/* roulang page: index */
:root{
  --brand:#2F6BFF;
  --brand-dark:#1D4FD8;
  --brand-light:#EAF1FF;
  --accent:#FF7A45;
  --accent-deep:#B5481D;
  --accent-light:#FFF1E9;
  --ink:#0E1726;
  --text:#48566B;
  --muted:#7C889B;
  --line:#E3E9F2;
  --line-soft:#E9EEF7;
  --bg:#F7F9FD;
  --card:#FFFFFF;
  --ok:#16A34A;
  --warn:#E5484D;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-xl:26px;
  --r-full:999px;
  --sh-1:0 1px 2px rgba(16,32,64,.05), 0 10px 26px -14px rgba(16,32,64,.18);
  --sh-2:0 18px 40px -18px rgba(47,107,255,.35);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:15.5px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border:0;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:3px solid rgba(47,107,255,.35);outline-offset:2px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .container{max-width:1280px;}
}

/* ============ 顶部命令栏 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{
  box-shadow:0 8px 24px -18px rgba(16,32,64,.45);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:64px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:28px;
  height:28px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 6px 14px -8px rgba(47,107,255,.9);
}
.brand-mark svg{width:16px;height:16px;fill:#fff;}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.15;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
}
.brand-sub{
  font-size:10.5px;
  font-weight:500;
  color:var(--muted);
  letter-spacing:.04em;
  margin-top:2px;
}
.main-nav{flex:1 1 auto;}
.main-nav ul{
  display:flex;
  align-items:center;
  gap:2px;
}
.main-nav a{
  position:relative;
  display:block;
  padding:8px 12px;
  font-size:15px;
  color:var(--text);
  border-radius:var(--r-s);
  transition:color .16s ease,background-color .16s ease;
}
.main-nav a:hover{color:var(--brand);background:var(--brand-light);}
.main-nav a.is-active{color:var(--ink);font-weight:600;}
.main-nav a.is-active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}
.header-right{
  display:flex;
  align-items:center;
  gap:14px;
  flex:0 0 auto;
}
.command-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:300px;
  height:40px;
  padding:0 10px 0 12px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#FBFCFE;
  transition:border-color .16s ease,box-shadow .16s ease,background-color .16s ease;
}
.command-search:focus-within{
  border-color:var(--brand);
  background:#fff;
  box-shadow:0 0 0 3px rgba(47,107,255,.14);
}
.command-search svg{width:16px;height:16px;stroke:var(--muted);fill:none;stroke-width:1.8;flex:0 0 auto;}
.command-search input{
  flex:1 1 auto;
  min-width:0;
  border:0;
  background:transparent;
  font-size:13.5px;
  color:var(--ink);
  outline:none;
  padding:0;
}
.command-search input::placeholder{color:var(--muted);}
.command-search kbd{
  flex:0 0 auto;
  font-family:inherit;
  font-size:11px;
  color:var(--muted);
  background:#fff;
  border:1px solid var(--line);
  border-radius:6px;
  padding:1px 6px;
  line-height:1.5;
}
.header-divider{
  width:1px;
  height:22px;
  background:var(--line);
  flex:0 0 auto;
}
.header-link{
  font-size:14px;
  color:var(--text);
  white-space:nowrap;
  transition:color .16s ease;
}
.header-link:hover{color:var(--brand);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-m);
  border:1px solid transparent;
  white-space:nowrap;
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,color .16s ease,border-color .16s ease;
}
.btn-primary{
  background:var(--brand);
  color:#fff;
  box-shadow:0 10px 22px -16px rgba(47,107,255,.9);
}
.btn-primary:hover{
  background:#3a74ff;
  transform:translateY(-1px);
  box-shadow:var(--sh-2);
}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-outline{
  background:#fff;
  border-color:var(--line);
  color:var(--ink);
}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);}
.btn-ghost{
  height:46px;
  padding:0 6px;
  background:transparent;
  color:var(--brand);
  font-size:15px;
  font-weight:600;
  border:0;
}
.btn-ghost .arrow{
  display:inline-block;
  transition:transform .16s ease;
}
.btn-ghost:hover .arrow{transform:translateX(3px);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.icon-btn{
  display:none;
  width:40px;
  height:40px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  transition:border-color .16s ease,color .16s ease;
}
.icon-btn svg{width:18px;height:18px;stroke:var(--text);fill:none;stroke-width:1.9;stroke-linecap:round;}
.icon-btn:hover{border-color:var(--brand);}
.icon-btn:hover svg{stroke:var(--brand);}

/* ============ 抽屉 ============ */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(14,23,38,.38);
  opacity:0;
  pointer-events:none;
  transition:opacity .2s ease;
  z-index:130;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.nav-drawer{
  position:fixed;
  top:0;
  right:0;
  z-index:140;
  width:330px;
  max-width:88vw;
  height:100%;
  background:#fff;
  padding:18px 20px 28px;
  display:flex;
  flex-direction:column;
  gap:18px;
  transform:translateX(102%);
  transition:transform .24s ease;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.drawer-head strong{font-size:15px;font-weight:600;}
.drawer-close{
  width:36px;height:36px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:10px;
}
.drawer-close svg{width:16px;height:16px;stroke:var(--text);stroke-width:2;fill:none;stroke-linecap:round;}
.drawer-search{width:100%;}
.drawer-nav ul{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  display:block;
  padding:12px 14px;
  border-radius:var(--r-m);
  font-size:15px;
  color:var(--text);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:var(--brand-light);color:var(--brand);}
.drawer-nav a.is-active{
  background:var(--brand-light);
  color:var(--brand);
  font-weight:600;
  border-color:#D8E4FF;
}
.drawer-cta{width:100%;}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:64px 0 88px;
  background:var(--bg) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(247,249,253,.95),rgba(247,249,253,.99));
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-light);
  border-radius:var(--r-full);
  padding:5px 12px;
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--brand);
}
.hero h1{
  font-size:clamp(30px,4.2vw,48px);
  line-height:1.18;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
  margin-bottom:18px;
}
.hero-sub{
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  max-width:560px;
  margin-bottom:28px;
}
.hero-actions{
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
  margin-bottom:32px;
}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  border-top:1px solid var(--line);
  padding-top:18px;
  max-width:620px;
}
.trust-row li{
  position:relative;
  font-size:13px;
  color:var(--muted);
  padding-right:18px;
  margin-right:18px;
}
.trust-row li:not(:last-child)::after{
  content:"";
  position:absolute;
  right:0;
  top:50%;
  transform:translateY(-50%);
  width:1px;
  height:12px;
  background:var(--line);
}
.hero-visual{display:flex;justify-content:flex-end;}
.phone-wrap{
  position:relative;
  padding:22px;
  border-radius:36px;
  background-image:radial-gradient(rgba(47,107,255,.14) 1px,transparent 1px);
  background-size:14px 14px;
}
.phone{
  position:relative;
  width:318px;
  max-width:100%;
  aspect-ratio:9/16;
  border-radius:var(--r-xl);
  overflow:hidden;
  background:var(--brand-light);
  box-shadow:0 30px 60px -34px rgba(16,32,64,.55);
}
.phone-media{position:absolute;inset:0;}
.phone-media .pm-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
}
.phone-media .pm-fg{
  position:absolute;inset:0;
  background:url('/assets/images/coverpic/cover-2.webp') center/cover no-repeat;
  opacity:.52;
  mix-blend-mode:multiply;
}
.phone-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,23,38,.12) 0%,rgba(14,23,38,.02) 38%,rgba(14,23,38,.78) 100%);
}
.play-btn{
  position:absolute;
  left:50%;top:46%;
  transform:translate(-50%,-50%);
  width:62px;height:62px;
  border-radius:50%;
  background:rgba(255,255,255,.92);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 30px -12px rgba(14,23,38,.6);
  transition:transform .18s ease,background-color .18s ease;
}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06);background:#fff;}
.play-btn svg{width:20px;height:20px;fill:var(--brand);margin-left:3px;}
.phone-duration{
  position:absolute;
  right:14px;
  top:14px;
  font-size:11.5px;
  color:#fff;
  background:rgba(14,23,38,.55);
  border-radius:var(--r-full);
  padding:2px 9px;
  font-variant-numeric:tabular-nums;
}
.phone-bottom{
  position:absolute;
  left:16px;right:16px;bottom:16px;
  color:#fff;
}
.phone-title{
  font-size:14px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:10px;
}
.phone-progress{
  height:3px;
  border-radius:3px;
  background:rgba(255,255,255,.35);
  overflow:hidden;
}
.phone-progress span{
  display:block;
  width:42%;
  height:100%;
  border-radius:3px;
  background:var(--accent);
}

/* ============ 板块通用 ============ */
.block{margin-top:88px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}
.section-head h2{
  font-size:30px;
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:8px;
}
.section-head p{
  font-size:14.5px;
  color:var(--text);
  max-width:620px;
}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
  white-space:nowrap;
  transition:gap .16s ease;
}
.link-arrow:hover{gap:10px;}
.scroll-arrows{display:flex;gap:10px;flex:0 0 auto;}
.round-btn{
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  background:#fff;
  display:flex;align-items:center;justify-content:center;
  transition:border-color .16s ease,box-shadow .16s ease,transform .16s ease;
}
.round-btn svg{width:16px;height:16px;stroke:var(--text);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.round-btn:hover{border-color:var(--brand);box-shadow:var(--sh-1);transform:translateY(-1px);}
.round-btn:hover svg{stroke:var(--brand);}

/* ============ 必看片段 ============ */
.clip-scroller{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:10px;
  scrollbar-width:none;
}
.clip-scroller::-webkit-scrollbar{display:none;}
.clip-card{
  position:relative;
  flex:0 0 auto;
  width:240px;
  aspect-ratio:9/16;
  border-radius:var(--r-l);
  overflow:hidden;
  scroll-snap-align:start;
  border:1px solid var(--line-soft);
  background:var(--brand-light);
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.clip-card img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .6s ease;
}
.clip-card::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,23,38,.32) 0%,rgba(14,23,38,0) 42%,rgba(14,23,38,.8) 100%);
}
.clip-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.clip-card:hover img{transform:scale(1.03);}
.clip-chip{
  position:absolute;
  left:12px;top:12px;
  z-index:2;
  font-size:11.5px;
  font-weight:600;
  color:var(--accent-deep);
  background:var(--accent-light);
  border-radius:var(--r-full);
  padding:3px 10px;
}
.clip-time{
  position:absolute;
  right:12px;top:12px;
  z-index:2;
  font-size:11.5px;
  color:#fff;
  background:rgba(14,23,38,.55);
  border-radius:var(--r-full);
  padding:2px 8px;
  font-variant-numeric:tabular-nums;
}
.clip-foot{
  position:absolute;
  left:14px;right:14px;bottom:14px;
  z-index:2;
  color:#fff;
}
.clip-foot h3{
  font-size:14.5px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:4px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.clip-views{font-size:11.5px;color:rgba(255,255,255,.72);}

/* ============ 内容清单 ============ */
.list-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:start;
}
.list-visual{
  position:sticky;
  top:88px;
  border-radius:var(--r-l);
  overflow:hidden;
  background:var(--brand-light);
  box-shadow:var(--sh-1);
}
.list-visual img{width:100%;aspect-ratio:3/4;object-fit:cover;}
.steps li{
  display:grid;
  grid-template-columns:64px 1fr 24px;
  gap:16px;
  align-items:start;
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.steps li:first-child{padding-top:0;}
.steps li:last-child{border-bottom:0;}
.step-num{
  font-size:34px;
  line-height:1;
  font-weight:700;
  color:#C9DAFF;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.step-body h3{
  font-size:19px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:6px;
}
.step-body p{
  font-size:14.5px;
  color:var(--text);
  margin-bottom:10px;
}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  display:inline-block;
  font-size:12px;
  font-weight:500;
  color:var(--brand);
  background:var(--brand-light);
  border-radius:var(--r-full);
  padding:4px 10px;
  line-height:1.5;
}
.chip-warm{color:var(--accent-deep);background:var(--accent-light);}
.step-arrow{
  display:flex;
  align-items:center;
  justify-content:center;
  width:24px;height:24px;
  margin-top:6px;
  color:var(--muted);
  transition:transform .16s ease,color .16s ease;
}
.step-arrow svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.steps li:hover .step-arrow{color:var(--brand);transform:translateX(3px);}

/* ============ 数据条 ============ */
.stat-bar{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  background:var(--brand-light);
  border-radius:var(--r-l);
  padding:30px 8px;
}
.stat{
  position:relative;
  text-align:center;
  padding:0 16px;
}
.stat:not(:last-child)::after{
  content:"";
  position:absolute;
  right:0;top:50%;
  transform:translateY(-50%);
  width:1px;
  height:40px;
  background:rgba(47,107,255,.18);
}
.stat-num{
  display:block;
  font-size:36px;
  line-height:1.1;
  font-weight:700;
  color:var(--brand-dark);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  margin-bottom:6px;
}
.stat-label{font-size:12.5px;color:var(--text);}

/* ============ 双栏错位 ============ */
.split-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:center;
}
.split-media{
  border-radius:var(--r-l);
  overflow:hidden;
  background:var(--brand-light);
  box-shadow:var(--sh-1);
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.split-item{
  padding:8px 0 24px;
}
.split-item h3{
  font-size:21px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:10px;
}
.split-item p{
  font-size:15px;
  color:var(--text);
  margin-bottom:12px;
  max-width:520px;
}
.split-item.offset{margin-left:40px;}

/* ============ 最新信息 ============ */
.news-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.news-card{
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-1);
  display:flex;
  flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.news-cover{
  display:block;
  aspect-ratio:16/9;
  background:var(--brand-light);
  overflow:hidden;
}
.news-cover img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .6s ease;
}
.news-card:hover .news-cover img{transform:scale(1.03);}
.news-body{
  padding:20px 22px 22px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1 1 auto;
}
.news-body h3{
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-body h3 a{transition:color .16s ease;}
.news-body h3 a:hover{color:var(--brand);}
.news-body p{
  font-size:13.5px;
  color:var(--text);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12.5px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.empty-state{
  background:var(--card);
  border:1px dashed #CBD9F2;
  border-radius:var(--r-l);
  padding:56px 24px;
  text-align:center;
}
.empty-state svg{width:38px;height:38px;stroke:#B9CCF2;fill:none;stroke-width:1.6;margin:0 auto 14px;}
.empty-state p{font-size:15px;color:var(--text);margin-bottom:14px;}

/* ============ 口碑 ============ */
.voice-scroller{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:8px;
  scrollbar-width:none;
}
.voice-scroller::-webkit-scrollbar{display:none;}
.voice-card{
  flex:0 0 auto;
  width:340px;
  max-width:82vw;
  background:#F2F5FB;
  border:1px solid var(--line-soft);
  border-radius:var(--r-l);
  padding:24px;
  scroll-snap-align:start;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.quote-mark{
  font-size:34px;
  line-height:1;
  font-weight:700;
  color:#C9DAFF;
  font-family:Georgia,serif;
}
.voice-card p{
  font-size:14.5px;
  color:var(--text);
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.voice-foot{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:auto;
}
.avatar{
  width:34px;height:34px;
  border-radius:50%;
  background:linear-gradient(135deg,#D8E4FF,#B9CCF2);
  color:var(--brand-dark);
  font-size:13px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.voice-who{font-size:13px;color:var(--ink);font-weight:600;line-height:1.4;}
.voice-role{font-size:12px;color:var(--muted);font-weight:400;}
.stars{margin-left:auto;display:flex;gap:2px;}
.stars svg{width:13px;height:13px;fill:var(--brand);}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.faq-head{margin-bottom:28px;}
.faq-head h2{font-size:30px;font-weight:700;line-height:1.25;margin-bottom:8px;}
.faq-head p{font-size:14.5px;color:var(--text);}
.faq-list{
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--r-l);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  min-height:58px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 24px;
  text-align:left;
  font-size:15.5px;
  font-weight:600;
  color:var(--ink);
  transition:color .16s ease,background-color .16s ease;
}
.faq-q:hover{color:var(--brand);background:#FBFCFF;}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:18px;height:18px;
  transition:transform .22s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--muted);
  border-radius:2px;
  transition:background-color .16s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-item.is-open .faq-icon::before,
.faq-item.is-open .faq-icon::after{background:var(--brand);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s ease;
}
.faq-item.is-open .faq-a{max-height:320px;}
.faq-a p{
  padding:0 24px 20px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--text);
  max-width:760px;
}

/* ============ CTA ============ */
.cta-card{
  background:linear-gradient(180deg,#EDF3FF,#E3ECFF);
  border:1px solid #D8E4FF;
  border-radius:var(--r-xl);
  padding:64px 40px;
  text-align:center;
}
.cta-card h2{
  font-size:32px;
  line-height:1.25;
  font-weight:700;
  margin-bottom:14px;
  letter-spacing:-.01em;
}
.cta-card p{
  font-size:15.5px;
  color:var(--text);
  max-width:620px;
  margin:0 auto 28px;
}
.cta-actions{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:18px;
  flex-wrap:wrap;
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  background:#fff;
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{
  font-size:13.5px;
  color:var(--text);
  line-height:1.8;
  max-width:300px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  font-size:14px;
  color:var(--text);
  transition:color .16s ease;
}
.footer-col a:hover{color:var(--brand);}
.footer-col li{font-size:14px;color:var(--text);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{
  font-size:12px;
  color:#98A4B6;
  line-height:1.8;
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .command-search{width:240px;}
  .hero-grid{gap:36px;}
  .news-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1024px){
  .main-nav,.command-search,.header-divider,.header-link{display:none;}
  .icon-btn{display:flex;}
  .header-right{gap:10px;}
  .hero{padding:48px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{justify-content:center;}
  .hero-sub{max-width:none;}
  .phone{width:300px;}
  .list-grid,.split-grid{grid-template-columns:1fr;gap:36px;}
  .list-visual{position:static;max-width:420px;}
  .split-item.offset{margin-left:0;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .block{margin-top:72px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .block{margin-top:56px;}
  .hero{padding:36px 0 56px;}
  .hero h1{font-size:clamp(26px,7vw,32px);}
  .hero-sub{font-size:16px;}
  .trust-row li{font-size:12.5px;padding-right:14px;margin-right:14px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:24px;}
  .section-head h2,.faq-head h2{font-size:24px;}
  .stat-bar{grid-template-columns:1fr 1fr;gap:24px 0;padding:26px 8px;}
  .stat:nth-child(2)::after{display:none;}
  .stat-num{font-size:30px;}
  .news-grid{grid-template-columns:1fr;}
  .steps li{grid-template-columns:48px 1fr;gap:12px;}
  .step-arrow{display:none;}
  .step-num{font-size:26px;}
  .step-body h3{font-size:17px;}
  .cta-card{padding:44px 22px;border-radius:var(--r-l);}
  .cta-card h2{font-size:24px;}
  .clip-card{width:200px;}
  .voice-card{width:290px;padding:20px;}
  .news-card:hover,.clip-card:hover{transform:none;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .site-footer{margin-top:64px;padding-top:48px;}
  .faq-q{padding:14px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 18px;font-size:14px;}
  .scroll-arrows{display:none;}
}
@media (max-width:520px){
  .hero-actions{flex-direction:column;align-items:stretch;gap:10px;}
  .hero-actions .btn{width:100%;}
  .hero-actions .btn-ghost{justify-content:center;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .trust-row{gap:8px 0;}
  .phone{width:100%;max-width:280px;}
  .phone-wrap{padding:16px;}
}

/* roulang page: article */
:root{
  --brand:#2F6BFF;
  --brand-deep:#1D4FD8;
  --brand-soft:#EAF1FF;
  --accent:#FF7A45;
  --accent-soft:#FFF1E9;
  --accent-ink:#B5481D;
  --ink:#0E1726;
  --text:#48566B;
  --muted:#7C889B;
  --line:#E3E9F2;
  --line-soft:#E9EEF7;
  --bg:#F7F9FD;
  --card:#FFFFFF;
  --ok:#16A34A;
  --danger:#E5484D;
  --r-xs:8px;
  --r-sm:12px;
  --r-md:18px;
  --r-lg:26px;
  --sh-1:0 1px 2px rgba(16,32,64,.05), 0 10px 26px -14px rgba(16,32,64,.18);
  --sh-2:0 18px 40px -18px rgba(47,107,255,.35);
  --gap:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:15.5px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
::selection{background:rgba(47,107,255,.18)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid rgba(47,107,255,.55);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(16,32,64,.45)}
.header-inner{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  background:linear-gradient(135deg,#3F78FF,#1D4FD8);flex-shrink:0;
}
.brand-mark svg{width:16px;height:16px;fill:#fff}
.brand-text{display:flex;align-items:baseline;gap:4px;font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap}
.brand-sub{font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.01em}
.main-nav ul{display:flex;align-items:center;gap:24px}
.main-nav a{position:relative;display:inline-block;padding:6px 0;font-size:14.5px;color:var(--text);transition:color .16s ease;white-space:nowrap}
.main-nav a:hover{color:var(--brand)}
.main-nav a.is-active{color:var(--ink);font-weight:600}
.main-nav a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--brand)}
.header-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.command-search{
  display:flex;align-items:center;gap:8px;width:300px;height:40px;padding:0 10px 0 12px;
  border:1px solid var(--line);border-radius:10px;background:#F7F9FD;
  transition:border-color .16s ease,box-shadow .16s ease,background .16s ease;
}
.command-search svg{width:16px;height:16px;flex-shrink:0;fill:none;stroke:var(--muted);stroke-width:1.8;stroke-linecap:round}
.command-search input{
  flex:1;min-width:0;border:0;outline:0;background:transparent;
  font-size:13.5px;color:var(--ink);
}
.command-search input::placeholder{color:#9AA6B8}
.command-search kbd{
  font-family:inherit;font-size:11px;line-height:1;color:var(--muted);
  background:#fff;border:1px solid var(--line);border-radius:6px;padding:4px 5px;white-space:nowrap;
}
.command-search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(47,107,255,.15)}
.header-divider{width:1px;height:22px;background:var(--line)}
.header-link{font-size:14px;color:var(--text);transition:color .16s ease;white-space:nowrap}
.header-link:hover{color:var(--brand)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,color .16s ease,border-color .16s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(16,32,64,.06)}
.btn-primary:hover{background:#2b63f0;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:scale(.99);box-shadow:none}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-outline{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn-outline:hover{border-color:rgba(47,107,255,.45);color:var(--brand)}
.icon-btn{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;align-items:center;justify-content:center;transition:border-color .16s ease}
.icon-btn:hover{border-color:rgba(47,107,255,.45)}
.icon-btn svg{width:20px;height:20px;fill:none;stroke:var(--ink);stroke-width:1.8;stroke-linecap:round}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:22px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:7px;font-size:13px;color:var(--muted)}
.breadcrumb a{transition:color .16s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#C3CCDB}
.crumb-current{max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)}

/* ---------- article ---------- */
.article-shell{padding:26px 0 var(--gap)}
.article-head{max-width:800px;margin:0 auto}
.article-title{font-size:clamp(26px,3.4vw,38px);font-weight:700;line-height:1.28;color:var(--ink);margin-bottom:18px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:#C3CCDB}
.chip{
  display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:500;line-height:1;
  padding:5px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand);
}
.chip-accent{background:var(--accent-soft);color:var(--accent-ink)}
.article-cover{max-width:1000px;margin:30px auto 0;border-radius:var(--r-md);overflow:hidden;background:var(--brand-soft);box-shadow:var(--sh-1)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{margin:0;padding:12px 16px;font-size:13px;color:var(--muted);text-align:center;background:#fff}

.article-body{max-width:800px;margin:40px auto 0;font-size:16.5px;line-height:1.9;color:#2A3546;word-break:break-word}
.article-body p{margin:0 0 18px}
.article-body h2{position:relative;font-size:24px;font-weight:700;color:var(--ink);margin:40px 0 16px;padding-left:14px}
.article-body h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--brand)}
.article-body h3{font-size:20px;font-weight:600;color:var(--ink);margin:30px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:24px 0 10px}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(47,107,255,.32);transition:border-color .16s ease}
.article-body a:hover{border-color:var(--brand)}
.article-body strong{color:var(--ink);font-weight:600}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:6px 0}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{margin:26px 0;padding:16px 20px;background:var(--brand-soft);border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:#2A3546}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:24px auto;max-width:100%}
.article-body figure{margin:24px 0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body thead th{background:var(--brand-soft);color:var(--ink);font-weight:600}
.article-body tbody tr:nth-child(even){background:#F9FBFF}
.article-body pre{background:#F4F7FC;border:1px solid var(--line);border-radius:12px;padding:16px;overflow-x:auto;font-size:14px;line-height:1.7}
.article-body code{background:#F1F5FC;border-radius:6px;padding:2px 6px;font-size:.92em}
.article-body pre code{background:none;padding:0}

.empty-state{
  max-width:800px;margin:0 auto;padding:52px 24px;text-align:center;
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-md);box-shadow:var(--sh-1);
}
.empty-state .empty-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-soft);
}
.empty-state .empty-icon svg{width:24px;height:24px;fill:none;stroke:var(--brand);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.empty-state h2{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:8px}
.empty-state p{font-size:14.5px;color:var(--text);margin-bottom:22px}

.article-tags{max-width:800px;margin:36px auto 0;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.tag{
  display:inline-block;font-size:13px;padding:6px 13px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--text);
  transition:color .16s ease,border-color .16s ease,background .16s ease;
}
.tag:hover{color:var(--brand);border-color:rgba(47,107,255,.42);background:var(--brand-soft)}

/* ---------- related ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap}
.section-head h2{font-size:24px;font-weight:700;color:var(--ink)}
.section-head p{font-size:14px;color:var(--text);margin-top:6px}
.related{max-width:1000px;margin:56px auto 0;padding-top:8px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line-soft);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:8px}
.rel-body h3{font-size:16px;font-weight:600;line-height:1.45;color:var(--ink)}
.rel-body p{
  font-size:13.5px;line-height:1.7;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* ---------- footer nav of article ---------- */
.article-foot{max-width:1000px;margin:44px auto 0;border-top:1px solid var(--line);padding-top:28px}
.back-row{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text)}
.back-row a{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;transition:gap .16s ease}
.back-row a:hover{gap:10px}
.back-row svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:22px}
.post-nav-card{
  display:block;padding:20px 22px;background:#fff;border:1px solid var(--line-soft);
  border-radius:var(--r-md);box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-nav-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(47,107,255,.3)}
.post-nav-card span{display:block;font-size:12px;color:var(--muted);margin-bottom:8px}
.post-nav-card strong{display:block;font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.5}

/* ---------- cta ---------- */
.cta-block{
  max-width:1000px;margin:var(--gap) auto 0;padding:52px 32px;text-align:center;
  background:linear-gradient(180deg,#EFF4FF 0%,#E7EFFF 100%);
  border:1px solid rgba(47,107,255,.14);border-radius:var(--r-lg);
}
.cta-block h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--ink)}
.cta-block p{max-width:600px;margin:14px auto 0;font-size:15px;color:var(--text)}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:16px;margin-top:28px}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand)}
.btn-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .16s ease}
.btn-link:hover svg{transform:translateX(3px)}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 28px;margin-top:var(--gap)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:13.5px;line-height:1.8;color:var(--text);max-width:300px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:var(--text);line-height:1.7}
.footer-col a{font-size:14px;color:var(--text);transition:color .16s ease}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  font-size:12px;color:#93A0B4;
}
.footer-bottom p{margin:0}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .main-nav{display:none}
  .command-search{display:none}
  .header-divider{display:none}
  .header-link{display:none}
  .menu-btn{display:inline-flex}
  .site-header.nav-open .main-nav{
    display:block;position:absolute;left:0;right:0;top:64px;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:0 22px 34px -26px rgba(16,32,64,.5);
    padding:8px 24px 16px;
  }
  .site-header.nav-open .main-nav ul{flex-direction:column;align-items:stretch;gap:0}
  .site-header.nav-open .main-nav li{border-bottom:1px solid var(--line-soft)}
  .site-header.nav-open .main-nav li:last-child{border-bottom:0}
  .site-header.nav-open .main-nav a{display:block;padding:14px 0;font-size:15px}
  .site-header.nav-open .main-nav a.is-active::after{display:none}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--gap:56px}
  .container{padding:0 18px}
  .header-inner{gap:14px}
  .brand-sub{display:none}
  .crumb-bar{padding:16px 0 0}
  .article-shell{padding:20px 0 var(--gap)}
  .article-title{font-size:24px;line-height:1.35}
  .article-cover{margin-top:22px;border-radius:14px}
  .article-body{margin-top:28px;font-size:16px;line-height:1.85}
  .article-body h2{font-size:21px;margin-top:32px}
  .article-body h3{font-size:18px}
  .related-grid{grid-template-columns:1fr;gap:18px}
  .rel-card:hover{transform:none}
  .post-nav{grid-template-columns:1fr;gap:14px}
  .post-nav-card:hover{transform:none}
  .cta-block{padding:38px 20px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-brand p{max-width:none}
  .site-footer{padding:40px 0 24px}
}
@media (max-width:680px){
  .header-right .btn-primary{display:none}
}
@media (max-width:480px){
  .crumb-current{max-width:170px}
  .article-meta{font-size:12.5px;gap:8px}
  .cta-actions .btn{width:100%}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --brand:#2F6BFF;
  --brand-deep:#1D4FD8;
  --brand-soft:#EAF1FF;
  --brand-line:#D8E5FF;
  --accent:#FF7A45;
  --accent-soft:#FFF1E9;
  --accent-ink:#B5481D;
  --ink:#0E1726;
  --text:#2A3546;
  --muted:#48566B;
  --faint:#7C889B;
  --line:#E3E9F2;
  --card-line:#E9EEF7;
  --bg:#F7F9FD;
  --white:#FFFFFF;
  --ok:#16A34A;
  --warn:#E5484D;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-xl:26px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(16,32,64,.05), 0 10px 26px -14px rgba(16,32,64,.18);
  --sh2:0 18px 40px -18px rgba(47,107,255,.35);
  --ease:160ms cubic-bezier(.4,0,.2,1);
  --container:1200px;
}
/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:15.5px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--ease);}
img{max-width:100%;display:block;}
button{font:inherit;color:inherit;}
svg{display:block;}
:focus-visible{outline:3px solid rgba(47,107,255,.35);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-m);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px -12px rgba(47,107,255,.8);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh2);}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand);padding:0 4px;height:auto;}
.btn-ghost .arrow{transition:transform var(--ease);}
.btn-ghost:hover .arrow{transform:translateX(3px);}
.btn-block{width:100%;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(16,32,64,.35);}
.header-inner{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(135deg,#3D78FF,#1D4FD8);
  display:grid;place-items:center;
  box-shadow:0 6px 14px -8px rgba(29,79,216,.9);
}
.brand-mark svg{width:20px;height:20px;fill:#fff;stroke:none;}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap;}
.brand-sub{font-size:11px;font-weight:600;color:var(--faint);margin-left:6px;letter-spacing:0;}
.main-nav ul{display:flex;align-items:center;gap:24px;}
.main-nav a{
  position:relative;display:inline-block;padding:20px 0;
  font-size:14.5px;font-weight:500;color:var(--muted);white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.main-nav a:hover{color:var(--brand);}
.main-nav a.is-active{color:var(--ink);font-weight:600;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:300px;height:40px;padding:0 10px 0 12px;
  background:#F7F9FD;border:1px solid var(--line);border-radius:10px;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.command-search:focus-within{
  background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(47,107,255,.14);
}
.command-search svg{width:16px;height:16px;flex:0 0 auto;fill:none;stroke:var(--faint);stroke-width:1.8;}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:13.5px;color:var(--ink);
}
.command-search input::placeholder{color:var(--faint);}
.command-search kbd{
  font-family:inherit;font-size:11px;color:var(--faint);background:#fff;
  border:1px solid var(--line);border-radius:6px;padding:2px 6px;flex:0 0 auto;
}
.header-divider{width:1px;height:20px;background:var(--line);}
.header-link{font-size:14px;font-weight:500;color:var(--muted);white-space:nowrap;}
.header-link:hover{color:var(--brand);}
.icon-btn{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;cursor:pointer;transition:border-color var(--ease),background var(--ease);
}
.icon-btn:hover{border-color:var(--brand);background:var(--brand-soft);}
.icon-btn svg{width:20px;height:20px;fill:none;stroke:var(--ink);stroke-width:1.8;stroke-linecap:round;}

/* ============ 移动端抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,23,38,.42);z-index:80;
  opacity:0;pointer-events:none;transition:opacity 250ms ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;z-index:90;
  width:min(86vw,340px);height:100%;background:#fff;
  padding:20px;display:flex;flex-direction:column;gap:18px;
  transform:translateX(100%);transition:transform 280ms cubic-bezier(.4,0,.2,1);
  box-shadow:-24px 0 60px -30px rgba(16,32,64,.55);overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-head .brand-text{font-size:16px;}
.drawer .command-search{width:100%;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{padding:13px 2px;font-size:15px;color:var(--ink);border-bottom:1px solid var(--line);}
.drawer-nav a:hover{color:var(--brand);}
.drawer-nav a.is-active{color:var(--brand);font-weight:600;}
.drawer-extra{font-size:14px;color:var(--muted);padding-top:4px;}
.drawer-extra a{color:var(--brand);font-weight:600;}
body.no-scroll{overflow:hidden;}

/* ============ 分类页 Hero ============ */
.cat-hero{
  position:relative;overflow:hidden;
  padding:40px 0 44px;
  background:linear-gradient(180deg,#F1F6FF 0%,#F7F9FD 100%);
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  opacity:.14;pointer-events:none;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(247,249,253,.96) 0%,rgba(247,249,253,.72) 52%,rgba(247,249,253,.35) 100%);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--faint);margin-bottom:22px;}
.breadcrumb a{color:var(--faint);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#B9C4D4;}
.breadcrumb .current{color:var(--muted);font-weight:500;}
.hero-grid{display:grid;grid-template-columns:1.4fr .6fr;gap:44px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:16px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);}
.hero-copy h1{
  font-size:clamp(26px,3.6vw,40px);
  line-height:1.22;font-weight:700;letter-spacing:-.01em;color:var(--ink);
}
.hero-lead{margin-top:16px;font-size:17px;line-height:1.8;color:var(--muted);max-width:640px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px;font-size:13px;color:var(--faint);}
.hero-meta li{display:flex;align-items:center;gap:7px;}
.hero-meta li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);opacity:.6;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:5/4;object-fit:cover;
  border-radius:var(--r-xl);border:1px solid #fff;
  box-shadow:var(--sh1);
}
.hero-badge{
  position:absolute;left:-14px;bottom:18px;
  display:flex;align-items:center;gap:10px;
  background:#fff;border:1px solid var(--card-line);border-radius:14px;
  padding:10px 16px;box-shadow:var(--sh1);
}
.hero-badge strong{font-size:20px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;}
.hero-badge span{font-size:12.5px;color:var(--faint);line-height:1.4;}

/* ============ 筛选 chips ============ */
.filter-bar{padding-top:34px;}
.filter-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;
  font-size:13px;font-weight:500;color:var(--muted);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:8px 16px;cursor:pointer;
  transition:color var(--ease),background var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.chip:hover{color:var(--brand);border-color:var(--brand-line);background:var(--brand-soft);}
.chip.is-active{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:0 8px 18px -12px rgba(47,107,255,.9);}
.chip-accent{background:var(--accent-soft);color:var(--accent-ink);border-color:transparent;}
.chip-accent:hover{background:#FFE6D9;color:var(--accent-ink);border-color:transparent;}
.filter-note{font-size:13px;color:var(--faint);}

/* ============ 卡片网格 ============ */
.grid-section{padding:26px 0 0;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.cat-card{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--card-line);border-radius:var(--r-l);
  overflow:hidden;box-shadow:var(--sh1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.cat-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--brand-line);}
.card-media{aspect-ratio:16/9;background:var(--brand-soft);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 600ms ease;}
.cat-card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-tag{
  align-self:flex-start;font-size:12px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:var(--r-pill);padding:4px 10px;
}
.card-tag.warm{color:var(--accent-ink);background:var(--accent-soft);}
.card-title{font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;}
.card-desc{font-size:14px;line-height:1.7;color:var(--muted);}
.card-foot{
  margin-top:auto;padding-top:13px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:var(--faint);
}
.card-foot .go{display:inline-flex;align-items:center;gap:5px;color:var(--brand);font-weight:600;}
.card-foot .go svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--ease);}
.cat-card:hover .card-foot .go svg{transform:translateX(3px);}

/* ============ 分页视觉 ============ */
.pager{display:flex;align-items:center;justify-content:center;gap:8px;padding:36px 0 0;flex-wrap:wrap;}
.pager a,.pager span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:40px;height:40px;padding:0 14px;
  font-size:14px;color:var(--muted);background:#fff;
  border:1px solid var(--line);border-radius:10px;
  transition:all var(--ease);
}
.pager a:hover{color:var(--brand);border-color:var(--brand);box-shadow:var(--sh1);}
.pager .is-current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
.pager .pager-text{padding:0 16px;}

/* ============ 通用板块 ============ */
.section{padding:78px 0;}
.section-head{max-width:720px;margin:0 auto 38px;text-align:center;}
.section-head h2{font-size:clamp(24px,2.6vw,30px);font-weight:700;line-height:1.3;color:var(--ink);letter-spacing:-.01em;}
.section-head p{margin-top:12px;font-size:15.5px;color:var(--muted);}

/* ============ 流程步骤 ============ */
.steps-wrap{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.steps-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.step{
  position:relative;background:#fff;border:1px solid var(--card-line);
  border-radius:var(--r-l);padding:24px 22px;box-shadow:var(--sh1);
  transition:transform var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh2);}
.step-no{
  font-size:34px;font-weight:700;line-height:1;color:#C9DAFF;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;margin-bottom:14px;
}
.step h3{font-size:16.5px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.step p{font-size:14px;line-height:1.7;color:var(--muted);}

/* ============ 数据条 ============ */
.stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  background:var(--brand-soft);border-radius:var(--r-l);
  padding:28px 8px;margin-top:26px;
}
.stat{text-align:center;padding:6px 14px;border-left:1px solid #D3E2FF;}
.stat:first-child{border-left:0;}
.stat strong{
  display:block;font-size:clamp(24px,2.6vw,30px);font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.2;letter-spacing:-.01em;
}
.stat span{display:block;margin-top:6px;font-size:12.5px;color:var(--muted);}

/* ============ 场景说明双栏 ============ */
.split{display:grid;grid-template-columns:.95fr 1.05fr;gap:44px;align-items:center;}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-l);box-shadow:var(--sh1);background:var(--brand-soft);}
.split-copy h2{font-size:clamp(23px,2.4vw,28px);font-weight:700;color:var(--ink);line-height:1.32;letter-spacing:-.01em;}
.split-copy p{margin-top:14px;font-size:15.5px;line-height:1.8;color:var(--muted);}
.check-list{display:grid;gap:14px;margin-top:24px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:14.5px;color:var(--text);
  background:#fff;border:1px solid var(--card-line);border-radius:var(--r-m);
  padding:14px 16px;box-shadow:var(--sh1);
}
.check-list .tick{
  width:20px;height:20px;flex:0 0 auto;border-radius:50%;
  background:var(--brand-soft);display:grid;place-items:center;margin-top:2px;
}
.check-list .tick svg{width:12px;height:12px;fill:none;stroke:var(--brand);stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;}

/* ============ FAQ ============ */
.faq-list{max-width:880px;margin:0 auto;background:#fff;border:1px solid var(--card-line);border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh1);}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color var(--ease),background var(--ease);
}
.faq-q:hover{color:var(--brand);background:#FAFCFF;}
.faq-icon{
  width:22px;height:22px;flex:0 0 auto;position:relative;
  border-radius:50%;background:var(--brand-soft);
  transition:transform var(--ease),background var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:2px;}
.faq-icon::after{width:2px;height:10px;transition:opacity var(--ease);}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms ease;}
.faq-item.is-open .faq-a{max-height:320px;}
.faq-a p{padding:0 24px 20px;font-size:14.5px;line-height:1.85;color:var(--muted);}

/* ============ CTA ============ */
.cta-card{
  background:linear-gradient(160deg,#EAF1FF 0%,#F6F9FF 62%,#FFF6F1 100%);
  border:1px solid var(--brand-line);border-radius:var(--r-xl);
  padding:56px 32px;text-align:center;
}
.cta-card h2{font-size:clamp(23px,2.8vw,30px);font-weight:700;color:var(--ink);line-height:1.32;letter-spacing:-.01em;}
.cta-card p{margin:14px auto 0;max-width:600px;font-size:15.5px;line-height:1.8;color:var(--muted);}
.cta-actions{display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap;margin-top:28px;}
.link-back{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand);}
.link-back svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--ease);}
.link-back:hover svg{transform:translateX(-3px);}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.15fr;gap:40px;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--muted);max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:14px;color:var(--muted);line-height:1.6;}
.footer-col a{color:var(--muted);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
}
.footer-bottom p{font-size:12px;color:var(--faint);line-height:1.6;}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .command-search{width:230px;}
  .main-nav ul{gap:18px;}
}
@media (max-width:1024px){
  .main-nav,.command-search,.header-divider,.header-link{display:none;}
  .header-right .btn-primary{display:none;}
  .menu-btn{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:30px;}
  .hero-visual{max-width:460px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{grid-template-columns:1fr;gap:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .cat-hero{padding:30px 0 34px;}
  .hero-lead{font-size:15.5px;}
  .hero-meta{gap:8px 16px;}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 0;padding:22px 6px;}
  .stat:nth-child(3){border-left:0;}
  .card-grid{grid-template-columns:1fr;}
  .steps-grid{grid-template-columns:1fr;}
  .cat-card:hover,.step:hover{transform:none;}
  .cta-card{padding:40px 20px;border-radius:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;}
  .faq-q{padding:17px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 18px;}
}
@media (max-width:520px){
  .brand-text{font-size:15.5px;}
  .brand-sub{display:none;}
  .hero-badge{left:0;bottom:12px;padding:8px 12px;}
  .hero-badge strong{font-size:17px;}
  .pager a,.pager span{min-width:36px;height:36px;padding:0 10px;font-size:13px;}
}

/* roulang page: category2 */
:root{
  --brand:#2F6BFF;
  --brand-dark:#1D4FD8;
  --brand-light:#EAF1FF;
  --accent:#FF7A45;
  --accent-light:#FFF1E9;
  --ink:#0E1726;
  --text:#48566B;
  --muted:#7C889B;
  --line:#E3E9F2;
  --line-soft:#E9EEF7;
  --bg:#F7F9FD;
  --card:#FFFFFF;
  --success:#16A34A;
  --danger:#E5484D;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:26px;
  --sh1:0 1px 2px rgba(16,32,64,.05),0 10px 26px -14px rgba(16,32,64,.18);
  --sh2:0 18px 40px -18px rgba(47,107,255,.35);
  --ease:160ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:15.5px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer}
input,select{font-family:inherit}
::selection{background:rgba(47,107,255,.18)}
:focus-visible{outline:3px solid rgba(47,107,255,.35);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(16,32,64,.35)}
.header-inner{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(150deg,#2F6BFF,#1D4FD8);
  display:grid;place-items:center;
  box-shadow:0 6px 14px -8px rgba(47,107,255,.9);
}
.brand-mark svg{width:19px;height:19px;fill:#fff}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--ink);line-height:1.2}
.brand-sub{font-size:11px;font-weight:500;color:var(--muted);margin-left:4px;letter-spacing:0}
.main-nav ul{display:flex;gap:26px;margin:0;padding:0}
.main-nav li{display:flex;height:64px}
.main-nav a{
  position:relative;display:flex;align-items:center;
  font-size:15px;font-weight:500;color:var(--text);
}
.main-nav a:hover{color:var(--brand)}
.main-nav a.is-active{color:var(--ink);font-weight:600}
.main-nav a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.command-search{
  position:relative;display:flex;align-items:center;
  width:300px;height:40px;padding:0 10px 0 34px;
  background:#F7F9FD;border:1px solid var(--line);border-radius:10px;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.command-search > svg{
  position:absolute;left:11px;top:50%;transform:translateY(-50%);
  width:16px;height:16px;fill:none;stroke:var(--muted);stroke-width:1.8;
}
.command-search input{
  flex:1;min-width:0;height:100%;border:0;background:transparent;outline:none;
  font-size:13.5px;color:var(--ink);
}
.command-search input::placeholder{color:#96A1B3}
.command-search kbd{
  flex:none;font-family:inherit;font-size:11px;color:var(--muted);
  background:#fff;border:1px solid var(--line);border-radius:6px;padding:2px 6px;
}
.command-search:focus-within{
  background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(47,107,255,.15);
}
.header-divider{width:1px;height:22px;background:var(--line);flex:none}
.header-link{font-size:14px;color:var(--text);white-space:nowrap}
.header-link:hover{color:var(--brand)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -14px rgba(47,107,255,.9)}
.btn-primary:hover{background:#3A73FF;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{height:36px;padding:0 16px;font-size:13.5px;border-radius:10px}
.ghost-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand-dark);
}
.ghost-link svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;transition:transform var(--ease)}
.ghost-link:hover svg{transform:translateX(3px)}
.icon-btn{
  display:none;width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;
  transition:border-color var(--ease),background var(--ease);
}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:var(--ink);stroke-width:1.9;stroke-linecap:round}
.icon-btn:hover{border-color:var(--brand);background:var(--brand-light)}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,23,38,.42);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:95;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:88vw;
  background:#fff;z-index:100;padding:20px;
  transform:translateX(100%);transition:transform .28s cubic-bezier(.22,.61,.36,1);
  display:flex;flex-direction:column;gap:18px;overflow-y:auto;
  box-shadow:-18px 0 40px -24px rgba(16,32,64,.5);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-title{font-size:15px;font-weight:700}
.drawer-close{
  width:34px;height:34px;border-radius:9px;border:1px solid var(--line);background:#fff;
  font-size:20px;line-height:1;color:var(--text);display:grid;place-items:center;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-search{width:100%}
.drawer-nav{display:flex;flex-direction:column;gap:4px;border-top:1px solid var(--line-soft);padding-top:14px}
.drawer-nav a{
  padding:12px 12px;border-radius:10px;font-size:15px;color:var(--text);font-weight:500;
}
.drawer-nav a:hover{background:var(--brand-light);color:var(--brand-dark)}
.drawer-nav a.is-active{background:var(--brand-light);color:var(--brand-dark);font-weight:600}
.drawer-cta{width:100%}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  padding:44px 0 40px;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.92) 46%,rgba(247,249,253,.68) 100%);
}
.cat-hero .container{position:relative;z-index:1}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C3CDDD}
.hero-row{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cat-hero h1{
  font-size:clamp(26px,3.6vw,40px);font-weight:700;line-height:1.22;letter-spacing:-.01em;
  max-width:720px;
}
.cat-hero .hero-desc{
  margin-top:14px;max-width:640px;font-size:17px;line-height:1.72;color:var(--text);
}
.hero-stats{display:flex;flex-wrap:wrap;gap:18px;margin-top:16px;font-size:13px;color:var(--muted)}
.hero-stats span{display:inline-flex;align-items:center;gap:6px}
.hero-stats i{width:5px;height:5px;border-radius:50%;background:var(--brand);display:inline-block}
.sort-wrap{position:relative;flex:none}
.sort-wrap svg{
  position:absolute;right:14px;top:50%;transform:translateY(-50%);
  width:14px;height:14px;fill:none;stroke:var(--muted);stroke-width:2;pointer-events:none;
}
.sort-select{
  height:44px;padding:0 40px 0 16px;border-radius:var(--r-md);
  border:1px solid var(--line);background:#fff;color:var(--text);
  font-size:14px;appearance:none;-webkit-appearance:none;min-width:186px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.sort-select:hover{border-color:#C9D6EE}
.sort-select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,107,255,.15)}

/* ---------- Category layout ---------- */
.cat-layout{
  display:grid;grid-template-columns:260px minmax(0,1fr);gap:32px;
  padding:40px 0 0;
}
.side{display:flex;flex-direction:column;gap:16px;position:sticky;top:88px;align-self:start}
.side-card{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-lg);
  box-shadow:var(--sh1);padding:16px;
}
.side-title{
  font-size:12.5px;font-weight:600;color:var(--muted);letter-spacing:.04em;
  padding:2px 8px 10px;
}
.side-nav{display:flex;flex-direction:column;gap:2px}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:9px 12px;border-radius:10px;font-size:14px;color:var(--text);
  transition:background var(--ease),color var(--ease);
}
.side-nav a .n{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.side-nav a:hover{background:#F4F8FF;color:var(--brand-dark)}
.side-nav a.is-active{background:var(--brand-light);color:var(--brand-dark);font-weight:600}
.side-nav a.is-active .n{color:var(--brand)}
.side-cta{
  background:linear-gradient(160deg,#EAF1FF,#FFFFFF 78%);
  border:1px solid #D9E4FF;border-radius:var(--r-lg);padding:20px;
}
.side-cta h3{font-size:15px;font-weight:700;margin-bottom:8px}
.side-cta p{font-size:13px;line-height:1.7;color:var(--text);margin-bottom:14px}
.side-cta .btn{width:100%;height:40px;font-size:13.5px;border-radius:10px}

/* ---------- Row list ---------- */
.list-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:14px}
.list-head h2{font-size:22px;font-weight:700;letter-spacing:-.01em}
.list-head span{font-size:13px;color:var(--muted)}
.row-list{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-lg);
  box-shadow:var(--sh1);overflow:hidden;
}
.row-item{
  display:grid;grid-template-columns:200px minmax(0,1fr);gap:20px;
  padding:20px;border-bottom:1px solid var(--line-soft);
  transition:background var(--ease);
}
.row-item:last-child{border-bottom:0}
.row-item:hover{background:#F8FAFF}
.row-thumb{
  aspect-ratio:5/3;border-radius:var(--r-md);overflow:hidden;background:var(--brand-light);
}
.row-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.row-item:hover .row-thumb img{transform:scale(1.03)}
.row-body{display:flex;flex-direction:column;justify-content:center;gap:8px;min-width:0}
.row-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--brand-light);color:var(--brand-dark);
}
.chip-accent{background:var(--accent-light);color:#B5481D}
.row-title{font-size:17px;font-weight:600;line-height:1.45;color:var(--ink)}
.row-desc{
  font-size:14px;line-height:1.72;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.row-meta{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:12.5px;color:var(--muted)}
.row-meta b{font-weight:500;color:#64718A}
.list-foot{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:16px;font-size:13px;color:var(--muted);
}
.list-foot .pager{display:flex;align-items:center;gap:6px}
.pager span{
  min-width:32px;height:32px;padding:0 10px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;border:1px solid var(--line);background:#fff;font-size:13px;color:var(--text);
}
.pager span.is-current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
.pager span.is-disabled{color:#B4BECD}

/* ---------- Section base ---------- */
.section{padding:72px 0 0}
.section-head{max-width:720px;margin-bottom:28px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.section-head p{margin-top:10px;font-size:15px;color:var(--text)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:12px;
  font-size:12.5px;font-weight:600;color:var(--brand-dark);letter-spacing:.04em;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--brand)}

/* ---------- Stats ---------- */
.stats-band{
  margin-top:40px;background:var(--brand-light);border-radius:var(--r-lg);
  padding:26px 12px;display:grid;grid-template-columns:repeat(4,1fr);
}
.stat{padding:4px 20px;text-align:center;border-right:1px solid #D5E2FF}
.stat:last-child{border-right:0}
.stat strong{
  display:block;font-size:clamp(24px,2.8vw,32px);font-weight:700;line-height:1.2;
  color:var(--brand-dark);font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat span{display:block;margin-top:6px;font-size:12.5px;color:var(--text)}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{
  position:relative;background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-lg);
  padding:22px 20px;box-shadow:var(--sh1);transition:transform var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh2)}
.step-num{
  font-size:26px;font-weight:700;color:#C6D7FF;font-variant-numeric:tabular-nums;
  line-height:1;letter-spacing:-.02em;margin-bottom:12px;
}
.step h3{font-size:16px;font-weight:600;margin-bottom:6px}
.step p{font-size:13.5px;line-height:1.7;color:var(--text)}

/* ---------- Scenarios ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.scene-card{
  display:grid;grid-template-columns:132px minmax(0,1fr);gap:18px;align-items:center;
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-lg);
  padding:18px;box-shadow:var(--sh1);
  transition:transform var(--ease),box-shadow var(--ease);
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh2)}
.scene-card figure{
  aspect-ratio:1/1;border-radius:var(--r-md);overflow:hidden;background:var(--brand-light);
}
.scene-card img{width:100%;height:100%;object-fit:cover}
.scene-card h3{font-size:16.5px;font-weight:600;margin-bottom:6px}
.scene-card p{font-size:13.5px;line-height:1.72;color:var(--text)}

/* ---------- FAQ ---------- */
.faq-list{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-lg);
  box-shadow:var(--sh1);overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line-soft)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;min-height:56px;background:#fff;border:0;text-align:left;
  font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:background var(--ease),color var(--ease);
}
.faq-q:hover{background:#F8FAFF;color:var(--brand-dark)}
.faq-icon{position:relative;width:18px;height:18px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--muted);border-radius:2px;
  transition:transform .25s ease,background .25s ease;
}
.faq-icon::before{left:8px;top:0;width:2px;height:18px}
.faq-icon::after{top:8px;left:0;width:18px;height:2px}
.faq-item.is-open .faq-icon::before{transform:rotate(90deg);background:var(--brand)}
.faq-item.is-open .faq-icon::after{background:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;font-size:14.5px;line-height:1.8;color:var(--text);max-width:820px}
.faq-item.is-open .faq-a{max-height:400px}

/* ---------- CTA ---------- */
.cta-section{padding:72px 0 88px}
.cta-card{
  position:relative;overflow:hidden;text-align:center;
  background:linear-gradient(180deg,#EDF3FF,#E4EDFF 100%);
  border:1px solid #D9E4FF;border-radius:var(--r-xl);
  padding:56px 28px;
}
.cta-card::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(47,107,255,.16) 1px,transparent 1px);
  background-size:18px 18px;opacity:.5;
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 70%,transparent);
  mask-image:linear-gradient(180deg,transparent,#000 70%,transparent);
}
.cta-card > *{position:relative;z-index:1}
.cta-card h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;letter-spacing:-.01em}
.cta-card p{margin:12px auto 0;max-width:600px;font-size:15px;color:var(--text)}
.cta-actions{display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap;margin-top:26px}

/* ---------- Footer ---------- */
.site-footer{
  background:#fff;border-top:1px solid var(--line);
  padding:52px 0 24px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand p{margin-top:14px;font-size:13.5px;line-height:1.75;color:var(--text);max-width:320px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:var(--text);line-height:1.6}
.footer-col a{font-size:14px;color:var(--text)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:40px;padding-top:18px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.footer-bottom p{font-size:12px;color:#96A1B3}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .command-search{width:230px}
  .main-nav ul{gap:20px}
}
@media (max-width:1023px){
  .main-nav,.command-search,.header-divider,.header-link{display:none}
  .icon-btn{display:inline-flex}
  .cat-layout{grid-template-columns:minmax(0,1fr);gap:24px}
  .side{position:static;order:-1;flex-direction:row;align-items:stretch;flex-wrap:wrap}
  .side-card{flex:1 1 320px}
  .side-cta{flex:1 1 260px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:20px 0}
  .stat:nth-child(2){border-right:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .section{padding:56px 0 0}
  .cta-section{padding:56px 0 64px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .cat-hero{padding:32px 0 30px}
  .cat-hero .hero-desc{font-size:15px}
  .hero-row{align-items:flex-start}
  .sort-select{min-width:0;width:100%}
  .sort-wrap{width:100%}
  .row-item{grid-template-columns:minmax(0,1fr);gap:14px;padding:16px}
  .row-thumb{aspect-ratio:16/9}
  .row-desc{-webkit-line-clamp:3}
  .scene-grid{grid-template-columns:minmax(0,1fr)}
  .scene-card{grid-template-columns:104px minmax(0,1fr)}
  .steps{grid-template-columns:minmax(0,1fr)}
  .step:hover,.scene-card:hover{transform:none}
  .row-item:hover .row-thumb img{transform:none}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
  .cta-card{padding:40px 20px;border-radius:20px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .section{padding:48px 0 0}
}
@media (max-width:520px){
  .header-right .btn-sm{display:none}
  .brand-sub{display:none}
  .stats-band{padding:20px 6px}
  .stat{padding:4px 12px}
  .list-head{flex-direction:column;align-items:flex-start;gap:4px}
  .cta-actions .btn{width:100%}
}