/* roulang page: index */
:root{
  --brand-900:#123A61;
  --brand-700:#1B4E7E;
  --brand-500:#2E6DA4;
  --brand-100:#E7EFF7;
  --brand-50:#F3F7FB;
  --accent-600:#D8551F;
  --accent-500:#E2662F;
  --accent-50:#FDF0E9;
  --jade-700:#125F4E;
  --jade-50:#E8F3F0;
  --ink-900:#131A22;
  --ink-700:#2C3745;
  --ink-500:#5C6B7C;
  --ink-300:#93A1B0;
  --line:#E2E8F0;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --surface-2:#FAFBFD;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --shadow-sm:0 1px 2px rgba(19,26,34,.06);
  --shadow-md:0 4px 12px rgba(19,26,34,.06);
  --shadow-lg:0 12px 32px rgba(19,26,34,.08);
  --shadow-brand:0 8px 20px rgba(27,78,126,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-900);}
img{max-width:100%;height:auto;display:block;background:var(--brand-50);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(46,109,164,.35);outline-offset:2px;border-radius:6px;}
.container{width:100%;padding-right:24px;padding-left:24px;margin-right:auto;margin-left:auto;}
@media (min-width:576px){.container{max-width:540px;}}
@media (min-width:768px){.container{max-width:720px;}}
@media (min-width:992px){.container{max-width:960px;}}
@media (min-width:1200px){.container{max-width:1200px;}}
.sec{padding:96px 0;}
.sec-sm{padding:72px 0;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-50);border:1px solid var(--brand-100);
  color:var(--brand-700);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.eyebrow i{font-size:12px;}
.sec-head{max-width:760px;margin-bottom:32px;}
.sec-head h2{font-size:clamp(22px,3vw,32px);margin-bottom:14px;}
.sec-head p{color:var(--ink-500);font-size:16px;margin:0;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--brand-900);}
.brand:hover{color:var(--brand-900);}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(150deg,var(--brand-700),var(--brand-900));
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-brand);flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.01em;color:var(--brand-900);}
.nav-list{display:flex;align-items:center;gap:28px;margin:0;}
.nav-list a{
  position:relative;display:block;padding:8px 2px;
  font-size:15px;font-weight:500;color:var(--ink-700);
}
.nav-list a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;border-radius:2px;
  background:var(--brand-700);transition:left .25s var(--ease),right .25s var(--ease);
}
.nav-list a:hover{color:var(--brand-700);}
.nav-list a:hover::after{left:0;right:0;}
.nav-list a.is-active{
  color:var(--brand-700);font-weight:600;
  background:var(--brand-50);border-radius:999px;padding:8px 16px;
}
.nav-list a.is-active::after{display:none;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.btn-primary-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border:1px solid var(--brand-700);
  border-radius:var(--r-md);background:var(--brand-700);color:#fff;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary-c:hover{background:var(--brand-900);border-color:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-brand);}
.btn-primary-c:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn-ghost-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border:1px solid var(--brand-100);
  border-radius:var(--r-md);background:#fff;color:var(--brand-700);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.btn-ghost-c:hover{background:var(--brand-50);color:var(--brand-900);border-color:var(--brand-500);transform:translateY(-1px);}
.btn-ghost-c:active{transform:translateY(0);}
.btn-sm-c{height:40px;padding:0 18px;font-size:14px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand-700);
}
.link-arrow i{transition:transform .22s var(--ease);font-size:13px;}
.link-arrow:hover i{transform:translateX(3px);}
.nav-toggle{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-900);transition:background .2s;}
.nav-toggle:hover{background:var(--brand-50);}
.nav-drawer{width:320px;max-width:86vw;}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 22px;}
.nav-drawer .offcanvas-body{padding:18px 22px 28px;display:flex;flex-direction:column;}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 12px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--ink-700);border-bottom:1px solid var(--line);
}
.drawer-link:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-link.is-active{background:var(--brand-50);color:var(--brand-700);font-weight:600;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(180deg,var(--bg) 0%,#fff 100%);
  padding:80px 0 88px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(27,78,126,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(27,78,126,.055) 1px,transparent 1px);
  background-size:12px 12px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.65),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.65),transparent 78%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:1;}
.hero h1{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.25;
  letter-spacing:-.01em;
  margin:20px 0 16px;
}
.hero-sub{font-size:17px;color:var(--ink-500);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.trust-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;border-top:1px dashed var(--line);padding-top:26px;}
.trust-item i{font-size:20px;color:var(--brand-500);margin-bottom:8px;display:block;}
.trust-item strong{display:block;font-size:15px;color:var(--ink-900);font-weight:600;margin-bottom:4px;}
.trust-item span{display:block;font-size:13px;line-height:1.7;color:var(--ink-300);}
.hero-visual{position:relative;}
.hero-visual .shot{
  border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--shadow-lg);
  border:1px solid var(--line);
}
.hero-visual .shot img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.float-card{
  position:absolute;left:-18px;bottom:-24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:18px 22px;box-shadow:var(--shadow-lg);min-width:196px;
}
.float-card .fc-num{font-size:30px;font-weight:700;color:var(--accent-500);line-height:1.1;}
.float-card .fc-txt{font-size:13px;color:var(--ink-500);margin-top:6px;}

/* ---------- 功能分组 ---------- */
.feature-main{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);padding:28px;height:100%;
  display:flex;flex-direction:column;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.feature-main:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand-100);}
.feature-main .fm-img{border-radius:var(--r-md);overflow:hidden;margin-bottom:22px;}
.feature-main .fm-img img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease);}
.feature-main:hover .fm-img img{transform:scale(1.04);}
.feature-main h3{font-size:20px;margin-bottom:12px;}
.feature-main .fm-desc{color:var(--ink-500);font-size:15px;margin-bottom:18px;}
.check-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-700);margin-bottom:10px;}
.check-list li:last-child{margin-bottom:0;}
.check-list i{color:var(--accent-500);font-size:14px;margin-top:5px;}
.feature-mini{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);padding:26px;height:100%;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.feature-mini:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand-100);}
.icon-box{
  width:46px;height:46px;border-radius:var(--r-md);
  background:var(--brand-50);border:1px solid var(--brand-100);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.icon-box i{font-size:20px;color:var(--brand-700);}
.feature-mini h3{font-size:18px;margin-bottom:10px;}
.feature-mini p{font-size:14.5px;color:var(--ink-500);margin:0;}
.feature-banner{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);overflow:hidden;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.feature-banner:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.feature-banner .fb-text{padding:34px 32px;}
.feature-banner .fb-text h3{font-size:20px;margin-bottom:12px;}
.feature-banner .fb-text p{font-size:15px;color:var(--ink-500);margin-bottom:18px;}
.feature-banner .fb-img{height:100%;min-height:240px;}
.feature-banner .fb-img img{width:100%;height:100%;object-fit:cover;}

/* ---------- 使用场景时间轴 ---------- */
.scene{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.timeline{position:relative;}
.tl-item{position:relative;display:flex;gap:20px;padding-bottom:32px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:15px;top:38px;bottom:2px;
  border-left:1px dashed var(--brand-100);
}
.tl-item:last-child::before{display:none;}
.tl-num{
  width:32px;height:32px;flex:0 0 32px;border-radius:var(--r-sm);
  background:var(--brand-700);color:#fff;font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;position:relative;z-index:1;
}
.tl-body h3{font-size:17px;margin-bottom:8px;}
.tl-body p{font-size:14.5px;color:var(--ink-500);margin:0;}
.scene-side h2{font-size:clamp(22px,3vw,30px);margin-bottom:14px;}
.scene-side p{color:var(--ink-500);font-size:15px;margin-bottom:20px;}

/* ---------- 案例 ---------- */
.case-block{
  background:var(--brand-900);color:#fff;border-radius:var(--r-xl);
  padding:56px;position:relative;overflow:hidden;
}
.case-block::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
  border-radius:50%;background:rgba(255,255,255,.04);
}
.case-block h2{color:#fff;font-size:clamp(22px,3vw,30px);margin-bottom:12px;}
.case-block .lead{color:rgba(255,255,255,.72);font-size:15px;margin-bottom:30px;}
.quote-card{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);padding:22px;margin-bottom:14px;
  transition:background .25s var(--ease),transform .25s var(--ease);
}
.quote-card:hover{background:rgba(255,255,255,.13);transform:translateY(-3px);}
.quote-card .q-mark{font-size:22px;color:var(--accent-500);line-height:1;margin-bottom:10px;display:block;}
.quote-card p{font-size:14.5px;color:rgba(255,255,255,.88);margin-bottom:14px;}
.quote-card .q-by{font-size:13px;color:rgba(255,255,255,.58);}
.metric-stack{display:flex;flex-direction:column;gap:22px;}
.metric-item{border-left:2px solid var(--accent-500);padding-left:18px;}
.metric-item .m-num{font-size:38px;font-weight:700;color:#fff;line-height:1.1;}
.metric-item .m-num small{font-size:15px;font-weight:600;margin-left:4px;color:rgba(255,255,255,.75);}
.metric-item .m-label{font-size:13px;color:rgba(255,255,255,.62);margin-top:6px;}
.jade-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:rgba(18,95,78,.55);border:1px solid rgba(255,255,255,.16);
  color:#D6EFE8;font-size:12px;font-weight:600;margin-bottom:16px;
}

/* ---------- 价格 ---------- */
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);padding:30px;height:100%;
  display:flex;flex-direction:column;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.price-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand-100);}
.price-card.featured{
  border:2px solid var(--brand-100);box-shadow:var(--shadow-lg);
  transform:translateY(-12px);position:relative;
}
.price-card.featured:hover{transform:translateY(-15px);}
.price-flag{
  position:absolute;top:-14px;left:30px;
  background:var(--accent-500);color:#fff;font-size:12px;font-weight:700;
  padding:5px 14px;border-radius:999px;letter-spacing:.02em;
}
.price-name{font-size:17px;font-weight:600;color:var(--ink-900);margin-bottom:6px;}
.price-desc{font-size:13.5px;color:var(--ink-300);margin-bottom:20px;}
.price-amount{display:flex;align-items:baseline;gap:4px;margin-bottom:20px;}
.price-amount .pa-num{font-size:36px;font-weight:700;color:var(--brand-900);line-height:1;}
.price-amount .pa-unit{font-size:14px;color:var(--ink-500);}
.price-list{margin-bottom:26px;flex:1 1 auto;}
.price-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-700);margin-bottom:12px;}
.price-list li:last-child{margin-bottom:0;}
.price-list i{font-size:14px;color:var(--brand-500);margin-top:5px;}

/* ---------- 资讯列表 ---------- */
.news{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.news-head h2{font-size:clamp(22px,3vw,32px);margin-bottom:10px;}
.news-head p{color:var(--ink-500);font-size:15px;margin:0;}
.card-post{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);overflow:hidden;height:100%;
  display:flex;flex-direction:column;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.card-post:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand-100);}
.card-post .cp-media{overflow:hidden;}
.card-post .cp-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease);}
.card-post:hover .cp-media img{transform:scale(1.04);}
.card-post .cp-body{padding:24px;display:flex;flex-direction:column;flex:1 1 auto;}
.badge-c{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
  background:var(--brand-50);color:var(--brand-700);border:1px solid var(--brand-100);
}
.badge-c.orange{background:var(--accent-50);color:var(--accent-600);border-color:#F7DCCD;}
.badge-c.jade{background:var(--jade-50);color:var(--jade-700);border-color:#CFE7E0;}
.card-post h3{font-size:17.5px;margin:14px 0 10px;line-height:1.5;}
.card-post h3 a{color:var(--ink-900);}
.card-post h3 a:hover{color:var(--brand-700);}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-post .cp-excerpt{font-size:14.5px;color:var(--ink-500);margin-bottom:16px;}
.card-post .cp-meta{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-300);margin-top:auto;
}
.card-post .cp-meta i{margin-right:5px;}
.card-post .cp-link{margin-top:14px;}
.card-side{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);overflow:hidden;display:flex;height:100%;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.card-side:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand-100);}
.card-side .cs-media{flex:0 0 116px;overflow:hidden;}
.card-side .cs-media img{width:100%;height:100%;object-fit:cover;}
.card-side .cs-body{padding:18px 20px;display:flex;flex-direction:column;gap:8px;}
.card-side h3{font-size:15.5px;line-height:1.5;margin:0;}
.card-side h3 a{color:var(--ink-900);}
.card-side h3 a:hover{color:var(--brand-700);}
.card-side .cs-excerpt{font-size:13.5px;color:var(--ink-500);margin:0;}
.card-side .cs-meta{font-size:12.5px;color:var(--ink-300);display:flex;gap:12px;flex-wrap:wrap;margin-top:auto;}
.card-tight{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);padding:20px;height:100%;
  display:flex;flex-direction:column;gap:10px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.card-tight:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--brand-100);}
.card-tight h3{font-size:15px;line-height:1.55;margin:0;}
.card-tight h3 a{color:var(--ink-900);}
.card-tight h3 a:hover{color:var(--brand-700);}
.card-tight .ct-meta{font-size:12.5px;color:var(--ink-300);margin-top:auto;display:flex;gap:12px;flex-wrap:wrap;}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-lg);
  padding:48px 24px;text-align:center;background:#fff;
}
.empty-state i{font-size:28px;color:var(--ink-300);display:block;margin-bottom:14px;}
.empty-state p{font-size:15px;color:var(--ink-500);margin-bottom:18px;}

/* ---------- FAQ ---------- */
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);margin-bottom:12px;overflow:hidden;
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.faq-item:last-child{margin-bottom:0;}
.faq-item.is-open{border-color:var(--brand-100);box-shadow:var(--shadow-md);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink-900);cursor:pointer;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-700);}
.faq-item.is-open .faq-q{color:var(--brand-900);}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;
  background:var(--brand-50);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;line-height:1;transition:transform .3s var(--ease),background .3s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand-700);color:#fff;}
.faq-a{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--ink-500);}
.faq-item.is-open{border-left:3px solid var(--brand-700);}
.faq-a[hidden]{display:none;}

/* ---------- CTA ---------- */
.cta-strip{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--brand-700);
}
.cta-strip::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.32;
}
.cta-strip::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(18,58,97,.88),rgba(27,78,126,.62));
}
.cta-inner{position:relative;z-index:1;padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:clamp(20px,2.6vw,26px);margin-bottom:8px;}
.cta-inner p{color:rgba(255,255,255,.78);font-size:15px;margin:0;}
.btn-light-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-md);
  background:#fff;color:var(--brand-900);border:1px solid #fff;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.btn-light-c:hover{background:#fff;color:var(--brand-900);transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.18);}
.btn-light-c:active{transform:translateY(0);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#fff;padding:72px 0 0;margin-top:96px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-mark{box-shadow:none;background:rgba(255,255,255,.12);}
.footer-brand .footer-brand-text{font-size:19px;font-weight:700;color:#fff;}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);max-width:340px;}
.footer-links li{margin-bottom:12px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.78);}
.footer-links a:hover{color:#fff;}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.78);margin-bottom:12px;display:flex;gap:10px;align-items:flex-start;}
.footer-contact i{color:rgba(255,255,255,.5);margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,.56);}
.footer-tag{font-size:13px;color:rgba(255,255,255,.5);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .container{padding-right:20px;padding-left:20px;}
  .case-block{padding:44px;}
}
@media (max-width:991.98px){
  .sec{padding:72px 0;}
  .sec-sm{padding:56px 0;}
  .hero{padding:56px 0 64px;}
  .hero-visual{margin-top:44px;}
  .float-card{left:0;bottom:-18px;}
  .trust-row{grid-template-columns:1fr;gap:16px;}
  .scene-side{margin-bottom:32px;}
  .cta-inner{padding:34px 28px;}
  .site-footer{padding-top:56px;margin-top:72px;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .sec{padding:56px 0;}
  .sec-sm{padding:44px 0;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-primary-c,
  .hero-actions .btn-ghost-c{width:100%;}
  .case-block{padding:32px 22px;border-radius:var(--r-lg);}
  .price-card.featured{transform:none;}
  .price-card.featured:hover{transform:translateY(-3px);}
  .card-side{flex-direction:column;}
  .card-side .cs-media{flex:0 0 auto;}
  .card-side .cs-media img{aspect-ratio:16/9;height:auto;}
  .feature-banner .fb-img{min-height:200px;}
  .faq-q{padding:18px;font-size:15.5px;}
  .faq-a{padding:0 18px 18px;}
  .cta-inner{padding:28px 22px;flex-direction:column;align-items:flex-start;}
  .btn-light-c{width:100%;}
}
@media (max-width:575.98px){
  .container{padding-right:16px;padding-left:16px;}
  .hero h1{font-size:26px;}
  .hero-sub{font-size:15.5px;}
  .float-card{position:static;margin-top:16px;min-width:0;}
  .feature-main{padding:22px;}
  .feature-mini{padding:22px;}
  .price-card{padding:24px;}
  .cta-inner h2{font-size:19px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --brand-900:#123A61;
  --brand-700:#1B4E7E;
  --brand-500:#2E6DA4;
  --brand-100:#E7EFF7;
  --brand-50:#F3F7FB;
  --accent-600:#D8551F;
  --accent-500:#E2662F;
  --accent-50:#FDF0E9;
  --jade-700:#125F4E;
  --ink-900:#131A22;
  --ink-700:#2C3745;
  --ink-500:#5C6B7C;
  --ink-300:#93A1B0;
  --line:#E2E8F0;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --surface-2:#FAFBFD;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --r-full:999px;
  --shadow-sm:0 1px 2px rgba(19,26,34,.06);
  --shadow-md:0 4px 12px rgba(19,26,34,.06);
  --shadow-lg:0 12px 32px rgba(19,26,34,.08);
  --shadow-brand:0 8px 20px rgba(27,78,126,.18);
  --ease:.25s cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
a{color:var(--brand-700);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-900)}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-md)}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(46,109,164,.35);outline-offset:2px;border-radius:var(--r-sm)}
.container{width:100%;max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
.num{font-family:Inter,"PingFang SC",system-ui,sans-serif;font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--brand-900);font-size:18px;font-weight:700;letter-spacing:.2px}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  display:grid;place-items:center;box-shadow:var(--shadow-sm);
}
.brand-mark svg{width:22px;height:22px;display:block}
.brand-text{white-space:nowrap}
.nav-list{list-style:none;display:flex;align-items:center;gap:8px;margin:0;padding:0}
.nav-list a{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:var(--r-full);font-size:15px;font-weight:500;color:var(--ink-700);
  transition:color var(--ease),background var(--ease);
}
.nav-list a::after{
  content:"";position:absolute;left:50%;bottom:2px;width:16px;height:2px;border-radius:2px;
  background:var(--brand-700);transform:translateX(-50%) scaleX(0);transition:transform var(--ease);
}
.nav-list a:hover{color:var(--brand-700)}
.nav-list a:hover::after{transform:translateX(-50%) scaleX(1)}
.nav-list a.is-active{background:var(--brand-50);color:var(--brand-700);font-weight:600}
.nav-list a.is-active::after{display:none}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  width:44px;height:44px;border:1px solid var(--line);background:var(--surface);
  border-radius:var(--r-md);display:inline-flex;flex-direction:column;justify-content:center;
  align-items:center;gap:4px;cursor:pointer;transition:var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-900)}
.nav-toggle:hover{border-color:var(--brand-100);background:var(--brand-50)}

/* ---------- buttons ---------- */
.btn-primary-c,.btn-ghost-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:var(--ease);
}
.btn-primary-c{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary-c:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-brand)}
.btn-primary-c:active{transform:translateY(0)}
.btn-ghost-c{background:var(--surface);color:var(--brand-700);border-color:var(--brand-100)}
.btn-ghost-c:hover{background:var(--brand-50);color:var(--brand-900);border-color:var(--brand-500)}
.btn-accent-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;
  border-radius:var(--r-md);background:var(--accent-500);color:#fff;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:var(--ease);
}
.btn-accent-c:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px)}
.btn-sm-c{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-md)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-700)}
.link-more i{font-size:12px;transition:transform var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* ---------- breadcrumb / article head ---------- */
.page-head{
  background:var(--brand-50);
  border-bottom:1px solid var(--line);
  padding:22px 0 40px;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-500);margin-bottom:22px}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--brand-700)}
.crumb .sep{color:var(--ink-300)}
.crumb .current{color:var(--ink-900);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:700;margin-bottom:18px;max-width:900px}
.article-lead{max-width:820px;font-size:16px;color:var(--ink-500);margin-bottom:20px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:14px;color:var(--ink-500)}
.article-meta i{color:var(--brand-500);margin-right:6px}
.badge-cat{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--r-full);
  background:var(--brand-100);color:var(--brand-900);font-size:12px;font-weight:600;
}
.badge-accent{background:var(--accent-50);color:var(--accent-600)}
.badge-jade{background:#E6F2EF;color:var(--jade-700)}

/* ---------- article body ---------- */
.section{padding:64px 0}
.article-layout{padding:56px 0 72px}
.article-shell{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);padding:36px 40px;
}
.article-body{font-size:16px;line-height:1.8;color:var(--ink-700);word-break:break-word}
.article-body>*:first-child{margin-top:0}
.article-body h2{
  font-size:20px;font-weight:600;color:var(--ink-900);
  margin:36px 0 12px;padding-left:14px;position:relative;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand-700);
}
.article-body h3{font-size:17px;font-weight:600;color:var(--ink-900);margin:28px 0 10px;scroll-margin-top:96px}
.article-body p{margin:0 0 18px}
.article-body a{font-weight:600;border-bottom:1px solid var(--brand-100)}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:6px;list-style:none}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:10px;line-height:1.9}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--brand-500);
}
.article-body ol{counter-reset:artnum}
.article-body ol li{counter-increment:artnum;padding-left:30px}
.article-body ol li::before{
  content:counter(artnum);position:absolute;left:0;top:.35em;width:20px;height:20px;border-radius:var(--r-sm);
  background:var(--brand-50);color:var(--brand-700);font-size:12px;font-weight:700;
  display:grid;place-items:center;line-height:1;
}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;background:var(--brand-50);
  border-left:4px solid var(--brand-500);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{margin:22px auto;border-radius:var(--r-md);box-shadow:var(--shadow-sm)}
.article-body figure{margin:22px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-500);margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden}
.article-body th{background:var(--brand-50);color:var(--brand-900);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line)}
.article-body tbody tr:nth-child(even){background:var(--surface-2)}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body code{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-sm);padding:2px 6px;font-size:14px}
.article-body hr{border:0;border-top:1px dashed var(--line);margin:32px 0}

/* ---------- sidebar ---------- */
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);padding:24px;margin-bottom:20px;
}
.side-card h3{font-size:16px;font-weight:700;color:var(--ink-900);display:flex;align-items:center;gap:8px;margin-bottom:16px}
.side-card h3 i{color:var(--brand-500);font-size:15px}
.toc-list{list-style:none;border-left:1px solid var(--line);padding-left:0}
.toc-list li{margin:0}
.toc-list a{
  display:block;padding:7px 12px;font-size:14px;color:var(--ink-500);
  border-left:2px solid transparent;margin-left:-1px;line-height:1.6;transition:var(--ease);
}
.toc-list a:hover{color:var(--brand-700);background:var(--brand-50)}
.toc-list a.is-current{color:var(--brand-700);font-weight:600;border-left-color:var(--brand-700);background:var(--brand-50)}
.side-sticky{position:sticky;top:96px}
.hot-list{list-style:none}
.hot-list li{padding:12px 0;border-bottom:1px dashed var(--line)}
.hot-list li:last-child{border-bottom:0;padding-bottom:0}
.hot-list a{display:block;font-size:14.5px;font-weight:600;color:var(--ink-700);line-height:1.6}
.hot-list a:hover{color:var(--brand-700)}
.hot-list span{display:block;font-size:13px;color:var(--ink-300);margin-top:4px}

/* ---------- tags / post nav ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:36px;padding-top:24px;border-top:1px dashed var(--line)}
.tag-row .label{font-size:14px;color:var(--ink-500);margin-right:2px}
.tag-badge{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-full);
  background:var(--surface-2);border:1px solid var(--line);color:var(--ink-700);
  font-size:13px;font-weight:600;transition:var(--ease);
}
.tag-badge:hover{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700)}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.post-nav-card{
  display:flex;flex-direction:column;gap:6px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:18px 20px;transition:var(--ease);
}
.post-nav-card:hover{border-color:var(--brand-100);box-shadow:var(--shadow-md);transform:translateY(-3px)}
.post-nav-card span{font-size:13px;color:var(--ink-300)}
.post-nav-card strong{font-size:15px;font-weight:600;color:var(--ink-900);line-height:1.6}
.post-nav-card.next{text-align:right;align-items:flex-end}

/* ---------- related ---------- */
.block-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.block-head h2{font-size:clamp(22px,3vw,32px);font-weight:700}
.block-head p{font-size:15px;color:var(--ink-500);margin:8px 0 0;max-width:640px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-md);overflow:hidden;transition:var(--ease);
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand-100)}
.rel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--brand-50);border-radius:0}
.rel-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.rel-body h3{font-size:18px;font-weight:600;line-height:1.5}
.rel-body p{font-size:14.5px;color:var(--ink-500);margin:0;line-height:1.7}
.rel-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--ink-300);margin-top:auto}

/* ---------- empty state ---------- */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-lg);background:var(--surface-2);
  padding:48px 24px;text-align:center;
}
.empty-state i{font-size:30px;color:var(--ink-300)}
.empty-state p{font-size:15px;color:var(--ink-500);margin:14px 0 20px}

/* ---------- cta ---------- */
.cta-band{padding:0 0 80px}
.cta-inner{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--brand-700) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  box-shadow:var(--shadow-lg);
}
.cta-inner::before{content:"";position:absolute;inset:0;background:rgba(27,78,126,.82)}
.cta-content{
  position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:24px;padding:44px 48px;
}
.cta-content h2{color:#fff;font-size:clamp(20px,2.4vw,28px);margin-bottom:10px}
.cta-content p{color:rgba(255,255,255,.82);font-size:15px;margin:0}
.cta-content .btn-accent-c{flex:0 0 auto}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:#fff;padding:64px 0 0;margin-top:24px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand-text{font-size:18px;font-weight:700;color:#fff}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:340px;margin:0}
.footer-links,.footer-contact{list-style:none}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.78)}
.footer-links a:hover{color:#fff}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.78);margin-bottom:12px;line-height:1.7}
.footer-contact i{margin-top:5px;color:rgba(255,255,255,.6)}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
}
.footer-bottom p{margin:0;font-size:13.5px;color:rgba(255,255,255,.68)}
.footer-tag{font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.4px}

/* ---------- offcanvas ---------- */
.mobile-nav{width:320px;border-left:1px solid var(--line)}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.mobile-nav .offcanvas-body{padding:12px 20px 28px;display:flex;flex-direction:column}
.mobile-nav-list{list-style:none;margin-bottom:20px}
.mobile-nav-list a{
  display:flex;align-items:center;height:48px;padding:0 12px;border-bottom:1px solid var(--line);
  font-size:15px;font-weight:500;color:var(--ink-700);border-radius:0;
}
.mobile-nav-list a:hover{color:var(--brand-700);background:var(--brand-50)}
.mobile-nav-list a.is-active{color:var(--brand-700);font-weight:600;background:var(--brand-50);border-radius:var(--r-sm)}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .container{max-width:960px;padding-left:20px;padding-right:20px}
  .card-grid{gap:20px}
}
@media (max-width:991.98px){
  .container{max-width:720px}
  .nav-inner{height:64px}
  .article-shell{padding:26px 22px}
  .side-sticky{position:static}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .cta-content{padding:32px 28px}
  .section{padding:56px 0}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  .article-title{font-size:26px}
  .page-head{padding:16px 0 28px}
  .crumb .current{max-width:240px}
  .card-grid{grid-template-columns:1fr}
  .post-nav{grid-template-columns:1fr}
  .post-nav-card.next{text-align:left;align-items:flex-start}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .article-body img{width:100%}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .section{padding:44px 0}
  .article-shell{padding:22px 18px}
  .article-title{font-size:23px}
  .side-card{padding:20px}
  .cta-content{flex-direction:column;align-items:flex-start}
  .cta-content .btn-accent-c{width:100%}
  .btn-primary-c,.btn-ghost-c{width:100%}
  .btn-sm-c{width:auto}
}

/* roulang page: category1 */
/* ============ 1. 设计变量 ============ */
:root{
  --brand-900:#123A61;
  --brand-700:#1B4E7E;
  --brand-500:#2E6DA4;
  --brand-100:#E7EFF7;
  --brand-50:#F3F7FB;
  --accent-600:#D8551F;
  --accent-500:#E2662F;
  --accent-50:#FDF0E9;
  --jade-700:#125F4E;
  --jade-50:#E8F3F0;
  --ink-900:#131A22;
  --ink-700:#2C3745;
  --ink-500:#5C6B7C;
  --ink-300:#93A1B0;
  --line:#E2E8F0;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --surface-2:#FAFBFD;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --r-full:999px;
  --shadow-sm:0 1px 2px rgba(19,26,34,.06);
  --shadow-md:0 4px 12px rgba(19,26,34,.06);
  --shadow-lg:0 12px 32px rgba(19,26,34,.08);
  --shadow-brand:0 8px 20px rgba(27,78,126,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ============ 2. 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink-700);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25}
h2{font-size:clamp(22px,3vw,32px);line-height:1.35}
h3{font-size:19px;font-weight:600;line-height:1.5}
h4{font-size:16px;font-weight:600;line-height:1.5}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease)}
a:hover{color:var(--brand-900)}
img{max-width:100%;display:block;height:auto;background:var(--brand-50)}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;border:0;background:none;cursor:pointer}
:focus-visible{outline:3px solid rgba(46,109,164,.35);outline-offset:2px;border-radius:8px}
::selection{background:var(--brand-100);color:var(--brand-900)}
.num{font-variant-numeric:tabular-nums}

/* ============ 3. 布局容器 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:88px 0}
.section-tight{padding:64px 0 88px}
.section-head{max-width:760px;margin-bottom:36px}
.section-head p{font-size:16px;color:var(--ink-500);margin-top:14px}
@media (max-width:1199px){
  .container{max-width:960px;padding-left:20px;padding-right:20px}
}

/* ============ 4. 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-brand);
}
.brand-mark svg{width:22px;height:22px;display:block}
.brand-text{font-size:19px;font-weight:700;color:var(--brand-900);letter-spacing:.2px}
.nav-list{display:flex;align-items:center;gap:28px;margin:0;padding:0}
.nav-list li{list-style:none}
.nav-list a{
  position:relative;display:inline-block;padding:8px 2px;
  font-size:15px;font-weight:500;color:var(--ink-700);
}
.nav-list a::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;
  background:var(--brand-700);border-radius:2px;transform:translateX(-50%);
  transition:width .25s var(--ease);
}
.nav-list a:hover{color:var(--brand-700)}
.nav-list a:hover::after{width:100%}
.nav-list a.is-active{
  background:var(--brand-50);color:var(--brand-700);font-weight:600;
  border-radius:var(--r-full);padding:8px 16px;
}
.nav-list a.is-active::after{display:none}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  width:42px;height:42px;border-radius:var(--r-sm);
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--line);background:var(--surface);transition:.2s var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-900);border-radius:2px;transition:.2s var(--ease)}
.nav-toggle:hover{border-color:var(--brand-100);background:var(--brand-50)}
.nav-toggle:active{transform:scale(.96)}

/* 抽屉导航 */
.nav-drawer{width:min(330px,88vw);background:var(--surface);border-left:1px solid var(--line)}
.nav-drawer .offcanvas-header{
  padding:18px 22px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-title{font-size:16px;font-weight:700;color:var(--brand-900)}
.drawer-close{
  width:36px;height:36px;border-radius:var(--r-sm);border:1px solid var(--line);
  color:var(--ink-700);display:inline-flex;align-items:center;justify-content:center;transition:.2s var(--ease);
}
.drawer-close:hover{background:var(--brand-50);color:var(--brand-900)}
.nav-drawer .offcanvas-body{padding:8px 22px 26px}
.drawer-list li{border-bottom:1px solid var(--line)}
.drawer-list a{
  display:flex;align-items:center;height:48px;font-size:16px;font-weight:500;color:var(--ink-700);
}
.drawer-list a.is-active{color:var(--brand-700);font-weight:600}
.drawer-list a:hover{color:var(--brand-700)}

/* ============ 5. 按钮 ============ */
.btn-primary-c,.btn-ghost-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary-c{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary-c:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-brand)}
.btn-primary-c:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-ghost-c{background:var(--surface);color:var(--brand-700);border:1px solid var(--brand-100)}
.btn-ghost-c:hover{background:var(--brand-50);color:var(--brand-900);border-color:var(--brand-500);transform:translateY(-1px)}
.btn-ghost-c:active{transform:translateY(0)}
.btn-sm-c{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-sm)}
.btn-on-dark{background:#fff;color:var(--brand-900)}
.btn-on-dark:hover{background:var(--brand-50);color:var(--brand-900)}
.btn-primary-c[disabled],.btn-ghost-c[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand-700)}
.link-arrow i{font-size:13px;transition:transform .2s var(--ease)}
.link-arrow:hover i{transform:translateX(3px)}

/* ============ 6. 徽章与标签 ============ */
.badge-c{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-full);
  font-size:12px;font-weight:600;line-height:1.6;letter-spacing:.2px;
}
.badge-blue{background:var(--brand-100);color:var(--brand-700)}
.badge-orange{background:var(--accent-50);color:var(--accent-600)}
.badge-jade{background:var(--jade-50);color:var(--jade-700)}
.badge-on-dark{background:rgba(255,255,255,.14);color:#fff}

/* ============ 7. 页头区 ============ */
.page-hero{
  background:var(--brand-50);
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
  position:relative;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(27,78,126,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(27,78,126,.05) 1px,transparent 1px);
  background-size:12px 12px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-500);margin-bottom:18px;flex-wrap:wrap}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--brand-700)}
.crumb span{color:var(--ink-300)}
.crumb em{font-style:normal;color:var(--ink-900);font-weight:600}
.page-hero h1{margin:14px 0 18px}
.hero-lead{font-size:16px;color:var(--ink-500);max-width:600px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-visual{
  border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--shadow-lg);
  border:1px solid var(--line);background:var(--surface);
}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover}

/* ============ 8. 步骤图文卡 ============ */
.flow-card{
  display:flex;overflow:hidden;margin-bottom:24px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-md);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.flow-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand-100)}
.flow-media{flex:0 0 42%;overflow:hidden;background:var(--brand-50);position:relative}
.flow-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.flow-card:hover .flow-media img{transform:scale(1.04)}
.flow-body{flex:1;padding:28px 28px 26px}
.flow-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.step-index{
  width:32px;height:32px;border-radius:var(--r-sm);flex-shrink:0;
  background:var(--brand-700);color:#fff;font-size:14px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.flow-body h3{font-size:20px}
.flow-body ul{margin-top:6px}
.flow-body li{
  position:relative;padding-left:18px;margin-bottom:10px;
  font-size:15px;line-height:1.8;color:var(--ink-500);
}
.flow-body li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;
  border-radius:2px;background:var(--brand-500);
}

/* ============ 9. 侧栏卡片 ============ */
.tips-card{
  background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--accent-500);
  border-radius:var(--r-lg);box-shadow:var(--shadow-md);
  padding:24px;margin-bottom:24px;
}
.tips-card h3{font-size:17px;margin-bottom:14px}
.tips-card li{
  position:relative;padding-left:22px;margin-bottom:12px;
  font-size:14.5px;line-height:1.75;color:var(--ink-500);
}
.tips-card li:last-child{margin-bottom:0}
.tips-card li i{position:absolute;left:0;top:5px;font-size:13px;color:var(--accent-500)}
.checklist-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-md);padding:24px;
}
.checklist-card h3{font-size:17px;margin-bottom:16px}
.checklist-card li{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px}
.checklist-card li:last-child{margin-bottom:0}
.sq-num{
  width:24px;height:24px;border-radius:6px;flex-shrink:0;margin-top:3px;
  background:var(--brand-50);border:1px solid var(--brand-100);color:var(--brand-700);
  font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.checklist-card li span.txt{font-size:14.5px;line-height:1.7;color:var(--ink-500)}
.hint-strip{
  margin-top:8px;padding:20px 24px;border-radius:var(--r-lg);
  background:var(--brand-50);border:1px solid var(--brand-100);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.hint-strip p{margin:0;font-size:15px;color:var(--ink-700)}
.hint-strip p i{color:var(--brand-500);margin-right:8px}

/* ============ 10. 深色数据区 ============ */
.dark-band{
  background:var(--brand-900);color:#fff;border-radius:var(--r-xl);
  padding:48px;position:relative;overflow:hidden;
}
.dark-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(46,109,164,.45),rgba(18,58,97,0) 70%);
  pointer-events:none;
}
.dark-band .row{position:relative;z-index:1}
.dark-band h2{color:#fff}
.dark-band p{color:rgba(255,255,255,.78)}
.data-card{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);padding:22px;height:100%;
  transition:background-color .25s var(--ease),transform .25s var(--ease);
}
.data-card:hover{background:rgba(255,255,255,.13);transform:translateY(-3px)}
.data-num{
  font-size:34px;font-weight:700;line-height:1.2;color:var(--accent-500);
  font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:4px;
}
.data-num small{font-size:14px;font-weight:600;color:rgba(255,255,255,.8)}
.data-label{margin-top:8px;font-size:13px;line-height:1.7;color:rgba(255,255,255,.72)}

/* ============ 11. 场景列表 ============ */
.scene-list li{
  display:flex;gap:20px;padding:22px 0;border-bottom:1px dashed var(--line);
}
.scene-list li:first-child{padding-top:0}
.scene-list li:last-child{border-bottom:0;padding-bottom:0}
.scene-num{
  width:36px;height:36px;border-radius:var(--r-sm);flex-shrink:0;
  background:var(--brand-50);border:1px solid var(--brand-100);color:var(--brand-700);
  font-size:15px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.scene-list h3{font-size:17px;margin-bottom:6px}
.scene-list p{font-size:15px;color:var(--ink-500);margin:0}
.scene-side{position:sticky;top:96px}

/* ============ 12. FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);margin-bottom:12px;overflow:hidden;
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.faq-item:hover{border-color:var(--brand-100)}
.faq-item.is-open{box-shadow:inset 3px 0 0 var(--brand-700),var(--shadow-md);border-color:var(--brand-100)}
.faq-question{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-question:hover{color:var(--brand-700)}
.faq-item.is-open .faq-question{color:var(--brand-900)}
.faq-icon{
  flex-shrink:0;width:24px;height:24px;margin-top:4px;color:var(--brand-500);
  font-size:18px;line-height:1;display:inline-flex;align-items:center;justify-content:center;
  transition:transform .25s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--brand-700)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-answer-inner{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--ink-500)}

/* ============ 13. CTA 条 ============ */
.cta-band{
  border-radius:var(--r-xl);overflow:hidden;padding:48px;
  background-image:linear-gradient(rgba(18,58,97,.88),rgba(18,58,97,.88)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-lg);
}
.cta-band h2{color:#fff;font-size:clamp(20px,2.4vw,26px);margin-bottom:8px}
.cta-band p{color:rgba(255,255,255,.8);margin:0;font-size:15px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 14. 页脚 ============ */
.site-footer{background:var(--brand-900);color:#fff;padding:64px 0 0;margin-top:88px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.3px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand-text{font-size:19px;font-weight:700;color:#fff}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:340px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.78)}
.footer-links a:hover{color:#fff}
.footer-contact li{
  display:flex;align-items:flex-start;gap:10px;margin-bottom:12px;
  font-size:14px;color:rgba(255,255,255,.78);line-height:1.7;
}
.footer-contact i{margin-top:5px;color:var(--accent-500);font-size:13px}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,.7)}
.footer-tag{font-size:13px;color:rgba(255,255,255,.6)}

/* ============ 15. 响应式 ============ */
@media (max-width:991px){
  .section{padding:64px 0}
  .page-hero{padding:40px 0 48px}
  .hero-lead{max-width:100%}
  .dark-band{padding:32px}
  .cta-band{padding:32px}
  .flow-card{flex-direction:column}
  .flow-media{flex:none;width:100%}
  .flow-media img{aspect-ratio:16/9;height:auto}
  .scene-side{position:static}
  .site-footer{padding-top:48px;margin-top:64px}
  .footer-about{max-width:100%}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .section{padding:56px 0}
  .section-head{margin-bottom:26px}
  .flow-body{padding:22px 20px}
  .flow-body h3{font-size:18px}
  .tips-card,.checklist-card{padding:20px}
  .dark-band{padding:26px 20px}
  .data-num{font-size:28px}
  .cta-band{padding:26px 20px}
  .hint-strip{padding:18px 20px}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn-primary-c,.hero-actions .btn-ghost-c{width:100%}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn-primary-c,.cta-actions .btn-ghost-c{width:100%}
  .faq-question{padding:18px 18px;font-size:15.5px}
  .faq-answer-inner{padding:0 18px 20px}
  .scene-list li{gap:14px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --brand-900:#123A61;
  --brand-700:#1B4E7E;
  --brand-500:#2E6DA4;
  --brand-100:#E7EFF7;
  --brand-50:#F3F7FB;
  --accent-600:#D8551F;
  --accent-500:#E2662F;
  --accent-50:#FDF0E9;
  --jade-700:#125F4E;
  --ink-900:#131A22;
  --ink-700:#2C3745;
  --ink-500:#5C6B7C;
  --ink-300:#93A1B0;
  --line:#E2E8F0;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --surface-2:#FAFBFD;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --r-full:999px;
  --shadow-sm:0 1px 2px rgba(19,26,34,.06);
  --shadow-md:0 4px 12px rgba(19,26,34,.06);
  --shadow-lg:0 12px 32px rgba(19,26,34,.08);
  --shadow-brand:0 8px 20px rgba(27,78,126,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font: "PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

h1,h2,h3,h4,h5{
  margin:0;
  color:var(--ink-900);
  font-weight:700;
  letter-spacing:.2px;
}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;}
h2{font-size:clamp(22px,3vw,32px);line-height:1.35;}
h3{font-size:19px;line-height:1.5;font-weight:600;}
h4{font-size:16px;line-height:1.6;font-weight:600;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}

a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--brand-900);}

img{max-width:100%;display:block;height:auto;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}

::selection{background:var(--brand-100);color:var(--brand-900);}

:focus-visible{outline:3px solid rgba(46,109,164,.35);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm);}

.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:36px;
  height:36px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  display:grid;
  place-items:center;
  flex-shrink:0;
}
.brand-mark svg{width:22px;height:22px;display:block;}
.brand-text{
  font-size:19px;
  font-weight:700;
  color:var(--brand-900);
  letter-spacing:.3px;
}

.nav-list{
  display:flex;
  align-items:center;
  gap:28px;
  margin:0;
  padding:0;
}
.nav-list a{
  position:relative;
  display:inline-block;
  font-size:15px;
  font-weight:500;
  color:var(--ink-700);
  padding:8px 2px;
  white-space:nowrap;
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--brand-700);
  transition:left .25s var(--ease),right .25s var(--ease);
}
.nav-list a:hover{color:var(--brand-700);}
.nav-list a:hover::after{left:0;right:0;}
.nav-list a.is-active{
  color:var(--brand-700);
  font-weight:600;
  background:var(--brand-50);
  border-radius:var(--r-full);
  padding:8px 16px;
}
.nav-list a.is-active::after{display:none;}

.nav-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}

.nav-toggle{
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:#fff;
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  cursor:pointer;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--brand-900);
  transition:transform .25s var(--ease);
}
.nav-toggle:hover{border-color:var(--brand-100);background:var(--brand-50);}
.nav-toggle:active{transform:scale(.97);}

/* 移动抽屉 */
.mobile-nav{width:320px !important;max-width:86vw;}
.mobile-nav .offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:18px 20px;
}
.mobile-nav .offcanvas-title{
  font-size:16px;
  font-weight:700;
  color:var(--brand-900);
}
.mobile-nav .offcanvas-body{padding:8px 0 24px;display:flex;flex-direction:column;}
.mobile-nav .mnav-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:48px;
  padding:0 20px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-700);
  border-bottom:1px solid var(--line);
}
.mobile-nav .mnav-link:hover{background:var(--brand-50);color:var(--brand-700);}
.mobile-nav .mnav-link.is-active{
  color:var(--brand-700);
  font-weight:600;
  background:var(--brand-50);
  box-shadow:inset 3px 0 0 var(--brand-700);
}
.mobile-nav .mnav-foot{margin-top:auto;padding:20px;}

/* ============ 按钮 ============ */
.btn-primary-c,
.btn-ghost-c,
.btn-accent-c{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-md);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background-color .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.btn-primary-c{
  background:var(--brand-700);
  border-color:var(--brand-700);
  color:#fff;
}
.btn-primary-c:hover{
  background:var(--brand-900);
  border-color:var(--brand-900);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--shadow-brand);
}
.btn-primary-c:active{transform:translateY(0);box-shadow:none;}

.btn-ghost-c{
  background:#fff;
  border-color:var(--brand-100);
  color:var(--brand-700);
}
.btn-ghost-c:hover{
  background:var(--brand-50);
  border-color:var(--brand-500);
  color:var(--brand-900);
  transform:translateY(-1px);
}
.btn-ghost-c:active{transform:translateY(0);}

.btn-accent-c{
  background:var(--accent-500);
  border-color:var(--accent-500);
  color:#fff;
}
.btn-accent-c:hover{
  background:var(--accent-600);
  border-color:var(--accent-600);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 8px 20px rgba(216,85,31,.24);
}
.btn-accent-c:active{transform:translateY(0);}

.btn-sm-c{height:40px;padding:0 18px;font-size:14px;}
.btn-block-mobile{width:100%;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--brand-700);
}
.link-arrow i{font-size:13px;transition:transform .25s var(--ease);}
.link-arrow:hover i{transform:translateX(3px);}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section-tight{padding:72px 0;}
.section-alt{background:var(--surface);}
.section-surface{background:var(--surface-2);}

.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--brand-700);
  background:var(--brand-50);
  border:1px solid var(--brand-100);
  border-radius:var(--r-full);
  padding:5px 14px;
  margin-bottom:16px;
}
.sec-head h2{margin-bottom:14px;}
.sec-lead{font-size:16px;color:var(--ink-500);line-height:1.8;margin:0;}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--brand-50);
  border-bottom:1px solid var(--line);
  padding:52px 0 64px;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(27,78,126,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(27,78,126,.045) 1px,transparent 1px);
  background-size:12px 12px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}

.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--ink-500);
  margin-bottom:22px;
}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--ink-300);}
.crumb a{color:var(--ink-500);}
.crumb a:hover{color:var(--brand-700);}
.crumb .current{color:var(--ink-900);font-weight:600;}

.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;
  align-items:center;
}
.page-hero h1{margin-bottom:18px;}
.hero-lead{
  font-size:16px;
  color:var(--ink-500);
  max-width:640px;
  margin-bottom:26px;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  padding:6px 14px;
  border-radius:var(--r-full);
  background:#fff;
  border:1px solid var(--brand-100);
  color:var(--brand-700);
}
.tag i{font-size:11px;}
.tag.tag-orange{background:var(--accent-50);border-color:#F3D9C9;color:var(--accent-600);}

.hero-art{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
  border:1px solid var(--line);
  background:var(--brand-100);
  aspect-ratio:16/11;
}
.hero-art img{width:100%;height:100%;object-fit:cover;}

/* ============ 功能错位网格 ============ */
.feature-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);
  padding:26px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.feature-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-lg);
  border-color:var(--brand-100);
}
.feature-media{
  border-radius:var(--r-md);
  overflow:hidden;
  background:var(--brand-50);
  aspect-ratio:16/10;
  margin-bottom:20px;
}
.feature-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.feature-card:hover .feature-media img{transform:scale(1.04);}

.fc-icon{
  width:44px;
  height:44px;
  border-radius:12px;
  background:var(--brand-50);
  color:var(--brand-700);
  display:grid;
  place-items:center;
  font-size:18px;
  margin-bottom:16px;
  flex-shrink:0;
}
.feature-card h3{margin-bottom:10px;}
.feature-card p{font-size:15px;color:var(--ink-500);line-height:1.8;margin-bottom:14px;}

.fc-points{margin-top:auto;display:flex;flex-direction:column;gap:8px;}
.fc-points li{
  display:flex;
  align-items:flex-start;
  gap:8px;
  font-size:14px;
  color:var(--ink-700);
}
.fc-points i{color:var(--brand-500);font-size:13px;margin-top:5px;}

.feature-card.dark{
  background:var(--brand-900);
  border-color:var(--brand-900);
  color:rgba(255,255,255,.82);
}
.feature-card.dark h3{color:#fff;}
.feature-card.dark p{color:rgba(255,255,255,.72);}
.feature-card.dark .fc-icon{background:rgba(255,255,255,.12);color:#fff;}
.feature-card.dark .fc-points li{color:rgba(255,255,255,.8);}
.feature-card.dark .fc-points i{color:var(--accent-500);}
.feature-card.dark:hover{border-color:var(--brand-500);}
.feature-card.dark .feature-media{background:rgba(255,255,255,.08);}

.badge-jade{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  padding:4px 12px;
  border-radius:var(--r-full);
  background:rgba(18,95,78,.1);
  color:var(--jade-700);
  margin-bottom:14px;
}
.badge-brand{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  padding:4px 12px;
  border-radius:var(--r-full);
  background:var(--brand-50);
  color:var(--brand-700);
  margin-bottom:14px;
}

/* ============ 数据指标条 ============ */
.metrics-wrap{
  background:var(--brand-900);
  border-radius:var(--r-xl);
  padding:44px 40px;
  position:relative;
  overflow:hidden;
  box-shadow:var(--shadow-lg);
}
.metrics-wrap::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:14px 14px;
  pointer-events:none;
}
.metrics-grid{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.metric{
  padding-right:16px;
}
.metric + .metric{border-left:1px solid rgba(255,255,255,.12);padding-left:24px;}
.metric-num{
  font-size:clamp(30px,3.2vw,40px);
  font-weight:700;
  line-height:1.1;
  color:#fff;
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum";
  display:flex;
  align-items:baseline;
  gap:4px;
}
.metric-num .unit{
  font-size:14px;
  font-weight:500;
  color:rgba(255,255,255,.7);
}
.metric-num.accent{color:var(--accent-500);}
.metric-label{
  font-size:13px;
  line-height:1.7;
  color:rgba(255,255,255,.66);
  margin-top:10px;
}

/* ============ 流程时间线 ============ */
.flow{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  counter-reset:flow;
}
.flow-item{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--shadow-sm);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.flow-item:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
  border-color:var(--brand-100);
}
.flow-item::after{
  content:"";
  position:absolute;
  top:44px;
  right:-24px;
  width:24px;
  border-top:1px dashed var(--line);
  display:block;
}
.flow-item:last-child::after{display:none;}
.flow-num{
  width:32px;
  height:32px;
  border-radius:var(--r-sm);
  background:var(--brand-700);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:15px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  margin-bottom:18px;
}
.flow-item h3{margin-bottom:10px;}
.flow-item p{font-size:15px;color:var(--ink-500);line-height:1.8;margin-bottom:0;}

/* ============ 设置建议 ============ */
.setting-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);
  padding:28px;
}
.setting-row{
  display:flex;
  gap:16px;
  padding:18px 0;
  border-bottom:1px dashed var(--line);
}
.setting-row:first-child{padding-top:0;}
.setting-row:last-child{border-bottom:0;padding-bottom:0;}
.setting-key{
  flex:0 0 118px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
  display:flex;
  align-items:center;
  gap:8px;
}
.setting-key i{font-size:13px;color:var(--brand-500);}
.setting-val{font-size:15px;color:var(--ink-500);line-height:1.8;}
.setting-val strong{color:var(--ink-900);font-weight:600;}

.side-art{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-md);
  background:var(--brand-50);
}
.side-art img{width:100%;height:100%;object-fit:cover;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.faq-item.open{
  border-color:var(--brand-100);
  box-shadow:var(--shadow-md);
}
.faq-q{
  position:relative;
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:20px 22px;
  background:none;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.7;
  cursor:pointer;
  transition:color .2s var(--ease);
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;
  top:14px;
  bottom:14px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand-500);
  opacity:0;
  transition:opacity .25s var(--ease);
}
.faq-item.open .faq-q::before{opacity:1;}
.faq-item.open .faq-q{color:var(--brand-900);}
.faq-icon{
  flex-shrink:0;
  width:28px;
  height:28px;
  border-radius:var(--r-full);
  background:var(--brand-50);
  color:var(--brand-700);
  display:grid;
  place-items:center;
  font-size:14px;
  line-height:1;
  transition:transform .25s var(--ease),background-color .25s var(--ease),color .25s var(--ease);
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);
  background:var(--brand-700);
  color:#fff;
}
.faq-a{
  padding:0 22px 22px 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-500);
}
.faq-a p{margin:0;}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  padding:52px 48px;
  background:var(--brand-700);
  box-shadow:var(--shadow-lg);
}
.cta-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  opacity:.35;
}
.cta-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(18,58,97,.95),rgba(27,78,126,.7));
}
.cta-inner{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{
  color:#fff;
  margin-bottom:10px;
}
.cta-inner p{
  color:rgba(255,255,255,.78);
  font-size:15px;
  margin:0;
}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-900);
  color:#fff;
  padding:72px 0 0;
  margin-top:0;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.footer-brand .brand-mark{
  background:rgba(255,255,255,.12);
}
.footer-brand-text{
  font-size:19px;
  font-weight:700;
  color:#fff;
  letter-spacing:.3px;
}
.footer-about{
  font-size:14px;
  line-height:1.9;
  color:rgba(255,255,255,.72);
  margin:0;
  max-width:360px;
}
.site-footer h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:18px;
}
.footer-links li{margin-bottom:12px;}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.78);
}
.footer-links a:hover{color:#fff;}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.78);
  margin-bottom:12px;
}
.footer-contact i{
  color:rgba(255,255,255,.55);
  font-size:13px;
  margin-top:6px;
}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:24px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{
  margin:0;
  font-size:14px;
  color:rgba(255,255,255,.66);
}
.footer-tag{
  font-size:13px;
  color:rgba(255,255,255,.55);
  letter-spacing:.6px;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{max-width:960px;}
  .hero-grid{gap:36px;}
  .nav-list{gap:20px;}
  .metric-num{font-size:32px;}
}

@media (max-width:991px){
  .section{padding:64px 0;}
  .section-tight{padding:56px 0;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .page-hero{padding:40px 0 48px;}
  .hero-art{aspect-ratio:16/9;}
  .metrics-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 20px;}
  .metric{padding-right:0;}
  .metric + .metric{border-left:0;padding-left:0;}
  .metric:nth-child(even){border-left:1px solid rgba(255,255,255,.12);padding-left:20px;}
  .flow{grid-template-columns:1fr;gap:16px;}
  .flow-item::after{display:none;}
  .cta-band{padding:40px 32px;}
  .site-footer{padding-top:56px;}
}

@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .sec-head{margin-bottom:28px;}
  .feature-card{padding:20px;}
  .setting-panel{padding:20px;}
  .setting-row{flex-direction:column;gap:6px;}
  .setting-key{flex:none;}
  .cta-band{padding:32px 22px;border-radius:var(--r-lg);}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn-primary-c,
  .cta-actions .btn-ghost-c{width:100%;}
  .hero-tags{gap:8px;}
  .metrics-wrap{padding:32px 22px;border-radius:var(--r-lg);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (max-width:575px){
  body{font-size:15.5px;}
  .metrics-grid{grid-template-columns:1fr;}
  .metric:nth-child(even){border-left:0;padding-left:0;}
  .metric{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;}
  .metric:first-child{border-top:0;padding-top:0;}
  .btn-primary-c,.btn-ghost-c,.btn-accent-c{width:100%;}
  .brand-text{font-size:17px;}
  .faq-q{font-size:15px;padding:18px 16px;}
  .faq-a{padding:0 16px 18px 16px;}
}

/* roulang page: category3 */
:root{
  --brand-900:#123A61;
  --brand-700:#1B4E7E;
  --brand-500:#2E6DA4;
  --brand-100:#E7EFF7;
  --brand-50:#F3F7FB;
  --accent-600:#D8551F;
  --accent-500:#E2662F;
  --accent-50:#FDF0E9;
  --jade-700:#125F4E;
  --jade-50:#E8F3F0;
  --ink-900:#131A22;
  --ink-700:#2C3745;
  --ink-500:#5C6B7C;
  --ink-300:#93A1B0;
  --line:#E2E8F0;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --surface-2:#FAFBFD;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --shadow-sm:0 1px 2px rgba(19,26,34,.06);
  --shadow-md:0 4px 12px rgba(19,26,34,.06);
  --shadow-lg:0 12px 32px rgba(19,26,34,.08);
  --shadow-brand:0 8px 20px rgba(27,78,126,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);line-height:1.35;font-weight:700;}
p{margin:0;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-900);}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(46,109,164,.35);outline-offset:2px;}

.container{max-width:1200px;width:100%;padding-left:24px;padding-right:24px;}
@media (min-width:992px) and (max-width:1199.98px){
  .container{max-width:960px;}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm);}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:var(--r-md);
  background:var(--brand-700);
  display:grid;place-items:center;
  box-shadow:var(--shadow-sm);
}
.brand-mark svg{width:22px;height:22px;display:block;}
.brand-text{font-size:19px;font-weight:700;color:var(--brand-900);letter-spacing:.2px;white-space:nowrap;}

.nav-list{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-list a{
  position:relative;
  display:inline-flex;align-items:center;
  height:38px;padding:0 12px;
  font-size:15px;font-weight:500;color:var(--ink-700);
  border-radius:var(--r-full);
  transition:color .22s var(--ease),background-color .22s var(--ease);
}
.nav-list a::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:0;height:2px;border-radius:2px;background:var(--brand-700);
  transform:translateX(-50%);
  transition:width .25s var(--ease);
}
.nav-list a:hover{color:var(--brand-700);}
.nav-list a:hover::after{width:18px;}
.nav-list a.is-active{background:var(--brand-50);color:var(--brand-700);font-weight:600;}
.nav-list a.is-active::after{width:0;}

.nav-actions{display:flex;align-items:center;gap:12px;margin-left:8px;}
.nav-toggle{
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-md);
  background:#fff;display:grid;place-content:center;gap:4px;cursor:pointer;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-900);}
.nav-toggle:hover{border-color:var(--brand-100);background:var(--brand-50);}

/* ============ 按钮 ============ */
.btn-primary-c,.btn-ghost-c,.btn-accent-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;
  border-radius:var(--r-md);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .25s var(--ease),background-color .25s var(--ease),color .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.btn-primary-c{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary-c:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-brand);}
.btn-primary-c:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn-ghost-c{background:#fff;border-color:var(--brand-100);color:var(--brand-700);}
.btn-ghost-c:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost-c:active{transform:translateY(0);}
.btn-accent-c{background:var(--accent-600);color:#fff;box-shadow:0 8px 20px rgba(216,85,31,.22);}
.btn-accent-c:hover{background:var(--accent-500);color:#fff;transform:translateY(-1px);}
.btn-accent-c:active{transform:translateY(0);}
.btn-outline-light-c{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;}
.btn-outline-light-c:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-1px);}
.btn-sm-c{height:40px;padding:0 18px;font-size:14px;}
.btn-primary-c:disabled,.btn-ghost-c:disabled,.btn-accent-c:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none;}

.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand-700);
}
.link-more i{transition:transform .25s var(--ease);font-size:13px;}
.link-more:hover i{transform:translateX(3px);}

/* ============ 徽章 / 标签 ============ */
.tag{
  display:inline-flex;align-items:center;
  height:28px;padding:0 12px;
  border-radius:var(--r-full);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.tag-blue{background:var(--brand-50);color:var(--brand-700);}
.tag-orange{background:var(--accent-50);color:var(--accent-600);}
.tag-jade{background:var(--jade-50);color:var(--jade-700);}
.tag-line{background:#fff;border:1px solid var(--line);color:var(--ink-500);}

/* ============ 页头区 ============ */
.page-hero{
  position:relative;
  background:var(--brand-50);
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(27,78,126,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(27,78,126,.055) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--ink-500);
  margin-bottom:18px;
}
.crumb a{color:var(--ink-500);}
.crumb a:hover{color:var(--brand-700);}
.crumb span.sep{color:var(--ink-300);}
.crumb-current{color:var(--ink-900);font-weight:600;}
.page-title{
  font-size:clamp(28px,4.2vw,42px);
  line-height:1.25;
  color:var(--brand-900);
  margin-bottom:16px;
}
.page-lead{
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  max-width:640px;
  margin-bottom:22px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.page-hero-img{
  width:100%;
  height:300px;
  object-fit:cover;
  border-radius:var(--r-xl);
  border:1px solid var(--brand-100);
  box-shadow:var(--shadow-lg);
  background:var(--brand-100);
}

/* ============ 板块基础 ============ */
.section{padding:96px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-tight{padding-top:0;}
.sec-title{font-size:clamp(22px,3vw,30px);color:var(--ink-900);margin-bottom:14px;}
.sec-sub{font-size:16px;color:var(--ink-500);max-width:660px;margin-bottom:32px;}

/* ============ 侧栏目录 ============ */
.side-toc{
  position:sticky;top:96px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);
  padding:24px;
}
.toc-title{
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--ink-300);text-transform:none;
  margin-bottom:12px;
}
.toc-link{
  display:block;position:relative;
  padding:10px 0 10px 16px;
  font-size:15px;color:var(--ink-500);
  transition:color .2s var(--ease);
}
.toc-link::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;
  width:3px;border-radius:2px;background:var(--brand-500);
  transform:scaleY(0);
  transition:transform .25s var(--ease);
}
.toc-link:hover{color:var(--brand-700);}
.toc-link.is-active{color:var(--brand-900);font-weight:600;}
.toc-link.is-active::before{transform:scaleY(1);}
.toc-tip{
  margin-top:18px;padding-top:18px;
  border-top:1px dashed var(--line);
  font-size:13px;line-height:1.7;color:var(--ink-500);
}
.toc-tip strong{color:var(--brand-700);font-weight:600;}

/* ============ FAQ ============ */
.group-title{
  font-size:20px;font-weight:700;color:var(--ink-900);
  display:flex;align-items:center;gap:10px;
  margin:0 0 16px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.group-title .dot{
  width:8px;height:8px;border-radius:2px;background:var(--accent-500);flex:0 0 8px;
}
.faq-group + .faq-group{margin-top:40px;}
.faq-acc .accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg) !important;
  box-shadow:var(--shadow-md);
  margin-bottom:12px;
  overflow:hidden;
}
.faq-acc .accordion-button{
  display:flex;align-items:center;gap:14px;
  width:100%;
  padding:20px 22px;
  font-size:16px;font-weight:600;
  color:var(--ink-900);
  background:var(--surface);
  border:0;border-radius:0 !important;
  box-shadow:none;
  transition:color .22s var(--ease),background-color .22s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--brand-900);
  background:var(--surface-2);
  box-shadow:none;
}
.faq-acc .accordion-button::after{display:none;}
.faq-acc .accordion-button:hover{color:var(--brand-700);}
.faq-acc .accordion-button:focus{box-shadow:none;border:0;}
.faq-acc .accordion-button:focus-visible{box-shadow:0 0 0 3px rgba(46,109,164,.35) inset;}
.faq-q{flex:1 1 auto;text-align:left;}
.faq-icon{
  position:relative;flex:0 0 26px;width:26px;height:26px;
  border-radius:50%;background:var(--brand-50);
  transition:transform .3s var(--ease),background-color .3s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--brand-700);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:2px;}
.faq-icon::after{width:2px;height:12px;}
.faq-acc .accordion-button:not(.collapsed) .faq-icon{transform:rotate(45deg);background:var(--accent-50);}
.faq-acc .accordion-button:not(.collapsed) .faq-icon::before,
.faq-acc .accordion-button:not(.collapsed) .faq-icon::after{background:var(--accent-600);}
.faq-acc .accordion-body{
  padding:4px 22px 22px 22px;
  font-size:15px;line-height:1.8;color:var(--ink-500);
  background:var(--surface-2);
}
.faq-acc .accordion-body p{margin-bottom:10px;}
.faq-acc .accordion-body p:last-child{margin-bottom:0;}
.faq-acc .accordion-body strong{color:var(--ink-900);font-weight:600;}

/* ============ 自查步骤 ============ */
.rounded-media{
  width:100%;height:auto;
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  box-shadow:var(--shadow-lg);
  background:var(--brand-50);
}
.steps{margin-top:8px;}
.step{
  display:flex;gap:18px;
  padding:20px 0;
  border-bottom:1px dashed var(--line);
}
.step:last-child{border-bottom:0;padding-bottom:0;}
.step-num{
  flex:0 0 42px;width:42px;height:42px;
  border-radius:var(--r-sm);
  background:var(--brand-50);
  color:var(--brand-700);
  font-weight:700;font-size:15px;
  display:grid;place-items:center;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.step p{font-size:14.5px;color:var(--ink-500);}

/* ============ 表单卡 ============ */
.feedback-wrap{
  max-width:720px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);
  padding:32px;
}
.feedback-wrap h2{font-size:22px;margin-bottom:10px;}
.feedback-wrap .fb-lead{font-size:15px;color:var(--ink-500);margin-bottom:24px;}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:8px;}
.form-row .req{color:var(--accent-600);margin-left:2px;}
.fb-form input,.fb-form textarea{
  width:100%;
  font-family:inherit;
  font-size:15px;
  color:var(--ink-900);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.fb-form input{height:46px;padding:0 14px;}
.fb-form textarea{min-height:140px;padding:12px 14px;line-height:1.7;resize:vertical;}
.fb-form input:focus,.fb-form textarea:focus{
  outline:none;
  border-color:var(--brand-500);
  box-shadow:0 0 0 3px rgba(46,109,164,.15);
}
.fb-form input::placeholder,.fb-form textarea::placeholder{color:var(--ink-300);}
.form-hint{font-size:13px;color:var(--ink-300);margin-top:8px;}
.form-alert{
  display:flex;align-items:flex-start;gap:10px;
  padding:14px 16px;
  border-radius:var(--r-sm);
  font-size:14px;line-height:1.7;
  margin-bottom:22px;
}
.form-alert-ok{background:var(--jade-50);color:var(--jade-700);border:1px solid rgba(18,95,78,.18);}
.form-alert-err{background:var(--accent-50);color:var(--accent-600);border:1px solid rgba(216,85,31,.22);}

/* ============ CTA 条 ============ */
.cta-bar{
  background:var(--brand-700);
  border-radius:var(--r-xl);
  padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow-lg);
  position:relative;overflow:hidden;
}
.cta-bar::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:40px 40px;
  pointer-events:none;
}
.cta-bar > *{position:relative;z-index:1;}
.cta-bar h2{color:#fff;font-size:clamp(20px,2.6vw,26px);margin-bottom:8px;}
.cta-bar p{color:rgba(255,255,255,.82);font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-900);
  color:#fff;
  padding:72px 0 0;
  margin-top:96px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand-text{font-size:19px;font-weight:700;color:#fff;}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.78);}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-links li{margin-bottom:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.78);}
.footer-links a:hover{color:#fff;}
.footer-contact li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:rgba(255,255,255,.78);
  margin-bottom:12px;line-height:1.7;
}
.footer-contact i{margin-top:5px;color:rgba(255,255,255,.6);}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.62);}
.footer-tag{font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.04em;}

/* ============ 移动端抽屉 ============ */
.mobile-nav{width:320px;max-width:88vw;border-left:1px solid var(--line);}
.mobile-nav .offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:18px 20px;
}
.mobile-nav .brand-text{font-size:17px;}
.mobile-nav .offcanvas-body{padding:12px 20px 24px;display:flex;flex-direction:column;}
.m-nav-list li{border-bottom:1px solid var(--line);}
.m-nav-list a{
  display:flex;align-items:center;
  height:48px;font-size:15px;font-weight:500;
  color:var(--ink-700);
}
.m-nav-list a.is-active{color:var(--brand-700);font-weight:600;}
.m-cta{margin-top:22px;width:100%;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .cta-bar{padding:34px 32px;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .site-footer{padding-top:56px;margin-top:72px;}
  .side-toc{position:static;padding:18px;}
  .toc-title{margin-bottom:10px;}
  .toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch;}
  .toc-list li{flex:0 0 auto;}
  .toc-link{
    white-space:nowrap;
    padding:8px 14px;
    border:1px solid var(--line);
    border-radius:var(--r-full);
    font-size:14px;
  }
  .toc-link::before{display:none;}
  .toc-link.is-active{background:var(--brand-50);border-color:var(--brand-100);}
  .toc-tip{margin-top:14px;padding-top:14px;}
  .cta-bar{flex-direction:column;align-items:flex-start;gap:22px;}
}
@media (max-width:767.98px){
  .page-hero{padding:40px 0 48px;}
  .section{padding:56px 0;}
  .sec-sub{margin-bottom:24px;}
  .faq-acc .accordion-button{padding:16px 18px;font-size:15px;gap:10px;}
  .faq-acc .accordion-body{padding:2px 18px 18px 18px;}
  .feedback-wrap{padding:22px;}
  .cta-bar{padding:28px 22px;border-radius:var(--r-lg);}
  .cta-actions{width:100%;}
  .cta-actions .btn-primary-c,.cta-actions .btn-ghost-c,.cta-actions .btn-accent-c,.cta-actions .btn-outline-light-c{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
}
@media (max-width:575.98px){
  body{font-size:15.5px;}
  .nav-inner{height:64px;gap:12px;}
  .brand-text{font-size:17px;}
  .brand-mark{width:32px;height:32px;}
  .page-title{font-size:clamp(24px,7vw,30px);}
  .btn-primary-c,.btn-ghost-c,.btn-accent-c{height:44px;padding:0 18px;font-size:14.5px;}
  .step{flex-direction:column;gap:10px;}
  .step-num{flex:0 0 36px;width:36px;height:36px;}
}