/* roulang page: index */
:root{
  --c-primary:#1B62D6;
  --c-primary-d:#12489F;
  --c-primary-l:#7CB0F2;
  --c-tint:#EEF5FF;
  --c-bg:#F8FBFF;
  --c-ink:#0E2A47;
  --c-text:#4A5B72;
  --c-muted:#8496AC;
  --c-line:#E3EBF6;
  --c-accent:#F2A03D;
  --c-accent-d:#B26A12;
  --c-green:#17A88B;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-panel:20px;
  --sh-1:0 1px 2px rgba(14,42,71,.05),0 2px 8px rgba(14,42,71,.04);
  --sh-2:0 8px 24px rgba(27,98,214,.08);
  --sh-3:0 16px 40px rgba(27,98,214,.14);
  --sp-section:56px;
}
@media (min-width:768px){:root{--sp-section:72px}}
@media (min-width:1024px){:root{--sp-section:96px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--c-bg);
  color:var(--c-text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color .16s ease,text-decoration-color .16s ease}
a:hover{text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4,h5{margin:0;color:var(--c-ink);font-weight:700}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 24px}}

.section{padding:var(--sp-section) 0}
.section--tint{background:var(--c-tint)}
.section--white{background:#fff}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:32px}
.section-head h2{font-size:clamp(22px,3vw,32px);line-height:1.35}
.section-head .section-sub{margin:8px 0 0;color:var(--c-muted);font-size:14px}
.section-head--center{justify-content:center;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:.04em;margin-bottom:12px}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--c-accent);border-radius:2px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:0 2px 14px rgba(14,42,71,.05);
}
.header-inner{display:flex;align-items:center;gap:18px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand:hover{text-decoration:none}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(140deg,var(--c-primary),#3E82EA);
  display:flex;align-items:center;justify-content:center;color:#fff;
  box-shadow:0 6px 14px rgba(27,98,214,.24);
}
.brand-mark i{font-size:17px}
.brand-text{font-size:16px;font-weight:800;color:var(--c-ink);letter-spacing:.01em;line-height:1.2}
.brand-sub{display:block;font-size:11px;font-weight:500;color:var(--c-muted);letter-spacing:.12em}
.main-nav{display:none;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:22px 14px;
  font-size:15px;font-weight:600;color:var(--c-text);
}
.nav-link:hover{color:var(--c-primary);text-decoration:none}
.nav-link.is-active{color:var(--c-primary)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.header-cta{display:none;margin-left:8px}
.nav-toggle{
  margin-left:auto;width:42px;height:42px;border:1px solid var(--c-line);
  background:#fff;border-radius:12px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-menu{display:none;border-top:1px solid var(--c-line);background:#fff}
.mobile-menu.is-open{display:block}
.mobile-menu ul{padding:8px 20px 18px}
.mobile-menu a{
  display:block;padding:13px 0;font-size:15px;font-weight:600;color:var(--c-ink);
  border-bottom:1px dashed var(--c-line);
}
.mobile-menu a:hover{color:var(--c-primary);text-decoration:none}
.mobile-menu .mobile-cta{
  display:block;text-align:center;margin-top:14px;border:0;background:var(--c-primary);
  color:#fff;padding:13px;border-radius:var(--r-btn);font-weight:600;
}
.mobile-menu .mobile-cta:hover{color:#fff;background:var(--c-primary-d)}
@media (min-width:900px){
  .main-nav{display:flex}
  .header-cta{display:inline-flex}
  .nav-toggle{display:none}
  .mobile-menu{display:none!important}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:background-color .16s ease,color .16s ease,transform .16s ease,box-shadow .16s ease,border-color .16s ease;
  text-align:center;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:none}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(27,98,214,.22)}
.btn-primary:hover{background:var(--c-primary-d);color:#fff}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:rgba(27,98,214,.4)}
.btn-ghost:hover{background:var(--c-tint);border-color:var(--c-primary);color:var(--c-primary-d)}
.btn-accent{background:var(--c-accent);color:#4A2C05}
.btn-accent:hover{background:#E1922F;color:#4A2C05}
.btn-block{width:100%}
@media (max-width:639px){.btn{height:48px}}

.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary)}
.text-link i{transition:transform .16s ease;font-size:12px}
.text-link:hover{text-decoration:none}
.text-link:hover i{transform:translateX(4px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:3px 10px;border-radius:999px;background:var(--c-tint);
  color:var(--c-primary);font-size:12px;font-weight:600;line-height:1.7;
}
.badge--accent{background:rgba(242,160,61,.14);color:var(--c-accent-d)}
.badge--green{background:rgba(23,168,139,.12);color:#0E7B66}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(150deg,#F8FBFF 0%,#EEF5FF 100%);
  padding:44px 0 52px;
}
.hero::after{
  content:"";position:absolute;right:-120px;bottom:-140px;width:520px;height:520px;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 400'%3E%3Cg fill='none' stroke='%231B62D6' stroke-width='1.2'%3E%3Cpath d='M40 300c40-70 90-110 160-120s130 10 180 60'/%3E%3Cpath d='M0 340c50-80 110-125 190-135s150 15 210 70'/%3E%3Cpath d='M80 250c35-55 80-85 140-95'/%3E%3C/g%3E%3C/svg%3E") no-repeat center/contain;
  opacity:.08;pointer-events:none;
}
.hero-grid{position:relative;z-index:1}
.hero h1{
  font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:800;letter-spacing:-.01em;
  margin-bottom:14px;
}
.hero-lead{font-size:17px;color:var(--c-text);margin-bottom:26px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--c-line);padding-top:22px;
}
.hero-stat{padding-right:26px;margin-right:26px;border-right:1px solid var(--c-line)}
.hero-stat:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-stat strong{display:block;font-size:28px;font-weight:800;color:var(--c-ink);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-stat span{font-size:13px;color:var(--c-muted)}
.hero-visual{margin-top:34px;position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--sh-2);
}
.hero-visual::after{
  content:"";position:absolute;left:0;bottom:14px;width:140px;height:8px;border-radius:8px;
  background:linear-gradient(90deg,rgba(27,98,214,.85),rgba(27,98,214,0));
}
@media (min-width:1024px){
  .hero{padding:72px 0 84px}
  .hero-visual{margin-top:0}
}

/* ---------- 特性 5:7 ---------- */
.split-57{display:grid;gap:32px}
@media (min-width:1024px){
  .split-57{grid-template-columns:5fr 7fr;gap:56px;align-items:start}
}
.feature-list{border-top:1px solid var(--c-line)}
.feature-item{
  position:relative;padding:20px 18px 20px 0;border-bottom:1px solid var(--c-line);
  transition:padding-left .2s ease,background-color .2s ease;
}
.feature-item::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;
  background:var(--c-primary);opacity:0;transition:opacity .2s ease;
}
.feature-item:hover{padding-left:18px;background:#fff}
.feature-item:hover::before{opacity:1}
.feature-num{
  display:inline-block;font-size:13px;font-weight:800;color:var(--c-accent-d);
  background:rgba(242,160,61,.14);border-radius:999px;padding:2px 10px;margin-bottom:8px;
  font-variant-numeric:tabular-nums;
}
.feature-item h3{font-size:17px;font-weight:600;margin-bottom:6px}
.feature-item p{font-size:14.5px;color:var(--c-text);margin:0}

/* ---------- 三步流程 ---------- */
.steps{display:grid;gap:24px;margin-top:36px}
@media (min-width:768px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{position:relative;padding-left:56px}
@media (min-width:768px){.step{padding-left:0;padding-top:0}}
.step-num{
  width:40px;height:40px;border-radius:50%;background:#fff;color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-weight:800;
  box-shadow:var(--sh-1);border:1px solid var(--c-line);font-variant-numeric:tabular-nums;
  position:absolute;left:0;top:0;
}
@media (min-width:768px){
  .step-num{position:static;margin-bottom:14px}
  .step::after{
    content:"";position:absolute;left:56px;right:-24px;top:20px;height:0;
    border-top:2px dashed rgba(27,98,214,.28);
  }
  .step:last-child::after{display:none}
}
.step h3{font-size:18px;font-weight:600;margin-bottom:6px}
.step p{font-size:14.5px;margin:0;color:var(--c-text)}
.step-line{display:block;width:1px;height:24px;background:rgba(27,98,214,.3);margin:10px 0 10px 20px}
@media (min-width:768px){.step-line{display:none}}

.inner-figure{display:grid;gap:28px;margin-top:44px;align-items:center}
@media (min-width:1024px){.inner-figure{grid-template-columns:6fr 4fr;gap:48px}}
.inner-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1)}
.inner-figure .check-list li{
  position:relative;padding-left:26px;margin-bottom:10px;font-size:15px;color:var(--c-text);
}
.inner-figure .check-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:2px;color:var(--c-primary);font-size:13px;
}

/* ---------- 精选错落 ---------- */
.feature-grid{display:grid;gap:20px}
@media (min-width:1024px){.feature-grid{grid-template-columns:8fr 4fr}}
.feature-main,.feature-side{display:flex;flex-direction:column;gap:20px}
.card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(27,98,214,.22)}
.card-media{position:relative;background:var(--c-tint)}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.card-media .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94)}
.card-body{padding:22px}
.card-body h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px}
.card-body h3 a{color:var(--c-ink)}
.card-body h3 a:hover{color:var(--c-primary);text-decoration:none}
.card-body p{font-size:14.5px;color:var(--c-text);margin-bottom:14px}
.card-main .card-body h3{font-size:22px}
.card-main .card-body p{font-size:15px}
.card-side .card-body{padding:18px}
.card-side .card-body h3{font-size:16.5px;margin-bottom:6px}
.card-side .card-body p{font-size:14px;margin-bottom:10px}
.card-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-muted)}
.card-meta .badge{font-size:11.5px}

/* ---------- 最新信息（CMS） ---------- */
.feed-grid{display:grid;gap:18px}
@media (min-width:768px){.feed-grid{grid-template-columns:repeat(2,1fr)}}
.feed-card{
  display:flex;gap:16px;padding:18px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feed-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(27,98,214,.22)}
.feed-thumb{flex:0 0 118px;width:118px;height:88px;border-radius:10px;overflow:hidden;background:var(--c-tint)}
.feed-thumb img{width:100%;height:100%;object-fit:cover}
.feed-body{min-width:0;flex:1 1 auto}
.feed-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--c-muted);margin-bottom:6px}
.feed-title{font-size:16.5px;font-weight:600;line-height:1.55;margin-bottom:6px}
.feed-title a{color:var(--c-ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.feed-title a:hover{color:var(--c-primary);text-decoration:none}
.feed-desc{
  font-size:13.5px;color:var(--c-text);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-state{
  text-align:center;padding:46px 20px;border:1px dashed var(--c-line);border-radius:var(--r-card);
  background:#fff;
}
.empty-state i{font-size:30px;color:var(--c-primary-l);margin-bottom:12px;display:block}
.empty-state p{color:var(--c-muted);font-size:14.5px;margin-bottom:16px}
@media (max-width:519px){
  .feed-card{flex-direction:column}
  .feed-thumb{width:100%;flex:none;height:150px}
}

/* ---------- 深色数据区 ---------- */
.dark-band{
  background:#0E2A47;color:#D6E3F5;border-radius:var(--r-panel);
  padding:36px 24px;
}
@media (min-width:768px){.dark-band{padding:44px 40px}}
.dark-band h2{color:#fff}
.dark-band p{color:#A9C2DE}
.dark-metrics{display:grid;gap:20px;margin-top:28px}
@media (min-width:640px){.dark-metrics{grid-template-columns:repeat(3,1fr)}}
.dark-metric{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:14px;padding:20px;
}
.dark-metric strong{
  display:block;font-size:30px;font-weight:800;color:var(--c-accent);
  font-variant-numeric:tabular-nums;line-height:1.2;margin-bottom:4px;
}
.dark-metric span{font-size:13.5px;color:#A9C2DE}

/* ---------- logo 墙 ---------- */
.logo-wall{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:34px}
@media (min-width:640px){.logo-wall{grid-template-columns:repeat(3,1fr)}}
@media (min-width:1024px){.logo-wall{grid-template-columns:repeat(6,1fr)}}
.logo-cell{
  height:64px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:14px;background:#fff;
  color:var(--c-muted);font-size:14px;font-weight:600;letter-spacing:.04em;
  filter:grayscale(1);opacity:.72;transition:filter .2s ease,opacity .2s ease,box-shadow .2s ease;
}
.logo-cell:hover{filter:grayscale(0);opacity:1;box-shadow:var(--sh-1);color:var(--c-ink)}

/* ---------- 评价 ---------- */
.quotes{display:grid;gap:18px;margin-top:32px}
@media (min-width:768px){.quotes{grid-template-columns:repeat(2,1fr)}}
.quote{
  background:var(--c-tint);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 24px 22px;position:relative;
}
.quote::before{
  content:"\201C";position:absolute;left:18px;top:2px;
  font-size:56px;line-height:1;color:rgba(27,98,214,.18);font-family:Georgia,serif;
}
.quote p{font-size:15px;color:var(--c-text);margin-bottom:18px}
.quote-author{display:flex;align-items:center;gap:12px}
.quote-avatar{
  width:40px;height:40px;border-radius:50%;background:#fff;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-weight:700;font-size:15px;
}
.quote-author strong{display:block;font-size:14.5px;color:var(--c-ink)}
.quote-author span{font-size:12.5px;color:var(--c-muted)}

/* ---------- FAQ ---------- */
.accordion{border:0;background:transparent;margin:0}
.accordion .accordion-item{
  border:1px solid var(--c-line);border-radius:12px;background:#fff;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
}
.accordion .accordion-title{
  border:0;padding:18px 54px 18px 24px;font-size:16px;font-weight:600;color:var(--c-ink);
  position:relative;background:#fff;transition:background-color .2s ease;
}
.accordion .accordion-title::before{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  color:var(--c-primary);font-size:20px;font-weight:600;display:block;width:auto;height:auto;
  margin:0;background:none;border:0;
}
.accordion .accordion-title:hover{background:var(--c-tint)}
.accordion .accordion-item.is-active .accordion-title{background:#fff}
.accordion .accordion-item.is-active .accordion-title::before{content:"−"}
.accordion .accordion-item.is-active{border-color:rgba(27,98,214,.28)}
.accordion .accordion-item.is-active .accordion-title{
  border-left:3px solid var(--c-primary);padding-left:21px;
}
.accordion .accordion-content{
  border:0;padding:0 24px 20px;background:#fff;color:var(--c-text);font-size:15px;line-height:1.85;
}
.accordion .accordion-content p{margin-bottom:.7em}

/* ---------- CTA 表单 ---------- */
.cta-panel{
  background:var(--c-tint);border-radius:var(--r-panel);padding:32px 22px;
  display:grid;gap:28px;
}
@media (min-width:1024px){.cta-panel{grid-template-columns:1fr 1fr;padding:48px 44px;gap:48px;align-items:center}}
.cta-panel h2{font-size:clamp(22px,3vw,30px);margin-bottom:12px}
.cta-panel p{font-size:15px;margin:0}
.form-card{
  background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-2);padding:24px;
  border:1px solid var(--c-line);
}
.form-row{display:grid;gap:12px}
@media (min-width:640px){.form-row{grid-template-columns:1fr auto}}
.form-label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.form-input{
  width:100%;height:44px;border-radius:12px;border:1px solid var(--c-line);
  background:#fff;padding:0 14px;font-size:15px;color:var(--c-ink);
  transition:border-color .16s ease,box-shadow .16s ease;
}
.form-input::placeholder{color:var(--c-muted)}
.form-input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(27,98,214,.14)}
.form-tip{font-size:12.5px;color:var(--c-muted);margin:12px 0 0}
.form-result{margin-top:10px;font-size:13.5px;color:var(--c-primary-d);min-height:20px}
.qr-box{
  margin-top:18px;display:flex;align-items:center;gap:14px;
}
.qr-thumb{
  width:88px;height:88px;border-radius:12px;border:1px solid var(--c-line);
  background:#fff;display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);font-size:26px;flex-shrink:0;
}
.qr-box span{font-size:13px;color:var(--c-muted)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#fff;border-top:1px solid var(--c-line);margin-top:var(--sp-section);
  padding-top:56px;
}
.footer-grid{display:grid;gap:32px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr}}
.footer-brand p{font-size:14px;color:var(--c-text);margin:14px 0 0;max-width:320px}
.footer-contact{font-size:13.5px;color:var(--c-muted);margin-top:12px;line-height:2}
.footer-contact i{color:var(--c-primary);width:18px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--c-ink)}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--c-text)}
.footer-links a:hover{color:var(--c-primary)}
.footer-bottom{
  margin-top:40px;border-top:1px solid var(--c-line);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--c-muted);
}
.footer-bottom a{color:var(--c-muted)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ---------- 底部 Tab（移动） ---------- */
.bottom-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;
  background:#fff;border-top:1px solid var(--c-line);
  box-shadow:0 -6px 20px rgba(14,42,71,.07);
  padding-bottom:env(safe-area-inset-bottom);
}
.bottom-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;font-size:11.5px;color:var(--c-muted);position:relative;
}
.bottom-tab a i{font-size:19px}
.bottom-tab a.is-active{color:var(--c-primary)}
.bottom-tab a.is-active::before{
  content:"";position:absolute;top:0;width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--c-primary);
}
.bottom-tab a:hover{text-decoration:none;color:var(--c-primary)}
body{padding-bottom:72px}
@media (min-width:900px){
  .bottom-tab{display:none}
  body{padding-bottom:0}
}

/* roulang page: article */
/* ===================== 设计变量 ===================== */
:root{
  --c-primary:#1B62D6;
  --c-primary-d:#12489F;
  --c-primary-l:#7CB0F2;
  --c-tint:#EEF5FF;
  --c-bg:#F8FBFF;
  --c-ink:#0E2A47;
  --c-text:#4A5B72;
  --c-muted:#8496AC;
  --c-line:#E3EBF6;
  --c-accent:#F2A03D;
  --c-accent-ink:#B26A12;
  --c-green:#17A88B;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-input:12px;
  --r-badge:999px;
  --r-panel:20px;
  --sh-1:0 1px 2px rgba(14,42,71,.05),0 2px 8px rgba(14,42,71,.04);
  --sh-2:0 8px 24px rgba(27,98,214,.08);
  --sh-3:0 16px 40px rgba(27,98,214,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ===================== 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,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .16s var(--ease)}
a:hover{text-decoration:underline;text-underline-offset:3px}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,h5{color:var(--c-ink);font-weight:700;line-height:1.35;margin:0}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:800}
h2{font-size:clamp(22px,3vw,32px);font-weight:700}
h3{font-size:19px;font-weight:600;line-height:1.5}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(27,98,214,.16);color:var(--c-ink)}
.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}

/* ===================== 容器与板块 ===================== */
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:1024px){.container{padding-left:24px;padding-right:24px}}
.section{padding:56px 0}
@media (min-width:640px){.section{padding:72px 0}}
@media (min-width:1024px){.section{padding:88px 0}}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{margin-bottom:12px}
.section-head h2::after{content:"";display:block;width:44px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--c-primary),var(--c-primary-l));margin-top:14px}
.section-head p{margin:0;color:var(--c-text);font-size:15.5px}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease),box-shadow .16s var(--ease);
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(27,98,214,.22)}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(27,98,214,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(27,98,214,.2)}
.btn-outline{background:#fff;border-color:rgba(27,98,214,.45);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-tint);border-color:var(--c-primary);color:var(--c-primary-d);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0)}
.btn-text{height:auto;padding:0;color:var(--c-primary);background:none;border:0;font-weight:600}
.btn-text i{font-size:12px;transition:transform .18s var(--ease)}
.btn-text:hover{text-decoration:underline;text-underline-offset:3px}
.btn-text:hover i{transform:translateX(4px)}
.btn-block{width:100%}
@media (max-width:639px){
  .btn{height:48px;padding:0 20px}
}

/* ===================== 徽章与标签 ===================== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1.6;
  padding:5px 12px;border-radius:var(--r-badge);
  background:var(--c-tint);color:var(--c-primary);
}
.badge-accent{background:rgba(242,160,61,.14);color:var(--c-accent-ink)}
.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--c-green)}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:0 6px 20px rgba(14,42,71,.04);
}
.header-inner{display:flex;align-items:center;gap:16px;height:70px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  display:grid;place-items:center;color:#fff;font-size:17px;
  background:linear-gradient(135deg,#2F79E8,var(--c-primary));
  box-shadow:0 6px 14px rgba(27,98,214,.28);
}
.brand-text{display:block;font-size:17px;font-weight:800;color:var(--c-ink);letter-spacing:.2px;line-height:1.25}
.brand-sub{display:block;font-size:10px;letter-spacing:1.8px;color:var(--c-muted);line-height:1.25}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;
  padding:0 14px;border-radius:10px;font-size:15px;font-weight:600;color:var(--c-text);
  transition:color .16s var(--ease),background-color .16s var(--ease);
}
.nav-link:hover{color:var(--c-primary);background:var(--c-tint);text-decoration:none}
.nav-link.is-active{color:var(--c-primary)}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:var(--c-primary)}
.nav-cta{flex:0 0 auto;height:40px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;flex:0 0 auto;place-items:center;
  background:#fff;border:1px solid var(--c-line);border-radius:12px;
  color:var(--c-ink);font-size:17px;cursor:pointer;
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.nav-toggle:hover{border-color:rgba(27,98,214,.4);color:var(--c-primary)}

/* ===================== 移动端底部 Tab ===================== */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:#fff;border-top:1px solid var(--c-line);
  box-shadow:0 -8px 24px rgba(14,42,71,.08);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab ul{display:flex;align-items:stretch}
.mobile-tab li{flex:1}
.tab-link{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:60px;font-size:12px;color:var(--c-muted);
}
.tab-link i{font-size:19px;line-height:1}
.tab-link:hover{text-decoration:none;color:var(--c-primary)}
.tab-link.is-active{color:var(--c-primary);font-weight:600}
.tab-link.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--c-primary)}

@media (max-width:1023px){
  .mobile-tab{display:block}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom))}
  .nav-toggle{display:grid;margin-left:auto}
  .nav-cta{display:none}
  .main-nav{
    position:fixed;top:70px;left:0;right:0;z-index:85;
    flex-direction:column;align-items:stretch;gap:6px;margin-left:0;
    padding:14px 20px 22px;background:#fff;
    border-bottom:1px solid var(--c-line);
    box-shadow:0 18px 32px rgba(14,42,71,.12);
    transform:translateY(-10px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  }
  .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto}
  .nav-link{height:48px;padding:0 14px;border-radius:12px;font-size:16px}
  .nav-link.is-active{background:var(--c-tint)}
  .nav-link.is-active::after{display:none}
}

/* ===================== 页面头部 ===================== */
.page-head{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#F8FBFF 0%,#EEF5FF 100%);
  border-bottom:1px solid var(--c-line);
  padding:30px 0 42px;
}
.page-head::after{
  content:"";position:absolute;right:-140px;top:-160px;width:440px;height:440px;border-radius:50%;
  background:radial-gradient(circle,rgba(27,98,214,.12),rgba(27,98,214,0) 70%);
  pointer-events:none;
}
.page-head::before{
  content:"";position:absolute;left:-120px;bottom:-160px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,176,242,.18),rgba(124,176,242,0) 70%);
  pointer-events:none;
}
.page-head .container{position:relative;z-index:1}

/* 面包屑 */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin:0 0 20px}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;min-width:0}
.breadcrumb li+li::before{content:"/";color:#C4D4E8}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .is-current{
  color:var(--c-ink);font-weight:600;max-width:260px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
@media (max-width:639px){
  .breadcrumb .is-current{max-width:150px}
}

/* 文章头 */
.article-head{max-width:820px}
.article-head h1{font-size:clamp(23px,3.4vw,36px);line-height:1.32;margin:14px 0 16px}
.article-meta{display:flex;flex-wrap:wrap;gap:18px;font-size:13px;color:var(--c-muted)}
.article-meta i{margin-right:6px;color:var(--c-primary-l)}
.article-meta time{font-variant-numeric:tabular-nums}

/* ===================== 文章布局 ===================== */
.article-layout{padding:44px 0 0}
.article-col{min-width:0}
.article-side{min-width:0}

/* 正文卡片 */
.article-body{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:36px 40px;
}
.article-body p{font-size:16px;line-height:1.9;margin:0 0 1em;color:var(--c-text)}
.article-body h2{
  position:relative;font-size:22px;line-height:1.45;margin:32px 0 12px;padding-left:15px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:18px;margin:26px 0 10px}
.article-body h4{font-size:16.5px;margin:22px 0 8px}
.article-body ul{list-style:disc;padding-left:1.4em;margin:0 0 1.1em}
.article-body ol{list-style:decimal;padding-left:1.4em;margin:0 0 1.1em}
.article-body li{margin:.35em 0;line-height:1.9}
.article-body li::marker{color:var(--c-primary);font-weight:600}
.article-body blockquote{
  margin:20px 0;padding:16px 20px;background:var(--c-tint);
  border-left:3px solid var(--c-primary);border-radius:0 12px 12px 0;color:var(--c-ink);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:20px auto;box-shadow:var(--sh-1)}
.article-body a{font-weight:600;border-bottom:1px solid rgba(27,98,214,.35)}
.article-body a:hover{border-bottom-color:var(--c-primary);text-decoration:none}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:28px 0}
.article-body table{
  width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px;
  border:1px solid var(--c-line);border-radius:12px;overflow:hidden;
}
.article-body th{background:var(--c-tint);color:var(--c-ink);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--c-line)}
.article-body tr:last-child td{border-bottom:0}
.article-body pre{
  background:#0E2A47;color:#E8F0FB;border-radius:12px;padding:16px 18px;overflow-x:auto;
  font-size:13.5px;line-height:1.7;
}
.article-body code{font-size:.94em}
@media (max-width:767px){
  .article-body{padding:24px 18px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}

/* 标签行 */
.article-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:24px 0 0}
.tag-label{font-size:13px;color:var(--c-muted)}
.tag{
  font-size:13px;padding:5px 14px;border-radius:var(--r-badge);
  border:1px solid var(--c-line);background:#fff;color:var(--c-text);
  transition:border-color .16s var(--ease),color .16s var(--ease),background-color .16s var(--ease);
}
.tag:hover{border-color:rgba(27,98,214,.45);color:var(--c-primary);background:var(--c-tint);text-decoration:none}

/* 上一篇 / 下一篇 */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.post-nav a{
  display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:18px 20px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.post-nav a:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(27,98,214,.22);text-decoration:none}
.post-nav .dir{display:block;font-size:12px;color:var(--c-muted);margin-bottom:8px}
.post-nav .ttl{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:15px;font-weight:600;color:var(--c-ink);line-height:1.6;
}
.post-nav .is-next{text-align:right}
@media (max-width:767px){
  .post-nav{grid-template-columns:1fr}
  .post-nav .is-next{text-align:left}
}

/* 空态 */
.empty-article{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:64px 32px;text-align:center;
}
.empty-article i{font-size:40px;color:var(--c-primary-l);margin-bottom:18px;display:block}
.empty-article h2{font-size:22px;margin-bottom:10px}
.empty-article p{color:var(--c-text);margin:0 auto 22px;max-width:420px;font-size:15px}

/* ===================== 侧栏 ===================== */
.side-sticky{position:sticky;top:88px;display:flex;flex-direction:column;gap:18px}
.side-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:22px}
.side-card h3{
  font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:9px;
}
.side-card h3 i{color:var(--c-primary);font-size:14px}
.side-list li+li{border-top:1px solid var(--c-line)}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:13px 0;font-size:15px;font-weight:500;color:var(--c-ink);
}
.side-list a span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side-list a i{font-size:12px;color:var(--c-primary-l);transition:transform .18s var(--ease),color .18s var(--ease)}
.side-list a:hover{color:var(--c-primary);text-decoration:none}
.side-list a:hover i{transform:translateX(4px);color:var(--c-primary)}
.side-cta{background:linear-gradient(160deg,#FFFFFF 0%,var(--c-tint) 100%)}
.side-cta p{font-size:14px;color:var(--c-text);margin:0 0 16px}
@media (max-width:1023px){
  .side-sticky{position:static;top:auto;margin-top:24px}
}

/* ===================== 卡片通用 ===================== */
.mini-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(27,98,214,.22)}
.mini-thumb{position:relative;aspect-ratio:16/10;background:var(--c-tint);overflow:hidden}
.mini-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.mini-card:hover .mini-thumb img{transform:scale(1.03)}
.mini-thumb .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);box-shadow:var(--sh-1)}
.mini-body{display:flex;flex-direction:column;gap:10px;padding:18px 20px 20px;flex:1 1 auto}
.mini-body h3{font-size:17px;line-height:1.55}
.mini-body h3 a{color:var(--c-ink)}
.mini-body h3 a:hover{color:var(--c-primary);text-decoration:none}
.mini-body p{
  margin:0;font-size:14px;color:var(--c-muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--c-muted)}
.mini-foot time{font-variant-numeric:tabular-nums}
.mini-foot .more{color:var(--c-primary);font-weight:600}
.center-cta{display:flex;justify-content:center;margin-top:36px;gap:14px;flex-wrap:wrap}

/* ===================== 订阅 / 提问 ===================== */
.subscribe-section{background:var(--c-tint);border-top:1px solid var(--c-line)}
.subscribe-section h2{font-size:clamp(21px,2.6vw,28px);margin-bottom:12px}
.subscribe-section .lead{font-size:15px;color:var(--c-text);margin:0;max-width:460px}
.sub-form{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-panel);
  box-shadow:var(--sh-2);padding:22px;display:flex;flex-wrap:wrap;gap:12px;
}
.sub-form input{
  flex:1 1 220px;height:46px;margin:0;padding:0 16px;
  border:1px solid var(--c-line);border-radius:var(--r-input);
  background:#fff;color:var(--c-ink);font-size:15px;
  transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.sub-form input::placeholder{color:#A9B8CB}
.sub-form input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(27,98,214,.14)}
.sub-form .btn{flex:0 0 auto;height:46px}
.form-tip{flex:1 1 100%;margin:0;font-size:12.5px;color:var(--c-muted);line-height:1.7}
@media (max-width:639px){
  .sub-form{padding:18px}
  .sub-form input{flex:1 1 100%;height:48px}
  .sub-form .btn{width:100%}
}

/* ===================== 页脚 ===================== */
.site-footer{background:#fff;border-top:1px solid var(--c-line);padding-top:56px}
@media (min-width:1024px){.site-footer{padding-top:64px}}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--c-text);max-width:330px}
.footer-contact{font-size:13px;color:var(--c-muted);line-height:2}
.footer-contact i{color:var(--c-primary-l);margin-right:6px;width:14px}
.footer-col h4{font-size:15px;color:var(--c-ink);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--c-text)}
.footer-links a:hover{color:var(--c-primary);text-decoration:none}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  border-top:1px solid var(--c-line);padding:20px 0;font-size:13px;color:var(--c-muted);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:639px){
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{justify-content:flex-start}
}

/* ===================== 动效偏好 ===================== */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
  .mini-card:hover,.post-nav a:hover,.btn-primary:hover,.btn-outline:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --c-primary:#1B62D6;
  --c-primary-d:#12489F;
  --c-primary-l:#7CB0F2;
  --c-tint:#EEF5FF;
  --c-bg:#F8FBFF;
  --c-card:#FFFFFF;
  --c-ink:#0E2A47;
  --c-text:#4A5B72;
  --c-muted:#8496AC;
  --c-line:#E3EBF6;
  --c-accent:#F2A03D;
  --c-accent-d:#B26A12;
  --c-green:#17A88B;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-field:12px;
  --r-panel:20px;
  --sh-1:0 1px 2px rgba(14,42,71,.05), 0 2px 8px rgba(14,42,71,.04);
  --sh-2:0 8px 24px rgba(27,98,214,.08);
  --sh-3:0 16px 40px rgba(27,98,214,.14);
  --font:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", 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:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--c-ink);font-family:var(--font);line-height:1.35;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-primary-d);text-decoration:underline;text-underline-offset:3px}
button{font-family:inherit;font-size:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,3vw,32px);font-weight:700;margin-bottom:12px}
.section-head p{font-size:15px;color:var(--c-muted)}
.badge{
  display:inline-block;
  padding:4px 12px;
  border-radius:999px;
  background:var(--c-tint);
  color:var(--c-primary);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  margin-bottom:16px;
}
.badge-accent{background:rgba(242,160,61,.14);color:var(--c-accent-d)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:background-color .18s ease, color .18s ease, transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;box-shadow:var(--sh-2)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:rgba(27,98,214,.35)}
.btn-ghost:hover{background:var(--c-tint);color:var(--c-primary-d);border-color:var(--c-primary)}
.btn-link{color:var(--c-primary);font-weight:600;padding:0;height:auto;background:none;border:0}
.btn-link i{transition:transform .18s ease}
.btn-link:hover i{transform:translateX(4px)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-2);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:70px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:36px;height:36px;
  border-radius:10px;
  background:linear-gradient(145deg,var(--c-primary),#2E7BEA);
  color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;
  flex:0 0 auto;
}
.brand-text{display:block;font-size:16px;font-weight:800;color:var(--c-ink);line-height:1.2}
.brand-sub{display:block;font-size:10px;letter-spacing:.16em;color:var(--c-muted);line-height:1.4}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;
  padding:8px 14px;
  border-radius:10px;
  color:var(--c-text);
  font-size:15px;
  font-weight:600;
  transition:color .16s ease, background-color .16s ease;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-tint);text-decoration:none}
.nav-link.is-active{color:var(--c-primary)}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
}
.header-cta{height:40px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink);
  font-size:16px;
}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--c-line);
  background:#fff;
  padding:12px 24px 20px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:block;
  padding:12px 14px;
  border-radius:10px;
  color:var(--c-text);
  font-weight:600;
  font-size:15px;
}
.mobile-drawer a:hover{background:var(--c-tint);color:var(--c-primary);text-decoration:none}
.mobile-drawer a.is-active{color:var(--c-primary);background:var(--c-tint)}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:22px}
.breadcrumb li::after{content:"/";margin-left:8px;color:#C6D4E6}
.breadcrumb li:last-child{color:var(--c-ink);font-weight:600}
.breadcrumb li:last-child::after{content:"";margin:0}

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  padding:56px 0 88px;
  background:linear-gradient(160deg,#F8FBFF 0%,#EEF5FF 100%);
}
.hero::after{
  content:"";
  position:absolute;
  right:-120px;bottom:-140px;
  width:460px;height:460px;
  border-radius:50%;
  background:radial-gradient(circle at center, rgba(27,98,214,.10), rgba(27,98,214,0) 68%);
  pointer-events:none;
}
.hero-copy{position:relative;z-index:1}
.hero h1{font-size:clamp(28px,4.2vw,44px);font-weight:800;line-height:1.25;margin-bottom:16px}
.hero-sub{font-size:17px;font-weight:600;color:var(--c-primary);margin-bottom:12px}
.hero-desc{font-size:16px;color:var(--c-text);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:28px}
.stat{padding-right:28px;border-right:1px solid var(--c-line)}
.stat:last-child{border-right:0;padding-right:0}
.stat strong{display:block;font-size:28px;font-weight:800;color:var(--c-ink);font-variant-numeric:tabular-nums;line-height:1.2}
.stat span{font-size:14px;color:var(--c-muted)}
.hero-media{position:relative;z-index:1;background:var(--c-tint);border-radius:var(--r-img);overflow:hidden}
.hero-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--r-img);
  box-shadow:var(--sh-2);
}
.hero-media::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:96px;height:8px;
  border-radius:0 8px 0 0;
  background:linear-gradient(90deg,var(--c-primary),rgba(27,98,214,0));
}

/* ============ 锚点条 ============ */
.anchor-bar{
  background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-1);
}
.anchor-inner{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding-top:14px;
  padding-bottom:14px;
  scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-link{
  flex:0 0 auto;
  padding:9px 18px;
  border-radius:999px;
  border:1px solid var(--c-line);
  color:var(--c-text);
  font-size:14px;
  font-weight:600;
  transition:all .18s ease;
}
.anchor-link:hover{color:var(--c-primary);border-color:var(--c-primary-l);text-decoration:none}
.anchor-link.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.anchor-link.is-active:hover{color:#fff}

/* ============ 图文分栏 ============ */
.split-copy h2{font-size:clamp(22px,3vw,32px);font-weight:700;margin-bottom:16px}
.split-copy > p{font-size:16px;margin-bottom:20px}
.split-media{background:var(--c-tint);border-radius:var(--r-img);overflow:hidden}
.split-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-img);
  box-shadow:var(--sh-1);
  transition:transform .3s ease, box-shadow .3s ease;
}
.split-media:hover img{transform:translateY(-4px);box-shadow:var(--sh-3)}
.feature-list{margin:0 0 28px}
.feature-list li{
  display:flex;
  gap:14px;
  padding:18px 0;
  border-bottom:1px solid var(--c-line);
}
.feature-list li:first-child{padding-top:0}
.feature-list li:last-child{border-bottom:0}
.feature-list h3{font-size:17px;font-weight:600;margin-bottom:4px}
.feature-list p{font-size:14px;color:var(--c-muted);line-height:1.8}
.dot{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  background:rgba(242,160,61,.16);
  color:var(--c-accent-d);
  font-size:12px;
  font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  margin-top:4px;
  font-variant-numeric:tabular-nums;
}

/* ============ 数据条 ============ */
.metrics-section{padding:0 0 96px}
.metrics{
  background:var(--c-ink);
  border-radius:var(--r-panel);
  padding:40px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
  box-shadow:var(--sh-2);
}
.metric strong{
  display:block;
  font-size:38px;
  font-weight:800;
  color:var(--c-accent);
  font-variant-numeric:tabular-nums;
  line-height:1.15;
}
.metric span{display:block;font-size:15px;font-weight:600;color:#fff;margin-bottom:6px}
.metric p{font-size:13px;color:rgba(255,255,255,.62);line-height:1.75}

/* ============ FAQ ============ */
.faq-accordion{border:0;background:transparent}
.faq-accordion .accordion-item{
  border:1px solid var(--c-line);
  border-radius:12px;
  background:#fff;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow .2s ease, border-color .2s ease;
}
.faq-accordion .accordion-item:hover{border-color:rgba(27,98,214,.22)}
.faq-accordion .accordion-item.is-active{box-shadow:var(--sh-2)}
.faq-accordion .accordion-title{
  border:0;
  padding:18px 24px;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  background:#fff;
  transition:color .18s ease;
}
.faq-accordion .accordion-title:hover{color:var(--c-primary)}
.faq-accordion .accordion-title::before{
  content:"+";
  float:right;
  margin:0;
  color:var(--c-primary);
  font-size:20px;
  font-weight:600;
  line-height:1.2;
}
.faq-accordion .accordion-title[aria-expanded="true"]::before{content:"−"}
.faq-accordion .accordion-content{
  padding:0 24px 20px;
  border:0;
  background:#fff;
  color:var(--c-text);
  font-size:15px;
  line-height:1.85;
}
.faq-accordion .accordion-item.is-active .accordion-content{box-shadow:inset 3px 0 0 var(--c-primary)}

/* ============ CTA 表单 ============ */
.cta-section{
  background:var(--c-tint);
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
}
.cta-copy h2{font-size:clamp(22px,3vw,32px);font-weight:700;margin-bottom:12px}
.cta-copy p{font-size:15px;color:var(--c-text);margin-bottom:16px}
.cta-points li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--c-text);padding:6px 0;
}
.cta-points i{color:var(--c-primary);margin-top:6px;font-size:12px}
.form-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-panel);
  padding:24px;
  box-shadow:var(--sh-2);
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--c-ink);margin-bottom:6px}
.field input,
.field textarea{
  width:100%;
  border:1px solid var(--c-line);
  border-radius:var(--r-field);
  background:#fff;
  padding:12px 14px;
  font-size:15px;
  font-family:inherit;
  color:var(--c-ink);
  transition:border-color .18s ease, box-shadow .18s ease;
}
.field textarea{min-height:96px;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(27,98,214,.12);
}
.form-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.form-note{font-size:12px;color:var(--c-muted);margin-top:12px}
.form-tip{
  display:none;
  margin-top:14px;
  padding:10px 14px;
  border-radius:10px;
  background:var(--c-tint);
  color:var(--c-primary);
  font-size:13px;
}
.form-tip.is-show{display:block}

/* ============ 页脚 ============ */
.site-footer{
  background:#fff;
  border-top:1px solid var(--c-line);
  padding-top:64px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand p{font-size:14px;color:var(--c-text);margin:16px 0 16px;max-width:340px;line-height:1.85}
.footer-contact{font-size:13px;color:var(--c-muted);line-height:2}
.footer-contact i{color:var(--c-primary);margin-right:6px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--c-ink)}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--c-text)}
.footer-links a:hover{color:var(--c-primary)}
.footer-bottom{
  border-top:1px solid var(--c-line);
  padding:20px 0 24px;
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--c-muted);
}

/* ============ 移动端底部 Tab ============ */
.tab-bar{display:none}
@media (max-width:639px){
  .tab-bar{
    display:flex;
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:70;
    height:60px;
    padding-bottom:env(safe-area-inset-bottom);
    background:#fff;
    border-top:1px solid var(--c-line);
    box-shadow:0 -6px 18px rgba(14,42,71,.07);
  }
  .tab-item{
    flex:1 1 0;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:4px;
    position:relative;
    color:var(--c-muted);
    font-size:11px;
    font-weight:600;
    text-decoration:none;
  }
  .tab-item i{font-size:19px}
  .tab-item.is-active{color:var(--c-primary)}
  .tab-item.is-active::before{
    content:"";
    position:absolute;
    top:0;
    width:24px;height:3px;
    border-radius:0 0 3px 3px;
    background:var(--c-primary);
  }
  .tab-item:hover{text-decoration:none;color:var(--c-primary)}
  body{padding-bottom:76px}
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .section{padding:72px 0}
  .metrics-section{padding-bottom:72px}
  .main-nav{display:none}
  .header-cta{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .hero{padding:40px 0 64px}
  .hero-media{margin-top:32px;order:2}
  .hero-copy{order:1}
  .split-media{order:2;margin-bottom:24px}
  .split-copy{order:1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .metrics{grid-template-columns:1fr;padding:28px;gap:22px}
  .metric strong{font-size:32px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:639px){
  .section{padding:56px 0}
  .metrics-section{padding-bottom:56px}
  .hero{padding:32px 0 56px}
  .hero h1{font-size:26px}
  .hero-stats{gap:20px}
  .stat{padding-right:20px}
  .stat strong{font-size:22px}
  .hero-actions .btn{width:100%}
  .form-row .btn{width:100%}
  .breadcrumb li:nth-child(n+3){display:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --c-primary:#1B62D6;
  --c-primary-d:#12489F;
  --c-primary-l:#7CB0F2;
  --c-tint:#EEF5FF;
  --c-bg:#F8FBFF;
  --c-card:#FFFFFF;
  --c-ink:#0E2A47;
  --c-text:#4A5B72;
  --c-muted:#8496AC;
  --c-line:#E3EBF6;
  --c-accent:#F2A03D;
  --c-accent-ink:#B26A12;
  --c-green:#17A88B;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-input:12px;
  --r-pill:999px;
  --r-panel:20px;
  --sh-1:0 1px 2px rgba(14,42,71,.05),0 2px 8px rgba(14,42,71,.04);
  --sh-2:0 8px 24px rgba(27,98,214,.08);
  --sh-3:0 16px 40px rgba(27,98,214,.14);
  --sec:96px;
}
*{box-sizing:border-box}
*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .16s ease}
a:hover{text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{margin:0;color:var(--c-ink);line-height:1.35;font-weight:700}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-2);
}
.header-inner{display:flex;align-items:center;gap:18px;height:70px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:linear-gradient(135deg,#1B62D6,#4A8DF0);
  color:#fff;display:grid;place-items:center;font-size:17px;
  box-shadow:0 6px 16px rgba(27,98,214,.24);
}
.brand-text{display:block;font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:.2px;line-height:1.2}
.brand-sub{display:block;font-size:11px;color:var(--c-muted);letter-spacing:1.8px;line-height:1.4}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:#3C5470;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-tint);text-decoration:none}
.nav-link.is-active{color:var(--c-primary)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;
  height:2px;border-radius:2px;background:var(--c-primary);
}
.nav-cta{margin-left:14px}
.nav-toggle{
  display:none;margin-left:auto;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);
  font-size:17px;
}
.nav-drawer{display:none}
@media (max-width:1023px){
  .main-nav,.nav-cta{display:none}
  .nav-toggle{display:grid;place-items:center}
  .nav-drawer{
    display:none;border-top:1px solid var(--c-line);background:#fff;
    padding:12px 0 18px;box-shadow:var(--sh-2);
  }
  .nav-drawer.is-open{display:block}
  .nav-drawer a{
    display:flex;align-items:center;gap:10px;
    padding:13px 24px;font-size:15px;font-weight:600;color:#3C5470;
  }
  .nav-drawer a.is-active{color:var(--c-primary);background:var(--c-tint)}
  .nav-drawer a:hover{text-decoration:none;background:var(--c-tint)}
}

/* ============ 移动底部 Tab ============ */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:#fff;border-top:1px solid var(--c-line);
  box-shadow:0 -6px 20px rgba(14,42,71,.07);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar .tab-item{
  flex:1;height:60px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:3px;
  font-size:12px;color:var(--c-muted);position:relative;
}
.mobile-tabbar .tab-item i{font-size:19px}
.mobile-tabbar .tab-item:hover{text-decoration:none;color:var(--c-primary)}
.mobile-tabbar .tab-item.is-active{color:var(--c-primary)}
.mobile-tabbar .tab-item.is-active::before{
  content:"";position:absolute;top:0;width:26px;height:3px;
  border-radius:0 0 3px 3px;background:var(--c-primary);
}
@media (max-width:1023px){
  .mobile-tabbar{display:flex}
  body{padding-bottom:72px}
}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;text-decoration:none;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px rgba(27,98,214,.22)}
.btn-primary:hover{background:var(--c-primary-d);color:#fff}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:rgba(27,98,214,.36)}
.btn-ghost:hover{background:var(--c-tint);color:var(--c-primary-d);border-color:var(--c-primary)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#DE8B25;color:#fff}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--c-primary);font-size:15px;font-weight:600;
}
.btn-text i{transition:transform .18s ease}
.btn-text:hover{text-decoration:none;color:var(--c-primary-d)}
.btn-text:hover i{transform:translateX(4px)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1.7;
  background:var(--c-tint);color:var(--c-primary);
}
.badge-accent{background:rgba(242,160,61,.14);color:var(--c-accent-ink)}
.badge-green{background:rgba(23,168,139,.12);color:#0F7D68}

.section{padding:var(--sec) 0}
.section-tint{background:var(--c-tint)}
.section-white{background:#fff}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{
  font-size:clamp(22px,3vw,32px);font-weight:700;
  padding-left:16px;position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:4px;background:var(--c-primary);
}
.section-sub{margin-top:12px;font-size:15px;color:var(--c-muted);max-width:620px}

/* ============ 首屏 ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:76px 0 84px;
  background:linear-gradient(135deg,#F8FBFF 0%,#EEF5FF 100%);
  border-bottom:1px solid var(--c-line);
}
.page-hero::after{
  content:"";position:absolute;right:-8%;bottom:-42%;
  width:540px;height:540px;border-radius:50%;
  background:radial-gradient(circle at 32% 32%,rgba(27,98,214,.10),rgba(27,98,214,0) 62%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);
  font-size:13px;font-weight:600;color:var(--c-primary);
  box-shadow:var(--sh-1);margin-bottom:20px;
}
.hero-title{
  font-size:clamp(28px,4.2vw,44px);
  font-weight:800;line-height:1.25;letter-spacing:-.4px;
  margin-bottom:16px;
}
.hero-sub{font-size:clamp(15px,1.6vw,18px);color:var(--c-text);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--c-line);padding-top:22px}
.hero-stats li{padding:0 26px;border-left:1px solid var(--c-line)}
.hero-stats li:first-child{padding-left:0;border-left:0}
.hero-stats .stat-num{display:block;font-size:26px;font-weight:800;color:var(--c-ink);line-height:1.2}
.hero-stats .stat-label{display:block;font-size:13px;color:var(--c-muted);margin-top:4px}
.hero-media{position:relative}
.hero-media img{
  width:100%;border-radius:var(--r-img);box-shadow:var(--sh-2);
  aspect-ratio:16/11;object-fit:cover;background:var(--c-tint);
}
.hero-media::after{
  content:"";position:absolute;left:6%;right:26%;bottom:-8px;height:8px;border-radius:8px;
  background:linear-gradient(90deg,var(--c-primary),rgba(27,98,214,0));
}
@media (max-width:1023px){
  .page-hero{padding:52px 0 60px}
  .hero-media{margin-top:34px}
}

/* ============ 筛选标签条 ============ */
.filter-bar{
  display:flex;gap:10px;overflow-x:auto;padding:6px 0 14px;
  -webkit-overflow-scrolling:touch;scrollbar-width:none;
}
.filter-bar::-webkit-scrollbar{display:none}
.filter-tab{
  flex:0 0 auto;padding:9px 18px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:#fff;
  font-size:14px;font-weight:600;color:#41607F;white-space:nowrap;
  transition:all .18s ease;
}
.filter-tab:hover{border-color:var(--c-primary);color:var(--c-primary);text-decoration:none}
.filter-tab.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ============ 场景卡片 ============ */
.scene-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
  padding:20px;overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(27,98,214,.22)}
.scene-card .thumb{
  width:100%;border-radius:10px;aspect-ratio:16/10;object-fit:cover;
  background:var(--c-tint);margin-bottom:16px;
}
.scene-card h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px}
.scene-card p{font-size:14px;color:var(--c-muted);line-height:1.75;margin-bottom:16px}
.scene-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-muted);
}
.scene-card--wide .wide-inner{align-items:center}
.scene-card--wide .thumb{margin-bottom:0;aspect-ratio:16/11}
.scene-card--wide h3{font-size:21px}
.scene-card--wide p{font-size:15px}
.stack-col{display:flex;flex-direction:column;gap:24px;height:100%}
.stack-col .scene-card{flex:1}
.is-hidden-card{display:none !important}
@media (max-width:1023px){
  .scene-card--wide .thumb{margin-bottom:16px}
}
@media (max-width:639px){
  .scene-card{padding:16px}
  .scene-card--wide h3{font-size:19px}
}

/* ============ 数据条 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-panel);
  padding:32px 28px;box-shadow:var(--sh-1);
}
.stat-strip .item{padding-left:22px;border-left:3px solid var(--c-tint)}
.stat-strip .item:first-child{padding-left:0;border-left:0}
.stat-strip .num{display:block;font-size:28px;font-weight:800;color:var(--c-ink);line-height:1.2}
.stat-strip .num em{font-style:normal;font-size:15px;font-weight:600;color:var(--c-primary);margin-left:4px}
.stat-strip .cap{display:block;font-size:14px;color:var(--c-muted);margin-top:6px}
@media (max-width:767px){
  .stat-strip{grid-template-columns:1fr;gap:0;padding:22px}
  .stat-strip .item{padding:14px 0;border-left:0;border-top:1px solid var(--c-line)}
  .stat-strip .item:first-child{border-top:0;padding-top:0}
}

/* ============ 引用评价 ============ */
.quote-card{
  position:relative;height:100%;
  background:var(--c-tint);border-radius:var(--r-card);
  padding:28px 24px 24px;border:1px solid var(--c-line);
}
.quote-card::before{
  content:"\201C";position:absolute;top:6px;left:20px;
  font-size:54px;line-height:1;color:rgba(27,98,214,.22);font-family:Georgia,serif;
}
.quote-card blockquote{margin:14px 0 20px;font-size:15px;line-height:1.85;color:var(--c-ink)}
.quote-person{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--c-muted)}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 40px;
  background:#fff;border:1px solid var(--c-line);
  display:grid;place-items:center;font-weight:700;color:var(--c-primary);
}
.quote-person strong{display:block;color:var(--c-ink);font-size:14px}
.quote-person span{font-size:13px}

/* ============ 领域墙 ============ */
.domain-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.domain-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px 20px;text-align:center;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.domain-item:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(27,98,214,.22)}
.domain-item i{font-size:20px;color:var(--c-primary-l);margin-bottom:10px;display:block}
.domain-item strong{display:block;font-size:16px;color:var(--c-ink);margin-bottom:4px}
.domain-item span{display:block;font-size:13px;color:var(--c-muted)}
@media (max-width:767px){.domain-wall{grid-template-columns:1fr 1fr}}
@media (max-width:519px){.domain-wall{grid-template-columns:1fr}}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:12px;
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(27,98,214,.22)}
.faq-item.is-open{border-color:rgba(27,98,214,.3);box-shadow:var(--sh-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
}
.faq-q .faq-icon{
  flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;
  background:var(--c-tint);color:var(--c-primary);
  transition:transform .22s ease,background-color .22s ease;
}
.faq-item.is-open .faq-icon{background:var(--c-primary);color:#fff;transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .24s ease;
  padding:0 22px;font-size:15px;line-height:1.9;color:var(--c-text);
  position:relative;
}
.faq-item.is-open .faq-a{padding-bottom:20px}
.faq-a::before{
  content:"";position:absolute;left:22px;top:0;bottom:20px;width:3px;
  border-radius:3px;background:var(--c-primary-l);opacity:0;transition:opacity .2s ease;
}
.faq-item.is-open .faq-a::before{opacity:1}
.faq-a p{padding-left:14px;margin:0}

/* ============ 订阅 CTA ============ */
.cta-panel{
  background:linear-gradient(135deg,#EEF5FF 0%,#F8FBFF 100%);
  border:1px solid var(--c-line);border-radius:var(--r-panel);
  padding:44px 40px;box-shadow:var(--sh-1);
}
.cta-panel h2{font-size:clamp(21px,2.6vw,28px);margin-bottom:12px}
.cta-panel .lead{font-size:15px;color:var(--c-text);max-width:520px}
.form-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-2);
}
.form-row{display:flex;gap:12px}
.form-row input{
  flex:1;height:46px;padding:0 16px;border-radius:var(--r-input);
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-row input::placeholder{color:#A9B8CA}
.form-row input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(27,98,214,.14)}
.form-note{margin-top:12px;font-size:12px;color:var(--c-muted);line-height:1.7}
.qr-box{
  width:132px;height:132px;border-radius:12px;background:#fff;
  border:1px solid var(--c-line);display:grid;place-items:center;
  color:var(--c-muted);font-size:12px;text-align:center;padding:10px;
}
@media (max-width:639px){
  .cta-panel{padding:28px 20px}
  .form-row{flex-direction:column}
  .form-row .btn{width:100%}
}

/* ============ 页脚 ============ */
.site-footer{
  background:#fff;border-top:1px solid var(--c-line);
  padding:64px 0 26px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{font-size:14px;color:var(--c-muted);line-height:1.8;margin:16px 0}
.footer-contact{font-size:13px;color:var(--c-muted);line-height:2}
.footer-contact i{color:var(--c-primary-l);margin-right:6px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--c-ink)}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--c-text)}
.footer-links a:hover{color:var(--c-primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:44px;padding-top:20px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-muted);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:639px){
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:44px 0 22px}
}

@media (max-width:1023px){:root{--sec:72px}}
@media (max-width:639px){:root{--sec:56px}}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .scene-card:hover,.domain-item:hover,.btn:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --c-primary:#1B62D6;
  --c-primary-d:#12489F;
  --c-primary-l:#7CB0F2;
  --c-tint:#EEF5FF;
  --c-bg:#F8FBFF;
  --c-card:#FFFFFF;
  --c-ink:#0E2A47;
  --c-text:#4A5B72;
  --c-muted:#8496AC;
  --c-line:#E3EBF6;
  --c-accent:#F2A03D;
  --c-accent-ink:#B26A12;
  --c-green:#17A88B;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-badge:999px;
  --r-panel:20px;
  --sh1:0 1px 2px rgba(14,42,71,.05),0 2px 8px rgba(14,42,71,.04);
  --sh2:0 8px 24px rgba(27,98,214,.08);
  --sh3:0 16px 40px rgba(27,98,214,.14);
  --sp-section:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary-d);text-decoration:underline;text-underline-offset:3px;}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;line-height:1.35;}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:800;}
h2{font-size:clamp(22px,3vw,32px);}
h3{font-size:19px;font-weight:600;line-height:1.5;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;}
input,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sp-section) 0;}
.section-tint{background:var(--c-tint);}
.section-white{background:#fff;}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-tint);border-radius:var(--r-badge);
  padding:4px 12px;margin-bottom:14px;
}
.section-head h2{position:relative;padding-left:16px;margin-bottom:12px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  background:var(--c-primary);border-radius:2px;
}
.section-head p{color:var(--c-muted);font-size:15px;max-width:660px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh2);}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;box-shadow:var(--sh3);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:rgba(27,98,214,.35);}
.btn-ghost:hover{background:var(--c-tint);color:var(--c-primary-d);border-color:var(--c-primary);}
.btn-text{height:auto;padding:0;background:none;color:var(--c-primary);border:0;}
.btn-text i{transition:transform .18s ease;}
.btn-text:hover{background:none;text-decoration:none;color:var(--c-primary-d);}
.btn-text:hover i{transform:translateX(4px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1;
  padding:6px 12px;border-radius:var(--r-badge);
  background:var(--c-tint);color:var(--c-primary);
}
.badge-accent{background:rgba(242,160,61,.14);color:var(--c-accent-ink);}
.badge-green{background:rgba(23,168,139,.12);color:#0F7A64;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh2);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-primary),#3B84EE);
  color:#fff;font-size:17px;box-shadow:var(--sh2);
}
.brand-text{display:block;font-size:17px;font-weight:800;color:var(--c-ink);line-height:1.25;letter-spacing:.2px;}
.brand-sub{display:block;font-size:11px;font-weight:600;color:var(--c-muted);letter-spacing:1.4px;line-height:1.3;}
.main-nav{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;font-size:15px;font-weight:600;color:#3D5570;
  padding:6px 2px;transition:color .16s ease;text-decoration:none;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--c-primary);border-radius:2px;transform:scaleX(0);
  transition:transform .16s ease;
}
.nav-link:hover{color:var(--c-primary);text-decoration:none;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);font-size:17px;
}
.nav-toggle:hover{background:var(--c-tint);}
.mobile-drawer{display:none;border-top:1px solid var(--c-line);background:#fff;}
.mobile-drawer.is-open{display:block;}
.mobile-drawer ul{padding:10px 24px 18px;}
.mobile-drawer li + li{border-top:1px solid var(--c-line);}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 2px;font-size:15px;font-weight:600;color:var(--c-ink);
}
.mobile-drawer a.is-active{color:var(--c-primary);}
.mobile-drawer a i{color:var(--c-muted);font-size:13px;}

/* ---------- 移动端底部 Tab ---------- */
.tab-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--c-line);
  box-shadow:0 -6px 20px rgba(14,42,71,.08);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-bar ul{display:flex;}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:2px;height:60px;font-size:12px;font-weight:600;color:var(--c-muted);
  position:relative;text-decoration:none;
}
.tab-item i{font-size:19px;}
.tab-item::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);
  width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--c-primary);
  transition:transform .16s ease;
}
.tab-item.is-active{color:var(--c-primary);}
.tab-item.is-active::before{transform:translateX(-50%) scaleX(1);}
.tab-item:hover{text-decoration:none;color:var(--c-primary);}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:20px;}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li + li::before{content:"/";color:#C3D2E4;}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:none;}
.breadcrumb .current{color:var(--c-ink);font-weight:600;}

/* ---------- 页头 ---------- */
.page-hero{
  background:
    radial-gradient(900px 420px at 88% -10%,rgba(124,176,242,.28),transparent 62%),
    linear-gradient(160deg,#F8FBFF 0%,#EEF5FF 100%);
  padding:56px 0 64px;
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.page-hero .grid-x{align-items:center;}
.hero-copy h1{margin-bottom:16px;}
.hero-copy .lede{font-size:17px;color:#3D5570;max-width:560px;margin-bottom:26px;}
.hero-chip{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-primary);background:#fff;border:1px solid rgba(27,98,214,.2);
  border-radius:var(--r-badge);padding:6px 14px;margin-bottom:18px;box-shadow:var(--sh1);
}
.faq-search{
  display:flex;align-items:center;gap:10px;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-btn);
  box-shadow:var(--sh2);padding:6px 6px 6px 16px;max-width:520px;
}
.faq-search i{color:var(--c-primary-l);font-size:15px;}
.faq-search input{
  flex:1;border:0;background:transparent;height:42px;font-size:15px;outline:none;color:var(--c-ink);
}
.faq-search input::placeholder{color:#9FAFC4;}
.faq-search .btn{flex:0 0 auto;}
.hero-figure{margin-top:34px;}
.hero-figure img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--sh3);background:var(--c-tint);
}
.hero-figure .anchor-line{
  height:8px;width:130px;margin:0 0 0 6px;border-radius:0 0 8px 8px;
  background:linear-gradient(90deg,var(--c-primary),rgba(27,98,214,0));
}
.hero-figure figcaption{font-size:13px;color:var(--c-muted);margin-top:10px;}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  background:#fff;border-bottom:1px solid var(--c-line);
  position:sticky;top:72px;z-index:40;
}
.anchor-scroll{
  display:flex;gap:10px;overflow-x:auto;padding:14px 0;
  scrollbar-width:none;
}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-tag{
  flex:0 0 auto;font-size:14px;font-weight:600;color:#3D5570;
  border:1px solid var(--c-line);border-radius:var(--r-badge);
  padding:8px 16px;background:#fff;transition:all .18s ease;text-decoration:none;
}
.anchor-tag:hover{border-color:var(--c-primary);color:var(--c-primary);text-decoration:none;}
.anchor-tag.is-on{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}

/* ---------- 三步自查 ---------- */
.steps-list{display:flex;flex-direction:column;gap:0;}
.step-item{
  display:flex;gap:18px;padding:22px 0;border-bottom:1px dashed var(--c-line);
  transition:background-color .18s ease;
}
.step-item:last-child{border-bottom:0;}
.step-num{
  flex:0 0 36px;width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(242,160,61,.16);color:var(--c-accent-ink);
  font-size:15px;font-weight:800;
}
.step-item h3{margin-bottom:6px;font-size:17px;}
.step-item p{font-size:15px;color:var(--c-text);margin:0;}
.figure-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh1);padding:14px;transition:transform .2s ease,box-shadow .2s ease;
}
.figure-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
.figure-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:10px;background:var(--c-tint);}
.figure-card figcaption{font-size:13px;color:var(--c-muted);margin-top:12px;padding:0 4px 4px;}

/* ---------- 深色数据带 ---------- */
.insight-band{
  background:linear-gradient(135deg,#0E2A47 0%,#123A63 100%);
  border-radius:var(--r-panel);padding:44px 40px;color:#D6E4F5;
  position:relative;overflow:hidden;
}
.insight-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;
  border-radius:50%;background:radial-gradient(circle,rgba(124,176,242,.28),transparent 68%);
}
.insight-band h2{color:#fff;font-size:clamp(20px,2.4vw,26px);margin-bottom:10px;}
.insight-band .insight-lede{color:#9FBADB;font-size:15px;max-width:620px;margin-bottom:30px;}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;position:relative;z-index:2;}
.stat-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);padding:22px;
  transition:background-color .2s ease,transform .2s ease;
}
.stat-card:hover{background:rgba(255,255,255,.1);transform:translateY(-4px);}
.stat-num{
  font-size:28px;font-weight:800;color:#fff;line-height:1.2;
  display:flex;align-items:baseline;gap:6px;
}
.stat-num span{font-size:15px;font-weight:600;color:var(--c-accent);}
.stat-label{font-size:14px;color:#9FBADB;margin-top:6px;}

/* ---------- FAQ ---------- */
.faq-group{margin-bottom:44px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group > header{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.faq-group > header h2{font-size:22px;padding-left:0;}
.faq-group > header h2::before{display:none;}
.faq-group .group-icon{
  width:40px;height:40px;border-radius:12px;flex:0 0 40px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-tint);color:var(--c-primary);font-size:16px;
}
.accordion.faq-accordion{background:transparent;border:0;margin:0;}
.faq-accordion .accordion-item{
  background:#fff;border:1px solid var(--c-line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh1);
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-accordion .accordion-item:hover{border-color:rgba(27,98,214,.22);box-shadow:var(--sh2);}
.faq-accordion .accordion-item.is-active{border-color:rgba(27,98,214,.3);}
.faq-accordion .accordion-title{
  font-size:16px;font-weight:600;color:var(--c-ink);background:#fff;
  border:0;padding:18px 56px 18px 24px;position:relative;
  transition:background-color .2s ease,color .2s ease;
}
.faq-accordion .accordion-title:hover{background:var(--c-tint);color:var(--c-primary);}
.faq-accordion .accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:50%;background:var(--c-tint);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;line-height:1;
}
.faq-accordion .accordion-item.is-active .accordion-title::before{content:"−";}
.faq-accordion .accordion-content{
  border:0;background:#fff;color:var(--c-text);font-size:15px;line-height:1.9;
  padding:0 24px 20px;box-shadow:inset 3px 0 0 var(--c-primary);
}
.faq-accordion .accordion-content p{margin:0 0 .8em;}
.faq-accordion .accordion-content p:last-child{margin-bottom:0;}
.faq-accordion .accordion-content ul{margin:.4em 0 .8em;padding-left:0;}
.faq-accordion .accordion-content li{
  position:relative;padding-left:18px;margin-bottom:6px;font-size:15px;
}
.faq-accordion .accordion-content li::before{
  content:"";position:absolute;left:2px;top:.72em;
  width:6px;height:6px;border-radius:50%;background:var(--c-primary-l);
}

/* ---------- 联系卡 ---------- */
.contact-panel{
  background:var(--c-tint);border:1px solid var(--c-line);border-radius:var(--r-panel);
  padding:34px;box-shadow:var(--sh1);
}
.contact-panel h2{font-size:22px;margin-bottom:10px;padding-left:0;}
.contact-panel h2::before{display:none;}
.contact-rows{margin:22px 0 26px;}
.contact-row{
  display:flex;align-items:flex-start;gap:12px;padding:14px 0;
  border-bottom:1px solid rgba(27,98,214,.12);font-size:15px;
}
.contact-row:last-child{border-bottom:0;}
.contact-row i{color:var(--c-primary);font-size:15px;margin-top:4px;width:18px;text-align:center;}
.contact-row strong{display:block;color:var(--c-ink);font-weight:600;font-size:15px;}
.contact-row span{color:var(--c-muted);font-size:13.5px;}
.contact-side{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh1);height:100%;
}
.contact-side h3{margin-bottom:12px;}
.contact-side ol{counter-reset:cs;}
.contact-side li{
  position:relative;padding-left:30px;margin-bottom:14px;font-size:15px;color:var(--c-text);
}
.contact-side li::before{
  counter-increment:cs;content:counter(cs);
  position:absolute;left:0;top:2px;width:20px;height:20px;border-radius:50%;
  background:var(--c-tint);color:var(--c-primary);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.contact-side li:last-child{margin-bottom:0;}

/* ---------- 相关入口 ---------- */
.link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.link-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh1);display:flex;flex-direction:column;gap:12px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;text-decoration:none;
}
.link-card:hover{
  transform:translateY(-4px);box-shadow:var(--sh3);border-color:rgba(27,98,214,.22);
  text-decoration:none;
}
.link-card .link-icon{
  width:44px;height:44px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-tint);color:var(--c-primary);font-size:18px;
}
.link-card h3{font-size:18px;color:var(--c-ink);}
.link-card p{font-size:14.5px;color:var(--c-muted);margin:0;}
.link-card .link-more{font-size:14px;font-weight:600;color:var(--c-primary);margin-top:auto;display:inline-flex;align-items:center;gap:8px;}
.link-card .link-more i{transition:transform .18s ease;}
.link-card:hover .link-more i{transform:translateX(4px);}

/* ---------- 留言表单 ---------- */
.cta-band{
  background:linear-gradient(160deg,#F8FBFF 0%,#EEF5FF 100%);
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.form-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-panel);
  box-shadow:var(--sh2);padding:26px;
}
.form-card label{display:block;font-size:13.5px;font-weight:600;color:var(--c-ink);margin-bottom:6px;}
.form-card .field{margin-bottom:16px;}
.form-card input[type="text"],
.form-card input[type="email"],
.form-card textarea{
  width:100%;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;padding:12px 14px;font-size:15px;color:var(--c-ink);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-card input:focus,.form-card textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(27,98,214,.14);
}
.form-card textarea{min-height:112px;resize:vertical;line-height:1.8;}
.form-note{font-size:12.5px;color:var(--c-muted);margin-top:12px;line-height:1.7;}
.cta-copy h2{margin-bottom:14px;padding-left:0;}
.cta-copy h2::before{display:none;}
.cta-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;margin-bottom:12px;color:#3D5570;
}
.cta-list i{color:var(--c-green);margin-top:5px;font-size:14px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#fff;border-top:1px solid var(--c-line);
  padding:64px 0 26px;margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;color:var(--c-muted);max-width:330px;}
.footer-contact{font-size:13.5px;color:var(--c-muted);line-height:2;margin-top:14px;}
.footer-contact i{color:var(--c-primary-l);width:18px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--c-ink);}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:#5A6E86;}
.footer-links a:hover{color:var(--c-primary);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--c-muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  :root{--sp-section:72px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .header-actions .btn-sm{display:none;}
  .anchor-bar{top:72px;}
  .contact-side{margin-top:24px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .page-hero{padding:36px 0 48px;}
  .hero-copy .lede{font-size:16px;}
  .faq-search{flex-wrap:wrap;padding:12px;border-radius:var(--r-card);}
  .faq-search input{width:100%;flex:1 0 100%;height:38px;padding:0 4px;}
  .faq-search .btn{width:100%;}
  .insight-band{padding:30px 22px;}
  .stat-grid{grid-template-columns:1fr;}
  .link-cards{grid-template-columns:1fr;}
  .contact-panel{padding:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .faq-accordion .accordion-title{padding:16px 50px 16px 18px;font-size:15.5px;}
  .faq-accordion .accordion-content{padding:0 18px 18px;}
}
@media (max-width:639px){
  :root{--sp-section:56px;}
  body{padding-bottom:76px;}
  .tab-bar{display:block;}
  .header-inner{min-height:64px;}
  .brand-mark{width:34px;height:34px;flex-basis:34px;font-size:15px;}
  .brand-text{font-size:15.5px;}
  .brand-sub{display:none;}
  .anchor-bar{top:64px;}
  .btn{height:48px;}
  .btn-sm{height:40px;}
  .page-hero .figure-card img{aspect-ratio:16/10;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .btn:hover,.link-card:hover,.figure-card:hover,.stat-card:hover{transform:none;}
}