/* roulang page: index */
:root{
  --brand-700:#134E82;
  --brand-600:#1B6CB0;
  --brand-500:#2E86D0;
  --brand-050:#E9F2FA;
  --accent-600:#D98A22;
  --accent-500:#F0A63C;
  --accent-050:#FDF3E3;
  --ink-900:#10222F;
  --ink-700:#33475A;
  --ink-500:#64798C;
  --bg-page:#F5F7FA;
  --bg-soft:#EDF1F6;
  --surface:#FFFFFF;
  --line:#E2E8F0;
  --line-strong:#CFD9E4;
  --ok:#2E9E6B;
  --warn:#D9534F;
  --radius-card:12px;
  --radius-btn:8px;
  --radius-input:8px;
  --radius-badge:999px;
  --radius-img:10px;
  --shadow-card:0 1px 2px rgba(16,34,47,.04),0 10px 24px rgba(16,34,47,.06);
  --shadow-hover:0 4px 10px rgba(16,34,47,.06),0 18px 36px rgba(16,34,47,.10);
  --shadow-float:0 8px 20px rgba(16,34,47,.10),0 24px 48px rgba(16,34,47,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--brand-600);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:30px;}
h3{font-size:22px;font-weight:600;}
h4{font-size:18px;font-weight:600;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 布局容器 ============ */
.grid-container{max-width:1200px;padding-left:20px;padding-right:20px;}
@media screen and (min-width:1200px){.grid-container{max-width:1280px;}}
.section{padding:80px 0;}
.section--soft{background:var(--bg-soft);}
.section--tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.section-head p{margin:8px 0 0;color:var(--ink-500);font-size:14px;}
.eyebrow{font-size:12px;letter-spacing:.02em;color:var(--brand-600);font-weight:600;text-transform:none;}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:all var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 2px 6px rgba(27,108,176,.20);}
.btn-primary:hover{background:#17629F;color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(27,108,176,.26);}
.btn-accent{background:var(--accent-500);color:#3A2606;box-shadow:0 2px 6px rgba(217,138,34,.22);}
.btn-accent:hover{background:var(--accent-600);color:#2E1E04;transform:translateY(-1px);box-shadow:0 8px 18px rgba(217,138,34,.30);}
.btn-ghost{background:var(--surface);border-color:var(--line-strong);color:var(--ink-700);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-ghost-light:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.12);}
.btn:active{transform:translateY(1px);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-size:15px;font-weight:600;}
.btn-text i{transition:transform var(--dur) var(--ease);}
.btn-text:hover i{transform:translateX(4px);}

/* ============ 顶部工具条 ============ */
.toolbar{height:36px;background:var(--bg-soft);border-bottom:1px solid var(--line);display:flex;align-items:center;font-size:14px;color:var(--ink-500);}
.toolbar .grid-container{display:flex;justify-content:space-between;align-items:center;width:100%;}
.toolbar-left{display:flex;align-items:center;gap:10px;}
.toolbar-left i{color:var(--brand-500);}
.toolbar-right{display:flex;align-items:center;gap:18px;}
.toolbar-right a{color:var(--ink-500);font-size:14px;}
.toolbar-right a:hover{color:var(--brand-600);}

/* ============ 品牌行 ============ */
.brandbar{background:var(--surface);border-bottom:1px solid var(--line);position:relative;z-index:40;}
.brandbar .grid-container{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;flex:none;}
.logo-mark{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand-600),var(--brand-500));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;
  box-shadow:0 6px 14px rgba(27,108,176,.28);
}
.logo-text{font-size:20px;font-weight:700;color:var(--brand-600);letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;font-size:15px;color:var(--ink-700);font-weight:500;padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand-600);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);
}
.main-nav a:hover{color:var(--brand-600);}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--brand-600);font-weight:600;}
.brand-actions{display:flex;align-items:center;gap:14px;flex:none;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--radius-btn);border:1px solid var(--line);
  background:var(--surface);color:var(--ink-700);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:all var(--dur) var(--ease);
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-600);}
.nav-toggle{display:none;}

/* ============ 频道行 ============ */
.channelbar{
  position:sticky;top:0;z-index:50;background:var(--surface);
  border-bottom:1px solid var(--line);transition:box-shadow var(--dur) var(--ease);
}
.channelbar.is-stuck{box-shadow:0 1px 2px rgba(16,34,47,.06);}
.channel-inner{display:flex;align-items:center;gap:10px;height:48px;overflow-x:auto;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-link{
  flex:none;scroll-snap-align:start;
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 16px;border-radius:var(--radius-badge);
  font-size:14px;color:var(--ink-700);border:1px solid var(--line);background:var(--surface);
  transition:all var(--dur) var(--ease);white-space:nowrap;
}
.channel-link:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-050);}
.channel-link.is-active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;font-weight:600;}
.channel-link.is-active:hover{background:var(--brand-700);color:#fff;}

/* ============ 移动端抽屉 ============ */
.mobile-nav{
  display:none;border-top:1px solid var(--line);background:var(--surface);
  padding:16px 20px 22px;
}
.mobile-nav.is-open{display:block;}
.mobile-nav a{display:block;padding:12px 4px;font-size:16px;color:var(--ink-700);border-bottom:1px solid var(--line);}
.mobile-nav a.is-active{color:var(--brand-600);font-weight:700;}
.mobile-nav .btn{width:100%;margin-top:18px;}

/* ============ Hero ============ */
.hero{background:var(--bg-page);position:relative;overflow:hidden;padding:56px 0 64px;}
.hero-deco{
  position:absolute;top:-60px;right:-80px;width:420px;height:320px;
  background:var(--brand-050);transform:skewX(-12deg);opacity:.75;border-radius:24px;
}
.hero-dots{
  position:absolute;left:24px;bottom:36px;width:120px;height:80px;
  background-image:radial-gradient(var(--line-strong) 1.5px,transparent 1.5px);
  background-size:16px 16px;opacity:.9;
}
.hero-grid{position:relative;z-index:2;}
.hero h1{font-size:40px;margin-bottom:18px;}
.hero-sub{font-size:17px;color:var(--ink-700);line-height:1.8;max-width:34em;margin-bottom:26px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px;}
.hero-trust{display:flex;gap:26px;flex-wrap:wrap;}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-700);}
.trust-item i{font-size:20px;color:var(--brand-500);}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;height:420px;object-fit:cover;border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}
.float-card{
  position:absolute;left:-24px;bottom:32px;width:250px;background:var(--surface);
  border-radius:var(--radius-card);padding:16px 18px;box-shadow:var(--shadow-float);
  border:1px solid var(--line);
}
.float-card .badge{position:absolute;top:-11px;left:16px;}
.float-card .f-title{font-size:13px;color:var(--ink-500);}
.float-card .f-price{font-size:24px;font-weight:700;color:var(--ink-900);margin:2px 0 6px;}
.float-card .f-price small{font-size:13px;font-weight:400;color:var(--ink-500);}
.float-card .f-meta{font-size:13px;color:var(--ink-500);display:flex;justify-content:space-between;}
.stars{color:var(--accent-500);font-size:13px;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:5px;height:24px;padding:0 12px;
  border-radius:var(--radius-badge);font-size:13px;line-height:1;font-weight:600;
}
.badge-brand{background:var(--brand-050);color:var(--brand-600);}
.badge-accent{background:var(--accent-050);color:var(--accent-600);}
.badge-soft{background:var(--bg-soft);color:var(--ink-500);font-weight:500;}

/* ============ 频道快捷条 ============ */
.quick-channel{background:var(--surface);border-bottom:1px solid var(--line);padding:18px 0;}
.quick-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;}
.quick-list{display:flex;gap:10px;flex-wrap:wrap;}
.quick-list a{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;border-radius:var(--radius-badge);
  background:var(--brand-050);color:var(--brand-700);font-size:14px;
  transition:all var(--dur) var(--ease);
}
.quick-list a:hover{background:var(--brand-600);color:#fff;}

/* ============ 商品卡 ============ */
.product-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  box-shadow:var(--shadow-card);transition:all var(--dur) var(--ease);position:relative;
}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.pc-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--bg-soft);}
.pc-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform var(--dur) var(--ease);}
.product-card:hover .pc-media img{transform:scale(1.03);}
.pc-media .badge{position:absolute;top:12px;left:12px;}
.pc-quick{
  position:absolute;left:50%;bottom:14px;transform:translate(-50%,10px);
  opacity:0;pointer-events:none;transition:all var(--dur) var(--ease);
  background:rgba(255,255,255,.94);color:var(--brand-700);border:1px solid var(--line);
  height:34px;padding:0 16px;border-radius:var(--radius-badge);font-size:13px;font-weight:600;
  display:inline-flex;align-items:center;gap:6px;
}
.product-card:hover .pc-quick{opacity:1;transform:translate(-50%,0);pointer-events:auto;}
.pc-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;gap:8px;}
.pc-chip{align-self:flex-start;}
.pc-title{font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.pc-title a{color:var(--ink-900);}
.pc-title a:hover{color:var(--brand-600);}
.pc-point{font-size:13px;color:var(--ink-500);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.pc-foot{margin-top:auto;display:flex;align-items:flex-end;justify-content:space-between;gap:12px;}
.pc-price{font-size:20px;font-weight:700;color:var(--brand-700);}
.pc-price small{font-size:12px;font-weight:400;color:var(--ink-500);}
.pc-add{
  width:36px;height:36px;border-radius:var(--radius-btn);border:none;cursor:pointer;
  background:var(--accent-500);color:#3A2606;display:inline-flex;align-items:center;justify-content:center;
  transition:all var(--dur) var(--ease);
}
.pc-add:hover{background:var(--accent-600);transform:translateY(-1px);}
.product-card--wide .pc-media{aspect-ratio:16/10;}

/* ============ 评价轮播 ============ */
.review-card{
  background:var(--bg-soft);border-radius:var(--radius-card);padding:22px;height:100%;
  border:1px solid var(--line);display:flex;flex-direction:column;gap:14px;
}
.review-head{display:flex;align-items:center;gap:12px;}
.avatar{
  width:44px;height:44px;border-radius:50%;flex:none;
  background:var(--brand-050);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;
}
.review-name{font-size:15px;font-weight:600;color:var(--ink-900);}
.review-role{font-size:13px;color:var(--ink-500);}
.review-text{font-size:14px;color:var(--ink-700);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.review-link{display:block;padding-top:12px;border-top:1px solid var(--line);font-size:13px;}
.orbit-wrapper{position:relative;}
.orbit-bullets button{background:var(--line-strong);width:9px;height:9px;}
.orbit-bullets button.is-active{background:var(--brand-600);}
.orbit-previous,.orbit-next{
  width:40px;height:40px;border-radius:50%;background:var(--surface);color:var(--brand-600);
  border:1px solid var(--line);box-shadow:var(--shadow-card);display:flex;align-items:center;justify-content:center;
}
.orbit-previous:hover,.orbit-next:hover{background:var(--brand-600);color:#fff;}

/* ============ 保障条 ============ */
.assure{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:28px 0;}
.assure-item{display:flex;gap:14px;align-items:flex-start;}
.assure-item i{font-size:36px;color:var(--brand-500);line-height:1;}
.assure-item h4{font-size:16px;margin-bottom:4px;}
.assure-item p{font-size:13px;color:var(--ink-500);margin:0;line-height:1.7;}

/* ============ 资讯卡 ============ */
.post-lead{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);height:100%;display:flex;flex-direction:column;
  transition:all var(--dur) var(--ease);
}
.post-lead:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.post-lead .pl-media{aspect-ratio:16/9;overflow:hidden;background:var(--bg-soft);}
.post-lead .pl-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.post-lead .pl-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-lead h3{font-size:22px;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-lead h3 a{color:var(--ink-900);}
.post-lead h3 a:hover{color:var(--brand-600);}
.post-lead p{font-size:15px;color:var(--ink-700);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-row{
  display:flex;gap:16px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:14px;box-shadow:var(--shadow-card);
  transition:all var(--dur) var(--ease);align-items:center;
}
.post-row:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.post-row .pr-media{width:112px;height:84px;flex:none;overflow:hidden;border-radius:var(--radius-img);background:var(--bg-soft);}
.post-row .pr-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.post-row .pr-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:6px;}
.post-row h4{font-size:16px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-row h4 a{color:var(--ink-900);}
.post-row h4 a:hover{color:var(--brand-600);}
.post-row p{font-size:13px;color:var(--ink-500);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-500);flex-wrap:wrap;}
.post-meta time{font-variant-numeric:tabular-nums;}

/* ============ 空态 ============ */
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  padding:44px 20px;text-align:center;background:var(--surface);color:var(--ink-500);
}
.empty-state i{font-size:30px;color:var(--line-strong);display:block;margin-bottom:12px;}
.empty-state p{font-size:13px;margin:0 0 8px;}
.empty-state a{font-size:13px;}

/* ============ CTA 条 ============ */
.cta-band{background:var(--brand-700);padding:38px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.cta-inner h3{color:#fff;font-size:22px;margin-bottom:6px;}
.cta-inner p{color:rgba(255,255,255,.78);font-size:14px;margin:0;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ FAQ ============ */
.accordion{border:none;background:transparent;}
.accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);
  margin-bottom:14px;box-shadow:var(--shadow-card);
}
.accordion .accordion-title{
  border:none;background:transparent;font-size:16px;font-weight:600;color:var(--ink-900);
  padding:0 54px 0 20px;height:60px;line-height:60px;border-radius:var(--radius-card);
  transition:color var(--dur) var(--ease);
}
.accordion .accordion-title:hover{background:var(--brand-050);color:var(--brand-700);}
.accordion .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  color:var(--brand-600);font-size:14px;transition:transform var(--dur) var(--ease);
  margin:0;line-height:1;
}
.accordion .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(45deg);}
.accordion .accordion-content{
  border:none;border-top:1px solid var(--line);background:transparent;color:var(--ink-700);
  font-size:15px;line-height:1.85;padding:14px 20px 20px;max-width:72ch;
}
.accordion .accordion-content p:last-child{margin-bottom:0;}

/* ============ 页脚 ============ */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding:56px 0 0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-desc{font-size:14px;color:var(--ink-500);line-height:1.8;margin-bottom:14px;max-width:30em;}
.footer-keyword{font-size:14px;color:var(--brand-600);font-weight:600;margin-bottom:16px;}
.footer-contact li{font-size:14px;color:var(--ink-500);display:flex;gap:8px;margin-bottom:8px;align-items:flex-start;}
.footer-contact i{color:var(--brand-500);margin-top:5px;}
.footer-col h4{font-size:16px;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--ink-700);}
.footer-col a:hover{color:var(--brand-600);}
.footer-bottom{
  margin-top:44px;border-top:1px solid var(--line);padding:18px 0;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-500);
}
.en{font-size:12px;letter-spacing:.02em;color:var(--ink-500);}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  h1{font-size:32px;}
  .hero h1{font-size:32px;}
  h2{font-size:24px;}
  .section{padding:56px 0;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-figure img{height:340px;}
  .float-card{left:12px;bottom:18px;width:220px;}
  .toolbar-right{display:none;}
}
@media screen and (max-width:639px){
  h1{font-size:28px;}
  .hero h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .section{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .hero{padding:36px 0 44px;}
  .hero-sub{font-size:15.5px;}
  .hero-figure img{height:230px;}
  .float-card{position:static;width:100%;margin-top:14px;box-shadow:var(--shadow-card);}
  .float-card .badge{position:static;margin-bottom:8px;}
  .hero-trust{gap:16px;}
  .quick-inner{flex-direction:column;align-items:flex-start;}
  .post-row{flex-direction:column;align-items:stretch;}
  .post-row .pr-media{width:100%;height:160px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .assure-item i{font-size:28px;}
  .orbit-previous,.orbit-next{display:none;}
}

/* roulang page: article */
:root{
  --brand-700:#134E82;
  --brand-600:#1B6CB0;
  --brand-500:#2E86D0;
  --brand-050:#E9F2FA;
  --accent-600:#D98A22;
  --accent-500:#F0A63C;
  --accent-050:#FDF3E3;
  --ink-900:#10222F;
  --ink-700:#33475A;
  --ink-500:#64798C;
  --bg-page:#F5F7FA;
  --bg-soft:#EDF1F6;
  --surface:#FFFFFF;
  --line:#E2E8F0;
  --line-strong:#CFD9E4;
  --ok:#2E9E6B;
  --warn:#D9534F;
  --shadow-card:0 1px 2px rgba(16,34,47,.04), 0 10px 24px rgba(16,34,47,.06);
  --shadow-hover:0 4px 10px rgba(16,34,47,.06), 0 18px 36px rgba(16,34,47,.10);
  --radius-card:12px;
  --radius-btn:8px;
  --radius-img:10px;
  --radius-pill:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg-page);
  letter-spacing:.01em;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--brand-600);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.35;font-weight:700;}
p{margin:0 0 1em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.en{font-size:12px;letter-spacing:.02em;text-transform:none;}
.tnum{font-variant-numeric:tabular-nums;}

.grid-container{max-width:1200px;padding-left:20px;padding-right:20px;}
@media screen and (min-width:1200px){
  .grid-container{max-width:1240px;}
}

/* 顶部工具条 */
.topbar{background:var(--bg-soft);border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-500);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px;}
.topbar .tb-left{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;}
.topbar .tb-right{display:flex;align-items:center;gap:18px;}
.topbar a{color:var(--ink-500);}
.topbar a:hover{color:var(--brand-600);}
@media screen and (max-width:1023px){
  .topbar .tb-right{display:none;}
}

/* 品牌行 */
.site-header{position:relative;z-index:80;background:var(--surface);}
.brand-bar{background:var(--surface);border-bottom:1px solid var(--line);transition:height .2s var(--ease);}
.brand-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px;transition:height .2s var(--ease);}
body.is-scrolled .brand-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(140deg,var(--brand-600),var(--brand-500));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;
  box-shadow:0 4px 10px rgba(27,108,176,.28);
}
.logo-text{font-size:19px;font-weight:700;color:var(--brand-600);letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;padding:8px 14px;font-size:15px;font-weight:500;color:var(--ink-700);
  border-radius:var(--radius-btn);transition:color .18s var(--ease),background .18s var(--ease);
}
.main-nav a:hover{color:var(--brand-600);background:var(--brand-050);}
.main-nav a.is-active{color:var(--brand-600);font-weight:600;}
.main-nav a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--brand-600);border-radius:2px;
}
.brand-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border:1px solid var(--line-strong);background:var(--surface);border-radius:var(--radius-btn);
  color:var(--ink-700);cursor:pointer;font-size:15px;display:flex;align-items:center;justify-content:center;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-050);}
.hamburger{
  width:40px;height:40px;display:none;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);background:var(--surface);border-radius:var(--radius-btn);color:var(--ink-900);cursor:pointer;
}
@media screen and (max-width:1023px){
  .main-nav{display:none;}
  .hamburger{display:flex;}
  .brand-actions .btn{display:none;}
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),transform .16s var(--ease),box-shadow .18s var(--ease);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 4px 12px rgba(27,108,176,.22);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(27,108,176,.26);}
.btn-primary:active{transform:translateY(1px);}
.btn-accent{background:var(--accent-500);color:#3A2607;}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);}
.btn-accent:active{transform:translateY(1px);}
.btn-ghost{background:var(--surface);border-color:var(--line-strong);color:var(--ink-700);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
.btn-outline-light:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.12);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:14px;}
.btn-text i{transition:transform .18s var(--ease);}
.btn-text:hover i{transform:translateX(4px);}

/* 频道行 */
.channel-bar{
  position:sticky;top:0;z-index:70;background:var(--surface);border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
body.is-scrolled .channel-bar{box-shadow:0 1px 2px rgba(16,34,47,.06);}
.channel-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;flex-wrap:nowrap;-ms-overflow-style:none;scrollbar-width:none;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-nav{display:flex;align-items:center;gap:6px;white-space:nowrap;}
.channel-nav a{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--radius-pill);
  font-size:14px;color:var(--ink-700);background:var(--bg-soft);border:1px solid transparent;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.channel-nav a:hover{background:var(--brand-050);color:var(--brand-600);border-color:#CFE2F3;}
.channel-nav a.is-active{background:var(--brand-600);color:#fff;font-weight:600;}
.channel-nav a.is-active:hover{background:var(--brand-700);color:#fff;}
.channel-fade{
  margin-left:auto;font-size:12px;color:var(--ink-500);padding-left:10px;flex:0 0 auto;
  background:linear-gradient(90deg,rgba(255,255,255,0),#fff 40%);
}
@media screen and (max-width:639px){
  .channel-fade{display:none;}
}

/* 移动抽屉 */
.mobile-drawer{
  display:none;position:fixed;inset:0;z-index:120;background:rgba(16,34,47,.45);
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer-panel{
  position:absolute;top:0;right:0;width:80%;max-width:320px;height:100%;background:var(--surface);
  padding:24px 20px;box-shadow:-10px 0 30px rgba(16,34,47,.14);overflow-y:auto;
}
.mobile-drawer-panel h4{font-size:14px;color:var(--ink-500);font-weight:600;margin:18px 0 10px;}
.mobile-drawer-panel a{
  display:block;padding:12px 4px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-900);
}
.mobile-drawer-panel a:hover{color:var(--brand-600);}
.drawer-close{
  margin-left:auto;width:36px;height:36px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);background:var(--surface);border-radius:var(--radius-btn);cursor:pointer;color:var(--ink-700);
}
.drawer-head{display:flex;align-items:center;gap:10px;}

/* 主体布局 */
.article-main{padding:28px 0 72px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-500);margin-bottom:24px;}
.breadcrumb i{font-size:11px;color:var(--line-strong);}
.breadcrumb .current{color:var(--ink-700);font-weight:600;}
.breadcrumb a:hover{color:var(--brand-600);}

.article-shell{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:28px 26px 34px;
}
@media screen and (max-width:639px){
  .article-shell{padding:22px 18px 26px;}
}
.article-head{position:relative;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:26px;}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-pill);
  background:var(--brand-050);color:var(--brand-600);font-size:13px;font-weight:600;margin-bottom:14px;
}
.chip-accent{background:var(--accent-050);color:var(--accent-600);}
.article-head h1{font-size:34px;line-height:1.25;font-weight:700;letter-spacing:.01em;}
@media screen and (max-width:1023px){
  .article-head h1{font-size:28px;}
}
@media screen and (max-width:639px){
  .article-head h1{font-size:23px;}
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;
  font-size:13px;color:var(--ink-500);
}
.article-meta .sep{color:var(--line-strong);}
.share-btn{
  position:absolute;right:0;top:2px;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-500);cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:15px;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.share-btn:hover{color:var(--brand-600);border-color:var(--brand-500);background:var(--brand-050);}
@media screen and (max-width:639px){
  .share-btn{position:static;margin-top:14px;border-radius:var(--radius-btn);width:auto;height:36px;padding:0 14px;gap:6px;font-size:13px;}
}

/* 正文 */
.article-body{max-width:760px;font-size:17px;line-height:1.85;color:var(--ink-700);overflow-wrap:break-word;}
.article-body h2{
  position:relative;font-size:24px;font-weight:700;color:var(--ink-900);
  margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.24em;width:4px;height:1em;border-radius:2px;background:var(--brand-600);
}
.article-body h3{font-size:19px;font-weight:600;color:var(--ink-900);margin:28px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink-900);margin:22px 0 10px;}
.article-body p{margin:0 0 1.2em;}
.article-body a{color:var(--brand-600);border-bottom:1px solid #BFD9EF;}
.article-body strong{color:var(--ink-900);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:0;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--brand-500);
}
.article-body ol{counter-reset:item;padding-left:0;}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:item;}
.article-body ol li::before{
  content:counter(item);position:absolute;left:0;top:.35em;width:20px;height:20px;border-radius:6px;
  background:var(--brand-050);color:var(--brand-600);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  margin:22px 0;padding:16px 18px;background:var(--bg-soft);border-left:3px solid var(--brand-500);
  border-radius:0 8px 8px 0;color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{margin:22px auto;border-radius:var(--radius-img);}
.article-body figure{margin:22px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:8px;}
.article-body table{
  width:100%;border-collapse:collapse;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;font-size:15px;
}
.article-body th{
  background:var(--brand-050);color:var(--brand-600);font-weight:600;text-align:left;
  padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:var(--bg-soft);}
.article-body pre{
  background:#0F1D28;color:#DCE7F0;padding:16px 18px;border-radius:var(--radius-card);
  overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;}

.article-empty{
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);background:var(--bg-soft);
  padding:44px 24px;text-align:center;
}
.article-empty i{font-size:28px;color:var(--brand-500);}
.article-empty .empty-title{font-size:18px;font-weight:600;color:var(--ink-900);margin:14px 0 6px;}
.article-empty .empty-note{font-size:13px;color:var(--ink-500);margin-bottom:16px;}

/* 侧栏 */
.side-sticky{display:flex;flex-direction:column;gap:20px;}
@media screen and (min-width:1024px){
  .side-sticky{position:sticky;top:76px;}
}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:20px;
}
.side-card h3{font-size:17px;font-weight:600;color:var(--ink-900);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--brand-500);font-size:15px;}
.back-link{
  display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-600);margin-bottom:14px;
}
.back-link i{transition:transform .18s var(--ease);}
.back-link:hover i{transform:translateX(-4px);}
.search-form{display:flex;gap:8px;}
.search-form input{
  flex:1 1 auto;height:44px;padding:0 12px;border:1px solid var(--line-strong);border-radius:var(--radius-btn);
  font-size:14px;color:var(--ink-900);background:var(--surface);
}
.search-form input::placeholder{color:var(--ink-500);}
.search-form input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-050);}
.search-form button{
  flex:0 0 auto;height:44px;padding:0 16px;border:none;border-radius:var(--radius-btn);
  background:var(--brand-600);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:background .18s var(--ease);
}
.search-form button:hover{background:var(--brand-700);}
.rank-list li{display:flex;align-items:flex-start;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line);}
.rank-list li:last-child{border-bottom:none;padding-bottom:0;}
.rank-list .num{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;background:var(--brand-050);color:var(--brand-600);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.rank-list li:nth-child(1) .num{background:var(--brand-600);color:#fff;}
.rank-list a{font-size:14px;color:var(--ink-700);line-height:1.6;}
.rank-list a:hover{color:var(--brand-600);}
.consult-card{background:var(--brand-050);border-color:#CFE2F3;}
.consult-card p{font-size:13px;color:var(--ink-700);margin-bottom:14px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag-cloud a{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:var(--bg-soft);font-size:13px;color:var(--ink-700);
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.tag-cloud a:hover{border-color:var(--brand-500);color:var(--brand-600);background:#fff;}

/* FAQ */
.section-block{margin-top:56px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;}
.section-head h2{font-size:26px;font-weight:700;color:var(--ink-900);}
.section-head p{font-size:14px;color:var(--ink-500);margin:6px 0 0;}
@media screen and (max-width:639px){
  .section-head h2{font-size:21px;}
}
.accordion{border:none;background:transparent;}
.accordion-item{
  background:var(--surface);border:1px solid var(--line) !important;border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);margin-bottom:12px;overflow:hidden;
}
.accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:16px 20px;font-size:16px;font-weight:600;color:var(--ink-900);
  background:var(--surface);border:none;
}
.accordion-title::before{display:none;}
.accordion-title::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;color:var(--brand-600);
  transition:transform .2s var(--ease);flex:0 0 auto;
}
.accordion-item.is-active .accordion-title::after{transform:rotate(45deg);}
.accordion-content{
  padding:13px 20px 20px !important;border:none !important;background:var(--surface) !important;
  color:var(--ink-700);font-size:15px;line-height:1.8;max-width:72ch;
}
.accordion-content p:last-child{margin-bottom:0;}

/* 相关阅读 */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
@media screen and (max-width:1023px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media screen and (max-width:639px){
  .related-grid{grid-template-columns:1fr;}
}
.post-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.post-card .thumb{aspect-ratio:4/3;overflow:hidden;border-radius:0;}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .25s var(--ease);}
.post-card:hover .thumb img{transform:scale(1.03);}
.post-card .body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.post-card h3{font-size:16px;font-weight:600;line-height:1.5;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card .excerpt{font-size:14px;color:var(--ink-500);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0;}
.post-card .foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:13px;color:var(--ink-500);}
.related-more{display:flex;justify-content:center;margin-top:26px;}

/* 底部 CTA 条 */
.cta-bar{background:var(--brand-700);color:#fff;padding:34px 0;margin-top:72px;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.cta-inner h3{color:#fff;font-size:22px;font-weight:700;}
.cta-inner p{color:rgba(255,255,255,.82);font-size:14px;margin:8px 0 0;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
@media screen and (max-width:639px){
  .cta-actions .btn{width:100%;}
}

/* 页脚 */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding:56px 0 0;margin-top:0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-desc{font-size:14px;color:var(--ink-500);line-height:1.8;max-width:38ch;}
.footer-keyword{font-size:13px;color:var(--brand-600);font-weight:600;margin-bottom:16px;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-500);margin-bottom:10px;}
.footer-contact i{color:var(--brand-500);margin-top:4px;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:14px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--ink-700);}
.footer-col ul a:hover{color:var(--brand-600);}
.footer-bottom{
  border-top:1px solid var(--line);margin-top:44px;padding:18px 0;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-500);
}
@media screen and (max-width:639px){
  .site-footer{padding-top:40px;}
  .footer-desc{max-width:none;}
}

/* roulang page: category1 */
:root{
  --brand-700:#134E82;
  --brand-600:#1B6CB0;
  --brand-500:#2E86D0;
  --brand-050:#E9F2FA;
  --accent-600:#D98A22;
  --accent-500:#F0A63C;
  --accent-050:#FDF3E3;
  --ink-900:#10222F;
  --ink-700:#33475A;
  --ink-500:#64798C;
  --bg-page:#F5F7FA;
  --bg-soft:#EDF1F6;
  --surface:#FFFFFF;
  --line:#E2E8F0;
  --line-strong:#CFD9E4;
  --ok:#2E9E6B;
  --warn:#D9534F;
  --radius-card:12px;
  --radius-btn:8px;
  --radius-img:10px;
  --shadow-sm:0 1px 2px rgba(16,34,47,.04), 0 10px 24px rgba(16,34,47,.06);
  --shadow-lg:0 4px 10px rgba(16,34,47,.06), 0 18px 36px rgba(16,34,47,.10);
  --ease:ease-out;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--brand-600);text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);}
a:hover{color:var(--brand-700);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:30px;line-height:1.3;}
h3{font-size:22px;font-weight:600;}
h4{font-size:18px;font-weight:600;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
::selection{background:var(--brand-050);color:var(--brand-700);}

.grid-container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media screen and (min-width:1200px){
  .grid-container{max-width:1240px;}
}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x > .cell{padding-left:12px;padding-right:12px;}
.grid-margin-y{margin-top:-12px;}
.grid-margin-y > .cell{padding-top:12px;padding-bottom:12px;}

/* ============ 通用元件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  text-align:center;white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);
}
.btn-primary{background:var(--brand-600);color:#fff;}
.btn-primary:hover{background:#175E9C;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-accent{background:var(--accent-500);color:#3A2708;}
.btn-accent:hover{background:var(--accent-600);color:#2A1E06;transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.btn-accent:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:var(--surface);border-color:var(--line-strong);color:var(--ink-700);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-600);background:none;border:0;padding:0;height:auto;}
.btn-link i{font-size:12px;transition:transform .18s var(--ease);}
.btn-link:hover i{transform:translateX(4px);}

.tag-label{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--brand-600);
  background:var(--brand-050);border-radius:999px;padding:5px 12px;margin-bottom:14px;
}
.badge{position:absolute;top:12px;left:12px;z-index:2;font-size:13px;font-weight:600;border-radius:999px;padding:4px 12px;line-height:1.5;}
.badge-brand{background:var(--brand-050);color:var(--brand-600);}
.badge-accent{background:var(--accent-050);color:var(--accent-600);}
.chip{
  display:inline-flex;align-items:center;font-size:13px;line-height:1.6;
  color:var(--ink-700);background:var(--bg-soft);border:1px solid var(--line);
  border-radius:999px;padding:3px 10px;
}
.chip-brand{background:var(--brand-050);border-color:#CFE3F5;color:var(--brand-600);}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
.en{font-size:12px;letter-spacing:.02em;color:var(--ink-500);}

.section{padding:72px 0;}
.section-tight{padding:52px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:30px;}
.section-head p{color:var(--ink-500);font-size:14px;margin:6px 0 0;}

/* ============ 顶部工具条 ============ */
.top-bar-strip{height:36px;background:var(--bg-soft);border-bottom:1px solid var(--line);overflow:hidden;}
.strip-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px;font-size:14px;color:var(--ink-500);}
.strip-inner i{margin-right:6px;color:var(--brand-500);}
.strip-right{display:flex;align-items:center;gap:20px;}
.strip-right a{color:var(--ink-500);}
.strip-right a:hover{color:var(--brand-600);}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:80;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease);}
body.is-scrolled .site-header{box-shadow:0 4px 16px rgba(16,34,47,.08);}
body.is-scrolled .top-bar-strip{display:none;}

.brand-row{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;transition:height .2s var(--ease);}
body.is-scrolled .brand-row{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;
  box-shadow:0 6px 14px rgba(27,108,176,.28);
}
.logo-text{font-size:20px;font-weight:700;color:var(--brand-600);letter-spacing:.01em;}
.brand:hover .logo-text{color:var(--brand-700);}

.primary-nav{display:flex;align-items:center;justify-content:center;gap:4px;flex:1 1 auto;}
.primary-nav a{position:relative;padding:8px 12px;font-size:15px;font-weight:500;color:var(--ink-700);border-radius:6px;}
.primary-nav a:hover{color:var(--brand-600);background:var(--brand-050);}
.primary-nav a.is-active{color:var(--brand-600);font-weight:600;}
.primary-nav a.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--brand-600);border-radius:2px;}

.brand-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{
  width:38px;height:38px;border-radius:8px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink-700);display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-050);}
.menu-toggle{display:none;width:38px;height:38px;border-radius:8px;border:1px solid var(--line);background:var(--surface);color:var(--ink-700);align-items:center;justify-content:center;}
.menu-toggle:hover{border-color:var(--brand-500);color:var(--brand-600);}

.channel-bar{border-top:1px solid var(--line);background:var(--surface);position:relative;}
.main-nav{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;}
.main-nav::-webkit-scrollbar{height:0;}
.main-nav a{
  scroll-snap-align:start;white-space:nowrap;font-size:14px;font-weight:500;
  color:var(--ink-700);padding:6px 16px;border-radius:999px;border:1px solid transparent;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.main-nav a:hover{background:var(--brand-050);color:var(--brand-600);}
.main-nav a.is-active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;font-weight:600;}

.mobile-menu{display:none;border-top:1px solid var(--line);background:var(--surface);padding:6px 0 12px;}
.mobile-menu a{display:block;padding:13px 20px;font-size:15px;color:var(--ink-700);border-bottom:1px solid var(--line);}
.mobile-menu a:last-child{border-bottom:0;}
.mobile-menu a.is-active{color:var(--brand-600);font-weight:600;background:var(--brand-050);}
.mobile-menu.is-open{display:block;}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--ink-500);padding:16px 0 0;}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb span.sep{color:var(--line-strong);}
.breadcrumb .current{color:var(--ink-700);font-weight:600;}

/* ============ 分类首屏 ============ */
.cat-hero{position:relative;padding:24px 0 44px;overflow:hidden;}
.cat-hero::after{
  content:"";position:absolute;top:-90px;right:-120px;width:360px;height:240px;
  background:var(--brand-050);transform:skewX(-18deg);border-radius:32px;z-index:0;
}
.cat-hero-inner{position:relative;z-index:1;}
.cat-hero h1{font-size:40px;margin-bottom:14px;}
.cat-hero-desc{max-width:640px;color:var(--ink-700);font-size:16px;margin:0;}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.hero-stat{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 16px;box-shadow:var(--shadow-sm);
}
.hero-stat strong{display:block;font-size:24px;color:var(--brand-700);line-height:1.2;}
.hero-stat span{font-size:13px;color:var(--ink-500);}

/* ============ 筛选条 ============ */
.filter-bar{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-sm);margin-bottom:24px;
}
.filter-bar-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:16px;}
.filter-bar-head h2{font-size:22px;}
.sort-box{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-500);}
.sort-box select{
  height:40px;padding:0 34px 0 12px;border-radius:var(--radius-btn);
  border:1px solid var(--line-strong);background-color:var(--surface);color:var(--ink-700);
  font-size:14px;appearance:none;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2364798C'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 8px center;background-size:18px 18px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.sort-box select:hover{border-color:var(--brand-500);}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.chip-btn{
  height:36px;padding:0 16px;border-radius:999px;border:1px solid var(--line-strong);
  background:var(--surface);color:var(--ink-700);font-size:14px;
  display:inline-flex;align-items:center;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.chip-btn:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-050);}
.chip-btn.is-active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;font-weight:600;}
.chip-btn:active{transform:translateY(1px);}

/* ============ 侧栏筛选 ============ */
.filter-side{display:block;}
.filter-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-sm);position:sticky;top:120px;
}
.filter-group + .filter-group{margin-top:22px;padding-top:22px;border-top:1px solid var(--line);}
.filter-group h3{font-size:16px;font-weight:600;margin-bottom:12px;}
.filter-list li{margin-bottom:2px;}
.filter-list label{
  display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-700);
  padding:7px 8px;border-radius:6px;cursor:pointer;transition:background-color .16s var(--ease);
}
.filter-list label:hover{background:var(--bg-soft);}
.filter-list input{width:16px;height:16px;accent-color:var(--brand-600);}
.filter-panel .btn{margin-top:22px;}

.filter-fab{
  position:fixed;right:18px;bottom:22px;z-index:70;display:none;
  align-items:center;gap:8px;height:46px;padding:0 20px;border:0;border-radius:999px;
  background:var(--brand-600);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--shadow-lg);
}
.filter-fab:hover{background:var(--brand-700);}

/* ============ 商品卡 ============ */
.product-card{
  position:relative;display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--line-strong);}
.card-media{position:relative;padding-top:75%;background:var(--bg-soft);overflow:hidden;}
.card-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s var(--ease);}
.product-card:hover .card-media img{transform:scale(1.03);}
.card-hover{
  position:absolute;inset:auto 0 0 0;padding:12px;display:flex;justify-content:center;
  background:linear-gradient(to top,rgba(16,34,47,.55),rgba(16,34,47,0));
  opacity:0;transition:opacity .2s var(--ease);
}
.product-card:hover .card-hover{opacity:1;}
.card-hover span{
  background:rgba(255,255,255,.94);color:var(--brand-700);font-size:13px;font-weight:600;
  border-radius:999px;padding:6px 16px;
}
.card-body{display:flex;flex-direction:column;gap:8px;padding:18px 20px 20px;flex:1 1 auto;}
.card-title{font-size:17px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-title a{color:var(--ink-900);}
.card-title a:hover{color:var(--brand-600);}
.card-point{font-size:13px;color:var(--ink-500);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:0;}
.card-spec{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-500);}
.card-spec span{background:var(--bg-soft);border-radius:6px;padding:2px 8px;}
.card-foot{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);}
.price{display:flex;align-items:baseline;gap:4px;}
.price-num{font-size:19px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;}
.price-unit{font-size:12px;color:var(--ink-500);}

/* ============ 分页 ============ */
.pager{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:36px;}
.pager a{
  min-width:42px;height:42px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:var(--radius-btn);background:var(--surface);
  color:var(--ink-700);font-size:14px;transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.pager a:hover{border-color:var(--brand-500);color:var(--brand-600);}
.pager a.is-current{background:var(--brand-600);border-color:var(--brand-600);color:#fff;font-weight:600;}
.pager .pager-dots{color:var(--ink-500);padding:0 4px;}

/* ============ 选型参考 ============ */
.ref-section{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.ref-media img{width:100%;height:100%;max-height:380px;object-fit:cover;box-shadow:var(--shadow-sm);}
.step-list{counter-reset:step;margin-top:22px;}
.step-list li{display:flex;gap:16px;padding:16px 0;border-top:1px solid var(--line);}
.step-list li:first-child{border-top:0;padding-top:0;}
.step-num{
  flex:0 0 auto;width:36px;height:36px;border-radius:8px;background:var(--brand-050);
  color:var(--brand-600);font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.step-list h3{font-size:16px;font-weight:600;margin-bottom:4px;}
.step-list p{font-size:14px;color:var(--ink-500);margin:0;}

/* ============ 支持说明 ============ */
.support-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.support-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px 20px;box-shadow:var(--shadow-sm);}
.support-item i{font-size:22px;color:var(--brand-600);margin-bottom:12px;display:block;}
.support-item h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.support-item p{font-size:13px;color:var(--ink-500);margin:0;line-height:1.75;}

/* ============ FAQ ============ */
.faq-wrap{background:var(--bg-soft);}
.accordion{border:0;background:transparent;}
.accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);
  margin-bottom:12px;box-shadow:var(--shadow-sm);overflow:hidden;
}
.accordion-title{
  display:flex;align-items:center;min-height:60px;padding:10px 24px;
  font-size:16px;font-weight:600;color:var(--ink-900);border:0;background:transparent;
}
.accordion-title:hover{color:var(--brand-600);}
.accordion-title::before{display:none !important;}
.accordion-title::after{
  content:"+";margin-left:auto;font-size:22px;line-height:1;font-weight:400;
  color:var(--brand-600);transition:transform .2s var(--ease);
}
.accordion-item.is-active .accordion-title::after{transform:rotate(45deg);}
.accordion-content{border:0;padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--ink-700);max-width:72ch;}
.accordion-content p{font-size:14.5px;}

/* ============ CTA 条 ============ */
.cta-bar{background:var(--brand-700);color:#fff;padding:44px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:26px;margin-bottom:8px;}
.cta-inner p{color:rgba(255,255,255,.78);font-size:14px;margin:0;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding:56px 0 0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-desc{font-size:14px;color:var(--ink-500);max-width:340px;line-height:1.8;}
.footer-keyword{font-size:14px;color:var(--brand-600);font-weight:600;margin:14px 0 0;}
.footer-contact{margin-top:16px;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-500);margin-bottom:8px;}
.footer-contact i{color:var(--brand-500);margin-top:5px;}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--ink-900);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--ink-500);}
.footer-col ul a:hover{color:var(--brand-600);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:40px;padding:18px 0 22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-500);
}
.footer-bottom .en{font-size:12px;letter-spacing:.02em;}

/* ============ Reveal 筛选弹层 ============ */
.reveal{border-radius:16px;padding:26px 22px;border:0;box-shadow:var(--shadow-lg);max-width:420px;}
.reveal-title{font-size:18px;margin-bottom:16px;}
.reveal .close-button{color:var(--ink-500);top:14px;right:16px;}

/* ============ 响应式 ============ */
@media screen and (max-width:1199px){
  h1{font-size:34px;}
  .cat-hero h1{font-size:34px;}
  .section-head h2, h2{font-size:26px;}
}

@media screen and (max-width:1023px){
  .primary-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  .brand-row{height:64px;}
  body.is-scrolled .brand-row{height:58px;}
  .channel-bar::after{
    content:"";position:absolute;right:0;top:0;bottom:0;width:28px;pointer-events:none;
    background:linear-gradient(to right,rgba(255,255,255,0),#fff);
  }
  .filter-side{display:none;}
  .filter-fab{display:inline-flex;}
  .filter-panel{position:static;}
  .section{padding:52px 0;}
  .hero-stats{grid-template-columns:repeat(3,1fr);gap:12px;}
  .support-grid{grid-template-columns:repeat(2,1fr);}
  .cat-hero::after{display:none;}
}

@media screen and (max-width:767px){
  h1,.cat-hero h1{font-size:28px;}
  h2,.section-head h2{font-size:22px;}
  h3{font-size:18px;}
  body{font-size:15.5px;line-height:1.75;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .grid-margin-x{margin-left:-8px;margin-right:-8px;}
  .grid-margin-x > .cell{padding-left:8px;padding-right:8px;}
  .strip-right{display:none;}
  .strip-inner{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .section{padding:44px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .hero-stats{grid-template-columns:1fr 1fr;}
  .filter-bar{padding:16px;}
  .card-body{padding:16px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

@media screen and (max-width:519px){
  .hero-stats{grid-template-columns:1fr;}
  .support-grid{grid-template-columns:1fr;}
  .card-foot{flex-direction:column;align-items:stretch;gap:10px;}
  .card-foot .btn{width:100%;}
  .price{justify-content:flex-start;}
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
:root{
  --brand-700:#134E82;
  --brand-600:#1B6CB0;
  --brand-500:#2E86D0;
  --brand-050:#E9F2FA;
  --accent-600:#D98A22;
  --accent-500:#F0A63C;
  --accent-050:#FDF3E3;
  --ink-900:#10222F;
  --ink-700:#33475A;
  --ink-500:#64798C;
  --bg-page:#F5F7FA;
  --bg-soft:#EDF1F6;
  --surface:#FFFFFF;
  --line:#E2E8F0;
  --line-strong:#CFD9E4;
  --ok:#2E9E6B;
  --warn:#D9534F;

  --shadow-card:0 1px 2px rgba(16,34,47,.04), 0 10px 24px rgba(16,34,47,.06);
  --shadow-hover:0 4px 10px rgba(16,34,47,.06), 0 18px 36px rgba(16,34,47,.10);

  --radius-card:12px;
  --radius-btn:8px;
  --radius-input:8px;
  --radius-img:10px;
  --radius-pill:999px;

  --gap:24px;
  --section-y:84px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

/* ========== 基础 reset ========== */
*,*::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:1.8;
  color:var(--ink-700);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:30px;}
h3{font-size:22px;font-weight:600;}
h4{font-size:18px;font-weight:600;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out;}
a:hover{color:var(--brand-700);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}
.en{font-size:12px;letter-spacing:.02em;}

/* ========== 容器 ========== */
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
@media screen and (min-width:1280px){
  .grid-container{max-width:1264px;}
}

/* ========== 通用按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--brand-600);color:#fff;}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(1px);}
.btn-accent{background:var(--accent-500);color:#3A2708;}
.btn-accent:hover{background:var(--accent-600);color:#2A1B05;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-accent:active{transform:translateY(1px);}
.btn-ghost{background:var(--surface);color:var(--ink-700);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;height:auto;padding:0;border:0;background:none;
  color:var(--brand-600);font-weight:600;font-size:14px;cursor:pointer;
}
.btn-text i{transition:transform .18s ease-out;}
.btn-text:hover{color:var(--brand-700);}
.btn-text:hover i{transform:translateX(4px);}

/* ========== 顶部工具条 ========== */
.topbar{background:var(--bg-soft);border-bottom:1px solid var(--line);}
.topbar-inner{
  height:36px;display:flex;align-items:center;justify-content:space-between;
  font-size:14px;color:var(--ink-500);
}
.topbar-inner i{color:var(--brand-500);margin-right:6px;}
.topbar-left,.topbar-right{display:flex;align-items:center;gap:20px;}
.topbar-right a{color:var(--ink-500);}
.topbar-right a:hover{color:var(--brand-600);}

/* ========== 品牌行 ========== */
.brandbar{background:var(--surface);border-bottom:1px solid var(--line);position:relative;z-index:60;}
.brandbar-inner{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  transition:height .2s ease-out;
}
.logo{display:inline-flex;align-items:center;gap:10px;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500));color:#fff;font-size:17px;flex:0 0 auto;
}
.logo-text{font-size:20px;font-weight:700;color:var(--brand-600);letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-700);padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left center;transition:transform .2s ease-out;
}
.main-nav a:hover{color:var(--brand-600);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--brand-600);font-weight:600;}
.main-nav a.is-active::after{transform:scaleX(1);}
.brand-actions{display:flex;align-items:center;gap:14px;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--surface);
  color:var(--ink-700);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:all .18s ease-out;
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-600);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--radius-btn);border:1px solid var(--line-strong);background:var(--surface);color:var(--ink-900);cursor:pointer;align-items:center;justify-content:center;font-size:17px;}
.nav-toggle:hover{border-color:var(--brand-500);color:var(--brand-600);}

/* ========== 频道行 ========== */
.channelbar{
  position:sticky;top:0;z-index:55;background:var(--surface);border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease-out;
}
.channelbar.is-stuck{box-shadow:0 1px 2px rgba(16,34,47,.06);}
.channelbar-inner{height:48px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.channel-nav{
  display:flex;align-items:center;gap:10px;height:100%;
  overflow-x:auto;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;scrollbar-width:none;
}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-link{
  scroll-snap-align:start;flex:0 0 auto;
  display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:var(--radius-pill);
  font-size:14px;color:var(--ink-700);border:1px solid transparent;white-space:nowrap;
  transition:all .18s ease-out;
}
.channel-link:hover{background:var(--brand-050);color:var(--brand-600);}
.channel-link.is-active{background:var(--brand-600);color:#fff;border-color:var(--brand-600);font-weight:600;}
.channel-link.is-active:hover{background:var(--brand-700);color:#fff;}
.channel-hint{font-size:13px;color:var(--ink-500);display:flex;align-items:center;gap:6px;flex:0 0 auto;}

/* ========== 面包屑 ========== */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--ink-500);margin:20px 0 24px;
}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .sep{color:var(--line-strong);}
.breadcrumb .current{color:var(--ink-700);font-weight:600;}

/* ========== 板块通用 ========== */
.section{padding:var(--section-y) 0;}
.section.tight{padding-top:56px;}
.section-soft{background:var(--bg-soft);}
.section-white{background:var(--surface);}
.section-head{margin-bottom:36px;max-width:820px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-600);
  background:var(--brand-050);border-radius:var(--radius-pill);padding:5px 14px;margin-bottom:16px;
}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--ink-500);font-size:15px;margin:0;max-width:74ch;}
.section-head.between{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}

/* ========== 分类导语 Hero ========== */
.hero-scene{padding:40px 0 var(--section-y);background:linear-gradient(180deg,var(--brand-050) 0%,var(--bg-page) 100%);}
.hero-lead{display:flex;flex-direction:column;gap:18px;}
.hero-lead h1{font-size:40px;}
.hero-sub{font-size:19px;font-weight:600;color:var(--brand-700);line-height:1.7;margin:0;}
.hero-text{font-size:16px;color:var(--ink-700);margin:0;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:var(--radius-pill);
  background:var(--surface);border:1px solid var(--line);color:var(--ink-700);font-size:13px;
}
.pill i{color:var(--brand-500);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:8px;}
.hero-figure{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);}
.hero-figure img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius-card);}
.hero-figure figcaption{
  position:absolute;left:16px;right:16px;bottom:16px;background:rgba(255,255,255,.94);
  border-radius:var(--radius-img);padding:12px 14px;font-size:13px;color:var(--ink-700);
  box-shadow:var(--shadow-card);
}
.hero-figure figcaption strong{color:var(--brand-700);}

/* ========== 交替图文段 ========== */
.alt-block{display:flex;flex-direction:column;gap:24px;margin-bottom:64px;}
.alt-block:last-child{margin-bottom:0;}
.alt-figure{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);}
.alt-figure img{width:100%;height:100%;min-height:260px;object-fit:cover;border-radius:var(--radius-card);}
.alt-body h2{margin-bottom:16px;}
.alt-body p{font-size:16px;}
.point-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.point-list li{
  display:flex;gap:12px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:14px 16px;font-size:15px;color:var(--ink-700);
  box-shadow:0 1px 2px rgba(16,34,47,.04);
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.point-list li:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);}
.point-list i{color:var(--brand-500);margin-top:5px;flex:0 0 auto;}

/* ========== 参数对照表 ========== */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);box-shadow:var(--shadow-card);}
table.spec-table{width:100%;min-width:720px;border-collapse:collapse;}
table.spec-table caption{
  caption-side:top;text-align:left;padding:18px 20px 12px;font-size:15px;font-weight:600;color:var(--ink-900);
}
table.spec-table th,table.spec-table td{padding:12px 16px;font-size:14.5px;text-align:left;vertical-align:top;}
table.spec-table thead th{
  background:var(--brand-050);color:var(--brand-600);font-weight:600;font-size:14px;
  border-bottom:1px solid var(--line);
}
table.spec-table tbody tr:nth-child(even){background:var(--bg-soft);}
table.spec-table tbody td{border-bottom:1px solid var(--line);color:var(--ink-700);}
table.spec-table tbody tr:last-child td{border-bottom:0;}
table.spec-table td.num{font-variant-numeric:tabular-nums;font-weight:600;color:var(--ink-900);}
.table-note{font-size:13px;color:var(--ink-500);margin-top:12px;}

/* ========== 流程时间线 ========== */
.timeline{display:grid;grid-template-columns:1fr;gap:24px;counter-reset:step;}
.timeline-item{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px 22px;box-shadow:var(--shadow-card);
  transition:box-shadow .18s ease-out,transform .18s ease-out;
}
.timeline-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.timeline-num{
  width:32px;height:32px;border-radius:50%;background:var(--brand-600);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;
  font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.timeline-item h4{margin-bottom:8px;}
.timeline-item p{font-size:14.5px;color:var(--ink-500);margin:0;}

/* ========== 案例卡 ========== */
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);height:100%;display:flex;flex-direction:column;
  transition:box-shadow .18s ease-out,transform .18s ease-out;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.case-card figure{margin:0;overflow:hidden;border-radius:var(--radius-card) var(--radius-card) 0 0;}
.case-card figure img{width:100%;height:220px;object-fit:cover;transition:transform .22s ease-out;}
.case-card:hover figure img{transform:scale(1.03);}
.case-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.case-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:500;
}
.tag-brand{background:var(--brand-050);color:var(--brand-600);}
.tag-accent{background:var(--accent-050);color:var(--accent-600);}
.case-body h3{font-size:18px;}
.case-body p{font-size:14.5px;color:var(--ink-500);margin:0;}
.case-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-500);display:flex;flex-wrap:wrap;gap:16px;
}
.case-meta span{display:inline-flex;align-items:center;gap:6px;}
.case-meta i{color:var(--brand-500);}

/* ========== FAQ ========== */
.faq-wrap{max-width:900px;}
.accordion{border:0;background:transparent;}
.accordion .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);margin-bottom:14px;overflow:hidden;
  transition:box-shadow .18s ease-out,border-color .18s ease-out;
}
.accordion .accordion-item:hover{box-shadow:var(--shadow-hover);border-color:var(--line-strong);}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:14px 22px;font-size:16px;font-weight:600;color:var(--ink-900);
  background:transparent;border:0;border-bottom:1px solid transparent;
}
.accordion .accordion-title:hover,
.accordion .accordion-title:focus{background:var(--brand-050);color:var(--brand-700);}
.accordion .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  order:2;font-size:13px;color:var(--brand-500);transition:transform .2s ease-out;margin:0;
}
.accordion .accordion-item.is-active .accordion-title::before{transform:rotate(45deg);}
.accordion .accordion-item.is-active .accordion-title{border-bottom-color:var(--line);color:var(--brand-700);}
.accordion .accordion-content{
  padding:16px 22px 20px;border:0;background:var(--surface);color:var(--ink-700);font-size:14.5px;
}
.accordion .accordion-content p{max-width:72ch;margin:0;}

/* ========== CTA 条 ========== */
.cta-bar{background:var(--brand-700);color:#fff;padding:34px 0;}
.cta-inner{display:flex;flex-direction:column;gap:20px;align-items:flex-start;}
.cta-text h3{color:#fff;font-size:22px;margin-bottom:8px;}
.cta-text p{color:rgba(255,255,255,.78);font-size:14.5px;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ========== 表单卡 ========== */
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-card);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;color:var(--ink-700);margin-bottom:8px;font-weight:500;}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--line-strong);border-radius:var(--radius-input);
  background:var(--surface);color:var(--ink-900);font-size:15px;transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-050);
}
.field .hint{font-size:13px;color:var(--ink-500);margin-top:6px;}
.form-note{font-size:13px;color:var(--ink-500);margin-top:14px;}

/* ========== 页脚 ========== */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding:56px 0 0;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-desc{font-size:14.5px;color:var(--ink-500);max-width:44ch;margin-bottom:14px;}
.footer-keyword{font-size:14px;color:var(--brand-600);font-weight:600;margin-bottom:18px;}
.footer-contact{display:flex;flex-direction:column;gap:10px;}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-500);}
.footer-contact i{color:var(--brand-500);width:16px;text-align:center;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink-900);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-500);}
.footer-col a:hover{color:var(--brand-600);}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--ink-500);
}

/* ========== 响应式 ========== */
@media screen and (max-width:1023px){
  :root{--section-y:64px;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .hero-lead h1{font-size:32px;}
  .hero-sub{font-size:17px;}
  .section-head.between{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:1023px){
  .main-nav,.brand-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .brandbar-inner{height:64px;}
  .brandbar.is-open .main-nav{
    display:flex;flex-direction:column;align-items:flex-start;gap:0;
    position:absolute;left:0;right:0;top:100%;background:var(--surface);
    border-bottom:1px solid var(--line);box-shadow:var(--shadow-card);padding:8px 24px 16px;
  }
  .brandbar.is-open .main-nav a{width:100%;padding:12px 0;border-bottom:1px solid var(--line);}
  .brandbar.is-open .main-nav a:last-child{border-bottom:0;}
  .brandbar.is-open .main-nav a::after{display:none;}
}
@media screen and (max-width:639px){
  :root{--section-y:48px;--gap:16px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  h1,.hero-lead h1{font-size:28px;}
  h2{font-size:22px;}
  body{font-size:15.5px;}
  .topbar-right{display:none;}
  .topbar-inner{justify-content:flex-start;}
  .channel-hint{display:none;}
  .hero-scene{padding-top:24px;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .case-card figure img{height:190px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category3 */
:root{
  --brand-700:#134E82;
  --brand-600:#1B6CB0;
  --brand-500:#2E86D0;
  --brand-050:#E9F2FA;
  --accent-600:#D98A22;
  --accent-500:#F0A63C;
  --accent-050:#FDF3E3;
  --ink-900:#10222F;
  --ink-700:#33475A;
  --ink-500:#64798C;
  --bg-page:#F5F7FA;
  --bg-soft:#EDF1F6;
  --surface:#FFFFFF;
  --line:#E2E8F0;
  --line-strong:#CFD9E4;
  --ok:#2E9E6B;
  --warn:#D9534F;
  --radius-card:12px;
  --radius-btn:8px;
  --radius-input:8px;
  --radius-badge:999px;
  --radius-img:10px;
  --shadow-card:0 1px 2px rgba(16,34,47,.04), 0 10px 24px rgba(16,34,47,.06);
  --shadow-card-hover:0 4px 10px rgba(16,34,47,.06), 0 18px 36px rgba(16,34,47,.10);
  --shadow-float:0 6px 14px rgba(16,34,47,.08), 0 22px 44px rgba(16,34,47,.14);
  --gap:24px;
  --section-y:80px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-img);}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--brand-700);}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;}

/* 容器 */
.grid-container{max-width:1200px;padding-left:20px;padding-right:20px;}
@media screen and (min-width:1200px){
  .grid-container{max-width:1280px;}
}
.section{padding:var(--section-y) 0;}
.section--tight{padding:56px 0;}
.section--soft{background:var(--bg-soft);}
.section--white{background:var(--surface);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
.section-title{font-size:30px;font-weight:700;letter-spacing:.01em;}
.section-sub{margin-top:10px;font-size:15px;color:var(--ink-500);max-width:64ch;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.02em;color:var(--brand-600);
  background:var(--brand-050);border-radius:var(--radius-badge);
  padding:4px 12px;margin-bottom:14px;font-weight:600;
}
.link-more{font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;}
.link-more i{transition:transform .18s ease-out;}
.link-more:hover i{transform:translateX(4px);}

/* 顶部工具条 */
.topbar{height:36px;background:var(--bg-soft);border-bottom:1px solid var(--line);}
.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:14px;color:var(--ink-500);}
.topbar-left{display:flex;align-items:center;gap:18px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-left i{color:var(--brand-500);margin-right:6px;}
.topbar-right{display:flex;align-items:center;gap:18px;white-space:nowrap;}
.topbar-right a{color:var(--ink-500);}
.topbar-right a:hover{color:var(--brand-600);}

/* 品牌行导航 */
.brandbar{background:var(--surface);border-bottom:1px solid var(--line);position:relative;z-index:40;}
.brandbar-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand-logo{display:inline-flex;align-items:center;gap:10px;}
.logo-mark{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500));color:#fff;font-size:17px;
  box-shadow:0 6px 14px rgba(27,108,176,.28);
}
.logo-text{font-size:20px;font-weight:700;color:var(--brand-600);letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;display:inline-block;padding:8px 14px;font-size:15px;color:var(--ink-700);border-radius:var(--radius-btn);
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--brand-600);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;border-radius:2px;
}
.main-nav a:hover{color:var(--brand-600);background:var(--brand-050);}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--brand-600);font-weight:600;}
.brand-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:42px;height:42px;border-radius:var(--radius-btn);border:1px solid var(--line-strong);background:var(--surface);
  color:var(--ink-700);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:all .18s ease-out;
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-050);}
.nav-toggle{display:none;}

/* 按钮体系 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .18s ease-out;white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--brand-600);color:#fff;border-color:var(--brand-600);}
.btn-primary:hover{background:#185f9b;color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(27,108,176,.26);}
.btn-trade{background:var(--accent-500);color:#3a2404;border-color:var(--accent-500);}
.btn-trade:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(217,138,34,.28);}
.btn-ghost{background:var(--surface);color:var(--ink-700);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-050);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}

/* 频道行导航 */
.channelbar{
  background:var(--surface);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:60;transition:box-shadow .2s ease-out;
}
.channelbar.is-stuck{box-shadow:0 1px 2px rgba(16,34,47,.06);}
.channel-inner{
  height:48px;display:flex;align-items:center;gap:8px;overflow-x:auto;scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;scrollbar-width:none;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-link{
  flex:0 0 auto;scroll-snap-align:start;
  display:inline-flex;align-items:center;gap:6px;
  height:32px;padding:0 16px;border-radius:var(--radius-badge);
  font-size:14px;color:var(--ink-700);background:var(--bg-soft);
  transition:all .18s ease-out;
}
.channel-link:hover{background:var(--brand-050);color:var(--brand-600);}
.channel-link.is-active{background:var(--brand-600);color:#fff;font-weight:600;}
.channel-link.is-active:hover{background:var(--brand-700);color:#fff;}

/* 面包屑 */
.crumb{font-size:14px;color:var(--ink-500);padding-top:16px;padding-bottom:0;}
.crumb a{color:var(--ink-500);}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{margin:0 6px;color:var(--line-strong);}
.crumb .current{color:var(--ink-700);font-weight:600;}

/* 页面窄横幅 */
.page-banner{
  position:relative;margin-top:16px;border-radius:var(--radius-card);overflow:hidden;
  min-height:240px;display:flex;align-items:center;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(19,78,130,.82) 0%,rgba(19,78,130,.58) 55%,rgba(19,78,130,.34) 100%);
}
.page-banner-content{position:relative;z-index:2;padding:44px 40px;max-width:760px;}
.page-banner .banner-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.02em;
  color:#dbeaf7;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  border-radius:var(--radius-badge);padding:5px 12px;margin-bottom:16px;
}
.page-banner h1{color:#fff;font-size:40px;font-weight:700;letter-spacing:.01em;}
.page-banner p{color:#e1ecf6;font-size:16px;margin-top:14px;max-width:62ch;}

/* 权益错落卡 */
.benefit-col{display:flex;flex-direction:column;gap:24px;}
.benefit-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-card);transition:all .2s ease-out;height:100%;
}
.benefit-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-4px);}
.benefit-card.tall{min-height:302px;}
.benefit-card.short{min-height:222px;}
.benefit-icon{
  width:46px;height:46px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-050);color:var(--brand-600);font-size:19px;margin-bottom:16px;
}
.benefit-icon.accent{background:var(--accent-050);color:var(--accent-600);}
.benefit-card h3{font-size:22px;font-weight:600;margin-bottom:10px;}
.benefit-card p{font-size:15px;color:var(--ink-700);}
.benefit-list{margin-top:16px;border-top:1px dashed var(--line);padding-top:14px;}
.benefit-list li{
  position:relative;padding-left:16px;font-size:14px;color:var(--ink-500);line-height:1.9;
}
.benefit-list li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;background:var(--brand-500);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;
  border-radius:var(--radius-badge);padding:4px 12px;line-height:1.6;
}
.badge-brand{background:var(--brand-050);color:var(--brand-600);}
.badge-accent{background:var(--accent-050);color:var(--accent-600);}
.benefit-card .badge{margin-bottom:14px;}

/* 服务流程 */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.flow-step{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 20px;box-shadow:var(--shadow-card);transition:all .2s ease-out;
}
.flow-step:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-4px);}
.flow-index{
  width:32px;height:32px;border-radius:50%;background:var(--brand-600);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.flow-step h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.flow-step p{font-size:14px;color:var(--ink-500);line-height:1.8;}
.flow-arrow{
  position:absolute;top:50%;right:-18px;transform:translateY(-50%);
  width:22px;height:22px;border-radius:50%;background:var(--brand-050);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:10px;z-index:3;
}
.flow-step:last-child .flow-arrow{display:none;}

/* 指标块 */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.metric-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 20px;text-align:center;box-shadow:var(--shadow-card);
}
.metric-value{font-size:30px;font-weight:700;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1.2;}
.metric-value small{font-size:15px;font-weight:600;margin-left:2px;}
.metric-label{margin-top:8px;font-size:14px;color:var(--ink-500);}

/* FAQ */
.faq-wrap{max-width:960px;margin:0 auto;}
.faq-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
  padding:6px 20px;
}
.faq-card .accordion{border:0;background:transparent;margin:0;}
.faq-card .accordion-item{border:0;border-bottom:1px solid var(--line);}
.faq-card .accordion-item:last-child{border-bottom:0;}
.faq-card .accordion-title{
  border:0;background:transparent;padding:0 40px 0 0;min-height:60px;display:flex;align-items:center;
  font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;border-bottom:0;
  transition:color .18s ease-out;
}
.faq-card .accordion-title:hover,.faq-card .accordion-title:focus{background:transparent;color:var(--brand-600);}
.faq-card .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:0;top:50%;transform:translateY(-50%);
  color:var(--brand-600);font-size:14px;margin:0;transition:transform .2s ease-out;
}
.faq-card .accordion-item.is-active>.accordion-title::before{transform:translateY(-50%) rotate(45deg);}
.faq-card .accordion-content{
  border:0;background:transparent;padding:0 40px 20px 0;margin:0;font-size:15px;color:var(--ink-700);
  max-width:72ch;line-height:1.85;
}
.faq-card .accordion-content p{padding-top:13px;}

/* 表单卡 */
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 24px;box-shadow:var(--shadow-card);
}
.form-side-img{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);height:100%;}
.form-side-img img{height:100%;width:100%;object-fit:cover;border-radius:var(--radius-card);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;color:var(--ink-700);font-weight:600;margin-bottom:8px;}
.field label .req{color:var(--warn);margin-left:4px;}
.field input,.field textarea{
  width:100%;height:44px;border:1px solid var(--line-strong);border-radius:var(--radius-input);
  background:var(--surface);padding:0 14px;color:var(--ink-900);font-size:15px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field textarea{height:104px;padding:12px 14px;line-height:1.75;resize:vertical;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-050);
}
.field .tip{font-size:13px;color:var(--ink-500);margin-top:6px;}
.privacy-note{font-size:13px;color:var(--ink-500);margin-top:14px;line-height:1.8;}

/* CTA 条 */
.cta-strip{background:var(--brand-700);padding:32px 0;}
.cta-strip-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;}
.cta-strip h2{color:#fff;font-size:22px;font-weight:700;}
.cta-strip p{color:#c8dcee;font-size:14px;margin-top:8px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* 页脚 */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding:56px 0 0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-desc{font-size:14px;color:var(--ink-500);line-height:1.85;max-width:44ch;}
.footer-keyword{
  display:inline-block;margin-top:14px;font-size:13px;color:var(--brand-600);
  background:var(--brand-050);border-radius:var(--radius-badge);padding:5px 12px;
}
.footer-contact{margin-top:18px;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-500);line-height:1.9;}
.footer-contact i{color:var(--brand-500);margin-top:6px;}
.footer-col h4{font-size:16px;font-weight:600;color:var(--ink-900);margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--ink-500);}
.footer-col ul a:hover{color:var(--brand-600);}
.footer-bottom{
  margin-top:44px;border-top:1px solid var(--line);padding:20px 0;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--ink-500);
}
.footer-bottom .en{font-size:12px;letter-spacing:.02em;color:var(--ink-500);}

/* 响应式 */
@media screen and (max-width:1023px){
  :root{--section-y:56px;}
  .section-title{font-size:22px;}
  .page-banner h1{font-size:28px;}
  .page-banner{min-height:200px;}
  .page-banner-content{padding:32px 24px;}
  .topbar-right{display:none;}
  .brandbar-inner{height:64px;}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;background:var(--surface);
    border-bottom:1px solid var(--line);box-shadow:var(--shadow-card);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 16px 14px;
    display:none;
  }
  .brandbar.nav-open .main-nav{display:flex;}
  .main-nav a{padding:12px 8px;border-radius:var(--radius-btn);border-bottom:1px solid var(--line);}
  .main-nav a:last-child{border-bottom:0;}
  .main-nav a::after{display:none;}
  .main-nav a.is-active{background:var(--brand-050);}
  .nav-toggle{display:inline-flex;}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .flow-arrow{display:none;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
}
@media screen and (max-width:767px){
  body{font-size:15.5px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:24px;}
  .page-banner h1{font-size:24px;}
  .benefit-card h3{font-size:18px;}
  .benefit-card.tall,.benefit-card.short{min-height:0;}
  .flow-grid{grid-template-columns:1fr;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .cta-strip-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-bottom{flex-direction:column;}
}
@media screen and (max-width:519px){
  .brand-actions .icon-btn.search-btn{display:none;}
  .brand-actions .btn-primary{padding:0 16px;font-size:14px;}
  .metric-grid{grid-template-columns:1fr;}
  .form-card{padding:22px 18px;}
}