/* roulang page: index */
:root{
  --ink:#1F3A5F;
  --ink-deep:#16283F;
  --ink-mid:#2A4E7C;
  --ink-soft:#EDF3FA;
  --teal:#2E9E8F;
  --orange:#E2795B;
  --bg:#F5F8FC;
  --bg-alt:#EAF1F9;
  --surface:#FFFFFF;
  --border:#E2EAF4;
  --text:#101B2B;
  --text-body:#435066;
  --text-muted:#7C8A9E;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-1:0 2px 6px rgba(31,58,95,.06);
  --shadow-2:0 14px 34px rgba(31,58,95,.12);
  --section-y:96px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-body);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,border-color .2s ease;}
a:hover{color:var(--teal);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:600;letter-spacing:0;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:30px;line-height:1.35;}
h3{font-size:20px;line-height:1.5;}
h4{font-size:17px;line-height:1.6;}
p{margin:0;}
button,input,select,textarea{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.section{padding:var(--section-y) 0;}
.section-alt{background:var(--bg-alt);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px;}
.section-head h2{position:relative;padding-left:36px;}
.section-head h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:24px;height:3px;background:var(--teal);border-radius:2px;}
.section-head p{max-width:620px;color:var(--text-muted);font-size:15px;margin-top:10px;padding-left:36px;}
.section-head .head-link{font-size:15px;font-weight:600;color:var(--ink);border-bottom:1px solid transparent;padding-bottom:2px;}
.section-head .head-link:hover{color:var(--teal);border-bottom-color:var(--teal);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  text-align:center;
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover,.btn-primary:focus{background:var(--ink-mid);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{background:var(--ink-deep);transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--ink-soft);color:var(--ink);}
.btn-sm{min-height:40px;font-size:14px;padding:0 20px;}
.btn-block{width:100%;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:var(--radius-pill);
  font-size:12px;line-height:1.4;font-weight:600;
  background:rgba(46,158,143,.12);color:#1E6E64;
}
.badge-orange{background:rgba(226,121,91,.14);color:#B24E32;}
.badge-blue{background:rgba(31,58,95,.08);color:var(--ink);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  transition:box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{border-bottom-color:var(--border);box-shadow:0 6px 20px rgba(31,58,95,.08);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;}
.nav-list{display:flex;align-items:center;gap:26px;}
.nav-list a{
  position:relative;font-size:15px;color:var(--ink);font-weight:500;
  padding:6px 0;white-space:nowrap;
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:3px;border-radius:2px;
  background:var(--teal);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-list a:hover{color:var(--teal);}
.nav-list a:hover::after,.nav-list a.is-active::after{transform:scaleX(1);}
.nav-list a.is-active{color:var(--ink);font-weight:600;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:32px;height:32px;flex:0 0 auto;}
.brand-text{font-size:20px;font-weight:600;color:var(--ink);letter-spacing:.01em;white-space:nowrap;}
.nav-right-wrap{display:flex;align-items:center;gap:22px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--border);background:#fff;align-items:center;justify-content:center;
  cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.nav-drawer{
  display:none;position:fixed;inset:0;z-index:200;background:#fff;
  transform:translateY(-100%);transition:transform .3s ease;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:72px;padding:0 20px;border-bottom:1px solid var(--border);}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:var(--radius-btn);
  cursor:pointer;font-size:20px;color:var(--ink);line-height:1;
}
.drawer-list li{border-bottom:1px solid var(--border);}
.drawer-list a{display:flex;align-items:center;height:56px;padding:0 20px;font-size:16px;color:var(--ink);font-weight:500;}
.drawer-list a.is-active{color:var(--ink);font-weight:600;border-left:3px solid var(--teal);padding-left:17px;}
.drawer-cta{padding:20px;}

/* ============ 星图点阵 / 轨道弧线 ============ */
.starfield{position:absolute;inset:0;pointer-events:none;overflow:hidden;}
.starfield::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle,rgba(31,58,95,.22) 1.5px,transparent 1.6px);
  background-size:92px 78px;
}
.orbit{
  position:absolute;width:460px;height:460px;border:1px solid #C9D8EA;border-radius:50%;
  pointer-events:none;
}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:56px 0 0;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 78%);}
.hero .orbit{top:-190px;left:-160px;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;min-height:504px;position:relative;z-index:2;}
.hero-copy .badge{margin-bottom:20px;}
.hero h1{margin-bottom:20px;}
.hero-sub{font-size:18px;line-height:1.7;color:var(--text-body);max-width:520px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:34px;padding-top:26px;border-top:1px solid var(--border);}
.hero-trust li strong{display:block;font-size:26px;font-weight:600;color:var(--ink);line-height:1.2;font-variant-numeric:tabular-nums;}
.hero-trust li span{font-size:13px;color:var(--text-muted);}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:21/9;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-2);}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(255,255,255,.15),rgba(255,255,255,0));
}
.hero-visual figcaption{
  position:absolute;left:16px;bottom:16px;z-index:3;background:rgba(255,255,255,.94);
  border-radius:var(--radius-pill);padding:6px 16px;font-size:13px;color:var(--ink);
}

/* ============ 信任条 ============ */
.trustbar{background:var(--bg-alt);padding:26px 0;margin-top:56px;}
.trustbar ul{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.trustbar li{display:flex;flex-direction:column;gap:2px;}
.trustbar strong{font-size:24px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;}
.trustbar span{font-size:13px;color:var(--text-muted);}

/* ============ 看点网格（竖版封面卡） ============ */
.spot-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.spot-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease;
}
.spot-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.spot-cover{position:relative;aspect-ratio:3/4;overflow:hidden;}
.spot-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.spot-cover .heat{
  position:absolute;top:12px;right:12px;background:rgba(255,255,255,.94);
  border-radius:var(--radius-pill);padding:4px 12px;font-size:12px;font-weight:600;color:var(--ink);
}
.spot-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.spot-body h3{font-size:17px;}
.spot-body p{font-size:14px;color:var(--text-muted);line-height:1.65;}
.meter{height:6px;border-radius:var(--radius-pill);background:var(--ink-soft);overflow:hidden;margin-top:auto;}
.meter i{display:block;height:100%;background:var(--teal);border-radius:var(--radius-pill);}
.meter-label{display:flex;justify-content:space-between;font-size:12px;color:var(--text-muted);margin-top:6px;}

/* ============ 优惠阶梯 ============ */
.ladder{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.ladder-item{position:relative;display:flex;flex-direction:column;}
.ladder-item:nth-child(1){margin-top:0;}
.ladder-item:nth-child(2){margin-top:24px;}
.ladder-item:nth-child(3){margin-top:48px;}
.ladder-item:nth-child(4){margin-top:72px;}
.ladder-item::before{
  content:"";position:absolute;left:-24px;top:34px;width:24px;height:1px;background:var(--teal);opacity:.7;
}
.ladder-item:first-child::before{display:none;}
.ladder-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;display:flex;flex-direction:column;gap:14px;height:100%;
  transition:transform .22s ease,box-shadow .22s ease;
}
.ladder-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.ladder-card .level{font-size:12px;font-weight:600;color:var(--teal);letter-spacing:.08em;}
.ladder-card h3{font-size:20px;}
.ladder-card .audience{font-size:13px;color:var(--text-muted);}
.ladder-card .price{color:var(--ink);font-size:26px;font-weight:600;font-variant-numeric:tabular-nums;line-height:1.2;}
.ladder-card .price small{font-size:13px;font-weight:400;color:var(--text-muted);}
.ladder-card ul{display:flex;flex-direction:column;gap:12px;margin:0;}
.ladder-card ul li{display:flex;gap:10px;font-size:14px;color:var(--text-body);line-height:1.6;}
.ladder-card ul li svg{flex:0 0 20px;margin-top:4px;}
.ladder-card .text-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--border);align-self:flex-start;padding-bottom:2px;}
.ladder-card .text-link:hover{color:var(--teal);border-bottom-color:var(--teal);}

/* ============ 套餐对比 ============ */
.compare-wrap{overflow-x:auto;padding-bottom:12px;scroll-snap-type:x mandatory;}
.compare{display:grid;grid-template-columns:200px repeat(4,minmax(184px,1fr));min-width:960px;}
.compare-cell{padding:14px 18px;font-size:14px;border-bottom:1px solid #EDF3FA;display:flex;align-items:center;gap:8px;}
.compare-head{
  padding:24px 18px;border-bottom:1px solid var(--border);background:#fff;position:relative;
  display:flex;flex-direction:column;gap:8px;
}
.compare-head.feature{
  background:#fff;border:2px solid var(--teal);border-bottom:2px solid var(--teal);
  border-radius:var(--radius-card) var(--radius-card) 0 0;transform:translateY(-8px);
}
.compare-head .tagline-top{
  position:absolute;top:-14px;left:18px;background:var(--teal);color:#fff;
  border-radius:var(--radius-pill);padding:3px 12px;font-size:12px;font-weight:600;
}
.compare-head h3{font-size:18px;}
.compare-head .price{font-size:22px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;}
.compare-head .plan-note{font-size:12px;color:var(--text-muted);}
.compare-rows{display:contents;}
.compare .row-label{font-weight:600;color:var(--ink);background:#F7F9FC;}
.compare .alt{background:#F7F9FC;}
.compare-foot{border-bottom:none;padding-top:20px;}

/* ============ 限时入口 ============ */
.limited{
  background:linear-gradient(135deg,#EDF3FA 0%,#E3EEF7 100%);
  border-radius:var(--radius-card);padding:32px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.countdown{display:flex;gap:12px;}
.count-unit{
  background:#fff;border-radius:var(--radius-btn);padding:10px 16px;text-align:center;min-width:76px;
  box-shadow:var(--shadow-1);
}
.count-unit b{display:block;font-size:26px;font-weight:600;color:var(--orange);font-variant-numeric:tabular-nums;line-height:1.2;}
.count-unit span{font-size:12px;color:var(--text-muted);}
.limited-text{flex:1 1 320px;}
.limited-text h3{font-size:20px;margin-bottom:6px;}
.limited-text p{font-size:14px;color:var(--text-muted);}

/* ============ 表单区 ============ */
.consult-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.consult-info h2{margin-bottom:16px;}
.consult-info > p{color:var(--text-body);margin-bottom:28px;}
.promise-list{display:flex;flex-direction:column;gap:16px;margin-bottom:28px;}
.promise-list li{display:flex;gap:12px;font-size:15px;color:var(--text-body);}
.promise-list li svg{flex:0 0 20px;margin-top:4px;}
.contact-mini{background:#fff;border-radius:var(--radius-card);border:1px solid var(--border);padding:20px;}
.contact-mini dt{font-size:13px;color:var(--text-muted);}
.contact-mini dd{font-size:15px;color:var(--ink);font-weight:600;margin:2px 0 12px;}
.contact-mini dd:last-child{margin-bottom:0;}
.form-card{background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow-1);padding:28px;}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.req{color:var(--orange);margin-left:2px;}
.form-row input[type=text],.form-row input[type=tel],.form-row select,.form-row textarea{
  width:100%;height:48px;border:1px solid #DCE5F0;border-radius:var(--radius-btn);
  padding:0 14px;color:var(--text);background:#fff;transition:border-color .2s ease,box-shadow .2s ease;
}
.form-row textarea{height:120px;padding:12px 14px;line-height:1.6;resize:vertical;}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(31,58,95,.12);
}
.form-row input::placeholder,.form-row textarea::placeholder{color:#A8B4C6;}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--text-muted);margin-bottom:20px;}
.consent input{width:18px;height:18px;margin-top:2px;flex:0 0 18px;accent-color:var(--ink);}
.form-note{font-size:13px;color:var(--text-muted);margin-top:14px;}
.form-alert{
  display:none;border-radius:var(--radius-btn);padding:12px 14px;font-size:14px;margin-bottom:18px;
  background:#F7F9FC;border-left:4px solid var(--teal);color:var(--ink);
}
.form-alert.is-error{background:#FDF4F1;border-left-color:var(--orange);color:#B24E32;}

/* ============ 最新信息（CMS） ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);overflow:hidden;transition:transform .22s ease,box-shadow .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);color:var(--text-body);}
.news-cover{aspect-ratio:16/9;overflow:hidden;background:var(--ink-soft);}
.news-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{font-size:14px;color:var(--text-muted);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-muted);margin-top:auto;padding-top:8px;}
.news-meta .dot{width:1px;height:12px;background:var(--border);}
.empty-state{
  text-align:center;padding:56px 24px;background:#fff;border:1px dashed var(--border);border-radius:var(--radius-card);
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-state p{font-size:15px;color:var(--text-muted);}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:0 24px;transition:border-color .2s ease;}
.faq-item[open]{border-left:3px solid var(--teal);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";flex:0 0 12px;width:12px;height:12px;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);
  transform:rotate(45deg);transition:transform .22s ease;margin-right:4px;
}
.faq-item[open] summary::after{transform:rotate(-135deg);}
.faq-item .faq-body{padding:0 0 22px;font-size:15px;color:var(--text-body);line-height:1.75;max-width:760px;}

/* ============ CTA 条 ============ */
.cta-band{background:var(--ink);color:#fff;padding:48px 0;position:relative;overflow:hidden;}
.cta-band .container{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;position:relative;z-index:2;}
.cta-band h2{color:#fff;font-size:24px;}
.cta-band p{color:#C7D3E3;font-size:15px;margin-top:8px;}
.cta-band .btn-primary{background:#fff;color:var(--ink);}
.cta-band .btn-primary:hover{background:var(--ink-soft);color:var(--ink);}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-deep);color:#C7D3E3;padding:64px 0 0;position:relative;overflow:hidden;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;position:relative;z-index:2;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;font-size:19px;}
.footer-grid p{font-size:14px;color:#9FB0C6;line-height:1.7;}
.footer-grid h3{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{color:#C7D3E3;font-size:14px;}
.footer-links a:hover{color:var(--teal);}
.footer-contact dd{margin:0 0 12px;font-size:14px;color:#C7D3E3;}
.footer-contact dt{font-size:12px;color:#8C9CB4;margin-bottom:2px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:#8C9CB4;position:relative;z-index:2;
}
.footer-bottom a{color:#8C9CB4;}
.footer-bottom a:hover{color:var(--teal);}
.footer-stars{position:absolute;inset:0 0 auto 0;height:80px;pointer-events:none;
  background-image:radial-gradient(circle,rgba(255,255,255,.55) 1.5px,transparent 1.6px);
  background-size:120px 40px;opacity:.22;}

/* ============ 栅格间距辅助 ============ */
.row-gap{margin-left:-12px;margin-right:-12px;}
.row-gap > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-trust{gap:26px;}
  .compare{grid-template-columns:170px repeat(4,minmax(170px,1fr));}
}
@media (max-width:991px){
  :root{--section-y:72px;}
  h1{font-size:32px;}
  h2{font-size:25px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;min-height:0;padding-bottom:8px;}
  .hero-visual{order:2;}
  .hero-visual img{aspect-ratio:16/9;}
  .trustbar ul{grid-template-columns:repeat(2,1fr);gap:18px;}
  .spot-grid{grid-template-columns:repeat(2,1fr);}
  .ladder{grid-template-columns:repeat(2,1fr);}
  .ladder-item:nth-child(1),.ladder-item:nth-child(2),.ladder-item:nth-child(3),.ladder-item:nth-child(4){margin-top:0;}
  .ladder-item::before{display:none;}
  .consult-grid{grid-template-columns:1fr;gap:32px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--section-y:56px;}
  .container{padding:0 16px;}
  .nav-left,.nav-right-wrap{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{justify-content:space-between;position:relative;}
  .brand{position:absolute;left:50%;transform:translateX(-50%);}
  .nav-drawer{display:block;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  .hero{padding-top:32px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .hero-trust{gap:20px;padding-top:20px;}
  .hero-trust li strong{font-size:22px;}
  .spot-grid{grid-template-columns:1fr 1fr;gap:16px;}
  .ladder{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .limited{padding:24px;flex-direction:column;align-items:flex-start;}
  .limited .btn{width:100%;}
  .countdown{width:100%;}
  .count-unit{flex:1;min-width:0;}
  .section-head h2{padding-left:30px;}
  .section-head h2::before{width:20px;}
  .section-head p{padding-left:30px;}
  .form-card{padding:20px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band .btn{width:100%;}
  .faq-item{padding:0 18px;}
  .compare{grid-template-columns:150px repeat(4,minmax(160px,1fr));}
}
@media (max-width:480px){
  body{font-size:15px;}
  .brand-text{font-size:18px;}
  .hero-trust{flex-direction:column;gap:14px;}
  .spot-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
}

/* roulang page: article */
:root{
  --c-primary:#1F3A5F;
  --c-primary-dark:#16283F;
  --c-primary-mid:#2A4E7C;
  --c-primary-soft:#EDF3FA;
  --c-accent:#2E9E8F;
  --c-accent-soft:rgba(46,158,143,.10);
  --c-warm:#E2795B;
  --c-warm-soft:rgba(226,121,91,.12);
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-alt:#EAF1F9;
  --c-border:#E2EAF4;
  --c-line:#EDF3FA;
  --c-text:#101B2B;
  --c-body:#435066;
  --c-muted:#7C8A9E;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh-1:0 2px 6px rgba(31,58,95,.06);
  --sh-2:0 14px 34px rgba(31,58,95,.12);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:600;line-height:1.35;}
p{margin:0;}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-accent);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:#182F4E;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{background:var(--c-primary-dark);transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--c-primary);border-color:#fff;}
.btn-light:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1.6;
  background:var(--c-accent-soft);color:#1D6B60;
}
.badge-warm{background:var(--c-warm-soft);color:#B4472B;}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--c-alt);color:var(--c-primary-mid);
  font-size:13px;line-height:1.5;transition:background-color .2s ease,color .2s ease;
}
a.tag:hover{background:var(--c-primary);color:#fff;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(8px);
  transition:box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{border-bottom:1px solid var(--c-border);box-shadow:0 4px 18px rgba(31,58,95,.07);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;}
.nav-left,.nav-right-wrap{display:flex;align-items:center;gap:18px;flex:1;}
.nav-right-wrap{justify-content:flex-end;}
.nav-list{display:flex;align-items:center;gap:26px;}
.nav-list a{
  position:relative;display:inline-block;
  font-size:15px;color:var(--c-primary);line-height:72px;
  transition:color .2s ease;
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:18px;height:3px;
  background:var(--c-accent);border-radius:2px;
  transform:scaleX(0);transform-origin:center;transition:transform .22s ease;
}
.nav-list a:hover{color:var(--c-primary-mid);}
.nav-list a:hover::after{transform:scaleX(1);}
.nav-list a.is-active{font-weight:600;color:var(--c-primary);}
.nav-list a.is-active::after{transform:scaleX(1);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-text);}
.brand:hover{color:var(--c-primary);}
.brand-mark{width:36px;height:36px;flex:0 0 36px;}
.brand-text{font-size:20px;font-weight:600;letter-spacing:.01em;color:var(--c-text);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-border);
  border-radius:var(--r-btn);background:#fff;position:relative;cursor:pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--c-primary);
  border-radius:2px;transform:translateX(-50%);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;background:#fff;
  transform:translateY(-100%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:16px 20px 24px;
  visibility:hidden;
}
.mobile-drawer.is-open{transform:translateY(0);visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--c-border);background:#fff;
  border-radius:var(--r-btn);cursor:pointer;color:var(--c-primary);font-size:20px;line-height:1;
}
.drawer-nav{margin-top:8px;flex:1;overflow-y:auto;}
.drawer-nav a{
  display:flex;align-items:center;height:56px;
  font-size:16px;color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a:hover{color:var(--c-accent);}
.drawer-nav a.is-active{color:var(--c-primary);font-weight:600;}
.drawer-foot{margin-top:16px;}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{background:#F7F9FC;border-bottom:1px solid var(--c-line);}
.breadcrumb-inner{display:flex;align-items:center;height:52px;gap:8px;font-size:13px;color:var(--c-muted);overflow:hidden;}
.breadcrumb-inner a{color:var(--c-muted);}
.breadcrumb-inner a:hover{color:var(--c-accent);}
.breadcrumb-sep{color:#C3D0E0;}
.breadcrumb-current{color:var(--c-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60%;}

/* ---------- 文章页主体 ---------- */
.article-wrap{padding:40px 0 0;}
.article-grid{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px;align-items:start;}
.article-main{min-width:0;}
.article-head{background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1);}
.article-head h1{font-size:32px;line-height:1.35;font-weight:600;margin:16px 0 0;}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;font-size:13px;color:var(--c-muted);
}
.article-meta .meta-sep{color:#CDD9E6;}
.article-cover{margin-top:24px;}
.article-cover img{width:100%;aspect-ratio:21/9;object-fit:cover;border-radius:var(--r-img);}
.article-cover figcaption{margin-top:10px;font-size:13px;color:var(--c-muted);text-align:center;}

.article-body{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:36px 32px;margin-top:24px;box-shadow:var(--sh-1);
}
.prose{max-width:780px;font-size:16px;line-height:1.75;color:var(--c-body);}
.prose > *:first-child{margin-top:0;}
.prose p{margin:0 0 20px;}
.prose h2{
  position:relative;font-size:24px;line-height:1.4;font-weight:600;color:var(--c-text);
  margin:40px 0 16px;padding-left:16px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  background:var(--c-accent);border-radius:2px;
}
.prose h3{font-size:20px;font-weight:600;color:var(--c-text);margin:28px 0 12px;}
.prose h4{font-size:17px;font-weight:600;color:var(--c-text);margin:22px 0 10px;}
.prose ul,.prose ol{margin:0 0 20px;padding-left:0;}
.prose ul li,.prose ol li{position:relative;padding-left:22px;margin-bottom:12px;line-height:1.7;}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;
  border-radius:50%;background:var(--c-accent);
}
.prose ol{counter-reset:proseol;}
.prose ol li{counter-increment:proseol;padding-left:30px;}
.prose ol li::before{
  content:counter(proseol);position:absolute;left:0;top:2px;
  width:20px;height:20px;border-radius:50%;background:var(--c-primary-soft);
  color:var(--c-primary);font-size:12px;font-weight:600;line-height:20px;text-align:center;
}
.prose blockquote{
  margin:0 0 20px;padding:16px 20px;background:#F7F9FC;
  border-left:4px solid var(--c-accent);border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--c-primary-mid);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{margin:20px 0;border-radius:var(--r-img);}
.prose figure{margin:24px 0;}
.prose figcaption{margin-top:8px;font-size:13px;color:var(--c-muted);text-align:center;}
.prose a{color:var(--c-primary);border-bottom:1px solid rgba(46,158,143,.5);}
.prose a:hover{color:var(--c-accent);}
.prose strong{color:var(--c-text);}
.prose .table-scroll,
.prose table{width:100%;}
.prose .table-scroll{overflow-x:auto;margin:0 0 20px;border:1px solid var(--c-border);border-radius:var(--r-img);}
.prose table{border-collapse:collapse;min-width:520px;font-size:14px;}
.prose thead th{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;text-align:left;}
.prose th,.prose td{padding:12px 16px;border-bottom:1px solid var(--c-line);}
.prose tbody tr:last-child td{border-bottom:none;}

.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:56px 20px;gap:16px;
}
.empty-state svg{width:44px;height:44px;color:var(--c-accent);}
.empty-state p{font-size:15px;color:var(--c-muted);}

/* 侧栏 */
.article-side{display:flex;flex-direction:column;gap:24px;position:sticky;top:96px;}
.side-cta{
  background:var(--c-primary);color:#fff;border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--sh-1);
}
.side-cta h3{color:#fff;font-size:19px;margin-bottom:10px;}
.side-cta p{color:#C7D3E3;font-size:14px;line-height:1.7;margin-bottom:20px;}
.side-cta .btn{margin-top:4px;}
.side-card{background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);}
.side-card h3{font-size:17px;margin-bottom:16px;}
.side-list li + li{margin-top:10px;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 14px;border-radius:var(--r-btn);
  background:#F7F9FC;color:var(--c-primary);font-size:14px;
  transition:background-color .2s ease,color .2s ease,transform .2s ease;
}
.side-list a:hover{background:var(--c-primary-soft);color:var(--c-primary-mid);transform:translateX(2px);}
.side-list a.is-current{background:var(--c-primary);color:#fff;font-weight:600;}
.side-list a .arrow{font-size:13px;opacity:.7;}

/* 标签 / 上下篇 / 推荐 */
.article-foot{margin-top:32px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-row .tag-label{font-size:13px;color:var(--c-muted);margin-right:4px;}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:24px;}
.pager-card{
  display:block;background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.pager-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D3E0EF;color:var(--c-primary);}
.pager-card span{display:block;font-size:13px;color:var(--c-muted);margin-bottom:6px;}
.pager-card strong{display:block;font-size:16px;font-weight:600;color:var(--c-text);line-height:1.6;}
.pager-card.is-next{text-align:right;}

.related{margin-top:56px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;}
.section-title{position:relative;padding-left:18px;font-size:26px;line-height:1.4;}
.section-title::before{
  content:"";position:absolute;left:0;top:12px;width:24px;height:3px;
  background:var(--c-accent);border-radius:2px;
}
.section-sub{font-size:14px;color:var(--c-muted);margin-top:6px;padding-left:18px;}
.link-more{font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{color:var(--c-accent);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.info-card{
  display:flex;flex-direction:column;background:var(--c-card);
  border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D3E0EF;}
.info-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-alt);}
.info-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.info-card .thumb .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.92);color:#1D6B60;}
.info-card .card-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.info-card h3{
  font-size:17px;line-height:1.55;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card p{
  margin-top:10px;font-size:14px;line-height:1.7;color:var(--c-body);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card .card-meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--c-muted);
}
.info-card:hover h3{color:var(--c-primary);}

/* 底部 CTA 条 */
.cta-bar{margin-top:64px;background:var(--c-primary);border-radius:var(--r-card);overflow:hidden;position:relative;}
.cta-bar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:32px 36px;
}
.cta-bar p{color:#fff;font-size:18px;font-weight:600;line-height:1.6;}
.cta-bar .cta-note{display:block;color:#C7D3E3;font-size:13.5px;font-weight:400;margin-top:6px;}
.cta-dots{position:absolute;right:28px;top:18px;width:120px;height:50px;opacity:.22;pointer-events:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;margin-top:96px;background:var(--c-primary-dark);color:#C7D3E3;
  padding:64px 0 28px;overflow:hidden;
}
.footer-stars{
  position:absolute;top:0;left:0;right:0;height:60px;opacity:.22;
  background-image:radial-gradient(circle,rgba(255,255,255,.9) 1.5px,transparent 1.6px);
  background-size:60px 30px;background-position:10px 12px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;position:relative;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text{color:#fff;}
.site-footer h3{color:#fff;font-size:16px;margin-bottom:16px;font-weight:600;}
.site-footer p{font-size:14px;line-height:1.7;color:#C7D3E3;}
.footer-links li + li{margin-top:10px;}
.footer-links a{font-size:14px;color:#C7D3E3;}
.footer-links a:hover{color:var(--c-accent);}
.footer-contact{margin:0;font-size:14px;}
.footer-contact dt{color:#8FA3BE;font-size:12.5px;margin-top:12px;}
.footer-contact dt:first-child{margin-top:0;}
.footer-contact dd{margin:2px 0 0;color:#C7D3E3;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FA3BE;position:relative;
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .container{padding:0 20px;}
  .nav-list{gap:18px;}
  .nav-list a{font-size:14px;}
  .article-grid{grid-template-columns:minmax(0,1fr) 340px;gap:28px;}
}
@media screen and (max-width:991px){
  .nav-left,.nav-right-wrap{display:none;}
  .nav-toggle{display:block;}
  .header-inner{justify-content:space-between;}
  .brand{position:absolute;left:50%;transform:translateX(-50%);}
  .site-header .container{position:relative;display:flex;align-items:center;height:72px;}
  .article-grid{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap;}
  .article-side > *{flex:1 1 300px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .article-head,.article-body{padding:26px 22px;}
}
@media screen and (max-width:767px){
  body{font-size:15.5px;}
  .article-wrap{padding-top:24px;}
  .article-head h1{font-size:24px;margin-top:12px;}
  .prose h2{font-size:20px;margin-top:32px;}
  .prose h3{font-size:18px;}
  .pager{grid-template-columns:minmax(0,1fr);}
  .pager-card.is-next{text-align:left;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .cta-bar-inner{flex-direction:column;align-items:flex-start;padding:26px 22px;}
  .cta-bar .btn{width:100%;}
  .section-title{font-size:22px;}
  .site-footer{margin-top:64px;padding-top:48px;}
  .breadcrumb-current{max-width:48%;}
}
@media screen and (max-width:520px){
  .container{padding:0 16px;}
  .article-side{flex-direction:column;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .btn{width:100%;}
  .btn.btn-sm{width:auto;}
}

/* roulang page: category1 */
:root{
  --ink:#1F3A5F;
  --ink-deep:#16283F;
  --ink-mid:#2A4E7C;
  --ink-soft:#EDF3FA;
  --teal:#2E9E8F;
  --sand:#E2795B;
  --bg:#F5F8FC;
  --bg-alt:#EAF1F9;
  --card:#FFFFFF;
  --border:#E2EAF4;
  --t1:#101B2B;
  --t2:#435066;
  --t3:#7C8A9E;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 2px 6px rgba(31,58,95,.06);
  --sh-2:0 14px 34px rgba(31,58,95,.12);
  --sec:96px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--t2);
  background:var(--bg);
  overflow-x:hidden;
}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,border-color .2s ease;}
a:hover{color:var(--teal);}
img{max-width:100%;display:block;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:600;letter-spacing:.01em;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:30px;line-height:1.35;}
h3{font-size:20px;line-height:1.5;}
h4{font-size:17px;line-height:1.6;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sec) 0;}
.section-alt{background:var(--bg-alt);}
.section-white{background:#fff;}
.num{font-variant-numeric:tabular-nums;letter-spacing:.01em;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(8px);
  transition:box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{border-bottom:1px solid var(--border);box-shadow:0 6px 18px rgba(31,58,95,.07);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:72px;gap:16px;position:relative;
}
.nav-left,.nav-right-wrap{flex:1 1 0;min-width:0;}
.nav-right-wrap{display:flex;align-items:center;justify-content:flex-end;gap:18px;}
.nav-list{display:flex;align-items:center;gap:26px;flex-wrap:wrap;}
.nav-list a{
  position:relative;display:inline-flex;align-items:center;
  font-size:15px;color:var(--ink);padding:6px 0;line-height:1.4;
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:3px;
  background:transparent;border-radius:2px;transition:background .2s ease;
}
.nav-list a:hover{color:var(--teal);}
.nav-list a.is-active{color:var(--ink);font-weight:600;}
.nav-list a.is-active::after{background:var(--teal);}
.brand{
  display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;
  padding:6px 10px;border-radius:var(--r-btn);
}
.brand-mark{width:34px;height:34px;flex:0 0 34px;}
.brand-text{font-size:19px;font-weight:600;color:var(--ink);letter-spacing:.02em;white-space:nowrap;}
.brand:hover .brand-text{color:var(--ink-mid);}
.nav-toggle{
  display:none;width:46px;height:46px;border:1px solid var(--border);border-radius:var(--r-btn);
  background:#fff;cursor:pointer;position:relative;align-items:center;justify-content:center;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";display:block;width:20px;height:1.8px;background:var(--ink);border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span::before{transform:translateY(-6px);}
.nav-toggle span::after{transform:translateY(4.2px);}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:rotate(45deg) translateY(0);}
body.nav-open .nav-toggle span::after{transform:rotate(-45deg) translateY(-1.8px);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:all .2s ease;text-align:center;
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--ink-mid);color:#fff;transform:translateY(-1px);}
.btn-primary:active{background:var(--ink-deep);transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink-soft);color:var(--ink);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:var(--ink-soft);color:var(--ink);transform:translateY(-1px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:8px;}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--teal);outline-offset:2px;}

/* ---------- badges / titles ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;line-height:1.6;
  background:rgba(46,158,143,.12);color:#1F6F65;font-weight:600;
}
.badge-sand{background:rgba(226,121,91,.14);color:#B4502F;}
.badge-ink{background:var(--ink-soft);color:var(--ink);}
.section-head{margin-bottom:44px;max-width:820px;}
.section-head h2{position:relative;padding-left:38px;margin-bottom:14px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:24px;height:3px;border-radius:2px;background:var(--teal);
}
.section-head p{color:var(--t2);font-size:16px;}
.eyebrow{font-size:13px;color:var(--teal);font-weight:600;letter-spacing:.08em;margin-bottom:10px;display:block;}

/* ---------- banner ---------- */
.page-banner{
  position:relative;
  min-height:280px;
  display:flex;align-items:center;
  background-image:linear-gradient(180deg,rgba(255,255,255,.90),rgba(237,243,250,.95)),url("/assets/images/backpic/back-1.webp");
  background-size:cover,cover;
  background-position:center,center;
  overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;right:-60px;top:-80px;width:320px;height:320px;
  border:1px solid #C9D8EA;border-radius:50%;opacity:.7;
}
.banner-inner{position:relative;z-index:2;padding:48px 24px;max-width:1200px;margin:0 auto;width:100%;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--t3);margin-bottom:18px;
}
.breadcrumb a{color:var(--t3);}
.breadcrumb a:hover{color:var(--teal);}
.breadcrumb .sep{color:#B7C4D6;}
.page-banner h1{margin-bottom:14px;max-width:760px;}
.page-banner .banner-sub{font-size:17px;color:var(--t2);max-width:640px;}
.banner-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;}
.banner-gap{height:24px;}

/* ---------- 图文交错 ---------- */
.split-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.split-row + .split-row{margin-top:72px;}
.split-media{border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1);aspect-ratio:16/10;background:var(--bg-alt);}
.split-media img{width:100%;height:100%;object-fit:cover;}
.split-row.reverse .split-media{order:2;}
.split-text h3{margin-bottom:14px;}
.split-list{margin-top:20px;display:grid;gap:12px;}
.split-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;line-height:1.65;}
.split-list .tick{flex:0 0 20px;width:20px;height:20px;margin-top:3px;}

/* ---------- 数据条 ---------- */
.data-strip{background:var(--bg-alt);padding:56px 0;}
.data-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;text-align:left;}
.data-item{display:flex;align-items:baseline;gap:14px;padding:8px 0;}
.data-item strong{font-size:34px;color:var(--ink);font-weight:600;line-height:1.1;font-variant-numeric:tabular-nums;}
.data-item span{font-size:14px;color:var(--t2);}

/* ---------- 看点网格 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;transition:transform .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.card-media{aspect-ratio:4/3;overflow:hidden;background:var(--bg-alt);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18px;}
.card-body p{font-size:14px;color:var(--t2);margin:0;}
.card-foot{margin-top:auto;font-size:13px;color:var(--t3);display:flex;justify-content:space-between;align-items:center;}
.text-link{color:var(--ink);font-weight:600;font-size:14px;border-bottom:1px solid transparent;}
.text-link:hover{color:var(--teal);border-bottom-color:var(--teal);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-left:3px solid transparent;
  border-radius:12px;margin-bottom:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-left-color:var(--teal);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;padding:20px 22px;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--t1);line-height:1.5;min-height:44px;
}
.faq-q:hover{color:var(--ink-mid);}
.faq-sign{position:relative;flex:0 0 18px;width:18px;height:18px;}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;transition:transform .22s ease,opacity .22s ease;
}
.faq-sign::before{left:0;top:8px;width:18px;height:1.8px;}
.faq-sign::after{left:8px;top:0;width:1.8px;height:18px;}
.faq-item.is-open .faq-sign::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 22px 22px;font-size:15px;color:var(--t2);}
.faq-a-inner p{margin-bottom:12px;}
.faq-a-inner p:last-child{margin-bottom:0;}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--ink);color:#fff;position:relative;overflow:hidden;}
.cta-band::after{
  content:"";position:absolute;left:-80px;bottom:-140px;width:300px;height:300px;
  border:1px solid rgba(201,216,234,.35);border-radius:50%;
}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:28px;padding:56px 0;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:26px;margin-bottom:8px;}
.cta-inner p{color:#C7D3E3;margin:0;font-size:15px;}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--ink-deep);color:#C7D3E3;padding-top:64px;overflow:hidden;}
.footer-stars{
  position:absolute;left:0;right:0;top:0;height:64px;pointer-events:none;
  background-image:
    radial-gradient(1.5px 1.5px at 6% 40%,rgba(255,255,255,.34),transparent 60%),
    radial-gradient(1.5px 1.5px at 17% 70%,rgba(255,255,255,.22),transparent 60%),
    radial-gradient(1.5px 1.5px at 29% 30%,rgba(255,255,255,.28),transparent 60%),
    radial-gradient(1.5px 1.5px at 41% 62%,rgba(255,255,255,.2),transparent 60%),
    radial-gradient(1.5px 1.5px at 55% 35%,rgba(255,255,255,.3),transparent 60%),
    radial-gradient(1.5px 1.5px at 67% 70%,rgba(255,255,255,.2),transparent 60%),
    radial-gradient(1.5px 1.5px at 78% 42%,rgba(255,255,255,.26),transparent 60%),
    radial-gradient(1.5px 1.5px at 90% 64%,rgba(255,255,255,.22),transparent 60%);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text{color:#fff;font-size:18px;}
.footer-grid p{font-size:14px;color:#A9B8CD;margin:0;max-width:280px;}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:#C7D3E3;font-size:14px;}
.footer-links a:hover{color:var(--teal);}
.footer-contact{margin:0;font-size:14px;}
.footer-contact dt{color:#8FA2BC;font-size:13px;margin-top:10px;}
.footer-contact dt:first-child{margin-top:0;}
.footer-contact dd{margin:2px 0 0;color:#D6E0EE;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#8FA2BC;
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .split-row{gap:40px;}
}
@media (max-width:991px){
  :root{--sec:72px;}
  h1{font-size:32px;}
  h2{font-size:24px;}
  .header-inner{flex-wrap:wrap;min-height:64px;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .brand{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);}
  .nav-left,.nav-right-wrap{display:none;flex:0 0 100%;width:100%;}
  body.nav-open .nav-left,body.nav-open .nav-right-wrap{display:block;}
  body.nav-open .site-header{box-shadow:0 18px 40px rgba(31,58,95,.14);border-bottom:1px solid var(--border);}
  .nav-left{margin-top:8px;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-list li{border-bottom:1px solid var(--border);}
  .nav-list a{display:block;padding:0 8px;line-height:56px;font-size:16px;}
  .nav-list a::after{display:none;}
  .nav-list a.is-active{color:var(--ink);}
  .nav-right-wrap{display:none;flex-direction:column;align-items:stretch;gap:0;}
  body.nav-open .nav-right-wrap{display:flex;}
  .nav-right-wrap .btn{margin:18px 8px 24px;width:calc(100% - 16px);}
  .split-row{grid-template-columns:1fr;gap:28px;}
  .split-row.reverse .split-media{order:0;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .data-grid{grid-template-columns:1fr;gap:8px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .page-banner::after{display:none;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  .container{padding:0 16px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .page-banner{min-height:200px;}
  .banner-inner{padding:36px 16px;}
  .page-banner .banner-sub{font-size:15px;}
  .grid-4{grid-template-columns:1fr;}
  .data-item strong{font-size:28px;}
  .cta-inner{padding:44px 0;}
  .cta-inner h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .section-head{margin-bottom:32px;}
  .section-head h2{padding-left:32px;}
}
@media (max-width:480px){
  .btn{width:100%;}
  .banner-actions{gap:10px;}
  .nav-right-wrap .btn{width:calc(100% - 16px);}
  .faq-q{font-size:16px;padding:18px 16px;}
  .faq-a-inner{padding:0 16px 18px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#1F3A5F;
  --c-primary-dark:#16283F;
  --c-primary-mid:#2A4E7C;
  --c-primary-soft:#EDF3FA;
  --c-accent:#2E9E8F;
  --c-accent-soft:rgba(46,158,143,.12);
  --c-warm:#E2795B;
  --c-warm-soft:rgba(226,121,91,.12);
  --c-bg:#F5F8FC;
  --c-bg-alt:#EAF1F9;
  --c-bg-soft:#F7F9FC;
  --c-card:#FFFFFF;
  --c-border:#E2EAF4;
  --c-border-soft:#EDF3FA;
  --c-text:#101B2B;
  --c-body:#435066;
  --c-muted:#7C8A9E;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(31,58,95,.06);
  --sh-2:0 14px 34px rgba(31,58,95,.12);
  --section-space:96px;
  --font-stack:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-stack);
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:600;letter-spacing:.01em}
h1{font-size:40px;line-height:1.25}
h2{font-size:30px;line-height:1.35}
h3{font-size:20px;line-height:1.5}
h4{font-size:17px;line-height:1.6}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-accent)}
img{max-width:100%;display:block;height:auto}
figure{margin:0}
ol,ul{margin:0;padding:0}
li{list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
::selection{background:var(--c-primary-soft);color:var(--c-primary)}

.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.section{padding:var(--section-space) 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{position:relative;padding-left:34px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.55em;width:24px;height:3px;border-radius:2px;background:var(--c-accent);
}
.h2-line{position:relative;padding-left:34px}
.h2-line::before{
  content:"";position:absolute;left:0;top:.55em;width:24px;height:3px;border-radius:2px;background:var(--c-accent);
}
.section-head p{margin-top:14px;color:var(--c-body);font-size:17px;line-height:1.7}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-border);box-shadow:0 6px 20px rgba(31,58,95,.07)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px}
.nav-left{flex:1 1 0;min-width:0}
.nav-right-wrap{flex:1 1 0;min-width:0;display:flex;align-items:center;justify-content:flex-end;gap:18px}
.nav-list{display:flex;align-items:center;gap:26px;margin:0;padding:0}
.nav-list li{list-style:none}
.nav-list a{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:0 2px;font-size:15px;font-weight:500;color:var(--c-primary);white-space:nowrap;
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:12px;height:3px;border-radius:2px;
  background:var(--c-accent);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-list a:hover{color:var(--c-accent)}
.nav-list a:hover::after{transform:scaleX(1)}
.nav-list a.is-active{color:var(--c-primary);font-weight:600}
.nav-list a.is-active::after{transform:scaleX(1)}

.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-primary);flex:none}
.brand:hover{color:var(--c-primary)}
.brand-mark{width:34px;height:34px;flex:none}
.brand-text{font-size:20px;font-weight:600;letter-spacing:.01em;white-space:nowrap}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:16px;font-weight:600;line-height:1;
  text-align:center;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:#19304F;color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:var(--c-primary-dark);transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.btn-on-dark{background:#fff;color:var(--c-primary);border-color:#fff}
.btn-on-dark:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--c-border);border-radius:var(--r-btn);position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";display:block;width:18px;height:1.5px;background:var(--c-primary);border-radius:2px;
  transition:transform .2s ease;
}
.nav-toggle span::before{transform:translateY(-6px)}
.nav-toggle span::after{transform:translateY(4.5px)}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;top:0;left:0;right:0;z-index:80;background:#fff;
  transform:translateY(-104%);transition:transform .3s ease;
  box-shadow:0 18px 40px rgba(31,58,95,.16);
  max-height:100vh;overflow-y:auto;padding:16px 0 28px;
}
.nav-drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--c-border)}
.drawer-close{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--c-border);border-radius:var(--r-btn);
}
.drawer-list{margin:8px 0 20px}
.drawer-list li{border-bottom:1px solid var(--c-border-soft)}
.drawer-list a{
  display:flex;align-items:center;min-height:56px;font-size:16px;color:var(--c-primary);font-weight:500;
}
.drawer-list a.is-active{color:var(--c-accent);font-weight:600}

/* Banner */
.page-hero{
  position:relative;overflow:hidden;isolation:isolate;
  min-height:280px;display:flex;align-items:center;
  padding:44px 0 40px;background:var(--c-bg-alt);
}
.page-hero-bg{
  position:absolute;inset:0;z-index:-2;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
}
.page-hero-veil{
  position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(255,255,255,.95) 0%,rgba(237,243,250,.9) 60%,rgba(245,248,252,.96) 100%);
}
.page-hero .container{position:relative}
.breadcrumb{margin-bottom:18px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted)}
.breadcrumb li::after{content:"/";margin-left:8px;color:#B9C7D9}
.breadcrumb li:last-child::after{content:"";margin:0}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-accent)}
.breadcrumb li[aria-current]{color:var(--c-primary);font-weight:600}
.page-hero h1{max-width:820px}
.page-hero-sub{margin-top:16px;max-width:700px;font-size:18px;line-height:1.7;color:var(--c-body)}

/* 数据条 */
.stats-strip{background:var(--c-bg-alt);padding:36px 0}
.stats-row{row-gap:20px}
.stat-item{
  border-left:2px solid rgba(46,158,143,.4);
  padding-left:18px;
}
.stat-num{font-size:28px;font-weight:600;color:var(--c-primary);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-num span{font-size:15px;font-weight:500;margin-left:3px}
.stat-label{margin-top:6px;font-size:14px;color:var(--c-muted)}

/* 时间轴 */
.timeline-section{background:#fff}
.timeline{position:relative;max-width:900px;margin:0 auto;padding-left:0}
.timeline::before{
  content:"";position:absolute;left:19px;top:12px;bottom:34px;width:1px;background:var(--c-accent);opacity:.55;
}
.tl-item{position:relative;display:grid;grid-template-columns:40px 1fr;gap:22px;padding-bottom:28px}
.tl-item:last-child{padding-bottom:0}
.tl-marker{
  position:relative;z-index:1;width:40px;height:40px;border-radius:50%;
  background:var(--c-primary);color:#fff;font-size:14px;font-weight:600;
  display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
  box-shadow:0 4px 12px rgba(31,58,95,.18);
}
.tl-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:24px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D7E3F1}
.tl-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:12px}
.tl-card p{color:var(--c-body)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1.6;white-space:nowrap;
}
.badge-teal{background:var(--c-accent-soft);color:#1F6F66}
.badge-blue{background:var(--c-primary-soft);color:var(--c-primary-mid)}
.badge-warm{background:var(--c-warm-soft);color:#A9503A}

.chip-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-pill);
  background:var(--c-bg-soft);border:1px solid var(--c-border);
  font-size:13px;color:var(--c-body);
}
.chip svg{width:14px;height:14px;flex:none;color:var(--c-accent)}

/* 图文分栏 */
.feature-split{background:var(--c-bg)}
.feature-media{position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1)}
.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img)}
.feature-media figcaption{margin-top:12px;font-size:13px;color:var(--c-muted);text-align:center}
.feature-copy h2{margin-bottom:18px}
.feature-copy > p{margin-bottom:22px}

.check-list{display:grid;gap:14px;margin-top:6px}
.check-list li{display:grid;grid-template-columns:20px 1fr;gap:12px;align-items:start;line-height:1.65}
.check-list svg{width:20px;height:20px;color:var(--c-accent);margin-top:4px}
.check-list strong{color:var(--c-text);font-weight:600}

/* FAQ */
.faq-section{background:var(--c-bg-soft)}
.faq-list{max-width:880px;display:grid;gap:14px}
.faq-item{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-img);
  overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item.is-open{border-color:#CFE0DE;box-shadow:var(--sh-1)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;
  min-height:64px;padding:18px 24px;background:transparent;border:0;
  text-align:left;font-size:17px;font-weight:600;color:var(--c-text);
  border-left:3px solid transparent;transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.faq-q:hover{color:var(--c-primary-mid)}
.faq-item.is-open .faq-q{border-left-color:var(--c-accent);color:var(--c-primary)}
.faq-q .faq-arrow{width:20px;height:20px;flex:none;color:var(--c-accent);transition:transform .25s ease}
.faq-item.is-open .faq-arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 24px 22px;color:var(--c-body);font-size:15px;line-height:1.75}

/* CTA 通栏 */
.cta-band{position:relative;background:var(--c-primary);color:#fff;padding:56px 0;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-70px;width:280px;height:280px;border-radius:50%;
  border:1px solid rgba(201,216,234,.28);
}
.cta-stars{
  position:absolute;inset:0;opacity:.35;pointer-events:none;
  background-image:
    radial-gradient(1.5px 1.5px at 8% 30%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 18% 68%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 30% 22%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 44% 76%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 58% 34%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 70% 70%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 82% 26%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 92% 62%, #C9D8EA 99%, transparent 100%);
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:28px}
.cta-copy h2{color:#fff;font-size:26px;line-height:1.4}
.cta-copy p{margin-top:10px;color:#C7D8EC;font-size:16px}
.cta-band .btn{flex:none}

/* 页脚 */
.site-footer{position:relative;background:var(--c-primary-dark);color:#C7D3E3;padding:64px 0 0;overflow:hidden}
.footer-stars{
  position:absolute;top:0;left:0;right:0;height:110px;opacity:.5;pointer-events:none;
  background-image:
    radial-gradient(1.5px 1.5px at 6% 42%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 16% 76%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 27% 30%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 38% 66%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 49% 24%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 61% 72%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 73% 38%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 84% 64%, #C9D8EA 99%, transparent 100%),
    radial-gradient(1.5px 1.5px at 94% 28%, #C9D8EA 99%, transparent 100%);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.site-footer h3{color:#fff;font-size:16px;font-weight:600;margin-bottom:18px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{color:#fff;font-size:19px;font-weight:600}
.footer-brand .brand-mark{width:32px;height:32px}
.site-footer p{color:#A9BACF;font-size:14px;margin:0}
.footer-links{display:grid;gap:10px}
.footer-links a{color:#C7D3E3;font-size:14px}
.footer-links a:hover{color:var(--c-accent)}
.footer-contact{margin:0;font-size:14px}
.footer-contact dt{color:#8395AC;font-size:13px;margin-top:12px}
.footer-contact dt:first-child{margin-top:0}
.footer-contact dd{margin:3px 0 0;color:#DCE6F3}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 24px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#8395AC;
}

/* 响应式 */
@media (max-width:1199px){
  .nav-list{gap:18px}
  .nav-list a{font-size:14px}
  .header-inner{gap:12px}
}
@media (max-width:991px){
  :root{--section-space:72px}
  .nav-left,.nav-right-wrap{display:none}
  .header-inner{justify-content:center;position:relative}
  .nav-toggle{display:inline-flex;position:absolute;right:0;top:50%;transform:translateY(-50%)}
  .page-hero{min-height:260px;padding:38px 0 34px}
  .page-hero h1{font-size:32px}
  .page-hero-sub{font-size:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:22px}
}
@media (max-width:767px){
  :root{--section-space:56px}
  h1{font-size:28px}
  h2{font-size:22px}
  .container{padding:0 16px}
  .page-hero{min-height:200px;padding:30px 0 28px}
  .page-hero h1{font-size:26px}
  .page-hero-sub{margin-top:12px;font-size:15px}
  .nav-drawer .container{padding:0 16px}
  .stat-item{padding-left:14px}
  .stat-num{font-size:24px}
  .tl-item{grid-template-columns:34px 1fr;gap:16px}
  .tl-marker{width:34px;height:34px;font-size:13px}
  .timeline::before{left:16.5px}
  .tl-card{padding:20px}
  .faq-q{padding:16px 18px;font-size:16px}
  .faq-a-inner{padding:0 18px 18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-band{padding:44px 0}
  .cta-copy h2{font-size:22px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:480px){
  h1{font-size:24px}
  .page-hero h1{font-size:23px}
  .section-head h2{padding-left:28px;font-size:21px}
  .h2-line{padding-left:28px}
  .btn{width:100%;padding:0 18px}
  .btn-sm{width:auto}
  .cta-inner .btn{width:100%}
  .stats-row .cell{padding-left:0;padding-right:0}
}

/* roulang page: category3 */
:root{
  --ink:#1F3A5F;
  --ink-deep:#16283F;
  --ink-mid:#2A4E7C;
  --ink-soft:#EDF3FA;
  --cyan:#2E9E8F;
  --sand:#E2795B;
  --bg:#F5F8FC;
  --white:#FFFFFF;
  --alt:#EAF1F9;
  --row:#F7F9FC;
  --line:#E2EAF4;
  --t1:#101B2B;
  --t2:#435066;
  --t3:#7C8A9E;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh1:0 2px 6px rgba(31,58,95,.06);
  --sh2:0 14px 34px rgba(31,58,95,.12);
  --gap-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.75;color:var(--t2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .2s}
a:hover{color:var(--cyan)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:600;line-height:1.35}
p{margin:0}
button{font:inherit;cursor:pointer}
dl,dd,dt{margin:0}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--gap-section) 0}
.section-alt{background:var(--alt)}
.section-white{background:var(--white)}
.section-head{max-width:780px;margin-bottom:44px}
.section-head h2{font-size:30px;position:relative;padding-left:38px}
.section-head h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:24px;height:3px;border-radius:2px;background:var(--cyan)}
.section-head p{margin-top:14px;font-size:16px;color:var(--t2)}
.section-head .head-more{margin-top:16px;display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--ink);border-bottom:1px solid transparent}
.section-head .head-more:hover{border-bottom-color:var(--cyan);color:var(--cyan)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:background .22s,color .22s,transform .22s,box-shadow .22s,border-color .22s;letter-spacing:.01em}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--ink-mid);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-primary:active{background:var(--ink-deep);transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink-soft);color:var(--ink);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--ink-soft);color:var(--ink);transform:translateY(-1px)}
.btn-sm{height:40px;min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);border-bottom:1px solid transparent}
.link-more:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;line-height:1.6;letter-spacing:.02em}
.badge-cyan{background:rgba(46,158,143,.12);color:#1E6E63}
.badge-sand{background:rgba(226,121,91,.14);color:#B0492C}
.badge-ink{background:rgba(31,58,95,.08);color:var(--ink-mid)}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:box-shadow .25s,border-color .25s}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(31,58,95,.07)}
.header-inner{display:flex;align-items:center;height:72px;gap:16px;position:relative}
.nav-left,.nav-right-wrap{flex:1 1 0;min-width:0}
.nav-right-wrap{display:flex;align-items:center;justify-content:flex-end;gap:18px}
.nav-list{display:flex;align-items:center;gap:22px}
.nav-left .nav-list{justify-content:flex-start}
.nav-right-wrap .nav-list{justify-content:flex-end}
.nav-list a{position:relative;display:inline-flex;align-items:center;height:72px;font-size:15px;color:var(--ink);white-space:nowrap}
.nav-list a::after{content:"";position:absolute;left:0;right:0;bottom:16px;height:3px;border-radius:2px;background:var(--cyan);transform:scaleX(0);transition:transform .25s}
.nav-list a:hover{color:var(--ink-mid)}
.nav-list a:hover::after{transform:scaleX(1)}
.nav-list a.is-active{font-weight:600;color:var(--ink)}
.nav-list a.is-active::after{transform:scaleX(1)}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;flex:0 0 34px}
.brand-text{font-size:19px;font-weight:600;color:var(--t1);letter-spacing:.02em;white-space:nowrap}
.nav-toggle{display:none;width:44px;height:44px;border:0;background:transparent;position:relative;padding:0}
.nav-toggle span{position:absolute;left:11px;right:11px;top:50%;height:2px;margin-top:-1px;background:var(--ink);border-radius:2px;transition:background .25s}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;right:0;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s,top .25s}
.nav-toggle span::before{top:-7px}
.nav-toggle span::after{top:7px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(16,27,43,.38);opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s;z-index:85}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{position:fixed;top:0;left:0;right:0;z-index:90;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 20px 44px rgba(31,58,95,.16);transform:translateY(-102%);transition:transform .32s cubic-bezier(.4,.8,.3,1);visibility:hidden;padding-bottom:24px}
.mobile-drawer.is-open{transform:translateY(0);visibility:visible}
.drawer-close{position:absolute;top:14px;right:16px;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;display:flex;align-items:center;justify-content:center;color:var(--ink)}
.drawer-close:hover{border-color:var(--cyan);color:var(--cyan)}
.drawer-list{margin-top:72px;padding:0 20px}
.drawer-list li a{display:flex;align-items:center;height:56px;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink)}
.drawer-list li a.is-active{font-weight:600;color:var(--ink)}
.drawer-list li a.is-active::before{content:"";width:3px;height:18px;border-radius:2px;background:var(--cyan);margin-right:10px}
.drawer-cta{padding:20px 20px 0}

/* Banner */
.page-banner{position:relative;min-height:280px;display:flex;align-items:center;overflow:hidden;border-bottom:1px solid var(--line);background-image:linear-gradient(180deg,rgba(255,255,255,.92) 0%,rgba(237,243,250,.88) 100%),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center}
.page-banner::after{content:"";position:absolute;right:-40px;top:-60px;width:340px;height:340px;border-radius:50%;border:1px solid #C9D8EA;opacity:.7;pointer-events:none}
.banner-inner{position:relative;z-index:2;padding:56px 0;width:100%}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:16px}
.breadcrumb a{color:var(--t2)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb .sep{color:#BCC7D6}
.breadcrumb .current{color:var(--ink);font-weight:600}
.page-banner h1{font-size:40px;line-height:1.25;font-weight:600;color:var(--t1)}
.page-banner .banner-sub{margin-top:16px;font-size:18px;line-height:1.7;color:var(--t2);max-width:720px}
.banner-tags{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px}

/* 对比矩阵 */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;padding-top:18px}
.plan-scroll-wrap{position:relative}
.plan-card{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh1);transition:transform .25s,box-shadow .25s}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--sh2)}
.plan-card.is-featured{border:2px solid var(--cyan);transform:translateY(-8px);box-shadow:var(--sh2)}
.plan-card.is-featured:hover{transform:translateY(-12px)}
.plan-badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--cyan);color:#fff;font-size:12px;padding:4px 14px;border-radius:999px;white-space:nowrap;letter-spacing:.04em}
.plan-name{font-size:20px;color:var(--t1)}
.plan-note{margin-top:6px;font-size:13px;color:var(--t3)}
.plan-price{margin-top:18px;display:flex;align-items:baseline;gap:6px;color:var(--ink);font-variant-numeric:tabular-nums}
.plan-price strong{font-size:30px;font-weight:600;letter-spacing:.01em}
.plan-price .unit{font-size:13px;color:var(--t3);font-weight:400}
.plan-cta{margin:18px 0 22px}
.plan-features{border-top:1px solid var(--line);padding-top:6px;flex:1}
.plan-features li{display:flex;align-items:flex-start;gap:10px;min-height:46px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px;line-height:1.6;color:var(--t2)}
.plan-features li:last-child{border-bottom:0}
.plan-features .fi{flex:0 0 20px;width:20px;height:20px;margin-top:3px;color:var(--cyan)}
.plan-features .fi-off{color:#C3CDDA}
.plan-scroll-hint{display:none;margin-top:10px;font-size:13px;color:var(--t3)}

/* 规格清单 */
.spec-layout{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start}
.spec-list{display:grid;grid-template-columns:210px 1fr;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.spec-list dt{padding:16px 20px;font-size:15px;font-weight:600;color:var(--t1);background:var(--row);border-bottom:1px solid var(--line)}
.spec-list dd{padding:16px 20px;font-size:15px;color:var(--t2);border-bottom:1px solid var(--line)}
.spec-list dt:last-of-type,.spec-list dd:last-of-type{border-bottom:0}
.spec-aside{position:sticky;top:96px}
.spec-aside figure{margin:0}
.spec-aside img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line)}
.spec-aside figcaption{margin-top:10px;font-size:13px;color:var(--t3);text-align:center}
.aside-card{margin-top:24px;background:var(--ink-soft);border-radius:var(--r-card);padding:24px}
.aside-card h3{font-size:17px}
.aside-card p{margin-top:10px;font-size:14px;color:var(--t2)}
.aside-card .link-more{margin-top:14px}

/* 场景建议 */
.scene-grid{row-gap:24px}
.scene-card{height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh1)}
.scene-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.scene-card .scene-body{padding:24px}
.scene-card h3{font-size:20px}
.scene-card p{margin-top:12px;font-size:15px;color:var(--t2)}
.scene-side{display:grid;gap:24px;height:100%}
.scene-mini{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh1);transition:transform .25s,box-shadow .25s}
.scene-mini:hover{transform:translateY(-4px);box-shadow:var(--sh2)}
.scene-mini h3{font-size:17px}
.scene-mini p{margin-top:10px;font-size:14px;color:var(--t2)}

/* FAQ */
.faq-wrap{max-width:900px}
.accordion{background:transparent;border:0;margin:0}
.accordion .accordion-item{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:12px;overflow:hidden;box-shadow:var(--sh1)}
.accordion .accordion-title{display:block;padding:18px 56px 18px 20px;font-size:17px;font-weight:600;color:var(--t1);border:0;background:transparent;position:relative;line-height:1.6;transition:color .2s,padding .2s}
.accordion .accordion-title:hover{color:var(--ink-mid);text-decoration:none}
.accordion .accordion-title::before{content:"";position:absolute;right:22px;top:50%;width:10px;height:10px;margin:0;transform:translateY(-70%) rotate(45deg);border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);border-radius:1px;transition:transform .25s,border-color .25s}
.accordion .accordion-item.is-active{border-left:3px solid var(--cyan)}
.accordion .accordion-item.is-active .accordion-title::before{transform:translateY(-30%) rotate(-135deg);border-color:var(--cyan)}
.accordion .accordion-content{border:0;background:#FAFCFE;padding:0 20px 20px;font-size:15px;line-height:1.75;color:var(--t2)}
.accordion .accordion-content p+p{margin-top:12px}

/* CTA 通栏 */
.cta-band{background:var(--ink);padding:56px 0;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;border:1px solid rgba(201,216,234,.35)}
.cta-band .cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:26px}
.cta-band p{margin-top:10px;color:#C7D3E3;font-size:15px;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* 页脚 */
.site-footer{position:relative;background:var(--ink-deep);color:#C7D3E3;padding:72px 0 32px;overflow:hidden}
.footer-stars{position:absolute;top:0;left:0;right:0;height:120px;background-image:radial-gradient(rgba(255,255,255,.4) 1.2px,transparent 1.4px);background-size:52px 44px;opacity:.35;pointer-events:none}
.site-footer .container{position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{color:#fff;font-size:19px;font-weight:600}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em}
.site-footer p{font-size:14px;color:#A9B9CE;max-width:280px}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#C7D3E3;font-size:14px}
.footer-links a:hover{color:var(--cyan)}
.footer-contact dt{font-size:12px;color:#8FA3BE;margin-bottom:2px}
.footer-contact dd{font-size:14px;color:#D6E0EE;margin-bottom:14px}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8FA3BE}

/* 响应式 */
@media (max-width:1199px){
  :root{--gap-section:72px}
  .page-banner h1{font-size:36px}
  .spec-layout{gap:32px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:991px){
  .nav-left,.nav-right-wrap{display:none}
  .nav-toggle{display:block;margin-left:auto}
  .header-inner{justify-content:center}
  .nav-toggle{position:absolute;right:0;top:50%;transform:translateY(-50%)}
  .plan-grid{grid-auto-flow:column;grid-auto-columns:minmax(268px,82%);grid-template-columns:none;overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;gap:16px;padding:18px 4px 20px}
  .plan-card{scroll-snap-align:start}
  .plan-card.is-featured{transform:none}
  .plan-card.is-featured:hover{transform:translateY(-4px)}
  .plan-scroll-wrap::after{content:"";position:absolute;top:0;right:0;bottom:20px;width:44px;background:linear-gradient(90deg,rgba(245,248,252,0),rgba(245,248,252,.96));pointer-events:none}
  .plan-scroll-hint{display:block}
  .spec-layout{grid-template-columns:1fr}
  .spec-aside{position:static}
  .spec-aside img{aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  body{font-size:15px}
  .container{padding:0 16px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:22px;padding-left:32px}
  .section-head h2::before{width:20px}
  .page-banner{min-height:200px}
  .banner-inner{padding:40px 0}
  .page-banner h1{font-size:28px}
  .page-banner .banner-sub{font-size:16px;margin-top:12px}
  .plan-grid{grid-auto-columns:minmax(240px,86%)}
  .spec-list{grid-template-columns:1fr}
  .spec-list dt{padding:14px 18px;border-bottom:0}
  .spec-list dd{padding:0 18px 16px}
  .cta-band{padding:44px 0}
  .cta-band h2{font-size:21px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:480px){
  .page-banner h1{font-size:26px}
  .plan-price strong{font-size:26px}
  .btn{width:100%}
  .plan-cta .btn{width:100%}
  .badge{font-size:12px}
}

/* roulang page: category4 */
:root{
  --navy:#1F3A5F;
  --navy-deep:#16283F;
  --navy-mid:#2A4E7C;
  --navy-pale:#EDF3FA;
  --teal:#2E9E8F;
  --sand:#E2795B;
  --bg:#F5F8FC;
  --bg-alt:#EAF1F9;
  --card:#FFFFFF;
  --line:#E2EAF4;
  --line-soft:#EDF3FA;
  --text:#101B2B;
  --text-2:#435066;
  --text-3:#7C8A9E;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-1:0 2px 6px rgba(31,58,95,.06);
  --shadow-2:0 14px 34px rgba(31,58,95,.12);
  --container:1200px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text-2);
  background:var(--bg);
  font-weight:400;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--text);margin:0;font-weight:600;letter-spacing:0}
h1{font-size:40px;line-height:1.25}
h2{font-size:30px;line-height:1.35}
h3{font-size:20px;line-height:1.5}
h4{font-size:17px;line-height:1.6}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
dl,dd{margin:0}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:48px}
.section-title{position:relative;padding-left:34px}
.section-title::before{
  content:"";position:absolute;left:0;top:.52em;width:24px;height:3px;border-radius:2px;background:var(--teal);
}
.section-sub{font-size:16px;color:var(--text-2);margin-top:14px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:4px 14px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(46,158,143,.12);color:#1F6157;margin-bottom:18px;
}
.eyebrow-warm{background:rgba(226,121,91,.14);color:#8C3B24}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 18px rgba(31,58,95,.07)}
.header-inner{
  position:relative;
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:72px;gap:16px;
}
.nav-left,.nav-right-wrap{display:flex;align-items:center}
.nav-left{justify-self:start}
.nav-right-wrap{justify-self:end;gap:18px}
.nav-list{display:flex;align-items:center;gap:26px}
.nav-list a{
  position:relative;display:inline-flex;align-items:center;height:44px;
  font-size:15px;color:var(--text-2);
}
.nav-list a:hover{color:var(--navy)}
.nav-list a.is-active{color:var(--navy);font-weight:600}
.nav-list a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:5px;height:3px;border-radius:2px;background:var(--teal);
}
.brand{
  justify-self:center;display:inline-flex;align-items:center;gap:10px;
  min-height:44px;
}
.brand-mark{width:34px;height:34px;flex:none}
.brand-text{font-size:19px;font-weight:600;color:var(--navy);letter-spacing:.01em}
.nav-toggle{
  display:none;width:44px;height:44px;border:0;background:transparent;
  position:absolute;right:16px;top:50%;transform:translateY(-50%);cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:22px;height:2px;border-radius:2px;background:var(--navy);
}
.nav-toggle span{top:50%;transform:translate(-50%,-50%)}
.nav-toggle span::before,.nav-toggle span::after{content:"";left:0}
.nav-toggle span::before{top:-7px}
.nav-toggle span::after{top:7px}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;background:#fff;
  transform:translateY(-100%);transition:transform .32s ease;
  display:flex;flex-direction:column;padding:16px 24px 28px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;min-height:56px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;border:0;background:transparent;cursor:pointer;position:relative;margin-right:-8px;
}
.drawer-close::before,.drawer-close::after{
  content:"";position:absolute;left:50%;top:50%;width:20px;height:2px;border-radius:2px;background:var(--navy);
}
.drawer-close::before{transform:translate(-50%,-50%) rotate(45deg)}
.drawer-close::after{transform:translate(-50%,-50%) rotate(-45deg)}
.drawer-nav{margin-top:8px;flex:1}
.drawer-nav li{border-bottom:1px solid var(--line)}
.drawer-nav a{display:flex;align-items:center;min-height:56px;font-size:16px;color:var(--text)}
.drawer-nav a.is-active{color:var(--navy);font-weight:600}
.drawer-cta{margin-top:22px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;line-height:1.2;cursor:pointer;
  border:1px solid transparent;background:transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  text-align:center;
}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:#28496F;transform:translateY(-1px);box-shadow:0 10px 24px rgba(31,58,95,.18);color:#fff}
.btn-primary:active{background:var(--navy-deep);transform:translateY(0)}
.btn-ghost{border-color:var(--navy);color:var(--navy);background:transparent}
.btn-ghost:hover{background:var(--navy-pale);transform:translateY(-1px);color:var(--navy)}
.btn-light{background:#fff;color:var(--navy)}
.btn-light:hover{background:#EAF1F9;transform:translateY(-1px);color:var(--navy)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;letter-spacing:.01em;
}
.badge-teal{background:rgba(46,158,143,.12);color:#1F6157}
.badge-navy{background:var(--navy-pale);color:var(--navy)}
.badge-sand{background:rgba(226,121,91,.14);color:#8C3B24}

/* ============ 页面横幅 ============ */
.page-banner{
  position:relative;overflow:hidden;
  min-height:280px;display:flex;align-items:center;
  padding:64px 0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.95) 0%,rgba(234,241,249,.86) 100%);
}
.banner-inner{position:relative;z-index:2;max-width:780px}
.breadcrumb{display:flex;align-items:center;margin-bottom:18px;font-size:13px;color:var(--text-3)}
.breadcrumb li{display:flex;align-items:center}
.breadcrumb li+li::before{
  content:"";width:14px;height:1px;background:#C9D8EA;margin:0 10px;
}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--teal)}
.page-banner h1{margin-bottom:16px}
.banner-sub{font-size:17px;color:var(--text-2);max-width:640px}
.banner-meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:22px;font-size:13px;color:var(--text-3)}
.banner-meta span{display:inline-flex;align-items:center;gap:6px}
.banner-meta svg{width:16px;height:16px;flex:none}

/* ============ 预约表单区 ============ */
.booking-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.booking-intro h2{margin-bottom:16px}
.booking-intro p{font-size:16px}
.intro-list{margin:26px 0 30px}
.intro-list li{display:flex;gap:12px;align-items:flex-start;margin-bottom:14px;font-size:15px;color:var(--text-2)}
.intro-list svg{width:20px;height:20px;flex:none;margin-top:3px}
.intro-media{
  border-radius:var(--radius-img);overflow:hidden;margin-top:26px;
  box-shadow:var(--shadow-1);
}
.intro-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.intro-contact{
  margin-top:26px;padding:20px 22px;border-radius:var(--radius-card);
  background:var(--navy-pale);
}
.intro-contact h3{font-size:16px;margin-bottom:10px}
.intro-contact dl{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:14px;color:var(--text-2)}
.intro-contact dt{color:var(--text-3)}

.form-card{
  background:var(--card);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-1);
}
.form-card h3{font-size:20px;margin-bottom:8px}
.form-card .form-hint{font-size:14px;color:var(--text-3);margin-bottom:24px}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px}
.req{color:var(--sand);margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  font-family:inherit;font-size:16px;color:var(--text);
  background:#fff;border:1px solid #DCE5F0;border-radius:var(--radius-btn);
  margin:0;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#9FAEC2}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--navy);box-shadow:0 0 0 2px rgba(31,58,95,.16);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{
  border-color:var(--sand);box-shadow:0 0 0 2px rgba(226,121,91,.16);
}
.field-error{display:none;font-size:12px;color:#B4482A;margin-top:6px}
.field.has-error .field-error{display:block}
.form-note{font-size:13px;color:var(--text-3);margin-top:16px;line-height:1.6}
.form-status{
  display:none;margin-bottom:20px;padding:12px 16px;border-radius:8px;
  font-size:14px;background:#E8F5F2;border-left:4px solid var(--teal);color:#1F5148;
}
.form-status.is-visible{display:block}
.form-status.is-error{background:#FDF0EC;border-left-color:var(--sand);color:#8C3B24}

/* ============ 服务承诺 2×2 ============ */
.promise-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.promise-card{
  background:var(--card);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.promise-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.promise-ico{
  width:44px;height:44px;border-radius:12px;background:var(--navy-pale);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.promise-ico svg{width:22px;height:22px}
.promise-card h3{font-size:18px;margin-bottom:8px}
.promise-card p{font-size:15px;color:var(--text-2);margin:0}

/* ============ 预约流程 ============ */
.flow-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.flow-list{counter-reset:flow}
.flow-list li{
  position:relative;padding-left:62px;padding-bottom:28px;
}
.flow-list li:last-child{padding-bottom:0}
.flow-list li::before{
  counter-increment:flow;content:counter(flow,decimal-leading-zero);
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
  background:var(--navy);color:#fff;font-size:14px;font-weight:600;
  display:flex;align-items:center;justify-content:center;letter-spacing:.02em;
}
.flow-list li:not(:last-child)::after{
  content:"";position:absolute;left:20px;top:48px;bottom:6px;width:1px;background:var(--teal);opacity:.45;
}
.flow-list h4{margin-bottom:6px}
.flow-list p{font-size:15px;margin:0;color:var(--text-2)}
.flow-media{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
.flow-media img{width:100%;aspect-ratio:4/5;object-fit:cover}
@media(min-width:992px){.flow-media img{aspect-ratio:4/5}}

/* ============ FAQ ============ */
.faq-list{background:var(--card);border:1px solid var(--line);border-radius:12px;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:18px;
  min-height:64px;padding:18px 24px;background:transparent;border:0;
  font-size:17px;font-weight:600;color:var(--text);text-align:left;cursor:pointer;
  transition:box-shadow .2s ease,color .2s ease;
}
.faq-q:hover{color:var(--navy)}
.faq-q .faq-sign{
  flex:none;width:22px;height:22px;position:relative;
}
.faq-q .faq-sign::before,.faq-q .faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--navy);border-radius:2px;
}
.faq-q .faq-sign::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-q .faq-sign::after{width:2px;height:14px;transform:translate(-50%,-50%);transition:transform .2s ease,opacity .2s ease}
.faq-item.is-open .faq-q{box-shadow:inset 3px 0 0 var(--teal)}
.faq-item.is-open .faq-q .faq-sign::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 24px 22px;font-size:15px;color:var(--text-2);max-width:820px}
.faq-a-inner p{margin-bottom:10px}
.faq-a-inner p:last-child{margin-bottom:0}

/* ============ CTA 通栏 ============ */
.cta-band{
  background:var(--navy);border-radius:var(--radius-card);
  padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  color:#fff;
}
.cta-band h2{color:#fff;font-size:24px;margin-bottom:8px}
.cta-band p{color:#C7D3E3;font-size:15px;margin:0}
.cta-band .cta-actions{flex:none;display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--navy-deep);color:#C7D3E3;
  padding:64px 0 0;overflow:hidden;
}
.footer-stars{
  position:absolute;top:0;left:0;right:0;height:80px;opacity:.22;pointer-events:none;
  background-image:
    radial-gradient(circle,#C9D8EA 1.2px,transparent 1.6px),
    radial-gradient(circle,#C9D8EA 1.2px,transparent 1.6px);
  background-size:120px 58px,180px 74px;
  background-position:18px 14px,86px 40px;
}
.site-footer .container{position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{color:#fff;font-size:18px;font-weight:600}
.site-footer h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.site-footer p{font-size:14px;color:#A9B9CE;line-height:1.7;max-width:280px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:#C7D3E3}
.footer-links a:hover{color:var(--teal)}
.footer-contact{display:grid;grid-template-columns:auto 1fr;gap:8px 14px;font-size:14px}
.footer-contact dt{color:#8FA3BE}
.footer-contact dd{color:#DCE5F0;margin:0}
.footer-bottom{
  margin-top:48px;padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#8FA3BE;
}

/* ============ 响应式 ============ */
@media(max-width:1199px){
  h1{font-size:34px}
  h2{font-size:26px}
  .booking-grid{gap:36px}
}
@media(max-width:991px){
  .section{padding:72px 0}
  .nav-left,.nav-right-wrap{display:none}
  .header-inner{display:flex;justify-content:center}
  .brand{position:absolute;left:50%;transform:translateX(-50%)}
  .nav-toggle{display:block;right:8px}
  .booking-grid{grid-template-columns:1fr;gap:32px}
  .flow-grid{grid-template-columns:1fr;gap:32px}
  .flow-media img{aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
}
@media(max-width:767px){
  .section{padding:56px 0}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .container{padding:0 16px}
  .page-banner{min-height:200px;padding:44px 0}
  .banner-sub{font-size:16px}
  .section-head{margin-bottom:32px}
  .promise-grid{grid-template-columns:1fr}
  .form-card{padding:24px}
  .faq-q{padding:16px 20px;font-size:16px}
  .faq-a-inner{padding:0 20px 20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn{width:100%}
}
@media(max-width:480px){
  h1{font-size:24px}
  h2{font-size:20px}
  body{font-size:15px}
  .btn{width:100%}
  .btn-sm{width:auto}
  .nav-right-wrap .btn-sm,.header-inner>.btn{width:auto}
  .banner-meta{flex-direction:column;gap:8px}
}