/* roulang page: index */
:root{
  --color-primary:#00C2A8;
  --color-secondary:#1A2A3A;
  --color-accent:#F59E0B;
  --color-surface:#F6F7F8;
  --color-card:#FFFFFF;
  --color-text:#0F172A;
  --color-text-soft:#536878;
  --color-border:#DCE2E8;
  --radius-card:8px;
  --radius-btn:4px;
  --shadow-card:0 1px 4px rgba(15,23,42,.05);
  --shadow-hover:0 8px 24px rgba(15,23,42,.12);
}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--color-text);
  background-color:var(--color-surface);
  -webkit-font-smoothing:antialiased;
}
*,*::before,*::after{box-sizing:border-box}
img{max-width:100%;display:block}
a{color:var(--color-primary);text-decoration:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}
.container{max-width:1152px;margin-left:auto;margin-right:auto;padding-left:16px;padding-right:16px}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px}}

/* ===== Header / Nav ===== */
.site-header{
  background:#141E2B;
  border-bottom:1px solid rgba(255,255,255,.08);
  position:sticky;top:0;z-index:100;
  height:72px;
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;gap:16px;
  position:relative;
}
.brand-logo{
  display:flex;align-items:center;gap:10px;
  font-size:20px;font-weight:700;color:#fff;
  letter-spacing:.5px;white-space:nowrap;
}
.logo-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--color-primary);
  animation:logoPulse 2s infinite;
}
@keyframes logoPulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.25)}}
.nav-left,.nav-right{display:flex;align-items:center;gap:6px}
.nav-link{
  color:rgba(255,255,255,.85);font-size:14px;
  padding:8px 14px;border-radius:4px;
  position:relative;transition:color .2s,background .2s;
  white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-link.active{color:#fff}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;background:var(--color-primary);border-radius:2px;
}
.btn-login{
  background:var(--color-primary);color:#0F172A;
  font-weight:600;font-size:14px;padding:8px 20px;
  border-radius:4px;border:1px solid transparent;
  transition:all .2s;white-space:nowrap;
}
.btn-login:hover{
  background:#00d6ba;
  box-shadow:0 0 0 3px rgba(0,194,168,.25);
}
.nav-toggle{
  display:none;background:none;border:none;color:#fff;
  cursor:pointer;padding:8px;border-radius:4px;
}
.mobile-menu{
  display:none;
  position:absolute;top:72px;left:0;right:0;
  background:#141E2B;padding:16px 20px 20px;
  border-top:1px solid rgba(255,255,255,.08);
  box-shadow:0 20px 40px rgba(0,0,0,.3);
}
.mobile-menu.open{display:block}
.mobile-menu a{
  display:block;color:rgba(255,255,255,.9);
  padding:12px 8px;font-size:15px;border-bottom:1px solid rgba(255,255,255,.06);
}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu .btn-login{margin-top:12px;display:inline-block}
@media(max-width:767px){
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:block}
}

/* ===== Hero ===== */
.hero{
  background-color:var(--color-secondary);
  background-image:linear-gradient(rgba(20,30,43,.82),rgba(20,30,43,.94)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  position:relative;color:#fff;
  padding:88px 0 72px;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(0,194,168,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(0,194,168,.05) 1px,transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:320px;height:320px;border-radius:50%;
  left:-120px;top:-120px;
  background:radial-gradient(circle,rgba(0,194,168,.08),transparent 65%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1fr;gap:48px;align-items:center;position:relative;z-index:2}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr}}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(0,194,168,.12);color:#5eead4;
  border:1px solid rgba(0,194,168,.3);
  border-radius:999px;padding:6px 16px;font-size:13px;margin-bottom:20px;
}
.hero h1{
  font-size:clamp(32px,5vw,48px);line-height:1.15;
  font-weight:800;margin:0 0 16px;color:#fff;
}
.highlight{color:var(--color-primary)}
.hero-sub{
  font-size:16px;line-height:1.8;color:rgba(255,255,255,.75);
  max-width:440px;margin:0 0 32px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px}
.btn-primary{
  min-height:44px;padding:0 28px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--color-accent);color:#0F172A;font-weight:700;
  border-radius:4px;border:1px solid transparent;
  font-size:15px;transition:all .2s;
}
.btn-primary:hover{background:#fbb23c;box-shadow:0 0 0 3px rgba(245,158,11,.25);transform:translateY(-1px)}
.btn-outline{
  min-height:44px;padding:0 28px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;color:#fff;font-weight:600;
  border-radius:4px;border:1px solid var(--color-primary);
  font-size:15px;transition:all .2s;
}
.btn-outline:hover{background:rgba(0,194,168,.1);border-color:#00d6ba;box-shadow:0 0 0 3px rgba(0,194,168,.15)}
.hero-console{
  background:#0F1722;border:1px solid rgba(255,255,255,.1);
  border-radius:12px;overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.35);
}
.console-header{
  display:flex;align-items:center;gap:10px;
  padding:14px 20px;
  background:rgba(255,255,255,.04);
  border-bottom:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(255,255,255,.7);
}
.console-dot{width:10px;height:10px;border-radius:50%;background:#00C2A8;animation:logoPulse 1.6s infinite}
.console-body{padding:24px}
.console-row{
  display:flex;justify-content:space-between;align-items:center;
  padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06);
  font-size:14px;
}
.console-row:last-child{border-bottom:none}
.console-label{color:rgba(255,255,255,.6)}
.console-value{color:#fff;font-weight:600;font-variant-numeric:tabular-nums}
.console-value span{color:var(--color-accent)}
.hero-metrics{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
  margin-top:48px;padding-top:32px;
  border-top:1px solid rgba(255,255,255,.1);
  position:relative;z-index:2;
}
@media(min-width:768px){.hero-metrics{grid-template-columns:repeat(4,1fr)}}
.hero-metric{font-size:14px;color:rgba(255,255,255,.7);display:flex;align-items:center;gap:10px}
.hero-metric::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--color-primary);flex-shrink:0}
.scroll-hint{
  position:absolute;right:24px;bottom:80px;color:rgba(255,255,255,.4);
  font-size:12px;display:flex;flex-direction:column;align-items:center;gap:6px;
  animation:floatY 2s ease-in-out infinite;z-index:2;
}
.scroll-hint span{width:1px;height:36px;background:rgba(255,255,255,.25);display:block}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(6px)}}
@media(max-width:767px){.scroll-hint{display:none}}

/* ===== Section Base ===== */
.section{padding:80px 0}
@media(min-width:768px){.section{padding:96px 0}}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:48px}
.section-head h2{
  font-size:clamp(24px,3vw,32px);font-weight:800;color:var(--color-text);
  margin:0;position:relative;padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  background:var(--color-primary);border-radius:4px;
}
.section-head p{margin:8px 0 0;color:var(--color-text-soft);font-size:15px;max-width:420px}
.section-link{font-size:14px;color:var(--color-primary);font-weight:600;white-space:nowrap}
.section-link:hover{text-decoration:underline;text-underline-offset:4px}

/* ===== Service Bento ===== */
.service-section{background:var(--color-surface)}
.bento-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:768px){
  .bento-grid{grid-template-columns:repeat(3,1fr);grid-auto-flow:dense}
}
.bento-card{
  background:var(--color-card);border:1px solid var(--color-border);
  border-radius:var(--radius-card);padding:32px;
  box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;justify-content:space-between;
  min-height:220px;transition:transform .2s,box-shadow .2s;
}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.bento-large{grid-column:span 1;min-height:340px}
@media(min-width:768px){
  .bento-large{grid-column:span 2;grid-row:span 2}
}
.bento-icon{
  width:52px;height:52px;border-radius:8px;
  border:1px solid rgba(0,194,168,.35);background:rgba(0,194,168,.08);
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.bento-icon svg{width:26px;height:26px;stroke:var(--color-primary);fill:none;stroke-width:1.8}
.bento-card h3{font-size:19px;font-weight:700;margin:0 0 8px;color:var(--color-text)}
.bento-card p{
  font-size:14px;line-height:1.7;color:var(--color-text-soft);
  margin:0 0 20px;
}
.bento-link{font-size:14px;font-weight:600;color:var(--color-primary);display:inline-flex;align-items:center;gap:4px}
.bento-link:hover{gap:8px;transition:gap .2s}

/* ===== Metrics ===== */
.metrics-section{
  background:var(--color-secondary);color:#fff;
  position:relative;overflow:hidden;padding:96px 0;
}
.metrics-section::before{
  content:"2026";position:absolute;right:20px;top:-30px;
  font-size:200px;font-weight:900;line-height:1;
  color:rgba(0,194,168,.05);pointer-events:none;
}
.metrics-head{max-width:520px;margin-bottom:64px}
.metrics-head h2{font-size:clamp(24px,3vw,32px);font-weight:800;margin:0 0 12px}
.metrics-head p{color:rgba(255,255,255,.65);font-size:15px;margin:0}
.metrics-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
@media(min-width:768px){.metrics-grid{grid-template-columns:repeat(4,1fr)}}
.metric-item{position:relative}
.metric-item:nth-child(2){margin-top:16px}
.metric-item:nth-child(3){margin-top:32px}
.metric-item:nth-child(4){margin-top:16px}
@media(max-width:767px){.metric-item:nth-child(n){margin-top:0}}
.metric-signal{display:flex;align-items:flex-end;gap:4px;height:34px;margin-bottom:16px}
.metric-signal span{width:5px;background:var(--color-primary);border-radius:2px}
.metric-signal span:nth-child(1){height:10px;opacity:.5}
.metric-signal span:nth-child(2){height:18px;opacity:.7}
.metric-signal span:nth-child(3){height:26px;opacity:.9}
.metric-signal span:nth-child(4){height:34px;background:var(--color-accent)}
.metric-item .metric-num{
  font-size:36px;font-weight:800;line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-1px;
}
.metric-item .metric-label{
  font-size:12px;text-transform:uppercase;letter-spacing:.08em;
  color:rgba(255,255,255,.6);margin-top:6px;
}

/* ===== Case ===== */
.case-section{background:var(--color-card)}
.case-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:1024px){.case-grid{grid-template-columns:1.15fr 1fr}}
.case-main{
  background:var(--color-surface);
  border:1px solid var(--color-border);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s,box-shadow .2s;
}
.case-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.case-main .case-img{aspect-ratio:16/10;overflow:hidden}
.case-main .case-img img{width:100%;height:100%;object-fit:cover}
.case-body{padding:28px}
.case-badge{
  display:inline-block;background:rgba(0,194,168,.12);color:#0d8f7d;
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;margin-bottom:12px;
}
.case-body h3{font-size:20px;font-weight:700;margin:0 0 10px;color:var(--color-text)}
.case-body p{font-size:14px;line-height:1.7;color:var(--color-text-soft);margin:0 0 16px}
.case-result{
  font-size:14px;color:var(--color-text);font-weight:700;
  display:flex;align-items:center;gap:8px;
}
.case-result::before{content:"";width:8px;height:8px;background:var(--color-accent);border-radius:2px}
.case-right{display:grid;gap:24px;grid-template-columns:1fr}
.case-row{
  background:var(--color-surface);border:1px solid var(--color-border);
  border-radius:var(--radius-card);overflow:hidden;display:grid;
  grid-template-columns:1fr;transition:transform .2s,box-shadow .2s;
}
@media(min-width:640px){.case-row{grid-template-columns:130px 1fr}}
.case-row:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.case-row .case-thumb{aspect-ratio:4/3;overflow:hidden}
@media(min-width:640px){.case-row .case-thumb{aspect-ratio:auto;min-height:120px}}
.case-row .case-thumb img{width:100%;height:100%;object-fit:cover}
.case-row .case-info{padding:18px}
.case-row .case-info h4{font-size:15px;font-weight:700;margin:0 0 6px;color:var(--color-text)}
.case-row .case-info p{font-size:13px;color:var(--color-text-soft);line-height:1.6;margin:0 0 8px}
.case-row .case-meta{font-size:13px;font-weight:700;color:var(--color-primary)}

/* ===== Solutions ===== */
.solutions-section{background:var(--color-surface)}
.solutions-grid{display:grid;grid-template-columns:1fr;gap:48px}
@media(min-width:1024px){.solutions-grid{grid-template-columns:.9fr 1.1fr;gap:80px}}
.solutions-left .kicker{
  font-size:14px;font-weight:700;color:var(--color-primary);
  letter-spacing:.06em;text-transform:uppercase;margin-bottom:12px;
}
.solutions-left h2{font-size:clamp(24px,3vw,32px);font-weight:800;margin:0 0 16px}
.solutions-left p{color:var(--color-text-soft);font-size:15px;line-height:1.8;margin:0 0 28px}
.accordion-item{
  background:#fff;border:1px solid var(--color-border);
  border-radius:8px;margin-bottom:14px;overflow:hidden;
  transition:border-color .2s,box-shadow .2s;
}
.accordion-item.open{border-color:rgba(0,194,168,.5);box-shadow:var(--shadow-card)}
.accordion-header{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;cursor:pointer;
  font-size:15px;font-weight:600;color:var(--color-text);
  background:#fff;border:none;width:100%;text-align:left;
}
.accordion-header:hover{color:var(--color-primary)}
.accordion-icon{flex-shrink:0;width:22px;height:22px;position:relative}
.accordion-icon::before,.accordion-icon::after{
  content:"";position:absolute;background:var(--color-primary);
  border-radius:2px;transition:transform .3s;
}
.accordion-icon::before{width:14px;height:2px;top:10px;left:4px}
.accordion-icon::after{width:2px;height:14px;top:4px;left:10px}
.accordion-item.open .accordion-icon::after{transform:scaleY(0)}
.accordion-body{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
  padding:0 24px;
}
.accordion-item.open .accordion-body{max-height:300px;padding-bottom:20px}
.accordion-body p{font-size:14px;line-height:1.8;color:var(--color-text-soft);margin:0}

/* ===== News ===== */
.news-section{background:var(--color-card)}
.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{
  display:flex;flex-direction:column;gap:16px;
  background:var(--color-surface);border:1px solid var(--color-border);
  border-radius:var(--radius-card);padding:24px;
  transition:transform .2s,box-shadow .2s;
}
@media(min-width:768px){.news-item{flex-direction:row;align-items:center}}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(0,194,168,.4)}
.news-date{
  min-width:76px;text-align:center;background:#fff;
  border:1px solid var(--color-border);border-radius:8px;padding:10px 8px;
  align-self:flex-start;
}
@media(min-width:768px){.news-date{align-self:center}}
.news-date .day{font-size:28px;font-weight:800;color:var(--color-text);line-height:1;display:block}
.news-date .ym{font-size:12px;color:var(--color-text-soft);margin-top:4px;display:block;font-family:monospace}
.news-content{flex:1;min-width:0}
.news-content h3{font-size:16px;font-weight:700;margin:0 0 8px;color:var(--color-text);line-height:1.5}
.news-content h3:hover{color:var(--color-primary)}
.news-content p{
  font-size:14px;color:var(--color-text-soft);line-height:1.7;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
@media(min-width:768px){.news-meta{align-items:flex-end}}
.news-meta .badge{
  display:inline-block;background:rgba(0,194,168,.12);color:#0d8f7d;
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;
}
.news-meta .read-more{font-size:14px;font-weight:600;color:var(--color-primary);white-space:nowrap}
.news-empty{
  text-align:center;padding:40px;border:1px dashed var(--color-border);
  border-radius:8px;color:var(--color-text-soft);font-size:15px;
  background:var(--color-surface);
}

/* ===== FAQ ===== */
.faq-section{background:var(--color-surface)}
.faq-grid{display:grid;grid-template-columns:1fr;gap:40px}
@media(min-width:1024px){.faq-grid{grid-template-columns:.8fr 1.2fr;gap:80px}}
.faq-left h2{font-size:clamp(24px,3vw,32px);font-weight:800;margin:0 0 16px}
.faq-left p{color:var(--color-text-soft);font-size:15px;line-height:1.8;margin:0 0 24px}
.faq-contact{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;
  font-weight:600;color:var(--color-primary);
}
.faq-contact:hover{text-decoration:underline;text-underline-offset:4px}
.faq-list .accordion-item{background:var(--color-card)}

/* ===== CTA ===== */
.cta-section{
  background:var(--color-secondary);padding:64px 0;
  position:relative;overflow:hidden;
}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,transparent 0%,transparent 55%,rgba(0,194,168,.06) 56%,transparent 58%),
             linear-gradient(120deg,transparent 0%,transparent 62%,rgba(0,194,168,.04) 63%,transparent 65%);
  pointer-events:none;
}
.cta-inner{
  border:1px solid rgba(0,194,168,.5);border-radius:12px;
  padding:40px 32px;position:relative;
  display:flex;flex-direction:column;align-items:flex-start;gap:24px;
}
@media(min-width:768px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;padding:48px 56px}}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.6vw,30px);font-weight:800;margin:0 0 8px}
.cta-inner p{color:rgba(255,255,255,.7);font-size:15px;margin:0}

/* ===== Footer ===== */
.site-footer{background:#101A26;color:rgba(255,255,255,.65);padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px;margin-bottom:48px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:60px}}
.footer-brand .brand-logo{font-size:20px}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.5);margin-top:16px;max-width:280px}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin:0 0 16px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:rgba(255,255,255,.6);font-size:14px;transition:color .2s}
.footer-col ul a:hover{color:var(--color-primary)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:24px;display:flex;flex-direction:column;gap:8px;
  font-size:13px;color:rgba(255,255,255,.4);
}
@media(min-width:768px){.footer-bottom{flex-direction:row;justify-content:space-between;align-items:center}}
.footer-bottom a{color:rgba(255,255,255,.5);font-size:13px}
.footer-bottom a:hover{color:var(--color-primary)}
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:90;
  width:40px;height:40px;border-radius:6px;
  background:var(--color-secondary);color:var(--color-primary);
  border:1px solid var(--color-primary);font-size:18px;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:all .2s;opacity:0;visibility:hidden;
}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:var(--color-primary);color:#0F172A;transform:translateY(-2px)}

@media(max-width:520px){
  .brand-logo{font-size:17px}
  .hero{padding:64px 0 56px}
  .section{padding:64px 0}
  .bento-card{padding:24px}
  .cta-inner{padding:28px 20px}
}

/* roulang page: category1 */
:root {
    --color-primary: #00C2A8;
    --color-primary-dark: #00A08A;
    --color-secondary: #1A2A3A;
    --color-secondary-dark: #101A26;
    --color-accent: #F59E0B;
    --color-surface: #F6F7F8;
    --color-card: #FFFFFF;
    --color-text: #0F172A;
    --color-text-soft: #536878;
    --color-border: #DCE2E8;
    --radius-card: 8px;
    --radius-btn: 4px;
    --radius-badge: 999px;
    --shadow-card: 0 1px 4px rgba(15,23,42,.05);
    --shadow-hover: 0 8px 24px rgba(15,23,42,.12);
    --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  }

  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.75;
    color: var(--color-text);
    background: var(--color-surface);
    -webkit-font-smoothing: antialiased;
  }

  a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color .2s ease;
  }

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

  button, input {
    font-family: inherit;
  }

  .container {
    max-width: 1152px;
    margin: 0 auto;
    padding: 0 16px;
  }

  @media (min-width: 768px) {
    .container {
      padding: 0 32px;
    }
  }

  /* 导航 */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #141E2B;
    border-bottom: 1px solid rgba(0, 194, 168, .15);
    height: 72px;
  }

  .nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    position: relative;
  }

  .brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    letter-spacing: .5px;
    white-space: nowrap;
    flex-shrink: 0;
    transition: opacity .2s;
  }

  .brand-logo:hover {
    opacity: .88;
    color: #fff;
  }

  .logo-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-primary);
    box-shadow: 0 0 10px rgba(0, 194, 168, .6);
    animation: breathe 2s ease-in-out infinite;
  }

  @keyframes breathe {
    0%, 100% { opacity: .7; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.25); }
  }

  .nav-left, .nav-right {
    display: none;
    align-items: center;
    gap: 20px;
  }

  @media (min-width: 768px) {
    .nav-left, .nav-right {
      display: flex;
    }

    .nav-left {
      position: absolute;
      left: 32px;
    }

    .nav-right {
      position: absolute;
      right: 130px;
    }
  }

  .nav-link {
    font-size: 14px;
    color: rgba(255, 255, 255, .85);
    padding: 6px 0;
    position: relative;
    transition: color .2s;
    white-space: nowrap;
  }

  .nav-link:hover {
    color: #fff;
  }

  .nav-link.active {
    color: #fff;
  }

  .nav-link.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
  }

  .btn-login {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 36px;
    padding: 0 22px;
    background: var(--color-primary);
    color: #0B1520;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-btn);
    white-space: nowrap;
    transition: all .2s ease;
    flex-shrink: 0;
  }

  .btn-login:hover {
    background: var(--color-primary-dark);
    box-shadow: 0 0 0 3px rgba(0, 194, 168, .25);
    color: #0B1520;
  }

  /* 移动端汉堡 */
  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, .3);
    border-radius: 4px;
    cursor: pointer;
    align-items: center;
    margin-left: auto;
  }

  .nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all .3s;
  }

  .nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  @media (min-width: 768px) {
    .nav-toggle {
      display: none;
    }
  }

  .mobile-menu {
    display: none;
    background: #141E2B;
    border-top: 1px solid rgba(255, 255, 255, .08);
    padding: 16px 24px 24px;
  }

  .mobile-menu.open {
    display: block;
  }

  .mobile-link {
    display: block;
    color: rgba(255, 255, 255, .85);
    font-size: 15px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, .06);
    transition: color .2s;
  }

  .mobile-link:hover {
    color: var(--color-primary);
  }

  .mobile-link.active {
    color: var(--color-primary);
  }

  .mobile-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 16px;
    min-height: 40px;
    background: var(--color-primary);
    color: #0B1520;
    font-weight: 600;
    border-radius: 4px;
    transition: all .2s;
  }

  .mobile-cta:hover {
    background: var(--color-primary-dark);
    color: #0B1520;
  }

  /* Hero */
  .category-hero {
    background-color: var(--color-secondary);
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
    padding: 80px 0 56px;
  }

  .category-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(20, 30, 43, .92) 0%, rgba(20, 30, 43, .72) 50%, rgba(20, 30, 43, .5) 100%);
    z-index: 1;
  }

  .category-hero::after {
    content: "";
    position: absolute;
    top: -60px;
    right: 10%;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(0, 194, 168, .12) 0%, transparent 70%);
    z-index: 1;
  }

  .category-hero .container {
    position: relative;
    z-index: 2;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(0, 194, 168, .12);
    border: 1px solid rgba(0, 194, 168, .35);
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: var(--radius-badge);
    margin-bottom: 20px;
    letter-spacing: .5px;
  }

  .hero-badge::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
  }

  .category-hero h1 {
    font-size: 40px;
    line-height: 1.15;
    color: #fff;
    font-weight: 800;
    letter-spacing: 1px;
    margin-bottom: 16px;
  }

  @media (min-width: 768px) {
    .category-hero h1 {
      font-size: 52px;
    }
  }

  .category-hero .hero-sub {
    max-width: 640px;
    color: rgba(255, 255, 255, .8);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 32px;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 48px;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 32px;
    background: var(--color-accent);
    color: #1A1408;
    font-size: 15px;
    font-weight: 700;
    border-radius: var(--radius-btn);
    border: none;
    cursor: pointer;
    transition: all .2s ease;
    box-shadow: 0 2px 8px rgba(245, 158, 11, .3);
  }

  .btn-primary:hover {
    background: #FFB326;
    box-shadow: 0 4px 16px rgba(245, 158, 11, .4);
    transform: translateY(-1px);
    color: #1A1408;
  }

  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 32px;
    background: transparent;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-btn);
    border: 1px solid var(--color-primary);
    cursor: pointer;
    transition: all .2s ease;
  }

  .btn-secondary:hover {
    background: rgba(0, 194, 168, .08);
    box-shadow: 0 0 0 3px rgba(0, 194, 168, .25);
    color: #fff;
  }

  .hero-metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding-top: 28px;
  }

  @media (min-width: 768px) {
    .hero-metrics {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  .metric-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, .75);
    position: relative;
    padding-left: 14px;
  }

  .metric-item::before {
    content: "";
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--color-primary);
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
  }

  /* 通用板块 */
  .section {
    padding: 72px 0;
  }

  @media (min-width: 768px) {
    .section {
      padding: 88px 0;
    }
  }

  .section-light {
    background: var(--color-card);
  }

  .section-gray {
    background: var(--color-surface);
  }

  .section-dark {
    background: var(--color-secondary);
    color: #fff;
  }

  .section-head {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 44px;
  }

  .section-head::before {
    content: "";
    width: 4px;
    height: 36px;
    background: var(--color-primary);
    border-radius: 2px;
    flex-shrink: 0;
    margin-top: 4px;
  }

  .section-head h2 {
    font-size: 28px;
    line-height: 1.25;
    color: var(--color-text);
    font-weight: 700;
  }

  @media (min-width: 768px) {
    .section-head h2 {
      font-size: 32px;
    }
  }

  .section-head p {
    font-size: 14px;
    color: var(--color-text-soft);
    line-height: 1.7;
    margin-top: 6px;
    max-width: 560px;
  }

  .section-head.light h2 {
    color: #fff;
  }

  .section-head.light p {
    color: rgba(255, 255, 255, .7);
  }

  /* Bento 卖点 */
  .bento-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
  }

  .bento-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 28px;
    box-shadow: var(--shadow-card);
    transition: all .2s ease;
    position: relative;
    overflow: hidden;
  }

  .bento-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0, 194, 168, .4);
  }

  .bento-card.bento-large {
    grid-column: span 6;
    background: linear-gradient(135deg, #0F2A35 0%, #14343F 60%, #1A3E48 100%);
    border: none;
    color: #fff;
    box-shadow: 0 4px 20px rgba(0, 0, 0, .15);
    padding: 36px;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }

  .bento-card.bento-large::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    width: 220px;
    height: 220px;
    background: radial-gradient(circle, rgba(0, 194, 168, .15) 0%, transparent 70%);
  }

  @media (min-width: 768px) {
    .bento-card.bento-large {
      grid-column: span 4;
    }

    .bento-card.bento-half {
      grid-column: span 2;
    }

    .bento-card.bento-third {
      grid-column: span 2;
    }
  }

  .bento-icon {
    width: 48px;
    height: 48px;
    border: 1px solid rgba(0, 194, 168, .35);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 194, 168, .06);
    margin-bottom: 18px;
  }

  .bento-large .bento-icon {
    border-color: rgba(0, 194, 168, .5);
    background: rgba(0, 194, 168, .1);
  }

  .bento-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 10px;
  }

  .bento-large h3 {
    color: #fff;
    font-size: 22px;
  }

  .bento-card p {
    font-size: 14px;
    color: var(--color-text-soft);
    line-height: 1.7;
  }

  .bento-large p {
    color: rgba(255, 255, 255, .8);
    max-width: 480px;
  }

  .bento-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    margin-top: 16px;
    transition: gap .2s;
  }

  .bento-link:hover {
    gap: 10px;
  }

  .bento-large .bento-link {
    color: #fff;
  }

  /* 流程 */
  .process-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 24px;
  }

  @media (min-width: 768px) {
    .process-grid {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  .process-step {
    position: relative;
    padding: 28px 24px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    transition: all .2s ease;
  }

  .process-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }

  .process-step .step-num {
    font-size: 32px;
    font-weight: 800;
    color: rgba(0, 194, 168, .18);
    line-height: 1;
    margin-bottom: 14px;
    font-variant-numeric: tabular-nums;
  }

  .process-step h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
  }

  .process-step p {
    font-size: 14px;
    color: var(--color-text-soft);
    line-height: 1.7;
  }

  /* 场景卡片（横条） */
  .scenario-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }

  .scenario-card {
    display: flex;
    flex-direction: column;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all .2s ease;
  }

  .scenario-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: rgba(0, 194, 168, .35);
  }

  @media (min-width: 768px) {
    .scenario-card {
      flex-direction: row;
      align-items: stretch;
    }
  }

  .scenario-img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .scenario-img {
      width: 280px;
      aspect-ratio: auto;
      min-height: 180px;
    }
  }

  .scenario-body {
    padding: 24px;
    flex: 1;
  }

  .scenario-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
  }

  .tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 600;
    padding: 2px 12px;
    background: rgba(0, 194, 168, .08);
    color: var(--color-primary-dark);
    border: 1px solid rgba(0, 194, 168, .2);
    border-radius: var(--radius-badge);
  }

  .tag-accent {
    background: rgba(245, 158, 11, .1);
    color: #B45309;
    border-color: rgba(245, 158, 11, .25);
  }

  .scenario-body h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
  }

  .scenario-body p {
    font-size: 14px;
    color: var(--color-text-soft);
    line-height: 1.7;
  }

  .scenario-meta {
    margin-top: 14px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary-dark);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap .2s;
  }

  .scenario-meta:hover {
    gap: 8px;
  }

  /* 方案 Accordion */
  .solution-wrap {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
  }

  @media (min-width: 1024px) {
    .solution-wrap {
      grid-template-columns: 5fr 7fr;
      gap: 60px;
    }
  }

  .solution-left {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .solution-left h2 {
    font-size: 28px;
    line-height: 1.3;
    color: #fff;
    font-weight: 700;
    margin-bottom: 16px;
  }

  .solution-left p {
    color: rgba(255, 255, 255, .75);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 28px;
  }

  .accordion-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .accordion-item {
    background: rgba(255, 255, 255, .04);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: border-color .3s;
  }

  .accordion-item.open {
    border-color: var(--color-primary);
  }

  .accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    cursor: pointer;
    transition: background .2s;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    background: transparent;
    border: none;
    width: 100%;
    text-align: left;
  }

  .accordion-header:hover {
    background: rgba(255, 255, 255, .03);
  }

  .accordion-header .icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, .2);
    border-radius: 50%;
    transition: all .3s;
    font-size: 14px;
    color: var(--color-primary);
  }

  .accordion-item.open .accordion-header .icon {
    background: var(--color-primary);
    color: #0B1520;
    border-color: var(--color-primary);
    transform: rotate(45deg);
  }

  .accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
    padding: 0 24px;
    color: rgba(255, 255, 255, .7);
    font-size: 14px;
    line-height: 1.75;
  }

  .accordion-body-inner {
    padding-bottom: 20px;
  }

  /* FAQ */
  .faq-wrap {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
  }

  @media (min-width: 1024px) {
    .faq-wrap {
      grid-template-columns: 4fr 8fr;
      gap: 60px;
    }
  }

  .faq-left {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
  }

  .faq-left h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
    margin-bottom: 14px;
  }

  .faq-left p {
    color: var(--color-text-soft);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 24px;
  }

  .faq-contact-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    transition: gap .2s;
  }

  .faq-contact-link:hover {
    gap: 10px;
  }

  .faq-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .faq-item {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    transition: border-color .2s;
    overflow: hidden;
  }

  .faq-item.open {
    border-color: var(--color-primary);
  }

  .faq-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text);
    transition: background .2s;
    font-family: inherit;
  }

  .faq-header:hover {
    background: rgba(0, 194, 168, .02);
  }

  .faq-header .faq-icon {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    font-size: 14px;
    color: var(--color-primary);
    transition: all .3s;
  }

  .faq-item.open .faq-header .faq-icon {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
  }

  .faq-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
    padding: 0 22px;
    font-size: 14px;
    color: var(--color-text-soft);
    line-height: 1.7;
  }

  .faq-body-inner {
    padding-bottom: 18px;
  }

  /* CTA */
  .cta-section {
    background: var(--color-secondary);
    position: relative;
    overflow: hidden;
  }

  .cta-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 60%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 194, 168, .1) 0%, transparent 70%);
  }

  .cta-box {
    border: 1px solid rgba(0, 194, 168, .4);
    border-radius: 12px;
    padding: 48px 40px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    align-items: flex-start;
    position: relative;
    z-index: 2;
    background: rgba(0, 0, 0, .15);
  }

  @media (min-width: 768px) {
    .cta-box {
      flex-direction: row;
      align-items: center;
      justify-content: space-between;
    }
  }

  .cta-box h2 {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    line-height: 1.35;
    margin-bottom: 8px;
    max-width: 420px;
  }

  .cta-box p {
    color: rgba(255, 255, 255, .7);
    font-size: 14px;
    line-height: 1.7;
    max-width: 420px;
  }

  /* 页脚 */
  .site-footer {
    background: var(--color-secondary-dark);
    color: rgba(255, 255, 255, .7);
    padding: 56px 0 28px;
    position: relative;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 36px;
    margin-bottom: 40px;
  }

  @media (min-width: 768px) {
    .footer-grid {
      grid-template-columns: 2fr 1fr 1fr 1fr;
    }
  }

  .footer-brand .brand-logo {
    font-size: 20px;
    margin-bottom: 14px;
  }

  .footer-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, .6);
    line-height: 1.75;
    margin-top: 14px;
    max-width: 260px;
  }

  .footer-col h4 {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
  }

  .footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .footer-col a {
    font-size: 14px;
    color: rgba(255, 255, 255, .7);
    transition: color .2s;
  }

  .footer-col a:hover {
    color: var(--color-primary);
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .08);
    padding-top: 24px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px;
    font-size: 12px;
    color: #7A8B9F;
  }

  .footer-bottom a {
    color: #7A8B9F;
  }

  .footer-bottom a:hover {
    color: var(--color-primary);
  }

  .back-to-top {
    position: fixed;
    right: 24px;
    bottom: 80px;
    width: 36px;
    height: 36px;
    border: 1px solid var(--color-primary);
    border-radius: 4px;
    background: rgba(15, 23, 42, .8);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 99;
    font-size: 18px;
    transition: all .2s;
    opacity: 0;
    pointer-events: none;
  }

  .back-to-top.show {
    opacity: 1;
    pointer-events: auto;
  }

  .back-to-top:hover {
    background: var(--color-primary);
    color: #0B1520;
  }

  /* 聚焦可见 */
  a:focus-visible,
  button:focus-visible,
  .faq-header:focus-visible,
  .accordion-header:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
  }

  /* 滚动条 */
  ::-webkit-scrollbar {
    width: 10px;
  }

  ::-webkit-scrollbar-track {
    background: #f1f1f1;
  }

  ::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 5px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
  }

  /* 图片文字水印容错 */
  .img-mask {
    position: relative;
    background: #E2E8F0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94A3B8;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
  }

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #00C2A8;
            --color-secondary: #1A2A3A;
            --color-accent: #F59E0B;
            --color-surface: #F6F7F8;
            --color-card: #FFFFFF;
            --color-text: #0F172A;
            --color-text-soft: #536878;
            --color-border: #DCE2E8;
            --color-header-bg: #141E2B;
            --color-footer-bg: #101A26;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-badge: 999px;
            --shadow-card: 0 1px 4px rgba(15, 23, 42, .05);
            --shadow-hover: 0 8px 24px rgba(15, 23, 42, .12);
            --container-w: 1152px;
            --section-gap: 88px;
        }

        /* ========== 基础重置 ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            background: var(--color-surface);
            color: var(--color-text);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--color-header-bg);
            height: 72px;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }
        .header-inner {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            color: rgba(255, 255, 255, .72);
            font-size: 15px;
            padding: 8px 14px;
            border-radius: 4px;
            transition: color .2s, background .2s;
            position: relative;
            line-height: 1.4;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .08);
        }
        .nav-link.active {
            color: #fff;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            padding: 0 24px;
            letter-spacing: .5px;
            white-space: nowrap;
        }
        .logo-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-primary);
            box-shadow: 0 0 0 0 rgba(0, 194, 168, .6);
            animation: breath 2s infinite;
            flex-shrink: 0;
        }
        @keyframes breath {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(0, 194, 168, .5);
            }
            50% {
                box-shadow: 0 0 0 6px rgba(0, 194, 168, 0);
            }
        }
        .btn-login {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary);
            color: #07130f;
            font-weight: 600;
            font-size: 14px;
            padding: 8px 22px;
            border-radius: var(--radius-btn);
            margin-left: 16px;
            transition: box-shadow .2s, filter .2s;
            min-height: 38px;
            white-space: nowrap;
        }
        .btn-login:hover {
            filter: brightness(1.08);
            box-shadow: 0 0 0 3px rgba(0, 194, 168, .25);
        }
        .btn-login:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 4px;
        }
        .nav-toggle .bar {
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: transform .25s, opacity .25s;
        }
        .nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle[aria-expanded="true"] .bar:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle[aria-expanded="true"] .bar:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 移动端导航抽屉 */
        .mobile-nav {
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: var(--color-header-bg);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            padding: 16px 24px 24px;
            display: none;
            z-index: 99;
            box-shadow: 0 20px 30px rgba(0, 0, 0, .2);
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-nav a {
            display: block;
            color: rgba(255, 255, 255, .8);
            padding: 12px 8px;
            border-radius: 6px;
            font-size: 16px;
            transition: background .2s;
        }
        .mobile-nav a:hover {
            background: rgba(255, 255, 255, .06);
            color: #fff;
        }
        .mobile-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .mobile-nav .btn-login-mobile {
            margin-top: 12px;
            text-align: center;
            background: var(--color-primary);
            color: #07130f;
            font-weight: 600;
            border-radius: 4px;
        }

        /* ========== 通用按钮 ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-accent);
            color: #1a2a1a;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 30px;
            border-radius: var(--radius-btn);
            min-height: 44px;
            transition: box-shadow .2s, filter .2s, transform .2s;
            box-shadow: 0 2px 10px rgba(245, 158, 11, .18);
        }
        .btn-primary:hover {
            filter: brightness(1.05);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, .25), 0 6px 18px rgba(245, 158, 11, .2);
            transform: translateY(-1px);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #fff;
            font-weight: 500;
            font-size: 15px;
            padding: 11px 28px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--color-primary);
            min-height: 44px;
            transition: border-color .2s, background .2s, box-shadow .2s;
        }
        .btn-secondary:hover {
            background: rgba(0, 194, 168, .1);
            box-shadow: 0 0 0 3px rgba(0, 194, 168, .15);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        /* ========== 页面 Hero ========== */
        .page-hero {
            position: relative;
            background-color: var(--color-header-bg);
            background-image: linear-gradient(to bottom, rgba(20, 30, 43, .88), rgba(20, 30, 43, .82)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 76px 0 64px;
            border-bottom: 1px solid rgba(255, 255, 255, .04);
            overflow: hidden;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            top: -80px;
            left: -80px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(0, 194, 168, .18) 0%, transparent 65%);
            pointer-events: none;
        }
        .page-hero::after {
            content: "";
            position: absolute;
            bottom: -60px;
            right: 20px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(245, 158, 11, .08) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-breadcrumb {
            font-size: 13px;
            color: rgba(255, 255, 255, .55);
            margin-bottom: 18px;
            letter-spacing: .3px;
        }
        .hero-breadcrumb a {
            color: rgba(255, 255, 255, .7);
            transition: color .2s;
        }
        .hero-breadcrumb a:hover {
            color: var(--color-primary);
        }
        .page-hero h1 {
            font-size: 42px;
            line-height: 1.18;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .hero-sub {
            max-width: 600px;
            color: rgba(255, 255, 255, .78);
            font-size: 16px;
            line-height: 1.75;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 44px;
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 24px;
        }
        .hero-metrics span {
            color: rgba(255, 255, 255, .6);
            font-size: 13px;
            padding-left: 16px;
            position: relative;
        }
        .hero-metrics span::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            background: var(--color-primary);
            border-radius: 50%;
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-title-wrap {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            margin-bottom: 40px;
        }
        .section-title-bar {
            width: 4px;
            height: 28px;
            background: var(--color-primary);
            border-radius: 2px;
            flex-shrink: 0;
            margin-top: 6px;
        }
        .section-title-wrap h2 {
            font-size: 30px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--color-text);
        }
        .section-title-wrap p {
            color: var(--color-text-soft);
            font-size: 14px;
            margin-top: 6px;
        }

        /* ========== 核心能力 ========== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: transform .2s, box-shadow .2s;
        }
        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .service-card:focus-within {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 8px;
            border: 1px solid rgba(0, 194, 168, .3);
            background: rgba(0, 194, 168, .06);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }
        .service-icon svg {
            width: 22px;
            height: 22px;
            stroke: var(--color-primary);
        }
        .service-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .service-card p {
            color: var(--color-text-soft);
            font-size: 14px;
            line-height: 1.7;
        }

        /* ========== 横条内容流 ========== */
        .stream-section {
            background: #fff;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .stream-list {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .stream-card {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 0;
            background: var(--color-surface);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s, transform .25s;
        }
        .stream-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .stream-media {
            position: relative;
            min-height: 260px;
            overflow: hidden;
        }
        .stream-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
            transition: transform .4s;
        }
        .stream-card:hover .stream-media img {
            transform: scale(1.03);
        }
        .stream-body {
            padding: 36px 38px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .stream-tag {
            display: inline-flex;
            align-self: flex-start;
            font-size: 12px;
            font-weight: 500;
            color: var(--color-primary);
            background: rgba(0, 194, 168, .08);
            border-radius: var(--radius-badge);
            padding: 3px 14px;
            margin-bottom: 14px;
            letter-spacing: .5px;
        }
        .stream-body h3 {
            font-size: 22px;
            font-weight: 600;
            line-height: 1.35;
            margin-bottom: 10px;
            color: var(--color-text);
        }
        .stream-body p {
            color: var(--color-text-soft);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .stream-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            transition: gap .2s;
        }
        .stream-link:hover {
            gap: 10px;
            color: #009b86;
        }
        .stream-link:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .stream-card:nth-child(even) .stream-media {
            order: 2;
        }

        /* ========== 安全流程 ========== */
        .flow-section {
            background: var(--color-secondary);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .flow-section::before {
            content: "";
            position: absolute;
            top: 30px;
            right: 80px;
            font-size: 180px;
            font-weight: 700;
            color: rgba(0, 194, 168, .06);
            line-height: 1;
            pointer-events: none;
        }
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            position: relative;
            z-index: 2;
        }
        .flow-item {
            background: rgba(255, 255, 255, .03);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 10px;
            padding: 32px 28px;
            position: relative;
            transition: border-color .25s, background .25s;
        }
        .flow-item:hover {
            border-color: rgba(0, 194, 168, .5);
            background: rgba(0, 194, 168, .05);
        }
        .flow-step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #07130f;
            font-weight: 700;
            font-size: 14px;
            margin-bottom: 18px;
        }
        .flow-item h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .flow-item p {
            color: rgba(255, 255, 255, .62);
            font-size: 14px;
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-layout {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 40px;
        }
        .faq-left h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 14px;
        }
        .faq-left p {
            color: var(--color-text-soft);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .faq-contact-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-primary);
            font-weight: 500;
            font-size: 15px;
            transition: gap .2s;
        }
        .faq-contact-link:hover {
            gap: 10px;
            color: #009b86;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            transition: border-color .2s, box-shadow .2s;
            overflow: hidden;
        }
        .faq-item.open {
            border-left: 3px solid var(--color-primary);
            box-shadow: 0 4px 16px rgba(15, 23, 42, .06);
        }
        .faq-q {
            width: 100%;
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            background: transparent;
            transition: background .2s;
        }
        .faq-q:hover {
            background: rgba(0, 194, 168, .03);
        }
        .faq-q:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: -2px;
            border-radius: 6px;
        }
        .faq-q svg {
            flex-shrink: 0;
            transition: transform .3s;
            stroke: var(--color-text-soft);
        }
        .faq-item.open .faq-q svg {
            transform: rotate(180deg);
            stroke: var(--color-primary);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-a-inner {
            padding: 0 20px 18px;
            color: var(--color-text-soft);
            font-size: 14px;
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-banner {
            background: var(--color-header-bg);
            padding: 68px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            border: 2px solid rgba(0, 194, 168, .3);
            margin: 24px;
            border-radius: 12px;
            pointer-events: none;
        }
        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            position: relative;
            z-index: 2;
        }
        .cta-text h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-text p {
            color: rgba(255, 255, 255, .65);
            font-size: 15px;
            max-width: 400px;
            line-height: 1.7;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--color-footer-bg);
            padding: 60px 0 28px;
            color: rgba(255, 255, 255, .7);
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .brand-logo {
            padding: 0;
            font-size: 20px;
            margin-bottom: 14px;
            color: #fff;
        }
        .footer-desc {
            color: rgba(255, 255, 255, .55);
            font-size: 14px;
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: .5px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col a {
            color: rgba(255, 255, 255, .65);
            transition: color .2s;
        }
        .footer-col a:hover {
            color: var(--color-primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            color: #7A8B9F;
            font-size: 12px;
        }
        .footer-bottom a {
            color: #7A8B9F;
        }
        .footer-bottom a:hover {
            color: var(--color-primary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .nav-right {
                gap: 4px;
            }
            .nav-link {
                padding: 8px 10px;
                font-size: 14px;
            }
            .brand-logo {
                font-size: 18px;
                padding: 0 14px;
            }
            .btn-login {
                padding: 8px 16px;
                margin-left: 8px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 64px;
            }
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .site-header {
                height: 64px;
            }
            .header-inner {
                height: 64px;
            }
            .nav-left,
            .nav-right,
            .header-inner>.btn-login {
                display: none;
            }
            .nav-toggle {
                display: flex;
                position: absolute;
                left: 12px;
            }
            .brand-logo {
                font-size: 17px;
                padding: 0;
                margin: 0 auto;
            }
            .mobile-nav.open {
                display: block;
            }
            .page-hero {
                padding: 56px 0 44px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .stream-card {
                grid-template-columns: 1fr;
            }
            .stream-card:nth-child(even) .stream-media {
                order: 0;
            }
            .stream-media {
                min-height: 0;
                aspect-ratio: 16/9;
            }
            .stream-media img {
                aspect-ratio: 16/9;
            }
            .stream-body {
                padding: 24px 22px;
            }
            .flow-grid {
                grid-template-columns: 1fr;
            }
            .faq-layout {
                grid-template-columns: 1fr;
            }
            .cta-inner {
                flex-direction: column;
                text-align: center;
            }
            .cta-text p {
                margin: 0 auto;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 27px;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
            }
            .section-title-wrap h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .stream-body h3 {
                font-size: 19px;
            }
        }

/* roulang page: article */
:root {
  --color-primary: #00C2A8;
  --color-secondary: #1A2A3A;
  --color-accent: #F59E0B;
  --color-surface: #F6F7F8;
  --color-card: #FFFFFF;
  --color-text: #0F172A;
  --color-text-soft: #536878;
  --color-border: #DCE2E8;
  --radius-card: 8px;
  --radius-btn: 4px;
  --radius-tag: 999px;
  --shadow-card: 0 1px 4px rgba(15, 23, 42, .05);
  --shadow-hover: 0 8px 24px rgba(15, 23, 42, .12);
  --container-w: 1200px;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--color-surface);
  color: var(--color-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
  cursor: pointer;
}
.container-custom {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 16px;
}
@media (min-width: 768px) {
  .container-custom {
    padding: 0 32px;
  }
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #141E2B;
  box-shadow: 0 2px 12px rgba(15, 23, 42, .2);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 72px;
  position: relative;
}
@media (min-width: 768px) {
  .header-inner {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    justify-content: space-between;
  }
  .nav-left {
    justify-self: start;
  }
  .nav-right {
    justify-self: end;
  }
}
.nav-left,
.nav-right {
  display: none;
  align-items: center;
  gap: 28px;
}
@media (min-width: 768px) {
  .nav-left,
  .nav-right {
    display: flex;
  }
}
.nav-link {
  color: rgba(255, 255, 255, .85);
  font-size: 15px;
  font-weight: 500;
  padding: 6px 2px;
  position: relative;
  white-space: nowrap;
  transition: color .2s;
}
.nav-link:hover {
  color: #fff;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: var(--color-primary);
  transition: width .25s;
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}
.nav-link.active {
  color: #fff;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .5px;
  white-space: nowrap;
}
.logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 10px rgba(0, 194, 168, .8);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 10px rgba(0, 194, 168, .8);
  }
  50% {
    opacity: .6;
    box-shadow: 0 0 4px rgba(0, 194, 168, .8);
  }
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all .2s;
}
.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.btn-login {
  background: var(--color-primary);
  color: #0F172A;
}
.btn-login:hover {
  box-shadow: 0 0 0 3px rgba(0, 194, 168, .25);
  filter: brightness(1.05);
}
.btn-primary {
  background: var(--color-primary);
  color: #0F172A;
}
.btn-primary:hover {
  box-shadow: 0 0 0 3px rgba(0, 194, 168, .25);
  filter: brightness(1.05);
}
.btn-outline {
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}
.btn-outline:hover {
  background: rgba(0, 194, 168, .08);
  box-shadow: 0 0 0 3px rgba(0, 194, 168, .18);
}
.nav-toggle {
  display: block;
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: #fff;
  font-size: 22px;
  padding: 8px;
  z-index: 5;
  border-radius: 6px;
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }
}
.mobile-menu {
  display: none;
}
.mobile-menu.open {
  display: flex;
  flex-direction: column;
  background: #141E2B;
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 16px 24px 24px;
  gap: 4px;
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  box-shadow: 0 12px 24px rgba(15, 23, 42, .35);
}
.mobile-link {
  color: rgba(255, 255, 255, .85);
  padding: 12px 8px;
  border-radius: 6px;
  font-size: 16px;
  transition: background .2s, color .2s;
}
.mobile-link:hover {
  background: rgba(255, 255, 255, .06);
  color: #fff;
}
.mobile-login {
  color: #0F172A;
  background: var(--color-primary);
  margin-top: 8px;
  text-align: center;
  font-weight: 600;
}
.breadcrumb {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
  font-size: 13px;
  color: var(--color-text-soft);
}
.breadcrumb .container-custom {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--color-text-soft);
  transition: color .2s;
}
.breadcrumb a:hover {
  color: var(--color-primary);
}
.breadcrumb .current {
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 320px;
}
@media (min-width: 768px) {
  .breadcrumb .current {
    max-width: 420px;
  }
}
.breadcrumb .sep {
  color: #94A3B8;
}
.article-header {
  padding: 48px 0 16px;
}
.article-header h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: .5px;
  margin: 0 0 16px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--color-text-soft);
  font-size: 14px;
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta i {
  color: var(--color-primary);
  font-size: 15px;
}
.article-wrap {
  padding: 16px 0 72px;
}
.article-main {
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px 24px;
  max-width: 768px;
  margin: 0 auto;
}
@media (min-width: 768px) {
  .article-main {
    padding: 48px 56px;
  }
}
.article-body {
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-text);
}
.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 40px 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 32px 0 12px;
}
.article-body p {
  margin-bottom: 24px;
}
.article-body a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: opacity .2s;
}
.article-body a:hover {
  opacity: .8;
}
.article-body blockquote {
  border-left: 3px solid var(--color-primary);
  background: rgba(0, 194, 168, .06);
  padding: 16px 20px;
  margin: 24px 0;
  color: var(--color-text-soft);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
}
.article-body ul,
.article-body ol {
  margin: 16px 0 24px;
  padding-left: 24px;
}
.article-body li {
  margin-bottom: 8px;
}
.article-body code {
  background: #F1F5F9;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 14px;
  font-family: "SFMono-Regular", Consolas, monospace;
}
.article-body pre {
  background: #1A2A3A;
  color: #E2E8F0;
  padding: 20px;
  border-radius: var(--radius-card);
  overflow-x: auto;
  margin-bottom: 24px;
}
.article-body pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}
.article-body img {
  max-width: 100%;
  border-radius: var(--radius-card);
  margin: 24px 0;
}
.article-footer {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag-item {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: var(--radius-tag);
  background: rgba(0, 194, 168, .08);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 500;
}
.post-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
}
.post-nav-item {
  flex: 1;
  min-width: 200px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 14px 18px;
  transition: all .2s;
}
.post-nav-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card);
}
.post-nav-item:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.post-nav-item span {
  display: block;
  font-size: 13px;
  color: var(--color-text-soft);
}
.post-nav-item strong {
  display: block;
  font-size: 15px;
  color: var(--color-text);
  margin-top: 4px;
}
.not-found {
  text-align: center;
  padding: 60px 20px 80px;
}
.not-found .empty-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(0, 194, 168, .1);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 16px;
}
.not-found h2 {
  font-size: 24px;
  margin-bottom: 8px;
}
.not-found p {
  color: var(--color-text-soft);
  margin-bottom: 24px;
}
.related-section {
  padding: 72px 0 24px;
}
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.section-head h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 0;
  padding-left: 12px;
  border-left: 4px solid var(--color-primary);
  line-height: 1.3;
}
.text-link {
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 500;
  transition: opacity .2s;
}
.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 640px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.related-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform .2s, box-shadow .2s;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.related-card:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.related-thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #E2E8F0;
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s;
}
.related-card:hover .related-thumb img {
  transform: scale(1.04);
}
.related-body {
  padding: 20px 20px 24px;
  flex: 1;
}
.related-body .badge {
  display: inline-block;
  background: rgba(0, 194, 168, .1);
  color: var(--color-primary);
  padding: 2px 10px;
  border-radius: var(--radius-tag);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 10px;
}
.related-body h3 {
  font-size: 18px;
  margin-bottom: 8px;
  font-weight: 700;
  line-height: 1.4;
}
.related-body p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin: 0;
}
.article-cta {
  padding: 48px 0 80px;
}
.cta-box {
  background: #fff;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
@media (min-width: 768px) {
  .cta-box {
    padding: 36px 40px;
  }
}
.cta-content h3 {
  font-size: 22px;
  margin-bottom: 8px;
  font-weight: 700;
}
.cta-content p {
  color: var(--color-text-soft);
  font-size: 15px;
  margin: 0;
}
.cta-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.site-footer {
  background: #101A26;
  color: #94A3B8;
  padding: 56px 0 0;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-bottom: 40px;
}
@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 40px;
  }
}
.footer-brand .brand-logo {
  color: #fff;
  font-size: 19px;
  margin-bottom: 12px;
}
.footer-desc {
  color: #7A8B9F;
  font-size: 14px;
  line-height: 1.8;
  max-width: 280px;
  margin-top: 12px;
}
.footer-col h4 {
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-col li {
  margin-bottom: 10px;
}
.footer-col a {
  color: #94A3B8;
  font-size: 14px;
  transition: color .2s;
}
.footer-col a:hover {
  color: var(--color-primary);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: #7A8B9F;
}
.footer-bottom a {
  color: #7A8B9F;
  transition: color .2s;
}
.footer-bottom a:hover {
  color: var(--color-primary);
}
.back-top-btn {
  position: fixed;
  right: 20px;
  bottom: 24px;
  width: 36px;
  height: 36px;
  border-radius: 6px;
  background: var(--color-primary);
  color: #0F172A;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: var(--shadow-hover);
  transition: all .2s;
  z-index: 60;
}
.back-top-btn:hover {
  background: #00E0C2;
  transform: translateY(-2px);
}
.back-top-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}