/* roulang page: index */
:root{
  --brand-700:#17439C;
  --brand-600:#1E56C8;
  --brand-500:#2F6BE0;
  --brand-100:#E3ECFB;
  --brand-50:#F2F6FE;
  --accent:#0E9384;
  --accent-soft:#E4F5F2;
  --warm:#E8873A;
  --ink-900:#0E1B2E;
  --ink-700:#2A3B52;
  --ink-500:#5B6B80;
  --ink-300:#9AA7B8;
  --line:#E4EAF3;
  --soft:#F6F8FC;
  --white:#FFFFFF;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 2px 4px rgba(16,39,80,.04), 0 12px 28px -12px rgba(16,39,80,.12);
  --shadow-hover:0 8px 18px -8px rgba(16,39,80,.18);
  --container:1200px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,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-700);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media(min-width:640px){.container{padding-left:28px;padding-right:28px;}}
@media(min-width:1024px){.container{padding-left:40px;padding-right:40px;}}

.section{padding-top:44px;padding-bottom:44px;}
@media(min-width:768px){.section{padding-top:64px;padding-bottom:64px;}}
@media(min-width:1024px){.section{padding-top:96px;padding-bottom:96px;}}
.section-soft{background:var(--soft);}

/* 标题体系 */
.h1{
  font-size:clamp(28px,4.2vw,46px);
  line-height:1.22;
  font-weight:700;
  letter-spacing:-0.5px;
  color:var(--ink-900);
}
.h2{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.3;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:-0.3px;
}
.h3{
  font-size:19px;
  line-height:1.5;
  font-weight:600;
  color:var(--ink-900);
}
.lead{
  font-size:16px;
  line-height:1.8;
  color:var(--ink-500);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--brand-600);
  text-transform:none;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;border-radius:2px;background:var(--brand-600);
}
.dot-line{height:1px;background:var(--line);border:0;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .15s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 14px -8px rgba(30,86,200,.55);}
.btn-primary:hover{background:var(--brand-700);box-shadow:0 10px 20px -10px rgba(23,67,156,.55);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:#D7E2F5;}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-100);}
.btn-ghost:active{transform:translateY(1px);}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-600);
  transition:color .2s ease;
}
.link-arrow svg{transition:transform .2s ease;}
.link-arrow:hover{color:var(--brand-700);}
.link-arrow:hover svg{transform:translateX(2px);}

/* 标签 chip */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  font-size:12.5px;
  font-weight:600;
  line-height:1.4;
  color:var(--brand-700);
  background:var(--brand-100);
  border-radius:999px;
  white-space:nowrap;
}
.chip-accent{color:#0B6E63;background:var(--accent-soft);}
.chip-plain{color:var(--ink-500);background:#fff;border:1px solid var(--line);}
.chip-warm{color:#A85A18;background:#FDF0E3;}

/* 卡片 */
.card{
  background:#fff;
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:box-shadow .25s ease,transform .25s ease;
}
.card-hover:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;align-items:center;gap:16px;
  min-height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:46px;height:34px;padding:0 9px;
  background:var(--brand-600);
  color:#fff;font-size:15px;font-weight:700;letter-spacing:.02em;
  border-radius:9px;
  box-shadow:0 6px 14px -8px rgba(30,86,200,.7);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-cn{font-size:15px;font-weight:700;color:var(--ink-900);letter-spacing:-0.2px;}
.brand-sub{font-size:11px;color:var(--ink-300);letter-spacing:.06em;}
.nav-tabs{
  display:none;align-items:center;gap:6px;
  flex:1;min-width:0;
}
@media(min-width:1080px){.nav-tabs{display:flex;}}
.nav-tab{
  display:inline-flex;align-items:center;
  padding:7px 13px;
  font-size:13.5px;font-weight:600;color:var(--ink-700);
  background:var(--brand-50);
  border-radius:999px;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.nav-tab:hover{background:var(--brand-100);color:var(--brand-700);}
.nav-tab.is-active{background:var(--brand-600);color:#fff;box-shadow:0 6px 14px -10px rgba(30,86,200,.9);}
.nav-tab.is-active:hover{background:var(--brand-700);color:#fff;}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:none;}
.nav-divider{width:1px;height:26px;background:var(--line);display:none;}
@media(min-width:1080px){.nav-divider{display:block;}}
.nav-cta{display:none;}
@media(min-width:768px){.nav-cta{display:inline-flex;padding:10px 20px;font-size:14px;}}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;
  background:var(--brand-50);border:1px solid var(--line);color:var(--ink-700);
}
@media(min-width:1080px){.nav-toggle{display:none;}}
.nav-toggle:hover{background:var(--brand-100);}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:16px 0 22px;
}
.mobile-drawer.is-open{display:block;}
.drawer-tabs{display:flex;flex-wrap:wrap;gap:8px;}
.drawer-foot{margin-top:16px;display:flex;flex-direction:column;gap:10px;}

/* Hero */
.hero{
  position:relative;
  padding-top:36px;padding-bottom:36px;
  background:
    radial-gradient(1200px 380px at 12% -10%, #EEF3FD 0%, rgba(255,255,255,0) 62%),
    linear-gradient(180deg,#FFFFFF 0%,#F8FAFE 100%);
  overflow:hidden;
}
@media(min-width:1024px){.hero{padding-top:64px;padding-bottom:56px;}}
.hero-grid{display:grid;gap:32px;align-items:center;}
@media(min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:48px;}}
.hero-title{margin-top:16px;}
.hero-title em{
  font-style:normal;
  color:var(--brand-600);
  box-shadow:inset 0 -10px 0 rgba(227,236,251,.9);
}
.hero-lead{margin-top:18px;max-width:32em;font-size:16.5px;line-height:1.85;color:var(--ink-500);}
.hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}
.hero-facts{
  margin-top:22px;display:flex;flex-wrap:wrap;gap:10px 22px;
  font-size:13.5px;color:var(--ink-500);
}
.hero-facts span{display:inline-flex;align-items:center;gap:7px;}
.hero-facts i{
  width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;
}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;border-radius:20px;overflow:hidden;
  background:#E9EFF9;
  box-shadow:0 18px 40px -24px rgba(16,39,80,.45);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.hero-figure::after{
  content:"";position:absolute;inset:0;background:rgba(255,255,255,.08);
  pointer-events:none;
}
.hero-float{
  position:absolute;left:14px;bottom:14px;right:14px;
  background:rgba(255,255,255,.97);
  border-radius:14px;
  padding:14px 16px;
  box-shadow:0 10px 26px -14px rgba(16,39,80,.4);
}
@media(min-width:640px){.hero-float{left:auto;bottom:18px;right:18px;width:270px;}}
.hero-float-title{
  display:flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;color:var(--ink-900);
}
.hero-float-title i{
  width:8px;height:8px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(14,147,132,.16);
}
.hero-float-list{margin-top:10px;display:grid;gap:8px;}
.hero-float-list li{
  display:flex;align-items:center;gap:8px;
  font-size:12.5px;color:var(--ink-500);
}
.hero-float-list b{
  display:inline-flex;align-items:center;justify-content:center;
  width:20px;height:20px;border-radius:6px;
  background:var(--accent-soft);color:#0B6E63;
  font-size:11px;font-weight:700;flex:none;
}
.hero-bar{
  margin-top:34px;
  display:grid;gap:14px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:18px 20px;
  box-shadow:var(--shadow-card);
}
@media(min-width:768px){.hero-bar{grid-template-columns:repeat(3,1fr);gap:0;}}
.hero-bar-item{display:flex;flex-direction:column;gap:2px;}
@media(min-width:768px){
  .hero-bar-item{padding:0 22px;}
  .hero-bar-item+.hero-bar-item{border-left:1px solid var(--line);}
  .hero-bar-item:first-child{padding-left:0;}
}
.hero-bar-num{
  font-size:clamp(22px,2.4vw,28px);font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:-0.5px;line-height:1.2;
}
.hero-bar-label{font-size:13px;color:var(--ink-500);}

/* 三步上手 */
.steps-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;}
.steps-track{
  margin-top:34px;
  display:grid;gap:22px;
  position:relative;
}
@media(min-width:900px){.steps-track{grid-template-columns:repeat(3,1fr);gap:28px;}}
.step{
  position:relative;
  background:#fff;
  border-radius:var(--radius-card);
  padding:24px 22px 22px;
  box-shadow:var(--shadow-card);
  transition:box-shadow .25s ease,transform .25s ease;
}
.step:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  padding:4px 12px;border-radius:999px;
  background:var(--accent-soft);color:#0B6E63;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  font-variant-numeric:tabular-nums;
}
.step h3{margin-top:14px;font-size:19px;font-weight:600;color:var(--ink-900);}
.step p{margin-top:8px;font-size:14.5px;line-height:1.8;color:var(--ink-500);}
.step .link-arrow{margin-top:14px;}
.step-connector{display:none;}
@media(min-width:900px){
  .step-connector{
    display:block;position:absolute;top:38px;right:-24px;
    width:20px;height:1px;border-top:1px dashed #C9D8EF;
  }
}

/* 支持范围清单 */
.scope-grid{display:grid;gap:20px;margin-top:32px;}
@media(min-width:768px){.scope-grid{grid-template-columns:1fr 1fr;gap:24px;}}
.scope-item{
  display:flex;gap:14px;
  background:#fff;border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-card);
}
.scope-icon{
  flex:none;width:40px;height:40px;border-radius:11px;
  background:var(--brand-50);color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;
}
.scope-item h3{font-size:16.5px;font-weight:600;color:var(--ink-900);}
.scope-item p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--ink-500);}

/* 案例证明 非对称 */
.proof-grid{display:grid;gap:28px;}
@media(min-width:1024px){.proof-grid{grid-template-columns:5fr 7fr;gap:40px;align-items:start;}}
.proof-aside{position:static;}
@media(min-width:1024px){.proof-aside{position:sticky;top:96px;}}
.proof-metrics{margin-top:24px;display:grid;gap:14px;grid-template-columns:1fr 1fr;}
.metric{
  background:var(--brand-50);border-radius:12px;padding:14px 16px;
}
.metric b{
  display:block;font-size:24px;font-weight:700;color:var(--brand-700);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric span{font-size:12.5px;color:var(--ink-500);}
.proof-cards{display:grid;gap:16px;}
@media(min-width:768px){.proof-cards{grid-template-columns:1fr 1fr;}}
.proof-card{
  overflow:hidden;background:#fff;border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:box-shadow .25s ease,transform .25s ease;
  display:flex;flex-direction:column;
}
.proof-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.proof-card img{width:100%;object-fit:cover;aspect-ratio:16/9;background:#E9EFF9;}
.proof-card.is-wide{grid-column:1/-1;}
@media(min-width:768px){.proof-card.is-wide img{aspect-ratio:2/1;}}
.proof-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;}
.proof-body h3{font-size:17.5px;font-weight:600;color:var(--ink-900);line-height:1.5;}
.proof-body p{font-size:14px;color:var(--ink-500);line-height:1.75;}
.proof-num{
  margin-top:4px;display:flex;align-items:baseline;gap:8px;
  font-size:13px;color:var(--ink-300);
}
.proof-num b{
  font-size:20px;font-weight:700;color:var(--brand-600);
  font-variant-numeric:tabular-nums;
}
.proof-note{margin-top:16px;font-size:12.5px;color:var(--ink-300);}

/* FAQ */
.faq-grid{display:grid;gap:28px;}
@media(min-width:1024px){.faq-grid{grid-template-columns:4fr 8fr;gap:40px;align-items:start;}}
.faq-aside{position:static;}
@media(min-width:1024px){.faq-aside{position:sticky;top:96px;}}
.contact-card{
  margin-top:22px;background:#fff;border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-card);
}
.contact-card h3{font-size:15.5px;font-weight:600;color:var(--ink-900);}
.contact-card p{margin-top:8px;font-size:13.5px;color:var(--ink-500);line-height:1.75;}
.contact-line{
  margin-top:12px;display:flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--ink-700);font-variant-numeric:tabular-nums;
}
.faq-list{display:grid;gap:10px;}
.faq-item{
  background:#fff;border-radius:14px;
  box-shadow:var(--shadow-card);
  border:1px solid transparent;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:var(--brand-100);box-shadow:var(--shadow-hover);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:transparent;border:0;text-align:left;
  font-size:15.5px;font-weight:600;color:var(--ink-900);line-height:1.6;
}
.faq-q:hover{color:var(--brand-600);}
.faq-arrow{
  flex:none;width:26px;height:26px;border-radius:50%;
  background:var(--brand-50);color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform .25s ease,background-color .2s ease;
}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);background:var(--brand-100);}
.faq-a{display:none;padding:0 20px 20px;font-size:14.5px;line-height:1.85;color:var(--ink-500);}
.faq-item.is-open .faq-a{display:block;}

/* CTA + 表单 */
.cta-panel{
  background:var(--brand-50);
  border-radius:20px;
  padding:28px 22px;
}
@media(min-width:768px){.cta-panel{padding:40px;}}
.cta-grid{display:grid;gap:28px;}
@media(min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:48px;align-items:center;}}
.cta-points{margin-top:22px;display:grid;gap:12px;}
.cta-points li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-700);line-height:1.7;}
.cta-points i{
  flex:none;margin-top:6px;width:16px;height:16px;border-radius:50%;
  background:#fff;color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:10px;font-weight:700;
}
.form-card{
  background:#fff;border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-card);
}
@media(min-width:768px){.form-card{padding:26px;}}
.form-card h3{font-size:18px;font-weight:600;color:var(--ink-900);}
.form-card > p{margin-top:6px;font-size:13.5px;color:var(--ink-500);}
.form-grid{margin-top:18px;display:grid;gap:14px;}
@media(min-width:640px){.form-grid{grid-template-columns:1fr 1fr;}.form-field.full{grid-column:1/-1;}}
.form-field{display:flex;flex-direction:column;gap:6px;}
.form-field label{font-size:13px;color:var(--ink-500);font-weight:500;}
.form-field label b{color:var(--warm);font-weight:600;}
.form-field input,.form-field textarea{
  width:100%;
  padding:11px 13px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:#fff;
  color:var(--ink-900);
  font-size:14.5px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--ink-300);}
.form-field input:focus,.form-field textarea:focus{
  outline:none;border-color:var(--brand-500);
  box-shadow:0 0 0 3px var(--brand-100);
}
.form-field textarea{resize:vertical;min-height:88px;}
.form-tip{margin-top:12px;font-size:12.5px;color:var(--ink-300);line-height:1.7;}

/* 最新信息 */
.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;}
.news-grid{margin-top:30px;display:grid;gap:20px;}
@media(min-width:640px){.news-grid{grid-template-columns:1fr 1fr;}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.news-card{
  display:flex;flex-direction:column;
  background:#fff;border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:box-shadow .25s ease,transform .25s ease;
}
.news-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.news-thumb{position:relative;background:#E9EFF9;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-thumb .chip{position:absolute;left:12px;top:12px;background:#fff;color:var(--brand-700);box-shadow:0 4px 10px -6px rgba(16,39,80,.4);}
.news-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.news-body h3{
  font-size:16.5px;font-weight:600;color:var(--ink-900);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3 a:hover{color:var(--brand-600);}
.news-body p{
  font-size:14px;color:var(--ink-500);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:var(--ink-300);
}
.news-meta time{display:inline-flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums;}
.empty-card{
  margin-top:30px;
  border:1px dashed #CBD9EE;
  border-radius:var(--radius-card);
  background:#fff;
  padding:44px 24px;
  text-align:center;
}
.empty-card .empty-icon{
  width:52px;height:52px;margin:0 auto 14px;border-radius:14px;
  background:var(--brand-50);color:var(--brand-500);
  display:flex;align-items:center;justify-content:center;
}
.empty-card p{font-size:14.5px;color:var(--ink-500);}

/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--line);}
.footer-top{padding:44px 0 32px;}
.footer-grid{display:grid;gap:28px;}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;}
.footer-desc{margin-top:14px;font-size:13.5px;line-height:1.85;color:var(--ink-500);max-width:30em;}
.footer-title{font-size:14px;font-weight:700;color:var(--ink-900);letter-spacing:.02em;}
.footer-links{margin-top:14px;display:grid;gap:10px;}
.footer-links a{font-size:13.5px;color:var(--ink-500);transition:color .2s ease;}
.footer-links a:hover{color:var(--brand-600);}
.footer-contact{margin-top:14px;display:grid;gap:10px;font-size:13.5px;color:var(--ink-500);}
.footer-contact span{display:inline-flex;align-items:center;gap:8px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:16px 0 22px;
  display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--ink-300);
}
.footer-bottom a{color:var(--ink-300);}
.footer-bottom a:hover{color:var(--brand-600);}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .3s ease,transform .3s ease;}
.reveal.is-in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  .card-hover:hover,.step:hover,.proof-card:hover,.news-card:hover{transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --brand-700:#17439C;
  --brand-600:#1E56C8;
  --brand-500:#2F6BE0;
  --brand-100:#E3ECFB;
  --brand-50:#F2F6FE;
  --accent:#0E9384;
  --warm:#E8873A;
  --ink-900:#0E1B2E;
  --ink-700:#2A3B52;
  --ink-500:#5B6B80;
  --ink-300:#9AA7B8;
  --line:#E4EAF3;
  --card:#FFFFFF;
  --surface:#F6F8FC;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 2px 4px rgba(16,39,80,.04),0 12px 28px -12px rgba(16,39,80,.12);
  --shadow-hover:0 8px 18px -8px rgba(16,39,80,.18);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:#fff;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.article-layout{max-width:1160px}
.nums{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-700));
  color:#fff;font-weight:800;font-size:15px;letter-spacing:.6px;
  box-shadow:0 6px 16px -10px rgba(23,67,156,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;gap:2px}
.brand-cn{font-size:16px;font-weight:700;color:var(--ink-900);letter-spacing:.2px}
.brand-sub{font-size:11px;color:var(--ink-300);letter-spacing:.2px}
.nav-tabs{display:flex;align-items:center;gap:6px;margin-left:12px;overflow-x:auto;scrollbar-width:none}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tab{
  padding:7px 14px;border-radius:999px;font-size:14px;line-height:1.4;
  color:var(--ink-700);background:var(--brand-50);white-space:nowrap;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.nav-tab:hover{background:var(--brand-100);color:var(--brand-700)}
.nav-tab:active{transform:translateY(1px)}
.nav-tab.is-active{background:var(--brand-600);color:#fff;box-shadow:0 6px 14px -8px rgba(30,86,200,.85)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;padding-left:18px;border-left:1px solid var(--line);flex-shrink:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:13px 24px;
  border-radius:var(--radius-btn);transition:all .18s ease;white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 22px -14px rgba(30,86,200,.9)}
.btn-primary:hover{background:var(--brand-700);box-shadow:0 12px 24px -12px rgba(23,67,156,.85);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px -8px rgba(23,67,156,.8)}
.btn-ghost{background:#fff;color:var(--brand-600);border:1px solid #D7E2F5}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-100)}
.btn-sm{padding:10px 18px;font-size:14px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);color:var(--ink-700);align-items:center;justify-content:center;background:#fff}
.nav-toggle:hover{background:var(--brand-50);color:var(--brand-700)}
.mobile-drawer{
  display:none;position:fixed;inset:68px 0 0 0;z-index:55;background:#fff;
  padding:24px 20px 40px;overflow-y:auto;
}
.mobile-drawer.open{display:block}
.drawer-tabs{display:flex;flex-direction:column;gap:10px}
.drawer-tabs .nav-tab{padding:14px 18px;border-radius:12px;font-size:15px}
.drawer-cta{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.drawer-cta .btn{width:100%}

/* ---------- Breadcrumb ---------- */
.article-top{padding:32px 0 0;background:linear-gradient(180deg,var(--brand-50) 0%,rgba(242,246,254,0) 100%)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);flex-wrap:wrap}
.breadcrumb a{color:var(--ink-500);transition:color .16s ease}
.breadcrumb a:hover{color:var(--brand-600)}
.crumb-sep{color:var(--ink-300)}
.crumb-current{color:var(--ink-900);font-weight:500}

.article-head{padding:22px 0 30px;max-width:820px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:var(--brand-100);color:var(--brand-700);letter-spacing:.2px;
}
.chip-accent{background:rgba(14,147,132,.1);color:var(--accent)}
.article-title{
  margin-top:16px;
  font-size:clamp(28px,4.2vw,46px);
  line-height:1.22;font-weight:700;letter-spacing:-.5px;color:var(--ink-900);
}
.meta-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:20px;font-size:13px;color:var(--ink-500)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item svg{color:var(--ink-300)}

/* ---------- Article layout ---------- */
.article-wrap{padding:8px 0 96px}
.article-layout{
  margin:0 auto;
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:56px;
  align-items:start;
}
.article-main{min-width:0}
.article-side{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px}

.mobile-toc{display:none;margin-bottom:24px}
.mobile-toc-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px;border-radius:12px;background:var(--brand-50);
  font-size:14px;font-weight:600;color:var(--ink-900);border:1px solid var(--line);
}
.mobile-toc-btn svg{transition:transform .22s ease;color:var(--brand-600)}
.mobile-toc-btn.open svg{transform:rotate(180deg)}
.mobile-toc-body{display:none;padding:8px 0 0}
.mobile-toc-body.open{display:block}

.card{
  background:var(--card);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}
.toc-card{padding:22px 20px}
.toc-title{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:14px}
.toc-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand-600);display:inline-block}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:52vh;overflow-y:auto}
.toc-list::-webkit-scrollbar{width:4px}
.toc-list::-webkit-scrollbar-thumb{background:var(--brand-100);border-radius:4px}
.toc-link{
  display:block;padding:7px 12px;border-radius:8px;font-size:13.5px;line-height:1.55;
  color:var(--ink-500);border-left:2px solid transparent;
  transition:all .16s ease;
}
.toc-link:hover{color:var(--brand-700);background:var(--brand-50)}
.toc-link.lv-3{padding-left:26px;font-size:13px}
.toc-link.is-active{color:var(--brand-700);font-weight:600;background:var(--brand-50);border-left-color:var(--brand-600)}
.toc-empty{font-size:13px;color:var(--ink-300);padding:6px 2px;line-height:1.7}

.side-card{padding:20px;background:linear-gradient(160deg,var(--brand-50),#fff);border:1px solid var(--brand-100)}
.side-card h3{font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.side-card p{font-size:13.5px;color:var(--ink-500);line-height:1.7;margin-bottom:14px}
.side-card .btn{width:100%}

/* ---------- Prose ---------- */
.prose-cn{max-width:760px;font-size:16px;line-height:1.8;color:var(--ink-700)}
.prose-cn>*+*{margin-top:18px}
.prose-cn h2{
  position:relative;font-size:clamp(20px,2.4vw,24px);line-height:1.45;font-weight:700;
  color:var(--ink-900);padding-left:14px;margin-top:44px;margin-bottom:6px;letter-spacing:-.2px;
}
.prose-cn h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:1.05em;
  border-radius:2px;background:var(--brand-600);
}
.prose-cn h3{font-size:18px;line-height:1.55;font-weight:600;color:var(--ink-900);margin-top:30px;margin-bottom:4px}
.prose-cn p{margin-top:18px}
.prose-cn a{color:var(--brand-600);border-bottom:1px solid var(--brand-100);transition:border-color .16s ease,color .16s ease}
.prose-cn a:hover{color:var(--brand-700);border-bottom-color:var(--brand-600)}
.prose-cn strong{color:var(--ink-900);font-weight:600}
.prose-cn ul,.prose-cn ol{margin-top:16px;padding-left:4px;display:flex;flex-direction:column;gap:10px}
.prose-cn ul li,.prose-cn ol li{position:relative;padding-left:22px;line-height:1.78}
.prose-cn ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--brand-500);
}
.prose-cn ol{counter-reset:li}
.prose-cn ol li{counter-increment:li}
.prose-cn ol li::before{
  content:counter(li);position:absolute;left:0;top:.34em;
  width:18px;height:18px;border-radius:50%;background:var(--brand-100);color:var(--brand-700);
  font-size:11px;font-weight:700;line-height:18px;text-align:center;
}
.prose-cn blockquote{
  margin-top:22px;padding:16px 20px;border-radius:0 12px 12px 0;
  background:var(--brand-50);border-left:3px solid var(--brand-500);
  color:var(--ink-700);font-size:15.5px;
}
.prose-cn blockquote p{margin:0}
.prose-cn img{border-radius:var(--radius-img);margin-top:22px;background:#E9EFF9}
.prose-cn figure{margin:22px 0 0}
.prose-cn figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:10px}
.prose-cn table{width:100%;border-collapse:collapse;margin-top:22px;font-size:14.5px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.prose-cn th,.prose-cn td{padding:11px 14px;border:1px solid var(--line);text-align:left;font-variant-numeric:tabular-nums}
.prose-cn th{background:var(--brand-50);color:var(--ink-900);font-weight:600}
.prose-cn tbody tr:nth-child(even){background:#FAFBFE}
.prose-cn pre{
  margin-top:22px;padding:16px 18px;border-radius:12px;background:#F4F6FA;
  border:1px solid var(--line);overflow-x:auto;font-size:13.5px;line-height:1.7;
}
.prose-cn code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;background:#F1F4FA;padding:2px 6px;border-radius:6px;color:var(--brand-700)}
.prose-cn pre code{background:none;padding:0;color:var(--ink-700)}
.prose-cn hr{border:0;border-top:1px solid var(--line);margin:32px 0}

/* ---------- Empty state ---------- */
.empty-state{
  max-width:760px;padding:56px 32px;text-align:center;border-radius:var(--radius-card);
  border:1px dashed #CFDCEE;background:#FBFCFE;
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;background:var(--brand-100);
  display:flex;align-items:center;justify-content:center;color:var(--brand-600);
}
.empty-state h2{font-size:20px;font-weight:700;color:var(--ink-900);margin-bottom:10px}
.empty-state p{font-size:14.5px;color:var(--ink-500);line-height:1.75;margin-bottom:22px}

/* ---------- Related / next ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:56px}
.post-nav-item{
  display:flex;flex-direction:column;gap:6px;padding:20px 22px;border-radius:var(--radius-card);
  background:#fff;box-shadow:var(--shadow-card);transition:all .18s ease;
}
.post-nav-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.post-nav-label{font-size:12.5px;color:var(--ink-300);display:flex;align-items:center;gap:6px}
.post-nav-title{font-size:15px;font-weight:600;color:var(--ink-900);line-height:1.55}
.post-nav-item.next{text-align:right;align-items:flex-end}

.related{margin-top:64px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;flex-wrap:wrap}
.section-title{font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--ink-900);letter-spacing:-.3px}
.section-sub{font-size:14px;color:var(--ink-500);margin-top:6px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600)}
.link-arrow svg{transition:transform .18s ease}
.link-arrow:hover svg{transform:translateX(2px)}
.link-arrow:hover{color:var(--brand-700)}

.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;transition:all .18s ease;
}
.rel-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.rel-thumb{position:relative;aspect-ratio:16/9;background:#E9EFF9;overflow:hidden}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-tag{align-self:flex-start}
.rel-title{font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.55;transition:color .16s ease}
.rel-card:hover .rel-title{color:var(--brand-700)}
.rel-desc{font-size:13.5px;color:var(--ink-500);line-height:1.7}
.rel-more{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px}
.rel-card:hover .rel-more svg{transform:translateX(2px)}
.rel-more svg{transition:transform .18s ease}

.back-actions{display:flex;gap:14px;margin-top:48px;flex-wrap:wrap}

/* ---------- CTA band ---------- */
.cta-band{
  margin:0 0 96px;
}
.cta-panel{
  border-radius:20px;
  background:linear-gradient(120deg,var(--brand-50) 0%,#F8FAFF 60%,#FFFFFF 100%);
  border:1px solid var(--brand-100);
  padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-panel h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--ink-900);letter-spacing:-.3px}
.cta-panel p{font-size:14.5px;color:var(--ink-500);margin-top:8px;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line)}
.footer-top{padding:56px 0 40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-desc{font-size:13.5px;color:var(--ink-500);line-height:1.75;margin-top:16px;max-width:340px}
.footer-title{font-size:14px;font-weight:700;color:var(--ink-900);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:13.5px;color:var(--ink-500);transition:color .16s ease}
.footer-links a:hover{color:var(--brand-600)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact span{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-500)}
.footer-contact svg{color:var(--brand-500);flex-shrink:0}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-300);
}
.footer-bottom a{color:var(--ink-500)}
.footer-bottom a:hover{color:var(--brand-600)}

/* ---------- Animation ---------- */
.fade-up{animation:fadeUp .42s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 28px}
  .nav-tabs{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-primary{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .article-side{display:none}
  .mobile-toc{display:block}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-panel{padding:32px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .header-inner{gap:12px}
  .brand-sub{display:none}
  .article-top{padding-top:24px}
  .article-head{padding:18px 0 24px}
  .article-title{font-size:26px;letter-spacing:-.2px}
  .meta-row{gap:12px}
  .article-wrap{padding-bottom:64px}
  .related{margin-top:48px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .post-nav{grid-template-columns:minmax(0,1fr);margin-top:40px}
  .post-nav-item.next{text-align:left;align-items:flex-start}
  .cta-band{margin-bottom:64px}
  .cta-panel{padding:26px 22px;border-radius:16px}
  .cta-actions .btn{width:100%}
  .back-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-top{padding:40px 0 28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .prose-cn{font-size:15.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .rel-card:hover,.post-nav-item:hover,.btn-primary:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --brand-700:#17439C;
  --brand-600:#1E56C8;
  --brand-500:#2F6BE0;
  --brand-100:#E3ECFB;
  --brand-50:#F2F6FE;
  --accent:#0E9384;
  --accent-soft:#E4F5F2;
  --warm:#E8873A;
  --ink-900:#0E1B2E;
  --ink-700:#2A3B52;
  --ink-500:#5B6B80;
  --ink-300:#9AA7B8;
  --line:#E4EAF3;
  --surface:#FFFFFF;
  --surface-2:#F6F8FC;
  --img-bg:#E9EFF9;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 2px 4px rgba(16,39,80,.04),0 12px 28px -12px rgba(16,39,80,.12);
  --shadow-hover:0 8px 18px -8px rgba(16,39,80,.18);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,textarea{font:inherit;color:var(--ink-900);width:100%}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}
body .container{width:100%;max-width:var(--container);margin-left:auto;margin-right:auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){body .container{padding-left:28px;padding-right:28px}}
@media (min-width:1024px){body .container{padding-left:40px;padding-right:40px}}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:16px;min-height:68px}
.site-logo,.footer-brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:var(--brand-600);color:#fff;font-size:14px;font-weight:700;letter-spacing:.02em;flex:none;transition:background-color .2s}
.site-logo:hover .brand-mark,.footer-brand:hover .brand-mark{background:var(--brand-700)}
.brand-text{display:block;line-height:1.2}
.brand-cn{display:block;font-size:16px;font-weight:700;color:var(--ink-900);letter-spacing:-.2px}
.brand-sub{display:block;font-size:12px;color:var(--ink-500);margin-top:3px;letter-spacing:.01em}
.nav-tabs{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tab{display:inline-flex;align-items:center;padding:8px 14px;border-radius:999px;font-size:14px;font-weight:500;color:var(--ink-700);background:var(--brand-50);white-space:nowrap;transition:background-color .2s,color .2s,box-shadow .2s}
.nav-tab:hover{background:var(--brand-100);color:var(--brand-700)}
.nav-tab.is-active{background:var(--brand-600);color:#fff;box-shadow:0 6px 14px -8px rgba(30,86,200,.7)}
.header-actions{display:flex;align-items:center;gap:14px;flex:none}
.nav-divider{width:1px;height:24px;background:var(--line);display:inline-block}
.nav-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-700);transition:background-color .2s,color .2s,border-color .2s}
.nav-toggle:hover{background:var(--brand-50);color:var(--brand-600);border-color:var(--brand-100)}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff;padding:8px 0 20px}
.mobile-panel.is-open{display:block}
.mobile-panel a.m-link{display:block;padding:13px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-700)}
.mobile-panel a.m-link:hover{color:var(--brand-600)}
.mobile-panel a.m-link.is-active{color:var(--brand-600);font-weight:600}
.mobile-cta{display:flex;width:100%;margin-top:18px}
@media (max-width:1023px){
  .nav-tabs{display:none}
  .header-actions .btn{display:none}
  .nav-divider{display:none}
  .nav-toggle{display:inline-flex}
}
@media (max-width:520px){
  .brand-sub{display:none}
  .brand-cn{font-size:15px}
}

/* ---------- Buttons & chips ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;line-height:1.4;border:1px solid transparent;white-space:nowrap;transition:background-color .2s,color .2s,border-color .2s,box-shadow .2s,transform .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 8px 18px -10px rgba(30,86,200,.75)}
.btn-primary:hover{background:var(--brand-700);box-shadow:0 12px 24px -12px rgba(23,67,156,.8)}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:#D7E2F5}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-100)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600)}
.link-arrow svg{transition:transform .2s}
.link-arrow:hover{color:var(--brand-700)}
.link-arrow:hover svg{transform:translateX(3px)}
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:13px;font-weight:500;background:var(--brand-50);color:var(--brand-700);border:1px solid var(--brand-100)}
.chip-accent{background:var(--accent-soft);color:#0B7A6E;border-color:#CDEBE6}
.chip-warm{background:#FDF1E7;color:#A65A18;border-color:#F6DDC7}

/* ---------- Sections ---------- */
.section{padding-top:44px;padding-bottom:44px}
@media (min-width:768px){.section{padding-top:64px;padding-bottom:64px}}
@media (min-width:1024px){.section{padding-top:96px;padding-bottom:96px}}
.section--soft{background:var(--surface-2)}
.section-head{max-width:760px;margin-bottom:28px}
.section-title{position:relative;padding-left:16px;font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;color:var(--ink-900);letter-spacing:-.3px}
.section-title::before{content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:4px;border-radius:4px;background:var(--brand-600)}
.section-desc{margin-top:14px;font-size:15px;line-height:1.75;color:var(--ink-500)}

/* ---------- Hero ---------- */
.hero{padding-top:28px;padding-bottom:40px;background:linear-gradient(180deg,#FFFFFF 0%,#F8FAFE 100%)}
@media (min-width:1024px){.hero{padding-top:40px;padding-bottom:64px}}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:var(--ink-300)}
.breadcrumb .current{color:var(--ink-900);font-weight:600}
.hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:48px}}
.hero-title{margin-top:18px;font-size:clamp(26px,3.6vw,40px);line-height:1.24;font-weight:700;letter-spacing:-.5px;color:var(--ink-900)}
.hero-sub{margin-top:16px;max-width:560px;font-size:16px;line-height:1.75;color:var(--ink-500)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-points{margin-top:26px;display:grid;gap:10px}
.hero-points li{display:flex;align-items:flex-start;gap:9px;font-size:14px;color:var(--ink-700)}
.hero-points svg{flex:none;margin-top:4px;color:var(--accent)}
.hero-media{position:relative;border-radius:20px;overflow:hidden;background:var(--img-bg);box-shadow:var(--shadow-card)}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(255,255,255,.08);pointer-events:none}
.hero-float{position:absolute;left:16px;bottom:16px;z-index:2;display:flex;align-items:center;gap:10px;max-width:280px;padding:12px 16px;background:#fff;border-radius:14px;box-shadow:0 12px 30px -14px rgba(16,39,80,.4)}
.hero-float strong{display:block;font-size:13px;font-weight:600;color:var(--ink-900);line-height:1.4}
.hero-float span{display:block;font-size:12px;color:var(--ink-500);line-height:1.4}
.dot{width:9px;height:9px;flex:none;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(14,147,132,.15)}
.stat-bar{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
@media (min-width:900px){.stat-bar{grid-template-columns:repeat(4,1fr)}}
.stat-num{font-size:24px;font-weight:700;line-height:1.3;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.2px}
.stat-label{margin-top:4px;font-size:13px;line-height:1.6;color:var(--ink-500)}

/* ---------- Timeline ---------- */
.timeline{position:relative;display:grid;grid-template-columns:1fr;gap:0}
.timeline::before{content:"";position:absolute;left:21px;top:10px;bottom:10px;border-left:2px dashed var(--brand-100)}
.step{position:relative;padding:0 0 30px 64px}
.step:last-child{padding-bottom:0}
.step-num{position:absolute;left:0;top:0;display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.02em}
.step h3{font-size:18px;font-weight:600;color:var(--ink-900);line-height:1.5}
.step p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--ink-500);max-width:34em}
.step .link-arrow{margin-top:12px}
@media (min-width:1024px){
  .timeline{grid-template-columns:repeat(4,1fr);gap:24px}
  .timeline::before{left:26px;right:26px;top:22px;bottom:auto;border-left:0;border-top:2px dashed var(--brand-100)}
  .step{padding:0 12px 0 0}
  .step:last-child{padding-right:0}
  .step-num{position:static;margin-bottom:18px}
}

/* ---------- Cards ---------- */
.card{background:#fff;border:1px solid rgba(228,234,243,.8);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:24px;transition:box-shadow .25s,transform .25s,border-color .25s}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:var(--brand-100)}
.grid-3{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr);gap:24px}}
.card-index{display:inline-flex;align-items:center;justify-content:center;min-width:34px;height:26px;padding:0 8px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:700;font-variant-numeric:tabular-nums}
.card h3{margin-top:14px;font-size:19px;font-weight:600;color:var(--ink-900);line-height:1.45}
.card p{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-500)}
.card-list{margin-top:16px;display:grid;gap:9px}
.card-list li{position:relative;padding-left:19px;font-size:14px;line-height:1.7;color:var(--ink-700)}
.card-list li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:50%;background:var(--brand-500)}
.card .link-arrow{margin-top:18px}

/* ---------- Dark band ---------- */
.band{position:relative;overflow:hidden;border-radius:24px;background:var(--brand-700);color:#fff;padding:32px 24px}
@media (min-width:768px){.band{padding:44px 40px}}
.band::before{content:"";position:absolute;right:-40px;top:-40px;width:280px;height:280px;background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);background-size:18px 18px;opacity:.7;pointer-events:none}
.band-title{position:relative;font-size:clamp(20px,2.4vw,28px);font-weight:700;line-height:1.35;letter-spacing:-.2px}
.band-desc{position:relative;margin-top:12px;max-width:640px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72)}
.band-grid{position:relative;display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px}
@media (min-width:768px){.band-grid{grid-template-columns:repeat(3,1fr)}}
.band-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:20px}
.band-card .tag{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;background:rgba(255,255,255,.16);color:#fff}
.band-card h3{margin-top:12px;font-size:16px;font-weight:600;color:#fff;line-height:1.5}
.band-card p{margin-top:8px;font-size:13px;line-height:1.75;color:rgba(255,255,255,.72)}
.band-metrics{position:relative;display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:28px;padding-top:24px;border-top:1px solid rgba(255,255,255,.16)}
@media (min-width:768px){.band-metrics{grid-template-columns:repeat(4,1fr)}}
.band-metric .num{font-size:22px;font-weight:700;color:#8FE3D6;font-variant-numeric:tabular-nums;line-height:1.3}
.band-metric .label{margin-top:2px;font-size:12px;color:rgba(255,255,255,.68)}

/* ---------- Split / materials ---------- */
.split{display:grid;grid-template-columns:1fr;gap:26px;align-items:start}
@media (min-width:1024px){.split{grid-template-columns:1.4fr 1fr;gap:32px}}
.check-list{display:grid;gap:12px;margin-top:22px}
.check-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;line-height:1.7;color:var(--ink-700)}
.check-list svg{flex:none;margin-top:4px;color:var(--brand-600)}
.tip-card{background:#fff;border-radius:var(--radius-card);border:1px solid var(--line);box-shadow:var(--shadow-card);padding:24px}
.tip-card h3{font-size:16px;font-weight:600;color:var(--ink-900)}
.tip-list{margin-top:16px;display:grid;gap:14px}
.tip-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--ink-500)}
.tip-list .mark{flex:none;width:22px;height:22px;border-radius:7px;display:inline-flex;align-items:center;justify-content:center;background:#FDF1E7;color:#A65A18;font-size:12px;font-weight:700}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:880px}
.faq-item{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;transition:border-color .2s,box-shadow .2s}
.faq-item:hover{border-color:var(--brand-100);box-shadow:var(--shadow-card)}
.faq-num{flex:none;display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;background:var(--brand-50);color:var(--brand-600);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums}
.faq-item h3{font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6}
.faq-item p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--ink-500)}

/* ---------- CTA & form ---------- */
.cta-panel{background:var(--brand-50);border-radius:24px;padding:28px 22px;display:grid;grid-template-columns:1fr;gap:30px}
@media (min-width:1024px){.cta-panel{grid-template-columns:1fr 1fr;gap:48px;padding:48px;align-items:start}}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.32;color:var(--ink-900);letter-spacing:-.3px}
.cta-panel .lead{margin-top:14px;font-size:15px;line-height:1.8;color:var(--ink-500)}
.form-card{background:#fff;border-radius:18px;box-shadow:var(--shadow-card);padding:24px}
.form-card h3{font-size:16px;font-weight:600;color:var(--ink-900);margin-bottom:18px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:500;color:var(--ink-500);margin-bottom:6px}
.field input,.field textarea{border:1px solid var(--line);border-radius:10px;padding:11px 14px;font-size:15px;line-height:1.5;background:#fff;transition:border-color .2s,box-shadow .2s}
.field textarea{resize:vertical;min-height:88px}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-300)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
.field .hint{margin-top:6px;font-size:12px;color:var(--ink-300)}
.field .req{color:var(--warm)}
.form-note{margin-top:12px;font-size:12px;line-height:1.7;color:var(--ink-300)}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);background:#fff}
.footer-top{padding-top:48px;padding-bottom:8px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:36px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr .9fr .9fr 1.2fr;gap:32px}}
.footer-desc{margin-top:16px;max-width:340px;font-size:13px;line-height:1.8;color:var(--ink-500)}
.footer-title{font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13px;color:var(--ink-500);transition:color .2s}
.footer-links a:hover{color:var(--brand-600)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact span{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);line-height:1.6}
.footer-contact svg{flex:none;color:var(--brand-500)}
.footer-bottom{margin-top:36px;border-top:1px solid var(--line);padding-top:20px;padding-bottom:28px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:var(--ink-500)}
.footer-bottom a{color:var(--ink-500)}
.footer-bottom a:hover{color:var(--brand-600)}

/* ---------- Motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .card:hover{transform:none}
  .btn:active{transform:none}
  .link-arrow:hover svg{transform:none}
}

/* roulang page: category2 */
:root{
    --brand-700:#17439C;
    --brand-600:#1E56C8;
    --brand-500:#2F6BE0;
    --brand-100:#E3ECFB;
    --brand-50:#F2F6FE;
    --accent:#0E9384;
    --warm:#E8873A;
    --ink-900:#0E1B2E;
    --ink-700:#2A3B52;
    --ink-500:#5B6B80;
    --ink-300:#9AA7B8;
    --line:#E4EAF3;
    --line-strong:#D7E2F5;
    --bg-soft:#F6F8FC;
    --white:#FFFFFF;
    --radius-card:16px;
    --radius-img:12px;
    --radius-btn:10px;
    --shadow-card:0 2px 4px rgba(16,39,80,.04), 0 12px 28px -12px rgba(16,39,80,.12);
    --shadow-hover:0 8px 18px -8px rgba(16,39,80,.18);
    --container:1200px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;line-height:1.75;color:var(--ink-700);background:var(--white);
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  svg{display:block;}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}
  @media (max-width:1023px){.container{padding:0 28px;}}
  @media (max-width:639px){.container{padding:0 20px;}}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);
    border-bottom:1px solid var(--line);backdrop-filter:blur(10px);
  }
  .header-inner{display:flex;align-items:center;gap:18px;min-height:68px;}
  .site-brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{
    display:inline-flex;align-items:center;justify-content:center;
    width:42px;height:42px;border-radius:12px;color:#fff;
    background:linear-gradient(135deg,var(--brand-600),var(--brand-500));
    font-family:Inter,system-ui,sans-serif;font-weight:700;font-size:15px;letter-spacing:.6px;
    box-shadow:0 8px 16px -10px rgba(30,86,200,.9);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25;}
  .brand-cn{font-size:16px;font-weight:700;color:var(--ink-900);letter-spacing:-.2px;}
  .brand-sub{font-size:11.5px;color:var(--ink-500);letter-spacing:.2px;}
  .nav-tabs{
    display:flex;align-items:center;justify-content:center;gap:6px;flex:1;
    overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:4px 0;
  }
  .nav-tabs::-webkit-scrollbar{display:none;}
  .nav-tab{
    display:inline-block;padding:8px 14px;border-radius:999px;white-space:nowrap;
    font-size:14px;font-weight:500;color:var(--ink-700);background:var(--brand-50);
    transition:background .18s ease,color .18s ease,box-shadow .18s ease;
  }
  .nav-tab:hover{background:var(--brand-100);color:var(--brand-700);}
  .nav-tab:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
  .nav-tab.is-active{
    background:var(--brand-600);color:#fff;
    box-shadow:0 6px 14px -8px rgba(30,86,200,.85);
  }
  .header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;margin-left:auto;}
  .header-sep{width:1px;height:26px;background:var(--line);}
  @media (max-width:1023px){
    .header-sep{display:none;}
    .nav-tabs{justify-content:flex-start;}
  }
  @media (max-width:900px){
    .header-inner{flex-wrap:wrap;padding-top:10px;padding-bottom:10px;gap:10px;}
    .nav-tabs{order:3;width:100%;flex:0 0 100%;margin-left:0;padding:2px 0 0;}
    .header-actions{margin-left:auto;}
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--radius-btn);font-size:15px;font-weight:600;line-height:1.2;
    padding:12px 24px;transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .12s ease,border-color .18s ease;
  }
  .btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 20px -14px rgba(30,86,200,.95);}
  .btn-primary:hover{background:var(--brand-700);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
  .btn-primary:active{transform:translateY(1px);box-shadow:none;}
  .btn-primary:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
  .btn-ghost{background:#fff;color:var(--brand-600);border:1px solid var(--line-strong);}
  .btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-100);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn-ghost:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
  .btn-sm{padding:9px 16px;font-size:14px;border-radius:9px;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);
    transition:color .18s ease;
  }
  .link-arrow svg{transition:transform .18s ease;}
  .link-arrow:hover{color:var(--brand-700);}
  .link-arrow:hover svg{transform:translateX(3px);}
  .link-arrow:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:6px;}

  /* ---------- Hero ---------- */
  .hero{padding:44px 0 0;background:linear-gradient(180deg,var(--brand-50) 0%,#FFFFFF 78%);}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:20px;}
  .breadcrumb a{color:var(--ink-500);transition:color .18s ease;}
  .breadcrumb a:hover{color:var(--brand-600);}
  .breadcrumb .sep{color:var(--ink-300);}
  .breadcrumb .current{color:var(--ink-900);font-weight:500;}
  .hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;}
  .hero-title{
    font-size:clamp(28px,4.2vw,44px);line-height:1.22;font-weight:700;
    letter-spacing:-.5px;color:var(--ink-900);
  }
  .hero-sub{margin-top:18px;font-size:16px;line-height:1.8;color:var(--ink-500);max-width:620px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
  .chip{
    display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;
    font-size:13px;font-weight:500;color:var(--brand-700);background:var(--brand-100);
  }
  .chip-accent{color:var(--accent);background:rgba(14,147,132,.1);}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .hero-visual{position:relative;}
  .hero-visual img{
    width:100%;height:344px;object-fit:cover;border-radius:20px;background:#E9EFF9;
    box-shadow:var(--shadow-card);
  }
  .hero-panel{
    position:absolute;left:16px;right:16px;bottom:16px;
    background:rgba(255,255,255,.96);border-radius:14px;padding:14px 16px;
    box-shadow:0 16px 32px -18px rgba(16,39,80,.42);
    backdrop-filter:blur(6px);
  }
  .hero-panel-title{
    font-size:12.5px;font-weight:600;color:var(--ink-500);letter-spacing:.4px;
    text-transform:uppercase;margin-bottom:10px;
  }
  .hero-panel ul{display:flex;flex-direction:column;gap:8px;}
  .hero-panel li{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--ink-700);}
  .dot-ico{
    width:18px;height:18px;border-radius:50%;flex-shrink:0;
    display:inline-flex;align-items:center;justify-content:center;
    background:rgba(14,147,132,.12);color:var(--accent);
  }
  .stat-bar{
    display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
    border-top:1px solid var(--line);margin-top:40px;padding:24px 0 32px;
  }
  .stat-num{
    font-family:Inter,system-ui,sans-serif;font-size:26px;font-weight:700;
    color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.2;
  }
  .stat-label{font-size:13px;color:var(--ink-500);margin-top:4px;}
  @media (max-width:900px){
    .hero-grid{grid-template-columns:1fr;gap:32px;}
    .hero-visual img{height:280px;}
  }
  @media (max-width:560px){
    .hero-visual img{height:220px;}
    .stat-bar{grid-template-columns:1fr;gap:16px;padding:20px 0 26px;}
    .hero-panel{position:static;margin-top:12px;}
  }

  /* ---------- 通用板块 ---------- */
  .section{padding:88px 0;}
  .section--soft{background:var(--bg-soft);}
  .section--tight{padding:64px 0;}
  @media (max-width:1023px){.section{padding:64px 0;} .section--tight{padding:48px 0;}}
  @media (max-width:639px){.section{padding:44px 0;} .section--tight{padding:36px 0;}}
  .section-head{max-width:740px;margin-bottom:38px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
    font-size:13px;font-weight:600;color:var(--brand-600);background:var(--brand-50);margin-bottom:14px;
  }
  .section-head h2{
    font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;
    color:var(--ink-900);letter-spacing:-.3px;
  }
  .section-head p{margin-top:12px;font-size:15.5px;line-height:1.8;color:var(--ink-500);}

  /* ---------- 筛选 chip ---------- */
  .filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
  .filter-chip{
    padding:8px 16px;border-radius:999px;font-size:14px;font-weight:500;
    color:var(--ink-700);background:#fff;border:1px solid var(--line);
    transition:background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
  }
  .filter-chip:hover{border-color:var(--brand-100);background:var(--brand-50);color:var(--brand-700);}
  .filter-chip:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
  .filter-chip.is-active{
    background:var(--brand-600);border-color:var(--brand-600);color:#fff;
    box-shadow:0 8px 16px -12px rgba(30,86,200,.9);
  }

  /* ---------- 能力列表 ---------- */
  .cap-list{display:flex;flex-direction:column;gap:12px;}
  .cap-item{
    display:grid;grid-template-columns:160px 1fr 44px;gap:20px;align-items:center;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:16px;transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  }
  .cap-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:var(--brand-100);}
  .cap-thumb{
    width:160px;height:100px;border-radius:var(--radius-img);overflow:hidden;background:#E9EFF9;
  }
  .cap-thumb img{width:100%;height:100%;object-fit:cover;}
  .cap-body h3{font-size:18px;font-weight:600;color:var(--ink-900);line-height:1.5;}
  .cap-body p{
    margin-top:6px;font-size:14.5px;line-height:1.7;color:var(--ink-500);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .cap-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
  .cap-tag{
    display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
    font-size:12.5px;font-weight:500;color:var(--brand-700);background:var(--brand-50);
  }
  .cap-arrow{
    width:38px;height:38px;border-radius:50%;border:1px solid var(--line);
    display:flex;align-items:center;justify-content:center;color:var(--brand-600);
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
  }
  .cap-item:hover .cap-arrow{background:var(--brand-600);border-color:var(--brand-600);color:#fff;transform:translateX(3px);}
  @media (max-width:760px){
    .cap-item{grid-template-columns:1fr;gap:14px;}
    .cap-thumb{width:100%;height:158px;}
    .cap-arrow{display:none;}
  }

  /* ---------- 参数带 ---------- */
  .param-band{
    display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  }
  .param-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:20px 18px;box-shadow:0 1px 2px rgba(16,39,80,.03);
  }
  .param-card .k{font-size:13px;color:var(--ink-500);}
  .param-card .v{
    font-family:Inter,system-ui,sans-serif;font-size:24px;font-weight:700;
    color:var(--ink-900);font-variant-numeric:tabular-nums;margin-top:6px;line-height:1.2;
  }
  .param-card .v small{font-size:13px;font-weight:500;color:var(--ink-500);margin-left:4px;}
  .param-card .note{font-size:12.5px;color:var(--ink-300);margin-top:6px;}
  @media (max-width:900px){.param-band{grid-template-columns:repeat(2,1fr);}}
  @media (max-width:520px){.param-band{grid-template-columns:1fr;}}

  /* ---------- 权限表 ---------- */
  .table-wrap{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    overflow:hidden;box-shadow:var(--shadow-card);
  }
  .table-scroll{overflow-x:auto;}
  table.role-table{width:100%;border-collapse:collapse;min-width:720px;}
  table.role-table thead th{
    text-align:left;font-size:13px;font-weight:600;color:var(--ink-500);
    background:var(--brand-50);padding:14px 18px;white-space:nowrap;
    border-bottom:1px solid var(--line);
  }
  table.role-table tbody td{
    padding:16px 18px;font-size:14.5px;color:var(--ink-700);border-bottom:1px solid var(--line);
    vertical-align:top;
  }
  table.role-table tbody tr:last-child td{border-bottom:0;}
  table.role-table tbody tr:nth-child(even){background:#FBFCFE;}
  table.role-table tbody tr:hover{background:var(--brand-50);}
  .role-name{font-weight:600;color:var(--ink-900);font-size:15px;}
  .role-sub{font-size:12.5px;color:var(--ink-300);margin-top:2px;}
  .num-cell{font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;color:var(--ink-900);font-weight:600;}

  /* ---------- 检查清单 ---------- */
  .check-panel{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:8px 24px;box-shadow:var(--shadow-card);
  }
  .check-row{
    display:grid;grid-template-columns:48px 1fr;gap:16px;align-items:start;
    padding:20px 0;border-bottom:1px dashed var(--line);
  }
  .check-row:last-child{border-bottom:0;}
  .check-num{
    display:inline-flex;align-items:center;justify-content:center;
    width:36px;height:36px;border-radius:999px;
    background:rgba(14,147,132,.1);color:var(--accent);
    font-family:Inter,system-ui,sans-serif;font-weight:700;font-size:13px;
    font-variant-numeric:tabular-nums;
  }
  .check-row h3{font-size:16.5px;font-weight:600;color:var(--ink-900);line-height:1.6;}
  .check-row p{margin-top:5px;font-size:14.5px;line-height:1.75;color:var(--ink-500);}
  @media (max-width:520px){
    .check-panel{padding:4px 18px;}
    .check-row{grid-template-columns:1fr;gap:10px;}
  }

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:10px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .faq-item[open]{border-color:var(--brand-100);box-shadow:0 10px 24px -18px rgba(16,39,80,.4);}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink-900);
    cursor:pointer;list-style:none;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";font-size:20px;line-height:1;color:var(--brand-600);
    transition:transform .2s ease;flex-shrink:0;
  }
  .faq-item[open] summary::after{transform:rotate(45deg);}
  .faq-item summary:hover{color:var(--brand-700);}
  .faq-item summary:focus-visible{outline:2px solid var(--brand-500);outline-offset:-2px;}
  .faq-answer{padding:0 20px 20px;font-size:14.5px;line-height:1.85;color:var(--ink-500);}

  /* ---------- CTA 表单 ---------- */
  .cta-wrap{background:var(--brand-50);border-radius:24px;padding:48px;border:1px solid var(--brand-100);}
  .cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
  .cta-text h2{font-size:clamp(22px,2.6vw,30px);line-height:1.32;font-weight:700;color:var(--ink-900);letter-spacing:-.3px;}
  .cta-text p{margin-top:14px;font-size:15px;line-height:1.8;color:var(--ink-500);}
  .cta-points{display:flex;flex-direction:column;gap:12px;margin-top:24px;}
  .cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--ink-700);line-height:1.7;}
  .cta-points .dot-ico{margin-top:3px;}
  .form-card{background:#fff;border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-card);}
  .field{margin-bottom:16px;}
  .field label{display:block;font-size:13px;color:var(--ink-500);margin-bottom:6px;font-weight:500;}
  .field input,.field textarea{
    width:100%;padding:11px 14px;border-radius:var(--radius-btn);
    border:1px solid var(--line);background:#fff;color:var(--ink-900);font-size:14.5px;
    font-family:inherit;line-height:1.6;
    transition:border-color .18s ease,box-shadow .18s ease;
  }
  .field input::placeholder,.field textarea::placeholder{color:var(--ink-300);}
  .field input:focus,.field textarea:focus{
    outline:none;border-color:var(--brand-500);
    box-shadow:0 0 0 3px var(--brand-100);
  }
  .field textarea{resize:vertical;min-height:92px;}
  .form-note{font-size:12.5px;color:var(--ink-300);margin-top:12px;line-height:1.7;}
  @media (max-width:900px){
    .cta-grid{grid-template-columns:1fr;gap:28px;}
    .cta-wrap{padding:28px;}
    .form-card{padding:22px;}
  }

  /* ---------- 页脚 ---------- */
  .site-footer{background:#fff;border-top:1px solid var(--line);padding-top:60px;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.25fr;gap:40px;}
  .footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand .brand-mark{width:38px;height:38px;font-size:14px;border-radius:11px;}
  .footer-brand .brand-cn{font-size:15px;}
  .footer-brand .brand-sub{font-size:11px;}
  .footer-desc{font-size:14px;line-height:1.85;color:var(--ink-500);max-width:340px;}
  .footer-title{font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:14px;}
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-links a{font-size:14px;color:var(--ink-500);transition:color .18s ease;}
  .footer-links a:hover{color:var(--brand-600);}
  .footer-links a:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:5px;}
  .footer-contact{display:flex;flex-direction:column;gap:11px;font-size:13.5px;color:var(--ink-500);}
  .footer-contact span{display:flex;align-items:center;gap:8px;line-height:1.6;}
  .footer-contact svg{color:var(--brand-500);flex-shrink:0;}
  .footer-bottom{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
    margin-top:48px;padding:22px 0;border-top:1px solid var(--line);
    font-size:13px;color:var(--ink-300);
  }
  .footer-bottom a{color:var(--ink-500);transition:color .18s ease;}
  .footer-bottom a:hover{color:var(--brand-600);}
  @media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
  @media (max-width:560px){
    .site-footer{padding-top:44px;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;}
    html{scroll-behavior:auto;}
    .cap-item:hover,.btn-primary:hover{transform:none;}
  }

/* roulang page: category3 */
:root{
    --brand-700:#17439C; --brand-600:#1E56C8; --brand-500:#2F6BE0;
    --brand-100:#E3ECFB; --brand-50:#F2F6FE;
    --accent:#0E9384; --warm:#E8873A;
    --ink-900:#0E1B2E; --ink-700:#2A3B52; --ink-500:#5B6B80; --ink-300:#9AA7B8;
    --line:#E4EAF3; --soft:#F6F8FC; --white:#FFFFFF;
    --radius-card:16px; --radius-img:12px; --radius-btn:10px;
    --shadow-card:0 2px 4px rgba(16,39,80,.04), 0 12px 28px -12px rgba(16,39,80,.12);
    --shadow-hover:0 8px 18px -8px rgba(16,39,80,.18);
    --container:1200px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;background:var(--white);color:var(--ink-700);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%}
  button{font-family:inherit;border:0;background:none;cursor:pointer}
  input,textarea{font-family:inherit;font-size:15px;color:var(--ink-900)}
  .container{max-width:var(--container);margin:0 auto;padding:0 40px;width:100%}

  /* ---------- Header ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
  .header-inner{display:flex;align-items:center;gap:20px;height:68px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{
    display:inline-flex;align-items:center;justify-content:center;
    width:46px;height:34px;border-radius:10px;background:var(--brand-600);color:#fff;
    font-size:15px;font-weight:700;letter-spacing:.5px;font-family:Inter,system-ui,sans-serif;
    box-shadow:0 6px 14px -8px rgba(30,86,200,.7);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.2}
  .brand-cn{font-size:15px;font-weight:700;color:var(--ink-900);letter-spacing:.2px}
  .brand-sub{font-size:12px;color:var(--ink-500);margin-top:3px}
  .nav-tabs{display:flex;align-items:center;gap:6px;margin-left:8px}
  .nav-tab{
    padding:8px 14px;border-radius:999px;font-size:14px;font-weight:500;color:var(--ink-700);
    background:var(--brand-50);transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease;
    white-space:nowrap;
  }
  .nav-tab:hover{background:var(--brand-100);color:var(--brand-700)}
  .nav-tab:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
  .nav-tab.is-active{background:var(--brand-600);color:#fff;box-shadow:0 6px 14px -8px rgba(30,86,200,.75)}
  .header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;padding-left:18px;border-left:1px solid var(--line)}
  .nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:4px}
  .nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-700);transition:transform .2s ease,opacity .2s ease}
  .nav-toggle:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
  .mobile-menu{display:none}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--radius-btn);font-size:15px;font-weight:600;line-height:1;
    padding:13px 24px;transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease;
  }
  .btn-sm{padding:10px 18px;font-size:14px}
  .btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 8px 18px -12px rgba(30,86,200,.9)}
  .btn-primary:hover{background:var(--brand-700);box-shadow:0 12px 22px -12px rgba(23,67,156,.9);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-primary:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
  .btn-ghost{background:#fff;color:var(--brand-700);border:1px solid #D7E2F5}
  .btn-ghost:hover{background:var(--brand-50);border-color:#C3D6F2}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-ghost:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
  .text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600)}
  .text-link svg{transition:transform .2s ease}
  .text-link:hover{color:var(--brand-700)}
  .text-link:hover svg{transform:translateX(3px)}
  .text-link:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:6px}

  /* ---------- Chips / tags ---------- */
  .chip{
    display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;
    font-size:13px;font-weight:500;color:var(--ink-700);background:#fff;border:1px solid var(--line);
    transition:background .2s ease,color .2s ease,border-color .2s ease;
  }
  .chip:hover{background:var(--brand-50);border-color:#CFDDF4;color:var(--brand-700)}
  .chip.is-active{background:var(--brand-600);border-color:var(--brand-600);color:#fff}
  .q-tag{
    display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
    font-size:12px;font-weight:600;color:var(--brand-700);background:var(--brand-50);border:1px solid #DCE8FB;
  }
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-600);
    letter-spacing:.4px;margin-bottom:12px;
  }
  .eyebrow::before{content:"";display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-500)}

  /* ---------- Hero ---------- */
  .hero{background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 78%);border-bottom:1px solid var(--line);padding:36px 0 60px}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:26px}
  .breadcrumb a{color:var(--ink-500)}
  .breadcrumb a:hover{color:var(--brand-600)}
  .breadcrumb .sep{color:var(--ink-300)}
  .breadcrumb .current{color:var(--ink-900);font-weight:600}
  .hero-grid{display:grid;grid-template-columns:1.22fr .78fr;gap:52px;align-items:center}
  .hero-title{font-size:clamp(28px,4.2vw,44px);line-height:1.22;font-weight:700;letter-spacing:-.5px;color:var(--ink-900);margin:0 0 18px}
  .hero-sub{font-size:16px;line-height:1.8;color:var(--ink-700);max-width:36em;margin:0 0 26px}
  .search-box{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:6px 6px 6px 14px;box-shadow:var(--shadow-card);max-width:520px}
  .search-box svg{flex-shrink:0;color:var(--ink-300)}
  .search-box input{flex:1;border:0;outline:none;background:transparent;padding:9px 0;font-size:15px}
  .search-box input::placeholder{color:var(--ink-300)}
  .search-box .btn{padding:10px 18px;font-size:14px}
  .hero-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
  .hero-media{position:relative}
  .hero-media img{width:100%;height:330px;object-fit:cover;border-radius:20px;background:#E9EFF9;box-shadow:var(--shadow-card)}
  .hero-media::after{content:"";position:absolute;inset:0;border-radius:20px;background:rgba(255,255,255,.08);pointer-events:none}
  .hero-float{
    position:absolute;left:-22px;bottom:22px;background:#fff;border-radius:14px;padding:16px 18px;
    box-shadow:0 12px 30px -14px rgba(16,39,80,.3);border:1px solid var(--line);max-width:250px;z-index:2;
  }
  .float-label{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--accent);margin-bottom:8px}
  .float-label::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
  .hero-float li{font-size:13px;color:var(--ink-700);line-height:1.6;padding-left:14px;position:relative;margin-bottom:4px}
  .hero-float li::before{content:"";position:absolute;left:0;top:8px;width:5px;height:5px;border-radius:50%;background:var(--brand-500)}
  .hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px;padding-top:24px;border-top:1px solid var(--line)}
  .stat-num{font-size:24px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.3px}
  .stat-label{font-size:13px;color:var(--ink-500);margin-top:2px}

  /* ---------- Sections ---------- */
  .section{padding:88px 0}
  .section-soft{background:var(--soft)}
  .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:36px}
  .section-title{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;color:var(--ink-900);letter-spacing:-.3px}
  .section-desc{font-size:15px;line-height:1.75;color:var(--ink-500);margin-top:12px;max-width:40em}

  /* ---------- Q cards ---------- */
  .q-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
  .q-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;
    box-shadow:var(--shadow-card);display:flex;flex-direction:column;gap:12px;
    transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  }
  .q-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFE0F8}
  .q-title{font-size:18px;line-height:1.5;font-weight:600;color:var(--ink-900);letter-spacing:-.1px}
  .q-body{font-size:14.5px;line-height:1.75;color:var(--ink-700)}
  .q-card .text-link{margin-top:auto}

  /* ---------- Step bar ---------- */
  .step-panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:36px;box-shadow:var(--shadow-card)}
  .step-row{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;position:relative}
  .step-item{position:relative;padding-top:6px}
  .step-item:not(:last-child)::after{
    content:"";position:absolute;top:20px;right:-18px;width:20px;border-top:1px dashed #C9D8EF;
  }
  .step-badge{
    display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:999px;
    background:#E7F6F3;color:var(--accent);font-weight:700;font-size:14px;font-variant-numeric:tabular-nums;
    font-family:Inter,system-ui,sans-serif;margin-bottom:14px;
  }
  .step-title{font-size:17px;font-weight:600;color:var(--ink-900);margin-bottom:8px}
  .step-text{font-size:14px;line-height:1.75;color:var(--ink-500)}

  /* ---------- Dark band ---------- */
  .band-dark{
    background:#12325F;
    background-image:radial-gradient(rgba(255,255,255,.08) 1px, transparent 1px);
    background-size:22px 22px;
    color:#fff;padding:64px 0;
  }
  .band-grid{display:grid;grid-template-columns:1.1fr 1.9fr;gap:48px;align-items:center}
  .band-title{font-size:clamp(21px,2.3vw,28px);line-height:1.35;font-weight:700;color:#fff;margin-bottom:12px}
  .band-text{font-size:14.5px;line-height:1.8;color:#C7D6EE;max-width:26em}
  .band-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .metric{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:20px}
  .metric-num{font-size:22px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:-.2px}
  .metric-label{font-size:13px;color:#B7C8E4;margin-top:4px;line-height:1.6}
  .band-note{font-size:13px;color:#A9BCDB;margin-top:18px}

  /* ---------- Split ---------- */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
  .split img{width:100%;height:360px;object-fit:cover;border-radius:16px;background:#E9EFF9;box-shadow:var(--shadow-card)}
  .check-list{margin-top:22px;display:grid;gap:14px}
  .check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.7;color:var(--ink-700)}
  .check-ico{
    flex-shrink:0;width:22px;height:22px;border-radius:50%;background:#E7F6F3;color:var(--accent);
    display:inline-flex;align-items:center;justify-content:center;margin-top:3px;
  }
  .check-list strong{color:var(--ink-900);font-weight:600}

  /* ---------- CTA / form ---------- */
  .cta-panel{background:var(--brand-50);border-radius:24px;padding:44px;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
  .cta-list{margin-top:20px;display:grid;gap:12px}
  .cta-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-700);line-height:1.7}
  .cta-list svg{flex-shrink:0;color:var(--brand-500);margin-top:5px}
  .form-card{background:#fff;border-radius:16px;padding:28px;box-shadow:var(--shadow-card);border:1px solid #E7EEF9}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  .field{margin-bottom:14px}
  .field label{display:block;font-size:13px;color:var(--ink-500);margin-bottom:6px;font-weight:500}
  .field input,.field textarea{
    width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;
    transition:border-color .2s ease,box-shadow .2s ease;outline:none;
  }
  .field input:focus,.field textarea:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
  .field textarea{resize:vertical;min-height:88px}
  .field input::placeholder,.field textarea::placeholder{color:var(--ink-300)}
  .required{color:var(--warm);margin-left:2px}
  .form-hint{font-size:12.5px;color:var(--ink-500);margin-top:10px;line-height:1.7}
  .form-card .btn{width:100%;margin-top:6px}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--soft);border-top:1px solid var(--line);margin-top:0}
  .footer-top{padding:56px 0 40px}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
  .footer-desc{font-size:13.5px;line-height:1.8;color:var(--ink-500);max-width:30em}
  .footer-title{font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:14px}
  .footer-links{display:grid;gap:10px}
  .footer-links a{font-size:13.5px;color:var(--ink-500);transition:color .2s ease}
  .footer-links a:hover{color:var(--brand-600)}
  .footer-links a:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}
  .footer-contact{display:grid;gap:10px}
  .footer-contact span{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-500)}
  .footer-contact svg{flex-shrink:0;color:var(--brand-500)}
  .footer-bottom{
    display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
    padding:18px 0 26px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-500);
  }
  .footer-bottom a{color:var(--brand-600)}
  .footer-bottom a:hover{color:var(--brand-700)}

  /* ---------- Motion ---------- */
  @keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
  .fade-up{animation:fadeUp .5s ease both}
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
    .q-card:hover,.btn:hover{transform:none}
  }

  /* ---------- Responsive ---------- */
  @media (max-width:1100px){
    .nav-tab{padding:7px 11px;font-size:13px}
    .brand-sub{display:none}
  }
  @media (max-width:1023px){
    .container{padding:0 28px}
    .nav-tabs{display:none}
    .header-actions{border-left:0;padding-left:0}
    .nav-toggle{display:inline-flex}
    .mobile-menu{display:none;position:absolute;left:0;right:0;top:68px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 18px 30px -20px rgba(16,39,80,.35);padding:18px 28px 26px}
    .mobile-menu.is-open{display:block}
    .mobile-nav{display:grid;gap:6px;margin-bottom:16px}
    .mobile-link{display:block;padding:11px 14px;border-radius:10px;font-size:15px;color:var(--ink-700);background:var(--brand-50);font-weight:500}
    .mobile-link.is-active{background:var(--brand-600);color:#fff}
    .mobile-cta{width:100%}
    .hero{padding:26px 0 46px}
    .hero-grid{grid-template-columns:1fr;gap:34px}
    .hero-media img{height:280px}
    .hero-float{left:16px;bottom:16px}
    .section{padding:64px 0}
    .section-head{flex-direction:column;align-items:flex-start;gap:18px}
    .band-grid{grid-template-columns:1fr;gap:28px}
    .split{grid-template-columns:1fr;gap:32px}
    .split img{height:300px}
    .cta-panel{grid-template-columns:1fr;gap:30px;padding:32px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  }
  @media (max-width:767px){
    .q-grid{grid-template-columns:1fr}
    .step-row{grid-template-columns:1fr;gap:22px}
    .step-item:not(:last-child)::after{top:auto;bottom:-13px;left:19px;right:auto;width:1px;height:16px;border-top:0;border-left:1px dashed #C9D8EF}
    .hero-stats{grid-template-columns:1fr;gap:16px;padding-top:20px;margin-top:30px}
    .band-metrics{grid-template-columns:1fr;gap:14px}
    .form-row{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:28px}
  }
  @media (max-width:639px){
    .container{padding:0 20px}
    .hero-media img{height:220px}
    .hero-float{position:static;margin-top:14px;max-width:none}
    .section{padding:46px 0}
    .step-panel{padding:24px}
    .cta-panel{padding:24px;border-radius:18px}
    .form-card{padding:20px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }

/* roulang page: category4 */
:root{
  --brand-700:#17439C;
  --brand-600:#1E56C8;
  --brand-500:#2F6BE0;
  --brand-100:#E3ECFB;
  --brand-50:#F2F6FE;
  --accent:#0E9384;
  --warm:#E8873A;
  --ink-900:#0E1B2E;
  --ink-700:#2A3B52;
  --ink-500:#5B6B80;
  --ink-300:#9AA7B8;
  --line:#E4EAF3;
  --soft:#F6F8FC;
  --white:#FFFFFF;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 2px 4px rgba(16,39,80,.04), 0 12px 28px -12px rgba(16,39,80,.12);
  --shadow-hover:0 8px 18px -8px rgba(16,39,80,.18);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--white);
  color:var(--ink-700);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
a:hover{color:var(--brand-700)}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){.container{padding-left:28px;padding-right:28px}}
@media (min-width:1024px){.container{padding-left:40px;padding-right:40px}}

/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  min-height:68px;
  display:flex;
  align-items:center;
  gap:18px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink-900);
}
.brand:hover{color:var(--ink-900)}
.brand-mark{
  width:42px;
  height:42px;
  border-radius:11px;
  display:grid;
  place-items:center;
  background:linear-gradient(145deg,var(--brand-600),var(--brand-700));
  color:#fff;
  font-family:Inter,system-ui,sans-serif;
  font-weight:800;
  font-size:15px;
  letter-spacing:-.3px;
  box-shadow:0 6px 14px -8px rgba(30,86,200,.7);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-cn{font-size:15px;font-weight:700;letter-spacing:.1px;white-space:nowrap}
.brand-sub{font-size:11px;color:var(--ink-500);margin-top:4px;white-space:nowrap}
.nav-tabs{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1 1 auto;
  min-width:0;
  overflow-x:auto;
  scrollbar-width:none;
  padding:4px;
}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tab{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:34px;
  padding:0 13px;
  border-radius:999px;
  background:var(--brand-50);
  color:var(--ink-700);
  font-size:13px;
  font-weight:600;
  white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.nav-tab:hover{background:var(--brand-100);color:var(--brand-700)}
.nav-tab.is-active{
  background:var(--brand-600);
  color:#fff;
  box-shadow:0 4px 10px -5px rgba(30,86,200,.55);
}
.nav-tab:active{transform:translateY(1px)}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.nav-divider{width:1px;height:24px;background:var(--line);display:none}
.menu-toggle{
  display:none;
  width:40px;
  height:40px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:10px;
  align-items:center;
  justify-content:center;
  color:var(--ink-700);
}
.menu-toggle:hover{border-color:var(--brand-500);color:var(--brand-600)}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:14px 20px 20px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer .nav-tabs{flex-direction:column;align-items:stretch;overflow:visible;padding:0;gap:8px}
.mobile-drawer .nav-tab{justify-content:flex-start;height:42px;padding:0 16px;border-radius:10px}
.mobile-drawer .btn{width:100%;margin-top:12px}
@media (min-width:1024px){
  .nav-divider{display:block}
  .header-actions .btn{display:inline-flex}
}
@media (max-width:1023px){
  .nav-tabs{display:none}
  .menu-toggle{display:flex}
  .header-actions .btn{display:none}
  .header-inner{justify-content:space-between}
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 24px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  transition:background .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-primary{background:var(--brand-600);color:#fff;border-color:var(--brand-600)}
.btn-primary:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;box-shadow:0 10px 18px -12px rgba(30,86,200,.8)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;color:var(--brand-600);border-color:#D7E2F5}
.btn-outline:hover{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-700)}
.btn-sm{min-height:38px;padding:8px 18px;font-size:13px;border-radius:9px}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand-600);
  font-weight:700;
  font-size:14px;
}
.text-link svg{transition:transform .2s ease}
.text-link:hover{color:var(--brand-700)}
.text-link:hover svg{transform:translateX(2px)}

/* Hero */
.hero{
  background:linear-gradient(180deg,var(--soft) 0%,#FAFBFE 100%);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero-inner{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:44px;
  align-items:center;
  padding-top:72px;
  padding-bottom:56px;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 13px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--line);
  box-shadow:0 2px 4px rgba(16,39,80,.03);
  font-size:12px;
  font-weight:700;
  color:var(--brand-700);
  letter-spacing:.3px;
}
.hero-eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(14,147,132,.1)}
.hero h1{
  margin-top:20px;
  font-size:clamp(28px,4.2vw,46px);
  line-height:1.22;
  letter-spacing:-.5px;
  font-weight:800;
  color:var(--ink-900);
  max-width:760px;
}
.hero h1 .hl{color:var(--brand-600)}
.hero-sub{
  margin-top:18px;
  max-width:640px;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-500);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-note{display:flex;flex-wrap:wrap;gap:16px;margin-top:22px;font-size:13px;color:var(--ink-500)}
.hero-note span{display:inline-flex;align-items:center;gap:6px}
.hero-note svg{color:var(--accent);flex:0 0 auto}
.hero-media{position:relative}
.hero-figure{
  position:relative;
  min-height:380px;
  border-radius:20px;
  overflow:hidden;
  background:#E9EFF9;
  box-shadow:var(--shadow-card);
}
.hero-figure img{width:100%;height:100%;min-height:380px;object-fit:cover;position:absolute;inset:0}
.hero-figure::after{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(255,255,255,.08);
  pointer-events:none;
}
.hero-status{
  position:absolute;
  left:-18px;
  bottom:22px;
  width:min(290px,86%);
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:0 16px 30px -18px rgba(16,39,80,.35);
  padding:16px;
  z-index:2;
}
.hero-status-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
.hero-status-title{font-size:13px;font-weight:800;color:var(--ink-900)}
.status-badge{font-size:11px;font-weight:700;color:var(--accent);background:rgba(14,147,132,.1);padding:3px 8px;border-radius:999px}
.status-line{display:flex;align-items:center;gap:9px;font-size:12px;color:var(--ink-500);padding:5px 0}
.status-line .num{width:19px;height:19px;border-radius:50%;display:grid;place-items:center;background:rgba(14,147,132,.1);color:var(--accent);font-size:10px;font-weight:800;flex:0 0 auto}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  border-top:1px solid var(--line);
  padding-top:24px;
  padding-bottom:24px;
  gap:18px;
}
.stat-item{padding-right:16px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0;padding-right:0}
.stat-num{
  font-family:Inter,system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:clamp(22px,2.5vw,30px);
  line-height:1.15;
  font-weight:800;
  color:var(--accent);
  letter-spacing:-.4px;
}
.stat-label{margin-top:4px;font-size:13px;color:var(--ink-500);line-height:1.5}
.stat-label small{display:block;font-size:11px;color:var(--ink-300);margin-top:2px}

/* Sections */
.section{padding-top:88px;padding-bottom:88px}
.section-soft{background:var(--soft)}
.section-head{max-width:760px;margin-bottom:34px}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--brand-600);
  font-size:12px;
  font-weight:800;
  letter-spacing:1.5px;
  text-transform:uppercase;
}
.kicker::before{content:"";width:18px;height:2px;background:var(--brand-500);border-radius:2px}
.section-head h2{
  margin-top:12px;
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.3;
  color:var(--ink-900);
  font-weight:800;
  letter-spacing:-.2px;
}
.section-head p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink-500)}
h3{font-size:19px;line-height:1.5;font-weight:700;color:var(--ink-900)}

/* Zigzag */
.zigzag{display:flex;flex-direction:column;gap:38px}
.zigzag-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:36px;
  align-items:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:18px;
  box-shadow:var(--shadow-card);
  transition:box-shadow .25s ease,transform .25s ease;
}
.zigzag-row:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.zigzag-row.reverse .zigzag-media{order:2}
.zigzag-row.reverse .zigzag-copy{order:1}
.zigzag-media{
  border-radius:var(--radius-img);
  overflow:hidden;
  background:#E9EFF9;
  aspect-ratio:4/3;
}
.zigzag-media img{width:100%;height:100%;object-fit:cover}
.zigzag-copy{padding:14px 16px}
.zigzag-copy h3{font-size:22px;line-height:1.45;margin-top:12px}
.zigzag-copy p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--ink-500)}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 10px;
  border-radius:999px;
  background:var(--brand-50);
  border:1px solid var(--brand-100);
  color:var(--brand-700);
  font-size:12px;
  font-weight:700;
  white-space:nowrap;
}
.chip.accent{background:rgba(14,147,132,.08);border-color:rgba(14,147,132,.18);color:#08766A}
.micro-list{margin-top:14px;display:flex;flex-direction:column;gap:7px}
.micro-list li{position:relative;padding-left:18px;font-size:13.5px;color:var(--ink-700)}
.micro-list li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--brand-500)}
.zigzag-link{margin-top:16px}

/* Metric band */
.metric-band{background:linear-gradient(115deg,var(--brand-700),#102E69);color:#fff;border-radius:20px;padding:30px;position:relative;overflow:hidden}
.metric-band::after{content:"";position:absolute;right:-40px;top:-50px;width:220px;height:220px;border-radius:50%;border:42px solid rgba(255,255,255,.05)}
.metric-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.metric-cell{border-right:1px solid rgba(255,255,255,.18);padding-right:14px}
.metric-cell:last-child{border-right:0;padding-right:0}
.metric-num{font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;font-size:28px;font-weight:800;line-height:1.15;color:#8FE3D8}
.metric-label{margin-top:5px;font-size:13px;color:rgba(255,255,255,.78);line-height:1.55}
.metric-note{margin-top:16px;font-size:12px;color:rgba(255,255,255,.55);position:relative;z-index:1}

/* Two column lists */
.fit-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.fit-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-card)}
.fit-card h3{display:flex;align-items:center;gap:10px}
.fit-card h3 .icon{width:34px;height:34px;border-radius:10px;background:var(--brand-50);color:var(--brand-600);display:grid;place-items:center;flex:0 0 auto}
.fit-card.accent-card h3 .icon{background:rgba(14,147,132,.08);color:var(--accent)}
.check-list{margin-top:18px;display:grid;grid-template-columns:1fr;gap:10px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.7;color:var(--ink-700)}
.check-list svg{width:17px;height:17px;color:var(--accent);flex:0 0 auto;margin-top:4px}

/* Steps */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:0 2px 4px rgba(16,39,80,.03);position:relative}
.step-no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:34px;
  height:24px;
  padding:0 8px;
  border-radius:999px;
  background:rgba(14,147,132,.1);
  color:var(--accent);
  font-size:11px;
  font-weight:800;
  letter-spacing:.6px;
  font-family:Inter,system-ui,sans-serif;
}
.step h3{font-size:15px;margin-top:12px}
.step p{margin-top:6px;font-size:13px;line-height:1.7;color:var(--ink-500)}
.step-time{margin-top:10px;font-size:12px;font-weight:700;color:var(--brand-600)}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:40px;align-items:start}
.faq-aside{position:sticky;top:92px}
.faq-aside h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;color:var(--ink-900);font-weight:800;margin-top:12px}
.faq-aside p{margin-top:12px;font-size:14px;line-height:1.8;color:var(--ink-500)}
.contact-card{margin-top:22px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:var(--shadow-card)}
.contact-card .contact-title{font-size:14px;font-weight:800;color:var(--ink-900)}
.contact-card .contact-line{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-top:9px}
.contact-card svg{color:var(--brand-500);flex:0 0 auto}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item:hover{border-color:#CFDDF3;box-shadow:var(--shadow-card)}
.faq-q{display:flex;align-items:flex-start;gap:10px;font-size:15px;font-weight:800;color:var(--ink-900)}
.faq-q .q-mark{color:var(--brand-600);font-family:Inter,system-ui,sans-serif;font-size:12px;background:var(--brand-50);border-radius:6px;padding:2px 6px;flex:0 0 auto;margin-top:2px}
.faq-a{margin-top:8px;padding-left:30px;font-size:13.5px;line-height:1.8;color:var(--ink-500)}

/* CTA */
.cta-section{padding-top:0;padding-bottom:88px}
.cta-panel{
  background:linear-gradient(120deg,var(--brand-50) 0%,#EEF4FE 100%);
  border:1px solid var(--brand-100);
  border-radius:20px;
  padding:36px;
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:34px;
  align-items:start;
}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:800;color:var(--ink-900)}
.cta-panel .cta-desc{margin-top:12px;font-size:14px;line-height:1.8;color:var(--ink-500)}
.cta-points{margin-top:20px;display:flex;flex-direction:column;gap:9px}
.cta-points li{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:var(--ink-700)}
.cta-points svg{color:var(--accent);flex:0 0 auto;margin-top:4px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:0 14px 30px -20px rgba(16,39,80,.35)}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.form-field{display:flex;flex-direction:column;gap:6px}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:13px;font-weight:700;color:var(--ink-500)}
.form-field .req{color:var(--warm)}
.form-field input,.form-field textarea{
  width:100%;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--ink-900);
  padding:11px 12px;
  font-size:14px;
  line-height:1.5;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--ink-300)}
.form-field input:focus,.form-field textarea:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
.form-field textarea{min-height:86px;resize:vertical}
.form-tip{margin-top:10px;font-size:12px;line-height:1.7;color:var(--ink-500)}
.form-actions{display:flex;align-items:center;gap:12px;margin-top:16px}
.form-actions .btn{flex:1}
.form-actions .privacy{font-size:12px;color:var(--ink-300);white-space:nowrap}

/* Footer */
.site-footer{background:#0B1729;color:rgba(255,255,255,.72);border-top:1px solid rgba(255,255,255,.08)}
.footer-top{padding-top:56px;padding-bottom:36px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:34px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff}
.footer-brand:hover{color:#fff}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand .brand-text{display:flex;flex-direction:column;line-height:1.2}
.footer-brand .brand-cn{font-size:15px;font-weight:800;color:#fff}
.footer-brand .brand-sub{font-size:11px;color:rgba(255,255,255,.5);margin-top:4px}
.footer-desc{margin-top:16px;font-size:13px;line-height:1.8;color:rgba(255,255,255,.58);max-width:320px}
.footer-title{font-size:13px;font-weight:800;color:#fff;letter-spacing:.4px;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{font-size:13px;color:rgba(255,255,255,.62);transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:12.5px;color:rgba(255,255,255,.62)}
.footer-contact span{display:flex;align-items:flex-start;gap:8px;line-height:1.6}
.footer-contact svg{color:#8FB7FF;flex:0 0 auto;margin-top:2px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:18px;
  padding-bottom:22px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:14px;
  font-size:12px;
  color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:#fff}

/* Animation */
.fade-up{opacity:0;transform:translateY(12px);animation:fadeUp .5s ease forwards}
@keyframes fadeUp{to{opacity:1;transform:translateY(0)}}
.delay-1{animation-delay:.08s}
.delay-2{animation-delay:.16s}
.delay-3{animation-delay:.24s}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .fade-up{animation:none;opacity:1;transform:none}
  .zigzag-row,.nav-tab,.btn,.footer-links a{transition:none}
  .zigzag-row:hover{transform:none}
}

/* Responsive */
@media (max-width:1023px){
  .hero-inner{grid-template-columns:1fr;gap:28px;padding-top:48px;padding-bottom:36px}
  .hero-figure,.hero-figure img{min-height:300px}
  .hero-status{left:auto;right:16px;bottom:16px;width:min(300px,78%)}
  .section{padding-top:64px;padding-bottom:64px}
  .zigzag-row{grid-template-columns:1fr;gap:18px}
  .zigzag-row.reverse .zigzag-media,.zigzag-row.reverse .zigzag-copy{order:initial}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .metric-cell:nth-child(2){border-right:0;padding-right:0}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-wrap{grid-template-columns:1fr;gap:26px}
  .faq-aside{position:static}
  .cta-panel{grid-template-columns:1fr;padding:28px}
  .cta-section{padding-bottom:64px}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:28px}
  .footer-grid > div:last-child{grid-column:1/-1}
}
@media (max-width:639px){
  .container{padding-left:18px;padding-right:18px}
  .brand-sub{display:none}
  .brand-mark{width:38px;height:38px;font-size:14px}
  .hero h1{font-size:clamp(27px,8vw,36px)}
  .hero-sub{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-note{gap:10px;flex-direction:column}
  .hero-status{position:relative;left:auto;right:auto;bottom:auto;width:100%;margin-top:-36px;margin-left:14px;margin-right:14px;width:calc(100% - 28px)}
  .hero-stats{grid-template-columns:1fr;gap:14px}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);padding-bottom:14px;padding-right:0}
  .stat-item:last-child{border-bottom:0;padding-bottom:0}
  .metric-grid{grid-template-columns:1fr}
  .metric-cell{border-right:0;border-bottom:1px solid rgba(255,255,255,.18);padding-bottom:12px;padding-right:0}
  .metric-cell:last-child{border-bottom:0;padding-bottom:0}
  .fit-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .form-actions{flex-direction:column;align-items:stretch}
  .form-actions .privacy{text-align:center}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .zigzag-row{padding:12px}
  .zigzag-copy{padding:10px 8px 14px}
  .faq-a{padding-left:0}
  .faq-q{gap:8px}
  .cta-panel{padding:20px}
  .form-card{padding:20px}
}