/* roulang page: index */
:root{
  --bg-page:#060a13;
  --bg-secondary:#0b1120;
  --panel:rgba(255,255,255,.045);
  --panel-soft:rgba(255,255,255,.03);
  --panel-strong:rgba(255,255,255,.08);
  --border:rgba(155,195,255,.14);
  --border-light:rgba(155,210,255,.35);
  --primary:#167bff;
  --cyan:#00d1ff;
  --gradient:linear-gradient(135deg,#167bff 0%,#00d1ff 100%);
  --violet:#845eff;
  --amber:#ffc36b;
  --heading:#e8f0fe;
  --body:#c2d0e6;
  --muted:#9fb0cc;
  --weak:#8ea0bd;
  --placeholder:#6f84a3;
  --success:#43e7b8;
  --danger:#ff6b81;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 4px 20px rgba(0,0,0,.22);
  --shadow-hover:0 12px 30px rgba(0,80,255,.18);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
  --sidebar-w:260px;
  --container:1320px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg-page);
  color:var(--body);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(ellipse 800px 360px at 14% 2%,rgba(22,123,255,.13),transparent 60%),
    radial-gradient(ellipse 900px 420px at 90% 24%,rgba(2,209,255,.06),transparent 55%),
    linear-gradient(rgba(140,175,235,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(140,175,235,.04) 1px,transparent 1px);
  background-size:auto,auto,44px 44px,44px 44px;
}
a{text-decoration:none;color:inherit;transition:var(--transition,color .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease)}
img{display:block;max-width:100%}
ul,ol{list-style:none}
h1,h2,h3,h4,h5{font-weight:700;color:var(--heading);line-height:1.4}
h2{font-size:32px;line-height:1.3;letter-spacing:.5px}
h3{font-size:20px;font-weight:650}
p{text-wrap:pretty}
.container{max-width:var(--container);margin:0 auto;padding:0 28px}
.section{padding:98px 28px;scroll-margin-top:20px}
.section--soft{background:rgba(255,255,255,.018);border-top:1px solid rgba(155,195,255,.08);border-bottom:1px solid rgba(155,195,255,.08)}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
  color:#b7d9ff;background:rgba(22,123,255,.12);
  border:1px solid rgba(0,209,255,.22);letter-spacing:.8px;margin-bottom:14px;
}
.section-head{max-width:720px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-desc{color:var(--muted);font-size:15.5px;margin-top:14px;line-height:1.9}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 28px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:650;line-height:1;
  cursor:pointer;white-space:nowrap;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,filter .2s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:scale(.98)}
.btn:focus-visible{
  outline:none;box-shadow:0 0 0 3px rgba(0,180,255,.28),0 0 0 1px #167bff;
}
.btn-primary{
  background:var(--gradient);color:#fff;
  box-shadow:0 6px 24px rgba(0,130,255,.4);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 8px 28px rgba(0,150,255,.45)}
.btn-ghost{
  background:rgba(255,255,255,.05);
  color:#bfe5ff;
  border-color:rgba(0,209,255,.45);
}
.btn-ghost:hover{background:rgba(0,209,255,.12);border-color:rgba(0,209,255,.8);color:#fff}
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 12px;border-radius:999px;
  background:rgba(22,123,255,.13);color:#9be2ff;
  border:1px solid rgba(0,209,255,.24);
  font-size:12px;font-weight:600;letter-spacing:.3px;
}
.badge--violet{background:rgba(132,94,255,.13);border-color:rgba(132,94,255,.3);color:#d5c3ff}
.badge--amber{background:rgba(255,195,107,.1);border-color:rgba(255,195,107,.3);color:#ffe2ac}

.app-layout{min-height:100vh;overflow-x:hidden}
.sidebar{
  position:fixed;inset:0 auto 0 0;width:var(--sidebar-w);
  background:rgba(7,13,25,.96);
  border-right:1px solid rgba(155,195,255,.09);
  display:flex;flex-direction:column;z-index:500;
  backdrop-filter:blur(16px);
}
.brand-box{padding:28px 22px 22px;border-bottom:1px solid rgba(155,195,255,.09)}
.brand-word{
  display:inline-block;max-width:200px;
  color:#fff;font-size:18px;font-weight:800;letter-spacing:.6px;
  line-height:1.45;overflow-wrap:anywhere;
}
.brand-word small{display:block;color:var(--weak);font-size:11px;font-weight:500;letter-spacing:1.2px;margin-top:6px}
.side-nav{padding:24px 16px;display:flex;flex-direction:column;gap:6px;flex:1}
.nav-link{
  display:flex;align-items:center;gap:12px;
  min-height:46px;padding:0 16px;
  border-radius:12px;color:var(--muted);font-size:15px;font-weight:500;
  border:1px solid transparent;border-left:3px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.nav-link svg{width:18px;height:18px;flex:none;opacity:.78}
.nav-link:hover{background:rgba(255,255,255,.06);color:#e8f0fe;border-color:rgba(155,195,255,.1)}
.nav-link.active{
  background:linear-gradient(90deg,rgba(22,123,255,.2),rgba(255,255,255,.02));
  color:#fff;border-left-color:var(--primary);border-top-color:rgba(155,195,255,.12);
  border-right-color:rgba(155,195,255,.12);border-bottom-color:rgba(155,195,255,.12);
  box-shadow:0 8px 20px rgba(0,40,120,.16);
}
.nav-link.active svg{color:#79c5ff;opacity:1}
.side-footer{padding:20px 22px;border-top:1px solid rgba(155,195,255,.08)}
.side-footer p{font-size:12px;color:#6d82a3;line-height:1.8}
.main-wrap{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}

.mobile-head{display:none}
.mobile-drawer{display:none}

.hero{
  position:relative;
  padding:110px 28px 100px;
  min-height:640px;
  max-height:720px;
  display:flex;align-items:center;
  overflow:hidden;
  isolation:isolate;
}
.hero-bg{
  position:absolute;inset:0;z-index:-2;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.38;
}
.hero::before{
  content:"";
  position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(90deg,rgba(6,10,19,.82) 0%,rgba(6,10,19,.52) 48%,rgba(6,10,19,.2) 100%),
    radial-gradient(ellipse at 80% 45%,rgba(0,209,255,.13),transparent 55%),
    linear-gradient(180deg,rgba(6,10,19,.55),transparent 22%,transparent 76%,rgba(6,10,19,.9) 100%);
}
.hero::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-1px;height:160px;
  background:linear-gradient(to top,var(--bg-rgb,#060a13),transparent);z-index:1;pointer-events:none;
}
.hero-content{width:100%;position:relative;z-index:3}
.hero-panel{
  max-width:720px;
  animation:heroRise .7s ease both;
}
@keyframes heroRise{
  from{opacity:0;transform:translateY(18px)}
  to{opacity:1;transform:none}
}
.hero .badge{margin-bottom:22px;animation:heroRise .7s ease .05s both}
.hero h1{
  font-size:46px;line-height:1.22;font-weight:800;
  letter-spacing:1.4px;margin-bottom:22px;
  animation:heroRise .7s ease .1s both;
}
.hero h1 .line-light{
  background:linear-gradient(90deg,#ffffff,#9edaff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
  font-size:16.5px;line-height:1.95;color:var(--muted);
  max-width:640px;margin-bottom:32px;
  animation:heroRise .7s ease .18s both;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;animation:heroRise .7s ease .25s both}
.hero-note{margin-top:22px;color:var(--weak);font-size:13px;display:flex;align-items:center;gap:6px;animation:heroRise .7s ease .32s both}
.hero-note svg{width:15px;height:15px}

.portal-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
}
.portal-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--panel);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;
  overflow:hidden;
}
.portal-card::after{
  content:"";
  position:absolute;inset:auto 0 0 0;height:2px;
  background:var(--gradient);opacity:0;transition:opacity .2s ease;
}
.portal-card:hover::after{opacity:1}
.portal-card:hover{
  transform:translateY(-3px);
  border-color:var(--border-light);
  box-shadow:var(--shadow-hover);background:rgba(255,255,255,.06);
}
.portal-icon{
  width:46px;height:46px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(132,94,255,.15);
  border:1px solid rgba(132,94,255,.25);
  color:#c5aaff;margin-bottom:18px;
}
.portal-icon svg{width:22px;height:22px}
.portal-card h3{margin-bottom:10px}
.portal-card p{font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:18px;flex:1}
.portal-link{
  display:inline-flex;align-items:center;gap:6px;
  color:#7ccaff;font-size:13.5px;font-weight:600;
}
.portal-link svg{width:15px;height:15px;transition:transform .2s ease}
.portal-link:hover{color:#bde4ff}
.portal-link:hover svg{transform:translateX(3px)}

.scenario-wrap{overflow:hidden}
.scenario-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:76px;
}
.scenario-row:last-child{margin-bottom:0}
.scenario-media{position:relative}
.scenario-media::before{
  content:"";
  position:absolute;inset:-12px -10px auto auto;width:220px;height:220px;
  background:radial-gradient(circle,rgba(22,123,255,.22),transparent 65%);
}
.scenario-media img{
  width:100%;border-radius:24px;border:1px solid var(--border);
  box-shadow:var(--shadow);object-fit:cover;aspect-ratio:4/3;
  background:var(--bg-secondary);
}
.scenario-text .badge{margin-bottom:14px}
.scenario-text h2{margin-bottom:14px}
.scenario-text>p{color:var(--muted);font-size:15px;line-height:1.9;margin-bottom:20px}
.scenario-list{display:flex;flex-direction:column;gap:12px}
.scenario-list li{
  display:flex;gap:12px;align-items:flex-start;
  color:#cbd8ed;font-size:14.5px;line-height:1.8;
}
.check-icon{
  flex:none;width:22px;height:22px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(67,231,184,.12);border:1px solid rgba(67,231,184,.32);
  color:var(--success);margin-top:4px;
}
.check-icon svg{width:12px;height:12px}
.scenario-row.reverse .scenario-media{order:2}
.scenario-row.reverse .scenario-text{order:1}

.proof-section{position:relative;overflow:hidden}
.proof-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center bottom;opacity:.1;
}
.proof-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,var(--bg-page),rgba(6,10,19,.22),var(--bg-secondary));
}
.proof-inner{position:relative;z-index:1}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:56px}
.stat-cell{
  text-align:center;padding:30px 16px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  backdrop-filter:blur(8px);
  transition:transform .2s ease,border-color .2s ease;
}
.stat-cell:hover{transform:translateY(-3px);border-color:rgba(22,123,255,.45)}
.stat-value{
  font-size:40px;line-height:1;font-weight:800;
  background:linear-gradient(135deg,#fff,#00d1ff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  letter-spacing:1px;margin-bottom:10px;
}
.stat-cell:nth-child(2) .stat-value{background:linear-gradient(135deg,#d6c9ff,#845eff);-webkit-background-clip:text;background-clip:text}
.stat-cell:nth-child(3) .stat-value{background:linear-gradient(135deg,#ffe6be,#ffc36b);-webkit-background-clip:text;background-clip:text}
.stat-label{font-size:13.5px;color:var(--muted);letter-spacing:.4px}
.glass-quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.glass-quote{
  position:relative;background:var(--panel);border:1px solid var(--border);
  border-radius:var(--radius);padding:28px;
  backdrop-filter:blur(12px);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.glass-quote:hover{border-color:var(--border-light);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.glass-quote::before{
  content:"“";position:absolute;top:10px;left:22px;
  font-size:56px;line-height:1;color:rgba(0,209,255,.28);font-weight:800;
}
.glass-quote p{color:#dce9ff;font-size:14.5px;line-height:1.9;padding-top:26px}
.quote-user{margin-top:16px;display:flex;align-items:center;gap:10px;color:var(--weak);font-size:13px}
.avatar{
  width:30px;height:30px;border-radius:50%;
  background:linear-gradient(135deg,#167bff,#845eff);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:13px;font-weight:700;
}

.route-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.route-card{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  padding:30px;display:flex;flex-direction:column;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  position:relative;overflow:hidden;
}
.route-card:hover{border-color:var(--border-light);transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.route-card--main{
  grid-column:1/-1;
  flex-direction:row;align-items:center;gap:36px;
  background:
    radial-gradient(ellipse at 12% 0%,rgba(22,123,255,.2),transparent 50%),
    linear-gradient(90deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
}
.route-card::before{
  content:"";position:absolute;top:0;left:0;width:6px;height:100%;
  background:var(--gradient);opacity:0;transition:opacity .2s;
}
.route-card--main::before{opacity:1}
.route-title-row{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.route-card .badge{margin-left:6px}
.route-card h3{font-size:22px;font-weight:800}
.route-desc{color:var(--muted);font-size:14.5px;line-height:1.8;margin-bottom:20px}
.route-main-copy{flex:1.4;min-width:260px}
.route-side-benefits{flex:1;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.benefit-item{
  background:rgba(0,0,0,.14);border:1px solid rgba(155,195,255,.12);
  padding:16px;border-radius:12px;font-size:13.5px;color:#c3d4ea;line-height:1.7;
}
.benefit-item strong{display:block;color:#eaf4ff;font-weight:650;margin-bottom:4px}
.route-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.route-tag{
  font-size:12px;color:#aac8f0;padding:4px 11px;
  border:1px solid rgba(155,195,255,.2);border-radius:999px;background:rgba(255,255,255,.04);
}
.route-footer{margin-top:auto}
.side-route-meta{margin-bottom:18px;font-size:13px;color:var(--weak)}
.route-footer .btn{margin-top:8px}
.route-card .btn{width:fit-content}

.news-section{
  background:linear-gradient(180deg,rgba(11,17,32,.3),transparent 40%),
  radial-gradient(ellipse 900px 260px at 20% 20%,rgba(22,123,255,.08),transparent);
}
.news-page-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;
}
.news-feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-bottom:14px}
.news-feature-card{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;position:relative;overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .2s,border-color .2s,box-shadow .2s;
}
.news-feature-card:hover{border-color:var(--border-light);transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.news-feature-card .badge{align-self:flex-start;margin-bottom:14px}
.news-feature-card h3{
  font-size:17.5px;line-height:1.6;margin-bottom:10px;
  color:#eaf4ff;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-feature-card p{
  color:var(--muted);font-size:13.5px;line-height:1.8;display:-webkit-box;flex:1;
  -webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px;
}
.news-feature-meta{display:flex;align-items:center;gap:14px;color:var(--weak);font-size:12px}
.news-feature-meta time{display:inline-flex;align-items:center;gap:5px}
.news-feature-meta svg{width:14px;height:14px}
.news-list{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;margin-top:8px;
}
.news-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr) 150px 180px;
  align-items:center;gap:18px;
  padding:16px 20px;
  border-bottom:1px solid rgba(155,195,255,.09);
  transition:background .2s ease;
}
.news-row:last-child{border-bottom:none}
.news-row:hover{background:rgba(22,123,255,.07)}
.news-row-title{
  color:#d9e9ff;font-weight:700;font-size:15px;line-height:1.6;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.news-row-title:hover{color:#68aeff}
.news-row-sum{
  color:var(--weak);font-size:13px;line-height:1.7;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.news-row-badge{font-size:12px;color:#7db9ef;justify-self:start}
.news-row time{color:var(--weak);font-size:12.5px;justify-self:end}
.news-empty{
  background:var(--panel);border:1px dashed rgba(155,195,255,.28);
  border-radius:var(--radius);padding:48px 24px;text-align:center;color:var(--weak);
}

.faq-layout{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start}
.faq-item{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:rgba(155,210,255,.3);box-shadow:0 6px 18px rgba(0,0,0,.14)}
.faq-item summary{
  list-style:none;cursor:pointer;user-select:none;
  padding:22px 24px 20px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-size:16px;font-weight:600;color:#dcebff;
  transition:color .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::marker{content:""}
.faq-item summary:hover{color:#fff}
.faq-btn{
  flex:none;width:24px;height:24px;border-radius:50%;
  border:1px solid rgba(0,209,255,.45);
  display:flex;align-items:center;justify-content:center;
  color:#7dd9ff;background:rgba(0,209,255,.06);
  position:relative;transition:transform .2s,background .2s;
}
.faq-btn::after{
  content:"+";font-size:16px;line-height:1;font-weight:400;
  transition:transform .2s;
}
.faq-item[open] .faq-btn{transform:rotate(45deg);background:rgba(0,209,255,.16)}
.faq-answer{
  padding:0 24px 24px 24px;
  color:var(--muted);font-size:14.5px;line-height:1.9;
}
.faq-answer p{margin-bottom:10px}
.faq-answer p:last-child{margin-bottom:0}

.cta-section{padding:60px 28px 90px}
.cta-panel{
  position:relative;
  background:linear-gradient(120deg,rgba(22,123,255,.2),rgba(132,94,255,.12) 50%,rgba(0,209,255,.8)),
    radial-gradient(ellipse 400px 160px at 14% 20%,rgba(0,209,255,.28),transparent 60%);
  border:1px solid rgba(155,210,255,.32);
  border-radius:28px;padding:62px 56px;
  text-align:center;overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(rgba(160,200,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(160,200,255,.05) 1px,transparent 1px);
  background-size:36px 36px;
}
.cta-inner{position:relative;z-index:1}
.cta-panel h2{font-size:30px;margin-bottom:14px}
.cta-panel p{color:var(--muted);max-width:620px;margin:0 auto 30px;font-size:15px;line-height:1.9}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.site-footer{
  border-top:1px solid rgba(155,195,255,.09);
  background:linear-gradient(180deg,transparent,rgba(11,17,32,.72));
  margin-top:auto;
}
.footer-cols{
  max-width:var(--container);margin:0 auto;
  padding:60px 28px 34px;
  display:grid;grid-template-columns:1.7fr 1fr 1.2fr 1.3fr;gap:40px;
}
.footer-brand-name{color:#fff;font-size:18px;font-weight:800;letter-spacing:.4px;margin-bottom:12px}
.footer-cols p,
.footer-cols li{font-size:13.5px;color:var(--weak);line-height:1.9}
.footer-title{
  font-size:14.5px;color:#c9ddfa;font-weight:700;margin-bottom:16px;
  letter-spacing:.5px;
}
.footer-links li{margin-bottom:9px}
.footer-links a{color:var(--weak);font-size:13.5px}
.footer-links a:hover{color:#78c8ff}
.safe-list li{
  display:flex;gap:8px;align-items:flex-start;color:var(--weak);
  font-size:13px;margin-bottom:8px;line-height:1.7;
}
.safe-list svg{width:13px;height:13px;flex:none;margin-top:5px;color:var(--success)}
.footer-bottom{
  max-width:var(--container);margin:0 auto;padding:20px 28px;
  border-top:1px solid rgba(155,195,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--weak);
}
.footer-bottom a{color:#7999c0}
.footer-bottom a:hover{color:#bfe0ff}

@keyframes mobileDrawerIn{from{opacity:0;transform:translateX(-100%)}to{opacity:1;transform:none}}
@keyframes mobileDrawerOut{from{opacity:1;transform:none}to{opacity:0;transform:translateX(-100%)}}

@media (max-width:1199px){
  .sidebar{width:220px}
  .main-wrap{margin-left:220px}
  .brand-word{font-size:16px}
  .portal-grid{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .news-row{grid-template-columns:minmax(0,1.3fr) 1fr 120px 150px;gap:12px}
}
@media (max-width:991px){
  .sidebar{display:none}
  .main-wrap{margin-left:0}
  .mobile-head{
    position:sticky;top:0;z-index:600;display:flex;align-items:center;justify-content:space-between;
    height:64px;padding:0 18px;
    background:rgba(6,10,19,.88);backdrop-filter:blur(16px);
    border-bottom:1px solid rgba(155,195,255,.1);
  }
  .mobile-brand{font-size:15.5px;color:#fff;font-weight:800;letter-spacing:.4px;display:flex;align-items:center;gap:8px}
  .mobile-brand svg{width:20px;height:20px;color:#4aa8ff}
  .menu-btn{
    width:42px;height:42px;border-radius:10px;
    background:rgba(255,255,255,.05);border:1px solid var(--border);
    color:#cbe8ff;display:flex;align-items:center;justify-content:center;cursor:pointer;
    transition:border-color .2s,background .2s;
  }
  .menu-btn:hover{background:rgba(255,255,255,.1);border-color:rgba(0,209,255,.4)}
  .menu-btn svg{width:20px;height:20px}
  .mobile-drawer{
    position:fixed;top:0;left:0;bottom:0;width:280px;z-index:1000;
    background:#080e1c;border-right:1px solid rgba(155,195,255,.12);
    display:flex;flex-direction:column;padding:20px 16px;
    transform:translateX(-100%);opacity:0;
    transition:opacity .25s ease,transform .25s ease;
  }
  .mobile-drawer.open{
    animation:mobileDrawerIn .25s ease both;
  }
  .drawer-head{display:flex;justify-content:space-between;align-items:center;padding:4px 4px 16px;border-bottom:1px solid rgba(155,195,255,.1);margin-bottom:12px}
  .drawer-brand{font-size:15px;color:#fff;font-weight:800;padding-left:6px}
  .drawer-close{
    width:34px;height:34px;border-radius:9px;
    background:rgba(255,255,255,.05);border:1px solid var(--border);color:var(--muted);
    display:flex;align-items:center;justify-content:center;cursor:pointer;
  }
  .drawer-close svg{width:17px;height:17px}
  .drawer-nav{display:flex;flex-direction:column;gap:4px;margin-top:14px}
  .drawer-nav .nav-link{font-size:15px;padding:0 14px}
  .drawer-meta{margin-top:auto;padding:18px 10px 4px;color:var(--weak);font-size:12px;border-top:1px solid rgba(155,195,255,.09)}
  .drawer-overlay{
    position:fixed;inset:0;background:rgba(0,0,0,.58);z-index:900;
    opacity:0;visibility:hidden;backdrop-filter:blur(3px);transition:all .25s;
  }
  .drawer-overlay.show{opacity:1;visibility:visible}
  .hero{padding:90px 28px 84px;min-height:0}
  .hero h1{font-size:36px}
  .scenario-row{grid-template-columns:1fr;gap:38px;margin-bottom:56px}
  .scenario-row.reverse .scenario-media{order:0}
  .scenario-row.reverse .scenario-text{order:1}
  .section{padding:72px 20px}
  .container,.footer-cols,.footer-bottom{padding-left:20px;padding-right:20px}
  .route-card--main{flex-direction:column;align-items:flex-start;gap:24px}
  .route-side-benefits{width:100%}
  .faq-layout{grid-template-columns:1fr}
  .news-page-head{flex-direction:column;align-items:flex-start;gap:6px}
  .footer-cols{grid-template-columns:1fr 1fr}
  .cta-panel{padding:48px 24px}
}
@media (max-width:767px){
  .portal-grid{grid-template-columns:1fr}
  .news-feature-grid{grid-template-columns:1fr}
  .glass-quote-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .section{scroll-margin-top:68px}
  .section-head{margin-bottom:32px}
  .hero h1{font-size:30px}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .news-row{
    grid-template-columns:1fr;
    padding:14px 16px;gap:6px;
  }
  .news-row-badge{justify-self:start}
  .news-row time{justify-self:start}
  .route-side-benefits{grid-template-columns:1fr}
  .route-tags{flex-wrap:wrap}
  .route-card .btn{width:100%}
  .cta-actions{flex-direction:column;align-items:stretch}
}
@media (max-width:575px){
  .hero{padding:56px 20px 64px}
  .hero h1{font-size:26px;letter-spacing:.4px}
  .hero-lead{font-size:15px}
  .section{padding:56px 16px}
  .section-desc{font-size:14.5px}
  h2{font-size:25px}
  h3{font-size:18px}
  .footer-cols{grid-template-columns:1fr;gap:28px;padding-top:44px}
  .brand-word{font-size:16px}
  .mobile-brand{font-size:13.8px}
  .cta-panel{padding:40px 20px;border-radius:20px}
  .stat-value{font-size:32px}
  .hero-note{flex-wrap:wrap}
}

/* roulang page: category1 */
:root{
    --bg-deep:#060a13;
    --bg-secondary:#0b1120;
    --panel:rgba(255,255,255,0.05);
    --panel-strong:rgba(255,255,255,0.08);
    --line:rgba(155,195,255,0.14);
    --line-bright:rgba(155,210,255,0.35);
    --primary:#167bff;
    --primary-2:#00d1ff;
    --accent:#845eff;
    --highlight:#ffc36b;
    --text-hero:#e8f0fe;
    --text-strong:#ccd8ec;
    --text-body:#b4c5df;
    --text-muted:#8ea0bd;
    --text-faint:#6f84a3;
    --success:#43e7b8;
    --warning:#ff6b81;
    --radius-card:16px;
    --radius-sm:10px;
    --radius-pill:999px;
    --shadow-card:0 4px 20px rgba(0,0,0,0.22);
    --shadow-hover:0 12px 30px rgba(0,80,255,0.18);
    --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
    --sidebar-w:260px;
    --section-space:96px;
    --content-w:1200px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:
      radial-gradient(circle at 18% 0%, rgba(0,120,255,0.10), transparent 32%),
      radial-gradient(circle at 82% 10%, rgba(132,94,255,0.08), transparent 26%),
      linear-gradient(180deg, #060a13 0%, #070b16 50%, #060a13 100%);
    color:var(--text-body);
    font-family:var(--font);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button,input,textarea{font-family:inherit;}
  ul{list-style:none;margin:0;padding:0;}
  h1,h2,h3,h4,p{margin:0;}
  .skip-link{
    position:absolute;
    left:16px;
    top:-80px;
    z-index:1200;
    background:#0c1526;
    padding:10px 18px;
    border-radius:10px;
    color:#fff;
    border:1px solid var(--line-bright);
    transition:top .2s;
  }
  .skip-link:focus{top:16px;}
  :focus-visible{
    outline:3px solid rgba(0,209,255,0.7);
    outline-offset:3px;
    border-radius:6px;
  }

  .app-shell{display:flex;min-height:100vh;}
  .mobile-topbar{display:none;}
  .sidebar-backdrop{display:none;}

  .app-sidebar{
    width:var(--sidebar-w);
    flex:0 0 var(--sidebar-w);
    background:
      linear-gradient(180deg, rgba(11,17,32,0.98), rgba(8,13,24,0.98));
    border-right:1px solid var(--line);
    height:100vh;
    position:sticky;
    top:0;
    display:flex;
    flex-direction:column;
    padding:24px 16px 20px;
    overflow-y:auto;
    backdrop-filter:blur(12px);
    z-index:1100;
  }
  .aside-inner{display:flex;flex-direction:column;height:100%;min-height:420px;}
  .aside-logo{
    display:flex;
    align-items:center;
    gap:10px;
    padding:8px 10px 22px;
    border-bottom:1px solid rgba(155,195,255,0.10);
  }
  .logo-badge{
    width:40px;
    height:40px;
    flex:0 0 40px;
    border-radius:12px;
    background:linear-gradient(135deg, var(--primary), var(--primary-2));
    display:flex;
    align-items:center;
    justify-content:center;
    box-shadow:0 6px 20px rgba(22,123,255,0.42);
  }
  .logo-badge svg{width:22px;height:22px;color:#fff;stroke:#fff;}
  .logo-text{
    color:var(--text-hero);
    font-size:16px;
    font-weight:800;
    line-height:1.35;
    letter-spacing:0.01em;
  }
  .logo-sub{
    color:var(--text-faint);
    font-size:11px;
    margin-top:2px;
    letter-spacing:0.06em;
  }
  .side-nav{
    display:flex;
    flex-direction:column;
    gap:6px;
    padding:18px 0 10px;
    flex:1;
  }
  .nav-link{
    display:flex;
    align-items:center;
    gap:12px;
    height:48px;
    padding:0 14px;
    border-radius:14px;
    color:var(--text-muted);
    font-size:15px;
    font-weight:500;
    border:1px solid transparent;
    transition:all .2s ease;
    position:relative;
  }
  .nav-link svg{
    width:20px;
    height:20px;
    flex:0 0 20px;
    color:var(--text-faint);
    transition:color .2s ease;
  }
  .nav-link:hover{
    background:rgba(255,255,255,0.06);
    color:var(--text-hero);
  }
  .nav-link:hover svg{color:var(--primary-2);}
  .nav-link.active{
    background:linear-gradient(90deg, rgba(22,123,255,0.16), rgba(0,209,255,0.05));
    border-color:rgba(0,209,255,0.22);
    color:var(--text-hero);
    font-weight:700;
  }
  .nav-link.active svg{
    color:var(--primary-2);
  }
  .nav-link.active::before{
    content:"";
    position:absolute;
    left:-16px;
    top:12px;
    bottom:12px;
    width:3px;
    border-radius:0 6px 6px 0;
    background:linear-gradient(180deg,var(--primary),var(--primary-2));
    box-shadow:0 0 12px rgba(0,209,255,0.6);
  }
  .aside-foot{
    border-top:1px solid rgba(155,195,255,0.10);
    padding-top:16px;
    color:var(--text-faint);
    font-size:12px;
    line-height:1.7;
  }
  .aside-foot a{color:var(--text-muted);}
  .aside-foot a:hover{color:var(--primary-2);}
  .sidebar-hint span{
    display:block;
    font-size:11px;
    color:var(--text-faint);
    margin-top:4px;
  }

  .app-main{
    flex:1;
    min-width:0;
    display:flex;
    flex-direction:column;
  }
  .main-inner{
    width:100%;
    max-width:var(--content-w);
    margin:0 auto;
    padding-left:clamp(24px, 4vw, 52px);
    padding-right:clamp(24px, 4vw, 52px);
  }

  /* Hero */
  .category-hero{
    position:relative;
    padding:92px 0 70px;
    overflow:hidden;
    background:
      linear-gradient(180deg, rgba(6,10,19,0.88), rgba(6,10,19,0.74), rgba(6,10,19,0.94)),
      url('/assets/images/backpic/back-1.webp') no-repeat center 35%/cover;
    border-bottom:1px solid var(--line);
  }
  .category-hero::after{
    content:"";
    position:absolute;
    inset:auto 0 0 0;
    height:100px;
    background:linear-gradient(180deg, transparent, var(--bg-deep));
    pointer-events:none;
  }
  .hero-inner{
    position:relative;
    z-index:2;
    max-width:1200px;
    margin:0 auto;
    padding-left:clamp(24px, 4vw, 52px);
    padding-right:clamp(24px, 4vw, 52px);
  }
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    flex-wrap:wrap;
    font-size:14px;
    color:var(--text-muted);
    margin-bottom:30px;
  }
  .breadcrumb a{color:var(--text-muted);transition:color .2s;}
  .breadcrumb a:hover{color:var(--primary-2);}
  .breadcrumb span{color:var(--text-faint);}
  .hero-badge{
    display:inline-flex;
    align-items:center;
    gap:8px;
    border-radius:999px;
    padding:7px 16px;
    background:rgba(255,255,255,0.07);
    border:1px solid rgba(0,209,255,0.26);
    color:var(--primary-2);
    font-size:13px;
    font-weight:600;
    letter-spacing:0.02em;
    margin-bottom:18px;
  }
  .hero-badge i{display:block;width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 10px var(--success);}
  .hero-title{
    color:var(--text-hero);
    font-size:clamp(34px, 4.2vw, 54px);
    font-weight:800;
    line-height:1.2;
    max-width:820px;
  }
  .hero-title-punch{
    color:transparent;
    background:linear-gradient(90deg,var(--primary-2),#9ccbff);
    -webkit-background-clip:text;
    background-clip:text;
  }
  .hero-desc{
    margin:22px 0 34px;
    max-width:720px;
    color:#c5d5ec;
    font-size:16px;
    line-height:1.9;
  }
  .hero-actions{
    display:flex;
    gap:14px;
    flex-wrap:wrap;
    align-items:center;
  }
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 28px;
    border-radius:10px;
    font-weight:650;
    font-size:15px;
    border:1px solid transparent;
    cursor:pointer;
    transition:all .2s ease;
  }
  .btn svg{width:18px;height:18px;}
  .btn-primary{
    background:linear-gradient(135deg,#167bff,#00d1ff);
    color:#fff;
    box-shadow:0 6px 24px rgba(0,130,255,0.36);
  }
  .btn-primary:hover{
    filter:brightness(1.1);
    box-shadow:0 8px 30px rgba(0,160,255,0.55);
  }
  .btn-primary:active{transform:scale(0.98);}
  .btn-ghost{
    background:rgba(255,255,255,0.04);
    border:1px solid rgba(0,209,255,0.45);
    color:#e8f0fe;
  }
  .btn-ghost:hover{
    background:rgba(0,209,255,0.10);
    border-color:rgba(0,209,255,0.8);
  }
  .btn-ghost:active{transform:scale(0.98);}
  .hero-tip{
    margin-top:22px;
    color:var(--text-muted);
    font-size:13px;
    display:flex;
    align-items:center;
    gap:8px;
  }
  .hero-tip i{
    width:6px;height:6px;border-radius:50%;
    background:var(--primary-2);
  }

  /* Section common */
  .section{
    padding:var(--section-space) 0;
    position:relative;
  }
  .section.tint{background:rgba(11,17,32,.44);}
  .section.deco::before{
    content:"";
    position:absolute;
    left:0;
    right:0;
    top:0;
    height:1px;
    background:linear-gradient(90deg, transparent, rgba(155,195,255,0.2), transparent);
  }
  .section-head{
    max-width:760px;
    margin-bottom:44px;
  }
  .eyebrow{
    color:var(--primary-2);
    font-size:13px;
    letter-spacing:0.12em;
    font-weight:700;
    margin-bottom:10px;
    display:inline-block;
  }
  .section-head h2{
    color:var(--text-hero);
    font-size:clamp(26px, 3vw, 36px);
    line-height:1.35;
    font-weight:700;
    margin-bottom:16px;
  }
  .section-head p{
    color:var(--text-muted);
    font-size:15px;
    line-height:1.8;
  }

  /* numbered flow */
  .steps-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:48px;
    align-items:start;
  }
  .step-rail{
    border-radius:18px;
    overflow:hidden;
    background:rgba(255,255,255,0.04);
    border:1px solid var(--line);
  }
  .step-rail-head{
    padding:22px 24px;
    background:rgba(255,255,255,0.04);
    border-bottom:1px solid var(--line);
    color:var(--text-hero);
    font-weight:700;
    font-size:17px;
    display:flex;
    align-items:center;
    gap:12px;
  }
  .step-rail-head svg{width:21px;height:21px;color:var(--primary-2);}
  .step-item{
    display:flex;
    gap:16px;
    padding:20px 24px;
    border-bottom:1px solid rgba(155,195,255,0.10);
  }
  .step-item:last-child{border-bottom:none;}
  .step-item:hover{background:rgba(255,255,255,0.04);}
  .step-num{
    flex:0 0 42px;
    width:42px;
    height:42px;
    border-radius:13px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:16px;
    font-weight:800;
    color:var(--primary-2);
    background:rgba(0,209,255,0.12);
    border:1px solid rgba(0,209,255,0.35);
  }
  .step-item-body h3{
    color:var(--text-hero);
    font-size:16px;
    font-weight:700;
    margin-bottom:6px;
  }
  .step-item-body p{
    font-size:14px;
    color:var(--text-muted);
    line-height:1.7;
  }
  .guide-panels{
    display:grid;
    gap:18px;
  }
  .guide-card{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:16px;
    padding:24px;
    display:flex;
    gap:16px;
    transition:transform .25s ease, border-color .25s ease, box-shadow .25s;
    box-shadow:var(--shadow-card);
  }
  .guide-card:hover{
    transform:translateY(-3px);
    border-color:rgba(155,210,255,0.38);
    box-shadow:var(--shadow-hover);
  }
  .guide-icon{
    flex:0 0 44px;
    width:44px;
    height:44px;
    border-radius:12px;
    display:flex;
    align-items:center;
    justify-content:center;
    background:rgba(132,94,255,0.16);
    border:1px solid rgba(132,94,255,0.3);
  }
  .guide-icon svg{
    width:22px;
    height:22px;
    stroke:var(--accent);
  }
  .guide-card:nth-child(2) .guide-icon{
    background:rgba(0,209,255,0.12);
    border-color:rgba(0,209,255,0.25);
  }
  .guide-card:nth-child(2) .guide-icon svg{stroke:var(--primary-2);}
  .guide-card-content h3{
    color:var(--text-hero);
    font-size:16px;
    font-weight:700;
    margin-bottom:8px;
  }
  .guide-card-content p{
    color:var(--text-muted);
    font-size:14px;
    line-height:1.75;
  }
  .guide-tag{
    display:inline-flex;
    margin-top:12px;
    padding:3px 12px;
    color:#cfe1ff;
    background:rgba(0,122,255,0.14);
    border-radius:999px;
    font-size:12px;
    font-weight:600;
  }

  /* split feature */
  .split-wrap{
    display:grid;
    grid-template-columns:1.05fr .95fr;
    align-items:center;
    gap:54px;
    margin-bottom:64px;
  }
  .split-wrap:last-child{margin-bottom:0;}
  .split-media{
    position:relative;
    border-radius:18px;
    overflow:hidden;
    border:1px solid var(--line);
  }
  .split-media img{
    width:100%;
    object-fit:cover;
    aspect-ratio:16/11;
  }
  .media-overlay{
    position:absolute;
    bottom:0;
    left:0;
    right:0;
    background:linear-gradient(180deg, rgba(6,10,19,0), rgba(6,10,19,0.9));
    padding:40px 18px 16px;
  }
  .media-tag{
    color:var(--primary-2);
    font-size:13px;
    font-weight:600;
    letter-spacing:.02em;
  }
  .split-content h3{
    color:var(--text-hero);
    font-size:24px;
    line-height:1.4;
    font-weight:700;
    margin-bottom:16px;
  }
  .split-content p{
    color:var(--text-muted);
    font-size:15px;
    line-height:1.85;
    margin-bottom:16px;
  }
  .check-list li{
    display:flex;
    gap:12px;
    padding:8px 0;
    color:var(--text-muted);
    font-size:14px;
    line-height:1.7;
  }
  .check-list svg{
    width:19px;
    height:19px;
    flex:0 0 19px;
    stroke:var(--success);
    margin-top:5px;
  }

  /* status mini cards */
  .mini-card{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:16px;
    padding:24px;
    box-shadow:var(--shadow-card);
    transition:translateY/2;
  }
  .mini-card:hover{
    border-color:var(--line-bright);
    box-shadow:var(--shadow-hover);
    transform:translateY(-3px);
    transition:all .25s;
  }
  .mini-meta{
    color:var(--highlight);
    font-size:12px;
    font-weight:700;
    letter-spacing:.06em;
    margin-bottom:8px;
  }
  .mini-card h3{
    color:var(--text-hero);
    font-size:18px;
    margin-bottom:10px;
    font-weight:700;
  }
  .mini-card p{
    color:var(--text-muted);
    font-size:14px;
    line-height:1.75;
    margin:0;
  }
  .three-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:18px;
  }

  /* safety list */
  .safe-listing{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:16px;
    padding:26px;
  }
  .safe-listing h3{
    color:var(--text-hero);
    font-size:17px;
    margin-bottom:12px;
  }
  .safe-listing li{
    padding:7px 0;
    font-size:14px;
    color:var(--text-muted);
    display:flex;
    gap:9px;
  }
  .safe-listing svg{
    width:18px;
    height:18px;
    flex:0 0 18px;
    color:var(--warning);
    margin-top:7px;
  }

  /* faq */
  .faq-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
  }
  .faq-item{
    background:rgba(255,255,255,0.05);
    border:1px solid var(--line);
    border-radius:16px;
    overflow:hidden;
    transition:border-color .2s, box-shadow .3s;
  }
  .faq-item:hover{
    border-color:rgba(155,210,255,0.28);
  }
  .faq-header{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    width:100%;
    background:transparent;
    border:0;
    padding:20px 24px;
    cursor:pointer;
    color:var(--text-strong);
    font-size:16px;
    font-weight:650;
    line-height:1.45;
    text-align:left;
  }
  .faq-header span{flex:1;}
  .faq-ico{
    display:block;
    width:26px;
    height:26px;
    flex:0 0 26px;
    border-radius:50%;
    border:1px solid rgba(0,209,255,0.35);
    color:var(--primary-2);
    font-style:normal;
    position:relative;
    transition:all .2s;
  }
  .faq-ico::before,.faq-ico::after{
    content:"";
    position:absolute;
    left:50%;
    top:50%;
    transform:translate(-50%,-50%);
    background:currentColor;
    border-radius:2px;
  }
  .faq-ico::before{width:12px;height:2px;}
  .faq-ico::after{width:2px;height:12px;}
  details[open] .faq-ico::after{opacity:0;}
  details[open] .faq-ico{
    background:rgba(0,209,255,0.14);
    border-color:rgba(0,209,255,0.5);
    color:var(--primary-2);
  }
  .faq-body{
    padding:0 24px 22px;
    color:var(--text-muted);
    font-size:14px;
    line-height:1.85;
  }
  .faq-item + .faq-item{margin:0;}
  .faq-note{
    margin-top:24px;
    text-align:center;
    color:var(--text-faint);
    font-size:13px;
  }

  /* CTA */
  .cta-panel{
    background:rgba(255,255,255,0.05);
    border:1px solid var(--line);
    border-radius:24px;
    overflow:hidden;
    padding:clamp(32px, 5vw, 72px);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:44px;
    position:relative;
    box-shadow:0 8px 40px rgba(0,0,0,0.18);
  }
  .cta-panel::before{
    content:"";
    position:absolute;
    inset:0;
    background:radial-gradient(circle at 8% 15%, rgba(22,123,255,0.16), transparent 40%),
               radial-gradient(circle at 90% 100%, rgba(0,209,255,0.12), transparent 38%);
    pointer-events:none;
  }
  .cta-info{
    position:relative;
    z-index:1;
  }
  .cta-info h2{
    color:var(--text-hero);
    font-size:clamp(22px, 3vw, 34px);
    line-height:1.35;
    margin-bottom:14px;
    font-weight:750;
  }
  .cta-info p{
    color:var(--text-muted);
    font-size:15px;
    line-height:1.8;
    max-width:680px;
  }
  .cta-btns{
    position:relative;
    z-index:1;
    display:flex;
    flex-direction:column;
    gap:12px;
    align-items:flex-start;
  }

  /* footer */
  .site-footer{
    margin-top:auto;
    background:#080d19;
    border-top:1px solid var(--line);
    padding:64px clamp(24px, 4vw, 52px) 32px;
    width:100%;
  }
  .footer-cols{
    max-width:1200px;
    margin:0 auto;
    display:grid;
    grid-template-columns:1.2fr 0.8fr 0.9fr 1.1fr;
    gap:40px;
  }
  .footer-brand-name{
    color:var(--text-hero);
    font-size:18px;
    font-weight:800;
    margin-bottom:12px;
  }
  .footer-cols p{
    color:var(--text-muted);
    font-size:13px;
    line-height:1.85;
    margin:0;
  }
  .footer-title{
    color:var(--text-strong);
    font-size:15px;
    font-weight:700;
    margin-bottom:14px;
  }
  .footer-links li{
    margin-bottom:6px;
  }
  .footer-links a{
    color:var(--text-muted);
    font-size:14px;
    transition:color .2s, padding-left .2s;
  }
  .footer-links a:hover{
    color:var(--primary-2);
    padding-left:3px;
  }
  .safe-list li{
    display:flex;
    font-size:13px;
    color:var(--text-muted);
    gap:8px;
    margin-bottom:10px;
    line-height:1.65;
  }
  .safe-list svg{
    width:17px;
    height:17px;
    flex:0 0 17px;
    stroke:var(--success);
    margin-top:6px;
  }
  .footer-bottom{
    max-width:1200px;
    margin:44px auto 0;
    border-top:1px solid rgba(155,195,255,0.10);
    padding-top:24px;
    display:flex;
    justify-content:space-between;
    gap:12px;
    flex-wrap:wrap;
    color:var(--text-faint);
    font-size:13px;
  }
  .footer-bottom a{color:var(--text-muted);}
  .footer-bottom a:hover{color:var(--primary-2);}

  @media (max-width:1199px){
    :root{
      --sidebar-w:220px;
      --section-space:80px;
    }
    .steps-grid{
      gap:30px;
    }
    .split-wrap{
      gap:32px;
    }
  }

  @media (max-width:991px){
    :root{
      --section-space:58px;
    }
    .app-shell{display:block;}
    .mobile-topbar{
      display:flex;
      position:fixed;
      top:0;
      left:0;
      z-index:1300;
      width:100%;
      height:64px;
      background:rgba(9,13,25,0.88);
      border-bottom:1px solid var(--line);
      align-items:center;
      justify-content:space-between;
      padding:0 16px;
      backdrop-filter:blur(16px);
    }
    .mobile-brand{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .mobile-brand svg{
      width:18px;height:18px;
    }
    .menu-btn{
      width:42px;
      height:42px;
      display:flex;
      border:1px solid var(--line);
      background:rgba(255,255,255,0.05);
      border-radius:10px;
      align-items:center;
      justify-content:center;
      cursor:pointer;
      color:var(--text-hero);
      transition:background .2s, border-color .2s;
    }
    .menu-btn:hover{
      background:rgba(255,255,255,0.12);
      border-color:rgba(155,210,255,0.4);
    }
    .menu-btn svg{
      width:24px;
      height:24px;
    }
    .sidebar-backdrop{
      display:block;
      position:fixed;
      inset:0;
      background:rgba(3,5,10,0.68);
      backdrop-filter:blur(4px);
      opacity:0;
      visibility:hidden;
      transition:opacity .25s, visibility .25s;
      z-index:1400;
    }
    .app-sidebar{
      position:fixed;
      inset:0 auto 0 0;
      width:min(330px, 86vw);
      height:100dvh;
      transform:translateX(-105%);
      transition:transform .3s cubic-bezier(.4,0,.2,1);
      z-index:1500;
      border-right:1px solid var(--line);
      box-shadow:0 0 50px rgba(0,0,0,0.4);
    }
    body.sidebar-open .app-sidebar{
      transform:none;
    }
    body.sidebar-open .sidebar-backdrop{
      opacity:1;
      visibility:visible;
    }
    .app-main{
      width:100%;
      padding-top:64px;
    }
    .category-hero{
      padding:56px 0 54px;
    }
    .split-wrap{
      grid-template-columns:1fr;
      gap:26px;
      margin-bottom:50px;
    }
    .split-media img{
      aspect-ratio:16/10;
    }
    .steps-grid{
      grid-template-columns:1fr;
    }
    .three-grid,.faq-grid{
      grid-template-columns:1fr;
    }
    .cta-panel{
      flex-direction:column;
      align-items:flex-start;
      gap:26px;
    }
    .footer-cols{
      grid-template-columns:1fr 1fr;
      gap:28px;
    }
  }

  @media (max-width:575px){
    .hero-actions{
      align-items:stretch;
      flex-direction:column;
    }
    .btn{
      width:100%;
    }
    .footer-cols{
      grid-template-columns:1fr;
      gap:24px;
    }
    .footer-bottom{
      flex-direction:column;
    }
    .section{
      scroll-margin-top:84px;
    }
    .cta-panel{
      padding:28px 20px;
    }
    .card-horizontal{
      grid-template-columns:1fr;
    }
    .step-item,.guide-card{
      padding:16px;
    }
  }

/* roulang page: article */
:root {
  --bg-deep: #060a13;
  --bg-panel: #0b1120;
  --bg-soft: rgba(255, 255, 255, 0.05);
  --bg-hover: rgba(255, 255, 255, 0.07);
  --border-glass: rgba(155, 195, 255, 0.14);
  --border-light: rgba(255, 255, 255, 0.12);
  --primary: #167bff;
  --cyan: #00d1ff;
  --violet: #845eff;
  --gold: #ffc36b;
  --text-hi: #e8f0fe;
  --text-body: #b9c8e2;
  --text-muted: #9fb0cc;
  --text-weak: #7e92b0;
  --success: #43e7b8;
  --danger: #ff6b81;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.22);
  --shadow-hover: 0 12px 30px rgba(0, 80, 255, 0.18);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-body);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font: inherit;
  border: 0;
  background: none;
  cursor: pointer;
  color: inherit;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  color: var(--text-hi);
  font-weight: 700;
}

ul, ol, dl, p, figure, blockquote, pre {
  margin: 0;
  padding: 0;
}

.site-shell {
  display: flex;
  min-height: 100vh;
  width: 100%;
}

.side-navbar {
  width: 260px;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 300;
  display: flex;
  flex-direction: column;
  background: rgba(6, 10, 18, 0.96);
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.side-brand {
  padding: 30px 20px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 13px;
}

.brand-icon {
  flex: none;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, #167bff 0%, #00d1ff 100%);
  border-radius: 13px;
  box-shadow: 0 0 26px rgba(0, 120, 255, 0.4);
}

.brand-text {
  min-width: 0;
}

.brand-title {
  font-size: 18px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: 0.4px;
  color: var(--text-hi);
  white-space: nowrap;
}

.brand-sub {
  margin-top: 2px;
  font-size: 12px;
  color: var(--text-weak);
  letter-spacing: 1.6px;
}

.side-scroll {
  flex: 1;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
}

.nav-label {
  padding: 20px 24px 8px;
  font-size: 12px;
  color: var(--text-weak);
  letter-spacing: 2px;
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 6px 12px 18px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 47px;
  padding: 0 14px;
  border-radius: 12px;
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: background .2s ease, border-color .2s ease, color .2s ease, transform .1s ease;
}

.nav-link svg {
  width: 18px;
  height: 18px;
  flex: none;
}

.nav-link:hover,
.nav-link:focus-visible {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-hi);
  border-color: rgba(255, 255, 255, 0.08);
  outline: none;
}

.nav-link:active {
  transform: scale(0.98);
}

.nav-link.active {
  background: linear-gradient(135deg, rgba(22, 123, 255, 0.28), rgba(0, 209, 255, 0.1));
  border-color: rgba(0, 209, 255, 0.2);
  color: var(--text-hi);
  font-weight: 650;
  box-shadow: inset 0 0 0 rgba(0, 0, 0, 0), 0 0 0 rgba(0, 0, 0, 0);
}

.nav-link.active::before {
  content: "";
  width: 3px;
  height: 18px;
  margin-left: -2px;
  margin-right: 12px;
  background: linear-gradient(180deg, var(--primary), var(--cyan));
  border-radius: 0 999px 999px 0;
}

.side-footer-note {
  margin: 12px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  font-size: 12px;
  line-height: 1.8;
  color: var(--text-weak);
}

.side-footer-note strong {
  display: block;
  color: var(--text-body);
  margin-bottom: 2px;
  font-size: 13px;
}

.menu-close-btn {
  display: none;
}

.menu-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(2, 5, 10, 0.68);
  z-index: 290;
  display: none;
  backdrop-filter: blur(2px);
}

body.menu-open .menu-backdrop {
  display: block;
}

.mobile-topbar {
  display: none;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 18px;
  position: sticky;
  top: 0;
  z-index: 260;
  background: rgba(6, 10, 19, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.mobile-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-hi);
  font-size: 17px;
  font-weight: 800;
  white-space: nowrap;
}

.mobile-logo svg {
  width: 30px;
  height: 30px;
  padding: 6px;
  border-radius: 10px;
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
}

.menu-toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 36px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-sm);
  color: var(--text-hi);
  font-size: 13px;
  background: rgba(255, 255, 255, 0.06);
}

.menu-toggle svg {
  width: 17px;
  height: 17px;
}

.main-wrap {
  flex: 1;
  min-width: 0;
  margin-left: 260px;
  display: flex;
  flex-direction: column;
}

.article-main {
  flex: 1;
  position: relative;
  isolation: isolate;
  padding-top: 70px;
}

.article-main::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(6, 10, 19, 0.88) 0%, rgba(6, 10, 19, 0.78) 40%, rgba(6, 10, 19, 0.95) 80%, var(--bg-deep) 100%),
    url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  pointer-events: none;
}

.article-masthead {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 28px 30px;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  font-size: 13px;
  color: var(--text-muted);
}

.breadcrumb-nav a {
  color: var(--text-body);
  transition: color .2s ease;
}

.breadcrumb-nav a:hover {
  color: var(--cyan);
}

.breadcrumb-divider {
  color: var(--text-weak);
  opacity: .6;
}

.breadcrumb-current {
  color: var(--text-weak);
  max-width: 340px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.heading-wrap {
  margin-top: 24px;
}

.category-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(132, 94, 255, 0.16);
  border: 1px solid rgba(132, 94, 255, 0.3);
  color: #d5c9ff;
  font-size: 13px;
  font-weight: 500;
}

.article-page-title {
  margin-top: 17px;
  font-size: clamp(29px, 5vw, 47px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.8px;
  color: var(--text-hi);
  word-break: break-word;
  max-width: 780px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px 18px;
  margin-top: 19px;
  color: var(--text-muted);
  font-size: 14px;
}

.meta-step {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--text-muted);
}

.meta-step svg {
  width: 16px;
  height: 16px;
  opacity: .75;
}

.meta-step.is-category {
  display: inline-flex;
  padding: 5px 13px;
  border-radius: var(--radius-pill);
  background: rgba(22, 123, 255, 0.14);
  border: 1px solid rgba(22, 123, 255, 0.25);
  color: #a9d0ff;
}

.article-wrap {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 28px 18px;
}

.article-panel {
  width: 100%;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid var(--border-glass);
  border-radius: 22px;
  padding: 40px clamp(20px, 5vw, 54px);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(8px);
}

.rich-content {
  color: var(--text-body);
  font-size: 16px;
  line-height: 2;
  max-width: 780px;
  margin: 0 auto;
  word-break: break-word;
}

.rich-content > * + * {
  margin-top: 1.2em;
}

.rich-content p {
  font-size: 16px;
}

.rich-content a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(0, 209, 255, 0.35);
  transition: color .2s ease, border-color .2s ease;
}

.rich-content a:hover {
  color: #fff;
  border-color: #fff;
}

.rich-content h2 {
  font-size: 24px;
  line-height: 1.45;
  margin-top: 2.2em;
  margin-bottom: .6em;
  color: var(--text-hi);
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.rich-content h3 {
  font-size: 20px;
  line-height: 1.5;
  margin-top: 1.8em;
  margin-bottom: .5em;
  color: var(--text-hi);
}

.rich-content h4 {
  font-size: 17px;
  margin-top: 1.4em;
  color: var(--text-hi);
}

.rich-content ul,
.rich-content ol {
  padding-left: 24px;
  margin: 1em 0;
}

.rich-content ul {
  list-style: disc;
}

.rich-content ol {
  list-style: decimal;
}

.rich-content li {
  margin-bottom: 0.45em;
}

.rich-content img {
  width: auto;
  max-width: 100%;
  border-radius: var(--radius);
  margin: 1.2em auto;
}

.rich-content blockquote {
  margin: 1.5em 0;
  padding: 15px 20px;
  border-left: 3px solid var(--cyan);
  background: rgba(0, 209, 255, 0.09);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-body);
  font-style: normal;
}

.rich-content blockquote p:last-child {
  margin-bottom: 0;
}

.rich-content code {
  background: rgba(255, 255, 255, 0.1);
  color: #a7d9ff;
  padding: 2px 7px;
  border-radius: 6px;
  font-size: 0.9em;
}

.rich-content pre {
  background: #0b1426;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 18px 20px;
  overflow-x: auto;
}

.rich-content pre code {
  background: transparent;
  padding: 0;
  color: #c6e3ff;
}

.rich-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.rich-content table th,
.rich-content table td {
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 10px 12px;
  text-align: left;
  line-height: 1.7;
}

.rich-content table th {
  background: rgba(255, 255, 255, 0.07);
  color: var(--text-hi);
  font-weight: 600;
}

.rich-content hr {
  height: 1px;
  margin: 2em 0;
  background: rgba(255, 255, 255, 0.12);
  border: none;
}

article-not-found {
  text-align: center;
}

.not-found {
  text-align: center;
}

.not-found-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(255, 107, 129, 0.4);
  background: rgba(255, 107, 129, 0.1);
  color: var(--danger);
}

.not-found h1 {
  font-size: 30px;
  color: var(--text-hi);
}

.not-found p {
  margin-top: 14px;
  color: var(--text-muted);
}

.not-found .btn-group {
  margin-top: 25px;
}

.recommend-section {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 58px 28px 0;
}

.recommend-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
}

.recommend-head h2 {
  font-size: 25px;
  color: var(--text-hi);
}

.recommend-head p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 5px;
}

.recommend-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.recommend-card {
  display: flex;
  align-items: center;
  gap: 15px;
  min-height: 118px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
  color: var(--text-body);
}

.recommend-card:hover,
.recommend-card:focus-visible {
  border-color: rgba(155, 210, 255, 0.35);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  outline: none;
}

.recommend-card img {
  flex: none;
  width: 118px;
  height: 86px;
  object-fit: cover;
  border-radius: 12px;
  background: #101c30;
}

.recommend-card:nth-child(3) {
  grid-column: 1 / -1;
}

.rec-card-content {
  min-width: 0;
}

.rec-card-content h3 {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-hi);
  margin-bottom: 5px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.rec-card-content span {
  font-size: 13px;
  color: var(--cyan);
}

.back-cta {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 44px 28px 0;
}

.cta-panel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 26px 30px;
  border-radius: 20px;
  background:
    linear-gradient(135deg, rgba(22, 123, 255, 0.18), rgba(0, 209, 255, 0.1)),
    rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(0, 209, 255, 0.22);
  box-shadow: var(--shadow-card);
}

.cta-panel h2 {
  font-size: 21px;
  color: var(--text-hi);
}

.cta-panel p {
  margin-top: 6px;
  font-size: 14px;
  color: var(--text-muted);
}

.btn-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 13px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 26px;
  border-radius: 12px;
  font-weight: 650;
  font-size: 15px;
  transition: box-shadow .2s ease, filter .2s ease, transform .1s ease, background .2s ease, border-color .2s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 209, 255, 0.4);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  box-shadow: 0 6px 24px rgba(0, 130, 255, 0.35);
}

.btn-primary:hover {
  filter: brightness(1.08);
  box-shadow: 0 8px 30px rgba(0, 130, 255, 0.5);
}

.btn-ghost {
  color: var(--cyan);
  border: 1px solid rgba(0, 209, 255, 0.42);
  background: rgba(0, 209, 255, 0.06);
}

.btn-ghost:hover {
  background: rgba(0, 209, 255, 0.15);
  color: #fff;
}

.site-footer {
  margin-top: 70px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(4, 7, 13, 0.8);
  padding: 54px clamp(22px, 6vw, 110px) 24px;
}

.footer-cols {
  max-width: 1320px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr 1.3fr;
  gap: 32px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-hi);
  line-height: 1.4;
}

.footer-cols p {
  margin-top: 11px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.9;
}

.footer-title {
  font-size: 15px;
  letter-spacing: .4px;
  color: var(--text-hi);
  margin-bottom: 14px;
}

.footer-links,
.safe-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li + li {
  margin-top: 9px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color .2s ease;
}

.footer-links a:hover {
  color: var(--cyan);
}

.safe-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 8px;
}

.safe-list svg {
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  color: var(--success);
}

.footer-bottom {
  max-width: 1320px;
  margin: 42px auto 0;
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  color: var(--text-weak);
  font-size: 13px;
}

.footer-bottom a {
  color: var(--text-muted);
}

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

@media (min-width: 1200px) {
  .article-panel {
    padding-left: 56px;
    padding-right: 56px;
  }
}

@media (max-width: 1199.98px) {
  .side-navbar {
    width: 220px;
  }
  .main-wrap {
    margin-left: 220px;
  }
  .side-brand {
    padding-left: 16px;
    padding-right: 16px;
  }
  .brand-title {
    font-size: 16px;
    white-space: normal;
    line-height: 1.35;
  }
  .brand-icon {
    width: 38px;
    height: 38px;
  }
}

@media (max-width: 991.98px) {
  .side-navbar {
    width: 280px;
    transform: translateX(-105%);
    visibility: hidden;
    background: rgba(4, 8, 14, 0.97);
    transition: transform 0.24s ease, visibility 0.24s ease;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.4);
  }
  body.menu-open .side-navbar {
    transform: translateX(0);
    visibility: visible;
  }
  .main-wrap {
    margin-left: 0;
  }
  .mobile-topbar {
    display: flex;
  }
  .menu-close-btn {
    display: flex;
  }
  .menu-close-btn svg {
    width: 20px;
    height: 20px;
  }
  .side-navbar .side-close-position {
    position: absolute;
    top: 16px;
    right: 14px;
  }
  .side-close-btn {
    position: absolute;
    top: 16px;
    right: 14px;
    z-index: 5;
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    color: var(--text-hi);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }
  .side-close-btn:hover {
    background: rgba(255, 255, 255, 0.14);
  }
  .article-main {
    padding-top: 34px;
  }
}

@media (max-width: 767.98px) {
  .article-masthead,
  .article-wrap,
  .recommend-section,
  .back-cta {
    padding-left: 20px;
    padding-right: 20px;
  }
  .article-panel {
    padding: 28px 20px;
  }
  .article-meta {
    gap: 8px 14px;
  }
  .recommend-grid {
    grid-template-columns: 1fr;
  }
  .recommend-card:nth-child(3) {
    grid-column: auto;
  }
  .recommend-card {
    width: 100%;
  }
  .cta-panel {
    padding: 24px;
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-cols {
    grid-template-columns: 1fr 1fr;
    gap: 28px 22px;
  }
}

@media (max-width: 520px) {
  .article-page-title {
    font-size: 26px;
  }
  .breadcrumb-nav {
    font-size: 12px;
  }
  .breadcrumb-current {
    max-width: 150px;
  }
  .article-panel {
    padding: 24px 16px;
  }
  .rich-content {
    font-size: 15px;
    line-height: 1.9;
  }
  .rich-content h2 {
    font-size: 21px;
  }
  .rich-content h3 {
    font-size: 18px;
  }
  .recommend-section {
    padding-top: 42px;
  }
  .recommend-card img {
    width: 100px;
    height: 82px;
  }
  .rec-card-content h3 {
    font-size: 14px;
  }
  .cta-panel h2 {
    font-size: 19px;
  }
  .btn {
    width: 100%;
  }
  .btn-group {
    width: 100%;
  }
  .mobile-logo {
    font-size: 15px;
  }
  .menu-toggle span {
    display: none;
  }
  .menu-toggle {
    width: 40px;
    padding: 0;
    justify-content: center;
  }
  .footer-cols {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    font-size: 12px;
  }
}

/* roulang page: category2 */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  --bg: #060a13;
  --bg-side: #070d18;
  --bg-panel: #0b1120;
  --card: rgba(255, 255, 255, 0.055);
  --card-2: rgba(255, 255, 255, 0.08);
  --border: rgba(155, 195, 255, 0.14);
  --border-bright: rgba(155, 210, 255, 0.35);
  --line: rgba(155, 195, 255, 0.1);
  --text: #e8f0fe;
  --muted: #9fb0cc;
  --dim: #8ea0bd;
  --primary: #167bff;
  --cyan: #00d1ff;
  --violet: #845eff;
  --amber: #ffc36b;
  --green: #43e7b8;
  --red: #ff6b81;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.22);
  --shadow-hover: 0 12px 30px rgba(0, 80, 255, 0.18);
  --sidebar-width: 260px;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 80% 10%, rgba(22, 123, 255, 0.1), transparent 30%),
    radial-gradient(circle at 20% 80%, rgba(132, 94, 255, 0.07), transparent 28%),
    linear-gradient(rgba(155, 195, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(155, 195, 255, 0.04) 1px, transparent 1px);
  background-size: auto, auto, 48px 48px, 48px 48px;
  background-attachment: fixed;
  color: var(--text);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  display: block;
  max-width: 100%;
}
button,
input,
summary {
  font: inherit;
  border: 0;
  background: none;
  color: inherit;
}
ul,
ol {
  list-style: none;
}
.layout-shell {
  min-height: 100vh;
}
.content-main {
  margin-left: var(--sidebar-width);
  width: calc(100% - var(--sidebar-width));
  min-height: 100vh;
  position: relative;
}

/* ============= 左侧导航 ============= */
.site-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-width);
  z-index: 80;
  display: flex;
  flex-direction: column;
  background: rgba(7, 13, 24, 0.96);
  border-right: 1px solid var(--line);
  overflow-y: auto;
}
.sidebar-brand-area {
  padding: 30px 18px 22px;
  border-bottom: 1px solid var(--line);
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-logo-mark {
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  box-shadow: 0 8px 24px rgba(22, 123, 255, 0.35);
}
.brand-logo-text {
  display: block;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: #fff;
}
.brand-logo-desc {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  font-weight: 400;
  color: var(--dim);
}
.side-nav {
  padding: 24px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.side-nav .nav-link {
  display: flex;
  align-items: center;
  gap: 13px;
  width: 100%;
  height: 48px;
  padding: 0 14px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-weight: 600;
  color: var(--muted);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.side-nav .nav-link svg {
  width: 19px;
  height: 19px;
  flex: none;
  opacity: 0.9;
}
.side-nav .nav-link:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(155, 195, 255, 0.08);
  color: var(--text);
}
.side-nav .nav-link.active {
  background: linear-gradient(90deg, rgba(22, 123, 255, 0.2), rgba(0, 209, 255, 0.04));
  border-color: rgba(155, 195, 255, 0.2);
  color: #fff;
  box-shadow: inset 3px 0 0 0 var(--cyan);
}
.side-nav .nav-link:focus-visible,
.mobile-drawer .nav-link:focus-visible {
  outline: 3px solid rgba(0, 209, 255, 0.5);
  outline-offset: 2px;
}
.sidebar-foot {
  margin-top: auto;
  padding: 20px 22px 24px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--dim);
}
.sidebar-foot strong {
  display: block;
  color: var(--muted);
  font-weight: 600;
}

/* ============= 移动导航 ============= */
.mobile-topbar {
  display: none;
  width: 100%;
  height: 64px;
  padding: 0 18px;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(7, 13, 24, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #fff;
  font-weight: 800;
  font-size: 16px;
}
.topbar-brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff;
  font-weight: 800;
  font-size: 18px;
}
.menu-toggle {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(155, 195, 255, 0.3);
}
.menu-toggle:focus-visible {
  outline: 3px solid rgba(0, 209, 255, 0.5);
  outline-offset: 2px;
}
.menu-toggle svg {
  width: 22px;
  height: 22px;
}
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.56);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 120;
}
.drawer-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}
.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: min(320px, 86vw);
  background: var(--bg-side);
  border-right: 1px solid var(--line);
  padding: 22px 14px;
  z-index: 130;
  transform: translateX(-110%);
  transition: transform 0.28s ease;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.mobile-drawer.open {
  transform: translateX(0);
}
.drawer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px 22px;
  border-bottom: 1px solid var(--line);
  font-weight: 800;
  color: #fff;
}
.drawer-brand span {
  font-size: 17px;
}
.drawer-brand i {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  display: grid;
  place-items: center;
  font-style: normal;
  font-weight: 800;
}
.mobile-drawer .nav-list {
  padding: 20px 0;
}
.mobile-drawer .nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 12px;
  height: 48px;
  border-radius: 12px;
  color: var(--muted);
  font-weight: 600;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}
.mobile-drawer .nav-link svg {
  width: 20px;
  height: 20px;
}
.mobile-drawer .nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}
.mobile-drawer .nav-link.active {
  background: linear-gradient(90deg, rgba(22, 123, 255, 0.22), rgba(0, 209, 255, 0.05));
  color: #fff;
  border-color: var(--border);
}
.drawer-safe {
  margin-top: auto;
  font-size: 12px;
  color: var(--dim);
  padding: 14px 8px;
  border-top: 1px solid var(--line);
  line-height: 1.7;
}

/* ============= 通用排版 ============= */
.page-container {
  width: min(1200px, calc(100% - 64px));
  margin: 0 auto;
  position: relative;
}
.page-section {
  padding: 92px 0;
}
.page-section + .page-section {
  border-top: 1px solid rgba(155, 195, 255, 0.08);
}
.page-section.no-rule {
  border-top: 0;
}
.section-head {
  max-width: 800px;
  margin-bottom: 42px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(22, 123, 255, 0.08);
  color: #bfe1ff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.section-h2 {
  margin: 16px 0 12px;
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
}
.section-sub {
  font-size: 16px;
  line-height: 1.9;
  color: var(--muted);
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #9edbff;
  font-weight: 650;
  border-bottom: 1px solid rgba(0, 209, 255, 0.3);
  padding-bottom: 1px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.text-link:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}
.page-rule {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(155, 195, 255, 0.2), transparent);
}

/* ============= 页面 Hero ============= */
.brand-hero {
  position: relative;
  padding: 48px 0 76px;
  overflow: hidden;
}
.hero-art {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.4;
}
.hero-art::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(6, 10, 19, 0.72) 0%, rgba(6, 10, 19, 0.88) 50%, rgba(6, 10, 19, 0.94) 100%);
}
.hero-inner {
  z-index: 2;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--dim);
}
.breadcrumb a {
  color: var(--muted);
  transition: color 0.2s ease;
}
.breadcrumb a:hover {
  color: #fff;
}
.breadcrumb-sep {
  color: rgba(155, 195, 255, 0.35);
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 999px;
  background: rgba(0, 209, 255, 0.1);
  border: 1px solid rgba(0, 209, 255, 0.35);
  color: #bfefff;
  font-size: 14px;
  font-weight: 600;
}
.hero-eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px rgba(67, 231, 184, 0.9);
}
.page-h1 {
  max-width: 820px;
  margin: 20px 0 18px;
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
}
.hero-lead {
  max-width: 780px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--muted);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}
.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 24px;
  margin-top: 40px;
}
.hero-facts li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
  font-size: 14px;
  backdrop-filter: blur(6px);
}
.hero-facts strong {
  color: #fff;
  font-size: 18px;
  font-weight: 800;
}

/* ============= 按钮 ============= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 50px;
  padding: 0 30px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all 0.22s ease;
}
.btn:active {
  transform: scale(0.98);
}
.btn:focus-visible {
  outline: 3px solid rgba(0, 209, 255, 0.55);
  outline-offset: 3px;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  box-shadow: 0 6px 24px rgba(0, 130, 255, 0.4);
}
.btn-primary:hover {
  filter: brightness(1.12);
  box-shadow: 0 10px 32px rgba(0, 150, 255, 0.5);
}
.btn-ghost {
  color: #d5f1ff;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(0, 209, 255, 0.45);
}
.btn-ghost:hover {
  background: rgba(0, 209, 255, 0.12);
  border-color: rgba(0, 209, 255, 0.75);
}
.btn-soft {
  color: #d5dff5;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(155, 195, 255, 0.2);
}
.btn-soft:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* ============= 分类营销卡片区 ============= */
.activity-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.activity-card {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 20px 24px;
  align-items: start;
  padding: 26px 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
}
.activity-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.activity-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(132, 94, 255, 0.16);
  border: 1px solid rgba(132, 94, 255, 0.24);
  color: #c5b5ff;
  font-weight: 800;
  font-size: 22px;
}
.activity-card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-bottom: 6px;
}
.activity-card-header h3 {
  font-size: 21px;
  font-weight: 700;
}
.activity-modal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.activity-card p {
  max-width: 780px;
  margin-top: 4px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}
.activity-foot {
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

/* ============= 标签 ============= */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(155, 195, 255, 0.18);
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.badge-cyan {
  color: #aeeaff;
  background: rgba(0, 209, 255, 0.1);
  border-color: rgba(0, 209, 255, 0.3);
}
.badge-amber {
  color: #ffe2b8;
  background: rgba(255, 195, 107, 0.1);
  border-color: rgba(255, 195, 107, 0.3);
}
.badge-violet {
  color: #d2c6ff;
  background: rgba(132, 94, 255, 0.14);
  border-color: rgba(132, 94, 255, 0.32);
}
.badge-green {
  color: #c3ffef;
  background: rgba(67, 231, 184, 0.1);
  border-color: rgba(67, 231, 184, 0.3);
}

/* ============= 图文分栏 ============= */
.split-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.split-content h2 {
  margin: 14px 0 12px;
}
.split-content p {
  margin-bottom: 16px;
  color: var(--muted);
}
.split-media {
  position: relative;
}
.split-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.split-media-tag {
  position: absolute;
  left: 18px;
  bottom: 18px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(6, 10, 19, 0.78);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}

/* ============= 提醒/信息块 ============= */
.safety-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.safety-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.safety-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-1px);
}
.safety-icon {
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: rgba(22, 123, 255, 0.16);
  border: 1px solid rgba(22, 123, 255, 0.3);
  color: #9ed4ff;
}
.safety-icon svg {
  width: 20px;
  height: 20px;
}
.safety-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}
.safety-card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ============= FAQ ============= */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.faq-item:hover {
  border-color: rgba(155, 210, 255, 0.3);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  transition: color 0.2s ease;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary:hover {
  color: #cfeaff;
}
.faq-icon {
  width: 28px;
  height: 28px;
  flex: none;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  color: #fff;
  transition: transform 0.2s ease, background 0.2s ease;
}
.faq-icon svg {
  width: 16px;
  height: 16px;
}
.faq-item[open] .faq-icon {
  background: rgba(0, 209, 255, 0.2);
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 24px 24px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

/* ============= CTA ============= */
.cta-panel {
  position: relative;
  border-radius: 28px;
  padding: 52px 52px;
  background: linear-gradient(135deg, rgba(22, 123, 255, 0.24), rgba(0, 209, 255, 0.08)), rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(155, 195, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.cta-panel::before {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  right: -60px;
  top: -80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(22, 123, 255, 0.28), transparent 70%);
  pointer-events: none;
}
.cta-side {
  position: relative;
  z-index: 2;
}
.cta-side h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 8px;
}
.cta-side p {
  color: var(--muted);
  max-width: 620px;
}
.cta-actions {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  flex: none;
}

/* ============= 页脚 ============= */
.site-footer {
  margin-top: 0;
  background: rgba(7, 13, 24, 0.96);
  border-top: 1px solid var(--line);
  padding: 60px 0 24px;
}
.footer-cols {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
  gap: 42px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 48px);
}
.footer-brand-name {
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.footer-cols p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted);
}
.footer-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}
.footer-links li + li {
  margin-top: 8px;
}
.footer-links a {
  display: inline-block;
  font-size: 14px;
  color: var(--muted);
  transition: color 0.2s ease, transform 0.2s ease;
}
.footer-links a:hover {
  color: #fff;
  transform: translateX(2px);
}
.safe-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 10px;
}
.safe-list svg {
  width: 15px;
  height: 15px;
  flex: none;
  margin-top: 4px;
  color: var(--green);
}
.footer-bottom {
  max-width: 1200px;
  margin: 44px auto 0;
  padding: 20px clamp(16px, 4vw, 48px) 0;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--dim);
}
.footer-bottom a {
  color: var(--muted);
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.footer-bottom a:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

/* ============= 桌面/平板收窄 ============= */
@media (max-width: 1199.98px) {
  :root {
    --sidebar-width: 220px;
  }
  .brand-logo-text {
    font-size: 16px;
  }
  .brand-logo-mark {
    width: 38px;
    height: 38px;
    font-size: 20px;
  }
  .cta-panel {
    padding: 42px 36px;
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ============= 移动端 991 ============= */
@media (max-width: 991.98px) {
  .site-sidebar {
    display: none;
  }
  .content-main {
    margin-left: 0;
    width: 100%;
  }
  .mobile-topbar {
    display: flex;
  }
  .page-section {
    padding: 64px 0;
  }
  .page-container {
    width: min(100% - 32px, 720px);
  }
  .split-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .split-media {
    order: -1;
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .footer-cols {
    grid-template-columns: 1fr 1fr;
    gap: 32px 24px;
  }
  .hero-facts {
    align-items: stretch;
  }
  .brand-hero {
    padding: 34px 0 56px;
  }
}

/* ============= 小屏 ============= */
@media (max-width: 575.98px) {
  .page-container {
    width: min(100% - 24px, 520px);
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .btn {
    width: 100%;
    padding: 0 20px;
  }
  .safety-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .activity-card {
    grid-template-columns: 1fr;
    padding: 22px;
  }
  .activity-icon {
    width: 48px;
    height: 48px;
    font-size: 19px;
  }
  .activity-foot {
    grid-column: 1;
  }
  .cta-panel {
    border-radius: 20px;
    padding: 34px 24px;
  }
  .cta-actions {
    width: 100%;
    flex-direction: column;
  }
  .footer-cols {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
  .page-h1 {
    font-size: 34px;
  }
  .brand-hero {
    padding: 24px 0 48px;
  }
}