/* roulang page: index */
:root{
  --c-primary:#1A56D6;
  --c-primary-dark:#123C8F;
  --c-primary-soft:#E8F0FE;
  --c-teal:#0FA9A0;
  --c-accent:#FF7A1A;
  --c-bg:#F5F8FD;
  --c-card:#FFFFFF;
  --c-text:#101A2B;
  --c-text-2:#5A6A82;
  --c-text-3:#8896AB;
  --c-border:#E2E9F4;
  --c-border-soft:#EEF3FA;
  --c-hover-border:#CFE0FA;
  --r-8:8px;--r-12:12px;--r-16:16px;--r-20:20px;--r-full:999px;
  --sh-1:0 1px 2px rgba(16,26,43,.06);
  --sh-2:0 10px 24px rgba(26,86,214,.12);
  --sh-3:0 16px 40px rgba(16,26,43,.10);
  --sp-section:96px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  font-family:var(--font-cn);
  font-size:16px;line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .16s ease,transform .16s ease;}
a:hover{color:var(--c-primary-dark);}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--c-text);font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}

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

/* ============ 导航 ============ */
.nav-shell{
  position:sticky;top:0;z-index:1030;
  padding:14px 0 10px;
  background:linear-gradient(180deg,rgba(245,248,253,.96) 60%,rgba(245,248,253,0));
  transition:padding .2s ease;
}
.nav-card{
  background:var(--c-card);
  border:1px solid var(--c-border);
  border-radius:var(--r-16);
  box-shadow:var(--sh-1);
  padding:10px 14px;
  display:flex;align-items:center;gap:14px;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.nav-shell.is-scrolled .nav-card{box-shadow:var(--sh-3);border-color:var(--c-hover-border);}
.nav-brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-text);}
.nav-brand:hover{color:var(--c-primary);}
.nav-brand .logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-teal));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;box-shadow:var(--sh-1);
}
.nav-brand .logo-text{display:flex;flex-direction:column;line-height:1.15;}
.nav-brand .logo-text b{font-size:15px;font-weight:700;letter-spacing:-.01em;}
.nav-brand .logo-text span{font-size:11px;color:var(--c-text-3);letter-spacing:.06em;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:6px;flex:1 1 auto;flex-wrap:wrap;}
.nav-item{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 13px;border-radius:10px;
  font-size:14px;color:var(--c-text-2);font-weight:500;
  border-bottom:2px solid transparent;
  transition:background .16s ease,color .16s ease,border-color .16s ease;
  white-space:nowrap;
}
.nav-item i{font-size:15px;color:var(--c-text-3);transition:color .16s ease;}
.nav-item:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);}
.nav-item:hover i{color:var(--c-primary);}
.nav-item.active{background:var(--c-primary-soft);color:var(--c-primary-dark);border-bottom-color:var(--c-primary);font-weight:600;}
.nav-item.active i{color:var(--c-primary);}
.nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn-nav{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:10px;
  background:var(--c-accent);color:#fff;font-size:14px;font-weight:600;
  border:none;box-shadow:var(--sh-1);
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease;
  min-height:44px;
}
.btn-nav:hover{background:#EB6A0C;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-nav:active{transform:translateY(0);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--c-border);background:#fff;color:var(--c-text-2);
  align-items:center;justify-content:center;font-size:17px;
}
.nav-mobile{display:none;padding-top:10px;}
.nav-mobile .mobile-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:10px;
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--r-16);box-shadow:var(--sh-3);padding:14px;
}
.nav-mobile .mobile-grid a{
  display:flex;align-items:center;gap:9px;
  padding:12px;border-radius:10px;background:#F8FAFE;
  color:var(--c-text-2);font-size:14px;font-weight:500;
}
.nav-mobile .mobile-grid a i{color:var(--c-primary);font-size:16px;}
.nav-mobile .mobile-grid a.active{background:var(--c-primary-soft);color:var(--c-primary-dark);font-weight:600;}
@media (max-width:991.98px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-mobile.open{display:block;}
  .nav-right .btn-nav{display:none;}
}

/* ============ 按钮 ============ */
.btn-main,.btn-second,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 26px;border-radius:12px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;min-height:48px;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease,color .16s ease;
}
.btn-main{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
.btn-main:hover{background:#EB6A0C;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-main:active{transform:translateY(0);}
.btn-second{background:#fff;color:var(--c-primary-dark);border-color:var(--c-border);}
.btn-second:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-hover-border);}
.btn-ghost{background:transparent;color:var(--c-text-2);border-color:var(--c-border);}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);}
.btn-sm{padding:10px 18px;font-size:14px;min-height:44px;border-radius:10px;}

/* ============ 通用板块 ============ */
.section{padding:var(--sp-section) 0;}
.section-tight{padding:72px 0;}
.section-alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--c-teal);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--c-teal);}
.section-head h2{font-size:30px;line-height:1.3;margin-bottom:14px;}
.section-head p{color:var(--c-text-2);font-size:16px;max-width:43em;}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:var(--r-full);
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  font-size:12px;font-weight:600;
}
.badge-teal{background:rgba(15,169,160,.12);color:#0B817A;}
.divider{height:1px;background:var(--c-border-soft);border:0;margin:0;}

/* ============ Hero ============ */
.hero{padding:56px 0 72px;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:48px;align-items:center;}
.hero-copy h1{font-size:40px;line-height:1.25;margin-bottom:20px;}
.hero-copy .hero-sub{font-size:17px;color:var(--c-text-2);line-height:1.8;max-width:34em;margin-bottom:28px;}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 13px;border-radius:var(--r-full);
  background:#fff;border:1px solid var(--c-border);
  font-size:13px;color:var(--c-text-2);
}
.tag-pill i{color:var(--c-teal);font-size:13px;}
.hero-media{position:relative;border-radius:var(--r-20);overflow:hidden;box-shadow:var(--sh-3);}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;background:#E9EFF9;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(150deg,rgba(255,255,255,.34),rgba(232,240,254,.12));
  pointer-events:none;
}
.hero-media .media-badge{
  position:absolute;top:16px;left:16px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.94);backdrop-filter:blur(4px);
  border-radius:var(--r-full);padding:8px 15px;
  font-size:12px;font-weight:600;color:var(--c-primary-dark);box-shadow:var(--sh-1);
}
.hero-media .media-badge i{color:var(--c-accent);}
.hero-media .media-platforms{
  position:absolute;bottom:16px;left:16px;right:16px;z-index:2;
  display:flex;flex-wrap:wrap;gap:8px;
}
.hero-media .media-platforms span{
  background:rgba(255,255,255,.92);border-radius:var(--r-full);
  padding:6px 12px;font-size:12px;color:var(--c-text-2);font-weight:500;
  display:inline-flex;align-items:center;gap:6px;
}
.hero-media .media-platforms i{color:var(--c-primary);}
.stat-bar{
  margin-top:44px;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-16);box-shadow:var(--sh-1);
  display:grid;grid-template-columns:repeat(4,1fr);
  overflow:hidden;
}
.stat-item{padding:22px 20px;border-right:1px solid var(--c-border-soft);}
.stat-item:last-child{border-right:0;}
.stat-item .stat-label{font-size:13px;color:var(--c-text-3);margin-bottom:6px;}
.stat-item .stat-value{font-family:var(--font-mono);font-size:19px;font-weight:600;color:var(--c-primary-dark);}
.stat-item .stat-value small{font-size:12px;color:var(--c-text-3);font-family:var(--font-cn);margin-left:2px;}
@media (max-width:991.98px){
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-copy h1{font-size:32px;}
  .stat-bar{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--c-border-soft);}
}

/* ============ 轮播 ============ */
.shot-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.shot-nav{display:flex;gap:10px;}
.shot-nav button{
  width:44px;height:44px;border-radius:var(--r-full);
  border:1px solid var(--c-border);background:#fff;color:var(--c-text-2);
  display:inline-flex;align-items:center;justify-content:center;
  transition:all .16s ease;
}
.shot-nav button:hover{border-color:var(--c-primary);color:var(--c-primary);box-shadow:var(--sh-1);}
.shot-viewport{overflow:hidden;padding-bottom:6px;}
.shot-track{display:flex;gap:24px;transition:transform .42s cubic-bezier(.4,0,.2,1);}
.shot-card{
  flex:0 0 calc((100% - 48px)/3);
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-16);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.shot-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-hover-border);}
.shot-card .shot-img{aspect-ratio:16/9;overflow:hidden;background:#E9EFF9;}
.shot-card .shot-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.shot-card:hover .shot-img img{transform:scale(1.03);}
.shot-card .shot-body{padding:20px 22px 24px;}
.shot-card .shot-body span{font-size:12px;font-weight:600;color:var(--c-teal);font-family:var(--font-mono);}
.shot-card .shot-body h3{font-size:18px;margin:8px 0 8px;}
.shot-card .shot-body p{font-size:14px;color:var(--c-text-2);line-height:1.7;}
.shot-dots{display:flex;gap:8px;justify-content:center;margin-top:28px;}
.shot-dots button{
  width:10px;height:10px;border-radius:var(--r-full);border:0;padding:0;
  background:#CFDCEE;transition:all .2s ease;
}
.shot-dots button.active{width:26px;background:var(--c-primary);}
.shot-dots button:hover{background:var(--c-primary);}
@media (max-width:991.98px){
  .shot-card{flex:0 0 calc((100% - 24px)/2);}
}
@media (max-width:767.98px){
  .shot-viewport{overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;}
  .shot-track{transform:none !important;gap:16px;}
  .shot-card{flex:0 0 84%;scroll-snap-align:start;}
  .shot-nav{display:none;}
}

/* ============ 资讯 CMS ============ */
.news-layout{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:24px;}
.news-feature{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-16);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-hover-border);}
.news-feature .nf-img{aspect-ratio:16/9;overflow:hidden;background:#E9EFF9;}
.news-feature .nf-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.news-feature:hover .nf-img img{transform:scale(1.03);}
.news-feature .nf-body{padding:24px 26px 28px;display:flex;flex-direction:column;flex:1;}
.news-feature h3{font-size:21px;line-height:1.45;margin:12px 0 12px;}
.news-feature h3 a{color:var(--c-text);}
.news-feature h3 a:hover{color:var(--c-primary);}
.news-feature p{font-size:14px;color:var(--c-text-2);line-height:1.75;margin-bottom:18px;}
.news-side{display:flex;flex-direction:column;gap:16px;}
.news-mini{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-12);
  box-shadow:var(--sh-1);padding:18px 20px;flex:1;
  display:flex;gap:16px;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.news-mini:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-hover-border);}
.news-mini .mini-thumb{width:96px;flex:0 0 96px;aspect-ratio:16/11;border-radius:10px;overflow:hidden;background:#E9EFF9;}
.news-mini .mini-thumb img{width:100%;height:100%;object-fit:cover;}
.news-mini h3{font-size:16px;line-height:1.5;margin:6px 0 8px;}
.news-mini h3 a{color:var(--c-text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-mini h3 a:hover{color:var(--c-primary);}
.meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--c-text-3);}
.meta-row time{font-family:var(--font-mono);}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--c-primary);margin-top:auto;}
.link-more:hover{gap:10px;color:var(--c-primary-dark);}
.news-empty{
  background:#fff;border:1px dashed var(--c-border);border-radius:var(--r-16);
  padding:52px 24px;text-align:center;
}
.news-empty i{font-size:32px;color:#C6D3E6;display:block;margin-bottom:14px;}
.news-empty p{color:var(--c-text-3);font-size:14px;margin-bottom:18px;}
@media (max-width:991.98px){
  .news-layout{grid-template-columns:1fr;}
}

/* ============ 系统要求 ============ */
.spec-wrap{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-16);box-shadow:var(--sh-1);overflow:hidden;}
.spec-cols{display:grid;grid-template-columns:1fr 1fr;}
.spec-col{padding:8px 0;}
.spec-col + .spec-col{border-left:1px solid var(--c-border-soft);}
.spec-col h3{font-size:15px;padding:18px 26px 10px;color:var(--c-primary-dark);display:flex;align-items:center;gap:9px;}
.spec-col h3 i{color:var(--c-teal);}
.spec-row{display:flex;justify-content:space-between;gap:18px;padding:13px 26px;font-size:14px;}
.spec-row:nth-child(odd){background:#FAFCFF;}
.spec-row dt{color:var(--c-text-2);}
.spec-row dd{margin:0;font-family:var(--font-mono);color:var(--c-text);font-size:13.5px;text-align:right;}
@media (max-width:767.98px){
  .spec-cols{grid-template-columns:1fr;}
  .spec-col + .spec-col{border-left:0;border-top:1px solid var(--c-border-soft);}
}

/* ============ 评价墙 ============ */
.review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.review-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-16);
  box-shadow:var(--sh-1);padding:24px;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-hover-border);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.avatar{
  width:44px;height:44px;border-radius:var(--r-full);flex:0 0 44px;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:16px;
  background:linear-gradient(135deg,var(--c-primary),#4A82F0);
}
.avatar.t2{background:linear-gradient(135deg,var(--c-teal),#4CD0C7);}
.avatar.t3{background:linear-gradient(135deg,#7A6BF0,#A79BFF);}
.review-top .who b{display:block;font-size:15px;}
.review-top .who span{font-size:12px;color:var(--c-text-3);}
.stars{color:var(--c-accent);font-size:13px;letter-spacing:2px;margin-bottom:10px;}
.review-card p{font-size:14px;color:var(--c-text-2);line-height:1.75;}
@media (max-width:991.98px){.review-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:575.98px){.review-grid{grid-template-columns:1fr;}}

/* ============ 下载 ============ */
.dl-panel{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-20);
  box-shadow:var(--sh-1);padding:36px;
}
.dl-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.dl-btn{
  display:flex;flex-direction:column;gap:6px;
  border:1px solid var(--c-border);border-radius:var(--r-12);
  background:#FBFDFF;padding:20px;min-height:112px;
  color:var(--c-text);transition:all .16s ease;
}
.dl-btn:hover{border-color:var(--c-primary);background:var(--c-primary-soft);transform:translateY(-3px);box-shadow:var(--sh-2);color:var(--c-text);}
.dl-btn .dl-name{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;}
.dl-btn .dl-name i{color:var(--c-primary);font-size:19px;}
.dl-btn .dl-meta{font-family:var(--font-mono);font-size:12.5px;color:var(--c-text-3);}
.dl-foot{margin-top:24px;padding-top:20px;border-top:1px solid var(--c-border-soft);display:flex;flex-wrap:wrap;gap:14px 26px;align-items:center;font-size:13px;color:var(--c-text-2);}
.dl-foot .checksum{font-family:var(--font-mono);color:var(--c-text-3);font-size:12.5px;word-break:break-all;}
@media (max-width:991.98px){.dl-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:575.98px){.dl-grid{grid-template-columns:1fr;}.dl-panel{padding:24px;}}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-12);box-shadow:var(--sh-1);overflow:hidden;transition:border-color .16s ease,box-shadow .16s ease;}
.faq-item.open{background:#F7FAFF;border-color:var(--c-hover-border);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;font-size:16px;font-weight:600;color:var(--c-text);cursor:pointer;
  min-height:56px;
}
.faq-item.open .faq-q{color:var(--c-primary);}
.faq-q .ico{
  flex:0 0 26px;width:26px;height:26px;border-radius:var(--r-full);
  background:var(--c-primary-soft);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;transition:transform .22s ease,background .22s ease;
}
.faq-item.open .faq-q .ico{transform:rotate(45deg);background:var(--c-primary);color:#fff;}
.faq-a{display:none;padding:0 22px 22px;}
.faq-item.open .faq-a{display:block;}
.faq-a p{font-size:14.5px;color:var(--c-text-2);line-height:1.8;}

/* ============ 页脚 ============ */
.site-footer{background:#0F1B2D;color:#B7C4D6;padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px;}
.footer-brand .logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-teal));
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:16px;
}
.footer-brand b{color:#fff;font-size:16px;letter-spacing:-.01em;}
.site-footer p{font-size:14px;line-height:1.85;color:#93A3B8;}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:#93A3B8;font-size:14px;display:inline-flex;align-items:center;gap:8px;transition:color .16s ease,transform .16s ease;}
.footer-links a:hover{color:#6FA0FF;transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;font-size:13px;color:#7A8AA0;
}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom a{color:#7A8AA0;}
.footer-bottom a:hover{color:#6FA0FF;}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand-wrap{grid-column:1 / -1;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding-top:52px;}
}

/* 移动端通用 */
@media (max-width:767.98px){
  :root{--sp-section:56px;}
  .container-x{padding:0 20px;}
  .section-tight{padding:56px 0;}
  .hero{padding:36px 0 48px;}
  .hero-copy h1{font-size:28px;}
  .hero-copy .hero-sub{font-size:15.5px;}
  .section-head h2{font-size:22px;}
  .hero-cta .btn-main,.hero-cta .btn-second{width:100%;}
  .stat-item{padding:18px 16px;}
  .stat-item .stat-value{font-size:16px;}
  .dl-panel{padding:22px;}
}
@media (max-width:575.98px){
  .news-mini{flex-direction:column;}
  .news-mini .mini-thumb{width:100%;flex:0 0 auto;}
}

/* roulang page: article */
:root{
  --primary:#1A56D6;
  --primary-dark:#123C8F;
  --primary-light:#E8F0FE;
  --accent:#0FA9A0;
  --cta:#FF7A1A;
  --cta-dark:#E96A0C;
  --bg:#F5F8FD;
  --card:#FFFFFF;
  --text:#101A2B;
  --text-2:#5A6A82;
  --text-3:#8896AB;
  --border:#E2E9F4;
  --border-hover:#CFE0FA;
  --divider:#EEF3FA;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,26,43,.06);
  --sh-2:0 10px 24px rgba(26,86,214,.12);
  --sh-3:0 16px 40px rgba(16,26,43,.10);
  --sec-py:96px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-md);}
a{color:var(--primary);text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--primary-dark);}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.28;color:var(--text);}
p{margin:0 0 16px;}
ul,ol{margin:0 0 16px;padding-left:22px;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  padding:14px 0;
  background:rgba(245,248,253,.94);
  backdrop-filter:blur(8px);
  transition:box-shadow .2s ease,padding .2s ease;
}
.site-header.scrolled{padding:10px 0;}
.nav-panel{
  display:flex;align-items:center;gap:18px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:12px 16px;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.scrolled .nav-panel{box-shadow:var(--sh-2);border-color:var(--border-hover);}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.logo-mark{
  width:42px;height:42px;flex:none;
  display:grid;place-items:center;
  border-radius:var(--r-md);
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;font-size:18px;box-shadow:0 6px 14px rgba(26,86,214,.24);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text b{font-size:16px;font-weight:700;color:var(--text);letter-spacing:-.01em;}
.brand-text small{font-size:12px;color:var(--text-3);margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-item{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;color:var(--text-2);
  padding:10px 13px;border-radius:10px;
  border-bottom:2px solid transparent;
  white-space:nowrap;transition:all .16s ease;
}
.nav-item i{font-size:14px;color:var(--text-3);transition:color .16s ease;}
.nav-item:hover{background:var(--primary-light);color:var(--primary);}
.nav-item:hover i{color:var(--primary);}
.nav-item.active{background:var(--primary-light);color:var(--primary);border-bottom-color:var(--primary);}
.nav-item.active i{color:var(--primary);}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-md);
  background:var(--primary-light);border:1px solid var(--border);
  color:var(--primary);font-size:17px;cursor:pointer;
}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 22px;
  font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--r-md);border:1px solid transparent;
  cursor:pointer;transition:all .16s ease;text-decoration:none;
}
.btn-primary-x{background:var(--cta);color:#fff;box-shadow:0 6px 16px rgba(255,122,26,.26);}
.btn-primary-x:hover{background:var(--cta-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(255,122,26,.30);}
.btn-primary-x:active{transform:translateY(0);}
.btn-outline-x{background:#fff;color:var(--primary);border-color:var(--border);}
.btn-outline-x:hover{background:var(--primary-light);border-color:var(--border-hover);color:var(--primary);}
.btn-ghost-x{background:transparent;border-color:var(--border);color:var(--text-2);}
.btn-ghost-x:hover{border-color:var(--primary);color:var(--primary);background:#fff;}
.btn-mini{min-height:40px;padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:26px 0 4px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb i{font-size:10px;color:var(--text-3);}
.crumb .cur{color:var(--text-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:32px;align-items:start;
  padding:22px 0 96px;
}
.article-main{max-width:820px;min-width:0;}
.article-head{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-xl);box-shadow:var(--sh-1);
  padding:32px 34px 26px;
}
.chip-cat{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;color:var(--accent);
  background:rgba(15,169,160,.10);
  border:1px solid rgba(15,169,160,.22);
  padding:5px 12px;border-radius:var(--r-pill);
}
.article-head h1{font-size:32px;margin:16px 0 18px;line-height:1.34;}
.meta-row{
  display:flex;flex-wrap:wrap;gap:20px;
  font-size:13px;color:var(--text-3);
  padding-top:18px;border-top:1px solid var(--divider);
}
.meta-row span{display:inline-flex;align-items:center;gap:7px;}
.meta-row i{color:var(--text-3);font-size:13px;}
.meta-row .num{font-family:var(--mono);}

.article-body{
  background:var(--card);border:1px solid var(--border);border-top:none;
  border-radius:0 0 var(--r-xl) var(--r-xl);
  box-shadow:var(--sh-1);
  padding:30px 34px 36px;
  font-size:16px;line-height:1.85;color:var(--text);
  overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:22px;margin:36px 0 14px;padding-left:14px;
  border-left:4px solid var(--primary);line-height:1.4;
}
.article-body h3{font-size:18px;margin:26px 0 10px;color:var(--primary-dark);}
.article-body h4{font-size:16px;margin:20px 0 8px;color:var(--text);}
.article-body p{margin:0 0 16px;color:#243149;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;color:#243149;}
.article-body li{margin-bottom:8px;}
.article-body li::marker{color:var(--primary);}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(26,86,214,.28);}
.article-body a:hover{border-bottom-color:var(--primary);}
.article-body strong{color:var(--text);font-weight:700;}
.article-body img{border-radius:var(--r-md);margin:18px 0;border:1px solid var(--border);}
.article-body blockquote{
  margin:20px 0;padding:16px 20px;
  background:#F7FAFF;border-left:4px solid var(--accent);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-2);font-size:15px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:18px 0;font-size:14px;
  border:1px solid var(--border);border-radius:var(--r-md);overflow:hidden;
}
.article-body th{
  background:var(--primary-light);color:var(--primary-dark);
  font-weight:600;text-align:left;padding:11px 14px;
}
.article-body td{padding:11px 14px;border-top:1px solid var(--divider);color:var(--text-2);}
.article-body tr:nth-child(even) td{background:#FAFCFF;}
.article-body pre{
  background:#0F1B2D;color:#DCE6F5;font-family:var(--mono);
  font-size:13px;line-height:1.7;padding:18px 20px;border-radius:var(--r-md);
  overflow-x:auto;margin:18px 0;
}
.article-body code{
  font-family:var(--mono);font-size:13px;
  background:var(--primary-light);color:var(--primary-dark);
  padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:none;color:inherit;padding:0;}
.article-body hr{border:none;border-top:1px solid var(--divider);margin:28px 0;}

.empty-box{
  background:var(--card);border:1px dashed var(--border);
  border-radius:var(--r-xl);box-shadow:var(--sh-1);
  padding:56px 32px;text-align:center;margin-top:22px;
}
.empty-box i{font-size:38px;color:var(--text-3);}
.empty-box h2{font-size:20px;margin:16px 0 8px;}
.empty-box p{color:var(--text-2);font-size:14px;margin-bottom:20px;}

/* ---------- 标签 / 文末导航 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--text-2);
  background:#fff;border:1px solid var(--border);
  padding:7px 14px;border-radius:var(--r-pill);
  transition:all .16s ease;
}
.tag:hover{border-color:var(--border-hover);color:var(--primary);background:var(--primary-light);}
.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:22px;
}
.post-nav a{
  display:flex;flex-direction:column;gap:6px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  padding:16px 18px;box-shadow:var(--sh-1);transition:all .16s ease;
}
.post-nav a:hover{transform:translateY(-4px);border-color:var(--border-hover);box-shadow:var(--sh-2);}
.post-nav .pn-label{font-size:12px;color:var(--text-3);}
.post-nav .pn-title{font-size:15px;font-weight:600;color:var(--text);}
.post-nav a:hover .pn-title{color:var(--primary);}
.back-bar{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}

/* ---------- 侧栏 ---------- */
.article-side{min-width:0;}
.side-sticky{position:sticky;top:104px;display:flex;flex-direction:column;gap:18px;}
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:20px;
}
.side-title{
  font-size:14px;font-weight:700;color:var(--primary-dark);
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.side-title i{color:var(--accent);}
.toc-list{list-style:none;margin:0;padding:0;font-size:14px;}
.toc-list li{margin-bottom:9px;}
.toc-list a{color:var(--text-2);display:block;padding-left:12px;border-left:2px solid var(--divider);line-height:1.5;}
.toc-list a:hover{color:var(--primary);border-left-color:var(--primary);}
.toc-list .toc-h3 a{padding-left:24px;font-size:13px;color:var(--text-3);}
.side-links{list-style:none;margin:0;padding:0;font-size:14px;}
.side-links li{margin-bottom:10px;}
.side-links a{display:flex;align-items:center;gap:8px;color:var(--text-2);}
.side-links a i{color:var(--accent);font-size:12px;}
.side-links a:hover{color:var(--primary);}
.side-cta{background:#F7FAFF;border-color:var(--border-hover);}
.side-cta p{font-size:13px;color:var(--text-2);margin:0 0 14px;}
.side-cta .ver{
  font-family:var(--mono);font-size:12px;color:var(--primary);
  background:var(--primary-light);border-radius:var(--r-sm);
  padding:4px 10px;display:inline-block;margin-bottom:12px;
}

/* ---------- 相关推荐 ---------- */
.related-sec{padding:0 0 96px;}
.sec-head{margin-bottom:26px;}
.sec-head h2{font-size:26px;}
.sec-head p{color:var(--text-2);font-size:14px;margin:8px 0 0;}
.related-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;}
.rel-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;transition:all .16s ease;
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--border-hover);box-shadow:var(--sh-2);}
.rel-main{grid-row:span 2;}
.rel-thumb{position:relative;background:#EDF2FA;overflow:hidden;}
.rel-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.03);}
.rel-main .rel-thumb{aspect-ratio:16/9;}
.rel-sub{flex-direction:row;align-items:stretch;}
.rel-sub .rel-thumb{width:136px;flex:none;aspect-ratio:4/3;}
.rel-body{padding:20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:18px;line-height:1.45;}
.rel-sub .rel-body h3{font-size:15px;}
.rel-body p{font-size:14px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.rel-sub .rel-body p{-webkit-line-clamp:2;font-size:13px;}
.rel-foot{display:flex;align-items:center;gap:12px;margin-top:auto;font-size:13px;color:var(--text-3);}
.rel-foot time{font-family:var(--mono);font-size:12px;}
.more-link{margin-left:auto;color:var(--primary);font-weight:600;font-size:13px;display:inline-flex;align-items:center;gap:5px;}
.rel-card:hover .more-link{gap:9px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1B2D;color:#B9C6DA;padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .logo-mark{background:linear-gradient(135deg,#2A6BF0,#123C8F);box-shadow:none;}
.footer-brand b{color:#fff;font-size:16px;}
.footer-brand-wrap p{font-size:14px;line-height:1.8;color:#93A3BC;margin:0;}
.footer-title{font-size:14px;font-weight:700;color:#7FB0FF;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:#B9C6DA;transition:all .16s ease;
}
.footer-links a i{font-size:11px;color:#4E80E0;}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.footer-grid p{font-size:14px;color:#93A3BC;line-height:1.8;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13px;color:#8697B1;
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px;}
.fb-links a{color:#8697B1;}
.fb-links a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (min-width:1400px){
  .container-x{max-width:1280px;}
}
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 288px;gap:26px;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .rel-main{grid-row:auto;grid-column:span 2;}
}
@media (max-width:991px){
  :root{--sec-py:72px;}
  .article-layout{grid-template-columns:1fr;padding-bottom:72px;}
  .article-side{order:2;}
  .side-sticky{position:static;}
  .article-main{max-width:none;}
  .article-head{padding:26px 24px 22px;border-radius:var(--r-lg);}
  .article-head h1{font-size:27px;}
  .article-body{padding:24px 24px 30px;border-radius:0 0 var(--r-lg) var(--r-lg);}
  .related-sec{padding-bottom:72px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-links{
    display:none;margin-left:0;order:3;width:100%;
    grid-template-columns:1fr 1fr;gap:8px;padding-top:12px;
  }
  .nav-panel{flex-wrap:wrap;}
  .nav-panel.open .nav-links{display:grid;}
  .nav-item{padding:12px 12px;min-height:44px;}
  .nav-actions{margin-left:auto;}
  .related-grid{grid-template-columns:1fr;}
  .rel-main{grid-column:auto;}
}
@media (max-width:767px){
  .related-grid{grid-template-columns:1fr;}
  .rel-sub{flex-direction:column;}
  .rel-sub .rel-thumb{width:100%;aspect-ratio:16/9;}
  .post-nav{grid-template-columns:1fr;}
  .brand-text small{display:none;}
}
@media (max-width:575px){
  :root{--sec-py:56px;}
  .container-x{padding:0 20px;}
  .article-head h1{font-size:23px;}
  .article-body{font-size:15px;}
  .article-body h2{font-size:19px;}
  .article-body table{display:block;overflow-x:auto;}
  .btn-x{width:100%;}
  .nav-actions .btn-x{width:auto;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .meta-row{gap:14px;}
  .crumb .cur{max-width:200px;}
}

/* roulang page: category1 */
:root{
  --pri:#1A56D6;
  --pri-d:#123C8F;
  --pri-l:#E8F0FE;
  --acc:#0FA9A0;
  --cta:#FF7A1A;
  --bg:#F5F8FD;
  --card:#FFFFFF;
  --ink:#101A2B;
  --ink2:#5A6A82;
  --ink3:#8896AB;
  --bd:#E2E9F4;
  --sep:#EEF3FA;
  --r8:8px;
  --r12:12px;
  --r16:16px;
  --r20:20px;
  --rpill:999px;
  --sh1:0 1px 2px rgba(16,26,43,.06);
  --sh2:0 10px 24px rgba(26,86,214,.12);
  --sh3:0 16px 40px rgba(16,26,43,.10);
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .16s ease,background-color .16s ease,border-color .16s ease,transform .16s ease;}
button,input{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--pri);outline-offset:2px;border-radius:6px;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 22px;
  border-radius:var(--rpill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:0;
  cursor:pointer;
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,border-color .16s ease,color .16s ease;
}
.btn i{font-size:14px;}
.btn-cta{
  background:var(--cta);
  color:#fff;
  box-shadow:0 6px 16px rgba(255,122,26,.28);
}
.btn-cta:hover{background:#ED6C0C;color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,122,26,.34);}
.btn-cta:active{transform:translateY(0);box-shadow:0 4px 12px rgba(255,122,26,.24);}
.btn-primary-x{
  background:var(--pri);
  color:#fff;
  box-shadow:0 6px 16px rgba(26,86,214,.22);
}
.btn-primary-x:hover{background:#164AC0;color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(26,86,214,.28);}
.btn-primary-x:active{transform:translateY(0);}
.btn-line{
  background:#fff;
  color:var(--ink);
  border-color:var(--bd);
  box-shadow:var(--sh1);
}
.btn-line:hover{border-color:var(--pri);color:var(--pri);transform:translateY(-2px);}
.btn-ghost{
  background:rgba(255,255,255,.7);
  color:var(--pri-d);
  border-color:#CBDBF7;
}
.btn-ghost:hover{background:var(--pri-l);border-color:var(--pri);color:var(--pri);}
.btn-sm{min-height:42px;padding:0 18px;font-size:14px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(245,248,253,.9);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  padding:0 0 6px;
}
.nav-panel{
  display:flex;
  align-items:center;
  gap:16px;
  background:var(--card);
  border:1px solid var(--bd);
  border-radius:var(--r16);
  box-shadow:var(--sh1);
  padding:10px 14px;
  margin-top:14px;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.site-header.is-stuck .nav-panel{
  box-shadow:var(--sh2);
  border-color:#CFE0FA;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  padding:4px 6px;
  border-radius:var(--r12);
}
.brand:hover{background:var(--pri-l);}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:10px;
  background:linear-gradient(140deg,var(--pri) 0%,#2F79E8 100%);
  color:#fff;
  font-size:16px;
  box-shadow:0 4px 10px rgba(26,86,214,.24);
}
.brand-text{
  font-size:16px;
  font-weight:700;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.brand-text em{
  display:block;
  font-style:normal;
  font-size:11px;
  font-weight:500;
  color:var(--ink3);
  letter-spacing:.06em;
  line-height:1.4;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1 1 auto;
  min-width:0;
}
.nav-item{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:9px 13px;
  border-radius:10px;
  font-size:14px;
  font-weight:500;
  color:var(--ink2);
  white-space:nowrap;
  border-bottom:2px solid transparent;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.nav-item i{font-size:15px;color:var(--ink3);transition:color .16s ease;}
.nav-item:hover{background:var(--pri-l);color:var(--pri-d);}
.nav-item:hover i{color:var(--pri);}
.nav-item.active{
  background:var(--pri-l);
  color:var(--pri-d);
  font-weight:600;
  border-bottom-color:var(--pri);
}
.nav-item.active i{color:var(--pri);}
.nav-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--bd);
  background:#fff;
  color:var(--pri-d);
  font-size:17px;
  cursor:pointer;
}
.nav-toggle:hover{background:var(--pri-l);border-color:#CFE0FA;}
.nav-mobile{
  display:none;
  background:var(--card);
  border:1px solid var(--bd);
  border-radius:var(--r16);
  box-shadow:var(--sh2);
  padding:12px;
  margin-top:10px;
}
.nav-mobile.open{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;}
.nav-mobile .nav-item{
  justify-content:flex-start;
  padding:12px;
  border-bottom:none;
  border:1px solid var(--sep);
  border-radius:12px;
  font-size:13.5px;
}
.nav-mobile .nav-item.active{border-color:#CFE0FA;}

/* ---------- 面包屑 ---------- */
.breadcrumb-x{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13.5px;
  color:var(--ink3);
  margin-bottom:18px;
}
.breadcrumb-x a{color:var(--ink2);}
.breadcrumb-x a:hover{color:var(--pri);}
.breadcrumb-x i{font-size:10px;color:#B7C4D6;}
.breadcrumb-x span{color:var(--ink3);}

/* ---------- 页面头图 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-radius:0 0 var(--r20) var(--r20);
  background:#E9F0FB;
}
.page-hero .hero-bg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
}
.page-hero .hero-veil{
  position:absolute;
  inset:0;
  background:linear-gradient(105deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.9) 48%,rgba(245,248,253,.62) 100%);
}
.page-hero .hero-inner{
  position:relative;
  z-index:2;
  padding-top:44px;
  padding-bottom:52px;
  max-width:840px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--rpill);
  background:var(--pri-l);
  color:var(--pri-d);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
  margin-bottom:16px;
}
.eyebrow i{font-size:12px;color:var(--acc);}
.page-hero h1{
  font-size:40px;
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.01em;
  margin-bottom:16px;
}
.page-hero h1 b{color:var(--pri);font-weight:700;}
.hero-sub{
  font-size:17px;
  line-height:1.8;
  color:var(--ink2);
  max-width:660px;
  margin-bottom:26px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:14px;
  margin-top:34px;
  max-width:760px;
}
.stat{
  background:rgba(255,255,255,.86);
  border:1px solid var(--bd);
  border-radius:var(--r12);
  padding:13px 16px;
  box-shadow:var(--sh1);
}
.stat-k{display:block;font-size:12.5px;color:var(--ink3);margin-bottom:4px;}
.stat-v{
  display:block;
  font-family:var(--font-mono);
  font-size:18px;
  font-weight:700;
  color:var(--pri-d);
  letter-spacing:-.02em;
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:#fff;border-top:1px solid var(--sep);border-bottom:1px solid var(--sep);}
.section-tight{padding:72px 0;}
.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head h2{
  font-size:30px;
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.sec-head p{color:var(--ink2);font-size:16px;}
.sec-head.centered{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- 左文右图 ---------- */
.split{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;
  align-items:start;
}
.split-text h2{
  font-size:30px;
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
  margin-bottom:16px;
}
.split-text > p{
  color:var(--ink2);
  max-width:42ch;
  margin-bottom:30px;
}
.split-media{position:relative;}
.split-media .media-frame{
  border-radius:var(--r20);
  overflow:hidden;
  background:#EDF2FA;
  box-shadow:var(--sh3);
  aspect-ratio:4/3;
}
.split-media .media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.split-media .media-frame:hover img{transform:scale(1.03);}
.media-badge{
  position:absolute;
  left:20px;
  bottom:20px;
  display:inline-flex;
  align-items:center;
  gap:9px;
  background:rgba(255,255,255,.95);
  border:1px solid var(--bd);
  border-radius:var(--r12);
  box-shadow:var(--sh1);
  padding:11px 16px;
  font-size:13.5px;
  font-weight:600;
  color:var(--pri-d);
}
.media-badge i{color:var(--acc);font-size:14px;}
.media-note{
  margin-top:16px;
  font-size:13.5px;
  color:var(--ink3);
  display:flex;
  align-items:flex-start;
  gap:8px;
}
.media-note i{color:var(--acc);margin-top:5px;}

/* ---------- 步骤列表 ---------- */
.step-list{display:flex;flex-direction:column;gap:14px;}
.step-list li{
  display:flex;
  gap:16px;
  background:var(--card);
  border:1px solid var(--bd);
  border-radius:var(--r16);
  padding:18px 20px;
  box-shadow:var(--sh1);
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.step-list li:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh2);
  border-color:#CFE0FA;
}
.step-no{
  flex:0 0 auto;
  width:42px;
  height:42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  background:var(--pri-l);
  color:var(--pri-d);
  font-family:var(--font-mono);
  font-size:15px;
  font-weight:700;
}
.step-list h3{
  font-size:17px;
  font-weight:700;
  line-height:1.5;
  margin-bottom:6px;
}
.step-list p{font-size:14.5px;color:var(--ink2);}

/* ---------- 参数卡 ---------- */
.param-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.param-card{
  background:var(--card);
  border:1px solid var(--bd);
  border-radius:var(--r16);
  padding:24px 22px;
  box-shadow:var(--sh1);
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.param-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:#CFE0FA;}
.param-card .pc-ico{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border-radius:12px;
  background:#E6F7F5;
  color:var(--acc);
  font-size:17px;
  margin-bottom:16px;
}
.param-card h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:14px;}
.param-row{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:14px;
  padding:11px 0;
  border-top:1px dashed var(--sep);
  font-size:14px;
}
.param-row:first-of-type{border-top:none;}
.param-row dt{color:var(--ink3);flex:0 0 auto;}
.param-row dd{color:var(--ink);font-weight:600;text-align:right;}
.param-row dd.mono{font-family:var(--font-mono);letter-spacing:-.01em;}

/* ---------- 场景卡 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.scene-card{
  background:var(--card);
  border:1px solid var(--bd);
  border-radius:var(--r16);
  overflow:hidden;
  box-shadow:var(--sh1);
  display:flex;
  flex-direction:column;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:#CFE0FA;}
.scene-card .sc-media{aspect-ratio:16/9;background:#EDF2FA;overflow:hidden;}
.scene-card .sc-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.scene-card:hover .sc-media img{transform:scale(1.03);}
.scene-card .sc-body{padding:22px 22px 24px;}
.scene-card h3{font-size:18px;font-weight:700;line-height:1.5;margin-bottom:10px;}
.scene-card p{font-size:14.5px;color:var(--ink2);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 11px;
  border-radius:var(--rpill);
  background:var(--pri-l);
  color:var(--pri-d);
  font-size:12px;
  font-weight:600;
}
.tag.alt{background:#E6F7F5;color:#0B7F78;}

/* ---------- 核对清单一（行式） ---------- */
.check-list{
  background:var(--card);
  border:1px solid var(--bd);
  border-radius:var(--r16);
  box-shadow:var(--sh1);
  overflow:hidden;
}
.check-row{
  display:grid;
  grid-template-columns:52px minmax(0,1.1fr) minmax(0,1.6fr);
  gap:18px;
  align-items:center;
  padding:20px 24px;
  border-top:1px solid var(--sep);
  transition:background-color .16s ease;
}
.check-row:first-child{border-top:none;}
.check-row:hover{background:#F7FAFF;}
.check-row .cr-ico{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--pri-l);
  color:var(--pri);
  font-size:16px;
}
.check-row h3{font-size:16px;font-weight:700;line-height:1.5;}
.check-row p{font-size:14.5px;color:var(--ink2);}

/* ---------- CTA 卡 ---------- */
.cta-card{
  background:var(--card);
  border:1px solid #CFE0FA;
  border-radius:var(--r20);
  box-shadow:var(--sh3);
  padding:44px 40px;
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:32px;
  align-items:center;
}
.cta-card h2{
  font-size:28px;
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.cta-card p{color:var(--ink2);max-width:52ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}
.cta-note{
  margin-top:26px;
  font-size:13.5px;
  color:var(--ink3);
  display:flex;
  align-items:center;
  gap:8px;
}
.cta-note i{color:var(--acc);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#0F1B2D;
  color:#B9C6DA;
  padding:64px 0 26px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.2fr);
  gap:36px;
  padding-bottom:36px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .logo-mark{width:34px;height:34px;font-size:15px;box-shadow:none;}
.footer-brand b{color:#fff;font-size:16px;font-weight:700;letter-spacing:-.01em;}
.footer-brand-wrap p{font-size:14px;line-height:1.85;color:#93A4BC;max-width:44ch;}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:#93A4BC;
  transition:color .16s ease,transform .16s ease;
}
.footer-links a i{font-size:11px;color:#5C7290;transition:color .16s ease;}
.footer-links a:hover{color:#7FB0FF;transform:translateX(2px);}
.footer-links a:hover i{color:#7FB0FF;}
.site-footer p{font-size:14px;line-height:1.85;color:#93A4BC;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:14px;
  padding-top:22px;
  font-size:13px;
  color:#7C8CA5;
}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom .fb-links a{color:#9FB0C7;}
.footer-bottom .fb-links a:hover{color:#7FB0FF;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-item{padding:9px 10px;font-size:13.5px;}
  .brand-text{font-size:15px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .nav-links{display:none;}
  .nav-cta .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-panel{justify-content:space-between;}
  .page-hero h1{font-size:32px;}
  .sec-head h2,.split-text h2{font-size:24px;}
  .split{grid-template-columns:minmax(0,1fr);gap:34px;}
  .split-media{order:-1;}
  .param-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-card{grid-template-columns:minmax(0,1fr);padding:34px 28px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;}
  .check-row{grid-template-columns:52px minmax(0,1fr);}
  .check-row p{grid-column:2 / -1;}
}
@media (max-width:767px){
  .container-x{padding:0 20px;}
  .section{padding:56px 0;}
  .page-hero .hero-inner{padding-top:30px;padding-bottom:38px;}
  .page-hero h1{font-size:28px;}
  .hero-sub{font-size:15.5px;}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
  .scene-grid{grid-template-columns:minmax(0,1fr);}
  .param-grid{grid-template-columns:minmax(0,1fr);}
  .hero-cta .btn{width:100%;}
  .btn{min-height:46px;}
  .check-row{padding:18px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575px){
  .brand-text em{display:none;}
  .stat{padding:11px 13px;}
  .stat-v{font-size:16px;}
  .cta-card{padding:26px 20px;}
  .cta-card h2{font-size:22px;}
  .nav-mobile.open{grid-template-columns:minmax(0,1fr);}
}

/* roulang page: category2 */
:root{
  --brand:#1A56D6;
  --brand-dark:#123C8F;
  --brand-light:#E8F0FE;
  --accent:#0FA9A0;
  --cta:#FF7A1A;
  --cta-dark:#E86A0C;
  --bg:#F5F8FD;
  --card:#FFFFFF;
  --text:#101A2B;
  --muted:#5A6A82;
  --weak:#8896AB;
  --border:#E2E9F4;
  --border-hover:#CFE0FA;
  --divider:#EEF3FA;
  --r8:8px; --r12:12px; --r16:16px; --r20:20px; --r999:999px;
  --sh1:0 1px 2px rgba(16,26,43,.06);
  --sh2:0 10px 24px rgba(26,86,214,.12);
  --sh3:0 16px 40px rgba(16,26,43,.10);
  --sec-d:96px; --sec-t:72px; --sec-m:56px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .16s ease,background .16s ease,transform .16s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{letter-spacing:-.01em;line-height:1.25;margin:0;font-weight:700;}
h1{font-size:40px;}
h2{font-size:30px;}
h3{font-size:20px;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

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

/* ---------- 顶部导航卡片面板 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  padding:14px 0 10px;
  background:rgba(245,248,253,.92);
  backdrop-filter:blur(6px);
  transition:box-shadow .2s ease,padding .2s ease;
}
.site-header.is-stuck{padding:10px 0 8px;}
.nav-card{
  display:flex;
  align-items:center;
  gap:18px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r16);
  box-shadow:var(--sh1);
  padding:12px 16px;
  transition:box-shadow .2s ease;
}
.site-header.is-stuck .nav-card{box-shadow:var(--sh2);}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--text);
}
.brand:hover{color:var(--text);}
.logo-mark{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r12);
  background:linear-gradient(135deg,var(--brand) 0%,var(--accent) 100%);
  color:#fff;
  font-size:17px;
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text b{font-size:15px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.brand-text small{font-size:11px;color:var(--weak);letter-spacing:.08em;}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
  flex-wrap:wrap;
}
.nav-item{
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:42px;
  padding:0 13px;
  border-radius:10px;
  font-size:14px;
  color:var(--muted);
  position:relative;
  white-space:nowrap;
}
.nav-item i{font-size:14px;color:var(--weak);transition:color .16s ease;}
.nav-item:hover{background:var(--brand-light);color:var(--brand-dark);}
.nav-item:hover i{color:var(--brand);}
.nav-item.active{
  background:var(--brand-light);
  color:var(--brand-dark);
  font-weight:600;
}
.nav-item.active i{color:var(--brand);}
.nav-item.active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:3px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--border);
  border-radius:var(--r12);
  background:#fff;
  color:var(--brand);
  font-size:17px;
  align-items:center;justify-content:center;
  margin-left:auto;
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--border-hover);}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r999);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease,color .16s ease;
}
.btn-primary{
  background:var(--cta);
  color:#fff;
  box-shadow:0 6px 16px rgba(255,122,26,.24);
}
.btn-primary:hover{background:var(--cta-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,122,26,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{
  background:#fff;
  border-color:var(--border);
  color:var(--brand);
}
.btn-outline:hover{background:var(--brand-light);border-color:var(--border-hover);color:var(--brand-dark);transform:translateY(-2px);}
.btn-ghost{
  background:transparent;
  border-color:var(--border);
  color:var(--muted);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn-sm-x{min-height:40px;padding:0 16px;font-size:14px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{
  padding:22px 0 0;
  font-size:14px;
  color:var(--muted);
}
.crumb-bar ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0;padding:0;list-style:none;
}
.crumb-bar li{display:flex;align-items:center;gap:8px;}
.crumb-bar li+li::before{content:"/";color:var(--weak);}
.crumb-bar a{color:var(--muted);}
.crumb-bar a:hover{color:var(--brand);}
.crumb-bar .current{color:var(--text);font-weight:600;}

/* ---------- Hero ---------- */
.page-hero{padding:34px 0 var(--sec-d);}
.hero-grid{
  display:grid;
  grid-template-columns:6fr 5fr;
  gap:48px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:32px;
  padding:0 14px;
  border-radius:var(--r999);
  background:var(--brand-light);
  color:var(--brand-dark);
  font-size:13px;
  font-weight:600;
  margin-bottom:18px;
}
.eyebrow i{color:var(--accent);}
.page-hero h1{margin-bottom:18px;}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.hero-lead{
  font-size:16px;
  color:var(--muted);
  max-width:42ch;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.meta-pill{
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:34px;
  padding:0 14px;
  border-radius:var(--r999);
  background:#fff;
  border:1px solid var(--border);
  font-size:13px;
  color:var(--muted);
}
.meta-pill i{color:var(--accent);}
.hero-visual{
  position:relative;
  border-radius:var(--r20);
  overflow:hidden;
  box-shadow:var(--sh3);
  aspect-ratio:4/3;
  background:#E9EFF8;
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,0) 45%,rgba(16,26,43,.28) 100%);
}
.hero-badge{
  position:absolute;
  left:18px;bottom:18px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.94);
  border-radius:var(--r999);
  padding:9px 16px;
  font-size:13px;
  font-weight:600;
  color:var(--brand-dark);
  box-shadow:var(--sh1);
}
.hero-badge i{color:var(--cta);}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec-d) 0;}
.section-tight{padding:0 0 var(--sec-d);}
.section-alt{background:#fff;border-top:1px solid var(--divider);border-bottom:1px solid var(--divider);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{margin-bottom:14px;}
.sec-head p{color:var(--muted);margin-bottom:0;}
.sec-tag{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--accent);
  margin-bottom:12px;
}

/* ---------- 两列对比卡 ---------- */
.compare-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.compare-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r20);
  padding:32px;
  box-shadow:var(--sh1);
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
  display:flex;
  flex-direction:column;
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:var(--border-hover);}
.compare-card.is-accent{border-color:var(--border-hover);background:linear-gradient(180deg,#F8FBFF 0%,#FFFFFF 60%);}
.compare-top{
  display:flex;
  align-items:flex-start;
  gap:14px;
  margin-bottom:22px;
}
.compare-ico{
  width:48px;height:48px;
  flex-shrink:0;
  border-radius:var(--r12);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:20px;
  background:var(--brand-light);
  color:var(--brand);
}
.compare-card.is-accent .compare-ico{background:rgba(15,169,160,.12);color:var(--accent);}
.compare-top h3{margin-bottom:6px;}
.compare-top span{font-size:13px;color:var(--weak);}
.compare-list{margin-bottom:24px;}
.compare-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:11px 0;
  font-size:15px;
  color:var(--muted);
  border-bottom:1px dashed var(--divider);
}
.compare-list li:last-child{border-bottom:0;}
.compare-list i{color:var(--accent);font-size:13px;margin-top:6px;}
.compare-list b{color:var(--text);font-weight:600;}
.spec-line{
  display:flex;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--weak);
  padding:8px 0;
}
.spec-line .mono{font-family:var(--mono);color:var(--text);font-size:13px;}
.compare-foot{margin-top:auto;display:flex;gap:12px;flex-wrap:wrap;padding-top:20px;border-top:1px solid var(--divider);}

/* ---------- 特性网格（大小不一） ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.feature-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r16);
  padding:26px;
  box-shadow:var(--sh1);
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:var(--border-hover);}
.feature-card h3{font-size:18px;margin-bottom:10px;}
.feature-card p{font-size:14px;color:var(--muted);margin-bottom:0;}
.feature-ico{
  width:40px;height:40px;
  border-radius:var(--r12);
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-light);
  color:var(--brand);
  font-size:16px;
  margin-bottom:16px;
}
.feature-lg{grid-column:span 2;}
.feature-lg h3{font-size:20px;}
.feature-lg p{font-size:15px;}
.feature-tall{grid-row:span 2;}
.feature-tall .compare-list li{font-size:14px;padding:9px 0;}

/* ---------- 数据条 ---------- */
.stat-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r20);
  padding:30px 26px;
  box-shadow:var(--sh1);
}
.stat-item{text-align:center;padding:6px 8px;}
.stat-item .num{
  font-family:var(--mono);
  font-size:26px;
  font-weight:700;
  color:var(--brand-dark);
  display:block;
  line-height:1.3;
}
.stat-item .lab{font-size:13px;color:var(--weak);}

/* ---------- 建议列表 ---------- */
.tips-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.tip-panel{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r16);
  padding:28px 30px;
  box-shadow:var(--sh1);
}
.tip-panel h3{margin-bottom:16px;display:flex;align-items:center;gap:10px;}
.tip-panel h3 i{color:var(--accent);font-size:17px;}
.tip-panel li{
  position:relative;
  padding-left:22px;
  margin-bottom:12px;
  font-size:15px;
  color:var(--muted);
}
.tip-panel li:last-child{margin-bottom:0;}
.tip-panel li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--brand-light);
  border:2px solid var(--brand);
}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 var(--sec-d);}
.cta-card{
  position:relative;
  overflow:hidden;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r20);
  box-shadow:var(--sh3);
  padding:48px;
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:36px;
  align-items:center;
}
.cta-card::before{
  content:"";
  position:absolute;
  right:-80px;top:-80px;
  width:280px;height:280px;
  border-radius:50%;
  background:var(--brand-light);
  opacity:.6;
}
.cta-card > *{position:relative;z-index:1;}
.cta-card h2{margin-bottom:14px;}
.cta-card p{color:var(--muted);margin-bottom:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#0F1B2D;
  color:#C6D2E4;
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:36px;
  padding-bottom:36px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand .logo-mark{
  width:34px;height:34px;
  font-size:15px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--accent) 100%);
}
.footer-brand b{color:#fff;font-size:15px;}
.footer-brand-wrap p{
  font-size:14px;
  color:#93A4BE;
  line-height:1.8;
  margin:0;
  max-width:42ch;
}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  font-size:14px;
  color:#93A4BE;
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition:color .16s ease,transform .16s ease;
}
.footer-links a i{font-size:11px;color:#5E7597;}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.footer-links a:hover i{color:var(--accent);}
.site-footer p{font-size:14px;color:#93A4BE;line-height:1.8;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  align-items:center;
  justify-content:space-between;
  padding-top:24px;
  font-size:13px;
  color:#7E90AC;
}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom .fb-links a{color:#93A4BE;font-size:13px;}
.footer-bottom .fb-links a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  h1{font-size:36px;}
  h2{font-size:27px;}
  .hero-grid{gap:36px;}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:30px;}
}
@media (max-width:991.98px){
  :root{--sec-d:72px;}
  h1{font-size:32px;}
  h2{font-size:24px;}
  .nav-links{
    display:none;
    order:4;
    width:100%;
    margin-left:0;
    padding-top:10px;
    border-top:1px solid var(--divider);
    display:none;
    grid-template-columns:1fr 1fr;
    gap:8px;
  }
  .nav-card{flex-wrap:wrap;}
  .nav-card.open .nav-links{display:grid;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-item{height:48px;justify-content:flex-start;padding:0 12px;}
  .nav-item.active::after{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-visual{aspect-ratio:16/9;}
  .compare-grid{grid-template-columns:1fr;}
  .feature-grid{grid-template-columns:1fr 1fr;}
  .feature-lg{grid-column:span 2;}
  .feature-tall{grid-row:auto;}
  .stat-band{grid-template-columns:1fr 1fr;gap:16px;padding:24px 20px;}
  .tips-grid{grid-template-columns:1fr;}
  .cta-card{grid-template-columns:1fr;padding:36px 28px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:575.98px){
  :root{--sec-d:56px;--sec-t:56px;}
  .container-x{padding:0 20px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .brand-text b{font-size:14px;}
  .brand-text small{display:none;}
  .page-hero{padding:24px 0 var(--sec-d);}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-x{width:100%;}
  .feature-grid{grid-template-columns:1fr;}
  .feature-lg{grid-column:span 1;}
  .stat-band{grid-template-columns:1fr;gap:8px;}
  .stat-item{text-align:left;display:flex;align-items:baseline;gap:12px;padding:10px 6px;border-bottom:1px dashed var(--divider);}
  .stat-item:last-child{border-bottom:0;}
  .compare-card{padding:24px 20px;}
  .cta-card{padding:30px 22px;}
  .cta-actions .btn-x{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .sec-head{margin-bottom:30px;}
}

/* roulang page: category3 */
:root{
  --primary:#1A56D6;
  --primary-dark:#123C8F;
  --primary-light:#E8F0FE;
  --accent:#0FA9A0;
  --accent-light:#E3F7F5;
  --cta:#FF7A1A;
  --bg:#F5F8FD;
  --card:#FFFFFF;
  --text:#101A2B;
  --text-2:#5A6A82;
  --text-3:#8896AB;
  --border:#E2E9F4;
  --divider:#EEF3FA;
  --r8:8px;
  --r12:12px;
  --r16:16px;
  --r20:20px;
  --r999:999px;
  --sh1:0 1px 2px rgba(16,26,43,.06);
  --sh2:0 10px 24px rgba(26,86,214,.12);
  --sh3:0 16px 40px rgba(16,26,43,.10);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;background:var(--bg);}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:transparent;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:radial-gradient(rgba(26,86,214,.05) 1px,transparent 1px);
  background-size:28px 28px;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .16s ease,background-color .16s ease,border-color .16s ease,transform .16s ease;}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;}
p{margin:0 0 16px;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--text);font-weight:700;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){.container-x{max-width:1240px;}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  padding:12px 0;
}
.nav-panel{
  display:flex;
  align-items:center;
  gap:16px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r16);
  box-shadow:var(--sh1);
  padding:10px 14px;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled .nav-panel{
  box-shadow:var(--sh2);
  border-color:#CFE0FA;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--text);
}
.brand:hover{color:var(--text);}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:12px;
  background:var(--primary);
  color:#fff;
  font-size:17px;
  box-shadow:0 6px 14px rgba(26,86,214,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{font-size:16px;font-weight:700;}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-3);}
.nav-links{display:flex;align-items:center;gap:4px;flex:1;}
.nav-item{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:9px 12px;
  border-radius:10px;
  font-size:14px;
  color:var(--text-2);
  white-space:nowrap;
  transition:background-color .16s ease,color .16s ease;
}
.nav-item i{font-size:14px;color:var(--text-3);transition:color .16s ease;}
.nav-item:hover{background:var(--primary-light);color:var(--primary-dark);}
.nav-item:hover i{color:var(--primary);}
.nav-item.active{background:var(--primary-light);color:var(--primary-dark);font-weight:600;}
.nav-item.active i{color:var(--primary);}
.nav-item.active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
}
.nav-cta{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:none;
  border-radius:12px;
  background:var(--primary-light);
  color:var(--primary-dark);
  font-size:16px;
  cursor:pointer;
  align-items:center;
  justify-content:center;
}
.mobile-panel{display:none;}
.mobile-panel.open{display:block;}
.mobile-panel{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r16);
  box-shadow:var(--sh2);
  margin-top:10px;
  padding:14px;
}
.mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.mobile-grid a{
  display:flex;
  align-items:center;
  gap:8px;
  padding:12px;
  border-radius:10px;
  background:var(--bg);
  font-size:14px;
  color:var(--text-2);
  min-height:44px;
}
.mobile-grid a i{color:var(--text-3);}
.mobile-grid a.active{background:var(--primary-light);color:var(--primary-dark);font-weight:600;}
.mobile-grid a.active i{color:var(--primary);}

/* ---------- Buttons ---------- */
.btn-x{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 20px;
  border:none;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:background-color .16s ease,color .16s ease,box-shadow .16s ease,transform .16s ease,border-color .16s ease;
}
.btn-x:active{transform:translateY(0);}
.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:0 6px 16px rgba(26,86,214,.22);
}
.btn-primary:hover{
  background:var(--primary-dark);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 12px 26px rgba(26,86,214,.26);
}
.btn-cta{
  background:var(--cta);
  color:#fff;
  box-shadow:0 6px 16px rgba(255,122,26,.26);
}
.btn-cta:hover{
  background:#EF6C0A;
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 12px 26px rgba(255,122,26,.30);
}
.btn-ghost{
  background:var(--card);
  color:var(--primary-dark);
  border:1px solid var(--border);
}
.btn-ghost:hover{
  border-color:var(--primary);
  background:var(--primary-light);
  color:var(--primary-dark);
}
.btn-sm{padding:10px 16px;font-size:14px;}

/* ---------- Badges ---------- */
.badge-x{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:var(--r999);
  font-size:12px;
  font-weight:600;
  line-height:1.5;
}
.badge-blue{background:var(--primary-light);color:var(--primary-dark);}
.badge-teal{background:var(--accent-light);color:#0B7F78;}
.badge-orange{background:#FFF1E5;color:#B5540A;}
.badge-soft{background:var(--divider);color:var(--text-2);}

/* ---------- Breadcrumb ---------- */
.breadcrumb-x{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
  padding:24px 0 18px;
}
.breadcrumb-x a{color:var(--text-2);}
.breadcrumb-x a:hover{color:var(--primary);}
.breadcrumb-x .sep{color:#C6D3E7;}
.breadcrumb-x .current{color:var(--primary-dark);font-weight:600;}

/* ---------- Hero ---------- */
.page-hero{padding-bottom:8px;}
.hero-card{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r20);
  box-shadow:var(--sh1);
  overflow:hidden;
}
.hero-text{padding:44px 40px;}
.hero-text h1{
  font-size:40px;
  line-height:1.25;
  margin:16px 0 16px;
}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  max-width:42ch;
  margin-bottom:0;
}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px;}
.hero-media{
  position:relative;
  min-height:400px;
  background:#E9EFF9;
}
.hero-media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(245,248,253,.26),rgba(245,248,253,.08));
  pointer-events:none;
}
.hero-badge{
  position:absolute;
  left:24px;
  bottom:24px;
  z-index:2;
  display:flex;
  flex-direction:column;
  gap:2px;
  background:#FFFFFF;
  border:1px solid var(--border);
  border-radius:14px;
  padding:12px 18px;
  box-shadow:var(--sh2);
}
.hero-badge .hb-k{font-size:12px;color:var(--text-3);}
.hero-badge .hb-v{font-family:var(--mono);font-size:18px;font-weight:700;color:var(--primary-dark);}

/* ---------- Stats ---------- */
.stats-bar{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--border);
  border:1px solid var(--border);
  border-radius:var(--r16);
  overflow:hidden;
  margin-top:24px;
  box-shadow:var(--sh1);
}
.stat{background:var(--card);padding:18px 22px;}
.stat .k{font-size:13px;color:var(--text-3);}
.stat .v{
  font-family:var(--mono);
  font-size:19px;
  font-weight:600;
  color:var(--text);
  letter-spacing:-.01em;
}

/* ---------- Section ---------- */
.section{padding:96px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:30px;line-height:1.3;margin-bottom:14px;}
.section-head p{color:var(--text-2);margin-bottom:0;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  background:var(--primary-light);
  padding:6px 14px;
  border-radius:var(--r999);
  margin-bottom:14px;
}
.lead-text{
  font-size:17px;
  color:var(--text-2);
  max-width:820px;
  margin-bottom:36px;
}

/* ---------- Feature split ---------- */
.feature-split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:36px;
  align-items:center;
}
.feature-media{
  border-radius:var(--r16);
  overflow:hidden;
  border:1px solid var(--border);
  box-shadow:var(--sh1);
  background:#E9EFF9;
  aspect-ratio:4/3;
}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.feature-media:hover img{transform:scale(1.03);}
.feature-list{display:flex;flex-direction:column;gap:18px;}
.feature-item{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r12);
  padding:18px 20px;
  box-shadow:var(--sh1);
  transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.feature-item:hover{transform:translateY(-4px);border-color:#CFE0FA;box-shadow:var(--sh2);}
.feature-item h3{font-size:17px;margin-bottom:6px;}
.feature-item p{margin:0;font-size:14px;color:var(--text-2);}
.feature-item .fi-k{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:12px;
  font-weight:600;
  color:var(--accent);
  margin-bottom:8px;
}

/* ---------- Timeline ---------- */
.timeline{max-width:900px;margin:0 auto;}
.tl-item{
  position:relative;
  padding-left:78px;
  padding-bottom:26px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:23px;
  top:54px;
  bottom:-4px;
  width:2px;
  background:#DCE6F6;
}
.tl-item:last-child::before{display:none;}
.tl-num{
  position:absolute;
  left:0;
  top:0;
  width:48px;
  height:48px;
  border-radius:var(--r999);
  background:#fff;
  border:2px solid var(--primary-light);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--mono);
  font-size:14px;
  font-weight:700;
  box-shadow:var(--sh1);
}
.tl-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r16);
  padding:22px 24px;
  box-shadow:var(--sh1);
  transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.tl-card:hover{transform:translateY(-4px);border-color:#CFE0FA;box-shadow:var(--sh2);}
.tl-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px;}
.tl-ver{
  font-family:var(--mono);
  font-size:14px;
  font-weight:700;
  color:var(--primary-dark);
  background:var(--primary-light);
  padding:3px 10px;
  border-radius:var(--r8);
}
.tl-date{font-family:var(--mono);font-size:13px;color:var(--text-3);}
.tl-card h3{font-size:19px;margin-bottom:8px;}
.tl-card p{margin:0;color:var(--text-2);font-size:15px;}
.tl-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;}

/* ---------- Row list ---------- */
.row-list{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:18px;
  overflow:hidden;
  box-shadow:var(--sh1);
}
.row-item{
  display:grid;
  grid-template-columns:64px 1fr auto;
  gap:18px;
  align-items:center;
  padding:20px 24px;
  border-bottom:1px solid var(--divider);
}
.row-item:last-child{border-bottom:none;}
.row-item:nth-child(even){background:#FAFCFF;}
.row-idx{
  font-family:var(--mono);
  font-size:14px;
  font-weight:700;
  color:var(--accent);
}
.row-body h3{font-size:16px;margin-bottom:4px;}
.row-body p{margin:0;font-size:14px;color:var(--text-2);}
.row-tag{
  font-size:12px;
  font-weight:600;
  color:var(--primary-dark);
  background:var(--primary-light);
  border-radius:var(--r999);
  padding:5px 12px;
  white-space:nowrap;
}

/* ---------- Param list ---------- */
.param-list{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:18px;
  overflow:hidden;
  box-shadow:var(--sh1);
}
.param-row{
  display:grid;
  grid-template-columns:220px 1fr;
  gap:22px;
  padding:17px 24px;
  border-bottom:1px solid var(--divider);
  font-size:15px;
}
.param-row:last-child{border-bottom:none;}
.param-row:nth-child(odd){background:#FAFCFF;}
.param-row .pt{color:var(--text-3);font-size:14px;}
.param-row .pv{color:var(--text);}
.mono{font-family:var(--mono);font-size:14px;}

/* ---------- CTA ---------- */
.cta-card{
  background:var(--primary-dark);
  border-radius:var(--r20);
  padding:52px 44px;
  display:grid;
  grid-template-columns:1.4fr auto;
  gap:32px;
  align-items:center;
  box-shadow:var(--sh3);
}
.cta-card h2{color:#fff;font-size:28px;line-height:1.3;margin-bottom:12px;}
.cta-card p{color:#CBD9F4;margin:0;max-width:52ch;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.cta-actions .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35);}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}

/* ---------- Footer ---------- */
.site-footer{
  background:#0F1B2D;
  color:#B9C6DA;
  margin-top:96px;
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:16px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-brand .logo-mark{background:#1A56D6;}
.footer-brand-wrap p{
  font-size:14px;
  line-height:1.8;
  color:#93A3BC;
  margin:0;
  max-width:44ch;
}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:#7BA4FF;
  margin-bottom:14px;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:#B9C6DA;
  transition:color .16s ease,transform .16s ease;
}
.footer-links a i{font-size:11px;color:#5E739A;}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.site-footer .footer-links p,
.site-footer p.small{font-size:13px;color:#8595AF;margin:0 0 14px;line-height:1.8;}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0;
  font-size:13px;
  color:#8595AF;
}
.fb-links{display:flex;gap:18px;flex-wrap:wrap;}
.fb-links a{color:#8595AF;}
.fb-links a:hover{color:#fff;}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .hero-text h1{font-size:34px;}
}
@media (max-width:991.98px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-cta .btn-x{display:none;}
  .section{padding:72px 0;}
  .page-hero{padding-bottom:0;}
  .hero-card{grid-template-columns:1fr;}
  .hero-text{padding:34px 28px;}
  .hero-text h1{font-size:32px;}
  .hero-media{min-height:280px;order:-1;}
  .stats-bar{grid-template-columns:repeat(2,1fr);}
  .feature-split{grid-template-columns:1fr;gap:26px;}
  .cta-card{grid-template-columns:1fr;padding:40px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section-head h2{font-size:24px;}
}
@media (max-width:767.98px){
  .container-x{padding:0 20px;}
  .section{padding:56px 0;}
  .brand-text em{display:none;}
  .brand-text b{font-size:15px;}
}
@media (max-width:575.98px){
  .hero-text h1{font-size:28px;}
  .hero-text{padding:28px 20px;}
  .hero-cta .btn-x{width:100%;}
  .stats-bar{grid-template-columns:1fr;}
  .row-item{grid-template-columns:44px 1fr;gap:14px;padding:18px;}
  .row-tag{grid-column:2;justify-self:start;}
  .param-row{grid-template-columns:1fr;gap:6px;padding:16px 18px;}
  .tl-item{padding-left:60px;}
  .tl-num{width:38px;height:38px;font-size:12px;}
  .tl-item::before{left:18px;top:44px;}
  .tl-card{padding:18px;}
  .mobile-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-card h2{font-size:22px;}
  .site-footer{margin-top:56px;}
}

/* roulang page: category4 */
:root{
  --brand:#1A56D6;
  --brand-dark:#123C8F;
  --brand-soft:#E8F0FE;
  --accent:#0FA9A0;
  --accent-dark:#0B7C76;
  --cta:#FF7A1A;
  --cta-dark:#C4560B;
  --bg:#F5F8FD;
  --card:#FFFFFF;
  --text:#101A2B;
  --muted:#5A6A82;
  --weak:#8896AB;
  --line:#E2E9F4;
  --line-strong:#CFE0FA;
  --divider:#EEF3FA;
  --r8:8px; --r12:12px; --r16:16px; --r20:20px; --pill:999px;
  --sh1:0 1px 2px rgba(16,26,43,.06);
  --sh2:0 10px 24px rgba(26,86,214,.12);
  --sh3:0 16px 40px rgba(16,26,43,.10);
  --sec-pad:96px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.28;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:0;}

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

/* ============ 按钮 ============ */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 20px;border-radius:var(--r12);
  font-size:14.5px;font-weight:600;border:1px solid transparent;
  transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
  white-space:nowrap;
}
.btn-primary-x{background:var(--brand);color:#fff;box-shadow:0 4px 12px rgba(26,86,214,.22);}
.btn-primary-x:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh2);}
.btn-primary-x:active{transform:translateY(0);box-shadow:var(--sh1);}
.btn-cta-x{background:var(--cta);color:#fff;box-shadow:0 4px 12px rgba(255,122,26,.24);}
.btn-cta-x:hover{background:var(--cta-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh2);}
.btn-cta-x:active{transform:translateY(0);}
.btn-ghost-x{background:#fff;border-color:var(--line);color:var(--brand-dark);}
.btn-ghost-x:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);}
.btn-ghost-x:active{transform:translateY(0);}
.btn-soft-x{background:var(--brand-soft);color:var(--brand-dark);}
.btn-soft-x:hover{background:#D8E6FD;color:var(--brand-dark);}
.btn-sm-x{min-height:40px;padding:8px 14px;font-size:13.5px;border-radius:10px;}

/* ============ 徽章 / 标签 ============ */
.badge-x{
  display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:var(--pill);
  font-size:12px;font-weight:600;background:var(--brand-soft);color:var(--brand-dark);
}
.badge-accent{background:rgba(15,169,160,.12);color:var(--accent-dark);}
.badge-cta{background:rgba(255,122,26,.13);color:var(--cta-dark);}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--muted);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  padding:14px 0 12px;
  background:rgba(245,248,253,.94);
  transition:padding .2s ease,background .2s ease;
}
.nav-card{
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r16);
  padding:12px 16px;box-shadow:var(--sh1);
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{padding:10px 0 8px;}
.site-header.is-scrolled .nav-card{box-shadow:var(--sh3);border-color:var(--line-strong);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:38px;height:38px;border-radius:var(--r12);
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:17px;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{font-size:15px;font-weight:700;}
.brand-text span{font-size:12px;color:var(--weak);}
.nav-links{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-left:auto;}
.nav-item{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  min-height:44px;padding:9px 12px;border-radius:10px;
  font-size:14px;color:var(--muted);transition:background .16s ease,color .16s ease;
}
.nav-item i{font-size:14px;color:var(--weak);transition:color .16s ease;}
.nav-item:hover{background:var(--brand-soft);color:var(--brand-dark);}
.nav-item:hover i{color:var(--brand);}
.nav-item.active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600;}
.nav-item.active i{color:var(--brand);}
.nav-item.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r12);
  background:var(--brand-soft);color:var(--brand-dark);font-size:16px;
  align-items:center;justify-content:center;flex:0 0 auto;
}
.nav-mobile{display:none;}
.nav-mobile.open{
  display:grid;grid-template-columns:1fr 1fr;gap:10px;
  margin-top:10px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r16);padding:12px;box-shadow:var(--sh2);
}
.nav-mobile .nav-item{margin:0;background:#F8FAFE;justify-content:flex-start;}
.nav-mobile .nav-item.active{background:var(--brand-soft);}
.nav-mobile .nav-item.active::after{display:none;}
.nav-mobile .btn-x{grid-column:1 / -1;width:100%;}

@media (max-width:1199px){
  .nav-item{font-size:13.5px;padding:9px 10px;}
  .brand-text b{font-size:14.5px;}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{margin-left:auto;}
}

/* ============ 通用板块 ============ */
.sec{padding:var(--sec-pad) 0;}
.sec-tight{padding:56px 0;}
.sec-white{background:#fff;border-top:1px solid var(--divider);border-bottom:1px solid var(--divider);}
.sec-head{max-width:760px;margin-bottom:36px;}
.sec-head h2{font-size:30px;margin-bottom:14px;}
.sec-head p{color:var(--muted);font-size:15.5px;}
.sec-tag{margin-bottom:16px;}
@media (max-width:991px){
  :root{--sec-pad:72px;}
  .sec-head h2{font-size:24px;}
}
@media (max-width:767px){
  :root{--sec-pad:56px;}
  .container-x{padding:0 20px;}
  .sec-head h2{font-size:22px;}
}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13.5px;color:var(--weak);margin-bottom:20px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb i{font-size:10px;color:var(--weak);}

/* ============ 页头 Hero ============ */
.page-hero{padding:34px 0 0;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.hero-copy h1{font-size:40px;margin-bottom:18px;}
.hero-copy .lead{font-size:17px;color:var(--muted);margin-bottom:22px;max-width:32em;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-media{position:relative;border-radius:var(--r20);overflow:hidden;box-shadow:var(--sh3);background:#E9EFF9;}
.hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16 / 11;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(150deg,rgba(232,240,254,.52),rgba(255,255,255,.12));
}
.hero-media .media-note{
  position:absolute;left:16px;right:16px;bottom:16px;z-index:2;
  display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.94);border-radius:var(--r12);padding:10px 14px;
  font-size:13px;color:var(--brand-dark);font-weight:600;box-shadow:var(--sh1);
}
@media (max-width:991px){
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-copy h1{font-size:32px;}
}
@media (max-width:767px){
  .hero-copy h1{font-size:28px;}
  .hero-copy .lead{font-size:16px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn-x{width:100%;}
}

/* ============ 图示横幅 ============ */
.banner-media{
  position:relative;border-radius:var(--r16);overflow:hidden;
  background:#E9EFF9;box-shadow:var(--sh1);margin-top:40px;
}
.banner-media img{width:100%;aspect-ratio:21 / 7;object-fit:cover;}
.banner-media figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 20px;font-size:13.5px;color:#fff;
  background:linear-gradient(180deg,rgba(16,26,43,0),rgba(16,26,43,.62));
}
@media (max-width:767px){
  .banner-media img{aspect-ratio:16 / 9;}
}

/* ============ 行式资源列表 ============ */
.res-list{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r16);
  overflow:hidden;box-shadow:var(--sh1);
}
.res-row{
  display:grid;grid-template-columns:44px minmax(0,1fr) auto;
  gap:18px;align-items:center;
  padding:18px 22px;border-bottom:1px solid var(--divider);
  transition:background .16s ease;
}
.res-row:last-child{border-bottom:0;}
.res-row:hover{background:#F7FAFF;}
.res-ico{
  width:44px;height:44px;border-radius:var(--r12);
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:17px;
}
.res-ico.accent{background:rgba(15,169,160,.12);color:var(--accent-dark);}
.res-main h3{font-size:16px;margin-bottom:4px;}
.res-main p{font-size:13.5px;color:var(--muted);}
.res-side{display:flex;align-items:center;gap:16px;}
.res-meta{font-size:12.5px;color:var(--weak);white-space:nowrap;}
@media (max-width:767px){
  .res-row{grid-template-columns:40px minmax(0,1fr);gap:14px;padding:16px 16px;}
  .res-ico{width:40px;height:40px;font-size:15px;}
  .res-side{grid-column:2;justify-content:space-between;flex-wrap:wrap;gap:10px;width:100%;}
  .res-side .btn-x{width:100%;}
}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:1fr;gap:24px;}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r12);
  box-shadow:var(--sh1);overflow:hidden;transition:border-color .16s ease,box-shadow .16s ease;
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  min-height:44px;transition:color .16s ease,background .16s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-q .fx{
  width:26px;height:26px;border-radius:var(--r8);flex:0 0 auto;
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:12px;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-q[aria-expanded="true"]{color:var(--brand);background:#F7FAFF;}
.faq-q[aria-expanded="true"] .fx{transform:rotate(45deg);background:var(--brand);color:#fff;}
.faq-body{
  padding:0 20px 20px;font-size:15px;color:var(--muted);background:#F7FAFF;
}
.faq-body p{margin:0;}
@media (max-width:767px){
  .faq-q{font-size:15px;padding:16px;}
  .faq-body{padding:0 16px 18px;font-size:14.5px;}
}

/* ============ 参数 / 清单行 ============ */
.spec-list{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r16);
  overflow:hidden;box-shadow:var(--sh1);
}
.spec-row{
  display:grid;grid-template-columns:220px minmax(0,1fr);
  gap:18px;padding:14px 22px;border-bottom:1px solid var(--divider);
  font-size:14.5px;
}
.spec-row:last-child{border-bottom:0;}
.spec-row:nth-child(odd){background:#FBFDFF;}
.spec-row dt{color:var(--muted);}
.spec-row dd{margin:0;color:var(--text);}
@media (max-width:767px){
  .spec-row{grid-template-columns:1fr;gap:4px;padding:14px 16px;}
  .spec-row dt{font-size:13px;color:var(--weak);}
}

/* ============ CTA 卡 ============ */
.cta-card{
  background:linear-gradient(135deg,#EAF1FE 0%,#F5F8FD 100%);
  border:1px solid var(--line-strong);border-radius:var(--r20);
  padding:52px 48px;box-shadow:var(--sh1);
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:36px;align-items:center;
}
.cta-card h2{font-size:28px;margin-bottom:14px;}
.cta-card p{color:var(--muted);font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}
@media (max-width:991px){
  .cta-card{grid-template-columns:1fr;padding:36px 28px;gap:24px;}
  .cta-card h2{font-size:22px;}
  .cta-actions{justify-content:flex-start;}
}
@media (max-width:767px){
  .cta-card{padding:28px 20px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn-x{width:100%;}
}

/* ============ 页脚 ============ */
.site-footer{background:#0F1B2D;color:#C6D2E4;padding:64px 0 28px;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;
  padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .logo-mark{background:rgba(255,255,255,.10);color:#fff;}
.footer-brand b{color:#fff;font-size:15.5px;}
.footer-brand-wrap p{font-size:13.8px;color:#93A2BC;line-height:1.85;max-width:36em;}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  font-size:13.8px;color:#A9B8D0;display:inline-flex;align-items:center;gap:8px;
  transition:color .16s ease,transform .16s ease;
}
.footer-links a i{font-size:11px;color:#5E7093;}
.footer-links a:hover{color:#7FB0FF;transform:translateX(-2px);}
.footer-links a:hover i{color:#7FB0FF;}
.site-footer p{font-size:13.8px;color:#93A2BC;}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:#7E8FA9;
}
.fb-links{display:flex;gap:18px;flex-wrap:wrap;}
.fb-links a{color:#A9B8D0;}
.fb-links a:hover{color:#7FB0FF;}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
}