/* roulang page: index */
:root{
  --primary:#2A6BD4;
  --primary-700:#1F55A8;
  --primary-500:#4A8AE8;
  --primary-50:#EEF4FE;
  --accent:#EE7B33;
  --accent-50:#FDF3EB;
  --page-bg:#F6F8FB;
  --surface:#FFFFFF;
  --soft:#F2F6FC;
  --deep:#12263F;
  --ink-900:#101B2C;
  --ink-700:#2C3E52;
  --ink-600:#4E6076;
  --ink-400:#8A9AAE;
  --line:#E3E9F2;
  --divider:#EEF2F7;
  --field:#D9E2EE;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-card:0 6px 20px -8px rgba(16,27,44,.12), 0 2px 6px rgba(16,27,44,.05);
  --shadow-hover:0 14px 32px -12px rgba(42,107,212,.28);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--page-bg);
  color:var(--ink-600);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(42,107,212,.25);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.sec{padding:56px 0}
@media (min-width:768px){
  .sec{padding:72px 0}
  .container{padding:0 24px}
}
@media (min-width:1024px){
  .sec{padding:96px 0}
  .container{padding:0 32px}
}
.sec-title{font-size:24px;line-height:1.3;letter-spacing:.01em}
.sec-sub{margin-top:12px;color:var(--ink-600);max-width:800px}
@media (min-width:1024px){
  .sec-title{font-size:34px}
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);background:var(--primary-50);
  border-radius:999px;padding:5px 14px;
}
.read{max-width:800px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);padding:12px 24px;
  font-weight:600;font-size:16px;line-height:1.4;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease-out,color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-700);transform:translateY(-1px)}
.btn-primary:active{transform:none}
.btn-outline{background:var(--surface);border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-50)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#D96A26;transform:translateY(-1px)}
.btn-accent:active{transform:none}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-ghost-light:hover{background:rgba(255,255,255,.1)}
.btn-sm{padding:9px 18px;font-size:15px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;transition:gap .2s ease-out,color .2s ease-out}
.link-arrow:hover{gap:11px;color:var(--primary-700)}
.link-plain{color:#fff;font-weight:600;border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:2px}
.link-plain:hover{border-color:#fff}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  background:var(--primary-50);color:var(--primary);
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge-accent{background:var(--accent-50);color:#C25A17}

/* 卡片 */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:24px;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.card:hover .card-title{color:var(--primary)}
.card-title{font-size:19px;font-weight:700;color:var(--ink-900);transition:color .2s ease-out;line-height:1.5}
.card p{color:var(--ink-600);font-size:16px}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:height .2s ease-out;
}
.site-header .header-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;transition:height .2s ease-out}
.site-header.compact .header-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;transition:transform .2s ease-out}
.site-header.compact .logo{transform:scale(.92);transform-origin:left center}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-500) 100%);
  display:flex;align-items:center;justify-content:center;color:#fff;
}
.logo-text{font-size:18px;font-weight:700;color:var(--ink-900);white-space:nowrap;letter-spacing:.01em}
.nav-desktop{display:none;align-items:center;gap:32px}
@media (min-width:1024px){.nav-desktop{display:flex}}
.nav-link{
  position:relative;padding:6px 0;font-size:16px;font-weight:500;color:var(--ink-700);
  transition:color .2s ease-out;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-8px;height:2px;background:var(--primary);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.header-cta{display:none}
@media (min-width:768px){.header-cta{display:inline-flex}}
.menu-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink-700);
}
@media (min-width:1024px){.menu-btn{display:none}}

/* 移动抽屉 */
.mobile-panel{
  display:none;position:fixed;inset:56px 0 0 0;z-index:55;
  background:#fff;overflow-y:auto;
}
.mobile-panel.open{display:block}
.mobile-panel a.m-item{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 20px;border-bottom:1px solid var(--divider);
  font-size:17px;color:var(--ink-700);
}
.mobile-panel a.m-item.active{color:var(--primary);font-weight:600}
.mobile-panel .m-cta{padding:20px}

/* Hero */
.hero{padding:56px 0 48px}
@media (min-width:1024px){.hero{padding:96px 0 80px}}
.hero h1{
  font-size:30px;line-height:1.25;letter-spacing:.01em;margin:18px 0 0;
}
@media (min-width:1024px){.hero h1{font-size:46px}}
.hero-sub{margin-top:18px;font-size:17px;color:var(--ink-600);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-media{position:relative;margin-top:40px}
@media (min-width:1024px){.hero-media{margin-top:0}}
.hero-media img{border-radius:var(--radius-card);width:100%;height:280px;object-fit:cover;box-shadow:var(--shadow-card)}
@media (min-width:768px){.hero-media img{height:360px}}
@media (min-width:1024px){.hero-media img{height:420px}}
.float-card{
  position:absolute;left:18px;bottom:-24px;
  background:#fff;border-radius:var(--radius-card);border:1px solid var(--line);
  box-shadow:0 14px 32px -12px rgba(42,107,212,.28);
  padding:16px 20px;min-width:196px;
}
.float-num{font-size:32px;font-weight:700;color:var(--primary);line-height:1.1;font-variant-numeric:tabular-nums}
.float-label{font-size:13px;color:var(--ink-400);margin-top:4px}
.trust-bar{margin-top:64px;border-top:1px solid var(--line);padding-top:28px}
.trust-item{padding-right:16px}
.trust-num{font-size:28px;font-weight:700;color:var(--ink-900);line-height:1.2;font-variant-numeric:tabular-nums}
.trust-num span{font-size:16px;color:var(--primary);margin-left:2px}
.trust-label{font-size:14px;color:var(--ink-400);margin-top:4px}

/* 痛点 */
.pain-card{
  background:#fff;border:1px solid var(--line);border-left:3px solid var(--primary);
  border-radius:var(--radius-card);padding:24px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.pain-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.pain-card h3{font-size:18px;margin-bottom:10px}
.pain-card .pain-now{font-size:15px;color:var(--ink-600)}
.pain-card .pain-risk{font-size:15px;color:var(--ink-400);margin-top:8px;padding-top:8px;border-top:1px dashed var(--divider)}

/* 方案步骤 */
.step-index{
  font-size:34px;font-weight:700;color:var(--primary);
  line-height:1;font-variant-numeric:tabular-nums;flex:0 0 auto;width:64px;
}
.step-item{display:flex;gap:16px;padding:24px 0;border-bottom:1px solid var(--divider)}
.step-item:last-child{border-bottom:0}
.step-item h3{font-size:20px;margin-bottom:8px}
.step-item p{font-size:16px;color:var(--ink-600)}
.media-sticky img{border-radius:var(--radius-card);object-fit:cover;width:100%;height:320px}
@media (min-width:1024px){
  .media-sticky{position:sticky;top:96px}
  .media-sticky img{height:440px}
}

/* 数据带 */
.stat-band{background:var(--primary-50);border-radius:var(--radius-block);padding:40px 28px}
@media (min-width:1024px){.stat-band{padding:56px 48px}}
.stat-num{font-size:40px;font-weight:700;color:var(--primary);line-height:1.1;font-variant-numeric:tabular-nums}
@media (min-width:1024px){.stat-num{font-size:52px}}
.stat-num .unit{font-size:16px;margin-left:2px}
.stat-label{font-size:14px;color:var(--ink-400);margin-top:6px}

/* 证言 */
.quote-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.quote-mark{font-size:30px;line-height:1;color:var(--primary-50);margin-bottom:6px}
.quote-body{font-size:16px;color:var(--ink-600)}
.quote-person{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:16px;border-top:1px solid var(--divider)}
.quote-person img{width:40px;height:40px;border-radius:999px;object-fit:cover}
.quote-name{font-size:15px;font-weight:700;color:var(--ink-900);line-height:1.4}
.quote-role{font-size:13px;color:var(--ink-400);line-height:1.4}
.scroll-x{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px}
.scroll-x > *{scroll-snap-align:start;flex:0 0 82%}
.scroll-x::-webkit-scrollbar{display:none}
@media (min-width:1024px){
  .scroll-x{display:grid;grid-template-columns:repeat(3,1fr);overflow:visible;padding-bottom:0}
  .scroll-x > *{flex:none}
}

/* 资讯列表 */
.news-lead .cover{width:100%;height:220px;object-fit:cover;border-radius:var(--radius-img)}
@media (min-width:1024px){.news-lead .cover{height:280px}}
.mini-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--divider);transition:background-color .2s ease-out}
.mini-item:last-child{border-bottom:0}
.mini-item:hover{background:#F7FAFF}
.mini-item:hover .mini-title{color:var(--primary)}
.mini-item img{width:88px;height:66px;object-fit:cover;border-radius:var(--radius-img);flex:0 0 auto}
.mini-title{font-size:16px;font-weight:600;color:var(--ink-900);transition:color .2s ease-out;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-meta{font-size:13px;color:var(--ink-400);margin-top:6px;display:flex;gap:10px;align-items:center}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* 空态 */
.empty-state{text-align:center;padding:48px 20px}
.empty-state i{font-size:48px;color:rgba(42,107,212,.3)}
.empty-state h3{font-size:16px;margin-top:14px}
.empty-state p{font-size:14px;color:var(--ink-400);margin-top:6px}

/* CTA 带 */
.cta-band{
  background:linear-gradient(8deg,#12263F 0%,#17324F 100%);
  border-radius:0;color:#fff;padding:56px 0;
}
@media (min-width:1024px){.cta-band{padding:72px 0}}
.cta-band h2{color:#fff;font-size:24px}
@media (min-width:1024px){.cta-band h2{font-size:32px}}
.cta-band p{color:rgba(255,255,255,.72);margin-top:12px;max-width:640px}

/* 页脚 */
.site-footer{background:linear-gradient(8deg,#12263F 0%,#17324F 100%);color:rgba(255,255,255,.7);font-size:15px}
.site-footer .f-top{border-bottom:1px solid rgba(255,255,255,.12);padding:56px 0 40px}
.f-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.f-link{display:inline-block;padding:6px 0;color:rgba(255,255,255,.7);transition:color .2s ease-out,transform .2s ease-out}
.f-link:hover{color:#fff;transform:translateX(2px)}
.f-brand-name{font-size:18px;font-weight:700;color:#fff}
.f-qr{width:96px;height:96px;border-radius:12px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.5);font-size:12px;text-align:center;line-height:1.5}
.f-bottom{font-size:13px;color:rgba(255,255,255,.55);padding:20px 0}
.f-bottom a{color:rgba(255,255,255,.55)}
.f-bottom a:hover{color:#fff}
.f-acc summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  padding:14px 0;border-bottom:1px solid rgba(255,255,255,.12);
  font-weight:700;color:#fff;font-size:15px;
}
.f-acc summary::-webkit-details-marker{display:none}
.f-acc summary::after{content:"\f107";font-family:"Font Awesome 6 Free";font-weight:900;
  color:rgba(255,255,255,.6);transition:transform .2s ease-out}
.f-acc[open] summary::after{transform:rotate(180deg)}
.f-acc .f-acc-body{padding:8px 0 12px}

/* 移动底部 Tab */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  transition:transform .25s ease-out;
}
@media (min-width:768px){.mobile-tab{display:none}}
.mobile-tab.hide{transform:translateY(120%)}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  height:56px;gap:3px;font-size:11px;color:var(--ink-400);position:relative;
}
.mobile-tab a i{font-size:18px}
.mobile-tab a.active{color:var(--primary)}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;width:20px;height:3px;border-radius:0 0 3px 3px;background:var(--primary);
}
@media (max-width:767px){
  body{padding-bottom:72px}
  .card{padding:20px}
}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .4s ease-out,transform .4s ease-out}
.reveal.in{opacity:1;transform:none}
@media (max-width:767px){
  .reveal{opacity:1;transform:none;transition:none}
}

/* roulang page: article */
:root{
    --primary:#2A6BD4;
    --primary-700:#1F55A8;
    --primary-500:#4A8AE8;
    --primary-50:#EEF4FE;
    --accent:#EE7B33;
    --accent-50:#FDF3EB;
    --bg:#F6F8FB;
    --surface:#FFFFFF;
    --soft:#F2F6FC;
    --dark:#12263F;
    --ink-900:#101B2C;
    --ink-700:#2C3E52;
    --ink-600:#4E6076;
    --ink-400:#8A9AAE;
    --border:#E3E9F2;
    --divider:#EEF2F7;
    --input:#D9E2EE;
    --success:#2FA37A;
    --warning:#D99A22;
    --error:#D9534F;
    --r-card:16px;
    --r-img:12px;
    --r-btn:10px;
    --r-lg:20px;
    --shadow-card:0 6px 20px -8px rgba(16,27,44,.12), 0 2px 6px rgba(16,27,44,.05);
    --shadow-hover:0 14px 32px -12px rgba(42,107,212,.28);
    --ease:200ms ease-out;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
    font-size:17px;
    line-height:1.85;
    color:var(--ink-600);
    background:var(--bg);
    padding-bottom:0;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);}
  button,input,textarea,select{font-family:inherit;font-size:inherit;}
  button{cursor:pointer;border:none;background:none;}
  h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:.01em;}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:3px solid rgba(42,107,212,.28);outline-offset:2px;border-radius:6px;}

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

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.96);
    border-bottom:1px solid var(--border);
    transition:box-shadow var(--ease);
  }
  .site-header.scrolled{box-shadow:0 1px 0 #E3E9F2;}
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height var(--ease);}
  .site-header.scrolled .header-inner{height:60px;}
  .logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .logo-mark{
    width:34px;height:34px;border-radius:10px;
    background:linear-gradient(140deg,var(--primary-500),var(--primary));
    color:#fff;display:flex;align-items:center;justify-content:center;
    transition:transform var(--ease);
  }
  .site-header.scrolled .logo-mark{transform:scale(.92);}
  .logo-text{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;white-space:nowrap;}
  .nav-desktop{display:none;align-items:center;gap:6px;}
  .nav-link{
    position:relative;display:inline-block;
    padding:8px 14px;font-size:15px;font-weight:500;color:var(--ink-700);
    border-radius:8px;
  }
  .nav-link::after{
    content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
    background:var(--primary);border-radius:2px;
    transform:scaleX(0);transform-origin:left center;
    transition:transform var(--ease);
  }
  .nav-link:hover{color:var(--primary);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--primary);font-weight:600;}
  .nav-link.active::after{transform:scaleX(1);}
  .header-actions{display:flex;align-items:center;gap:12px;}
  .menu-btn{
    width:44px;height:44px;border-radius:10px;color:var(--ink-700);
    display:flex;align-items:center;justify-content:center;font-size:18px;
    border:1px solid var(--border);background:#fff;
  }
  .menu-btn:hover{color:var(--primary);border-color:var(--primary-500);}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--r-btn);font-weight:600;font-size:15px;
    padding:12px 24px;border:1px solid transparent;white-space:nowrap;
    transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  }
  .btn-primary{background:var(--primary);color:#fff;}
  .btn-primary:hover{background:var(--primary-700);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-outline{background:#fff;color:var(--primary);border-color:var(--primary);}
  .btn-outline:hover{background:var(--primary-50);}
  .btn-accent{background:var(--accent);color:#fff;}
  .btn-accent:hover{background:#d96a24;transform:translateY(-1px);}
  .btn-text{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px;font-size:15px;}
  .btn-text i{transition:transform var(--ease);}
  .btn-text:hover i{transform:translateX(6px);}
  .btn-sm{padding:9px 18px;font-size:14px;}
  .header-cta{display:none;}

  /* ---------- Mobile panel ---------- */
  .mobile-panel{
    position:fixed;inset:56px 0 0 0;background:#fff;z-index:55;
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
    overflow-y:auto;padding:8px 18px 32px;
    border-top:1px solid var(--border);
  }
  .mobile-panel.open{transform:translateY(0);opacity:1;visibility:visible;}
  .mobile-link{
    display:flex;align-items:center;height:52px;font-size:17px;color:var(--ink-700);
    border-bottom:1px solid var(--divider);
  }
  .mobile-link:hover{color:var(--primary);}
  .mobile-cta{width:100%;margin-top:24px;}
  .mobile-headbar{display:flex;align-items:center;height:56px;}

  /* ---------- Breadcrumb ---------- */
  .breadcrumb{padding:24px 0 0;font-size:13px;color:var(--ink-400);display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
  .breadcrumb a:hover{color:var(--primary);}
  .breadcrumb .sep{color:#C7D2E0;}
  .breadcrumb .current{color:var(--ink-400);max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

  /* ---------- Article head ---------- */
  .article-head{padding:20px 0 0;max-width:900px;}
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    background:var(--primary-50);color:var(--primary);
    font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;
  }
  .article-title{font-size:30px;line-height:1.3;margin:16px 0 0;word-break:break-word;}
  .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;margin-top:18px;font-size:14px;color:var(--ink-400);}
  .article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
  .article-meta i{font-size:13px;color:var(--primary-500);}
  .article-cover{margin-top:28px;border-radius:var(--r-card);overflow:hidden;aspect-ratio:21/9;background:var(--primary-50);}
  .article-cover img{width:100%;height:100%;object-fit:cover;}

  /* ---------- Layout ---------- */
  .article-layout{display:block;padding:32px 0 0;}
  .article-main{min-width:0;}
  .article-side{display:none;}

  .panel{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
    box-shadow:var(--shadow-card);padding:24px;
  }

  /* ---------- Rich text ---------- */
  .article-body{font-size:17px;line-height:1.9;color:var(--ink-600);max-width:800px;}
  .article-body > *:first-child{margin-top:0;}
  .article-body p{margin:0 0 1.2em;}
  .article-body h2{
    position:relative;font-size:24px;line-height:1.35;color:var(--ink-900);
    margin:40px 0 18px;padding-left:16px;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:5px;bottom:5px;width:3px;border-radius:2px;background:var(--primary);
  }
  .article-body h3{font-size:20px;line-height:1.4;color:var(--ink-900);margin:28px 0 14px;}
  .article-body h4{font-size:17px;font-weight:700;color:var(--ink-700);margin:22px 0 12px;}
  .article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:4px;}
  .article-body li{margin-bottom:10px;}
  .article-body ul li{position:relative;padding-left:20px;list-style:none;}
  .article-body ul li::before{
    content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;border-radius:2px;background:var(--primary);
  }
  .article-body ol{padding-left:24px;list-style:decimal;}
  .article-body ol li::marker{color:var(--primary);font-weight:600;}
  .article-body blockquote{
    margin:24px 0;padding:20px 22px;background:var(--primary-50);
    border-left:4px solid var(--primary);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--ink-700);
  }
  .article-body blockquote p:last-child{margin-bottom:0;}
  .article-body figure{margin:24px 0;}
  .article-body img{border-radius:var(--r-img);width:100%;}
  .article-body figcaption{font-size:14px;line-height:1.6;color:var(--ink-400);text-align:center;margin-top:10px;}
  .article-body table{
    width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
    display:block;overflow-x:auto;white-space:nowrap;
  }
  .article-body th,.article-body td{border:1px solid var(--border);padding:12px 14px;text-align:left;}
  .article-body th{background:var(--primary-50);color:var(--ink-900);font-weight:600;}
  .article-body tbody tr:hover td{background:#F7FAFF;}
  .article-body pre{
    background:var(--dark);color:#DCE6F5;padding:18px 20px;border-radius:var(--r-img);
    overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
  }
  .article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;}
  .article-body p code,.article-body li code{background:var(--soft);color:var(--ink-700);padding:2px 6px;border-radius:6px;}
  .article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
  .article-body a:hover{color:var(--primary-700);}
  .article-body hr{border:none;border-top:1px solid var(--divider);margin:32px 0;}

  /* ---------- Article footer tools ---------- */
  .article-tools{max-width:800px;margin-top:36px;padding-top:24px;border-top:1px solid var(--divider);}
  .tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
  .tag{
    display:inline-flex;align-items:center;background:var(--primary-50);color:var(--primary);
    font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;
  }
  .copy-btn{
    display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--ink-700);
    border:1px solid var(--border);border-radius:var(--r-btn);padding:9px 16px;background:#fff;
    transition:border-color var(--ease),color var(--ease),background-color var(--ease);
  }
  .copy-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-50);}
  .article-tools-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:20px;}
  .back-link{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-weight:600;font-size:15px;}
  .back-link i{transition:transform var(--ease);}
  .back-link:hover i{transform:translateX(-4px);}

  /* ---------- Prev / Next ---------- */
  .post-nav{max-width:800px;margin-top:32px;display:grid;gap:16px;}
  .post-nav-card{
    display:block;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
    padding:20px 24px;box-shadow:var(--shadow-card);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  }
  .post-nav-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D6E2F5;}
  .post-nav-label{font-size:13px;color:var(--ink-400);display:flex;align-items:center;gap:8px;}
  .post-nav-title{font-size:16px;font-weight:600;color:var(--ink-900);margin-top:8px;line-height:1.6;}
  .post-nav-card:hover .post-nav-title{color:var(--primary);}

  /* ---------- Related reading ---------- */
  .section{padding:56px 0 0;}
  .section-head{margin-bottom:24px;}
  .section-title{font-size:24px;line-height:1.3;}
  .section-sub{margin-top:10px;font-size:15px;color:var(--ink-400);line-height:1.7;}
  .read-grid{display:grid;gap:24px;grid-template-columns:1fr;}
  .read-card{
    display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);
    border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);
    transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  }
  .read-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D6E2F5;}
  .read-card-media{aspect-ratio:16/9;background:var(--primary-50);overflow:hidden;}
  .read-card-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
  .read-card:hover .read-card-media img{transform:scale(1.03);}
  .read-card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .read-card-title{font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.6;}
  .read-card:hover .read-card-title{color:var(--primary);}
  .read-card-text{font-size:15px;line-height:1.8;color:var(--ink-600);}
  .read-card-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--divider);display:flex;align-items:center;justify-content:space-between;font-size:14px;color:var(--ink-400);}
  .read-card-foot i{color:var(--primary);transition:transform var(--ease);}
  .read-card:hover .read-card-foot i{transform:translateX(6px);}

  /* ---------- Sidebar ---------- */
  .side-block + .side-block{margin-top:24px;}
  .side-title{font-size:16px;font-weight:700;color:var(--ink-900);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
  .side-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--primary);}
  .side-list li{border-bottom:1px solid var(--divider);}
  .side-list li:last-child{border-bottom:none;}
  .side-list a{display:flex;align-items:center;gap:10px;padding:14px 0;font-size:15px;color:var(--ink-700);}
  .side-list a:hover{background:#F7FAFF;color:var(--primary);padding-left:8px;}
  .side-dot{width:4px;height:4px;border-radius:50%;background:var(--primary);flex-shrink:0;}
  .side-cta{background:var(--primary-50);border-color:#DCE8FB;}
  .side-cta h3{font-size:17px;color:var(--ink-900);line-height:1.6;}
  .side-cta p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--ink-600);}
  .side-cta .btn{width:100%;margin-top:18px;}

  /* ---------- CTA band ---------- */
  .cta-band{
    margin-top:56px;
    background:linear-gradient(8deg,#12263F 0%,#17324F 100%);
    color:#fff;
  }
  .cta-inner{padding:56px 0;display:flex;flex-direction:column;gap:24px;}
  .cta-band h2{color:#fff;font-size:24px;line-height:1.4;max-width:760px;}
  .cta-band p{margin-top:12px;color:rgba(255,255,255,.72);font-size:16px;line-height:1.85;max-width:760px;}
  .cta-band .btn{width:100%;}
  .cta-band .btn-text{color:#fff;}

  /* ---------- Footer ---------- */
  .site-footer{background:linear-gradient(8deg,#12263F 0%,#17324F 100%);color:rgba(255,255,255,.7);font-size:15px;margin-top:0;}
  .site-footer .container{padding-top:56px;padding-bottom:32px;}
  .site-footer .logo-mark{background:rgba(255,255,255,.12);color:#fff;}
  .f-brand-name{font-size:18px;font-weight:700;color:#fff;}
  .f-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
  .site-footer p{line-height:1.85;}
  .f-link{display:inline-block;padding:5px 0;color:rgba(255,255,255,.7);}
  .f-link:hover{color:#fff;transform:translateX(2px);}
  .f-qr{
    width:96px;height:96px;border-radius:12px;background:rgba(255,255,255,.08);
    border:1px dashed rgba(255,255,255,.28);display:flex;align-items:center;justify-content:center;
    text-align:center;font-size:12px;line-height:1.6;color:rgba(255,255,255,.65);padding:8px;
  }
  .f-bottom{
    margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
    font-size:13px;color:rgba(255,255,255,.55);display:flex;flex-direction:column;gap:10px;
  }
  .f-fold{border-bottom:1px solid rgba(255,255,255,.12);}
  .f-fold summary{
    list-style:none;display:flex;align-items:center;justify-content:space-between;
    padding:16px 0;font-size:15px;font-weight:600;color:#fff;cursor:pointer;
  }
  .f-fold summary::-webkit-details-marker{display:none;}
  .f-fold summary i{color:rgba(255,255,255,.6);transition:transform var(--ease);}
  .f-fold[open] summary i{transform:rotate(180deg);}
  .f-fold .f-fold-body{padding-bottom:16px;}

  /* ---------- Mobile tabbar ---------- */
  .mobile-tabbar{
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:rgba(255,255,255,.97);border-top:1px solid var(--border);
    display:flex;align-items:stretch;justify-content:space-around;
    height:calc(56px + env(safe-area-inset-bottom));
    padding-bottom:env(safe-area-inset-bottom);
    transition:transform var(--ease);
  }
  .mobile-tabbar.hide{transform:translateY(100%);}
  .tab-item{
    position:relative;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:3px;font-size:11px;color:var(--ink-400);min-height:44px;
  }
  .tab-item i{font-size:18px;}
  .tab-item::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);
    width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--primary);
    transition:transform var(--ease);
  }
  .tab-item.active{color:var(--primary);font-weight:600;}
  .tab-item.active::before{transform:translateX(-50%) scaleX(1);}

  /* ---------- Empty state ---------- */
  .empty-state{
    text-align:center;padding:64px 24px;background:var(--surface);
    border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--shadow-card);
  }
  .empty-state i{font-size:48px;color:rgba(42,107,212,.3);}
  .empty-state h2{margin-top:18px;font-size:18px;}
  .empty-state p{margin-top:10px;font-size:14px;color:var(--ink-400);}
  .empty-state .btn{margin-top:22px;}

  /* ---------- Reveal ---------- */
  .reveal{opacity:0;transform:translateY(8px);transition:opacity 420ms ease-out,transform 420ms ease-out;}
  .reveal.in{opacity:1;transform:none;}

  /* ---------- Breakpoints ---------- */
  @media (min-width:640px){
    .read-grid{grid-template-columns:repeat(2,1fr);}
    .post-nav{grid-template-columns:1fr 1fr;}
    .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;}
    .cta-band .btn{width:auto;}
  }
  @media (min-width:768px){
    .nav-desktop{display:flex;}
    .menu-btn{display:none;}
    .mobile-panel{display:none;}
    .header-cta{display:inline-flex;}
    .mobile-tabbar{display:none;}
    body{padding-bottom:0;}
    .article-title{font-size:38px;}
    .article-body{font-size:17px;}
  }
  @media (min-width:1024px){
    .article-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px;padding-top:40px;}
    .article-side{display:block;}
    .article-side-inner{position:sticky;top:96px;}
    .read-grid{grid-template-columns:repeat(3,1fr);}
    .section{padding-top:72px;}
    .cta-band{margin-top:80px;}
    .cta-inner{padding:72px 0;}
    .cta-band h2{font-size:30px;}
    .article-title{font-size:46px;}
  }
  @media (max-width:1023px){
    .side-block + .side-block{margin-top:24px;}
    .article-side{margin-top:40px;}
  }
  @media (max-width:767px){
    .container{padding:0 18px;}
    .header-inner{height:56px;}
    .site-header.scrolled .header-inner{height:56px;}
    .logo-text{font-size:17px;}
    body{padding-bottom:72px;}
    .site-footer .container{padding-top:32px;padding-bottom:88px;}
    .section{padding-top:56px;}
    .cta-inner{padding:48px 0;}
    .article-title{font-size:30px;}
    .article-meta{font-size:13px;gap:8px 16px;}
    .panel{padding:20px;}
    .read-card-body{padding:20px;}
  }
  @media (max-width:520px){
    .article-body h2{font-size:21px;}
    .article-body h3{font-size:18px;}
    .article-body table{font-size:14px;}
  }
  @media (hover:none){
    .read-card:hover,.post-nav-card:hover,.btn:hover{transform:none;}
  }

/* roulang page: category1 */
:root{
  --primary:#2A6BD4;
  --primary-700:#1F55A8;
  --primary-500:#4A8AE8;
  --primary-50:#EEF4FE;
  --accent:#EE7B33;
  --accent-50:#FDF3EB;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --soft:#F2F6FC;
  --dark:#12263F;
  --dark-2:#17324F;
  --ink-900:#101B2C;
  --ink-700:#2C3E52;
  --ink-600:#4E6076;
  --ink-400:#8A9AAE;
  --border:#E3E9F2;
  --divider:#EEF2F7;
  --input:#D9E2EE;
  --ok:#2FA37A;
  --warn:#D99A22;
  --err:#D9534F;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:999px;
  --r-block:20px;
  --sh-card:0 6px 20px -8px rgba(16,27,44,.12), 0 2px 6px rgba(16,27,44,.05);
  --sh-hover:0 14px 32px -12px rgba(42,107,212,.28);
  --sh-nav:0 1px 0 #E3E9F2;
  --t:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:17px;line-height:1.85;color:var(--ink-600);background:var(--bg);
  padding-top:72px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:.01em;line-height:1.3}
p{margin:0}
:focus-visible{outline:3px solid rgba(42,107,212,.25);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:48px 0}
.section-title{font-size:34px;line-height:1.3;margin-bottom:16px}
.section-sub{font-size:17px;color:var(--ink-600);max-width:800px}
.section-head{margin-bottom:24px}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--primary);
  background:var(--primary-50);border-radius:var(--r-badge);padding:4px 12px;margin-bottom:16px;
}
.eyebrow.accent{color:var(--accent);background:var(--accent-50)}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:72px;
  background:rgba(255,255,255,.96);border-bottom:1px solid var(--border);
  transition:height var(--t);box-shadow:var(--sh-nav);
}
.site-header.scrolled{height:60px}
.header-inner{height:100%;display:flex;align-items:center;gap:32px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;transition:transform var(--t)}
.site-header.scrolled .logo{transform:scale(.94)}
.logo-mark{
  width:36px;height:36px;border-radius:10px;background:var(--primary-50);
  display:inline-flex;align-items:center;justify-content:center;color:var(--primary);flex-shrink:0;
}
.logo-mark svg{display:block}
.logo-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;white-space:nowrap}
.nav-desktop{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-700);
  padding:6px 0;white-space:nowrap;transition:color var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  align-items:center;justify-content:center;color:var(--ink-700);font-size:18px;
  transition:background var(--t),color var(--t);
}
.menu-btn:hover{background:var(--primary-50);color:var(--primary)}

.mobile-panel{
  position:fixed;top:56px;left:0;right:0;bottom:0;z-index:75;background:#fff;
  transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity var(--t),transform var(--t);
  overflow-y:auto;padding-bottom:88px;
}
.mobile-panel.open{opacity:1;transform:translateY(0);pointer-events:auto}
.mobile-panel a.panel-link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 18px;font-size:17px;color:var(--ink-700);
  border-bottom:1px solid var(--divider);
}
.mobile-panel a.panel-link.active{color:var(--primary);font-weight:600}
.mobile-panel .panel-cta{padding:20px 18px}
.panel-cta .btn{width:100%;justify-content:center}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:background var(--t),color var(--t),box-shadow var(--t),transform var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px -8px rgba(42,107,212,.55)}
.btn-primary:hover{background:var(--primary-700);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:var(--primary-50)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#D96A22;transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:15px;font-weight:600;
}
.text-link i{transition:transform var(--t)}
.text-link:hover i{transform:translateX(6px)}
.link-underline{border-bottom:1px solid rgba(42,107,212,.35);padding-bottom:2px}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin:24px 0 0}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#C7D2E1}
.breadcrumb .current{color:var(--ink-400);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60%}

/* ---------- page head ---------- */
.page-head{padding:8px 0 24px}
.page-head-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;margin-top:24px}
.page-title{font-size:46px;line-height:1.25;letter-spacing:.01em}
.page-lead{margin-top:18px;font-size:17px;color:var(--ink-600);max-width:640px}
.head-actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
.page-head-media{
  border-radius:var(--r-block);overflow:hidden;background:var(--primary-50);
  box-shadow:var(--sh-card);height:280px;
}
.page-head-media img{width:100%;height:100%;object-fit:cover}
.page-head-media::after{content:"";position:absolute}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:32px}
.timeline::before{
  content:"";position:absolute;left:31px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--primary-50),var(--border));border-radius:2px;
}
.tl-item{position:relative;display:grid;grid-template-columns:64px 1fr;gap:24px;padding:0 0 40px}
.tl-item:last-child{padding-bottom:0}
.tl-num{
  width:64px;height:64px;border-radius:var(--r-badge);background:#fff;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-card);position:relative;z-index:1;
}
.tl-body h3{font-size:22px;margin-bottom:8px}
.tl-body p{max-width:800px}
.dot-list{margin-top:12px;display:grid;gap:6px}
.dot-list li{position:relative;padding-left:16px;font-size:15px;color:var(--ink-600)}
.dot-list li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--primary);
}

/* ---------- feature rows ---------- */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:40px 0;border-top:1px solid var(--divider);
}
.feature-row:first-child{border-top:0;padding-top:8px}
.feature-row.reverse .feature-media{order:2}
.feature-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);background:var(--primary-50)}
.feature-media img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform var(--t)}
.feature-row:hover .feature-media img{transform:scale(1.03)}
.feature-body h3{font-size:22px;margin-bottom:12px}
.feature-body p{max-width:620px}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  color:var(--primary);background:var(--primary-50);border-radius:var(--r-badge);padding:4px 10px;
}
.chip i{font-size:11px}

/* ---------- compare table ---------- */
.table-wrap{
  margin-top:32px;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow-x:auto;-webkit-overflow-scrolling:touch;
}
table.cmp{width:100%;min-width:760px;border-collapse:collapse;font-size:15px}
table.cmp th,table.cmp td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--divider)}
table.cmp thead th{
  background:var(--primary-50);color:var(--ink-900);font-weight:600;font-size:15px;white-space:nowrap;
}
table.cmp thead th:first-child{color:var(--ink-600);font-weight:500}
table.cmp tbody tr{transition:background var(--t)}
table.cmp tbody tr:hover{background:#F7FAFF}
table.cmp tbody td:first-child{color:var(--ink-700);font-weight:600;white-space:nowrap}
table.cmp tbody tr:last-child td{border-bottom:0}

/* ---------- stats band ---------- */
.stats-band{
  background:var(--primary-50);border-radius:var(--r-block);padding:40px 40px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
}
.stat .num{font-size:52px;font-weight:700;color:var(--primary);line-height:1.1;font-variant-numeric:tabular-nums}
.stat .num .unit{font-size:16px;margin-left:4px}
.stat .desc{font-size:14px;color:var(--ink-400);margin-top:6px}

/* ---------- faq ---------- */
.faq-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;margin-top:32px}
.faq-item{border-bottom:1px solid var(--divider)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color var(--t),background var(--t);
}
.faq-q:hover{color:var(--primary);background:#F7FAFF}
.faq-q .sign{color:var(--primary);font-size:18px;flex-shrink:0;transition:transform var(--t)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 200ms ease-out}
.faq-a p{padding:0 24px 22px;font-size:16px;line-height:1.9;color:var(--ink-600);max-width:820px}
.faq-item.open .faq-a{max-height:400px}

/* ---------- contact card ---------- */
.contact-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:32px;margin-top:32px;
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}
.field label{display:block;font-size:14px;color:var(--ink-700);font-weight:600;margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;height:44px;padding:0 14px;font-size:15px;color:var(--ink-700);
  border:1px solid var(--input);border-radius:var(--r-input);background:#fff;
  transition:border-color var(--t),box-shadow var(--t);font-family:inherit;
}
.field textarea{height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(42,107,212,.15);
}
.field .hint{font-size:12px;color:var(--ink-400);margin-top:6px}
.form-submit{width:100%;margin-top:4px}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--dark);
  background-image:linear-gradient(8deg,#12263F 0%,#17324F 100%);
  border-radius:var(--r-block);padding:48px 48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{color:#fff;font-size:34px;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.72);max-width:640px;font-size:16px}
.cta-actions{display:flex;align-items:center;gap:20px;flex-shrink:0;flex-wrap:wrap}
.cta-actions .white-link{color:#fff;font-size:15px;font-weight:600;opacity:.85}
.cta-actions .white-link:hover{opacity:1;text-decoration:underline;text-underline-offset:4px}

/* ---------- footer ---------- */
.site-footer{
  background:var(--dark);
  background-image:linear-gradient(8deg,#12263F 0%,#17324F 100%);
  color:rgba(255,255,255,.7);margin-top:56px;padding:64px 0 0;
}
.site-footer .f-top{border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:48px}
.f-brand-name{font-size:17px;font-weight:700;color:#fff}
.site-footer p{font-size:14px;line-height:1.8}
.f-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.site-footer ul li{margin-bottom:10px}
.f-link{font-size:14px;color:rgba(255,255,255,.7);transition:color var(--t),transform var(--t);display:inline-block}
.f-link:hover{color:#fff;transform:translateX(2px)}
.f-qr{
  width:96px;height:96px;border-radius:12px;background:rgba(255,255,255,.08);
  border:1px dashed rgba(255,255,255,.3);display:flex;align-items:center;justify-content:center;
  font-size:12px;line-height:1.5;color:rgba(255,255,255,.6);text-align:center;
}
.f-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0 28px;font-size:13px;color:rgba(255,255,255,.55);flex-wrap:wrap;
}
.f-acc{border-bottom:1px solid rgba(255,255,255,.12)}
.f-acc summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;
  height:52px;font-size:15px;font-weight:600;color:#fff;cursor:pointer;
}
.f-acc summary::-webkit-details-marker{display:none}
.f-acc summary .chev{color:rgba(255,255,255,.6);transition:transform var(--t)}
.f-acc[open] summary .chev{transform:rotate(180deg)}
.f-acc .acc-body{padding:4px 0 16px}

/* ---------- mobile tabbar ---------- */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--border);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-item{
  flex:1;height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--ink-400);position:relative;transition:color var(--t);
}
.tab-item i{font-size:18px}
.tab-item.active{color:var(--primary)}
.tab-item.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:24px;height:3px;border-radius:0 0 3px 3px;background:var(--primary);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity 400ms ease-out,transform 400ms ease-out}
.reveal.is-visible{opacity:1;transform:translateY(0)}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .page-head-grid{grid-template-columns:1fr;gap:32px}
  .page-head-media{height:240px}
  .page-title{font-size:36px}
  .feature-row{grid-template-columns:1fr;gap:28px}
  .feature-row.reverse .feature-media{order:0}
  .stats-band{grid-template-columns:repeat(2,1fr);padding:32px}
  .stat .num{font-size:42px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px}
  .cta-band h2{font-size:28px}
  .section-title{font-size:28px}
}
@media (max-width:767px){
  body{padding-top:56px;padding-bottom:88px;font-size:16px}
  .container{padding:0 18px}
  .site-header{height:56px}
  .site-header.scrolled{height:56px}
  .logo-text{font-size:15px}
  .logo-mark{width:32px;height:32px}
  .nav-desktop{display:none}
  .header-cta{display:none}
  .menu-btn{display:flex}
  .mobile-tabbar{display:flex}
  .section{padding:28px 0}
  .page-title{font-size:30px}
  .page-lead{font-size:15px;margin-top:14px}
  .page-head-media{height:200px}
  .timeline::before{left:23px}
  .tl-item{grid-template-columns:48px 1fr;gap:16px;padding-bottom:32px}
  .tl-num{width:48px;height:48px;font-size:17px}
  .tl-body h3{font-size:19px}
  .section-title{font-size:24px}
  .feature-body h3{font-size:19px}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:24px;padding:24px}
  .stat .num{font-size:34px}
  .field-row{grid-template-columns:1fr}
  .contact-card{padding:22px}
  .faq-q{padding:16px 18px;font-size:16px}
  .faq-a p{padding:0 18px 18px}
  .cta-band{padding:28px 22px;border-radius:var(--r-card)}
  .cta-band h2{font-size:22px}
  .cta-band p{font-size:15px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .site-footer{padding:40px 0 0;margin-top:40px}
  .f-bottom{flex-direction:column;align-items:flex-start;gap:6px;padding-bottom:20px}
  .breadcrumb{margin-top:16px}
}
@media (max-width:519px){
  .page-title{font-size:27px}
  .head-actions .btn{width:100%}
  .stats-band{grid-template-columns:1fr}
}

/* roulang page: category2 */
:root{
  --primary:#2A6BD4;
  --primary-700:#1F55A8;
  --primary-500:#4A8AE8;
  --primary-50:#EEF4FE;
  --accent:#EE7B33;
  --accent-50:#FDF3EB;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --soft:#F2F6FC;
  --dark:#12263F;
  --dark-2:#17324F;
  --ink-900:#101B2C;
  --ink-700:#2C3E52;
  --ink-600:#4E6076;
  --ink-400:#8A9AAE;
  --border:#E3E9F2;
  --line:#EEF2F7;
  --input:#D9E2EE;
  --ok:#2FA37A;
  --warn:#D99A22;
  --err:#D9534F;
  --r-card:16px;
  --r-lg:20px;
  --r-img:12px;
  --r-btn:10px;
  --sh-card:0 6px 20px -8px rgba(16,27,44,.12), 0 2px 6px rgba(16,27,44,.05);
  --sh-hover:0 14px 32px -12px rgba(42,107,212,.28);
  --sec-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:17px;line-height:1.85;color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease-out,background-color .2s ease-out,opacity .2s ease-out}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:.01em}
h1{font-size:46px;line-height:1.25}
h2{font-size:34px;line-height:1.3}
h3{font-size:22px;line-height:1.4}
h4{font-size:18px;line-height:1.5}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(42,107,212,.35);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--sec-y) 0}
.section-tight{padding:64px 0}
.soft-band{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:900px;margin-bottom:24px}
.sec-head .eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--primary);background:var(--primary-50);padding:4px 12px;border-radius:999px;margin-bottom:16px}
.sec-head h2{margin-bottom:14px}
.sec-head p{font-size:17px;color:var(--ink-600);max-width:800px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center p{margin-left:auto;margin-right:auto}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border);
  transition:height .2s ease-out;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .2s ease-out}
.site-header.scrolled .header-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:700}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;
  background:var(--primary-50);color:var(--primary);
  transition:transform .2s ease-out;
}
.site-header.scrolled .logo-mark{transform:scale(.9)}
.logo-text{font-size:18px;letter-spacing:.01em;white-space:nowrap}
.nav-desktop{display:flex;align-items:center;gap:32px}
.nav-link{position:relative;font-size:16px;color:var(--ink-700);padding:6px 0;font-weight:500}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.menu-btn{
  display:none;width:44px;height:44px;border:1px solid var(--border);background:#fff;
  border-radius:10px;color:var(--ink-700);font-size:18px;line-height:1;
}
.menu-btn:hover{color:var(--primary);border-color:var(--primary-500)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);font-size:16px;font-weight:600;
  border:1px solid transparent;transition:all .2s ease-out;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-700);transform:translateY(-1px)}
.btn-primary:active{transform:none}
.btn-ghost{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-ghost:hover{background:var(--primary-50)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#d9691f;transform:translateY(-1px)}
.btn-accent:active{transform:none}
.btn-sm{padding:9px 18px;font-size:15px}
.btn-link{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.btn-link i{transition:transform .2s ease-out}
.btn-link:hover i{transform:translateX(6px)}
.btn-block{width:100%}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--primary-50);color:var(--primary);
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
}
.badge-accent{background:var(--accent-50);color:#c25f1c}

/* ---------- Page hero ---------- */
.page-hero{
  background:linear-gradient(180deg,#EEF4FE 0%,#F6F8FB 78%);
  border-bottom:1px solid var(--line);
  padding:28px 0 0;
}
.crumbs{font-size:13px;color:var(--ink-400);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:#C8D3E2}
.crumbs .now{color:var(--ink-400)}
.page-hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding:40px 0 64px}
.page-hero h1{margin:18px 0 18px}
.lead{font-size:18px;line-height:1.8;color:var(--ink-600);max-width:620px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.page-hero-media{position:relative}
.page-hero-media img{
  width:100%;height:300px;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--border);box-shadow:var(--sh-card);
}
.hero-chip{
  position:absolute;left:-16px;bottom:-18px;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);padding:16px 20px;box-shadow:var(--sh-card);
}
.hero-chip .chip-num{font-size:26px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-chip .chip-txt{font-size:13px;color:var(--ink-400)}

/* ---------- Flow strip ---------- */
.flow-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
.flow-step{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-card);position:relative;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#D5E3F8}
.flow-step .num{
  display:inline-block;font-size:14px;font-weight:700;color:var(--primary);
  background:var(--primary-50);border-radius:999px;padding:3px 12px;margin-bottom:14px;
}
.flow-step h3{font-size:19px;margin-bottom:10px}
.flow-step p{font-size:15px;line-height:1.8;color:var(--ink-600)}
.flow-step::after{
  content:"";position:absolute;right:-14px;top:54px;width:8px;height:8px;border-right:2px solid #C9DCF7;border-top:2px solid #C9DCF7;transform:rotate(45deg);
}
.flow-step:last-child::after{display:none}

/* ---------- Range block ---------- */
.range-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.range-media img{width:100%;height:100%;min-height:360px;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--border);box-shadow:var(--sh-card)}
.range-list{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:8px 24px}
.range-item{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);align-items:flex-start}
.range-item:last-child{border-bottom:0}
.range-item .dot{
  flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--primary);margin-top:12px;
}
.range-item h4{font-size:17px;font-weight:600;color:var(--ink-900);margin-bottom:4px}
.range-item p{font-size:15px;line-height:1.8;color:var(--ink-600)}

/* ---------- Stats band ---------- */
.stats-band{background:var(--primary-50);border-top:1px solid #E1EBFA;border-bottom:1px solid #E1EBFA}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;padding:12px 0}
.stat .num{font-size:52px;font-weight:700;color:var(--primary);line-height:1.1;font-variant-numeric:tabular-nums}
.stat .num span{font-size:16px;font-weight:600;margin-left:4px}
.stat .txt{font-size:14px;color:var(--ink-400);margin-top:10px;line-height:1.7}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-aside h2{margin-bottom:14px}
.faq-aside p{font-size:16px;color:var(--ink-600);margin-bottom:24px}
.faq-aside .aside-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-card);
}
.faq-aside .aside-card .t{font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:6px}
.faq-aside .aside-card .d{font-size:14px;color:var(--ink-400);line-height:1.75}
.faq-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 26px;font-size:17px;font-weight:600;color:var(--ink-900);
  background:transparent;border:0;text-align:left;line-height:1.6;
}
.faq-q:hover{color:var(--primary)}
.faq-q .sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--primary-50);
  color:var(--primary);font-size:15px;font-weight:600;line-height:1;
  display:inline-flex;align-items:center;justify-content:center;transition:background-color .2s ease-out;
}
.faq-item.open .faq-q .sign{background:var(--primary);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out}
.faq-item.open .faq-a{max-height:420px}
.faq-a-inner{padding:0 26px 22px;font-size:16px;line-height:1.9;color:var(--ink-600)}

/* ---------- Contact card ---------- */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.contact-side h2{margin-bottom:16px}
.contact-side p{font-size:16px;margin-bottom:20px}
.contact-meta li{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--line);font-size:16px}
.contact-meta li:last-child{border-bottom:0}
.contact-meta i{color:var(--primary);margin-top:6px;width:18px;text-align:center}
.form-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:32px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:14px;font-weight:600;color:var(--ink-700)}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:16px;color:var(--ink-900);
  border:1px solid var(--input);border-radius:var(--r-btn);background:#fff;
  padding:11px 14px;line-height:1.5;transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field input,.field select{height:44px;padding:0 14px}
.field textarea{min-height:120px;resize:vertical;padding:12px 14px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(42,107,212,.15);
}
.field .hint{font-size:13px;color:var(--ink-400)}
.form-note{font-size:13px;color:var(--ink-400);margin-top:14px}
.form-alert{
  display:none;margin-top:16px;padding:12px 16px;border-radius:var(--r-btn);
  font-size:15px;border:1px solid #BFE5D5;background:#F1FAF6;color:#1F7A5A;
}
.form-alert.show{display:block}

/* ---------- CTA band ---------- */
.cta-card{
  background:var(--primary-50);border:1px solid #DEE9FA;border-radius:var(--r-lg);
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.cta-card h2{font-size:30px;margin-bottom:12px}
.cta-card p{font-size:17px;color:var(--ink-600);max-width:640px}

/* ---------- Footer ---------- */
.site-footer{
  background:linear-gradient(8deg,#12263F 0%,#17324F 100%);
  color:rgba(255,255,255,.72);
  padding:72px 0 0;font-size:15px;line-height:1.85;
}
.site-footer .f-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;padding-bottom:40px}
.f-brand{display:flex;align-items:center;gap:12px;color:#fff}
.site-footer .logo-mark{background:rgba(255,255,255,.12);color:#fff}
.f-brand-name{font-size:18px;font-weight:700;color:#fff}
.site-footer .f-desc{margin-top:16px;color:rgba(255,255,255,.7);line-height:1.85}
.site-footer .f-line{margin-top:10px;color:rgba(255,255,255,.7)}
.f-title{font-size:16px;font-weight:700;color:#fff;margin-bottom:18px}
.f-list li{margin-bottom:12px}
.f-link{color:rgba(255,255,255,.7);display:inline-block;transition:color .2s ease-out,transform .2s ease-out}
.f-link:hover{color:#fff;transform:translateX(2px)}
.f-qr{
  width:96px;height:96px;margin-top:16px;border-radius:10px;
  background:rgba(255,255,255,.08);border:1px dashed rgba(255,255,255,.28);
  color:rgba(255,255,255,.7);font-size:12px;line-height:1.5;text-align:center;
  display:flex;align-items:center;justify-content:center;
}
.f-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.f-bottom-links{display:flex;gap:20px}
.f-bottom-links a{color:rgba(255,255,255,.55)}
.f-bottom-links a:hover{color:#fff}
.f-mobile{display:none}
.f-acc-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  background:transparent;border:0;border-top:1px solid rgba(255,255,255,.12);
  color:#fff;font-size:16px;font-weight:600;padding:16px 0;
}
.f-acc-btn i{color:rgba(255,255,255,.6);transition:transform .2s ease-out}
.f-acc-btn[aria-expanded="true"] i{transform:rotate(180deg)}
.f-acc-panel{display:none;padding-bottom:16px}
.f-acc-panel.open{display:block}
.f-acc-panel li{margin-bottom:10px}

/* ---------- Mobile nav panel & tabbar ---------- */
.mobile-panel{
  display:none;position:fixed;left:0;right:0;top:56px;bottom:0;background:#fff;z-index:999;
  padding:8px 18px 32px;flex-direction:column;overflow-y:auto;
}
.mobile-panel.open{display:flex}
.mobile-panel .mp-link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;font-size:17px;color:var(--ink-700);border-bottom:1px solid var(--line);
}
.mobile-panel .mp-link.active{color:var(--primary);font-weight:600}
.mobile-panel .mp-cta{margin-top:24px}
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1000;
  background:rgba(255,255,255,.98);border-top:1px solid var(--border);
  padding-bottom:env(safe-area-inset-bottom);
  transition:transform .25s ease-out;
}
.mobile-tabbar.hide{transform:translateY(100%)}
.tabbar-inner{display:flex;height:56px}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--ink-400);position:relative;
}
.tab-item i{font-size:18px;line-height:1}
.tab-item.active{color:var(--primary)}
.tab-item.active::before{
  content:"";position:absolute;top:0;width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--primary);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .4s ease-out,transform .4s ease-out}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  :root{--sec-y:72px}
  .container{padding:0 24px}
  h1{font-size:38px}
  h2{font-size:28px}
  .page-hero-grid{grid-template-columns:1fr;gap:32px;padding:32px 0 56px}
  .page-hero-media img{height:240px}
  .hero-chip{left:16px;bottom:-16px}
  .flow-strip{grid-template-columns:repeat(2,1fr)}
  .flow-step::after{display:none}
  .range-grid,.faq-wrap,.contact-grid{grid-template-columns:1fr;gap:32px}
  .range-media img{min-height:260px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .cta-card{flex-direction:column;align-items:flex-start;padding:40px}
  .site-footer .f-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  body{font-size:16px;padding-bottom:72px}
  .container{padding:0 18px}
  :root{--sec-y:56px}
  h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:19px}
  .nav-desktop,.header-cta{display:none}
  .menu-btn{display:inline-flex;align-items:center;justify-content:center}
  .header-inner{height:56px}
  .site-header.scrolled .header-inner{height:56px}
  .logo-text{font-size:16px}
  .mobile-tabbar{display:block}
  .page-hero{padding-top:18px}
  .page-hero-media img{height:200px}
  .page-hero-media img{height:200px}
  .hero-chip{padding:12px 16px;left:12px;bottom:-14px}
  .hero-chip .chip-num{font-size:22px}
  .hero-actions .btn{width:100%}
  .flow-strip{grid-template-columns:1fr;gap:16px}
  .range-list{padding:4px 20px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .stat .num{font-size:38px}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:22px}
  .faq-q{padding:18px 20px;font-size:16px}
  .faq-a-inner{padding:0 20px 20px;font-size:15px}
  .cta-card{padding:28px 22px}
  .cta-card h2{font-size:24px}
  .cta-card .btn{width:100%}
  .site-footer{padding-top:48px}
  .site-footer .f-grid{display:none}
  .f-mobile{display:block}
  .f-bottom{flex-direction:column;align-items:flex-start;gap:10px;padding-bottom:96px}
  .reveal{opacity:1;transform:none;transition:none}
}

/* roulang page: category3 */
:root{
  --primary:#2A6BD4; --primary-700:#1F55A8; --primary-500:#4A8AE8; --primary-50:#EEF4FE;
  --accent:#EE7B33; --accent-50:#FDF3EB;
  --bg:#F6F8FB; --surface:#FFFFFF; --soft:#F2F6FC; --dark:#12263F; --dark-2:#17324F;
  --ink-900:#101B2C; --ink-700:#2C3E52; --ink-600:#4E6076; --ink-400:#8A9AAE;
  --border:#E3E9F2; --divider:#EEF2F7; --input:#D9E2EE;
  --ok:#2FA37A; --warn:#D99A22; --err:#D9534F;
  --r-card:16px; --r-img:12px; --r-btn:10px; --r-lg:20px;
  --sh-card:0 6px 20px -8px rgba(16,27,44,.12), 0 2px 6px rgba(16,27,44,.05);
  --sh-hover:0 14px 32px -12px rgba(42,107,212,.28);
  --font: "Inter", system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0; font-family:var(--font); font-size:17px; line-height:1.85;
  color:var(--ink-600); background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font);color:var(--ink-900);margin:0;}
.section h2,.section h3,.section h4{margin:0;}
.section p{margin:0 0 1.1em;}
.section p:last-child{margin-bottom:0;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (max-width:1024px){ .container{padding:0 24px;} }
@media (max-width:640px){ .container{padding:0 18px;} }

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:72px;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border);
  transition:height .2s ease-out, box-shadow .2s ease-out;
}
.site-header.shrink{height:60px;box-shadow:0 1px 0 var(--border),0 6px 18px -14px rgba(16,27,44,.25);}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-50);color:var(--primary);flex:0 0 auto;
  transition:transform .2s ease-out;
}
.logo-text{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;white-space:nowrap;}
.site-header.shrink .logo-mark{transform:scale(.9);}
.nav-desktop{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;font-size:15.5px;color:var(--ink-700);
  border-radius:8px;transition:color .2s ease-out, background .2s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--primary);
  transform:scaleX(0);transform-origin:center;transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--primary);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--border);
  background:#fff;color:var(--ink-700);font-size:18px;align-items:center;justify-content:center;cursor:pointer;
}
.menu-btn:hover{color:var(--primary);border-color:#c9dcf7;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);font-size:15.5px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-700);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:#fff;border-color:var(--primary);color:var(--primary);}
.btn-outline:hover{background:var(--primary-50);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#d9691f;transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:14.5px;}
.btn-block{width:100%;}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15.5px;}
.btn-text i{transition:transform .2s ease-out;}
.btn-text:hover i{transform:translateX(6px);}
.btn:focus-visible,a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:none;box-shadow:0 0 0 3px rgba(42,107,212,.25);
}

/* 移动面板 */
.mobile-panel{
  display:none;position:fixed;inset:56px 0 0 0;background:#fff;z-index:79;
  padding:8px 18px 24px;overflow-y:auto;
}
.mobile-panel.open{display:block;}
.mobile-panel a.panel-link{
  display:block;line-height:52px;font-size:17px;color:var(--ink-700);
  border-bottom:1px solid var(--divider);padding:0 4px;
}
.mobile-panel a.panel-link.active{color:var(--primary);font-weight:600;}
.mobile-panel .panel-cta{margin-top:20px;}

/* 移动底部 Tab */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:85;background:#fff;
  border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom);
  transition:transform .25s ease-out;
}
.mobile-tab.hide{transform:translateY(100%);}
.mobile-tab .tab-inner{display:flex;height:56px;}
.tab-item{
  position:relative;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  color:var(--ink-400);font-size:11px;line-height:1;
}
.tab-item i{font-size:17px;height:22px;display:flex;align-items:center;}
.tab-item::before{
  content:"";position:absolute;top:0;width:22px;height:3px;border-radius:0 0 3px 3px;background:transparent;
}
.tab-item.active{color:var(--primary);}
.tab-item.active::before{background:var(--primary);}

/* ============ 页面板块 ============ */
main{padding-top:72px;}
.section{padding:96px 0;}
.section-soft{background:var(--soft);}
@media (max-width:1024px){ .section{padding:72px 0;} main{padding-top:72px;} }
@media (max-width:640px){ .section{padding:56px 0;} }

.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--primary);
  background:var(--primary-50);border-radius:999px;padding:4px 12px;margin-bottom:16px;
}
.section-title{font-size:34px;line-height:1.3;font-weight:700;letter-spacing:.01em;}
.section-lead{font-size:17px;color:var(--ink-600);max-width:800px;margin-top:16px;}
.section-head{margin-bottom:32px;}
@media (max-width:640px){ .section-title{font-size:24px;} .section-lead{font-size:16px;} }

/* Hero */
.page-hero{background:linear-gradient(180deg,#FFFFFF 0%, var(--bg) 100%);padding:56px 0 64px;position:relative;overflow:hidden;}
.breadcrumb{font-size:13px;color:var(--ink-400);margin-bottom:20px;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span.sep{margin:0 8px;}
.breadcrumb .current{color:var(--ink-400);}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.page-h1{font-size:46px;line-height:1.25;font-weight:700;letter-spacing:.01em;}
.hero-sub{font-size:17px;color:var(--ink-600);margin-top:20px;max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-banner{
  position:relative;border-radius:var(--r-lg);overflow:hidden;height:300px;box-shadow:var(--sh-card);
  border:1px solid var(--border);
}
.hero-banner img{width:100%;height:100%;object-fit:cover;}
.hero-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(246,248,251,.28) 0%,rgba(246,248,251,.68) 100%);
}
.hero-banner .banner-note{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:2;background:rgba(255,255,255,.96);
  border-radius:var(--r-card);padding:16px 20px;box-shadow:var(--sh-card);
  font-size:14px;color:var(--ink-700);
}
.hero-banner .banner-note strong{color:var(--primary);font-size:20px;font-weight:700;margin-right:6px;}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .page-h1{font-size:34px;}
  .hero-banner{height:260px;}
}
@media (max-width:640px){
  .page-hero{padding:32px 0 48px;}
  .page-h1{font-size:30px;}
  .hero-banner{height:220px;}
}

/* 数据带 */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-item{padding-right:8px;}
.stat-num{font-size:52px;line-height:1.05;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;}
.stat-num .unit{font-size:16px;font-weight:600;margin-left:2px;}
.stat-desc{font-size:14px;color:var(--ink-400);line-height:1.6;margin-top:10px;}
@media (max-width:1024px){ .stat-band{grid-template-columns:repeat(2,1fr);row-gap:32px;} .stat-num{font-size:40px;} }
@media (max-width:640px){ .stat-band{grid-template-columns:repeat(2,1fr);gap:20px;} .stat-num{font-size:34px;} }

/* 案例卡网格 */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;align-items:start;}
.case-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#cfe0f7;}
.case-card:hover .case-title{color:var(--primary);}
.case-card:nth-child(even){margin-top:36px;}
.case-cover{aspect-ratio:16/9;overflow:hidden;background:var(--primary-50);}
.case-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.case-card:hover .case-cover img{transform:scale(1.02);}
.case-body{padding:24px;}
.case-title{font-size:22px;line-height:1.4;font-weight:700;transition:color .2s ease-out;}
.case-text{font-size:15.5px;line-height:1.85;color:var(--ink-600);margin-top:12px;}
.case-metrics{display:flex;flex-wrap:wrap;gap:24px;margin-top:20px;padding-top:20px;border-top:1px solid var(--divider);}
.case-metric .m-num{font-size:26px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.2;}
.case-metric .m-label{font-size:13px;color:var(--ink-400);margin-top:2px;}
.tag{
  display:inline-block;border-radius:999px;background:var(--primary-50);color:var(--primary);
  font-size:12px;padding:4px 10px;line-height:1.4;font-weight:600;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
@media (max-width:1024px){
  .case-grid{grid-template-columns:1fr;gap:24px;}
  .case-card:nth-child(even){margin-top:0;}
}
@media (max-width:640px){
  .case-body{padding:20px;}
  .case-title{font-size:19px;}
}

/* 分栏列表 */
.split{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start;}
.item-list{border-top:1px solid var(--divider);}
.item-row{
  display:flex;gap:20px;padding:22px 16px;border-bottom:1px solid var(--divider);
  transition:background .2s ease-out;
}
.item-row:hover{background:#F7FAFF;}
.item-row:hover .item-title{color:var(--primary);}
.item-index{
  flex:0 0 auto;width:34px;height:34px;border-radius:9px;background:var(--primary-50);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
}
.item-title{font-size:17.5px;font-weight:700;color:var(--ink-900);transition:color .2s ease-out;}
.item-text{font-size:15.5px;color:var(--ink-600);line-height:1.8;margin-top:6px;}
@media (max-width:1024px){ .split{grid-template-columns:1fr;gap:32px;} }

/* 证言 */
.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;align-items:start;}
.quote-card{
  position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:32px 28px 24px;box-shadow:var(--sh-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.quote-mark{font-size:44px;line-height:1;color:var(--primary-50);font-weight:700;margin-bottom:4px;}
.quote-text{font-size:16.5px;line-height:1.9;color:var(--ink-700);}
.quote-person{display:flex;align-items:center;gap:12px;margin-top:24px;padding-top:20px;border-top:1px solid var(--divider);}
.quote-avatar{width:40px;height:40px;border-radius:50%;overflow:hidden;flex:0 0 auto;background:var(--primary-50);}
.quote-avatar img{width:100%;height:100%;object-fit:cover;}
.quote-name{font-size:15px;font-weight:700;color:var(--ink-900);line-height:1.4;}
.quote-role{font-size:13px;color:var(--ink-400);line-height:1.5;}
@media (max-width:1024px){ .quote-grid{grid-template-columns:1fr;} }

/* FAQ */
.faq-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--divider);}
.faq-item:last-child{border-bottom:none;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:none;border:none;text-align:left;cursor:pointer;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .2s ease-out,background .2s ease-out;
}
.faq-q:hover{color:var(--primary);background:#F7FAFF;}
.faq-icon{color:var(--primary);font-size:15px;flex:0 0 auto;transition:transform .2s ease-out;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out;}
.faq-a-inner{padding:0 24px 22px;font-size:16px;line-height:1.9;color:var(--ink-600);max-width:820px;}
@media (max-width:640px){ .faq-q{font-size:16px;padding:18px;} .faq-a-inner{padding:0 18px 18px;} }

/* CTA 带 */
.cta-band{
  background:linear-gradient(8deg,var(--dark) 0%,var(--dark-2) 100%);
  color:#fff;border-radius:0;padding:72px 0;
}
.cta-grid{display:flex;align-items:center;justify-content:space-between;gap:40px;}
.cta-title{font-size:30px;line-height:1.35;font-weight:700;color:#fff;}
.cta-sub{font-size:16px;color:rgba(255,255,255,.72);margin-top:12px;max-width:640px;line-height:1.85;}
.cta-side{display:flex;flex-direction:column;align-items:flex-start;gap:14px;flex:0 0 auto;}
.cta-link{color:rgba(255,255,255,.85);font-size:15px;font-weight:600;}
.cta-link:hover{color:#fff;}
@media (max-width:1024px){
  .cta-grid{flex-direction:column;align-items:flex-start;gap:28px;}
  .cta-band{padding:56px 0;}
  .cta-title{font-size:24px;}
}

/* 页脚 */
.site-footer{
  background:linear-gradient(8deg,var(--dark) 0%,var(--dark-2) 100%);
  color:rgba(255,255,255,.78);font-size:15px;padding:64px 0 28px;
}
.f-top{padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12);}
.f-brand-name{font-size:18px;font-weight:700;color:#fff;}
.f-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.site-footer ul{list-style:none;margin:0;padding:0;}
.site-footer ul li{margin-bottom:10px;}
.f-link{color:rgba(255,255,255,.7);transition:color .2s ease-out,transform .2s ease-out;display:inline-block;}
.f-link:hover{color:#fff;transform:translateX(2px);}
.f-qr{
  width:96px;height:96px;border-radius:var(--r-img);border:1px dashed rgba(255,255,255,.35);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;line-height:1.5;color:rgba(255,255,255,.6);
}
.f-bottom{
  padding-top:22px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.f-bottom a{color:rgba(255,255,255,.55);margin-left:18px;}
.f-bottom a:hover{color:#fff;}
.f-acc{border-bottom:1px solid rgba(255,255,255,.12);}
.f-acc summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  padding:16px 0;font-size:15px;font-weight:600;color:#fff;
}
.f-acc summary::-webkit-details-marker{display:none;}
.f-acc summary::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:rgba(255,255,255,.6);transition:transform .2s ease-out;}
.f-acc[open] summary::after{transform:rotate(180deg);}
.f-acc ul{padding-bottom:12px;}

@media (max-width:767px){
  body{padding-bottom:72px;}
  main{padding-top:56px;}
  .nav-desktop{display:none;}
  .header-cta{display:none;}
  .menu-btn{display:inline-flex;}
  .mobile-tab{display:block;}
  .site-header{height:56px;background:#fff;}
  .site-header.shrink{height:56px;}
  .logo-text{font-size:16px;}
  .logo-mark{width:34px;height:34px;}
}
@media (min-width:768px){
  .mobile-tab{display:none;}
  .mobile-panel{display:none !important;}
}

/* roulang page: category4 */
:root{
  --primary:#2A6BD4;
  --primary-700:#1F55A8;
  --primary-500:#4A8AE8;
  --primary-50:#EEF4FE;
  --accent:#EE7B33;
  --accent-50:#FDF3EB;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --soft:#F2F6FC;
  --dark:#12263F;
  --ink-900:#101B2C;
  --ink-700:#2C3E52;
  --ink-600:#4E6076;
  --ink-400:#8A9AAE;
  --border:#E3E9F2;
  --line:#EEF2F7;
  --input-border:#D9E2EE;
  --success:#2FA37A;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-lg:20px;
  --shadow-card:0 6px 20px -8px rgba(16,27,44,.12), 0 2px 6px rgba(16,27,44,.05);
  --shadow-hover:0 14px 32px -12px rgba(42,107,212,.28);
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
html body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:Inter,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
html a{color:var(--primary);text-decoration:none;transition:color var(--ease),background-color var(--ease)}
html img{max-width:100%;display:block}
html ul{margin:0;padding:0;list-style:none}
html button,html input,html select,html textarea{font:inherit;color:inherit}
h1,h2,h3,h4{color:var(--ink-900);font-weight:700;line-height:1.3;margin:0}
main h1{font-size:46px;line-height:1.25;letter-spacing:.01em;margin:16px 0 0;color:var(--ink-900)}
main h2{font-size:34px;line-height:1.3;margin:0;color:var(--ink-900)}
main h3{font-size:22px;line-height:1.4;margin:0;color:var(--ink-900)}
main p{margin:0 0 1.2em}
:focus-visible{outline:3px solid rgba(42,107,212,.28);outline-offset:2px;border-radius:6px}

/* 容器与板块 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-soft{background:var(--soft)}
.section-head{max-width:820px;margin-bottom:40px}
.section-head p{margin:14px 0 0;color:var(--ink-600);max-width:800px}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--primary);background:var(--primary-50);padding:4px 12px;border-radius:999px;margin-bottom:16px}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);border-bottom:1px solid var(--border);transition:height var(--ease)}
.header-inner{height:72px;display:flex;align-items:center;gap:24px;transition:height var(--ease)}
.site-header.scrolled .header-inner{height:60px}
.site-header.scrolled .logo-mark{transform:scale(.9)}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);flex-shrink:0}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--primary-50);color:var(--primary);display:inline-flex;align-items:center;justify-content:center;transition:transform var(--ease);flex-shrink:0}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.nav-desktop{display:flex;align-items:center;gap:6px;margin:0 auto}
.nav-link{position:relative;padding:8px 14px;font-size:15px;color:var(--ink-700);border-radius:8px;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform var(--ease)}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.menu-btn{display:none;width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:10px;color:var(--ink-700);align-items:center;justify-content:center;cursor:pointer;transition:color var(--ease),border-color var(--ease)}
.menu-btn:hover{color:var(--primary);border-color:var(--primary)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-btn);font-weight:600;font-size:15px;padding:12px 24px;border:1px solid transparent;cursor:pointer;transition:background-color var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-700);transform:translateY(-1px)}
.btn-primary:active{transform:none}
.btn-outline{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-50)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px}
.link-arrow i{transition:transform var(--ease)}
.link-arrow:hover i{transform:translateX(6px)}

/* 面包屑 */
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--ink-400)}
.breadcrumb a{color:var(--ink-400)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#C6D2E2}

/* 页头 */
.page-hero{padding:48px 0 72px;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.badge-accent{display:inline-flex;align-items:center;gap:8px;background:var(--accent-50);color:#B85A1E;border:1px solid #F6DCC7;font-size:13px;font-weight:600;padding:5px 12px;border-radius:999px;margin:18px 0 0}
.hero-lead{margin:18px 0 0;font-size:18px;line-height:1.8;color:var(--ink-600);max-width:540px}
.hero-actions{margin-top:28px;display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.hero-media img{width:100%;height:300px;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}

/* 左右分栏 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;box-shadow:var(--shadow-card)}
.check-list{margin-top:8px}
.check-list li{position:relative;padding-left:26px;margin-bottom:12px;line-height:1.8;color:var(--ink-600)}
.check-list li::before{content:"";position:absolute;left:8px;top:13px;width:6px;height:6px;border-radius:2px;background:var(--primary)}

/* 团队卡片 */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.team-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.team-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D9E6FA}
.team-card:hover h3{color:var(--primary)}
.team-card h3{font-size:19px;margin-bottom:10px;transition:color var(--ease)}
.team-card p{margin:0;font-size:15px;line-height:1.8;color:var(--ink-600)}
.icon-box{width:44px;height:44px;border-radius:12px;background:var(--primary-50);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:18px}

/* 时间线 */
.timeline{position:relative;margin-top:8px}
.timeline::before{content:"";position:absolute;left:15px;top:10px;bottom:10px;width:2px;background:var(--border)}
.tl-item{position:relative;padding-left:60px;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{position:absolute;left:0;top:2px;width:32px;height:32px;border-radius:999px;background:var(--primary-50);border:1px solid #D7E4FA;color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
.tl-year{display:inline-block;font-size:15px;font-weight:700;color:var(--primary);letter-spacing:.02em;margin-bottom:6px}
.tl-item h3{font-size:19px;margin-bottom:8px}
.tl-item p{margin:0;font-size:15px;line-height:1.8;color:var(--ink-600);max-width:800px}
.timeline-wrap{max-width:860px}

/* 联系区 */
.contact-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start}
.form-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:32px;box-shadow:var(--shadow-card)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--input-border);border-radius:var(--radius-btn);padding:10px 14px;background:#fff;font-size:15px;transition:border-color var(--ease),box-shadow var(--ease)}
.field input,.field select{height:44px}
.field textarea{resize:vertical;min-height:112px;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(42,107,212,.15)}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-400)}
.form-tip{margin:14px 0 0;font-size:14px;color:var(--success);min-height:20px}
.info-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-card)}
.info-row{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--line)}
.info-row:last-child{border-bottom:none;padding-bottom:0}
.info-row i{color:var(--primary);margin-top:6px;font-size:15px}
.info-row strong{display:block;font-size:15px;color:var(--ink-900);margin-bottom:2px}
.info-row p{margin:0;font-size:14.5px;line-height:1.7;color:var(--ink-600)}
.map-box{margin-top:24px;height:184px;border-radius:var(--radius-card);border:1px solid #DCE7F9;background:var(--primary-50);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;padding:0 20px;color:var(--primary)}
.map-box i{font-size:26px}
.map-box span{font-size:14px;color:var(--ink-600);line-height:1.7}

/* CTA 卡 */
.cta-soft{background:var(--primary-50);border:1px solid #DCE7F9;border-radius:var(--radius-lg);padding:44px;display:flex;align-items:center;justify-content:space-between;gap:36px}
.cta-soft h2{font-size:26px;margin-bottom:10px}
.cta-soft p{margin:0;color:var(--ink-600);max-width:660px}

/* 页脚 */
.site-footer{background:linear-gradient(115deg,#12263F 0%,#17324F 100%);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.f-top{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12)}
.f-brand{display:flex;align-items:center;gap:12px}
.f-brand-name{font-size:17px;font-weight:700;color:#fff;letter-spacing:.01em}
.f-desc{margin:16px 0 12px;line-height:1.8;font-size:14.5px;color:rgba(255,255,255,.72)}
.f-line{margin:0 0 6px;font-size:14.5px;color:rgba(255,255,255,.72)}
.f-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.f-link{display:inline-block;color:rgba(255,255,255,.72);font-size:14.5px;line-height:2.1;transition:color var(--ease),transform var(--ease)}
.f-link:hover{color:#fff;transform:translateX(2px)}
.f-qr{margin-top:18px;width:96px;height:96px;border-radius:12px;border:1px dashed rgba(255,255,255,.3);display:flex;align-items:center;justify-content:center;text-align:center;font-size:12px;line-height:1.6;color:rgba(255,255,255,.55)}
.f-mobile{display:none;padding:32px 0 8px}
.f-mobile details{border-bottom:1px solid rgba(255,255,255,.12);padding:4px 0}
.f-mobile summary{display:flex;align-items:center;justify-content:space-between;height:52px;font-size:16px;font-weight:600;color:#fff;cursor:pointer;list-style:none}
.f-mobile summary::-webkit-details-marker{display:none}
.f-mobile summary::after{content:"\f107";font-family:"Font Awesome 6 Free";font-weight:900;color:rgba(255,255,255,.6);transition:transform var(--ease)}
.f-mobile details[open] summary::after{transform:rotate(180deg)}
.f-mobile ul{padding-bottom:12px}
.f-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid rgba(255,255,255,.12);margin-top:8px;padding:24px 0 28px;font-size:13px;color:rgba(255,255,255,.55);flex-wrap:wrap}
.f-bottom p{margin:0}
.f-bottom-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.f-bottom-links a{color:rgba(255,255,255,.55)}
.f-bottom-links a:hover{color:#fff}

/* 移动端底部 Tab */
.mobile-tab{position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;background:rgba(255,255,255,.98);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom);transition:transform var(--ease)}
.mobile-tab.tab-hidden{transform:translateY(calc(100% - 8px))}
.tab-item{flex:1;min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;color:var(--ink-400);position:relative}
.tab-item i{font-size:18px}
.tab-item.active{color:var(--primary)}
.tab-item.active::before{content:"";position:absolute;top:0;width:20px;height:3px;border-radius:0 0 3px 3px;background:var(--primary)}

/* 移动端抽屉 */
.mobile-panel{position:fixed;left:0;right:0;top:56px;bottom:0;z-index:80;background:#fff;display:none;flex-direction:column;padding:8px 18px 28px;overflow-y:auto}
.mobile-panel.open{display:flex}
.mobile-panel a{display:flex;align-items:center;justify-content:space-between;height:52px;border-bottom:1px solid var(--line);font-size:17px;color:var(--ink-700)}
.mobile-panel a.active{color:var(--primary);font-weight:600}
.mobile-panel a i{color:var(--ink-400);font-size:14px}
.panel-cta{margin-top:auto;padding-top:20px}

/* 响应式 */
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  main h1{font-size:38px}
  main h2{font-size:28px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .split{grid-template-columns:1fr;gap:32px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .cta-soft{padding:36px}
  .f-top{grid-template-columns:repeat(2,1fr);gap:28px}
}
@media (max-width:767px){
  .nav-desktop{display:none}
  .header-cta{display:none}
  .menu-btn{display:inline-flex}
  .header-inner{height:56px;gap:16px}
  .site-header.scrolled .header-inner{height:56px}
  .mobile-tab{display:flex}
  html body{padding-bottom:72px}
  .site-footer{padding-top:0}
  .f-top{display:none}
  .f-mobile{display:block}
  .f-bottom{flex-direction:column;align-items:flex-start;padding-bottom:24px}
}
@media (max-width:639px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  main h1{font-size:30px}
  main h2{font-size:24px}
  main h3{font-size:19px}
  .page-hero{padding:32px 0 48px}
  .hero-media img{height:200px}
  .hero-lead{font-size:16.5px}
  .grid-4{grid-template-columns:1fr}
  .team-card{padding:20px}
  .form-card{padding:20px}
  .form-row{grid-template-columns:1fr}
  .cta-soft{flex-direction:column;align-items:flex-start;padding:28px}
  .cta-soft h2{font-size:22px}
  .tl-item{padding-left:52px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important}
  html{scroll-behavior:auto}
}