/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --brand-600:#12629C;
  --brand-700:#0C4A76;
  --brand-50:#EFF6FB;
  --brand-100:#D9EAF5;
  --accent:#F07C2A;
  --accent-700:#D2661A;
  --green:#1F9D74;
  --ink:#12212E;
  --text:#4A5A68;
  --muted:#8794A1;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --line:#E4EAF1;
  --dark:#0E2233;
  --dark-2:#12324A;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-sm:0 2px 8px rgba(18,34,46,.06);
  --shadow-md:0 8px 24px rgba(18,34,46,.08);
  --shadow-lg:0 18px 40px rgba(18,34,46,.10);
  --container:1200px;
  --gap:24px;
  --section:96px;
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;font-size:100%;}
body{
  margin:0;
  padding:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;line-height:1.3;}
p{margin:0 0 14px;max-width:760px;}
p:last-child{margin-bottom:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out;}
a:hover{color:var(--brand-700);}
img{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:3px;border-radius:4px;}
/* Foundation 覆盖 */
.row{max-width:none;margin-left:0;margin-right:0;}
.row .row{margin-left:0;margin-right:0;}
.column,.columns{padding-left:0;padding-right:0;}
body{color:var(--text);}
a{color:var(--brand-600);}
/* ============ 容器与通用工具 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{
  padding-top:var(--section);
  padding-bottom:var(--section);
  scroll-margin-top:88px;
}
.section--tight{padding-top:72px;padding-bottom:72px;}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:40px;
}
.section-head__text{max-width:640px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--brand-600);
  background:var(--brand-50);
  border-radius:999px;
  padding:4px 12px;
  margin-bottom:12px;
}
.section-title{font-size:30px;line-height:1.3;font-weight:700;}
.section-desc{font-size:15px;color:var(--muted);line-height:1.8;margin-top:10px;max-width:620px;}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  color:var(--brand-600);
  background:var(--brand-50);
  border-radius:999px;
  padding:4px 10px;
  line-height:1.4;
  white-space:nowrap;
}
.badge--green{color:var(--green);background:rgba(31,157,116,.10);}
.dot{display:inline-block;width:3px;height:3px;border-radius:50%;background:var(--line);}
.meta-line{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:12.5px;
  color:var(--muted);
}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 28px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;
}
.btn-primary{
  background:var(--accent);
  color:#fff;
  box-shadow:0 6px 16px rgba(240,124,42,.24);
}
.btn-primary:hover{background:var(--accent-700);color:#fff;box-shadow:0 10px 22px rgba(240,124,42,.30);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 10px rgba(240,124,42,.22);}
.btn-secondary{
  background:#fff;
  color:var(--brand-600);
  border:1px solid var(--brand-600);
}
.btn-secondary:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);box-shadow:var(--shadow-sm);}
.btn-secondary:active{transform:translateY(1px);}
.btn-ghost-light{
  background:rgba(255,255,255,.06);
  color:#fff;
  border:1px solid rgba(255,255,255,.34);
}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-1px);}
.btn-lg{padding:16px 36px;font-size:16px;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-600);
}
.text-link i{transition:transform .18s ease-out;font-size:12px;}
.text-link:hover i{transform:translateX(2px);}
/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:#F2F6FA;
  border-bottom:1px solid transparent;
  transition:background-color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.site-header.is-scrolled{
  background:#F2F6FA;
  border-bottom-color:var(--line);
  box-shadow:0 2px 10px rgba(18,34,46,.06);
}
.nav-shell{
  display:flex;
  align-items:center;
  gap:20px;
  background:#fff;
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  padding:12px 16px;
  margin-top:14px;
  margin-bottom:14px;
  transition:padding .2s ease-out,box-shadow .2s ease-out;
}
.site-header.is-scrolled .nav-shell{
  padding:8px 16px;
  box-shadow:0 4px 14px rgba(18,34,46,.07);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:11px;
  background:var(--brand-600);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
  font-weight:700;
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:15.5px;font-weight:700;color:var(--ink);letter-spacing:0;}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.04em;}
.nav-cards{
  display:flex;
  align-items:center;
  gap:8px;
  flex:1 1 auto;
  justify-content:center;
}
.nav-card{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 16px;
  border-radius:12px;
  border:1px solid transparent;
  background:#F7F9FC;
  color:var(--text);
  font-size:14px;
  font-weight:600;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.nav-card i{font-size:13px;color:var(--brand-600);transition:color .18s ease-out;}
.nav-card:hover{
  background:var(--brand-50);
  color:var(--brand-700);
  border-color:var(--brand-100);
  transform:translateY(-1px);
}
.nav-card.is-active{
  background:var(--brand-50);
  color:var(--brand-700);
  border-color:var(--brand-600);
}
.nav-card.is-active i{color:var(--brand-700);}
.nav-cta{flex:0 0 auto;display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:11px;
  border:1px solid var(--line);
  background:#F7F9FC;
  color:var(--brand-600);
  font-size:16px;
  align-items:center;
  justify-content:center;
  transition:background-color .18s ease-out,border-color .18s ease-out;
}
.nav-toggle:hover{background:var(--brand-50);border-color:var(--brand-100);}
/* ============ Hero ============ */
.hero{
  position:relative;
  background:var(--dark);
  color:#D6E2EC;
  padding:64px 0 72px;
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:1px;
  background:rgba(255,255,255,.08);
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.02fr);
  gap:56px;
  align-items:center;
}
.hero-copy{max-width:620px;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:600;
  color:#BFD7E9;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:18px;
}
.hero-tag i{color:var(--accent);}
.hero h1{
  font-size:42px;
  line-height:1.25;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
  letter-spacing:0;
}
.hero h1 .hl{color:var(--accent);}
.hero-sub{
  font-size:16px;
  line-height:1.8;
  color:#AFC3D4;
  max-width:600px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.hero-metrics{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;
  max-width:620px;
}
.metric-mini{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:14px;
  padding:14px 16px;
}
.metric-mini strong{
  display:block;
  font-size:23px;
  font-weight:700;
  color:#fff;
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.metric-mini span{display:block;font-size:12px;color:#9EB4C6;margin-top:4px;line-height:1.5;}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  aspect-ratio:16 / 9;
  background:var(--dark-2);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:var(--shadow-lg);
}
.hero-figure img{
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.92;
}
.hero-float-card{
  position:absolute;
  left:-16px;
  bottom:-24px;
  width:250px;
  background:#fff;
  border-radius:14px;
  padding:16px 18px;
  box-shadow:var(--shadow-lg);
  border:1px solid var(--line);
}
.hero-float-card .fc-label{
  font-size:11.5px;
  color:var(--muted);
  display:flex;
  align-items:center;
  gap:6px;
  margin-bottom:6px;
}
.hero-float-card .fc-label i{color:var(--green);}
.hero-float-card .fc-value{
  font-size:26px;
  font-weight:700;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
  line-height:1.15;
}
.hero-float-card .fc-bar{
  height:6px;
  border-radius:999px;
  background:var(--brand-100);
  margin:10px 0 8px;
  overflow:hidden;
}
.hero-float-card .fc-bar span{display:block;height:100%;width:78%;background:var(--green);border-radius:999px;}
.hero-float-card .fc-note{font-size:11.5px;color:var(--muted);line-height:1.5;}
/* ============ 卖点区 ============ */
.features-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gap);
  align-items:stretch;
}
.feature-main{
  grid-column:span 7;
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  background:var(--card);
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  display:flex;
  flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.feature-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.feature-main__img{
  aspect-ratio:16 / 9;
  overflow:hidden;
  background:var(--brand-50);
}
.feature-main__img img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.feature-main:hover .feature-main__img img{transform:scale(1.03);}
.feature-main__body{padding:26px 28px 28px;}
.feature-main__body h3{font-size:22px;margin-bottom:10px;}
.feature-main__body p{font-size:15px;color:var(--text);line-height:1.8;max-width:560px;}
.feature-main__list{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.chip{
  font-size:12.5px;
  color:var(--brand-600);
  background:var(--brand-50);
  border-radius:999px;
  padding:5px 12px;
  font-weight:600;
}
.feature-side{
  grid-column:span 5;
  display:grid;
  grid-template-rows:repeat(3,minmax(0,1fr));
  gap:var(--gap);
}
.feature-mini{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 24px;
  box-shadow:var(--shadow-sm);
  display:flex;
  gap:16px;
  align-items:flex-start;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.feature-mini:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand-100);}
.feature-icon{
  width:44px;
  height:44px;
  flex:0 0 auto;
  border-radius:12px;
  background:var(--brand-50);
  color:var(--brand-600);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
}
.feature-mini h3{font-size:17px;margin-bottom:6px;}
.feature-mini p{font-size:14px;line-height:1.75;color:var(--text);margin:0;}
/* ============ 演示区 ============ */
.demo-row{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:48px;
  align-items:center;
  padding:36px 0;
  border-top:1px solid var(--line);
}
.demo-row:first-of-type{border-top:0;padding-top:0;}
.demo-media{grid-column:span 6;}
.demo-media__frame{
  border-radius:var(--radius-card);
  overflow:hidden;
  aspect-ratio:16 / 9;
  background:var(--brand-50);
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  position:relative;
}
.demo-media__frame img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.demo-media__frame:hover img{transform:scale(1.03);}
.demo-media__num{
  position:absolute;
  top:14px;
  left:14px;
  background:rgba(14,34,51,.84);
  color:#fff;
  font-size:12px;
  font-weight:600;
  padding:4px 12px;
  border-radius:999px;
  font-variant-numeric:tabular-nums;
}
.demo-copy{grid-column:span 6;}
.demo-copy h3{font-size:22px;margin-bottom:12px;}
.demo-copy p{font-size:15px;line-height:1.85;color:var(--text);max-width:520px;}
.demo-points{margin:18px 0 22px;display:grid;gap:10px;}
.demo-points li{
  display:flex;
  gap:10px;
  font-size:14.5px;
  color:var(--text);
  line-height:1.7;
}
.demo-points li i{color:var(--green);font-size:13px;margin-top:6px;}
.demo-row--reverse .demo-media{order:2;}
.demo-row--reverse .demo-copy{order:1;}
/* ============ 证据区 ============ */
.proof{
  background:#fff;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.proof-band{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  background:var(--brand-50);
  border:1px solid var(--brand-100);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.proof-band__item{
  padding:26px 24px;
  border-right:1px solid var(--brand-100);
}
.proof-band__item:last-child{border-right:0;}
.proof-band__item strong{
  display:block;
  font-size:30px;
  font-weight:700;
  color:var(--brand-700);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.proof-band__item span{display:block;font-size:13px;color:var(--text);margin-top:6px;line-height:1.6;}
.logo-strip{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
  margin-top:24px;
}
.logo-slot{
  border:1px dashed var(--line);
  border-radius:12px;
  padding:16px 14px;
  text-align:center;
  font-size:13px;
  font-weight:600;
  color:var(--muted);
  background:#FBFCFE;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:60px;
}
.logo-slot i{color:#B7C4D0;}
.quote-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:var(--gap);
  margin-top:32px;
}
.quote-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 28px;
  box-shadow:var(--shadow-sm);
  position:relative;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.quote-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.quote-card__mark{
  font-size:20px;
  color:var(--brand-100);
  margin-bottom:10px;
  display:block;
}
.quote-card p{font-size:15px;line-height:1.85;color:var(--text);margin-bottom:18px;}
.quote-card__who{display:flex;align-items:center;gap:12px;}
.quote-avatar{
  width:40px;height:40px;border-radius:50%;
  background:var(--brand-50);
  color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;
  flex:0 0 auto;
}
.quote-card__who strong{display:block;font-size:14px;color:var(--ink);}
.quote-card__who span{display:block;font-size:12.5px;color:var(--muted);}
/* ============ 最新信息 ============ */
.news-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap);
}
.news-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  display:flex;
  flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand-100);}
.news-thumb{
  display:block;
  aspect-ratio:4 / 3;
  overflow:hidden;
  background:var(--brand-50);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-body h3{
  font-size:17px;
  line-height:1.5;
  margin:10px 0 8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-body h3 a{color:var(--ink);}
.news-body h3 a:hover{color:var(--brand-600);}
.news-body p{
  font-size:13.5px;
  line-height:1.7;
  color:var(--muted);
  margin:0 0 16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-body .text-link{margin-top:auto;}
.news-empty{
  grid-column:1 / -1;
  background:#FBFCFE;
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  padding:48px 28px;
  text-align:center;
  color:var(--muted);
}
.news-empty i{font-size:26px;color:#C6D2DE;display:block;margin-bottom:12px;}
.news-empty p{font-size:14.5px;margin:0 auto 18px;max-width:420px;color:var(--muted);}
/* ============ 价格 ============ */
.pricing-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap);
  align-items:stretch;
}
.price-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 28px;
  box-shadow:var(--shadow-sm);
  display:flex;
  flex-direction:column;
  position:relative;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.price-card--featured{
  border:2px solid var(--brand-600);
  box-shadow:var(--shadow-lg);
  padding-top:44px;
}
.price-flag{
  position:absolute;
  top:-1px;
  left:24px;
  transform:translateY(-50%);
  background:var(--brand-600);
  color:#fff;
  font-size:12px;
  font-weight:600;
  padding:5px 14px;
  border-radius:999px;
  box-shadow:0 6px 16px rgba(18,98,156,.24);
}
.price-card h3{font-size:19px;margin-bottom:6px;}
.price-card .price-sub{font-size:13px;color:var(--muted);line-height:1.6;margin-bottom:18px;}
.price-amount{
  display:flex;
  align-items:baseline;
  gap:6px;
  margin-bottom:20px;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
}
.price-amount .cur{font-size:17px;font-weight:600;color:var(--text);}
.price-amount .num{font-size:38px;font-weight:700;line-height:1;}
.price-amount .per{font-size:13px;color:var(--muted);}
.price-list{display:grid;gap:11px;margin:0 0 26px;flex:1 1 auto;}
.price-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--text);}
.price-list li i{color:var(--green);font-size:12.5px;margin-top:6px;flex:0 0 auto;}
.price-card .btn{width:100%;}
.price-note{font-size:13px;color:var(--muted);line-height:1.7;margin-top:22px;text-align:center;}
/* ============ FAQ ============ */
.faq-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  position:relative;
  transition:box-shadow .2s ease-out,border-color .2s ease-out;
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--brand-600);
  opacity:0;
  transition:opacity .2s ease-out;
}
.faq-item.is-open{border-color:var(--brand-100);box-shadow:var(--shadow-md);}
.faq-item.is-open::before{opacity:1;}
.faq-q{
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:18px 20px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  line-height:1.5;
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--brand-600);}
.faq-q .faq-sign{
  flex:0 0 auto;
  width:22px;
  height:22px;
  border-radius:50%;
  background:var(--brand-50);
  color:var(--brand-600);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:11px;
  margin-top:2px;
  transition:background-color .18s ease-out,color .18s ease-out,transform .2s ease-out;
}
.faq-item.is-open .faq-sign{background:var(--brand-600);color:#fff;transform:rotate(180deg);}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .22s ease-out;
}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a__inner{overflow:hidden;}
.faq-a p{
  padding:0 20px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--text);
  margin:0;
  max-width:none;
}
/* ============ 联系 CTA ============ */
.cta-banner{
  background:var(--brand-50);
  border-top:1px solid var(--brand-100);
  border-bottom:1px solid var(--brand-100);
}
.cta-grid{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  gap:48px;
  align-items:center;
}
.cta-copy h2{font-size:30px;line-height:1.3;margin-bottom:12px;color:var(--ink);}
.cta-copy p{font-size:15px;line-height:1.85;color:var(--text);max-width:520px;}
.cta-contact{
  display:grid;
  gap:12px;
  margin-top:22px;
}
.cta-contact span{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--text);
}
.cta-contact i{color:var(--brand-600);width:18px;text-align:center;}
.contact-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-md);
}
.contact-card h3{font-size:18px;margin-bottom:6px;}
.contact-card .form-hint{font-size:13px;color:var(--muted);margin-bottom:18px;line-height:1.6;}
.form-row{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
  margin-bottom:14px;
}
.field{display:flex;flex-direction:column;gap:6px;}
.field label{font-size:13px;font-weight:600;color:var(--ink);}
.field input,.field textarea{
  width:100%;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  padding:11px 14px;
  font-size:14px;
  color:var(--ink);
  line-height:1.6;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field input::placeholder,.field textarea::placeholder{color:#AEBBB7;color:#AAB6C2;}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brand-600);
  box-shadow:0 0 0 3px var(--brand-50);
}
.field.is-error input,.field.is-error textarea{border-color:#D64B4B;}
.field .err{font-size:13px;color:#D64B4B;display:none;}
.field.is-error .err{display:block;}
.contact-card .btn{width:100%;margin-top:6px;}
.form-msg{
  margin-top:14px;
  font-size:13.5px;
  line-height:1.7;
  color:var(--green);
  display:none;
}
.form-msg.is-show{display:block;}
/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:#C6D6E3;
  padding-top:0;
}
.footer-cta{
  background:var(--brand-50);
  border-top:1px solid var(--brand-100);
}
.footer-cta__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:48px;
  padding-top:24px;
  padding-bottom:24px;
  flex-wrap:wrap;
}
.footer-cta__inner strong{font-size:17px;color:var(--brand-700);font-weight:700;}
.footer-cta__inner span{font-size:13.5px;color:var(--text);display:block;margin-top:4px;}
.footer-main{
  padding:64px 0 40px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--brand-600);}
.footer-brand strong{font-size:15.5px;color:#fff;}
.footer-brand em{display:block;font-style:normal;font-size:11.5px;color:#7E93A5;}
.footer-about{font-size:13.5px;line-height:1.85;color:#9FB3C4;max-width:320px;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:13.5px;color:#9FB3C4;transition:color .18s ease-out;}
.footer-col a:hover{color:#fff;}
.footer-col li{font-size:13.5px;line-height:1.7;color:#9FB3C4;}
.footer-col li i{width:16px;color:var(--brand-100);margin-right:8px;font-size:12px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.70);margin:0;max-width:none;}
.footer-bottom a{color:rgba(255,255,255,.70);}
.footer-bottom a:hover{color:#fff;}
/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:150;
  display:inline-flex;
  align-items:center;
  gap:12px;
  background:var(--accent);
  color:#fff;
  border-radius:999px;
  padding:12px 22px;
  box-shadow:var(--shadow-lg);
  font-size:14px;
  font-weight:600;
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .25s ease-out,transform .25s ease-out,visibility .25s ease-out,background-color .18s ease-out;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--accent-700);color:#fff;transform:translateY(-2px);}
.float-cta i{font-size:13px;}
.float-cta .fc-text{font-size:13px;font-weight:500;color:rgba(255,255,255,.92);}
.float-cta .fc-go{
  background:rgba(255,255,255,.18);
  border-radius:999px;
  padding:4px 12px;
  font-size:13px;
  font-weight:600;
}
/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  :root{--section:72px;}
  .nav-cards{
    justify-content:flex-start;
    overflow-x:auto;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
    padding-bottom:2px;
  }
  .nav-cards::-webkit-scrollbar{display:none;}
  .nav-card{flex:0 0 auto;}
  .hero{padding:48px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:34px;}
  .hero-visual{max-width:640px;}
  .hero-float-card{left:auto;right:12px;bottom:-20px;width:220px;}
  .feature-main{grid-column:span 12;}
  .feature-side{grid-column:span 12;grid-template-rows:none;grid-template-columns:repeat(3,minmax(0,1fr));}
  .feature-mini{flex-direction:column;gap:12px;}
  .demo-row{gap:32px;padding:32px 0;}
  .demo-media,.demo-copy{grid-column:span 12;}
  .demo-row--reverse .demo-media{order:0;}
  .demo-row--reverse .demo-copy{order:1;}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .pricing-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
  .price-card{padding:26px 20px;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media screen and (max-width:880px){
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-cards{
    display:none;
    order:3;
    flex-basis:100%;
    width:100%;
    justify-content:flex-start;
    padding-top:14px;
    border-top:1px solid var(--line);
    margin-top:14px;
  }
  .site-header.is-open .nav-cards{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:10px;
    overflow:visible;
  }
  .site-header.is-open .nav-card{
    justify-content:flex-start;
    padding:12px 14px;
    font-size:14px;
    background:#F7F9FC;
  }
  .nav-shell{flex-wrap:wrap;gap:12px;}
  .brand{margin-right:auto;}
  .hero-metrics{grid-template-columns:repeat(3,minmax(0,1fr));}
  .proof-band{grid-template-columns:repeat(2,minmax(0,1fr));}
  .proof-band__item:nth-child(2n){border-right:0;}
  .proof-band__item:nth-child(-n+2){border-bottom:1px solid var(--brand-100);}
  .logo-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .quote-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
}
@media screen and (max-width:640px){
  :root{--section:56px;}
  .container{padding-left:16px;padding-right:16px;}
  .nav-shell{padding:10px 12px;margin-top:10px;margin-bottom:10px;}
  .brand-text strong{font-size:14px;}
  .brand-text em{display:none;}
  .brand-mark{width:34px;height:34px;font-size:15px;border-radius:10px;}
  .hero{padding:40px 0 56px;}
  .hero h1{font-size:27px;line-height:1.32;}
  .hero-sub{font-size:14.5px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .hero-metrics{grid-template-columns:1fr 1fr;gap:10px;}
  .hero-metrics .metric-mini:last-child{grid-column:1 / -1;}
  .hero-float-card{position:static;width:100%;margin-top:14px;left:auto;right:auto;bottom:auto;}
  .section-title{font-size:23px;}
  .section-head{margin-bottom:26px;}
  .feature-side{grid-template-columns:1fr;}
  .feature-main__body{padding:22px;}
  .news-grid{grid-template-columns:1fr;}
  .pricing-grid{grid-template-columns:1fr;}
  .price-card--featured{padding-top:40px;}
  .price-amount .num{font-size:34px;}
  .form-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-cta__inner{flex-direction:column;align-items:flex-start;gap:14px;}
  .footer-cta__inner .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .float-cta{
    left:0;
    right:0;
    bottom:0;
    border-radius:0;
    padding:10px 16px;
    justify-content:space-between;
    width:100%;
    transform:translateY(100%);
    padding-bottom:calc(10px + env(safe-area-inset-bottom));
  }
  .float-cta.is-visible{transform:translateY(0);}
  .float-cta .fc-text{font-size:12.5px;}
  .site-footer{padding-bottom:64px;}
  .demo-copy h3{font-size:19px;}
  .proof-band__item{padding:20px 16px;}
  .proof-band__item strong{font-size:24px;}
}

/* roulang page: article */
:root{
  --brand-600:#12629C;
  --brand-700:#0C4A76;
  --brand-50:#EFF6FB;
  --brand-100:#D9EAF5;
  --accent:#F07C2A;
  --accent-dark:#D9691A;
  --data-green:#1F9D74;
  --title:#12212E;
  --text:#4A5A68;
  --muted:#8794A1;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --line:#E4EAF1;
  --danger:#D64B4B;
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-sm:0 2px 8px rgba(18,34,46,.06);
  --sh-md:0 8px 24px rgba(18,34,46,.08);
  --sh-lg:0 18px 40px rgba(18,34,46,.10);
  --space-section:96px;
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,ul,ol{margin:0;padding:0;}
ul,ol{list-style-position:outside;}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand-600);
  outline-offset:2px;
  border-radius:6px;
}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
[id]{scroll-margin-top:88px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 28px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  border:1px solid transparent;
  cursor:pointer;
  text-decoration:none;
  transition:background var(--ease),color var(--ease),box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 12px rgba(240,124,42,.22);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(240,124,42,.28);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-600);font-weight:600;font-size:15px;
  padding:4px 0;background:none;border:none;
}
.btn-text i{transition:transform var(--ease);font-size:12px;}
.btn-text:hover{color:var(--brand-700);}
.btn-text:hover i{transform:translateX(2px);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  padding:12px 0;
  background:var(--bg);
  transition:padding var(--ease),box-shadow var(--ease),background var(--ease);
}
.site-header.is-stuck{
  padding:6px 0;
  background:rgba(247,249,252,.96);
  box-shadow:0 4px 16px rgba(18,34,46,.06);
}
.nav-shell{
  display:flex;align-items:center;gap:18px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  padding:12px 16px;
  transition:padding var(--ease);
}
.site-header.is-stuck .nav-shell{padding:8px 16px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:var(--brand-600);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;letter-spacing:0;
  box-shadow:0 4px 12px rgba(18,98,156,.24);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--title);}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:0;}
.nav-cards{display:flex;align-items:center;gap:8px;flex:1;justify-content:center;}
.nav-card{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 15px;border-radius:var(--r-btn);
  font-size:14px;font-weight:500;color:var(--text);
  border:1px solid transparent;white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.nav-card i{font-size:13px;color:var(--brand-600);}
.nav-card:hover{background:var(--brand-50);color:var(--brand-700);}
.nav-card.is-active{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-700);font-weight:600;}
.nav-cta{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-cta .btn{padding:10px 22px;font-size:14px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:10px;
  background:var(--brand-50);border:1px solid var(--line);
  color:var(--brand-600);font-size:16px;
  align-items:center;justify-content:center;cursor:pointer;
  transition:background var(--ease);
  margin-left:auto;
}
.nav-toggle:hover{background:var(--brand-100);}

/* ============ 文章区 ============ */
.article-wrap{padding:36px 0 var(--space-section);}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .sep{color:#C3CDD8;font-size:11px;}
.breadcrumb .current{color:var(--brand-600);font-weight:600;}
.article-head{max-width:860px;margin:0 auto;}
.article-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:16px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--brand-50);color:var(--brand-600);
  border:1px solid var(--brand-100);
}
.badge-accent{background:#FEF1E7;color:var(--accent-dark);border-color:#FBDCC6;}
.badge-green{background:#E9F7F2;color:var(--data-green);border-color:#CDEDE1;}
.article-title{
  font-size:36px;line-height:1.32;font-weight:700;color:var(--title);
  margin-bottom:18px;letter-spacing:0;word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.article-meta .meta-divider{width:1px;height:12px;background:var(--line);display:inline-block;}
.article-meta i{font-size:12px;color:var(--brand-600);margin-right:4px;}
.article-line{height:1px;background:var(--line);margin-top:26px;}

.article-body{
  max-width:760px;margin:0 auto;padding-top:34px;
  font-size:16px;line-height:1.9;color:var(--text);
  overflow-wrap:break-word;word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:28px;line-height:1.35;font-weight:700;color:var(--title);
  margin:40px 0 14px;
}
.article-body h3{
  font-size:22px;line-height:1.45;font-weight:600;color:var(--title);
  margin:32px 0 12px;
}
.article-body h4{
  font-size:18px;line-height:1.5;font-weight:600;color:var(--title);
  margin:26px 0 10px;
}
.article-body p{margin:0 0 18px;font-size:16px;line-height:1.9;text-align:left;}
.article-body strong{color:var(--title);font-weight:600;}
.article-body a{color:var(--brand-600);border-bottom:1px solid var(--brand-100);}
.article-body a:hover{color:var(--brand-700);border-bottom-color:var(--brand-600);}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:8px;line-height:1.9;}
.article-body li::marker{color:var(--brand-600);font-weight:600;}
.article-body blockquote{
  margin:26px 0;padding:20px 22px;
  background:var(--brand-50);
  border-left:3px solid var(--brand-600);
  border-radius:0 12px 12px 0;
  color:var(--title);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;
  font-size:15px;border:1px solid var(--line);
  border-radius:12px;overflow:hidden;
}
.article-body th{
  background:var(--brand-50);color:var(--title);
  font-weight:600;text-align:left;
  padding:12px 14px;border-bottom:1px solid var(--line);
}
.article-body td{
  padding:12px 14px;border-bottom:1px solid var(--line);
  color:var(--text);vertical-align:top;
}
.article-body tr:last-child td{border-bottom:none;}
.article-body img{border-radius:12px;margin:10px 0;height:auto;max-width:100%;}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  font-size:13px;color:var(--muted);text-align:center;margin-top:10px;line-height:1.6;
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}

/* 空态 */
.article-empty{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  padding:56px 28px;
  text-align:center;
}
.article-empty i{
  font-size:30px;color:var(--brand-600);
  background:var(--brand-50);
  width:64px;height:64px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  margin-bottom:18px;
}
.article-empty h2{font-size:22px;color:var(--title);margin-bottom:10px;font-weight:700;}
.article-empty p{font-size:15px;color:var(--muted);margin:0 auto 22px;max-width:460px;}
.article-empty .btn{margin:0 auto;}

/* 相关推荐 */
.related{max-width:860px;margin:64px auto 0;}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px;flex-wrap:wrap;}
.related-head h2{font-size:24px;color:var(--title);font-weight:700;line-height:1.4;}
.related-head span{font-size:14px;color:var(--muted);}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.related-card{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px;
  color:var(--text);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.related-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-md);
  border-color:var(--brand-100);
  color:var(--text);
}
.related-thumb{
  flex:0 0 88px;width:88px;aspect-ratio:4/3;
  border-radius:10px;overflow:hidden;background:var(--brand-50);
  border:1px solid var(--line);
}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-info{min-width:0;}
.related-info h3{
  font-size:15px;line-height:1.5;font-weight:600;color:var(--title);
  margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-meta{font-size:12px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
.related-meta .dot{width:3px;height:3px;border-radius:50%;background:#C3CDD8;display:inline-block;}

/* 底部操作 */
.article-actions{
  max-width:860px;margin:36px auto 0;
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  padding-top:28px;border-top:1px solid var(--line);
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:110;
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-pill);
  background:var(--accent);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--sh-lg);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity var(--ease),transform var(--ease),background var(--ease);
}
.float-cta i{font-size:13px;}
.float-cta:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}

/* ============ 页脚 ============ */
.site-footer{background:#0E2233;color:#fff;margin-top:0;}
.footer-cta{background:var(--brand-100);padding:18px 0;}
.footer-cta__inner{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;}
.footer-cta__inner strong{display:block;font-size:16px;color:var(--brand-700);font-weight:700;line-height:1.5;}
.footer-cta__inner span{display:block;font-size:14px;color:#3C5D74;line-height:1.6;}
.footer-main{padding:56px 0 36px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand strong{display:block;font-size:16px;color:#fff;font-weight:700;line-height:1.4;}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:rgba(255,255,255,.6);line-height:1.5;}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:360px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;line-height:1.5;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{font-size:14px;color:rgba(255,255,255,.68);margin-bottom:11px;line-height:1.7;display:flex;align-items:flex-start;gap:8px;}
.footer-col li i{font-size:12px;color:var(--brand-100);margin-top:6px;flex-shrink:0;}
.footer-col a{color:rgba(255,255,255,.68);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0 22px;
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.7);
}
.footer-bottom p{margin:0;line-height:1.7;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--space-section:72px;}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .nav-cards{
    display:none;
    order:3;width:100%;
    grid-template-columns:1fr 1fr;gap:10px;
    justify-content:flex-start;
    padding-top:12px;margin-top:4px;
    border-top:1px solid var(--line);
  }
  .nav-cards.is-open{display:grid;}
  .nav-card{justify-content:flex-start;width:100%;padding:10px 12px;}
  .nav-shell{flex-wrap:wrap;gap:12px;}
  .article-title{font-size:32px;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-about{max-width:none;}
}
@media (max-width:640px){
  :root{--space-section:56px;}
  .container{padding:0 16px;}
  .site-header{padding:8px 0;}
  .nav-shell{padding:10px 12px;border-radius:14px;}
  .brand-mark{width:36px;height:36px;border-radius:10px;font-size:16px;}
  .brand-text strong{font-size:14px;}
  .brand-text em{font-size:11px;}
  .article-wrap{padding:24px 0 56px;}
  .article-title{font-size:26px;line-height:1.35;}
  .article-body{padding-top:26px;}
  .article-body h2{font-size:22px;margin-top:32px;}
  .article-body h3{font-size:18px;margin-top:26px;}
  .article-body p{font-size:15.5px;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  .article-body th,.article-body td{white-space:normal;min-width:110px;}
  .related-grid{grid-template-columns:1fr;}
  .related{margin-top:44px;}
  .related-thumb{flex:0 0 96px;width:96px;}
  .article-actions{flex-direction:column;align-items:stretch;}
  .article-actions .btn{width:100%;}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;
    justify-content:space-between;
    padding:12px 16px calc(12px + env(safe-area-inset-bottom));
    transform:translateY(100%);
    box-shadow:0 -6px 20px rgba(18,34,46,.16);
    background:var(--accent);
  }
  .float-cta.is-visible{transform:translateY(0);}
  .float-cta .float-cta__hint{font-size:13px;font-weight:500;color:#fff;opacity:.95;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-main{padding:40px 0 26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;padding-bottom:84px;}
  .footer-cta__inner{flex-direction:column;align-items:flex-start;}
  .footer-cta__inner .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --brand-600:#12629C;
  --brand-700:#0C4A76;
  --brand-50:#EFF6FB;
  --brand-100:#D9EAF5;
  --accent:#F07C2A;
  --accent-700:#D96514;
  --green:#1F9D74;
  --ink:#12212E;
  --text:#4A5A68;
  --muted:#8794A1;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --line:#E4EAF1;
  --deep:#0E2233;
  --deep-2:#12293D;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-sm:0 2px 8px rgba(18,34,46,.06);
  --shadow-md:0 8px 24px rgba(18,34,46,.08);
  --shadow-lg:0 18px 40px rgba(18,34,46,.10);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,h5,h6,p,figure,ul,ol,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--brand-700)}
button{font-family:inherit;font-size:inherit;line-height:inherit;cursor:pointer;border:0;background:none;color:inherit;padding:0}
input,textarea,select{font-family:inherit;font-size:16px}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--last{padding-bottom:72px}
[id]{scroll-margin-top:88px}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  padding:14px 0;
  background:var(--bg);
  transition:padding .2s ease-out,box-shadow .2s ease-out;
}
.site-header.is-stuck{padding:8px 0;box-shadow:var(--shadow-sm)}
.nav-shell{
  position:relative;
  display:flex;align-items:center;gap:14px;
  padding:10px 14px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:40px;height:40px;flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:12px;
  font-size:19px;font-weight:700;color:#fff;
  background:linear-gradient(140deg,#1B79BC,#0C4A76);
  box-shadow:0 4px 12px rgba(18,98,156,.26);
}
.brand-text{display:flex;flex-direction:column;line-height:1.3}
.brand-text strong{font-size:15px;font-weight:700;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted)}
.nav-cards{display:flex;align-items:center;gap:8px;flex:1 1 auto;justify-content:center;min-width:0}
.nav-card{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 14px;border-radius:11px;
  font-size:14px;font-weight:600;color:var(--text);
  background:var(--bg);border:1px solid transparent;white-space:nowrap;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.nav-card i{font-size:13px;color:var(--brand-600);transition:color .18s ease-out}
.nav-card:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-100)}
.nav-card.is-active{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-600)}
.nav-cta{flex:0 0 auto;display:flex;align-items:center;gap:8px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;flex:0 0 auto;
  align-items:center;justify-content:center;
  background:var(--brand-50);color:var(--brand-600);font-size:17px;
  transition:background .18s ease-out;
}
.nav-toggle:hover{background:var(--brand-100)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;white-space:nowrap;
  border:1px solid transparent;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 12px rgba(240,124,42,.24)}
.btn-primary:hover{background:var(--accent-700);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(240,124,42,.32)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 2px 8px rgba(240,124,42,.28)}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-700)}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:15px;padding:0}
.btn-text i{font-size:12px;transition:transform .18s ease-out}
.btn-text:hover{color:var(--brand-700)}
.btn-text:hover i{transform:translateX(3px)}

/* ---------- Breadcrumb ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:22px 0 16px;font-size:13px;color:var(--muted)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand-600)}
.crumb .sep{color:#C7D2DC}
.crumb .current{color:var(--brand-600);font-weight:600}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  border-radius:20px;
  background:var(--deep);
  box-shadow:var(--shadow-md);
}
.page-hero__media{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
  opacity:.24;
}
.page-hero__inner{
  position:relative;
  display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;
  padding:56px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;
  background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.2);
  margin-bottom:18px;
}
.eyebrow i{color:var(--accent);font-size:11px}
.page-hero h1{
  font-size:clamp(28px,3.2vw,42px);
  line-height:1.25;font-weight:700;color:#fff;
  margin-bottom:16px;
}
.page-hero .hero-sub{
  font-size:16px;line-height:1.85;
  color:rgba(255,255,255,.78);
  max-width:600px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.page-hero .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.page-hero .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-stat{
  flex:1 1 120px;min-width:112px;
  padding:14px 16px;border-radius:14px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
}
.hero-stat strong{
  display:block;font-size:22px;font-weight:700;color:#fff;line-height:1.2;
  font-variant-numeric:tabular-nums;margin-bottom:2px;
}
.hero-stat span{font-size:12px;color:rgba(255,255,255,.66);line-height:1.5;display:block}
.hero-figure{
  position:relative;border-radius:18px;overflow:hidden;
  aspect-ratio:16/10;background:var(--deep-2);
  box-shadow:var(--shadow-lg);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-float{
  position:absolute;left:14px;right:14px;bottom:14px;
  display:flex;align-items:center;gap:12px;
  padding:12px 14px;border-radius:14px;
  background:rgba(255,255,255,.96);
  box-shadow:var(--shadow-md);
}
.hero-float .dot{
  width:10px;height:10px;border-radius:50%;flex:0 0 auto;
  background:var(--green);
  box-shadow:0 0 0 4px rgba(31,157,116,.16);
}
.hero-float strong{display:block;font-size:14px;color:var(--ink);line-height:1.4}
.hero-float span{font-size:12px;color:var(--muted);line-height:1.4;display:block}

/* ---------- Category strip ---------- */
.cat-strip{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:24px;padding:14px 16px;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-sm);
}
.cat-strip__label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--muted);
  padding-right:12px;margin-right:2px;border-right:1px solid var(--line);
}
.cat-strip__label i{color:var(--brand-600);font-size:12px}
.cat-strip .nav-card{padding:8px 14px;font-size:13.5px}

/* ---------- Feature rows ---------- */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.feature-row + .feature-row{margin-top:84px}
.feature-row--flip .feature-media{order:2}
.feature-row--flip .feature-body{order:1}
.feature-media{
  position:relative;overflow:hidden;
  border-radius:var(--r-card);
  aspect-ratio:4/3;
  background:var(--brand-50);
  border:1px solid var(--line);
  box-shadow:var(--shadow-md);
}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.feature-media:hover img{transform:scale(1.03)}
.feature-media__tag{
  position:absolute;left:14px;top:14px;
  padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:600;
  background:rgba(255,255,255,.94);color:var(--brand-600);
  box-shadow:var(--shadow-sm);
}
.feature-body h2{
  font-size:clamp(24px,2.4vw,30px);
  line-height:1.32;font-weight:700;color:var(--ink);
  margin-bottom:14px;
}
.feature-body p{font-size:16px;line-height:1.85;color:var(--text);max-width:620px}
.feature-body .btn-text{margin-top:20px}
.point-list{margin-top:20px;display:grid;gap:12px;max-width:620px}
.point-list li{display:flex;gap:10px;font-size:15px;line-height:1.75;color:var(--text)}
.point-list li i{color:var(--green);font-size:13px;margin-top:7px;flex:0 0 auto}

/* ---------- FAQ ---------- */
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{
  font-size:clamp(24px,2.6vw,31px);
  line-height:1.3;font-weight:700;color:var(--ink);
  margin-bottom:12px;
}
.section-head p{font-size:16px;line-height:1.85;color:var(--text)}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.faq-item{
  position:relative;overflow:hidden;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:12px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--brand-600);opacity:0;transition:opacity .2s ease-out;
}
.faq-item.is-open{border-color:var(--brand-100);box-shadow:var(--shadow-sm)}
.faq-item.is-open::before{opacity:1}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;
  font-size:16px;font-weight:600;line-height:1.5;color:var(--ink);
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--brand-600)}
.faq-q i{font-size:13px;color:var(--brand-600);transition:transform .2s ease-out;flex:0 0 auto}
.faq-item.is-open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease-out}
.faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--text)}

/* ---------- CTA banner ---------- */
.cta-banner{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:48px;border-radius:20px;
  background:linear-gradient(135deg,#12629C 0%,#0C4A76 100%);
  box-shadow:var(--shadow-md);
}
.cta-banner::after{
  content:"";position:absolute;right:-60px;top:-70px;
  width:240px;height:240px;border-radius:50%;
  background:rgba(255,255,255,.06);
}
.cta-banner__text{position:relative;z-index:1}
.cta-banner h2{font-size:clamp(22px,2.4vw,28px);line-height:1.35;font-weight:700;color:#fff;margin-bottom:10px}
.cta-banner p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.78);max-width:620px}
.cta-banner .btn{position:relative;z-index:1;flex:0 0 auto}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:#fff}
.footer-cta{background:var(--brand-50);border-top:1px solid var(--line)}
.footer-cta__inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px 0;min-height:48px;flex-wrap:wrap;
}
.footer-cta strong{display:block;font-size:16px;color:var(--ink);line-height:1.4}
.footer-cta span{font-size:13px;color:var(--text);line-height:1.6}
.footer-main{padding:56px 0 40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand strong{display:block;font-size:15px;color:#fff;line-height:1.4}
.footer-brand em{font-style:normal;font-size:11.5px;color:rgba(255,255,255,.55);display:block}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:430px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:14px;line-height:1.7;color:rgba(255,255,255,.66)}
.footer-col a{color:rgba(255,255,255,.66)}
.footer-col a:hover{color:#fff}
.footer-col i{width:16px;font-size:12px;color:var(--accent);margin-right:6px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:18px 0 28px;border-top:1px solid rgba(255,255,255,.1);
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.5);line-height:1.7}

/* ---------- Floating CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:120;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 22px;border-radius:999px;
  background:var(--accent);color:#fff;
  font-size:15px;font-weight:600;
  box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .22s ease-out,transform .22s ease-out,visibility .22s ease-out,background .18s ease-out;
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:var(--accent-700);color:#fff;transform:translateY(-2px)}
.float-cta i{font-size:13px}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .section{padding:72px 0}
  .page-hero__inner{grid-template-columns:1fr;gap:32px;padding:40px}
  .hero-figure{aspect-ratio:16/9}
  .feature-row{grid-template-columns:1fr;gap:28px}
  .feature-row + .feature-row{margin-top:64px}
  .feature-row--flip .feature-media{order:0}
  .feature-row--flip .feature-body{order:1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:36px}
  .nav-cards{justify-content:flex-start;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
  .nav-cards::-webkit-scrollbar{display:none}
}
@media (max-width:860px){
  .nav-cta{display:none}
}
@media (max-width:760px){
  .nav-toggle{display:inline-flex}
  .nav-cards{display:none}
  .nav-cards.is-open{
    display:grid;grid-template-columns:1fr 1fr;gap:8px;overflow:visible;
    position:absolute;left:0;right:0;top:calc(100% + 8px);
    padding:10px;background:#fff;border:1px solid var(--line);
    border-radius:16px;box-shadow:var(--shadow-md);z-index:60;
  }
  .brand-text em{display:none}
  .faq-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .page-hero{border-radius:16px}
  .page-hero__inner{padding:28px 22px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-stat{flex:1 1 100%}
  .cta-banner{padding:28px 22px}
  .cta-banner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-main{padding:40px 0 28px}
  .footer-bottom{padding:16px 0 84px;flex-direction:column;gap:6px}
  .float-cta{
    left:0;right:0;bottom:0;
    justify-content:center;border-radius:0;
    padding:14px 16px calc(14px + env(safe-area-inset-bottom));
    transform:translateY(100%);
  }
  .float-cta.is-show{transform:translateY(0)}
  .float-cta:hover{transform:translateY(0)}
  .cat-strip{padding:12px}
  .cat-strip__label{width:100%;border-right:0;padding-right:0;margin-right:0}
}

/* roulang page: category2 */
:root{
  --brand-600:#12629C;
  --brand-700:#0C4A76;
  --brand-50:#EFF6FB;
  --brand-100:#D9EAF5;
  --accent:#F07C2A;
  --accent-700:#D9691A;
  --green:#1F9D74;
  --ink:#12212E;
  --body:#4A5A68;
  --muted:#8794A1;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --line:#E4EAF1;
  --deep:#0E2233;
  --danger:#D64B4B;
  --r-card:16px;
  --r-btn:10px;
  --shadow-sm:0 2px 8px rgba(18,34,46,.06);
  --shadow-md:0 8px 24px rgba(18,34,46,.08);
  --shadow-lg:0 18px 40px rgba(18,34,46,.10);
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;line-height:1.3;}
h1{font-size:clamp(28px,3.6vw,44px);line-height:1.25;}
h2{font-size:clamp(24px,2.6vw,32px);}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0 0 12px;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-600);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;color:#fff;}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 2px 8px rgba(240,124,42,.24);}
.btn-primary:hover{background:var(--accent-700);color:#fff;transform:translateY(-1px);box-shadow:0 8px 24px rgba(240,124,42,.28);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-secondary{background:#fff;color:var(--brand-600);border-color:var(--brand-600);}
.btn-secondary:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);}
.btn-secondary:active{transform:translateY(1px);}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.5);}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-lg{padding:16px 36px;font-size:16px;}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;background:none;border:0;padding:0;cursor:pointer;}
.btn-text i{transition:transform .18s ease-out;}
.btn-text:hover{color:var(--brand-700);}
.btn-text:hover i{transform:translateX(2px);}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-600);line-height:1.6;
}
.badge--onDark{background:rgba(255,255,255,.14);color:#E9F3FA;border:1px solid rgba(255,255,255,.22);}
.badge--green{background:rgba(31,157,116,.12);color:var(--green);}

/* ============ 顶部卡片化导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--bg);
  padding:14px 0;
  transition:padding .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{padding:8px 0;border-bottom-color:var(--line);box-shadow:0 8px 24px rgba(18,34,46,.07);}
.nav-shell{
  position:relative;
  display:flex;align-items:center;gap:16px;
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:10px 14px;box-shadow:var(--shadow-sm);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:10px;background:var(--brand-600);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;flex:0 0 auto;
}
.brand-text strong{display:block;font-size:15px;color:var(--ink);line-height:1.3;font-weight:700;}
.brand-text em{display:block;font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.02em;}
.nav-cards{display:flex;align-items:center;gap:8px;margin-left:6px;flex:1 1 auto;}
.nav-card{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:10px;border:1px solid transparent;
  font-size:14px;font-weight:500;color:var(--body);background:transparent;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
  white-space:nowrap;
}
.nav-card i{font-size:13px;color:var(--brand-600);}
.nav-card:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);}
.nav-card:active{transform:translateY(0);}
.nav-card.is-active{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-700);font-weight:600;}
.nav-cta{margin-left:auto;flex:0 0 auto;}
.nav-cta .btn{padding:10px 22px;font-size:14px;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--brand-600);font-size:16px;cursor:pointer;
  margin-left:auto;transition:background .18s ease-out,border-color .18s ease-out;
}
.nav-toggle:hover{background:var(--brand-50);border-color:var(--brand-100);}

/* ============ 面包屑 ============ */
.crumb-bar{padding:22px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:#C3CEDA;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand-600);}
.crumb li[aria-current]{color:var(--brand-600);font-weight:600;}

/* ============ Hero 大图 ============ */
.hero-band{position:relative;overflow:hidden;background:var(--deep);color:#fff;margin-top:18px;border-radius:20px;box-shadow:var(--shadow-md);}
.hero-band .container{max-width:1200px;}
.hero-media{position:absolute;inset:0;}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.92;}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(10,26,40,.97) 0%,rgba(10,26,40,.88) 46%,rgba(18,98,156,.58) 100%);
}
.hero-inner{position:relative;z-index:2;padding-top:72px;padding-bottom:72px;}
.hero-band h1{color:#fff;max-width:820px;margin-top:16px;}
.hero-lead{color:#C8D8E4;font-size:16px;line-height:1.85;max-width:680px;margin:18px 0 26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px;}
.hero-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;max-width:860px;}
.metric{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  border-radius:14px;padding:14px 16px;
}
.metric b{display:block;font-size:22px;color:#fff;line-height:1.4;font-variant-numeric:tabular-nums;}
.metric span{font-size:12px;color:#A9BDCC;line-height:1.6;}

/* ============ 板块基础 ============ */
.section{padding:var(--section-y) 0;}
.section--tight{padding-top:48px;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{margin-bottom:12px;}
.section-head p{font-size:16px;line-height:1.85;color:var(--body);margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand-600);margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);border-radius:2px;}

/* ============ 分区卡条 ============ */
.zone-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.zone-card{
  display:flex;align-items:center;gap:14px;
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out,background .18s ease-out;
}
.zone-card i{
  width:38px;height:38px;flex:0 0 auto;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-50);color:var(--brand-600);font-size:15px;
}
.zone-card strong{display:block;font-size:15px;color:var(--ink);line-height:1.4;}
.zone-card small{display:block;font-size:12px;color:var(--muted);line-height:1.5;}
.zone-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);color:inherit;}
.zone-card.is-active{border-color:var(--brand-600);background:var(--brand-50);}
.zone-card.is-active i{background:#fff;}

/* ============ 模块卡片网格 ============ */
.module-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.m-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.m-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand-100);}
.m-card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--brand-50);}
.m-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.m-card:hover .m-card__media img{transform:scale(1.03);}
.m-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.m-card h3{font-size:19px;}
.m-card p{font-size:14px;line-height:1.75;color:var(--body);margin:0;}
.m-card__meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:12px;color:var(--muted);
}
.dot{width:4px;height:4px;border-radius:50%;background:#C3CEDA;display:inline-block;}

/* ============ 对比条 ============ */
.compare{
  background:var(--deep);border-radius:20px;padding:40px 36px;color:#fff;
  box-shadow:var(--shadow-md);
}
.compare .eyebrow{color:#8FC4E6;}
.compare h2{color:#fff;margin-bottom:12px;}
.compare-lead{color:#A9BDCC;font-size:15px;line-height:1.85;max-width:720px;margin:0 0 28px;}
.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);}
.compare-col{padding:4px 28px;}
.compare-col:first-child{padding-left:0;}
.compare-col+.compare-col{border-left:1px solid rgba(255,255,255,.14);}
.compare-col h3{color:#fff;font-size:18px;margin-bottom:10px;}
.compare-col .tag{
  display:inline-block;font-size:12px;font-weight:600;color:#FFD9BC;
  background:rgba(240,124,42,.18);border:1px solid rgba(240,124,42,.42);
  border-radius:999px;padding:3px 10px;margin-bottom:14px;
}
.compare-col li{position:relative;padding-left:16px;font-size:14px;line-height:1.95;color:#B6C8D6;}
.compare-col li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.compare-col li b{color:#fff;font-weight:600;}
.compare-foot{
  margin-top:28px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
}
.compare-foot span{font-size:13px;color:#93AABB;}

/* ============ FAQ ============ */
.faq-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;align-items:start;}
.faq-item{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:12px;overflow:hidden;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--brand-600);opacity:0;transition:opacity .18s ease-out;
}
.faq-item:hover{border-color:var(--brand-100);}
.faq-item.is-open{border-color:var(--brand-100);box-shadow:var(--shadow-sm);}
.faq-item.is-open::before{opacity:1;}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  width:100%;background:none;border:0;padding:18px 20px;
  text-align:left;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--brand-700);}
.faq-q .faq-icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-50);color:var(--brand-600);font-size:11px;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.faq-item.is-open .faq-icon{background:var(--brand-600);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease-out;}
.faq-item.is-open .faq-a{max-height:360px;}
.faq-a p{padding:0 20px 20px;margin:0;font-size:15px;line-height:1.85;color:var(--body);}

/* ============ CTA 横幅 ============ */
.cta-band{
  background:linear-gradient(120deg,var(--brand-700) 0%,var(--brand-600) 100%);
  border-radius:20px;padding:44px 40px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--shadow-md);
}
.cta-band h2{color:#fff;margin-bottom:10px;}
.cta-band p{color:#D5E7F4;font-size:15px;line-height:1.85;margin:0;max-width:620px;}
.cta-band .btn-primary{flex:0 0 auto;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 22px;border-radius:999px;
  background:var(--accent);color:#fff;font-weight:600;font-size:14px;
  box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s ease-out,background .18s ease-out;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--accent-700);color:#fff;transform:translateY(-2px);}
.float-cta:active{transform:translateY(0);}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);color:#fff;margin-top:0;}
.footer-cta{background:var(--brand-50);border-top:1px solid var(--line);padding:22px 0;}
.footer-cta__inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.footer-cta__inner strong{display:block;color:var(--brand-700);font-size:16px;font-weight:700;}
.footer-cta__inner span{display:block;color:var(--body);font-size:14px;line-height:1.7;}
.footer-main{padding:56px 0 34px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand strong{display:block;color:#fff;font-size:15px;line-height:1.3;}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:#8FA6B8;}
.footer-about{font-size:14px;line-height:1.85;color:#A9BDCC;max-width:420px;margin:0;}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;}
.footer-col li{font-size:13px;color:#A9BDCC;padding:5px 0;line-height:1.7;}
.footer-col a{color:#A9BDCC;}
.footer-col a:hover{color:#fff;}
.footer-col i{color:#6E8AA0;margin-right:6px;font-size:12px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0 28px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,.7);}

/* ============ 锚点偏移 ============ */
#top,#modules,#compare,#faq,#start{scroll-margin-top:88px;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--section-y:72px;}
  .module-grid{grid-template-columns:repeat(2,1fr);}
  .hero-metrics{grid-template-columns:repeat(2,1fr);}
  .compare-grid{grid-template-columns:1fr;}
  .compare-col{padding:22px 0 0;}
  .compare-col+.compare-col{border-left:0;border-top:1px solid rgba(255,255,255,.14);}
  .compare-col:first-child{padding-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .nav-card{padding:7px 11px;font-size:13px;}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-cards{
    display:none;position:absolute;left:0;right:0;top:calc(100% + 10px);
    background:#fff;border:1px solid var(--line);border-radius:14px;
    padding:12px;box-shadow:var(--shadow-lg);z-index:90;
    grid-template-columns:repeat(2,1fr);gap:8px;margin-left:0;
  }
  .nav-cards.is-open{display:grid;}
  .nav-card{justify-content:flex-start;padding:10px 12px;font-size:14px;}
  .zone-strip{grid-template-columns:1fr;}
  .faq-list{grid-template-columns:1fr;}
  .cta-band{padding:32px 26px;}
}
@media (max-width:640px){
  :root{--section-y:56px;}
  .container{padding:0 16px;}
  .hero-band{border-radius:16px;}
  .hero-inner{padding-top:44px;padding-bottom:44px;}
  .hero-metrics{grid-template-columns:1fr 1fr;gap:10px;}
  .metric b{font-size:19px;}
  .module-grid{grid-template-columns:1fr;}
  .compare{padding:28px 22px;border-radius:16px;}
  .cta-band{border-radius:16px;padding:28px 22px;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;}
  .site-footer{padding-bottom:68px;}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;
    justify-content:space-between;padding:13px 18px;font-size:14px;
  }
  .float-cta .float-cta__note{font-size:12px;color:rgba(255,255,255,.88);font-weight:500;}
  .badge{font-size:11px;}
}