/* roulang page: index */
:root{
  --brand-600:#1A5FD0;
  --brand-700:#144BA8;
  --brand-050:#EEF4FF;
  --accent:#FF6A3D;
  --accent-050:#FFF0EA;
  --support:#12B886;
  --ink-900:#0F1B2D;
  --ink-600:#44546B;
  --ink-400:#8595AB;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E4EAF4;
  --footer-bg:#0D2A4A;
  --footer-text:#C7D6EA;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-1:0 2px 8px rgba(19,48,102,.05);
  --shadow-2:0 8px 24px rgba(19,48,102,.08);
  --shadow-3:0 16px 40px rgba(19,48,102,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color 220ms var(--ease),background-color 220ms var(--ease),border-color 220ms var(--ease);}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:800;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(26,95,208,.35);outline-offset:2px;border-radius:8px;}
.container{max-width:1240px;padding-left:32px;padding-right:32px;margin:0 auto;width:100%;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.sec-title{position:relative;padding-left:14px;font-size:clamp(24px,2.8vw,32px);line-height:1.3;}
.sec-title::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;background:var(--brand-600);}
.sec-desc{margin-top:10px;color:var(--ink-400);font-size:14.5px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;white-space:nowrap;}
.text-link svg{transition:transform 220ms var(--ease),stroke 220ms var(--ease);}
.text-link:hover svg{transform:translateX(3px);stroke:var(--accent);}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:80;padding:16px 0;background:var(--bg);}
.nav-card{
  display:flex;align-items:center;gap:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow-2);padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;background:var(--brand-050);
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(26,95,208,.16);
}
.brand-text{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:0;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px;flex:1 1 auto;}
.nav-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:10px 13px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;color:var(--ink-600);
  transition:all 220ms var(--ease);
}
.nav-chip svg{stroke:var(--ink-400);transition:stroke 220ms var(--ease);}
.nav-chip:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px);}
.nav-chip:hover svg{stroke:var(--brand-600);}
.nav-chip.active{background:var(--brand-600);color:#fff;}
.nav-chip.active svg{stroke:#fff;}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto;}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--surface);
  display:inline-flex;align-items:center;justify-content:center;
  transition:all 220ms var(--ease);cursor:pointer;
}
.icon-btn svg{stroke:var(--ink-600);}
.icon-btn:hover{background:var(--brand-050);border-color:rgba(26,95,208,.3);}
.icon-btn:hover svg{stroke:var(--brand-600);}
.menu-btn{display:none;}

/* 按钮 */
.btn-accent,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15.5px;font-weight:700;border:1.5px solid transparent;
  transition:all 220ms var(--ease);cursor:pointer;white-space:nowrap;
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 12px rgba(255,106,61,.22);}
.btn-accent:hover{background:#F05428;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-accent:active{transform:translateY(0);}
.btn-accent:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(255,106,61,.35);}
.btn-ghost{background:var(--surface);color:var(--brand-600);border-color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-700);border-color:var(--brand-700);}
.btn-line{background:var(--surface);color:var(--ink-600);border-color:var(--line);}
.btn-line:hover{background:var(--brand-050);color:var(--brand-700);border-color:rgba(26,95,208,.3);}
.btn-sm{height:42px;padding:0 18px;font-size:14.5px;}

/* Hero */
.hero{padding:56px 0 88px;position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;right:-140px;top:-160px;width:640px;height:640px;
  background:radial-gradient(circle,rgba(238,244,255,.95) 0%,rgba(238,244,255,0) 68%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:220px;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.14;pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  padding:7px 14px;font-size:13px;font-weight:700;color:var(--brand-600);box-shadow:var(--shadow-1);
}
.hero h1{margin-top:20px;font-size:clamp(30px,4.2vw,46px);line-height:1.25;}
.hero-sub{margin-top:18px;font-size:17.5px;color:var(--ink-600);max-width:560px;}
.hero-cta{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap;}
.trust-row{margin-top:34px;display:flex;gap:12px;flex-wrap:wrap;}
.trust-item{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  padding:9px 15px;font-size:13.5px;font-weight:600;color:var(--ink-600);box-shadow:var(--shadow-1);
}
.trust-item svg{stroke:var(--support);}

.hero-visual{position:relative;display:flex;justify-content:center;min-height:520px;align-items:center;}
.phone-card{
  position:relative;width:340px;aspect-ratio:9/16;border-radius:24px;overflow:hidden;
  box-shadow:var(--shadow-3);border:1px solid var(--line);z-index:3;background:#0D2A4A;
}
.phone-card img{width:100%;height:100%;object-fit:cover;object-position:center 30%;}
.phone-bar{
  position:absolute;left:12px;right:12px;bottom:12px;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  background:rgba(13,42,74,.82);border-radius:14px;padding:10px 12px;
}
.phone-bar span{color:#fff;font-size:14px;font-weight:700;}
.play-dot{
  width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.92);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.phone-side{
  position:absolute;width:270px;aspect-ratio:9/16;border-radius:22px;overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-2);background:#fff;
}
.phone-side img{width:100%;height:100%;object-fit:cover;}
.side-left{left:0;transform:rotate(-6deg) scale(.9);opacity:.72;z-index:2;}
.side-right{right:0;transform:rotate(5deg) scale(.8);opacity:.5;z-index:1;}

/* 片段速览 */
.clip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.clip-card{
  position:relative;display:block;aspect-ratio:9/16;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-1);background:#0D2A4A;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.clip-card img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.clip-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-3);border-color:rgba(26,95,208,.3);}
.clip-card:hover img{transform:scale(1.04);}
.clip-tag{
  position:absolute;top:12px;left:12px;z-index:3;
  background:var(--accent-050);color:var(--accent);
  font-size:11px;font-weight:700;padding:5px 10px;border-radius:999px;
}
.clip-body{
  position:absolute;left:0;right:0;bottom:0;z-index:3;padding:56px 14px 14px;
  background:linear-gradient(180deg,rgba(13,42,74,0) 0%,rgba(13,42,74,.88) 62%);
}
.clip-body h3{color:#fff;font-size:16.5px;line-height:1.45;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clip-meta{margin-top:8px;display:flex;align-items:center;justify-content:space-between;gap:8px;}
.clip-meta span{color:rgba(255,255,255,.78);font-size:13px;}
.clip-play{
  width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.9);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
  transition:background-color 220ms var(--ease);
}
.clip-play svg{stroke:var(--brand-600);transition:stroke 220ms var(--ease);}
.clip-card:hover .clip-play{background:var(--accent);}
.clip-card:hover .clip-play svg{stroke:#fff;}

/* 种草清单 */
.pick-layout{display:grid;grid-template-columns:8fr 4fr;gap:40px;align-items:start;}
.pick-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);padding:8px 28px;}
.pick-item{
  display:flex;align-items:flex-start;gap:18px;padding:22px 0;
  border-bottom:1px dashed var(--line);transition:background-color 220ms var(--ease);
}
.pick-item:last-child{border-bottom:0;}
.pick-item:hover{background:var(--brand-050);}
.pick-idx{
  width:32px;height:32px;flex:0 0 auto;border-radius:50%;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
  transition:transform 220ms var(--ease);
}
.pick-item:hover .pick-idx{transform:scale(1.06);}
.pick-main{flex:1 1 auto;}
.pick-main h3{font-size:17px;font-weight:700;line-height:1.45;}
.pick-main p{margin-top:6px;font-size:14.5px;color:var(--ink-600);}
.pick-side{position:sticky;top:120px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-2);padding:16px;
}
.side-card .side-img{width:100%;aspect-ratio:9/16;border-radius:var(--r-md);object-fit:cover;}
.side-card h3{margin-top:14px;font-size:16.5px;line-height:1.5;}
.side-card p{margin-top:8px;font-size:14px;color:var(--ink-400);}
.side-card .btn-accent{width:100%;margin-top:16px;}

/* 最新信息 */
.news-layout{display:grid;grid-template-columns:1.55fr 1fr;gap:24px;align-items:start;}
.news-feature{
  display:flex;gap:0;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:rgba(26,95,208,.3);}
.nf-cover{flex:0 0 42%;background:#E9EFF9;}
.nf-cover img{width:100%;height:100%;object-fit:cover;}
.nf-body{padding:28px;display:flex;flex-direction:column;gap:12px;}
.nf-body h3{font-size:21px;line-height:1.45;}
.nf-body p{font-size:15px;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-feature:hover h3{color:var(--brand-600);}
.news-list{display:flex;flex-direction:column;gap:14px;}
.news-item{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 20px;box-shadow:var(--shadow-1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(26,95,208,.3);}
.news-item h3{font-size:16.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item:hover h3{color:var(--brand-600);}
.news-item p{margin-top:6px;font-size:14px;color:var(--ink-400);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.meta-row{margin-top:12px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--ink-400);}
.tag-pill{display:inline-flex;align-items:center;background:var(--brand-050);color:var(--brand-600);font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;}
.meta-time{display:inline-flex;align-items:center;gap:6px;}
.meta-time svg{stroke:var(--ink-400);}
.empty-state{
  grid-column:1/-1;background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-lg);
  padding:64px 24px;text-align:center;
}
.empty-state svg{margin:0 auto 16px;stroke:var(--ink-400);}
.empty-state p{color:var(--ink-400);font-size:15px;margin-bottom:18px;}

/* 口碑 */
.voice-wrap{background:var(--brand-050);border-radius:24px;padding:32px;}
.voice-track{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:6px;}
.voice-track::-webkit-scrollbar{height:0;}
.voice-card{
  flex:0 0 280px;scroll-snap-align:start;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--shadow-1);padding:20px;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.voice-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.voice-head{display:flex;align-items:center;gap:10px;}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--brand-600);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;flex:0 0 auto;
}
.voice-name{font-size:15px;font-weight:700;color:var(--ink-900);}
.badge-ok{
  display:inline-flex;align-items:center;gap:4px;background:rgba(18,184,134,.12);color:var(--support);
  font-size:11.5px;font-weight:700;padding:3px 9px;border-radius:999px;
}
.stars{margin-top:12px;display:flex;gap:3px;}
.stars svg{fill:var(--accent);stroke:none;}
.voice-card p{margin-top:10px;font-size:14.5px;line-height:1.7;color:var(--ink-600);}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-1);overflow:hidden;transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);}
.faq-item.open{border-color:rgba(26,95,208,.3);box-shadow:var(--shadow-2);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:700;color:var(--ink-900);cursor:pointer;
}
.faq-q .sign{flex:0 0 auto;width:22px;height:22px;position:relative;}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:2px;transition:transform 220ms var(--ease),opacity 220ms var(--ease);
}
.faq-q .sign::before{left:0;right:0;top:10px;height:2px;}
.faq-q .sign::after{top:0;bottom:0;left:10px;width:2px;}
.faq-item.open .faq-q .sign::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease);}
.faq-a-inner{padding:0 24px 20px 24px;font-size:15.5px;line-height:1.8;color:var(--ink-600);border-left:4px solid transparent;transition:border-color 220ms var(--ease);}
.faq-item.open .faq-a-inner{border-left-color:var(--accent);}

/* 转化区 */
.cta-card{
  background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-2);
  padding:40px;display:grid;grid-template-columns:60fr 40fr;gap:32px;align-items:center;
}
.cta-card h2{font-size:clamp(24px,2.8vw,30px);line-height:1.3;}
.cta-card p{margin-top:12px;font-size:15.5px;color:var(--ink-600);}
.cta-actions{display:flex;gap:14px;justify-content:flex-end;flex-wrap:wrap;}

/* 页脚 */
.site-footer{background:var(--footer-bg);color:var(--footer-text);margin-top:96px;padding:64px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.14);}
.footer-brand .brand-text{color:#fff;}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:var(--footer-text);}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:var(--footer-text);font-size:14px;display:inline-block;transition:color 220ms var(--ease),transform 220ms var(--ease);}
.footer-links a:hover{color:var(--accent);transform:translateX(2px);}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;}
.footer-contact div{display:flex;align-items:center;gap:8px;}
.footer-contact svg{stroke:var(--footer-text);flex:0 0 auto;}
.footer-bottom{
  margin-top:40px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#8595AB;
}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:120;background:var(--surface);
  border-radius:24px 24px 0 0;padding:26px 20px 24px;display:none;flex-direction:column;overflow-y:auto;
}
.mobile-drawer.show{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-grid{margin-top:24px;display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.drawer-chip{
  height:72px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--ink-600);transition:all 220ms var(--ease);
}
.drawer-chip svg{stroke:var(--ink-400);}
.drawer-chip.active{background:var(--brand-600);color:#fff;border-color:var(--brand-600);}
.drawer-chip.active svg{stroke:#fff;}
.drawer-cta{margin-top:auto;padding-top:24px;}
.drawer-cta .btn-accent{width:100%;}

/* 移动端底部转化条 */
.sticky-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:100;
  background:var(--surface);border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(19,48,102,.08);
  height:64px;align-items:center;justify-content:space-between;gap:12px;padding:0 16px;
}
.sticky-bar span{font-size:13.5px;color:var(--ink-600);}
.sticky-bar .btn-accent{height:42px;padding:0 18px;font-size:14.5px;}

@media (max-width:1199px){
  .container{padding-left:24px;padding-right:24px;}
  .hero-grid{gap:36px;}
  .phone-card{width:300px;}
  .nav-chip{padding:9px 11px;font-size:14.5px;}
  .pick-layout{gap:28px;}
  .footer-grid{gap:28px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .nav-links{display:none;}
  .menu-btn{display:inline-flex;}
  .nav-actions .btn-accent{display:none;}
  .hero{padding:36px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-visual{min-height:auto;}
  .clip-grid{grid-template-columns:repeat(2,1fr);}
  .pick-layout{grid-template-columns:1fr;}
  .pick-side{position:static;}
  .news-layout{grid-template-columns:1fr;}
  .news-feature{flex-direction:column;}
  .nf-cover{flex:none;aspect-ratio:16/10;}
  .cta-card{grid-template-columns:1fr;padding:32px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .site-footer{padding-bottom:96px;}
  .sticky-bar{display:flex;}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .hero h1{font-size:clamp(28px,8vw,34px);}
  .hero-sub{font-size:16px;}
  .hero-cta .btn-accent,.hero-cta .btn-ghost{width:100%;}
  .side-left,.side-right{display:none;}
  .phone-card{width:62vw;max-width:300px;}
  .clip-grid{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;padding-bottom:8px;}
  .clip-grid>*{flex:0 0 62vw;scroll-snap-align:start;}
  .clip-grid::-webkit-scrollbar{display:none;}
  .pick-list{padding:4px 18px;}
  .pick-item{flex-direction:column;gap:12px;}
  .voice-wrap{padding:20px;border-radius:18px;}
  .cta-actions .btn-accent,.cta-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
}

/* roulang page: article */
:root{
  --brand-600:#1A5FD0;
  --brand-700:#144BA8;
  --brand-050:#EEF4FF;
  --accent:#FF6A3D;
  --accent-050:#FFF0EA;
  --support:#12B886;
  --ink-900:#0F1B2D;
  --ink-600:#44546B;
  --ink-400:#8595AB;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E4EAF4;
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-btn:12px;
  --sh-1:0 2px 8px rgba(19,48,102,.05);
  --sh-2:0 8px 24px rgba(19,48,102,.08);
  --sh-3:0 16px 40px rgba(19,48,102,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:220ms;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink-600);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0}
img{max-width:100%;display:block}
button{font-family:inherit}
a{color:var(--brand-600);text-decoration:none;transition:color var(--t) var(--ease)}
a:hover{color:var(--brand-700)}
svg{flex:0 0 auto}
:focus-visible{outline:none}

.container,
.container-fluid{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:16px 0 0;
  background:linear-gradient(180deg,#F6F8FC 78%,rgba(246,248,252,0));
}
.nav-card{
  display:flex;
  align-items:center;
  gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--sh-2);
  padding:10px 14px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:40px;height:40px;
  border-radius:12px;
  background:var(--brand-050);
  display:grid;place-items:center;
}
.brand-text{
  font-size:17px;
  font-weight:800;
  color:var(--ink-900);
  line-height:1.2;
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  border-radius:12px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-600);
  white-space:nowrap;
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease);
}
.nav-chip svg{stroke:currentColor}
.nav-chip:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px)}
.nav-chip.active{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(26,95,208,.24)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--brand-600);
  display:grid;place-items:center;
  cursor:pointer;
  transition:background-color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease);
}
.icon-btn svg{stroke:currentColor}
.icon-btn:hover{background:var(--brand-050);border-color:rgba(26,95,208,.35);transform:translateY(-1px)}
.icon-btn[aria-pressed="true"]{background:var(--brand-050);border-color:rgba(26,95,208,.45);color:var(--brand-700)}
.nav-toggle{display:none}

.nav-search{
  display:flex;
  gap:10px;
  margin-top:10px;
  padding:10px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--sh-1);
}
.nav-search input{
  flex:1;
  height:44px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:12px;
  font-size:15px;
  color:var(--ink-900);
  background:#fff;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.nav-search input::placeholder{color:var(--ink-400)}
.nav-search input:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(26,95,208,.12);outline:none}

/* ---------- Buttons ---------- */
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border:none;
  border-radius:var(--r-btn);
  background:var(--accent);
  color:#fff;
  font-size:16px;
  font-weight:700;
  cursor:pointer;
  transition:background-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.btn-main:hover{background:#F2592C;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-main:active{transform:translateY(0)}
.btn-main:focus-visible{box-shadow:0 0 0 3px rgba(255,106,61,.35)}
.btn-line{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1.5px solid var(--brand-600);
  background:var(--surface);
  color:var(--brand-600);
  font-size:16px;
  font-weight:700;
  cursor:pointer;
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease);
}
.btn-line:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px)}
.btn-line:focus-visible{box-shadow:0 0 0 3px rgba(26,95,208,.18)}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:700;
  color:var(--brand-600);
}
.link-arrow svg{stroke:var(--brand-600);transition:transform var(--t) var(--ease),stroke var(--t) var(--ease)}
.link-arrow:hover{color:var(--brand-700)}
.link-arrow:hover svg{transform:translateX(3px);stroke:var(--accent)}

/* ---------- Article hero ---------- */
.article-hero{
  position:relative;
  padding:26px 0 8px;
  overflow:hidden;
}
.article-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:url(/assets/images/backpic/back-2.png) center/cover no-repeat;
  opacity:.13;
}
.article-hero::after{
  content:"";
  position:absolute;
  top:-180px;right:-140px;
  width:540px;height:540px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(26,95,208,.16),rgba(26,95,208,0) 68%);
}
.article-hero .container{position:relative;z-index:1}
.breadcrumb-nav{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--ink-400);
  padding:4px 2px 0;
}
.breadcrumb-nav a{color:var(--ink-400)}
.breadcrumb-nav a:hover{color:var(--brand-600)}
.breadcrumb-nav .current{color:var(--brand-600);font-weight:600}
.breadcrumb-nav svg{stroke:var(--ink-400)}

.hero-card{
  margin-top:16px;
  padding:36px 40px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-3);
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--accent-050);
  color:var(--accent);
  font-size:12px;
  font-weight:700;
}
.chip.blue{background:var(--brand-050);color:var(--brand-600)}
.hero-card h1{
  margin-top:14px;
  font-size:clamp(28px,3.6vw,42px);
  line-height:1.28;
  font-weight:800;
  color:var(--ink-900);
}
.meta-row{
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
  margin-top:22px;
  padding-top:20px;
  border-top:1px dashed var(--line);
}
.meta-item{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13px;
  color:var(--ink-400);
}
.meta-item svg{stroke:var(--ink-400)}
.meta-actions{margin-left:auto;display:flex;align-items:center;gap:10px}

/* ---------- Article body ---------- */
.article-shell{
  max-width:856px;
  margin:32px auto 0;
  padding:48px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-1);
}
.article-body{
  max-width:760px;
  margin:0 auto;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-600);
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;
  margin:40px 0 16px;
  padding-left:16px;
  font-size:clamp(22px,2.4vw,28px);
  line-height:1.35;
  font-weight:800;
  color:var(--ink-900);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.2em;bottom:.2em;
  width:4px;border-radius:4px;
  background:var(--brand-600);
}
.article-body h3{
  margin:28px 0 12px;
  font-size:20px;
  line-height:1.5;
  font-weight:700;
  color:var(--ink-900);
}
.article-body p{margin:0 0 1.2em}
.article-body strong{color:var(--ink-900);font-weight:700}
.article-body a{
  color:var(--brand-600);
  border-bottom:1px solid rgba(26,95,208,.35);
}
.article-body a:hover{color:var(--brand-700);border-bottom-color:var(--accent)}
.article-body ul,
.article-body ol{margin:0 0 1.2em;padding-left:0;list-style:none}
.article-body li{
  position:relative;
  padding-left:22px;
  margin-bottom:8px;
  line-height:1.9;
}
.article-body li::before{
  content:"";
  position:absolute;
  left:4px;top:.78em;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--accent);
}
.article-body ol{counter-reset:item}
.article-body ol li{counter-increment:item;padding-left:32px}
.article-body ol li::before{
  content:counter(item);
  top:0;left:0;
  width:22px;height:22px;
  border-radius:999px;
  background:var(--accent);
  color:#fff;
  font-size:12px;
  font-weight:700;
  display:grid;place-items:center;
  line-height:1;
}
.article-body blockquote{
  margin:24px 0;
  padding:20px;
  background:var(--brand-050);
  border-left:3px solid var(--accent);
  border-radius:0 14px 14px 0;
  color:var(--ink-600);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  max-width:100%;
  height:auto;
  border-radius:14px;
  margin:24px auto;
}
.article-body figure{margin:24px 0}
.article-body figcaption{
  margin-top:10px;
  font-size:13px;
  color:var(--ink-400);
  text-align:center;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15px;
  display:block;
  overflow-x:auto;
  white-space:nowrap;
}
.article-body th,
.article-body td{
  padding:12px 16px;
  text-align:left;
  border-bottom:1px solid var(--line);
}
.article-body thead th{
  color:var(--ink-900);
  font-weight:700;
  background:var(--brand-050);
}
.article-body tbody tr:nth-child(even){background:#FAFCFF}
.article-body code{
  background:var(--brand-050);
  color:var(--brand-700);
  padding:2px 6px;
  border-radius:6px;
  font-size:15px;
}
.empty-state{
  max-width:760px;
  margin:0 auto;
  padding:32px 12px;
  text-align:center;
}
.empty-state svg{stroke:var(--ink-400);margin:0 auto 18px}
.empty-state h2{
  font-size:22px;
  font-weight:800;
  color:var(--ink-900);
  margin-bottom:10px;
}
.empty-state p{margin-bottom:22px;color:var(--ink-600)}

/* ---------- Tags + prev / next ---------- */
.article-tail{
  max-width:856px;
  margin:28px auto 0;
}
.tag-bar{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  padding:20px 24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
}
.tag-bar .tag-label{
  font-size:13px;
  font-weight:700;
  color:var(--ink-400);
  margin-right:4px;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:6px 14px;
  border-radius:999px;
  background:var(--brand-050);
  color:var(--brand-600);
  font-size:13px;
  font-weight:600;
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease);
}
.tag:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px)}

.prev-next{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  margin-top:20px;
}
.pn-card{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:20px 22px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.pn-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:rgba(26,95,208,.3);
}
.pn-label{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--ink-400);
}
.pn-label svg{stroke:var(--ink-400)}
.pn-card:hover .pn-label svg{stroke:var(--brand-600)}
.pn-title{font-size:16px;font-weight:700;color:var(--ink-900);line-height:1.5}
.pn-card.next{text-align:right}
.pn-card.next .pn-label{justify-content:flex-end}

/* ---------- Section base ---------- */
.section{padding:72px 0 0}
.section-title{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:clamp(22px,2.4vw,28px);
  font-weight:800;
  color:var(--ink-900);
  margin:0 0 24px;
}
.section-title::before{
  content:"";
  width:4px;height:1em;
  border-radius:4px;
  background:var(--brand-600);
}
.section-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:24px;
}
.section-head .section-title{margin:0}

/* ---------- Related ---------- */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.related-card{
  display:flex;
  gap:14px;
  padding:14px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.related-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:rgba(26,95,208,.3);
}
.related-card img{
  width:96px;height:96px;
  border-radius:12px;
  object-fit:cover;
  flex:0 0 auto;
}
.related-info{display:flex;flex-direction:column;min-width:0}
.related-info h3{
  font-size:16px;
  line-height:1.45;
  font-weight:700;
  color:var(--ink-900);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card:hover h3{color:var(--brand-600)}
.related-meta{
  margin-top:auto;
  padding-top:10px;
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--ink-400);
}
.related-meta svg{stroke:var(--ink-400)}

/* ---------- CTA band ---------- */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  margin-top:72px;
  padding:40px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-2);
}
.cta-band h2{
  font-size:clamp(22px,2.4vw,28px);
  font-weight:800;
  color:var(--ink-900);
  line-height:1.35;
}
.cta-band p{margin-top:10px;font-size:15px;color:var(--ink-600);max-width:560px}
.cta-actions{display:flex;gap:12px;flex:0 0 auto}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:88px;
  padding:56px 0 32px;
  background:#0D2A4A;
  color:#C7D6EA;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-mark{background:rgba(255,255,255,.1)}
.footer-brand .brand-text{color:#fff}
.footer-desc{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:#C7D6EA;
  max-width:300px;
}
.footer-title{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  font-size:14px;
  color:#C7D6EA;
  transition:color var(--t) var(--ease),transform var(--t) var(--ease);
}
.footer-links a:hover{color:#FF6A3D;transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact > div{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:#C7D6EA;
}
.footer-contact svg{stroke:#C7D6EA}
.footer-bottom{
  margin-top:36px;
  padding-top:24px;
  border-top:1px solid rgba(199,214,234,.18);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:12.5px;
  color:#8595AB;
}

/* ---------- Mobile drawer ---------- */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:120;
  display:none;
}
.mobile-drawer.open{display:block}
.drawer-panel{
  position:absolute;
  inset:0;
  padding:18px 18px 24px;
  background:var(--surface);
  display:flex;
  flex-direction:column;
  overflow-y:auto;
}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.drawer-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
  margin-top:18px;
}
.drawer-item{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:8px;
  height:76px;
  padding:12px 14px;
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--brand-050);
  color:var(--ink-900);
  font-size:15px;
  font-weight:700;
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease);
}
.drawer-item svg{stroke:var(--brand-600)}
.drawer-item:hover{background:#E3EDFF;color:var(--ink-900)}
.drawer-item.active{background:var(--brand-600);color:#fff}
.drawer-item.active svg{stroke:#fff}
.drawer-cta{margin-top:auto;width:100%}

/* ---------- Sticky CTA ---------- */
.sticky-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:110;
  display:none;
  align-items:center;
  gap:12px;
  height:64px;
  padding:0 16px;
  background:var(--surface);
  border-top:1px solid var(--line);
  box-shadow:0 -8px 24px rgba(19,48,102,.08);
}
.sticky-cta span{
  flex:1;
  font-size:13px;
  color:var(--ink-600);
  line-height:1.4;
}
.sticky-cta .btn-main{height:44px;padding:0 18px;font-size:15px}

/* ---------- Toast ---------- */
.toast-note{
  position:fixed;
  left:50%;
  bottom:96px;
  transform:translate(-50%,12px);
  padding:10px 18px;
  border-radius:999px;
  background:var(--ink-900);
  color:#fff;
  font-size:14px;
  opacity:0;
  pointer-events:none;
  transition:opacity var(--t) var(--ease),transform var(--t) var(--ease);
  z-index:200;
}
.toast-note.show{opacity:1;transform:translate(-50%,0)}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .container,.container-fluid{padding-left:24px;padding-right:24px}
  .nav-chip{padding:9px 11px;font-size:14px}
  .nav-chip svg{width:18px;height:18px}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:28px}
}
@media (max-width:991px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .nav-card{padding:10px 12px}
  .hero-card{padding:28px 24px}
  .article-shell{padding:32px 24px;margin-top:24px}
  .related-grid{grid-template-columns:1fr;gap:16px}
  .section{padding:56px 0 0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px;margin-top:56px;gap:20px}
  .cta-actions{flex-direction:column;width:100%}
  .cta-actions .btn-main,.cta-actions .btn-line{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .site-footer{margin-top:64px}
}
@media (max-width:767px){
  .container,.container-fluid{padding-left:16px;padding-right:16px}
  .brand-text{font-size:15px}
  .hero-card{padding:24px 18px;border-radius:20px}
  .article-shell{padding:24px 18px;border-radius:20px}
  .article-body{font-size:16.5px}
  .prev-next{grid-template-columns:1fr}
  .pn-card.next{text-align:left}
  .pn-card.next .pn-label{justify-content:flex-start}
  .tag-bar{padding:16px}
  .sticky-cta{display:flex}
  body{padding-bottom:72px}
  .site-footer{padding-bottom:88px}
  .toast-note{bottom:88px}
  .related-card img{width:84px;height:84px}
}
@media (max-width:520px){
  .drawer-grid{grid-template-columns:1fr}
  .nav-search{flex-direction:column}
  .nav-search .btn-main{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .article-body h2{margin-top:32px}
}
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --brand-600:#1A5FD0;
  --brand-700:#144BA8;
  --brand-050:#EEF4FF;
  --accent:#FF6A3D;
  --accent-050:#FFF0EA;
  --support:#12B886;
  --ink-900:#0F1B2D;
  --ink-600:#44546B;
  --ink-400:#8595AB;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E4EAF4;
  --footer-bg:#0D2A4A;
  --footer-text:#C7D6EA;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 2px 8px rgba(19,48,102,.05);
  --shadow-2:0 8px 24px rgba(19,48,102,.08);
  --shadow-3:0 16px 40px rgba(19,48,102,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:220ms var(--ease);
  --sec:48px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--brand-600);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--brand-700)}
button{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(26,95,208,.35);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1240px;margin-inline:auto;padding-inline:32px}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  padding-top:16px;
  padding-bottom:0;
  background:linear-gradient(180deg,var(--bg) 62%,rgba(246,248,252,0));
}
.site-header::after{
  content:"";
  display:block;
  height:16px;
}
.nav-card{
  display:flex;
  align-items:center;
  gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow-2);
  padding:10px 14px;
  transition:box-shadow var(--t),border-color var(--t);
}
.site-header.is-scrolled .nav-card{
  box-shadow:var(--shadow-2),0 1px 0 var(--line) inset;
  border-color:#D9E2F2;
  background:#fff;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink-900);
}
.brand:hover{color:var(--ink-900)}
.brand-mark{
  width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--brand-050);
  border:1px solid var(--line);
  flex:0 0 auto;
}
.brand-text{
  font-size:17px;
  font-weight:800;
  letter-spacing:0;
  white-space:nowrap;
  color:var(--ink-900);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 14px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  color:var(--ink-600);
  white-space:nowrap;
  transition:background var(--t),color var(--t),transform var(--t);
}
.nav-chip svg{stroke:currentColor;flex:0 0 auto}
.nav-chip:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px)}
.nav-chip.active{background:var(--brand-600);color:#fff}
.nav-chip.active:hover{background:var(--brand-700);color:#fff}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:44px;
  padding:0 20px;
  margin-left:8px;
  border-radius:var(--radius-sm);
  background:var(--accent);
  color:#fff;
  font-size:15px;
  font-weight:700;
  box-shadow:var(--shadow-1);
  transition:background var(--t),transform var(--t),box-shadow var(--t);
}
.nav-cta:hover{background:#F2551F;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.nav-cta:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(255,106,61,.35)}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:#fff;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:background var(--t),border-color var(--t);
}
.nav-toggle:hover{background:var(--brand-050);border-color:#CFDDF6}
.nav-toggle svg{stroke:var(--brand-600)}
.nav-toggle .icon-close{display:none}
.nav-toggle.is-open .icon-menu{display:none}
.nav-toggle.is-open .icon-close{display:block}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:40px 0 60px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center 30%;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.86) 0%,rgba(255,255,255,.88) 60%,rgba(246,248,252,.96) 100%);
}
.page-hero > .container{position:relative;z-index:2}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-400);
  margin-bottom:18px;
  flex-wrap:wrap;
}
.crumb a{color:var(--ink-400)}
.crumb a:hover{color:var(--brand-600)}
.crumb svg{stroke:var(--ink-400);flex:0 0 auto}
.crumb .current{color:var(--brand-600);font-weight:600}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 14px;
  border-radius:999px;
  background:var(--accent-050);
  color:var(--accent);
  font-size:12px;
  font-weight:700;
  margin-bottom:16px;
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.25;
  font-weight:800;
  color:var(--ink-900);
  max-width:22ch;
}
.hero-lead{
  margin-top:16px;
  font-size:17px;
  line-height:1.8;
  color:var(--ink-600);
  max-width:62ch;
}
.hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.hero-badges span{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 14px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  font-size:13px;
  color:var(--ink-600);
  font-weight:600;
}
.hero-badges svg{stroke:var(--brand-600);flex:0 0 auto}

/* ---------- Sections ---------- */
.section{padding-block:var(--sec)}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:28px;
}
.sec-title{
  position:relative;
  padding-left:14px;
  font-size:clamp(24px,2.8vw,32px);
  line-height:1.3;
  font-weight:800;
  color:var(--ink-900);
}
.sec-title::before{
  content:"";
  position:absolute;
  left:0;
  top:.2em;
  bottom:.2em;
  width:4px;
  border-radius:2px;
  background:var(--brand-600);
}
.sec-sub{
  margin-top:10px;
  font-size:15px;
  color:var(--ink-400);
  padding-left:14px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand-600);
}
.text-link svg{stroke:currentColor;transition:transform var(--t),stroke var(--t)}
.text-link:hover svg{transform:translateX(3px);stroke:var(--accent)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-sm);
  font-size:16px;
  font-weight:700;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:#F2551F;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(255,106,61,.35)}
.btn-secondary{background:#fff;color:var(--brand-600);border-color:var(--brand-600)}
.btn-secondary:hover{background:var(--brand-050);color:var(--brand-700)}
.btn-secondary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(26,95,208,.18)}
.btn-ghost{background:var(--brand-050);color:var(--brand-600);border-color:transparent}
.btn-ghost:hover{background:#E2ECFF;color:var(--brand-700)}

/* ---------- Key points ---------- */
.point-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.point-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  padding:28px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:#CFDDF6}
.point-icon{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:14px;
  background:var(--brand-050);
  margin-bottom:18px;
}
.point-icon svg{stroke:var(--brand-600)}
.point-card h3{
  font-size:18px;
  line-height:1.45;
  font-weight:700;
  color:var(--ink-900);
  margin-bottom:10px;
}
.point-card p{font-size:15px;line-height:1.8;color:var(--ink-600)}

/* ---------- Guide layout ---------- */
.guide-layout{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:32px;
  align-items:start;
}
.toc-card{
  position:sticky;
  top:104px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  padding:24px;
}
.toc-title{
  font-size:15px;
  font-weight:700;
  color:var(--ink-900);
  margin-bottom:14px;
  padding-bottom:12px;
  border-bottom:1px dashed var(--line);
}
.toc-link{
  position:relative;
  display:block;
  padding:11px 12px 11px 16px;
  border-radius:10px;
  font-size:14.5px;
  font-weight:600;
  color:var(--ink-600);
  transition:background var(--t),color var(--t);
}
.toc-link::before{
  content:"";
  position:absolute;
  left:0;top:12px;bottom:12px;
  width:3px;
  border-radius:2px;
  background:transparent;
  transition:background var(--t);
}
.toc-link:hover{background:var(--brand-050);color:var(--brand-700)}
.toc-link.active{color:var(--brand-600);background:var(--brand-050)}
.toc-link.active::before{background:var(--accent)}
.toc-note{
  margin-top:16px;
  padding:16px;
  border-radius:var(--radius-md);
  background:var(--brand-050);
  font-size:13.5px;
  line-height:1.75;
  color:var(--ink-600);
}
.toc-note strong{display:block;color:var(--ink-900);font-size:14px;margin-bottom:6px}
.toc-note .btn{margin-top:14px;width:100%;height:42px;font-size:14.5px}

.guide-blocks{display:grid;gap:24px}
.guide-block{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  padding:32px;
  scroll-margin-top:110px;
  transition:box-shadow var(--t),border-color var(--t);
}
.guide-block:hover{box-shadow:var(--shadow-2);border-color:#D9E2F2}
.block-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:34px;
  height:26px;
  padding:0 10px;
  border-radius:999px;
  background:var(--accent-050);
  color:var(--accent);
  font-size:12.5px;
  font-weight:700;
  margin-bottom:14px;
}
.guide-block h3{
  font-size:21px;
  line-height:1.45;
  font-weight:700;
  color:var(--ink-900);
  margin-bottom:14px;
}
.guide-block p{font-size:16px;line-height:1.85;color:var(--ink-600);margin-bottom:14px}
.guide-block p:last-of-type{margin-bottom:0}
.block-media{
  display:grid;
  grid-template-columns:minmax(0,1fr) 208px;
  gap:24px;
  align-items:start;
  margin-top:22px;
  padding-top:22px;
  border-top:1px dashed var(--line);
}
.pull-text{
  background:var(--brand-050);
  border-left:3px solid var(--accent);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  padding:18px 20px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--ink-600);
}
.pull-text strong{color:var(--ink-900)}
.phone-shot{
  border-radius:var(--radius-md);
  background:var(--brand-050);
  border:1px solid var(--line);
  overflow:hidden;
}
.phone-shot img{
  width:100%;
  aspect-ratio:9/16;
  object-fit:cover;
  border-radius:var(--radius-md);
}
.phone-shot figcaption{
  font-size:12.5px;
  color:var(--ink-400);
  text-align:center;
  padding:10px 8px;
  background:#fff;
  border-top:1px solid var(--line);
}

/* ---------- Scenes ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.scene-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:#CFDDF6}
.scene-card img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.scene-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.scene-body h3{font-size:17px;line-height:1.45;font-weight:700;color:var(--ink-900)}
.scene-body p{font-size:14.5px;line-height:1.75;color:var(--ink-600);flex:1}
.scene-badge{
  align-self:flex-start;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  background:var(--brand-050);
  color:var(--brand-600);
}

/* ---------- Steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  counter-reset:step;
}
.step-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  padding:28px 24px 24px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:#CFDDF6}
.step-num{
  width:32px;height:32px;
  display:flex;align-items:center;justify-content:center;
  border-radius:999px;
  background:var(--accent);
  color:#fff;
  font-size:14px;
  font-weight:700;
  margin-bottom:16px;
}
.step-card h3{font-size:17px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.step-card p{font-size:14.5px;line-height:1.75;color:var(--ink-600)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item.open{border-color:#CFDDF6;box-shadow:var(--shadow-2)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  background:none;
  border:none;
  text-align:left;
  font-size:17px;
  font-weight:700;
  color:var(--ink-900);
  cursor:pointer;
  transition:background var(--t);
}
.faq-q:hover{background:var(--brand-050)}
.faq-sign{
  flex:0 0 auto;
  width:24px;height:24px;
  display:flex;align-items:center;justify-content:center;
}
.faq-sign svg{stroke:var(--brand-600)}
.faq-sign .bar-v{transition:opacity var(--t),transform var(--t)}
.faq-item.open .faq-sign .bar-v{opacity:0}
.faq-a{
  display:none;
  position:relative;
  padding:0 24px 20px 24px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--ink-600);
}
.faq-item.open .faq-a{display:block}
.faq-a::before{
  content:"";
  position:absolute;
  left:0;top:2px;bottom:20px;
  width:4px;
  border-radius:0 2px 2px 0;
  background:var(--accent);
}

/* ---------- CTA ---------- */
.cta-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:24px;
  box-shadow:var(--shadow-2);
  padding:40px;
  display:grid;
  grid-template-columns:minmax(0,6fr) minmax(0,4fr);
  gap:32px;
  align-items:center;
}
.cta-card h2{
  position:relative;
  padding-left:14px;
  font-size:clamp(24px,2.8vw,30px);
  line-height:1.3;
  font-weight:800;
  color:var(--ink-900);
  margin-bottom:14px;
}
.cta-card h2::before{
  content:"";
  position:absolute;
  left:0;top:.2em;bottom:.2em;
  width:4px;border-radius:2px;background:var(--brand-600);
}
.cta-card p{font-size:15.5px;line-height:1.8;color:var(--ink-600);max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--footer-bg);
  color:var(--footer-text);
  padding:64px 0 28px;
  margin-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:32px;
  border-bottom:1px solid rgba(199,214,234,.16);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.footer-brand .brand-mark{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.16);
}
.footer-brand .brand-text{color:#fff;font-size:17px;font-weight:800}
.footer-desc{
  font-size:14px;
  line-height:1.8;
  color:var(--footer-text);
  max-width:34ch;
}
.footer-title{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-links{display:grid;gap:10px}
.footer-links a{
  font-size:14px;
  color:var(--footer-text);
  transition:color var(--t),transform var(--t);
}
.footer-links a:hover{color:var(--accent);transform:translateX(2px)}
.footer-contact{display:grid;gap:12px}
.footer-contact div{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--footer-text);
}
.footer-contact svg{stroke:#7E97B6;flex:0 0 auto}
.footer-bottom{
  padding-top:24px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:#8595AB;
}
.footer-bottom a{color:#8595AB}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- Mobile sticky CTA ---------- */
.mobile-cta{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  height:64px;
  padding:0 16px;
  background:#fff;
  border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(19,48,102,.08);
  align-items:center;
  gap:12px;
}
.mobile-cta span{
  flex:1;
  font-size:13px;
  line-height:1.4;
  color:var(--ink-600);
}
.mobile-cta .btn{height:44px;padding:0 18px;font-size:15px;flex:0 0 auto}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  :root{--sec:40px}
  .container{padding-inline:24px}
  .nav-chip{padding:8px 12px;font-size:14.5px}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
}
@media (max-width:991px){
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;
    left:12px;right:12px;
    top:84px;
    bottom:auto;
    max-height:calc(100vh - 110px);
    overflow-y:auto;
    display:none;
    grid-template-columns:1fr 1fr;
    gap:12px;
    margin:0;
    padding:20px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:24px;
    box-shadow:var(--shadow-3);
  }
  .nav-links.open{display:grid}
  .nav-chip{
    height:72px;
    flex-direction:column;
    justify-content:center;
    gap:6px;
    font-size:14px;
    background:var(--brand-050);
    border-radius:var(--radius-md);
    padding:8px;
  }
  .nav-chip:hover{transform:translateY(-1px)}
  .nav-cta{
    grid-column:1 / -1;
    margin:4px 0 0;
    height:48px;
    border-radius:var(--radius-sm);
  }
  .guide-layout{grid-template-columns:minmax(0,1fr)}
  .toc-card{position:static;top:auto}
  .point-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .block-media{grid-template-columns:minmax(0,1fr) 180px}
  .cta-card{grid-template-columns:minmax(0,1fr);padding:32px}
  .cta-actions{justify-content:flex-start}
}
@media (max-width:767px){
  :root{--sec:28px}
  .container{padding-inline:16px}
  .site-header{padding-top:12px}
  .site-header::after{height:12px}
  .brand-text{font-size:15.5px}
  .brand-mark{width:36px;height:36px}
  .page-hero{padding:28px 0 40px}
  .hero-lead{font-size:16px}
  .point-grid{grid-template-columns:minmax(0,1fr)}
  .scene-grid{grid-template-columns:minmax(0,1fr)}
  .steps{grid-template-columns:minmax(0,1fr)}
  .guide-block{padding:22px}
  .block-media{grid-template-columns:minmax(0,1fr)}
  .phone-shot{max-width:240px;margin-inline:auto}
  .faq-q{font-size:16px;padding:18px}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px}
  .footer-bottom{flex-direction:column;gap:8px}
  .mobile-cta{display:flex}
  .site-footer{padding-bottom:96px}
  .btn{height:44px;padding:0 20px;font-size:15.5px}
  .cta-actions .btn{width:100%}
}
@media (max-width:519px){
  .nav-links{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* roulang page: category1 */
:root{
  --brand-600:#1A5FD0;
  --brand-700:#144BA8;
  --brand-050:#EEF4FF;
  --accent:#FF6A3D;
  --accent-050:#FFF0EA;
  --accent-700:#D8481C;
  --support:#12B886;
  --ink-900:#0F1B2D;
  --ink-600:#44546B;
  --ink-400:#8595AB;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E4EAF4;
  --footer-bg:#0D2A4A;
  --footer-text:#C7D6EA;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:16px;
  --r-btn:12px;
  --sh1:0 2px 8px rgba(19,48,102,.05);
  --sh2:0 8px 24px rgba(19,48,102,.08);
  --sh3:0 16px 40px rgba(19,48,102,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-font-family:'HarmonyOS Sans','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --bs-primary:#1A5FD0;
  --bs-link-color:#1A5FD0;
  --bs-link-hover-color:#144BA8;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:'HarmonyOS Sans','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-600);text-decoration:none;transition:color 220ms var(--ease),background-color 220ms var(--ease),transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease)}
a:hover{color:var(--brand-700)}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:800;letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(26,95,208,.28);outline-offset:2px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  padding:16px 0 0;
  background:linear-gradient(180deg,rgba(246,248,252,.97),rgba(246,248,252,.9));
  backdrop-filter:blur(8px);
}
.nav-card{
  display:flex;
  align-items:center;
  gap:14px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--sh2);
  padding:10px 14px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:var(--brand-050);
  display:inline-flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.brand-mark svg{fill:none}
.brand-text{font-size:17px;font-weight:800;color:var(--ink-900);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin:0 auto}
.nav-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 12px;border-radius:12px;
  font-size:15px;font-weight:600;color:var(--ink-600);
  background:transparent;border:0;white-space:nowrap;
  transition:all 220ms var(--ease);
}
.nav-chip svg{stroke:currentColor;fill:none;flex:0 0 auto}
.nav-chip:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px)}
.nav-chip.active{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(26,95,208,.24)}
.nav-chip.active:hover{background:var(--brand-700);color:#fff}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink-600);
  display:inline-flex;align-items:center;justify-content:center;
  transition:all 220ms var(--ease);cursor:pointer;
}
.icon-btn svg{stroke:currentColor;fill:none}
.icon-btn:hover{background:var(--brand-050);color:var(--brand-600);border-color:#CFDEFB}
.nav-toggle{display:none}

.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--accent);color:#fff;font-weight:700;font-size:16px;
  border:0;box-shadow:0 6px 18px rgba(255,106,61,.24);cursor:pointer;
  transition:all 220ms var(--ease);
}
.btn-accent:hover{background:#F25426;color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-accent:active{transform:translateY(0)}
.btn-accent:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(255,106,61,.35)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  background:#fff;border:1.5px solid var(--brand-600);color:var(--brand-600);
  font-weight:700;font-size:16px;cursor:pointer;transition:all 220ms var(--ease);
}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-700);border-color:var(--brand-700)}
.btn-ghost-sm{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  background:#fff;border:1.5px solid var(--brand-600);color:var(--brand-600);
  font-weight:700;font-size:15px;cursor:pointer;transition:all 220ms var(--ease);
}
.btn-ghost-sm:hover{background:var(--brand-050);color:var(--brand-700)}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand-600);
}
.link-more svg{stroke:currentColor;fill:none;transition:transform 220ms var(--ease)}
.link-more:hover{color:var(--accent)}
.link-more:hover svg{transform:translateX(3px)}

/* mobile drawer */
.mobile-panel{
  display:none;
  position:fixed;inset:0;z-index:1050;
  background:#fff;border-radius:24px 24px 0 0;
  padding:22px 16px 24px;overflow:auto;
}
.mobile-panel.open{display:block}
.mobile-panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.mobile-title{font-size:15px;font-weight:700;color:var(--ink-900)}
.mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px}
.mobile-grid a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  height:84px;border-radius:16px;background:var(--brand-050);
  color:var(--ink-900);font-size:14px;font-weight:600;text-align:center;
}
.mobile-grid a svg{stroke:var(--brand-600);fill:none}
.mobile-grid a.active{background:var(--brand-600);color:#fff}
.mobile-grid a.active svg{stroke:#fff}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  margin-top:24px;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh2);
  padding:44px 44px 40px;
  background:linear-gradient(0deg,rgba(255,255,255,.86),rgba(255,255,255,.86)),
             url(/assets/images/backpic/back-1.webp) center/cover no-repeat,
             #fff;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-120px;top:-140px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(26,95,208,.16),rgba(26,95,208,0) 70%);
  pointer-events:none;
}
.crumbs{
  position:relative;z-index:1;
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-400);margin-bottom:16px;
}
.crumbs a{color:var(--ink-400);display:inline-flex;align-items:center;gap:6px}
.crumbs a:hover{color:var(--brand-600)}
.crumbs svg{stroke:var(--ink-400);fill:none}
.crumbs .current{color:var(--brand-600);font-weight:700}
.page-hero h1{
  position:relative;z-index:1;
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.25;font-weight:800;
  max-width:820px;
}
.page-hero .hero-sub{
  position:relative;z-index:1;
  margin-top:14px;max-width:640px;
  font-size:17px;color:var(--ink-600);line-height:1.75;
}
.hero-badges{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;
}
.mini-badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--ink-600);
  box-shadow:var(--sh1);
}
.mini-badge svg{stroke:var(--brand-600);fill:none;flex:0 0 auto}

/* ---------- section base ---------- */
.section{margin-top:88px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-title{
  position:relative;
  padding-left:14px;
  font-size:clamp(24px,2.8vw,32px);
  line-height:1.3;font-weight:800;
}
.section-title::before{
  content:"";
  position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:26px;border-radius:3px;background:var(--brand-600);
}
.section-desc{margin-top:10px;font-size:15px;color:var(--ink-400);max-width:640px}

/* ---------- layout with sidebar ---------- */
.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 336px;
  gap:32px;align-items:start;
  margin-top:56px;
}
.ov-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.ov-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh1);
  overflow:hidden;
  transition:all 220ms var(--ease);
}
.ov-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:rgba(26,95,208,.3)}
.ov-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--brand-050)}
.ov-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 220ms var(--ease)}
.ov-card:hover .ov-thumb img{transform:scale(1.04)}
.tag{
  position:absolute;top:12px;left:12px;
  background:var(--accent-050);color:var(--accent-700);
  font-size:11px;font-weight:700;letter-spacing:0;
  padding:4px 10px;border-radius:999px;
}
.ov-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.ov-body h3{font-size:17px;line-height:1.45;font-weight:700}
.ov-body p{font-size:15px;line-height:1.7;color:var(--ink-600);flex:1}

/* sidebar */
.sidebar{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px;
  box-shadow:var(--sh1);
}
.side-title{font-size:16px;font-weight:800;color:var(--ink-900);margin-bottom:8px}
.hot-list li+li{border-top:1px dashed var(--line)}
.hot-list a{display:flex;align-items:flex-start;gap:12px;padding:13px 0;color:var(--ink-600);font-size:15px;line-height:1.6}
.hot-list a:hover{color:var(--brand-600)}
.hot-num{
  flex:0 0 auto;width:26px;height:26px;border-radius:999px;
  background:var(--accent-050);color:var(--accent-700);
  font-size:13px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  transition:all 220ms var(--ease);
}
.hot-list a:hover .hot-num{background:var(--accent);color:#fff;transform:scale(1.06)}
.mini-cta{
  background:var(--brand-050);
  border:1px solid #DCE7FB;
  border-radius:var(--r-md);
  padding:24px;
}
.mini-cta .mini-cover{
  border-radius:var(--r-sm);overflow:hidden;margin-bottom:16px;aspect-ratio:16/10;background:#fff;
}
.mini-cta .mini-cover img{width:100%;height:100%;object-fit:cover}
.mini-cta h3{font-size:17px;line-height:1.45;margin-bottom:8px}
.mini-cta p{font-size:14px;color:var(--ink-600);margin-bottom:16px}

/* ---------- scene cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.scene-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:24px;
  box-shadow:var(--sh1);
  transition:all 220ms var(--ease);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:rgba(26,95,208,.28)}
.scene-icon{
  width:44px;height:44px;border-radius:12px;
  background:var(--brand-050);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.scene-icon svg{stroke:var(--brand-600);fill:none}
.scene-card h3{font-size:17px;margin-bottom:8px}
.scene-card p{font-size:15px;color:var(--ink-600)}

/* ---------- steps ---------- */
.steps-flow{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh1);
  padding:36px;
}
.step-row{
  display:grid;grid-template-columns:56px minmax(0,1fr) minmax(0,1.4fr);
  gap:20px;align-items:center;
  padding:20px 16px;border-radius:var(--r-sm);
  transition:all 220ms var(--ease);
}
.step-row+.step-row{border-top:1px dashed var(--line)}
.step-row:hover{background:var(--brand-050);transform:translateY(-3px)}
.step-num{
  width:44px;height:44px;border-radius:999px;
  background:var(--accent);color:#fff;font-weight:800;font-size:17px;
  display:inline-flex;align-items:center;justify-content:center;
}
.step-row h3{font-size:17px}
.step-row p{font-size:15px;color:var(--ink-600)}

/* ---------- stats band ---------- */
.stats-band{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh1);
  padding:32px;
}
.stat-item{text-align:center;padding:12px}
.stat-num{font-size:34px;font-weight:800;color:var(--brand-600);line-height:1.2}
.stat-num span{font-size:16px;color:var(--ink-400);font-weight:600;margin-left:4px}
.stat-label{margin-top:6px;font-size:14px;color:var(--ink-400)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  margin-bottom:12px;
  overflow:hidden;
  transition:all 220ms var(--ease);
}
.faq-item:hover{box-shadow:var(--sh2)}
.faq-item.open{box-shadow:var(--sh2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:none;border:0;text-align:left;
  font-size:17px;font-weight:700;color:var(--ink-900);cursor:pointer;
  transition:background-color 220ms var(--ease);
}
.faq-q:hover{background:var(--brand-050)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  background:var(--brand-050);
  display:inline-flex;align-items:center;justify-content:center;
}
.faq-icon svg{stroke:var(--brand-600);fill:none;transition:transform 220ms var(--ease)}
.faq-item.open .faq-icon{background:var(--accent-050)}
.faq-item.open .faq-icon svg{stroke:var(--accent);transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease)}
.faq-item.open .faq-a{max-height:620px}
.faq-a-inner{
  padding:0 24px 22px 24px;
  border-left:4px solid transparent;
  font-size:15.5px;line-height:1.8;color:var(--ink-600);
}
.faq-item.open .faq-a-inner{border-left-color:var(--accent)}

/* ---------- CTA ---------- */
.cta-band{
  display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh2);
  padding:40px;
}
.cta-band h2{
  font-size:clamp(24px,2.8vw,32px);line-height:1.3;margin-bottom:12px;
}
.cta-band p{font-size:16px;color:var(--ink-600)}
.cta-actions{display:flex;gap:14px;justify-content:flex-end;flex-wrap:wrap}
.cta-note{margin-top:14px;font-size:13px;color:var(--ink-400)}

/* ---------- footer ---------- */
.site-footer{
  background:var(--footer-bg);
  color:var(--footer-text);
  margin-top:96px;
  padding:64px 0 32px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(255,255,255,.08)}
.footer-brand .brand-text{color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:var(--footer-text);max-width:320px}
.footer-title{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--footer-text);font-size:14px}
.footer-links a:hover{color:#FF6A3D;transform:translateX(2px)}
.footer-contact div{display:flex;align-items:center;gap:8px;font-size:14px;margin-bottom:10px}
.footer-contact svg{stroke:#7FA3CC;fill:none;flex:0 0 auto}
.footer-bottom{
  margin-top:24px;padding-top:24px;
  border-top:1px solid rgba(199,214,234,.16);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#8595AB;
}

/* ---------- mobile sticky cta ---------- */
.mobile-cta{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(19,48,102,.08);
  padding:10px 16px;gap:12px;align-items:center;justify-content:space-between;
}
.mobile-cta span{font-size:13px;color:var(--ink-600);line-height:1.4;max-width:52%}
.mobile-cta .btn-accent{height:44px;padding:0 18px;font-size:15px;flex:0 0 auto}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 24px}
  .nav-chip{padding:8px 9px;font-size:14px}
  .brand-text{font-size:15px}
  .layout{grid-template-columns:1fr;gap:40px}
  .sidebar{position:static;flex-direction:column}
  .ov-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .nav-links{display:none}
  .nav-cta-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .nav-card{justify-content:space-between}
  .section{margin-top:72px}
  .page-hero{padding:36px 28px 32px}
  .steps-flow{padding:24px}
  .step-row{grid-template-columns:48px minmax(0,1fr);gap:14px}
  .step-row p{grid-column:2}
  .stats-band{grid-template-columns:repeat(2,minmax(0,1fr));padding:24px}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .cta-actions{justify-content:flex-start}
}
@media (max-width:767px){
  body{padding-bottom:72px}
  .container{padding:0 16px}
  .site-header{padding:10px 0 0}
  .page-hero{margin-top:16px}
  .section{margin-top:56px}
  .ov-grid{grid-template-columns:1fr;gap:16px}
  .scene-grid{grid-template-columns:1fr}
  .stats-band{grid-template-columns:1fr 1fr;gap:12px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{margin-top:64px;padding:44px 0 28px}
  .mobile-cta{display:flex}
  .btn-accent,.btn-ghost{width:100%}
  .cta-actions{flex-direction:column}
  .mobile-cta .btn-accent{width:auto}
  .mini-cta,.side-card{padding:20px}
  .faq-q{font-size:16px;padding:18px 18px}
  .faq-a-inner{padding:0 18px 20px 18px}
}
@media (max-width:520px){
  .page-hero h1{font-size:27px}
  .hero-badges{gap:8px}
  .mini-badge{font-size:12px;padding:6px 11px}
  .step-num{width:38px;height:38px;font-size:15px}
  .stat-num{font-size:28px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --brand-600:#1A5FD0;
  --brand-700:#144BA8;
  --brand-050:#EEF4FF;
  --accent:#FF6A3D;
  --accent-050:#FFF0EA;
  --support:#12B886;
  --ink-900:#0F1B2D;
  --ink-600:#44546B;
  --ink-400:#8595AB;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E4EAF4;
  --footer-bg:#0D2A4A;
  --footer-text:#C7D6EA;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-1:0 2px 8px rgba(19,48,102,.05);
  --shadow-2:0 8px 24px rgba(19,48,102,.08);
  --shadow-3:0 16px 40px rgba(19,48,102,.12);
  --ease:220ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),border-color var(--ease);}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:800;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(26,95,208,.35);outline-offset:2px;border-radius:8px;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
@media (max-width:1199.98px){ .container{padding-left:24px;padding-right:24px;} }
@media (max-width:767.98px){ .container{padding-left:16px;padding-right:16px;} }

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  padding-top:16px;
  padding-bottom:16px;
  background:linear-gradient(180deg,rgba(246,248,252,.96) 0%,rgba(246,248,252,.88) 100%);
  backdrop-filter:blur(6px);
}
.nav-card{
  display:flex;
  align-items:center;
  gap:18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow-2);
  padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:var(--brand-050);
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(26,95,208,.14);
}
.brand-text{
  font-size:16px;font-weight:800;color:var(--ink-900);white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:6px;flex:1 1 auto;overflow:hidden;}
.nav-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;
  border-radius:var(--r-sm);
  font-size:14.5px;font-weight:600;color:var(--ink-600);
  white-space:nowrap;
  transition:background var(--ease),color var(--ease),transform var(--ease);
}
.nav-chip svg{stroke:currentColor;flex:0 0 auto;}
.nav-chip:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px);}
.nav-chip.active{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-1);}
.nav-chip.active:hover{background:var(--brand-700);color:#fff;}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--surface);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-600);cursor:pointer;
  transition:background var(--ease),border-color var(--ease),color var(--ease),transform var(--ease);
}
.icon-btn svg{stroke:currentColor;}
.icon-btn:hover{background:var(--brand-050);border-color:rgba(26,95,208,.28);color:var(--brand-700);transform:translateY(-1px);}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;
  gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--r-sm);
  background:var(--accent);color:#fff;
  font-size:15px;font-weight:700;
  border:1px solid var(--accent);
  box-shadow:0 4px 12px rgba(255,106,61,.22);
  transition:background var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-accent:hover{background:#F05A2C;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-accent:active{transform:translateY(0);}
.nav-cta{height:42px;padding:0 18px;font-size:14.5px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--surface);color:var(--ink-900);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{stroke:currentColor;}
.nav-drawer{
  margin-top:12px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:24px 24px 18px 18px;
  box-shadow:var(--shadow-3);
  padding:18px;
}
.drawer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
.drawer-chip{
  display:flex;flex-direction:column;align-items:flex-start;justify-content:center;
  gap:6px;min-height:72px;padding:12px 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  color:var(--ink-600);font-size:14px;font-weight:600;
  background:var(--surface);
  transition:background var(--ease),border-color var(--ease),transform var(--ease);
}
.drawer-chip svg{stroke:var(--brand-600);}
.drawer-chip:hover{background:var(--brand-050);border-color:rgba(26,95,208,.25);transform:translateY(-1px);}
.drawer-chip.active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;}
.drawer-chip.active svg{stroke:#fff;}
.drawer-cta{width:100%;margin-top:14px;}
@media (min-width:992px){ .nav-drawer{display:none !important;} }
@media (max-width:991.98px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .brand-text{font-size:15px;}
  .nav-card{gap:10px;}
}
@media (max-width:575.98px){
  .brand-text{font-size:14px;}
  .brand-mark{width:36px;height:36px;}
  .icon-btn{display:none;}
}

/* ============ 页头横幅 ============ */
.page-hero{
  position:relative;
  margin-top:8px;
  border-radius:24px;
  overflow:hidden;
  min-height:260px;
  display:flex;
  align-items:center;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(255,255,255,.94) 0%,rgba(255,255,255,.82) 58%,rgba(255,255,255,.66) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:48px 44px;max-width:760px;}
.breadcrumb-x{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-400);margin-bottom:14px;
}
.breadcrumb-x a{color:var(--ink-400);}
.breadcrumb-x a:hover{color:var(--brand-600);}
.breadcrumb-x svg{stroke:var(--ink-400);}
.breadcrumb-x .current{color:var(--brand-600);font-weight:600;}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.25;
  letter-spacing:0;
}
.page-hero .hero-sub{
  margin-top:14px;
  font-size:16.5px;
  color:var(--ink-600);
  max-width:560px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--ink-600);
  box-shadow:var(--shadow-1);
}
.tag-pill svg{stroke:var(--brand-600);}
@media (max-width:767.98px){
  .page-hero-inner{padding:32px 22px;}
  .page-hero{min-height:220px;border-radius:20px;}
}

/* ============ 板块 ============ */
.section{padding:96px 0 0;}
.section:first-of-type{padding-top:72px;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:30px;
}
.section-title{
  position:relative;
  font-size:clamp(24px,2.8vw,32px);
  line-height:1.3;
  padding-left:16px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:4px;background:var(--brand-600);
}
.section-desc{margin-top:10px;font-size:15px;color:var(--ink-400);max-width:640px;padding-left:16px;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand-600);white-space:nowrap;
}
.link-more svg{stroke:currentColor;transition:transform var(--ease),stroke var(--ease);}
.link-more:hover svg{transform:translateX(3px);stroke:var(--accent);}
@media (max-width:767.98px){
  .section{padding-top:56px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
}

/* ============ 评分卡 ============ */
.score-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.score-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);
  padding:28px;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.score-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:rgba(26,95,208,.3);}
.score-top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.score-name{font-size:17px;font-weight:700;color:var(--ink-900);}
.score-badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 10px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-600);
  font-size:12px;font-weight:700;
}
.score-num{
  display:flex;align-items:baseline;gap:6px;
  margin:18px 0 12px;
  font-size:clamp(36px,4vw,44px);
  font-weight:800;color:var(--ink-900);line-height:1;
}
.score-num span{font-size:14px;font-weight:600;color:var(--ink-400);}
.score-bar{height:8px;border-radius:999px;background:var(--brand-050);overflow:hidden;}
.score-bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand-600),var(--brand-700));}
.score-note{margin-top:16px;font-size:14.5px;color:var(--ink-600);}
.score-foot{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);
}
.score-foot svg{stroke:var(--support);}
@media (max-width:991.98px){ .score-grid{grid-template-columns:1fr 1fr;gap:18px;} }
@media (max-width:767.98px){ .score-grid{grid-template-columns:1fr;} }

/* ============ 对比条 ============ */
.compare-wrap{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-2);
  padding:14px;
}
.compare-row{
  display:grid;
  grid-template-columns:200px 1fr 96px;
  align-items:center;
  gap:22px;
  padding:20px 22px;
  border-radius:var(--r-md);
  transition:background var(--ease),transform var(--ease);
}
.compare-row + .compare-row{margin-top:4px;}
.compare-row:hover{background:var(--brand-050);transform:translateY(-2px);}
.compare-label{font-size:16.5px;font-weight:700;color:var(--ink-900);}
.compare-desc{font-size:15px;color:var(--ink-600);}
.compare-state{
  justify-self:end;
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:700;
  padding:5px 11px;border-radius:999px;
  background:#EAFBF4;color:#0E9B72;white-space:nowrap;
}
.compare-state.mid{background:var(--accent-050);color:#D9502A;}
@media (max-width:991.98px){
  .compare-row{grid-template-columns:150px 1fr;gap:14px;padding:16px 18px;}
  .compare-state{grid-column:1 / -1;justify-self:start;}
}
@media (max-width:575.98px){
  .compare-row{grid-template-columns:1fr;gap:8px;}
  .compare-label{font-size:15.5px;}
}

/* ============ 实测图文 ============ */
.split-media{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:32px;
  align-items:center;
}
.split-media img{
  border-radius:var(--r-md);
  box-shadow:var(--shadow-2);
  border:1px solid var(--line);
  width:100%;
  object-fit:cover;
  aspect-ratio:16/11;
}
.split-body h3{font-size:20px;line-height:1.4;margin-bottom:14px;}
.split-body p{font-size:15.5px;}
.mini-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:22px;}
.mini-stat{
  flex:1 1 140px;
  background:var(--brand-050);
  border-radius:var(--r-md);
  padding:16px 18px;
  border:1px solid rgba(26,95,208,.12);
}
.mini-stat strong{display:block;font-size:22px;font-weight:800;color:var(--brand-700);line-height:1.2;}
.mini-stat span{font-size:13px;color:var(--ink-400);}
@media (max-width:991.98px){ .split-media{grid-template-columns:1fr;gap:24px;} }

/* ============ 要点清单 ============ */
.check-list{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}
.check-item{
  display:flex;gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  padding:22px 24px;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.check-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(255,106,61,.35);}
.check-icon{
  flex:0 0 auto;width:36px;height:36px;border-radius:12px;
  background:var(--accent-050);
  display:flex;align-items:center;justify-content:center;
}
.check-icon svg{stroke:var(--accent);}
.check-item h3{font-size:16.5px;font-weight:700;line-height:1.45;margin-bottom:6px;}
.check-item p{font-size:14.5px;margin:0;color:var(--ink-600);}
@media (max-width:767.98px){ .check-list{grid-template-columns:1fr;} }

/* ============ FAQ ============ */
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:start;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.faq-item[open]{border-color:rgba(26,95,208,.28);box-shadow:var(--shadow-2);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:18px 22px;
  font-size:17px;font-weight:700;color:var(--ink-900);
  transition:background var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--brand-050);}
.faq-sign{
  flex:0 0 auto;width:22px;height:22px;position:relative;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:2px;
}
.faq-sign::before{left:4px;right:4px;top:10px;height:2px;}
.faq-sign::after{top:4px;bottom:4px;left:10px;width:2px;transition:transform var(--ease),opacity var(--ease);}
.faq-item[open] .faq-sign::after{transform:scaleY(0);opacity:0;}
.faq-answer{
  padding:0 24px 22px 24px;
  border-left:4px solid var(--accent);
  margin-left:22px;
  font-size:15.5px;line-height:1.8;color:var(--ink-600);
}
@media (max-width:991.98px){ .faq-list{grid-template-columns:1fr;} }

/* ============ CTA ============ */
.cta-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:24px;
  box-shadow:var(--shadow-2);
  padding:40px;
  display:grid;
  grid-template-columns:6fr 4fr;
  gap:28px;
  align-items:center;
}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;}
.cta-panel p{margin-top:12px;font-size:15.5px;color:var(--ink-600);}
.cta-actions{display:flex;gap:14px;justify-content:flex-end;flex-wrap:wrap;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 24px;
  border-radius:var(--r-sm);
  background:var(--surface);
  border:1.5px solid var(--brand-600);
  color:var(--brand-600);
  font-size:15px;font-weight:700;
  transition:background var(--ease),color var(--ease),transform var(--ease);
}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px);}
@media (max-width:991.98px){
  .cta-panel{grid-template-columns:1fr;padding:28px;}
  .cta-actions{justify-content:flex-start;}
  .cta-actions .btn-accent,.cta-actions .btn-ghost{width:100%;}
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  background:var(--footer-bg);
  color:var(--footer-text);
  padding:64px 0 32px;
  padding-bottom:104px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;font-size:16px;font-weight:800;}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);}
.footer-desc{font-size:14px;line-height:1.75;color:var(--footer-text);max-width:300px;}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:var(--footer-text);font-size:14px;transition:color var(--ease),transform var(--ease);}
.footer-links a:hover{color:var(--accent);transform:translateX(2px);}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;}
.footer-contact > div{display:flex;align-items:center;gap:9px;}
.footer-contact svg{stroke:var(--footer-text);flex:0 0 auto;}
.footer-bottom{
  margin-top:36px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:var(--ink-400);
}
@media (min-width:992px){ .site-footer{padding-bottom:64px;} }
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .site-footer{padding-top:48px;}
}

/* ============ 移动端转化条 ============ */
.mobile-cta-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:none;
  align-items:center;justify-content:space-between;gap:12px;
  height:64px;padding:0 16px;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 18px rgba(19,48,102,.08);
}
.mobile-cta-bar span{font-size:13px;color:var(--ink-600);line-height:1.35;}
.mobile-cta-bar .btn-accent{height:44px;padding:0 18px;font-size:14px;flex:0 0 auto;}
@media (max-width:991.98px){ .mobile-cta-bar{display:flex;} }

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

/* roulang page: category4 */
:root{
  --brand-600:#1A5FD0;
  --brand-700:#144BA8;
  --brand-050:#EEF4FF;
  --accent:#FF6A3D;
  --accent-050:#FFF0EA;
  --support:#12B886;
  --ink-900:#0F1B2D;
  --ink-600:#44546B;
  --ink-400:#8595AB;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E4EAF4;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 2px 8px rgba(19,48,102,.05);
  --shadow-2:0 8px 24px rgba(19,48,102,.08);
  --shadow-3:0 16px 40px rgba(19,48,102,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
}
img{max-width:100%;display:block;}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:800;letter-spacing:0;}
p{margin:0;}
a{color:var(--brand-600);text-decoration:none;transition:color 220ms var(--ease),border-color 220ms var(--ease),transform 220ms var(--ease),background 220ms var(--ease);}
a:hover{color:var(--brand-700);}
button{font:inherit;cursor:pointer;}
ul{margin:0;padding:0;list-style:none;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(26,95,208,.28);outline-offset:2px;}
.container{width:100%;max-width:1240px;padding-left:32px;padding-right:32px;margin:0 auto;}
@media (max-width:1199px){.container{padding-left:24px;padding-right:24px;}}
@media (max-width:767px){.container{padding-left:16px;padding-right:16px;}}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:120;padding-top:16px;}
.nav-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow-2);
  padding:10px 14px;
  display:flex;
  align-items:center;
  gap:16px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:var(--brand-050);
  display:inline-flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.brand-text{font-size:17px;font-weight:800;color:var(--ink-900);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap;}
.nav-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 12px;border-radius:12px;
  font-size:14.5px;font-weight:600;color:var(--ink-600);
  white-space:nowrap;
  transition:background 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease);
}
.nav-chip svg{stroke:currentColor;flex:0 0 auto;}
.nav-chip:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px);}
.nav-chip.active{background:var(--brand-600);color:#fff;}
.nav-chip.active:hover{background:var(--brand-700);color:#fff;}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-600);transition:background 220ms var(--ease),color 220ms var(--ease),border-color 220ms var(--ease);
}
.icon-btn svg{stroke:currentColor;}
.icon-btn:hover{background:var(--brand-050);color:var(--brand-700);border-color:rgba(26,95,208,.3);}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);align-items:center;justify-content:center;color:var(--ink-900);
}
.menu-toggle svg{stroke:currentColor;}
.mobile-drawer{display:none;}
.mobile-drawer.open{display:block;margin-top:12px;background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-3);padding:18px;}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px;}
.drawer-chip{
  display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:8px;
  height:76px;padding:12px 14px;border-radius:14px;background:var(--bg);
  font-size:14.5px;font-weight:600;color:var(--ink-600);
}
.drawer-chip svg{stroke:currentColor;}
.drawer-chip.active{background:var(--brand-600);color:#fff;}
.drawer-chip:hover{background:var(--brand-050);color:var(--brand-700);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:12px;
  font-size:15.5px;font-weight:700;border:1.5px solid transparent;
  transition:background 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.btn svg{stroke:currentColor;flex:0 0 auto;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,106,61,.24);}
.btn-primary:hover{background:#F25526;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:focus-visible{outline:3px solid rgba(255,106,61,.35);outline-offset:2px;}
.btn-ghost{background:var(--surface);color:var(--brand-600);border-color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px;border-radius:10px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14.5px;}
.link-arrow svg{stroke:currentColor;transition:transform 220ms var(--ease);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ============ 页面头图 ============ */
.page-hero{
  position:relative;margin-top:24px;border-radius:24px;overflow:hidden;
  min-height:258px;display:flex;align-items:center;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.page-hero::before{content:'';position:absolute;inset:0;background:rgba(255,255,255,.82);}
.page-hero::after{
  content:'';position:absolute;right:-80px;top:-90px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(26,95,208,.16) 0%,rgba(238,244,255,0) 68%);
}
.page-hero .inner{position:relative;z-index:2;padding:44px 44px;max-width:780px;}
.crumb{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--ink-400);margin-bottom:14px;flex-wrap:wrap;}
.crumb a{color:var(--ink-400);}
.crumb a:hover{color:var(--brand-600);}
.crumb svg{stroke:var(--ink-400);flex:0 0 auto;}
.crumb .current{color:var(--brand-600);font-weight:600;}
.page-hero h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:800;}
.page-hero .lead{margin-top:16px;font-size:16.5px;color:var(--ink-600);max-width:640px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;background:var(--surface);
  border:1px solid var(--line);font-size:13.5px;font-weight:600;color:var(--ink-600);
}
.tag svg{stroke:var(--support);}

/* ============ 板块基础 ============ */
.section{padding:88px 0 0;}
.section:last-of-type{padding-bottom:96px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.section-title{position:relative;padding-left:14px;font-size:clamp(24px,2.8vw,32px);line-height:1.3;}
.section-title::before{content:'';position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--brand-600);}
.section-desc{margin-top:12px;max-width:720px;font-size:16px;color:var(--ink-600);}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  background:var(--accent-050);color:var(--accent);font-size:12.5px;font-weight:700;margin-bottom:14px;
}

/* ============ 检索面板 ============ */
.search-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:24px;
  box-shadow:var(--shadow-2);padding:32px;display:grid;
  grid-template-columns:0.85fr 1.15fr;gap:36px;align-items:center;
}
.search-panel h2{font-size:clamp(22px,2.4vw,28px);line-height:1.35;}
.search-panel p{margin-top:12px;font-size:15.5px;color:var(--ink-600);}
.faq-search{
  display:flex;align-items:center;gap:10px;background:var(--bg);
  border:1.5px solid var(--line);border-radius:999px;padding:8px 8px 8px 20px;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.faq-search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 4px rgba(26,95,208,.1);}
.faq-search svg{stroke:var(--ink-400);flex:0 0 auto;}
.faq-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  height:42px;font-size:15.5px;color:var(--ink-900);
}
.faq-search input::placeholder{color:var(--ink-400);}
.search-hint{margin-top:14px;font-size:13.5px;color:var(--ink-400);}
.search-hint span{color:var(--brand-600);font-weight:600;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.tag-chip{
  padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
  font-size:13.5px;font-weight:600;color:var(--ink-600);
  transition:background 220ms var(--ease),color 220ms var(--ease),border-color 220ms var(--ease),transform 220ms var(--ease);
}
.tag-chip:hover{background:var(--brand-050);color:var(--brand-700);border-color:rgba(26,95,208,.3);transform:translateY(-1px);}

/* ============ FAQ 双列 ============ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px;align-items:start;}
.faq-col{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:16px;box-shadow:var(--shadow-1);overflow:hidden;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease),transform 220ms var(--ease);
}
.faq-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.faq-item.open{border-color:rgba(26,95,208,.32);box-shadow:var(--shadow-2);}
.faq-item.open::before{content:'';position:absolute;left:0;top:16px;bottom:16px;width:4px;background:var(--accent);border-radius:0 4px 4px 0;}
.faq-head{margin:0;font-size:17px;font-weight:700;}
.faq-q{
  width:100%;display:flex;align-items:center;gap:12px;background:none;border:0;
  padding:18px 22px;text-align:left;font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.45;
}
.faq-q .q-index{font-size:13px;font-weight:700;color:var(--accent);flex:0 0 auto;}
.faq-sign{
  margin-left:auto;width:26px;height:26px;border-radius:50%;background:var(--brand-050);color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
  font-size:16px;font-weight:700;line-height:1;
  transition:transform 220ms var(--ease),background 220ms var(--ease),color 220ms var(--ease);
}
.faq-item.open .faq-sign{background:var(--accent-050);color:var(--accent);transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease);}
.faq-a p{padding:0 24px 20px 22px;font-size:15.5px;line-height:1.8;color:var(--ink-600);}
.faq-empty{
  display:none;padding:36px 24px;text-align:center;background:var(--surface);
  border:1px dashed var(--line);border-radius:18px;color:var(--ink-400);font-size:15px;
}
.faq-empty.show{display:block;}
.faq-item.is-hidden{display:none;}

/* 联系卡 */
.contact-card{
  background:var(--brand-050);border:1px solid rgba(26,95,208,.14);
  border-radius:18px;padding:26px;
}
.contact-card .c-icon{
  width:44px;height:44px;border-radius:14px;background:var(--surface);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.contact-card .c-icon svg{stroke:var(--brand-600);}
.contact-card h3{font-size:17px;line-height:1.45;}
.contact-card p{margin-top:8px;font-size:14.5px;color:var(--ink-600);}
.contact-card .btn{margin-top:18px;}

/* ============ 解答范围 ============ */
.scope-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.scope-card{
  display:flex;gap:18px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-1);padding:26px;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.scope-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:rgba(26,95,208,.28);}
.scope-icon{
  width:48px;height:48px;border-radius:14px;background:var(--brand-050);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.scope-icon svg{stroke:var(--brand-600);}
.scope-card h3{font-size:17.5px;line-height:1.45;}
.scope-card p{margin-top:8px;font-size:15px;color:var(--ink-600);}

/* ============ 咨询流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow-1);padding:26px;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:rgba(26,95,208,.28);}
.step-no{
  width:34px;height:34px;border-radius:50%;background:var(--accent);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;margin-bottom:16px;
}
.step h3{font-size:17px;line-height:1.45;}
.step p{margin-top:8px;font-size:14.5px;color:var(--ink-600);}

/* ============ 表单 ============ */
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:24px;
  box-shadow:var(--shadow-2);padding:40px;display:grid;
  grid-template-columns:0.9fr 1.1fr;gap:44px;
}
.form-intro h2{font-size:clamp(22px,2.4vw,28px);line-height:1.35;}
.form-intro p{margin-top:14px;font-size:15.5px;color:var(--ink-600);}
.form-points{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.form-points li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-600);}
.form-points li svg{stroke:var(--support);flex:0 0 auto;margin-top:5px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:12px;background:var(--surface);
  font-family:inherit;font-size:15.5px;color:var(--ink-900);
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.field input,.field select{height:48px;padding:0 16px;}
.field textarea{min-height:124px;padding:12px 16px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(26,95,208,.12);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-note{margin-top:14px;font-size:13px;color:var(--ink-400);}
.form-msg{margin-top:14px;font-size:14.5px;font-weight:600;color:var(--support);display:none;}
.form-msg.show{display:block;}

/* ============ 关联链接卡 ============ */
.link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.link-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.link-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:rgba(26,95,208,.3);}
.link-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.link-card .body{padding:24px;}
.link-card h3{font-size:17.5px;line-height:1.45;}
.link-card p{margin-top:10px;font-size:15px;color:var(--ink-600);}
.link-card .link-arrow{margin-top:16px;}

/* ============ CTA ============ */
.cta-card{
  position:relative;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:24px;
  box-shadow:var(--shadow-2);padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-card::after{
  content:'';position:absolute;right:-120px;bottom:-140px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,61,.16) 0%,rgba(255,240,234,0) 70%);
}
.cta-card .cta-text{position:relative;z-index:2;max-width:640px;}
.cta-card h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;}
.cta-card p{margin-top:12px;font-size:15.5px;color:var(--ink-600);}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{margin-top:96px;background:#0D2A4A;color:#C7D6EA;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);}
.footer-brand .brand-text{color:#fff;font-size:17px;font-weight:800;}
.footer-desc{font-size:14px;line-height:1.8;color:#C7D6EA;max-width:320px;}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:#C7D6EA;font-size:14px;width:fit-content;}
.footer-links a:hover{color:#FF6A3D;transform:translateX(2px);}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;}
.footer-contact div{display:flex;align-items:center;gap:8px;}
.footer-contact svg{stroke:#8595AB;flex:0 0 auto;}
.footer-bottom{
  margin-top:24px;border-top:1px solid rgba(255,255,255,.1);
  padding:24px 0 30px;font-size:12.5px;color:#8595AB;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}

/* ============ 移动端底部转化条 ============ */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;height:64px;z-index:110;
  background:var(--surface);border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(19,48,102,.08);
  display:none;align-items:center;gap:12px;padding:0 16px;
}
.mobile-cta span{font-size:13.5px;color:var(--ink-600);flex:1;min-width:0;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .search-panel{grid-template-columns:1fr;gap:24px;}
  .form-card{grid-template-columns:1fr;gap:32px;}
  .steps{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .menu-toggle{display:inline-flex;}
  .nav-actions .btn{display:none;}
  .scope-grid{grid-template-columns:1fr;}
  .link-cards{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;gap:12px;}
  .page-hero .inner{padding:36px 28px;}
  .section{padding-top:72px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .brand-text{font-size:15.5px;}
  .page-hero{min-height:auto;margin-top:16px;border-radius:20px;}
  .page-hero .inner{padding:28px 20px;}
  .page-hero .lead{font-size:15.5px;}
  .section{padding-top:56px;}
  .section:last-of-type{padding-bottom:72px;}
  .search-panel{padding:22px;border-radius:20px;}
  .faq-search{padding:6px 6px 6px 16px;}
  .faq-search input{height:38px;font-size:15px;}
  .faq-search .btn{display:none;}
  .form-card{padding:24px;border-radius:20px;}
  .field-row{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .cta-card{padding:26px;border-radius:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .btn{height:46px;}
  .mobile-cta{display:flex;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-desc{max-width:none;}
  .footer-bottom{padding-bottom:88px;}
  .contact-card .btn{width:100%;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .drawer-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important;}
}