/* roulang page: index */
:root{
  --brand-700:#067A5C;
  --brand-600:#0BA678;
  --brand-500:#12C08C;
  --brand-400:#4FD8AD;
  --lime-400:#A8E063;
  --accent-500:#FF7A3D;
  --accent-400:#FF9E5C;
  --volt-400:#FFD84D;
  --ink-900:#101A1E;
  --ink-700:#2C3A3F;
  --ink-500:#5A6B70;
  --line:#E2E8E4;
  --bg:#F5F8F6;
  --surface:#FFFFFF;
  --ok:#12A66A;
  --warn:#FFB020;
  --err:#E5484D;
  --grad-brand:linear-gradient(120deg,#0BA678 0%,#4FD8AD 46%,#A8E063 100%);
  --grad-cta:linear-gradient(100deg,#FF7A3D,#FF9E3D);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --sh-sm:0 1px 2px rgba(16,26,30,.06);
  --sh-md:0 8px 24px rgba(16,26,30,.08);
  --sh-lg:0 18px 48px rgba(11,120,90,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:96px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-weight:800;letter-spacing:-.01em;line-height:1.3;}
p{margin:0;}
a{color:var(--brand-700);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--brand-600);}
img{max-width:100%;display:block;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}

.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){
  .wrap{max-width:1280px;}
}

/* ============ 按钮族 ============ */
.btn-x{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-main{
  background:var(--grad-cta);
  color:#fff;
  box-shadow:0 8px 20px rgba(255,122,61,.28);
}
.btn-main:hover{color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px rgba(255,122,61,.34);filter:brightness(1.02);}
.btn-main:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(255,122,61,.24);}
.btn-ghost{
  background:transparent;
  color:var(--ink-700);
  border-color:var(--line);
}
.btn-ghost:hover{background:#EDF2EF;color:var(--ink-900);transform:translateY(-1px);}
.btn-line{
  background:var(--surface);
  color:var(--brand-700);
  border-color:var(--brand-400);
}
.btn-line:hover{background:rgba(79,216,173,.12);color:var(--brand-700);transform:translateY(-1px);}
.btn-x:focus-visible,.nav-link-x:focus-visible,.cmd-input:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(79,216,173,.5);
}
.btn-sm-x{height:40px;padding:0 18px;font-size:14px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:height .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:var(--sh-sm);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:72px;
  transition:height .22s var(--ease);
}
.site-header.is-scrolled .nav-inner{height:60px;}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink-900);
  font-weight:800;
  font-size:17px;
  letter-spacing:-.01em;
}
.logo:hover{color:var(--ink-900);}
.logo-mark{
  width:36px;
  height:36px;
  border-radius:11px;
  background:var(--grad-brand);
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:16px;
  box-shadow:0 6px 16px rgba(11,166,120,.28);
}
.logo-text small{
  display:block;
  font-size:11px;
  font-weight:600;
  color:var(--ink-500);
  letter-spacing:.08em;
  line-height:1.2;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
}
.nav-link-x{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 14px;
  border-radius:10px;
  font-size:14.5px;
  font-weight:600;
  color:var(--ink-700);
}
.nav-link-x:hover{color:var(--brand-700);background:rgba(79,216,173,.12);}
.nav-link-x.active{color:var(--brand-700);background:rgba(79,216,173,.14);}
.nav-link-x.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--grad-brand);
}
.nav-right{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.cmd-search{
  position:relative;
  display:flex;
  align-items:center;
  gap:8px;
  height:40px;
  min-width:220px;
  padding:0 12px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:var(--surface);
  color:var(--ink-500);
  font-size:14px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.cmd-search:focus-within{
  border-color:var(--brand-500);
  box-shadow:0 0 0 4px rgba(18,192,140,.16);
}
.cmd-input{
  flex:1;
  border:0;
  outline:none;
  background:transparent;
  color:var(--ink-900);
  font-size:14px;
  min-width:0;
}
.cmd-input::placeholder{color:#93A3A0;}
.kbd{
  display:inline-flex;
  align-items:center;
  height:22px;
  padding:0 7px;
  border-radius:6px;
  border:1px solid var(--line);
  background:#F2F6F4;
  font-size:12px;
  font-weight:600;
  color:var(--ink-500);
}
.nav-quick{
  font-size:14.5px;
  font-weight:600;
  color:var(--ink-700);
  padding:0 4px;
}
.nav-quick:hover{color:var(--brand-700);}
.menu-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--ink-900);
  font-size:17px;
  align-items:center;
  justify-content:center;
}
/* 搜索浮层 */
.search-pop{
  position:absolute;
  top:52px;
  right:0;
  width:340px;
  padding:16px;
  border-radius:var(--r-md);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--sh-lg);
  display:none;
}
.search-pop.show{display:block;}
.search-pop h4{font-size:14px;margin-bottom:10px;}
.search-pop .tagline{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.tag{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(79,216,173,.12);
  color:var(--brand-700);
  font-size:13px;
  font-weight:600;
}
.tag.volt{background:rgba(255,216,77,.28);color:#7A5A00;}
.tag.orange{background:rgba(255,122,61,.14);color:#B7470F;}

/* 抽屉 */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(16,26,30,.44);
  opacity:0;
  pointer-events:none;
  transition:opacity .22s var(--ease);
  z-index:1040;
}
.drawer-mask.show{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  width:min(340px,86vw);
  background:var(--surface);
  z-index:1050;
  padding:22px;
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  display:flex;
  flex-direction:column;
  gap:16px;
  overflow-y:auto;
}
.drawer.show{transform:translateX(0);}
.drawer-close{
  align-self:flex-end;
  width:38px;
  height:38px;
  border-radius:11px;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--ink-900);
}
.drawer .nav-link-x{height:46px;width:100%;justify-content:flex-start;}
.drawer .btn-x{width:100%;}

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  padding:64px 0 88px;
  background:
    radial-gradient(900px 420px at 88% -8%,rgba(168,224,99,.28),transparent 62%),
    radial-gradient(700px 360px at 0% 8%,rgba(18,192,140,.16),transparent 60%),
    var(--bg);
}
.hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:120px;
  background:linear-gradient(180deg,rgba(245,248,246,0),var(--bg) 68%);
  pointer-events:none;
}
.hero-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  position:relative;
  z-index:2;
}
.badge-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:20px;
}
.hero h1{
  font-size:44px;
  line-height:1.24;
  margin-bottom:18px;
}
.hero h1 .hl{
  background:var(--grad-brand);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:17px;
  color:var(--ink-500);
  max-width:560px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  font-size:13.5px;
  color:var(--ink-500);
}
.trust-row span{display:inline-flex;align-items:center;gap:7px;}
.trust-row i{color:var(--brand-600);}
.hero-visual{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-lg);
  border:1px solid var(--line);
  aspect-ratio:16/10;
  background:#0BA678;
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:var(--grad-brand);
  opacity:.22;
}
.float-card{
  position:absolute;
  right:18px;
  bottom:18px;
  z-index:3;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);
  border-radius:var(--r-md);
  padding:14px 18px;
  box-shadow:var(--sh-md);
  display:flex;
  gap:22px;
}
.float-card .fc-item strong{
  display:block;
  font-size:22px;
  font-weight:800;
  color:var(--brand-700);
  line-height:1.2;
}
.float-card .fc-item span{font-size:12.5px;color:var(--ink-500);}

/* ============ 通用板块 ============ */
.section{padding:var(--sec) 0;}
.section.tight{padding:64px 0;}
.section-alt{background:var(--surface);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(79,216,173,.14);
  color:var(--brand-700);
  font-size:13px;
  font-weight:600;
  margin-bottom:14px;
}
.sec-head h2{font-size:30px;margin-bottom:12px;}
.sec-head p{color:var(--ink-500);font-size:16px;}

/* 指标条 */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-top:-46px;
  position:relative;
  z-index:5;
}
.metric-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px;
  box-shadow:var(--sh-sm);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.metric-card:hover{box-shadow:var(--sh-md);transform:translateY(-3px);}
.metric-card strong{
  display:block;
  font-size:28px;
  font-weight:800;
  color:var(--ink-900);
  line-height:1.2;
  margin-bottom:6px;
}
.metric-card span{font-size:14px;color:var(--ink-500);}

/* 阶梯 */
.ladder{display:flex;flex-direction:column;gap:20px;}
.step-card{
  display:grid;
  grid-template-columns:104px 1.1fr 1.2fr 1.4fr;
  gap:24px;
  align-items:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px 28px;
  box-shadow:var(--sh-sm);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.step-card:hover{box-shadow:var(--sh-lg);transform:translateY(-3px);}
.step-card:nth-child(2){margin-left:32px;background:#FBFFFD;}
.step-card:nth-child(3){margin-left:64px;background:#F7FEFB;border-color:rgba(255,216,77,.9);}
.step-num{
  font-size:52px;
  font-weight:800;
  line-height:1;
  background:var(--grad-brand);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.step-card h3{font-size:19px;margin-bottom:6px;}
.step-card .step-metric{
  font-size:24px;
  font-weight:800;
  color:var(--brand-700);
}
.step-card .step-metric small{font-size:13px;font-weight:600;color:var(--ink-500);margin-left:4px;}
.step-card p{font-size:14.5px;color:var(--ink-500);}

/* 套餐对比 */
.plan-scroll{
  overflow-x:auto;
  padding-bottom:8px;
  -ms-overflow-style:none;
  scrollbar-width:none;
}
.plan-scroll::-webkit-scrollbar{display:none;}
.plans{
  display:grid;
  grid-template-columns:repeat(4,minmax(240px,1fr));
  gap:20px;
  min-width:1000px;
}
.plan-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px 24px;
  display:flex;
  flex-direction:column;
  gap:16px;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.plan-card:hover{box-shadow:var(--sh-md);transform:translateY(-4px);}
.plan-card.featured{
  margin-top:-8px;
  padding-top:34px;
  border-color:transparent;
  box-shadow:var(--sh-lg);
  background:var(--surface);
}
.plan-card.featured::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:6px;
  border-radius:var(--r-lg) var(--r-lg) 0 0;
  background:var(--grad-brand);
}
.plan-card h3{font-size:20px;}
.plan-card .plan-for{font-size:13.5px;color:var(--ink-500);}
.plan-card ul{display:flex;flex-direction:column;gap:10px;font-size:14.5px;}
.plan-card ul li{display:flex;gap:9px;align-items:flex-start;color:var(--ink-700);}
.plan-card ul li i{color:var(--brand-600);margin-top:5px;font-size:12px;}
.plan-card .plan-foot{margin-top:auto;}

/* 限时条 */
.flash{
  background:var(--grad-brand);
  border-radius:var(--r-lg);
  padding:32px 36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  color:#fff;
  box-shadow:var(--sh-lg);
}
.flash h2{color:#fff;font-size:26px;margin-bottom:8px;}
.flash p{color:rgba(255,255,255,.92);font-size:15px;}
.countdown{display:flex;gap:12px;margin-top:18px;}
.cd-block{
  min-width:64px;
  padding:10px 8px;
  border-radius:var(--r-sm);
  background:rgba(255,255,255,.2);
  border:1px solid rgba(255,255,255,.34);
  text-align:center;
}
.cd-block strong{
  display:block;
  font-size:24px;
  font-weight:800;
  line-height:1.1;
  color:#fff;
}
.cd-block span{font-size:12px;color:rgba(255,255,255,.88);}
.flash-actions{display:flex;gap:12px;flex-wrap:wrap;}
.flash .btn-ghost{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.5);}
.flash .btn-ghost:hover{background:rgba(255,255,255,.28);color:#fff;}

/* CMS 列表 */
.news-wrap{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:24px;
  padding:36px;
  box-shadow:var(--sh-sm);
}
.news-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:28px;
}
.news-head h2{font-size:28px;margin-bottom:8px;}
.news-head p{color:var(--ink-500);font-size:15px;}
.post-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.post-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--brand-400);}
.post-thumb{
  aspect-ratio:16/10;
  overflow:hidden;
  background:#E8F1ED;
}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .37s var(--ease);}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.post-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.post-body h3{font-size:17px;line-height:1.5;}
.post-body h3 a{color:var(--ink-900);}
.post-card:hover .post-body h3 a{color:var(--brand-600);}
.post-body p{font-size:14px;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--ink-500);
}
.post-foot .go{color:var(--brand-700);font-weight:600;}
.empty-state{
  text-align:center;
  padding:56px 20px;
  border:1px dashed var(--line);
  border-radius:var(--r-md);
  background:#FAFCFB;
}
.empty-state i{font-size:30px;color:var(--brand-400);margin-bottom:12px;display:block;}
.empty-state p{color:var(--ink-500);margin-bottom:16px;}

/* 表单 */
.form-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:32px;
  align-items:start;
}
.form-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--sh-sm);
}
.field{margin-bottom:18px;}
.field label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--ink-900);
  margin-bottom:8px;
}
.field .ctrl{
  width:100%;
  height:48px;
  padding:0 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#FCFEFD;
  color:var(--ink-900);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
textarea.ctrl{height:auto;padding:12px 14px;resize:vertical;min-height:112px;line-height:1.7;}
select.ctrl{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-500) 50%),linear-gradient(135deg,var(--ink-500) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field .ctrl:focus{
  outline:none;
  border-color:var(--brand-500);
  box-shadow:0 0 0 4px rgba(18,192,140,.16);
}
.field .hint{font-size:12.5px;color:var(--ink-500);margin-top:6px;}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--ink-500);}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand-600);}
.form-actions{display:flex;justify-content:flex-end;}
.form-actions .btn-x{width:200px;}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px;
  box-shadow:var(--sh-sm);
  margin-bottom:20px;
}
.side-card h3{font-size:18px;margin-bottom:14px;}
.side-steps{display:flex;flex-direction:column;gap:16px;}
.side-steps li{display:flex;gap:12px;font-size:14px;color:var(--ink-500);}
.side-steps .dot{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  background:rgba(79,216,173,.16);
  color:var(--brand-700);
  font-size:13px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.faq-item.open{box-shadow:var(--sh-md);border-color:var(--brand-400);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:14px;
  padding:20px 22px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16.5px;
  font-weight:700;
  color:var(--ink-900);
  cursor:pointer;
}
.faq-item.open .faq-q{color:var(--brand-700);}
.faq-q .fnum{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:9px;
  background:rgba(79,216,173,.16);
  color:var(--brand-700);
  font-size:13px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.faq-q .plus{
  margin-left:auto;
  flex:0 0 auto;
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  color:var(--brand-700);
  transition:transform .26s var(--ease);
}
.faq-item.open .plus{transform:rotate(45deg);}
.faq-a{
  position:relative;
  padding:0 22px 22px 64px;
  font-size:15px;
  color:var(--ink-500);
  display:none;
}
.faq-a::before{
  content:"";
  position:absolute;
  left:22px;
  top:4px;
  bottom:22px;
  width:3px;
  border-radius:3px;
  background:var(--grad-brand);
}
.faq-item.open .faq-a{display:block;}

/* CTA */
.cta-band{
  background:var(--ink-900);
  border-radius:24px;
  padding:48px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  color:#fff;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-80px;top:-80px;
  width:320px;height:320px;
  border-radius:50%;
  background:var(--grad-brand);
  opacity:.28;
  filter:blur(10px);
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px;position:relative;z-index:2;}
.cta-band p{color:rgba(255,255,255,.76);font-size:15px;position:relative;z-index:2;max-width:620px;}
.cta-band .flash-actions{position:relative;z-index:2;}

/* 页脚 */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.7);
  padding:64px 0 26px;
  margin-top:var(--sec);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:36px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.site-footer .logo{color:#fff;}
.site-footer .logo:hover{color:#fff;}
.site-footer .logo-text small{color:rgba(255,255,255,.55);}
.site-footer h4{
  color:#fff;
  font-size:15px;
  margin-bottom:16px;
  font-weight:700;
}
.footer-links{display:flex;flex-direction:column;gap:10px;font-size:14px;}
.footer-links a{color:rgba(255,255,255,.7);}
.footer-links a:hover{color:var(--brand-400);}
.footer-about{
  font-size:14px;
  color:rgba(255,255,255,.6);
  margin-top:16px;
  max-width:320px;
  line-height:1.8;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:22px;
  font-size:13px;
  color:rgba(255,255,255,.5);
  flex-wrap:wrap;
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--brand-400);}

/* 移动端底栏 */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1020;
  height:56px;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
  padding:0 12px calc(0px + env(safe-area-inset-bottom));
  align-items:center;
  gap:10px;
}
.mobile-bar .btn-x{flex:1;height:42px;font-size:14px;}

/* 响应式 */
@media (max-width:1200px){
  :root{--sec:84px;}
  .plans{grid-template-columns:repeat(4,minmax(220px,1fr));min-width:940px;}
}
@media (max-width:991px){
  :root{--sec:72px;}
  .nav-menu,.cmd-search,.nav-quick{display:none;}
  .menu-toggle{display:inline-flex;}
  .hero{padding:44px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:36px;}
  .metrics{grid-template-columns:repeat(2,1fr);margin-top:-30px;}
  .step-card{grid-template-columns:72px 1fr;row-gap:12px;}
  .step-card:nth-child(2),.step-card:nth-child(3){margin-left:0;}
  .step-card p{grid-column:1 / -1;}
  .form-grid{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .flash{flex-direction:column;align-items:flex-start;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  .wrap{padding:0 18px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:15.5px;}
  .sec-head h2{font-size:24px;}
  .metrics{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:1fr;}
  .news-wrap{padding:22px;}
  .news-head{flex-direction:column;align-items:flex-start;}
  .form-panel{padding:22px;}
  .form-actions .btn-x{width:100%;}
  .mobile-bar{display:flex;}
  body{padding-bottom:56px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .countdown{flex-wrap:wrap;}
  .faq-a{padding-left:22px;}
  .faq-a::before{display:none;}
  .cta-band h2{font-size:22px;}
}
@media (max-width:520px){
  .hero h1{font-size:26px;}
  .badge-row .tag:last-child{display:none;}
  .trust-row{gap:14px;font-size:13px;}
  .float-card{gap:14px;padding:12px 14px;}
  .float-card .fc-item strong{font-size:18px;}
  .step-card{padding:20px;}
  .step-num{font-size:38px;}
}

/* roulang page: article */
:root{
  --brand-700:#067A5C;--brand-600:#0BA678;--brand-500:#12C08C;--brand-400:#4FD8AD;--lime-400:#A8E063;
  --accent-500:#FF7A3D;--accent-400:#FF9E5C;--volt-400:#FFD84D;
  --ink-900:#101A1E;--ink-700:#2C3A3F;--ink-500:#5A6B70;--line:#E2E8E4;--bg:#F5F8F6;--surface:#FFFFFF;
  --ok:#12A66A;--warn:#FFB020;--err:#E5484D;
  --grad-brand:linear-gradient(120deg,#0BA678 0%,#4FD8AD 46%,#A8E063 100%);
  --grad-cta:linear-gradient(100deg,#FF7A3D,#FF9E3D);
  --r-lg:20px;--r-md:16px;--r-sm:12px;--r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,26,30,.06);
  --sh-md:0 8px 24px rgba(16,26,30,.08);
  --sh-lg:0 18px 48px rgba(11,120,90,.14);
  --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;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink-700);background:var(--bg);
  -webkit-font-smoothing:antialiased;font-variant-numeric:tabular-nums;
}
a{color:var(--brand-600);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--brand-700);}
img{max-width:100%;display:block;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-0.01em;}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(79,216,173,.45);border-radius:var(--r-sm);}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.btn-x{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),filter .22s var(--ease);}
.btn-x:hover{transform:translateY(-1px);box-shadow:var(--sh-md);filter:brightness(1.02);}
.btn-x:active{transform:translateY(1px);box-shadow:var(--sh-sm);}
.btn-primary-x{background:var(--grad-cta);color:#fff;}
.btn-primary-x:hover{color:#fff;}
.btn-ghost-x{border-color:var(--brand-600);color:var(--brand-700);background:#fff;}
.btn-ghost-x:hover{background:rgba(18,192,140,.08);color:var(--brand-700);}
.btn-plain-x{color:var(--ink-700);background:transparent;}
.btn-plain-x:hover{background:#EDF3EF;color:var(--ink-900);}
.btn-sm-x{height:40px;padding:0 16px;font-size:14px;}
.tag-x{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;color:var(--brand-700);background:rgba(79,216,173,.16);}
.tag-x.is-volt{background:rgba(255,216,77,.30);color:#7A5A00;}
.section{padding:var(--sec) 0;}
.section-sm{padding:64px 0;}
.sec-head{max-width:720px;margin-bottom:40px;}
.sec-head h2{font-size:30px;font-weight:800;line-height:1.35;}
.sec-head p{margin-top:12px;color:var(--ink-500);font-size:16px;}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(255,255,255,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(16,26,30,.05);}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .22s var(--ease);}
.site-header.scrolled .nav-inner{height:60px;}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.logo-mark{width:40px;height:40px;border-radius:12px;background:var(--grad-brand);display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:18px;box-shadow:var(--sh-sm);}
.logo-text{display:flex;flex-direction:column;font-size:16px;font-weight:800;color:var(--ink-900);line-height:1.2;}
.logo-text small{font-size:11px;font-weight:500;color:var(--ink-500);letter-spacing:.02em;}
.nav-menu{display:flex;align-items:center;gap:4px；margin-left:8px;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link-x{position:relative;padding:10px 14px;border-radius:10px;font-size:15px;font-weight:600;color:var(--ink-700);white-space:nowrap;}
.nav-link-x:hover{background:rgba(18,192,140,.08);color:var(--brand-700);}
.nav-link-x.active{color:var(--brand-700);background:rgba(18,192,140,.10);}
.nav-link-x.active::after{content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;background:var(--grad-brand);}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.cmd-search{position:relative;}
.cmd-search-btn{display:flex;align-items:center;gap:10px;height:40px;min-width:220px;padding:0 12px;border:1px solid var(--line);
  border-radius:var(--r-sm);background:#fff;color:var(--ink-500);font-size:14px;cursor:text;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);}
.cmd-search-btn:hover{border-color:var(--brand-400);box-shadow:var(--sh-sm);}
.cmd-search-btn i{color:var(--brand-600);}
.kbd{margin-left:auto;font-size:11px;font-weight:600;color:var(--ink-500);background:#F1F5F2;border:1px solid var(--line);
  border-radius:6px;padding:2px 6px;line-height:1.2;}
.search-pop{position:absolute;top:52px;right:0;width:380px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-lg);padding:16px;opacity:0;visibility:hidden;transform:translateY(-6px);transition:all .22s var(--ease);}
.search-pop.open{opacity:1;visibility:visible;transform:translateY(0);}
.search-pop input{width:100%;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);padding:0 14px;font-size:14px;outline:none;}
.search-pop input:focus{border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(18,192,140,.16);}
.search-hot{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px;}
.nav-quick{font-size:14px;font-weight:600;color:var(--ink-700);padding:8px 10px;border-radius:10px;}
.nav-quick:hover{background:#EDF3EF;}
.nav-cta{height:40px;padding:0 18px;font-size:14px;}
.hamburger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;color:var(--ink-700);
  align-items:center;justify-content:center;font-size:17px;cursor:pointer;}
.drawer{position:fixed;inset:0 0 0 auto;width:min(88vw,340px);background:#fff;z-index:1060;transform:translateX(100%);
  transition:transform .28s var(--ease);box-shadow:var(--sh-lg);padding:20px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;}
.drawer.open{transform:translateX(0);}
.drawer-mask{position:fixed;inset:0;background:rgba(16,26,30,.42);z-index:1055;opacity:0;visibility:hidden;transition:opacity .28s var(--ease);}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer a.drawer-link{padding:13px 14px;border-radius:var(--r-sm);font-weight:600;color:var(--ink-700);font-size:15px;}
.drawer a.drawer-link:hover,.drawer a.drawer-link.active{background:rgba(18,192,140,.10);color:var(--brand-700);}
.drawer .btn-x{width:100%;}

/* ---------- article hero ---------- */
.article-hero{position:relative;background:linear-gradient(180deg,#FFFFFF 0%,#F0F8F4 100%);border-bottom:1px solid var(--line);overflow:hidden;}
.article-hero::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);}
.article-hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(79,216,173,.28),rgba(79,216,173,0) 70%);pointer-events:none;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);padding:22px 0 8px;}
.crumb a{color:var(--ink-500);font-weight:500;}
.crumb a:hover{color:var(--brand-700);}
.crumb .current{color:var(--ink-900);font-weight:600;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head{position:relative;z-index:2;padding:12px 0 44px;max-width:860px;}
.article-head h1{font-size:40px;line-height:1.28;font-weight:800;margin-top:16px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:20px;font-size:14px;color:var(--ink-500);}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--brand-500);}

/* ---------- article body ---------- */
.article-main{padding:56px 0 80px;}
.article-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-sm);
  padding:48px 56px;max-width:860px;margin:0 auto;}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-700);}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{font-size:25px;font-weight:800;line-height:1.45;margin:40px 0 16px;padding-left:16px;position:relative;}
.article-body h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:3px;background:var(--grad-brand);}
.article-body h3{font-size:19px;font-weight:700;margin:28px 0 12px;color:var(--ink-900);}
.article-body h4{font-size:17px;font-weight:700;margin:22px 0 10px;color:var(--ink-900);}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 1.2em;}
.article-body li{margin-bottom:8px;}
.article-body li::marker{color:var(--brand-500);}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-700);}
.article-body strong{color:var(--ink-900);font-weight:700;}
.article-body blockquote{margin:26px 0;padding:18px 22px;background:#F0F8F4;border-left:4px solid var(--brand-400);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-700);}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-md);border:1px solid var(--line);margin:22px 0;cursor:zoom-in;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:separate;border-spacing:0;margin:24px 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;}
.article-body thead th{background:#F0F8F4;color:var(--ink-900);font-weight:700;text-align:left;}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);}
.article-body tbody tr:last-child td{border-bottom:none;}
.article-body tbody tr:hover{background:#FAFCFB;}
.article-body code{background:#F1F5F2;border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:14px;color:var(--brand-700);}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}
.article-foot{max-width:860px;margin:28px auto 0;display:flex;flex-wrap:wrap;align-items:center;gap:12px;justify-content:space-between;}
.article-tags{display:flex;flex-wrap:wrap;gap:8px;}
.empty-state{text-align:center;padding:56px 24px;}
.empty-state .ico{width:72px;height:72px;border-radius:50%;background:rgba(79,216,173,.18);display:flex;align-items:center;justify-content:center;
  margin:0 auto 20px;font-size:28px;color:var(--brand-700);}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--ink-500);margin-bottom:22px;}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:rgba(79,216,173,.6);}
.post-card .thumb{aspect-ratio:16/10;width:100%;object-fit:cover;border-bottom:1px solid var(--line);}
.post-card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.post-card h3{font-size:18px;font-weight:700;line-height:1.5;}
.post-card:hover h3{color:var(--brand-600);}
.post-card p{font-size:14px;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-500);}
.post-card-meta i{color:var(--brand-500);}

/* ---------- cta ---------- */
.cta-band{position:relative;border-radius:24px;overflow:hidden;padding:56px;color:#fff;
  background-image:linear-gradient(120deg,rgba(6,122,92,.92) 0%,rgba(11,166,120,.86) 52%,rgba(168,224,99,.72) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;box-shadow:var(--sh-lg);}
.cta-band h2{color:#fff;font-size:30px;font-weight:800;line-height:1.35;}
.cta-band p{color:rgba(255,255,255,.9);margin-top:14px;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.cta-band .btn-ghost-x{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.6);color:#fff;}
.cta-band .btn-ghost-x:hover{background:rgba(255,255,255,.24);color:#fff;}
.cta-facts{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.cta-facts span{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);font-size:13px;font-weight:600;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.78);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.site-footer .logo-text{color:#fff;}
.site-footer .logo-text small{color:rgba(255,255,255,.55);}
.footer-about{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-links a:hover{color:var(--brand-400);}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);}

/* ---------- mobile bar ---------- */
.mobile-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:1040;gap:12px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-top:1px solid var(--line);}
.mobile-bar .btn-x{flex:1;height:48px;}

@media (max-width:1199px){
  :root{--sec:80px;}
  .cmd-search-btn{min-width:170px;}
}
@media (max-width:991px){
  :root{--sec:72px;}
  .nav-menu,.cmd-search,.nav-quick{display:none;}
  .hamburger{display:flex;}
  .article-head h1{font-size:32px;}
  .article-card{padding:36px 28px;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:40px 32px;}
  .cta-band h2{font-size:26px;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  .wrap{padding:0 16px;}
  .article-head h1{font-size:26px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:21px;}
  .article-card{padding:26px 18px;border-radius:var(--r-md);}
  .related-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 22px;border-radius:18px;}
  .cta-band h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;}
  .mobile-bar{display:flex;}
  body{padding-bottom:76px;}
  .crumb .current{max-width:220px;}
  .search-pop{width:min(92vw,360px);right:-8px;}
}
@media (max-width:575px){
  .article-head h1{font-size:23px;}
  .article-meta{gap:8px 16px;font-size:13px;}
  .cta-actions .btn-x{width:100%;}
}

/* roulang page: category1 */
:root{
  --brand-700:#067A5C;
  --brand-600:#0BA678;
  --brand-500:#12C08C;
  --brand-400:#4FD8AD;
  --lime-400:#A8E063;
  --accent-500:#FF7A3D;
  --accent-400:#FF9E5C;
  --volt-400:#FFD84D;
  --ink-900:#101A1E;
  --ink-700:#2C3A3F;
  --ink-500:#5A6B70;
  --line:#E2E8E4;
  --bg:#F5F8F6;
  --surface:#FFFFFF;
  --ok:#12A66A;
  --warn:#FFB020;
  --err:#E5484D;
  --grad-brand:linear-gradient(120deg,#0BA678 0%,#4FD8AD 46%,#A8E063 100%);
  --grad-cta:linear-gradient(100deg,#FF7A3D,#FF9E3D);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --sh-sm:0 1px 2px rgba(16,26,30,.06);
  --sh-md:0 8px 24px rgba(16,26,30,.08);
  --sh-lg:0 18px 48px rgba(11,120,90,.14);
  --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;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease)}
a:hover{color:var(--brand-500)}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:800;letter-spacing:-.01em;line-height:1.3}
h1{font-size:40px}
h2{font-size:30px}
h3{font-size:22px}
h4{font-size:18px}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(79,216,173,.55);outline-offset:2px;border-radius:8px}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
@media(min-width:1400px){.wrap{max-width:1280px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--grad-cta);color:#fff;box-shadow:0 8px 20px rgba(255,122,61,.28)}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px rgba(255,122,61,.34);filter:brightness(1.02)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(255,122,61,.24)}
.btn-outline{border:1.5px solid var(--brand-600);color:var(--brand-700);background:transparent}
.btn-outline:hover{background:rgba(79,216,173,.12);color:var(--brand-700);transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-ghost{color:var(--ink-700);background:transparent}
.btn-ghost:hover{background:rgba(16,26,30,.05);color:var(--ink-900)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-sm)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:height .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-sm)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .22s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);flex:none}
.logo:hover{color:var(--ink-900)}
.logo-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad-brand);
  display:grid;place-items:center;color:#fff;font-size:17px;box-shadow:var(--sh-sm);flex:none;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;font-weight:800;font-size:16px;letter-spacing:-.01em}
.logo-text small{font-size:11px;font-weight:500;color:var(--ink-500);letter-spacing:.02em}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link-x{
  position:relative;padding:9px 14px;border-radius:10px;
  font-size:14.5px;font-weight:600;color:var(--ink-700);
}
.nav-link-x:hover{background:rgba(18,192,140,.09);color:var(--brand-700)}
.nav-link-x.active{color:var(--brand-700);background:rgba(18,192,140,.10)}
.nav-link-x.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--grad-brand);
}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.command-search{position:relative;display:flex;align-items:center;gap:8px;height:40px;padding:0 10px 0 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);transition:border-color .22s var(--ease),box-shadow .22s var(--ease);}
.command-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(18,192,140,.16)}
.command-search i{color:var(--ink-500);font-size:13px}
.command-search input{border:0;outline:none;background:transparent;min-width:220px;font-size:14px;color:var(--ink-700)}
.command-search input::placeholder{color:#93A29C}
.command-search kbd{
  font-family:inherit;font-size:12px;color:var(--ink-500);background:var(--bg);
  border:1px solid var(--line);border-radius:8px;padding:1px 8px;
}
.search-panel{
  position:absolute;top:48px;left:0;right:0;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-lg);
  padding:10px;display:none;
}
.search-panel.open{display:block}
.search-panel a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;font-size:14px;color:var(--ink-700)}
.search-panel a:hover{background:var(--bg);color:var(--brand-700)}
.search-panel span.hint{display:block;padding:6px 12px 8px;font-size:12.5px;color:var(--ink-500)}
.quick-link{font-size:14px;font-weight:600;color:var(--ink-700)}
.quick-link:hover{color:var(--brand-700)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--surface);color:var(--ink-900);font-size:17px;
}
.nav-drawer{
  position:fixed;inset:0 0 0 auto;width:min(86vw,340px);background:var(--surface);
  transform:translateX(102%);transition:transform .28s var(--ease);z-index:120;
  padding:22px;display:flex;flex-direction:column;gap:6px;box-shadow:var(--sh-lg);overflow-y:auto;
}
.nav-drawer.open{transform:translateX(0)}
.nav-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--surface)}
.nav-drawer a.d-link{
  padding:13px 14px;border-radius:var(--r-sm);font-size:15px;font-weight:600;color:var(--ink-700);
}
.nav-drawer a.d-link:hover{background:var(--bg)}
.nav-drawer a.d-link.active{background:rgba(18,192,140,.10);color:var(--brand-700)}
.nav-drawer .btn{width:100%;margin-top:14px}
.drawer-mask{position:fixed;inset:0;background:rgba(16,26,30,.42);opacity:0;visibility:hidden;transition:.28s var(--ease);z-index:110}
.drawer-mask.open{opacity:1;visibility:visible}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-500)}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--brand-700)}
.crumb i{font-size:11px;color:#B7C4BE}
.crumb .now{color:var(--brand-700);font-weight:600}

/* ---------- Hero ---------- */
.hero{position:relative;padding:34px 0 76px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:-140px -10% auto -10%;height:520px;
  background:radial-gradient(60% 70% at 18% 30%,rgba(79,216,173,.22),transparent 68%),
             radial-gradient(50% 60% at 88% 10%,rgba(168,224,99,.22),transparent 70%);
  z-index:0;pointer-events:none;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:center}
.hero-copy{grid-column:span 6}
.hero-media{grid-column:span 6}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--brand-700);background:rgba(79,216,173,.14);
}
.chip i{font-size:12px}
.chip-volt{color:#6A4A00;background:rgba(255,216,77,.32)}
.chip-line{background:var(--surface);border:1px solid var(--line);color:var(--ink-700)}
.hero h1{font-size:44px;line-height:1.24;margin-bottom:16px}
.hero h1 .hl{
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:18px;font-weight:600;color:var(--ink-900);margin-bottom:12px}
.hero-text{font-size:16px;color:var(--ink-700);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 22px}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;font-size:13.5px;color:var(--ink-500)}
.trust-row span{display:inline-flex;align-items:center;gap:7px}
.trust-row i{color:var(--brand-600)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid var(--line);box-shadow:var(--sh-lg);
}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);
  background:var(--grad-brand);opacity:.20;pointer-events:none;
}
.hero-float{
  position:absolute;right:-6px;bottom:-22px;z-index:2;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-md);padding:14px 18px;min-width:190px;
}
.hero-float .num{font-size:26px;font-weight:800;color:var(--brand-700);line-height:1.1}
.hero-float .lbl{font-size:13px;color:var(--ink-500);margin-top:4px}
.hero-float .divline{height:1px;background:var(--line);margin:10px 0}

/* ---------- 通用板块 ---------- */
section{position:relative}
.sec{padding:var(--sec) 0}
.sec-tight{padding:64px 0}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--brand-700);background:rgba(79,216,173,.14);margin-bottom:14px;
}
.sec-head h2{margin-bottom:12px}
.sec-head p{color:var(--ink-500);font-size:15.5px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- Bento 卡阵 ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.bcard{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.bcard:hover{transform:translateY(-4px);box-shadow:var(--sh-md)}
.bcard .bimg{position:relative;overflow:hidden}
.bcard .bimg img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease)}
.bcard:hover .bimg img{transform:scale(1.04)}
.bcard .bimg::after{content:"";position:absolute;inset:0;background:var(--grad-brand);opacity:.14}
.bcard .bbody{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.bcard h3{font-size:20px}
.bcard p{font-size:14.5px;color:var(--ink-500);margin:0}
.bcard.main{grid-column:span 7}
.bcard.side{grid-column:span 5}
.bento-row2{grid-column:span 12;display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.bcard.big-img img{aspect-ratio:16/9}
.badge-strip{
  grid-column:span 12;display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 20px;box-shadow:var(--sh-sm);
}
.badge-strip .b-label{font-size:13.5px;font-weight:600;color:var(--ink-900);margin-right:6px}
.mini-list{display:flex;flex-direction:column;gap:9px;margin-top:4px}
.mini-list li{display:flex;gap:9px;font-size:14.5px;color:var(--ink-700)}
.mini-list i{color:var(--brand-600);font-size:13px;margin-top:5px}

/* ---------- 指标条 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 22px 22px;box-shadow:var(--sh-sm);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.metric::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--grad-brand)}
.metric:hover{transform:translateY(-4px);box-shadow:var(--sh-md)}
.metric .m-num{font-size:32px;font-weight:800;color:var(--brand-700);line-height:1.1}
.metric .m-num small{font-size:15px;font-weight:600;color:var(--ink-500);margin-left:4px}
.metric .m-lbl{font-size:14.5px;font-weight:600;color:var(--ink-900);margin-top:8px}
.metric .m-desc{font-size:13.5px;color:var(--ink-500);margin-top:4px}

/* ---------- 要点 + 步骤 ---------- */
.points-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.point{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-sm);border-left:3px solid transparent;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.point:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-left-color:var(--brand-500)}
.point .p-idx{
  font-size:14px;font-weight:800;color:var(--brand-700);background:rgba(79,216,173,.14);
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;margin-bottom:14px;
}
.point h3{font-size:18px;margin-bottom:8px}
.point p{font-size:14.5px;color:var(--ink-500);margin:0}

.steps{position:relative;margin-top:52px}
.steps::before{content:"";position:absolute;left:19px;top:12px;bottom:12px;width:2px;background:var(--line)}
.step{position:relative;display:flex;gap:22px;padding:0 0 26px}
.step:last-child{padding-bottom:0}
.step .s-dot{
  position:relative;z-index:1;flex:none;width:40px;height:40px;border-radius:12px;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--sh-sm);
  display:grid;place-items:center;font-weight:800;font-size:15px;color:var(--brand-700);
}
.step.done .s-dot{background:var(--grad-brand);color:#fff;border-color:transparent}
.step .s-body{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:18px 22px;flex:1;box-shadow:var(--sh-sm);transition:box-shadow .22s var(--ease),transform .22s var(--ease)}
.step:hover .s-body{box-shadow:var(--sh-md);transform:translateY(-2px)}
.step h4{font-size:17px;margin-bottom:6px}
.step p{font-size:14.5px;color:var(--ink-500);margin:0}

/* ---------- 咨询表单 ---------- */
.consult{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.consult-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;box-shadow:var(--sh-md)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:8px}
.field .req{color:var(--err);margin-left:3px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:var(--surface);font-size:15px;color:var(--ink-700);transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.field textarea{height:118px;padding:12px 14px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-500) 50%),linear-gradient(135deg,var(--ink-500) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(18,192,140,.16);
}
.field .help{font-size:13px;color:var(--ink-500);margin-top:6px}
.form-actions{display:flex;justify-content:flex-end;margin-top:6px}
.form-actions .btn{width:200px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--sh-sm);margin-bottom:20px}
.side-card h4{font-size:17px;margin-bottom:14px}
.side-steps{display:flex;flex-direction:column;gap:14px}
.side-steps li{display:flex;gap:12px;font-size:14.5px;color:var(--ink-700)}
.side-steps .n{
  flex:none;width:26px;height:26px;border-radius:999px;background:rgba(79,216,173,.16);
  color:var(--brand-700);font-size:13px;font-weight:700;display:grid;place-items:center;margin-top:2px;
}
.side-note{font-size:13.5px;color:var(--ink-500);line-height:1.8}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 26px;margin-top:0}
.site-footer .logo{color:#fff;margin-bottom:16px}
.site-footer .logo:hover{color:#fff}
.site-footer .logo-text small{color:rgba(255,255,255,.55)}
.site-footer .logo-mark{box-shadow:none}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em}
.footer-about{font-size:14px;color:rgba(255,255,255,.6);line-height:1.85;max-width:340px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover{color:var(--brand-400)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 移动端固定操作条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  gap:10px;
}
.mobile-bar .btn{flex:1;height:40px;font-size:14px}

/* ---------- 响应式 ---------- */
@media(max-width:1200px){
  :root{--sec:84px}
  .hero h1{font-size:38px}
  .command-search input{min-width:160px}
}
@media(max-width:992px){
  :root{--sec:72px}
  .nav-menu,.command-search,.quick-link,.header-cta{display:none}
  .nav-toggle{display:grid;place-items:center}
  .hero{padding:26px 0 64px}
  .hero-grid{gap:24px}
  .hero-copy,.hero-media{grid-column:span 12}
  .hero-media{order:2}
  .hero h1{font-size:34px}
  .bcard.main,.bcard.side{grid-column:span 12}
  .bento-row2{grid-template-columns:1fr}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .points-grid{grid-template-columns:repeat(2,1fr)}
  .consult-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media(max-width:768px){
  :root{--sec:56px}
  h1{font-size:30px}
  h2{font-size:24px}
  .wrap{padding:0 18px}
  .hero h1{font-size:29px}
  .hero-sub{font-size:16.5px}
  .hero-float{position:static;margin-top:16px;min-width:0}
  .hero-media::after{border-radius:var(--r-lg)}
  .metrics{grid-template-columns:1fr;gap:14px}
  .points-grid{grid-template-columns:1fr}
  .sec-head{margin-bottom:28px}
  .form-card{padding:22px}
  .form-actions .btn{width:100%}
  .mobile-bar{display:flex}
  body{padding-bottom:64px}
}
@media(max-width:576px){
  .logo-text small{display:none}
  .badge-strip{padding:14px}
  .hero-actions .btn{width:100%}
  .trust-row{gap:14px;font-size:13px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px}
}

/* roulang page: category2 */
:root{
  --brand-700:#067A5C;--brand-600:#0BA678;--brand-500:#12C08C;--brand-400:#4FD8AD;--lime-400:#A8E063;
  --accent-500:#FF7A3D;--accent-400:#FF9E5C;--volt-400:#FFD84D;
  --ink-900:#101A1E;--ink-700:#2C3A3F;--ink-500:#5A6B70;--line:#E2E8E4;--bg:#F5F8F6;--surface:#FFFFFF;
  --grad-brand:linear-gradient(120deg,#0BA678 0%,#4FD8AD 46%,#A8E063 100%);
  --grad-cta:linear-gradient(100deg,#FF7A3D,#FF9E3D);
  --r-lg:20px;--r-md:16px;--r-sm:12px;--r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,26,30,.06);
  --sh-md:0 8px 24px rgba(16,26,30,.08);
  --sh-lg:0 18px 48px rgba(11,120,90,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink-700);background:var(--bg);
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease),background .2s var(--ease);}
a:hover{color:var(--brand-600);}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-0.01em;font-weight:800;line-height:1.28;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(79,216,173,.55);outline-offset:2px;border-radius:8px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media(min-width:1400px){.wrap{max-width:1280px;}}
.num{font-variant-numeric:tabular-nums;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-sm);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s var(--ease);}
.site-header.scrolled .header-inner{height:60px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;font-size:15px;box-shadow:var(--sh-md);flex-shrink:0;
}
.logo-text{display:flex;flex-direction:column;font-size:16px;font-weight:800;color:var(--ink-900);line-height:1.2;}
.logo-text small{font-size:11px;font-weight:500;color:var(--ink-500);letter-spacing:0;margin-top:2px;}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link-x{
  position:relative;padding:8px 14px;border-radius:10px;font-size:15px;font-weight:600;
  color:var(--ink-700);white-space:nowrap;
}
.nav-link-x:hover{background:rgba(18,192,140,.08);color:var(--brand-700);}
.nav-link-x.active{color:var(--brand-700);background:rgba(18,192,140,.10);}
.nav-link-x.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--grad-brand);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.command-search{
  position:relative;display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;
  min-width:240px;background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.command-search i{color:var(--ink-500);font-size:13px;}
.command-search input{
  flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px;color:var(--ink-900);
  font-family:inherit;
}
.command-search input::placeholder{color:#9AA8A3;}
.command-search:focus-within,.command-search.open{border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(18,192,140,.14);}
.kbd{
  display:inline-grid;place-items:center;min-width:22px;height:22px;padding:0 5px;
  font-size:11px;font-weight:700;color:var(--ink-500);background:#F0F4F1;
  border:1px solid var(--line);border-radius:6px;
}
.search-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-lg);
  padding:14px 16px 16px;display:none;z-index:60;
}
.command-search.open .search-panel{display:block;}
.panel-title{font-size:12px;font-weight:700;color:var(--ink-500);margin-bottom:10px;letter-spacing:.04em;}
.panel-tags{display:flex;flex-wrap:wrap;gap:8px;}
.panel-tags a{
  font-size:13px;font-weight:600;color:var(--brand-700);background:rgba(79,216,173,.14);
  padding:5px 12px;border-radius:var(--r-pill);
}
.panel-tags a:hover{background:rgba(79,216,173,.26);color:var(--brand-700);}
.quick-link{font-size:14px;font-weight:600;color:var(--ink-700);padding:6px 4px;white-space:nowrap;}
.quick-link:hover{color:var(--brand-700);}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:#fff;color:var(--ink-700);font-size:16px;cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.menu-toggle:hover{background:#F0F4F1;border-color:var(--brand-400);color:var(--brand-700);}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;padding:16px 24px 22px;
  box-shadow:var(--sh-md);
}
.mobile-drawer.open{display:block;}
.drawer-link{
  display:block;padding:13px 14px;border-radius:var(--r-sm);font-size:15px;font-weight:600;
  color:var(--ink-700);margin-bottom:6px;background:#F7FAF8;
}
.drawer-link:hover{background:rgba(18,192,140,.10);color:var(--brand-700);}
.drawer-link.active{background:rgba(18,192,140,.12);color:var(--brand-700);}
.mobile-drawer .btn-main{width:100%;justify-content:center;margin-top:10px;}

/* ============ 按钮 ============ */
.btn-main,.btn-line,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;
  border:0;cursor:pointer;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),filter .22s var(--ease);
}
.btn-main{background:var(--grad-cta);color:#fff;box-shadow:0 8px 20px rgba(255,122,61,.28);}
.btn-main:hover{color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px rgba(255,122,61,.34);filter:brightness(1.03);}
.btn-main:active{transform:translateY(1px);box-shadow:0 6px 14px rgba(255,122,61,.22);}
.btn-line{background:#fff;border:1px solid var(--brand-600);color:var(--brand-700);}
.btn-line:hover{background:rgba(18,192,140,.08);color:var(--brand-700);transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-ghost{background:transparent;color:var(--ink-700);border:1px solid var(--line);}
.btn-ghost:hover{background:#fff;border-color:var(--brand-400);color:var(--brand-700);transform:translateY(-1px);box-shadow:var(--sh-sm);}
.btn-sm-x{height:40px;padding:0 18px;font-size:14px;}
.btn-lg-x{height:54px;padding:0 30px;font-size:16px;}

/* ============ 面包屑 ============ */
.crumb-bar{padding:22px 0 0;background:var(--bg);}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);flex-wrap:wrap;}
.crumb a{color:var(--ink-500);font-weight:600;}
.crumb a:hover{color:var(--brand-700);}
.crumb .sep{color:#C3CFCA;}
.crumb .now{color:var(--brand-700);font-weight:700;}

/* ============ Hero ============ */
.page-hero{position:relative;padding:34px 0 84px;overflow:hidden;}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(120deg,rgba(11,166,120,.10) 0%,rgba(168,224,99,.14) 100%);
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.04fr .96fr;gap:52px;align-items:center;}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;}
.badge-x{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(79,216,173,.16);color:var(--brand-700);font-size:13px;font-weight:600;
}
.badge-x i{font-size:12px;}
.badge-x.volt{background:rgba(255,216,77,.28);color:#8A6200;}
.page-hero h1{font-size:44px;line-height:1.18;margin-bottom:14px;}
.hero-sub{
  font-size:17px;font-weight:700;color:var(--brand-700);margin-bottom:14px;
  display:inline-flex;align-items:center;gap:8px;
}
.hero-sub::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--grad-brand);display:inline-block;}
.hero-lead{font-size:16px;color:var(--ink-500);line-height:1.85;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 24px;}
.trust-row{display:flex;flex-wrap:wrap;gap:20px;}
.trust-row li{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-500);font-weight:600;}
.trust-row i{color:var(--brand-500);font-size:12px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid var(--line);box-shadow:var(--sh-lg);
}
.hero-media::after{
  content:"";position:absolute;left:0;right:0;top:0;bottom:0;border-radius:var(--r-lg);
  background:var(--grad-brand);opacity:.2;pointer-events:none;
}
.float-card{
  position:absolute;right:-14px;bottom:-22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-lg);padding:14px 20px;display:flex;gap:22px;
}
.float-card .fc-item{display:flex;flex-direction:column;}
.float-card .fc-num{font-size:20px;font-weight:800;color:var(--brand-700);line-height:1.3;}
.float-card .fc-label{font-size:12px;color:var(--ink-500);font-weight:600;}

/* ============ 指标条 ============ */
.metrics{margin-top:-42px;position:relative;z-index:5;}
.metrics-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-md);display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;
}
.metric{padding:24px 26px;border-right:1px solid var(--line);}
.metric:last-child{border-right:0;}
.metric-top{display:flex;align-items:baseline;gap:4px;}
.metric-num{font-size:28px;font-weight:800;color:var(--ink-900);line-height:1.1;}
.metric-unit{font-size:13px;font-weight:700;color:var(--brand-600);}
.metric p{font-size:13px;color:var(--ink-500);margin-top:6px;font-weight:600;}

/* ============ 通用板块 ============ */
.section{padding:var(--sec) 0;}
.section.alt{background:var(--surface);}
.section-head{max-width:720px;margin-bottom:46px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand-700);
  letter-spacing:.06em;margin-bottom:14px;
}
.eyebrow::before{content:"";width:16px;height:3px;border-radius:2px;background:var(--grad-brand);}
.section-head h2{font-size:32px;margin-bottom:14px;}
.section-head p{color:var(--ink-500);font-size:16px;}

/* ============ 交错长条 ============ */
.zigzag{display:flex;flex-direction:column;gap:34px;}
.zz-row{
  display:grid;grid-template-columns:1.02fr .98fr;gap:0;align-items:stretch;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-sm);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.zz-row:hover{box-shadow:var(--sh-md);transform:translateY(-3px);}
.zz-media{position:relative;overflow:hidden;background:#EAF3EE;}
.zz-media img{width:100%;height:100%;min-height:290px;object-fit:cover;}
.zz-media::after{
  content:"";position:absolute;inset:0;background:var(--grad-brand);opacity:.14;pointer-events:none;
}
.zz-body{padding:40px 42px;display:flex;flex-direction:column;justify-content:center;}
.zz-index{
  display:inline-grid;place-items:center;width:44px;height:44px;border-radius:14px;
  background:var(--grad-brand);color:#fff;font-size:15px;font-weight:800;
  font-variant-numeric:tabular-nums;margin-bottom:18px;box-shadow:0 8px 18px rgba(11,166,120,.22);
}
.zz-body h3{font-size:22px;margin-bottom:12px;}
.zz-body > p{color:var(--ink-500);font-size:15px;line-height:1.85;margin-bottom:18px;}
.tick-list{display:flex;flex-direction:column;gap:10px;}
.tick-list li{
  position:relative;padding-left:26px;font-size:15px;color:var(--ink-700);line-height:1.7;
}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;width:15px;height:15px;border-radius:5px;
  background:rgba(79,216,173,.22);
}
.tick-list li::after{
  content:"";position:absolute;left:4.5px;top:13px;width:6px;height:6px;border-radius:2px;
  background:var(--brand-600);
}
.zz-row.reverse .zz-media{order:2;}
.zz-row.reverse .zz-body{order:1;}

/* ============ 对照表 ============ */
.table-shell{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);overflow:hidden;
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
.table-scroll::-webkit-scrollbar{height:8px;}
.table-scroll::-webkit-scrollbar-thumb{background:#D6E2DB;border-radius:8px;}
table.cmp{width:100%;min-width:900px;border-collapse:separate;border-spacing:0;}
.cmp thead th{
  position:sticky;top:0;z-index:2;background:#EFF7F2;color:var(--brand-700);
  font-size:13px;font-weight:700;text-align:left;padding:16px 20px;
  border-bottom:1px solid var(--line);white-space:nowrap;letter-spacing:.02em;
}
.cmp tbody td,.cmp tbody th{
  padding:18px 20px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-700);
  vertical-align:top;text-align:left;font-weight:400;line-height:1.7;
}
.cmp tbody th{
  position:sticky;left:0;z-index:1;background:#FBFDFC;font-weight:700;color:var(--ink-900);
  white-space:nowrap;border-right:1px solid var(--line);
}
.cmp tbody tr:last-child td,.cmp tbody tr:last-child th{border-bottom:0;}
.cmp tbody tr:hover td,.cmp tbody tr:hover th{background:rgba(168,224,99,.10);}
.tag-x{
  display:inline-block;padding:3px 10px;border-radius:var(--r-pill);font-size:12px;font-weight:700;
  background:rgba(79,216,173,.16);color:var(--brand-700);white-space:nowrap;
}
.tag-x.warn{background:rgba(255,216,77,.30);color:#8A6200;}
.table-note{font-size:13px;color:var(--ink-500);margin-top:16px;}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item:hover{border-color:var(--brand-400);box-shadow:var(--sh-sm);}
.faq-item.open{border-color:var(--brand-400);box-shadow:var(--sh-md);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;padding:20px 22px;background:transparent;
  border:0;cursor:pointer;text-align:left;font-size:17px;font-weight:700;color:var(--ink-900);
  position:relative;transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--brand-700);}
.faq-num{
  font-size:13px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums;
  flex-shrink:0;width:26px;
}
.faq-q span.faq-text{flex:1;}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:9px;background:rgba(79,216,173,.16);
  color:var(--brand-700);display:grid;place-items:center;font-size:12px;
  transition:transform .25s var(--ease),background .22s var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand-600);color:#fff;}
.faq-item.open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:var(--grad-brand);
}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
.faq-a p{padding:0 22px 22px 62px;font-size:15px;color:var(--ink-500);line-height:1.9;}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;background:var(--grad-brand);
  padding:46px 48px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:var(--sh-lg);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-70px;width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.16);
}
.cta-copy{position:relative;z-index:1;max-width:620px;}
.cta-copy h2{color:#fff;font-size:30px;margin-bottom:12px;}
.cta-copy p{color:rgba(255,255,255,.9);font-size:15px;}
.cta-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap;}
.cta-actions .btn-line{background:#fff;border-color:#fff;color:var(--brand-700);}
.cta-actions .btn-line:hover{background:#F0FBF6;color:var(--brand-700);}
.cta-actions .btn-ghost{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.5);color:#fff;}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.24);color:#fff;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 26px;margin-top:0;}
.site-footer .logo-text{color:#fff;}
.site-footer .logo-text small{color:rgba(255,255,255,.55);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);margin-top:18px;max-width:360px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68);}
.footer-links a:hover{color:var(--lime-400);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 移动底栏 ============ */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:900;
  gap:10px;padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.94);backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
}
.mobile-bar .btn-main,.mobile-bar .btn-line{flex:1;height:44px;font-size:14px;padding:0 12px;}

/* ============ 响应式 ============ */
@media(max-width:1199px){
  :root{--sec:72px;}
  .page-hero h1{font-size:38px;}
  .nav-menu{margin-left:0;}
  .nav-link-x{padding:8px 10px;font-size:14px;}
  .command-search{min-width:180px;}
  .quick-link{display:none;}
}
@media(max-width:991px){
  .nav-menu{display:none;}
  .menu-toggle{display:grid;place-items:center;}
  .command-search{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-media{order:2;}
  .float-card{right:12px;bottom:-18px;}
  .metrics{margin-top:0;padding-top:34px;}
  .metrics-card{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(2){border-right:0;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line);}
  .zz-row,.zz-row.reverse{grid-template-columns:1fr;}
  .zz-row.reverse .zz-media{order:0;}
  .zz-row.reverse .zz-body{order:0;}
  .zz-media img{min-height:230px;}
  .zz-body{padding:32px 30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:38px 32px;}
}
@media(max-width:767px){
  :root{--sec:56px;}
  .wrap{padding:0 18px;}
  body{padding-bottom:72px;}
  .page-hero{padding:24px 0 60px;}
  .page-hero h1{font-size:30px;}
  .hero-lead{font-size:15px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn-main,.hero-actions .btn-line{width:100%;}
  .section-head h2{font-size:24px;}
  .section-head{margin-bottom:32px;}
  .metrics-card{grid-template-columns:1fr;}
  .metric{border-right:0;border-bottom:1px solid var(--line);}
  .metric:last-child{border-bottom:0;}
  .zz-body{padding:26px 22px;}
  .zz-body h3{font-size:19px;}
  .zz-index{width:38px;height:38px;border-radius:12px;font-size:13px;}
  .faq-q{font-size:15px;padding:16px 18px;gap:10px;}
  .faq-a p{padding:0 18px 18px 54px;font-size:14px;}
  .cta-copy h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-line,.cta-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;font-size:12px;}
  .mobile-bar{display:flex;}
  .float-card{position:static;margin-top:16px;justify-content:space-between;}
  .hero-media::after{bottom:auto;height:100%;}
}
@media(max-width:575px){
  .badge-row .badge-x.hide-sm{display:none;}
  .page-hero h1{font-size:26px;}
  .trust-row{gap:12px;}
}

/* roulang page: category3 */
:root{
  --brand-700:#067A5C;
  --brand-600:#0BA678;
  --brand-500:#12C08C;
  --brand-400:#4FD8AD;
  --lime-400:#A8E063;
  --accent-500:#FF7A3D;
  --accent-400:#FF9E5C;
  --volt-400:#FFD84D;
  --ink-900:#101A1E;
  --ink-700:#2C3A3F;
  --ink-500:#5A6B70;
  --line:#E2E8E4;
  --bg:#F5F8F6;
  --surface:#FFFFFF;
  --ok:#12A66A;
  --warn:#FFB020;
  --err:#E5484D;
  --grad-brand:linear-gradient(120deg,#0BA678 0%,#4FD8AD 46%,#A8E063 100%);
  --grad-cta:linear-gradient(100deg,#FF7A3D,#FF9E3D);
  --r-xl:20px;
  --r-md:16px;
  --r-sm:12px;
  --sh-sm:0 1px 2px rgba(16,26,30,.06);
  --sh-md:0 8px 24px rgba(16,26,30,.08);
  --sh-lg:0 18px 48px rgba(11,120,90,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--brand-600);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.01em;font-weight:800;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){.wrap{max-width:1280px;}}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
  white-space:nowrap;
}
.btn-x:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(79,216,173,.45);}
.btn-primary-x{background:var(--grad-cta);color:#fff;box-shadow:var(--sh-md);}
.btn-primary-x:hover{color:#fff;transform:translateY(-1px);box-shadow:var(--sh-lg);filter:brightness(1.02);}
.btn-primary-x:active{transform:translateY(1px);box-shadow:var(--sh-sm);}
.btn-outline-x{background:#fff;border-color:var(--brand-600);color:var(--brand-700);}
.btn-outline-x:hover{background:rgba(79,216,173,.12);color:var(--brand-700);transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-outline-x:active{transform:translateY(1px);box-shadow:var(--sh-sm);}
.btn-ghost-x{background:transparent;color:var(--ink-700);}
.btn-ghost-x:hover{background:rgba(16,26,30,.06);color:var(--ink-900);}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:height .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-sm);}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:72px;transition:height .24s var(--ease);
}
.site-header.scrolled .header-inner{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad-brand);color:#fff;font-size:16px;box-shadow:var(--sh-sm);
}
.logo-text{
  display:flex;flex-direction:column;line-height:1.15;
  font-size:16px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;
}
.logo-text small{font-size:11px;font-weight:600;color:var(--ink-500);letter-spacing:0;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link-x{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 13px;border-radius:10px;
  font-size:14.5px;font-weight:600;color:var(--ink-700);
  transition:background-color .22s var(--ease),color .22s var(--ease);
}
.nav-link-x::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:0;height:2px;border-radius:2px;background:var(--brand-600);
  transition:width .22s var(--ease);
}
.nav-link-x:hover{background:rgba(79,216,173,.12);color:var(--brand-700);}
.nav-link-x.active{background:rgba(79,216,173,.16);color:var(--brand-700);}
.nav-link-x.active::after{width:20px;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  height:40px;min-width:220px;padding:0 10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.cmd-search i{font-size:13px;color:var(--ink-500);}
.cmd-search input{
  border:0;outline:none;background:transparent;flex:1;min-width:0;
  font-size:14px;color:var(--ink-900);
}
.cmd-search input::placeholder{color:#9AA9A5;}
.cmd-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(18,192,140,.16);}
.cmd-key{
  display:inline-flex;align-items:center;justify-content:center;
  width:22px;height:22px;border:1px solid var(--line);border-radius:6px;
  font-size:12px;font-weight:600;color:var(--ink-500);background:var(--bg);
}
.cmd-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-lg);padding:10px;display:none;z-index:80;
}
.cmd-panel.open{display:block;}
.cmd-panel a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:10px;font-size:14px;color:var(--ink-700);font-weight:600;
}
.cmd-panel a:hover{background:rgba(79,216,173,.12);color:var(--brand-700);}
.cmd-panel span{font-size:12px;font-weight:600;color:var(--ink-500);padding:2px 10px 6px;display:block;}
.link-quick{font-size:14px;font-weight:600;color:var(--ink-700);padding:8px 4px;}
.link-quick:hover{color:var(--brand-700);}
.btn-nav-cta{height:40px;padding:0 18px;font-size:14px;background:var(--grad-cta);color:#fff;border-radius:var(--r-sm);box-shadow:var(--sh-sm);display:inline-flex;align-items:center;font-weight:600;}
.btn-nav-cta:hover{color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;color:var(--ink-700);font-size:16px;cursor:pointer;
}
.nav-toggle:hover{background:var(--bg);}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,26,30,.45);opacity:0;pointer-events:none;
  transition:opacity .24s var(--ease);z-index:90;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:86%;max-width:340px;
  background:#fff;z-index:100;transform:translateX(100%);
  transition:transform .28s var(--ease);padding:20px;overflow-y:auto;
  display:flex;flex-direction:column;gap:8px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-700);cursor:pointer;}
.drawer .nav-link-x{width:100%;justify-content:flex-start;padding:12px 14px;}
.drawer .btn-x{width:100%;margin-top:8px;}

/* ---------- 顶部提示条 ---------- */
.top-strip{background:var(--grad-brand);color:#fff;}
.top-strip .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;padding-top:8px;padding-bottom:8px;}
.top-strip p{font-size:13.5px;font-weight:600;letter-spacing:.01em;}
.top-strip strong{font-variant-numeric:tabular-nums;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--bg);padding:72px 0 88px;}
.hero::before{
  content:"";position:absolute;top:-180px;left:-140px;width:520px;height:520px;border-radius:50%;
  background:var(--grad-brand);opacity:.14;filter:blur(6px);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.badge-x{
  display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 12px;border-radius:999px;
  background:rgba(79,216,173,.14);color:var(--brand-700);
  font-size:13px;font-weight:600;
}
.badge-x i{font-size:12px;}
.badge-x.volt{background:rgba(255,216,77,.28);color:#7A5A00;}
.hero h1{font-size:44px;line-height:1.22;margin-bottom:18px;}
.hero h1 em{font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{font-size:16.5px;color:var(--ink-500);max-width:520px;margin-bottom:28px;}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px;}
.trust-row{display:flex;flex-wrap:wrap;gap:20px;}
.trust-row span{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:600;color:var(--ink-500);}
.trust-row i{color:var(--brand-600);font-size:12px;}
.hero-visual{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-lg);aspect-ratio:16/10;
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;background:var(--grad-brand);opacity:.22;
}
.float-card{
  position:absolute;right:16px;bottom:16px;z-index:2;
  background:rgba(255,255,255,.95);border-radius:var(--r-md);
  padding:14px 18px;box-shadow:var(--sh-md);min-width:196px;
}
.float-card b{display:block;font-size:22px;font-weight:800;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.3;}
.float-card small{display:block;font-size:12.5px;font-weight:600;color:var(--ink-500);}
.float-card hr{border:0;border-top:1px solid var(--line);margin:10px 0;}
.hero-fade{
  position:absolute;left:0;right:0;bottom:0;height:80px;
  background:linear-gradient(to bottom,rgba(245,248,246,0),var(--bg));pointer-events:none;
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.section-alt{background:#fff;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head .tag{
  display:inline-flex;align-items:center;gap:7px;height:26px;padding:0 11px;border-radius:999px;
  background:rgba(79,216,173,.16);color:var(--brand-700);font-size:12.5px;font-weight:700;margin-bottom:14px;
}
.section-head h2{font-size:32px;line-height:1.3;margin-bottom:14px;}
.section-head p{font-size:15.5px;color:var(--ink-500);}

/* ---------- 时间轴 ---------- */
.timeline{display:grid;gap:0;}
.tl-item{position:relative;display:grid;grid-template-columns:64px 1fr;gap:20px;padding-bottom:30px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:27px;top:62px;bottom:6px;width:2px;
  background:linear-gradient(to bottom,rgba(18,192,140,.5),rgba(168,224,99,.2));
}
.tl-item:last-child::before{display:none;}
.tl-num{
  width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--grad-brand);color:#fff;font-size:18px;font-weight:800;
  font-variant-numeric:tabular-nums;box-shadow:var(--sh-md);
}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--sh-sm);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);}
.tl-card h3{font-size:19px;margin-bottom:8px;}
.tl-card p{font-size:15px;color:var(--ink-500);}
.tl-card .tl-note{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.tl-note span{font-size:12.5px;font-weight:600;color:var(--brand-700);background:rgba(79,216,173,.14);border-radius:999px;padding:4px 11px;}

/* ---------- 数据墙 ---------- */
.stat-wall{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.stat{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:22px;
  box-shadow:var(--sh-sm);transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.stat:hover{transform:translateY(-4px);box-shadow:var(--sh-md);}
.stat b{display:block;font-size:30px;font-weight:800;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.2;}
.stat span{display:block;font-size:14.5px;font-weight:700;color:var(--ink-900);margin-top:6px;}
.stat p{font-size:13.5px;color:var(--ink-500);margin-top:6px;}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.scene{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);overflow:hidden;
  box-shadow:var(--sh-sm);transition:transform .22s var(--ease),box-shadow .22s var(--ease);
  display:flex;flex-direction:column;
}
.scene:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);}
.scene-img{aspect-ratio:16/9;overflow:hidden;}
.scene-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.scene:hover .scene-img img{transform:scale(1.04);}
.scene-body{padding:22px 24px 26px;}
.scene-body h3{font-size:19px;margin-bottom:10px;}
.scene-body p{font-size:14.5px;color:var(--ink-500);}
.scene-body ul{margin-top:14px;display:grid;gap:8px;}
.scene-body li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-700);}
.scene-body li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--grad-brand);
}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start;}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  padding:32px;box-shadow:var(--sh-md);
}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;font-weight:700;color:var(--ink-900);margin-bottom:8px;}
.field label i{color:var(--err);font-size:11px;margin-left:4px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;font-size:15px;color:var(--ink-900);font-family:inherit;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.field textarea{height:118px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-500) 50%),linear-gradient(135deg,var(--ink-500) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(18,192,140,.16);
}
.field .hint{display:block;font-size:12.5px;color:var(--ink-500);margin-top:6px;}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.form-foot .btn-x{width:200px;}
.form-foot small{font-size:12.5px;color:var(--ink-500);}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);padding:26px;
  box-shadow:var(--sh-sm);margin-bottom:20px;
}
.side-card h3{font-size:17px;margin-bottom:14px;}
.side-card ol{counter-reset:step;display:grid;gap:14px;}
.side-card ol li{position:relative;padding-left:38px;font-size:14.5px;color:var(--ink-700);}
.side-card ol li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:0;width:26px;height:26px;border-radius:8px;
  background:rgba(79,216,173,.18);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;
}
.side-note{background:var(--bg);border:1px dashed var(--line);border-radius:var(--r-md);padding:16px;font-size:13.5px;color:var(--ink-500);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.faq-item.open{border-color:rgba(18,192,140,.5);box-shadow:var(--sh-md);}
.faq-q{
  position:relative;width:100%;display:flex;align-items:center;gap:14px;
  padding:20px 22px;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:700;color:var(--ink-900);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad-brand);
  transform:scaleY(0);transform-origin:top;transition:transform .24s var(--ease);
}
.faq-item.open .faq-q::before{transform:scaleY(1);}
.faq-idx{font-size:13px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums;}
.faq-q .q-text{flex:1;}
.faq-q i{font-size:14px;color:var(--ink-500);transition:transform .24s var(--ease);}
.faq-item.open .faq-q i{transform:rotate(45deg);color:var(--brand-600);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a p{padding:0 22px 22px 60px;font-size:14.5px;color:var(--ink-500);}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--grad-brand);border-radius:var(--r-xl);
  padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--sh-lg);color:#fff;
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.9);font-size:15px;max-width:560px;}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-white{background:#fff;color:var(--brand-700);}
.cta-band .btn-white:hover{color:var(--brand-700);transform:translateY(-1px);box-shadow:var(--sh-md);}
.cta-band .btn-line{background:transparent;border-color:rgba(255,255,255,.7);color:#fff;}
.cta-band .btn-line:hover{background:rgba(255,255,255,.14);color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0;}
.site-footer .logo-text{color:#fff;}
.site-footer .logo-text small{color:rgba(255,255,255,.55);}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:44px;}
.footer-about{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6);margin-top:16px;max-width:340px;}
.site-footer h4{font-size:14px;font-weight:800;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-links{display:grid;gap:11px;}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.7);}
.footer-links a:hover{color:var(--brand-400);}
.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:14px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.5);
}

/* ---------- 移动端底部操作条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  gap:12px;
}
.mobile-bar .btn-x{flex:1;height:44px;font-size:14px;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero h1{font-size:38px;}
  .wrap{padding:0 20px;}
}
@media (max-width:991px){
  .nav-menu,.cmd-search,.link-quick{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .section{padding:72px 0;}
  .hero{padding:56px 0 68px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:34px;}
  .hero-sub{max-width:none;}
  .form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .stat-wall{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .section-head{margin-bottom:30px;}
  .section-head h2{font-size:25px;}
  .hero h1{font-size:29px;}
  .hero-sub{font-size:15.5px;}
  .hero-btns .btn-x{flex:1;}
  .scene-grid{grid-template-columns:1fr;}
  .tl-item{grid-template-columns:48px 1fr;gap:14px;}
  .tl-num{width:44px;height:44px;font-size:15px;}
  .tl-item::before{left:21px;top:50px;}
  .tl-card{padding:18px;}
  .cta-band{padding:28px 22px;}
  .cta-band h2{font-size:22px;}
  .form-card{padding:22px;}
  .form-foot .btn-x{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-a p{padding:0 20px 20px 20px;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .mobile-bar{display:flex;}
  body{padding-bottom:68px;}
}
@media (max-width:575px){
  .badge-row .badge-x.optional{display:none;}
  .stat-wall{grid-template-columns:1fr;}
  .trust-row{gap:12px;}
  .logo-text small{display:none;}
}