;align-items:center;
  height:38px;padding:0 18px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:#fff;
  font-size:14px;
  color:var(--ink-2);
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.chip:hover{border-color:rgba(22,82,142,.32);color:var(--brand-700);}
.chip.is-active{
  background:var(--brand-700);
  border-color:var(--brand-700);
  color:#fff;
  box-shadow:var(--sh-2);
}

/* ---------- Sections ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section-head{max-width:780px;}
.section-head .kicker{
  font-family:var(--font-num);
  font-size:12px;letter-spacing:.16em;
  color:var(--brand-500);
  text-transform:uppercase;
}
.section-head h2{margin-top:10px;}
.section-head p{margin-top:14px;font-size:16px;color:var(--ink-2);}
.section-head--row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  max-width:none;
}

/* ---------- Support cards grid ---------- */
.support-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
  margin-top:44px;
}
.scard{
  display:flex;
  flex-direction:column;
  gap:14px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.scard:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(22,82,142,.22);}
.scard--lg{grid-column:span 7;}
.scard--sm{grid-column:span 5;}
.scard__tag{
  align-self:flex-start;
  padding:4px 10px;
  border-radius:var(--r-pill);
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:12px;font-weight:500;
  letter-spacing:.02em;
}
.scard h3{font-size:19px;}
.scard p{font-size:14.5px;color:var(--ink-2);}
.scard__media{
  width:100%;height:190px;object-fit:cover;
  border-radius:var(--r);
  background:var(--brand-100);
}
.scard__foot{margin-top:auto;padding-top:6px;}
.scard__meta{
  display:flex;flex-wrap:wrap;gap:10px;
  font-size:13px;color:var(--ink-3);
}

/* ---------- Metrics ---------- */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:44px;
}
.metric{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px 24px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.metric:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.metric__num{
  font-family:var(--font-num);
  font-size:32px;font-weight:600;
  color:var(--brand-700);
  letter-spacing:-.01em;
  line-height:1.2;
}
.metric__num small{font-family:var(--font-cn);font-size:15px;font-weight:500;color:var(--ink-2);margin-left:4px;}
.metric__label{margin-top:10px;font-size:14px;color:var(--ink-3);line-height:1.7;}
.metric__bar{
  margin-top:18px;height:4px;border-radius:2px;background:var(--brand-100);overflow:hidden;
}
.metric__bar i{display:block;height:100%;background:var(--brand-500);border-radius:2px;}

/* ---------- Tiers ---------- */
.tiers-wrap{
  margin-top:44px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:40px 8px;
}
.tiers{display:grid;grid-template-columns:repeat(3,1fr);}
.tier{padding:0 32px;border-left:1px solid var(--line);}
.tier:first-child{border-left:0;}
.tier__name{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:600;color:var(--ink);}
.tier__name em{
  font-style:normal;
  font-family:var(--font-num);
  font-size:12px;font-weight:500;
  color:var(--accent);
}
.tier__desc{margin-top:12px;font-size:14.5px;color:var(--ink-2);}
.tier ul{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.tier li{
  position:relative;
  padding-left:22px;
  font-size:14px;color:var(--ink-2);
}
.tier li::before{
  content:"";
  position:absolute;left:0;top:9px;
  width:11px;height:6px;
  border-left:1.5px solid var(--brand-500);
  border-bottom:1.5px solid var(--brand-500);
  transform:rotate(-45deg);
}
.tier__foot{margin-top:22px;}

/* ---------- FAQ ---------- */
.faq-list{margin-top:40px;border-top:1px solid var(--line);max-width:900px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  width:100%;
  padding:22px 4px;
  background:none;border:0;
  text-align:left;
  font-size:17px;font-weight:600;
  color:var(--ink);
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--brand-700);}
.faq-mark{
  position:relative;
  flex-shrink:0;
  width:16px;height:16px;
}
.faq-mark::before,.faq-mark::after{
  content:"";position:absolute;background:var(--brand-500);border-radius:2px;
  transition:transform .2s ease-out,opacity .2s ease-out;
}
.faq-mark::before{left:0;top:7px;width:16px;height:1.5px;}
.faq-mark::after{left:7px;top:0;width:1.5px;height:16px;}
.faq-item.is-open .faq-mark::after{transform:scaleY(0);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s ease-out;
}
.faq-a p{
  padding:0 40px 22px 4px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}
.faq-item.is-open .faq-a{max-height:420px;}

/* ---------- CTA band ---------- */
.cta-section{padding:0 0 96px;}
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  padding:48px;
  background:var(--brand-100);
  border-radius:var(--r-lg);
}
.cta-band__copy{max-width:640px;}
.cta-band h2{font-size:26px;}
.cta-band p{margin-top:12px;font-size:16px;color:var(--ink-2);}
.cta-band__points{display:flex;flex-wrap:wrap;gap:22px;margin-top:18px;font-size:14px;color:var(--ink-2);}
.cta-band__points span{display:inline-flex;align-items:center;gap:8px;}
.cta-band__points span::before{
  content:"";width:6px;height:6px;border-radius:2px;background:var(--accent);
}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;flex-shrink:0;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.66);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand__dot{width:9px;height:9px;border-radius:2px;background:#5C9BD6;}
.footer-brand__name{font-size:17px;font-weight:600;color:#fff;letter-spacing:.02em;}
.footer-brand__sub{
  font-family:var(--font-num);font-size:10px;letter-spacing:.18em;
  color:rgba(255,255,255,.45);
}
.site-footer h4{
  font-size:14px;font-weight:600;color:#fff;
  margin-bottom:18px;letter-spacing:.04em;
}
.site-footer p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);}
.footer-list{display:flex;flex-direction:column;gap:12px;}
.footer-list a{
  font-size:14px;
  color:rgba(255,255,255,.66);
  transition:color .18s ease-out;
}
.footer-list a:hover{color:#fff;}
.footer-list span{font-size:13.5px;color:rgba(255,255,255,.6);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:24px 0;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .hero-grid{gap:36px;}
  h1{font-size:34px;}
  .page-hero h1{font-size:34px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .container{padding:0 28px;}
  .section{padding:72px 0;}
  .section--tight{padding:56px 0;}
  .cta-section{padding:0 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-media img{height:260px;}
  .scard--lg,.scard--sm{grid-column:span 6;}
  .tiers{grid-template-columns:1fr;}
  .tier{
    border-left:0;
    border-top:1px solid var(--line);
    padding:26px 24px 0;
  }
  .tier:first-child{border-top:0;padding-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;gap:28px;padding:40px;}
}
@media (max-width:960px){
  .nav-links{
    position:fixed;
    left:0;right:0;top:72px;bottom:0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 20px 24px;
    background:#fff;
    border-top:1px solid var(--line);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none;}
  .nav-links a{
    font-size:20px;
    padding:18px 4px;
    border-bottom:1px solid var(--line);
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--brand-700);font-weight:600;}
  .nav-links__cta{
    display:inline-flex;
    margin-top:auto;
    width:100%;
    height:52px;
    align-items:center;
    justify-content:center;
    border-radius:var(--r);
    background:var(--brand-700);
    color:#fff;
    font-size:16px;
    font-weight:500;
    border-bottom:0;
  }
  .nav-links__cta.is-active{color:#fff;}
  .btn-nav{display:none;}
  .nav-toggle{display:flex;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  h1{font-size:28px;}
  .page-hero h1{font-size:28px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  .section{padding:56px 0;}
  .page-hero{padding:28px 0 48px;}
  .hero-media img{height:220px;}
  .chips{margin-top:32px;padding-top:24px;gap:10px;}
  .chip{height:44px;padding:0 16px;font-size:13.5px;}
  .support-grid{gap:18px;margin-top:32px;}
  .scard--lg,.scard--sm{grid-column:span 12;}
  .scard{padding:22px;}
  .scard__media{height:180px;}
  .metrics{grid-template-columns:1fr;gap:16px;margin-top:32px;}
  .tiers-wrap{padding:28px 4px;}
  .tier{padding:24px 20px 0;}
  .faq-q{font-size:16px;padding:18px 2px;}
  .faq-a p{padding:0 24px 18px 2px;font-size:14.5px;}
  .cta-band{padding:28px 22px;border-radius:var(--r);}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:16px;}
}
@media (max-width:480px){
  h1{font-size:25px;}
  .page-hero h1{font-size:25px;}
  .page-hero .lead{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .trust-row{flex-direction:column;align-items:flex-start;gap:8px;}
  .trust-row span+span::before{display:none;}
  .metric__num{font-size:28px;}
}