/* roulang page: index */
:root{
  --c-brand:#12B886;
  --c-brand-dark:#0B8F66;
  --c-brand-soft:#E7F7F1;
  --c-accent:#FF6B35;
  --c-violet:#6C4BF4;
  --c-ink:#0F1714;
  --c-bg:#F5F8F6;
  --c-surface:#FFFFFF;
  --c-border:#E3EAE6;
  --t-1:#17201C;
  --t-2:#5B6B64;
  --t-3:#8E9C96;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,23,20,.06);
  --sh-2:0 14px 34px rgba(15,23,20,.09);
  --gap-sec:88px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
}
*,
*::before,
*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--t-1);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;color:inherit;border:0;background:none;cursor:pointer;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(18,184,134,.22);}

/* ============ 布局容器 ============ */
.row{max-width:1224px;margin-left:auto;margin-right:auto;}
.row::before,.row::after{content:" ";display:table;}
.row::after{clear:both;}
.column,.columns{padding-left:12px;padding-right:12px;}
.section{padding:var(--gap-sec) 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{
  font-size:30px;
  line-height:1.32;
  font-weight:700;
  letter-spacing:-.3px;
  color:var(--t-1);
  margin:14px 0 12px;
}
.section-head p{color:var(--t-2);font-size:16px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:1px;
  color:var(--c-brand-dark);
  background:var(--c-brand-soft);
  padding:7px 14px;
  border-radius:var(--r-pill);
}
.eyebrow-violet{background:#EFEBFE;color:#5334D6;}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--c-ink);
  color:rgba(255,255,255,.82);
  font-size:12.5px;
  line-height:1;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:40px;
  gap:16px;
}
.topbar-left{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-left .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--c-brand);
  box-shadow:0 0 0 3px rgba(18,184,134,.18);
  flex:none;
}
.topbar-right{display:flex;align-items:center;gap:18px;flex:none;}
.topbar-right a{color:rgba(255,255,255,.8);font-size:12.5px;}
.topbar-right a:hover{color:var(--c-accent);}
.topbar-domain{color:rgba(255,255,255,.42);letter-spacing:.4px;}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
  backdrop-filter:saturate(180%) blur(8px);
}
.site-header.is-stuck{
  box-shadow:var(--sh-1);
  border-bottom-color:var(--c-border);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:76px;
}
.brand{display:flex;align-items:center;gap:11px;flex:none;}
.brand-mark{
  width:40px;height:40px;
  border-radius:12px;
  background:linear-gradient(140deg,var(--c-brand),var(--c-brand-dark));
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;
  box-shadow:0 8px 18px rgba(18,184,134,.28);
}
.brand-text{display:flex;align-items:baseline;gap:5px;line-height:1;}
.brand-text strong{font-size:18px;font-weight:800;letter-spacing:.5px;color:var(--t-1);}
.brand-dot{color:var(--c-brand);font-weight:700;}
.brand-text em{
  font-style:normal;
  font-size:12.5px;
  font-weight:600;
  color:var(--t-2);
  letter-spacing:.4px;
}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15px;
  font-weight:600;
  color:var(--t-2);
  border-radius:8px;
}
.main-nav a:hover{color:var(--c-brand-dark);background:var(--c-brand-soft);}
.main-nav a.active{color:var(--c-brand-dark);}
.main-nav a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--c-brand);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:10px;
  border:1px solid var(--c-border);
  background:#fff;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t-1);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  border:1.5px solid transparent;
  white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
}
.btn-primary{background:var(--c-brand);color:#fff;box-shadow:0 8px 18px rgba(18,184,134,.22);}
.btn-primary:hover{background:var(--c-brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 10px 22px rgba(255,107,53,.26);}
.btn-accent:hover{background:#EB5A26;color:#fff;transform:translateY(-1px);box-shadow:0 16px 30px rgba(255,107,53,.3);}
.btn-accent:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.34);color:#fff;}
.btn-ghost:hover{border-color:var(--c-brand);background:rgba(18,184,134,.16);color:#fff;transform:translateY(-1px);}
.btn-outline{background:#fff;border-color:var(--c-border);color:var(--t-1);}
.btn-outline:hover{border-color:var(--c-brand);color:var(--c-brand-dark);box-shadow:var(--sh-1);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px;}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.btn i{font-size:.94em;}

/* ============ Hero ============ */
.hero{
  position:relative;
  background:var(--c-ink);
  color:#fff;
  padding:78px 0 86px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(18,184,134,.22) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.5;
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  top:-140px;left:-160px;
  width:460px;height:460px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(108,75,244,.28),transparent 68%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;}
.hero-copy{padding-top:8px;padding-bottom:8px;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.6px;
  color:#B8F0DC;
  background:rgba(18,184,134,.16);
  border:1px solid rgba(18,184,134,.34);
  padding:8px 15px;
  border-radius:var(--r-pill);
}
.hero h1{
  font-size:40px;
  line-height:1.26;
  font-weight:800;
  letter-spacing:-.6px;
  color:#fff;
  margin:22px 0 16px;
}
.hero-sub{
  font-size:16.5px;
  line-height:1.72;
  color:rgba(255,255,255,.74);
  max-width:520px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 26px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.hero-badges li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.82);
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.1);
  padding:8px 14px;
  border-radius:var(--r-pill);
}
.hero-badges i{color:var(--c-brand);font-size:12px;}

.hero-visual{padding-top:14px;}
.visual-stage{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  min-height:392px;
  padding:34px 30px 0;
  background:#101B17;
  box-shadow:var(--sh-2);
}
.visual-bg{
  position:absolute;
  inset:0;
  width:100%;height:100%;
  object-fit:cover;
  opacity:.9;
}
.visual-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(18,184,134,.5),rgba(15,23,20,.82));
}
.visual-card{
  position:relative;
  z-index:2;
  background:#fff;
  border-radius:var(--r-md);
  overflow:hidden;
  color:var(--t-1);
  box-shadow:0 20px 40px rgba(12,26,20,.24);
}
.visual-card-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:12px 16px;
  border-bottom:1px solid var(--c-border);
  font-size:13px;
  font-weight:600;
  color:var(--t-2);
}
.window-dots{display:flex;gap:6px;}
.window-dots i{display:block;width:9px;height:9px;border-radius:50%;background:#E3EAE6;}
.window-dots i:first-child{background:var(--c-accent);}
.window-dots i:nth-child(2){background:#F5C451;}
.window-dots i:nth-child(3){background:var(--c-brand);}
.visual-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EEF3F1;}
.visual-card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:14px 16px;
}
.visual-card-foot strong{display:block;font-size:15px;font-weight:700;line-height:1.4;}
.visual-card-foot span{display:block;font-size:12.5px;color:var(--t-3);}
.pill{
  font-size:12px;
  font-weight:700;
  color:var(--c-brand-dark);
  background:var(--c-brand-soft);
  padding:5px 12px;
  border-radius:var(--r-pill);
  white-space:nowrap;
}
.visual-float{
  position:absolute;
  z-index:3;
  right:26px;
  bottom:24px;
  background:#fff;
  border-radius:var(--r-md);
  padding:12px 18px;
  box-shadow:0 16px 30px rgba(12,26,20,.22);
  color:var(--t-1);
}
.visual-float strong{
  display:block;
  font-size:22px;
  font-weight:800;
  line-height:1.2;
  color:var(--c-brand-dark);
  font-variant-numeric:tabular-nums;
}
.visual-float span{font-size:12px;color:var(--t-3);}

/* ============ 卖点区 ============ */
.points-grid{margin-top:4px;}
.point-card{
  position:relative;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  height:100%;
  transition:border-color .28s ease,box-shadow .28s ease,transform .28s ease;
}
.point-card:hover{border-color:rgba(18,184,134,.35);box-shadow:var(--sh-2);transform:translateY(-2px);}
.point-card-lg{display:flex;flex-direction:column;}
.point-card-lg figure{overflow:hidden;background:#EEF3F1;}
.point-card-lg figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.point-card-lg:hover figure img{transform:scale(1.04);}
.point-body{padding:26px 28px 28px;}
.point-body .num{
  display:inline-block;
  font-size:13px;
  font-weight:800;
  letter-spacing:1px;
  color:var(--c-violet);
  margin-bottom:10px;
  font-variant-numeric:tabular-nums;
}
.point-body h3{font-size:20px;font-weight:700;line-height:1.45;margin-bottom:10px;}
.point-body p{color:var(--t-2);font-size:15px;}
.points-side{display:flex;flex-direction:column;gap:24px;}
.points-side .point-card{padding:26px 24px;}
.points-side h3{font-size:18px;font-weight:600;line-height:1.45;margin:12px 0 8px;}
.points-side p{font-size:14.5px;color:var(--t-2);}
.icon-badge{
  width:42px;height:42px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;
  background:var(--c-brand-soft);
  color:var(--c-brand-dark);
}
.icon-badge.violet{background:#EFEBFE;color:#5334D6;}
.icon-badge.accent{background:#FFF0EA;color:#D9501F;}
.tick-list{margin-top:18px;display:grid;gap:11px;}
.tick-list li{
  position:relative;
  padding-left:26px;
  font-size:14.5px;
  color:var(--t-2);
  line-height:1.7;
}
.tick-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  left:0;top:3px;
  font-size:11px;
  color:var(--c-brand);
}

/* ============ 场景演示 ============ */
.scene{padding:var(--gap-sec) 0;}
.scene-row{display:flex;align-items:center;gap:52px;}
.scene-row + .scene-row{margin-top:76px;}
.scene-row.reverse{flex-direction:row-reverse;}
.scene-copy{flex:1 1 46%;}
.scene-copy h3{font-size:24px;font-weight:700;line-height:1.42;margin:14px 0 14px;letter-spacing:-.2px;}
.scene-copy p{color:var(--t-2);font-size:15.5px;}
.scene-copy .btn{margin-top:24px;}
.scene-list{margin-top:20px;display:grid;gap:12px;}
.scene-list li{
  display:flex;
  gap:10px;
  font-size:14.5px;
  color:var(--t-2);
  line-height:1.7;
}
.scene-list i{color:var(--c-brand);font-size:12px;margin-top:6px;}
.scene-media{flex:1 1 54%;}
.device{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.device-bar{
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 16px;
  border-bottom:1px solid var(--c-border);
  background:#FAFCFB;
}
.device-bar span{font-size:12.5px;color:var(--t-3);}
.device img{width:100%;aspect-ratio:16/9;object-fit:cover;background:#EEF3F1;}

/* ============ 统计条 ============ */
.stats-bar{background:var(--c-ink);color:#fff;padding:52px 0;}
.stats-bar .column{text-align:center;padding-top:14px;padding-bottom:14px;}
.stats-bar strong{
  display:block;
  font-size:44px;
  font-weight:700;
  line-height:1.1;
  letter-spacing:-1px;
  font-variant-numeric:tabular-nums;
  color:#fff;
}
.stats-bar strong em{font-style:normal;font-size:20px;font-weight:700;color:var(--c-brand);margin-left:2px;}
.stats-bar span{display:block;font-size:13.5px;color:rgba(255,255,255,.62);margin-top:8px;}
.stats-divider{border-right:1px solid rgba(255,255,255,.09);}

/* ============ 评价卡 ============ */
.quote-grid{margin-top:44px;}
.quote-card{
  height:100%;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  padding:28px 26px;
  box-shadow:var(--sh-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.quote-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(18,184,134,.3);}
.quote-mark{
  font-family:Georgia,serif;
  font-size:44px;
  line-height:1;
  color:var(--c-brand);
  opacity:.34;
  display:block;
  margin-bottom:8px;
}
.quote-card p{font-size:15px;color:var(--t-2);}
.quote-foot{display:flex;align-items:center;gap:12px;margin-top:22px;}
.quote-avatar{
  width:40px;height:40px;
  border-radius:50%;
  background:var(--c-brand-soft);
  color:var(--c-brand-dark);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
  flex:none;
}
.quote-foot strong{display:block;font-size:14px;font-weight:700;}
.quote-foot span{display:block;font-size:12.5px;color:var(--t-3);}

/* ============ 资讯列表 ============ */
.news-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:40px;
}
.news-head .section-head{margin-bottom:0;}
.more-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  font-weight:600;
  color:var(--c-brand-dark);
  padding-bottom:4px;
  border-bottom:1px solid transparent;
  flex:none;
}
.more-link:hover{color:var(--c-brand);border-bottom-color:var(--c-brand);}
.news-grid{display:flex;flex-wrap:wrap;}
.news-grid > .column{display:flex;margin-bottom:28px;}
.news-card{
  display:flex;
  flex-direction:column;
  width:100%;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:border-color .28s ease,box-shadow .28s ease,transform .28s ease;
}
.news-card:hover{border-color:rgba(18,184,134,.35);box-shadow:var(--sh-2);transform:translateY(-2px);}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:#EEF3F1;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;font-size:12.5px;color:var(--t-3);}
.news-body h3{font-size:18px;font-weight:600;line-height:1.45;margin-bottom:10px;color:var(--t-1);}
.news-card:hover h3{color:var(--c-brand-dark);}
.news-body p{font-size:14px;color:var(--t-2);flex:1;}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:18px;
  padding-top:14px;
  border-top:1px solid var(--c-border);
  font-size:12.5px;
  color:var(--t-3);
}
.news-foot i{color:var(--c-brand);margin-right:5px;}
.empty-state{
  width:100%;
  text-align:center;
  background:var(--c-surface);
  border:1px dashed var(--c-border);
  border-radius:var(--r-md);
  padding:56px 24px;
}
.empty-state .icon-badge{margin:0 auto 16px;width:52px;height:52px;font-size:20px;}
.empty-state h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.empty-state p{font-size:14px;color:var(--t-3);margin-bottom:20px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{border-top:1px solid var(--c-border);}
.faq-item:last-child{border-bottom:1px solid var(--c-border);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  text-align:left;
  padding:22px 0;
  font-size:16px;
  font-weight:600;
  color:var(--t-1);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--c-brand-dark);}
.faq-q .plus{
  position:relative;
  width:22px;height:22px;
  flex:none;
  border-radius:50%;
  background:var(--c-brand-soft);
  transition:transform .28s ease,background-color .28s ease;
}
.faq-q .plus::before,
.faq-q .plus::after{
  content:"";
  position:absolute;
  top:50%;left:50%;
  width:10px;height:2px;
  border-radius:2px;
  background:var(--c-brand-dark);
  transform:translate(-50%,-50%);
}
.faq-q .plus::after{transform:translate(-50%,-50%) rotate(90deg);}
.faq-item.open .faq-q{color:var(--c-brand-dark);}
.faq-item.open .plus{transform:rotate(135deg);background:var(--c-brand);}
.faq-item.open .plus::before,.faq-item.open .plus::after{background:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s ease;}
.faq-a p{
  padding:0 0 22px;
  font-size:14.8px;
  color:var(--t-2);
  max-width:680px;
}

/* ============ 底部 CTA ============ */
.cta-block{
  background:var(--c-brand-soft);
  border-radius:24px;
  padding:48px 52px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
  position:relative;
  overflow:hidden;
}
.cta-block::after{
  content:"";
  position:absolute;
  right:-60px;bottom:-70px;
  width:240px;height:240px;
  border-radius:50%;
  background:rgba(18,184,134,.14);
}
.cta-block h2{font-size:26px;font-weight:700;line-height:1.4;margin-bottom:10px;position:relative;z-index:2;}
.cta-block p{font-size:15px;color:var(--t-2);position:relative;z-index:2;max-width:560px;}
.cta-block .btn{position:relative;z-index:2;flex:none;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.75);padding:70px 0 0;margin-top:var(--gap-sec);}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand strong{color:#fff;font-size:17px;font-weight:800;}
.footer-brand em{font-style:normal;font-size:12.5px;color:rgba(255,255,255,.6);}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:320px;}
.footer-list{display:grid;gap:11px;}
.footer-list a{font-size:13.5px;color:rgba(255,255,255,.72);}
.footer-list a:hover{color:#fff;}
.footer-contact{display:grid;gap:12px;font-size:13.5px;color:rgba(255,255,255,.7);}
.footer-contact i{color:var(--c-brand);width:16px;margin-right:8px;}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:rgba(255,255,255,.5);
}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom-links a{color:rgba(255,255,255,.55);}
.footer-bottom-links a:hover{color:#fff;}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:12.5px;
  color:rgba(255,255,255,.72);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-pill);
  padding:7px 16px;
  transition:all .22s ease;
}
.to-top:hover{color:#fff;border-color:var(--c-brand);background:rgba(18,184,134,.16);}

/* ============ 底部固定转化条 ============ */
.dock{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:90;
  transition:opacity .3s ease,transform .3s ease;
}
.dock-inner{
  display:flex;
  align-items:center;
  gap:18px;
  background:var(--c-ink);
  border-radius:var(--r-pill);
  padding:10px 10px 10px 22px;
  box-shadow:0 18px 36px rgba(15,23,20,.28);
}
.dock-text{font-size:14px;color:rgba(255,255,255,.82);white-space:nowrap;}
.dock.is-hidden{opacity:0;transform:translateY(14px);pointer-events:none;}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  :root{--gap-sec:64px;}
  .main-nav{
    position:absolute;
    top:100%;left:0;right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    background:#fff;
    border-bottom:1px solid var(--c-border);
    box-shadow:var(--sh-2);
    padding:12px 16px 18px;
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{padding:13px 12px;font-size:15px;border-radius:10px;}
  .main-nav a.active::after{display:none;}
  .main-nav a.active{background:var(--c-brand-soft);}
  .nav-toggle{display:flex;}
  .header-actions .btn-sm{display:none;}
  .hero{padding:60px 0 66px;}
  .hero h1{font-size:33px;}
  .hero-visual{margin-top:40px;}
  .scene-row{flex-direction:column;gap:32px;}
  .scene-row.reverse{flex-direction:column;}
  .scene-row + .scene-row{margin-top:64px;}
  .scene-copy,.scene-media{flex:1 1 100%;width:100%;}
  .cta-block{padding:38px 32px;}
  .stats-bar strong{font-size:36px;}
}
@media screen and (max-width:768px){
  .topbar-domain{display:none;}
  .topbar-right{gap:14px;}
  .section-head h2{font-size:25px;}
  .point-body{padding:22px;}
  .news-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .cta-block{flex-direction:column;align-items:flex-start;padding:32px 24px;}
  .stats-bar{padding:38px 0;}
  .stats-bar .column{padding-top:16px;padding-bottom:16px;}
  .stats-divider{border-right:0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .dock{right:0;left:0;bottom:0;}
  .dock-inner{
    border-radius:0;
    padding:10px 16px;
    justify-content:space-between;
    gap:12px;
    box-shadow:0 -8px 24px rgba(15,23,20,.18);
  }
  .dock-text{font-size:13px;overflow:hidden;text-overflow:ellipsis;}
  body{padding-bottom:68px;}
}
@media screen and (max-width:520px){
  .hero h1{font-size:27px;letter-spacing:-.3px;}
  .hero-sub{font-size:15px;}
  .hero-cta .btn{flex:1 1 100%;}
  .section-head h2{font-size:23px;}
  .scene-copy h3{font-size:20px;}
  .visual-stage{padding:20px 16px 0;min-height:300px;}
  .visual-float{right:14px;bottom:14px;padding:10px 14px;}
  .visual-float strong{font-size:18px;}
  .quote-card{padding:22px 20px;}
  .cta-block h2{font-size:21px;}
  .cta-block .btn{width:100%;}
}
@media screen and (min-width:1280px){
  .hero h1{font-size:44px;}
}

/* roulang page: article */
:root{
  --c-brand:#12B886;
  --c-brand-dark:#0B8F66;
  --c-brand-soft:#E7F7F1;
  --c-accent:#FF6B35;
  --c-violet:#6C4BF4;
  --c-ink:#0F1714;
  --c-bg:#F5F8F6;
  --c-surface:#FFFFFF;
  --c-border:#E3EAE6;
  --t-1:#17201C;
  --t-2:#5B6B64;
  --t-3:#8E9C96;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,23,20,.06);
  --sh-2:0 14px 34px rgba(15,23,20,.09);
  --gap-sec:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t-1);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--c-brand-dark);text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease;}
a:hover{color:var(--c-brand);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:20px;}
button{font-family:inherit;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:4px;}
.row{max-width:1200px;}
.row::before,.row::after{clear:both;}
.header-inner,.topbar-inner{display:flex;align-items:center;justify-content:space-between;}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--c-ink);color:#fff;font-size:13px;}
.topbar-inner{min-height:40px;padding-top:5px;padding-bottom:5px;gap:16px;}
.topbar-tip{color:rgba(255,255,255,.82);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-tip i{color:var(--c-brand);margin-right:7px;}
.topbar-links{display:flex;align-items:center;gap:18px;flex-shrink:0;}
.topbar-links a{color:rgba(255,255,255,.78);font-size:13px;}
.topbar-links a:hover{color:var(--c-accent);}
.topbar-domain{color:rgba(255,255,255,.4);font-size:12px;padding-left:18px;border-left:1px solid rgba(255,255,255,.14);}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);border-bottom-color:var(--c-border);}
.header-inner{position:relative;min-height:72px;}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,var(--c-brand),var(--c-brand-dark));
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;box-shadow:0 6px 16px rgba(18,184,134,.28);flex-shrink:0;
}
.brand-text{display:flex;align-items:baseline;gap:6px;font-size:17px;color:var(--t-1);}
.brand-text strong{font-weight:800;letter-spacing:.5px;}
.brand-text em{font-style:normal;font-size:12.5px;color:var(--t-2);letter-spacing:.4px;}
.brand-dot{color:var(--c-brand);font-weight:800;}
.main-nav{display:flex;align-items:center;gap:2px;}
.main-nav a{
  position:relative;display:inline-block;padding:26px 14px;
  font-size:15px;color:var(--t-2);font-weight:500;
}
.main-nav a:hover{color:var(--c-brand-dark);}
.main-nav a.active{color:var(--c-brand-dark);font-weight:700;}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:15px;height:2px;
  background:var(--c-brand);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--c-border);
  background:#fff;flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer;
  transition:border-color .2s ease;
}
.nav-toggle:hover{border-color:var(--c-brand);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t-1);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ============ 按钮与徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;
  transition:transform .22s ease,background .22s ease,box-shadow .22s ease,color .22s ease,border-color .22s ease;
  text-decoration:none;line-height:1;white-space:nowrap;
}
.btn:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--c-brand);color:#fff;border-color:var(--c-brand);}
.btn-primary:hover{background:var(--c-brand-dark);border-color:var(--c-brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent);}
.btn-accent:hover{background:#EF5A24;border-color:#EF5A24;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline{background:transparent;color:var(--c-brand-dark);border-color:rgba(18,184,134,.45);}
.btn-outline:hover{background:var(--c-brand-soft);border-color:var(--c-brand);color:var(--c-brand-dark);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-block{width:100%;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;background:var(--c-brand-soft);color:var(--c-brand-dark);letter-spacing:.2px;
}
.badge-violet{background:#EFEBFE;color:var(--c-violet);}

/* ============ 文章头 ============ */
.article-hero{
  position:relative;
  background:var(--c-ink) url('/assets/images/backpic/back-2.png') center center/cover no-repeat;
  color:#fff;
  padding:48px 0 104px;
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(118deg,rgba(15,23,20,.95) 0%,rgba(11,143,102,.80) 52%,rgba(15,23,20,.90) 100%);
}
.article-hero .row{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb .sep{color:rgba(255,255,255,.32);}
.breadcrumb .current{color:rgba(255,255,255,.6);max-width:560px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:clamp(24px,3.2vw,34px);
  line-height:1.3;font-weight:800;letter-spacing:.2px;color:#fff;max-width:900px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  margin-top:18px;font-size:13px;color:rgba(255,255,255,.68);
}
.article-meta i{margin-right:6px;color:var(--c-brand);}
.article-meta .dot{color:rgba(255,255,255,.3);}
.article-meta em{font-style:normal;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}

/* ============ 正文区 ============ */
.article-section{padding:0 0 var(--gap-sec);}
.article-cover{
  position:relative;
  margin-top:-72px;
  margin-bottom:46px;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:#EEF3F1;
  aspect-ratio:16/9;
}
.article-cover img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-lg);}
.toc-col{display:block;}
.toc-card{
  position:sticky;top:96px;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-md);padding:22px 20px;box-shadow:var(--sh-1);
}
.toc-title{font-size:14px;font-weight:700;color:var(--t-1);margin-bottom:12px;letter-spacing:.6px;}
.toc-list{list-style:none;margin:0 0 18px;padding:0 0 0 12px;border-left:2px solid var(--c-border);}
.toc-list li a{
  display:block;padding:6px 8px;font-size:13.5px;line-height:1.55;color:var(--t-2);
  border-radius:6px;transition:all .2s ease;
}
.toc-list li a:hover{color:var(--c-brand-dark);background:var(--c-brand-soft);}
.toc-tip{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--c-border);
  font-size:12.5px;color:var(--t-3);line-height:1.7;
}

/* CMS 正文排版 */
.article-body{max-width:760px;font-size:16px;line-height:1.75;color:#29332E;word-break:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 18px;}
.article-body h2{
  position:relative;font-size:23px;line-height:1.4;font-weight:700;color:var(--t-1);
  margin:38px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:4px;background:var(--c-brand);
}
.article-body h3{font-size:19px;font-weight:600;color:var(--t-1);margin:28px 0 12px;line-height:1.5;}
.article-body h4{font-size:16.5px;font-weight:600;color:var(--t-1);margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;line-height:1.8;}
.article-body li{margin-bottom:8px;}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;background:var(--c-brand-soft);
  border-left:4px solid var(--c-brand);border-radius:0 var(--r-sm) var(--r-sm) 0;color:#22302A;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:20px 0;width:auto;max-width:100%;}
.article-body figure{margin:22px 0;}
.article-body figcaption{font-size:13px;color:var(--t-3);text-align:center;margin-top:8px;}
.article-body a{color:var(--c-brand-dark);text-decoration:underline;text-underline-offset:3px;}
.article-body strong{color:var(--t-1);font-weight:700;}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px;}
.article-body th,.article-body td{border:1px solid var(--c-border);padding:10px 12px;text-align:left;}
.article-body thead th{background:var(--c-brand-soft);color:var(--t-1);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#FAFCFB;}
.article-body hr{border:0;border-top:1px solid var(--c-border);margin:32px 0;}

/* 空态 */
.empty-state{
  background:var(--c-surface);border:1px dashed var(--c-border);border-radius:var(--r-md);
  padding:56px 24px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state .empty-icon{
  width:64px;height:64px;border-radius:18px;background:var(--c-brand-soft);color:var(--c-brand-dark);
  display:inline-flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:18px;
}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:10px;padding:0;}
.empty-state h2::before{display:none;}
.empty-state p{font-size:14.5px;color:var(--t-2);margin-bottom:22px;}

/* 标签与翻页 */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;align-items:center;}
.tag-row .tag-label{font-size:13px;color:var(--t-3);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--c-brand-soft);color:var(--c-brand-dark);font-size:13px;font-weight:500;
}
.tag:hover{background:#D4F0E5;color:var(--c-brand-dark);}
.post-nav{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  margin-top:32px;padding-top:26px;border-top:1px solid var(--c-border);
}
.post-nav a{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--t-2);
}
.post-nav a:hover{color:var(--c-brand-dark);}
.post-nav a i{font-size:12px;}

/* 相关推荐 */
.related{margin-top:64px;}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;}
.related-head h2{font-size:22px;font-weight:700;color:var(--t-1);line-height:1.35;}
.related-head span{font-size:13px;color:var(--t-3);}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.post-card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(18,184,134,.35);}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:#EEF3F1;}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.post-card h3{font-size:17px;font-weight:600;line-height:1.45;}
.post-card h3 a{color:var(--t-1);}
.post-card h3 a:hover{color:var(--c-brand-dark);}
.post-card p{font-size:14px;color:var(--t-2);line-height:1.65;}
.post-card .card-meta{margin-top:auto;font-size:12.5px;color:var(--t-3);}

/* ============ 底部固定转化条 ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:80;
  display:flex;align-items:center;gap:16px;
  background:var(--c-ink);color:#fff;padding:11px 12px 11px 22px;
  border-radius:var(--r-pill);box-shadow:0 18px 40px rgba(15,23,20,.28);
  transition:opacity .3s ease,transform .3s ease;
}
.float-cta.is-hidden{opacity:0;transform:translateY(18px);pointer-events:none;}
.float-cta-text{font-size:14px;color:rgba(255,255,255,.86);white-space:nowrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:#fff;padding:64px 0 0;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand span strong{display:block;font-size:16px;font-weight:800;color:#fff;line-height:1.2;}
.footer-brand span em{font-style:normal;font-size:12px;color:rgba(255,255,255,.55);letter-spacing:.5px;}
.footer-desc{font-size:13px;color:rgba(255,255,255,.62);line-height:1.8;}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.5px;}
.footer-list{list-style:none;margin:0;padding:0;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:13px;color:rgba(255,255,255,.75);}
.footer-list a:hover{color:#fff;text-decoration:underline;}
.footer-contact{display:flex;flex-direction:column;gap:10px;}
.footer-contact span{font-size:13px;color:rgba(255,255,255,.75);display:flex;align-items:center;gap:8px;}
.footer-contact i{color:var(--c-brand);font-size:13px;width:14px;}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:rgba(255,255,255,.5);
}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom-links a{font-size:12.5px;color:rgba(255,255,255,.6);}
.footer-bottom-links a:hover{color:#fff;}
.to-top{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;color:rgba(255,255,255,.7);}
.to-top:hover{color:var(--c-brand);}
.to-top i{font-size:11px;}

/* ============ 响应式 ============ */
@media screen and (max-width:1279px){
  .row{max-width:1120px;}
}
@media screen and (max-width:1023px){
  :root{--gap-sec:64px;}
  .nav-toggle{display:flex;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:6px 16px 14px;border-bottom:1px solid var(--c-border);box-shadow:var(--sh-2);
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{padding:14px 4px;border-bottom:1px solid var(--c-border);font-size:15px;}
  .main-nav a:last-child{border-bottom:0;}
  .main-nav a.active::after{display:none;}
  .toc-col{display:none;}
  .article-hero{padding:38px 0 88px;}
  .article-cover{margin-top:-58px;margin-bottom:38px;}
  .article-body{max-width:100%;}
  .card-grid{grid-template-columns:repeat(2,1fr);gap:18px;}
  .site-footer{padding-top:52px;}
  .float-cta{right:16px;bottom:16px;}
}
@media screen and (max-width:767px){
  :root{--gap-sec:48px;}
  body{padding-bottom:78px;}
  .topbar-inner{min-height:36px;}
  .topbar-tip{font-size:12px;}
  .topbar-links{gap:14px;}
  .topbar-domain{display:none;}
  .header-inner{min-height:64px;}
  .brand-text em{display:none;}
  .brand-text{font-size:16px;}
  .header-actions .btn{display:none;}
  .article-hero{padding:28px 0 76px;}
  .breadcrumb{flex-wrap:nowrap;overflow-x:auto;white-space:nowrap;padding-bottom:4px;}
  .breadcrumb .current{max-width:none;}
  .article-meta{gap:8px;font-size:12.5px;}
  .article-cover{margin-top:-46px;margin-bottom:30px;border-radius:var(--r-md);aspect-ratio:16/10;}
  .article-cover img{border-radius:var(--r-md);}
  .article-body{font-size:15.5px;}
  .article-body h2{font-size:20px;margin:30px 0 12px;}
  .article-body h3{font-size:17.5px;}
  .card-grid{grid-template-columns:1fr;}
  .related{margin-top:48px;}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;padding:10px 14px;
    justify-content:space-between;gap:10px;
  }
  .float-cta.is-hidden{transform:translateY(100%);}
  .float-cta-text{font-size:13px;white-space:normal;line-height:1.4;}
  .footer-bottom{justify-content:flex-start;}
}
@media screen and (max-width:520px){
  .row{padding-left:16px;padding-right:16px;}
  .article-title{font-size:23px;}
  .float-cta-text{max-width:60%;}
  .btn-sm{height:38px;padding:0 14px;font-size:13px;}
}

/* roulang page: category1 */
:root{
  --c-brand:#12B886;
  --c-brand-dark:#0B8F66;
  --c-brand-soft:#E7F7F1;
  --c-accent:#FF6B35;
  --c-accent-dark:#E8531D;
  --c-violet:#6C4BF4;
  --c-violet-soft:#EFEBFF;
  --c-ink:#0F1714;
  --c-bg:#F5F8F6;
  --c-surface:#FFFFFF;
  --c-border:#E3EAE6;
  --t-1:#17201C;
  --t-2:#5B6B64;
  --t-3:#8E9C96;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,23,20,.06);
  --sh-2:0 14px 34px rgba(15,23,20,.09);
  --gap-sec:88px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--t-1);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--c-brand-dark);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--c-brand);}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--t-1);line-height:1.3;letter-spacing:.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
figure{margin:0;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:6px;}
::selection{background:var(--c-brand-soft);color:var(--c-brand-dark);}

/* 容器与栅格 */
.row{max-width:1200px;padding-left:12px;padding-right:12px;}
.row .row{margin-left:-12px;margin-right:-12px;padding-left:0;padding-right:0;max-width:none;}
.column,.columns{padding-left:12px;padding-right:12px;}
.align-middle{align-items:center;}

/* 顶部信息条 */
.topbar{background:var(--c-ink);color:rgba(255,255,255,.86);font-size:13px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px;padding-top:6px;padding-bottom:6px;}
.topbar-note{margin:0;display:flex;align-items:center;gap:8px;color:#fff;font-weight:600;}
.topbar-note i{color:var(--c-brand);}
.topbar-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.topbar-links a{color:rgba(255,255,255,.78);font-size:13px;}
.topbar-links a:hover{color:var(--c-accent);}
.topbar-domain{color:rgba(255,255,255,.4);font-size:12px;letter-spacing:.4px;}

/* 主导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);border-bottom-color:var(--c-border);}
.header-inner{display:flex;align-items:center;gap:22px;min-height:72px;padding-top:8px;padding-bottom:8px;position:relative;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 38px;
  background:linear-gradient(140deg,var(--c-brand),var(--c-brand-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;
  box-shadow:0 6px 14px rgba(18,184,134,.28);
}
.brand-text{display:flex;align-items:baseline;gap:3px;color:var(--t-1);font-size:18px;font-weight:800;white-space:nowrap;}
.brand-text em{font-style:normal;font-size:12px;font-weight:600;color:var(--t-2);letter-spacing:.3px;}
.brand-dot{color:var(--c-brand);font-weight:800;}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.main-nav a{
  position:relative;display:block;padding:10px 12px;font-size:14.5px;font-weight:600;color:var(--t-2);white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:center;transition:transform .25s ease;
}
.main-nav a:hover{color:var(--t-1);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--c-brand-dark);}
.main-nav a.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-border);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t-1);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;letter-spacing:.3px;
  border:1.5px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn i{font-size:14px;}
.btn-primary{background:var(--c-brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(255,107,53,.24);}
.btn-accent:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px rgba(255,107,53,.3);}
.btn-accent:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.12);color:#fff;}
.btn-outline{background:transparent;border-color:var(--c-border);color:var(--t-1);}
.btn-outline:hover{border-color:var(--c-brand);color:var(--c-brand-dark);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:var(--r-sm);}
.btn-block{width:100%;}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;line-height:1.6;
  background:var(--c-brand-soft);color:var(--c-brand-dark);
}
.badge-violet{background:var(--c-violet-soft);color:var(--c-violet);}
.badge-plain{background:#F1F4F2;color:var(--t-2);}

/* Hero */
.hero-cat{position:relative;overflow:hidden;background:var(--c-ink);}
.hero-cat::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(118deg,rgba(15,23,20,.55) 0%,rgba(11,143,102,.40) 58%,rgba(15,23,20,.52) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;background-repeat:no-repeat;
}
.hero-cat::after{
  content:"";position:absolute;inset:0;opacity:.28;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:22px 22px;
  mask-image:linear-gradient(120deg,rgba(0,0,0,.9),transparent 72%);
  -webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.9),transparent 72%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding-top:96px;padding-bottom:88px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);
  color:#EAFBF4;font-size:13px;font-weight:700;letter-spacing:.4px;
}
.hero-eyebrow i{color:var(--c-brand);}
.hero-cat h1{
  margin-top:20px;color:#fff;font-size:42px;line-height:1.25;font-weight:800;
  max-width:820px;text-shadow:0 2px 18px rgba(15,23,20,.35);
}
.hero-lead{
  margin-top:18px;max-width:640px;color:rgba(255,255,255,.86);
  font-size:16.5px;line-height:1.8;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:22px;margin-top:34px;}
.hero-badges li{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.86);font-size:13.5px;font-weight:600;}
.hero-badges i{color:var(--c-brand);font-size:15px;}

/* 面包屑 */
.crumb{background:#fff;border-bottom:1px solid var(--c-border);}
.crumb-inner{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t-3);padding-top:12px;padding-bottom:12px;overflow-x:auto;white-space:nowrap;}
.crumb-inner a{color:var(--t-2);}
.crumb-inner a:hover{color:var(--c-brand-dark);}
.crumb-sep{color:#C7D2CC;}
.crumb-current{color:var(--t-2);font-weight:600;}

/* 锚点导航条 */
.anchor-bar{background:var(--c-bg);padding:26px 0 4px;}
.anchor-inner{
  display:flex;align-items:center;gap:10px;flex-wrap:nowrap;overflow-x:auto;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  box-shadow:var(--sh-1);padding:14px 18px;
}
.anchor-label{flex:0 0 auto;font-size:13px;font-weight:700;color:var(--t-3);letter-spacing:.5px;margin-right:4px;}
.anchor-inner a{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;
  padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--c-border);
  font-size:13.5px;font-weight:600;color:var(--t-2);background:#fff;
}
.anchor-inner a:hover{border-color:rgba(18,184,134,.45);color:var(--c-brand-dark);background:var(--c-brand-soft);}
.anchor-inner a b{color:var(--c-violet);font-weight:800;font-size:12px;letter-spacing:.5px;}

/* 通用板块 */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:42px;}
.section-head h2{font-size:30px;font-weight:800;}
.section-head .section-sub{margin-top:14px;color:var(--t-2);font-size:15.5px;line-height:1.8;}
.section-head-center{text-align:center;margin-left:auto;margin-right:auto;}
.eyebrow-line{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--c-brand-dark);letter-spacing:1px;}
.eyebrow-line::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--c-violet);}

/* 编号大卡列表 */
.step-list{display:flex;flex-direction:column;gap:26px;}
.step-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:34px 8px;transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.step-card:hover{border-color:rgba(18,184,134,.35);box-shadow:var(--sh-2);transform:translateY(-2px);}
.step-num{
  display:block;font-size:52px;line-height:1;font-weight:800;letter-spacing:-1px;
  color:var(--c-brand-soft);font-variant-numeric:tabular-nums;text-shadow:0 2px 0 #fff;
  -webkit-text-stroke:1px rgba(18,184,134,.35);
}
.step-body{padding-top:6px;}
.step-body h3{margin-top:14px;font-size:20px;line-height:1.45;font-weight:700;}
.step-body > p{margin-top:12px;color:var(--t-2);font-size:15.5px;line-height:1.8;}
.tick-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.tick-list li{position:relative;padding-left:24px;color:var(--t-2);font-size:14.5px;line-height:1.7;}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--c-brand-soft);border:2px solid var(--c-brand);
}
.step-media{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--c-border);background:#EEF3F1;}
.step-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .4s ease;}
.step-card:hover .step-media img{transform:scale(1.04);}

/* 设备差异 */
.section-device{background:linear-gradient(180deg,#fff 0%,var(--c-bg) 100%);border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border);}
.device-row{margin-top:8px;}
.media-card{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-border);box-shadow:var(--sh-2);background:#EEF3F1;}
.media-card img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.device-item{padding:22px 0 22px 24px;border-left:3px solid var(--c-brand-soft);}
.device-item + .device-item{margin-top:22px;border-top:1px solid var(--c-border);padding-top:26px;}
.device-item:hover{border-left-color:var(--c-brand);}
.device-tag{
  display:inline-flex;align-items:center;padding:3px 11px;border-radius:var(--r-pill);
  background:var(--c-violet-soft);color:var(--c-violet);font-size:12px;font-weight:700;
}
.device-item h3{margin-top:12px;font-size:19px;font-weight:700;line-height:1.45;}
.device-item p{margin-top:10px;color:var(--t-2);font-size:15px;line-height:1.8;}

/* 深色卡点区 */
.section-dark{background:var(--c-ink);color:#fff;}
.section-dark h2{color:#fff;font-size:30px;}
.section-dark .section-sub{color:rgba(255,255,255,.7);}
.section-dark p{color:rgba(255,255,255,.72);}
.issue-list{margin-top:6px;display:flex;flex-direction:column;}
.issue-list li{display:flex;gap:20px;padding:24px 0;border-top:1px solid rgba(255,255,255,.12);}
.issue-list li:last-child{border-bottom:1px solid rgba(255,255,255,.12);}
.issue-num{
  flex:0 0 46px;font-size:15px;font-weight:800;color:var(--c-brand);
  font-variant-numeric:tabular-nums;letter-spacing:1px;line-height:1.9;
}
.issue-list h3{color:#fff;font-size:17.5px;font-weight:700;}
.issue-list p{margin-top:8px;font-size:14.5px;line-height:1.8;}
.dark-note{
  margin-top:26px;padding:18px 20px;border-radius:var(--r-md);
  background:rgba(18,184,134,.12);border:1px solid rgba(18,184,134,.28);
  color:rgba(255,255,255,.82);font-size:14px;line-height:1.8;
}

/* FAQ */
.faq-list{border-top:1px solid var(--c-border);}
.faq-item{border-bottom:1px solid var(--c-border);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0;text-align:left;font-size:16px;font-weight:600;color:var(--t-1);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--c-brand-dark);}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-brand-soft);color:var(--c-brand-dark);font-size:12px;
  transition:transform .28s ease,background-color .28s ease,color .28s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(135deg);background:var(--c-brand);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-item.is-open .faq-a{max-height:320px;}
.faq-a p{padding:0 44px 22px 0;color:var(--t-2);font-size:15px;line-height:1.85;}

/* CTA 块 */
.cta-block{
  background:var(--c-brand-soft);border-radius:24px;padding:48px 46px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  border:1px solid rgba(18,184,134,.18);
}
.cta-block h2{font-size:27px;font-weight:800;}
.cta-block p{margin-top:12px;color:var(--t-2);font-size:15px;line-height:1.8;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}

/* 空态 */
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--c-border);border-radius:var(--r-lg);background:#fff;
}
.empty-state i{font-size:26px;color:var(--c-brand);}
.empty-state h3{margin-top:14px;font-size:18px;}
.empty-state p{margin-top:10px;color:var(--t-2);font-size:14.5px;}

/* 页脚 */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.75);padding-top:64px;margin-top:0;}
.site-footer .row{padding-top:0;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;}
.footer-brand strong{font-size:18px;font-weight:800;}
.footer-brand em{font-style:normal;display:block;font-size:12px;color:rgba(255,255,255,.6);font-weight:600;}
.footer-brand span:last-child{display:flex;flex-direction:column;line-height:1.4;}
.footer-desc{margin-top:18px;font-size:13px;line-height:1.85;color:rgba(255,255,255,.62);max-width:320px;}
.footer-title{color:#fff;font-size:14px;font-weight:700;margin-bottom:18px;letter-spacing:.4px;}
.footer-list li{margin-bottom:11px;}
.footer-list a{color:rgba(255,255,255,.72);font-size:13px;}
.footer-list a:hover{color:#fff;}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:13px;color:rgba(255,255,255,.72);}
.footer-contact i{color:var(--c-brand);margin-right:8px;width:14px;}
.footer-bottom{
  margin-top:52px;padding:22px 0 26px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.55);
}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom-links a{color:rgba(255,255,255,.62);font-size:12.5px;}
.footer-bottom-links a:hover{color:#fff;}
.to-top{display:inline-flex;align-items:center;gap:7px;color:rgba(255,255,255,.72);font-size:12.5px;padding:8px 14px;border:1px solid rgba(255,255,255,.2);border-radius:var(--r-pill);}
.to-top:hover{color:#fff;border-color:var(--c-brand);background:rgba(18,184,134,.16);}

/* 底部固定转化条 */
.fixed-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:flex;align-items:center;gap:16px;
  padding:12px 14px 12px 22px;border-radius:var(--r-pill);
  background:var(--c-ink);color:#fff;box-shadow:0 18px 40px rgba(15,23,20,.28);
  transition:opacity .3s ease,transform .3s ease;
}
.fixed-cta-text{font-size:13.5px;font-weight:600;color:rgba(255,255,255,.84);white-space:nowrap;}
.fixed-cta.is-hidden{opacity:0;transform:translateY(14px);pointer-events:none;}

/* 响应式 */
@media screen and (max-width:1279px){
  .hero-cat h1{font-size:38px;}
}
@media screen and (max-width:1023px){
  .section{padding:64px 0;}
  .section-tight{padding:48px 0;}
  .hero-inner{padding-top:72px;padding-bottom:64px;}
  .hero-cat h1{font-size:34px;}
  .section-head{margin-bottom:32px;}
  .section-head h2,.section-dark h2{font-size:26px;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;margin-left:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--c-border);
    box-shadow:var(--sh-2);padding:10px 20px 18px;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .main-nav a{padding:14px 4px;border-bottom:1px solid var(--c-border);font-size:15px;}
  .main-nav a::after{display:none;}
  .main-nav a.active{color:var(--c-brand-dark);}
  .nav-toggle{display:flex;}
  .header-actions .btn{display:none;}
  .cta-block{flex-direction:column;align-items:flex-start;padding:36px 30px;}
  .fixed-cta{right:16px;bottom:16px;}
}
@media screen and (max-width:639px){
  body{font-size:15px;padding-bottom:78px;}
  .row{padding-left:8px;padding-right:8px;}
  .column,.columns{padding-left:8px;padding-right:8px;}
  .row .row{margin-left:-8px;margin-right:-8px;}
  .topbar-inner{flex-direction:column;align-items:flex-start;gap:4px;padding-top:8px;padding-bottom:8px;}
  .topbar-domain{display:none;}
  .section{padding:48px 0;}
  .section-tight{padding:40px 0;}
  .hero-inner{padding-top:52px;padding-bottom:48px;}
  .hero-cat h1{font-size:27px;line-height:1.35;}
  .hero-lead{font-size:15px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .hero-badges{gap:14px;margin-top:26px;}
  .brand-text{font-size:16px;}
  .brand-text em{font-size:11px;}
  .step-card{padding:24px 4px;}
  .step-num{font-size:40px;}
  .step-media{margin-top:18px;}
  .device-item{padding-left:16px;}
  .cta-block{padding:28px 20px;border-radius:18px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-q{font-size:15px;padding:18px 0;}
  .faq-a p{padding-right:0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .fixed-cta{
    left:0;right:0;bottom:0;border-radius:0;padding:12px 16px;
    justify-content:space-between;gap:10px;
  }
  .fixed-cta-text{font-size:13px;overflow:hidden;text-overflow:ellipsis;}
}

/* roulang page: category2 */
:root{
  --c-brand:#12B886;
  --c-brand-dark:#0B8F66;
  --c-brand-soft:#E7F7F1;
  --c-accent:#FF6B35;
  --c-violet:#6C4BF4;
  --c-ink:#0F1714;
  --c-bg:#F5F8F6;
  --c-surface:#FFFFFF;
  --c-border:#E3EAE6;
  --t-1:#17201C;
  --t-2:#5B6B64;
  --t-3:#8E9C96;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,23,20,.06);
  --sh-2:0 14px 34px rgba(15,23,20,.09);
  --gap-sec:88px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{
  background:var(--c-bg);
  color:var(--t-1);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-brand-dark);text-decoration:none;transition:color .22s ease,opacity .22s ease}
a:hover{color:var(--c-brand)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--t-1);font-weight:700;letter-spacing:.2px}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:20px}
li{margin-bottom:8px}
:focus{outline:none}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--c-brand-soft);color:var(--c-brand-dark)}

/* ===== 栅格覆盖 ===== */
.row{
  display:flex;
  flex-wrap:wrap;
  gap:24px;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.row::before,.row::after{display:none}
.column{float:none;padding-left:0;padding-right:0;min-width:0}
.column.small-12{flex:0 0 100%;max-width:100%}
@media screen and (min-width:640px){
  .column.medium-6{flex:0 0 calc(50% - 12px);max-width:calc(50% - 12px)}
  .column.medium-8{flex:0 0 calc(66.666% - 8px);max-width:calc(66.666% - 8px)}
}
@media screen and (min-width:1024px){
  .column.large-3{flex:0 0 calc(25% - 18px);max-width:calc(25% - 18px)}
  .column.large-4{flex:0 0 calc(33.333% - 16px);max-width:calc(33.333% - 16px)}
  .column.large-5{flex:0 0 calc(41.666% - 14px);max-width:calc(41.666% - 14px)}
  .column.large-6{flex:0 0 calc(50% - 12px);max-width:calc(50% - 12px)}
  .column.large-7{flex:0 0 calc(58.333% - 10px);max-width:calc(58.333% - 10px)}
  .column.large-9{flex:0 0 calc(75% - 6px);max-width:calc(75% - 6px)}
}

/* ===== 顶部信息条 ===== */
.topbar{background:var(--c-ink);color:#fff;font-size:13px;position:relative;z-index:60}
.topbar-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  min-height:40px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.topbar-left{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.9);padding:8px 0}
.topbar-left i{color:var(--c-brand)}
.topbar-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;padding:8px 0}
.topbar-links a{color:rgba(255,255,255,.82);font-size:13px}
.topbar-links a:hover{color:var(--c-accent)}
.topbar-domain{color:rgba(255,255,255,.42);font-size:12px;letter-spacing:.4px}
@media screen and (max-width:519px){
  .topbar-domain{display:none}
  .topbar-inner{font-size:12px;gap:10px}
  .topbar-links{gap:14px}
}

/* ===== 主导航 ===== */
.site-header{
  position:sticky;top:0;z-index:55;
  background:rgba(255,255,255,.98);
  backdrop-filter:saturate(160%) blur(6px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled{border-bottom-color:var(--c-border);box-shadow:var(--sh-1)}
.header-inner{
  align-items:center;justify-content:space-between;
  min-height:70px;gap:20px;position:relative;
}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,var(--c-brand),var(--c-brand-dark));
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;flex:0 0 auto;box-shadow:0 6px 16px rgba(18,184,134,.28);
}
.brand-text{display:inline-flex;align-items:baseline;gap:3px;line-height:1}
.brand-text strong{font-size:19px;font-weight:800;color:var(--t-1);letter-spacing:.5px}
.brand-dot{color:var(--c-violet);font-weight:800;font-size:15px;transform:translateY(-1px)}
.brand-text em{font-style:normal;font-size:13px;color:var(--t-2);font-weight:600;letter-spacing:.4px}
.main-nav{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center}
.main-nav a{
  position:relative;display:inline-block;
  padding:8px 12px;font-size:15px;font-weight:600;color:var(--t-2);
  border-radius:var(--r-sm);
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--c-brand);border-radius:2px;transform:scaleX(0);transform-origin:center;
  transition:transform .22s ease;
}
.main-nav a:hover{color:var(--t-1);background:var(--c-brand-soft)}
.main-nav a.active{color:var(--c-brand-dark)}
.main-nav a.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;line-height:1;cursor:pointer;
  border:1.5px solid transparent;text-decoration:none;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn:active{transform:translateY(1px) scale(.995)}
.btn-primary{background:var(--c-brand);color:#fff;box-shadow:0 6px 16px rgba(18,184,134,.24)}
.btn-primary:hover{background:var(--c-brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(255,107,53,.28)}
.btn-accent:hover{background:#EB5A25;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;color:var(--c-brand-dark);border-color:rgba(18,184,134,.55)}
.btn-ghost:hover{background:var(--c-brand-soft);color:var(--c-brand-dark);border-color:var(--c-brand);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--t-1);border-color:var(--c-border)}
.btn-light:hover{color:var(--c-brand-dark);border-color:var(--c-brand);transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--c-border);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t-1);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

@media screen and (max-width:1023px){
  .header-inner{min-height:64px}
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:absolute;top:calc(100% + 1px);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;padding:12px 20px 18px;border-bottom:1px solid var(--c-border);
    box-shadow:var(--sh-2);border-radius:0 0 var(--r-md) var(--r-md);
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 10px;font-size:15px;border-radius:var(--r-sm)}
  .main-nav a::after{display:none}
  .main-nav a.active{background:var(--c-brand-soft)}
  .header-actions .btn-sm{display:none}
}
@media screen and (max-width:519px){
  .brand-text em{display:none}
  .brand-text strong{font-size:18px}
  .row{padding:0 16px;gap:20px}
  .topbar-inner{padding:0 16px}
}

/* ===== 面包屑 ===== */
.breadcrumb-bar{background:var(--c-surface);border-bottom:1px solid var(--c-border)}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:nowrap;overflow-x:auto;
  font-size:13px;color:var(--t-3);padding:12px 0;margin:0;white-space:nowrap;
  scrollbar-width:none;
}
.breadcrumb::-webkit-scrollbar{display:none}
.breadcrumb a{color:var(--t-2)}
.breadcrumb a:hover{color:var(--c-brand-dark)}
.breadcrumb .sep{color:#C6D2CC}
.breadcrumb .current{color:var(--t-3)}

/* ===== 页面头部 ===== */
.page-hero{
  position:relative;background:var(--c-surface);
  padding:64px 0 56px;border-bottom:1px solid var(--c-border);overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(18,184,134,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.55;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  pointer-events:none;
}
.page-hero .row{position:relative;z-index:1;flex-direction:column;align-items:center;text-align:center;gap:0}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(108,75,244,.09);color:var(--c-violet);
  border-radius:var(--r-pill);padding:7px 16px;font-size:13px;font-weight:700;
  margin-bottom:20px;
}
.hero-tag i{font-size:12px}
.page-hero h1{
  font-size:40px;line-height:1.25;font-weight:800;max-width:880px;margin:0 auto 18px;
}
.page-hero h1 .hl{color:var(--c-brand-dark)}
.hero-lead{
  font-size:16px;color:var(--t-2);max-width:720px;margin:0 auto 26px;line-height:1.8;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.hero-badges{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:30px;
}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--c-brand-soft);color:var(--c-brand-dark);
  border-radius:var(--r-pill);padding:7px 15px;font-size:13px;font-weight:600;
}
.chip i{font-size:12px}
.chip.violet{background:rgba(108,75,244,.09);color:var(--c-violet)}

/* ===== 主体布局 ===== */
.section{padding:var(--gap-sec) 0}
.section-tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:30px;line-height:1.3;margin-bottom:14px}
.section-head p{color:var(--t-2);font-size:15px;margin:0}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;color:var(--c-violet);
  letter-spacing:1px;margin-bottom:12px;
}

/* ===== 侧栏目录 ===== */
.side-col{position:relative}
.toc-card{
  position:sticky;top:104px;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-md);padding:22px 20px;box-shadow:var(--sh-1);
}
.toc-title{
  font-size:14px;font-weight:700;color:var(--t-1);
  display:flex;align-items:center;gap:8px;margin-bottom:14px;padding-bottom:12px;
  border-bottom:1px solid var(--c-border);
}
.toc-title i{color:var(--c-brand)}
.toc-list{list-style:none;margin:0 0 18px;padding:0}
.toc-list li{margin:0}
.toc-list a{
  display:flex;align-items:center;gap:10px;
  padding:10px 10px;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;color:var(--t-2);
}
.toc-list a .num{
  font-variant-numeric:tabular-nums;font-size:12px;font-weight:800;
  color:var(--c-violet);background:rgba(108,75,244,.08);
  border-radius:6px;padding:2px 7px;
}
.toc-list a:hover{background:var(--c-brand-soft);color:var(--c-brand-dark)}
.toc-help{
  background:var(--c-bg);border-radius:var(--r-sm);padding:16px;
  border:1px dashed #CFDCD6;
}
.toc-help p{font-size:13px;color:var(--t-2);margin:0 0 12px;line-height:1.7}
@media screen and (max-width:1023px){
  .toc-card{position:static;top:auto;margin-bottom:32px}
  .toc-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
}
@media screen and (max-width:519px){
  .toc-list{grid-template-columns:1fr}
}

/* ===== 分组内容 ===== */
.group-block{margin-bottom:44px}
.group-block:last-child{margin-bottom:0}
.group-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:18px}
.group-num{
  flex:0 0 auto;width:44px;height:44px;border-radius:12px;
  background:var(--c-brand-soft);color:var(--c-brand-dark);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;font-variant-numeric:tabular-nums;
}
.group-head h2{font-size:24px;line-height:1.35;margin-bottom:6px}
.group-head .group-desc{font-size:14px;color:var(--t-2);margin:0;line-height:1.7}

.qa-panel{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-md);overflow:hidden;
}
.qa-item{border-bottom:1px solid var(--c-border)}
.qa-item:last-child{border-bottom:none}
.qa-q{
  width:100%;text-align:left;background:transparent;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--t-1);
  transition:color .2s ease,background-color .2s ease;
}
.qa-q:hover{color:var(--c-brand-dark);background:#FBFDFC}
.qa-q .qa-ico{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--c-brand-soft);color:var(--c-brand-dark);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;transition:transform .28s ease,background-color .28s ease;
}
.qa-item.open .qa-q .qa-ico{transform:rotate(135deg);background:var(--c-brand);color:#fff}
.qa-a{
  max-height:0;overflow:hidden;
  transition:max-height .34s ease;
}
.qa-item.open .qa-a{max-height:520px}
.qa-a-inner{padding:0 20px 20px 20px;font-size:15px;color:var(--t-2);line-height:1.8}
.qa-a-inner p{margin:0 0 10px}
.qa-a-inner ul{margin:0;padding-left:20px}
.qa-a-inner li{margin-bottom:6px}
.qa-a-inner li::marker{color:var(--c-brand)}

/* ===== 要点清单 ===== */
.check-card{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-md);padding:22px 22px 14px;margin-top:18px;
}
.check-card h3{
  font-size:17px;margin-bottom:14px;display:flex;align-items:center;gap:9px;
}
.check-card h3 i{color:var(--c-brand)}
.check-list{list-style:none;margin:0;padding:0}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--t-2);line-height:1.75;margin-bottom:10px;
}
.check-list li i{
  color:var(--c-brand);font-size:13px;margin-top:6px;flex:0 0 auto;
}
.check-list li strong{color:var(--t-1);font-weight:700}

/* ===== 图文卡 ===== */
.figure-card{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-md);overflow:hidden;margin-top:20px;
  display:flex;flex-wrap:wrap;
}
.figure-card .fig-media{
  flex:1 1 260px;min-width:220px;overflow:hidden;background:#EEF3F1;
}
.figure-card .fig-media img{
  width:100%;height:100%;min-height:190px;object-fit:cover;
  aspect-ratio:16/10;transition:transform .4s ease;
}
.figure-card:hover .fig-media img{transform:scale(1.04)}
.figure-card .fig-body{flex:1 1 300px;padding:22px}
.figure-card .fig-body h3{font-size:18px;margin-bottom:10px}
.figure-card .fig-body p{font-size:14.5px;color:var(--t-2);margin:0}

/* ===== FAQ 手风琴 ===== */
.faq-sec{background:var(--c-surface);border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}
.acc{border-top:1px solid var(--c-border)}
.acc-item{border-bottom:1px solid var(--c-border)}
.acc-q{
  width:100%;background:transparent;border:none;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;font-size:16.5px;font-weight:600;color:var(--t-1);
  transition:color .2s ease;
}
.acc-q:hover{color:var(--c-brand-dark)}
.acc-q .acc-ico{
  flex:0 0 auto;font-size:14px;color:var(--c-brand-dark);
  transition:transform .3s ease;
}
.acc-item.open .acc-q .acc-ico{transform:rotate(45deg)}
.acc-a{max-height:0;overflow:hidden;transition:max-height .34s ease}
.acc-item.open .acc-a{max-height:420px}
.acc-a-inner{padding:0 4px 22px;color:var(--t-2);font-size:15px;line-height:1.85;max-width:860px}
.acc-a-inner p:last-child{margin-bottom:0}

/* ===== CTA ===== */
.cta-block{
  background:var(--c-brand-soft);border-radius:24px;
  padding:44px 42px;display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;
}
.cta-block h2{font-size:26px;line-height:1.35;margin-bottom:10px}
.cta-block p{color:var(--t-2);font-size:15px;margin:0;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--c-ink);color:#fff;padding:64px 0 0;margin-top:0;
}
.site-footer .row{gap:28px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;font-size:15px;border-radius:10px;box-shadow:none}
.footer-brand strong{display:block;font-size:17px;font-weight:800;color:#fff;line-height:1.2}
.footer-brand em{display:block;font-style:normal;font-size:12.5px;color:rgba(255,255,255,.6);margin-top:2px}
.footer-desc{font-size:13.5px;color:rgba(255,255,255,.62);line-height:1.85;margin:0}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-list{list-style:none;margin:0;padding:0}
.footer-list li{margin-bottom:10px}
.footer-list a{font-size:13.5px;color:rgba(255,255,255,.66)}
.footer-list a:hover{color:#fff}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact span{
  font-size:13.5px;color:rgba(255,255,255,.66);
  display:flex;align-items:flex-start;gap:9px;line-height:1.6;
}
.footer-contact i{color:var(--c-brand);margin-top:4px;font-size:12px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);margin-top:48px;padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom-links a{color:rgba(255,255,255,.6);font-size:13px}
.footer-bottom-links a:hover{color:#fff}
.to-top{display:inline-flex;align-items:center;gap:7px;color:rgba(255,255,255,.7);font-size:13px}
.to-top:hover{color:var(--c-brand)}

/* ===== 底部固定转化条 ===== */
.convert-bar{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:16px;
  background:var(--c-ink);color:#fff;
  border-radius:var(--r-pill);padding:10px 12px 10px 22px;
  box-shadow:0 18px 40px rgba(15,23,20,.28);
  transition:opacity .3s ease,transform .3s ease;
}
.convert-bar .cb-text{font-size:13.5px;color:rgba(255,255,255,.85);white-space:nowrap}
.convert-bar .cb-text strong{color:#fff;font-weight:700}
.convert-bar .btn{height:42px;padding:0 20px;border-radius:var(--r-pill);font-size:14px}
.convert-bar.is-hidden{opacity:0;transform:translateY(14px);pointer-events:none}
@media screen and (max-width:767px){
  .convert-bar{
    left:0;right:0;bottom:0;border-radius:0;
    padding:10px 16px;justify-content:space-between;gap:12px;
    min-height:64px;
  }
  .convert-bar .cb-text{font-size:13px;overflow:hidden;text-overflow:ellipsis}
  body{padding-bottom:72px}
}

/* ===== 平板/移动端板块间距 ===== */
@media screen and (max-width:1023px){
  :root{--gap-sec:64px}
  .page-hero{padding:52px 0 46px}
  .page-hero h1{font-size:33px}
  .section-head h2{font-size:26px}
  .cta-block{padding:34px 28px}
  .cta-block h2{font-size:23px}
}
@media screen and (max-width:639px){
  :root{--gap-sec:48px}
  .page-hero{padding:40px 0 36px}
  .page-hero h1{font-size:27px}
  .hero-lead{font-size:15px}
  .hero-actions .btn{width:100%}
  .section-head h2{font-size:23px}
  .group-head h2{font-size:20px}
  .group-num{width:38px;height:38px;font-size:14px;border-radius:10px}
  .qa-q{padding:16px 16px;font-size:15px}
  .qa-a-inner{padding:0 16px 18px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .site-footer{padding-top:48px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}
@media screen and (min-width:1280px){
  .page-hero h1{font-size:44px}
}

/* roulang page: category3 */
:root{
  --c-brand:#12B886;
  --c-brand-dark:#0B8F66;
  --c-brand-soft:#E7F7F1;
  --c-accent:#FF6B35;
  --c-violet:#6C4BF4;
  --c-ink:#0F1714;
  --c-bg:#F5F8F6;
  --c-surface:#FFFFFF;
  --c-border:#E3EAE6;
  --t-1:#17201C;
  --t-2:#5B6B64;
  --t-3:#8E9C96;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,23,20,.06);
  --sh-2:0 14px 34px rgba(15,23,20,.09);
  --gap-sec:88px;
  --pad-x:9px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t-1);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-brand-dark);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--c-brand);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:4px;}
.row{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:var(--pad-x);padding-right:var(--pad-x);}
.row .row{padding-left:0;padding-right:0;}
.column{padding-left:15px;padding-right:15px;}
.section{padding:var(--gap-sec) 0;}
.section-tight{padding:56px 0;}
.sec-head{max-width:760px;margin-bottom:38px;}
.sec-head h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:.2px;}
.sec-head p{margin-top:14px;color:var(--t-2);font-size:16px;line-height:1.75;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:1px;
  color:var(--c-violet);background:rgba(108,75,244,.09);
  border-radius:var(--r-pill);padding:6px 14px;margin-bottom:16px;
}
.eyebrow i{font-size:11px;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--c-ink);color:rgba(255,255,255,.82);font-size:13px;}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:40px;padding-top:6px;padding-bottom:6px;flex-wrap:wrap;
}
.topbar-note{display:flex;align-items:center;gap:8px;margin:0;color:rgba(255,255,255,.86);}
.topbar-note i{color:var(--c-brand);font-size:12px;}
.topbar-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.topbar-actions a{color:rgba(255,255,255,.8);font-size:13px;}
.topbar-actions a:hover{color:var(--c-accent);}
.topbar-domain{color:rgba(255,255,255,.4);font-size:12px;letter-spacing:.4px;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled{border-bottom-color:var(--c-border);box-shadow:var(--sh-1);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:22px;min-height:76px;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--t-1);}
.brand:hover{color:var(--t-1);}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;
  background:linear-gradient(140deg,var(--c-brand),var(--c-brand-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:0 6px 16px rgba(18,184,134,.28);
}
.brand-text{display:flex;align-items:baseline;gap:2px;line-height:1.2;}
.brand-text strong{font-size:20px;font-weight:800;letter-spacing:.5px;}
.brand-dot{color:var(--c-brand);font-weight:800;margin:0 2px;}
.brand-text em{font-style:normal;font-size:13px;color:var(--t-2);font-weight:600;letter-spacing:.5px;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;display:inline-block;padding:10px 14px;
  font-size:15px;font-weight:600;color:var(--t-2);border-radius:var(--r-sm);
}
.main-nav a:hover{color:var(--c-brand-dark);background:var(--c-brand-soft);}
.main-nav a.active{color:var(--c-brand-dark);}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--c-brand);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-border);
  background:#fff;border-radius:var(--r-sm);padding:11px 10px;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:var(--t-1);border-radius:2px;margin:4px 0;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;letter-spacing:.3px;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--c-brand);color:#fff;box-shadow:0 6px 16px rgba(18,184,134,.22);}
.btn-primary:hover{background:var(--c-brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(255,107,53,.28);}
.btn-accent:hover{background:#F2551C;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;border-color:var(--c-brand);color:var(--c-brand-dark);}
.btn-ghost:hover{background:var(--c-brand-soft);color:var(--c-brand-dark);transform:translateY(-1px);}
.btn-plain{background:#fff;border-color:var(--c-border);color:var(--t-1);}
.btn-plain:hover{border-color:var(--c-brand);color:var(--c-brand-dark);}

/* ---------- 分类页头部 ---------- */
.cat-hero{
  background:
    radial-gradient(820px 300px at 88% -20%,rgba(18,184,134,.16),transparent 70%),
    radial-gradient(600px 260px at 6% 0%,rgba(108,75,244,.10),transparent 68%),
    var(--c-surface);
  border-bottom:1px solid var(--c-border);
  padding:56px 0 44px;
}
.cat-hero-grid{display:flex;align-items:flex-start;justify-content:space-between;gap:40px;}
.cat-hero-main{max-width:720px;}
.cat-hero h1{font-size:38px;line-height:1.25;font-weight:800;letter-spacing:.4px;}
.cat-hero .lead{margin-top:18px;font-size:16.5px;line-height:1.8;color:var(--t-2);max-width:660px;}
.cat-hero .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.hero-badge{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  background:var(--c-brand-soft);color:var(--c-brand-dark);
  border:1px solid rgba(18,184,134,.28);
  border-radius:var(--r-pill);padding:8px 16px;font-size:13px;font-weight:700;
}
.cat-anchors{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;
  padding-top:24px;border-top:1px solid var(--c-border);
}
.cat-anchors a{
  font-size:13.5px;font-weight:600;color:var(--t-2);
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-pill);
  padding:8px 16px;
}
.cat-anchors a:hover{border-color:var(--c-brand);color:var(--c-brand-dark);background:var(--c-brand-soft);}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:70px;}
.timeline::before{
  content:"";position:absolute;left:23px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--c-brand),rgba(18,184,134,.15));
  border-radius:2px;
}
.tl-item{position:relative;margin-bottom:22px;}
.tl-item:last-child{margin-bottom:0;}
.tl-num{
  position:absolute;left:-70px;top:16px;
  width:48px;height:48px;border-radius:14px;
  background:#fff;border:1px solid var(--c-border);
  color:var(--c-brand-dark);font-weight:800;font-size:16px;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;box-shadow:var(--sh-1);
}
.tl-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  padding:24px 26px;box-shadow:var(--sh-1);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.tl-card:hover{border-color:rgba(18,184,134,.35);box-shadow:var(--sh-2);transform:translateY(-2px);}
.tl-card h3{font-size:19px;font-weight:700;line-height:1.45;}
.tl-card p{margin-top:10px;color:var(--t-2);font-size:15px;line-height:1.75;}
.tl-meta{
  display:inline-block;margin-top:14px;font-size:12px;font-weight:700;
  color:var(--c-violet);background:rgba(108,75,244,.08);
  border-radius:var(--r-pill);padding:4px 12px;
}

/* ---------- 服务卡网格 ---------- */
.card-grid{margin-top:8px;}
.svc-card{
  height:100%;background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-md);padding:26px 24px;box-shadow:var(--sh-1);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.svc-card:hover{border-color:rgba(18,184,134,.35);box-shadow:var(--sh-2);transform:translateY(-2px);}
.svc-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--c-brand-soft);color:var(--c-brand-dark);font-size:17px;margin-bottom:16px;
}
.svc-card h3{font-size:18px;font-weight:700;line-height:1.45;}
.svc-card>p{margin-top:10px;color:var(--t-2);font-size:14.5px;line-height:1.75;}
.tick-list{margin-top:16px;}
.tick-list li{
  position:relative;padding-left:24px;margin-bottom:9px;
  font-size:14.5px;color:var(--t-2);line-height:1.7;
}
.tick-list li:last-child{margin-bottom:0;}
.tick-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:1px;font-size:11px;color:var(--c-brand);
}

/* ---------- 图文分栏 ---------- */
.split{display:flex;flex-wrap:wrap;align-items:center;}
.split-text h2{font-size:28px;line-height:1.32;font-weight:700;}
.split-text>p{margin-top:16px;color:var(--t-2);font-size:15.5px;line-height:1.8;}
.split-text .tick-list{margin-top:20px;}
.split-text .btn{margin-top:26px;}
.window-frame{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);
  box-shadow:var(--sh-2);overflow:hidden;
}
.window-bar{
  display:flex;align-items:center;gap:7px;padding:12px 16px;
  background:#F7FAF8;border-bottom:1px solid var(--c-border);
}
.window-bar span{width:9px;height:9px;border-radius:50%;background:#D7E2DC;}
.window-bar span:nth-child(1){background:#FF6B35;opacity:.7;}
.window-bar span:nth-child(2){background:#F2C14E;opacity:.75;}
.window-bar span:nth-child(3){background:var(--c-brand);opacity:.65;}
.window-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EEF3F1;}

/* ---------- 深色统计条 ---------- */
.stat-band{background:var(--c-ink);color:#fff;padding:52px 0;}
.stat-grid{display:flex;flex-wrap:wrap;text-align:left;}
.stat-cell{padding:14px 15px;}
.stat-num{
  display:block;font-size:42px;line-height:1.1;font-weight:700;
  font-variant-numeric:tabular-nums;letter-spacing:.5px;color:#fff;
}
.stat-num small{font-size:18px;font-weight:600;color:var(--c-brand);margin-left:4px;}
.stat-label{display:block;margin-top:8px;font-size:13.5px;color:rgba(255,255,255,.66);}
.stat-note{
  margin-top:6px;padding:0 15px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-border);}
.faq-item{border-bottom:1px solid var(--c-border);}
.faq-q{
  width:100%;background:transparent;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;
  font-size:16px;font-weight:600;color:var(--t-1);line-height:1.6;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--c-brand-dark);}
.faq-plus{
  flex:0 0 26px;width:26px;height:26px;position:relative;
  border-radius:50%;background:var(--c-brand-soft);
  transition:transform .3s ease,background .3s ease;
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:var(--c-brand-dark);border-radius:2px;
  left:50%;top:50%;transform:translate(-50%,-50%);
}
.faq-plus::before{width:12px;height:2px;}
.faq-plus::after{width:2px;height:12px;}
.faq-item.open .faq-plus{transform:rotate(135deg);background:rgba(18,184,134,.18);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-a p{padding:0 4px 24px;color:var(--t-2);font-size:15px;line-height:1.8;max-width:820px;}

/* ---------- CTA 块 ---------- */
.cta-block{
  background:var(--c-brand-soft);border-radius:24px;padding:46px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-block h2{font-size:27px;line-height:1.35;font-weight:700;max-width:620px;}
.cta-block p{margin-top:12px;color:var(--t-2);font-size:15.5px;line-height:1.75;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.75);padding:66px 0 26px;margin-top:0;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{display:block;color:#fff;font-size:18px;font-weight:800;line-height:1.3;}
.footer-brand em{font-style:normal;font-size:12.5px;color:rgba(255,255,255,.6);letter-spacing:.5px;}
.footer-desc{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px;}
.footer-title{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;}
.footer-list li{margin-bottom:10px;}
.footer-list a{color:rgba(255,255,255,.72);font-size:13.5px;}
.footer-list a:hover{color:#fff;}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:13.5px;color:rgba(255,255,255,.7);}
.footer-contact i{color:var(--c-brand);width:18px;margin-right:6px;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.5);
}
.footer-bottom-links{display:flex;gap:16px;flex-wrap:wrap;}
.footer-bottom-links a{color:rgba(255,255,255,.55);font-size:12.5px;}
.footer-bottom-links a:hover{color:#fff;}
.to-top{display:inline-flex;align-items:center;gap:7px;color:rgba(255,255,255,.6);font-size:12.5px;}
.to-top:hover{color:var(--c-brand);}
.to-top i{font-size:11px;}

/* ---------- 底部固定转化条 ---------- */
.float-bar{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:flex;align-items:center;gap:18px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-pill);
  box-shadow:var(--sh-2);padding:12px 12px 12px 24px;
  transition:opacity .3s ease,transform .3s ease;
}
.float-bar.is-hidden{opacity:0;transform:translateY(14px);pointer-events:none;}
.float-bar p{margin:0;font-size:13.5px;color:var(--t-2);max-width:230px;line-height:1.5;}
.float-bar .btn{height:44px;padding:0 20px;font-size:14px;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  :root{--gap-sec:64px;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--c-border);
    box-shadow:var(--sh-2);flex-direction:column;align-items:stretch;
    padding:10px 16px 18px;display:none;
  }
  .main-nav.open{display:flex;}
  .main-nav a{padding:13px 12px;font-size:15.5px;}
  .main-nav a.active::after{left:12px;right:auto;width:34px;bottom:6px;}
  .nav-toggle{display:block;}
  .cat-hero{padding:44px 0 36px;}
  .cat-hero h1{font-size:32px;}
  .cat-hero-grid{flex-direction:column;gap:22px;}
  .stat-num{font-size:36px;}
}
@media screen and (max-width:767px){
  :root{--gap-sec:48px;--pad-x:1px;}
  body{font-size:15.5px;padding-bottom:0;}
  .topbar-inner{justify-content:flex-start;gap:10px;}
  .topbar-actions{gap:14px;}
  .topbar-domain{display:none;}
  .header-inner{min-height:66px;}
  .brand-mark{width:38px;height:38px;flex:0 0 38px;font-size:16px;border-radius:11px;}
  .brand-text strong{font-size:18px;}
  .brand-text em{font-size:12px;}
  .header-actions .btn-sm{display:none;}
  .cat-hero h1{font-size:26px;}
  .cat-hero .lead{font-size:15.5px;}
  .sec-head h2{font-size:24px;}
  .split-text h2{font-size:23px;}
  .cta-block{padding:32px 24px;border-radius:18px;}
  .cta-block h2{font-size:22px;}
  .cta-actions .btn{width:100%;}
  .timeline{padding-left:0;}
  .timeline::before{left:20px;}
  .tl-item{margin-bottom:18px;}
  .tl-num{position:static;width:44px;height:44px;margin-bottom:12px;left:auto;top:auto;}
  .tl-card{padding:20px 20px;}
  .stat-band{padding:40px 0;}
  .stat-num{font-size:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .to-top{align-self:flex-start;}
  .site-footer{padding-bottom:96px;}
  .float-bar{
    left:0;right:0;bottom:0;border-radius:0;border-left:0;border-right:0;border-bottom:0;
    padding:10px 16px;justify-content:space-between;gap:12px;
  }
  .float-bar p{max-width:none;font-size:13px;flex:1 1 auto;}
  .float-bar .btn{flex:0 0 auto;height:44px;padding:0 18px;}
}
@media screen and (max-width:520px){
  .stat-cell{flex:0 0 50%;max-width:50%;}
  .cat-anchors a{font-size:13px;padding:7px 13px;}
  .faq-q{font-size:15px;padding:18px 2px;}
  .svc-card{padding:22px 20px;}
}
@media screen and (min-width:1280px){
  .row{max-width:1200px;}
}
@media screen and (min-width:1440px){
  .cat-hero h1{font-size:40px;}
}