/* roulang page: index */
:root{
  --c-primary:#16657F;
  --c-primary-700:#0E4C60;
  --c-primary-50:#E8F1F4;
  --c-accent:#E4752B;
  --c-accent-700:#C9611C;
  --c-accent-50:#FDF0E6;
  --c-trust:#2E9E7E;
  --c-ink:#16262E;
  --c-ink-2:#4E6068;
  --c-ink-3:#8A979D;
  --c-line:#E2EAEC;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F4F8F9;
  --c-bg-soft:#FAFCFC;
  --c-danger:#C0392B;
  --sh-1:0 1px 2px rgba(14,60,74,.06);
  --sh-2:0 6px 18px rgba(14,60,74,.08);
  --sh-3:0 14px 36px rgba(14,60,74,.10);
  --r-card:12px;
  --r-btn:8px;
  --r-img:10px;
  --r-modal:16px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.8;
  letter-spacing:0;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img)}
a{color:var(--c-primary);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--c-accent)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;
}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.35;color:var(--c-ink);letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit;font-size:16px}
.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;margin:0 auto}
.section{padding:88px 0;position:relative}
.section--alt{background:var(--c-bg-alt)}
.section--soft{background:var(--c-bg-soft)}
.section--tight{padding:64px 0}
.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-x.grid-margin-x>.cell{margin-left:12px;margin-right:12px}
.num{font-variant-numeric:tabular-nums}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:0;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
  border:1px solid transparent;text-align:center;
}
.btn--primary{background:var(--c-primary);color:#fff}
.btn--primary:hover,.btn--primary:focus{background:var(--c-primary-700);color:#fff}
.btn--accent{background:var(--c-accent);color:#fff}
.btn--accent:hover,.btn--accent:focus{background:var(--c-accent-700);color:#fff}
.btn--ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn--ghost:hover,.btn--ghost:focus{background:var(--c-primary-50);color:var(--c-primary-700)}
.btn--light{background:#fff;color:var(--c-primary-700)}
.btn--light:hover,.btn--light:focus{background:var(--c-primary-50);color:var(--c-primary-700)}
.btn--sm{min-height:40px;padding:0 18px;font-size:14px}
.btn--lg{min-height:52px;padding:0 30px;font-size:16px}
.btn--block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);border-bottom:1px solid transparent}
.link-more:hover{color:var(--c-accent);border-bottom-color:var(--c-accent)}
.link-more svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.5}

/* ===== 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:12px;background:var(--c-primary-50);color:var(--c-primary-700);
  font-size:12px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge--accent{background:var(--c-accent-50);color:var(--c-accent-700)}
.badge--trust{background:rgba(46,158,126,.12);color:#23795F}

/* ===== 页头 ===== */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:0 0 0 rgba(14,60,74,0);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  min-height:72px;gap:16px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand__mark{width:36px;height:36px;flex:0 0 36px;display:block}
.brand__text{font-size:18px;font-weight:700;letter-spacing:0;white-space:nowrap}
.brand__text-a{color:var(--c-ink)}
.brand__text-b{color:var(--c-primary)}
.nav-side{display:flex;align-items:center;gap:4px}
.nav-side--left{justify-content:flex-end}
.nav-side--right{justify-content:flex-start}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-side--left .nav-list{justify-content:flex-end}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;
  font-size:15px;font-weight:500;color:var(--c-ink-2);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:8px;height:2px;
  background:var(--c-accent);transition:left .2s var(--ease),right .2s var(--ease);
}
.nav-link:hover,.nav-link[aria-current="page"]{color:var(--c-primary)}
.nav-link:hover::after,.nav-link[aria-current="page"]::after{left:12px;right:12px}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:var(--r-btn);color:var(--c-ink);margin-left:4px;
}
.nav-toggle:hover{background:var(--c-bg-alt)}
.nav-toggle svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round}
.mobile-panel{
  display:none;border-top:1px solid var(--c-line);background:#fff;
}
.mobile-panel.is-open{display:block}
.mobile-panel ul{border-top:1px solid var(--c-line)}
.mobile-panel li{border-bottom:1px solid var(--c-line)}
.mobile-panel a{
  display:flex;align-items:center;min-height:52px;padding:0 32px;
  font-size:16px;font-weight:500;color:var(--c-ink-2);
}
.mobile-panel a:hover,.mobile-panel a[aria-current="page"]{color:var(--c-primary);background:var(--c-bg-soft)}
.mobile-panel__cta{padding:16px 32px 24px}

/* ===== 首屏 ===== */
.hero{padding:72px 0 80px;background:linear-gradient(180deg,#F7FBFB 0%,#FFFFFF 78%)}
.hero__grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center}
.hero__title{font-size:40px;font-weight:700;line-height:1.3}
.hero__sub{margin-top:20px;font-size:18px;line-height:1.75;color:var(--c-ink-2);max-width:560px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.trust-line{display:flex;align-items:center;gap:10px;margin-top:26px;font-size:14px;color:var(--c-ink-2)}
.trust-line svg{width:20px;height:20px;flex:0 0 20px;stroke:var(--c-trust);fill:none;stroke-width:1.5}
.hero__visual{position:relative}
.hero__visual img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-2)}
.hero-card{
  position:absolute;left:-24px;bottom:-28px;width:290px;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-3);padding:20px 22px;
}
.hero-card__title{font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:12px}
.hero-card ul li{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--c-ink-2);line-height:1.6;padding:5px 0}
.hero-card ul li span{color:var(--c-accent);font-weight:700;font-variant-numeric:tabular-nums}

/* ===== 区块标题 ===== */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head h2{font-size:30px}
.section-head__note{margin-top:12px;font-size:16px;color:var(--c-ink-2);max-width:640px}
.section-head--center{flex-direction:column;align-items:flex-start}

/* ===== 疑问区 ===== */
.pain-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:56px;align-items:start}
.pain-grid h2{font-size:30px}
.pain-grid__lead{margin-top:16px;font-size:16px;color:var(--c-ink-2)}
.pain-list li{
  display:grid;grid-template-columns:56px 1fr;gap:20px;padding:22px 0;
  border-bottom:1px solid var(--c-line);
}
.pain-list li:first-child{border-top:1px solid var(--c-line)}
.pain-num{font-size:22px;font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums;line-height:1.3}
.pain-q{font-size:18px;font-weight:600;color:var(--c-ink)}
.pain-a{margin-top:6px;font-size:15px;line-height:1.75;color:var(--c-ink-2)}

/* ===== 方案卡 ===== */
.plan-grid{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:24px;align-items:stretch}
.card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:box-shadow .2s var(--ease),transform .2s var(--ease);
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.plan-main{overflow:hidden;display:flex;flex-direction:column}
.plan-main__media{overflow:hidden}
.plan-main__media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;
  transition:transform .22s var(--ease);
}
.plan-main:hover .plan-main__media img{transform:scale(1.02)}
.plan-main__body{padding:28px 30px 30px}
.plan-main__head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.plan-main h3{font-size:22px;margin-bottom:12px}
.plan-main p{font-size:16px;color:var(--c-ink-2)}
.plan-main .link-more{margin-top:20px}
.plan-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.plan-mini{padding:24px 26px;display:flex;flex-direction:column}
.plan-mini__icon{
  width:40px;height:40px;border-radius:8px;background:var(--c-primary-50);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.plan-mini__icon svg{width:22px;height:22px;stroke:var(--c-primary);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.plan-mini h3{font-size:18px;margin-bottom:10px}
.plan-mini p{font-size:14.5px;line-height:1.7;color:var(--c-ink-2);flex:1}
.plan-mini .link-more{margin-top:16px;font-size:14px}

/* ===== 数据区 ===== */
.stats-wrap{border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);padding:48px 0}
.stat{padding:0 28px;border-left:1px solid var(--c-line)}
.stat:first-child{border-left:none;padding-left:0}
.stat__num{font-size:38px;font-weight:700;line-height:1.1;color:var(--c-primary-700);font-variant-numeric:tabular-nums}
.stat__num small{font-size:16px;font-weight:600;margin-left:4px;color:var(--c-ink-2)}
.stat__label{margin-top:10px;font-size:14px;color:var(--c-ink-2)}
.stats-note{margin-top:14px;font-size:12px;color:var(--c-ink-3);text-align:right}

/* ===== 准备清单 ===== */
.prep-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:start}
.prep-grid h2{font-size:30px}
.prep-grid__lead{margin-top:16px;font-size:16px;color:var(--c-ink-2)}
.prep-list{display:grid;gap:14px}
.prep-item{
  display:grid;grid-template-columns:36px 1fr;gap:16px;align-items:start;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px 24px;box-shadow:var(--sh-1);
}
.prep-item__idx{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--c-accent);
  display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);font-weight:700;font-size:14px;font-variant-numeric:tabular-nums;background:#fff;
}
.prep-item h3{font-size:16.5px;margin-bottom:6px}
.prep-item p{font-size:14.5px;line-height:1.7;color:var(--c-ink-2)}

/* ===== 资讯列表 ===== */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.news-card{
  display:grid;grid-template-columns:132px 1fr;gap:18px;align-items:stretch;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:16px;box-shadow:var(--sh-1);color:var(--c-ink);
  transition:box-shadow .2s var(--ease),transform .2s var(--ease);
}
.news-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);color:var(--c-ink)}
.news-card__media{overflow:hidden;border-radius:var(--r-img)}
.news-card__media img{width:100%;height:100%;aspect-ratio:3/2;object-fit:cover}
.news-card__body{display:flex;flex-direction:column;min-width:0}
.news-card__title{
  font-size:16.5px;font-weight:600;line-height:1.5;margin-top:8px;color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-card__title{color:var(--c-primary)}
.news-card__excerpt{
  margin-top:8px;font-size:14px;line-height:1.65;color:var(--c-ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{margin-top:auto;padding-top:10px;font-size:13px;color:var(--c-ink-3);font-variant-numeric:tabular-nums}
.empty-state{
  min-height:180px;border:1px dashed var(--c-line);background:var(--c-bg-soft);
  border-radius:var(--r-card);display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;padding:32px;
}
.empty-state svg{width:32px;height:32px;stroke:var(--c-ink-3);fill:none;stroke-width:1.5}
.empty-state p{font-size:15px;color:var(--c-ink-2)}
.empty-state a{font-size:14px;font-weight:600}

/* ===== 表单引导 ===== */
.cta-inline{
  margin-top:40px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  border-left:3px solid var(--c-primary);background:var(--c-bg-soft);
  border-radius:0 var(--r-card) var(--r-card) 0;padding:24px 28px;
}
.cta-inline p{font-size:15.5px;color:var(--c-ink-2)}
.cta-inline strong{display:block;font-size:17px;color:var(--c-ink);margin-bottom:6px;font-weight:600}

/* ===== FAQ ===== */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{border:1px solid var(--c-line);border-radius:var(--r-btn);background:#fff;overflow:hidden;transition:background-color .2s var(--ease)}
.faq-item.is-open{background:var(--c-bg-soft);box-shadow:inset 3px 0 0 var(--c-primary)}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--c-ink);line-height:1.6;
}
.faq-btn:hover{color:var(--c-primary)}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{top:0;left:9px;width:2px;height:20px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-panel__inner{padding:0 24px 22px;font-size:15.5px;line-height:1.8;color:var(--c-ink-2)}

/* ===== 隐私说明 ===== */
.privacy-block{
  border-top:1px solid var(--c-line);padding-top:32px;display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;
}
.privacy-block h3{font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.privacy-block p,.privacy-block li{font-size:13.5px;line-height:1.75;color:var(--c-ink-3)}
.privacy-block a{font-size:13.5px;border-bottom:1px solid var(--c-line)}

/* ===== 页尾 CTA 带 ===== */
.cta-band{background:var(--c-primary-700);color:#fff;padding:64px 0}
.cta-band__grid{display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta-band h2{color:#fff;font-size:26px}
.cta-band p{margin-top:12px;font-size:15.5px;color:rgba(255,255,255,.78);max-width:620px}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-primary-700);color:#fff;border-top:3px solid var(--c-accent)}
.footer-main{padding:64px 0 48px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .brand__text-a{color:#fff}
.footer-brand .brand__text-b{color:var(--c-accent)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.75;color:rgba(255,255,255,.72);max-width:320px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.76);line-height:1.7}
.footer-col a:hover{color:var(--c-accent);border-bottom:1px solid var(--c-accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72);margin-left:18px}
.footer-bottom a:hover{color:var(--c-accent);border-bottom:1px solid var(--c-accent)}
.footer-bottom__links{display:flex;flex-wrap:wrap}

/* ===== 弹层 ===== */
.reveal-overlay{background:rgba(11,40,52,.55)}
.reveal{
  width:520px;max-width:calc(100vw - 32px);border:none;border-radius:var(--r-modal);
  box-shadow:var(--sh-3);padding:32px;background:#fff;
}
.reveal h2{font-size:20px;font-weight:600}
.reveal__sub{margin-top:8px;font-size:14px;color:var(--c-ink-2)}
.modal-close{
  position:absolute;top:8px;right:8px;width:40px;height:40px;display:flex;
  align-items:center;justify-content:center;border-radius:8px;color:var(--c-ink-3);
}
.modal-close:hover{background:var(--c-bg-alt);color:var(--c-ink)}
.modal-close svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round}
.field{margin-top:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.field .req{color:var(--c-accent)}
.field input,.field select{
  width:100%;height:46px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;color:var(--c-ink);transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field input:focus,.field select:focus{
  border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(22,101,127,.08);outline:none;
}
.field__hint{margin-top:6px;font-size:12.5px;color:var(--c-ink-3)}
.check{display:flex;align-items:flex-start;gap:10px;margin-top:18px;font-size:13px;color:var(--c-ink-2);line-height:1.7}
.check input{width:18px;height:18px;flex:0 0 18px;margin-top:3px;accent-color:var(--c-primary)}
.ask-form .btn{margin-top:20px}
.form-note{margin-top:12px;font-size:12.5px;color:var(--c-ink-3)}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .grid-container{padding-left:24px;padding-right:24px}
  .hero__title{font-size:36px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .section--tight{padding:48px 0}
  .nav-side{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{grid-template-columns:44px 1fr 44px}
  .brand{justify-self:center}
  .hero{padding:48px 0 64px}
  .hero__grid{grid-template-columns:1fr;gap:40px}
  .hero__title{font-size:32px}
  .hero-card{position:static;width:100%;margin-top:20px}
  .pain-grid,.prep-grid{grid-template-columns:1fr;gap:32px}
  .plan-grid{grid-template-columns:1fr}
  .plan-side{grid-template-rows:none;grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:repeat(2,1fr);padding:36px 0;gap:28px 0}
  .stat:nth-child(3){border-left:none;padding-left:0}
  .news-grid{grid-template-columns:1fr}
  .privacy-block{grid-template-columns:1fr;gap:22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band__grid{flex-direction:column;align-items:flex-start;gap:24px}
}
@media (max-width:639px){
  body{font-size:16px}
  .grid-container{padding-left:16px;padding-right:16px}
  .section{padding:48px 0}
  .hero__title{font-size:28px}
  .hero__sub{font-size:16px}
  .hero__actions .btn{width:100%}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px}
  .section-head h2,.pain-grid h2,.prep-grid h2{font-size:22px}
  .pain-list li{grid-template-columns:44px 1fr;gap:14px}
  .plan-side{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr;gap:24px 0}
  .stat{padding:0 16px}
  .stat:nth-child(odd){border-left:none;padding-left:0}
  .stat__num{font-size:30px}
  .stats-note{text-align:left}
  .news-card{grid-template-columns:104px 1fr;padding:14px;gap:14px}
  .cta-inline{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .footer-col,.footer-brand{padding:22px 0;border-bottom:1px solid rgba(255,255,255,.12)}
  .footer-brand{padding-top:0}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-bottom a{margin-left:0;margin-right:16px}
  .faq-btn{padding:16px 18px;font-size:15.5px}
  .faq-panel__inner{padding:0 18px 18px}
  .reveal{padding:24px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --c-primary:#16657F;
  --c-primary-700:#0E4C60;
  --c-primary-50:#E8F1F4;
  --c-accent:#E4752B;
  --c-accent-50:#FDF0E6;
  --c-trust:#2E9E7E;
  --c-ink:#16262E;
  --c-ink-2:#4E6068;
  --c-ink-3:#8A979D;
  --c-line:#E2EAEC;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F4F8F9;
  --c-bg-soft:#FAFCFC;
  --c-danger:#C0392B;
  --sh-1:0 1px 2px rgba(14,60,74,.06);
  --sh-2:0 6px 18px rgba(14,60,74,.08);
  --sh-3:0 14px 36px rgba(14,60,74,.10);
  --r-card:12px;
  --r-btn:8px;
  --r-img:10px;
  --r-modal:16px;
  --font-cn:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  letter-spacing:0;
}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,dl,dd,th,td,label,input,select,textarea,button{
  font-family:var(--font-cn);
  color:inherit;
}
h1,h2,h3,h4,h5,h6{color:var(--c-ink);line-height:1.35;margin:0;}
h1{font-size:40px;font-weight:700;}
h2{font-size:30px;font-weight:600;}
h3{font-size:22px;font-weight:600;}
p{margin:0 0 1em;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--c-primary-700);}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
button{font-family:var(--font-cn);cursor:pointer;}
table{border-collapse:collapse;width:100%;}
hr{border:0;border-top:1px solid var(--c-line);margin:24px 0;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--c-accent);
  outline-offset:2px;
}
.num{font-variant-numeric:tabular-nums;}

/* Foundation 覆盖 */
body,html{background:var(--c-bg);}
.grid-container{
  max-width:1200px;
  margin-left:auto;
  margin-right:auto;
  padding-left:32px;
  padding-right:32px;
  width:100%;
}
.grid-x{margin-left:0;margin-right:0;}
.button{
  border-radius:var(--r-btn);
  background-color:var(--c-primary);
  font-family:var(--font-cn);
}
.button:hover,.button:focus{background-color:var(--c-primary-700);}
.callout{
  border:none;
  border-left:3px solid var(--c-primary);
  border-radius:0;
  background:var(--c-bg-soft);
  color:var(--c-ink-2);
}
table{border-collapse:collapse;background:transparent;}
thead{background:transparent;}
.reveal{border-radius:var(--r-modal);}

/* 通用组件 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  text-decoration:none;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn--primary{background:var(--c-primary);color:#fff;}
.btn--primary:hover,.btn--primary:focus{background:var(--c-primary-700);color:#fff;}
.btn--accent{background:var(--c-accent);color:#fff;}
.btn--accent:hover,.btn--accent:focus{background:#CF6520;color:#fff;}
.btn--ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn--ghost:hover,.btn--ghost:focus{background:var(--c-primary-50);color:var(--c-primary);}
.btn--light{background:#fff;color:var(--c-primary-700);}
.btn--light:hover,.btn--light:focus{background:#EAF3F6;color:var(--c-primary-700);}
.btn--sm{height:38px;padding:0 16px;font-size:14px;}
.btn--block{width:100%;}
.link-more{
  color:var(--c-primary);
  font-size:15px;
  font-weight:600;
  border-bottom:1px solid var(--c-primary);
  padding-bottom:1px;
}
.link-more:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);}
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:12px;
  background:var(--c-primary-50);
  color:var(--c-primary-700);
  font-size:13px;
  font-weight:600;
}
.badge--trust{background:rgba(46,158,126,.12);color:#1F7A5F;}

/* 页头与导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:72px;
}
.nav-side{display:flex;align-items:center;gap:26px;}
.nav-side--left{justify-content:flex-end;}
.nav-side--right{justify-content:flex-start;}
.nav-list{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--c-ink-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:0;
  height:2px;
  background:var(--c-accent);
  transition:left .2s var(--ease),right .2s var(--ease);
}
.nav-link:hover,.nav-link:focus{color:var(--c-primary);}
.nav-link:hover::after,.nav-link:focus::after,
.nav-link[aria-current="page"]::after{left:0;right:0;}
.nav-link[aria-current="page"]{color:var(--c-primary);font-weight:600;}
.nav-cta{white-space:nowrap;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  justify-self:center;
}
.brand__mark{width:34px;height:34px;flex:0 0 34px;}
.brand__text{font-size:18px;font-weight:700;letter-spacing:0;white-space:nowrap;}
.brand__text-a{color:var(--c-ink);}
.brand__text-b{color:var(--c-accent);}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  padding:0;
}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:var(--c-ink);stroke-width:1.5;stroke-linecap:round;}
.mobile-panel{display:none;background:#fff;border-top:1px solid var(--c-line);}
.mobile-panel.is-open{display:block;}
.mobile-panel li{border-bottom:1px solid var(--c-line);}
.mobile-panel a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 20px;
  font-size:16px;
  color:var(--c-ink);
}
.mobile-panel a[aria-current="page"]{color:var(--c-primary);font-weight:600;}
.mobile-panel__cta{padding:16px 20px 20px;}

/* 文章页头 */
.article-head{
  background:var(--c-bg-alt);
  border-bottom:1px solid var(--c-line);
  padding:26px 0 44px;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-ink-3);
  margin-bottom:22px;
}
.crumbs a{color:var(--c-ink-2);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs__sep{color:var(--c-ink-3);}
.crumbs__current{
  color:var(--c-ink-3);
  max-width:460px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.article-head h1{
  font-size:34px;
  font-weight:700;
  margin:16px 0 0;
  max-width:900px;
}
.article-head .rule{margin:24px 0;}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--c-ink-3);
}

/* 正文 */
.article-main{padding:8px 0 24px;}
.article-wrap{max-width:820px;margin:0 auto;}
.article-body{
  font-size:17px;
  line-height:1.85;
  color:var(--c-ink);
  padding:32px 0 8px;
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;
  font-size:26px;
  font-weight:600;
  margin:40px 0 16px;
  padding-left:16px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.18em;
  width:3px;
  height:1em;
  background:var(--c-accent);
  border-radius:2px;
}
.article-body h3{
  font-size:20px;
  font-weight:600;
  margin:28px 0 12px;
}
.article-body h4{font-size:18px;font-weight:600;margin:22px 0 10px;}
.article-body strong{font-weight:600;color:var(--c-ink);}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-accent);}
.article-body ul{margin:0 0 1.2em;padding-left:0;list-style:none;}
.article-body ul li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
  list-style:none;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:4px;
  top:.72em;
  width:7px;
  height:7px;
  background:var(--c-accent);
  border-radius:1px;
}
.article-body ol{margin:0 0 1.2em;padding-left:24px;}
.article-body ol li{
  list-style:decimal;
  margin-bottom:10px;
  padding-left:4px;
}
.article-body ol li::marker{color:var(--c-accent);font-weight:600;}
.article-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  background:var(--c-bg-soft);
  border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-btn) var(--r-btn) 0;
  color:var(--c-ink-2);
  font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body code{
  background:var(--c-primary-50);
  border-radius:4px;
  padding:2px 6px;
  font-size:.92em;
  color:var(--c-primary-700);
}
.article-body img{
  border-radius:var(--r-img);
  margin:22px auto;
}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  font-size:13px;
  color:var(--c-ink-3);
  text-align:center;
  margin-top:10px;
}
.article-body table{
  width:100%;
  margin:24px 0;
  border-collapse:collapse;
}
.article-body th,.article-body td{
  padding:12px 14px;
  text-align:left;
  border-bottom:1px solid var(--c-line);
}
.article-body thead th{
  border-bottom:2px solid var(--c-line);
  font-weight:600;
  color:var(--c-ink);
  background:transparent;
}
.article-body tbody tr{background:transparent;}
.article-body tbody tr:hover{background:var(--c-bg-alt);}
.article-body tbody tr:nth-of-type(even){background:transparent;}

/* 内文引导 */
.inline-cta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  margin:40px 0 8px;
  padding:24px 28px;
  background:var(--c-bg-soft);
  border:1px solid var(--c-primary);
  border-radius:var(--r-card);
}
.inline-cta h2{font-size:20px;font-weight:600;margin:0 0 6px;padding:0;}
.inline-cta h2::before{display:none;}
.inline-cta p{margin:0;font-size:15px;color:var(--c-ink-2);}

/* 空态 */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  min-height:240px;
  padding:44px 24px;
  margin:32px 0;
  text-align:center;
  background:var(--c-bg-soft);
  border:1px dashed var(--c-line);
  border-radius:var(--r-card);
}
.empty-state svg{width:32px;height:32px;fill:none;stroke:var(--c-ink-3);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.empty-state h2{font-size:20px;font-weight:600;margin:0;}
.empty-state p{margin:0;font-size:15px;color:var(--c-ink-2);}

/* 板块 */
.section{padding:72px 0;}
.section--alt{background:var(--c-bg-alt);}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:32px;
}
.section-head h2{font-size:26px;font-weight:600;}
.section-head p{margin:8px 0 0;font-size:15px;color:var(--c-ink-2);}

/* 相关推荐小卡 */
.rec-list{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.rec-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.rec-card__thumb{
  aspect-ratio:3/2;
  overflow:hidden;
  background:var(--c-bg-alt);
}
.rec-card__thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .2s var(--ease);
}
.rec-card:hover .rec-card__thumb img{transform:scale(1.02);}
.rec-card__body{padding:16px 18px 20px;}
.rec-card__body h3{
  font-size:17px;
  font-weight:600;
  margin:0 0 8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rec-card__meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--c-ink-3);
}

/* 上一篇下一篇 */
.postnav{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  margin-bottom:24px;
}
.postnav__item{
  display:block;
  min-height:88px;
  padding:18px 20px;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  background:#fff;
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.postnav__item:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  border-color:var(--c-primary);
}
.postnav__label{
  display:block;
  font-size:13px;
  color:var(--c-ink-3);
  margin-bottom:8px;
}
.postnav__title{
  display:block;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  line-height:1.6;
}
.back-cat{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:15px;
  font-weight:600;
  color:var(--c-primary);
  border-bottom:1px solid var(--c-primary);
  padding-bottom:2px;
}
.back-cat:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);}

/* 隐私说明 */
.privacy-note{
  background:var(--c-bg-alt);
  border-top:1px solid var(--c-line);
  padding:24px 0;
}
.privacy-note p{
  margin:0;
  font-size:13px;
  line-height:1.8;
  color:var(--c-ink-3);
}
.privacy-note a{color:var(--c-ink-2);border-bottom:1px solid var(--c-line);}
.privacy-note a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary);}

/* 页尾 CTA */
.cta-band{
  background:var(--c-primary-700);
  color:#fff;
  padding:64px 0;
}
.cta-band__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.cta-band h2{color:#fff;font-size:28px;font-weight:600;margin:0 0 10px;}
.cta-band p{margin:0;color:rgba(255,255,255,.82);font-size:15px;max-width:640px;}

/* 页脚 */
.site-footer{
  background:var(--c-primary-700);
  color:rgba(255,255,255,.82);
  border-top:3px solid var(--c-accent);
}
.footer-main{padding:56px 0 40px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand .brand{margin-bottom:6px;}
.site-footer .brand__text-a{color:#fff;}
.site-footer .brand__text-b{color:var(--c-accent);}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  margin:14px 0 0;
  color:rgba(255,255,255,.72);
}
.footer-col h3{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin:0 0 16px;
}
.footer-col li{
  font-size:14px;
  line-height:1.7;
  margin-bottom:10px;
  color:rgba(255,255,255,.76);
}
.footer-col a{color:rgba(255,255,255,.78);}
.footer-col a:hover{
  color:#fff;
  text-decoration:underline;
  text-decoration-color:var(--c-accent);
  text-underline-offset:4px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:20px 0;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.66);
}
.footer-bottom__links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom__links a{color:rgba(255,255,255,.7);}
.footer-bottom__links a:hover{
  color:#fff;
  text-decoration:underline;
  text-decoration-color:var(--c-accent);
  text-underline-offset:4px;
}

/* 响应式 */
@media (max-width:1199px){
  .header-inner{padding-left:24px;padding-right:24px;}
}
@media (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px;}
  .section{padding:64px 0;}
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:center;
    height:64px;
    position:relative;
    padding-left:16px;
    padding-right:16px;
  }
  .nav-side--left{display:none;}
  .nav-side--right{
    position:absolute;
    right:12px;
    top:50%;
    transform:translateY(-50%);
    gap:8px;
  }
  .nav-side--right .nav-list,
  .nav-side--right .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .brand__text{font-size:17px;}
  .article-head h1{font-size:30px;}
  .article-head{padding:22px 0 36px;}
  .rec-list{grid-template-columns:1fr;gap:20px;}
  .footer-grid{grid-template-columns:1fr;gap:0;}
  .footer-col,.footer-brand{
    padding:22px 0;
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .footer-brand{padding-top:0;}
  .footer-grid > :last-child{border-bottom:none;}
  .cta-band{padding:48px 0;}
  .cta-band h2{font-size:24px;}
}
@media (max-width:639px){
  body{font-size:16px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .section{padding:48px 0;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .article-head h1{font-size:26px;}
  .crumbs__current{max-width:200px;}
  .article-body{font-size:16px;line-height:1.78;padding-top:24px;}
  .article-body h2{font-size:22px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .inline-cta{padding:20px;}
  .inline-cta .btn{width:100%;}
  .postnav{grid-template-columns:1fr;}
  .section-head h2{font-size:22px;}
  .cta-band__inner{flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
}

/* roulang page: category1 */
/* =========================================================
   1. 设计变量层
   ========================================================= */
:root{
  --c-primary:#16657F;
  --c-primary-700:#0E4C60;
  --c-primary-50:#E8F1F4;
  --c-accent:#E4752B;
  --c-accent-50:#FDF0E6;
  --c-accent-700:#C9611C;
  --c-trust:#2E9E7E;
  --c-danger:#C0392B;
  --c-ink:#16262E;
  --c-ink-2:#4E6068;
  --c-ink-3:#8A979D;
  --c-line:#E2EAEC;
  --c-line-2:#CFDFE4;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F4F8F9;
  --c-bg-soft:#FAFCFC;
  --sh-1:0 1px 2px rgba(14,60,74,.06);
  --sh-2:0 6px 18px rgba(14,60,74,.08);
  --sh-3:0 14px 36px rgba(14,60,74,.10);
  --r-card:12px;
  --r-btn:8px;
  --r-img:10px;
  --r-modal:16px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:72px;
  --sec-y:88px;
}

/* =========================================================
   2. Reset / 基础层
   ========================================================= */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  font-weight:400;
  letter-spacing:0;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{
  margin:0;
  color:var(--c-ink);
  font-weight:600;
  line-height:1.35;
  letter-spacing:0;
}
h1{font-size:40px;font-weight:700;}
h2{font-size:30px;}
h3{font-size:22px;}
h4{font-size:18px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{
  color:var(--c-primary);
  text-decoration:none;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
a:hover{color:var(--c-primary-700);}
img{max-width:100%;height:auto;display:block;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;}

/* =========================================================
   3. 布局层
   ========================================================= */
.grid-container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.section{padding:var(--sec-y) 0;}
.section--alt{background:var(--c-bg-alt);}
.section--tight{padding:64px 0;}
.split{
  display:grid;
  grid-template-columns:minmax(0,1.85fr) minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.section-head{max-width:780px;margin-bottom:40px;}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--c-ink-2);font-size:16px;margin:0;}
.section-head--row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  max-width:none;
}
.divider{height:1px;background:var(--c-line);border:0;margin:0;}

/* =========================================================
   4. 组件：按钮 / 徽章 / 文字链
   ========================================================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn--primary{background:var(--c-primary);color:#fff;}
.btn--primary:hover{background:var(--c-primary-700);color:#fff;}
.btn--accent{background:var(--c-accent);color:#fff;}
.btn--accent:hover{background:var(--c-accent-700);color:#fff;}
.btn--ghost{background:#fff;border-color:var(--c-primary);color:var(--c-primary);}
.btn--ghost:hover{background:var(--c-primary-50);color:var(--c-primary-700);}
.btn--on-dark{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn--on-dark:hover{background:rgba(255,255,255,.14);color:#fff;}
.btn--sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn--lg{min-height:52px;padding:0 28px;font-size:16px;}
.btn--block{width:100%;}
.btn[disabled],.btn:disabled{opacity:.5;cursor:not-allowed;}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:12px;
  background:var(--c-primary-50);
  color:var(--c-primary);
  font-size:12.5px;
  font-weight:600;
  line-height:1.6;
}
.badge--trust{background:rgba(46,158,126,.12);color:var(--c-trust);}
.badge--accent{background:var(--c-accent-50);color:var(--c-accent-700);}

.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--c-primary);
  border-bottom:1px solid rgba(22,101,127,.35);
  padding-bottom:2px;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.link-more:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);}
.link-more svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}

/* =========================================================
   5. 站点页头与导航
   ========================================================= */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  height:var(--header-h);
}
.nav-side{display:flex;align-items:center;gap:8px;min-width:0;}
.nav-side--left{grid-column:1;justify-content:flex-end;}
.nav-side--right{grid-column:3;justify-content:flex-start;}
.nav-list{display:flex;align-items:center;gap:2px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:15px;
  font-weight:500;
  line-height:1.2;
  color:var(--c-ink-2);
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:4px;
  height:2px;
  background:var(--c-accent);
  transition:left .2s var(--ease),right .2s var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{left:12px;right:12px;}
.nav-link[aria-current="page"]{color:var(--c-primary);font-weight:600;}
.nav-link[aria-current="page"]::after{left:12px;right:12px;}
.nav-cta{margin-left:10px;}

.brand{
  grid-column:2;
  display:inline-flex;
  align-items:center;
  gap:10px;
  justify-self:center;
}
.brand__mark{width:34px;height:34px;flex:0 0 auto;}
.brand__text{font-size:17px;font-weight:700;line-height:1.2;white-space:nowrap;}
.brand__text-a{color:var(--c-ink);}
.brand__text-b{color:var(--c-primary);}

.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:#fff;
  margin-left:6px;
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--c-primary);background:var(--c-primary-50);}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:var(--c-ink);stroke-width:1.5;stroke-linecap:round;}

.mobile-panel{
  display:none;
  background:#fff;
  border-top:1px solid var(--c-line);
  padding:8px 0 20px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel li{border-bottom:1px solid var(--c-line);}
.mobile-panel a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 24px;
  font-size:15px;
  font-weight:500;
  color:var(--c-ink-2);
}
.mobile-panel a:hover{color:var(--c-primary);}
.mobile-panel a[aria-current="page"]{color:var(--c-primary);font-weight:600;}
.mobile-panel__cta{padding:18px 24px 0;}

/* =========================================================
   6. 窄幅页头 / 面包屑
   ========================================================= */
.page-head{
  background:var(--c-bg-alt);
  border-bottom:1px solid var(--c-line);
  padding:30px 0;
  min-height:136px;
  display:flex;
  align-items:center;
}
.page-head__inner{display:flex;flex-direction:column;gap:12px;width:100%;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--c-ink-3);
}
.breadcrumb a{color:var(--c-ink-2);padding:6px 0;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-ink-3);}
.breadcrumb .current{color:var(--c-ink-3);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--c-accent);border-radius:1px;}

/* =========================================================
   7. 引言区
   ========================================================= */
.intro-main h1{font-size:38px;line-height:1.32;margin-bottom:20px;}
.lead{font-size:17px;line-height:1.9;color:var(--c-ink-2);}
.intro-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:24px;
}
.quick-card{
  background:var(--c-bg-soft);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
}
.quick-card h3{font-size:16px;margin-bottom:6px;}
.quick-card .quick-sub{font-size:13px;color:var(--c-ink-3);margin-bottom:16px;}
.quick-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:12px 0;
  border-top:1px dashed var(--c-line);
  font-size:14.5px;
  color:var(--c-ink-2);
  line-height:1.7;
}
.quick-list li:first-child{border-top:0;padding-top:0;}
.quick-list svg{flex:0 0 auto;width:18px;height:18px;margin-top:4px;fill:none;stroke:var(--c-accent);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}

/* =========================================================
   8. 步骤时间轴
   ========================================================= */
.timeline{position:relative;padding:8px 0 0;}
.timeline::before{
  content:"";
  position:absolute;
  left:63px;
  top:24px;
  bottom:24px;
  width:1px;
  background:var(--c-primary);
  opacity:.2;
}
.timeline__item{
  position:relative;
  padding-left:120px;
  padding-bottom:32px;
}
.timeline__item:last-child{padding-bottom:0;}
.timeline__node{
  position:absolute;
  left:48px;
  top:18px;
  width:32px;
  height:32px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:#fff;
  border:1px solid var(--c-accent);
  color:var(--c-primary);
  font-size:14px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 5px #fff;
}
.timeline__body{
  display:flex;
  gap:28px;
  align-items:flex-start;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px 24px;
  box-shadow:var(--sh-1);
  transition:box-shadow .2s var(--ease),transform .2s var(--ease);
}
.timeline__body:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.timeline__text{flex:1 1 auto;min-width:0;}
.timeline__text h3{font-size:20px;margin-bottom:10px;}
.timeline__text p{font-size:15.5px;color:var(--c-ink-2);line-height:1.8;margin:0 0 8px;}
.timeline__text p:last-child{margin-bottom:0;}
.timeline__thumb{
  flex:0 0 220px;
  width:220px;
  aspect-ratio:3/2;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-bg-alt);
}
.timeline__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s var(--ease);}
.timeline__thumb:hover img{transform:scale(1.02);}
.timeline__tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12.5px;
  color:var(--c-ink-3);
  margin-bottom:10px;
}

/* =========================================================
   9. 材料清单
   ========================================================= */
.prepare-copy h2{margin-bottom:14px;}
.prepare-copy p{color:var(--c-ink-2);font-size:16px;}
.prepare-copy .link-more{margin-top:18px;}
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.check-item{
  display:flex;
  gap:12px;
  align-items:flex-start;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  padding:16px 18px;
  font-size:15px;
  line-height:1.7;
  color:var(--c-ink-2);
  box-shadow:var(--sh-1);
  transition:box-shadow .2s var(--ease),transform .2s var(--ease);
}
.check-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.check-item svg{flex:0 0 auto;width:20px;height:20px;margin-top:3px;fill:none;stroke:var(--c-trust);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}

/* =========================================================
   10. 下一步卡片
   ========================================================= */
.next-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.next-card{
  display:flex;
  gap:20px;
  align-items:center;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh-1);
  transition:box-shadow .2s var(--ease),transform .2s var(--ease);
}
.next-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.next-card__thumb{
  flex:0 0 140px;
  width:140px;
  aspect-ratio:3/2;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--c-line);
}
.next-card__thumb img{width:100%;height:100%;object-fit:cover;}
.next-card__body{min-width:0;}
.next-card__body h3{font-size:18px;margin-bottom:8px;}
.next-card__body p{font-size:14.5px;color:var(--c-ink-2);line-height:1.75;margin:0 0 12px;}

/* =========================================================
   11. FAQ 手风琴
   ========================================================= */
.faq{max-width:880px;}
.faq-item{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.faq-item[open]{
  background:var(--c-bg-soft);
  border-color:var(--c-line-2);
  border-left:3px solid var(--c-primary);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:58px;
  padding:16px 20px;
  font-size:16.5px;
  font-weight:600;
  color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px;}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--c-primary);
  border-radius:1px;
}
.faq-icon::before{left:2px;right:2px;top:9px;height:2px;}
.faq-icon::after{top:2px;bottom:2px;left:9px;width:2px;transition:opacity .18s var(--ease);}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-item__a{padding:0 20px 20px;font-size:15.5px;line-height:1.85;color:var(--c-ink-2);}
.faq-item__a p{margin:0;}

/* =========================================================
   12. 页尾 CTA 带
   ========================================================= */
.cta-band{
  position:relative;
  background:var(--c-primary-700);
  color:#fff;
  padding:56px 0;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:3px;
  background:var(--c-accent);
}
.cta-band__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;margin:0;max-width:620px;}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap;}

/* =========================================================
   13. 隐私说明条
   ========================================================= */
.privacy-strip{
  background:var(--c-bg-soft);
  border-top:1px solid var(--c-line);
  padding:24px 0;
}
.privacy-strip__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13.5px;
  color:var(--c-ink-3);
  line-height:1.8;
}
.privacy-strip__inner a{color:var(--c-primary);border-bottom:1px solid rgba(22,101,127,.35);}
.privacy-strip__inner a:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);}

/* =========================================================
   14. 页脚
   ========================================================= */
.site-footer{
  background:var(--c-primary-700);
  color:rgba(255,255,255,.82);
  border-top:3px solid var(--c-accent);
}
.footer-main{padding:56px 0 40px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:40px;}
.footer-brand .brand{justify-self:flex-start;}
.footer-brand .brand__text-a{color:#fff;}
.footer-brand .brand__text-b{color:var(--c-accent);}
.footer-brand p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.66);margin:16px 0 0;}
.footer-brand p + p{margin-top:8px;}
.footer-col h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;font-size:14px;line-height:1.7;}
.footer-col a{color:rgba(255,255,255,.78);border-bottom:1px solid transparent;padding-bottom:1px;}
.footer-col a:hover{color:#fff;border-bottom-color:var(--c-accent);}
.footer-col span{color:rgba(255,255,255,.66);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.footer-bottom__links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom__links a{color:rgba(255,255,255,.72);border-bottom:1px solid transparent;}
.footer-bottom__links a:hover{color:#fff;border-bottom-color:var(--c-accent);}

/* =========================================================
   15. Foundation 默认样式覆盖
   ========================================================= */
.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;}
.grid-x{margin:0;}
.grid-margin-x{margin-left:-.9375rem;margin-right:-.9375rem;}
.grid-margin-x > .cell{margin-left:.9375rem;margin-right:.9375rem;}
.callout{background:var(--c-bg-soft);border:1px solid var(--c-line);border-left:3px solid var(--c-primary);border-radius:var(--r-btn);color:var(--c-ink-2);}
.accordion,.accordion-item,.accordion-title,.accordion-content{background:#fff;color:var(--c-ink);border-color:var(--c-line);}

/* =========================================================
   16. 响应式
   ========================================================= */
@media (max-width:1199px){
  .intro-main h1{font-size:34px;}
}
@media (max-width:1023px){
  :root{--sec-y:64px;}
  .grid-container{padding-left:24px;padding-right:24px;}
  .nav-side--left{display:none;}
  .nav-side--right .nav-list{display:none;}
  .nav-side--right .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:64px;}
  h1{font-size:32px;}
  h2{font-size:26px;}
  h3{font-size:20px;}
  .intro-main h1{font-size:32px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .timeline::before{left:19px;top:20px;bottom:20px;}
  .timeline__item{padding-left:60px;padding-bottom:24px;}
  .timeline__node{left:6px;top:14px;width:28px;height:28px;font-size:13px;}
  .timeline__body{flex-direction:column-reverse;gap:16px;padding:20px;}
  .timeline__thumb{flex:0 0 auto;width:100%;aspect-ratio:16/9;}
  .next-grid{grid-template-columns:1fr;}
  .cta-band__inner{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  :root{--sec-y:48px;}
  body{font-size:16px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .intro-main h1{font-size:28px;}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:14px;}
  .check-list{grid-template-columns:1fr;}
  .next-card{flex-direction:column;align-items:stretch;gap:16px;}
  .next-card__thumb{width:100%;flex:0 0 auto;}
  .page-head{min-height:120px;padding:22px 0;}
  .cta-band{padding:40px 0;}
  .cta-band h2{font-size:22px;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:0;}
  .footer-brand{padding-bottom:20px;}
  .footer-col{padding:20px 0;border-top:1px solid rgba(255,255,255,.12);}
  .footer-brand + .footer-col{border-top:1px solid rgba(255,255,255,.12);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#16657F;
  --c-primary-700:#0E4C60;
  --c-primary-50:#E8F1F4;
  --c-accent:#E4752B;
  --c-accent-50:#FDF0E6;
  --c-trust:#2E9E7E;
  --c-ink:#16262E;
  --c-ink-2:#4E6068;
  --c-ink-3:#8A979D;
  --c-line:#E2EAEC;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F4F8F9;
  --c-bg-soft:#FAFCFC;
  --c-danger:#C0392B;
  --r-card:12px;
  --r-btn:8px;
  --r-img:10px;
  --r-modal:16px;
  --sh-1:0 1px 2px rgba(14,60,74,.06);
  --sh-2:0 6px 18px rgba(14,60,74,.08);
  --sh-3:0 14px 36px rgba(14,60,74,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-section:88px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:var(--c-primary);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--c-primary-700);}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
button{font:inherit;color:inherit;}
input,textarea,select{font:inherit;}
p{font-size:16.5px;line-height:1.85;color:var(--c-ink-2);}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* ============ 容器与栅格辅助 ============ */
.grid-container{width:100%;max-width:1200px;margin-left:auto;margin-right:auto;padding-left:32px;padding-right:32px;}
.section{padding-top:var(--sp-section);padding-bottom:var(--sp-section);}
.section--tight{padding-top:56px;padding-bottom:56px;}
.section--alt{background:var(--c-bg-alt);}
.faq-layout.grid-margin-x{margin-left:-16px;margin-right:-16px;}
.faq-layout.grid-margin-x > .cell{padding-left:16px;padding-right:16px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:none;
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:72px;
}
.nav-side{display:flex;align-items:center;gap:20px;}
.nav-side--left{justify-self:end;justify-content:flex-end;}
.nav-side--right{justify-self:start;justify-content:flex-start;}
.nav-list{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:72px;
  font-size:15px;
  font-weight:500;
  color:var(--c-ink-2);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:22px;
  height:2px;
  background:var(--c-accent);
  transition:left .2s var(--ease),right .2s var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{left:0;right:0;}
.nav-link[aria-current="page"]{color:var(--c-primary);}
.nav-link[aria-current="page"]::after{left:0;right:0;}

.brand{display:inline-flex;align-items:center;gap:10px;}
.brand__mark{width:34px;height:34px;flex:none;}
.brand__text{font-size:19px;font-weight:700;letter-spacing:0;white-space:nowrap;}
.brand__text-a{color:var(--c-ink);}
.brand__text-b{color:var(--c-primary);}

.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  cursor:pointer;
}
.nav-toggle svg{width:24px;height:24px;fill:none;stroke:var(--c-ink);stroke-width:1.5;stroke-linecap:round;}

.mobile-panel{display:none;background:#fff;border-top:1px solid var(--c-line);}
.mobile-panel ul li a{display:flex;align-items:center;min-height:52px;padding:0 16px;border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-ink);}
.mobile-panel ul li a[aria-current="page"]{color:var(--c-primary);font-weight:600;}
.mobile-panel__cta{padding:16px;}
body.nav-open .mobile-panel{display:block;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn--primary{background:var(--c-primary);color:#fff;}
.btn--primary:hover{background:var(--c-primary-700);color:#fff;}
.btn--accent{background:var(--c-accent);color:#fff;}
.btn--accent:hover{background:#cf6520;color:#fff;}
.btn--ghost{background:#fff;border-color:var(--c-primary);color:var(--c-primary);}
.btn--ghost:hover{background:var(--c-primary-50);color:var(--c-primary-700);}
.btn--sm{height:40px;padding:0 18px;font-size:14px;}
.btn--lg{height:52px;padding:0 32px;font-size:16px;}
.btn--block{width:100%;}
.btn:disabled{opacity:.55;cursor:not-allowed;}

/* ============ 页头（窄幅） ============ */
.page-head{
  background:var(--c-bg-alt);
  border-bottom:1px solid var(--c-line);
  padding:32px 0 44px;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--c-ink-3);margin-bottom:20px;}
.breadcrumb a{color:var(--c-ink-2);display:inline-flex;align-items:center;min-height:44px;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-ink-3);}
.breadcrumb .current{color:var(--c-ink-2);}
.page-head__kicker{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--c-primary);
  background:var(--c-primary-50);
  border-radius:12px;
  padding:4px 12px;
  margin-bottom:16px;
}
.page-head h1{
  font-size:38px;
  font-weight:700;
  line-height:1.35;
  color:var(--c-ink);
  max-width:860px;
}
.page-head__intro{
  margin-top:16px;
  max-width:720px;
  font-size:16.5px;
  color:var(--c-ink-2);
}

/* 搜索框 */
.faq-search{display:flex;gap:12px;max-width:600px;margin-top:26px;}
.faq-search input[type="search"]{
  flex:1;
  height:48px;
  padding:0 16px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:#fff;
  color:var(--c-ink);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.faq-search input[type="search"]::placeholder{color:var(--c-ink-3);}
.faq-search input[type="search"]:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,101,127,.10);}
.faq-search__hint{margin-top:12px;font-size:13px;color:var(--c-ink-3);}

/* ============ FAQ 分组 ============ */
.faq-group{margin-bottom:48px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group__title{
  position:relative;
  font-size:24px;
  font-weight:600;
  color:var(--c-ink);
  padding-left:16px;
  margin-bottom:20px;
}
.faq-group__title::before{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  bottom:6px;
  width:3px;
  background:var(--c-accent);
  border-radius:2px;
}
.faq-group__note{font-size:14px;color:var(--c-ink-3);margin:-8px 0 20px;}

.faq-item{
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:#fff;
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.faq-item:hover{box-shadow:var(--sh-1);}
.faq-item.is-open{border-left:3px solid var(--c-primary);background:var(--c-bg-soft);}
.faq-item__head{margin:0;font-size:inherit;font-weight:inherit;}
.faq-q{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  width:100%;
  min-height:64px;
  padding:18px 20px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16.5px;
  font-weight:600;
  color:var(--c-ink);
  cursor:pointer;
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{position:relative;width:20px;height:20px;flex:none;margin-top:4px;}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--c-primary);
  border-radius:2px;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-icon::before{left:0;right:0;top:9px;height:1.5px;}
.faq-icon::after{top:0;bottom:0;left:9px;width:1.5px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-item.is-open .faq-icon::before{background:var(--c-accent);}
.faq-panel{display:none;padding:0 20px 20px 20px;}
.faq-item.is-open .faq-panel{display:block;}
.faq-panel p{font-size:16px;color:var(--c-ink-2);}
.faq-panel p + p{margin-top:10px;}

/* ============ 侧栏 ============ */
.faq-aside{margin-top:8px;}
.aside-sticky{position:sticky;top:96px;}
.side-nav{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh-1);
  margin-bottom:20px;
}
.side-nav h2{font-size:16px;font-weight:600;color:var(--c-ink);margin-bottom:12px;}
.side-nav ul li + li{border-top:1px solid var(--c-line);}
.side-nav ul li a{
  display:flex;
  align-items:center;
  min-height:44px;
  font-size:14.5px;
  color:var(--c-ink-2);
}
.side-nav ul li a:hover{color:var(--c-primary);}
.side-nav ul li a::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--c-accent);
  margin-right:10px;
  flex:none;
}

.contact-card{
  background:var(--c-primary-50);
  border:1px solid #D5E4E9;
  border-radius:var(--r-card);
  padding:22px;
}
.contact-card img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
  margin-bottom:16px;
}
.contact-card h2{font-size:18px;font-weight:600;color:var(--c-primary-700);margin-bottom:8px;}
.contact-card p{font-size:14px;color:var(--c-ink-2);margin-bottom:16px;}

/* ============ CTA 带 ============ */
.cta-band{background:var(--c-primary-700);color:#fff;padding:56px 0;}
.cta-band__inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-band h2{font-size:26px;font-weight:600;color:#fff;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15.5px;margin-top:8px;max-width:620px;}

/* ============ 弹层 ============ */
.modal-mask{
  position:fixed;
  inset:0;
  display:none;
  align-items:center;
  justify-content:center;
  padding:24px;
  background:rgba(11,40,52,.55);
  z-index:120;
}
.modal-mask.is-open{display:flex;}
.modal-card{
  position:relative;
  width:100%;
  max-width:520px;
  max-height:90vh;
  overflow:auto;
  background:#fff;
  border-radius:var(--r-modal);
  box-shadow:var(--sh-3);
  padding:32px;
}
.modal-card h2{font-size:20px;font-weight:600;color:var(--c-ink);}
.modal-card .modal-sub{font-size:14px;color:var(--c-ink-2);margin-top:8px;margin-bottom:20px;}
.modal-close{
  position:absolute;
  top:12px;
  right:12px;
  width:40px;
  height:40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  cursor:pointer;
}
.modal-close svg{width:18px;height:18px;fill:none;stroke:var(--c-ink-2);stroke-width:1.5;stroke-linecap:round;}
.modal-close:hover svg{stroke:var(--c-primary);}

.form-field{margin-bottom:16px;}
.form-field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px;}
.form-field label .req{color:var(--c-accent);margin-left:2px;}
.form-field input,.form-field textarea,.form-field select{
  width:100%;
  min-height:46px;
  padding:10px 14px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:#fff;
  color:var(--c-ink);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.form-field textarea{min-height:110px;resize:vertical;}
.form-field input:focus,.form-field textarea:focus,.form-field select:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(22,101,127,.10);
}
.form-field .field-hint{font-size:12.5px;color:var(--c-ink-3);margin-top:6px;}
.form-check{display:flex;align-items:flex-start;gap:10px;margin-top:4px;}
.form-check input{width:18px;height:18px;margin-top:4px;flex:none;}
.form-check label{font-size:13px;color:var(--c-ink-2);font-weight:400;line-height:1.7;}
.form-check a{text-decoration:underline;text-underline-offset:3px;}
.modal-actions{margin-top:20px;}
.form-error{display:none;font-size:13px;color:var(--c-danger);margin-top:6px;}
.form-field.has-error input,.form-field.has-error textarea{border-color:var(--c-danger);}
.form-field.has-error .form-error{display:block;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-700);color:#fff;}
.site-footer::before{content:"";display:block;height:3px;background:var(--c-accent);}
.footer-main{padding:56px 0 40px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .brand__text-a{color:#fff;}
.footer-brand .brand__text-b{color:var(--c-accent);}
.footer-brand p{color:rgba(255,255,255,.72);font-size:14px;line-height:1.8;margin-top:14px;}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a,.footer-col span{color:rgba(255,255,255,.75);font-size:14px;display:inline-block;min-height:26px;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  color:rgba(255,255,255,.65);
  font-size:13px;
}
.footer-bottom__links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom__links a{color:rgba(255,255,255,.75);display:inline-flex;align-items:center;min-height:32px;}
.footer-bottom__links a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sp-section:72px;}
  .page-head h1{font-size:34px;}
}

@media (max-width:1023px){
  :root{--sp-section:64px;}
  .grid-container{padding-left:24px;padding-right:24px;}
  .header-inner{grid-template-columns:1fr auto 1fr;}
  .nav-side--left,.nav-side--right .nav-list{display:none;}
  .nav-side--right{gap:0;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .page-head h1{font-size:30px;}
  .faq-aside{margin-top:32px;}
  .aside-sticky{position:static;}
  .cta-band__inner{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .faq-layout.grid-margin-x{margin-left:-12px;margin-right:-12px;}
  .faq-layout.grid-margin-x > .cell{padding-left:12px;padding-right:12px;}
}

@media (max-width:639px){
  :root{--sp-section:48px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  body{font-size:16px;}
  .brand__text{font-size:17px;}
  .page-head{padding:20px 0 32px;}
  .page-head h1{font-size:26px;}
  .page-head__intro{font-size:16px;}
  .faq-search{flex-direction:column;}
  .faq-search .btn{width:100%;}
  .faq-q{font-size:16px;padding:16px;}
  .faq-panel{padding:0 16px 18px 16px;}
  .faq-group__title{font-size:21px;}
  .cta-band h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:0;}
  .footer-col{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;margin-top:20px;}
  .footer-brand{border-top:0;padding-top:0;margin-top:0;}
  .modal-card{padding:24px;}
}

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

/* roulang page: category2 */
:root{
  --c-primary:#16657F;
  --c-primary-700:#0E4C60;
  --c-primary-50:#E8F1F4;
  --c-accent:#E4752B;
  --c-accent-50:#FDF0E6;
  --c-trust:#2E9E7E;
  --c-ink:#16262E;
  --c-ink-2:#4E6068;
  --c-ink-3:#8A979D;
  --c-line:#E2EAEC;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F4F8F9;
  --c-bg-soft:#FAFCFC;
  --c-danger:#C0392B;
  --r-card:12px;
  --r-btn:8px;
  --r-img:10px;
  --r-modal:16px;
  --sh-1:0 1px 2px rgba(14,60,74,.06);
  --sh-2:0 6px 18px rgba(14,60,74,.08);
  --sh-3:0 14px 36px rgba(14,60,74,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:180ms;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:0;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t) var(--ease)}
a:hover{color:var(--c-accent)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0 0 16px;color:var(--c-ink);line-height:1.32;letter-spacing:0}
h1{font-size:40px;font-weight:700}
h2{font-size:30px;font-weight:600}
h3{font-size:22px;font-weight:600}
h4{font-size:18px;font-weight:600}
strong{font-weight:600;color:var(--c-ink)}
button{font-family:inherit}
input,textarea,select{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.btn:focus-visible,.nav-link:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}

/* 容器与栅格 */
.grid-container{max-width:var(--container);padding-left:32px;padding-right:32px;margin-left:auto;margin-right:auto}
.grid-x{display:flex;flex-flow:row wrap}
.grid-margin-x{margin-left:-15px;margin-right:-15px}
.grid-margin-x>.cell{width:calc(100% - 30px);margin-left:15px;margin-right:15px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border:1px solid transparent;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;text-align:center;
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.btn--primary{background:var(--c-primary);color:#fff}
.btn--primary:hover,.btn--primary:focus{background:var(--c-primary-700);color:#fff}
.btn--accent{background:var(--c-accent);color:#fff}
.btn--accent:hover,.btn--accent:focus{background:#cf651f;color:#fff}
.btn--outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary)}
.btn--outline:hover,.btn--outline:focus{background:var(--c-primary-50);color:var(--c-primary-700)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--lg{height:52px;padding:0 30px;font-size:16px}
.btn--block{width:100%}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--c-primary);
  border-bottom:1px solid rgba(22,101,127,.35);padding-bottom:2px;transition:color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.btn-link:hover{color:var(--c-accent);border-color:var(--c-accent)}
.btn-link svg{width:15px;height:15px;flex:none}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;height:72px;
}
.nav-side{display:flex;align-items:center}
.nav-side--left{justify-content:flex-end}
.nav-side--right{justify-content:flex-start;gap:14px}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--c-ink-2);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;width:0;height:2px;background:var(--c-accent);
  transform:translateX(-50%);transition:width var(--t) var(--ease);
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{width:calc(100% - 28px)}
.nav-link[aria-current="page"]{color:var(--c-primary);font-weight:600}
.nav-link[aria-current="page"]::after{width:calc(100% - 28px);background:var(--c-accent)}
.nav-cta{margin-left:6px}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;color:var(--c-primary)}
.brand:hover{color:var(--c-primary)}
.brand__mark{width:34px;height:34px;flex:none}
.brand__text{font-size:19px;font-weight:700;letter-spacing:0;white-space:nowrap}
.brand__text-a{color:var(--c-primary)}
.brand__text-b{color:var(--c-accent);margin-left:2px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:44px;height:44px;padding:0;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-btn);cursor:pointer;
}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:var(--c-primary);stroke-width:1.5;stroke-linecap:round}
.mobile-panel{display:none;border-top:1px solid var(--c-line);background:#fff;padding:8px 0 20px}
.mobile-panel ul li{border-bottom:1px solid var(--c-line)}
.mobile-panel ul li:last-child{border-bottom:0}
.mobile-panel ul li a{display:flex;align-items:center;min-height:52px;padding:0 24px;font-size:16px;color:var(--c-ink-2);font-weight:500}
.mobile-panel ul li a[aria-current="page"]{color:var(--c-primary);font-weight:600}
.mobile-panel__cta{padding:16px 24px 0}
.mobile-panel.is-open{display:block}

/* 页头窄幅 */
.page-head{
  position:relative;padding:36px 0 32px;background-color:var(--c-bg-alt);
  background-image:linear-gradient(104deg,rgba(244,248,249,.95) 0%,rgba(244,248,249,.88) 46%,rgba(232,241,244,.76) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center right;background-repeat:no-repeat;
  border-bottom:1px solid var(--c-line);
}
.breadcrumb{font-size:13.5px;color:var(--c-ink-3);margin-bottom:14px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"›";color:var(--c-ink-3)}
.breadcrumb a{color:var(--c-ink-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb [aria-current="page"]{color:var(--c-ink)}
.page-head__label{
  display:inline-flex;align-items:center;gap:8px;margin:0;
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--c-primary);
  background:var(--c-primary-50);border-radius:12px;padding:6px 14px;
}
.page-head__title{font-size:25px;font-weight:600;margin:16px 0 0;color:var(--c-ink)}
.page-head__meta{margin:10px 0 0;font-size:14px;color:var(--c-ink-2);max-width:760px}

/* 通用板块 */
.section{padding:96px 0}
.section--alt{background:var(--c-bg-alt)}
.section--tight{padding:72px 0}
.section-head{max-width:780px;margin-bottom:44px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--c-ink-2);font-size:16px}
.eyebrow{
  display:inline-block;margin-bottom:12px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-accent);
}
.rule-top{border-top:1px solid var(--c-line)}

/* 引言区 */
.intro{padding-top:72px}
.intro h1{margin-bottom:20px}
.lead{font-size:17.5px;color:var(--c-ink-2);line-height:1.85}
.intro-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.summary-card{
  background:var(--c-bg-soft);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 26px 22px;box-shadow:var(--sh-1);
}
.summary-card h2{font-size:17px;font-weight:600;margin-bottom:16px}
.summary-list li{
  display:flex;gap:12px;padding:12px 0;border-top:1px solid var(--c-line);font-size:14.5px;color:var(--c-ink-2);
}
.summary-list li:first-child{border-top:0;padding-top:0}
.summary-list span.num{
  flex:none;width:22px;height:22px;border-radius:50%;border:1.5px solid var(--c-accent);color:var(--c-accent);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:4px;
  font-variant-numeric:tabular-nums;
}

/* Z 字型图文 */
.zrow{align-items:center;margin-bottom:72px}
.zrow:last-child{margin-bottom:0}
.zrow__media{order:1}
.zrow__body{order:2}
.zrow--reverse .zrow__media{order:2}
.zrow--reverse .zrow__body{order:1}
.zrow__media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--c-line);box-shadow:var(--sh-1);
}
.zrow__body h3{margin-bottom:14px}
.zrow__body p{color:var(--c-ink-2);font-size:16px}
.znum{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;margin-bottom:16px;
  border-radius:50%;border:1.5px solid var(--c-accent);color:var(--c-accent);
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
}
.zrow__body .btn-link{margin-top:10px}

/* 准备清单 */
.prep-grid{align-items:center}
.prep-list li{
  display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--c-line);
}
.prep-list li:first-child{border-top:1px solid var(--c-line)}
.prep-list svg{width:24px;height:24px;flex:none;margin-top:4px;stroke:var(--c-primary);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.prep-list h4{margin:0 0 4px;font-size:16px}
.prep-list p{margin:0;font-size:14.5px;color:var(--c-ink-2)}
.prep-figure{margin:0}
.prep-figure img{
  width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--c-line);box-shadow:var(--sh-1);
}
.prep-figure figcaption{margin-top:12px;font-size:13px;color:var(--c-ink-3);text-align:center}

/* 卡片 */
.card-grid .cell{display:flex}
.card{
  display:flex;flex-direction:column;width:100%;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);
  transition:box-shadow var(--t) var(--ease),transform var(--t) var(--ease);
}
.card:hover,.card:focus-within{box-shadow:var(--sh-2);transform:translateY(-2px)}
.card__icon{width:40px;height:40px;margin-bottom:16px;display:flex;align-items:center;justify-content:center;background:var(--c-accent-50);border-radius:var(--r-btn)}
.card__icon svg{width:22px;height:22px;stroke:var(--c-accent);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:18px;margin-bottom:10px}
.card p{font-size:14.8px;color:var(--c-ink-2)}
.card__foot{margin-top:auto;padding-top:16px}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:5px 12px;
  border-radius:12px;background:var(--c-primary-50);color:var(--c-primary);
}
.badge--trust{background:rgba(46,158,126,.12);color:#1F7A5F}
.badge--accent{background:var(--c-accent-50);color:#B85718}

/* 指标 */
.metrics{border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:52px 0 44px}
.metrics__grid{display:grid;grid-template-columns:repeat(4,1fr)}
.metrics__item{padding:0 28px;border-left:1px solid var(--c-line)}
.metrics__item:first-child{border-left:0;padding-left:0}
.metrics__num{font-size:38px;font-weight:700;color:var(--c-primary);line-height:1.1;font-variant-numeric:tabular-nums}
.metrics__num small{font-size:16px;font-weight:600;margin-left:4px;color:var(--c-ink-2)}
.metrics__label{margin-top:8px;font-size:14px;color:var(--c-ink-2)}
.metrics__note{margin-top:28px;text-align:right;font-size:12px;color:var(--c-ink-3)}

/* FAQ 手风琴 */
.accordion{border:0;background:transparent;margin:0}
.accordion-item{
  border:1px solid var(--c-line);border-radius:var(--r-btn);margin-bottom:12px;background:#fff;
  box-shadow:var(--sh-1);overflow:hidden;transition:border-color var(--t) var(--ease);
}
.accordion-title{
  position:relative;display:block;padding:18px 58px 18px 22px;font-size:16px;font-weight:600;color:var(--c-ink);
  border:0;background:#fff;transition:background-color var(--t) var(--ease),color var(--t) var(--ease);
}
.accordion-title::before,.accordion-title::after{display:none}
.accordion-title:hover{background:var(--c-bg-soft);color:var(--c-primary)}
.accordion-content{border-top:1px solid var(--c-line);background:var(--c-bg-soft);padding:18px 22px;color:var(--c-ink-2);font-size:15.5px}
.accordion-content p{margin-bottom:10px}
.accordion-content p:last-child{margin-bottom:0}
.accordion-item.is-active{border-color:#CFE0E6;border-left:3px solid var(--c-primary)}
.faq-icon{position:absolute;right:20px;top:50%;width:20px;height:20px;transform:translateY(-50%)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:2px;top:9px;width:16px;height:1.5px;background:var(--c-primary);
  transition:transform var(--t) var(--ease),background-color var(--t) var(--ease);
}
.faq-icon::after{transform:rotate(90deg)}
.accordion-item.is-active .faq-icon::after{transform:rotate(0deg);background:var(--c-accent)}
.accordion-item.is-active .faq-icon::before{background:var(--c-accent)}

/* CTA 带 */
.cta-band{position:relative;background:var(--c-primary-700);color:#fff;padding:64px 0;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;opacity:.18;
}
.cta-band .grid-container{position:relative;z-index:1}
.cta-band__inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.82);font-size:15.5px;margin:0;max-width:620px}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.cta-band .btn--accent{box-shadow:var(--sh-2)}

/* 隐私说明 */
.privacy-block{background:var(--c-bg-alt);padding:34px 0;border-bottom:1px solid var(--c-line)}
.privacy-block p{font-size:13.5px;color:var(--c-ink-2);margin-bottom:8px;max-width:900px}
.privacy-block a{color:var(--c-primary);border-bottom:1px solid rgba(22,101,127,.35)}

/* 表单与弹层 */
.reveal.form-modal{width:520px;max-width:calc(100% - 32px);border-radius:var(--r-modal);padding:34px 30px 30px;box-shadow:var(--sh-3)}
.form-modal h2{font-size:20px;margin-bottom:10px}
.form-modal .modal-sub{font-size:14px;color:var(--c-ink-2);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.field .req{color:var(--c-accent);margin-left:4px}
.field input[type="text"],.field input[type="tel"],.field input[type="email"],.field textarea{
  width:100%;height:46px;padding:0 14px;font-size:15px;color:var(--c-ink);
  border:1px solid var(--c-line);border-radius:var(--r-btn);background:#fff;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,101,127,.14)}
.field .hint{font-size:12.5px;color:var(--c-ink-3);margin-top:6px}
.checkline{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--c-ink-2);margin:18px 0 8px}
.checkline input{width:18px;height:18px;margin-top:3px;flex:none;accent-color:var(--c-primary)}
.form-modal .btn--block{margin-top:12px}
.close-button{
  position:absolute;top:12px;right:12px;width:40px;height:40px;display:flex;align-items:center;justify-content:center;
  background:transparent;border:0;cursor:pointer;color:var(--c-ink-2);
}
.close-button svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round}
.close-button:hover{color:var(--c-accent)}
.reveal-overlay{background:rgba(11,40,52,.55)}

/* 页脚 */
.site-footer{position:relative;background:var(--c-primary-700);color:#fff;border-top:3px solid var(--c-accent)}
.footer-main{padding:64px 0 44px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .brand{color:#fff;justify-self:start}
.site-footer .brand__text-a{color:#fff}
.site-footer .brand__text-b{color:var(--c-accent)}
.footer-brand p{font-size:13.5px;color:rgba(255,255,255,.74);margin:16px 0 8px;max-width:320px;line-height:1.75}
.footer-col h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a,.footer-col ul li span{font-size:14px;color:rgba(255,255,255,.78);line-height:1.6}
.footer-col ul li a:hover{color:var(--c-accent);border-bottom:1px solid var(--c-accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.12);
}
.footer-bottom span{font-size:13px;color:rgba(255,255,255,.7)}
.footer-bottom__links{display:flex;flex-wrap:wrap;gap:20px}
.footer-bottom__links a{font-size:13px;color:rgba(255,255,255,.78)}
.footer-bottom__links a:hover{color:var(--c-accent);border-bottom:1px solid var(--c-accent)}

/* 响应式 */
@media (max-width:1199px){
  .grid-container{padding-left:26px;padding-right:26px}
  h1{font-size:36px}
  h2{font-size:28px}
}
@media (max-width:1023px){
  body{font-size:16.5px}
  .header-inner{grid-template-columns:44px 1fr 44px;gap:10px;height:64px}
  .nav-side--left{display:none}
  .nav-side--right{justify-content:flex-end;gap:0}
  .nav-side--right .nav-list,.nav-side--right .nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .brand__mark{width:30px;height:30px}
  .brand__text{font-size:17px}
  .section{padding:64px 0}
  .intro{padding-top:52px}
  h1{font-size:32px}
  h2{font-size:26px}
  h3{font-size:20px}
  .zrow{margin-bottom:52px}
  .zrow__media,.zrow__body{order:1}
  .zrow__media{margin-bottom:22px}
  .zrow--reverse .zrow__media{order:1}
  .zrow--reverse .zrow__body{order:2}
  .card-grid .cell{margin-bottom:22px}
  .card-grid .cell:last-child{margin-bottom:0}
  .metrics__grid{grid-template-columns:repeat(2,1fr);row-gap:32px}
  .metrics__item{border-left:0;padding:0}
  .metrics__item:nth-child(1),.metrics__item:nth-child(3){border-right:1px solid var(--c-line)}
  .metrics__note{text-align:left}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band h2{font-size:22px}
  .page-head{padding:28px 0 26px}
  .page-head__title{font-size:21px}
}
@media (max-width:639px){
  .grid-container{padding-left:16px;padding-right:16px}
  body{font-size:16px;line-height:1.78}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .section{padding:48px 0}
  .section--tight{padding:44px 0}
  .breadcrumb{font-size:12.5px}
  .lead{font-size:16px}
  .metrics__num{font-size:32px}
  .metrics__grid{grid-template-columns:repeat(2,1fr);row-gap:26px}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .footer-col{padding:20px 0;border-top:1px solid rgba(255,255,255,.12)}
  .footer-brand{padding-bottom:20px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band{padding:48px 0}
  .cta-band__actions .btn{width:100%}
  .cta-band__actions{width:100%}
  .intro-actions .btn{width:100%}
  .form-modal{padding:28px 20px 24px}
  .accordion-title{padding:16px 52px 16px 18px;font-size:15.5px}
  .accordion-content{padding:16px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category4 */
/* ============ 设计变量层 ============ */
:root{
  --c-primary:#16657F;
  --c-primary-700:#0E4C60;
  --c-primary-50:#E8F1F4;
  --c-accent:#E4752B;
  --c-accent-50:#FDF0E6;
  --c-trust:#2E9E7E;
  --c-ink:#16262E;
  --c-ink-2:#4E6068;
  --c-ink-3:#8A979D;
  --c-line:#E2EAEC;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F4F8F9;
  --c-bg-soft:#FAFCFC;
  --c-danger:#C0392B;
  --sh-1:0 1px 2px rgba(14,60,74,.06);
  --sh-2:0 6px 18px rgba(14,60,74,.08);
  --sh-3:0 14px 36px rgba(14,60,74,.10);
  --r-card:12px;
  --r-btn:8px;
  --r-img:10px;
  --r-modal:16px;
  --sec-y:88px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}

/* ============ 基础重置层 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  font-weight:400;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
svg{display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease)}
a:hover{color:var(--c-primary-700)}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:600;line-height:1.32;letter-spacing:0}
h1{font-size:40px;font-weight:700}
h2{font-size:30px}
h3{font-size:22px}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
button{font:inherit;color:inherit;cursor:pointer}
input,select,textarea{font:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
::selection{background:var(--c-primary-50);color:var(--c-primary-700)}

/* ============ 容器与栅格辅助层 ============ */
.grid-container{
  max-width:1200px;
  width:100%;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.section{padding:var(--sec-y) 0}
.section--alt{background:var(--c-bg-alt)}
.section--tight{padding-top:56px}
.section-head{max-width:780px;margin-bottom:40px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--c-ink-2);font-size:16.5px;margin:0}

/* ============ 导航层 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  min-height:72px;
}
.nav-side{display:flex;align-items:center;gap:8px}
.nav-side--left{justify-content:flex-end}
.nav-side--right{justify-content:flex-start}
.nav-list{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:72px;
  padding:0 12px;
  font-size:15px;
  color:var(--c-ink-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:20px;
  height:2px;
  background:var(--c-accent);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--c-primary);font-weight:600}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.brand__mark{width:34px;height:34px;flex:none}
.brand__text{font-size:19px;font-weight:700;line-height:1.2}
.brand__text-a{color:var(--c-ink)}
.brand__text-b{color:var(--c-primary)}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:var(--c-ink);stroke-width:1.5;stroke-linecap:round}
.nav-toggle:hover{border-color:var(--c-primary)}
.mobile-panel{
  display:none;
  position:absolute;
  left:0;
  right:0;
  top:100%;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  padding:8px 16px 20px;
}
.mobile-panel.is-open{display:block}
.mobile-panel ul{list-style:none;margin:0;padding:0}
.mobile-panel li{border-bottom:1px solid var(--c-line)}
.mobile-panel a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 4px;
  font-size:16px;
  color:var(--c-ink);
}
.mobile-panel a[aria-current="page"]{color:var(--c-primary);font-weight:600}
.mobile-panel__cta{padding-top:16px}

/* ============ 按钮层 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  text-decoration:none;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--lg{height:52px;padding:0 28px;font-size:16px}
.btn--block{width:100%}
.btn--primary{background:var(--c-primary);color:#fff}
.btn--primary:hover{background:var(--c-primary-700);color:#fff}
.btn--accent{background:var(--c-accent);color:#fff}
.btn--accent:hover{background:#cf6420;color:#fff}
.btn--ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn--ghost:hover{background:var(--c-primary-50);color:var(--c-primary)}
.btn--link{height:auto;padding:0;background:none;border:0;color:var(--c-primary);font-weight:600;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.btn--link:hover{color:var(--c-accent);text-decoration-thickness:2px}
.nav-cta{margin-left:8px}

/* ============ 页头条层 ============ */
.page-head{
  position:relative;
  padding:18px 0 34px;
  background-color:var(--c-bg-alt);
  background-image:linear-gradient(92deg,rgba(244,248,249,.98) 0%,rgba(244,248,249,.9) 55%,rgba(244,248,249,.68) 100%),url("/assets/images/backpic/back-3.png");
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--c-line);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--c-ink-3);
  margin-bottom:14px;
}
.breadcrumb a{color:var(--c-ink-2)}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{color:var(--c-ink-3)}
.breadcrumb .current{color:var(--c-ink-2)}
.page-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--c-primary-50);
  color:var(--c-primary);
  border-radius:12px;
  padding:5px 14px;
  font-size:12.5px;
  font-weight:600;
  margin-bottom:14px;
}
.page-head h1{font-size:30px;max-width:900px}
.page-head__sub{
  margin-top:14px;
  margin-bottom:0;
  color:var(--c-ink-2);
  font-size:16px;
  max-width:820px;
}

/* ============ 引言与数据层 ============ */
.intro-grid{
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  gap:56px;
  align-items:start;
}
.intro-lead{font-size:17.5px;line-height:1.9;color:var(--c-ink)}
.intro-lead p+p{margin-top:18px}
.stat-list{list-style:none;margin:0;padding:0}
.stat-item{padding:18px 0;border-top:1px solid var(--c-line)}
.stat-item:last-child{border-bottom:1px solid var(--c-line)}
.stat-num{
  font-size:32px;
  font-weight:700;
  color:var(--c-primary);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.stat-label{font-size:13.5px;color:var(--c-ink-2);margin-top:6px}
.stat-note{margin-top:14px;font-size:12px;color:var(--c-ink-3);line-height:1.7}

/* ============ 双列文字层 ============ */
.twocol{display:grid;grid-template-columns:1fr 1fr;gap:0}
.twocol__col{padding-right:48px;min-width:0}
.twocol__col+.twocol__col{padding-right:0;padding-left:48px;border-left:1px solid var(--c-line)}
.twocol h3{margin-bottom:14px}
.twocol p{color:var(--c-ink-2);font-size:16px}
.twocol figure{margin:24px 0 0}
.twocol img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-img);
  transition:transform .2s var(--ease);
}
.twocol img:hover{transform:scale(1.02)}
figcaption{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:10px}
.clean-list{list-style:none;padding:0;margin:18px 0 0}
.clean-list li{position:relative;padding-left:20px;margin-bottom:12px;color:var(--c-ink-2);font-size:15.5px}
.clean-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:7px;
  height:7px;
  background:var(--c-accent);
  border-radius:2px;
}

/* ============ 条目化说明层 ============ */
.spec-list{border-top:1px solid var(--c-line)}
.spec-head{
  display:grid;
  grid-template-columns:220px 1fr 110px;
  gap:32px;
  padding:12px 0;
  border-bottom:1px solid var(--c-line);
  font-size:12.5px;
  color:var(--c-ink-3);
  letter-spacing:.02em;
}
.spec-row{
  display:grid;
  grid-template-columns:220px 1fr 110px;
  gap:32px;
  padding:20px 0;
  border-bottom:1px solid var(--c-line);
  align-items:baseline;
}
.spec-row__name{font-weight:600;font-size:16px;color:var(--c-ink)}
.spec-row__desc{color:var(--c-ink-2);font-size:15.5px}
.spec-row__time{
  font-size:13px;
  color:var(--c-ink-3);
  text-align:right;
  font-variant-numeric:tabular-nums;
}

/* ============ FAQ 层 ============ */
.faq{max-width:920px}
.faq-item{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:#CFDDE1;box-shadow:var(--sh-1)}
.faq-item.is-open{
  background:var(--c-bg-soft);
  border-color:#C9DBE1;
  box-shadow:inset 3px 0 0 var(--c-primary);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 20px;
  background:none;
  border:0;
  text-align:left;
  font-size:16.5px;
  font-weight:600;
  color:var(--c-ink);
}
.faq-icon{position:relative;width:20px;height:20px;flex:none}
.faq-icon::before{content:"";position:absolute;left:0;top:9.25px;width:20px;height:1.5px;background:var(--c-primary)}
.faq-icon::after{content:"";position:absolute;left:9.25px;top:0;width:1.5px;height:20px;background:var(--c-primary);transition:transform .2s var(--ease)}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s var(--ease)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a>div{overflow:hidden}
.faq-a p{margin:0;padding:0 20px 20px;color:var(--c-ink-2);font-size:15.5px;line-height:1.85}

/* ============ 合规声明层 ============ */
.notice{
  background:var(--c-bg-soft);
  border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-card) var(--r-card) 0;
  padding:32px 40px;
}
.notice h2{font-size:22px;margin-bottom:14px}
.notice p{color:var(--c-ink-2);font-size:16px}
.notice p+p{margin-top:12px}

/* ============ 表单层 ============ */
.form-panel{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:32px;
  max-width:760px;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-field{margin-bottom:20px;min-width:0}
.form-field--full{grid-column:1/-1}
.form-field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.req{color:var(--c-accent)}
.form-field input[type="text"],
.form-field input[type="tel"],
.form-field input[type="email"],
.form-field select,
.form-field textarea{
  width:100%;
  height:48px;
  padding:0 14px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:#fff;
  color:var(--c-ink);
  font-size:16px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.form-field textarea{height:auto;min-height:128px;padding:12px 14px;line-height:1.75;resize:vertical}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(22,101,127,.08);
}
.form-hint{font-size:12.5px;color:var(--c-ink-3);margin-top:8px}
.form-submit{margin-top:8px}
.check-row{
  display:flex;
  align-items:flex-start;
  gap:10px;
  margin-top:12px;
  font-size:13px;
  color:var(--c-ink-2);
  line-height:1.7;
}
.check-row input[type="checkbox"]{
  width:18px;height:18px;flex:none;margin-top:3px;
  accent-color:var(--c-primary);
}
.check-row a{text-decoration:underline;text-underline-offset:3px}
.privacy-note{font-size:12.5px;color:var(--c-ink-3);margin-top:10px}

/* ============ CTA 带层 ============ */
.cta-band{
  background-color:var(--c-primary-700);
  background-image:linear-gradient(90deg,rgba(14,76,96,.94),rgba(14,76,96,.86)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  padding:64px 0;
  color:#fff;
}
.cta-band__inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.78);margin:0;max-width:580px;font-size:15.5px}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚层 ============ */
.site-footer{background:var(--c-primary-700);color:#fff;border-top:3px solid var(--c-accent)}
.footer-main{padding:64px 0 48px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand__text-a{color:#fff}
.footer-brand .brand__text-b{color:var(--c-accent)}
.footer-brand p{color:rgba(255,255,255,.72);font-size:14px;line-height:1.8;margin-top:16px;max-width:340px}
.footer-col h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col span{color:rgba(255,255,255,.72);font-size:14px}
.footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.footer-bottom__links{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom__links a{color:rgba(255,255,255,.6)}
.footer-bottom__links a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px}

/* ============ 弹层（Reveal）层 ============ */
.reveal{
  border:none;
  border-radius:var(--r-modal);
  padding:32px;
  background:#fff;
  box-shadow:var(--sh-3);
  width:min(520px,calc(100% - 32px));
}
.reveal-overlay{background:rgba(11,40,52,.55)}
.reveal h2{font-size:20px}
.modal-sub{font-size:14px;color:var(--c-ink-2);margin:8px 0 22px}
.modal-close{
  position:absolute;
  top:12px;
  right:12px;
  width:40px;
  height:40px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:0;
  border-radius:var(--r-btn);
  transition:background-color .18s var(--ease);
}
.modal-close svg{width:20px;height:20px;fill:none;stroke:var(--c-ink-2);stroke-width:1.5;stroke-linecap:round}
.modal-close:hover{background:var(--c-bg-alt)}
.modal-overlay-fallback{position:fixed;inset:0;background:rgba(11,40,52,.55);z-index:1005}
.reveal.is-open{
  display:block;
  position:fixed;
  left:50%;
  top:50%;
  transform:translate(-50%,-50%);
  z-index:1006;
  max-height:86vh;
  overflow:auto;
}

/* ============ 响应式层 ============ */
@media (max-width:1199px){
  :root{--sec-y:80px}
}
@media (max-width:1023px){
  :root{--sec-y:64px}
  .grid-container{padding-left:24px;padding-right:24px}
  h1{font-size:32px}
  h2{font-size:26px}
  h3{font-size:20px}
  .page-head h1{font-size:27px}
  .nav-side--left .nav-list,
  .nav-side--right .nav-list,
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .intro-grid{grid-template-columns:1fr;gap:40px}
  .twocol{grid-template-columns:1fr}
  .twocol__col{padding-right:0}
  .twocol__col+.twocol__col{
    border-left:0;
    border-top:1px solid var(--c-line);
    padding-left:0;
    padding-top:36px;
    margin-top:36px;
  }
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:52px 0}
  .cta-band h2{font-size:24px}
}
@media (max-width:767px){
  .form-grid{grid-template-columns:1fr}
  .spec-head{display:none}
  .spec-row{grid-template-columns:1fr;gap:8px;padding:18px 0}
  .spec-row__time{text-align:left}
}
@media (max-width:639px){
  :root{--sec-y:48px}
  body{font-size:16px;line-height:1.78}
  .grid-container{padding-left:16px;padding-right:16px}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .page-head{padding:14px 0 26px}
  .page-head h1{font-size:24px}
  .page-head__sub{font-size:15px}
  .breadcrumb a{min-height:44px;display:inline-flex;align-items:center}
  .brand__text{font-size:17px}
  .brand__mark{width:30px;height:30px}
  .intro-lead{font-size:16.5px}
  .stat-num{font-size:28px}
  .notice{padding:24px 22px}
  .form-panel{padding:22px 18px}
  .faq-q{font-size:16px;padding:16px}
  .faq-a p{padding:0 16px 16px}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .footer-brand{padding-bottom:24px}
  .footer-col{padding:22px 0;border-top:1px solid rgba(255,255,255,.12)}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band__inner{flex-direction:column;align-items:flex-start;gap:24px}
  .btn{width:100%}
  .btn--sm{width:auto}
  .cta-band__actions{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
}