/* roulang page: index */
:root{
  --brand:#17D2A0;
  --brand-dark:#0FA37D;
  --brand-soft:rgba(23,210,160,.08);
  --brand-line:rgba(23,210,160,.45);
  --ink:#101418;
  --text:#1B2026;
  --muted:#5A6470;
  --line:#E6E9E4;
  --line-soft:#EDEFEA;
  --bg:#F6F7F4;
  --white:#FFFFFF;
  --orange:#FF7A3C;
  --danger:#D94A3D;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-1:0 1px 2px rgba(16,20,24,.06);
  --shadow-2:0 8px 24px rgba(16,20,24,.10);
  --container:1200px;
  --section:88px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:var(--brand-dark);text-decoration:none;transition:color .2s ease}
a:hover{text-decoration:underline;text-underline-offset:3px}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(246,247,244,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.97);
  border-bottom-color:var(--line);
  box-shadow:0 1px 2px rgba(16,20,24,.05);
}
.nav-inner{
  display:flex;align-items:center;gap:20px;
  height:64px;transition:height .22s ease;
}
.site-header.is-scrolled .nav-inner{height:52px}

.logo{display:flex;flex-direction:column;gap:1px;flex-shrink:0}
.logo:hover{text-decoration:none}
.logo-main{font-size:19px;font-weight:800;color:var(--ink);letter-spacing:-.2px;line-height:1.2}
.logo-sub{font-size:11px;letter-spacing:.5px;color:var(--brand-dark);font-weight:500;line-height:1.3}

.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-links a{
  display:block;padding:8px 11px;border-radius:8px;
  font-size:15px;color:var(--text);white-space:nowrap;position:relative;
  transition:background .2s ease,color .2s ease;
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand-dark);text-decoration:none}
.nav-links a.is-active{color:var(--brand-dark);font-weight:600}
.nav-links a.is-active::after{
  content:"";position:absolute;left:11px;right:11px;bottom:2px;
  height:2px;background:var(--brand);border-radius:2px;
}

.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search{position:relative}
.search input{
  width:210px;height:38px;padding:0 14px 0 36px;
  border:1px solid var(--line);border-radius:999px;background:var(--white);
  font-size:14px;outline:none;transition:width .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.search input::placeholder{color:#9AA3AC}
.search input:focus{width:280px;border-color:var(--brand);box-shadow:0 0 0 4px rgba(23,210,160,.12)}
.search svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:15px;height:15px;color:#9AA3AC;pointer-events:none}

.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:var(--white);cursor:pointer;align-items:center;justify-content:center;flex-shrink:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:transform .22s ease,background .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{background:var(--brand);color:#062A21}
.btn-primary:hover{background:#12BC8F;box-shadow:0 8px 20px rgba(23,210,160,.32)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand-dark)}
.btn-ghost:hover{background:var(--brand-soft)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:999px}
.link-more{font-size:14px;font-weight:600;color:var(--brand-dark);display:inline-flex;align-items:center;gap:6px}
.link-more::after{content:"→";transition:transform .2s ease}
.link-more:hover{text-decoration:none}
.link-more:hover::after{transform:translateX(4px)}

/* ---------- hero ---------- */
.hero{padding:64px 0 76px;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  color:var(--brand-dark);background:var(--brand-soft);border:1px solid var(--brand-line);
  padding:5px 12px;border-radius:999px;margin-bottom:20px;letter-spacing:.3px;
}
.hero h1{
  font-size:36px;line-height:1.4;font-weight:800;letter-spacing:-.5px;
  color:var(--ink);margin-bottom:18px;
}
.hero-sub{font-size:17px;color:var(--muted);max-width:540px;margin-bottom:28px;line-height:1.85}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:30px}
.hero-points{display:grid;gap:11px}
.hero-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--muted)}
.hero-points li::before{
  content:"";flex-shrink:0;width:7px;height:7px;margin-top:11px;
  border-radius:2px;background:var(--brand);
}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--radius-img);box-shadow:var(--shadow-2);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-img);
  background:linear-gradient(180deg,rgba(16,20,24,0) 45%,rgba(16,20,24,.42) 100%);
  pointer-events:none;
}
.hero-badge{
  position:absolute;left:18px;bottom:18px;z-index:2;
  background:rgba(16,20,24,.8);color:#E8FBF4;
  font-size:12.5px;padding:9px 15px;border-radius:10px;letter-spacing:.3px;
  backdrop-filter:blur(4px);
}

/* ---------- sections ---------- */
.section{padding:var(--section) 0}
.section--alt{background:#FFFFFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;margin-bottom:36px;
}
.section-head h2{font-size:26px;font-weight:700;line-height:1.4;color:var(--ink)}
.section-head .lead{font-size:15px;color:var(--muted);margin-top:8px;max-width:640px}

/* ---------- kpi ---------- */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.kpi{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px 18px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.kpi:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.kpi-num{
  font-size:44px;font-weight:800;color:var(--ink);line-height:1;
  letter-spacing:-1px;font-variant-numeric:tabular-nums;font-family:var(--mono);
}
.kpi-num em{font-size:15px;font-style:normal;font-weight:700;color:var(--brand-dark);margin-left:4px;font-family:inherit}
.kpi-label{
  margin-top:14px;padding-top:12px;border-top:1px solid var(--line-soft);
  font-size:13.5px;color:var(--muted);line-height:1.7;
}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.bento-main{
  grid-column:span 2;grid-row:span 2;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.bento-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-line)}
.bento-main img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--brand-soft)}
.bento-main-body{padding:26px;display:flex;flex-direction:column;gap:12px;flex:1}
.bento-main-body h3{font-size:19px;font-weight:700;color:var(--ink);line-height:1.5}
.bento-main-body p{font-size:15px;color:var(--muted);line-height:1.85}
.bento-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;display:flex;flex-direction:column;gap:9px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.bento-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand)}
.bento-num{
  font-family:var(--mono);font-size:12.5px;font-weight:700;
  color:var(--brand-dark);letter-spacing:.5px;
}
.bento-card h3{font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.5}
.bento-card p{font-size:14px;color:var(--muted);line-height:1.75}

/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;display:flex;flex-direction:column;gap:20px;
}
.compare-col--after{
  border-color:var(--brand-line);
  background:linear-gradient(180deg,rgba(23,210,160,.07) 0%,#FFFFFF 60%);
}
.compare-col h3{
  font-size:17px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;gap:10px;
}
.compare-col h3 .dot{
  width:9px;height:9px;border-radius:3px;background:#C6CCC6;flex-shrink:0;
}
.compare-col--after h3 .dot{background:var(--brand)}
.metric{display:flex;flex-direction:column;gap:7px}
.metric-top{display:flex;justify-content:space-between;font-size:14px;color:var(--muted)}
.metric-top b{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums}
.bar{height:9px;border-radius:999px;background:var(--line-soft);overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:#C6CCC6}
.bar--brand i{background:var(--brand)}
.compare-col ul{display:grid;gap:10px}
.compare-col ul li{
  font-size:14.5px;color:var(--muted);padding-left:16px;position:relative;line-height:1.8;
}
.compare-col ul li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:#C6CCC6;
}
.compare-col--after ul li::before{background:var(--brand)}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  color:var(--orange);border:1px solid rgba(255,122,60,.45);background:rgba(255,122,60,.08);
  padding:3px 10px;border-radius:999px;
}

/* ---------- posts ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand)}
.post-card:hover h3 a{color:var(--brand-dark)}
.post-cover{display:block;background:var(--brand-soft)}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body h3{
  font-size:17px;font-weight:700;line-height:1.55;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body h3 a{color:inherit}
.post-body h3 a:hover{text-decoration:none}
.post-body p{
  font-size:14px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:#8A939C;
}
.post-meta time{font-family:var(--mono);font-variant-numeric:tabular-nums}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  font-size:12px;font-weight:600;color:var(--brand-dark);
  background:var(--brand-soft);border:1px solid var(--brand-line);
  padding:2px 10px;border-radius:999px;line-height:1.7;
}
.empty-state{
  grid-column:1/-1;background:var(--white);border:1px dashed var(--line);
  border-radius:var(--radius-card);padding:56px 24px;text-align:center;
}
.empty-state .empty-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:14px;
  background:var(--brand-soft);display:flex;align-items:center;justify-content:center;
  color:var(--brand-dark);font-size:22px;font-weight:800;font-family:var(--mono);
}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:14px}

/* ---------- faq ---------- */
.faq{max-width:900px;margin:0 auto;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line-soft)}
.faq-item:last-child{border-bottom:none}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:20px 24px;background:none;border:none;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:background .2s ease;
}
.faq-q:hover{background:#F7F9F6}
.faq-q .num{
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--brand-dark);flex-shrink:0;
}
.faq-q .arrow{
  margin-left:auto;flex-shrink:0;width:20px;height:20px;color:var(--muted);
  transition:transform .25s ease;
}
.faq-item.is-open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.faq-a p{padding:0 24px 22px 58px;font-size:15px;color:var(--muted);line-height:1.9}
.faq-item.is-open .faq-a{max-height:420px}

/* ---------- form ---------- */
.cta-panel{
  display:grid;grid-template-columns:5fr 7fr;gap:40px;
  background:var(--white);border:1px solid var(--line);border-radius:18px;
  padding:44px;box-shadow:var(--shadow-1);
}
.cta-panel h2{font-size:26px;font-weight:700;color:var(--ink);line-height:1.45;margin-bottom:14px}
.cta-panel .lead{font-size:15px;color:var(--muted);margin-bottom:24px}
.cta-list{display:grid;gap:12px}
.cta-list li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);line-height:1.8}
.cta-list li::before{
  content:"";flex-shrink:0;width:6px;height:6px;margin-top:12px;border-radius:2px;background:var(--brand);
}
.form-row{display:grid;gap:16px;grid-template-columns:1fr 1fr;margin-bottom:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:14px;color:var(--muted);font-weight:500}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;border:1px solid #D8DCD5;
  border-radius:var(--radius-btn);background:var(--white);font-size:15px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:106px;padding:12px 14px;resize:vertical;line-height:1.75}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 4px rgba(23,210,160,.13);
}
.form-note{font-size:12.5px;color:#8A939C;margin-top:14px;line-height:1.8}
.form-msg{
  display:none;margin-top:14px;padding:11px 16px;border-radius:10px;
  font-size:14px;background:var(--brand-soft);border-left:3px solid var(--brand);color:var(--brand-dark);
}
.form-msg.is-show{display:block}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#B9C0C8;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-logo{font-size:18px;font-weight:800;color:#FFFFFF;margin-bottom:12px;letter-spacing:-.2px}
.footer-desc{font-size:14px;line-height:1.9;color:#9AA3AC;max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--brand);margin-bottom:16px;letter-spacing:.4px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:#B9C0C8}
.footer-col a:hover{color:#FFFFFF;text-decoration:none}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#7C858F;
}
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:150;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--white);color:var(--ink);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease,transform .22s ease;
}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-3px);border-color:var(--brand)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:200;background:rgba(16,20,24,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:var(--white);padding:22px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;gap:6px;
}
.drawer.is-open .drawer-panel{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-head strong{font-size:15px;color:var(--ink)}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  background:var(--white);cursor:pointer;font-size:18px;line-height:1;color:var(--muted);
}
.drawer-panel a.drawer-link{
  display:block;padding:13px 14px;border-radius:10px;font-size:15px;color:var(--text);
  border-bottom:1px solid var(--line-soft);
}
.drawer-panel a.drawer-link:hover{background:var(--brand-soft);color:var(--brand-dark);text-decoration:none}
.drawer-panel a.drawer-link.is-active{color:var(--brand-dark);font-weight:700;background:var(--brand-soft)}
.drawer-cta{margin-top:16px;width:100%}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .search{display:none}
}
@media (max-width:1023px){
  :root{--section:56px}
  .hero{padding:44px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual img{max-height:320px;aspect-ratio:16/9}
  .hero h1{font-size:30px}
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento-main{grid-column:span 2;grid-row:auto}
  .compare{grid-template-columns:1fr}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .cta-panel{grid-template-columns:1fr;gap:28px;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .section-head h2,.cta-panel h2{font-size:22px}
  .hero h1{font-size:27px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{flex:1}
  .kpi-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .kpi-num{font-size:34px}
  .bento{grid-template-columns:1fr}
  .bento-main{grid-column:span 1}
  .post-grid{grid-template-columns:1fr}
  .faq-q{font-size:15.5px;padding:17px 18px;gap:10px}
  .faq-a p{padding:0 18px 20px 46px}
  .cta-panel{padding:24px}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
  .logo-main{font-size:17px}
}

/* roulang page: article */
:root{
  --brand:#17D2A0;
  --brand-dark:#0FA37D;
  --brand-soft:rgba(23,210,160,.08);
  --brand-soft-2:rgba(23,210,160,.16);
  --accent:#FF7A3C;
  --ink:#101418;
  --text:#1B2026;
  --muted:#5A6470;
  --bg:#F6F7F4;
  --surface:#FFFFFF;
  --line:#E6E9E4;
  --line-strong:#D8DCD5;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-1:0 1px 2px rgba(16,20,24,.06);
  --shadow-2:0 8px 24px rgba(16,20,24,.10);
  --nav-h:64px;
  --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","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-dark);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.4;font-weight:800;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,247,244,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease,background .22s ease;
}
.site-header.is-scrolled{--nav-h:52px;background:rgba(255,255,255,.96);box-shadow:0 1px 12px rgba(16,20,24,.07)}
.nav-inner{display:flex;align-items:center;gap:22px;height:var(--nav-h);transition:height .22s ease}
.logo{display:flex;flex-direction:column;justify-content:center;line-height:1.15;flex:0 0 auto}
.logo-main{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.logo-sub{font-size:11px;letter-spacing:.5px;color:var(--muted);font-weight:500;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:20px;margin-left:6px}
.nav-links a{
  font-size:15px;color:var(--muted);font-weight:500;padding:4px 0;
  border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease;
}
.nav-links a:hover{color:var(--ink)}
.nav-links a.is-active{color:var(--ink);border-bottom-color:var(--brand);font-weight:700}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.search{display:flex;align-items:center;gap:8px;width:220px;height:38px;padding:0 12px;background:#fff;border:1px solid var(--line-strong);border-radius:999px;transition:width .22s ease,border-color .2s ease,box-shadow .2s ease}
.search svg{width:16px;height:16px;color:var(--muted);flex:0 0 auto}
.search input{width:100%;border:0;background:transparent;outline:none;font-size:14px}
.search input::placeholder{color:#98A1AB}
.search:focus-within{width:280px;border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-btn);font-weight:700;transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease}
.btn-primary{background:var(--brand);color:#08211A;padding:12px 22px;font-size:15px}
.btn-primary:hover{background:#12BE90;transform:translateY(-2px);color:#08211A}
.btn-ghost{border:1px solid var(--brand);color:var(--brand-dark);padding:11px 20px;font-size:15px;background:transparent}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:999px}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand-dark)}
.btn-link::after{content:"→";transition:transform .2s ease}
.btn-link:hover::after{transform:translateX(4px)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-strong);background:#fff;align-items:center;justify-content:center}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- breadcrumb ---------- */
.crumbs{padding:22px 0 4px;font-size:13px;color:var(--muted)}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumbs li::after{content:"/";margin-left:8px;color:#B7BEC6}
.crumbs li:last-child::after{content:""}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand-dark)}
.crumbs .current{color:var(--text);font-weight:600;max-width:460px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article layout ---------- */
.article-wrap{padding:18px 0 88px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.article-head{padding:8px 0 26px;border-bottom:1px solid var(--line)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:700;background:var(--brand-soft);color:var(--brand-dark)}
.badge-accent{background:rgba(255,122,60,.12);color:#C1511F}
.article-head h1{font-size:34px;line-height:1.35;margin:16px 0 18px;max-width:820px}
.meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--muted)}
.meta span{display:inline-flex;align-items:center;gap:6px}
.meta b{font-weight:700;color:var(--text)}
.hero-cover{margin:26px 0 34px;border-radius:var(--radius-img);overflow:hidden;background:var(--brand-soft);aspect-ratio:16/9}
.hero-cover img{width:100%;height:100%;object-fit:cover}

.article-body{max-width:780px;font-size:17px;line-height:1.9}
.article-body p{margin:0 0 1.1em}
.article-body h2{font-size:24px;margin:2.2em 0 .8em;padding-left:14px;position:relative}
.article-body h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:3px;background:var(--brand)}
.article-body h3{font-size:19px;font-weight:700;margin:1.8em 0 .6em}
.article-body h4{font-size:17px;margin:1.6em 0 .5em}
.article-body img{border-radius:12px;margin:1.3em 0;height:auto}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:12px;color:var(--muted);text-align:center;margin-top:8px}
.article-body blockquote{margin:1.5em 0;padding:16px 20px;border-left:3px solid var(--brand);background:var(--brand-soft);border-radius:0 12px 12px 0;color:#3C4652}
.article-body ul,.article-body ol{padding-left:1.5em;margin:0 0 1.2em;line-height:1.85}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.35em 0}
.article-body a{color:var(--brand-dark);border-bottom:1px solid rgba(15,163,125,.35)}
.article-body a:hover{border-bottom-color:var(--brand-dark)}
.article-body strong{font-weight:700;color:var(--ink)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;background:#fff}
.article-body th{background:var(--brand-soft);text-align:left;font-weight:700}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line)}
.article-body table{border-radius:14px;overflow:hidden}
.article-body .table-wrap,.article-body .table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:14px;margin:1.4em 0}

.article-side{position:sticky;top:calc(var(--nav-h) + 24px);display:grid;gap:18px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1)}
.side-card h3{font-size:15px;margin-bottom:14px}
.side-list{display:grid;gap:2px}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 12px;border-radius:10px;font-size:14px;color:var(--text);border:1px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease}
.side-list a:hover{background:#F0F3EE;color:var(--brand-dark);border-color:var(--line)}
.side-list a span{color:var(--muted);font-size:12px}
.side-note{font-size:13px;color:var(--muted);line-height:1.8}
.tips{display:grid;gap:10px;margin-top:14px}
.tips li{display:flex;gap:8px;font-size:13.5px;color:var(--muted);line-height:1.7}
.tips li::before{content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px}

/* ---------- empty state ---------- */
.empty-state{background:#fff;border:1px dashed var(--line-strong);border-radius:var(--radius-card);padding:56px 24px;text-align:center}
.empty-state .icon{width:54px;height:54px;margin:0 auto 16px;border-radius:50%;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;color:var(--brand-dark);font-size:24px;font-weight:800}
.empty-state p{color:var(--muted);margin:8px 0 20px}

/* ---------- related ---------- */
.section{padding:88px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:26px}
.section-head p{font-size:14px;color:var(--muted);margin-top:8px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand)}
.card-cover{aspect-ratio:16/9;background:var(--brand-soft);overflow:hidden}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.5}
.card:hover .card-body h3{color:var(--brand-dark)}
.card-body p{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted);margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}

/* ---------- cta strip ---------- */
.cta-strip{background:var(--ink);color:#E7EBEF;border-radius:20px;padding:44px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}
.cta-strip h2{color:#fff;font-size:24px;margin-bottom:10px}
.cta-strip p{color:#B9C0C8;font-size:15px;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#B9C0C8;padding:64px 0 0;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-logo{color:#fff;font-size:18px;font-weight:800;margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.85;color:#98A1AB;max-width:320px}
.footer-col h4{color:var(--brand);font-size:14px;margin-bottom:16px;font-weight:700}
.footer-col li{margin-bottom:10px}
.footer-col a{color:#B9C0C8;font-size:14px}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:#8A939D}

/* ---------- toast/inline notice ---------- */
.notice{display:flex;gap:10px;align-items:flex-start;padding:14px 18px;border-radius:12px;background:#fff;border:1px solid var(--line);border-left:3px solid var(--brand);font-size:14px;color:var(--muted);margin:26px 0 0}
.notice.warn{border-left-color:var(--accent)}

.skeleton{background:var(--brand-soft);border-radius:8px;animation:breathe 1.6s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:1}50%{opacity:.55}}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .article-grid{grid-template-columns:minmax(0,1fr) 260px;gap:36px}
}
@media (max-width:1023px){
  .nav-links{
    position:fixed;left:0;right:0;top:var(--nav-h);bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:18px 24px 40px;overflow-y:auto;
    transform:translateX(102%);transition:transform .28s ease;
    border-top:1px solid var(--line);margin-left:0;
  }
  .site-header.nav-open .nav-links{transform:translateX(0)}
  .nav-links a{padding:16px 4px;font-size:17px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-links a.is-active{border-bottom-color:var(--brand)}
  .nav-toggle{display:inline-flex}
  .search{display:none}
  .article-grid{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
  .section{padding:64px 0}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .article-head h1{font-size:28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .logo-main{font-size:15px}
  .logo-sub{font-size:10px}
  .article-wrap{padding:12px 0 56px}
  .article-head h1{font-size:23px}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:17px}
  .article-side{grid-template-columns:minmax(0,1fr)}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .section-head{flex-direction:column;align-items:flex-start}
  .cta-strip{padding:28px 22px;border-radius:16px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .crumbs .current{white-space:normal;max-width:100%}
}

/* roulang page: category1 */
:root{
  --brand:#17D2A0;
  --brand-dark:#0FA37D;
  --brand-soft:rgba(23,210,160,.08);
  --orange:#FF7A3C;
  --ink:#101418;
  --bg:#F6F7F4;
  --bg-alt:#F0F3EE;
  --text:#1B2026;
  --muted:#5A6470;
  --border:#E6E9E4;
  --line:#D8DCD5;
  --white:#FFFFFF;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:14px;
  --radius-pill:999px;
  --shadow-card:0 1px 2px rgba(16,20,24,.06);
  --shadow-hover:0 8px 24px rgba(16,20,24,.10);
  --container:1200px;
  --gap:24px;
  --section-y:88px;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;font-family:var(--font);background:var(--bg);color:var(--text);
  font-size:17px;line-height:1.9;letter-spacing:.01em;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--brand-dark);text-decoration:none;transition:color .22s ease,text-decoration-color .22s ease;}
a:hover{text-decoration:underline;text-underline-offset:3px;}
h1,h2,h3,h4{margin:0;line-height:1.4;color:var(--ink);font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{border:none;background:none;cursor:pointer;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--border);
  transition:background .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{background:rgba(255,255,255,.99);box-shadow:0 6px 20px rgba(16,20,24,.07);}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px;transition:height .22s ease;}
.site-header.is-scrolled .nav-inner{height:52px;}
.logo{display:flex;flex-direction:column;justify-content:center;flex:0 0 auto;text-decoration:none;}
.logo:hover{text-decoration:none;}
.logo-main{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.02em;line-height:1.25;}
.logo-sub{font-size:11px;letter-spacing:.5px;color:var(--muted);line-height:1.4;}
.nav-links{display:flex;align-items:center;gap:24px;flex:1 1 auto;}
.nav-links a{
  position:relative;font-size:15px;color:var(--text);padding:4px 0;white-space:nowrap;
  transition:color .22s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover{color:var(--brand-dark);text-decoration:none;}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--brand-dark);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto;}
.search{
  display:flex;align-items:center;gap:8px;height:38px;width:220px;padding:0 14px;
  background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius-pill);
  transition:width .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.search svg{width:16px;height:16px;flex:0 0 auto;color:var(--muted);}
.search input{
  border:none;background:transparent;outline:none;width:100%;font-size:14px;
}
.search input::placeholder{color:#98A0A9;}
.search:focus-within{width:280px;background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(23,210,160,.12);}
.nav-toggle{
  display:none;position:relative;width:38px;height:38px;border:1px solid var(--border);
  border-radius:10px;background:#fff;flex:0 0 auto;
}
.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after{
  content:"";position:absolute;left:50%;width:16px;height:2px;border-radius:2px;
  background:var(--ink);transform:translateX(-50%);transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle::before{top:12px;}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle::after{top:23px;}
.nav-toggle.is-open::before{transform:translateX(-50%) translateY(6px) rotate(45deg);}
.nav-toggle.is-open span{opacity:0;}
.nav-toggle.is-open::after{transform:translateX(-50%) translateY(-6px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  text-decoration:none;cursor:pointer;transition:background .22s ease,color .22s ease,
  border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--brand);color:#06251C;box-shadow:0 1px 2px rgba(16,20,24,.08);}
.btn-primary:hover{background:#14BE90;color:#04211A;box-shadow:var(--shadow-hover);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand-dark);}
.btn-ghost:hover{background:var(--brand-soft);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:var(--radius-pill);}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:4px;font-size:14px;font-weight:600;color:var(--brand-dark);}
.link-arrow::after{content:"→";transition:transform .22s ease;}
.link-arrow:hover::after{transform:translateX(4px);}

/* ============ 面包屑 / Hero ============ */
.page-hero{
  position:relative;color:#fff;padding:64px 0 68px;
  background:
    linear-gradient(180deg,rgba(16,20,24,.93) 0%,rgba(16,20,24,.86) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:80px 80px;opacity:.5;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#9BA5AF;margin-bottom:22px;}
.breadcrumb a{color:#C6CDD4;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#5A6470;}
.breadcrumb .current{color:var(--brand);}
.page-hero h1{
  color:#fff;font-size:36px;font-weight:800;line-height:1.35;max-width:900px;letter-spacing:.01em;
}
.page-hero .hero-sub{
  margin-top:18px;font-size:18px;color:#D3D9DE;max-width:720px;line-height:1.75;
}
.page-hero .hero-lead{
  margin-top:14px;font-size:15px;color:#9BA5AF;max-width:760px;line-height:1.9;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.page-hero .btn-ghost{color:var(--brand);border-color:rgba(23,210,160,.55);}
.page-hero .btn-ghost:hover{background:rgba(23,210,160,.14);}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:32px;padding-top:24px;border-top:1px solid rgba(255,255,255,.10);}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:#C6CDD4;}
.hero-points li::before{
  content:"";width:8px;height:8px;border-radius:2px;background:var(--brand);flex:0 0 auto;
}

/* ============ 通用板块 ============ */
.section{padding:var(--section-y) 0;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:var(--ink);color:#C6CDD4;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
.section-head h2{font-size:26px;font-weight:800;position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--brand);
}
.section-head p{margin-top:10px;font-size:15px;color:var(--muted);max-width:720px;}

/* ============ 左索引 + 右长条目 ============ */
.two-col{display:grid;grid-template-columns:280px minmax(0,1fr);gap:44px;align-items:start;}
.side-index{position:sticky;top:88px;}
.side-index .side-title{
  font-size:14px;font-weight:700;color:var(--ink);letter-spacing:.04em;
  padding-bottom:12px;border-bottom:1px solid var(--border);margin-bottom:14px;
}
.side-index ul{display:flex;flex-direction:column;gap:2px;}
.side-index li a{
  display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:10px;
  font-size:14px;color:var(--text);border-left:2px solid transparent;
  transition:background .22s ease,border-color .22s ease,color .22s ease,padding-left .22s ease;
}
.side-index li a:hover{background:var(--bg-alt);border-left-color:var(--brand);color:var(--brand-dark);text-decoration:none;padding-left:16px;}
.side-index li a .idx{font-size:12px;font-weight:700;color:var(--brand-dark);}
.side-note{
  margin-top:22px;padding:18px;border:1px solid var(--border);border-left:3px solid var(--brand);
  border-radius:12px;background:#fff;font-size:13.5px;line-height:1.85;color:var(--muted);
  box-shadow:var(--shadow-card);
}
.side-note strong{color:var(--ink);display:block;margin-bottom:6px;font-size:14px;}

.entry-list{display:flex;flex-direction:column;gap:22px;}
.entry{
  position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:30px 32px;box-shadow:var(--shadow-card);overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.entry:hover{border-color:var(--brand);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.entry::before{
  content:attr(data-num);position:absolute;right:18px;top:2px;font-size:76px;font-weight:800;
  color:rgba(23,210,160,.06);line-height:1;font-variant-numeric:tabular-nums;pointer-events:none;
}
.entry-head{display:flex;gap:16px;align-items:flex-start;position:relative;z-index:2;}
.entry-num{
  font-size:15px;font-weight:800;color:var(--brand-dark);border:1px solid rgba(23,210,160,.35);
  background:var(--brand-soft);border-radius:10px;padding:6px 10px;flex:0 0 auto;line-height:1;
}
.entry-head h2{font-size:21px;font-weight:700;line-height:1.5;}
.tag{
  display:inline-block;font-size:12px;font-weight:600;line-height:1;padding:6px 10px;border-radius:var(--radius-pill);
  background:var(--bg-alt);color:var(--muted);margin-bottom:10px;
}
.tag-brand{background:var(--brand-soft);color:var(--brand-dark);}
.tag-warn{background:rgba(255,122,60,.12);color:#C2521F;}
.entry > p{margin-top:16px;font-size:16px;color:var(--text);line-height:1.9;position:relative;z-index:2;}
.point-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;position:relative;z-index:2;}
.point-list li{
  position:relative;padding-left:22px;font-size:15px;color:var(--muted);line-height:1.8;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:var(--brand);opacity:.85;
}
.entry-note{
  margin-top:18px;padding:14px 16px;background:var(--bg-alt);border-left:3px solid var(--brand);
  border-radius:10px;font-size:14px;color:var(--muted);line-height:1.8;position:relative;z-index:2;
}
.entry-note strong{color:var(--ink);}
.entry-figure{margin-top:20px;position:relative;z-index:2;}
.entry-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img);}
.entry-figure figcaption{margin-top:10px;font-size:12px;color:#8A929B;line-height:1.7;}

/* ============ 清单卡片 ============ */
.check-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.check-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.check-card:hover{border-color:var(--brand);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.check-card .mark{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
  border-radius:10px;background:var(--brand-soft);color:var(--brand-dark);font-size:13px;font-weight:800;
  margin-bottom:14px;
}
.check-card h3{font-size:17px;font-weight:700;margin-bottom:10px;}
.check-card p{font-size:14px;color:var(--muted);line-height:1.85;}

/* ============ FAQ ============ */
.faq-list{max-width:880px;border-top:1px solid var(--border);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);transition:color .22s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-dark);}
.faq-num{font-size:14px;font-weight:800;color:var(--brand-dark);font-variant-numeric:tabular-nums;flex:0 0 auto;}
.faq-icon{margin-left:auto;flex:0 0 auto;color:var(--muted);transition:transform .22s ease;}
.faq-item[open] .faq-icon{transform:rotate(180deg);}
.faq-answer{padding:0 0 22px 32px;font-size:15px;color:var(--muted);line-height:1.9;max-width:760px;}

/* ============ CTA + 表单 ============ */
.cta-band{
  position:relative;color:#fff;padding:72px 0;
  background:
    linear-gradient(180deg,rgba(16,20,24,.94) 0%,rgba(16,20,24,.88) 100%),
    url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  border-top:1px solid rgba(255,255,255,.08);
}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) 460px;gap:52px;align-items:start;}
.cta-band h2{color:#fff;font-size:26px;font-weight:800;line-height:1.45;}
.cta-band .cta-desc{margin-top:16px;font-size:15.5px;color:#B9C0C8;line-height:1.9;max-width:560px;}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{position:relative;padding-left:22px;font-size:14.5px;color:#C6CDD4;line-height:1.8;}
.cta-points li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--brand);}
.cta-form{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:28px;
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;color:#B9C0C8;margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);color:#fff;
  border-radius:var(--radius-btn);padding:0 14px;height:46px;outline:none;
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.8;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#B9C0C8 50%),linear-gradient(135deg,#B9C0C8 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 15px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.field select option{color:var(--ink);}
.field input::placeholder,.field textarea::placeholder{color:#7C858E;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);background:rgba(255,255,255,.10);box-shadow:0 0 0 4px rgba(23,210,160,.16);
}
.form-privacy{margin-top:14px;font-size:12.5px;color:#8A929B;line-height:1.75;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#B9C0C8;padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-logo{font-size:17px;font-weight:800;color:#fff;letter-spacing:.02em;}
.footer-desc{margin-top:14px;font-size:13.5px;line-height:1.9;color:#8A929B;max-width:340px;}
.footer-col h4{font-size:14px;color:var(--brand);font-weight:700;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:#B9C0C8;transition:color .22s ease,padding-left .22s ease;}
.footer-col a:hover{color:#fff;text-decoration:none;padding-left:3px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.10);padding:22px 0 26px;font-size:12.5px;color:#7C858E;
}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .two-col{grid-template-columns:240px minmax(0,1fr);gap:32px;}
}
@media (max-width:1080px){
  .nav-toggle{display:block;}
  .search{display:none;}
  .nav-links{
    position:fixed;left:0;right:0;top:64px;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:10px 20px 20px;border-bottom:1px solid var(--border);
    box-shadow:0 18px 36px rgba(16,20,24,.14);max-height:calc(100vh - 64px);overflow-y:auto;
    transform:translateY(-10px);opacity:0;pointer-events:none;transition:transform .22s ease,opacity .22s ease;
  }
  .nav-links.is-open{transform:none;opacity:1;pointer-events:auto;}
  .nav-links a{padding:15px 2px;font-size:16px;border-bottom:1px solid var(--border);}
  .nav-links a:last-child{border-bottom:none;}
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--brand-dark);}
  .two-col{grid-template-columns:minmax(0,1fr);}
  .side-index{position:static;}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .cta-form{max-width:560px;}
}
@media (max-width:900px){
  .page-hero{padding:48px 0 52px;}
  .page-hero h1{font-size:30px;}
  .page-hero .hero-sub{font-size:16.5px;}
}
@media (max-width:767px){
  :root{--section-y:56px;}
  .container{padding:0 16px;}
  .section-head h2{font-size:22px;}
  .entry{padding:24px 20px;}
  .entry-head h2{font-size:19px;}
  .entry::before{font-size:58px;right:12px;}
  .entry-list{gap:16px;}
  .check-grid{grid-template-columns:minmax(0,1fr);}
  .check-card{padding:20px;}
  .faq-item summary{font-size:16px;gap:10px;}
  .faq-answer{padding-left:0;}
  .cta-band{padding:56px 0;}
  .cta-form{padding:22px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:32px;padding-bottom:36px;}
  .footer-desc{max-width:none;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
}
@media (max-width:420px){
  .page-hero h1{font-size:26px;}
  .entry-head{flex-direction:column;gap:12px;}
}

/* roulang page: category2 */
:root{
  --brand:#17D2A0;
  --brand-dark:#0FA37D;
  --brand-soft:rgba(23,210,160,.08);
  --brand-line:rgba(23,210,160,.42);
  --ink:#101418;
  --ink-2:#1B2026;
  --text:#1B2026;
  --muted:#5A6470;
  --line:#E6E9E4;
  --line-strong:#D8DCD5;
  --bg:#F6F7F4;
  --card:#FFFFFF;
  --accent:#FF7A3C;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-card:0 1px 2px rgba(16,20,24,.06);
  --shadow-hover:0 8px 24px rgba(16,20,24,.10);
  --ease:.22s ease;
  --sec-gap:88px;
  --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
h1,h2,h3,h4{margin:0;color:var(--ink-2);font-weight:700;line-height:1.4;}
h1{font-size:36px;letter-spacing:-.4px;line-height:1.35;}
h2{font-size:26px;line-height:1.38;}
h3{font-size:19px;line-height:1.45;}
p{margin:0;}
img{max-width:100%;display:block;height:auto;}
ul{margin:0;padding:0;list-style:none;}
a{color:var(--brand-dark);text-decoration:none;transition:color var(--ease);}
a:hover{text-decoration:underline;text-underline-offset:3px;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,247,244,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.97);border-bottom-color:var(--line);}
.nav-inner{display:flex;align-items:center;gap:22px;height:64px;transition:height var(--ease);}
.site-header.is-scrolled .nav-inner{height:52px;}
.logo{display:flex;flex-direction:column;justify-content:center;line-height:1.15;flex-shrink:0;text-decoration:none;}
.logo:hover{text-decoration:none;}
.logo-main{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.2px;}
.logo-sub{font-size:11px;letter-spacing:.5px;color:var(--muted);margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:20px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);
  padding:4px 0;white-space:nowrap;
}
.nav-links a:hover{color:var(--brand-dark);text-decoration:none;}
.nav-links a.is-active{color:var(--brand-dark);}
.nav-links a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-14px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search{
  position:relative;display:flex;align-items:center;
  border:1px solid var(--line-strong);border-radius:999px;background:#fff;
  height:38px;padding:0 12px;width:210px;transition:width var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.search svg{width:16px;height:16px;color:var(--muted);flex-shrink:0;margin-right:8px;}
.search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;line-height:1;}
.search input::placeholder{color:#98A2AC;}
.search:focus-within{width:280px;border-color:var(--brand);box-shadow:0 0 0 4px rgba(23,210,160,.12);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  padding:11px 20px;line-height:1.2;
  transition:transform var(--ease),background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
  white-space:nowrap;cursor:pointer;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand);color:#07231A;border:1px solid var(--brand);}
.btn-primary:hover{background:#13BE90;border-color:#13BE90;transform:translateY(-1px);box-shadow:0 6px 18px rgba(23,210,160,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand-dark);border:1px solid var(--brand-line);}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);}
.btn-light{background:#fff;color:var(--ink);border:1px solid #fff;}
.btn-light:hover{background:#EDF2EE;transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;
  color:var(--brand-dark);
}
.btn-link::after{content:"→";transition:transform var(--ease);}
.btn-link:hover{text-decoration:none;}
.btn-link:hover::after{transform:translateX(4px);}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line-strong);
  border-radius:10px;background:#fff;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);position:relative;border-radius:2px;transition:background var(--ease);}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--ease);
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:translateY(5px) rotate(45deg);}
body.nav-open .nav-toggle span::after{transform:translateY(-5px) rotate(-45deg);}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec-gap) 0;}
.section-tight{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-head p{margin-top:10px;color:var(--muted);font-size:15px;max-width:640px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase;
  color:var(--brand-dark);margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand);border-radius:2px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1;
  padding:6px 11px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-dark);border:1px solid rgba(23,210,160,.22);
}
.badge-accent{background:rgba(255,122,60,.10);color:#C24F18;border-color:rgba(255,122,60,.28);}
.badge-muted{background:#EEF1ED;color:var(--muted);border-color:var(--line);}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 分类页首屏 ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  background:#101418;
  color:#fff;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.34;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(16,20,24,.94) 0%,rgba(16,20,24,.78) 52%,rgba(16,20,24,.52) 100%);
}
.cat-hero .container{position:relative;z-index:2;padding-top:72px;padding-bottom:72px;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px;}
.crumbs a{color:rgba(255,255,255,.82);}
.crumbs a:hover{color:#fff;}
.crumbs span.sep{opacity:.5;}
.cat-hero h1{color:#fff;max-width:820px;font-size:36px;}
.cat-hero .lead{
  margin-top:18px;max-width:660px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.80);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.hero-points span{
  font-size:13px;color:rgba(255,255,255,.86);
  border:1px solid rgba(255,255,255,.20);border-radius:999px;
  padding:7px 14px;background:rgba(255,255,255,.06);
}
.hero-figure{
  margin-top:40px;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid rgba(255,255,255,.12);max-width:880px;
}
.hero-figure img{width:100%;aspect-ratio:16/7;object-fit:cover;}

/* ---------- 导语卡 ---------- */
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:start;}
.intro-text{font-size:17px;line-height:1.95;color:var(--ink-2);}
.intro-text p+p{margin-top:1em;}
.intro-aside{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 26px 22px;box-shadow:var(--shadow-card);
}
.intro-aside h3{font-size:17px;margin-bottom:16px;}
.checklist li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink-2);line-height:1.75;
}
.checklist li:last-child{border-bottom:0;padding-bottom:0;}
.checklist .num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;color:var(--brand-dark);
  background:var(--brand-soft);border-radius:8px;padding:3px 8px;height:26px;flex-shrink:0;
}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:8px;padding-left:56px;}
.timeline::before{
  content:"";position:absolute;left:19px;top:14px;bottom:26px;width:2px;
  background:linear-gradient(180deg,var(--brand) 0%,rgba(23,210,160,.30) 70%,rgba(23,210,160,.06) 100%);
  border-radius:2px;
}
.tl-item{position:relative;padding-bottom:24px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-45px;top:26px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);box-sizing:content-box;
}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 26px;box-shadow:var(--shadow-card);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.tl-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:var(--brand-line);}
.tl-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.tl-step{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:24px;font-weight:800;color:var(--brand);letter-spacing:-.5px;
}
.tl-card h3{flex:1 1 240px;}
.tl-card p{margin-top:12px;color:var(--muted);font-size:15.5px;line-height:1.85;}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}

/* ---------- 设备卡 ---------- */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.device-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
  display:flex;flex-direction:column;
}
.device-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:var(--brand-line);}
.device-card .cover{position:relative;background:var(--brand-soft);}
.device-card .cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.device-card .body{padding:22px 22px 26px;}
.device-card h3{margin:6px 0 10px;font-size:18px;}
.device-card p{color:var(--muted);font-size:15px;line-height:1.85;}
.device-card .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}

/* ---------- 排查列表 ---------- */
.trouble-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.trouble-list li{
  display:flex;gap:18px;align-items:flex-start;
  padding:22px 26px;border-bottom:1px solid var(--line);
  transition:background var(--ease),padding-left var(--ease);
}
.trouble-list li:last-child{border-bottom:0;}
.trouble-list li:hover{background:#F0F3EE;padding-left:30px;}
.trouble-list .idx{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;color:var(--muted);
  min-width:34px;padding-top:4px;
}
.trouble-list h3{font-size:17px;margin-bottom:8px;}
.trouble-list p{color:var(--muted);font-size:15px;line-height:1.85;}
.trouble-list .fix{
  display:inline-flex;align-items:center;gap:6px;margin-top:12px;
  font-size:13px;font-weight:600;color:var(--brand-dark);
}
.trouble-list .fix::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);
}

/* ---------- FAQ ---------- */
.faq-list{max-width:920px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--ink-2);
  transition:color var(--ease),padding-left var(--ease);
}
.faq-q:hover{color:var(--brand-dark);padding-left:8px;}
.faq-q .qn{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:14px;font-weight:700;color:var(--brand-dark);min-width:28px;
}
.faq-q .arrow{
  margin-left:auto;width:20px;height:20px;flex-shrink:0;color:var(--muted);
  transition:transform var(--ease),color var(--ease);
}
.faq-item.is-open .faq-q .arrow{transform:rotate(180deg);color:var(--brand-dark);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a p{
  padding:0 4px 24px 48px;color:var(--muted);font-size:15.5px;line-height:1.9;
}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;background:#101418;color:#fff;
  border-radius:20px;padding:56px 48px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;opacity:.22;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(16,20,24,.96) 0%,rgba(16,20,24,.72) 100%);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;max-width:560px;}
.cta-inner p{margin-top:14px;color:rgba(255,255,255,.76);font-size:16px;max-width:560px;line-height:1.85;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:#101418;color:#B9C0C8;padding:64px 0 0;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-logo{color:#fff;font-size:18px;font-weight:800;letter-spacing:-.2px;}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.85;color:#9AA3AC;max-width:340px;}
.footer-col h4{font-size:14px;color:var(--brand);margin-bottom:16px;font-weight:700;letter-spacing:.4px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:#B9C0C8;}
.footer-col a:hover{color:#fff;text-decoration:none;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.10);padding:22px 0 28px;
  font-size:12px;color:#7E8791;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-links{gap:16px;}
  .nav-links a{font-size:14px;}
  .search{width:180px;}
}
@media (max-width:1023px){
  :root{--sec-gap:64px;}
  h1{font-size:30px;}
  .cat-hero h1{font-size:30px;}
  h2{font-size:22px;}
  .intro-grid{grid-template-columns:1fr;gap:28px;}
  .device-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .search{width:170px;}
  body.nav-open .nav-links{
    display:flex;flex-direction:column;align-items:flex-start;gap:0;
    position:fixed;left:0;right:0;top:64px;bottom:0;
    background:#fff;padding:20px 24px 40px;overflow-y:auto;
    border-top:1px solid var(--line);z-index:70;
  }
  body.nav-open .nav-links a{
    width:100%;padding:16px 0;font-size:16px;border-bottom:1px solid var(--line);
  }
  body.nav-open .nav-links a.is-active::after{display:none;}
  body.nav-open .nav-links a.is-active{color:var(--brand-dark);font-weight:700;}
  .cta-band{padding:44px 32px;}
}
@media (max-width:767px){
  :root{--sec-gap:56px;}
  body{font-size:16px;}
  .container{padding:0 16px;}
  h1{font-size:28px;}
  .cat-hero h1{font-size:27px;}
  h2{font-size:21px;}
  h3{font-size:17px;}
  .search{display:none;}
  .cat-hero .container{padding-top:52px;padding-bottom:56px;}
  .cat-hero .lead{font-size:16px;}
  .hero-figure img{aspect-ratio:16/10;}
  .device-grid{grid-template-columns:1fr;}
  .timeline{padding-left:40px;}
  .timeline::before{left:13px;}
  .tl-item::before{left:-34px;top:24px;width:11px;height:11px;}
  .tl-card{padding:20px 18px;}
  .trouble-list li{padding:18px 18px;gap:12px;}
  .trouble-list li:hover{padding-left:22px;}
  .faq-q{font-size:16px;padding:18px 2px;gap:12px;}
  .faq-a p{padding:0 2px 20px 40px;}
  .cta-band{padding:36px 22px;border-radius:16px;}
  .cta-inner{gap:24px;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .site-footer{margin-top:56px;padding-top:48px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:520px){
  .hero-points span{font-size:12px;padding:6px 11px;}
  .tl-step{font-size:20px;}
}

/* roulang page: category3 */
:root{
  --brand:#17D2A0;
  --brand-dark:#0FA37D;
  --brand-deep:#0B8A6A;
  --brand-ink:#08251C;
  --ink:#101418;
  --text:#1B2026;
  --muted:#5A6470;
  --bg:#F6F7F4;
  --surface:#FFFFFF;
  --surface-alt:#F0F3EE;
  --line:#E6E9E4;
  --line-strong:#D8DCD5;
  --accent:#FF7A3C;
  --danger:#D94A3D;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-1:0 1px 2px rgba(16,20,24,.06);
  --shadow-2:0 8px 24px rgba(16,20,24,.10);
  --maxw:1200px;
  --section-gap:88px;
  --gutter:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-dark);text-decoration:none;}
a:hover{text-decoration:underline;text-underline-offset:3px;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;padding:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.4;letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,247,244,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:background .22s ease,box-shadow .22s ease;
}
.site-header.is-condensed{background:rgba(246,247,244,.99);box-shadow:0 6px 20px rgba(16,20,24,.08);}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px;transition:height .22s ease;}
.site-header.is-condensed .nav-inner{height:52px;}
.logo{display:flex;flex-direction:column;line-height:1.15;flex-shrink:0;}
.logo-main{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.02em;}
.logo-sub{font-size:11px;letter-spacing:.5px;color:var(--muted);margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-links a{
  font-size:15px;color:var(--text);padding:8px 10px;border-radius:6px;
  border-bottom:2px solid transparent;white-space:nowrap;
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.nav-links a:hover{color:var(--brand-deep);background:rgba(23,210,160,.08);text-decoration:none;}
.nav-links a.is-active{color:var(--ink);font-weight:600;border-bottom-color:var(--brand);background:transparent;}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search{
  display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;width:220px;
  background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius-btn);
  transition:width .22s ease,border-color .18s ease,box-shadow .18s ease;
}
.search svg{width:16px;height:16px;color:var(--muted);flex-shrink:0;}
.search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;}
.search input::placeholder{color:#9AA3AC;}
.search:focus-within{width:280px;border-color:var(--brand);box-shadow:0 0 0 4px rgba(23,210,160,.16);}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line-strong);border-radius:10px;
  background:var(--surface);position:relative;flex-shrink:0;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:16px;height:2px;background:var(--ink);border-radius:2px;
  transform:translateX(-50%);transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";left:0;transform:none;top:-6px;}
.nav-toggle span::after{content:"";left:0;transform:none;top:6px;}
.nav-toggle.is-open span{transform:translateX(-50%) rotate(45deg);}
.nav-toggle.is-open span::before{transform:rotate(-90deg);top:0;}
.nav-toggle.is-open span::after{opacity:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-2px);}
.btn-primary{background:var(--brand);color:var(--brand-ink);}
.btn-primary:hover{background:#14BD90;box-shadow:0 8px 20px rgba(23,210,160,.32);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand-deep);}
.btn-ghost:hover{background:rgba(23,210,160,.1);}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:#EAF6F1;}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.4);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-pill{border-radius:999px;}
.btn:disabled,.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand-deep);}
.breadcrumb span[aria-current]{color:var(--text);font-weight:600;}
.breadcrumb i{color:#B6BDC4;font-style:normal;}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;padding:48px 0 68px;background:var(--surface);
  border-bottom:1px solid var(--line);overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(16,20,24,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(16,20,24,.045) 1px,transparent 1px);
  background-size:88px 88px;pointer-events:none;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.75),rgba(0,0,0,0));
}
.cat-hero .container{position:relative;z-index:1;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand-deep);background:rgba(23,210,160,.12);
  padding:5px 12px;border-radius:999px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);}
h1{font-size:36px;line-height:1.35;letter-spacing:-.01em;}
.hero-sub{margin-top:16px;font-size:17px;color:var(--muted);max-width:34em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-points{margin-top:30px;display:grid;gap:10px;}
.hero-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--muted);}
.hero-points li::before{
  content:"";flex-shrink:0;width:6px;height:6px;margin-top:11px;border-radius:2px;background:var(--brand);
}
.hero-media{position:relative;border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-2);}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,20,24,0) 45%,rgba(16,20,24,.28));
}
.hero-media figcaption{
  position:absolute;left:16px;bottom:14px;z-index:2;color:#fff;font-size:12px;
  letter-spacing:.4px;text-shadow:0 1px 6px rgba(0,0,0,.4);
}

/* ---------- 板块通用 ---------- */
.section{padding:var(--section-gap) 0;}
.section--alt{background:var(--surface-alt);}
.section--dark{background:var(--ink);color:#C9D1D8;}
.section--dark h2,.section--dark h3{color:#fff;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-head h2{font-size:26px;}
.section-head .head-note{margin-top:10px;font-size:15px;color:var(--muted);max-width:52em;}
.section-head .head-link{font-size:14px;font-weight:600;color:var(--brand-deep);white-space:nowrap;}
.section-head .head-link:hover{text-decoration:underline;text-underline-offset:4px;}

/* ---------- 筛选标签 ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 16px;border-radius:999px;border:1px solid var(--line-strong);
  background:var(--surface);font-size:14px;color:var(--muted);
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.chip:hover{border-color:var(--brand);color:var(--brand-deep);text-decoration:none;}
.chip.is-active{background:rgba(23,210,160,.14);border-color:var(--brand);color:var(--brand-deep);font-weight:600;}
.chip .chip-count{font-size:12px;font-variant-numeric:tabular-nums;color:#96A0A8;}

/* ---------- 图文卡 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.case-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.case-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--brand);}
.case-card:hover h3{color:var(--brand-deep);}
.case-media{position:relative;background:rgba(23,210,160,.06);}
.case-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.case-body{padding:24px 24px 26px;}
.case-body h3{font-size:19px;margin-top:12px;transition:color .2s ease;}
.case-body>p{margin-top:10px;font-size:15px;color:var(--muted);}
.badge{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.3px;
  padding:3px 10px;border-radius:999px;background:rgba(23,210,160,.14);color:var(--brand-deep);
}
.badge.badge-warn{background:rgba(255,122,60,.15);color:#C4501B;}
.badge.badge-quiet{background:var(--surface-alt);color:var(--muted);}
.check-list{margin-top:16px;display:grid;gap:8px;}
.check-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text);line-height:1.7;}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:2px;
  border:1.5px solid var(--brand);background:rgba(23,210,160,.18);
}

/* ---------- 处理顺序 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.step{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px 22px;box-shadow:var(--shadow-1);
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.step:hover{border-color:var(--brand);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.step-num{
  font-size:30px;font-weight:800;color:rgba(16,20,24,.10);font-variant-numeric:tabular-nums;
  line-height:1;letter-spacing:.02em;
}
.step h3{font-size:17px;margin-top:12px;}
.step p{margin-top:8px;font-size:14.5px;color:var(--muted);}
.step-tag{
  position:absolute;top:22px;right:20px;font-size:12px;color:var(--brand-deep);
  background:rgba(23,210,160,.12);border-radius:999px;padding:2px 10px;font-weight:600;
}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:12px;padding:18px 20px;
}
.notice strong{display:block;font-size:15px;color:var(--ink);}
.notice p{margin-top:4px;font-size:14px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{border-color:var(--line-strong);box-shadow:var(--shadow-1);}
.faq-item.is-open{border-color:var(--brand);box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  padding:18px 22px;font-size:16.5px;font-weight:600;color:var(--ink);
}
.faq-num{
  font-variant-numeric:tabular-nums;font-size:14px;font-weight:700;color:var(--brand-dark);
  flex-shrink:0;
}
.faq-q .q-text{flex:1;}
.faq-arrow{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;border:1px solid var(--line-strong);
  display:inline-flex;align-items:center;justify-content:center;color:var(--muted);
  transition:transform .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);background:var(--brand);border-color:var(--brand);color:var(--brand-ink);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-item.is-open .faq-a{max-height:460px;}
.faq-a-inner{padding:0 22px 22px 60px;border-top:1px solid var(--line);margin-top:0;padding-top:16px;}
.faq-a-inner p{font-size:15.5px;color:var(--muted);line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);border-radius:20px;padding:48px;color:#C9D1D8;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  border:1px solid rgba(255,255,255,.08);
}
.cta-band h2{font-size:26px;color:#fff;}
.cta-band p{margin-top:12px;font-size:15px;max-width:46em;color:#B9C0C8;}
.cta-actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap;}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.form-aside h2{font-size:26px;}
.form-aside p{margin-top:14px;font-size:15px;color:var(--muted);}
.form-aside ul{margin-top:22px;display:grid;gap:12px;}
.form-aside li{position:relative;padding-left:20px;font-size:15px;color:var(--text);}
.form-aside li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:2px;
  background:rgba(23,210,160,.25);border:1.5px solid var(--brand);
}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px;box-shadow:var(--shadow-1);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;color:var(--muted);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;font-size:15px;
  background:#fff;border:1px solid var(--line-strong);border-radius:var(--radius-btn);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:0;border-color:var(--brand);box-shadow:0 0 0 4px rgba(23,210,160,.14);
}
.form-hint{margin-top:14px;font-size:13px;color:var(--muted);}
.form-note{margin-top:10px;font-size:13px;color:var(--danger);display:none;}
.form-note.is-show{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#B9C0C8;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-logo{font-size:18px;font-weight:800;color:#fff;letter-spacing:.02em;}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.85;color:#9FA8B1;max-width:30em;}
.footer-col h4{font-size:14px;color:var(--brand);margin-bottom:16px;letter-spacing:.4px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:#B9C0C8;transition:color .18s ease;}
.footer-col a:hover{color:#fff;text-decoration:none;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:12px;color:#8C959E;flex-wrap:wrap;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-links a{font-size:14px;padding:8px 7px;}
  .search{width:170px;}
  .hero-grid{gap:40px;}
  h1{font-size:32px;}
  .cta-band{padding:40px;}
}
@media (max-width:1119px){
  .search{display:none;}
}
@media (max-width:1023px){
  :root{--section-gap:64px;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-links{
    position:fixed;left:0;right:0;top:60px;bottom:0;z-index:55;
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    background:var(--surface);padding:12px 20px 40px;
    transform:translateY(-14px);opacity:0;pointer-events:none;overflow-y:auto;
    transition:opacity .24s ease,transform .24s ease;
    box-shadow:0 18px 40px rgba(16,20,24,.14);
  }
  .nav-links.is-open{transform:none;opacity:1;pointer-events:auto;}
  .nav-links a{padding:15px 4px;border-bottom:1px solid var(--line);font-size:16px;border-radius:0;}
  .nav-links a.is-active{border-bottom-color:var(--line);color:var(--brand-deep);}
  .nav-links a.is-active::after{content:"当前";float:right;font-size:12px;color:var(--brand-deep);font-weight:500;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-media img{aspect-ratio:16/9;max-height:320px;}
  .case-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .form-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
}
@media (max-width:767px){
  :root{--section-gap:56px;--gutter:16px;}
  body{font-size:16px;}
  .nav-inner{height:60px;}
  .site-header.is-condensed .nav-inner{height:54px;}
  .nav-links{top:60px;}
  h1{font-size:28px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-head h2{font-size:22px;}
  .cat-hero{padding:32px 0 48px;}
  .hero-actions .btn{width:100%;}
  .steps{grid-template-columns:1fr;}
  .step-tag{position:static;display:inline-block;margin-bottom:10px;}
  .case-body{padding:20px;}
  .cta-band h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .form-card{padding:22px;}
  .faq-q{padding:16px;font-size:15.5px;}
  .faq-a-inner{padding:14px 16px 18px;}
}
@media (max-width:520px){
  .chip{padding:7px 12px;font-size:13px;}
  .hero-points li{font-size:14px;}
  .cta-actions{flex-direction:column;}
}

/* roulang page: category4 */
:root{
  --brand:#17D2A0;
  --brand-dark:#0FA37D;
  --brand-soft:rgba(23,210,160,.10);
  --brand-soft-2:rgba(23,210,160,.06);
  --ink:#101418;
  --text:#1B2026;
  --muted:#5A6470;
  --line:#E6E9E4;
  --line-strong:#D8DCD5;
  --bg:#F6F7F4;
  --surface:#FFFFFF;
  --accent:#FF7A3C;
  --danger:#D94A3D;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --radius-pill:999px;
  --shadow-card:0 1px 2px rgba(16,20,24,.06);
  --shadow-hover:0 8px 24px rgba(16,20,24,.10);
  --ease:.22s ease;
  --space-section:88px;
  --space-section-m:56px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-dark);text-decoration:none;transition:color var(--ease),text-underline-offset var(--ease);}
a:hover{color:#0B7C60;text-decoration:underline;text-underline-offset:3px;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.4;letter-spacing:.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,247,244,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--line);
  box-shadow:0 6px 18px rgba(16,20,24,.06);
}
.nav-inner{
  display:flex;align-items:center;gap:28px;
  height:64px;
  transition:height var(--ease);
}
.site-header.is-scrolled .nav-inner{height:52px;}
.logo{display:flex;flex-direction:column;gap:1px;flex:0 0 auto;text-decoration:none;}
.logo:hover{text-decoration:none;}
.logo-main{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.4px;line-height:1.25;}
.logo-sub{font-size:11px;letter-spacing:.5px;color:var(--muted);line-height:1.2;}
.nav-links{display:flex;align-items:center;gap:22px;margin-right:auto;}
.nav-links a{
  position:relative;
  font-size:15px;color:#2E3540;
  padding:6px 0;
  transition:color var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-links a:hover{color:var(--ink);text-decoration:none;}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.search{
  display:flex;align-items:center;gap:8px;
  width:220px;height:38px;padding:0 12px;
  background:var(--surface);
  border:1px solid var(--line-strong);border-radius:var(--radius-pill);
  transition:width var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.search svg{width:16px;height:16px;color:var(--muted);flex:0 0 auto;}
.search input{width:100%;border:0;outline:none;background:transparent;font-size:14px;}
.search input::placeholder{color:#98A0AA;}
.search:focus-within{width:280px;border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  padding:11px 20px;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  text-decoration:none;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand);color:#08221A;border:1px solid var(--brand);}
.btn-primary:hover{background:#12BC8E;color:#08221A;transform:translateY(-2px);box-shadow:0 8px 20px rgba(23,210,160,.28);}
.btn-ghost{background:transparent;color:var(--brand-dark);border:1px solid var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);}
.btn-light{background:#FFFFFF;color:var(--ink);border:1px solid rgba(255,255,255,.5);}
.btn-light:hover{background:#EAF6F1;color:var(--ink);transform:translateY(-2px);}
.btn-sm{padding:9px 16px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;}
.link-arrow span{transition:transform var(--ease);}
.link-arrow:hover span{transform:translateX(4px);}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line-strong);border-radius:var(--radius-btn);align-items:center;justify-content:center;}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--ease);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- breadcrumb / hero ---------- */
main{display:block;}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
  padding:22px 0 0;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand-dark);}
.crumb .sep{color:#B7BEC6;}

.cat-hero{padding:26px 0 0;}
.cat-hero-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;
  padding:24px 0 8px;
}
.cat-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.tag{
  display:inline-block;font-size:12px;line-height:1;padding:7px 12px;border-radius:var(--radius-pill);
  background:var(--brand-soft);color:#0B7C60;font-weight:600;letter-spacing:.3px;
}
.tag-outline{background:transparent;border:1px solid var(--line-strong);color:var(--muted);}
.cat-hero h1{font-size:36px;font-weight:800;line-height:1.38;letter-spacing:.3px;}
.cat-hero .lead{margin-top:16px;font-size:17px;color:var(--muted);line-height:1.9;max-width:640px;}
.cat-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.cat-hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:24px;font-size:14px;color:var(--muted);}
.cat-hero-points li{display:flex;align-items:center;gap:8px;}
.cat-hero-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);flex:0 0 auto;}
.hero-visual{position:relative;border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-hover);}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,20,24,0) 40%,rgba(16,20,24,.42) 100%);
}
.hero-visual figcaption{
  position:absolute;left:18px;bottom:16px;z-index:2;
  color:#fff;font-size:13px;letter-spacing:.3px;
}

/* ---------- sections ---------- */
.section{padding:var(--space-section) 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px;}
.section-head h2{font-size:26px;font-weight:800;line-height:1.4;}
.section-head p{margin-top:10px;font-size:15px;color:var(--muted);max-width:720px;}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:2px;color:var(--brand-dark);
  text-transform:uppercase;margin-bottom:10px;
}

/* ---------- numbered list + side panel ---------- */
.split{display:grid;grid-template-columns:8fr 4fr;gap:40px;align-items:start;}
.num-list{border-top:1px solid var(--line);}
.num-item{
  display:grid;grid-template-columns:78px 1fr;gap:20px;
  padding:28px 0;border-bottom:1px solid var(--line);
  transition:background var(--ease),padding var(--ease);
}
.num-item:hover{background:#FBFCFA;}
.num-index{
  font-variant-numeric:tabular-nums;
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  font-size:34px;font-weight:700;color:var(--brand);line-height:1;padding-top:2px;
}
.num-item h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.num-item p{font-size:16px;color:var(--muted);line-height:1.9;}
.num-item ul{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.num-item ul li{position:relative;padding-left:18px;font-size:15px;color:#39424D;}
.num-item ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--brand);}

.side-panel{position:sticky;top:86px;display:flex;flex-direction:column;gap:20px;}
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
}
.panel h3{font-size:16px;margin-bottom:14px;}
.checklist{display:flex;flex-direction:column;gap:12px;}
.checklist li{display:flex;gap:10px;font-size:14.5px;color:#39424D;line-height:1.75;}
.checklist li::before{
  content:"✓";flex:0 0 auto;width:20px;height:20px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:12px;display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.panel.dark{background:var(--ink);border-color:rgba(255,255,255,.08);}
.panel.dark h3{color:#fff;}
.panel.dark p{color:#B9C0C8;font-size:14.5px;}
.panel.dark .panel-note{margin-top:14px;font-size:13px;color:#8C949D;}
.panel-cta{margin-top:16px;width:100%;}

/* ---------- cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.card:hover{border-color:var(--brand);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.card:hover h3{color:var(--brand-dark);}
.card-cover{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft-2);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-cover img{transform:scale(1.04);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:18px;line-height:1.5;transition:color var(--ease);}
.card-body p{font-size:15px;color:var(--muted);line-height:1.85;}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:#8C949D;font-variant-numeric:tabular-nums;}

/* ---------- metrics ---------- */
.metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.metric{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-card);
}
.metric strong{
  display:block;font-size:44px;font-weight:800;color:var(--ink);line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-.5px;
}
.metric strong em{font-style:normal;font-size:16px;font-weight:600;color:var(--muted);margin-left:6px;}
.metric span{display:block;margin-top:10px;font-size:13.5px;color:var(--muted);padding-bottom:14px;border-bottom:1px solid var(--line);}
.metric small{display:block;margin-top:12px;font-size:13px;color:#8C949D;}

/* ---------- compare bars ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-col{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-card);}
.compare-col h3{font-size:17px;margin-bottom:18px;display:flex;align-items:center;gap:10px;}
.compare-col h3 .dot{width:10px;height:10px;border-radius:50%;background:var(--brand);}
.compare-col.muted h3 .dot{background:#C6CCD3;}
.bar-item{margin-bottom:18px;}
.bar-item:last-child{margin-bottom:0;}
.bar-top{display:flex;justify-content:space-between;font-size:14px;color:#39424D;margin-bottom:8px;}
.bar-top b{font-variant-numeric:tabular-nums;color:var(--ink);}
.bar-track{height:8px;background:#EDF0EB;border-radius:var(--radius-pill);overflow:hidden;}
.bar-fill{height:100%;background:var(--brand);border-radius:var(--radius-pill);}
.bar-fill.grey{background:#C6CCD3;}

/* ---------- faq ---------- */
.faq-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--ink);
  transition:background var(--ease);
}
.faq-q:hover{background:#F7F9F5;}
.faq-num{
  font-variant-numeric:tabular-nums;font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  font-size:14px;color:var(--brand-dark);flex:0 0 auto;font-weight:700;
}
.faq-q .chev{margin-left:auto;flex:0 0 auto;width:18px;height:18px;transition:transform var(--ease);color:var(--muted);}
.faq-item.is-open .faq-q .chev{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 24px 22px 62px;font-size:15.5px;color:var(--muted);line-height:1.9;}

/* ---------- cta ---------- */
.cta-band{
  margin-top:var(--space-section);
  background:var(--ink);color:#fff;border-radius:22px;overflow:hidden;position:relative;
  padding:52px 48px;
  display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;right:-40px;top:-40px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,210,160,.22),rgba(23,210,160,0) 70%);
}
.cta-band h2{color:#fff;font-size:25px;line-height:1.45;position:relative;}
.cta-band p{color:#B9C0C8;font-size:15.5px;margin-top:12px;max-width:640px;position:relative;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;}

/* ---------- footer ---------- */
.site-footer{margin-top:var(--space-section);background:var(--ink);color:#B9C0C8;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-logo{color:#fff;font-size:18px;font-weight:800;letter-spacing:.4px;margin-bottom:14px;}
.footer-desc{font-size:14px;line-height:1.9;color:#98A0AA;max-width:360px;}
.footer-col h4{font-size:14px;color:var(--brand);margin-bottom:16px;letter-spacing:.5px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:#B9C0C8;}
.footer-col a:hover{color:#fff;text-decoration:none;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#8C949D;
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .cat-hero h1{font-size:32px;}
  .split{grid-template-columns:7fr 5fr;gap:28px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .search{width:180px;}
  .search:focus-within{width:200px;}
  .cat-hero-grid{grid-template-columns:1fr;gap:28px;}
  .cat-hero h1{font-size:30px;}
  .cat-hero .lead{max-width:none;}
  .hero-visual img{aspect-ratio:16/9;max-height:320px;}
  .split{grid-template-columns:1fr;}
  .side-panel{position:static;flex-direction:row;flex-wrap:wrap;}
  .side-panel .panel{flex:1 1 300px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .metric-row{grid-template-columns:repeat(2,1fr);}
  .compare{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .section{padding:var(--space-section-m) 0 0;}
  .site-header .nav-inner{height:58px;gap:14px;}
  .site-header.is-scrolled .nav-inner{height:52px;}
  .nav-toggle{display:flex;}
  .nav-right .search{display:none;}
  .nav-right .btn-sm{display:none;}
  .nav-links{
    display:flex;flex-direction:column;gap:0;align-items:stretch;
    position:fixed;left:0;right:0;top:58px;bottom:0;
    background:#FFFFFF;padding:18px 20px 40px;
    transform:translateX(102%);transition:transform var(--ease);
    border-top:1px solid var(--line);overflow-y:auto;margin-right:0;
  }
  body.nav-open .nav-links{transform:translateX(0);}
  .nav-links a{padding:15px 0;font-size:16px;border-bottom:1px solid var(--line);}
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--brand-dark);}
  .cat-hero h1{font-size:26px;}
  .cat-hero .lead{font-size:15.5px;}
  .cat-hero-actions .btn{width:100%;}
  .section-head h2{font-size:22px;}
  .num-item{grid-template-columns:52px 1fr;gap:14px;padding:22px 0;}
  .num-index{font-size:26px;}
  .card-grid{grid-template-columns:1fr;}
  .metric-row{grid-template-columns:repeat(2,1fr);gap:14px;}
  .metric{padding:20px;}
  .metric strong{font-size:34px;}
  .side-panel{flex-direction:column;}
  .faq-q{padding:17px 18px;font-size:15.5px;gap:12px;}
  .faq-a-inner{padding:0 18px 20px 46px;}
  .cta-band{padding:32px 22px;border-radius:18px;}
  .cta-band h2{font-size:21px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .site-footer{padding-top:44px;}
}
@media (max-width:520px){
  .metric-row{grid-template-columns:1fr;}
  .cat-hero-points{flex-direction:column;gap:8px;}
}

/* roulang page: category5 */
:root{
  --brand:#17D2A0;
  --brand-dark:#0FA37D;
  --brand-soft:rgba(23,210,160,.10);
  --brand-soft-2:rgba(23,210,160,.06);
  --ink:#101418;
  --ink-2:#1B2026;
  --text:#1B2026;
  --text-2:#5A6470;
  --text-3:#7C858F;
  --bg:#F6F7F4;
  --surface:#FFFFFF;
  --line:#E6E9E4;
  --line-strong:#D8DCD5;
  --warn:#FF7A3C;
  --danger:#D94A3D;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,20,24,.06);
  --shadow-2:0 8px 24px rgba(16,20,24,.10);
  --container:1200px;
  --section-y:88px;
  --t:.22s ease;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--brand-dark);text-decoration:none;transition:color var(--t),text-underline-offset var(--t);}
a:hover{text-decoration:underline;text-underline-offset:3px;}
button,input,select,textarea{font:inherit;color:inherit;}
button{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);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  padding:12px 22px;
  font-size:15px;font-weight:600;line-height:1.4;
  text-decoration:none;border:1px solid transparent;
  transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand);color:#062A21;box-shadow:0 1px 2px rgba(16,20,24,.08);}
.btn-primary:hover{background:#12BE90;transform:translateY(-1px);box-shadow:0 8px 20px rgba(23,210,160,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand-dark);}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px);}
.btn-pill{border-radius:var(--radius-pill);padding:14px 28px;}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-light{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.28);color:#fff;}
.btn-light:hover{background:rgba(255,255,255,.18);}
.link-arrow{display:inline-flex;align-items:center;gap:4px;font-weight:600;font-size:15px;}
.link-arrow::after{content:"→";transition:transform var(--t);}
.link-arrow:hover::after{transform:translateX(4px);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:height var(--t),background-color var(--t),box-shadow var(--t);
}
.nav-inner{
  display:flex;align-items:center;gap:22px;
  height:64px;
  transition:height var(--t);
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(16,20,24,.06);}
.site-header.is-scrolled .nav-inner{height:52px;}
.logo{display:flex;flex-direction:column;justify-content:center;line-height:1.15;flex:0 0 auto;}
.logo:hover{text-decoration:none;}
.logo-main{font-size:17px;font-weight:800;letter-spacing:.2px;color:var(--ink);}
.logo-sub{font-size:11px;letter-spacing:.5px;color:var(--text-3);font-weight:500;margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-links a{
  display:inline-block;
  padding:8px 10px;
  font-size:14.5px;font-weight:500;color:var(--ink-2);
  border-bottom:2px solid transparent;
  transition:color var(--t),border-color var(--t),background-color var(--t);
  border-radius:6px 6px 0 0;
}
.nav-links a:hover{color:var(--brand-dark);background:var(--brand-soft-2);text-decoration:none;}
.nav-links a.is-active{color:var(--ink);font-weight:700;border-bottom-color:var(--brand);}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.search{
  display:flex;align-items:center;gap:8px;
  width:210px;height:38px;padding:0 12px;
  border:1px solid var(--line-strong);border-radius:var(--radius-pill);
  background:#fff;
  transition:width var(--t),border-color var(--t),box-shadow var(--t);
}
.search svg{width:16px;height:16px;color:var(--text-3);flex:0 0 auto;}
.search input{border:0;background:none;width:100%;font-size:13.5px;outline:none;}
.search input::placeholder{color:#9AA3AC;}
.search:focus-within{width:280px;border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft);}
.nav-toggle{
  display:none;width:38px;height:38px;border-radius:8px;
  position:relative;border:1px solid var(--line-strong);background:#fff;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:16px;height:2px;background:var(--ink);
  transform:translateX(-50%);border-radius:2px;transition:transform var(--t),opacity var(--t);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-5px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:5px;left:0;transform:none;}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);flex-wrap:wrap;}
.crumb a{color:var(--text-2);}
.crumb .sep{color:#C3C9C1;}

/* ---------- Hero ---------- */
.page-hero{
  background:
    radial-gradient(circle at 88% 12%, rgba(23,210,160,.13), transparent 46%),
    #fff;
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;
  align-items:center;
}
.hero-copy .crumb{margin-bottom:20px;}
.hero-copy h1{
  font-size:36px;line-height:1.4;font-weight:800;letter-spacing:-.3px;
  color:var(--ink);
  margin:14px 0 0;
}
.hero-copy h1 .hl{
  color:var(--brand-dark);
  background:linear-gradient(to top,var(--brand-soft) 42%,transparent 42%);
  padding:0 2px;
}
.hero-lead{
  margin-top:18px;font-size:16.5px;line-height:1.9;color:var(--text-2);max-width:560px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:var(--radius-pill);
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:12px;font-weight:700;letter-spacing:.4px;
}
.hero-points{margin-top:26px;display:grid;gap:12px;}
.hero-points li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;color:var(--text-2);
}
.hero-points li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;margin-top:11px;
  border-radius:50%;background:var(--brand);
}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-img);
  box-shadow:var(--shadow-2);
}
.hero-visual .visual-badge{
  position:absolute;left:18px;bottom:18px;
  background:rgba(16,20,24,.78);color:#fff;
  border-radius:var(--radius-pill);
  padding:8px 16px;font-size:12.5px;letter-spacing:.4px;
  backdrop-filter:blur(4px);
}

/* ---------- 板块通用 ---------- */
.section{padding:var(--section-y) 0;}
.section--tight{padding:64px 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:26px;font-weight:800;line-height:1.4;color:var(--ink);letter-spacing:-.2px;
}
.section-head p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px;}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:1.4px;
  color:var(--brand-dark);text-transform:uppercase;margin-bottom:10px;
}

/* ---------- 对比条 ---------- */
.compare{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-1);
}
.compare-legend{display:flex;gap:22px;font-size:13px;color:var(--text-2);margin-bottom:26px;flex-wrap:wrap;}
.legend-item{display:inline-flex;align-items:center;gap:8px;}
.legend-dot{width:10px;height:10px;border-radius:3px;background:var(--brand);}
.legend-dot.neutral{background:#C9D0C8;}
.compare-row{
  display:grid;grid-template-columns:minmax(0,180px) minmax(0,1fr) auto;
  gap:22px;align-items:center;
  padding:20px 0;border-bottom:1px solid var(--line);
}
.compare-row:last-child{border-bottom:0;padding-bottom:0;}
.compare-row:first-of-type{padding-top:0;}
.compare-label{font-size:15px;font-weight:600;color:var(--ink-2);}
.compare-bars{display:grid;gap:10px;}
.bar{position:relative;height:12px;border-radius:var(--radius-pill);background:#EEF1EC;overflow:hidden;}
.bar-fill{position:absolute;left:0;top:0;bottom:0;border-radius:var(--radius-pill);}
.bar-fill.is-brand{background:linear-gradient(90deg,#17D2A0,#0FA37D);}
.bar-fill.is-neutral{background:#C9D0C8;}
.bar-num{
  position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-size:11px;font-weight:700;color:#46504B;
  font-variant-numeric:tabular-nums;
}
.badge-diff{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  border:1px solid var(--warn);color:#C4531F;
  font-size:12px;font-weight:700;white-space:nowrap;background:#FFF4EE;
}

/* ---------- 步骤卡 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:28px 24px 26px;
  box-shadow:var(--shadow-1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
  overflow:hidden;
}
.step-card::after{
  content:attr(data-step);
  position:absolute;right:12px;top:-14px;
  font-size:76px;font-weight:800;line-height:1;
  color:rgba(16,20,24,.05);
  font-variant-numeric:tabular-nums;
  pointer-events:none;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand);}
.step-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:14px;font-weight:800;font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step-card h3{font-size:19px;font-weight:700;color:var(--ink);line-height:1.45;}
.step-card p{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--text-2);}

/* ---------- 数据看板 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
}
.metric{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-1);
}
.metric-num{
  font-size:44px;font-weight:800;line-height:1.1;color:var(--ink);
  font-variant-numeric:tabular-nums;letter-spacing:-1px;
}
.metric-num small{font-size:15px;font-weight:600;color:var(--text-2);margin-left:4px;letter-spacing:0;}
.metric-label{margin-top:8px;font-size:13.5px;color:var(--text-2);}
.metric-rule{margin-top:16px;height:1px;background:var(--line);}

/* ---------- 信息清单 ---------- */
.info-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-1);
}
.list-lines li{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 8px;border-bottom:1px solid var(--line);
  font-size:15.5px;color:var(--text-2);
  transition:background-color var(--t),padding-left var(--t);
}
.list-lines li:last-child{border-bottom:0;}
.list-lines li:hover{background:#F0F3EE;padding-left:12px;}
.list-lines strong{color:var(--ink-2);font-weight:700;}
.tick{
  flex:0 0 auto;width:20px;height:20px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand-dark);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:800;margin-top:6px;
}

/* ---------- 常见问题手风琴 ---------- */
.faq{display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color var(--t),box-shadow var(--t);
}
.faq-item.is-open{border-color:var(--brand);box-shadow:var(--shadow-2);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:20px 24px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink-2);
  transition:color var(--t),background-color var(--t);
}
.faq-q:hover{color:var(--brand-dark);background:#FAFBF9;}
.faq-q .num{
  font-variant-numeric:tabular-nums;font-weight:800;color:var(--brand-dark);
  font-size:14px;flex:0 0 auto;
}
.faq-q .chev{
  margin-left:auto;flex:0 0 auto;width:18px;height:18px;color:var(--text-3);
  transition:transform var(--t),color var(--t);
}
.faq-item.is-open .chev{transform:rotate(180deg);color:var(--brand-dark);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
  border-top:1px solid transparent;
}
.faq-item.is-open .faq-a{border-top-color:var(--line);}
.faq-a p{
  padding:18px 24px 22px 62px;
  font-size:15px;line-height:1.88;color:var(--text-2);
}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--ink);color:#fff;
  border-radius:18px;padding:52px 48px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.7;pointer-events:none;
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-band h2{font-size:26px;font-weight:800;line-height:1.4;color:#fff;}
.cta-band p{margin-top:12px;font-size:15px;color:#B9C0C8;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#B9C0C8;padding:64px 0 0;margin-top:var(--section-y);}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-logo{font-size:18px;font-weight:800;color:#fff;letter-spacing:.2px;}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.9;color:#9AA3AC;max-width:360px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--brand);margin-bottom:16px;letter-spacing:.3px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:#B9C0C8;}
.footer-col a:hover{color:#fff;text-decoration:none;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0 26px;font-size:12px;color:#7C858F;flex-wrap:wrap;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-links a{padding:8px 8px;font-size:14px;}
  .search{width:180px;}
}
@media (max-width:1023px){
  :root{--section-y:64px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-visual img{aspect-ratio:16/9;max-height:320px;}
  .hero-copy h1{font-size:30px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section-head{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .nav-inner{height:60px;gap:12px;}
  .site-header.is-scrolled .nav-inner{height:56px;}
  .logo-main{font-size:15px;}
  .logo-sub{font-size:10.5px;}
  .search{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-links{
    position:fixed;top:60px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;padding:20px 20px 40px;
    margin-left:0;overflow-y:auto;
    transform:translateX(-100%);
    transition:transform .26s ease;
    border-top:1px solid var(--line);
    z-index:90;
  }
  .site-header.nav-open .nav-links{transform:translateX(0);}
  .nav-links a{
    padding:14px 8px;font-size:16px;border-bottom:1px solid var(--line);
    border-radius:0;
  }
  .nav-links a.is-active{border-bottom-color:var(--brand);}
  .nav-links::after{
    content:"入口自查清单与问题提交说明可随时查阅";
    display:block;margin-top:22px;font-size:13px;color:var(--text-3);
  }
  .site-header.nav-open .nav-toggle span{background:transparent;}
  .site-header.nav-open .nav-toggle span::before{transform:rotate(45deg);top:0;}
  .site-header.nav-open .nav-toggle span::after{transform:rotate(-45deg);top:0;}
  .page-hero{padding:32px 0 44px;}
  .hero-copy h1{font-size:28px;}
  .hero-lead{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .section-head h2{font-size:22px;}
  .compare{padding:22px 18px;}
  .compare-row{grid-template-columns:1fr;gap:12px;}
  .compare-bars{width:100%;}
  .badge-diff{justify-self:start;}
  .steps{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr 1fr;gap:14px;}
  .metric{padding:20px 16px;}
  .metric-num{font-size:32px;}
  .info-panel{padding:22px 18px;}
  .faq-q{padding:16px;font-size:15.5px;gap:10px;}
  .faq-a p{padding:16px 16px 20px 44px;}
  .cta-band{padding:32px 22px;border-radius:14px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{margin-top:56px;padding-top:44px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:520px){
  .metrics{grid-template-columns:1fr;}
  .hero-visual .visual-badge{left:12px;bottom:12px;font-size:11.5px;padding:6px 12px;}
}