/* roulang page: index */
:root{
  --c-brand:#15559C;
  --c-brand-deep:#0B2B4B;
  --c-brand-mid:#2E8FD8;
  --c-brand-soft:#E8F1FB;
  --c-accent:#F2811D;
  --c-accent-deep:#D9740F;
  --c-accent-soft:#FFF1E4;
  --c-ink:#16222E;
  --c-text:#46586A;
  --c-muted:#7D8C9B;
  --c-line:#E4ECF4;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-bg-deep:#F0F5FA;
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:88px;
  --r-sm:8px;--r-md:12px;--r-lg:16px;--r-pill:999px;
  --shadow-1:0 2px 6px rgba(15,42,70,.06);
  --shadow-2:0 8px 24px rgba(15,42,70,.08);
  --shadow-3:0 18px 40px rgba(15,42,70,.12);
  --fs-h1:clamp(28px,4vw,44px);
  --fs-h2:clamp(22px,2.6vw,30px);
  --fs-h3:20px;
  --fs-lead:17px;
  --fs-body:16px;
  --fs-sm:14px;
  --fs-xs:13px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
  font-size:var(--fs-body);
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-md);}
a{color:var(--c-brand);text-decoration:none;text-underline-offset:3px;transition:color .24s var(--ease);}
a:hover{color:var(--c-brand-mid);}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;letter-spacing:-.2px;}
h1{font-size:var(--fs-h1);line-height:1.2;}
h2{font-size:var(--fs-h2);line-height:1.3;}
h3{font-size:var(--fs-h3);line-height:1.4;font-weight:600;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.sec{padding:88px 0;}
.sec-alt{background:var(--c-bg-alt);}
.sec-head{max-width:760px;margin-bottom:var(--sp-7);}
.overline{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--c-muted);
  font-weight:600;margin-bottom:var(--sp-3);
}
.sec-head h2{margin-bottom:var(--sp-3);}
.sec-head p{font-size:var(--fs-lead);color:var(--c-text);margin:0;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:var(--fs-sm);color:var(--c-brand);}
.link-arrow span{transition:transform .24s var(--ease);}
.link-arrow:hover span{transform:translateX(3px);}

/* 按钮 */
.btn-main,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 28px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.btn-main{background:var(--c-accent);color:#fff;box-shadow:0 6px 18px rgba(242,129,29,.28);}
.btn-main:hover{background:var(--c-accent-deep);color:#fff;transform:translateY(-1px);}
.btn-main:active{transform:translateY(0);}
.btn-line{background:#fff;border-color:var(--c-brand);color:var(--c-brand);}
.btn-line:hover{background:var(--c-brand-soft);color:var(--c-brand);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}

/* 徽章 */
.badge-soft,.badge-warm,.badge-gray{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge-soft{background:var(--c-brand-soft);color:var(--c-brand);}
.badge-warm{background:var(--c-accent-soft);color:var(--c-accent-deep);}
.badge-gray{background:#EEF2F7;color:var(--c-muted);}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1040;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.nav-inner{display:flex;align-items:center;gap:var(--sp-5);height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:10px;background:var(--c-brand);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  box-shadow:0 4px 10px rgba(21,85,156,.22);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:-.2px;}
.brand-sub{font-size:11px;color:var(--c-muted);letter-spacing:.04em;}
.nav-list{display:flex;align-items:center;gap:var(--sp-5);margin-left:auto;}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--c-ink);
  transition:color .24s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--c-brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover,.nav-link.is-active{color:var(--c-brand);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-cta{margin-left:var(--sp-5);}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-line);background:#fff;
  border-radius:var(--r-sm);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);position:relative;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,43,75,.42);opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:1050;
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:340px;background:#fff;
  box-shadow:var(--shadow-3);transform:translateX(100%);
  transition:transform .28s var(--ease);z-index:1060;
  display:flex;flex-direction:column;padding:var(--sp-5);
}
.drawer-open .drawer{transform:translateX(0);}
.drawer-open .drawer-mask{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:var(--sp-4);border-bottom:1px solid var(--c-line);}
.drawer-close{width:36px;height:36px;border:1px solid var(--c-line);background:#fff;border-radius:var(--r-sm);cursor:pointer;font-size:16px;color:var(--c-muted);line-height:1;}
.drawer-nav{display:flex;flex-direction:column;margin-top:var(--sp-2);overflow-y:auto;}
.drawer-nav a{
  display:flex;align-items:center;height:52px;font-size:15px;font-weight:500;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a.is-active{color:var(--c-brand);}
.drawer-foot{margin-top:auto;padding-top:var(--sp-4);}
.drawer-foot .btn-main{width:100%;}

/* Hero */
.hero{
  position:relative;
  padding:72px 0 88px;
  background:linear-gradient(180deg,#FFFFFF 0%,#FFFFFF 62%,var(--c-bg-alt) 100%);
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:var(--sp-7);align-items:center;}
.hero h1{margin-bottom:var(--sp-4);}
.hero-sub{font-size:var(--fs-lead);line-height:1.75;color:var(--c-text);max-width:34em;margin-bottom:var(--sp-6);}
.hero-actions{display:flex;flex-wrap:wrap;gap:var(--sp-3);margin-bottom:var(--sp-7);}
.trust-bar{display:flex;flex-wrap:wrap;gap:var(--sp-5);padding-top:var(--sp-5);border-top:1px solid var(--c-line);}
.trust-item{position:relative;padding-right:var(--sp-5);}
.trust-item:last-child{padding-right:0;}
.trust-item:not(:last-child)::after{
  content:"";position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:1px;height:26px;background:var(--c-line);
}
.trust-item strong{display:block;font-size:15px;color:var(--c-ink);font-weight:600;}
.trust-item span{font-size:var(--fs-xs);color:var(--c-muted);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:var(--shadow-3);
}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);
  background:rgba(21,85,156,.08);pointer-events:none;
}
.hero-badge{
  position:absolute;right:-10px;bottom:-18px;background:#fff;border-radius:var(--r-md);
  box-shadow:var(--shadow-2);padding:12px 18px;display:flex;align-items:center;gap:10px;
}
.hero-badge b{font-size:22px;color:var(--c-accent);line-height:1;font-variant-numeric:tabular-nums;}
.hero-badge span{font-size:var(--fs-xs);color:var(--c-muted);line-height:1.3;}

/* 快捷入口 */
.quick-sec{padding:0 0 88px;background:var(--c-bg-alt);}
.quick-inner{margin-top:-40px;position:relative;z-index:2;}
.quick-item{
  display:flex;flex-direction:column;gap:6px;height:100%;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);
  padding:22px;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.quick-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFE0F2;color:inherit;}
.quick-ico{
  width:38px;height:38px;border-radius:10px;background:var(--c-brand-soft);color:var(--c-brand);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;margin-bottom:6px;
}
.quick-item h3{font-size:17px;margin-bottom:2px;}
.quick-item p{font-size:var(--fs-sm);color:var(--c-muted);margin:0;}
.quick-more{display:inline-flex;align-items:center;gap:6px;font-size:var(--fs-xs);font-weight:600;color:var(--c-brand);margin-top:10px;}
.quick-more i{font-style:normal;transition:transform .24s var(--ease);}
.quick-item:hover .quick-more i{transform:translateX(3px);}

/* 玩法介绍 */
.play-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-8);align-items:center;}
.play-row + .play-row{margin-top:var(--sp-8);}
.play-row.reverse .play-copy{order:2;}
.play-row.reverse .play-media{order:1;}
.play-num{
  display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;
  border-radius:var(--r-sm);background:var(--c-brand);color:#fff;font-size:15px;font-weight:700;
  margin-bottom:var(--sp-4);font-variant-numeric:tabular-nums;
}
.play-copy h3{font-size:22px;margin-bottom:var(--sp-3);}
.play-copy p{font-size:15px;line-height:1.85;color:var(--c-text);margin-bottom:var(--sp-4);}
.play-points li{
  position:relative;padding-left:20px;font-size:var(--fs-sm);color:var(--c-text);line-height:1.9;
}
.play-points li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--c-brand-mid);
}
.play-media img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-2);}

/* 奖励预览 */
.reward-grid{display:grid;grid-template-columns:2fr 1fr;gap:var(--sp-5);}
.reward-main{
  grid-row:span 2;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.reward-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.reward-main img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.reward-main .rm-body{padding:var(--sp-5);}
.reward-main h3{font-size:19px;margin:var(--sp-3) 0 var(--sp-2);}
.reward-main p{font-size:var(--fs-sm);margin:0;color:var(--c-text);}
.reward-side{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);
  padding:var(--sp-5);display:flex;flex-direction:column;gap:var(--sp-2);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.reward-side:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.reward-side h3{font-size:17px;}
.reward-side p{font-size:var(--fs-sm);color:var(--c-muted);margin:0;}
.dot-row{display:flex;align-items:center;gap:8px;margin-bottom:4px;}
.dot{width:9px;height:9px;border-radius:50%;background:var(--c-brand);}
.dot.warm{background:var(--c-accent);}
.reward-foot{margin-top:var(--sp-6);}

/* 任务面板 */
.task-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.task-row{
  display:grid;grid-template-columns:1.4fr 120px 1fr;gap:var(--sp-5);align-items:center;
  padding:20px var(--sp-5);border-bottom:1px solid var(--c-line);
  transition:background .24s var(--ease);
}
.task-row:last-child{border-bottom:none;}
.task-row:hover{background:var(--c-bg-alt);}
.task-row.head{
  background:var(--c-brand-deep);color:#fff;font-size:var(--fs-xs);
  font-weight:600;letter-spacing:.04em;padding-top:14px;padding-bottom:14px;
}
.task-name{font-size:15px;font-weight:600;color:var(--c-ink);}
.task-note{display:block;font-size:var(--fs-xs);color:var(--c-muted);font-weight:400;margin-top:2px;}
.bar{height:8px;border-radius:var(--r-pill);background:#DDE8F3;overflow:hidden;}
.bar i{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--c-brand),var(--c-brand-mid));}
.bar i.done{background:linear-gradient(90deg,var(--c-accent-deep),var(--c-accent));}
.task-num{font-size:var(--fs-xs);color:var(--c-muted);margin-top:6px;font-variant-numeric:tabular-nums;}

/* 资讯 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-5);}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);height:100%;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.news-thumb{position:relative;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.news-thumb .badge-soft{position:absolute;left:12px;top:12px;background:#fff;box-shadow:var(--shadow-1);}
.news-body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.news-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body h3 a{color:var(--c-ink);}
.news-body h3 a:hover{color:var(--c-brand);}
.news-desc{font-size:var(--fs-sm);color:var(--c-text);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;padding-top:var(--sp-3);border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;font-size:var(--fs-xs);color:var(--c-muted);}
.news-meta a{font-weight:600;font-size:var(--fs-xs);}
.empty-box{
  background:var(--c-bg-alt);border:1px dashed #CFE0F2;border-radius:var(--r-lg);
  padding:var(--sp-8) var(--sp-5);text-align:center;color:var(--c-muted);font-size:var(--fs-sm);
}
.empty-box .ico{
  width:44px;height:44px;border-radius:50%;border:2px solid #CFE0F2;margin:0 auto var(--sp-3);
  display:flex;align-items:center;justify-content:center;color:#A9BED4;font-size:18px;
}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-5);align-items:start;}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);padding:0 20px;margin-bottom:var(--sp-3);
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.faq-item[open]{border-color:#CFE0F2;box-shadow:var(--shadow-2);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 0;font-size:15px;font-weight:600;color:var(--c-ink);
  display:flex;align-items:flex-start;gap:10px;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";flex:0 0 auto;width:3px;height:16px;border-radius:2px;background:var(--c-brand);margin-top:4px;
  transition:background .24s var(--ease);
}
.faq-item[open] summary::before{background:var(--c-accent);}
.faq-item summary::after{
  content:"+";margin-left:auto;color:var(--c-brand);font-size:18px;line-height:1;font-weight:600;
}
.faq-item[open] summary::after{content:"−";}
.faq-body{font-size:15px;line-height:1.8;color:var(--c-text);padding:0 0 18px 13px;border-top:1px solid var(--c-line);padding-top:14px;margin-top:-1px;}

/* CTA 带 */
.cta-band{background:var(--c-brand-soft);padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-6);flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:6px;}
.cta-inner p{margin:0;font-size:var(--fs-sm);color:var(--c-text);}

/* 页脚 */
.site-footer{background:var(--c-brand-deep);color:rgba(255,255,255,.72);padding:64px 0 0;font-size:var(--fs-sm);}
.f-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:var(--sp-7);padding-bottom:var(--sp-7);}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:var(--sp-4);}
.f-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none;}
.f-brand .brand-name{color:#fff;}
.f-brand .brand-sub{color:rgba(255,255,255,.55);}
.site-footer p{color:rgba(255,255,255,.72);line-height:1.9;margin:0 0 var(--sp-3);}
.f-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:var(--sp-4);}
.f-links li{margin-bottom:10px;}
.f-links a{color:rgba(255,255,255,.72);display:inline-block;transition:color .24s var(--ease),transform .24s var(--ease);}
.f-links a:hover{color:#fff;transform:translateX(2px);}
.f-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:var(--sp-4);justify-content:space-between;
  font-size:var(--fs-xs);color:rgba(255,255,255,.55);
}
.f-bottom a{color:rgba(255,255,255,.55);}
.f-bottom a:hover{color:#fff;}

/* 响应式 */
@media (max-width:1199px){
  .nav-list{gap:var(--sp-4);}
}
@media (max-width:991px){
  .nav-list,.nav-cta{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .hero{padding:48px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:var(--sp-6);}
  .hero-media{order:2;}
  .hero-media img{aspect-ratio:16/10;max-height:240px;}
  .hero-badge{right:12px;bottom:-14px;}
  .quick-sec{padding-bottom:64px;}
  .sec{padding:64px 0;}
  .play-row{grid-template-columns:1fr;gap:var(--sp-5);}
  .play-row.reverse .play-copy{order:1;}
  .play-row.reverse .play-media{order:2;}
  .play-media img{aspect-ratio:16/10;}
  .reward-grid{grid-template-columns:1fr;}
  .reward-main{grid-row:auto;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .faq-wrap{grid-template-columns:1fr;}
  .f-grid{grid-template-columns:1fr 1fr;gap:var(--sp-6);}
  .task-row{grid-template-columns:1fr 90px;gap:12px;}
  .task-row .bar-cell{grid-column:1 / -1;}
}
@media (max-width:767px){
  .wrap{padding:0 16px;}
  .sec{padding:56px 0;}
  .news-grid{grid-template-columns:1fr;}
  .hero-actions .btn-main,.hero-actions .btn-line{flex:1 1 auto;}
  .trust-bar{gap:var(--sp-4);}
  .trust-item{padding-right:var(--sp-4);}
  .trust-item strong{font-size:14px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .f-grid{grid-template-columns:1fr;}
  .hero-badge{padding:8px 12px;}
  .hero-badge b{font-size:18px;}
}
@media (max-width:575px){
  .task-row{grid-template-columns:1fr;gap:10px;}
  .quick-item{padding:18px;}
}

/* roulang page: article */
:root{
  --c-brand:#15559C;
  --c-brand-deep:#0B2B4B;
  --c-brand-mid:#2E8FD8;
  --c-brand-soft:#E8F1FB;
  --c-accent:#F2811D;
  --c-accent-deep:#D9740F;
  --c-accent-soft:#FFF1E4;
  --c-ink:#16222E;
  --c-text:#46586A;
  --c-muted:#7D8C9B;
  --c-line:#E4ECF4;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-bg-deep:#F0F5FA;
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:88px;
  --r-sm:8px;--r-md:12px;--r-lg:16px;--r-pill:999px;
  --shadow-1:0 2px 6px rgba(15,42,70,.06);
  --shadow-2:0 8px 24px rgba(15,42,70,.08);
  --shadow-3:0 18px 40px rgba(15,42,70,.12);
  --fs-h1:clamp(28px,4vw,44px);
  --fs-h2:clamp(22px,2.6vw,30px);
  --ease:.24s cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;color:var(--c-text);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--c-brand-deep)}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;line-height:1.3}
p{margin:0 0 1em}
ul,ol{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1000;background:#fff;border-bottom:1px solid var(--c-line);transition:box-shadow var(--ease)}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand:hover{color:inherit}
.brand-mark{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,#15559C,#0B2B4B);display:grid;place-items:center;flex-shrink:0}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:15px;font-weight:700;color:var(--c-ink);letter-spacing:-.2px}
.brand-sub{font-size:11px;color:var(--c-muted);letter-spacing:.08em}
.nav-list{display:flex;align-items:center;gap:22px;margin-left:auto}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-ink);padding:6px 0;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--c-brand);transition:right var(--ease)}
.nav-link:hover{color:var(--c-brand)}
.nav-link:hover::after,.nav-link.is-active::after{right:0}
.nav-link.is-active{color:var(--c-brand)}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-accent);color:#fff;font-size:15px;font-weight:600;
  padding:14px 28px;border:none;border-radius:var(--r-sm);cursor:pointer;
  box-shadow:0 6px 18px rgba(242,129,29,.28);
  transition:background var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-main:hover{background:var(--c-accent-deep);color:#fff;transform:translateY(-1px)}
.btn-main:active{transform:translateY(0)}
.btn-sm{padding:10px 22px;font-size:14px;height:40px}
.nav-cta{margin-left:8px;flex-shrink:0}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--c-brand);font-size:15px;font-weight:600;
  padding:13px 26px;border:1.5px solid var(--c-brand);border-radius:var(--r-sm);
  transition:background var(--ease),color var(--ease),transform var(--ease);
}
.btn-ghost:hover{background:var(--c-brand-soft);color:var(--c-brand-deep);transform:translateY(-1px)}
.nav-toggle{display:none;position:relative;z-index:1002;width:44px;height:40px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-sm);cursor:pointer}
.nav-toggle span,.nav-toggle::before,.nav-toggle::after{content:"";position:absolute;left:11px;right:11px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.nav-toggle::before{top:13px}
.nav-toggle span{top:19px}
.nav-toggle::after{top:25px}
body.nav-open .nav-toggle::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span{opacity:0}
body.nav-open .nav-toggle::after{transform:translateY(-6px) rotate(-45deg)}
body.nav-open{overflow:hidden}
body.nav-open::after{content:"";position:fixed;inset:0;background:rgba(11,43,75,.45);z-index:1000}

/* ---------- page head ---------- */
.page-head{position:relative;background:var(--c-bg-alt);border-bottom:1px solid var(--c-line);overflow:hidden}
.page-head::before{
  content:"";position:absolute;right:0;top:0;bottom:0;width:46%;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:.22;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 55%);
  mask-image:linear-gradient(90deg,transparent,#000 55%);
}
.page-head .wrap{position:relative;padding-top:34px;padding-bottom:38px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--c-muted);margin-bottom:14px}
.crumb a{color:var(--c-text)}
.crumb a:hover{color:var(--c-brand)}
.crumb .sep{color:#B7C5D3}
.crumb .now{color:var(--c-muted);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge-tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;font-size:12px;font-weight:600;border-radius:var(--r-pill);background:var(--c-brand-soft);color:var(--c-brand);letter-spacing:.02em}
.badge-tag.orange{background:var(--c-accent-soft);color:var(--c-accent-deep)}
.article-head h1{font-size:var(--fs-h1);line-height:1.25;letter-spacing:-.2px;margin:14px 0 14px;max-width:900px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--c-muted)}
.meta-row .dot{color:#C3CFDB}
.head-rule{width:48px;height:3px;border-radius:2px;background:var(--c-brand);margin-top:20px}

/* ---------- layout ---------- */
.page-main{padding:56px 0 0}
@media (min-width:992px){.page-main{padding:72px 0 0}}
.layout{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:992px){.layout{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:56px}}

/* ---------- article body ---------- */
.article-body{font-size:16.5px;line-height:1.85;color:var(--c-text);max-width:72ch}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1em}
.article-body h2{font-size:var(--fs-h2);margin:36px 0 14px;padding-left:14px;position:relative;line-height:1.35}
.article-body h2::before{content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:4px;border-radius:2px;background:var(--c-brand)}
.article-body h3{font-size:19px;font-weight:600;color:var(--c-ink);margin:26px 0 10px}
.article-body h4{font-size:17px;font-weight:600;color:var(--c-ink);margin:20px 0 8px}
.article-body a{color:var(--c-brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--c-brand-deep)}
.article-body strong{color:var(--c-ink)}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 1em;line-height:1.9}
.article-body li{margin-bottom:6px}
.article-body li::marker{color:var(--c-brand);font-weight:600}
.article-body blockquote{margin:24px 0;padding:16px 22px;border-left:3px solid var(--c-accent);background:var(--c-accent-soft);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--c-text)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body figure{margin:24px 0}
.article-body img{border-radius:var(--r-md);width:100%;height:auto}
.article-body figcaption{font-size:13px;color:var(--c-muted);margin-top:8px;text-align:center;line-height:1.7}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;font-variant-numeric:tabular-nums}
.article-body thead th{background:var(--c-bg-alt);color:var(--c-ink);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line)}
.article-body code{background:var(--c-bg-deep);padding:2px 6px;border-radius:var(--r-sm);font-size:14px}
.article-body hr{border:none;border-top:1px solid var(--c-line);margin:32px 0}
.article-empty{background:var(--c-bg-alt);border:1px solid var(--c-line);border-radius:var(--r-lg);padding:56px 24px;text-align:center}
.article-empty .ico{width:44px;height:44px;margin:0 auto 14px;border-radius:50%;background:#fff;border:1px solid var(--c-line);display:grid;place-items:center;color:var(--c-muted)}
.article-empty p{font-size:14px;color:var(--c-muted);margin-bottom:18px}

/* ---------- sidebar ---------- */
.side{display:flex;flex-direction:column;gap:20px}
@media (min-width:992px){.side{position:sticky;top:96px;align-self:start}}
.side-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);padding:22px}
.side-title{font-size:15px;font-weight:700;color:var(--c-ink);margin:0 0 14px;padding-bottom:12px;border-bottom:1px solid var(--c-line);display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--c-brand)}
.toc{list-style:none;padding:0;margin:0}
.toc li{margin-bottom:2px}
.toc a{display:block;font-size:14px;color:var(--c-text);padding:7px 0 7px 12px;border-left:2px solid transparent;line-height:1.6}
.toc a:hover,.toc a.on{color:var(--c-brand);border-left-color:var(--c-brand);background:var(--c-brand-soft);border-radius:0 var(--r-sm) var(--r-sm) 0}
.side-post{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--c-line)}
.side-post:last-child{border-bottom:none;padding-bottom:0}
.side-post .thumb{width:76px;height:56px;flex-shrink:0;border-radius:var(--r-sm);overflow:hidden;background:var(--c-bg-alt)}
.side-post .thumb img{width:100%;height:100%;object-fit:cover}
.side-post .t{font-size:14px;font-weight:600;color:var(--c-ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.side-post .d{font-size:12px;color:var(--c-muted);margin-top:4px}
.side-post:hover .t{color:var(--c-brand)}
.side-card.tint{background:var(--c-brand-soft);border-color:#D5E5F6}
.side-card.tint p{font-size:14px;color:var(--c-text);margin-bottom:16px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-brand)}
.link-arrow::after{content:"→";transition:transform var(--ease)}
.link-arrow:hover::after{transform:translateX(3px)}

/* ---------- related ---------- */
.section{padding:56px 0}
@media (min-width:992px){.section{padding:72px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.overline{font-size:12px;letter-spacing:.08em;color:var(--c-muted);margin-bottom:8px}
.section-head h2{font-size:var(--fs-h2)}
.grid-3{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:576px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.rel-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);overflow:hidden;transition:transform var(--ease),box-shadow var(--ease)}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.rel-card .cover{aspect-ratio:16/9;background:var(--c-bg-alt);overflow:hidden}
.rel-card .cover img{width:100%;height:100%;object-fit:cover}
.rel-card .body{padding:20px}
.rel-card h3{font-size:17px;font-weight:600;line-height:1.55;margin:10px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .foot{margin-top:auto;font-size:13px;color:var(--c-muted);display:flex;align-items:center;justify-content:space-between;gap:10px}
.back-list{margin-top:26px}

/* ---------- CTA band ---------- */
.cta-band{background:var(--c-brand-soft);border-top:1px solid #DCEAF8;border-bottom:1px solid #DCEAF8}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding:44px 0}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px}
.cta-band p{margin:0;color:var(--c-text);font-size:15px}

/* ---------- footer ---------- */
.site-footer{background:var(--c-brand-deep);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.f-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:44px}
@media (min-width:768px){.f-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.f-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.55)}
.f-grid p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin-bottom:10px}
.f-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.f-links{list-style:none;padding:0;margin:0}
.f-links li{margin-bottom:10px}
.f-links a{font-size:14px;color:rgba(255,255,255,.72);display:inline-block;transition:color var(--ease),transform var(--ease)}
.f-links a:hover{color:#fff;transform:translateX(2px)}
.f-bottom{border-top:1px solid rgba(255,255,255,.14);padding:20px 0;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6)}
.f-bottom a{color:rgba(255,255,255,.72)}
.f-bottom a:hover{color:#fff}

@media (max-width:991px){
  .nav-toggle{display:block;margin-left:auto}
  .nav-cta{display:none}
  .nav-list{
    position:fixed;top:0;right:0;z-index:1001;
    width:84%;max-width:340px;height:100vh;margin:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:84px 24px 28px;transform:translateX(100%);
    box-shadow:var(--shadow-3);overflow-y:auto;transition:transform var(--ease);
  }
  body.nav-open .nav-list{transform:translateX(0)}
  .nav-link{display:flex;align-items:center;height:52px;font-size:16px;border-bottom:1px solid var(--c-line)}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--c-brand);font-weight:700}
  .brand-name{font-size:14px}
}
@media (max-width:575px){
  .wrap{padding:0 16px}
  .nav-inner{height:60px}
  .page-head .wrap{padding-top:26px;padding-bottom:30px}
  .article-body{font-size:16px}
  .side-card{padding:18px}
  .cta-band .inner{padding:34px 0}
  .btn-main,.btn-ghost{width:100%}
}

/* roulang page: category1 */
:root {
      --c-brand: #15559C;
      --c-brand-deep: #0B2B4B;
      --c-brand-mid: #2E8FD8;
      --c-brand-soft: #E8F1FB;
      --c-accent: #F2811D;
      --c-accent-deep: #D9740F;
      --c-accent-soft: #FFF1E4;
      --c-ink: #16222E;
      --c-text: #46586A;
      --c-muted: #7D8C9B;
      --c-line: #E4ECF4;
      --c-bg: #FFFFFF;
      --c-bg-alt: #F5F8FC;
      --c-bg-deep: #F0F5FA;
      --r-sm: 8px;
      --r-md: 12px;
      --r-lg: 16px;
      --r-pill: 999px;
      --shadow-1: 0 2px 6px rgba(15, 42, 70, .06);
      --shadow-2: 0 8px 24px rgba(15, 42, 70, .08);
      --shadow-3: 0 18px 40px rgba(15, 42, 70, .12);
      --sp-1: 4px;
      --sp-2: 8px;
      --sp-3: 12px;
      --sp-4: 16px;
      --sp-5: 24px;
      --sp-6: 32px;
      --sp-7: 48px;
      --sp-8: 64px;
      --sp-9: 88px;
      --fs-h1: clamp(28px, 4vw, 44px);
      --fs-h2: clamp(22px, 2.6vw, 30px);
      --fs-h3: 20px;
      --fs-lead: 17px;
      --fs-body: 16px;
      --fs-sm: 14px;
      --fs-xs: 13px;
      --ff: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      --ease: .24s cubic-bezier(.2, .7, .3, 1);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      padding: 0;
      font-family: var(--ff);
      font-size: var(--fs-body);
      line-height: 1.8;
      color: var(--c-text);
      background: var(--c-bg);
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

    h1,
    h2,
    h3,
    h4,
    p,
    ul,
    ol,
    figure {
      margin: 0;
    }

    h1,
    h2,
    h3,
    h4 {
      color: var(--c-ink);
      font-weight: 700;
      line-height: 1.3;
    }

    h1 {
      font-size: var(--fs-h1);
      line-height: 1.2;
      letter-spacing: -.2px;
    }

    h2 {
      font-size: var(--fs-h2);
    }

    h3 {
      font-size: var(--fs-h3);
      font-weight: 600;
    }

    a {
      color: var(--c-brand);
      text-decoration: none;
      text-underline-offset: 3px;
      transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
    }

    a:hover {
      color: var(--c-accent-deep);
    }

    img {
      max-width: 100%;
      display: block;
    }

    button,
    input {
      font: inherit;
    }

    button {
      cursor: pointer;
    }

    :focus-visible {
      outline: 2px solid var(--c-brand);
      outline-offset: 2px;
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, .96);
      border-bottom: 1px solid var(--c-line);
      transition: box-shadow var(--ease), background var(--ease);
      backdrop-filter: blur(10px);
    }

    .site-header.is-scrolled {
      box-shadow: var(--shadow-1);
      background: #FFFFFF;
    }

    .nav-inner {
      min-height: 68px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      flex: 0 0 auto;
      color: var(--c-ink);
    }

    .brand:hover {
      color: var(--c-ink);
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--c-brand);
      box-shadow: 0 6px 16px rgba(21, 85, 156, .18);
      flex: 0 0 auto;
    }

    .brand-mark svg {
      width: 23px;
      height: 23px;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.2;
    }

    .brand-name {
      font-size: 16px;
      font-weight: 700;
      color: var(--c-ink);
      letter-spacing: .2px;
    }

    .brand-sub {
      font-size: 11px;
      color: var(--c-muted);
      letter-spacing: .12em;
      margin-top: 3px;
    }

    .nav-list {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 24px;
      margin-left: auto;
      margin-right: auto;
    }

    .nav-link {
      position: relative;
      display: inline-flex;
      align-items: center;
      height: 68px;
      color: var(--c-ink);
      font-size: 15px;
      font-weight: 500;
      white-space: nowrap;
    }

    .nav-link::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 2px;
      background: var(--c-brand);
      transform: scaleX(0);
      transform-origin: center;
      transition: transform var(--ease);
    }

    .nav-link:hover,
    .nav-link.is-active {
      color: var(--c-brand);
    }

    .nav-link:hover::after,
    .nav-link.is-active::after {
      transform: scaleX(1);
    }

    .btn-main,
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 48px;
      padding: 13px 28px;
      border-radius: var(--r-pill);
      font-size: 15px;
      font-weight: 600;
      line-height: 1.2;
      border: 1.5px solid transparent;
      transition: background var(--ease), color var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
    }

    .btn-main {
      background: var(--c-accent);
      color: #FFFFFF;
      box-shadow: 0 6px 18px rgba(242, 129, 29, .28);
    }

    .btn-main:hover {
      background: var(--c-accent-deep);
      color: #FFFFFF;
      transform: translateY(-1px);
    }

    .btn-main:active {
      transform: translateY(0);
    }

    .btn-outline {
      background: #FFFFFF;
      color: var(--c-brand);
      border-color: var(--c-brand);
    }

    .btn-outline:hover {
      background: var(--c-brand-soft);
      color: var(--c-brand);
    }

    .btn-sm {
      min-height: 40px;
      padding: 10px 22px;
      font-size: 14px;
    }

    .nav-cta {
      flex: 0 0 auto;
    }

    .nav-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--c-line);
      border-radius: 10px;
      background: #FFFFFF;
      position: relative;
      flex: 0 0 auto;
    }

    .nav-toggle span,
    .nav-toggle span::before,
    .nav-toggle span::after {
      position: absolute;
      left: 50%;
      width: 18px;
      height: 2px;
      border-radius: 2px;
      background: var(--c-ink);
      content: "";
      transform: translateX(-50%);
      transition: transform var(--ease), opacity var(--ease), top var(--ease);
    }

    .nav-toggle span {
      top: 50%;
      margin-top: -1px;
    }

    .nav-toggle span::before {
      top: -6px;
    }

    .nav-toggle span::after {
      top: 6px;
    }

    .site-header.nav-open .nav-toggle span {
      background: transparent;
    }

    .site-header.nav-open .nav-toggle span::before {
      top: 0;
      transform: translateX(-50%) rotate(45deg);
    }

    .site-header.nav-open .nav-toggle span::after {
      top: 0;
      transform: translateX(-50%) rotate(-45deg);
    }

    .page-hero {
      position: relative;
      overflow: hidden;
      background: var(--c-bg-alt);
      border-bottom: 1px solid var(--c-line);
    }

    .page-hero-inner {
      min-height: 270px;
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) minmax(300px, .8fr);
      align-items: stretch;
      gap: 0;
    }

    .page-hero-copy {
      padding: 48px 40px 48px 0;
      display: flex;
      flex-direction: column;
      justify-content: center;
      position: relative;
      z-index: 2;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: var(--fs-xs);
      color: var(--c-muted);
      margin-bottom: 18px;
    }

    .breadcrumb a {
      color: var(--c-brand);
    }

    .breadcrumb span.current {
      color: var(--c-muted);
    }

    .overline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: .08em;
      color: var(--c-muted);
      margin-bottom: 12px;
    }

    .overline::before {
      content: "";
      width: 22px;
      height: 2px;
      background: var(--c-accent);
      border-radius: 2px;
    }

    .page-hero h1 {
      max-width: 720px;
      margin-bottom: 14px;
    }

    .page-hero p {
      color: var(--c-text);
      font-size: var(--fs-lead);
      line-height: 1.75;
      max-width: 620px;
    }

    .page-hero-media {
      position: relative;
      min-height: 270px;
      margin-right: -24px;
      overflow: hidden;
      clip-path: polygon(12% 0, 100% 0, 100% 100%, 0 100%);
    }

    .page-hero-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .page-hero-media::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(232, 241, 251, .92) 0%, rgba(21, 85, 156, .12) 48%, rgba(21, 85, 156, .05) 100%);
    }

    .section {
      padding: 88px 0;
    }

    .section-tight {
      padding: 64px 0;
    }

    .section-alt {
      background: var(--c-bg-alt);
    }

    .section-deep {
      background: var(--c-bg-deep);
    }

    .section-head {
      margin-bottom: 36px;
    }

    .section-head h2 {
      margin-bottom: 12px;
    }

    .section-head p {
      max-width: 720px;
      color: var(--c-text);
      font-size: var(--fs-lead);
      line-height: 1.75;
    }

    .section-head.center {
      text-align: center;
    }

    .section-head.center p {
      margin-left: auto;
      margin-right: auto;
    }

    .section-head.center .overline {
      justify-content: center;
    }

    .row-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
    }

    .brand-panel {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 40px;
      background: var(--c-brand-deep);
      color: rgba(255, 255, 255, .78);
      border-radius: var(--r-lg);
      padding: 40px;
      box-shadow: var(--shadow-3);
      position: relative;
      overflow: hidden;
    }

    .brand-panel::before {
      content: "";
      position: absolute;
      right: -80px;
      top: -80px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(46, 143, 216, .28), transparent 68%);
      pointer-events: none;
    }

    .brand-panel .overline {
      color: rgba(255, 255, 255, .62);
    }

    .brand-panel h2 {
      color: #FFFFFF;
      margin-bottom: 12px;
    }

    .brand-panel p {
      color: rgba(255, 255, 255, .72);
    }

    .archive-list {
      display: grid;
      gap: 0;
      align-content: center;
    }

    .archive-row {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 18px;
      padding: 14px 0;
      border-top: 1px solid rgba(255, 255, 255, .14);
    }

    .archive-row:first-child {
      border-top: 0;
    }

    .archive-row span:first-child {
      color: rgba(255, 255, 255, .58);
      font-size: var(--fs-sm);
      flex: 0 0 auto;
    }

    .archive-row span:last-child {
      color: #FFFFFF;
      font-weight: 500;
      text-align: right;
    }

    .timeline {
      position: relative;
      padding-left: 36px;
    }

    .timeline::before {
      content: "";
      position: absolute;
      left: 8px;
      top: 8px;
      bottom: 8px;
      width: 3px;
      border-radius: 3px;
      background: linear-gradient(180deg, var(--c-brand), var(--c-brand-mid));
    }

    .timeline-item {
      position: relative;
      padding-bottom: 28px;
    }

    .timeline-item:last-child {
      padding-bottom: 0;
    }

    .timeline-dot {
      position: absolute;
      left: -36px;
      top: 8px;
      width: 19px;
      height: 19px;
      border-radius: 50%;
      background: #FFFFFF;
      border: 4px solid var(--c-accent);
      box-shadow: 0 0 0 4px var(--c-bg);
    }

    .timeline-card {
      background: #FFFFFF;
      border: 1px solid var(--c-line);
      border-radius: var(--r-lg);
      padding: 26px 28px;
      box-shadow: var(--shadow-1);
      transition: transform var(--ease), box-shadow var(--ease);
    }

    .timeline-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-2);
    }

    .timeline-year {
      display: inline-flex;
      align-items: center;
      height: 24px;
      padding: 0 10px;
      border-radius: var(--r-pill);
      background: var(--c-accent-soft);
      color: var(--c-accent-deep);
      font-size: 12px;
      font-weight: 600;
      margin-bottom: 10px;
    }

    .timeline-card h3 {
      margin-bottom: 8px;
      font-size: 19px;
    }

    .timeline-card p {
      color: var(--c-text);
      font-size: 15px;
      line-height: 1.8;
    }

    .timeline-feature {
      margin-top: 12px;
      border-radius: var(--r-md);
      overflow: hidden;
      border: 1px solid var(--c-line);
      background: var(--c-bg-alt);
    }

    .timeline-feature img {
      width: 100%;
      aspect-ratio: 16 / 6;
      object-fit: cover;
    }

    .narrative {
      display: grid;
      grid-template-columns: .92fr 1.08fr;
      gap: 56px;
      align-items: center;
    }

    .narrative-media {
      border-radius: var(--r-lg);
      overflow: hidden;
      box-shadow: var(--shadow-2);
      border: 1px solid var(--c-line);
      background: var(--c-bg-alt);
    }

    .narrative-media img {
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
    }

    .narrative-copy h2 {
      margin-bottom: 14px;
    }

    .narrative-copy > p {
      color: var(--c-text);
      font-size: var(--fs-lead);
      line-height: 1.8;
      margin-bottom: 20px;
    }

    .check-list {
      list-style: none;
      padding: 0;
      margin: 0 0 24px;
      display: grid;
      gap: 12px;
    }

    .check-list li {
      position: relative;
      padding-left: 28px;
      color: var(--c-text);
      line-height: 1.7;
    }

    .check-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 7px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: var(--c-brand-soft);
      border: 1px solid rgba(21, 85, 156, .2);
    }

    .check-list li::after {
      content: "";
      position: absolute;
      left: 5px;
      top: 11px;
      width: 6px;
      height: 3px;
      border-left: 2px solid var(--c-brand);
      border-bottom: 2px solid var(--c-brand);
      transform: rotate(-45deg);
    }

    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-weight: 600;
      color: var(--c-brand);
      font-size: 15px;
    }

    .text-link span {
      transition: transform var(--ease);
    }

    .text-link:hover span {
      transform: translateX(3px);
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 24px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 20px;
    }

    .info-card {
      background: #FFFFFF;
      border: 1px solid var(--c-line);
      border-radius: var(--r-lg);
      padding: 28px 24px;
      box-shadow: var(--shadow-1);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
      height: 100%;
    }

    .info-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-2);
      border-color: rgba(21, 85, 156, .24);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      height: 24px;
      padding: 0 10px;
      border-radius: var(--r-pill);
      font-size: 12px;
      font-weight: 600;
      margin-bottom: 14px;
    }

    .badge-blue {
      background: var(--c-brand-soft);
      color: var(--c-brand);
    }

    .badge-orange {
      background: var(--c-accent-soft);
      color: var(--c-accent-deep);
    }

    .badge-gray {
      background: var(--c-bg-deep);
      color: var(--c-text);
    }

    .info-card h3 {
      font-size: 18px;
      margin-bottom: 8px;
    }

    .info-card p {
      color: var(--c-text);
      font-size: 15px;
      line-height: 1.8;
      margin-bottom: 16px;
    }

    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 14px;
      font-weight: 600;
      color: var(--c-brand);
    }

    .card-link i {
      font-size: 12px;
      transition: transform var(--ease);
    }

    .card-link:hover i {
      transform: translateX(3px);
    }

    .related-card {
      display: flex;
      flex-direction: column;
      min-height: 172px;
      padding: 22px;
      background: #FFFFFF;
      border: 1px solid var(--c-line);
      border-radius: var(--r-lg);
      box-shadow: var(--shadow-1);
      color: var(--c-ink);
      position: relative;
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .related-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-2);
      border-color: rgba(21, 85, 156, .3);
      color: var(--c-ink);
    }

    .related-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 28px;
      height: 28px;
      border-radius: 8px;
      background: var(--c-brand-soft);
      color: var(--c-brand);
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 18px;
      font-variant-numeric: tabular-nums;
    }

    .related-card h3 {
      font-size: 17px;
      margin-bottom: 6px;
    }

    .related-card p {
      color: var(--c-muted);
      font-size: 13px;
      margin: 0;
    }

    .related-arrow {
      position: absolute;
      right: 20px;
      bottom: 18px;
      color: var(--c-brand);
      font-size: 18px;
      transition: transform var(--ease);
    }

    .related-card:hover .related-arrow {
      transform: translateX(4px);
    }

    .cta-band {
      background: var(--c-brand-soft);
      border-top: 1px solid rgba(21, 85, 156, .08);
      border-bottom: 1px solid rgba(21, 85, 156, .08);
      padding: 44px 0;
    }

    .cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
    }

    .cta-inner h2 {
      font-size: clamp(21px, 2.3vw, 27px);
      margin-bottom: 6px;
    }

    .cta-inner p {
      color: var(--c-text);
      font-size: 15px;
      margin: 0;
    }

    .site-footer {
      background: var(--c-brand-deep);
      color: rgba(255, 255, 255, .72);
      padding: 64px 0 0;
      font-size: 14px;
      line-height: 1.8;
    }

    .f-grid {
      display: grid;
      grid-template-columns: 1.4fr .8fr .8fr 1fr;
      gap: 40px;
      padding-bottom: 48px;
    }

    .f-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 18px;
    }

    .site-footer .brand-name {
      color: #FFFFFF;
    }

    .site-footer .brand-sub {
      color: rgba(255, 255, 255, .5);
    }

    .site-footer .brand-mark {
      background: rgba(255, 255, 255, .12);
      box-shadow: none;
    }

    .f-title {
      color: #FFFFFF;
      font-weight: 600;
      font-size: 15px;
      margin-bottom: 16px;
    }

    .f-links {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      gap: 10px;
    }

    .f-links a {
      color: rgba(255, 255, 255, .72);
      display: inline-block;
      transition: color var(--ease), transform var(--ease);
    }

    .f-links a:hover {
      color: #FFFFFF;
      transform: translateX(2px);
    }

    .site-footer p {
      color: rgba(255, 255, 255, .72);
      margin-bottom: 12px;
    }

    .f-bottom {
      border-top: 1px solid rgba(255, 255, 255, .14);
      padding: 20px 0 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      color: rgba(255, 255, 255, .56);
      font-size: 13px;
    }

    .f-bottom a {
      color: rgba(255, 255, 255, .72);
    }

    .f-bottom a:hover {
      color: #FFFFFF;
    }

    @media (max-width: 1199.98px) {
      .nav-list {
        gap: 16px;
      }

      .nav-link {
        font-size: 14px;
      }

      .brand-name {
        font-size: 15px;
      }
    }

    @media (max-width: 991.98px) {
      .nav-inner {
        min-height: 60px;
      }

      .nav-toggle {
        display: inline-block;
        margin-left: auto;
      }

      .nav-list {
        position: fixed;
        top: 0;
        right: -100%;
        width: 84%;
        max-width: 360px;
        height: 100vh;
        margin: 0;
        padding: 84px 24px 96px;
        display: flex;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        gap: 0;
        background: #FFFFFF;
        box-shadow: var(--shadow-3);
        z-index: 1002;
        transition: right var(--ease);
        overflow-y: auto;
      }

      .site-header.nav-open .nav-list {
        right: 0;
      }

      .nav-link {
        height: 52px;
        width: 100%;
        border-bottom: 1px solid var(--c-line);
        font-size: 16px;
      }

      .nav-link::after {
        display: none;
      }

      .nav-cta {
        display: none;
      }

      .site-header.nav-open .nav-cta {
        display: inline-flex;
        position: fixed;
        right: 16px;
        bottom: 16px;
        width: calc(84% - 32px);
        max-width: 328px;
        z-index: 1003;
      }

      .site-header.nav-open::after {
        content: "";
        position: fixed;
        inset: 0;
        background: rgba(11, 43, 75, .48);
        z-index: 1001;
        transition: opacity var(--ease);
      }

      .page-hero-inner {
        grid-template-columns: 1fr;
      }

      .page-hero-copy {
        padding: 40px 0 32px;
      }

      .page-hero-media {
        min-height: 220px;
        margin-right: 0;
        border-radius: var(--r-lg);
        margin-bottom: 32px;
        clip-path: none;
      }

      .page-hero-media::after {
        background: linear-gradient(180deg, rgba(232, 241, 251, .1), rgba(21, 85, 156, .12));
      }

      .brand-panel {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 32px;
      }

      .narrative {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .narrative-media {
        order: 2;
      }

      .narrative-copy {
        order: 1;
      }

      .grid-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .f-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 32px;
      }

      .row-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
      }
    }

    @media (max-width: 767.98px) {
      .wrap {
        padding-left: 16px;
        padding-right: 16px;
      }

      .section {
        padding: 60px 0;
      }

      .section-tight {
        padding: 48px 0;
      }

      .brand-name {
        font-size: 14px;
      }

      .brand-sub {
        font-size: 10px;
      }

      .brand-mark {
        width: 34px;
        height: 34px;
      }

      .page-hero-copy {
        padding-top: 32px;
      }

      .page-hero-media {
        min-height: 190px;
        margin-bottom: 24px;
      }

      .timeline {
        padding-left: 28px;
      }

      .timeline::before {
        left: 6px;
      }

      .timeline-dot {
        left: -28px;
        width: 15px;
        height: 15px;
        border-width: 3px;
      }

      .timeline-card {
        padding: 22px 20px;
      }

      .grid-3,
      .grid-4 {
        grid-template-columns: 1fr;
      }

      .cta-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
      }

      .f-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .f-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
      }
    }

    @media (max-width: 575.98px) {
      .brand-text {
        display: none;
      }

      .page-hero h1 {
        font-size: 26px;
      }

      .page-hero p {
        font-size: 16px;
      }

      .brand-panel {
        padding: 26px 20px;
      }

      .archive-row {
        flex-direction: column;
        gap: 2px;
      }

      .archive-row span:last-child {
        text-align: left;
      }

      .btn-main,
      .btn-outline {
        width: 100%;
      }

      .site-header.nav-open .nav-cta {
        width: calc(84% - 32px);
      }
    }

/* roulang page: category2 */
:root{
  --c-brand:#15559C;
  --c-brand-deep:#0B2B4B;
  --c-brand-mid:#2E8FD8;
  --c-brand-soft:#E8F1FB;
  --c-accent:#F2811D;
  --c-accent-deep:#D9740F;
  --c-accent-soft:#FFF1E4;
  --c-ink:#16222E;
  --c-text:#46586A;
  --c-muted:#7D8C9B;
  --c-line:#E4ECF4;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-bg-deep:#F0F5FA;
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:88px;
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-pill:999px;
  --shadow-1:0 2px 6px rgba(15,42,70,.06);
  --shadow-2:0 8px 24px rgba(15,42,70,.08);
  --shadow-3:0 18px 40px rgba(15,42,70,.12);
  --fs-h1:clamp(28px,4vw,44px);
  --fs-h2:clamp(22px,2.6vw,30px);
  --fs-h3:20px;
  --ease:all .24s cubic-bezier(.2,.7,.3,1);
  --bs-body-font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--c-brand);text-decoration:none;transition:var(--ease)}
a:hover{color:var(--c-brand-deep)}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-alt{background:var(--c-bg-alt)}
.section-deep{background:var(--c-bg-deep)}
.overline{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--c-muted);
  font-weight:600;margin-bottom:12px;
}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:var(--fs-h2);line-height:1.3}
.section-head p{margin-top:12px;font-size:17px;line-height:1.75;color:var(--c-text);max-width:70ch}
.rule-line{width:48px;height:3px;background:var(--c-brand);border-radius:2px;margin:16px 0 0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1001;background:#fff;
  border-bottom:1px solid var(--c-line);transition:var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--c-brand),var(--c-brand-deep));
  display:flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:.2px}
.brand-sub{font-size:12px;color:var(--c-muted);letter-spacing:.14em}
.nav-list{display:flex;align-items:center;gap:22px;margin:0 auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-ink);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;
  background:var(--c-brand);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform .24s cubic-bezier(.2,.7,.3,1);
}
.nav-link:hover{color:var(--c-brand)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-brand)}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-accent);color:#fff;font-size:15px;font-weight:600;
  padding:14px 28px;border-radius:var(--r-sm);border:none;cursor:pointer;
  box-shadow:0 6px 18px rgba(242,129,29,.28);transition:var(--ease);
}
.btn-main:hover{background:var(--c-accent-deep);color:#fff;transform:translateY(-1px)}
.btn-main:active{transform:translateY(0)}
.btn-main.btn-sm{padding:0 22px;height:40px;font-size:15px}
.nav-cta{flex-shrink:0}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--c-brand);font-size:15px;font-weight:600;
  padding:13px 26px;border-radius:var(--r-sm);
  border:1.5px solid var(--c-brand);cursor:pointer;transition:var(--ease);
}
.btn-ghost:hover{background:var(--c-brand-soft);color:var(--c-brand-deep)}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;
  color:var(--c-brand);
}
.link-arrow span.arr{transition:transform .24s cubic-bezier(.2,.7,.3,1)}
.link-arrow:hover span.arr{transform:translateX(3px)}
.nav-toggle{
  display:none;width:44px;height:40px;border:1px solid var(--c-line);
  border-radius:var(--r-sm);background:#fff;position:relative;margin-left:auto;cursor:pointer;
}
.nav-toggle span{
  position:absolute;left:50%;top:50%;width:18px;height:2px;background:var(--c-ink);
  transform:translate(-50%,-50%);transition:var(--ease);border-radius:2px;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);
  border-radius:2px;transition:var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(45deg)}

/* ---------- page hero ---------- */
.page-hero{
  background:var(--c-bg-alt);border-bottom:1px solid var(--c-line);
  padding:48px 0 64px;position:relative;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;
  border-radius:50%;background:rgba(46,143,216,.08);pointer-events:none;
}
.crumbs{font-size:13px;color:var(--c-muted);display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:24px}
.crumbs a{color:var(--c-brand)}
.crumbs a:hover{text-decoration:underline;text-underline-offset:3px}
.crumbs .sep{color:#C3D0DC}
.crumbs .cur{color:var(--c-muted)}
.hero-grid{
  display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;
  position:relative;z-index:1;
}
.page-hero h1{font-size:clamp(26px,3.6vw,40px);line-height:1.22;letter-spacing:-.2px}
.page-hero .lead{
  margin-top:16px;font-size:17px;line-height:1.75;color:var(--c-text);max-width:34ch;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;
}
.tag-blue{background:var(--c-brand-soft);color:var(--c-brand)}
.tag-orange{background:var(--c-accent-soft);color:var(--c-accent-deep)}
.tag-grey{background:#EDF2F7;color:var(--c-muted)}
.hero-figure{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-2);
  aspect-ratio:4/3;position:relative;
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;background:rgba(21,85,156,.08);pointer-events:none;
}
.hero-badge{
  position:absolute;right:16px;bottom:16px;background:#fff;border-radius:var(--r-md);
  padding:10px 16px;box-shadow:var(--shadow-2);z-index:2;line-height:1.3;
}
.hero-badge b{display:block;font-size:18px;color:var(--c-brand);font-variant-numeric:tabular-nums}
.hero-badge small{font-size:12px;color:var(--c-muted)}

/* ---------- feature rows ---------- */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  margin-top:64px;
}
.feature-row:first-of-type{margin-top:0}
.feature-row.is-reverse .feature-media{order:2}
.feature-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-2);aspect-ratio:1/1;background:var(--c-bg-alt)}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-body{display:flex;flex-direction:column;align-items:flex-start}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-sm);
  background:var(--c-brand);color:#fff;font-weight:700;font-size:16px;
  font-variant-numeric:tabular-nums;margin-bottom:20px;
}
.feature-body h3{font-size:var(--fs-h3);line-height:1.4;margin-bottom:12px}
.feature-body p{font-size:16px;line-height:1.85;color:var(--c-text);max-width:60ch}
.feature-list{margin-top:16px;width:100%}
.feature-list li{
  position:relative;padding-left:20px;font-size:15px;line-height:1.9;color:var(--c-text);
}
.feature-list li::before{
  content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:50%;
  background:var(--c-brand-mid);
}
.feature-body .link-arrow{margin-top:22px}

/* ---------- term list ---------- */
.panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);padding:8px 28px;
}
.term-item{
  display:grid;grid-template-columns:180px 1fr;gap:24px;
  padding:22px 0;border-top:1px solid var(--c-line);
}
.term-item:first-child{border-top:none}
.term-item dt{
  font-size:16px;font-weight:600;color:var(--c-ink);margin:0;
}
.term-item dd{
  margin:0;font-size:15px;line-height:1.8;color:var(--c-text);
}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.step-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-1);transition:var(--ease);height:100%;
}
.step-card:hover{box-shadow:var(--shadow-2);transform:translateY(-4px)}
.step-card .idx{
  font-size:13px;font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums;
  letter-spacing:.06em;margin-bottom:10px;display:block;
}
.step-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step-card p{font-size:14px;line-height:1.8;color:var(--c-text);margin:0}

/* ---------- faq ---------- */
.faq-acc .accordion-item{
  border:1px solid var(--c-line);border-radius:var(--r-md)!important;
  margin-bottom:12px;overflow:hidden;background:#fff;box-shadow:var(--shadow-1);
}
.faq-acc .accordion-item:last-child{margin-bottom:0}
.faq-acc .accordion-button{
  font-size:16px;font-weight:600;color:var(--c-ink);background:#fff;
  padding:18px 22px;box-shadow:none!important;border-radius:0!important;
  position:relative;line-height:1.6;
}
.faq-acc .accordion-button::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--c-brand);opacity:0;transition:var(--ease);
}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--c-brand);background:var(--c-brand-soft);
}
.faq-acc .accordion-button:not(.collapsed)::before{opacity:1}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-acc .accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2315559C'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
.faq-acc .accordion-button::after{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2315559C'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
.faq-acc .accordion-body{
  font-size:15px;line-height:1.8;color:var(--c-text);padding:2px 22px 22px;
}
.faq-foot{
  margin-top:24px;background:var(--c-brand-soft);border-radius:var(--r-md);
  padding:20px 24px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
}
.faq-foot p{margin:0;font-size:15px;color:var(--c-brand-deep)}

/* ---------- related cats ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cat-card{
  display:flex;flex-direction:column;gap:10px;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-lg);padding:24px;
  box-shadow:var(--shadow-1);transition:var(--ease);height:100%;
}
.cat-card:hover{box-shadow:var(--shadow-2);transform:translateY(-4px);border-color:#CFE0F2}
.cat-card h3{font-size:17px;font-weight:600;color:var(--c-ink)}
.cat-card p{font-size:14px;line-height:1.75;color:var(--c-text);margin:0}
.cat-card .go{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-brand);
}
.cat-card .go .arr{transition:transform .24s cubic-bezier(.2,.7,.3,1)}
.cat-card:hover .go .arr{transform:translateX(4px)}

/* ---------- cta band ---------- */
.cta-band{background:var(--c-brand-soft);padding:48px 0}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(20px,2.2vw,26px);line-height:1.35;max-width:22ch}
.cta-inner p{margin:10px 0 0;font-size:15px;color:var(--c-text);max-width:44ch}

/* ---------- footer ---------- */
.site-footer{background:var(--c-brand-deep);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0}
.f-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.f-brand .brand-name{color:#fff}
.f-brand .brand-sub{color:rgba(255,255,255,.6)}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);margin:0 0 10px}
.f-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.f-links li{margin-bottom:10px}
.f-links a{
  font-size:14px;color:rgba(255,255,255,.72);display:inline-block;transition:var(--ease);
}
.f-links a:hover{color:#fff;transform:translateX(2px)}
.f-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.16);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.f-bottom a{color:rgba(255,255,255,.72)}
.f-bottom a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .cat-grid{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:991.98px){
  .nav-list{
    position:fixed;top:0;right:0;width:84%;max-width:360px;height:100vh;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:84px 24px 96px;margin:0;transform:translateX(100%);
    transition:transform .3s cubic-bezier(.2,.7,.3,1);
    box-shadow:var(--shadow-3);z-index:1002;overflow-y:auto;display:flex;
  }
  body.nav-open .nav-list{transform:translateX(0)}
  .nav-list .nav-link{
    height:52px;display:flex;align-items:center;font-size:16px;
    border-bottom:1px solid var(--c-line);padding:0;
  }
  .nav-list .nav-link::after{display:none}
  .nav-list .nav-link.is-active{color:var(--c-brand)}
  .nav-toggle{display:block}
  .nav-cta{
    position:fixed;bottom:0;right:0;width:84%;max-width:360px;height:64px;
    border-radius:0;z-index:1003;transform:translateX(100%);
    transition:transform .3s cubic-bezier(.2,.7,.3,1);margin:0;box-shadow:none;
    display:flex;align-items:center;justify-content:center;
  }
  body.nav-open .nav-cta{transform:translateX(0)}
  .nav-mask{
    position:fixed;inset:0;background:rgba(11,43,75,.45);opacity:0;visibility:hidden;
    transition:var(--ease);z-index:1000;
  }
  body.nav-open .nav-mask{opacity:1;visibility:visible}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-figure{aspect-ratio:16/9}
  .page-hero .lead{max-width:none}
  .feature-row{grid-template-columns:1fr;gap:28px;margin-top:48px}
  .feature-row.is-reverse .feature-media{order:0}
  .feature-media{aspect-ratio:16/9}
  .steps{grid-template-columns:repeat(2,1fr)}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .f-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .section{padding:64px 0}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px}
  .nav-inner{height:60px;gap:12px}
  .brand-name{font-size:15px}
  .brand-mark{width:34px;height:34px;border-radius:8px}
  .page-hero{padding:32px 0 48px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .section-head p{font-size:16px}
  .steps{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr}
  .term-item{grid-template-columns:1fr;gap:6px;padding:18px 0}
  .panel{padding:4px 20px}
  .f-grid{grid-template-columns:1fr;gap:28px}
  .f-bottom{flex-direction:column;gap:8px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:20px}
  .faq-foot{flex-direction:column;align-items:flex-start}
  .hero-badge{right:12px;bottom:12px;padding:8px 12px}
  .hero-badge b{font-size:16px}
}
@media (max-width:575.98px){
  .brand-sub{display:none}
  .btn-main.btn-sm{height:38px;padding:0 18px;font-size:14px}
  .feature-body h3{font-size:18px}
}

/* roulang page: category3 */
:root{
  --c-brand:#15559C;
  --c-brand-deep:#0B2B4B;
  --c-brand-mid:#2E8FD8;
  --c-brand-soft:#E8F1FB;
  --c-accent:#F2811D;
  --c-accent-deep:#D9740F;
  --c-accent-soft:#FFF1E4;
  --c-ink:#16222E;
  --c-text:#46586A;
  --c-muted:#7D8C9B;
  --c-line:#E4ECF4;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-bg-deep:#F0F5FA;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --shadow-1:0 2px 6px rgba(15,42,70,.06);
  --shadow-2:0 8px 24px rgba(15,42,70,.08);
  --shadow-3:0 18px 40px rgba(15,42,70,.12);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:88px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --fs-h1:clamp(27px,3.8vw,42px);
  --fs-h2:clamp(22px,2.6vw,30px);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--c-brand);text-decoration:none;text-underline-offset:3px;transition:color .24s var(--ease)}
a:hover{color:var(--c-brand-deep)}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== 按钮 ===== */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-accent);color:#fff;font-weight:600;font-size:15px;
  padding:14px 28px;border-radius:var(--r-sm);border:1px solid transparent;
  box-shadow:0 6px 18px rgba(242,129,29,.28);
  transition:transform .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-main:hover{background:var(--c-accent-deep);color:#fff;transform:translateY(-1px)}
.btn-main:active{transform:none;box-shadow:0 3px 10px rgba(242,129,29,.24)}
.btn-main.btn-sm{padding:0 22px;height:40px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--c-brand);border:1.5px solid var(--c-brand);
  padding:12px 26px;border-radius:var(--r-sm);font-weight:600;font-size:15px;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease);
}
.btn-ghost:hover{background:var(--c-brand-soft);color:var(--c-brand-deep);transform:translateY(-1px)}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand);font-weight:600;font-size:15px}
.text-link span{transition:transform .24s var(--ease)}
.text-link:hover span{transform:translateX(3px)}

/* ===== 头部 ===== */
.site-header{
  position:sticky;top:0;z-index:100;background:#fff;
  border-bottom:1px solid var(--c-line);transition:box-shadow .24s var(--ease);
}
.site-header.scrolled{box-shadow:var(--shadow-1)}
.nav-inner{display:flex;align-items:center;gap:20px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--c-brand);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-mark svg{width:22px;height:22px;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-name{font-size:15px;font-weight:700;color:var(--c-ink);letter-spacing:.2px}
.brand-sub{font-size:11px;color:var(--c-muted);letter-spacing:.14em}
.nav-list{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:8px 10px;font-size:15px;font-weight:500;
  color:var(--c-ink);border-radius:var(--r-sm);white-space:nowrap;
  transition:color .24s var(--ease),background .24s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;
  background:var(--c-brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--c-brand)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-brand);font-weight:600}
.nav-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:#fff;position:relative;cursor:pointer;margin-left:auto;padding:0;
}
.nav-toggle span{position:absolute;left:50%;top:50%;width:20px;height:2px;margin:-1px 0 0 -10px;background:var(--c-ink);border-radius:2px;transition:background .24s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--c-ink);border-radius:2px;
  transition:transform .24s var(--ease),top .24s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}

/* ===== 页头 ===== */
.page-hero{background:var(--c-bg-alt);border-bottom:1px solid var(--c-line);padding-top:22px;position:relative;overflow:hidden}
.breadcrumb-line{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);flex-wrap:wrap}
.breadcrumb-line a{color:var(--c-muted)}
.breadcrumb-line a:hover{color:var(--c-brand)}
.breadcrumb-line .sep{color:#C3D2E0}
.breadcrumb-line .current{color:var(--c-muted)}
.hero-inner{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:end;padding-top:28px}
.overline{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--c-muted);
  font-weight:600;padding-left:12px;position:relative;
}
.overline::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:6px;height:6px;border-radius:2px;background:var(--c-accent)}
.page-hero h1{font-size:var(--fs-h1);margin:12px 0 14px;letter-spacing:-.2px}
.page-hero h1 em{font-style:normal;color:var(--c-brand)}
.hero-desc{font-size:17px;line-height:1.75;color:var(--c-text);max-width:36ch;margin-bottom:26px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:38px}
.hero-figure{position:relative;border-radius:var(--r-lg) var(--r-lg) 0 0;overflow:hidden;aspect-ratio:16/11;background:var(--c-brand-soft);box-shadow:var(--shadow-2)}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{content:"";position:absolute;inset:0;background:rgba(21,85,156,.08);pointer-events:none}
.hero-figure-badge{
  position:absolute;right:16px;bottom:16px;z-index:2;background:#fff;color:var(--c-brand);
  font-size:12px;font-weight:600;height:26px;display:inline-flex;align-items:center;
  padding:0 12px;border-radius:var(--r-pill);box-shadow:var(--shadow-2);
}

/* ===== 板块通用 ===== */
.section{padding:88px 0}
.section-alt{background:var(--c-bg-alt)}
.section-deep{background:var(--c-bg-deep)}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head h2{font-size:var(--fs-h2);margin:12px 0 14px;letter-spacing:-.2px}
.sec-desc{font-size:16px;line-height:1.8;color:var(--c-text);margin:0}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.sec-head-row .sec-head{margin-bottom:0}

/* ===== 等级卡 ===== */
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.tier-card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.tier-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.tier-card.is-feature{border:1.5px solid var(--c-brand);box-shadow:var(--shadow-3);margin-top:-10px;padding-top:34px}
.tier-flag{
  position:absolute;top:-13px;left:26px;height:26px;display:inline-flex;align-items:center;
  padding:0 12px;border-radius:var(--r-pill);background:var(--c-brand);color:#fff;
  font-size:12px;font-weight:600;letter-spacing:.04em;box-shadow:var(--shadow-1);
}
.tier-top{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.tier-dot{width:10px;height:10px;border-radius:50%;background:var(--c-brand-mid);flex:0 0 auto}
.tier-card.is-feature .tier-dot{background:var(--c-accent)}
.tier-card h3{font-size:19px}
.tier-for{font-size:14px;line-height:1.75;color:var(--c-muted);margin-bottom:18px;min-height:48px}
.tier-list{border-top:1px solid var(--c-line);padding-top:16px}
.tier-list li{position:relative;padding-left:20px;font-size:14.5px;line-height:1.8;margin-bottom:10px;color:var(--c-text)}
.tier-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;
  background:var(--c-brand-mid);transform:rotate(45deg);
}
.tier-card.is-feature .tier-list li::before{background:var(--c-accent)}
.tier-note{margin-top:18px;font-size:13px;color:var(--c-muted);border-top:1px dashed var(--c-line);padding-top:14px;margin-bottom:0}

/* ===== 奖励条目 ===== */
.reward-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.reward-item{
  display:grid;grid-template-columns:176px 1fr;gap:20px;align-items:stretch;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:18px;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.reward-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFE0F2}
.reward-media{aspect-ratio:1/1;border-radius:var(--r-md);overflow:hidden;background:var(--c-bg-alt)}
.reward-media img{width:100%;height:100%;object-fit:cover}
.reward-body{display:flex;flex-direction:column;justify-content:center}
.reward-body h3{font-size:17.5px;margin-bottom:8px}
.reward-body p{font-size:14.5px;line-height:1.8;color:var(--c-text);margin-bottom:0}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
.tag{
  height:24px;display:inline-flex;align-items:center;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;background:var(--c-brand-soft);color:var(--c-brand);
}
.tag-orange{background:var(--c-accent-soft);color:var(--c-accent-deep)}
.tag-gray{background:#EEF3F8;color:var(--c-muted)}

/* ===== 流程 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:24px;
  box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.step-no{
  width:34px;height:34px;border-radius:var(--r-sm);background:var(--c-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
  margin-bottom:14px;letter-spacing:.04em;
}
.step h3{font-size:16.5px;margin-bottom:8px}
.step p{font-size:14.5px;line-height:1.8;color:var(--c-text);margin:0}

/* ===== 核对要点 ===== */
.notes-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:28px;align-items:stretch}
.notes-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:30px;box-shadow:var(--shadow-1)}
.notes-card h3{font-size:19px;margin-bottom:18px}
.notes-list li{display:grid;grid-template-columns:26px 1fr;gap:12px;padding:14px 0;border-top:1px solid var(--c-line);font-size:15px;line-height:1.8}
.notes-list li:first-child{border-top:none;padding-top:0}
.notes-idx{color:var(--c-brand);font-weight:700;font-size:14px;line-height:1.9}
.warn-card{
  background:var(--c-accent-soft);border:1px solid #F8DCC1;border-left:4px solid var(--c-accent);
  border-radius:var(--r-lg);padding:26px;display:flex;flex-direction:column;justify-content:center;
}
.warn-card h3{font-size:17px;color:var(--c-brand-deep);margin-bottom:10px}
.warn-card p{font-size:14.5px;line-height:1.85;color:#8A5A22;margin:0}
.warn-card .warn-media{margin-top:18px;border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/9;background:#fff}
.warn-card .warn-media img{width:100%;height:100%;object-fit:cover}

/* ===== FAQ ===== */
.faq-wrap{max-width:900px}
.accordion-item{
  border:1px solid var(--c-line);border-left:3px solid transparent;border-radius:var(--r-lg)!important;
  margin-bottom:14px;background:#fff;box-shadow:var(--shadow-1);overflow:hidden;
  transition:border-color .24s var(--ease);
}
.accordion-item:has(.accordion-button:not(.collapsed)){border-left-color:var(--c-brand)}
.accordion-button{
  font-size:16px;font-weight:600;color:var(--c-ink);background:#fff;
  padding:18px 22px;box-shadow:none!important;border-radius:0!important;
}
.accordion-button:not(.collapsed){color:var(--c-brand);background:var(--c-brand-soft)}
.accordion-button:focus{box-shadow:inset 0 0 0 2px rgba(21,85,156,.18)!important;outline:none}
.accordion-button::after{
  width:14px;height:14px;background-size:14px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2315559C'%3E%3Cpath d='M8 11.5 2.5 6l1-1L8 9.5 12.5 5l1 1z'/%3E%3C/svg%3E");
}
.accordion-body{font-size:15px;line-height:1.85;color:var(--c-text);padding:16px 22px 20px}
.accordion-body p{margin-bottom:0}

/* ===== 相关分类 ===== */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.rel-card{
  display:flex;flex-direction:column;justify-content:space-between;gap:18px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:22px;
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFE0F2}
.rel-card h3{font-size:17px;margin-bottom:8px}
.rel-card p{font-size:14px;line-height:1.75;color:var(--c-muted);margin:0}
.rel-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand);font-weight:600;font-size:14px}
.rel-arrow span{transition:transform .24s var(--ease)}
.rel-card:hover .rel-arrow span{transform:translateX(3px)}

/* ===== CTA 带 ===== */
.cta-band{background:var(--c-brand-soft);padding:44px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px}
.cta-inner p{margin:0;font-size:15px;color:var(--c-text)}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-brand-deep);color:rgba(255,255,255,.72);padding:64px 0 0}
.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px 32px;padding-bottom:48px}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.55)}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);margin-bottom:12px}
.f-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.f-links li{margin-bottom:10px}
.f-links a{color:rgba(255,255,255,.72);font-size:14px;display:inline-block;transition:color .24s var(--ease),transform .24s var(--ease)}
.f-links a:hover{color:#fff;transform:translateX(2px)}
.f-bottom{
  border-top:1px solid rgba(255,255,255,.16);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.f-bottom a{color:rgba(255,255,255,.72)}
.f-bottom a:hover{color:#fff}

/* ===== 响应式 ===== */
@media (max-width:991.98px){
  .nav-toggle{display:block}
  .nav-cta{display:none}
  .nav-list{
    position:fixed;top:0;right:0;height:100%;width:84%;max-width:360px;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;margin:0;padding:84px 20px 110px;
    transform:translateX(105%);transition:transform .3s var(--ease);box-shadow:var(--shadow-3);
    z-index:120;overflow-y:auto;
  }
  body.nav-open .nav-list{transform:none}
  body.nav-open::before{content:"";position:fixed;inset:0;background:rgba(11,43,75,.45);z-index:90}
  .nav-link{
    display:flex;align-items:center;height:52px;padding:0 4px;font-size:16px;
    border-bottom:1px solid var(--c-line);border-radius:0;
  }
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--c-brand)}
  .hero-inner{grid-template-columns:1fr;gap:28px}
  .hero-figure{aspect-ratio:16/9;border-radius:var(--r-lg);max-height:260px}
  .hero-actions{margin-bottom:8px}
  .tier-grid{grid-template-columns:1fr;max-width:600px;margin:0 auto}
  .tier-card.is-feature{margin-top:0}
  .reward-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .notes-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .f-grid{grid-template-columns:repeat(2,1fr)}
  .section{padding:64px 0}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px}
  .nav-inner{min-height:60px;gap:12px}
  .brand-name{font-size:14px}
  .section{padding:56px 0}
  .sec-head{margin-bottom:28px}
  .hero-desc{font-size:16px}
  .steps{grid-template-columns:1fr}
}
@media (max-width:575.98px){
  .reward-item{grid-template-columns:1fr;gap:16px}
  .reward-media{aspect-ratio:16/9}
  .rel-grid{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr;gap:32px}
  .tier-card{padding:22px}
  .notes-card{padding:22px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .btn-main,.btn-ghost{padding-left:22px;padding-right:22px}
}

/* roulang page: category4 */
:root{
  --c-brand:#15559C;
  --c-brand-deep:#0B2B4B;
  --c-brand-mid:#2E8FD8;
  --c-brand-soft:#E8F1FB;
  --c-accent:#F2811D;
  --c-accent-deep:#D9740F;
  --c-accent-soft:#FFF1E4;
  --c-ink:#16222E;
  --c-text:#46586A;
  --c-muted:#7D8C9B;
  --c-line:#E4ECF4;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-bg-deep:#F0F5FA;
  --c-green:#1E8A55;
  --c-green-soft:#E6F5EC;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --shadow-1:0 2px 6px rgba(15,42,70,.06);
  --shadow-2:0 8px 24px rgba(15,42,70,.08);
  --shadow-3:0 18px 40px rgba(15,42,70,.12);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;
  --sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:88px;
  --fs-h1:clamp(28px,4vw,44px);
  --fs-h2:clamp(22px,2.6vw,30px);
  --fs-h3:20px;
  --fs-lead:17px;
  --fs-body:16px;
  --fs-sm:14px;
  --fs-xs:13px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
  font-size:var(--fs-body);
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-brand);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--c-brand-deep)}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--c-brand);
  display:grid;place-items:center;flex:none;
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:15px;font-weight:700;color:var(--c-ink);letter-spacing:.2px}
.brand-sub{font-size:11px;color:var(--c-muted);letter-spacing:.12em}
.nav-list{display:flex;align-items:center;gap:22px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;font-size:15px;font-weight:500;
  color:var(--c-ink);padding:22px 0;white-space:nowrap;
  transition:color .24s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:12px;height:2px;
  background:var(--c-brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover,.nav-link.is-active{color:var(--c-brand)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-cta{margin-left:8px;flex:none}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-line);
  background:#fff;border-radius:var(--r-sm);position:relative;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.nav-toggle span{position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.site-header.is-open .nav-toggle span{background:transparent}
.site-header.is-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
.site-header.is-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-accent);color:#fff;border:0;border-radius:var(--r-sm);
  padding:14px 28px;font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  box-shadow:0 6px 18px rgba(242,129,29,.28);
  transition:background .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-main:hover{background:var(--c-accent-deep);color:#fff;transform:translateY(-1px)}
.btn-main:active{transform:translateY(0)}
.btn-main.btn-sm{padding:0 22px;height:40px;font-size:14px;box-shadow:0 4px 14px rgba(242,129,29,.24)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--c-brand);border:1.5px solid var(--c-brand);
  border-radius:var(--r-sm);padding:13px 26px;font-size:15px;font-weight:600;line-height:1.2;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease);
}
.btn-ghost:hover{background:var(--c-brand-soft);color:var(--c-brand-deep);transform:translateY(-1px)}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-brand);font-weight:600;font-size:15px;
}
.link-more i{transition:transform .24s var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* ---------- page head ---------- */
.page-head{
  background:var(--c-bg-alt);
  border-bottom:1px solid var(--c-line);
  padding:48px 0 56px;
}
.page-head-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:var(--fs-xs);color:var(--c-muted);margin-bottom:16px;
}
.crumb a{color:var(--c-muted)}
.crumb a:hover{color:var(--c-brand)}
.crumb em{font-style:normal;color:var(--c-muted)}
.page-head h1{font-size:var(--fs-h1);line-height:1.2;letter-spacing:-.2px;margin-bottom:14px}
.page-head .lead{font-size:var(--fs-lead);line-height:1.75;max-width:34em;margin-bottom:22px}
.head-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;
  background:var(--c-brand-soft);color:var(--c-brand);
}
.tag-accent{background:var(--c-accent-soft);color:var(--c-accent-deep)}
.tag-plain{background:#fff;color:var(--c-text);border:1px solid var(--c-line)}
.page-head-art img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--shadow-2);
}

/* ---------- sections ---------- */
.section{padding:80px 0}
.section-alt{background:var(--c-bg-alt)}
.section-deep{background:var(--c-bg-deep)}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--c-muted);margin-bottom:10px;
}
.section-head{max-width:44em;margin-bottom:40px}
.section-head h2{font-size:var(--fs-h2);margin-bottom:12px}
.section-head p{font-size:var(--fs-lead);line-height:1.75;margin:0}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head-row .section-head{margin-bottom:0}

/* ---------- 概览条 ---------- */
.overview{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);overflow:hidden;margin-top:-38px;position:relative;z-index:2;
}
.overview-item{padding:24px;border-right:1px solid var(--c-line)}
.overview-item:last-child{border-right:0}
.overview-item b{display:block;font-size:20px;color:var(--c-ink);font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:4px}
.overview-item span{font-size:var(--fs-sm);color:var(--c-muted);line-height:1.6;display:block}

/* ---------- 任务面板 ---------- */
.task-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-2);overflow:hidden;
}
.task-head{
  display:grid;grid-template-columns:1.55fr .85fr 1.55fr;gap:16px;
  align-items:center;padding:16px 28px;
  background:var(--c-brand-deep);color:rgba(255,255,255,.82);
  font-size:var(--fs-xs);font-weight:600;letter-spacing:.06em;
}
.task-row{
  display:grid;grid-template-columns:1.55fr .85fr 1.55fr;gap:16px;
  align-items:center;padding:16px 28px;min-height:64px;
  border-top:1px solid var(--c-line);
  transition:background .24s var(--ease);
}
.task-body .task-row:nth-child(odd){background:var(--c-bg-alt)}
.task-body .task-row:hover{background:var(--c-brand-soft)}
.task-name{font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.5;display:block}
.task-note{display:block;font-size:var(--fs-xs);color:var(--c-muted);font-weight:400;margin-top:2px;line-height:1.6}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;white-space:nowrap;
}
.badge-blue{background:var(--c-brand-soft);color:var(--c-brand)}
.badge-orange{background:var(--c-accent-soft);color:var(--c-accent-deep)}
.badge-green{background:var(--c-green-soft);color:var(--c-green)}
.bar-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}
.bar-top span{font-size:var(--fs-xs);color:var(--c-muted)}
.bar-top b{font-size:var(--fs-xs);color:var(--c-ink);font-weight:700;font-variant-numeric:tabular-nums}
.bar{height:8px;border-radius:var(--r-pill);background:#DDE8F3;overflow:hidden}
.bar i{
  display:block;height:100%;border-radius:var(--r-pill);
  background:linear-gradient(90deg,var(--c-brand),var(--c-brand-mid));
  transition:width .4s var(--ease);
}
.bar.is-done i{background:linear-gradient(90deg,var(--c-accent),#F7A356)}
.task-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 28px;border-top:1px solid var(--c-line);background:#fff;
  font-size:var(--fs-xs);color:var(--c-muted);
}

/* ---------- 读取方式 ---------- */
.read-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.read-art img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-2)}
.read-list{margin-top:24px}
.read-item{
  display:grid;grid-template-columns:44px 1fr;gap:16px;
  padding:20px 0;border-top:1px solid var(--c-line);
}
.read-item:last-child{border-bottom:1px solid var(--c-line)}
.read-idx{
  width:44px;height:44px;border-radius:var(--r-sm);background:var(--c-brand);
  color:#fff;font-weight:700;font-size:15px;display:grid;place-items:center;
  font-variant-numeric:tabular-nums;
}
.read-item h3{font-size:17px;font-weight:600;margin-bottom:4px}
.read-item p{font-size:var(--fs-sm);line-height:1.75;margin:0;color:var(--c-text)}

/* ---------- 状态说明卡 ---------- */
.state-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.state-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);padding:24px;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.state-card:hover{box-shadow:var(--shadow-2);transform:translateY(-4px)}
.state-card .badge{margin-bottom:14px}
.state-card h3{font-size:18px;font-weight:600;margin-bottom:8px}
.state-card p{font-size:var(--fs-sm);line-height:1.75;margin:0;color:var(--c-text)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);margin-bottom:12px;overflow:hidden;
  transition:box-shadow .24s var(--ease);
}
.faq-item:hover{box-shadow:var(--shadow-2)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--c-ink);
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  transition:background .24s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";color:var(--c-brand);font-size:20px;line-height:1;
  font-weight:600;flex:none;margin-top:2px;
}
.faq-item[open] summary{box-shadow:inset 3px 0 0 var(--c-brand);background:var(--c-brand-soft)}
.faq-item[open] summary::after{content:"–"}
.faq-body{padding:2px 22px 20px;font-size:15px;line-height:1.8;color:var(--c-text)}
.faq-body p:last-child{margin-bottom:0}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.rel-card{
  display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);padding:24px;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.rel-card:hover{box-shadow:var(--shadow-2);transform:translateY(-4px);border-color:#CFE0F1}
.rel-card h3{font-size:17px;font-weight:600;color:var(--c-ink)}
.rel-card p{font-size:var(--fs-sm);line-height:1.7;color:var(--c-text);margin:0;flex:1}
.rel-card .link-more{font-size:var(--fs-sm)}

/* ---------- CTA ---------- */
.cta-band{background:var(--c-brand-soft)}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:46px 0;
}
.cta-inner h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px}
.cta-inner p{margin:0;font-size:15px;color:var(--c-text);max-width:38em}

/* ---------- footer ---------- */
.site-footer{background:var(--c-brand-deep);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.f-brand .brand-mark{width:34px;height:34px;border-radius:9px}
.f-brand .brand-mark svg{width:20px;height:20px}
.f-brand .brand-name{color:#fff}
.f-brand .brand-sub{color:rgba(255,255,255,.55)}
.site-footer p{font-size:var(--fs-sm);line-height:1.8;margin:0 0 10px;color:rgba(255,255,255,.72)}
.f-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.f-links li{margin-bottom:10px}
.f-links a{
  color:rgba(255,255,255,.72);font-size:var(--fs-sm);
  display:inline-block;transition:color .24s var(--ease),transform .24s var(--ease);
}
.f-links a:hover{color:#fff;transform:translateX(2px)}
.site-footer a{color:rgba(255,255,255,.72)}
.site-footer a:hover{color:#fff}
.f-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:var(--fs-xs);color:rgba(255,255,255,.6);
}
.f-bottom a{color:rgba(255,255,255,.72);text-decoration:underline;text-underline-offset:3px}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .nav-list{gap:16px}
  .nav-link{font-size:14px}
}
@media (max-width:991.98px){
  .nav-inner{height:60px}
  .nav-toggle{display:flex;margin-left:auto}
  .nav-list{
    position:fixed;top:0;right:0;width:84%;max-width:340px;height:100vh;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    margin-left:0;padding:76px 0 96px;
    transform:translateX(100%);transition:transform .3s var(--ease);
    box-shadow:var(--shadow-3);z-index:80;overflow-y:auto;
  }
  .nav-list.is-open{transform:translateX(0)}
  .nav-link{
    display:flex;align-items:center;height:52px;padding:0 24px;
    border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-ink);
  }
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--c-brand);background:var(--c-brand-soft)}
  .nav-cta{
    position:fixed;right:0;bottom:0;width:84%;max-width:340px;
    height:56px;border-radius:0;justify-content:center;margin:0;
    transform:translateX(100%);transition:transform .3s var(--ease);
    z-index:81;display:flex;align-items:center;
  }
  .site-header.is-open .nav-cta{transform:translateX(0)}
  .site-header.is-open::before{
    content:"";position:fixed;inset:0;background:rgba(11,43,75,.42);z-index:70;
  }
  .page-head-inner{grid-template-columns:1fr;gap:28px}
  .page-head-art{order:2}
  .page-head-art img{aspect-ratio:16/9;max-height:240px}
  .overview{grid-template-columns:repeat(2,1fr)}
  .overview-item:nth-child(2){border-right:0}
  .overview-item:nth-child(1),.overview-item:nth-child(2){border-bottom:1px solid var(--c-line)}
  .read-grid{grid-template-columns:1fr;gap:32px}
  .state-grid{grid-template-columns:1fr 1fr}
  .rel-grid{grid-template-columns:1fr 1fr}
  .section{padding:60px 0}
  .f-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section-head-row{flex-direction:column;align-items:flex-start}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px}
  .page-head{padding:32px 0 40px}
  .page-head h1{font-size:clamp(25px,6.4vw,32px)}
  .section{padding:52px 0}
  .task-head{display:none}
  .task-row{
    grid-template-columns:1fr;gap:10px;padding:18px 20px;
    border-top:1px solid var(--c-line);
  }
  .task-body .task-row:nth-child(odd){background:var(--c-bg-alt)}
  .task-cell-status{display:flex;align-items:center;gap:10px}
  .task-cell-status::before{content:"状态";font-size:var(--fs-xs);color:var(--c-muted)}
  .task-foot{padding:14px 20px;flex-direction:column;align-items:flex-start}
  .overview{grid-template-columns:1fr;margin-top:-28px}
  .overview-item{border-right:0;border-bottom:1px solid var(--c-line);padding:18px 20px}
  .overview-item:last-child{border-bottom:0}
  .state-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:20px;padding:36px 0}
  .f-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .f-bottom{flex-direction:column;align-items:flex-start}
  .btn-main,.btn-ghost{width:100%}
  .nav-cta{width:84%}
}
@media (max-width:519.98px){
  .brand-name{font-size:14px}
  .brand-sub{font-size:10px}
  .read-item{grid-template-columns:38px 1fr;gap:12px}
  .read-idx{width:38px;height:38px;font-size:14px}
}

/* roulang page: category5 */
:root{
  --c-brand:#15559C;
  --c-brand-deep:#0B2B4B;
  --c-brand-mid:#2E8FD8;
  --c-brand-soft:#E8F1FB;
  --c-accent:#F2811D;
  --c-accent-deep:#D9740F;
  --c-accent-soft:#FFF1E4;
  --c-ink:#16222E;
  --c-text:#46586A;
  --c-muted:#7D8C9B;
  --c-line:#E4ECF4;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-bg-deep:#F0F5FA;
  --fs-h1:clamp(28px,4vw,44px);
  --fs-h2:clamp(22px,2.6vw,30px);
  --fs-h3:20px;
  --fs-lead:17px;
  --fs-body:16px;
  --fs-sm:14px;
  --fs-xs:13px;
  --sp-1:4px;
  --sp-2:8px;
  --sp-3:12px;
  --sp-4:16px;
  --sp-5:24px;
  --sp-6:32px;
  --sp-7:48px;
  --sp-8:64px;
  --sp-9:88px;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --shadow-1:0 2px 6px rgba(15,42,70,.06);
  --shadow-2:0 8px 24px rgba(15,42,70,.08);
  --shadow-3:0 18px 40px rgba(15,42,70,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
  font-size:var(--fs-body);
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-brand);text-decoration:none;text-underline-offset:3px;transition:color .24s var(--ease);}
a:hover{color:var(--c-brand-deep);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;}
h1{font-size:var(--fs-h1);line-height:1.2;letter-spacing:-.2px;}
h2{font-size:var(--fs-h2);line-height:1.3;}
h3{font-size:var(--fs-h3);line-height:1.4;font-weight:600;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;}

.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--sp-5);}
.section{padding:var(--sp-9) 0;}
.section--alt{background:var(--c-bg-alt);}
.section--deep{background:var(--c-bg-deep);}
.section-head{max-width:760px;margin-bottom:var(--sp-6);}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--c-muted);margin-bottom:var(--sp-3);
}
.section-head h2{margin-bottom:var(--sp-3);}
.section-head p{margin:0;color:var(--c-text);font-size:var(--fs-lead);line-height:1.75;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:var(--c-bg);
  border-bottom:1px solid var(--c-line);transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.nav-inner{display:flex;align-items:center;height:68px;gap:var(--sp-5);}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--c-brand) 0%,var(--c-brand-mid) 100%);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(21,85,156,.24);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:15px;font-weight:700;color:var(--c-ink);letter-spacing:.2px;}
.brand-sub{font-size:11px;color:var(--c-muted);letter-spacing:.12em;margin-top:2px;}
.nav-list{display:flex;align-items:center;gap:var(--sp-5);margin-left:auto;}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--c-ink);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover,.nav-link.is-active{color:var(--c-brand);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border:0;border-radius:var(--r-sm);
  background:var(--c-accent);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 6px 18px rgba(242,129,29,.28);cursor:pointer;
  transition:background .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-main:hover{background:var(--c-accent-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(242,129,29,.32);}
.btn-main:active{transform:translateY(0);}
.btn-sm{padding:0 22px;height:40px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border:1.5px solid var(--c-brand);border-radius:var(--r-sm);
  background:#fff;color:var(--c-brand);font-size:15px;font-weight:600;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease);
}
.btn-ghost:hover{background:var(--c-brand-soft);color:var(--c-brand-deep);transform:translateY(-1px);}
.nav-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;padding:0;
  border:1px solid var(--c-line);border-radius:10px;background:#fff;position:relative;
}
.nav-toggle span{
  position:absolute;left:50%;top:50%;width:18px;height:2px;background:var(--c-ink);
  transform:translate(-50%,-50%);transition:background .2s var(--ease);
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:inherit;
  transition:transform .24s var(--ease),top .24s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg);background:var(--c-ink);}
body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg);background:var(--c-ink);}

/* ---------- page hero ---------- */
.page-hero{
  background:var(--c-bg-alt);
  border-bottom:1px solid var(--c-line);
  padding:var(--sp-7) 0;
}
.page-hero-grid{
  display:grid;grid-template-columns:1.55fr 1fr;gap:var(--sp-7);align-items:center;
}
.crumb{display:flex;flex-wrap:wrap;gap:6px;font-size:var(--fs-xs);color:var(--c-muted);margin-bottom:var(--sp-4);}
.crumb a{color:var(--c-brand);}
.crumb span.sep{color:var(--c-muted);}
.crumb .current{color:var(--c-muted);}
.page-hero h1{margin-bottom:var(--sp-3);}
.page-hero .hero-desc{font-size:var(--fs-lead);line-height:1.75;color:var(--c-text);margin:0 0 var(--sp-5);max-width:640px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--c-brand-soft);color:var(--c-brand);font-size:12px;font-weight:600;
}
.badge-soft.is-orange{background:var(--c-accent-soft);color:var(--c-accent-deep);}
.hero-figure{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-2);
  aspect-ratio:16/10;background:var(--c-bg-deep);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}

/* ---------- search panel ---------- */
.search-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-2);padding:var(--sp-5);
  display:grid;grid-template-columns:1.4fr 1fr;gap:var(--sp-5);align-items:center;
}
.search-panel h2{font-size:var(--fs-h3);margin-bottom:6px;}
.search-panel p{margin:0;font-size:var(--fs-sm);color:var(--c-muted);}
.search-form{display:flex;gap:10px;}
.search-form input{
  flex:1 1 auto;height:44px;padding:0 14px;border:1px solid var(--c-line);
  border-radius:var(--r-sm);font-size:15px;color:var(--c-ink);background:#fff;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.search-form input::placeholder{color:var(--c-muted);}
.search-form input:focus{
  outline:none;border-color:var(--c-brand);
  box-shadow:0 0 0 3px rgba(21,85,156,.14);
}
.search-form .btn-main{height:44px;padding:0 24px;flex:0 0 auto;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:var(--sp-3);}
.tag-row a{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:#fff;font-size:var(--fs-xs);color:var(--c-text);
  transition:border-color .24s var(--ease),color .24s var(--ease),background .24s var(--ease);
}
.tag-row a:hover{border-color:var(--c-brand);color:var(--c-brand);background:var(--c-brand-soft);}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-6);}
.faq-col-title{
  font-size:var(--fs-sm);font-weight:700;color:var(--c-brand);
  padding-bottom:10px;margin-bottom:var(--sp-4);
  border-bottom:2px solid var(--c-brand-soft);letter-spacing:.02em;
}
.accordion-item{
  border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
  background:#fff;box-shadow:var(--shadow-1);margin-bottom:12px;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.accordion-item:hover{box-shadow:var(--shadow-2);}
.accordion-header{margin:0;}
.accordion-button{
  width:100%;padding:16px 18px;background:#fff;border:0;border-radius:0;
  font-size:16px;font-weight:600;color:var(--c-ink);text-align:left;
  display:flex;align-items:center;gap:10px;box-shadow:none;
}
.accordion-button:not(.collapsed){
  background:var(--c-brand-soft);color:var(--c-brand);
  box-shadow:inset 3px 0 0 var(--c-brand);
}
.accordion-button:focus{box-shadow:none;outline:none;}
.accordion-button:focus-visible{box-shadow:inset 0 0 0 2px var(--c-brand);}
.accordion-button::after{
  width:16px;height:16px;flex:0 0 auto;margin-left:auto;background-size:16px;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2315559C'%3E%3Cpath d='M8 11.6 2.4 6l1.3-1.3L8 9l4.3-4.3L13.6 6z'/%3E%3C/svg%3E");
}
.accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2315559C'%3E%3Cpath d='M8 4.4 13.6 10l-1.3 1.3L8 7l-4.3 4.3L2.4 10z'/%3E%3C/svg%3E");
}
.accordion-body{padding:14px 18px 18px;font-size:15px;line-height:1.8;color:var(--c-text);}
.accordion-body strong{color:var(--c-ink);}

/* ---------- help card ---------- */
.help-card{
  background:var(--c-brand-soft);border-radius:var(--r-lg);
  padding:var(--sp-6);display:grid;grid-template-columns:1.6fr .9fr;
  gap:var(--sp-6);align-items:center;margin-top:var(--sp-6);
}
.help-card h3{font-size:var(--fs-h3);margin-bottom:8px;color:var(--c-brand-deep);}
.help-card p{margin:0 0 var(--sp-4);color:var(--c-text);font-size:var(--fs-sm);line-height:1.85;}
.help-list{display:grid;gap:8px;}
.help-list li{
  display:flex;gap:8px;font-size:var(--fs-sm);color:var(--c-text);
}
.help-list li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--c-brand);
  flex:0 0 auto;margin-top:9px;
}
.help-figure{border-radius:var(--r-md);overflow:hidden;aspect-ratio:4/3;background:#fff;box-shadow:var(--shadow-1);}
.help-figure img{width:100%;height:100%;object-fit:cover;}

/* ---------- topic / related cards ---------- */
.card-grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--sp-5);}
.rel-card{
  display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#cfe0f2;}
.rel-card .rel-figure{aspect-ratio:16/9;overflow:hidden;background:var(--c-bg-deep);}
.rel-card .rel-figure img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.rel-card:hover .rel-figure img{transform:scale(1.02);}
.rel-body{padding:var(--sp-5);}
.rel-body h3{font-size:17px;margin-bottom:6px;}
.rel-body p{font-size:var(--fs-xs);color:var(--c-muted);margin:0;}
.rel-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:var(--sp-3);
  font-size:var(--fs-xs);font-weight:600;color:var(--c-brand);
}
.rel-more i{font-style:normal;transition:transform .24s var(--ease);}
.rel-card:hover .rel-more i{transform:translateX(3px);}

/* ---------- cta ---------- */
.cta-band{background:var(--c-brand-soft);padding:var(--sp-7) 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-6);flex-wrap:wrap;}
.cta-inner h2{font-size:24px;margin-bottom:6px;}
.cta-inner p{margin:0;font-size:var(--fs-sm);color:var(--c-text);}

/* ---------- footer ---------- */
.site-footer{background:var(--c-brand-deep);color:rgba(255,255,255,.72);padding:var(--sp-8) 0 var(--sp-5);}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:var(--sp-6);}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:var(--sp-4);}
.site-footer .brand-name{color:#fff;font-size:15px;font-weight:700;}
.site-footer .brand-sub{color:rgba(255,255,255,.56);font-size:11px;}
.site-footer p{font-size:var(--fs-sm);line-height:1.85;margin:0 0 10px;color:rgba(255,255,255,.72);}
.f-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:var(--sp-4);}
.f-links li{margin-bottom:10px;}
.f-links a{
  display:inline-block;font-size:var(--fs-sm);color:rgba(255,255,255,.72);
  transition:color .24s var(--ease),transform .24s var(--ease);
}
.f-links a:hover{color:#fff;transform:translateX(2px);}
.f-bottom{
  margin-top:var(--sp-7);padding-top:var(--sp-4);border-top:1px solid rgba(255,255,255,.16);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:var(--fs-xs);color:rgba(255,255,255,.6);
}
.f-bottom a{color:rgba(255,255,255,.72);text-decoration:underline;}
.f-bottom a:hover{color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .card-grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991px){
  .nav-list{
    position:fixed;top:0;right:0;width:84%;max-width:360px;height:100vh;
    background:#fff;box-shadow:var(--shadow-3);
    flex-direction:column;align-items:stretch;gap:0;
    padding:84px 20px 104px;margin:0;transform:translateX(105%);
    transition:transform .28s var(--ease);z-index:1002;overflow-y:auto;
  }
  body.nav-open .nav-list{transform:none;}
  body.nav-open::before{
    content:"";position:fixed;inset:0;background:rgba(11,43,75,.45);z-index:1001;
  }
  .nav-link{
    display:flex;align-items:center;height:52px;padding:0 8px;font-size:16px;
    border-bottom:1px solid var(--c-line);
  }
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--c-brand);font-weight:600;}
  .nav-toggle{display:inline-block;}
  .nav-cta{
    display:none;position:fixed;bottom:22px;right:calc(8% + 20px);
    z-index:1003;width:calc(84% - 40px);max-width:320px;height:44px;
  }
  body.nav-open .nav-cta{display:inline-flex;}
  .page-hero-grid{grid-template-columns:1fr;gap:var(--sp-5);}
  .hero-figure{aspect-ratio:16/9;}
  .faq-grid{grid-template-columns:1fr;gap:var(--sp-5);}
  .search-panel{grid-template-columns:1fr;}
  .help-card{grid-template-columns:1fr;}
  .f-grid{grid-template-columns:1fr 1fr;gap:var(--sp-5);}
  .section{padding:var(--sp-8) 0;}
}
@media (max-width:767px){
  .wrap{padding:0 var(--sp-4);}
  .section{padding:56px 0;}
  .page-hero{padding:var(--sp-6) 0;}
  .hero-figure{max-height:240px;}
  .card-grid-4{grid-template-columns:1fr;}
  .cta-inner h2{font-size:21px;}
  .nav-inner{height:60px;}
  .search-form{flex-direction:column;}
  .search-form .btn-main{width:100%;}
}
@media (max-width:575px){
  .f-grid{grid-template-columns:1fr;}
  .accordion-button{font-size:15px;padding:14px 14px;}
  .accordion-body{padding:12px 14px 16px;font-size:14px;}
}

/* roulang page: category6 */
:root{
  --c-brand:#15559C;
  --c-brand-deep:#0B2B4B;
  --c-brand-mid:#2E8FD8;
  --c-brand-soft:#E8F1FB;
  --c-accent:#F2811D;
  --c-accent-deep:#D9740F;
  --c-accent-soft:#FFF1E4;
  --c-ink:#16222E;
  --c-text:#46586A;
  --c-muted:#7D8C9B;
  --c-line:#E4ECF4;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-bg-deep:#F0F5FA;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --shadow-1:0 2px 6px rgba(15,42,70,.06);
  --shadow-2:0 8px 24px rgba(15,42,70,.08);
  --shadow-3:0 18px 40px rgba(15,42,70,.12);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:88px;
  --fs-h1:clamp(28px,4vw,44px);
  --fs-h2:clamp(22px,2.6vw,30px);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;color:var(--c-text);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-brand);text-decoration:none;text-underline-offset:3px;transition:color .24s var(--ease)}
a:hover{color:var(--c-brand-deep);text-decoration:underline}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:900;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{
  width:34px;height:34px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--c-brand),var(--c-brand-mid));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 10px rgba(21,85,156,.22);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-name{font-size:15px;font-weight:700;color:var(--c-ink);letter-spacing:-.2px}
.brand-sub{font-size:11px;color:var(--c-muted);letter-spacing:.14em}
.nav-list{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-ink);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:'';position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--c-brand);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--c-brand);text-decoration:none}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-brand);font-weight:600}
.nav-cta{margin-left:8px;flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:#fff;align-items:center;justify-content:center;flex:0 0 auto;position:relative;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);position:relative;border-radius:2px;transition:background .2s}
.nav-toggle span::before,.nav-toggle span::after{
  content:'';position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
  transition:transform .24s var(--ease),top .24s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}
body::after{
  content:'';position:fixed;inset:0;background:rgba(11,43,75,.45);
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:1000;
}
body.nav-open::after{opacity:1;pointer-events:auto}

/* ---------- buttons ---------- */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.btn-main{background:var(--c-accent);color:#fff;border:0;box-shadow:0 6px 18px rgba(242,129,29,.28)}
.btn-main:hover{background:var(--c-accent-deep);color:#fff;text-decoration:none;transform:translateY(-1px)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--c-brand);border:1.5px solid var(--c-brand)}
.btn-ghost:hover{background:var(--c-brand-soft);color:var(--c-brand);text-decoration:none}
.btn-sm{height:40px;padding:0 22px;font-size:14px}
.btn-main:focus-visible,.btn-ghost:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-brand);
}
.link-arrow i{transition:transform .24s var(--ease)}
.link-arrow:hover{text-decoration:none;color:var(--c-brand-deep)}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- page head ---------- */
.page-head{position:relative;background:var(--c-bg-alt);border-bottom:1px solid var(--c-line);overflow:hidden}
.page-head-inner{position:relative;z-index:2;padding:52px 0 56px;max-width:660px}
.page-head-bg{position:absolute;top:0;right:0;bottom:0;width:46%;z-index:1}
.page-head-bg img{width:100%;height:100%;object-fit:cover}
.page-head-bg::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,var(--c-bg-alt) 0%,rgba(245,248,252,.55) 45%,rgba(245,248,252,.12) 100%);
}
.crumb{font-size:13px;color:var(--c-muted);display:flex;align-items:center;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.crumb a{color:var(--c-muted)}
.crumb a:hover{color:var(--c-brand)}
.crumb .sep{color:#C3D1DE}
.crumb .current{color:var(--c-muted)}
.page-head h1{font-size:var(--fs-h1);line-height:1.2;font-weight:700;color:var(--c-ink);letter-spacing:-.2px}
.page-head .lead{margin-top:14px;font-size:17px;line-height:1.75;color:var(--c-text);max-width:560px}
.head-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;background:var(--c-brand-soft);color:var(--c-brand);
}
.badge-warm{background:var(--c-accent-soft);color:var(--c-accent-deep)}
.badge-grey{background:#EDF2F8;color:#5E7183}

/* ---------- generic section ---------- */
.section{padding:88px 0}
.section-alt{background:var(--c-bg-alt)}
.section-deep{background:var(--c-bg-deep)}
.section-head{max-width:720px;margin-bottom:40px}
.overline{font-size:12px;letter-spacing:.08em;color:var(--c-muted);font-weight:600;margin-bottom:10px}
.section-head h2{font-size:var(--fs-h2);line-height:1.3;font-weight:700;color:var(--c-ink)}
.section-head p{margin-top:12px;font-size:16px;line-height:1.8;color:var(--c-text)}

/* ---------- promise cards ---------- */
.promise-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.promise-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.promise-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.promise-icon{
  width:44px;height:44px;border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;
  background:var(--c-brand-soft);color:var(--c-brand);font-size:18px;margin-bottom:16px;
}
.promise-card h3{font-size:17px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.promise-card p{font-size:15px;line-height:1.8;color:var(--c-text)}

/* ---------- doc layout ---------- */
.doc-layout{display:grid;grid-template-columns:3fr 9fr;gap:40px;align-items:start}
.doc-nav{position:sticky;top:96px}
.doc-nav-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--shadow-1);
}
.doc-nav-title{
  font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--c-muted);
  padding-bottom:12px;border-bottom:1px solid var(--c-line);margin-bottom:8px;
}
.doc-nav-list a{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--c-text);padding:9px 10px;border-radius:var(--r-sm);
  transition:background .24s var(--ease),color .24s var(--ease);
}
.doc-nav-list a:hover,.doc-nav-list a.is-current{background:var(--c-brand-soft);color:var(--c-brand);text-decoration:none;font-weight:600}
.doc-nav-list a span{font-size:12px;color:var(--c-muted);font-variant-numeric:tabular-nums}
.doc-nav-list a.is-current span{color:var(--c-brand)}
.doc-help{
  margin-top:16px;background:var(--c-brand-soft);border-radius:var(--r-lg);
  padding:18px;font-size:13px;line-height:1.8;color:#2A4F76;
}
.doc-help strong{display:block;font-size:14px;color:var(--c-brand-deep);margin-bottom:6px}

/* ---------- doc body ---------- */
.doc-body{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:40px;box-shadow:var(--shadow-1);
}
.doc-meta{
  display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--c-muted);
  padding-bottom:24px;border-bottom:1px solid var(--c-line);margin-bottom:8px;
  font-variant-numeric:tabular-nums;
}
.doc-block{padding-top:32px;scroll-margin-top:96px}
.doc-block h2{
  position:relative;font-size:22px;line-height:1.4;font-weight:700;color:var(--c-ink);
  padding-left:14px;margin-bottom:14px;
}
.doc-block h2::before{
  content:'';position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-brand),var(--c-brand-mid));
}
.doc-block h2 .num{
  font-size:13px;font-weight:700;color:var(--c-accent);
  font-variant-numeric:tabular-nums;margin-right:8px;
}
.doc-block p{font-size:16px;line-height:1.9;color:var(--c-text);margin-bottom:16px}
.doc-block p:last-child{margin-bottom:0}
.doc-list{margin:0 0 16px}
.doc-list li{
  position:relative;padding-left:20px;font-size:15.5px;line-height:1.9;color:var(--c-text);
  margin-bottom:8px;
}
.doc-list li::before{
  content:'';position:absolute;left:4px;top:12px;width:6px;height:6px;border-radius:2px;
  background:var(--c-brand-mid);
}
.tip-box{
  background:var(--c-accent-soft);border-left:3px solid var(--c-accent);
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:16px 18px;font-size:15px;line-height:1.85;color:#7A4712;margin:20px 0 4px;
}
.tip-box strong{color:#8A4E0E;font-weight:600}
.quote-box{
  background:var(--c-bg-alt);border-left:3px solid var(--c-brand);
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:16px 18px;font-size:15px;line-height:1.85;color:var(--c-text);margin:20px 0;
}
.doc-figure{margin:24px 0 4px}
.doc-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-md)}
.doc-figure figcaption{font-size:13px;color:var(--c-muted);margin-top:10px}
.doc-steps{counter-reset:step;margin:8px 0 0}
.doc-steps li{
  position:relative;padding-left:38px;margin-bottom:14px;font-size:15.5px;line-height:1.85;color:var(--c-text);
  counter-increment:step;
}
.doc-steps li::before{
  content:counter(step);
  position:absolute;left:0;top:2px;width:24px;height:24px;border-radius:var(--r-sm);
  background:var(--c-brand);color:#fff;font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.doc-steps li strong{color:var(--c-ink);font-weight:600}

/* ---------- related categories ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.related-card{
  display:flex;flex-direction:column;justify-content:space-between;gap:16px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--shadow-1);min-height:150px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFE0F2;text-decoration:none}
.related-card h3{font-size:17px;font-weight:600;color:var(--c-ink);margin-bottom:6px}
.related-card p{font-size:14px;line-height:1.7;color:var(--c-muted);margin:0}
.related-card .arrow{color:var(--c-brand);font-size:14px;display:inline-flex;align-items:center;gap:6px;font-weight:600}
.related-card:hover .arrow i{transform:translateX(3px)}
.related-card .arrow i{transition:transform .24s var(--ease)}

/* ---------- cta band ---------- */
.cta-band{background:var(--c-brand-soft);padding:56px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--c-brand-deep);line-height:1.4}
.cta-inner p{margin-top:8px;font-size:15px;color:#2A4F76;line-height:1.75}

/* ---------- footer ---------- */
.site-footer{background:var(--c-brand-deep);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.f-brand .brand-name{color:#fff}
.f-brand .brand-sub{color:rgba(255,255,255,.55)}
.f-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.f-links li{margin-bottom:10px}
.f-links a{color:rgba(255,255,255,.72);font-size:14px;display:inline-block;transition:color .24s var(--ease),transform .24s var(--ease)}
.f-links a:hover{color:#fff;transform:translateX(2px);text-decoration:none}
.site-footer p{font-size:14px;line-height:1.9;margin-bottom:10px;color:rgba(255,255,255,.72)}
.site-footer p a{color:rgba(255,255,255,.8)}
.f-bottom{
  border-top:1px solid rgba(255,255,255,.14);margin-top:48px;padding:20px 0 24px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.f-bottom a{color:rgba(255,255,255,.75)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .nav-list{gap:18px}
  .nav-link{font-size:14px}
}
@media (max-width:991px){
  .wrap{padding:0 16px}
  .nav-inner{height:60px;gap:12px}
  .nav-list{
    position:fixed;top:0;right:0;width:84%;max-width:360px;height:100vh;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:84px 24px 104px;margin:0;
    transform:translateX(105%);transition:transform .28s var(--ease);
    box-shadow:var(--shadow-3);z-index:1001;overflow-y:auto;margin-left:0;
  }
  body.nav-open .nav-list{transform:translateX(0)}
  .nav-link{
    height:52px;display:flex;align-items:center;font-size:16px;
    border-bottom:1px solid var(--c-line);padding:0;
  }
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--c-brand)}
  .nav-toggle{display:flex;margin-left:auto;position:relative;z-index:1002}
  .nav-cta{
    position:fixed;right:24px;bottom:20px;width:calc(84% - 48px);max-width:312px;
    z-index:1002;height:44px;
    opacity:0;pointer-events:none;transform:translateX(24px);
    transition:opacity .24s var(--ease),transform .24s var(--ease);
  }
  body.nav-open .nav-cta{opacity:1;pointer-events:auto;transform:none}
  .section{padding:64px 0}
  .page-head-inner{padding:40px 0 44px;max-width:100%}
  .page-head-bg{width:100%;opacity:.16}
  .page-head-bg::after{background:linear-gradient(0deg,var(--c-bg-alt) 30%,rgba(245,248,252,.6) 100%)}
  .doc-layout{grid-template-columns:1fr;gap:24px}
  .doc-nav{position:static}
  .doc-nav-card{padding:16px}
  .doc-nav-list{display:grid;grid-template-columns:1fr 1fr;gap:4px}
  .doc-body{padding:26px}
  .promise-grid{grid-template-columns:1fr 1fr}
  .related-grid{grid-template-columns:1fr 1fr}
  .f-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .promise-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .doc-nav-list{grid-template-columns:1fr}
  .doc-body{padding:22px 18px}
  .doc-block h2{font-size:19px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .f-grid{grid-template-columns:1fr;gap:28px}
  .f-bottom{flex-direction:column}
  .btn-main,.btn-ghost{width:100%;max-width:320px}
}
@media (max-width:479px){
  .page-head h1{font-size:26px}
  .brand-name{font-size:14px}
  .brand-sub{font-size:10px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}