/* roulang page: index */
:root{
  --ink-900:#061619;
  --ink-700:#0C2A31;
  --primary:#0FA98C;
  --primary-dark:#0B8770;
  --neon:#3DF0C8;
  --accent:#FF8A3D;
  --bg:#F4F7F8;
  --surface:#FFFFFF;
  --line:#DCE6E9;
  --text:#12262B;
  --muted:#5E7784;
  --radius:16px;
  --radius-sm:12px;
  --radius-xs:10px;
  --shadow:0 6px 20px rgba(6,22,25,.07);
  --shadow-hover:0 12px 32px rgba(6,22,25,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-dark);}
h1,h2,h3,h4{font-family:inherit;font-weight:700;color:var(--text);line-height:1.35;margin:0;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;}
.num{font-variant-numeric:tabular-nums;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:92px 0;}
.section-dark{
  background:var(--ink-900);
  color:#DCEAEC;
  position:relative;
  overflow:hidden;
}
.section-dark::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(600px 300px at 88% 8%,rgba(61,240,200,.14),transparent 70%),
    radial-gradient(520px 280px at 4% 92%,rgba(15,169,140,.14),transparent 72%);
  pointer-events:none;
}
.section-dark > .container{position:relative;z-index:2;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:30px;letter-spacing:-.2px;}
.section-head p{margin-top:12px;color:var(--muted);font-size:16px;}
.section-dark .section-head h2{color:#EAFBF7;}
.section-dark .section-head p{color:#8FB4B8;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--primary);font-weight:700;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--neon);border-radius:2px;}
.section-dark .eyebrow{color:var(--neon);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease;
  text-align:center;line-height:1;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(15,169,140,.24);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--neon);border-color:rgba(61,240,200,.5);}
.btn-ghost:hover{background:rgba(61,240,200,.1);color:#fff;transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--ink-900);border-color:var(--line);}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-accent{background:transparent;color:var(--accent);border-color:rgba(255,138,61,.6);}
.btn-accent:hover{background:rgba(255,138,61,.1);color:var(--accent);}
.btn-sm{min-height:42px;padding:0 20px;font-size:14px;}
.btn:active{transform:scale(.98);}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
  outline:2px solid var(--neon);outline-offset:2px;
}
.btn[disabled]{opacity:.4;cursor:not-allowed;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink-900);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(6,22,25,.35);background:#051214;}
.header-row{
  display:flex;align-items:center;gap:22px;min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;color:#fff;flex:0 0 auto;}
.brand:hover{color:#fff;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),#0B8770);
  color:#fff;font-weight:700;font-size:17px;
  box-shadow:0 0 0 1px rgba(61,240,200,.4),0 0 18px rgba(61,240,200,.25);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1 1 auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 14px;font-size:15px;color:#A9C6C9;border-radius:8px;
}
.nav-link:hover{color:#fff;background:rgba(61,240,200,.07);}
.nav-link.is-active{color:var(--neon);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--neon);border-radius:2px;box-shadow:0 0 10px rgba(61,240,200,.85);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(61,240,200,.9),rgba(61,240,200,.15) 40%,transparent);
}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  background:rgba(255,255,255,.06);border:1px solid rgba(61,240,200,.25);
  cursor:pointer;position:relative;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:2px;background:#D9FBF3;border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span:nth-child(1){top:15px;}
.nav-toggle span:nth-child(2){top:21px;}
.nav-toggle span:nth-child(3){top:27px;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-nav{
  display:none;background:#082024;border-top:1px solid rgba(61,240,200,.18);
  padding:12px 0 20px;
}
.mobile-nav.is-open{display:block;}
.mobile-nav a{
  display:block;padding:13px 24px;color:#BEDADB;font-size:15px;border-bottom:1px solid rgba(255,255,255,.05);
}
.mobile-nav a.is-active{color:var(--neon);font-weight:700;}
.mobile-nav .btn{margin:16px 24px 0;width:calc(100% - 48px);}

/* ---------- hero ---------- */
.hero{
  position:relative;background:var(--ink-900);color:#E6F5F3;overflow:hidden;
  padding:84px 0 92px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(61,240,200,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(61,240,200,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(80% 70% at 60% 30%,#000,transparent 90%);
  -webkit-mask-image:radial-gradient(80% 70% at 60% 30%,#000,transparent 90%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(560px 320px at 78% 18%,rgba(61,240,200,.18),transparent 70%),
    radial-gradient(520px 300px at 6% 88%,rgba(255,138,61,.10),transparent 72%);
}
.hero > .container{position:relative;z-index:3;}
.hero .grid-padding-x{margin-left:-12px;margin-right:-12px;}
.hero .grid-padding-x > .cell{padding-left:12px;padding-right:12px;}
.hero h1{
  color:#fff;font-size:42px;letter-spacing:-.5px;margin:0 0 16px;
}
.hero h1 em{font-style:normal;color:var(--neon);}
.hero-sub{
  font-size:17px;color:#9FC2C4;margin:0 0 30px;max-width:520px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.trust-row{display:flex;flex-wrap:wrap;gap:26px;list-style:none;padding:0;margin:0;}
.trust-row li{display:flex;align-items:center;gap:9px;font-size:14px;color:#9FC2C4;}
.trust-row svg{flex:0 0 auto;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);
  box-shadow:0 0 0 1px rgba(61,240,200,.35),0 0 34px rgba(61,240,200,.2);
}
.hero-badge{
  position:absolute;top:-14px;right:16px;
  background:var(--ink-700);color:var(--neon);
  border:1px solid rgba(61,240,200,.5);border-radius:999px;
  padding:8px 16px;font-size:13px;font-weight:700;
  box-shadow:0 0 20px rgba(61,240,200,.28);
}
.hero-visual .float-card{
  position:absolute;left:-12px;bottom:-22px;background:var(--surface);
  border-radius:var(--radius-sm);padding:14px 18px;box-shadow:var(--shadow-hover);
  border-left:3px solid var(--accent);
}
.float-card strong{display:block;font-size:20px;color:var(--ink-900);}
.float-card span{font-size:13px;color:var(--muted);}

/* ---------- pain ---------- */
.pain-list{list-style:none;padding:0;margin:0;}
.pain-item{
  display:flex;gap:18px;align-items:flex-start;
  padding:22px 0;border-bottom:1px dashed var(--line);
}
.pain-item:first-child{padding-top:0;}
.pain-item:last-child{border-bottom:0;padding-bottom:0;}
.pain-mark{
  flex:0 0 auto;width:38px;height:38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(15,169,140,.1);color:var(--primary);font-weight:700;font-size:16px;
}
.pain-item h3{font-size:17px;margin-bottom:4px;}
.pain-item p{margin:0;font-size:14px;color:var(--muted);}

/* ---------- solutions ---------- */
.sol-grid{margin-left:-12px;margin-right:-12px;}
.sol-grid > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px;}
.sol-card{
  height:100%;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);
  display:flex;flex-direction:column;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.sol-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--primary);}
.sol-num{
  font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--primary);
  background:rgba(15,169,140,.09);border-radius:999px;padding:5px 12px;align-self:flex-start;
}
.sol-icon{
  width:46px;height:46px;border-radius:13px;margin:16px 0 14px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(61,240,200,.22),rgba(15,169,140,.12));
  color:var(--primary-dark);
}
.sol-card h3{font-size:19px;margin-bottom:10px;}
.sol-card p{font-size:14px;color:var(--muted);margin-bottom:18px;}
.sol-link{margin-top:auto;font-size:14px;font-weight:700;display:inline-flex;align-items:center;gap:6px;}
.sol-card-lg{padding:32px;}
.sol-card-lg h3{font-size:22px;}
.sol-card-lg p{font-size:15px;}
.sol-offset{margin-top:28px;}
@media(max-width:1024px){.sol-offset{margin-top:0;}}
.mid-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  margin-top:10px;padding:26px 28px;border-radius:var(--radius);
  background:var(--ink-900);color:#DCEAEC;
  box-shadow:0 0 0 1px rgba(61,240,200,.35),0 0 24px rgba(61,240,200,.18);
}
.mid-cta h3{color:#fff;font-size:20px;margin-bottom:4px;}
.mid-cta p{margin:0;color:#8FB4B8;font-size:14px;}

/* ---------- stats ---------- */
.stats{display:flex;flex-wrap:wrap;}
.stat{
  flex:1 1 25%;padding:10px 24px;border-left:1px solid rgba(61,240,200,.22);
}
.stat:first-child{border-left:0;padding-left:0;}
.stat strong{
  display:block;font-size:42px;line-height:1.1;color:var(--neon);
  font-variant-numeric:tabular-nums;letter-spacing:-1px;
}
.stat span{display:block;margin-top:8px;font-size:14px;color:#8FB4B8;}

/* ---------- inline form ---------- */
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;box-shadow:var(--shadow);
}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .hint{font-size:14px;color:var(--muted);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:700;color:var(--muted);margin-bottom:7px;}
.field input,.field select{
  width:100%;height:48px;border-radius:var(--radius-xs);border:1px solid var(--line);
  background:#fff;padding:0 14px;font-size:15px;color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input:focus,.field select:focus{
  border-color:var(--primary);box-shadow:0 0 0 3px rgba(15,169,140,.16);outline:none;
}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);margin:6px 0 18px;}
.check-row input{width:18px;height:18px;margin-top:3px;flex:0 0 auto;accent-color:var(--primary);}
.form-success{
  margin-top:16px;padding:14px 16px;border-radius:var(--radius-xs);
  background:rgba(15,169,140,.08);border:1px solid rgba(15,169,140,.3);
  color:var(--primary-dark);font-size:14px;
}

/* ---------- news ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;}
.news-head h2{font-size:30px;}
.news-head p{margin:10px 0 0;color:var(--muted);font-size:15px;}
.post-card{
  display:flex;flex-direction:column;height:100%;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);color:inherit;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--primary);color:inherit;}
.post-thumb{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,var(--ink-900),var(--primary));}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.badge{
  align-self:flex-start;font-size:12px;font-weight:700;color:var(--primary-dark);
  background:rgba(15,169,140,.1);border-radius:999px;padding:4px 12px;margin-bottom:12px;
}
.post-title{
  font-size:17px;margin:0 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-summary{
  font-size:14px;color:var(--muted);margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);
}
.post-foot .more{color:var(--primary);font-weight:700;}
.empty-state{
  grid-column:1/-1;text-align:center;padding:64px 24px;background:var(--surface);
  border:1px dashed var(--line);border-radius:var(--radius);color:var(--muted);
}
.empty-state p{margin-bottom:18px;font-size:15px;}
.news-list > .cell{margin-bottom:24px;}

/* ---------- faq ---------- */
.faq .accordion{background:transparent;border:0;margin:0;}
.faq .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;}
.faq .accordion-title{
  border:0;background:transparent;font-size:17px;font-weight:700;color:var(--text);
  padding:22px 52px 22px 20px;position:relative;line-height:1.6;
}
.faq .accordion-title:hover{color:var(--primary);}
.faq .accordion-title::before{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--primary);margin:0;width:auto;height:auto;background:none;
}
.faq .accordion-item.is-active{background:rgba(61,240,200,.05);border-left:3px solid var(--neon);}
.faq .accordion-item.is-active .accordion-title::before{content:"−";}
.faq .accordion-content{border:0;background:transparent;padding:0 52px 24px 20px;color:var(--muted);font-size:15px;}
.faq .accordion-content p:last-child{margin-bottom:0;}

/* ---------- privacy ---------- */
.privacy{
  background:#EDF3F4;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 28px;font-size:13.5px;color:var(--muted);line-height:1.9;
}
.privacy h2{font-size:16px;margin-bottom:10px;color:var(--text);}

/* ---------- cta band ---------- */
.cta-band{
  border-radius:var(--radius);padding:44px 40px;
  background:linear-gradient(120deg,var(--ink-900),#0A3B3A 70%);
  color:#DCEAEC;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  box-shadow:0 0 0 1px rgba(61,240,200,.3),0 0 30px rgba(61,240,200,.15);
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:8px;}
.cta-band p{margin:0;color:#8FB4B8;font-size:15px;max-width:600px;}

/* ---------- reveal ---------- */
.reveal{
  border-radius:var(--radius);border:0;padding:0;overflow:hidden;
  box-shadow:0 20px 60px rgba(6,22,25,.4);
}
.reveal .modal-head{background:var(--ink-900);padding:24px 28px;}
.reveal .modal-head h2{color:#fff;font-size:20px;}
.reveal .modal-head p{color:#8FB4B8;font-size:14px;margin:6px 0 0;}
.reveal .modal-body{padding:26px 28px 30px;}
.reveal .close-button{color:#9FC2C4;top:16px;right:18px;font-size:26px;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:#93B3B6;padding:70px 0 0;font-size:14px;}
.footer-grid{margin-left:-12px;margin-right:-12px;}
.footer-grid > .cell{padding-left:12px;padding-right:12px;margin-bottom:34px;}
.site-footer h3{color:#fff;font-size:16px;margin-bottom:16px;}
.site-footer .f-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px;}
.site-footer p{color:#7FA0A4;line-height:1.9;}
.f-links{list-style:none;padding:0;margin:0;}
.f-links li{margin-bottom:10px;}
.f-links a{color:#93B3B6;font-size:14px;}
.f-links a:hover{color:var(--neon);}
.footer-divider{height:1px;background:linear-gradient(90deg,rgba(61,240,200,.5),transparent);margin:8px 0 22px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13px;color:#6E8E92;
}
.footer-bottom a{color:#8FB4B8;}
.footer-bottom a:hover{color:var(--neon);}
.socials{display:flex;gap:12px;}
.socials a{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);border:1px solid rgba(61,240,200,.2);color:#9FC2C4;
}
.socials a:hover{border-color:var(--neon);color:var(--neon);}

/* ---------- responsive ---------- */
@media(max-width:1024px){
  .section{padding:70px 0;}
  .hero h1{font-size:34px;}
  .hero{padding:64px 0 76px;}
  .main-nav{display:none;}
  .nav-toggle{display:block;}
  .header-actions .btn{display:none;}
}
@media(max-width:768px){
  .container{padding:0 18px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .section{padding:56px 0;}
  .section-head h2,.news-head h2{font-size:24px;}
  .stat{flex:1 1 50%;padding:18px 18px;border-left:0;border-top:1px solid rgba(61,240,200,.2);}
  .stat:first-child{border-top:0;}
  .stat:nth-child(2){border-top:0;}
  .cta-band{padding:32px 24px;}
  .cta-band h2{font-size:22px;}
  .hero-visual{margin-top:34px;}
  .hero-visual .float-card{left:8px;bottom:-18px;}
  .mid-cta{padding:22px;}
}
@media(max-width:520px){
  .brand-text{font-size:15px;}
  .hero h1{font-size:28px;}
  .stat strong{font-size:32px;}
  .news-head{flex-direction:column;align-items:flex-start;}
  .form-card{padding:22px;}
  .hero-cta .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --ink-900:#061619;
  --ink-700:#0C2A31;
  --primary:#0FA98C;
  --primary-dark:#0C8A72;
  --neon:#3DF0C8;
  --accent:#FF8A3D;
  --bg:#F4F7F8;
  --surface:#FFFFFF;
  --line:#DCE6E9;
  --text:#12262B;
  --muted:#5E7784;
  --radius-card:16px;
  --radius-img:12px;
  --radius-input:10px;
  --shadow:0 6px 20px rgba(6,22,25,.07);
  --shadow-hover:0 12px 32px rgba(6,22,25,.12);
  --container:1200px;
  --read:820px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:var(--primary-dark);}
h1,h2,h3,h4{font-family:inherit;font-weight:700;color:var(--text);line-height:1.35;margin:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
button{font-family:inherit;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;letter-spacing:.2px;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  text-align:center;line-height:1;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(15,169,140,.28);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(15,169,140,.34);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{background:transparent;color:var(--neon);border-color:rgba(61,240,200,.55);}
.btn-ghost:hover{background:rgba(61,240,200,.10);color:var(--neon);border-color:var(--neon);transform:translateY(-2px);}
.btn-ghost:active{transform:scale(.98);}
.btn-accent{background:var(--accent);color:#3B1A05;box-shadow:0 6px 18px rgba(255,138,61,.3);}
.btn-accent:hover{background:#F07A28;color:#3B1A05;transform:translateY(-2px);}
.btn-accent:active{transform:scale(.98);}
.btn-outline{background:#fff;color:var(--text);border-color:var(--line);}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--neon);outline-offset:2px;}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;}

/* ============ 顶栏导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--ink-900);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(61,240,200,.85),rgba(61,240,200,0) 62%);
}
.site-header.is-scrolled{background:#041013;box-shadow:0 12px 30px rgba(4,16,19,.55);}
.header-row{display:flex;align-items:center;gap:28px;height:74px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;flex:0 0 auto;}
.brand:hover{color:#fff;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--primary),#0B6F62);
  color:#fff;font-weight:700;font-size:17px;
  box-shadow:0 0 0 1px rgba(61,240,200,.4),0 0 18px rgba(61,240,200,.28);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.4px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:74px;padding:0 12px;
  color:rgba(255,255,255,.72);font-size:15px;font-weight:500;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:18px;height:2px;border-radius:2px;background:transparent;
  transition:background-color .2s ease;
}
.nav-link:hover{color:#fff;}
.nav-link:hover::after{background:rgba(61,240,200,.4);}
.nav-link.is-active{color:var(--neon);font-weight:700;}
.nav-link.is-active::after{background:var(--neon);box-shadow:0 0 12px rgba(61,240,200,.85),0 0 22px rgba(61,240,200,.45);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.06);
  border:1px solid rgba(61,240,200,.25);cursor:pointer;padding:0 11px;
  flex-direction:column;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--neon);}
.mobile-nav{
  display:none;flex-direction:column;gap:2px;
  background:var(--ink-900);border-top:1px solid rgba(61,240,200,.18);
  padding:10px 24px 20px;
}
.mobile-nav.is-open{display:flex;}
.mobile-nav a{
  color:rgba(255,255,255,.8);padding:13px 4px;border-bottom:1px solid rgba(255,255,255,.06);
  font-size:15px;min-height:44px;display:flex;align-items:center;
}
.mobile-nav a.is-active{color:var(--neon);font-weight:700;}
.mobile-nav .btn{margin-top:14px;width:100%;}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;overflow:hidden;background:var(--ink-900);color:#fff;
  padding:38px 0 64px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 320px at 10% -10%,rgba(61,240,200,.16),transparent 70%),
    radial-gradient(520px 300px at 92% 110%,rgba(15,169,140,.2),transparent 72%);
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background-image:linear-gradient(rgba(61,240,200,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(61,240,200,.06) 1px,transparent 1px);
  background-size:52px 52px;
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:rgba(255,255,255,.55);margin-bottom:26px;}
.breadcrumb a{color:rgba(255,255,255,.75);}
.breadcrumb a:hover{color:var(--neon);}
.breadcrumb .sep{color:rgba(61,240,200,.7);}
.breadcrumb .current{
  color:rgba(255,255,255,.9);max-width:340px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.breadcrumb .crumb-cat{color:rgba(255,255,255,.72);}
.article-title{
  font-size:40px;line-height:1.3;color:#fff;letter-spacing:.4px;
  max-width:900px;margin-bottom:22px;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:15px;font-size:13.5px;color:rgba(255,255,255,.6);}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(61,240,200,.12);color:var(--neon);border:1px solid rgba(61,240,200,.35);
  font-size:12px;font-weight:700;letter-spacing:.3px;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(61,240,200,.5);}
.hero-cover{
  position:relative;z-index:2;margin-top:40px;border-radius:var(--radius-card);overflow:hidden;
  box-shadow:0 0 0 1px rgba(61,240,200,.3),0 0 28px rgba(61,240,200,.18);
  background:linear-gradient(135deg,var(--ink-700),var(--primary));
}
.hero-cover img{width:100%;height:340px;object-fit:cover;}

/* ============ 正文 ============ */
.article-main{padding:64px 0 88px;background:var(--bg);}
.article-wrap{
  max-width:var(--read);margin:0 auto;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:52px 56px 46px;box-shadow:var(--shadow);
}
.article-content{font-size:17.5px;line-height:1.9;color:var(--text);word-wrap:break-word;}
.article-content > *:first-child{margin-top:0;}
.article-content p{margin:0 0 20px;}
.article-content h2{
  position:relative;font-size:24px;line-height:1.45;margin:44px 0 16px;padding-left:15px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:2px;background:var(--neon);
  box-shadow:0 0 10px rgba(61,240,200,.6);
}
.article-content h3{font-size:20px;margin:34px 0 12px;color:var(--text);}
.article-content h4{font-size:17px;margin:26px 0 10px;color:var(--muted);}
.article-content ul,.article-content ol{margin:0 0 20px;padding-left:24px;}
.article-content ul li{list-style:disc;margin-bottom:9px;}
.article-content ol li{list-style:decimal;margin-bottom:9px;}
.article-content ul li::marker{color:var(--primary);}
.article-content ol li::marker{color:var(--primary);font-weight:700;}
.article-content blockquote{
  margin:26px 0;padding:18px 22px;border-left:3px solid var(--neon);
  background:#F1F7F6;border-radius:0 12px 12px 0;color:#1E444B;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:var(--radius-img);margin:26px 0;}
.article-content figure{margin:26px 0;}
.article-content figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-content table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;line-height:1.7;
  border:1px solid var(--line);border-radius:10px;overflow:hidden;
}
.article-content th,.article-content td{border:1px solid var(--line);padding:11px 13px;text-align:left;}
.article-content th{background:#EFF5F6;font-weight:700;color:var(--text);}
.article-content tbody tr:nth-child(even){background:#FAFCFC;}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.article-content a:hover{color:var(--primary-dark);}
.article-content hr{border:0;border-top:1px solid var(--line);margin:36px 0;}
.article-content code{
  background:#EEF4F5;padding:2px 6px;border-radius:6px;font-size:15px;
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;color:#0C5B4E;
}
.article-empty{text-align:center;padding:40px 0 22px;}
.article-empty .empty-title{font-size:22px;font-weight:700;margin-bottom:12px;}
.article-empty p{color:var(--muted);margin-bottom:26px;}

.article-foot{margin-top:44px;padding-top:30px;border-top:1px solid var(--line);}
.foot-note{font-size:13.5px;color:var(--muted);margin-bottom:20px;}
.foot-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ CTA 带 ============ */
.cta-band{background:var(--ink-900);position:relative;overflow:hidden;padding:56px 0;}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(560px 260px at 88% 20%,rgba(61,240,200,.16),transparent 70%);
}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
  border:1px solid rgba(61,240,200,.28);border-radius:var(--radius-card);
  padding:32px 36px;background:rgba(12,42,49,.72);
  box-shadow:0 0 0 1px rgba(61,240,200,.14) inset,0 0 26px rgba(61,240,200,.16);
}
.cta-inner h2{color:#fff;font-size:24px;margin-bottom:8px;}
.cta-inner p{color:rgba(255,255,255,.68);font-size:14.5px;max-width:640px;}

/* ============ 表单弹层 ============ */
.reveal{border-radius:var(--radius-card);border:0;padding:0;max-width:520px;}
.reveal-overlay{background:rgba(6,22,25,.72);}
.modal-head{background:var(--ink-900);color:#fff;padding:22px 28px;}
.modal-head h3{color:#fff;font-size:19px;}
.modal-head p{color:rgba(255,255,255,.6);font-size:13px;margin-top:6px;}
.modal-body{padding:24px 28px 28px;background:#fff;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:7px;color:var(--text);}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border-radius:var(--radius-input);
  border:1px solid var(--line);background:#FBFDFD;color:var(--text);font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input:focus,.field select:focus{
  border-color:var(--primary);box-shadow:0 0 0 3px rgba(15,169,140,.16);outline:none;
}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);line-height:1.7;}
.check input{width:18px;height:18px;margin-top:3px;accent-color:var(--primary);flex:0 0 auto;}
.modal-body .btn{width:100%;margin-top:6px;}
.success-tip{display:none;background:#EAF7F3;border:1px solid rgba(15,169,140,.3);color:#0C6B58;border-radius:10px;padding:12px 14px;font-size:13.5px;margin-bottom:14px;}
.success-tip.is-on{display:block;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7);padding:66px 0 26px;position:relative;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(61,240,200,0),rgba(61,240,200,.7),rgba(61,240,200,0));
}
.footer-grid{padding-bottom:36px;}
.f-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px;}
.site-footer p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.58);}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:14px;font-weight:700;}
.f-links li{margin-bottom:10px;}
.f-links a{color:rgba(255,255,255,.68);font-size:14px;}
.f-links a:hover{color:var(--neon);}
.footer-divider{height:1px;background:rgba(61,240,200,.22);margin:0 0 14px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.08);padding-top:22px;font-size:13px;color:rgba(255,255,255,.5);
}
.socials{display:flex;gap:12px;}
.socials a{
  width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(61,240,200,.25);color:var(--neon);
}
.socials a:hover{background:rgba(61,240,200,.12);color:var(--neon);}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .header-row{height:66px;gap:16px;}
  .header-actions .btn{display:none;}
  .article-title{font-size:32px;}
  .article-wrap{padding:40px 34px 36px;}
  .hero-cover img{height:260px;}
  .cta-inner{padding:28px 26px;}
}
@media screen and (max-width:640px){
  .container{padding:0 18px;}
  .brand-text{font-size:15px;max-width:150px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .article-hero{padding:26px 0 46px;}
  .article-title{font-size:26px;line-height:1.4;}
  .article-main{padding:40px 0 60px;}
  .article-wrap{padding:28px 20px 26px;border-radius:14px;}
  .article-content{font-size:16.5px;line-height:1.85;}
  .article-content h2{font-size:20px;}
  .article-content h3{font-size:18px;}
  .hero-cover img{height:190px;}
  .breadcrumb .current{max-width:180px;}
  .foot-actions .btn{width:100%;}
  .cta-band{padding:40px 0;}
  .cta-inner h2{font-size:20px;}
  .cta-inner .btn{width:100%;}
  .site-footer{padding:48px 0 22px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px;}
}

/* roulang page: category1 */
:root{
  --ink-900:#061619;
  --ink-700:#0C2A31;
  --primary:#0FA98C;
  --primary-dark:#0C8F76;
  --neon:#3DF0C8;
  --accent:#FF8A3D;
  --bg:#F4F7F8;
  --surface:#FFFFFF;
  --line:#DCE6E9;
  --text:#12262B;
  --muted:#5E7784;
  --radius-card:16px;
  --radius-img:12px;
  --radius-input:10px;
  --shadow:0 6px 20px rgba(6,22,25,.07);
  --shadow-hover:0 12px 32px rgba(6,22,25,.12);
  --max:1200px;
  --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","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-dark)}
button{font-family:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--text);letter-spacing:.2px}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
.num{font-variant-numeric:tabular-nums}

/* ---------- 容器与栅格 ---------- */
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.grid-x{display:flex;flex-flow:row wrap}
.grid-padding-x{margin-left:-12px;margin-right:-12px}
.grid-padding-x>.cell{padding-left:12px;padding-right:12px}
.cell{min-width:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border:1px solid transparent;border-radius:999px;
  font-size:15px;font-weight:700;line-height:1;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  text-align:center;
}
.btn:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(15,169,140,.28)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(15,169,140,.34)}
.btn-primary:active{transform:scale(.98);box-shadow:none}
.btn-outline{background:transparent;color:var(--ink-900);border-color:var(--line)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--neon);border-color:rgba(61,240,200,.45)}
.btn-ghost:hover{background:rgba(61,240,200,.1);color:var(--neon);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:10px 18px;font-size:14px}
.btn-lg{min-height:52px;padding:15px 30px;font-size:16px}
.btn-block{width:100%}
.btn[disabled]{opacity:.4;cursor:not-allowed}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink-900);
  color:#E8F6F3;
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(61,240,200,.85),transparent);
}
.site-header.is-scrolled{background:#041013;box-shadow:0 10px 26px rgba(3,16,19,.45)}
.header-row{display:flex;align-items:center;gap:24px;min-height:74px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;white-space:nowrap}
.brand:hover{color:var(--neon)}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;flex:0 0 34px;
  border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--neon));
  color:#04211C;font-weight:800;font-size:16px;
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 14px;
  color:rgba(232,246,243,.78);font-size:15px;font-weight:500;border-radius:10px;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;
  background:var(--neon);opacity:0;transform:scaleX(.4);transition:opacity .2s ease,transform .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(61,240,200,.08)}
.nav-link.is-active{color:var(--neon)}
.nav-link.is-active::after{opacity:1;transform:scaleX(1);box-shadow:0 0 12px rgba(61,240,200,.75)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(61,240,200,.35);border-radius:10px;
  background:rgba(61,240,200,.06);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--neon);transition:transform .22s ease,opacity .22s ease}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-nav{
  display:none;flex-direction:column;gap:4px;padding:12px var(--gutter) 20px;
  background:var(--ink-700);border-top:1px solid rgba(61,240,200,.18);
}
.mobile-nav a{
  display:block;padding:12px 14px;border-radius:10px;color:rgba(232,246,243,.85);
  font-size:15px;border:1px solid transparent;
}
.mobile-nav a:hover{background:rgba(61,240,200,.08);color:#fff}
.mobile-nav a.is-active{color:var(--neon);border-color:rgba(61,240,200,.45);background:rgba(61,240,200,.07)}
.mobile-nav .btn{margin-top:10px}
.mobile-nav.is-open{display:flex}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--surface);border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#B9CAD0}
.breadcrumb .current{color:var(--text);font-weight:600}

/* ---------- 页头 Hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--ink-900);color:#E8F6F3;padding:64px 0 72px}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 320px at 12% 18%,rgba(61,240,200,.20),transparent 70%),
    radial-gradient(520px 280px at 88% 4%,rgba(255,138,61,.16),transparent 72%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.7;
  background-image:
    linear-gradient(rgba(61,240,200,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(61,240,200,.07) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 85%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 85%);
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{display:flex;flex-wrap:wrap;align-items:center;gap:40px}
.hero-copy{flex:1 1 520px;min-width:0}
.hero-visual{flex:1 1 380px;min-width:0;position:relative}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;margin-bottom:18px;
  border-radius:999px;border:1px solid rgba(61,240,200,.4);background:rgba(61,240,200,.08);
  color:var(--neon);font-size:12px;letter-spacing:1px;font-weight:600;
}
.page-hero h1{
  font-size:40px;line-height:1.28;color:#fff;margin-bottom:16px;letter-spacing:.5px;
}
.page-hero h1 em{font-style:normal;color:var(--neon)}
.hero-lead{font-size:17px;color:rgba(232,246,243,.8);max-width:600px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;padding-top:22px;border-top:1px solid rgba(61,240,200,.2)}
.hero-point{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(232,246,243,.85)}
.hero-point svg{flex:0 0 18px;color:var(--neon)}
.hero-figure{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:0 0 0 1px rgba(61,240,200,.35),0 0 34px rgba(61,240,200,.18)}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0}
.hero-badge{
  position:absolute;top:16px;right:16px;padding:8px 14px;border-radius:999px;
  background:rgba(6,22,25,.72);border:1px solid rgba(61,240,200,.55);color:var(--neon);
  font-size:12px;font-weight:700;letter-spacing:.5px;box-shadow:0 0 18px rgba(61,240,200,.3);
}

/* ---------- 主体骨架 ---------- */
.section{padding:88px 0}
.section-sm{padding:64px 0}
.section-alt{background:var(--surface)}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-tag{
  display:inline-block;padding:5px 12px;margin-bottom:14px;border-radius:999px;
  background:rgba(15,169,140,.1);color:var(--primary);font-size:12px;font-weight:700;letter-spacing:1px;
}
.sec-head h2{font-size:30px;line-height:1.4;margin-bottom:12px}
.sec-head p{color:var(--muted);font-size:16px}

/* ---------- 分类页布局 ---------- */
.cat-layout{padding:72px 0 88px}
.cat-aside{position:sticky;top:100px}
.toc{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow);
}
.toc-title{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:1px;margin-bottom:14px}
.toc-link{
  display:block;padding:10px 12px;border-left:2px solid transparent;border-radius:0 10px 10px 0;
  color:var(--muted);font-size:14px;transition:all .2s ease;
}
.toc-link:hover{color:var(--primary);background:rgba(15,169,140,.06)}
.toc-link.is-active{
  color:var(--text);font-weight:700;border-left-color:var(--neon);
  background:rgba(61,240,200,.1);
}
.toc-cta{margin-top:20px;padding-top:18px;border-top:1px dashed var(--line)}
.toc-cta p{font-size:13px;color:var(--muted);margin-bottom:12px}
.cat-main{min-width:0}
.content-block{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:36px;box-shadow:var(--shadow);margin-bottom:32px;
}
.content-block:last-child{margin-bottom:0}
.content-block h2{font-size:24px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.content-block h2 .idx{
  display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;flex:0 0 30px;
  border-radius:9px;background:rgba(15,169,140,.12);color:var(--primary);font-size:14px;font-weight:800;
}
.content-block h3{font-size:18px;margin:24px 0 10px}
.content-block p{color:#2A4247}
.content-block .figure{margin:24px 0;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line)}
.content-block .figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.content-block .figure figcaption{padding:10px 14px;font-size:13px;color:var(--muted);background:#FAFCFD;border-top:1px solid var(--line)}
.lead-quote{
  border-left:3px solid var(--neon);background:rgba(61,240,200,.08);
  padding:16px 18px;border-radius:0 12px 12px 0;color:#25454A;font-size:15px;margin:20px 0;
}
.check-list{list-style:none;margin:18px 0}
.check-list li{
  position:relative;padding:14px 0 14px 34px;border-bottom:1px dashed var(--line);
  font-size:15px;color:#2A4247;
}
.check-list li:last-child{border-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:22px;width:16px;height:16px;border-radius:50%;
  background:rgba(15,169,140,.14);
  box-shadow:inset 0 0 0 2px var(--primary);
}
.check-list li b{color:var(--text)}

/* 步骤时间线 */
.steps{list-style:none;margin-top:22px}
.steps li{position:relative;padding:0 0 26px 46px;border-left:2px solid var(--line);margin-left:14px}
.steps li:last-child{border-left-color:transparent;padding-bottom:0}
.steps li::before{
  content:attr(data-step);position:absolute;left:-15px;top:2px;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--ink-900);color:var(--neon);font-size:13px;font-weight:800;
  box-shadow:0 0 0 3px rgba(61,240,200,.18);
}
.steps li h3{margin:0 0 6px;font-size:17px}
.steps li p{margin:0;color:var(--muted);font-size:15px}

/* 提示条 */
.tip-box{
  display:flex;gap:14px;padding:18px 20px;border-radius:12px;margin:22px 0;
  background:#FFF6EF;border:1px solid #FFDCC2;color:#7A4517;font-size:14px;line-height:1.75;
}
.tip-box svg{flex:0 0 20px;margin-top:3px;color:var(--accent)}
.tip-note{
  padding:16px 20px;border-radius:12px;background:#F1F7F6;border:1px solid var(--line);
  color:var(--muted);font-size:13px;line-height:1.8;
}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);margin-top:10px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:700;color:var(--text);font-family:inherit;
}
.faq-q:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-panel{display:none;padding:0 0 20px 16px;border-left:3px solid var(--neon)}
.faq-item.is-open .faq-panel{display:block}
.faq-panel p{color:var(--muted);font-size:15px;margin:0}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-900);color:#E8F6F3;padding:64px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px 260px at 20% 30%,rgba(61,240,200,.22),transparent 70%),
             radial-gradient(420px 220px at 92% 90%,rgba(255,138,61,.16),transparent 72%);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px}
.cta-inner h2{color:#fff;font-size:28px;margin-bottom:8px}
.cta-inner p{color:rgba(232,246,243,.78);margin:0;font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(232,246,243,.72);padding:64px 0 26px}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.5px}
.footer-grid{margin-bottom:34px}
.f-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(232,246,243,.66)}
.f-links{list-style:none}
.f-links li{margin-bottom:10px}
.f-links a{color:rgba(232,246,243,.72);font-size:14px;display:inline-flex;align-items:center;min-height:32px}
.f-links a:hover{color:var(--neon)}
.footer-divider{height:1px;background:linear-gradient(90deg,rgba(61,240,200,.65),transparent);margin-bottom:14px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding-top:20px;border-top:1px solid rgba(61,240,200,.16);font-size:13px;color:rgba(232,246,243,.6);
}
.socials{display:flex;gap:10px}
.socials a{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;
  border:1px solid rgba(61,240,200,.3);color:var(--neon);transition:all .2s ease;
}
.socials a:hover{background:rgba(61,240,200,.12);transform:translateY(-2px)}

/* ---------- 弹层 ---------- */
.modal{position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:20px;
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease}
.modal.is-open{opacity:1;visibility:visible}
.modal-backdrop{position:absolute;inset:0;background:rgba(6,22,25,.72)}
.modal-card{
  position:relative;z-index:2;width:100%;max-width:460px;background:var(--surface);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:0 24px 60px rgba(6,22,25,.35);
  transform:translateY(14px);transition:transform .24s ease;max-height:90vh;overflow-y:auto;
}
.modal.is-open .modal-card{transform:translateY(0)}
.modal-head{background:var(--ink-900);color:#fff;padding:24px 26px}
.modal-head h3{color:#fff;font-size:19px;margin-bottom:6px}
.modal-head p{color:rgba(232,246,243,.76);font-size:13px;margin:0}
.modal-body{padding:22px 26px 26px}
.modal-close{
  position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:50%;border:1px solid rgba(61,240,200,.4);
  background:rgba(61,240,200,.1);color:var(--neon);font-size:18px;line-height:1;cursor:pointer;
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:700;color:var(--text);margin-bottom:7px}
.field input,.field select{
  width:100%;height:46px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-input);
  background:#fff;font-size:15px;color:var(--text);font-family:inherit;transition:border-color .2s ease,box-shadow .2s ease;
}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(15,169,140,.14);
}
.field input::placeholder{color:#9BB0B7}
.check-row{display:flex;align-items:flex-start;gap:10px;margin:6px 0 18px;font-size:12.5px;color:var(--muted)}
.check-row input{width:18px;height:18px;margin-top:2px;accent-color:var(--primary)}
.form-success{
  display:none;padding:16px;border-radius:12px;background:rgba(15,169,140,.1);
  border:1px solid rgba(15,169,140,.4);color:#0C6B58;font-size:14px;margin-bottom:14px;
}
.form-success.is-visible{display:block}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-row{min-height:64px}
  .page-hero{padding:48px 0 56px}
  .page-hero h1{font-size:32px}
  .section{padding:64px 0}
  .cat-aside{position:static;margin-bottom:24px}
  .toc{display:flex;flex-wrap:wrap;gap:8px;padding:16px}
  .toc-title{width:100%;margin-bottom:6px}
  .toc-link{border-left:0;border:1px solid var(--line);border-radius:999px;padding:8px 14px}
  .toc-link.is-active{border-color:var(--neon)}
  .toc-cta{width:100%;margin-top:10px;padding-top:14px}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .hero-grid{gap:28px}
  .page-hero h1{font-size:28px}
  .hero-lead{font-size:16px}
  .section{padding:48px 0}
  .section-sm{padding:44px 0}
  .sec-head h2{font-size:23px}
  .content-block{padding:22px 18px;margin-bottom:20px}
  .content-block h2{font-size:20px}
  .cta-inner h2{font-size:22px}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .hero-points{gap:14px;flex-direction:column;align-items:flex-start}
  .btn{min-height:46px}
  .brand-text{font-size:15px}
}

/* roulang page: category3 */
:root{
  --ink-900:#061619;
  --ink-700:#0C2A31;
  --primary:#0FA98C;
  --primary-dark:#0C8E75;
  --neon:#3DF0C8;
  --accent:#FF8A3D;
  --bg:#F4F7F8;
  --surface:#FFFFFF;
  --line:#DCE6E9;
  --text:#12262B;
  --muted:#5E7784;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-1:0 6px 20px rgba(6,22,25,.07);
  --shadow-2:0 12px 32px rgba(6,22,25,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;border:0;background:none;cursor:pointer;}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3{font-weight:700;line-height:1.35;letter-spacing:.2px;}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-sm{padding:56px 0;}
.section-head{margin-bottom:36px;}
.section-head h2{font-size:30px;line-height:1.4;}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px;max-width:760px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.5px;color:var(--primary);
  text-transform:uppercase;font-weight:700;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--neon);border-radius:2px;box-shadow:0 0 10px rgba(61,240,200,.8);}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--ink-900);transition:background .25s ease,box-shadow .25s ease;}
.site-header::after{content:"";display:block;height:1px;background:linear-gradient(90deg,transparent,var(--neon),transparent);opacity:.75;}
.site-header.is-scrolled{background:#040f11;box-shadow:0 12px 30px rgba(0,0,0,.4);}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--neon));
  color:#04211c;font-size:17px;font-weight:800;flex:0 0 auto;
}
.brand-text{font-size:17px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center;}
.nav-link{position:relative;padding:10px 14px;font-size:15px;color:#B8CFD4;border-radius:8px;transition:color .2s ease,background .2s ease;white-space:nowrap;}
.nav-link:hover{color:#fff;background:rgba(61,240,200,.08);}
.nav-link.is-active{color:var(--neon);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 10px rgba(61,240,200,.9);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 10px 22px rgba(15,169,140,.28);}
.btn-primary:active{transform:scale(.98);box-shadow:none;}
.btn-ghost{border-color:rgba(61,240,200,.45);color:var(--neon);background:rgba(61,240,200,.04);}
.btn-ghost:hover{background:rgba(61,240,200,.12);transform:translateY(-2px);}
.btn-line{border-color:var(--line);color:var(--text);background:#fff;}
.btn-line:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(61,240,200,.3);align-items:center;justify-content:center;flex-direction:column;gap:5px;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--neon);border-radius:2px;}
.mobile-nav{display:none;padding:10px 24px 20px;background:var(--ink-700);border-top:1px solid rgba(61,240,200,.18);}
.mobile-nav a{display:block;padding:13px 4px;color:#C9DDE1;font-size:15px;border-bottom:1px solid rgba(255,255,255,.06);}
.mobile-nav a.is-active{color:var(--neon);}
.mobile-nav .btn{width:100%;margin-top:16px;}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:#8FAEB5;flex-wrap:wrap;}
.breadcrumb a{color:#B8CFD4;transition:color .2s;}
.breadcrumb a:hover{color:var(--neon);}
.breadcrumb .sep{color:rgba(255,255,255,.28);}
.breadcrumb .current{color:var(--neon);}

/* ---------- page hero ---------- */
.page-hero{position:relative;background:var(--ink-900);color:#fff;overflow:hidden;padding:44px 0 76px;}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 320px at 80% 15%,rgba(61,240,200,.16),transparent 66%),
    radial-gradient(520px 300px at 6% 96%,rgba(255,138,61,.12),transparent 70%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(61,240,200,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(61,240,200,.07) 1px,transparent 1px);
  background-size:58px 58px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
}
.page-hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;margin-top:28px;}
.hero-copy h1{font-size:40px;line-height:1.32;margin-bottom:16px;}
.hero-copy h1 .h1-sub{color:var(--neon);}
.hero-lead{font-size:16px;color:#AFC9CF;max-width:520px;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;}
.hero-points{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;padding-top:24px;border-top:1px solid rgba(61,240,200,.16);}
.hero-points li{display:flex;align-items:center;gap:9px;font-size:14px;color:#AFC9CF;}
.hero-points svg{color:var(--neon);flex:0 0 auto;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-lg);
  box-shadow:0 0 0 1px rgba(61,240,200,.35),0 0 34px rgba(61,240,200,.2);
}
.hero-badge{
  position:absolute;top:-14px;right:-8px;
  background:rgba(6,22,25,.86);color:var(--neon);
  border:1px solid rgba(61,240,200,.5);border-radius:999px;
  padding:8px 16px;font-size:13px;font-weight:600;
  box-shadow:0 0 22px rgba(61,240,200,.3);
}

/* ---------- alternate rows ---------- */
.alt-layout{display:grid;grid-template-columns:1fr 340px;gap:48px;align-items:start;}
.alt-list{display:flex;flex-direction:column;gap:56px;}
.alt-row{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;}
.alt-row .alt-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-md);box-shadow:var(--shadow-1);}
.alt-row.is-reverse .alt-media{order:2;}
.alt-row.is-reverse .alt-body{order:1;}
.alt-body h3{font-size:22px;margin-bottom:14px;}
.alt-body p{color:#39525A;font-size:15.5px;margin-bottom:12px;}
.alt-body p:last-child{margin-bottom:0;}
.tag{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.5px;
  color:var(--primary);background:rgba(15,169,140,.1);
  border-radius:999px;padding:5px 12px;margin-bottom:14px;
}
.tip-card{
  position:sticky;top:100px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-1);
}
.tip-card h3{font-size:17px;margin-bottom:8px;}
.tip-card > p{font-size:14px;color:var(--muted);margin-bottom:18px;}
.tip-list li{display:flex;gap:12px;padding:13px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:#2C464D;}
.tip-list li:last-child{border-bottom:0;}
.tip-list .dot{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  background:rgba(15,169,140,.12);color:var(--primary);
  font-size:12px;font-weight:700;display:grid;place-items:center;margin-top:3px;
}
.tip-card .tip-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;color:var(--primary);font-size:14px;font-weight:600;}
.tip-card .tip-link:hover{gap:10px;}

/* ---------- checklist ---------- */
.check-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:38px 40px;box-shadow:var(--shadow-1);}
.check-list li{display:flex;gap:18px;padding:22px 0;border-bottom:1px dashed var(--line);}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list li:first-child{padding-top:0;}
.check-num{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,rgba(15,169,140,.14),rgba(61,240,200,.2));
  color:var(--primary);font-weight:700;display:grid;place-items:center;font-variant-numeric:tabular-nums;
}
.check-list h3{font-size:17px;margin-bottom:6px;}
.check-list p{font-size:15px;color:#39525A;}
.check-aside{margin-top:26px;padding-top:22px;border-top:1px solid var(--line);font-size:14px;color:var(--muted);}

/* ---------- stat band ---------- */
.stat-band{background:var(--ink-900);color:#fff;position:relative;overflow:hidden;}
.stat-band::before{content:"";position:absolute;inset:0;background:radial-gradient(520px 260px at 50% 0%,rgba(61,240,200,.14),transparent 70%);}
.stat-band .container{position:relative;z-index:2;}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);}
.stat-item{padding:34px 30px;text-align:center;border-right:1px solid rgba(61,240,200,.18);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:44px;font-weight:700;color:var(--neon);font-variant-numeric:tabular-nums;line-height:1.1;}
.stat-label{font-size:13.5px;color:#9FBDC4;margin-top:8px;}
.stat-band .band-title{font-size:22px;text-align:center;margin-bottom:6px;}
.stat-band .band-sub{font-size:14px;color:#9FBDC4;text-align:center;margin-bottom:26px;}

/* ---------- faq ---------- */
.faq-acc{border:0;background:transparent;margin:0;}
.faq-acc .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;}
.faq-acc .accordion-title{
  position:relative;padding:20px 60px 20px 20px;font-size:17px;font-weight:700;color:var(--text);
  background:transparent;border:0;transition:background .2s ease,color .2s ease;
}
.faq-acc .accordion-title:hover{background:#EFF6F5;color:var(--primary);}
.faq-acc .accordion-title::before{
  content:"+";position:absolute;right:20px;top:50%;margin-top:-14px;
  font-size:22px;font-weight:400;color:var(--primary);line-height:1;
}
.faq-acc .accordion-item.is-active .accordion-title::before{content:"−";}
.faq-acc .accordion-title::after{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;background:transparent;
}
.faq-acc .accordion-item.is-active .accordion-title{background:#F0F7F6;color:var(--primary);}
.faq-acc .accordion-item.is-active .accordion-title::after{background:var(--neon);box-shadow:0 0 12px rgba(61,240,200,.8);}
.faq-acc .accordion-content{border:0;background:#F7FBFA;padding:6px 24px 22px 20px;font-size:15px;color:#39525A;}

/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--radius-lg);padding:52px 48px;color:#fff;background:var(--ink-700);}
.cta-band .cta-bg{position:absolute;inset:0;}
.cta-band .cta-bg img{width:100%;height:100%;object-fit:cover;opacity:.22;}
.cta-band .cta-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(6,22,25,.94),rgba(12,42,49,.7));}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:26px;margin-bottom:10px;}
.cta-inner p{font-size:15px;color:#AFC9CF;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:#9FBDC4;padding:64px 0 26px;margin-top:0;}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-grid{row-gap:36px;}
.f-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px;}
.site-footer p{font-size:14px;line-height:1.85;}
.f-links li{margin-bottom:10px;}
.f-links a{font-size:14px;color:#9FBDC4;transition:color .2s,padding .2s;}
.f-links a:hover{color:var(--neon);padding-left:4px;}
.footer-divider{height:1px;background:linear-gradient(90deg,var(--neon),transparent);margin-bottom:16px;opacity:.6;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13px;color:#7E9AA1;
}
.socials{display:flex;gap:12px;}
.socials a{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  border:1px solid rgba(61,240,200,.28);color:var(--neon);transition:background .2s,transform .2s;
}
.socials a:hover{background:rgba(61,240,200,.12);transform:translateY(-2px);}

/* ---------- modal & form ---------- */
.reveal.access-modal{border-radius:var(--radius-lg);border:0;padding:0;overflow:hidden;max-width:520px;}
.modal-head{background:var(--ink-900);color:#fff;padding:24px 28px;}
.modal-head h3{font-size:19px;margin-bottom:6px;}
.modal-head p{font-size:14px;color:#9FBDC4;}
.access-form{padding:24px 28px 28px;background:var(--surface);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;min-height:46px;padding:11px 14px;font-size:15px;color:var(--text);
  border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;
  transition:border-color .2s,box-shadow .2s;font-family:inherit;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(15,169,140,.16);
}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);margin-bottom:18px;}
.check-line input{width:18px;height:18px;min-height:18px;margin-top:3px;flex:0 0 auto;accent-color:var(--primary);}
.access-form .btn{width:100%;}
.form-state{display:none;padding:14px;border-radius:var(--radius-sm);background:rgba(15,169,140,.1);color:var(--primary-dark);font-size:14px;margin-top:14px;}
.form-state.is-visible{display:block;}
.close-button{
  position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;
  color:#fff;font-size:22px;line-height:1;display:grid;place-items:center;background:rgba(255,255,255,.08);
}
.close-button:hover{background:rgba(61,240,200,.24);}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .mobile-nav.is-open{display:block;}
  .section{padding:64px 0;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .alt-layout{grid-template-columns:1fr;gap:34px;}
  .tip-card{position:static;}
  .alt-row{grid-template-columns:1fr;gap:22px;}
  .alt-row.is-reverse .alt-media{order:1;}
  .alt-row.is-reverse .alt-body{order:2;}
  .header-actions .btn-primary{display:none;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:52px 0;}
  .hero-copy h1{font-size:30px;}
  .section-head h2{font-size:24px;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .stat-item{border-right:0;border-bottom:1px solid rgba(61,240,200,.18);}
  .stat-item:nth-child(2n){border-right:0;}
  .stat-item:last-child{border-bottom:0;grid-column:span 2;}
  .stat-num{font-size:34px;}
  .check-wrap{padding:26px 20px;}
  .cta-band{padding:34px 22px;}
  .cta-inner h2{font-size:22px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .hero-copy h1{font-size:26px;}
  .hero-points{gap:14px;}
  .stat-grid{grid-template-columns:1fr;}
  .stat-item{grid-column:auto!important;}
  .stat-item{border-bottom:1px solid rgba(61,240,200,.18);}
  .alt-list{gap:38px;}
}

/* roulang page: category2 */
:root{
  --ink-900:#061619;
  --ink-700:#0C2A31;
  --ink-600:#123840;
  --primary:#0FA98C;
  --primary-dark:#0B8A72;
  --neon:#3DF0C8;
  --accent:#FF8A3D;
  --bg:#F4F7F8;
  --surface:#FFFFFF;
  --line:#DCE6E9;
  --text:#12262B;
  --muted:#5E7784;
  --radius-card:16px;
  --radius-img:12px;
  --radius-input:10px;
  --shadow-1:0 6px 20px rgba(6,22,25,.07);
  --shadow-2:0 12px 32px rgba(6,22,25,.12);
  --glow:0 0 0 1px rgba(61,240,200,.35), 0 0 24px rgba(61,240,200,.22);
  --container:1200px;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
a:hover{color:var(--primary-dark)}
h1,h2,h3,h4{font-family:var(--font-sans);font-weight:700;color:inherit;line-height:1.35;margin:0}
p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.grid-x.grid-padding-x{margin-left:-.9375rem;margin-right:-.9375rem}

/* ======== 顶栏 ======== */
.site-header{position:sticky;top:0;z-index:90;background:var(--ink-900)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,var(--neon),transparent);opacity:.75;pointer-events:none}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(6,22,25,.35);background:#040f12}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:22px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;letter-spacing:.2px;flex:0 0 auto}
.brand:hover{color:#fff}
.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--neon));color:var(--ink-900);display:grid;place-items:center;font-size:17px;font-weight:700;box-shadow:0 0 16px rgba(61,240,200,.35);flex:0 0 34px}
.main-nav{display:flex;align-items:center;gap:4px;flex-wrap:nowrap}
.nav-link{position:relative;padding:9px 11px;font-size:14.5px;color:rgba(255,255,255,.72);border-radius:8px;white-space:nowrap}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav-link.is-active{color:var(--neon)}
.nav-link.is-active::after{content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;border-radius:2px;background:var(--neon);box-shadow:0 0 10px var(--neon)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.18);background:transparent;border-radius:10px;flex-direction:column;gap:4px;align-items:center;justify-content:center;cursor:pointer;padding:0}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-nav{display:none;background:var(--ink-700);border-top:1px solid rgba(61,240,200,.18);padding:10px 24px 24px}
.mobile-nav.is-open{display:block}
.mobile-nav a{display:block;padding:13px 0;color:rgba(255,255,255,.78);font-size:15px;border-bottom:1px dashed rgba(255,255,255,.1);min-height:44px}
.mobile-nav a:hover{color:#fff}
.mobile-nav a.is-active{color:var(--neon)}
.mobile-nav .btn{width:100%;margin-top:18px}

/* ======== 按钮 ======== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border:1px solid transparent;border-radius:999px;font-size:15px;font-weight:700;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;text-align:center;line-height:1.2}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(15,169,140,.28)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-neon{background:var(--neon);color:var(--ink-900)}
.btn-neon:hover{background:#2ad9b3;color:var(--ink-900);transform:translateY(-2px);box-shadow:0 0 22px rgba(61,240,200,.5)}
.btn-neon:active{transform:translateY(0) scale(.98)}
.btn-outline{background:transparent;color:#fff;border-color:rgba(61,240,200,.5)}
.btn-outline:hover{color:var(--neon);border-color:var(--neon);box-shadow:var(--glow);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--line)}
.btn-ghost:hover{color:var(--primary-dark);border-color:var(--primary);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}

/* ======== 页头 ======== */
.page-hero{position:relative;background:var(--ink-900);color:#fff;padding:52px 0 68px;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(620px 340px at 10% 4%,rgba(61,240,200,.20),transparent 70%),
  radial-gradient(560px 320px at 92% 96%,rgba(255,138,61,.14),transparent 70%);pointer-events:none}
.page-hero::after{content:"";position:absolute;inset:0;background-image:
  linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:48px 48px;opacity:.55;pointer-events:none;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent)}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.6);margin-bottom:22px}
.breadcrumb a{color:rgba(255,255,255,.72)}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb .sep{opacity:.4}
.breadcrumb .current{color:var(--neon)}
.page-hero h1{font-size:clamp(26px,3.3vw,42px);line-height:1.28;margin:0 0 18px;letter-spacing:.2px}
.hero-lead{font-size:17px;color:rgba(255,255,255,.78);max-width:600px;margin:0 0 28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 28px}
.hero-points span{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72)}
.hero-points i{width:7px;height:7px;border-radius:50%;background:var(--neon);box-shadow:0 0 10px var(--neon);display:inline-block}
.hero-visual{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--glow);margin-top:34px}
.hero-visual img{width:100%;height:340px;object-fit:cover}
.hero-visual .tag-float{position:absolute;top:14px;right:14px;background:rgba(6,22,25,.72);color:var(--neon);border:1px solid rgba(61,240,200,.4);border-radius:999px;padding:6px 14px;font-size:12.5px;letter-spacing:.04em}

/* ======== 通用板块 ======== */
.section{padding:88px 0}
.section-alt{background:var(--surface)}
.section-dark{background:var(--ink-900);color:#fff}
.section-head{margin-bottom:44px;max-width:760px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);margin:0 0 12px}
.section-head p{color:var(--muted);font-size:16px}
.section-dark .section-head h2{color:#fff}
.section-dark .section-head p{color:rgba(255,255,255,.72)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.14em;color:var(--primary);font-weight:700;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:2px;background:currentColor;border-radius:2px}
.section-dark .eyebrow{color:var(--neon)}

/* ======== 时间线 ======== */
.timeline{position:relative;margin-top:8px}
.timeline::before{content:"";position:absolute;left:31px;top:14px;bottom:14px;width:2px;border-radius:2px;background:linear-gradient(180deg,var(--neon),rgba(15,169,140,.35) 60%,transparent)}
.tl-item{position:relative;display:grid;grid-template-columns:64px minmax(0,1fr);gap:22px;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-node{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:17px;font-variant-numeric:tabular-nums;background:var(--surface);color:var(--primary);border:2px solid var(--primary);box-shadow:0 0 0 6px rgba(15,169,140,.08);position:relative;z-index:2}
.tl-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 28px;box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--primary)}
.tl-card h3{margin:0 0 10px;font-size:19px}
.tl-card p{margin:0 0 10px;color:var(--muted);font-size:15.5px}
.tl-card p:last-child{margin-bottom:0}
.tl-tip{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);background:rgba(15,169,140,.08);border-radius:999px;padding:5px 12px;margin-top:4px}
.tl-item.is-alt .tl-card{margin-left:52px;background:var(--ink-900);border-color:transparent;box-shadow:var(--glow)}
.tl-item.is-alt .tl-card h3{color:#fff}
.tl-item.is-alt .tl-card p{color:rgba(255,255,255,.74)}
.tl-item.is-alt .tl-tip{color:var(--neon);background:rgba(61,240,200,.1)}
.tl-item.is-alt .tl-node{background:var(--ink-900);color:var(--neon);border-color:var(--neon);box-shadow:0 0 18px rgba(61,240,200,.3)}

/* ======== 触发核验 两列列表 ======== */
.info-cols{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:start}
.info-block h3{font-size:18px;margin:0 0 6px}
.info-block .block-note{color:var(--muted);font-size:14.5px;margin-bottom:14px}
.trigger-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line)}
.trigger-list li:last-child{border-bottom:none}
.trigger-list .idx{flex:0 0 30px;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--primary);background:rgba(15,169,140,.1);font-variant-numeric:tabular-nums}
.trigger-list strong{display:block;font-size:15.5px;font-weight:700;margin-bottom:2px}
.trigger-list span.desc{color:var(--muted);font-size:14.5px;line-height:1.7}
.info-block.is-dark{background:var(--ink-900);border-radius:var(--radius-card);padding:28px;box-shadow:var(--glow)}
.info-block.is-dark h3{color:#fff}
.info-block.is-dark .block-note{color:rgba(255,255,255,.68)}
.info-block.is-dark .trigger-list li{border-bottom-color:rgba(255,255,255,.1)}
.info-block.is-dark .trigger-list strong{color:#fff}
.info-block.is-dark .trigger-list span.desc{color:rgba(255,255,255,.7)}
.info-block.is-dark .trigger-list .idx{color:var(--neon);background:rgba(61,240,200,.12)}

/* ======== 图文左右 ======== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split-media{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
.split-media img{width:100%;height:380px;object-fit:cover}
.split-media .media-cap{position:absolute;left:14px;bottom:14px;background:rgba(6,22,25,.72);color:#fff;font-size:12.5px;border-radius:999px;padding:6px 14px;border:1px solid rgba(61,240,200,.35)}
.split-copy h2{font-size:clamp(22px,2.4vw,30px);margin:0 0 14px}
.split-copy > p{color:var(--muted);margin-bottom:20px}
.checklist li{display:flex;gap:12px;padding:11px 0;font-size:15.5px;color:var(--text);border-bottom:1px dashed var(--line)}
.checklist li:last-child{border-bottom:none}
.checklist .tick{flex:0 0 22px;width:22px;height:22px;border-radius:50%;background:rgba(15,169,140,.12);color:var(--primary);display:grid;place-items:center;font-size:12px;font-weight:700;margin-top:4px}

/* ======== 排查方向 ======== */
.q-layout{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:48px;align-items:start}
.q-intro h2{font-size:clamp(22px,2.4vw,30px);margin:0 0 12px}
.q-intro p{color:var(--muted)}
.q-list li{display:flex;gap:16px;padding:18px 0;border-top:1px solid var(--line)}
.q-list li:first-child{border-top:none;padding-top:0}
.q-list .num{font-size:20px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;flex:0 0 44px}
.q-list strong{display:block;font-size:16.5px;margin-bottom:4px}
.q-list p{color:var(--muted);font-size:15px;margin:0}

/* ======== FAQ ======== */
.faq-wrap{max-width:900px;margin:0 auto}
.faq .accordion{background:transparent;border:none;margin:0}
.faq .accordion-item{background:var(--surface);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq .accordion-item:hover{border-color:var(--primary)}
.faq .accordion-item.is-active{border-color:var(--primary);box-shadow:var(--shadow-1)}
.faq .accordion-title{display:block;position:relative;padding:18px 54px 18px 22px;font-size:16.5px;font-weight:700;color:var(--text);background:transparent;border:none;line-height:1.6}
.faq .accordion-title:hover{color:var(--primary);background:transparent}
.faq .accordion-title::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;background:var(--neon);opacity:0;transition:opacity .2s ease}
.faq .accordion-title::after{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);font-size:20px;font-weight:400;color:var(--primary);line-height:1}
.faq .accordion-item.is-active .accordion-title::before{opacity:1}
.faq .accordion-item.is-active .accordion-title{color:var(--primary);background:rgba(15,169,140,.05)}
.faq .accordion-item.is-active .accordion-title::after{content:"−"}
.faq .accordion-content{display:none;padding:0 22px 20px 22px;border:none;color:var(--muted);font-size:15.5px;background:transparent}
.faq .accordion-item.is-active .accordion-content{display:block}

/* ======== CTA 带 ======== */
.cta-band{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;border-radius:20px;padding:48px;color:#fff;background-color:var(--ink-900);background-size:cover;background-position:center;overflow:hidden;box-shadow:var(--glow)}
.cta-band h2{font-size:clamp(21px,2.2vw,28px);margin:0 0 10px;color:#fff}
.cta-band p{margin:0;color:rgba(255,255,255,.74);max-width:560px;font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ======== 弹层 ======== */
.modal-mask{position:fixed;inset:0;z-index:130;background:rgba(6,22,25,.74);display:none;align-items:center;justify-content:center;padding:20px}
.modal-mask.is-open{display:flex}
.modal{width:100%;max-width:540px;background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 28px 64px rgba(0,0,0,.34);max-height:92vh;overflow-y:auto}
.modal-head{background:var(--ink-900);color:#fff;padding:18px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.modal-head h2{font-size:18px;margin:0;color:#fff}
.modal-close{background:transparent;border:1px solid rgba(255,255,255,.24);color:rgba(255,255,255,.8);width:34px;height:34px;border-radius:9px;cursor:pointer;font-size:16px;line-height:1}
.modal-close:hover{border-color:var(--neon);color:var(--neon)}
.modal-body{padding:24px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}
.field input,.field select{width:100%;height:46px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-input);font-size:15px;font-family:inherit;color:var(--text);background:#fff;transition:border-color .2s ease,box-shadow .2s ease}
.field input:focus,.field select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(15,169,140,.14)}
.checkbox-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);margin:6px 0 18px;line-height:1.7}
.checkbox-row input{width:18px;height:18px;flex:0 0 18px;margin-top:4px;accent-color:var(--primary)}
.form-success{display:none;background:rgba(15,169,140,.08);border:1px solid rgba(15,169,140,.35);color:var(--primary-dark);border-radius:12px;padding:16px;font-size:14.5px;margin-top:16px}
.form-success.is-show{display:block}

/* ======== 页脚 ======== */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.66);padding:64px 0 24px;font-size:14.5px}
.site-footer .footer-grid{row-gap:32px}
.f-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px}
.site-footer h3{color:#fff;font-size:15px;font-weight:700;margin:0 0 16px}
.site-footer p{margin:0;line-height:1.8}
.f-links li a{display:block;padding:7px 0;color:rgba(255,255,255,.64);font-size:14.5px;min-height:38px}
.f-links li a:hover{color:var(--neon)}
.footer-divider{height:1px;background:linear-gradient(90deg,var(--neon),transparent);margin:0 0 16px;opacity:.6}
.footer-bottom{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;border-top:1px solid rgba(255,255,255,.08);margin-top:44px;padding-top:20px;font-size:13.5px;color:rgba(255,255,255,.5)}
.socials{display:flex;gap:10px}
.socials a{width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.14);display:grid;place-items:center;color:rgba(255,255,255,.7)}
.socials a:hover{border-color:var(--neon);color:var(--neon);box-shadow:var(--glow)}

/* ======== 响应式 ======== */
@media screen and (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn-sm{display:none}
  .section{padding:64px 0}
  .page-hero{padding:40px 0 56px}
  .hero-visual{margin-top:8px}
  .hero-visual img{height:280px}
  .q-layout{grid-template-columns:1fr;gap:28px}
  .split{gap:32px}
  .split-media img{height:320px}
  .info-cols{grid-template-columns:1fr;gap:30px}
}
@media screen and (max-width:768px){
  .section{padding:56px 0}
  .header-row{min-height:66px}
  .brand-text{font-size:15px}
  .hero-visual img{height:220px}
  .tl-item{grid-template-columns:44px minmax(0,1fr);gap:14px}
  .tl-node{width:40px;height:40px;font-size:15px}
  .timeline::before{left:19px}
  .tl-card{padding:20px;border-radius:14px}
  .tl-item.is-alt .tl-card{margin-left:0}
  .split{grid-template-columns:1fr}
  .split-media img{height:240px}
  .cta-band{padding:32px 22px;border-radius:16px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .modal-body{padding:20px}
}
@media screen and (max-width:520px){
  .container{padding:0 18px}
  .page-hero h1{font-size:26px}
  .hero-lead{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .q-list .num{flex:0 0 34px;font-size:17px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category4 */
:root{
  --ink-900:#061619;
  --ink-700:#0C2A31;
  --primary:#0FA98C;
  --primary-dark:#0B8A72;
  --neon:#3DF0C8;
  --accent:#FF8A3D;
  --bg:#F4F7F8;
  --surface:#FFFFFF;
  --line:#DCE6E9;
  --text:#12262B;
  --muted:#5E7784;
  --radius-card:16px;
  --radius-img:12px;
  --radius-input:10px;
  --shadow-card:0 6px 20px rgba(6,22,25,.07);
  --shadow-hover:0 12px 32px rgba(6,22,25,.12);
  --glow:0 0 0 1px rgba(61,240,200,.35), 0 0 24px rgba(61,240,200,.22);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--primary-dark)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--text)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,22,25,.96);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(61,240,200,0),rgba(61,240,200,.85),rgba(61,240,200,0));
}
.site-header.is-scrolled{background:rgba(4,16,19,.99);box-shadow:0 10px 30px rgba(0,0,0,.35)}
.header-row{display:flex;align-items:center;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--neon));
  color:#04211B;font-weight:700;font-size:18px;line-height:1;
}
.brand-text{color:#fff;font-weight:700;font-size:17px;letter-spacing:.4px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:8px;
  color:rgba(255,255,255,.72);font-size:15px;line-height:1.2;
}
.nav-link:hover{color:#fff;background:rgba(61,240,200,.08)}
.nav-link.is-active{color:var(--neon)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--neon);box-shadow:0 0 10px rgba(61,240,200,.9);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(61,240,200,.35);
  background:transparent;border-radius:10px;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--neon);border-radius:2px}
.mobile-nav{display:none;padding:8px 24px 22px;background:var(--ink-700);border-top:1px solid rgba(61,240,200,.2)}
.mobile-nav.is-open{display:block}
.mobile-nav a{display:block;padding:13px 4px;color:rgba(255,255,255,.8);font-size:15px;border-bottom:1px solid rgba(255,255,255,.07)}
.mobile-nav a.is-active{color:var(--neon)}
.mobile-nav .btn{margin-top:16px;width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease;
}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(15,169,140,.32)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost-dark{background:transparent;color:var(--neon);border-color:rgba(61,240,200,.55)}
.btn-ghost-dark:hover{background:rgba(61,240,200,.1);color:var(--neon);transform:translateY(-2px)}
.btn-ghost-dark:active{transform:scale(.98)}
.btn-outline{background:#fff;color:var(--ink-900);border-color:var(--line)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary-dark);transform:translateY(-2px)}
.btn:disabled{opacity:.4;cursor:not-allowed}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--ink-900);
  padding:26px 0 72px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(560px 320px at 12% 18%,rgba(15,169,140,.30),transparent 70%),
    radial-gradient(520px 300px at 88% 76%,rgba(61,240,200,.16),transparent 72%);
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(61,240,200,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(61,240,200,.055) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:28px}
.crumbs a{color:rgba(255,255,255,.72)}
.crumbs a:hover{color:var(--neon)}
.crumbs .sep{color:rgba(61,240,200,.6)}
.crumbs .now{color:var(--neon)}
.hero-grid{display:flex;flex-wrap:wrap;align-items:center;gap:40px}
.hero-copy{flex:1 1 480px;min-width:280px}
.hero-visual{flex:1 1 360px;min-width:280px;position:relative}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:12px;letter-spacing:.6px;
  color:var(--neon);background:rgba(61,240,200,.1);
  border:1px solid rgba(61,240,200,.35);
}
.page-hero h1{
  color:#fff;font-size:40px;line-height:1.25;margin:18px 0 16px;letter-spacing:-.5px;
}
.page-hero h1 em{font-style:normal;color:var(--neon)}
.hero-sub{color:rgba(255,255,255,.76);font-size:17px;max-width:560px}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.82)}
.hero-points svg{flex:0 0 auto;color:var(--neon)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-card);border:1px solid rgba(61,240,200,.28);
  box-shadow:0 0 0 1px rgba(61,240,200,.16),0 0 34px rgba(61,240,200,.18);
}
.hero-tag{
  position:absolute;top:-14px;right:-8px;
  padding:8px 16px;border-radius:999px;font-size:13px;font-weight:700;
  background:var(--accent);color:#3A1602;box-shadow:0 0 22px rgba(255,138,61,.45);
}

/* ---------- generic sections ---------- */
.section{padding:88px 0}
.section.tight{padding:64px 0}
.section-surface{background:var(--surface)}
.section-dark{background:var(--ink-900);color:#fff;position:relative;overflow:hidden}
.section-dark::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 300px at 80% 10%,rgba(15,169,140,.22),transparent 70%);
  pointer-events:none;
}
.section-dark .container{position:relative;z-index:2}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{font-size:28px;letter-spacing:-.2px}
.section-head p{margin-top:12px;color:var(--muted)}
.section-dark .section-head h2{color:#fff}
.section-dark .section-head p{color:rgba(255,255,255,.7)}
.section-kicker{
  display:inline-block;margin-bottom:12px;font-size:12px;letter-spacing:2px;
  color:var(--primary);text-transform:uppercase;font-weight:700;
}
.section-dark .section-kicker{color:var(--neon)}

/* ---------- qa list ---------- */
.qa-list{border-top:1px solid var(--line)}
.qa-item{padding:28px 0;border-bottom:1px dashed var(--line)}
.qa-q{display:flex;gap:12px;align-items:flex-start;font-size:18px;font-weight:700;color:var(--ink-900);line-height:1.6}
.q-badge{
  flex:0 0 auto;width:26px;height:26px;margin-top:3px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(15,169,140,.12);color:var(--primary);
  font-size:13px;font-weight:700;
}
.qa-a{
  margin:14px 0 0 38px;padding:16px 20px;
  background:#EDF4F5;border-left:3px solid var(--primary);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:#2C464E;font-size:15.5px;line-height:1.85;
}
.qa-a strong{color:var(--ink-900)}
.qa-a + .qa-a{margin-top:12px}
.qa-note{margin:12px 0 0 38px;font-size:13.5px;color:var(--muted)}

/* ---------- media row ---------- */
.media-row{display:flex;flex-wrap:wrap;gap:44px;align-items:center}
.media-figure{flex:1 1 400px;min-width:280px}
.media-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-card)}
.media-body{flex:1 1 420px;min-width:280px}
.media-body h3{font-size:22px;margin-bottom:14px}
.media-body p{color:var(--muted);margin-bottom:14px}
.check-list{margin-top:18px;display:grid;gap:12px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text)}
.check-list svg{flex:0 0 auto;margin-top:5px;color:var(--primary)}

/* ---------- tip cards ---------- */
.tip-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}
.tip-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-card);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tip-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--primary)}
.tip-card h3{font-size:17px;margin-bottom:10px}
.tip-card p{color:var(--muted);font-size:15px}
.tip-card.accent{background:#FFF4EC;border-color:#F7D6BE}
.tip-card.accent h3{color:#8A4310}
.tip-card.accent p{color:#93541F}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-900);border-radius:20px;
  padding:54px 48px;color:#fff;
  border:1px solid rgba(61,240,200,.28);
  box-shadow:0 0 0 1px rgba(61,240,200,.14),0 0 40px rgba(61,240,200,.14);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 220px at 88% 20%,rgba(15,169,140,.35),transparent 72%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between}
.cta-inner h2{color:#fff;font-size:26px;margin-bottom:10px}
.cta-inner p{color:rgba(255,255,255,.74);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:0}
.footer-grid{row-gap:34px}
.f-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px}
.site-footer p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62)}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.4px}
.f-links li{margin-bottom:11px}
.f-links a{color:rgba(255,255,255,.66);font-size:14.5px}
.f-links a:hover{color:var(--neon)}
.footer-divider{height:1px;width:56px;background:linear-gradient(90deg,var(--neon),transparent);margin-bottom:16px}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.5);
}
.socials{display:flex;gap:12px}
.socials a{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.7);border:1px solid rgba(255,255,255,.14);
}
.socials a:hover{color:var(--neon);border-color:rgba(61,240,200,.5)}

/* ---------- modal ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:90;display:none;
  background:rgba(4,16,19,.72);padding:24px;
  align-items:center;justify-content:center;
}
.modal-mask.is-open{display:flex}
.modal-card{
  width:100%;max-width:520px;max-height:92vh;overflow:auto;
  background:#fff;border-radius:var(--radius-card);box-shadow:0 24px 60px rgba(4,16,19,.45);
  animation:pop .22s ease;
}
@keyframes pop{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.modal-head{
  background:var(--ink-900);color:#fff;padding:22px 26px;position:relative;
  border-radius:var(--radius-card) var(--radius-card) 0 0;
}
.modal-head h3{color:#fff;font-size:19px}
.modal-head p{color:rgba(255,255,255,.66);font-size:13.5px;margin-top:6px}
.modal-close{
  position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:9px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);color:#fff;
  font-size:18px;line-height:1;cursor:pointer;
}
.modal-close:hover{border-color:var(--neon);color:var(--neon)}
.modal-body{padding:24px 26px 28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:7px;color:var(--ink-900)}
.field input,.field select{
  width:100%;height:46px;padding:0 14px;font-size:15px;color:var(--text);
  border:1px solid var(--line);border-radius:var(--radius-input);background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(15,169,140,.16);
}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);margin:6px 0 18px}
.agree input{width:18px;height:18px;margin-top:3px;accent-color:var(--primary);flex:0 0 auto}
.form-success{display:none;padding:16px 18px;border-radius:12px;background:rgba(15,169,140,.1);border:1px solid rgba(15,169,140,.35);color:#0B6E5C;font-size:14.5px;margin-top:14px}
.form-success.is-on{display:block}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn-sm{display:none}
  .page-hero h1{font-size:34px}
  .section{padding:72px 0}
  .tip-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .brand-text{font-size:15px;max-width:140px;overflow:hidden;text-overflow:ellipsis}
  .page-hero{padding:20px 0 52px}
  .page-hero h1{font-size:27px}
  .hero-sub{font-size:15.5px}
  .hero-visual img{aspect-ratio:4/3}
  .hero-tag{top:-10px;right:6px;font-size:12px;padding:6px 12px}
  .section{padding:52px 0}
  .section-head h2{font-size:22px}
  .qa-q{font-size:16.5px}
  .qa-a{margin-left:0;font-size:15px;padding:14px 16px}
  .qa-note{margin-left:0}
  .cta-band{padding:34px 22px;border-radius:16px}
  .cta-inner h2{font-size:21px}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .media-row{gap:26px}
}