/* roulang page: index */
:root{
  --brand:#1B4DE4;
  --brand-dark:#1438BE;
  --brand-050:#EEF3FF;
  --accent:#FF6A1F;
  --teal:#0FB5A6;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --ink:#0E1626;
  --ink-2:#5B6579;
  --line:#E4E9F2;
  --shadow-1:0 1px 3px rgba(14,22,38,.06);
  --shadow-2:0 6px 18px rgba(20,40,90,.08);
  --shadow-3:0 18px 40px rgba(20,40,90,.12);
  --footer:#0B1633;
  --danger:#E23D3D;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:92px;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
::selection{background:rgba(27,77,228,.15);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container-x{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:768px){.container-x{padding-left:32px;padding-right:32px;}}

.section{padding:56px 0;}
@media (min-width:768px){.section{padding:88px 0;}}

/* ---------- 导航 ---------- */
.site-nav{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  width:min(1240px,calc(100% - 32px));
  z-index:60;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.92);
  border-radius:999px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .22s ease-out,border-color .22s ease-out,background-color .22s ease-out;
}
.site-nav.is-scrolled{box-shadow:var(--shadow-2);border-color:var(--brand-050);background:rgba(255,255,255,.94);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;height:64px;padding:0 10px 0 14px;}
.nav-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:15px;font-weight:700;letter-spacing:-.01em;color:var(--ink);}
.logo-sub{font-size:11px;letter-spacing:.14em;color:var(--ink-2);}
.nav-menu{display:flex;align-items:center;gap:2px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:36px;padding:0 14px;
  border-radius:999px;font-size:15px;font-weight:500;color:var(--ink);
  transition:color .18s ease-out,background-color .18s ease-out;
}
.nav-link:hover{color:var(--brand);background:var(--brand-050);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:-1px;width:4px;height:4px;border-radius:50%;
  background:var(--brand);transform:translateX(-50%);
}
.nav-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer;
  transition:box-shadow .18s ease-out,border-color .18s ease-out;
}
.nav-toggle:hover{border-color:var(--brand);box-shadow:var(--shadow-1);}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--ink);}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .nav-actions{display:none;}
  .nav-toggle{display:flex;}
}
.mobile-panel{
  position:fixed;inset:0;z-index:80;background:#fff;border-radius:24px 24px 0 0;
  padding:24px 20px 32px;overflow-y:auto;
  transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform .24s ease-out,opacity .24s ease-out;
}
.mobile-panel.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
.mobile-panel-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.mobile-panel-title{font-size:16px;font-weight:700;}
.mobile-close{
  width:36px;height:36px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:20px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.mobile-close:hover{border-color:var(--brand);color:var(--brand);}
.mobile-nav a{
  display:flex;align-items:center;height:56px;font-size:18px;font-weight:500;
  border-bottom:1px solid var(--line);transition:color .18s ease-out;
}
.mobile-nav a:hover,.mobile-nav a.is-active{color:var(--brand);}
.mobile-actions{display:flex;flex-direction:column;gap:12px;margin-top:24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-050);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-ghost:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-light{background:#fff;color:var(--brand);border-color:#fff;}
.btn-light:hover{background:var(--brand-050);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-light:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-lg{height:48px;padding:0 26px;font-size:16px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:999px;}
.btn-block{width:100%;}
.btn[disabled]{background:#C7D0E0;border-color:#C7D0E0;color:#fff;cursor:not-allowed;transform:none;box-shadow:none;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);transition:gap .18s ease-out,color .18s ease-out;}
.link-arrow:hover{gap:10px;color:var(--brand-dark);}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.08em;}
.badge-brand{background:var(--brand-050);color:var(--brand);}
.badge-accent{background:var(--accent);color:#fff;}
.badge-teal{background:var(--teal);color:#fff;}
.pill-badge{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:var(--brand-050);color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.04em;
}

/* ---------- 公告条 ---------- */
.notice{
  display:flex;align-items:center;gap:10px;min-height:36px;margin-top:6px;
  padding:6px 8px 6px 16px;background:var(--brand-050);border-radius:999px;
  color:var(--brand);font-size:13px;
}
.notice p{flex:1;line-height:1.5;}
.notice-close{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(27,77,228,.1);color:var(--brand);font-size:16px;line-height:1;
  display:flex;align-items:center;justify-content:center;transition:background-color .18s ease-out;
}
.notice-close:hover{background:rgba(27,77,228,.22);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:34px 0 20px;}
.hero::before{
  content:"";position:absolute;top:-70px;right:-170px;width:660px;height:560px;
  background:linear-gradient(135deg,rgba(27,77,228,.10) 0%,rgba(27,77,228,.02) 72%);
  transform:skewX(-14deg);border-radius:96px;pointer-events:none;z-index:0;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:44px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.4fr 1fr;gap:52px;}}
.hero h1{
  font-size:clamp(30px,5vw,46px);font-weight:700;line-height:1.25;
  letter-spacing:-.01em;margin:18px 0 14px;
}
.hero-sub{font-size:17px;line-height:1.7;color:var(--ink-2);max-width:30ch;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:36px;padding-top:24px;border-top:1px solid var(--line);}
.stat{padding:0 22px;border-left:1px solid var(--line);}
.stat:first-child{padding-left:0;border-left:0;}
.stat:last-child{padding-right:0;}
.stat-num{display:block;font-size:24px;font-weight:700;color:var(--brand);line-height:1.2;}
.stat-txt{display:block;font-size:13px;color:var(--ink-2);margin-top:4px;white-space:nowrap;}
@media (max-width:639px){
  .hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:18px 0;}
  .stat{padding:0 16px;border-left:0;}
  .stat:nth-child(odd){padding-left:0;}
}
.hero-visual{position:relative;}
.hero-img-wrap{
  border-radius:24px;overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-3);background:#E9EFF9;aspect-ratio:4/3;
}
.hero-img-wrap img{width:100%;height:100%;object-fit:cover;}
.hero-float-card{
  position:absolute;left:-18px;bottom:-20px;display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-2);
  padding:12px 16px;max-width:320px;
}
.hero-float-card img{width:64px;height:64px;border-radius:12px;object-fit:cover;flex:0 0 auto;}
.hero-float-card strong{display:block;font-size:14px;font-weight:600;line-height:1.4;}
.hero-float-card span{display:block;font-size:12px;color:var(--ink-2);line-height:1.5;margin-top:2px;}
@media (max-width:767px){
  .hero-float-card{position:static;margin-top:16px;max-width:none;left:0;bottom:0;}
}

/* ---------- 区块标题 ---------- */
.section-head{max-width:640px;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,3.2vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em;}
.section-head p{margin-top:12px;font-size:15px;color:var(--ink-2);}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.section-head-row h2{font-size:clamp(24px,3.2vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em;}

/* ---------- 阶梯 ---------- */
.ladder{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:1024px){
  .ladder{grid-template-columns:repeat(3,1fr);align-items:start;}
  .ladder-card:nth-child(1){margin-top:0;min-height:300px;}
  .ladder-card:nth-child(2){margin-top:20px;min-height:330px;}
  .ladder-card:nth-child(3){margin-top:40px;min-height:360px;}
}
.ladder-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow-1);padding:28px 26px 26px 32px;
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.ladder-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);}
.ladder-card::before{
  content:"";position:absolute;left:0;top:28px;bottom:28px;width:4px;
  border-radius:0 4px 4px 0;background:var(--brand);
}
.ladder-num{font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--brand);}
.ladder-card h3{font-size:20px;font-weight:600;line-height:1.45;margin:10px 0 10px;}
.ladder-card .ladder-desc{font-size:14px;line-height:1.75;color:var(--ink-2);min-height:49px;}
.tick-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.tick-list li{display:flex;align-items:flex-start;gap:8px;font-size:14px;color:var(--ink-2);line-height:1.6;}
.fi-yes{flex:0 0 auto;width:18px;height:18px;color:var(--teal);margin-top:2px;}
.fi-no{flex:0 0 auto;width:12px;height:2px;border-radius:2px;background:#C7D0E0;margin-top:11px;}
.ladder-card .link-arrow{margin-top:22px;}

/* ---------- 套餐对比 ---------- */
.plans{display:grid;grid-template-columns:1fr;gap:24px;align-items:start;}
@media (min-width:1024px){.plans{grid-template-columns:1fr 1.08fr 1fr;}}
.plan{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow-1);padding:28px 24px;display:flex;flex-direction:column;
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.plan:hover{box-shadow:var(--shadow-3);}
.plan--featured{border:2px solid var(--brand);box-shadow:var(--shadow-2);}
@media (min-width:1024px){.plan--featured{transform:translateY(-24px);}}
.plan-flag{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  display:inline-flex;align-items:center;height:26px;padding:0 14px;border-radius:999px;
  background:var(--accent);color:#fff;font-size:12px;font-weight:700;letter-spacing:.08em;white-space:nowrap;
}
.plan h3{font-size:20px;font-weight:600;line-height:1.45;}
.plan .plan-sub{font-size:14px;color:var(--ink-2);margin-top:6px;min-height:24px;}
.plan-features{margin-top:20px;padding-top:6px;}
.feature{
  display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-2);
  padding:9px 0;border-bottom:1px dashed var(--line);line-height:1.6;
}
.feature:last-child{border-bottom:0;}
.plan .btn{margin-top:22px;}

/* ---------- 限时入口 ---------- */
.limited{
  position:relative;overflow:hidden;background:var(--brand);border-radius:24px;color:#fff;
  padding:30px 26px;display:flex;flex-direction:column;gap:26px;
}
@media (min-width:1024px){
  .limited{flex-direction:row;align-items:center;justify-content:space-between;padding:34px 40px;min-height:150px;gap:32px;}
}
.limited::after{
  content:"";position:absolute;right:-90px;top:-70px;width:300px;height:300px;border-radius:50%;
  background:rgba(255,255,255,.07);pointer-events:none;
}
.limited-title{font-size:clamp(20px,2.6vw,26px);font-weight:700;line-height:1.35;}
.limited-desc{font-size:14px;color:rgba(255,255,255,.82);margin-top:8px;}
.countdown{display:flex;align-items:flex-start;gap:10px;position:relative;z-index:1;}
.cd-unit{display:flex;flex-direction:column;align-items:center;gap:6px;}
.cd-box{
  width:48px;height:48px;border-radius:12px;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.cd-label{font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.75);}
@media (max-width:639px){
  .cd-box{width:42px;height:42px;font-size:18px;}
}

/* ---------- 资讯卡片 ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out;overflow:hidden;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);}
.news-link{display:block;height:100%;}
.news-thumb{
  aspect-ratio:16/10;margin:12px 12px 0;border-radius:16px;overflow:hidden;background:#E9EFF9;
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:16px 18px 20px;}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--ink-2);}
.news-title{
  font-size:18px;font-weight:600;line-height:1.5;margin-top:10px;
  transition:color .18s ease-out;
}
.news-card:hover .news-title{color:var(--brand);}
.news-sum{font-size:14px;color:var(--ink-2);line-height:1.7;margin-top:8px;}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);margin-top:14px;}
.empty-state{
  grid-column:1/-1;min-height:220px;border:1px dashed #C7D0E0;border-radius:18px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  color:var(--ink-2);background:#fff;font-size:15px;
}

/* ---------- 表单 ---------- */
.consult-grid{display:grid;grid-template-columns:1fr;gap:40px;}
@media (min-width:1024px){.consult-grid{grid-template-columns:5fr 7fr;gap:48px;align-items:start;}}
.consult-copy h2{font-size:clamp(24px,3.2vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em;}
.consult-copy > p{margin-top:12px;font-size:15px;color:var(--ink-2);}
.consult-points{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.consult-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--ink-2);line-height:1.7;}
.consult-points li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:10px;
}
.consult-info{margin-top:28px;padding-top:22px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px;}
.consult-info span{font-size:14px;color:var(--ink-2);}
.consult-info strong{color:var(--ink);font-weight:600;}
.form-card{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-2);padding:26px 22px;}
@media (min-width:768px){.form-card{padding:36px;}}
.form-title{font-size:20px;font-weight:600;line-height:1.45;}
.form-tip{font-size:13px;color:var(--ink-2);margin-top:8px;}
.req-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);vertical-align:middle;}
.field{margin-top:18px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.req{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-left:6px;vertical-align:middle;}
.input{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:12px;
  background:#fff;font-size:15px;transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.input::placeholder{color:#98A2B8;}
.input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(27,77,228,.15);}
select.input{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%235B6579' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px;}
textarea.input{height:auto;min-height:120px;padding:12px 14px;resize:vertical;line-height:1.7;}
.input.is-error{border-color:var(--danger);box-shadow:0 0 0 4px rgba(226,61,61,.12);}
.err{display:none;font-size:13px;color:var(--danger);margin-top:6px;}
.err.show{display:block;}
.agree{display:flex;align-items:flex-start;gap:10px;margin-top:20px;font-size:13px;color:var(--ink-2);line-height:1.7;cursor:pointer;}
.agree input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);flex:0 0 auto;}
.form-card .btn-block{margin-top:22px;}
.form-success{display:none;margin-top:14px;font-size:14px;color:var(--teal);background:rgba(15,181,166,.08);border-radius:12px;padding:12px 14px;}
.form-success.show{display:block;}

/* ---------- FAQ ---------- */
.faq-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-1);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;cursor:pointer;
  transition:color .18s ease-out,background-color .18s ease-out;
}
@media (min-width:768px){.faq-q{padding:20px 26px;}}
.faq-q:hover{color:var(--brand);background:var(--brand-050);}
.faq-sign{position:relative;flex:0 0 auto;width:20px;height:20px;transition:transform .2s ease-out;}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--brand);border-radius:2px;}
.faq-sign::before{left:0;top:9px;width:20px;height:2px;}
.faq-sign::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.is-open .faq-sign{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out;}
.faq-a p{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--ink-2);}
@media (min-width:768px){.faq-a p{padding:0 26px 24px;}}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:64px;background:var(--footer);color:#C6CFE3;
  border-radius:24px 24px 0 0;padding:56px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:8px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand .logo-main{color:#fff;}
.footer-brand .logo-sub{color:#8492AF;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:#9FAAC4;}
.footer-keyword{margin-top:14px;font-size:13px;color:#8492AF;letter-spacing:.02em;}
.footer-acc{border-bottom:1px solid rgba(255,255,255,.08);padding:14px 0;}
@media (min-width:768px){.footer-acc{border-bottom:0;padding:0;}}
.footer-acc summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  font-size:15px;font-weight:600;color:#fff;position:relative;
}
.footer-acc summary::-webkit-details-marker{display:none;}
.footer-acc summary::after{content:"+";font-size:18px;color:#8492AF;}
@media (min-width:768px){
  .footer-acc summary{cursor:default;pointer-events:none;}
  .footer-acc summary::after{display:none;}
}
.footer-acc[open] summary::after{content:"–";}
.footer-acc-body{padding-top:10px;}
@media (min-width:768px){.footer-acc-body{padding-top:16px;}}
.footer-link{
  display:block;font-size:14px;color:#9FAAC4;padding:6px 0;
  transition:color .18s ease-out,transform .18s ease-out;
}
.footer-link:hover{color:#fff;transform:translateX(2px);}
.footer-bar{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.1);padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:#8492AF;
}
.footer-bar a{transition:color .18s ease-out;}
.footer-bar a:hover{color:#fff;}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:50;width:44px;height:44px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--brand);cursor:pointer;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-2);
  opacity:0;pointer-events:none;transition:opacity .2s ease-out,transform .2s ease-out;
}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{transform:translateY(-2px);}

@media (prefers-reduced-motion: reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .card:hover,.news-card:hover,.ladder-card:hover,.plan:hover{transform:none !important;}
}

/* roulang page: article */
:root{
  --brand:#1B4DE4;
  --brand-dark:#1438BE;
  --brand-050:#EEF3FF;
  --accent:#FF6A1F;
  --teal:#0FB5A6;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --ink:#0E1626;
  --ink-2:#5B6579;
  --line:#E4E9F2;
  --footer-bg:#0B1633;
  --shadow-1:0 1px 3px rgba(14,22,38,.06);
  --shadow-2:0 6px 18px rgba(20,40,90,.08);
  --shadow-3:0 18px 40px rgba(20,40,90,.12);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
::selection{background:rgba(27,77,228,.15)}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container-x{padding:0 32px}}
.num{font-variant-numeric:tabular-nums}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:80;display:flex;justify-content:center;pointer-events:none}
.nav-shell{
  pointer-events:auto;
  width:min(1240px,calc(100% - 32px));
  display:flex;align-items:center;gap:14px;
  padding:10px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease-out,border-color .2s ease-out;
}
.nav-shell.is-scrolled{box-shadow:var(--shadow-2);border-color:#D7E1FF}
.nav-logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--brand);display:inline-flex;align-items:center;justify-content:center;flex:none}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:15px;font-weight:700;letter-spacing:-.01em}
.logo-sub{font-size:11px;color:var(--ink-2);letter-spacing:.08em}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{font-size:15px;font-weight:500;color:var(--ink-2);padding:8px 12px;border-radius:999px;transition:color .18s,background .18s;white-space:nowrap}
.nav-link:hover{color:var(--brand);background:var(--brand-050)}
.nav-link.is-active{color:var(--brand);position:relative}
.nav-link.is-active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:2px;width:6px;height:2px;border-radius:2px;background:var(--brand)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:12px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:0}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--ink)}
.nav-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.mobile-panel{
  position:fixed;inset:0;z-index:90;background:#fff;border-radius:24px 24px 0 0;
  padding:24px 20px 24px;display:none;flex-direction:column;
  transform:translateY(8px);opacity:0;transition:opacity .2s ease-out,transform .2s ease-out;
}
.mobile-panel.is-open{display:flex}
.mobile-panel.is-visible{opacity:1;transform:translateY(0)}
.mobile-panel-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid var(--line)}
.mobile-close{width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:12px;cursor:pointer;font-size:18px;line-height:1}
.mobile-nav{display:flex;flex-direction:column;margin-top:8px;flex:1;overflow:auto}
.mobile-nav a{font-size:18px;line-height:56px;border-bottom:1px solid var(--line);color:var(--ink)}
.mobile-nav a.is-active{color:var(--brand);font-weight:600}
.mobile-actions{display:flex;gap:12px;padding-top:16px}
.mobile-actions .btn{flex:1;height:48px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 18px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn:active{transform:translateY(0);box-shadow:none}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C9D8FF}
.btn-ghost:hover{border-color:var(--brand);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-white{background:#fff;color:var(--brand)}
.btn-white:hover{transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-lg{height:48px;padding:0 24px;border-radius:12px}
.btn[disabled],.btn.is-disabled{background:#C7D0E0;color:#fff;border-color:#C7D0E0;cursor:not-allowed;box-shadow:none;transform:none}
.text-link{color:var(--brand);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;transition:gap .18s,color .18s}
.text-link:hover{gap:10px;color:var(--brand-dark)}

/* ---------- 徽章 / 卡片 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 12px;border-radius:999px;font-size:12px;letter-spacing:.08em;font-weight:600}
.badge-brand{background:var(--brand-050);color:var(--brand)}
.badge-accent{background:var(--accent);color:#fff}
.badge-teal{background:var(--teal);color:#fff}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-1);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.pill-nav{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;background:var(--brand-050);color:var(--brand);font-size:13px;font-weight:600}

/* ---------- 表单 ---------- */
.input{
  width:100%;height:48px;padding:0 14px;border-radius:12px;border:1px solid var(--line);
  background:#fff;font-size:15px;transition:border-color .18s,box-shadow .18s;
}
.input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,77,228,.18)}
textarea.input{height:auto;padding:12px 14px;resize:vertical}
.field-label{font-size:13px;color:var(--ink-2);display:block;margin-bottom:6px}
.req-dot{color:var(--accent);font-size:12px;margin-left:4px}

/* ---------- 主体 ---------- */
.page-main{padding-top:104px}
.article-head{background:var(--brand-050);padding:32px 0 36px;border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--ink-2);margin-bottom:20px}
.breadcrumb a{transition:color .18s}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#A9B3C6}
.breadcrumb .current{color:var(--ink)}
.head-inner{max-width:860px}
.article-title{
  font-size:clamp(30px,3.6vw,36px);line-height:1.3;font-weight:700;letter-spacing:-.01em;
  margin-top:16px;overflow-wrap:break-word;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--ink-2);margin-top:18px}
.dot-sep{color:#B9C2D2}

.article-wrap{padding:48px 0 24px}
.article-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:start}
@media (min-width:1024px){.article-grid{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px}}

.article-col{min-width:0}
.article-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);padding:28px 24px;max-width:100%;
  font-size:16px;line-height:1.85;color:#1B2436;overflow-wrap:break-word;
}
@media (min-width:768px){.article-body{padding:40px 44px}}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:22px;line-height:1.4;font-weight:700;margin:2em 0 .8em;
  padding-left:12px;border-left:4px solid var(--brand);scroll-margin-top:120px;
}
.article-body h3{font-size:18px;font-weight:600;margin:1.6em 0 .6em;scroll-margin-top:120px}
.article-body strong{font-weight:700}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(27,77,228,.32)}
.article-body a:hover{color:var(--brand-dark)}
.article-body blockquote{
  margin:1.4em 0;padding:16px 20px;background:var(--brand-050);
  border-left:4px solid var(--brand);border-radius:0 12px 12px 0;color:#243149;
}
.article-body ul{list-style:none;padding-left:0;margin:0 0 1.2em}
.article-body ul li{position:relative;padding-left:20px;margin:.4em 0}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--brand)}
.article-body ol{list-style:none;counter-reset:item;padding-left:0;margin:0 0 1.2em}
.article-body ol li{counter-increment:item;position:relative;padding-left:32px;margin:.5em 0}
.article-body ol li::before{
  content:counter(item);position:absolute;left:0;top:.18em;width:22px;height:22px;border-radius:50%;
  background:var(--brand-050);color:var(--brand);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.article-body img{border-radius:16px;margin:1.4em auto;box-shadow:var(--shadow-1)}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:8px}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;margin:1.4em 0;font-size:14.5px;
  background:#FBFCFE;border:1px solid var(--line);border-radius:14px;overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.article-body th{background:var(--brand-050);color:var(--brand);font-weight:600}
.article-body tr:last-child td{border-bottom:0}

.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.tag-pill{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--ink-2);transition:border-color .18s,color .18s}
.tag-pill:hover{border-color:var(--brand);color:var(--brand)}
.article-foot{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}

.empty-state{
  border:1px dashed var(--line);background:#fff;border-radius:var(--r-lg);
  padding:48px 28px;text-align:center;
}
.empty-state .es-icon{width:56px;height:56px;margin:0 auto 16px;border-radius:16px;background:var(--brand-050);display:flex;align-items:center;justify-content:center}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:8px}
.empty-state p{color:var(--ink-2);font-size:15px;margin-bottom:20px}

/* ---------- 侧栏 ---------- */
.side-col{min-width:0}
.side-stack{display:flex;flex-direction:column;gap:20px}
@media (min-width:1024px){.side-stack{position:sticky;top:104px}}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-1);padding:22px}
.side-card h2{font-size:15px;font-weight:700;margin-bottom:14px;padding-left:10px;border-left:3px solid var(--brand)}
.toc-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:2px}
.toc-link{display:block;font-size:14px;color:var(--ink-2);padding:7px 10px;border-radius:8px;border-left:3px solid transparent;transition:color .18s,background .18s,border-color .18s}
.toc-link:hover{color:var(--brand);background:var(--brand-050)}
.toc-link.is-active{color:var(--brand);font-weight:600;border-left-color:var(--brand);background:var(--brand-050)}
.toc-empty{font-size:14px;color:var(--ink-2);padding:6px 10px}
.mini-list{display:flex;flex-direction:column;gap:14px}
.mini-item{display:flex;gap:12px;align-items:flex-start;transition:transform .18s ease-out}
.mini-item:hover{transform:translateX(2px)}
.mini-item img{width:64px;height:64px;border-radius:12px;object-fit:cover;flex:none}
.mini-item .mini-title{font-size:14px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-item:hover .mini-title{color:var(--brand)}
.mini-item .mini-meta{font-size:12px;color:var(--ink-2);margin-top:4px}
.side-cta{background:var(--brand-050);border:1px solid #D8E3FF;border-radius:var(--r-md);padding:22px}
.side-cta p{font-size:14px;color:#33406080;color:#334060;margin-bottom:14px}
.side-cta .btn{width:100%}

/* ---------- 版块标题 ---------- */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:76px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
.section-head h2{font-size:clamp(24px,3.2vw,32px);font-weight:700;line-height:1.3}
.section-head p{font-size:15px;color:var(--ink-2);margin-top:8px}

/* ---------- 推荐卡片 ---------- */
.grid-3{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.news-card{display:flex;flex-direction:column;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-1);transition:transform .18s ease-out,box-shadow .18s ease-out}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.news-card .thumb{aspect-ratio:16/10;overflow:hidden;background:#EDF1F8}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out}
.news-card:hover .thumb img{transform:scale(1.03)}
.news-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.news-card .meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--ink-2)}
.news-card h3{font-size:18px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover h3{color:var(--brand)}
.news-card .desc{font-size:14px;color:var(--ink-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .more{margin-top:auto;padding-top:10px;font-size:14px;font-weight:600;color:var(--brand)}

/* ---------- FAQ ---------- */
.faq-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-1);overflow:hidden}
.faq-item+.faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;cursor:pointer;transition:color .18s;
}
.faq-q:hover{color:var(--brand)}
.faq-q .plus{width:16px;height:16px;position:relative;flex:none;transition:transform .2s ease-out}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-q .plus::before{left:0;top:7px;width:16px;height:2px}
.faq-q .plus::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out;padding:0 24px;color:var(--ink-2);font-size:15px;line-height:1.8}
.faq-item.is-open .faq-a{padding-bottom:20px}

/* ---------- CTA ---------- */
.cta-band{background:var(--brand);border-radius:var(--r-lg);box-shadow:var(--shadow-2);padding:28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}
.cta-band h2{color:#fff;font-size:clamp(20px,2.6vw,26px);font-weight:700;line-height:1.35}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;margin-top:8px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:#B9C4DC;border-radius:24px 24px 0 0;margin-top:64px;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:12px;color:#98A5C0}
.footer-brand .nav-logo{margin-bottom:6px}
.footer-brand .logo-main{color:#fff}
.footer-brand .logo-sub{color:#8E9BB6}
.footer-keyword{font-size:13px;color:#7F8CAB;letter-spacing:.02em}
.footer-acc summary{
  list-style:none;cursor:default;color:#fff;font-size:15px;font-weight:600;
  padding-bottom:12px;border-bottom:1px solid rgba(255,255,255,.1);margin-bottom:12px;
}
.footer-acc summary::-webkit-details-marker{display:none}
.footer-acc-body{display:flex;flex-direction:column;gap:10px}
.footer-link{font-size:14px;color:#A9B6D1;transition:color .18s,transform .18s;display:inline-block}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-bar{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8593B2;
}
.footer-bar a{color:#A9B6D1}
.footer-bar a:hover{color:#fff}
@media (max-width:767px){
  .footer-acc summary{cursor:pointer}
  .footer-acc-body{padding-bottom:6px}
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:70;width:44px;height:44px;border-radius:12px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-2);cursor:pointer;
  display:flex;align-items:center;justify-content:center;color:var(--brand);
  opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s,transform .2s,visibility .2s;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{box-shadow:var(--shadow-3)}

@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-actions{display:none}
  .nav-toggle{display:flex}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.001ms !important;animation-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --brand:#1B4DE4;
  --brand-dark:#1438BE;
  --brand-050:#EEF3FF;
  --accent:#FF6A1F;
  --teal:#0FB5A6;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --ink:#0E1626;
  --ink-2:#5B6579;
  --line:#E4E9F2;
  --shadow-1:0 1px 3px rgba(14,22,38,.06);
  --shadow-2:0 6px 18px rgba(20,40,90,.08);
  --shadow-3:0 18px 40px rgba(20,40,90,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:system-ui,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:-0.01em}
h1{font-size:clamp(30px,5vw,46px);line-height:1.25}
h2{font-size:clamp(24px,3.2vw,32px);line-height:1.3}
h3{font-size:20px;line-height:1.45;font-weight:600}
h4{font-size:16px;line-height:1.5;font-weight:600}
p{margin:0}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0}
input,select,textarea{font:inherit}
.tnum{font-variant-numeric:tabular-nums}
::selection{background:rgba(27,77,228,.15)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container-x{padding:0 32px}}
.section{padding:64px 0}
@media(min-width:768px){.section{padding:96px 0}}
.sec-head{max-width:720px}
.sec-head p{color:var(--ink-2);margin-top:12px;font-size:15px}

/* 悬浮胶囊导航 */
.site-header{position:fixed;left:0;right:0;top:16px;z-index:80;display:flex;justify-content:center}
.nav-shell{display:flex;align-items:center;gap:14px;width:min(1240px,calc(100% - 32px));padding:8px 12px 8px 16px;background:rgba(255,255,255,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.9);border-radius:999px;box-shadow:var(--shadow-1);transition:box-shadow .2s ease,border-color .2s ease}
.site-header.is-scrolled .nav-shell{box-shadow:var(--shadow-2);border-color:#DCE5FF}
.nav-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--brand);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:15px;font-weight:700}
.logo-sub{font-size:11px;color:var(--ink-2);letter-spacing:.14em}
.nav-menu{display:none;align-items:center;gap:2px;margin-left:auto}
.nav-link{position:relative;padding:8px 14px;border-radius:999px;font-size:15px;font-weight:500;color:var(--ink);transition:background-color .18s ease,color .18s ease}
.nav-link:hover{background:var(--brand-050);color:var(--brand)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);width:5px;height:5px;border-radius:50%;background:var(--brand)}
.nav-actions{display:none;align-items:center;gap:8px;margin-left:8px}
.nav-toggle{display:flex;align-items:center;justify-content:center;width:40px;height:40px;margin-left:auto;border-radius:999px;border:1px solid var(--line);background:#fff;cursor:pointer}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);border-radius:2px}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
@media(min-width:1024px){
  .nav-menu{display:flex}
  .nav-actions{display:flex}
  .nav-toggle{display:none}
}
.mobile-panel{position:fixed;left:0;right:0;top:0;bottom:0;z-index:90;display:none;flex-direction:column;background:#fff;border-radius:24px 24px 0 0;padding:22px 20px 26px;overflow-y:auto}
.mobile-panel.is-open{display:flex}
.mobile-panel .panel-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line)}
.mobile-panel .panel-close{width:40px;height:40px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:18px;line-height:1;cursor:pointer}
.mobile-panel nav{display:flex;flex-direction:column;margin-top:8px}
.mobile-panel nav a{display:flex;align-items:center;justify-content:space-between;height:56px;font-size:18px;font-weight:500;border-bottom:1px solid var(--line)}
.mobile-panel nav a.is-active{color:var(--brand)}
.mobile-panel .panel-foot{display:flex;flex-direction:column;gap:10px;margin-top:auto;padding-top:22px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:12px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C9D6FB}
.btn-ghost:hover{border-color:var(--brand);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost:active{transform:none;box-shadow:none}
.btn-white{background:#fff;color:var(--brand)}
.btn-white:hover{background:#F2F6FF;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{background:#C7D0E0;color:#fff;border-color:#C7D0E0;pointer-events:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:15px;font-weight:600;transition:gap .18s ease,color .18s ease}
.btn-text:hover{gap:10px;color:var(--brand-dark)}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.08em;background:var(--brand-050);color:var(--brand)}
.badge-accent{background:var(--accent);color:#fff}
.badge-teal{background:rgba(15,181,166,.12);color:#0A8E83}
.pill-nav{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;font-size:13px;background:#fff;border:1px solid var(--line);color:var(--ink-2)}

/* 卡片 */
.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.card-pad{padding:24px}
@media(min-width:768px){.card-pad{padding:28px}}

/* 页面 Hero */
.page-hero{position:relative;padding:118px 0 52px;overflow:hidden}
.page-hero::before{content:"";position:absolute;left:0;right:0;top:0;bottom:0;background:var(--brand-050);clip-path:polygon(0 0,100% 0,100% 70%,0 100%);z-index:0}
.page-hero > .container-x{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--ink-2);margin-bottom:18px}
.breadcrumb a{transition:color .18s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#B7C1D6}
.breadcrumb .current{color:var(--ink)}
.hero-copy h1{margin:14px 0 14px}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-media{border-radius:24px;overflow:hidden;box-shadow:var(--shadow-3);background:#E3EAF8;aspect-ratio:16/11}
.hero-media img{width:100%;height:100%;object-fit:cover}
.stat-row{display:flex;flex-wrap:wrap;margin-top:30px}
.stat{padding:0 18px;border-left:1px solid rgba(27,77,228,.18)}
.stat:first-child{border-left:0;padding-left:0}
.stat b{display:block;font-size:24px;line-height:1.2;color:var(--brand);font-variant-numeric:tabular-nums}
.stat span{font-size:13px;color:var(--ink-2)}

/* 图文交替 */
.zigzag{display:grid;gap:36px;align-items:center}
@media(min-width:900px){
  .zigzag{grid-template-columns:1fr 1fr;gap:56px}
  .zigzag.zig-rev .zig-media{order:2}
}
.zig-media{border-radius:24px;overflow:hidden;box-shadow:var(--shadow-3);background:#E3EAF8;aspect-ratio:16/11}
.zig-media img{width:100%;height:100%;object-fit:cover}
.zig-body h2{margin-bottom:14px}
.zig-body > p{color:var(--ink-2);font-size:15px}
.zig-list{margin-top:20px;display:flex;flex-direction:column;gap:14px}
.zig-list li{display:flex;gap:12px}
.zig-list li h4{font-size:15px}
.zig-list li p{font-size:14px;color:var(--ink-2)}
.zig-idx{width:24px;height:24px;border-radius:8px;background:var(--brand-050);color:var(--brand);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:3px}

/* 步骤 */
.step-list{margin-top:22px;display:flex;flex-direction:column;gap:18px}
.step-item{display:flex;gap:14px}
.step-num{width:32px;height:32px;border-radius:50%;background:var(--brand);color:#fff;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.step-item h4{font-size:16px}
.step-item p{font-size:14px;color:var(--ink-2)}

/* 清单 */
.check-list{display:flex;flex-direction:column;gap:14px}
.tick{position:relative;padding-left:26px;font-size:15px;color:var(--ink-2);line-height:1.7}
.tick::before{content:"";position:absolute;left:0;top:.55em;width:13px;height:7px;border-left:2px solid var(--teal);border-bottom:2px solid var(--teal);transform:rotate(-45deg)}
.fact-card{display:flex;gap:12px;padding:16px 18px;border:1px solid var(--line);border-radius:14px;background:#fff;transition:box-shadow .18s ease,transform .18s ease}
.fact-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.fact-key{font-size:12px;font-weight:700;color:var(--brand);letter-spacing:.08em;flex-shrink:0;padding-top:3px}
.fact-card p{font-size:14px;color:var(--ink-2)}

/* 咨询小卡 */
.consult-mini{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-1);padding:20px 22px}
.consult-mini p{font-size:14px;color:var(--ink-2);margin:8px 0 16px}

/* FAQ */
.faq{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-1);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;text-align:left;font-size:16px;font-weight:600;cursor:pointer;transition:color .18s ease}
.faq-q:hover{color:var(--brand)}
.faq-q .plus{position:relative;width:16px;height:16px;flex-shrink:0;transition:transform .2s ease}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-q .plus::before{left:0;top:7px;width:16px;height:2px}
.faq-q .plus::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-a{display:none;padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--ink-2)}
.faq-item.is-open .faq-a{display:block}

/* CTA 条 */
.cta-bar{background:var(--brand);border-radius:24px;padding:34px 28px;display:flex;flex-direction:column;gap:20px;align-items:flex-start;box-shadow:var(--shadow-3)}
@media(min-width:768px){.cta-bar{flex-direction:row;align-items:center;justify-content:space-between;padding:38px 40px}}
.cta-bar h2{color:#fff;font-size:clamp(22px,2.6vw,28px)}
.cta-bar p{color:rgba(255,255,255,.82);font-size:14px;margin-top:8px}

/* 表单 */
.field-label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:8px}
.req{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-left:6px;vertical-align:middle}
.input{width:100%;height:48px;padding:0 14px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink);transition:border-color .18s ease,box-shadow .18s ease}
textarea.input{height:auto;min-height:118px;padding:12px 14px;line-height:1.7;resize:vertical}
.input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(27,77,228,.14);outline:none}
.input.is-error{border-color:#E5484D}
.err-msg{display:none;font-size:13px;color:#D93A3F;margin-top:6px}
.err-msg.is-show{display:block}
.checkbox-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-2)}

/* 页脚 */
.site-footer{margin-top:72px;background:#0B1633;color:#C8D2E8;border-radius:24px 24px 0 0;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}}
.site-footer .logo-sub{color:#8FA0C6}
.footer-brand p{font-size:14px;line-height:1.8;color:#9BA8C6;margin-top:12px;max-width:360px}
.footer-keyword{color:#7E8DB2 !important;font-size:13px;letter-spacing:.04em}
.footer-acc summary{list-style:none;cursor:pointer;font-size:15px;font-weight:600;color:#fff;padding:2px 0 14px;display:flex;align-items:center;justify-content:space-between}
.footer-acc summary::-webkit-details-marker{display:none}
.footer-acc summary::after{content:"+";color:#7E8DB2;font-weight:400}
.footer-acc[open] summary::after{content:"−"}
.footer-acc-body{display:flex;flex-direction:column;gap:10px;padding-bottom:14px}
.footer-link{font-size:14px;color:#9BA8C6;transition:color .18s ease,transform .18s ease;display:inline-block}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-bar{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-direction:column;gap:10px;font-size:13px;color:#8B98B8}
@media(min-width:768px){.footer-bar{flex-direction:row;align-items:center;justify-content:space-between}}
.footer-bar a:hover{color:#fff}

/* 动效降级 */
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
  .card:hover,.btn:hover,.fact-card:hover,.footer-link:hover{transform:none !important}
}

/* roulang page: category2 */
:root{
  --brand:#1B4DE4;
  --brand-dark:#1438BE;
  --brand-050:#EEF3FF;
  --accent:#FF6A1F;
  --teal:#0FB5A6;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --ink:#0E1626;
  --ink-2:#5B6579;
  --line:#E4E9F2;
  --shadow-1:0 1px 3px rgba(14,22,38,.06);
  --shadow-2:0 6px 18px rgba(20,40,90,.08);
  --shadow-3:0 18px 40px rgba(20,40,90,.12);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(27,77,228,.15)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container-x{padding:0 32px}}
@media(min-width:1280px){.container-x{max-width:1240px}}

.sec{padding:56px 0}
@media(min-width:768px){.sec{padding:88px 0}}

.h1{font-size:clamp(30px,5vw,46px);font-weight:700;line-height:1.25;letter-spacing:-.01em;margin:0}
.h2{font-size:clamp(24px,3.2vw,32px);font-weight:700;line-height:1.3;margin:0}
.h3{font-size:20px;font-weight:600;line-height:1.45;margin:0}
.lead{font-size:16px;line-height:1.75;color:var(--ink-2);margin:0}
.small{font-size:14px;line-height:1.7;color:var(--ink-2);margin:0}
.eyebrow{font-size:12px;letter-spacing:.08em;color:var(--brand);font-weight:600}
.sec-head{margin-bottom:32px}
.sec-head .h2{margin-top:10px}
.sec-head .lead{margin-top:12px;max-width:720px}
@media(min-width:768px){.sec-head{margin-bottom:44px}}

/* ============ 悬浮胶囊导航 ============ */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:60;
  display:flex;justify-content:center;pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  width:min(1240px,calc(100% - 32px));
  display:flex;align-items:center;gap:14px;
  padding:8px 10px 8px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease-out,border-color .2s ease-out;
}
.site-header.is-scrolled .nav-shell{box-shadow:var(--shadow-2);border-color:var(--brand-050)}
.nav-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  display:grid;place-items:center;width:36px;height:36px;border-radius:10px;
  background:var(--brand);flex:0 0 auto;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.logo-sub{font-size:11px;color:var(--ink-2);letter-spacing:.08em}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  border-radius:999px;font-size:15px;font-weight:500;color:var(--ink);
  transition:color .18s ease-out,background .18s ease-out;
}
.nav-link:hover{color:var(--brand);background:var(--brand-050)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:999px;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
  background:var(--brand-050);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand)}
.mobile-panel{
  position:fixed;inset:0;z-index:70;background:#fff;border-radius:24px 24px 0 0;
  padding:22px 22px 28px;overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .22s ease-out,transform .22s ease-out,visibility .22s;
}
.mobile-panel.is-open{opacity:1;visibility:visible;transform:none}
.mobile-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.mobile-close{width:38px;height:38px;border-radius:999px;background:var(--brand-050);color:var(--brand);font-size:20px;line-height:1}
.mobile-nav{margin-top:8px}
.mobile-link{
  display:flex;align-items:center;min-height:56px;font-size:18px;
  border-bottom:1px solid var(--line);color:var(--ink);
}
.mobile-link.is-active{color:var(--brand);font-weight:600}
.mobile-actions{display:grid;gap:12px;margin-top:26px}
body.nav-locked{overflow:hidden}
@media(max-width:1023px){
  .nav-menu,.nav-actions{display:none}
  .nav-toggle{display:flex;margin-left:auto}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:none;box-shadow:var(--shadow-1)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-050);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost:active{transform:none;box-shadow:var(--shadow-1)}
.btn-white{background:#fff;color:var(--brand);box-shadow:var(--shadow-1)}
.btn-white:hover{transform:translateY(-1px);box-shadow:var(--shadow-3)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-pill{border-radius:999px}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);
  font-size:15px;font-weight:600;transition:gap .18s ease-out,color .18s ease-out;
}
.btn-link:hover{gap:10px;color:var(--brand-dark)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.06em;
}
.badge-brand{background:var(--brand-050);color:var(--brand)}
.badge-accent{background:var(--accent);color:#fff}
.badge-teal{background:var(--teal);color:#fff}
.tag{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--ink);font-size:14px;
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.tag:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-2)}

/* ============ 卡片 ============ */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.card-hover:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.card-pad{padding:24px}
@media(min-width:768px){.card-pad{padding:28px}}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--ink-2)}
.crumb a{color:var(--ink-2);transition:color .18s ease-out}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#B9C2D4}
.crumb .now{color:var(--ink);font-weight:600}

/* ============ 分类页小 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-2);
  margin-top:96px;
}
.page-hero-grid{display:grid;gap:0}
@media(min-width:1024px){.page-hero-grid{grid-template-columns:7fr 5fr}}
.page-hero-body{padding:26px 24px 30px}
@media(min-width:768px){.page-hero-body{padding:34px 36px 38px}}
.page-hero .h1{margin-top:14px}
.hero-sub{margin:12px 0 0;font-size:16px;line-height:1.7;color:var(--ink-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.hero-facts{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;padding-top:20px;border-top:1px solid var(--line)}
.hero-fact{display:flex;flex-direction:column;gap:2px}
.hero-fact b{font-size:20px;font-weight:700;color:var(--brand);line-height:1.2}
.hero-fact span{font-size:13px;color:var(--ink-2)}
.page-hero-media{position:relative;min-height:200px}
.page-hero-media img{width:100%;height:100%;object-fit:cover;min-height:200px}
@media(min-width:1024px){.page-hero-media{min-height:100%}}
.hero-slice{
  position:absolute;inset:auto auto 0 0;width:58%;height:22px;background:var(--brand-050);
  border-radius:0 24px 0 0;
}
@media(min-width:1024px){.hero-slice{width:26%;height:100%;inset:0 0 0 auto;border-radius:24px 0 0 24px}}

/* ============ 速览指标 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--line);margin-top:24px}
@media(min-width:768px){.stat-grid{grid-template-columns:repeat(4,1fr)}}
.stat-item{padding:18px 16px 6px;border-bottom:1px solid var(--line)}
@media(min-width:768px){.stat-item{border-bottom:0;border-left:1px solid var(--line)}.stat-item:first-child{border-left:0}}
.stat-item b{display:block;font-size:24px;font-weight:700;color:var(--brand);line-height:1.2}
.stat-item span{font-size:13px;color:var(--ink-2)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}

/* ============ 步骤线 ============ */
.step-list{position:relative;margin-top:8px}
.step{position:relative;padding-left:56px;padding-bottom:30px}
.step:last-child{padding-bottom:0}
.step:not(:last-child)::before{
  content:"";position:absolute;left:19px;top:44px;bottom:2px;width:2px;background:var(--brand-050);
}
.step-num{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:999px;
  display:grid;place-items:center;background:var(--brand-050);color:var(--brand);
  font-size:15px;font-weight:700;border:2px solid #fff;box-shadow:var(--shadow-1);
}
.step h3{margin:4px 0 6px}
.step p{margin:0;font-size:15px;line-height:1.8;color:var(--ink-2)}
.step-meta{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:13px;color:var(--teal);font-weight:600}
.step-core{position:absolute;left:13px;top:44px;width:14px;height:14px;border-radius:50%;background:var(--teal);border:3px solid #fff;display:none}
@media(max-width:639px){
  .step:not(:last-child)::before{display:none}
  .step{padding-left:52px;padding-bottom:24px}
}

/* ============ 节奏对照列表条 ============ */
.rhy-row{
  display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);
}
.rhy-row:last-child{border-bottom:0;padding-bottom:0}
.rhy-mark{
  flex:0 0 auto;width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:var(--brand-050);color:var(--brand);font-size:14px;font-weight:700;
}
.rhy-row h3{margin:0 0 4px}
.rhy-row p{margin:0;font-size:14px;line-height:1.75;color:var(--ink-2)}
.media-frame{border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1)}
.media-frame img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* ============ 咨询条 ============ */
.consult-bar{
  background:var(--brand-050);border:1px solid #DCE6FF;border-radius:var(--r-lg);
  padding:24px;display:grid;gap:20px;align-items:center;
}
@media(min-width:860px){.consult-bar{grid-template-columns:1fr auto;padding:30px 32px}}
.consult-bar h2{margin:0 0 6px}
.consult-bar p{margin:0;font-size:15px;color:var(--ink-2);max-width:52em}

/* ============ FAQ ============ */
.faq-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-1);padding:8px 20px}
@media(min-width:768px){.faq-card{padding:10px 28px}}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 0;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--brand)}
.faq-plus{
  flex:0 0 auto;width:26px;height:26px;border-radius:999px;background:var(--brand-050);
  color:var(--brand);display:grid;place-items:center;font-size:16px;line-height:1;
  transition:transform .22s ease-out;
}
.faq-item.is-open .faq-plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out}
.faq-a-inner{padding:0 40px 20px 0;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ============ CTA 条 ============ */
.cta-bar{
  background:var(--brand);border-radius:var(--r-lg);color:#fff;
  padding:26px 24px;display:grid;gap:18px;align-items:center;box-shadow:var(--shadow-2);
}
@media(min-width:860px){.cta-bar{grid-template-columns:1fr auto;padding:34px 40px}}
.cta-bar h2{margin:0 0 6px;color:#fff}
.cta-bar p{margin:0;font-size:15px;color:rgba(255,255,255,.82)}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:72px;background:#0B1633;color:#C7D0E0;
  border-radius:24px 24px 0 0;padding:52px 0 22px;
}
.footer-grid{display:grid;gap:30px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}}
.footer-brand .nav-logo{margin-bottom:16px}
.footer-brand .logo-main{color:#fff}
.footer-brand .logo-sub{color:#9FB0D0}
.footer-brand p{margin:0 0 10px;font-size:14px;line-height:1.75;color:#9FB0D0}
.footer-keyword{margin-top:14px;color:#fff;font-size:14px}
.footer-acc summary{
  list-style:none;cursor:pointer;color:#fff;font-size:15px;font-weight:600;
  margin-bottom:12px;display:flex;align-items:center;justify-content:space-between;
}
.footer-acc summary::-webkit-details-marker{display:none}
.footer-acc summary::after{content:"+";color:#7E8DB0;font-weight:400}
.footer-acc[open] summary::after{content:"−"}
.footer-link{
  display:block;padding:7px 0;font-size:14px;color:#9FB0D0;
  transition:color .18s ease-out,transform .18s ease-out;
}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-bar{
  display:flex;flex-wrap:wrap;gap:12px 20px;justify-content:space-between;align-items:center;
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:#8E9BB5;
}
.footer-bar a{color:#8E9BB5;transition:color .18s ease-out}
.footer-bar a:hover{color:#fff}

/* ============ 动效降级 ============ */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .card-hover:hover,.btn:hover,.tag:hover,.footer-link:hover{transform:none!important}
}

/* roulang page: category3 */
:root{
  --brand:#1B4DE4;
  --brand-dark:#1438BE;
  --brand-050:#EEF3FF;
  --accent:#FF6A1F;
  --teal:#0FB5A6;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --ink:#0E1626;
  --ink-2:#5B6579;
  --line:#E4E9F2;
  --shadow-1:0 1px 3px rgba(14,22,38,.06);
  --shadow-2:0 6px 18px rgba(20,40,90,.08);
  --shadow-3:0 18px 40px rgba(20,40,90,.12);
  --r-lg:24px;--r-md:18px;--r-sm:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:112px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;font-variant-numeric:tabular-nums}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink)}
p{margin:0}
::selection{background:rgba(27,77,228,.15)}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container-x{padding:0 32px}}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:80}
.nav-shell{width:min(1240px,calc(100% - 32px));margin:0 auto;display:flex;align-items:center;gap:14px;padding:8px 10px 8px 14px;border-radius:999px;background:rgba(255,255,255,.86);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow-1);transition:box-shadow .2s ease,border-color .2s ease}
.site-header.is-scrolled .nav-shell{box-shadow:var(--shadow-2);border-color:#DCE5FB}
.brand,.nav-logo{display:flex;align-items:center;gap:10px}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--brand);display:flex;align-items:center;justify-content:center;flex:none}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:15px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.logo-sub{font-size:11px;color:var(--ink-2);letter-spacing:.08em}
.nav-menu{display:none;align-items:center;gap:2px;margin-left:auto}
@media(min-width:1024px){.nav-menu{display:flex}}
.nav-link{position:relative;padding:8px 13px;border-radius:999px;font-size:15px;font-weight:500;color:var(--ink-2);white-space:nowrap;transition:color .18s ease,background-color .18s ease}
.nav-link:hover{color:var(--brand);background:var(--brand-050)}
.nav-link.is-active{color:var(--brand);background:var(--brand-050)}
.nav-link.is-active::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:4px;height:4px;border-radius:999px;background:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
@media(min-width:1024px){.nav-actions{margin-left:0}}
.nav-actions .btn-ghost{display:none}
@media(min-width:1180px){.nav-actions .btn-ghost{display:inline-flex}}
.nav-toggle{width:40px;height:40px;border-radius:999px;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;background:#fff}
@media(min-width:1024px){.nav-toggle{display:none}}
.nav-toggle span{display:block;width:16px;height:1.6px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--ink);border-radius:2px}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.mobile-panel{position:fixed;inset:0;z-index:90;background:#fff;border-radius:24px 24px 0 0;padding:96px 20px 24px;display:none;flex-direction:column;overflow:auto}
.mobile-panel.is-open{display:flex}
.m-link{display:flex;align-items:center;height:56px;font-size:18px;font-weight:500;border-bottom:1px solid var(--line);color:var(--ink)}
.m-link.is-active{color:var(--brand)}
.mobile-actions{margin-top:auto;padding-top:24px;display:grid;gap:12px}
body.nav-locked{overflow:hidden}

/* ---------- 按钮 / 徽章 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-sm);border:1px solid transparent;font-weight:600;font-size:15px;padding:0 22px;height:48px;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:999px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C9D8FF}
.btn-ghost:hover{background:var(--brand-050);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost:active{transform:translateY(0);box-shadow:none}
.btn:focus-visible,.nav-toggle:focus-visible,.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn[disabled]{background:#C7D0E0;color:#fff;border-color:transparent;pointer-events:none}
.link-more{color:var(--brand);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px}
.link-more:hover{text-decoration:underline}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.08em;font-weight:600}
.badge-brand{background:var(--brand-050);color:var(--brand)}
.badge-accent{background:var(--accent);color:#fff}
.badge-teal{background:var(--teal);color:#fff}

/* ---------- 通用版式 ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:88px 0}}
.section-head{margin-bottom:28px}
.h2{font-size:clamp(24px,3.2vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.lead{color:var(--ink-2);font-size:15px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-1);padding:26px;transition:transform .2s ease,box-shadow .2s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.crumb{font-size:12px;color:var(--ink-2);display:flex;flex-wrap:wrap;align-items:center}
.crumb a:hover{color:var(--brand)}
.crumb .sep{margin:0 8px;color:#B7C0D2}
.crumb .current{color:var(--ink)}

/* ---------- 页面小 Hero ---------- */
.page-hero{padding:120px 0 0}
.hero-card{position:relative;overflow:hidden;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-2);display:grid;grid-template-columns:1fr}
@media(min-width:1024px){.hero-card{grid-template-columns:1.35fr 1fr}}
.hero-body{padding:32px 26px 34px}
@media(min-width:768px){.hero-body{padding:44px 44px 46px}}
.hero-title{font-size:clamp(28px,4.4vw,42px);font-weight:700;line-height:1.25;letter-spacing:-.01em;margin:16px 0 12px}
.hero-sub{color:var(--ink-2);font-size:16px;max-width:520px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.hero-media{background-image:url(/assets/images/backpic/back-2.webp);background-size:cover;background-position:center;min-height:220px;position:relative}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(27,77,228,.18),rgba(27,77,228,0))}
@media(min-width:1024px){.hero-media{min-height:100%}}
.hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 0;margin-top:28px;border-top:1px solid var(--line);padding-top:20px}
@media(min-width:640px){.hero-stats{grid-template-columns:repeat(4,1fr)}}
.stat{padding-right:14px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat-num{font-size:24px;font-weight:700;color:var(--brand);line-height:1.2}
.stat-txt{font-size:13px;color:var(--ink-2)}

/* ---------- 要点两栏 ---------- */
.split{display:grid;gap:28px;align-items:center}
@media(min-width:1024px){.split{grid-template-columns:1fr 1fr;gap:48px}}
.check-list{display:grid;gap:18px;margin-top:22px}
.check-item{display:flex;gap:12px;align-items:flex-start}
.check-ico{flex:none;width:22px;height:22px;border-radius:6px;background:rgba(15,181,166,.12);display:flex;align-items:center;justify-content:center;margin-top:4px}
.check-item h3{font-size:16px;font-weight:600;margin-bottom:4px}
.check-item p{font-size:14px;color:var(--ink-2);line-height:1.7}
.pic{border-radius:16px;overflow:hidden;box-shadow:var(--shadow-2);border:1px solid var(--line);background:#fff}
.pic img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}

/* ---------- 对照矩阵 ---------- */
.matrix-wrap{margin-top:24px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);box-shadow:var(--shadow-1);overflow:hidden}
.matrix-row{display:grid;grid-template-columns:1fr;gap:10px;padding:18px 20px;border-top:1px solid var(--line);transition:background-color .18s ease}
.matrix-row:hover{background:#FAFBFF}
.matrix-row:first-child{border-top:0}
@media(min-width:900px){.matrix-row{grid-template-columns:1.7fr 1fr 1fr;align-items:center;gap:18px}}
.matrix-head{background:var(--brand-050)}
.matrix-head:hover{background:var(--brand-050)}
.matrix-head .matrix-name,.matrix-head .cell{font-weight:700;color:var(--ink);font-size:15px}
.matrix-name{font-weight:600;font-size:15px}
.cell{display:flex;align-items:center;gap:8px;font-size:15px}
.cell-key{display:none;color:var(--ink-2);font-size:13px;min-width:70px}
@media(max-width:899px){.cell-key{display:inline}}
.mark-yes{color:var(--teal);font-weight:700;display:inline-flex;align-items:center;gap:6px}
.mark-no{color:#9AA5B8;font-weight:700}
.cell-text{color:var(--ink-2);font-size:14px}
.compare-cards{display:grid;gap:20px}
@media(min-width:768px){.compare-cards{grid-template-columns:1fr 1fr}}
.compare-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-1);padding:26px;transition:transform .2s ease,box-shadow .2s ease}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.compare-card h3{font-size:20px;font-weight:700;margin:12px 0 8px}
.compare-card p{font-size:14px;color:var(--ink-2);line-height:1.7}
.compare-card ul{list-style:none;padding:0;margin:16px 0 20px;display:grid;gap:10px}
.compare-card li{font-size:14px;color:var(--ink-2);display:flex;gap:8px;align-items:flex-start}
.dot-teal{width:6px;height:6px;border-radius:999px;background:var(--teal);flex:none;margin-top:9px}

/* ---------- 场景条 ---------- */
.scene-grid{display:grid;gap:18px}
@media(min-width:640px){.scene-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.scene-grid{grid-template-columns:repeat(4,1fr)}}
.scene{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:14px;padding:20px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease}
.scene:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.scene h3{font-size:16px;font-weight:600;margin-bottom:6px}
.scene p{font-size:14px;color:var(--ink-2);line-height:1.7}

/* ---------- 横向节奏线 ---------- */
.flow{display:grid;gap:22px;margin-top:28px;position:relative}
@media(min-width:1024px){.flow{grid-template-columns:repeat(4,1fr);gap:20px}}
.flow::before{content:"";position:absolute;left:0;right:0;top:19px;height:2px;background:var(--line);display:none}
@media(min-width:1024px){.flow::before{display:block}}
.flow-step{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:22px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.flow-node{width:38px;height:38px;border-radius:999px;background:var(--brand);color:#fff;font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center;box-shadow:0 0 0 4px var(--bg);position:relative;z-index:1}
.flow-time{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.06em;margin:14px 0 6px}
.flow-step h3{font-size:16px;font-weight:600;margin-bottom:6px}
.flow-step p{font-size:14px;color:var(--ink-2);line-height:1.7}

/* ---------- 咨询条 ---------- */
.consult-row{display:grid;gap:18px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);padding:26px}
@media(min-width:900px){.consult-row{grid-template-columns:1fr auto;padding:30px 34px}}
.consult-row h2{font-size:20px;font-weight:700;margin-bottom:6px}
.consult-row p{font-size:14px;color:var(--ink-2);line-height:1.7;max-width:720px}

/* ---------- FAQ ---------- */
.faq-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);overflow:hidden;margin-top:22px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:first-child{border-top:0}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);transition:color .18s ease,background-color .18s ease}
.faq-q:hover{color:var(--brand);background:#FAFBFF}
.faq-plus{flex:none;width:16px;height:16px;position:relative;transition:transform .22s ease}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-plus::before{left:0;top:7px;width:16px;height:2px}
.faq-plus::after{top:0;left:7px;width:2px;height:16px}
.faq-item.is-open .faq-plus{transform:rotate(45deg);color:var(--brand)}
.faq-item.is-open .faq-q{color:var(--brand)}
.faq-a{display:none;padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--ink-2)}
.faq-item.is-open .faq-a{display:block}

/* ---------- CTA 条 ---------- */
.cta-bar{margin-top:8px;background:var(--brand);border-radius:var(--r-lg);padding:30px 26px;display:grid;gap:18px;align-items:center;box-shadow:var(--shadow-2)}
@media(min-width:900px){.cta-bar{grid-template-columns:1fr auto;padding:34px 40px}}
.cta-bar h2{color:#fff;font-size:clamp(20px,2.4vw,26px);font-weight:700;margin-bottom:6px}
.cta-bar p{color:rgba(255,255,255,.82);font-size:14px}
.cta-bar .btn{background:#fff;color:var(--brand);box-shadow:none}
.cta-bar .btn:hover{background:#F2F5FF;transform:translateY(-1px);box-shadow:var(--shadow-2)}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:18px;bottom:22px;width:44px;height:44px;border-radius:999px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-2);opacity:0;pointer-events:none;transform:translateY(8px);transition:opacity .2s ease,transform .2s ease;z-index:60}
.to-top.is-show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{background:var(--brand-dark)}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:64px;background:#0B1633;color:#C7D0E0;border-radius:24px 24px 0 0;padding:48px 0 0}
.footer-grid{display:grid;gap:30px;padding-bottom:34px}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}}
.footer-brand p{font-size:14px;line-height:1.8;color:#9FAAC0;margin-top:14px}
.footer-keyword{color:#DCE5FB;font-size:13px;margin-top:14px}
.footer-acc summary{cursor:pointer;list-style:none;font-size:15px;font-weight:600;color:#fff;padding:4px 0 8px}
.footer-acc summary::-webkit-details-marker{display:none}
.footer-acc-body{display:flex;flex-direction:column;gap:10px;padding-top:8px}
.footer-link{font-size:14px;color:#9FAAC0;display:inline-block;transition:color .18s ease,transform .18s ease}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-bar{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;font-size:13px;color:#8B96AC}
.footer-bar a{color:#C7D0E0}
.footer-bar a:hover{color:#fff}

@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
  .card:hover,.scene:hover,.flow-step:hover,.compare-card:hover{transform:none}
}

/* roulang page: category4 */
:root{
  --brand:#1B4DE4;
  --brand-dark:#1438BE;
  --brand-050:#EEF3FF;
  --accent:#FF6A1F;
  --teal:#0FB5A6;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --ink:#0E1626;
  --ink-2:#5B6579;
  --line:#E4E9F2;
  --shadow-1:0 1px 3px rgba(14,22,38,.06);
  --shadow-2:0 6px 18px rgba(20,40,90,.08);
  --shadow-3:0 18px 40px rgba(20,40,90,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:112px}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(27,77,228,.15)}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container-x{padding:0 32px}}

/* ---------- 悬浮胶囊导航 ---------- */
.pill-nav{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  width:min(1240px,calc(100% - 32px));z-index:60;border-radius:999px;
  background:rgba(255,255,255,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.92);box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease-out,border-color .2s ease-out;
}
.pill-nav.is-scrolled{box-shadow:var(--shadow-2);border-color:#DCE6FF}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;height:64px;padding:0 12px 0 16px}
.nav-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--brand);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:15px;font-weight:700;letter-spacing:.01em}
.logo-sub{font-size:11px;color:var(--ink-2);letter-spacing:.16em}
.nav-menu{display:none;align-items:center;gap:2px}
@media(min-width:1024px){.nav-menu{display:flex}}
.nav-link{position:relative;display:inline-block;padding:8px 14px;border-radius:999px;font-size:15px;font-weight:500;color:var(--ink-2);transition:color .18s ease-out,background-color .18s ease-out}
.nav-link:hover{color:var(--brand);background:var(--brand-050)}
.nav-link.is-active{color:var(--brand);background:var(--brand-050)}
.nav-link.is-active::after{content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);width:6px;height:6px;border-radius:50%;background:var(--brand)}
.nav-cta{display:none;gap:10px;align-items:center}
@media(min-width:1024px){.nav-cta{display:flex}}
.nav-burger{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;align-items:center}
.nav-burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
@media(min-width:1024px){.nav-burger{display:none}}
.mobile-panel{
  position:fixed;inset:0;z-index:70;background:#fff;border-radius:24px 24px 0 0;
  transform:translateY(100%);transition:transform .24s ease-out;
  display:flex;flex-direction:column;padding:24px 20px 20px;
}
.mobile-panel.is-open{transform:translateY(0)}
.mobile-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line)}
.mobile-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;font-size:18px;color:var(--ink-2);cursor:pointer}
.mobile-links{flex:1;overflow-y:auto;padding-top:8px}
.mobile-links a{display:block;font-size:18px;line-height:56px;border-bottom:1px solid var(--line);color:var(--ink)}
.mobile-links a.is-active{color:var(--brand);font-weight:600}
.mobile-foot{display:grid;gap:10px;padding-top:16px}

/* ---------- 按钮 / 徽章 / 卡片 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;
  border-radius:12px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C9D6FA}
.btn-ghost:hover{border-color:var(--brand);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-white{background:#fff;color:var(--brand);box-shadow:var(--shadow-2)}
.btn-white:hover{background:#F3F6FF;transform:translateY(-1px);box-shadow:var(--shadow-3)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn[disabled]{background:#C7D0E0;color:#fff;border-color:#C7D0E0;pointer-events:none;box-shadow:none}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.08em;padding:4px 12px;border-radius:999px;font-weight:600}
.badge-brand{background:var(--brand-050);color:var(--brand)}
.badge-accent{background:var(--accent);color:#fff}
.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-1);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:#D6E1FF}
.tag{font-size:12px;letter-spacing:.06em;padding:2px 8px;border-radius:999px;white-space:nowrap}
.tag-teal{background:rgba(15,181,166,.12);color:#0A8C80}
.tag-gray{background:#F1F4F9;color:var(--ink-2)}

/* ---------- 分类页小 Hero ---------- */
.cat-hero{padding:112px 0 12px}
.cat-hero-inner{
  display:grid;gap:24px;align-items:center;background:var(--surface);
  border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-2);
  padding:28px;overflow:hidden;position:relative;
}
@media(min-width:1024px){
  .cat-hero-inner{grid-template-columns:minmax(0,7fr) minmax(0,5fr);padding:36px 40px;min-height:280px}
}
.cat-hero::before{content:none}
.cat-hero-text h1{margin:14px 0 10px;font-size:clamp(28px,4.4vw,42px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
.cat-sub{font-size:16px;color:var(--ink-2);line-height:1.7}
.cat-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:14px;color:var(--ink-2);font-variant-numeric:tabular-nums}
.cat-meta i{display:block;width:1px;height:14px;background:var(--line)}
.cat-hero-media img{width:100%;height:210px;object-fit:cover;border-radius:16px}
@media(min-width:1024px){.cat-hero-media img{height:230px}}
.crumb{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-2);margin:20px 0 14px}
.crumb a:hover{color:var(--brand)}
.crumb .crumb-cur{color:var(--ink);font-weight:600}

/* ---------- 布局 ---------- */
.section{padding:48px 0}
@media(min-width:768px){.section{padding:64px 0}}
.layout-2col{display:grid;gap:28px;grid-template-columns:1fr}
@media(min-width:1024px){.layout-2col{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:32px}}
.block + .block{margin-top:44px}
.block-head{margin-bottom:20px}
.kicker{display:inline-block;font-size:12px;letter-spacing:.12em;color:var(--brand);font-weight:700;margin-bottom:8px}
.block-head h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;line-height:1.32}
.block-desc{margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.7}

/* ---------- 清单卡片 ---------- */
.check-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:768px){.check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.check-item{display:flex;gap:14px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px 20px;box-shadow:var(--shadow-1);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out}
.check-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:#D6E1FF}
.check-num{flex:0 0 auto;width:34px;height:34px;border-radius:10px;background:var(--brand-050);color:var(--brand);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums}
.check-body{min-width:0}
.check-head{display:flex;align-items:center;gap:8px;margin-bottom:4px;flex-wrap:wrap}
.check-head h3{font-size:15px;font-weight:600;line-height:1.45}
.check-body p{font-size:14px;line-height:1.65;color:var(--ink-2)}

/* ---------- 步骤条 ---------- */
.step-list{display:grid;gap:12px}
.step-row{display:flex;gap:14px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:16px 20px;box-shadow:var(--shadow-1);transition:transform .18s ease-out,box-shadow .18s ease-out}
.step-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.step-idx{flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums}
.step-row h3{font-size:15px;font-weight:600;line-height:1.45;margin-bottom:4px}
.step-row p{font-size:14px;line-height:1.65;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;gap:12px;grid-template-columns:1fr}
@media(min-width:900px){.faq-grid{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start}}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-1);overflow:hidden;transition:box-shadow .18s ease-out,border-color .18s ease-out}
.faq-item[open]{box-shadow:var(--shadow-2);border-color:#D6E1FF}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;cursor:pointer;list-style:none;font-size:15px;font-weight:600;line-height:1.5}
.faq-item summary::-webkit-details-marker{display:none}
.faq-plus{position:relative;width:16px;height:16px;flex:0 0 auto;transition:transform .2s ease-out}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-plus::before{left:0;top:7px;width:16px;height:2px}
.faq-plus::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open] .faq-plus{transform:rotate(45deg)}
.faq-body{padding:12px 18px 16px;border-top:1px solid var(--line);font-size:14px;line-height:1.7;color:var(--ink-2)}

/* ---------- 侧栏 ---------- */
.side-sticky{position:sticky;top:104px;display:grid;gap:16px}
.toc-card{padding:20px}
.side-title{font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:10px}
.toc-link{display:block;padding:8px 12px;border-radius:10px;border-left:2px solid transparent;font-size:14px;color:var(--ink-2);transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out}
.toc-link:hover{color:var(--brand);background:var(--brand-050)}
.toc-link.is-current{color:var(--brand);background:var(--brand-050);border-left-color:var(--brand);font-weight:600}
.side-card{padding:20px}
.side-card img{height:120px;width:100%;object-fit:cover;border-radius:16px;margin-bottom:14px}
.side-card p{font-size:14px;line-height:1.7;color:var(--ink-2);margin-bottom:14px}

/* ---------- 咨询入口 + CTA ---------- */
.consult-bar{display:grid;gap:16px;padding:24px 26px;align-items:center}
@media(min-width:768px){.consult-bar{grid-template-columns:minmax(0,1fr) auto}}
.consult-bar h2{font-size:20px;font-weight:700;line-height:1.4;margin-bottom:6px}
.consult-bar p{font-size:14px;color:var(--ink-2)}
.cta-strip-wrap{padding:8px 0 64px}
.cta-strip{display:grid;gap:18px;align-items:center;background:var(--brand);color:#fff;border-radius:24px;padding:28px 26px;box-shadow:var(--shadow-3)}
@media(min-width:768px){.cta-strip{grid-template-columns:minmax(0,1fr) auto;padding:32px 40px}}
.cta-strip h2{font-size:22px;font-weight:700;line-height:1.35}
.cta-strip p{margin-top:8px;font-size:15px;color:rgba(255,255,255,.86)}

/* ---------- 页脚 ---------- */
.site-footer{background:#0B1633;color:#B9C4DA;border-radius:24px 24px 0 0;padding:52px 0 0;margin-top:24px}
.footer-grid{display:grid;gap:28px;grid-template-columns:1fr;padding-bottom:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:32px}}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:12px;color:#9FADC9}
.footer-keyword{margin-top:14px;font-size:13px;color:#7E8DAE}
.footer-acc{border-top:1px solid rgba(255,255,255,.1)}
.footer-acc summary{list-style:none;cursor:pointer;font-size:15px;font-weight:600;color:#fff;padding:14px 0;display:flex;align-items:center;justify-content:space-between}
.footer-acc summary::-webkit-details-marker{display:none}
.footer-acc summary::after{content:"+";color:#7E8DAE;font-weight:400}
.footer-acc[open] summary::after{content:"−"}
.footer-acc-body{display:grid;gap:2px;padding-bottom:14px}
.footer-link{display:inline-block;padding:6px 0;font-size:14px;color:#B9C4DA;transition:color .18s ease-out,transform .18s ease-out}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-bar{border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;display:grid;gap:10px;font-size:13px;color:#7E8DAE}
@media(min-width:768px){.footer-bar{grid-template-columns:auto auto 1fr;align-items:center;gap:20px}}
.footer-bar div{justify-self:start}
@media(min-width:768px){.footer-bar div{justify-self:end}}
.footer-bar a{color:#B9C4DA}
.footer-bar a:hover{color:#fff}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--brand);box-shadow:var(--shadow-2);cursor:pointer;opacity:0;pointer-events:none;transition:opacity .2s ease-out,transform .2s ease-out}
.to-top.is-show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-2px)}

@media (prefers-reduced-motion: reduce){
  *{transition:none!important;animation:none!important}
  .card:hover,.check-item:hover,.step-row:hover{transform:none!important}
}