/* roulang page: index */
:root{
  --c-primary:#16506F;
  --c-primary-dark:#103C55;
  --c-primary-light:#E7F0F5;
  --c-sky:#7FB3CE;
  --c-accent:#D97A33;
  --c-bg:#F6F7F5;
  --c-card:#FFFFFF;
  --c-sub:#EEF3F6;
  --c-ink:#12212C;
  --c-text:#566472;
  --c-muted:#8794A1;
  --c-line:#DFE6EA;
  --c-success:#2E8B6B;
  --c-warn:#C2503E;
  --radius-card:16px;
  --radius-card-sm:12px;
  --radius-btn:999px;
  --radius-btn2:10px;
  --radius-input:10px;
  --shadow-card:0 1px 2px rgba(20,40,60,.04),0 8px 24px rgba(23,69,107,.07);
  --shadow-hover:0 2px 4px rgba(20,40,60,.06),0 14px 32px rgba(23,69,107,.12);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,Inter,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.82;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--c-primary-dark);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--c-ink);font-weight:600;letter-spacing:-.01em;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
figure{margin:0;}
::selection{background:rgba(22,80,111,.16);}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15.5px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  text-align:center;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 1px 2px rgba(20,40,60,.08),0 8px 20px rgba(22,80,111,.18);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 2px 4px rgba(20,40,60,.10),0 12px 26px rgba(22,80,111,.26);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 1px 2px rgba(20,40,60,.08),0 8px 20px rgba(217,122,51,.22);}
.btn-accent:hover{background:#c26a28;color:#fff;transform:translateY(-1px);}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:rgba(22,80,111,.06);color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--c-primary);padding:13px 6px;border-radius:var(--radius-btn2);}
.btn-ghost span{border-bottom:1px solid rgba(22,80,111,.45);padding-bottom:2px;transition:border-color .18s ease;}
.btn-ghost:hover span{border-color:var(--c-primary-dark);}
.btn-sm{padding:10px 20px;font-size:14.5px;}
.btn-block{width:100%;}

.text-link{font-size:14.5px;font-weight:600;color:var(--c-primary);border-bottom:1px solid rgba(22,80,111,.35);padding-bottom:2px;}
.text-link:hover{border-color:var(--c-primary);color:var(--c-primary-dark);}

.badge{
  display:inline-block;padding:4px 11px;border-radius:999px;
  background:var(--c-primary-light);color:var(--c-primary-dark);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;line-height:1.6;
}
.badge-accent{background:rgba(217,122,51,.12);color:#a8571b;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--c-line);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:78px;}
.brand{display:flex;flex-direction:column;line-height:1.2;flex:0 0 auto;}
.brand-line1{font-size:18px;font-weight:700;color:var(--c-primary-dark);letter-spacing:-.01em;}
.brand-line2{font-size:12px;font-weight:500;color:var(--c-muted);letter-spacing:.06em;margin-top:2px;}
.brand:hover .brand-line1{color:var(--c-primary);}
.nav-main{display:flex;align-items:center;gap:24px;flex:1 1 auto;justify-content:center;}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--c-text);}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--c-primary);transform:scaleX(0);transform-origin:left center;transition:transform .18s ease;}
.nav-link:hover{color:var(--c-primary-dark);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary-dark);font-weight:600;}
.nav-link.is-active::after{height:2px;transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--c-line);border-radius:10px;background:#fff;color:var(--c-primary-dark);cursor:pointer;align-items:center;justify-content:center;}
.nav-toggle span{display:block;width:16px;height:1.6px;background:var(--c-primary-dark);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--c-primary-dark);}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}
.nav-drawer{display:none;border-top:1px solid var(--c-line);background:#fff;}
.nav-drawer.is-open{display:block;}
.nav-drawer ul{padding:8px 0 16px;}
.nav-drawer li{border-bottom:1px solid var(--c-line);}
.nav-drawer li:last-child{border-bottom:0;}
.nav-drawer a{display:block;padding:14px 0;font-size:15.5px;color:var(--c-text);font-weight:500;}
.nav-drawer a.is-active{color:var(--c-primary-dark);font-weight:600;}
.nav-drawer .drawer-cta{padding:16px 0 4px;border-bottom:0;}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line);}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center right;opacity:.55;}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(246,247,245,.96) 0%,rgba(246,247,245,.90) 46%,rgba(238,243,246,.97) 100%);}
.hero-inner{position:relative;z-index:2;padding-top:88px;padding-bottom:76px;}
.hero-copy{max-width:660px;}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid rgba(22,80,111,.22);background:rgba(255,255,255,.72);color:var(--c-primary-dark);font-size:13px;font-weight:600;}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--c-accent);display:inline-block;}
.hero h1{font-size:clamp(30px,4vw,48px);line-height:1.2;font-weight:700;margin:22px 0 16px;color:var(--c-primary-dark);}
.hero-sub{font-size:17.5px;color:var(--c-text);line-height:1.8;max-width:600px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
.hero-points{display:flex;flex-wrap:wrap;gap:0;margin-top:36px;border-top:1px solid var(--c-line);padding-top:20px;}
.hero-points li{flex:1 1 150px;padding-right:20px;border-right:1px solid var(--c-line);margin-right:20px;min-width:140px;}
.hero-points li:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-points strong{display:block;font-size:16px;font-weight:600;color:var(--c-ink);letter-spacing:-.01em;}
.hero-points span{display:block;font-size:13.5px;color:var(--c-muted);margin-top:2px;line-height:1.6;}
.hero-card{background:#fff;border:1px solid rgba(22,80,111,.18);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:28px;margin-left:16px;}
.hero-card h3{font-size:18px;margin-bottom:6px;}
.hero-card .hero-card-note{font-size:13.5px;color:var(--c-muted);margin-bottom:18px;}
.hero-card-list li{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--c-line);font-size:14.5px;color:var(--c-text);}
.hero-card-list li:last-child{border-bottom:0;}
.hero-card-list b{color:var(--c-ink);font-weight:600;font-variant-numeric:tabular-nums;}
.hero-card-foot{margin-top:20px;padding-top:18px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--c-muted);}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-alt{background:var(--c-card);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-sub{background:var(--c-sub);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{display:block;font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--c-sky);text-transform:uppercase;margin-bottom:12px;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:600;margin-bottom:14px;}
.section-head p{font-size:16.5px;color:var(--c-text);line-height:1.85;}

/* ---------- info strip ---------- */
.strip{display:flex;flex-wrap:wrap;border-top:1px solid var(--c-line);}
.strip-item{flex:1 1 240px;padding:26px 26px 26px 0;border-right:1px solid var(--c-line);margin-right:26px;}
.strip-item:last-child{border-right:0;margin-right:0;padding-right:0;}
.strip-item .num{font-size:13px;font-weight:700;color:var(--c-sky);letter-spacing:.1em;font-variant-numeric:tabular-nums;}
.strip-item h3{font-size:18px;margin:10px 0 6px;}
.strip-item p{font-size:14.5px;color:var(--c-text);line-height:1.75;}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:30px;}
.timeline::before{content:"";position:absolute;left:6px;top:10px;bottom:14px;width:2px;background:var(--c-sky);opacity:.5;}
.tl-item{position:relative;padding-bottom:22px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{content:"";position:absolute;left:-30px;top:22px;width:12px;height:12px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 0 4px rgba(22,80,111,.10);transition:transform .2s ease;}
.tl-item:hover::before{transform:scale(1.18);}
.tl-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card-sm);padding:22px 24px;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.tl-item:hover .tl-card{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(22,80,111,.28);}
.tl-time{font-size:13.5px;font-weight:700;color:var(--c-primary);letter-spacing:.04em;font-variant-numeric:tabular-nums;}
.tl-card h3{font-size:19px;margin:8px 0 8px;}
.tl-card p{font-size:15px;color:var(--c-text);line-height:1.78;}
.tl-person{margin-top:14px;padding-top:12px;border-top:1px solid var(--c-line);font-size:13.5px;color:var(--c-muted);}
.tl-person b{color:var(--c-ink);font-weight:600;}
.tl-item.is-current .tl-card{border-color:rgba(22,80,111,.35);background:linear-gradient(180deg,#fff 0%,#F8FBFC 100%);}

/* ---------- speaker grid ---------- */
.speaker-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease;height:100%;}
.speaker-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.speaker-card img{width:100%;height:180px;object-fit:cover;}
.speaker-body{padding:20px 22px 24px;}
.speaker-body h3{font-size:17.5px;margin-bottom:4px;}
.speaker-title{font-size:13.5px;color:var(--c-sky);font-weight:600;margin-bottom:10px;}
.speaker-body p{font-size:14.5px;color:var(--c-text);line-height:1.75;}

/* ---------- ticket plan ---------- */
.plan{position:relative;display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);padding:30px 28px;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.plan:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.plan.is-featured{border-color:rgba(22,80,111,.42);background:linear-gradient(180deg,#F8FBFC 0%,#fff 60%);}
.plan.is-featured::after{content:"推荐";position:absolute;top:18px;right:18px;background:var(--c-accent);color:#fff;font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;}
.plan h3{font-size:20px;margin-bottom:6px;}
.plan .plan-desc{font-size:14px;color:var(--c-muted);margin-bottom:18px;}
.plan .price{font-size:30px;font-weight:700;color:var(--c-primary-dark);letter-spacing:-.02em;line-height:1.2;}
.plan .price small{font-size:14px;font-weight:500;color:var(--c-muted);letter-spacing:0;margin-left:6px;}
.plan ul{margin:22px 0 26px;padding-top:20px;border-top:1px solid var(--c-line);}
.plan ul li{position:relative;padding-left:24px;font-size:14.8px;color:var(--c-text);line-height:1.7;margin-bottom:11px;}
.plan ul li:last-child{margin-bottom:0;}
.plan ul li::before{content:"";position:absolute;left:0;top:9px;width:12px;height:7px;border-left:2px solid var(--c-success);border-bottom:2px solid var(--c-success);transform:rotate(-45deg);}
.plan .plan-foot{margin-top:auto;}

/* ---------- signup ---------- */
.signup-wrap{display:grid;grid-template-columns:1.35fr .9fr;gap:32px;align-items:start;}
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);padding:34px;box-shadow:var(--shadow-card);}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px;}
.field{display:flex;flex-direction:column;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px;}
.field label .req{color:var(--c-warn);margin-left:4px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--radius-input);
  background:#fff;color:var(--c-ink);font-size:15px;transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,80,111,.12);}
.field .hint{font-size:12.8px;color:var(--c-muted);margin-top:6px;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--c-text);line-height:1.7;}
.check-row input{width:18px;height:18px;margin-top:3px;flex:0 0 auto;accent-color:var(--c-primary);}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden;}
.form-success{margin-top:18px;padding:14px 18px;border:1px solid rgba(46,139,107,.35);background:rgba(46,139,107,.07);border-radius:var(--radius-btn2);font-size:14.5px;color:#1f6b51;}
.contact-card{background:var(--c-primary-light);border:1px solid rgba(22,80,111,.16);border-radius:var(--radius-card);padding:30px 28px;}
.contact-card h3{font-size:19px;margin-bottom:12px;}
.contact-card p{font-size:14.6px;color:var(--c-text);line-height:1.8;}
.contact-list{margin-top:20px;border-top:1px solid rgba(22,80,111,.16);padding-top:18px;}
.contact-list li{display:flex;justify-content:space-between;gap:14px;font-size:14px;color:var(--c-text);padding:8px 0;}
.contact-list li b{color:var(--c-ink);font-weight:600;}
.qr-box{margin-top:22px;display:flex;align-items:center;gap:16px;padding:16px;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card-sm);}
.qr-box img{width:76px;height:76px;border-radius:8px;object-fit:cover;}
.qr-box span{font-size:13.5px;color:var(--c-muted);line-height:1.6;}

/* ---------- news ---------- */
.news-card{display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(22,80,111,.26);}
.news-card .badge{margin-bottom:14px;align-self:flex-start;}
.news-card h3{font-size:18px;line-height:1.5;margin-bottom:10px;}
.news-card h3 a{color:var(--c-ink);}
.news-card h3 a:hover{color:var(--c-primary);}
.news-card p{font-size:14.6px;color:var(--c-text);line-height:1.78;margin-bottom:18px;}
.news-meta{margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--c-muted);font-variant-numeric:tabular-nums;}
.empty-state{background:#fff;border:1px dashed var(--c-line);border-radius:var(--radius-card);padding:52px 28px;text-align:center;}
.empty-state .empty-line{width:44px;height:2px;background:var(--c-sky);display:inline-block;margin-bottom:18px;}
.empty-state p{font-size:15.5px;color:var(--c-text);margin-bottom:20px;}

/* ---------- faq ---------- */
.accordion{border-top:1px solid var(--c-line);background:transparent;margin:0;}
.accordion li{border-bottom:1px solid var(--c-line);}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;font-size:17px;font-weight:600;color:var(--c-ink);
  background:transparent;border:0;
}
.accordion .accordion-title:hover{color:var(--c-primary);}
.accordion .accordion-title .mark{flex:0 0 auto;width:18px;height:18px;position:relative;}
.accordion .accordion-title .mark::before,.accordion .accordion-title .mark::after{content:"";position:absolute;background:var(--c-sky);transition:transform .18s ease,background-color .18s ease;}
.accordion .accordion-title .mark::before{left:0;top:8px;width:18px;height:1.8px;}
.accordion .accordion-title .mark::after{left:8px;top:0;width:1.8px;height:18px;}
.accordion li.is-open .accordion-title .mark::after{transform:scaleY(0);}
.accordion li.is-open .accordion-title{color:var(--c-primary-dark);}
.accordion .accordion-content{display:none;padding:0 40px 22px 4px;font-size:15.6px;color:var(--c-text);line-height:1.85;}
.accordion .accordion-content.is-open{display:block;}

/* ---------- cta band ---------- */
.cta-band{background:var(--c-primary-dark);color:#fff;border-radius:20px;padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15.4px;max-width:620px;margin:0;}
.cta-band .btn-outline{color:#fff;border-color:rgba(255,255,255,.6);}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.10);color:#fff;}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--c-line);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14.4px;color:var(--c-text);line-height:1.8;max-width:320px;}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--c-ink);}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14.4px;color:var(--c-text);}
.footer-col a:hover{color:var(--c-primary);}
.footer-col p{font-size:14.4px;color:var(--c-text);line-height:1.8;}
.footer-bottom{border-top:1px solid var(--c-line);padding:20px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.4px;color:var(--c-muted);}

/* ---------- responsive ---------- */
@media screen and (max-width:1199px){
  .hero-card{margin-left:0;margin-top:36px;}
}
@media screen and (max-width:1023px){
  body{font-size:16.5px;}
  .nav-main{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:72px 0;}
  .section-tight{padding:60px 0;}
  .signup-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .speaker-card img{height:160px;}
}
@media screen and (max-width:768px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .hero-inner{padding-top:64px;padding-bottom:56px;}
  .hero-points li{flex:1 1 46%;border-right:0;margin-right:0;padding:10px 0;border-bottom:1px solid var(--c-line);}
  .hero-points li:last-child{border-bottom:0;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .hero-actions .btn-ghost{width:auto;}
  .form-grid{grid-template-columns:1fr;}
  .strip-item{border-right:0;margin-right:0;padding-right:0;border-bottom:1px solid var(--c-line);padding-bottom:22px;margin-bottom:22px;}
  .strip-item:last-child{border-bottom:0;margin-bottom:0;}
  .cta-band{padding:36px 26px;}
  .timeline{padding-left:24px;}
  .tl-item::before{left:-24px;top:20px;}
  .timeline::before{left:4px;}
}
@media screen and (max-width:520px){
  body{font-size:16px;line-height:1.78;}
  .brand-line1{font-size:16.5px;}
  .brand-line2{font-size:11.4px;letter-spacing:.03em;}
  .nav-wrap{min-height:68px;gap:12px;}
  .hero h1{font-size:29px;}
  .hero-sub{font-size:16px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .form-card{padding:24px 20px;}
  .plan{padding:24px 20px;}
  .news-card{padding:22px;}
  .accordion .accordion-content{padding-right:8px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#16506F;
  --c-primary-dark:#103C55;
  --c-primary-soft:#E7F0F5;
  --c-sky:#7FB3CE;
  --c-accent:#D97A33;
  --c-bg:#F6F7F5;
  --c-card:#FFFFFF;
  --c-sub:#EEF3F6;
  --c-ink:#12212C;
  --c-text-2:#566472;
  --c-text-3:#8794A1;
  --c-line:#DFE6EA;
  --c-ok:#2E8B6B;
  --c-warn:#C2503E;
  --r-card:16px;
  --r-btn:999px;
  --r-input:10px;
  --sh-card:0 1px 2px rgba(20,40,60,.04),0 8px 24px rgba(23,69,107,.07);
  --sh-card-hover:0 2px 4px rgba(20,40,60,.06),0 14px 32px rgba(23,69,107,.12);
  --sp-section:104px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,Inter,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;border-radius:var(--r-card);}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--c-primary-dark);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:-.01em;line-height:1.3;}
h1{font-size:clamp(30px,4vw,48px);line-height:1.2;font-weight:700;}
h2{font-size:clamp(24px,3vw,34px);font-weight:600;}
h3{font-size:21px;font-weight:600;}
h4{font-size:17.5px;font-weight:600;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
strong{font-weight:600;color:var(--c-ink);}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}

.grid-container{max-width:var(--container);padding-left:20px;padding-right:20px;margin:0 auto;}
@media screen and (min-width:1024px){
  .grid-container{padding-left:32px;padding-right:32px;}
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(150%) blur(6px);
  border-bottom:1px solid var(--c-line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:78px;
}
.brand{display:flex;flex-direction:column;line-height:1.15;flex:0 0 auto;}
.brand-line1{
  font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:.02em;
}
.brand-line2{
  font-size:12.5px;font-weight:500;color:var(--c-text-2);letter-spacing:.14em;
}
.brand:hover .brand-line1{color:var(--c-primary);}
.nav-main{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 13px;font-size:15px;font-weight:500;color:var(--c-text-2);
  border-radius:8px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:1px;
  background:currentColor;opacity:0;transform:scaleX(.6);
  transition:opacity .18s ease,transform .18s ease;
}
.nav-link:hover{color:var(--c-primary-dark);background:rgba(22,80,111,.045);}
.nav-link:hover::after{opacity:.5;transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{opacity:1;transform:scaleX(1);background:var(--c-primary);height:2px;}
.header-cta{
  margin-left:14px;flex:0 0 auto;
}
.menu-toggle{
  display:none;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--c-line);border-radius:10px;
  padding:9px 14px;font-size:14px;font-weight:500;color:var(--c-text-2);cursor:pointer;
}
.menu-toggle:hover{border-color:var(--c-sky);color:var(--c-primary);}
.menu-toggle .bars{display:inline-block;width:16px;height:10px;position:relative;}
.menu-toggle .bars::before,.menu-toggle .bars::after{
  content:"";position:absolute;left:0;right:0;height:1.5px;background:currentColor;border-radius:2px;
}
.menu-toggle .bars::before{top:0;}
.menu-toggle .bars::after{bottom:0;}

.mobile-drawer{
  display:none;border-top:1px solid var(--c-line);background:#fff;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer ul{padding:8px 0 16px;}
.mobile-drawer li{border-bottom:1px solid var(--c-line);}
.mobile-drawer li:last-child{border-bottom:0;}
.mobile-drawer a{
  display:block;padding:14px 4px;font-size:15.5px;font-weight:500;color:var(--c-text-2);
}
.mobile-drawer a.is-active{color:var(--c-primary);font-weight:600;}
.mobile-drawer .drawer-cta{padding:16px 0 24px;}
@media screen and (max-width:1023px){
  .nav-main,.header-cta{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-inner{min-height:66px;}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;cursor:pointer;text-align:center;
  font-weight:600;font-size:15px;line-height:1;
  padding:14px 26px;border-radius:var(--r-btn);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(217,122,51,.24);}
.btn-primary:hover{background:#C46B28;color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(217,122,51,.3);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary);border-radius:10px;}
.btn-outline:hover{background:rgba(22,80,111,.06);color:var(--c-primary-dark);}
.btn-ghost{background:transparent;border-color:var(--c-line);color:var(--c-text-2);border-radius:10px;}
.btn-ghost:hover{border-color:var(--c-sky);color:var(--c-primary);}
.btn-block{width:100%;}
.btn-sm{padding:11px 20px;font-size:14px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;
  color:var(--c-primary);border-bottom:1px solid rgba(22,80,111,.35);
  padding-bottom:2px;text-decoration:none;
}
.link-arrow:hover{border-bottom-width:2px;color:var(--c-primary-dark);}

/* ============ 通用板块 ============ */
.section{padding:80px 0;}
.section-tight{padding:60px 0;}
.section-alt{background:var(--c-sub);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.12em;
  color:var(--c-primary);background:var(--c-primary-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.section-head p{color:var(--c-text-2);margin-top:14px;font-size:16.5px;}
.divider{height:1px;background:var(--c-line);border:0;margin:0;}

/* ============ 面包屑 ============ */
.crumb-bar{padding:20px 0 0;}
.crumb{font-size:13.5px;color:var(--c-text-3);display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C3CDD5;}
.crumb .current{color:var(--c-primary);font-weight:600;}

/* ============ Hero ============ */
.cat-hero{
  position:relative;overflow:hidden;
  padding:56px 0 72px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);
}
.cat-hero::after{
  content:"";position:absolute;right:-140px;top:-160px;width:560px;height:560px;
  background:radial-gradient(circle at center,rgba(22,80,111,.055),rgba(22,80,111,0) 68%);
  pointer-events:none;
}
.cat-hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;position:relative;z-index:1;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--c-line);border-radius:999px;
  padding:7px 16px;font-size:13px;font-weight:500;color:var(--c-text-2);
  box-shadow:0 1px 2px rgba(20,40,60,.04);
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--c-ok);display:inline-block;}
.cat-hero h1{margin:22px 0 18px;}
.cat-hero h1 em{
  font-style:normal;color:var(--c-primary);
  background:linear-gradient(180deg,rgba(127,179,206,0) 62%,rgba(127,179,206,.34) 62%);
}
.hero-lead{color:var(--c-text-2);font-size:17px;max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;align-items:center;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:0;margin-top:38px;
  border-top:1px solid var(--c-line);padding-top:22px;
}
.hero-facts .fact{
  flex:1 1 150px;padding-right:22px;margin-right:22px;border-right:1px solid var(--c-line);
}
.hero-facts .fact:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-facts .fact strong{display:block;font-size:19px;font-weight:700;letter-spacing:-.02em;color:var(--c-primary);}
.hero-facts .fact span{font-size:13px;color:var(--c-text-3);}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;border-radius:20px;box-shadow:var(--sh-card-hover);object-fit:cover;aspect-ratio:4/3;
}
.hero-figure .figure-note{
  position:absolute;left:-14px;bottom:24px;background:#fff;border:1px solid var(--c-line);
  border-radius:14px;box-shadow:var(--sh-card);padding:14px 18px;max-width:250px;
}
.hero-figure .figure-note strong{display:block;font-size:14px;color:var(--c-primary);}
.hero-figure .figure-note span{font-size:13px;color:var(--c-text-3);}
@media screen and (max-width:1023px){
  .cat-hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure{order:-1;}
  .hero-figure .figure-note{left:12px;bottom:12px;}
}
@media screen and (max-width:639px){
  .cat-hero{padding:36px 0 52px;}
  .hero-facts{gap:16px;}
  .hero-facts .fact{flex:1 1 100%;border-right:0;padding-right:0;margin-right:0;border-bottom:1px solid var(--c-line);padding-bottom:14px;margin-bottom:0;}
  .hero-facts .fact:last-child{border-bottom:0;padding-bottom:0;}
}

/* ============ 步骤时间线 ============ */
.steps{position:relative;margin-top:8px;}
.steps::before{
  content:"";position:absolute;left:29px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--c-sky),rgba(127,179,206,.25));
}
.step{
  position:relative;display:grid;grid-template-columns:60px 1fr;gap:26px;
  padding:0 0 40px;
}
.step:last-child{padding-bottom:0;}
.step-num{
  position:relative;z-index:1;width:60px;height:60px;border-radius:50%;
  background:#fff;border:2px solid var(--c-sky);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:700;color:var(--c-primary);letter-spacing:-.02em;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover .step-num{border-color:var(--c-primary);box-shadow:0 0 0 8px rgba(127,179,206,.18);transform:translateY(-2px);}
.step-body{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:26px 28px;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.step:hover .step-body{box-shadow:var(--sh-card-hover);transform:translateY(-2px);border-color:rgba(22,80,111,.3);}
.step-body h3{margin-bottom:10px;}
.step-body p{color:var(--c-text-2);font-size:16px;}
.check-list{margin-top:16px;display:grid;gap:10px;}
.check-list li{
  position:relative;padding-left:26px;font-size:15px;color:var(--c-text-2);line-height:1.7;
}
.check-list li::before{
  content:"";position:absolute;left:2px;top:9px;width:9px;height:9px;border-radius:50%;
  background:var(--c-primary-soft);border:2px solid var(--c-sky);
}
@media screen and (max-width:639px){
  .steps::before{left:19px;}
  .step{grid-template-columns:44px 1fr;gap:16px;}
  .step-num{width:44px;height:44px;font-size:16px;}
  .step-body{padding:20px;}
}

/* ============ 对照表 ============ */
.table-wrap{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;
}
.table-scroll{overflow-x:auto;}
table.entry-table{width:100%;border-collapse:collapse;min-width:720px;}
table.entry-table th,table.entry-table td{
  padding:16px 20px;text-align:left;font-size:15px;border-bottom:1px solid var(--c-line);vertical-align:top;
}
table.entry-table thead th{
  background:var(--c-sub);font-weight:600;color:var(--c-ink);font-size:14.5px;letter-spacing:.01em;
}
table.entry-table tbody tr:hover{background:rgba(231,240,245,.5);}
table.entry-table td:first-child{font-weight:600;color:var(--c-primary-dark);white-space:nowrap;}
table.entry-table tbody tr:last-child td{border-bottom:0;}
.tag{
  display:inline-block;font-size:12.5px;font-weight:600;line-height:1;
  padding:6px 12px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);
}
.tag-warm{background:rgba(217,122,51,.12);color:#A85E20;}
.tag-ok{background:rgba(46,139,107,.12);color:var(--c-ok);}
.table-foot{
  padding:16px 20px;background:#FBFCFC;border-top:1px solid var(--c-line);
  font-size:13.5px;color:var(--c-text-3);
}

/* ============ 误区卡 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:26px 28px;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.card:hover{box-shadow:var(--sh-card-hover);transform:translateY(-2px);border-color:rgba(22,80,111,.28);}
.card h4{margin-bottom:10px;}
.card p{color:var(--c-text-2);font-size:15.5px;}
.card .card-index{
  display:inline-block;font-size:13px;font-weight:700;color:var(--c-sky);
  letter-spacing:.14em;margin-bottom:12px;
}
.card-accent{background:linear-gradient(180deg,#fff 0%,#FCFAF7 100%);border-color:rgba(217,122,51,.35);}
@media screen and (max-width:1023px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}
}
@media screen and (max-width:639px){
  .grid-3,.grid-2,.grid-4{grid-template-columns:1fr;}
}

/* ============ 交叉链接 ============ */
.cross-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.cross-card{
  display:block;background:#fff;border:1px solid var(--c-line);border-radius:14px;
  padding:22px 22px 20px;box-shadow:0 1px 2px rgba(20,40,60,.04);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.cross-card:hover{box-shadow:var(--sh-card-hover);transform:translateY(-2px);border-color:rgba(22,80,111,.3);}
.cross-card .cross-tag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--c-sky);letter-spacing:.1em;margin-bottom:10px;
}
.cross-card h4{color:var(--c-ink);margin-bottom:8px;font-size:17px;}
.cross-card p{font-size:14px;color:var(--c-text-3);margin-bottom:14px;line-height:1.7;}
.cross-card .cross-go{font-size:14px;font-weight:600;color:var(--c-primary);}
@media screen and (max-width:1023px){.cross-grid{grid-template-columns:repeat(2,1fr);}}
@media screen and (max-width:639px){.cross-grid{grid-template-columns:1fr;}}

/* ============ FAQ ============ */
.faq-wrap{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:8px 28px;}
.accordion{border:0;background:transparent;margin:0;}
.accordion .accordion-item{border:0 !important;border-bottom:1px solid var(--c-line) !important;background:transparent;}
.accordion .accordion-item:last-child{border-bottom:0 !important;}
.accordion .accordion-title{
  border:0;background:transparent;padding:22px 42px 22px 0;font-size:17px;font-weight:600;color:var(--c-ink);
  transition:color .18s ease;
}
.accordion .accordion-title:hover{background:transparent;color:var(--c-primary);}
.accordion .accordion-title::before{
  content:"";right:6px;top:50%;width:13px;height:13px;margin-top:-7px;
  border-right:1.5px solid var(--c-sky);border-bottom:1.5px solid var(--c-sky);
  transform:rotate(45deg);background:none;transition:transform .18s ease;
}
.accordion .accordion-item.is-active .accordion-title::before{
  transform:rotate(-135deg);border-color:var(--c-primary);
}
.accordion .accordion-content{
  border:0;background:transparent;padding:0 40px 24px 0;color:var(--c-text-2);font-size:15.5px;
}
.accordion .accordion-content p{color:var(--c-text-2);}
@media screen and (max-width:639px){
  .faq-wrap{padding:4px 18px;}
  .accordion .accordion-title{font-size:16px;padding:18px 34px 18px 0;}
  .accordion .accordion-content{padding-right:0;font-size:15px;}
}

/* ============ CTA ============ */
.cta-band{
  background:linear-gradient(135deg,#123E58 0%,#16506F 62%,#1C5F81 100%);
  border-radius:22px;padding:52px 48px;color:#fff;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(255,255,255,.14),rgba(255,255,255,0) 70%);
}
.cta-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center;position:relative;z-index:1;}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.82);font-size:16px;max-width:640px;}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start;}
.cta-band .btn-outline-lite{
  border-radius:10px;border:1px solid rgba(255,255,255,.45);color:#fff;background:transparent;
  padding:14px 24px;font-weight:600;font-size:15px;
}
.cta-band .btn-outline-lite:hover{background:rgba(255,255,255,.12);color:#fff;}
.cta-meta{font-size:13px;color:rgba(255,255,255,.62);}
@media screen and (max-width:1023px){
  .cta-grid{grid-template-columns:1fr;gap:26px;}
  .cta-band{padding:40px 28px;}
}

/* ============ 页脚 ============ */
.site-footer{
  background:#EFF3F5;border-top:1px solid var(--c-line);padding:64px 0 0;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{color:var(--c-text-2);font-size:14.5px;line-height:1.85;max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--c-ink);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14.5px;color:var(--c-text-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-col p{font-size:14.5px;color:var(--c-text-2);line-height:1.85;}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--c-line);padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}
@media screen and (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media screen and (max-width:639px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:44px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* ============ 表单 / 报名 ============ */
.signup-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:start;}
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:32px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--c-ink);}
.field input,.field select,.field textarea{
  width:100%;min-height:46px;padding:11px 14px;border:1px solid var(--c-line);
  border-radius:var(--r-input);background:#FCFDFD;color:var(--c-ink);font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);background:#fff;
  box-shadow:0 0 0 3px rgba(22,80,111,.14);
}
.field .field-hint{font-size:12.5px;color:var(--c-text-3);margin-top:6px;}
.field .field-error{font-size:13px;color:var(--c-warn);margin-top:6px;display:none;}
.field.has-error input{border-color:var(--c-warn);}
.field.has-error .field-error{display:block;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--c-text-2);}
.check-line input{width:18px;height:18px;margin-top:3px;flex:0 0 auto;accent-color:var(--c-primary);}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden;}
.form-note{background:var(--c-primary-soft);border-radius:12px;padding:14px 16px;font-size:13.5px;color:var(--c-primary-dark);margin-top:18px;}
.form-success{
  display:none;background:rgba(46,139,107,.1);border:1px solid rgba(46,139,107,.3);
  color:#206B52;border-radius:12px;padding:14px 16px;font-size:14px;margin-top:18px;
}
@media screen and (max-width:1023px){
  .signup-grid{grid-template-columns:1fr;}
}
@media screen and (max-width:639px){
  .field-row{grid-template-columns:1fr;}
  .form-card{padding:22px;}
}
.side-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:26px 28px;
}
.side-card h4{margin-bottom:14px;}
.side-list{display:grid;gap:14px;}
.side-list li{display:grid;grid-template-columns:88px 1fr;gap:12px;font-size:14.5px;color:var(--c-text-2);}
.side-list li span:first-child{color:var(--c-text-3);}
.side-list li strong{font-weight:600;color:var(--c-ink);}

/* roulang page: article */
:root{
  --c-primary:#16506F;
  --c-primary-dark:#103C55;
  --c-primary-light:#E7F0F5;
  --c-accent:#7FB3CE;
  --c-action:#D97A33;
  --c-action-dark:#BF6524;
  --bg:#F6F7F5;
  --card:#FFFFFF;
  --bg-2:#EEF3F6;
  --ink:#12212C;
  --ink-2:#566472;
  --ink-3:#8794A1;
  --line:#DFE6EA;
  --ok:#2E8B6B;
  --warn:#C2503E;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:10px;
  --sh-1:0 1px 2px rgba(20,40,60,.04), 0 8px 24px rgba(23,69,107,.07);
  --sh-2:0 2px 4px rgba(20,40,60,.06), 0 14px 32px rgba(23,69,107,.12);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Inter,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:16.5px;line-height:1.8;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;background:transparent}
a:hover{color:var(--c-primary-dark)}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;font-weight:600;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit}
table{border-collapse:collapse;width:100%}
.grid-container{max-width:1200px;padding-left:20px;padding-right:20px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0;color:#fff}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:78px}
.brand{display:flex;flex-direction:column;line-height:1.16;padding:8px 0}
.brand-line1{font-size:17px;font-weight:700;color:var(--c-primary);letter-spacing:.02em}
.brand-line2{font-size:12.5px;color:var(--ink-2);letter-spacing:.16em}
.nav-main{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;font-size:15px;color:var(--ink-2);padding:9px 11px;border-radius:8px;transition:color .18s ease,background .18s ease;white-space:nowrap}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-light)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;border-radius:2px;background:var(--c-primary)}
.header-actions{display:flex;align-items:center;gap:12px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;font-size:15px;font-weight:600;padding:12px 22px;border:1px solid transparent;cursor:pointer;line-height:1;transition:all .2s ease;text-align:center}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(16,60,85,.22)}
.btn-action{background:var(--c-action);color:#fff}
.btn-action:hover{background:var(--c-action-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(191,101,36,.24)}
.btn-line{background:#fff;border-color:var(--line);color:var(--c-primary)}
.btn-line:hover{border-color:var(--c-primary);background:rgba(22,80,111,.06);color:var(--c-primary);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;color:var(--c-primary);border-bottom:1px solid rgba(22,80,111,.4);padding-bottom:2px;transition:all .18s ease}
.btn-text:hover{border-bottom-color:var(--c-primary);color:var(--c-primary-dark)}
.nav-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--c-primary);cursor:pointer}
.nav-toggle:hover{border-color:var(--c-primary);background:var(--c-primary-light)}

/* ---------- mobile drawer ---------- */
.drawer-overlay{position:fixed;inset:0;background:rgba(18,33,44,.36);opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:90}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);background:#fff;border-left:1px solid var(--line);transform:translateX(102%);transition:transform .28s ease;z-index:100;padding:24px 22px;overflow-y:auto}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-head span{font-size:13px;letter-spacing:.14em;color:var(--ink-3)}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--line);background:#fff;color:var(--ink-2);cursor:pointer}
.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary)}
.drawer-link{display:block;padding:15px 2px;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink)}
.drawer-link:hover{color:var(--c-primary)}
.drawer-link.is-active{color:var(--c-primary);font-weight:600}
.drawer-cta{margin-top:22px}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:var(--bg-2);border-bottom:1px solid var(--line)}
.crumb-bar .grid-container{padding-top:15px;padding-bottom:15px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-3)}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .sep{color:var(--line)}
.crumbs .current{color:var(--c-primary);font-weight:500}

/* ---------- article ---------- */
.article-wrap{padding:52px 0 0}
.article-head .badge{margin-bottom:18px}
.badge{display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.03em;color:var(--c-primary);background:var(--c-primary-light);padding:5px 13px;border-radius:999px}
.badge-accent{color:#8a4a14;background:#FBEEE2}
.article-title{font-size:clamp(28px,3.6vw,42px);line-height:1.28;font-weight:700;letter-spacing:-.015em}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line);font-size:13.5px;color:var(--ink-3)}
.article-meta b{color:var(--c-primary);font-weight:600;font-variant-numeric:tabular-nums}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.article-hero{margin:28px 0 6px;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--card)}
.article-hero img{width:100%;height:clamp(200px,30vw,360px);object-fit:cover}
.article-hero figcaption{font-size:13px;color:var(--ink-3);text-align:center;padding:12px 16px;background:var(--card)}

.article-body{max-width:780px;margin-top:34px;font-size:17px;line-height:1.85;color:var(--ink)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{font-size:clamp(22px,2.4vw,27px);font-weight:600;line-height:1.35;margin:48px 0 16px;padding-left:14px;border-left:3px solid var(--c-primary);scroll-margin-top:104px}
.article-body h3{font-size:20px;font-weight:600;margin:34px 0 12px;scroll-margin-top:104px}
.article-body h4{font-size:17.5px;font-weight:600;margin:26px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:2px}
.article-body ul li,.article-body ol li{position:relative;padding-left:20px;margin-bottom:.6em;color:var(--ink)}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li}
.article-body ol li::before{content:counter(li);position:absolute;left:0;top:.1em;font-size:13px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums}
.article-body blockquote{margin:0 0 1.4em;padding:18px 22px;border-left:3px solid var(--c-primary);background:var(--bg-2);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--ink-2);font-size:16px}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);border:1px solid var(--line);margin:8px 0}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(22,80,111,.35)}
.article-body a:hover{border-bottom-color:var(--c-primary);color:var(--c-primary-dark)}
.article-body table{margin:0 0 1.5em;font-size:15px;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden}
.article-body thead th{background:var(--bg-2);font-weight:600;color:var(--ink)}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.article-body tbody tr:nth-child(even){background:#FBFCFD}
.article-body pre{margin:0 0 1.5em;padding:18px;background:#F1F5F8;border:1px solid var(--line);border-radius:var(--r-sm);overflow-x:auto;font-size:14px;line-height:1.7}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;font-size:14px;background:#F1F5F8;border:1px solid var(--line);border-radius:6px;padding:1px 6px}
.article-body pre code{background:transparent;border:0;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0}

.empty-state{max-width:780px;margin-top:40px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:48px 32px;text-align:center;box-shadow:var(--sh-1)}
.empty-state .empty-icon{font-size:30px;color:var(--c-accent);margin-bottom:14px}
.empty-state h2{font-size:24px;margin-bottom:12px;border:0;padding:0}
.empty-state p{color:var(--ink-2);font-size:15.5px;margin-bottom:24px}

.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:44px;padding-top:24px;border-top:1px solid var(--line)}
.tag-label{font-size:13px;color:var(--ink-3);letter-spacing:.04em}
.tag{font-size:13px;padding:6px 14px;border-radius:999px;background:var(--bg-2);color:var(--ink-2);border:1px solid transparent;transition:all .18s ease}
.tag:hover{background:var(--c-primary-light);color:var(--c-primary);border-color:rgba(22,80,111,.22)}
.back-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ---------- toc ---------- */
.toc-card{position:sticky;top:104px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);padding:20px 18px;box-shadow:var(--sh-1)}
.toc-title{font-size:12.5px;letter-spacing:.16em;color:var(--ink-3);margin-bottom:12px}
.toc-list a{display:block;font-size:14px;color:var(--ink-2);padding:8px 12px;border-left:2px solid transparent;border-radius:0 8px 8px 0;transition:all .16s ease;line-height:1.55}
.toc-list a:hover{color:var(--c-primary);background:var(--c-primary-light)}
.toc-list a.is-active{color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary);background:var(--c-primary-light)}

/* ---------- sections ---------- */
.section{margin-top:68px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.section-head h2{font-size:clamp(20px,2.4vw,27px)}
.section-head p{font-size:14px;color:var(--ink-3);margin-top:8px}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(22,80,111,.3)}
.rel-card img{width:100%;height:150px;object-fit:cover}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.rel-body h3{font-size:16.5px;line-height:1.5;margin:12px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body p{font-size:14px;color:var(--ink-2);line-height:1.72;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-more{margin-top: auto;padding-top:14px;font-size:13.5px;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}

.cta-strip{margin-top:68px;padding:34px clamp(20px,4vw,42px);border:1px solid rgba(22,80,111,.26);border-radius:var(--r-lg);background:#fff;box-shadow:var(--sh-1);display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-strip h2{font-size:clamp(19px,2.2vw,23px)}
.cta-strip p{color:var(--ink-2);font-size:15px;margin-top:8px;max-width:580px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- faq ---------- */
.faq-wrap{margin-top:68px;padding-bottom:8px}
.faq-title{font-size:clamp(20px,2.4vw,26px);margin-bottom:6px}
.faq-sub{font-size:14.5px;color:var(--ink-3);margin-bottom:20px}
.accordion{border:0;background:transparent}
.accordion-item{border:0;border-top:1px solid var(--line);background:transparent}
.accordion-item:last-child{border-bottom:1px solid var(--line)}
.accordion-title{position:relative;display:block;padding:20px 44px 20px 0;font-size:17px;font-weight:600;color:var(--ink);background:transparent;border:0;line-height:1.6}
.accordion-title:hover{color:var(--c-primary)}
.accordion-title::before{content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);margin:0;font-size:18px;font-weight:400;color:var(--c-primary);border:0;line-height:1}
.accordion-item.is-active .accordion-title::before{content:"−"}
.accordion-item.is-active .accordion-title{color:var(--c-primary)}
.accordion-content{padding:0 40px 22px 0;border:0;background:transparent;color:var(--ink-2);font-size:15.5px;line-height:1.8}
.accordion-content p{margin:0 0 .8em}
.accordion-content p:last-child{margin-bottom:0}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:76px;padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--ink-2);line-height:1.85;max-width:330px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink)}
.footer-col ul li{margin-bottom:11px}
.footer-col a{font-size:14px;color:var(--ink-2);transition:color .16s ease}
.footer-col a:hover{color:var(--c-primary)}
.footer-col p{font-size:14px;color:var(--ink-2);line-height:1.95}
.footer-bottom{margin-top:46px;border-top:1px solid var(--line);padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--ink-3)}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-main{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn{display:none}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .article-body{max-width:100%}
}
@media (max-width:639px){
  body{font-size:16px}
  .article-wrap{padding:36px 0 0}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-strip{padding:26px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .article-body h2{margin-top:38px}
  .article-body th,.article-body td{padding:10px}
  .section,.cta-strip,.faq-wrap{margin-top:52px}
}

/* roulang page: category2 */
:root{
  --brand:#16506F;
  --brand-dark:#103C55;
  --brand-light:#E7F0F5;
  --sky:#7FB3CE;
  --action:#D97A33;
  --action-dark:#C06A28;
  --bg:#F6F7F5;
  --card:#FFFFFF;
  --bg-2:#EEF3F6;
  --ink:#12212C;
  --muted:#566472;
  --weak:#8794A1;
  --line:#DFE6EA;
  --ok:#2E8B6B;
  --warn:#C2503E;
  --r-card:16px;
  --r-card-sm:12px;
  --r-btn:999px;
  --r-input:10px;
  --sh-card:0 1px 2px rgba(20,40,60,.04), 0 8px 24px rgba(23,69,107,.07);
  --sh-hover:0 2px 4px rgba(20,40,60,.06), 0 14px 32px rgba(23,69,107,.12);
  --maxw:1200px;
  --ease:200ms ease;
  --font: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC", system-ui, -apple-system, "Segoe UI", Inter, Arial, sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease), border-color var(--ease), background-color var(--ease);}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-0.01em;font-weight:600;line-height:1.3;}
h1{font-size:clamp(30px,4vw,48px);line-height:1.2;font-weight:700;}
h2{font-size:clamp(24px,3vw,34px);}
h3{font-size:21px;}
h4{font-size:17.5px;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.grid-container{max-width:var(--maxw);padding-left:20px;padding-right:20px;}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;min-height:82px;}
.brand{display:inline-flex;flex-direction:column;line-height:1.15;text-decoration:none;margin-right:auto;}
.brand-line1{font-size:15.5px;font-weight:700;color:var(--brand);letter-spacing:.02em;}
.brand-line2{font-size:12.5px;color:var(--muted);letter-spacing:.06em;font-weight:500;}
.brand:hover .brand-line1{color:var(--brand-dark);}
.nav-main{display:flex;align-items:center;gap:2px;}
.nav-link{
  position:relative;
  padding:9px 13px;
  font-size:15px;
  color:var(--muted);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:1px;
  background:var(--brand);opacity:0;transform:scaleX(.6);
  transition:opacity var(--ease), transform var(--ease);
}
.nav-link:hover{color:var(--brand);background:var(--brand-light);}
.nav-link:hover::after{opacity:.5;transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{opacity:1;transform:scaleX(1);height:2px;bottom:1px;}
.header-actions{display:flex;align-items:center;gap:10px;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  position:relative;
  cursor:pointer;
  padding:0;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:1.7px;background:var(--ink);border-radius:2px;
  transition:transform var(--ease), opacity var(--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[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);}

.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:min(86vw,340px);
  background:#fff;
  border-left:1px solid var(--line);
  box-shadow:-14px 0 40px rgba(16,60,85,.14);
  transform:translateX(103%);
  transition:transform 260ms ease;
  z-index:90;
  padding:92px 22px 32px;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer .drawer-title{font-size:12.5px;color:var(--weak);letter-spacing:.14em;margin-bottom:8px;}
.nav-drawer a{
  display:block;padding:14px 2px;font-size:15.5px;color:var(--muted);
  border-bottom:1px solid var(--line);
}
.nav-drawer a.is-active{color:var(--brand);font-weight:600;}
.nav-drawer a:hover{color:var(--brand);}
.nav-drawer .drawer-cta{margin-top:22px;border-bottom:none;}
body.nav-open{overflow:hidden;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--ease), box-shadow var(--ease), background-color var(--ease), color var(--ease), border-color var(--ease);
  text-align:center;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(22,80,111,.18);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(16,60,85,.24);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:transparent;color:var(--brand);border-color:rgba(22,80,111,.45);border-radius:10px;}
.btn-outline:hover{background:rgba(22,80,111,.06);color:var(--brand-dark);border-color:var(--brand);}
.btn-text{
  background:none;border:none;padding:6px 0;color:var(--brand);font-weight:600;
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
}
.btn-text:hover{color:var(--brand-dark);text-decoration-thickness:2px;}
.btn-sm{padding:11px 18px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- Hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.page-hero__veil{
  position:absolute;inset:0;
  background:linear-gradient(96deg, rgba(246,247,245,.97) 0%, rgba(246,247,245,.92) 46%, rgba(231,240,245,.62) 100%);
}
.page-hero__inner{position:relative;padding:74px 0 78px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--weak);margin-bottom:22px;}
.crumbs a{color:var(--weak);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:#C4CFD6;}
.crumbs .current{color:var(--brand);font-weight:600;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.08em;font-weight:600;
  color:var(--brand);background:var(--brand-light);
  border:1px solid rgba(22,80,111,.14);
  padding:6px 14px;border-radius:999px;margin-bottom:20px;
}
.hero-title{max-width:20em;margin-bottom:18px;}
.hero-lead{max-width:60ch;color:var(--muted);font-size:17px;line-height:1.85;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-bottom:34px;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:0 28px;
  border-top:1px solid var(--line);padding-top:20px;
}
.hero-facts li{position:relative;font-size:14px;color:var(--muted);padding-right:0;}
.hero-facts li + li::before{
  content:"";position:absolute;left:-15px;top:50%;transform:translateY(-50%);
  width:1px;height:16px;background:var(--line);
}
.hero-facts strong{color:var(--ink);font-weight:600;}

/* ---------- Sections ---------- */
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section--alt{background:var(--bg-2);}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head .kicker{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand);
  letter-spacing:.1em;margin-bottom:12px;
}
.section-head p{color:var(--muted);margin-top:14px;}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- Feature rows ---------- */
.feature-row{margin-bottom:84px;}
.feature-row:last-child{margin-bottom:0;}
.feature-media{position:relative;margin-bottom:24px;}
.feature-media img{
  width:100%;border-radius:var(--r-card);border:1px solid var(--line);
  box-shadow:var(--sh-card);
}
.feature-index{
  position:absolute;left:-6px;top:-14px;
  font-size:52px;font-weight:700;line-height:1;
  color:rgba(22,80,111,.10);letter-spacing:-0.03em;
}
.feature-copy h3{margin-bottom:12px;}
.feature-copy > p{color:var(--muted);margin-bottom:20px;}
.points li{display:flex;gap:12px;align-items:flex-start;padding:9px 0;border-bottom:1px dashed var(--line);font-size:15.5px;color:var(--muted);}
.points li:last-child{border-bottom:none;}
.points li strong{color:var(--ink);font-weight:600;}
.check{
  flex:0 0 20px;width:20px;height:20px;border-radius:50%;
  background:var(--brand-light);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;margin-top:4px;
}
.check svg{width:11px;height:11px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- Table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-card);}
table.compare{width:100%;min-width:660px;border-collapse:collapse;font-size:15px;}
table.compare caption{
  text-align:left;padding:20px 24px 0;font-size:14px;color:var(--weak);
}
table.compare th,table.compare td{
  padding:15px 24px;text-align:left;border-bottom:1px solid var(--line);
}
table.compare thead th{
  background:var(--bg-2);font-weight:600;color:var(--ink);font-size:14.5px;
  letter-spacing:.02em;white-space:nowrap;
}
table.compare tbody tr:last-child td{border-bottom:none;}
table.compare tbody tr:hover td{background:#FAFCFD;}
table.compare td.yes{color:var(--ok);font-weight:600;}
table.compare td.part{color:var(--action);font-weight:600;}
table.compare td.no{color:var(--weak);}
table.compare td.note{color:var(--muted);}
.table-caption{font-size:13px;color:var(--weak);text-align:center;margin-top:14px;}

/* ---------- Numbered list ---------- */
.flow-list{border-top:1px solid var(--line);}
.flow-item{
  display:grid;grid-template-columns:96px 1fr;gap:28px;
  padding:34px 0;border-bottom:1px solid var(--line);align-items:start;
}
.flow-num{
  font-size:32px;font-weight:700;color:var(--brand);letter-spacing:-0.02em;
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.flow-item h3{margin-bottom:10px;font-size:20px;}
.flow-item p{color:var(--muted);margin:0;}
.flow-item .tag{
  display:inline-block;margin-left:10px;font-size:12px;font-weight:600;
  color:var(--brand);background:var(--brand-light);border-radius:999px;padding:3px 10px;vertical-align:middle;
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:880px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:24px 52px 24px 0;font-size:17px;font-weight:600;color:var(--ink);
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand);line-height:1;
  transition:color var(--ease);
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary::after{content:"−";}
.faq-item summary:hover{color:var(--brand);}
.faq-body{padding:0 40px 26px 0;color:var(--muted);font-size:15.5px;line-height:1.85;}
.faq-body p{margin-bottom:.8em;}

/* ---------- Cross links ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.cross-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);
  transition:transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}
.cross-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(22,80,111,.3);}
.cross-card .idx{font-size:12.5px;font-weight:600;color:var(--weak);letter-spacing:.14em;}
.cross-card h4{margin:10px 0 8px;color:var(--ink);}
.cross-card p{font-size:14px;color:var(--muted);margin:0;}
.cross-card .more{display:inline-block;margin-top:14px;font-size:14px;font-weight:600;color:var(--brand);text-decoration:underline;text-underline-offset:4px;}

/* ---------- CTA / form ---------- */
.cta-band{
  background:linear-gradient(180deg,#FFFFFF 0%, #EEF3F6 100%);
  border:1px solid var(--line);border-radius:20px;
  padding:48px;box-shadow:var(--sh-card);
}
.cta-band h2{margin-bottom:14px;}
.cta-band .lead{color:var(--muted);max-width:56ch;}
.cta-band .meta{font-size:14px;color:var(--weak);margin-top:18px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field input[type="text"],
.field input[type="email"],
.field input[type="tel"]{
  width:100%;height:48px;padding:0 16px;
  border:1px solid var(--line);border-radius:var(--r-input);
  background:#fff;font-size:15.5px;color:var(--ink);
  transition:border-color var(--ease), box-shadow var(--ease);
}
.field input::placeholder{color:#A9B4BD;}
.field input:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(22,80,111,.14);
}
.field.has-error input{border-color:var(--warn);box-shadow:0 0 0 3px rgba(194,80,62,.12);}
.field .error-text{display:block;font-size:13px;color:var(--warn);margin-top:7px;}
.checkbox-row{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted);margin:4px 0 20px;}
.checkbox-row input{margin-top:5px;}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden;}
.form-note{font-size:13.5px;color:var(--weak);margin-top:14px;}
.form-success{
  display:none;margin-top:18px;padding:14px 18px;border-radius:var(--r-input);
  background:rgba(46,139,107,.1);border:1px solid rgba(46,139,107,.32);
  color:var(--ok);font-size:14.5px;
}
.form-success.is-visible{display:block;}

/* ---------- Footer ---------- */
.site-footer{
  background:#FFFFFF;border-top:1px solid var(--line);
  padding:64px 0 26px;margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{color:var(--muted);font-size:14.5px;max-width:34ch;margin:0;}
.footer-col h4{font-size:14.5px;color:var(--ink);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:var(--muted);font-size:14.5px;}
.footer-col a:hover{color:var(--brand);}
.footer-col p{color:var(--muted);font-size:14.5px;margin:0;line-height:1.9;}
.footer-bottom{
  border-top:1px solid var(--line);padding-top:22px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:var(--weak);
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .section{padding:84px 0;}
  .cross-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .nav-main,.header-actions{display:none;}
  .nav-toggle{display:block;}
  .nav-drawer{display:block;}
  .header-inner{min-height:70px;}
  .page-hero__inner{padding:56px 0 60px;}
  .section{padding:70px 0;}
  .section--tight{padding:56px 0;}
  .feature-row{margin-bottom:60px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
  .flow-item{grid-template-columns:72px 1fr;gap:20px;padding:28px 0;}
  .cta-band{padding:36px 28px;}
}
@media (min-width:1024px){
  .nav-drawer{display:none;}
  .feature-row--reverse .feature-media{order:2;}
  .feature-row--reverse .feature-copy{order:1;}
}
@media (max-width:639px){
  body{font-size:16px;}
  .container,.grid-container{padding-left:16px;padding-right:16px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .hero-facts{flex-direction:column;gap:12px;}
  .hero-facts li + li::before{display:none;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:34px;}
  .cross-grid{grid-template-columns:1fr;}
  .flow-item{grid-template-columns:1fr;gap:10px;}
  .flow-num{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{padding:28px 20px;}
  .table-caption{text-align:left;}
  .faq-item summary{padding:20px 44px 20px 0;font-size:16px;}
  .faq-body{padding-right:12px;}
}

/* roulang page: category3 */
:root{
  --brand:#16506F;
  --brand-dark:#103C55;
  --brand-light:#E7F0F5;
  --sky:#7FB3CE;
  --action:#D97A33;
  --bg:#F6F7F5;
  --card:#FFFFFF;
  --sub-bg:#EEF3F6;
  --ink:#12212C;
  --ink-2:#566472;
  --ink-3:#8794A1;
  --line:#DFE6EA;
  --ok:#2E8B6B;
  --warn:#C2503E;
  --r-card:16px;
  --r-soft:14px;
  --r-input:10px;
  --shadow-1:0 1px 2px rgba(20,40,60,.04),0 8px 24px rgba(23,69,107,.07);
  --shadow-2:0 2px 4px rgba(20,40,60,.06),0 14px 32px rgba(23,69,107,.12);
  --maxw:1200px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  font-weight:400;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;}
h1{font-size:clamp(30px,4vw,48px);line-height:1.2;font-weight:700;}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:600;}
h3{font-size:21px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
strong{font-weight:600;color:var(--ink);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

/* ---------- 容器 ---------- */
.grid-container{width:100%;max-width:var(--maxw);margin:0 auto;padding-left:20px;padding-right:20px;}
.sec{padding:88px 0;}
.sec--tight{padding:64px 0;}
.sec--alt{background:var(--sub-bg);}
.sec--white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{margin-bottom:14px;}
.sec-head p{color:var(--ink-2);font-size:16.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--sky);border-radius:2px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:80px;
}
.brand{display:inline-flex;flex-direction:column;line-height:1.15;flex:0 0 auto;}
.brand-line1{font-size:19px;font-weight:700;color:var(--brand);letter-spacing:.01em;}
.brand-line2{font-size:12.5px;font-weight:500;color:var(--ink-2);letter-spacing:.14em;margin-top:3px;}
.brand:hover .brand-line1{color:var(--brand-dark);}
.nav-main{display:flex;align-items:center;gap:2px;flex-wrap:wrap;}
.nav-link{
  position:relative;display:inline-block;padding:9px 13px;
  font-size:15px;color:var(--ink-2);border-radius:8px;
  transition:color .18s ease,background-color .18s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:rgba(22,80,111,.05);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;
  height:2px;background:var(--brand);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:#fff;color:var(--brand);font-size:17px;cursor:pointer;
}
.nav-toggle:hover{background:var(--brand-light);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-size:15.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(22,80,111,.24);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:rgba(22,80,111,.06);color:var(--brand-dark);}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--line);}
.btn-outline:hover{border-color:var(--brand);background:rgba(22,80,111,.05);}
.btn-light{background:#fff;color:var(--brand);}
.btn-light:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px);}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-sm{padding:10px 20px;font-size:14.5px;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand);
  text-decoration:underline;text-underline-offset:4px;
}
.link-more:hover{color:var(--brand-dark);text-decoration-thickness:2px;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:var(--brand-light);color:var(--brand);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge--sky{background:rgba(127,179,206,.16);color:var(--brand-dark);}
.badge--action{background:rgba(217,122,51,.14);color:#A85618;}
.tag{
  display:inline-block;padding:5px 12px;border-radius:999px;
  background:var(--sub-bg);color:var(--ink-2);font-size:13px;
  border:1px solid var(--line);
}

/* ---------- 面包屑 ---------- */
.crumb{padding:20px 0 0;font-size:13.5px;color:var(--ink-3);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--line);}
.crumb a{color:var(--ink-3);}
.crumb a:hover{color:var(--brand);}
.crumb .current{color:var(--brand);font-weight:600;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--sub-bg) 100%);
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(127,179,206,.18),rgba(127,179,206,0) 68%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;
  padding:72px 0 80px;
}
.hero h1{margin:16px 0 18px;}
.hero-lead{font-size:17px;color:var(--ink-2);max-width:560px;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-bottom:34px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;border-radius:20px;border:1px solid var(--line);
  box-shadow:var(--shadow-1);object-fit:cover;aspect-ratio:4/3;
}
.hero-media .float-card{
  position:absolute;left:-18px;bottom:24px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:14px 18px;box-shadow:var(--shadow-2);min-width:190px;
}
.float-card .fc-label{font-size:12.5px;color:var(--ink-3);}
.float-card .fc-value{font-size:18px;font-weight:700;color:var(--brand);letter-spacing:-.02em;font-variant-numeric:tabular-nums;}
.trust-row{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);margin-top:8px;
}
.trust-item{padding:18px 20px 0 0;border-right:1px solid var(--line);}
.trust-item:last-child{border-right:none;}
.trust-item .t-label{font-size:12.5px;color:var(--ink-3);}
.trust-item .t-value{font-size:15.5px;font-weight:600;color:var(--ink);margin-top:2px;}

/* ---------- 双列对照 ---------- */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;}
.panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--shadow-1);height:100%;
}
.panel-head{display:flex;align-items:center;gap:12px;margin-bottom:20px;}
.panel-head .ph-icon{
  width:42px;height:42px;border-radius:12px;background:var(--brand-light);
  color:var(--brand);display:grid;place-items:center;font-size:17px;flex:0 0 auto;
}
.panel-head h3{font-size:19px;}
.panel-note{font-size:14px;color:var(--ink-3);margin-top:6px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--line);
}
.check-list li:last-child{border-bottom:none;padding-bottom:4px;}
.check-list i{color:var(--ok);font-size:14px;margin-top:6px;flex:0 0 auto;}
.check-list .ck-title{font-weight:600;font-size:15.5px;display:block;}
.check-list .ck-desc{font-size:14px;color:var(--ink-2);display:block;margin-top:2px;}

.steps{position:relative;}
.step{position:relative;display:grid;grid-template-columns:52px 1fr;gap:18px;padding-bottom:26px;}
.step:last-child{padding-bottom:0;}
.step:not(:last-child)::before{
  content:"";position:absolute;left:25px;top:52px;bottom:6px;width:2px;
  background:var(--sky);opacity:.55;
}
.step-num{
  width:52px;height:52px;border-radius:50%;
  background:var(--brand);color:#fff;display:grid;place-items:center;
  font-size:19px;font-weight:700;letter-spacing:-.02em;
  transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover .step-num{transform:scale(1.06);box-shadow:0 0 0 8px rgba(127,179,206,.22);}
.step-body h4{margin-bottom:6px;}
.step-body p{font-size:15px;color:var(--ink-2);}
.step-body .step-meta{font-size:13px;color:var(--ink-3);margin-top:8px;}

/* ---------- 表格 ---------- */
.table-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow-x:auto;box-shadow:var(--shadow-1);
}
.spec-table{width:100%;min-width:720px;border-collapse:collapse;}
.spec-table caption{
  text-align:left;padding:22px 24px 0;font-size:14px;color:var(--ink-3);
}
.spec-table th{
  background:var(--sub-bg);color:var(--ink-2);
  font-size:13.5px;font-weight:600;text-align:left;
  padding:15px 22px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.spec-table td{
  padding:18px 22px;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink-2);vertical-align:top;
}
.spec-table tr:last-child td{border-bottom:none;}
.spec-table td:first-child{font-weight:600;color:var(--brand);white-space:nowrap;}
.spec-table .num{font-variant-numeric:tabular-nums;}

/* ---------- 卡片 ---------- */
.obstacle-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(22,80,111,.28);}
.obstacle-grid .card:nth-child(2){transform:translateY(18px);}
.obstacle-grid .card:nth-child(2):hover{transform:translateY(16px);}
.obstacle-grid .card:nth-child(3){transform:translateY(34px);}
.obstacle-grid .card:nth-child(3):hover{transform:translateY(32px);}
.card .c-index{
  font-size:30px;font-weight:700;color:var(--brand-light);
  letter-spacing:-.03em;line-height:1;margin-bottom:14px;
}
.card h3{font-size:18px;margin-bottom:10px;}
.card p{font-size:15px;color:var(--ink-2);}
.card .c-foot{margin-top:18px;font-size:13.5px;color:var(--ink-3);display:flex;align-items:center;gap:8px;}

/* ---------- 交叉链接 ---------- */
.link-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.link-card{
  display:block;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-soft);padding:24px;height:100%;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.link-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(22,80,111,.3);}
.link-card .lc-badge{
  display:inline-block;font-size:12px;font-weight:600;color:var(--brand);
  background:var(--brand-light);border-radius:999px;padding:3px 10px;margin-bottom:14px;
}
.link-card h3{font-size:17px;margin-bottom:8px;color:var(--ink);}
.link-card p{font-size:14px;color:var(--ink-2);margin-bottom:14px;}
.link-card .lc-more{font-size:14px;font-weight:600;color:var(--brand);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;}
.accordion{border:none;background:transparent;margin:0;}
.accordion .accordion-item{border-bottom:1px solid var(--line);}
.accordion .accordion-title{
  font-size:17px;font-weight:600;color:var(--ink);
  padding:22px 44px 22px 0;border:none;background:transparent;line-height:1.5;
}
.accordion .accordion-title:hover,.accordion .accordion-title:focus{
  background:transparent;color:var(--brand);
}
.accordion .accordion-title::before{
  content:"+";right:10px;left:auto;margin-top:-.75em;
  font-size:22px;font-weight:400;color:var(--brand);line-height:1;
}
.accordion .accordion-item.is-active>.accordion-title::before{content:"−";}
.accordion .accordion-content{
  border:none;background:transparent;padding:0 60px 24px 0;
  font-size:15.5px;color:var(--ink-2);line-height:1.8;
}

/* ---------- CTA 区 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand);border-radius:22px;
  padding:48px;display:grid;grid-template-columns:1.45fr 1fr;gap:36px;
  align-items:center;color:#fff;box-shadow:var(--shadow-1);
}
.cta-band::after{
  content:"";position:absolute;right:-120px;bottom:-160px;
  width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle at 40% 40%,rgba(255,255,255,.10),rgba(255,255,255,0) 70%);
  pointer-events:none;
}
.cta-band h2{color:#fff;margin-bottom:14px;position:relative;z-index:2;}
.cta-band p{color:rgba(255,255,255,.86);font-size:16px;position:relative;z-index:2;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;position:relative;z-index:2;}
.cta-side{
  position:relative;z-index:2;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);
  border-radius:var(--r-soft);padding:24px;
}
.cta-side h4{color:#fff;font-size:15.5px;margin-bottom:12px;}
.cta-side li{
  display:flex;justify-content:space-between;gap:12px;
  font-size:14px;color:rgba(255,255,255,.88);
  padding:9px 0;border-bottom:1px solid rgba(255,255,255,.18);
}
.cta-side li:last-child{border-bottom:none;padding-bottom:0;}
.cta-side li span:last-child{font-weight:600;color:#fff;font-variant-numeric:tabular-nums;}

/* ---------- 帮助条 ---------- */
.help-strip{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:20px;background:#fff;border:1px solid var(--line);border-left:3px solid var(--action);
  border-radius:var(--r-soft);padding:24px 28px;box-shadow:var(--shadow-1);
}
.help-strip .hs-text h3{font-size:17px;margin-bottom:6px;}
.help-strip .hs-text p{font-size:14.5px;color:var(--ink-2);}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand p{font-size:14.5px;color:var(--ink-2);margin-top:16px;max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:16px;}
.footer-col ul{display:block;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14.5px;color:var(--ink-2);}
.footer-col a:hover{color:var(--brand);}
.footer-col p{font-size:14.5px;color:var(--ink-2);line-height:1.9;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);margin-top:44px;padding-top:22px;
  font-size:13px;color:var(--ink-3);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .hero-grid{gap:40px;}
}
@media screen and (max-width:1023px){
  .sec{padding:64px 0;}
  .sec--tight{padding:52px 0;}
  .nav-toggle{display:inline-flex;}
  .nav-main{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-2);padding:10px 20px 18px;
  }
  .nav-main.is-open{display:flex;}
  .nav-link{padding:14px 4px;border-bottom:1px solid var(--line);border-radius:0;font-size:15.5px;}
  .nav-link:hover{background:transparent;}
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{color:var(--brand);}
  .header-actions .btn{display:none;}
  .hero-grid{grid-template-columns:1fr;padding:48px 0 56px;}
  .hero-lead{max-width:none;}
  .hero-media .float-card{left:auto;right:16px;bottom:16px;}
  .trust-row{grid-template-columns:repeat(2,1fr);}
  .trust-item{padding:16px 18px 16px 0;border-bottom:1px solid var(--line);}
  .trust-item:nth-child(2n){border-right:none;}
  .trust-item:nth-last-child(-n+2){border-bottom:none;}
  .duo{grid-template-columns:1fr;gap:24px;}
  .obstacle-grid{grid-template-columns:repeat(2,1fr);}
  .obstacle-grid .card:nth-child(2),
  .obstacle-grid .card:nth-child(3){transform:none;}
  .obstacle-grid .card:nth-child(2):hover,
  .obstacle-grid .card:nth-child(3):hover{transform:translateY(-2px);}
  .link-grid{grid-template-columns:repeat(2,1fr);}
  .cta-band{grid-template-columns:1fr;padding:36px 28px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
}
@media screen and (max-width:639px){
  body{font-size:16px;}
  .sec{padding:52px 0;}
  .sec--tight{padding:44px 0;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .header-inner{min-height:70px;}
  .brand-line1{font-size:17.5px;}
  .brand-line2{font-size:11.5px;letter-spacing:.1em;}
  .hero-grid{padding:36px 0 44px;gap:28px;}
  .hero-cta .btn{width:100%;}
  .hero-cta{gap:12px;}
  .hero-media .float-card{position:static;margin-top:16px;box-shadow:var(--shadow-1);}
  .trust-row{grid-template-columns:1fr;}
  .trust-item{border-right:none;padding:14px 0;}
  .trust-item:nth-last-child(-n+2){border-bottom:1px solid var(--line);}
  .trust-item:last-child{border-bottom:none;}
  .panel{padding:22px;}
  .obstacle-grid{grid-template-columns:1fr;}
  .link-grid{grid-template-columns:1fr;}
  .step{grid-template-columns:44px 1fr;gap:14px;}
  .step-num{width:44px;height:44px;font-size:16px;}
  .step:not(:last-child)::before{left:21px;top:44px;}
  .card{padding:22px;}
  .accordion .accordion-title{font-size:16px;padding-right:38px;}
  .accordion .accordion-content{padding-right:12px;}
  .cta-band{padding:28px 20px;border-radius:16px;}
  .cta-actions .btn{width:100%;}
  .help-strip{padding:20px;}
  .help-strip .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:6px;}
}

/* roulang page: category4 */
:root{
  --brand:#16506F;
  --brand-deep:#103C55;
  --brand-soft:#E7F0F5;
  --sky:#7FB3CE;
  --action:#D97A33;
  --bg:#F6F7F5;
  --card:#FFFFFF;
  --sub-bg:#EEF3F6;
  --ink:#12212C;
  --ink-2:#566472;
  --ink-3:#8794A1;
  --line:#DFE6EA;
  --ok:#2E8B6B;
  --warn:#C2503E;
  --r-card:16px;
  --r-card-sm:12px;
  --r-input:10px;
  --shadow-card:0 1px 2px rgba(20,40,60,.04), 0 8px 24px rgba(23,69,107,.07);
  --shadow-hover:0 2px 4px rgba(20,40,60,.06), 0 14px 32px rgba(23,69,107,.12);
  --ct-max:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Inter,Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  letter-spacing:0;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--brand-deep);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--ink);}
h1{font-size:clamp(30px,4vw,48px);line-height:1.2;font-weight:700;}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:600;}
h3{font-size:21px;line-height:1.45;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.grid-container{max-width:var(--ct-max);padding-left:20px;padding-right:20px;}
.row-flex{display:flex;flex-wrap:wrap;}
/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:76px;
}
.brand{display:flex;flex-direction:column;line-height:1.15;color:var(--ink);}
.brand-line1{font-size:19px;font-weight:700;letter-spacing:-.02em;color:var(--brand-deep);}
.brand-line2{font-size:12.5px;font-weight:500;color:var(--ink-3);letter-spacing:.06em;}
.brand:hover .brand-line1{color:var(--brand);}
.nav-main{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;
  font-size:15px;color:var(--ink-2);font-weight:500;
  padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--brand-deep);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-deep);font-weight:600;}
.nav-link.is-active::after{height:2px;transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;align-items:center;gap:8px;
  background:transparent;border:1px solid var(--line);border-radius:999px;
  padding:9px 16px;font-size:14px;color:var(--ink-2);cursor:pointer;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer ul{padding:8px 20px 20px;}
.mobile-drawer li{border-bottom:1px solid var(--line);}
.mobile-drawer li:last-child{border-bottom:0;}
.mobile-drawer a{display:block;padding:14px 0;font-size:15px;color:var(--ink-2);}
.mobile-drawer a.is-active{color:var(--brand-deep);font-weight:600;}
/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:all .2s ease;text-align:center;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(20,40,60,.06),0 8px 20px rgba(23,69,107,.18);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-outline{background:transparent;border-color:rgba(22,80,111,.45);color:var(--brand);border-radius:10px;}
.btn-outline:hover{background:rgba(22,80,111,.06);color:var(--brand-deep);border-color:var(--brand);}
.btn-action{background:var(--action);color:#fff;box-shadow:0 1px 2px rgba(20,40,60,.06),0 8px 20px rgba(217,122,51,.22);}
.btn-action:hover{background:#c46a28;color:#fff;transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.text-link{
  display:inline-block;font-size:15px;font-weight:600;color:var(--brand);
  border-bottom:1px solid rgba(22,80,111,.4);padding-bottom:3px;
  transition:border-color .18s ease,color .18s ease;
}
.text-link:hover{border-bottom:2px solid var(--brand-deep);color:var(--brand-deep);}
/* ---------- 徽章与标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  padding:5px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);
}
.badge-warm{background:rgba(217,122,51,.12);color:#a95c1f;}
.tag{
  display:inline-block;font-size:13px;color:var(--ink-2);
  background:var(--sub-bg);border-radius:999px;padding:6px 14px;margin:0 8px 8px 0;
  transition:background-color .18s ease,color .18s ease;
}
.tag:hover{background:var(--brand-soft);color:var(--brand-deep);}
/* ---------- 面包屑 ---------- */
.breadcrumb{
  font-size:13.5px;color:var(--ink-3);
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:18px 0 0;
}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#c3ccd4;}
.breadcrumb .current{color:var(--brand);font-weight:600;}
/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(90deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.82) 55%,rgba(246,247,245,.72) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero-inner{padding:34px 0 64px;}
.page-hero h1{max-width:16em;margin-top:22px;}
.page-hero .lead{
  max-width:44em;margin-top:20px;font-size:17px;line-height:1.85;color:var(--ink-2);
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:14px 34px;margin-top:30px;
  padding-top:22px;border-top:1px solid var(--line);
}
.hero-meta div{font-size:14px;color:var(--ink-2);}
.hero-meta strong{display:block;font-size:20px;font-weight:600;color:var(--brand-deep);letter-spacing:-.02em;}
/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--sub-bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:44em;margin-bottom:42px;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--ink-2);font-size:16px;margin:0;}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.16em;
  color:var(--sky);text-transform:uppercase;margin-bottom:12px;
}
/* ---------- 快捷定位 ---------- */
.quick-nav{
  display:flex;flex-wrap:wrap;gap:10px;
  padding:20px 0;
}
.quick-nav a{
  font-size:14px;font-weight:600;color:var(--brand-deep);
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:9px 18px;transition:all .18s ease;
}
.quick-nav a:hover{border-color:rgba(22,80,111,.4);background:var(--brand-soft);transform:translateY(-1px);}
/* ---------- FAQ 手风琴 ---------- */
.faq-wrap{max-width:940px;margin:0 auto;}
.faq-group{margin-bottom:52px;}
.faq-group-head{
  display:flex;align-items:baseline;gap:14px;
  padding-bottom:14px;margin-bottom:6px;border-bottom:1px solid var(--line);
}
.faq-group-head .num{
  font-size:14px;font-weight:700;color:var(--sky);letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
}
.faq-group-head h3{font-size:20px;}
.faq-group-head .tip{margin-left:auto;font-size:13px;color:var(--ink-3);}
.faq-accordion{background:transparent;border:0;margin:0;}
.faq-accordion .accordion-item{
  border:0;border-bottom:1px solid var(--line);background:transparent;
}
.faq-accordion .accordion-item:last-child{border-bottom:0;}
.faq-accordion[data-accordion] .accordion-title{
  display:block;position:relative;
  background:transparent;border:0;
  padding:20px 52px 20px 0;
  font-size:17px;font-weight:600;line-height:1.55;color:var(--ink);
  transition:color .18s ease;
}
.faq-accordion[data-accordion] .accordion-title:hover{background:transparent;color:var(--brand);}
.faq-accordion[data-accordion] .accordion-title::before{
  content:"+";
  position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand);line-height:1;
  width:auto;height:auto;
}
.faq-accordion[data-accordion] .accordion-item.is-active .accordion-title{color:var(--brand-deep);}
.faq-accordion[data-accordion] .accordion-item.is-active .accordion-title::before{content:"−";}
.faq-accordion[data-accordion] .accordion-content{
  display:none;background:transparent;border:0;
  padding:0 52px 22px 0;color:var(--ink-2);font-size:15.5px;line-height:1.85;
}
.faq-accordion[data-accordion] .accordion-content.is-open{display:block;}
.faq-accordion[data-accordion] .accordion-content p{margin:0 0 .8em;}
.faq-accordion[data-accordion] .accordion-content p:last-child{margin-bottom:0;}
.faq-accordion[data-accordion] .accordion-content ul{margin:.4em 0 .8em;}
.faq-accordion[data-accordion] .accordion-content li{
  position:relative;padding-left:16px;margin-bottom:6px;
}
.faq-accordion[data-accordion] .accordion-content li::before{
  content:"";position:absolute;left:0;top:.75em;
  width:6px;height:6px;border-radius:50%;background:var(--sky);
}
/* ---------- 步骤流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;}
.step{
  position:relative;padding:28px 26px 28px 0;border-top:2px solid var(--line);
}
.step::before{
  content:"";position:absolute;left:0;top:-6px;width:10px;height:10px;border-radius:50%;
  background:var(--brand);transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover::before{transform:scale(1.35);box-shadow:0 0 0 6px rgba(22,80,111,.1);}
.step-num{
  font-size:30px;font-weight:700;color:rgba(22,80,111,.18);
  letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1;margin-bottom:14px;
}
.step h4{margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--ink-2);margin:0;line-height:1.8;}
/* ---------- 帮助 CTA 卡 ---------- */
.help-card{
  display:grid;grid-template-columns:1.35fr 1fr;gap:36px;align-items:center;
  background:#fff;border:1px solid rgba(22,80,111,.3);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);padding:40px;
}
.help-card h3{margin-bottom:12px;}
.help-card p{color:var(--ink-2);margin-bottom:0;font-size:15.5px;}
.help-actions{display:flex;flex-direction:column;gap:14px;}
.help-actions .btn{width:100%;}
.help-actions .note{font-size:13px;color:var(--ink-3);text-align:center;margin:0;}
/* ---------- 分类交叉链接 ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.cross-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.cross-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(22,80,111,.3);}
.cross-card img{width:100%;height:150px;object-fit:cover;}
.cross-body{padding:22px 22px 24px;}
.cross-body h4{margin-bottom:8px;color:var(--brand-deep);}
.cross-body p{font-size:14px;color:var(--ink-2);margin:0 0 14px;line-height:1.75;}
.cross-body .text-link{font-size:14px;}
/* ---------- 页脚 ---------- */
.site-footer{
  background:#fff;border-top:1px solid var(--line);
  padding:72px 0 28px;margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid var(--line);
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;color:var(--ink-2);max-width:26em;margin:0;line-height:1.8;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14.5px;color:var(--ink-2);}
.footer-col ul a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}
.footer-col p{font-size:14px;color:var(--ink-2);line-height:1.9;margin:0;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:24px;font-size:13px;color:var(--ink-3);
}
/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .section{padding:76px 0;}
  .cross-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-col:last-child{grid-column:span 3;}
}
@media screen and (max-width:1023px){
  .nav-main{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-outline{display:none;}
  .header-inner{min-height:68px;}
  .page-hero-inner{padding:24px 0 52px;}
  .help-card{grid-template-columns:1fr;padding:32px;}
}
@media screen and (max-width:767px){
  body{font-size:15.5px;}
  .section{padding:60px 0;}
  .section-tight{padding:48px 0;}
  .section-head{margin-bottom:30px;}
  .faq-group{margin-bottom:40px;}
  .faq-group-head{flex-wrap:wrap;gap:8px;}
  .faq-group-head .tip{margin-left:0;width:100%;}
  .faq-accordion[data-accordion] .accordion-title{padding:17px 40px 17px 0;font-size:16px;}
  .faq-accordion[data-accordion] .accordion-content{padding:0 40px 18px 0;font-size:15px;}
  .cross-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .step{padding:22px 0;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:32px;}
  .footer-col:last-child{grid-column:auto;}
  .site-footer{padding:52px 0 24px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media screen and (max-width:519px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .brand-line1{font-size:17px;}
  .brand-line2{font-size:11.5px;}
  .page-hero h1{font-size:27px;}
  .page-hero .lead{font-size:15.5px;}
  .hero-meta{gap:12px 20px;}
  .hero-meta strong{font-size:18px;}
  .help-card{padding:26px 20px;}
  .btn{padding:13px 20px;font-size:14.5px;}
}

/* roulang page: category5 */
:root{
  --brand:#16506F;
  --brand-dark:#103C55;
  --brand-light:#E7F0F5;
  --sky:#7FB3CE;
  --action:#D97A33;
  --page:#F6F7F5;
  --card:#FFFFFF;
  --sub:#EEF3F6;
  --ink:#12212C;
  --text2:#566472;
  --text3:#8794A1;
  --line:#DFE6EA;
  --ok:#2E8B6B;
  --warn:#C2503E;
  --r-card:16px;
  --r-btn:999px;
  --r-input:10px;
  --shadow:0 1px 2px rgba(20,40,60,.04),0 8px 24px rgba(23,69,107,.07);
  --shadow-h:0 2px 4px rgba(20,40,60,.06),0 14px 32px rgba(23,69,107,.12);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Inter,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.8;
  color:var(--ink);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-dark)}
p{margin:0 0 1.05em}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0 0 .5em;letter-spacing:-.01em;color:var(--ink)}
h1{font-size:clamp(30px,4vw,48px);line-height:1.2;font-weight:700}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:600}
h3{font-size:21px;line-height:1.4;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
button{font-family:inherit}
input,select,textarea{font-family:inherit;font-size:16px}
.grid-container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:640px){.grid-container{padding-left:28px;padding-right:28px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:40;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:78px;
}
.brand{
  display:flex;flex-direction:column;line-height:1.15;text-decoration:none;
  padding:6px 0;
}
.brand-line1{font-size:17px;font-weight:700;color:var(--brand-dark);letter-spacing:.02em}
.brand-line2{font-size:12.5px;font-weight:500;color:var(--text3);letter-spacing:.08em}
.brand:hover .brand-line1{color:var(--brand)}
.nav-main{display:none;align-items:center;gap:2px;flex:1;justify-content:center}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:15px;font-weight:500;color:var(--text2);
  border-radius:8px;
  transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:1px;
  background:var(--brand);opacity:0;transition:opacity .18s ease,transform .18s ease;
  transform:scaleX(.6);
}
.nav-link:hover{color:var(--brand-dark)}
.nav-link:hover::after{opacity:1;transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-dark);font-weight:600}
.nav-link.is-active::after{opacity:1;transform:scaleX(1);height:2px}
.nav-cta{
  display:none;
  padding:10px 20px;
  font-size:14.5px;font-weight:600;
  color:var(--brand);
  border:1px solid var(--brand);
  border-radius:var(--r-btn);
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.nav-cta:hover{background:var(--brand);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow)}
.nav-toggle{
  display:inline-flex;align-items:center;gap:6px;
  background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:9px 14px;font-size:14.5px;color:var(--brand-dark);font-weight:600;
  cursor:pointer;transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.nav-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.mobile-nav{display:none;border-top:1px solid var(--line);padding:10px 0 18px}
.mobile-nav.is-open{display:block}
.mobile-nav a{
  display:block;padding:13px 4px;font-size:15.5px;color:var(--text2);
  border-bottom:1px solid var(--line);
}
.mobile-nav a.is-active{color:var(--brand-dark);font-weight:600}
.mobile-nav .mobile-cta{
  display:inline-block;margin-top:16px;padding:11px 22px;
  border:1px solid var(--brand);border-radius:var(--r-btn);
  color:var(--brand);font-weight:600;border-bottom:1px solid var(--brand);
}
@media(min-width:1024px){
  .nav-main{display:flex}
  .nav-cta{display:inline-block}
  .nav-toggle{display:none}
  .mobile-nav{display:none !important}
}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;font-size:15.5px;font-weight:600;
  border-radius:var(--r-btn);border:1px solid transparent;
  cursor:pointer;transition:all .2s ease;text-align:center;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-h)}
.btn-primary:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-outline{
  background:#fff;color:var(--brand);border-color:var(--brand);border-radius:var(--r-btn);
}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px)}
.btn-outline:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-text{
  background:none;border:none;padding:13px 4px;color:var(--brand);font-weight:600;
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
}
.btn-text:hover{color:var(--brand-dark);text-decoration-thickness:2px}
.btn-text:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.btn-block{width:100%}
.btn-action{background:var(--action);color:#fff;box-shadow:var(--shadow)}
.btn-action:hover{background:#c46a28;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-h)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:var(--brand-light);color:var(--brand);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge--action{background:#FBEDE0;color:#B25F21}
.badge--ok{background:#E6F2ED;color:var(--ok)}
.tag{
  display:inline-block;padding:6px 14px;border-radius:999px;
  background:var(--sub);color:var(--text2);font-size:13px;font-weight:500;
  margin:0 8px 8px 0;
}

/* ============ 面包屑 ============ */
.breadcrumb{padding:22px 0 0;font-size:13.5px;color:var(--text3)}
.breadcrumb a{color:var(--text3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span.sep{margin:0 8px;color:var(--line)}
.breadcrumb .current{color:var(--brand);font-weight:600}

/* ============ Hero ============ */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero__bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.30;
}
.page-hero__mask{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(246,247,245,.97) 0%,rgba(246,247,245,.90) 46%,rgba(231,240,245,.74) 100%);
}
.page-hero .grid-container{position:relative;z-index:2}
.page-hero__body{padding:34px 0 66px;max-width:760px}
.hero-badge{margin-bottom:20px}
.page-hero h1{max-width:16em}
.hero-sub{
  font-size:17.5px;color:var(--text2);max-width:34em;margin:18px 0 28px;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.trust-row{
  display:flex;flex-wrap:wrap;gap:0 28px;
  list-style:none;margin:38px 0 0;padding:22px 0 0;
  border-top:1px solid var(--line);
}
.trust-row li{
  font-size:14px;color:var(--text2);position:relative;padding-left:16px;margin-bottom:8px;
}
.trust-row li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;
  background:var(--sky);
}
.trust-row strong{display:block;color:var(--brand-dark);font-size:15px;font-weight:600}

/* ============ 板块 ============ */
.section{padding:64px 0}
@media(min-width:1024px){.section{padding:92px 0}}
.section--sub{background:var(--sub);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head p{color:var(--text2);font-size:16.5px;margin-bottom:0}
.section-eyebrow{
  display:block;font-size:13px;font-weight:600;letter-spacing:.14em;
  color:var(--sky);text-transform:uppercase;margin-bottom:12px;
}

/* ============ 要点卡片墙 ============ */
.wall-grid{margin-top:-24px}
.wall-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  margin-bottom:24px;
  position:relative;
}
.wall-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-h);border-color:rgba(22,80,111,.3)}
.wall-card__no{
  font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--sky);
  display:block;margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.wall-card h3{font-size:19px;margin-bottom:10px}
.wall-card p{font-size:15.5px;color:var(--text2);margin-bottom:14px}
.wall-card ul{list-style:none;margin:0 0 6px}
.wall-card ul li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--text2);margin-bottom:7px;
}
.wall-card ul li::before{
  content:"";position:absolute;left:2px;top:10px;width:6px;height:6px;
  border-radius:2px;background:var(--brand-light);border:1px solid var(--sky);
}
.wall-card--accent{border-color:rgba(22,80,111,.32)}
.wall-card--accent::after{
  content:"重点";position:absolute;top:0;right:0;
  background:var(--action);color:#fff;font-size:12px;font-weight:600;
  padding:4px 12px;border-radius:0 var(--r-card) 0 12px;
}
@media(min-width:1024px){
  .wall-offset{margin-top:34px}
}

/* ============ 时间线 ============ */
.tl{list-style:none;margin:0;padding:0 0 0 28px;border-left:2px solid var(--sky)}
.tl-item{position:relative;margin-bottom:26px}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-34px;top:24px;
  width:10px;height:10px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 4px var(--brand-light);
  transition:transform .2s ease;
}
.tl-item:hover::before{transform:scale(1.35)}
.tl-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease;
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-h)}
.tl-time{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-light);border-radius:999px;padding:3px 12px;margin-bottom:12px;
}
.tl-card h3{font-size:18px;margin-bottom:8px}
.tl-card p{font-size:15.5px;color:var(--text2);margin:0}

/* ============ 表格 ============ */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:#fff}
.tbl{width:100%;border-collapse:collapse;min-width:520px}
.tbl th{
  background:var(--sub);color:var(--brand-dark);font-size:14.5px;font-weight:600;
  text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.tbl td{
  padding:14px 18px;font-size:15px;color:var(--text2);
  border-bottom:1px solid var(--line);vertical-align:top;
}
.tbl tr:last-child td{border-bottom:none}
.tbl .state-ok{color:var(--ok);font-weight:600}
.tbl .state-warn{color:var(--warn);font-weight:600}

/* ============ 图文说明块 ============ */
.figure-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow);
}
.figure-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.figure-card__body{padding:22px 24px 26px}
.figure-card__body h3{font-size:18px}
.figure-card__body p{font-size:15.5px;color:var(--text2);margin-bottom:0}
.caption{font-size:13px;color:var(--text3);text-align:center;margin-top:10px}

/* ============ 清单卡 ============ */
.check-list{list-style:none;margin:0}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--line);font-size:15.5px;color:var(--text2);
}
.check-list li:last-child{border-bottom:none}
.check-list .ck{
  flex:0 0 auto;width:20px;height:20px;border-radius:6px;
  background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;margin-top:4px;
}
.check-list .ck--warn{background:#FBE9E5;color:var(--warn)}
.check-list strong{color:var(--ink);font-weight:600}

/* ============ FAQ ============ */
.accordion{border:none;background:transparent;border-top:1px solid var(--line)}
.accordion-item{border-bottom:1px solid var(--line);background:transparent}
.accordion-title{
  border:none;background:transparent;
  padding:20px 46px 20px 0;font-size:17px;font-weight:600;color:var(--ink);
  position:relative;line-height:1.55;
  transition:color .18s ease;
}
.accordion-title::before{display:none !important}
.accordion-title::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand);line-height:1;
  transition:transform .18s ease,color .18s ease;
}
.accordion-title:hover{color:var(--brand)}
.accordion-item.is-active .accordion-title{color:var(--brand-dark)}
.accordion-item.is-active .accordion-title::after{content:"−";color:var(--action)}
.accordion-content{
  border:none !important;background:transparent !important;
  padding:0 46px 24px 0 !important;font-size:15.5px;color:var(--text2);
}
.accordion-content p:last-child{margin-bottom:0}

/* ============ 交叉链接 ============ */
.xlink-grid{margin-top:-20px}
.xlink-card{
  display:block;background:var(--card);border:1px solid var(--line);
  border-radius:14px;padding:22px 22px;margin-bottom:20px;
  box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  height:calc(100% - 20px);
}
.xlink-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-h);border-color:rgba(22,80,111,.3)}
.xlink-card h4{font-size:17px;color:var(--brand-dark);margin-bottom:8px}
.xlink-card p{font-size:14.5px;color:var(--text2);margin:0}
.xlink-card .arrow{display:inline-block;margin-top:12px;font-size:14px;font-weight:600;color:var(--brand)}

/* ============ CTA + 表单 ============ */
.cta-band{
  background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:64px 0;
}
.form-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 26px 30px;box-shadow:var(--shadow);
}
.form-row{margin-bottom:16px}
.form-row label{
  display:block;font-size:14px;font-weight:600;color:var(--brand-dark);margin-bottom:7px;
}
.form-row input[type="text"],
.form-row input[type="tel"],
.form-row input[type="email"],
.form-row select,
.form-row textarea{
  width:100%;min-height:46px;padding:11px 14px;
  border:1px solid var(--line);border-radius:var(--r-input);
  background:#fff;color:var(--ink);line-height:1.5;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-row textarea{min-height:96px;resize:vertical}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(22,80,111,.14);
}
.form-check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text2);margin:6px 0 20px}
.form-check input{margin-top:5px;width:16px;height:16px;accent-color:var(--brand)}
.form-note{font-size:13px;color:var(--text3);margin-top:12px;margin-bottom:0}
.form-hint{font-size:13.5px;color:var(--text3);margin-top:-6px;margin-bottom:8px}
.form-error{display:block;font-size:13.5px;color:var(--warn);margin-top:6px;min-height:0}
.success-box{
  display:none;margin-top:18px;padding:14px 16px;border-radius:12px;
  background:#E6F2ED;border:1px solid rgba(46,139,107,.35);color:#1F6A50;font-size:14.5px;
}
.contact-card{
  background:var(--sub);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;
}
.contact-card h3{font-size:19px;margin-bottom:14px}
.contact-card dl{margin:0}
.contact-card dt{font-size:13.5px;color:var(--text3);margin-top:16px}
.contact-card dt:first-child{margin-top:0}
.contact-card dd{margin:4px 0 0;font-size:15.5px;color:var(--ink);font-weight:500}

/* ============ 页脚 ============ */
.site-footer{background:var(--sub);border-top:1px solid var(--line);padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand p{font-size:14.5px;color:var(--text2);margin-top:14px;max-width:30em;line-height:1.75}
.site-footer h4{font-size:15px;color:var(--brand-dark);margin-bottom:14px}
.footer-col ul{list-style:none;margin:0}
.footer-col li{margin-bottom:9px}
.footer-col a{font-size:14.5px;color:var(--text2)}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.footer-col p{font-size:14px;color:var(--text2);line-height:1.9;margin:0}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  margin-top:38px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text3);
}