/* roulang page: index */
:root{
  --ink:#123B38;
  --ink-600:#2C6A62;
  --ink-300:#A9CFC2;
  --ink-50:#E7F0EC;
  --accent:#E1662F;
  --accent-dark:#C4521F;
  --bg:#F7F8F5;
  --card:#FFFFFF;
  --soft:#EFF3F1;
  --line:#E3E7E1;
  --input-line:#D8DEDA;
  --t1:#16211F;
  --t2:#5A6663;
  --t3:#8C9793;
  --on-dark:#F2F5F3;
  --ok:#2F8F6B;
  --warn:#C9873A;
  --err:#C0492F;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --r-big:20px;
  --sh1:0 1px 2px rgba(18,33,31,.04), 0 8px 24px rgba(18,33,31,.06);
  --sh2:0 14px 36px rgba(18,33,31,.10);
  --sh-fix:0 -8px 24px rgba(18,33,31,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --gap:96px;
  --font:"Inter","Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",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:17px;
  line-height:1.9;
  color:var(--t1);
  background:var(--bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--ink-600);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--accent);}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.25;color:var(--t1);margin:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}

/* ============ header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,248,245,.92);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  backdrop-filter:saturate(160%) blur(10px);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(18,33,31,.06);
}
.hd-inner{
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
  height:72px;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
  font-weight:800;
  font-size:17px;
  letter-spacing:-.01em;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:32px;height:32px;
  border-radius:9px;
  background:var(--ink);
  display:flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.brand-mark svg{width:19px;height:19px;display:block;}
.brand-text{white-space:nowrap;}

.nav-wrap{
  flex:1 1 auto;
  position:relative;
  min-width:0;
  display:flex;
  align-items:center;
  justify-content:center;
}
.nav-wrap::before,
.nav-wrap::after{
  content:"";
  position:absolute;
  top:0;bottom:0;
  width:24px;
  pointer-events:none;
  z-index:2;
}
.nav-wrap::before{left:0;background:linear-gradient(90deg,rgba(247,248,245,1),rgba(247,248,245,0));}
.nav-wrap::after{right:0;background:linear-gradient(270deg,rgba(247,248,245,1),rgba(247,248,245,0));}
.site-header.is-scrolled .nav-wrap::before{background:linear-gradient(90deg,rgba(255,255,255,1),rgba(255,255,255,0));}
.site-header.is-scrolled .nav-wrap::after{background:linear-gradient(270deg,rgba(255,255,255,1),rgba(255,255,255,0));}

.nav-chips{
  display:flex;
  align-items:center;
  gap:6px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  padding:4px 24px;
  max-width:100%;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 16px;
  border-radius:999px;
  background:transparent;
  color:var(--t2);
  font-size:14.5px;
  font-weight:600;
  white-space:nowrap;
  transition:background var(--dur) var(--ease), color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.chip:hover{background:var(--ink-50);color:var(--ink);}
.chip.is-active{
  background:var(--ink);
  color:#fff;
  box-shadow:0 6px 16px rgba(18,59,56,.20);
}
.chip.is-active:hover{background:var(--ink);color:#fff;}

.hd-actions{
  display:flex;
  align-items:center;
  gap:18px;
  flex:0 0 auto;
}
.link-quiet{
  font-size:14.5px;
  font-weight:600;
  color:var(--t2);
  white-space:nowrap;
}
.link-quiet:hover{color:var(--ink);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  font-size:16px;
  font-weight:700;
  letter-spacing:0;
  white-space:nowrap;
  transition:background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.btn i{font-size:14px;transition:transform var(--dur) var(--ease);}
.btn:hover i{transform:translateX(4px);}
.btn-primary{
  background:var(--accent);
  color:#fff;
  box-shadow:0 8px 20px rgba(225,102,47,.22);
}
.btn-primary:hover{
  background:var(--accent-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 12px 26px rgba(196,82,31,.26);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(196,82,31,.22);}
.btn-ghost{
  background:transparent;
  border-color:rgba(242,245,243,.65);
  color:var(--on-dark);
}
.btn-ghost:hover{
  background:rgba(242,245,243,.14);
  border-color:var(--on-dark);
  color:#fff;
  transform:translateY(-1px);
}
.btn-outline{
  background:transparent;
  border-color:var(--ink);
  color:var(--ink);
}
.btn-outline:hover{
  background:var(--ink-50);
  border-color:var(--ink);
  color:var(--ink);
  transform:translateY(-1px);
}
.btn-lg{height:52px;padding:0 28px;font-size:16.5px;}
.hd-actions .btn{height:42px;padding:0 18px;font-size:15px;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:var(--r-btn);
  color:var(--ink);
  align-items:center;
  justify-content:center;
}
.nav-toggle i{font-size:17px;}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:16px 18px 22px;
}
.mobile-drawer.is-open{display:block;}
.drawer-chips{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px;
  margin-bottom:16px;
}
.drawer-chips .chip{
  height:44px;
  justify-content:center;
  background:var(--soft);
  color:var(--ink);
  font-size:14.5px;
}
.drawer-chips .chip.is-active{background:var(--ink);color:#fff;}
.drawer-cta{display:flex;flex-direction:column;gap:10px;}
.drawer-cta .btn{width:100%;}

/* ============ hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  color:var(--on-dark);
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
}
.hero-veil{
  position:absolute;
  inset:0;
  background:linear-gradient(112deg, rgba(18,59,56,.94) 0%, rgba(18,59,56,.82) 42%, rgba(18,59,56,.44) 100%);
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
  padding-top:96px;
  padding-bottom:112px;
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:32px;
  padding:0 14px;
  border-radius:999px;
  background:rgba(169,207,194,.16);
  border:1px solid rgba(169,207,194,.34);
  color:var(--ink-300);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
  margin-bottom:22px;
}
.hero h1{
  color:#fff;
  font-size:48px;
  line-height:1.22;
  margin-bottom:20px;
  animation:heroUp 620ms var(--ease) both;
}
.hero-sub{
  font-size:19px;
  line-height:1.8;
  color:rgba(242,245,243,.86);
  max-width:560px;
  margin-bottom:34px;
  animation:heroUp 620ms var(--ease) 80ms both;
}
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:40px;
  animation:heroUp 620ms var(--ease) 140ms both;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:40px;
  animation:heroUp 620ms var(--ease) 200ms both;
}
.hero-stats li{display:flex;flex-direction:column;gap:2px;}
.hero-stats strong{
  font-family:"Inter",var(--font);
  font-size:28px;
  font-weight:800;
  color:#fff;
  line-height:1.2;
  letter-spacing:-.02em;
}
.hero-stats span{font-size:13.5px;color:rgba(242,245,243,.72);line-height:1.6;}

@keyframes heroUp{
  from{opacity:0;transform:translateY(12px);}
  to{opacity:1;transform:translateY(0);}
}

.hero-panel{
  background:#fff;
  border-radius:var(--r-big);
  padding:32px;
  box-shadow:0 22px 48px rgba(6,26,24,.28);
  color:var(--t1);
  animation:heroUp 620ms var(--ease) 160ms both;
}
.panel-title{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--ink-600);
  text-transform:uppercase;
  margin-bottom:18px;
}
.panel-list li{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:14px 0;
  border-bottom:1px dashed var(--line);
}
.panel-list li:last-child{border-bottom:0;}
.panel-list span{
  font-size:14px;
  color:var(--t3);
  flex:0 0 auto;
}
.panel-list strong{
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  text-align:right;
}
.panel-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:20px;
  font-size:15px;
  font-weight:700;
  color:var(--ink);
}
.panel-link i{font-size:12px;transition:transform var(--dur) var(--ease);}
.panel-link:hover{color:var(--accent);}
.panel-link:hover i{transform:translateX(4px);}

/* ============ section base ============ */
.section{padding:var(--gap) 0;}
.section-soft{background:var(--soft);}
.section-head{max-width:720px;margin-bottom:52px;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--accent);
  margin-bottom:14px;
}
.section-head h2{font-size:32px;margin-bottom:16px;}
.section-desc{font-size:16.5px;color:var(--t2);line-height:1.9;}
.head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  max-width:none;
  margin-bottom:44px;
}
.head-row .section-head{margin-bottom:0;}

/* ============ 卖点三连 ============ */
.points-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.point-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:32px;
  box-shadow:var(--sh1);
  transition:transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.point-card:hover{transform:translateY(-6px);box-shadow:var(--sh2);}
.point-card:nth-child(1){transform:translateY(-24px);}
.point-card:nth-child(1):hover{transform:translateY(-30px);}
.point-num{
  display:block;
  font-family:"Inter",var(--font);
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--ink-300);
  margin-bottom:20px;
}
.point-icon{
  width:44px;height:44px;
  border-radius:12px;
  background:var(--ink-50);
  color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:20px;
}
.point-icon i{font-size:18px;}
.point-card h3{font-size:21px;margin-bottom:12px;}
.point-card p{font-size:15.5px;color:var(--t2);line-height:1.85;}

/* ============ zigzag ============ */
.zigzag{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  margin-bottom:88px;
}
.zigzag:last-child{margin-bottom:0;}
.zigzag.reverse .zz-media{order:2;}
.zz-media{
  overflow:hidden;
  border-radius:var(--r-big);
  box-shadow:var(--sh1);
  aspect-ratio:5/6;
  background:var(--ink-50);
}
.zz-media img{
  width:100%;height:100%;
  object-fit:cover;
  border-radius:var(--r-big);
  transition:transform 420ms var(--ease);
}
.zz-media:hover img{transform:scale(1.03);}
.zz-body h3{font-size:23px;margin-bottom:14px;}
.zz-body p{font-size:16.5px;color:var(--t2);margin-bottom:22px;}
.zz-list li{
  display:flex;
  align-items:flex-start;
  gap:12px;
  font-size:15.5px;
  color:var(--t2);
  padding:9px 0;
  line-height:1.7;
}
.zz-list i{
  color:var(--ok);
  font-size:14px;
  margin-top:6px;
  flex:0 0 auto;
}

/* ============ 最新信息 ============ */
.latest-grid{
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:28px;
  align-items:start;
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  transition:transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:#D5DCD8;}
.card-lead{overflow:hidden;display:block;}
.card-media{
  position:relative;
  display:block;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--ink-50);
}
.card-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 420ms var(--ease);
}
.card:hover .card-media img{transform:scale(1.03);}
.badge{
  position:absolute;
  top:14px;left:14px;
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(18,59,56,.82);
  color:#fff;
  font-size:12.5px;
  font-weight:600;
}
.card-lead .card-body{padding:26px 28px 28px;}
.card-lead h3{font-size:22px;margin-bottom:12px;}
.card-lead p{font-size:15.5px;color:var(--t2);line-height:1.85;margin-bottom:18px;}
.card-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13.5px;
  color:var(--t3);
}
.card-meta .arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:700;
  color:var(--ink);
  font-size:14px;
}
.card-meta .arrow i{font-size:12px;transition:transform var(--dur) var(--ease);}
.card:hover .card-meta .arrow i{transform:translateX(4px);}

.latest-side{display:flex;flex-direction:column;gap:0;}
.mini-card{
  display:flex;
  gap:18px;
  align-items:flex-start;
  padding:20px 4px;
  border-bottom:1px dashed var(--line);
  transition:transform var(--dur) var(--ease);
}
.mini-card:first-child{padding-top:6px;}
.mini-card:hover{transform:translateX(4px);}
.mini-thumb{
  width:96px;height:72px;
  border-radius:12px;
  overflow:hidden;
  flex:0 0 auto;
  background:var(--ink-50);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.mini-card:hover .mini-thumb img{transform:scale(1.05);}
.mini-body{min-width:0;}
.mini-body .mini-cat{
  font-size:12.5px;
  font-weight:700;
  color:var(--ink-600);
  display:block;
  margin-bottom:6px;
}
.mini-body h4{
  font-size:16px;
  font-weight:700;
  line-height:1.5;
  margin-bottom:6px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.mini-body h4 a{color:var(--t1);}
.mini-body h4 a:hover{color:var(--accent);}
.mini-body time{font-size:13px;color:var(--t3);}

.empty-state{
  background:var(--ink-50);
  border:1px dashed var(--ink-300);
  border-radius:var(--r-card);
  padding:48px 32px;
  text-align:center;
}
.empty-state p{font-size:16.5px;color:var(--ink);font-weight:600;margin-bottom:18px;}
.empty-links{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}

.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  white-space:nowrap;
}
.link-more i{font-size:12px;transition:transform var(--dur) var(--ease);}
.link-more:hover{color:var(--accent);}
.link-more:hover i{transform:translateX(4px);}

/* ============ 社会认同 ============ */
.proof-band{
  background:var(--ink);
  border-radius:var(--r-big);
  padding:48px 40px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
  margin-bottom:64px;
}
.proof-band li{text-align:left;}
.proof-num{
  display:block;
  font-family:"Inter",var(--font);
  font-size:38px;
  font-weight:800;
  color:#fff;
  line-height:1.15;
  letter-spacing:-.02em;
  margin-bottom:8px;
}
.proof-band span.label{font-size:14.5px;color:rgba(242,245,243,.7);line-height:1.7;}

.quote-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-bottom:64px;
}
.quote-card{
  background:var(--soft);
  border:1px solid transparent;
  border-radius:var(--r-card);
  padding:30px 28px;
  transition:background var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.quote-card:hover{
  background:#fff;
  border-color:var(--line);
  transform:translateY(-4px);
  box-shadow:var(--sh2);
}
.quote-card p{font-size:15.5px;color:var(--t1);line-height:1.9;margin-bottom:18px;}
.quote-card footer{
  font-size:13.5px;
  color:var(--t3);
  display:flex;
  align-items:center;
  gap:8px;
}
.quote-card footer i{color:var(--ink-300);font-size:12px;}

.logo-wall{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:16px;
  padding-top:36px;
  border-top:1px solid var(--line);
}
.logo-wall li{
  height:64px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  background:transparent;
  color:#A8B0AC;
  font-size:14.5px;
  font-weight:700;
  letter-spacing:.02em;
  filter:grayscale(1);
  transition:color var(--dur) var(--ease), background var(--dur) var(--ease), filter var(--dur) var(--ease);
}
.logo-wall li:hover{color:var(--ink);background:var(--card);filter:grayscale(0);box-shadow:var(--sh1);}

/* ============ FAQ ============ */
.faq-layout{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:56px;
  align-items:start;
}
.faq-side{position:sticky;top:104px;}
.faq-side h2{font-size:32px;margin-bottom:16px;}
.faq-side p{font-size:16.5px;color:var(--t2);margin-bottom:24px;}

.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  overflow:hidden;
  transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.faq-item.is-open{border-color:var(--ink-300);box-shadow:var(--sh2);}
.faq-q{margin:0;}
.faq-q button{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  text-align:left;
  background:transparent;
  border:0;
  padding:22px 26px;
  font-size:18px;
  font-weight:700;
  color:var(--t1);
  line-height:1.6;
  letter-spacing:-.01em;
}
.faq-icon{
  position:relative;
  width:20px;height:20px;
  flex:0 0 auto;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  top:50%;left:50%;
  background:var(--ink);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform 240ms var(--ease), background var(--dur) var(--ease);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);}
.faq-item.is-open .faq-icon::before{background:var(--accent);}
.faq-item.is-open .faq-icon::after{background:var(--accent);}
.faq-a{
  padding:0 26px 24px;
  font-size:16px;
  color:var(--t2);
  line-height:1.85;
}

/* ============ CTA ============ */
.cta-block{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  border-radius:var(--r-big);
  padding:56px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}
.cta-block::after{
  content:"";
  position:absolute;
  right:-60px;top:-80px;
  width:320px;height:320px;
  border-radius:50%;
  border:1px solid rgba(169,207,194,.18);
  box-shadow:0 0 0 40px rgba(169,207,194,.06) inset;
  pointer-events:none;
}
.cta-block h2{color:#fff;font-size:30px;margin-bottom:12px;}
.cta-block p{color:rgba(242,245,243,.78);font-size:16.5px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2;}

/* ============ footer ============ */
.site-footer{
  background:var(--ink);
  color:rgba(242,245,243,.72);
  padding:72px 0 0;
  margin-top:var(--gap);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:48px;
  padding-bottom:56px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-weight:800;
  font-size:17px;
  margin-bottom:18px;
}
.footer-brand .brand-mark{background:rgba(169,207,194,.16);}
.footer-about{font-size:14.5px;line-height:1.9;color:rgba(242,245,243,.68);max-width:320px;}
.footer-col h3{
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  color:#fff;
  margin-bottom:20px;
}
.footer-col li{margin-bottom:12px;}
.footer-col a{
  font-size:14.5px;
  color:rgba(242,245,243,.72);
}
.footer-col a:hover{color:var(--ink-300);}
.footer-col .plain{font-size:14.5px;color:rgba(242,245,243,.72);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:24px 0 96px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  font-size:13.5px;
  color:rgba(242,245,243,.55);
}

/* ============ 移动固定条 ============ */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:90;
  background:#fff;
  box-shadow:var(--sh-fix);
  padding:10px 18px calc(10px + env(safe-area-inset-bottom));
  align-items:center;
  justify-content:space-between;
  gap:14px;
  opacity:0;
  transform:translateY(100%);
  transition:opacity 260ms var(--ease), transform 260ms var(--ease);
}
.mobile-bar.is-visible{opacity:1;transform:translateY(0);}
.mobile-bar span{font-size:13.5px;color:var(--t2);line-height:1.5;}
.mobile-bar .btn{height:44px;padding:0 18px;font-size:15px;flex:0 0 auto;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero h1{font-size:42px;}
}
@media (max-width:1023px){
  :root{--gap:72px;}
  .container{padding:0 24px;}
  .hd-inner{padding:0 24px;height:64px;}
  .nav-wrap{display:none;}
  .link-quiet{display:none;}
  .hd-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding-top:72px;padding-bottom:80px;}
  .hero h1{font-size:36px;}
  .hero-panel{max-width:520px;}
  .points-grid{grid-template-columns:1fr;gap:20px;}
  .point-card:nth-child(1){transform:none;}
  .point-card:nth-child(1):hover{transform:translateY(-6px);}
  .zigzag{grid-template-columns:1fr;gap:28px;margin-bottom:64px;}
  .zigzag.reverse .zz-media{order:0;}
  .zz-media{aspect-ratio:16/10;}
  .latest-grid{grid-template-columns:1fr;}
  .proof-band{grid-template-columns:1fr 1fr;gap:28px;padding:40px 32px;}
  .quote-grid{grid-template-columns:1fr;}
  .logo-wall{grid-template-columns:repeat(3,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-side{position:static;}
  .cta-block{flex-direction:column;align-items:flex-start;padding:44px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .mobile-bar{display:flex;}
}
@media (max-width:767px){
  :root{--gap:56px;}
  body{font-size:16px;line-height:1.85;}
  .container{padding:0 18px;}
  .hd-inner{padding:0 18px;height:60px;}
  .brand{font-size:16px;}
  .hero-inner{padding-top:56px;padding-bottom:64px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16.5px;}
  .hero-cta{gap:10px;}
  .hero-cta .btn{width:100%;}
  .hero-stats{gap:24px;}
  .hero-stats strong{font-size:24px;}
  .hero-panel{padding:24px;}
  .panel-list li{flex-direction:column;gap:4px;}
  .panel-list strong{text-align:left;}
  .section-head h2{font-size:23px;}
  .head-row{flex-direction:column;align-items:flex-start;gap:16px;}
  .point-card{padding:24px;}
  .point-card h3{font-size:19px;}
  .zz-body h3{font-size:19px;}
  .card-lead .card-body{padding:22px 20px 24px;}
  .mini-thumb{width:84px;height:64px;}
  .proof-band{grid-template-columns:1fr 1fr;padding:32px 24px;}
  .proof-num{font-size:28px;}
  .quote-card{padding:24px 20px;}
  .logo-wall{grid-template-columns:1fr 1fr;gap:10px;}
  .faq-q button{padding:18px 20px;font-size:16.5px;}
  .faq-a{padding:0 20px 20px;font-size:15.5px;}
  .cta-block{padding:36px 22px;}
  .cta-block h2{font-size:23px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{padding-bottom:104px;}
  .mobile-bar span{max-width:52%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: article */
:root{
  --ink:#16211F;
  --ink-2:#5A6663;
  --ink-3:#8C9793;
  --primary:#123B38;
  --primary-mid:#2C6A62;
  --primary-light:#A9CFC2;
  --primary-mist:#E7F0EC;
  --accent:#E1662F;
  --accent-dark:#C4521F;
  --bg:#F7F8F5;
  --surface:#FFFFFF;
  --surface-weak:#EFF3F1;
  --line:#E3E7E1;
  --input-line:#D8DEDA;
  --ok:#2F8F6B;
  --warn:#C9873A;
  --err:#C0492F;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(18,33,31,.04), 0 8px 24px rgba(18,33,31,.06);
  --sh-2:0 14px 36px rgba(18,33,31,.10);
  --sh-bar:0 -8px 24px rgba(18,33,31,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms var(--ease);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--primary-mid);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--accent);}
button{font-family:inherit;cursor:pointer;}
ul,ol{padding-left:1.2em;}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.25;margin:0 0 .5em;color:var(--ink);}
p{margin:0 0 1.2em;}
:focus-visible{outline:2px solid var(--primary-mid);outline-offset:2px;border-radius:6px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;
  padding:10px 16px;border-radius:0 0 10px 0;z-index:200;
}
.skip-link:focus{left:0;color:#fff;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(247,248,245,.86);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  background:linear-gradient(140deg,var(--primary) 0%,var(--primary-mid) 100%);
  display:flex;align-items:center;justify-content:center;color:var(--primary-light);
  font-size:15px;flex:0 0 auto;
}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.nav-chips{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;
  overflow-x:auto;scrollbar-width:none;padding:6px 2px;
  -webkit-overflow-scrolling:touch;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 16px;border-radius:999px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  background:var(--surface-weak);border:1px solid transparent;
  white-space:nowrap;min-height:38px;
  transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.chip:hover{background:var(--primary-mist);color:var(--primary);}
.chip.is-active{
  background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(18,59,56,.22);
}
.chip.is-active:hover{color:#fff;background:var(--primary);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:var(--surface);color:var(--primary);
  font-size:17px;align-items:center;justify-content:center;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:700;letter-spacing:0;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform var(--t),background var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(225,102,47,.26);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{border-color:var(--primary);color:var(--primary);background:transparent;}
.btn-outline:hover{background:var(--primary-mist);color:var(--primary);}
.btn-ghost{color:var(--primary);background:var(--surface);border-color:var(--line);}
.btn-ghost:hover{background:var(--primary-mist);color:var(--primary);border-color:var(--primary-light);}
.btn-sm{min-height:44px;padding:0 18px;font-size:14.5px;}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:var(--surface);
  box-shadow:var(--sh-1);padding:16px 0 20px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .drawer-chips{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.mobile-drawer .drawer-chips .chip{justify-content:center;}
.mobile-drawer .drawer-cta{display:grid;gap:10px;margin-top:16px;}

/* ---------- page banner ---------- */
.page-banner{
  position:relative;
  padding:52px 0 44px;
  background-image:linear-gradient(100deg,rgba(18,59,56,.94) 0%,rgba(18,59,56,.78) 52%,rgba(44,106,98,.72) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  color:#F2F5F3;
}
.page-banner::after{
  content:"";position:absolute;inset:auto 0 -1px 0;height:32px;
  background:linear-gradient(to bottom,rgba(247,248,245,0),var(--bg));
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(242,245,243,.72);position:relative;z-index:2;}
.breadcrumb a{color:rgba(242,245,243,.86);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{opacity:.5;}
.banner-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:18px;position:relative;z-index:2;}
.banner-label{font-size:13px;letter-spacing:.08em;color:var(--primary-light);font-weight:700;}
.banner-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13.5px;font-weight:600;
  background:rgba(231,240,236,.18);color:#F2F5F3;border:1px solid rgba(169,207,194,.4);
}
.banner-chip.is-current{background:var(--primary-light);color:var(--primary);border-color:transparent;}

/* ---------- article layout ---------- */
.article-area{padding:56px 0 72px;}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;
  align-items:start;
}
.article-main{min-width:0;}
.article-head{padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:32px;}
.article-title{font-size:40px;line-height:1.3;margin:0 0 18px;letter-spacing:-.02em;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:14px;color:var(--ink-3);}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-row .meta-item i{color:var(--primary-mid);}
.meta-tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:var(--primary-mist);color:var(--primary-mid);font-weight:700;font-size:13px;
}
.article-body{
  max-width:100%;
  font-size:17px;line-height:1.95;color:#22302D;
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:26px;line-height:1.4;margin:44px 0 18px;padding-left:16px;
  border-left:4px solid var(--primary-mid);
}
.article-body h3{font-size:20px;margin:32px 0 12px;}
.article-body h4{font-size:17.5px;margin:24px 0 10px;}
.article-body p{margin:0 0 1.25em;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.4em;}
.article-body li{margin-bottom:.55em;line-height:1.85;}
.article-body ul li::marker{color:var(--primary-mid);}
.article-body ol li::marker{color:var(--primary-mid);font-weight:700;}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  background:var(--primary-mist);border-left:3px solid var(--primary-mid);
  border-radius:0 var(--r-img) var(--r-img) 0;color:#22403B;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{margin:24px auto;border-radius:var(--r-img);box-shadow:var(--sh-1);}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;}
.article-body a{color:var(--primary-mid);border-bottom:1px solid rgba(44,106,98,.35);}
.article-body a:hover{color:var(--accent);border-bottom-color:var(--accent);}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15.5px;
  border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;
}
.article-body thead th{
  background:var(--primary);color:#F2F5F3;font-weight:700;text-align:left;
  padding:13px 16px;font-size:15px;
}
.article-body tbody td{padding:12px 16px;border-top:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:var(--primary-mist);}
.article-body pre{
  background:#0E2B29;color:#DDEBE5;border-radius:var(--r-img);
  padding:20px 22px;overflow-x:auto;font-size:14px;line-height:1.75;
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
.article-body code{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  background:var(--surface-weak);padding:2px 6px;border-radius:6px;font-size:.92em;
}
.article-body pre code{background:none;padding:0;color:inherit;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0;}

.article-foot{
  margin-top:40px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-label{font-size:13px;color:var(--ink-3);font-weight:700;}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  background:var(--surface-weak);color:var(--ink-2);font-size:13.5px;font-weight:600;
  border:1px solid var(--line);transition:background var(--t),color var(--t),border-color var(--t);
}
.tag:hover{background:var(--primary-mist);color:var(--primary);border-color:var(--primary-light);}

/* ---------- sidebar ---------- */
.article-side{position:sticky;top:96px;display:grid;gap:20px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 22px 20px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:16px;margin:0 0 14px;letter-spacing:0;}
.side-list{list-style:none;margin:0;padding:0;display:grid;gap:2px;}
.side-list li{border-bottom:1px dashed var(--line);}
.side-list li:last-child{border-bottom:none;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14.5px;font-weight:600;color:var(--ink-2);
}
.side-list a span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.side-list a i{color:var(--primary-light);font-size:12px;transition:transform var(--t),color var(--t);}
.side-list a:hover{color:var(--primary);}
.side-list a:hover i{color:var(--accent);transform:translateX(4px);}
.side-cover{position:relative;border-radius:var(--r-img);overflow:hidden;margin-bottom:14px;}
.side-cover img{width:100%;height:150px;object-fit:cover;transition:transform 300ms var(--ease);}
.side-card:hover .side-cover img{transform:scale(1.03);}
.side-card p{font-size:14px;color:var(--ink-2);line-height:1.8;margin:0 0 14px;}
.side-card .btn{width:100%;}
.side-badge{
  position:absolute;top:10px;left:10px;z-index:2;
  background:rgba(18,59,56,.82);color:#fff;font-size:12px;font-weight:700;
  padding:4px 10px;border-radius:999px;
}

/* ---------- empty state ---------- */
.empty-box{
  background:var(--primary-mist);border:1px solid var(--primary-light);border-radius:var(--r-card);
  padding:48px 32px;text-align:center;
}
.empty-box i{font-size:30px;color:var(--primary-mid);margin-bottom:14px;display:block;}
.empty-box h2{font-size:22px;margin-bottom:10px;}
.empty-box p{color:var(--ink-2);margin-bottom:22px;}

/* ---------- related ---------- */
.related-section{padding:0 0 72px;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-head h2{font-size:28px;margin:0;}
.section-head p{margin:8px 0 0;color:var(--ink-2);font-size:15px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--primary-light);}
.rel-card .cover{position:relative;overflow:hidden;aspect-ratio:16/10;}
.rel-card .cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 320ms var(--ease);}
.rel-card:hover .cover img{transform:scale(1.04);}
.rel-card .cat-badge{
  position:absolute;top:12px;left:12px;z-index:2;
  background:rgba(18,59,56,.84);color:#fff;font-size:12px;font-weight:700;
  padding:4px 11px;border-radius:999px;
}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.rel-body h3{font-size:17px;margin:0 0 10px;line-height:1.5;}
.rel-body p{font-size:14px;color:var(--ink-2);line-height:1.8;margin:0 0 16px;flex:1;}
.rel-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-3);}
.rel-foot i{color:var(--primary-mid);transition:transform var(--t);}
.rel-card:hover .rel-foot i{transform:translateX(4px);}

/* ---------- faq ---------- */
.faq-section{padding:0 0 80px;}
.faq-wrap{display:grid;grid-template-columns:340px minmax(0,1fr);gap:48px;align-items:start;}
.faq-intro{position:sticky;top:96px;}
.faq-intro h2{font-size:28px;margin:0 0 14px;}
.faq-intro p{color:var(--ink-2);font-size:15px;margin:0 0 20px;}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color var(--t),box-shadow var(--t);
}
.faq-item.is-open{border-color:var(--primary-light);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:none;border:none;text-align:left;
  font-size:17px;font-weight:700;color:var(--ink);line-height:1.6;
}
.faq-q .ico{
  width:30px;height:30px;flex:0 0 auto;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-mist);color:var(--primary-mid);font-size:13px;
  transition:transform var(--t),background var(--t),color var(--t);
}
.faq-item.is-open .faq-q .ico{transform:rotate(45deg);background:var(--accent);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease);}
.faq-a .inner{padding:0 22px 22px;color:var(--ink-2);font-size:15.5px;line-height:1.85;}
.faq-a .inner p:last-child{margin-bottom:0;}

/* ---------- cta ---------- */
.cta-band{padding:0 0 88px;}
.cta-inner{
  position:relative;overflow:hidden;
  background-image:linear-gradient(105deg,rgba(18,59,56,.96) 0%,rgba(18,59,56,.88) 55%,rgba(44,106,98,.82) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-radius:var(--r-lg);
  padding:52px 48px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  color:#F2F5F3;
}
.cta-inner::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;
  border-radius:50%;border:1px solid rgba(169,207,194,.22);
  box-shadow:0 0 0 40px rgba(169,207,194,.06);
  pointer-events:none;
}
.cta-text{position:relative;z-index:2;max-width:620px;}
.cta-text h2{color:#fff;font-size:30px;margin:0 0 12px;}
.cta-text p{color:rgba(242,245,243,.82);margin:0;font-size:15.5px;}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px;}
.btn-light{background:#fff;color:var(--primary);}
.btn-light:hover{background:var(--primary-mist);color:var(--primary);transform:translateY(-1px);}
.btn-line{border-color:rgba(242,245,243,.55);color:#F2F5F3;background:transparent;}
.btn-line:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08);}

/* ---------- footer ---------- */
.site-footer{background:var(--primary);color:#F2F5F3;padding:64px 0 26px;}
.footer-status{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--primary-light);
  background:rgba(169,207,194,.12);border:1px solid rgba(169,207,194,.28);
  padding:7px 14px;border-radius:999px;margin-bottom:36px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-mark{background:linear-gradient(140deg,#2C6A62,#A9CFC2);color:#0E2B29;}
.footer-brand p{font-size:14px;color:rgba(242,245,243,.7);line-height:1.85;margin:16px 0 0;max-width:340px;}
.footer-col h4{font-size:15px;color:#fff;margin:0 0 16px;letter-spacing:.01em;}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:11px;}
.footer-col a{font-size:14.5px;color:rgba(242,245,243,.74);}
.footer-col a:hover{color:var(--primary-light);}
.footer-col li span{font-size:14.5px;color:rgba(242,245,243,.74);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-top:22px;font-size:13.5px;color:rgba(242,245,243,.6);
}
.footer-bottom a{color:rgba(242,245,243,.68);}
.footer-bottom a:hover{color:var(--primary-light);}

/* ---------- mobile sticky bar ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:130;
  display:none;align-items:center;justify-content:space-between;gap:14px;
  padding:10px 18px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.97);border-top:1px solid var(--line);
  box-shadow:var(--sh-bar);
  transform:translateY(110%);opacity:0;
  transition:transform 260ms var(--ease),opacity 260ms var(--ease);
}
.mobile-bar.is-visible{transform:translateY(0);opacity:1;}
.mobile-bar .bar-text{font-size:13.5px;color:var(--ink-2);line-height:1.5;}
.mobile-bar .btn{min-height:44px;padding:0 18px;font-size:14.5px;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .article-grid{grid-template-columns:minmax(0,1fr) 300px;gap:36px;}
  .article-title{font-size:34px;}
}
@media (max-width:1023px){
  .site-header .nav-chips{display:none;}
  .header-actions .btn-ghost{display:none;}
  .nav-toggle{display:inline-flex;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .article-side{position:static;}
  .faq-wrap{grid-template-columns:minmax(0,1fr);gap:28px;}
  .faq-intro{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .article-area{padding:44px 0 56px;}
  .article-title{font-size:30px;}
  .cta-inner{padding:44px 34px;}
  .cta-text h2{font-size:26px;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.85;}
  .container{padding-left:18px;padding-right:18px;}
  .header-inner{height:60px;gap:14px;}
  .brand-text{font-size:16px;}
  .header-actions .btn-primary{min-height:40px;padding:0 15px;font-size:14px;}
  .page-banner{padding:36px 0 32px;}
  .banner-row{gap:8px;}
  .article-area{padding:32px 0 48px;}
  .article-title{font-size:26px;line-height:1.35;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{font-size:21px;margin:34px 0 14px;padding-left:12px;border-left-width:3px;}
  .article-body h3{font-size:18px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .section-head h2{font-size:22px;}
  .faq-intro h2{font-size:22px;}
  .faq-q{font-size:16px;padding:17px 18px;}
  .faq-a .inner{padding:0 18px 18px;font-size:15px;}
  .cta-band{padding:0 0 60px;}
  .cta-inner{padding:34px 24px;border-radius:var(--r-card);}
  .cta-text h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .site-footer{padding:48px 0 88px;}
  .mobile-bar{display:flex;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .article-title{font-size:23px;}
  .article-body table{font-size:14px;}
  .article-body thead th,.article-body tbody td{padding:10px 12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .rel-card:hover{transform:none;}
  .btn:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#123B38;
  --ink-mid:#2C6A62;
  --mint:#A9CFC2;
  --mist:#E7F0EC;
  --accent:#E1662F;
  --accent-dark:#C4521F;
  --bg:#F7F8F5;
  --card:#FFFFFF;
  --soft:#EFF3F1;
  --line:#E3E7E1;
  --input-line:#D8DEDA;
  --text:#16211F;
  --text-2:#5A6663;
  --text-3:#8C9793;
  --inv:#F2F5F3;
  --ok:#2F8F6B;
  --warn:#C9873A;
  --err:#C0492F;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(18,33,31,.04),0 8px 24px rgba(18,33,31,.06);
  --sh-2:0 14px 36px rgba(18,33,31,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:96px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:104px}
body{
  margin:0;
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.25;color:var(--text)}
h1{font-size:48px}
h2{font-size:32px}
h3{font-size:23px}
h4{font-size:18px;font-weight:700}
p{margin:0}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),background-color .18s var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
::selection{background:var(--mist);color:var(--ink)}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:999}
.skip-link:focus{left:0}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,248,245,.86);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px rgba(18,33,31,.06);
}
.header-inner{
  display:flex;align-items:center;gap:26px;
  height:72px;max-width:1200px;margin:0 auto;padding:0 32px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  background:linear-gradient(140deg,var(--ink),var(--ink-mid));
  display:grid;place-items:center;color:#fff;font-size:14px;
  box-shadow:0 6px 16px rgba(18,59,56,.24);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.nav-chips{
  display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  padding:4px 2px;scroll-behavior:smooth;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 16px;
  border-radius:999px;font-size:14.5px;font-weight:500;color:var(--text-2);
  white-space:nowrap;transition:background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.chip:hover{background:var(--mist);color:var(--ink)}
.chip.is-active{
  background:var(--ink);color:#fff;font-weight:600;
  box-shadow:0 6px 16px rgba(18,59,56,.22);
}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;color:var(--ink);
  border:1px solid var(--line);background:#fff;font-size:17px;
}
.nav-toggle:hover{background:var(--mist)}

.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:18px 24px 24px;
}
.mobile-drawer.is-open{display:block}
.drawer-label{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--text-3);margin-bottom:14px}
.drawer-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.drawer-grid a{
  display:flex;align-items:center;justify-content:center;min-height:46px;
  border:1px solid var(--line);border-radius:12px;background:var(--bg);
  font-size:14.5px;font-weight:500;color:var(--text-2);text-align:center;padding:8px 10px;
}
.drawer-grid a.is-active{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:600}
.drawer-cta{margin-top:16px;display:flex}
.drawer-cta .btn{width:100%}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(225,102,47,.26)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 12px 26px rgba(225,102,47,.30)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(225,102,47,.24)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.55);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff}
.btn-outline{border:1.5px solid var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--mist)}
.btn-sm{height:44px;padding:0 20px;font-size:14.5px}
.btn-on-dark{background:#fff;color:var(--ink)}
.btn-on-dark:hover{background:var(--mist);transform:translateY(-1px)}

/* ---------- 首屏 ---------- */
.hero{position:relative;overflow:hidden;background:var(--ink);color:var(--inv)}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.55;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(112deg,rgba(18,59,56,.96) 0%,rgba(18,59,56,.84) 46%,rgba(18,59,56,.52) 100%);
}
.hero-inner{position:relative;z-index:2;padding-top:58px;padding-bottom:72px}
.breadcrumb{display:flex;align-items:center;gap:9px;font-size:13.5px;color:rgba(242,245,243,.70);margin-bottom:20px}
.breadcrumb a{color:rgba(242,245,243,.86)}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{color:rgba(242,245,243,.4)}
.breadcrumb .current{color:var(--mint)}

.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(169,207,194,.16);border:1px solid rgba(169,207,194,.36);
  color:var(--mint);font-size:13px;font-weight:600;letter-spacing:.04em;
  margin-bottom:22px;
}
.hero-tag i{font-size:12px}
.hero h1{color:#fff;font-size:44px;max-width:820px;line-height:1.25}
.hero-sub{margin-top:20px;font-size:17.5px;line-height:1.85;color:rgba(242,245,243,.86);max-width:640px}
.hero-cta{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px}
.hero-meta{
  margin-top:38px;display:flex;flex-wrap:wrap;gap:12px 34px;
  padding-top:26px;border-top:1px solid rgba(255,255,255,.14);
}
.hero-meta-item{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(242,245,243,.78)}
.hero-meta-item i{color:var(--mint);font-size:13px}

/* ---------- 通用板块 ---------- */
.section{padding-top:var(--sec);padding-bottom:var(--sec)}
.section-tight{padding-top:72px;padding-bottom:72px}
.section-head{max-width:720px;margin-bottom:44px}
.section-kicker{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.16em;
  color:var(--ink-mid);margin-bottom:14px;
}
.section-head h2{font-size:32px}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16.5px;line-height:1.85}

/* ---------- 文档型布局 ---------- */
.doc-layout{
  display:grid;grid-template-columns:248px minmax(0,1fr);gap:56px;align-items:start;
}
.doc-aside{position:sticky;top:100px}
.aside-title{
  font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--text-3);
  margin-bottom:14px;padding-left:16px;
}
.anchor-list{display:flex;flex-direction:column;border-left:2px solid var(--line)}
.anchor-list a{
  display:block;padding:10px 16px;font-size:14.5px;color:var(--text-2);
  border-left:2px solid transparent;margin-left:-2px;line-height:1.5;
}
.anchor-list a:hover{color:var(--ink);background:var(--mist);border-left-color:var(--mint);border-radius:0 8px 8px 0}
.aside-note{
  margin-top:28px;padding:20px;border-radius:var(--r-card);
  background:var(--soft);border:1px solid var(--line);
}
.aside-note p{font-size:13.5px;line-height:1.8;color:var(--text-2)}
.aside-note strong{display:block;font-size:14.5px;color:var(--ink);margin-bottom:8px}

.doc-main{min-width:0}
.doc-section{padding-bottom:56px;margin-bottom:56px;border-bottom:1px dashed var(--line)}
.doc-section:last-child{padding-bottom:0;margin-bottom:0;border-bottom:0}
.doc-section h2{position:relative;padding-left:18px;font-size:28px;line-height:1.35}
.doc-section h2::before{
  content:"";position:absolute;left:0;top:.16em;width:4px;height:1em;
  border-radius:2px;background:var(--ink);
}
.doc-section p{margin-top:18px;color:var(--text-2);font-size:16.5px;line-height:1.95}
.doc-section p strong{color:var(--text);font-weight:700}

.doc-figure{margin-top:26px;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1);background:var(--mist)}
.doc-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .55s var(--ease)}
.doc-figure:hover img{transform:scale(1.03)}
.doc-figure figcaption{
  padding:12px 18px;font-size:13px;color:var(--text-3);
  background:#fff;border-top:1px solid var(--line);text-align:center;
}

.point-list{margin-top:24px;display:grid;gap:12px}
.point-list li{
  position:relative;padding-left:34px;font-size:16px;line-height:1.8;color:var(--text);
}
.point-list li::before{
  content:"\2713";position:absolute;left:0;top:4px;
  width:20px;height:20px;display:grid;place-items:center;
  border-radius:50%;background:var(--mist);color:var(--ink-mid);
  font-size:11px;font-weight:800;
}
.point-list li span{color:var(--text-2)}

.step-list{counter-reset:step;margin-top:26px;display:grid;gap:16px}
.step-list li{
  counter-increment:step;position:relative;padding-left:50px;
  font-size:16px;line-height:1.8;color:var(--text-2);
}
.step-list li strong{display:block;color:var(--text);font-weight:700;margin-bottom:2px}
.step-list li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:1px;width:34px;height:34px;
  display:grid;place-items:center;border-radius:10px;
  background:var(--mist);color:var(--ink);
  font-family:'Inter',sans-serif;font-weight:700;font-size:13px;letter-spacing:.02em;
}

.callout{
  margin-top:28px;padding:22px 24px;border-radius:var(--r-card);
  background:var(--mist);border-left:3px solid var(--ink-mid);
}
.callout p{font-size:15px;line-height:1.85;color:var(--ink);font-weight:500}

/* ---------- FAQ ---------- */
.faq-wrap{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.faq-list{display:grid;gap:12px;margin-top:34px}
.faq-item{
  margin:0;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
  transition:box-shadow .2s var(--ease);
}
.faq-item[open]{box-shadow:var(--sh-2)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;
  justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:18px;font-weight:600;line-height:1.5;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:22px;font-weight:400;
  color:var(--ink-mid);line-height:1;transition:transform .22s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item summary:hover{background:#FBFCFB}
.faq-body{padding:0 24px 24px;font-size:16px;line-height:1.85;color:var(--text-2)}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink);color:#fff;border-radius:var(--r-lg);
  padding:56px 56px;display:grid;grid-template-columns:minmax(0,1fr) auto;
  gap:36px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:340px;height:340px;
  border-radius:50%;background:radial-gradient(circle,rgba(169,207,194,.22),rgba(169,207,194,0) 70%);
}
.cta-band::after{
  content:"";position:absolute;left:-60px;bottom:-120px;width:260px;height:260px;
  border-radius:50%;border:1px solid rgba(255,255,255,.10);
}
.cta-copy{position:relative;z-index:2}
.cta-copy h2{color:#fff;font-size:30px;line-height:1.35}
.cta-copy p{margin-top:14px;color:rgba(242,245,243,.82);font-size:16px;max-width:520px;line-height:1.85}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--inv);margin-top:96px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:44px;padding-top:72px;padding-bottom:52px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-mark{background:rgba(169,207,194,.18);box-shadow:none}
.footer-brand .brand-text{color:#fff}
.footer-desc{font-size:14.5px;line-height:1.9;color:rgba(242,245,243,.66);max-width:320px}
.footer-title{
  font-size:13px;font-weight:700;letter-spacing:.1em;
  color:rgba(242,245,243,.52);margin-bottom:20px;
}
.footer-links{display:grid;gap:12px}
.footer-links a{font-size:15px;color:rgba(242,245,243,.84);line-height:1.5}
.footer-links a:hover{color:var(--mint)}
.footer-contact{display:grid;gap:12px;font-size:14.5px;color:rgba(242,245,243,.72)}
.footer-contact span{display:flex;align-items:center;gap:10px}
.footer-contact i{color:var(--mint);font-size:13px;width:16px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;
}
.footer-bottom-inner{
  display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;
  font-size:13.5px;color:rgba(242,245,243,.58);
}
.footer-meta{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:rgba(242,245,243,.7);
}
.footer-meta i{color:var(--mint);font-size:12px}

/* ---------- 移动端固定转化条 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:none;align-items:center;justify-content:space-between;gap:14px;
  padding:10px 18px calc(10px + env(safe-area-inset-bottom));
  min-height:64px;background:#fff;
  border-top:1px solid var(--line);
  box-shadow:0 -8px 24px rgba(18,33,31,.08);
  opacity:0;transform:translateY(100%);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.mobile-bar.is-visible{opacity:1;transform:translateY(0)}
.mobile-bar-text{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-2);min-width:0;
}
.mobile-bar-text i{color:var(--ink-mid);font-size:13px}
.mobile-bar-text span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sec:80px}
  .hero h1{font-size:40px}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .container{padding-left:24px;padding-right:24px}
  .header-inner{padding:0 24px;gap:18px}
  .hero-inner{padding-top:48px;padding-bottom:60px}
  .hero h1{font-size:34px}
  .hero-sub{font-size:16.5px}
  .doc-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .doc-aside{display:none}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:44px 36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  :root{--sec:56px}
  body{font-size:16px;line-height:1.85}
  .container{padding-left:18px;padding-right:18px}
  .header-inner{padding:0 18px;height:60px;gap:12px}
  .nav-chips{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
  .hero-inner{padding-top:34px;padding-bottom:46px}
  .hero h1{font-size:28px;line-height:1.3}
  .hero-sub{font-size:15.5px;margin-top:16px}
  .hero-cta{margin-top:26px;gap:12px}
  .hero-cta .btn{width:100%}
  .hero-meta{gap:10px 20px;padding-top:20px;margin-top:28px}
  .hero-meta-item{font-size:13px}
  .breadcrumb{font-size:12.5px;margin-bottom:14px;flex-wrap:wrap}
  .section-head{margin-bottom:30px}
  .section-head h2,.doc-section h2{font-size:22px}
  .section-head p{font-size:15.5px}
  .doc-section{padding-bottom:40px;margin-bottom:40px}
  .doc-section p{font-size:15.5px}
  .doc-section h2{padding-left:14px}
  .doc-section h2::before{width:3px}
  .step-list li{padding-left:44px}
  .step-list li::before{width:30px;height:30px;font-size:12px}
  .faq-item summary{padding:16px 18px;font-size:16.5px}
  .faq-body{padding:0 18px 20px;font-size:15px}
  .cta-band{padding:34px 24px;gap:26px}
  .cta-copy h2{font-size:22px}
  .cta-copy p{font-size:15px}
  .cta-actions .btn{width:100%}
  .site-footer{margin-top:56px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-top:48px;padding-bottom:36px}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start;gap:10px}
  .mobile-bar{display:flex}
}
@media (max-width:520px){
  .hero h1{font-size:25px}
  .hero-tag{font-size:12px;padding:5px 12px;margin-bottom:16px}
  .drawer-grid{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .doc-figure:hover img{transform:none}
  .btn:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#123B38;
  --ink-2:#2C6A62;
  --ink-3:#A9CFC2;
  --mist:#E7F0EC;
  --accent:#E1662F;
  --accent-d:#C4521F;
  --bg:#F7F8F5;
  --card:#FFFFFF;
  --soft:#EFF3F1;
  --line:#E3E7E1;
  --input-line:#D8DEDA;
  --t1:#16211F;
  --t2:#5A6663;
  --t3:#8C9793;
  --white:#F2F5F3;
  --ok:#2F8F6B;
  --warn:#C9873A;
  --err:#C0492F;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(18,33,31,.04),0 8px 24px rgba(18,33,31,.06);
  --sh-2:0 14px 36px rgba(18,33,31,.10);
  --ease:200ms cubic-bezier(.2,.7,.3,1);
  --sec:96px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;line-height:1.9;color:var(--t1);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink-2);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--accent)}
h1,h2,h3,h4{font-weight:700;letter-spacing:-.02em;line-height:1.25;color:var(--t1);margin:0}
h1{font-size:48px}
h2{font-size:32px}
h3{font-size:23px}
h4{font-size:18px}
p{margin:0 0 1.1em}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.sec{padding:var(--sec) 0}
.sec--soft{background:var(--soft)}
.sec--tight{padding-top:64px}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.08em;color:var(--ink-2);background:var(--mist);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.sec-head h2{margin-bottom:14px}
.sec-head p{color:var(--t2);font-size:17px;margin:0}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(247,248,245,.86);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;transition:box-shadow var(--ease),border-color var(--ease),background var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.94);border-bottom-color:var(--line);box-shadow:0 8px 24px rgba(18,33,31,.07)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--t1);font-weight:800;font-size:17px;letter-spacing:-.02em}
.brand:hover{color:var(--t1)}
.brand-mark{
  width:30px;height:30px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--ink) 0%,var(--ink-2) 100%);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;
}
.nav-wrap{flex:1 1 auto;min-width:0;position:relative}
.nav-chips{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:4px 2px}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:9px 16px;border-radius:999px;font-size:14.5px;font-weight:500;
  color:var(--t2);background:transparent;border:1px solid transparent;
  transition:background var(--ease),color var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.chip:hover{background:var(--mist);color:var(--ink)}
.chip.is-active{background:var(--ink);color:#fff;box-shadow:0 6px 16px rgba(18,59,56,.22)}
.chip.is-active:hover{color:#fff;background:var(--ink)}
.header-cta{display:flex;align-items:center;gap:18px;flex:0 0 auto}
.header-link{font-size:14.5px;font-weight:500;color:var(--t2)}
.header-link:hover{color:var(--accent)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--ink);align-items:center;justify-content:center;cursor:pointer;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:700;border:1.5px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.btn i{font-size:13px;transition:transform var(--ease)}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(225,102,47,.24)}
.btn--primary:hover{background:var(--accent-d);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(196,82,31,.28)}
.btn--primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(196,82,31,.22)}
.btn--ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn--ghost:hover{background:var(--mist);color:var(--ink)}
.btn--light{border-color:rgba(255,255,255,.5);color:#fff;background:rgba(255,255,255,.06)}
.btn--light:hover{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.8)}
.btn--onDark{background:#fff;color:var(--ink)}
.btn--onDark:hover{background:var(--mist);color:var(--ink);transform:translateY(-1px)}
.btn--sm{height:44px;padding:0 18px;font-size:14.5px}
.btn:hover i.fa-arrow-right{transform:translateX(4px)}

/* ---------- Mobile drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:rgba(18,33,31,.42);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(86vw,360px);height:100%;background:#fff;
  padding:22px 20px calc(30px + env(safe-area-inset-bottom));overflow-y:auto;
  transform:translateX(100%);transition:transform 220ms cubic-bezier(.2,.7,.3,1);
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:24px}
.drawer-grid .chip{justify-content:center;background:var(--soft);padding:12px 10px;text-align:center;white-space:normal;line-height:1.4}
.drawer-grid .chip.is-active{background:var(--ink);color:#fff}
.drawer-cta{display:block;width:100%;margin-bottom:12px}
.drawer-note{font-size:13px;color:var(--t3);line-height:1.7}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--ink);
  padding:64px 0 72px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.5;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(18,59,56,.94) 0%,rgba(18,59,56,.84) 46%,rgba(44,106,98,.66) 100%);
}
.hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.7);margin-bottom:22px}
.breadcrumb a{color:rgba(255,255,255,.82)}
.breadcrumb a:hover{color:#fff}
.breadcrumb span{opacity:.55}
.hero-grid{display:grid;grid-template-columns:1.28fr .92fr;gap:56px;align-items:center}
.hero h1{font-size:48px;color:#fff;margin-bottom:18px;animation:riseIn .6s cubic-bezier(.2,.7,.3,1) both}
.hero-sub{font-size:18px;line-height:1.8;color:rgba(242,245,243,.86);max-width:560px;margin-bottom:28px;animation:riseIn .6s .08s cubic-bezier(.2,.7,.3,1) both}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;animation:riseIn .6s .14s cubic-bezier(.2,.7,.3,1) both}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
  padding:6px 14px;border-radius:999px;margin-bottom:20px;color:#F2F5F3;
}
.hero-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:0 24px 60px rgba(0,0,0,.28);animation:riseIn .6s .18s cubic-bezier(.2,.7,.3,1) both}
.hero-figure img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 20px 16px;
  font-size:13.5px;color:rgba(255,255,255,.9);
  background:linear-gradient(180deg,rgba(18,59,56,0) 0%,rgba(18,59,56,.86) 100%);
}
@keyframes riseIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

/* ---------- Step tabs ---------- */
.stepbar{
  position:sticky;top:72px;z-index:40;background:rgba(247,248,245,.94);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
}
.stepbar-inner{position:relative;padding:14px 0}
.step-tabs{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none}
.step-tabs::-webkit-scrollbar{display:none}
.step-tab{
  white-space:nowrap;border:1px solid var(--line);background:#fff;color:var(--t2);
  padding:10px 18px;border-radius:999px;font-size:14.5px;font-weight:600;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.step-tab:hover{border-color:var(--ink-3);color:var(--ink)}
.step-tab[aria-selected="true"]{background:var(--ink);border-color:var(--ink);color:#fff;box-shadow:0 8px 18px rgba(18,59,56,.2)}

/* ---------- Panels ---------- */
.panel{display:none}
.panel.is-active{display:block;animation:riseIn .38s cubic-bezier(.2,.7,.3,1) both}
.step-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:8px}
.step-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 26px;box-shadow:var(--sh-1);transition:transform var(--ease),box-shadow var(--ease);
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.step-grid .step-card:nth-child(even){margin-top:28px}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;background:var(--mist);color:var(--ink);
  font-family:"Inter",sans-serif;font-weight:800;font-size:15px;margin-bottom:16px;
}
.step-card h3{font-size:20px;margin-bottom:10px}
.step-card p{color:var(--t2);font-size:15.5px;line-height:1.85;margin:0}
.step-card ul{margin-top:14px;border-top:1px dashed var(--line);padding-top:14px}
.step-card li{position:relative;padding-left:18px;font-size:14.5px;color:var(--t2);line-height:1.8;margin-bottom:6px}
.step-card li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--ink-3)}

/* ---------- Demo showcase ---------- */
.showcase{
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px;box-shadow:var(--sh-1);
}
.showcase figure{margin:0;border-radius:var(--r-img);overflow:hidden}
.showcase img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 260ms cubic-bezier(.2,.7,.3,1)}
.showcase figure:hover img{transform:scale(1.03)}
.showcase h2{font-size:28px;margin-bottom:14px}
.showcase p{color:var(--t2);font-size:16px;margin-bottom:18px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--t2);margin-bottom:10px;line-height:1.75}
.check-list i{color:var(--ok);margin-top:7px;font-size:13px}

/* ---------- Table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-1)}
table.compare{width:100%;border-collapse:collapse;min-width:720px}
table.compare caption{text-align:left;padding:20px 24px 0;font-size:15px;color:var(--t3)}
table.compare th,table.compare td{padding:16px 22px;font-size:15px;text-align:left;border-bottom:1px solid var(--line)}
table.compare thead th{background:var(--ink);color:#F2F5F3;font-weight:700;font-size:15px;border-bottom:none}
table.compare tbody tr:nth-child(odd){background:var(--mist)}
table.compare tbody tr:hover{background:#DCEBE5}
table.compare tbody td:first-child{font-weight:700;color:var(--t1)}
table.compare tbody tr:last-child td{border-bottom:none}
.tag{display:inline-block;font-size:12.5px;font-weight:700;padding:3px 10px;border-radius:999px;line-height:1.6}
.tag--ok{background:rgba(47,143,107,.12);color:var(--ok)}
.tag--warn{background:rgba(201,135,58,.14);color:var(--warn)}
.tag--ink{background:var(--mist);color:var(--ink)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.85fr 1.4fr;gap:56px;align-items:start}
.faq-aside{position:sticky;top:150px}
.faq-aside h2{margin-bottom:14px}
.faq-aside p{color:var(--t2);font-size:16px;margin-bottom:22px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:12px;box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow var(--ease)}
.faq-item:hover{box-shadow:var(--sh-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:transparent;border:none;text-align:left;cursor:pointer;
  padding:20px 24px;font-size:18px;font-weight:600;color:var(--t1);line-height:1.5;
}
.faq-q i{color:var(--ink-2);font-size:15px;transition:transform var(--ease);flex:0 0 auto}
.faq-item.is-open .faq-q i{transform:rotate(45deg);color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms cubic-bezier(.2,.7,.3,1)}
.faq-a p{padding:0 24px 22px;margin:0;color:var(--t2);font-size:15.5px;line-height:1.85}

/* ---------- Related chips ---------- */
.related{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.related a{
  display:inline-flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:12px 20px;font-size:15px;font-weight:600;color:var(--ink);
  box-shadow:var(--sh-1);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.related a:hover{transform:translateY(-2px);border-color:var(--ink-3);box-shadow:var(--sh-2);color:var(--ink)}
.related a i{color:var(--accent);font-size:13px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--ink);color:#fff;padding:56px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  box-shadow:0 24px 60px rgba(18,59,56,.22);
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-80px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(169,207,194,.26) 0%,rgba(169,207,194,0) 70%);
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:rgba(255,255,255,.12);
}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:12px;position:relative}
.cta-band p{color:rgba(242,245,243,.82);margin:0;max-width:620px;position:relative;font-size:16px}
.cta-band .cta-actions{position:relative;display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(242,245,243,.76);padding:64px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;letter-spacing:0}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.site-footer p{font-size:14.5px;line-height:1.85;margin:0;color:rgba(242,245,243,.7)}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14.5px;color:rgba(242,245,243,.76)}
.footer-links a:hover{color:var(--ink-3)}
.footer-contact li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;margin-bottom:12px;color:rgba(242,245,243,.76)}
.footer-contact i{color:var(--ink-3);margin-top:6px;font-size:13px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(242,245,243,.58);
}

/* ---------- Mobile fixed bar ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  display:none;align-items:center;justify-content:space-between;gap:14px;
  background:#fff;border-top:1px solid var(--line);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  box-shadow:0 -8px 24px rgba(18,33,31,.08);
  transform:translateY(110%);transition:transform 240ms cubic-bezier(.2,.7,.3,1);
}
.mobile-bar.is-show{transform:translateY(0)}
.mobile-bar footer{
  display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--t2);
}
.mobile-bar footer i{color:var(--ink-2);font-size:13px}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .hero h1{font-size:42px}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .container{padding:0 24px}
  h1{font-size:34px}
  h2{font-size:26px}
  .nav-wrap,.header-cta .header-link{display:none}
  .nav-toggle{display:inline-flex}
  .header-cta .btn{display:none}
  .hero{padding:52px 0 60px}
  .hero h1{font-size:34px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure{max-width:560px}
  .showcase{grid-template-columns:1fr;gap:28px;padding:28px}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .stepbar{top:60px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.85}
  :root{--sec:56px}
  .container{padding:0 18px}
  h1{font-size:30px}
  h2{font-size:23px}
  h3{font-size:19px}
  h4{font-size:17px}
  .header-inner{height:60px;gap:14px}
  .brand{font-size:15.5px}
  .brand-mark{width:26px;height:26px;font-size:12px}
  .step-grid{grid-template-columns:1fr;gap:16px}
  .step-grid .step-card:nth-child(even){margin-top:0}
  .step-card{padding:22px 20px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .showcase{padding:20px}
  .faq-q{font-size:17px;padding:18px 18px}
  .faq-a p{padding:0 18px 18px}
  .cta-band{padding:32px 22px}
  .cta-band h2{font-size:23px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .site-footer{margin-top:56px;padding-top:48px}
  .mobile-bar{display:flex}
  .stepbar-inner{padding:10px 0}
}
@media (max-width:520px){
  .hero-figure img{aspect-ratio:4/3}
  .related a{width:100%;justify-content:space-between}
  .mobile-bar footer{font-size:12.5px}
  .mobile-bar .btn{height:42px;padding:0 16px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --ink:#123B38;
  --ink-mid:#2C6A62;
  --mist:#A9CFC2;
  --mist-bg:#E7F0EC;
  --accent:#E1662F;
  --accent-deep:#C4521F;
  --bg:#F7F8F5;
  --card:#FFFFFF;
  --soft:#EFF3F1;
  --line:#E3E7E1;
  --line-input:#D8DEDA;
  --t1:#16211F;
  --t2:#5A6663;
  --t3:#8C9793;
  --inverse:#F2F5F3;
  --ok:#2F8F6B;
  --warn:#C9873A;
  --err:#C0492F;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(18,33,31,.04),0 8px 24px rgba(18,33,31,.06);
  --sh-2:0 14px 36px rgba(18,33,31,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink-mid);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--accent)}
button,input,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.25;color:var(--t1)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0;color:#fff}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.numeric{font-family:"Inter","Noto Sans SC",sans-serif;font-variant-numeric:tabular-nums}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,248,245,.88);
  backdrop-filter:saturate(150%) blur(12px);
  -webkit-backdrop-filter:saturate(150%) blur(12px);
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.94);border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(18,33,31,.05)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:800;letter-spacing:-.02em}
.logo:hover{color:var(--ink)}
.logo-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:10px;
  background:linear-gradient(140deg,var(--ink),var(--ink-mid));
  display:inline-flex;align-items:center;justify-content:center;
}
.logo-mark svg{width:18px;height:18px;fill:none;stroke:var(--mist);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.logo-text{font-size:20px;white-space:nowrap}
.nav-wrap{position:relative;flex:1 1 auto;min-width:0}
.nav-wrap::before,.nav-wrap::after{
  content:"";position:absolute;top:0;bottom:0;width:24px;pointer-events:none;z-index:2;
}
.nav-wrap::before{left:0;background:linear-gradient(90deg,rgba(247,248,245,.95),rgba(247,248,245,0))}
.nav-wrap::after{right:0;background:linear-gradient(270deg,rgba(247,248,245,.95),rgba(247,248,245,0))}
.nav-chips{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;padding:6px 4px}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 16px;border-radius:999px;
  background:var(--soft);color:var(--t2);
  font-size:15px;font-weight:500;white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.chip:hover{background:var(--mist-bg);color:var(--ink);transform:translateY(-1px)}
.chip.is-active{background:var(--ink);color:#fff;box-shadow:0 6px 16px rgba(18,59,56,.20)}
.chip.is-active:hover{background:var(--ink);color:#fff}
.header-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.link-quiet{font-size:15px;font-weight:500;color:var(--t2)}
.link-quiet:hover{color:var(--accent)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--card);color:var(--ink);
  align-items:center;justify-content:center;font-size:18px;
}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:var(--card);padding:18px 0 24px}
.mobile-drawer.open{display:block}
.drawer-chips{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.drawer-chips .chip{height:44px;width:100%}
.drawer-actions{margin-top:16px;display:grid;gap:10px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;white-space:nowrap;cursor:pointer;
  border:1.5px solid transparent;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn i{font-size:14px;transition:transform .18s var(--ease)}
.btn:hover i{transform:translateX(4px)}
.btn-sm{height:42px;padding:0 18px;font-size:15px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(225,102,47,.24)}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(225,102,47,.28)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--mist-bg);color:var(--ink)}
.btn-inverse{border-color:rgba(255,255,255,.55);color:var(--inverse);background:transparent}
.btn-inverse:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-ondark{background:#fff;color:var(--ink)}
.btn-ondark:hover{background:var(--mist-bg);color:var(--ink);transform:translateY(-1px)}
.btn-block{width:100%}

/* ============ 首屏 ============ */
.page-hero{
  position:relative;overflow:hidden;color:var(--inverse);
  padding:56px 0 72px;
  background:
    linear-gradient(135deg,rgba(18,59,56,.94) 0%,rgba(18,59,56,.80) 55%,rgba(44,106,98,.78) 100%),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(169,207,194,.20),rgba(169,207,194,0) 70%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(242,245,243,.72);margin-bottom:22px}
.breadcrumb a{color:rgba(242,245,243,.86)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(242,245,243,.42)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  background:rgba(169,207,194,.18);border:1px solid rgba(169,207,194,.36);
  color:var(--mist);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.page-hero h1{
  color:#fff;margin:20px 0 18px;
  font-size:clamp(30px,4.4vw,48px);font-weight:800;letter-spacing:-.02em;
  animation:rise .6s var(--ease) both;
}
.hero-lead{max-width:620px;color:rgba(242,245,243,.88);font-size:17px;line-height:1.9}
@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.search-box{
  margin-top:28px;max-width:560px;
  display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.96);border-radius:14px;padding:8px 8px 8px 16px;
  box-shadow:0 18px 40px rgba(6,26,24,.28);
}
.search-box label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.search-box i{color:var(--t3);font-size:15px}
.search-box input{
  flex:1 1 auto;min-width:0;height:44px;border:0;background:transparent;
  font-size:16px;color:var(--t1);
}
.search-box input::placeholder{color:var(--t3)}
.search-box input:focus{outline:none}
.search-hint{margin-top:12px;font-size:14px;color:rgba(242,245,243,.66)}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:36px}
.hero-stat{min-width:120px}
.hero-stat b{display:block;font-family:"Inter","Noto Sans SC",sans-serif;font-size:28px;font-weight:800;color:#fff;letter-spacing:-.02em}
.hero-stat span{display:block;margin-top:2px;font-size:14px;color:rgba(242,245,243,.70)}
.hero-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:0 24px 60px rgba(6,26,24,.36);border:1px solid rgba(255,255,255,.16)}
.hero-figure img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-float{
  position:absolute;left:18px;bottom:18px;right:18px;
  background:rgba(255,255,255,.94);border-radius:14px;padding:14px 16px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  box-shadow:0 10px 26px rgba(6,26,24,.20);
}
.hero-float span{font-size:14px;color:var(--t2)}
.hero-float b{font-family:"Inter","Noto Sans SC",sans-serif;font-size:17px;color:var(--ink)}

/* ============ 通用板块 ============ */
.section{padding:var(--sec) 0}
.section-soft{background:var(--soft)}
.section-ink{background:var(--ink);color:var(--inverse)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:clamp(23px,2.7vw,32px);margin-bottom:14px}
.section-head p{color:var(--t2);font-size:16.5px}
.section-ink .section-head h2,.section-ink .section-head p{color:var(--inverse)}
.section-ink .section-head p{color:rgba(242,245,243,.76)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:999px;
  background:var(--mist-bg);color:var(--ink-mid);
  font-size:13px;font-weight:600;
}
.grid-gap-24{gap:24px}
.grid-gap-32{gap:32px}

/* 数据条 */
.stat-strip{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:8px 0;
}
.stat-strip .grid-x{margin:0}
.stat-cell{padding:22px 24px;border-right:1px dashed var(--line)}
.stat-cell:last-child{border-right:0}
.stat-cell b{display:block;font-family:"Inter","Noto Sans SC",sans-serif;font-size:26px;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.stat-cell span{display:block;margin-top:4px;font-size:14px;color:var(--t2)}

/* 卡片 */
.vcard{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:28px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.vcard:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.vcard h3{font-size:21px;margin-bottom:12px}
.vcard p{color:var(--t2);font-size:16px}
.step-card{position:relative;padding-top:68px}
.step-num{
  position:absolute;top:24px;left:28px;
  font-family:"Inter",sans-serif;font-size:15px;font-weight:700;letter-spacing:.06em;
  color:var(--ink-mid);background:var(--mist-bg);border-radius:999px;padding:5px 12px;
}
.step-card.offset{margin-top:24px}

/* 表格 */
.table-wrap{overflow-x:auto;border-radius:var(--r-card)}
.spec-table{
  width:100%;min-width:760px;border-collapse:separate;border-spacing:0;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
}
.spec-table th,.spec-table td{padding:16px 20px;text-align:left;font-size:15.5px;border-bottom:1px solid var(--line)}
.spec-table thead th{
  background:var(--ink);color:var(--inverse);font-weight:600;font-size:15px;
  border-bottom:0;white-space:nowrap;
}
.spec-table thead th:first-child{color:rgba(242,245,243,.72)}
.spec-table tbody th{font-weight:700;color:var(--t1);background:var(--card);white-space:nowrap}
.spec-table tbody td{color:var(--t2)}
.spec-table tbody tr:nth-child(even) > *{background:#F4F9F6}
.spec-table tbody tr:last-child > *{border-bottom:0}
.table-note{margin-top:14px;font-size:14px;color:var(--t3)}

/* 图文块 */
.feature-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);border:1px solid var(--line)}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s var(--ease)}
.feature-media:hover img{transform:scale(1.03)}
.check-list{display:grid;gap:12px;margin-top:22px}
.check-list li{display:flex;gap:10px;align-items:flex-start;color:var(--t2);font-size:16px;line-height:1.75}
.check-list li i{color:var(--ok);margin-top:7px;font-size:14px}
.check-list li b{color:var(--t1);font-weight:600}

/* FAQ */
.faq-list{display:grid;gap:12px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--sh-1);overflow:hidden;
  transition:box-shadow .2s var(--ease)
}
.faq-item.open{box-shadow:var(--sh-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:18px;font-weight:600;color:var(--t1);
  min-height:44px;
}
.faq-q:hover{color:var(--ink-mid)}
.faq-q i{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--mist-bg);color:var(--ink-mid);font-size:12px;
  transition:transform .22s var(--ease);
}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{display:none;padding:0 22px 22px;color:var(--t2);font-size:16px;line-height:1.85;max-width:820px}
.faq-item.open .faq-a{display:block}

/* 频道推荐 */
.channel-row{display:flex;flex-wrap:wrap;gap:14px}
.channel-chip{
  display:inline-flex;align-items:center;gap:12px;
  padding:14px 20px;border-radius:999px;background:var(--card);
  border:1px solid var(--line);box-shadow:var(--sh-1);
  color:var(--t1);font-weight:600;font-size:16px;min-height:44px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.channel-chip i{color:var(--ink-mid);font-size:15px;transition:transform .18s var(--ease)}
.channel-chip:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--mist);color:var(--ink)}
.channel-chip:hover i{transform:translateX(4px)}
.channel-chip.is-active{background:var(--ink);color:#fff;border-color:var(--ink)}
.channel-chip.is-active i{color:var(--mist)}

/* 底部 CTA */
.cta-block{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(135deg,var(--ink) 0%,#17453F 60%,var(--ink-mid) 100%);
  color:var(--inverse);padding:56px;
  box-shadow:0 24px 60px rgba(18,59,56,.22);
}
.cta-block::after{
  content:"";position:absolute;left:-80px;top:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(169,207,194,.20),rgba(169,207,194,0) 70%);
}
.cta-block h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;position:relative;z-index:2}
.cta-block p{color:rgba(242,245,243,.80);max-width:560px;position:relative;z-index:2}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;position:relative;z-index:2}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(242,245,243,.80);padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .logo{color:#fff}
.site-footer .logo-text{color:#fff}
.footer-brand p{margin-top:18px;font-size:15px;line-height:1.85;color:rgba(242,245,243,.70);max-width:340px}
.footer-col h3{font-size:15px;color:#fff;letter-spacing:.02em;margin-bottom:18px;font-weight:700}
.footer-col ul{display:grid;gap:12px}
.footer-col a{color:rgba(242,245,243,.78);font-size:15px}
.footer-col a:hover{color:var(--mist)}
.footer-contact li{font-size:15px;color:rgba(242,245,243,.78)}
.footer-contact i{width:18px;color:var(--mist);margin-right:6px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:14px;color:rgba(242,245,243,.62);
}

/* 移动固定转化条 */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:none;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:#fff;box-shadow:0 -8px 24px rgba(18,33,31,.08);
  transform:translateY(110%);opacity:0;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.mobile-bar.show{transform:none;opacity:1}
.mobile-bar .bar-hint{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--t2)}
.mobile-bar .bar-hint i{color:var(--ink-mid)}

@media (max-width:1279px){
  .container{max-width:1120px}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .container{padding:0 24px}
  .nav-wrap,.header-actions{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{min-height:60px;gap:12px;justify-content:space-between}
  .page-hero{padding:44px 0 56px}
  .cta-block{padding:40px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .stat-cell:nth-child(2){border-right:0}
  .stat-cell{border-bottom:1px dashed var(--line);border-right:0}
  .stat-cell:last-child{border-bottom:0}
}
@media (max-width:767px){
  :root{--sec:56px}
  body{font-size:16px}
  .container{padding:0 18px}
  .logo-text{font-size:17px}
  .logo-mark{width:28px;height:28px;flex-basis:28px}
  .page-hero h1{margin:16px 0 14px}
  .hero-stats{gap:22px;margin-top:28px}
  .hero-stat b{font-size:23px}
  .search-box{padding:6px 6px 6px 14px}
  .search-box .btn{height:44px;padding:0 16px;font-size:15px}
  .section-head{margin-bottom:28px}
  .vcard{padding:22px}
  .step-card{padding-top:62px}
  .step-card.offset{margin-top:0}
  .faq-q{font-size:17px;padding:18px 18px}
  .faq-a{padding:0 18px 18px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
  .cta-block{padding:32px 20px}
  .cta-actions .btn{width:100%}
}
@media (max-width:1023px){
  .mobile-bar{display:flex}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}