/* roulang page: index */
:root{
  --brand-600:#1B5FD9;
  --brand-700:#12429E;
  --brand-500:#3C7BEA;
  --brand-50:#EAF1FD;
  --teal:#0FA98C;
  --orange:#F5822B;
  --ink:#0E1B2E;
  --text:#465A75;
  --muted:#7A8AA1;
  --line:#E4EAF3;
  --bg:#F4F7FB;
  --card:#FFFFFF;
  --r-card:14px;
  --r-banner:20px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(14,27,46,.06);
  --sh-md:0 6px 20px rgba(20,45,90,.08);
  --sh-lg:0 16px 40px rgba(20,45,90,.10);
  --font:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
a{color:var(--brand-600);text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%}
@media(min-width:640px){.container{padding:0 28px}}
@media(min-width:1024px){.container{padding:0 32px}}
.tnum{font-variant-numeric:tabular-nums}

/* ============ 顶部状态条 ============ */
.topbar{background:var(--ink);color:#D9E4F6;font-size:13px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:34px;padding-top:4px;padding-bottom:4px}
.topbar-left{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.topbar-text{white-space:nowrap}
.status-dot{width:8px;height:8px;border-radius:50%;background:#2ED3B0;box-shadow:0 0 0 3px rgba(46,211,176,.18);flex:none}
.topbar-divider{width:1px;height:14px;background:rgba(255,255,255,.18)}
#countdown{color:var(--orange);font-weight:700;font-variant-numeric:tabular-nums}
.topbar-right a{color:#C6D3E6;border-bottom:1px solid rgba(198,211,230,.35);padding-bottom:1px}
.topbar-right a:hover{color:#fff;border-bottom-color:#fff}
@media(max-width:640px){.topbar-right{display:none}.topbar-divider{display:none}}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:#fff;box-shadow:0 1px 0 var(--line)}
.mainnav{border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);flex:none}
.logo-mark{
  width:28px;height:28px;border-radius:9px;flex:none;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500));
  color:#fff;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.logo-text{font-size:19px;font-weight:700;color:var(--ink);white-space:nowrap}
.logo-pulse{width:8px;height:8px;border-radius:50%;background:var(--teal);flex:none;animation:pulse 2.4s ease-out infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(15,169,140,.45)}70%{box-shadow:0 0 0 8px rgba(15,169,140,0)}100%{box-shadow:0 0 0 0 rgba(15,169,140,0)}}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  font-size:15px;color:var(--text);padding:6px 0;position:relative;transition:color .2s ease-out;
}
.nav-links a:hover{color:var(--brand-600)}
.nav-links a.active{color:var(--brand-600);font-weight:600}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--brand-600);
}
.nav-right{display:flex;align-items:center;gap:14px}
.pill{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:13px;background:var(--brand-50);color:var(--brand-600);font-weight:500}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:42px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:background .2s ease-out,color .2s ease-out,box-shadow .2s ease-out,transform .15s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-700);box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-50);box-shadow:var(--sh-sm)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.burger{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease-out,opacity .2s ease-out}
@media(max-width:1023px){
  .nav-links,.nav-right .pill,.nav-right .btn-primary{display:none}
  .burger{display:flex}
  .nav-right{gap:10px}
}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(14,27,46,.45);opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;z-index:80}
.drawer{position:fixed;top:0;right:0;height:100%;width:300px;max-width:82vw;background:#fff;z-index:90;
  transform:translateX(102%);transition:transform .25s ease-out;display:flex;flex-direction:column;padding:20px;overflow-y:auto}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line)}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;font-size:18px;color:var(--muted);line-height:1}
.drawer-status{display:flex;flex-direction:column;gap:8px;padding:16px 0;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.drawer-nav{display:flex;flex-direction:column;padding:8px 0}
.drawer-nav a{padding:13px 4px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer-nav a.active{color:var(--brand-600);font-weight:600}
.drawer-cta{margin-top:18px}

/* ============ 通用板块 ============ */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:96px 0}}
.sec-head{max-width:760px;margin-bottom:32px}
.sec-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3}
.sec-head p{margin-top:12px;font-size:16px;color:var(--text)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-600);background:var(--brand-50);border-radius:999px;height:26px;padding:0 12px;margin-bottom:14px}
.textlink{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand-600)}
.textlink .arrow{transition:transform .2s ease-out}
.textlink:hover .arrow{transform:translateX(2px)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out}
.card:hover{box-shadow:var(--sh-md);transform:translateY(-2px)}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:13px;background:var(--brand-50);color:var(--brand-600);font-weight:500}
.tag-online{background:var(--teal);color:#fff}
.tag-hot{background:var(--orange);color:#fff}

/* ============ Hero ============ */
.hero{
  position:relative;
  background:
    linear-gradient(180deg,#EEF4FE 0%,#F7FAFF 62%,#FFFFFF 100%);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(27,95,217,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(27,95,217,.055) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1fr;gap:36px;padding:52px 0 56px;align-items:center}
@media(min-width:1024px){.hero-inner{grid-template-columns:6fr 6fr;gap:48px;padding:72px 0 76px}}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.hero-badges .pill{background:#fff;border:1px solid var(--line);color:var(--brand-600)}
.hero h1{font-size:clamp(30px,4.2vw,46px);line-height:1.22;font-weight:700}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.7;color:var(--text);max-width:560px;font-weight:600}
.hero-lead{margin-top:10px;font-size:16px;line-height:1.75;color:var(--text);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-notes{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;font-size:13px;color:var(--muted)}
.hero-notes span{display:inline-flex;align-items:center;gap:6px}
.dot-check{width:14px;height:14px;border-radius:4px;background:var(--brand-50);color:var(--brand-600);display:inline-flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;flex:none}
.hero-media{
  position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--sh-lg);
  aspect-ratio:16/10;background:#E9EFF8;
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media figcaption{
  position:absolute;left:16px;bottom:16px;right:16px;
  background:rgba(14,27,46,.72);color:#EAF1FD;border-radius:10px;
  padding:10px 14px;font-size:13px;line-height:1.6;
}

/* 三要点横条 */
.strip{background:#fff;border-bottom:1px solid var(--line)}
.strip-inner{display:grid;grid-template-columns:1fr;gap:0}
@media(min-width:768px){.strip-inner{grid-template-columns:repeat(3,1fr)}}
.strip-item{padding:22px 0;display:flex;gap:14px;align-items:flex-start}
@media(min-width:768px){
  .strip-item{padding:26px 28px}
  .strip-item+.strip-item{border-left:1px solid var(--line)}
}
@media(max-width:767px){
  .strip-item+.strip-item{border-top:1px solid var(--line)}
}
.strip-num{font-size:13px;font-weight:700;color:var(--brand-600);background:var(--brand-50);border-radius:8px;height:26px;min-width:34px;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums}
.strip-item h3{font-size:16px;margin-bottom:4px}
.strip-item p{font-size:14px;color:var(--text);line-height:1.7}

/* ============ 价值主张 ============ */
.value-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:1024px){.value-grid{grid-template-columns:5fr 7fr;gap:48px;align-items:start}}
.value-left h2{font-size:clamp(24px,3vw,34px);line-height:1.3}
.value-left p{margin-top:16px}
.value-left .textlink{margin-top:22px}
.value-cards{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:640px){.value-cards{grid-template-columns:1fr 1fr;align-items:start}}
.value-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;transition:box-shadow .2s ease-out,transform .2s ease-out}
.value-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px)}
.value-card-img{aspect-ratio:3/2;overflow:hidden;background:#E9EFF8}
.value-card-img img{width:100%;height:100%;object-fit:cover}
.value-card-body{padding:24px}
.value-card h3{font-size:19px;line-height:1.4}
.value-card p{margin-top:10px;font-size:15px}
.value-card ul{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.value-card li{display:flex;gap:9px;font-size:14.5px;color:var(--text)}
@media(min-width:640px){.value-card.offset{margin-top:24px}}
.mini-stats{display:flex;gap:26px;margin-top:20px;flex-wrap:wrap}
.mini-stats strong{display:block;font-size:26px;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.2}
.mini-stats span{font-size:13px;color:var(--muted)}

/* ============ 功能分组 ============ */
.func-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:1024px){.func-grid{grid-template-columns:3fr 9fr;gap:32px;align-items:start}}
.tabs{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
@media(min-width:1024px){.tabs{flex-direction:column;overflow:visible;padding-bottom:0;position:sticky;top:120px}}
.tab-btn{
  border:1px solid transparent;background:#EEF3FA;color:var(--text);
  border-radius:var(--r-btn);padding:12px 18px;font-size:15px;font-weight:600;text-align:left;
  white-space:nowrap;transition:background .2s ease-out,color .2s ease-out,box-shadow .2s ease-out;
}
.tab-btn:hover{background:#E3EBF8;color:var(--brand-700)}
.tab-btn.active{background:var(--brand-600);color:#fff;box-shadow:var(--sh-md)}
@media(min-width:1024px){.tab-btn{width:100%;white-space:normal}}
.panels{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:28px}
@media(min-width:1024px){.panels{padding:36px}}
.panel{display:none;grid-template-columns:1fr;gap:28px}
.panel.active{display:grid}
@media(min-width:768px){.panel.active{grid-template-columns:1.25fr 1fr;align-items:center}}
.panel h3{font-size:22px;line-height:1.35}
.panel .panel-desc{margin-top:12px}
.panel ul{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.panel li{display:flex;gap:10px;font-size:15px}
.panel-media{border-radius:12px;overflow:hidden;aspect-ratio:4/3;background:#E9EFF8}
.panel-media img{width:100%;height:100%;object-fit:cover}

/* ============ 使用场景 ============ */
.scene{position:relative;display:grid;grid-template-columns:1fr;gap:26px;padding:32px 0;border-top:1px solid var(--line)}
.scene:first-of-type{border-top:0}
@media(min-width:1024px){.scene{grid-template-columns:1fr 1fr;gap:56px;padding:44px 0;align-items:center}}
.scene-media{position:relative;border-radius:16px;overflow:hidden;aspect-ratio:4/3;box-shadow:var(--sh-md);background:#E9EFF8}
.scene-media img{width:100%;height:100%;object-fit:cover}
.scene-index{
  position:absolute;left:14px;top:10px;font-size:clamp(40px,6vw,68px);font-weight:700;
  color:rgba(255,255,255,.9);text-shadow:0 2px 16px rgba(14,27,46,.35);font-variant-numeric:tabular-nums;line-height:1;
}
.scene-body h3{font-size:21px;line-height:1.4}
.scene-body p{margin-top:12px}
.scene-body ul{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.scene-body li{display:flex;gap:10px;font-size:15px}
@media(min-width:1024px){
  .scene.reverse .scene-media{order:2}
  .scene.reverse .scene-body{order:1}
}

/* ============ 数据带 + 案例 ============ */
.stat-band{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-banner);
  box-shadow:var(--sh-sm);display:grid;grid-template-columns:1fr 1fr;gap:0;overflow:hidden;
}
@media(min-width:768px){.stat-band{grid-template-columns:repeat(4,1fr)}}
.stat-cell{padding:24px 18px;text-align:center;border-top:1px solid var(--line)}
@media(min-width:768px){.stat-cell{border-top:0;border-left:1px solid var(--line)}.stat-cell:first-child{border-left:0}}
@media(max-width:767px){.stat-cell:nth-child(1),.stat-cell:nth-child(2){border-top:0}.stat-cell:nth-child(odd){border-right:1px solid var(--line)}}
.stat-cell strong{display:block;font-size:clamp(28px,4vw,40px);font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.15}
.stat-cell span{display:block;margin-top:6px;font-size:13px;color:var(--muted)}
.cases{display:grid;grid-template-columns:1fr;gap:24px;margin-top:32px}
@media(min-width:1024px){.cases{grid-template-columns:1fr 1fr}}
.case-card{display:grid;grid-template-columns:1fr;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);transition:box-shadow .2s ease-out,transform .2s ease-out}
.case-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px)}
@media(min-width:640px){.case-card{grid-template-columns:44% 56%}}
.case-img{overflow:hidden;background:#E9EFF8;min-height:180px}
.case-img img{width:100%;height:100%;object-fit:cover}
.case-body{padding:24px}
.case-quote{margin-top:14px;padding-left:14px;border-left:3px solid var(--brand-500);font-size:15px;color:var(--ink)}
.case-src{margin-top:16px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}

/* ============ 方案与报价 ============ */
.plans{display:grid;grid-template-columns:1fr;gap:22px;align-items:start}
@media(min-width:1024px){.plans{grid-template-columns:repeat(3,1fr);gap:24px}}
.plan{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:28px;transition:box-shadow .2s ease-out,transform .2s ease-out}
.plan:hover{box-shadow:var(--sh-md)}
.plan.featured{border:2px solid var(--brand-600);box-shadow:var(--sh-md)}
@media(min-width:1024px){.plan.featured{transform:translateY(-12px)}}
.plan-badge{position:absolute;top:-12px;left:28px;height:24px;padding:0 12px;border-radius:999px;background:var(--orange);color:#fff;font-size:13px;font-weight:600;display:inline-flex;align-items:center}
.plan h3{font-size:19px}
.plan-price{margin-top:14px;font-size:34px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.1}
.plan-price small{font-size:14px;font-weight:500;color:var(--muted);margin-left:6px}
.plan-desc{margin-top:10px;font-size:14px;color:var(--muted)}
.plan ul{margin:20px 0 24px;display:flex;flex-direction:column;gap:11px}
.plan li{display:flex;gap:10px;font-size:15px}
.plans-note{margin-top:22px;font-size:13px;color:var(--muted);text-align:center}

/* ============ 最新信息 ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.news-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{display:flex;flex-direction:column;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);transition:box-shadow .2s ease-out,transform .2s ease-out}
.news-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px)}
.news-cover{display:block;aspect-ratio:3/2;overflow:hidden;background:#E9EFF8}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out}
.news-card:hover .news-cover img{transform:scale(1.02)}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-bottom:12px}
.news-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a{color:var(--ink)}
.news-body h3 a:hover{color:var(--brand-600)}
.news-body p{margin-top:10px;font-size:14.5px;color:var(--text);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.empty-state{
  border:1px dashed var(--brand-500);border-radius:var(--r-card);background:#fff;
  min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  color:var(--muted);font-size:14.5px;text-align:center;padding:24px;grid-column:1/-1;
}
.empty-icon{width:36px;height:36px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;transition:border-color .2s ease-out,background .2s ease-out}
.faq-item.open{border-color:var(--brand-600);background:#FBFDFF}
.faq-q{
  width:100%;background:none;border:0;padding:20px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--ink);text-align:left;
}
.faq-icon{flex:none;width:24px;height:24px;border-radius:8px;background:var(--brand-50);color:var(--brand-600);display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;transition:transform .2s ease-out}
.faq-item.open .faq-icon{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease-out}
.faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--text)}
.faq-item.open .faq-a{max-height:420px}

/* ============ CTA 带 ============ */
.cta-band{background:var(--brand-50);border-radius:var(--r-banner);padding:32px 24px;display:grid;grid-template-columns:1fr;gap:22px;align-items:center}
@media(min-width:768px){.cta-band{padding:40px 48px;grid-template-columns:1fr auto}}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35}
.cta-band p{margin-top:10px;font-size:15.5px;color:var(--text);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-actions .btn-ghost{background:transparent}

/* ============ Footer ============ */
.site-footer{background:#0E1E3A;color:#C6D3E6;margin-top:56px}
@media(min-width:1024px){.site-footer{margin-top:96px}}
.footer-top{padding:56px 0 40px;display:grid;grid-template-columns:1fr;gap:34px}
@media(min-width:768px){.footer-top{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-top{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff}
.footer-brand .logo-mark{background:linear-gradient(135deg,#3C7BEA,#1B5FD9)}
.footer-brand .logo-text{color:#fff;font-size:18px}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.75;color:#C6D3E6;max-width:300px}
.footer-status{display:inline-flex;align-items:center;gap:8px;margin-top:16px;height:24px;padding:0 12px;border-radius:999px;background:rgba(15,169,140,.18);color:#5FE0C4;font-size:13px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a,.footer-contact span{font-size:14px;color:#C6D3E6}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:2px}
.footer-contact{display:flex;flex-direction:column;gap:11px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.16);padding:18px 0 24px;display:flex;flex-direction:column;gap:8px;font-size:13px;color:#9FB2CC}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}
.footer-bottom a{color:#C6D3E6}
.footer-bottom a:hover{color:#fff}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}

/* roulang page: category1 */
:root{
  --brand-600:#1B5FD9;
  --brand-700:#12429E;
  --brand-500:#3C7BEA;
  --brand-50:#EAF1FD;
  --teal:#0FA98C;
  --orange:#F5822B;
  --title:#0E1B2E;
  --text:#465A75;
  --muted:#7A8AA1;
  --line:#E4EAF3;
  --page:#F4F7FB;
  --card:#FFFFFF;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --r-img:14px;
  --sh-sm:0 1px 2px rgba(14,27,46,.06);
  --sh-md:0 6px 20px rgba(20,45,90,.08);
  --sh-lg:0 16px 40px rgba(20,45,90,.10);
  --font:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--page);
}
h1,h2,h3,h4{margin:0;color:var(--title);letter-spacing:0;line-height:1.3}
h1{font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.22}
h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3}
h3{font-size:20px;font-weight:600}
h4{font-size:16px;font-weight:600}
p{margin:0 0 1.2em}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out}
a:hover{color:var(--brand-700)}
img{max-width:100%;display:block}
button{font-family:inherit}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}
.tabular{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:640px){.container{padding:0 28px}}
@media (min-width:1024px){.container{padding:0 32px}}
body.no-scroll{overflow:hidden}

/* ---------- 顶部状态条 ---------- */
.topbar{background:#0E1B2E;color:#D7E2F3;font-size:13px;line-height:1}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:34px;padding-top:6px;padding-bottom:6px}
.topbar-left{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.countdown{color:#E6EEFA}
.countdown b{color:#fff;font-weight:700;margin-left:4px}
.topbar-link{color:#B7C7E0;font-size:13px}
.topbar-link:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
@media (max-width:639px){.topbar-link{display:none}}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60}
.navbar{background:var(--card);border-bottom:1px solid var(--line);box-shadow:var(--sh-sm)}
.navbar-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--title)}
.brand:hover{color:var(--title)}
.logo-mark{
  width:28px;height:28px;border-radius:8px;flex:0 0 28px;
  background:var(--brand-600);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;
}
.brand-text{font-size:19px;font-weight:700;letter-spacing:0;white-space:nowrap}
.brand-dot{
  width:8px;height:8px;border-radius:50%;background:var(--teal);margin-left:2px;
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.82)}}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-links a{
  position:relative;color:var(--text);font-size:15px;font-weight:500;padding:6px 0;
}
.nav-links a:hover{color:var(--brand-600)}
.nav-links a.active{color:var(--brand-600);font-weight:600}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--brand-600);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-toggle{
  margin-left:auto;display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;
  border-radius:var(--r-btn);cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--title);transition:transform .2s ease-out,opacity .2s ease-out}
.nav-toggle:hover{border-color:var(--brand-500);box-shadow:var(--sh-sm)}

/* ---------- 按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--brand-700);color:#fff;box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-sm)}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-700)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;box-shadow:none}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;
  font-size:13px;line-height:1;font-weight:600;white-space:nowrap;
}
.badge-soft{background:var(--brand-50);color:var(--brand-600)}
.badge-live{background:var(--teal);color:#fff}
.badge-hot{background:var(--orange);color:#fff}
.status-dot{width:7px;height:7px;border-radius:50%;background:#fff;display:inline-block;animation:pulse 2.4s ease-in-out infinite}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,27,46,.45);z-index:70;opacity:0;transition:opacity .2s ease-out;
}
.drawer-mask.is-open{opacity:1}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:82vw;background:#fff;z-index:80;
  transform:translateX(100%);transition:transform .24s ease-out;padding:22px;overflow-y:auto;
  box-shadow:var(--sh-lg);display:flex;flex-direction:column;gap:18px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-status{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.drawer nav{display:flex;flex-direction:column;gap:4px}
.drawer nav a{padding:12px 12px;border-radius:10px;color:var(--text);font-size:15px;font-weight:500}
.drawer nav a:hover{background:var(--brand-50);color:var(--brand-600)}
.drawer nav a.active{background:var(--brand-50);color:var(--brand-600);font-weight:700}
.drawer .btn{width:100%}

/* ---------- 主内容通用 ---------- */
main{display:block}
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-head{max-width:760px;margin-bottom:32px}
.section-head p{margin-top:12px;color:var(--text)}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--brand-600);background:var(--brand-50);padding:4px 10px;border-radius:999px;margin-bottom:14px}

/* ---------- 页头横幅 ---------- */
.page-hero{
  background:
    repeating-linear-gradient(90deg,rgba(27,95,217,.05) 0 1px,transparent 1px 32px),
    linear-gradient(180deg,#F2F7FF 0%,#FAFCFF 100%);
  border-bottom:1px solid var(--line);
  padding:34px 0 42px;
}
.page-hero-inner{display:grid;grid-template-columns:1.35fr 1fr;gap:40px;align-items:center}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:14px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb [aria-current]{color:var(--text)}
.page-hero h1{max-width:640px}
.page-hero .lead{margin:16px 0 0;font-size:16px;max-width:600px}
.page-hero-media{
  border-radius:16px;overflow:hidden;box-shadow:var(--sh-lg);background:#E9EFF8;aspect-ratio:16/10;
}
.page-hero-media img{width:100%;height:100%;object-fit:cover}

/* ---------- 定义段 ---------- */
.definition{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.definition p{margin:0}
.fact-strip{
  margin-top:32px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);display:grid;grid-template-columns:repeat(3,1fr);
}
.fact-strip div{padding:20px 24px;border-right:1px solid var(--line)}
.fact-strip div:last-child{border-right:none}
.fact-strip strong{display:block;color:var(--title);font-size:17px;font-weight:600;margin-bottom:4px}
.fact-strip span{font-size:13px;color:var(--muted)}

/* ---------- 步骤 ---------- */
.steps{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-sm);padding:8px 0}
.step{display:flex;gap:18px;padding:22px 28px;border-bottom:1px solid var(--line)}
.step:last-child{border-bottom:none}
.step-num{
  flex:0 0 40px;width:40px;height:40px;border-radius:50%;background:var(--brand-50);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
}
.step h3{margin-bottom:6px}
.step p{margin:0;font-size:15px}

/* ---------- 对照表 ---------- */
.table-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden}
.compare-table{width:100%;border-collapse:collapse;font-size:14px}
.compare-table thead th{
  background:var(--brand-50);color:var(--brand-700);font-weight:700;text-align:left;
  padding:12px 18px;font-size:13px;white-space:nowrap;
}
.compare-table tbody tr:nth-child(even){background:#FAFCFF}
.compare-table td{padding:12px 18px;height:44px;border-top:1px solid var(--line);vertical-align:top;color:var(--text)}
.compare-table td:first-child{color:var(--title);font-weight:600}
.table-note{font-size:13px;color:var(--muted);margin:12px 0 0}

/* ---------- 错位要点卡 ---------- */
.highlight-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:start}
.highlight-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);
  padding:28px;transition:box-shadow .2s ease-out,transform .2s ease-out;
}
.highlight-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px)}
.highlight-card.offset{margin-top:28px}
.highlight-card img{border-radius:12px;aspect-ratio:16/9;object-fit:cover;margin-bottom:20px}
.highlight-card h3{margin-bottom:12px}
.check-list li{position:relative;padding-left:26px;margin-bottom:10px;font-size:15px}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:4px;background:var(--brand-50);
  border:1px solid rgba(27,95,217,.28);
}
.check-list li::after{
  content:"";position:absolute;left:4px;top:13px;width:6px;height:3px;border-left:2px solid var(--brand-600);
  border-bottom:2px solid var(--brand-600);transform:rotate(-45deg);
}
.mini-list li{border-top:1px dashed var(--line);padding:12px 0;font-size:15px}
.mini-list li:first-child{border-top:none;padding-top:0}
.mini-list strong{color:var(--title);display:block;margin-bottom:2px}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.faq-item[open]{border-color:var(--brand-600);background:#FBFDFF;box-shadow:var(--sh-md)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--title);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px}
.faq-icon i{position:absolute;left:0;top:8px;width:18px;height:2px;background:var(--brand-600);border-radius:2px}
.faq-icon i+i{transform:rotate(90deg);transition:transform .2s ease-out}
.faq-item[open] .faq-icon i+i{transform:rotate(0deg)}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--text)}
.faq-body p{margin:0}

/* ---------- CTA 带 ---------- */
.cta-band-wrap{padding:0 0 56px}
@media (min-width:1024px){.cta-band-wrap{padding:0 0 96px}}
.cta-band{
  background:var(--brand-50);border-radius:var(--r-lg);padding:40px 32px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px)}
.cta-band p{margin:10px 0 0;max-width:560px;color:var(--text)}
@media (min-width:1024px){.cta-band{padding:48px 48px}}

/* ---------- 页脚 ---------- */
.site-footer{background:#0E1E3A;color:#C6D3E6;padding:56px 0 0;margin-top:0}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .logo-text{color:#fff;font-size:18px;font-weight:700}
.footer-desc{font-size:14px;color:#A9BBD6;margin:0 0 16px;max-width:320px}
.footer-status{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#C6D3E6;background:rgba(15,169,140,.16);border:1px solid rgba(15,169,140,.4);padding:4px 12px;border-radius:999px}
.footer-status .status-dot{background:var(--teal)}
.footer-top h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:#C6D3E6;font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:#C6D3E6}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding-top:20px;padding-bottom:24px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#9FB2CE;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:flex}
  .page-hero-inner{grid-template-columns:1fr;gap:28px}
  .page-hero-media{aspect-ratio:16/9}
  .definition{grid-template-columns:1fr;gap:20px}
  .highlight-grid{grid-template-columns:1fr}
  .highlight-card.offset{margin-top:0}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .fact-strip{grid-template-columns:1fr}
  .fact-strip div{border-right:none;border-bottom:1px solid var(--line)}
  .fact-strip div:last-child{border-bottom:none}
  .step{padding:20px}
  .step{gap:14px}
}
@media (max-width:639px){
  .compare-table thead{display:none}
  .compare-table,.compare-table tbody,.compare-table tr,.compare-table td{display:block;width:100%}
  .compare-table tr{border-top:1px solid var(--line);padding:6px 0}
  .compare-table tr:first-child{border-top:none}
  .compare-table td{border-top:none;height:auto;padding:8px 18px;display:flex;gap:14px}
  .compare-table td::before{
    content:attr(data-label);flex:0 0 76px;color:var(--muted);font-weight:600;font-size:13px;
  }
  .footer-top{grid-template-columns:1fr}
  .cta-band{padding:28px 20px}
  .highlight-card{padding:20px}
  .brand-text{font-size:17px}
}

/* roulang page: article */
:root{
  --brand-600:#1B5FD9;
  --brand-700:#12429E;
  --brand-500:#3C7BEA;
  --brand-50:#EAF1FD;
  --teal:#0FA98C;
  --warm:#F5822B;
  --ink:#0E1B2E;
  --text:#465A75;
  --muted:#7A8AA1;
  --line:#E4EAF3;
  --page:#F4F7FB;
  --card:#FFFFFF;
  --footer-bg:#0E1E3A;
  --footer-text:#C6D3E6;
  --r-card:14px;
  --r-banner:20px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(14,27,46,.06);
  --sh-md:0 6px 20px rgba(20,45,90,.08);
  --sh-lg:0 16px 40px rgba(20,45,90,.10);
  --font: "Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--page);
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding-left:1.15em}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--brand-700)}
img{max-width:100%;display:block}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:640px){.container{padding:0 28px}}
@media (min-width:1024px){.container{padding:0 32px}}
.num{font-variant-numeric:tabular-nums}

/* ---------- topbar ---------- */
.topbar{background:var(--footer-bg);color:#fff;font-size:13px;height:36px;display:flex;align-items:center}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.topbar-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(15,169,140,.18);color:#8FE7D6;border-radius:999px;padding:3px 10px;font-size:12px;white-space:nowrap}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--teal);display:inline-block;animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.85)}}
.topbar-text{color:#C6D3E6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.countdown{color:var(--warm);font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:.4px}
.topbar-right a{color:#C6D3E6;font-size:13px}
.topbar-right a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
@media (max-width:767px){.topbar-right{display:none}}

/* ---------- nav ---------- */
.site-header{position:sticky;top:0;z-index:60}
.navbar{background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-sm)}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:28px;height:28px;border-radius:8px;background:var(--brand-600);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
}
.logo-text{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:0}
.logo-ping{width:7px;height:7px;border-radius:50%;background:var(--teal);margin-left:2px;animation:pulse 2.4s ease-in-out infinite}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-menu a{font-size:15px;color:var(--text);padding:6px 0;position:relative}
.nav-menu a:hover{color:var(--brand-600)}
.nav-menu a.is-active{color:var(--brand-600);font-weight:600}
.nav-menu a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand-600);border-radius:2px}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:13px;line-height:1;white-space:nowrap}
.badge-soft{background:var(--brand-50);color:var(--brand-600)}
.badge-teal{background:var(--teal);color:#fff}
.badge-warm{background:var(--warm);color:#fff}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .2s ease-out;white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-700);color:#fff;box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;border-color:var(--brand-600);color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600}
.link-arrow span{transition:transform .2s ease-out}
.link-arrow:hover span{transform:translateX(2px)}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:10px;
  cursor:pointer;padding:0;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-actions .badge{display:none}
  .nav-actions .btn-primary{display:none}
  .nav-toggle{display:inline-flex}
  .nav-inner{height:62px;gap:14px}
  .logo-text{font-size:17px}
}
/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(14,27,46,.45);opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s;z-index:80}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:88vw;background:#fff;z-index:90;
  transform:translateX(100%);transition:transform .24s ease-out;padding:22px 20px;display:flex;flex-direction:column;gap:18px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:18px;color:var(--text);line-height:1}
.drawer-count{background:var(--brand-50);border-radius:12px;padding:12px 14px;font-size:13px;color:var(--text)}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{padding:11px 12px;border-radius:10px;font-size:15px;color:var(--ink)}
.drawer-nav a:hover{background:var(--brand-50);color:var(--brand-700)}
.drawer-nav a.is-active{background:var(--brand-50);color:var(--brand-600);font-weight:600}
.drawer .btn{width:100%}

/* ---------- breadcrumb ---------- */
.crumb{padding:18px 0 0}
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;font-size:13px;color:var(--muted)}
.crumb li::after{content:"›";margin-left:8px;color:#B8C4D6}
.crumb li:last-child::after{content:"";margin:0}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand-600)}
.crumb .current{color:var(--text)}

/* ---------- article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;padding:20px 0 72px;align-items:start}
@media (max-width:1023px){.article-layout{grid-template-columns:1fr;gap:28px;padding-bottom:56px}}
.article-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-banner);box-shadow:var(--sh-sm);padding:40px}
@media (max-width:767px){.article-card{padding:24px 20px;border-radius:var(--r-card)}}
.article-card h1{font-size:clamp(28px,3.2vw,36px);line-height:1.35;font-weight:700;color:var(--ink);letter-spacing:0}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.meta-row .sep{color:#CBD5E5}
.article-hero-img{margin-top:26px;border-radius:var(--r-card);overflow:hidden;background:#EEF3FA}
.article-hero-img img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-body{margin-top:30px;font-size:17px;line-height:1.85;color:var(--text)}
.article-body > * + *{margin-top:1.2em}
.article-body h2{font-size:24px;font-weight:700;color:var(--ink);line-height:1.4;padding-left:14px;position:relative;margin-top:2em}
.article-body h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:3px;background:var(--brand-600)}
.article-body h3{font-size:20px;font-weight:600;color:var(--ink);line-height:1.5;margin-top:1.6em}
.article-body p{margin:0}
.article-body ul{list-style:none;padding-left:0}
.article-body ul li{position:relative;padding-left:22px;margin-top:.5em}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--brand-500)}
.article-body ol{padding-left:22px}
.article-body ol li{margin-top:.5em}
.article-body blockquote{
  background:var(--brand-50);border-left:3px solid var(--brand-600);border-radius:8px;
  padding:16px 20px;color:var(--brand-700);font-size:16px;
}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-700)}
.article-body img{border-radius:12px;margin-bottom:14px;width:100%;object-fit:cover}
.article-body figure figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:-6px}
.article-body strong{color:var(--ink)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:var(--brand-50);color:var(--ink)}
@media (max-width:639px){
  .article-body table,.article-body tbody,.article-body tr,.article-body td,.article-body th{display:block;width:100%}
  .article-body thead{display:none}
  .article-body tr{border:1px solid var(--line);border-radius:12px;padding:8px 10px;margin-bottom:12px;background:#fff}
  .article-body td{border:0;padding:4px 0}
}
.article-empty{
  border:1px dashed var(--brand-500);border-radius:var(--r-card);min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;padding:32px 20px;
  background:#FBFDFF;margin-top:26px;
}
.article-empty-icon{width:44px;height:44px;border-radius:50%;background:var(--brand-50);color:var(--brand-600);display:flex;align-items:center;justify-content:center;font-size:20px}
.article-empty-title{font-size:17px;font-weight:600;color:var(--ink)}
.article-empty-text{font-size:14px;color:var(--muted);max-width:420px}

/* tags + pager */
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;background:var(--page);color:var(--text);font-size:13px}
.tag:hover{background:var(--brand-50);color:var(--brand-600)}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
@media (max-width:639px){.pager{grid-template-columns:1fr}}
.pager-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:18px 20px;
  box-shadow:var(--sh-sm);transition:all .2s ease-out;
}
.pager-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:#D3E0F5}
.pager-card .kicker{font-size:13px;color:var(--muted)}
.pager-card .name{font-size:16px;font-weight:600;color:var(--ink);margin-top:6px}
.back-cate{margin-top:22px;font-size:14px}

/* ---------- side ---------- */
.side{display:flex;flex-direction:column;gap:20px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-sm)}
.side-card h3{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:14px}
.side-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:12px}
.side-list li a{display:block;font-size:14px;color:var(--text);line-height:1.6}
.side-list li a:hover{color:var(--brand-600)}
.side-list li span{display:block;font-size:12px;color:var(--muted);margin-top:4px;font-variant-numeric:tabular-nums}
.side-cta{background:var(--brand-50);border:1px solid #D6E4FA;border-radius:var(--r-card);padding:22px}
.side-cta h3{font-size:17px;font-weight:600;color:var(--ink)}
.side-cta p{font-size:14px;color:var(--text);margin-top:8px;line-height:1.7}
.side-cta .btn{width:100%;margin-top:16px}

/* ---------- related ---------- */
.related{padding:0 0 72px}
@media (max-width:767px){.related{padding-bottom:56px}}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px}
.sec-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;color:var(--ink)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1023px){.grid-3{grid-template-columns:repeat(2,1fr);gap:20px}}
@media (max-width:639px){.grid-3{grid-template-columns:1fr;gap:16px}}
.card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-sm);transition:all .2s ease-out;
}
.card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:#D3E0F5}
.card-cover{aspect-ratio:3/2;background:#EEF3FA;overflow:hidden}
.card-cover img{width:100%;height:100%;object-fit:cover}
.card-body{padding:20px}
.card-body .badge{margin-bottom:10px}
.card-title{font-size:16px;font-weight:600;color:var(--ink);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-text{font-size:14px;color:var(--text);margin-top:8px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;justify-content:space-between;margin-top:14px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand-50);border-radius:var(--r-banner);padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:28px;margin-bottom:72px}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--ink);line-height:1.35}
.cta-band p{font-size:15px;color:var(--text);margin-top:8px;max-width:560px}
@media (max-width:767px){.cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px;margin-bottom:56px}}

/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg);color:var(--footer-text);margin-top:0}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-top:56px;padding-bottom:40px}
@media (max-width:1023px){.footer-top{grid-template-columns:1fr 1fr;gap:28px;padding-top:44px}}
@media (max-width:639px){.footer-top{grid-template-columns:1fr;padding-top:36px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .logo-text{color:#fff;font-size:18px}
.footer-desc{font-size:14px;color:#9FB2CE;line-height:1.75;max-width:320px}
.footer-status{display:inline-flex;align-items:center;gap:7px;margin-top:16px;font-size:13px;color:#8FE7D6;background:rgba(15,169,140,.16);border-radius:999px;padding:5px 12px}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--footer-text)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:var(--footer-text);font-variant-numeric:tabular-nums}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.14);padding-top:20px;padding-bottom:26px;font-size:13px;color:#93A7C4;
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}

/* roulang page: category2 */
:root{
  --brand-600:#1B5FD9;
  --brand-700:#12429E;
  --brand-500:#3C7BEA;
  --brand-50:#EAF1FD;
  --teal:#0FA98C;
  --orange:#F5822B;
  --ink:#0E1B2E;
  --text:#465A75;
  --muted:#7A8AA1;
  --line:#E4EAF3;
  --bg:#F4F7FB;
  --surface:#FFFFFF;
  --skeleton-a:#EEF3FA;
  --skeleton-b:#F7FAFE;
  --r-card:14px;
  --r-banner:20px;
  --r-btn:10px;
  --r-img:16px;
  --sh-sm:0 1px 2px rgba(14,27,46,.06);
  --sh-md:0 6px 20px rgba(20,45,90,.08);
  --sh-lg:0 16px 40px rgba(20,45,90,.10);
  --sp-section:96px;
  --font:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--brand-700)}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.22}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3}
h3{font-size:21px;line-height:1.4;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:640px){.container{padding:0 28px}}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- 顶部状态条 ---------- */
.topbar{background:#0E1E3A;color:#D8E2F2;font-size:13px;line-height:1;min-height:34px;display:flex;align-items:center}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:34px}
.topbar-left{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.status-pill{display:inline-flex;align-items:center;gap:6px;background:rgba(15,169,140,.16);color:#7FE3D0;border-radius:999px;padding:5px 10px;font-size:12px;font-weight:500}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 3px rgba(15,169,140,.2);display:inline-block}
.topbar-count{color:#C6D3E6;font-variant-numeric:tabular-nums;display:inline-flex;align-items:center;gap:4px}
.topbar-count .num{color:var(--orange);font-weight:600}
.topbar-link{display:inline-flex;align-items:center;gap:5px;color:#C6D3E6;font-size:13px}
.topbar-link:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.topbar-link svg{width:13px;height:13px}
@media (max-width:767px){.topbar-link{display:none}}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff}
.navbar{background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 2px rgba(14,27,46,.03)}
.navbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink)}
.logo:hover{color:var(--ink)}
.logo-mark{
  width:28px;height:28px;border-radius:8px;background:var(--brand-600);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;flex:0 0 28px;
}
.logo-text{font-size:19px;font-weight:700;line-height:1;position:relative;padding-left:12px}
.logo-text em{font-style:normal;color:var(--brand-600)}
.logo-text::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--teal);
  animation:breathe 2.4s ease-in-out infinite;
}
@keyframes breathe{0%,100%{opacity:1;transform:translateY(-50%) scale(1)}50%{opacity:.45;transform:translateY(-50%) scale(.82)}}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{
  position:relative;color:var(--text);font-size:15px;font-weight:500;padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:center;transition:transform .2s ease-out;
}
.nav-links a:hover{color:var(--brand-700)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand-600);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:14px}
.badge{display:inline-flex;align-items:center;gap:5px;height:24px;padding:0 10px;border-radius:999px;font-size:13px;font-weight:500;white-space:nowrap}
.badge-brand{background:var(--brand-50);color:var(--brand-600)}
.badge-teal{background:var(--teal);color:#fff}
.badge-orange{background:var(--orange);color:#fff}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-btn);border:1px solid var(--line);
  align-items:center;justify-content:center;background:#fff;
}
.menu-toggle:hover{background:var(--brand-50);border-color:var(--brand-500)}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;
  transition:background-color .2s ease-out,color .2s ease-out,box-shadow .2s ease-out,transform .15s ease-out,border-color .2s ease-out;
  border:1px solid transparent;white-space:nowrap;
}
.btn svg{width:15px;height:15px;flex:0 0 15px;transition:transform .2s ease-out}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--brand-700);color:#fff;box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-sm)}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;box-shadow:none}
.btn:disabled:hover{background:var(--brand-600)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand-600)}
.link-arrow svg{width:14px;height:14px;transition:transform .2s ease-out}
.link-arrow:hover svg{transform:translateX(2px)}

/* ---------- 移动端抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,27,46,.45);opacity:0;visibility:hidden;
  transition:opacity .22s ease-out,visibility .22s ease-out;z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:300px;max-width:86vw;background:#fff;z-index:90;
  transform:translateX(102%);transition:transform .24s ease-out;display:flex;flex-direction:column;
  padding:20px;overflow-y:auto;box-shadow:var(--sh-lg);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--muted)}
.drawer-close:hover{background:var(--brand-50);color:var(--brand-600)}
.drawer-status{margin-top:16px;background:var(--brand-50);border-radius:var(--r-card);padding:12px 14px;font-size:13px;color:var(--brand-700);display:flex;align-items:center;justify-content:space-between;gap:10px}
.drawer-nav{margin-top:18px;display:flex;flex-direction:column;gap:4px}
.drawer-nav a{padding:12px 12px;border-radius:var(--r-btn);color:var(--text);font-size:15px;font-weight:500}
.drawer-nav a:hover{background:var(--brand-50);color:var(--brand-700)}
.drawer-nav a.active{background:var(--brand-50);color:var(--brand-600);font-weight:600}
.drawer-cta{margin-top:auto;padding-top:20px}

/* ---------- 页面骨架 ---------- */
.section{padding:var(--sp-section) 0}
.section-tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head p{margin-top:14px;color:var(--text);font-size:16px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-600);letter-spacing:.04em}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--brand-600)}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);flex-wrap:wrap}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:#C3CEDF}
.breadcrumb .current{color:var(--text)}

/* ---------- Hero 双列横幅 ---------- */
.hero{background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 72%);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(27,95,217,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(27,95,217,.045) 1px,transparent 1px);
  background-size:56px 56px;pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1fr;gap:36px;align-items:center;padding:56px 0 64px}
.hero-copy h1{margin:18px 0 0}
.hero-lead{margin-top:18px;font-size:17px;line-height:1.8;color:var(--text);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-media{position:relative}
.hero-media .media{border-radius:var(--r-img);box-shadow:var(--sh-lg);overflow:hidden}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:1fr 1fr;gap:56px;padding:72px 0 80px}
}

/* ---------- 图片容器 ---------- */
.media{position:relative;background:var(--skeleton-a);overflow:hidden}
.media::after{
  content:"图片暂不可用";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-size:13px;color:var(--muted);background:var(--skeleton-a);
}
.media img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover;display:block}
.ratio-16x10{aspect-ratio:16/10}
.ratio-4x3{aspect-ratio:4/3}
.ratio-3x2{aspect-ratio:3/2}
.ratio-1x1{aspect-ratio:1/1}

/* ---------- 数据带 ---------- */
.stats-band{background:#fff;border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:1fr;gap:0}
.stat{padding:26px 20px;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:6px}
.stat:last-child{border-bottom:0}
.stat-value{font-size:clamp(28px,4vw,40px);font-weight:700;color:var(--ink);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-value small{font-size:16px;font-weight:600;color:var(--brand-600);margin-left:4px}
.stat-label{font-size:13px;color:var(--muted)}
@media (min-width:640px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat{border-bottom:0;border-right:1px solid var(--line);padding:32px 24px}
  .stat:nth-child(2n){border-right:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
}
@media (min-width:1024px){
  .stats-grid{grid-template-columns:repeat(4,1fr)}
  .stat{border-top:0 !important;border-right:1px solid var(--line);padding:36px 28px}
  .stat:nth-child(2n){border-right:1px solid var(--line)}
  .stat:last-child{border-right:0}
}

/* ---------- 现象速查卡 ---------- */
.symptom-grid{display:grid;grid-template-columns:1fr;gap:16px}
.symptom{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
  box-shadow:var(--sh-sm);transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.symptom:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:#D6E2F6}
.symptom .sym-icon{
  width:38px;height:38px;border-radius:10px;background:var(--brand-50);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.symptom .sym-icon svg{width:19px;height:19px}
.symptom h3{font-size:17px;margin-bottom:8px}
.symptom p{font-size:14.5px;color:var(--text);line-height:1.7}
@media (min-width:640px){.symptom-grid{grid-template-columns:repeat(2,1fr);gap:18px}}
@media (min-width:1024px){.symptom-grid{grid-template-columns:repeat(4,1fr)}}

/* ---------- 分组卡片 ---------- */
.group-list{display:flex;flex-direction:column;gap:24px}
.group-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-banner);box-shadow:var(--sh-sm);
  padding:26px;display:grid;grid-template-columns:1fr;gap:22px;
  transition:box-shadow .2s ease-out,border-color .2s ease-out;
}
.group-card:hover{box-shadow:var(--sh-md);border-color:#D6E2F6}
.group-head{display:flex;align-items:flex-start;gap:14px}
.group-icon{
  width:46px;height:46px;flex:0 0 46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-50);color:var(--brand-600);
}
.group-icon.teal{background:rgba(15,169,140,.12);color:var(--teal)}
.group-icon.blue-deep{background:rgba(27,95,217,.1);color:var(--brand-700)}
.group-icon svg{width:22px;height:22px}
.group-head h3{font-size:20px}
.group-no{font-size:13px;font-weight:600;color:var(--muted);font-variant-numeric:tabular-nums;letter-spacing:.06em}
.group-body p{margin-top:10px;font-size:15.5px;color:var(--text)}
.point-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.point-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text);line-height:1.7}
.point-list li::before{
  content:"";flex:0 0 16px;width:16px;height:16px;margin-top:5px;border-radius:5px;background:var(--brand-50);
  border:1px solid rgba(27,95,217,.22);
  background-image:linear-gradient(45deg,transparent 46%,var(--brand-600) 46%,var(--brand-600) 54%,transparent 54%),
                   linear-gradient(-45deg,transparent 46%,var(--brand-600) 46%,var(--brand-600) 54%,transparent 54%);
  background-size:8px 8px;background-position:center;background-repeat:no-repeat;
}
.group-media .media{border-radius:var(--r-img);box-shadow:var(--sh-sm)}
@media (min-width:768px){
  .group-card{padding:30px}
  .group-card.has-media{grid-template-columns:1.35fr 1fr;align-items:center}
}
@media (min-width:1024px){.group-card{padding:34px}}

/* ---------- 时间线 ---------- */
.timeline-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-banner);padding:28px;box-shadow:var(--sh-sm)}
.timeline{position:relative;padding-left:34px}
.timeline::before{
  content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;background:var(--line);border-radius:2px;
}
.tl-item{position:relative;padding-bottom:28px}
.tl-item:last-child{padding-bottom:0}
.tl-node{
  position:absolute;left:-34px;top:6px;width:10px;height:10px;border-radius:50%;
  background:var(--brand-600);border:2px solid #fff;box-shadow:0 0 0 2px rgba(27,95,217,.18);
}
.tl-item.is-current .tl-node{box-shadow:0 0 0 6px rgba(27,95,217,.14);background:var(--brand-700)}
.tl-item h3{font-size:17.5px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tl-step{
  font-size:12px;font-weight:600;color:var(--brand-600);background:var(--brand-50);
  border-radius:999px;padding:3px 9px;font-variant-numeric:tabular-nums;
}
.tl-item p{margin-top:8px;font-size:15px;color:var(--text)}
.timeline-side{background:var(--brand-50);border-radius:var(--r-card);padding:22px;margin-top:26px}
.timeline-side h3{font-size:17px;margin-bottom:10px}
.timeline-side ul{display:flex;flex-direction:column;gap:9px}
.timeline-side li{font-size:14px;color:var(--brand-700);display:flex;gap:8px}
.timeline-side li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand-500);margin-top:9px;flex:0 0 5px}
@media (min-width:1024px){
  .timeline-layout{display:grid;grid-template-columns:1.6fr 1fr;gap:30px;align-items:start}
  .timeline-side{margin-top:0}
}

/* ---------- 安全提示（带图区块） ---------- */
.security{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.security-inner{display:grid;grid-template-columns:1fr;gap:30px;align-items:center}
.security-inner .media{border-radius:var(--r-img);box-shadow:var(--sh-md)}
.security h2{margin-bottom:16px}
.security p{font-size:15.5px;color:var(--text)}
.security-list{margin-top:20px;display:grid;grid-template-columns:1fr;gap:14px}
.security-list li{display:flex;gap:12px;font-size:14.5px;color:var(--text)}
.security-list .dot{
  width:26px;height:26px;flex:0 0 26px;border-radius:8px;background:rgba(15,169,140,.12);color:var(--teal);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
@media (min-width:768px){.security-list{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.security-inner{grid-template-columns:1fr 1fr;gap:56px}}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:860px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);
  transition:border-color .2s ease-out,background-color .2s ease-out,box-shadow .2s ease-out;
}
.faq-item:hover{border-color:#D6E2F6}
.faq-item[open]{border-color:var(--brand-600);background:#FBFDFF;box-shadow:var(--sh-md)}
.faq-q{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;cursor:pointer;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-q::-webkit-details-marker{display:none}
.faq-icon{
  position:relative;width:22px;height:22px;flex:0 0 22px;border-radius:50%;background:var(--brand-50);
  transition:background-color .2s ease-out;
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px}
.faq-icon::before{left:6px;right:6px;top:10px;height:2px}
.faq-icon::after{top:6px;bottom:6px;left:10px;width:2px;transition:transform .2s ease-out}
.faq-item[open] .faq-icon{background:var(--brand-600)}
.faq-item[open] .faq-icon::before{background:#fff}
.faq-item[open] .faq-icon::after{transform:scaleY(0);background:#fff}
.faq-a{padding:0 20px 20px;font-size:15px;color:var(--text);line-height:1.8}
.faq-a p+p{margin-top:10px}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--brand-50);border-radius:var(--r-banner);padding:32px 24px;display:grid;grid-template-columns:1fr;gap:22px;align-items:center}
.cta-band h2{font-size:clamp(22px,2.6vw,30px)}
.cta-band p{margin-top:10px;font-size:15.5px;color:var(--brand-700)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (min-width:768px){.cta-band{padding:40px 44px;grid-template-columns:1.4fr auto;gap:32px}}
@media (min-width:1024px){.cta-band{padding:48px}}

/* ---------- 页脚 ---------- */
.site-footer{background:#0E1E3A;color:#C6D3E6;margin-top:0}
.footer-top{
  display:grid;grid-template-columns:1fr;gap:34px;padding-top:62px;padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .logo-mark{background:var(--brand-600)}
.footer-brand .logo-text{color:#fff;padding-left:0}
.footer-brand .logo-text::before{display:none}
.footer-desc{margin-top:14px;font-size:14px;color:#A9BAD2;max-width:320px;line-height:1.75}
.footer-status{
  display:inline-flex;align-items:center;gap:7px;margin-top:16px;font-size:13px;color:#7FE3D0;
  background:rgba(15,169,140,.14);border-radius:999px;padding:6px 12px;
}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:#C6D3E6;font-size:14px;position:relative;width:fit-content}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:#C6D3E6}
.footer-bottom{
  display:flex;flex-direction:column;gap:10px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.14);padding-top:20px;padding-bottom:30px;
  font-size:13px;color:#8FA2BE;
}
@media (min-width:768px){
  .footer-top{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:1024px){
  .footer-top{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
  .footer-bottom{flex-direction:row;align-items:center;gap:24px}
}

/* ---------- 响应式导航 ---------- */
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-right .badge{display:none}
  .nav-right .btn-primary{display:none}
  .menu-toggle{display:flex}
}
@media (min-width:1024px){
  .drawer,.drawer-mask{display:none}
}
@media (max-width:639px){
  :root{--sp-section:56px}
  .section{padding:var(--sp-section) 0}
  .hero-inner{padding:36px 0 48px}
  .card{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}