/* roulang page: index */
:root{
  --brand-50:#EEF3FF;
  --brand-100:#DCE6FF;
  --brand-500:#3A6DF0;
  --brand-600:#1E52D6;
  --brand-700:#1740A8;
  --accent:#F26B3A;
  --accent-600:#DB5A2B;
  --support:#0E9F8A;
  --bg:#F6F8FC;
  --white:#FFFFFF;
  --ink:#0C1B33;
  --body:#445468;
  --muted:#7A8899;
  --line:#E6EBF3;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-sm:0 1px 3px rgba(12,27,51,.06);
  --shadow-md:0 6px 24px rgba(12,27,51,.07);
  --shadow-lg:0 16px 40px rgba(12,27,51,.10);
  --ease:220ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:Inter,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  background:var(--bg);
  color:var(--body);
  font-size:16px;
  line-height:1.75;
  padding-bottom:96px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container-x{padding:0 32px;}}
@media (min-width:1280px){.container-x{max-width:1280px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm);}
.header-inner{height:60px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
@media (min-width:1024px){.header-inner{height:68px;}}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--ink);letter-spacing:-.01em;}
@media (min-width:1024px){.logo{font-size:18px;}}
.logo-mark{
  width:32px;height:32px;border-radius:10px;flex:none;
  background:var(--brand-600);position:relative;box-shadow:var(--shadow-sm);
}
.logo-mark::after{
  content:"";position:absolute;right:-3px;bottom:-3px;width:11px;height:11px;border-radius:50%;
  background:var(--accent);border:2px solid #fff;
}
.nav-desktop{display:none;}
@media (min-width:1024px){
  .nav-desktop{display:flex;align-items:center;gap:32px;}
}
.nav-link{
  position:relative;font-size:15px;color:var(--body);padding:6px 0;
  transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-600);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:16px;}
.link-quiet{display:none;font-size:15px;color:var(--body);border-bottom:1px solid var(--line);padding-bottom:2px;transition:color var(--ease),border-color var(--ease);}
.link-quiet:hover{color:var(--accent);border-color:var(--accent);}
@media (min-width:1024px){.link-quiet{display:inline-block;}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:var(--radius-sm);font-size:15px;font-weight:600;padding:12px 24px;transition:all var(--ease);white-space:nowrap;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn-outline{background:transparent;color:var(--brand-600);border:1px solid var(--brand-600);}
.btn-outline:hover{background:var(--brand-50);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn-text{background:none;border:0;color:var(--brand-600);font-weight:600;font-size:15px;padding:6px 0;border-bottom:1px solid transparent;transition:color var(--ease),border-color var(--ease);}
.btn-text:hover{color:var(--accent);border-color:var(--accent);}
.btn-sm{padding:10px 18px;font-size:14px;}
.header-cta{display:none;}
@media (min-width:640px){.header-cta{display:inline-flex;}}

.burger{
  width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:var(--radius-sm);
  display:inline-flex;align-items:center;justify-content:center;
}
@media (min-width:1024px){.burger{display:none;}}
.burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}

.mobile-panel{
  display:none;position:fixed;inset:0;z-index:70;background:rgba(12,27,51,.35);
}
.mobile-panel.open{display:block;}
.mobile-sheet{
  position:absolute;top:0;right:0;bottom:0;width:min(88vw,340px);background:#fff;
  padding:24px 24px 32px;display:flex;flex-direction:column;gap:6px;box-shadow:var(--shadow-lg);
}
.mobile-sheet .sheet-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.mobile-sheet a.m-link{font-size:18px;color:var(--ink);padding:16px 0;border-bottom:1px solid var(--line);}
.mobile-sheet a.m-link.active{color:var(--brand-600);font-weight:600;}
.mobile-close{width:36px;height:36px;border-radius:var(--radius-sm);border:1px solid var(--line);background:#fff;font-size:18px;color:var(--muted);line-height:1;}
.sheet-cta{margin-top:20px;}

/* ---------- hero ---------- */
.hero{position:relative;background:#fff;overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-160px;right:-140px;width:520px;height:520px;border-radius:50%;
  background:var(--brand-50);
}
.hero::after{
  content:"";position:absolute;top:0;right:0;width:320px;height:320px;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:32px 32px;
  -webkit-mask-image:radial-gradient(circle at top right,#000 0%,transparent 70%);
  mask-image:radial-gradient(circle at top right,#000 0%,transparent 70%);
}
.hero-inner{position:relative;z-index:2;padding:56px 0 64px;}
@media (min-width:1024px){.hero-inner{padding:84px 0 96px;}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:44px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:58fr 42fr;gap:56px;}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--brand-50);color:var(--brand-700);font-size:13px;font-weight:600;letter-spacing:.02em;padding:6px 14px;border-radius:999px;}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--support);display:block;}
.hero h1{
  margin-top:20px;
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.18;letter-spacing:-.01em;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:var(--body);max-width:36em;}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-trust{margin-top:34px;display:flex;flex-wrap:wrap;gap:12px 26px;}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--body);}
.trust-item .dot{width:8px;height:8px;border-radius:50%;background:var(--brand-500);flex:none;}
.trust-item.s2 .dot{background:var(--support);}
.trust-item.s3 .dot{background:var(--accent);}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--shadow-md);
  border:1px solid var(--line);aspect-ratio:4/3;background:var(--brand-50);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.float-card{
  position:absolute;left:16px;bottom:-18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:16px 20px;min-width:172px;
}
@media (min-width:768px){.float-card{left:-24px;bottom:24px;}}
.float-num{font-size:30px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.1;}
.float-label{font-size:13px;color:var(--muted);margin-top:4px;}

/* ---------- section base ---------- */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:80px 0;}}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-white{background:#fff;}
.section-tint{background:var(--brand-50);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
.section-title{font-size:clamp(24px,2.6vw,34px);line-height:1.3;letter-spacing:-.01em;}
.section-desc{margin-top:12px;font-size:16px;color:var(--body);max-width:40em;}
.tag{display:inline-block;border-radius:999px;font-size:12px;letter-spacing:.02em;padding:4px 12px;background:var(--brand-50);color:var(--brand-700);}
.tag-support{background:rgba(14,159,138,.1);color:#0B7E6D;}
.tag-accent{background:rgba(242,107,58,.12);color:#C24A1E;}

/* ---------- strengths ---------- */
.strength-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:1024px){.strength-grid{grid-template-columns:7fr 5fr;gap:28px;}}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);padding:26px;transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:var(--brand-100);}
.strength-main{display:flex;flex-direction:column;gap:18px;padding:32px;}
@media (min-width:1024px){.strength-main{padding:40px;}}
.icon-box{
  width:48px;height:48px;border-radius:14px;background:var(--brand-50);color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;flex:none;
}
.icon-box svg{width:22px;height:22px;}
.strength-main h3{font-size:22px;line-height:1.4;}
.strength-main p{color:var(--body);}
.strength-list{margin-top:4px;border-top:1px solid var(--line);padding-top:18px;display:grid;gap:12px;}
.strength-list li{display:flex;gap:10px;font-size:15px;color:var(--body);}
.strength-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-500);margin-top:9px;flex:none;}
.strength-side{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:640px) and (max-width:1023px){.strength-side{grid-template-columns:1fr 1fr;}}
.strength-side h3{font-size:19px;margin:16px 0 10px;}
.strength-side p{font-size:15px;color:var(--body);}

/* ---------- scenario ---------- */
.scene{display:grid;grid-template-columns:1fr;gap:32px;align-items:center;}
@media (min-width:1024px){.scene{grid-template-columns:1fr 1fr;gap:56px;}}
.scene + .scene{margin-top:56px;}
@media (min-width:1024px){.scene + .scene{margin-top:88px;}}
.scene.rev .scene-media{order:2;}
@media (max-width:1023px){.scene.rev .scene-media{order:0;}}
.scene-media{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-md);aspect-ratio:16/11;background:var(--brand-50);}
.scene-media img{width:100%;height:100%;object-fit:cover;}
.scene h3{font-size:22px;line-height:1.4;margin-bottom:14px;}
.scene p{color:var(--body);}
.steps{margin-top:24px;display:grid;gap:16px;}
.step{display:flex;gap:14px;align-items:flex-start;}
.step-num{
  width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;font-size:14px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;flex:none;font-variant-numeric:tabular-nums;
}
.step-body strong{display:block;color:var(--ink);font-size:15px;font-weight:600;}
.step-body span{font-size:14px;color:var(--muted);}

/* ---------- cms list ---------- */
.post-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:640px){.post-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr);gap:28px;}}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-md);overflow:hidden;
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.post-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:var(--brand-100);}
.post-cover{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-50);}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease-out;}
.post-card:hover .post-cover img{transform:scale(1.04);}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-title{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card:hover .post-title{color:var(--brand-600);}
.post-excerpt{font-size:14px;color:var(--body);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-top:auto;padding-top:6px;}
.post-meta .sep{width:1px;height:12px;background:var(--line);display:inline-block;}
.more-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);transition:color var(--ease),gap var(--ease);}
.more-link:hover{color:var(--accent);gap:10px;}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius-lg);
  padding:56px 24px;text-align:center;color:var(--muted);
}
.empty-state .empty-icon{
  width:48px;height:48px;border-radius:14px;background:var(--brand-50);color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.empty-state p{font-size:15px;margin-bottom:18px;color:var(--body);}

/* ---------- stats & reviews ---------- */
.stat-bar{
  display:grid;grid-template-columns:repeat(2,1fr);background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);margin-bottom:44px;
}
@media (min-width:768px){.stat-bar{grid-template-columns:repeat(4,1fr);}}
.stat{padding:26px 18px;text-align:center;border-top:1px solid var(--line);border-left:1px solid var(--line);}
.stat:nth-child(odd){border-left:0;}
.stat:nth-child(-n+2){border-top:0;}
@media (min-width:768px){
  .stat{border-top:0;border-left:1px solid var(--line);}
  .stat:first-child{border-left:0;}
}
.stat-num{font-size:clamp(28px,3vw,38px);font-weight:700;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1.1;}
.stat-num.acc{color:var(--accent);}
.stat-label{margin-top:8px;font-size:13px;color:var(--muted);}
.review-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:768px){.review-grid{grid-template-columns:repeat(3,1fr);}}
.review-head{display:flex;align-items:center;gap:14px;margin-bottom:16px;}
.avatar-sq{
  width:44px;height:44px;border-radius:12px;background:var(--brand-50);color:var(--brand-700);
  font-weight:700;font-size:15px;display:inline-flex;align-items:center;justify-content:center;flex:none;
}
.review-name{font-size:15px;font-weight:600;color:var(--ink);}
.review-role{font-size:13px;color:var(--muted);}
.review-text{font-size:15px;color:var(--body);line-height:1.8;}

/* ---------- faq ---------- */
.faq-wrap{max-width:800px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:8px 24px;}
@media (min-width:768px){.faq-wrap{padding:8px 32px;}}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;padding:20px 34px 20px 18px;
  font-size:17px;font-weight:600;color:var(--ink);transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:24px;width:3px;height:16px;border-radius:2px;
  background:transparent;transition:background var(--ease);
}
.faq-item summary::after{
  content:"";position:absolute;right:8px;top:26px;width:8px;height:8px;
  border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);
  transform:rotate(45deg);transition:transform var(--ease),border-color var(--ease);
}
.faq-item[open] summary{color:var(--brand-600);}
.faq-item[open] summary::before{background:var(--brand-600);}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--brand-600);}
.faq-item summary:hover{color:var(--brand-600);}
.faq-answer{padding:0 34px 22px 18px;font-size:15px;color:var(--body);line-height:1.85;}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand-50);border-radius:20px;padding:40px 28px;display:grid;gap:26px;}
@media (min-width:768px){.cta-band{padding:52px 48px;grid-template-columns:1fr auto;align-items:center;gap:40px;}}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;}
.cta-band p{margin-top:12px;font-size:15px;color:var(--body);max-width:36em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 0;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}}
.footer-intro p{margin-top:16px;font-size:14px;color:var(--body);max-width:32em;}
.footer-contact{margin-top:20px;display:grid;gap:12px;}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--body);}
.footer-contact svg{width:16px;height:16px;color:var(--brand-600);flex:none;}
.footer-title{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:16px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:var(--body);transition:color var(--ease),transform var(--ease);display:inline-block;}
.footer-links a:hover{color:var(--brand-600);transform:translateX(2px);}
.footer-bottom{
  margin-top:44px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom a{color:var(--muted);transition:color var(--ease);}
.footer-bottom a:hover{color:var(--brand-600);}

/* ---------- sticky bar ---------- */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:80;background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 24px rgba(12,27,51,.07);
}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;height:62px;}
@media (min-width:768px){
  .sticky-bar{left:50%;right:auto;bottom:16px;transform:translateX(-50%);width:min(720px,calc(100% - 40px));border:1px solid var(--line);border-radius:999px;box-shadow:var(--shadow-lg);}
  .sticky-inner{height:66px;padding:0 22px;}
}
.sticky-text{font-size:14px;color:var(--body);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.sticky-text strong{color:var(--ink);font-weight:600;}
.sticky-actions{display:flex;align-items:center;gap:14px;flex:none;}
.sticky-actions .btn{border-radius:999px;padding:11px 22px;min-width:120px;}
.sticky-actions .btn-text{display:none;}
@media (min-width:768px){.sticky-actions .btn-text{display:inline-block;}}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
    --brand-50:#EEF3FF;
    --brand-100:#DCE6FF;
    --brand-500:#3A6DF0;
    --brand-600:#1E52D6;
    --brand-700:#1740A8;
    --accent:#F26B3A;
    --accent-dark:#DB5A2B;
    --support:#0E9F8A;
    --bg:#F6F8FC;
    --white:#FFFFFF;
    --txt:#0C1B33;
    --txt-body:#445468;
    --txt-muted:#7A8899;
    --line:#E6EBF3;
    --r-lg:16px;
    --r-md:12px;
    --r-sm:10px;
    --sh-sm:0 1px 3px rgba(12,27,51,.06);
    --sh-md:0 6px 24px rgba(12,27,51,.07);
    --sh-lg:0 16px 40px rgba(12,27,51,.10);
  }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--txt-body);
    background:var(--bg);
    padding-bottom:118px;
  }
  h1,h2,h3,h4{ margin:0; color:var(--txt); }
  p{ margin:0; }
  ul,ol{ margin:0; padding:0; }
  img{ display:block; max-width:100%; }
  a{ color:inherit; text-decoration:none; transition:color .2s ease, background-color .2s ease, border-color .2s ease, transform .22s ease-out, box-shadow .22s ease-out; }
  button{ font:inherit; }
  :focus-visible{ outline:2px solid var(--brand-600); outline-offset:2px; border-radius:6px; }

  .container-x{ width:100%; max-width:1200px; margin:0 auto; padding-left:20px; padding-right:20px; }
  @media (min-width:1024px){ .container-x{ max-width:1280px; padding-left:32px; padding-right:32px; } }

  /* ---------- header ---------- */
  .site-header{
    position:sticky; top:0; z-index:70;
    background:rgba(255,255,255,.96);
    border-bottom:1px solid var(--line);
    transition:box-shadow .24s ease;
  }
  .site-header.is-scrolled{ box-shadow:var(--sh-sm); }
  .header-inner{
    height:60px; display:flex; align-items:center; justify-content:space-between; gap:20px;
  }
  @media (min-width:1024px){ .header-inner{ height:68px; } }

  .logo{
    display:inline-flex; align-items:center; gap:10px;
    font-size:17px; font-weight:700; color:var(--txt); letter-spacing:-.01em; white-space:nowrap;
  }
  .logo-mark{
    width:22px; height:22px; border-radius:7px; flex:none;
    background:var(--brand-600);
    box-shadow:inset 0 0 0 4px var(--brand-50);
    position:relative;
  }
  .logo-mark::after{
    content:""; position:absolute; inset:6px; border-radius:3px; background:var(--accent);
  }

  .nav-desktop{ display:none; align-items:center; gap:6px; }
  @media (min-width:1024px){ .nav-desktop{ display:flex; } }
  .nav-link{
    position:relative; font-size:15px; color:var(--txt-body);
    padding:6px 12px; border-radius:8px;
  }
  .nav-link:hover{ color:var(--brand-600); }
  .nav-link.active{ color:var(--brand-600); font-weight:600; }
  .nav-link.active::after{
    content:""; position:absolute; left:12px; right:12px; bottom:-6px; height:2px;
    border-radius:2px; background:var(--brand-600);
  }

  .header-actions{ display:flex; align-items:center; gap:14px; }
  .link-quiet{ font-size:14px; color:var(--txt-muted); display:none; }
  .link-quiet:hover{ color:var(--brand-600); }
  @media (min-width:1024px){ .link-quiet{ display:inline-block; } }
  .header-cta{ display:none; }
  @media (min-width:768px){ .header-cta{ display:inline-flex; } }

  .burger{
    width:40px; height:40px; display:inline-flex; align-items:center; justify-content:center;
    background:#fff; border:1px solid var(--line); border-radius:10px; cursor:pointer;
  }
  .burger span{ display:block; width:18px; height:1.5px; background:var(--txt); position:relative; }
  .burger span::before,.burger span::after{
    content:""; position:absolute; left:0; width:18px; height:1.5px; background:var(--txt);
  }
  .burger span::before{ top:-6px; }
  .burger span::after{ top:6px; }
  @media (min-width:1024px){ .burger{ display:none; } }

  .nav-mask{
    position:fixed; inset:0; background:rgba(12,27,51,.35); opacity:0; visibility:hidden;
    transition:opacity .26s ease, visibility .26s ease; z-index:80;
  }
  .nav-mask.open{ opacity:1; visibility:visible; }
  .mobile-panel{
    position:fixed; top:0; right:0; height:100%; width:min(84vw,340px); background:#fff;
    transform:translateX(100%); transition:transform .28s ease-out; z-index:90;
    padding:26px 24px; display:flex; flex-direction:column; gap:4px; box-shadow:var(--sh-lg);
  }
  .mobile-panel.open{ transform:translateX(0); }
  .mobile-panel .m-title{ font-size:13px; color:var(--txt-muted); letter-spacing:.06em; margin-bottom:10px; }
  .m-link{
    display:block; font-size:19px; color:var(--txt); padding:14px 0; border-bottom:1px solid var(--line);
  }
  .m-link:hover{ color:var(--brand-600); }
  .m-link.active{ color:var(--brand-600); font-weight:600; }
  .mobile-panel .m-cta{ margin-top:22px; width:100%; }
  @media (min-width:1024px){ .mobile-panel,.nav-mask{ display:none; } }

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    padding:12px 24px; border-radius:var(--r-sm); border:1px solid transparent;
    font-size:15px; font-weight:600; cursor:pointer; white-space:nowrap;
    transition:background-color .22s ease-out, color .22s ease-out, border-color .22s ease-out, transform .22s ease-out, box-shadow .22s ease-out;
  }
  .btn-primary{ background:var(--accent); color:#fff; box-shadow:var(--sh-sm); }
  .btn-primary:hover{ background:var(--accent-dark); transform:translateY(-1px); box-shadow:var(--sh-md); }
  .btn-primary:active{ transform:none; box-shadow:var(--sh-sm); }
  .btn-outline{ background:#fff; border-color:var(--brand-600); color:var(--brand-600); }
  .btn-outline:hover{ background:var(--brand-50); }
  .btn-sm{ padding:9px 16px; font-size:14px; }
  .btn-link{ color:var(--brand-600); font-weight:600; font-size:15px; border-bottom:1px solid rgba(30,82,214,.35); padding-bottom:2px; }
  .btn-link:hover{ color:var(--accent); border-color:rgba(242,107,58,.5); }

  /* ---------- hero ---------- */
  .page-hero{
    position:relative; overflow:hidden;
    background:#fff; border-bottom:1px solid var(--line);
    padding:28px 0 44px;
  }
  .page-hero::before{
    content:""; position:absolute; top:-140px; right:-120px; width:460px; height:460px;
    background:var(--brand-50); border-radius:50%; opacity:.9; pointer-events:none;
  }
  .page-hero::after{
    content:""; position:absolute; left:0; right:0; bottom:0; height:1px; background:var(--line);
  }
  .crumb{ position:relative; z-index:1; }
  .crumb ol{ display:flex; flex-wrap:wrap; align-items:center; gap:0; list-style:none; font-size:13px; color:var(--txt-muted); }
  .crumb li{ display:flex; align-items:center; }
  .crumb li + li::before{ content:"/"; margin:0 8px; color:#C7D0DE; }
  .crumb a:hover{ color:var(--brand-600); }
  .crumb [aria-current="page"]{ color:var(--txt-body); }

  .hero-grid{
    position:relative; z-index:1; margin-top:24px;
    display:grid; grid-template-columns:1fr; gap:28px; align-items:center;
  }
  @media (min-width:1024px){ .hero-grid{ grid-template-columns:58% 42%; gap:44px; margin-top:30px; } }

  .pill{
    display:inline-flex; align-items:center; gap:6px;
    padding:6px 14px; border-radius:999px; font-size:12px; letter-spacing:.02em;
    background:rgba(14,159,138,.12); color:#0B7A6A; font-weight:600;
  }
  .page-hero h1{
    margin-top:16px; font-size:clamp(30px,4.4vw,50px); font-weight:700; line-height:1.18; letter-spacing:-.01em;
  }
  .hero-lead{ margin-top:16px; font-size:16px; color:var(--txt-body); max-width:38em; }
  .hero-actions{ margin-top:26px; display:flex; flex-wrap:wrap; gap:12px; align-items:center; }
  .hero-media{ position:relative; }
  .hero-media img{
    width:100%; aspect-ratio:4/3; object-fit:cover; border-radius:var(--r-lg); box-shadow:var(--sh-md);
  }
  .hero-badge{
    position:absolute; left:16px; bottom:16px;
    background:#fff; border:1px solid var(--line); border-radius:var(--r-md);
    padding:12px 18px; box-shadow:var(--sh-md);
  }
  .hero-badge strong{ display:block; font-size:26px; font-weight:700; color:var(--accent); font-variant-numeric:tabular-nums; line-height:1.1; }
  .hero-badge span{ font-size:13px; color:var(--txt-muted); }

  .anchor-bar{
    position:relative; z-index:1;
    margin-top:32px; padding-top:24px; border-top:1px solid var(--line);
    display:flex; flex-wrap:wrap; gap:10px;
  }
  .anchor-chip{
    display:inline-flex; align-items:center; gap:6px;
    padding:8px 16px; border-radius:999px; font-size:13px;
    background:#fff; border:1px solid var(--line); color:var(--txt-body);
  }
  .anchor-chip:hover{ background:var(--brand-50); border-color:var(--brand-100); color:var(--brand-600); }

  /* ---------- main layout ---------- */
  .main-wrap{ padding:48px 0 8px; }
  @media (min-width:1024px){ .main-wrap{ padding:64px 0 8px; } }
  .content-grid{ display:grid; grid-template-columns:1fr; gap:40px; }
  @media (min-width:1024px){ .content-grid{ grid-template-columns:minmax(0,8fr) minmax(0,4fr); gap:44px; align-items:start; } }

  .list-head{ margin-bottom:8px; }
  .list-head h2{ font-size:clamp(24px,2.6vw,32px); font-weight:700; letter-spacing:-.01em; }
  .list-head p{ margin-top:12px; color:var(--txt-body); max-width:40em; }

  .entry{
    padding:32px 0;
    border-bottom:1px solid var(--line);
    display:grid; grid-template-columns:1fr; gap:22px;
  }
  @media (min-width:768px){
    .entry{ grid-template-columns:minmax(0,1fr) 300px; gap:32px; align-items:center; }
  }
  .entry:first-of-type{ border-top:1px solid var(--line); }
  .entry-num{
    display:inline-flex; align-items:center; justify-content:center;
    min-width:34px; height:24px; padding:0 8px; border-radius:999px;
    background:rgba(242,107,58,.12); color:var(--accent-dark);
    font-size:12px; font-weight:700; letter-spacing:.08em; font-variant-numeric:tabular-nums;
  }
  .entry h3{ margin-top:12px; font-size:21px; font-weight:600; letter-spacing:-.01em; }
  .entry p.desc{ margin-top:12px; color:var(--txt-body); font-size:15.5px; }
  .entry-points{ margin-top:16px; list-style:none; display:grid; gap:8px; }
  .entry-points li{ position:relative; padding-left:18px; font-size:15px; color:var(--txt-body); line-height:1.7; }
  .entry-points li::before{
    content:""; position:absolute; left:0; top:11px; width:6px; height:6px; border-radius:50%; background:var(--brand-600);
  }
  .entry-media img{
    width:100%; aspect-ratio:4/3; object-fit:cover; border-radius:var(--r-lg);
    border:1px solid var(--line); box-shadow:var(--sh-sm);
  }

  /* ---------- sidebar ---------- */
  .side-stack{ display:grid; gap:20px; }
  @media (min-width:1024px){ .side-stack{ position:sticky; top:96px; } }
  .side-card{
    background:#fff; border:1px solid var(--line); border-radius:var(--r-lg);
    padding:22px 22px 24px; box-shadow:var(--sh-md);
  }
  .side-card h4{ font-size:15px; font-weight:700; letter-spacing:.02em; }
  .side-toc{ margin-top:14px; display:grid; gap:2px; }
  .side-toc a{
    display:flex; align-items:center; gap:10px;
    padding:9px 0; font-size:14.5px; color:var(--txt-body); border-bottom:1px dashed var(--line);
  }
  .side-toc a:last-child{ border-bottom:0; }
  .side-toc a:hover{ color:var(--brand-600); padding-left:4px; }
  .side-toc .dot{ width:6px; height:6px; border-radius:50%; background:var(--brand-100); flex:none; }
  .side-toc a:hover .dot{ background:var(--brand-600); }

  .side-cta{
    background:var(--brand-50); border:1px solid var(--brand-100);
    border-radius:var(--r-lg); padding:24px 22px; box-shadow:none;
  }
  .side-cta h4{ font-size:17px; font-weight:700; }
  .side-cta p{ margin-top:10px; font-size:14px; color:var(--txt-body); }
  .side-cta .btn{ width:100%; margin-top:18px; }

  .note-card{
    background:#fff; border:1px solid var(--line); border-radius:var(--r-lg);
    padding:20px 22px; box-shadow:var(--sh-sm);
  }
  .note-card .nc-title{ font-size:13px; font-weight:700; color:var(--support); letter-spacing:.04em; }
  .note-card p{ margin-top:8px; font-size:14px; color:var(--txt-body); }

  /* ---------- FAQ ---------- */
  .faq-section{ padding:64px 0 56px; }
  .faq-inner{ max-width:820px; margin:0 auto; }
  .faq-inner > h2{ font-size:clamp(24px,2.6vw,32px); font-weight:700; }
  .faq-inner > p{ margin-top:12px; color:var(--txt-body); }
  .faq-list{ margin-top:28px; border-top:1px solid var(--line); }
  .faq-item{ border-bottom:1px solid var(--line); }
  .faq-item summary{
    list-style:none; cursor:pointer;
    display:flex; align-items:center; justify-content:space-between; gap:16px;
    padding:20px 0; font-size:17px; font-weight:600; color:var(--txt);
    transition:padding-left .22s ease, color .2s ease, border-color .2s ease;
    border-left:3px solid transparent;
  }
  .faq-item summary::-webkit-details-marker{ display:none; }
  .faq-item summary:hover{ color:var(--brand-600); }
  .faq-item[open] summary{
    color:var(--brand-600); border-left-color:var(--brand-600); padding-left:14px;
  }
  .faq-item summary .arrow{ flex:none; color:var(--txt-muted); transition:transform .24s ease-out; }
  .faq-item[open] summary .arrow{ transform:rotate(180deg); color:var(--brand-600); }
  .faq-body{ padding:0 0 22px 14px; font-size:15.5px; color:var(--txt-body); }

  /* ---------- bottom CTA ---------- */
  .cta-band{
    background:var(--brand-50); border-top:1px solid var(--brand-100);
    padding:56px 0;
  }
  .cta-box{
    display:grid; grid-template-columns:1fr; gap:26px; align-items:center;
  }
  @media (min-width:1024px){ .cta-box{ grid-template-columns:minmax(0,1fr) auto; gap:48px; } }
  .cta-box h2{ font-size:clamp(24px,2.6vw,32px); font-weight:700; letter-spacing:-.01em; }
  .cta-box p{ margin-top:12px; color:var(--txt-body); max-width:38em; }
  .cta-actions{ display:flex; flex-wrap:wrap; gap:14px; align-items:center; }

  /* ---------- footer ---------- */
  .site-footer{ background:#fff; border-top:1px solid var(--line); padding:56px 0 0; }
  .footer-grid{ display:grid; grid-template-columns:1fr; gap:32px; }
  @media (min-width:768px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
  @media (min-width:1024px){ .footer-grid{ grid-template-columns:1.5fr 1fr 1fr 1fr; gap:40px; } }
  .footer-intro .logo{ margin-bottom:14px; }
  .footer-intro p{ font-size:14px; color:var(--txt-body); max-width:34em; }
  .footer-contact{ list-style:none; margin-top:18px; display:grid; gap:10px; }
  .footer-contact li{ display:flex; align-items:center; gap:10px; font-size:14px; color:var(--txt-muted); }
  .footer-contact svg{ width:17px; height:17px; flex:none; color:var(--brand-600); }
  .footer-title{ font-size:14px; font-weight:700; color:var(--txt); letter-spacing:.02em; }
  .footer-links{ margin-top:14px; display:grid; gap:10px; }
  .footer-links a{ font-size:14px; color:var(--txt-body); }
  .footer-links a:hover{ color:var(--brand-600); transform:translateX(2px); }
  .footer-bottom{
    margin-top:44px; padding:22px 0;
    border-top:1px solid var(--line);
    display:flex; flex-wrap:wrap; gap:12px; justify-content:space-between;
    font-size:13px; color:var(--txt-muted);
  }
  .fb-links{ display:flex; flex-wrap:wrap; gap:16px; }
  .fb-links a:hover{ color:var(--brand-600); }

  /* ---------- sticky conversion bar ---------- */
  .sticky-cta{
    position:fixed; left:0; right:0; bottom:0; z-index:95;
    background:#fff; border-top:1px solid var(--line);
    box-shadow:0 -6px 24px rgba(12,27,51,.08);
    padding:10px 16px;
  }
  .sticky-inner{ display:flex; align-items:center; justify-content:space-between; gap:12px; }
  .sticky-text{ font-size:13.5px; color:var(--txt-body); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
  .sticky-actions{ display:flex; align-items:center; gap:14px; flex:none; }
  .sticky-actions .btn{ min-width:120px; padding:10px 20px; font-size:15px; }
  .sticky-actions .btn-link{ font-size:14px; display:none; }
  @media (min-width:768px){
    body{ padding-bottom:104px; }
    .sticky-cta{
      left:50%; right:auto; transform:translateX(-50%);
      bottom:16px; width:calc(100% - 40px); max-width:720px;
      border:1px solid var(--line); border-radius:999px;
      box-shadow:var(--sh-lg); padding:10px 12px 10px 24px;
    }
    .sticky-actions .btn{ border-radius:999px; }
    .sticky-actions .btn-link{ display:inline-block; }
  }

/* roulang page: article */
:root{
  --brand-50:#EEF3FF;
  --brand-100:#DCE6FF;
  --brand-500:#3A6DF0;
  --brand-600:#1E52D6;
  --brand-700:#1740A8;
  --accent:#F26B3A;
  --accent-600:#DB5A2B;
  --support:#0E9F8A;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E6EBF3;
  --ink:#0C1B33;
  --ink-2:#445468;
  --ink-3:#7A8899;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-sm:0 1px 3px rgba(12,27,51,.06);
  --shadow-md:0 6px 24px rgba(12,27,51,.07);
  --shadow-lg:0 16px 40px rgba(12,27,51,.10);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  padding-bottom:104px;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3;}
p{margin:0;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;
}
.container-x{max-width:var(--container);margin:0 auto;padding:0 20px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.scrolled{box-shadow:var(--shadow-sm);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.logo-mark{width:22px;height:22px;border-radius:7px;background:var(--brand-600);position:relative;flex:none;}
.logo-mark::after{content:"";position:absolute;left:6px;right:6px;top:7px;height:2.5px;border-radius:2px;background:#fff;box-shadow:0 5px 0 rgba(255,255,255,.65);}
.nav-desktop{display:flex;align-items:center;gap:28px;}
.nav-link{position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;transition:color .2s ease;white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--brand-600);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--ink);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:16px;}
.link-quiet{font-size:14px;font-weight:500;color:var(--brand-600);border-bottom:1px solid rgba(30,82,214,.32);padding-bottom:1px;transition:color .2s ease,border-color .2s ease;}
.link-quiet:hover{color:var(--accent);border-color:rgba(242,107,58,.45);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-sm);font-size:15px;font-weight:600;
  padding:12px 24px;border:1px solid transparent;cursor:pointer;
  transition:background-color .22s ease,color .22s ease,box-shadow .22s ease,transform .22s ease,border-color .22s ease;
  line-height:1.2;white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:none;}
.btn-outline{border-color:var(--brand-600);color:var(--brand-600);background:#fff;}
.btn-outline:hover{background:var(--brand-50);}
.btn-ghost{color:var(--brand-600);background:transparent;padding-left:6px;padding-right:6px;}
.btn-ghost:hover{color:var(--accent);}
.burger{display:none;width:40px;height:40px;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line);}
.burger span{display:block;width:16px;height:1.5px;background:var(--ink);position:relative;transition:background .2s ease;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--ink);transition:transform .22s ease,top .22s ease;}
.burger span::before{top:-5px;}
.burger span::after{top:5px;}
.burger[aria-expanded="true"] span{background:transparent;}
.burger[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.burger[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}

/* ---------- mobile nav ---------- */
.mobile-panel{
  position:fixed;inset:60px 0 0 0;z-index:49;background:rgba(12,27,51,.28);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;
}
.mobile-panel.open{opacity:1;visibility:visible;}
.mobile-panel-inner{
  background:#fff;border-bottom:1px solid var(--line);
  padding:12px 20px 24px;display:grid;gap:4px;
  transform:translateY(-8px);transition:transform .24s ease;
  box-shadow:var(--shadow-md);
}
.mobile-panel.open .mobile-panel-inner{transform:translateY(0);}
.mobile-panel-inner a{font-size:18px;color:var(--ink);padding:14px 0;border-bottom:1px solid var(--line);}
.mobile-panel-inner a.is-active{color:var(--brand-600);font-weight:600;}
.mobile-panel-inner .btn{margin-top:16px;font-size:16px;padding:13px 24px;}

/* ---------- article head ---------- */
.breadcrumb{padding:20px 0 0;font-size:13px;color:var(--ink-3);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"›";color:#B9C3D1;}
.breadcrumb a{color:var(--ink-3);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb [aria-current="page"]{color:var(--ink-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom;}
.article-head{background:var(--surface);border-bottom:1px solid var(--line);padding-bottom:34px;}
.article-title{
  font-size:clamp(27px,4vw,42px);font-weight:700;line-height:1.24;letter-spacing:-.01em;
  margin:26px 0 0;max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;font-size:13.5px;color:var(--ink-3);list-style:none;}
.article-meta li{display:flex;align-items:center;gap:6px;}
.article-meta li+li::before{content:"";width:1px;height:12px;background:var(--line);margin-right:4px;}
.article-meta svg{width:15px;height:15px;color:var(--ink-3);}
.tag{
  display:inline-flex;align-items:center;border-radius:999px;
  padding:3px 12px;font-size:12px;letter-spacing:.02em;
  background:var(--brand-50);color:var(--brand-700);
}
.tag-support{background:rgba(14,159,138,.10);color:#0B7F6E;}

/* ---------- article body ---------- */
.article-main{padding:56px 0 8px;}
.article-wrap{max-width:780px;margin:0 auto;}
.article-body{font-size:16px;line-height:1.9;color:var(--ink-2);}
.article-body p{margin:0 0 1.15em;}
.article-body h1,.article-body h2{
  position:relative;padding-left:16px;margin:1.9em 0 .8em;
  font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--ink);
}
.article-body h1::before,.article-body h2::before{
  content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:4px;border-radius:4px;background:var(--brand-600);
}
.article-body h3{margin:1.6em 0 .6em;font-size:19px;font-weight:600;color:var(--ink);}
.article-body h4{margin:1.4em 0 .5em;font-size:17px;font-weight:600;color:var(--ink);}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:1.3em;}
.article-body ul li{list-style:none;position:relative;margin-bottom:.5em;}
.article-body ul li::before{content:"";position:absolute;left:-1.05em;top:.75em;width:6px;height:6px;border-radius:50%;background:var(--brand-500);}
.article-body ol li{list-style:decimal;margin-bottom:.5em;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;background:var(--brand-50);
  border-left:3px solid var(--brand-600);border-radius:0 var(--radius-md) var(--radius-md) 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius-md);margin:1.8em auto;}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;transition:color .2s ease;}
.article-body a:hover{color:var(--accent);}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--brand-50);color:var(--ink);font-weight:600;}
.article-body code{background:#EFF3FA;color:var(--brand-700);padding:2px 6px;border-radius:6px;font-size:.92em;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.empty-state{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);padding:56px 28px;text-align:center;
}
.empty-state .empty-icon{
  width:52px;height:52px;margin:0 auto 18px;border-radius:16px;background:var(--brand-50);
  display:flex;align-items:center;justify-content:center;color:var(--brand-600);
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--ink-3);font-size:15px;margin-bottom:22px;}

/* ---------- article tail ---------- */
.article-tail{margin-top:44px;padding-top:28px;border-top:1px solid var(--line);}
.tail-block+.tail-block{margin-top:32px;}
.tail-label{font-size:13px;color:var(--ink-3);margin-bottom:12px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.source-card{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:20px 22px;box-shadow:var(--shadow-sm);
}
.source-avatar{
  width:44px;height:44px;border-radius:12px;flex:none;background:var(--brand-50);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
}
.source-card h3{font-size:16px;margin-bottom:6px;}
.source-card p{font-size:14px;color:var(--ink-3);line-height:1.8;}
.tail-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:30px;}

/* ---------- related ---------- */
.related{padding:72px 0 8px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;}
.section-head p{font-size:14px;color:var(--ink-3);margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-100);}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-50);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-title{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-title a{transition:color .2s ease;}
.news-title a:hover{color:var(--brand-600);}
.news-desc{font-size:14px;color:var(--ink-3);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);}
.news-meta svg{width:15px;height:15px;}

/* ---------- faq ---------- */
.faq{padding:72px 0 8px;}
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);transition:border-color .2s ease,padding .2s ease;}
.faq-item:first-of-type{border-top:1px solid var(--line);}
.faq-item[open]{border-left:3px solid var(--brand-600);padding-left:16px;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";width:9px;height:9px;flex:none;margin-right:4px;
  border-right:1.5px solid var(--ink-3);border-bottom:1.5px solid var(--ink-3);
  transform:rotate(45deg);transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg);}
.faq-answer{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ---------- cta band ---------- */
.cta-band{padding:72px 0 0;}
.cta-box{
  background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--radius-lg);
  padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-box h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;}
.cta-box p{font-size:15px;color:var(--ink-2);margin-top:10px;max-width:44ch;}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:80px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding:56px 0 40px;}
.footer-intro .logo{font-size:16px;}
.footer-intro p{font-size:14px;line-height:1.8;color:var(--ink-3);margin:14px 0 18px;max-width:36em;}
.footer-contact{list-style:none;display:grid;gap:10px;font-size:13.5px;color:var(--ink-2);}
.footer-contact li{display:flex;align-items:center;gap:8px;}
.footer-contact svg{width:16px;height:16px;color:var(--brand-600);flex:none;}
.footer-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:var(--ink-3);display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-links a:hover{color:var(--brand-600);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;
  justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--ink-3);
}
.fb-links{display:flex;gap:18px;flex-wrap:wrap;}
.fb-links a{transition:color .2s ease;}
.fb-links a:hover{color:var(--brand-600);}

/* ---------- sticky cta ---------- */
.sticky-cta{position:fixed;left:0;right:0;bottom:16px;z-index:60;display:flex;justify-content:center;padding:0 20px;pointer-events:none;}
.sticky-cta-inner{
  pointer-events:auto;display:flex;align-items:center;gap:18px;width:100%;max-width:720px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  box-shadow:var(--shadow-lg);padding:10px 12px 10px 24px;
}
.sticky-tip{flex:1;min-width:0;font-size:14px;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-desktop{display:none;}
  .burger{display:inline-flex;}
  .header-actions .link-quiet{display:none;}
  .header-inner{height:60px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 32px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
  .article-main{padding:40px 0 8px;}
  .related,.faq,.cta-band{padding-top:56px;}
  .cta-box{padding:34px 28px;}
}
@media (max-width:639px){
  body{padding-bottom:88px;font-size:15.5px;}
  .container-x{padding:0 20px;}
  .header-cta{display:none;}
  .article-title{margin-top:20px;}
  .breadcrumb [aria-current="page"]{max-width:26ch;}
  .article-meta{gap:8px;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:38px 0 26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-box{padding:28px 22px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .sticky-cta{bottom:0;padding:0;}
  .sticky-cta-inner{
    border-radius:0;border-left:0;border-right:0;border-bottom:0;
    padding:9px 14px;gap:12px;box-shadow:0 -6px 24px rgba(12,27,51,.10);
  }
  .sticky-cta .link-quiet{display:none;}
  .sticky-cta .btn{min-width:120px;}
  .article-wrap{max-width:100%;}
}

/* roulang page: category2 */
/* ===================== 设计变量 ===================== */
:root{
  --brand-50:#EEF3FF;
  --brand-100:#DCE6FF;
  --brand-500:#3A6DF0;
  --brand-600:#1E52D6;
  --brand-700:#1740A8;
  --accent:#F26B3A;
  --accent-600:#DB5A2B;
  --support:#0E9F8A;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E6EBF3;
  --ink:#0C1B33;
  --text:#445468;
  --muted:#7A8899;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh-sm:0 1px 3px rgba(12,27,51,.06);
  --sh-md:0 6px 24px rgba(12,27,51,.07);
  --sh-lg:0 16px 40px rgba(12,27,51,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-bottom:96px;
  font-family:"Inter","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.18}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3}
h3{font-size:20px;line-height:1.45;font-weight:600}
p{margin:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
svg{display:block}
[hidden]{display:none !important}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:3px;border-radius:6px}
::selection{background:var(--brand-100);color:var(--ink)}

.skip-link{
  position:absolute;left:16px;top:-60px;z-index:200;
  background:var(--brand-600);color:#fff;font-size:14px;font-weight:600;
  padding:10px 18px;border-radius:var(--r-sm);transition:top .2s var(--ease);
}
.skip-link:focus{top:12px}

.container-x{max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container-x{padding:0 32px}}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease),background .22s var(--ease);
}
.site-header.is-scrolled{background:#fff;box-shadow:var(--sh-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:60px}
@media (min-width:1024px){.header-inner{height:68px}}

.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:16px;font-weight:700;color:var(--ink);letter-spacing:-.01em;
}
.logo-mark{
  position:relative;flex:none;width:30px;height:30px;border-radius:9px;
  background:var(--brand-600);box-shadow:var(--sh-sm);
}
.logo-mark::after{
  content:"";position:absolute;left:8px;top:8px;width:12px;height:12px;
  border:2px solid #fff;border-radius:3px;border-top-color:transparent;
  transform:rotate(45deg);
}

.nav-desktop{display:none;align-items:center;gap:4px}
@media (min-width:1024px){.nav-desktop{display:flex}}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;
  font-size:15px;color:var(--text);border-radius:8px;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:14px}
.link-quiet{
  display:none;font-size:14px;color:var(--muted);text-decoration:underline;
  text-underline-offset:4px;text-decoration-thickness:1px;
  transition:color .2s var(--ease);
}
.link-quiet:hover{color:var(--accent)}
@media (min-width:1180px){.link-quiet{display:inline-block}}
.header-cta{display:none}
@media (min-width:768px){.header-cta{display:inline-flex}}

.burger{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.burger:hover{border-color:var(--brand-100);box-shadow:var(--sh-sm)}
.burger span{position:relative;width:18px;height:1.5px;background:var(--ink);border-radius:2px;transition:background .2s}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--ease);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
@media (min-width:1024px){.burger{display:none}}

/* 移动端抽屉 */
.panel-mask{position:fixed;inset:0;background:rgba(12,27,51,.32);z-index:90}
.mobile-panel{
  position:fixed;top:0;right:0;bottom:0;z-index:100;
  width:min(86vw,360px);background:#fff;border-left:1px solid var(--line);
  box-shadow:var(--sh-lg);padding:28px 22px;
  display:flex;flex-direction:column;gap:4px;overflow-y:auto;
  transform:translateX(102%);transition:transform .28s var(--ease);
}
.mobile-panel.open{transform:none}
.mobile-panel .panel-title{
  font-size:12px;letter-spacing:.08em;color:var(--muted);margin-bottom:12px;
}
.m-link{
  display:block;padding:14px 2px;font-size:18px;color:var(--ink);
  border-bottom:1px solid var(--line);transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.m-link:hover{color:var(--brand-600);padding-left:6px}
.m-link.active{color:var(--brand-600);font-weight:600}
.mobile-panel .btn{margin-top:24px}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:var(--r-sm)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 14px rgba(242,107,58,.22)}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-primary:active{transform:none;box-shadow:var(--sh-sm)}
.btn-outline{background:#fff;color:var(--brand-600);border-color:var(--brand-600)}
.btn-outline:hover{background:var(--brand-50);transform:translateY(-1px)}
.btn-outline:active{transform:none}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand-600);
  text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px;
  transition:color .2s var(--ease);
}
.link-arrow:hover{color:var(--accent)}
.link-arrow svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ===================== 标签 / 胶囊 ===================== */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--brand-50);color:var(--brand-700);border:1px solid var(--brand-100);
}
.pill-support{background:rgba(14,159,138,.10);color:#0B7F6E;border-color:rgba(14,159,138,.20)}
.pill-accent{background:rgba(242,107,58,.10);color:var(--accent-600);border-color:rgba(242,107,58,.20)}

/* ===================== 首页头部条（含面包屑 / H1） ===================== */
.page-hero{background:#fff;border-bottom:1px solid var(--line);padding:36px 0 44px}
@media (min-width:1024px){.page-hero{padding:52px 0 64px}}

.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:24px}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:#C6CEDA}
.crumbs a{transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--brand-600)}
.crumbs [aria-current="page"]{color:var(--text)}

.hero-grid{display:grid;gap:32px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.25fr 1fr;gap:52px}}
.hero-lead{margin-top:18px;font-size:17px;line-height:1.85;color:var(--text);max-width:38em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.hero-points svg{width:18px;height:18px;color:var(--support);flex:none}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-md)}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* ===================== 数据条 ===================== */
.stat-band{background:#fff;border-bottom:1px solid var(--line)}
.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
@media (min-width:768px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat-item{padding:22px 18px;border-top:1px solid var(--line)}
@media (max-width:767px){.stat-item:nth-child(-n+2){border-top:0}}
@media (min-width:768px){
  .stat-item{border-top:0;border-left:1px solid var(--line);padding:28px 24px}
  .stat-item:first-child{border-left:0}
}
.stat-num{font-size:clamp(26px,3vw,34px);font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat-label{margin-top:6px;font-size:13.5px;color:var(--muted)}

/* ===================== 区块通用 ===================== */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:80px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{margin-bottom:36px}
.sec-head h2{margin-bottom:12px}
.sec-head p{font-size:15.5px;line-height:1.85;color:var(--muted);max-width:56em}

/* ===================== Z 字形交错卡片 ===================== */
.zig-grid{display:grid;gap:24px}
.zig-card{
  display:grid;gap:20px;align-items:center;
  padding:20px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-md);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.zig-card:hover{box-shadow:var(--sh-lg);transform:translateY(-4px);border-color:var(--brand-100)}
@media (min-width:900px){
  .zig-card{grid-template-columns:1.12fr .88fr;gap:36px;padding:26px}
  .zig-card.rev .zig-text{order:2}
  .zig-card.rev .zig-media{order:1}
}
.zig-index{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--accent);font-variant-numeric:tabular-nums;margin-bottom:10px;
}
.zig-text h3{margin-bottom:12px}
.zig-text p{font-size:15.5px;line-height:1.85}
.zig-media{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:var(--brand-50)}
.zig-media img{width:100%;aspect-ratio:16/11;object-fit:cover}

.tick-list{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);display:grid;gap:10px}
.tick-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--muted);line-height:1.7}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;
  background:var(--brand-100);border:1.5px solid var(--brand-600);
}

/* ===================== 时间轴 ===================== */
.timeline{position:relative;padding-left:30px;max-width:820px}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:14px;width:1px;background:var(--line)}
.tl-item{position:relative;padding-bottom:30px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-29px;top:7px;width:11px;height:11px;border-radius:50%;
  background:#fff;border:2px solid var(--brand-600);box-shadow:0 0 0 4px var(--brand-50);
}
.tl-item h3{margin-bottom:8px;font-size:19px}
.tl-item h3 span{color:var(--accent);font-size:13px;font-weight:700;letter-spacing:.12em;margin-right:10px;font-variant-numeric:tabular-nums}
.tl-item p{font-size:15.5px;line-height:1.85;color:var(--text)}

/* ===================== 结论段 ===================== */
.conclusion{max-width:820px}
.conclusion-title{font-size:clamp(22px,2.4vw,30px);line-height:1.35;margin-bottom:18px}
.conclusion-sub{
  margin-top:30px;font-size:16px;font-weight:600;color:var(--brand-600);
  padding-left:14px;border-left:3px solid var(--brand-600);line-height:1.5;
}
.conclusion p{margin-top:16px;font-size:16px;line-height:1.9}
.conclusion ul{margin-top:16px;display:grid;gap:10px}
.conclusion ul li{position:relative;padding-left:20px;font-size:15.5px;color:var(--text)}
.conclusion ul li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--support);
}

/* ===================== FAQ ===================== */
.faq-wrap{max-width:800px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0 20px 16px;border-left:3px solid transparent;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:border-color .22s var(--ease),color .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex:none;width:9px;height:9px;margin-top:-5px;
  border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);
  transform:rotate(45deg);transition:transform .24s var(--ease),border-color .22s var(--ease);
}
.faq-item summary:hover{color:var(--brand-600)}
.faq-item[open] summary{border-left-color:var(--brand-600)}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--brand-600)}
.faq-body{padding:0 0 22px 16px;font-size:15.5px;line-height:1.9;color:var(--text);max-width:44em}

/* ===================== 底部 CTA 区 ===================== */
.cta-band{background:var(--brand-50);border-top:1px solid var(--brand-100);padding:48px 0}
@media (min-width:1024px){.cta-band{padding:64px 0}}
.cta-inner{display:grid;gap:24px;align-items:center}
@media (min-width:900px){.cta-inner{grid-template-columns:1.4fr .6fr;gap:48px}}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:12px}
.cta-inner p{font-size:15.5px;line-height:1.85;color:var(--text);max-width:40em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ===================== 页脚 ===================== */
.site-footer{background:#fff;border-top:1px solid var(--line);padding-top:56px}
.footer-grid{display:grid;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr}}
.footer-intro p{margin-top:14px;font-size:14px;line-height:1.85;color:var(--muted);max-width:34em}
.footer-contact{margin-top:18px;display:grid;gap:10px}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted)}
.footer-contact svg{width:18px;height:18px;color:var(--brand-600);flex:none}
.footer-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px}
.footer-links{display:grid;gap:10px}
.footer-links a{
  display:inline-block;font-size:14px;color:var(--muted);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-links a:hover{color:var(--brand-600);transform:translateX(2px)}
.footer-bottom{
  margin-top:40px;border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px}
.fb-links a{transition:color .2s var(--ease)}
.fb-links a:hover{color:var(--brand-600)}

/* ===================== 底部固定转化条 ===================== */
.dock{
  position:fixed;left:0;right:0;bottom:0;z-index:120;
  display:flex;align-items:center;gap:12px;
  padding:10px 16px;background:#fff;
  border-top:1px solid var(--line);
  box-shadow:0 -6px 24px rgba(12,27,51,.08);
}
.dock-tip{
  flex:1 1 auto;min-width:0;font-size:13.5px;color:var(--text);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.dock .btn{flex:none}
.dock .btn-primary{padding:11px 20px;border-radius:999px}
.dock-link{
  display:none;font-size:14px;font-weight:600;color:var(--brand-600);
  text-decoration:underline;text-underline-offset:5px;
}
.dock-link:hover{color:var(--accent)}
@media (min-width:768px){.dock-link{display:inline-block}}
@media (min-width:1024px){
  .dock{
    left:50%;right:auto;transform:translateX(-50%);
    bottom:16px;width:calc(100% - 64px);max-width:720px;
    border:1px solid var(--line);border-radius:999px;
    padding:10px 14px 10px 24px;box-shadow:var(--sh-lg);
  }
}